CONCEPTUAL OUTLINES Chapter Twelve THE ADVENT OF NETWAR

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Chapter 12-已整理

Chapter 12-已整理

Chapter 12 Digestion and Indigestion12.1 What the Digestive System DoesIn this chapter we shall study the mechanism by which the food that we eat manages to reach the cells of every part of the body. This process is not so simple as it might seem. A solitary cell would be baffled if a fragment of food, in the state that is familiar to us, appeared across the lake of tissue fluid and sought admission. Food must be converted to a state in which it is capable of being taken into the cells by way of the blood plasma. This conversion process is known as digestion. Once the food is digested, however, it must be transferred to the blood stream; and the process by which this transfer occurs is called absorption. Digestion and absorption are the two chief functions of the digestive system (See Fig. 12. 1).For purposes of study, the digestive system may be divided into two groups of organs:1. The alimentary canal is a continuous passageway beginning at the mouth, where food istaken in and terminating at the anus, where the solid waste products of digestion are expelled from the body.2. The accessory organs, while vitally necessary for the digestive process, do not happen tobe part of the alimentary canal.Fig. 12.1 The Digestive System12. 2 The Alimentary CanalThe alimentary canal is a muscular digestive tube extending through the body. It iscomposed of several parts: the mouth, the pharynx, the esophagus, the stomach, the small intestine and the large intestine, all of which will be defined and described as we encounter them. In this chapter there will be a separate section devoted to the accessory organs, although we shall be familiar with at least the main functions of all of them by the time we have finished our survey of the alimentary canal.The word “aliment” comes from a Latin word which means “food” or “nutrients”. Those foods which undergo changes and are absorbed into the blood leave the tube from the region of the small intestine. Indigestible substances such as coins, safety pins,and the cellulose in food pass the whole distance through the alimentary canal and are expelled from the body.1.The Mouth, or Oral CavityThe mouth is also called the oral cavity. A digestible lump of sugar as well as an indigestible coin would begin the tour of the alimentary canal in this cavern. The oral cavity has three purposes:(1) To receive food(2) To prepare food initially for the digestive process(3) To aid in the accomplishment of speechInto this space there projects a muscular organ called the tongue. The tongue is an aid to chewing and swallowing, and in addition is one of the principal organs of speech. (The Latin word “lingua,”meaning “tongue,”gave rise to our word “language.”) The tongue has on its surface a number of special organs called taste buds, by means of which we can differentiate taste sensations (bitter, sweet, sour or salty).Within this cavity are also a number of stone-like structures, the teeth. There are 20 of these stony structures in a child between two and six years of age. The adult with the good fortune to have a complete set would have 32 teeth. The cutting teeth, or incisors, occupy the front part of the buccal cavity, while the larger grinding teeth, called the molars, are in the back portion of the oral cavity.Deciduous, or baby teethThe first eight deciduous teeth to make their appearance through the gums are the incisors. Later the canines (eye- teeth) and molars appear. Usually the 20 baby teeth have all made their appearance by the time the infant has passed his second birthday. During this time the permanent teeth continue development within the jaw bones. The first permanent tooth to make its appearance is the very important six-year molar. This permanent tooth comes in before the baby incisors are lost, and many people do not realize that a key permanent tooth has appeared. Decay and infection of the adjacent deciduous molars may spread to and involve the new permanent molar tooth. Deciduous teeth need proper care in order to help preserve the six-year molars and other permanent teeth.Permanent teethAlthough the buds for the second set of teeth are present at birth, the first permanent tooth does not usually make its appearance in the mouth until the child is about six years old. At that time the first molar, the keystone for the future grinding surfaces, appears in the space now present behind the baby molars. As the child grows, the jawbones grow also; therefore there is space for more teeth than are in the first set. After the first permanent molar has made its appearance, the baby incisors loosen and are replaced by permanent incisors. Then the baby canines are replaced by permanent canines, and finally the baby molars are replaced by the bicuspids (premolars) of the permanent set. Now the larger jawbones are ready for the appearance of the l2-year or second permanent molar teeth. Somewhat later, the third molars, or so-called wisdom teeth, appear. In some cases the jaw is not large enough, or there are other abnormalities, so that these teeth may have to be removed early in life.Diseases of the mouth and the teethInfection of the gum is called gingivitis, while infection of the rest of the mucous 1ining of the mouth is called stomatitis. Stomatitis has recently become a problem for people who use antibiotic types of lozenges. These medicated wafers may encourage fungous infections of the mouth and the tongue. Vincent’s angina is a kind of gingivitis, causing redness and ulceration of the mucous membrane of the mouth and gums. It is contagious and is caused by a spirochete. Pyorrhea is an inflammation involving the tooth socket or alveolus. It is accompanied by discharge of pus, so the name is really pyorrhea alveolaris. “Pyo”means “pus,”“rrhea”means “flow”or “discharge,” while “alveolaris'” refers to a hollow or socket.Tooth decay or dental caries which means “rottenness,”has a number of causes. For Americans, it is a particularly expensive disease. Primitive peoples and others who do not indulge in the elegant foods so characteristic of the American diet have much less tooth decay. In addition to diet, such factors as heredity, mechanical prob1ems and endocrine disorders are believed to play a part. Since a baby’s teeth begin development before birth, the diet of the mother during pregnancy also is most important in forestalling tooth decay.The salivary glandsAnother contribution to the digestive mechanism furnished by the oral cavity is the production of saliva. The purpose of saliva is to dissolve the food and to facilitate the processes of chewing (mastication) and swallowing (deglutition). Saliva also coats the food with mucus, allowing it to “go down” more easily. The chemical function of saliva will be discussed later in this chapter.Saliva is manufactured by three pairs of glands, the first of the accessory organs:(1) The parotid glands, the largest of the group(2) The submandibular or submaxillary, glands, located near the body of the lower jaw(3) The sublingual glands, under the tongueThe parotid salivary glands, located near the ear, are infected in the contagious disease commonly called mumps. The infecting agent is a virus. The patient should remain quiet in the hope of preventing the spread of the infection to the sex glands, the pancreas and the other salivary glands. As is true of many contagious diseases, mumps is now preventable by the use of a vaccine.2.The Walls of the Alimentary CanalBeyond the oral cavity, the walls of the parts of the alimentary canal from the swallowing tubes to the anus are all of a more or less uniform design. First of all, the canal is lined with mucous membrane. Beneath the mucosa is a layer of “packin g” tissue (connective): containing blood vessels and nerves. Next come layers of involuntary muscle tissue with a most interesting function. When food reaches the swallowing tubes, this muscle tissue is stimulated to produce a rhythmic wavelike motion known as peristalsis, as a result of which the food is transported the entire length of the alimentary canal and mixed with digestive juices en route.The final layer of the alimentary canal is of fibrous connective tissue --- except for those parts that extend into the abdominal cavity, which have an additional layer called peritoneum --and will be discussed later in this chapter.3.The Swallowing Tubes and Their AccessoriesThe pharynx is often referred to as the throat. The digestible food and the indigestible coin are both pushed by the tongue into the pharynx. The tongue and the walls of the pharynx are made of voluntary muscle with a lining of mucosa. The tonsils may be seen at either side of the pharynx. The soft palate forms the back of the roof of the oral cavity. From it hangs a soft, fleshy, V-shaped mass called the uvula. This muscular tissue guards the opening from the nasal cavity and the upper pharynx, preventing foods and liquids from entering the nasal cavities. During the process of swallowing, the muscles of the pharynx contract and so constrict the space. At this time the openings into the air spaces both above and below the mouth are closed off by the soft palate above and by the epiglottis shaped like a small lid below.The esophagus, or gullet, receives the contents of the contracting pharynx and forces them on by peristalsis. The esophagus, about 22.5 centimeters long, extends through the neck and the chest (thorax). Finally the esophagus reaches the abdominal cavity after extending through the diaphragm. There it empties into a saclike structure called the stomach.4.The StomachThe stomach is actually an enlarged (dilated) section of the alimentary tube. It is shaped somewhat like a gourd, and both ends of it are guarded by valves which normally permit thepassage of substances in only one direction. The first of these is the cardiac valve, located between the esophagus and the stomach. We frequently are aware of the existence of this valve; sometimes it does not relax as it should, and then there is a feeling of having a place one can’t swallow past. At the distal or far end of the stomach, connecting it with the small intestine is the other valve called the pyloric sphincter. This valve is especially important in that it determines the length of time in which the food remains in the stomach (Fig. 12. 2).The stomach, so often abused and misunderstood, is a combination storage pouch and churn. If the stomach is empty, there will be many folds in the lining. These folds are called rugae, and they disappear as the stomach fills. When the stomach is filled, the pyloric sphincter closes and retains the contents until the food has been mixed with certain digestive juices collectively called gastric juice. These juices are secretions given out by tiny glands in the stomach wall. The mixture of gastric juice and food is known as chyme .The gastric juice itself has two main components: hydrochloric acid and enzymes.Fig. 12.2 the stomachStomach acidThe hydrochloric acid in the stomach juice has three important functions:(1) It softens the connective tissues in meat.(2) It kills bacteria and thus destroys many potential disease-producing agents.(3) It activates at least one of the stomach enzymes, which are chemicals that convert foodinto soluble and absorbable substances.An abnormally low production of stomach acid may cause digestive disturbances which are greatly aggravated by taking soda or other alkaline substances contained in many patent medicines purporting to relieve indigestion. Such substances neutralize the valuable normal functions of the stomach acid and in many cases grave harm is done by such self-medication. Occasionally, hydrochloric acid is produced in excess, but this condition is rather uncommon and can be diagnosed easily by an analysis of the stomach contents. What the layman thinks is excess acidity (hyperacidity) may really be underacidity (hypoacidity) and may indicate serious disease, possibly even cancer.Heartburn, vomiting and related disordersA burning sensation in the region of the esophagus and stomach is popularly known as heartburn. It may be caused by the sudden intake of a large amount of fluid with excessive stretching of the lower part of the esophagus. It is also a common complaint in stomach irritation due to excessive food in-take or food poisoning. It is not due to over-acidity of the stomach contents, since it is often found in cases of abnormally low acidity. Nausea is a feeling of illness that may follow distention or irritation of the lower esophagus or of the stomach as the result of various nervous and mechanical factors. It may be a symptom of interference with the normal forward peristaltic motion of the stomach and intestine and thus may be followed by vomiting. V omiting refers to the expulsion of stomach (and sometimes bowel) contents through the mouth by reverse peristalsis. The contraction of the abdominal wall muscles forcibly empties the stomach. V omiting is frequently caused by overeating, by irritants that may be found in food or drink and by a variety of generalized diseases.Flatus usually refers to excessive amounts of air in the stomach or intestine. The resulting condition is referred to as flatulence. In some cases it may be necessary to insert tubes into the stomach or rectum to aid the patient in expelling flatus.Stomach cancerAbout a fourth of all cancers involve the stomach, and to this type of cancer males are somewhat more susceptible than females. The growth nearly always develops from the epithelial or mucosal lining of the stomach and is often of the type called adenocarcinoma. Sometimes the victim has suffered from long-standing indigestion but has failed to consult a physician until the growth has spread to other organs such as the liver, in which there may be secondary (metastatic) growths by the dozen. Persistent indigestion is one of the important warning signs of cancer of the stomach.Peptic ulcerAn ulcer is defined as an area of the skin or mucous membrane in which the tissues are gradually disintegrating and the substance is being lost. A peptic ulcer is found on the mucous membrane of the esophagus, the stomach or the duodenum, the first or proximal part of the small intestine. It may be the result of the acid action of the gastric juice. Peptic ulcers are found most frequently in people between the ages of 30 and 45. The intestinal type of ulcer is much more common in males. Emphasis is now being placed on mental and emotional factors as a contributing cause of ulcers. The person suffering from peptic ulcer needs the best medical and nursing care, and most certainly should not depend on patent medicines.More about the pyloric valveThe pyloric valve (or sphincter) is a ring-like muscle surrounding the end of the stomach. Normally the stomach contents escape through this valve in about two to six hours. This action may be delayed by a spasm of the muscle (pylorospasm), or an actual constriction of the opening may be present. Some infants, most often males, are born with an abnormally small opening. This condition is called pyloric stenosis and usually surgery is required to prevent starvation of the infant. The exit valve from the stomach opens into the small intestine.5. The Small IntestineThe small intestine is by far the longest part of the alimentary canal. More appropriately, it might be called the long intestine, because it is about four or five times as long as the large intestine. However, it is known as the small intestine because of its smaller diameter. The small intestine is about 6 meter long as compared with 1.2 to 1.5 meter for the large intestine. In addition, the mucosa which lines the small intestine is greatly increased in area by tiny fingerlike projections called villi (see Fig. 12. 3). The first 25 to 27 cm of the small intestine is called the duodenum. In the duodenum is an opening into which lead two conduits, or ducts, carrying digestive juices from two accessory organs of digestion. One of these juices is pancreatic juice, which arrives via the pancreatic duct from the pancreas. The other juice is bile, carried by the common bile duct from the liver. (Bile is not primarily a digestive juice in that it contains no enzymes, but it is important in the digestion of fats). The small intestine secretes its own intestinal juice. Thus, as the food and the chyme pass into the duodenum, they are deluged by a cloudburst of digestive juices.Beyond the duodenum there are two more divisions of the small intestine: the jejunum, which forms the next two fifths; and finally the ileum, constituting the remainder. The ileum joins the large intestine through another muscular valve called the ileocecal sphincter.The food in the stomach is partially digested by the gastric juices, but the small intestine is the organ in which the greater part of the digestive process takes place, and where absorptionoccurs.Fig. 12.3 Structure of a villusAbsorption in the small intestineBefore the process of digestion is discussed in any detail, let us assume for the moment that the food in the small intestine has already been digested --that is, reduced by the concerted action of the digestive juices to the state in which it is ready to go to the blood stream and ultimately to the body cells. The means by which the digested food reaches the blood stream is known as absorption.The small intestine is the chief organ of absorption, this process taking place through the mucosa by means of the countless minute projections of it known as villi. The villi are so small and so numerous that they give a velvety appearance to the lining of the small intestine. Each villus is of epithelium under 1aid with connective tissue. Within each is a system of miniature arteries and veins bridged with capillaries. All the basic food materials, including water and salts, but with the exception of some fats, are absorbed into the blood stream through the capillary walls in the villi. From here they pass by way of the portal system to the liver, to be stored or released and used as needed:Fats have an alternate method of reaching the blood stream. As noted, some fat is absorbed via the blood capillaries of the villi. However, some fats also are absorbed by way of the lymphatic capillaries of the villi, which are called lacteals. According to some authorities, about 40 percent of fat is absorbed via the lacteals. The word “lacteal”means “like milk,”an apt description of the appearance of the mixture of lymph and fat globules that is drained from the small intestine after a quantity of fat has been digested. This mixture of fat and lymph, called chyle, collects in the cisterna chyli and eventually reaches the blood stream.The process of digestionThe blood plasma contains the water, the food substances and the mineral salts which together are necessary for the life and growth of the cells. We now know the means by which these materials reach the blood plasma in the first place; it yet remains for us to find out how these simple chemical substances are derived from the complex foods that we eat. This conversion process is known as digestion.Let us review once more these basic materials which the cells need, and which are found in foods:(1) Carbohydrates, which include starches and sugars, and contain the elements carbon,hydrogen and oxygen.(2) Fats, which are more concentrated in fuel value than carbohydrate, and may in somecases, carry important vitamins.(3) Proteins, which form the stuff of which, besides water, protoplasm is made.(4) Mineral salts, which include a large variety of somewhat simpler compounds than thosementioned above. Salts maintain the proper conditions for osmosis in the cells, form a part of the body structure (as in bone) and play an important part in such life processes as muscle contraction and nerve responses.(5) Vitamins, which among other things help to regulate cell metabolism. They are foodsubstances which are essential for good health.(6) Water, which constitutes about 66 percent of man’s entire body composition. Eightypercent or more of many fruits and vegetables, and from 50 percent to 75 percent of meats and fish is water.The digestive juices, by their chemical action, extract these various materials so that they can be absorbed. Most of the digestive juices contain the chemicals known as enzymes, and it is the enzymes that actually do the work of breaking down foods chemically. It should be pointed out that although the enzymes cause the chemical reaction to take place, they themselves do not enter into the reaction. For example, an enzyme may cause the basic protein to separate itself from the rest of the food, but the enzyme itself does not become a part of the protein. There are several different enzymes, and each acts on a specific food compound and no other. For example, some enzymes act only on fats; others act only on starches, and so forth. But let us see for ourselves what happens to a mass of food from the time it is taken into the mouth to the moment that it is ready to be absorbed.The food is now being chewed; and saliva, the first of the digestive juices is acting on it, softening it so that it can be swallowed easily. Saliva contains the enzyme ptyalin, which initiates the process of digestion by changing some of the starches into sugars. Recall at this point that carbohydrates are found in the blood plasma in the form of simple sugar --glucose --and thus we should begin to understand where this blood sugar comes from.When the food reaches the stomach, it is acted upon by the gastric juice, which contains hydrochloric acid and certain enzymes. The most important functions of the gastric juice are those related to the actions of the hydrochloric acid and the liquefying of the food. In addition, there is some action, particularly on proteins, by the enzymes listed below:(1) Pepsin. This begins the breakdown of protein into simpler forms, so that the juices inthe small intestine can work on them more effectively.(2) Rennin. This enzyme is the one that causes the curdling of milk, and is probablysecreted in larger amounts in babies; possibly not at all in adults.(3) Lipase. This enzyme acts on fat but is of very minor importance in the stomach,partly because most of the fat particles found in the stomach are too large.At this point the food is a liquid (chyme) and proceeds to the small intestine for more chemical treatment.Here the chyme is mixed with the greenish-yellow bile from the liver via the gallbladder. The bile does not contain enzymes; its action is purely mechanical. It works on fat, acting as a sort of liquid crowbar that splits the bits of fat into ever smaller particles so that the next digestive juice, the powerful secretion from the pancreas, can, act more efficiently. The pancreatic juice contains a number of enzymes including the following:(1) Lipase. This enzyme was mentioned in connection with the gastric juice where it ispresent in small quantities. Following the physical division of fats into tiny particles by the action of bile, the powerful pancreatic lipase actually does almost all the digesting of fats.In this process fats are usually broken down into two simpler compounds, glycerol and fatty acids, which are more readily absorbable. If pancreatic lipase is absent, fats are expelled with the feces in undigested form.(2) Amylopsin. This changes starch to sugar.(3) Trypsin. This splits proteins into amino acids, which are the form in which proteinsenter the blood stream.The intestinal juice contains a number of enzymes including three that act on the sugars to transform them into the simpler form in which they are absorbed. These are maltase, sucrase and lactase. It must be emphasized that most of the chemical changes in foods occur in the intestinal tract because of the pancreatic juice, which could probably adequately digest all foods even if no other digestive juice were produced. If pancreatic juice is absent, serious digestive disturbances always occur.This, in a nutshell, is the process of digestion. It should be noted that the food materials which the enzymes separate and reduce to absorbable forms are carbohydrates ( i.e. , sugars and starches), fats and proteins. The mineral salts are dissolved in the water, and this solution is absorbed as it is. The vitamins behave a bit differently according to their type. Some are incorporated in fats and are absorbed along with the fats (unless mineral oil is taken; and in that case the fat soluble vitamins may be carried out in the feces). Other vitamins are dissolved inwater and are absorbed in much the same way that mineral salts are. Still other vitamins (such as vitamin K) are produced by the action of bacteria in the colon and are absorbed from the large intestine.6. The Large IntestineOnce the processes of digestion and absorption have taken place, all that remains of the food is of no further use to the body, and so can be expelled. Also, anything else that may be indigestible (such as the coin that was swallowed) will pass out of the body through the large intestine.The materials to be eliminated will continue through the exit or ileocecal valve from the small intestine and enter the small pouch at the beginning (proximal) part of the large intestine. This pouch is called the cecum and is located in the lower right iliac region of the abdomen. To the cecum is attached a small blind tube called the vermiform appendix. “Vermiform” means wormlike. The appendix contains relatively large amounts of lymphoid tissue such as that found in the tonsils; and as is frequent in the case of the tonsils, this tissue may become infected, a condition called appendicitis.No enzymes are secreted by the large intestine. Its walls are lined with mucous membrane and contain layers of involuntary muscle which move the solid waste products, called fecal matter, on toward the rectum. Absorption of water takes place through the walls of the large intestine, though there are no villi. The action of bacteria within the large intestine is a further aid to the absorption of nutrients.The colon and the rectumThe colon, which is the name for the longer part of the large intestine, extends up from the cecum along the right side and then bends to extend across the abdomen to the left side. It then descends on the left side of the abdomen into the pelvis. The lower part of the colon bends in an S shape to form the sigmoid flexure. Hence the names for the four divisions: ascending colon, transverse colon, descending colon and sigmoid colon (see Fig. 12. 1). The sigmoid colon empties into the rectum, which is about 15 to 20 cm long. The rectum serves as a temporary storage area for the indigestibles and unabsorbables. A narrow portion of the distal part of the large intestine is called the anal canal, which leads to the outside through an opening called the anus. The whole journey from mouth to anus usually requires some 36 hours or more.7. Intestinal DisordersGastritis and enteritisIndigestion may be due to a gastritis, which means inflammation of the stomach lining, or to an enteritis, which means intestinal infection. More commonly the stomach and the small intestine are both involved, so that the illness is known as gastroenteritis. The symptoms includenausea, vomiting and diarrhea as well as acute abdominal pain or colic. Gastroenteritis may be caused by a variety of pathogenic organisms including staphylococci, dysentery bacilli, the cholera bacterium and the protozoa of amebic dysentery. Chemical irritants such as alcohol, spray residues on fruits and vegetables and other toxins have been known to cause gastritis and enteritis.Diarrhea and dysenteryDiarrhea means “to flow through,”and is a symptom in which there is an abnormally frequent watery bowel movement. Dysentery means “difficulty in the intestine”, and usually refers to an inflammation of the mucosal lining, although deeper tissues also may be affected. The two main types of dysentery are:(1) Bacillary dysentery, which is caused by rod-shaped bacteria that are transferred tofood and water primarily by human carriers.(2) Amebic dysentery, which is due to an infestation by a one-celled animal calledEntamoeba histolytica.Bacillary dysentery may be prevented by a combination of water chlorination, milk pasteurization and observation of all sanitary measures in the handling of food. Restaurant workers should receive periodic examinations and should observe ordinary precautions such as frequent hand washing, particularly after every trip to the toilet. Amebic dysentery is especially prevalent in areas in which food is grown in fields where human waste is used for fertilizer. When traveling in countries in which this is the custom, one should avoid the use of raw food and unboiled or unsterilized water. The traveler should carry chemical tablets to kill contaminants in water if he is unable to boil it.Diarrhea is a symptom found in many conditions in addition to the dysenteries. Some of these disorders include:(1) Epidemic diarrhea, or diarrhea of the newborn, is somewhat more common in thepremature infant.(2) Bacterial food poisoning, which is usually due to the growth of staphylococci with theformation of poisons, especially in custards and cooked potatoes that are not kept refrigerated.(3) Ptomaine poisoning which is sometimes confused with the bacterial food poisoningcaused by staphylococci but is actually due to putrid meat. It is now rather rare.(4) Deficiency diseases such as pellagra or sprue.(5) Acute emotional disturbance, such as those sometimes experienced by students justbefore and during an important test (so-called State Board diarrhea).(6) Asiatic cholera, typhoid fever, paratyphoid infections, and related diseases.(7) Cancer, in which constipation may alternate with diarrhea.(8) Tuberculosis and other infections of the bowel, including diverticulitis, which is an。

选题背景模板英语作文

选题背景模板英语作文

选题背景模板英语作文英文回答:Research Context。

The research context refers to the existing knowledge, theoretical frameworks, and previous studies that provide the foundation for a new research project. It establishes the problem or gap in the field that the research aims to address.Purpose of the Research。

The purpose of the research articulates the specific objectives of the study, what it intends to achieve, and how it will contribute to the field. It provides a clear rationale for conducting the research.Research Questions。

Research questions are specific, focused inquiries that guide the study. They define the scope and direction of the research and help to operationalize the research purpose.Research Design。

The research design outlines the overall structure and methodology of the study. It describes the data collection methods, the participants or sample, and the analytical techniques used to answer the research questions.Theoretical Framework。

[荐书]Memoir of a Chinese Landlord's Son(《阁楼上下》by曹冠龙)

[荐书]Memoir of a Chinese Landlord's Son(《阁楼上下》by曹冠龙)

The Attic Memoir of a Chinese Landlord's Son
一九九四年,加州大学出版了由他本人主译的英文版 (The Attic), 《纽约时报书评》称其为卡夫卡级别的文学作品。 本书曾获《中国时报》开卷十大好书。 小说的核心是曹家蜗居数十年的阁楼, 以抒情救赎现实的紊乱与艰辛,写身体的禁锢, 娓娓道出一个反常的时代,自有一股动人力量。 我家是一间阁楼,阁楼两面倾斜的屋顶和屋顶下的楼板构成了一个等腰三角形。 由於阁楼的那种紧凑的建筑特点,不宜架床,但那三角形的两个尖角下却是打 地铺的好地盤。两张地铺,一南一北,北头是父亲和两个哥哥睡,南头是母亲、 我,和我的小妹妹。一家六口在远离故土的一个窄小的空间里,悄悄地享受著 天赐的光阴。 这本小说以曹冠龙个人成长过程为基础,叙述一个上海下层家庭如何经历共和 国一次又一次的风暴。以曹家一家人蜗居数十年的阁楼为核心,曹冠龙写局促 阴湿的空间,动辄得咎的身体,毫无私密的起居,几乎可以成为社会主义生活 的隐喻。然而比起外面天翻地覆的变化,这阁楼一角还是曹冠龙称之为「家」 的所在,为他惨淡的青少年岁月留下最後一缕温馨的回忆。
PART 3.0
• 3.0 TWO PIECES OF MEMORIES
Tips for U(Mostly,beginner) TO CHOOSE A BOOK TO READ
TOO MANY OLD FASHION UNINTRESTED
UN-FAMILIAR BACKGROUND
WHAT U READ
WHY I CHOOSE THIS BOOK
Little old fashion
What I knew a lFra bibliotekttle( I want to know,too)

英语长难句

英语长难句

突破雅思阅读长难句100句1.These misconception do not remain isolated but become incorporated into a multifaceted, but organized, conceptual framework, making it and the component ideas, some of which are erroneous, more robust but also accessible to modification.2.The aim of the present study is to start to provide such information, to help teachers design their educational strategies, to build upon correct ideas and to displace misconceptions and to plan programmes in environment studies in their schools.3.These observations are generally consistent with our previous studies of pupils’ view about the use and conservation of rainforests, in which girls were shown to be more sympathetic to animals and expressed views which seem to place an intrinsic value on non-human animal life.4.Perhaps encouragingly, more than half of the pupils (59%)identified that it is human activities which are destroying rainforests, some personalizing the responsibility by the use of terms such as ‘we are’.5. Pupils’responses indicate some misconception in basic scientific knowledge of rainforests’ecosystems such as their ideas about rainforests as habitats for animals, plants and humans and the relationship between climatic change and destruction of rainforests.6.In other words, they gave no indication of an appreciation of either the range of ways in which rainforests are important or the complex social, economics and political factors which drive the activities which are destroying the rainforests.7.One encouragement is that the results of similar studies about other environmental issues suggest that older children seem to acquire the ability to appreciate, value and evaluate conflicting views.8.Baleen species studied at close quarters underwater – specifically a grey whale calf in captivity for a year, and free-ranging right whales and humpback whales studied and filmed off Argentina and Hawaii -- have obviously tracked objects with vision underwater, and they can apparently see moderately well both in water and in air.9.Eye position in freshwater dolphin, which often swim on their side or upside down while feeding, suggest that what vision they have is stereoscopic forward and upward.10. And although preliminary experimental evidence suggests that their in-air vision is poor, the accuracy with which dolphins leap high to take small fish out of a trainer’s hand provides anecdotal to the contrary.11. Some of the more complicated sounds are clearly communicative, although what role they may play in the social life and culture of cetaceans has been more the subject of wild speculationthan of solid science.12.From a number of recent studies, it has become clear that blind people can appreciate the use of outlines and perspectives to describe the arrangement of objects and other surfaces in space.13.To search out these answers, I created raised -- line drawing of five different wheels, depicting spokes with lines that curved, bent, waved, dashed and extended beyond the perimeter of the wheel.14.Most guessed that the curved spokes indicated that the wheel was spinning steadily; the wavy spokes, they thought, suggested the wheel was wobbling; and the bent spokes were taken as sign that the wheel was jerking.15.Subjects assumed that spokes extending beyond the wheel’s perimeter signified that the wheel had its brakes on and that dashed spokes indicated the wheel was spinning quickly.16.Evidently, however the blind not only figured out meaning for each line of motion, but as a group they generally came up with the same meanings at least as frequently as did sighted subjects.17.We gave a list of twenty pairs of words to sighted subjects and asked them to pick from each pair the term that best related to a circle and the term that best related to a square.18.Typically,children do not end up on the streets due to a single cause, but to a combination of factors: a dearth of adequately funded schools, the demand for income at home, family breakdown and violence.19.Children who work on the streets are generally involved in unskilled, labour-intensive tasks which require long hours, such as shinning shoes, carrying goods, guarding or washing cars, and informal trading.20.Many children may choose entrepreneurship because it allows them a degree of independence, is less exploitative than many forms of paid employment, and is flexible enough to allow them to participate in other activities such as education and domestic tasks.21.Participants in this enterprise were supplied with bicycles, which they used to deliver parcels and messages, and which they were required to pay for gradually from their wages.22. However, we believe that credit must be extended in association with other types of support that help participants develop critical life skills as well as productive businesses.23. A violent eruption can blow the top few kilometers off a mountain, scatter fine ash practically all over the globe and hurl rock fragments into the stratosphere to darken the skies a continent away.24.The flow, thought to be in the form of convection currents, is powerful enough to fracture the ‘eggshell’ of the crust into plates, and keep them bumping and grinding against each other, or even overlapping, at the rate of a few centimeters a years.25.Every eruption is different, but put at its simplest, where there are weaknesses, rocks deep in the mantle, heated to 1,350℃, will start to expand and rise.26.The biggest eruptions are deep on the mid-ocean floor, where new lava is forcing the continents apart and widening the Atlantic by perhaps five centimeters a year.27.Look ate maps of volcanoes, earthquakes and island chains like the Philippines and Japan, and you can see the rough outlines of what are called tectonic plates—the plates which make up the earth’s crust and mantle.rmants are (ideally ) native speakers of a language, who provide utterances for analysis and other kinds of information about the languages( e.g. translations, comments about correctness, or judgments on usage ).29. But a linguist’s personal judgments are often uncertain, or disagree with the judgments of other linguists, at which point recourse is needed to more objective methods of enquiry, using non-linguists as informants.30.Some recordings are made without the speakers being aware of the fact—a procedure that obtains very natural data, though ethical objections must be anticipated.31.Alternatively, attempts can be made to make the speaker forget about the recording, such as keeping the tape recorder out of sight, or using radio microphones.32.Speech is often unclear and ambiguous. Where possible, therefore, the recording has to be supplemented by the observer’s written comments on the non-verbal behaviour of the participants, and about the context in general.33.Often, the researcher wish to obtain information about just a single variable, in which cases a restricted set of questions may be used: a particular feature of pronunciation, for example, can be elicited by asking the information to say a restricted set of words.34.Some corpora attempt to cover the language as a whole, taking extremely selective, providing a collection of material that deals only with a particular linguistic feature.35.Sometimes a small sample of data will be enough to decide a linguistic hypothesis; by contrast, corpora in major research projects can total millions of words.36.An important principle is that all corpora, whatever their size, are inevitably limited in theircoverage, and always need to be supplemented by data derived from the intuitions of native speakers of the language, through either introspection or experimentation.37.Since the early years of the twentieth century, when the International Athletic Federation began keeping records, there has been a steady improvement in how fast athletes run, how high they jump and how far they are able to hurl massive objects, themselves included, through space.38.For the so-called power events – that require a relatively brief, explosive release of energy, like the 100-metre sprint and the long jump--- times and distances have improved ten to twenty per cent.39.Over the past century, the composition of the human gene pool has not changed appreciably, but with increasing global participation in athletics -- and greater rewards to tempt athletes -- it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early.40.These methods include strength training that duplicates what they are doing in their running events as well as plyometrics, a technique pioneered in the former Soviet Union.41.When a sprinter runs, Yessks expains, her foot stays in contact with the ground for just under a tenth of a second, half of which is devoted to landing and the other half to pushing off.42. By appling Newton's laws these motions, 'we can say that this athlete's run is not fast enough; that this one is not using his arms strongly enough during take-off,' says Dapena, who uses these methods to help high jumpers.43.That understanding took the later analysis of biomechanics specialists, who put their minds to comprehension something that was too complex and unorthodox ever to have been invented through their own mathematical simulations.44.Archaeology is partly the discovery of the treasure of the past, partly the careful work of the scientific analyst, partly the exercise of the creative imagination.45. Anthropology, at its broadest, is the study of humanity –our physical characteristics as animals and our unique non-biological characteristics that we call culture.46. Whereas cultural anthropologists will often base their conclusion on the experience of living with contemporary communities, archaeologists study past societies primarily through their material remains--- the buildings, tools, and other artifacts that constitute what is known as the material culture left over from former societies.47. Archaeologists in recent decades have developed ‘ethnoarchaeology’, where, like ethnographers, they live among contemporary communities, but with the specific purpose of learning how such societies use material culture – how they make their tools and weapons, why they build their settlements where they do, and so on.48. To archaeology, which studies all cultures and periods, whether with ot without writing, the distinction between history and pre-history is a convenient dividing line that recognizes the importance of the written word, but in no way lessens the importance of the useful information contained in oral histories.49. In this respect, archaeologists discover, the practice of the archaeology is rather like that of the scientist, who collects data, conducts experiments, formulates a hypothesis, tests the hypothesis against more data, and then, in conclusion, devises a model that seems best to summaries the pattern observed in the data.50. Looking back, it now seems quite incredible that in the national health systems that emerged in many countries in the years immediately after the 1939-45 World War, it was assumed without question that all the basic health needs of any community could be satisfied, at least in principle; the ‘invisible hand ’ of economic progress would provide.51.There had, of course, been dictionaries in the past, the first of these being a little book of some 120 pages, compiled by a certain Robert Cawdray, published in 1604 under the title A Table Alphabetical ‘of hard usual English words’.52.Beyond the practical need to make order out of chaos, the rise of dictionaries is associated with the rise of the English middle class, who were anxious to define and circumscribe the various world to conquer –lexical as well as social and commercial.53.The work was immense; filling about eighty large notebooks (and without a library to hand), Johnson wrote the definitions of over 40,000 words, and illustrated their many meanings with some 114,000 quotations drawn from English writing on every subject, from the Elizabethans to his own time.54.Johnson had worked for nine years, ‘with little assistance of the learned, and without any patronage of the great; not in the soft obscurities of retirement, or under the shelter of academic bowers, but amidst inconvenience and distraction, in sickness and in sorrow’.55.A few years ago, in one of the most fascinating and disturbing experiments in behavioural psychology, Stanley Milgram of Yale University tested 40 subjects from all walks of life for their willingness to obey instructions given by a ‘leader’ in a situation in which the subjects might feel a personal distaste for the actions they were called upon to perform.56.Spicifially Milgram told each volunteer ‘teacher subject’ that the experiment was in the noble cause of education, and was designed to test whether or not punishing pupils for their mistakes would have a positive effect on the pupils’ ability to learn.57.The supposed ‘pupil’ was in reality an actor hired by Milgram to simulate receiving the shocks by emitting a spectrum of groans, screams and writing together with an assortment of statements and expletives denouncing both the experiment and the experimenter.58.Prior to carrying out the experiment, Milgram explained his idea to a group of 39 psychiatrists and asked them to predict the average percentage of people in an ordinary population who would be willing to administer the highest shock level of 450 volts.59.How can we possibly account for this vast discrepancy between what calm, rational, knowledgeable people predict in the comfort of their study and what pressured, flustered, but cooperative ‘teacher’ actually do in the laboratory of real life.60.A modern hard-core sociobiologist might even go so far as to claim that this aggressive instinct evolved as an advantageous trait, having been of survival value to our ancestors in their struggle against the hardships of life on the plains and in the caves, ultimately finding its way into our genetic make-up as a remnant of our ancient animals ways.61.Thus, in this explanation the subject merges his unique personality and personal and moral code with that of larger institutional structures, surrendering individual properties like loyalty, self-sacrifice and discipline to the service of malevolent systems of authority.62.And finally, most forms of environmental pollution either appear to have been exaggerated, or are transient—associated with the early phases of industrialization and therefore best cured not by restricting economic growth, but by accelerating it.63.One form of pollution-- the release of greenhouse gases that causes global warming—does appear to be a phenomenon that is going to extend well into our future, but its total impact is unlikely to pose a devastating problems.64.Despite the intuition that something drastic needs to be done about such a costly problem, economic analyses clearly show it will be far more expensive to cut carbon dioxide emissions radically than to pay the costs of adaptation to the increased temperature.65.The impetus behind the development of these early plastics was generated by a number of factors—immense technological progress in the domain of chemistry, coupled with wider cultural changes, and the pragmatic need to find acceptable substitutes for dwindling supplies of ‘luxury ’materials such as tortoiseshell and ivory.66.Baekeland’s major contribution to the field is not so much the acual discovery of the material to which he gave his name, but rather the method by which a reaction between phenol and formaldehyde could be controlled, thus making possible its preparation on a commercial basis.67.Recently, however, it has been experiencing something of a renaissance, with renewed demand for original Bakelite objects in the collectors’ marketplace, and museums, societies and dedicated individuals once again appreciating the style and originality of this innovative material.68.The orbital cortex, the region that becomes active in Goel’s experiment, seems the bestcandidates for the site that feeds such feelings into higher-level thought processes, with its close connections to the brain’s sub-cortical arousal apparatus and centers of metabolic control.69.Such explanation, which was to take the English language west to America and east to India, was supported by scientific developments such as the discovery of magnetism ( and hence the invention of the compass), improvement in cartography and -- perhaps the most important scientific revolution of them all -- the new theories of astronomy and the movement of the Earth in relation to the planets and stars, developed by Copernicus.70.This growing concern about intellectual property rights was a feature of the period – it reflected both the humans notion of the individual, rational scientist who invents and discovers through private intellectual labor, and the growing connection between original science and commercial exploitation.71.However, in the 19th century scientific English again enjoyed substantial lexical growth as the industrial revolution created the need for new technical vocabulary, and new, specialized, professional societies were instituted to promote and publish in the new disciplines.72.Reseachers claims that the human personality is formed during the first two years of life, and during the first years children learn the basic skills they will use in all their later learning both at home and at school.73.As a result of the growing research evidence of the importance of the first three years of a child’s life, and the disappointing results from ‘Headstart ’, a pilot programme was launched in Missouri in the US that focused on parents as the child’s first teachers.74.At the age of three, the children who had been involved in the ‘Missouri’programme were evaluated alongside a cross-section of children selected from the same range of socio-economic backgrounds and family situations, and also a random sample of children that age.75.By the age of three, the children in the programme were significantly more advanced in language development than their peers, had made greater strides in problem solving and other intellectual, and were further along in social development.76.There is growing evidence in New Zealand that children from poorer socio-economic backgrounds are arriving at school less well developed and that our school system tends to perpetuate that disadvantage.cation from the age of three to five is undoubtedly vital, but without a similar focus on parent education and on the vital importance of the first three years, some evidence indicate that it will not be enough to overcome educational inequity.78.Up to now, people have blamed this loss of delta land on the two large dams at Aswan in the south of Egypt, which hold back virtually all of the sediment that used to flow down the river.79.But when the Aswan were constructed in the 2 0th century to provide electricity and irrigation, and to protect the huge population center of Cairo and its surrounding areas from annual flooding and drought, most of the sediment with its natural fertilizer accumulated up above the dam in the southern, upstream half of Lake Nasser, instead of passing down to the delta.80.Daniel Jean Stanley of the Smithsonian Institute noticed that water samples taken in Cairo, just before the river enters the delta, indicated that the river sometimes carriers more than 850 grams of sediment per cubic metre of water – almost half of what it carried before the dams were built.81.According to Siegel, international environmental organizations are beginning to pay closer attention to the region, partly because of the problems of erosion and pollution of the Nile delta, but principally because they fear the impact this situation could have on the whole Mediterranean coastal ecosystem.82.The expression provided an attractive but informative name for a research programme that encompassed such previously disparate fields as operations research, cybernetics, logic and computer science.83.By the late 1980s, the term AI was being avoided by many researchers, who opted instead to align themselves with specific sub-disciplines such as neural networks, agent technology, case-based reasoning, and so on.84.The effect of repeatedly moving the goal-posts in this way was that AI came to refer to ‘blue-sky’ research that was still years away from commercialization.85.HNC software of San Diego, backed by a government agency, reckon that their new approach to artificial intelligence is the most powerful and promising approach ever discovered.86.When hill-farmers, for example, can make more money in a few weeks working as porters for foreign trekkers than they can in a year working in the fields, it is not surprising that many of them give up their farm-work, which is thus left to other members of the family.87.Although tourism inevitably affects the region in which it takes place, the costs to these fragile environments and their local cultures can be minimized.88.For instance, a native corporation in Alaska, employing local people, is running an air tour from Anchorage to Kotzebue, where tourists eat Arctic food, walk on the tundra and watch local musicians and dancers.89.When fragments were analysed by experts at the giant glass manufacturer Pilkington, which had made the pane, they found that minute crystals of nickel sulphide trapped inside the glass had almost certainly caused the failure.90.It is made by heating a sheet of ordinary glass to about 620℃to soften it slightly, allowing its structure to expand, and then cooling it rapidly with jets of cold air.91.When the interior finally solidifies and shrinks, it exerts a pull on the outer layer that leaves it in permanent compression and produces a tensile force inside the glass.92.As cracks propagate best in materials under tension, the compressive force on the surface must be overcome before on the surface must be overcome before the pane will break, making it more resistant to craking.93. These crystals can exist in two forms: a dense from called the alpha phase, which is stable at high temperatures, and a less dense form called the beta phase, which is stable at room temperature.94. Ironically, says Graham Dodd, of consulting engineers Arup in London, the oldest pane of toughened glass known to have failed due to nickel sulphide inclusions was in Pilkington’s glass research building in Lathom, Lancashire.95.So even if, on average, there is only one inclusion in 7 tonnes of glass, if you experience one nickel sulphide failure in your building, that probably means you’ve got a problem in more than one pane.96. Before the breeding season begins, food reserves must be built up to support the energy cost of reproduction, and to provided for young birds both when they are in the nest and after fledging.97.Thus many temperature-zone birds use the increasing day lengths in spring as a cue to begin the nesting cycle, because this is a point when adequate food resources will be assured.98.The simultaneous production of masses of bamboo seeds (in some cases lying 12 to 15 centimeters deep on the ground ) is more than all the seed-eating animals can cope with at the time, so that some seeds escape being eaten and grow up to form the next generation(Evens 1976).99.Some plants reach maximal photosynthesis at one-quarter full sunlight, and others, like sugarcane, never reach a maximum, but continue to increase photosynthesis rate as light intensity rises.100.Plant species become adapted to living in a certain kind of habitat, and in the process evolve a series of characteristics that prevent them from occupying other habitats.。

“支架式”教学在高中英语读写课中的实践

“支架式”教学在高中英语读写课中的实践

“支架式”教学在高中英语读写课中的实践作者:葛春生来源:《江苏教育·中学教学版》2014年第03期长期以来,高中英语的写作教学没有得到教师和学生的普遍重视。

一谈到写作,教师不知如何实施,缺乏循序渐进的训练计划;学生对于写作缺乏热情,更是不知如何入手。

近年来,部分教师积极探索高中英语写作教学的新途径,如,他们更加重视“过程写作”的教学方式,也有部分教师潜心研究“读写”结合的教学模式。

教育部颁布的《普通高中英语课程标准(实验)》明确指出,高中英语课程的总目标是“使学生在义务教育阶段英语学习的基础上,进一步明确英语学习的目的,发展学生自主学习和合作学习的能力;形成有效的英语学习策略;培养学生的综合语言运用能力”,写作正是学生综合语言运用能力的具体体现。

笔者认为,通过开展“支架式”教学让学生顺利完成写作任务,是开展写作教学的有效路径。

一、“支架式”教学模式的理论基础教师把教学任务的设计放在学生的“最近发展区”,实际上就抓住了促进他们发展的核心。

苏联心理学家维果茨基提出的“最近发展区”理论,告诫广大教师应该走在发展的前面,并通过教学帮助儿童消除其所要解决的问题(即“最近发展区”)和原有能力(即“已有发展区”)之间可能存在的差异。

而实现这个目的的最好手段之一,就是采用不断帮助学生从一个智力水平提升到另一个更高水平的“支架式”教学。

“支架”(scaffolding)原是指建筑行业使用的“脚手架”,这里用来比喻对学生解决问题和建构意义起辅助作用的概念框架。

根据欧共体“远距离教育与训练项目”(DGXIII)的有关文件,“支架式”教学策略被定义为:为学习者建构对知识的理解提供的一种“概念框架”(conceptual frame- work),这种框架中的“概念”是为发展学习者对问题的进一步理解所需要的,为此,事先要把复杂的学习任务加以分解,以便与学习者的理解逐步引向深入。

支架式教学一般把教学分成这样几个环节,以构成有机的统一整体:分析学生起点水平——创设任务情境——提供系列支架——学生独立探索——师生协作学习——教学效果评价。

2024cpa会计大纲

2024cpa会计大纲

2024cpa会计大纲英文回答:The 2024 CPA Exam Content Outlines contain the following core topic areas:Financial Accounting & Reporting (FAR)。

Conceptual Framework.Financial Statement Presentation.Contributed and Earned Capital.Cash and Cash Equivalents.Investments.Receivables.Inventories.Property, Plant, and Equipment. Intangible Assets.Liabilities.Equity.Revenue Recognition.Expense Recognition.Subsequent Events.Related Parties.Auditing & Attestation (AUD)。

Concepts and Responsibilities.Internal Control.Risk Assessment.Materiality.Analytical Procedures. Evidence.Audit Reporting.Special Considerations. Regulation (REG)。

Federal Taxation.Business Law.Ethics.Business Environment & Concepts (BEC)。

Financial Reporting and Concepts.Corporate Governance.Economic Concepts.IT and Business Processes.中文回答:2024 年注册会计师考试内容大纲包含以下核心主题领域:财务会计与报告 (FAR)。

高等数学的英文版教材答案

高等数学的英文版教材答案

高等数学的英文版教材答案I. Introduction to Higher MathematicsHigher Mathematics is a fundamental subject that plays a crucial role in various fields of study, such as engineering, physics, economics, and computer science. To fully comprehend the concepts and principles of Higher Mathematics, it is essential to have access to accurate and comprehensive textbooks. This article aims to provide an overview of the English version of a Higher Mathematics textbook, focusing on its content, structure, and the importance of having reliable answer keys.II. Content of the English Version of Higher Mathematics TextbookThe English version of the Higher Mathematics textbook covers a wide range of mathematical topics, including calculus, linear algebra, differential equations, probability theory, and mathematical modeling. Each chapter delves into specific concepts and provides detailed explanations, accompanied by illustrative examples to enhance understanding.1. Calculus:The section on calculus is divided into differential calculus and integral calculus. It introduces key principles such as limits, derivatives, and integrals. Various calculus techniques, such as the chain rule, product rule, and fundamental theorem of calculus, are thoroughly explained.2. Linear Algebra:The linear algebra section encompasses topics like vector spaces, matrices, determinants, and eigenvalues. It illustrates the fundamentaltheories of linear algebra and introduces essential concepts, including linear transformations, spanning sets, and eigenvectors.3. Differential Equations:In the differential equations chapter, students learn about different types of differential equations, such as first-order, second-order, and higher-order equations. The solution methods for both homogeneous and non-homogeneous equations are outlined, along with applications in various fields.4. Probability Theory:The section on probability theory introduces students to basic concepts, such as random variables, probability distributions, and expected values. It covers topics like binomial, Poisson, and normal distributions, enabling students to apply probability theory in real-life situations.5. Mathematical Modeling:The mathematical modeling section explores the process of formulating a mathematical model to describe real-world phenomena. It highlights the importance of applying mathematical techniques to analyze and solve practical problems.III. Structure of the English Version of Higher Mathematics TextbookThe English version of the Higher Mathematics textbook follows a well-organized structure, with each chapter building upon the previous one. It presents complex mathematical content in a systematic manner, ensuring a progressive learning experience for students.1. Chapter Organization:Each chapter begins with an introduction that outlines the key concepts and learning objectives. It is followed by concise explanations and illustrative examples that aid in conceptual understanding. The chapters conclude with a summary of the main points covered, allowing for a quick review.2. Exercises and Problems:Throughout the textbook, numerous exercises and problems are provided to reinforce the learned concepts. Students can practice solving mathematical problems to enhance their problem-solving skills and apply the newly acquired knowledge. The textbook also offers answers to the exercises for self-assessment.IV. Importance of Reliable Answer KeysHaving reliable answer keys is crucial for students studying Higher Mathematics. These answer keys serve as a valuable resource to verify the accuracy of their solutions and improve their problem-solving abilities. Furthermore, they provide immediate feedback, allowing students to identify and rectify any mistakes made during the learning process.V. ConclusionThe English version of the Higher Mathematics textbook serves as a comprehensive guide for students studying Higher Mathematics. With its well-structured content, illustrative examples, and reliable answer keys, the textbook enhances students' understanding of mathematical concepts and facilitates their learning experience. It equips them with essential skillsrequired for various fields, enabling them to excel in their academic and professional pursuits.。

人类学著作专业术语翻译

人类学著作专业术语翻译

一妻多夫词汇与专业术语above and below these altitudes(在这个上在那个下)上下这样的高度Acharya阿查里雅acknowledge paternity承认父亲/权actors’ models被调查者所表述的模式adept at local politics对当地政治事务了如指掌advantage for trading in Tibet(which is a major)这对他们前往西藏从事贸易活动极为有利androcentric男子中心主义的affairs of the village panchayat 村落“潘查雅特”的工作affect day-to-day interpersonal dynamics 使日常人际关系更加微妙、多变affinal ties婚姻关系affines通过联姻结成的亲戚,姻亲affines-siblings 姻亲—同胞agnate 父系亲属(父系亲属的远亲:祖父的兄弟的子孙和子女FFBSS and FFBSD,更远的父系亲属:有着共同祖先的、五代人或五代人以上的远亲:同氏族兄弟姐妹)父系的,同种族的,同族的;父系,同族亲属,同种族aggregate(put different amounts, pieces of information etc together to form a group or a total)all castes and classes各个种姓的阶级all primary points of discrimination最基本的差异(点)all stances(in)在所有条件中Allen艾伦alliance联姻范围analytical calculus (an)analytical tool(an)分析工具ancestor worship祖先崇拜ancestral pedigrees祖先的家谱ancestral ties with Nepalis祖先与尼泊尔人之间的关系apical ancestor远祖archetypal models for social structure社会结构愿望模式archetypal models of social structure社会结构原型模式area ethnographically unknown(an)从民族志角度来说,那里尚未被人所知arrangements of polyandry一妻多夫婚as of this date 迄今(为止)as opposed to… (与)……相对的,相对于……的as rarely happens像很少发生的那样associations联合体assume much of the responsibility for household leadership在家庭事务中已担负起重要责任avoid compromising Nyinba claims of Tibetan origins避免……做出让步Aziz阿齐兹barest outlines of Tibetan culture and social structure(the)对藏族文化和社会结构…一些最表层的外部轮廓Barkhang 巴康base(at)在基部,从根本上说,从根本上basic categories of kin relationships(the)亲属关系的基本范畴basic information掌握基础资料beliefs that…(by)相信,认为……belong in=if something belongs somewhere, that is the right place or situation for it居住BenderBennett本涅特BerknerBerreman白瑞曼Bhotiasbilateral kinship双边亲属关系bilaterality of kinship亲属关系的双边性bipartite and tripartite models of village structure两部分和三部分组成的村落结构模式Bogoslovskij波格斯洛夫斯基boiling point/freezing point/melting point沸点/冰点/熔点bone descent骨系血统bone figure骨系地位bone ones骨系相同的人bone 骨系born out of wedlock 非婚生的Brahmans婆罗门branch lineages家系分支bring a wife home娶一个妻子brother of one of their ancestors(a)作为尼巴人祖先的三兄弟中一个Buddhist doctrines of reincarnation 佛教有关轮回、转世的教义Bura布拉人by caste principles按照种姓制度by reference to 根据by similar reason出于类似的理由by this account 根据/按照这种说法Byansi布扬西人Carrasco 卡拉斯科Carter卡特Cassinelli卡西内利caste principles种姓制度category 范畴,种类,类型,类别cede priority in sexual rights to his younger brothers把性生活方面的优先权让给弟弟们center around the dual rebuilding of society 围绕(对)社会的双重重建(展开的)central plateau(the)高原腹心chains of genealogical linkage 家系链changes over time(their)历史演变Chandra钱德拉character and physical traits人的性格及体质特征characteristic of Tibetan societies藏族各地社会的共同特点characteristic themes独具特色的主题chart勾画出……的基本脉络Chetri (Chhetri)刹蒂利children not his own 不是亲生的孩子circle of clans of status comparable to their own(a)地位与本氏族相当的几个氏族circles of kin亲属关系范畴circles of relatives亲属圈citizen-landholders平民——土地所有者civic entitlements公民权clan hierarchies氏族等级制clan memberships 氏族成员身份clan member氏族成员clan names 氏族名clan sections氏族各部clanship氏族制度clan siblings同氏族兄弟姐妹(五代以上同父系/男性祖先的后代)clanspeople同氏族的人classificatory cross-cousins 分类学意义上的交错从表亲close and distant kin近亲和远亲closely articulated spheres of cultural and social life 密切关联的文化与社会生活的方方面面closest, or inner, circle of clanspeople(the)同氏族的近亲或内亲closure against the world自我封闭状态co-husbands 共妻的丈夫co-wife 共夫的妻子collateral relative 旁系亲属collective activities集体活动collectively held forest (村民)集体所有的森林common identity彼此认同/共同的身份commonalities in origins共同的出身/起源commensality 共餐?commonly trace … to…都提到……common wife(the)共同的妻子community-wide ranking systems 全社会范围内的等级系统complex arrangements and alignments of social life社会生活中种种复杂的安排和组合complementary filiation补充性亲子关系(网络)complementary filiatives ?concept of domains (the)领域概念concept of hereditary bone(The)骨质遗传观念concepts of fission and fusion in segmentary systems 局部系统的裂变与聚变概念concepts or systems linking them(the)与之关联的(把他们联系在一起的)概念或系统conceptual divisions(such)概念化的划分方式(这种)conceptual identification 概念认同(?)concerns with matters of population对人口问题的关注conjoint marriage(in a)联合式婚姻conjugal groupings夫妇群体connection or involvement (the)联系,关系consanguineal血缘的,血亲的consider its contexts了解它的来龙去脉contribute to the increasing erosion of good farmland使良田受到日益加剧的侵蚀corporate territorial groups具有共同领地意识的群体corporate-groups共同体cousin 堂兄co-wives共同的妻子create links across…把不同氏族的人联系起来cross-cousin marriage交错从表婚,姑舅表婚cross-cousins交表婚(父母异性兄弟姐妹的子女间的关系:父亲姐妹的孩子,母亲哥弟的孩子,与兄弟姐妹及自已之间都叫做交错从表)cross-generational relationships跨代的亲属关系cross-sectional survey(a)横断面调查cross-sex links 跨性别/异性的联系/关系/结合cultivated fields耕地cultural and social entailments(the)文化与社会后果cultural borrowing 文化借入cultural themes文化主题currency of status rivalry (the)争取社会地位的货币(隐喻)cycles of domestic development 家庭发展周期理论Darchula达楚拉daughter-in-law 儿媳descend from…是……的后代descent血统descent categories血缘范畴descent constructs血统构筑物descent credentials 同血统的人相互信任,(证明信)descent groups 血缘群体,继嗣群descent rules 继嗣规则descent units血统单元descent-cum-stratum ascription 血统和地位归属determine the paternity of children produced in polyandrous unions确定一妻多夫婚中孩子的亲权关系dharma达磨differentiated by在……存在差别different subsystems of social life(the)社会生活中不同的子系统dislike of immigration(the)对外来移民感到厌恶dispense justice=decide whether or not someone is guilty of a crime and what punishment they should receive裁决、断案dispersed residence分散居住display the diversity and complexity of polyandrous arrangements 展示一妻多夫婚的多样性与复杂性distinct (clearly different)明显不同的distinct (quite)(from …)(与……)截然不同的,完全不同的distinctive style(a)独特风格diverse subsistence activities 不同的谋生活动divide up the seamless web of social life把天衣无缝的社会生活加以分割divine beings神祗divine justice 神判divine order(a)神的秩序Dolpo多尔波domestic arrangements家庭组织形式?domestic order家庭内部的秩序domestic politics家庭政治学double unilineal(双系制?)(复系继嗣nonunilineal descent)Dozam Khola valleys (the)多扎科拉河谷Dozam Khola(the)多扎科拉河dual sets of models双重模式Dullu都鲁dynamics of social structure(the)社会结构的变动each household line各个家户世系earlier years of their rule(in the)在其统治初期effect of this is(The)这实际上是Ekvall艾克瓦尔elaboration of…对……精心表述embedded culturally and socially that none would suffice(so deeply)如此深深地被嵌入尼巴人的文化与社会中,以至谁也没有能力把这两个问题解释清楚embellish upon the literary sources 对文献资料的加工、润色endogamous等级内婚(的),内婚的,(exogamous 外婚的)epiphenomena副现象establish a key parameter of… 建立…关键性参项establish a village settlement 在村里建立了自己的住宅区establish patterns for…建立了种种模式establish ritual friendships with…建立礼仪性的友好关系ethnic closure(the)族群的自我封闭ethnic group 族群Evans-Pritchard艾文思-普利查德evolution of structural relationships(the)结构关系演变exclusive control over their wives’ sexual and childbearing capacities在性生活及生育能力方面的排他性的控制exhortations for village unity(in)为了维护村民的团结一致exotic biases鄙薄异域习俗的偏见,对异域习俗的偏见exotic preoccupations感到诧异expansion of landholdings(the)耕地扩展explain these exceptions by reference to specific, historical events把这种例外情况归因于某些特定的历史事件explorations of the cultural features of kinship systems对亲属关系制度中所体现的文化特征的开拓性研究expressed models被抽取出来的模式extended family 扩大家庭extended family household 扩展型家户extended period(an)拖的时间较久(偏正词组:主谓词组)external logic外在的逻辑evolution of structural relationships(the)结构关系演变false consciousness虚假意识families家族,家庭father’s sister(the)姑母fathers siblings父方的同胞兄弟姐妹father-son links父子关系farther west and south再往西、往南/西面、南面更远一点fieldwork 田野调查filiation 亲子关系first wife(the)大老婆,原配folk theories of human attributes民间关于/流传的人类属性理论,人类属性的民间理论follow whatever best aids understanding…注重分析那些最有助于我们理解…followers of信奉form what came to be known as the Kalyal confederacy组成世人所说的卡尔亚尔联盟Fortes 福特斯founders of their clan 家系的创建人four roads of kinship四路亲属fourfold schemata四重的先验图式framework for future village structure(the)未来村落结构的框架frameworks of analysis分析框架fraternity polyandrous marriage 一妻多夫的兄弟共妻婚free subjects 自由民full citizens完全意义上的公民full civic status 完全公民身份full genealogies for lineages(世系)完整的家谱full rights and prerogatives vis-à-vis the state国家赋予的充分的权利和某些优先权fundamental social cleavage(one)一种基本的社会差异Furer-Haimendorf 福勒—海门道夫Geertz戈尔茨gender性别genealogical data家谱资料genealogical matters 家系问题general prejudice toward immigrants(the)普遍对移民者存在偏见Giddens吉顿斯god of their household line(the)家系之神Goldstein 戈尔德斯坦Goody古迪Grandmother Goddess of Prosperity and Agricultural Wealth兴旺与丰收祖母女神greater and lesser inclusiveness(of)涵盖大小不一的grounded in以……为依据的groups群体Guge 古格guiding behavior对人们的行为的引导hamlet-dispersed modes of settlement边缘小村扩散的聚落模式hamlets外围住宅区,边缘小村,隶属同一个村的小村(组,如达隆雪)have a disproportionate effect on the others对其他子系统特别大的影响作用have established patterns for alliance and kinship alignments in the present day已为当今的联姻范围及亲属关系建立了种种模式have far-reaching consequences for the country's economy对国家的经济产生深远影响have no relevance in …与……没有联系have social repercussions发挥社会作用hearth炉灶,火塘hereditary lamas世袭喇嘛hereditary rank 世袭等级hereditary social strata(such)这种世袭性社会地位Hiatt希亚特high lord of ancient lineage(a)世系久远的名门大户(ancient lineage久远的世系)higher ranking in a caste society在一个种姓制社会中(获得)较高社会地位higher-level political fields上级行政机构各部门Hindu state(in a)在一个信仰印度教的国家里Hindu-Buddhist contact zone(the)印度教与佛教的接触带Hindus of high castes 高种姓印度教徒们hold a certain precedence in marriage在婚姻生活方面拥有一定的优先权(委婉:性生活)hold knowledge about the community- wide clan system了解全社区范围内的氏族体系hold rights of ownership over their land享有对其土地的占有权Hofer霍费尔Holland霍兰德Holy霍利household gods家神household membership家户成员资格/身份household registers 户口登记资料household siblings同一户人家中的(兄弟)姐妹household system 家户制度households of married lamas喇嘛户human reproduction人类繁衍Humla district久姆拉地区Humla久姆拉地区hyper- to an excessive degree; above; over 过度; 在...上; 高於hypergamous marriage 同层婚姻,与上层或地位高的人联姻hypo- less than usual, especially too little;under; beneath 在...下; 低於; 次於hypogamous marriage 向下流动的婚姻(顺向调动—逆向调动?)顺向婚姻?ideas about substance transmissions物质遗传观念idiom 方言,土语,成语inasmuch as(=because)因为…independent principalities 独立侯国identify the uniformities in certain aspects of Tibetan life对藏族生活中某些方面的一致性加以识别(加以识别=进行识别)identify the diversity and features of regional micro-variation in others对其他方面的、地区性微小变化方面的不同与特点进行分析idiosyncratic 有特点的,有自己的特点ill-suited to agriculture不适合农作物生长的immediate descendants(the)直系后代immediate family(one's)直系亲属(父母、子女、兄弟、姐妹)impoverished villages I passed along my way沿途那些贫困、凋敝的村庄natural inference is that(The)…若依据常理推断的话,只能说……inform sth. =give (sth) its essential features; pervade 赋予(某事物)其特徵; 贯穿; 遍及: the sense of justice which informs all her writings 体现在她所有写作中的那种正义感in hunting-and-gathering societies狩猎采集社会in speaking of kin在提及“亲属”时in the district and farther afieldin this regard在这方面incest rules 禁止乱伦的规定increasing and increasingly dramatic pace of change(the)社会变革的速度越来越快Inden英顿index to sociocultural change(an)社会文化变革的索引Indian varna system印度的瓦尔纳制度individual clan names 个人的氏族名individual’s social identity 个人的社会身份idiom for a system of hierarchical clanship(the)等级氏族制的习惯用语inferiors下等人inherently suited to Tibetan behavioral forms对藏族的行为方式具有固有的适应本能institution of spirit mediumship精神中介机制(格勒翻译有误:灵媒机制-精神通灵机制)interdine 共餐,同桌吃饭intergroup behavior群际行为intergroup conflict群体间冲突intergroup relation群际关系interlocking 连锁的,互相结合的,环环相扣的(?)interrelated(be)互相交织在一起intersecting relationships multifaceted relationships which encompass both erotic, economic and hierarchical dimensions 相互交叉的关系,其中既有性爱方面的、也有经济方面的以及等级制度方面的involve包括involvement (the)联系,关系isolated societies like that of Nyinba(the most)像尼巴人那样的地处偏远的社会items almost entirely of their own manufacture 几乎完全是他们自己加工的东西its own cultural momentum本身具有的文化力量Jaschke雅什科jat加特joint family 联合家庭Kalyal confederacy(the)卡尔亚尔联盟Karnali River(the)格尔纳利河Karnali Zone(the)格尔纳利边疆区,格尔纳利一带Kasikot 卡西考特Keesing基辛Khasa喀萨Kin血亲,家人,亲戚kin terms亲属称谓kingdom of Gorkha(the)廓尔喀王国kinship(blood relationship)血缘关系,血族关系,亲属关系(不能译为“亲属制度”)kinship alignments亲属关系kinship analogies亲属之间的相似之处(增词思考:亲属—相似之处)kinship and politics亲属关系与政治kinship calculation 亲属关系计算kinship calculus (the)近亲的算法kinship commitmentskinship idioms亲属之间的有关习惯/习语kinship proximity 最近的亲属关系Kopytoff克比托夫Ladakh 拉达克landholders土地所有者larger set of ideas about mixing of substances(a)物质混合的种种思想观念larger, comparative study(a)更大范围的比较调查(范围更大的—更大范围的)lawless activitieslegal sanctions法律制裁legendary Khasa ancestry(of)喀萨是他们传说中的祖先legends of origin起源的传说legitimacy of claims to higher status 要求获得更高社会地位的合法性level of cultural models(the)文化模式的层面Levine列文life-long co-residence(their)终身住在一起limit men’s reproductive opportunities限制男人在生儿育女方面的机会Limi里米line of ancestry(a)世代的祖先line of males over time(a)过去男性方面的世系line of people from past to present(the)从古到今同一家系lineage segments世系(血统)的组成部分lineages家系,世系群lines of descent 血统世系lines of inheritance, succession, and descent传承、继承与血统lines that parallel descent使血统平行的线,平行线上的血统line世系lineal ancestors直系祖先lineal descendant直系子孙。

科技英语

科技英语

1. Auditory Perspectives of Different Types of Music对不同类型音乐的听觉效果研究2. Harmful Effects of Electromagnetic Fields on Humans电磁场对人类的有害影响研究3. Using Water Resources for Irrigation in Semiarid Land用水资源在半干旱地区灌溉4. Protecting Water Quality Through the Successful Integration of Research and Education成功的整合研究与教育可以保护水质5. The Single Community Concept: A Model for Adult Environmental Education单一社区:一种成年人环境教育模式6. Physics and Art: Uncovering Conceptual Linkages体育与艺术:发掘其概念上的联系7. Use of Diamond for Electric Devices钻石在电子设备中的应用8. Yellow Fever's Effect on Transportation and Commerce黄热病在交通和商业中的影响9. The Nature of Student Science Projects in Comparison to Educational Goals for Science学生科研项目的本质与科学教育目标的比较10. A Qualitative / Quantitative analysis of the Administrative Management Institute at Comell University康耐尔大学行政管理学院的一项定性/定量分析The Americans With Disability Act and Its Applicability to the Mentally Ill, Human Immune-Deficiency Virus and AIDS Populations: A Statistical Analysis12.Studies on dynamics of the clutch optimizing engaged –schedule of bus AMT大客车AMT的离合器最佳接合规律动力学研究二、句子英译中(1) The doctor’s extremely quick arrival and uncommonly careful examination of the patient brought about his very speedy recovery.医生迅速到达,非常仔细地检查了病人,(因此) 病人很快就康复了。

国家开放大学电大《管理英语2》2020期末试题及答案

国家开放大学电大《管理英语2》2020期末试题及答案

国家开放大学电大《管理英语2》2020期末试题及答案一、选择题(每题2分,共20分)1. The purpose of management is to make sure that an organization achieves its goals by efficiently and effectively utilizing its resources. The word "efficiently" means ________.A. in a timely mannerB. at a low costC. in an effective wayD. with high efficiency答案:D2. A manager needs to possess certain skills to be effective. Which of the following is NOT one of the key management skills?A. Conceptual skillsB. Technical skillsC. Interpersonal skillsD. Financial skills答案:D3. Which of the following is NOT a function of management?A. PlanningB. OrganizingC. LeadingD. Marketing答案:D4. A company's mission statement defines its________.A. goalsB. visionC. valuesD. strategy答案:C5. Which of the following is a characteristic of a good leader?A. Micro-managementB. Lack of communicationC. Inspiring and motivatingD. Autocratic decision-making答案:C二、填空题(每题2分,共20分)6. Management is the process of coordinating and________ the work of a group of people to achieve organizational goals.答案:directing7. A manager's decision-making process includes identifying the problem, generating alternatives, evaluating alternatives, and ________.答案:making a decision8. A company's culture is the set of values, beliefs, and norms that guide the behavior of its________.答案:employees9. In the context of management, the term "span of control" refers to the number of employees a manager can effectively ________.答案:supervise10. The ________ function of management involves determining what needs to be done, how it will be done, and who is responsible for doing it.答案:organizing三、简答题(每题10分,共30分)11. What are the four functions of management? Briefly describe each function.答案:The four functions of management are:1. Planning: Determining what needs to be done, how it will be done, and who is responsible for doing it. This involves setting goals and objectives, developing strategies, and creating action plans.2. Organizing: Establishing the structure of the organization, assigning tasks, and allocating resources to achieve the goals set in the planning stage.3. Leading: Directing, guiding, and motivating employees to work towards achieving the organization's goals. This function includes communication, leadership styles, and conflict resolution.4. Controlling: Monitoring and evaluating the organization's performance against the goals and objectives set in the planning stage. This function involves measuring performance, comparing it to the standards, and taking corrective action if necessary.12. Explain the difference between leadership and management.答案:Leadership and management are closely related concepts but have distinct differences. Management is the process of coordinating and directing the work of a group of people to achieve organizational goals. It focuses on planning, organizing, leading, and controlling.Leadership, on the other hand, is the ability to influence and inspire others to work towards a common goal. It is about motivating, guiding, and empowering employees to achieve their full potential. While management is more about processes and systems, leadership is more about people and relationships.13. Discuss the importance of organizational culture in the management of a company.答案:Organizational culture plays a crucial role in the management of a company. It is the set of values, beliefs, and norms that guide the behavior of its employees. A strong organizational culture can have several benefits:1. Employee engagement: A positive culture fostersa sense of belonging and commitment among employees, leading to higher engagement and productivity.2. Employee retention: A strong culture canattract and retain talented employees who share the company's values and vision.3. Consistency: Organizational culture ensures consistency in decision-making, communication, and customer service.4. Innovation: A culture that encouragescreativity and risk-taking can drive innovation and growth.5. Adaptability: A strong culture can help a company adapt to changes and challenges by promoting unity and resilience.四、案例分析题(每题25分,共50分)14. Read the following case study and answer the questions below.Case Study: XYZ CompanyXYZ Company is a medium-sized manufacturing firm that has been experiencing rapid growth in recent years. However, the company's management team has been struggling to keep up with the increased demand fortheir products. The company's employees are working long hours, and customer satisfaction has been declining.Question 1: Identify potential management issues that XYZ Company may be facing based on the case study.答案:Based on the case study, XYZ Company may be facing the following management issues:1. Inadequate planning: The management team may not have effective plans in place to handle the increased demand for their products.2. Poor organization: The company may lack a clear structure and roles, leading to confusion and inefficiency.3. Insufficient leadership: The management team may not be providing the necessary guidance and motivation to employees, resulting in low morale and productivity.4. Inadequate control: The company may not be monitoring and evaluating its performance against the standards set in the planning stage.Question 2: Provide recommendations to address the management issues identified in the case study.答案:To address the management issues identified in the case study, XYZ Company can consider the following recommendations:1. Develop a comprehensive plan: The management team should create a detailed plan that outlines how to handle the increased demand for their products, including production schedules, resource allocation, and employee workload.2. Streamline organization: The company should establish a clear organizational structure and define roles and responsibilities to improve efficiency.3. Enhance leadership: The management team should focus on developing their leadership skills to provide better guidance, motivation, and communication to employees.4. Implement control measures: The company should implement a system to monitor and evaluate its performance, identify areas for improvement, and take corrective action as needed.。

认知语言学视角下网络软广告中的隐喻研究

认知语言学视角下网络软广告中的隐喻研究

分类号密级UDC注1学位论文认知语言学视角下网络软广告中的隐喻研究(题名和副题名)王梦洋(作者姓名)指导教师楚军教授电子科技大学成都(姓名、职称、单位名称)申请学位级别硕士学科专业外国语言学及应用语言学提交论文日期2018.3.15论文答辩日期2018.5.20学位授予单位和日期电子科技大学2018年6月答辩委员会主席曾路评阅人王爱华曾路注1:注明《国际十进分类法UDC》的类号。

A Study of Metaphor in Internet Advertorials from thePerspective of Cognitive LinguisticsA Master Thesis Submitted toUniversity of Electronic Science and Technology of ChinaDiscipline:Foreign Linguistics and Applied Linguistics Author:Wang Mengyang Supervisor:Prof.Chu JunSchool:School of Foreign Languages摘要摘要相对于硬广告而言,软广告虽然同样以宣传和营销为目的,但其商业意图通常未直接表达出来,广告形式具有较强的隐蔽性,潜移默化地影响受众。

近年来,软广告受到学术界的广泛关注,对其研究主要集中于广告学、公关学、广告心理学范畴。

而语言学界多以传统广告为研究对象,主要研究其修辞效果和语用效应。

有关软广告的修辞学和语用学等研究较少,对受众的认知影响的研究更为罕见。

本研究以认知语言学相关理论为研究视角,分析软广告中隐喻使用的特点、隐喻的形成过程以及隐喻的认知效应,试图解释软广告是如何通过隐喻传达其广告意图,让受众潜移默化地接受、认可所广告的品牌和产品。

本文以国产知名护肤品牌—百雀羚的官方微博上发布的软广告为研究对象,收集语料并建立语料库;将收集到的软广告语料分为文字广告(80则)、图片广告(86则)和视频广告(1则)三类进行整理和分析。

英语辩证观点作文outline

英语辩证观点作文outline

英语辩证观点作文outlineIn examining the concept of dialectical viewpoints, it becomes apparent that it encompasses a multifaceted approach to understanding and evaluating various ideas, issues, and phenomena. Dialectics, rooted in ancient philosophical traditions but continually evolving, provides a framework for comprehending the complexities of the world. This essay will explore the essence of dialectical viewpoints, illustrating how they facilitate critical analysis, promote intellectual growth, and foster a deeper understanding of the interconnectedness of diverse perspectives.Firstly, dialectical viewpoints encourage critical analysis by acknowledging the dynamic nature of reality. Rather than viewing phenomena as static and isolated entities, dialectics emphasize the interplay of contradictions and tensions. This approach challenges individuals to question binary thinking and embrace ambiguity, recognizing that truths are often contextual and subject to change. For example, in examining social issues such as inequality, a dialectical perspective would entail exploring the intersecting factors of race, class, gender, and power dynamics, rather than reducing the discussion to simplistic dichotomies.Furthermore, dialectical viewpoints promote intellectual growth by encouraging dialogue and debate. By engaging with opposing perspectives, individuals are prompted to reassess their assumptions, refine their arguments, and expand their knowledge base. Instead of viewing disagreement as a barrier to understanding, dialectics frame it as an opportunity for intellectual exchange and synthesis. Through dialectical discourse, new insights emerge, and deeper understandings are attained. For instance, in academic settings, dialectical discussions stimulate critical thinking skills by challenging students to articulate and defend their positions while respectfully engaging with alternative viewpoints.Moreover, dialectical viewpoints facilitate a deeper understanding of the interconnectedness of diverse perspectives. Rather than privileging one viewpoint over others, dialectics recognize the validity and significance of multiple viewpoints. Thisinclusive approach encourages individuals to consider the broader context in which ideas and perspectives emerge, acknowledging the historical, cultural, and social factors that shape them. By recognizing the interconnectedness of diverse perspectives, dialectics promote empathy, tolerance, and a more holistic understanding of complex issues. For example, in the context of international relations, a dialectical approach would entail considering the perspectives of various stakeholders, including different nations, cultures, and interest groups, to arrive at a more nuanced understanding of global dynamics.In conclusion, dialectical viewpoints offer a powerful framework for understanding and evaluating the complexities of the world. By encouraging critical analysis, promoting intellectual growth, and fostering a deeper understanding of the interconnectedness of diverse perspectives, dialectics enrich our capacity to engage with the world thoughtfully and empathetically. Embracing dialectical thinking enables us to navigate the complexities of contemporary life with greater insight, resilience, and humility.。

六级英语作文outline

六级英语作文outline

六级英语作文outlineIn the era of globalization, the importance of English proficiency has become paramount. The College English Test (CET) Level 6 is a significant benchmark for assessing the language skills of university students.The CET-6 exam is designed to evaluate the comprehensive English language abilities, including listening, reading, writing, and translation. It is not only a test of knowledge but also a practical application of the language in various contexts.One of the critical components of the CET-6 is the essay writing section. This section requires students to express their thoughts coherently and convincingly, often on topics related to contemporary issues or societal concerns.To excel in the essay section, students must develop a clear outline before they begin writing. This includes an introduction that presents the topic, a body with well-structured arguments, and a conclusion that summarizes the main points.Moreover, the use of a wide range of vocabulary and complex sentence structures is essential to demonstrate advanced language proficiency. However, it is equally important to ensure that the essay is free of grammatical errors and maintains a logical flow.In addition to the written expression, the ability tothink critically and analyze different perspectives iscrucial. This skill is often tested through the essay prompt, which may present a debate or a problem that requires a thoughtful response.Lastly, time management is a key factor in the CET-6 exam. Students must allocate sufficient time to each section, ensuring that they have enough time to complete the essaywith a well-thought-out argument and a polished conclusion.Preparing for the CET-6 requires a strategic approach, including regular practice, vocabulary expansion, and understanding of the exam format. With dedication and theright preparation, students can achieve their desired score and demonstrate their mastery of the English language.。

自动化电气设计的流程

自动化电气设计的流程

自动化电气设计的流程The process of automation electrical design is a complex and intricate one that requires a thorough understanding of electrical principles and a keen eye for detail.自动化电气设计的流程是一个复杂而复杂的过程,需要对电气原理有深刻的理解和对细节有敏锐的洞察力。

First and foremost, the design process begins with gathering the necessary requirements and specifications from the client. This involves extensive communication and collaboration to ensure that all the client's needs and expectations are fully understood and met. 首先,设计过程始于从客户处收集必要的需求和规格。

这涉及到广泛的沟通和合作,以确保客户的所有需求和期望都得到充分理解和满足。

Once all the requirements have been gathered, the next step is to create a conceptual design that outlines the overall layout and functionality of the automation electrical system. This phase involves brainstorming and ideation to come up with innovative and efficient solutions that meet the client's specifications.一旦收集到所有的需求,下一步就是创建一个概念设计,概述自动化电气系统的整体布局和功能。

自动化电气设计的流程

自动化电气设计的流程

自动化电气设计的流程英文回答:The process of automation electrical design involves several steps that are essential for the successful implementation of a project. It starts with gathering requirements and understanding the scope of the project. This includes identifying the specific needs of the client and any constraints or limitations that need to be considered. For example, if the project involves designing an automated production line for a manufacturing facility, the requirements may include the desired production capacity, the types of products to be manufactured, and any specific safety regulations that need to be followed.Once the requirements are clear, the next step is to develop a conceptual design. This involves creating a high-level plan that outlines the overall system architecture and the major components involved. For instance, in the case of the automated production line, the conceptualdesign may include the layout of the production line, the selection of robotic arms or conveyor belts, and the integration of sensors and control systems.After the conceptual design is approved, the detailed design phase begins. This is where the specific components and subsystems are designed in detail. For example, the electrical circuits, control panels, and communication networks are designed and specified. The design should ensure that all the components work together seamlessly and meet the requirements identified in the earlier stages.Once the detailed design is completed, the next step is to procure the necessary components and equipment. This involves selecting vendors, obtaining quotes, and making purchasing decisions. It is important to ensure that the selected components are of high quality and meet the required specifications. For example, if the project requires programmable logic controllers (PLCs), the design team needs to select a reliable supplier and ensure that the PLCs meet the required performance and functionality.After the procurement phase, the implementation phase begins. This involves the physical installation of the electrical components and the integration of the control systems. The installation should be carried out according to the design specifications and any applicable safety regulations. For example, the electrical wiring should be properly installed and grounded to prevent electrical hazards.Once the installation is completed, the system undergoes testing and commissioning. This involves checking the functionality of each component and subsystem, as well as the overall system performance. Any issues or deficiencies identified during the testing phase are addressed and resolved. For example, if a sensor is not providing accurate readings, it may need to be calibrated or replaced.Finally, after successful testing and commissioning, the system is ready for operation. The client is provided with training on how to operate and maintain the system. Ongoing support and maintenance are also provided to ensurethe system operates smoothly and efficiently.中文回答:自动化电气设计的流程包括几个关键步骤,对于项目的成功实施至关重要。

认识化工工艺流程的步骤

认识化工工艺流程的步骤

认识化工工艺流程的步骤English: The steps involved in understanding a chemical engineering process are as follows:1. Define the Objective: The first step is to clearly define the objective of the chemical process. This could include determining the desired product or outcome, identifying the scale of production, and setting performance criteria.2. Gather Information: The next step is to collect all relevant information related to the process. This could involve conducting literature reviews, consulting experts, and gathering data on raw materials, equipment, and safety requirements.3. Process Design: Once the information is gathered, the process design phase begins. This involves developing a conceptual design that outlines the overall process flow, chemical reactions, and unit operations required to achieve the desired outcome. Process simulation software may be used to model and optimize the design.4. Equipment Selection: After the process design is finalized, the next step is to select the appropriate equipment for each unit operation. This includes considering factors such as the desired capacity, reliability, energy efficiency, and cost. Equipment vendors and specifications are evaluated and selected accordingly.5. Process Control: Process control is an essential step in ensuring the safe and efficient operation of the chemical process. This involves designing and implementing control systems that monitor and regulate process variables such as temperature, pressure, flow rate, and composition. Advanced control techniques are employed to optimize process performance.6. Safety Analysis: Safety is paramount in chemical engineering. A thorough safety analysis is conducted to identify potential hazards and risks associated with the process. This includes conducting hazard and operability studies (HAZOP), analyzing process safety data, and designing safety measures such as emergency shutdown systems, relief systems, and ventilation.7. Pilot Plant Testing: Before full-scale production, pilot plant testing is often conducted to validate the process design and make necessary adjustments. This involves building a small-scale version of the process and running experiments to evaluate its performance and identify any operational challenges.8. Scale-up and Optimization: Once the process design is validated, it can be scaled up for commercial production. Optimization techniques are employed to enhance process performance, reduce waste, and improve efficiency. This may involve conducting industrial trials and implementing process improvements based on the data obtained.中文翻译: 认识化工工艺流程的步骤如下:1. 目标定义:首先要明确化学过程的目标。

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Chapter TwelveTHE ADVENT OF NETWAR*John Arquilla and David RonfeldtCONCEPTUAL OUTLINESIn our view, the information-age conflict spectrum looks like this: What we term “cyberwar” will be an ever-more-important entry at the military end, where the language is normally about high-intensity conflict (HIC) and middle-range conflict (MRC). “Netwar” will figure increasingly at the societal end, where the language is normally about low-intensity conflict (LIC) and operations other than war (OOTW—a broader concept than LIC that includes peacekeeping and humanitarian relief operations). Whereas cyberwar will usually see formal military forces pitted against each other, netwar is more likely to involve nonstate, paramilitary, and other irregular forces. Both concepts are consistent with the views of analysts like Van Creveld (1991) who believe that a transformation of war is under way, leading to increased “irregularization.”The terms above reflect two assumptions (or propositions) about the information revolution. One is that conflicts will increasingly de-pend on, and revolve around, information and communications—“cyber”-matters, broadly defined. Indeed, both cyberwar and netwar are modes of conflict that are largely about “knowledge”—about who knows what, when, where, and why, and about how secure a society, *John Arquilla and David Ronfeldt, The Advent of Netwar, MR-789-OSD, 1996, pp. 3–16, 19–24, and 81–82. Copyright 1996 RAND. Used by permission. Some figures and text were omitted for this version.275276In Athena’s Camp: Preparing for Conflict in the Information Agemilitary, or other actor is regarding its knowledge of itself and its adversaries.The other assumption is that the information revolution favors and strengthens network forms of organization, while making life difficult for hierarchical forms. This implies that conflicts will increasingly be fought by “networks” more than by “hierarchies.” Thus, whoever masters the network form should gain major advantages in the new era.Both assumptions permeate this analysis and are discussed further as it proceeds. A point to emphasize here is that these assumptions affect the entire conflict spectrum. They mean that major alterations are looming in the nature of our adversaries, in the threats they pose, and for the defense measures the United States should consider. Information-age threats are likely to be more diffuse, nonlinear, and multidimensional than industrial-age threats. Cyberwars and net-wars may even be mounted at the same time, in mixes that pose un-comfortable societal dilemmas. All this will place the U.S. military and society under increasing pressure to develop new concepts for organization, doctrine, strategy, tactics, and technology.At present, the U.S. military is the world’s leader with regard to thinking, planning, and preparing for cyberwar. The United States is the only country with an array of advanced technologies (e.g., for command, control, communications, and intelligence (C3I), surveil-lance, stealth, etc.) to make cyberwar an attractive and feasible op-tion. But potential U.S. adversaries have the lead with regard to net-war. Here, the U.S. emphasis must be on defensive measures. This continues a long trend in which the United States has been prepared for waging major wars, while our adversaries may instead wage guerrilla warfare, terrorism, and other irregular modes of conflict. This may be partly the result of displacement—some adversaries, seeing that they should avoid or could not win at regular warfare, have opted for irregular modes, which the U.S. military may then try to treat as “lesser-included cases.” Such displacement may occur again with netwar. But, hopefully, netwar will not be perceived as a “lesser-included case” of information-age conflict, for it is not. Instead of using terms like cyberwar or netwar, many analysts have been treating such points under the rubric of the “revolution in mili-The Advent of Netwar277 tary affairs” (RMA). Yet, this very general concept is still mainly about the information revolution and its effects and implications. It led early exponents to view technology innovation as the most im-portant dimension of the RMA. But other, recent exponents have come to accept that the RMA is equally if not mainly about organiza-tional and doctrinal innovation—a view we have emphasized since beginning our efforts to conceptualize cyberwar and netwar. Even so, discussions about the RMA tend to focus on HICs and MRCs that revolve around regular, albeit much-modified military forces. Expo-nents of the RMA have had less to say about the netwar end of the spectrum (see Arquilla and Ronfeldt, 1995).The term “netwar” denotes an emerging mode of conflict (and crime) at societal levels, involving measures short of war, in which the pro-tagonists use—indeed, depend on using—network forms of organi-zation, doctrine, strategy, and communication. These protagonists generally consist of dispersed, often small groups who agree to communicate, coordinate, and act in an internetted manner, often without a precise central leadership or headquarters. Decisionmak-ing may be deliberately decentralized and dispersed.Thus netwar differs from traditional modes of conflict and crime in which the protagonists prefer to use hierarchical organizations, doc-trines, and strategies, as in past efforts to foster large, centralized mass movements along Leninist lines. In short, netwar is about Hamas more than the PLO, Mexico’s Zapatistas more than Cuba’s Fidelistas, the Christian Identity Movement more than the Ku Klux Klan, the Asian Triads more than the Sicilian Mafia, and Chicago’s Gangsta Disciples more than the Al Capone Gang.Actors across the spectrum of social conflict and crime are evolving in the direction of netwar. This includes familiar adversaries who are modifying their structures and strategies to gain advantage from the rise of network designs: e.g., transnational terrorist groups, black-market proliferators of weapons of mass destruction (WMD), drug and other criminal syndicates, fundamentalist and ethnonationalist movements, intellectual-property pirates, and immigration and refugee smugglers. Some urban gangs, rural militia organizations, and militant single-issue groups in the United States are also devel-oping netwar-like attributes.278In Athena’s Camp: Preparing for Conflict in the Information AgeBut that is not all: The netwar spectrum may increasingly include a new generation of revolutionaries and activists who espouse post-industrial, information-age ideologies that are just now taking shape. In some cases, identities and loyalties may shift from the nation-state to the transnational level of “global civil society.” New kinds of actors—e.g., anarchistic and nihilistic leagues of computer-oriented “cyboteurs”—are also beginning to arise who may partake of netwar. Many if not most netwar actors will be nonstate and even stateless. Some may be agents of a state, but others may turn states into their agents. Odd hybrids and symbioses are likely. Moreover, a netwar actor may be both subnational and transnational in scope.Many netwar actors may be antagonistic to U.S. interests, such as WMD proliferators. But others, like some transnational social ac-tivists, may not. In some cases, a netwar actor may benefit U.S. in-terests. Many variations are possible. Thus the advent of netwar may prove mainly a bane but at times a boon for U.S. policy.The full spectrum of netwar proponents may seem broad and odd at first glance. Some actors could be fit into standard notions of LIC, OOTW, and crime. But not all fit easily into prevailing categories. And trying to make them fit risks overlooking the underlying pattern that cuts across all these variations: the use of network forms of or-ganization, doctrine, strategy, and communication attuned to the in-formation age.Despite the modernity of the concept, historical instances of netwar-like actors abound. Examples mentioned in this study include: ir-regular warfare in North America during the French and Indian Wars, and the American Revolution in the eighteenth century; the warfare waged by indigenous Spanish guerrillas against the Napoleonic occupation in the early nineteenth century; as well as pi-rates and other criminals and terrorists that have long operated on the fringes of empires and nation-states. Yet, in contrast to the cur-rently emerging examples of netwar, these early cases were forced, largely by circumstance, into netwar-like designs; these were not de-signs that were determined by explicit doctrine, or that could be sustained for long, or over great distances.We think a new term is needed to focus attention on the fact that network-based conflict and crime are increasing. No current termsThe Advent of Netwar279 about LIC and OOTW fit this purpose. Moreover, the term “information warfare” (IW) and its derivatives (e.g., “infowar,”“information warriors”) are both too broad and too narrow to be appropriate. On the one hand, IW is used sometimes to refer to the entire spectrum of information-age conflict; on the other hand, it is increasingly associated with narrow technical issues of cyberspace vulnerability, security, and safety.The term “netwar” connotes that the information revolution is as much about organizational design as about technological prowess, and that this revolution favors whoever masters the network form. The term amounts, then, to both a tool and a prediction:•Tool, because it illuminates—and instructs the eye to focus on—a new but elusive phenomenon requiring new concepts andmethodologies to understand: the rise of network forms of or-ganization.•Prediction, because it heralds the prospect that networked adver-saries will probably predominate the spectrum of conflict and crime early next century.The term may strike some readers as fanciful, and a better term may yet be found. But meanwhile, in addition to providing a basis for this analysis, it is already being adopted by protagonists of varied politi-cal creeds who believe it resonates with their doctrines and objec-tives. For example, some extreme rightist militia members in the United States have been heard to declare netwar (or netkrieg) against the U.S. government, and have organized a virtual netwaffe. Also, center-left activists operating in Mexico sometimes refer to them-selves now as “netwarriors.”The phenomenon of netwar is not entirely new—there are examples from decades past—but it is growing and spreading to an extent that will make it quantitatively and qualitatively different from what has gone before. It is becoming both more plentiful and more powerful, enough to compel a rethinking of the overall nature of potential threats, and of the roles and missions for responding to them.The phenomenon of netwar is still emerging; its organizational, doc-trinal, and other dimensions are yet to be fully defined and devel-oped. But the outlines are detectable.280In Athena’s Camp: Preparing for Conflict in the Information AgeAn archetypal netwar actor consists of a web (or network) of dis-persed, interconnected “nodes” (or activity centers)—this is its key defining characteristic. It may resemble the bounded “all-channel”type of network. These nodes may be individuals, groups, formal or informal organizations, or parts of groups or organizations. The nodes may be large or small in size, tightly or loosely coupled, and inclusive or exclusive in membership. They may be segmentary or specialized; that is, they may look quite alike and engage in similar activities, or they may undertake a division of labor based on specialization. The boundaries of the network may be sharply defined or blurred in relation to the outside environment.The organizational structure is quite flat. There is no single central leader or commander; the network as a whole (but not necessarily each node) has little to no hierarchy. There may be multiple leaders. Decisionmaking and operations are decentralized and depend on consultative consensus-building that allows for local initiative and autonomy. The design is both acephalous (headless) and poly-cephalous (Hydra-headed)—it has no precise heart or head, al-though not all nodes may be “created equal.” In other words, the design is a heterarchy, but also what might be termed a “panarchy”(see below).The structure may be cellular for purposes of secrecy or substitutability (or interoperability). But the presence of “cells” does not necessarily mean a network exists, or that it is of the “all-channel” design. A hierarchy can also be cellular, as has been the case with some subversive organizations. Or the cells may be arranged in a “chain” or “star” rather than an all-channel shape.The capacity of this nonhierarchical design for effective performance over time may depend on a powerful doctrine or ideology, or at least a strong set of common interests and objectives, that spans all nodes, and to which the members subscribe in a deep way. Such a doctrine can enable them to be “all of one mind” even if they are dispersed and devoted to different tasks. It can provide an ideational, strategic, and operational centrality that allows for tactical decentralization. It can set boundaries and provide guidelines for decisions and actions so that they do not have to resort to a hierarchy—“they know what they have to do.” That is why a nouveau term like panarchy may be more accurate than heterarchy.The Advent of Netwar281 The design depends on having a capacity—better yet, a well-devel-oped infrastructure—for the dense communication of functional in-formation. This does not mean that all nodes have to be in constant communication; that may not make sense for a secretive actor. But when communication is needed, information can be disseminated promptly and thoroughly, both within the network and to outside audiences.In many respects, this archetypal netwar design resembles a “segmented, polycentric, ideologically integrated network” (SPIN). The SPIN concept, identified by anthropologist Luther Gerlach and sociologist Virginia Hine, stems from an analysis of U.S. social movements in the 1960s and 1970s:By segmentary I mean that it is cellular, composed of many differentgroups. . . . By polycentric I mean that it has many different leadersor centers of direction. . . . By networked I mean that the segmentsand the leaders are integrated into reticulated systems or networksthrough various structural, personal, and ideological ties. Networksare usually unbounded and expanding. . . . This acronym [SPIN]helps us picture this organization as a fluid, dynamic, expandingone, spinning out into mainstream society (Gerlach, 1987, p. 115,based on Gerlach and Hine, 1970).The SPIN concept is a precursor of the netwar concept. Indeed, Gerlach and Hine anticipated two decades ago many points about network forms of organization that are just now coming into vogue. This distinctive design has unique strengths for both offense and defense. On the offense, netwar is adaptable, flexible, and versatile vis-à-vis opportunities and challenges that arise. This may be par-ticularly the case where there is functional differentiation and spe-cialization among the network’s nodes. These node-level character-istics, rather than implying a need for rigid command and control of group actions, combine with interoperability to allow for unusual operational flexibility, as well as for a rapidity of maneuver and an economy of force.When all, or almost all, network elements can perform either special-ized or general missions, the mobilization process can unfold rapidly. This capability alone should improve offensive penetration since the defense’s potential warning time may be truncated. The282In Athena’s Camp: Preparing for Conflict in the Information Agecapacity for a “stealthy approach” of the attacking force suggests the possibility that, in netwar, attacks will come in “swarms” rather than in more traditional “waves.”1Further, during the course of a netwar offensive, networked forces will, more than likely, be able to maneuver well within the decision-making cycle of more hierarchical opponents. This suggests that other networked formations can reinforce the original assault, swelling it; or they can launch swarm attacks upon other targets, pre-senting the defense with dilemmas about how best to deploy their own available forces.In terms of their defensive potential, networks tend to be redundant and diverse, making them robust and quite resilient in the face of ad-versity. Because of their capacity for interoperability, and their ab-sence of central command and control structures, such network de-signs can be difficult to crack and defeat as a whole. In particular, they defy counterleadership targeting (i.e., “decapitation”). This severely limits those attacking the network—generally, they can find and confront only portions of it. The rest of the network can con-tinue offensive operations, or swarm to the aid of the threatened nodes, rather like antibodies. Finally, the deniability built into a network affords the possibility that it may simply absorb a number of attacks on distributed nodes, leading the attacker to believe the net-work has been harmed when, in fact, it remains operationally viable and may actually find new opportunities for tactical surprise.The difficulty of dealing with netwar actors is deepened when the line between offense and defense is “blurred”—or “blended.” When blurring is the case, it may be difficult to distinguish between attack-ing and defending actions; they may be observationally equivalent. Swarming, for example, may be employed to attack some adversary, or to form an antibody-like defense against incursions into an area that formed part of the network’s defensive zone against a hierarchi-cal actor. A historical example is the swarming Indian attack on General George Braddock’s forces during the French and Indian Wars—an instance of a network of interconnected American Indian tribes (Gipson, 1946) triumphing over an army designed around a rigid, traditional command hierarchy. While the British saw the In-dian attack as presaging a major offensive against the seaboard colonies, it was but an effort to deter incursions into the French-heldThe Advent of Netwar283 Ohio River Valley. The French and their Indian allies, outnumbered by the colonists and British imperial forces, took advantage of the disarray caused by their attack to engage in other pinprick raids. This reinforced the British view of an offensive in the making, com-pelling them to attend primarily to defensive preparations. This lengthened the time it took for the British to muster forces sufficient for the defense of the colonies and the taking of Canada (Parkman, 1884). Today, as discussed later, the Zapatista struggle in Mexico demonstrates anew the blurring of offense and defense.The blending of offense and defense will often mix the strategic and tactical levels of operations. An example is the netwar-like guerrilla campaign in Spain during the Napoleonic Wars. Much of the time, the guerrillas, and the small British expeditionary force, pursued a strategic offensive aimed at throwing the French out of Iberia. How-ever, more often than not, pitched battles were fought on the defen-sive, tactically. Similarly, where the guerrillas were on the defensive strategically, they generally took the tactical offensive. The war of the mujahideen in Afghanistan provides an excellent modern example. This blurring of offense and defense reflects a broader feature of netwar: It tends to defy and cut across standard spatial boundaries, jurisdictions, and distinctions between state and society, public and private, war and crime, civilian and military, police and military, and legal and illegal. A netwar actor is likely to operate in the cracks and gray areas of a society.A netwar actor may also confound temporal expectations by opting for an unusual duration and pace of conflict. Thus, it may not be clear when a netwar has started, or how and when it ends. A netwar actor may engage in long cycles of quietly watching and waiting, and then swell and swarm rapidly into action.Moreover, sometimes it may not be clear who the protagonists are. Their identities may be so blurred, and so tangled with other actors’identities, that it is difficult to ascertain who, if anyone in particular, lies behind a netwar. This may be particularly the case where a net-work configured for netwar is transnational and able to maneuver adroitly and quietly across increasingly permeable nation-state bor-ders.284In Athena’s Camp: Preparing for Conflict in the Information AgeThis means, as Szafranski (1994, 1995) illuminates in discussing “neo-cortical warfare,” that the challenge can be “epistemological”: a netwar actor may aim to confound people’s most fundamental be-liefs about the nature of their society, culture, and government, partly to strike fear but perhaps mainly to disorient people so that they no longer presume to think or act in “normal” terms. Examples can be found in the behavior of some terrorists and crimi-nals. Terrorists, notably those using internetted, less hierarchical structures (like the “leaderless” Hamas), have been moving away from the use of violence for specific, often state-related purposes, to its use for more generalized purposes. There has been less hostage-taking accompanied by explicit demands, and more terrorist activity that begins with a destructive act aimed at having broad but vague effects. Thus, for example, Islamic fundamentalist Sheik Rahman sought to blow up the World Trade Center with the intent of chang-ing “American foreign policy” toward the Middle East. The current rash of domestic terrorism in the United States—e.g., the bombing in Oklahoma, and the derailment in Arizona—involves violent actions and vague or no demands. This reflects a rationality that disdains pursuing a “proportionate” relationship between ends and means, seeking instead to unhinge a society’s perceptions.Criminals also use methods tantamount to epistemological warfare when they insert themselves deeply into the fabric of their societies, e.g., by wrapping themselves in nationalism, acting like local “Robin Hoods,” and/or seeking to influence, if not control, their govern-ments and their foreign and domestic policies. Examples abound, in Colombia, Italy, Mexico, and Russia, where symbiotic ties exist be-tween criminal and governmental organizations.The more epistemological the challenge, the more it may be con-founding from an organizational standpoint. Whose responsibility is it to respond? Whose roles and missions are at stake? Is it a military, police, intelligence, or political matter? The roles and missions of de-fenders are not easy to define, and this may make both deterrence and defense quite problematic.Netwar adds to the challenges facing the “nation-state.” Its tradi-tional presumptions of sovereignty and authority are linked to a bu-reaucratic rationality in which issues and problems are categorizedThe Advent of Netwar285 so that specific offices can be charged with taking care of specific problems. In netwar, things are rarely so clear.It is not easy to make a multiorganizational network function well—a hierarchy is easier to run. A key reason for this is that network forms of organization generally require constant dense communications. The information revolution dramatically enhances the viability of the network form (as discussed below). Thus, the new technologies strengthen the prospects and capabilities for actors to take a netwar approach to conflict and crime.Indeed, new technologies make possible a rather “pure” variety of netwar in which all strategy and tactics—for example, disinformation campaigns and disruptive computer hacking—occur on “the Net”and in the media. But—and this should always be kept in mind—netwar is not just about the new technologies.The latest telecommunications systems—including advanced tele-phone, fax, electronic mail (e-mail), and computerized billboard and conferencing systems—all contribute to netwar, and their roles in re-cent conflicts are often remarked about. But older technologies, like short-wave radio and cassette tape, are also important for some ac-tors. Computerized desktop publishing, a fairly recent development, enhances the outreach of some actors, but access to traditional print and electronic media remains crucial too, depending on the actor and the audience. Meanwhile, old-style face-to-face meetings, hu-man couriers, and regular mail have not ceased to play roles. If a ter-rorist or criminal sent a coded fax, this would likely be an example of netwar-related behavior, but if the same actor paid off a journalist for an article critical of some U.S. policy, this may also be an example. Such technologies enhance the capabilities of a network’s members not only to coordinate with each other, but also to collect intelligence on the external environment and on their opponents, and to broad-cast or otherwise transmit messages to target audiences. The vari-eties of netwar actors have used all kinds of old and new, high-tech and low-tech, open and secure, and public and partisan media; in-deed, many netwar actors are likely to use a layered mix. The tech-nologies can be used to wage a very public netwar campaign (as in Mexico) or to foster a secretive “virtual conspiracy” (as may be an aim of some extreme rightists in the United States).2286In Athena’s Camp: Preparing for Conflict in the Information AgeTHE RISE OF NETWORK FORMS OF ORGANIZATION Anthropologists and sociologists have studied social networks for many decades. According to the most established school of thinking, basically all social organizations—families, groups, elites, institu-tions, markets, etc.—are embedded in networks of social relations (Granovetter, 1985; Nohria and Eccles, 1992). For this school, the network is more the “mother of all forms” than a specific type of complex organization.Prior to the 1990s, scholarly writings occasionally appeared that treated the network as a specific, deliberate, even formal organiza-tional design (e.g., Heclo, 1978; Perrow, 1979; Chisholm, 1989; also Gerlach and Hine, 1970; Gerlach, 1987). But such efforts were more the exception than the rule, and some occurred on the margins of the social sciences, including the illuminating work by Gerlach and Hine on SPINs that we quoted earlier.Lately, and largely as a result of research by economic sociologists who study innovative corporate designs (notably Powell, 1990; and Powell and Smith-Doerr, 1994), a new school of thinking about net-works is beginning to cohere. It looks beyond informal social net-works to see that formal organizational networks are gaining strength as a distinct design—distinct in particular from the “hierarchies and markets” that organizational economists and economic sociologists normally emphasize:[T]he familiar market-hierarchy continuum does not do justice tothe notion of network forms of organization. . . . [S]uch an ar-rangement is neither a market transaction nor a hierarchical gover-nance structure, but a separate, different mode of exchange, onewith its own logic, a network (Powell, 1990, pp. 296, 301).This new school of analysis and the numerous examples and case studies it affords serve to validate our point that network forms of or-ganization are on the rise and becoming more viable than ever. But the new school is mostly about economic organization. And clear, precise definitions are still lacking as to what is and is not a network. Distinctions may be made among what are termed “chain,” “star” or “hub,” and “all-channel” types of networks. We focus on the all-channel type, in which all members are connected to each other and。

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