lesson05
Lesson 05 Leadership 旅游管理专业英语PPT课件
Responsibilities
VISION
The faculty of seeing: eye, eyesight, seeing, sight. Archaic light1. See see/not see.
Unusual or creative discernment or perception: farsightedness, foresight, prescience. See foresight.
The leader with referent power has personal characteristics that appeal to others;
The leader who has expert power has certain expertise or knowledge;
first analyze the situation and then
decide what to do.
Look before youTlehade. behavioral approach
The situational approach.
THE TRAIT APPROACH
Is the oldest leadership perspective and was dominant for several decades. This approach seems logical for studying leadership.
the soundness,
Tpherefeyctaiorne, gorifted strategists who seize oinptepgorirttyuonf;itsipeosilothers overlook, but they are also passionately concerned with details — all the small, fundamental realities that can make or mar the grandest of plans.
新概念英语第一册第五课教案+练习
Italian 意大利的; 意大利的;意大利人
如何询问国籍呢?
• • • • • What nationality is she /he ? She’s French/Chinese/German/Korean He’s …. What is your nationality ? I am American / Italian / English .
Mr. 先生
Mr.用于男士的姓之前,不能单独使用, 如课文中的 Mr.Blake;而sir 一般单独使 用,是对长者、上司或男顾客的尊称,如: Sorry, sir. 对不起,先生。
This is Miss是索菲娅·杜邦小姐。” This is+姓名是将某人介绍给他人时常 用的句式。 Miss 小姐 一般用于指未婚女子,不过有时在不知 道对方是否已婚时也可使用
英语国家中人的姓名通常由3部分组 成,即:名+中间名+姓。 在一般情况下,不用中间名。在熟悉 的人中间,以名相称,而在正式的场 合中常用 Mr.(先生),Mrs.(太 太),Miss(小姐)或Ms.(女士) 这些称呼再加上姓。
Sophie is a new student .
She is French
The end !
Lesson 5 Nice to meet you !
一. Listen to the tape ,then answer this question “Is Chang-woo Chinese?” ?
二. New words and expressions 1)About nationality 关于国籍 2)About cars关于汽车品牌 关于汽车品牌
布莱克先生:早上好。 布莱克先生:早上好。 早上好,布莱克先生。 学 生: 早上好,布莱克先生。 布莱克先生:这位是索菲娅.杜邦小姐 杜邦小姐。 布莱克先生:这位是索菲娅 杜邦小姐。 索菲娅是个新学生。她是法国人。 索菲娅是个新学生。她是法国人。 布莱克先生:索菲娅,这位是汉斯。他是德国人。 布莱克先生:索菲娅,这位是汉斯。他是德国人。 很高兴见到你。 汉 斯: 很高兴见到你。 布莱克先生:这位是直子。她是日本人。 布莱克先生:这位是直子。她是日本人。 很高兴见到你。 直 子: 很高兴见到你。 布莱克先生:这位是昌宇。他是韩国人。 布莱克先生:这位是昌宇。他是韩国人。 很高兴见到你。 昌 宇: 很高兴见到你。 布莱克先生:这位是鲁明。他是中国人。 布莱克先生:这位是鲁明。他是中国人。 很高兴见到你。 鲁 明: 很高兴见到你。 布莱克先生:这位是晓惠。她也是中国人。 布莱克先生:这位是晓惠。她也是中国人。 很高兴见到你。 晓 惠 :很高兴见到你。
新编外贸英语口语教程Lesson 05 Reserving Rooms
B: Miss Huang Mei reserved a single room with a bath from Lotus Hotel.
Ⅱ. Complete the following dialogues:
Oral Drills
Ⅰ. Comprehension of the Situational Conversation:
The teacher assigns (Student)A to ask (Student)B a question according to Oral Drill Ⅰ e.g.
是的,不过,如果可能的话,我们宁愿要一个带客厅 的套间,而不要双人房。
B: No problem, Mr. Bright. We do have a very quiet suite available.
没问题,布特先生,我们可给你们一个十分安静的套 间。
新编外贸英语口语教程Lesson 05 Reserving Rooms
8. settle [5set(E)l] v. 处理,支付,结算 9. lobby [5lCbi] n. (饭店)前厅,大堂 10. beforehand [bi5fC:hAnd] ad. 预先,事先 11. fortnight [5fC:tnait] n. 两周,十四日 12. deluxe [di5lUks] a. (法)豪华型的,上等的,精装的 13. facility [fE5siliti] pl. 设备,工具,方便 14. sauna [5sC:nE] n. 桑拿浴,蒸气浴 15. discount [5diskaUnt] n. 折扣 16. vacancy [5veikEnsi] n. 空房,空间
Lesson-05解读
2 Structural Material
Unless test or experience indicates that a
particular water source is satisfactory, water should be free from acids, alkalis, oils, and organic impurities. Inert filler material ( usually sand and stone or gravel) make up between 60 and 80 percent of the volume of normal concrete.
2 Structural Material
Recommended and typical mixes of concrete for
various type or classes of work will determine how to proportion concrete mix. Factors affecting this include: (1) water to cement ratio,(2) type and size of aggregate, (3) air of nonair-entrained concrete, and (4) slump of the mix.
2 Structural Material
Strength, durability and water tightness are
usually specified by the structural –design engineer, but a tentative mix proportion can be determined from knowledge of a prior job. As water is added, the plasticity and the fluidity of the mix increase (i.e., its workability improves), but the strength decreases because of the larger volume of voids created by the free water.
大学英语写作 Lesson 05
• Opponents also argue that the purpose of marriage is procreation. Since homosexuals are unable to procreate they should not be allowed to marry.
• Similarly, opponents argue that homosexuals are not fit to be parents and that a traditional heterosexual household is the best in which to raise children.
• Gay marriage could potentially lead down a "slippery slope" giving people in other nontraditional relationships the right to marry.
For
Against
• Marriage is redefined • People should not
acceptable to
freaks of Nature and our
discriminate against duty, to serve God well,
them.
is to eliminate them.
For
Against
• Legalizing gay
• Marriage should
• In a homosexual relationship gender roles either do not exist or are unclear. The confusion of traditional gender roles gives the impression that the sexes do not need each other thus threatening the institution of marriage altogether.
新概念英语第一册第五课ppt课件
Chinese
18
Fill in the blanks 2
Good
Good Nice to meet you. MR. BLAKE: ____Tmhoisrning.
STUDENTS: ____morning, Mr.nBelwake.
MR. BLAKE: ___is Miss Sophie Dupont. Sophie is a ___ studetnhtis. She is French.
Q1: What’s the name of the new student? Q2: How do we greet strangers? Q3: How many students in the class?Who
are they?
13
Phrases
Nice to meet you. Nice to meet you, too .
9
New words
student nice meet too
/5stju:dEnt/ /naIs/ /mi:t/ /tu:/
n.学生 adj.愉快的 v.遇见 adv.也
10
French German Japanese Chinese Korean
New words /frentF/
/5dVE:mEn/ /dVAp5ni:z/ /7tFaI5ni:z/ /kE5rIEn/
MR. BLAKE: This is ____ Sophie Dupont. Sophie is a newG_e_r_m_a_n_.She is ______. MR. BLAKE: Sophie, this is Hans. He is ______.
HANS:
Nice to meet you.
《旅游管理专业英语》(第二版) 讲义 Lesson05 Definition of power
Definition of power (sociology)Sociologists usually define power as the ability to impose one's will on others, even if those others resist in some way."By power is meant that opportunity existing within a social relationship which permitsone to carry out one's own will even against resistance and regardless of the basis onwhich this opportunity rests."Max Weber, Basic Concepts in SociologyThe imposition need not involve coercion (force or threat of force). Thus "power" in the sociological sense subsumes both physical power and political power, including many of the types listed at power. In some ways it more closely resembles what everyday English-speakers call "influence".More generally, one could define "power" as the more or less unilateral ability (real or perceived) or potential to bring about significant change, usua lly in people’s lives, through the actions of oneself or of others.The exercise of power seems endemic to humans as social and gregarious beings.Analysis and operation of powerPower manifests itself in a relational manner: one cannot meaningfully say (pace advocates of empowerment) that a particular social actor "has power" without also specifying the other parties to the social relationship.Power almost always operates reciprocally, but usually not equally reciprocally. To control others, one must have control over things that they desire or need, but one can rarely exercise that control without a measure of reverse control - larger, smaller or equal - also existing. For example, an employer usually wields considerable power over his workers because he has control over wages, working conditions, hiring and firing. The workers, however, hold some reciprocal power: they may leave, work more or less diligently, group together to form a union, and so on.Because power operates both relationally and reciprocally, sociologists speak of the balance of power between parties to a relationship: all parties to all relationships have some power: the sociological examination of power concerns itself with discovering and describing the relative strengths: equal or unequal, stable or subject to periodic change. Sociologists usually analyse relationships in which the parties have relatively equal or nearly equal power in terms of constraint rather than of power. Thus 'power' has a connotation of unilateralism. If this were not so, then all relationships could be described in terms of 'power', and its meaning would be lost.Even in structuralist social theory, power appears as a process, an aspect to an ongoing social relationship, not as a fixed part of social structure.One can sometimes distinguish primary power: the direct and personal use of force for coercion; and secondary power, which may involve the threat of force or social constraint, most likely involving third-party exercisers of delegated power.Types and sources of powerPower may be held through:•Delegated authority (for example in the democratic process)•Personal or group charisma•Ascribed power (acting on perceived or assumed abilities, whether these bear testing or not)•Expertise (Ability, Skills) (the power of medicine to bring about health, another famous example would be "in the land of the blind, the one-eyed man is king) •Persuasion•Knowledge (granted or withheld, shared or kept secret)•Money (financial influence, control of labour, control through ownership, etc)•Force (violence, military might, coercion).•Moral suasion•Application of non-violence•Operation of group dynamics•Social influence of tradition (compare ascribed power)Theories of powerThe thought of Friedrich Nietzsche underlies much 20th century analysis of power. Nietzsche disseminated ideas on the "will to power," which he saw as the domination of other humans as much as the exercise of control over one's environment.Some schools of psychology, notably that associated with Alfred Adler, place power dynamics at the core of their theory (where orthodox Freudians might place sexuality).MarxismIn the Marxist tradition, Antonio Gramsci elaborated the role of cultural hegemony in ideology as a means of bolstering the power of capitalism and of the nation-state. Gramsci saw power as something exercised in a direct, overt manner, and the power of the bourgeois as keeping the proletariat in their place.FeminismFeminist analysis of the patriarchy often concentrates on issues of power: note the "Rape Mantra": Rape is about power, not sex.Some feminists distinguish "power-over" (influence on other people) from "power-to" (ability to perform).FoucaultOne of the broader modern views of the importance of power in human activity comes from the work of Michel Foucault, who has said, "Power is everywhere...because it comes from everywhere." (Aldrich, Robert and Wotherspoon, Gary (Eds.), 2001)Foucault's works analyze the link between power and knowledge. He outlines a form of covert power that works through people rather than only on them. Foucault claims belief systems gain momentum (and hence power) as more people come to accept the particular views associated with that belief system as common knowledge. Such belief systems define their figures of authority, such as medical doctors or priests in a church. Within such a belief system -- or discourse -- ideas crystallize as to what is right and what is wrong, what is normal and what is deviant. Within a particular belief system certain views, thoughts or actions become unthinkable. These ideas, being considered undeniable "truths", come to define a particular way of seeing the world, and the particular way of life associated with such "truths" becomes normalized. This subtle form of power lacks rigidity, and other discourses can contest it. Indeed, power itself lacks any concrete form, occurring as a locus of struggle. Resistance, through defiance, defines power and hence becomes possible through power. Without resistance, power is absent. This view 'grants' individuality to people and other agencies, even if it is assumed a given agency is part of what power works in or upon. Still, in practice Foucault often seems to deny individuals this agency, which is contrasted with sovereignty (the old model of power as efficacious and rigid).Deconstruction often works to reveal hidden power structures and relationships."One needs to be nominalistic, no doubt: power is not an institution, and not a structure; neither is it a certain strength we are endowed with; it is the name that one attributes to a complex strategical situation in a particular society." (History of Sexuality, p.93)"Domination" is not "that solid and global kind of domination that one person exercises over others, or one group over another, but the manifold forms of domination that can be exercised within society." (ibid, p.96)"One should try to locate power at the extreme of its exercise, where it is always less legal in character." (ibid, p.97)"The analysis [of power] should not attempt to consider power from its internal point of view and...should refrain from posing the labyrinthine and unanswerable question: 'Who then has power and what has he in mind? What is the aim of someone who possesses power?' Instead, it is a case of studying power at the point where its intention, if it has one, is completely invested in its real and effective practices." (ibid, p.97)"Let us ask...how things work at the level of on-going subjugation, at the level of those continous and uninterrupted processes which subject our bodies, govern our gestures, dictate our behaviours, etc....we should try to discover how it is that subjects are gradually, progressively, really and materially constituted through a multiplicity of organisms, forces, energies, materials, desires, thoughts, etc. We should try to grasp subjection in its material instance as a constitution of subjects." (ibid, p.97)TofflerAlvin Toffler's Powershift argues that the three main kinds of power are violence, wealth, and knowledge with other kinds of power being variations of these three (typically knowledge).Each successive kind of power represents a more flexible kind of power. Violence can only be used negatively, to punish. Wealth can be used both negatively (by withholding money) and positively (by advancing/spending money). Knowledge can be used in these ways but, additionally, can be used in a transformative way. For example, one can share knowledge on agriculture to ensure that everyone is capable of supplying himself and his family of food. Also, allied nations with a shared identity form with the spread of religious or political philosophies.Toffler argues that the very nature of power is currently shifting. Throughout history, power has often shifted from one group to another; however, at this time, the dominant form of power is changing. During the Industrial Revolution, power shifted from a nobility acting primarily through violence to industrialists and financiers acting through wealth. Of course, the nobility used wealth just as the industrial elite used violence, but the dominant form of power shifted from violence to wealth. Today, a Third Wave of shifting power is taking place with wealth being overtaken by knowledge.Unmarked CategoriesThe idea of unmarked categories originated in feminism. The theory analyses the culture of the powerful. The powerful comprise those people in society with easy access to resources, those who can exercise power without considering their actions. For the powerful, their culture seems obvious; for the powerless, on the other hand, it remains out of reach, élite and expensive.The unmarked category can form the identifying mark of the powerful. The unmarked category becomes the standard against which to measure everything else. For most American readers, it is posited that if a protagonist's race is not indicated, it will be assumed by the reader that the protagonist is Caucasian; if a sexual identity is not indicated, it will be assumed by the reader that the protagonist is heterosexual; if the gender of a body is not indicated, will be assumed by the reader that it is male; if a disability is not indicated, it will be assumed by the reader that the protagonist is able bodied, just as a set of examples.One can often overlook unmarked categories. Whiteness forms an unmarked category not commonly visible to the powerful, as they often fall within this category. The unmarked category becomes the norm, with the other categories relegated to deviant status. Social groups can applythis view of power to race, gender, and disability without modification: the able body is the neutral body; the man is the normal status.Representation/CounterpowerGilles Deleuze, a French theorist, compared voting for political representation with being taken hostage. A representational government assumes that people can be divided into categories with distinct shared interests. The representative is regarded as embodying the interests of the group. Many social movements have been successful in gaining access to governments: the working class, women, young people and ethnic minorities are part of the government in many nation-states. However, there is no government where the government represents the population along the characteristics of the categories.The problem of finding suitable representatives relates to an individual's membership of different categories at the same time. The only truly representative government for a population is the population itself. These ideas have become popular in social movements for global justice. The logic of government open to all underpins the social forums (such as the World Social Forum) that have developed in contradistinction to the forums of the powerful. These alternative forms are sometimes called counter-power.Participation/LiberationThis view appears in many projects of social change, but its founder Paulo Freire is largely unknown. Freire assumes that people carry archives of knowledge within them. In particular he rejects the idea that people remain ignorant unless they have learned to communicate using the culture of the powerful. The person is seen as part of a culture circle with its own view of reality, based on the circumstances of everyday living.Dialogue can bring about social change. Such dialogue directly opposes the monologue of the culture of the powerful. Dialogue expands the understanding of the world rather than teaching a correct understanding. The process of social change starts with action, on which the group then reflects. Commonly, more action of some kind then results...See also•authority•charisma and charismatic authority•domination•oppression and hierarchy of oppression•power (international)•social class•social statusSource•Aldrich, Robert and Wotherspoon, Gary (Eds.) (2001). Who's Who in Contemporary Gay & Lesbian History: From World War II to the Present Day. New York: Routledge. ISBN 041522974X.。
HSK-4-lesson05只买对的,不买贵的
语言点
尤其
1. 您女儿真可爱,长得真像您,尤其是眼睛。
练习
判断下列句子中的“原来”是否使用正确,如不正确,请改正: 1. 是你原来啊!我几乎没认出来。 2. 我觉得他原来应该学法律,不过后来发现新闻专业更适合他。 3. 今天晚上怎么这么冷?天气预报原来还说今晚25度呢!
课文
听录音,回答问题: 1. 王静为什么想买冰箱? 2. 李进开始为什么不同意买冰箱? 3. 后来为什么又同意了?
练习
选择合适的词语填空
邀请 流行
打折
顺便 效果
1.女儿喜欢在电脑上看电影,可我还是更愿意去电影院看,因为我 觉得电影院的_____更好,那儿更吸引我。 2.A:小王,又去逛街了?买什么东西了?
B:现在正是换季,好多商店都在_____,你看,这些东西都比平时 便宜了一半还多。
3.A:这条红裙子你穿着挺好看的。 B:不过今年不怎么_____这个颜色。
王静:你说的也对。
STANDARD COURSE HSK 4 A
第五课 只买对的,不买贵的
Part4 课文 4
词汇(四)
考虑 标准 样子 年龄 浪费
kǎolǜ biāozhǔn yàngzi niánlíng làngfèi
v. to consider n. standard n. look, appearance n. age v. to waste
词汇(一)
家具 沙发 打折 价格
jiājù shāfā dǎ zhé jiàgé
n. furniture n. sofa v. to give a discount n. price
词汇(一)
质量 肯定 流行
zhìliàng kěndìng liúxíng
新概念英语第二册Lesson05Nowrongnumbers讲义
新概念英语第二册Lesson 05No wrong numbers 无错号之虞Mr.James Scott has a garage in Silbury and now he has just bought another garage in Pinhurst. Pinhurst is only five miles from Silbury, but Mr. Scott cannot get a telephone for his new garage, so he has just bought twelve pigeons. Yesterday, a pigeon carried the first message from Pinhurst to Silbury. The bird covered the distance in three minutes. Up to now, Mr.Scott has sent a great many requests for spare parts and other urgent messages from one garage to the other. In this way, he has begun his own private telephone service.【课文翻译】Mr.James Scott has a garage in Silbury and now he has just bought another garage in Pinhurst.詹姆斯.斯科特先生在锡尔伯里有一个汽车修理部,现在他刚在平赫斯特买了另一个汽车修理部。
Pinhurst is only five miles from Silbury, but Mr. Scott cannot get a telephone for his new garage, so he has just bought twelve pigeons.平赫特离锡尔伯里只有5英里,但詹姆斯.斯科特先生未能为他新的汽车修理部搞到一部电话机,所以他买了只鸽子。
新概念英语第一册第5课_课件
法国人
German[‘dʒə:mən] 德国人
Japanese[,dʒæpə‘ni:z] 日本人
Korean[kə‘riən]
韩国人
Chinese[,tʃai‘ni:z]
中国人
第三十五页,共64页。
nice[‘nais]
meet[mi:t]
too[tu:]
美好的
遇见 也
第三第十三十六六页页,,共共646页4。页。
And this is Chang-woo.
He’s Korean .
韩国人 Korean 中国人 Chinese
我们是中国人。
We are Chinese. 晓惠是一个中国的学生。
Xiaohui is a Chinese student.
第四十七页,共64页。
Grammar
3个冠词 a,an是不定冠词,一个,用于: 可数名词单数前面 用在短文中第一次出现的名词之前
Korean America
Italy
第二十五页,共64页。
China
German ['dʒə:mən] 德国人 Japanese [,dʒæpə'ni:z] 日本人
Korean [kə'riən] 韩国人 Chinese [,tʃai'ni:z] 中国人
Italian [ɪ‘tælɪən] 意大利人
This is Miss Sophie Dupont.
介绍他人的时候经常用This is…
向别人介绍自己时:
My name is… I am …
这是我妈妈。
This is my mother .
第四十一页,共64页。
Lesson05Nowrongnumbers(新概念2完整笔记,个人从头整理版)
Lesson 05 No wrong numbers【New words and expressions】(7)pigeon n.鸽子message n.信息cover v.越过distance n.距离request n.要求,请求spare part 备件service n.业务,效劳★pigeon n.鸽子 dove n.鸽子;鸽派人士It's not my pigeon.=None of my business.不关我的事。
carrier pigeon信鸽homing pigeon信鸽,传信鸽young pigeon乳鸽★message n.(口头或书面的)信息Here is a message for you from your sister.an oral/written message 口信/便条leave sb. a message给……留便条I'll leave you a message.take a message for sb.替某人捎口信Can I take a message for you?我能替你捎个口信吗?Can you take a message for me?你能替我捎个口信吗?take a message to sb.给某人口信打:Hello!--May I have a word with Tom ?/May I speak with/to Tom?--Can you take a message for me?information n.信息(不可数)messenger n.送信人,信使★cover v.越过;覆盖① vt.盖,覆盖Snow covered the whole village.She covered the child with a coat. 她给小孩盖了件外衣。
② vt.行过(一段距离),走过(通常不用被动语态)cover+距离越过……You can cover the distance to the museum in ten minutes.③ n.覆盖物,盖子,罩子,套子Put a cover on the box!★distance n.距离keep distance 维持距离distantCan I share this table?Can I join you?distance n.距离 distant adj.远距离的importance n.重要 important adj.重要的difference n.不同 different adj.不同的★request n.要求, 请求 v.要求,请求① n.要求,请求request for 对……有请求, 有需求I have a request for the cake.He granted my request for more time.他同意了我延长时刻的请求。
自考英语翻译lesson 05 ex
• 由于他的远见,他便去西部新兴草原市镇芝加哥,在 由于他的远见,他便去西部新兴草原市镇芝加哥, 新兴草原市镇芝加哥 开设了 那里他开设 收割机厂。 那里他开设了收割机厂。到1860年,他售出收割机共 年 有二十五万架之多。 有二十五万架之多。
翻译技法: 翻译技法:分 译
2012-5-7
Lesson 05 Exercise
10
2003/04 选择题 原 文 : Scarcely less important than machinery in the agricultural revolution was science. A. B. C. D. 在农业革命中,科学没有机械重要。 在农业革命中,科学没有机械重要。 在农业革命中,机械没有科学重要。 在农业革命中,机械没有科学重要。 在农业革命中,科学和机械几乎同等重要。 在农业革命中,科学和机械几乎同等重要。 在农业革命中,机械和科学都不怎么重要。 在农业革命中,机械和科学都不怎么重要。
翻译技法: 翻译技法:增 添
2012-5-7 Lesson 05 Exercise
9
翻译技法: 翻译技法:动宾结 构转译成介词短语
Foreseeing the demand, he headed west to the young prairie town of Chicago, where he set up a reaper factory and by 1860 sold a quarter of a million reapers.
2012-5-7
Lesson 05 Exercise
3
become three times as much or as many 是… 的三倍
Between 1860 and 1910, the number of farms in the United States trebled, increasing from 2 million to 6 million while the area farmed more than doubled from 160 million to 352 million hectares. • 在1860年至 年至1910年间,美国的农场数增加了两倍,自 年间, 增加了两倍, 年至 年间 美国的农场数增加了两倍 扩大了一倍多 200万个增加到 万个增加到600万个,耕地的面积扩大了一倍多, 万个, 万个增加到 万个 耕地的面积扩大了一倍 亿公顷增至3.52亿公顷。 亿公顷。 从1.6亿公顷增至 亿公顷增至 亿公顷
lesson05多边形填充.ppt
简单种子填充算法
简单种子填充算法描述
1. 进种子点压入栈
2. while 堆栈非空 do begin
3.
从堆栈中弹出一个点(x,y)
4.
将该点(x,y)置成所要求的值
5.
if点(x+1,y)不是边界点且点(x+1,y)未设置成所要求的值
then 将点(x+1,y)压入堆栈
6.
if点(x-1,y)不是边界点且点(x-1,y)未设置成所要求的值
区 域:指已经表示成点阵形式的填充 图形,它是象素的集合。区域可采用内 点表示和边界表示两种表示形式。在内 点表示中,区域内的所有象素着同一颜 色。在边界表示中,区域的边界点着同 一颜色。
区域填充:指先将区域的一点赋予指定 的颜色,然后将该颜色扩展到整个区域 的过程。
连通域的概念
区域填充算法要求区域是连通的, 因为只有在连通区域中,才可能将 种子点的颜色扩展到区域内的其它 点。
end
10. end of algorithm
简单种子填充算法
3、简单种子填充算法原理
多边形的描述:
– 多边形的定义:内部点值定义区域, 边界定义区域
– 给出一有序的n个顶点表:P={pi|pi =(xi,yi),1≤i≤n}
– 构造一个有序边表:E={ei|ei=pipi+1,1≤i≤n-1, en=pnp1,pi∈P,1≤i≤n}
(1)求交:计算扫描线与多边形各边的交点;
(2)排序:把所有交点按x值递增顺序排序;
(3)配对:第一个与第二个,第三个与第 10 P3
四个等等;每对交点代表扫描线与
8
e3
e4
P5
e5
_Lesson_05_Foundations_of_Planning
Foundations of Planning
计划的基础 计划的基础
References: Stephen Robbins / Mary Coulter; Chapter 7, Stephen Robbins / David DeCenzo; Chapter 3
1
Lesson Outline
Strategic 战略的 versus operational 运营的
Time frame 时间架构shi jian jia gou 时间架
Long term 长期 versus short term 短期 Specificity 具体性ju ti xing Directional 方向性 versus specific 具体性 Frequency of use 使用频率shi yong pin lv Single 一次性 use versus standing 特续性
14
Types of Plans 计划的类型
宽度
时间架 时间架构
具体性
使用频率
战略的
长期
方向性
一次性
运营的
短期
具体性
特续性
Exhibit 7.2
15
Types of Plans 计划的类型
Strategic Plans 战略的计划 战略的计划
Apply to the entire organization Establish the organization’s overall goals. Seek to position the organization in terms of its environment. Cover extended periods of time.
Lesson05-06(教学设计)-2024-2025学年新概念英语第一册
1. 一般现在时被动语态的运用
例题:
- 句子:Who is the book written by?
- 答案:The book is written by John.
- 说明:一般现在时被动语态的结构是am/is/are + 过去分词,在这个例题中,我们需要用一般现在时被动语态来回答问题,即"The book is written by John."
- 拓展学习:利用老师提供的拓展资源,进行进一步的学习和思考。
- 反思总结:对自己的学习过程和成果进行反思和总结,提出改进建议。
教学方法/手段/资源:
- 自主学习法:引导学生自主完成作业和拓展学习。
- 反思总结法:引导学生对自己的学习过程和成果进行反思和总结。
- 作用与目的:巩固学生在课堂上学到的Lesson05-06的知识点和解题技能。通过拓展学习,拓宽学生的知识视野和思维方式。通过反思总结,帮助学生发现自己的不足并提出改进建议,促进自我提升。
2. 一般过去时被动语态的运用
例题:
- 句子:Who sent the letter last week?
- 答案:The letter was sent by John last week.
- 说明:一般过去时被动语态的结构是was/were + 过去分词,在这个例题中,我们需要用一般过去时被动语态来回答问题,即"The letter was sent by John last week."
Lesson05-06(教学设计)-2024-2025学年新概念英语第一册
课题:
科目:
班级:
课时:计划1课时
教师:
单位:
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
(a)
fr
G
解:木箱所受的力为:拉力F ,方向与斜面成100角向上;重力 G ,方向竖直向下;斜面对木箱的支持力N ,方向垂直于斜面 向上,斜面对木箱的摩擦力 f r方向和斜面平行,与木箱运动 方向相反,已知l=3m,每个力所作的功可计算如下。
9
(1)拉力F 所做的功A1
A1 Fl cos 10 700 3 0.985J 2.07 10 J
(2)根据合力所作功等于各分力功的代数和,算出合力 所作的功
A A1 A2 A3 A4 165J
(3)如改用起重机把木箱吊上汽车,这时所用拉力
少要等于重力 G 。在这个拉力( F' = 980N
F
至
)的作用下,木
箱移动的竖直距离是
lsin30。因此拉力所作的功为:
(SI)对该质点所作的功,(1)沿ODC;(2)沿OBC。
解: F ( 4 2 y ) i
即 : Fx 4 2 y Fy 0
B
2
2
(1)OD段:y=0,dy=0, DC段:x=2,Fy=0
W ODC
OD
F dr
DC
F dr
O
( 4 2 0 ) dx 0 8 J
L v0
O
x
L
s
解:由于物体是柔软匀质的,在物体完全滑上台面之前,它 对台面的正压力可认为与滑上台面的质量成正比,所以,它 所受台面的摩擦力fr 是变化的。本题如果用牛顿定律的瞬时 关系求加速度是不太方便的。我们把变化的摩擦力表示为 m 0 < x < L, f r gx L
13
x L,
dv=adt =(F/m)dt = (6t/2)dt =3tdt v dv
0
2
0
3tdt 1.5 t
2
2 3 所以力所作的功为 W Fdx 6 t 1 . 5 t dt 9 t dt 36 J
3
0
例题:一个质点沿如图所示的路径运行,求力 F (4 2 y)i
二、成对力的功
设有两个质点1和2,质量分别为 m1 和 m2, 为质点1受到 F 1 质点2的作用力, 2 F 为质点2受到质点1的作用力,它们是一对作 用力和反作用力(成对力)。 z F m2 2 r d A1 F1 d r1 m 1 F1 dr d r 2 dr d A2 F2 d r2 r2 1 dr
•变力的功 分成许多微小的位移元,在每一个 位移元内,力所作的功为
Z
dr
b
F
dW F d S F cos ds
总功
W = dW
a O
Y
F dS
X
F cos
ds
•合力的功
W = F d S = ( Fi ) d S
WG
b a zb
z
dr
b
b mg dr ( mg )k ( dxi dyj dzk )
a
mg
0
( mg)dz ( mgz b mgz a )
za
x
y
可见,重力作功仅仅与物体的始末位置有关,而与运 动物体所经历的路径无关。
由此可见,成对作用力与反作用力所作的总功只与作用力 F2 及相对位移 d r 有关,而与每个质点各自的运动无关。 表明:任何一对作用力和反作用力所作的总功具有与参考系 选择无关的不变性质。在任意的参考系中,成对保守力的功只取决 于相互作用质点的始末相对位置,而与各质点的运动路径无关。
17
}
dW F dr dv m v dr m v dv dr
dW F dr
W 1 2 mv
2 2
v2 v1
m v dv
1 2
•质点的动能定理:
mv
2 1
合外力对质点所作的功等于质点 动能的增量。
o
Fl sin 30 980 3 0.5 J 1.47 103 J A
11
A A2
例题2-10
l
利用动能定理重做例题1-13。
l
解:如图所示,细棒下落过程中,合外力对它作的功为
A (G B)dx ( l x) gdx l g l g 0 0 2
r1 d A F1 d r1 F2 d r2 F1 d r1 F2 (d r1 d r ) O x F2 d r
1
r dr
y
三、保守力与非保守力
某些力对质点做功的大小只与质点的始末位置有关,而与 路径无关, (如:重力,弹性力,万有引力等)这种力称为保 守力,否则该力(如:摩擦力)称为非保守力(耗散力)。 保守力作功: A WACB WADB F dr F dr
WF
b
a
b Mm F dl G0 3 r dl a r
rb
rb
dr
G0
ra
Mm
3
rdr
(G0
r Mm
r
Mm rb )
ra
) (G0
F
r
dl
m
M ra a
由此可见,万有引力作功也仅仅与质点 的始末位置有关,与具体路径无关。
16
0
C 2 D
(2)OB段:Fy=0, BC段:y=2
W OBC
OB
F dr
BC
2 F dr 0 (4 2 2) dx 0 0
结论:力作功与路径有关,即力沿不同的路径所作的功是不同的
4
2、功率
•定义:单位时间内完成的功,叫做功率 平均功率 瞬时功率
2.弹力的功
F kx WS x kxdx
a
xb
1 2
kx
2 a
1 2
kx
2 b
F
15
可见,弹性力作功也仅仅与质点的 始末位置有关,与具体路径无关。
0 xa xb
x
3.万有引力的功
两个质点在引力作用下作 相对运动,以M为原点作m 的 r dl rdl cos rdr 位矢,M 指向m 的方向为该矢径 的正方向。m 受的引力方向与 b 1 该矢径方向相反,m由a→b时引 r 2 3 力所作的功为: r r
复 习
•质心
•质心运动定理
rc
n
i 1
n m i ri / m i
i 1
dv c Fc M M ac dt
重力势能
•冲量
•动量定理 •动量守恒定律
引力势能
t2 I = F dt
E
t1
p
mgy
I
E p G
弹性势能
Ep
r F dt= P 1
三、动能定理 •问题:
能量穿梭机视频
一质量为m 的物体在合外力F的作用下,由A点运动到B 点,其速度的大小由v1变成v2。那么合外力对物体所作的功 与物体哪些因素有关?
6
如图: dW F d r
dr dv dv dv m F ma m = mv dt dr dr dt
Mm
2
kx
Байду номын сангаас
P=
i
m i vi = M v c = 常 矢 量
2
§2-3 功 动能 动能定理
一、功的概念 1、功
•恒力的功 力对质点所作的功等于该力在位移 方向上的分量与位移大小的乘积
W=F S
标 量 形 式 : W = FScos
F
F
m S
m
1
说明 •功是标量,没有方向,只有大小,但有正负 <p/2,功W为正值,力对物体作正功; p/2,功W=0, 力对物体不作功; >p/2,功W为负值,力对物体作负功,或 物体克服该力作功。 •单位:焦耳(J) 1J=1N· m
f r mg
当物体前端在s处停止时,摩擦力做的功为
A F d x f r d x 0
L
m L
gx d x L mg d x
s
mg (
L
s L) mg ( s ) 2 2
L
再由动能定理得
mg ( s L 2 )0 1 2 mv0
N=G cos 30 -F sin10 727 N 由此可求得摩擦力:
100 fr
f r N 0.20 727 N 145 N
10
A4=f r l cos180 145 3J 435J
G
因为重力和摩擦力在这里是阻碍物体运动的力,所以它
们对物体所作的功都是负值。
W = F x dx F y dy F z dz
例题:设作用在质量为2kg的物体上的力F =6t(N)。如果物体由静 止出发沿直线运动,问在头2s时间内,这个力对物体所作的功。 解: Fdx 6 tdx W
d x vd t
dx vdt 1.5t dt
2
v
t
定义:动能Ek= mv2/2 (单位:J)