Brief history of derivative
历史英语词汇大全探索历史学术语重温历史的壮丽卷
历史英语词汇大全探索历史学术语重温历史的壮丽卷【历史英语词汇大全探索历史学术语重温历史的壮丽卷】一、简介历史是人类社会发展的重要组成部分,在研究历史时,人们常常会遇到许多专业术语。
这些术语既是历史学研究的工具,也是理解历史背后的深层次含义的关键。
本文将对历史学中的英语词汇进行全面探索,以期加深对历史学术语的理解,重温历史的壮丽卷。
二、历史学概念1. History - 历史History refers to the study of the past, particularly human past. It involves the collection, analysis, and interpretation of information about past events and experiences. By studying history, we can better understand the development of societies and civilizations.2. Archaeology - 考古学Archaeology is the study of human activity through the recovery and analysis of artifacts, structures, and other physical remains. It helps us reconstruct the past and learn about ancient cultures, technologies, and lifestyles.3. Anthropology - 人类学Anthropology is the study of humans and human societies, focusing on their culture, biology, language, and social structures. It provides insights into the diversity and evolution of human beings.4. Paleontology - 古生物学Paleontology is the study of prehistoric life through the examination of plant and animal fossils. It helps us understand the history of life on Earth and the evolutionary processes that have shaped different species.5. Historiography - 历史学方法论Historiography refers to the study of historical writing and the methods used by historians to gather and interpret information. It involves analyzing sources, evaluating evidence, and constructing narratives about the past.三、历史时期1. Ancient History - 古代史Ancient history refers to the period of human history before the Middle Ages, typically covering the civilizations of Mesopotamia, Egypt, Greece, Rome, and others. It encompasses a wide range of cultures and developments.2. Medieval History - 中世纪史Medieval history covers the period between the fall of the Western Roman Empire and the beginning of the Renaissance. It includes the rise of feudalism, the spread of Christianity, and the development of chivalry and Gothic art.3. Renaissance - 文艺复兴The Renaissance was a cultural and intellectual movement in Europe that spanned from the 14th to the 17th century. It marked a shift from the medieval to the modern world, with significant advancements in art, science, and philosophy.4. Enlightenment - 启蒙运动The Enlightenment was an intellectual and philosophical movement in Europe during the 18th century. It emphasized reason, rationality, and science, challenging traditional authority and promoting individual freedom and equality.5. Industrial Revolution - 工业革命The Industrial Revolution was a major turning point in human history, characterized by the transition from handmade goods to machine production. It began in the late 18th century in Britain and had far-reaching impacts on society, economy, and technology.四、重要历史事件1. American Revolution - 美国革命The American Revolution was a political and military conflict between Great Britain and thirteen British colonies in North America. It resulted in the formation of the United States of America and inspired revolutionary movements worldwide.2. French Revolution - 法国大革命The French Revolution was a period of radical social and political upheaval in France, resulting in the overthrow of the monarchy and the riseof Napoleon Bonaparte. It had a profound impact on European history andthe spread of democratic ideals.3. World War I - 第一次世界大战World War I was a global conflict that lasted from 1914 to 1918, involving many of the world's major powers. It caused unprecedented destruction and loss of life, leading to significant political and social changes.4. Cold War - 冷战The Cold War was a period of political tension and rivalry between the United States and the Soviet Union after World War II. It was characterized by the arms race, ideological competition, and proxy wars, shaping global politics for several decades.5. Civil Rights Movement - 民权运动The Civil Rights Movement was a social and political struggle for equal rights and racial equality, primarily in the United States. It challenged racial segregation and discrimination, leading to significant legal and social changes.五、结语通过对历史学术语的探索,我们可以更深入地理解过去文明的发展和演变。
历史唯物主义辩证法英文
历史唯物主义辩证法英文Historical Materialism and Dialectics.Historical materialism, often referred to as Marxist-Leninist philosophy, is a theoretical framework that interprets historical development, particularly social change, through the lens of materialist dialectics. It is a worldview and methodology that seek to understand the interaction between economic structures, political systems, cultural phenomena, and ideological beliefs, emphasizing the primary role of economic forces in shaping societal developments.At its core, historical materialism posits that the material conditions of life, particularly the modes of production and exchange, are the primary determinants of societal evolution. These economic relationships give rise to political institutions, cultural expressions, and ideological beliefs, which in turn influence the material conditions, creating a dialectical relationship between thebase and the superstructure.Dialectics, as a philosophical method, emphasizes the internal contradictions and tensions within any given system. It views change not as something external or imposed from outside but as arising from within the system itself through the interaction of opposing forces. In historical materialism, this dialectical approach is applied to the analysis of historical processes, showing how opposing classes and interests interact and transform over time.The materialist approach rejects idealism, which posits that ideas, consciousness, or spirit are the primary movers of history. Instead, it argues that material forces — such as the productive forces and relations of production — are the ultimate determinant of historical development. These forces are not static but constantly evolving, giving rise to conflicts and transformations that shape the course of history.Within this framework, class struggle is seen as acentral mechanism of historical change. The emergence of distinct classes — typically the bourgeoisie and the proletariat — and their conflicts over economic resources and political power drive the historical process. The resolution of these conflicts, often through revolution, leads to the transformation of societal structures and relations.Historical materialism also recognizes the role of cultural and ideological factors in historical development. Culture and ideology, while influenced by the material conditions, can have autonomous effects on social life.They shape people's beliefs, values, and behaviors, influencing the way they interact with their material environment.However, it is important to note that historical materialism does not reduce history to a deterministic process. While it recognizes the primacy of economic forces, it also acknowledges the agency of individuals and groupsin shaping history. People are not mere pawns of economic structures but active agents who can influence andtransform their material conditions.In conclusion, historical materialism and dialectics offer a comprehensive framework for understandinghistorical development and societal change. By emphasizing the primacy of economic forces and the dialectical interaction between opposing forces, it provides a methodfor analyzing the complex interactions between social, political, cultural, and ideological factors. This approach, while recognizing the limits of material forces, also acknowledges the agency of individuals and groups inshaping their own destiny.。
希罗多德的alter egos: 《历史》叙事中的“第二自我”与《历史》叙述
希罗多德的alter egos:《历史》叙事中的“第二自我”与《历史》叙述摘要:希罗多德《历史》叙事中的“第二自我”(alter egos)从不同层面揭示出这位“历史之父”的多重身份,并不同程度地推进了《历史》的叙事与叙述主题的多角度展现。
希罗多德通过建构文本中的“第二自我”试图树立自身的权威,并向雅典的受叙者(narratee)传递影响超越文本局限的“永恒真理”。
伴随着叙事情节发展与希罗多德史学思想传递的需要,《历史》叙事中的“第二自我”产生转变,并表现出二元特征,叙事中的“第二自我” 和受叙者与希罗多德和雅典听众间存在着多重的互应关系。
关键词:希罗多德;《历史》;第二自我希罗多德的《历史》(Historia)是一部宏大的叙述作品,他将众多内容、形式迥异的叙事(logos)①串联,融进《历史》庞杂②的叙述③体系。
传统观点认为,希罗多德《历史》中的logoi(古希腊语logos的复数:叙事)仅仅是一些被用来创造戏剧性效果(dramatic effect),以取悦受众的“插话”(digressions),而自身并不包含那些有益于子孙后代,并为他们提供参考和借鉴意义的永恒真理(historical truth)。
然而,从单一叙事(logos)文本的角度研究希罗多德的叙述动机(narrative motive),容易把它与《历史》整体的叙述割裂开来。
值得注意的是,希罗多德拥有多重面相。
一个叙事中,特定的人物形象在文本叙述中往往被视为真实作者个人形象的再现或真实作者理想的、文学化的形象创造,它被称为叙述者在文本中重构的“第二自我”(second self,persona)。
[1](P99)希罗多德在《历史》的叙事中采用了“第二自我”(alter ego)的叙述策略,以从不同侧面展示他的多重身份。
希罗多德处于深受雅典民主制下口头表演文化(oral performance culture)[2](P8~29)影响的古典时期,对于演说技巧演说在古希腊文化中具有十分重要的意义,在荷马社会,拥有出色的演说才能是赢得领导权的有效手段。
Renaissance英国文学文艺复兴时期
• 2). Religious reformation • Henry VIII declared the break with Rome • Catholicism(天主教)was got rid of and Protestantism (新教)became the official national religion.
The Bourgeoisie
• The word "bourgeoisie" originally meant "town dwellers", especially those who lived by trading. By nature, the feudal order was agrarian. At the time of the Renaissance, the bourgeoisie appeared as a new class of society, and the conflicts between the newly arising bourgeoisie and feudalism and the Church became the main social contradiction of the time. Humanism was the very weapon for the bourgeoisie to use in its fight against feudalism restrictions and the dominating influence of the church, which had ruled men’s minds for centuries.
General introduction
• The Renaissance was a cultural movement that spanned the period roughly from the 14th to the 17th century. It began in Italy in the Late Middle Ages and later spread to the rest of Europe by the 16th century. Its influence was felt in literature, philosophy, art, music, politics, science, religion, and other aspects of intellectual inquiry.
金银岛英文介绍TreasureIsland
Influence of works
The Impact on Adventure Novels
Treasure Island has had a profound impact on the development of adventure novels, opening up a new chapter in adventure novels and becoming a classic work of adventure novels.
04
CATALOGUE
Artistic characteristics
Narrative style
Complex plot
Pace and tension
Unique voice
The plot of Treasure Island is highly complex, with numerical characters and subplots that interwine to create a captioning storyline
Characterization
Well developed characters
The characters in Treasure Island are well developed and have distinct personalities that are explored in depth
Source of creative inspiration
Historical Background
Character development
Treasure Island's creative inspiration comes from Stevenson's discussions with friends, who discuss stories about pirates and treasure hunting, and these elements become the main plot of Treasure Island.
杜邦安全管理介绍
所有安全操作隐患是可以控制的
Working safely is a condition of employment. Employees must receive safety training. Management audits are a “must. Deficiencies must be corrected promptly. Off-the-job safety is important. Good safety is good business. 安全是被雇佣的一个条件 员工必须接受严格的安全培训 各级主管必须进行安全检查 发现的安全隐患必须及时更正 良好的安全创造良好的业绩 工作外的安全和工作中的安全同样重要
和支持,并从中起调节和杠杆作用 ●在技术/安全法规/执法方面为各个地方,业务部门和区域的协作提供支持.
●提供指导用以帮助提高公司SHE的表现,提升对于安全价值的认知.
●开发和维护SHE监控系统和指标,其中包括领导和组织第二方安全审纪和监督 (Second Audit).
Conceptual Structure of DuPont Safety Management 杜邦安全管理系统简介
“We believe that all injuries and occupational illnesses, as well as safety and environmental incidents, are preventable, and our goal for all of them is zero. We will promote off-the-job safety for our employees.” 我们坚信所有工伤和职业病以及安全和环境事故都是可以防止的,我们对以 上各项的目标是零. 我们将促进员工工作外安全” The DuPont Commitment Safety, Health, and the Environment July 1994
读书分享读书交流会《哈姆雷特》英语介绍课件(共22张PPT)
PART.06
Hamlet is typical of the Renaissance humanists.
Before his mother married his uncle,He can treat people equally, not to the Prince itself. He opposed the feudal jus sanguinis(血统主义), that "fat king is a beggar with a thin table, two different dishes." He emphasize dearthly life, praise and the pursuit of love.
Brief Introduction
Main Characters
PART.03
-
Main Characters
Main Characters
Main Characters
Main Characters
Hamlet
Claudius
Gertrude
Ophelia
Laertes
The Ghost
Hamlet
哈姆雷特读书分享
Contents
The WriterBrief IntroductionMain CharactersThe PlotClassic LinesComment on Hamlet
历史学专业英语词汇
Unit 1history ['histri] n. 历史,历史学narrative ['nærətiv] n. 记事,叙事Herodotus [hə'rɔdətəs] n. 希罗多德circa ['sə:kə] prep. (拉丁语)大约(简写c., ca., cir., circ., C.)Thucydides [θju'sidədi:z] n. 修昔底德chronological [.krɔnə'lɔdʒikəl] adj. 年代学的,按年代顺序的territorial [.teri'tɔ:riəl] adj. 区域性的,地方性的thematically [θi'mætikli] adv. 按主题方式,按专题方式Big History 大历史(学派)archaeology [.ɑ:ki'ɔlədʒi] n. 考古学methodology [.meθə'dɔlədʒi] n. 方法论approach [ə'prəutʃ] n. 研究方法discipline ['disiplin] n. 学科perspective [pə'spektiv] n. 观点the humanities [hju:'mænitiz] 人文学科the social sciences 社会科学classification [.klæsifi'keiʃən] n. 分类anthropology [.ænθrə'pɔlədʒi] n. 人类学global history 全球史historiography [.histɔ:ri'ɔgrəfi] n. 历史编纂学,史学史,文献学biographical [.baiə'græfikəl] adj. 传记的,传记体的thematic [θi'mætik] adj. 主题的,专题的medieval [medi'i:vəl] adj. 中世纪的philosophy of history 历史哲学meta-level ['metə 'levəl]总体层面,元级teleological [.teli'ɔlədʒikəl] adj. 目的论的diplomatic [.diplə'mætik] adj. 外交的historical method 史学方法primary sources 原始材料epistemology [i.pisti'mɔlədʒi] n. 认识论Peloponnesian [.peləpə'ni:ʃən] adj. 伯罗奔尼撒半岛的divine [di'vain] adj. 神的,神圣的chronology [krə'nɔlədʒi] n. 编年史cyclical ['saiklikl] adj. 循环的posthumous ['pɔstjuməs] adj. 身后的,死后的dynastic [dai'næstik] adj. 王朝的Saint Augustine [seint ɔ:'gʌstin] n. 圣奥古斯丁Christian ['kristjən] adj. 基督教的,基督教徒的the Renaissance [rə'neisəns] n. 文艺复兴,文艺复兴时期religious [ri'lidʒəs] adj. 宗教的Hegel ['heigl] n. 黑格尔secular ['sekjulə] adj. 世俗的Ranke [ræŋk] n. 兰克epic ['epik] adj. 史诗的,叙事的;史诗,叙事诗nationalistic [.næʃənəl'istik] adj. 民族主义的Fernand Braudel [fer'nan brɔ'del] 费尔南•布罗代尔Le Roy Ladurie [lə rwa ladju'ri:] 拉鲁瓦•拉杜里Marc Bloch [mark blɔk] 马克•布洛克Lucien Febvre [lysjæn fevr] 吕西安•费弗尔multi-disciplinary [.mʌlti'disiplinəri] adj. 多学科的the Annales ['ænəlz] School 年鉴学派quantitative history 数量史学raw data 原始数据ethnic ['eθnik] adj. 族群的,族裔的racial ['reiʃəl] adj. 种族的genre ['ʒɑ:nrə] n. 类型,流派,风格history of everyday life 日常生活史Marxist ['mɑ:ksist] adj., n. 马克思主义(者)的;马克思主义者Eric Hobsbawm ['erik 'hɔbsbɔm] 埃里克•霍布斯鲍姆Georges Lefebvre [ʒɔrʒ lə'fevr] 乔治•勒费弗尔François Furet [fran'swa fy're] 弗朗索瓦•弗雷Roland Mousnier [rɔ'lan mu:'njei] 罗兰•穆尼埃anti-Marxist adj. 反马克思主义的feminist ['feminist] adj. 女性主义的,女权主义的;女权主义者postmodernist [.pəust'mɔdərnist] n., adj. 后现代主义者;后现代主义(者)的Richard Evans ['ritʃəd 'evənz] 理查德•埃文斯Keith Windschuttle [keiθ 'winʃʌtl] 凯斯•温修德historical periodization [piəriədai'zeiʃən] 历史分期classificatory [.klæsifi'keitəri] adj. 类别的,分类上的retrospective [.retrəu'spektiv] adj. 事后回想的,回顾的the Gilded Age 镀金时代the Dark Age(s) 黑暗时代the First World War 第一次世界大战decimal ['desiməl] adj. 十进法的,以十为基础的talismanic [.tæliz'mænik] adj. 护符(般)的,有护符般效力的the Victorian [vik'tɔ:riən] Era 维多利亚时代the Napoleonic [nə.pəuli'ɔnik] Era 拿破仑时代the Meiji ['mei'dʒi:] Era 明治时代the Merovingian [.mærə'vindʒiən] Period 墨洛温王朝时期Romantic [rə'mæntik] period 浪漫主义时期the sexual ['seksjuəl] revolution 性革命conservative [kən'sə:vətiv] adj. 保守的Roman Catholic ['kæθəlik] culture 罗马天主教文化Franco ['frɔŋkəu] n. 弗朗哥Unit 2primitive culture 原始文化Paul Tournal [pɔl turnal] 保罗·杜纳尔anté-historique ['a:ŋtei 'istɔrik] n.(法语)史前的prehistoric ['pri:his'tɔrik] n. 史前的Daniel Wilson ['dænjəl 'wilsn] 丹尼尔·威尔逊prehistorian [pri:hi'stɔ:riən] n. 从事史前史研究的专家,史前史学家the Stone Age 石器时代the Bronze Age 青铜器时代the Iron Age 铁器时代excavation [.ekskə'veiʃən] n. 发掘geologic [dʒiə'lɔdʒik] adj. 地质学的geographic [dʒiə'græfik] adj. 地理学的literate ['litərit] adj. 识字的,有文化的geneticist [dʒi'netisist] n. 遗传学家linguist ['liŋgwist] n. 语言学家paleontology [.pæliɔn'tɔlədʒi] n. 古生物学biology [bai'ɔlədʒi] n. 生物学geology [dʒi'ɔlədʒi] n. 地质学archaeoastronomy [.ɑ:kiəuəs'trɔnəmi] n. 考古天文学linguistics [liŋ'gwistiks] n. 语言学molecular [mə'lekjulə] adj. 分子的genetics [dʒi'netiks] n. 遗传学archaeological [.a:kiə'lɔdʒikəl] adj. 考古的,考古学上的artifact ['ɑ:tifækt] n. 人工制品anonymous [ə'nɔniməs] adj. 无名无姓的,匿名的Neanderthal [ni'ændətɑ:l] n. 尼安德特人academic [.ækə'demik] adj. 学术上的,从事学术研究的New Guinea [nju: 'gini] n. 新几内亚Paleolithic [.pæliəu'liθik] n. 旧石器时代;adj. 旧石器时代的the Lower Paleolithic 旧石器时代早期Homo sapiens ['həuməu 'seipienz] n. 智人(现代人的学名)Homo habilis ['həuməu 'hæbilis] n. 能人species ['spi:ʃi:z] n. 种类,物种usher ['ʌʃə] vi. 引入,引导anatomic [.ænə'tɔmik] adj. 解剖学上的burial ['beriəl] n. 埋葬,葬礼,坟墓sophisticated [sə'fisti.keitid] adj. 复杂的,精密的,老练的highlight ['hailait] n. 精彩部分,闪光点the Middle Paleolithic 旧石器时代中期the Cro-Magnon ['krəʊ'mænjɔŋ] n. 克罗马尼翁人nomadic [nəu'mædik] adj. 游牧的,游牧民族的,流浪的hunter-gatherer n. 捕猎采集者egalitarian [i.gæli'tɛəriən] adj. 平等主义的sedentary ['sedən.təri] adj. 定居的,固定不动的chiefdom ['tʃi:fdəm] n. 首领的地位,首领的权威stratification [.strætifi'keiʃən] n. 分层indigenous [in'didʒinəs] adj. 土著的,土生土长的,本地的the Upper Paleolithic 旧石器时代晚期Mesolithic [.mesə'liθik] n. 中石器时代;adj. 中石器时代的the Middle Stone Age 中石器时代Neolithic [.ni:əu'liθik] n. 新石器时代;adj. 新石器时代的Pleistocene ['plaistəusi:n] n. 更新世;adj. 更新世的millennia [mi'leniə] (millenniums) n. 数千年marshland ['mɑ:ʃlænd] n. 沼泽地midden ['midn] n. 贝冢deforestation [.di:fɔris'teiʃən] n. 森林开发,滥发森林composite ['kɔmpəzit] adj. 合成的,复合的flint [flint] n. 极硬的东西,打火石microlith ['maikrəliθ] n. 细石器microburin [.maikrə'bjuərin] n. 小雕刻刀tackle ['tækəl] n. 用具,滑车adze, adz [ædz] n. 锛子canoe [kə'nu:] n. 独木舟bow [bəu] n. 弓the New Stone Age 新石器时代domestication [də.mesti'keiʃən] n. 驯养,驯化warfare ['wɔ:fɛə] n. 战争,战事Stonehenge ['stəun'hendʒ] n. 巨石阵millennium [mi'leniəm] n. 一千年Sumerians [su:'miriəns] n. 苏美尔人Peru [pə'ru:] n. 秘鲁Mesoamerica [.mezəuə'merikə] n. 中美洲the Fertile Crescent ['kresənt] n. 新月沃地(西亚伊拉克两河流域连接叙利亚一带地中海东岸的一片弧形地区,为上古文明发源地之一)irrigation [.iri'geiʃən] n. 灌溉the Metal Age 金属时代Chalcolithic [.kælkə'liθik] n. 铜石并用时代;adj. 铜石并用时代的the Old World 旧大陆,东半球(尤指欧洲)metallurgy [me'tælədʒi] n. 冶金术,冶金学metalworking ['metəl.wə:kiŋ] n. 金属加工tin [tin] n. 锡outcropping ['autkrɔpiŋ] n. 露出,露出地表arsenic ['ɑ:sənik] n. 砷,砒霜ferrous ['ferəs] adj. 含铁的cradle ['kreidəl] n. 摇篮,发源地valley ['væli] n. 流域Euphrates [ju:'freiti:z] n. 幼发拉底河Tigris ['taigris] n. 底格里斯河Mesopotamia [.mesəpə'teimiə] n. 两河流域Nile [nail] n. 尼罗河Indus ['indəs] n. 印度河subcontinent [sʌb'kɔntinənt] n. 次大陆adjacent [ə'dʒeisənt] adj. 临近的implement ['implimənt] n. 工具,器具ornament ['ɔ:nəmənt] n. 装饰物,装饰。
美国历史查尔斯比尔德 读后感 英文
美国历史查尔斯比尔德读后感英文The History of America through the Eyes of Charles BeardThe study of American history has been a fascinating and ever-evolving field, with countless scholars and historians contributing to our understanding of the nation's past. Among the most influential and thought-provoking figures in this realm is the renowned historian Charles Beard, whose work has left an indeluring mark on the way we perceive and interpret the history of the United States.Beard's approach to American history was characterized by a deep commitment to understanding the social, economic, and political forces that shaped the nation's development. He rejected the traditional narrative of history as a series of grand events and heroic individuals, instead focusing on the underlying interests and motivations that drove the actions of those in power. This perspective allowed Beard to offer a more nuanced and critical analysis of the past, challenging the prevailing myths and assumptions that had long dominated the field.One of Beard's most significant contributions was his examination of the role of economic factors in shaping the course of Americanhistory. In his seminal work "An Economic Interpretation of the Constitution of the United States," Beard argued that the framers of the Constitution were primarily motivated by their own financial interests, rather than a lofty vision of democracy and liberty. This controversial thesis sparked fierce debate and controversy, but it also paved the way for a more comprehensive understanding of the complex interplay between economics and politics in the early years of the nation.Beard's influence extended beyond his specific historical analyses, as he also played a crucial role in shaping the broader methodological approach to the study of history. He was a proponent of the "progressive" school of historiography, which emphasized the importance of examining the social and economic contexts that shaped historical events, rather than simply recounting the actions of great men and women. This perspective challenged the traditional, often elitist, approach to history and opened the door for a more inclusive and representative understanding of the past.Moreover, Beard's work was not limited to the study of the American past; he also made significant contributions to the understanding of global history and the role of international relations in shaping the course of events. His book "The Rise of American Civilization," for example, offered a sweeping analysis of the economic and social forces that drove the nation's emergence as a global power in thelate 19th and early 20th centuries.Despite the enduring impact of Beard's work, his legacy has not been without controversy. Some historians have criticized his interpretations as overly reductive, arguing that he failed to fully account for the complex interplay of ideological, cultural, and political factors that shaped the course of American history. Others have questioned the reliability of his sources and the rigor of his methodology, suggesting that his conclusions were shaped more by his own ideological biases than by a dispassionate examination of the historical record.Nevertheless, the influence of Charles Beard on the field of American history cannot be overstated. His insistence on examining the economic and social underpinnings of historical events, his willingness to challenge prevailing narratives, and his commitment to a more inclusive and representative understanding of the past have all left an indelible mark on the way we approach the study of history. Whether one agrees with his specific interpretations or not, Beard's work has undoubtedly contributed to a richer and more nuanced understanding of the American experience, and his legacy continues to shape the ongoing dialogue about the meaning and significance of the nation's past.。
辩论的历史文化 英文作文
辩论的历史文化英文作文The art of debate has a rich and fascinating history, deeply ingrained in various cultures across the globe. It's a practice that dates back thousands of years, evolving from ancient philosophical discussions to modern political oratory.In ancient Greece, the Agora was a hub of debate, where scholars and philosophers would gather to argue the merits of different ideas. These discussions weren't just about winning arguments; they were about exploring truth and expanding knowledge. The Greeks believed that through the clash of opposing views, truth could be uncovered.In the East, debate took a different form in the ancient courts of China and India. There, it was often a tool of persuasion, used by officials and advisors to convince rulers of the wisdom of their policies. The art of rhetoric and debate was highly prized, and those skilled in it could rise to great heights of power and influence.The Middle Ages saw debate become a key element of religious discourse. Priests and theologians would engage in heated arguments over the finer points of doctrine, often in front of.。
辩论的历史文化 英文作文
辩论的历史文化英文作文Debates, as a form of communication, have a rich and diverse history that spans cultures and centuries. It's a way for people to express opposing viewpoints, challenge ideas, and seek truth through the clash of arguments.In ancient Greece, the agora was a lively place where citizens gathered to discuss politics, philosophy, and culture. These debates were often heated, but they also led to the birth of some of the greatest thinkers in history. Aristotle and Plato used dialogue and discussion to explore concepts of justice, virtue, and knowledge.In China, the tradition of debate dates back to the ancient philosophers like Confucius and Mozi. They debated on topics like morality, governance, and human nature. These discussions were recorded in classic texts that still influence Chinese thought today.In medieval Europe, religious debates between Catholicsand Protestants sparked the Reformation, a movement that changed the face of Christianity. These were often intense, with participants using logic, scripture, and passion to make their points.Fast-forward to modern times, debates have become a staple of political campaigns, where candidates argue over policies and platforms. But they're also found in classrooms, where students learn to construct arguments, defend positions.。
翻译研究:从规范走向描写
Origin 2
• 接下来是准备期。到了60 年代,捷克和斯洛 伐克的一些研究者,如列维(JǐvíLevy) 、米科 (FrantiÍek Miko) 和波波维奇(Anton Popovic) ,响应麦克法兰的号召,共同努力探 寻新的方法使翻译研究系统化。他们所提 出的理论构架与后来多元系统理论有很多 相似之处。
Disadvantages of Prescriptive
studies
• 它总认为自己的标准是唯一正确的,并想把它的应用范围 推广到天下所有的翻译上去(如奈达之于动态对等论), 或者总有别的什么人想这样去做(如后人之于严复的信达 雅论)。然而它却没有看到或是不愿意承认世界上实际存 在着各种各样的翻译,其中有符合这种规范性标准的,但 是,同时也有不少翻译是不符合这种标准或者不完全符合 这种标准的。规范性翻译标准的另一个不足是,它把自己 局限在语言这个狭小的圈子里,把翻译仅仅看作是一种语 言艺术。而不太考虑文化的大环境。即使涉及到了文化, 最终的目标还是落在了具体的翻译技巧上,过分专注于翻 译技巧的钻研。也许正是由于这个原因,规范性的翻译研 究总是脱离不开直译、意译之争。
Example 1
• 爱尔兰作家乔伊斯的作品《尤利西斯》出 了两个中译本。我们的评论家,从规范的 角度出发,分析哪个是直译,哪个是意译, 哪个好哪个不好。而描写翻译学派却说, 出了两个译本是件大好事,充分反映出中 国真的开放了。
Achievement
• 描写学派的功劳在于给予各种各样的翻译以正确的定位。 避免了由于规范性的翻译标准而造成的概念上的困惑以及 无谓而又无止无休的争论。描写翻译学派对翻译有两个基 本的认识。一个是翻译的“不完整性” (partiality ), 就是说你不可能把原文百分之百统统翻到译文中去。在这 个基础上导出描写学派的另一个认识,即任何翻译都经过 了译者程度不等的摆布(manipulation),因此同一个原 文会在不同的译者手里,会在不同的的时代出现许多不同 的译文。这儿要特别强调的是,描写翻译学派并不想完全 推翻传统的规范性的翻译标准。他们是想解构 (deconstruct) 传统的翻译理论, 也就是对传统的翻译 理论当中的一些不尽完善的地方提出批评,而不是想摧毁 (destroy)传统的翻译理论。
上下五千年的读书心得
上下五千年的读书心得英文回答:As I delved into the rich tapestry of "上下五千年," I was captivated by the profound wisdom and timeless lessons that emerged from the annals of Chinese history. From the enigmatic beginnings of the Three Sovereigns and Five Emperors to the rise and fall of dynasties, each chapter unfolded a breathtaking panorama of human endeavor and cultural achievement.The text's vivid descriptions transported me back in time, where I witnessed firsthand the brilliance of ancient sages like Confucius and Laozi, whose philosophies continue to shape the moral and cultural landscape of China today. I marveled at the ingenuity of inventors like Cai Lun, who revolutionized communication with the invention of paper, and the audacity of explorers like Zheng He, whose maritime expeditions extended China's influence far beyond its borders.Through the triumphs and tribulations of countless individuals and civilizations, I gained a deep appreciation for the resilience, adaptability, and enduring creativity of the Chinese people. Each era, with its unique challenges and opportunities, left an indelible mark on the collective consciousness, shaping the values, beliefs, and aspirations of generations to come.The lessons I learned from "上下五千年" are as relevant today as they were centuries ago. The importance of education, the pursuit of virtue, and the harmonious coexistence of humanity and nature are themes that resonate with me deeply. As we navigate the complexities of the modern world, I believe that these timeless principles can continue to guide us toward a brighter and more sustainable future.中文回答:潜心研读《上下五千年》,我仿佛穿越时空,置身于中国历史的浩瀚画卷中,领略了中华文明的博大精深和源远流长。
历史唯物主义辩证法英文
历史唯物主义辩证法英文English:Historical materialism, also known as the materialist conception of history, is a methodological approach to the study of human history that focuses on the role of material conditions and economic factors in shaping societal development. Developed by Karl Marx and Friedrich Engels, historical materialism argues that the driving force behind historical change is the struggle between different social classes over the means of production. This approach emphasizes the importance of understanding the economic base (such as the mode of production and property relations) in order to comprehend the political, social, and cultural superstructure that arises from it. Furthermore, historical materialism posits that history is characterized by a dialectical process in which contradictions and conflicts within society propel it forward towards new stages of development. By analyzing the underlying material forces at play, historical materialism seeks to uncover the patterns and laws that govern historical change, allowing for a more nuanced understanding of the past and the present.中文翻译:历史唯物主义,也被称为历史唯物主义概念,是一种研究人类历史的方法论,重点关注物质条件和经济因素在塑造社会发展中的作用。
历史类书籍推荐书目观后感
历史类书籍推荐书目观后感## Book Recommendations for History Buffs.1. _Sapiens: A Brief History of Humankind_ by Yuval Noah Harari.This groundbreaking book explores the history of humanity from our origins as nomadic hunter-gatherers to the complex societies we inhabit today. Harari's unique perspective and thought-provoking insights will challenge your assumptions and deepen your understanding of humanity's journey.2. _Guns, Germs, and Steel: The Fates of Human Societies_ by Jared Diamond.This Pulitzer Prize-winning work examines the factors that have shaped the development of different human societies around the world. Diamond argues that geography, climate, and access to resources have played a decisiverole in shaping human history.3. _A People's History of the United States_ by Howard Zinn.This classic work provides a counter-narrative to traditional American history textbooks. Zinn focuses on the experiences of marginalized groups such as workers, women, and minorities, shedding light on the often-ignored aspects of our nation's past.4. _The Rise and Fall of the Third Reich_ by William L. Shirer.This comprehensive account of Nazi Germany is a must-read for anyone interested in understanding the horrors of the Holocaust and the lessons we can learn from history. Shirer's meticulous research and firsthand accounts provide a chilling glimpse into the depths of human depravity.5. _The Fate of Rome: Climate, Disease, and the End of an Empire_ by Kyle Harper.This innovative work explores the environmental factors that contributed to the decline and fall of the Roman Empire. Harper argues that climate change, disease, and other environmental stressors played a significant role in shaping the empire's fate.6. _The Silk Roads: A New History of the World_ by Peter Frankopan.This sweeping narrative traces the history of the Silk Roads, the ancient network of trade routes that connected East and West. Frankopan's work provides a fresh perspective on global history and challenges traditional Eurocentric narratives.7. _The Great Transformation: The Beginnings of Our Modern World_ by Karl Polanyi.This classic work examines the social, economic, and political transformations that occurred in Europe and North America during the 18th and 19th centuries. Polanyi arguesthat these transformations were not inevitable but rather the result of specific historical circumstances.8. _The Gulag Archipelago_ by Aleksandr Solzhenitsyn.This harrowing account of life in Soviet labor camps is a powerful indictment of totalitarianism. Solzhenitsyn's firsthand experiences provide a chilling glimpse into the horrors of political oppression and the indomitable spirit of those who resist it.## 中文回答:书籍推荐观后感。
历史是什么?--一种新实证主义的思考
卡尔·贝克尔(Car L. Becker)1931年12月 就任美国历史学会主席时的演说以“人人都是 他自己的历史学家”为题,后来成为他的一部论 集的总标题。这篇演说在与其同时代的亚洲历 史学家中并没有产生什么反响,但是却在大约
二、关于历史的类卡尔定义
卡尔的混淆带有普遍性,因此需要检视一 下卡尔论说出现前后的其他一些相关的说法。 英国学者布莱德雷(Francis Herbert Bradley)曾经 说过:“一切事实都是根据推论而得出的结论或 理论”。6这句话常被单独引出,但是如果这样来 理解“事实”,就意味着“一切事实”都仅仅存在 于判断或知识范围,人类判断或知识不曾涉及
历史学虽然在希罗多德时代就已经在西方 文明中形成典范著作,其后绵延不绝,但是直至 19世纪初期以前,历史学在西方知识体系中地 位却是模糊的。是19世纪的历史学家在现代学 科体系的框架中为之争得了作为一个独立学科
1 新实证主义历史学指融汇传统实证主义历史学与19世纪后期 以来各种相关反思而形成的历史研究观念。其核心主张包括承 认历史的客观性和可认知性,同时克服旧实证主义历史学夸大 历史研究过程客观性的倾向,坚持历史学家的主要工作是依据 证据尽量认知已然事实,承认理论、价值立场在历史研究中发 挥重要作用但反对因理论或价值立场故意忽视或曲解证据,主 张不对史料做过度诠释,不追求将历史学变为其他学。参看赵 轶峰:《历史研究的新实证主义诉求》,《史学月刊》,2018年第2 期。 2 陈新:《论历史、历史学与历史意识》,《学术研究》,1998年第8 期。
A Brief History of AGN
a r X i v :a s t r o -p h /9903401v 1 25 M a r 1999Submitted to P.A.S.PA Brief History of AGNGregory A.ShieldsDepartment of Astronomy,University of Texas,Austin,TX 78712ABSTRACT Astronomers knew early in the twentieth century that some galaxies have emission-line nuclei.However,even the systematic study by Seyfert (1943)was not enough to launch active galactic nuclei (AGN)as a major topic of astronomy.The advances in radio astronomy in the 1950s revealed a new universe of energetic phenomena,and inevitably led to the discovery of quasars.These discoveries demanded the attention of observers and theorists,and AGN have been a subject of intense effort ever since.Only a year after the recognition of the redshifts of 3C 273and 3C 48in 1963,the idea of energy production by accretion onto a black hole was advanced.However,acceptance of this idea came slowly,encouraged by the discovery of black hole X-ray sources in our Galaxy and,more recently,supermassive black holes in the center of the Milky Way and other galaxies.Many questions remain as to the formation and fueling of the hole,the geometry of the central regions,the detailed emission mechanisms,the production of jets,and other aspects.The study of AGN will remain a vigorous part of astronomy for the foreseeable future.Subject headings:Galaxies:Active –Galaxies:Quasars:General –Galaxies:Seyfert1.INTRODUCTIONAlthough emission lines in the nuclei of galaxies were recognized at the beginning of the twentieth century,a half century more would pass before active galactic nuclei (AGN)became a focus of intense research effort.The leisurely pace of optical discoveries in the first half of the century gave way to the fierce competition of radio work in the 1950s.The race has never let up.Today,AGN are a focus of observational effort in every frequency band from radio to gamma rays.Several of these bands involve emission lines as well as continuum.AGN theory centers on extreme gravity and black holes,among the most exotic concepts of modern astrophysics.Ultrarelativistic particles,magnetic fields,hydrodynamics,and radiative transfer all come into play.In addition,AGN relate to the question of galactic evolution in general.For most of the time since the recognition of quasar redshifts in 1963,these objects have reigned as themost luminous and distant objects in the Universe.Their use as probes of intervening matter on cosmic scales adds a further dimension to the importance of AGN.For all these reasons,the enormous effort to describe and explain AGN in all their variety and complexity is quite natural.We are far from having a detailed and certain understanding of AGN.However,the working hypothesis that they involve at their core a supermassive black hole producing energy by accretion of gas has little serious competition today.If this picture is confirmed,then the past decade may be seen as a time when AGN research shifted from guessing the nature of AGN to trying to prove it.Although the story is notfinished,this seems a good time to take stock of the progress that has been made.The present short summary is intended to give students of AGN an account of some of the key developments in AGN research.The goal is to bring the story to the point where a contemporary review of some aspect of AGN might begin its detailed discussion.Thus,various threads typically are followed to a significant point in the1980s.I have attempted to trace the important developments without excessive technical detail,relying on published sources,my own recollections,and conversations with a number of researchers.The focus is on the actual active nucleus.Fascinating aspects such as intervening absorption lines,statistical surveys,and links to galactic evolution receive relatively little discussion.The volume of literature is such that only a tiny fraction of the important papers can be cited.2.BEGINNINGSEarly in the twentieth century,Fath(1909)undertook at Lick Observatory a series of observations aimed at clarifying the nature of the“spiral nebulae”.A major question at the time was whether spirals were relatively nearby,gaseous objects similar to the Orion nebula,or very distant collections of unresolved stars.Fath’s goal was to test the claim that spirals show a continuous spectrum consistent with a collection of stars,rather than the bright line spectrum characteristic of gaseous nebulae.He constructed a spectrograph designed to record the spectra of faint objects,mounted it on the36-inch Crossley reflector,and guided the long exposures necessary to obtain photographic spectra of these objects.For most of his objects,Fath found a continuous spectrum with stellar absorption lines,suggestive of an unresolved collection of solar type stars.However,in the case of NGC1068,he observed that the“spectrum is composite,showing both bright and absorption lines”.The six bright lines were recognizable as ones seen in the spectra of gaseous nebulae.The bright and dark lines of NGC1068were confirmed by Slipher(1917)with spectra taken in1913at Lowell Observatory.In1917,he obtained a spectrum with a narrow spectrograph slit,and found that the emission lines were not images of theslit but rather“small disks”,i.e.,the emission was spread over a substantial rangeof wavelengths.(However,he rejected an“ordinary radial velocity interpretation”of the line widths.)During the following years,several astronomers noted the presence of nuclear emission lines in the spectra of some spiral nebulae.For example,Hubble (1926)mentioned that the relatively rare spirals with stellar nuclei show a planetary nebula type spectrum,notably NGC1068,4051,and4151.The systematic study of galaxies with nuclear emission lines began with the work of Seyfert(1943).Seyfert obtained spectrograms of6galaxies with nearly stellar nuclei showing emission lines superimposed on a normal G-type(solar-type)spectrum:NGC 1068,1275,3516,4051,4151,and7469.The two brightest(NGC1068,4151)showed “all the stronger emission lines...in planetary nebulae like NGC7027.”Seyfert attributed the large widths of the lines to Doppler shifts,reaching up to8,500km s−1 for the hydrogen lines of NGC3516and7469.The emission-line profiles differed from line to line and from object to object,but two patterns were to prove typical of this class of galaxy.The forbidden and permitted lines in NGC1068had roughly similar profiles with widths of∼3000km s−1.In contrast,NGC4151showed relatively narrow forbidden lines,and corresponding narrow cores of the permitted lines;but the hydrogen lines had very broad(7500km s−1)wings that were absent from the profiles of the forbidden lines.Seyfert contrasted these spectra with the narrow emission lines of the diffuse nebulae(H II regions)seen in irregular galaxies and in the arms of spiral galaxies.Galaxies with high excitation nuclear emission lines are now called“Seyfert galaxies”.However,Seyfert’s paper was not enough to launch the study of AGN as a major focus of astronomers’efforts.The impetus for this came from a new direction–the development of radio astronomy.Jansky(1932),working at the Bell Telephone Laboratories,conducted a studyof the sources of static affecting trans-Atlantic radio ing a rotatable antenna and a short-wave receiver operating at a wavelength of14.6m,he systematically measured the intensity of the static arriving from all directions throughout the day.From these records,he identified three types of static:(1)static from local thunderstorms,(2)static from distant thunderstorms,and(3)“a steady hiss type static of unknown origin”.The latter seemed to be somehow associated with the sun(Jansky1932).Continuing his measurements throughout the year,Jansky (1933)observed that the source of the static moved around in azimuth every24hours, and the time and direction of maximum changed gradually throughout the year in a manner consistent with the earth’s orbital motion around the sun.He inferred that the radiation was coming from the center of the Milky Way galaxy.After further study of the data,Jansky(1935)concluded that the radiation came from the entire disk of the Milky Way,being strongest in the direction of the Galactic center.Few professional astronomers took serious note of Jansky’s work,and it fell to an engineer,working at home in his spare time,to advance the subject of radio astronomy.Reber(1940a,b)built a31foot reflector in his backyard near Chicago.He published a map of the radio sky at160MHz showing several local maxima,including one in the constellation Cygnus that would prove important for AGN studies(Reber1944).He also noted that the ratio of radio radiation to optical light was vastly larger for the Milky Way than the sun.With the end of World War II,several groups of radio engineers turned their efforts to the study of radio astronomy.Notable among these were the groups at Cambridge and Manchester in England and at CSIRO in Australia.The study of discrete sources began with the accidental discovery of a small,fluctuating source in Cygnus by Hey, Parsons,and Phillips(1946)in the course of a survey of the Milky Way at60MHz. With their6degree beam,they set an upper limit of2degrees on the angular diameter of the source.The intensityfluctuations,occurring on a time scale of seconds,were proved a few years later to originate in the earth’s ionosphere;but atfirst they served to suggest that the radiation“could only originate from a small number of discrete sources”.The discrete nature of the Cygnus source was confirmed by Bolton and Stanley(1948),who used a sea-cliffinterferometer to set an upper limit of8arcmin to the width of the source.These authors deduced a brightness temperature of more than4×106K at100MHz and concluded that a thermal origin of the noise was “doubtful”.Bolton(1948)published a catalog of6discrete sources and introduced the nomenclature Cyg A,Cas A,etc.Ryle and Smith(1948)published results from a radio interferometer at Cambridge analogous to the optical interferometer used by Michelson at Mt.Wilson to measure stellar diameters.Observing at80MHz,they set an upper limit of6arcmin to the angular diameter of the source in Cygnus.Optical identifications of discrete sources(other than the sun)werefinally achieved by Bolton,Stanley,and Slee(1949).Aided by more accurate positions from sea cliffobservations,they identified Taurus A with the Crab Nebula supernova remnant(M 1);Virgo A with M87,a large elliptical galaxy with an optical jet;and Centaurus A with NGC5128,an elliptical galaxy with a prominent dust lane.The partnership of optical and radio astronomy was underway.The early1950s saw progress in radio surveys,position determinations,and optical identifications.A class of sources fairly uniformly distributed over the sky was shown by the survey by Ryle,Smith,and Elsmore(1950)based on observations with the Cambridge interferometer.Smith(1951)obtained accurate positions of four discrete sources,Tau A,Vir A,Cyg A,and Cas A.Smith’s positions enabled Baade and Minkowski(1954)to make opticalidentifications of Cas A and Cyg A in1951and1952.At the position of Cyg A,they found an object with a distorted morphology,which they proposed was two galaxies in collision.Baade and Minkowski found emission lines of[Ne V],[O II],[Ne III], [O III],[O I],[N II],and Hα,with widths of about400km s−1.The redshift of 16,830km s−1implied a large distance,31Mpc,for the assumed Hubble constant ofH0=540km s−1Mpc−1.The large distance of Cyg A implied an enormous luminosity, 8×1042erg s−1in the radio,larger than the optical luminosity of6×1042erg s−1. (Of course,these values are larger for a modern value of H0.)This period also saw progress in the measurement of the structure of radio sources. Hanbury Brown,Jennison,and Das Gupta(1952)reported results from the new intensity interferometer developed at Jodrell Bank,including a demonstration that Cyg A was elongated,with dimensions roughly2arcmin by0.5arcmin.Interferometer measurements of Cyg A by Jennison and Das Gupta(1952)showed two equal components separated by1.5arcmin that straddled the optical image,a puzzling morphology that proved to be common for extragalactic radio sources.Radio sources were categorized as‘Class I’sources,associated with the plane of the Milky Way,and‘Class II’sources,isotropically distributed and possibly mostly extragalactic(e.g.,Hanbury Brown1959).Some of the latter had very small angular sizes,encouraging the view that many were“radio stars”in our Galaxy.Morris, Palmer,and Thompson(1957)published upper limits of12arcsec on the size of3class II sources,implying brightness temperatures in excess of2×107K.They suggested that these were extragalactic sources of the Cyg A type.Theoretically,Whipple and Greenstein(1937)attempted to explain the Galactic radio background measured by Jansky in terms of thermal emission by interstellar dust,but the expected dust temperatures were far too low to give the observed radio brightness.Reber(1940a)considered free-free emission by ionized gas in the interstellar medium.This process was considered more accurately by Henyey and Keenan(1940)and Townes(1947),who realized that Jansky’s brightness temperature of∼105K could not be reconciled with thermal emission from interstellar gas believed to have a temperature∼10,000K.Alfv´e n and Herlofson(1950)proposed that“radio stars”involve cosmic ray electrons in a magneticfield emitting by the synchrotron process.This quickly led Kiepenheuer(1950)to explain the Galactic radio background in terms of synchrotron emission by cosmic rays in the general Galactic magneticfield.He showed order-of-magnitude agreement between the observed and predicted intensities,supported by a more careful calculation by Ginzburg(1951). The synchrotron explanation became accepted for extragalactic discrete sources by the end of the1950’s.The theory indicated enormous energies,up to∼1060ergs for the “double lobed”radio galaxies(Burbidge1959).The confinement of the plasma in these lobes would later be attributed to ram pressure as the material tried to expand into the intergalactic medium(De Young and Axford1967).A mechanism for production of bipolarflows to power the lobes was given by the“twin exhaust model”of Blandford and Rees(1974).The third Cambridge(3C)survey at159MHz(Edge et al.1959)was followed by the revised3C survey at178MHz(Bennett1962).Care was taken to to minimize the confusion problems of earlier surveys,and many radio sources came to be known bytheir3C numbers.These and the surveys that soon followed provided many accurate radio positions as the search for optical identifications accelerated.(AGN were also discovered in optical searches based on morphological“compactness”[Zwicky1964]and strong ultraviolet continuum[Markarian1967]and later infrared and X-ray surveys.) Source counts as a function offlux density(“log N–log S”)showed a steeper increase in numbers with decreasingflux density than expected for a homogeneous,nonevolving universe with Euclidean geometry(e.g.,Mills,Slee,and Hill1958;Scott and Ryle 1961).This was used to argue against the“steady state”cosmology(Ryle and Clark 1961),although some disputed such a conclusion(e.g.,Hoyle and Narlikar1961).3.THE DISCOVERY OF QUASARSMinkowski’s studies of radio galaxies culminated with identification of3C295with a member of a cluster of galaxies at the unprecedented redshift of0.46(Minkowski 1960).Allan Sandage of the Mt.Wilson and Palomar Observatories and Maarten Schmidt of the California Institute of Technology(Caltech)then took up the quest for optical identifications and redshifts of radio galaxies.Both worked with Thomas A.Matthews,who obtained accurate radio positions with the new interferometer at the Owens Valley Radio Observatory operated by Caltech.In1960,Sandage obtained a photograph of3C48showing a16m stellar object with a faint nebulosity.The spectrum of the object showed broad emission lines at unfamiliar wavelengths,and photometry showed the object to be variable and to have an excess of ultraviolet emission compared with normal stars.Several other apparently star-like images coincident with radio sources were found to show strange,broad emission lines.Such objects came to be known as quasi-stellar radio sources(QSRS),quasi-stellar sources (QSS),or quasars.Sandage reported the work on3C48in an unscheduled paperin the December,1960,meeting of the AAS(summarized by the editors of Sky and Telescope[Matthews et al.1961]).There was a“remote possibility that it may be a distant galaxy of stars”but“general agreement”that it was“a relatively nearby star with most peculiar properties.”The breakthrough came on February5,1963,as Schmidt was pondering the spectrum of the quasar3C273.An accurate position had been obtained in August, 1962by Hazard,Mackey,and Shimmins(1963),who used the210foot antenna at the Parkes station in Australia to observe a lunar occultation of3C273.From the precise time and manner in which the source disappeared and reappeared,they determined that the source had two components.3C273A had a fairly typical class II radio spectrum,Fν∼ν−0.9;and it was separated by20seconds of arc from component‘B’,which had a size less than0.5arcsec and a“most unusual”spectrum,fν∼ν0.0. Radio positions B and A,respectively,coincided with those of a13m star like object and with a faint wisp or jet pointing away from the star.Atfirst suspecting the stellarobject to be a foreground star,Schmidt obtained spectra of it at the200-inch telescope in late December,1962.The spectrum showed broad emission lines at unfamiliar wavelengths,different from those of3C48.Clearly,the object was no ordinary star. Schmidt noticed that four emission lines in the optical spectrum showed a patternof decreasing strength and spacing toward the blue,reminiscent of the Balmer series of hydrogen.He found that the four lines agreed with the expected wavelengths of Hβ,Hγ,Hδ,and Hǫwith a redshift of z=0.16.This redshift in turn allowed him to identify a line in the ultraviolet part of the spectrum with Mg IIλ2798.Schmidt consulted with his colleagues,Jesse L.Greenstein and J.B.Oke.Oke had obtained photoelectric spectrophotometry of3C273at the100-inch telescope,which revealed an emission-line in the infrared atλ7600.With the proposed redshift,this feature agreed with the expected wavelength of Hα.Greenstein’s spectrum of3C48with a redshift of z=0.37,supported by the presence of Mg II in both objects.The riddle of the spectrum of quasars was solved.These results were published in Nature six weeks later in adjoining papers by Hazard et al.(1963);Schmidt(1963);Oke(1963);and Greenstein and Matthews (1963).The objects might be galactic stars with a very high density,giving a large gravitational redshift.However,this explanation was difficult to reconcile with the widths of the emission lines and the presence of forbidden lines.The“most direct and least objectionable”explanation was that the objects were extragalactic,with redshifts reflecting the Hubble expansion.The redshifts were large but not unprecedented;that of3C48was second only to that of3C295.The radio luminosities of the two quasars were comparable with those of Cyg A and3C295.However,the optical luminosities were staggering,“10-30times brighter than the brightest giant ellipticals”;and the radio surface brightness was larger than for the radio galaxies.The redshift of3C273implied a velocity of47,400km s−1and a distance of about500Mpc(forH0≈100km s−1Mpc−1).The nuclear region would then be less than1kpc in diameter.The jet would be about50kpc away,implying a timescale greater than105 years and a total energy radiated of at least1059ergs.Before the redshift of3C273was announced,Matthews and Sandage(1963)had submitted a paper identifying3C48,3C196and3C286with stellar optical objects. They explored the popular notion that these objects were some kind of Galactic star, arguing from their isotropic distribution on the sky and lack of observed proper motion that the most likely distance from the sun was about100pc.The objects had peculiar colors,and3C48showed light variations of0.4mag.In a section added following the discovery of the redshifts of3C273and3C48,they pointed out that the size limit of ≤0.15pc implied by the optical light variations was important in the context of the huge distance and luminosity implied by taking the redshift to result from the Hubble expansion.A detailed analysis of3C48and3C273was published by Greenstein and Schmidt(1964).They considered explanations of the redshift involving(1)rapid motion of objects in or near the Milky Way,(2)gravitational redshifts,and(3)cosmological redshifts.If3C273had a transverse velocity comparable with the radial velocity implied by its redshift,the lack of an observed proper motion implied a distanceof at least10Mpc(well beyond the nearest galaxies).The corresponding absolute magnitude was closer to the luminosity of galaxies than stars.The four quasars with known velocities were all receding;and accelerating a massive,luminous object to an appreciable fraction of the speed of light seemed difficult.Regarding gravitational redshifts,Greenstein and Schmidt argued that the widths of the emission lines required the line emitting gas to be confined to a small fractional radius around the massive object producing the redshift.The observed symmetry of the line profiles seemed unnatural in a gravitational redshift model.For a1M⊙object,the observed Hβflux implied an electron density N e≈1019cm−3,incompatible with the observed presence of forbidden lines in the spectrum.The emission-line constraint,together with a requirement that the massive object not disturb stellar orbits in the Galaxy,required a mass≥109M⊙.The stability of such a“supermassive star”seemed doubtful in the light of theoretical work by Hoyle and Fowler(1963a),who had examined such objects as possible sources for the energy requirements of extragalactic radio sources. Adopting the cosmological explanation of the redshift,Greenstein and Schmidt derived radii for a uniform spherical emission-line region of11and1.2pc for3C48and3C273, respectively.This was based on the Hβluminosities and electron densities estimated from the Hβ,[O II],and[O III]line ratios.Invoking light travel time constraints based on the observed optical variability(Matthews and Sandage1963;Smith and Hoffleit1963),they proposed a model in which a central source of optical continuum was surrounded by the emission-line region,and a still larger radio emitting region. They suggested that a central mass of order109M⊙might provide adequate energy for the lifetime of≥106yr implied by the jet of3C273and the nebulosity of3C 48.This mass was about right to confine the line emitting gas,which would disperse quickly if it expanded at the observed speeds of1000km s−1or more.Noting that such a mass would correspond to a Schwarzschild radius of∼10−4pc,they observed that“It would be important to know whether continued energy and mass input from such a‘collapsed’region are possible”.Finally,they noted that there could be galaxies around3C48and3C273hidden by the glare of the nucleus.Many features of this analysis are recognizable in current thinking about AGN.The third and fourth quasar redshifts were published by Schmidt and Matthews (1964),who found z=0.425and0.545for3C47and3C147,respectively.Schmidt (1965)published redshifts for5more quasars.For3C254,a redshift z=0.734, based on several familiar lines,allowed the identification of C III]λ1909for thefirst time.This in turn allowed the determination of redshifts of1.029and1.037fromλ1909andλ2798in3C245and CTA102,respectively.(CTA is a radio source listfrom the Caltech radio observatory.)For3C287,a redshift of1.055was found from λ1909,λ2798,and anotherfirst,C IVλ1550.Finally,a dramatically higher redshift of2.012was determined for3C9on the basis ofλ1550and thefirst detection of the Lymanαline of hydrogen atλ1215.The redshifts were large enough that the absolute luminosities depended significantly on the cosmological model used.Sandage(1965)reported the discovery of a large population of radio quiet objects that otherwise appeared to resemble quasars.Matthews and Sandage(1963)had found that quasars showed an“ultraviolet excess”when compared with normal stars on a color-color(U-B,B-V)diagram.This led to a search technique in which exposures in U and B were recorded on the same photographic plate,with a slight positionaloffset,allowing rapid identification of objects with strong ultraviolet continua.Sandage noticed a number of such objects that did not coincide with known radio sources. These he called“interlopers”,“blue stellar objects”(BSO),or“quasi-stellar galaxies”(QSG).1Sandage found that at magnitudes fainter than15,the UV excess objects populated the region occupied by quasars on the color-color diagram,whereas brighter objects typically had the colors of main sequence stars.The number counts of the BSOs as a function of apparent magnitude also showed a change of slope at∼15m, consistent with an extragalactic population of objects at large redshift.Spectra showed that many of these objects indeed had spectra with large redshifts,including z=1.241 for BSO1.Sandage estimated that the QSGs outnumbered the radio loud quasars by a factor∼500,but this was reduced by later work(e.g.,Kinman1965;Lynds and Villere1965).The large redshifts of QSOs immediately made them potential tools for the study of cosmological questions.The rough similarity of the emission-line strengths of QSOs to those observed,or theoretically predicted,for planetary nebulae suggested that the chemical abundances were roughly similar to those in our Galaxy(Sklovskii1964; Osterbrock and Parker1966).Thus these objects,suspected by many astronomers to lie in the nuclei of distant galaxies,had reached fairly“normal”chemical compositions when the Universe was considerably younger than today.The cosmological importance of redshifts high enough to make Lαvisible was quickly recognized.Hydrogen gas in intergalactic space would remove light from the quasar’s spectrum at the local cosmological redshift,and continuously distributed gas would erase a wide band of continuum to the short wavelength side of the Lαemission line(Gunn and Peterson1965;Scheuer1965).Gunn and Peterson set a tight upper limit to the amount of neutral hydrogen in intergalactic space,far less than the amount that would significantly retard the expansion of the Universe.The study of discrete absorption features in quasar spectra also began to develop.An unidentified sharp line was observed in the spectrum of3C48by Greenstein and Schmidt(1964).Sandage(1965)found that theλ1550emission line of BSO1was “bisected by a sharp absorption feature”.Thefirst quasar found with a rich absorption spectrum was3C191(Burbidge,Lynds,and Burbidge1966;Stockton and Lynds 1966).More than a dozen sharp lines were identified,including Lαand lines of C II,III,and IV and Si II,III,and IV.A rich set of narrow absorption lines was also observed in the spectrum of PKS0237-23,whose emission-line redshift,z=2.223, set a record at the time.Arp,Bolton,and Kinman(1967)and Burbidge(1967a) respectively proposed absorption line redshifts of z=2.20and1.95for this object,but each value left many lines without satisfactory identifications.It turned out that both redshifts were present(Greenstein and Schmidt1967).All these absorption systems had z abs<z em.They could be interpreted as intervening clouds imposing absorption spectra at the appropriate cosmological redshift,as had been anticipated theoretically(Bahcall and Salpeter1965).Alternatively,they might represent material expelled from the quasar,whose outflow velocity is subtracted from the cosmological velocity of the QSO.However,PKS0119-04was found to have z abs> z em,implying material that was in some sense falling into the QSO from the near side with a relative velocity of103km s−1(Kinman and Burbidge1967).Today,a large fraction of the narrow absorption lines with z abs substantially less than z em are believed to result from intervening material.This includes the so-called“Lyman alpha forest”of closely spaced,narrow Lαlines that punctuate the continuum to the short wavelength side of the Lαemission line,especially in high redshift QSOs.The study of intervening galaxies and gas clouds by means of absorption lines in the spectra of background QSOs is now a major branch of astrophysics.A different kind of absorption was discovered in the spectrum of PHL5200by Lynds(1967).This object showed broad absorption bands on the short wavelength sides of the Lα,N Vλ1240,and C IVλ1550emission lines,with a sharp boundary between the emission and absorption.Lynds interpreted this in terms of an expanding shell of gas around the central object.Seen in about10percent of radio quiet QSOs (Weymann et al.1991),these broad absorption lines(BALs)are among the many dramatic but poorly understood aspects of AGN.The huge luminosity of QSOs,rapid variability,and implied small size caused some astronomers to question the cosmological nature of the redshifts.Terrell(1964) considered the possibility that the objects were ejected from the center of our galaxy. Upper limits on the proper motion of3C273,together with a Doppler interpretation of the redshift,then implied a distance of at least0.3Mpc and an age at least5 million years.Arp(1966),pointing to close pairs of peculiar galaxies and QSOs on the sky,argued for noncosmological redshifts that might result from ejection from the peculiar galaxies at high speeds or an unknown cause.Setti and Woltjer(1966) noted that ejection from the Galactic center would imply for the QSO population an。
History of Calculus
Limits
Evaluating Limits Algebraically; Limits and Continuity; Limits at infinity;
Differentiation
Definition of the Derivative;Product and Quotient Rules;The Chain Rule;Higher Derivatives;Derivative of Trigonometric Functions,General exponential and Logarithmic Functions,Inverse Functions;
Leibniz 1646-1716
牛顿在1665年11月发明“正流数术”(微分法),
次年5月又建立了“反流数术”(积分法).1666年10
月,牛顿将前两年的研究成果整理成一篇总结性论 文,但他没有拿去发表。 牛顿将自古希腊以来求解无限小问题的各种 特殊技巧统一为两类普遍的算法——正、反流数 术亦即微分与积分,并证明了二者的互逆关系, 从而将这两类运算统一成整体。这是他超越前人 的功绩,正是在这样的意义下,我们说牛顿发明 了微积分。
无疑,牛顿创立了微积分。虽然莱布尼茨曾
收到过牛顿关于微积分工作的信件,但是他的工
作与牛顿的工作有明显的不同之处,并且有其突
出之处。牛顿的出发点是力学,莱布尼茨的出发
点是几何学;牛顿的符号凌乱,除了他本人以外,
其他人甚难接受,莱布尼茨的符号系统明了,今
日微分学,积分学仍然沿用他当时的记号。 公平地说,在微积分创立方面,牛顿与莱布 尼茨功绩相当。牛顿应与莱布尼茨分享创立微积 分的荣誉。
Outline for AP Calculus AB
外文翻译--衍生工具,风险和监管混乱或信心?
本科毕业论文(设计)外文翻译题目Derivatives, risk and regulation:chaos or confidence?外文出处International Journal of Bank Marketing 外文作者R. Dixon, R.K. Bhandari原文:Derivatives, risk and regulation:chaos or confidence?IntroductionThe paper begins with an examination of derivatives: what they are and where there are calls for their use to be regulated in both UK and global capital markets and economies. The forms regulation could take, as proposed by the Securities and Futures Authority (SFA), are considered. The paper then reviews the principal concerns of regulatory bodies and concludes with a look at the latest developments in trading and regulation. Recommendations were submitted to players in the capital markets and their comments sought by means of telephone interviews. These comments are listed. The principal aim of regulation – the reduction of any market volatility – is discussed and some suggested regulatory instruments evaluated.What are derivatives?Risk management techniques are primarily structured to reduce risk. Derivative instruments, used as risk management tools, have potential to be more risky than the underlying cash instrument, though the exchanges on which many derivative instruments are traded help to spread risk. When two companies do a deal, a clearing house, usually owned and operated by ex change members’ firms, steps in to become the counterparty to both trades. If one party defaults, the other will not suffer unless the default is so huge as to exhaust the exchange’s own capital reserves. However, the over-the-counter (OTC) markets do not have this concept of a central clearing house, and it is quite possible that risk management strategies may prove to be fatal in the event of adverse price movement. Combinations of factors –like new methods and risks, the lack of a relevant framework for keeping records, and the focus of derivatives’ activity among only a few large players in the market – could result in a precarious situation. Nevertheless, as de Boissieu states:Derivatives provide an important and efficient means of risk management for financial and non-financial firms. In 1993 the Commodity Futures Trading Commission (CFTC) reported that: By any measure, the worldwide growth of the over-the-counter (OTC) markets in derivative products during the past decade has been extraordinary.The fact of their growth is well-documented and the G-30 (Group of Thirty) describes derivatives as a “major financial activity” (G- 30, 1993).Contracts described as “derivatives” include futures, options and swaps, although the underlying principle of derivative contracts is based on futures and options. Futures contracts typically deal in large volumes and thus pose significant risk in the case of default. The larger a futures transaction, the greater the risk of default. The counterparties to such large risks therefore tend to be corporations, financial institutions, investment banks or sovereign entities. The growth in the use of derivative instruments has led to the concentration of risk management in large financial institutions –one of the factors which has contributed to the set of circumstances leading to the current debate on the subject.RegulationFinancial markets play a prominent role in a nation’s economy; consequently, governments have deemed it necessary to regulate them. Regulation may function as external control, self-control or internal control, or in combination. There is likely to be an optimal combination for a particular set of circumstances, but the G-30 (1993) recommended that internal control procedures be given the greatest weight.Phillips and Zecher (1981) argued that two economic theories of regulation provide the basis for economic analysis of disclosure, fixed commission rates and market structure. These are the market failure theory and public choice theory: The market theory identifies various market failures or deviations from fully competitive marketplace and sets goals for regulatory programs that approximate free market solutions. The public choice theory utilizes an extended notion of market behavior asit expresses itself through the political system (Phillips and Zecher, 1981).Market operators prefer internal control, at least in theory, but de Boisseau (1995) points out that: the necessity of some international coordination in order to limit the scope for regulatory and supervision arbitrage and competitive deregulation in the field of prudential policy has led to rely [sic] to a great extent on external regulation and the harmonisation of national rules.In the UK the Securities and Futures Authority (SFA) regulates firms operating in financial derivatives. The SFA divides risk into three main categories:1 primary requirement;2 counterparty risk requirements; and3 position risk requirements.Latest developmentsFinancial intermediaries have criticized legislative calls for tighter regulation. Their argument is that derivatives trading is an essential feature of the modern financial system. Rather than increasing risk it helps to quantify and manage risk more effectively.Regulators warn, however, that the failure of any of these financial intermediaries could undermine stability in simultaneously international markets which could lead to a chain of market withdrawals, possible firm failures and a systemic crisis. There are two key reports in this area which draw together the opposing views of regulation: Recent Developments in International Interbank Relations by the G-10 Working Group (1992) and Derivatives: Practices and Principles by the G-30 Group (1993).The G-10 (1992) report, covering 63 intermediaries (55 banks, seven securities houses and one insurance firm) in G-10 (Belgium, Canada, France, Germany, Italy, Japan, Luxembourg, The Netherlands, Sweden, Switzerland, UK, USA) countries made the following key points (among others) which highlight the views of key participants in international financial markets:The Funding Markets (including the international deposits and CDs market, thecommercial paper market, the repo market, the medium-note market, the corporate note and bond market, and the bank investment contracts and bank lending facilities market).Most participants agree that the inter-bank deposit market is on a decline particularly since 1990. They indicated three reasons for this:1 increased concern about counterparty credit risk has led to cutting credit lines.2 greater emphasis on the efficient use of capital due to Basle Capital Accord.3 increased use of derivatives and other offbalance sheet instruments to hedge or manage market risk in lieu of the interbank deposit market.In macro-terms, these have affected activity in the following ways:• Excessive concern about counterparty credit risk has forced players to deal with highly rated institutions leading to greater concentration of funds.• The Basle Capital Accord explicitly link s credit exposures to capital requirements resulting in greater selectivity in credit exposures. The accord reinforces other market forces which emphasize competitiveness through efficiency. This has led banks to reassess the capital efficiency of its risk taking and hedging positions with the result that many have reduced dependence on the inter-bank deposit market and have increasingly used off-balance sheet instruments to manage market risks.• Alternative funding arrangements have reduced dependence on inter-bank deposit markets because: first, the cost of funds are lower in other funding markets than interbank deposit markets; and second, the inter-bank markets are highly susceptible to the risk of liquidity problems in the event of degradation of a pa rticipant’s credit rating.Furthermore, banks and securities houses are increasingly dealing with pension funds, insurance firms and money market mutual funds. This could cause problems in that these investors have very aggressive trading strategies and stringent performance criteria; they tend to react sharply to interest rate movements. Their reactions tend to exaggerate price movements and reinforce volatility. For this reason, firms that obtain a significant share of their funding from such investors could be susceptible to severe cash liquidity problems in the event of a credit rating degradation.Favourable developments from increased linkages among financial intermediaries have given participants a greater choice of instruments. In addition, inter-linkages between different markets have enabled participants to use a wide range of financial instruments for hedging and position taking activities. The increased choice and interlinkages of markets and instruments have enabled a wider variety of instruments to be used for a wider range of purposes.However, under some circumstances stronger inter-linkages can be a source of concern. For example, price movement uncertainty or price volatility can be reflected rapidly from one market to another. Empirical evidence suggests that futures and spot prices move largely in unison and that for some instruments the intra-day prices for futures leads the underlying spot market by about 20 to 45 minutes.Also, certain complex instruments like options-based derivatives are typically not hedged by an equal or opposite position; instead they need to be hedged continuously through a series of transactions in the underlying market. This process is referred to as dynamic hedging and it creates a high price correlation between the underlying cash market and the derivative instrument.Although arbitrage between markets increases market integration, arbitrageurs tend to presume that liquidity in all linked markets is deep, whereas the reality may be the opposite. For instance, during the turbulent moments of 19 October 1987, the stronger players appeared to have overreacted to information, this created liquidity problems in the stock markets leading to a disastrous domino effect.Another aspect of strong linkages is that banks and other financial intermediaries are increasingly active in the same markets. Strengthened linkages or interdependency within the inter-bank and wholesale markets imply that the distinction between banking industry and financial intermediaries in general, has become less meaningful. It is, therefore, inappropriate to consider systemic risk in the context of the banking system alone.Increasingly, concentration of activity is primarily restricted to top-rated financial intermediaries. This may be attributed due to:• huge capital reserves that enable acceptance of significant exposure;• the necessary infrastructure and technical expertise to assess and manage risk globally is in place;• significant economies of scale. Although greater concentration has signi ficant effects on market liquidity it does not necessarily result in increased liquidity. If most key participants or market-makers are unwilling to risk their capital, i.e. if the capital exposed by all the market-makers is negligible compared to the overall trading volume in the overall market, and one key participant is dedicated to market-making by taking large positions, there is a probability that such a firm may lose its positions, rapidly leading to its failure and a reduction in overall liquidity.Finally, a higher degree of concentration in the wholesale markets implies that large exposures are being incurred by a few key market participants. Although the creditworthiness of such institutions is very high and the probability of default very low, any deterioration in credit rating of any one such key player would result in devastating impact on market stability.To counter the new challenge posed by the changes in the levels of risks facing the financial environment, both the Promisel and G-30 reports have presented their recommendations for measuring and managing risk.ConclusionThe fragmented regulatory structure in the financial markets has not developed sufficiently to deal with the fastgrowing complexities of derivative instruments. As a result market making and risk taking positions are increasingly concentrated with a few key players, some of which are completely unregulated. The failure of any financial intermediary poses a possible threat of systemic risk to global financial markets. The fears of legislators run parallel to the more reassuring verdict of authoritative industry players in the G-30 report. On the other hand, the dramatic growth and recent losses in derivative activities such as Metallgesellschaft, Kashima Oil, P&G, Glaxo and Barings are unquestionably eye-catching.The major players do not seem to reject the Promisel report recommendations out of hand. This could indicate common ground. However, financial markets operatein a global framework, so to be effective, regulations will have to have force and be enforceable globally. The starting point in making this possible would be better international harmonization of accounting, financial disclosures (or increasing transparency) and trading practices. One way to achieve this would be for supervisory and regulating authorities to set up or become an internationally recognized body to monitor the trading activities in international capital markets. The volatile elements of the markets require the regulator to do more than simply monitor and report. The new international body should have the authority to set accounting, financial disclosures, trading and regulating standards appropriate to any form of derivative trading.Institutions which employ the talents of market players also need protection, as the Barings collapse has indicated. Barings met all currently relevant criteria on a weekly basis but was still vulnerable. There is a need for regulations in theory and practice that continues to allow effective management of risk without resulting in greater institutional and systemic risk which adversely affects not only global institutions but national and global economies. The implementation of the recommendations from the Promisel and G30 reports would be a start.Source: R. Dixon, R.K. Bhandari. Derivatives, risk and regulation: chaos or confidence? [J].International Journal of Bank Marketing.2007(3)译文:衍生工具,风险和监管混乱或信心?引言本文首先对衍生品进行了考察:他们是什么和在英国和全球资本市场和经济中,它们在什么领域使用需要受到管制。
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A Brief History of DerivativesThe history of derivatives is quite colorful and surprisingly a lot longer than most people think. A few years ago I compiled a list of the events that I thought shaped the history of derivatives. That list is published in its entirety in the Winter1995 is sue of Derivatives Quarterly. What follows here is a snapshot of the major events that I think form the evolution of derivatives.I would like to first note that some of these stories are controversial. Do they really involve derivatives? Or do the minds of people like myself and others see derivatives everywhere?To start we need to go back to the Bible. In Genesis Chapter 29, believed to be about the year 1700 B.C., Jacob purchased an option costing him seven years of labor that granted him the right to marry Laban's daughter Rachel. His prospective father-in-law, however, reneged, perhaps making this not only the first derivative but the first default on a derivative. Laban required Jacob to marry his older daughter Leah. Jacob married Leah, but because he preferred Rachel, he purchased another option, requiring seven more years of labor, and finally married Rachel, bigamy being allowed in those days. Jacob ended up with two wives, twelve sons, who became the patriarchs of the twelve tribes of Israel, and a lot of domestic friction, which is not surprising. Some argue that Jacob really had forward contracts, which obligated him to the marriages but that does not matter. Jacob did derivatives, one way or the other. Around 580 B.C., Thales the Milesian purchased options on olive presses and made a fortune off of a bumper crop in olives. So derivatives were around before the time of Christ.The first exchange for trading derivatives appeared to be the Royal Exchange in London, which permitted forward contracting. The celebrated Dutch Tulip bulb mania, which you can read about in Extraordinary Popular Delusions and the Madness of Crowds by Charles Mackay, published 1841 but still in print, was characterized by forward contracting on tulip bulbs around 1637. The first "futures" contracts are generally traced to the Yodoya rice market in Osaka, Japan around 1650. These were evidently standardized contracts, which made them much like today's futures, although it is not known if the contracts were marked to market daily and/or had credit guarantees. Probably the next major event, and the most significant as far as the history of U. S. futures markets, was the creation of the Chicago Board of Trade in 1848. Due to its prime location on Lake Michigan, Chicago was developing as a major center for the storage, sale, and distribution of Midwestern grain. Due to the seasonality of grain, however, Chicago's storage facilities were unable to accommodate the enormous increase in supply that occurred following the harvest. Similarly, its facilities were underutilized in the spring. Chicago spot prices rose and fell drastically. A group of grain traders created the "to-arrive" contract, which permitted farmers to lock in the price and deliver the grain later. This allowed the farmer to store the grain either on the farm or at a storage facility nearby and deliver it to Chicago months later. These to-arrive contracts proved useful as a device for hedging and speculating on price changes. Farmers and traders soon realizedthat the sale and delivery of the grain itself was not nearly as important as the ability to transfer the price risk associated with the grain. The grain could always be sold and delivered anywhere else at any time. These contracts were eventually standardized around 1865, and in 1925 the first futures clearinghouse was formed. From that point on, futures contracts were pretty much of the form we know them today.In the mid 1800s, famed New York financier Russell Sage began creating synthetic loans using the principle of put-call parity. Sage would buy the stock and a put from his customer and sell the customer a call. By fixing the put, call, and strike prices, Sage was creating a synthetic loan with an interest rate significantly higher than usury laws allowed.One of the first examples of financial engineering was by none other than the beleaguered government of the Confederate States of America, which is sued a dual currency optionable bond. This permitted the Confederate States to borrow money in sterling with an option to pay back in French francs. The holder of the bond had the option to convert the claim into cotton, the south's primary cash crop.Interestingly, futures/options/derivatives trading was banned numerous times in Europe and Japan and even in the United States in the state of Illinois in 1867 though the law was quickly repealed. In 1874 the Chicago Mercantile Exchange's predecessor, the Chicago Produce Exchange, was formed. It became the modern day Merc in 1919. Other exchanges had been popping up around the country and continued to do so.The early twentieth century was a dark period for derivatives trading as bucket shops were rampant. Bucket shops are small operators in options and securities that typically lure customers into transactions and then flee with the money, setting up shop elsewhere. In 1922 the federal government made its first effort to regulate the futures market with the Grain Futures Act. In 1936 options on futures were banned in the United States. All the while options, futures and various derivatives continued to be banned from time to time in other countries.The 1950s marked the era of two significant events in the futures markets. In 1955 the Supreme Court ruled in the case of Corn Products Refining Company that profits from hedging are treated as ordinary income. This ruling stood until it was challenged by the 1988 ruling in the Arkansas Best case. The Best decision denied the deductibility of capital losses against ordinary income and effectively gave hedging a tax disadvantage. Fortunately, this interpretation was overturned in 1993.Another significant event of the 1950s was the ban on onion futures. Onion futures do not seem particularly important, though that is probably because they were banned, and we do not hear much about them. But the significance is that a group of Michigan onion farmers, reportedly enlisting the aid of their congressman, a young Gerald Ford, succeeded in banning a specific commodity from futures trading. To this day, the law in effect says, "you can create futures contracts on anything but onions.”In 1972 the Chicago Mercantile Exchange, responding to the now-freely floating international currencies, created the International Monetary Market, which allowed trading in currency futures. These were the first futures contracts that were not on physical commodities. In 1975 the Chicago Board of Trade created the first interest rate futures contract, one based on Ginnie Mae (GNMA) mortgages. While the contract met with initial success, it eventually died. The CBOT resuscitated it several times, changing its structure, but it never became viable. In 1975 the Merc responded with the Treasury bill futures contract. This contract was the first successful pure interest rate futures. It was held up as an example, either good or bad depending on your perspective, of the enormous leverage in futures. For only about $1,000, and now less than that, you controlled $1 million of T -bills. In 1977, the CBOT created the T -bond futures contract, which went on to be the highest volume contract. In 1982 the CME created the Eurodollar contract, which has now surpassed the T -bond contract to become the most actively traded of all futures contracts. In 1982, the Kansas City Board of Trade launched the first stock index futures, a contract on the Value Line Index. The Chicago Mercantile Exchange quickly followed with their highly successful contract on the S&P 500 index. 1973 marked the creation of both the Chicago Board Options Exchange and the publication of perhaps the most famous formula in finance, the option pricing model of Fischer Black and Myron Scholes. These events revolutionized the investment world in ways no one could imagine at that time. The Black-Scholes model, as it came to be known, set up a mathematical framework that formed the basis for an explosive revolution in the use of derivatives. In 1983, the Chicago Board Options Exchange decided to create an option on an index of stocks. Though originally known as the CBOE 100 Index, it was soon turned over to Standard and Poor's and became known as the S&P 100, which remains the most actively traded exchange-listed option.The 1980s marked the beginning of the era of swaps and other over-the-counter derivatives. Although over-the-counter options and forwards had previously existed, the generation of corporate financial managers of that decade was the first to come out of business schools with exposure to derivatives. Soon virtually every large corporation, and even some that were not so large, were using derivatives to hedge, and in some cases, speculate on interest rate, exchange rate and commodity risk. New products were rapidly created to hedge the now-recognized wide varieties of risks. As the problems became more complex, Wall Street turned increasingly to the talents of mathematicians and physicists, offering them new and quite different career paths and unheard-of money. The instruments became more complex and were sometimes even referred to as "exotic."In 1994 the derivatives world was hit with a series of large losses on derivatives trading announced by some well-known and highly experienced firms, such as Procter and Gamble and Metallgesellschaft. One of America's wealthiest localities, Orange County, California, declared bankruptcy, allegedly due to derivatives trading, but more accurately, due to the use of leverage in a portfolio of short- term Treasury securities. England's venerable Barings Bank declared bankruptcy due to speculative trading in futures contracts by a 28- year old clerk in its Singapore office. These and other large losses ledto a huge outcry, sometimes against the instruments and sometimes against the firms that sold them. While some minor changes occurred in the way in which derivatives were sold, most firms simply instituted tighter controls and continued to use derivatives.These stories hit the high points in the history of derivatives. Even my aforementioned "Chronology" cannot do full justice to its long and colorful history. The future promises to bring new and exciting developments.Don Chance is a professor of finance at LouisianaStateUniversity. He can be reached at dchance@For More ReadingBlack, Fischer and Myron Scholes. "The Pricing of Options and Corporate Liabilities." The Journal of Political Economy 81,637-654.Chance, Don M. "A Chronology of Derivatives." Derivatives Quarterly 2 (Winter, 1995), 53-60.Mackay, Charles. Extraordinary Popular Delusions and the Madness of Crowds. New York; Harmony Books (1841, current version 1980).This column is excerpted from “Essays in Derivatives” by Don Chance (John Wiley & Sons, 1998) under an agreement with the publisher by Financial Engineering News.。