奥本海默英文简介

奥本海默英文简介
奥本海默英文简介

罗伯特·奥本海默(J. Robert Oppenheimer,1904年4月22日—1967年2月18日),美国犹太人物理学家,曼哈顿计划的领导者,1945年主导制造出世界上第一颗原子弹,被誉为“原子弹之父”。曾在美国普林斯顿高等学术研究所工作。

早年经历:

奥本海默1904年4月22日生于纽约一个富有的德裔犹太人家庭,自幼就有着优裕的生长环境。父亲是德籍犹太人,从小就移民到美国,后来在纺织界致富。母亲是一个天才画家,她鼓励奥本海默接触艺术和文学,却在奥本海默九岁时去世。他天资聪颖,兴趣广泛,幼时广泛涉猎文学、哲学、语言等领域,尤其爱好诗歌,对道德和艺术有着相当高的敏感性,而所有这些在他日后思想和事业的发展中都留下了久远的影响和痕迹。1921年,奥本海默以十门全优的成绩毕业于纽约菲尔德斯顿文理学校,因病延至次年入哈佛大学化学系学习。他三年读完哈佛大学,1925年以荣誉学生的身份提前毕业,他父亲很高兴,送给他一艘三十英尺长的帆船。随后他到英国剑桥大学深造,想跟卢瑟福(E. Rutherford,1871-1937)从事实验物理研究,但卢瑟福不愿收他为学生,这时他迷上了量子力学,于是开始攻读理论物理,加入到著名的卡文迪许实验室,1926年,转到德国哥廷根大学,跟随玻恩(M. Born,1882-1970)研究,1927年以量子力学论文获德国哥廷根大学博士学位,据称论文发表当天,在座的评审教授竟无一人敢发言反驳。接下来的两年他在瑞士的苏黎克(Zürich)和荷兰的莱登(Leiden)作进一步的研究。1929年夏天,奥本海默回到美国,不幸感染了肺结核,在新墨西哥州洛塞勒摩斯(Los Alamos)镇附近的一个农场上养病。

后来他在伯克利大学和加利福尼亚大学任教,即使是上课,烟斗仍片刻不离嘴,又经常咳嗽,成为学生模仿的对象。奥本海默不看报纸、不看新闻报导,也不听收音机,对政治也缺乏兴趣。奥本海默的研究范围很广,从天文、宇宙射线、原子核、量子电动力学到基本粒子。他有辩才,擅长于组织管理能力,精通八种语言,尤爱读梵文《薄伽梵歌》经典,为此自修梵文

1940年,他跟生物学家凯塞琳·哈利生(Katherine Harrison)结婚,凯塞琳是左翼份子。奥本海默的妻子、前女友、弟弟等人和共产党有深浅不一的关系。

Robert Oppenheimer (J. Robert Oppenheimer, April 22, 1904 - February 18, 1967), American Jewish physicist, head of the Manhattan project in 1945, leading to create the world's first atomic bomb, known as "the father of the atomic bomb". Once the work American higher academic research in Princeton.

Early experiences:

Oppenheimer was born in April 22, 1904 in New York, a wealthy German Jewish family, since the baby has good growth environment. Father is German Jews, had emigrated to USA, later in the textile industry to become rich. Mother is a talented artist, she encouraged Oppenheimer to contact the arts and literature, has died at the age of nine Oppenheimer. He was bright, the interest is extensive, childhood dabble in fields of literature, philosophy, language, especially like poetry, there is a fairly high sensitivity of morality and art, and all of these in the development of his later thought and career has left a far-reaching influence and traces. In 1921, Oppenheimer to ten full excellent result New York graduated from the Fieldston grammar school, was extended to the Harvard University Department of chemistry learning. He read of Harvard University for three

years, in 1925 to honor the identity of students graduate in advance, his father is very happy, gave him a thirty foot sailboat. Then he went to study at the University of Cambridge, wanted to talk to Lu Sefu (E. Rutherford, 1871-1937) in experimental physics, but Lu Sefu refused to accept him as a student, he hooked on quantum mechanics, then began studying theoretical physics, adding to the famous Cavendish laboratory, University of Gottingen in 1926, go to Germany, following Born (M. Born, 1882-1970) study on quantum mechanics, in 1927 the German doctor degree of University of Gottingen, the papers published on the same day, Professor review here and there is no one dare to speak retort. The next two years in the Swiss Su like (Z ürich) and Lydon of Holland (Leiden) for further study. The summer of 1929, Oppenheimer returned to American, unfortunately infected with tuberculosis, in New Mexico Luosaile Moss (Los Alamos) works on a farm near the town of.

He teaches at Berkeley University and University of California, even school, pipe still did not for a moment from the mouth, often cough, become students of the object. Oppenheimer do not read newspapers, do not look at the news, nor listen to the radio, is also a lack of interest in politics. The scope of the study of Oppenheimer's is very wide, from astronomy, cosmic ray nuclei, quantum electrodynamics, the elementary particles. He is eloquent, good at organization and management ability, fluent in eight languages, especially love to read Sanskrit Bhagavad Gita "classic", this study Sanskrit

In 1940, he told the biologist Katherine Harry (Katherine Harrison) married, Katherine is a leftist. The relationship between Oppenheimer's ex girlfriend, wife, brother, and the Communist Party there are varying shades.

辉煌成就:

1942年8月,奥本海默被任命为研制原子弹的“曼哈顿计划”的实验室主任,在新墨西哥州沙漠建立洛斯阿拉莫斯实验室(Los Alamos Laboratory),洛斯阿拉莫斯实验室成功地制造了第一批原子弹,随后在阿拉摩高德沙漠上空引爆,并发出耀目闪光及冒起巨型蘑菇状云。1945年8月6日上午8时15分17秒,美国在太平洋蒂尼安岛上的空军基地朝日本广岛投下了第一枚原子弹。奥本海默领导着整个团队完成了这场杜鲁门所盛赞的“一项历史上前所未有的大规模有组织的科学奇迹”,从而不仅验证了科学技术的巨大威力,为尽早结束战争作出了贡献,也为自己赢得了崇高的声誉,成了举国上下人所共知的英雄。他被人们誉为“原子弹之父”。

巨大自责:

然而,面对着成功和荣誉,奥本海默的心情是苦涩而复杂的。科学的目的不仅仅在于求真、探索大自然的奥秘,也在于致善、改善人们的生活条件并增进人类福祉。然而原子弹的研制,却很难与此目标一致,且包含着危及人类自身生存的潜在危险。尤其是当纳粹德国已经战败且已知其并不具备核能力。当现场目击第一颗原子弹试爆成功所展现的世界末日般情景时,科学家们体验到的绝不仅仅是成功的喜悦,更有着对于其未来前景的难以抑制的恐惧和担忧,因为他们清楚,这个孽障一旦被他们从潘多拉魔盒中亲手“释放”出来,其对于人类生命价值的肆虐和威胁,就不再为他们所能控制掌握了。

当原子弹试爆成功时,奥本海默本“对自己所完成的工作有点惊惶失措”,而在心中浮起了“我成了死神,世界的毁灭者”的感觉。

当原子弹在广岛和长崎掷下以后,奥本海默心中的罪恶感就愈发难以解脱了,以至于作为美国代表团成员在联合国大会上脱口而出:“主席先生,我的双手沾满了鲜血”。气得当时美国总统杜鲁门大叫“以后不要再带这家伙来见我了。无论怎么说,他不过只制造了原子弹,下令投弹的是我。”而面对记者,奥本海默则坦言:“无论是指责、讽刺或赞扬,都不能使物理学家摆脱本能的内疚,因为他们知道,他们的这种知识本来不应当拿出来使用。”

1965年,奥本海默患了肝炎,身体不佳。他于1966年退休,1967年2月18日在普林斯顿死于喉癌,许多科学家参加他的葬礼,遵照他的遗嘱,将他火化,骨灰撒到维尔京群岛。

奥本海默一生中所追求的目的:他曾经在一次演讲中对此做了精彩的阐述:在工作和生活中,他们应互相帮助并帮助一切人……我们应该保持我们美好的感情和创造美好感情的能力,并在那遥远的不可理解的陌生的地方找到这个美好的感情。

Brilliant achievements:

In 1942 August, Oppenheimer was appointed as the director of the laboratory of the development of the atomic bomb "Manhattan plan", establish Los ala Moss laboratory in New Mexico desert (Los Alamos Laboratory), Los ala Moss laboratory successfully created the first atomic bomb detonated over the Alamo, with high moral desert, and issued a dazzling flash and take play a huge mushroom cloud. Eight fifteen in the morning of August 6, 1945 17 seconds, American Air Force Base in the Pacific island of Hiroshima Dinian toward Japan dropped the first atomic bomb. Oppenheimer led the team to complete the highly praised by Truman "organized a large-scale hitherto unknown history of the wonders of science", which not only shows the tremendous power of science and technology, contributing to an early end to the war, also won a lofty reputation for himself, the whole nation and people were known hero. He became known as "the father of the atomic bomb".

Great remorse:

However, in the face of success and honor, Oppenheimer mood is bitter and complicated. The aim of science is not only truth, to explore the mysteries of nature, is also good, the improvement of people's living conditions and the improvement of human welfare. However, the development of the atomic bomb, but it is very difficult to the same goal, and contains endangering the potential risk of human existence. Especially when Nazi Germany was defeated and known does not have a nuclear capability. When the scene witnessed the first atomic bomb test explosion successfully show the doomsday scenario, the scientists to experience is not only the joy of success, more fear and worry unbearable for the future, because they know, this evil creature once they are from Pandora's box in hand "release", the value of human life, abuse and threats, is no longer as they can control.

When the atomic bomb test explosion success, Oppenheimer this "a little be thrown into a panic" for their work, but in mind floated "I am become death, the destroyer of the world" feeling.

When the atomic bomb on Hiroshima and Nagasaki to throw down, Oppenheimer feeling of guilt is increasingly difficult to escape, so as USA delegation escape one's lips at the United Nations General Assembly: "Mr. President, my hands are stained with blood". Gas was America President Truman shouted "don't take this guy came to see me. No matter how to say, but he made only the

atomic bomb, ordered the bombing is my." In the face of the reporter, Oppenheimer said: "whether it is accused, ironic or praise, cannot allow physicists to get rid of the instinct of guilt, because they know the knowledge, they should not have been put to use."

In 1965, Oppenheimer suffered from hepatitis, poor health. He retired in 1966, February 18, 1967 died of throat cancer in Princeton, many scientists attending his funeral, according to his will, he will be cremated, the ashes in the virgin islands.

Oppenheimer pursued the purpose of life: he once in a speech made a brilliant exposition: in work and life, they should help each other and help all people...... We should keep our good feelings and the ability to create good feelings, and find the good feelings in that distant incomprehensible strange place.

希腊罗马神话之Hera简介英文版

HERA (JUNO). Hera, the eldest daughter of Cronus and Rhea, was born at Samos, or, according to some accounts, at Argos, and was reared by the sea-divinities Oceanus and Tethys, who were models of conjugal fidelity. She was the principal wife of Zeus, and, as queen of heaven, participated in the honours paid to him, but her dominion only extended over the air (the lower aerial regions). Hera appears to be the sublime embodiment of strict matronly virtue, and is on that account the protectress of purity and married women. Faultless herself in her fidelity as a wife, she is essentially the type of the sanctity of the marriage tie, and holds in abhorrence any violation of its obligations. So strongly was she imbued with this hatred of any immorality, that, finding herself so often called upon to punish the failings of both gods and men in this respect, she became jealous, harsh, and vindictive. Her exalted position as the wife of the supreme deity, combined with her extreme beauty, caused her to become exceedingly vain, and she consequently resented with great severity any infringement on her rights as queen of heaven, or any apparent slight on her personal appearance. The following story will signally illustrate how ready she was to resent any slight offered to her. At the marriage of the sea-nymph Thetis with a mortal called Peleus, all the gods and goddesses were present, except Eris (the goddess of Discord). Indignant at not being invited, she determined to cause dissension in the assembly, and for this purpose threw into the midst of the guests a golden apple with the inscription on it "For the Fairest." Now, as all the goddesses were extremely beautiful, each claimed the apple; but at length, the rest having relinquished their pretensions, the number of candidates was reduced to three, Hera, Athene, and Aphrodite, who agreed to appeal to Paris for a settlement of this delicate question, he being noted for the wisdom he had displayed in his judgment upon several occasions. Paris was the son of Priam, king of Troy, who, ignorant of his noble birth, was at this time feeding his flocks on Mount Ida, in Phrygia. Hermes, as messenger of the gods, conducted the three rival beauties to the young shepherd, and with breathless anxiety they awaited his decision. Each fair candidate endeavoured to secure his favour by the most tempting offers. Hera promised him extensive dominions; Athene, martial fame and glory; and Aphrodite, the loveliest woman in the world. But whether he really considered Aphrodite the fairest of the three, or preferred a beautiful wife to fame and power, we cannot tell; all we know is that to her he awarded the golden apple, and she became ever after universally acknowledged as the goddess of beauty. Hera, having fully expected that Paris would give her the preference, was so indignant that she never forgave him, and not only persecuted him, but all the family of Priam, whose dreadful sufferings and misfortunes during the Trojan war were attributed to her influence. In fact, she carried her animosity to such an extent that it was often the cause of domestic disagreements between herself and Zeus, who espoused the cause of the Trojans. Among the many stories of these frequent quarrels there is one connected with Heracles, the favourite son of Zeus, which is as follows:--Hera having raised a storm at sea in order to drive him out of his course, Zeus became so angry that he hung her in the clouds by a golden chain, and attached heavy anvils to her feet. Her son Hephaestus tried to release his mother from her humiliating position, for which Zeus threw him out of heaven, and his leg was broken by the fall.

《信号与系统》信号术语中英文对照

A Absolutely integrable 绝对可积Absolutely integrable impulse response 绝对可积冲激响应Absolutely summable 绝对可和Absolutely summable impulse response 绝对可和冲激响应Accumulator 累加器 Acoustic 声学 Adder 加法器 Additivity property 可加性 Aliasing 混叠现象 All-pass systems 全通系统 AM (Amplitude modulation ) 幅度调制 Amplifier 放大器 Amplitude modulation (AM) 幅度调制Amplitude-scaling factor 幅度放大因子Analog-to-digital (A-to-D) converter 模数转换器Analysis equation 分析公式(方程)Angel (phase) of complex number 复数的角度(相位)Angle criterion 角判据 Angle modulation 角度调制Anticausality 反因果

Aperiodic 非周期 Aperiodic convolution 非周期卷积Aperiodic signal 非周期信号Asynchronous 异步的 Audio systems 音频(声音)系统Autocorrelation functions 自相关函数Automobile suspension system 汽车减震系统Averaging system 平滑系统 B Band-limited 带(宽)限的 Band-limited input signals 带限输入信号 Band-limited interpolation 带限内插 Bandpass filters 带通滤波器Bandpass signal 带通信号 Bandpass-sampling techniques 带通采样技术Bandwidth 带宽 Bartlett (triangular) window 巴特利特(三角形)窗Bilateral Laplace transform 双边拉普拉斯变换Bilinear 双线性的 Bilinear transformation 双线性变换 Bit (二进制)位,比特

2信号与系统_奥本海默_华科_电信系_英文_试卷

TEST OF HUAZHONG UNIVERSITY OF SCIENCE & TECHNOLOGY (A) Course: SIGNALS & SYSTEMS (Closed Book) (2008/05/24) SPECIALTY_________CLASS_________NAME__________No.____________ 1. (20 points)Consider the following problems, then fill in the blanks. (2 points for each blank) (a) ()()=-?-dt t t 3sin 2π ππδ__________________; (b) The fundamental period of sequence ?? ? ??+=376cos ][n n x π is________________; (c) If a continuous-time system is defined by ()()t x e t y t -=1, then we can determine that it ’s a (linear / nonlinear) _____________, (time invariant / time variant) _________________, (causal / noncausal) _____________ system; (d) Consider a discrete-time system with the input and output relationship being [][][2]y n x n x n =-, if the input [][]n A n x δ=, here A is an arbitrary real or complex number, the output []y n =___________; (e) If an LTI system with impulse response ()t h 1 is invertible, and its inverse system has an impulse response ()t h 2, then we have 12()()h t h t *=______________; (f) The constant component of the continuous-time periodic signal ()sin()x t t ω= is________; (g) A signal ()x t with Fourier transform ()ωj X undergoes impulse-train sampling. If ()0=ωj X for s rad /105>ω, then the Nyquist sampling period is___________ second ; (h) Consider a signal ()t x 1 with FT ()ωj X 1. If ()01=ωj X for m ωω>, then for signal ()?? ? ??=2312t x t x with FT ()ωj X 2, there must be ()02=ωj X for >ω_________.

美国50州简介以及大学介绍

1. Alaska阿拉斯加州AK 简介:阿拉斯加是美国的第49州,首府是朱诺(Juneau)。人口70万左右,面积656425平方英里,和中国的新疆省差不多大。阿拉斯加州第一大城是安克拉治,为第一海港。 气候:南方沿海地区,一月平均温度约为零下二度,七月的平均温度则约为十三度。北方北极海区,一月的平均温度为零下二十四度,七月则为八度。 推荐学校:阿拉斯加大学University of Alaska — Fairbanks。(第三级) 2. California加利福尼亚州CA 简介:加州分为北加州及南加州。北加州以旧金山为中心。南加州则以大港洛杉矶为中心一路往南朝圣地亚哥发展,此地是加州人口增长最快的地方。柏克莱大学位于北加州,是北加州的学术重心。加州人口约3655万人,面积163707平方英里。 气候:加州大部份的地区只有两个季节:乾季与湿季。洛杉矶的年平均温度为十八点三度,旧金山的年均温则是十三点九度。远离海岸的高山地区,夏季气候暖和,冬季则较为寒冷。 推荐学校: 拜欧拉大学Biola University(第四级); 加州理工学院California Institute of Technology(第6名); 金门大学Golden Gate University(第四级); 佩珀代因大学Pepperdine University(第56名); 圣地亚哥州立大学San Diego State University(第四级);

斯坦福大学Stanford University ( 第4名) 加州大学伯克利分校University of California Berkeley(第21名); 加州大学洛杉矶分校University of California-Los Angeles(第25名);加州大学圣地亚哥分校University of California-San Diego (第38名);加州大学戴维斯分校University of California Davis(第44名); 加州大学欧文分校University of California Irvine(第44名); 加州大学河滨分校University of California Riverside(第89名); 加州大学圣塔芭芭拉分校University of California Santa Barbara(第44名); 加州大学圣克鲁兹分校University of California Santa Cruz(第96名);圣地亚哥大学University of San Diego(第102名); 旧金山大学University of San Francisco(第127名); 拉文大学University of La Verne(第三级) 太平洋大学University of the Pacific(第102名); 3. Delaware德拉华州DE 简介:德拉华州位于新泽西州,宾州及马里兰州的交界处,面积1954平方英里,人口只有85万。本州德拉华是最好的大学,且是东岸名校中地点最好,生活费最低的一个州。 气候:由於位近大西洋,该州气候非常潮湿。该州北部的平均温度,一月时约为零下四度到六度,七月时则为十八度到三十一度。该州南部一月的平均温度为零下零点五度到八度,七月时为二十一度到二十九度。

电子科技大学抗干扰国家重点实验室

大家好~本人今年刚刚考取抗干扰实验室的通信与信息系统方向学术型研究生~~一年来,在论坛里学到了很多东西,包括学长学姐的建议,包括一些有用的资料等等。现在自己的研究生复试尘埃落定了,我也总结了一些东西,不管有用没用,上来发一下,哪怕对一个人有用呢,也算是一点对论坛的贡献吧。 关于英语的复习,我个人英语基础不错。。。所以今年英语是裸考的。。连单词都没背。。结果71。。还算是比较不错吧。。。我学习英语的经验就是多读多背。。语感是很重要的。。如果要短期提高英语的话,建议一开始先把新东方单词红宝书搞定,特别是对于词汇量不足的同学。不然到了考场上发现大片的词都不认识跟天书一样是很痛苦的。。单词建议重复记忆。多记几遍的效果要远远好于认认真真记一遍的效果。。参考那个什么记忆衰减曲线。单词掌握的差不多了就做真题吧。神马模拟题之类的和真题远远不是一个水平的。。还是真题最重要。。把真题认真做上4遍吧。前两遍弄懂答案。。后两遍主要就是看阅读。。把阅读文章里面的生词都记住。。你会发现真题里面的高频词汇还是很多的。。往年的高频词换到下一年很可能还是高频词。。后两遍的主要任务就是利用真题记单词。。分析句子结构特别是长难句。。彻底把一篇阅读理解拆开来看。。每句话都搞懂。。英语就是要不断的读。重复记忆。。多用多练。。关于阅读理解的做题技巧很多。。我一般都是找关键词。。路标词(就是像but, however 这种有转折,递进,总结等性质的词)。。关键句(一般是首句、尾句,当然也有的在句中或者需要自己总结的) 数学。。。课本。。复习全书一定要掌握的非常熟。。公式啊定理啊都要掌握的很熟练。。包括他们的应用条件。。不要指望着做题的时候翻书,然后临考前再去记忆。。那样到了考场一紧张你很可能什么都忘了。。我课本看了3遍。。复习全书认真看了2遍。。后面有有重点的看了2遍吧。。。特别是复习全书。。一定要搞懂。。吃透。。然后就是做真题吧。。不推荐做什么模拟题。。那个经典400题个人感觉难度不小。。喜欢挑战难题找成就感的同学可以做。。一般的就不推荐了吧。很容易打击自信的。。把真题反复多做几遍搞懂吃透就行了。。。针对选择填空可以做基础过关660题。这个不错。考的很细。做好的话应付选择填空不成问题。。总之数学不容得投机取巧。要很扎实的来过才行。 政治。。临考前一个半月再看就可以。。根本不用看课本。。也根本不用报班。。什么押题什么的都是胡扯。。他们所谓的押题就是押中知识点。。不可能是原题的。。可以买一本任汝芬的序列1,(序列2、3个人感觉没有必要买),序列4,高教出版社的大纲解析,高教出版社的考试分析(很薄的一本),一套真题。。一开始看序列1,其实序列1和大纲解析的内容差不多,先看序列1是因为他里面很多内容比如选择题的考点,大题的每一条都用红颜色给标出了,所以看起来比较省力。。第一遍认真看。。特别是马基那块不太容易懂得地方,一定要认真看把它搞懂。。这块主要考察理解能力。。看你会不会用各种原理分析问题。。。。。近代史毛邓三就和看小说似的记就行了。这块主要考察记忆能力。。。思修主要是在个人价值与社会价值。。爱国主义。。社会主义荣辱观那一块吧。。比较好看。。。认真看完序列1后再看大纲解析。。差不多的内容,只是大纲解析全是黑色字的。。根据你对序列1的掌握。。不妨一边看大纲解析一边根据你对序列1的掌握情况边看边画。。进行第二遍巩固记忆。。。看完这些后就可以做真题了。。把真题的选择题过一遍。。你会发现很多地方每年都会重复出题。。也就是高频考点。。这个要重点掌握。。选择题一般要做到35左右吧。。越高越好。。30以下就比较杯具了。。不过一般刚看完大纲解析

2017年美国奥本大学药剂科学理科硕士专业

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https://www.360docs.net/doc/4e6140342.html, 少在研究生阶段完成30个学分。本专业是美国阿巴拉马州的公共支持专业项目之一,所有的授课教师都是教授级别。 就业方向: 通过本专业的学习,学生可以凭借所掌握的专业知识,从事制药、药理、化学等相关领域内的工作。也可以在大学、学院、科研所等高等教育机构或科研机构从事学术研究、开发、教育、制药管理等工作。 入学要求: 学术要求: 取得药剂学、制药学或相关健康科学专业类的学士学位,且成绩优异。 语言要求: 1.托福网考成绩在95分以上; 2.或雅思成绩在6.5分以上; 3.无双录取。 其他要求: 要求提供GRE成绩。 申请材料: 1、完成入学申请表; 2、申请费; 3、托福或雅思等英语语言成绩; 4、GRE成绩; 5、财产资助证明; 6、3封推荐信; 7、医疗保险计划证明; 8、成绩单。

https://www.360docs.net/doc/4e6140342.html, 2005年工程学院的“土木工程硕士项目”被USNews排名全美48 2004年工程学院的“工业和系统工程硕士项目”被USNews排名全美22

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《信号与系统》专业术语中英文对照表第 1 章绪论 信号(signal) 系统(system) 电压(voltage) 电流(current) 信息(information) 电路(circuit) 网络(network) 确定性信号(determinate signal) 随机信号(random signal) 一维信号(one–dimensional signal) 多维信号(multi–dimensional signal) 连续时间信号(continuous time signal) 离散时间信号(discrete time signal) 取样信号(sampling signal) 数字信号(digital signal) 周期信号(periodic signal) 非周期信号(nonperiodic(aperiodic)signal) 能量(energy) 功率(power) 能量信号(energy signal) 功率信号(power signal) 平均功率(average power) 平均能量(average energy) 指数信号(exponential signal) 时间常数(time constant) 正弦信号(sine signal) 余弦信号(cosine signal) 振幅(amplitude) 角频率(angular frequency) 初相位(initial phase) 周期(period) 频率(frequency) 欧拉公式(Euler’s formula) 复指数信号(complex exponential signal) 复频率(complex frequency) 实部(real part) 虚部(imaginary part) 抽样函数Sa(t)(sampling(Sa)function) 偶函数(even function) 奇异函数(singularity function)

基于MATLAB的信号与系统仿真及应用

本科毕业(论文) 题 目 (中、英文 ) in The Signal System 分类 号 学号 密级 公开 学校代码 1107044431 TN911.6 基于MATLAB 的信号系统仿真及应用 The Application of MATLAB in The Signal System 工科 作者姓名 指导教师 学科门类 专业名称 电气工程及其自动化 提交论文日期 成绩评定 二零一五年五月

摘要 当前的科学信息技术正在日新月异的高速发展,而通过应用数字信号处理的方法,已成为一个非常重要的技术手段被广泛应用在通信、音频和图像、遥感,视频等领域。为了更好地了解信号与系统的基本理论和掌握其方法,从而更好地理解和掌握数字信号处理的理论知识,因此在实验过程中我们就需要通过MATLAB 计算机辅助设计平台。 本论文主要探究MATALB在信号与系统中的连续信号和离散信号中的应用,主要从连续和离散两方面入手,进一步掌握信号系统中的相关知识。同时引进计算机软件—MATLAB,对信号系统二阶系统的时域和频域分析,通过它在计算机上对程序进行仿真,阐述信号与系统理论应用与实际相联系。以此激发学习兴趣,变被动接受为主动探知,从而提升学习效果,培养主动思维,学以致用的思维习惯,也可以让人们进一步了解MATLAB软件 关键词:采样定理;MATLAB;信号与系统;抽样定理

Abstract Current, the rapid development of science and information technology are changing and through the application of digital signal processing method, has become a very important technology is widely used in communication, audio and video, remote sensing, video, etc. In order to better understand the basic theory of signal and system, and grasp the method, to better understand and master the theoretical knowledge of digital signal processing, so we need in the process of experiment by MATLAB computer aided design platform. This thesis mainly explores MATALB in signal and system, the application of discrete and continuous signals, mainly from the two aspects of the continuous and discrete, further to master relevant knowledge of signal system. Introduction of computer software - MATAB at the same time, the signal system of second order system time domain and frequency domain analysis, through its d on program on computer simulation, signal and system theory associated with the actual application. To stimulate interest in learning, change passive accept to active detection, so as to improve learning effect, active thinking, to practice habits of thinking, also can let people learn more about MATLAB software. Key words:Sampling theorem; MATLAB; Signals and systems; The sampling theorem

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冰河世纪4中英文台词

1 00:00:00,000 --> 00:00:06,000 2 00:00:06,100 --> 00:00:15,000 3 00:01:31,000 --> 00:01:31,810 地壳30千米 4 00:01:31,840 --> 00:01:32,500 上地幔720千米 5 00:01:32,670 --> 00:01:33,500 下地幔2171千米 6 00:01:33,550 --> 00:01:34,516 外核5100千米 7 00:01:34,580 --> 00:01:35,518 内核6400千米 8 00:01:42,580 --> 00:01:44,690 地球 (很久很久以前) 9 00:02:12,345 --> 00:02:13,835 打门! Goal! 10 00:03:04,500 --> 00:03:06,911 冰河世纪4:大陆漂移 11 00:03:24,551 --> 00:03:26,678

那是什么?艾莉,你听到了么? What was that? Ellie, did you hear that? 12 00:03:26,887 --> 00:03:29,219 我听到了,曼尼,不管是什么,还很远 I heard it, Manny. Whatever it is, it's miles away. 13 00:03:29,389 --> 00:03:30,720 桃子,你还好么? Peaches, are you all right? 14 00:03:31,258 --> 00:03:32,247 她去哪儿了? Where is she? 15 00:03:32,526 --> 00:03:34,517 小孩子哪有那么起这么早 No teenager is ever up early. 16 00:03:35,595 --> 00:03:37,790 放心啦,典狱长,人家又没给关禁闭 Easy warden, she's not on lockdown. 17 00:03:42,469 --> 00:03:44,869 你们俩是怎么当叔叔的! You two were supposed to be responsible uncles! 18 00:03:44,938 --> 00:03:48,169 什么?我才没有看到桃子15还是20分钟前溜走了What? I didn't see Peaches sneak off maybe 15 or 20 minutes ago. 19 00:03:48,241 --> 00:03:50,402

美国各个州的情况

2. Califo rnia加利福尼亚州CA 简介:加州分为北加州及南加州。北加州以旧金山为中心。南加州则以大港洛杉矶为中心一路往南朝圣地亚哥发展,此地是加州人口增长最快的地方。柏克莱大学位于北加州,是北加州的学术重心。加州人口约3655万人,面积163707平方英里。 气候:加州大部份的地区只有两个季节:乾季与湿季。洛杉矶的年平均温度为十八点三度,旧金山的年均温则是十三点九度。远离海岸的高山地区,夏季气候暖和,冬季则较为寒冷。 推荐学校: 拜欧拉大学Biola University(第四级); 加州理工学院Califo rnia Institute of Technology(第6名); 金门大学Golden Gate University(第四级); 佩珀代因大学Pepperdine University(第56名); 圣地亚哥州立大学San Diego State University(第四级); 斯坦福大学Stanfo rd University ( 第4名) 加州大学伯克利分校University of Califo rnia Berkeley(第21名); 加州大学洛杉矶分校University of Califo rnia-Los Angeles(第25名); 加州大学戴维斯分校University of Califo rnia Davis(第44名); 加州大学欧文分校University of Califo rnia Irvine(第44名); 加州大学河滨分校University of Califo rnia Riverside(第89名); 加州大学圣塔芭芭拉分校University of Califo rnia Santa Barbara(第44名); 加州大学圣克鲁兹分校University of Califo rnia Santa Cruz(第96名); 圣迭戈大学University of San Diego(第102名); 旧金山大学University of San Francisco(第127名); 拉文大学University of La Verne(第三级) 太平洋大学University of the Pacific(第102名);

冰河世纪2纯英文台词

TheMeltdown 冰河世纪2 This global warming is killing me. This Is too hot, the Ice Age was too cold. What would it take to make you happy This I like. Oh, no, you won't catch me. No running, James. Camprules. Make me, sloth. Make me, sir. It's all about respect. Water ball. Sammy, you just ate. Wait an hour. Hector, no, no, no, you can't pee-pee there. OK, there is fine. Ashley ,stop picking your... Pi ata! Stop! You're supposed to wear blind folds. OK. -Hey, it's my turn to hit the sloth. -Mine. -Mine. -Mine. Hey, you didn't have any candy in you. -Let's bury him. -Yeah! Hey, whoa. Who said you kids could to rture the sloth

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