西电研究生英语复习资料
Unit 1
1.除非我们共同快速we are on a trajectory for gloal warming to
become much more intense unless we begin a concerted rapid shift toward a low carbon economy.
2.尽管Some of the dire projection may not occur, but in light of the
warning from our best scientists, it would be beyond irresponsible to take the bet.
3.我们极大地破坏了大气层，By badly disrupting that envelope, we
adversely affect every dimension of human well-being that is tied to the environment.
4.诸如干旱、Extreme weather events, such as drought , floods, and
severe storms, become more intense and inflict greater damage to life and property.
5.即使我们明天停止气体排放Even if we cut off emissions tomorrow,
the concentration of greenhouse gases in the atmosphere would continue rising since these gases persist in the atmosphere for a very long time—from decades to thousands of years after they are first emitted depending on the specific type of greenhouse gas.
6.如果我们忽视气候变化和依赖石油的风险，。If we ignore the risks
of climate change and oil dependence, or fail to mobilize the political will needed to address them, then we will ultimately be forced into a much more costly and much less effective crash program down the road.
7.敏锐的专家们Alert pundits now foresee a world saturated with
powerful computer chips, which will increasingly insinuate themselves into our gadgets, dwellings, apparel and even our bodies.
8.What we do in the next two to three years will determine our future.
This is the defining moment.
9.在2004年In 2004, Swiss Re warned in a report that the costs of
natural disasters, aggravated by climate change, threatened to double to150 billon a year in 10 years.
10.这些威胁The threat of this major disruption coming from a number
of factors, including the increased costs of damage from extreme weather events such as floods, droughts, hurricanes, heat waves, and major storms.
11.S指出Stern also points to the consequences of climate change on the
environment and on human health as economic growth and productivity suffer under the weight of degrading environmental conditions.
12.另外，我们招致Moreover, we would incur a very large opportunity
cost, having lost out on the chance to become the economic leader in developing alternative and more efficient uses of energy.
Unit 4
13.这种自动化That kind of automation is a far cry from the versatile,
mobile, autonomous creations that so many scientists and engineers have hoped for.
14.考虑到我刚才一直在描述In light of what I have just described as a
history of largely unfulfilled goals in robotics, why I believe that rapid progress and stunning accomplishments are in the offing?
15.我声明计算机Implicit in my assertion that computers will eventually
be capable of the same kind of perception, cognition and thought as humans is the idea that a sufficiently advanced and sophisticated artificial system can be made and programmed to do the same thing as the human nervous system, including the brain.
16.问题的核心At the crux of the matter is the question of whether
biological structure and behavior arise entirely from physical law and whether, moreover, physical law is computable-that is to say, amenable to computer simulation.
17.这种机器人Such robots would host a suite of software conditioning
modules that would generate positive and negative reinforcement signals in predefined circumstances.
18.计算机恐怖主义分子The computer terrorist can inflict damage on
million of people with a single keystroke, sowing fear and doubt. 19.从国际上看，Internationally, the world economic situation can be
described as ups and downs, complicated and volatile.
20.如果你拒绝接触新人群，If you close yourself off to new people,
you will avoid pain, but also lose out to on meeting some incredible people.
21.目前In recent years the mushrooming power, functionality and
ubiquity of computers and the Internet have outstripped early forecasts about technolo gy’s rate of advancement and usefulness in everyday life.
22.适当的教育Properly educated, the resulting robots will become quite
formidable. In fact, I am sure they will outperform us in any conceivable area of endeavor, intellectual or physical.
23.人类扮演重要Human will play a pivotal role in formulating the
intricate complex of laws that will govern corporate behavior.
Unit 5
24.女权社团Women’s rights societies have been laboring for many years
after equality with man. Begin at the bottom, ladies. Get your feet on the ground, and then rise to theories of mental equality.
25.太阳下山Sundown had seen his pockets empty before; but sunrise
had always seen them lined.
26.他带着满意、Content, light-hearted, ironical, keenly philosophic, he
watched the moon drifting in and out amidst a maze of flying clouds. 27.一个叫麦克A man by the name of Mike, rising and buttoning his coat,
cut short Jack’s stereotyped speech.
28.一个5岁的男孩Along came a youngster of five, headed for the
dispensary, stepping high with the consequence of a big errand, possibly one to which his advancing age had earned him promotion. 29.人们花钱People’s money must be spent to advance their priorities,
not to line pockets of contractors or to maintain projects that don’t work.
30.他们进入迷宫They had entered a maze of fences, through which they
twisted and turned for a long time before finally finding their way out again
.
Unit 7
31.我的电视机坏了。My TV was dead. Now, however, my situation
offered a learning experience in TV-free TV. I entered what was called”
the post television society”.
32.我的iPhone My iphone doubles as a wireless video device, which is
both convenient and portable.
33.这就是大众媒体。This is why mass media were culturally unifying:
those moments that mattered, we all saw in exactly the same way. 34.现如今，电视播放Today TV broadcasts are just starting points, raw
material to be curated in a collective online canon.
35.如果一段视频If a video doesn’t grad me immediately, I kill it. But
when a show does engage me, the connection is deeper.
36.新旧书店里翻寻。Whereas channel-surfing is like turning on a faucet,
finding a show online is more like rummaging through a new-and used bookstore.
37.当我看这个节目的时候，When I watch the show, I rush to write a
blog post—not so much to get my thoughts out as to see the comments fill and find out what other people thought.
38.所有的学生，All students, be they graduates or undergraduates, must
obey the regulations.
39.我进入Through necessity, I was entering a club more viewers are
joining by choice: the post television society.
40.除非你VCR Unless you got proactive with VCR, you did not copy,
carry or remix what you saw. This was why mass media were culturally unifying: those moments that mattered, we all saw in exactly the same way.
41.为什么等待90分钟Why sit through 90 minutes waiting for the good
bits when an army of online editors will separate the wit from the chaff?
Unit 9
42.穆迪Moody launched a company to construct environment friendly
houses. Whether he is building new homes or renovating old ones, he insulates them to the hilt, uses sustainable materials and recycles so much debris.
43.虽然处于这一萧条的形势下，But amid this gloom, there’s buzz
consumer’s shifting demand toward “green homes”, It’s taken almost as a fait accompli, that green building is where the market is headed.
44.尽管声称会给广大消费者带来好处，For all the professed consumer
interest, the average home buyer knows little about green building. 45.绿色建筑的特征Green homes feature sustainable materials, good
insulation, efficient appliances and superior windows.
46.和许多创新一样，As with many innovation, some of the biggest
gains in efficiency come from using old-school materials that have been slow to catch on.
47.太阳能系统A solar system and geothermal system have long been
budget busters. But they will pay in the near future. Along the way, homeowners will reduce their carbon footprint.
48.如果说建造绿色住宅。If there is a downside to this trend, It may be
the growing numbers of green homeowners who will brag about low utility bills the way golfers boast of low golf scores.
49.绿色住宅或许不能Green homes may not spark the building
industry’s recovery, but in a world whose energy problems aren’t going away, they certainly can’t hurt.
50.I t’s taken almos t as a fait accompli, that green building is where the
market is headed.
西电数据挖掘大作业k-means和k-medoids
题 目： 数据挖掘 学 院： 电子工程学院 专 业： 智能科学和技术 学生姓名： ** 学 号： 02115*** k -means 实验报告 一、 waveform 数据 1、 算法描述 1. 从数据集{X n }n?1N 中任意选取k 个赋给初始的聚类中心c 1, c 2, …,
c k； 2.对数据集中的每个样本点x i，计算其和各个聚类中心c j的欧氏 距离并获取其类别标号： label(i)=arg min ||x i?c j||2,i=1,…,N,j=1,…,k 3.按下式重新计算k个聚类中心； c j=∑x j s:label(s)=j j ,j=1,2,…k 重复步骤2和步骤3，直到达到最大迭代次数为止2、实验结果 二、图像处理 1、算法描述 同上； 2、实验结果
代码： k_means: %%%%%%%%%K_means%%%%%%%% %%%%%%%%%函数说明%%%%%%%% %输入: % sample——样本集； % k ——聚类数目； %输出： % y ——类标(从0开始) % cnew ——聚类中心 % n ——迭代次数 function [y cnew n]=k_means(sample,k) [N V]=size(sample); %N为样本的个数 K为样本的维数 y=zeros(N,1); %记录样本类标 dist=zeros(1,k); rand_num=randperm(N); cnew=(sample(rand_num(1,1:k),:));%随机初始化聚类中心cold=zeros(k,V); n=0;
河南大学研究生英语考试复习资料
翻译 复习加油了！范围及条件调整1、2、4、6。1单元长度为7行左右，2、4、6单元4—5行，文体不限。好运！ 一、A Working Community 11、Not all the neighborhoods are empty, nor is every workplace a friendly playground. Most of us have had mixed experiences in these environments. Yet as one woman told me recently, she knows more about the people she passes on the way to her desk than on her way around the block. Our new sense of community hasn’t just moved from house to office building. The labels that we wear connect us with members from distant companies, cities, and states. We assume that we have something “in common” with other teache rs, nurses, city planners.不是所有的住宅区都是空的，也不是所有的工作单位都是友好的。多数人在这些环境里都曾有过复杂的经历。然而，最近一位女性朋友告诉我她对工作单位里的人的了解程度要胜于对同一街区人的了解程度。我们不仅把社区的概念从住宅区搬进了办公楼，上班时身上所佩戴的标志也把我们和异国他乡的人们和公司员工联系在一起。我们假设自己和其他的教师、护士、城市规划者有着某些共同点。 12、It’s not unlike the experience of our immigrant grandparents. Many who came to this country still identified themselves as members of the Italian community, the Irish communtiy, the Polish community. They sought out and assumes connection with people from the old country, Many of us have updated that experience. We have replaced ethnic identity with professional identity, the way we replaced neighborhood with the workplace. This whole realignment of community is surely most obvious among the mobile professions. People who move from city to city seem to put roots into their professions. In an age of specialists, they may have to search harder to find people who speak the same language.这有点像最初移民来到美国的我们的祖辈们的经历，许多人来到这里后把自己原来的国籍当成一个社区，所以有意大利人社区、爱尔兰人社区、波兰社区等。他们不断寻找并设想自己与来自同一个国家的人们有着亲密的联系。我们把这种体验提升了一步。像用工作单位取代居住地一样，我们用专业身份取代了种族身份。这种社区的完全重组在流动作业的行业中表现得最为明显，那些在不同城市变换工作的人似乎把自己的身份植根于他们的行业中。在这个充满专业人士的时代，他们不得不费尽周折去寻找有共同语言的人。 二、The Roots Of My Ambition 15、Mother would have liked it better if I could have grown up to be President or a rich businessman, but much as she loved me, she did not deceive herself. Before I was out of grade school, she could see I lacked the gifts for either making millions or winning the love of crowds. After that she began nudging me toward working with words.假如我现在是总统或者是富有的商人，妈妈应该会更满意的。虽然母亲很爱我，但她并没有欺骗自己。在我高中毕业之时，她就意识到了我缺少那种日进斗金或博取群众爱戴的能力。从那以后她就开始把我往写作的道路上推。 18、“Edwin James was no smarter than anybody else, and look where he is today,”my mother said, and said again, so than I finally grew up thinking Edwin James was adill clod who had a lucky break. Maybe she felt didn’t have to be brilliant to get where Edwin had got to, that the way to get to the top was to work, work, and work.艾德文并不比任何一个孩子聪明，看看他今天已经在哪了？母亲总是这样遍又一遍地对我说，以至于我长大以后认为艾德文?詹姆士不过是碰上了好运气的平庸之辈。也许母亲也是那样看待他的，但她的话中应该有更深的含意。她是在告
西电射频大作业(精心整理)
射频大作业 基于PSpice仿真的振幅调制电路设计数字调制与解调的集成器件学习
目录 题目一：基于PSpice仿真的振幅调制电路设计与性能分析 一、实验设计要求 (3) 二、理论分析 1、问题的分析 (3) 2、差动放大器调幅的设计理论 (4) 2.1、单端输出差动放大器电路 2.2、双端输出差动放大器电路 2.3、单二极管振幅调制电路 2.4、平衡对消二极管调幅电路 三、PSpice仿真的振幅调制电路性能分析 (10) 1、单端输出差动放大器调幅电路设计图及仿真波形 2、双端输出差动放大器调幅电路设计图及仿真波形 3、单二极管振幅调制电路设计图及仿真波形 4、平衡对消二极管调幅电路设计图及仿真波形 四、实验总结 (16) 五、参考文献 题目二数字调制与解调的集成器件学习 一、实验设计要求 (17) 二、概述 (17) 三、引脚功能及组成原理 (18) 四、基本连接电路 (20) 五、参考文献 (21) 六、英文附录 (21)
题目一基于PSpice仿真的振幅调制电路设计 摘要 随着大规模集成电路的广泛发展,电子电路CAD及电子设计自动化（EDA）已成为电路分析和设计中不可缺少的工具。此次振幅调制电路仿真设计基于PSpice，利用其丰富的仿真元器件库和强大的行为建模工具，分别设计了差分对放大器和二极管振幅调制电路，由此对线性时变电路调幅有了更进一步的认识；同时，通过平衡对消技术分别衍生出双端输出的差分对放大器和双回路二极管振幅调制电路，消除了没用的频率分量，从而得到了更好的调幅效果。本文对比研究了单端输出和双端输出的差分对放大器调幅电路及单二极管和双回路二极管调幅电路，通过对比观察时域和频域波形图，可知平衡对消技术可以很好地减小失真。 关键词：PSpice 振幅调制差分对放大器二极管振幅调制电路平衡对消技术 一、实验设计要求 1.1 基本要求 参考教材《射频电路基础》第五章振幅调制与解调中有关差分对放大器调幅和二极管调幅的原理，选择元器件、调制信号和载波参数，完成PSpice电路设计、建模和仿真，实现振幅调制信号的输出和分析。 1.2 实践任务 (1) 选择合适的调制信号和载波的振幅、频率，通过理论计算分析，正确选择晶体管和其它元件；搭建单端输出的差分对放大器，实现载波作为差模输入电压，调制信号控制电流源情况下的振幅调制；调整二者振幅，实现基本无失真的线性时变电路调幅；观察记录电路参数、调制信号、载波和已调波的波形和频谱。 (2) 参考例5.3.1，修改电路为双端输出，对比研究平衡对消技术在该电路中的应用效果。 (3) 选择合适的调制信号和载波的振幅、频率，通过理论计算分析，正确选择二极管和其它元件；搭建单二极管振幅调制电路，实现载波作为大信号，调制信号为小信号情况下的振幅调制；调整二者振幅，实现基本无失真的线性时变电路调幅；观察记录电路参数、调制信号、载波和已调波的波形和频谱。 (4) 参考例5.3.2，修改电路为双回路，对比研究平衡对消技术在该电路中的应用效果。 1.3 写作报告 (1) 按论文形式撰写，包括摘要、正文和参考文献，等等。 (2) 正文包括振幅调制电路的设计原理、理论分析结果、实践任务中各阶段设计的电路、参数、波形和频谱，对观察记录的数据配以图像和表格，同时要有充分的文字做分析和对比，有规律性认识。 (3) 论文结构系统、完备、条理清晰、理论正确、数据翔实、分析完整。 1.4 相关提示 (1) 所有电路和信号参数需要各人自行决定，各人有不同的研究结果，锻炼学生的独立研究和实验分析能力。 (2) 为了提高仿真精度和减小调试难度，可以将调制信号和载波的频率设置得较低。 二、理论分析 1、问题的分析 根据题目的要求，差分对放大器和二极管振幅调制电路目的都是实现基本无
研究生英语期末考试试卷
ad if 命 封 线 密
A. some modern women prefer a life of individual freedom. B. the family is no longer the basic unit of society in present-day Europe. C. some professional people have too much work to do to feel lonely. D. Most Europeans conceive living a single life as unacceptable. 5.What is the author’s purpose in writing the passage? A. To review the impact of women becoming high earners. B. To contemplate the philosophy underlying individualism. C. To examine the trend of young people living alone. D. To stress the rebuilding of personal relationships. Passage Two American dramas and sitcoms would have been candidates for prime time several years ago. But those programs －though some remain popular －increasingly occupy fringe times slots on foreign networks. Instead, a growing number of shows produced by local broadcasters are on the air at the best times. The shift counters longstanding assumptions that TV shows produced in the United States would continue to overshadow locally produced shows from Singapore to Sicily. The changes are coming at a time when the influence of the United States on international affairs has annoyed friends and foes alike, and some people are expressing relief that at least on television American culture is no longer quite the force it once was. “There has always been a concern that the image of the world would be shaped too much by American culture,” said Dr. Jo Groebek, director general of the European Institu te for the Media, a non-profit group. Given the choice, he adds, foreign viewers often prefer homegrown shows that better reflect local tastes, cultures and historical events. Unlike in the United States, commercial broadcasting in most regions of the world －including Asia, Europe, and a lesser extent Latin America, which has a long history of commercial TV －is a relatively recent development. A majority of broadcasters in many countries were either state-owned or state-subsidized for much of the last century. Governments began to relax their control in the 1980’s by privatizing national broadcasters and granting licenses to dozens of new commercial networks. The rise of cable and satellite pay-television increased the spectrum of channels. Relatively inexperienced and often financed on a shoestring, these new commercial stations needed hours of programming fast. The cheapest and easiest way to fill airtime was to buy shows from American studios, and the bidding wars for popular shows were fierce. The big American studios took advantage of that demand by raising prices and forcing foreign broadcasters to buy less popular programs if they wanted access to the best-selling shows and movies. “The studio priced themselves out of prime time,” said Harry Evans Sloan, chairman of SBS Broadcasting, a Pan-European broadcaster. Mr. Sloan estimates that over the last decade, the price of American programs has increased fivefold even as the international ratings for these shows have declined. American broadcasters are still the biggest buyers of American-made television shows, accounting for 90% of the $25 billion in 2001 sales. But international sales which totaled $2.5 billion last year often make the difference between a profit and a loss on show. As the pace of foreign sales slows －the market is now growing at 5% a year, down from the double-digit growth of the 1990’s －studio executives are rethinking production costs. 6. Which of the following best characterizes the image embodied in American shows? A. Self-contradictory B. Prejudice-free C. Culture-loaded D. Audience-targeted 7. The intervention of governments in the 1980’s resulted in __________ . A. the patenting of domination shows and movies B. the emergence of new commercial networks C. the promotion of cable and satellite pay-television D. the intense competition coming from the outside 8. The phrase “on a shoestring” (Para. 6) most probably means __________. A. in need of capital B. after a fashion C. on second thoughts D. in the interests of themselves 9. The main reason why American dramas and sitcoms are driven out of prime time is that ____. A. they lose competitiveness B. they are not market-oriented C. they are too much priced D. they fall short of audience expectations 10. American studio producers will give thought to production costs __________. A. if they have no access to popular shows B. because their endeavors come to no avail C. since bidding wars are no longer fierce D. as international sales pace slows down Passage Three How shops can exploit people's herd mentality to increase sales 1. A TRIP to the supermarket may not seem like an exercise in psychological warfare—but it is. Shopkeepers know that filling a store with the aroma of freshly baked bread makes people feel hungry and persuades them to buy more food than they had intended. Stocking the most expensive products at eye level makes them sell faster than cheaper but less visible competitors. Now researchers are investigating how “swarm intelligence” (th at is，how ants，bees or any social animal，including humans，behave in a crowd) can be used to influence what people buy. 2. At a recent conference on the simulation of adaptive behaviour in Rome，Zeeshan-ul-hassan Usmani，a computer scientist from the Florida Institute of Technology，described a new way to increase impulse buying using this phenomenon. Supermarkets already encourage shoppers to buy things they did not realise they wanted: for instance，by placing everyday items such as milk and eggs at the back of the store，forcing shoppers to walk past other tempting goods to reach them. Mr Usmani and Ronaldo Menezes，also of the Florida Institute of Technology, set out to enhance this tendency to buy more by playing on the herd instinct. The idea is that, if a certain product is seen to be popular, shoppers are likely to choose it too. The challenge is to keep customers informed about what others are buying. 3. Enter smart-cart technology. In Mr Usmani's supermarket every product has a radio frequency identification tag, a sort of barcode that uses radio waves to transmit information，and every trolley has a scanner that reads this information and relays it to a central computer. As a customer walks past a shelf of goods, a screen on the shelf tells him how many people currently in the shop have chosen that particular product. If the number is high, he is more likely to select it too.
西电《软件技术基础》上机大作业答案解析
说明 每个实验题目含有一个main函数和一些函数，与实验题目相关的基本运算的函数定义和main函数定义的代码在附录以及对应的文件夹中给出，供上机实验参考使用。对于每个题目，只需要根据题目要求设计算法，补充函数定义，然后对程序进行编译、调试。
实验一线性表 一、实验目的 1．熟悉线性表的顺序和链式存储结构 2．掌握线性表的基本运算 3．能够利用线性表的基本运算完成线性表应用的运算 二、实验内容 1．设有一个线性表E={e1, e2, … , e n-1, e n}，设计一个算法，将线性表逆置，即使元素排列次序颠倒过来，成为逆线性表E’={ e n , e n-1 , … , e2 , e1 }，要求逆线性表占用原线性表空间，并且用顺序表和单链表两种方法表示，分别用两个程序来完成。（文件夹：顺序表逆置、单链表逆置） 2．已知由不具有头结点的单链表表示的线性表中，含有三类字符的数据元素（字母、数字和其他字符），试编写算法构造三个以循环链表表示的线性表，使每个表中只含有同一类的字符，且利用原表中的结点空间，头结点可另辟空间。（文件夹：分解单链表） 实验二栈和队列 一、实验目的 1．熟悉栈和队列的顺序和链式存储结构 2．掌握栈和队列的基本运算 3．能够利用栈和队列的基本运算完成栈和队列应用的运算 二、实验内容 1．设单链表中存放有n个字符，试编写算法，判断该字符串是否有中心对称的关系，例如xyzzyx是中心对称的字符串。（提示：将单链表中的一半字符先依次进栈，然后依次出栈与单链表中的另一半字符进行比较。）（文件夹：判字符串中心对称） 2．假设以数组sequ[m]存放循环队列的元素，同时设变量rear和quelen 分别指示循环队列中队尾元素的位置和内含元素的个数。编写实现该循环队列的入队和出队操作的算法。 提示：队空的条件：sq->quelen==0；队满的条件：sq->quelen==m。（文件夹：循环队列）实验三串 一、实验目的 1．熟悉串的顺序存储结构 2．掌握串的基本运算及应用 二、实验内容 1．串采用顺序存储结构，编写朴素模式匹配算法，查找在串中是否存在给定的子串。（文件夹：模式匹配） 2．若S是一个采用顺序结构存储的串，利用C的库函数strlen和strcpy（或strncpy）编写
江苏省委党校在职研究生入学考试英语复习资料
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西电计算机视觉大作业
数字水印技术 一、引言 随着互联网广泛普及的应用，各种各样的数据资源包括文本、图片、音频、视频等放在网络服务器上供用户访问。但是这种网络资源的幵放也带了许多弊端，比如一些用户非法下载、非法拷贝、恶意篡改等，因此数字媒体内容的安全和因特网上的侵权问题成为一个急需解决的问题。数字水印作为一项很有潜力的解决手段，正是在这种情况下应运而生。 数字水印（技术是将一些代表性的标识信息，一般需要经过某种适合的变换，变换后的秘密信息（即数字水印），通过某种方式嵌入数字载体（包括文档、音频、软件等）当中，但不影响原载体的使用价值，也不容易被人的知觉系统（如视觉或听觉系统）觉察或注意到。通过这些隐藏在载体中的信息，可以达到确认内容创建者、购买者、传送隐秘信息或者判断载体是否被篡改等目的。在发生产权和内容纠纷时，通过相应的算法可以提取该早已潜入的数字水印，从而验证版权的归属和内容的真伪。 二.算法原理 2.1、灰度图像水印 2.1.1基本原理 处理灰度图像数字水印，采用了LSB（最低有效位）、DCT变换域、DWT变换域三种算法来处理数字水印。在此过程中，处理水印首先将其预处理转化为二值图像，简化算法。 （1）LSB算法原理：最低有效位算法(Least Sig nificant Bit , LSB)是很常见的空间域信息隐藏算法, 该算法就是通过改变图像像素最不重要位来达到嵌入隐秘信息的效果, 该方法隐藏的信息在人的肉眼不能发现的情况下, 其嵌入方法简单、隐藏信息量大、提取方法简单等而获得广泛应用。LSB 信息嵌入过程如下: S′=S+f S ,M 其中,S 和S′分别代表载体信息和嵌入秘密信息后的载密信息;M为待嵌入的秘密信息, 而隐写分析则是从S′中检测出M以至提取M 。 （2）DCT算法原理：DCT 变换在图像压缩中有很多应用，它是JPEG，MPEG 等数据
SQL数据库期末大作业
学校:北京联合大学 系别:信息管理系 姓名：孙超 学号：2013110444006 《餐饮业信息管理系统的开发》 1、本项目的需求分析 随着今年来中国餐饮行业的日益火爆，在强烈的行业竞争中，一个高效的餐饮信息管理系统的应用，无疑是至关重要的。高效，便捷的管理系统，不仅仅极大的方便了食客的就餐，同时对于餐饮公司的各项信息管理有着很大的帮助，同时，我们的餐饮信息管理系统还能帮助餐厅降低错误率，扩大营业范围，增加知名度等。 为了使得系统在操作的过程中，更加便捷，具有针对性，本次系统设计主要分为：员工登陆操作信息系统，以及店主操作管理信息系统。不同的设计从而达到不同的功能，实现信息的有效传达与管理。 第一：在员工使用本餐饮信息管理系统应可以实现以下功能： 1.添加修改查询客户会员信息(修改客户信息需客户确认) 2.查询菜单 3.添加查询预定信息，为老顾客打折 4.客户可以在自己的会员账户里充值 5.顾客可以用现金买单也可以从会员账户里扣取 第二：管理员使用本餐饮信息管理系统应可以实现以下功能： 1.添加修改查询客户会员信息(修改客户信息需客户确认) 2.添加修改查询菜单信息，最好能看到菜品图片 3.添加查询预定信息，为老顾客打折 4.客户可以在自己的会员账户里充值 5.顾客可以用现金买单也可以从会员账户里扣取 6.设定具体的打折方法 7.添加职员信息，权限也可以定为管理员。 8.可以查询使用者的现金收款金额。 二、餐饮业管理数据库管理系统的E-R模型（概念结构设计） 1.用户（员工）的信息：
编号、密码、类型、姓名、电话、收款金额 2.客户信息： 用户编号、客户编号、姓名、电话、密码、开卡时间、卡内余额 3.食谱： 类型、名称、价格、配料、照片 4.预定： 用户编号、日期、预定时间、客户姓名、类型、预定食谱、桌号5桌台管理： 桌号、使用情况、 6.点餐管理： 用户编号、类型、菜品、数量、价格、照片 7.盈利管理： 日期、日支出金额、店内收入、外卖收入、盈利额度 各对象之间的联系图： 用户E-R图 主要存储一些用户信息，如用户的账号、密码和类型地点等等，主要用于用户登录，添加客户和添加预定时会使用到用户信息。
硕士英语(二)总复习资料
硕士英语（二）复习资料 一、课后词汇（原题对照） Lesson 1 1.The Car Connectivity Consortium was founded under U.S. law as a limited liability corporation. A. assets B. business C. responsibility D. investment 2.His wife set about upbraiding him for neglecting the children. A. encouraging B. criticizing C. understanding D. hating 3.Do you look forward to old age, or do you dread frailty, loss of memory and dependence on others? A. loneliness B. poverty C. weakness D. illness 4.About 1-2% of the population are affected by temporary loss of smell: drugs, pollution and pregnancy can all distort the senses. A. work with B. interfere with C. associate with D. come with 5.Humans have trouble evaluating risks that are not salient. A. noticeable B. unique C. acceptable D. real 6.Sales are reminiscent of the 2008 holiday season when merchandise was marked down 50% to 80%. A. back from B. different from C. better than D. similar to 7.You agree to waive the claim, which speaks well for your friendly attitude and close cooperation . A. start B. continue C. change D. quit 8.I greatly enjoy these meetings unless I have to make a speech, in which case I’m in a state of dreadful anxiety. A. unexpected B. natural C. understandable D. terrible 9.Suffering was easier to bear than the bitterness he felt corroding his spirit. A. inspiring B. revealing C. destroying D. releasing 10.For the would-be online criminals, the likelihood of their getting caught and punished is vanishingly small, yet the profits are great.
江苏大学XXXX级硕士研究生英语期末考试样卷
江苏大学XXXX级硕士研究生英语期 末考试样卷 考试科目：文献阅读与翻译 考试时 间：XXXXXX Directions:Answer the following questions on the Answer Sheet. 1. How many kinds of literature do you know? And what are they? (5%) 2. How many types of professional papers do you know? And what are they? (5%) 3. What are the main linguistic features of Professional Papers? (10%) 4. What are the purposes of abstracts? How many kinds can the abstracts be roughly classified into? And what are the different kinds? (10%) 5.What is a proposal? How many kinds of proposals do you think are there? What are the main elements of a proposal? (10%) 6.Give your comments on the linguistic features of the following passage. (15%) Basic Point-Set Topology One way to describe the subject of Topology is to say that it is
西电数据结构大作业
题目：数据结构上机报告学院：电子工程学院 专业：信息对抗技术 学生姓名：甘佳霖 学号：14020310092
西安电子科技大学 数据结构课程实验报告实验名称线性表 电子工程学院 1402031 班Array姓名甘佳霖学号 14020310092 同作者 实验日期 2017 年 3 月 18 日
实验一线性表 一、实验目的 1．熟悉线性表的顺序和链式存储结构 2．掌握线性表的基本运算 3．能够利用线性表的基本运算完成线性表应用的运算 二、实验要求 1.设有一个线性表E={e1, e2, … , e n-1, e n}，设计一个算法，将线性表逆置，即使元素排列次序颠倒过来，成为逆线性表E’={ e n, e n-1 , … , e2 , e1 }，要求逆线性表占用原线性表空间，并且用顺序表和单链表两种方法表示，分别用两个程序来完成。 2.已知由不具有头结点的单链表表示的线性表中，含有三类字符的数据元素（字母、数字和其他字符），试编写算法构造三个以循环链表表示的线性表，使每个表中只含有同一类的字符，且利用原表中的结点空间，头结点可另辟空间。 三、设计思路 1.顺序表做逆置操作时将对应的首尾元素位置交换，单链表的指针end指向链表的末尾，指针start指向链表头结点，指针s用来找到指向end节点的节点，将指向链表末尾和头结点的存储内容交换，然后头结点指针指向下一节点，s指针从start节点开始遍历寻找指向end 指针的节点，并将end指针赋值为s指针，就完成了单链表的逆置，可以看出单链表和顺序表都可以完成线性表的逆置。 2.分解单链表的实现思路是首先新建3个循环链表，然后顺序遍历单链表，ASCII码判断链表中的元素属于哪一类元素，然后将这个元素添加到对应的循环链表中，从而实现分解单链表的功能。 四、运行结果 1.单链表逆置：