精彩无限VIDEO娱乐系统毕业设计(论文).doc

大连交通大学信息工程学院2012届本科生毕业设计（论文）外文翻译

大连交通大学信息工程学院
毕业设计(论文)任务书

题 目 精彩无限VIDEO娱乐系统

务及要求：　
1.设计（研究）内容和要求　
任务：
1、 调查精彩无限VIDEO娱乐系统当前技术的发展近况，完成实习报告，字数不少于3000，第三周交给指导老师。
2、 结合自己实习情况安排进度，填写进度计划表，第二周完成后交给指导老师签字，并严格执行。
3、 按照软件工程思想，独立完成系统的设计和程序开发，完成代码估计2000行左右。
4、 用JSP.NET技术实现精彩无限VIDEO娱乐。
5、 程序简洁，算法可行，运行情况良好。
要求：
6、 每周和指导老师至少见面沟通一次，回报课题进展情况，接受老师询问。
7、 接到任务书后，查阅与题目及专业相关的外文资料进行翻译，要求不少于10000个外文字符，译出汉字不得少于3000，于第四周交给指导老师审阅。
8、 毕业设计第13周完成毕业论文的装订，并由指导老师评阅。论文要求12000字以上，包括综述、系统总体设计、系统实现、性能分析、结论等。
9、 教学第13周通过中软及教研室组织进行软件验收，验收时要提供软件使用说明书。
10、 于第13周提出毕业答辩申请并签字。
11、 第14 周答辩，要求制作PPT
2.原始依据
通过大学几年的学习，已经学习了诸如软件工程、数据库原理及应用、数据结构、C++、Visual Basic、JAVA等多门程序设计语言和网络等基础知识和专业知识，学生有能力而且可以独立完成小中型项目的设计与开发。学校现有设备和环境可以提供给学生实习和上机，而且具有专业老师可以指导学生。

3.参考文献
[1] Scott Stanfield. Ralph Arvesen.Visual C++开发人员指南[M] .北京:机械
业出版. 2001
[2] Danny Ayers. Java服务器高级编程[M] .北京:机械工业出版社.2001
[4] 李仲.顾泽月.唐耀. Premier.实用教程[M] .北京:人民邮电出版社.1999
[5] 刘卫忠.墙威等.实时VOD系统的调度策略[J] .计算机工程与应用.2005.11
[6] 冒东奎.冯晓鑫.景永俊.以RM和ASF流媒体文件格式在局域网实现影视点播
[7] 朱晴波.周刚.陈道蓄.VOD服务器中共享1/0流的关键技术.计算机工程与应用.2002.14
[8] 荣波,周旗.VOD系统中QoS管理的框架结构与对象模型[J]，计算机工程与应用2000.8
[9] 郑仁祥.VOD系统中信道调度问题综述[J] .东北大学学报(自然科学版)2002
[10] 胡飞.朱耀庭.Internet视频点播差错控制[J] .计算机研究与发展2002.1
[11] 陈文周.基于以太网实现VOD的方法研究[J] .电视技术.2002.3
[12] W Tavanapong. Kien A. Hua. and J. Wang. A framework for supporting previewing and VC R operations in a low bandwidth environment. In ACM Conference on Multi media Systems:3 03^-312.Seattle. U.S.A..November 1997
[13] W.Feng.F .Jahanian,and S.Sechreat.P roviding VRC functionalityina constant quality video on-demand transportations ervice.k Procofte IEEEIn t 1 Confon Multimedia Systems 9 6.Hiroshima, Japan.June 1996
[14] T.S.Chua.J.Li,B.C.Ooi. and K.L.Tan.Disks ripings trategyf orl arge video on-demand servers. In the 4th ACM International Multimedia Confer ence:297-306.Boston.MA.USA.November 1996
[15] T. Ng and R.Dilek. Statistical modeling and buffer allocation for mpeg Streams.InS .“.Chung editor. Multimedia Information Storage and Management. chapter 6 :1 47- 162.KluwerAcademicPublishing. 1996

　指导教师签字：
教研室主任签字：
　　　　　　　　　　　　　　　　　　　　　 　　年　　月　　日
大连交通大学信息工程学院
毕业设计(论文)进度计划与考核表
学生姓名
李国鑫
专业班级
计算机08-1班
指导教师
刘品
于林林
本课题其他人员

题　目
精彩无限VIDEO娱乐系统
日　期
计划完成内容
完成情况
指导老师检查签字
第1周
拟订《毕业论文进度计划与考核表》

第2周
完成实习或调研报告

第3周
提交外文文献翻译资料

第4周
系统概要设计阶段

第5周
系统详细设计阶段

第6周
系统编码实施、完成论文初稿

第7周
完成系统编码实施

第8周
系统编码调试、提交论文初稿

第9周
完成系统编码调试、完善毕业论文

第10周
完成撰写毕业设计论文编写及代码测试

第11周
完成论文终稿、准备毕业论文打印、装订

第12周
提交毕业论文终稿及代码

第13周
完成毕业论文

第14周
毕业论文答辩

指导教师签字：：　　　　　　　　　　　 年 月 日

注：“计划完成内容”由学生本人认真填写，其它由指导教师考核时填写。

大连交通大学信息工程学院
毕业设计(论文)外文翻译

学生姓名 李国鑫 专业班级 计算机08-1 班
指导教师 刘品 于林林 职 称 高工　 讲师
所在单位 　信息科学系软件工程教研室
教研室主任 　 宋丽芳

完成日期 2012 年 4 月 13 日
Brief. Net

. NET is the Microsoft XML Web services platform. XML Web services allow applications to communicate over the Internet and share data, is used regardless of which operating system, device or programming language. Microsoft. NET platform to create XML Web services and integration of these services are required. Benefits for individual users is seamless, compelling experience.
. NET is Microsoft's used to implement XML, Web Services, SOA (service-oriented architecture service-oriented architecture) and agility techniques. Of technical staff, to really understand what is. NET, you must first understand. NET technology and the emergence of the reasons it wants to solve the problem, we must first understand why they need XML, Web Services and SOA. Microsoft's technical staff will generally be seen as a platform vendor. Microsoft's technology platform to build, and technical staff in the technology platform to create applications. From this point of view,. NET can also be defined as follows:. NET is Microsoft's next-generation technology platform for agile business to build interoperability of applications, these systems are standards-based, China Unicom, and adapt to change, stable and high performance. From a technical point of view, a. NET applications run on a. NET Framework applications on top. (More precisely, a. NET is an application to use. NET Framework class library to write, and run on the Common Language Runtime Common Language Runtime on the application.) If an application with the. NET Framework has nothing to do, it can not be called. NET program. For example, not only is the use of XML. NET applications, using only a Web Service SOAP SDK is not called. NET applications.
Composed of. Net component software technology, one of the components, "smart" client application software and operating systems, including PC, PA, phone or other mobile devices via the Internet, using Web Services technology, users can at any time, any locations can get the required information and services. For example: You can read the news on the phone, order tickets, visit online photo albums and so on. Now we assume a scenario, such as the use of the company's CRM system, applied. NET solution after all the business people will be able to directly access via mobile phone or PDA customer information.
Now
Web Services are. NET's core technologies. So what is Web Services do? As the Web is a new generation of user interaction with the application the way, XML is the next generation as means of communication between programs, Web Services is a new generation of computers and computer data transmission between a common format that allows different computing systems easier data exchange. Web Services have the following features: Web services allow applications to share data; Web services distributed a code unit; internet data exchange based on XML, a common language, to achieve a cross-platform, cross-operating system, cross-language. That Microsoft's ASP and Web services, what difference does it, ASP is still a product of a centralized computing model, but is wrapped in a layer of the Internet coat. However, it is a very different Web Services wizard, it adhering to the "software is service" mantra, and conform to the trend of distributed computing model. And it is in a form and different from previous software. This component model, compact, single, for the developer in terms of development costs low.
Web services are not in here that Microsoft invented, the same does not belong to Microsoft's proprietary. Web services is an open standard, and HTTP, XML, SOAP same. They are an industry standard rather than the Microsoft standard, WS-I is to promote Web Services interoperability of the Union, was originally initiated by IBM and Microsoft, other members include BEA System, Hewlett-Packard computer (HP), Oracle (Oracle) Intel (Intel) and SUN computers (Sun Microsystem). Today, most present on the network actually does not use Web services. NET framework, Web services and interoperability properties, you can also use the Windows developers to call client running on Linux Web services in the above method.
The interface specification issues mentioned earlier, in. NET, Web service interfaces typically use Web Services Description Language (WSDL) description. WSDL uses XML to define such a standard interface operations and input and output parameters, looks like COM and CORBA Interface Definition Language (IDLS) Interface Definition Languages. Interface defines a number of protocols must be used after the call interface, such as the SOAP protocol, SOAP is a source called XML RPC (XML remote procedure calls remote procedure calling) protocol, Java is based on XML-RPC has developed its own JAX-RPC protocol used to invoke Web Services. Publish and access Web Services interface to use UDDI, and here we need to know WSDL definitions using XML Web Services interface to access via SOAP Web Services, Web Services on the internet looking for on line use of UDDI, Web Services will be more last lesson introduction. Server architecture - Microsoft Windows Server SystemMicrosoft server architecture to provide the best-Microsoft Windows Server System-easy release, configuration, management, scheduling Web Services. In order to meet the needs of distributed computing construct a series of Microsoft server systems, these systems are all built-in security technologies to support XML, this accelerated system, applications, and the same application using Web Services integration between the partners.
On. NET
. NET Framework environment
Primary composition of CIL and CLR. CIL is a description of the operating environment, including the general system, base class library, and a machine-independent intermediate code, called the Common Intermediate Language (CIL). CLR is the password to confirm the operation of the platform in line with CIL. Before the implementation of the CIL, CLR compile time directive must be converted to the original machine code.
All CIL (Common Intermediate Language) can be through. NET self-expression. CLR checks the original data to ensure the correct method is called. The original data is usually generated by language compilers but developers can also use the customer attributes to create their own metadata.
If a language generated CIL, it can also be invoked by using the CLR, so that it can be used with any other. NET language interact to generate the data. CLR has been designed for the operating system independence.
When a body is loaded assembly, CLR perform a variety of tests. Two of the tests is to confirm and verify. In recognition of the time, CLR checks if the body assembly contains valid metadata and CIL, and check the correctness of the internal table. Verification is not so accurate. Verification mechanism checks whether the code will execute some "unsafe" operations. Verification algorithm used is very conservative, sometimes leading to some "safe" pass code verification. Compilation of unsafe code in the body only has a "skip verification 'permission will be executed, usually this means that the code is installed on this machine.
2.0 is Microsoft's latest version is built on the common language runtime programming framework that can be used to develop powerful web server applications. 2.0 not only greatly improve the efficiency of the control code is also doing well. And support for web controls features and languages. To improve security, to manage and highly scalable.
technology from 1.0 to 1.1 changed little, but the upgrade to 2.0, has undergone a considerable change in the development process, Microsoft in-depth market for a large number of developers and software users, have carried out fruitful research, and assign a codename, 2.0 the core design goals, you can use one word to describe - simplified. Because it is designed to reduce the number of the application code over 70% change in the past that need to write a lot of repeated lines of code status, write very little code as possible to complete the task. For software engineers, 2.0 web development is an important milestone in the history!
In any case,. NET 4.0 has been opened to the door when New Year to usher in a high profile round of applause. The majority of technology enthusiasts will wait too long, you can feel the C # development of another change. With the. NET 4.0 release in 2009, our concern for the C # 4.0 will also be increasing.
As we all know, C # is statically typed language. In many cases, to provide "dynamic" behavior, is often what happens, for example, at run time through reflection. NET type, called dynamic language object, access COM objects, etc., can not get a static type. Therefore, C # 4.0 introduced a new keyword and dynamic, also introduced to improve the static and dynamic objects type of interactivity, which is dynamic lookup (Dynamic Lookup)
As an object can represent any type, dynamic decision making in the run-time type, method invocation, property access, delegate calls are dynamically assigned. Meanwhile, the dynamic characteristics is also reflected in building a dynamic object in C # 4.0 implementation IDynamicObject interface type, you can completely define the meaning of dynamic operations, through the C # compiler as runtime components from static compiler to complete the operation delay
In the implementation process, C # runtime binder based on runtime information, obtain d by reflecting the actual type Foo, then Foo MyMethod method on the type of method lookup and overload resolution, and the calling, which is The secret behind the dynamic invocation: DLR. In. NET 4.0 will introduce an important underlying component DLR (Dynamic Language Runtime, the dynamic language runtime), in addition to the foundation to support dynamic lookup, DLR also as infrastructure like IronRuby, IronPython dynamic languages such as Unified interoperability mechanisms. In short, dynamic programming C # in the following areas will be a huge change
The emergence of parallel computing is the inevitable result of the development of computer science, with the rapid development of computer hardware, multi-core processors are already working on pre-existing fact, and the traditional programming model must be compatible with the new hardware environment in order to achieve a reasonable performance of the computer application results. Anders master with the words: in the next five to 10 years, parallel computing will become a mainstream programming language can not be ignored in the direction, and 4.0 for C # concurrency fired the first shot.
The future. NET Framework 4.0 will be integrated TPL (Task Parallel Library) and PLINQ (Parallel LINQ), which also means that future C # 4.0 we can apply parallel applications in a unified scheduler work carried out under the coordination of parallel hardware, This will greatly improve application performance while reducing the complexity of the existing concurrency model.
. NET3.0 new features
Implicitly typed local variables
This feature is very simple, some of JavaScript's shadow, we can use the uniform use of "var" keyword to declare local variables, and no longer need to specify the exact type of a variable, the exact type of the variable declaration can infer the initial value of variable out. In this way, we can greatly simplify the workload of the local variable declaration.
Special attention, due to the variable's type is inferred from the initial value of the variable, so variable in the statement must also specify the initial value for the variable. And is not no type of variable, the variable once initialized, the type of the set, in the future can only store a certain type of value.
Sometimes we need to temporarily save the intermediate results of some operations, especially when these intermediate results are composed of multiple parts, we often have to declare a new type, to facilitate the prese