微浸润性肺腺癌生存率:又一段翻译 要人工翻译

来源:百度文库 编辑:高校问答 时间:2024/05/05 21:59:24
本论文的研究课题是陕西21世纪初高等教育教学改革工程项目(0204014),目标为构建网络化的积件组合平台,为我国第二代CAI教学课件建设提供技术支持。网络化远程教学环境是现代教学发展的方向,而基于积件(Integrable Ware)思想的组合平台逐渐成为教学上流工具。本文围绕组合平台系统实现以及运行环境的设计展开研究,主要研究工作包括以下儿个方面:
目前的积件系统人多是采用专用软件,将积件组合成固定不变的课件,层次性差、表现方式单一。本论文提出了利用元数据的概念使积件的组成可以随意组合和调整,并从数据类型和数据来源两方面扩大了积件库的资源范围。利用XML数据将表示和过程分离,对不同来源的数据进行集成的优势以及层次化的树形结构特点,采用XML文件的课件形式。达到了既体现课件的层次性,同时可以对任何一个层次的内容进行重组和再利用的效果。
在对多种数据管理进行比较后,确定对积件资源采用文件管理系统与关系数据库结合的方法,将多媒体文件本身以文件系统的方式存储,用关系数据库管理其说明。利用文件系统在存储方面的优势,结合关系数据库较强的查询能力。在查询速度和文件管理两方面取得了最佳效果。
在研究了当前网络环境以及教学现状后,确定采用基于.NET技术的C/S和BlS相结合的混合结构,不仅保证网络化积件平台的可用性,同时在非网络化条件下,可以将组合平台作为一个独立的课件编写和演示工具使用。
Microsoft.NET被称作“下一代视窗服务,=NGWS倒ext Generation Web Service)o采用Microsoft .NET作为开发平台,C#.NET作为组合平台开发语言,.NET开发环境对XML提供专门的接口,利用C#允许XML数据直接映射为结构数据类型以代替类的特点,提高了系统灵活性。
在平台网络环境的构建中,服务器端采用Helix Server提供网络视频数据流服务。同时
采用MDS加密技术、权限管理、开放端口限制等多种方法维护系统的安全.
关键词计算机辅助教学、课件、元数据、积件、、加密、MDS

Shaanxi is the subject of this thesis research at the beginning of the 21st century higher education teaching reform project (0204014), the goal of a network platform from pieces portfolio for the building of the second generation of Cai teaching materials to provide technical support. Networked distance learning environment is the direction of development of modern teaching, and based on the accumulated cases (Integrable Ware) and the combination of platform Creek gradually become teaching tools. All around the mix and the realization of operating system platform designed to study the environment, the main research work include the following abuse of : The pieces of the current system people are using specialized software to store pieces of the portfolio into fixed when the level of poor, single manifestations. The paper presented the concept of using metadata to store pieces of the composition can be arbitrarily portfolio and adjustments from the data types and data sources and expand the plot of the two resources. Will be expressed using XML data and the separation process for the integration of data from different sources and levels of the tree advantage structural characteristics, the use of XML documents using forms. Both reached the level of sexual expression when, at the same time on any one level of restructuring and re-use of content results. In comparison, for a variety of data management, identifying resources for the use of documents from the relational database management system integrated approach to multimedia document itself in the form of a document storage system approach, using its relational database management statement. Using documents stored in the system's advantages, combined with strong relational database enquiries. Enquiries speed and document management in both achieved the best results. In the current network environment, as well as research the status of teaching, the use of established technology C/S and BlS 基于.NET combining mixed structure, not only to ensure network from the availability of platform, while non-network conditions, could be a combination of platform independent software development and demonstration of tools used. Microsoft.NET known as "next generation Windows services, =NGWS opposing 7049-5455 Generation Web Service) o Microsoft. Net as a development platform as a combination C#.NET platform development language, . net development environment to provide specialized XML interface using XML data directly shine upon C# allow for the type of data structure to replace such features, and enhanced system flexibility. of a network environment in the platform, Helix Server to provide network server-use video data stream. using MDS encryption technology, management competence, open ports on the system and other methods of security.
好累啊,不能保证全对欧~大致是对的