开拓农村市场乡镇企业发展的战略突破点

当前市场问题已成为乡镇企业发展的主要瓶颈制约,而农村市场潜力巨大,前景广阔。不久前,江泽民总书记在苏南视察时指出:“谁率先打开农村市场,谁就能获得大发展的广阔天地”。同时,他用“近水楼台先得月”这句话,指出了乡镇企业在开拓农村市场中的优势。我们应把开拓农村市场摆到十分重要的位置,推动乡镇企业实现新的飞跃。 1 乡镇企业开拓农村市场有着得天独厚的优势。应当吃好“窝边草”。乡镇企业植根于农村,与农村经济血肉相连,下大力     

Peer-Paired Collaboration for On-Demand Streaming Applications and an Improved Error Recovery Technique

Previous studies on streaming media networks have mainly focused on how to conserve the network bandwidth, especially the Internet backbone bandwidth, while maintaining a desired quality. This paper tackles the problem from another perspective, trying to improve the individual streaming quality while not increasing the backbone traffic. Specifically, we apply a peer-paired collaborative streaming architecture that exploits the power of peer-to-peer networking and extends the peer-paired collaboration from a live broadcasting scenario to the more general on-demand streaming scenario by introducing a unique catch-up scheme. Experimental results show that the peer-paired collaboration can bring about a significant performance gain for on-demand streaming application scenarios, in addition, we propose a forward error correction based error recovery technique that can resist up to 50% packet losses regardless of whether the losses are independent or shared.     

试析大学生文化的本质特点

本文试图从区分校园文化与大学生文化的概念入手,阐析大学生文化是一个复杂的亚文化系统,进而概括出大学生文化具有的几个本质特点：社会历史制约性、先导性、偏离性、多元性、活跃性以及总体性。     

探究、体验、交往--论基础教育教学观念的转向

基础教育教学改革，观念的更新是先导，从教育发展的社会历史性考察，当今教学观念正经历三种转向，即重视探究、体验和交往，这种转向为基础教育教学改革提供了一个新的理论视野和观点。     

传统医药知识利益保护新制度的构建

针对传统医药知识的特殊性,对新制度中应予解决的关键问题进行分析讨论,为制定一部专门保护、统一协调、公平分享与标准明确的传统医药知识产权保护法提供参考。     

Streaming Media over a Color Overlay Based on Forward Error Correction Technique

The number of clients that receive high-quality streaming video from a source is greatly limited by the application requirements, such as the high bandwidth and reliability. In this work, a method was developed to construct a color overlay, which enables clients to receive data across multiple paths, based on the forward error correction technique. The color overlay enlarges system capacity by reducing the bottlenecks and extending the bandwidth, improves reliability against node failure, and is more resilient to fluctuations of network metrics. A light-weight protocol for building the overlay is also presented. Extensive simulations were conducted and the results clearly support the claimed advantages.     

浅析高校的法制化管理与和谐校园建设

高校是社会的有机组成部分,和谐高校的建立,对促进社会和谐具有极其深远的意义。与此同时,高校管理工作的法制化建设有利于提高大学生的民主法制意识,可以加快社会主义和谐社会的发展。该文从上述观点出发,系统地阐述了高校的法制化管理与和谐校园建设之间的辩证关系。     

校本课程开发与教师角色转变

校本课程开发作为国家课程体系中的一块重要内容已经被提上了实施日程，教师在校本课程开发中必须完成相应的角色转换才能与其要求相适应。校本课程开发要求教师从“消费者”到“生产者”，从“执行者”到“决策者”，从“施教者”到“研究者”，从“主导者”到“促进者”等几个方面完成角色转变。     

Efficient Error Recovery Techniques in a Novel Multimedia Streaming Framework with Peer-Paired Collaboration

Research on application-level multicast seeks to combine the merits of unicast and IP multicast while avoiding their drawbacks. Efficient error recovery in such a system is still a difficult problem. Current research is primarily focused on developing local error recovery techniques, but these techniques would not work with shared losses, which often occur in application-level multicast. This paper presents a novel multimedia streaming framework called peer-paired pyramid streaming (P3S) which is basically a hybrid client/server and peer-to-peer structure. In P3S, clients are hierarchically organized with those at the same level coupled as peer pairs. P3S uses some controlled delay between packets that are vulnerable to shared losses to reduce the shared losses. The technique is verified by both theoretical and experimental results.