中山市中山图书馆推广社会阅读的尝试

本文以中山市中山图书馆为例，浅谈公共图书馆如何通过推广社会阅读，拓展自身的生存空间，充分体现公共图书馆社会教育职能，为构建学习型社会、和谐社会奠定基石。     

聂耳当"学生军"的一段生活

有人说:透过一滴水珠,可以看到一个大海.透过一段鲜为人知的经历,我们也同样可以看到一个初生牛犊不畏虎的聂耳.     

档案文化传播渠道比较研究

本文通过对五种档案文化传播渠道的社会功能、传播特点及受众情况等方面的比较分析．提出拓展档案文化传播渠道，共同营造一个档案文化传播的良好环境．在社会大文化建设中提升档案文化的价值。     

提升图书馆读者服务质量的五大战略

现有研究主张服务是图书馆的重要功能。本文以此为基础，提出了提升图书馆读者服务质量的五夺战略。它们是：读者服务需求分析战略、读者服务质量的现场控制战略、富有图书馆特色的服务市场营销战略、技术支持战略、组织保障战略。     

文献标引中名称主题的规范控制

笔者就所了解的有关名称主题标引相关方面的问题及其产生的原因作了简要分析,并提出了观点和想法。     

新趋势、新逻辑与新形态——区域媒体的形成轨迹与发展趋势解读

中国地方广电的自我发展逻辑正在成型与强化。“四级办台”政策之后,地方广电开始在“行业”与“地方”双重力量下发展;此后,“行业”线索开始复杂,利益博弈日渐浮出水面,并困扰地方广电发展。取消“四级办台”与“广电集团化”成为行业高层大举调配行业利益的集中表现,压力之下,地方广电诉诸地方政治和地方经济来缓解竞争与发展的压力。而随着地方政治经济的日渐成熟,地方广电开始作为地方发展与建设的力量,促成了一种地方政治、经济与媒体的力量合流。就此,地方广电的平台与触角开始延伸,一种“区域化”的发展倾向也就酝酿其中。     

张潮交游考

张潮,字山来,号心斋,安徽歙县人,清初文学家、编撰家、刻书家,他在当时文坛上影响力较大。张潮一生极重交情,在当时文人中,以好交游闻名。本人根据张潮编撰的《尺牍友声》、《尺牍偶存》和其他著作的序、跋、评语、题辞等为原始资料,对他们的交往略加考索。     

A pipelined architecture for distributed text query evaluation

Two principal query-evaluation methodologies have been described for cluster-based implementation of distributed information retrieval systems: document partitioning and term partitioning. In a document-partitioned system, each of the processors hosts a subset of the documents in the collection, and executes every query against its local sub-collection. In a term-partitioned system, each of the processors hosts a subset of the inverted lists that make up the index of the collection, and serves them to a central machine as they are required for query evaluation. In this paper we introduce a pipelined query-evaluation methodology, based on a term-partitioned index, in which partially evaluated queries are passed amongst the set of processors that host the query terms. This arrangement retains the disk read benefits of term partitioning, but more effectively shares the computational load. We compare the three methodologies experimentally, and show that term distribution is inefficient and scales poorly. The new pipelined approach offers efficient memory utilization and efficient use of disk accesses, but suffers from problems with load balancing between nodes. Until these problems are resolved, document partitioning remains the preferred method. Alistair Moffat was supported by the Australian Research Council, the ARC Special Research Center for Perceptive and Intelligent Machines in Complex Environments, and the NICTA Victoria Laboratory. William Webber and Justin Zobel were supported by the Australian Research Council. Ricardo Baeza-Yates was supported by Grant P01-029-F from Millennium Initiative of Mideplan, Chile; and by the University of Melbourne as a visiting scholar at the time this project was undertaken.