网格计算

网格计算是利用网络中一些闲置的处理能力来解决复杂问题的计算模式。     

基于J2EE架构的事务管理应用研究

描述了基于J2EE架构的事务管理在项目中的应用,研究了J2EE项目中使用事务的方法,分布式环境中的事务处理及两阶段提交方法实现,分析总结了事务应用中应遵循的习惯.     

论现代体育产生之必然性

从资本主义生产方式与人的关系这一独特的视角来探讨现代体育产生的必然性，并且对二者在现代社会中的关系和功能提出了独特的见解，并由此揭示现代体育诞生必然性的根源。     

“分组教学实践”项目总结与探讨

以高等职业教育为出发点,紧紧依托软件职业教育的培养模式和办学体制,对实践性软件技术课程的课程特点,教学方法,授课技巧,发展方向以及激发学生学习兴趣等方面做了有益的总结和探讨。     

The musical field

This article examines musical taste, as revealed by the Cultural Capital and Social Exclusion survey. It shows that musical taste is highly divided and contentious, with large numbers of people intensely disliking certain genres of music. It shows the existence of two distinctive musical taste communities, one linking taste for rock, electronic, urban, world and heavy metal music, and the other linking classical music and jazz. Tastes for specific musical works do not easily map onto musical genres, and are less closely correlated with each other. Using logistic regression, it is shown that age and ethnicity in particular, and gender, educational qualifications and occupational class, strongly condition taste for both musical genres and works.     

初探合理分组与组合在青少年中长跑训练中的应用

结合青少年运动员的身心特点,就中小学田径队中长跑训练中的大小分组、男女分组、长短组合、优差组合等合理分组与组合问题,探讨科学有效的分组与组合训练方法,通过优势互补,提高训练效果,达到共同提高的目的。     

论无理数

将完全k方数的概念由N推广到R~ ,从而,得到一个很有用的引理,由之推出一系列有关无理数的命题.此外,关于2~(1/2)~(2~(1/2)),2~(1/2)~(2~(1/2))及α~β(α为≠0,1的代数数,而β乃不为有理数的代数数)的无理性的简单证明,也分别在此地给出.     

Mobile Agents for Distributed and Heterogeneous Information Retrieval

The heterogeneous, distributed and voluminous nature of many government and corporate data sources impose severe constraints on meeting the diverse requirements of users who analyze the data. Additionally, communication bandwidth limitations, time constraints, and multiple data formats impose further restrictions on users of these distributed data sources. In this paper, we present an Agent-based Complex QUerying and Information Retrieval Engine (ACQUIRE) for large, heterogeneous, and distributed data sources. ACQUIRE acts as a softbot or interface agent by presenting users with a view of a single, unified, homogenous data source, against which users can pose high-level declarative queries. ACQUIRE translates each such user query into a set of sub-queries by employing a combination of planning and traditional database query optimization techniques. ACQUIRE then spawns a set of mobile agents corresponding to these sub-queries, which in turn retrieve the data from various distributed data sources by dynamically optimizing the retrieval strategy as it is carried out. These mobile agents carry with them data-processing code that can be executed at the remote site, thus reducing the size of data returned by the agent. When all mobile agents have returned, ACQUIRE filters and merges the retrieved data and presents the results to the user. While the system is still very much a work in progress, current validation experiments on simulated NASA Distributed Active Archive Centers (DAACs) have demonstrated that complex queries can be effectively decomposed and retrieved by this approach.     

相位法测光速

通过对本实验的测量,熟练掌握用光速测定仪测量光速的实验方法,了解相位法测量光速的频率和波长,从而确定光速的实验原理。     

分布式认知视角的企业知识生态系统研究

归纳总结国内外关于分布式认知与知识生态系统的研究现状,分析分布式认知理论与知识生态系统的相关性,探讨分布式认知理论对企业知识生态系统的指导作用。