基于区分矩阵的最小规则挖掘算法

从区分矩阵的概念出发，分析了区分矩阵与属性约简的关系，并在此基础上设计了一种基于对区分矩阵进行缩减的规则挖掘算法。该算法使得规则提取过程相对清晰和简单，当数据量很大时，该算法降低了计算的复杂性．通过实例验证了该算法的有效性．     

论致使的语义核心--致使力的传递

致使是一个重要的语言范畴,表达的是致使者通过致使力作用于被使者,导致被使者产生一定的致使结果。致使有其自身的认知经验基础——驱动图式,反映的是致使者与被使者之间的驱动关系。在此基础上,提出致使的语义核心是致使力的传递,它包含作用、始变和状态三个环节。然后,分析了致使力传递的语言表现,探讨了致使力传递的类型和方向性、意识性、预期性、现实性、连续性和多样性等诸多特征,以期对揭示致使的本质有所裨益。     

基于双核心处理架构的视频监控系统的设计

提出一种基于嵌入式系统和双核心处理器架构的数字视频监控系统的设计方案。该系统基于ARM/FP-GA双核心嵌入式技术,具有低成本、高质量远程数字视频监控的优点,适合复杂的视频处理和控制逻辑。通过设计高速SRAM和VGA输出接口,实现双核心处理器间的高速通信。与传统的监控系统相比,该系统能大大降低组网成本和减小体积重量。系统性能测试结果表明,双核心处理架构能提高系统的可靠性和灵活性。     

Hemiring-homomorphisms,Stone Čech Compactification and Hewitt Realcompactification

In this paper the Stone-ech Compactification and Hewitt Realcompactification of a Tychonoff space X are shown as the spaces of Hemiring Homomorphisms from the hemirings C^*₊(X) and C₊(X) to IR₊ respectively.AMS Subject Classification: 2000, 54E25     

Noncooperative selection of the core

For bargaining environments given by transferable utility characteristic functions that are zero-normalized and admit a nonempty core, we find a class of random-proposer bargaining games, generalized from Okada (1993), such that there is a one-to-one mapping from these games to the core, each game realizes the corresponding core allocation as its unique (ex ante) Stationary Subgame Perfect Equilibrium (SSPE) payoff profile, and every ex post SSPE payoff profile converges to the core allocation as the discount factor goes to one. The result has a natural interpretation in terms of bargaining power. Received: December 2000/Revised: August 2002     

解放和发展生产力是邓小平理论的核心

解放和发展社会主义社会的生产力,是邓小平理论的核心。这一重要思想不仅具有完整的体系和丰富的内涵,也具有深厚的理论根基和坚实的实践基础。深刻领会这一思想对于我们更好地学习和实践"三个代表"重要思想具有重大意义。     

A Covering Space with No Compact Core

This note describes an example of a compact aspherical 2-complex X with a covering space , such that is finitely presented but has no compact core.I thank John Stallings for being my 'Senior Scientist' in 1996–1997, and for many superimaginative e-mails that led to this relationship.     

Mechanism of inversion metallogeny of quartz vein type gold deposits in the Xiaoqinling region

There are a lot of important gold_bearing quartz veins in the Xiaoqinling metamorphic core complex. The quartz veins are strictly controlled by shear zones. Stress analysis indicates that the metallizing process of the Xiaoqinling gold deposits of quartz vein type can be divided into two stages. At the first stage, the shear zones were formed in an extensional environment, and the temperature was higher and the buried depth was greater; at the second stage, the brittle thrusts were superimposed in ductile shear zones after the tectonic stress field turned from the extension to compression. The ore_bearing fluids were concentrated in these weak positions, and the gold deposits of quartz vein type were developed.     

人类乙型肝炎样病毒核心蛋白中第7位疏水性氨基酸重复肚段区域的突变可以抑制病毒核衣壳的组装

人类乙型肝炎病毒的核衣壳由核心蛋白的二聚体所组成．但是,核心蛋白亚单位与亚单位之间相互作用的机制至今尚不清楚．研究发现,在人类乙型肝炎样病毒──土拨鼠肝炎病毒（WHV）核心蛋白的氨基端,存在着4个保守的疏水氨基酸残基（氨基酸位置101～102）．它们分别是亮氨酸101,亮氨酸108,缬氨酸115和苯丙氨酸122．这4个疏水氨基酸残基以每隔6个氨基酸残基而重复出现1次．它们被称为“第7位疏水性氨基酸重复肽段（hhr）”．由于蛋白质中的疏水键往往在蛋白质的相互作用中起重要作用,因此就在培养细胞系统中研究WHV核心蛋白的hhr区域在…