砂轮变速磨削系统稳定性图解析

对变速磨削系统稳定性进行了理论分析，通过坐标变换将变速磨削系统的变时滞微分方程转换为周期系数的常时滞微分方程。应用参数激励系统的Ｆｌｏｑｕｅｔ理论求得变速磨削系统的特征方程，并对变速磨削系统的稳定性图进行求解。结果表明，变速磨削能有效地提高磨削系统的稳定性。     

谈物质的状态

从分子热运动的微观角度阐述了物质的5种存在状态,提出了关于物质的状态教学改革的建议。     

从MSCS获取系统状态数据

介绍在 Windows NT服务器群软件 MSCS上获取系统状态数据 (包括系统配置数据和系统性能数据 )的方法 ,它是在 MSCS上实现动态负载平衡的技术关键     

改进的总包性立方型状态方程

改进了Ｍａｒｔｉｎ提出的总包性立方型状态方程．验证表明，Ｍａｒｔｉｎ总包性立方型状态方程为本文改进总包性立方型状态方程的特例，由改进后的总包性立方型状态方程可推导出迄今为止前人提出的各种类型的立方型状态方程，且较Ｍａｒ－ｔｉｎ方程的推导更为简捷．此外，在Ｖｅｒａ－Ｐｒａｕｓｎｉｔｚ的普遍化ｖａｎｄｅｒＷａａｌｓ稠密流体理论基础上，结合本文给出的普遍化ｖａｎｄｅｒＷａａｌｓ流体的分子位能表达式，导出了改进的总包性立方型状态方程     

Use of Internet Technology for the Improvement of Execution Management in Geotechnical Engineering Projects

An internet-based information and monitoring platform for the specific requirements of geotechnical engineering projects is presented. The platform is based on a hybrid-model approach consisting of a model-based information management system and a resource management system, the latter also referred to as DCMS. Project key information can be accessed via the main user interface, the "graphical navigator". The graphical navigator provides also a direct access to additional information in the DCMS. Prompt reac-tion in exceptional situations as well as in daily work gets an extensive support. In practical applications it has been proven that this platform seems to be an adequate tool especially for risk assessment and management in geotechnical engineering projects. Components and advantages of the platform as well as ex periences from the applications are presented and discussed in the paper.     

走向风险管理的内部控制研究

针对层出不穷的财务舞弊案例，新COSO框架下对内部控制和风险管理进行了新的补充和界定。通过对风险管理和内部控制的分析比较，在新框架的基础上，针对我国企业内部控制方面存在的弊端，提出企业内部控制将发展为更全面的风险管理。     

谈杜诗中的赠亲怀亲主题

亲情是成就伟大杜甫的重要人格基石。品读杜甫的赠亲、怀亲诗,可以看到诗人对亲情、宗族血缘和亲戚关系的理解,可以还原诗人的生活处境和心情,可以分析其思想人格中的责任意识、伦理意识和家国意识,可以走进诗人真实的心灵世界并透视其伟大的人性光芒。     

带干扰的双险种复合负二项风险模型

基于保险公司在实际经营中收益所具有的不确定性，在现有文献模型的基础上建立了一个更现实的风险模型即带干扰的双险种复合负二项风险模型，给出了其破产概率的表达式及其相应的Lundberg不等式.     

MICROSTRUCTURE OF AGGREGATES IN DISPERSIONS DESCRIBED IN TERMS OF RADIAL DISTRIBUTION FUNCTION

Following a sticky particle model and its computer simulation scheme proposed in the previous papers, the motions of particles in both 2-and 3-dimensional shear flow fields are simulated. At a steady state of clustering process, the radial distribution functions are calculated to precisely describe the microstructure of aggregates in dispersions, and the configuration of particles is displayed,which gives a direct view of microstructure. It is found that (1) the kind of the microstructure transforms from compact clusters to a loose network as the concentration of particles increases; (2) the microstructure is independent of shear rate which only dominates the size of clusters formed at steady state.     

利用正则表示式描述和设计时序机

用正则表示式来描述时序机的逻辑特性是一种十分有吸引力的数学方法.可是现有文献所提供的这类方法有种种条件,这就大大限制了它的应用.本文试图摆脱这些约束,构造一种普遍适用的正则描述法,并用它来设计时序机.