PC看门狗的原理与实现

根据单片机防止程序飞出的原理，创新性的提出了PC机在无人看管下，计算机如何判断当前的运行状态，以及在无法相应其他进程时，实现自动重启的方法。从单片机的看门狗实现原理，可在PC机上实现类似看门狗的功能。介绍了PC WATHDOG的软硬件实现，以及如何设计串口通讯协议，使PC WATCHDOG通过串口接收发送通讯帧和控制帧，进行交互，达到看门狗的功能。     

基于Smart Client的工程管理信息系统框架分析

随着中国基础建设高峰到来，工程项目管理信息系统（PMIS）必将是大型基建工程项目管理的重要手段。阐述了基于Smart Client模式PMIS的优点，并着重分析系统基本框架，提出了一般性设计原则，为PMIS开辟一条全新的研发思路。     

我国西南民族地区与东部地区农村发展差距研究

比较分析我国西南民族地区与东部地区农村发展差距及原因,提出缩小农村发展差距的对策。     

An algorithm for computing principal points with respect to a loss function in the unidimensional case

In Flury (1990) the k principal points of a random vector X are defned as the points p(1),..., p(k) minimizing EX–p(i)²; i=1,..., k. We extend this concept to that of k principal points with respect to a loss function L, and present an algorithm for their computation in the univariate case.     

工科物理实验改革与实验题目挑选

面对跨世纪人才培养的需要,工科物理实验教学改革任务在急,物理实验课程要坚持、多研究、要发展。文中就《工科物理实验课程改革》专题研究的实践与体验,对坚持既定改革目标、克服现在主要弊端、突破“梯度”高难点和挑选题目原则提出了新的见解。     

Task partitioning in new product development teams: A knowledge and learning perspective

R&D alliances and outsourcing elements of the new product development process are now commonplace practices among many firms. However, little previous work has examined how these organizational choices influence project knowledge and learning. Based on a comparison of three new product development projects in the software industry, this paper examines how task partitioning in the project influences learning and knowledge development within the firm. The paper suggests that internal development projects encourage synthetic learning and development of architectural and tacit knowledge; in contrast, outsourcing and joint ventures encourage analytic learning and development of component and explicit knowledge.     

《海洋自由论》及其国际法思想

本文介绍了格老秀斯《海洋自由论》的主要内容及其蕴涵的国际法思想。格老秀斯以自然法理论为基础 ,从葡萄牙对东印度无主权、无权垄断海洋和海上航行权以及无权垄断国际贸易权等三个角度来阐释其海洋自由和贸易自由理论 ;其蕴涵的国际法思想主要有 :航行自由和捕鱼自由、贸易自由、无害通过权、人类共同财产及和平论与和平解决国际争端等。这些闪耀着国际法思想光芒的真知灼见对今天的国际海洋法制度有着深刻的影响。在强权政治仍然主宰世界的今天 ,重温格老秀斯的国际法思想 ,仍有着积极意义。     

Compliance Versus Risk in Assessing Occupational Exposures

Assessments of occupational exposures to chemicals are generally based upon the practice of compliance testing in which the probability of compliance is related to the exceedance [γ, the likelihood that any measurement would exceed an occupational exposure limit (OEL)] and the number of measurements obtained. On the other hand, workers’ chronic health risks generally depend upon cumulative lifetime exposures which are not directly related to the probability of compliance. In this paper we define the probability of “overexposure” (θ) as the likelihood that individual risk (a function of cumulative exposure) exceeds the risk inherent in the OEL (a function of the OEL and duration of exposure). We regard θ as a relevant measure of individual risk for chemicals, such as carcinogens, which produce chronic effects after long-term exposures but not necessarily for acutely-toxic substances which can produce effects relatively quickly. We apply a random-effects model to data from 179 groups of workers, exposed to a variety of chemical agents, and obtain parameter estimates for the group mean exposure and the within- and between-worker components of variance. These estimates are then combined with OELs to generate estimates of γ and θ. We show that compliance testing can significantly underestimate the health risk when sample sizes are small. That is, there can be large probabilities of compliance with typical sample sizes, despite the fact that large proportions of the working population have individual risks greater than the risk inherent in the OEL. We demonstrate further that, because the relationship between θ and γ depends upon the within- and between-worker components of variance, it cannot be assumed a priori that exceedance is a conservative surrogate for overexposure. Thus, we conclude that assessment practices which focus upon either compliance or exceedance are problematic and recommend that employers evaluate exposures relative to the probabilities of overexposure.