强化教育工会维护职能之我见

随着学校的改革不断深化,办学规模扩大,院(系)管理职能增加,学校管理重心下移,各种关系将会发生变化与调整,各种新的矛盾不断出现.新形势给工会工作提出了更高的要求.作为工会组织应以江泽民总书记"三个代表"重要思想为指导,既要动员和组织教职工旗帜鲜明地支持改革、参与改革,努力把各项改革措施变为教职工的自觉行动,又要进一步突出维护职能,切实保障教职工的合法权益,努力实施送温暖工程,多为教职工办好事、实事,保证改革的健康发展,保证教职工队伍和学校的稳定.     

高分辨率彩管封口机电子枪激光自动对准系统

提出了一种激光自动对准系统,可用于彩管封口机中电子枪相对于屏面的定位。该系统由激光器、激光准直部分、传感器、单片机控制系统、驱动电路及专用减速器组成,在单片机控制系统的控制下,自动完成电子枪的定位任务。模拟实验证明该定位方法完全能在要求的定位精度内实现电子枪的自动定位。     

论大学图书馆在素质教育中的作用

大学图书馆应在素质教育中发挥重要的作用 ,其具体途径有三 :一是试办自动借阅藏书室 ;二是增进与学生的沟通渠道 ;三是提高从业人员自身素质     

西部开发与人力资本

基于人口因素对社会、环境和经济的制约作用,本文针对西部开发这一伟大的战略转移,阐述了人力资本在西部开发中的作用,分析了人力资本在西部地区的不足,并认为,通过自身潜力的挖掘才是解决西部地区人力资本的出路.     

数字式同步发电机微机励磁调节装置

介绍了同步发电机数字微机励磁装置。该装置综合运用了同步发电机的暂态运行理论、稳态运行理论以及自动控制理论,采用了目前国际上较流行的数字控制技术及电力电子技术。其主控单元通过对同步发电机的运行参数、运行曲线及特性曲线进行优化处理,达到对同步电机运行的自动控制。     

试论土地增值税的保留与完善

针对取消或停征土地增值税的说法,着重分析应当保留土地增值税的几个理由,并特别强调土地增值税在抑制投机、防止虚热方面所特有的"自动稳定器"的功能。结合国有土地实行年租制改革的可能以及日趋成熟的改革房地产税的研究,提出对土地增值税适当作些调整,使之长期发挥作用的建议。     

不同荷载比下嵌固式钢框架节点M θr曲线拟合

对嵌固式节点进行有限元仿真分析，得到了嵌固式门式框架在不同的荷载工况条件下节点的M θr曲线。通过对不同荷载组合情况下得到的M θr曲线进行比较可知，节点刚度随着荷载组合的变化而变化，但两个方向框架中嵌固式节点刚度的变化规律不同。综合考虑门式框架嵌固式节点M θr曲线的特性，对多种荷载组合情况下的M θr曲线进行曲线拟合，得到拟合公式并对其进行方差分析。透过相关指数可知提出的嵌固式节点M θr曲线的拟合公式是可靠的，可为进一步深入研究嵌固式组装钢框架的力学性能提供借鉴和参考     

Partial logistic relevance vector machines in survival analysis

The use of relevance vector machines to flexibly model hazard rate functions is explored. This technique is adapted to survival analysis problems through the partial logistic approach. The method exploits the Bayesian automatic relevance determination procedure to obtain sparse solutions and it incorporates the flexibility of kernel-based models. Example results are presented on literature data from a head-and-neck cancer survival study using Gaussian and spline kernels. Sensitivity analysis is conducted to assess the influence of hyperprior distribution parameters. The proposed method is then contrasted with other flexible hazard regression methods, in particular the HARE model proposed by Kooperberg et al. [16]. A simulation study is conducted to carry out the comparison. The model developed in this paper exhibited good performance in the prediction of hazard rate. The application of this sparse Bayesian technique to a real cancer data set demonstrated that the proposed method can potentially reveal characteristics of the hazards, associated with the dynamics of the studied diseases, which may be missed by existing modeling approaches based on different perspectives on the bias vs. variance balance.     

二语特征重组假说之构架与远景评释

特征重组假说是目前二语习得研究应用原则与参数框架实现既定理论目标的有效尝试，在学界引发了不少争议。该假说将二语习得设想为习得者通过对比分析母语与二语特征之间的对应之处，拆分(delink)母语特征并将其按二语要求重装(reassemble)于二语词项之上，必要时辅以普遍语法特征库的完全通达以补全母语中缺失的特征，完成后续句法习得。但是，不支持宏观语法参数与Borer-Chomsky微观词汇参数，以及特征识别时不区分可解读、不可解读特征等观点引起学界质疑其可行性。     

Optimal Procurement Design of an Assembly Supply Chain with Information Asymmetry

We study a decentralized assembly supply chain in which an assembler (she) assembles a set of n components, each produced by a different supplier (he), into a final product to satisfy an uncertain market demand. Each supplier holds private cost information to himself, for which the assembler only has a subjective estimate. Furthermore, the assembler believes that the suppliers' costs follow a joint discrete probability distribution. The assembler aims to design an optimal menu of contracts to maximize her own expected profit. The assembler's problem is a complex multi‐dimensional constrained optimization problem. We prove that there exists a unique optimal menu of contracts for the assembler, and we further develop an efficient algorithm with a complexity of O(n) to compute the optimal contract. In addition, we conduct a comprehensive sensitivity analysis to analyze how environmental parameters affect individual firm's performance and the value of information to the assembler, to each supplier, and to the supply chain. Our results suggest that each supplier's private cost information becomes more valuable to the assembler and each supplier when the average market demand increases or when the final product unit revenue increases. Surprisingly, when a supplier's cost volatility increases and its mean remains the same, the value of information to the assembler or to each supplier does not necessarily increase. Furthermore, we show that when the suppliers' cost distributions become more positively correlated, the suppliers are always worse off, but the assembler is better off. However, the value of information for the assembler might increase or decrease.