加强民间组织能力建设的有效途径

伴随着中国社会改革进程,民间组织发展迅速,并在经济建设和社会进步中发挥着越来越广泛的积极作用。但民间组织的整体素质和自律水平有待进一步提高,如何加强民间组织的能力建设,作者提出了中国民间组织能力建设的五方面的有效途径,供社会各界关心民间组织发展的人士共同探讨。     

B/S三层体系结构模式

随着WEB技术的迅速发展和应用,如何利用WEB技术,建立集主机-终端方式和C/S方式优点为一体的新的应用模式是计算模式研究的一个新课题.论及了Internet/Intranet环境下,B/S三层体系结构模式的构成、工作原理,从多方面对比分析了B/S与C/S模式的优劣,认为B/S模式是当今应用软件的首选体系结构.     

并行口在EPP模式下的应用

给出了并行口的EPP协议，以及在EPP模式下进行数据采集、A／D转换与并行口扩充的实用实例。     

Accurate forecasting of the undecided population in a public opinion poll

The problem of pollsters is addressed which is to forecast accurately the final answers of the undecided respondents to the primary question in a public opinion poll. The task is viewed as a pattern‐recognition problem of correlating the answers of the respondents to the peripheral questions in the survey with their primary answers. The underlying pattern is determined with a supervised artificial neural network that is trained using the peripheral answers of the decided respondents whose primary answers are also known. With peripheral answers as inputs, the trained network outputs the most probable primary response of an undecided respondent. For a poll conducted to determine the approval rating of the (former) Philippine president, J. E. Estrada in December 1999 and March 2000, the trained network predicted with a 95% success rate the direct responses of a test population that consists of 24.57% of the decided population who were excluded in the network training set. For the undecided population (22.67% of December respondents; 23.67% of March respondents), the network predicted a final response distribution that is consistent with the approval/disapproval ratio of the decided population. Copyright © 2002 John Wiley & Sons, Ltd.     

基于代理的校园网计费管理系统

根据目前Cernet校园网典型结构,设计了一种适应性广、通用性强的校园网计费管理系统,探讨了使用代理服务器进行计费的主要功能和工作流程.     

钢筋混凝土框架抗震模型分析

介绍了分离式、组合式、整体式3种钢筋混凝土有限元模型，通过对整体式模型的详细分析，推导出适舍该模型的线性单元矩阵，并得出一些工程中有用的结论。     

UPS网络控制和电压波形显示的研究

对目前在UPS方面研究的焦点问题作了阐述 ,并重点介绍了UPS网络控制系统的实现方法、系统功能和技术特点     

基于特征造型的注塑件CAD/CAE研究

以某电器零件的特征造型与注塑分析模拟为例，介绍了Pro/Engineer的特点以及在注塑件产品开发中的应用。     

THE TRANSFER BEHAVIOUR OF SOME CATIONS AT WATER／NITROBENZENE INTERFACE BY SEMIDIFFERENTIAL CYCLIC VOLTAMMETRY

The transfer of Sr~(2+) and Ba~(2+) ion, facilitated by 18-Crown-6 present in the aqueous phase, and of succinylcholine ion at w/nb interface were investigated by semi-differential cyclic voltammetry. A good polarographic curve of succinylcholine ion dissolved in water was obtained in the system of 0.01 mol/l LiCl (w)——0.01 mol/l TBATPB (nb). The peak current is directly proportional to the concentration of SC~(2+) ion. It can be used for the determination of SC and the detection limit is 1.05×10~(-5) mol/l.The apparent D~w and D~(nb) have been estimated. The transfer of Sr~(2+) and of Ba~(2+) at the interface are facilitated by 18-Crown-6 present in the aqueous phase and the peak current is directly proportional to the concentration of 18-Crown-6 in water. This method can be used for the determination of the complexing agent and for the stability constant of the complex formed in the aqueous phase.All the experimental results are in keeping with the theoretical.     

济源凹陷油源追踪及烃类垂直运移作用

济源凹陷为一中、新生代复合型断陷．下第三系原油为轻质、低硫原油，与下伏中生界（Ｔｔ－Ｊ２）湖沼相生油岩抽提物具有同源性，而与下第三系泥岩抽提物回然相异。后邓断裂是烃类垂直运移的良好通道，中生界生成的烃类沿断裂经过了约３０００－４０００ｍ的垂直运移而聚集成芷。长距离的垂直运移造成了原油中ｒ－蜡烷的富集，作为运移通道的断裂发育时间、规模等控制了浅层油芷的分布．