电子工业用高纯氮的生产

生产电子工业用高纯氮的制氮装置 ,其要点和难点是一氧化碳和氢的清除。采用一氧化碳转换炉和特殊的冷箱内流程组织 ,可以生产纯度为 99 9999%以上的高纯氮。对制取电子工业用高纯氮制氮装置与常规制氮装置加氮终端净化器两种流程进行了比较。     

使用MATLAB绘制原子轨道和电子云图形

绘制原子轨道和电子云图形是量子化学、结构化学研究和教学的重要内容。以氢原子为例，以MATLAB为程序开发语言，设计了一种精确、快速、简便地绘制原子轨道和电子云图形的应用程序。介绍了该程序设计的过程，给出了源程序和运行结果示例，并讨论了MATLAB的三维球坐标图形、四维图形的绘制技术。研究结果表明MATLAB是解决结构化学数值计算和数据可视化问题的一种非常有效的工具。     

用ColdFusion技术实现网上购物

本文介绍了用ColdFusion技术实现网上购物的系统结构,分析了系统各个模块的功能,对其中的关键技术进行了讨论,并给出了具体实例。     

聚合物分解法制备微波介质陶瓷粉体的研究

对采用聚合物分解（Ｐｅｃｈｉｎｉ）法制备ＭｇＴｉＯ＿３粉体进行了研究。通过对聚合中间产物进行红外光谱分析，研究了聚合物分解法制备ＭｇＴｉＯ＿３陶瓷粉体的聚合反应过程及产物。并与用传统固相反应法制备粉体工艺进行对比．从而证明用聚合物分解法可获得单一ＭｇＴｉＯ＿３相材料．并可降低粉体的煅烧温度。     

新型引线热浸镀锡合金的研究

分析比较了进口锡与国产锡的成分和性能。设计出了新型的引线热浸镀锡合金，它具有较低的工作温度、优良的抗氧化性、流动性和可焊性。     

电子商务环境下企业资源计划(ERP)的新进展

分析了在电子商务环境下企业资源计划 (ERP)需求的新特点 ,并结合ERP发展和实际应用中存在的问题 ,论述了ERP与电子商务集成化的发展方向 ,提出了企业关系管理 (ERM )的基本框架和建立商业网络 (BN)的必要性。同时 ,还论述了ERP系统在网络化、模块化和智能化的发展方向和最新进展。     

How to protect exchanged secrets in the fair exchange protocol with off-line TTP

The most efficient approach to a fair exchange is to use an off-line trusted third party (TTP for short) who gets involved only when a dispute between two parties occurs. However, exchanged secrets that are not protected properly may be exposed to the TTP when one of these two parties asks the TTP to mediate the dispute. The first work to protect exchanged secrets from TTP’s misuse was proposed by Franklin and Reiter in 1997. They provided an on-line semi-trusted third party instead of an off-line third party for a fair exchange. Their schemes forced the TTP to take part in the protocol for all the cases, and thus, deemed to be impractical.The present paper, introduces several models, including single and multiple TTPs, to focus the attention not only on security properties, but also on reliability functions. In the single TTP mode, our new scheme can protect the exchanged data through an efficient exchange protocol, whereas in the multiple TTP mode, we proposed an approach to balance the security level with the reliability of the system.     

Sales and Use Taxation in E-Commerce: Where We Are and What Needs to be Done

As sales through the Internet have increased, states have sought to force remote sellers to collect and remit sales/use taxes. In response to the U.S. Supreme Court's Constitutional obstacles, the Streamlined Sales Tax Project (SSTP) was organized in 2000. SSTP is a voluntary effort by a number of states to address the Constitutional problems and reduce the burden of sales tax administration for all sellers in all types of commerce. This article examines the current state of the law and the major problems surrounding the SSTP.     

上海石化新版企业网站的实现与未来展望

中国石化上海石油化工股份有限公司的企业网站(www．spc．com．cn)在原有网站结构、功能和硬件的基础上对网站的网页设计、内容、结构、功能进行了全面改版,提高了网站的管理水平和国际认可度。针对中国上市公司通过因特网公布信息,宣传公司形象及产品的信息化要求和战略,简要介绍了上海石化新版企业网站的建设过程,着重分析了网站建设规划、设计和内容管理等企业网站建设和维护的关键,并且展望了公司网站未来发展的技术应用方向。     

How to make and defend a proposal in a deliberation dialogue

In this paper it is shown how tools developed in argumentation theory and artificial intelligence can be applied to the development of a new dialectical analysis of the speech act of making a proposal in a deliberation dialogue. These tools are developed, modified and used to formulate dialogue pre-conditions, defining conditions and post-conditions for the speech act of making a proposal in a deliberation dialogue. The defining conditions set out what is required for a move in a dialogue to count as the making of a proposal by one of the parties. What is required are the conditions that (1) the move fit the requirements of the argumentation scheme for practical reasoning, and (2) the premises are propositions describing common goals of both parties or propositions that they reasonably consider means to achieve these goals. The analysis goes beyond the standard speech act approach by specifying not only the normative requirements for making a well-formed proposal, but also the requirements for responding to it by questioning or criticizing it, and the requirements for defending it.