计算机网络安全系统设计

分析了现代计算机网络所面临的威胁和各种安全问题,同时提出了在设计一个有关网络系统时应该考虑的一些安全问题,如网络安全策略与技术、网络的访问控制、网络数据加密技术、信息隐藏技术等安全问题。     

大规模定制环境下 ERP 的发展

ERP─EnterpriseResourcePlanning企业资源计划系统 ,是指建立在信息技术基础上 ,以系统化的管理思想 ,为现代企业决策层及员工提供决策运行手段的管理平台。从竞争环境的角度出发 ,提出了大规模定制已经逐渐成熟并最终取代大规模生产成为新的生产经营模式的观点 ,同时 ,分析了在大规模定制下传统ERP的局限 ,从管理和技术的角度探讨新一代ERP的特点及发展。     

加油站油品损耗的管理问题分析及解决办法

针对加油站在油品进、销、存方面因管理和人为作弊而产生的损耗大问题，提出了解决办法：各环节交接手续要严密完备；发货方实施保量运输，选择信誉好的承运方；在销售、储存方面应加强管理，推行加油站计量员、账务员集中管理，主要账表电子表格化，及时上报主管部门，执行责任追究制并与效益工资挂钩。     

从科学、规范、监管三个方面下手提高CCC认证有效性

本文从科学、规范和监管三个方面出发,对提高认证有效性提出了几点建议.     

The pharmacokinetics of pancuronium bromide in infants, children and adults

Laparoscopic retroperitoneal lymph node dissection is a new surgical procedure used to enhance staging in men with clinical stage I nonseminomatous germ cell tumors of the testis. The procedure has been performed in a limited number of patients at several centers with extensive laparoscopic experience. Laparoscopic retroperitoneal lymphadenectomy is a technically demanding procedure which can be successfully completed in the majority of patients. However, the risk of complications is greater than in patients who undergo standard open retroperitoneal lymph node dissection. The primary advantage of a laparoscopic approach is shortened hospitalization and rapid return to normal activity. The role of laparoscopy in the management of patients with testis malignancy has not been defined. The use of this staging procedure may help minimize the need for surveillance studies following surgery and may be best utilized in men with a lower likelihood of nodal metastases. Ultimately, prospective study in large groups of patients will be necessary to determine the role of laparoscopic retroperitoneal lymph node dissection in patients with testis cancer.     

无线局域网安全问题研究

为了提供相当于有线局域网的数据安全,IEEE802.11定义了有线等价保密(WEP)协议。然而,最近的研究发现WEP存在严重的缺陷。介绍了无线局域网存在的安全隐患,分析了WEP的结构以及WEP协议的缺陷以及可能遭受的攻击,并探讨了改进方案。     

超高分子量聚乙烯的辐照效应

通过密度测定和ＤＳＣ热分析，观测了超高分子量聚乙烯的辐射效应。实验结果表明：在吸收剂量０—１．１３ＭＧｙ范围内，密度随吸收剂量的增加而增大，熔化热和熔点也有所增加，特别是在低剂量范围内增加十分明显。以上结果都说明，超高分子量聚乙烯在辐照过程中，结晶在完善或有新的结晶形成     

玻璃碳电极的激光改性处理

玻璃碳电极（ＧＣＥ）用激光脉冲照射处理后，电化学反应行为发生很大变化。背景电流减小，Ｆｅ３＋／Ｆｅ２＋氧化还原电对的电极反应速率显著提高，抗坏血酸（ＡＡ）在电极上呈现明显的吸附作用。     

A multi-agent decision support system for stock trading

A distributed problem solving system can be characterized as a group of individual cooperating agents running to solve common problems. As dynamic application domains continue to grow in scale and complexity, it becomes more difficult to control the purposeful behavior of agents, especially when unexpected events may occur. This article presents an information and knowledge exchange framework to support distributed problem solving. From the application viewpoint the article concentrates on the stock trading domain; however, many presented solutions can be extended to other dynamic domains. It addresses two important issues: how individual agents should be interconnected so that their resources are efficiently used and their goals accomplished effectively; and how information and knowledge transfer should take place among the agents to allow them to respond successfully to user requests and unexpected external situations. The article introduces an architecture, the MASST system architecture, which supports dynamic information and knowledge exchange among the cooperating agents. The architecture uses a dynamic blackboard as an interagent communication paradigm to facilitate factual data, business rule, and command exchange between cooperating MASST agents. The critical components of the MASST architecture have been implemented and tested in the stock trading domain, and have proven to be a viable solution for distributed problem solving based on cooperating agents