浅谈电子政务信息安全技术保障体系建设

电子政务作为信息网络的一个特殊应用领域，运行着大量需要保护的数据和信息，相对于企业信息化和电子商务，有自身特殊性：一是信息内容的高保密性、高敏感度；二是电子政务发挥行政监督力度；三是利用网络环境为社会提供公共服务。如果系统的安全性被破坏，造成敏感信息暴露或丢失，或网络被攻击等安全事件，产生的后果必然波及地区和整个国家，电子政务信息系统也必然成为信息间谍、敌对势力、恐怖集团、国家之间信息战攻击的目标。     

Studies of Several Systems with Air Electrode Electro-Synthesizing H2O2 on the Spot for Degrading Aniline in Aqueous

A gas diffusion electrode (air electrode) with a high current efficiency of electro-synthesizing H2O2 using O2 in air was prepared. The several systems with air electrode as cathode of electro-synthesizing H2O2 on the reaction spot for degrading aniline in aqueous--electro-Fenton system, photo-excitation electro-H2O2 system and photo-electro-Fenton system, were developed. The rates of decomposition of H2O2 and mineralization of aniline were experimentally measured respectively under different conditions, and the results indicated there has an excellent parallel relation between decomposition rate of H2O2 and mineralization rate of aniline. Especially, photo-electro-Fenton system, where H2O2 is decomposed the fastest, is the best system of oxidizing and degrading organic toxicants. Compared photo-electro-Fenton system with photo-Fenton system, important role is revealed in the interface of air electrode. In this paper, the mineralization mechanism of aniline in the photo-electro-Fenton system was also discussed.     

R（A）＋N（A）是直和的条件

本文给出了几种判别矩阵的值域与其核的和是直和的方法。     

凝胶萃取过程中的溶质分配和凝胶滞胀

在Flory理论的基础上,用凝胶网络弹性自由能的标度关系推导分析了滞胀度和分配系数的表达式及其影响因素。结果表明很多情况下不能用凝胶在纯溶剂中的平衡溶胀度来估计凝胶萃取的浓缩能力。理论上还预示进入凝胶网络中的溶质量随凝胶致密程度的增加和溶质分子尺寸的增加而减小,这表明凝胶网络对大分子溶质的排斥是一种热力学效应。     

企业组织管理并行工程

从管理科学角度，论述了并行工程的基本原理，分析了传统组织管理模式在市场竞争中的不利因素，提出了一个面向并行工程的组织管理模式框架，并就其结构，机制，方法以及支撑环境进行了探讨。     

山珍糊的研制

90年代是我国人民生活从温饱向小康水平过渡的关键时期,把握这一历史机遇,从国情出发及时抓好食物营养结构的调整和优化,以提高中华民族的身体素质意义重大。 我国的国情和国力决定了城乡居民的食物营养结构必须以粮食和粮食制品为主,肉、禽、     

Nonsynchronous Trading Model and Return Analysis

Nonsynchronous trading is one of the hot issues in financial high-frequency data processing. This paper extends the nonsynchronous trading model studied in [1] and [2] for the financial security, and considers the moment functions of the observable return series for the extended model. At last. the estimators of parameters are obtained.