公共新闻事业与公共领域的建构和发展

公共新闻(Pub lic Journalism)是1990年前后在美国兴起的新闻改革运动。它的兴起并非是单独的现象,而是欧美在政治经济困局下复兴的公民社会热潮中的一个环节。哈贝马斯的公共领域理论是公共新闻的理论来源之一,公共新闻事业对于社会公共领域的建构和发展有着重要的意义。     

公共关系案例教学法探讨

公共关系案例教学是一种理论与实践相结合的先进教学方法,具有传统教学法不可比拟的优势,能激发学生学习公共关系理论的主动性、积极性,培养创造性思维,锻炼公共关系的实务技能。要运用好案例教学法,必须注意把握案例教学的基本环节,处理好案例教学与传统教学之间的关系,提高教师和学生的素质。     

信息商品定制营销探讨

由于信息用户需求趋向个性化、信息市场细分的极限化,信息商品营销的方式向定制营销型转变并发挥越来越重要的作用.文章分析了信息商品定制营销的概念、特点和策略,并就如何实现信息商品的定制营销提出了可行的方法.     

椭圆曲线密码体制的研究现状

本文对椭圆曲线密码体制的研究现状进行了概述.首先简述了椭圆曲线密码体制的历史进展和数学基础,而后介绍了椭圆曲线支持的密码体制及其实际应用和相关标准,还分析了椭圆曲线密码体制的攻击现状,最后指出了这种密码体制的研究方向.     

公务员招聘的优化模型

讨论了用人单位在公务员招聘时如何选择自己满意的应聘人员.首先根据专家组对应聘人员综合素质的等级评分,利用偏大型正态分布函数ui(xk)＝1-e(-(xk/λ))2(λ＞0,k＝0,1,2,...,l)来分析专家组对应聘人员的满意度,进而得到应聘人员对用人单位的吸引力,从而建立了一个简单且实用的0-1规划模型.     

A New Threshold Signature Scheme Using Self-Certified Public Keys

To prevent active attack, we propose a new threshold signature scheme using self-certified public keys, which makes use of hash function and discrete logarithm problem. The scheme has less commutnication and computation cost than previous schemes. Furthermore, the signature process of the proposed scheme is non-interactive.     

Efficient Authenticated Key Agreement Protocol Using Self-Certified Public Keys from Pairings

An efficient authenticated key agreement protocol is proposed, which makes use of bilinear pairings and selfcertified public keys. Its security is based on the security assumptions of the bilinear Diffie-Hellman problem and the computational Diffic-Hellman problem. Users can choose their private keys independently. The public keys and identities of users can bc verified implicitly when the session key being generating in a logically single step. A trusted Key Generation Center is no longer required as in the ID-based authenticated key agreement protocols. Compared with existing authenticated key agreement protocols from pairings, the new proposed protocol is more efficient and secure.     

A Role-Based PMI Security Model for E-Government

We introduce the general AC( attribute certificate ), the role specification AC and the role assignment AC. We discuss the rolc-based PMI(Privilege Management Infrastructure) architecture. The role-based PMI(Public-Key Infrastructure) secure model for E-government is researched by combining the role-based PMI with PKI architecture (Public Key Infrastructure). The model has advantages of flexibility, convenience, less storage space and less network consumption etc. We are going to use tbe secure model in the E-government system.     

Incentive Mechanism Design for Public Goods Provision： Price Cap Regulation and Optimal Regulation

This paper studies the mechanism design that induces firms to provide public goods under two regulatory means： price cap regulation and optimal regulation, respectively. We first outline two models of monopoly regulation with unobservable marginal costs and effort, which can be regard as an optimal problem with dual restrictions. By solving this problem, we get the two optimal regulatory mechanisms to induce the provision of public goods. Further, by comparative statics, the conclusion is drawn that the welfare loss as sociated with price cap regulation, with respective to optimal regulation, increases more with increase of the expense of public goods.     

拾得赃物拒不返还应如何定性

根据罪刑法定原则，可将拾得赃物拒不返还的行为排除在犯罪之外。通过分析赃物与拾得物的关系，比较拾得物制度与不当得利的法律适用，可知拾得赃物拒不返还行为属不当得利，应按债权关系处理较为妥当。