分布式防火墙在大中型企业计算机网络中的应用

对大中型企业网络面临的主要安全问题进行分析研究,指出传统防火墙存在对内网的防御能力不足,容易成为网络瓶颈等不足。分析了分布式防火墙的产生背景、特点及工作原理,结合企业的应用对分布式防火墙的产品选择、部署要点提出建议,为大中型企业采用分布式防火墙提供了一些参考。     

浅析网络安全防范技术

网络防火墙技术的作为内部网络与外部网络之间的第一道安全屏障,是最先受到人们重视的网络安全技术,就其产品的主流趋势而言,大多数代理服务器（也称应用网关）也集成了包滤技术,这两种技术的混合应用显然比单独使用更具有大的优势。那么我们究竟应该在哪些地方部署防火墙呢？首先,应该安装防火墙的位置是公司内部网络与外部Intemet的接口处,以阻挡来自外部网络的入侵。安装防火墙的基本原则是：只要有恶意侵入的可能,无论是内部网络还是与外部公网的连接处,都应该安装防火墙。     

企业内部网络的安全管理与防范措施

本文阐述了内部网络的安全隐患,从防火墙与入侵检测联动、三层交换机的VLAN设置、网络版杀毒软件、漏洞补丁及建立WSUS服务器、防灾备份等方面建立安全防范措施和安全管理.     

浅谈网络安全技术

网络防火墙技术作为内部网络与外部网络之间的第一道安全屏障，是最先受到人们重视的网络安全技术，就其产品的主流趋势而言，大多数代理服务器(也称应用网关)也集成了包滤技术，这两种技术的混合应用显然比单独使用更具有大的优势。那么我们究竟应该在哪些地方部署防火墙呢?首先，应该安装防火墙的位置是公司内部网络与外部Internet的接口处，以阻挡来自外部网络的入侵；其次，如果公司内部网络规模较大．并且设置有虚拟局域网(VLAN)，则应该在各个VLAN之间设置防火墙；第三，通过公网连接的总部与各分支机构之间也应该设置防火墙，如果有条件，还应该同时将总部与各分支机构组成虚拟专用网(VPN)。     

防火墙功能指标详解

从防火墙产品和技术发展来看。分为三种类型：基于路由器的包过滤防火墙、基于通用操作系统的防火墙、基于专用安全操作系统的防火墙。     

电子办公系统的信息安全保障技术

本文主要阐述了企业电子办公系统的安全需求,安全保障防火墙技术,内网与外网隔离技术,密码技术,公共密码钥基础设施,入侵检测等技术问题。     

信息安全技术及其应用

文章阐述了网络信息安全的关键技术 ,包括防火墙技术、加密型网络安全技术、漏洞扫描技术和侵入检测技术等 ,并在此基础上给出了应用这些技术来保障现代网络信息安全的应用实例。     

计算机网络安全中的防火墙技术分析

随着网络技术的迅猛发展,安全性已成为网络互联技术中的关键问题.本文介绍了防火墙的定义,较全面论述了防火墙的分类及防火墙在计算机网络安全中的应用价值,简要分析了防火墙在计算机网络安全中的优势.     

基于IPv6的防火墙系统分析

IPv6是下一代的IP协议,它的提出解决了现有协议的一些安全问题,它在防火墙中的应用提高了系统的安全性,本文以常见的三类防火墙为例,对基于IPv6的防火墙系统做一些详细的分析,并与基于IPv4的防火墙系统相比较,指出:基于IPv6的防火墙系统可以实现对IP数据报的认证和保密,它比基于IPv4的防火墙系统具有更高的安全性。     

浅谈新形势下的高校科研工作

从高校科研发展规划与部署、科研管理工作及科研管理人员素质三个层次的若干方面,对新形势下如何搞好高校科研工作进行了阐述。     

基于嗅探技术的内部网络安全研究

内网一般由代理服务器、二层交换机、大量终端等组成,由于网络边界处的防火墙、入侵检测系统可以有效的防御来自于外网的入侵,却忽视了网络内部的安全。针对这样的情况,通过使用OMNI PEEK软件对内网进行实时的流量监控和数据包分析,较好的加强并保障了内网的管理和安全。     

Main banks’ influence on financial reporting quality in Japan

This study investigated main banks’ influence on the quality of accounting firms’ audits and corporate firms’ earnings, focusing on companies on Japan’s Nikkei 500 index. We posed three questions in this research study about main banks’ influence on corporate clients’ earnings management. First, does a weakened main bank relationship influence corporate clients’ financial reporting quality? Second, does Japan’s firewall deregulation influence firms’ earnings quality? Finally, does the relationship between accounting firms and main banks affect client firms’ earnings quality? Our main findings were that main banks are not related to client firms’ earnings management; however, main banks mitigate client firms’ earnings management after firewall deregulation. On the other hand, firewall deregulation does motivate firms to manipulate their earnings management. Finally, using Pong and Kita’s (2006) study as a framework, we found that main banks and client firms using the same accounting firms had no influence on earnings management. Based on these evidences presented, our findings suggest that the quality of corporate clients’ financial reporting changes before and after firewall deregulation.     

Fiber in the backbone! The impact of broadband adoption on firm growth in network markets

This article examined the relationship between the adoption of technology, via the deployment of broadband, on revenue growth, which is an important measure of financial performance, of the deploying firms using panel data for all of the major local exchange carriers in the US telecommunications industry from 1988 to 2001. The sector is an important network market context where the implications of deployment have substantial salience. The results show a positive relationship between broadband deployment and carriers’ revenue growth. This result implies that encouraging the adoption and deployment of broadband technologies in addition to the benefits of the consumers and firms at the receiving end of the new technology create the potential for better financial performance for the deploying firms. These results also imply that steps that can be taken to provide incentives that will hasten the further deployment of broadband will result in gains in financial performance within the sector.     

The impact of infrastructure and service-based competition on the deployment of next generation access networks: Recent evidence from the European member states

This work identifies the most important determinants of next generation access (NGA) network deployment, using data from the EU27 member states for the years 2005–2011. Our results indicate that the more service-based competition is pronounced the more negative is the impact on NGA deployment, while competitive pressure from broadband cable and mobile affects NGA deployment in an inverted U-shaped manner. We further find that there are severe adjustment costs and stickiness towards the desired long-term level of NGA infrastructure. It appears that the approach of the European Commission to force service-based competition via cost-based access regulation will not elicit the huge new investment needed for a comprehensive NGA roll-out.     

军民融合式发展的国际经验与启示

＂十二五＂规划纲要从国家经济社会发展战略的层面,对军民＂深度融合＂发展进行了总体设计和长远筹划。通过军民融合式发展,在有效保障国防安全基础上优化资源配置,扩大国防利益与经济利益的交汇点,以促进国防与经济社会的同步发展,是世界各主要国家的共同发展战略和政策取向。落实＂十二五＂规划纲要部署,应借鉴世界主要国家军民融合发展经验,构建决策科学、运行有效的体制机制,坚持改革创新,用融合的理念解决问题、促进发展。     

License prices for financially constrained firms

It is often alleged that high auction prices inhibit service deployment. We investigate this claim under the extreme case of financially constrained bidders. If demand is just slightly elastic, auctions maximize consumer surplus if consumer surplus is a convex function of quantity (a common assumption), or if consumer surplus is concave and the proportion of expenditure spent on deployment is greater than one over the elasticity of demand. The latter condition appears to be true for most of the large telecom auctions in the US and Europe. Thus, even if high auction prices inhibit service deployment, auctions appear to be optimal from the consumers’ point of view.      

基于遗传算法的孵化器知识配置模型研究

从知识的视角出发,着重探讨企业孵化器的知识配置问题。首先,通过对孵化器知识体系的构建及孵化过程的描述,揭示了企业孵化的实质是知识配置,然后对该问题进行了数学描述,在此基础上,提出了一个基于遗传算法的孵化器知识配置模型,并对其进行了算法设计。     

PRICING REGULATIONS AND NETWORK TECHNOLOGY INVESTMENTS: A RETROSPECTIVE EVALUATION

This article evaluates the impact of the introduction of incentive regulation on technology deployment, as evaluated using two technology deployment metrics, among the population of local exchange carriers in the USA between 1988 and 2001. The regulatory schemes are disaggregated into five categories, permitting examination of heterogeneity among regulatory schemes. The results show that the rate of return method and the other intermediate incentive schemes implemented have had a negative impact on technology deployment. Conversely, the introduction of pure price caps schemes had a positive and significant impact on firms’ technology deployment. These results highlight the importance of appropriate incentive compatible mechanism design in motivating firms to adopt the new and important technologies that have been developed.     

Renewable energy drivers: a panel cointegration approach

The expected gains from RES deployment to the reduction of carbon dioxide emissions (CO₂) and the cut-off of external dependence of electricity sources could be important. However, it is crucial to understand the determinants of RES growth to help policymakers drawing effective energy polices, involving a commitment of both citizens and governments. In this paper, we use novel panel econometric tools (taking into account structural breaks and cross-section dependence) and find evidence of nonstationary issues and cointegration issues between renewable energy production and its drivers (CO₂ emissions, GDP per capita, energy use and dependency). The results thus reveal that non-stationary issues should be attended, otherwise they could be biased. Using suitable estimators (DOLS, FMOLS) with two different data sets and different proxies and taking common factors into account by MG estimates, we find that there is no environmental concerns effect explaining the growth of renewables in European countries. However, national revenues, energy consumption (demand effect) and energy dependency have a positive impact on renewables deployment. Considering these results, economic assistance (subsidies) might be a mean to increase further the renewables deployment in EU countries and education about renewables deployment is needed.     

Application of technology roadmaps for renewable energy sector

Technology Roadmapping (TRM) is a growing technique widely used for strategy planning and aligning technology with overall business objectives. Technology roadmaps are extensively used in many diverse fields at product, technology, industry, company and national levels. An increasing number of articles published on TRM and technology roadmaps indicate that there is a growing attention for TRM among the researchers from academia, industry and government. In this article, an overview of the application of TRM in renewable energy sector has been provided. After survey of the relevant academic literature and industry roadmaps, we tried to group the roadmaps related to the renewable energy technologies into national, industry/sector and organizational level roadmaps. Research findings indicate that goals and objectives of renewable energy roadmaps are different at these three levels. At national level, roadmaps focus on future energy security, energy dependence, energy policy formulation and environment protection. At industry/sector level, roadmaps are used to identify vision, common needs and evaluate barriers, constraints and risks faced by the industry from technical, political and commercial aspects. Organizational roadmap focuses on evaluation and prioritization of R&D projects to achieve the business goals. Similarly different methods, tools and approaches are used to develop roadmaps at different levels. Various other characteristics of these roadmaps are also discussed and analyzed. Research findings also indicate that greater numbers of roadmaps are developed for those renewable energy technologies undergoing rapid growth. Moreover, most of these roadmaps are developed in the regions where more research, development and deployment activities of renewable energy technologies is taking place.