多出口下的校园网NAT应用探析

为了在经济的基础上提高校园网的出口带宽和安全性,在策略路由的基础上运用NAT技术实现了双出口接入互联网。首先介绍了我校校园网的基本情况,说明了双出口接入互联网的必要性,然后提出了所面临的问题以及解决问题的思路,最后详细叙述了用iptables实现NAT功能的全过程。     

澳大利亚多元文化政策的形成与影响评析

70年代初，澳大利亚政府开始采取多元文化政策来处理民族文化多样性问题，到80年代末将其确立为基本国策。多元文化政策的实施有利于澳大利亚经济的发展，社会稳定和国际交往。     

一种新的视频代理方案──分块代理

提出了一种适合于视频数据的代理策略分块代理,这种策略将视频节目按一定分块函数进行分块,并根据节目流行程度和块大小在代理服务器上进行分块代理·仿真结果表明,与传统的代理策略相比,它可以很好的提高数据的字节点击率,降低等待用户的比例·     

各机器上具有相同加工时间F1oW Shop 调度问题

由m台机器构成的Flow Shop，当工件在各机器上加工时间相同时，直觉上，等价于单机问题。本文推测单机情形最优解的性质及其确定策略也应适合此调度模型。本文就一些目标函数验证了这一推测。     

Oil shocks: How can OECD countries manage them best?

As the 1990-91 Gulf crisis has emphasized, the risk of new oil shocks remains high in the medium to long run. Although energy intensity has decreased in the major countries since the first two oil shocks, the simulation performed with the MIMOSA world model, which is described in this paper, shows that a permanent rise in oil prices still induces direct strong negative consequences in the OECD: a temporary recession, a durable loss in production and employment and a lasting rise in inflation. Moreover, according to the model and due to national dissimilarities, an oil shock in Europe has some asymmetrical effects which are pointed out here. Further simulations test two different economic policy responses in the OECD: a ‘beggar-thy-neighbor’ policy in which each country tries to ‘export’ its unemployment by curbing domestic inflation and wage growth; and a co-ordinated policy supporting both supply and demand. The first leads to a general deflationist overshooting. The second ensures stabilization with a much lower cost in employment.     

多级安全RDBMS的安全策略

讨论了计算机系统的安全策略和多级安全的概念．提出了多级安全ＲＤＢＭＳ的一种安全策略，对策略中的自主安全、多级安全和最小特权原则进行了详细的叙述．     

马尔可夫过程在物价渡动研究中的应用——策略迭代在考虑钱币损失的经济系统中的实现

本文利用马尔可夫过程理论研究了某货物价格变动的有关規律。这是系列研究的第三部份。     

科技政策规律论

科技政策作为国家或地区对科技活动组织、干预、调控而制定和形成的施政方针、制度措施等规则体系，有其自身的规律。科技政策规律主要包括顺从主流律、生命周期律、效力周期律、利益调控律和辩证发展律五个方面。     

关于行政处分的几点思考

行政处分作为管理机构对其内部成员违反法律法规或者纪律规定追究责任的一种内部具体行政行为，无论在国家机关还是企事业单位的管理工作中均普遍存在。作为一种制裁手段和惩戒措施，如果适用不当，必然会对被处分人的权益造成一定的损害，并产生负影响。现实管理工作中，管理机构性质不同，对内部成员的行政处分的依据则有所不同，处分责任类型也有差异，容易引起管理者在行政处分与政纪处分以及行政处罚之间的认识混淆。     

The role of macroeconometric models in forecasting and policy analysis in the united states

This article stresses how little is known about the quality, particularly the relative quality, of macroeconometric models. Most economists make a strict distinction between the quality of a model per se and the accuracy of solutions based on that model. While this distinction is valid, it leaves unanswered how to compare the‘validity’of conditional models. The standard test, the accuracy of ex post simulations, is not definitive when models with differing degrees of exogeneity are compared. In addition, it is extremely difficult to estimate the relative quantitative importance of conceptual problems of models, such as parameter instability across‘policy regimes’ In light of the difficulty in comparisons of conditional macroeconometric models, many model-builders and users assume that the best models are those that have been used to make the most accurate forecasts are those made with the best models. Forecasting experience indicates that forecasters using macroeconometric models have produced more accurate macroeconomic forecasts than either naive or sophisticated unconditional statistical models. It also suggests that judgementally adjusted forecasts have been more accurate than model-based forecasts generated mechanically. The influence of econometrically-based forecasts is now so pervasive that it is difficult to find examples of‘purely judgemental’forecasts.