6kV～35kV电网防雷问题解决方法

文章探讨了当前6kV～35kV电网的防雷现状及存在问题,并提出相应的解决措施。     

Bank ownership,privatization, and performance: Evidence from a transition country

This paper combines the static effect of ownership and the dynamic effect of privatization on bank performance in China over 1995–2010, reporting a significantly higher performance by private intermediaries – joint stock commercial banks and city commercial banks – relative to state-owned commercial banks. However, publicly traded banks, subject to multiple monitoring and vetting in capital markets, perform better regardless of ownership status. The privatization of banks has improved performance with respect to revenue inflow and efficiency gains in the short- or long-run (initial public offerings). The positive long-run effect is more relevant and significant for banking institutions with minority foreign ownership. Moreover, this paper innovatively estimates interest income efficiency and non-interest income efficiency at the same time. The results suggest that Chinese banks are much more efficient in generating interest income than raising non-interest revenue, although the latter aspect has improved significantly during the sample period.     

Critical resource: An institutional economics of the Internet addressing-routing space

This paper links the analysis of IP address policy to the established vocabulary and concepts of institutional economics. Internet addressing and routing are usually discussed in technical terms, yet embedded in this highly technical discourse are a number of critical economic concepts, such as scarcity, externalities, common pool resources, tragedy of the commons, and conflict over the distribution of costs. To solve these problems, governance institutions native to the Internet have evolved. Yet despite the centrality of addressing and routing to Internet governance, there is very little research literature that bridges economic, institutional and technical discussions of IP addressing and routing. This paper connects the techno-economic discussion to analysis of institutions and governance arrangements.     

Capital incentives and adequacy for securitizations

This paper analyzes the capital incentives and adequacy of financial institutions for asset portfolio securitizations. The empirical analysis is based on US securitization rating and impairment data. The paper finds that regulatory capital rules for securitizations may be insufficient to cover implied losses during economic downturns such as the Global Financial Crisis. In addition, the rating process of securitizations provides capital arbitrage incentives for financial institutions and may further reduce regulatory capital requirements. These policy-relevant findings assume that the ratings assigned by rating agencies are correct and can be used to build a test for the ability of Basel capital regulations to cover downturn losses.     

浅谈IPv6技术的发展前景及影响

IPv6作为新一代互联网的核心协议,必将取代IPv4。本文通过对IPv6特点和发展现状的简要描述,论述IPv6现状及前景,IPv6终将代替IPv4,以适应时代发展的需要。所以IPv6技术越来越受到人们的关注与讨论。     

Scaling models for the severity and frequency of external operational loss data

According to Basel II criteria, the use of external data is indispensable to the implementation of an advanced method for calculating operational risk capital. This article investigates how the severity and frequencies of external losses are scaled for integration with internal data. We set up an initial model designed to explain the loss severity by taking into account potential selection bias in the external data. Estimation results show that many variables have significant power in explaining the loss amount. We use them to develop a normalization formula. We develop a zero-inflated count-data model to scale the loss frequency. We compute an operational VaR and we conduct out-of-sample backtesting.     

Ordering the extraction of renewable resources: The case of multiple aquifers

Optimal sequencing of resource extraction is typically studied for nonrenewable resources. We provide conditions for optimal use of multiple sources of a renewable resource and characterize the resulting extraction sequence, resource scarcity values, and (single) efficiency price path for two groundwater aquifers and an abundant alternative resource. Even with one demand, the optimal sequence depends on the differential opportunity costs of the two renewables. A numerical simulation for the South O‘ahu aquifer system, which also allows for different distribution costs, illustrates the case of using the “leakier” aquifer first and then switching to simultaneous use of both resources. The welfare gain from specialization relative to independent management is $4.7 billion.     

6S管理在某胶粉制造厂的应用

企业生产现场的环境对产品质量、员工心情、生产效率、生产成本等都有着重要的影响,而6S管理是现代企业行之有效的现场管理方法。本文通过对某胶粉制造厂生产现状分析,得出实施6S是该企业的需要。并针对该企业的特点,设计了6S管理实施方案,通过该方案的实施,企业的生产现场得到了改善。     

基于用户分类的可聚类性IPv6地址分配

本文通过研究驻地网分配的IPv6可聚合全球单播地址,对其16位SLA ID和64位接口ID进行合理划分,提出一种基于用户分类的可聚类性IPv6地址分配方案.该方案较好的满足了IPv6路由要求,同时为IPv6网络的用户管理提供了便捷.     

欧盟促进可再生能源使用指令2009／28／EC概述

文章介绍了欧盟可再生能源政策的概况，以及促进可再生能源使用指令2009／28／EC。指令规定到2020年，整个欧盟的能源消耗中至少有20％来自可再生能源，且每个成员国运输领域的能源消耗中至少有10％来自生物燃料。