Optimal management of a flammable forest providing timber and carbon sequestration benefits: an Australian case study*

In deciding to keep or fell a forest stand given its age, the risk of loss of timber through wildfire is an important consideration. If trees also have value from sequestration of carbon, another effect of fire is the unplanned loss of stored carbon. Factors affecting the decision to keep or fell trees, and how much to spend on fire protection, are investigated using stochastic dynamic programming, using carbon sequestration in stands of mountain ash in Victoria as a case study. The effect of treating sawlogs as a permanent carbon sink after harvesting is explored.     

SCDO在银行资产证券化中的应用研究

SCDO是近年来随着衍生品市场发展起来的一种新型信贷证券化产品，即复合型信用抵押贷款。它以信用衍生品作为交易工具，通过灵活的产品结构设计完成信用风险的分散、转移和对冲。本文对SCDO的结构和交易机制进行了讨论，并与中国银行资产证券化问题相结合，提出了SCDO在中国的应用前景和可能面临的挑战     

Dynamic competence set expansion＇s managerial decision analysis

Dynamic competence is a competence that enterprises coordinate, constitute and collocate inside and outside competence to adapt for environmental fast change and renovating enterprises＇ competence. Basing on the dynamic competence set of academic knowledge, this paper builds an expansion model of dynamic competence set based on dynamic programming.     

现代服务业集群发展的他组织动力机制分析

本研究在阐述现代服务业集群发展的他组织动力机制概念的基础上,分析现代服务业集群发展的他组织动力机制中的外部竞争环境机制和政府促导行为机制,并对相关机制发挥作用提供对策建议。     

Pollution and informal economy

In this study, we investigate the relationship between the size of the informal economy and the level of environmental pollution/energy use. To this end, we first use different indicators of environmental pollution along with a measure of energy use intensity in a panel dataset consisting of 152 countries over the period 1999–2009 and empirically examine the relationship between pollution and the shadow economy. The estimation results show that there is an inverse-U relationship between the size of the informal economy and environmental pollution, that is, small and large sizes of the informal economy are associated with lower environmental pollution and medium levels of informality are associated with higher levels of environmental pollution. Next, we build a two sector dynamic general equilibrium model to suggest an economic mechanism for this observation. Our model identifies two channels through which informality might affect environmental pollution: The scale effect, whereby a larger (smaller) informal economy size is associated with a lower (higher) level of environmental pollution, and the deregulation effect, whereby a larger (smaller) informal economy is associated with higher (lower) pollution levels. As these two effects work in opposite directions, the changing relative strength of one with respect to the informal sector size creates the inverted-U relationship between pollution indicators and informality.     

高职物流管理专业校企合作模式探讨

校企合作模式是社会的需要。但是高职物流管理专业校企合作模式中仍然存在很多问题,如何采取多种形式、多种机制、多种模式将物流管理的理论教育与实践教育结合,是探究进一步提高校企合作运营效率的关键点之一。     

基于信号模拟的发动机ECU动态检测方法研究

分析了发动机ECU常用的故障检测方法的特点与不足，提出以信号模拟为基础的ECU动态检测方法及检测系统的构成要素，并说明了适用于动态检测的ECU故障检测仪技术开发要点，着重介绍了ECU检测系统模拟信号的实现。     

Investment Under Uncertainty and Dynamic Adjustment in the Finnish Pork Industry

A stochastic dual model of investment under uncertainty is used to investigate structural adjustment in the Finnish hog industry. Value function restrictions are found to be comparable to those in existing dual models assuming deterministic state variables. The model also allows for an asymmetry in investment response during capital expansion and contraction phases. Empirical results show that investments respond negatively to increased uncertainty and that labor adjusts more slowly during contraction phases than during expansions. Results on economies of size, uncertainty effects, and adjustment rigidities have important implications for hog industry response to Finland's entry into the EU.     

基于主机的局域网ARP攻击防御方案

结合高校机房管理实践,分析了常见的ARP欺骗攻击的表现形式、主要危害及运作原理,提出了实际可操作的、比较完善的解决方法.     

The Impulse of Stock Market Volatility and the Market Crash of October 1987

This paper employs the technique of variance decomposition and impulse response functions to examine the dynamic nature of stock market volatility relationships among six major countries during the pre, around, and post October 1987 crash period. During the period around the crash, the US stock market volatility explains much better the variations of the stock market volatility of Australia, Hong Kong, Japan, Singapore and the UK. Our findings clearly indicate that the crash originated in the US and then spread to other major stock markets.