磷化铝"动态潮解"环流熏蒸技术浅析

介绍了磷化铝“动态潮解”环流熏蒸技术的原理及其特点，并通过分析比较不同产气方式环流熏蒸技术的安全性、可操作性和经济性，得出磷化铝“动态潮解”环流熏蒸技术是一种措施安全、技术先进、操作简便、经济实用，对环境污染小的熏蒸杀虫技术。     

当代国际贸易发展的趋势及我国的对策

20世纪90年代以来，经济全球化和高新技术的发展，对传统国际贸易产生了深刻的影响。国际贸易发展在保持其80年代所出现的发展中国家在世界贸易中地位增强，国际贸易在支持世界经济增长以及服务贸易异军突起等特点的基础上，近期又出现了几大新的发展趋势，而研究国际贸易的发展趋势，是我国制定和完善出口发展战略的重要前提。本通过研究当代国际贸易的发展趋势，分析了我国应该如何制定相应的政策来促进我国对外贸易的发展。     

辽河某区块VSP测井应用

VSP是一种地震观测方法,全称为垂直地震剖面,与通常地面观测地震剖面相对应。其地震波是在地表附近被激发,沿着井孔各个深度布置一些多级多分量的检波点来进行观测。本文经过对锦265井进行VSP测井资料采集和相关研究,落实构造形态特征及断层发育情况,求取准确的速度参数,预测落实其油水分布关系及其不同层系储层发育情况,为该区接下来的相关的油气挖潜和勘探部署提供准确的地质依据。     

中国GDP出口分解及贡献新测度

基于全球价值链分解方法,构建国家层面和产业层面GDP出口分解框架,分析中国出口对GDP及GDP增长的贡献和变化机制。研究发现,中国国家层面和产业层面出口对GDP及GDP增长的贡献均呈现先增后减的倒“U”形特征。制造业贡献起主导作用,需要巩固传统优势,培育新优势;占国内生产总值比重较大的服务业贡献相对较小,需要进一步提升国际竞争力;贡献的变化主要是基于产业增加值出口比重的增长,产业结构变动产生了一定的阻碍作用。     

政府资助、项目筛选和企业的创新产出——来自科技型中小企业创新基金的证据

政府资助对企业创新产出的影响一直以来在学术界没有一致的结论。而且,较少研究涉及公共研发资助中项目筛选机制对最终效果的影响。我们的研究检验了中国规模最大的面向中小企业的政府创新基金——科技型中小企业创新基金对企业创新产出的影响,以及筛选机制的变化对创新基金效果的作用。基于企业层面的面板数据,我们发现创新基金资助的企业比没有被创新基金资助的相似企业在专利数量、新产品产值和出口方面有更好的表现,而且这一效果在2005年筛选机制从集权到分权的改变后显著增强。创新基金的效果以及筛选机制变化对创新基金效果的影响在不同地区有很强的差异性,经济和制度越发达的地区,创新基金的效果和筛选机制的作用越明显。     

Uncertainty,Specialization and Government Intervention

We use a one‐factor two‐sector model of comparative advantage with uncertainty to compare the effects of different specialization levels on growth under various scenarios. We derive the static and dynamic optimal level of specialization under the centralized and the decentralized economy. We identify the conditions under which the socially optimal specialization level entails positive investment in the comparatively disadvantaged sector. We show that in this case the socially optimal solution cannot be reached by the decentralized economy which is in fact characterized by over‐specialization. We conclude presenting a simple tax‐based redistributive mechanism able to achieve the optimal level of specialization in a decentralized economic system.     

The Poisson Log-Bilinear Lee-Carter Model

Abstract

Life insurance companies deal with two fundamental types of risks when issuing annuity contracts: financial risk and demographic risk. Recent work on the latter has focused on modeling the trend in mortality as a stochastic process. A popular method for modeling death rates is the Lee-Carter model. This methodology has become widely used, and various extensions and modifications have been proposed to obtain a broader interpretation and to capture the main features of the dynamics of mortality rates. In order to improve the measurement of uncertainty in survival probability estimates, in particular for older ages, the paper proposes an extension based on simulation procedures and on the bootstrap methodology. It aims to obtain more reliable and accurate mortality projections, based on the idea of obtaining an acceptable accuracy of the estimate by means of variance reducing techniques. In this way the forecasting procedure becomes more efficient. The longevity question constitutes a critical element in the solvency appraisal of pension annuities. The demographic models used for the cash flow distributions in a portfolio impact on the mathematical reserve and surplus calculations and affect the risk management choices for a pension plan. The paper extends the investigation of the impact of survival uncertainty for life annuity portfolios and for a guaranteed annuity option in the case where interest rates are stochastic. In a framework in which insurance companies need to use internal models for risk management purposes and for determining their solvency capital requirement, the authors consider the surplus value, calculated as the ratio between the market value of the projected assets to that of the liabilities, as a meaningful measure of the company’s financial position, expressing the degree to which the liabilities are covered by the assets.     

Empirical Research in Continuous Disclosure

Empirical analysis has much to offer the world of continuous disclosure, and with the emergence of larger datasets on which to perform such analyses empirical studies have begun to bear some interesting fruit. This commentary discusses recent work and areas for future development in this space.     

我国PET软饮料包装产品市场分析

近年来,由于PET包装产品所具有的广泛用途和节约能源、利于环保的特性,在发达国家被越来越广泛地使用。随着包装产业的不断发展和新兴企业的不断崛起,同行业竞争日益激烈,企业赢利空间缩小,经营效益不容乐观。本文在深入调查的基础上,对国内外行业环境进行了剖析,指出PET包装产品的行业经济特点,并分析了市场状况,包括市场的需求特性、购买者决策特征和本行业的工业购买者特征等。在此基础上,根据波特的竞争理论分析了行业的五种竞争力,希望对行业内的中国企业做出一定的借鉴和参考。     

基于美国COSO框架下的企业税务风险管理

税务风险作为企业管理不可或缺的一项内容,是内部控制框架中的关键环节。文章正是基于COSO报告中的企业风险管理的框架体系,从税务风险管理现状分析入手,从内、外部因素的角度剖析了税务风险形成的动因,最后根据COSO内控五要素,构建起我国的企业税务风险管理框架体系。