强化政府引导服务功能 提高企业整体创新能力

怀化是一个欠发达的山区,要发展、壮大民营经济,提升民营科技企业整体创新能力,必须注重发挥科技部门职能作用,强化政府引导服务功能。     

The ‘demographic timebomb’ and how some hospitality employers are responding to the challenge

The phrase ‘demographic timebomb’ has taken on the aura of a shibbholeth and that everyone knows they ought to be fearful about. But is it really understood and what needs to be done? This article seeks to answer these questions and to shed some light on the employment strategies being developed by some British hospitality employers to counteract the demographic changes of the 1990s. As a result, some of the myth that the hospitality industry is lagging behind other industries can be dispelled but other findings support popular testimony that the industry faces special problems.     

A Pricing and Hedging Comparison of Parametric and Nonparametric Approaches for American Index Options

This article investigates the extent to which options on theAustralian Stock Price Index can be explained by parametricand nonparametric option pricing techniques. In particular,comparisons are made of out-of-sample option pricing performanceand hedging performance. The dataset differs from many of thoseused previously in the empirical options pricing literaturein that it consists of American options. In addition, a broaderspectrum of techniques are considered: a spline-based nonparametrictechnique is considered in addition to the standard kernel techniques,while the performance of a Heston stochastic volatility modelis also considered. Although some evidence is found of superiorperformance by nonparametric techniques for in-sample pricing,the parametric methods exhibit a markedly better ability toexplain future prices and show superior hedging performance.     

Optimality conditions¶and bubbles in sequential economies¶and bounded relative risk-aversion

We provide specific qualifications in order that Kuhn–Tucker type Euler equations and transversality conditions at infinity hold in stochastic equilibrium models with heterogeneous agents and where assets are traded in sequential markets. It is not assumed that uncertainty is modeled as an event-tree structure or that preferences are necessarily bounded. We also describe an important class of preferences based on bounded relative risk aversion which yields relevant simplifications. Our results are used to establish conditions that rule out asset pricing bubbles. Specific examples of economies with bubbles are also discussed. Received: 28 January 2002 / Accepted: 19 July 2002 We are grateful to the editor and an anonymous referee for their valuable comments. This research was partially supported by MURST (Italy), National Group on “Nonlinear Dynamics and Stochastic Models in Economics and Finance”.     

Theory and practice of value management and its innovation for natural resources from the perspective of sustainable development

The supreme obstacle for sustainable development of natural resources is the scarecity, bottleneck. So how to promote the sustainable utilizing and increase the using efficiency of natural resources is worth studying. This paper suggests that we should improve the model and means of evaluating method and value management based on th~ theory of natural resource compensation. This paper discusses the User Cost Method based on the microeeonomicaspect which can change the evaluating method for natural resources. From the perspective of value managemen model, we should use the User Cost Method to realize the linkage and integration of micro and macro eompensation for natural resources. Based on the evaluating and aecounting idea User Cost Method, this paper presents a theo. retical framework to harmonize and link micro and macro compensation for natural resources. At present, we should seek the new approach and method to manage natural resources, so can we realize the capitalization managemen focusing on the vahte management for natural resources.     

利用OLE技术实现Excel与dBase的通信

论述了一种基于OLE自动化技术、利用Excel的OLE对象实现Excel与dBase数据库之间进行通信的方法，并给出了在VB下实现该技术的主要代码。     

我国上市公司资本结构的评价模型

加入世贸组织 ,将对我国国有商业银行的银行业务、优质客户、人力资源和资产质量造成严重的冲击 ,为此 ,国有商业银行必须采取五个方面的对策 :增强银行实力、开展业务创新、提高服务质量、完善人力资源管理制度和加强资产质量管理。     

基于SPC的喷漆线产品质量改善

针对汽车配件制造企业喷漆车间中的喷漆线,应用统计过程控制(SPC)技术对影响喷漆线产品质量的因素进行分析,着重对影响喷漆线产品质量的人为因素进行量化,并建立方程进行研究,找出了影响喷漆线产品质量的主要因素,并提出了相应的改进意见。     

Evolutionary Stability in the Investment-Opportunism-Retaliation Game

Can economically efficient outcomes be obtained and sustained in the absence of externally enforced property rights? We study the evolutionary properties of a game that exhibits two well-defined Nash equilibria: one generates an inefficient outcome while the other set generates an efficient outcome supported by the potential for retaliation. Although standard forward-looking refinements eliminate the efficient equilibrium, neither equilibrium type satisfies strict evolutionary stability criteria. However, both types of equilibrium define strategies that are neutrally stable, which makes them vulnerable to drift in dynamic environments. We conduct computer simulation experiments in which players learn adaptively via a tournament selection mechanism called sophisticated experimentation. Our simulations demonstrate that while the system spends a disproportionately high proportion of time in the inefficient equilibrium set, the efficient equilibrium is pervasive as the system drifts back and forth between the equilibrium sets, never settling on one or the other.     

CALL及其制约因素刍议

当今世界,计算机已被广泛应用于语言教学。计算机辅助语言教学经历了行为主义的计算机辅助语言教学、交际的计算机辅助语言教学和整体的计算机辅助语言教学三个主要阶段。运用计算机辅助语言教学有助于激发学生的学习动机,为学生提供真实的学习材料,促进学生进行更广泛的相互交流活动,提高学生的个体化学习能力,鼓励学生从单一信息源中脱离出来,促进全球化的共识等。但是,计算机辅助语言教学也有其制约因素,文章从财政困难、计算机软件和硬件的可利用性、技术与理论方面的障碍以及技术的接受等四个方面对此进行了阐述。