延伸售后保证服务对电子产品供应链决策的影响分析

文章研究了延伸售后保证服务对电子产品供应链决策的影响,分析了三种不同"延伸售后保证服务"提供模式的最优决策问题,结果表明:当服务成本相同时,分散决策结构下,零售商提供延伸售后保证服务,能够降低零售价格和延伸售后保证服务价格,可以获得较高的经济效益与社会效益;无论是分散决策还是集中决策,延伸售后保证敏感系数对不同模式最优决策的影响是一致的,零售价格与批发价格是其增函数,供应链各成员的利润、延伸售后保证服务价格是其减函数;当集中决策时,无论是制造商还是零售商提供"延伸售后保证服务",集中决策有较低的零售价格,和更高的"延伸售后保证服务"价格,延伸售后服务成为系统利润增加的保证。     

河南省城镇居民消费结构的比较实证分析

本文根据扩展线性支出系统模型的计算结果,通过横向和纵向比较,发现河南省城镇居民消费水平已经提高,消费结构已经得到提升,交通通信等享受性支出已经成为重点消费支出项目,但基本生存型消费仍然占较大比重,而且城镇居民收入差距对消费状况造成一定程度的影响。为此,提高河南省城镇居民收入水平是解决问题的根本途径,同时,消费信贷种类的增加,社会保障水平的提高等也是解决问题的有效方法。     

微电解法预处理制药废水的研究进展

介绍了微电解法处理废水的作用机理与特点,总结了近年来微电解法应用于各类制药废水预处理中的工作条件及其效果,并论述了新型微电解反应器的开发研究现状和发展趋势。     

Credit Events and the Valuation of Credit Derivatives of Basket Type

Thispaper provides a simple model for valuing a credit derivativewhose payoff depends on the identity (or identities) of the first(or first two) to occur of a given list of credit events, suchas defaults. The joint survival probability of occurrence timesof credit events is formulated in terms of stochastic intensityprocesses under the assumption of conditional independence. Basedon the joint survival probability, we can easily obtain the pricingformulas of such credit derivatives under the risk-neutral valuationframework. When the default intensity processes follow the extendedVasicek model, closed-form solutions of the pricing formulasare given.     

Mental Accounting,Access Motives,and Overinsurance*

The access motive for insurance posits that insurance derives its value from providing access to a loss remedy that is unaffordable without insurance. I explore the potential of this alternative insurance motive to explain attitudes towards modest risks, and I argue that mental accounting makes the access motive relevant for understanding both the popularity of warranties and the avoidance of deductibles. The value of partial insurance is shown to critically depend on the way in which the insurer pays benefits. This can explain several empirical regularities that are difficult to reconcile within existing models.     

Extending the input–output model with assets

In this paper, the input–output model is extended with assets. It allows us to examine the various assets that are held and used in production. The requirements of assets that must be held by each sector can thus be specified. Extending the input–output model with assets provides a better alternative to the capital stock matrix in the standard Systems of National Accounts. The input–output model is extended by taking the depreciation of fixed assets into full account. This extension allows for the calculation of total holding coefficients that express the amount of assets that are required to be held in each sector in order to satisfy a unit of final demand. In addition, a dynamic version of the extended model is presented. The extended input–output model has been widely applied in China for various purposes.     

基于模拟退火算法的混流生产线投产排序研究

建立了混流生产线投产排序数学模型,并运用解大规模组合优化问题,特别是NP组合优化问题的有效近似算法--模拟退火算法对该问题进行求解。通过算例比对,该方法在求解质量上优于目标追迹算法,从而证明模拟退火算法是一种能够有效解决混流生产线投产排序问题的新方法。     

我国废弃电子电气产品的回收体系研究

介绍了废弃电子电气产品的回收处理现状,结合生产者责任延伸制度,从法律、管理、企业、收费等方面探讨了在我国废弃电子电气产品回收体系的建设,并提出了建议.     

基于EPR逆向物流系统的信息反馈机制的构建

在EPR约束下的逆向物流系统存在严重的信息不对称,在生产商、中间商、第三方回收机构之间的信息、技术交流上存在瓶颈。构建信息反馈机制．初步提出了反馈机制的运作并对信息反馈机制所包含的几种反馈关系作了阐述。信息反馈机制是生产商责任延伸制度在技术交流上的体现,是环境管理的进一步发展。     

应用Fluent软件模拟布风装置中的气流分布

采用Fluent软件对增设布风板前后的气流分布进行模拟,研究结果表明,增加合适孔径的布风板后,气流分布的均匀性得到明显提高,从而提高气体的处理效率。并对布风板的孔径最佳值、圆孔分布形式、孔径与整体布风装置尺寸的关系以及孔径和布风装置进口之间的关系进行了研究。结果表明,应用Fluent软件进行布风板气流分布的数值模拟,能够准确地反映上述各种参数条件下布风板气流的实际流动规律。Fluent软件对空气管路布风装置的设计与应用具有重要的参考价值。