US domestic barter: an empirical investigation

This paper studies the barter industry developed in North America during the 1950s, pointing out some of its main characteristics. Thus, it examines its two main sectors: (i) corporate barter and (ii) commercial barter. Contrary to expectations, the analysis of official data shows that this phenomenon is essentially pro-cyclical for the commercial barter component. Moreover, commercial barter activity turns out to be complementary to the cash economy. While the two sectors display some differences in their pattern, they both help firms to increase their profits.     

合金化对Ni_3Al性能的影响研究

文章介绍了Ni3A1的力学性能，综述了不同合金元素对Ni3A1的力学性能的宏观影响，并大体从微观结构上分析了合金元素对其性能影响的原因。     

鱼刺图评价法在尾矿库溃坝事故中的应用

根据尾矿库现场危险、有害因素辨识结果,概括出尾矿库溃坝事故发主的四个主要因素:施工、排洪、渗流和管理,对主要因素的原因进行归纳、分析,找出了重要原因,应用鱼刺图法评价得到了尾矿库溃坝事故的危险程度和等级,提出了防止这类事故发生的重点安全对策措施,提高了尾矿库的安全管理程度。     

一种奖罚管理模型M(a,b,c,d,R,P)的研究

企业奖罚管理模型的使用可以产生异乎寻常的管理效果。“M（a，b，c，d，R，P）”管理模型的含义是：如果项目承担人没有项目咨询师的帮助，那么他完成了该项目工作将受到数量为R的奖励，否则他将受到数量为P的惩罚：如果项目承担人在项目咨询师的帮助下完成了该项目工作，那么帮助他的项目咨询师将受到数量为aR的奖励．而项目承担人自己仅受到数量为bR的奖励；如果项目承担人在项目咨询师的帮助下没有完成该项目工作，那么项目咨询师将受到数量为cP的惩罚，而项目承担人自己却受到数量为dP的惩罚。     

A general equilibrium framework for the affine class of term structure models

The Duffie and Kan (1966) model, which can be considered as the most general affine term structure formulation, was originally specified in terms of risk-adjusted stochastic processes for its state variables. The goal of the present paper is to derive a Duffie and Kan (1966) model specification under the physical probability measure that is compatible with the formulation given by the authors under the equivalent martingale (money market account) measure. For that purpose, the Duffie and Kan (1966) model will be fitted into a general equilibrium monetary framework. The resulting analytical solution for the vector of factor risk premiums enables the econometric estimation of the model parameters using a time-series or a panel-data approach, and nests, as special cases, several other specifications already proposed in the literature.Received: November 2002, Accepted: February 2004, JEL Classification: E43, G11, G12Financial support by FCTs research grant PRAXISXXI/BD/5712/95 is gratefully acknowledged.     

基于风险资产结构不确定性的商业银行整合风险度量研究

基于商业银行风险资产的动态变化性和资产的多重风险属性,结合 Copula 函数与不确定性理论,设计风险资产结构不确定的商业银行整合风险的度量模型,运用随机模拟、神经网络与遗传算法相结合的求解算法,整合度量中国银行、交通银行和招商银行的市场风险和信用风险,结果表明：模型及求解的方法有效,基于历史数据规律对商业银行整合风险度量,更具优越性和实用性。     

假色槭人工驯化生长特性浅析

通过野生优良绿化树种假色槭的引种驯化和人工繁殖栽培,对其驯化情况、适应程度、生长特点等进行了详细的观测记录和分析研究,提出了相关应用措施和目前存在的问题。     

Climate reputation risk and abnormal returns in the stock markets: A focus on large emitters

Reputation risk is among the possible climate transition risks companies face, especially in emission-intensive industries. Failing to meet stakeholders' expectations about the contribution to climate goals might influence investors' strategies and produce financial damages. We look at the climate-related social media talk in a sample of highly polluting companies. For these companies, reputation risk materialises if their climate talk is perceived as not coherent with their action-taking. We then assess the impact of climate talk on short-term stock market performance, as measured by abnormal returns, and find a positive association between climate-related social media talks and abnormal returns. The strength of this association lowers during peak days of social media attention on climate-related topics.     

中国情境下包容型领导对研发团队创新行为的影响——一个链式中介模型

以企业68个研发团队为研究对象，基于情感事件理论、自我归类理论以及人际互动理论，以“团队投入-团队状态-团队过程-团队产出”为整体逻辑框架，引入个人-团队匹配作为团队状态和团队心理安全感作为团队过程，构建链式中介模型，从团队行为形成机制角度揭示包容型领导对团队创新行为的作用路径。研究发现，企业包容型领导风格能够直接或间接地通过团队成员的个人-团队匹配和团队心理安全感促进研发团队创新行为。既弥补了包容型领导风格在团队创新层面研究的不足，又深化了对团队创新行为形成机制的探索。