峰谷分时电价的现状分析与发展趋势探讨

分时电价以经济学均衡价格为理论依据。它在引导客户合理用电、削峰填谷、优化电力资源配置等方面起了积极的作用。但它也存在分时价差幅度小、时段划分长、缺乏灵活性及实施范围窄等问题。完善分时电价运行机制,由分时电价向实时电价转变。     

Identifying airline cost economies: An econometric analysis of the factors affecting aircraft operating costs

This paper provides the results of an econometric analysis of the influences of airline characteristics on the average operating costs per aircraft movement. The analysis combines a comprehensive selection of airline-output variables, airline-fleet variables, and airline-market variables. The results confirm the existence of economies of density, economies of load factor, economies of aircraft utilisation and economies of aircraft size. The paper does not provide evidence of economies of scale, economies of stage length or economies of fleet commonality. Furthermore, airlines that additionally operate full freighters, airlines that are members of a worldwide alliance and airlines that operate a multi-hub system face higher average operating costs per aircraft movement. Surprisingly, the regression results demonstrate that airlines that use newer aircraft have higher average operating costs per aircraft movement, suggesting that ownership costs (depreciation and leasing costs) of new aircraft outweigh the increasing maintenance costs of old aircraft. Finally, the results show that airlines that have a dominant position at their hubs or bases have higher operating costs per aircraft movement, implying that the absence of serious competitive pressure enables airlines to charge higher ticket prices and, with that, leads to a limited focus on cost savings.     

Market maker competition and price efficiency: Evidence from China

We test the relationship between market maker competition and stock price efficiency. Using the number of market makers as a proxy for competition, the results show a strong positive correlation between competition and stock price efficiency. Moreover, price efficiency is higher when competing market makers have higher research ability. We suggest that market maker competition increases price efficiency through two channels: 1) Competition decreases transaction costs, and 2) Uninformed market makers learn from orders submitted by informed market makers through competition. The latter happens only in the group of market makers with higher experiences. The results imply that the price efficiency can be improved by enhancing the competition of market makers with high research ability and experiences.     

Competition in the stock market with asymmetric information

We build a game theoretical model to examine how the level of information advantage of insiders and the competition between insiders and sophisticated investors affect stock price movements and traders’ trading strategies and profits. We show that the competition between insiders and sophisticated investors can reduce the losses of less sophisticated investors, and thus alleviates the disadvantaged position of the less sophisticated investors. Further, traders’ profits are affected by the accuracy of insiders’ private information, and the number of days that insiders have obtained the information in advance. These findings show the importance of information transparency and the role of sophisticated investors in limiting insiders’ trading advantages and mitigating the expropriation of investors by insiders.     

When companies improve the sustainability of the natural environment: A study of large U.S. companies

In light of the call for companies to abandon current approaches to environmental management, this study adds to the environmental strategy literature and uses the evidence of competitive dynamics among companies to identify a mechanism by which companies invest in proactive environmental strategies and thereby improve the sustainability of the natural environment. An examination utilizing fixed effects regressions on a sample of large U.S.‐based companies reveal that even after controlling the number, environmental and financial performance of leading (environmental) companies, laggard (environmental) companies are more likely to invest in proactive environmental strategies when their leading peers display higher sustainability orientations. Neither the expectation of government regulation nor social movement pressure was found to be influential in this relationship. Therefore, the future dominance of companies' investments in the sustainability of the natural environment will be driven by companies themselves as long as competitive advantages are expected.     

运动休闲——运动导向转变的力量

运动休闲在个人、社区以及国家(社会)的生活中正逐渐被看作一种强有力的导向性因素,它可以提高社区文化的生活品味,改善人们的生活状况,还可以影响国家政策制定者的行动指向以及国家整体生活状况的幸福指数。     

新公共管理运动背景下税收管理的国际比较及对中国的启示

20世纪70年代末80年代初,伴随着经济上新自由主义思潮的兴起和信息技术革命的浪潮,西方国家掀起了一场新公共管理运动。新公共管理运动给西方国家税收管理方式带来了巨大变化,并对税收征纳成本的有效控制起到了积极作用,本文总结他国经验,以期从发达国家税收管理制度设计和安排上得到一些解决我国目前问题的有益借鉴。     

高职院校开展定向运动的价值

通过对定向运动的功能、特点和价值以及社会发展对学生整体素质的要求和高职院校体育教学改革趋势的综合分析,认为在高职院校开展定向运动不仅可以增强体质,提高学生的综合素质和能力,同时也适应了高职院校体育教学改革和素质教育发展的需要。     

欧盟关于人员自由流动的立法特点及其启示

欧洲联盟内部人员自由流动,同商品、服务和资本的自由流动一起,构成了欧洲经济一体化的基本内容.人员在成员国之间自由流动,直接冲击成员国现行的经济、社会等制度,因此往往遭遇障碍和歧视.欧盟从建立时起,就注重对人员自由流动的法律调整,并形成了自己鲜明的立法特点.我国正处于城市化的高潮时期,人员流动正迅速发展.我们应该借鉴欧盟的经验,加强人员流动方面的立法,以确保人员流动有序进行,促进改革开放的健康、和谐发展.