Complex Network of Aviation E-Services in the Belt and Road Initiative: A Heuristic Study of Small Data based on Block Modeling

ABSTRACT

The aviation e-service system is an important part of support for business communication in regions covered by Belt and Road initiative. In exploring the role of airline companies in this system, we examine the structure of the network, which consists of airlines interconnections based on small data of individual attributes of aviation companies in aviation e-services, and study these interconnections across different groups using block modeling. The heuristic solution of airline companies in development of international communication and cooperation is further discussed. Among our policy implications for global managers, we suggest the enhancement of cross-regional cooperation among airlines.     

年薪制“两次喊停”告诉我们什么？

6年来,国企经营者年薪制改革两次因故受阻,这其中存在一些亟待解决的深层次问题。要理性认识年薪制改革当前的目标和作用,认识这一改革的艰巨性和长期性,突出重点,化解主要矛盾,推进年薪制改革顺利进行。     

论商标反向假冒行为及其法律规制

商标反向假冒行为妨碍了他人对自己商标的正常使用，扰乱了正常的市场秩序，欺骗了广大消费者和公众。很多国家的立法都明文对其进行规制，我国现行法律亦从不同角度对其进行规制。当前，对严重的商标反向假冒行为，应予以刑法调整。     

Cultural influences on the design of incentive systems: The case of East Asia

Arguing that culture moderates the potency of various incentives in motivating employees, we propose a culture-contingent model of incentive system design in this article. Four nation-level determinants of culture are identified: historical events, economic/political structure, geographical location, and language characteristics. Based on evidence found in East Asia, specific propositions that either relate a national characteristic to some cultural attributes or predict how a cultural characteristic favours a particular type of incentive system are generated. The implications of this culture-contingent model for incentive system design in multinational firms are discussed.We would like to thank Donna Randall for her helpful comments on an earlier draft.     

Pricing options using implied trees: Evidence from FTSE‐100 options

Previously, few, if any, comparative tests of performance of Jackwerth's ( 1997 ) generalized binomial tree (GBT) and Derman and Kani ( 1994 ) implied volatility tree (IVT) models were done. In this paper, we propose five different weight functions in GBT and test them empirically compared to both the Black‐Scholes model and IVT. We use the daily settlement prices of FTSE‐100 index options from January to November 1999. With both American and European options traded on the FTSE‐100 index, we construct both GBT and IVT from European options and examine their performance in both the hedging of European option and the pricing of its American counterpart. IVT is found to produce least hedging errors and best results for American call options with earlier maturity than the maturity span of the implied trees. GBT appears to produce better results for American ATM put pricing for any maturity, and better in‐sample fit for options with maturity equal to the maturity span of the implied trees. Deltas calculated from IVT are consistently lower (higher) than Black‐Scholes deltas for both European and American calls (puts) in absolute term. The reverse holds true for GBT deltas. These empirical findings about the relative performance of GBT, IVT, and Standard Black‐Scholes models are important to practitioners as they indicate that different methods should be used for different applications, and some cautions should be exercised. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:601–626, 2002     

行为金融学理论综述

证券市场上的种种异象使得人们对主流金融学产生了质疑，行为金融学应运而生。投资者心理和套利限制构成了行为金融学的两大支柱。行为金融学所提出的观点更加切合现实，而且对很多异象都做出了合理的解释。另外行为金融学还建立了自己的模型——行为组合模型与行为资产定价模型，从而成为挑战主流金融学的最大力量。     

供电服务品质维度对用户满意的影响研究

一、引言 电力是国民经济的基础性能源，对国民经济的发展起着重要的支持和保障作用。同时，电力也是广大人民群众生活所必需的能源。所以，电力市场运行的好坏，直接影响国民经济的安全运行和健康发展，是关系国计民生的大事。所以，对供电企业提供的产品与服务就提出了更高的要求，供电企业不仅要为客户提供安全、优质、方便、清洁的电能，     

完全BTO模式下的汽车物流与环境

描述了国内库存在汽车生产厂的上下游积压的现象,汽车生产与客户需求的完全脱节是重要原因,指出BTO是解决这个问题的可行方法,介绍了缩短OTD时间为3天的3daycar系统中可为国内汽车业借鉴的特征,从汽车物流的入厂物流与出厂物流两个方面论述了物流模式改变对环境产生的影响,并提出了为打造可持续发展的汽车物流对策。     

中国多市场共存经济体系的实证研究

通过对已有区域经济的研究成果进行分析，指明这些研究还没有真正深入到市场体系自身特质。文章继而提出了多市场体系的假设，并认为不同性质的生产函数是区分不同性质市场的关键，随后按照经济体系由小到大的范围进行了检验，证明了按照八大经济体系划分可以较完整地保留原来各省份生产函数的特征。