Noise traders,firm-specific uncertainty and technical trading effectiveness

This is the first study to document evidence of technical trading effectiveness at firm level in the Chinese A-share market by investigating the relationship between excess profits of technical trading rules and firm-specific characteristics. Our results reveal that firms with higher excess profits from technical trading have more noise traders and higher institutional ownership and that those firms tend to be growth firms with lower liquidity and higher firm-specific uncertainty. Further analysis shows that the profitability of technical trading rules is unsustainable and the excess profits of the highest technical trading profit quintile portfolio disappear in the following year.     

决定企业成败因素的新认识

通过剖析细节主义、战略主义的理论欠缺,文章提出了决定企业成败因素的四大特点：综合性、差异性、阶段性和复杂性.     

国际战略联合的成功之路

世界经济中的种种迹象表明,国际战略联合这一国际化经营的新方式正日益显示出其重要性,并终将成为拓展国际化经营活动的主要方式。作为国际化经营活动主角的跨国公司。     

Modeling society with statistical mechanics: an application to cultural contact and immigration

We introduce a general modeling framework to predict the outcomes, at the population level, of individual psychology and behavior. The framework prescribes that researchers build a cost function that embodies knowledge of what trait values (opinions, behaviors, etc.) are favored by individual interactions under given social conditions. Predictions at the population level are then drawn using methods from statistical mechanics, a branch of theoretical physics born to link the microscopic and macroscopic behavior of physical systems. We demonstrate our approach building a model of cultural contact between two cultures (e.g., immigration), showing that it is possible to make predictions about how contact changes the two cultures.     

基于联合研究实体的国家实验室网络化规律研究

对基于联合研究实体CMI的埃姆斯国家实验室网络化案例分析后发现，拉力（国家战略需求、问题综合复杂）和推力（自身发展追求、自我能力局限）共同驱动国家实验室网络化。强实力、精专业的优质网络节点、相似-差异-分散-役使四重属性叠加的网络关系以及星形网络结构，基于点、线、面三维视角形成了国家实验室网络化基本相态。在国家实验室需求的基础上，网络化规则体系通过实践探索自发生成，且反作用于网络化实践，为网络化文化形成提供了必要条件，成为实验室网络化持续演进的文化根基。最后，从网络化方式、依靠力量、相态、规则、嵌入情景与自主发展5个方面，总结出国家实验室网络化规律对我国国家实验室网络化发展的主要启示。     

Assessment of land use compatibility and noise pollution at Imam Khomeini International Airport

This study aimed to investigate land use planning around airports, by employing Remote Sensing (RS) and Geographic Information Systems (GIS), in conjunction with an optimization algorithm using an Integrated Noise Model (INM) software, to establish the potential effects of aircraft noise at Imam Khomeini International Airport (IKIA) in Tehran. We also checked for land use compatibility with the noise levels around IKIA and the residents' reaction to the noise. The research was carried out in three stages: a) the establishment of Strategic Noise Map (SNM) scenarios of the airport operation in the years 2011, 2020 and 2030 using the INM software; b) the assessment of the results with emphasis on the study area land uses and application of RS and GIS and the exposure of residents at different levels of environmental noise; and c) the assessment of the intensity of aircraft noise annoyance at various times of day and night. The results indicated that developing IKIA together with the residential development will increase airport noise. Hence proper management and control of noise at IKIA is essential.     

多委托代理关系、政策的选择性执行与农村税费改革

农村税费改革在全国全面推行后,在目前的条件下这一政策出现的一些问题能否得到全面深入的贯彻执行的问题引起了学术界的关注.本文运用多委托代理理论来分析中国多层级垂直行政管理体系中的政策执行问题,认为地方基层政府利用政策存在无法执行的可能性以及信息传递中的噪音,从事违背税费改革精神的行为,地方政府出于自身的利益以及要求地方基层政府完成各种政策任务的考虑默许、袒护这一行为,并提出了全面贯彻执行农村税费改革政策所要采取的对策.     

论海外企业的抵补保值

<正> 随着对外开放的日益深入,许多进出口公司为了拓展海外市场,纷纷在海外成立一些行政上隶属本公司,经营上完全独立、自负盈亏的海外企业。这些企业的成立,对公司直接听取消费者意见,了解市场需求,扩大商品销售均起着不可估量的作用。     

Real call options to enlarge foreign subsidiaries – The moderating effect of irreversibility on the influence of economic volatility and political instability on subsequent FDI

This paper develops a real option model to explain the decision of enlarging a new foreign subsidiary by subsequent investment. The model is tested on a panel of 1148 subsidiaries in 22 host countries. The findings complement the traditional process model of firm internationalization. Rather than abiding by an incremental pattern of investment, internationalizing firms seem to keep foreign investment strategies flexible and build up their subsidiaries contingent upon the interaction of economic volatility and irreversibility of investment. However, the moderating effect of irreversibility on the relationship between uncertainty and investment may not hold for downside risks such as political instability.