生物柴油的现状与发展前景

环境保护对汽车排放提出了越来越严格的要求，生物柴油以其优越的环保性、润滑性、安全性和可再生性受到各国的普遍重视。目前，生物柴油使用最多的地区是欧洲，份额已占成吕油市场的5％；美国能源政策也已把其正式列为一种汽车替代燃料。三个方面的变化显示了生物柴油具广阔的发展前景：二是随着生物柴油与石油柴油价格差的不断缩小，生物柴油的竞争力在不断提高；二是为鼓励进一步使用生物柴油，许多国家相继出台了税收优惠政策；三是世界范围内出现汽车车型柴油化和柴油供应严重不足的趋势，为生物柴油的发展留下了广阔的空间。不我国而言，柴汽比的矛盾日益突出，而开发生物柴油有一定的原料基础，因此意义深远。建议我国探讨与南斯拉夫合作，以促进该项技术的发展。     

Asset specificity and conditional accounting conservatism

Asset specificity, the redeployability of an asset to alternative uses, is a key determinant of an asset's resale value. Asset specificity has a direct impact on a firm's ongoing fair value determination, bankruptcy risk, liquidation value, and abandonment option. We document a significant negative association between asset specificity and conditional conservatism. Further tests reveal that this inverse relation manifests as bad news being less quickly incorporated in earnings as asset specificity increases. We find no difference in the extent to which good news is delayed in earnings for firms conditional on asset specificity. In addition, the documented association is stronger when asset specificity arises from lower within‐industry acquisition activity. The association is also more pronounced for firms that are in less competitive industries, have institutional investors, have limited access to the public debt market, and/or have more unsecured debt. Our findings are noteworthy for regulators and researchers given the recent interest in the determinants of conservatism.     

Complements or Substitutes? Internal Technological Strength,Competitor Alliance Participation,and Innovation Development

While a firm can choose to develop an innovation internally or externally, the internal knowledge development and external knowledge acquisition tend to interact with each other in the innovation process. The present study examines whether internal technological strength and external competitor alliance participation serve as complements or substitutes in innovation development. Built on the knowledge‐based view, this study offers a contingency perspective on the nature of knowledge integration between internal technological strength and external alliance relationships, and how they jointly influence radical and incremental innovation differently. Adopting a random effect negative binomial model specification, a panel data set of 64 pharmaceutical firms over a 15‐year period were used to test the hypothesized effects. The findings indicate that internal technological knowledge strength has an inverted U‐shaped relationship with radical and incremental innovation. More importantly, the findings also demonstrate that the combined effect of internal and external sources of innovation can have differential effects on radical and incremental innovation development. Specifically, competitor alliance participation strengthens the effect of internal technological strength on incremental product innovation while it weakens the above effect on radical product innovation. This suggests that internal and external sources of innovation may complement each other for incremental innovation while they may represent trade‐offs for radical innovation development. The above findings provide empirical evidence for the complexity of pursuing organizational ambidexterity in innovation generation and highlight the importance of balancing the internal and external knowledge sources in pursuing innovation.     

如何成为一个卓越的领导者

一个优秀的领导具有很多的能力和品质,才能发挥巨大的影响作用,引导和吸引下属为实现组织目标而共同努力。本文从领导哲学的角度,探索如何培养卓越领导者。     

Geographical relationships and CEO compensation contracts

In this paper, we empirically analyze the effects that the geographical relationships between chairman and CEO have on the latter’s compensation contracts,based...     

The influencing factors of satisfaction and lending intention in online lending investment: an empirical study based on the Chinese market

This paper develops a platform‐based influencing factors model which considers value perception, risk prevention measure, non‐default experience, trust and incentive gap, to better examine the impact of platforms on investors’ satisfaction and lending intention based on the Chinese market. The results reveal that the first four factors positively influence the satisfaction of the investors, while the incentive gap has a negative impact, and there is a positive association between investors’ satisfaction and lending intention. Some specific features of China’s online lending market are identified, which provides valuable insights for online lending platforms and the government.     

Systematic Mortality Improvement Trends and Mortality Heterogeneity: Insights from Individual-Level HRS Data

Providers of life annuities and pensions need to consider both systematic mortality improvement trends and mortality heterogeneity. Although how mortality improvement varies with age and gender at the population level is well studied, how trends vary with risk factors remains relatively unexplored. This article assesses how systematic mortality improvement trends vary with individual risk characteristics using individual-level longitudinal data from the U.S. Health and Retirement Study between 1994 and 2009. Initially a Lee-Carter model is used to assess mortality improvement trends by grouping individuals with similar risk characteristics of gender, education, and race. We then fit a longitudinal mortality model to individual-level data allowing for heterogeneity and time trends in individual-level risk factors. Our results show how survey data can provide valuable insights into both mortality heterogeneity and improvement trends more effectively than commonly used aggregate models. We show how mortality improvement differs across individuals with different risk factors. Significantly, at an individual level, mortality improvement trends have been driven by changes in health history such as high blood pressure, cancer, and heart problems rather than risk factors such as education, marital status, body mass index, and smoker status.     

Price dynamics in corn cash and futures markets: cointegration,causality, and forecasting through a rolling window approach

Financial Markets and Portfolio Management - This paper examines the causal structure among the daily corn futures and seven cash price series from Midwestern states from January 3, 2006, to March...     

社会地位来源对欺骗行为的影响——来自实验室实验的证据

如何减少欺骗是当前中国社会普遍面临的问题。文章结合社会地位理论和自我概念理论，研究了减少欺骗行为的机制。我们利用实验室实验，区分先赋性和自致性两种地位获取方式，用欺骗博弈来检验不同社会地位来源对欺骗决策的影响。结果发现，个人通过真实劳动获得的自致性社会地位可以显著减少欺骗行为；由于幸运得到的先赋性社会地位不能减少欺骗行为。同时，非物质收益的社会地位比赋予物质收益的社会地位更有效减少欺骗行为，说明物质收益是对市场化自我概念的提醒，从而无助于降低欺骗。研究结果在剔除策略性行为后依然稳健。研究有效验证了Mazar et al.（2008）关于影响欺骗行为的自我概念内在决定机制，并对各类组织提升诚信管理具有重要借鉴意义。