中国区域农业科技资源配置能力及比较优势研究*——基于省级农业科学院视角

[目的]通过测算各地区农业科技资源的配置能力,分析其比较优势并找出不足以便弥补差距,促进各区域农业科技配置能力的提高,为各地区农业经济的发展提供支持。省级农业科学院作为各省市规模最大、综合实力最强的农业科研机构,是农业科技创新的重要主体之一,分析其科技资源配置能力具有重要的现实意义。[方法]基于2009—2016年相关数据,遴选了有代表性的评价指标体系,运用突变级数法计算农业科技资源配置能力,运用NRCA模型定量分析农业科技资源配置效益的比较优势。[结果]山东农业科学院科技资源配置能力位居全国第一,甘肃、江苏、青海农业科学院分别在农业科技人力、物力、财力资源方面具有明显的比较优势。[结论]省级农业科学院科技资源配置能力区域差异十分明显,但区域格局变化不大,且大致与各地区经济实力相吻合;农业科技资源配置能力较高的农业科学院大多在农业科技物力资源配置效益方面具有比较优势,在农业科技人力、财力资源配置效益方面不具备比较优势。     

Cross-national differences in stakeholder management: Applying institutional theory and comparative capitalism framework

Drawing upon the research in institutional theory and comparative capitalism, the present study investigates how cross-national differences in the political, business, and economic institutional contexts of the United States, Italy, and Japan are associated with the ways in which companies in each of these countries prioritize and engage in their stakeholder engagement activities (SEAs). Using Porter and Kramer's framework, which classifies corporate social responsibility (CSR) activities as falling into four categories (good citizenship, mitigating harm from value chain, transforming value chain activities, and strategic philanthropy), we investigate how companies in the United States, Japan, and Italy prioritize and engage in these four SEAs. An analysis of data collected from 340 companies across these countries reveals that while companies in each of these three countries undertake the four types of SEAs, the prioritization and prevalence of the four types of SEAs vary from one country to the other, in ways that align with the prevailing institutional contexts of each country. The results contribute to a more nuanced understanding of why and how companies' approaches to CSR differ across countries. From a practitioner's perspective, the findings highlight the cultural specificity of CSR, implying that despite the global nature of CSR, the implementation of CSR needs to be tailored to a country's context.     

Relative risk aversion, relative prudence and comparative statics under uncertainty: The case of (μ, σ)‐preferences

From the expected‐utility approach, relative risk aversion being smaller than one and relative prudence being smaller than two emerge as preference restrictions that fully determine the optimal responses of decisions under uncertainty to certain shifts in probability distributions. We characterize the magnitudes of relative risk aversion and relative prudence in terms of the two‐parameter, mean‐standard deviation approach. We demonstrate that this characterization is instrumental in obtaining comparative static results in the two‐parameter setting. We further relate our findings to the results in the expected‐utility framework.     

论法律不完备性与政府介入期货市场

在期货市场上，法律不完备性问题表现得较为突出，法律对于侵害行为的阻吓作用非常有限、期货市场法律的不完备性，主要取决于期货市场的特点和性质。政府采取相关的监管方式管理期货市场非常必要，监管的介入需要满足标准化和损害（外部性）足够高的条件。政府管理期货市场立法和法院执法的作用不可或缺，但更主要的是采用监管的方式。     

经济全球化对我国投资条约缔约实践的影响

经济全球化背景下国际投资规则呈现自由化、多边化的发展态势，中国在日益激烈的吸引外资的竞争中应该积极参与区域投资条约，制定参与WT0框架下多边投资条约的战略。     

Bankruptcy laws and debt renegotiation

This paper analyzes the effect of the toughness of bankruptcy law on the number of liquidations in a simple model of borrowing and lending with asymmetric information, where the creditor cannot credibly commit to liquidate the firm if the default occurs. In our setting we consider a bankruptcy law to be a one-dimensional variable that influences creditor's expectation value of collateral. We find that there is an interval of the bankruptcy law, where the number of liquidations decreases in the toughness of the bankruptcy law. We also find that if the liquidation costs are high, softer bankruptcy law is preferred.     

Competition Policy: What are the Costs and Benefits of Measuring its Costs and Benefits?

Summary  Competition authorities are increasingly measuring the effects of their enforcement actions, seeking a robust justification for the proliferation of competition policy. We highlight the importance of identifying the right counterfactual against which to measure effects, and set out the relevant categories of costs and benefits. We then explore how a balance can be struck between the benefits and inherent limitations of these measurement exercises. Relatively crude analyses of cartel action benefits can be sufficient to achieve public legitimacy for competition policy. Assessing the effects of merger and conduct inquiries is often ambiguous, but could be used to improve decision-making processes. Director and Managing Consultant, respectively, at Oxera, Oxford and London. The valuable comments of Fod Barnes, Kerry Hughes and an anonymous referee are gratefully acknowledged. The opinions expressed in this article are those of the authors alone.     

A note on the existence of unique equivalent martingale measures in a Markovian setting

Simple sufficient conditions for the existence of a unique equivalent martingale measure are provided. Furthermore, these conditions give us a handle on situations where an equivalent martingale measure cannot exist. The existence of a unique equivalent martingale measure is of relevance to problems in mathematical finance. Two examples of models for which the question of existence was unresolved are studied. By means of our results existence of a unique equivalent measure up to an explosion time is proved.     

烯烃装置的绩效分析—一种微观经济的比较研究方法

所罗门管理咨询公司（SAI）是成立于1981年一家美国咨询公司，其经营特色是通过研究企业（客户）绩效确定其获得成功的关键因素，并通过同类企业绩效对比研究的方法，为企业（客户）指明改进绩效跻身先进的途径和措施，创建20年来以其独有的服务特色和经营理念赢得了广大客户，行业覆盖面由初始的炼油，扩大到目前包括石油，化工，造纸，汽车制造，运输，电力，银行等多个领域，成为在某些行业，特别是炼,石化行业颇具声誉的咨询机构，其中企业绩效分析评估更是该公司时间最久，又最具领先地位的核心业务，即以石化行业中的烯烃工厂为例，就已八，九十家作为客户参与其每二年一次的绩效分析活动，我国于1998年开始有一家参与了ASI的第7次全球烯烃绩效分析，参评情况当时就受到了业内领导层重视，以国于1998年开始有一定参与了SAI的第7次全球烯烃绩效分析，参评情况当时就受到了业内领导层重视，以后陆续又有多家企业参加，使这一方法在国内有愈来愈大的影响，希望了解并对此感兴越的人士也逐渐增多，为了实践本刊关注新热点的报道方针，本刊在2000年即着大的影响，希望了解并对此感兴越的人士也逐渐增多，为了实践本直关注新热点的报道方针，本刊在2000年邓着手组织有关这方面的搞件，本文即为其中之一，由于出版安排的原因（其中也有尽先刊载SAI作者来稿的考虑），延至本期才得以达览，而其间，应《 乙烯工业》要求，在该刊2001年第1期上先行发表，则是为了配合中石化集团公司七展烯烃装置绩效比较分析活动的需要，所作出的适应性调整而为之的，请读者谅察，同时本刊热希望并允迎已尼参与此项工作的科技，经济工作者，充分利用本刊这个载体，就绩效分析这个题目，与读者进行更具体，更务实的沟通与交流。所罗门管理咨询公司（SAI）的烯烃装置绩效分析方法是一种将同行各装置进行相对比较，然后确定各装置在其产的相对位置的方法，该方法与国内现行的竞争力分析方法相比更具科学性和可比性，此方法中包含了许多国内企业比较陌生的概念和做法，在此对该方法的特点，作用以及参评装置在提供数据时应注意的问题作了简单介绍，并以国内较早参与此项工作的J装置为例，介绍了该方法进行了情况。