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。     

东亚信息技术产业的区内与区外贸易模式实证分析

东亚IT产业发展的贸易模式有如下特点：第一,东亚IT产业的技术来源于美国。通过承接美国计算机企业的“外包”业务,东亚在IT硬件设备制造领域建立了完整的生产体系。第二,东亚与美国的IT产品贸易主要集中在集成电路与电子部件。反映了美国企业将IT中间产品“外包”到东亚区域以降低生产成本,推动了全球IT产品的国际外包浪潮。第三,东亚区域内贸易模式不同于东亚-美国之间的贸易特征．日本、韩国和东盟通过向我国出口集成电路及其电子零部件获得了巨额的贸易顺差,而我国则将进口的集成电路和电子零部件装配成电子产品出口到美国和世界各地。     

Accounting conservatism in a setting of Information Asymmetry between majority and minority shareholders

Following LaFond and Watts (2008), we examine the relation between information asymmetry (as measured by PIN, probability of information-based trading) and accounting conservatism but focus on a country – Taiwan – whose institutional background is different from that of the United States. Due to the disparate degree of conservatism across the world, the conclusions of LaFond & Watts (2008) might not be universally applicable. Our findings support, in general, the applicability of their conclusion to a Taiwan data set. We find, however, that the effect of PIN appears weaker when auditor tenure is taken into account, thus supplementing their conclusions.     

信息信义义务理论之批判

“信息信义义务”理论已掀起网络平台监管争论的汹涌波涛,该理论经由杰克·巴尔金（Jack Balkin）教授发展,旨在“一碗水端平”一般用户与搜集、分析、出卖个人信息为业的数据公司之间的关系。在处理医患关系、律师与客户、会计师与客户的关系时,法律课以医生、律师和会计师特殊的注意、保密和忠实义务。巴尔金教授主张,与之相类似,在处理脸书（Facebook）、谷歌（Google）和推特（Twitter）等公司与终端用户的关系时,也应课以公司类似的特殊义务。过去数年里,该论断赢得了广泛的支持,鲜有敌手。但信息信义义务理论存在潜在矛盾和模棱两可之处,其是否有能力解决上述问题使人生疑。故此,本文揭示上述理论缺陷,意在瓦解“信息信义义务”新理论共识。尽管我们同意巴尔金教授“占主导地位的网络平台造成损害,由此呼唤法律的介入管制”的论断,但我们质疑信息信义义务这套理论是否能充分、恰当地回应所谓的信息不安全问题,更勿论一些更为根本的问题——建立于监视渗透基础上的优势市场份额以及与商业模式相关的根本问题。我们也呼吁重视信息信义义务这一理论框架的潜在成本——我们担心,该理论框架会对网络平台的结构性权利产生一种盲目的自满,也过早地放弃了对公共监管的更美愿景。     

Political uncertainty and firms' information environment: Evidence from China

How political uncertainty affects the supply of value relevant information about a firm is an important but unresolved question. Using an emerging market setting where political leaders are expected to exert significant influence on economic activities, we examine the effect of political uncertainty caused by turnovers of local government leaders on a firm’s information environment. We find that during periods of political uncertainty, the total amount of idiosyncratic information about a firm that is available to the market is reduced. The adverse effect on information supply is manifest in firms that are more politically dependent and stronger when uncertainty is more severe. Further, we provide evidence suggesting that firms react to political uncertainty by reducing the amount and the quality of information provided to investors. We find that information intermediaries such as financial analysts and the media have a moderating effect on the information environment as they increase the production of information during periods of political uncertainty. However, these intermediaries do not negate the net loss of information.     

Complementary technologies,knowledge relatedness,and invention outcomes in high technology mergers and acquisitions

Prior research on M&As and invention outcomes has not systematically examined the influence of two types of knowledge differences. Knowledge relatedness has typically been equated with knowledge similarity and the separate influence of knowledge complementarity has been overlooked. Similarly, studies examining innovation outcomes of M&As have typically focused on the role of technological knowledge and overlooked the influence of scientific knowledge. We develop a model of relatedness and invention performance of high‐technology M&As that considers science and technology similarity and complementarity as important drivers of invention. We test the model using a sample of M&As from the drug, chemical, and electronics industries and a fine‐grained measure of knowledge relatedness that distinguishes between science and technology relatedness. We find that complementary scientific knowledge and complementary technological knowledge both contribute to post‐merger invention performance by stimulating higher quality and more novel inventions. This suggests that high‐technology firms seeking acquisitions should search for, identify, and acquire businesses that have scientific and technological knowledge that is complementary to their own. Our results also suggest that similarities in knowledge facilitate incremental renewal, while complementarities would make discontinuous strategic transformations more likely, and that absorptive capacity research should be expanded to consider complementarities as well as similarities. Copyright © 2010 John Wiley & Sons, Ltd.     

Pragmatism, Pedagogy and Philosophy A Model of Thought and Action in Action in Primary Technology and Science Teacher Education

This article reports on one outcome from a three-year study with pre-service primary teachers at Goldsmiths' College, University of London. The purpose of the study was to evaluate the influence of participants' prior educational experience and beliefs about the relationship between design & technology (D&T) and science on their lesson planning for these subjects during school placements. Data from the study support a three-domain model of pre-service teachers' thinking and action. When operating within the pragmatic domain, participants are primarily concerned with survival in the classroom, resulting in short-term planning which may contradict their epistemological and curricular beliefs. In the pedagogical domain, the focus shifts from the pre-service teacher themselves and their immediate survival to the learning potential of the activities they plan. There is evidence that some participants have progressed to operating within a philosophical domain, leading to clasroom practice which reflects and re-conceptualises pre-service teachers' core beliefs about the nature of, and relationship between, D&T and science. This revised version was published online in July 2006 with corrections to the Cover Date.     

Quality perceptions under evolving information conditions: Implications for diet,health and consumer satisfaction

Consumers’ perception of, and satisfaction with, fruit quality is an important issue for both public policy and commercial reasons. However, because of information problems, consumers cannot easily choose fruits of a quality most likely to satisfy their preferences and health needs. The research reported here employed an experimental auction method to test perceptions of fruit quality by evaluating the willingness to pay (WTP) of consumers for five different varieties of soft citrus under three different information conditions: visual inspection of the fruit before peeling; visual inspection after peeling; and after consumption. Significant differences were found in valuations of the different varieties as consumers gained information. Conclusions are drawn about the value of the methodology and the results themselves, and implications are inferred for policy and for growers and traders. It is argued that product information should be oriented not just towards nutritional education but also towards increasing the pleasure of healthy eating.     

FDI企业对我国私营企业科技创新能力的影响研究

本文利用DEA-Malmquist指数分析方法对FDI企业与我国私营企业2003～2012年全要素生产率进行了测算,结果显示：FDI企业的全要素生产率及增长率都高于我国私营企业。说明FDI企业的科技创新能力要强于我国私营企业。其主要原因是FDI企业通过多种方式和渠道对我国私营企业的科技创新能力产生了重要影响。本文通过实证分析表明, FDI企业主要通过科技创新能力、市场集中度及分工地位对我国私营企业的科技创新能力产生作用。     

中小企业融资与中小银行发展——由中国现实问题引发的理论与实证分析

长久以来困扰我国经济发展的一个突出问题是中小企业融资难、融资贵.本文首先梳理了中小企业融资的理论基础,即基于"软信息"的关系型贷款.在理论分析之后,我们继之以中小企业贷款实证分析的综述,将理论与实证进行了交叉印证.接下来,我们使用中国商业银行资产负债表微观数据,分析了中国中小银行服务中小企业的成功与不足之处.研究发现众...