高管过度自信、研发投入跳跃与企业绩效——来自中国上市公司的经验证据

基于间断平衡理论和高阶梯队理论，以2007-2017年中国沪深两市902家制造企业为样本，实证分析研发投入跳跃对企业绩效的影响以及高管过度自信的调节作用。结果显示：研发投入正向跳跃和负向跳跃均有助于提升企业绩效，高管过度自信正向调节研发投入跳跃与企业绩效间的关系。引入高管过度自信这一重要高管特征作为调节变量，有助于重新认识管理者心理偏差对企业创新行为和绩效的影响，较好地弥补了研发投入跳跃对企业绩效影响机制的研究空缺，丰富了创新间断平衡理论研究。研究表明，企业应重视高管心理特征的影响并结合自身实际情况，合理选择研发投入策略以改善企业绩效。     

《黑骏马》生命意识探析

张承志的《黑骏马》可谓显示草原民族情结的经典之作.白音宝力格和索米亚令人惋惜的爱情、奶奶抚养的无数生命和白音宝力格的最终回归,都源于草原民族对生命的尊崇.本文欲从三个方面探索《黑骏马》的生命意识.     

Keiretsu centrality — profits and profit stability: A power dependence perspective

Prior studies compare keiretsu member firm and independent firm performance. Here, we use historical and power dependence perspectives to theorize that the Japanese keiretsu system primarily benefits the most central firms. We test this by examining the performance of two types of keiretsu firms (central firms and other member firms) within two types of keiretsu (horizontal and vertical). We hypothesize and find that: (1) central vertical keiretsu firms are more profitable than central horizontal keiretsu firms; (2) central horizontal keiretsu firms have greater profit stability than central vertical keiretsu firms; (3) central vertical keiretsu firms are more profitable than non-central vertical keiretsu firms; and (4) central horizontal keiretsu firms have greater profit stability than non-central horizontal keiretsu firms. Implications for managers and future research directions are discussed.     

菱角壳的化学成分和药理活性研究进展

近年来对菱角壳的研究主要分为化学成分和药理活性研究两个方面,其中化学成分方面的研究可以概括为生物碱、酚酸类、萜类和甾体、多糖类、黄酮类5个方面;药理活性方面的研究可以概括为抗癌活性、抗氧化活性、降低α-葡萄糖苷酶活性、保肝护肝活性、抗菌活性5个方面。目前在化学成分方面的研究较弱,从研究结果来看,没食子酸及其衍生物是菱角壳的主要药用成分。最后就菱角壳的开发利用提出了几点建议。     

Performance Stable at the Beginning of 2011

Textile industry this year will face more pressure Q1 Textile Industry’s Performance Conference was unveiled by China National Textile & Apparel Council on May 13.Since the beginning of 2011,the standard for defin ing large-scale enterprises was raised from the annual income of 5 million yuan of main business to the annual income of 20 million yuan of main business, according to the latest news.     

再思社会科学方法论的形式主义与实质主义之争——以经济学的新进展为例

笔者从社会科学方法论中的形式主义与实质主义之争这一古老论题出发,阐明了经济学中的形式主义思想在最近半个世纪的发展是建立细节完全刻画的"全模型",并指出其背后的理念不在于建立普遍规律,而在于形成可以用以启发人们理解经验世界的辅助性认知手段。在澄清全模型方法认识论价值的同时,本文也指出其应用重点不在于形成理想化与意识形态化的叙事,而在于针对局域的经验事实,建立具有确定经验限定意涵的模型化推论,以阐明经验事实背后不易被单纯质性研究阐发的机制。当代经济学方法论显示的这一发展,可以被称为"形式主义经济学的实质主义化",对这一趋势的把握有助于揭示主流经济学独特的认识论价值。     

The Sarbanes‐Oxley Act and the Choice of Bond Market by Foreign Firms

This paper examines the economic impact of the Sarbanes‐Oxley Act (SOX) by studying foreign firms’ choice of whether to issue bonds in the U.S. public bond market or elsewhere before and after the law's enactment in 2002. After controlling for firm characteristics, bond features, home‐country attributes, and market conditions, I find that foreign firms rely less on the U.S. public bond market after SOX. Additionally, some determinants of choosing the U.S. public bond market have changed since the passage of SOX: firms listing equities on U.S. stock exchanges, adopting International Financial Reporting Standards (IFRS), and doing large bond issuances are more likely to choose this market in the post‐SOX period than in the pre‐SOX period. Overall, these results are consistent with a shift in the expected costs and benefits of choosing the U.S. public bond market following SOX. This paper provides the first evidence about how SOX influences debt financing decisions and alters capital flows across international bond markets.     

变压器绕组温升试验及其不确定度分析

本文介绍了变压器正常加载时的温升试验过程和相关事项，并对试验数据进行变压器温升的不确定度分析。     

经济发展方式转型与经济软实力空间分布关联研究——以河南18个省辖市区域为例

经济软实力是决定经济发展方式转型的关键因子,经济软、硬实力的不同配置决定经济发展方式类型。经济软实力不仅内在具有推动经济发展方式转型的能力,而且还具有实现其转型的内在机理。通过河南省区域经济软实力空间分布及其与区域发展指数关联的实证分析,证明以提升经济软实力促进区域经济发展方式转变是经济发展的一种必然规律。     

深度休闲对主观幸福感的影响研究——以苏南地区城市居民为例

深度休闲对优化苏南地区休闲产业建设,进一步提升居民休闲生活质量有重要影响。文章通过问卷调查的方式收集苏南地区城市居民深度休闲行为的数据,研究苏南地区城市居民深度休闲行为特征及深度休闲对主观幸福感的影响。结果发现:(1)苏南地区城市居民进行深度休闲活动的场所主要为户外;(2)闲暇时间不足是限制苏南地区城市居民进行深度休闲活动的主要因素;(3)苏南地区城市居民的深度休闲活动总体程度不高,愿意在深度休闲活动上投入大量时间和金钱的人更是少数;(4)苏南地区城市居民从事深度休闲活动产生的强烈认同感和坚持不懈的毅力对主观幸福感有着显著的积极影响。