产军协同、政府科技支持与技术创新效率研究

运用空间数据分析方法，检验产军协同、政府科技支持与技术创新效率在我国省域间的分布格局。研究表明，三者均存在显著的正向空间相关性，即正向空间溢出效应，并且在不同地区形成局部空间集聚，存在高低非均衡的“俱乐部”现象。基于空间误差模型和空间滞后模型，实证检验产军协同、政府科技支持对技术创新效率的影响。结果发现，从全国和分地区看，产军协同、政府科技支持均能够显著促进技术创新效率提升，并且二者存在显著的交互作用，能够发挥彼此间的互补效应，进一步促进技术创新效率提升；不同地区产军协同、政府科技支持对技术创新效率的影响程度存在较大差异，西部地区产军协同、政府科技支持对技术创新效率的促进作用比东部和中部地区显著。     

探讨基础设施PPP项目的全生命周期的动态项目管理

当前,PPP模式不仅在我国基础设施建设中发展前景良好,同时在很多国家得到了广泛应用。相比传统的工程项目建设模式,PPP项目具有风险因素复杂和风险较大的特征,因此,PPP项目的成功会在很大程度上受动态项目管理的有效性影响。对项目管理来说,尤其是动态项目风险管理,应贯穿于PPP项目的全生命周期,而只有实现全生命周期的动态风险管理,才能使PPP模式在我国基础设施建设领域中成功利用。     

The impact of dual network structure on firm performance: the moderating effect of innovation strategy

ABSTRACT

Firm innovation is embedded in a collaboration network among researchers and a knowledge network composed of knowledge elements; the two networks are decoupled. Guided by social network theory, this study puts forward the definition and the classification of firm dual network structure, probes into the influence of dual network structure on firm performance, and explores the alignment between innovation strategy and firm dual network structure. We conduct an empirical study of 183 listed companies in China from 2004 to 2018. It is found that the four types of dual network structure all have positive impacts on firm performance, and the impact of a collaboration network is slightly higher than that of a knowledge network. Besides, innovation strategy plays a positive moderating role in the relationship between dual network structure and firm performance. Our findings provide new ideas for firms to identify and optimise knowledge and collaboration network structures and match them with innovation strategy to improve performance.     

Household responsibility system and China's agricultural Growth revisited: Addressing endogenous institutional change

The rise of the Household Responsibility System has been widely viewed as a significant contribution to China's agricultural growth. However, this empirical conclusion is rested upon a convenient but doubtful presumption that the process of institutional change, also known as decollectivization, is exogenous. We contribute to this literature by explicitly recognizing the endogeneity of institutional changes, and exploit exogenous variations in lagged weather shocks and initial fixed assets for consistent estimation. With improved data on irrigation, mechanization, weather and institutional changes in a provincial panel data during 1970–1987, the results of panel instrumental estimations reveal that the Household Responsibility System had a significantly positive effect on China's agricultural growth, which was larger than indicated by OLS estimates that suffer from adverse selection and attenuation biases.     

Optimizing a portfolio of mean-reverting assets with transaction costs via a feedforward neural network

Optimizing a portfolio of mean-reverting assets under transaction costs and a finite horizon is severely constrained by the curse of high dimensionality. To overcome the exponential barrier, we develop an efficient, scalable algorithm by employing a feedforward neural network. A novel concept is to apply HJB equations as an advanced start for the neural network. Empirical tests with several practical examples, including a portfolio of 48 correlated pair trades over 50 time steps, show the advantages of the approach in a high-dimensional setting. We conjecture that other financial optimization problems are amenable to similar approaches.     

四川省水稻产投特征变迁及技术进步对单产的影响

[目的]了解四川水稻产投特征和技术进步对单产的影响,促进水稻可持续生产。[方法]分析了改革开放以来四川省水稻产投特征和技术特征变动,并基于索洛余值法测算了1980~2015年四川省科技进步对水稻单产的贡献情况。[结果](1)全省水稻单产水平及物质与服务费用投入均呈现波动增长趋势,人工投入逐年递减,但人工成本在生产成本中的比重较大;(2)四川省水稻品种选育、栽培管理技术、推广技术、稻作经营方式和农业政策不断变迁,更适应当前以普通家庭生产和新型经营主体共同发展的局面对技术的需求;(3)整体来看,近36年技术进步对四川省水稻单产水平提高的贡献率较低,生产经营较为粗放;(4)分时期看,2005年前,技术进步对全省水稻单产水平提高的贡献率较高,但之后尤其是近5年,技术进步并未对水稻单产水平提高产生影响,要素投入是水稻单产水平提升的主要因素。[结论]提出了加强科技研发及投入水平、"一主多元"联合推广、生产管理技术培训和丘区节本增效生产的政策建议。     

Dress for success: the effect of exhibitors’ dress conformity and self-construal on attendees’ approach behavior

ABSTRACT

The purpose of the current study is to investigate how attendees’ approach behavior is influenced by exhibitors’ dress conformity. A 2 × 2 between-subjects quasi-experimental design was utilized for this study. Our results showed that conforming dress for exhibitors can lead to a higher level of approach behavior of trade show attendees as compared with nonconforming dress, and the effect of exhibitors’ dress styles on approach behavior is moderated by attendees’ self-construal. Findings of this study provide significant insights for trade show exhibitors and attendees.     

江苏省科技金融发展现状与对策分析

科技金融是一个互动的概念,科技金融的发展是以保持经济高速持续增长为目的。在当前以建设创新型国家为总体战略的目标之下,科技与金融的有机结合还存在着一些问题。在研究和调查了近年来江苏省科技金融的发展现状之后,提出存在的问题及解决途径。     

军民融合时代特征、制约问题与治理路径

我国军民融合已进入由初步融合向深度融合过渡的攻坚期，掌握军民融合宏观发展脉络、研究趋势，客观研判军民融合时代特征十分必要。基于数据可视化，以中国知网数据库（CNKI）中军民融合的CSSCI、CSCD文献为研究对象，梳理归纳军民融合研究热点并进行聚类分析，探讨当前军民融合制约问题，分析军民融合中“统”、“融”、“新”、“深”4个治理要求与内涵定位，进而提出新时代军民融合治理路径，为深入研究新时代军民深度融合高质量创新发展提供借鉴。     

“六经皆史”与马克思主义中国化——经史观及其方法论启示

经史关系是中国思想史的核心问题,贯穿于周秦以来历史发展的全过程。中国共产党一经成立即面临自身独有的经史关系,即马克思主义之"经"与中国实践之"史"的关系,核心命题即马克思主义中国化。值得特别注意的是,马克思主义中国化与"六经皆史"处理经史关系的方法论十分相似。而这并非巧合,有其理论渊源:一方面,中国共产党是中华民族优秀文化之继承者,建党伊始就自觉从中汲取养分;另一方面,范文澜作为关键人物,成为毛泽东与章学诚二者之间的思想榫卯。就在马克思主义中国化命题提出之际,范文澜抵达延安,其所提出的中国经学史演变之宏论深为毛泽东器重。面对类似的经史关系问题,又有关键人物为思想之榫卯,"六经皆史"论与马克思主义中国化二者之间,就产生了内生性逻辑关联,极具方法论启示之意蕴。