论《诗薮》对古诗创作原则和审美标准的确立

明代胡应麟的《诗薮》是中国一部经典性的诗论专著。本文对其确立的各种诗体的创作原则和审美标准,进行了较为详细的论述。并认为清代的有些诗论主张和审美观念,都曾从中吸取过有益的养料。文中并对胡应麟确立的这些原则和标准的原因与既成条件,以及对后世的利弊影响,也进行了较为客观的分析和评价。     

基于LMK准则的前馈神经网络盲多用户检测算法

提出了一种基于前馈神经网络的盲多用户检测算法,该算法基于最小平均峰度准则构造了一个代价函数,给出了算法的约束条件,利用罚函数方法对带约束的代价函数进行优化,获得前馈神经网络网络权值的迭代公式,从而实现盲多用户检测。计算机仿真结果表明,新算法具有较强的多址干扰抑制性能。     

从当前网络语言现象看语言规范问题

语言文字是人与人之间沟通的桥梁,也是一个民族文化的重要标志之一。为适应政治、经济、文化等领域人类社会活动的需要,语言的规范使用,其重要性不言而喻。然而近年来,随着我国政治、经济、科技和文化各方面的迅速发展,尤其是网络的普及,社会生活中各类语言现象不断地像潮水般涌来。对网络语言应该区别对待,把那些符合语言发展规律的语言现象固定下来加以推广,使之广泛地为人们的交际服务,而对于那些不符合语言发展规律的成分和用法,则应该根据规范化的要求,按照约定俗成、逐渐规范和词竞众择、适者生存原则,优胜劣汰,取其精华,去其糟粕,使之逐步走向规范化。     

关于企业并购成败判定标准的思考

从目前专家学者关于企业并购成功与失败的研究结果来看,国外并购的失败率在60%以上,国内并购成功率仅为20%左右。文章根据西方管理学派的协同效应理论和马克思的社会平均利润率理论,得出应以"并购能否带来更多的社会财富"、"并购后企业经营业绩是否低于同行业平均水平"作为判定企业并购成败的基本标准。     

群体学习研究前沿述评

组织中的各种群体成为影响组织绩效的重要部分,理解组织中的群体是否发生了学习以及如何学习,对预测组织绩效有重要作用。群体学习的前沿成果对该理论统一了理论标准,从认知角度分析群体学习的细节过程,本文在此基础上分析了一些未来的研究展望。     

昆明中小型制造业物流服务供应商选择标准研究

在对昆明中小型制造业物流服务现状进行调研的基础上,分析了制造业物流服务存在的问题,运用层次分析法对物流服务供应商的选择进行分析研究,并提出具体建议措施。     

基于ISO9000族标准的高校科研质量文化建设研究

文章在分析质量文化涵义的基础上,描述质量文化的特征以及建设质量文化的作用,并结合高校科研的特点,提出高校科研质量文化建设的主要路径。     

The Zilcha criteria for dynamic inefficiency reconsidered

We reconsider necessary and sufficient conditions for dynamic inefficiency given in Zilcha (J Econ Theory 52:364–379, 1990, J Econ Theory 55:1–16, 1991) and a critique by Rangazas and Russell (2005). First, we show that the characterization given in Zilcha (1990) for nonstationary economies is correct and correct Zilcha’s proof. Second, using this insight, we complement Rangazas and Russell’s (Econ Theory 26:701–716, 2005) discussion of the counterexamples to Zilcha (J Econ Theory 55:1–16, 1991). Third, we discuss consequences of our results for applied tests of (in-)efficiency based on the Zilcha criteria. We would like to thank Itzhak Zilcha, and in particular Peter Rangazas and Steve Russell for detailed and very helpful comments.     

The ‘inventor balance’ and the functional specialization in global inventive activities

Inventors and organizational assets are inputs of inventive activities which are often provided at a global scale, where countries might specialize in the provision of one or the other type of inputs. We introduce a new patent-based metric, the ‘inventor balance’, to quantify this type of functional specialization, which we discover to be considerable, and we propose a conceptual framework to explain it. We observe a progressive ‘decoupling’ of national sub-systems providing respectively inventors and organizational assets. Moreover, we find that countries with a high level of innovativeness relative to their economic development, high technological specialization, and strong individualistic cultural traits, contribute relatively more inventors than organizations to the global production of inventions.     

Small‐cost asymptotics for long‐term growth rates in incomplete markets

This paper provides a rigorous asymptotic analysis of long‐term growth rates under both proportional and Morton–Pliska transaction costs. We consider a general incomplete financial market with an unspanned Markov factor process that includes the Heston stochastic volatility model and the Kim–Omberg stochastic excess return model as special cases. Using a dynamic programming approach, we determine the leading‐order expansions of long‐term growth rates and explicitly construct strategies that are optimal at the leading order. We further analyze the asymptotic performance of Morton–Pliska strategies in settings with proportional transaction costs. We find that the performance of the optimal Morton–Pliska strategy is the same as that of the optimal one with costs increased by a factor of . Finally, we demonstrate that our strategies are in fact pathwise optimal, in the sense that they maximize the long‐run growth rate path by path.