基于图论的认知无线网络频谱动态分配

在认知无线电网络中，图论与量子遗传算法相结合的频谱分配策略能够提高频谱利用率，但存在早熟和收敛精度不够等缺点。为了解决该问题而实现算法的优化，对图着色理论的频谱分配模型进行数学建模，并针对该模型提出了改进的量子遗传算法。首先，通过使用小生境技术初始化种群，使种群分布更加广泛、算法的收敛度更高；其次，根据进化代数对量子旋转角进行实时动态调整，对染色体进行阈值变异，防止个体陷入早熟，跳出局部解；然后，对干扰约束条件进行重新设计，有效地避免盲目性，提高了网络的公平性和网络效益。仿真结果表明，所提算法有效地提高了频谱利用率，极大地增强了网络系统的性能。     

Behavioral equilibrium and evolutionary dynamics in asset markets

This paper analyzes a dynamic stochastic equilibrium model of an asset market based on behavioral and evolutionary principles. The core of the model is a non-traditional game-theoretic framework combining elements of stochastic dynamic games and evolutionary game theory. Its key characteristic feature is that it relies only on objectively observable market data and does not use hidden individual agents’ characteristics (such as their utilities and beliefs). A central goal of the study is to identify an investment strategy that allows an investor to survive in the market selection process, i.e., to keep with probability one a strictly positive, bounded away from zero share of market wealth over an infinite time horizon, irrespective of the strategies used by the other players. The main results show that under very general assumptions, such a strategy exists, is asymptotically unique and easily computable.     

A simple characterisation for sustained growth

This article considers an inter-temporal optimisation problem in a general form and gives conditions ensuring the convergence to infinity of the economy. These conditions can be easily verified and applied for a large class of problems in the literature. Some applications for different economies are given as illustrative examples.     

How an international ambidexterity strategy can address the paradox perspective on corporate sustainability: Evidence from Chinese emerging market multinationals

Corporate sustainability (CS) is receiving considerable attention from emerging market multinational enterprises (EMNEs), playing an important role in the globalized market. However, theoretical and empirical knowledge about how EMNEs address CS is still scant, and the relationship between internationalization and CS has not been widely explored. This study aims to fill this gap, evaluating the relationship between an international ambidexterity strategy and CS in EMNEs, which highlighted the paradox perspective. Then we develop three hypotheses in which we argue how the dynamic capabilities underpinning international ambidexterity could be considered a driver of CS in EMNEs. We test the developed hypotheses against data from 300 Chinese EMNEs obtained by a survey. Our results contribute to shape ambidextrous international strategies and to consider CS as a springboard for the strategic intent to systematically and recursively outperform global competition. Testing a measurement scale of international ambidexterity, we suggest structural ambidexterity as a strategic option of internationalization that allows the achievement of economic, social, and environmental sustainability objectives.     

校企合作模式对学生体质健康影响的动态分析

以福建卫生职业技术学院2011级与2012级学生为研究对象,运用文献资料法、测试法、实验法和数理统计法等,对校企合作模式下体育课程改革前后学生体质健康数据进行对比分析,结果显示：说明体育课程设置与大学生体质健康密切相关,特别在耐力素质、腹肌耐力、上肢力量影响很大,呈显著差异.对此提出加强对学生体育课学习需求的调查、加快体育教学改革中体育课教学内容和课程体系的改革、改善体育教学条件、完善“课内外一体化”模式,希望在校企合作改革的大背景下,能为顺应高职高专人才培养模式制定科学、合理的体育课程改革提供有力的依据.     

综放工作面动态分次加架技术实践

针对一些不规则布置的综放工作面,介绍了当工作面长度变长时,采取不同的布置及加架方式的优缺点。这对于一些储量较少,地质条件复杂的矿井具有很好的借鉴意义。     

基于煤矿网络动态安全体系的安全账户管理效益分析

针对山西潞安集团潞宁煤业公司实际,在建立动态安全网络体系的基础上,构建安全账户管理体系,通过个人安全技能账户体系的构建,实行标准化考核,违章和事故大大降低,取得了预期的效益。     

基于博弈论的云环境下跨组织知识共享研究

计算技术不仅大大促进了经济的发展,而且在知识管理领域也产生了深刻的影响。基于知识共享行为的动态特征,构建云环境下组织间知识共享的动态博弈模型。研究表明,只有建设有效的搭便车防范措施,才有可能构建积极的知识共享环境,并且知识共享双方云能力的提高有助于促进积极知识共享环境的形成。     

认知无线电研究综述

本文论证了功利导向的市场化改革不是万能的,至少不适合科研领域。科研的根本动力是人对科学问题的兴趣,而功利化冲淡人对科学的兴趣,使人分心、浮躁和思想不自由,因而不是科研的动力;而是科研的阻力。科学产品具有自然垄断性、公共性、外部性和信息不完全性,因而容易使市场失效。在此基础上,文章还分析了中国科学的进步远不如经济的增长的一个主要原因是中国人的实用主义和功利主义的价值观。     

Theory-Driven Choice Models

We explore issues in theory-driven choice modeling by focusing on partial-equilibrium models of dynamic structural demand with forward-looking decision-makers, full equilibrium models that integrate the supply side, integration of bounded rationality in dynamic structural models of choice and public policy implications of these models.