基于AHP的职业教育MOOCs教学质量评价研究

MOOCs以迅雷不及掩耳之势在教育领域吸引人们注意力,正被越来越多的学习者使用和接受,但如何评价其教学质量成为教学研究者关注的焦点.以目的游离评价模式为指导,借助AHP模糊综合评价法,从5个一级指标、19个二级指标对职业教育MOOCs教学质量进行测量.从测量结果看,使用者对MOOCs教学模式并未表现出明显的满意或者反对,对课程建设和考核较为满意,对平台体验认可度不高.     

美国硅谷成因及其对“世界水谷”建设的启示

在分析自然资源禀赋、人力资源、政府支持、风险资本的孵化力、创新网络经济的形成以及独特文化等美国硅谷成因的基础上,结合"世界水谷"的特点,提出"世界水谷"的建设路径是以优美的自然环境和完善的基础设施为前提,以政产学研金一体化为重点,以营造独特的文化为核心,以面向市场、完善科技成果向现实生产力转化的机制为动力,从而推动"世界水谷"的发展。     

中国竹藤类产品出口潜力研究——基于引力模型的实证分析

基于引力模型,运用2007~2014年8年间中国对24个竹藤类产品贸易伙伴国的面板数据进行实证分析,结果表明:APEC的有关贸易安排对中国竹藤类产品贸易流量的影响较大,美国、日本、澳大利亚等APEC成员国是中国排名前3位的竹藤类产品进口国;贸易潜力测算结果显示中国对这3个国家均存在贸易不足,竹藤类产品贸易还有很大潜力可挖。基于此,提出应进一步加强中国与APEC成员国之间的合作交流,积极推进中国对美国、日本、澳大利亚等APEC成员国竹藤类产品出口向多样化和高质量化的方向发展,尽量选择与中国要素禀赋差异小的国家开展竹藤类产品的贸易等建议。     

一种级联两箱通用数字预失真器及其辨识算法

提出了一种由单形规范线性分段(SCPWL)函数与记忆多项式级联的数字预失真器,并给出了复数域两步最小二乘参数辨识算法。不同于以往一种预失真器适用一种功放模型的情况,所提的预失真算法利用SCPWL函数的分段特性以及记忆多项式的非线性记忆特性,在完成参数辨识的同时自动地调整结构,可适用于传统以及强非线性新型功放模型的线性化补偿。将所提预失真器分别应用于传统记忆多项式、两箱模型以及新型包络跟踪功放。经过计算机仿真,功放输出的幅频特性和频谱曲线表明所提预失真器能够有效地补偿多种功放的非线性特性。算法仿真比较结果也表明,针对包络跟踪功放,所提复数两步最小二乘算法的邻道泄漏比(ACLR)可改善约35 dB,性能优于最小均方(LMS)类算法约30 dB。     

多模噪声理论及其在通信保密中的应用

给出了一种比较通用的非高斯噪声模型——多模噪声,采用无惯性非线性变换器给出了多模噪声中信号的检测与估计方法,该方法对概率密度函数形状对称的噪声是普遍适用的。在此基础上设计了可用于通信保密的多模噪声,说明了本加密方法适用于无线通信信道加密,并从统计分析的角度研究了可能的密码分析方法。     

功能性监管:现代金融业发展的必然选择

在全球化和金融一体化发展背景下，现代金融业向着混业经营方向发展。功能性金融监管在传统的金融监管模式基础上，更加侧重金融效率与金融机构的协调，从而顺应了这一发展潮流，成为现代金融业发展的必然选择。     

中国水果产品的出口竞争力分析及对策研究

中国是世界上最大的水果生产国,但中国的水果产品出口缺乏竞争力,存在着出口品种结构、市场结构、加工结构和产业结构不合理的问题,导致中国是水果生产大国而非水果贸易强国的现象.如何将水果的种植及生产优势转化为贸易优势是中国果业发展所面临的首要问题.分析国内水果出口贸易的现状和特征,指出影响我国水果出口竞争力的因素,最后给出促进水果出口和提高国际竞争力的对策.     

基于4P营销理论的电子商务企业定价策略研究

按照经典的4P营销理论,定价策略应用对企业的发展起着至关重要作用.在简要介绍4P营销理论和电子商务企业概念的基础上,对国内电子商务企业定价策略存在的主要问题进行了研究,进而提出了相应对策建议.     

Do ongoing networks block out new friends? Reconciling the embeddedness constraint dilemma on new alliance partner addition

Research Summary: This study addresses a theoretical dilemma regarding how alliance network constraint (reflected by network cohesion) affects a firm’s alliance formation with new partners. Using a network pluralism approach, we separate a firm’s ego alliance network into two activity‐based networks—an exploratory network and an exploitative network—based on the primary value chain activity involved in each alliance. We argue that the cohesion of exploratory or exploitative networks has an inverted U‐shaped effect on the addition of new partners in the same activity‐based network, and a positive effect on the addition of new partners in the other network. Results based on data from the biotechnology industry largely support our predictions with one exception. Our study contributes to both scholarly understanding of network embeddedness and alliance practice. Managerial Summary: The structure of firms’ ongoing alliance networks may have paradoxical implications for their efforts to search for and form alliance with new partners. That is, when a firm’s alliance partners are tightly connected with each other, the cohesive network tends to both encourage and impede the focal firm to add new partners. We resolve this dilemma by showing that when a firm is deeply entrenched in a cohesive alliance network conducting a certain type of activities (e.g., R&D activities), it may not easily add new R&D alliance partners. However, it may still be able to escape from the cohesive R&D alliance network by seeking new partners conducting other activities (e.g., manufacturing activities).     

Resource Dependence and Network Relations: A Test of Venture Capital Investment Termination in China

This study examines how venture capital (VC) firms terminate investments in an emerging economy context. We contend that due to the weak institutional environment, it is appropriate to draw on insights from power and social relation perspectives for a better understanding of the phenomenon. Specifically, we argue that a termination decision hinges on not only the dependence relationship between a VC firm and its portfolio companies, but also the social relationships among VC firms. Event history analyses of approximately 12,000 VC deals made in China between 2001 and 2012 reveal that when a VC firm has a greater number of investments in an industry, it is more likely to terminate investments on a portfolio company in that industry. Moreover, such effect on termination is moderated by the focal VC's embeddedness with its syndicate partners and collaboration opportunities with other VC firms outside the immediate access of the syndicate partners. Our study sheds light on research on VC decision making in emerging markets by integrating insights from resource dependence relationships and interorganizational network characteristics.