加权局域世界网络组织技术扩散模型及仿真分析

采用仿真方法模拟技术在网络组织间扩散过程,分析了加权局域世界网络组织的网络结构、演化、结点、局域世界特征对技术扩散率的影响.仿真结果表明:新结点加入和旧结点退出概率越小、网络平均邻结点数越大、结点学习能力越强,技术扩散速率越快;静态网络中,局域世界内的联系比在不同局域世界间的联系更有利于整个网络组织技术扩散,而在动态演化网络中,这种效果主要集中在技术扩散初期;静态网络中,技术扩散初期局域世界内以结点强度偏好性作为连边原则比随机连边原则更有利于技术扩散,但在动态演化网络中,这种效果持续整个技术扩散过程;动态网络中,“结点度偏好性选择连接原则”比“适应度偏好性选择连接原则”更有利于技术扩散.     

动量词"遍"的语义探讨

语法学界对动量词"遍"遍指义的概括存在简单化倾向,通过对"遍"的遍指义进行深入分析,可以将其分为四类:对象性周遍、过程性周遍、伴随性周遍和转指性周遍。本文还对各遍指义对动词的语义选择以及遍指范畴的扩展过程进行了探讨。     

泰戈尔泛神论思想与中国诗歌的现代转型

泛神论是泰戈尔思想的核心,赋予其观照自然的独特方式,故而诗作具有人与自然融溶合一的浪漫情怀。它在中国的传播,激活了中国诗学传统,促使在反传统以后处于近乎失语状态的“五四”人与传统诗学精神遇和,影响了中国诗歌的现代转型。“五四”人还对泰戈尔泛神论思想主动选择和改造,使之带上反传统、个性解放、平等自由的时代印记。     

海外投资中的国有无形资产流失及其法律防范

无形资产不仅是21世纪的入场券,而且还是21世纪国家实力竞争的武器。然而, 海外投资中的国有无形资产正通过国有商标权、国有专利权、评估机制的不完善、境外企业 经营管理不善等渠道大量流失。针对这一现状,文章在分析海外投资中的国有无形资产流失 原因的基础上,主要从思想认识、完善立法、国际法制、管理体制、评估机制和母子公司的 关系等方面提出相应的法律对策。     

基于扎根理论的微博集群行为类型研究

探索预发布公共政策公众在线意见的形成影响因素,对于公共机构制定科学的政策及引导公众发表合理意见具有重要理论价值。

以三个预发布公共政策的在线意见文本为对象,利用扎根理论方法对在线评论进行编码,分析在线意见形成的影响因素,并基于社会认知理论构建预发布公共政策在线意见形成的影响路径及形成机理。

预发布公共政策在线意见表达会受到公众、政策、政府、媒介以及环境五大因素的共同影响;对这五大因素深入分析,进一步提出引导在线意见理性表达的策略建议。

     

低端市场中网络供应商的运作模式研究

以淘宝、天猫和京东等网络销售平台为研究背景,关注高支付意愿的消费者占比较小的低端市场为背景,研究得出: 第一,能力不足的网络供应商选择生产低质量产品,相对于直销模式,供销平台模式中的双重加价,促使网络供应商降低产品的质量水平,以及分销商降低产品的零售价格; 第二,若要提高网络供应商所生产产品的质量水平,相对于发展产品线模式,发展直销模式是较为有效的手段; 若要提高网络供应商的收益,相对于发展直销模式,发展产品线模式是较为有效的手段; 第三,随着把低质量产品误认为是高质量产品的消费者占比的增加,网络供应商的收益减少,高质量产品的质量水平保持不变,而低质量产品的质量水平提高。     

Effect of product and geographic diversification on company performance: Evidence during an economic crisis

Based on a novel sample of Spanish listed companies from nonfinancial sectors, we explore the effect of product and geographic diversification on company performance during an economic downturn. The study develops comprehensive models to understand the interaction effect of both strategies on company performance. We find a U-shaped geographic diversification–performance relationship and no evidence of a positive effect from product diversification, unless combined with high levels of geographic diversification. The results show that companies improved their performance by combining these strategies. The results are robust after controlling for the endogeneity of both types of diversification. Our findings highlight that geographic diversification is an effective and valuable strategy in economic downturns. Furthermore, this study confirms the importance of the interaction between product and geographic diversification to determine the total effect of product or geographic diversification on company performance.     

Multinationals’ political activity for institutional change: Evidence from Spain during the international crisis of 2008

International crises generate uncoupling between multinational enterprises (MNEs) and the institutional environment. In these settings, industry associations of MNEs have an incentive to engage in institutional change by taking a role as institutional entrepreneurs in order to generate change within the existing, unsuitable institutions. However, MNEs can also try to avoid such institutions or try to adapt to them. Because the antecedents and outcomes of these three forms of engagement in institutional change (institutional avoidance, adaptation, and entrepreneurship) have been scarcely studied in Europe, this reflection examines the case of Spain during the international crisis and analyses the coordinated action of MNEs through their associations in seven industries. The discussion of 30 pieces of evidence regarding the engagement in institutional change in Spain suggests a model that proposes relevant antecedents of different forms of engagement and the expected outcomes resulting from the chosen forms, among them: co-evolution and co-involution.     

Mean estimation through proportion estimation

In this work a device which changes the problem of mean estimation into that of proportion estimation is proposed. The device consists of perturbing the observations. The goal of the work is the construction of conservative confidence intervals for means. Three applications are given: (1) proportion estimation in the context of cluster random sampling, (2) differences of proportions of a multinomial population and (3) variance estimation.     

Impulsivity traits and gambling cognitions associated with gambling preferences and clinical status

Impulsivity (and related traits reward/punishment sensitivity and tolerance to delayed rewards) and gambling cognitions have been linked to gambling. However, their independent associations with gambling preferences and clinical status have never been dissociated. The current study applied a data-driven strategy to identify gambling preferences, based on gambling frequency in several modalities. The two resulting factors were used to classify gambling disorder patients (GDPs) and non-problem recreational gamblers (RGs) into Type I (preferring cards, casino games and skill-based bets) and Type II (preferring slot machines, lotteries/pools and bingo). Participants were assessed in impulsivity, delay discounting, reward/punishment sensitivity, gambling-related cognitions, gambling severity, gambling frequency and average amount gambled per episode. GDPs scored higher than RGs in positive and negative urgency, delay discounting, reward sensitivity and intensity of gambling-related cognitions, but less in lack of perseverance. Additionally, Type II gamblers had greater difficulties delaying gratification, whereas Type I gamblers showed higher cognitive distortion and reward sensitivity levels. In practical terms, the finding that some characteristics are equally pervasive in disordered gamblers independently of their preferences (affect-driven impulsivity), whereas others (distorted cognitions, reward sensitivity, delay discounting) are more prominent in one type or the other, provides a basis to establish targets’ priority in therapy.