携号转网政策对电信运营商合谋的影响研究

电信业是一个典型的寡头垄断产业,在运营过程中,电信运营商容易达成合谋,同时电信市场较高的转移成本为电信运营商合谋提供一定的基础。本文通过构建博弈模型,研究携号转网政策对电信运营商合谋的影响效应。研究得出：实施携号转网政策,通过有效降低消费者的转移成本,使得电信运营商坚持合谋的临界贴现因子提高,电信运营商将更难坚持合谋。该政策的实施效果随转移成本降低率的提高而增强,随电信运营商产品差异性的不断扩大而减弱。因此,携号转网政策的实施将在一定程度上降低电信运营商的合谋行为。     

基于普通摄像头的人数检测技术的探讨

本文利用普通摄像头在人脸检测的基础上,对视频或图像中出现的人数进行统计,为了提高统计的准确性,本文引入背景差的方法,从而大大改善了人数统计的精度,试验证明了方法的有效性。     

本科生导师制生师比确定模型分析与应用

本文在系统分析影响本科生导师生师比的相关因素的基础上,通过确定本科生导师生师比相关影响因素权数,建立了本科生导师制生师比确定模型,并对模型的典型值进行了分析,说明了模型的有效性,并给出了某学校生师比分析。本文对于本科生导师生师比确定提供了理论基础,具有一定的理论和现实意义。     

基于模糊组合权的模糊TOPSIS方法在供应商选择中的应用研究

供应商的选择在供应链管理中是很重要环节,供应商选择的成功与否将直接影响到整个供应链的竞争优势,故有必要对供应商选择进行深入研究。本文将已有的模糊组合权方法和模糊TOPSIS方法相结合,提出一种基于模糊组合权的模糊TOPSIS方法,并将其应用于供应商的选择研究中。文章首先总结已有的相关研究结果,给出供应商评价的准则,接着介绍三角模糊数的相关理论,推出模糊组合权及模糊TOPSIS的算法步骤,最后通过一个算例验证方法的可行性。     

Data sources for the credit-card augmented Divisia monetary aggregates

In 2013, the Center for Financial Stability (CFS) initiated its Divisia monetary aggregates database, maintained within the CFS program called Advances in Monetary and Financial Measurement (AMFM), based on Barnett (1980, 2012). The CFS will soon be making available Divisia monetary aggregates extended to include the transactions services of credit cards. The extended aggregates will be called the augmented Divisia monetary aggregates and will be available to the public in monthly releases. The new aggregates will also be available to Bloomberg terminal users. The theory on which the new aggregates are based is provided in Barnett and Su (2014).¹ In this paper, we provide detailed information on the data sources used in producing the new augmented Divisia monetary aggregates.     

P2P 网络借贷平台综合竞争力评价——基于直觉三角模糊数的多属性决策 TOPSIS

P2P 网络借贷是互联网金融创新模式之一,是我国普惠金融的重要组成部分,如何采取 有效方法对 P2P 网络借贷平台综合竞争力进行评价,是引导互联网金融市场健康发展、提高网贷 效率的当务之急。研究以我国 P2P 行业发展特征为基础,结合企业价值链模型,从基本活动与支 持性活动两个维度,选出平台规模、市场情况、企业成长性、财务状况、技术保障、风险控制六 个二级指标,建立了 P2P 网络借贷平台综合竞争力评价指标体系。利用基于三角直觉模糊数的多 属性决策 TOPSIS 评价方法,从实证的角度对民营系、银行系、上市系、国资系、风投系五个类 别的 P2P 网络借贷平台综合竞争力进行优劣排序,最后对平台如何提升自身竞争力提出相关建议。     

基于二元区间数理论的企业知识吸收能力评价

构建了企业知识吸收能力的评价指标体系,提出了基于二元区间数理论的评价模型。首先建立多指标决策矩阵,并对其进行标准化处理;其次利用数学中的余弦公式来确定企业每个指标与理想指标之间的余弦值,建立余弦矩阵;然后借助改进的层次分析法确定评价指标的权重系数区间;最后,根据所提的评价指标体系和评价模型,对四个企业的吸收能力进行了评价,从而验证了该方法的科学性和实用性。     

风景区规划中有关市场问题的计算方法探讨

本文以国内某风景区为例,对其淡季、旺季、平季的计算、游客人数与经济收入预测等有关问题的定量计算方法作了探讨。     

Dimensions of International Negotiations: Structures, Processes, and Outcomes

Cases of international negotiation are compared in terms of their similarities and dissimilarities. Using both primary and secondary source materials, each case is coded in terms of aspects of the issues, structure, situation, processes, and outcomes of negotiation. One analysis consisted of 23 cases in which Austrian delegations participated. Multidimensional scaling results indicated that a key dimension was the distinction between small bilateral talks and larger multilateral negotiations. Bilateral talks were more likely to be characterized by treaties, low turnover, stage-like processes, and no deadlines. Correlational findings also showed that outside influences had stronger impacts on outcomes than such internal factors as bureaucratic support. A second scaling analysis, based on cases published by the Johns Hopkins' Foreign Policy Institute, produced two dimensions, number and complexity of the issues. The groupings of the cases also corresponded to Ikle's distinctions among types of negotiation. Correlational findings indicated relationships among aspects of the negotiating situation and outcomes. The article concludes with a comparison of the two analyses.     

Measures of economies with an arbitrarily large number of equilibria

Balasko (1978) shows that in a compact subset of the space of economies, not too many economies can have too many equilibria. We extend Balasko’s result to the whole set of economies for a suitable measure. We show that the measure of economies with a large number of equilibria approaches zero as this number tends to infinity. An analogous result in the infinite‐dimensional setting is also established.