The economics of markets and platforms

Advances in the study of both markets and platforms contribute to economics. Platforms are typically digital markets, although platforms can designate markets generally. So, the economics of markets and the economics of platforms are one and the same. Platforms show the critical role of intermediaries in endogenous price adjustment and market clearing. The platform model remedies problems with general equilibrium analysis by combining and extending the basic Walrasian and Marshalian market models. The analysis of platforms provides explanations for the bid–ask spread, including market power, search costs, matching costs, adverse selection, and moral hazard. The study of platforms demonstrates the importance of participation and coordination in the formation of markets. The discussion emphasizes that platforms have significant implications for the theory of the firm. The analysis further considers how platforms affect innovation and entrepreneurship.     

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。     

双边市场、不完全信息与二级价格歧视

本文研究了双边市场二级价格歧视问题。本文构建了包括广告商、消费者、垄断平台在内的两阶段博弈模型，研究了在最优与次优情况下平台的定价机制，分析了二级价格歧视对平台利润、社会福利等的影响。研究表明：（1）“顶部无扭曲”或“底部无扭曲”并不严格成立；（2）平台对观众提供的节目质量、广告插播量均可能出现类型逆转的情况；（3）二级价格歧视会增加社会总福利；（4）“会员制”是平台可能的占优定价机制之一。     

地方政府经济竞争下的企业负担*——来自上市公司的经验证据

本文基于分权体制下政企之间的两阶段动态博弈模型以及在此基础上构建的计量模型，将地级市之间经济竞争程度与A股非金融类上市公司数据相匹配，验证了地方政府经济竞争程度与企业实际税负之间的关系。研究结果表明，当地方政府所面临的经济竞争程度越激烈时，其辖区内上市公司的实际税负越低。进一步分析发现，地方政府经济竞争对辖区企业的减税效应存在显著的地区、产业和所有制异质性；分位数回归发现，辖区企业处于不同税负强度时，地方政府经济竞争的减税效应也存在明显差异。在当前减税降费、让利于企的新时代背景下，本文的研究对落实减税降费政策和规范横向竞争中地方政府行为具有启示意义。     

“两网融合”背景下贸易经济专业人才培养模式探讨

本文总结梳理了“两网融合”复合型贸易经济专业人才培养的现状和新的要求,分析了“两网融合”复合型贸易经济专业人才培养的发展方向。从建立教学和科研复合型教学团队模式、信息化平台和实验室“多媒介”培养模式、“两网融合”平台全流程内部审计型人才培养模式、“课程思政+专业技能”结合教学模式等四个方面总结模式创新的基本途径。     

Time preference and international trade

We first consider a closed model, where households' time discount depends on externality in consumption. We can prove that there is a unique steady state, which is a saddle point. Then we extend the model to a two‐country world, and derive the condition on the effects of consumption externality under which there is a unique free trade steady state with saddle‐point stability.     

Unrelated question model with two decks of cards

In this paper, we propose a new unrelated question model for estimating the prevalence of a sensitive characteristic within a population by utilizing two decks of cards. The resultant estimator is then compared to its competitors as to efficiency and as to protection of respondents. A real data application analyzing e-cigarette use among college students is considered.     

Twenty years of Hong Kong and Macao under Chinese rule: being absorbed under ‘one country,two systems’

This paper examines the implementation of ‘one country, two systems’ (1C2S) in the two former Western colonies, Hong Kong and Macao, as a policy innovation in managing inter-governmental relations of a large, diverse country like China. 1C2S embodies internal tensions because the Hong Kong and Chinese governments have multiple and often incompatible goals. After 20 years, these two special administrative regions (SARs) of China are gradually being absorbed.     

基于培训的企业外包服务探索

随着企业经营环境的改变,业务外包已经成为企业集中优势发展核心业务的有效手段,而人力资源外包正成为公司外包业务中的领头羊。培训职能是人力资源管理中最经常被外包的业务之一,但是在我国,培训外包成功的案例却不多。应针对我国企业培训外包服务市场的现况,企业和培训公司应该从改善自身问题入手,共同打造一个成熟的培训外包服务市场。     

互联网背景下市场营销专业课程思政教育的探索与实践——以“消费者心理与行为”课程为例

"课程思政"建设已纳入高校思想政治教育体系,借助专业课教学开展思政教育已成为高校思政教育研究热点,市场营销专业课程思政建设也在全面推进。为探索互联网背景下市场营销专业课的课程思政建设,以"消费者心理与行为"课程为例进行教学实践,提出课程分析、课程思政融入主题的选择、教学方法设计等课程思政建设的关键问题解决方案,增强思政教育的时代感和实效性,以期为市场营销专业全面推进课程思政建设提供有价值的参考。