北大经院工作坊第314场
多重网络分析:基于合作的视角
国际经济学与实证产业组织工作坊
主讲人:
程琛(约翰-霍普金斯大学助理教授)
主持人:
(北大经院)杨汝岱
参与老师:
(北大经院)田巍、刘政文、莫家伟
(北大新结构)王歆、徐铭梽
时间:
2021年6月29日(周二)10:00-11:30
地点:
经济学院305会议室
主讲人简介:
程琛,美国约翰-霍普金斯大学(Johns Hopkins University)助理教授。美国西北大学凯洛格商学院(Northwestern University, Kellogg School of Management)经济学博士。主要研究领域为组织经济学、政治经济学、社会网络。论文发表于AEJ:Micro、RAND Journal of Economics等国际顶级期刊,工作论文在Theoretical Economics等顶尖理论期刊获邀再审。为TE, APSR, IER, CEJ, JLEO, JEBO, Rand, JTP等期刊的匿名审稿人。
报告摘要:
People are embedded in multiple social relations. These relations are not isolated from each other. Do different networks overlap and why? We focus on the following question: When an agent has a new relation to add, would they choose to multiplex, i.e., to link with a friend or a stranger? The key tradeoff that we emphasize is the one between multiplexity and community enforcement. Multiplexity enhances cooperation because various relations serve as social collateral for each other, while linking to a stranger can utilize community enforcement, whose power relies more on the rest of the network structure. We find the following: (1) There is a strong tendency to multiplex, and the “multiplexity trap” can occur; that is, agents may keep adding relationships with friends, even when it is more efficient to link with a stranger. (2) Agents tend to multiplex when the existing network (a) has a low degree dispersion (i.e., all agents have similar numbers of friends) or (b) is positively assortative (agents are linked with those with a similar number of friends). We also find that agents tend to multiplex when the new relationship is more important. Using the Indian Village Survey data, we provide supportive evidence for our theoretical predictions.
北大经院工作坊第315场
A Theory of Decentralized Insurance
风险、保险与不确定性经济学工作坊
主讲人:
冯润桓(美国伊利诺伊大学香槟分校终身教授)
主持人:
(北大经院)贾若
(清华经管)刘晨源
(人大财金)陈泽
参与老师:
(北大经院)郑伟
(清华经管)陈秉正
(人大财金)魏丽
时间:
2021年6月29日(周二)10:00-11:30
会议形式:
腾讯会议,ID: 410 333 125
主讲人简介:
冯润桓先生是美国伊利诺伊大学香槟分校终身教授,State Farm保险集团讲席学者,精算专业主任。北美精算协会高级精算师(FSA)、注册企业风险分析师(CERA)。现担任北美精算师协会教育与科研组委员会副主席。主要研究领域为破产理论、投连险、养老规划、保险科技创新。先后为德国慕尼黑科技大学客座教授,斯坦福大学访问教授。
摘要:
Insurance is no exception to the decentralization movement in finance industry brought by Blockchain technology. This paper develops a framework of decentralized insurance that jointly incorporates the forms of centralized insurance-underwriting and decentralized peer-risk-sharing. Existing insurance models, including the conventional insurance and new forms of decentralized insurance arising from insurance industry can be placed on a spectrum of decentralization. We study the equilibrium under the decentralized insurance model for participants of heterogeneous risk types with the existence of risk-neutral insurer under both asymmetric and symmetric information settings. In general, the equilibrium can be reached and we characterize the optimal degree of decentralization that varies across different risk types. We further explore the market equilibrium with consideration of risk-averse insurer.
北大经济史学名家系列讲座第148讲
金融扎根、与人民一体和国家能力源泉——北海银行低利贷款的启示
庆祝中国共产党建党一百周年专题讲座
时间:
2021年6月30日(周三)10:00-12:00
形式:
线下:经济学院302会议室
线上:腾讯会议,会议号:992 704 879
主讲人:
魏建(山东大学中泰证券金融研究院特聘教授)
主讲人简介:
魏建,《山东大学学报(哲学社会科学版)》主编。主要研究领域为法经济学,主要学术成果集中法经济学基础理论研究、中国法治实践经济分析等领域,先后在《中国社会科学》《中国工业经济》《经济学(季刊)》《管理世界》发表论文百余篇,出版专著编著近10部,主持国家及省级科研项目10余项。获省部级奖励五项。
主持人:
周建波(北京大学经济学院经济史学系 系主任、教授)
评论人:
何平(中国人民大学财政金融学院教授)
胡伟(管理世界杂志社副研究员)
潘晓霞(《近代史研究》杂志社副编审)
赵一泠(北京大学经济学院经济史学系助理教授)
主办方:
北京大学经济学院经济史学系
北京大学社会经济史研究所
北京大学外国经济学说研究中心