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计及网络效应的共享经济商业网络布局分析与两步差分聚类-萤火虫算法 被引量:6
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作者 吕通 史乐峰 邹小燕 《中国管理科学》 CSSCI CSCD 北大核心 2019年第6期146-157,共12页
为研究共享经济商业网络的扩展特征和布局方法,本文将影响共享经济商业网络发展的正网络效应和负网络效应考虑在内,构建起共享经济商业网络的成本和收益模型,逐步分析各类网点的利润特征,据此将共享经济商业网点分为六类,并以此为基础... 为研究共享经济商业网络的扩展特征和布局方法,本文将影响共享经济商业网络发展的正网络效应和负网络效应考虑在内,构建起共享经济商业网络的成本和收益模型,逐步分析各类网点的利润特征,据此将共享经济商业网点分为六类,并以此为基础提出共享经济商业网络布局的两步差分聚类萤火虫算法。研究发现:正负网络效应的综合影响使各类网点呈现出不同的利润特征,而不同类型网点布局的先后顺序,将对整个网络的利润产生影响;两步差分聚类萤火虫算法不仅能提高算法前期搜索的效率和精度,同时通过对候选网点的归类,可便捷地识别各候选网点的布局顺序。 展开更多
关键词 共享经济 网络效应 共享网点 差分聚类萤火虫算法
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Does Land Rent between Acquaintances Deviate from the Reference Point?Evidence from Rural China 被引量:7
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作者 Tongwei Qiu Biliang Luo Qinying He 《China & World Economy》 SCIE 2020年第3期29-50,共22页
This paper theoretically and empirically investigates whether acquaintance networks influence the deviation of land rent from the reference point advanced by Hart and Moore.The cofficient of variahce and the range of ... This paper theoretically and empirically investigates whether acquaintance networks influence the deviation of land rent from the reference point advanced by Hart and Moore.The cofficient of variahce and the range of land rent are used to represent the degree of deviation from the reference point.Based on village-level data from the 2015 China Household Finance Survey,the estimated results indicate that land rent between acquaintances is more likely to significantly deviate from the reference point.Although rental transactions are conducted between acquaintances,larger deviations from the reference are also associated with a longer time to close deals.Our analysis using household-level data fiurther supports our findings,indicating that land rental markets embedded in the acquaintance networks of rural China are in a transition period and have characteristics of both relational and market orientation.The policy makers should introduce more outer village lesses or other market ingredients to increase the voluntary marketization of land rentals inside acquaintance networks. 展开更多
关键词 ACQUAINTANCE networks land rent MARKETIZATION reference point
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企业寻租存在餍足点吗? 被引量:2
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作者 徐雷 唐晓华 《云南财经大学学报》 CSSCI 北大核心 2015年第5期19-29,共11页
采用世界银行与国家统计局于2005年对中国企业联合进行的调查数据,对企业绩效与寻租花费间的关系进行实证考查。与已有文献的线性回归不同,研究以企业寻租花费餍足点存在为前提假设,以二次项回归为基础,同时,运用普通最小二乘法和三阶... 采用世界银行与国家统计局于2005年对中国企业联合进行的调查数据,对企业绩效与寻租花费间的关系进行实证考查。与已有文献的线性回归不同,研究以企业寻租花费餍足点存在为前提假设,以二次项回归为基础,同时,运用普通最小二乘法和三阶段最小二乘法估计了寻租对绩效的影响以及寻租花费的决定因素。研究发现,企业绩效与寻租花费间具有显著的倒U型曲线关系,这证明了餍足点在企业寻租花费中的现实存在。同时,企业的绩效水平对寻租花费具有正向影响,而企业所拥有的政治力量对寻租花费具有负向影响,这证实了现有文献中关于企业支付能力和拒绝力量与寻租水平关系方面的理论假说。 展开更多
关键词 寻租 餍足点 倒U曲线
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Rent-Seeking and Firm Performance: From the Perspective of the EightPoint Regulation and Government Subsidies
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作者 曹伟 赵璨 杨德明 《China Economist》 2017年第5期72-83,共12页
With the implementation of the CPC's eight-point regulation as a natural experiment platform, this paper seeks to unravel the causality between rent-seeking and firm performance for SOEs and private firms respectivel... With the implementation of the CPC's eight-point regulation as a natural experiment platform, this paper seeks to unravel the causality between rent-seeking and firm performance for SOEs and private firms respectively. Our empirical research has found that after the release of the "eight-point regulation ", investors responded negatively to private frms and positively to SOEs. Such market response is more significant for firms with a high degree of rent-seeking. Further research has found that rent-seeking helps both SOEs and private firms receive more subsidies from the government. While government subsidy from rent-seeking is conducive to the performance of private firms, it is not the case for SOEs. This implies that rent-seeking activities serve as a "lubricant'for private firms but have a "stumbling block" effect for SOEs. 展开更多
关键词 rent-SEEKING corporate profitability eight-point regulation governmentsubsidy
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