排序方式: 共有20条查询结果,搜索用时 125 毫秒
11.
This study explores how seller reputations affect auction prices and concludes that earlier findings may be biased due to the misspecification of seller reputation. This paper contributes to the literature by offering significant empirical evidence using Taiwanese internet auction data. Our study reveals that the influence of seller reputations on auction prices is significant, irrespective of the assumptions of linear or non‐linear relationships with price. However, failure to consider the non‐linear setting of seller reputation leads us to underestimate the impact of reputation when the seller's reputation score is low, but overestimates it when the seller's reputation becomes high. Using quantile regression, this study finds evidence of considerable differences in their impact on auction prices that are dependent on the distribution of price levels. 相似文献
12.
13.
李建兴 《四川商业高等专科学校学报》2006,14(2):23-27
农民市民化是统筹城乡发展的重要路径选择。然而在农民的市民化过程中,他们除了受到外在的体制环境的影响以外,还同样地受到自身主体性因素的制约。充分了解和把握这些影响农民市民化的主体性因素,采取积极的应对措施,并努力清除这些主体性障碍因素,有利于推进我国的农民市民化进程。 相似文献
14.
B737NG飞机P5-13电源面板存在两种构型,"CAB/UTIL"和"IFE/PASS SEAT"属于新构型中的两个电门,本文在结合手册与实际现象的基础上,分析了这两个电门的功用,避免在将来的排故过程中走弯路。 相似文献
15.
在确定了渔业资源生产潜力的内涵和主要影响因素的前提下,本文适当选取6个主要影响渔业资源生产潜力的要素指标,运用统计分析工具,采用要素指标分析法对湖北省渔业资源生产潜力进行了相应的分析预测和评估说明.进而对湖北省稻田养鱼和水生经济植物的生产潜力做了相应的分析. 相似文献
16.
17.
18.
关于Oracle数据库应用中的安全管理策略 总被引:1,自引:0,他引:1
随着计算机技术的快速发展,企业和公司都建立了企业网,系统的保密性与安全性就显得极为重要。本文主要针对Oracle数据库系统、数据管理、用户管理等方面,讨论基于0racle的数据库的安全策略,以便对本企业整个MIS(信息管理系统)进行更安全、更可靠地管理。 相似文献
19.
在当前经济与社会变革进一步深入的背景下,专业服务企业的发展对国家经济结构转型具有重要意义。为了促进专业服务企业的发展,使其在国家经济发展中扮演更重要的角色,专业服务企业协同的创新是必要的,使专业服务企业在促进产业结构的调整与升级中发挥积极作用。 相似文献
20.
Paul A. Samuelson 《European Journal of the History of Economic Thought》2013,20(2):243-271
Abstract Proofs are given that only singularly can real 1750 – 2007 competitive price ratios be ‘natural', in the sense of being invariant under changes in demand tastes. Proofs are given that both 1750 – 1870 discrete technologies or 1890 – 2007 continuum technologies, with convexity properties sufficient for arbitrage-proof supply-demand equilibria, will be ‘intertemporally Pareto optimal', immune to leaving any deadweight (inefficient) losses on the table. Sraffa (1960), ignoring the vast post-1945 linear and non-linear programming mathematical literature of Danzig, Kuhn-Tucker-Bellman, von Neumann, Ramsey literature does not quite arrive at attainable distribution solutions. Where it tolerates increasing or decreasing returns to scale, there can be no competitive equilibria. When its matrix equations do obey first-degree-homogeneous functions, the book's stress on Basics or non-Basics is an irrelevancy leading to bizarre novel interpretations of Ricardo. Old age overtakes us all. Alas, Sraffs's proposed critique of twentieth century political economy we will never be able to know. 相似文献