宏观经济理论中的金融因素:若干认识误区

本文以主流宏观经济学的若干认识误区为切入点,对宏观经济理论中的金融因素及相关问题进行了初步的理论反思。这一反思主要围绕以下六个基本命题展开:一是金融因素在宏观经济中的影响被严重低估,二是主流货币政策框架的致命缺陷源于其政策视野的短期性,三是货币与信用的创造机制存在着本质差别,四是财政机制与信用机制并非独立,五是金融创新指向信用创造并改变了经济金融环境,六是泡沫问题金融化的本质在于杠杆扩大化。这些命题的共同启示是:宏观经济理论必须在纳入内生性金融因素的基础上予以系统重建。     

贸易开放对中国区域增长的空间效应研究:1987-2009

本文在新增长理论和空间经济学框架下,构建贸易开放与区域增长的空间面板数据模型,运用空间计量方法分析1987—2009年间中国省际贸易开放对经济增长的空间效应。研究发现,中国省域经济和产业经济层面的增长均存在空间相关性;控制空间相关性后,贸易开放对省域经济的增长效应为正,伴有空间收敛与发散双向效应,并因地区发展水平、基础设施和人力资本差异而存在空间异质性;产业层面的空间效应体现了产业特征,与整体经济并不完全相同。     

低信噪比高动态条件下基于FFT的二维平移累加PN码捕获算法

针对低信噪比高动态条件下直接序列扩频（DSSS）系统中PN码捕获的问题,提出了基于FFT 二维平移累 加的PN码捕获算法。首先对现有的PN码捕获技术进行了分析,然后研究了时变的载波频偏与 码频频偏对PN码捕获的影响,在此基础上,提出了基于FFT二维平移累加的PN码捕获算法。 算法的基本思想是对相关器输出的相关值在载波频偏不确定度与码相位不确定度同时进行平 移,从而消除相关峰“漂移”现象,增大非相干累加的有效性。给出了采用此算法的捕获系 统结构图,并对关键参数进行了分析。最后,通过仿真表明了该算法对捕获系统有6 dB的改 善。     

远程无线控制系统的设计与实现

由于保密的要求以及铺设专网耗资巨大等问题,测量船对远程的 标校设备无法进行有效的控制。通过选用无线网桥技术设计了一套无线控制系统,并开发了 网络控制模块以及相应的软件,进而实现了测量船对远端设备的有效控制。测试表明,系统设 计合理,控制便捷,具有可靠性、安全性和扩展性高等优点,完全适用于测量船远程控制。     

Frontline service employees’ customer-related social stressors, emotional exhaustion, and service recovery performance: customer orientation as a moderator

This study investigates the structural relationships among customer-related social stressors (disproportionate customer expectation, ambiguous customer expectation, disliked customers, and customers?? verbal aggression), emotional exhaustion, and service recovery performance, with customer orientation (CO) serving as a moderator between customer-related social stressors and emotional exhaustion as well as emotional exhaustion and service recovery performance. The study uses data collected from a survey of 1,014 frontline service employees in Korea??s tourism service sectors. The results indicate that customer-related social stressors positively influence emotional exhaustion; emotional exhaustion negatively influences service recovery performance; and CO acts as a moderator. CO moderates both the effects of customer-related social stressors on emotional exhaustion and those of emotional exhaustion on service recovery performance, by weakening the effects for higher CO employees. This study contributes to both theory and practice by combining the four constructs of customer-related social stressors, emotional exhaustion, service recovery performance, and CO in addition to examining their relationships while focusing on customer-related factors.     

Competition in the Korean Internet Portal Market: Network Effects, Profit, and Market Efficiency

Internet portals serve as platforms for coordinating advertisements, content, and user markets. We model portal structure with South Korean market data to explain network effects and other competition factors. We also analyze network effects on profit and market efficiency. The results indicate a negative network effect from banner advertisements in the user market, which is countered by a network effect from content provision. In the advertising market, the network effect from user demand is positively identified, which explains profit making through increased user visits. Furthermore, we show that network effects due to market concentration result in increases in consumer surplus.     

Social comparison among competing firms

Extending social comparison theory to the context of interfirm competition, we investigate whether and under what conditions firms may benefit by deviating from consumers' views concerning firm comparisons. Based on all of the possible dyadic competitive comparisons among the 26 automakers in the United States, we found that: (1) a focal firm enjoys a greater increase in sales than the target firm when it compares itself with a more reputable target firm, even though consumers do not perceive the focal firm to be comparable to the more reputable firm; and (2) a focal firm enjoys a greater increase in sales than the target firm when it avoids comparison with a less reputable target firm, even though consumers compare the focal firm with the less reputable firm. Copyright © 2011 John Wiley & Sons, Ltd.     

基于城市流要素的区域城市内外部功能联系研究——以浙江省台州市域为例

城市空间结构是城市功能组织的空间表现形式,城市流要素空间流动强度和方向综合反映了城市功能联系特征,研究台州行政、经济、社会以及其他联系的强度和方向,运用集中度指数、首位度以及前三位联系方向分析方法,明确台州市域内部空间功能联系特征表现出差异化特征;对外联系表现出长三角密切联系区域;判断空间发展处在向心集聚阶段,预测台州空间结构未来可能形成网络化联系格局。     

Empirical Research on Technology Innovation Efficiency of Equipment Manufacturing Industryl Based on Improved DEA Model

基于2007-2009年的统计面板数据,运用DEA方法对我国装备制造业技术创新效率进行评价,并运用改进的DEA评价模型,对我国装备制造业7大类行业的技术创新效率进行实证研究,研究结果表明,我国装备制造业各行业技术创新效率普遍不高,对创新资源的利用不充分.改进的DEA方法不仅为较少决策单元的评价提供了新的途径,也为提高装备制造业各大类行业技术创新能力提供参考.