相关瑞利衰落信道下空时分组编码性能分析

目前对空时编码的研究大都是基于信道是独立的假设下进行的,然而在实际系统中独立性假设是不成立的。基于此,研究了信道的相关性对空时编码性能的影响。计算机仿真结果表明：由于衰落信道的相关性,系统性能有所下降,且系统性能关于相关系数存在“地板效应”,即相关系数小于某一数值时,对系统性能的影响较小;当大于此值时,系统性能就会急剧下降。     

Beyond internal capital markets: The in-house transmission of adverse sales shocks and the collateral channel

We study how shocks to some business segments affect investment in a firm's non-shock segments. We find that subsequent investment in the non-shock segments is significantly lower compared to segments of firms that do not experience shocks. Surprisingly, lower availability of internal funds does not account for the lower investment. We find that segment shocks propagate within the firm by decreasing the value of collateral assets and reducing the availability of external finance. Our results support the operation of an external finance collateral channel ([Kiyotaki, N., Moore, J., 1997. Credit cycles. Journal of Political Economy 105, 211–248.]) previously discussed in the literature.     

Perceptual difference of dependence and its impact on conflict in marketing channels in China: An empirical study with two-sided data

Although many firms have adopted the relational exchange or relationship marketing philosophy for developing long-term inter-firm relationships in marketing channels, the issues pertaining to channel conflict still deserve further investigation. The purpose of this paper is to examine the possible impact of perceptual difference of dependence between members in channel dyads on perceived channel conflict. By analyzing paired data collected from both sides of supplier-retailer dyads in China, we test two hypotheses about perceptual difference of dependence and its impact on conflict. We found that there was considerable perceptual difference of dependence between both sides of the dyads, and that the perceptual difference of dependence asymmetry between the two was positively associated with channel conflict perceived by the supplier side. Both researchers and practitioners should be aware of such differences when confronted with channel conflict issues, especially in international channel settings.     

Managing International Distribution Channel Partners: A Cross-Cultural Approach

Although the topic of conflict has been extensively studied in the distribution channels literature from a domestic perspective, there is relatively little published research examining the construct within the international distribution channels context. This is of particular concern because cross-national channel partnerships are on the rise, and divergent cultures may engender heightened conflict, which has a deleterious effect on channel performance. This article explores the extent to which different channel leadership styles, predicated on Hofstede's dimensions of national culture, can be effective strategies to manage conflict in international distribution channels. Specifically, the article examines whether the relationship between leadership style and conflict in international distribution channels is moderated by national culture. Additionally, the impact of manifest conflict on international channel partner performance is investigated. A conceptual model and research propositions are developed. The use of leadership styles to manage disagreements among international channel partners is argued to be culturally specific. International channel management implications and directions for future research are suggested.     

Relinking Cross‐functional Collaboration,Knowledge Integration Mechanisms,and Product Innovation Performance: a Moderated Mediation Model

Previous research shows that knowledge integration mechanisms (KIMs) mediate the cross‐functional collaboration‐product innovation performance relationship; however, this mediating effect seems to be rather weak. This study, in contrast, develops a moderated mediation (MOME) model to argue that such a mediating effect is moderated by product innovativeness. A sample comprised of 106 manufacturing firms is utilized in the analyses. A moderated‐mediation approach shows that the mediating effect of KIMs in the linkage between cross‐functional collaboration and product innovation performance varies by different perspectives of product innovativeness. From an industry (macro‐level) perspective, product innovativeness positively moderates the mediating effect of KIMs on product innovation performance; in contrast, such a moderating effect is not significant under a firm (micro‐level) perspective. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.     

Estimating Transition Probabilities from a Time Series of Independent Cross Sections

This paper considers the implementation of a nonstationary, heterogeneous Markov model for the analysis of a binary dependent variable in a time series of independent cross sections. The model, previously considered by M offitt (1993), offers the opportunity to estimate entry and exit transition probabilities and to examine the effects of time-constant and time-varying covariates on the hazards. We show how ML estimates of the parameters can be obtained by Fisher's method-of-scoring and how to estimate both fixed and time-varying covariate effects. The model is exemplified with an analysis of the labor force participation decision of Dutch women using data from the Socio-economic Panel (SEP) study conducted in the Netherlands between 1986 and 1995. We treat the panel data as independent cross sections and compare the employment status sequences predicted by the model with the observed sequences in the panel. Some open problems concerning the application of the model are also discussed.     

谈电信企业的渠道代理商管理与激励

就电信企业渠道代理商的选择标准、日常管理以及考核与激励的方法。     

Financing constraints and US cross‐listing

This study investigates whether relaxation of firms' financial constraints is an important outcome of the US cross‐listing mechanism. We use the association between investment spending and cash flow to test for the presence and importance of firms' financing constraints. Consistent with the bonding hypothesis, the results suggest that US exchange and private placement cross‐listings significantly alleviate firms' financing constraints. In addition, the financial benefits associated with exchange listings are larger than those associated with private listings, while on the other hand, over‐the‐counter programs do not improve capital allocation. The study also shows that US exchange cross‐listing benefits have not been eroded by the enactment of the Sarbanes‐Oxley (SOX) Act in 2002. Copyright © 2014 ASAC. Published by John Wiley & Sons, Ltd.     

跨境电子商务存在问题与发展对策

跨境电子商务具有全球性、无形性、匿名性、即时性、无纸化和快速演进等特征,已成为我国国际贸易的新方式和新手段。目前,跨境电子商务随着政府扶持利好频出,市场增长前景可期,行业助力发展迅速,拉内需促就业效果明显,市场竞争日趋激烈。面对发展跨境电子商务面临的消费者不信任、服务体系不完善以及语言、地理环境因素等问题,发展跨境电子商务的措施是:认清消费者信任的网上购物者和付款者的最佳组合商业模式;熟悉语言文化环境,整合资源链;熟知通转关、商检、保险、物流配送、金融结算流程,推动跨境电商跨领域跨经营环节合作。     

制造商角度下营销渠道结构选择的博弈分析

营销渠道结构的选择是制造商在产品营销过程中的重要环节。随着Internet及电子商务的发展,营销渠道在传统结构的基础上发生了显著的变化。本文从制造商的角度出发,建立了渠道结构选择中制造商与中间商的博弈模型,得出影响制造商渠道结构选择的关键要素,并在此基础上提出制造商在渠道选择中应采取的相应策略。