一种改进的电力线通信系统脉冲噪声抑制方法

为了抑制脉冲噪声对电力线正交频分复用（OFDM）通信系统的影响,最常用的方法之一是在接收端OFDM解调器之前前置一个置零非线性单元,即传统置零法。然而,由于引入了非线性失真,其性能并不理想。针对传统置零法引起的非线性失真问题,提出了一种基于迭代消除非线性失真的改进置零法。首先,对接收到的时域OFDM信号进行脉冲噪声检测和置零处理;然后,在频域利用已检测的符号来重构时域置零处理引入的非线性失真,并通过迭代提高重构的准确性;最后,从频域接收信号中减去重构的非线性失真。仿真结果表明,所提改进算法与传统置零法相比,有非常大的性能提升,增强了电力线OFDM通信系统对脉冲噪声的抵抗能力。     

Business marketing in France: can the case be made for “French exceptionalism” or is it just a slight variation?

Purpose: The aim of this article is to elucidate the state of B-to-B marketing research in France by conducting a review of theoretical and empirical studies in this field that have been published over the last three decades.

Methodology/approach: Authors identified relevant literature sources, and proceeded with classifying the publications according to their main theme of study (as determined by reviewing the topic, the abstract, and/or keywords). To extract the main articles, authors explored multiple electronic databases, including Source Premier (EBSCO), Elsevier Science Direct, Google Scholar, and Cairn.info. This methodology has allowed comparisons both in time and in relation to similar works done in other countries. The analysis focuses on the main contributions of French literature in the B-to-B domain and establishes that progress has been made in understanding the issues of B-to-B marketing in France, as well as in the development of the theory in this field.

Findings: The review shows that B-to-B marketing research in France, although under-represented in relation to its B-to-C counterparts, is gradually emerging from the shadows and covers important topics that are increasingly diverse and varied. By identifying the main topics studied by French B-to-B marketing researchers, this work advances this academic discipline while also providing valuable information.

Originality/value: This study is the first attempt to conduct an in-depth examination of the state of B-to-B marketing research in France. Findings yielded by this literature review would be beneficial to both B-to-B marketing researchers and practitioners and promotes this research field.     

Exploring the link between household debt and income inequality: an asymmetric approach

We investigate the relationship between household debt and income inequality in the USA, allowing for asymmetry, using data over the period 1913–2008. We find evidence of an asymmetric cointegration between household debt and inequality for different regimes. Our results indicate household debt only responds to positive changes in income inequality, while there is no evidence of falling inequality significantly affecting household debt. The presence of this asymmetry provides further empirical insights into the emerging literature on household debt and inequality.     

地区知识产权形象形成机理研究——基于三螺旋模型理论视角

地区知识产权形象作为一个地区知识产权事业发展的立体缩影、综合评价和总体印象,涉及地区政治经济、科学技术和社会文化生活的方方面面,它通过地区各类主体与知识产权有关的种种行为来塑造,来影射。其中,地区政府、地区主导企业和地区社会公众,在地区知识产权的创造、保护、管理和运用的过程中,建立起一种相互联系、相互影响、相互作用的多重互反关系。这种多要素、非线性、动态博弈关系三螺旋关联作用模式,宜以三螺旋模型理论进行分析：当三者之间两两良性互动,三方交互重叠,构筑起积极、健康的地区知识产权形象;反之,任何一方的行为错位与缺失,并交互传导,引致连锁反应,久而久之,会形成一种消极、负面的地区知识产权形象。加强地区知识产权形象形成机理研究,既有利于我们积极建设、正确评价某一地区的知识产权形象,也有利于我们及时修正负面消极的地区知识产权形象。     

我国服务贸易与经济增长关系的研究——基于1985-2007年时序数据的实证分析

文章基于1985-2007年我国服务贸易进口、出口与GDP样本数据,对三者之间的关系,进行协整分析、因果关系检验和建立误差修正模型,对我国服务贸易与经济增长的关系作出实证分析。结果表明:三者之间存在唯一的长期稳定的动态协整关系;但三者之间均不存在双向的因果关系,其中,服务贸易出口是拉动GDP增长的原因,因此我们应大力鼓励服务贸易的出口。     

Dysfunctional executive behavior: What can organizations do?

Much has been made of dysfunctional executive behavior in recent years. As such, the purpose of this article is to assist organizations in the design of executive work. To better construct a work environment that diminishes self-serving and unethical behavior, we propose that organizations structure an executive's work around three factors: the accountability environment, managerial discretion, and relationship composition. These factors are used to describe how organizations can better design executives’ work so as to promote more desirable executive behavior. We describe how these factors should be calibrated, as well as how they affect each other.     

Cross-cultural study of channel relationship factors — Antecedents of satisfaction in a retail setting: A commentary essay

Channel relationships within and across diverse markets have been investigated for quite some time. Yet findings from these studies over the last forty years or so have been far from conclusive. Channel researchers Runyan, Sternquist, and Chung (forthcoming) investigate interrelationships between the behavioral constructs of role performance, dependence, conflict, satisfaction, and influence strategy in the U.S. and Japanese context. Reading this paper leads credence to the adage, “The more things change, the more they stay the same.” Indeed, a review of representative comparative channels research literature from the 1980s and post-2000 brings to surface striking similarities in terms of shaky conceptual frameworks, less than robust construct measures, and insufficient caveats in explaining and applying research findings. For channels research to gain relevance in today's globalized marketplace, greater sophistication is necessary in formulating and implementing comparative studies. An overarching framework is necessary to explain, if not incorporate, similarities and differences in channel interactions around the globe.     

Reseller adoption of manufacturers' e-business tools: The impact of social enforcement, technology-relationship fit and the mediating role of reseller benefits

Manufacturer-reseller relationships are increasingly becoming technology-infused as distribution managers are employing e-business tools to streamline existing channels. This research examines the role of social enforcement, relationship-technology fit and the perceived reseller benefits in reseller adoption of manufacturers' e-business tools. The results of the empirical test involving a sample of 224 resellers suggest that social enforcement and technology-relationship factors impact reseller e-business adoption, while reseller benefits play a mediating role. Implications of these findings for researchers and managers are discussed.     

Nonlinear Mean Reversion across National Stock Markets: Evidence from Emerging Asian Markets

This paper seeks empirical evidence of nonlinear mean-reversion in relative national stock price indices for Emerging Asian countries. It is well known that conventional linear unit root tests suffer from low power against the stationary nonlinear alternative. Implementing the nonlinear unit root tests proposed by Kapetanios et al. (2003 Kapetanios, G., Shin, Y. and Snell, A. 2003. Testing for a unit root in the nonlinear STAR framework. Journal of Econometrics, 112: 359–379. [Crossref], [Web of Science ®] , [Google Scholar]) and Cerrato et al. (2009 Cerrato, M., de Peretti, C., Larsson, R. and Sarantis, N. 2009. “A nonlinear panel unit root test under cross section dependence”. Working Papers 28, Department of Economics, University of Glasgow [Google Scholar]) for the relative stock prices of Emerging Asian markets, we find strong evidence of nonlinear mean reversion, whereas linear tests fail to reject the unit root null for most cases. We also report some evidence that stock markets in China and Taiwan are highly localized.     

我国上市公司信息披露质量对其财务绩效影响的实证研究——基于非线性和非对称性的视角

本文以2006-2010年的深市A股上市公司为样本,以每股收益为上市公司财务绩效的替代变量,以深交所对上市公司信息披露考评结果作为信息披露质量的替代变量,研究了我国上市公司信息披露质量对其财务绩效的影响。结果表明：上市公司信息披露质量对其财务绩效的影响是非线性的,具体表现为正u型;上市公司信息披露质量的变动对其财务绩效的影响是非对称的。最后,本文根据回归分析结果提出了相应的政策建议。