韩国电信(KT)移动WiMAX(WiBro)服务介绍

移动WiMAX与WiBro之间的关系WiBro源自韩国。早在2004年7月韩国信息通讯部(MIC)正式公布移动WiMAX(WiBro)的服务要求之前,韩国电信技术协会(TTA)内部就开展了一项本地     

Utilization of business technologies: Managing relationship-based benefits for buying and supplying firms

There is increasing evidence to suggest that organizations often fail to fully capitalize on the purchased business technologies due to their failure to utilize the new procurement throughout their corporate system. To this end, this study sets out to identify the factors that play a tangible role in facilitating the utilization of procured business technologies. In this context, we not only examine the direct effects of technology and organizational culture on utilization, but also assess the moderating effects of user environments and supplier service orientation on these direct relationships. More importantly, we focus on the impact of utilization in creating the relationship-based benefits for both the technology user and supplier. Using data on purchase and use of customer relationship management (CRM) system, we empirically validate that the user firm's corporate culture, perceived technology attributes, environmental turbulence, and the supplying firm's service orientation are critical in increasing the utilization level of business technologies, which in turn helps to create/sustain relationship-based advantages for both parties.     

How does sales force automation influence relationship quality and performance? The mediating roles of learning and selling behaviors

Sales force automation (SFA) technologies are increasingly used to support customer relationship management strategies. However, previous studies have reported mixed results about the performances of SFA technologies. Therefore, this study seeks to further examine the impact of SFA usage on both customer relationship quality and sales performance. Additionally, the mediating roles of learning and adaptive selling behaviors on the outcomes of SFA usage are investigated. The results highlight the mediating role of salesperson learning and adaptive selling behaviors in the SFA usage and sales performance relationship. Especially noteworthy is the impact of learning through adaptive selling on those outcome variables. Implications for SFA research and practice that may further improve our understanding of this increasingly relevant topic are also offered.     

The Business Case for Gender Diversity: Examining the Role of Human Resource Management Investments

Integrating opposing theoretical perspectives from the past literature, the authors hypothesize and test a U‐shaped curvilinear relationship between gender diversity and workforce productivity. They further propose that the curvilinear effects vary depending on the levels of an organization's human resource management (HRM) investments in pay, benefit, training, and communication; that is, the patterns are more salient when HRM investments are high rather than low. To enhance understanding of how HRM investments have impact on diverse employees, the authors also examine the moderating influence of organizational identification of diverse members that can exert proximal influence on the diversity‐productivity relationship. As predicted, results reveal that high levels of HRM investments influence the gender diversity–workforce productivity association to form a U‐shaped curvilinear relationship. Organizational identification also yields the same moderating patterns. Research and practical implications are discussed. © 2015 Wiley Periodicals, Inc.     

Flexible Estimation of Copulas: An Application to the US Housing Crisis

Zimmer (‘The role of copulas in the housing crisis’, Review of Economics and Statistics 2012; 94 : 607–620) provides an interesting case study of the pitfalls of using parametric copulas to understand the US housing crisis in the latter part of 2000s. The original study by Zimmer (2012) employs a finite‐mixture copula to illustrate that the symmetry of the Gaussian copula may not be tenable, especially for US housing price data during the time period from 1975:Q2 to 2009:Q1. We undertake a replication of his study in a wide sense. First, we replicate the study by incorporating revised data and then extending the dataset to include the most recent data. Second, we implement a nonparametric copula estimator recently proposed by Racine (‘Mixed data kernel copulas’, Empirical Economics forthcoming) to the parametrically filtered data used in Zimmer (2012). Our replication finds that the application of the nonparametric copula to the same and extended filtered data provides an alternative flexible specification for copulas. However, the overall cautionary message of the flexible‐form copula espoused in Zimmer (2012) remains. Copyright © 2015 John Wiley & Sons, Ltd.     

The effects of psychological capital and risk tolerance on service workers’ internal motivation for firm performance and entrepreneurship

This study investigates how psychological capital and risk tolerance can inspire service workers to develop internal motivation and entrepreneurial confidence. Data were gathered from a survey of 255 service workers in the metropolitan area of Seoul, South Korea. The results showed that service workers’ psychological capital consisted of two main constructs: hopeful self-efficacy and optimistic resilience. The results indicated that hopeful self-efficacy had no significant effect on service workers’ internal motivation, while the optimistic resilience had a positive effect which in turn positively impacted entrepreneurial confidence. On the other hand, risk tolerance was found not to affect service workers’ internal motivation. These results imply that optimistic service workers, with recuperative powers, tended to be proactive in their work and have more confidence when establishing new ventures. They also suggest that service firms can improve organizational performance by promoting worker optimism and resilience. This study provides practical insights into why service firms should pay attention to worker optimism and resilience to improve firm performance over the long run, not only for the firms but for the national economy as a whole.     

Reactions to abusive supervision: examining the roles of emotions and gender in the USA

Abusive supervision leads to many detrimental outcomes, yet the role of gender and emotions has received little attention. We applied affective events theory to study emotions in a new context. Using qualitative and quantitative methods, we tested a conditional process model of the effects of abusive supervision on subordinate work and job withdrawal as mediated by negative emotions and moderated by gender. We found support for our proposed model. Specifically, abusive supervision increased work and job withdrawal via victims’ negative emotional reactions. When negative emotions are low, women are more likely to engage in work withdrawal; when negative emotions are high, men are more likely to do so. Additionally, men experiencing high negative emotions are likely to quit their job.     

Relative prices and the demand for money

This paper examines the validity of the conventional specification of money demand with particular reference to the issue of relative prices. It is shown that the conventional money demand function is based on the assumption of weak separability of money from commodities, which forms the basis for the absence of relative prices in money demand. Empirical and presumptive evidence suggests that weak separability is not tenable, implying that relative prices are important in money demand. The inclusion of commodity prices in money demand significantly affects the interest and income elasticity estimates. Finally, it is noted that the aggregate consumption function excluding commodity prices also has no theoretical and empirical base.     

韩国对吉林省直接投资制约因素分析

近年来,韩国对华投资迅速增长,但投资一直集中于东部的环渤海地区,并逐步转向长江三角洲地区,而对吉林省的投资却不足于对全国投资的1%,并出现了下降的趋势。为促进吉林省的经济发展,必须深入分析韩国对吉林省的投资趋势,找出其制约因素,采取积极措施,加大对韩国招商引资力度,把尽可能多的韩资吸引到吉林省来。     

Workforce diversity and firm performance: Relational coordination as a mediator and structural empowerment and multisource feedback as moderators

Workforce composition in organizations has become increasingly diverse. As an important step in determining how workforce diversity leads to firm performance, we proposed relational coordination as a mediator through which diversity in age and education indirectly affects firm performance. We also highlighted two human resource management practices (structural empowerment and multisource feedback) as critical contingencies that moderate the effects of workforce diversity on relational coordination and firm performance. We conducted hierarchical multiple regression on multisource data (including responses from senior directors, department directors, managers, and employees, as well as financial performance) from 189 Korean firms in the manufacturing sector, which yielded support for our hypotheses. These findings offer novel theoretical and practical insights into the effective management of workforce diversity.