A Critical Review of Centrality Measures in Social Networks

Social networks are currently gaining increasing impact in the light of the ongoing growth of web-based services like facebook.com. One major challenge for the economically successful implementation of selected management activities such as viral marketing is the identification of key persons with an outstanding structural position within the network. For this purpose, social network analysis provides a lot of measures for quantifying a member’s interconnectedness within social networks. In this context, our paper shows the state of the art with regard to centrality measures for social networks. Due to strongly differing results with respect to the quality of different centrality measures, this paper also aims at illustrating the tremendous importance of a reflected utilization of existing centrality measures. For this purpose, the paper analyzes five centrality measures commonly discussed in literature on the basis of three simple requirements for the behavior of centrality measures.     

Ideenwettbewerbe als innovatives Markenbindungsinstrument

Onlinebasierte Ideenwettbewerbe mit Web 2.0-Funktionalit?ten bieten neue innovative M?glichkeiten im Online Marketing. Sie tragen dazu bei, die Bekanntheit und positive Wahrnehmung einer Marke in der ?ffentlichkeit zu st?rken. Konsumenten setzen sich intensiver mit einer Marke auseinander, was schlie?lich zu einer st?rkeren Identifikation mit der Marke und Bindung führt. Auch Swarovski, dem Kristall-Weltmarktführer, gelang durch diese Einbindung von Konsumenten der Erfolg.     

The perceived importance of HR duties to Danish line managers

Today, HR scholars widely acknowledge that realising HRM requires the involvement of all managers and that the personal motivation of line managers plays an important role in their successful involvement. Yet, previous research has neglected to study how line managers rate the importance of particular HR duties and how the importance assigned to HR duties varies across managers. Based on a survey of 1,500 Danish managers, we find that ‘motivating others’ is considered the most important HR duty whereas ‘team building’, ‘handling conflicts’ and ‘coaching’ are considered the least important HR duties. Female top managers in the public sector exhibit the greatest interest in HR whereas men at lower managerial levels in the private sector give lowest priority to HR work. We conclude with possible explanations for the observed differences in a Danish context and beyond and provide suggestions for facilitating managerial involvement in HRM. In doing so we are well aware that the Scandinavian model of HRM in general and the Danish implementation in particular may represent a unique frame for the results.     

Will I Fake It? The Interplay of Gender, Machiavellianism, and Self-monitoring on Strategies for Honesty in Job Interviews

The use of deception during social interactions is a serious ethical concern for business. Interpersonal Deception Theory (IDT) proposes that strategies for using deception are influenced by personal factors. We tested this proposal by assessing participants’ strategies for using deception during an employment interview. Specifically, we examined three personal factors [gender, Machiavellianism, and self-monitoring (SM)] and intentions toward four types of deceptive behaviors (Extensive Image Creation, Image Protection, Ingratiation, and Slight Image Creation). We used path analysis to examine the intentions of 125 undergraduate students. Our results partially confirm the proposal of IDT by showing that intentions toward using Extensive Image Creation (i.e., generating wholly untrue personal information) are higher for men than women. Intentions toward Image Protection (i.e., hiding unattractive personal truths) are higher for men and for women high in Machiavellianism relative to women low in Machiavellianism. Intentions toward using deceptive Ingratiation are highest for men and high Machiavellianism women, but only when sufficient SM skills are present. For intentions toward Slight Image Creation (i.e., mild exaggerations to personal truths) there are no gender, Machiavellianism, or SM effects. Our research has implications for understanding how deception in the workplace can begin before an individual is hired, and we offer suggestions for several lines of future research.     

Gender Roles and Humor in Advertising: The Occurrence of Stereotyping in Humorous and Nonhumorous Advertising and Its Consequences for Advertising Effectiveness

The advertising literature includes extensive research on the occurrence and effects of gender-role portrayals in advertising. None of these studies has examined the ways in which humor affects depictions and the advertising effectiveness of these portrayals. This article reports the results of content-analytic and experimental studies that investigate the occurrence and effectiveness of gender stereotyping in humorous and nonhumorous advertising. The findings from these studies are in line with the assumptions of information processing theories. They indicate that the way women and men are stereotyped in advertising is dependent on humor; in particular, traditional male stereotypes are more prevalent in humorous ads, whereas traditional female stereotypes are more prevalent in nonhumorous ads. With respect to the influence of these stereotypes, humor improves consumers’ attitudes, particularly if nontraditional stereotyping is utilized instead of traditional stereotyping. Furthermore, humor in stereotyped advertising influences women more than men. Women evaluate gender portrayals more favorably and as more credible in humorous ads than in nonhumorous ads, particularly when nontraditional stereotyping instead of traditional stereotypes are used. These findings provide implications for gender-role and humor research in advertising and for practitioners who wish to increase the effectiveness of ads that use stereotypes.     

Enlarging the EMU to the east: what effects on trade?

The purpose of this article is to assess the implications of the Economic and Monetary Union (EMU) accession of eight Central and Eastern European Countries (CEECs) on their share of EMU-12 imports. Overcoming biases related to endogeneity, omitted variables and sample selection, our results indicate that the common currency has boosted intra-EMU imports by 7%. Under the assumption that the same relationship between the explanatory variables and imports will hold for EMU-CEEC trade, we intend to predict the future impact of the Euro. Our findings suggest that except for the least integrated countries, Poland, Latvia and Lithuania, all CEECs can expect increases in the EMU-12 import share.

Policy-driven ecosystems for new vaccine development

This paper examines the relationship between biomedical policies and entrepreneurial R&D strategies. Public health programs have been unable to provide effective and affordable treatment of infectious diseases for the poor. While governments have become more open to private sector contributions to policy objectives, it is rare to find new ventures commercializing healthcare innovations for neglected diseases. Two case studies of entrepreneurial ventures, in the UK and China, provide evidence on how resource-constrained firms mobilize participants in policy-specific ecosystems to achieve their goals of new vaccine development for tuberculosis. Ecosystem analysis reveals how the innovators’ business models can align their strategies with national policy objectives.     

Life course pathways to business start-up

We explore how socially embedded life courses of individuals within Britain affect the resources they have available and their capacity to apply those resources to start-up. We propose that there will be common pathways to entrepreneurship from privileged resource ownership and test our propositions by modelling a specific life course framework, based on class and gender. We operationalize our model employing 18 waves of the British Household Panel Survey and event history random effect logistic regression modelling. Our hypotheses receive broad support. Business start-up in Britain is primarily made from privileged class backgrounds that enable resource acquisition and are a means of reproducing or defending prosperity. The poor avoid entrepreneurship except when low household income threatens further downward mobility and entrepreneurship is a more attractive option. We find that gendered childcare responsibilities disrupt class-based pathways to entrepreneurship. We interpret the implications of this study for understanding entrepreneurship and society and suggest research directions.