S&P Global Sector survivals: Momentum effects in sector indices underlying iShares

This study investigates survival of the momentum effects in S&P Global 1200 Sector index returns which are underlying indices for iShares, by employing a methodology which allows analyzing the momentum effect without being dependant on zero-investment portfolios. We design a trading strategy based on momentum survival time for 10 S&P Global 1200 Sectors and show that for most of the sectors, long, short and long/short momentum strategies are profitable at the realistic level of transaction costs, generating substantially higher Sharpe ratios than buy and hold sector index strategy.     

Relationship marketing in museums: influence of managers and mode of governance

ABSTRACT

On the bases of relationship marketing and social capital, this paper aims to explore whether museums’ external relationships depend on managers and internal relationships as well as on mode of governance. The empirical findings of a hierarchical regression analysis for a sample of 556 museums indicate that close relationships with the external environment require managerial social capital and a supportive culture that favours internal cohesion. Finally, public museums directly run by government entities remain too bureaucratic and lack incentives to promote internal cohesion as well as relationships with customers and other stakeholders. Implications for managers are discussed.     

Social capital configuration, legal bonds and performance in buyer-supplier relationships

Academics have increasingly recognized the benefits derived from social networks embedded within companies’ buyer-supplier relationships. However, prior research has only examined the influence of social capital elements on performance, either individually or in part. We propose an integrative model examining the relationships among relational, structural and cognitive dimensions of social capital, and between these dimensions and the cost and innovation performance of the firm. A sample of 163 buyer-supplier relationships is used to test the model. Regression results indicate that the relational dimension of social capital fully or partially mediates the effect of the cognitive dimension on performance, and partially mediates the link between the structural dimension, operationalized as social interaction ties, and innovation performance. Further, high levels of legal bonds were found to moderate the relationship between the relational dimension of social capital and performance outcomes. Implications for theory and managers are discussed.     

Online reverse auctions and their role in buyer–supplier relationships

Despite the move in recent years towards supplier partnerships, buying firms need at times to make use of competitive procurement strategies for certain purchases. This study examines the impact of reverse auctions on buyer–supplier relationships through six case studies, analysing primarily the supplier perspective through participant interviews. The authors identify that there are potential benefits for both parties in a reverse auction, which can offer tendering and transactional cost advantages. For buyers, it offers a competitive procurement process. The effect on relationships will depend on the extent to which buyers employ the auction as a price weapon, or whether it is used primarily as a process improvement tool.     

An Investigation of Justice in supply chain relationships and their performance impact

Justice is important in improving performance of supply chain relationships. However, the role of justice in improving performance in supply chain relationships is an under-investigated subject in the literature. In studying the joint impact of justice dimensions, the traditional assumption is that the three forms of justice interact with each other in a multiplicative manner. However, this assumption creates a managerial problem as discussed in this paper. We outline a different view of how the justice dimensions interact with one another utilizing the constraining factor model (CFM). We show that the CFM resolves some of the problems arising from the choice of multiplicative interaction of justice measures on performance. Specifically, we demonstrate that an increase in procedural, distributive or interactional justice results in a significant and positive improvement in performance only if the specific justice dimension is the constraining factor in the relationship. Overall, our analysis suggests that all three dimensions are important and a high level of one of the justice elements will not compensate for a low level of another, a view that is put forward by a number of past research studies in justice. We discuss the theoretical and managerial implications of our findings.     

Building long-term orientation in buyer–supplier relationships: The moderating role of culture

This research investigates buyer–supplier relationships in international markets. Research and practice have shown that buyer–supplier relationships benefit when partners to the relationship exhibit a long-term orientation. The extant literature suggests that a buyer's trust of a supplier and the supplier's performance affect the buyer's long-term orientation toward the relationship. We propose that the relative effects of trust and performance on long-term orientation are moderated by culture – specifically the individualism/collectivism dimension. Hypotheses are tested on data from two individualist and two collectivist cultures, using responses from over 600 purchasing professionals in the United States, Anglophone Canada, Francophone Canada and Mexico. Taken together, empirical findings suggest that cultural differences warrant consideration in developing successful purchasing strategies.     

Purchasing strategies in the Kraljic matrix—A power and dependence perspective

Kraljic's purchasing portfolio approach has inspired many academics to undertake further research into purchasing portfolio models. Refined models typically recommend one purchasing strategy for each portfolio quadrant. Yet, it has been shown that purchasers make a clear distinction between alternative purchasing strategies within each quadrant. The fundamental assumption of portfolio models seems to be that differences in power and dependence between buyers and suppliers exist. Still, little is known about how these concepts influence the choice for a specific purchasing strategy. In this paper, ‘relative power’ and ‘total interdependence’ for a number of portfolio-based purchasing strategies have been quantified empirically, using data from a comprehensive survey among Dutch purchasing professionals. The survey data largely confirmed the hypotheses that were deduced from the literature.     

Identifying and Managing Creative Tasks in Collaborative IS Research Projects

Collaborative research projects require a high amount of creativity to create innovative results. Project management has to ensure that it recognizes and encourages creativity. This can be done successfully only if the nature of creative tasks is well understood. The current literature on creativity provides a well‐accepted model to characterize creativity. Based on a literature review and case study we transfer the findings into the context of collaborative information systems (IS) research projects and we evaluate their applicability. We derive specific criteria and characteristics for the identification of creative tasks, find a set of different task types, and provide implications directly usable by project managers.