Polyhedral Combinatorics in Combinatorial Optimization

Polyhedral combinatorics is a subarea of combinatorial optimization of increasing practical importance. It deals with the application of the theory of linear systems and linear algebra to combinatorial problems. The paper is not intended as a survey on polyhedral combinatorics but it reviews some of the main concepts and proof techniques.     

Inferences about the parameters of a time series model with changing variance

Summary We consider the problem of making inferences about the parameters of a time series model when there is the possibility of a discrete variance change at an unknown time point. For this we obtain the posterior distributions of the parameters and of the variance ratio.     

Unlocking the potential of advanced manufacturing technologies

This research examines whether investments in advanced manufacturing technologies (AMTs) such as flexible manufacturing systems (FMS), computer aided design (CAD), computer aided manufacturing (CAM), robotics, etc., are more likely to lead to improved performance if they are supported by improvements in the manufacturing infrastructure of the company. This question is evaluated using data gathered from 202 manufacturing plants chosen from industries generally considered to have relatively high investments in technology.Multiple item scales are developed and adapted from sources in the literature to measure investments in technology, infrastructure, and the performance of the plant. Evidence supporting the reliability and validity of these scales is provided. Hierarchical regression is used to analyze the relationship between technology, infrastructure, and performance. The results suggest that there is an important interaction between the adoption of advanced manufacturing technologies and investments in infrastructure. Firms that invest in both AMTs and infrastructure perform better than firms which only invest in one or the other. Separate analyses on sub-samples of firms with the highest and lowest investments in AMTs show that infrastructural investments have a stronger relationship with performance in the high investment group. Thus, the data indicate that infrastructural investments provide a key to unlocking the potential of advanced manufacturing technologies.     

BEYOND THE HYPE: INTELLECTUAL PROPERTY AND THE KNOWLEDGE SOCIETY/KNOWLEDGE ECONOMY

Abstract.  This paper explores the debates surrounding whether or not we have now moved into a new knowledge economy and/or knowledge society and if so whether this shift is as significant and as far reaching as the industrial revolution. In this possible transformation the place of information communications technologies has been crucial. Debate has occurred across both economics and sociology with differing emphases as is shown in the ranges of definitions that we review in the paper. One consistent factor is the lack of clarity and consistency between them both within and across the disciplines. In order to explore the issues that the debates raises in a more grounded way, the paper explores them in relation to intellectual property (IP) and the intellectual commons in the process of innovation, growth and economic development. The paper is developed through an analysis first of the industrial revolution and the role within this of uncertainty, technologies, complementarities and elective affinities and the way IP was protected and controlled through patents, secrecy, being first to the market and copyright. The second part of the paper examines definitions of the knowledge economy and society and the role within these of information communication technologies in order to explore whether the ways that IP is protected and controlled have changed. In the debate about the 'knowledge economy and society' the role of innovation via human capital with a greater reliance on intellectual capabilities has been emphasized. The role of IP thus remains central but is now challenged by the rise of new forms of communication, which make its protection harder and move much of the concern with respect to regulation to a global rather than national and local level.     

The Impact of Non-Normality and Estimation Methods in SEM on Satisfaction Research in Marketing

This paper discusses consequences of violating the normal distribution assumption imbedded in Structural Equation Modeling (SEM). Based on real data from a large sample customer satisfaction survey we follow the procedures as suggested in leading textbooks. We document consequences of this practice and discuss its impact on decision making in marketing.     

Duration dependence testing for speculative bubbles

Prior research has employed a number of methods to test for speculative bubbles in asset prices, including a method based on the concept of duration dependence. This study explores whether duration dependence tests for speculative bubbles are sensitive to specification decisions. Our results question the efficacy of using measures of duration dependence to test for speculative bubbles. In particular, we find that evidence of duration dependence is sensitive to the method of correcting for discrete observation of continuous duration, the use of value-weighted versus equally weighted portfolios, and the use of monthly versus weekly runs of abnormal returns. (JEL C41, G12)     

Driving organizational citizenship behaviors and salesperson in-role behavior performance: The role of management control and perceived organizational support

Interest in management control approaches and organizational factors associated with higher levels of salesperson performance is reflected in research streams concerned with behavior-based control strategies and organizational citizenship behaviors (OCBs). This study makes two distinct additions to the literature relating to control, organizational citizenship behaviors and salesperson performance. First, the study distinguishes between salesperson in-role behavior performance and outcome performance to model in-role behavior performance as a mediator between OCB and outcome performance. Second, the work supports sales manager control as an antecedent to OCB. A second model introduces perceived organizational support (POS) as an additional antecedent to salesperson OCB, and more important, as a consequence of sales manager control. This construct has not been included in prior salesperson OCB studies. Results show sales manage control has a stronger impact on OCB through POS, than directly, and POS has a strong impact on salesperson OCB. Nigel F. Piercy (Nigel.Piercy@wbs.ac.uk) is a professor of marketing in the Warwick Business School at the University of Warwick, United Kingdom. He holds a Ph.D. from the University of Wales and a higher doctorate (D.Litt) from Heriot-Watt University, Edinburgh. His current research interests focus on strategic sales and account management. His work has been published in many journals including theJournal of Marketing, theJournal of International Marketing, and theJournal of the Academy of Marketing Science. He is coauthor to David Cravens onStrategic Marketing (8th ed., Irwin/McGraw-Hill, 2006). David W. Cravens (D.Cravens@tcu.edu) holds the Eunice and James L. West Chair of American Enterprise Studies and is a professor of marketing in the M. J. Neeley School of Business at Texas Christian University, Fort Worth, Texas. He has a doctorate in business administration from Indiana University. His areas of specialization include marketing strategy and planning, sales management, and new product planning. His research has been published in a wide range of journals including theJournal of Marketing, theJournal of Marketing Research, the Journal of the Academy of Marketing Science, and theInternational Journal of Marketing. Nikala Lane (Nikala.Lane@wbs.ac.uk) is a senior lecturer in marketing in the Warwick Business School at the University of Warwick, United Kingdom. She holds a Ph.D. from the University of Wales and was previously a senior research associate at Cardiff University. Her research interests are focused on gender and ethics issues in sales and marketing management. Her work has been published widely in the international literature and includes articles in theJournal of Management Studies, theBritish Journal of Management, the Journal of Business Ethics, and theJournal of Personal Selling & Sales Management. Douglas W. Vorhies (dvorhies@bus.olemiss.edu) is an assistant professor of marketing in the School of Business Administration at the University of Mississippi. His primary research interests are in the areas of marketing strategy, marketing resources and capabilities, the links between innovation, strategic market management and performance, and professional selling and sales management. His other work has been published in many journals including theJournal of Marketing, Decision Sciences, theJournal of Product Innovation Management, theEuropean Journal of Marketing, and theJournal of Personal Selling and Sales Management.     

Branding strategies,marketing communication,and perceived brand meaning: The transfer of purposive,goal-oriented brand meaning to brand extensions

This article develops and tests a conceptual model of the transfer process whereby perceived similarity organized around shared goals facilitates the transfer of knowledge and affect from a parent brand to an extension of that brand. Empirical results, based on two well-known brands and two hypothetical product extensions for each brand, demonstrate that the availability of well-formed, goal-derived categories associated with a parent brand establishes an organizing framework for consumers' assessments of similarity thatfacilitates the transfer of consumer knowledge and attitude from the parent brand to a brand extension in another product category. This facilitating effect of similarity does not occur in the absence of goal-derived categories. The results also reveal how marketing communication can be used to facilitate the transfer process by framing similarity in terms of common goals. Implications are discussed for the organization of consumer knowledge and affect across product categories and for understanding prior research findings on brand extension. Ingrid M. Martin (imartin@csulb.edu) is an associate professor of marketing at California State University at Long Beach. Her research has examined issues in the area of consumer goals as they guide structuring and processing marketing information, product choice and usage. Her research has been published in theJournal of Consumer Research, Journal of Marketing Research, Journal of Public Policy & Research, and five book chapters. David W. Stewart (david.stewart@marshall.usc.edu) is the Robert E. Brooker Professor of Marketing in the Marshall School of Business at the University of Southern California. He is the immediate past editor of theJournal of Marketing. Dr. Stewart has authored or co-authored more than 200 publications and seven books. Shashi Matta (matta@marshall.usc.edu) is a doctoral candidate in marketing at the Marshal School of Business, University of Southern California. His research interests include branding, and services marketing. Shashi’s research has been published in theJournal of Consumer Research.     

The relationship between major-league sports’ official sponsorship announcements and the stock prices of sponsoring firms

This study presents analysis of the impact of “official product” sports sponsorships with the National Football League (NFL), Major League Baseball (MLB), the National Hockey League (NHL), the National Basketball Association (NBA), and the Professional Golfers Association (PGA) on the stock prices of sponsoring firms. The primary finding of the study is that, in the main, announcements were accompanied by increases in shareholder wealth. The 53 sponsors analyzed experienced mean increases in stock valuations of about $257 million. A multiple regression analysis of firm-specific stock price changes and selected corporate and sponsorship attributes indicates that official product sponsorships with the NBA, NHL, and PGA and those with smaller market shares were associated with the largest gains in share prices. Although corporate cashflow (a proxy for agency conflicts) is statistically unrelated to shareholder approval, sponsorships by high-technology companies were associated with stronger stock price reactions than otherwise. Finally, product congruence with the sponsored sport was positively related to changes in stock prices. T. Bettina Cornwell (b.cornwell@business.uq.edu.au) is Professor of Marketing and Leader of the Marketing cluster in the UQ Business School at the University of Queensland, Australia. She was formerly Professor of Marketing in the Fogelman College of Business and Economics at the University of Memphis. She received her Ph.D. from the University of Texas. Her research focuses on promotion and consumer behavior, especially with regard to international and public policy issues. Other articles on the topic of sponsorship-linked marketing have recently appeared in theJournal of Advertising, the Journal of Advertising Research, theJournal of Business Research, andPsychology & Marketing. Stephen W. Pruitt (pruittst@umkc.edu) is the holder of the Arvin Gottlieb/Missouri Endowed Chair of Business Economics and Finance in the Henry W. Bloch School of Business and Public Administration at the University of Missouri-Kansas City. He received his Ph.D. from Florida State University. He has published more than 45 articles, most of which employ event study methodologies, in journals such as theJournal of Finance, theJournal of Political Economy, Financial Management, theJournal of Public Policy and Marketing, and theJournal of Advertising Research. John M. Clark (clarkj@cba.usm.edu) is an assistant professor of finance at the University of Southern Mississippi. He received his Ph.D. from the University of Alabama. His research interests include options and other derivatives, investments, and the impact of real events upon the stock prices of corporations. His work has appeared in scholarly outlets such as theJournal of Advertising Research, theFinancial Review, and theJournal of Business Ethics.     

Export marketing,interfunctional interactions,and performance consequences

Firms with export operations have internal environments that are often geared toward serving the home market. As a result, export marketing and other business functions compete for resources, which thus increases the likelihood of conflict between them. Using survey responses from more than 700 exporting firms, the authors test a model of the antecedents and consequences of two important interaction variables: exporting’s interfunctional connectedness and conflict. The model explains 52 percent and 49 percent of variance in exporting connectedness and conflict, respectively. The authors identify the key drivers of successful interactions as follows: management commitment, organizational training and reward systems, relative functional identification, centralization, and export employee job satisfaction and commitment. The authors also demonstrate that connectedness is most critical for export success when export markets are in a state of turbulence, whereas conflict is most detrimental when the firm’s export environment is stable. John W. Cadogan (j.w.cadogan@lboro.ac.uk), Ph.D., is a professor of marketing in the Business School at Loughborough University, United Kingdom. His primary areas of research interest are international marketing, marketing strategy, and sales management. He has published on these issues in theJournal of International Business Studies, theInternational Journal of Research in Marketing, theJournal of Business Research, Industrial Marketing Management, theEuropean Journal of Marketing, theInternational Marketing Review, theJournal of Marketing Management, theJournal of Strategic Marketing, and other academic journals. He received his degree from the University of Wales (United Kingdom). Sanna Sundqvist (sanna.sundqvist@lut.fi), Ph.D., is a professor in international marketing in the Department of Business Administration at the Lappeenranta University of Technology (Finland). Her research interests deal with the international diffusion of innovations, market orientation (especially in an international context), and consumers’ adoption behavior. She has published in theJournal of Business Research, theInternational Journal of Research in Marketing, theEuropean Journal of Marketing, theCanadian Journal of Administrative Sciences, and theAustralasian Marketing Journal. She received her degree from the Lappeenranta University of Technology, Finland. Risto T. Saiminen (risto.salminen@lut.fi), Ph.D., is a professor of industrial engineering and management, especially marketing, in the Department of Industrial Engineering and Management at Lappeenranta University of Technology, Finland. His primary areas of research interest are customer relationships and networks in business marketing, pedagogy in industrial engineering and management, and international marketing. He has published on these issues in theJournal of Business and Industrial Marketing, theJournal of Marketing Management, theEuropean Journal of Engineering Education, theInternational Journal of Research in Marketing, theEuropean Journal of Marketing, and theAustralasian Marketing Journal. He received his degree from Lappeenranta University of Technology, Finland. Kaisu Puumalainen (kaisu.puumalainen@lut.fi), Ph.D., is a professor in technology research in the Department of Business Administration at Lappeenranta University of Technology, Finland. Her primary areas of research interest are innovation, international marketing, and small businesses. She has published on these issues in theInternational Journal of Research in Marketing, theJournal of Business Research, theEuropean Journal of Marketing, R&D Management, theCanadian Journal of Administrative Sciences, theJournal of International Entrepreneurship, theAustralasian Marketing Journal, and theInternational Journal of Production Economics. She received her degree from the Lappeenranta University of Technology, Finland.