U-commerce: Expanding the universe of marketing

This article introduces several new concepts that lay the conceptual foundation for thinking about next-generation marketing based on ubiquitous networks. U-commerce, orüber-commerce, is predicated on the characteristics of network ubiquity, universality, uniqueness, and unison. It is proposed that the keys to managing network-driven firms are the concepts of u-space and attention analysis. The implications for next-generation marketing in the u-space are explored, with a research agenda identified for scholars and managerial implications recognized for practitioners. Richard T. Watson is the J. Rex Distinguished Chair for Internet Strategy and the director of the Center for Information Systems Leadership in the Terry College of Business, University of Georgia. He has published in leading journals in several fields as well as authored books on data management and electronic commerce and given invited seminars in nearly 20 countries. He is vice president of communications of AIS and recently finished a term as a senior editor ofMIS Quarterly. He is a visiting professor at Agder University College, Norway, and a consulting editor to John Wiley & Sons. Leyland F. Pitt is a professor of marketing in the School of Marketing, Curtin University of Technology, Perth, Australia. He is also adjunct professor of marketing at Kingston Business School, United Kingdom; the University of Lulea, Sweden; and the Ecole Nationale Ponts et Chaussees in Paris. He has also taught marketing and electronic commerce on M. B. A. and executive programs at schools such as Warwick Business School, London Business School, the Graduate School of Business at Columbia University, and the Graham School of Continuing Studies at the University of Chicago. Dr. Pitt is the author of more than 100 papers in scholarly journals, and his work has appeared in publications such asCalifornia Management Review, Sloan Management Review, Journal of the Academy of Marketing Science, Information Systems Research, Journal of Advertising Research, Communications of the ACM, andMIS Quarterly (for which he also served as associate editor). Pierre Berthon is an associate professor of marketing at Bentley College. He has held academic positions at Columbia University, Henley Management College, Cardiff University, and University of Bath. His teaching and research focus on electronic commerce, market information processing, organization and strategy, and management decision making. George M. Zinkhan is the Coca-Cola Company Chair of Marketing at the University of Georgia. After receiving his doctorate at the University of Michigan, he served on the faculty at both the University of Houston and the University of Pittsburgh. His main research focus is on the areas of communication, advertising, and electronic commerce. His recent coauthored books includeElectronic Commerce: A Strategic Perspective (2000) andConsumers (2002).     

The adequacy of asymptotic approximations in the near-integrated autoregressive model with dependent errors

We consider the normalized least squares estimator of the parameter in a nearly integrated first-order autoregressive model with dependent errors. In a first step we consider its asymptotic distribution as well as asymptotic expansion up to order O_p(T⁻¹). We derive a limiting moment generating function which enables us to calculate various distributional quantities by numerical integration. A simulation study is performed to assess the adequacy of the asymptotic distribution when the errors are correlated. We focus our attention on two leading cases: MA(1) errors and AR(1) errors. The asymptotic approximations are shown to be inadequate as the MA root gets close to −1 and as the AR root approaches either −1 or 1. Our theoretical analysis helps to explain and understand the simulation results of Schwert (1989) and DeJong, Nankervis, Savin, and Whiteman (1992) concerning the size and power of Phillips and Perron's (1988) unit root test. A companion paper, Nabeya and Perron (1994), presents alternative asymptotic frameworks in the cases where the usual asymptotic distribution fails to provide an adequate approximation to the finite-sample distribution.     

Forest management: Are double or mixed rotations preferable to clear cutting?

We study a particular uneven-aged forest stand management pattern, variations of which are often advocated in practice to mitigate the adverse effects of clear cutting. The forest stand under consideration is similar to a Faustmann stand, with the following difference: rather than being single aged, the forest tract contains trees of two age classes so that it is submitted to a form of selective cutting. Each harvest involves all of the older trees and only a fraction of the younger ones; hence the name mixed rotation. Trees left standing at harvest help stimulate natural regeneration and improve various environmental and amenity characteristics of the forest. We model this effect by using a cost function that varies with respect to the harvest rate of younger trees. We derive the properties that this cost function must exhibit in order some form of mixed rotation to be superior to the conventional single rotation à la Faustmann; we also characterize the mixed rotation in terms of duration and the harvest rate of younger trees, and we compare its properties with Faustmann’s rule.     

Jointly Optimal Taxes and Enforcement Policies in Response to Tax Evasion

Assuming the government cannot fully observe either individual types or incomes and jointly picks optimal taxes and audit policies against evasion can significantly alter standard results from optimal income taxation and tax‐evasion models, which treat these separately. We consider this when individuals differ in their risk preferences and incomes. Given the resulting complexity, supplementing analytic results with numerical analysis helps explain the structure of the resulting policies and how they change when the distribution of income or the revenue requirements of the government change. We do this analysis with and without audit errors and with incomes exogenous or affected by occupational choice.     

Repeated interaction in standard setting

Standardization may allow the owners of standard‐essential patents to charge higher royalties than would have been negotiated ex ante. In practice, however, standard‐setting efforts are often characterized by repeated interaction and complementarities among technologies. These features give firms that contribute technology to standards both the ability and the incentive to avoid excessive royalties by threatening to exclude other technology contributors from future rounds of standardization if they charge royalties exceeding ‘fair, reasonable, and nondiscriminatory’ (FRAND) levels. We show that such an outcome can be sustained as a subgame‐perfect equilibrium of a repeated standard‐setting game and examine how the decision‐making rules of standard‐setting organizations (SSOs) affect the sustainability of FRAND royalties. Our analysis provides a novel justification for super‐majority requirements and other rules frequently adopted by SSOs.     

Building pragmatist theories of PM practice: Theorizing the act of project management

This article examines project management through the lens of practice. Drawing on the literature, we develop a typological model that brings together four distinct theoretical types of project management practice. Adopting a deliberately critical perspective, we show that the first three types propose a weak conception of the logical relationship between the theory and practice of project management. In contrast, the fourth type, anchored in a pragmatist conception of the theory‐practice link, provides the potential to build strong theories of project management practice. A specific objective is to elucidate the distinct features of the fourth type of theory.     

Costos del despido y ventajas de la medición con métodos directos

Es frecuente achacar los malos resultados del mercado laboral a los costos del despido y a las normas que rigen las relaciones de trabajo. Ahora bien, las investigaciones acerca de las consecuencias económicas de los despidos prestan muy poca atención a la calidad y la precisión de las mediciones, y no arrojan indicaciones concluyentes. Después de pasar revista a los métodos actuales de medición, el autor sostiene que es muy conveniente usar métodos cuantitativos directos a fin de complementar las mediciones indirectas habituales. Para ilustrar esta afirmación se vale de una encuesta efectuada recientemente en Australia.     

Product Unbundling in the Travel Industry: The Economics of Airline Bag Fees

This paper provides theory and evidence on airline bag fees, offering insights into a real‐world case of product unbundling. The theory predicts that an airline's fares should fall when it introduces a bag fee, but that the full‐trip price (the bag fee plus the new fare) could either rise or fall. The empirical evidence presented in the paper provides strong confirmation of the first prediction. The data also suggest that the average fare falls by less than the bag fee itself so that the full price of a trip rises for passengers who choose to check bags.     

THEORY AND EVIDENCE IN PSYCHOLOGY AND ECONOMICS ABOUT MOTIVATION CROWDING OUT: A POSSIBLE CONVERGENCE?

The empirical relevance of motivation crowding out is a controversial issue in economics and psychology. As already pointed out by Frey and Jegen ( 2001 ), this is partly due to the historical development of two distinct and parallel strands of literature that stem from different theoretical traditions, have radically different tenets and therefore, are difficult to reconcile. In this survey, we go back to the details of the debates that took place independently among psychologists and economists, and sketch an integrative interdisciplinary approach likely to favor a more fruitful collaboration between economics and psychology. From this perspective, experimental economics (both field and laboratory) is viewed as a major research field shedding new light on the conditions of relevance of motivation crowding out.     

Fertility and female employment dynamics in Europe: the effect of using alternative econometric modeling assumptions

We investigate the direct and long‐run effects of fertility on employment in Europe, estimating dynamic models of labor supply under different assumptions regarding the exogeneity of fertility and modeling assumptions related to initial conditions, unobserved heterogeneity and serial correlation in the error terms. We find overall large direct and long‐run effects of giving birth on employment probabilities, and these effects differ considerably across countries. We find that within countries the results are sensitive to the statistical assumption made on initial conditions, the inclusion of serial correlation and the assumption of strict exogeneity of children. However, the pattern across countries is robust to these assumptions. We show that such patterns are largely consistent with prevailing institutional differences related to the flexibility of the labor markets and family policies. Copyright © 2009 John Wiley & Sons, Ltd.