Variety,Globalization, and Social Efficiency

The standard formal presentation of the Dixit‐Stiglitz‐Krugman (DSK) model of monopolistic competition with a constant‐elasticity‐of‐substitution (CES) utility function supposes a sufficient number of firms so that the elasticity of demand facing each variety is approximated by a constant elasticity of substitution. Such a formulation forces economies of scale to be frozen so that firm size never changes. We use a Bertrand‐Nash interpretation of the equilibrium that allows the elasticity of demand facing each variety to depend on the number of varieties, thus allowing the gains from globalization to reflect both the increase in variety and the exploitation of economies of scale. We also develop a precise expression for per capita real income with any number of sectors and examine the age‐old question of the socially optimal number of varieties.     

A Course in Economic Forecasting: Rationale and Content

This note shows that the impact of an increase in product price on factor demand in the typical textbook depiction is overstated to the point of indicating that competitive firms demand factors even when marginal product is negative.     

Comparing variations in labor costs for two vs. one full-time nurse manager

Labor costs for two versus one full-time nurse manager were compared. Results revealed reductions in nursing costs per patient day. These results suggest that innovative models may hold promise as organizations struggle to retain nurses and decrease costs.     

Gender Effects of Social Security Reform in Chile

In 1981 Chile replaced a mature government-run social securitysystem that operated on a pay-as-you-go basis with a privatelymanaged system based on individual retirement accounts. Thenew system is more fiscally sustainable because pension benefitsare defined by contributions. The minimum pension guaranteedto beneficiaries with at least 20 years is funded from generaltaxes, preserving the tight matching between contributions andbenefits. The new system also eliminates several cross-subsidies.Men and women with less than secondary education gain underthe new system, but single women with more education lose. Comparisonof the old and the new systems reveals a complex set of factorsthat cause gender effects given constant behavior or changebehavior across genders.     

Market Orientation in the Transition Economies of Central Europe:: Tests of the Narver and Slater Market Orientation Scales

The Narver and Slater (Narver, J.C., and Slater, S.F.: The Effect of Marketing Orientation on Business Profitability. Journal of Marketing 54 (1990): 20–35.) market orientation scale is tested in the context of the transition economies of central Europe and found to be both valid and reliable. Relationships between market orientation and both marketing strategy and performance broadly follow predictions from the Western literature indicating that the adoption of a market orientation is equally applicable in transition as in Western economies. A number of different approaches, however, are evident in the transition economies suggesting that other business orientations may coexist with a market orientation creating a richer and more complex set or organizational drivers.     

Reward strategy: Time for a more realistic reconceptualization and reinterpretation?

This article focuses on organizations' continued struggles to design and implement successful and credible reward strategies. We argue that a major and neglected factor that accounts for this is how reward strategies are designed and executed with insufficient attention given to employee preferences for different types of reward. We argue that this is both a problem of process in the way reward systems are designed and a problem of how models of reward strategy are built. Developing more effective reward strategies requires a better understanding of holistic rewards and greater attention to line management roles in their implementation. © 2010 Wiley Periodicals, Inc.     

Improving Skewness of Mean-Variance Portfolios

Abstract

The widely accepted belief that asset returns and insurance product line margins are not normally distributed has motivated the use of skewness (or higher than second-order moments) in the context of optimal risk-reward portfolio allocation. Here we propose an optimization-based methodology to substantially improve the skewness of portfolios in the mean-variance efficient frontier. Unlike other related methods, the proposed methodology is very intuitive, noniterative, and simple to implement, and it can be readily and efficiently carried out using state-of-the-art optimization solvers. These characteristics should be very appealing to risk managers.     

Provision versus Appropriation in Symmetric and Asymmetric Social Dilemmas

Social dilemmas characterize decision environments in which individuals' exclusive pursuit of their own material self‐interest can produce inefficient allocations. Social dilemmas are most commonly studied in provision games, such as public goods games and trust games, in which the social dilemma can be manifested in foregone opportunities to create surplus. Appropriation games are sometimes used to study social dilemmas that can be manifested in destruction of surplus, as is typical in common‐pool resource extraction games. A central question is whether social dilemmas are more serious for inhibiting creation of surplus or in promoting its destruction. This question is addressed in this study with an experiment involving three pairs of payoff‐equivalent provision and appropriation games. Some game pairs are symmetric, whereas others involve asymmetric power relationships. We find that play of symmetric provision and appropriation games produces comparable efficiency. In contrast, power asymmetry leads to significantly lower efficiency in an appropriation game than in a payoff‐equivalent provision game. This outcome can be rationalized by reciprocal preference theory but not by models of unconditional social preferences.     

A planning model of pharmaceutical research and development

Despite the popular view that pharmaceutical research is a random process, and by inference unplannable, the long-term survival and development of a pharmaceutical company must be based on a steady flow of new products with a full understanding by management of the relationships between research expenditure and the likely revenues they will produce. In this paper is developed a model of the R&D function which uses probabilistic assumptions to compute the expected stream of revenues from a portfolio of projects involving the major development routes from which pharmaceutical products usually arise. The model is based on expected values of market and technical research performance and hence gives expected or indicated sales in the future as output.