A social welfare function characterizing competitive equilibria of incomplete financial markets

A classic characterization of competitive equilibria views them as feasible allocations maximizing a weighted sum of utilities. It has been applied to establish fundamental properties of the equilibrium notion, such as existence, determinacy, and computability. However, it fails for economies with missing financial markets.We give such a characterization for economies with a single commodity and missing financial markets, by an amended social welfare function. Its parameters capture both the relative importance of households welfare, through the classic welfare weights, as well as the disagreements among them as to the value of the missing markets.As a by-product, we identify the dimension of the set of interior equilibrium allocations.     

Network formation with sequential demands

This paper introduces a non-cooperative game-theoretic model of sequential network formation, in which players propose links and demand payoffs. Payoff division is therefore endogenous. We show that if the value of networks satisfies size monotonicity, then each and every equilibrium network is efficient. The result holds not only when players make absolute participation demands, but also when they are allowed to make link-specific demands.     

Technology development in developing countries: The case of a private R & D institution in Brazil

Research Development (RD) is concerned with the conversion of inventions (i.e. new ideas) into innovations (i.e. new products, processes and services in the market-place). Empirical evidence indicates that the rate of success of RD is small. In the innovation chain of events the scientific or technical accomplishment is but one link, a necessary but not sufficient condition of success. Often the market is the decisive factor.
Many research and development organizations (R & DOs), especially those funded privately, allocate their resources with a strong orientation towards satisfying perceived market needs. If this incentive persists during the R & D work the RD effort will probably be much facilitated.
In the light of the above concepts, the Brazilian R & D and RD experiences are reviewed with practical examples and emphasis on the efforts of Centro de Tecnologia Promon—CTP (Promon Technology Center). CTP works on non-conventional energy, industrial process development and telecommunication product development.
The experience reported is not intended to serve as a general solution to R & D or RD problems in the developing world. The purpose is rather to suggest alternative pathways and to point out the importance of a diversified approach to the tough task of closing the innovation loop.     

INCOME DISTRIBUTIONS IN INPUT-OUTPUT MODELS

The analysis of income distribution (ID) has traditionally been of prime importance for economists and policy-makers. However, the standard input–output (I–O) model is not particularly well equipped for studying current issues such as the consequences of decreasing access to primary inputs or the effects of specific redistributive policies. This paper addresses this gap in the existing literature. We propose that IDs can excellently be studied by restructuring the I–O relations. A new coefficients matrix is defined, the so-called augmented input coefficients matrix. This matrix is the sum of the intermediate input coefficients matrix and newly constructed matrices of sector-specific input coefficients that represent the existing distribution of income. We show that shifts in the distribution can be modelled by attributing weights to these matrices and vary these according to system-specific rules. Numerical illustrations based on the existing literature are given throughout the paper.     

Long-period Positions and Economic Change. A rejoinder

Roncaglia and Nell have criticised the interpretation of Sraffa's normal prices as centres of gravitation for actual prices. Roncaglia mainly focuses on the interpretation of the notion of gravitation in Smith and on the meaning of the ‘given outputs’ in Sraffa. Nell attempts to confine the relevance of Sraffa's theory to specific historical circumstances and to find a role for Sraffa's prices in his version of post-Keynesian price theory. This rejoinder criticises the case made by both Roncaglia and Nell, and defends Sraffa's centre of gravitation view.     

Fair Valuation of Equity-Linked Policies under Insurer Default Risk

Abstract

We consider the problem of computing the fair value of equity-linked policies with an interestrate guarantee when the insurer is subject to credit risk. The framework is developed based on modern financial theory using the no-arbitrage principle. In this context, an equity-linked policy is considered as a vulnerable contingent claim that expires before maturity if the firm asset value reaches a prespecified default threshold depending on the firm’s liabilities. We derive a closedform formula in a continuous-time environment to compute the fair value of the contract. We also develop a discrete-time model that allows us to address fair evaluation when the policy embeds a surrender option.     

Geographic Indications and Farmer‐Owned Brands: Why Do the US and EU Disagree?

Geographic Indications (GIs) identify the geographic origin of products whose quality, reputation or other characteristic can be attributed to the geographic origin. We focus on a subcategory of GIs, Farmer Owned Brands. Like GIs in general, FOBs require governmental assistance to protect the property rights of the brand owners. GIs are receiving increased attention because many countries and producer groups realize the importance of property right protection for GIs, and are negotiating such rights in international forums like the World Trade Organization. Here we explore possible reasons for US opposition to EU policies conferring special property right protection to GIs. We conclude that the most plausible explanation for the US position is the lack of a domestic constituency advocating greater GI protection, which means that the US position represents the interests only of those who stand to lose from such protection. It will take a change in US property right regulations and a widespread understanding and adoption of the concept among producer groups before the political pendulum changes within the US. This process will take several years and until then we will have the unusual situation of the US opposing the only market-based solution to the US rural development problem that we are aware of.     

An integrated framework for the conceptualization of consumers’ perceived-risk processing

Research on risk is built on a complex array of diverse and sometimes inconsistent definitions, constructs, models, and outcomes. This study examines various literatures to formulate an integrated framework for the conceptualization of perceived-risk processing. The framework specifies three phases (framing, assessment, and evaluation) and their accompanying outcomes of risk attention, perceived risk, and risk-taking propensity. Explicit linkages are specified between situational and individual characteristics. Perceived-risk evaluation is identified as concepturally distinct from assessment of perceived risk, and the construct of risk-taking propensity is separated from those of risk affinity and perceived risk. The framework further presents points of intersection between the literatures on perceived risk and the literatures on consumer decision-making, information search, and satisfaction. Finally, it serves as an anchor for framing future research to promote conceptual and methodological consistency, and to guide progress in directions that are consistent with some leading edge paradigms outside of marketing. Margy P. Conchar (concharm@mail.ecu.edu; Ph.D., University of Georgia) is an assistant professor at East Carolina University. Her research focuses on consumer behavior and advertising. Her work in consumer behavior concentrates on risk, motives, and optimal consumption experience. Her research in advertising focuses on the interface between advertising and finance, accounting, or economics. She has previously published in the proceedings of the Academy of Marketing Science, the Association for Consumer Research, the American Marketing Association of Educators, and the Society for Marketing Advances. George M. Zinkhan (gzinkhan@terry.uga.edu; Ph.D., University of Michigan) is the Coca-Cola Company Chair of Marketing at the University of Georgia. His major research interests include advertising, promotion, e-commerce, and knowledge development. Two of his recent coauthored books includeConsumers (2004, McGraw-Hill) andElectronic Commerce: A Strategic Perspective (2000, Dryden). Cara Peters (petersc@winthrop.edu; Ph.D., University of Nebraska) is an assistant professor at Winthrop University. Her research lies in the general areas of consumer behavior and e-commerce. Primarily using mixed methods, she examines risky consumer behaviors as they relate to sociology and psychology. She has published in theJournal of Consumer Psychology andConsumption, Markets, and Culture, among other journals. Sergio Olavarrieta (solavar@negocios.uchile.cl; Ph.D., University of Georgia) is an assistant professor at Universidad de Chile, Santiago, Chile. He is assistant dean of undergraduate programs at the School of Business and Economics at the University of Chile. His research focuses on branding and marketing strategy. He has previously published in theJournal of Strategic Marketing and theInternational Journal of Product Distribution and Logistics Management.     

THEORETICAL FOUNDATIONS OF PAY‐AS‐YOU‐GO DEFINED‐CONTRIBUTION PENSION SCHEMES

The paper inquires into notional defined contribution pension schemes, which retain the pay‐as‐you‐go financing method while adopting the award and indexation formulas typical of funded, defined‐contribution systems. It examines the properties of the new arrangement and compares them with those of the traditional defined‐benefit pay‐as‐you‐go schemes.     

Genetically Modified Crops: Their Market and Welfare Impacts

A framework is developed for examining price and welfare effects of the introduction of genetically modified (GM) products. In the short run, non-GM grain generally becomes another identity-preserved product. However, more profound market effects are observed under some reasonable parameterizations. When calibrated to reflect the U.S. corn market, introducing GM technology increases aggregate welfare over a wide range of scenarios, unless the corresponding production cost savings are small and consumers are seriously concerned about GM products. The possibility that GM technology may reduce aggregate welfare is interesting because the model assumes rational agents and does not include regulatory constraints.