Dynamic volatility and external security related shocks: The case of the Athens Stock Exchange

This paper analyses the impact of exogenous national security related shocks on the time-varying volatility structure of the Greek stock market. Alternative autoregressive conditional heteroscedastic models are estimated, in order to identify the best fit that adequately describes return volatility behavior, testing symmetric as well as asymmetric innovation responses. An external national security related shock factor is included as well as a military crisis dummy, in order to depict possible implications for the conditional variance. The empirical findings appear to support a statistically significant impact of both national security related factors on the Athens stock market returns.     

Using the allocation of emission permits for strategic trade purposes

We show that the presence of transaction costs in emission permit markets challenges the common presumption that grandfathering permits corresponds to lump-sum transfers with no strategic effects on output. Fixed transaction-costs influence firms’ decision to participate in the permits market, while variable transaction-costs affect firms’ output choice by creating a wedge between buyers’ and sellers’ opportunity cost of using permits. Thus, permit grandfathering can be used as a strategic trade instrument even when firms are price takers in the permit markets. Grandfathered permits differ from subsidies in that the stimulus they provide is bounded exogenously and rather limited.     

Coevolution of finite automata with errors

We use a genetic algorithm to simulate the evolution of error-prone finite automata in the repeated Prisoner’s Dilemma game. In particular, the automata are subjected to implementation and perception errors. The computational experiments examine whether and how the distribution of outcomes and genotypes of the coevolved automata change with different levels of errors. We find that the complexity of the automata is decreasing in the probability of errors. Furthermore, the prevailing structures tend to exhibit low reciprocal cooperation and low tolerance to defections as the probability of errors increases. In addition, by varying the error level, the study identifies a threshold. Below the threshold, the prevailing structures are closed-loop (history-dependent) and diverse, which impedes any inferential projections on the superiority of a particular automaton. However, at and above the threshold, the prevailing structures converge to the open-loop (history-independent) automaton Always-Defect (ALLD). Finally, we find that perception errors are more detrimental than implementation errors to the fitness of the automata. These resultsshow that the evolution of cooperative automata is considerably weaker than expected.     

Core service versus relational benefits: what matters most?

Services literature has extensively examined the effects of core service and relational benefits on behavioral outcomes arguing that both components, studied separately, contribute significantly to customer satisfaction and loyalty. However, an integrative examination of the relative importance of both core service and relational benefits is missing. This study examines the combined impact of an extended typology of core service and relational benefits on satisfaction and relational outcomes. One qualitative and one quantitative study are conducted within a banking context. Findings confirm a more extensive typology of relational benefits and reveal that competence (part of the trust benefit) and convenience significantly affect satisfaction; however, when core service is introduced to the model, the effect of relational benefits ceases to be significant. Several future research opportunities for an integrated service benefits approach are identified; and implications for managers on how to allocate their efforts across the various types of service benefits are discussed.     

A Family of Differential Input Demand Systems with Application to Greek Agriculture

This paper develops a family of input demand systems via alternative parametrisations of Theil's differential model. Each member of this family is as flexible as any other locally flexible functional form. More importantly, selection among the competing family members is possible via simple parameter restrictions. The family of differential input demand systems is applied to the agricultural sector in Greece for the period 1961–96. Formal tests suggest that the model with the CBS-type effects dominates the alternative models. Divisia and price elasticities are calculated from the selected model and a decomposition of changes in the demand for inputs into technical change, total input volume, substitution, and residual effects is performed. The empirical results are quite reasonable. Overall, the analysis in this paper indicates that, in certain cases, the differential approach may provide an attractive alternative to the dual approach in modelling production behaviour.     

Intangible Assets and the Network Structure of MNCs

This paper examines the nature of the relationship between corporate intangible assets and the multinational network structure of the firm. Specifically, the question addressed in this paper is whether the nature of corporate intangible assets determines the mode of geographic expansion of the MNC. The interactive effects between the level and type of corporate intangibles and the foreign expansion path of MNCs are also examined. Based on the analysis of 362 MNCs, representing 88 three-digit SIC industries, the results of this study show that R&D-intensive MNCs maintain substantially more geographically diversified and less geographically focused operating networks than advertising-intensive MNCs. Furthermore, R&D-intensive MNCs' foreign investments create more value through geographic diversification, while non-R&D-intensive MNCs benefit the most by increasing the geographic focus of their foreign investment activities. We also document that MNCs without significant levels of technology know-how and marketing based intangible assets can benefit the most from geographic-focused rather than geographic-diversified foreign business operations.     

A life history approach to perceptions of global climate change risk: young adults’ experiences about impacts,causes, and solutions

Although the general acceptance of human-influenced global climate change within the technical sphere of science is important to consider, public perceptions of global climate change risks, impacts, causes, and solutions are as important to policy actions as scientific findings. Yet, studies analyzing climate change risk perceptions suffer from a number of limitations or use only a handful of approaches. Using a limited life history approach, this article answers calls for additional qualitative approaches in risk perception research. This article (1) introduces risk perception researchers to the limited life history method; (2) discovers that young adults articulate climate change solutions at the individual level, often as consumers, and blend their responses to climate change risks and advocacy for solutions with a general, environmentally friendly orientation, a ‘green posture;’ and (3) contends the key sources informing young adults’ perceptions about climate change risk have changed significantly from previous studies.     

Pushing the limit? Fiscal policy in the European Monetary Union

Governments are confronted with the growing realization that they face fiscal limits on the size of debt and deficits relative to GDP. These fiscal limits invalidate Bohn's criterion for fiscal sustainability, which allows explosive debt relative to GDP, eventually violating any fiscal limit. We derive restrictions on a fiscal rule, necessary for the government to eliminate explosive behavior. These restrictions require that the response of the primary surplus to debt be relatively strong, and that the primary surplus be cointegrated with both debt and output. We test these empirical implications for a panel of eleven EMU countries, and find that they are satisfied, implying that fiscal policy does not create explosive behavior.     

Testing for the LOP under nonlinearity: an application to four major EU pork markets

This article develops an econometric procedure to test the validity of the Law of One Price (LOP) under nonlinearity and to distinguish between its strong and its weak version. The procedure is applied to four major EU pork markets using weekly prices from 1991 to 2008. The empirical results suggest that the markets are well integrated, with deviations from the steady‐state price differentials corrected nonlinearly. The LOP is valid for all market pairs and for the pair Germany–Spain it holds in its strong version.     

What Do Unions Do to Productivity? A Meta‐Analysis

The impact of unions on productivity is explored using meta-analysis and meta-regression analysis. It is shown that most of the variation in published results is due to specification differences between studies. After controlling for differences between studies, a negative association between unions and productivity is established for the United Kingdom, whereas a positive association is established for the United States in general and for U.S. manufacturing.