Domestic and Foreign Price/Marginal-cost Margins: an Application to Spanish Manufacturing Firms

The authors investigate the differences in margins of export and domestic markets for Spanish manufacturing firms in the period 1990 to 1997. They estimate jointly a multiproduct cost function, a variable factor share equation, and two price/marginal‐cost margin equations. The results indicate that the marginal cost of production sold in export markets is slightly greater than in domestic markets. At the same time, the price/marginal‐cost margins in export markets are smaller than in domestic markets. There is also strong evidence that margins are procyclical in domestic markets, but this evidence is less clear in foreign markets.     

Product differentiation and dynamic price behavior in fish markets

The objective of this paper is to estimate the dynamics of aquaculture and fish prices as a response to price shocks. The vector autoregression approach will be used to explain the dynamics of the sea bream market in both cultured and wild fishing. The main result is that changes in public regulation or in production conditions could stimulate production responses which may take time to settle. Usually, the change is a matter of adjusting between equilibria over a period of time, with the pattern and speed of the adjustment, depending on the nature and degree of disequilibrium in the fishing system. Comments from reviewers have been incorporated into the paper and are gratefully acknowledged. Financial support was provided by Direcció General de Recerca, Departament d'Universitats, Recerca i Societat de la Informació project N^o SGR2001-160.     

Multi-product capacitated facility location problem with general production and building costs

This research introduces the multi-product capacitated facility location problem with general production and building costs (MP-CFLPGC). The MP-CFLPGC extends previous problems found in the literature by including multiple products and general production and building cost functions that allow the modeling of different behaviors like economies of scale and congestion. The MP-CFLPGC is formulated as a mixed integer linear program (MILP). To evaluate the performance of the proposed formulation we analyze the results of a commercial optimizer on a set of 288 randomly generated test instances that resemble the Colombian cement industry supply chain. After one hour the optimizer achieved an optimality gap of 1.0 % or less in 55 % out of the 288 test instances. On average the optimality gap was 3.57 %. Additionally, we propose a randomized mathematical-programming-based heuristic for the test instances where the MILP formulation presents significantly high optimality gaps.     

Successful eco‐innovators: Exploring the association between open inbound knowledge strategies and the performance of eco‐innovative firms

The main purpose of this paper is to analyse the association between open inbound knowledge strategies and the performance of eco‐innovative firms in the food and beverage industry. We propose a mixed framework based on the eco‐innovation literature and the open innovation approach. We consider the characteristics in a traditional sector based upon a resource‐based perspective. Three types of firms are distinguished in terms of their sales growth in the Spanish food industry from the least to the most successful eco‐innovators. Using multinomial logistic regression models, it is shown that the diversity of collaborators (breadth of external sources of knowledge) and joint adoption of product and process eco‐innovations are positively associated with the probability of achieving high sales growth. Moreover, we find an inverted U‐shaped relationship between the breadth of the external search and firm performance, but only for the group of the most successful firms. Moreover, operational flexibility, knowledge‐based capabilities and company size are also positively related to the group of successful eco‐innovators.     

Markups,Bargaining Power and Offshoring: An Empirical Assessment1

This paper tests the pro‐competitive effect of imports on product and labour markets for Spanish manufacturing firms in the period 1990–2005. In doing so, it takes into account the type of imported products: final versus intermediate. Markups are estimated following the procedure suggested by Roeger and including an efficient bargaining model. The observed heterogeneity among firms is parametised to consider additional product standardisation and market concentration. The results support the imports as market discipline hypothesis for importers of final goods, while firms that offshore intermediate inputs show similar markups to nonimporters. Additionally, the union bargaining power is smaller for importers and the more homogeneous is the type of goods elaborated by firms.     

La oralidad y la escritura en el proceso de aprendizaje Aplicación del método aprende a escuchar,pensar y escribir

Research design is quasi-experimental, field, with four longitudinal assessments for two groups (one experimental and one control) of students with irregularity student. Intervention, learns listen-think-write (lltw) method. population, 488 students. With a sample conditioned (students with irregular registration) of 170 students from two university careers of accounting and administration, both manner, 24.3 years old. Material, Raven’s Progressive Matrices test and Learning strategies ACRA test. The impact obtained by the intervention (LLTW) was 23%, significant difference between follow-up evaluation 6 and 12 months. Regarding the improvement of learning skills in post-test measurement showed a general increase in average by 28%. Also it is necessary to say, the decline was failed subjects in the two groups evolving 12 months in control group was 3 to 4 and the experimental group was 1 to 2.     

Can You Hear Me Now? Communication in Virtual Product Development Teams*

Globalization and technological advances are driving organizations to extend the boundaries of new product development (NPD) teams from traditional colocated settings to dispersed or virtual settings. Virtual NPD teams have a wide array of information and communication technologies (ICTs) at their disposal. ICTs allow team members to communicate and collaborate as they cope with the opportunities and challenges of cross‐boundary work. The purpose of this paper is to explore ICT use by members of virtual NPD teams. This study presents an exploratory test and integration of two competing perspectives of media use in virtual teams: media capacity theories and social dynamic media theories. Specifically, this paper examines the role of task type, organizational context, and ICT type as critical contingency variables affecting ICT use. It also examines how different patterns of ICT use relate to individual perceptions of team performance. The findings from this study of 184 members of virtual NPD teams in three global firms suggest that communication via ICTs in virtual NPD teams is contingent on a range of factors.     

Credit Chains and Mortgage Crises

Here I examine a production economy with a financial sector that contains multiple layers of credit. The latter constitute credit chains that include a simple mortgage market. The focus is on the nature and contagion properties of credit chains in an economy where the financial sector plays a real allocating role, and agents have a serious choice of whether to default on mortgages or not. Multiple equilibria with different rates of default are observed, due to the presence of strategic complementarities. A liquidity crunch is associated with higher rates of default that can trigger a financial crisis as well as constrain the purchase of production factors, leading to reductions in welfare, together with potentially serious effects on real economic activity with the potential of causing deep and widespread recessions.