Abstract. Exposure of livestock grazing to forage productivity variation and to market fluctuations affects the risk of investment and returns from cow-calf operations, but little work has been done to empirically compare these returns to the returns that would be demanded by financial markets from assets with similar risk and return characteristics. This study uses historical forage production…

Abstract. Investment in transport infrastructure reduces the cost of distance and enables firms to establish contacts over larger distances. Using data from a panel of Spanish manufacturing firms and geographic information system techniques, this article studies the impact of domestic transport cost reductions on firms’ export market participation, taking into account the role of entry costs and…

Abstract. The purpose of this paper is to analyse and describe the topological properties of the institutional and national collaboration network from the profiles extracted from Google Scholar Citations (GSC). 19,912 unique profiles with “co-authors” were obtained from a web crawl performed in March 2012. Several statistical and network analysis techniques were used to map and analyse these…

Abstract. This paper analyzes empirically whether expansion of a university system affects local industry innovation. We examine how the opening of new university schools in Italy during 1985–2000 affected regional innovation. We find that creation of new schools increased regional innovation activity already within five years. On average, an opening of a new school has led to a seven percent…

Abstract
Purpose
The aim of this paper is to present network visualisation as a way to analyse and to test the design of a website.

Design/methodology/approach
A network graph of the access to the webometrics.info site from its web logs was analysed. Several graphs (navigational and query graphs) with different added variables were…

Abstract. This study examines world scientific production on renewable energy, sustainability and the environment on the basis of bibliometric indicators (scientific production, percentage variation of production, average cites per document, normalized impact, impact, etc.) for the period 2003–08. The analysis is made by country, by research institution, and by scientific journal, using the…

Abstract. The paper introduces the use of blockmodeling in the micro-level study of the internal structure of co-authorship networks over time. Variations in scientific productivity and researcher or research group visibility were determined by observing authors’ role in the core-periphery structure and crossing this information with bibliometric data. Three techniques were applied to represent…

Abstract. The literature has documented a large degree of heterogeneity across firms in terms of productivity. In this article, I focus on market potential as a source of differences in productivity across Spanish manufacturing firms. Market potential is conditioned by the existing transport infrastructure. Transport infrastructure investment improves accessibility to input and output markets and…

Abstract. Bibliometric techniques and social network analysis are used to define the patterns of international medical research in Latin America and the Caribbean based on information available in the Scopus database. The objective was to ascertain countries' capacity to establish intra- and extraregional scientific collaboration. The results show that increased output and citations in medical…

Abstract. Most analyses of the relationship between state institutions and interpersonal trust claim either that the state crowds out trust or that it helps to create trust, acting as a third-party enforcer of agreements. Actually, the relationship between the state and trust is much more complex. This article presents a theoretical model that predicts how trust will evolve in highly efficacious…