43,024 research outputs found

    Studying the Emerging Global Brain: Analyzing and Visualizing the Impact of Co-Authorship Teams

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    This paper introduces a suite of approaches and measures to study the impact of co-authorship teams based on the number of publications and their citations on a local and global scale. In particular, we present a novel weighted graph representation that encodes coupled author-paper networks as a weighted co-authorship graph. This weighted graph representation is applied to a dataset that captures the emergence of a new field of science and comprises 614 papers published by 1,036 unique authors between 1974 and 2004. In order to characterize the properties and evolution of this field we first use four different measures of centrality to identify the impact of authors. A global statistical analysis is performed to characterize the distribution of paper production and paper citations and its correlation with the co-authorship team size. The size of co-authorship clusters over time is examined. Finally, a novel local, author-centered measure based on entropy is applied to determine the global evolution of the field and the identification of the contribution of a single author's impact across all of its co-authorship relations. A visualization of the growth of the weighted co-author network and the results obtained from the statistical analysis indicate a drift towards a more cooperative, global collaboration process as the main drive in the production of scientific knowledge.Comment: 13 pages, 9 figure

    Reflections on the Journal of Cooperatives 1986-2003

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    The Journal of Cooperatives (formally titled the Journal of Agricultural Cooperation) was published as a print journal from 1986 to 2003. The journal resumed publication as an electronic journal in 2007. This article provides a short history of the journal, analyzes trends in authorship, institution, content, research method and intended audience, and considers issues relating to electronic publication. The journal’s historical and current mission statements are also discussed, and a future thrust for the journal is presented.Cooperative, academic journal, electronic publishing, Teaching/Communication/Extension/Profession,

    Institutional aspects of credit cooperatives

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    The most common form of government intervention in the rural sector has been massive lending at subsidized interest rates. Credit programs generally aim to reach small farmers. However, despite the expansion of credit over the last three decades, few farmers in low income countries seem to have received or benefited from such credit. It has thus been common for small-scale farmers to resort to the formation of organized credit groups or cooperatives. This paper is a normative analysis of cooperatives viewed as institutions to improve the plight of small-scale farmers. The purpose is to analyze which structures are most successful, then to promote credit cooperatives and to design an optimal incentive scheme in place of subsidized credit policies of the past. The paper concludes by stating that a policy of providing assistance to existing and potential credit groups on how to set incentives, implement monitoring schemes and develop centralized resources is more desirable and more cost effective than the old fashioned and largely regressive subsidized credit policies.Banks&Banking Reform,Strategic Debt Management,Economic Theory&Research,Environmental Economics&Policies,Insurance&Risk Mitigation

    Do specialization benefits outweigh concentration risks in credit portfolios of German banks?

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    Lending specialization on certain industry sectors can have opposing effects on monitoring (including screening) abilities and on the sectoral concentration risk of a credit portfolio. In this paper, we examine in the first part if monitoring abilities of German cooperative banks and savings banks increase with their specialization on certain industry sectors. We observe that sectoral specialization generally entails better monitoring quality, particularly in the case of the cooperative banks. In the second part we measure the overall effect of better monitoring and the associated higher sectoral credit concentrations on the credit risk of the portfolio. Our empirical results suggest that specialization benefits overcompensate the impact of higher credit concentrations in the case of the cooperative banks. For savings banks, the results on the net effect depend on how specialization is measured. If specialization is gauged by Hirschman Herfindahl indices, the net effect is an increase of portfolio risk due to the higher sectoral concentration. If specialization is instead measured by distance measures, portfolio risk decreases as the impact of better monitoring abilities prevails. --bank lending,loan portfolio,diversification,expected loss,savings banks,cooperative banks,concentration,economic capital,credit risk

    Do Cooperative Banks Really Serve Agricultural Sector in Poland?

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    The aim of the paper is to assess the potential of cooperative banks for serving agricultural sector in Poland and to identify the areas with the most development potential. We discuss the transformation process in the cooperative banking system under market economy, and in particular investigate importance of cooperative banks for farms' financing on the basis of our survey of banks. Moreover, the role of cooperative banks in transmission of Government policy supporting farm sector in Poland is discussed. We find that despite growing competition from the commercial banking sector, farms and rural households in Poland are still of major importance for the cooperative banks in Poland.cooperative banks, agricultural sector, Poland, Agricultural Finance, G21, O18, Q14,

    The importance of social capital in Colombian rural agro-enterprises:

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    This paper characterizes and measures the contribution of social capital to the performance of 50 agroenterprises in Colombia. Using qualitative analysis we document how social capital performs a variety of functions in firms, including providing access information via networks of contacts, reducing transactions costs in contracting via trust, and sustaining capacity for collective action. To estimate social capital's contribution to firm structure and performance, quantitative indicators of firm-level use of social capital are developed based on the number and strength of relationships that firms maintain. Econometric analysis finds that firm-level returns to relationships are high, higher than to physical or human capital. The results suggests that while firms can increase their economic performance by investing in social capital, institutional and technological innovations that ameliorate the effects of the market failures that lead to use of social relationships for business purposes could also improve both equity and efficiency.Capacity,

    A REVIEW OF CONTRIBUTIONS TO THE WESTERN JOURNAL OF AGRICULTURAL ECONOMICS: 1977-81

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    In this study a complete survey of all WJAE articles was conducted. The 158 titles that have appeared in the WJAE as of December 1981 are categorized by institutional category, authorship affiliation, and subject category. These results are compared to similar studies concerning the SJAE and AJAE. Our findings indicate that the WJAE has a broad range of contributors and is not dominated by any one institution, author, or group of authors. We feel that these and other interesting results are of general interest to all WJAE readers.Teaching/Communication/Extension/Profession,

    Rural credit in developing countries

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    Subsidized formal credit to the agricultural sector has been advocated as more efficient, equitable, and easier to implement than, say, land reform. But the record on subsidized credit to farmers is dismal. It shows a significant failure either to achieve an increase of agricultural output cost-effectively or to improve rural income distribution and alleviate poverty. Many of the financial institutions have proven to be inept and to lack accountability. Common features of the success stories are tougher stands on default; strict auditing and accounting procedures and financial control; and some form of joint responsibility or liability by small groups of farmers, whereby default by one member cancels future loans to the whole group.Banks&Banking Reform,Environmental Economics&Policies,Economic Theory&Research,Financial Intermediation,Insurance&Risk Mitigation
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