1,721,240 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Combining linear programming and principal-agent models: an example from environmental regulation in agriculture
No full textThe paper develops a methodology whereby a Principal-Agent model is combined with Linear Programming in order to deal with the design of environmental regulation in agriculture. Linear Programming is intended here mainly as a tool to estimate an agent's cost/profit function for the purpose of the Principal-Agent model. Two variants of the methodology are considered. First, agents' profit functions are estimated through the interpolation of the results of the parametrisation of the Linear Programming model. In the second option, relevant corner points of the discontinuous profit function generated by the parametrisation of the Linear Programming models are identified. These relevant corner points are then fed into a discrete-action Principal-Agent model. An exploratory application is provided, using a case study related to the purchase of environmental services from agriculture. The results show that Linear programming may represent a useful way to estimate cost/profit functions to feed Principal-Agent models as long as it allows to incorporate more information from the point of view of how decision making is carried out, particularly when the underlying agent's cost/profit function is generated by a bundle of different production activities. However, the choice of the specific procedure should be cautiously evaluated in order to fit the actual properties of the underlying production process. Also, particular attention should be placed on the manner in which constraints and technical coefficients affect the result of the downstream model
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Incentive-compatible targeting for the provision of public goods in agriculture
No full textTargeting is advocated as one of the main strategies to improve effectiveness of environmental policies. Among others, this is very relevant for EU agri-environmental schemes (AESs) through which payments are provided to farmers for the provision of environmental goods. Targeting requires support by way of appropriate knowledge systems and zoning, as well as the definition of priorities for funding when subsidies are involved. However, targeting often fails due to a lack of consideration of the economic incentives to participate in target areas. This is partly motivated by the fact that agents have private information on their compliance costs which is undisclosed to the regulator. The objective of this paper is to design a model of incentive compatible targeting strategies under asymmetric information. The model is then used to evaluate the impact of targeting strategies on designing agri-environmental contracts under adverse selection in different agricultural policy scenarios. The results suggest that targeting choices directly affect the optimal way contracts are designed and that this should be considered in the policy design process in order to avoid a failure of the targeting mechanisms. In the case analysed, different agricultural policy scenarios can significantly affect AES policy design
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Politiche agroambientali e oltre Agriculture and environment: Towards a new generation of agri-environmental policies?
No full textIl workshop intende raccogliere i partecipanti al progetto ITAES (http://merlin.lusignan.inra.fr/ITAES/website) e la comunità scientifica italiana con l’obiettivo di discutere questi temi, in un incontro aperto a rappresentanti delle amministrazioni competenti.
Temi
Il workshop si propone di affrontare i seguenti argomenti:
1. Analisi dei problemi di applicazione e dei risultati della programmazione agro-ambientale.
2. Analisi degli aspetti agro-ambientali della condizionalità e delle altre misure connesse al primo pilastro della PAC.
3. Nuovi meccanismi di incentivazione delle esternalità positive prodotte dal settore agricolo (es. contratti locali).
4. connessioni ed interazione con la normativa ambientale (direttiva quadro sull’acqua, Natura 2000, ecc.)
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