1,721,057 research outputs found
Modellizzazione dell'adozione di sistemi di mungitura automatici in Noord-Holland
No full textQuesto lavoro ha l'obiettivo di valutare l'impatto di diversi livelli di sussidio nella forma di cofinanziamento all'investimento (misura 121 dei Psr) sull'adozione di Ams negli allevamenti bovini
da latte olandesi, in diverse condizioni di incertezza riguardanti il costo del lavoro, il pagamento
unico aziendale ed il prezzo del latte
Modelling the adoption of automatic milking systems in Noord-Holland
No full textInnovation and new technology adoption represent two central elements for the enterprise and industry development process in agriculture. The objective of this paper is to develop a dynamic farm-household model able to simulate the adoption of Automatic Milking Systems (AMS) by dairy farms when the adoption decision is affected by uncertainty with regard to future conditions (labour
costs, milk prices and policy regulations). The model simulates the decision to replace a traditional milking system with AMS using a Real Options (RO) approach that allows farms to choose the optimal timing of investments. RO is particularly suitable when the
innovation is irreversible and uncertain. Preliminary results show that the adoption of AMS is very much affected by policy
uncertainy and by market conditions. The effect of such uncertainty is to postpone the decision to adopt the new technology until farmers have gathered enough information to reduce the risk associated with an innovation subject to lock-in effect
Modelling the adoption of automatic milking systems in Noord-Holland
No full textInnovation and new technology adoption represent two central elements for the enterprise and industry development process in agriculture. The objective of this paper is to develop a dynamic farm-household model able to simulate the adoption of Automatic Milking Systems (AMS) by dairy farms when the adoption decision is affected by uncertainty with regard to future conditions (labour
costs, milk prices and policy regulations). The model simulates the decision to replace a traditional milking system with AMS using a Real Options (RO) approach that allows farms to choose the optimal timing of investments. RO is particularly suitable when the
innovation is irreversible and uncertain. Preliminary results show that the adoption of AMS is very much affected by policy
uncertainy and by market conditions. The effect of such uncertainty is to postpone the decision to adopt the new technology until farmers have gathered enough information to reduce the risk associated with an innovation subject to lock-in effect
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
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
Simulazione dell’adozione di mungitori automatici nelle aziende olandesi
No full textinnovazione e l’adozione di nuove tecnologie sono due elementi centrali nell’assicurare la vitalità delle imprese e del settore agricolo. L’innovazione è un driver importante di crescita economica. Svolge un ruolo centrale nel raggiungimento degli obiettivi di UE 2020 (European Commission, 2010) e rappresenta una componente fondamentale nel processo di riforma della Politica agricola comune (Pac) . In particolare, negli obiettivi della Pac post 2013, l’innovazione dovrebbe contribuire alla promozione della competitività delle aziende, all’uso sostenibile delle risorse naturali, e ad uno sviluppo rurale bilanciato (European Commission, 2011a,b).
Il settore lattiero dell’UE sta affrontando numerose sfide, a partire dal soft landing delle quote latte e dalla relative aperture del mercato, accompagnato dalla necessità di ridurre i costi di produzione. In aggiunta, in anni recenti, i prezzi del latte hanno visto notevoli fluttuazioni (Oecd-Fao 2012), che contribuiscono all’incertezza delle scelte di investimento. Infine, la riduzione del lavoro disponibile, la ricerca di maggiore flessibilità del lavoro famigliare e la necessità di ridurre i costi hanno incoraggiato l’adozione di tecnologie labour-saving (Sauer and Zilberman, 2012). I sistemi di mungitura automatici (Ams) sono innovazioni che consentono di automatizzare tutte le funzioni relative alla mungitura. Gli Ams sono considerati tra le principali innovazioni nel settore lattiero (Meskens et al., 2001) e negli ultimi anni è stata osservata una forte diffusione di tali sistemi (Heikkila et al., 2012), soprattutto nelle aziende zootecniche del nord Europa, (Sauer and Zilberman, 2012).
Questo lavoro ha l’obiettivo di valutare l’impatto di diversi livelli di sussidio nella forma di cofinanziamento all’investimento (misura 121 dei Psr) sull’adozione di Ams negli allevamenti bovini da latte olandesi, in diverse condizioni di incertezza riguardanti il costo del lavoro, il pagamento unico aziendale ed il prezzo del latte. All’interno della misura 121, il Psr olandese fornisce sussidi agli investimenti agli agricoltori fino al 35-50% dei costi di investimento
Reduction of hot-electron degradation in NMOSFETS with elevated sources and drains realised by SEG of silicon using silane only
No full textDispelling 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
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