1,720,988 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
Grassland Ecosystem Services: Their Economic Evaluation through a Systematic Review
No full textGrasslands provide a wide range of provision, support, regulation, and cultural ecosystem services (ESs), whose valuation methods can be grouped into three categories (ecological, sociocultural, and economic). The present manuscript aims to provide an overview of academic studies on grassland ESs and of the most used economic evaluation methods. To this end, a systematic and bibliometric review was conducted using the scientific database Scopus and the VOSviewer software. The results highlighted that China and the USA were the main countries with the highest number of publications regarding ESs provided by grasslands. The number of publications began to grow starting in 2005, thanks, perhaps, to the publication of influential documents, such as the Millennium Ecosystem Assessment, and the general increase in interest in ecological policy issues. The year 2023 had the highest number of documents in absolute (646), demonstrating the timeliness, importance,
and relevance of this research topic. The most studied grassland ES has been carbon storage; however, a central role was played also by biodiversity. In this context, papers that estimated grassland ESs from an economic perspective represented only 3% of all papers that Scopus has returned. More than half of these referred to the use of equivalent coefficients to calculate the ES value of different land uses/land cover categories or, at most, of 11 types of ES. All this highlights the difficulty in estimating individual ESs provided by grasslands from an economic point of view and the greater propensity to use physical, chemical, and biological indicators. Consequently, the sustainable management of grasslands requires more studies on the economic evaluation of their ES, as well as environmental aspects in the economic accounting of governments, or to implement a support system for farms in
delivering various ecosystem services
Can Sustainability and Biodiversity Conservation Save Native Goat Breeds? The Situation in Campania Region (Southern Italy) between History and Regional Policy Interventions
No full textThe Campania region has a genetic heritage, both vegetal and animal, of great scientific interest, but many genetic resources risk extinction or abandonment. Thus, from a sustainability perspective, their conservation is very important and represents an imperative to allow future generations to satisfy their needs just as we are doing today. The aims of the present paper were to describe the current consistency and importance of goat farming in Italy and in the Campania region and to study its trend from 1861 to understand whether the policies for the sector implemented over time have been sufficient to conserve goat biodiversity. To these ends, the latest available data of the national livestock register of the Italian Ministry of Health, those of the different available Italian agricultural censuses, and historical–cultural documents published over time for the livestock sector were acquired and consulted to describe the goat sector and reconstruct its temporal trend. The results showed that in Italy there are just over 1,000,000 goats (the same consistency as 60 years ago), 50% of which are distributed in the southern regions, and 50,616 farms with goats, 43% of which are extensive. In this contest, the Campania region represents approximately 5% of the national goat population. The continuous decrease in the size of the national and regional goat heritage since the 1920s is the result of the agricultural policy instruments implemented for the livestock sector over time, which have effectively excluded the goat sector. Two small increases in the number of caprines were registered: the first in 1980s, when the Italian scientific community realized that the native goat genetic types, its milk and its organoleptic and dietary qualities could constitute a wealth of endogenous resources that needed to be valorized; the second, in the last decade, due to the actions of sustainability and biodiversity conservation implemented at the national and regional level. At the same time, today the goat sector continues to have a marginal role in the national and regional agricultural economy, and the survival of native goat farming is essentially ensured by sustainable rural communities conceived as the custodians of biodiversity
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
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
Animal Husbandry in the Cilento, Vallo di Diano and Alburni National Park: An Economic-Structural Analysis for the Protection and Enhancement of the Territory and Local Resources
No full textThis research seeks to deepen the current economic and structural aspects of the livestock farms in the rural territory “Casacastra” (Cilento area), to identify critical issues and development opportunities with the intention to enhance and protect the territory under study also through strengthening forms of local economy. Information about the consistency and the typology of livestock farms present in the study area, and the trend in the last twelve years, were acquired thought the consultation of the national livestock register of the Italian Ministry of Health. Subsequently, a questionnaire was submitted to a sample of farmers to better know the characteristics of the breeders and of the husbandries. The results showed that in the study area, there are 4% of the cattle and sheep herds of the Campania Region, and 7% of those with goats. The most representative farm size is the class with less than 20 animals per breeding type, and between 2010 and 2022, there has been a reduction in the number of all types of analyzed husbandries. The most represented productive orientation is that for meat, while the specialization in the production of milk in sheep and goat breeding is completely absent. The interviews revealed that the breeders are almost all over 40 years of age, with middle and high school qualifications and consolidated experience. The workforce involved in the farms is mainly the family one and often breeders are people engaged in other non-agricultural activities. Despite the permanence in some cases of archaic husbandry methods, the breeders play a key role in the study area for the protection of the territory, and the conservation and enhancement of local animal and plant genetic resources are at risk of extinction. Moreover, the survival of this rural context is linked to the development of new forms of local economy, such as the definition of an experiential rural tourist offer, in which the presence of institutions plays a fundamental role
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
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