1,720,979 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
A comprehensive Life Cycle Assessment (LCA) of three apricot orchard systems located in Metapontino area (Southern Italy)
No full textThe aim of the present research was the assessment of environmental impacts and energy consumptions of three apricot orchards managed according to two cultivation systems (integrated and biodynamic) through the Life Cycle Assessment (LCA) methodology and the Energy Analysis (EA). With respect to the Global Warming, both anthropogenic CO2 emissions and biogenic carbon gains (in plant permanent structures and soil) were considered to perform an accurate and complete analysis of the systems under investigation.
The biodynamic system appeared more sustainable in sensu lato. Without taking into account the plantation phase which included fixed structures such as greenhouse covering and support structures, the biodynamic system had lesser impact and energy consumptions per kg with respect to the integrated orchards. Taking into consideration the CO2 balance, a higher total amount of CO2 was fixed at the end of the reference period (20 years) by the biodynamic system, especially into the soil which was the most important CO2 pool sequestering about 45% of the total fixed CO2. This was essentially due to the soil management techniques used which were based on a constant supply of polygenic organic materials with nutrient and structuring functions. Similarly, the biodynamic system showed a favourable energy balance.
The methodologies used in this study (LCA and EA) were very useful to examine the production cycle of apricot orchards differently managed and to identify the individual process steps which were more impactful. In addition, the CO2 balance allowed to consider within the environmental analysis also carbon sources and sinks linked to the orchard production/management evidencing that opportune agricultural management strategies can contrast global warming. Therefore, the present research could suggest a methodology to include agriculture in offset schemes planned within Kyoto Protocol
Il compostaggio per la chiusura del ciclo del carbonio a livello aziendale e territoriale
No full textVariations 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
Il compostaggio per la chiusura del ciclo del carbonio a livello aziendale e territoriale
No full textA comprehensive Life Cycle Assessment (LCA) of three apricot orchard systems located in Metapontino area (Southern Italy)
No full textThe aim of the present research was the assessment of environmental impacts and energy consumptions of three apricot orchards managed according to two cultivation systems (integrated and biodynamic) through the Life Cycle Assessment (LCA) methodology and the Energy Analysis (EA). With respect to the Global Warming, both anthropogenic CO2 emissions and biogenic carbon gains (in plant permanent structures and soil) were considered to perform an accurate and complete analysis of the systems under investigation.
The biodynamic system appeared more sustainable in sensu lato. Without taking into account the plantation phase which included fixed structures such as greenhouse covering and support structures, the biodynamic system had lesser impact and energy consumptions per kg with respect to the integrated orchards. Taking into consideration the CO2 balance, a higher total amount of CO2 was fixed at the end of the reference period (20 years) by the biodynamic system, especially into the soil which was the most important CO2 pool sequestering about 45% of the total fixed CO2. This was essentially due to the soil management techniques used which were based on a constant supply of polygenic organic materials with nutrient and structuring functions. Similarly, the biodynamic system showed a favourable energy balance.
The methodologies used in this study (LCA and EA) were very useful to examine the production cycle of apricot orchards differently managed and to identify the individual process steps which were more impactful. In addition, the CO2 balance allowed to consider within the environmental analysis also carbon sources and sinks linked to the orchard production/management evidencing that opportune agricultural management strategies can contrast global warming. Therefore, the present research could suggest a methodology to include agriculture in offset schemes planned within Kyoto Protocol
Analisi di sostenibilità ed efficienza ambientale di sistemi viticoli dell’Area Cilento, Alburni e Vallo di Diano
No full textAppropriate 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
Analisi di sostenibilità ed efficienza ambientale di sistemi viticoli dell’Area Cilento, Alburni e Vallo di Diano
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