1,720,970 research outputs found
L’efficienza del settore pubblico regionale attraverso gli indicatori di contesto e la spesa pubblica consolidata
No full textL’efficienza del settore pubblico regionale viene valutata mediante l’impiego di due tecniche non-parametriche, la FDH (Full Disposable Hull) e la DEA (Data Envelopment Analysis), che permettono di stimare l’efficienza di un’unità decisionale appartenente a un insieme omogeneo in base alla distanza fra le combinazioni input-output di quella unità e una frontiera costruita sulla base delle prassi migliori dell’insieme considerato. Nel caso specifico, quest’ultima è stata stimata a partire dalle variabili di contesto della banca dati QCS, utilizzati come misure di output, e della spesa pubblica consolidata, calcolati dal DPS, in qualità di input. Data l’ampiezza delle informazioni utilizzate, la costruzione degli indicatori ha richiesto preliminarmente la scelta di un metodo di normalizzazione e di un criterio di aggregazione. Nel far questo si è verificata anche la possibilità di utilizzare, in una veste nuova, i pesi forniti dall’applicazione della tecnica DEA. Alla luce dei punteggi-efficienza stimati troviamo che: (i) il numero di regioni efficienti cambia a seconda delle ipotesi riguardanti la forma della frontiera; (ii) le regioni efficienti sono prevalentemente quelle del Nord-Est e della fascia Centrale Adriatica (iii) sono presenti significative sacche di inefficienza.The efficiency of the regional public sector is evaluated according to two non-parametric techniques, the FDH and DEA, which estimate the efficiency of a given decision making unit as the distance between the observed input-output combinations and an efficient frontier based on the sample’s best practices. Our exercise utilizes as proxies for the level of outputs the context indicators drawn from the Community Support Framework databank, and as proxies for the level of inputs the consolidated public expenditure estimated by the Department for Development Policies, Ministry of Economy and Finance, Italy. Due to the large amount of variables involved, as a preliminary we select an appropriate normalization method and a suitable aggregation criterion. To this latter end, we also experiment with the weights resulting from the DEA application viewed as a method for achieving robust aggregation. The main findings are as follows: (i) the number of efficient regions changes according to the specific assumptions concerning the shape of the frontier; (ii) efficient regions are generally located in the North-East of Italy and along the Central Adriatic Coast, and finally (iii) there is considerable scope for improving efficienc
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
Comparison of OXITEST and RANCIMAT methods to evaluate the oxidative stability in frying oils
No full textThe oxidation of fatty acids in the presence of
atmospheric oxygen is recognized as one of the main factors
affecting the shelf life of oils and fats causing rancidity
by the formation of off-flavors due to aliphatic aldehydes or
other volatile compounds. Therefore, the oxidative stability
is one of the most important parameters to be evaluated in
the formulation of commercial frying oils. In this regard, the
induction period of 15 frying oils has been measured using
two different methods of accelerated oxidation, OXITEST
and RANCIMAT, and correlated to their fatty acid content
previously detected by gas chromatographic technique.
Frying oils containing high contents of saturated fatty acids
mainly from the palm oil achieved an improved oxidative
stability by increasing their induction period. Moreover,
the linear regression analysis showed a good correlation
between the induction period values of the two instruments.
Hence, the innovative OXITEST method may be an easy,
fast, and eco-friendly alternative to the official RANCIMAT
method for evaluating the oxidative stability in oil- and fat containing
products
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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