1,721,074 research outputs found
Metodi statistici nell'analisi territoraiale (traduzione ialiana del testo del Gruppo Chadule)
No full textThymopentin treatment in patients undergoing surgery for lung carcinoma: Analysis of actuarial survival
No full textThymopentin is increasingly used in cancer patients because it has been observed to be useful in preventing infections in the post-operatory period and follow radio and chemotherapy. Two hundred forty seven patients undergoing macroscopically radical exeresis for non-small-cell lung cancer were randomly assigned to thymopentin treatment or control group. The patients were staged according to TNM system indications and classified as follows; I = 138pts, II = 54pts, IIIa = 55pts. Drug regimen was 1 mg/kg/die in the 3/7 days before surgery and throughout the post-operatory period, and 1 mg/kg every other day in the first year. In subseqent years the frug was administered at the same dosage for one month every three. We calculated the profile of the lymphocyte Leu 1, 4, 7, 3a, 2a subpopulation, and the helper/suppressor ratio within the controll group both prior and following one year from the treatment. We also observed a significant increase of Leu 1, 4 and 3a profile. Survival curves obtained by actuarial evaluation of the patients treated with thymopentin vs non treated patients showed that after 66 months the probability of survival in stage I patients was 78% vs 60% (p < 0.05); in stage II, 65% VS 58% (p = n.s.); in stage IIIa, 16% vs 13% (p = n.s.). In our opinion a positive interaction on survival was probably obtained by an aspecific activation of the immune system; in stage I when exeresis reduces residual disease to a minimum; in stage II and IIIa aspecific stimulation, if any, did not result in increased survival
La tutela contrattuale del lavoro agricolo dipendente (1947-1977)
No full textNell'arco di trent'anni l'assetto del sistema contrattuale del lavoro dipendente in agricoltura italiano è cambiato in modo sostanziale. Da forme di tutela collettiva molto localizzate e differenziate per tipologie contrattuali si è passati a un progressivo riallineamento sino alla stipula di un primo contratto nazionale di categoria per i salariati e i braccianti fissi. Simmetricamente le organizzazioni sindacali di categoria, a inizio periodo significativamente distanti per impostazioni culturali e linee d'azione, si sono indirizzate verso una più matura accezione del loro ruolo contrattuale consono a una moderna pratica delle relazioni industrial
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
Il coltivatore nella rete. Una messa a fuoco dei rapporti tra agricoltura e servizi nel secondo Novecento
No full textIl saggio tratta degli anni Cinquanta e Sessanta, la fase più controversa della “grande trasformazione” del mondo rurale. Sono analizzati i riflessi dello sviluppo di fattori esterni (la tecnologia, le organizzazioni agrarie, le istituzioni, i rapporti intersettoriali) sull’impresa agraria, specialmente quella diretto-coltivatrice o contadina. In primo luogo vengono esplorati i principali cambiamenti avvenuti nelle strutture agricole dell'Italia contemporanea - la riduzione delle aziende e la concentrazione della produzione in alcune aree; il mutamento delle tipologie aziendali, con la disintegrazione del latifondo, l'esaurimento della mezzadria e l'espansione dell’affitto e della proprietà diretto-coltivatrice; la diffusione di aziende part-time e della pluriattività; la richiesta di imprenditorialità e professionalità del coltivatore. Vengono poi considerati i consumi dell’agricoltura e i suoi rapporti con l’industria, insieme all'importanza crescente dei consorzi agrari, delle associazioni agricole, degli enti di riforma (poi enti regionali di sviluppo). Altri servizi extra-aziendali provennero dal contoterzismo, i cui effetti sono controversi. In conclusione sono richiamate le diverse interpretazioni in merito ai rapporti tra l'impresa coltivatrice e gli altri settori, dalla contadinizzazione al depotenziamento della storica autonomia dell'impresa coltivatriceThe essay deals with the 1950s and 1960s, the most controversial phase of the "great transformation" of the Italian rural world. The development of external many external factors (technology, organizations, institutions, industry, and trade) reshaped the peasant and the capitalistic farms. Large changes occurred in the agricultural structures of contemporary Italy, such as the reduction of farms and the concentration of production in some regions; the disintegration of the extensive large estates (the so-called "latifondi"), the end of classical sharecropping, and the expansion of farm leasing and direct-management; the spreading of part-time and pluriactive farms; the demand for more professionalism in farming. The agricultural consumptions and their relations with the industrial sector are then considered, together with the role of new agricultural associations and special public entities "for the transformation of agriculture and land tenure ("enti di riforma agraria"). Other services to farms were offered by the machinery subcontracting - whose effects are, however, controversial. In conclusion, various interpretations about the changing relationships between the farm and its environment are recalled, from peasantization to the weakening of the farmer's independence
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
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