1,354,089 research outputs found
Nucleo-mitochondrial interactions in Saccharomyces cerevisiae: characterisation of a nuclear gene suppressing a defect in mitochondrial tRNAAsp processing.
No full textWe utilized the heat-sensitive mutant strain (Ts932), bearing a mutation at position 61 in the mitochondrial tRNAAsp gene, to identify
nuclear genes involved in tRNA biogenesis; this mutant is defective in 30-end processing and consequently in the production of mature
mitochondrial tRNAAsp. We transformed this strain with a yeast nuclear library and we isolated among other suppressors, an unknown, nonessential
gene (called SMM1, corresponding to open reading frame YNR015w), which restored the growth on glycerol and a normal amount
of processed tRNAAsp in the mutant. The gene contains a domain highly conserved in evolution from bacteria to human and its product has
been recently shown to have dihydrouridine synthase activity
An experimental approach to forecasting the atmospheric pollution in a complex industrial area
No full text
Il rapporto tra andamento dell’economia e infiltrazione della criminalità organizzata nel mercato economico legale:un’analisi della realtà lombarda
No full textQuanto influisce la criminalità organizzata sull’economia del nostro Paese?
Studi recenti mostrano che la criminalità organizzata tende a proporsi come istituzione che opera, in un dato territorio, oltre che come governo del mondo criminale, per proiettare il suo potere di controllo sulla sfera dell'agire legale, ricorrendo alla violenza e alla corruzione, o intessendo relazioni di tipo cooperativo.
Tra le relazioni che la criminalità organizzata stabilisce con il mondo della legalità, sicura importanza rivestono quelle di tipo economico.
Il nesso che lega l'economia legale alla criminalità organizzata è duplice: a) rapporti che si instaurano per effetto della domanda - proveniente dall'economia legale - di beni e servizi illegali; b) rapporti che hanno per oggetto il reinvestimento nell'economia legale dei profitti conseguiti nei mercati illegali.
Questa seconda relazione pone, come questione cruciale nello studio degli effetti economici della criminalità organizzata, l'infiltrazione delle organizzazioni criminali nell'economia legale.
Diversi sono i fini che spingono la criminalità verso l’economia legale: la necessità di mascherare l'attività criminale; la ricerca di investimenti redditizi; l'esigenza di rafforzare il controllo del territorio; la convenienza a intervenire nei mercati legali utilizzando il vantaggio competitivo costituito dall'ampia disponibilità di profitti illeciti.
La zona grigia in cui il crimine organizzato e l'attività d'impresa s'incontrano e si sovrappongono ha confini continuamente mutevoli ed è osservazione condivisa che l’ampliarsi di tale area provoca gravi distorsioni nei sistemi economici nazionali alterando i meccanismi fisiologici di allocazione delle risorse e la concorrenza, a tacere delle conseguenze riconducibili all’assuefazione a comportamenti illegali.
Lo scopo di questo scritto è quello di cercare di indagare le dinamiche economiche di organizzazioni criminali di stampo mafioso nel tentativo di far emergere “quel tessuto criminale e le sue risorse che inquinano ampiamente l’economia, la politica e la vita del paese, riducendo il potenziale di sviluppo umano, civile ed economico
Atmospheric Pollution Map In A Wide Industrial Area: Monitoring And Forecasting By Means Of Ground-Based Remote Sensing Data
No full textVALIDATION OF A STATISTICAL MODEL FOR ATMOSPHERIC POLLUTION FORECAST IN A COMPLEX INDUSTRIAL AREA
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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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