1,354,397 research outputs found
Prototipo di telerilevamento geologico-strutturale di una porzione del batolite Ercinico della Sardegna
No full textIl presente lavoro ha lo scopo di sperimentare differenti metodi di rilevamento di grande dettaglio
delle discontinuità in ammassi rocciosi di tipo granitico. L'area di studio, ubicata nel settore nordorientale della Sardegna (Fig. l ), comprende quasi tutto l'arcipelago dell'Isola Maddalena,corrispondente al foglio 214 della cartografia nazionale alla scala 1:50.000. Questa zona, per il prototipo di cartografia proposto, presenta diverse opportunità; in particolare: la parte emersa è
costituita prevalentemente da rocce granitoidi 8° 10° con una straordinaria continuità di affioramento e sono presenti una grande varietà di strutture successive alla loro messa in posto. I dati provenienti dal rilevamento geologico tradizionale e le tecniche di fotogeologia e telerilevamento possono essere utilmenteintegrati in situazioni di questo tipo. Queste metodologie di analisi, affiancate ai moderni sistemi di elaborazione digitale, possono infatti consentire un' alta precisione nella individuazione delle strutture a terra ed una loro implementazione 111 ambiente GIS (Geographic lnformation System). Lo studio delle discontinuità e la realizzazione di un database geografico può inoltre trovare successive applicazioni nella cartografia
geologico-strutturale, nella ricerca d'acqua, nell' attività estrattiva di pietre ornamentali e nella valutazione della stabilità dei versanti. Nel presente progetto il riconoscimento delle discontinuità degli anunassi rocciosi è stato effettuato attraverso tecniche di fotointerpretazione analogica e digitale utilizzando fotografie aeree. Parallelamente alle analisi di laboratorio sono state effettuate due missioni di campagna per la caratterizzazione e la verifica dei dati telerilevati. Vengono di seguito presentate le operazioni effettuate evidenziando anche vantaggi e svantaggi delle singole procedure ed il tempo necessario alla loro esecuzione
L'Italia è prima per Sacrificio Interno Lordo
No full textLa manovra finanziaria 2011-2014 non può essere inquadrata correttamente senza tenere conto di un dato di fondo. E cioè che l’Italia si trova, ormai da anni, nella condizione forzata di esprimere un bilancio statale primario ampiamente positivo. Una strada obbligata a causa dell’esigenza di ridimensionare l’enorme
debito pubblico storico accumulatosi nel passato e di pagarne gli interessi. Se il nostro PIL è cresciuto poco nell’ultimo quindicennio è anche perché l’Italia ha dovuto porre in essere un grande Sacrificio Interno Lordo (SIL), la cui entità è data dal considerevole
sforzo compiuto nella generazione continuativa di importanti avanzi primari
Going 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
Database design and gis application in brownfields management: the case of Torviscosa site,Iitaly.
No full textThis study concern the preparation of a spatial database serviceable to the
management of brownfields remediation, particularly for planning of activities,
collection of subsurface data and for detailing the site conditions to a technical
consulting and administrative authority. The study site, owned by Caffaro SpA,
is located in Torviscosa (Udine, Italy); the industrial plants of Torviscosa have
been established by the company SNIA in 1938. The large extension, importance
and complexity of the site demanded a set of tools to analyse geographical data
coming from various sources, in an efficient way. The database includes
auxiliary data coming from geotechnical and field tests performed during the
investigation phase, in order to define a detailed soil profile of the site. The GIS
system used to manage the data is ARCGISTM by ESRITM with the extension
required for geostatistical, vector and raster analyses. The designed geodatabase
(in MicrosoftTM Access format) contains different feature classes and tables
relative to the modelled entities. All the system has been conceived and designed
in order to have a reliable, comprehensive and user friendly tool to manage all
the assessment, characterisation, decommissioning and clean-up operations of a
huge industrial area, and to allow the full control and information exchange at
any time of a presumably long duration project.
Keywords: GIS, database, DBMS, archive, brownfields, ArcgisTM, OracleTM
Human osteoblastic cell response to a Ca- and P-enriched titanium surface obtained by anodization
No full textThe aim of the present study was to evaluate the in vitro osteogenic potential of subcultured human osteoblastic cells derived from alveolar bone on a titanium (Ti) surface produced by an anodized alkali treatment (BSP-AK). Primary osteoblastic cells were subcultured on BSP-AK and machined Ti discs (control) and grown for periods of up to 21 days under osteogenic conditions. Morphologic and biochemical methods were used to assess important parameters of in vitro bone-like tissue formation. Although no major differences were observed between the BSP-AK and the control Ti surface in terms of cell attachment and mineralized matrix formation, a significant increase in cell population, ALP activity, and collagen content was detected in cultures on BSP-AK surface. Our results demonstrate that human osteoblastic cells are sensitive to the BSP-AK-modified Ti surface during the transitional stage between the end of the proliferative phase and the onset of the differentiation /matrix maturation ones. Together with the good mechanical properties exhibited by the Ca- and P- coating, our findings suggest that BSP-AK treatment could be useful for the development of a new surface for dental and orthopedic implants. (c) 2008 Wiley Periodicals, Inc.J Biomed Mater Res 88A: 841-848, 2009FAPESP State of Sao Paulo Research foundationFAPESP, Brazil[2003/09767-0
Tecniche di Fotogrammetria Digitale e Telerilevamento per lo studio geologico dell'Arcipelago della Maddalena
No full textVariations 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
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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