1,721,003 research outputs found
Fisica tecnica. Volume II. Termodinamica
No full textIn this book some aspects of applied Thermodynamics are treated, starting from the basic notions of Physics, that are supposed to be known.
This book was written as a textbook for engineering students, covering the topics of applied Thermodynamics which are most relevant to the following courses. However, the authors feel that it may also be of value for professionals as a reference or a freshen–up tool on the principles of the matter.
All physical quantities are expressed in the units of the International System of Units (SI); this has made it possible to omit the units of measurement in all equations. Only few exceptions are made to this rule, where multiples or submultiples of SI units, or non-SI metric units are used
Fisica Tecnica - Vol.I Trasmissiohe del calore - moto dei fluidi
No full textIn questo libro sono trattati i fondamenti teorici della trasmissione del calore nei tre modi: conduzione, convezione e irraggiamento. Vengono pure esaminati alcuni problemi specifici che interessano i vari campi dell’Ingegneria civile e industriale: scambiatori di calore, alettature, scambi radiativi col Sole e la volta celeste, materiali isolanti, ecc. Viene poi fatta una trattazione introduttiva dei fondamenti del moto dei fluidi nei tubi con qualche cenno sulle correnti fluide esterne e su quelle di fluidi comprimibili. Il libro nasce dalle esigenze didattiche avvertite dagli Autori nella loro esperienza di docenti nei corsi di laurea in Ingegneria, ma può anche interessare il più vasto pubblico degli ingegneri e di chi voglia avvicinarsi — o riavvicinarsi — alla Fisica Tecnica
A Study on Outdoor and Indoor Climate to satisfy particular Requisites in Museum. The case of the Punic Ship in the Marsala's Archaeological Museum
No full textIn the Archaeological Museum in Marsala are keept many archaeological finds discovered in the sea near the city. The most important is the wooden hull of an ancient punic ship found some years ago. The rests of the ship have been submitted to impregnation with PEG, to eliminate the water and the salts absorbed the sea mud, and then is exposed inside a protective awning of plastic material, build up in one of the rooms, in order to contain as much as possible the indoor climatic variations. The responsibles of the museum wants now expose the finds in an free environment in which fixed and steady conditions can be kept. The authors have been requested to study an air condition system that can solve this particular case of protection and conservation of historical heritages. Necessary and preliminary to such a study has been meteorological characterization of the site by means of the long time data analysis and the study of the most suitable indoor climatic parameters to adapt the demand of a safe conservation of the finds with the comfort demands of the visitors
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Specific issues concerning the management of patients on the waiting list and after liver transplantation
No full textThe present document is a second contribution collecting the recommendations of an expert panel of transplant hepatologists appointed by the Italian Association for the Study of the Liver (AISF) concerning the management of certain aspects of liver transplantation, including: the issue of prompt referral; the management of difficult candidates; malnutrition; living related liver transplants; hepatocellular carcinoma; and the role of direct acting antiviral agents before and after transplantation. The statements on each topic were approved by participants at the AISF Transplant Hepatology Expert Meeting organized by the Permanent Liver Transplant Commission in Mondello on 12-13 May 2017. They are graded according to the GRADE grading system
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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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