1,720,992 research outputs found
Un servizio LBS (Location Based Service) info turistico con software Open Source
No full textIl lavoro che si presenta si colloca nell’ambito dei servizi noti come LBS (Location Based Services) e in particolare lo studio ha affrontato le problematiche legate alle diverse componenti di cui questi sono cosituiti e alla standardizzazione ed interoperabilità di un servizio di questo tipo. Si tratta di servizi a valore aggiunto che utilizzano la conoscenza della localizzazione geografica di un utente mobile per fornire dinamicamente a quest’ultimo risposte appropriate alle sue esigenze quali informazioni, mappe ecc..
A livello internazionale sia l’ISO/TC 211 sia l’Open Geospatial Consortium (OGC) hanno emanato direttive e standard per i servizi LBS. L’ISO/TC 211 si è occupata degli standard LBS nei documenti 19132 (Location based services possible standard), 19133 (Location based services tracking and navigation) e 19134 (Multimodal location based services for routing and navigation), mentre l’OGC si è occupata degi LBS emanando lo standard OpenLS.
L’applicazione pratica degli LBS è stata sviluppata in sistemi software da diverse società sia commerciali sia orientate al free/open software. I software di tipo commerciale tuttavia non pubblicizzano alcuna adesione allo standard OpenLS benché alcuni dei produttori siano essi stessi membri dell’OGC.
Per tali motivi, il gruppo di ricerca ha deciso di realizzare una piattaforma client-server aderente allo standard OpenLS. L’applicazione di esempio su cui è stata sviluppata la ricerca è un sistema info-turistico in cui l’utente può richiedere informazioni sulla locazione in cui si trova. Secondo la terminologia dell’OpenLS, questa applicazione si configura come caso particolare di Reverse Geocoding.
E’ stato sviluppato, quindi, un server in linguaggio python che implementa parte della specifica Location Utility Service per l’esecuzione dell’operazione di Reverse Geocoding. Per il lato client è stata implementata un’applicazione basata sul visualizzatore cartografico GvSIG Mini, che consenta di interrogare il servizio di Reverse Geocoding
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
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
An open-HGIS project for the city of Parma: database structure and map registration
Full text linkThe observation of the structure of the city and its inhabitants, and how such system evolves in time, is essential in almost all land planning and urban development activities, as well as in any historical study. Historical GIS in the last decade proved to be one of the most promising frameworks, that can provide innovative tools and methodological approaches in this field, allowing new research perspective and concept in many fields. The paper describes the early stages of the development of a HGIS that considers different historical periods of Parma (Italy), with particular attention to cadastral documents and associated census data. These data are gathered from the main cadastres of the city: the Sardi Atlas of 1767, the Bourbon Cadastre of 1853, the Post-Unitarian Cadastre of 1901 and the Cadastre of 1940. Other social statistics, conserved in the local communal and state archives, such as census reports, building permits, deeds, transfer of property, wills, etc., were considered in the project, leading to a quite complex database structure. In the hope of making the HGIS as flexible and scalable as possible, and to make the system usable to the widest spectrum of users, an open-source database architecture based on Postgresql/Postgis has been developed. The paper provides information about the database structure and the map registration stages, with particular reference to the first historical period considered in the project, based on the Sardi Atlas (drawn in 1767), which can be considered as the first parcelgeometric cadastre of Parma
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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