1,720,958 research outputs found
Use of a Health Information System (HIS) for the Epidemiological Surveillance of Leishmaniasis in Urban Areas
No full textIn this paper we propose the use of GIS technologies to realize a Health Information
System (HIS) for the surveillance of leishmaniasis in urban areas. As an example, we
report our experiences and results carrying out an HIS for the surveillance of leishmaniasis
in the city of Messina (Italy). The study area was represented by the city of Messina (38.1-N, 15.5-E) in northern
Sicily. Cases were registered on digital spreadsheets and
were added to the HIS by the use of the geo-code address function. Leishmaniasis both
human and dog cases, were represented as HIS as points as well as or a choroplethic
map showing the number of cases per quarter. Frequencies of cases/quarter were normalized
for the resident quarter population (human or dog) as well as for the quarter
surface. Dog cases density for the study area was calculated by the Kernel function
and expressed as cases/km2. To evaluate the number of infected dogs that could act as
a source of disease for the people hosted in the more at risk buildings, buffer zones,
paste on sand flies feeding range, were drawn around the building polygons and infected
dogs within the buffer area were selected and counted. The HIS approach can provide several types of surveillance activities and analysis, such
as: a) total number and the exact geographic position of the reported cases of disease in
the city; b) calculated density and occurrence of cases at different levels (i.e. quarters or
zip codes); c) analysis of the relationship between human and dog cases and between
disease occurrence and economic or social indicators; d) calculation of the number of
infected dogs that could be a source of disease for humans in the neighbourhood of more
sensitive sites such as hospitals, nursery schools, hospices and others; e) identification of
high-risk areas for target control actions on both hosts and vector
Uso di sistemi informativi sanitari (SIS) per la sorveglianza epidemiologica della leishmaniosi in aree urbane
No full text
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
Use of a health information system (HIS) for the epidemiological surveillance of leishmaniasis in urban areas
No full textIn recent years leishmaniasis has become a serious Public Health problem in Italy. The coexistence of infected dogs, vectors and humans, makes urban areas suitable environment for the spread of this zoonotic disease. With the purpose to improve the current system for the control of leishmaniasis in urban areas, the authors report their experiences carrying out a Health Information System (HIS) for the surveillance of the disease in the city of Messina. The HIS project is built on a dataset containing geographical data on urban environment, census tracts at parish level and data of human and canine leishmaniasis cases reported in the last years. The HIS allows the spatial representation of the disease occurrence and can be used as a novel epidemiological tool to perform area-based surveillance
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
Uso di sistemi informativi sanitari (SIS) per la sorveglianza delle Leishmaniosi in aree urbane: la città di Messina.
No full textIn recent years leishmaniasis has become a serious Public Health problem in Italy. The coexistence of infected dogs, vectors and humans, makes urban areas suitable environment for the spread of this zoonotic disease. With the purpose to improve the current system for the control of leishmaniasis in urban areas, the authors report their experiences carrying out a Health Information System (HIS) for the surveillance of the disease in the city of Messina. The HIS project is built on a dataset containing geographical data on urban environment, census tracts at parish level and data of human and canine leishmaniasis cases reported in the last years. The HIS allows the spatial representation of the disease occurrence and can be used as a novel epidemiological tool to perform area-based surveillance
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