1,721,336 research outputs found
WIM (Weigh In Motion), Load capacity and Bridge Performance
Full text linkThe continuous ageing and subsequent structural deterioration of a large number of existing structures make essential the development of efficient SHM systems (Structural Health Monitoring). The state of the health of structures is conditioned by several factors that are manifested in terms of cracks, strain changes or thermal gradients. The knowledge of the relationship correlating such factors is therefore essential in providing an effective and useful damage detection analysis in order to improve maintenance activities and make better use of available resources. Successful Structural Health Monitoring strategies require detection of reliable and accurate measures, captured in strategic points of the structure and with systematic or continuous monitoring. Due to the increasing interest on the safeguard of the infrastructures, the scientific research has been devoted to the development of structural monitoring techniques. Instrumentation of structures and bridges is a very good technique for the evaluation of safety and of structural health in order to plan the maintenance program. On these subjects, under the supervision of ISHMII (International Society for Structural Health Monitoring of Intelligent Infrastructures, http://www.ishmii.org), ENEA, Politecnico di Torino, University of Illinois at Chicago, University of Manitoba, GLIS (Base Isolation and other Antiseismic Design Strategies) organized the workshop “Civil Structural Health Monitoring 2”, which was held in Taormina (Italy) between September 28th and October 1st 2008. In this volume a selection of the papers presented is reported. Specifically the main goal of the CSHM2 was to promote international cooperation in the fields of load capacity, bridge performance maintenance and safety, taking into account that bridges are the most vulnerable part of civil transportation system that affects directly the public safety. The organization of the conference arises from the need to focus the attention on the measure of intensity and velocity of moving loads and the evaluation of load carrying capacity of bridges, in order to create a cooperating working group and provide guidelines useful for the future researches in the field. As a matter of fact, a terrific increase of the road traffic happened in the last decades. In the same time also the weight of the vehicle got higher. The acquisition of data about number, type and weight of vehicles is possible by means of WIM (Weigh In Motion) systems, but their use is still scarce. Main topics were: Safety of the existing structures Analysis of the overloading on bridges Evaluation of the suitability of instrumentation, methods and models Solutions by means of innovative technologies of structural monitoring and sensors (WIM sensors, permanent monitoring arrays, etc...)
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
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