1,721,139 research outputs found
A semantic driven approach for requirements consistency verification
No full textRequirements Engineering (RE) is a key discipline for the success of software projects. Consistency, completeness, and accuracy are the requirements quality properties to be guaranteed by the verification task in RE. An overview of the actual trends in RE is briefly summarized, focusing more closely on the requirements verification quality properties. Completeness results is the most difficult property to guarantee. It is hard to capture the software behavior against the whole external context. In the last years, research has focused its attention to the application of semantic Web techniques to the different tasks of RE. The adoption of ontologies seems promising to achieve the proper level of formalism and to argue on quality properties. This paper presents a survey of the main concepts that need to be accounted for requirement verification, and proposes an ontological engineering approach to demonstrate the overlapping of requirements against the external context
Demand Hazard Curves for the Assessment of Seismic Induced Slope Displacements in Ischia Island
No full textThis study is part of wider research aimed at the evaluation of ground instability and permanent deformation related to landslides and liquefaction in the volcanic island of Ischia adopting a multi-hazard approach. Ischia was frequently interested by instability caused by both hydro-meteoric and seismic events, the latest of which occurred with an unusual spatial and temporal concentration in 2009, 2017 and 2022 in the same area of Casamicciola. The research is aimed at tentatively evaluate potential cascading effects related to ground instabilities considering the variable susceptibility to seismic instability related to the groundwater fluctuation induced by meteoric events. Here the results of a probabilistic assessment of seismic induced slope displacements carried out with reference to the north-western part of Ischia Island, recently hit by the earthquake, are presented. The study allowed the construction of specific demand hazard curves expressed in terms of annual rate of exceedance of permanent earthquake induced slope displacement. These curves can be a useful tool to be used by both planners and designers. The resulting hazard maps, based on a probabilistic approach, represent the first step toward a multi hazard analysis
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
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