1,721,023 research outputs found
Multisensor surveillance systems based on image and video data
No full textIn this paper, a brief state of the art in the field of advanced surveillance systems is given. The goal is to provide a framework under which to describe the different contributions to research presented in the special session on multisensor surveillance systems based on image and video data. Some problems of interest considered by current research are highlighted starting from the necessity of augmented perceptual capabilities, to the use of video object based coding techniques, going to the capability of extending current video representation techniques in order to make it possible to easily correlate, recognize, index and retrieve multisensor video observations
A support approach for the modular design of li-ion batteries: A test case with PCM
No full textNowadays, there is an increasing interest in Phase-Change Materials due to their capacity to store latent heat during the phase transition. In the literature, the solid-liquid change is widely applied in cooling applications such as the thermal management of Li-ion batteries. The optimization of the cooling system is one of the solutions to reduce battery aging and increase the battery lifetime. Even if Phase-Change Materials are studied to be used in this context, there is still a lack of suitable solutions to be used in engineering design for a further product commercialization. In this context, the paper proposes a modular approach to support the design of a battery pack considering Phase-Change Materials in the cooling system. The approach shows how a single module of cells can be stacked and how the cooling system of each module can be easily connected to each other. The modularity concept is extended from the electrical configuration to the cooling system. As a test case, a battery module has been analyzed. The battery module has been simulated using a Computer-Aided Engineering tool to analyze the behavior of the temperature profile under loading conditions
Automatic Camera Selection and Fusion for Outdoor Surveillance under Changing Weather Conditions
No full textGoing 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
Photo-polymerized films of Lithium Ion Conducting Solid Polymer Electrolyte for Electrochromic Windows (ECWs)
No full textVariations 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
Detecting Dangerous Behaviors of Mobile Objects in Parking Areas
No full textIn the last decade video-surveillance systems have been developed for monitoring remote environments in order to detect and prevent dangerous situations. Until few years ago, surveillance was performed entirely by human operators, who interpreted the visual information presented to them on one or more monitors
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