1,721,062 research outputs found

    Posttraumatic stress disorder and complicated grief in bereaved parents of the Sewol Ferry disaster exposed to injustice following the loss

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    BACKGROUND: Perceived justice after man-made disaster bereavement may involve as a protective factor in the recovery process. However, perceived justice related to posttraumatic stress disorder (PTSD) or complicated grief (CG) after disaster bereavement has not been sufficiently discussed in previous studies. AIMS: This study aims to assess PTSD and CG in bereaved parents of Sewol disaster and to explore whether perceived justice is related with the diagnostic groups. METHODS: Bereaved parents of Sewol disaster (N = 122) were interviewed approximately 2 years after the incident. Structured interviews for PTSD and CG were assessed, and perceived institutional justice surrounding the incident was measured. Symptom groups were identified, and multinomial logistic regression was conducted to find whether perceived justice was related with PTSD or CG. RESULTS: Participants showed high rates of CG and PTSD, and were classified into the both PTSD and CG group, the CG-only group and the resilient group. The analysis revealed that less perceived justice and being a mother increased the likelihood of having both PTSD and CG. Less perceived justice also showed a tendency to be associated with having CG without PTSD. CONCLUSION: Parents bereaved by the Sewol disaster had high PTSD and CG related to lower levels of perceived justice surrounding the post-disaster period. Post-disaster environment seeking justice may facilitate the natural grieving process or encourage access to effective individual interventions

    Real time simulation framework for RT-DEVS models

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    This paper presents a real time simulation framework in which simulation models are specified by the real time DEVS (RT-DEVS) formalism. Here, real time simulation denotes the frameworks ability to interact with a surrounding environment, such as software components, hardware components or human operators. Typical examples are man-in-the-loop simulations such as a flight simulation or simulation of a controller with real time constraints. In such simulations, a simulator must handle external events in a timely manner We propose a real time, interactive simulation methodology which concurrently executes RT-DEVS models along with its environment in a time selective manner. The proposed simulation methodology employs an event-driven scheduling policy to meet timing requirements of RT-DEVS models. We developed a real time simulation kernel that supports the proposed simulation methodology. A simple example of real time, interactive simulation demonstrates effectiveness of the proposed methodology and the developed environment

    Managing multimedia data services with multiple ensemble decoding architecture in digital audio broadcasting system

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    This paper proposes the architecture Of multiple ensemble service in DAB network, in which they can transmit and receive more than one ensemble through multiple transmitters, which covers the same service area. Using this architecture, ensemble providers and transmission network providers can have more flexible management environment of DAB networks as well as they can accommodate more than 1.5 Mbps data capacity limit of one ensemble(1)

    A semantics of sequence diagrams

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    We develop a formal semantics of sequence diagrams. The semantics is given in terms of our new temporal logic, named HDTL, which is designed to specify dynamically evolving systems. This approach allows to facilitate the generic feature of sequence diagrams as well as an automatic analysis, the identification of the instances of a sequence diagram over a trace. (C) 2002 Elsevier Science B.V. All rights reserved

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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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