1,720,974 research outputs found
SystemC-based electronic system-level design space exploration environment for dedicated heterogeneous multi-processor systems
No full textHW/SW Co-Design of Heterogeneous Multiprocessor Dedicated Systems: a SystemC-based Environment
No full textBenchmarking Analysis and Characterization of Hypervisors for Space Multicore Systems
No full textMulticore systems are becoming widely diffused in the space domain, mainly because of the opportunities to improve performance and, at the same time, to optimize orthogonal metrics (e.g., cost, power consumption). However, the need to consider safety integrity levels, dictated by the relevant standards (i.e., ECSS-Q-ST-80C, ECSSQ-ST-30, ECSSQ-ST-40C, NPD 8700.1E, NPR 8715.3D, JMR-001, OST 134-1021-99), into space applications adds further challenges. In fact, in a multicore system, multiple processing cores share various resources; therefore, the implementation of modern and complex integrated modular avionics systems is problematic. Actually, integrated modular avionics systems are inherently mixed-critical ones where spatial and temporal isolation in the shared resources access is essential. As a way to mitigate such a problem, the exploitation of virtualization technologies allows to guarantee isolation and certification requirements but, at the same time, introduces scheduling overhead and new issues. The selection of the best virtualization technology is just one part of the solution. Then, further benchmarking and validation activities should help developers to certify virtualized environments running on multicore architectures. In such a context, this work proposes a methodology for characterization of hypervisor technologies in the space domain. Experimental results obtained by applying the proposed methodology in order to characterize some reference hypervisors features close the paper
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
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