1,720,964 research outputs found
Planning Complex Updates to Satisfy Constraint Rules Using a Constraint Logic Search Engine
No full textPlanning Complex Updates to Satisfy Constraint Rules Using a Constraint Logic Search Engine
No full textOn the Move to Meaningful Internet Systems: OTM 2014 Conferences - Confederated International Conferences: CoopIS, and ODBASE 2014, Amantea, Italy, October 27-31, 2014, Proceedings
No full textTowards Multimedia Fragmentation
No full textDatabase fragmentation is a process for reducing irrelevant data accesses by grouping data frequently accessed together in dedicated segments. In this paper, we address multimedia database fragmentation by extending existing fragmentation algorithms to take into account key characteristics of multimedia objects. We particularly discuss multimedia primary horizontal fragmentation and provide a partitioning strategy based on low-level multi-media features. Our approach particularly emphasizes the importance of multimedia predicates implications in optimizing multimedia fragments. To validate our approach, we have implemented a prototype computing multimedia predicates implications. Experimental results are satisfactory.xv, 448 p. : ill.Includes bibliographical references
Formal Specification Of Active Database Functionality: A Survey
No full text. This paper reviews research on the formal specification of active behaviour, indicating both what has been done in this area, and how. The scope of different approaches is compared within a common framework, which reveals that although many aspects of active behaviour have been described formally, no single proposal covers all phenomena associated with active database systems. 1 Introduction Database research has often been characterised by a close association between theory and practice, with formal results being used to guide and underpin the development of novel database systems. The presence of a widely accepted formal description of a language or model can encourage a more focused development effort than generally emerges from empirical work on constructs or systems. In the area of active databases, most research has been empirical in nature, with no widely accepted formal model acting as a starting point for the development of implementations for different data models or syste..
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
- …
