1,721,117 research outputs found
Professor Carolyn Nadeau, Byron S. Tucci Professor of Hispanic Studies
No full textDr. Nadeau is the Byron S. Tucci Professor of Spanish at Illinois Wesleyan University where she teaches medieval and early modern Spanish literature and culture classes as well as the courses, “Spanish for Social Justice” and “Medical Spanish and Cultural Competency for Health Care.” Her research focuses on food representation in sixteenth-century and seventeenth-century Spanish literature.https://digitalcommons.iwu.edu/hispanic_studies_images/1005/thumbnail.jp
Equivalence relation between Fork-Join systems and N-stage queueing networks.
No full textQueueing networks with Fork-Join primitives are commonly used to model several systems with parallel activities. Unfortunately, these models are rather hard to solve analytically, as the limited results that appear in literature testify. The main concern of this paper is to show the equivalence between Fork-Join models, with n parallel servers and n- stage queueing networks with suitable state-dependent service rates. The equivalence relation is demonstrated by observing the isomorphism between the state transition diagrams of the Markovian processes relating to the two systems (both in the open and the short-circuited cases). This equivalence allows us to analytically solve the Fork-Join system with two and three parallel servers by analysis of the n-stage queueing network. The accuracy of this approach i
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
Supporting self-adaptivity for SPMD message-passing applications
No full textReal parallel applications find little benefits from code portability that does not guarantee acceptable efficiency. In this paper, we describe the new features of a framework that allows the development of Single Program Multiple Data (SPMD) applications adaptable to different distributed-memory machines, varying from traditional parallel computers to networks of workstations. Special programming primitives providing indirect accesses to the platform and data domain guarantee code portability and open the way to runtime optimizations carried out by a scheduler and a runtime support
Stochastic bounds on execution times of parallel computations
No full textWe obtain stochastic bounds on execution times of parallel computations assuming ideal conditions for shared resources. A parallel computation is modelled as a task system with precedence constraints expressed as a directed acyclic graph (DAG). The task execution times are assumed independent random variables. The performance measure considered is the overall execution time of the computation. To obtain upper bounds on this measure, we apply stochastic ordering and stochastic comparison technique
Adaptive load balancing of distributed SPMD computations: a transparent approach
No full textEfficient parallel computing on distributed platforms still presents many obstacles. This paper addresses the important issue of masking the power heterogeneity and variability of non-dedicated nodes. To this purpose, we present a load balancing support that autonomously adapts the workload of Single Program Multiple Data (SPMD) applications to platform conditions. This support checks the load status of the nodes at the beginning and during program execution and, if necessary, carries out data migrations from overloaded to underloaded nodes without requiring the programmer to insert load balancing primitives. As additional important contribution to the transparency and efficiency of the framework, we propose a stochastic model for the automatic choice of the optimum interval of activation of the load balancer. Unlike task migration supports for task parallelism and other data migration frameworks for master/slave-based applications, our load balancer is transparent and works for the en..
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
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