1,721,138 research outputs found
Coordination model for the self-regulated activity of software-defined networks
Full text linkgraficas, tablasEn esta tesis se estudian, adaptan y aplican dos prometedoras áreas de investigación influyentes en la automatización de Redes de Datos: las Redes definidas por software (Software Definid Network - SDN) y Procesamiento de señales en grafos (Graph Signal Processing -GSP). Este documento presenta un conjunto de estrategias, soportadas por la teoría de procesamiento de señales en grafos, para la autorregulación del comportamiento ante eventos de anormalidad en una red definida por software (SDN) y para la coordinación entre el conjunto de procesos que interactúan en la reprogramación de la Red Definida por Software para lograr un estado funcional acorde a parámetros de normalidad para la red. Las contribuciones y hallazgos más relevantes de esta tesis son los siguientes: 0) Se establece un puente referencial de aplicación entre las áreas de investigación SDN y GSP; 1) se propone e implementa un monitor multicapa, basado en la teoría de procesamiento de señales en grafos que explota las características inherentes a las Redes Definidas por Software (SDN); 2) se propone e implementa una estrategia de autorregulación del direccionamiento de tráfico en una SDN ante la presencia de anomalías, basado en la técnica de aprendizaje por refuerzo (Reinforcement Learning – RL) y en el procesamiento de señales en grafos (GSP); 3) Se propone e implementa una técnica de coordinación de las actividades inherentes a los procesos de adaptación sobre las SDN; 4) se presenta un esquema de conectividad de las herramientas de desarrollo de software que actualmente son utilizadas en procesos de automatización de redes de datos. (Texto tomado de la fuente)In this thesis, two promising research areas that are influential in the automation of Data Networks are studied, adapted and applied: Software Defined Networks (SDN) and Graph Signal Processing (GSP). This document presents a set of strategies, supported by the theory of signal processing in graphs, for the self-regulation of behavior in presence of abnormality events in a network and for the coordination between the set of processes that interact in the reprogramming of the Software Defined Network to achieve a functional state according to normality parameters for the network. The most relevant contributions and findings of this thesis are the following: 0) A referential application bridge is established between the SDN and GSP research areas 1) A multilayer monitor is proposed and implemented, based on the theory of signal processing in graphs that it exploits the characteristics inherent to Software Defined Networks (SDN); 2) a self-regulation strategy for traffic routing in an SDN in the presence of anomalies is proposed and implemented, based on the reinforcement learning technique (Reinforcement Learning - RL) and on graph signal processing (GSP). 3) A coordination technique for the activities inherent to the adaptation processes on SDN is proposed and implemented. 4) a connectivity scheme of the software development tools that are currently used in data network automation processes is presented.DoctoradoDoctor en IngenieríaAutoRedes de Datos y Redes IndustrialesEléctrica, Electrónica, Automatización Y Telecomunicacione
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
Neuropsicología de la demencia semántica
Full text linkLa Demencia Semántica causa alteraciones en la capacidad para recordar el significado de las palabras, rostros y objetos, producto de atrofia asimétrica o bilateral de los lóbulos temporales anteriores. Clínicamente se han observado múltiples síndromes clínicos superpuestos con otras enfermedades degenerativas como la Afasia Primaria Progresiva y la Demencia tipo Alzheimer. El propósito de este estudio fue identificar alteraciones lingüísticas y semánticas en un grupo de pacientes con Demencia Semántica, para explorar la organización cognitiva de su Memoria Semántica. Por esta razón, se compararon pacientes con Demencia Semántica (n=7), afasia primaria progresiva (n=6) y Demencia tipo Alzheimer (n=6), con un grupo de controles (n=7) en diversas pruebas neuropsicológicas. Los déficit semánticos de los pacientes con DS se evidenciaron predominantemente en pruebas de denominación por confrontación visual, definición, reconocimiento y escritura al dictado. Estos hallazgos son consistentes con la Hipótesis del Centro Semántico, en el cual converge información diversa para formar representaciones conceptuales amodales. / Abstract. Semantic dementia causes loss of the ability to remember the meaning of words, faces and objects, which results from asymmetrical or bilateral anterior temporal lobe atrophy in the brain. Clinically, a number of overlapping clinical syndromes are seen with other neurodegenerative diseases like Primary Progressive Aphasia and Alzheimer. The aim of this study was to identify both semantic and linguistic abnormalities in a group of SD patients, in order to explore the cognitive organization of their semantic memory. For this reason, patients with semantic dementia (n=7), primary progressive aphasia (n=6), and Alzheimer’s disease (n=6) were compared with controls (n=7) on different neuropsychological tests. Semantic deficit in the Semantic Dementia group were mainly apparent in tasks of picture naming, verbal definitions, name-picture matching and writing by dictation. The findings are consistent with The Semantic Hub Hypothesis where different information converges to form amodal conceptual representations.Maestrí
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
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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