Acabamentos funcionais têxteis aplicados por estamparia digital em substratos têxteis ativados por plasma

Tese de Doutoramento em Engenharia Têxtil

What to consider for applying backfilling on non-dedicated environments

The resource utilization level in open laboratories of several universities has been shown to be very low. Our aim is to take advantage of those idle resources for parallel computation without disturbing the local load. In order to provide a system that lets us execute parallel applications in such a non-dedicated cluster, we use an integral scheduling system that considers both Space and Time sharing concerns. For dealing with the Time Sharing (TS) aspect, we use a technique based on the communication-driven coscheduling principle. This kind of TS system has some implications on the Space Sharing (SS) system, that force us to modify the way job scheduling is traditionally done. In this paper, we analyze the relation between the TS and the SS systems in a non-dedicated cluster. As a consequence of this analysis, we propose a new technique, termed 3DBackfilling. This proposal implements the well known SS technique of backfilling, but applied to an environment with a MultiProgramming Level (MPL) of the parallel applications that is greater than one. Besides, 3DBackfilling considers the requirements of the local workload running on each node. Our proposal was evaluated in a PVM/MPI Linux cluster, and it was compared with several more traditional SS policies applied to non-dedicated environments.

Prensa en la escuela.

El proyecto propone integrar la prensa en la escuela como elemento auxiliar y de apoyo para su formación en las diferentes áreas curriculares, mediante la cual se despierta el interés del alumnado y se desarrollan distintas capacidades. Los objetivos son: acercar al alumnado a través de la prensa a contenidos actuales y necesarios; hacer más dinámicas y consecuentes las actividades escolares; desarrollar la personalidad en sus dimensiones individual y social; formarles en el respeto a los derechos y libertades; fomentar el espíritu creativo y el sentido crítico; adquirir un sentido de responsabilidad ante las propias acciones; potenciar hábitos de trabajo y técnicas de estudio; y confeccionar un periódico escolar. Para su desarrollo primero se lleva a cabo una pequeña introducción de carácter teórico sobre los medios de comunicación y el mundo periodístico y se contacta con varios periódicos de distintas comunidades para obtener prensa gratuita con la que trabajar en el aula, que será clasificada y ordenada. A lo largo del curso la actividad consiste en que cada alumno selecciona en el periódico la noticia que más le interesa, subraya lo más importante y realiza una ficha de la misma que guarda en su carpeta. Luego expone oralmente el porqué de su elección y clasificación dentro de un archivo general según el interés o relación que tiene con las diferentes áreas curriculares. Otro elemento importante lo constituye la elaboración del periódico escolar en el que se recogen actividades, sugerencias y opiniones de alumnos, padres y profesores (se incluyen dos ejemplares del periódico). La experiencia se considera positiva por su influencia en el desarrollo personal del alumno y en el de las áreas curriculares.

Quantum chemical modeling of perovskite: An investigation of piezoelectricity in ferrite of yttrium

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Knowledge management and strategic orientation: leveraging innovativeness and performance

Purpose - The aim of this study is to investigate whether knowledge management (KM) contributes to the development of strategic orientation and to enhance innovativeness, and whether these three factors contribute to improve business performance. Design/methodology/approach - A sample of 241 Brazilian companies was surveyed, using Web-based questionnaires with 54 questions, using ten-point scales to measure the degree of agreement on each item of each construct. Structural equation modeling techniques were applied for model assessment and analysis of the relationships among constructs. Exploratory factor analysis, confirmatory factor analysis, and path analysis using the technique of structural equation modeling were applied to the data. Findings - Effective KM contributes positively to strategic orientation. Although there is no significant direct effect of KM on innovativeness, the relationship is significant when mediated by strategic orientation. Similarly effective KM has no direct effect on business performance, but this relationship becomes statistically significant when mediated by strategic orientation and innovativeness. Research limitations/implications - The findings indicate that KM permeates all relationships among the constructs, corroborating the argument that knowledge is an essential organizational resource that leverages all value-creating activities. The results indicate that both KM and innovativeness produce significant impacts on performance when they are aligned with a strategic orientation that enables the organization to anticipate and respond to changing market conditions. Originality/value - There is a substantial body of research on several types of relationships involving KM, strategic orientation, innovativeness and performance. This study offers an original contribution by analyzing all of those constructs simultaneously using established scales so that comparative studies are possible.