Estudio de factibilidad para la creación de un Centro de atención psico-social para hijos de emigrantes en la ciudad de Ibarra

Identificar la situación actual de la migración en la cuidad de Ibarra mediante un diagnóstico externo para determinar aliados, oportunidades, oponentes y riesgos.El presente trabajo de grado titulado ESTUDIO DE FACTIBILIDAD PARA LA CREACIÓN DE UN CENTRO DE ATENCIÓN PSICO-SOCIAL PARA HIJOS DE EMIGRANTES EN LA CIUDAD DE IBARRA se lo ha realizado con finalidad de gestionarlo a futuro. De la investigación se destacan los siguientes hallazgos: Del diagnóstico realizado se llega a conocer que en la ciudad de Ibarra existe la necesidad de un centro Psico-Social que este encaminado a la exclusivamente a la atención de los hijos de migrantes, a través del estudio de mercado realizado se puede identificar en qué nivel se encuentra la aceptación de este centro el mismo que está enfocado a resolver los problemas psicológicos social de los jóvenes. Con el desarrollo del estudio técnico, se considera que en centro debe estar ubicado en las calles: Chica Narváez y Pedro Moncayo ya es el lugar más idóneo para la creación de este Centro ya que cuenta con muchos factores que son parte del proyecto a realizarse, a través del análisis financiero se determina el capital con el que debe contar para dar inicio sus actividades los indicadores aplicados arrogan resultados de factibilidad, cabe señalar a futuro se debe realizar ajustes basados a escenarios actuales, el talento humano para su funcionamiento debe ser de calidad razón por la cual se diseñó una matriz de competencias para poder contratar al más idóneo. Los impactos que presenta el proyecto son buenos porque está encaminado a la ayuda del mejoramiento psicólogo de los niños que sufren la falta de sus padres por causa de la migración a otros países. Finalmente se ha redactado las conclusiones más trascendentales de la investigación efectuada con sus respectivas recomendaciones

Effects of Diets on Fatty Liver Hemorrhagic Syndrome (FLHS)

Two experiments were conducted to study the effect of fermentation by-products and oats on production parameters and Fatty Liver Hemorrhagic Syndrome in caged laying hens. Also tested in this study was the effect of force-feeding at 120% of normal intake f or experimentally producing FLHS. The first experiment was conducted with sixty hens on three diets at twenty birds per diet of Corn and soybean meal were used as the chief energy and protein sources in diet l. For diet 2, 10% of a product containing distillers dried grain (30%) with corn distillers solubles (70%) was added, and in diet 3, oats and soybean meal were used as the chief energy and protein sources. Data were recorded on production, mortality and feed consumption for each of seven periods of 28 days. The data from Experiment one showed that distillers dried grain can be used satisfactorily in layer diets. In Experiment 2, 50% of the birds on each diet were force-fed at 120% of the normal intake for a period of three weeks by the method described by Wolford and Polin (1972c). The rest continued to be fed on an ad libitum basis. The experimental data showed that force-feeding at 120% of the normal intake was satisfactory for experimentally producing FLHS. The liver lipid contents of the force-fed birds were three times as high as their normal counterparts. Egg production was reduced significantly in the force-fed birds. The ferment at ion by-product was found to have little beneficial effect in preventing FLHS. However, oats showed a significant effect in reducing liver fat content and hemorrhage, thereby preventing the disease. Gross pictures of the livers show different color variations which corresponded with their lipid content. The lesser the lipid content, the darker the color of the liver. Microscopically (both light and electron), the most discernible difference found between the fatty and normal livers was the size of the fat droplets, thereby indicating the amount of fat infiltration. The main objectives of this experiment were: (1) To measure the effect of a fermentation by-product and oats on egg production and liver parameters; and (2) To measure the effect of superimposing FLHS on the above by force-feeding at the rate of 120% of the control intake for three weeks

Intertemporal allocation of irrigation water in the Mayurakshi Project (India): an application of deterministic and chance-constrained linear programming

ThesisThesis, Iowa State University, 197

Random sampling of an AC source: A tool to teach probabilistic observations

An undergraduate level experiment is described to demonstrate the role of probabilistic observations in physics. A capacitor and a DC voltmeter are used to randomly sample an AC voltage source. The resulting probability distribution is analyzed to extract information about the AC source. Different characteristic probability distributions arising from various AC waveforms are calculated and experimentally measured. The reconstruction of the AC waveform is demonstrated from the measured probability distribution under certain restricted circumstances. The results are also compared with a simulated data sample. We propose this as a pedagogical tool to teach probabilistic measurements and their manipulations.Comment: Revtex4 file, 10 pages with 8 figure

Optimal speed of a machine in an assembly line using the continuous time Markov chain rate matrix

The optimal speed of a machine in an assembly line is determined using a Markov decision process type model. We develop the rate matrix that represents the inter-event time of a machine, either repair time or time to breakdown, as a function of speed. We consider the rate of time to breakdown with a variety of functions of speed. We find limiting probabilities and express profit in terms of these probabilities. We then find the optimal speed to maximize profit. Further, we assume an underlying function of speed and simulate data using R. From the simulated data, we estimate the parameters of the speed function, and finally estimate the optimal speed

Active power sharing and frequency regulation in inverter-based islanded microgrids subject to clock drifts, damage in power links and loss of communications

Tesi en modalitat de compendi de publicacions; hi ha diferents seccions retallades per drets de l'editorMicrogrids (MGs) are small-scale power systems containing storage elements, loads and distributed generators that are interfaced with the electric network via power electronic inverters. When an MG is in islanded mode, its dynamics are no longer dominated by the main grid. Then, inverters, driven by digital processors that may exchange data over digital communication, must act as voltage source inverters (VSIs) to take coordinated actions to ensure power quality and supply. The scope of this thesis is bounded to control strategies for active power sharing and frequency regulation in islanded MGs. The focus is on the analysis of prototype control policies when operating conditions are no longer ideal. In particular, the thesis covers the effect that a) clock drifts of digital processors, b) damage in power transmission lines, and c) failures in digital communications have in control performance. The work is submitted as a compendium of publications, including journal and international conference papers, where two main areas of research can be distinguished. The first area refers to the analysis of the effect that clock drifts have on frequency regulation and active power sharing. VSIs digital processors are equipped with oscillators, which run at not necessarily identical frequencies. As consequence, the local clocks in the physically distributed VSIs may differ. This part, reported in two conference papers and one journal paper, investigates state-of-the-art control policies when clocks of the computational devices drift. The contributions related to this part are a) the reformulation of existing control policies in terms of clock drifts, b) the steady-state analysis of these policies that offers analytical expressions to quantify the impact that drifts have on frequency and active power equilibrium points, c) the closed-loop model capable of accommodating all the policies, d) the stability analysis of the equilibrium points, and e) the experimental results. The second area copes with the analysis of the effect that electrical and communication failures have on frequency regulation and active power sharing. This investigation focuses on distributed/cooperative control policies where each inverter control action is computed using both local measures and data received from other inverters within the MG. This part, reported in one conference paper and two journal papers, investigates two control policies when the considered failures in terms of damage in power links and/or loss of communication between inverters provoke partitions within the MG. The contributions related to this part are a) the formulation of the MG as two connected graphs corresponding to the electrical and communication networks where both type of failures lead to disconnected electrical/communication sub-graphs, named partitions, that co-exist within the MG, b) the closed-loop model integrating the two graph Laplacian matrices, c) the stability analysis that identifies which type of partitions may lead to MG instability, d) the steady-state analysis that indicates how to compute the equilibrium points for the case of stable dynamics, e) a new control strategy based on switched control principles that permits avoiding the instability scenario, and f) the experimental results. For the purpose of verifying the operational performance of the analytical results, diverse experiments on a laboratory MG have been performed. The outcomes obtained are discussed and analyzed in terms of the objectives sought. Finally, conclusions and future research lines complete the thesis.Las microredes (MG) son sistemas de energía a pequeña escala que contienen elementos de almacenamiento, cargas y generadores distribuidos que están conectados con la red eléctrica a través de inversores de potencia. Cuando una MG está en modo aislado, su dinámica no está dominada por la red principal. Así, los inversores, comandados por procesadores digitales que pueden intercambiar información a través de comunicaciones digitales, deben actuar como fuentes de voltaje para ejecutar acciones coordinadas que garanticen el suministro de energía. Esta tesis se enmarca dentro de estrategias de control de última generación para compartir potencia activa y regular frecuencia en MG aisladas basadas en inversores. Su enfoque se centra en analizar estas políticas cuando las condiciones de operación no son ideales. En particular, la tesis cubre el efecto que a) desviaciones del reloj de los procesadores digitales, b) daños en las líneas de transmisión de energía, y c) fallas en las comunicaciones digitales, provocan en el rendimiento de control. El trabajo se presenta como un compendio que incluye publicaciones de revistas y de conferencias internacionales, donde se pueden distinguir dos temas principales de investigación. El primer tema comprende el análisis del efecto que tienen las desviaciones de reloj sobre la regulación de frecuencia y la compartición de potencia activa. Los procesadores de los inversores están equipados con osciladores que funcionan a frecuencias no necesariamente idénticas. Como consecuencia, los relojes locales en los inversores distribuidos físicamente, pueden diferir. Esta parte, descrita a través de dos artículos de conferencia y uno de revista, analiza el comportamiento de las políticas de control cuando los relojes de los dispositivos computacionales se desvían. Las contribuciones relacionadas con este tema son a) reformulación de las políticas de control de última generación en términos de desviaciones de reloj, b) análisis de estado estacionario de estas estrategias que ofrece expresiones analíticas para cuantificar el impacto que las desviaciones de reloj tienen sobre los puntos de equilibrio de frecuencia y potencia activa, c) modelo de lazo cerrado adaptable a todas las políticas, d) análisis de estabilidad de los puntos de equilibrio, y e) resultados experimentales. El segundo tema hace frente al análisis del efecto que las fallas eléctricas y de comunicaciones tienen sobre la regulación de frecuencia y el uso compartido de potencia activa. Esta parte se centra en políticas de control distribuido/cooperativo donde cada acción de control del inversor se calcula utilizando medidas locales y datos recibidos de otros inversores de la MG. Esta parte, descrita a través de un artículo de conferencia y dos de revista, investiga dos políticas de control cuando particiones en la MG son provocadas por daños en los enlaces de alimentación y/o por pérdida de comunicación entre inversores. Las contribuciones relacionadas con este tema son a) formulación de la MG como dos grafos correspondientes a las redes eléctrica y de comunicación donde ambos tipos de fallas conducen a sub-grafos eléctricos/comunicacionales desconectados, llamados particiones, que coexisten dentro de la MG, b) modelo de lazo cerrado que integra las matrices Laplacianas de los dos grafos, c) análisis de estabilidad que identifica las particiones que pueden conducir a inestabilidad en la MG, d) análisis de estado estacionario para calcular puntos de equilibrio cuando la dinámica es estable, e) nueva estrategia basada en principios de control conmutado para evitar el escenario de inestabilidad, y f) resultados experimentales. Con el fin de verificar el rendimiento operativo de los resultados analíticos, se han realizado diversos experimentos sobre una microred de laboratorio, los mismos que se discuten en términos de los objetivos de la tesis. El trabajo finaliza con las conclusionesPostprint (published version

Recruiting local public relations professionals for global relations practice: A comparative analysis between Australian and Indian public relations recruitment advertisements

The aim of this exploratory study was to gain an insight into Asian and Western public relations practices by investigating them through job advertisements and thus reflecting on what organisations expect from the public relations professionals. Grunig's (1984) four models of public relations and the concept of relationships management were used as the foundation for this study. Australia was used to represent the Western region and India was used to represent the Asian region. Sample sets of public relations recruitment advertisements from both countries were examined against Grunig's one-way communication, two-way communication and relationship management attributes