A CSP model for simple non-reversible and parallel repair plans

Thiswork presents a constraint satisfaction problem (CSP) model for the planning and scheduling of disassembly and assembly tasks when repairing or substituting faulty parts. The problem involves not only the ordering of assembly and disassembly tasks, but also the selection of them from a set of alternatives. The goal of the plan is the minimization of the total repairing time, and the model considers, apart from the durations and resources used for the assembly and disassembly tasks, the necessary delays due to the change of configuration in the machines, and to the transportation of intermediate subassemblies between different machines. The problem considers that sub-assemblies that do not contain the faulty part are nor further disassembled, but allows non-reversible and parallel repair plans. The set of all feasible repair plans are represented by an extended And/Or graph. This extended representation embodies all of the constraints of the problem, such as temporal and resource constraints and those related to the selection of tasks for obtaining a correct plan.Ministerio de Educación y Ciencia DIP2006-15476-C02-0

Bayesian Approach to Toolmark Analysis

Statistical analysis of toolmarks using frequentist methods can be problematic for assorted reasons. Thus, in order to analyze toolmarks whilst avoiding these issues, a Bayesian approach is taken. Specifically for this thesis we discuss the computation of a specific Likelihood Ratio for toolmark comparisons. This Bayesian based approach involves using data already at hand in conjunction with a probability model in order to establish an estimate for its “value”, i.e. the “weight of evidence”. Making the calculations to obtain a Likelihood Ratio is very cumbersome and time consuming. Also many commercial software packages hide the process and underlying assumptions that go into its calculation. Using the open-source software called R , we developed a package that, after the toolmark data is entered, a Likelihood Ratio for it is estimated. Ideally, using open-source software and having the code publicly available, collaboration on refining the overall estimation process can start and hopefully reach consensus

Tuba, a novel protein containing bin/amphiphysin/Rvs and Dbl homology domains, links dynamin to regulation of the actin cytoskeleton

Tuba is a novel scaffold protein that functions to bring together dynamin with components of the actin cytoskeleton. It is concentrated at synapses in brain and binds dynamin selectively through four N-terminal Src homology-3 (SH3) domains. Tuba binds a variety of actin regulatory proteins, including N-WASP, CR16, WAVE1, WIRE, PIR121, NAP1, and Ena/VASP proteins, via a C-terminal SH3 domain. Direct binding partners include N-WASP and Ena/VASP proteins. Forced targeting of the C-terminal SH3 domain to the mitochondrial surface can promote accumulation of F-actin around mitochondria. A Dbl homology domain present in the middle of Tuba upstream of a Bin/amphiphysin/Rvs (BAR) domain activates Cdc42, but not Rac and Rho, and may thus cooperate with the C terminus of the protein in regulating actin assembly. The BAR domain, a lipid-binding module which also generates curvature in lipid membranes, may functionally replace the pleckstrin homology domain that typically follows a Dbl homology domain. The properties of Tuba provide new evidence for a close functional link between dynamin, Rho GTPase signaling, and the actin cytoskeleton

Ojeada militar sobre la parte de la península española correspondiente a la Capitania General de Castilla la Vieja

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201

AYAMONTE (Huelva). Mapas generales (1811). 1:55.000

Presenta el plano de la ciudad de AyamonteManuscrito firmado y rubricado por el autorOrientado con flechaRelieve representado por sombreadoNotas sobre la distancia existente entre dos puntos del mapa y el lugar hasta donde es navegable el rí

Simulaciones del transporte de iones en un Tokamak y aplicación ASCOT al MAST-U (Reino Unido)

El transporte de iones rápidos (aquellos que tienen una energía superior a la energía del plasma térmico) es de suma importancia en reactores de fusión por confinamiento magnético, pues tiene implicaciones directas sobre el calentamiento del plasma y la inducción de corriente en el mismo, necesaria para la estabilidad dinámica del sistema. De hecho, uno de los métodos de calentamiento más utilizados y desarrollados en estos dispositivos es la inyección de haz de neutrales (NBI, Neutral Beam Injection), que genera una distribución de iones rápidos en el seno del plasma para que estos le transfieran progresivamente su energía. Sin embargo, la mayor energía de los iones rápidos provoca una cierta tendencia a escapar del confinamiento magnético, lo cual da lugar a pérdidas por colisión con la pared interna de la cámara de vacío del reactor, poniendo en peligro su integridad material y mermando el rendimiento operativo. Este efecto motiva la gran importancia que tiene un buen confinamiento de los iones rápidos en el correcto funcionamiento del reactor. Por tanto, el enfoque principal del trabajo es realizar un análisis de sensibilidad de la inyección NBI y el transporte de iones aplicado a un tokamak (reactor toroidal basado en el confinamiento magnético mediante líneas de campo cerradas), a través de un conjunto de simulaciones variando los parámetros geométricos del inyector y las condiciones iniciales de los iones rápidos generados. En aras de apoyar el diseño y optimización de la inyección NBI en el tokamak SMART de la US, y con el fin de producir una serie de resultados que sirvan de referencia en dicha tarea, este análisis se aplicará al tokamak MAST-U. Este dispositivo es una mejora reciente del tokamak esférico MAST, uno de los reactores experimentales más grandes de este tipo y, asimismo, uno de los más prometedores en la demostración de ideas innovadoras y del potencial de la configuración esférica para su uso futuro en reactores de fusión operativos. El flujo del trabajo principal será el siguiente: en primer lugar, se implementarán las características reales de MAST-U y sus inyectores NBI para simular la inyección utilizando el código BBNBI (Beamlet-Based NBI-model) y, posteriormente, seguir el conjunto de órbitas de los iones rápidos generados mediante el código ASCOT (Accelerated Simulation of Charged particle Orbits in Toroidal devices), registrando las colisiones con la pared. Ambos códigos, por su alta complejidad y coste computacional, han de ser ejecutados en un supercomputador, siendo utilizados en nuestro caso los recursos de MARCONI en Italia. Tras analizar los resultados del estudio de sensibilidad respecto a los parámetros de inyección del NBI, se tomarán las propiedades de iones representativos para simular las órbitas individuales y analizar su topología y su forma en función de las condiciones iniciales. De forma previa al trabajo en ASCOT, se elaborará un modelo aproximado del campo magnético de MAST-U para implementarlo en un código de MATLAB que será capaz de calcular las órbitas individuales de los iones. Ajustando los parámetros del campo magnético y de las propias partículas para equipararlos al estudio realizado en ASCOT, se realizará el mismo tipo estudio de sensibilidad a las condiciones iniciales, comparándolo con el anterior.Universidad de Sevilla. Grado en Ingeniería Aeroespacial

Superplastic Behavior of a Fine Grained AZ61 Alloy Processed by Large Strain Hot Rolling

A processing route based on conventional hot rolling has been recently developed to induce significant grain refinement in Mg alloys. The simplicity and rapidity of the processing route as well as the fact that conventional rolling is used, may allow it to be put into practice successfully in industry. This method consists of only two to three rolling passes, each producing a large thickness reduction, and intermediate annealings of 5 minutes duration. The resulting microstructure is mainly formed by very fine grains. Tensile tests at different temperatures and strain rates were performed in order to analyse the mechanical behaviour of the processed AZ61 alloy under different testing conditions. Microstructure and texture evolution during deformation were examined by optical microscopy (OM) and X-ray diffraction, respectively. It is shown that the microstructures developed by large strain hot rolling are capable of exhibiting significant superplastic elongations at moderate to low temperatures. Stress exponents close to 2 were measured during deformation under optimum superplastic conditions. Additionally, grains remained equiaxed and a significant decrease in the texture intensity is observed. This is consistent with the predominance of grain boundary sliding as the main deformation mechanism responsible for superplasticityCICYT grant MAT2000-1313 is appreciated. MTP acknowledges a Ramón y Cajal 2001 contract, awarded by the Spanish Ministry of Science and Technology. JAV is thankful to CONICETPeer reviewe

Co-Rh modified natural zeolites as new catalytic materials to oxidize propane and naphthalene from emission sources

Natural zeolites as a raw material to prepare catalytic precursors for the oxidation reaction of linear and poly-aromatic hydrocarbons are reported in this work. The process consisted in the formation of mono- and bi-metallic species containing Co and Co-Rh on natural zeolite tuffs. The materials are analyzed by different physicochemical techniques and used as catalysts for propane and naphthalene oxidation in emissions sources. Comparatively, Rh-zeolites are the most active catalysts for propane conversion. In this case, the formation of mixed oxides seems to be conditioned by surface properties. It could also be suggested that the Rh incorporation on a non-active phase in bimetallic catalysts impacts the effectiveness of the system. In addition, the NO presence increases the activity of bimetallic materials. Rh-Co zeolite systems markedly influence the naphthalene combustion temperature. Whereas in the absence of a catalyst a conversion rate of 50% and 100% is reached at 430 C and 485 °C, respectively. It is interesting to observe that for RhCoCli-Mor and RhCoCli catalyst the 100% conversion is reached at 250 °C.Fil: Leguizamón Aparicio, María Silvia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Canafoglia, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Química Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaFil: Ocsachoque, Marco Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Lick, Ileana Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Botto, Irma Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Química Inorgánica ; Argentin

MERCADOTECNIA

ES RELEVANTE EL USO DE LA MERCADPTECNIA COMO PILAR FUNDAMENTAL PARA INCREMENTAR LA COMPETITIVIDAD EN INSTITUCIONES EDUCATIVAS DE NIVEL SUPERIORESTE CAPITULO DETALLA COMO LA MERCADOTECNIA SIRVE PARA LA COMERCIALIZACIÓN DE LAS INSTITUCIONES EDUCATIVAS, Y QUE PERMITA INCREMENTAR SU COMPETITIVIDADNINGUN

Mental health stigma in Spanish university students

Knowledge about mental health problems and previous contact are key variables in the fight against stigma. The aims of the study were: (1) to explore the level of stigma associated with mental disorders in students of different university degrees, and (2) to analyze the evolution of stigma in psychology students. Two groups completed the Attribution Questionnaire (AQ-27). Group 1 consisted of 392 first-year students of the different degrees evaluated (Mage= 18.59 years, SD= 1.29, 60% female), and group 2 consisted of 152 third-year Psychology undergraduates (Mage= 24.35 years, SD= 8.97, 73.4% female). Group 1 students with previous contact with mental disorders showed fewer stigmatizing attitudes. Differences were observed according to grade level. Group 2 showed lower levels of stigma throughout the academic year. The results support the effectiveness that mental health education and awareness-raising interventions through contact with people with mental health problems can have in reducing stigma