The overall objective of this study was to determine the implications of two programs teaching soccer training , one based on an analytical methodology , and another based on an overall methodology , declarative knowledge about football , in addition to analyzing the consequences of such programs on possible indicators of early exit from the football , based on the orientation of goals , motivation and perceived physical ability , both general and specific. The sample consisted of a total of 226 male players aged between 8 and 18 years , with a mean of 16.6 (± 2.61) years , from three grassroots football clubs , thus occupying the entire strip football training. The measuring instruments used included to assess the socio-demographic questionnaire developed by the research team consisting of 17 items features. To determine the motivation of the subjects , we administered the Spanish version of the Motivational Orientation Scale in Sport Weiss, Bredemeier and Shewchuk (1985) , Nunez , Martin-Albo , Navarro and Gonzalez (2006) , with subscales intrinsic, extrinsic motivation and amotivation , with 28 items. To measure goal orientations used the Spanish version of the questionnaire to Task Orientation and Ego , Duda and Nicholls (1989) , de Balaguer, Castillo and Thomas (1996) , with 6 items for the subscale ego and 7-item subscale for the task. To assess perceived physical ability administer the Spanish version of the Perceived Physical Ability Scale of Ryckman , Robbins, Thornton and Cantrell (1982), with two sub-scales, one which contained the original 10 scale items to measure physical ability perceived general and another with 6 items to measure the perceived Physical Ability Specific , which collected generically different technical and tactical sport gestures encompassing object of this work , based on studies Salguero, Tuero and Márquez, (2003) and previously McAuley and Gill (1983). Finally, the Assessment Questionnaire Tactical Knowledge Applied to Football (CECTAF) , was created by De la Vega (2003) for the evaluation of sport tactical 30 understanding, consists of 26 items , with four possible answers of which shall choose one Individual Tactical offensive , Individual defensive tactics , group tactics offense, defense and collective group Tactical Tactics: different game situations grouped into five factors are presented. Results revealed that the players who participated in the research were found more task-oriented than ego , more intrinsically motivated than extrinsically and values high in perceived physical ability , both general and specific , being away from indicators that suggested an premature abandonment of the practice. Similarly , we found that both methodologies , analytical and global, increased tactical awareness of the game in our players, being global which achieved greater tactical knowledge , although not significant differences. They were the youngest players and competitive category who reached higher values in goal orientation , intrinsic and extrinsic motivation and perceived phys...

Ferritic alloy steels with chromium and molybdenum, as ASTM A335 P22, are widely used in steam generators in power plants around the world and may have broken fatigue during operation. The assembly of the components of the steam generators in the field is performed by manual welding techniques and has been identified as a critical factor for the quality of these devices when some parameter is ignored during the welding process. The welded region of an alloy is influenced thermal cycle during welding, alloying elements present in the steel and weld metal increases hardenability, and thus favors the formation of bainíticas or martensitic microstructures in the welded region. In this study, a weld made according to the procedure qualified, pre-heating and post-weld relief of stress was compared with a weld treatments performed without preheating and relieving stress, and was further compared with a solder heat treatments performed without preheating and stress relief heat input and determined by the above procedure. For this, the performance of each weld was analyzed for performance in tensile tests, lateral bending (qualification requirements of ASME IX by procedure code), and testing of Charpy impact resistance and toughness of each major region of the fracture weld (base material, HAZ and weld metal). The fracture toughness of each region was determined by fracture mechanics technique of elastic-plastic fracture Crack Tip Open Displacement (CTOD) applied to ductile materials. The result of this comparative study shows that even neglecting the parameters limits of the welding procedure specified for ASTM A335 P22 with thickness of 21mm and diameter of 304.8 mm, the procedure would have passed in qualification tests established by ASME IX (tensile and lateral bending). However, the results of Charpy impact and the CTOD tests performed in weld regions showed that the weld metal had a very low tenacity than was observed in the HAZ and the base material. Thus the realization of pre-heating and postweld treatment relief produced microstructures with lower hardness but that was not reflected in an increase in the toughness of weld metal.

El trabajo minero subterráneo es una actividad de alto riesgo, por el tipo de trabajo que se realiza para la obtención del mineral, que se encuentra en el macizo rocoso. En el desarrollo de las actividades de extracción del mineral de los yacimientos subterráneos el trabajador minero se expone a peligros y riesgos significativos como: generación de gases tóxicos por la voladura con explosivos y el riesgo de asfixia por inhalación de gases tóxicos; presencia de rocas sueltas y el riesgo de aplastamiento por caída de rocas; el empleo de vehículos y equipos mineros y el riesgo de ocasionar atropello y choque; Etc. entre otros. Los peligros y riesgos mencionados continúan generando accidentes de trabajo con daños al trabajador y pérdida de vidas humanas; por lo que consideramos a estos peligros y riesgos como RIESGOS CRITICOS. El objetivo del presente proyecto es estudiar el control de los riesgos críticos, mediante el uso de las herramientas de gestión de seguridad y salud ocupacional; dando cumplimiento con lo dispuesto en las leyes, decretos supremos y reglamentos de seguridad industrial y salud ocupacional. El presente proyecto, pretende demostrar que es viable prevenir, reducir y controlar los accidentes de trabajo en la actividad minera gestionando los riesgos críticos, mediante el uso de las herramientas de gestión. Esta investigación se desarrolló en la Unidad Minera de Atacocha entre los años 2010 a 2015. La metodología utilizada para llevar a cabo este estudio fue diseño experimental del tipo experimento verdadero, con un análisis de los problemas existentes, evaluando el costo/beneficio y proponiendo la gestión de los riesgos críticos en la actividad minera; procurando el cambio de actitud del trabajador y del supervisor involucrado en la tarea, mediante el autocuidado y una cultura preventiva de riesgos para controlar los accidentes de trabajo.

O mercado financeiro possui diversos tipos de operadores buscando lucros com diferentes focos de atuação. Temos, por exemplo, especuladores tentando prever futuras variações nos ativos, ou bancos provendo liquidez para as demandas das empresas. De qualquer maneira, cada ativo financeiro normalmente contém diversos riscos de mercado na sua precificação. Além disso, muitos desses riscos são, na verdade, indesejáveis, fazendo com que seja necessário buscar proteção contra eles, utilizando-se de outros ativos. Assim, numa carteira com diversos produtos, é vital para sua administração a divisão por fator específico de risco de mercado. O objetivo deste trabalho consiste em resolver uma demanda real de uma gestora de recursos onde o autor atuou: desenvolver uma ferramenta capaz de calcular os ganhos ou perdas de uma carteira de ativos, detalhando o resultado por tipo de risco de mercado. Para isso foi desenvolvido um sistema no formato de add-in de Excel no qual é possível definir as diversas curvas de mercado para diferentes datas, assim como calcular o valor presente dos ativos. Com isso, é também possível determinar o valor total do portfolio e a variação de um dia para o outro, conhecido como PNL diário. Nesta dissertação serão mostrados detalhes da implementação do sistema e será proposta uma metodologia para calcular o PNL por cada risco de mercado. O trabalho também apresentará o racional por trás da escolha de cada método, e também discutirá como eles poderiam ser refinados. Palavras-chave: Ativos do mercado financeiro brasileiro, Resultado por fator de risco, Gerindo um portfolio.