Validation of the Scale of Emotional States in the Physical Education Context

The purpose of the present study was to validate an instrument of student emotional experiences in the Spanish Physical Education context. The sample of participants consisted of 864 secondary education students from various educational institutions of Spain who ranged in age from 13 to 19 years. To assess the psychometric properties of the Scale of Emotions in Physical Education (SEPE), various types of analyses were conducted. The factor structure of the SEPE was examined through confirmatory factorial analysis in relation to two models. In the first model, it was proposed that the eight first order factors, which represented the eight emotional states, would be correlated amongst each other. In the second model, an eight-factor model with two higher order factors was proposed, with these higher order factors representing distinct sets of positive and negative emotions. The results provide support the presence of an eight-factor second order model which consisted of sets of four positive emotions and four negative emotions. These results provide evidence for the reliability and validity of the SEPE within the Spanish Physical Education context

Adaptation and Validation of the Mind-Wandering Questionnaire (MWQ) in Physical Education Classes and Analysis of Its Role as Mediator between Teacher and Anxiety

Physical education (PE) classes are one of the primary means of adopting healthy lifestyles and contribute greatly to personal well-being. However, it is necessary that students pay attention and do not enter a mind-wandering state as this can be negative for the purposes of PE classes. Therefore, we adapted and validated the Mind-Wandering Questionnaire (MWQ) to the Spanish PE context and analyzed the influence of the teacher on this new variable. Two independent samples of high school students between the ages of 13 and 19 participated in the study. In order to assess the psychometric properties of the MWQ, various analyses were carried out. The results of the confirmatory factorial analysis (CFA) provided support for the structure of the questionnaire. The structure of the model was gender-invariant. The Cronbach alpha value was higher than 0.70 and showed an adequate level of temporal stability. In addition, we present a second study in which high school students between the ages of 13 and 19 participated, and which are independent of the first study. The analyses in this study were mainly based on structural equation modelling, and demonstrated the teacher’s influence on mind-wandering and showed that mind-wandering acted as a predictor of anxiety in high school students. The results of this study provided evidence of the reliability and validity of the MWQ in the Spanish PE context

Las emociones en el arte retórica de Aristóteles. Πάθος, τέχνη y πείθω

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Filosofía y Letras, Departamento de Filosofía. Fecha de lectura: 18-01-201

Valoración de Empresas: el caso de Applus Services, S.A.

El trabajo a presentar tiene como objeto estudiar los diferentes métodos existentes a al hora de valorar una empresa de manera cuantitativa. Durante el trabajo se expondrá los procedimientos usados en cada uno de ellos, con especial énfasis en el método de los flujos descontados de caja, al ser este el método más relevante en la actualidad según la opinión de los diferentes expertos y autores en esta materia. De entre todos los métodos posibles que se desarrollaran durante el trabajo, prestaremos una mayor atención en el descuento de flujos de caja, al ser un método más correcto en términos conceptuales por los diferentes expertos. Para un mayor entendimiento del tema a abordar, se llevará a cabo una valo- ración practica del contenido propuesto que permita un mejor entendimiento sobre el tema.Departamento de Economía Financiera y ContabilidadGrado en Administración y Dirección de Empresa

Interacciones y magneto-óptica en el difractado en redes de nanoelementos magnéticos

Tesis doctoral inédita, leída en la Universidad Autónoma de Madrid. Facultad de Ciencias. Departamento de Física Teórica del Estado Sólido. Fecha de lectura: 19-01-200

Factores asociados con el tiempo de llegada al Hospital Nacional Daniel Alcides Carrión de pacientes con accidente cerebro vascular isquémico agudo durante diciembre 2012 a febrero 2013

Publicación a texto completo no autorizada por el autorManifiesta que las enfermedades cerebrovasculares son causa importante de morbimortalidad mundial, la eficacia del tratamiento trombolítico del ACV isquémico agudo, depende de una intervención temprana, es decir es tiempo dependiente. Identificar los factores relacionados con la demora en el tiempo de llegada al hospital, permitirá realizar acciones específicas con la finalidad de reducir el tiempo en el inicio del tratamiento. El estudio se realizó en el Hospital Nacional Daniel Alcides Carrión mediante una entrevista y aplicación de un cuestionario al paciente y/o su acompañante, de los pacientes con diagnóstico de ACV isquémico, del Servicio de Neurología de este hospital, desde el 1° de diciembre del año 2012 hasta el 28 de febrero del año 2013. Ser del sexo masculino se encontró como factor causal de demora (OR=9.00). No tener una percepción de la importancia del problema de salud, así como no tomar una decisión oportuna para buscar ayuda también fueron encontrados como factores causales de demora (OR=22.177 y 72.429 respectivamente). Se concluye que la implementación de planes dirigidos a educar a la población es sumamente necesaria, con la finalidad de cambiar actitudes ante la presentación de un ACV, y así poder lograr un real beneficio con el tratamiento trombolítico de esta patología.Trabajo académic

Colaboração científica: indicadores de coautoria e subautoria em periódicos indexados na SciELO

Different types of collaboration (formal e informal) are necessary in the scientific activity of different disciplines and areas. Through scientometric indicators, it broadly analyzes contemporary collaborative practices (co-authorship and sub-authorship) in publications of two important Brazilian journals indexed at SciELO, one from Biological Sciences and other from Human Sciences, during the period of 2010 to 2019. The data on co-authorship were collected from papers signed by more than one author, and the data on sub-authorship were collected from publications acknowledgment texts (for material and/or intellectual support) written by the authors. The corpus is composed of 1,100 papers, 758 from Acta Botanica Brasilica and 342 from Revista de Sociologia e Política. It found out that scientific communication context (nationality of the journal and of the indexing database) does not directly influence the collaborative practices, but what does influence is the nature of the research performed in each of the disciplines and areas. High percentages of co-authorship and sub-authorship (financial and technical/instrumental support) identified in Acta Botanica Brasilica evidence the need for different types of collaboration (formal e informal) in experimental areas. The high percentage of acknowledgment for conceptual/PIC support identified in Revista de Sociologia e Política, whose co-authorship rates are lower than those of single authorship, shows the importance of authorship collaboration from invisible colleges. It concludes that the inclusion of databases such as SciELO in scientometric researches is relevant for mapping types of collaboration (authorial and non-authorial) in science from a broadly and different perspective.Diferentes tipos de colaboração (formal e informal) são requeridos na atividade científica das diversas disciplinas e áreas. Por meio de indicadores cientométricos, analisaram-se, de forma mais abrangente, práticas colaborativas (coautorias e subautorias) contemporâneas nas publicações de dois importantes periódicos brasileiros indexados na SciELO, um das Ciências Biológicas e outro das Ciências Humanas, ao longo do período de 2010-2019. Os dados sobre coautoria foram coletados através dos artigos assinados por mais de um autor e sobre subautoria através dos textos de agradecimentos (por apoio material e/ou intelectual) inseridos pelos autores nas publicações. O corpus é constituído por 1.100 artigos, 758 da Acta Botanica Brasilica e 342 da Revista de Sociologia e Política. Verificou-se que, o contexto de comunicação científica (nacionalidade do periódico e da base de dados indexadora) não tem influência direta nas práticas colaborativas, mas sim a orientação da pesquisa realizada em cada uma das disciplinas e áreas. Altos percentuais de coautorias e subautorias (apoio financeiro e técnico/instrumental) identificados na Acta Botanica Brasilica evidenciam a necessidade de diferentes tipos de colaboração (formal e informal) nas áreas experimentais. Os altos percentuais de agradecimentos por apoio conceitual/peer interactive communication identificados na Revista de Sociologia e Política, cujos índices de coautoria são mais baixos do que os índices de autoria única, revelam a importância da colaboração de subautoria dos colégios invisíveis. Conclui que, a inclusão de bases de dados como a SciELO em pesquisas cientométricas é relevante para mapear, desde outro ângulo e, de forma mais abrangente, tipos de colaboração (autorais e não-autorais) na ciência

The Influence of the Social Context on Motivation towards the Practice of Physical Activity and the Intention to be Physically Active

According toWHOdata, only around 20% of adolescents participate in physical activity (PA) during their free time. The social context can act as a support for adolescents to do PA, given the e ect that both parents, friends and teachers have on young people’s behaviour owing to the large amount of time and influence they have on them. Therefore, the aim of this study is to analyse the role of the social context on adolescents’ motivation to practise PA and their intention to be physically active. This study involved the participation of students in compulsory and post-compulsory secondary education. Several statistical analyses were performed, including three confirmatory factorial analyses of the scales and a structural equations model that explains the causal relationships between the variables. The results showed how support for autonomy in the social context positively predicts autonomous motivation, whereas the psychological control of the social context negatively predicts it. Autonomous motivation positively predicted intent, attitude, behavioural control and subjective norms, and consequently, the practice of physical activity. In short, the study showed how the three validated scales have adequate goodness-of-fit indices while the structural equations model demonstrated the influence of the social context on the student’s motivational processes and the adoption of active life habits

Integer programming models for the pre-marshalling problem

[EN] The performance of shipping companies greatly depends on reduced berthing times. The trend towards bigger ships and shorter berthing times places severe stress on container terminals, which cannot simply increase the available cranes indefinitely. Therefore, the focus is on optimizing existing resources. An effective way of speeding up the loading/unloading operations of ships at the container terminal is to use the idle time before the arrival of a ship for sorting the stored containers in advance. The pre-marshalling problem consists in rearranging the containers placed in a bay in the order in which they will be required later, looking for a sequence with the minimum number of moves. With sorted bays, loading/unloading operations are significantly faster, as there is no longer a need to make unproductive moves in the bays once ships are berthed. In this paper, we address the pre-marshalling problem by developing and testing integer linear programming models. Two alternative families of models are proposed, as well as an iterative solution procedure that does not depend on a difficult to obtain upper bound. An extensive computational analysis has been carried out over several well-known datasets from the literature. This analysis has allowed us to test the performance of the models, and to conclude that the performance of the best proposed model is superior to that of previously published alternatives.This study has been partially supported by the Spanish Ministry of Education, Culture, and Sport, FPU Grant A-2015-12849 and by the Spanish Ministry of Economy and Competitiveness, under projects DPI2014-53665-P and DPI2015-65895-R, partially financed with FEDER funds.Parreño-Torres, C.; Alvarez-Valdes, R.; Ruiz García, R. (2019). Integer programming models for the pre-marshalling problem. European Journal of Operational Research. 274(1):142-154. https://doi.org/10.1016/j.ejor.2018.09.048S142154274

La Reina Velasquita, nieta de Mumiadomna Diaz?.

70 (1-2) Jan.-Jun. 1960, p. 197-230