Revisión sistemática del amor romántico y la violencia de pareja en adolescentes y jóvenes

La presente investigación plantea como objetivo revisar, los estudios del amor romántico y la violencia de pareja en adolescentes y jóvenes, según los artículos científicos identificados a nivel internacional. La metodología utilizada corresponde a una investigación de tipo teórica y a un diseño de revisión sistemática, empleando, para la recolección de datos, la tabla matriz y la lista de cotejo. Las bases de datos que se utilizaron fueron Science Direct, Redalyc, Dialnet y Scielo, empleando los siguientes términos de búsqueda: “amor romántico, “violencia”, “pareja”, “amor” “violencia de pareja” y “mitos”. Luego de la búsqueda se obtuvieron 26 artículos, de los cuales 15 fueron seleccionados para el análisis. Los resultados muestran que las creencias idealizadas del amor romántico subsisten entre los adolescentes y jóvenes, siendo las de mayor prevalencia: la omnipotencia del amor, la pasión eterna y la media naranja. De igual manera, se identifica que existe una alta prevalencia de violencia de pareja, donde el tipo de agresión con más porcentaje es la psicológica. Con respecto a los modelos teóricos en los que se basa las investigaciones, la variable del amor romántico, en su mayoría, se fundamenta bajo el modelo socio cultural, seguido, en menor grado, por la teoría del amor de Lee; en cuanto a los estudios de violencia de pareja, sus bases teóricas son la teoría del aprendizaje social y, en menor proporción, la teoría psicológica

El concepto de diferenciación como propuesta de análisis en el pensamiento sociológico: Una aproximación desde G. Simmel y N. Luhmann

Systemic differentiation implies that each of the subsystems that make up a macrosystem have their own internal logic and are governed by specific rules and operations.La diferenciación sistémica implica que cada uno los subsistemas que forman un macrosistema tienen su propia lógica interna y se rigen por reglas y operaciones específicas. A diferenciação sistêmica implica que cada um dos subsistemas que compõem um macrossistema tem sua própria lógica interna e são regidos por regras e operações específicas.&nbsp

An MDA approach for developing secure OLAP applications: Metamodels and transformations

Decision makers query enterprise information stored in DataWarehouses (DW) by using tools (such as On-Line Analytical Processing (OLAP) tools) which employ specific views or cubes from the corporate DW or Data Marts, based on multidimensional modelling. Since the information managed is critical, security constraints have to be correctly established in order to avoid unauthorized access. In previous work we defined a Model-Driven based approach for developing a secure DW repository by following a relational approach. Nevertheless, it is also important to define security constraints in the metadata layer that connects the DW repository with the OLAP tools; that is, over the same multidimensional structures that end users manage. This paper incorporates a proposal for developing secure OLAP applications within our previous approach: it improves a UML profile for conceptual modelling; it defines a logical metamodel for OLAP applications; and it defines and implements transformations from conceptual to logical models, as well as from logical models to secure implementation in a specific OLAP tool (SQL Server Analysis Services). © 2015 ComSIS Consortium. All rights reserved.This research is part of the following projects: SIGMA-CC (TIN2012-36904), GEODAS-BC (TIN2012-37493-C01) and GEODAS-BI (TIN2012-37493-C03) funded by the Ministerio de Economía y Competitividad and Fondo Europeo de Desarrollo Regional FEDER

An architecture for automatically developing secure OLAP applications from models

Context: Decision makers query enterprise information stored in Data Warehouses (DW) by using tools (such as On-Line Analytical Processing (OLAP) tools) which use specific views or cubes from the corporate DW or Data Marts, based on the multidimensional modeling. Since the information managed is critical, security constraints have to be correctly established in order to avoid unauthorized accesses. Objective: In previous work we have defined a Model-Driven based approach for developing a secure DWs repository by following a relational approach. Nevertheless, is also important to define security constraints in the metadata layer that connects the DWs repository with the OLAP tools, that is, over the same multidimensional structures that final users manage. This paper defines a proposal to develop secure OLAP applications and incorporates it into our previous approach. Method: Our proposal is composed of models and transformations. Our models have been defined using the extension capabilities from UML (conceptual model) and extending the OLAP package of CWM with security (logical model). Transformations have been defined by using a graphical notation and implemented into QVT and MOFScript. Finally, this proposal has been evaluated through case studies. Results: A complete MDA architecture for developing secure OLAP applications. The main contributions of this paper are: improvement of a UML profile for conceptual modeling; definition of a logical metamodel for OLAP applications; and definition and implementation of transformations from conceptual to logical models, and from logical models to the secure implementation into a specific OLAP tool (SSAS). Conclusion: Our proposal allows us to develop secure OLAP applications, providing a complete MDA architecture composed of several security models and automatic transformations towards the final secure implementation. Security aspects are early identified and fitted into a most robust solution that provides us a better information assurance and a saving of time in maintenance.This research is part of the following Projects: SIGMA-CC (TIN2012-36904), GEODAS-BC (TIN2012-37493-C01) and GEODAS-BI (TIN2012-37493-C03) funded by the Ministerio de Economía y Competitividad and Fondo Europeo de Desarrollo Regional FEDER. SERENIDAD (PEII11-037-7035) and MOTERO (PEII11- 0399-9449) funded by the Consejería de Educación, Ciencia y Cultura de la Junta de Comunidades de Castilla La Mancha, and Fondo Europeo de Desarrollo Regional FEDER

Showing the Benefits of Applying a Model Driven Architecture for Developing Secure OLAP Applications

Data Warehouses (DW) manage enterprise information that is queried for decision making purposes by using On-Line Analytical Processing (OLAP) tools. The establishment of security constraints in all development stages and operations of the DW is highly important since otherwise, unauthorized users may discover vital business information. The final users of OLAP tools access and analyze the information from the corporate DW by using specific views or cubes based on the multidimensional modelling containing the facts and dimensions (with the corresponding classification hierarchies) that a decision maker or group of decision makers are interested in. Thus, it is important that security constraints will be also established over this metadata layer that connects the DW's repository with the decision makers, that is, directly over the multidimensional structures that final users manage. In doing so, we will not have to define specific security constraints for every particular user, thereby reducing the developing time and costs for secure OLAP applications. In order to achieve this goal, a model driven architecture to automatically develop secure OLAP applications from models has been defined. This paper shows the benefits of this architecture by applying it to a case study in which an OLAP application for an airport DW is automatically developed from models. The architecture is composed of: (1) the secure conceptual modelling by using a UML profile; (2) the secure logical modelling for OLAP applications by using an extension of CWM; (3) the secure implementation into a specific OLAP tool, SQL Server Analysis Services (SSAS); and (4) the transformations needed to automatically generate logical models from conceptual models and the final secure implementation.This research is part of the following projects: SERENIDAD (PEII11- 037-7035) financed by the ”Viceconsejería de Ciencia y Tecnología de la Junta de Comunidades de Castilla-La Mancha” (Spain) and FEDER, and SIGMA-CC (TIN2012-36904) and GEODAS (TIN2012-37493-C03-01) financed by the ”Ministerio de Economía y Competitividad” (Spain)

Progressões na compreensão de concepções pedagógicas em professores em formação avançada

Objective. This study aims to identify the differences in the thinking paths used to appropriate pedagogical concepts by students with or without initial university education. These paths were implemented in a course on teaching comprehension (TFC) in the Master’s Degree in Pedagogy program at a Colombian university. Methodology. This qualitative research was conducted through surveys, field journals, and thinking routines administered to fifty-eight students across three cohorts (2013-2014) enrolled in the Master’s degree in pedagogy. They participated in the TFC contest. Results. The study found differences in the paths to building pedagogical concepts (teaching, learning, didactics, evaluation, comprehension and research in the classroom) between those who obtain the master’s degree with previous formation in education and those who do not have such formation. Conclusions. Knowledge of these differences constitutes a contribution to the design of advanced teacher training programs. On the other hand, the thinking paths are based on theoretical and practical reflections on the student and the teacher-learner relationship.Objetivo. Determinar las diferencias que existen en las trayectorias de pensamiento para la apropiación de conceptos pedagógicos entre el estudiantado con formación universitaria inicial en educación y aquellos grupos que no la tienen, desarrolladas en un curso de Enseñanza para la Comprensión (EpC) de la Maestría en Pedagogía de una universidad colombiana. Metodología. La investigación cualitativa se realizó a través de cuestionarios, diarios de campo y rutinas de pensamiento. Estos se aplicaron a 58 estudiantes de la Maestría en Pedagogía pertenecientes a tres cohortes (2013-2014), quienes participaron en el curso de EpC. Resultados. Existen diferencias en las trayectorias de construcción de conceptos pedagógicos (enseñanza, aprendizaje, didáctica, comprensión, evaluación e investigación en el aula) de quienes llegan a la maestría con formación previa en educación y quienes llegan sin ella. Conclusiones. El conocimiento de estas diferencias se constituye en un aporte para el diseño de programas de formación avanzada del profesorado. De otra parte, las trayectorias de pensamiento se fundamentan en la reflexión teórica, práctica, sobre el estudiantado y la relación profesorado-grupo aprendiz.Objetivo. Determinar as diferenças que existem nas trajetórias de pensamento para a apropriação de conceitos pedagógicos entre estudantes com formação universitária inicial em educação e aqueles que não possuem essa formação. Essas trajetórias são desenvolvidas num curso de Ensino para a Compreensão (EpC) do Mestrado em Pedagogia de uma universidade colombiana. Metodologia. Foi realizada uma pesquisa qualitativa por meio de questionários, diários de campo e rotinas de pensamento. Esses foram aplicados a 58 estudantes do Mestrado em Pedagogia pertencentes a três coortes (2013-2014), que participaram do curso EpC. Resultados. Foram identificadas diferenças nas trajetórias de construção de conceitos pedagógicos (ensino, aprendizagem, didática, avaliação, compreensão e pesquisa em sala de aula) entre aqueles que chegam ao mestrado com formação prévia em educação e aqueles que não possuem tal formação. Conclusões. O conhecimento dessas diferenças constitui um contributo para a concepção de programas de formação avançada de professores. Por outro lado, as trajetórias de pensamento são baseadas numa reflexão teórica e prática sobre o estudante e a relação professor-estudante

Climatic diversity and ecological descriptors of wild tomato species (Solanum sect. lycopersicon) and close related species (solanum sect. juglandifolia y sect. lycopersicoides) in Latin America

Conservation and sustainable use of species diversity require a description of the environment where they develop. The objectives were to determine ecological descriptors and climatic diversity of areas along the distribution range of 12 species of wild tomatoes (Solanum sect. Lycopersicon) and four wild species of phylogenetically related groups (Solanum sect. Juglandifolia and sect. Lycopersicoides), as well as their ecological similarity in Latin America. With 4228 selected tomato accessions and an environmental information system (EIS) composed of 21 climatic variables, diversity patterns of the distribution areas were identified for each species, as well as ecological descriptors through the use of geographic information systems (GIS). The contribution of climatic variables to the species geographical distribution was identified by principal component analysis (PCA), and similarity in species distribution as a function of the variables identified with cluster analysis (CA). Climatic characteristics and the environmental amplitude of wild tomatoes and related species along their distributional range were satisfactorily determined by ecological descriptors. Eleven climate types were identified, predominantly BSk (arid, steppe, cold), BWh (arid, desert, hot), and Cfb (temperate, no dry season, warm summer). PCA determined 10 most important variables were the most important for the geographical distribution. Six groups of species were identified according to CA and climatic distribution similarity. This approach has shown promissory applications for biodiversity conservation of valuable genetic resources for tomato crop breeding.Fil: Ramírez Ojeda, Gabriela. Universidad Autónoma de Chapingo; MéxicoFil: Peralta, Iris Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; ArgentinaFil: Rodríguez Guzmán, Eduardo. Universidad de Guadalajara; MéxicoFil: Chávez Servia, José Luis. Instituto Politécnico Nacional; MéxicoFil: Sahagún Castellanos, Jaime. Universidad Autónoma de Chapingo; MéxicoFil: Rodríguez Pérez, Juan Enrique. Universidad Autónoma de Chapingo; Méxic

A Volterra model of the greenhouse temperature using natural ventilation

Model-based control techniques are commonly applied to control the greenhouse climate. As well-known, these techniques require accurate models for adequate results. Several first-principle models have been developed for the greenhouse climate control problem considering all the physical and physiological processes. However, these models are too complex to be used for control purposes. On the other hand, empirical models based on input/output real data allow to obtain better results and less complex model structures. In the Mediterranean areas the main problem is cooling the greenhouse and this leads to natural ventilation as a standard tool. This paper presents the development and the results of a Volterra model for the greenhouse temperature including the crop effect and using natural ventilation.Ministerio de Ciencia y Tecnología DPI2004-07444-C04-01/04Ministerio de Ciencia y Tecnología DPI2007-66718-C04- 01/0

Integrating curriculum-based dynamic assessment in computerized adaptive testing: Development and predictive validity of the EDPL-BAI battery on reading competence

In recent decades, there have been significant changes in the conceptualization of reading as well as in the perception of how this activity should be assessed. Interest in the analysis of reading processes has led to the emergence of new explanatory models based primarily on the contributions of cognitive psychology. In parallel, there have been notable advances in measurement procedures, especially in models based on Item Response Theory (IRT), as well as in the capacity and performance of specific software programs that allow data to be managed and analyzed. These changes have contributed significantly to the rise of testing procedures such as computerized adaptive tests (CATs), whose fundamental characteristic is that the sequence of items presented in the tests is adapted to the level of competence that the subject manifests. Likewise, the incorporation of elements of dynamic assessment (DA) as the prompts are gradually offered allows for obtaining information about the type and degree of support required to optimize the subject’s performance. In this sense, the confluence of contributions from DA and CATs offers a new possibility for approaching the assessment of learning processes. In this article, we present a longitudinal research developed in two phases, through which a computerized dynamic adaptive assessment battery of reading processes (EDPL-BAI) was configured. The research frame involved 1,831 students (46% girls) from 13 public schools in three regions of Chile. The purpose of this study was to analyze the differential contribution on reading competence of dynamic scores obtained in a subsample composed of 324 (47% girls) students from third to sixth grade after the implementation of a set of adaptive dynamic tests of morpho-syntactic processes. The results achieved in the structural equation modeling indicate a good global fit. Individual relationships show a significant contribution of calibrated score that reflects estimated knowledge level on reading competence, as well as dynamic scores based on the assigned value of graduated prompts required by the students. These results showed significant predictive values on reading competence and incremental validity in relation to predictions made by static criterion tests

Sistema de gestión de recursos humanos para obtener un mayor rendimiento y mejorar las funciones del personal de la unidad de Bienestar Universitario de la Universidad de El Salvador.

El Sistema de Gestión de Recursos Humanos tiene como objetivo contribuir a mejorar el servicio y la imagen de Bienestar Universitario de la Universidad de El Salvador sede central, y formar una herramienta que oriente positivamente su administración, enfocándose en uno de los insumos más importantes, como lo es el recurso humano y el desarrollo de las funciones administrativas que se desempeñan dentro de esta Institución. La investigación teórica sustenta la posterior creación del Sistema de Gestión de recurso humano, a partir de los antecedentes históricos con los que cuenta Bienestar Universitario, Se desglosa el marco teórico de referencia a partir de las generalidades de la teoría de sistemas con un enfoque administrativo, las partes que conforman una gestión de personal para pasar a justificar las funciones administrativas desde la perspectiva teórico administrativo y luego de la legislación vigente para formalizar la teoría de los sistemas de gestión de personal. Posteriormente a la recopilación de información se procedió al diagnóstico de la situación actual de la unidad de Bienestar Universitario, la cual fue tabulada e interpretada y a partir de allí se logró determinar las carencias más significativas. Referente a las conclusiones se tiene que: no existe un Sistema de gestión del recurso humano que ayude tanto a la Doctora encargada de esta unidad como a empleados a saber hacia dónde ir; falta de un encargado de la unidad de Recursos Humanos que organice ejecute y controle los aspectos concernientes al tema. Además, se determinó el poco grado o nada de conocimiento sobre un sistema de gestión lo que dificulta la importancia de su implementación, por lo que al momento de poner en marcha la propuesta será fundamental la concientización de los empleados para que el sistema pueda tener los resultados de manera eficiente y eficaz. Finalmente, con la información obtenida de la investigación y el diagnóstico de la situación actual de la Unidad, se diseñó la propuesta de un Sistema de Gestión de Recursos Humanos para ser aplicado en Bienestar Universitario de la Universidad de El Salvador sede central, que tiene como objetivo principal solventar las debilidades encontradas como resultado de la aplicación del diagnóstico durante la investigación, brindando información oportuna para la toma de decisiones