Found 1182666 result(s)
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Simulaçao numerica de mancais aerostáticos esfericos

Repositorio: Scipedia Open Access
Freitas, D.S., Prata, A.

O método de volumes finitos é aplicado a uma simulaciio do escoamento de ar na folga de mancais esféricos. As equaçóes governantes, altamente náo-lineares, sáo discretizadas e adaptadas para incorporar o insuflamento de ar por meio de restritores de fluxo. Verificou-se que os resultados de capacidade de carga e rigidez apresentados para um mancal típico siio consistentes e coerentes com resultados experimentais.



Cosas que calla Cervantes (Quijote, I, 46-52)

Repositorio: Scipedia Open Access
Frenk, Margit

A careful reading of Don Quixote shows that this masterly novel is not composed of words alone. As all literary masterpieces, the Cervantine work is full with silence. The narrator (who cannot be identified with Cervantes, as we have established before) keeps silent and skips over certain details, or gives partial accounts of them. This paper discusses some Cervantine omissions, and evidences by means of three passages from the first part of the novel that such silences are not overlooks or…



Aproximaçoes estabilizadas de elementos finitos para escoamentos viscosos nao isotérmicos.

Repositorio: Scipedia Open Access
Frey, S.

Neste artigo simulamos numericamente a transferencia de calor nos escoamentos incompressíveis transientes de Navier-Stokes via um método estabilizado de elementos finitos. Construido de maneira a heredar as características de estabilidade dos métodos estabilizados já introduzidos para os modelos de Stokes e advecçao-difusao de calor, o método empregado nao necessita atender à condiçao de Babusska-Brezzi e permanece estável e acurado mesmo em regimes de escoamentos fortemente advectivos. A…



Dimensionamento de plataformas offshore de concreto utilizando a teoria de cascas de tres camadas

Repositorio: Scipedia Open Access
Friaca, C.P.P., Barbosa, M.P., Bittencourt, T.N., Machado, M.

The concrete ffshore platforms, which are subjected a several loading combinations and, thus, requires an analysis more generic possible, can be designed using the concepts adopted to shell elements, but the resistance must be verify in particular cross- sections to shear forces. This work about design of shell elements will be make using the three-layer shell theory. The elements are subject to combined loading of membrane and plate, totalizing eight components of internal forces, which are…



Estabilidad y convergencia de esquemas numéricos para sistemas de Dirac no lineales

Repositorio: Scipedia Open Access
Frutos, J.

Siguiendo una técnica desarrollada por López-Marcos y Sanz-Serna, probamos la estabilidad y convergencia de tres esquenias en diferencias finitas para la solución numérica de sistemas de Dirac no lineales. Los esquemas se comparan por medio de experimentos numéricos.



Estimación teórica y experimental de la vibración de un edificio de nueve niveles localizado en la vecindad de la zona río de Tijuana, BC, México

Repositorio: Scipedia Open Access
Fuentes, Manuel, López, Carlos, Limón, Daniel, Cifuentes, Yuriam, Porras, Rosalba, Barreras, Fortunato

Se estudió la vibración teórica y experimental de un edificio de nueve niveles localizado en la ciudad de Tijuana. Para la estimación teórica se utilizo el programa SAP 2000 V10, y para la estimación experimental mediciones de vibración ambiental. Mediante el cálculo de los espectros de potencia, se estimaron las frecuencias de vibración experimental y las teóricas mediante los espectros de PSA (0%) ante la incidencia del temblor de Northridge-1994. Cocientes espectrales entre Azotea y Planta…



Diseño estructural óptimo - una reseña

Repositorio: Scipedia Open Access
GALLAGHER, R.

Se presenta en este artículo una panorámica de las bases fundamentales del diseño estructural óptimo. Así, tras una breve reseña histórica de los diferentes procedimientos desarrollados para abordar el problema, acompañada de la bibliografía correspondiente, se describen los términos fundamentales que intervienen en un problema de diseño óptimo, juntamente con algunos de los métodos más populares para su resolución por ordenador.



Estimación de error en problemas no lineales mediante elementos de deformaciones supuestas

Repositorio: Scipedia Open Access
Gabaldón, Felipe, Goicolea, José

En este artículo se describe una metodología para la estimación de error mediante elementos con formulación de deformaciones mejoradas y su aplicación a problemas de elasticidad no lineal con deformaciones finitas y de plasticidad infinitesimal. La relacion entre los modos mejorados de deformación y la calidad de la solución de elementos finitos se analiza en el contexto de la estimación de error, cuantificándola mediante la norma enérgetica. A partir de este ánalisis se propone una metodología…



Un algoritmo genético simple para la optimización de estructuras planas articuladas

Repositorio: Scipedia Open Access
Galante, M.

La mecánica natural darviniana de supervivencia de los seres mejor adaptados, puede ser aplicada a la resolución de diferentes problemas de optimización en ingeniería y otros campos. En este trabajo se ha desarrollado un algoritmo genético simple para ser utilizado en la optimización en peso de estructuras articuladas planas. Mediante la asimilación de estructuras a cromosomas representados por cadenas binarias y partiendo de una población generada aleatoriamente, se efectúan los procesos…



Cupex, programa de elementos finitos p-adaptativos para calculos estructurales con módulos expertos de ayuda

Repositorio: Scipedia Open Access
Galante, M., Castro, J.

Se ha creado un código para el cálculo de estructuras elásticas bidiinensionales con las características necesarias para abarcar el mayor número de usuarios posibles. Para ello, se ha desarrollado en un micro computador, se ha elegido un lenguaje interactivo y de gran capacidad gráfica, y se le ha implementado la experiencia existente en este campo. En este artículo se definen los conceptos básicos empleados, se expone la configuración general del código, se comentan las bases conceptuales de…



Gestión de riesgo en gerenciamiento de puentes con modelos de decisión multicriterio discretas

Repositorio: Scipedia Open Access
Galarraga, Jorge, Herz, Marcelo

Conservar más de 2000 puentes en las mejores condiciones de funcionamiento en un contexto de limitaciones presupuestarias requiere un sistema de gestión que asigne los recursos con criterios de prioridad. Los puentes son puntos críticos en la red vial porque su clausura o restricción de uso implica desconectar un tramo completo para todo o parte del tránsito (afecta movilidad y accesibilidad) y porque son potenciales lugares peligrosos (…



The Influence of Advergaming over university students in Lima

Repositorio: Scipedia Open Access
Gallardo, Alice

In times where the consumer is able to find what he wants without being interrupted by advertising, advertisers are required to expand their messages through new alternatives that connect the audience with the brand in an attractive way. The advergame is part of these new tools as it seeks to retain consumers through interactive games that represent the brand’s values, characteristics and benefits. To understand the influence of this advertising tool in Lima’s youth, this…



Un modelo de elementos finitos mixtos para la resolución del problema del contacto elástico

Repositorio: Scipedia Open Access
Gallego, F., Anza, J.

Se aborda el problema del contacto elástico haciendo uso del método de los multiplicadores de Lagrange, dando lugar a un modelo de elementos finitos mixtos. Se introduce explícitamente una ley de fricción no-lineal e implícitamente un carácter no local para la misina. Para evitar oscilaciones de la variable tensión en las proximidades de puntos singulares, se considera la formulación de un funcional lagragiano perturbado. Los algoritmos propuestos liberan posibles dependencias nodales de los…



Garcilaso y Cervantes en la perspectiva del canon

Repositorio: Scipedia Open Access
Gálvez, Pablo, Huerta, David

This essay examines in a succinct manner the relationship between the work of Miguel de Cervantes, especially the Quixote, and the verses of Garcilaso de la Vega in the context of the main values consecrated in the literary canon of the Spanish Golden Age. For that purpose, first we offer a brief biographical and intellectual note aiming to establish some similarities between both authors, and then we record different “signals” or quotations in the pages of both parts of the…



El problema del contacto en bombas de engranajes de perfil trocoidal

Repositorio: Scipedia Open Access
Gamez-Montero, Pedro, Zárate, Francisco, Sánchez, Montserrat, Castilla, Roberto, Codina, Esteve

El objetivo principal de las metodologías presentadas en este artículo es determinar las tensiones de contacto en un engranaje de perfiles trocoidales cuando trabaja formando parte de una máquina óleo-hidráulica. Conocer las tensiones de contacto con una máquina “trocoidal”es importante porque este tipo de máquinas no pueden ser ajustadas para la fricción. La principal dificultad que se plantea en el cálculo de las tensiones de contacto consiste en determinar las fuerzas que se transmiten a…



Dependencia estrutural da capacidade de rotaçao plástica em vigas de concreto armado

Repositorio: Scipedia Open Access
Gamino, André, Manzoli, Osvaldo

Neste trabalho a dependencia da capacidade de rotaçao plástica com relaçao às características físicas, geométricas e construtivas das vigas de concreto armado, ou dependencia estrutural da capacidade de rotaçao plástica em vigas de concreto armado, conforme definiçao por Bigaj [1] é avaliada através do Método dos Elementos Finitos. O termo dependencia…



Quality of the relationships with the media and their impact on the journalistic contents

Repositorio: Scipedia Open Access
Gaona, Karen

This research addresses one of the functions of public relations exercise: management with the media. Supported by the ethical and collaborative relationship with the media the correlation between the quality of relations with the media from an organization with the publication of newspaper media on this, according to the levels of trust, satisfaction and commitment demonstrated linked in his reason as a journalistic source, journalistic relevance of the content and / or events of the…



Study of the middle ear behavior considering the presence of fluid

Repositorio: Scipedia Open Access
Garbe, C., Gentil, F., Parente, M., Martins, P., Santos, C., Branco, C., Paço, J., Jorge, R.

The objective of this work is to study the influence of different fluids of the tympanic cavity into the biomechanical behavior of the middle ear. The 3 D computer model of the tympanic ossicular chain was built using images from computed tomography (CT). After construction of the tympanic ossicular chain model, it was adapted the simulation by placing the passage to the external auditory canal and to the tympanic cavity. The discretization of the model was made using the finite element method…



Unequal scenarios of Europe in crisis. An approach to the effect of the socioeconomic crisis in European Welfare States. The case of Germany, Sweden and Spain

Repositorio: Scipedia Open Access
Domingo, Marta, Morales, Eva

The socio-economic and financial crisis, which is affecting Europe since 2008, is spreading its influence to all European Union member countries. However, as the welfare models are different, the consequences could also be different. Therefore, in this paper we try to make an assessment of this diversity with the following aims: to analyze the weakening of European Welfare States, using as models the Central European (represented by German, Spain and Sweden); and to make a comparison between…



CIMNE workshop on Scipedia

Repositorio: Scipedia Open Access
García-Espinosa, Julio

Scipedia (https://www.scipedia.com) is an innovative Open Science and Research Publishing Platform. Scipedia aims to connect researchers and professionals in science and technology and facilitate the sharing of knowledge, expertise and the outcome of their work. Scipedia.com was born to offer a complete solution for open science, and essentially integrates a collaborative social network for scientists with online editorial and document and data management tools. CIMNE has chosen Scipedia as the…



Development of a decision support system for optimization of the performance of sailing yachts

Repositorio: Scipedia Open Access
García-Espinosa, Julio, Ortigosa, I., Fernández, A.

In this paper, the conception and design of a new monitoring system for a racing yachts rig is presented. The sensors developed are able to process the measured strain data, by applying artificial neural networks (ANN) algorithms, and then evaluate the load acting on an element and identify the direction of the action of that force. This way, it is possible to identify the actual operating conditions of the yacht rig. The required data for ANN training is generated from the results obtained…



The "BAJEL" project. A tool for hydrodynamic design of passenger ships

Repositorio: Scipedia Open Access
García-Espinosa, Julio, Rojas, L, Cabezas, J, Alonso, J.R.

The BAJEL project consists on the validation and final development of a comprehensive computer system to support the hydrodynamic design of ships. It aims at contributing to the optimal design of the new generations of ships, specially passenger vessels, improving their navigation conditions.   This project is developed as a result of the joint work of a center specialized in Computational Analysis (CIMNE) and two Hydrodynamic Research Centers (ETSIN and Canal de El…



CFD analysis of the roll movement of a container ship

Repositorio: Scipedia Open Access
García-Espinosa, Julio, Oñate, Eugenio, Helmers, Jens, Chakkor, Mohameed

In the present work a novel approach has been developed for the resolution of this problem of analysis of the movement of roll of a ship. The methodology used for this is based on the modification of the differential equations of the fluid dynamics (RANSE equations), including the movement of the free surface, by applying the finite calculus method. The modified equations are solved using an implicit predictor-corrector scheme and the finite element method (FEM). This resolution scheme is…



Sensitivity analysis in a camera-LiDAR calibration model

Repositorio: Scipedia Open Access
García-Moreno, A.I., González-Barbosa, J.J., Hurtado-Ramos, J.B., Ornelas-Rodríguez, F.J., Ramírez-Pedraza, A.

Recently the data fusion between a camera and a depth sensor of LiDAR type, has become an issue of major concern in industry and engineering. The quality of the delivered 3D models depends greatly on a proper calibration between sensors. This paper presents a sensitivity analysis in a camera-lidar calibration model. The variability of each parameter was calculated individually by the Sobol method, based on ANOVA technique, and the FAST method, which is based on Fourier analysis. Multiple sets…



Detección de violencia del compañero íntimo en atención primaria de salud y sus factores asociados.

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Rodríguez-Blanes GM, Vives-Cases C, Miralles-Bueno JJ, San Sebastián M, Goicolea I

Intimate partner violence (IPV) against women is a significant public health and human rights problem. Primary care professionals play a key role in detecting and addressing this issue. The aim of this study is to determine the frequency of IPV and its associated factors in primary care by means of a screening questionnaire and to describe the main actions taken in identified cases.



Is the adjustable TVA mesh effective for the long-term treatment of female stress incontinence?

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Romero-Maroto J, Pérez-Seoane H, Gómez-Perez L, Pérez-Tomás C, Pacheco-Bru JJ, López-López A

Objectives: To assess the long-term safety and efficacy of the adjustable TVA mesh in treating stress urinary incontinence. Material and methods: Pseudoexperimental study, before and after, conducted in a university urology department. Eighty-two patients were invited to participate from January 2002 to March 2005. Thirty-two patients agreed to participate and were implanted an adjustable TVA mesh. The preoperative study included a medical history review, physical examination with full…



Recombinant human thyrotropin stimulation prior to I-131 therapy in toxic multinodular goitre with low radioactive iodine uptake

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Azorín Belda MJ, Martínez Caballero A, Figueroa Ardila GC, Martínez Ramírez M, Gómez Jaramillo CA, Dolado Ardit JI, Verdú Rico J

Aim: Stimulation with recombinant human thyrotropin (rhTSH) increases thyroid radioiodine uptake, and is an aid to 1311 therapy in non-toxic multinodular goitre (MNG). However, there are not many studies using rhTSH prior to 1311 in toxic multinodular goitre to improve hyperthyroidism and compressive symptoms. Material and method: A prospective study was conducted on patients with MNG and hyperthyroidism. Patients were recruited consecutively and divided into group I, stimulated with 0.3 mg of…



Evolución de los riesgos ambientales en el contexto de la crisis económica. Informe SESPAS 2014.

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Ferran Ballester, Sabrina Llop, Xavier Querol, Ana Esplugues

This article aims to analyze the impact of the economic and financial crisis on environmental determinants of health. The World Health Organization estimates that between 13% and 27% of the disease burden in countries could be prevented by improving the environment. These effects are larger in vulnerable populations, especially among the poorest. In the last decade, outdoor air pollution (the most significant environmental health risk in most European countries) has declined, mostly due to the…



Studies conducted in Spain on concentrations in humans of persistent toxic compounds

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Porta M, Puigdomènech E, Ballester F, Selva J, Ribas-Fitó N, Domínguez-Boada L, Martín-Olmedo P, Olea N, Llop S, Fernández M

No systematic review is available on studies conducted in Spain on human concentrations of persistent toxic substances (PTS). The objectives were: to identify studies conducted in Spain in the past 30 years that determined concentrations in humans of dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDE), hexachlorobenzene (HCB), hexachlorocyclohexane, (HCH) and polychlorinated biphenyls (PCBs); and to summarize the main characteristics and results of each study.…



Corrigendum a: Indicadores contextuales para evaluar los determinantes sociales de la salud y la crisis económica española.

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Cabrera-León A, Daponte-Codina A, Mateo I, Arroyo-Borrell E, Bartoll X, Bravo MJ, Domínguez-Berjón MF, Renart G, Álvarez-Dardet C, Marí-Dell'Olmo M, Bolívar-Muñoz J, Saez M, Escriba-Aguir, V, Palència L, López MJ, Saurina C, Puig V, Martín U, Gotsens M, Borrell C, Serra-Saurina L, Sordo L, Bacigalupe A, Rodríguez-Sanz M, Pérez G, Espelt A, Ruiz M, Bernal M




PCA3 as a second-line biomarker in a prospective controlled randomized opportunistic prostate cancer screening programme

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Rubio-Briones J, Casanova J, Martínez F, Domínguez-Escrig JL, Fernández-Serra A, Dumont R, Ramírez-Backhaus M, Gómez-Ferrer A, Collado A, Rubio L, Molina A, Vanaclocha M, Sala D, Lopez-Guerrero JA

Objectives: PCA3 performance as a single second line biomarker is compared to the European Randomised Study of Screening for Prostate Cancer risk calculator model 3 (ERSPC RC-3) in an opportunistic screening in prostate cancer (PCa). Material and methods: 5,199 men, aged 40-75y, underwent prostate-specific antigen (PSA) screening and digital rectal examination (DRE). Men with a normal DRE and PSA >= 3 ng/ml had a PCA3 test done. All men with PCA3 >= 35 underwent an initial biopsy (IBx)…



Drug-induced sleep endoscopy.

Repositorio: r-FISABIO: Repositorio Institucional de Producción Científica
Carrasco Llatas, M, Martinez Ruiz de Apodaca, P, Baptista Jardin, P, O'Connor Reina, C, Plaza Mayor, G, Mendez-Benegassi Silva, I, Vicente Gonzalez, E, Vilaseca Gonzalez, I, Navazo Egia, A, Samará Piñol L, Alvarez Garcia, I, Vila Martin, J, Esteller More, E

This document introduces drug-induced sleep endoscopy to the specialist treating sleep breathing disorders and is intended as a guide for those willing to perform the procedure so that it can be reproducible.



La complejidad del problema de la inseguridad vial: Cómo explicarlo y cómo enfrentarlo

Repositorio: Scipedia Open Access
Ordóñez, Hernán

En esta ponencia se presenta la complejidad de la problemática de la inseguridad vial y las diferentes ramificaciones de manera específica y pragmática. Además, desde el ámbito de la complejidad, se enumeran una serie de interrogantes que deben atenderse y los principios básicos para mejorar la seguridad vial para dar respuesta a dichas interrogantes. A estos efectos, se describe una propuesta metodológica aplicando…



Molecular mechanisms associated with azole resistance in Candida species

Repositorio: Scipedia Open Access
Rodríguez, Marcela Orjuela

Opportunistic fungi of the Candida species have been associated with a broad spectrum of human infections with significant morbidity and mortality rates, ranging from superficial skin infections to deep or disseminated candidiasis. To combat this microorganism, antifungals are used, substances capable of specifically attacking fungi. Among them, the most commonly used are azoles, molecules characterized by an azole ring with various substituents, however, there has been widespread resistance to…



Temperament and Character in Mexican practitioners of Haidong Gumdo (Korean Sword): A Psychobiological Perspective on Personality

Repositorio: Scipedia Open Access
Calderón, Gabriela

Martial arts are a common practice by physiological and psychobiological virtues they possess. The Haidong Gumdo is a Korean martial art that specializes in the use of swords and technique is based on combat techniques. Studies of personality in martial arts are limited to the psychobiological model of Cloninger which includes the temperament which is heritable, independent, genetically homogeneous and stable over time and the character indicating individual differences affected by social,…



Relational, communicational and synergistic function of Public Relations in public and private organizations in Peru

Repositorio: Scipedia Open Access
Orriaga, Miguel

This investigation led proposes the articulation, in a conception as a whole, of a new theoretical model based on the stablishment of three functions of Public Relations that should be present in public and private organizations, that are, the relational function, the communicational function and the synergy function. This is an exploratory study, non-experimental, descriptive, comparative, and from an intracultural mode that took a sample of twenty executive officers of Public Relations and…



Control parameter for polygonal simplification applied to medical images

Repositorio: Scipedia Open Access
Ortega, D.R., Gutiérrez, G., Iznaga, A.M., Rodríguez, T., Beule, M., Verhegghe, B.

The description of mechanical behavior of hard tissues by means of discrete models goes through various stages of analysis, which range from digital image processing and the specification of physical properties of tissue to the discrete model. Nowadays, technologies for acquiring medical images allow obtaining high resolution images. Obtaining the geometrical domain of these images requires high levels of hardware to process and store them, and polygonal simplification, with a defined minimum…



Obtaining foot bone structure applying global and adaptive thresholding

Repositorio: Scipedia Open Access
Ortega, D.R., Gutiérrez, G., Iznaga, A.M., Rodríguez, T., Beule, M., Verhegghe, B.

The description of the mechanical behavior of hard tissues by means of discrete models goes through various stages of analysis, which range from digital image processing to the specification of tissues physical properties to the discrete model. To achieve good results it is essential to decompose these models into their constituent parts. In this paper we discuss a method for geometrical description of foot bones from a sequence of computed tomography (CT) images. This research proposes a…



Drag prediction system based on neural networks

Repositorio: Scipedia Open Access
Ortigoza, I., García-Espinosa, Julio

In this work we will be based on two experimental-based statistical techniques, which allow us to determine approximately the residual resistance coefficient of the sailboat and the viscous coefficient and wave resistance coefficient in the case of merchants. For the calculation of the residual resistance in sailboats the most used method is the Delft series, and for the calculation of the residual resistance in merchants the most widespread method is that of Holtrop and Mennen. Both methods…



Matrices generadas por adicion de díadas (matrices de rango 1): Propiedades y aplicaciones

Repositorio: Scipedia Open Access
Ortigueira, M.

Se estudian las matrices elementales de rango 1 (díadas). Para estas matrices se presentan fórmulas para su factorización, inversión, descomposición en valores propios y valores singulares. Estos resultados son aplicados en análisis recursivo a cualquier matriz, siempre que se descomponga en una suma de matrices de rango 1.



El peso de la responsabilidad: Sobre la "micro-ética" y la "macro-ética" en la enseñanza de ética en la ingeniería

Repositorio: Scipedia Open Access
Ortiz, Sara

Editorial: El peso de la responsabilidad: Sobre la "micro-ética" y la "macro-ética" en la enseñanza de ética en la ingeniería



Quality management in the university classroom

Repositorio: Scipedia Open Access
Ortiz, Wilmer

This study aimed to address quality management in the university classroom, specifically in the Department of Basic Sciences of the Dean of Civil Engineering of the Universidad Centroccidental Lisandro Alvarado. It was conceived under the modality of qualitative research of ethnographic type with an interpretive character. The research process involved three phases: obtaining information, in which key informants were selected from a group of four (4) teachers and three (3) students in an…



Un modelo numérico de refracción-difracción de ondas en zonas costeras

Repositorio: Scipedia Open Access
Ortiz, P., Pastor, M.

Se estudia en el presente trabajo el tratamiento numérico, mediante el método de elementos finitos (MEF), de la ecuación aproximada de la onda para variaciones graduales de profundidad. Es planteada una nueva aproximación a la condición de borde



Descomposiciones ortogonales para el cálculo del rango numérico matricial

Repositorio: Scipedia Open Access
Ortí, Gregorio, Ortí, Enrique

El calculo del rango numerico matricial surge en numerosas aplicaciones de la ciencia y de la ingenieria. Actualmente existen tres aproximaciones numericas basicas para efectuar este calculo: la descomposicion SVD, la descomposicion URV y las descomposiciones QR reveladoras de rango (QRRR). En este trabajo se analizan experimentalmente varios algoritmos secuenciales, basados en las tres aproxima- ciones anteriores para el calculo del rango numerico matricial. Asi, en el estudio comparativo…



Venezuela: Teaching in troubled times

Repositorio: Scipedia Open Access
Oré, Hugo

One of the key aspects of the teaching task is to keep up with the advances that continually come up in the areas in which they are experts; Aspect that at times for multiple reasons is not easy that is feasible. The updating in content, new technologies, as well as teaching and learning methodologies is required for the training of competent students capable of performing before their peers. This paper presents how the methodology of Project-Based Learning (ABP) applied in the subject &…



Relaciones entre los términos de la matriz de rigidez de un elemento finito tridimensional hexaedrico de ocho nodos

Repositorio: Scipedia Open Access
Osorio, J., Cerrolaza, M.

El cálculo de los términos de la matriz de rigidez de un elemento finito viene dadoo por integrales múltiples de funciones racionales, lo cual amerita un alto costo de tiempo en CPU. En el presente trabajo analizaremos este matriz para el elemento finito hexaédrico de 8 nodos con tres grados de libertad por nodo para problemas de elasticidad tridimensinal y para este elemento en particular, el denominador del integrado en un polinomio en tres variables. La matriz de rigidez es de orden 24 x 24…



Evolution of the schools of first letters and its impulse by Carlos III. Special reference to the regulation for the establishment of free schools for girls of 1783

Repositorio: Scipedia Open Access
Osuna, José

The configuration of education as a right and value in today's society is related to the creation and  development  of  primary  schools  during  the Ancient Régime,  which  were  originally reserved for the privileged classes. The approaches of enlightened intelle ctuals allowed public authorities to detect the need to improve elementary education, and to create more and better schools of the so…



Communication Strategy Design based on the use of Social Networks in order to promote alternative Tourism with indigenous identity

Repositorio: Scipedia Open Access
Morales, Imelda, Cadena, Gwendolyne

The intention of this work is to present the design and implementation of a communication strategy based on the use of social networks on the web 2.0, in order to promote alternative tourism with indigenous identity. This project has been developed by students of the majors in Communication, Marketing, and Animation and Digital Art, under the coordination of two professors of the Tecnológico de Monterrey, Campus Cuernavaca, who have applied the pedagogic model known as Learning -…



Identification of Public Relation strategies used by the Peruvian Government in the management of social conflicts related to the mining activity in Cajamarca, Peru

Repositorio: Scipedia Open Access
Castro, Marita

It is known that mining activity is synonym of investment, growing and development, however many times it becomes cause of controversies, difficulties and unrest; not only between the mining enterprise and the impacted communities but also the government gets involved in the conflicts. This happens, because as the actor in charge of regulate mining activities, it has the obligation of assume a position and to decide about the course of these conflicts. This article aims to identify the…



Data Journalism as specialization of Internet news organizations

Repositorio: Scipedia Open Access
Vivar, Jesús, Aguilar, Cecilia

This work relates to the analysis of a form of specialization based on Data Journalism and news organizations (old Media companies) have been incorporating this specialty as innovation journalism. Data Journalism involves using statistical and visualization tools to create and tell stories better in new and attractive to the Internet audience. It is the evolution of what some years ago was known as Precision Journalism or Desktop Journalism. The article, starting from an analytical…



Representation of race, class and morality in peruvian television. A social analysis of “Magaly TeVe” and “Al fondo hay sitio”

Repositorio: Scipedia Open Access
Dávila, Mario

This article proposes to analyze the representation of race, class and moral in television phenomena “Magaly TeVe” and “Al fondo hay sitio” from an anthropological glance of the television, and understanding their communicative, discursive and social dimensions. On one hand, after analyzing the discourse of “Magaly TeVe”, it was easy to see that the why and how the success of the communication strategy for this television phenomenon…



Tell me with what you play and I’ll tell you who you will be. Analysis of Christmas Advertising Campaigns of children’s toys in broadcast television in Lima (2011-2012)

Repositorio: Scipedia Open Access
Cuéllar, Héctor

This article presents research describing gender roles offered to boys and girls from Christmas toy advertising through broadcast television in Lima. These messages provide content that lead to the adoption of stereotypical gender roles from an early age, which are perpetuated throughout life. This article has been worked on a multidisciplinary approach and from a quantitative and qualitative perspective. Analysis was performed first toy market in Lima, the number of spots broadcast during the…



Modes of telling the Graphics News in Northern Argenti

Repositorio: Scipedia Open Access
Parraga, César

The aim of this paper is to approach and to understand the ways that three newspapers of northern Argentina (Pregón, El Tribuno de Salta and El Liberal) tell the news, considering the first stylistic level and the second net graphical-spatial level. Based on this, it proposes a critical reflection on the mechanisms and modalities applied on the redaction surface, identifying needs and challenges in the context of the demands of the digital world and the transformation of media…



Televisions and Democracies: Mass Media and Web TV in Externado University of Colombia

Repositorio: Scipedia Open Access
Real, Felipe

The understanding of democracy as a political organization form, has in many scenarios the debate on how pure is in a representative form and how effective is when is “pure” or direct democracy, as well as thought for the “polis” or places with an specific geographic location, contrary to the Saskia Sassen concept of “global cities”. From this discussion, we can address the television as a twentieth century mass media, funded and…



Academy and Post-industrial Journalism. From Massive Culture to Dismassification and Fragmentation

Repositorio: Scipedia Open Access
Mazzone, Daniel

In the academic careers of subfields like Journalism, the communicational field is at a crisis caused by the gap between theory accumulation and knowledge reproduction. Thirty years ago, Verón and Martín-Barbero proposed a new approach, displacing analysis of the media to mediations. In 2008, Scolari started focusing in the hypermediations, consisting of forwards, hybridization and contaminations. In 2009, Castells put emphasis on the observation of social transformations…



Debates and controversies over the images of International News. Photo-impact on global front pages

Repositorio: Scipedia Open Access
Garzón, Estrella, Amérigo, María, Thiéblemont-Dollet, Sylvie

The journalistic images are subject to debate and controversy: from the girl of Trang Bang to the most recently images of women and female kids during the earthquake and the cholera epidemic in Haiti in 2010, comments on the symbolic and communicative value of the pictured subject keep occurring. The press images awarded as “photo of the year” by World Press Photo in the period between 2000 and 2011 represent international conflicts and disasters where the main characters…



Experts in Communication and Fashion. Professional Quality in crisis time

Repositorio: Scipedia Open Access
Curiel, Concha

In the area of specialized news reporting, fashion occupies an increasingly role. The demand of the next media professional requires knowledge, deepening and practice to offset the presence of interested and intruder sources, which annul the role of the Fashion Journalist. This investigation is based on aspects like the lack of fashion specialized journalists formation, the lack of quality inside the journalistic texts and also the perspectives of new companies and work inside the Fashion…



Communication in Corporate Social Responsibility Management

Repositorio: Scipedia Open Access
Córdoba, Sandra

The business world is eager for management models that allow being more efficient, surrounded by a development and interest in building a social consciousness. The financial crisis of recent years has led the company to review and be aware of the importance to maintain ethical behavior, to strengthen the management of their own identity from values and from there to manage your image and corporate reputation transparent and reliable. In this context, communication and responsible relationship…



Happiness, versus happycracia

Repositorio: Scipedia Open Access
Ariño, Marino

This article reflects on the concept of happiness throughout history, and its relationship with the three reference points of classical philosophy: the truth, the goodness and the beauty. It discusses whether the digital technologies are leading us to or move us away from happiness. The article tries to give an answer to questions such as, can we educate to develop a happy life? What is the influence of education to reach happiness? Can the effort and the well-done work be a source of happiness…



A formulation for the study, by the method of finite elements, of the deformation of marine pipes during their installation

Repositorio: Scipedia Open Access
Oliver, Javier, Oñate, Eugenio

La ejecución de emisarios submarinos para saneamiento y la instalación de tuberías para transporte de productos petrolíferos son ejemplos de la necesidad de conocer los esfuerzos y deformaciones que se producen en el tendido de tuberías submarinas, a cuyo estudio, mediante elementos finitos en diversas condiciones de instalación, se dedica este artículo, que permite la obtención de ábacos de c…



Communication as Instrument of Expansion in Small and Medium Spanish Companies: The Segovian Case

Repositorio: Scipedia Open Access
Nieto, Begoña

Implementation and development of communicative strategies is still incipient in the Spanish SME’s market. Companies keep using old techniques instead of moving forward on innovative plans due to the lack of knowledge regarding the effectiveness of new programs. This article offers a perspective on communication management in the mentioned framework based on an empirical research. The highlights have been given by foreign trade companies from Segovia (Spain) that operate in the broad…



Educational Values through Advertising. ONCE Campaigns on the Radio

Repositorio: Scipedia Open Access
González, Aurora, Area, Sarai

Advertising transmits values that help forming a kind of society or bring to light the changes that occur in it. Our society is experiencing a rising level of awareness about the need to build a world with values, or human values. In the recent past, the ONCE advertising campaigns for radio enjoyed great reputation for quality of implementation and production. Some of the spots produced for these campaigns came to famous advertising festivals like San Sebastian, later called &ldquo…



Impact of the slab stiffness and opening asymmetries in the assessment of the elastic lateral displacements of walls

Repositorio: Scipedia Open Access
Tena Colunga, Arturo, Liga-Paredes, Angel

Approximations obtained with the equivalent frame method and Beck-Coull method to assess elastic lateral displacement profiles of walls with openings are compared to results obtained with the finite element method using reasonably fine meshes. Multistory walls were studied, considering symmetric and asymmetric distribution of openings with respect to a vertical axis. The contribution of slabs in the lateral stiffness was considered through an equivalent flange as recommended in several building…



The revival of International Radio: Multinationals, religious broadcasters, foreign radio and Internet

Repositorio: Scipedia Open Access
Godoy, Antonio

Without the uproar caused by the process regarding television, the Radio media has also been attracting, in recent decades, companies from different countries that have forged multinational empires, especially in the field of music Radio. This new supranational dimension of the Radio is also increased by the renewed rise of religious radio stations and new approaches to old propagandist radio, all also taking advantage of the possibilities offered by internet. Radio is now more international…



Ethical Considerations for Youth Treatment by the Media

Repositorio: Scipedia Open Access
Villegas, Juan

This article reflects on the Youth as a stage of transition and change in human life that has been interpreted, in many ways, by the Media. Young people often represent an icon of the breakdown of social order, which incurred easy to speculate on authorship in any act of criminality. On the other hand, reflects a confused image of proportion to its reality and its efforts to train and integrate into the labor market. Instead, they are used as symbols of the promise of future political messages…



Enological-tourism Communication by Internet

Repositorio: Scipedia Open Access
Lazo, Mónica

The use of the Internet bursts in a key moment for the enological tourism development in several regions of Spain and, it is essential to get to know and control the use of this new channel’s elements to communicate in an efficient way the strategical plans of enological tourism management towards different audiences. This research uses a comparative questionnaire about the management between the main enologicaltourism websites of two important origin denominations: La Rioja and…



Monetary ecosystem services valuation in natural environment management

Repositorio: Scipedia Open Access
Álvarez, David

As it happened with Stern Report, which made international community change their attitude related to climate change, TEEB (The Economics of Ecosystem Services and Biodiversity) was a turning point in valuing biodiversity and ecosystem services. This change of attitude happened, partially, thanks to include monetary ecosystem valuation of ecosystem services and how much their conservation and avoid their loss worth to the entire society. Integrate monetary valuation in green infrastructure…



Empleo de elementos junta en el análisis lineal de fractura. Aplicación al estudio de la fractura en modo mixto

Repositorio: Scipedia Open Access
Álvarez, Víctor, Gettu, Ravindra, Carol, Ignacio

En este artículo se va a presentar la aplicación de los elementos junta al análisis de la propagación de la fisura. El estudio se va a limitar a la realización de un análisis lineal de la fractura aplicando la Mecánica Elástica Lineal de Fractura, dejando para futuras publicaciones la exposición de desarrollos no lineales. En este trabajo, la propagación de la fisura se ha estudiado en vigas a flexotracción por tres puntos con la entalla excéntrica. Esta configuración de ensayo ha sido…



Proyecto final de grado de un edificio bioclimático, sostenible y eficiente

Repositorio: Repositorio Abierto de la UdL
López Rivera, Gabriel Renzo

El presente Trabajo Final de Grado corresponde al desarrollo de un edificio autosuficiente utilizando como bases a la arquitectura bioclimática y sostenible, este edificio tiene un uso de restaurante y está ubicado en la ciudad de Vigo, Pontevedra. El objetivo es el de utilizar estrategias arquitectónicas sostenibles con el fin de optimizar los recursos y materiales; disminuir el consumo energético; promover la energía renovable; reducir al máximo los residuos y las emisiones; reducir al máximo…



Human-caused fire occurrence modelling in perspective: a review

Repositorio: Repositorio Abierto de la UdL
Costafreda Aumedes, Sergi, Comas Rodríguez, Carles, Vega García, Cristina

The increasing global concern about wildfires, mostly caused by people, has triggered the development of human-caused fire occurrence models in many countries. The premise is that better knowledge of the underlying factors is critical for many fire management purposes, such as operational decision-making in suppression and strategic prevention planning, or guidance on forest and land-use policies. However, the explanatory and predictive capacity of fire occurrence models is not yet widely…, We acknowledge with gratitude the useful contributions of the three anonymous reviewers and the Associate Editor of this review paper. This research article received a grant for its linguistic revision from the Language Institute of the University of Lleida in 2017.



Ars sine scientia nihil est. El incierto devenir de la documentación gráfica del Patrimonio Arqueológico-Arquitectónico, Ars sine scientia nihil est. The uncertain future of the graphic documentation of archaeological-architectural heritage

Repositorio: Repositorio Abierto de la UdL
Puche, Josep M.

Se puede afirmar que hay una crisis conceptual de la arqueología. Y el dibujo arqueológico no es ninguna excepción, al contrario, ya que la irrupción de nuevas tecnologías de captura de la realidad (SMCD) y de su representación han evidenciado las carencias históricas de las que ha adolecido. En este artículo pretendemos mostrar una situación que imaginamos paradójica; la implementación de las nuevas tecnologías de documentación en un entorno con grandes carencias conceptuales. Y mostrar los…, The concept of archaeology is in crisis, and archaeological drawing is no exception. The emergence of new technologies to capture and represent reality graphically (SMCD) clearly reveal the historical deficits. This article focuses on exposing an apparent paradox, namely, the advent of new recording technologies in an environment characterized by strong conceptual deficiencies. Moreover, the study aims at identifying the challenges and potential of correctly applying the new graphic…



Análisis comparativo de los estudios carpológicos de la Depresión del Ebro durante el III y I milenio a. C. Un estado de la cuestión, Comparative analysis of carpological analyses undertaken in the Ebro Basin (Spain) during the 3rd and 1st millennium BC. The state of research

Repositorio: Repositorio Abierto de la UdL
Tarongi Chavarri, Miguel

En este análisis se recopilan los estudios carpológicos de época protohistórica realizados en la Depresión del Ebro. Esta región presenta unas condiciones climáticas y ecológicas concretas que la definen. Las poblaciones sedentarias aquí establecidas se adaptaron al medio y desarrollaron producciones agrarias bastante similares por toda la depresión. A pesar de la escasez de datos carpológicos en gran parte del territorio, salvo en las comarcas del Cinca y las de la provincia de Lleida, se han…, The current study summarises the carpological analyses carried out in the Ebro Basin for the Protohistoric period. This is a region characterised by specific climatic and ecological conditions causing the sedentary population to adapt to the environment and to develop a homogeneous agrarian production throughout the valley. In spite of the scarcity of the carpological data in a great part of the territory (with the exception of the Cinca region and the Province of Lleida), certain theories…



Diálogo entre Tàpies y el arte africano a partir del lenguaje plástico, Plastic dialogues between Tàpies and black african art

Repositorio: Repositorio Abierto de la UdL
Revilla Carrasco, Alfonso, Llevot Calvet, Núria, González Rodríguez, Juan Agustín

Dentro de los planteamientos etnocéntricos que rigen el acercamiento de los artistas occidentales al arte negroafricano, Tàpies se desmarca de los mismos para realizar una búsqueda más profunda de las significatividades que den sentido a la forma de las tallas y máscaras negroafricanas. En este artículo planteamos como Tàpies ha vinculado su obra al arte negroafricano, estableciendo un diálogo conceptual más que formal. Frente a otros autores, como Picasso, en el que la influencia del arte…, Considering the ethnocentric pespectives mediating most approaches to BlackAfrican art by Western artists, Tàpies eganges in a more profound search for a meaningfulness that gives sense to the particular shapes of Black-African carvings and masks. The aim of this paper is to analyse the ways in which Tàpies' oeuvre absoerved and reflected the influence of black African art, establishing a conceptual rather than formal dialogue. In contrast with other painters like Picasso, whose…



La orientación psicopedagógica en el contexto no formal

Repositorio: Repositorio Abierto de la UdL
Filella Guiu, Gemma

Se reflexiona sobre la intervención psicopedagógica en el contexto no formal, y en concreto sobre la aplicación de los tres modelos básicos de orientación (clínico, programas, consulta) en diferentes ámbitos del contexto de la educación no formal. Intervenir a partir de un modelo o de otro depende, en gran medida, del ámbito no formal, aunque podemos adelantar que encontramos una combinación de los tres y podemos hablar de modelos mixtos. El contexto no formal es muy amplio y variado, en el…



Ratios de solvencia y rentabilidad en empresas familiares y PYMES

Repositorio: Repositorio Abierto de la UdL
Gallizo Larraz, José Luis

Mediante el análisis de ratios se estudian los conceptos básicos de solvencia y rentabilidad con particular atención a las empresas familiares y PYMES. El primero entendido como liquidez necesaria para atender las obligaciones de pago a sus vencimientos, el segundo, como expresión del beneficio que queda con relación a los capitales invertidos. Se verá que las empresas familiares poseen rasgos y características diferentes al resto de empresas que se manifiestan en el estilo de gestión y en la…



La normativa común de compraventa europea, ¿punto final o punto y seguido?, The common european sales law. The End point or point and followed?

Repositorio: Repositorio Abierto de la UdL
Fontanellas Morell, Josep M.

La propuesta de reglamento comunitario concerniente a una normativa común sobre compraventa europea, hecha pública por la Comisión Europea en octubre de 2011, parece haber agotado su recorrido en diciembre de 2014, cuando, en el calendario de trabajo para el siguiente ejercicio, la propia Comisión anuncia su transformación en una iniciativa legislativa más amplia dirigida a regular, desde diversos puntos de vista, el mercado único digital. Esta reconducción se ha confirmado en mayo de 2015, al…, The Proposal for a Regulation on a Common European Sales Law, released by the European Commission in October 2011, seems to have run its course in December 2014, when, in the Work Programme for 2015, the Commission announced its transformation into a wider legislative initiative to regulate, from various points of view, the Digital Single Market. This readjusting was confirmed in May 2015, when the Commission has undertaken to submit before the end of the year a proposal to harmonise the…, Este trabajo se inscribe en el Proyecto de investigación MINECO DER2012–37898–C02–01



La forma de la designación de ley en la propuesta de reglamento europeo en materia de sucesiones

Repositorio: Repositorio Abierto de la UdL
Fontanellas Morell, Josep M.

El 14 de octubre de 2009, la Comisión de las Comunidades Europeas hizo pública su Propuesta de Reglamento del Parlamento Europeo y del Consejo relativo a la Competencia, la Ley Aplicable, el Reconocimiento y la Ejecución de las Resoluciones y los Actos Auténticos en Materia de Sucesiones y a la Creación de un Certificado Sucesorio Europeo. En el sector del Derecho aplicable, una de las principales características de la Propuesta es la de dar entrada a la autonomía de la voluntad en un terreno…



Influencia de la propiedad familiar de la empresa minorista en los resultados y en el empleo a lo largo de la crisis económica

Repositorio: Repositorio Abierto de la UdL
Buenestado Teixidó, Joan

El objetivo de este estudio consiste, en primer lugar, en analizar si la reciente crisis económica puede haber tenido un diferente impacto en las empresas familiares y las empresas no familiares del sector minorista español y, en segundo lugar, analizar si las empresas familiares han adoptado un diferente comportamiento con respecto a las políticas de contratación y despido de personal. Para ello, se ha utilizado una muestra de 6.629 empresas minoristas presentes en la base SABI. La metodología…



¿La integración vertical mejora la rentabilidad económica de las empresas agroalimentarias?

Repositorio: Repositorio Abierto de la UdL
Sopena Canosa, Mireia, Moreno Gené, Jordi

El objetivo del trabajo consiste en averiguar si la integración vertical hacía atrás, llevada a cabo en empresas del sector agroalimentario español durante los años de crisis financiera, supone una estrategia que permita mejorar la rentabilidad económica de un sector caracterizado por una gran presencia de empresas familiares, a quienes este tipo de estrategia también puede interesar para evitar conflictos familiares derivados de la gestión. Para ello, se han analizado un total de 3.955…



Comparación del tipo medio efectivo del impuesto de sociedades en empresas familiares y no familiares

Repositorio: Repositorio Abierto de la UdL
Bernié Prades, Martina, Cardil Forradellas, Alba

El presente estudio compara el tipo medio efectivo en el impuesto sobre sociedades en empresas familiares y no familiares. Atendiendo al diferente nivel que presentan las inversiones en investigación y desarrollo, se analizan los sectores de las tecnologías de la información y la comunicación (TIC) y de la hostelería. Se define el concepto de empresa familiar y se contextualiza mediante las características, ventajas y desventajas, y se presenta la situación actual de esta tipología de empresas…



El Protocolo Familiar: La solución jurídica para la empresa familiar

Repositorio: Repositorio Abierto de la UdL
García Companys, Anna

Las empresas familiares gozan de ventajas y tienen puntos débiles comunes que han sido ampliamente estudiados por la doctrina. Para atender las diferencias de criterio en la toma de decisiones que surgen frecuentemente entre los miembros de la familia en momentos clave de la vida de la empresa, se han creado mecanismos contractuales que protegen a la empresa familiar cuando afloran los conflictos. Este artículo pretende analizar el régimen jurídico aplicable a uno de estos instrumentos desde…