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Higher-order simulations: Strategic investment under model-induced market structures

Repositorio: Scipedia Open Access
Peffer, Gilbert, Llacay, Bàrbara

The trading and investment decision processes in financial markets becomes ever more dependent on the use of valuation and risk models. In certain, cases such as risk management, modelling practice has become so homogeneous that one is led to ask about the effect this has on the price formation process. Furthermore, should stable price patterns emerge from this, can sophisticated investors who have private information about the use and characteristics of these models make superior gains? The…



Media Literacy in Brazil: Experiences and Models in Non-formal Education

Repositorio: Scipedia Open Access
Pegurer-Caprino, Mônica, Martínez-Cerdá, Juan-Francisco

This article analyses the status of media literacy in Brazil from the perspective of non-formal education. It quantifies the situation through a sample of projects (N=240) and organizations (N=107) that develop media literacy activities according to the internationally recognized three dimensions of media education (access/use, critical understanding, and media content media production). These projects are aimed at different communities of citizens according to various levels of segmentation (…



Effects of Crop Growth on Hydrological Processes in River Basins and on Regional Climate in China

Repositorio: Scipedia Open Access
Pei-Hua, Qin, Feng, Chen, Zheng-Hui, Xie

The regional climate model RegCM3 incorporating the crop model CERES, called the RegCM3_CERES model, was used to study the effects of crop growth and development on regional climate and hydrological processes over seven river basins in China. A 20-year numerical simulation showed that incorporating the crop growth and development processes improved the simulation of precipitation over the Haihe River Basin, Songhuajiang River Basin and Pearl River Basin. When compared with the RegCM3 control…



La metàfora cinegètica a l'«Spill» de Jaume Roig

Repositorio: Scipedia Open Access
Peirats, Anna

Use and explanation of the metaphor of the chase in love in the Preface, the second book and the lesson of Solomon in Jaume Roig’s «Spill» (Mirror). Starting from an utterly medieval view of women, Roig sets out to give a lesson to those who do not know, something that is coherent with the sermon structure taken by the work.



A semantic service model of selective dissemination of information (SDI) for digital libraries

Repositorio: Scipedia Open Access
Peis, Eduardo, Herrera-Viedma, Enrique, Morales-del-Castillo, José-Manuel

We present the theoretical and methodological foundations for the development of a multi-agent SDI service model for specialized digital libraries, applying semantic web technologies that permit more efficient information management, improving agent-user communication processes and facilitating accurate access to relevant resources. To do this, rss feeds are used as “current awareness bulletins” to generate personalized bibliographic alerts. The SDI service model has an rss feeds management…



Continuum damage model for orthotropic materials: Application to masonry

Repositorio: Scipedia Open Access
Pelà, L, Cervera, Miguel, Roca, Pere

This paper contributes to the formulation of continuum damage models for orthotropic materials under plane stress conditions. Two stress transformation tensors, related to tensile and compressive stress states, respectively, are used to establish a one-to-one mapping relationship between the orthotropic behaviour and an auxiliary model. This allows the consideration of two individual damage criteria, according to different failure mechanisms, i.e. cracking and crushing. The constitutive model…



An orthotropic damage model for the analysis of masonry structures

Repositorio: Scipedia Open Access
Pelà, L, Cervera, Miguel, Roca, P

This paper presents a numerical model for nonlinear analysis of masonry structural elements based on Continuum Damage Mechanics. The material is described at the macro-level, i.e. it is modeled as a homogeneous orthotropic continuum. The orthotropic behavior is simulated by means of an original methodology, resulting from the concept of mapped tensors from the anisotropic field to an auxiliary workspace. The application of this idea to strain-based Continuum Damage Models is innovative and…



A localized mapped damage model for orthotropic materials

Repositorio: Scipedia Open Access
Pelà, L, Cervera, Miguel, Oller, Sergio, Chiumenti, Michele

This paper presents an implicit orthotropic model based on the Continuum Damage Mechanics isotropic models. A mapping relationship is established between the behaviour of the anisotropic material and that of an isotropic one. The proposed model is used to simulate the failure loci of common orthotropic materials, such as masonry, fibre-reinforced composites and wood. The damage model is combined with a crack-tracking technique to reproduce the propagation of localized cracks in the discrete FE…



Analysis of the effect of provisional ties in the construction and current deformation of Mallorca cathedral

Repositorio: Scipedia Open Access
Pelà, Luca, Bourgeois, Julien, Roca, Pere, Cervera, Miguel, Chiumenti, Michele

This article presents the analysis of the structure of Mallorca Cathedral taking into account the influence on the structural behavior of auxiliary iron ties used during the construction process. Recent studies (Roca et al. 2012, 2013) presented some hypotheses about the construction process of the cathedral. This article complements the previous results by considering the use of auxiliary ties as temporary stabilizing device during the construction. Evidence of the use of ties during the…



The disassociation between television and education

Repositorio: Scipedia Open Access
Pons, Josep

Today’s youth lives leaping between two differing environments: that of mass culture technologies, fundamentally television, and that of educational institutions. Teaching staff is faced with the challenge of integrating school-aged youth into the social and educational medium and into a basic awareness of their cultural surroundings; regardless of their social, familial or cultural status. In our media system the educational body is unaided by the most powerful media: television. A (re)…



Freak Edge Waves

Repositorio: Scipedia Open Access
Pelinovsky, Pelinovsky, E, E, Lechuga, Lechuga, al., A., Lechuga, Antonio

The nonlinear and unsteady dynamics of the edge waves is discussed. Two physical processes: dispersive focusing and nonlinear modulational instability, are studied. Both mechanisms can induce the appearance of the short-living large-amplitude isolated waves and intense wave packets (“freak edge waves”).



Sustainable Pedestrian Bridge using Advanced Materials (SUPERBAM)

Repositorio: Scipedia Open Access
Pellegrini, Lara, Ribó, Ramon, Jordan, Javier, Sobrino, Juan

Fiber-reinforced polymer pedestrian bridges are becoming a competitive alternative to conventional concrete or steel pedestrian bridges in the span range from 5 to 30 m. In order to consider it as a viable alternative, it is necessary, among other things, to be price competitive in the total cost of the bridge, including construction and full-life maintenance. One of the ways of making the cost competitive is to normalize a few cross-sections and create a catalog of standard cross-sections and…



Analisis tridimensional de la onteracción fluido-estructura en una válvula cardíaca mecánica doble hoja utilizando la ecuación generalizada de Lattice Boltzmann

Repositorio: Scipedia Open Access
Pelliccioni, O., Cerrolaza, M., Herrera, M.

Se presenta un modelo para la simulación del flujo tridimensional que pasa a través de una válvula artificial de corazón en posición aórtica utilizando la ecuación generalizada de lattice Boltzmann bajo un modelo de multi-relajación. Se presentan resultados gráficos de velocidades, líneas de corriente, vorticidad y esfuerzos de corte a lo largo del flujo por la arteria. La simulación combina la aplicación del modelo de lattice Boltzmann con un método de multi-reflexión para el condicionamiento…



Hydrodynamic coefficients estimation for Underwater Autonomous Vehicles using CFD code

Repositorio: Scipedia Open Access
Pellicer, Antonio

This Master Thesis is focused on the estimation the hydrodynamic coefficients for Underwater Autonomous Vehicle (AUV) by means of CFD code. First a state of art of AUVs development is presented. Second, the sizing process for AUVs is studied. The main decissions on the design of this type of vehicles is showed. Third, hydrodynamic coeffcients required to solid rigid movement of AUV is presented. Fourth, an estimation of these coefficient is carried out using different formulation. Fifth,…



Some notes on the influence of Joan Roís de Corella’s mythological fables in Francesc Alegre’s «Transformacions»

Repositorio: Scipedia Open Access
Prades, Gemma

This article establishes a comparison between Joan Roís de Corella’s mythological fables and Francesc Alegre’s translation of Ovid’s Metamorphoses into Catalan. The author proves by means of examples that Alegre drew on Corella’s Lamentacions and Parlament en casa de Berenguer Mercader while translating his work between circa 1472 and 1492. Further, he may have also known Corella’s Raonament de Telamó i Ulisses. Thus, even if Alegre based his text on the Latin poem, he surely completed the…



Detección de daño usando transferencia de calor por conducción

Repositorio: Scipedia Open Access
Peláez, Jhon, Just-Agosto, Frederick, Serrano, David, Shafiq, Basir

En esta investigación estudia la factibilidad de aplicar un método térmico para detectar daños en materiales compuestos, en el cual se usan los cambios mostrados en la conductividad térmica, k, del material como criterio para localizar las imperfecciones o anomalías que en un compuesto. Usando el método de elementos finitos se modelaron barras sometidas a transferencia de calor por conducción unidimensional. Un problema de autovalores es desarrollado a partir de las ecuaciones diferenciales del…



Primary yield and multitranche structure in securitization issues: Explicative factors. A review

Repositorio: Scipedia Open Access
Á. Peña-Cerezo, Miguel, Rodríguez-Castellanos, Arturo, Ibáñez-Hernández, Francisco

The reasons for the strong rise in the securitization phenomenon up until the start of the “subprime crisis” need to be analysed. According to many authors, they mainly stem from its offering the possibility of generating fixed yield securities with the highest rating and a low risk premium, thanks to the issues being structured in differentiated bond series, so that certain series absorb most of the risk, thus facilitating the safer or “senior” tranches having a higher rating. Accordingly,…



Emotions and Eating Behavior

Repositorio: Scipedia Open Access
Fernández, Elizabeth, Martínez, Lucy

The present study focuses on identifying which meals are more frequently consumed by university students and which emotions are experienced during feeding. The sample consisted of 819 participants, male and female (average age 22 years old). General results indicate that emotions experienced by university students while taking their meals are mainly positive (enjoyment, pleasure, joy, happiness and love). Additionally, sex differences were identified in types of food and emotions reported by…



Simplified model for the study of the asymmetric rocking motion of slender rigid bodies

Repositorio: Scipedia Open Access
Peña, F.

This paper deals with the numerical modelling of rigid blocks by means of a rigid body spring model (RBSM). The hypothesis of small rotations has been considered in order to simplify the mathematical formulation. The asymmetric rocking motion is described. Extensive numerical simulations have been carried out in order to validate the numerical model, as well as to study the dynamical behaviour of asymmetric rigid bodies. The maximum response depends on the type of asymmetry and the direction of…



Structural assessment of gravity dams by means of a semi-discrete approach

Repositorio: Scipedia Open Access
Peña, Fernando

A new numerical model for the structural assessment of gravity dams by means of a semi-discrete approach is proposed. Gravity dams are massive structures, which their stability depends on the gravity loads applied into the structure. Mainly, its structural assessment is performed by means of a gravity approach. However, this approach is too conservative and mostly does not reflect the real structural behaviour of the dam. In this context, there is the need of models that are simplified enough…



Marginalized and Rebellious: Juan Ruiz de Alarcón and Fernando Zárate Castronovo, Playwrights

Repositorio: Scipedia Open Access
Muñoz, Margarita

This article offers a comparison between two plays: Mudarse por mejorarse by Juan Ruiz de Alarcón y Mudarse por mejorarse by Fernando Zárate Castronovo (ca. 1663) in order to examine the authors’ Jewish origins, personalities and biographies. Both of them suffered harassment from other authors (Alarcón) and from Spanish Inquisition (Zárate). Alarcón, who was an isolated but peaceful man, died in Madrid the 4th of August 1639. On the contrary, Zárate, who was rebellious and defeated, died at…



Análisis del comportamiento del contrato de distribución de ingresos en una cadena de abastecimiento frutícola

Repositorio: Scipedia Open Access
Peña Orozco, Diego León, Agudelo, Stiven, Rivera, Leonardo

Supply chains are systems characterized by inter-organizational and inter-functional relationships where the markets dynamics and lack of will towards collaborative relationships, lead to each member attempting to maximize their individual performance, generating inefficient global results. To address this problem, it is necessary to adopt appropriate coordination mechanisms to improve the global performance of the decentralized supply chain [10]. Among the coordination mechanisms are…



Application of Topic Maps to the Semantic Analysis of Calderón's Comedias

Repositorio: Scipedia Open Access
Pimentel, Miriam

This study presents a methodological proposal that can be applied to Calderón's comedias. Topic maps are a useful tool, both conceptual and methodological, that help to structure information for each play, without losing the sense of the text. By mapping the components of the work (characters, places, objects, etc.) and the relations among them (relations of meaning and significance), this study analyzes the plays for either a particular study of each comedia or for a…



European Newspapers’ Digital Transition: New Products and New Audiences

Repositorio: Scipedia Open Access
Fernández, Simón, Arrillaga, Iñaki, González, Daniel

The adaptation of traditional newspapers to new digital media and its interface, far from being a mere technical transformation, has contributed to a gradual change in the media themselves and their audiences. With a sample including the top general information pay newspaper in each of the 28 countries of the European Union, this research has carried out an analysis using 17 indicators divided in 4 categories. The aim is to identify the transformations that the implementation of digital media…



El lenguaje audiovisual y la formación del profesorado

Repositorio: Scipedia Open Access
Martínez, Fernando

Este artículo nos propone un interesante repaso por la historia de la formación del profesorado en sus dos dimensiones, la inicial y permanente, deteniéndose a analizar el aspecto concreto de la formación en medios audiovisuales y realizando su propia propuesta que pasa por la afirmación de que es absolutamente necesaria una formación de los dos tipos si queremos garantizar el éxito de la Reforma Educativa.



Cálculos de convección natural en una cavidad usando el método de segundos momentos,

Repositorio: Scipedia Open Access
Pepper, D.

A quasi-Lagrangian numerical method used primarily for environmental transport problems is used to solve the equation set for convective heat transfer within a differentially heated enclosure. The numerical method calculates the zeroth, first, and second moment distributions of vorticity and temperature within a cell. A Lagrangian procedure which uses the moment distributions is used to solve the advection terms in order to eliminate numerical dispersion errors. Since the method maintains…



Aplicaciones de la supercomputación en aerodinámica

Repositorio: Scipedia Open Access
Peraire, J., Peiro, J., Morgan, K., Hassan, O., Zienkiewicz, O.C.

El desarrollo de métodos de cálculo basados en el uso de mallas no estructuradas para la simulación de flujos compresibles de interés práctico en la industria aeronáutica ha progresado considerablemente en los ultimos años. En este artículo presentamos el estado actual de nuestro trabajo en este campo describiendo un algoritmo para la solución de las ecuaciones de Euler de flujo compresible en mallas no estructuradas de tetraedros que es eficiente en la utilización de memoria y tiempo de…



Mejora de la seguridad hidrológica e incremento de la capacidad de embalse de presas de fábrica mediante aliviaderos con cajeros altamente convergentes

Repositorio: Scipedia Open Access
Peraita, Peraita, J., J., Morán, Morán, R., R., Pellegrino, Pellegrino, Caballero, Caballero, F.J., F.J., Toledo, Toledo, M.Á., M.Á., Mauro, San, Salazar, Salazar, F., F., Flórez, Flórez, V., V., Labalde, Labalde, B., B., Salazar, Fernando

El empleo en aliviaderos de presas de fábrica de canales laterales para la recogida de los vertidos en la zona de estribos ha sido una solución utilizada con relativa frecuencia lo largo de la historia en casos en los que la longitud de vertido era sensiblemente superior a la anchura del valle aguas abajo de la presa. Este tipo de aliviaderos en presas existentes puede tener como objetivo el aumento de capacidad de su aliviadero o bien el aumento de los niveles m&…



From Digital Divide to Psycho-digital Divide: Elders and Online Social Networks

Repositorio: Scipedia Open Access
Peral, Begoña, Gaitán, Jorge, Ramos, Ángel

The present study analyzes the evolution of the concept of the digital gap with the elderly from the perspective of active ageing and in the context of the use of online social networks as a communication instrument. We consider that socio-demographic variables are not enough to explain the elderly’s use or non-use of Information and Communication Technologies (ICT). Psychological variables, such as cognitive age, technology anxiety and the level of adventurousness complement the former and can…



Educación ambiental y medios de comunicación

Repositorio: Scipedia Open Access
Palacios, Francisco, Ramírez, Nieves

Desde la gestación de la LOGSE, la Educación Ambiental se ha convertido en el genuino representante de las materias transversales a incorporar en el currículum escolar. Sin embargo, la escuela no acaba de hacer suyas estas recomendaciones de integración por distintas razones, entre las que sobresalen la escasez de medios y una insuficiente preparación del profesorado. Mientras tanto, el alumno sigue asistiendo como espectador pasivo a un…



Learning identity: what kind of children do children perceive when they watch TV?

Repositorio: Scipedia Open Access
Albert, Alejandro, Chica, Ángeles

This article shows some results of a present study about the main childhood stereotypes in TV programmes (soap operas, sitcoms), news and advertising. The application of content analysis makes it possible to describe the portrayal of children built by mass media, such as the «good wild» myth as a metaphorical image, at the same time that it shows punishment for the social transgression of rules.



El aprendizaje adulto a través del periódico

Repositorio: Scipedia Open Access
Ferreyra, Ilda

Hace ya varios años que en el Centro de Adultos “500 Viviendas” de Almería se está realizando una experiencia continuada a través del periódico, que ha ido gradualmente pasando del estudio del mismo a partir de talleres de prensa, hasta trabajos de globalización que han permitido lograr resultados de aprendizaje integrados plenamente en el currículum.



TV: the star screen

Repositorio: Scipedia Open Access
Ferreyra, Ilda

At the height of the information society, in a society permeated by communication media, screens take a special relevance thanks to technological advances. Television continues undoubtedly to be the star of all screens, channeling global culture as it is influenced by large information businesses, which in turn are under the command of world economic and political powers. The big challenge for educators –parents, teachers, leaders and communicators– is to acquire enough strength, initially, to…



TV: responsibility in socialization

Repositorio: Scipedia Open Access
Ferreyra, Ilda

TV has an ever-increasing power to penetrate into our homes, into public spaces and into our schools. This reality issues a challenge to parents, families, public administrations and to television channels themselves. Socialization, that is, the fitting of individuals to a common culture, is everyone’s responsibility in order to make the future more tolerant, supportive and democratic-essential for the survival of the human species in the 21st century. That is the reason why socialization must…



Comparative analysis between the maxent and the weighted least square shape functions in a collocation meshless method

Repositorio: Scipedia Open Access
F. Perazzo, F. Perazzo, F. Marchant, F. Marchant

In this article the behavior of a shape function based on the maximum entropy principle (maxent) is analyzed in a meshless collocation method, compared with a traditional fixed weighted least square shape function (FWLS). The maxent shape function used in this work has certain properties that are desired in a meshless collocation method, for example the positivity, the smooth and uniform aspect for different discretizations. Further, in the boundary, the approximation not depends of the shape…



Una metodología numérica sin malla para la resolución de las ecuaciones de elasticidad mediante el método de puntos finitos

Repositorio: Scipedia Open Access
Perazzo, F., Oñate, E., Miquel, J.

Las principales aportaciones de la tesis se pueden circunscribir a los siguientes ámbitos: Por un lado explicar y desarrollar la formulación del MPF para su utilización en problemas de la elasticidad lineal de sólidos. Hasta la fecha no se contaba con un análisis completo de la formulación del método, además no se contaba con un código que permitiese …



El método de puntos finitos para problemas de la dinámica de sólidos

Repositorio: Scipedia Open Access
Perazzo, Franco, Miquel, Juan, Oñate, Eugenio

En este trabajo se desarrolla la formulación del método sin malla de puntos finitos (MPF) para el ánlisis de problemas de la dinámica lineal de sólidos. El método utiliza una aproximación por mínimos cuadrados con una función de ponderación fija y un esquema de colocación puntual. Para resolver el sistema de ecuaciones dependientes del tiempo se han implementado un equema de integración temporal explícita de diferencias finitas centradas. Para mejorar la aproximación de la solución en las…



Avances en el método de puntos finitos para la mecánica de sólidos

Repositorio: Scipedia Open Access
Perazzo, Franco, Oller, Sergio, Miquel, Juan, Oñate, Eugenio

La evaluación del método sin malla de puntos finitos (MPF) para problemas de la mecánica de sólidos, hasta la fecha, se haefectuado usando medidas para cuantificar el error relativo tomando como base a una solución analítica conocida. En el presente trabajo se desarrolla un indicador del error para el MPF, basado en la evolución del funcional de mínimos cuadrados utilizado para el cálculo de la función de forma. La capacidad del indicador propuesto se analiza mediante el desarrollo de ejemplos…



A sample design proposal for the analysis of Twitter in political communication

Repositorio: Scipedia Open Access
Percastre-Mendizábal, Salvador, Pont-Sorribes, Carles, Codina, Lluís

Based on an analysis of several sampled political discussions on Twitter, a new methodology is proposed that allows researchers to obtain a significant, replicable, and manageable data sample from a universe of Twitter metadata. The proposal is a new model called Top discussion indicator (TDI). The aim of TDI is to assist researchers in obtaining a representative set of text from Twitter that includes the minimum amount of information needed to generalize the results.



A sample design proposal for the analysis of Twitter in political communication

Repositorio: Scipedia Open Access
Percastre-Mendizábal, Salvador, Pont-Sorribes, Carles, Codina, Lluís

Based on an analysis of several sampled political discussions on Twitter, a new methodology is proposed that allows researchers to obtain a significant, replicable, and manageable data sample from a universe of Twitter metadata. The proposal is a new model called Top discussion indicator (TDI). The aim of TDI is to assist researchers in obtaining a representative set of text from Twitter that includes the minimum amount of information needed to generalize the results.



El guión educativo: ¿es posible?

Repositorio: Scipedia Open Access
Verde, José

La premisa fundamental de la que se debe partir es que la televisión educativa no pretende sustituir al profesor como sugieren ciertos autores aficionados a la cienciaficción. La finalidad de un canal o franja de horario educativa es complementar, ayudar y sugerir al profesorado, convertirse en definitiva en una herramienta de trabajo en sus manos, jamás superponerse a la labor bien definida de la pedagogía directa. La televisión educativa es ante todo otro medio de expresión.



The interactive multimedia story

Repositorio: Scipedia Open Access
Verde, José, Calvo, Santiago

In this article we reflect upon the educational possibilities of interactive multimedia stories. After analysing the origins and the evolution of stories, we studied the innovations introduced by the multimedia convergence, the hypertext and interactivity in stories with educational objectives within the Information Society. We are also presenting an interactive multimedia story project developed by the Master of Communication and Education at the UAB.



Oral-gestural, writing, audio, audiovisual and… digital? The five degrees of communication in education

Repositorio: Scipedia Open Access
Verde, José, Calvo, Santiago

This article portrays an overview of the five degrees of comunication in education: oralgestural, writing, audio, audiovisual and digital. It highlights the changes introduced by the on-line scenario in the educational process, reflecting on the character of the student, the teacher and the relationship between them.



Next generation biorefineries will solve the food, biofuels, and environmental trilemma in the energy–food–water nexus

Repositorio: Scipedia Open Access
Zhang, Y.-H

The future roles of biomass and carbohydrate for meeting needs of food/feed, renewable materials, and transportation fuels (biofuels) remain controversial due to numerous issues, such as increasing food and feed needs, constraints of natural resources (land, water, phosphate, biomass, etc.), and limitations of natural photosynthesis, as well as competing energy conversion pathways and technologies. The goal of this opinion article is to clarify the future roles of biomass and biorefineries…



Image retrieval and visualization systems in stock photography agencies

Repositorio: Scipedia Open Access
Perdices-Castillo, Luisa, Perianes-Rodríguez, Antonio

The advent of the internet, the impact of digital photography and the ability to scan large volumes of images has revolutionized the stock photography agencies. The transformation from analogue to digital photography has involved a substantial change in daily work processes, providing a large number of images online. The present work will reveal the profile and the basic features that any stock photography agency must offer on issues such as image retrieval, on-screen visualization, and storage…



Image description in stock photography agencies

Repositorio: Scipedia Open Access
Perdices-Castillo, Luisa, Perianes-Rodríguez, Antonio

Digital images are all around and their number increases every day. However, this growing volume contrasts with a poor description in the vast majority of cases. The value of a picture to illustrate the original event, or to be used in other contexts or situations, is based on an appropriate description. The purpose of this paper is to reduce the difficulties encountered in describing images by categorizing them and the agencies, specifying uses, and exemplifying descriptive differences. The…



Acerca de la importancia del manejo de información durante desastres naturales

Repositorio: Scipedia Open Access
Perdomo, José

Editorial: Acerca de la importancia del manejo de información durante desastres naturales



Acerca de la importancia del trabajo colaborativo en el desarrollo de proyectos en riesgo de ser expuestos a desastres naturales

Repositorio: Scipedia Open Access
Perdomo, José, Cavallín, Humberto

Editorial: Acerca de la importancia del trabajo colaborativo en el desarrollo de proyectos en riesgo de ser expuestos a desastres naturales



Un modelo para estimar la productividad de camiones usados para movimiento de tierra en obras de infraestructura

Repositorio: Scipedia Open Access
Perdomo, José, Martínez, Julio

Las operaciones de movimiento de tierra son parte fundamental de la mayoría de los proyectos de construcción de infraestructura. Para obtener ganancias cuando se trabaja en estas operaciones, la creación de un plan y la selección del equipo apropiado son aspectos críticos para maximizar la productividad. Obtener la máxima productividad es una tarea que puede ser muy difícil. Para planificar la obra, se debe conocer los tiempos de viaje de los camiones. El tiempo de viaje es una variable que…



Use of 3D technologies in high patrimonial value document digitalization and dissemination

Repositorio: Scipedia Open Access
Pereira-Uzal, José-Manuel, Robledano-Arillo, Jesús

We analyze the limitations of two-dimensional (2D) raster digital images for graphic representation of documents with volume or three-dimensional (3D) elements, proposing a visual model based on 3D techniques that complements the visual information conveyed by the 2D raster images that are usually offered in digital archives or library services. The proposed model concurrently applies stereoscopic photography techniques, reflectance transformation imaging (RTI) and 3D models obtained by…



Augmentation Cystoplasty using modified Studers Orthotopic Ileal Neobladder tecnhique

Repositorio: Scipedia Open Access
Silva, Ricardo, Reis, José, Lopes, Tomé

Although exceedingly rare in developed countries nowadays, we still come across some devastating sequels of genitourinary tuberculosis, requiring careful medical evaluation and expertise on surgical reconstruction. A 58‐year‐old man, previously submitted to a right nephrectomy, developed a life‐threatening episode of urosepsis, leading to the need of a percutaneous nephrostomy due to a long stricture of the terminal ureter of the remaining left kidney. The patient had also developed very severe…



Educar para un uso crítico de la televisión en educación infantil

Repositorio: Scipedia Open Access
Pereira, Sara

Hoy los niños de todos los países están expuestos a unas altas dosis de consumo televisivo, que demandan de toda la sociedad, y muy especialmente de los educadores, reflexiones en torno a sus posibles consecuencias. La autora de este trabajo refleja la experiencia llevada a cabo en un Jardín de Infancia del norte de Portugal para integrar la televisión en el currículum escolar, haciendo a los niños y niñas reflexionar ya a estas tempranas edades, a partir de sus experiencias diarias, sobre sus…



Simulaçao numérica do escoamento de fluido nao-newtoniano em duto parcialmente bloqueado

Repositorio: Scipedia Open Access
Pereira, Roberto

Simulou-se numericamente o escoamento de uido nao-newtoniano do tipo puramente viscoso em duto parcialmente bloqueado. Este bloqueio, resultando em uma variacao na seçao reta do duto, impoe ao escoamento uma brusca contraçao e expanso circular, alem de uma regiçao de seçao reta reduzida. Sao apresentados resultados para a força de arrasto atuante no bloqueio ao escoamento, em funçao: do expoente power-law do uido; do regime hidrodinâmico do escoamento e de diferentes razões de aspecto. O codigo…



Quality in children’s television

Repositorio: Scipedia Open Access
Pereira, Sara

With this presentation we try to reflect upon the concept of quality with regards to television for children. In addition, we aim to identify a set of criteria which can allow us to recognize and evaluate the quality of programming for younger audiences. This analysis is based both on the contribution of different authors that have studied quality in television and on the opinions of professionals who intervene and pay especial attention to programming for children in Portugal. The opinions of…



Backstage of TV for children: criteria underlying programming construction

Repositorio: Scipedia Open Access
Pereira, Sara

What is usually known about television for children are the programmes broadcast. In contrast, the underlying criteria as well as their conditioning factors are largely unknown. This paper aims to unveil the television backstage, presenting and analysing the logics and strategic options that shape the conception, production and broadcasting of programming for children. In this way, this paper also intends to contribute to a well-grounded knowledge about a reality quite present in children’s…



Lope, Reader of Jorge Ferreira de Vasconcelos

Repositorio: Scipedia Open Access
Pereira, Silvina

This work takes as its starting point Eugenio Asensio’s affirmation that the greatest admirer of Jorge Ferreira de Vasconcelos and his comedies would have been Lope de Vega. He attempts to prove this thesis by pointing out the similarities between the Eufrosina (1555) and Lope’s La Dorotea (1632) and, to a certain extent, even the Aulegrafia (1619). Other points of contact between the lives and works of these two great figures of the Iberian theater are also considered, in order to understand…



Los padres ante la publicidad y el consumo

Repositorio: Scipedia Open Access
Domínguez, María, Marra, Santa

Se describe en esta colaboración el proceso de implantación y seguimiento de la Escuela de Padres y Madres que se inició en Ourense desde 1994 a 1997. En concreto el artículo se centra en el bloque temático denominado: «El binomio publicidad-consumo. Reflexión desde el prisma familiar». Los objetivos de la experiencia se centraban en implicar a los padres en el proceso educativo de sus hijos, mejorando sus niveles de competencia, considerando a la familia como primera institución de modelado,…



A divide and conquer approach to cope with uncertainty, human health risk, and decision making in contaminant hydrology

Repositorio: Scipedia Open Access
Pereira, Felipe, Bolster, Diogo, Sánchez-Vila, Xavier, Nowak, Wolfgang

Assessing health risk in hydrological systems is an interdisciplinary field. It relies on the expertise in the fields of hydrology and public health and needs powerful translation concepts to provide decision support and policy making. Reliable health risk estimates need to account for the uncertainties and variabilities present in hydrological, physiological, and human behavioral parameters. Despite significant theoretical advancements in stochastic hydrology, there is still a dire need to…



Resources for Media Literacy: Mediating the Research on Children and Media

Repositorio: Scipedia Open Access
Pereira, Sara, Pinto, Manuel, Pereira, Luis

Much has been said and written about media education, its relevance and goals. Beyond directives, resolutions or recommendations, research in this area has deepened the foundations of media education but has also emphasized its weak points or faults. One of these critical points noted in the training and research work developed at the University of Minho, Portugal, in the last 20 years is the non-existence of resources and materials that could be used to promote media education in different…



Young people learning from digital media outside of school: The informal meets the formal

Repositorio: Scipedia Open Access
Pereira, Sara, Fillol, Joana, Moura, Pedro

The dissonance between what teenagers learn in classrooms and their everyday lives is not a recent phenomenon, but it is increasingly relevant as school systems are unable to follow the evolution of media and society beyond traditional concerns regarding the protection of young people. An overly scholarly view of learning continues to prevail in our society, which seems to marginalize the knowledge that young people develop with and through media and digital platforms. Based on questionnaires,…



Simulaçao numérica do escoamento confinado de fluido polimérico em presença de obstáculo

Repositorio: Scipedia Open Access
Pereira, R.G., Braga, W., Frota, M.N.

O presente código numérico utilizando formulaçao primitiva e malhas nao-deslocadas foi desenvolvido para resolver o escoamento de fluidos nao-newtonianos puramente viscosos. As equaçoes de momentum sao resolvidas usando um método tridiagonal em bloco de dois permitindo o acoplamento das equaçoes durante a soluçao. A equaçao de pressao, obtida através do uso da equaçao da continuidade, é resolvida pelo método SOR. Resultados numéricos para o escoamento confinado en regime permanente de fluidos…



Testimonials in health-related radio advertising in Spain and their regulation (2009-2016)

Repositorio: Scipedia Open Access
Perelló-Oliver, Salvador, Muela-Molina, Clara, Campos-Zabala, María-Victoria

The objective of this work is to analyze the nature of testimonials that advertise products with alleged health benefits, the testimonial characteristics and the evolution in Spanish radio. The study of quantitative and multistage nature is based on the content analysis of radio spots from two different time samples: 1,664 spots in 2009 and 3,909 in 2016 which, after the required data filtering process, were reduced to 147 and 122 testimonials, respectively. One of the implications derived from…



La agresividad ambiental y la durabilidad de las estructuras de hormigón

Repositorio: Scipedia Open Access
Perepérez, B., Barberá, E., Andrade, Carmen

The deterioration of concrete structures is the result of the interaction between them and the environment. In this study, comments are made on the most decisive environmental factors and their interactions. Special reference is made to the corrosion of the reinforcements and also to the different proposals of classification of the aggressiveness. El deterioro de las estructuras de hormigón es el resultado de la interacción entre ellas y el medio ambiente. En el presente…



Immersió lingüística a Catalunya, identitat i imatge

Repositorio: Scipedia Open Access
Perera, Santiago, -, Arantza, Monreal, Pilar, Vila, Ignasi

The authors analyze the question of whether there is a mimetic correlation between the conservation of Catalan and the maintenance of a cultural and national identity. They study the self-inclusion, if any, of youths between six and fifteen years of age in national groups -Catalan or Spanish- according to the language spoken at home and at school, together with the images and feelings they construe in relation to other European national groups.



Arsenic and Cadmium Contamination in Water, Sediments and Fish is a Consequence of Paddy Cultivation: Evidence of River Pollution in Sri Lanka

Repositorio: Scipedia Open Access
Perera, PA, Sundarabarathy, Thenmoli, Sivananthawerl, Thavananthan, Kodithuwakku, Suranga, Edirisinghe, Udeni

The upper Malwathu Oya is a seasonal river. The main livelihood of people living in the immediate vicinity of the river is paddy cultivation, and chronic kidney disease is reported among them. Farmers utilize different types of agricultural chemicals in their fields expecting bumper harvests. Several agricultural chemicals have been reported to contain toxic trace elements in Sri Lanka. Therefore, arsenic and cadmium might end up in the river water. The presence of these trace elements in the…



Simulación de excavaciones mediante un método de acoplamiento elementos finitos-elementos de contorno

Repositorio: Scipedia Open Access
Perera, Ricardo, Ruiz, Antonio, Alarcón, Enrique

Cuando se modelan sistemas fisicos no lineales de extension infinita, como las excavaciones, se hace necesario simular adecuadamente tanto la solucion en el infinito como la no linealidad. El metodo de elementos finitos es una herramienta efectiva para representar la no linealidad. Sin embargo, el tratamiento del campo infinito truncando el dominio es bastante cuestionable. Por otro lado, el metodo de elementos de contorno es adecuado para simular el comportamiento en el infinito sin…



Numerical modeling of FSW welding process incorporating a parameter estimation technique

Repositorio: Scipedia Open Access
Pereyra, S., Lombera, G.A., Urquiza, S.A.

Numerical models of heat transfer and fluid flow used in the simulation of the friction-stir welding (FSW) process have contributed to the understanding of the process. However, there are some input model parameters that cannot be easily determined from fundamental principles or the welding conditions. As a result, the model predictions are not always in agreement with experimental results. In this work, the Levenberg-Marquardt (LM) method is used in order to perform a non-linear estimation of…



Analysis of the coating integrity during a coronary stent deployment

Repositorio: Scipedia Open Access
O. Pérez-Acosta, O. Pérez-Acosta, E. Lorenzo-Bonet, E. Lorenzo-Bonet, B. Verhegghe, B. Verhegghe, M. Rodríguez-Madrigal, M. Rodríguez-Madrigal, T. Rodríguez-Moliner, T. Rodríguez-Moliner

The cardiovascular diseases constitute one of the main causes of death worldwide. One of the main diseases is atherosclerosis, which causes narrowing of the arterial lumen. In order to solve this condition, several treatments have been developed, and Percutaneous Transluminal Coronary Angioplasty (PTCA) with the placement of stent have gained relevancy. Many of these devices are currently coated to increase the biocompatibility and to decrease the restenosis risks. The biomechanical studies of…



Pharmacotherapeutic profile and quality of life in elderly patient on primary care in Manizales, Colombia

Repositorio: Scipedia Open Access
Pérez-Agudelo, Juan Manuel, Salazar-Pineda, Andrés, Ceballos-Camacho, Sergio, Daza-Chica, José, Serna-Yepes, Erika, Fonseca-Saavedra, Germán

Introduction: The pharmacological management of the elderly is not only a challenge for the doctor but also for the patient. These patients present physiological changes that affect drug pharmacokinetics, altered also by the comorbidities of each patient and the pharmacological interactions, more frequently due to greater consumption of medications. Polypharmacy generates inadequate adherence, more pharmacological interactions, and increased adverse reactions (ADR) that compromise quality of…



Recuperación de información, procesamiento de lenguaje natural y web semántica

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

UNO DE LOS TÉRMINOS MÁS UTILIZADOS cuando nos referimos a la Web es Web semántica. “Como si de Harry Potter se tratara, todo experto en internet que se precie, debe conocer estas dos palabras mágicas símbolo del futuro de una internet más ordenada, más organizada, más catalogada, en definitiva más bibliotecaria” (Eva Méndez).



Información = Matemáticas

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

EN PLENO SIGLO XVIII Michael Faraday sentó las bases del electromagnetismo a partir de muchas horas de laboratorio. Desgraciadamente, este famoso científico carecía de conocimientos matemáticos suficientes como para formalizar sus observaciones de manera que pudiesen ser expresadas en términos matemáticos. Hizo falta esperar 100 años para que otro eminente científico, James Maxwell, formalizara las observaciones de Faraday en sus ya famosas ecuaciones del campo electromagnético. El…



Sobre la gratuidad del software libre

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

El software libre no tiene porque ser gratuito, lo que si es obligatorio es que el código fuente esté disponible, además de otras exigencias de las licencias GNU/GPL, Apache, etc., entre las cuales muchas veces hay discrepancias.



La web semántica es sólo una promesa

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

La Web semántica aún parece una promesa de futuro, y corre el riesgo de pasarle como a muchos jugadores de fútbol, que se quedan en promesas y luego nunca llegan a nada. Existen los lenguajes, que de eso se encarga el W3C y compañía, pero no existe la información marcada o anotada con esos lenguajes, ni existe el software destinado a interpretar esos lenguajes. La mayoría del software que se usa hoy en día en Web semántica son prototipos destinados a la investigación, y aún están lejos, muy…



The new generation of search engines based on natural language processing

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

Current trends in natural language processing and information retrieval are briefly analysed to show their impace on the search engine market. Powerset and Hakia are highlighted as the main agents of this change.



Information recovery in business and industry

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

A workshop on the search engine market, organized by Atos Origin in Madrid, is described. The key players in Spain’s market, from Google to the national distance learning university, attended the meeting to show their products and to comment on their view of the marketplace for web and enterprise search engines.



Document engineering vs. artisan documentation: Which model should we follow?

Repositorio: Scipedia Open Access
Pérez-Agüera, José-Ramón

The work is focused on the present and future features of our profession. Especially we are taken into account the modernization needs of Information and Library Science. We propose that this modernization must come from the application of the Computer Science technologies which permit us to draw a new horizon for this area for the next 20 years.



More on iSchools

Repositorio: Scipedia Open Access
Pérez-Agüera, José

The author reflects on the iSchools movement and the need to increase the study of computing in LIS courses. He argues that libraries and archives are only a tiny portion of the places information professionals might work, although library topics occupy almost the entire content of the coursework. The iSchools concept applied in the School of Library and Information Science, University of North Carolina at Chapel Hill, is analysed. The iSchools try to integrate the concept of information from…



Computational fluid dynamics simulation of cooling system for copper smelter gases by Teniente Converter with evaporative cooler

Repositorio: Scipedia Open Access
S. Pérez-Cortes, S. Pérez-Cortes, Y. Aguilera-Carvajal, Y. Aguilera-Carvajal, J. Hurtado-Cruz, J. Hurtado-Cruz, J.P. Vargas-Norambuena, J.P. Vargas-Norambuena

In the copper sulfides smelting process, the Teniente-type converter generates highly corrosive and toxic gases, which is why treating them is crucial in order to avoid environmental damage. The present study proposes a new methodology to simulate the capture and cooling system of smelting gases through the application of Computational Fluid Dynamics (CFD) to the gases that emanate from a Teniente-type converter, where a series of assumptions that allow the adaptation of the physical model for…



Política de influencia y tendencia fake en Twitter. Efectos postelectorales (21D) en el marco del Procés en Cataluña

Repositorio: Scipedia Open Access
Pérez-Curiel, Concha, García-Gordillo, Mar

Que Twitter ha revolucionado la manera de hacer política no es novedad; tampoco lo es su capacidad de viralización, mediatización y activismo ciudadano. En paralelo, la personalización del candidato político alcanza un elevado índice de respuesta usuaria (me gusta, retweets y comentarios) que supera la actividad del propio partido. En el contexto de las postelecciones catalanas del 21D, el objetivo de este estudio es conocer a partir de una metodología triangulada de análisis de contenido, las…



Digital Skills in the Z Generation: Key Questions for a Curricular Introduction in Primary Schoolq

Repositorio: Scipedia Open Access
Pérez-Escoda, Ana, Castro-Zubizarreta, Ana, Fandos-Igado, Manuel

Media convergence and massive usage of Internet-connected devices, distinguishing features of our current society, cause changes in the way that new generations learn and access knowledge. In addition, emerging new digital skills are necessary for the Z generation to face the challenges of a digital society. This quantitative study, with a sample of 678 Primary School students, aims to provide empirical evidence about the level of digital skills of students belonging to this generation. The…



Modernity, reflexivity and postnormal science in risk society

Repositorio: Scipedia Open Access
Flores, Rosa

This article aims to show the main proposals of Ulrich Beck about how the technological risks function in the context of the so-called second modernity, in order to expose their implications in terms of new forms of reflexivity in complex societies. We analyze the relationship between reflexivity, scientific knowledge and epistemological pluralism to understand how technological risks, posed with an increasing force, question the authority of science, therefore leading to new areas of…



Plastic flow potential for cone region on the MRS-Lade model

Repositorio: Scipedia Open Access
Pérez-Foguet, A., Huerta, Antonio

The original formulation of the MRS-Lade model, with nonassociated flow rule on the meridian plane in the cone region, has a corner. In order to reduce the computational effort of corner solution algorithms, a modified plastic flow potential for the cone part is found in the literature. This modification may have a nonadmissible flip over of the flow vector in the cone-cap intersection if the plastic flow potential is not correctly defined. Here a corrected plastic flow…



Numerical differentiation for Non-Trivial consistent tangent matrices: An application to the MRS-Lade model

Repositorio: Scipedia Open Access
Pérez-Foguet, A., Rodríguez-Ferran, A., Huerta, A.

In Reference the authors have shown that numerical differentiation is a competitive alternative to analytical derivatives for the computation of consistent tangent matrices. Relatively simple models were treated in that reference. The approach is extended here to a complex model: the MRS-Lade model. This plastic model has a cone-cap yield surface and exhibits strong coupling between the flow vector and the hardening moduli. Because of this, derivating these quantities with respect to stresses…



Numerical differentiation for non-trivial consistent tangent matrices: an application to the MRS-lade model

Repositorio: Scipedia Open Access
Pérez-Foguet, Agustí, Rodríguez-Ferran, Antonio, Huerta, Antonio

In a companion paper Pérez-Foguet, A., Rodríguez-Ferran, A. and Huerta, A. Numerical differentiation for local and global tangent operators in computational plasticity. Computer Methods in Applied Mechanics and Engineering, 2000, in press, the authors have shown that numerical differentiation is a competitive alternative to analytical derivatives for the computation of consistent tangent matrices. Relatively simple models were treated in that reference. The approach is…



Key issues in computational geomechanics

Repositorio: Scipedia Open Access
Pérez-Foguet, A., Rodríguez-Ferran, A., Huerta, A.

As stated in the introduction, the three main topics covered in this report are actual research fields. Different analyses and new developments related with these fields have been presented in the previous chapters. In the following, after a brief summary of the contributions, some directions for future research are outlined. Detailed presentations of the conclusions of each contribution are included in the corresponding sections and subsections. The most relevant contributions of this report…



Consistent tangent matrices for substepping schemes

Repositorio: Scipedia Open Access
Pérez-Foguet, Agustí, Rodríguez-Ferran, Antonio, Huerta, Antonio

A very simple and general expression of the consistent tangent matrix for substepping time-integration schemes is presented. If needed, the derivatives required for the computation of the consistent tangent moduli can be obtained via numerical differentiation. These two strategies (substepping and numerical differentiation) lead to quadratic convergence in complex nonlinear inelasticity problems.



Efficient and accurate approach for powder compaction problems

Repositorio: Scipedia Open Access
Pérez-Foguet, Agustí, Rodríguez-Ferran, Antonio, Huerta, Antonio

In this paper, a new approach for powder cold compaction simulations is presented. A density-dependent plastic model within the framework of finite strain multiplicative hyperelastoplasticity is used to describe the highly nonlinear material behaviour; the Coulomb dry friction model is used to capture friction effects at die-powder contact; and an Arbitrary Lagrangian–Eulerian (ALE) formulation is used to avoid the (usual) excessive distortion of Lagrangian meshes caused by large mass…



Dimensionless analysis of HSDM and application to simulation of breakthrough curves of highly adsorbent porous media

Repositorio: Scipedia Open Access
Pérez-Foguet, Agustí, Casoni, Eva, Huerta, Antonio

The homogeneous surface diffusion model (HSDM) is widely used for adsorption modeling of aqueous solutions. The Biot number is usually used to characterize model behavior. However, some limitations of this characterization have been reported recently, and the Stanton number has been proposed as a complement to be considered. In this work, a detailed dimensionless analysis of HSDM is presented and limit behaviors of the model are characterized, confirming but extending previous results. An…



Technology watch in the metal industrial SMEs: knowledge, application and assessment

Repositorio: Scipedia Open Access
Pérez-González, Daniel, Placer-Maruri, Emilio

The complexity of the economic and technological environment requires companies to improve their competitiveness through innovation. In this context technology watch (TW), a systematic process that supports innovation, becomes an essential tool. In the literature, interest in TW has evolved from the definition of the concept, implications and resources to its practical development, focused on case studies in large organizations. However, there is a lack of works that analyze its use and results…



Educación y biblioteca, a unique professional journal

Repositorio: Scipedia Open Access
Pérez-Iglesias, Javier

The journal Educación y biblioteca (Education and the library) accompanied the Spanish public libraries in the great change that took place over three decades. Since the late 80s of the 20th century, Spanish libraries have undergone a process of modernization and engagement with their audiences. Educación y biblioteca encouraged these changes and brought together a stream of librarianship committed to social action by libraries, public service values and the democratization of culture. During…



Gamification and transmedia for scientific promotion and for encouraging scientific careers in adolescents

Repositorio: Scipedia Open Access
Pérez-Manzano, Antonio, Almela-Baeza, Javier

The current growth in gamification-based applications, and especially in what is known as Digital Game-based Learning (DGBL), is providing new opportunities with considerable educational potential. In the present study, we report on the results of the progress of a project for developing a setting for a gamified website carried out ad hoc, complemented by transmedia resources and aimed at scientific promotion and the promotion of technological and scientific careers (S&T) in adolescents…



Collaborative Construction of a Project as a Methodology for Acquiring Digital Competences

Repositorio: Scipedia Open Access
Subirà, María, Carbonell, Marc, Fontanillas, Teresa

As a result of the emergence of Information and Communication Technologies (ICT) we are currently experiencing a period of major changes. Higher education plays a key role in helping students to acquire the competences which enable them to be autonomous in both academic and professional environments, where ICT literacy and collaborative processes are considered crucial. This study analyzes students’ perceptions about how the collaborative construction of an online project facilitates the…



Information architecture in the web environment

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

Information architecture (IA), which is based on the classical principles of solid traditional Information Science, was born in the late ‘90. This discipline deals with structuring, organizing and tagging elements of informational environments to facilitate searching and retrieval of information they contain, thereby improving the usefulness and applications of IA. Main systems or structures that build a website’s architectonic anatomy are the organization systems, labeling systems, navigation…



Visualization in information retrieval: Standards, trends and limitations

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

The evolution of the information retrieval discipline has not been sensitive to developing the display of results. In many cases, the results presentation is as important as the selection of the retrieved documents in satisfying the user’s information needs. However, it is possible to identify a number of standard models and certain trends in the visual presentation of results in a retrieval system. This study analyzed the patterns and trends and established a series of requirements (…



University policies on information dissemination through their institutional websites

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

Information dissemination has become a critical element of universities’ strategic plans. Concerned about their position in the international rankings that evaluate this kind of institutions, universities also begin to worry about their information dissemination strategies and their institutional websites. This article addresses the main functions of the university website; the process of analysis, design and implementation in the production of this kind of websites; the minimum elements to be…



Information visualization: between aesthetic impact and effective communication

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

Nowadays, visualization is used in all contexts. However, there is a gap or mismatch between the intensive use of visualization and our low level of visual knowledge. The creation and proper use of effective information visualizations is constrained by rules or principles that guarantee their effectiveness in communicating a message. Many of these principles come from psychology and, specifically, from the theory of perception. Other principles emerge from the structure of information and the…



Information visualization in cybermedia

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

The implementation and global expansion of the internet has affected all areas of our society. This influence has forced the media to revise their business models by creating new production and distribution processes and ultimately pushing out new digital versions (online media or cybermedia) of their publications. In this new digital environment information visualization plays a key role in marketing plans and user retention. This trend can be further understood by exploring the distinction…



Knowledge management: origins and evolution

Repositorio: Scipedia Open Access
Pérez-Montoro, Mario

Since its origins, the discipline of knowledge management has had a unique evolution: going strong at first, followed by solid development, but currently falling into languid stagnation. In this paper we analyze this trajectory by describing the founding context of the discipline and reviewing its evolution using two indicators, the heightened interest in recent decades and the annual scientific production (monographs and articles in indexed journals). Finally, the ecosystem of university…