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Search Results: 1 - 10 of 136103 matches for " VíCTOR IGLESIAS ARGüELLES "
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El valor percibido: una aplicación empírica en clientes industriales de electricidad y gas natural en mercados energéticos liberalizados
García Acebrón,Constantino; Vázquez Casielles,Rodolfo; Iglesias Argüelles,Víctor;
Innovar , 2008,
Abstract: the present article was aimed at going deeper into the concept of perceived value. by adopting a multidimensional structure we tried to contrast which of the two models (reflexive or formative) best suited the concept of perceived value. we also analysed whether the concepts obtained from the reflexive and formative scales were equivalent and, therefore, whether there were significant differences between them. the segment consisting of industrial clients for electricity and natural gas in the spanish liberalised energy market was subjected to empirical analysis.
Brand equity: perspectives of analysis and estimation criteria
Cuadernos de Gestión , 2001,
Abstract: An important issue was raised for discussion trough the last decade regarding the meaning of brand equity. Different forms of analysis and estimation criteria have been applied, and that is the reason for the current ambiguity on its meaning. In this article, we present a theoretical frame were several forms of study and criteria for brand equity estimation are empirically analysed. Using six different brands of training shoes, seven estimation variables are empirically analysed in accordance with the opinions given by a sample of users for these different brands. By means of this analysis, it is our aim to contribute to a better knowledge on he concept of brand equity.
Comportamiento de abandono de la relación de un cliente con la empresa en un contexto de fallo y recuperación del servicio
Concepción Varela Neira,Rodolfo Vázquez Casielles,Víctor Iglesias Argüelles
Cuadernos de Economía y Dirección de la Empresa , 2009,
Abstract: El objetivo de este trabajo es explorar los factores y circunstancias que llevan a los clientes a abandonar a su proveedor de servicios cambiándolo por un proveedor alternativo. Observaremos si el comportamiento de la empresa tras el fallo puede llegar a reducir la tasa de abandono, así como el efecto de determinadas variables situacionales como la presencia de barreras al cambio y de alternativas atractivas. El modelo propuesto se contrasta utilizando una muestra de consumidores de servicios financieros que experimentaron algún tipo de fallo. Los resultados muestran que, si bien la insatisfacción tras el fallo tiene un efecto importante en la probabilidad de abandono de los clientes, existen otros factores relevantes tales como la respuesta de la empresa a la queja, las barreras al cambio negativas, la ausencia de alternativas atractivas y la antigüedad de la relación. Por ultimo, los resultados revelan que las barreras de cambio positivas moderan la relación entre la satisfacción con la respuesta a la queja y el comportamiento de abandono de los clientes.
Comprehensive Model of Jumbo Squid Dosidicus gigas Trophic Ecology in the Northern Humboldt Current System
Ana Alegre, Frédéric Ménard, Ricardo Tafur, Pepe Espinoza, Juan Argüelles, Víctor Maehara, Oswaldo Flores, Monique Simier, Arnaud Bertrand
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0085919
Abstract: The jumbo squid Dosidicus gigas plays an important role in marine food webs both as predator and prey. We investigated the ontogenetic and spatiotemporal variability of the diet composition of jumbo squid in the northern Humboldt Current system. For that purpose we applied several statistical methods to an extensive dataset of 3,618 jumbo squid non empty stomachs collected off Peru from 2004 to 2011. A total of 55 prey taxa was identified that we aggregated into eleven groups. Our results evidenced a large variability in prey composition as already observed in other systems. However, our data do not support the hypothesis that jumbo squids select the most abundant or energetic taxon in a prey assemblage, neglecting the other available prey. Indeed, multinomial model predictions showed that stomach fullness increased with the number of prey taxa, while most stomachs with low contents contained one or two prey taxa only. Our results therefore question the common hypothesis that predators seek locally dense aggregations of monospecific prey. In addition D. gigas consumes very few anchovy Engraulis ringens in Peru, whereas a tremendous biomass of anchovy is potentially available. It seems that D. gigas cannot reach the oxygen unsaturated waters very close to the coast, where the bulk of anchovy occurs. Indeed, even if jumbo squid can forage in hypoxic deep waters during the day, surface normoxic waters are then required to recover its maintenance respiration (or energy?). Oxygen concentration could thus limit the co-occurrence of both species and then preclude predator-prey interactions. Finally we propose a conceptual model illustrating the opportunistic foraging behaviour of jumbo squid impacted by ontogenetic migration and potentially constrained by oxygen saturation in surface waters.
Topic tacrolimus, alternative treatment for oral erosive lichen planus resistant to steroids: A case report
Ria?o Argüelles,Ana; Martino Gorbea,Raúl; Iglesias Zamora,María Eugenia; Garatea Crelgo,Joaquín;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2006,
Abstract: the lichen planus is a mucocutaneous disease with unknown etiology and auto-immune pathogenia. there have been three variants of lichen planus: the reticular, the plaque-like and the atrophic-erosive lesions. it?s a chronic disease with acute relapses that generally affects more frecuently to women from the fourties. the diagnostic is based on the clinic identification of the lesions joined with the histopathologic study (basal cells hidropic degeneration, linfoplasmocitic infiltration and absence of displasy signs). the great number of therapeutic options are explained for its high prevalency (0.5-2%), its recurrence and its risk for malignant transformation. we present a case of oral erosive lichen planus, refractory to numerous treatments, mainly corticosteroids. during 15 days the lesion responded to the administration of a 0.1% tacrolimus in topic application. this article tries to show the new indication of tacrolimus, a calcineurin inhibitor immunosuppressor, that it is effective in the erosive lesions treatment.
Fractal metrology for biogeosystems analysis
V. Torres-Argüelles,K. Oleschko,A. M. Tarquis,G. Korvin
Biogeosciences Discussions , 2010, DOI: 10.5194/bgd-7-4749-2010
Abstract: The solid-pore distribution pattern plays an important role in soil functioning being related with the main physical, chemical and biological multiscale and multitemporal processes. In the present research, this pattern is extracted from the digital images of three soils (Chernozem, Solonetz and "Chocolate'' Clay) and compared in terms of roughness of the gray-intensity distribution (the measurand) quantified by several measurement techniques. Special attention was paid to the uncertainty of each of them and to the measurement function which best fits to the experimental results. Some of the applied techniques are known as classical in the fractal context (box-counting, rescaling-range and wavelets analyses, etc.) while the others have been recently developed by our Group. The combination of all these techniques, coming from Fractal Geometry, Metrology, Informatics, Probability Theory and Statistics is termed in this paper Fractal Metrology (FM). We show the usefulness of FM through a case study of soil physical and chemical degradation applying the selected toolbox to describe and compare the main structural attributes of three porous media with contrasting structure but similar clay mineralogy dominated by montmorillonites.
El proceso de concentración de la Banca espa ola entre 1977 y 1996
Julio Argüelles álvarez
Política y Sociedad , 1998, DOI: -
Abstract: Sin resumen
Evaluación y calificación de resúmenes de textos expositivos en el aula de ILE/IFE: la guía "BABAR"
Irina Argüelles álvarez
Ibérica , 2004,
Abstract: Los estudiantes de Inglés para Fines Específicos (IFE) practican la técnica del resumen en el aula cuando trabajan con textos expositivos relacionados con sus estudios. Si se lleva el resumen al aula dentro de una perspectiva pedagógica en la que ense anza y evaluación se entienden como ligadas en el sistema de ense anza-aprendizaje, se llega a la cuestión de cómo evaluar el resumen escrito por un estudiante. Para que sea formativa, la evaluación debe responder a distintas preguntas: Qué está bien? Qué está peor? Qué puede hacerse para mejorar? En el caso concreto del resumen, no es sólo importante la calidad de la expresión escrita, sino que debe tenerse en cuenta también la calidad con la que el escritor recoge el mensaje en general y, en particular, las ideas básicas de un texto origen; además, en el contexto de IFE intervienen factores lingüísticos fundamentales. Aunque se han propuesto baremos para evaluar la expresión escrita, es difícil encontrar guías para evaluar resúmenes y, por esta razón, este trabajo repasa algunas de las propuestas de evaluación de la expresión escrita más conocidas y aporta un baremo para la calificación de resúmenes de textos expositivos en el aula de IFE.
Irina Argüelles álvarez
Revista de Lingüística y Lenguas Aplicadas , 2009, DOI: 10.4995/rlyla.2009.730
Abstract: This article builds on one particular initiative that has been developed for over a year and brings blearning to the English for Professional Purposes classroom within a learner-centred context. The first section is dedicated to the description of the conditions that have framed the experience. Then the steps taken to adapt the materials of the subject "Professional Communication" to the b-learning environment MOODLE are addressed. This part also examines the evolution of the subject towards autonomous language learning goals and a negotiated syllabus design more suitable for b-learning. The third part of the paper outlines the results from the actual learning in the virtual environment of a pilot group of students. Qualitative data concerning the benefits of MOODLE within an autonomous learning context are presented. To conclude, it is suggested that prior analysis of each particular teaching situation is very important to decide whether MOODLE will in fact fulfil previous expectations.
The double helix revisited: a paradox of science and a paradigm of human behaviour
Argüelles, Juan Carlos
Asclepio : Revista de Historia de la Medicina y de la Ciencia , 2007,
Abstract: In the modern history of Science, few breakthroughs have caused an impact comparative to the Double Helix, the three-dimensional structure of DNA proposed by Watson & Crick in 1953, an event whose 50th anniversary was widely celebrated in the non-specialist media, three years ago. Although the discovery had little transcendence at the time, it has unquestionably been of great importance ever since. The Double Helix has underlined the true biological value of nucleic acids compared with proteins, demonstrating that genes are not amorphous entities but have a specific chemical composition and adopt an ordered spatial folding pattern. Elucidation of this key configuration made it possible to establish a direct relationship between the structure and the function of macromolecules, a relationship which is not so clear in the case of proteins. During these last fifty years much has been written and argued about the circumstances surrounding the discovery and about the behaviour and attitudes of many of the protagonists. Besides Watson & Crick, other scientists, whose contribution has not been adequately recognised, played an important part in solving the Double Helix mystery. This article contains some ethical and scientific reflections which revise some of these essential contributions and throws light on the role played in history by these comparatively unknown soldiers of science. The Double Helix story is undoubtedly a manifestation of the human side of science and many scientists believe that the available evidence taken as a whole permits an alternative story to be written. En la desarrollo histórico de la Ciencia moderna, pocos descubrimientos han causado un impacto comparativo a las repercusiones de la Doble Hélice, la estructura tridimensional del ADN, propuesta por Watson y Crick en 1953. El 50o aniversario de aquel evento fue ampliamente celebrado hace tres a os, incluso por los medios no especializados en información científica. Si bien, el descubrimiento tuvo inicialmente poca trascendencia, en este medio siglo transcurrido sus repercusiones resultan incuestionables. La Doble Hélice ha resaltado el verdadero valor biológico de los ácidos nucleicos frente a la proteínas, demostrando que los genes no son entidades amorfas. Por el contrario, poseen una composición química específica y adoptan un patrón ordenado de plegamiento espacial. La elucidación de esta configuración esencial permitió establecer una relación directa entre la estructura y la función de las macromoléculas biológicas, dicha interconexión no resulta tan obvia en el caso de las pro
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