Browse publicly accessible academic documents published in 2005.
3227 documents
The dependence of the preexponential factor on the temperature has been examined and the errors involved in the activation energy calculated from isothermal and non-isothermal methods without considering such dependence have been estimated. It has been shown that the error in…
DOI: 10.1007/s10973-005-0948-3
A new structural model based on the premises widely used for describing the structure of aerogels has been introduced. These structures have been described as an assemblage of randomly-packed spheres in several hierarchically-ordered levels. A new algorithm has been developed…
DOI: 10.1007/s10971-005-2363-4
DOI: 10.11606/issn.2316-7114.sig.2005.90552
Entrepreneurship education quite often concentrates on business-plan and start-up courses. Higher education institutions -such as universities or colleges- do not differ significantly from this general trend. These courses do play a very important role in giving students…
Los objetivosde la presente revisión son, por un lado, dar a conocer el estado actual de la investigación realizada sobre las diferentes adaptaciones óseas derivadas de la práctica deportiva en los miembros inferiores y, por otro, determinar qué tipo de actividades o…
The objective of the present study was to investigate the effect of leptin, alone or in combination with IL-1, on nitric oxide synthase (NOS) type II activity in vitro in human primary chondrocytes, in the mouse chondrogenic ATDC5 cell line, and in mature and hypertrophic ATDC5…
DOI: 10.1186/ar1708
A partir del concepto de texto entendido como lenguaje tal como ha sido propuesto por Yuri M. Lotman, nos adentramos en el análisis de la significación tanto de los significados como de los significantes de las propuestas de espacialidad, siguiendo la descripción y análisis de…
No âmbito do desenvolvimento de um modelo para avaliação de segmentos de mercado prioritários em turismo, apresenta-se uma proposta de proxy do desempenho, numa escala cujos registos não dependem da magnitude dos objectos. O índice de dormidas per capita, testado no contexto da…
A indústria do vinho do Porto caracteriza-se pela longevidade das suas existências. Devido à natureza das práticas e dos normativos contabilísticos, estas existências de longa duração são registadas no activo corrente e medidas ao custo. Este grupo de factos, em associação com a…
A nondestructive method to determine the hydrogen content at the surface of diamondlike carbon and polymeric thin films is proposed. The method relies on the analysis of the elastic peak produced by backscattering of electrons from the hydrogen atoms present at the sample…
DOI: 10.1063/1.2011786
Companies’ competitiveness depends on, among other elements, an increasing use of information and communications technologies. However, in Europe implementation solutions of e-commerce are still at a very early stage. Based on some existent studies, this article presents a…
In this paper we study numerically existence and stability of exact dark waves on the (nonintegrable) discrete nonlinear Schrödinger equation for a finite one-dimensional lattice. These are solutions that bifurcate from stationary dark modes with constant background intensity…
DOI: 10.1103/PhysRevE.71.036627
The present paper shows the conclusions of a research carried out on a representative sample of first class hotels in the Costa del Sol (an outstanding touristic region in Spain). The Organizational Culture of this group of hotels was previously analyzed in 1993, a series of…
A Segurança Social precisa de arrecadar receitas para atribuição das prestações sociais e ao mesmo tempo possa fazer face à sustentabilidade financeira do seu sistema. Essa preocupação contribuí para que esta tenha um papel cada vez mais interventivo nos processos especiais de…
El objetivo de esta investigación ha sido analizar las orientaciones laborales en España, en distintos momentos del tiempo, y sus relaciones con algunas variables sociodemográficas, a nivel individual. La definición y operacionalización de las orientaciones laborales supone, tal…
En palabras de su autor, este artículo procura, de una manera cordial con Foucault, rellenar un vacío dejado en Las palabras y las cosas. En concreto, Ernst Behler recupera aquí la importancia que el pensador francés le diera al lenguaje en su obra como síntoma privilegiado del…
DOI: 10.24310/EstudiosNIETen.vi5.9223
Uma das principais características do atual ambiente organizacional tem sido a necessidade das empresas atuarem de forma conjunta e associada, compartilhando recursos, informação e conhecimento. Neste contexto, surge como possibilidade concreta para o desenvolvimento…
Partimos de la convicción de que la educación es el elemento fundamental para el éxito de la integración en el mundo. Para enfrentar el desafío que supone para la convivencia el contexto actual de la globalización, la interculturalidad y los flujos migratorios, proponemos una…
La cosmología moderna abarca un universo visible de 10" galaxias, pero se extiende probablemente al infinito. Cuanto más grande es el cosmos tantos más sucesos pueden ocurrir en un espacio tan vasto. Incluso también habrá muchas civilizaciones las cuales podrían llevar a cabo…
Any metric quadrangulation (made by segments of straight line) of a point set in the plane determines a 2-coloration of the set, such that edges of the quadrangulation can only join points with different colors. In this work we focus in 2-colorations and study whether they admit…
It is a fact that the competitiveness of the firms depends on its hability to create sustainable competitive advantages, being the value creation one of its fundamental pillars. This can be seen from three different perspectives: the buyer's perspective, very analyzed in…
O Decreto-lei n.º 79/2003, de 23 de Abril, aperfeiçoa o Decreto-lei n.º 44/99, de 12 de Fevereiro, ambos foram emitidos pelo Ministério das Finanças de Portugal, e determinam, por razões de gestão, a obrigatoriedade da adopção do inventário permanente a um vasto conjunto de…
In this Rapid Communication we show the relationship between surface plasmon resonance damping and the intensity of surface bonding for capped Au nanoparticles, (NPs). Up to now the influence of capping has been included as a phenomenological modification of the scattering…
DOI: 10.1103/PhysRevB.72.241403
The main goal of this work is to improve the automatic interpretation of ocean satellite images. We present a comparative study of different classifiers: Graphic Expert System (GES), ANN-based Symbolic Processing Element (SPE), Hybrid System (ANN – Radial Base Function & Fuzzy…
DOI: 10.1007/11556985
La descentralización de los Servicios Públicos de Empleo ha culmin ado su proceso en Andalucía en 2004 con las transferencias de competencias en materia de empleo y posterior puesta en marcha del Servicio Andaluz de Empleo (SAE). Para la Administración Regional supone un reto y…
En la práctica educativa, el foro para la discusión online se está convirtiendo en uno de los escenarios que está ofreciendo mayores posibilidades para el aprendizaje colaborativo a través de Internet. Actualmente, existe toda una corriente en investigación educativa que centra…
La sindicación de noticias es un hecho hoy en día en la red, debemos de facilitar las perso- nas que siguen nuestras webs las máximas facilidades para que sean capaces de conocer todas las novedades que facilitamos en la red sin tener que visitarla y rastrear cada rincón de las…
It is generally accepted that measurements of the magnetic properties are more sensitive than measurements of the enthalpy changes in the detection of the onset of crystallization of ferromagnetic phases emerging from a paramagnetic amorphous alloy. In this work, it is shown…
DOI: 10.1063/1.1849826
This paper concerns with some elliptic equations with non-linear boundary conditions. Sub-supersolution and bifurcation methods are used in order to obtain existence, uniqueness or multiplicity of positive solutions.
DOI: 10.1142/9789812701589_0009
Many approaches to anticancer treatment have had a limited success. A fundamental hurdle to cancer therapy is the robustness of the signalling networks involved in tumourgenesis. The complexity of net- works of biological signalling pathways is such that the development of…
DOI: 10.1007/11499220_28
The objective of the financial inmunization’s strategies is to avoid the risk due to possible variations on the interest rates. The financial inmunization models proposed for this aim can be classified in three gropus: single-factor models based on unique duration measures…
