Search results for "problems"
showing 10 items of 620 documents
Existence and Relaxation Results for Second Order Multivalued Systems
2021
AbstractWe consider nonlinear systems driven by a general nonhomogeneous differential operator with various types of boundary conditions and with a reaction in which we have the combined effects of a maximal monotone term $A(x)$ A ( x ) and of a multivalued perturbation $F(t,x,y)$ F ( t , x , y ) which can be convex or nonconvex valued. We consider the cases where $D(A)\neq \mathbb{R}^{N}$ D ( A ) ≠ R N and $D(A)= \mathbb{R}^{N}$ D ( A ) = R N and prove existence and relaxation theorems. Applications to differential variational inequalities and control systems are discussed.
Remote Sensing applications in archaeology
2011
In recent years Remote Sensing applications in archaeology have become increasingly frequent. This plurality of applications depends mostly on the rising interest of the scientific community in modern methods for surveying geographic data, which have become increasingly powerful, automatic and reliable. Remote Sensing, with its various techniques, offers the rapid acquisition of a huge quantity of metric and qualitative data in order to describe or to identify archaeological sites. For an appropriate and widespread use of these data, it is still necessary to have recourse to GIS techniques; as a matter of fact, only the combined use of both methodologies provides a full exploitation of thei…
Renormalized solutions for degenerate elliptic–parabolic problems with nonlinear dynamical boundary conditions and L1-data
2008
Abstract We consider a degenerate elliptic–parabolic problem with nonlinear dynamical boundary conditions. Assuming L 1 -data, we prove existence and uniqueness in the framework of renormalized solutions. Particular instances of this problem appear in various phenomena with changes of phase like multiphase Stefan problems and in the weak formulation of the mathematical model of the so-called Hele–Shaw problem. Also, the problem with non-homogeneous Neumann boundary condition is included.
Las representaciones sociales del alumnado sobre la crisis. ¿Qué soluciones ofrece el alumnado ante los problemas económicos?
2021
Este artículo presenta los resultados de una investigación sobre las representaciones sociales de adolescentes de 16 a 18 años de la actual crisis económica. Estos adolescentes pertenecen a dos grupos de bachillerato de un mismo centro educativo y provienen de contextos socioeconómicos similares, sin embargo uno de los dos cursa las asignaturas de Historia Contemporánea y Economía (Grupo A) y el otro no (Grupo B). Se recopila la información a partir de un cuestionario escrito sobre noticias actuales y de un grupo de discusión sobre el tema. Los resultados muestran la influencia de los medios de comunicación en las respuestas de ambos grupos y una mayor viabilidad de las soluciones propuesta…
El SIDA como enfermedad social: análisis de su presencia e investigación
2005
Jose.R.Bueno@uv.es Amparo.Madrigal@uv.es francisco.j.mestre@uv.es Al objeto de analizar aquellos elementos psicosociales que definen la difusión del VIH/SIDA, la Unidad de Investigación coordinada por el Profesor José R. Bueno Abad de la Facultad de Ciencias Sociales de la Universidad de Valencia ha puesto en marcha una investigación que tiene como objetivo fundamental la detección y análisis de las representaciones sociales del VIH. A continuación se exponen algunos de los aspectos básicos de la enfermedad, su curso y tratamiento, revelados en las fases iniciales de recogida de datos de nuestra investigación a partir de numerosas investigaciones realizadas hasta la actualidad, el rastreo d…
On the broken ray transform
2014
Understanding and analyzing SQL/CLI database usage of Java software: empirical study
2005
Transformando las prácticas de evaluación en las agencias de innovación para fomentar transiciones hacia la sostenibilidad
2019
The aim of the study is to identify different styles and practices for evaluation of innovation policies based on different orientations, focusing on the case of the paradigm of transformative change to foster transitions towards sustainability, and the problems associated with its application. The study is exploratory, and it uses public funding agencies for innovation as strategic research settings. Based on the information provided by the experience of an international consortium participated by funding agencies from different countries, the main concepts and problems presented in the theoretical debate are illustrated. Finally, the main contributions of the study to the theory and pract…
A new heterogeneous and reconfigurable architecture for image analysis
1993
In the paper a new architecture for image analysis: HERMIA (Heterogeneous and Reconfigurable Machine for Image Analysis) is presented. It has bt:en developed at the University of Palermo, inside the Progetto Finalizzato of the ltalian Council of Researches (CNR): Sistemi informatici e Calcolo Parallelo. The architecture of the HERMIA-machine is reconfigurable, moreover the integration of heterogeneous module, oriented to the solution of specific problems, allows to salve complex problems by search of optimal strategies. Signa! processing units allows the user to handle and integrate multi-sensors signals (from video, scanner, music recorder). Here the generai architecture, the hardware impl…
Food selectivity in autism spectrum disorders: a systematic review.
2013
Autism spectrum disorders are characterized by difficulties with reciprocal social interactions and restricted patterns of behavior and interest; one of these characteristic behaviors is food selectivity. The objective of this study was to perform a systematic review of the literature published between 1970 and 2013 concerning this eating behavior. The articles identified were analyzed in terms of sample size, study design, and criteria for assessment and intervention, as well as the results, level of evidence and grade of recommendation. The main search was conducted in Medline, Cochrane Library, Scielo, ScienceDirect, and Embase). There is empirical evidence and an overall scientific con…