Visualitzador de mol��cules d'ADN per laboratori virtual

RESUM Com a continuaci�� del treball de final de carrera ���Desenvolupament d���un laboratori virtual per a les pr��ctiques de Biologia Molecular��� de Jordi Romero, s���ha realitzat una eina complementaria per a la visualitzaci�� de mol��cules integrada en el propi laboratori virtual. Es tracta d���una eina per a la visualitzaci�� gr��fica de gens, ORF, marques i seq����ncies de restricci�� de mol��cules reals o fict��cies. El fet de poder treballar amb mol��cules fict��cies ��s la gran avantatge respecte a les solucions com GENBANK que nom��s permet treballar amb mol��cules pr��pies. Treballar amb mol��cules fict��cies fa que sigui una soluci�� ideal per a l���ensenyament, ja que d��na la possibilitat als professors de realitzar exercicis o demostracions amb mol��cules reals o dissenyades expressament per a l���exercici a demostrar. A m��s, permet mostrar de forma visual les diferents parts simult��niament o per separat, de manera que ofereix una primera aproximaci�� interpretaci�� dels resultats. Per altra banda, permet marcar gens, crear marques, localitzar seq����ncies de restricci�� i generar els ORF de la mol��cula que nosaltres creem o modificar una ja existent. Per l���implementaci��, s���ha continuat amb l���idea de separar la part de codi i la part de disseny en les aplicacions Flash. Per fer-ho, s���ha utilitzat la plataforma de codi lliure Ariware ARPv2.02 que proposa un marc de desenvolupament d���aplicacions Flash orientades a objectes amb el codi (classes ActionScript 2.0) separats del movieclip. Per al processament de dades s���ha fet servir Perl per ser altament utilitzat en Bioinform��tica i per velocitat de c��lcul. Les dades generades es guarden en una Base de Dades en MYSQL (de lliure distribuci��), de la que s���extreuen les dades per generar fitxers XML, fent servir tant PHP com la plataforma AMFPHP com a enlla�� entre Flash i la resta de parts.

Consideraciones educativas de la perspectiva ecol��gica de Urie Bronferbrenner

El objetivo de este art��culo es presentar las bases te��ricas y algunas aplicaciones contempor��neas de la teor��a de Urie Bronfenbrenner. En primer lugar, se describe su biograf��a. Posteriormente, se explica su teor��a ecolog��a, su modelo ���Proceso-Persona-Contexto-Tiempo��� (PPCT) y su reciente aproximaci��n bioecol��gica. A continuaci��n, exponemos algunas consideraciones educativas de su teor��a. M��s espec��ficamente, destacamos seis temas basados en algunas ideas de Bronfenbrenner: 1) la relaci��n entre pol��tica social y ciencia, 2) la creaci��n de contextos de desarrollo primarios y secundarios, 3) la implicaci��n afectiva, 4) el curr��culo centrado en el cuidado o la atenci��n de las personas, 5) la intervenci��n comunitaria, y 6) el establecimiento de continuidades entre microsistemas (noci��n de ���mesosistema���). Finalmente, revisamos algunas aportaciones contempor��neas en psicolog��a y ciencias de la educaci��n basadas en la perspectiva de Bronfenbrenner

Avaluaci�� de revistes i avaluaci�� de la recerca en humanitats i ci��ncies socials a Catalunya: aproximaci�� a un problema

The evaluation of the quality and impact of journals as a starting point to systematise the quality of research is an indirect method commonly used for obtaining information for systematic and major evaluation efforts, such as those needed for public tenders to aid projects and research groups. Nevertheless, this method runs into an important obstacle: preparing rankings of journals in the humanities and social sciences is considerably more complex than for those on experimental, biomedical or technological sciences. Cultural, linguistic and territorial components of research in the humanities and social sciences radically question the international rankings. Within this context, the article presents the experience of a study-in-progress whose intention is to evaluate the rankings of journals in the humanities and social sciences published in 1997 by the Generalitat de Catalunya. Even thought an attempt was made to bring this type of titles closer to the Catalan community of researchers, the initiative has been frequently surrounded by controversy and criticism and, at the present, does not enjoy the needed recognition of the Catalan academic sector.

Modifications in the Si valence band after ion-beam-induced oxidation

The changes undergone by the Si surface after oxygen bombardment have special interest for acquiring a good understanding of the Si+-ion emission during secondary ion mass spectrometry (SIMS) analysis. For this reason a detailed investigation on the stoichiometry of the builtup surface oxides has been carried out using in situ x-ray photoemission spectroscopy (XPS). The XPS analysis of the Si 2p core level indicates a strong presence of suboxide chemical states when bombarding at angles of incidence larger than 30��. In this work a special emphasis on the analysis and interpretation of the valence band region was made. Since the surface stoichiometry or degree of oxidation varies with the angle of incidence, the respective valence band structures also differ. A comparison with experimentally measured and theoretically derived Si valence band and SiO2 valence band suggests that the new valence bands are formed by a combination of these two. This arises from the fact that Si��Si bonds are present on the Si��suboxide molecules, and therefore the corresponding 3p-3p Si-like subband, which extends towards the Si Fermi level, forms the top of the respective new valence bands. Small variations in intensity and energy position for this subband have drastic implications on the intensity of the Si+-ion emission during sputtering in SIMS measurements. A model combining chemically enhanced emission and resonant tunneling effects is suggested for the variations observed in ion emission during O+2 bombardment for Si targets.

Percentage of nonoverlapping corrected data

The present study proposes a modification in one of the most frequently applied effect size procedures in single-case data analysis the percent of nonoverlapping data. In contrast to other techniques, the calculus and interpretation of this procedure is straightforward and it can be easily complemented by visual inspection of the graphed data. Although the percent of nonoverlapping data has been found to perform reasonably well in N = 1 data, the magnitude of effect estimates it yields can be distorted by trend and autocorrelation. Therefore, the data correction procedure focuses on removing the baseline trend from data prior to estimating the change produced in the behavior due to intervention. A simulation study is carried out in order to compare the original and the modified procedures in several experimental conditions. The results suggest that the new proposal is unaffected by trend and autocorrelation and can be used in case of unstable baselines and sequentially related measurements.

Asentamientos rurales y estructuraci��n de la Layetania interior (Barcelona): romanizaci��n e impacto de los programas de organizaci��n territorial

This paper presents the results of the first phase of archaeological and historical study developed in the Vall��s Oriental. It has done a complete study of the archaeological information available from the several documentary sources (bibliography, IPAC, etc.). This has lead to an interpretative update on the forms of occupation and settlement dynamics developed in the study area during the 5th BC to 1st century AD. Preliminary results of the archaeomorphological analysis focused primarily on the road network are also presented. The first results highlight the importance of territorial organization programs of the late 2nd BC and 1st century BC. In this sense, it has been documented a close relationship between the road network and the distribution of rural settlements in late-Republican and Augustan periods. The use of databases in the management of archaeological information, and especially the application of GIS in the analysis and interpretation of data, suggest new interpretive approaches.

Approaches to the study of individual���landscape interaction as an evocation of intrapersonal communication Aproximaciones al estudio de la interacci��n individuo-paisaje a modo de evocaci��n comunicativa intrapersonal

Analysis of the interaction between landscape and the individual opens up many research avenues linked to the generation and interpretation of symbolisms and imaginaries. The capacity of landscape for significant and/or communicative evocation finds in intrapersonal communication a relevant argument for the construction of a theoretical framework to study the process of appropriation and experience of the landscape in terms of communicative expression. The principal aim of this paper is to set up the theoretical framework that enables us to interpret the language of landscape and to decode its intangible discourse.

La Incidencia de las nuevas tecnolog��as en los h��bitos formativos de los estudiantes de magisterio = The Impact of new technologies in the learning habits of teacher students

Este trabajo persigue dos objetivos: el primero es analizar el uso de las TIC en un grupo de estudiantes de segundo curso de Magisterio de la Universidad de Girona; el segundo es analizar los documentos normativos legales que establecen el curr��culum de educaci��n primaria en Catalu��a para observar qu�� tipo de papel juegan las TIC en las nuevas programaciones educativas. La primera parte se ha llevado a cabo mediante una encuesta, cuyos resultados permiten observar tres aspectos distintos: el primero, que una parte considerable del grupo considera las TIC m��s como un complemento para el aprendizaje que como una forma de aprendizaje; el segundo, que a pesar de hacer un uso considerable de las TIC, el conocimiento que tienen de ellas es muy b��sico y utilizan aplicaciones muy gen��ricas; y el tercero es que una parte de sus propuestas did��cticas para el uso de las TIC son propuestas tradicionales simplemente adaptadas a un nuevo instrumento, sin buscar realmente la innovaci��n que puede suponer la incorporaci��n de las TIC. En la segunda parte del art��culo, a partir del an��lisis e interpretaci��n de los documentos legales que establecen el curr��culum de Educaci��n Primaria, se observa que en un mismo documento conviven aserciones sobre las TIC como complemento al aprendizaje de contenidos con otras formulaciones que consideran las TIC como constructoras de conocimiento. A partir del perfil de los estudiantes y del estado de los documentos legales, al final del art��culo se hacen propuestas para formar al futuro maestro teniendo en cuenta las TIC como herramientas b��sicas de conocimiento

Aproximaciones al estudio de la interacci��n individuo-paisaje a modo de evocacion comunicativa intrapersonal (2a. parte)

El an��lisis de la interacci��n individuo-paisaje presenta numerosas perspectivas de estudio vinculadas a la generaci��n e interpretaci��n de simbolismos e imaginarios. La capacidad significante y/o de evocaci��n comunicativa del paisaje encuentra, en la comunicaci��n intrapersonal, una argumentaci��n relevante en el proceso de construcci��n de un aparato te��rico que permita estudiar el proceso de apropiaci��n y vivencia del paisaje en t��rminos de manifestaci��n comunicativa. El despliegue de un aparato te��rico que permita interpretar el mensaje del paisaje as�� como descodificar su discurso intangible, representa el objetivo principal de la investigaci��n que se presenta a continuaci��n.

Aproximaciones al estudio de la interacci��n individuo-paisaje a modo de evocaci��n comunicativa intrapersonal (1a. parte)

The analysis of the individual-landscape interaction presents different perspectives of study related to the generation and interpretation of symbolisms and imaginary. The significant capability and/or of communicative evocation of the landscape finds, in the intrapersonal communication, a relevant argumentation in the process of construction of a theoretical device. This question allows to study the process of appropriation and experience of the landscape in terms of communicative action. The development of a theoretical device that allows to interpret the message of the landscape as well as to decode its intangible speech, represents the main aim of the research that appears next.

Visualitzador de mol��cules d'ADN per laboratori virtual

Com a continuaci�� del treball de final de carrera ���Desenvolupament d���un laboratori virtual per a les pr��ctiques de Biologia Molecular��� de Jordi Romero, s���ha realitzat una eina complementaria per a la visualitzaci�� de mol��cules integrada en el propi laboratori virtual. Es tracta d���una eina per a la visualitzaci�� gr��fica de gens, ORF, marques i seq����ncies de restricci�� de mol��cules reals o fict��cies. El fet de poder treballar amb mol��cules fict��cies ��s la gran avantatge respecte a les solucions com GENBANK que nom��s permet treballar amb mol��cules pr��pies. Treballar amb mol��cules fict��cies fa que sigui una soluci�� ideal per a l���ensenyament, ja que d��na la possibilitat als professors de realitzar exercicis o demostracions amb mol��cules reals o dissenyades expressament per a l���exercici a demostrar. A m��s, permet mostrar de forma visual les diferents parts simult��niament o per separat, de manera que ofereix una primera aproximaci�� interpretaci�� dels resultats. Per altra banda, permet marcar gens, crear marques, localitzar seq����ncies de restricci�� i generar els ORF de la mol��cula que nosaltres creem o modificar una ja existent. Per l���implementaci��, s���ha continuat amb l���idea de separar la part de codi i la part de disseny en les aplicacions Flash. Per fer-ho, s���ha utilitzat la plataforma de codi lliure Ariware ARPv2.02 que proposa un marc de desenvolupament d���aplicacions Flash orientades a objectes amb el codi (classes ActionScript 2.0) separats del movieclip. Per al processament de dades s���ha fet servir Perl per ser altament utilitzat en Bioinform��tica i per velocitat de c��lcul. Les dades generades es guarden en una Base de Dades en MYSQL (de lliure distribuci��), de la que s���extreuen les dades per generar fitxers XML, fent servir tant PHP com la plataforma AMFPHP com a enlla�� entre Flash i la resta de parts.