Teorías psicológicas del aprendizaje y su aplicación en el diseño de metodologías para la enseñanza de la física.

El trabajo pretende proporcionar a los profesores en general y a los de la asignatura de Física en particular, una información exhaustiva sobre las teorías psicológicas del aprendizaje, y de cómo aplicarlas en el diseño de metodologías para la enseñanza de la Física. Comienza el trabajo tratando las principales teorías del aprendizaje aportadas por las escuelas psicológicas conductista y cognitiva. Estudia las aplicaciones prácticas en el aula, de las teorías del aprendizaje conductistas, revisando críticamente la metodología de la enseñanza programada con el fin de detectar sus ventajas y limitaciones respecto a la enseñanza tradicional. Presenta un ejemplo práctico de dicha metodología mediante el estudio de la unidad didáctica: electrostática. Analiza la fundamentación, el modelo didáctico, los recursos didácticos y las implicaciones de la utilización del constructivismo, como aportación de las teorías cognitivas del aprendizaje, en el proceso de la enseñanza-aprendizaje de las ciencias. Expone un ejemplo práctico de la metodología constructivista, aplicada al estudio de la misma unidad didáctica. De este modo podrá contrastarse qué metodología ofrece mejores resultados en lo que se refiere al proceso de enseñanza-aprendizaje de los alumnos y por tanto en lo que respecta a su rendimiento escolar.

La Conferencia del Consejo de Europa en Málaga : presidió la Sección de clausura el Subsecretario de Educación y Ciencia, profesor Legaz Lacambra. En la declaración final se propugna por la cooperación entre los educadores para formar a la juventud dentro de un humanismo nuevo, enraizado en la herencia europea.

Incluye las ponencias, en francés, Rapport del Grupo Primero de Verlinden, Johannes; Koweindi, Karl; Vandevelde, René. p. 1598-1602. Rapport del Grupo Segundo de Wohlgemuth, Ludwig; Gie, Hubert; Kjeldsen, Paul; Whitaker, Enid Rosamond. p. 1602-1605. Declaración final de la Conferencia (en francés). p. 1605-1606

La conciencia intercultural y la adquisición de segundas lenguas : ¿predice el dominio de segundas lenguas el desarrollo de la 'conciencia intercultural'?

Título del congreso: 'El español, lengua del mestizaje y la interculturalidad'

The sociology of religion and the 'desecularisation of society'

Neste artigo, pretendo delimitar alguns dos mais importantes e recentes avanços na análise e na teorização que a Sociologia das Religiões sofreu na Alemanha, França e no mundo anglo-saxónico, nomeadamente os conceitos de "new cultural sociology", "new paradigm", e o debate sobre a dessecularização da sociedade. O centro encontra-se na crescente importancia da subjectividade e da espiritualidade. Por forma a não se reduzirem a simples aspectos teóricos, relacionamo-los com as alterações societais das sociedades modernas. Contudo, afirmamos que esta nossa abordagem foca especialmente o fenómeno descrito na Europa Central, assim como nas sociedades anglo-saxónicas. Afastando-nos deste enfoque, desejamos que também em Portugal e no Brasil se desenvolvam estudos sobre estes procesos teóricos e as suas relações com as mudanças nas sociedades.

Conductive elastomeric composites

Conductive elastic materials are formed by distributing conductive particles within an elastic polymer. We consider a novel composite based on dendritic nickel particles that exhibit remarkably strong negative piezoresistivity with an increase in conductivity of up to 10 orders of magnitude with strains of the order of 0.2. A vital factor for the conductivity of conductive elastomers is the concentration of conductive fillers and many aspects can be understood in terms of percolation theory. In this system the concentration of particles within the composite does not change with strain, yet due to the shape of the particles, the concentration of electrical contacts between the particles does change. We have developed a new model based on the concentration of contact sites, rather than particles which enables us to successfully model this remarkable strain-dependence of conductivity.

Oxygen isotope composition of bivalve seasonal growth increments and ambient water in the rivers Rhine and Meuse

The application of oxygen isotope ratios ({delta}18O) from freshwater bivalves as a proxy for river discharge conditions in the Rhine and Meuse rivers is investigated. We compared a dataset of water temperature and water {delta}18O values with a selection of recent shell {delta}18O records for two species of the genus Unio in order to establish: (1) whether differences between the rivers in water {delta}18O values, reflecting river discharge conditions, are recorded in unionid shells; and (2) to what extent ecological parameters influence the accuracy of bivalve shell {delta}18O values as proxies of seasonal, water oxygen isotope conditions in these rivers. The results show that shells from the two rivers differ significantly in {delta}18O values, reflecting different source waters for these two rivers. The seasonal shell {delta}18O records show truncated sinusoidal patterns with narrow peaks and wide troughs, caused by temperature fractionation and winter growth cessation. Interannual growth rate reconstructions show an ontogenetic growth rate decrease. Growth lines in the shell often, but not always, coincide with winter growth cessations in the {delta}18O record, suggesting that growth cessations in the shell {delta}18O records are a better age estimator than counting internal growth lines. Seasonal predicted and measured {delta}18O values correspond well, supporting the hypothesis that these unionids precipitate their shells in oxygen isotopic equilibrium. This means that (sub-) fossil unionids can be used to reconstruct spring-summer river discharge conditions, such as Meuse low-discharge events caused by droughts and Rhine meltwater-influx events caused by melting of snow in the Alps.

Generic unified modelling process for developing semantically rich, dynamic and temporal models

Models play a vital role in supporting a range of activities in numerous domains. We rely on models to support the design, visualisation, analysis and representation of parts of the world around us, and as such significant research effort has been invested into numerous areas of modelling; including support for model semantics, dynamic states and behaviour, temporal data storage and visualisation. Whilst these efforts have increased our capabilities and allowed us to create increasingly powerful software-based models, the process of developing models, supporting tools and /or data structures remains difficult, expensive and error-prone. In this paper we define from literature the key factors in assessing a model’s quality and usefulness: semantic richness, support for dynamic states and object behaviour, temporal data storage and visualisation. We also identify a number of shortcomings in both existing modelling standards and model development processes and propose a unified generic process to guide users through the development of semantically rich, dynamic and temporal models.

Modeling building semantics: providing feedback and sustainability

Even minor changes in user activity can bring about significant energy savings within built space. Many building performance assessment methods have been developed, however these often disregard the impact of user behavior (i.e. the social, cultural and organizational aspects of the building). Building users currently have limited means of determining how sustainable they are, in context of the specific building structure and/or when compared to other users performing similar activities, it is therefore easy for users to dismiss their energy use. To support sustainability, buildings must be able to monitor energy use, identify areas of potential change in the context of user activity and provide contextually relevant information to facilitate persuasion management. If the building is able to provide users with detailed information about how specific user activity that is wasteful, this should provide considerable motivation to implement positive change. This paper proposes using a dynamic and temporal semantic model, to populate information within a model of persuasion, to manage user change. By semantically mapping a building, and linking this to persuasion management we suggest that: i) building energy use can be monitored and analyzed over time; ii) persuasive management can be facilitated to move user activity towards sustainability.

Detection and identification of species-specific bacteria associated with synanthropic mites

Internal bacterial communities of synanthropic mites Acarus siro, Dermatophagoides farinae, Lepidoglyphus destructor, and Tyrophagus putrescentiae (Acari: Astigmata) were analyzed by culturing and culture-independent approaches from specimens obtained from laboratory colonies. Homogenates of surface-sterilized mites were used for cultivation on non-selective agar and DNA extraction. Isolated bacteria were identified by sequencing of the 16S rRNA gene. PCR amplified 16S rRNA genes were analyzed by terminal restriction fragment length polymorphism analysis (T-RFLP) and cloning sequencing. Fluorescence in situ hybridization using universal bacterial probes was used for direct bacterial localization. T-RFLP analysis of 16S rRNA gene revealed distinct species-specific bacterial communities. The results were further confirmed by cloning and sequencing (284 clones). L. destructor and D. farinae showed more diverse communities then A. siro and T. putrescentiae. In the cultivated part of the community, the mean CFUs from four mite species ranged from 5.2 × 102 to 1.4 × 103 per mite. D. farinae had significantly higher CFUs than the other species. Bacteria were located in the digestive and reproductive tract, parenchymatical tissue, and in bacteriocytes. Among the clones, Bartonella-like bacteria occurring in A. siro and T. putresecentiae represented a distinct group related to Bartonellaceae and to Bartonella-like symbionts of ants. The clones of high similarity to Xenorhabdus cabanillasii were found in L. destructor and D. farinae, and one clone related to Photorhabdus temperata in A. siro. Members of Sphingobacteriales cloned from D. farinae and A. siro clustered with the sequences of “Candidatus Cardinium hertigii” and as a separate novel cluster.

Development of a semantic graph-based scene description

Software representations of scenes, i.e. the modelling of objects in space, are used in many application domains. Current modelling and scene description standards focus on visualisation dimensions, and are intrinsically limited by their dependence upon their semantic interpretation and contextual application by humans. In this paper we propose the need for an open, extensible and semantically rich modelling language, which facilitates a machine-readable semantic structure. We critically review existing standards and techniques, and highlight a need for a semantically focussed scene description language. Based on this defined need we propose a preliminary solution, based on hypergraph theory, and reflect on application domains.

Cardinium endosymbionts are widespread in synanthropic mite species(Acari: Astigmata)

‘Candidatus Cardinium’ is an intracellular endosymbiont or parasite frequently occurring in invertebrates including mites and ticks. In this work we report Cardinium bacteria in Astigmata mites and explore their incidence in synanthropic species. Amplification of a 776 bp bacterial 16S rRNA gene fragment, using specific primers, enabled identification of closely related Cardinium sequences in 13 laboratory-reared populations of mites. In addition, Cardinium sequences were identified in three wild mite populations. Large scale screening of these populations showed 100% prevalence of Cardinium, representing the highest incidence compared to other major Chelicerate groups.

Changing building user attitude and organisational policy towards sustainable resource use in healthcare

Health care provision is significantly impacted by the ability of the health providers to engineer a viable healthcare space to support care stakeholders needs. In this paper we discuss and propose use of organisational semiotics as a set of methods to link stakeholders to systems, which allows us to capture clinician activity, information transfer, and building use; which in tern allows us to define the value of specific systems in the care environment to specific stakeholders and the dependence between systems in a care space. We suggest use of a semantically enhanced building information model (BIM) to support the linking of clinician activity to the physical resource objects and space; and facilitate the capture of quantifiable data, over time, concerning resource use by key stakeholders. Finally we argue for the inclusion of appropriate stakeholder feedback and persuasive mechanism, to incentivise building user behaviour to support organisational level sustainability policy.