Conceptualizing professional development in mathematics : elements of a model. 'Conceptualización del desarrollo profesional en matemáticas : elementos de un modelo'.

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A review of research trends in mathematics teacher education. 'Una revisión de las tendencias de investigación en la formación de profesores de matemáticas'.

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Mathematics, computers in Mathematics, and gender : public perceptions in context. 'Matemáticas, ordenadores en Matemáticas y género : percepciones públicas en contexto'.

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Domain specific and general epistemological beliefs their effects on mathematics

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Designing professional learning tasks for mathematics learning trajectories

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The experience of security in mathematics

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Digital technology in mathematics education : why it works (or doesn't)

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Mathematics teachers' ideas about mathematical models : a diverse landscape

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Quality of learning support for mathematics in transition to University

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Mathematics meaning-making and its relation to design of teaching

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Factors involved in making post-performance judgments in mathematics problem-solving

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Characterization about tutor??s actuation in the teachers training of mathematics

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Contribution of the research component in internship reports to the development of didactic knowledge of mathematics

Monogr??fico con el t??tulo: " Formaci??n de profesores. Perspectivas de Brasil, Colombia, Espa??a y Portugal"

Relaxation and derelaxation of pure and hydrogenated amorphous silicon during thermal annealing experiments

The structural relaxation of pure amorphous silicon (a-Si) and hydrogenated amorphous silicon (a-Si:H) materials, that occurs during thermal annealing experiments, has been analyzed by Raman spectroscopy and differential scanning calorimetry. Unlike a-Si, the heat evolved from a-Si:H cannot be explained by relaxation of the Si-Si network strain but it reveals a derelaxation of the bond angle strain. Since the state of relaxation after annealing is very similar for pure and hydrogenated materials, our results give strong experimental support to the predicted configurational gap between a-Si and crystalline silicon

Initial convergence of the perturbation series expansion for vibrational nonlinear optical properties

Initial convergence of the perturbation series expansion for vibrational nonlinear optical (NLO) properties was analyzed. The zero-point vibrational average (ZPVA) was obtained through first-order in mechanical plus electrical anharmonicity. Results indicated that higher-order terms in electrical and mechanical anharmonicity can make substantial contributions to the pure vibrational polarizibility of typical NLO molecules