197,609 research outputs found
Teachers researching with university academics
No full textThis Working Session (WS) was the culmination of a process that started in 2007, as a follow-up to a Research Forum at PME 30. At PME 31, a framework was developed for analysing ways in which university academics and teachers might conduct research together. Several participants from this session decided to prepare and start projects that formed the basis of the WS at PME 32, where examples of research collaborations between teachers and university academics were presented and discussed with feedback being given to the researchers in the style of a reflecting team (the focus being on the articulation by the presenter in response to probing questioning from the participants). For PME 33, we used the two WSs to work on reviewing 8 draft papers that are being developed from proposals to submit to the Journal of Mathematics Teacher Education, for consideration for a Special Issue on Teacher Change (First Guest Editor, Laurinda Brown). References Goos, M. (2008). Critique and transformation in researcher-teacher relationships in mathematics education. Symposium on the Occasion of the 100th Anniversary of ICMI. http://www.unige.ch/math/EnsMath/Rome2008/partWG3.html (09/02/2008) Novotná, J., Zack, V., Rosen, G., Lebethe, A., Brown, L. & Breen, Ch. (2006). RF01: Teachers researching with university academics. In: Novotná, J. Moraová, H., Krátká, M. & Stehlíková, N. (Eds.). Proceedings PME 30. Praha: PME. Vol. 1, pp. 95-124. Novotná, J. & Goos, M. (2007). Teachers researching with university academics. In: Woo, J-H., Lew, H.-C., Park, K.-S. & Seo, D.-Y. (Eds.) Proceedings of PME 31, Vol. 1, p. 188. Seoul: PME. Novotná, J., Brown, L. & Goos, M. (2008). Teachers researching with university academics. In: Figueras, O. et al. (Eds.) Proceedings of PME 32, Vol. 1, p. 201. Morelia: PME.This Working Session (WS) was the culmination of a process that started in 2007, as a follow-up to a Research Forum at PME 30. At PME 31, a framework was developed for analysing ways in which university academics and teachers might conduct research together. Several participants from this session decided to prepare and start projects that formed the basis of the WS at PME 32, where examples of research collaborations between teachers and university academics were presented and discussed with feedback being given to the researchers in the style of a reflecting team (the focus being on the articulation by the presenter in response to probing questioning from the participants). For PME 33, we used the two WSs to work on reviewing 8 draft papers that are being developed from proposals to submit to the Journal of Mathematics Teacher Education, for consideration for a Special Issue on Teacher Change (First Guest Editor, Laurinda Brown). References Goos, M. (2008). Critique and transformation in researcher-teacher relationships in mathematics education. Symposium on the Occasion of the 100th Anniversary of ICMI. http://www.unige.ch/math/EnsMath/Rome2008/partWG3.html (09/02/2008) Novotná, J., Zack, V., Rosen, G., Lebethe, A., Brown, L. & Breen, Ch. (2006). RF01: Teachers researching with university academics. In: Novotná, J. Moraová, H., Krátká, M. & Stehlíková, N. (Eds.). Proceedings PME 30. Praha: PME. Vol. 1, pp. 95-124. Novotná, J. & Goos, M. (2007). Teachers researching with university academics. In: Woo, J-H., Lew, H.-C., Park, K.-S. & Seo, D.-Y. (Eds.) Proceedings of PME 31, Vol. 1, p. 188. Seoul: PME. Novotná, J., Brown, L. & Goos, M. (2008). Teachers researching with university academics. In: Figueras, O. et al. (Eds.) Proceedings of PME 32, Vol. 1, p. 201. Morelia: PME
A sociocultural framework for understanding technology integration in secondary school mathematics
No full textThis paper proposes a theoretical framework for analyzing relationships between factors influencing teachers’ use of digital technologies in secondary mathematics classrooms. The framework adapts Valsiner’s zone theory of child development to study teacher learning in terms of the interaction between teacher knowledge and beliefs, professional contexts and professional learning experiences. Use of the framework is illustrated by case studies of an early career teacher and an experienced teacher
"I don't know if I'm doing it right or I'm doing it wrong!" Unresolved uncertainty in the collaborative learning of mathematics
No full textGoos-Hänchen shift in a two-dimensional atomic crystal
No full textIt is widely known that the Goos-Hänchen shift in three dimensional materials is proportional to the wavelength of the incident light. In freestanding two-dimensional crystals instead, it is proportional to their surface susceptibility
Optimal designs for rating-based conjoint experiments.
No full textThe scope of conjoint experiments on which we focus embraces those experiments in which each of the respondents receives a different set of profiles to rate. Carefully designing these experiments involves determining how many and which profiles each respondent has to rate and how many respondents are needed. To that end, the set of profiles offered to a respondent is viewed as a separate block in the design and a respondent effect is incorporated in the model, representing the fact that profile ratings from the same respondent are correlated. Optimal conjoint designs are then obtained by means of an adapted version of the algorithm of Goos and Vandebroek (2004). For various instances, we compute the optimal conjoint designs and provide some practical recommendations.Conjoint analysis; D-Optimality; Design; Model; Optimal; Optimal block design; Rating-based conjoint experiments; Recommendations;
A study on Meligethes (Nitidulidae) species in Keszthely, 2002
No full textIn 2002 we examined when the Meligethes adults emerged from the wintering places and settled in the rape field. We wanted to know how many species within the genus Meligethes, when and in what proportion and rate appeared in oilseed rape as a feed plant. In our investigations we found the following species: Meligethes aeneus (Fabricius, 1775), M. coracinus (Sturm, 1845), M. viridescens (Fabricius, 1787), M. picipes (Sturm, 1845), M. nigrescens (Stephens, 1830), M. maurus (Sturm, 1845), M. atratus (Olivier, 1890), M. denticulatus (Heer, 1841), M. erythropus (Marsham, 1802)
A hard-sphere model on generalized Bethe lattices: dynamics
No full textWe analyse the dynamics of a hard-sphere lattice gas on generalized Bethe lattices using a projective approximation scheme ( PAS). The latter consists in mapping the system's dynamics to a finite set of global observables; closure of the resulting equations is obtained by approximating the true non-equilibrium state by a pseudo-equilibrium based only on the value of the observables under consideration. We study the liquid - crystal as well as the liquid - spin-glass transitions; special attention is given to the prediction of equilibration times and their divergence close to the phase transitions. Analytical results are corroborated by Monte Carlo simulations
Goos-Hänchen shift of Cosine-Gaussian Schell-model beams with rectangular symmetry
No full textIn this contribution we study the relation between the second order intensity moments and the Goos-Hanchen shift for partially coherent totally polarized beams. The results are applied to a type of partially coherent beams, the Cosine-Gaussian Schell-model beams with rectangular symmetry.Ministerio de Economía, Comercio y Empresa (España)Depto. de ÓpticaFac. de Ciencias FísicasTRUEpu
A hard-sphere model on generalized Bethe lattices: statics
No full textWe analyse the phase diagram of a model of hard spheres of chemical radius one, which is defined over a generalized Bethe lattice containing short loops. We find a liquid, two different crystalline, a glassy and an unusual crystalline glassy phase. Special attention is also paid to the close-packing limit in the glassy phase. All analytical results are cross-checked by numerical Monte Carlo simulations
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