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Your search keyword '"de Carvalho, C. A. A."' showing total 31 results
Start Over Author "de Carvalho, C. A. A." Publication Type Conference Materials
31 results on '"de Carvalho, C. A. A."'

5. APLICAÇÃO DE UM MODELO NUMÉRICO PURAMENTE TÉRMICO PARA PREDIÇÃO DE CAMPOS DE TEMPERATURA EM UMA JUNTA DE AÇO INOXIDÁVEL DUPLEX UNS S32205 SOLDADA POR ATRITO COM PINO NÃO-CONSUMÍVEL

Author

Sousa, Guilherme Gadelha de, additional, Fernandes, Petrônio Luiz Cabral de Carvalho C, additional, Marques, Igor Jordão, additional, Araújo, Helen Rodrigues, additional, Vicente, André de Albuquerque, additional, and Santos, Tiago Felipe de Abreu, additional

Published
2022
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16. O Uso de Jogos como Suporte da Aprendizagem Baseada em Problemas.

Author

Andrade, A., Gouveia, D., Nogueira, F., Russo, P., and de Carvalho, C. Vaz

Abstract

Copyright of CISTI (Iberian Conference on Information Systems & Technologies / Conferência Ibérica de Sistemas e Tecnologias de Informação) Proceedings is the property of Conferencia Iberica de Sistemas Tecnologia de Informacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2015

17. Fast metastable hydrogen atoms from H2 molecules: twin atoms.

Author

Trimèche, A., Houdoux, D., Rahmat, G., Dulieu, O., Schneider, I. F., Medina, A., Jalbert, G., Zappa, F., de Carvalho, C. R., Nascimento, R. F., de Castro Faria, N. V., and Robert, J.

Subjects
HYDROGEN ions, METASTABLE ions, DISSOCIATION (Chemistry), ELECTRON beam research, TIME-of-flight mass spectrometry
Abstract

It is a difficult task to obtain "twin atoms", i.e. pairs of massive particles such that one can perform experiments in the same fashion that is routinely done with "twin photons". One possible route to obtain such pairs is by dissociating homonuclear diatomic molecules. We address this possibility by investigating the production of metastable H(2s) atoms coming from the dissociation of cold H2 molecules produced in a Campargue nozzle beam crossing an electron beam from a high intensity pulsed electron gun. Dissociation by electron impact was chosen to avoid limitations of target molecular excited states due to selection rules. Detectors placed several centimeters away from the collision center, and aligned with respect to possible common molecular dissociation channel, analyze the neutral fragments as a function of their time-of-flight (TOF) through Lyman-α detection. Evidence for the first time observed coincidence of pairs of H(2s) atoms obtained this way is presented [ABSTRACT FROM AUTHOR]

Published
2015
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23. PRAGMATIC CHARACTERIZATION OF LEARNING OBJECTS.

Author

Azevedo, I., de Carvalho, C. Vaz, and Carrapatoso, E.

Subjects
UNIFORM resource characteristics, INSTITUTIONAL repositories, ARCHIVES & education, GENERICALNESS (Linguistics), PROBLEM-based learning
Abstract

It is necessary to study how to improve the reuse of learning objects stored in repositories, otherwise they will serve merely as archives, neither assisting learner interested in some subjects nor educators developing courses. In this paper we deal with a number of questions related to a project committed to develop and evaluate a model for repositories that can make feasible the reuse of learning objects, beneficiating learners, educators and stakeholders. We argue that the pragmatic characterization of learning objects is a valid approach to reach this goal. [ABSTRACT FROM AUTHOR]

Published
2007

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