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Articles 1 - 4 of 4
Full-Text Articles in Education
Transferts De Chaleur Dans Un Réacteur Thermochimique Solaire Muni D’Un Récepteur Volumique Poreux, Hernando Romero Paredes Rubio
Transferts De Chaleur Dans Un Réacteur Thermochimique Solaire Muni D’Un Récepteur Volumique Poreux, Hernando Romero Paredes Rubio
Hernando Romero Paredes Rubio
Un réacteur thermochimique solaire de 1 kW muni d’une structure céramique poreuse en céramique est modélisé pour simuler les transferts thermiques a l’intérieur du récepteur volumétrique. Le modèle développé a été utilisé pour prévoir le comportement thermique du réacteur en fonction des différentes conditions opératoires qui concernent le débit de gaz inerte, le flux solaire incident, la porosité, la longueur du récepteur, et la prise en compte de réactions chimiques. Les résultats montrent que la température maximale est de 1850K pour une concentration solaire de 1000 soleils. La température diminue de manière significative lorsque le débit de gaz augmente. Un …
O Debate Ciências Versus Humanidades No Século Xix: Reflexões Sobre O Ensino De Ciências No Collegio De Pedro Ii [The Science Vs. Humanities Debate In The Xix Century: Reflections On The Teaching Of The Sciences In The College Pedro Ii], Karl M. Lorenz, Ariclê Vechia
O Debate Ciências Versus Humanidades No Século Xix: Reflexões Sobre O Ensino De Ciências No Collegio De Pedro Ii [The Science Vs. Humanities Debate In The Xix Century: Reflections On The Teaching Of The Sciences In The College Pedro Ii], Karl M. Lorenz, Ariclê Vechia
Karl M Lorenz
O trabalho analisa a organização e a composição dos estudos do Colégio Pedro II no âmbito dos debates travado na Europa e nas Américas sobre a importância dos estudos humanísticos e científicos, durante o século XIX, em decorrência do desenvolvimento cientifico e tecnológico. Apresenta algumas reflexões sobre o ensino de Ciências no referido colégio e aponta que essa instituição seguiu a tendência verificada no ensino de países europeus, notadamente na França.
The chapter analyzes the changes in the organization and composition of the program of studies of the College Pedro II during the XIX century. The discussion of the changes …
Approximate Solution Of Fractional Integro-Differential Equations By Taylor Expansion Method, Li Huang
Approximate Solution Of Fractional Integro-Differential Equations By Taylor Expansion Method, Li Huang
Li Huang
In this paper, Taylor expansion approach is presented for solving (approximately) a class of inear fractional integro-differential equations including those of Fredholm and of Volterra types. By means of themth-order Taylor expansion of the unknown function at an arbitrary point, the linear fractional integro-differential equation can be converted approximately to a system of equations for the unknown function itself and its m derivatives under initial conditions. This method gives a simple and closed form solution for a linear fractional integro-differential equation. In addition, illustrative examples are presented to demonstrate the efficiency and accuracy of the proposed method.
Cognitive Effects Of Argument Visualization Tools, Michael H.G. Hoffmann
Cognitive Effects Of Argument Visualization Tools, Michael H.G. Hoffmann
Michael H.G. Hoffmann
External representations play a crucial role in learning. At the same time, cognitive load theory suggests that the possibility of learning depends on limited resources of the working memory and on cognitive load imposed by instructional design and representation tools. Both these observations motivate a critical look at Computer-Supported Argument Visualization (CSAV) tools that are supposed to facilitate learning. This paper uses cognitive load theory to compare the cognitive efficacy of RationaleTM 2 and AGORA.