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Author: Pascal Jaisson
Publisher: Omniscriptum
ISBN: 9786131501883
Category :
Languages : fr
Pages : 176
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Book Description
Cette thèse concerne la modélisation par des EDP et la résolution numérique de problèmes d'optimisation pour les flux d'information et pour le trafic routier. Nous proposons un nouveau type de schémas hybrides. En premier, nous nous intéressons à l'optimisation des temps de service nécessaires à un serveur informatique pour traiter plusieurs types de requètes. Nous utilisons un système de lois de conservation proposé par De Vuyst. Ensuite, nous considérons un problème d'assimilation de données en trafic routier faisant intervenir le modèle de Aw-Rascle. A partir de données observées sur un intervalle de temps [0;T], nous voulons prévoir les conditions de circulation après le temps T. Nous utilisons alors les données pour calculer précisément les conditions au temps T pour les utiliser dans le système de Aw-Rascle comme nouvelles conditions initiales. Enfin, nous présentons un nouveau schéma numérique permettant de trouver les solutions physiques des systèmes de lois de conservation. Il s'agit d'un schéma hybride à un paramètre qui permet d'obtenir la propriété TVD, d'ètre du second ordre en espace et en temps et d'éviter la production d'entropie numérique.
Author: Pascal Jaisson
Publisher: Omniscriptum
ISBN: 9786131501883
Category :
Languages : fr
Pages : 176
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Book Description
Cette thèse concerne la modélisation par des EDP et la résolution numérique de problèmes d'optimisation pour les flux d'information et pour le trafic routier. Nous proposons un nouveau type de schémas hybrides. En premier, nous nous intéressons à l'optimisation des temps de service nécessaires à un serveur informatique pour traiter plusieurs types de requètes. Nous utilisons un système de lois de conservation proposé par De Vuyst. Ensuite, nous considérons un problème d'assimilation de données en trafic routier faisant intervenir le modèle de Aw-Rascle. A partir de données observées sur un intervalle de temps [0;T], nous voulons prévoir les conditions de circulation après le temps T. Nous utilisons alors les données pour calculer précisément les conditions au temps T pour les utiliser dans le système de Aw-Rascle comme nouvelles conditions initiales. Enfin, nous présentons un nouveau schéma numérique permettant de trouver les solutions physiques des systèmes de lois de conservation. Il s'agit d'un schéma hybride à un paramètre qui permet d'obtenir la propriété TVD, d'ètre du second ordre en espace et en temps et d'éviter la production d'entropie numérique.
Author:
Publisher:
ISBN:
Category : Cybernetics
Languages : en
Pages : 402
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Book Description
Author: Mark Mason
Publisher: John Wiley & Sons
ISBN: 1444307363
Category : Education
Languages : en
Pages : 256
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Book Description
A collection of scholarly essays, Complexity Theory and thePhilosophy of Education provides an accessible theoreticalintroduction to the topic of complexity theory while consideringits broader implications for educational change. Explains the contributions of complexity theory to philosophyof education, curriculum, and educational research Brings together new research by an international team ofcontributors Debates issues ranging from the culture of curriculum, to theimplications of work of key philosophers such as Foucault and JohnDewey for educational change Demonstrates how social scientists and social and educationpolicy makers are drawing on complexity theory to answer questionssuch as: why is it that education decision-makers are so resistantto change; how does change in education happen; and what does ittake to make these changes sustainable? Considers changes in use of complexity theory; developedprincipally in the fields of physics, biology, chemistry, andeconomics, and now being applied more broadly to the socialsciences and to the study of education
Author: Carlo Cercignani
Publisher: OUP Oxford
ISBN: 0191606987
Category : Science
Languages : en
Pages : 348
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Book Description
This book presents the life and personality, the scientific and philosophical work of Ludwig Boltzmann, one of the great scientists who marked the passage from 19th- to 20th-Century physics. His rich and tragic life, ending by suicide at the age of 62, is described in detail. A substantial part of the book is devoted to discussing his scientific and philosophical ideas and placing them in the context of the second half of the 19th century. The fact that Boltzmann was the man who did most to establish that there is a microscopic, atomic structure underlying macroscopic bodies is documented, as is Boltzmann's influence on modern physics, especially through the work of Planck on light quanta and of Einstein on Brownian motion. Boltzmann was the centre of a scientific upheaval, and he has been proved right on many crucial issues. He anticipated Kuhn's theory of scientific revolutions and proposed a theory of knowledge based on Darwin. His basic results, when properly understood, can also be stated as mathematical theorems. Some of these have been proved: others are still at the level of likely but unproven conjectures. The main text of this biography is written almost entirely without equations. Mathematical appendices deepen knowledge of some technical aspects of the subject.
Author: Christopher Hobson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Little over 200 years ago, a quarter of a century of warfare with an 'outlaw state' brought the great powers of Europe to their knees. That state was the revolutionary democracy of France. Since then, there has been a remarkable transformation in the way democracy is understood and valued - today, it is the non-democractic states that are seen as rogue regimes. Now, Christopher Hobson explores democracy's remarkable rise from obscurity to centre stage in contemporary international relations.
Author: Howard R. Eddy
Publisher:
ISBN:
Category : Bank deposits
Languages : fr
Pages : 196
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Book Description
Author: Colleen M. Flood
Publisher: University of Ottawa Press
ISBN: 077663643X
Category : Social Science
Languages : en
Pages : 850
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Book Description
The novel coronavirus SARS-CoV-2, which causes the disease known as COVID-19, has infected people in 212 countries so far and on every continent except Antarctica. Vast changes to our home lives, social interactions, government functioning and relations between countries have swept the world in a few months and are difficult to hold in one’s mind at one time. That is why a collaborative effort such as this edited, multidisciplinary collection is needed. This book confronts the vulnerabilities and interconnectedness made visible by the pandemic and its consequences, along with the legal, ethical and policy responses. These include vulnerabilities for people who have been harmed or will be harmed by the virus directly and those harmed by measures taken to slow its relentless march; vulnerabilities exposed in our institutions, governance and legal structures; and vulnerabilities in other countries and at the global level where persistent injustices harm us all. Hopefully, COVID-19 will forces us to deeply reflect on how we govern and our policy priorities; to focus preparedness, precaution, and recovery to include all, not just some. Published in English with some chapters in French.
Author: Claude Cohen-Tannoudji
Publisher: John Wiley & Sons
ISBN: 3527345558
Category : Science
Languages : en
Pages : 790
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Book Description
This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Author:
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ISBN:
Category : Africa
Languages : en
Pages : 504
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Book Description
Includes Proceedings of the Executive council and List of members, also section "Review of books".
Author:
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 756
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Book Description
