Contribution à l'étude de l'efficacité des écrans acoustiques dans les locaux

Contribution à l'étude de l'efficacité des écrans acoustiques dans les locaux PDF Author: Jean-Luc Lecocq
Publisher:
ISBN:
Category :
Languages : fr
Pages : 164

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Book Description
RAPPEL THEORIQUE SUR LES PHENOMENES DE DIFFRACTION ACOUSTIQUE. EXPRESSIONS MATHEMATIQUES POUR LE CALCUL DE L'ATTENUATION APPORTEE PAR UN ECRAN MINCE DEMI-INFINI. APPLICATION A DES CONDITIONS PLUS PROCHES DE LA REALITE (PROPAGATION EN CHAMP LIBRE), INFLUENCE DE L'ENVIRONNEMENT SUR L'EFFET D'ECRAN. DESCRIPTION DES EXPERIENCES REALISEES: DISPOSITIFS, PROGRAMMES DE CALCUL. PROPOSITION D'UNE METHODE PLUS GENERALE FAISANT APPEL AU RAISONNEMENT INTRODUIT PAR KELLER ET A LA NOTION DE RAYONS ACOUSTIQUES

Contribution à l'étude de l'efficacité des écrans acoustiques dans les locaux

Contribution à l'étude de l'efficacité des écrans acoustiques dans les locaux PDF Author: Jean-Luc Lecocq
Publisher:
ISBN:
Category :
Languages : fr
Pages : 164

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Book Description
RAPPEL THEORIQUE SUR LES PHENOMENES DE DIFFRACTION ACOUSTIQUE. EXPRESSIONS MATHEMATIQUES POUR LE CALCUL DE L'ATTENUATION APPORTEE PAR UN ECRAN MINCE DEMI-INFINI. APPLICATION A DES CONDITIONS PLUS PROCHES DE LA REALITE (PROPAGATION EN CHAMP LIBRE), INFLUENCE DE L'ENVIRONNEMENT SUR L'EFFET D'ECRAN. DESCRIPTION DES EXPERIENCES REALISEES: DISPOSITIFS, PROGRAMMES DE CALCUL. PROPOSITION D'UNE METHODE PLUS GENERALE FAISANT APPEL AU RAISONNEMENT INTRODUIT PAR KELLER ET A LA NOTION DE RAYONS ACOUSTIQUES

CONTRIBUTION A L'ETUDE DES EFFETS DU VENTS ET D'UN GRADIENT DE TEMPERATURE SUR L'EFFICACITE DES ECRANS ACOUSTIQUES

CONTRIBUTION A L'ETUDE DES EFFETS DU VENTS ET D'UN GRADIENT DE TEMPERATURE SUR L'EFFICACITE DES ECRANS ACOUSTIQUES PDF Author: Michel Rosen
Publisher:
ISBN:
Category :
Languages : fr
Pages : 120

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Book Description
MODELISATION DES DIFFERENTS PHENOMENES MIS EN JEU ET VALIDATION EXPERIMENTALEMENT SUR MODELES REDUITS. IL EST MONTRE QUE LA THEORIE GEOMETRIQUE DE LA DIFFRACTION EST BIEN ADAPTEE AU CALCUL D'EFFICACITE D'ECRANS DE FORMES DIVERSES ET D'ECRANS DE LONGUEUR FINIE. ON DETERMINE LA DIRECTION ET LA PHASE DES ONDES ACOUSTIQUES SE PROPAGEANT AU-DESSUS D'UN SOL IMPEDANT EN PRESENCE AU-DESSUS D'UN SOL IMPEDANT EN PRESENCE D'UN VENT ET D'UN GRADIENT DE TEMPERATURE QUELCONQUES PAR L'UTILISATION D'UNE METHODE GEOMETRIQUE.

Contribution à l'étude des effets du vent et d'un gradient de température sur l'efficacité des écrans acoustiques

Contribution à l'étude des effets du vent et d'un gradient de température sur l'efficacité des écrans acoustiques PDF Author: Michel Rosen
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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Congress Reports

Congress Reports PDF Author:
Publisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 1814

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L'impact des écrans acoustiques sur la valeur des maisons : une revue de la littérature

L'impact des écrans acoustiques sur la valeur des maisons : une revue de la littérature PDF Author: École des hautes études commerciales (Montréal, Québec). Institut d'économie appliquée
Publisher: Montréal : École des hautes études commerciales, Institut d'économie appliquée
ISBN:
Category :
Languages : fr
Pages : 58

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Adhesion Between Polymers and Concrete / Adhésion Entre Polymères Et Béton

Adhesion Between Polymers and Concrete / Adhésion Entre Polymères Et Béton PDF Author: H. R. Sasse
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 792

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Book Description
Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.

Dictionary of Building and Civil Engineering

Dictionary of Building and Civil Engineering PDF Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472

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Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Audio Effectiveness in Aviation

Audio Effectiveness in Aviation PDF Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 374

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Madness and Social Representations

Madness and Social Representations PDF Author: Denise Jodelet
Publisher: Univ of California Press
ISBN: 9780520078666
Category : Psychology
Languages : en
Pages : 324

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Book Description
A striking account of a colony for the mentally ill that forces a reconsideration of madness in society. What happens when the mentally ill are not isolated from society but are instead welcomed into it and invited to take a place in the fabric of the community? Are fear and rejection replaced by the understanding and sympathy often engendered by familiarity? Or are the barriers between the sane and the mad only strengthened? We have experienced a taste of this scenario in the U.S. in the last decade with the new emphasis on de-institutionalization, but Denise Jodelet takes us to an extraordinary community in France where the mentally ill have assumed a visible and prominent role for more than seventy years. The small French town of Ainay-le-Ch�teau and its environs are the site of a "family colony" for men, established in 1900. Here the patients ("lodgers") live with ordinary families ("foster parents"), hold jobs, and are free to move about the countryside. Jodelet's chronicle of daily life in the colony is made rich and vivid by extensive ethnographic material as she unravels a complex set of relationships, ultimately finding that while some of the barriers between the "other" and the larger society have been overcome, new ones have arisen in their place. This unique social experiment provides invaluable social and cultural insights, illuminating many fundamental issues in psychology, psychiatry, and sociology.

Quantum Mechanics, Volume 3

Quantum Mechanics, Volume 3 PDF 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.