Ismail Mostafa Refat (6 results)

Taschenbuch. Condition: Neu. Adaptable Theories for modeling Urban Noise Propagation | Urban Noise Propagation | Mostafa Refat Ismail | Taschenbuch | 276 S. | Englisch | 2013 | LAP LAMBERT Academic Publishing | EAN 9783659355349 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.

Paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This work represents an investigation of the roles of specular and diffuse reflections in urban noise propagation with a view towards developing a simple predictive technique for long distance propagation. It is established that models based only on specular reflection and surface absorption are not sufficiently accurate to explain measured data as scattering of sound by building facades is significant. A computer model of sound propagation in a simple street was developed to take account of the probabilities associated with the branching nature of the reflection history. A simplified theory was developed incorporating an effective diffusion coefficient which increases with the order of reflection to take account of all the mixed specular-diffuse interactions. Two experimental techniques have been developed for measuring the diffusion coefficient of street facades and applied to a scale model experiment. The results obtained for values of diffusion coefficient showed the expected trend with increasing the façade irregularities. 276 pp. Englisch.

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Ismail Mostafa RefatMostafa earned his Ph.D. degree from the School of Architecture and Building Engineering, at the University of Liverpool, UK 2003. He worked at EPSRC funded projects and Lecturing at the University of Liverpool ti.

Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This work represents an investigation of the roles of specular and diffuse reflections in urban noise propagation with a view towards developing a simple predictive technique for long distance propagation. It is established that models based only on specular reflection and surface absorption are not sufficiently accurate to explain measured data as scattering of sound by building facades is significant. A computer model of sound propagation in a simple street was developed to take account of the probabilities associated with the branching nature of the reflection history. A simplified theory was developed incorporating an effective diffusion coefficient which increases with the order of reflection to take account of all the mixed specular-diffuse interactions. Two experimental techniques have been developed for measuring the diffusion coefficient of street facades and applied to a scale model experiment. The results obtained for values of diffusion coefficient showed the expected trend with increasing the façade irregularities.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 276 pp. Englisch.

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This work represents an investigation of the roles of specular and diffuse reflections in urban noise propagation with a view towards developing a simple predictive technique for long distance propagation. It is established that models based only on specular reflection and surface absorption are not sufficiently accurate to explain measured data as scattering of sound by building facades is significant. A computer model of sound propagation in a simple street was developed to take account of the probabilities associated with the branching nature of the reflection history. A simplified theory was developed incorporating an effective diffusion coefficient which increases with the order of reflection to take account of all the mixed specular-diffuse interactions. Two experimental techniques have been developed for measuring the diffusion coefficient of street facades and applied to a scale model experiment. The results obtained for values of diffusion coefficient showed the expected trend with increasing the façade irregularities.