Search for dissertations about: "sound technology"

Showing result 21 - 25 of 508 swedish dissertations containing the words sound technology.

2. 21. Quantum acoustics with propagating phonons

   Author : Maria Ekström; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; phonon router; unidirectional transducer; phonon; Electromagnetically Induced Transparency; Surface acoustic wave; artificial atom; interdigital transducer; quantum acoustics; qubit; superconducting circuits;

   Abstract : Surface acoustic waves (SAWs) are mechanical vibrations that propagate on the surface of solids while dissipating little power, consequently enabling them to propagate freely over long distances. The speed and wavelength of SAWs are reduced a five order of magnitude compared to when light is used as a carrier at gigahertz frequencies. READ MORE

4. 22. Climate Change and Industrial Technology Transfer. A Study of Chinese Conditions

   Author : Joakim Nordqvist; Miljö- och energisystem; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environment; Emissions; China; Development; Bureaucracy; Cement; Miljöteknik; kontroll av utsläpp; pollution control; Environmental technology; Technology management; Sustainability; Policy; Energy; Modernisation;

   Abstract : Motivated by concerns about anthropogenic climate change, this thesis contributes to the better appreciation of mechanisms that would allow actors in China, foreign as well as Chinese, to exert a positive influence on the country's industrial technology status. China is the world's second largest emitter of greenhouse gases - the lions' share of which emanates from industrial and electricity production. READ MORE

5. 23. The effects of damping treatment on the sound transmission loss of honeycomb panels

   Author : Sathish Kumar Ramanathan; Leping Feng; Alexander Peiffer; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sandwich Structures; Honeycomb Panels; Sound Transmission; Loss Factor; Damping; Sound Radiation; Acoustics; Akustik;

   Abstract : In the industry, all passenger vehicles are treated with damping materials to reduce structure-borne sound. Though these damping materials are effective to attenuate structure-borne sound, they have little or no effect on the air-borne sound transmission. READ MORE

6. 24. Regenerative Chatter Vibration in Indexable Drills : Modeling and Simulation

   Author : Amir Parsian; Tomas Beno; Mahdi Eynian; Martin Magnevall; Erhan Budak; Högskolan Väst; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sound; Vibrations; Drill; Indexable; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

   Abstract : An indexable insert drill is a drill which uses cutting inserts to make holes. Undesirable sound generated by this type of drill has always been considered as a problem in workshops. The focus of this thesis is to investigate the mechanism behind these vibrations, to model it and to provide guidelines for reducing the sound in future drill designs. READ MORE

7. 25. The urban form and the sound environment - Tools and approaches

   Author : Laura Estévez Mauriz; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; road traffic noise; prediction; Urban sound planning; modelling; quiet side; urban systems; traffic dynamics;

   Abstract : Cities are always confronted with transition and adaptation. Awareness on urban environmental quality is leading the vision about the built environment’s resilience and sustainability, highlighting the importance of a multidisciplinary framework for urbanisation processes. READ MORE