Home > Search Results: keywords:"infrasound"
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Acoustics
 Papinčáková, Dominika ; Kuchařová, Monika (advisor) ; Bárta, Pavel (referee)
Detailed record
Assessment of noise exposure at different ways of rearing water fowl.
BRAUN, Petr
This Bachelor´s work describes the evaluation of noise exposure at different ways of breeding water fowl. Breed selected for measuring the goose Czech. The aim is to measure and verify the intensity of noise arising from the farms and backyard and evaluate that noise acting on the surroundings. The basis is to implement the measurement noise level in backyard farms and are growing in a farm really out of the growing season for selected habitats and compare readings with legislative and hygiene standards. If permissible limits are exceeded measured values, it will be essential to propose the necessary restrictive measures.
Detailed record
Processing flow visualisation records by correlation coefficient evaluation in sub-images
 Tesař, Václav ; Něnička, Václav
Authors introduced a new method of processing flow visualisation images,aiming at identification of instability structures. In principle, the method utilises the structures' coherence. In two digital images, recorded at slightly differentinstants of time, the pixel pairs from the same position in the images are interrogated one by one. In each, vectors of the recorded quantity values are formed from n x n pixels in immediate neighbourhood, which form the sub-image. The correlation coefficient is then computed for the vector pair. High positive values of the coefficient indicate absence of change whereas values near zero indicate chaotic changes. Of interest are negative values, which indicate a coherent motion.
Detailed record
Experimental investigations of a very long range infrasonic annular synthetic-jet
 Tesař, Václav ; Peszyński, K.
Authors investigated an annular synthetic jet required to reach to very large distances while operated at infrasonic frequency. Hot-wire measurements of velocity profiles indicate the range to be roughly 4-times the distance achievable with the steady jet generated in the sameannular nozzle.
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English