Evaluating acoustic absorption coefficients by comparative analysis—Experimental part

1992 ◽  
Vol 91 (2) ◽  
pp. 704-712 ◽  
Author(s):  
Charles A. Mills ◽  
Charles E. Spiekermann
Keyword(s):  
Comparative Analysis ◽  
Acoustic Absorption ◽  
Absorption Coefficients ◽  
Experimental Part

scholarly journals COMPARATIVE ANALYSIS OF SOUND SUPRESSING LIGHTWEIGHT STRUCTURED PANELS AND MODERN NOISE PROTECTION MEANS

Akustika ◽  
2019 ◽  
Vol 32 ◽  
pp. 30-35
Author(s):  
Valery Murzinov ◽  
Pavel Murzinov ◽  
Irina Ivanovna
Keyword(s):  
Comparative Analysis ◽  
Sound Absorption ◽  
Absorption Coefficients ◽  
Acoustic Insulation ◽  
Materials Used ◽  
And Control

This article provides an overview of modern soundproof materials and structures used for acoustic insulation. Presently, we can find plenty of such noise insulation and sound absorption materials. One of the popular means to reduce noise and control sound today is the acoustic panels able to suppress and absorb different sounds. The article also analyses the effectiveness of acoustic and sound protection materials used in the industrial sphere. The comparative analysis of the sound protection and absorption effectiveness is carried out using sound absorption coefficients. It also presents the construction of a sound suppressing lightweight structured panel designed by the authors. The authors noted that these panels have better characteristics in comparison with other modern sound protection materials.

Acoustic Absorption Coefficients of the Surface of Laboratory Animals

1958 ◽  
Vol 30 (12) ◽  
pp. 1105-1111
Author(s):  
Eugene Ackerman ◽  
Robert W. Farwell ◽  
Fujio Oda ◽  
Adam Anthony
Keyword(s):  
Laboratory Animals ◽  
Acoustic Absorption ◽  
Absorption Coefficients

Analiza właściwości wybranych rozwiązań rozproszonych systemów plików

2017 ◽  
Vol 5 (23) (3) ◽  
pp. 53-73
Author(s):  
Karolina Kula ◽  
Marcin Markowski
Keyword(s):  
Comparative Analysis ◽  
Transfer Rate ◽  
Data Transfer ◽  
File Systems ◽  
Evaluation Criterion ◽  
Distributed File Systems ◽  
Data Transfer Rate ◽  
Experimental Part ◽  
Experimental Testbed

W artykule przedstawiono analizę porównawczą trzech najpopularniejszych rozproszonych systemów plików: Ceph, LizardFS, GlusterFS. Głównym kryterium oceny badanych systemów była ich wydajność, rozumiana jako liczba operacji zapisu i odczytu w jednostce czasu oraz maksymalny transfer danych. Analizę oparto na wynikach licznych eksperymentów przeprowadzonych w opracowanym w tym celu stanowisku badawczym. Część badawczą poprzedzono przeglądem technologii oraz najpopularniejszych istniejących systemów tego typu. W pracy przedstawiono wyniki eksperymentów, ich analizę oraz praktyczne wnioski. In this paper we present a comparative analysis of three most popular distributed file systems: Ceph, LizardFS nad GlusterFS. The main evaluation criterion was the efficiency of systems, meant as the number of read and write operation per second and maximum data transfer rate. The analysis is based on results of many experiments conducted in experimental testbed, prepared for this purpose. Experimental part of the paper is preceded with a survey of technology related to most important distributed file systems. The results of experiments have been presented and analyzed, also some practical conclusions have been formulated.

COMPARATIVE ANALYSIS OF SOME COMMODITY CHARACTERISTICS AND TECHNOLOGICAL PARAMETERS OF GRAY AND BLACK ALDER LEAVES

2021 ◽  
pp. 69-73
Author(s):  
Nesterov G.V. ◽  
Nesterova N.V.
Keyword(s):  
Comparative Analysis ◽  
Raw Material ◽  
Alnus Incana ◽  
Middle Zone ◽  
Technological Parameters ◽  
Absorption Coefficients ◽  
Black Alder ◽  
Technological Factors ◽  
Bulk Mass ◽  
The Russian Federation

The article contains the results of studying a number of technological factors: bulk mass, bulk mass, specific gravity, porosity, free volume of the raw material layer, extractant absorption coefficients; as well as data on the analysis of some numerical quality indicators (humidity, total ash, ash insoluble in 10% solution of hydrochloric acid 10%) of gray and black alder (Alnus incana (L.) Moench и A. Glutinosa (L.) Gaerth ) leaves harvested in the middle zone of the Russian Federation. The obtained data are planned to be taken into account in the technological process of production of extraction preparations from the leaves of gray and black alder.

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