Evaluating acoustic absorption coefficients by comparative analysis—Theory part

1992 ◽  
Vol 91 (2) ◽  
pp. 696-703 ◽  
Author(s):  
Charles A. Mills ◽  
Charles E. Spiekermann
Keyword(s):  
Comparative Analysis ◽  
Acoustic Absorption ◽  
Absorption Coefficients ◽  
Analysis Theory

scholarly journals FORECASTING THE DIRECTIONS OF MODERNIZATION OF ECONOMIC SECTORS AND REGIONS OF THE COUNTRY DURING THE DEVELOPMENT OF THE EIGHTH TECHNOLOGICAL ORDER

2021 ◽  
Vol 5 (6) ◽  
pp. 23-42
Author(s):  
Valery V. Glushchenko
Keyword(s):  
Comparative Analysis ◽  
Technological Development ◽  
Historical Analysis ◽  
Ecosystem Approach ◽  
Economic Sectors ◽  
Conceptual Approach ◽  
Analysis Theory ◽  
Methods Of Synthesis ◽  
Expert Assessments ◽  
Project Model

The subject of the article is forecasting the directions of modernization of economic sectors and regions of the country during the development of the eighth technological order (ETO); the object of the article is the 8th technological order in the economy of the country; the purpose of the work is to reduce the risks of sustainable development of the economy and society during the formation of the eighth technological order; to achieve this goal, the following tasks are solved: synthesis of a systematic and descriptive model of the 8th technological order (ETO); formation of sectoral system models of scientific and technological development (fuel and energy complex, military-technical sphere, country region); formation of a project model of organizations' activities; comparative analysis of process and subject models of organization functioning; analysis of factors and methods of synthesis of innovative ideas during the formation of the 8th technological order; comparative analysis of three conceptual approaches in the modernization of the economy (theory of technological orders; ecosystem approach; concepts of convergent (nature-like) technologies); description of methods for modeling innovative projects; study of methods for forming an innovative project business plan; scientific methods in the article are historical analysis; theory of technological orders, theory of forecasting and planning, heuristic synthesis, modeling, logical and structural analysis of projects, expert assessments; scientific novelty of the article is determined by: development of methods for forecasting the processes of modernization of economic sectors and regions of the country; comparative analysis of three concepts of modernization (theory of technological orders; ecosystem approach; the concept of the development of nature-like technologies); the development of a conceptual approach to the modernization of large technological systems within the framework of the theory of technological orders.

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
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