Results 81 to 90 of about 11,617 (142)

NASA patent abstracts bibliography: A continuing bibliography. Section 1: Abstracts (supplement 07) [PDF]

This bibliography is issued in two sections: Section 1 - Abstracts, and Section 2 - Indexes. This issue of the Abstract Section cites 158 patents and applications for patent introduced into the NASA scientific and technical information system during the

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Lightweight and mechanically robust PVA/GO composite aerogels with synergistic broadband sound absorption

Journal of Materials Research and Technology
Lightweight polyvinyl alcohol (PVA) aerogels with two matrix concentrations (P5 and P7.5) and their graphene oxide (GO) reinforced composites at different filler loadings (PxG1, PxG2, and PxG3) were prepared via freeze-casting method, combining physical ...
Masoud Khosravipour, Fariedeh Golbabaei, Mohammadreza Monazam Esmaeelpour, Iraj Alimohammadi   +3 more
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Designing community surveys to provide a basis for noise policy [PDF]

After examining reports from a large number of social surveys, two areas were identified where methodological improvements in the surveys would be especially useful for public policy.
Fields, J. M.
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Optimal output feedback control of linear systems in presence of forcing and measurement noise [PDF]

The problem of obtaining an optimal control law, which is constrained to be a linear feedback of the available measurements, for both continuous and discrete time linear systems subjected to additive white process noise and measurement noise was ...
Joshi, S. M.
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Experimental Research and Theoretical Analysis of the Coupling Mechanism Between Microstructure and Acoustics in Porous Materials

Applied Sciences
Based on the three-parameter approximate JCAL analytical model (hereinafter referred to as the three-parameter model), this study conducted an in-depth analysis of the effects of porosity, median pore size, and pore size standard deviation on the ...
Haoshuai Suo, Junhuai Xu, Yaohan Feng, Dongsheng Liu, Pei Tang, Ya Feng   +5 more
doaj   +1 more source

Thermo-Acoustic Properties of Four Natural Fibers, Musa textilis, Furcraea andina, Cocos nucifera, and Schoenoplectus californicus, for Building Applications

Buildings
Natural and bio-based construction materials such as bamboo, cork, or natural fiber composites offer a promising solution for enhancing the environmental sustainability of buildings.
Luis Bravo-Moncayo, Marcelo Argotti-Gómez, Oscar Jara, Virginia Puyana-Romero, Giuseppe Ciaburro, Víctor H. Guerrero   +5 more
doaj   +1 more source

How Should Heavy-Duty Trucks Be Taxed? [PDF]

This paper develops and implements an analytical framework for estimating optimal taxes on the fuel use and mileage of heavy-duty trucks, accounting for external costs from congestion, accidents, pavement damage, noise, energy security, and local and ...
Parry, Ian W.H.
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Wind tunnel wall interference in V/STOL and high lift testing: A selected, annotated bibliography [PDF]

This bibliography, with abstracts, consists of 260 citations of interest to persons involved in correcting aerodynamic data, from high lift or V/STOL type configurations, for the interference arising from the wind tunnel test section walls.
Cole, K. L., Mineck, R. E., Tuttle, M. H.   +2 more
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Wind tunnel wall interference (January 1980 - May 1988): A selected, annotated bibliography [PDF]

This selected bibliography lists 423 entries on the subject of wall interference during testing in wind tunnels. It is the third in a series of bibliographies on the subject.
Cole, Karen L., Tuttle, Marie H.
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The Value of Sample Information for Water Quality Management [PDF]

There is considerable interest in watershed-based pollution water quality protection but the approach can be highly information intensive (USEPA 2004, NRC 2000). This study examines the value of different types and levels of information for water quality
Shortle, James S., Sung, Hwansoo
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