Results 11 to 20 of about 100,999 (202)

Seat-to-Head Transmissibility Responses of Seated Human Body Coupled with Visco-Elastic Seats

open access: yesVibration, 2022
This study investigated the seat-to-head vibration transmissibility (STHT) responses of 58 subjects (31 males and 27 females) seated on three different elastic seats with (WB) and without back support (NB) and under three levels of vertical vibration (0 ...
K. N. Dewangan, Yumeng Yao, S. Rakheja
doaj   +1 more source

Calculation of cams with concave profile in the MATHCAD system [PDF]

open access: yesОмский научный вестник, 2022
The article shows the features of the cam with concave profile, the method of kinematic calculation of the pusher when it moves along a concave and rounded surface.
V. V. Ryndin   +3 more
doaj   +1 more source

Gender and Anthropometric Effects on Seat-to-Head Transmissibility Responses to Vertical Whole-Body Vibration of Humans Seated on an Elastic Seat

open access: yesVibration, 2023
This study investigated the effects of gender and ten different anthropometric parameters on the vertical vibration transmission from seat to the head of the body seated on an elastic seat.
Yumeng Yao   +2 more
doaj   +1 more source

Investigating the influences of concave depths on stormwater runoff and pollution retention of urban grasslands

open access: yesWater Science and Technology, 2022
In this study, scale-based runoff plots of concave grasslands were designed and simulated rainfall experiments were conducted to investigate their retention effectiveness for runoff volume and pollutant loads, and to analyze the influences of concave ...
Wen Liu, Zhixiang Lu
doaj   +1 more source

Effect of Concave Stave on Class I Barrel-Stave Flextensional Transducer

open access: yesMicromachines, 2021
To meet the requirements of low frequency, high power, small size and light weight, a type of Class I barrel-stave flextensional transducer employing improved concave stave is presented.
Duo Teng, Xiaoyong Liu, Feng Gao
doaj   +1 more source

CONCAVE PDC CUTTER

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2022
The relevance. Vibrations of a drill string of any origin, arising while drilling a well, lead to a decrease in the quality of the work performed. The known methods of combating this phenomenon are technically and technologically complicated.
Vyacheslav V. Neskoromnykh   +3 more
doaj   +1 more source

On sampling from a log-concave density using kinetic Langevin diffusions [PDF]

open access: yesBernoulli, 2018
Langevin diffusion processes and their discretizations are often used for sampling from a target density. The most convenient framework for assessing the quality of such a sampling scheme corresponds to smooth and strongly log-concave densities defined ...
A. Dalalyan, L. Riou-Durand
semanticscholar   +1 more source

A New Approach to Concavity Fuzzification

open access: yesJournal of Mathematics, 2021
In this paper, we introduce a more general approach to the fuzzification of fuzzy concavity. More specifically, the degree of L,M-fuzzy concavity is introduced and characterized as a generalization of L-concave structure and L,M-fuzzy concave structure ...
Ibtesam Alshammari   +2 more
doaj   +1 more source

Dynamic Response of a Beam Subjected to Moving Load and Moving Mass Supported by Pasternak Foundation

open access: yesShock and Vibration, 2012
This paper presents the dynamic response of an Euler- Bernoulli beam supported on two-parameter Pasternak foundation subjected to moving load as well as moving mass. Modal analysis along with Fourier transform technique is employed to find the analytical
Rajib Ul Alam Uzzal   +2 more
doaj   +1 more source

Concave Diffraction Gratings by High-Precision Injection Moulding

open access: yesProceedings, 2019
As an example of the applicable process chain, a concave grating (1175 grooves/mm) with an active area of approx. 24 mm to 24 mm has been replicated by means of electroplating and further by injection moulding with polycarbonate, resulting in a surface ...
Manuel Walch, Alexander Wörle
doaj   +1 more source

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