Results 11 to 20 of about 142,522 (303)

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

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

Multiplicative Concavity of the Integral of Multiplicatively Concave Functions [PDF]

open access: yesJournal of Inequalities and Applications, 2010
A real-valued function \(f:I\subseteq {\mathbb R} \rightarrow (0,\infty)\) is said to be multiplicatively convex if \[ f(x^{1/2}y^{1/2}) \leq f^{1/2}(x)f^{1/2}(y) \] for all \(x,y \in I\). And \(f\) is called multiplicatively concave if \(1/f\) is multiplicatively convex. Multiplicatively convexity on \(E\subseteq {\mathbb R}_+^2\) is defined similarly.
Yu-Ming Chu, Xiao-Ming Zhang
openaire   +4 more sources

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

Entropies and Their Concavity and Schur-Concavity Conditions

open access: yesIEEE Access, 2022
Concavity and Schur-concavity are two of the important properties of any entropy. Since Shannon’s classical entropy formulation, a number of generalized entropies have been proposed as parameterized generalizations of Shannon’s entropy. For such generalized entropies, the conditions under which they are concave and/or Schur-concave have ...
openaire   +2 more sources

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

Concave-Convex PDMP-based sampling

open access: yes, 2023
Recently non-reversible samplers based on simulating piecewise deterministic Markov processes (PDMPs) have shown potential for efficient sampling in Bayesian inference problems.
Paul Fearnhead (196964)   +1 more
core   +1 more source

Concave Compositions [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2011
Concave compositions are compositions (i.e. ordered partitions) of a number in which the parts decrease up to the middle summand(s) and increase thereafter. Perhaps the most surprising result is for even length, concave compositions where the generating function turns out to be the quotient of two instances of the pentagonal number theorem with ...
openaire   +2 more sources

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

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

Home - About - Disclaimer - Privacy