Results 21 to 30 of about 531,541 (320)

Contact Analysis and Friction Prediction of Non-Gaussian Random Surfaces

open access: yesApplied Sciences, 2022
Engineering surfaces exhibit asymmetrical height distributions due to certain types of surface finishing and running-in process. This non-Gaussian surface reflects different contact performances and tribological properties.
Jinzhao Ren, Huiqun Yuan
doaj   +1 more source

Third-order transport coefficients for localised and delocalised charged-particle transport [PDF]

open access: yes, 2017
We derive third order transport coefficients of skewness for a phase-space kinetic model that considers the processes of scattering collisions, trapping, detrapping and recombination losses.
Cocks, Daniel   +5 more
core   +3 more sources

Effect of Process Parameters on the Surface Microgeometry of a Ti6Al4V Alloy Manufactured by Laser Powder Bed Fusion: 3D vs. 2D Characterization

open access: yesMetals, 2022
The influence of the main process parameters, laser power, point distance and time exposure, on the surface microgeometry of Ti6Al4V specimens produced by a pulsed powder bed fusion process was investigated.
Alberto Molinari   +6 more
doaj   +1 more source

ANALISIS UMUR REPRODUKSI PALING AWAL DAN PALING AKHIR SERTA PUNCAK FERTILITAS PADA WANITA DI SETIAP KABUPATEN DAN KOTA DI PROVINSI BANTEN

open access: yesJurnal Lebesgue, 2023
The birth rate (fertility) is one of the factors that influences the increase in population. Banten Province has 8 districts and cities with different fertility rates.
Rani Septiani Sukandar   +2 more
doaj   +1 more source

Analytical Derivations of New Specifications for Stochastic Frontiers with Applications

open access: yesMathematics, 2022
In this paper, we propose the analytical derivations of new specifications for the stochastic frontier (SF) approach. In order to avoid some limitations of the traditional SF method, we introduce dependence between the two error components through copula
Graziella Bonanno, Filippo Domma
doaj   +1 more source

Exploration of variance, autocorrelation, and skewness of deviations from lactation curves as resilience indicators for breeding.

open access: yesJournal of Dairy Science, 2019
The ability of a cow to cope with environmental disturbances, such as pathogens or heat waves, is called resilience. To improve resilience through breeding, we need resilience indicators, which could be based on the fluctuation patterns in milk yield ...
M. Poppe   +3 more
semanticscholar   +1 more source

A Viable Approach to Mitigating Irreproducibility

open access: yesStats, 2021
In a recent article, Trafimow suggested the usefulness of imagining an ideal universe where the only difference between original and replication experiments is the operation of randomness.
David Trafimow, Tonghui Wang, Cong Wang
doaj   +1 more source

The visual reaction time distribution in the tasks with different demands on information processing

open access: yesActa Gymnica, 2014
Background:Reaction tests are a part of the neuropsychological assessment of the individual. The design of these tests and selection of the appropriate measures of reaction time (RT) should come out from the distribution qualities of RTs.
Rudolf Psotta
doaj   +1 more source

The Process of price formation and the skewness of asset returns [PDF]

open access: yes, 2006
Distributions of assets returns exhibit a slight skewness. In this note we show that our model of endogenous price formation \cite{Reimann2006} creates an asymmetric return distribution if the price dynamics are a process in which consecutive trading ...
Reimann, Stefan
core   +1 more source

Skew Randi�� Matrix and Skew Randi�� Energy

open access: yesTransactions on Combinatorics, 2014
Let $G$ be a simple graph with an orientation $ $, which assigns to each edge a direction so that $G^ $ becomes a directed graph. $G$ is said to be the underlying graph of the directed graph $G^ $. In this paper, we define a weighted skew adjacency matrix with Rand weight, the skew Randi matrix ${\bf R_S}(G^ )$, of $G^ $ as the real skew ...
Gu, Ran, Huang, Fei, Li, Xueliang
openaire   +3 more sources

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