Results 11 to 20 of about 1,315,232 (288)

An Adaptive Covariance Scaling Estimation of Distribution Algorithm

open access: yesMathematics, 2021
Optimization problems are ubiquitous in every field, and they are becoming more and more complex, which greatly challenges the effectiveness of existing optimization methods.
Qiang Yang   +6 more
doaj   +1 more source

Analysis of concrete damage during testing by explosive charges

open access: yesVojnotehnički Glasnik, 1996
The results of a new testing method for the determination of concrete strength under pressure using small quantities of explosive charges are given. The method is based on the measurement of the crater size on a concrete surface after explosion.
Dragoljub Cvetković
doaj   +1 more source

Self-adaptation of mutation distribution in evolutionary algorithms [PDF]

open access: yes, 2007
This paper is posted here with permission from IEEE - Copyright @ 2007 IEEEThis paper proposes a self-adaptation method to control not only the mutation strength parameter, but also the mutation distribution for evolutionary algorithms. For this purpose,
Tinos, R, Yang, S
core   +2 more sources

Quantitative Models for the Effects of Differential-pressure Manometer Scale Resolution and Hot-wire Voltage Measurement Bit Depth on Gaussian Fluctuation Characteristics [PDF]

open access: yesJournal of Applied Fluid Mechanics
A rigorous analytical framework quantifies the influence of instrument resolution on flow-velocity statistics. Differential-pressure fluctuations recorded by a Pitot tube are assumed Gaussian, whereas pressure-transducer graduations are treated as a ...
H. Fukuhara, H. Suzuki, T. Kouchi
doaj   +1 more source

Generalised discretisation of continuous-time distributions

open access: yesThe Journal of Engineering, 2020
In this study, the definition of discretisation that was proposed recently for continuous-time distributions is made applicable not only to ordinary functions but to a variety of distributions including weak derivatives such that they could be viewed ...
Shin Kawai, Noriyuki Hori, Noriyuki Hori
doaj   +1 more source

Higher order moments of the density field in a parameterized sequence of non-gaussian theories [PDF]

open access: yes, 1998
We calculate the higher order moments in a sequence of models where the initial density fluctuations are drawn from a chi^2_nu distribution with a power-law power spectrum.
Antoniadis   +44 more
core   +2 more sources

K-L Divergence Based Image Classification and the Application [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2021
Image classification is widely used in many fields. Traditional metric learning based classification methods always maximize between-class distances and minimize within-class distances based on features calculated from each individual.
Fuhua Chen, Xuemao Zhang, Guangtai Ding
doaj  

Applying Gaussian distributed constraints to Gaussian distributed variables [PDF]

open access: yesInformation Fusion, 2016
34 pages, 12 figures, accepted to Information Fusion. Updated to fix minor errors in equations (33), (34), and (B.12)
Andrew W. Palmer   +2 more
openaire   +2 more sources

3D Face Reconstruction From Single 2D Image Using Distinctive Features

open access: yesIEEE Access, 2020
3D face reconstruction is considered to be a useful computer vision tool, though it is difficult to build. This paper proposes a 3D face reconstruction method, which is easy to implement and computationally efficient. It takes a single 2D image as input,
H. M. Rehan Afzal   +5 more
doaj   +1 more source

Effects of vertical ship exhaust plume distributions on urban pollutant concentration – a sensitivity study with MITRAS v2.0 and EPISODE-CityChem v1.4 [PDF]

open access: yesGeoscientific Model Development, 2022
The modeling of ship emissions in port areas involves several uncertainties and approximations. In Eulerian grid models, the vertical distribution of emissions plays a decisive role for the ground-level pollutant concentration.
R. Badeke   +3 more
doaj   +1 more source

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