Results 21 to 30 of about 1,017,520 (318)
Numerical analysis of some partial differential equations with fractal-fractional derivative
AIMS Mathematics, 2023 In this study, we expanded the partial differential equation framework to which fractal-fractional differentiation can be applied. For this, we employed the generalized Mittag-Leffler function, and the fractal-fractional derivatives based on the power ...
Nadiyah Hussain Alharthi +2 more
doaj +1 more source
Partial Order Rank Features in Colour Space
Applied Sciences, 2020 Partial orders are the natural mathematical structure for comparing multivariate data that, like colours, lack a natural order. We introduce a novel, general approach to defining rank features in colour spaces based on partial orders, and show that it is
Fabrizio Smeraldi +3 more
doaj +1 more source
Healthcare Analytics, 2023 This study presents a fractional mathematical model based on nonlinear Partial Differential Equations (PDEs) of fractional variable-order derivatives for the host populations experiencing transmission and evolution of the Severe Acute Respiratory ...
Hayman Thabet, Subhash Kendre
doaj +1 more source
Non-singular spherical harmonic expressions of geomagnetic vector and gradient tensor fields in the local north-oriented reference frame [PDF]
Geoscientific Model Development, 2015 General expressions of magnetic vector (MV) and magnetic gradient tensor (MGT) in terms of the first- and second-order derivatives of spherical harmonics at different degrees/orders are relatively complicated and singular at the poles. In this paper, we
J. Du, C. Chen, V. Lesur, L. Wang
doaj +1 more source
Generalized linear model for partially ordered data [PDF]
Statistics in Medicine, 2011 Within the rich literature on generalized linear models, substantial efforts have been devoted to models for categorical responses that are either completely ordered or completely unordered. Few studies have focused on the analysis of partially ordered outcomes, which arise in practically every area of study, including medicine, the social sciences ...
Qiang, Zhang, Edward Haksing, Ip
openaire +2 more sources
Homotopy-Sumudu transforms for solving system of fractional partial differential equations
Advances in Difference Equations, 2020 In this paper, we investigate the Sumudu transforms and homotopy analysis method (S-HAM) for solving a system of fractional partial differential equations. A general framework for solving such a kind of problems is presented.
A. K. Alomari
doaj +1 more source
Fast Learning of MNL Model from General Partial Rankings with Application to Network Formation Modeling [PDF]
Web Search and Data Mining, 2021 Multinomial Logit (MNL) is one of the most popular discrete choice models and has been widely used to model ranking data. However, there is a long-standing technical challenge of learning MNL from many real-world ranking data: exact calculation of the ...
Jiaqi W. Ma, Xingjian Zhang, Qiaozhu Mei
semanticscholar +1 more source
Journal of Function Spaces, 2022 In general, solving fractional partial differential equations either numerically or analytically is a difficult task. However, mathematicians have tried their best to make the task easy and promoted various techniques for their solutions. In this regard,
Saadia Masood +8 more
doaj +1 more source
Exact SMEFT formulation and expansion to O $$ \mathcal{O} $$ (v 4/Λ4)
Journal of High Energy Physics, 2020 The Standard Model Effective Field Theory (SMEFT) theoretical framework is increasingly used to interpret particle physics measurements and constrain physics beyond the Standard Model.
Chris Hays +3 more
doaj +1 more source
Leading all-loop quantum contribution to the effective potential in general scalar field theory
Journal of High Energy Physics, 2023 The RG equation for the effective potential in the leading log (LL) approximation is constructed which is valid for an arbitrary scalar field theory in 4 dimensions.
D. I. Kazakov +2 more
doaj +1 more source