Results 21 to 30 of about 26,623 (268)

Shooting method with sign-changing nonlinearity [PDF]

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2015
In this paper, we study the existence of solution to a nonlinear system: \begin{align} \left\{\begin{array}{cl} -Δu_{i} = f_{i}(u) & \text{in } \mathbb{R}^n, u_{i} > 0 & \text{in } \mathbb{R}^n, \, i = 1, 2,\cdots, L % u_{i}(x) \rightarrow 0 & \text{uniformly as } |x| \rightarrow \infty \end{array} \right.
Cheng, Ze, Li, Congming
openaire   +2 more sources

Adaptive L1/2 Shooting Regularization Method for Survival Analysis Using Gene Expression Data

open access: yesThe Scientific World Journal, 2013
A new adaptive L1/2 shooting regularization method for variable selection based on the Cox’s proportional hazards mode being proposed. This adaptive L1/2 shooting algorithm can be easily obtained by the optimization of a reweighed iterative series of L1 ...
Xiao-Ying Liu   +4 more
doaj   +1 more source

Shooting method in the application of boundary value problems for differential equations with sign-changing weight function

open access: yesOpen Mathematics, 2022
In this paper, we use the shooting method to study the solvability of the boundary value problem of differential equations with sign-changing weight function: u″(t)+(λa+(t)−μa−(t))g(u)=0 ...
Yue Xu, Xiaoling Han
doaj   +1 more source

Application of Global Methods in Parallel Shooting [PDF]

open access: yesSIAM Journal on Numerical Analysis, 1993
A new divide-and-conquer method is proposed to employ a coarse grid discretization like multiple shooting does, but to solve the local problems in a ``boundary value problem-way''. A sophisticated error control is developed to combine local and global convergence of the Newton updating. An implementation, called the unbiased multiple shooting algorithm
Kramer, M.E., Mattheij, R.M.M.
openaire   +1 more source

Direct Integration of Boundary Value Problems Using the Block Method via the Shooting Technique Combined with Steffensen’s Strategy

open access: yesMathematics, 2019
This study is intended to evaluate numerically the solution of second order boundary value problems (BVPs) subject to mixed boundary conditions using a direct method.
Nadirah Mohd Nasir   +3 more
doaj   +1 more source

Investigation of Thermal Radiative Tangent Hyperbolic Nanofluid Flow Due to Stretched Sheet

open access: yesEast European Journal of Physics, 2023
The current study illuminates the enactment of a tangent hyperbolic nanofluid past a bidirectional stretchable surface. The phenomena of heat and mass transfer with joule heating, chemical reaction, and thermal radiation have been debated.
Muhammad Jawad   +2 more
doaj   +1 more source

Numerical nvestigation of the TE-polarized complex electromagnetic waves in an open nonhomogeneous layer

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021
Background. The purpose of this work is to study numerically TE-polarized waves in a layer filled with various dielectric materials. Material and methods.
E.Yu. Smol'kin, M.O. Snegur
doaj   +1 more source

Axisymmetric Flow and Heat Transfer in TiO2/H2O Nanofluid over a Porous Stretching-Sheet with Slip Boundary Conditions via a Reliable Computational Strategy

open access: yesEnergies, 2023
In this investigation, the motion of TiO2/H2O nano-structures towards heated and porous sheets by considering the MHD effect and partial slip at the boundary is inspected.
Tahir Naseem   +3 more
doaj   +1 more source

An Implementation of the Ray Shooting Method [PDF]

open access: yesProceedings of The Manchester Microlensing Conference: The 12th International Conference and ANGLES Microlensing Workshop — PoS(GMC8), 2008
Ray shooting is a powerful but numerically costly means of solving the lens equation. Unlike pure numerical root finding techniques, ray shooting can automatically address the problem of finite size effects by defining the target area and, if necessary, weighting rays according to a limb-darkening model.
Markus Hundertmark   +2 more
openaire   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

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