Results 1 to 10 of about 229,971 (268)

Cluster minimal sufficient balance (CMSB): an efficient covariate balancing randomization method for cluster randomized trials [PDF]

BMC Medical Research Methodology
Background Cluster randomized trials (CRTs) require balanced baseline covariates to yield unbiased estimates of treatment effects. Existing approaches such as constrained randomization can improve balance but may compromise allocation randomness.
Jiaxin Cai, Shanshan Suo, Valirie Ndip, Carole Khairallah, Binyan Zhang, Lingxia Zeng, Hong Yan, Fang Shao, Tao Chen, Chao Li   +9 more
doaj   +2 more sources

Minimal Rank Properties of Outer Inverses with Prescribed Range and Null Space

Mathematics, 2023
The purpose of this paper is to investigate solvability of systems of constrained matrix equations in the form of constrained minimization problems.
Dijana Mosić, Predrag S. Stanimirović, Spyridon D. Mourtas   +2 more
doaj   +1 more source

Superiorization with a Projected Subgradient Algorithm on the Solution Sets of Common Fixed Point Problems

Mathematics, 2023
In this work, we investigate a minimization problem with a convex objective function on a domain, which is the solution set of a common fixed point problem with a finite family of nonexpansive mappings.
Alexander J. Zaslavski
doaj   +1 more source

Deep Constrained Energy Minimization for Hyperspectral Target Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Hyperspectral images contain abundant spectral information, which provides great potential for detecting targets that cannot be analyzed with color images.
Xiaoli Yang, Min Zhao, Shuaikai Shi, Jie Chen   +3 more
doaj   +1 more source

The method for solving the extension of general of the split feasibility problem and fixed point problem of the cutter

Journal of Inequalities and Applications, 2022
This paper first introduces a new iterative method for weak and strong convergence theorem to demonstrate the estimation potential for a fixed point of the cutter and the finite general split feasibility problem.
Kanyanee Saechou, Atid Kangtunyakarn
doaj   +1 more source

Bayesian Constrained Energy Minimization for Hyperspectral Target Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
For better performance of hyperspectral target detectors, the prior target spectrum is expected to be accurate and consistent with the target spectrum in the hyperspectral image to be detected.
Jing Zhang, Rui Zhao, Zhenwei Shi, Ning Zhang, Xinzhong Zhu   +4 more
doaj   +1 more source

Improving leaf chlorophyll content estimation through constrained PROSAIL model from airborne hyperspectral and LiDAR data

International Journal of Applied Earth Observations and Geoinformation, 2022
Leaf chlorophyll plays an important role in forest management and ecosystem balance. Hyperspectral images have been widely applied in leaf chlorophyll content (LCC) estimation.
Lu Xu, Shuo Shi, Wei Gong, Zixi Shi, Fangfang Qu, Xingtao Tang, Bowen Chen, Jia Sun   +7 more
doaj   +1 more source

Study of constrained minimal supersymmetry [PDF]

Physical Review D, 1994
Taking seriously phenomenological indications for supersymmetry, we have made a detailed study of unified minimal SUSY, including effects at the few percent level in a consistent fashion. We report here a general analysis without choosing a particular unification gauge group.
Kane, G. L., Kolda, Chris, Roszkowski, Leszek, Wells, James D.   +3 more
openaire   +3 more sources

Nonexistence and Existence of Solutions with Prescribed Norms for Nonlocal Elliptic Equations with Combined Nonlinearities

Mathematics, 2022
In this paper, we study the nonlocal equation ∫RN|u(x)|2dxγΔu=λu+μ|u|q−2u+|u|p−2u, xinRN having a prescribed mass ∫RN|u(x)|2dx=c2, where N≥3, μ, γ∈(0,+∞), q∈(2,2∗), c is a positive constant, p, q∈(2,2∗) with p≠q and 2∗=2NN−2.
Baoqiang Yan, Donal O’Regan, Ravi P. Agarwal   +2 more
doaj   +1 more source

Constrained via minimization [PDF]

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 1993
It is shown that the general two-layer constrained via minimization problem and the three-layer constrained via minimization problem for HVH topologies are NP-hard. A backtracking algorithm and a heuristic algorithm for the three-layer HVH constrained via minimization problem are proposed. The backtracking algorithm can also be used for three-layer non-
K. Ahn, S. Sahni
openaire   +1 more source