Results 11 to 20 of about 1,048,571 (242)

OPTIMAL LINEAR IMAGE COMBINATION [PDF]

open access: yesThe Astrophysical Journal, 2011
A simple, yet general, formalism for the optimized linear combination of astrophysical images is constructed and demonstrated. The formalism allows the user to combine multiple undersampled images to provide oversampled output at high precision. The proposed method is general and may be used for any configuration of input pixels and point spread ...
Rowe, Barnaby   +2 more
openaire   +2 more sources

The Nullity, Rank, and Invertibility of Linear Combinations of k-Potent Matrices

open access: yesMathematics, 2020
Baksalary et al. (Linear Algebra Appl., doi:10.1016/j.laa.2004.02.025, 2004) investigated the invertibility of a linear combination of idempotent matrices. This result was improved by Koliha et al.
Marina Tošić   +3 more
doaj   +1 more source

Spatial analysis of Environmental Suitability of Shiraz City Using Environmental Suitability Analysis [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2018
Urban Physical development has been the major concern of urban planners during recent years, therefore, better understanding of urban and its development is necessary for sustainable development.
Dr.Mohammadreza Rezaei   +2 more
doaj   +1 more source

Incorporating a New Summary Statistic into the Min–Max Approach: A Min–Max–Median, Min–Max–IQR Combination of Biomarkers for Maximising the Youden Index

open access: yesMathematics, 2021
Linearly combining multiple biomarkers is a common practice that can provide a better diagnostic performance. When the number of biomarkers is sufficiently high, a computational burden problem arises. Liu et al. proposed a distribution-free approach (min–
Rocío Aznar-Gimeno   +4 more
doaj   +1 more source

Verifiable computation scheme of batch matrix multiplication based on triple perturbation and linear combination

open access: yes网络与信息安全学报
With the development of cloud computing and internet of things technology, verifiable computing has been widely used as a new computing technology. While verifiable computing brings convenience to users, there are also security challenges: data privacy ...
Tianpeng ZHANG, Zhiyu REN, Xuehui DU, Haichao WANG
doaj   +5 more sources

Combining Linear and Nonlinear Diffusion [PDF]

open access: yesAdvanced Nonlinear Studies, 2004
Abstract In this paper we study a generalized porous medium equation where the diffusion rate, say m(x) -spatially heterogeneous- is assumed to be linear, m = 1, on a piece of the support domain, Ω1 and slow nonlinear, m(x) > 1, in its complement, Ωm := Ω \ Ω̄1.
Delgado Delgado, Manuel   +2 more
openaire   +3 more sources

Partially Linear Models under Data Combination

open access: yesReview of Economic Studies, 2022
Abstract We study partially linear models when the outcome of interest and some of the covariates are observed in two different datasets that cannot be linked. This type of data combination problem arises very frequently in empirical microeconomics.
D'Haultfoeuille, Xavier   +2 more
openaire   +4 more sources

Utilization of a Pseudo-Stochastic Model of Terrain in Simulation of Vibrations and Snubbing in Road Means of Transport

open access: yesCommunications, 2003
Physical and geometrical properties of environment lead to mathematical models of terrain- vehicle interaction. The basic idea of the presented approach is to construct a two - dimensional function whose three-dimensional graph has properties similar to ...
Blahoslav Harman, Viktor Ferencey
doaj   +1 more source

Geodiversity assessment with global and local spatial multicriteria analysis

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
The paper reports on geodiversity assessments of three national parks in Poland, performed independently by experts and volunteers. Each national park selected for the study represents one of three morphogenetically different landscape types: mountains ...
Alicja Najwer   +3 more
doaj   +1 more source

Linear combinations of composition operators on H ∞ $H^{\infty }$ spaces over the unit ball and polydisk

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we characterize completely the compactness of linear combinations of composition operators acting on the space H ∞ ( B N ) $H^{\infty }(\mathbb{B}_{N})$ of bounded holomorphic functions over the unit ball B N $\mathbb{B}_{N}$ from two ...
Xingxing Yao
doaj   +1 more source

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