Results 1 to 10 of about 29,372 (246)

Forward Order Law for the Reflexive Inner Inverse of Multiple Matrix Products

open access: yesAxioms, 2022
The generalized inverse has numerous important applications in aspects of the theoretic research of matrices and statistics. One of the core problems of generalized inverse is finding the necessary and sufficient conditions for the reverse (or the forward) order laws for the generalized inverse of matrix products.
Zhiping Xiong   +2 more
exaly   +3 more sources

Randomized Block Kaczmarz Methods for Inner Inverses of a Matrix

open access: yesMathematics
In this paper, two randomized block Kaczmarz methods to compute inner inverses of any rectangular matrix A are presented. These are iterative methods without matrix multiplications and their convergence is proved. The numerical results show that the proposed methods are more efficient than iterative methods involving matrix multiplications for the high-
Lili Xing, Wendi Bao, Weiguo Li
exaly   +3 more sources

Aplikasi Pencarian Hadis Menggunakan Vector Space Model Dengan Pembobotan TF-IDF Dan Confix-Stripping Stemmer

open access: yesJurnal Teknologi Informasi dan Ilmu Komputer, 2023
Hadis adalah sumber ajaran Islam kedua setelah al-Qur’an. Kedudukannya yakni setelah Al-Qur’an, sebelum Ijma’ dan Qiyas. Saat ini hadis sudah dapat diakses melalui berbagai platform digital, tetapi fitur pencarian yang disediakan masih sebatas data ...
Novi Prisma Yunita
doaj   +3 more sources

Hypersurfaces in the general inner product spaces [PDF]

open access: yesJournal of Hyperstructures, 2017
Let A be a symmetric positive definite (n+ 1)×(n+ 1) real matrix for n ≥ 1 and S ∈ R n+1 be a hypersurface. We are supposed to determine the tangent space TpS in an arbitrary point p ∈ S in the case that the whole space R n+1 admits the inner product ...
Ali Parsian
doaj   +1 more source

Production Performance Analysis for Deviated Wells in Carbonate Gas Reservoirs With Multiple Heterogeneous layers

open access: yesFrontiers in Energy Research, 2022
Deviated wells are used to improve the performance of carbonate reservoirs with multiple heterogeneous layers and penetrate the “sweet spot” of each layer, which is full of fractures and vugs.
Jianlin Guo   +4 more
doaj   +1 more source

Planetary radar science case for EISCAT 3D [PDF]

open access: yesAnnales Geophysicae, 2021
Ground-based inverse synthetic aperture radar is a tool that can provide insights into the early history and formative processes of planetary bodies in the inner solar system.
T. Tveito   +3 more
doaj   +1 more source

Force Control Improvement in Collaborative Robots through Theory Analysis and Experimental Endorsement

open access: yesApplied Sciences, 2020
Due to the elasticity of their joints, collaborative robots are seldom used in applications with force control. Besides, the industrial robot controllers are closed and do not allow the user to access the motor torques and other parameters, hindering the
Rodrigo Pérez-Ubeda   +2 more
doaj   +1 more source

Alginate Core–Shell Capsules for 3D Cultivation of Adipose-Derived Mesenchymal Stem Cells

open access: yesBioengineering, 2022
Mesenchymal stem cells (MSCs) are primary candidates in tissue engineering and stem cell therapies due to their intriguing regenerative and immunomodulatory potential. Their ability to self-assemble into three-dimensional (3D) aggregates further improves
Sabrina Nebel   +7 more
doaj   +1 more source

Computing the smallest singular triplets of a large matrix

open access: yesResults in Applied Mathematics, 2019
In this paper we present a new type of restarted Krylov methods for calculating the smallest singular triplets of a large sparse matrix, A. The new framework avoids the Lanczos bidiagonalization process and the use of polynomial filtering.
Achiya Dax
doaj   +1 more source

Paradigms in HIV vaccine research

open access: yesExploration of Immunology, 2022
Although a large number of preventative human immunodeficiency virus (HIV) vaccine trials have been carried out during the last 30 years, it is remarkable that an effective HIV vaccine has not yet been developed.
Marc H.V. Van Regenmortel
doaj   +1 more source

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