Results 21 to 30 of about 294,434 (267)

Nonnegative Combined Matrices

open access: yesJournal of Applied Mathematics, 2014
The combined matrix of a nonsingular real matrix A is the Hadamard (entrywise) product A∘A-1T. It is well known that row (column) sums of combined matrices are constant and equal to one. Recently, some results on combined matrices of different classes of
Rafael Bru   +3 more
doaj   +1 more source

As regiões montanhosas e o planejamento de suas paisagens: proposta de zoneamento ambiental para a Mantiqueira meridional mineira

open access: yesConfins, 2018
In the tropical Atlantic domain the most intense interpenetration between zonal and azonal elements occur in the mountainous landscapes defining its structure and functionality with regional geosystems which mix forestry belts over loamy and well ...
Roberto Marques Neto
doaj   +1 more source

The fuzzification of mathematical matrix in the environmental impact assessment of steel industry, Ghayen, Iran [PDF]

open access: yesComputational Ecology and Software, 2020
Ghayenat steel complex is located in South Khorasan province near the Nimbolook city. In this research, the interactions between basic and supplementary criteria are evaluated using a mathematical matrix.
J. Dawoudian, Sr. Ahmadizadeh
doaj  

Bounds for the zeros of unilateral octonionic polynomials

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
In the present work it is proved that the zeros of a unilateral octonionic polynomial belong to the conjugacy classes of the latent roots of an appropriate lambda-matrix.
Serôdio Rogério   +2 more
doaj   +1 more source

Odd and even Lidstone-type polynomial sequences. Part 1: basic topics

open access: yesAdvances in Difference Equations, 2018
Two new general classes of polynomial sequences called respectively odd and even Lidstone-type polynomials are considered. These classes include classic Lidstone polynomials of first and second kind.
F. A. Costabile   +3 more
doaj   +1 more source

Teaching Improvement Model Designed with DEA Method and Management Matrix. [PDF]

open access: yesIAFOR Journal of Education, 2014
This study uses student evaluation of teachers to design a teaching improvement matrix based on teaching efficiency and performance by combining management matrix and data envelopment analysis.
Bernard Montoneri
doaj  

Symmetry Classification and Universality in Non-Hermitian Many-Body Quantum Chaos by the Sachdev-Ye-Kitaev Model

open access: yesPhysical Review X, 2022
Spectral correlations are a powerful tool to study the dynamics of quantum many-body systems. For Hermitian Hamiltonians, quantum chaotic motion is related to random matrix theory spectral correlations.
Antonio M. García-García   +2 more
doaj   +1 more source

The Role of Chemotherapy in Pediatric Myoepithelial Carcinoma: A Systematic Review of the Literature

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Myoepithelial carcinoma (MEC) in pediatric patients is a rare and aggressive malignancy characterized by heterogeneous morphology and variable molecular features. The optimal role of chemotherapy remains unclear. We conducted a systematic review according to PRISMA 2020 guidelines to evaluate chemotherapy in pediatric and young‐adult patients ...
Marco Salvi   +7 more
wiley   +1 more source

Supervised Collaborative Filtering Based on Ridge Alternating Least Squares and Iterative Projection Pursuit

open access: yesIEEE Access, 2017
This paper presents a supervised data imputation based on the class-dependent matrix factors, which are generated during matrix factorization. The proposed ridge alternating least squares imputation uses class information to create substituted values ...
Bo-Wei Chen, Wen Ji, Seungmin Rho, Yu Gu
doaj   +1 more source

Perbandingan Algoritma Decision Tree C4.5 Dan Naive Bayes pada Analisa Tekstur Gray Level Co-Occurrence Matrix Menggunakan Citra Wajah

open access: yesSistemasi: Jurnal Sistem Informasi, 2021
Abstrak Analisis tekstur lazim dimanfaatkan sebagai proses untuk melakukan klasifikasi dan interpretasi citra. Suatu proses klasifikasi citra berbasis analisa tekstur pada umumnya membutuhkan tahapan ekstraksi ciri, yang terdiri dari tiga macam metode ...
Hamdun Sulaiman
doaj   +1 more source

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