Results 21 to 30 of about 194,984,202 (237)

Confined Compressibility of Fine-Grained Marine Sediments with Cavities after Complete Dissociation of Noduled Natural Gas Hydrates

open access: yesJournal of Marine Science and Engineering
Due to natural and anthropogenic disturbances, natural gas hydrates with morphologies of nodules and chunks dissociate and release massive free gas, creating large cavities within fine-grained marine sediments.
Lei Yang   +7 more
doaj   +1 more source

%HPGLIMMIX: A High-Performance SAS Macro for GLMM Estimation

open access: yesJournal of Statistical Software, 2014
Generalized linear mixed models (GLMMs) comprise a class of widely used statistical tools for data analysis with fixed and random effects when the response variable has a conditional distribution in the exponential family.
Liang Xie, Laurence V. Madden
doaj   +1 more source

ON THE MEAN AND DISPERSION OF THE MOORE-PENROSE GENERALIZED INVERSE OF A WISHART MATRIX [PDF]

open access: yes, 2020
The Moore-Penrose inverse of a singular Wishart matrix is studied. When the scale matrix equals the identity matrix the mean and dispersion matrices of the Moore-Penrose inverse are known. When the scale matrix has an arbitrary structure no exact results
von Rosen, Dietrich   +5 more
core   +1 more source

A one parameter method for the matrix inverse square root [PDF]

open access: yes, 1955
summary:This paper is motivated by the paper [3], where an iterative method for the computation of a matrix inverse square root was considered. We suggest a generalization of the method in [3].
Lakić, Slobodan   +3 more
core   +1 more source

Multivariate Spatial Autoregressive Model with Latent Variables: Application to Economic Growth Modeling [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences
Research involving causal relationships among latent variables that generally use structural equation modeling (SEM) analysis and spatial data simultaneously has an unavoidable impact on using spatial SEM analysis.
Anik Anekawati , Purhadi, Mohammad Rofik
doaj   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Properties of the inverse of a noncentral Wishart matrix [PDF]

open access: yes, 2021
The inverse of a non-central Wishart matrix occurs in a variety of contexts inmultivariate statistical work, including instrumental variables (IV) regression, but there has been very little work on its properties.
Hillier, Grant   +3 more
core   +1 more source

LOGIC WITH EXCEPTION ON THE ALGEBRA OF FOURIER-DUAL OPERATIONS: NEURAL NET MECHANISM OF COGNITIVE DISSONANCE REDUCING [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2014
A mechanism of cognitive dissonance reducing is demonstrated with approach for non-monotonic fuzzy-valued logics by Fourier-holography technique implementation developing. Cognitive dissonance occurs under perceiving of new information that contradicts
A. V. Pavlov
doaj  

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Computing Generalized Inverse Systems using Matrix Pencil Methods [PDF]

open access: yes, 2001
We address the numerically reliable computation of generalized inverses of rational matrices in descriptor state-space representation. We put particular emphasis on two classes of inverses: the weak generalized inverse and the Moore-Penrose pseudoinverse.
Varga, A., Varga, Andras
core   +1 more source

Home - About - Disclaimer - Privacy