Results 111 to 120 of about 5,774,152 (370)
Intelligent optimization based density matrix reconstruction method with semi-positive constraint
Results in Physics, 2023 Quantum state tomography (QST) is a technique used to reconstruct the density matrix of unknown quantum states based on experimentally obtained measurements. QST is a fundamental tool in the field of quantum information and quantum technology.
Xiaomin Meng +3 more
doaj
Equivalent definitions of positive definiteness [PDF]
Pacific Journal of Mathematics, 1984 Maserick, P. H., Szafraniec, F. H.
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Advanced Science, EarlyView.This study identifies PRMT3‐mediated H4R3me2a as a critical driver of tau hyperphosphorylation in primary age‐related tauopathy. Mechanistic insights reveal that the PRMT3/H4R3me2a/miR‐448 axis suppresses IGF1R expression via epigenetic regulation, further dysregulating the PI3K/AKT/GSK3β pathway.
Haotian Liu +9 more
wiley +1 more source
On the Uniform Positive Definiteness of the Estimated Inertia for Robot Manipulators
, 2011 This paper is dedicated to seeking a projection algorithm that can guarantee the uniform positive definiteness of the manipulator estimated inertia during parameter adaptation. To achieve this objective, we first investigate the convexity property of the
H. Wang, Yongchun Xie
semanticscholar +1 more source
Materials Selection Principles for Designing Electro‐Thermal Neurons
Advanced Electronic Materials, EarlyView.Materials property – performance relations are established for new and old electrical materials leveraged as electro‐thermal oscillators emulating neuron dynamics. Robust, reconfigurable, high frequency, low power characteristics are explicitly tied to highly nonlinear electrical transport, small specific heat, and greater electrical than thermal ...
Fatme Jardali +6 more
wiley +1 more source
p-Norm SDD tensors and eigenvalue localization
Journal of Inequalities and Applications, 2016 We present a new class of nonsingular tensors (p-norm strictly diagonally dominant tensors), which is a subclass of strong H $\mathcal{H}$ -tensors.
Qilong Liu, Yaotang Li
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Positive definite collections of disks [PDF]
Indiana University Mathematics Journal, 2006 Let $Q(z,w)=-\prod_{k=1}^n [(z-a_k)(\bar{w}-\bar{a}_k)-R_k^2]$. M. Putinar and B. Gustafsson proved recently that the matrix $Q(a_i,a_j)$, $1\leq i,j\leq n$, is positive definite if disks $|z-a_i|
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Advanced Electronic Materials, EarlyView.A 3‐terminal SOT‐MRAM device that integrates the topological insulator and the perpendicular magnetic tunnel junction. The double magnetic layers with different saturation magnetizations are employed as the recording layer of TIs‐pMTJ. By breaking the chiral symmetry of these states via the interlayer DMI, the field‐free deterministic SOT switching is ...
Xu Zhang +18 more
wiley +1 more source
Positive Definite Norm Dependent Matrices In Stochastic Modeling
Demonstratio Mathematica, 2014 Positive definite norm dependent matrices are of interest in stochastic modeling of distance/norm dependent phenomena in nature. An example is the application of geostatistics in geographic information systems or mathematical analysis of varied spatial ...
Kuniewski Sebastian P. +1 more
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Electronic Nanomaterials for Plants: A Review on Current Advances and Future Prospects
Advanced Electronic Materials, EarlyView.Global food security faces mounting challenges from climate change and rapid population growth. This review highlights the pivotal role of electronic nanomaterials–including metals, metal oxides, and carbon‐based structures–in enhancing plant photosynthesis, nutrient uptake, and stress resilience. Furthermore, it explores how emerging platforms such as
Ciro Allará +8 more
wiley +1 more source