Results 41 to 50 of about 429,972 (288)
Symmetric Constrained Optimal Control
IFAC-PapersOnLine, 2015 Abstract This paper extends previous results on symmetry in strictly convex linear model predictive control to non-strictly convex and nonlinear model predictive control. We define symmetry for constrained systems, controllers, and model predictive control problems.
Claus Danielson, Francesco Borrelli
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Advances in Mechanical Engineering, 2017 An improved particle swarm optimization method that has better equilibrium characteristic between global search and local search is proposed for parameter identification of hysteresis nonlinear dynamic model for piezoelectric positioning system.
Yu Xie, Jing-Li Fu, Ben-Yong Chen
doaj +1 more source
Efficient description of strongly correlated electrons with mean-field cost [PDF]
, 2014 We present an efficient approach to the electron correlation problem that is well-suited for strongly interacting many-body systems, but requires only mean-field-like computational cost. %which is based on orbital optimization of electron pairs.
Ayers, Paul W. +5 more
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Optimal Angular Resolution for Face-Symmetric Drawings
Journal of Graph Algorithms and Applications, 2011 Let G be a graph that may be drawn in the plane in such a way that all internal faces are centrally symmetric convex polygons. We show how to find a drawing of this type that maximizes the angular resolution of the drawing, the minimum angle between any two incident edges, in polynomial time, by reducing the problem to one of finding parametric ...
David Eppstein, Kevin A. Wortman
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Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
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A New Construction of Optimal Symmetrical ZCCS
2024 IEEE International Symposium on Information Theory (ISIT)This paper has been accepted in 'IEEE International Symposium on Information Theory (ISIT 2024)'
Rajen Kumar +2 more
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pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
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APL Materials, 2022 This paper presents a scheme to achieve a broadband metamaterial absorber in the terahertz region, which is consisted of an anti-symmetric T-shaped resonator (formed by two mutually perpendicular metallic strips) on top of a metallic back layer separated
Ben-Xin Wang +3 more
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Approximation of sequences of symmetric matrices with the symmetric rank-one algorithm and applications [PDF]
, 2013 The symmetric rank-one update method is well-known in optimization for its applications in the quasi-Newton algorithm. In particular, Conn, Gould, and Toint proved in 1991 that the matrix sequence resulting from this method approximates the Hessian of ...
Arguillere, Sylvain
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All Real Eigenvalues of Symmetric Tensors
, 2014 This paper studies how to compute all real eigenvalues of a symmetric tensor. As is well known, the largest or smallest eigenvalue can be found by solving a polynomial optimization problem, while the other middle eigenvalues can not.
Cui, Chun-Feng +2 more
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