Results 41 to 50 of about 5,354,987 (306)

Isogeometric topology optimization based on energy penalization for symmetric structure

Frontiers of Mechanical Engineering, 2020
We present an energy penalization method for isogeometric topology optimization using moving morphable components (ITO-MMC), propose an ITO-MMC with an additional bilateral or periodic symmetric constraint for symmetric structures, and then extend the ...
Xianda Xie, Shuting Wang, Ming Ye, Z. Xia, Wei Zhao, Ning Jiang, Manman Xu   +6 more
semanticscholar   +1 more source

Separability of diagonal symmetric states: a quadratic conic optimization problem [PDF]

Quantum, 2017
We study the separability problem in mixtures of Dicke states i.e., the separability of the so-called Diagonal Symmetric (DS) states. First, we show that separability in the case of DS in $C^d\otimes C^d$ (symmetric qudits) can be reformulated as a ...
Jordi Tura i Brugués, A. Aloy, R. Quesada, M. Lewenstein, A. Sanpera   +4 more
semanticscholar   +1 more source

Broken Symmetries in the Entanglement of Formation [PDF]

, 2002
We compare some recent computations of the entanglement of formation in quantum information theory and of the entropy of a subalgebra in quantum ergodic theory. Both notions require optimization over decompositions of quantum states.
Benatti, Benatti, Benatti, Bennett, Bennett, Connes, Hill, Horodecki, Levitin, Narnhofer, Terhal, Uhlmann, Wooters   +12 more
core   +4 more sources

Dataset on the effect of receiver size and acceptance half-angle on the aperture width and height of compound parabolic concentrator for low-concentrating photovoltaic applications using RSM

Data in Brief, 2021
The combined effect of design control factors on the response variables gives valuable information for geometric design optimization of the compound parabolic concentrator.
Faisal Masood, Nursyarizal Bin Mohd Nor, Perumal Nallagownden, Irraivan Elamvazuthi, Mohammad Azad Alam, Mohammad Yusuf, Mujahid Ali, Javed Akhter, Mubbashar Mehmood   +8 more
doaj   +1 more source

Algorithm Implementation and Optimization of Symmetric Matrix Eigenvalue Solution for FT-M6678 [PDF]

Jisuanji gongcheng
Currently, there is no implementation related to the symmetric matrix eigenvalue solution on China's autonomous and controllable FT-M6678 platform, and the existing mathematical calculation library on this platform cannot satisfy the requirements for ...
Li YU, Lin HAN, Youcai LUO, Jiandong SHANG
doaj   +1 more source

Exploiting symmetries in SDP-relaxations for polynomial optimization

, 2012
In this paper we study various approaches for exploiting symmetries in polynomial optimization problems within the framework of semi definite programming relaxations.
Barvinok AI, Barvinok AI, Bröcker L, Cordian Riener, Dixon JD, Henrion D, James G, Jean B. Lasserre, Lasserre JB, Lina Jansson Andrén, Serre J-P, The GAP Group, Thorsten Theobald   +12 more
core   +3 more sources

Energy and rf cavity phase symmetry enforcement in multiturn energy recovery linac models

Physical Review Accelerators and Beams, 2019
In a multipass energy recovery linac (ERL), each cavity must regain all energy expended from beam acceleration during beam deceleration, and the beam should achieve specific energy targets during each loop that returns it to the linac.
R. Koscica, N. Banerjee, G. H. Hoffstaetter, W. Lou, G. Premawardhana   +4 more
doaj   +1 more source

Optimal Timing of TV Commercials: Symmetrical Model [PDF]

SSRN Electronic Journal, 2002
In this paper I study the behavior of two TV broadcasters on a market where viewers perpetually make a decision whether to watch TV and which TV channel to watch. Both broadcasters optimally allocate time periods where their TV program is replaced by advertising.
openaire   +2 more sources

The Nesterov-Todd Direction and its Relation to Weighted Analytic Centers [PDF]

, 2003
The subject of this report concerns differential-geometric properties of the Nesterov-Todd search direction for linear optimization over symmetric cones. In particular, we investigate the rescaled asymptotics of the associated flow near the central path.
Hauser, Raphael
core   +2 more sources

Positive Definiteness of Symmetric Rank 1 (H-Version) Update for Unconstrained Optimization

مجلة بغداد للعلوم, 2022
Several attempts have been made to modify the quasi-Newton condition in order to obtain rapid convergence with complete properties (symmetric and positive definite) of the inverse of  Hessian matrix (second derivative of the objective function).
Saad Shakir Mahmood, Jaafer Hmood Eidi, Jinan Adel Jasem   +2 more
doaj   +1 more source