Results 41 to 50 of about 111,305 (313)

On global minimizers of quadratic functions with cubic regularization [PDF]

, 2018
In this paper, we analyze some theoretical properties of the problem of minimizing a quadratic function with a cubic regularization term, arising in many methods for unconstrained and constrained optimization that have been proposed in the last years ...
Cristofari, Andrea, Lucidi, Stefano, Niri, Tayebeh Dehghan   +2 more
core   +2 more sources

An Improved Adaptive Trust-Region Method for Unconstrained Optimization

Mathematical Modelling and Analysis, 2014
In this study, we propose a trust-region-based procedure to solve unconstrained optimization problems that take advantage of the nonmonotone technique to introduce an efficient adaptive radius strategy.
Hamid Esmaeili, Morteza Kimiaei
doaj   +1 more source

Designing an Anionic Layer in Low‐Concentration Electrolytes to Promote In‐Plane Ion Diffusion for Dendrite‐Free Zinc‐Ion Batteries

Advanced Materials, EarlyView.
An optimization model for zinc anodes centered on anion traction in a low‐concentration electrolyte system is proposed. The fluoride‐ion enriched interfacial layer on the zinc anode surface enhances the concentration of Zn2+ in a lateral direction through electrostatic forces, thereby facilitating horizontal zinc plating.
Yiyang Zhang, Beibei Xu, Lingfei Zhao, Qi Luo, Ying Tao, Yaojie Lei, Wei‐Hong Lai, Hua‐Kun Liu, Shi‐Xue Dou, Yun‐Xiao Wang   +9 more
wiley   +1 more source

Drastic Mechanochromic Luminescence Through Fluorescence–Phosphorescence Switching in a Heavy‐Atom‐Free Organoboron Compound

Advanced Optical Materials, EarlyView.
A new heavy‐atom‐free, donor–acceptor‐type organoboron luminophore has been synthesized, which exhibits red room‐temperature phosphorescence (RTP) in the crystalline state. Furthermore, the amorphous solid generated by grinding shows green thermally activated delayed fluorescence (TADF), displaying distinct mechanochromic luminescence (MCL) through ...
Yohei Adachi, Maho Kurihara, Shota Hosoya, Shota Terao, Masashi Nakamura, Yuichi Kitagawa, Yasuchika Hasegawa, Joji Ohshita   +7 more
wiley   +1 more source

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

International Journal of Satellite Communications and Networking, EarlyView., 2023
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak, Daniel Gaetano Riviello, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +3 more
wiley   +1 more source

Speedup of high-order unconstrained binary optimization using quantum $${{\mathbb{Z}}}_{2}$$ Z 2 lattice gauge theory

Communications Physics
An important and difficult problem in optimization is the high-order unconstrained binary optimization, which can represent many optimization problems more efficiently than quadratic unconstrained binary optimization, but how to quickly solve it has ...
Bi-Ying Wang, Xiaopeng Cui, Qingguo Zeng, Yemin Zhan, Man-Hong Yung, Yu Shi   +5 more
doaj   +1 more source

The Hybrid BFGS-CG Method in Solving Unconstrained Optimization Problems

Abstract and Applied Analysis, 2014
In solving large scale problems, the quasi-Newton method is known as the most efficient method in solving unconstrained optimization problems. Hence, a new hybrid method, known as the BFGS-CG method, has been created based on these properties, combining ...
Mohd Asrul Hery Ibrahim, Mustafa Mamat, Wah June Leong   +2 more
doaj   +1 more source

Conditions for State and Control Constraint Activation in Coordination of Connected and Automated Vehicles

, 2020
Connected and automated vehicles (CAVs) provide the most intriguing opportunity to reduce pollution, energy consumption, and travel delays. In earlier work, we addressed the optimal coordination of CAVs using Hamiltonian analysis.
Mahbub, A M Ishtiaque, Malikopoulos, Andreas A.   +1 more
core   +1 more source

A Linesearch Algorithm with Memory for Unconstrained Optimization [PDF]

, 1998
This paper considers algorithms for unconstrained nonlinear optimization where the model used by the algorithm to represent the objective function explicitly includes memory of the past iterations. This is intended to make the algorithm less “myopic” in the sense that its behaviour is not completely dominated by the local nature of the objective ...
GOULD N., LUCIDI, Stefano, ROMA, Massimo, TOINT P.   +3 more
openaire   +4 more sources

Trustworthy Inverse Molecular Design via Alignment with Molecular Dynamics

Advanced Science, EarlyView.
Data‐driven inverse molecular design (IMD) is a promising approach to discovering new molecules with desired properties. Despite the remarkable progress, existing IMD methods lag behind in terms of trustworthiness, as indicated by their misalignment with the ground‐truth function that models the molecular dynamics.
Kevin Tirta Wijaya, Navid Ansari, Hans‐Peter Seidel, Vahid Babaei   +3 more
wiley   +1 more source