Results 11 to 20 of about 154,776 (154)

Learning-Aided Optimal Power Flow Based Fast Total Transfer Capability Calculation

Energies, 2022
Total transfer capability (TTC) is a vital security indicator for power exchange among areas. It characterizes time-variants and transient stability dynamics, and thus is challenging to evaluate efficiently, which can jeopardize operational safety.
Ji’ang Liu, Youbo Liu, Gao Qiu, Xiao Shao   +3 more
doaj   +1 more source

A cell-based smoothed finite element method for kinematic limit analysis [PDF]

, 2010
This paper presents a new numerical procedure for kinematic limit analysis problems, which incorporates the cell-based smoothed finite element method with second-order cone programming.
Anderheggen, Andersen, Andersen, Andersen, Andersen, Belytschko, Belytschko, Belytschko, Bordas, Bottero, Capsoni, Chaaba, Chen, Chen, Chen, Chen, Christiansen, Christiansen, Ciria, Dai, Flanagan, Gaydon, Gross-Weege, Huh, Huh, Jiang, Krabbenhoft, Le, Le, Le, Le, Liu, Liu, Liu, Liu, Liu, Liu, Lyamin, Makrodimopoulos, Makrodimopoulos, Munoz, Nagtegaal, Nguyen, Nguyen-Thanh, Nguyen-Thoi, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Nguyen-Xuan, Prandtl, Sloan, Smith, Sze, Tin-Loi, Vicente da Silva, Wang, Yoo, Zouain, Zouain   +59 more
core   +1 more source

Memory-Based Evolutionary Algorithms for Nonlinear and Stochastic Programming Problems

Mathematics, 2019
In this paper, we target the problems of finding a global minimum of nonlinear and stochastic programming problems. To solve this type of problem, we propose new approaches based on combining direct search methods with Evolution Strategies (ESs) and ...
Abdel-Rahman Hedar, Amira A. Allam, Wael Deabes   +2 more
doaj   +1 more source

Optimization of Dengue Epidemics: a test case with different discretization schemes [PDF]

, 2009
The incidence of Dengue epidemiologic disease has grown in recent decades. In this paper an application of optimal control in Dengue epidemics is presented.
Ch. Tsitouras, Delfim F. M. Torres, George Psihoyios, Helena Sofia Rodrigues, M. Teresa T. Monteiro, Theodore E. Simos   +5 more
core   +2 more sources

Inverse methods and integral-differential model demonstration for optimal mechanical operation of power plants – numerical graphical optimization for second generation of tribology models

Electrical, Control and Communication Engineering, 2018
Stepping forward from a previous conference contribution, the article focuses on extension of inverse problem algorithms to integral-differential modelling and formal/strict demonstration of graphical-optimization method.
Casesnoves Francisco
doaj   +1 more source

Learning to steer nonlinear interior-point methods

EURO Journal on Computational Optimization, 2019
Interior-point or barrier methods handle nonlinear programs by sequentially solving barrier subprograms with a decreasing sequence of barrier parameters.
Renke Kuhlmann
doaj   +1 more source

Vectorized MATLAB Implementation of the Incremental Minimization Principle for Rate-Independent Dissipative Solids Using FEM: A Constitutive Model of Shape Memory Alloys

Mathematics, 2022
The incremental energy minimization principle provides a compact variational formulation for evolutionary boundary problems based on constitutive models of rate-independent dissipative solids.
Miroslav Frost, Jan Valdman
doaj   +1 more source

A Novel Reduced-Order Analytical Fault Diagnosis Model for Power Grid

IEEE Access
Power grid fault diagnosis methods based on analytical models possess advantages such as logical rigor, strong interpretability, and high applicability.
Zhuonan Lin, Yongxing Wang, Haoqian Xu, Fanrong Wei   +3 more
doaj   +1 more source

APPROXIMATE OPTIMAL CONTROL OF LINEAR TIME-DELAY SYSTEMS VIA HAAR WAVELETS [PDF]

Journal of Engineering Science and Technology, 2016
In this paper, Haar wavelet benefits are applied to the optimal control of linear time-delay systems. A discretized form of optimal control problem at collocation points based on some useful properties of Haar wavelets transforms original problem into a ...
AKBAR H. BORZABADI, SOLAYMAN ASADI
doaj  

A Comparison of the Embedding Method to Multi-Parametric Programming, Mixed-Integer Programming, Gradient-Descent, and Hybrid Minimum Principle Based Methods

, 2013
In recent years, the embedding approach for solving switched optimal control problems has been developed in a series of papers. However, the embedding approach, which advantageously converts the hybrid optimal control problem to a classical nonlinear ...
DeCarlo, Raymond A., Meyer, Richard, Žefran, Miloš   +2 more
core   +1 more source