Results 31 to 40 of about 3,036 (205)
Improving Lagrange Dual Bounds for Quadratic Extremal Problems
Кібернетика та комп'ютерні технології, 2020 Introduction. Due to the fact that quadratic extremal problems are generally NP-hard, various convex relaxations to find bounds for their global extrema are used: Lagrangian relaxation, SDP-relaxation, SOCP-relaxation, LP-relaxation, and others.
Oleg Berezovskyi
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Research on Hub Arc Location Problem with Unfixed Discounts in Hub-and-spoke Network Design [PDF]
Jisuanji gongcheng, 2017 Previous researches on Hub Arc Location Problem(HALP) mostly adopt hub arcs with fixed discounts which cannot effectively deal with the situation that flows on hub arcs in the hub-and-spoke network have large differences.Therefore,this paper proposes a ...
CHEN Xiaoxin,XU Yun,LIU Xiangbin
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IEEE Open Journal of the Communications SocietyQuantum computing is commonly considered one highly efficient computing method with the potential to revolutionize computation technology and solve problems that are currently unsolvable.
Wenlu Xuan +3 more
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A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws
Advanced Intelligent Discovery, EarlyView.The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows +7 more
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Augmented Lagrangian Algorithm for Hydrothermal Scheduling
EAI Endorsed Transactions on Energy Web, 2018 This paper mainly deals with a new algorithm for solving hydrothermal scheduling problem with transmission and environmental constraints using Augmented Lagrangian(AL) method.
R. Subramani, C. Vijayalakshmi
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Accounting for animal health in efficiency analysis: An application to Swedish dairy farms
American Journal of Agricultural Economics, EarlyView.Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang +3 more
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Review of CFD modelling techniques for single‐phase and multiphase flow in static mixers
The Canadian Journal of Chemical Engineering, EarlyView.This review synthesizes computational fluid dynamics (CFD) approaches for static mixers, linking hydrodynamics to pressure drop, particle/droplet distributions, mixing metrics, and heat‐transfer performance to guide modelling choices and design decisions. Abstract Static mixers enable compact and low‐energy intensification.
Jussan Jaeger +7 more
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A Geometric Characterization of Steady Laminar Flow
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT We study the steady states of the Euler equations on the periodic channel or annulus. We show that if these flows are laminar (layered by closed non‐contractible streamlines which foliate the domain), then they must be either parallel or circular flows.
Theodore D. Drivas, Marc Nualart
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Energy Science &Engineering, EarlyView.The low‐field nuclear magnetic resonance (NMR) measurements are applied to investigate the seepage characteristics of the single rough joint. The purpose of this paper is to investigate the seepage characteristics of granite specimens with single‐joint channel under the different roughness, confining pressures and seepage pressures.
Hao Cheng, Xiujie Zhong
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A Memetic Lagrangian Heuristic for the 0-1 Multidimensional Knapsack Problem
Discrete Dynamics in Nature and Society, 2013 We present a new evolutionary algorithm to solve the 0-1 multidimensional knapsack problem. We tackle the problem using duality concept, differently from traditional approaches. Our method is based on Lagrangian relaxation.
Yourim Yoon, Yong-Hyuk Kim
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