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Optimization of Aortic Arch Replacement: Two-Stage Approach
The Annals of Thoracic Surgery, 2007Aneurysms of the aortic arch seldom occur alone. They usually involve the ascending aorta. Occasionally, the aneurysm also involves the descending thoracic or thoracoabdominal aorta. We advocate a staged approach for repair of these extensive aortic aneurysms, with the ascending and arch generally being repaired in the first stage and the descending ...
Hazim J, Safi +6 more
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An extended Two-Stage Sequential Optimization approach: Properties and performance
European Journal of Operational Research, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pedrielli, Giulia +2 more
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A two-stage coevolution approach for constrained optimization
Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2017In this paper, a coevolution approach with two stages is proposed for constrained optimization problems (COPs). At the first stage, the approach enters the feasible region rapidly by utilizing the feasibility rule with incorporation of objective function information (FROFI), which is an effective method for the balance between constraints and objective
Jing-Yu Ji, Wei-Jie Yu, Jun Zhang
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A Two-Stage Approach for Optimizing Simulation Experiments
CIRP Annals, 1993Summary Simulation experiments involve many parameters (factors) not all of which significantly effect system performance. This paper proposes the application of Taguchi method prior to optimization, to reduce the number of experiments using orthogonal array design, and to determine the significant factors though sensitivity analysis.
N.C. Ho +3 more
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Optimal multi-level thresholding using a two-stage Otsu optimization approach
Pattern Recognition Letters, 2009Otsu's method of image segmentation selects an optimum threshold by maximizing the between-class variance in a gray image. However, this method becomes very time-consuming when extended to a multi-level threshold problem due to the fact that a large number of iterations are required for computing the cumulative probability and the mean of a class.
Deng-Yuan Huang, Chia-Hung Wang
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A two-stage approach for VMAT treatment plan optimization
2013 IEEE International Conference on Automation Science and Engineering (CASE), 2013In this paper we study the optimization problem for the radiation treatment planning of Volumetric-Modulated Arc Therapy (VMAT). Considering dose rate and MLC leafs as decision variables, we formulate the problem as nonlinear integer programming problem, which is very difficult to solve. A two-stage approach is proposed to tackle it, where in the first
Bofei Sun +3 more
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Two-stage H ∞ optimization approach to multirate controller design
International Journal of Control, Automation and Systems, 2012A two-stage H ∞ optimization methodology is presented for designing multirate controllers achieving comparable H ∞ closed-loop performance with that of an optimal fast rate design at a reduced real-time computational load.
Sergio López-López +2 more
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A two-stage optimization approach for sulphur emission regulation compliance
Maritime Policy & Management, 2016ABSTRACTIn this paper, we present a two-stage optimization model for the machinery system selection problem. The objective is to minimize total cost, while aggregated power requirement and emission regulations are constraining the problem. Future fuel prices are considered to be uncertain.
Øyvind Patricksson, Stein Ove Erikstad
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Saddle point approximation approaches for two-stage robust optimization problems
Journal of Global Optimization, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ning Zhang, Chang Fang
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System approach in optimal management problems for two-stage technological lines
Collection of Research Papers of the National Mining University, 2022Purpose of work is to research and design process optimization and optimal operational management for a two-stage technological line. Methodology. To achieve the goal, we apply a comprehensive approach, which consists of the formalization and analysis of operational management tasks and technological lines designing.The methods of probability theory ...
I Novitskyi, V Sliesariev, Y Shevchenko
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