Rok 2019

• Reduced-cost surrogate modelling of compact microwave components by two-level kriging interpolation

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - ENGINEERING OPTIMIZATION - Rok 2019

  Full-wave electromagnetic (EM) analysis is a versatile tool for evaluating the performance of high-frequency components. Its potential drawback is its high computational cost, inhibiting the execution of EM-driven tasks requiring massive simulations. The applicability of equivalent network models is limited owing to the topological complexity of compact microstrip components because of EM cross-coupling effects. Development of...

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Rok 2018

• Gender approaches to evolutionary multi-objective optimization using pre-selection of criteria

  Publikacja

  • Z. Kowalczuk
  • T. Białaszewski

  - ENGINEERING OPTIMIZATION - Rok 2018

  A novel idea to perform evolutionary computations (ECs) for solving highly dimensional multi-objective optimization (MOO) problems is proposed. Following the general idea of evolution, it is proposed that information about gender is used to distinguish between various groups of objectives and identify the (aggregate) nature of optimality of individuals (solutions). This identification is drawn out of the fitness of individuals...

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• Multi-objective design optimization of antenna structures using sequential domain patching with automated patch size deter-mination

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - ENGINEERING OPTIMIZATION - Rok 2018

  In this paper, a simple yet efficient and reliable technique for fully automated multi-objective design optimization of antenna structures using sequential domain patching (SDP) is discussed. The optimization procedure according to SDP is a two-step process: (i) obtaining the initial set of Pareto-optimal designs representing the best possible trade-offs between considered conflicting objectives, and (ii) Pareto set refinement...

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Rok 2016

• Arterial cannula shape optimization by means of the rotational firefly algorithm

  Publikacja

  • K. Tesch
  • K. Kaczorowska-Ditrich

  - ENGINEERING OPTIMIZATION - Rok 2016

  The article presents global optimization results of arterial cannula shapes by means of the newly modified firefly algorithm. The search for the optimal arterial cannula shape is necessary in order to minimize losses and prepare the flow that leaves the circulatory support system of a ventricle (i.e. blood pump) before it reaches the heart. A modification of the standard firefly algorithm, the so-called rotational firefly algorithm,...

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• Fast surrogate-assisted simulation-driven design of compact microwave hybrid couplers

  Publikacja

  • P. Kurgan
  • S. Kozieł

  - ENGINEERING OPTIMIZATION - Rok 2016

  This work presents a robust methodology for expedited simulation-driven design optimization of compact microwave hybrid couplers. The technique relies on problem decomposition, and a bot-tom–up design strategy, starting from the level of basic building blocks of the coupler, and finishing with a tuning procedure that exploits a fast surrogate model of the entire structure. The latter is constructed by cascading local response surface...

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• Scalability of surrogate-assisted multi-objective optimization of antenna structures exploiting variable-fidelity electromagnetic simulation models

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - ENGINEERING OPTIMIZATION - Rok 2016

  Multi-objective optimization of antenna structures is a challenging task due to high-computational cost of evaluating the design objectives as well as large number of adjustable parameters. Design speedup can be achieved by means of surrogate-based optimization techniques. In particular, a combination of variable-fidelity electromagnetic (EM) simulations, design space reduction techniques, response surface approximation (RSA) models,...

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• Surrogate Modeling and Optimization Using Shape-Preserving Response Prediction: A Review

  Publikacja

  • L. Leifsson
  • S. Kozieł

  - ENGINEERING OPTIMIZATION - Rok 2016

  Computer simulation models are ubiquitous in modern engineering design. In many cases, they are the only way to evaluate a given design with sufficient fidelity. Unfortunately, an added computa-tional expense is associated with higher fidelity models. Moreover, the systems being considered are often highly nonlinear and may feature a large number of designable parameters. Therefore, it may be impractical to solve the design problem...

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Rok 2009

• Determining heat transfer coefficients using evolutionary alogrithms

  Publikacja

  • K. Tesch
  • M. Atherton
  • T. Karayiannis
  • M. Collins
  • P. Edwards

  - ENGINEERING OPTIMIZATION - Rok 2009

  Pokazano sposób kalibracji współczynnika wymiany ciepła za pomocą algorytmów ewolucyjnych. Wykorzystano tu minimalizację błędu między pomiarami a obliczeniami. Pokazano dwie metody optymalizacji: wielokryterialną i jednokryterialną.