Search results for: computation

• Synthesis, spectroscopy and computational studies of some novelphosphorylated derivatives of quinoline-5,8-diones

  Publication

  • J. Nycz
  • G. Malecki
  • Ł. Ponikiewski
  • M. Leboschka
  • M. Nowak
  • J. Kusz

  - JOURNAL OF MOLECULAR STRUCTURE - Year 2011

  The neutral phosphorus nucleophiles such as R2P(=Y)M allowed the radical addition to 2-methyl-5,8-dioxo-5,8-dihydroquinoline-7-amine and N-(2-methyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide giving exclusively O-phosphorylated products. All products were quantitatively prepared and characterized by microanalysis, and multinuclear NMR spectroscopy. Seven of them, have been characterized by single crystal X-ray diffraction method....

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• Consensus models: Computational complexity aspects in modern approaches to the list coloring problem

  Publication

  • D. Bogdanowicz
  • K. Giaro
  • R. Janczewski

  - THEORETICAL COMPUTER SCIENCE - Year 2011

  Artykuł poświęcony jest nowym modelom konsensusowego kolorowania grafów. Artykuł zawiera omówienie trzech takich modeli, analizę ich złożoności obliczeniowej oraz wielomianowy algorytm dla częściowych k-drzew, dla tzw. modelu addytywnego.

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• Molecular dynamics and verisimilitude - to what extent can one trust a computational simulation?

  Publication

  • A. Miszkiel
  • M. Wojciechowski
  • S. Milewski

  - Year 2012

  For the last several tens of years, computer simulations have become of undeniable importance. Molecular Dynamics (MD) simulation techniques are used to examine the phenomena which occur at the level that cannot be observed directly. Thus, they can be successfully exploited in many different scientific fields such as: materials science, applied mathematics and theoretical physics, biochemistry, biophysics or drug design. Despite...

• On the Structure of Time in Computational Semantics of a Variable-Step Solver for Hybrid Behavior Analysis

  Publication

  • J. Zander
  • P. J. Mosterman
  • G. Hamon
  • B. Denckla

  - Year 2011

  Hybrid dynamic systems combine continuous and discrete behavior. Often, computational approaches are employed to derive behaviors that approximate the analytic solution. An important part of this is the approximation of differential equation behavior by numerical integration. The accuracy and computational efficiency of the integration usually depend on the complexity of the method and its implicated approximation errors, especially...

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• Experimental and Computational Analysis of the Ship Propeller in Open Water Conditions for Inclined Flow

  Publication

  • J. Felicjancik
  • P. Król
  • B. Tomasz

  - Year 2016

  The paper presents the results of computational analyses simulating the open water tests of ship propeller in inclined flow. The results of computations are compared with the results of corresponding experimental analyses carried out in the towing tank of Ship Design and Research Centre (CTO S.A.). The object of the research was the model propeller identified as CP469. The aim of the study was to validate the results of numerical...

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• Scheduling of identical jobs with bipartite incompatibility graphs on uniform machines. Computational experiments

  Publication

  • S. Duraj
  • P. Kopeć
  • M. Kubale
  • T. Pikies

  - Decision Making in Manufacturing and Services - Year 2017

  We consider the problem of scheduling unit-length jobs on three or four uniform parallel machines to minimize the schedule length or total completion time. We assume that the jobs are subject to some types of mutual exclusion constraints, modeled by a bipartite graph of a bounded degree. The edges of the graph correspond to the pairs of jobs that cannot be processed on the same machine. Although the problem is generally NP-hard,...

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• Validation Process for Computational Model of Full-Scale Segment for Design of Composite Footbridge

  Publication

  • T. Ferenc
  • T. Mikulski

  - Polish Maritime Research - Year 2020

  Experimental tests and numerical simulations of a full-scale segment of a foot and cycle bridge made of polymer composites are presented in the paper. The analysed structure is made of sandwich panels, which consist of glass fibre reinforced polymer (GFRP) multi-layered laminate faces and a PET foam (obtained from recycling) core. The dimensions of the segment cross-section are the same as for the target footbridge; however, span...

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• The computational complexity of the backbone coloring problem for bounded-degree graphs with connected backbones

  Publication

  • R. Janczewski
  • K. Turowski

  - INFORMATION PROCESSING LETTERS - Year 2015

  Given a graph G, a spanning subgraph H of G and an integer λ>=2, a λ-backbone coloring of G with backbone H is a vertex coloring of G using colors 1, 2, ..., in which the color difference between vertices adjacent in H is greater than or equal to lambda. The backbone coloring problem is to find such a coloring with maximum color that does not exceed a given limit k. In this paper, we study the backbone coloring problem for bounded-degree...

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• Gradient theories of ductile and brittle damage: a thermodynamical consistent framework and computational issues

  Publication

  • H. Stumpf
  • J. Makowski
  • J. Górski
  • K. Hackl

  - Year 2003

  Przedstawiono termodynamicznie zgodny opis gradientowych teorii plastycznego i kruchego zniszczenia. Przyjęto, że propagujące mikro-zniszczenia posiadają bezwładność i ich ruch jest wywołany przez mikro-siły, które spełniają ich własne dynamiczne równania równowagi. Poza równaniami równowagi makro- i mikro-sił sformułowano pierwsze i drugie prawo termodynamiki na poziomie mikro i mezo. Zakładając ogólną formę równań konstytutywnych...

• A proposition of the computational model for the dynamic analysis of stress and strain distribution in the hip joint

  Publication

  • S. Sobieszczyk
  • W. Wojnicz
  • B. Nowak
  • E. Wittbrodt

  - Year 2006

  Celem pracy jest sformułowanie zadania modelowania dynamiki odkształceń i rozkładu naprężeń stawu biodrowego, a w szczególności kości udowej, pod wpływem sił mięśniowych oraz zadanych sił zewnętrznych. Rozwiązanie tego zadania pozwoli wyjaśnić niektóre zjawiska np. jakie ruchy kości udowej oraz jakie materiały użyte do jej alloplastyki są przyczyną urazów i poważnych uszkodzeń. Omówiono problemy związane z zastosowaniem metody...

• Optimized Computational Intelligence Model for Estimating the Flexural Behavior of Composite Shear Walls

  Publication

  • M. Mirrashid
  • H. Naderpour
  • D. N. Kontoni
  • A. Jakubczyk-Gałczyńska
  • R. Jankowski
  • T. N. Nguyen

  - Buildings - Year 2023

  This article presents a novel approach to estimate the flexural capacity of reinforced concrete-filled composite plate shear walls using an optimized computational intelligence model. The proposed model was developed and validated based on 47 laboratory data points and the Transit Search (TS) optimization algorithm. Using 80% of the experimental dataset, the optimized model was selected by determining the unknown coefficients of...

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• Versatile Unsupervised Design of Antennas Using Flexible Parameterization and Computational Intelligence Methods

  Publication

  • S. Kozieł
  • A. Pietrenko-Dąbrowska
  • S. Szczepański

  - Scientific Reports - Year 2024

  Developing contemporary antennas is a challenging endeavor that requires considerable engineering insight. The most laborious stage is to devise an antenna architecture that delivers the required functionalities, e.g., multiband operation. Iterative by nature (hands-on topology modifications, parametric studies, trial-and-error geometry selection), it typically takes many weeks and requires considerable engagement from a human...

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• DISCRETE & COMPUTATIONAL GEOMETRY

  Journals

  ISSN: 0179-5376 , eISSN: 1432-0444

• COMPUTATIONAL & APPLIED MATHEMATICS

  Journals

  ISSN: 0101-8205 , eISSN: 1807-0302

• Journal of Computational Electronics

  Journals

  ISSN: 1569-8025 , eISSN: 1572-8137

• Computational Intelligence and Neuroscience

  Journals

  ISSN: 1687-5265 , eISSN: 1687-5273

• Journal of Computational Finance

  Journals

  ISSN: 1460-1559 , eISSN: 1755-2850

• Journal of Computational Geometry

  Journals

  ISSN: 1920-180X

• REVIEWS IN COMPUTATIONAL CHEMISTRY

  Journals

  ISSN: 1069-3599

• BIOINFO Computational Mathematics

  Journals

  ISSN: 2249-7099

• Computational Condensed Matter

  Journals

  ISSN: 2352-2143

• Advances in Computational Design

  Journals

  ISSN: 2383-8477 , eISSN: 2466-0523

• Computational Management Science

  Journals

  ISSN: 1619-697X , eISSN: 1619-6988

• Advances in Computational Research

  Journals

  ISSN: 0975-3273

• Computational Thermal Sciences

  Journals

  ISSN: 1940-2503 , eISSN: 1940-2554

• BIOINFO Computational Optimization

  Journals

  ISSN: 2249-5533

• Journal of Computational Linguistics

  Journals

  ISSN: 2249-2828

• Frontiers in Computational Neuroscience

  Journals

  ISSN: 1662-5188

• npj Computational Materials

  Journals

  ISSN: 2057-3960

• Computational Visual Media

  Journals

  ISSN: 2096-0433

• Computational Social Networks

  Journals

  eISSN: 2197-4314

• Applied and Computational Mechanics

  Journals

  ISSN: 1802-680X

• Computational Mathematics and Modeling

  Journals

  ISSN: 1046-283X

• Computational Brain and Behavior

  Journals

  eISSN: 2522-087X

• Computational and Mathematical Methods

  Journals

  eISSN: 2577-7408

• Computational and Mathematical Biophysics

  Journals

  eISSN: 2544-7297

• JOURNAL OF COMPUTATIONAL NEUROSCIENCE

  Journals

  ISSN: 0929-5313 , eISSN: 1573-6873

• Mathematical and Computational Applications

  Journals

  ISSN: 1300-686X , eISSN: 2297-8747

• Computational Continuum Mechanics

  Journals

  ISSN: 1999-6691

• JOURNAL OF COMPUTATIONAL MATHEMATICS

  Journals

  ISSN: 0254-9409 , eISSN: 1991-7139

• Applied and Computational Mathematics

  Journals

  ISSN: 1683-3511 , eISSN: 1683-6154

• Journal of Computational Technologies

  Journals

  ISSN: 1560-7534 , eISSN: 2313-691X

• Journal of Computational Dynamics

  Journals

  eISSN: 2158-2505

• Theoretical and Computational Chemistry

  Journals

  ISSN: 1380-7323

• Nature Computational Science

  Journals

  eISSN: 2662-8457

• Journal of Computational Geometry

  Journals

  eISSN: 1920-189X

• Synthesis, Pharmacological Evaluation, and Computational Studies of Cyclic Opioid Peptidomimetics Containing β3-Lysine

  Publication

  • K. Wtorek
  • P. Lipiński
  • A. Adamska-Bartłomiejczyk
  • J. Piekielna-Ciesielska
  • J. Sukiennik
  • A. Kluczyk
  • A. Janecka

  - MOLECULES - Year 2021

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• Computational investigations of acoustic radiation from end shields of small-power electric motor

  Publication

  • D. Karkosiński

  - Archives of Electrical Engineering - Year 2007

  W artykule omówiono rozwój metod modelowania własności akustycznych maszyn elektrycznych. Wskazano na pomijalny dotąd, znaczący udział drgań tarcz łożyskowych w emitowaniu hałasu przez silniki małej mocy. Na podstawie równania falowego potencjału prędkości wyprowadzono analityczne formuły do obliczeń akustycznych w polu bliskim tarczy łożyskowej. Zamieszczono uzyskane z serii obliczeń dla pracującego silnika, rozkłady ciśnienia...

• Rapid communication: Computational simulation and analysis of a candidate for the design of a novel silk-based biopolymer

  Publication

  • E. Golas
  • C. Czaplewski

  - BIOPOLYMERS - Year 2014

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• Theoretical and computational analysis of nonlinear fractional integro-differential equations via collocation method

  Publication

  • R. Amin
  • H. Ahmad
  • K. Shah
  • M. Bilal
  • W. Sumelka
  • M. B. Hafeez

  - CHAOS SOLITONS & FRACTALS - Year 2021

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