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Wyniki wyszukiwania dla: modeling

Wyniki wyszukiwania dla: modeling

  • Modeling Parallel Applications in the MERPSYS Environment

    Publikacja

    - Rok 2016

    The chapter presents how to model parallel computational applications for which simulation of execution in a large-scale parallel or distributed environment is performed within the MERPSYS environment. Specifically, it is shown what approaches can be adopted to model key paradigms often used for parallel applications: master-slave, geometric parallelism (single program multiple data), pipelined and divide-and-conquer applications....

  • Modeling SPMD Application Execution Time

    Publikacja

    - Rok 2016

    Parallel applications in a Single Process Multiple Data paradigm assume splitting huge amounts of data to multiple processors working in parallel at small data packets. As the individual data packets are not independent, the processors must interact with each other to exchange results of the calculations with their adjacent partners and take these results into account in their own computations. An example of SPMD is geometric parallelism...

  • Modeling energy consumption of parallel applications

    The paper presents modeling and simulation of energy consumption of two types of parallel applications: geometric Single Program Multiple Data (SPMD) and divide-and-conquer (DAC). Simulation is performed in a new MERPSYS environment. Model of an application uses the Java language with extension representing message exchange between processes working in parallel. Simulation is performed by running threads representing distinct process...

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  • The CFD modeling in bioreactor tracer studies

    Publikacja

    - TASK Quarterly - Rok 2007

    W artykule zaprezentowano badania traserowe w bioreaktorach z osadem czynnym. Przedstawiono efekty działania procesu dyspersji na podstawie obliczonych podłużnych profili koncentracji znacznika w komorach osadu czynnego zlokalizowanych na Oczyszczalni Ścieków "Wschód" w Gdańsku. W ramach badań wykonano symulację przepływu substancji nieaktywnej (bazując na pomierzonych profilach stężenia znacznika) stosując jednowymiarowe równanie...

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  • Modeling of nonlinear generation in a bubble layer

    Publikacja

    - HYDROACOUSTICS - Rok 2009

    Praca prezentuje numeryczne podejście do zagadnienia liniowego i nieliniowego rozpraszania w warstwie z pęcherzykami. Badania numeryczne niekoherentnego rozpraszania wykonano stosując metodę Monte Carlo. Propagację i wsteczne rozpraszanie sygnałów badano w oparciu o równanie Rayleigha-Plesseta.

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  • Application of muscle model to the musculoskeletal modeling

    The purpose of this paper is to investigate new fusiform muscle models. Each of these models treats a muscle as a system composedof parts characterized by different mechanical properties. These models explain the influence of differences in the stiffness of lateral parts and the degree of muscle model discretization. Each muscle model is described by a system of differential equations and a single integro-differential equation....

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  • Computer modeling and testing of structural metamaterials

    Publikacja
    • T. Krolikowski
    • R. Knitter
    • A. Blazejewski

    - Procedia Computer Science - Rok 2019

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  • Molecular Modeling of Meta II Rhodopsin

    Publikacja

    - QSAR & COMBINATORIAL SCIENCE - Rok 2006

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  • Alternative Modeling of Volunteer Based Systems

    Publikacja

    - Rok 2016

    The canonical approach to model a flow of a voluntary based computing, as presented in Chapter 7 may tax the capacity of the simulator, especially when a more complex model of Voluntary Computing, proposed in [1], is used which would imply that, for typical heterogeneous groups of volunteers, several thousands of threads would have to be run inside the simulator, to mimic closely the behaviour of every volunteer. This chapter presents...

  • Modeling DAC Application Execution Time

    Publikacja

    - Rok 2016

    An application written in the Divide And Conquer paradigm is more difficult to model than SPMD application because of complex algorithm, causing use of many coefficients in a computational complexity function. Processors are divided into various layers, each layer contains different number of processors. Data packets processed in different layers and transferred between layers have different length. Moreover first layer processors use...

  • Modeling bioaugmentation with nitrifiers in membrane bioreactors

    Publikacja
    • A. Mannucci
    • G. Munz
    • G. Mori
    • J. Mąkinia
    • C. Lubello
    • J. A. Oleszkiewicz

    - WATER SCIENCE AND TECHNOLOGY - Rok 2015

    Bioaugmentation with nitrifiers was studied using two pilot-scale membrane bioreactors, with the purpose of assessing the suitability of state-of-the-art activated sludge models (ASMs) in predicting the efficiency of bioaugmentation as a function of operating conditions. It was demonstrated that the temperature difference between seeding and seeded reactors (ΔT) affects bioaugmentation efficiency. Experimental data were accurately...

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  • Numerical modeling of quantum dynamical processes

    Publikacja

    - Rok 2023

    In this dissertation I present a high-precision (15, 18 or 33 decimal places) C++ implementation of quantum dynamics time propagation algorithms for both time-independent and time-dependent Hamiltonian with an inhomogeneous source term. Moreover I present an extension of both algorithms for time propagation to handle arbitrary number of coupled electronic levels. I have performed a careful validation of these implementations comparing...

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  • Modeling Dynamics of Autonomous Underwater Vehicle.

    Publikacja

    Artykuł dotyczy budowy modelu autonomicznego pojazdu podwodnego do celów syntezy układu sterowania pojazdem. Rozważany pojazd ma długośc ok. 1 m i 30 cm średnicy. Wyposażony jest w 5 pędników, które pozwalają na sterowanie w pięciu stopniach swobody. Do badań wykorzystano model o 4 stopniach swobody. Dokonano identyfikacji parametrycznej modelu. Model zrealizowano w środowisku programowym Matlab/Simulink.

  • Systems modeling and simulation for environmental management.

    Publikacja

    - Rok 2004

    W pracy omówiono podstawy systemowego modelowania i symulacji w szerokim zakresie zagadnień związanych z zarządzaniem przepływami informacji w środowisko naturalnym.

  • On constitutive modeling for technical woven fabric

    Publikacja

    W pracy przestawiono kilka modeli konstytutywnych przyjmowanych do opisu zachowania się tkanin technicznych. Oprócz modeli zaczerpniętych z literatury autorzy prezentują własną koncepcje modelu stanowiąca rozszerzenie modelu sieci gęstej.This paper describes several types of the constitutive models used for the technical woven fabric description. Besides of the literatures examples of the constitutive models, the authors presented...

  • A methodology of visual modeling language evaluation

    Publikacja

    - Rok 2005

    Metody oceny jakości metod modelowania są istotnym elementem inżynierii języków modelowania wizualnego. W referacie zaproponowano metodę oceny języków modelowania wizualnego na podstawie wymiarów poznawczych. Zaprezentowano metodologiczną dyskusję zastosowania nauk psychologicznych do oceny metod modelowania, metodologię CD-VML, powiązaną z nią metodę CD-VML-UC do oceny przypadków użycia oraz weryfikację metodologii.

  • Dynamics of S-unimodal maps used in population modeling.

    Dane Badawcze
    open access

    S-unimodal maps are maps of the interval with negative Schwarzian derivative and having only one turning point (such that the map is increasing to the left of the turning point and decreasing to the right of it). Theory of S-unimodal maps is now a well-developed branch of discrete dynamical systems, including famous Singer theorem which implies existence...

  • Biomechanics and Modeling in Mechanobiology

    Czasopisma

    ISSN: 1617-7959 , eISSN: 1617-7940

  • Modeling of the internal combustion engine cooling system

    Publikacja

    The article concerns computer modelling of processes in cooling systems of internal combustion engines. Modelling objectives and existing commercial programs are presented. It also describes Author’s own method of binding graphs used to describe phenomena in the cooling system of a spark ignition engine. The own model has been verified by tests on the engine dynamometer. An example of using a commercial program for experimental...

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  • Reliability Modeling for SPMD and DAC Applications in MERPSYS

    Publikacja

    - Rok 2016

    In this chapter we shall see a method for modeling of reliability of application execution in the MERPSYS system, and the results of reliability simulation of the same SPMD and DAC application which we have previously presented in this book. Unlike energy usage modeling and modeling of execution efficiency we could not compare the reliability model and simulation results to real experiment just because the experiment would last too...

  • Triangulation-based Constrained Surrogate Modeling of Antennas

    Publikacja

    Design of contemporary antenna structures is heavily based on full-wave electromagnetic (EM) simulation tools. They provide accuracy but are CPU-intensive. Reduction of EM-driven design procedure cost can be achieved by using fast replacement models (surrogates). Unfortunately, standard modeling techniques are unable to ensure sufficient predictive power for real-world antenna structures (multiple parameters, wide parameter ranges,...

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  • Ionosphere variability II: Advances in theory and modeling

    Publikacja
    • I. Tsagouri
    • D. R. Themens
    • A. Belehaki
    • J. Shim
    • M. M. Hoque
    • G. Nykiel
    • C. Borries
    • A. Morozova
    • T. Barata
    • W. J. Miloch

    - ADVANCES IN SPACE RESEARCH - Rok 2023

    This paper aims to provide an overview on recent advances in ionospheric modeling capabilities, with the emphasis in the efforts relevant to electron density variability. The discussion spans a wide range of model formulations (e.g., from purely empirical to physics-based ones and data-driven approaches) seeking for advances or gaps with regard to present challenges. This discussion is further supported by consideration of the...

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  • Visual Dimensions of Modeling Languages in Interdisciplinary Perspective

    Publikacja

    - Rok 2013

    Użyteczność języków modelowania wizualnego zależy od notacji. Notacja może być postrzegana jako zestaw wizualnych komponentów, które w określony sposób oddziałują na ludzkie oko i ludzki mózg. Referat przedstawia analizę interdyscyplinarną wykonaną w celu lepszego zrozumienia wizualnych wymiarów języków modelowania. Wizualne wymiary pochodzą z teorii opisujących percepcję wzrokową, wizualizację danych oraz reprezentacje poznawcze....

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  • Design-Oriented Constrained Modeling of Antenna Structures

    Publikacja

    - Rok 2018

    Fast surrogate models are crucially important to reduce the cost of design process of antenna structures. Due to curse of dimensionality, standard (data-driven) modeling methods exhibit serious limitations concerning the number of independent geometry parameters that can be handled but also (and even more importantly) their parameter ranges. In this work, a design-oriented modeling framework is proposed in which the surrogate is...

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  • Energy Consumption Modeling in SPMD and DAC Applications

    Publikacja

    - Rok 2016

    In this chapter, we show a study of energy consumption during execution of SPMD and DAC application – the same applications which time of execution we modeled in the previous two chapters. We measured an average power usage at a single node of the GALERA+ cluster during application execution and then we modeled the total energy consumption by the application. Next we simulated the applications using MERPSYS and we compared the...

  • Semantic modeling of contextual augmented reality environments

    Publikacja
    • D. Rumiński

    - Rok 2018

    Despite significant progress in the field of augmented reality (AR), regarding both hardware and software, there is still a lack of universal models and methods that would enable building ubiquitous AR systems that could be used anywhere and anytime, covering different application areas. This dissertation describes a new approach to building AR systems, called the Contextual Augmented Reality Environment (CARE). The CARE approach...

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  • Modeling and simulation of tool cycle in manufacturing cell

    Publikacja

    The paper addresses issues concerning modeling and analysis of tool flow within a three-machine manufacturing cell used for small batch manufacturing of a definite spectrum of prismatic parts. The approach utilizes a method for job and tool allocation to work centers with limited number of machines and capacity of tool resources, based on the analysis of formalized relations: job - tool sets required. Selected tool flow control...

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  • Traffic Modeling in IMS-based NGN Networks

    In the modern world the need for accurate and quickly delivered information is becoming more and more essential. In order to fulfill these requirements, next generation telecommunication networks should be fast introduced and correctly dimensioned. For this reason proper traffic models must be identified, which is the subject of this paper. In the paper standardization of IMS (IP Multimedia Subsystem) concept and IMS-based NGN...

  • One-Dimensional Modeling of Flows in Open Channels

    Publikacja

    - Rok 2015

    In this chapter, modeling of the unsteady open channel flow using one-dimensional approach is considered. As this question belongs to the well-known and standard problems of open channel hydraulic engineering, comprehensively presented and described in many books and publications, our attention is focused on some selected aspects only. As far as the numerical solution of the governing equations is considered, one can find out that...

  • Advanced Modeling of Management Processes in Information Technology

    Publikacja

    This book deals with the issues of modeling management processes of information technology and IT projects while its core is the model of information technology management and its component models (contextual, local) describing initial processing and the maturity capsule as well as a decision-making system represented by a multi-level sequential model of IT technology selection, which acquires a fuzzy rule-based implementation...

  • Technical Engine for Democratization of Modeling, Simulations, and Predictions

    Publikacja

    - Rok 2012

    Computational science and engineering play a critical role in advancing both research and daily-life challenges across almost every discipline. As a society, we apply search engines, social media, and se- lected aspects of engineering to improve personal and professional growth. Recently, leveraging such aspects as behavioral model analysis, simulation, big data extraction, and human computation is gain- ing momentum. The nexus...

  • Modeling and experimental investigation of the small UPQC systems

    Publikacja
    • R. Strzelecki
    • G. Benysek
    • J. Rusinski
    • H. Debicki

    - Rok 2005

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  • Modeling of Ice Phenomena in the Mouth of the Vistula River

    Publikacja

    The mouth of the Vistula River, which is a river outlet located in tideless area, is analyzed. The Vistula River mouth is a man-made, artificial channel which was built in the 19th century in order to prevent the formation of ice jams in the natural river delta. Since the artificial river outlet was constructed, no severe ice-related flood risk situations have ever occurred. However, periodic ice-related phenomena still have an impact...

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  • Modeling of polarimetric sensors using LabVIEW environment

    Publikacja

    W artykule przedstawiono program do modelowania światłowodowych sensorów polarymetrycznych. Program ten, stworzony w środowisku LabVIEW, wyznacza odpowiedź nieidealnego światłowodowego sensora polarymetrycznego na siłę działającą na przetwornik pomiarowy. Omówiono problemy występujące w procesie tworzenia oprogramowania do modelowania zjawisk fizycznych w graficznym środowisku programistycznym. Przedstawiono wybrane wyniki modelowania.

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  • Multilevel pharmacokinetics-driven modeling of metabolomics data

    Publikacja

    - METABOLOMICS - Rok 2017

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  • Computer modeling of the solution conformation of cyclic enkephalins

    Publikacja
    • J. Malicka
    • M. Groth
    • C. Czaplewski
    • R. Kasprzykowska
    • A. Liwo
    • L. Łankiewicz
    • W. Wiczk

    - LETTERS IN PEPTIDE SCIENCE - Rok 1998

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  • Thermodynamic vs. extrathermodynamic modeling of chromatographic retention

    Publikacja

    - Journal of Chromatography A - Rok 2011

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  • Modeling of photovoltaic properties of bilayer organic systems

    Publikacja

    Praca prezentuje teoretyczny opis charakterystyki prądowo-napięciowej i efektu fotowoltaicznego układu zbudowanego z dwóch warstw organicznych i elektrod. Rozpatrywane jest przybliżenie stałego pola elektrycznego oraz wpływ pułąpkowania nośników ładunku.

  • Modeling of acoustics of hearing aid earmold systems

    Publikacja

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  • Modeling knee joint endoprosthesis mode of deformation

    Publikacja
    • V. Skeeba
    • V. Ivancivsky

    - IOP Conference Series: Materials Science and Engineering - Rok 2018

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  • Waveguide modeling as a tool for fitting a hearing aid

    Publikacja

    - Journal of the Acoustical Society of America - Rok 2000

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  • Quality Modeling in Grid and Volunteer-Computing Systems

    Publikacja

    - Rok 2013

    A model of computational quality in large-scale computing systems was presented in the previous chapter of this book. This model describes three quality attributes: performance, reliability and energy efficiency. We assumed that all processes in the system are incessantly ready to perform calculations and that communication between the processes occurs immediately. These assumptions are not true for grid and volunteer computing...

  • Half-Order Modeling of Saturated Synchronous Machine

    Publikacja

    Noninteger order systems are used to model diffusion in conductive parts of electrical machines as they lead to more compact and knowledge models but also to improve their precision. In this paper a linear half-order impedance model of a ferromagnetic sheet deduced from the diffusion of magnetic field is briefly introduced. Then, from physical considerations and finite elements simulation, the nonlinear half-order impedance model...

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  • Modeling of event trees for the rapid scenario development

    Publikacja

    - Rok 2015

    The paper concerns the safety of ships in abnormal/damage conditions. Some conclusions following from the research associated with development of a method for safety assessment of ships in abnormal/damage conditions is presented in the paper. The method called SSAMADC (Ship Safety Assessment Method in Abnormal/Damage Conditions) is a risk-based method and is connected with application of the quantitative risk assessment QRA approach....

  • Modeling and Simulation Method of Precision Grinding Processes

    Publikacja
    • B. Bałasz
    • T. Królikowski

    - Rok 2007

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  • Selected reflections on formal modeling in Industry 4.0

    Publikacja
    • M. Kostrzewski
    • N. Chamier-Gliszczyński
    • T. Królikowski

    - Procedia Computer Science - Rok 2020

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  • Molecular Modeling of the Neurohypophyseal Receptor/Atosiban Complexes

    Publikacja
    • M. Slusarz
    • R. Slusarz
    • R. Trojnar
    • K. Wisniewski
    • J. Ciarkowski
    • R. Ślusarz

    - Protein & Peptide Letters - Rok 2003

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  • Fading Modeling in Maritime Container Terminal Environments

    Publikacja

    - IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY - Rok 2018

    In this paper, an analytical model for slow and fast fading effects in maritime container terminals is derived, from fitting distributions to the results of measurements performed in an actual operational environment. The proposed model is composed of a set of equations, enabling to evaluate fading statistical distribution parameters for different system and environments conditions, as a function of frequency, base station antenna...

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  • FEM approach to modeling of an irregular trabecular structure

    Publikacja

    The aim of the study is elaboration of a method for creating irregular scaffolds that can be used to model the behaviour of trabecular bone placed in the proximal epiphysis of the femur. The scope of the study encompasses creating six numerical models of irregular scaffolds (two solid irregular scaffolds, two shell irregular scaffolds and two shell irregular scaffolds with fortification) and performing numerical analysis of the...

  • Modeling of the process of selected fire signaling systems

    Publikacja

    - Diagnostyka - Rok 2019

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