Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "problem modeling" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-12 z 12
    Tytuł:
    Languages in Problem Solving and Modeling
    Autorzy:
    Śliwa, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/475018.pdf
    Data publikacji:
    2012
    Wydawca:
    Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
    Tematy:
    problem modeling and solving
    formal modeling languages
    expert and interactive
    approach to problem modeling
    SEQUAL
    System Dynamics language
    Opis:
    The article concerns the problem of languages used in modeling and solving problems. Its framework stems from the distinction between two problem solving approaches – expert and interactive approach. The language choice is particularly important for the latter; we cannot solve a problem using a language that has not been used for the problem description. The text presents some arbitrarily chosen problem modeling languages, including computer supported ones. Special attention is paid to the SEQUAL and System Dynamics language.
    Źródło:
    Journal of Entrepreneurship, Management and Innovation; 2012, 8, 4; 69-82
    2299-7075
    2299-7326
    Pojawia się w:
    Journal of Entrepreneurship, Management and Innovation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An extended problem to Bertrands paradox
    Autorzy:
    Ardakani, Mostafa
    Wulff, Shaun
    Powiązania:
    https://bibliotekanauki.pl/articles/729808.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    probability space
    probability theory
    problem modeling
    random chords
    Opis:
    Bertrand's paradox is a longstanding problem within the classical interpretation of probability theory. The solutions 1/2, 1/3, and 1/4 were proposed using three different approaches to model the problem. In this article, an extended problem, of which Bertrand's paradox is a special case, is proposed and solved. For the special case, it is shown that the corresponding solution is 1/3. Moreover, the reasons of inconsistency are discussed and a proper modeling approach is determined by careful examination of the probability space.
    Źródło:
    Discussiones Mathematicae Probability and Statistics; 2014, 34, 1-2; 23-34
    1509-9423
    Pojawia się w:
    Discussiones Mathematicae Probability and Statistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simultaneous pickup and delivery model suggestion for personnel transportation in COVID-19 pandemic conditions
    Autorzy:
    Köse, Erkan
    Kokmazer, Ahsen
    Vural, Danışment
    Gökceoğlu, Gökçe Gül
    Şavlı, Pınar
    Powiązania:
    https://bibliotekanauki.pl/articles/29127991.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    optimization
    mathematical modeling
    vehicle routing
    simultaneous pickup problem
    delivery problem
    Opis:
    The impact of COVID-19 on the transportation costs of a large-scale company has been examined. Before the pandemic, shift personnel were transported to the factory by shuttles, and after a quick shift change, other shift personnel were transported back to their homes. However, with the implementation of laws mandating the reduction of shuttle seat capacities, transportation costs have risen significantly. To address this issue, a new simultaneous pickup and delivery model is proposed as an alternative to the separate transportation of shift workers. The results of this study indicate that the proposed model provides a substantial advantage in terms of both the number of vehicles used and the total distance traveled, leading to a significant reduction in costs. This research underscores the importance of effective operations research practices for the profitability of companies, particularly in extraordinary circumstances such as the COVID-19 pandemic.
    Źródło:
    Operations Research and Decisions; 2023, 33, 4; 119--131
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer implementation of mass transport in Matlab environment for modeling Epitaxial growth process with moving boundary problem
    Autorzy:
    Gulkowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1940715.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    moving boundary problem
    computational modeling
    epitaxial growth
    Opis:
    Due to the possibility of producing high quality and low cost silicon substrates the Epitaxial Lateral Overgrowth technology may find its application in the photovoltaic industry. However, a lateral growth process depends on many technological parameters such as the temperature of the system, the cooling rate, the solvent or the geometry of the mask. For this reason finding optimized settings for these factors in experimental research is difficult and time consuming. Numerical analysis of the growth process leads to better understanding of the fundamentals of the growth process. For this reason a computational model of epitaxial growth was proposed. This paper focuses on the accuracy of the numerical solution of the mass transport process during epitaxial growth. The method was implemented in the Matlab environment for the moving boundary application. The results of the calculations are presented.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 1; 15-23
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal control of a fractional-order enzyme kinetic model
    Autorzy:
    Al-Basir, F.
    Elaiw, A. M.
    Kesh, D.
    Roy, P. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/206336.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    enzyme kinetics
    cooperative phenomenon
    fractional derivative
    mathematical modeling
    Hamiltonian
    optimal control problem
    Opis:
    Enzymes play a significant role in controlling the characteristics of various chemical and biochemical reactions. They act as catalysts that increase the rate of reaction without undergoing any change in quantity. Enzymatic reactions occur through the active sites, which combine with the substrates to form intermediate complexes, subsequently leading to products. An enzyme having two active sites can show cooperative phenomena. Against this background, an enzyme-kinetic mathematical model is formulated using fractional order derivatives. Optimal control mechanism has been incorporated into the fractional-order model system to maximize the product output. Euler-Lagrange optimality conditions are derived for the FOCP (fractional order control problem) using maximum principle. Numerical iterative schemes have been developed to solve the fractional order optimal control problem through Matlab.
    Źródło:
    Control and Cybernetics; 2015, 44, 4; 443-461
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected multicriteria shortest path problems: An analysis of complexity, models and adaptation of standard algorithms
    Autorzy:
    Tarapata, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/929638.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    problem najkrótszej ścieżki
    złożoność algorytmu
    algorytm aproksymacji
    multiobjective shortest path
    stochastic shortest path
    algorithm complexity
    routing problem
    terrain-based modeling
    approximation algorithm
    Opis:
    The paper presents selected multicriteria (multiobjective) approaches to shortest path problems. A classification of multiobjective shortest path (MOSP) problems is given. Different models of MOSP problems are discussed in detail. Methods of solving the formulated optimization problems are presented. An analysis of the complexity of the presented methods and ways of adapting of classical algorithms for solving multiobjective shortest path problems are described. A comparison of the effectiveness of solving selected MOSP problems defined as mathematical programming problems (using the CPLEX 7.0 solver) and multi-weighted graph problems (using modified Dijkstra’s algorithm) is given. Experimental results of using the presented methods for multicriteria path selection in a terrain-based grid network are given.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2007, 17, 2; 269-287
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of simulation environment for solving the assembly line balancing problem
    Autorzy:
    Danilczuk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/117695.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    line balancing problem
    manufacturing simulation
    Tecnomatix Plant Simulation
    manufacturing
    production system modeling
    symulacja produkcji
    produkcja
    modelowanie systemu produkcyjnego
    Opis:
    The paper describes the application of a simulation environment (Tecnomatix Plant Simulation) for solving a real manufacturing problem. The studied case consisted in rebalancing the production line with a specified number of operators on the line. The first stage of the study involved determination of the production cycle and key performance indicators. The production system was then divided into work cells. After that, proposed design assump-tions were verified via a simulation model.
    Źródło:
    Applied Computer Science; 2018, 14, 1; 42-52
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of dual phase lag model parameters using the evolutionary algorithms
    Autorzy:
    Mochnacki, B.
    Paruch, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380526.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microscale heat transfer
    dual phase lag model
    inverse problem
    numerical modeling
    przepływ mikroskalowy
    model dwufazowy
    zadanie odwrotne
    model numeryczny
    Opis:
    Generalization of Fourier law, in particular the introduction of two ‘delay times’ (relaxation time τq and thermalization time τT) leads to the new form of energy equation called the dual-phase-lag model (DPLM). This equation should be applied in a case of microscale heat transfer modeling. In particular, DPLM constitutes a good approximation of thermal processes which are characterized by extremely short duration (e.g. ultrafast laser pulse), extreme temperature gradients and geometrical features of domain considered (e.g. thin metal film). The aim of considerations presented in this paper is the identification of two above mentioned positive constants τq, τT. They correspond to the relaxation time, which is the mean time for electrons to change their energy states and the thermalization time, which is the mean time required for electrons and lattice to reach equilibrium. In this paper the DPLM equation is applied for analysis of thermal processes proceeding in a thin metal film subjected to a laser beam. At the stage of computations connected with the identification problem solution the evolutionary algorithms are used. To solve the problem the additional information concerning the transient temperature distribution on a metal film surface is assumed to be known.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 3 spec.; 277-281
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Force-Velocity Characteristics of Individual Human Skeletal Muscles: TBCIat and TBCIong. Outline of the Method
    Autorzy:
    Kornecki, S.
    Siemieński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/90398.pdf
    Data publikacji:
    1998
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    force-velocity characteristics
    modeling of the locomotor system
    muscle synergy problem
    iteration procedure
    układ ruchowy
    staw łokciowy
    synergia mięśniowa
    Opis:
    The aim of the work is to outline a procedure of finding force-velocity (F-V) characteristics (F = f(V)) of individual skeletal muscles of the human locomotor system. The presentation is based on an example concerning extensors of the elbow joint: the lateral and long heads of triceps brachii (TBCIat and TBCIong). The experimental part of the procedure involves a natural movement of using the upper extremity to push an external object of variable, adjustable load, engaging both the elbow and shoulder joint. Five men aged 23 took part in the experiment. Their task was to push the handle of a physical pendulum whose moment of inertia could be adjusted within the range of 58 kg ∙ m2-450 kg ∙ m2, so as to give it maximum angular velocity. During each trial the movement of the trunk, of the upper extremity and of the pendulum was video recorded and the force applied with the hand to the handle of the pendulum was measured. In order to find the F-V characteristics a simulation model SHOULDER was used, which is capable of solving the synergy problem for muscles of the arm and the shoulder girdle. It was found that despite considerable dispersion of experimental points the respective regression lines revealed a clear tendency of decreasing muscle force for increased shortening velocity of the monoarticular head (TBCIat) and of increasing muscle force for increased lengthening velocity of the Particular head (TBCIong) of the triceps brachii muscle.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 1998, 4, 1; 75-83
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Mathematical Model of Hydrodynamics and Heat and Mass Transfer at Formation of Steel Ingots and Castings
    Autorzy:
    Bondarenko, V. I.
    Bilousov, V. V.
    Nedopekin, F. V.
    Shalapko, J. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/383139.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mathematical model
    numerical modeling
    steel ingot
    turbulent convection
    expert system
    physical statement of problem
    model matematyczny
    modelowanie numeryczne
    wlewek stalowy
    system ekspertowy
    Opis:
    The generic mathematical model and computational algorithm considering hydrodynamics, heat and mass transfer processes during casting and forming steel ingots and castings are offered. Usage domains for turbulent, convective and non-convective models are determined depending on ingot geometry and thermal overheating of the poured melt. The expert system is developed, enabling to choose a mathematical model depending on the physical statement of a problem.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 1; 13-16
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Study of AMPL, Pyomo and JuMP Optimization Modeling Languages on a Flood Control Problem Example
    Studium porównawcze języków modelowania optymalizacyjnego AMPL, Pyomo i JuMP na przykładzie zadania sterowania falą powodziową
    Autorzy:
    Karbowski, Andrzej
    Wyskiel, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2068672.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    optimization
    modeling languages
    programming
    flood control problem
    nonlinear programming
    optimal control
    optymalizacja
    języki modelowania
    programowanie
    sterowanie falą powodziową
    programowanie nieliniowe
    sterowanie optymalne
    Opis:
    The purpose of this work is a comparative study of three languages (environments) of optimization modeling: AMPL, Pyomo and JuMP. The comparison will be based on three implementations of an optimal discrete-time flood control problem formulated as a nonlinear programming problem. The codes for individual models and differences between them will be presented and discussed. Various aspects will be taken into account, e.g. simplicity and intuitiveness of implementation.
    Celem pracy jest badanie porównawcze trzech języków (środowisk) modelowania optymalizacyjnego: AMPL, Pyomo i JuMP. Porównanie jest oparte na trzech implementacjach zadania optymalnego sterowania falą powodziową z czasem dyskretnym, sformułowanego jako zadanie programowania nieliniowego. Przedstawione i omówione zostaną kody poszczególnych modeli oraz różnice między nimi. Uwzględnione zostaną różne aspekty, m.in. prostota i intuicyjność implementacji.
    Źródło:
    Pomiary Automatyka Robotyka; 2021, 25, 4; 19--24
    1427-9126
    Pojawia się w:
    Pomiary Automatyka Robotyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Study of AMPL, Pyomo and JuMP Optimization Modeling Languages on a Network Linear Programming Problem Example
    Studium porównawcze języków modelowania optymalizacyjnego AMPL, Pyomo i JuMP na przykładzie liniowego zadania programowania sieciowego
    Autorzy:
    Karbowski, Andrzej
    Wyskiel, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2068625.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    optimization
    modeling languages
    programming
    shortest path problem
    network problems
    linear programming
    optymalizacja
    języki modelowania
    zadanie najkrótszej ścieżki
    zadania sieciowe
    programowanie liniowe
    zadania grafowe
    Opis:
    The purpose of this work is a comparative study of three languages (environments) of optimization modeling: AMPL, Pyomo and JuMP. The comparison will be based on three implementations of the shortest path problem formulated as a linear programming problem. The codes for individual models and differences between them will be presented and discussed. Various aspects will be taken into account, such as: simplicity and intuitiveness of implementation, availability of specific data structures for a LP network problems, etc.
    Celem pracy jest zbadanie i porównanie możliwości trzech języków (środowisk) modelowania optymalizacyjnego: AMPL, Pyomo i JuMP. Porównanie zostanie oparte na trzech implementacjach zadania najkrótszej ścieżki sformułowanego jako zadanie programowania liniowego. Przedstawione i omówione zostaną kody poszczególnych modeli oraz różnice między nimi. Pod uwagę będą brane różne aspekty, takie jak: prostota i intuicyjność implementacji, dostępność określonych struktur danych dla problemów z siecią LP itp.
    Źródło:
    Pomiary Automatyka Robotyka; 2021, 25, 3; 23--30
    1427-9126
    Pojawia się w:
    Pomiary Automatyka Robotyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies