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Wyświetlanie 1-15 z 139
Tytuł:
Computer simulation of forest fire on the basis of digital maps and weather forecast
Autorzy:
Szajewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/137030.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Służby Pożarniczej
Tematy:
computer simulation
fire modeling system
forest fire
digital maps of forest
Opis:
The article presents the integration of digital topographic map of forests and short-term weather forecast al lowing to conduct a computer simulation of forest fire. To execute a simulation, a software was produced. The software includes deterministic mathematical model of forest fire, programmed on the basis of developed assumptions. Creation of mentioned environment simulation was based on a need for the optimum planning of extinguishing actions in local fire service centres.
Źródło:
Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej; 2011, 42; 7-14
0239-5223
Pojawia się w:
Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fractional discrete model of an electrical drive with brushless micro-motor
Autorzy:
Matusiak, M.
Bąkała, M.
Wojciechowski, R.
Ostalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/200454.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
system modeling
system identification
fractional order calculus
Opis:
The use of fractional-order calculus for system modeling is a good alternative to well-known classic integer-order methods, primarily due to the precision with which the modeled object may be mapped. In this study, we created integer and fractional discrete models of a real object – a highspeed brushless micro-motor. The accuracy of the models was verified and compared.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 421-427
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information System of Coffee Product Sales
Autorzy:
Krasilchuk, Svitlana
Shestakevych, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/1833892.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
marketplace
sales
system modeling
coffee product sales
Opis:
Forced to develop the online component of the sales strategy, small and medium business requires well-designed information systems and technologies, that will fulfill all the needs and allow working in an actual – distant – business environment. Using digital platforms sometimes became a matter of need for coffee trading. Although digital marketplaces exist in a variety of branches, the specialized platform seems to be the better choice for coffee products sales because of its international specifics. Modeling the process of tasks performing in the information system of coffee products sales, its dynamic aspects, time-ordered interaction of objects in it, will allow designing thoroughly thought out information system, realized with actual software methods and means.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2020, 9, 1; 3--9
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
UML Simulation of a Topology Configuration Model
Autorzy:
Zieliński, Z.
Stasiak, A.
Dąbrowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/307600.pdf
Data publikacji:
2012
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
configuration topology
system modeling
UML model simulation
Opis:
The article presents the application of simulation methods for topological models to analyze and design information systems. By using UML extensions and the UAL language it is possible not only to build a topological model for software, but also to perform efficient simulations of topological models. Additionally, it is possible to take into account the restrictive conditions stored in UAL and OCL languages. To execute the simulation the authors used an simulator from IBM. These concepts and methods are illustrated by examples.
Źródło:
Journal of Telecommunications and Information Technology; 2012, 4; 46-53
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agents and Multi-agent Systems in the Management of Electric Energy Systems
Autorzy:
Bitimanova, Saltanat
Shukirova, Aliya
Powiązania:
https://bibliotekanauki.pl/articles/24200526.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
communication protocol
electricity consumption
control system
planning
system modeling
Opis:
Electric energy systems need constant modernization and updating to solve such problems as distributed management, self-sealing, improving the quality of electricity, demand management, and integration of renewable energy systems. Currently, energy systems need advanced and intelligent technologies to perform various system-level tasks. The purpose of this research is to analyze the existing control systems of electric energy systems, as well as to consider the possibility of using multi-agent systems to control electric energy systems. To achieve the aim of the research, the following scientific approaches were implemented: method of direct research, experimental method, questioning, comparative method, analysis method, and method of observation. The primary value of the research is in the novelty of the work and the fact, that functional components in multi-agent systems act as independent agents, which can interact with each other through a message communication system. This provides a simple connection between the components, which can benefit complex systems designed for an intelligent network. The intelligent network provides an efficient energy management system, and the modernization of the existing power system using a multi-agent system provides solutions to many problems. The best implementation of a multi-agent system can be achieved through the employment of fast and protected communication protocols. The authors of the research have conducted research and presented key statistical data on electricity usage in Kazakhstan over the past few years. The practical significance of the research is determined by the applied results, and their scientific significance, which is conditioned upon the use of deep, modern mathematical results and the development of an optimal control system. This research is a part of a universal model and optimal system of emergency quick response, conducting a quick preliminary prognosis as well as ensuring more lasting planning in electricity consumption.
Źródło:
Management and Production Engineering Review; 2023, 14, 2; 99--110
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Management of development of manufacturing enterprises in decentralization conditions
Autorzy:
Usov, Anatolii V.
Niekrasova, Liubov A.
Dašić, Predrag V.
Powiązania:
https://bibliotekanauki.pl/articles/1841389.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
development
manufacturing enterprise
system modeling
production system
strategic planning
Opis:
This article summarizes the arguments and counterarguments within the scientific discussion on identifying the enterprise’s state to evaluate its effectiveness and optimize the target functions in solving enterprise development problems. The proposed scientific and methodological approach to modeling the enterprise development management system under decentralization conditions and its practical implementation makes it possible to determine the dominant development parameters of manufacturing enterprises that influence the United Territorial Community and to timely track the impulses and space of the United Territorial Community state, taking into account the PS state as parameters for its development. The proposed analysis of the Production System state within the United Territorial Community framework and evaluating its development dynamics shows the necessity of forming a system of generalized vector-scalar, situationally oriented indicators.
Źródło:
Management and Production Engineering Review; 2020, 11, 4; 46-55
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Management of development of manufacturing enterprises in decentralization conditions
Autorzy:
Usov, Anatolii V.
Niekrasova, Liubov A.
Dašić, Predrag V.
Powiązania:
https://bibliotekanauki.pl/articles/1841402.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
development
manufacturing enterprise
system modeling
production system
strategic planning
Opis:
This article summarizes the arguments and counterarguments within the scientific discussion on identifying the enterprise’s state to evaluate its effectiveness and optimize the target functions in solving enterprise development problems. The proposed scientific and methodological approach to modeling the enterprise development management system under decentralization conditions and its practical implementation makes it possible to determine the dominant development parameters of manufacturing enterprises that influence the United Territorial Community and to timely track the impulses and space of the United Territorial Community state, taking into account the PS state as parameters for its development. The proposed analysis of the Production System state within the United Territorial Community framework and evaluating its development dynamics shows the necessity of forming a system of generalized vector-scalar, situationally oriented indicators.
Źródło:
Management and Production Engineering Review; 2020, 11, 4; 46-55
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of circulatory system with coronary circulation and the POLVAD ventricular assist device
Autorzy:
Siewnicka, A.
Fajdek, B.
Janiszowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/384942.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
PExSim
modeling of the circulatory system
modeling of the coronary system
modeling of the ventricular assist device
POLVAD
Opis:
This paper presents an application of a numerical package for modeling and simulation of human circulatory system. The model includes a coronary circulation and the parallel heart assistance. The cases of the simulation of the proper and the pathology circulation conditions, such as left or right heart failure are shown. A description of the coronary circulation system is presented and obtained coronary sinus occlusion simulation results are included. An implementation of the whole package as a part of PExSim application is contained. The identification experiment for the ventricular assist device has been described and different methods of the artificial ventricle modeling are presented. An example of use of a fuzzy logic to presentation the dynamics of the POLVAD device is also included. Advantages of developed simulation platform are discussed.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 4; 7-12
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the pelvis position in the sagittal plane on loads in the human musculoskeletal system
Autorzy:
Michnik, Robert
Zadoń, Hanna
Nowakowska-Lipiec, Katarzyna
Jochymczyk-Woźniak, Katarzyna
Myśliwiec, Andrzej
Mitas, Andrzej W.
Powiązania:
https://bibliotekanauki.pl/articles/27324108.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mathematical modeling
Anybody Modeling System
loads
lumbo-pelvic-hip complex
physiotherapy
physiopromotion
modelowanie matematyczne
system modelowania dla każdego
masa
kompleks lędźwiowo-miedniczo-biodrowy
fizjoterapia
fizjopromocja
Opis:
Purpose: The research work aimed to perform the mathematical modelling-based assessment concerning the effect of the position of the pelvis in the sagittal plane on loads present in the musculoskeletal system in the standing position. Methods: The analysis of the effect of various positions of the pelvis was performed using the Free Posture Model in the AnyBody Modeling System software. Simulated positions involving various values of pelvis inclination ranged from the extreme pelvic retroposition (–7°) through normative values (0–23°) to the extreme pelvic anteversion (33°). Results: The lowest resultant reaction forces in the intervertebral joints recorded for an angle of inclination restricted within the range of 9–27° and segment L5–S1 amounted to less than 0.7 BW. A change in the pelvic inclination from the normative values towards retroposition or anteversion resulted in the increased muscular activity of the erector spinae, transverse abdominal muscles as well as internal and external oblique muscles. Regarding the lower limbs, changes in the activity were observed in the biceps femoris muscle, iliac muscle, gluteus minimus, gluteus medius and the gluteus maximus. Conclusion: The results obtained in the research-related tests confirmed that the pelvic inclination affects loads present in the musculoskeletal system. The abovenamed results will be used to develop therapeutic exercises aimed to reduce loads present in the musculoskeletal system. The aforesaid exercises will be used to teach participants how to properly position their pelvis and how to activate individual groups of muscles.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 3; 33--42
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Human Performance Cognitive-Behavioral Modeling: A Benefit for Occupational Safety
Autorzy:
Gore, B. F.
Powiązania:
https://bibliotekanauki.pl/articles/89933.pdf
Data publikacji:
2002
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
modeling system safety
human performance modeling
human factors methodology
bezpieczeństwo pracy
badanie czynności
komputer
czynnik ludzki
wspomaganie komputerowe
modelowanie działań ludzkich
narzędzia informatyczne
Opis:
Human Performance Modeling (HPM) is a computer-aided job analysis software methodology used to generate predictions of complex human automation integration and system flow patterns with the goal of improving operator and system safety. The use of HPM tools has recently been increasing due to reductions in computational cost, augmentations in the tools’ fidelity, and usefulness in the generated output. An examination of an Air Man-machine Integration Design and Analysis System (Air MIDAS) model evaluating complex human-automation integration currently underway at NASA Ames Research Center will highlight the importance to occupational safety of considering both cognitive and physical aspects of performance when researching human error.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2002, 8, 3; 339-351
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and optimisation of vacuum collection system for cruise ship kitchen garbage
Autorzy:
Du, Jun
Li, Ruonan
Wu, Xin
Zhao, Hang
Powiązania:
https://bibliotekanauki.pl/articles/259756.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
kitchen waste vacuum collection
System modeling
Sorting algorithm
Model experiment
Opis:
Pollution of the marine environment by ship garbage is an urgent problem to be solved at home and abroad. The ship kitchen garbage vacuum collection system is a new environmental protection scheme for garbage disposal. It has many advantages, such as using a pipeline instead of manual operation, creating high-level sanitary conditions, realising completely closed garbage collection and transportation, eliminating cross-pollution, saving space and so on. In this paper, the system is modelled, and the calculation of pipeline pressure loss, the vacuum degree of the vacuum tank and the energy consumption of the system are briefly introduced. In order to reduce the energy consumption, an algorithm for the emptying and discharging port is presented. In order to solve the problem of optimising relevant parameters, the vacuum transport mechanism of garbage is studied based on an optimisation model of the pipe network, and the experimental platform of a simulation device is set up. In engineering, this is of great significance to the design of cruise ship garbage collection and treatment systems and the development of supporting technology.
Źródło:
Polish Maritime Research; 2020, 1; 152-161
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peirce, Sebeok, and the Semiotic Reformation on Contemporary Communications
Autorzy:
Magsino, Maria Asuncion L.
Powiązania:
https://bibliotekanauki.pl/articles/507250.pdf
Data publikacji:
2018-03-30
Wydawca:
International Étienne Gilson Society
Tematy:
language
communication
sign
signification
semiosis
Charles S. Peirce
Thomas A. Sebeok
modeling system
John Deely
postmodernism
suprasubjective nature of sign
modeling theory
truth
icon of reality
Opis:
Language in a broad sense becomes imperative for communication to ensue. Language considered as a system of signs and signification is achieved through a process involving sign relations, e.g. semiosis. Charles S. Peirce’s Theory of Signs can provide a basic framework for the elucidation of the intelligibility of signs. Furthermore, the ability for generating sign processes in an organized manner is determined by what Thomas A. Sebeok designates as an organism’s modeling capacity. Modeling capacities range from primitive to complex, thus generating three orders of language corresponding to language as a Primary Modeling System (PMS), a Secondary Modeling System (SMS) and a Tertiary Modeling System (TMS). This Peirce-Sebeok framework for communication, which John Deely places as “postmodern,” is premised upon what he designates as the suprasubjective nature of sign relations and their equally suprasubjective function. Thus, Sebeok’s Modeling Theory together with Peirce’s doctrine on the nature and behavior of signs can be used to direct the generation as well as the interpretation of language systems in accordance with the ultimate norm of communication, that is, to reflect truth as an icon of reality.
Źródło:
Studia Gilsoniana; 2018, 7, 1; 11-31
2300-0066
Pojawia się w:
Studia Gilsoniana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Causality in models of thermal processes in ship engine rooms with the use of Bond Graph (BG) method
Autorzy:
Cichy, M.
Kneba, Z.
Kropiwnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/258502.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Bond Graph (BG) method
causality
ship engine room
energy system modeling
Opis:
With a single approach to modeling elements of different physical nature, the method of Bond Graph (BG) is particularly well suited for modeling energy systems consisting of mechanical, thermal, electrical and hydraulic elements that operate in the power system engine room. The paper refers to the earlier presented [2] new concept of thermal process modeling using the BG method. The authors own suggestions for determining causality in models of thermal processes created by the said concept were given. The analysis of causality makes it possible to demonstrate the model conflicts that prevent the placement of state equations which allows for the direct conduct of simulation experiments. Attention has been drawn to the link between the energy systems models of thermal processes with models of elements of different physical nature. Two examples of determining causality in models of complex energy systems of thermal elements have been presented. The firs relates to the electrical system associated with the process of heat exchange. The second is a model of the mechanical system associated with the thermodynamic process.
Źródło:
Polish Maritime Research; 2017, S 1; 32-37
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Loop-shaping h∞ control of an aeropendulum model
Autorzy:
Breganon, Ricardo
Alves, Uiliam Nelson L. T.
De Almeida, João Paulo L.S.
Ribeiro, Fernando S. F.
Mendonça, Marcio
Palácios, Rodrigo H. C.
Montezuma, Marcio A. F.
Powiązania:
https://bibliotekanauki.pl/articles/2106458.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
modelowanie dynamiczne
wahadło aerodynamiczne
sterowanie
dynamic system modeling
aeropendulum
H∞ control
Opis:
This work presents a mathematical model of an aeropendulum system with two sets of motors with propellers and the design and simulation of a loop-shaping h∞control for this system. In this plant, the objective is to control the angular position of the pendulum rod through the torque generated by the thrust of the motorized propellers at the end of the rod’s axis. The control design is obtained by first using feedback linearization and then designing the h∞ controller using the resulting linear system. For the control strategy validation, simulations were conducted in the Matlab/Simulink® environment, and the weighting functions for the h∞ controller were adjusted to obtain the desired performance and stability of the closed-loop system. The simulation results show the efficiency of the applied methodology.
Źródło:
International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 1--16
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formal notation of a logistic system model taking into consideration cargo stream transformations
Formalizacja zapisu modelu systemu logistycznego z uwzględnieniem przekształceń strumieni ładunków
Autorzy:
Wasiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/224349.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
systemy logistyczne
modelowanie systemów logistycznych
strumienie ładunków
logistic systems
system potential
logistic system modeling
Opis:
The modeling of logistic systems is a complex task. Specitic goals to be attained by the systems (mainly cargo stream form transformations) and the diversity of resources used within the systems are the main reasons. Therefore various models useful for the partial analyses of logistic systems have been devised. The author's approach to the formaI notation of a logistic system model proposed in this paper may be used as a basis to work out various classes of detailed (integrated) models. In addition to cargo stream time, form and location transformations, transformations of material and human resources used within logistic systems have also been taken into account in the proposed model.
Modelowanie systemów logistycznych stanowi złożone zagadnienie. Przyczyną tego jest specyfika zadań stawianych przed tymi systemami (głównie chodzi tu o transformacje strumieni ładunków ze względu na postać) oraz różnorodność zasobów, jakie mogą być w tych systemach wykorzystywane. Sprawia to, że konstruowane są różnorodne modele systemów logistycznych, które umożliwiają ich cząstkowe analizy. W artykule zaproponowano autorskie podejście do formalizacji zapisu modelu systemu logistycznego, który może być podstawą do opracowywania modeli szczegółowych (scalonych) różnych klas. W proponowanym modelu poza odwzorowaniem przekształceń strumieni ładunków ze względu na czas, postać oraz przestrzeń, w sposób szczegółowy przedstawiono odwzorowanie rzeczowych i ludzkich zasobów wykorzystywanych w systemach logistycznych.
Źródło:
Archives of Transport; 2011, 23, 1; 91-110
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
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