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Wyświetlanie 1-15 z 26
Tytuł:
OPC technology as an automated systems integration tool
Technologia OPC jako narzędzie integracji systemów zautomatyzowanych
Autorzy:
Karatayev, A.A..
Palshin, V.P.
Yarmuhamedova, Z.M.
Powiązania:
https://bibliotekanauki.pl/articles/407942.pdf
Data publikacji:
2014
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
OPC (OLE for Process Control)
automated control system (ACS)
component object model (COM)
SCADA system
OPC
system sterowania automatycznego
Component Object Model (COM)
system SCADA
Opis:
The paper features the application of the OPC technology in automated systems. It gives an insight into the considered technology and provides the prospects of the OPC technology development.
W artykule rozpatrzono możliwość zastosowania technologii OPC w systemach zautomatyzowanych. Dokonano przeglądu tej technologii, a także określono perspektywy jej rozwoju.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2014, 1; 7-10
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reusable Object-Oriented Model
Autorzy:
Žácek, J.
Hunka, F.
Powiązania:
https://bibliotekanauki.pl/articles/384193.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
model object extension
LFLC software
Reusable Object
Oriented Model
Opis:
This paper analysis approaches and possibilities of executive model aimed to MDA approach. The second part of the article proposes guideline to create executive model, describes basic interactions to object oriented approach and shows possibilities of creating a core of executable model in Java programming language. Annotations are used for executive model object extension. Reflection concept is used for model execution and synchronization provides extended Petri net formalism defined in [1]. The model has been tested on LFLC software package developed by IRAFM, University of Ostrava to prove the whole concept.
Źródło:
e-Informatica Software Engineering Journal; 2013, 7, 1; 35-44
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation Model of Container Land Terminals
Autorzy:
Kuznetsov, A. L.
Kirichenko, A. V.
Eglit, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/116236.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine simulations
simulation model
container land terminals
container terminal
transport infrastructure
object-oriented model
terminal simulation
container
Opis:
The simulation as a tool for the design of port and terminals has emerged as an answer for the demand to enhance the quality and reliability of the project results. Very high costs of the project solution implementation and practically total lack of liquidity of transport infrastructure objects always induced the immense commercial risks in the terminal business. Lately these risks have multiplied significantly due to rapid changes on the global and regional markets of transport services. Today, many experts come to see this volatility as an indicator of the next phase in development of the global trade system and the derivative cargo transportation system, specifically the state of temporal saturation. The shift of the global goods volumes from quick and steady growth to relatively small fluctuations around constant values causes quick oscillations in re-distribution of demand over the oversized supply. This new business and economic environment seriously affected the paradigm of transport terminal design and development techniques. The new operational environment of terminals put a request for the designers to arrange the results not in terms of “point”, but in terms of “functions”. Eventually it resulted in development of the modern object-oriented model approach. The wide spread of this approach witnesses the objective demand for this discipline, while in many aspects it remains in the intuitive (pre-paradigmal) phase of its development. The main reason for it is in the problem definition itself, which usually is formulated as the simulation of a given terminal. At the same time, the task is to assess the operational characteristics of the terminal engaged in processing of a given combination of cargo flows. Consequently, it is not the terminal that should be simulated, but the processes of cargo flows handling performed by this terminal under investigation. Another problem that restricts the practical spread of simulation is in the model adequacy. A model which adequacy is not proved has no gnoseological value at all. The paper describes the approach aimed at development of the models with the features discussed above.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 2; 321-326
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of ship neural domain shape on safe and optimal trajectory
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/24201475.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
artificial neural network model
method for optimization
dynamic programming method
ship safety domain
safe ship control
path planning
multi-object decision model
computer simulation
Opis:
This article presents the task of safely guiding a ship, taking into account the movement of many other marine units. An optimally neural modified algorithm for determining a safe trajectory is presented. The possible shapes of the domains assigned to other ships as traffic restrictions for the particular ship were subjected to a detailed analysis. The codes for the computer program Neuro-Constraints for generating these domains are presented. The results of the simulation tests of the algorithm for a navigational situation are presented. The safe trajectories of the ship were compared at different distances, changing the sailing conditions and ship sizes.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 185--191
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the cross-border area regions potential for the development of intermodal transport
Autorzy:
Dohn, Katarzyna
Przybylska, Edyta
Żebrucki, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/409308.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
cross-border areas
potential of the region
intermodal transport
synthetic indicator of the region's potential evaluation
model object
Opis:
The aim of the article is to assess the potential of regions of the cross-border area for the development of intermodal freight transport. The discussed cross-border area includes two voivodeships - Silesia and Opole. The choice of regions is dictated by research into the strategy of international freight transport development covering three countries - Poland, the Czech Republic and Slovakia. Separated territories (Moravian-Silesian Region, Silesia and Opolskie Voivodship, Localgovernment Country of Žilina) of these countries are part of the European Grouping of Territorial Cooperation - EGTC TRITIA. The analysis and assessment of potential is based on a series of reports, CSO data, expert opinions and a synthetic indicator of the potential assessment of the region, based on the taxonomic scope of development. To determine it, a model object (region) was used in relation to which the potential of the analyzed regions of the cross-border area was assessed.
Źródło:
Research in Logistics & Production; 2019, 9, 1; 15-30
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Application of general model of moving object for tiltrotor stability analysis
Zastosowanie ogólnego modelu obiektu ruchomego do analizy stateczności tiltrotora
Autorzy:
Miller, M.
Narkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/212519.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
zastosowanie
ogólny model obiektu ruchomego
analiza stateczności tiltrotora
application
general model of moving object
tiltrotor stability analysis
Opis:
A computer model ofa tilt-rotor kas been developedfor calculating performance, simulating flight, and investiga-ting stability and control. The model is composed of a fuselage, wings, an empennage, engine nacelles and rotors. Tiltrotor eąuations ofmotion were obtained by summing up inertia, gravity and aerodynamic loads acting on eachpart ofthe aircraft. Aerodynamic loads at wings, empennage and rotor blades are calculated using ąuasisteady model. For rotor induced velocity the Glauert model is used. The influence of rotor inflow wing and empennage aerodynamic loads is calculated using actual value ofinduced velocity. The computer program of tiltrotor model is developed in MatLab environment. The subprograms for load calculation are supplemented by modules for calculation of trim states and stability and control matrices.
Opracowano symulacyjny model statku powietrznego typu tiltrotor dla potrzeb analizy osiągów, stabilności i sterowania oraz symulacji lotu. Model wiropłata złożony jest z kadłuba, skrzydeł, usterzenia ogonowego, gondoli silnikowych i wirników. Równania ruchu zostały uzyskane z sumowania obciążeń bezwładności, grawitacyjnych i aerodynamicznych działających na każdy element statku powietrznego. Obciążenia aerodynamiczne skrzydeł, stateczników i łopat wirników zostały obliczone z zastosowaniem ąuasistacjonarnego modelu opływu. Do wyznaczania prędkości indukowanej wirników zastosowano model Glauerta. Wpływ na-czany z wykorzystaniem aktualnej wartości prędkości indukowanej. Program do modelowania wiropłata został opracowany w środowisku MatLab. Program złożony jest z modułów służących do obliczeń obciążeń poszczególnych elementów wiropłata, które wykorzystywane są również do wyznaczania warunków stanów ustalonych, stateczności i macierzy sterowania. Podczas pierwszego etapu badań wyznaczono warunki lotu ustalonego wiropłata typu tiltrotor w różnych konfiguracjach co pozwoliło zbadać zachowanie i potwierdzić poprawność modelu.
Źródło:
Prace Instytutu Lotnictwa; 2006, 1-2 (184-185); 193-197
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bezier curves in modeling the shapes of biological objects
Krzywe Beziera w modelowaniu kształtu obiektów biologicznych
Autorzy:
Mieszkalski, L.
Powiązania:
https://bibliotekanauki.pl/articles/56322.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Bezier curve
modelling
biological object
mathematical model
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2014, 64 Agric.Forest Eng.
0208-5712
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Neural Network Model for Object Mask Detection in Medical Images
Autorzy:
Tereikovskyi, Igor
Korchenko, Oleksander
Bushuyev, Sergey
Tereikovskyi, Oleh
Ziubina, Ruslan
Veselska, Olga
Powiązania:
https://bibliotekanauki.pl/articles/2200721.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
model
neural network
object mask
medical images
Opis:
In modern conditions in the field of medicine, raster image analysis systems are becoming more widespread, which allow automating the process of establishing a diagnosis based on the results of instrumental monitoring of a patient. One of the most important stages of such an analysis is the detection of the mask of the object to be recognized on the image. It is shown that under the conditions of a multivariate and multifactorial task of analyzing medical images, the most promising are neural network tools for extracting masks. It has also been determined that the known detection tools are highly specialized and not sufficiently adapted to the variability of the conditions of use, which necessitates the construction of an effective neural network model adapted to the definition of a mask on medical images. An approach is proposed to determine the most effective type of neural network model, which provides for expert evaluation of the effectiveness of acceptable types of models and conducting computer experiments to make a final decision. It is shown that to evaluate the effectiveness of a neural network model, it is possible to use the Intersection over Union and Dice Loss metrics. The proposed solutions were verified by isolating the brachial plexus of nerve fibers on grayscale images presented in the public Ultrasound Nerve Segmentation database. The expediency of using neural network models U-Net, YOLOv4 and PSPNet was determined by expert evaluation, and with the help of computer experiments, it was proved that U-Net is the most effective in terms of Intersection over Union and Dice Loss, which provides a detection accuracy of about 0.89. Also, the analysis of the results of the experiments showed the need to improve the mathematical apparatus, which is used to calculate the mask detection indicators.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 1; 41--46
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peculiarities of technical object’s safety level evaluation
Autorzy:
Korostil, J.
Powiązania:
https://bibliotekanauki.pl/articles/360587.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
risk
safety
model
environment
malfunction
technical object
Opis:
In this work is developed method of evaluation safety level, which decreases with floating intensity functioning during technical object. Factors, condition such changes were reviewed. Basing on proposed methodic of detection of various types of risks exists possibility to form constructive algorithms of evaluation of safety level, which allows forming adequate danger counteraction means. One of basic factors, representing dangers, is malfunctions, appearing on technical object.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 40 (112); 100-104
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Initial model of transport means availability of real city transport system
Autorzy:
Woropay, M.
Migawa, K.
Bojar, P.
Powiązania:
https://bibliotekanauki.pl/articles/242151.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
city transport system
Markov's model
technical object
Opis:
The article presents a determination method of transport means service ability in a real city transport system. The considerations have been demonstrated on the basis of a real city bus transport system in a chosen agglomeration. The executive subsystem consisting of elementary subsystems of the type human - technical object (operator - transport means) whose service ability and reliability have a direct influence on capability to perform the transport task is directly responsible for accomplishment of the city transport system tasks. In order to develop a model of means of transport serviceability there were determined significant states of the operational use process and there was made a division and reduction of the number of states in terms of the availability criterion. On this basis, an event model of the process of transport means operational use, and then a mathematical model of this process, were built with the assumption that its model is a homogenous Markov 's process X(t). Next, boundary values of availability coefficient for the distinguished availability levels of transport means used in the city transport system were determined for operational data obtained from a real city bus transport system. The discussed model for determination of transport means availability is an initial one, developed on the basis of a nine-state model of operational use. In further part of the paper, there will be developed a resultant model of transport means availability determination (semi-Markov 's sixteen-state model), being a component of a wider, decision model for creation and assessment of transport means availability.
Źródło:
Journal of KONES; 2009, 16, 2; 495-502
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Features of protection of technical objects against negative exposure
Autorzy:
Korostil, J.
Powiązania:
https://bibliotekanauki.pl/articles/114248.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
attack
prognosis
security system
model
technical object
tools
Opis:
This paper presents research of different classes of attacks against complex technical objects. Attacks are differentiated into different classes on the basis of analysis of attack features which reflect the possible methods of attack interaction with the security system. The developed methods of formal description of attacks and defense methods on the level of their logical approximation allow describing tasks of withstanding attacks for defense tools with enough certainty. Thanks to the proposed interpretation of attack interaction with a defense object and defense tools, it has become possible to determine approaches to the extension of the defense system by adding new tools oriented towards withstanding new attacks.
Źródło:
Measurement Automation Monitoring; 2016, 62, 7; 234-237
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using text models in navigation
Autorzy:
Korostil, O. Y.
Korostil, Y. M.
Powiązania:
https://bibliotekanauki.pl/articles/360424.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
navigation
text model
landmark
semantic parameters
moving object
Opis:
In this work are described and researched methods of protection of navigation system from unauthorized attempts to substitute trajectory of moving objects, guided by radio or satellite. The proposed methodology to detect such interference in the operation of the navigation system is based on the use of data for historical, located on the premises trajectory.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 38 (110); 45-49
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-Markovian models of the process of technical state changes of technical objects
Autorzy:
Girtler, J.
Powiązania:
https://bibliotekanauki.pl/articles/259191.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
model
technical object
semi-Marcovian process
technical state
Opis:
The most important problem of operation of all technical objects (devices) is the problem of rational (optimum) decision control of the process of technical state changes of the objects. Such control can be realized when a model of the process of technical stale chanŹges is applied. In view of this, a formal description of the operational process of technical objects was presented in this paper, as well as it was justified that the model of the process may be a semi-Markovian process of finite set of states. Examples of 4-and 3-state semiŹ-Markovian process were given as a model of the above mentioned process of state chanŹges of any device. Difficulties associated with forming such model, which arise from application of the theory of semi-Markovian processes, were indicated. Therefore the proposed model is the semi-Markovian process whose values are technical states occurring in the phase of operation of many technical objects of practical importance (e.g. combustion piston engines, turbines, displacement and rotary compressors, impeller pumps etc).
Źródło:
Polish Maritime Research; 2004, 4; 3-7
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The abilities and the use of AutoCAD and its place in the educational process
Autorzy:
RÓŻOWICZ, MARIUSZ
MOLGA, AGNIESZKA
Powiązania:
https://bibliotekanauki.pl/articles/455803.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rzeszowski
Tematy:
object
integrated data model
computer aided design
technology
Opis:
AutoCAD system is commonly available software which forms the basis for computer aided design and is a significant work tool for engineers, designers or constructors. This article attempts to present the system of computer-aided design.
Źródło:
Edukacja-Technika-Informatyka; 2016, 7, 2; 128-133
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From exploratory research to structural models: A multilevel lexical approach to studying the image of marketing objects
Autorzy:
Kolańska-Stronka, Magdalena
Gorbaniuk, Oleg
Wilczewski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1374223.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
structural model
image
marketing object
lexical research
multilevel approach
Opis:
The key problem in studies of marketing objects (e.g., brands, political parties) is the lack of agreement on the universal dimensions through which such objects are perceived, as well as on methodologies allowing their identification. As a result, researchers often use structural models (and instruments) that lack ecological validity. We offer a solution to that problem by presenting a methodology that draws on lexical research and which has allowed researchers to establish universal dimensions of personality perception in psychology. By discussing the theoretical and methodological tenets of the multilevel lexical approach to exploring images of marketing objects, we also overcome another problem of neglecting the hierarchical structure of the phenomena and data.
Źródło:
Przegląd Wschodnioeuropejski; 2020, XI, 2; 131-143
2081-1128
Pojawia się w:
Przegląd Wschodnioeuropejski
Dostawca treści:
Biblioteka Nauki
Artykuł
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