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Tytuł:
A 4-D chaotic hyperjerk system with a hidden attractor, adaptive backstepping control and circuit design
Autorzy:
Vaidyanathan, S.
Jafari, S.
Pham, V.-T.
Azar, A. T.
Alsaadi, F. E.
Powiązania:
https://bibliotekanauki.pl/articles/229776.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
chaotic systems
hyperjerk systems
hidden attractors
adaptive control
backstepping control
circuit design
Opis:
A novel 4-D chaotic hyperjerk system with four quadratic nonlinearities is presented in this work. It is interesting that the hyperjerk system has no equilibrium. A chaotic attractor is said to be a hidden attractor when its basin of attraction has no intersection with small neighborhoods of equilibrium points of the system. Thus, our new non-equilibrium hyperjerk system possesses a hidden attractor. Chaos in the system has been observed in phase portraits and verified by positive Lyapunov exponents. Adaptive backstepping controller is designed for the global chaos control of the non-equilibrium hyperjerk system with a hidden attractor. An electronic circuit for realizing the non-equilibrium hyperjerk system is also introduced, which validates the theoretical chaotic model of the hyperjerk system with a hidden chaotic attractor.
Źródło:
Archives of Control Sciences; 2018, 28, 2; 239-254
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comprehensive Framework of Design Thinking Approach in Knowledge Management: A Review in Academic Context
Autorzy:
Mostofa, Sk Mamun
Othman, Roslina
Mukherjee, Debarshi
Hasan, Khandakar Kamrul
Powiązania:
https://bibliotekanauki.pl/articles/628331.pdf
Data publikacji:
2020
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
KM, DT, design knowledge, knowledge sharing, educational institutions, design systems.
Opis:
Aim of research. Design thinking (DT) is an essential context for knowledge management (KM), as it promotes the link between KM initiatives and an organization's strategic goals and objectives. This article analyzes the DT process in terms of its capability to create KM. The detailed analysis on the aspect of the working mechanism of DT – how KM is represented and created in the process. This article examines the DT procedure in terms of its ability to generate design knowledge. In this regard, the main purpose of this paper is to review the approaches to KM applied to DT and to suggest directions for how such a supervisory system could evolve. Methodology. This study is thematic in its nature and it was prepared on the basis of secondary data and also based on an inclusive review of the literature and similarly computation of secondary information. To formulate this paper the researchers used books, earlier published articles, conference papers, and numerous research reports. Results and conclusions. This article concludes by proposing an intuitive model for DT and KM. KM for its successful application in higher learning institutions in the areas of course design institutional strategy formation and faculty resource sharing.
Źródło:
Journal of Education Culture and Society; 2020, 11, 2; 281-294
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Model to Analyze Ergonomics Working Conditions
Autorzy:
Ghahramani, B.
Powiązania:
https://bibliotekanauki.pl/articles/91107.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ergonomics
work environment design
systems engineering
developing nations
ergonomia
środowisko pracy
inżynieria systemów
kraje rozwijające się
Opis:
An ergonomics and safety model to assess and evaluate the most critical industrial improvement areas in a developing nation. This study was initiated and supported by a Fortune 500 Corporation interested in improving its global operations in developing nations. This initiative was also fully supported by an emerging nation that was concerned with its ergonomics and safety problems. The model was tested and validated in the emerging nation and the results were used to further enhance the model so that it can be implemented and adapted to other similar work environments. The model provides a practical methodology that analyzes and evaluates an emerging nation’s current work environments, suggests practical solutions, and recommends effective remedies.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 2; 223-236
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new 4-D dynamical system exhibiting chaos with a line of rest points, its synchronizationand circuit model
Autorzy:
Vaidyanathan, Sundarapandian
Sambas, Aceng
Zhang, Sen
Powiązania:
https://bibliotekanauki.pl/articles/229283.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
chaotic systems
circuit design
synchronization
Opis:
A new 4-D dynamical system exhibiting chaos is introduced in this work. The proposed nonlinear plant with chaos has an unstable rest point and a line of rest points. Thus, the new nonlinear plant exhibits hidden attractors. A detailed dynamic analysis of the new nonlinear plant using bifurcation diagrams is described. Synchronization result of the new nonlinear plant with itself is achieved using Integral Sliding Mode Control (ISMC). Finally, a circuit modelusing MultiSim of the new 4-D nonlinear plant with chaos is carried out for practical use.
Źródło:
Archives of Control Sciences; 2019, 29, 3; 485-506
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new 4-D hyperchaotic four-wing system, its bifurcation analysis, complete synchronization and circuit simulation
Autorzy:
Vaidyanathan, Sundarapandian
Benkouider, Khaled
Sambas, Aceng
Safaan, Samy Abdelwahab
Powiązania:
https://bibliotekanauki.pl/articles/2175110.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multistability
Hyperchaos
four-wing systems
hyperchaotic systems
synchronization
sliding mode control
circuit design
Opis:
In this work, we modify the dynamics of 3-D four-wing Li chaotic system (Li et al. 2015) by introducing a feedback controller and obtain a new 4-D hyperchaotic four-wing system with complex properties. We show that the new hyperchaotic four-wing system have three saddle-foci balance points, which are unstable. We carry out a detailed bifurcation analysis for the new hyperchaotic four-wing system and show that the hyperchaotic four-wing system has multistability and coexisting attractors. Using integral sliding mode control, we derive new results for the master-slave synchronization of hyperchaotic four-wing systems. Finally, we design an electronic circuit using MultiSim for real implementation of the new hyperchaotic four-wing system.
Źródło:
Archives of Control Sciences; 2022, 32, 3; 507--534
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new 4-D hyperchaotic system with no equilibrium, its multistability, offset boosting and circuit simulation
Autorzy:
Vaidyanathan, Sundarapandian
Moroz, Irene M.
Sambas, Aceng
Powiązania:
https://bibliotekanauki.pl/articles/229944.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
chaotic systems
hidden attractors
sliding mode control
circuit design
synchronization
Opis:
A new 4-D dynamical system with hyperchaos is reported in this work. It is shown that the proposed nonlinear dynamical system with hyperchaos has no equilibrium point. Hence, the new dynamical system exhibits hidden hyperchaotic attractor. An in-depth dynamic analysis of the new hyperchaotic system is carried out with bifurcation transition diagrams, multistability analysis, period-doubling bubbles and offset boosting analysis. Using Integral Sliding Mode Control (ISMC), global hyperchaos synchronization results of the new hyperchaotic system are described in detail. Furthermore, an electronic circuit realization of the new hyperchaotic system has been simulated in MultiSim software version 13.0 and the results of which are in good agreement with the numerical simulations using MATLAB.
Źródło:
Archives of Control Sciences; 2020, 30, 3; 575-597
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new chaotic system with axe-shaped equilibrium, its circuit implementation and adaptive synchronization
Autorzy:
Vaidyanathan, S.
Sambas, A.
Mamat, M.
Powiązania:
https://bibliotekanauki.pl/articles/230023.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
chaotic systems
curve equilibrium
Lyapunov exponents
circuit design
synchronization
Opis:
In the recent years, chaotic systems with uncountable equilibrium points such as chaotic systems with line equilibrium and curve equilibrium have been studied well in the literature. This reports a new 3-D chaotic system with an axe-shaped curve of equilibrium points. Dynamics of the chaotic system with the axe-shaped equilibrium has been studied by using phase plots, bifurcation diagram, Lyapunov exponents and Lyapunov dimension. Furthermore, an electronic circuit implementation of the new chaotic system with axe-shaped equilibrium has been designed to check its feasibility. As a control application, we report results for the synchronization of the new system possessing an axe-shaped curve of equilibrium points.
Źródło:
Archives of Control Sciences; 2018, 28, 3; 443-462
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new methodology for designing and development of complex systems for high energy physics
Autorzy:
Makowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/397800.pdf
Data publikacji:
2016
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
design methodology
high energy physics
large scale systems
electronic systems
AdvancedTCA
MicroTCA
reliability
availability
serviceability
low level radio frequency control system
image acquisition system
metodologia projektowania
fizyka wysokich energii
systemy wielkiej skali
układy elektroniczne
Advanced Telecommunications Computing Architecture
Micro Telecommunications Computing Architecture
niezawodność
gotowość
podatność obsługowa
radioelektroniczny niskopoziomowy system sterowania
akwizycja obrazów
Opis:
The paper describes a new methodology that allows to design scalable complex control and data acquisition systems taking into consideration the additional, non-functional requirements of High-Energy Physics (HEP). Electronic systems applied in HEP often operate in difficult conditions. Access to such devices is difficult or even impossible. The HEP systems require high availability, serviceability and upgradeability. The operating conditions of these systems are even more difficult than for telecommunication devices. Therefore, a different methodology should be applied than for classical telecommunication systems, when designing electronics used in high-energy physics applications. Electronic systems also need a suitable hardware platform that not only assures high availability, simplifies maintenance and servicing but also allows to use mixed analogue-digital signals. The author made an attempt to develop a new methodology suitable for designing of complex data acquisition and control systems of HEP. The Low Level RF (LLRF) system of European Free Electron Laser (EXFEL) and Image Acquisition System (IAS) prototype developed for International Thermonuclear Experimental Reactor (ITER) tokamak are presented as examples of complex electronic systems that were designed according to the proposed methodology.
Źródło:
International Journal of Microelectronics and Computer Science; 2016, 7, 4; 123-132
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new multistable double-scroll 4-D hyperchaotic system with no equilibrium point, its bifurcation analysis, synchronization and circuit design
Autorzy:
Vaidyanathan, Sundarapandian
He, Shaobo
Simbas, Aceng
Powiązania:
https://bibliotekanauki.pl/articles/1409110.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hyperchaos
hyperchaotic systems
hidden attractors
multistability
sliding mode control
circuit design
Opis:
In this work, we have developed a new 4-D dynamical system with hyperchaos and hidden attractor. First, by introducing a feedback input control into the 3-D Ma chaos system (2004), we obtain a new 4-D hyperchaos system with no equilibrium point. Thus, we derive a new hyperchaos system with hidden attractor. We carry out an extensive bifurcation analysis of the new hyperchaos model with respect to the three parameters. We also carry out probability density distribution analysis of the new hyperchaotic system. Interestingly, the new nonlinear hyperchaos system exhibits multistability with coexisting attractors. Next, we discuss global hyperchaos self-synchronization for the new hyperchaos system via Integral Sliding Mode Control (ISMC). As an engineering application, we realize the new 4-D hyperchaos system with an electronic circuit via MultiSim. The outputs of the MultiSim hyperchaos circuit show good match with the numerical MATLAB plots of the hyperchaos model. We also analyze the power spectral density (PSD) of the hyperchaos of the state variables using MultiSim.
Źródło:
Archives of Control Sciences; 2021, 31, 1; 99-128
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new multistable jerk chaotic system, its bifurcation analysis, backstepping control-based synchronization design and circuit simulation
Autorzy:
Vaidyanathan, Sundarapandian
Benkouider, Khaled
Sambas, Aceng
Powiązania:
https://bibliotekanauki.pl/articles/2106506.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
jerk systems
bifurcation
multistability
attractors
backstepping control
circuit design
Opis:
In this work, we present results for a new dissipative jerk chaotic system with three quadratic terms in its dynamics.We describe the bifurcation analysis for the new jerk system and also show that the proposed system exhibits multi-stability. Next, we describe a backstepping control-based synchronization design for a pair of new jerk chaotic systems. MATLAB simulations are put forth to exhibit the various findings in this work. Furthermore, we exhibit a circuit simulation for the new jerk system using MultiSim.
Źródło:
Archives of Control Sciences; 2022, 32, 1; 123--152
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel generalized net model of the executive compensation design
Autorzy:
Atanassov, K. T.
Kacprzyk, A.
Sotirova, E.
Powiązania:
https://bibliotekanauki.pl/articles/384463.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
rewards systems
compensation design
banking activities
corporate activities
Generalized Net
modelling
Discrete Event System Modeling
Opis:
In the paper we are concerned with a structured approach to the process of design of an executive compensation system in a company which is one of most relevant issues in corporate economics that can have a huge impact on a company, with respect to finances, competitiveness, etc. More specifically, we present a novel application of Atanassov’s concept of a Generalized Net (GN) which is a powerful tool for the representation and handling of dynamic discrete event problems and systems. First, to present the problem specifics, a broader Total Reward system is discussed together with the importance of proper structuring of the compensation system for executives to support company’s goals, allowing attracting, motivating and retaining managers. The proposed compensation design model starts from incorporating a broad spectrum of benchmarks, expectations and constraints to those already incorporated in the early phase of the design of the executive compensation. In the design and testing phase a significant emphasis is placed on the flexibility and adjustability of the executive compensation package to external factors by testing, dynamically adjusting and stress testing the proposed compensation package already in the design phase. Then, we apply some elements of the theory of Generalized Nets (GNs) to construct the model of executive compensation design using the proposed approach.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 3; 64-74
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active Learning Innovations in Knowledge Management Education Generate Higher Quality Learning Outcomes
Autorzy:
Shelley, Arthur
Powiązania:
https://bibliotekanauki.pl/articles/475129.pdf
Data publikacji:
2014
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
knowledge
learning
education
systems thinking
design thinking
active learning interdependence
wiki
Opis:
Innovations in how a postgraduate course in knowledge management is delivered have generated better learning outcomes and made the course more engaging for learners. Course participant feedback has shown that collaborative active learning is preferred and provides them with richer insights into how knowledge is created and applied to generate innovation and value. The course applies an andragogy approach in which students collaborate in weekly dialogue of their experiences of the content, rather than learn the content itself. The approach combines systems thinking, learning praxis, and active learning to explore the interdependencies between topics and how they impact outcomes in real world situations. This has stimulated students to apply these ideas in their own workplaces.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2014, 10, 1; 129-146
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced modelling and luminance analysis of LED optical systems
Autorzy:
Słomiński, S.
Powiązania:
https://bibliotekanauki.pl/articles/200561.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
luminance distribution
luminance modelling
LED
optical systems design
Opis:
Designing, optimizing and analyzing optical systems as part of the implementation process into production of modern luminaires require using advanced simulation and computational methods. The progressive miniaturization of LED (light emitting diode) chips and growth in maximum luminance values, achieving up to 108 cd/m2, require constructing very accurate geometries of reflector and lens systems producing complex luminous intensity distributions while reducing discomfort glare levels. Currently, the design process cannot function without advanced simulation methods. Today’s simulation methods in the lighting technology offer very good results as far as relatively large conventional light sources such as halogen lamps, metal halide lamps and high pressure sodium lamps are concerned. Unfortunately, they often fail in the case of chip-on-board LED light sources whose luminous surface dimensions are increasingly often contained inside a cube of the side length below 1mm. With the high sensitivity of such small chips and lenses with dimensions ranging from a just a few to between 10 and 20 mm, which is presented in this paper, modern luminance distribution measurement methods, luminance modelling and ray tracing methods should be used to minimize any errors arising from incorrectly projecting the design in the final physical model. Also, very importantly, focus should be directed towards reducing a chance of making a mistake while collimating the position of the light source inside the optical system. The paper presents a novel simulation calculation method enriched with an analysis of optical system sensitivity to a light source position. The results of simulation calculations are compared with the results of laboratory measurements for corresponding systems.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1107-1116
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm for searching out similar ships within expert system of computer aided preliminary design of ship power plant
Autorzy:
Meler-Kapcia, M.
Powiązania:
https://bibliotekanauki.pl/articles/259942.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
artificial intelligence
expert systems
similarity functions
CBR method
multicriterial optimization
optimization
ship design aiding
Opis:
This paper presents an algorithm for searching out similar ships, implemented in a hybrid system for aiding preliminary design of ship power plant, based on new similarity functions as well as those adapted from literature sources. For searching out similar ships a multicriterial optimization method of weighed profits was applied.
Źródło:
Polish Maritime Research; 2008, 3; 92-96
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An observer design for Takagi-Sugeno fuzzy bilinear control systems
Autorzy:
Delmotte, François
Hadj Taieb, Nizar
Hammami, Mohamed Ali
Meghnafi, Houria
Powiązania:
https://bibliotekanauki.pl/articles/27314670.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
fuzzy systems
bilinear systems
stability analysis
observer design
Opis:
In this paper, the observer design problem for a T-S fuzzy bilinear control system is investigated. First, an observer of Kalman type is designed to estimate the system states for the linear case. Then, some new sufficient conditions are derived to show the exponential convergence of the solutions of the error equation for fuzzy bilinear systems. Furthermore, we consider some uncertainties of the system that are bounded and satisfy a certain condition where an observer is designed. Moreover, an application to Van de Vusse system is given.
Źródło:
Archives of Control Sciences; 2023, 33, 3; 631--649
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 115

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