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Wyświetlanie 1-15 z 88
Tytuł:
A Novel System Architecture for an Improved Self-care Solution – Conceptual Design and Key Components
Autorzy:
Santos, Patrick
Ramos, Jorge
Seabra, Eduardo
Castro, José
Powiązania:
https://bibliotekanauki.pl/articles/1839314.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
adaptive interfaces
big data analytics
data mining
user profiling
Opis:
The high penetration rate that mobile devices enjoy in to day’s society has facilitated the creation of new digital services, with those offered by operators and content providers standing out. However, even this has failed to encourage consumers to express positive opinions on telecommunication services, especially when compared with other sectors. One of the main reasons of the mistrust shown is the low level of quality of customer service provided an area that generates high costs for the operators themselves, due to the high number of people employed at call centers in order to handle the volume of calls received. To face these challenges, operators launched self-care applications in order to provide customers with a tool that would allow them to autonomously manage the services they have subscribed. In this paper, we present an architecture that provides customized information to customers – a solution that is separate from mobile operating systems and communication technologies.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 4; 88-97
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adaptive backstepping control, synchronization and circuit simulation of a 3-D novel jerk chaotic system with two hyperbolic sinusoidal nonlinearities
Autorzy:
Vaidyanathan, S.
Volos, C.
Pham, V.-T.
Madhavan, K.
Idowu, B. A.
Powiązania:
https://bibliotekanauki.pl/articles/230036.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
jerk system
novel system
adaptive control
backstepping control
chaos synchronization
Opis:
In this research work, a six-term 3-D novel jerk chaotic system with two hyperbolic sinusoidal nonlinearities has been proposed, and its qualitative properties have been detailed. The Lyapunov exponents of the novel jerk system are obtained as L1 = 0.07765,L2 = 0, and L3 = −0.87912. The Kaplan-Yorke dimension of the novel jerk system is obtained as DKY = 2.08833. Next, an adaptive backstepping controller is designed to stabilize the novel jerk chaotic system with two unknown parameters. Moreover, an adaptive backstepping controller is designed to achieve complete chaos synchronization of the identical novel jerk chaotic systems with two unknown parameters. Finally, an electronic circuit realization of the novel jerk chaotic system using Spice is presented in detail to confirm the feasibility of the theoretical model.
Źródło:
Archives of Control Sciences; 2014, 24, 3; 375-403
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis, adaptive control and circuit simulation of a novel finance system with dissaving
Autorzy:
Tacha, O. I.
Volos, C. K.
Stouboulos, I. N.
Kyprianidis, I. M.
Powiązania:
https://bibliotekanauki.pl/articles/229959.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaotic finance system
dissaving
bifurcation diagram
Lyapunov exponent
phase portrait
adaptive control
nonlinear circuit
Opis:
In this paper a novel 3-D nonlinear finance chaotic system consisting of two nonlinearities with negative saving term, which is called ‘dissaving’ is presented. The dynamical analysis of the proposed system confirms its complex dynamic behavior, which is studied by using wellknown simulation tools of nonlinear theory, such as the bifurcation diagram, Lyapunov exponents and phase portraits. Also, some interesting phenomena related with nonlinear theory are observed, such as route to chaos through a period doubling sequence and crisis phenomena. In addition, an interesting scheme of adaptive control of finance system’s behavior is presented. Furthermore, the novel nonlinear finance system is emulated by an electronic circuit and its dynamical behavior is studied by using the electronic simulation package Cadence OrCAD in order to confirm the feasibility of the theoretical model.
Źródło:
Archives of Control Sciences; 2016, 26, 1; 95-115
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrydowy system magazynowania energii fotowoltaicznej
Novel supercapacitor storage system
Autorzy:
Harasimczuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/377211.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
magazynowanie energii
superkondensator
panel fotowoltaiczny
Opis:
W artykule przedstawiono oraz opisano hybrydowy system zarządzania energią pozyskaną z paneli fotowoltaicznych. W systemie tym jako magazyny energii zostaną wykorzystane akumulatory oraz superkondensatory. Zostanie omówiona zasada sterowania przepływem energii pomiędzy poszczególnymi elementami systemu umożliwiająca zachowanie pracy panelu fotowoltaicznej w maksymalnym punkcie mocy przy jednoczesnym niewielkim wpływie systemu na jakość energii w sieci energetycznej. W artykule zaprezentowano nowy sposób zarządzania magazynowaniem energii fotowoltaicznej umożliwiający zmniejszenie wagi magazynów przy zachowaniu pierwotnej wydajności systemu.
The paper presents hybrid energy storage system extracted from photovoltaic panels. Presented storage system used batteries and supercapacitors. The control of the flow energy between the elements of the systems has been discussed. Maintained the work of photovoltaic panel in maximum power point while low impact of storage system on power quality in the grid. The new way to mage storage energy has been proposed. The use supercapacitors enable to obtain a reduced weight energy storage elements while maintaining the original efficiency of the system. In this paper has been presented results of calculations of weight energy storage at different operating conditions. When the power load equaled 0.2 maximum power output of the photovoltaic panel in analyzed day reduced of weight storage elements from 547 kg to 437 kg has been achieved.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 87; 109-118
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research effects of novel combustion system with semi-open combustion chamber using rapid compression machine
Autorzy:
Leżański, T.
Sęczyk, J.
Wolański, P.
Powiązania:
https://bibliotekanauki.pl/articles/245605.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engines
spark ignition
combustion processes
engine combustion systems
combustion process visualization
Opis:
The combustion system with semi open combustion chamber (SOCC) was originally elaborated in Aircraft Engine Department of Warsaw University of Technology. In this system the original combustion chamber of the standard SI engine, was divided by partition in prechamber and main combustion chamber, but yet this division exists only when the piston is close to TDC, on the contrary by the rest of the cycle the chambers are fully open. The system operation mechanism, the visualization research results, the high speed changed of the pressure measurements, was presented in this paper. The influence on the system performances of the different combustion systems parameters: the prechamber volume, the nozzle hole diameter in the partition, the ignition place, the compression ratio, and the ignition advance angle (IAA), on the basis of the research results, using rapid compression machine was presented in this paper. All research results show, that the best results of the system operation can be obtained if the stream outflow from prechamber to main combustion chamber starts when the piston is at TDC, and if the stream energy will be so big to displace all main combustion chamber before the clearance between partition and piston crown was opened. If the system operated correctly, the combustion time shortening, the growth of the maximum cycle pressure, and the combustion efficiency increase were obtained.
Źródło:
Journal of KONES; 2014, 21, 4; 297-310
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combined modified function projective synchronization of different systems through adaptive control
Autorzy:
Almohammadi, N. A.
Alzahrani, E. O.
El-Dessoky, M. M.
Powiązania:
https://bibliotekanauki.pl/articles/229808.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Modified Function Projective Synchronization
Novel Chaotic System
Four-Scroll Chaotic System
adaptive control
Opis:
This work describes a new study to achieve a combination of modified function projective synchronization between three different chaotic systems through adaptive control. Using the Lyapunov function theory, the asymptotic stability of the error dynamics is obtained and discussed. Further, we set some appropriate initial conditions for the state variables and assigning specific values to the parameters and obtain the graphical results, which shows the efficiencies of the new method. Finally, we summarized our work with conclusion and references.
Źródło:
Archives of Control Sciences; 2019, 29, 1; 133-146
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel ultrasonic distance measuring system based on correlation method
Autorzy:
Gądek, K.
Jaraczewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/141521.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic measurements
non-destructive testing
delay measurement algorithm
phase correlation
Opis:
This paper presents an innovative method for measuring the time delay of ultrasonic waves. Pulse methods used in the previous studies was characterized by latency. The method of phase correlation, presented in this article is free from this disadvantages. Due to the phase encoding with the use of Walsh functions the presented method allows to obtain better precision than previous methods. The algorithm to measure delay of the reflected wave with the use of microprocessor ARM Cortex M4 linked to a PC has been worked out and tested. This method uses the signal from the ultrasonic probe to precisely determine the time delay, caused by the propagation in medium, possible. In order to verify the effectiveness of the method a part of the measuring system was implemented in LabVIEW. The presented method proved to be effective, as it is shown in presented simulation results.
Źródło:
Archives of Electrical Engineering; 2014, 63, 3; 385-392
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Development of Authentic Personality With Limitations Of The Educational System (in the examples of films: Professor Vujić’s Hat, directed by Z. Šotra, and Dead Poets Society, directed by P. Weir)
Autorzy:
JARANOVIĆ, JELENA
Powiązania:
https://bibliotekanauki.pl/articles/628103.pdf
Data publikacji:
2013
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
authenticity, identity, rigid school system, teacher roles, novel-based mo-vies, educational system
Opis:
This paper focuses on the urge of young people to find a purpose in their lives and make them more meaningful by insisting on the uniqueness of every individual. It is ba-sed on the analysis of two films: Professor Kosta Vujić’s Hat (directed by Zdravko Šotra, 2012; based on the novel by MilovanVitezović) and Dead Poets Society (by Peter Weir, 1989). This journey is made through resisting and ghting against rigid rules of the educational system. The metamorphosis is infiluenced by two extraordinary teachers who give their students motivation and support. We will also consider the role of a teacher in the modern society and the possibility to switch from an ordinary lecturer to an exceptional leader, who encourages these students to look at life from different perspectives by making them question common thinking patterns.
Źródło:
Journal of Education Culture and Society; 2013, 4, 2; 79-87
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel flexible micro assembly system: implementation and performance analysis
Autorzy:
Um, D.
Ryu, D.
Dong, B.
Foor, D.
Hawkins, K.
Powiązania:
https://bibliotekanauki.pl/articles/384367.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
flexible manufacturing
microassembly
micro 3D vision
Opis:
Demands for micro/nano products and assembly systems have been raised significantly to meet the ever complex technical needs for modern society. In this paper, we share the experiences and results of the study on the flexible micro assembly workcell focused primarily on a novel system implementation and system performance analysis. For flexible and autonomous assembly operations, we investigated a novel model based 3D depth measurement technology for faster and cost effective means to promote autonomous micro assembly systems in various industries. Micro parts, by its nature, are known of their shapes in advance for the majority of micro applications. We take advantage of the previously known shape of micro parts and hence apply a model based approach for a faster and cost effective localization and 3D depth measure of randomly loaded micro-parts on the workcell. The proposed 3D depth measuring method is based on the pattern recognition and multi-focus technique enabling it to extract only information useful for micro parts assembly for faster recognition. For demonstration purpose, silicon based oxide gears are fabricated by bulk micromachining and are used to study performance indices and to prove the usefulness of the proposed micro 3D depth measurement technology.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2010, 4, 3; 10-15
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Variable Structure Measurement System with Intelligent Components for Flight Vehicles
Autorzy:
Shen, K.
Selezneva, M. S.
Neusypin, K. A.
Proletarsky, A. V.
Powiązania:
https://bibliotekanauki.pl/articles/220386.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
flight vehicle
variable structure measurement system
degree of observability
self-organization algorithm
integrated navigation system
Opis:
The paper presents a method of developing a variable structure measurement system with intelligent components for flight vehicles. In order to find a distinguishing feature of a variable structure, a numerical criterion for selecting measuring sensors is proposed by quantifying the observability of different states of the system. Based on the Peter K. Anokhin’s theory of functional systems, a mechanism of “action acceptor” is built with intelligent components, e.g. self-organization algorithms. In this mechanism, firstly, prediction models of system states are constructed using self-organization algorithms; secondly, the predicted and measured values are compared; thirdly, an optimal structure of the measurement system is finally determined based on the results of comparison. According to the results of simulation with practical data and experiments obtained during field tests, the novel developed measurement system has the properties of high-accuracy, reliable operation and fault tolerance.
Źródło:
Metrology and Measurement Systems; 2017, 24, 2; 347-356
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated and deep learning–based social surveillance system : a novel approach
Autorzy:
Litoriya, Ratnesh
Ramchandani, Dev
Moyal, Dhruvansh
Bothra, Dhruv
Powiązania:
https://bibliotekanauki.pl/articles/27314204.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
Video Surveillance
object detection
object tracking
YOLO v4 algorithm
OpenCV
Opis:
In industry and research, big data applications are gaining a lot of traction and space. Surveillance videos contribute significantly to big unlabelled data. The aim of visual surveillance is to understand and determine object behavior. It includes static and moving object detection, as well as video tracking to comprehend scene events. Object detection algorithms may be used to identify items in any video scene. Any video surveillance system faces a significant challenge in detecting moving objects and differentiating between objects with same shapes or features. The primary goal of this work is to provide an integrated framework for quick overview of video analysis utilizing deep learning algorithms to detect suspicious activity. In greater applications, the detection method is utilized to determine the region where items are available and the form of objects in each frame. This video analysis also aids in the attainment of security. Security may be characterized in a variety of ways, such as identifying theft or violation of covid protocols. The obtained results are encouraging and superior to existing solutions with 97% accuracy.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 3; 30--39
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of a novel FPGA-based system for filtering audio signals using a finite impulse response filters
Autorzy:
Lipowski, Adrian
Majewski, Paweł
Pluta, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2055238.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
audio filtering
FIR filter
FPGA
signal processing
Opis:
In this article, an analysis of an innovative system for filtering signals in the audible range (16 Hz - 20 kHz) on programmable logic devices using a filters with a finite impulse response, is presented. Mentioned system was neat combination of software and hardware platform, where in the program layer a multiple programming languages including VHDL, JavaScript, Matlab or HTML were used to create completely useful application. To determine the coefficients of polynomial filters the Matlab Filter Design & Analysis Tool was used. Thanks to the developed graphic layer, a user-friendly interface was created, which allows easily transfer the required coefficients from the computer to the executive system. The practical implementation made on the FPGA platform, specifically on the Altera DE2- 115 development kit with the FPGA Cyclone IV, was compared with simulation realization of Matlab FIR filters. The performed research confirm the effectiveness of filtration in real time with up to 128th order of the filter for both audio channels simultaneously in FPGA-based system.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 1; 19--26
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogel microspheres containing dextran-based nanoparticles as novel anticancer drug delivery system
Autorzy:
Kulikowska-Darłak, Aleksandra
Stefanek, Agata
Wasiak-Wojasińska, Iga
Wiechecka-Ożdżyńska, Paulina
Ciach, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2202877.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alginate
dextran
nanoparticles
microspheres
drug delivery
alginian
dekstran
nanocząstki
mikrosfery
dostarczanie leków
Opis:
Developing an effective and safe cancer therapy could significantly reduce the number of deaths and improve the quality of life of treated patients. Nowadays medicine has developed a wide range of anticancer chemotherapeutics but at the same time there is a lack of effective drug delivery methods. Therefore, the development of the targeted drug delivery system which will selectively release drug into the cancer cells is a key challenge of modern medicine. The main aim of the presented research was to investigate the targeting effect of a drug delivery system based on the controlled release of dextran nanoparticles containing the anticancer drug – doxorubicin from the alginate microspheres coated with chitosan multilayers. During the research the physicochemical properties of the alginate microspheres and its stability in the physiological environment were investigated. Moreover, the kinetics of the nanoparticles with doxorubicin release from the alginate microspheres covered with chitosan multilayers was characterized, depending on the thickness of the chitosan layer. Further, the cytotoxicity study of the alginate microspheres covered with chitosan multilayer and containing nanoparticles was performed to determine the therapeutic effect of the released nanoparticles with doxorubicin on the HeLa cells during the in vitro cell culture.
Źródło:
Chemical and Process Engineering; 2022, 43, 3; 405--417
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel robotic system for remote ultrasonography - from an idea to the first prototype. Presentation of the ReMeDi project
Nowy system robotyczny do zdalnej ultrasonografii - od pomysłu do pierwszego prototypu. Prezentacja projektu ReMeDi
Autorzy:
Szczęśniak-Stańczyk, D.
Stańczyk, B.
Powiązania:
https://bibliotekanauki.pl/articles/2063844.pdf
Data publikacji:
2015
Wydawca:
Międzynarodowe Stowarzyszenie na rzecz Robotyki Medycznej
Tematy:
diagnostyka medyczna
ultrasonografia
system robotyczny
robot medyczny
prototyp
ReMeDi
medical diagnostics
ultrasound
robotic system
medical robot
prototype
Opis:
Nowadays the demand for specialized medical care becomes higher. Additionally increasing deficit of physician is observed in majority of countries worldwide. The solution for such a situation seems to be telemedicine. The ReMeDi project is aimed to developa robotic system for remote medical diagnostics, which can support physician by enhancing the (tele-) presence with intelligent cognitive autonomous features. This paper focuses on the interfaces of the ReMeDi system which are dedicated for remote ultrasonography and presents the work done during the two years of the project.
Zapotrzebowanie na specjalistyczną opiekę medyczną w dzisiejszych czasach staje się coraz większe. Dodatkowo obserwowany jest rosnący niedobór lekarz w większości krajów na całym świecie. Rozwiązaniem takiej sytuacji wydaje się być telemedycyna. Projekt ReMeDi ma na celu zbudowanie systemu robotycznego do zdalnej diagnostyki medycznej, który będzie wspierać lekarza poprzez umożliwienie zdalnej obecności przy wykorzystaniu inteligentnych i autonomicznych funkcji poznawczych. Ten artykuł skupia się na interfejsach systemu ReMeDi przeznaczonych do zdalnej ultrasonografii i prezentuje prace wykonane w ciągu dwóch lat trwania projektu.
Źródło:
Medical Robotics Reports; 2015, 4; 31--38
2299-7407
Pojawia się w:
Medical Robotics Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel base strain sensitivity measurement system with steady harmonic excitation
Autorzy:
Ye, Chuwei
Powiązania:
https://bibliotekanauki.pl/articles/2173901.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
base strain sensitivity
piezoelectric accelerometer
steady harmonic excitation
calibration
Opis:
Considering the low accuracy and low efficiency of the traditional calibration method for base strain sensitivity of accelerometers, a novel base strain sensitivity calibration system with steady harmonic excitation is proposed. The required cantilever beam for calibration is driven by an electromagnetic exciter to generate a base strain varying in a steady harmonic pattern. By applying a Wheatstone bridge circuit, the generated strain with low distortion can be measured. The measurement system with a compensation function can automatically calibrate the base strain sensitivity. The amplitude linearity and frequency response characteristics of the base strain sensitivity in two accelerometers are obtained experimentally, and the uncertainty in the results is 2% ( = 2).
Źródło:
Metrology and Measurement Systems; 2022, 29, 4; 751--762
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 88

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