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Wyświetlanie 1-15 z 26
Tytuł:
Wireless Communication Solution for Distributed Structural Health Monitoring
Autorzy:
Andrzejczak, A.
Łęczycki, P.
Makowski, M.
Pękosławski, B.
Pietrzak, P.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/226561.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless sensor networks
IEEE 802.15.4
Bluetooth Low Energy
DASH7
IEEE 802.11n
ZigBee
weightless
structural health monitoring
Opis:
This paper describes a design of wireless distributed SHM (Structure Health Monitoring) system with a particular emphasis on comparison of wireless communication standards. The presented solution is being deployed in the TULCOEMPA project. Several wireless communication standards are compared, with their benefits, disadvantages and typical areas of application. A choice of proper ISM (Industrial Scientific Medical) band and reasons for use of Wireless Sensor Networks are also discussed. The last part of this paper presents the proposed structure and designed prototype. The chosen architecture of the system and the program algorithm used for communication and measurements are described.
Źródło:
International Journal of Electronics and Telecommunications; 2013, 59, 2; 177-184
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computed tomography image processing for diagnostic and training applications in medicine
Autorzy:
Borzęcki, M.
Skurski, A.
Kamiński, M.
Balcerzak, B.
Chłapiński, J.
Napieralski, A.
Kasprzyk, J.
Lipiec, P.
Powiązania:
https://bibliotekanauki.pl/articles/333435.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
tomografia komputerowa
echokardiografia
fuzja
opłata
symulacja
computed tomography
echocardiography
fusion
TEE
simulation
Opis:
The paper deals with processing of imaging data obtained in the course of different medical examination procedures, for use in applications focused on improving both the diagnostic process of a patient as well as extending the training possibilities for medical personnel. Computed tomography (CT) data serves as the main source of structural and volumetric information. Fusion with left ventricular systolic function map, provides a vital information on the state of heart muscle. In parallel, the same set of computed tomography data is reused for simulation of trans-esophageal echocardiography (TEE). The presented simulation setup is used in the course of medical personnel training.
Źródło:
Journal of Medical Informatics & Technologies; 2012, 19; 67-73
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stereoscopic image visual perception
Autorzy:
Fornalczyk, K.
Napieralski, P.
Szajerman, D.
Wojciechowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397815.pdf
Data publikacji:
2015
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
stereoscopic image
image quality factors
perception convenience
visual fatigue
obrazy stereoskopowe
jakość obrazu
wygoda percepcji
zmęczenie wzroku
Opis:
Stereoscopic films and interactive presentations are extensively popularized whereas their perceived quality still dissatisfies viewers. The reasons are shared between hardware inconsistencies and stereo image producers unawareness concerning factors influencing depth perception quality. This paper reviews aspects influencing 3D image perception visual comfort, presents visual comfort estimation methods and suggests how to measure image perception quality. It also comprises results of researches conducted on dedicated CinemaVision Movie Diagnostics work stand.
Źródło:
International Journal of Microelectronics and Computer Science; 2015, 6, 1; 15-22
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal modelling of modern processors using FEM and compact model
Autorzy:
Galicia, M.
Zając, P.
Maj, C.
Szermer, M.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397698.pdf
Data publikacji:
2015
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
thermal simulation
finite-element method
multi-core
thermal modelling
symulacje termiczne
metoda elementów skończonych
wielordzeniowość
modelowanie cieplne
Opis:
A variety of thermal models has been proposed to predict the temperatures inside modern processors. In this paper, we describe and compare two such approaches, a detailed FEMbased simulation and a simpler architectural compact model. It is shown that both models provide comparable results when it comes to predicting the maximal temperature, however there are also non-negligible differences when estimating thermal gradients within a chip. Furthermore, transient simulation results show some differences in temperature profile during processor heating.
Źródło:
International Journal of Microelectronics and Computer Science; 2015, 6, 3; 110-116
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient rendering of caustics with streamed photon mapping
Autorzy:
Guzek, K.
Napieralski, P.
Powiązania:
https://bibliotekanauki.pl/articles/200625.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rendering
global illumination
photon mapping
caustics
wykonanie
globalne oświetlenie
mapowanie fotonów
kaustyki
Opis:
In this paper, we present the streamed photon mapping method for enhancing the rendering of caustics. In order to achieve a realistic caustic effect, global illumination methods require additional data, which are gathered by creating a caustic map or increasing the number of samples used for rendering. Our method employs a stream of photons with a varying luminance level depending on the material properties of the surface. The application of a concentrated photon stream provides the ability to render caustics effectively without increasing the number of photons in a photon map. Such an approach increases visibility of results, while also allowing for faster computations.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 3; 361-368
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of noise in the Monte Carlo point sampling method
Autorzy:
Guzek, K.
Napieralski, P.
Powiązania:
https://bibliotekanauki.pl/articles/202392.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
photorealism
image evaluation methods
image quality metrics
visual perception
global illumination
Opis:
This paper gives a concise overview of the techniques we have used to find out the degree of measuring the quality of rendered images and a level of noise in particular. First part of the paper presents designed and conducted psychophysical experiment involving human subjective judgment. Then, two of the existing numerical image comparison methods are considered in the context of assessing the level of noise produced by global illuminations algorithms. The results of the participants’ subjective responses are correlated with the data obtained from objective mathematical metrics. The main goal of research was to determine the objective and perceptual measure of quality for images with fixed sampling strategy. The results will help to establish the measures of identifying the human perception in the assessment of images generated with global illumination algorithms.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 1; 15-19
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simple multithreaded C++ framework for high-performance data acquisition systems
Autorzy:
Ingles, R.
Perek, P.
Orlikowski, M.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397811.pdf
Data publikacji:
2015
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
multithreading
ring buffer
real-time system
data acquisition system
C++
Linux
wielowątkowość
bufor pierścieniowy
systemy czasu rzeczywistego
system akwizycji danych
Opis:
The data acquisition systems must be capable of process all the data produced by the source to ensure the highest level of accuracy, especially when it deals with hard real-time system monitoring task. However, the production of data is faster than the process to acquire and to process such a data. Using concurrency approach is an alternative to obtain the required level of performance and data processing. This paper presents the comparison between various C++ frameworks that by using multithreading technology and ringbuffer data structure allow data transfer in concurrent way. The comparison is based on the time interval between the instant when data is published and the instant when the data is gathered. These latency measurements have been taken using the configuration of one producer and two consumers for all evaluated frameworks. The results show that using standard C++ libraries to develop a simple framework it is possible to achieve suitable performance in order to fulfill the requirements of the high performance data acquisition systems described.
Źródło:
International Journal of Microelectronics and Computer Science; 2015, 6, 2; 29-34
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multichannel readout system for registration of electronic system temperature response with high temporal resolution
Autorzy:
Janicki, M.
Kulesza, Z.
Pietrzak, P.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397885.pdf
Data publikacji:
2010
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
termiczna charakterystyka systemów elektronicznych
rzeczywisty czas równoległych pomiarów przetwarzania danych
thermal characterization of electronic systems
real time parallel measurement data processing
Opis:
This paper presents the design and the practical realization of a measurement system dedicated to fast real-time multichannel registration of electronic system thermal response. The response is registered in parallel channels with a frequency up to 1 MHz- Such a high frequency is required for the thermal identification of electronic systems. The designed circuit is used here for the investigation of a thermal test ASIC. The presented solution can be extended for a different number of measurement channels and adapted for other types of sensors.
Źródło:
International Journal of Microelectronics and Computer Science; 2010, 1, 3; 305-310
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models for Risk Stratification of Sudden Cardiac Death Based on Logical Conjunction and Decision Tree
Autorzy:
Kamiński, M
Kotas, R.
Mazur, P.
Sakowicz, B.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397724.pdf
Data publikacji:
2013
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
nagły zgon sercowy
SCD
Holter EKG
model stratyfikacji ryzyka
sudden cardiac death
ECG Holter monitoring
risk stratification model
Opis:
This article presents methodology of simple model building for risk stratification of sudden cardiac death based on an original ECG signal analysis platform. The method includes the analysis of the ECG signal extraction of selected parameters and model optimization for predicting sudden cardiac death.
Źródło:
International Journal of Microelectronics and Computer Science; 2013, 4, 2; 65-71
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Allan variance in gyroscopic sensor noise analysis
Autorzy:
Kotas, R.
Kamiński, M.
Marciniak, P.
Sakowicz, B.
Napieralski, A.
Kurzych, A.
Krajewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/397740.pdf
Data publikacji:
2017
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
Allan variance
gyroscope
accelerometer
MEMS
wariancja Allana
żyroskop
akcelerometr
Opis:
The paper presents the investigation of gyroscopic sensor noise properties used in the construction of body position detection device for posturographic testing. The first part shows the sources of noise in gyro sensors and their measurement methods. In the second part of the paper, the authors describe their own research on the efficiency of the calculation of the Allan variance (one of the popular noise evaluation methods) and the wrong concept of calculations acceleration. The article concludes with an explanation of the reasons for the lack of theoretical research and the results of practical measurements of the sensors used in the project.
Źródło:
International Journal of Microelectronics and Computer Science; 2017, 8, 1; 10-15
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software Platform for Combined Analysis of Weather Data and Holter Monitoring Data
Autorzy:
Kotas, R.
Kamiński, M.
Mazur, P.
Cieślik-Guerra, U.
Sakowicz, B.
Marańda, W.
Piotrowicz, M.
Kurpesa, M.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397959.pdf
Data publikacji:
2012
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
EKG
Holter EKG
wpływ pogody na zdrowie
monitoring meteorologiczny
ECG
Holter monitoring
weather influence on health
weather monitoring
Opis:
This paper presents the concept of computing software platform that allows for simultaneous analysis of weather and Holter signals. The first part of this paper describes the weather station and the software platform that is currently being developed. The second part of the article presents examples of preliminary analysis that can be performed using the software platform.
Źródło:
International Journal of Microelectronics and Computer Science; 2012, 3, 4; 159-164
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology for Implementing Scalable Run-Time Reconfigurable Devices
Autorzy:
Kotynia, Ł.
Amrozik, P.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/226469.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
design reuse
floorplanning
FPGA
implementation
verification
reconfigurable logic
timing analysis
Opis:
The aim of this paper is to present the implementation methodology for an ASIC constituting the fine-grained array of dynamically reconfigurable processing elements. This methodology was developed during the work on a device which can operate as a typical Field Programmable Gate Array (FPGA) with some bio-inspired features or as a multi-core Single Instruction Multiple Data (SIMD) processor. Such high diversity of possible operating modes makes the design implementation extremely demanding. As a consequence, the comprehensive study and analysis of the different possible implementation techniques in this case allowed us to formulate a consistent and complete methodology that can be applied to other systems of similar structure.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 2; 177-183
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IEEE 802.15.4 wireless network application in real-time PLC-based control systems
Autorzy:
Krasiński, P.
Pękosławski, B.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/398098.pdf
Data publikacji:
2013
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
wireless sensor network
Modbus
ZigBee
IEEE 802.15.4
PLC
real-time
industrial automation
sieć czujników bezprzewodowych
czas rzeczywisty
automatyka przemysłowa
Opis:
Most of the modern industrial automation systems are based on Programmable Logic Controllers (PLC). Vast selection of communication networks are available for automation system designers. Nevertheless, contemporary standards were not designed with real-time wireless sensor networks in mind. Based on our experience in IEEE 802.15.4 networks and automation fields we discuss possible means which can make it possible to take most advantage of real-time wireless networks in traditional automation control systems.
Źródło:
International Journal of Microelectronics and Computer Science; 2013, 4, 4; 170-174
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test interface for piezoelectric vibration energy harvesters
Autorzy:
Pękosławski, B.
Skibiński, P.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397983.pdf
Data publikacji:
2017
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
piezoelectric harvester
vibration energy harvesting
measurement stand
laboratory equipment
harvester piezoelektryczny
odzyskiwanie energii drgań
stanowisko pomiarowe
sprzęt laboratoryjny
Opis:
The paper presents microcontroller-based interface for testing of piezoelectric vibration energy harvesters testing and measurement of their parameters. The interface is proposed as a low-cost solution for laboratory stands with electrodynamic shakers. The proposed system contains power processing circuits for piezoelectric harvesters. The microcontroller sets circuit interconnections suitable for a given test, controls circuitry operation, acquires measurement results and presents them to a user. The investigated piezoelectric harvester parameters include optimal load resistance, maximum generated power, resonant frequencies and mechanical damping coefficient. Output power gain can be also examined for AC/DC converter topology with nonlinear voltage processing SSHI circuit.
Źródło:
International Journal of Microelectronics and Computer Science; 2017, 8, 3; 116-121
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image Acquisition and Visualisation in DOOCS and EPICS Environments
Autorzy:
Perek, P.
Wychowaniak, J.
Makowski, D.
Orlikowski, M.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397971.pdf
Data publikacji:
2012
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
DOOCS
EPICS
HEP
MicroTCA
rozproszony system sterowania
akwizycja obrazów
wizualizacja
kamera
przetwarzanie danych
distributed control system
image acquisition system
visualization
cameras
data processing
Opis:
The High Energy Physics (HEP) experiments, due to their large scale, required performance and precision, have to be controlled by complex, distributed control systems. The systems are responsible for processing thousands of signals from various sensors of different types. Very often, one of the data sources applied in such systems are visible light/infrared cameras or other imaging sensors, which provide substantial information about studied phenomena. High data throughput for camera systems require dedicated mechanisms for data collecting and processing. Moreover, the images from cameras should be also available to system operator. It needs the support from both operator panels interface and control application which should provide data in the dedicated format. The paper presents two different approaches to image distribution, processing and visualisation applied in distributed control systems. Discussed is the issue of support for cameras and image data implemented in the Distributed Object Oriented Control System (DOOCS) and an example control system designed to the needs of image acquisition system on the base of the Experimental Physics and Industrial Control System (EPICS) environment.
Źródło:
International Journal of Microelectronics and Computer Science; 2012, 3, 2; 60-66
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 26

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