Autor: Augustyniak, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Cooperation framework for personal and home care monitoring systems
Autorzy:: Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333046.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: e-zdrowie
telemedycyna
integracja systemów
e-health
telemedicine
system integration
Opis:: The scenarios of cooperation between personal healthcare systems are discussed in this paper. Current telemedical solutions for home care provide the patient with a seamless diagnosis based on selected vital parameters. The application of two or more specialized systems monitoring the same subject rises the question of possible interference and cooperation. The cooperation between home care and wearable systems is of particular interest, because of their complementary features. Considerations of various cooperation scenarios led to the specification of three cooperation levels with regard to the required software integration. The paper presents also the design of a cooperation protocol for two prototype surveillance systems, enabling the use of communication resources of the stationary system to carry the messages of the wearable system over the wired transmission channel.
Źródło:: Journal of Medical Informatics & Technologies; 2009, 13; 85-90
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Monitoring the progress of fast reading training with use of the eyetracker and scanpath statistics
Autorzy:: Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333179.pdf
Data publikacji:: 2006
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: analiza ścieżki skanu
system ludzkiej wizualizacji
próg percepcji
scanpath analysis
human visual system
perception skill
Opis:: The research on the human reading technique and text perception strategies needs objective evaluation methods. Our proposal consists in the use of scan-path recording and eye track processing results as estimators of reading skills and capability of error compensation. Visual tasks, being principal investigation tool, were completed by arrangement of texts for presentation, eye trajectory acquisition and assessment of comprehension degree. Our results show that gaze point statistics represent well the observer performance and skills in fast reading even in free-spotting-based visual tasks. Additionally, we reveal very high human tolerance for errors, outperforming any known optical character recognition software.
Źródło:: Journal of Medical Informatics & Technologies; 2006, 10; 153-161
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Optimizing the machine description of electrocardiogram
Autorzy:: Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333326.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: interpretacja EKG
przenośne urządzenie medyczne
telemedycyna
electrocardiogram interpretation
wearable medical devices
telemedicine
Opis:: The electrocardiogram is a digital record of effective action potentials of heart muscle fibres, thus it contains an important information about the heart function. Unfortunately, the signal theory-based description of the ECG contents is not efficient in extracting these data, and the practical interpretation software is mostly based on heuristic statements. This conclusion was a motivation for our research on the expert-like machine reasoning based on ECG perception analysis, physiology-driven feature extraction and fuzzy logic. This paper highlights the aspect of optimal description of an electrocardiogram contents in a digital record.
Źródło:: Journal of Medical Informatics & Technologies; 2004, 8; MM41-48
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Assisted living infrastructure
Autorzy:: Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333499.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: wspieranie życia
technologia otoczenia
komputeryzacja
assisted living
ambient technologies
pervasive computing
Opis:: Assisted living applications are commonly understood as technical environment for disabled or elderly people providing the care in the user-specific range. We are going to present the data capture methodology and design of a home care system for medical-based surveillance and man-machine communication. The proposed system consists of the video-based subject positioning, monitoring of the heart and brain electrical activity and eye tracking. The multimodal data are automatically interpreted and translated to tokens representing subject's status or command. The circadian repetitive status time series (behavioral patterns) are a background for learning of the subject's habits and for automatic detection of unusual behavior or emergency. Due to mutual compatibility of methods and data redundancy, the use of unified status description vouches for high reliability of the recognition despite the use of simplified measurements methods. This surveillance system is designed for everyday use in home care, by disabled or elderly people.
Źródło:: Journal of Medical Informatics & Technologies; 2011, 17; 11-22
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Packetizing of non-uniform telemedical data with use of nested report structures
Autorzy:: Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333542.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: telemedycyna
niejednolite dane
telemedicine
non-uniform data
adaptive ECG interpretation
Opis:: This paper presents an effective solution of packetizing of non-uniform data for the purpose of reporting in telemedical surveillance systems with adaptive interpretation. Unlike the regular systems, where the data continuity is guaranteed by the common reporting interval and unified report content, the adaptive systems must implement a reservation procedure in order to proper data delivery, accordingly to sampling rates set individually for each of the diagnostic parameters. This procedure combines the content of every packet with respect to changes in data flow from particular diagnostic data, caused by time-variable requirements for the update rate of their time series. Our approach postulates appending to the information structure of two auxiliary data attributes, the validity period and the priority. The proposed solution was implemented and tested in a prototype cardiology-oriented monitor using two alternative reporting modes following the monitoring requisites. In immediate mode diagnostic packets are transmitted immediately accordingly to the time requirements, what allows the telediagnostic system to respond in short time in case of emergency. In delayed mode the transmission is deferred until packets are entirely filled with valid data, what limits the usage of data carrier for long-time regular reporting.
Źródło:: Journal of Medical Informatics & Technologies; 2011, 18; 9-17
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Comparing methods of ECG respiration signals derivation based on measuring the amplitude of QRS complexes
Autorzy:: Kikta, A.
Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333821.pdf
Data publikacji:: 2007
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: EKG
sygnał oddechowy
wykrywanie bezdechu
ECG
EDR
respiratory signal
apnea detection
Opis:: This paper presents the study of algorithms for derivation of respiration waveform from the electrocardiogram. The problem has considerable clinical impact, because the heart rate and respiration are both driven by the central nervous system, and commonly used low-cost Holter recording may be used for efficient detection of breath disturbances (e.g. apnea). Three methods based on: heart rate, heart position and lung resistance influencing the ECG amplitude were compared in our research. Among 18 volunteers breathing at a controlled frequency all implemented algorithms show acceptable sensitivity of order of 97% in slow breathing phases detection. In fast breathing the sensitivity is reduced to 90%, since the heart beats are too sparse with regard of respiration waveform.
Źródło:: Journal of Medical Informatics & Technologies; 2007, 11; 155-163
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Implementation of wavelet compression of the electrocardiogram in signal processor
Autorzy:: Kowacki, Ł.
Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/333815.pdf
Data publikacji:: 2007
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: kompresja EKG
przekształcenia falkowe
detekcja zespołu QRS
electrocardiogram compression
wavelet transformation
QRS complex detection
Opis:: The paper presents the study of the algorithm of wavelet compressor dedicated to electrocardiographic signals and results of its implementation in the signal processor SHARC ADSP-21364. The designed compressor is characterized by a work in the real time and with possibility of the separate compression of the signal about the higher diagnostic worth determined as the QRS complex.
Źródło:: Journal of Medical Informatics & Technologies; 2007, 11; 147-153
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Correlating the degree of observers preoccupation and the observation time: visual tasks with OBER2 eyetracker
Autorzy:: Augustyniak, P.
Mikrut, Z.
Powiązania:: https://bibliotekanauki.pl/articles/333817.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: ruchy gałki ocznej
system pomiarowy Ober2
uwaga wzrokowa
eyeball movements
Ober2
eyetracker
visual attention
Opis:: This paper describes a set of visual tasks performed with a goal to find a correlation between observer's preoccupation and the observation time. Several aspects of objects differentiation were investigated: shape complexity, colour, uniqueness and size. Four visual tasks were performed by 10 volunteers. The eyeball position was captured with use of the OBER 2 eyetracker based on the infrared beam reflection measurements. Finally the recorded eyeball traces were subject of statistical processing. Interesting findings are the high attractiveness of complicated shapes and no influence of object's size on the observation time. Another result is an unexpected high inter-observers variation of attention difference in each visual task. The results play a key role in our research on perceptual model of biomedical signals and images. The other applications may be found in the area of visual information usability, ergonomics or perception-like control of automated visual systems.
Źródło:: Journal of Medical Informatics & Technologies; 2002, 4; MT1-8
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Distant Measurement of Plethysmographic Signal in Various Lighting Conditions Using Configurable Frame-Rate Camera
Autorzy:: Przybyło, J.
Kańtoch, E.
Jabłoński, M.
Augustyniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/221113.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: photoplethysmography
remote patient monitoring
heart rate detection
video signal processing
Opis:: Videoplethysmography is currently recognized as a promising noninvasive heart rate measurement method advantageous for ubiquitous monitoring of humans in natural living conditions. Although the method is considered for application in several areas including telemedicine, sports and assisted living, its dependence on lighting conditions and camera performance is still not investigated enough. In this paper we report on research of various image acquisition aspects including the lighting spectrum, frame rate and compression. In the experimental part, we recorded five video sequences in various lighting conditions (fluorescent artificial light, dim daylight, infrared light, incandescent light bulb) using a programmable frame rate camera and a pulse oximeter as the reference. For a video sequence-based heart rate measurement we implemented a pulse detection algorithm based on the power spectral density, estimated using Welch’s technique. The results showed that lighting conditions and selected video camera settings including compression and the sampling frequency influence the heart rate detection accuracy. The average heart rate error also varies from 0.35 beats per minute (bpm) for fluorescent light to 6.6 bpm for dim daylight.
Źródło:: Metrology and Measurement Systems; 2016, 23, 4; 579-592
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Sealing of silicon-glass microcavities with polymer filling
Autorzy:: Knapkiewicz, P.
Augustyniak, I.
Powiązania:: https://bibliotekanauki.pl/articles/200754.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: anodic bonding
polymer filling
sealing of silicon and glass
polimer
uszczelnienie
polimerowy wypełniacz
Opis:: Investigation of hermetic sealing of selected polymers in silicon-glass microcavities has been presented. The anodic bonding method has been adapted for hermetic encapsulation of the polymer in microcavity. According to standard conditions of the anodic bonding process (temperature: 400°C, voltage: 1000 V), the main challenge was the significant reduction of temperature in order to avoid degradation of the polymer. An analysis of the influence of reduced temperature and oxygen-free atmosphere on bond quality has been done. Proper parameters of the anodic bonding process enabling good and hermetic encapsulation of the polymer in the microcavity as well as optimal polymer treatment have been elaborated. Studies have shown that the closure of high density polyethylene in microcavity by anodic bonding process at a temperature reduced to 340°C is possible. This procedure will be used for the fabrication of main elements for a new family of high radiation MEMS sensors.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 2; 283-286
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Adaptation of engineering FEA-based algorithms to LCF failure and material data prediction in offshore design
Autorzy:: Augustyniak, M.
Gajewski, P.
Świątek, K.
Powiązania:: https://bibliotekanauki.pl/articles/279187.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: low-cycle fatigue
finite element method
high-strength steel
stress gradient influence
Opis:: There is an ever growing industrial demand for quantitative assessment of fatigue endurance of critical structural details. Although FEA-based calculations have become a standard in engineering design, problems involving the Low-To-Medium cycle range (101 -104 ) remain challenging. This paper presents an attempt to optimally choose material data, meshing density and other algorithm settings in the context of recent design of the large offshore windfarm installation vessel, VIDAR. In this study, an attempt is made to assess default FEA-based procedures in RADIOSS software by comparing an experimental test against numerical analyses. Standard slender cylindrical (“I”) samples as well as originally designed “Z”-shaped samples made of A90 (S690)-grade steel have been loaded at various nominal stress ranges with or without local yielding. A good correlation has been found between FEA results and experimental cycles-to-failure in I-shaped samples, provided the software material data generator is avoided and Smith-Watson-Topper mean stress correction is used. In the case of Z-shaped samples, the calculated cycles-to-initiation of macro-crack is significantly lower (factor of 3) from the experiment. The observed discrepancy is argued to be due to stress gradient influence.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1345-1356
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Control of mindstorms NXT robot using Xtion Pro camera skeletal tracking
Autorzy:: Żmudziński, Ł.
Augustyniak, A.
Artiemjew, P.
Powiązania:: https://bibliotekanauki.pl/articles/950452.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:: skeletal tracking
robot control
multi-user control
OpenGL
Opis:: This paper focuses on the topic of creating a gesture-oriented user control system for robotic agents. For testing purposes we have used a Lego Mindstorm NXT self-designed robot and a Xtion Pro camera. Our construction consists of a NXT brick and three motors (two used for movement and one for the clutch mechanism). Our software is developed using C++ with NXT++ and OpenNi/NiTe libraries. System tests were performed in a real environment.
Źródło:: Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(1); 71-81
1505-4675
2083-4527
Pojawia się w:: Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Review of the methods of cartographic presentation of warfare
Autorzy:: Augustyniak, J.
Kuźma, M.
Pędzich, P.
Powiązania:: https://bibliotekanauki.pl/articles/92570.pdf
Data publikacji:: 2015
Wydawca:: Oddział Kartograficzny Polskiego Towarzystwa Geograficznego
Tematy:: historical maps
military geography
cartographic presentation of warfare
Opis:: Maps, depicting the warfare, are elaborated according to the rules developed over the years. Although, they are not free of errors. The authors draw our attention to the diversity of methods related to the cartographic presentations, which are shown on the historical maps. This is quite understandable, because every such a map introduces an individual point of view on the historical facts. It is noted, that the most commonly used methods are the qualitative ones, among which, for instance, first of all, the method of signature is frequently used. In the case of historical maps displaying an event in the specific sequence of times, a loss of cartographic information always occur. This is connected both with the complexity of historical facts and with the difficulty in reading a map, which should present the dynamics of this phenomenon in a complete way. The dynamic variables, such as the time of exposure, duration, frequency, order, degree of change and synchronisation, should be taken into account on the maps of warfare. The use of information technology makes it possible to develop not only the simple maps presenting the course of warfare in the statistic and schematic ways, but also the maps, which are rich in various types of multimedia information. Multimedia cartographic presentations can be enriched with the photos and panoramas showing the direct effects of warfare and the pseudo three-dimensional visualization showing the battle from a selected direction. The proprietary software let to combine the sequence of photos into a presentation, allowing to take a virtual tour of the areas directly affected by the hostilities. Network services, such as WMS, WFS, WCS, provide the integrated data from the different sources for us. So, we can connect the archival maps with the contemporary satellite images, defining, thus, the location of a specific place in the terrain. The authors do not cover the issue of complexity connected with the elaboration of maps presenting the combat operations. The most important problems, which have not been discussed in this article, are the following ones: lack of base maps from the period to which the presented issues related, deliberate distortion of map contents, historical and cartographic imprecisions presented on the maps, appropriate selection of the methods of cartographic presentation related to the phenomena, which are presented on the maps.
Źródło:: Polish Cartographical Review; 2015, 47, 3; 147-158
2450-6974
Pojawia się w:: Polish Cartographical Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Measurements of the mechanical Barkhausen noise in ferromagnetic steels
Wpływ obróbki cieplnej na właściwości mechanicznego efektu Barkhausena w stali P91
Autorzy:: Maciakowski, P.
Augustyniak, B.
Piotrowski, L.
Chmielewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/159894.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki
Tematy:: NDT
mechaniczny efekt Barkhausena
stal ferromagnetyczna
badania nieniszczące
obróbka cieplna stali
mechanical Barkhausen noise
ferromagnetic steels
nondestructive testing
tempering
Opis:: This paper presents a new technique for measuring the mechanical Barkhausen noise in ferromagnetic steels. We study the effect of tempering time of P91 grade steels on: parameters of mechanical Barkhausen noise, mechanical hardness and magnetic coercivity. All of these quantities are compared. The variations in amplitude of root mean square of mechanical Barkhausen noise for different tempering times are revealed to be greater than those of hardness and coercivity.
W pracy została opisana metoda badania mechanicznego efektu Barkhausena z wygorzystaniem drgań giętnych belki. Badany był wpływ czasu wygrzewania hartowanej stali P91 na: właściwości mechanicznego efektu Barkhausena, twardość mechaniczną oraz pole koercji. Stwierdzono, że amplituda obwiedni sygnału napięciowego mechanicznego efektu Barkhausena wzrasta wraz z czasem wygrzewania, natomiast twardość mechaniczna oraz pole koercji maleją. Natężenie mechanicznego efektu Barkhausena wykazuje największą dynamikę względnych zmian, co pokazuje, że jest to najczulsze narzędzie do oceny stanu wygrzewania stali P91.
Źródło:: Prace Instytutu Elektrotechniki; 2012, 258; 221-228
0032-6216
Pojawia się w:: Prace Instytutu Elektrotechniki
Dostawca treści:: Biblioteka Nauki

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