Search results for: Paweł Mazurek

Items from 1 to 20 out of 24 results

article

Event Detection System for the Penitentiary Institutions using Multimodal Data and Deep Networks

Piotr Bilski, Marcin Lewandowski, Adrian Bilski, Andrzej Buchowicz, more

Machine Graphics and Vision > 2023 > Vol. 32, No. 3/4 > 233--254

The aim of the paper is to present the distributed system for the unwanted event detection regarding inmates in the closed penitentiary facilities. The system processes large number of data streams from IP cameras (up to 180) and performs the event detection using Deep Learning neural networks. Both audio and video streams are processed to produce the classification outcome. The application-specific...

article

Wprowadzenie do projektowania algorytmów zarządzających siecią dystrybucji energii z obciążeniami ładowania pojazdów

Aleksander Chudy, Paweł Mazurek

Przegląd Elektrotechniczny > 2022 > R. 98, nr 1 > 71--74

Zwiększone zapotrzebowanie na energię elektryczną spowodowane przewidywaną popularyzacją pojazdów elektrycznych może zagrozić bezpiecznej i ekonomicznej pracy sieci elektroenergetycznej. Z tego względu niezbędne są odpowiednie strategie ładowania pojazdów. Skoordynowane systemy ładowania pojazdów mogą być realizowane jako systemy scentralizowane, zdecentralizowane i hierarchiczne. W artykule skupiono...

article

Analiza konfiguracji elektrod w odniesieniu do zaburzeń przewodzonych w reaktorze plazmowym

Paweł Mazurek

Przegląd Elektrotechniczny > 2019 > R. 95, nr 12 > 176--179

Reaktory plazmowe są urządzeniami technologicznymi odpowiedzialnymi za proces przekształcania gazu technologicznego w plazmę z wykorzystaniem energii elektrycznej. Źródłem plazmy jest wymuszony przepływ prądu elektrycznego w gazie w postaci łuku elektrycznego. Wyładowania elektryczne i plazma generowane przez reaktor plazmowy są źródłem silnych zakłóceń propagowanych zarówno przez promieniowanie,...

article

“You are witnesses of these things” (Lk 24,48). Importance of Witness in Contemporary Missionary Activity

Paweł Mazurek

Nurt SVD > 2019 > 1 > 27-42

Autor podejmuje temat „misji, jako dawanie świadectwa” w Ewangelii Łukasza i Dziejach Apostolskich. Następnie zastanawia się nad pojęciem świadectwa w dokumentach Kościoła. Przedstawia także specyfikę powołania świeckich do dawania świadectwa w ich życiu codziennym. Analizuje również charakterystykę świadectwa wobec innych wyznań w świetle dokumentów Misjonarzy Afryki. Okazując szczególne zainteresowanie...

article

Wpływ przepływu gazu roboczego na zaburzenia przewodzone w torze zapłonu trójfazowego reaktora plazmowego typu Glid

Paweł Mazurek

Przegląd Elektrotechniczny > 2019 > R. 95, nr 3 > 37--40

Reaktory plazmowe to zaawansowane urządzenia służące do oczyszczania m.in. gazów. Wyładowania reaktora są źródłem zaburzeń elektromagnetycznych generowanych do systemu zasilania. W pracy przedstawiono wyniki badań przewodzonych zaburzeń elektromagnetycznych w torze zapłonu trójfazowego reaktora GlidArc. Przeprowadzono analizę emisji zaburzeń (w odniesieniu do wymagań EMC) przy kilku prędkościach przepływu...

article

Use of kinematic and mel-cepstrum-related features for fall detection based on data from infrared depth sensors

Paweł Mazurek, Jakub Wagner, Roman Z. Morawski

Biomedical Signal Processing and Control > 2018 > 40 > C > 102-110

A methodology for acquisition and preprocessing of measurement data from infrared depth sensors, when applied for fall detection, combined with several approaches to the classification of those data, is proposed. Data processing is initiated with extraction of the silhouette from the depth image and estimation of the coordinates of the center of that silhouette. Next, two groups of features to be...

article

Comparison of two techniques for monitoring of human movements

Jakub Wagner, Paweł Mazurek, Andrzej Miękina, Roman Z. Morawski, more

Measurement > 2017 > 111 > C > 420-431

This paper is devoted to a comparison of two sensor technologies that may be employed in care services for elderly or disabled persons. The performance of monitoring systems, based on impulse-radar sensors and depth sensors, has been systematically compared in a series of experiments which involved the estimation of several quantities, carrying information important for medical and healthcare services,...

chapter

Regularized numerical differentiation of depth-sensor data in a fall detection system

Jakub Wagner, Pawel Mazurek, Roman Z. Morawski

2017 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA) > 234 - 236

2017 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA)

The research reported in this paper is related to the depth-sensor technology when applied in care services for the elderly and disabled persons. It is focused on a system for non-intrusive fall detection, in which the trajectory of the mass center of a monitored person is estimated on the basis of depth-sensor data and differentiated numerically in order to estimate the velocity of that person. The...

chapter

Fusion of measurement data from impulse-radar sensors and depth sensors when applied for patients monitoring

Pawel Mazurek, Jakub Wagner, Andrzej Miekina, Roman Z. Morawski

2017 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA) > 205 - 210

2017 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA)

The research reported in this paper is related to the fusion of measurement data from the impulse-radar sensors and infrared depth sensors, i.e. significantly different sensors that may be employed for unobtrusive monitoring of elderly and disabled persons. The performance of monitoring systems, based on both types of sensors - when used separately and when used in combination - has been compared...

chapter

Signal processing in a two-module radar system for monitoring of human position and movements in an indoor environment

Jakub Wagner, Andrzej Mickina, Pawel Mazurek, Roman Z. Morawski, more

2016 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) > 315 - 320

2016 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)

The research reported in this paper is related to an assistive technology that may be used by healthcare services for elderly and disabled people. A system for non-intrusive monitoring of the movements of such persons in their home environment, based on impulse-radar sensors, is adressed. A large family of new procedures for the estimation of position and walking velocity of a monitored person, on...

article

Comparative study of three algorithms for estimation of echo parameters in UWB radar module for monitoring of human movements

Paweł Mazurek, Andrzej Miękina, Roman Z. Morawski

Measurement > 2016 > 88 > C > 45-57

The research reported in this paper is related to the ultra-wide-band radar technology that may be employed in care services for elderly and disabled persons. Three algorithms for preprocessing of measurement data from an impulse radar sensor, when applied for such people monitoring, are compared with respect to the uncertainty of estimation of echo parameters. These are: an algorithm based on the...

article

Novel renin inhibitors containing derivatives of N‐alkylleucyl‐β‐hydroxy‐γ‐amino acids

Iwona Winiecka, Paweł Jaworski, Aleksander Paweł Mazurek, Dorota Marszałek, more

Journal of Peptide Science > 22 > 2 > 106 - 115

In search for new drugs lowering arterial blood pressure, which could be applied in anti‐hypertensive therapy, research concerning agents blocking of renin‐angiotensin‐aldosteron system has been conducted. Despite many years of research conducted at many research centers around the world, aliskiren is the only one renin inhibitor, which is used up to now. Four novel potential renin inhibitors, having...

article

Cytisine basicity, solvation, logP, and logD theoretical determination as tool for bioavailability prediction

Tomasz Pieńko, Monika Grudzień, Przemysław Paweł Taciak, Aleksander Paweł Mazurek

Journal of Molecular Graphics and Modelling > 2016 > 63 > C > 15-21

Cytisine, an α₄β₂ nicotinic receptor partial agonist, is a plant alkaloid widely used as a smoking cessation agent. Despite long history of use, knowledge on pharmacokinetics of cytisine still demands an extension. This work is aimed at theoretical determination of physicochemical parameters that affect the bioavailability of cytisine. The acidic dissociation constant, Gibbs free energy of solvation...

chapter

Neural network classifier for fall detection improved by Gram-Schmidt variable selection

Stanislaw Jankowski, Zbigniew Szymanski, Pawel Mazurek, Jakub Wagner

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS) > 2 > 728 - 732

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

The paper describes results of research on the fall detection in elderly residents based on infra red depth sensor measurements. We present the methodology of data acquisition, preprocessing and the feature extraction. Multilayer perceptron is used for classification. In order to improve the classifier generalization feature selection block by Gram-Schmidt orthogonalization is added. It determines...

chapter

Application of naïve Bayes classifier in fall detection systems based on infrared depth sensors

Pawel Mazurek, Roman Z. Morawski

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS) > 2 > 717 - 722

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

A novel solution of the fall detection problem, based on the use of infrared depth sensors, is proposed. A methodology for acquisition of real-world data and their preprocessing is presented. The procedures for feature generation, preprocessing and selection are described. The naïve Bayes classifier is designed for the selected features and its performance is evaluated using a data set consisting...

chapter

Deep learning classifier for fall detection based on IR distance sensor data

Stanislaw Jankowski, Zbigniew Szymanski, Uladzimir Dziomin, Pawel Mazurek, more

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS) > 2 > 723 - 727

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

The goal of research is the fall detection in elderly residents based on infra red depth sensor measurements. Our attention is focused on statistical properties as generalization. The effectiveness of discriminative statistical classifiers (multilayer perceptron) is improved by addition of feature selection block by Gram-Schmidt orthogonalization, which determines the ranking of the features, and...

chapter

Application of k Nearest Neighbors Approach to the fall detection of elderly people using depth-based sensors

Piotr Bilski, Pawel Mazurek, Jakub Wagner

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS) > 2 > 733 - 739

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

This paper presents the methodology of the elderly people's fall detection using the k Nearest Neighbors (kNN) as the decision making module. The problem of the data acquisition by the depth sensors and feature selection for this task is introduced. The classification problem is discussed. The decision making algorithm and its parameters are briefly described. Experimental results based on data collected...

chapter

Acquisition and preprocessing of data from infrared depth sensors to be applied for patients monitoring

Pawel Mazurek, Jakub Wagner, Roman Z. Morawski

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS) > 2 > 705 - 710

2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

A methodology for acquisition and preprocessing of real-world data, necessary for the development of classification algorithms dedicated to fall detection, is proposed. Raw measurements are acquired by means of infrared depth sensors. Their preprocessing consists of two main operations: extraction of the silhouette from the depth image and estimation of the coordinates of the center of that silhouette...

chapter

The raman amplifier in low-complexity PolMux DWDM 1310 nm transmission

Pawel Mazurek, Pawel Czyzak, Huug de Waardt, Jaroslaw Piotr Turkiewicz

2015 17th International Conference on Transparent Optical Networks (ICTON) > 1 - 4

2015 17th International Conference on Transparent Optical Networks (ICTON)

In this paper, we experimentally investigate the impact of the Raman amplifier on the transmission quality in the high capacity and low complexity polarization multiplexed and dense wavelength division multiplexed transmission system in the 1310 nm wavelength domain. We compare its performance with the same system utilizing the semiconductor optical amplifier. Conducted experiments show that in the...

article

Towards 1 Tbit/s SOA-based 1310 nm transmission for local area network/data centre applications

Paweł Mazurek, Huug de Waardt, Jarosław Piotr Turkiewicz

IET Optoelectronics > 2015 > 9 > 1 > 1 - 9

The growing data traffic in the local area networks is driving development of the cost-effective transmission systems that can carry it effectively. In this study, firstly, we investigate the influence of a semiconductor optical amplifier (SOA) on the transmission quality in the 1310 nm wavelength-division-multiplexed system. We examine the differences in the channels gain and power penalty depending...

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INFONA - science communication portal

Search results for: Paweł Mazurek

Event Detection System for the Penitentiary Institutions using Multimodal Data and Deep Networks

Wprowadzenie do projektowania algorytmów zarządzających siecią dystrybucji energii z obciążeniami ładowania pojazdów

Analiza konfiguracji elektrod w odniesieniu do zaburzeń przewodzonych w reaktorze plazmowym

“You are witnesses of these things” (Lk 24,48). Importance of Witness in Contemporary Missionary Activity

Wpływ przepływu gazu roboczego na zaburzenia przewodzone w torze zapłonu trójfazowego reaktora plazmowego typu Glid

Use of kinematic and mel-cepstrum-related features for fall detection based on data from infrared depth sensors

Comparison of two techniques for monitoring of human movements

Regularized numerical differentiation of depth-sensor data in a fall detection system

Fusion of measurement data from impulse-radar sensors and depth sensors when applied for patients monitoring

Signal processing in a two-module radar system for monitoring of human position and movements in an indoor environment

Comparative study of three algorithms for estimation of echo parameters in UWB radar module for monitoring of human movements

Novel renin inhibitors containing derivatives of N‐alkylleucyl‐β‐hydroxy‐γ‐amino acids

Cytisine basicity, solvation, logP, and logD theoretical determination as tool for bioavailability prediction

Neural network classifier for fall detection improved by Gram-Schmidt variable selection

Application of naïve Bayes classifier in fall detection systems based on infrared depth sensors

Deep learning classifier for fall detection based on IR distance sensor data

Application of k Nearest Neighbors Approach to the fall detection of elderly people using depth-based sensors

Acquisition and preprocessing of data from infrared depth sensors to be applied for patients monitoring

The raman amplifier in low-complexity PolMux DWDM 1310 nm transmission

Towards 1 Tbit/s SOA-based 1310 nm transmission for local area network/data centre applications

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