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Search results for: SYSTEM EDI
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System Supporting Speech Perception in Special Educational Needs Schoolchildren
PublicationThe system supporting speech perception during the classes is presented in the paper. The system is a combination of portable device, which enables real-time speech stretching, with the workstation designed in order to perform hearing tests. System was designed to help children suffering from Central Auditory Processing Disorders.
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Implementation and testing of Level 2 security architecture for the IIP System
PublicationSystem IIP definiuje kilka równoległych Internetów (PI), w tym jeden oparty na IPv6, dwa na rozwiązaniach post-IP oraz sieć zarządzania, pracujących na wspólnej infastrukturze komunikacyjnej. System ma architekturę 4-poziomową, w której poziom 2 odpowiada za tworzenie zasobów wirtualnych PI. W artykule omawiana jest trójwarstwowa architektura bezpieczeństwa proponowana dla przeciwdziałania zagrożeniom wprowadzania obcego ruchu...
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Wizyjny system monitoringu stanu nakładek ślizgowych odbieraków prądu
PublicationEksploatowane do niedawna w Polsce nakładki kolejowych odbieraków prądu były wykonywane w postaci styków miedzianych. Na początku 2011 r. przeprowadzono kompleksową zmianę typu nakładek stykowych z miedzianych na metalizowane węglowe.Wraz z wprowadzeniem nakładek węglowych istnieje potrzeba opracowania nowych metod diagnostyki tego istotnego elementu toru zasilania pojazdu. Celem diagnostyki jest wykrycie uszkodzonych i nadmiernie...
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Evaluation of the fast impedance spectroscopy method in the laboratory measurement system
PublicationIn this paper the method for fast impedancespectroscopy of technical objects with very high impedance(|Zx| ≥ 1 GΩ) is evaluated by means of simulation and practicalexperiment. The method is based on excitation of an object, witha square pulse and measurements of voltage and currentresponses with DAQ card. The object impedance spectrum isobtained with use of continuous Fourier transform. Someimprovements of the method concerned...
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Integration of inertial sensors and GPS system data for underwater navigation
PublicationThe Inertial Navigation System (INS) is usually employed to determine the position of an underwater vehicles, like Remotely Operated Vehicles (ROV) and, more recently, Autonomous Underwater Vehicle (AUV). The accuracy of the position provided by the INS, which uses accelerometers and gyroscopes, deteriorates with time. An external aiding sources such as the Global Positioning System (GPS) can be employed to reduce the error growth...
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Secure transmission of visual image in the VTS system using fingerprinting
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Distributed System For Noise Threat Evaluation Based On Psychoacoustic Measurements
PublicationAn innovative system designed for the continuous monitoring of acoustic climate of urban areas was presentedin the paper. The assessment of environmental threats is performed using online data, acquired through a grid ofengineered monitoring stations collecting comprehensive information about the acoustic climate of urban areas.The grid of proposed devices provides valuable data for the purpose of long and short time acoustic climateanalysis....
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Innovative Resistojet Propulsion System—Use in Robotic Space Platforms
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Research and Development of Inductive-Resonant Wireless Power Transfer System
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The optimisation of induction heating system based on multiquadric function approximation
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Design of versatile ASIC and protocol tester for CBM readout system
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Hypertension is associated with dysfunction of both peripheral and central auditory system
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Central sympathetic nervous system reinforcement in obstructive sleep apnoea
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Information System Purchase and Integration Contingencies When Companies Merge
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Aquaporins in the male reproductive system: A chance for paternity or a road to nowhere?
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The Towers of Hanoi as a Cyber-Physical System Education Case Study
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Genetic Programming with Negative Selection for Volunteer Computing System Optimization
PublicationVolunteer computing systems like BOINC or Comcute are strongly supported by a great number of volunteers who contribute resources of their computers via the Web. So, the high efficiency of such grid system is required, and that is why we have formulated a multi-criterion optimization problem for a volunteer grid system design. In that dilemma, both the cost of the host system and workload of a bottleneck host are minimized. On...
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Existence of solutions for a coupled system of difference equations with cousal operators
PublicationPraca dotyczy układów równań różnicowych. Podano warunki dostateczne na istnienie rozwiązań takich problemów. Badano również nierówności różnicowe.
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A Hyperdense Semantic Domain for Discontinuous Behavior in Physical System Models
PublicationMultiple time models have been proposed for the formalization of hybrid dynamic system behavior. The superdense notion of time is a well-known time model for describing event-based systems where several events can occur simultaneously. Hyperreals provide a domain for defining the semantics of hybrid models that is elegantly aligned with first principles in physics. This paper discusses the value of both time models and shows how...
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Superkomputerowy system identyfikacji pojazdów na podstawie numerów rejestracyjnych
PublicationOpisano sposób identyfikacji pojazdów na podstawie numerów rejestracyjnych. Scharakteryzowano etapy identyfikacji i wymieniono algorytmy stosowane w ramach implementacji rozwiązania ESIP (Elektroniczny System Identyfikacji Pojazdów). Skuteczność zastosowanych algorytmów porównano z innymi rozwiązaniami dostępnymi na rynku. Opisano wdrożenie rozwiązania na superkomputerze GALERA. System ESIP umożliwia skuteczną identyfikację pojazdów...
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Control System Design for Dynamic Positioning using Vectorial Backstepping
PublicationThe problem of synthesis a dynamic positioning system for low frequency model of surface vessel was considered in this paper. The recursive vectorial backstepping control design was used to keep a fixed position and heading in presence of wave disturbances. The passive observer was introduced to smooth the measurements and to estimate the velocities needed for the control algorithm. The computer simulation results were given to...
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PI observer stability and application in an induction motor control system
PublicationThe paper discusses the problem of stability of a proportional-integral Luenberger observer, designated for the state variables reconstruction of a linear, time-invariant dynamical system.
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An Analysis of Uncertainty and Robustness of Waterjet Machine Positioning Vision System
PublicationThe paper presents a new Automatic Waterjet Positioning Vision System (AWPVS) and investigates components of workpiece positioning accuracy. The main purpose of AWPVS is to precisely identify the position and rotation of a workpiece placed on a waterjet machine table. Two webcams form a basis for the system, and constitute its characteristics. The proposed algorithm comprises various image processing techniques to assure a required...
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Asynchronous Networked Estimation System for Continuous Time Stochastic Processes
PublicationIn this paper we examine an asynchronous networked estimation system for state estimation of continuous time stochastic processes. Such a system is comprised of several estimation nodes connected using a possibly incomplete communication graph. Each of the nodes uses a Kalman filter algorithm and data from a local sensor to compute local state estimates of the process under observation. It also performs data fusion of local estimates...
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Robust Monitoring of Water Quality in Drinking Water Distribution System
PublicationThe paper develops a novel open loop set bounded observer for robust estimation of water quality in DWDS based on the advanced nonlinear quality dynamics model including disinfections by-products (DBPs). The observer utilises a cooperativeness of the quality dynamics model and is computationally efficient, hence applicable to on-line quality monitoring. The simulation results illustrate its good and sustainable performance.
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System inteligentnego budynku w oparciu o sieci bezprzewodowe
PublicationW artykule przedstawiono prototypowy system automatyki inteligentnego budynku wykorzystujący protokół ZigBee. W ramach pracy przedstawiono ogólne rozważania konstrukcji elementów aktywnych sieci. Przedstawiono też oryginalne opracowania węzłów sieci stanowiących rozszerzenie idei intelignetnego budynku o urządzenia pomocne w diagnostyce medycznej. Przeanalizowano problem i zaproponowano koncepcję poprawy bezpieczeństwa danych transmitowanych...
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3D scanning system for railway current collector contact strips
PublicationUndisturbed collection of current from a contact wire of the catenary constitutes one of the basic elements in reliable operation of electrified rail transport, particularly when vehicles move at high speed. Quality of current collection is influenced by the construction of catenary and current collectors, as well as by the technical condition and regulation of these two elements. Total contact force of a current collector head...
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System of wireless magnetic sensors for detection and identification of ferromagnetic vehicles
PublicationThe paper presents the results of deformation of the Earth's magnetic field by land vehicles. Basing on the analysis of the shape of the magnetic field deformation, it is possible to detect and identify a vehicle. In order to eliminate the interference of the Earth's magnetic field by the environment, the measurements were performed in a differential configuration. Under a development project a wireless system of magnetic sensors...
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The Doppler effect in a bistatic system for determining the position of moving targets
PublicationThe article presents the theoretical analysis and the results of numerical calculations of the Doppler effect it occurs in a system designed to determine the position and speed of a moving target. The transmitter is the source of the signal and it emits a sinusoidal, acoustic and continuous wave. Signal reflected off a moving target is received by four hydrophones. Based on the signals, four Doppler shifts are determined and inserted...
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Modelling of power electronic compensators for the analysis of power system operation
PublicationThe article presents selected methods of modelling power electronic compensators in order to analyze their operation in the power systems. Advantages and disadvantages of models have been shown with an indication of their usefulness for modelling specific phenomena.
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Diagnostic system of wheeled tractors detecting four defect's categories
PublicationIn a classical approach to damage diagnosis, the technical condition of an analyzed machine is identified based on the measured symptoms, such as performance, thermal state or vibration parameters. In wheeled tractor the fundamental importance has monitoring and diagnostics during exploitation concerning technical inspection and fault element localizations. The main functions of a diagnostic system are: monitoring tractor components...
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Advanced surveillance and operational communication system employing mobile terminals
PublicationDistributed surveillance and operational communications system based on XMPP protocol is presented. Its architecture and assumptions leading to the depicted design are shown. Features of XMPP protocol are portrayed with the emphasis on those most important in the context of the application. Real-time multimedia transmission with the use of Jingle/XMPP extension is discussed. The use of PDA-class computers as mobile terminals is...
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Supporting Software Project Management Processes Using the Agent System
PublicationThe natural development of information technology area stimulates intense growth of various technologies which support basic organization processes. The range of technologies implies appropriate management thereof, as well as accurate correspondence with conducted activities. Abandonment of activities within individual branches in favour of project approach to performed assignments (especially those connected with software development)...
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Effective and environmental friendly propulsion system for small fishing cutter
PublicationW pracy przedstawiono opis systemu napędowego małego kutra rybackiego oraz układ napędu i sterowania hydraulicznego wszystkich istotnych jego urządzeń. Zaprezentowany system stosunkowo nowoczesny i efektywny, a przy tym ekologiczny został zainstalowany na małym kutrze rybackim zaprojektowanym na Wydziale Oceanotechniki i Okrętownictwa Politechniki Gdańskiej. We wrześniu 2002 roku kuter rozpoczął regularne połowy na Bałtyku i jak...
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Validation of an Agent and Ontology-based Information Technology Assessment System
PublicationThe aim of this paper is to present a new method of the validation of an Agent and Ontology-based Information Technology Assessment System. In the introduction part of the paper, the characteristics of the proposed multi-agent system are presented. Next, some important details regarding the ontology functionality of this system are described and an approach to its verification process is proposed. The approach employs semantic...
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Asynchroniczny, naziemny i samoorganizujący się system radiolokalizacyjny - AEGIR
PublicationW niniejszym artykule przedstawiono opis budowy i działania demonstratora technologicznego asynchronicznego, naziemnego system radiolokalizacyjnego, który został opracowany w Politechnice Gdańskiej. Opisano podstawowe elementy budowy tego systemu, przedstawiono wnioski oraz analizę efektywności jego działania.
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Studying the effectiveness of a modernized cathodic protection system for an offshore platform
PublicationPrzedstawiono dokonaną modernizację starego systemu ochrony katodowej nóg platformy morskiej oraz omówiono wykonane badania skuteczności przeciwkorozyjnej zastosowanego rozwiązania. Modernizacja polegała na podłączeniu do nóg platformy układów anod galwanicznych umieszczonych na dnie morza. Skuteczność działania systemu oceniono na podstawie pomiarów profili potencjałowych nóg platformy. Po podłączaniu kolejnych układów anod...
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Wieloczynnikowy system wczesnego ostrzegania firm przed ryzykiem upadłości
PublicationArtykuł dotyczy prognozowania upadłości przedsiębiorstw w Polsce. Porównano w nim dwie metody prognozowania zagrożeń firm upadłością: wieloczynnikowy system wczesnego ostrzegania oparty na działaniu sztucznej inteligencji oraz analizę dyskryminacyjną.
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Polish DGPS System: 1995–2017 – Study of Positioning Accuracy
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Hybrid Excited Synchronous Machine with Wireless Supply Control System
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Web-Based Integrated Timetable Information System for Railways and Airlines
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Value stream mapping as a tool to improve environmental management system
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Fuzzy decision support system for the control of budget and schedule in SPM
PublicationObiektem rozważań jest komputerowy system wspierania decyzji kierowniczych w zakresie zarządzania budżetem i harmonogramem przy realizacji projektów informatycznych. Omawiany system opary jest na dynamicznych modelach rozmytych podlegających bieżącemu dostrajaniu na podstawie danych z obserwacji zarządzanego procesu. Wstępny projekt modeli rozmytych oparty został na danych zarządczych pochodzących z realizacji dwu projektów informatycznych....
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GNSS-based multi-sensor system for structural monitoring applications
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A system solution for integration of process planning and control in flexible manufacturing
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<title>Status of LLRF system development for European XFEL</title>
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Hardware Implementation of Real Time Cavity Parameters Identification System
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Software layer for FPGA-based TESLA cavity control system
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Advanced camera image data acquisition system for Pi-of-the-Sky
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Low latency control board for LLRF system: SIMCON 3.1
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