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Search results for: ieee 11491, ieee 11494, ieee 11496, ieee 11497
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Using an IEEE1149.1 Test Bus for Fault Diagnosis of Analog Parts of Electronic Embedded Systems
PublicationThe new solution of a BIST called the JTAG BIST for self-testing of analog parts of electronic embedded systems is presented in the paper. The JTAG BIST consists of the BCT8244A and SCANSTA476 integrated circuits of Texas Instruments controlled via the IEEE 1149.1 bus. The BCT8244A is a scan test device with octal buffers, and the SCANSTA476 is a 12-bit ADC with 8 analog input channels. Self-testing approach is based on the fault...
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The impact of the distribution network reconfiguration on active power losses: Selected issues of UPGRID project realization
PublicationThe dynamic development of smart grids allows the use of remote controllable switches to change the configuration of the distribution network. The paper discusses the impact of the distribution system reconfiguration on active power losses, taking into account the typical daily load profiles. Based on modified IEEE 33-bus test distribution system the article presents the method of selection the appropriate sensitivity factor and...
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Łukasz Kulas dr hab. inż.
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Ekranowanie i zabezpieczanie urządzeń oraz systemów - wymagania i badania
PublicationOmówiono zagadnienie badania skuteczności ekranowania urządzeń. Dokonano przeglądu norm i dokumentów normatywnych, dotyczących dopuszczalnych poziomów emisji zaburzeń elektromagnetycznych promieniowanych oraz metodykę ich pomiaru. Opisano wymagania na tłumienność struktur ekranujących (NO-06-A501, NO-06-A201, IEEE 299) w kontekście ograniczania emisji zaburzeń elektromagnetycznych promieniowanych, a także ochrony przed dostępem...
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Design of Resilient Vehicle-to-Infrastructure Systems
PublicationVehicular ad hoc networks (VANETs) have recently gained noticeable attention due to advantages in improving road traffic safety, shaping the road traffic and providing infotainment opportunities to travellers. However, transmission characteristics following from the IEEE 802.11p standard and the high mobility of VANET nodes remarkably reduce the lifetime, reach and capacity of wireless links, and often lead to simultaneous disruptions...
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RSS-Based DoA Estimation in 802.11p Frequency Band Using ESPAR Antenna and PPCC-MCP Method
PublicationIn this paper, the concept of direction of arrival (DoA) estimation using electronically steerable parasitic array radiator (ESPAR) antenna designed to operate in IEEE 802.11p vehicular communication standard has been investigated with respect to different possible elevation angles of a radio frequency (RF) signal impinging the antenna. To this end, two different possible sets of the 3D antenna radiation patterns have been used...
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Marek Turzyński dr hab. inż.
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Wykorzystanie sprzętu komputerowego klasy SOHO do modelowania złożonych rozwiązań sieciowych
PublicationW artykule dokonano oceny możliwosci modelowania złożonych rozwiązań sieciowych, za pomocą modyfikacji otwartoźródłowego sterownika tanich kart ethernetowych. Zaproponowano wykorzystanie koncepcji interfejsów logicznych, znakowania ramek z uzyciem pola Tag standardu IEEE 802.1Q - VLAN oraz wielu pierscieniami DMA do priorytetyzowania klas ruchu. Techniki te, w połaczeniu z implemtacja w sterowniku odpowiednich algorytmów, umożliwiają...
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Diagnostyka Procesów i Systemów DPS`2015
PublicationKonferencję DPS’2015 zorganizowała Katedra Systemów Decyzyjnych i Robotyki na Wydziale Elektroniki Politechniki Gdańskiej wraz z gdańskim oddziałem Towarzystwa Konsultantów Polskich. Współorganizatorami były: Politechnika Warszawska i Uniwersytet Zielonogórski. Patronat nad konferencją objęły najważniejsze obszarowo krajowe instytucje naukowe: Polska Akademia Nauk, Komitet Automatyki i Robotyki, oraz Polskie Stowarzyszenie Pomiarów...
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Acceptance Testing of Software Products for Cloud-Based On-Line Delivery
PublicationSoftware products intended for on-line delivery by distributors serving an open community of subscribers are developed in a specific life-cycle model, in which roles of the major stakeholders are strongly separated, unlike in any other software development model known in software engineering. Its specificity underlines the fact that a distributor of the final product, responsible for its acceptance for publication and delivery...
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Zbigniew Lubośny prof. dr hab. inż.
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Maciej Szczodrak dr inż.
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Kierunki standaryzacji w zdalnym nauczaniu
PublicationDziedzina zdalnego nauczania rozwija się dzięki wielu współpracującym organizacjom i konsorcjom. Opracowały one kilkadziesiąt specyfikacji i modeli referencyjnych, z których część została zaakceptowana jako standardy takich organizacji jak ISO czy IEEE. Artykuł zawiera przegląd najważniejszych instytucji zajmujących się dziedziną zdalnego nauczania oraz wskazuje ich wkład w dotychczasowe dokonania dziedziny. Wskazano także obszary,...
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CFD-based evaluation of current-carrying capacity of power cables installed in free air
PublicationEvaluation of current-carrying capacity of power cables and selection of cross-sectional area of their conductors are mainly performed in accordance with requirements of EN, IEC or IEEE standards. However, these standards do not provide all methods of cables installation and location which occur in practice. Thus, in some cases, performance of advanced modeling of various thermal phenomena, affecting power cables current-carrying...
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2017 Baltic Geodetic Congress
EventsThe intended purpose of the Baltic Geodetic Congress is to integrate geodetic bevy and exchange of experiences and achievements in the fields.
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IEEE Visualization
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Metody radiotransmisji w aplikacjach biomedycznych - 2022/2023
e-Learning CoursesCelem przedmiotu jest zapoznanie studentów z zagadnieniami dotyczącym systemów i sieci radiokomunikacyjnych w pod kątem możliwych zastosowań w biomedycynie. Plan wykładu Podstawowe pojęcia w telekomunikacji (telekomunikacja, informacja, źródła informacji, sygnał, usługa telekomunikacyjna, system telekomunikacyjny, kanał telekomunikacyjny, sieć telekomunikacyjna). Opis sygnałów analogowych w dziedzinie czasu i częstotliwości;...
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Metody radiotransmisji w aplikacjach biomedycznych - 2023/2024
e-Learning CoursesCelem przedmiotu jest zapoznanie studentów z zagadnieniami dotyczącym systemów i sieci radiokomunikacyjnych w pod kątem możliwych zastosowań w biomedycynie. Plan wykładu Podstawowe pojęcia w telekomunikacji (telekomunikacja, informacja, źródła informacji, sygnał, usługa telekomunikacyjna, system telekomunikacyjny, kanał telekomunikacyjny, sieć telekomunikacyjna). Opis sygnałów analogowych w dziedzinie czasu i częstotliwości;...
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IEEE Tencon (IEEE Region 10 Conference)
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Paweł Szczepankowski dr hab. inż.
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A Meta-Analysis of Pulse Arrival Time Based Blood Pressure Estimation
PublicationThe paper presents a preliminary meta-analysis of the sample correlation between pulse arrival time (PAT) and blood pressure (BP). The aim of the study was to verify sample correlation coefficient between PAT and BP using an affine model BP = a · P AT + b for systolic and diastolic blood pressure. The databases included in the search were the IEEE Xplore Digital Library, Springer Link and Google Scholar. Only papers from 2005 to...
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Performance analysis of standard and modified EY-NPMA channel access algo-rithms
PublicationPodczas minionego 10-ciolecia notuje się szybki rozwój lokalnych sieci bezprzewodowych (WLANy). Proponowane rozwiązania dotyczą zarówno sieci opartych o przesył komórek (zgodnych z ATM), jak i sieci pakietowych (zgodnych z E-thernetem). Po rozważeniu drugiego z wymienionych typów sieci, wydaje się dzisiaj, iż pakietowe WLANy będą oparte głównie na dwóch standardach, mianowicie: IEEE 802.11 [6]) - wykorzystującym protokół dostępu...
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Mieczysław Brdyś prof. dr hab. inż.
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Measurements of OF QoS/QoE parameters for media streaming in a PMIPv6 TESTBED WITH 802.11 b/g/n WLANs
PublicationA growing number of mobile devices and the increasing popularity of multimedia services result in a new challenge of providing mobility in access networks. The paper describes experimental research on media (audio and video) streaming in a mobile IEEE 802.11 b/g/n environment realizing network-based mobility. It is an approach to mobility that requires little or no modification of the mobile terminal. Assessment of relevant parameters...
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Metodyka szacowania maksymalnej generacji rozproszonej ulokowanej w elektrowniach wiatrowych
PublicationPraca przedstawia metodykę szacowania maksymalnej mocy zainstalowanej tzw. generacji rozproszonej. Metodyka ta umożliwia określenie wartości maksymalnej mocy, możliwej do przyłączenia w danym miejscu (miejscach) systemu elektroenergetycznego w źródłach generacji rozproszonej, a w tym pozwala na ocenę wariantów przyłączenia. W metodyce wykorzystuje się funkcję celu, która uwzględnia wymagania stawiane źródłom energii elektrycznej...
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Szacowanie maksymalnej mocy generacji rozproszonej w systemie elektroenergetycznym
PublicationW monografii przedstawiono metodykę szacowania maksymalnej mocy zainstalowanej, tzw. generacji rozproszonej. Metodyka ta umożliwia określenie wartości maksymalnej mocy możliwej do przyłączenia w danym miejscu (miejscach) systemu elektroenergetycznego w źródłach generacji rozproszonej, a ponadto pozwala na ocenę wariantów przyłączenia. W metodyce wykorzystuje się funkcję celu, która uwzględnia wymagania wobec źródeł energii elektrycznej...
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IEEE Bioinformatics and Bioengineering
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IEEE Congress on Services
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Wykład prof. Janusza Rajskiego pt. Testowanie układów VLSI
EventsWykład pt. „Testowanie układów VLSI” wygłosi prof. dr hab. inż. Janusz Rajski Mentor, a Siemens Business (USA).
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Jarosław Łuszcz dr hab. inż.
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Comparative Analysis of Reactive Power Compensation Devices in a Real Electric Substation
PublicationA constant worldwide growing load stress over a power system compelled the practice of a reactive power injection to ensure an efficient power network. For this purpose, multiple technologies exist in the knowledge market out of which this paper emphasizes the usage of the flexible alternating current transmission system (FACTS) and presents a comparative study of the static var compensator (SVC) with the static synchronous compensator...
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An Enhanced Reduced Basis Method for Wideband Finite Element Method Simulations
PublicationIn this paper, we present a novel strategy for selecting expansion points in the reduced basis method. A single computation of the error estimator is used to select a few expansion points in the multi-parameter space simultaneously. The number of selected points is determined adaptively, based on the accuracy of the current reduced model. The reliability and efficiency of this proposed approach are illustrated by numerical tests...
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A GPU Solver for Sparse Generalized Eigenvalue Problems with Symmetric Complex-Valued Matrices Obtained Using Higher-Order FEM
PublicationThe paper discusses a fast implementation of the stabilized locally optimal block preconditioned conjugate gradient (sLOBPCG) method, using a hierarchical multilevel preconditioner to solve nonHermitian sparse generalized eigenvalue problems with large symmetric complex-valued matrices obtained using the higher-order finite-element method (FEM), applied to the analysis of a microwave resonator. The resonant frequencies of the low-order...
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Preconditioners with Low Memory Requirements for Higher-Order Finite-Element Method Applied to Solving Maxwell’s Equations on Multicore CPUs and GPUs
PublicationThis paper discusses two fast implementations of the conjugate gradient iterative method using a hierarchical multilevel preconditioner to solve the complex-valued, sparse systems obtained using the higher order finite-element method applied to the solution of the time-harmonic Maxwell equations. In the first implementation, denoted PCG-V, a classical V-cycle is applied and the system of equations on the lowest level is solved...
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Complex Corrosion Monitoring System for Crude Distillation Unit in Form of Neutral Network
PublicationComplex and successful corrosion monitoring of refinery processes can significantly reduce material losses and failure risk. The developed corrosion monitoring system is based on online ultrasonic sensors, ER (electrical resistance) probes, gravimetric method and multipoint analytical analysis of chemical composition of the fluids. Additional online LPR (linear polarization resistance) sensors controlling corrosiveness of sour...
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Scoreboard Architectural Pattern and Integration of Emotion Recognition Results
PublicationThis paper proposes a new design pattern, named Scoreboard , dedicated for applications solving complex, multi-stage, non-deterministic problems. The pattern provides a computational framework for the design and implementation of systems that integrate a large number of diverse specialized modules that may vary in accuracy, solution level, and modality. The Scoreboard is an extension of Blackboard design pattern and comes under...
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Artificial Neural Network (ANN)-Based Voltage Stability Prediction of Test Microgrid Grid
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Hybrid Obfuscation Technique to Protect Source Code From Prohibited Software Reverse Engineering
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Ship Collision Risk Assessment Based on Collision Detection Algorithm
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Designing RBFNs Structure Using Similarity-Based and Kernel-Based Fuzzy C-Means Clustering Algorithms
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Supervised Classification Problems–Taxonomy of Dimensions and Notation for Problems Identification
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Multi-Label Classification for AIS Data Anomaly Detection Using Wavelet Transform
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Fault-tolerant performance of the novel five-phase doubly-fed induction generator
PublicationThe article presents the concept of a new design of a multi-phase doubly-fed induction generator (DFIG). The innovative design approach uses a five-phase power supply from the rotor side of the generator with a three-phase classic stator power supply. Modern three-phase doubly-fed induction generators are the dominant choice for Wind Energy Conversion Systems (WECS). Solutions of this type are sensitive to the loss of at least...
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On Improved-Reliability Design Optimization of High-Frequency Structures Using Local Search Algorithms
PublicationThe role of numerical optimization has been continuously growing in the design of high-frequency structures, including microwave and antenna components. At the same time, accurate evaluation of electrical characteristics necessitates full-wave electromagnetic (EM) analysis, which is CPU intensive, especially for complex systems. As rigorous optimization routines involve repetitive EM simulations, the associated cost may be significant....
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A Cross-Polarisation Discrimination Analysis of Off-Body Channels in Passenger Ferryboat Environments
PublicationThere is a need for investigating radio channels for Body Area Networks considering the depolarisation phenomenon and new types of environments, since these aspects are becoming very important for systems design and deployment. This paper presents an analysis of cross-polarisation discrimination for off-body channels based on a measurement campaign performed in a passenger ferryboat, i.e., where all walls, floors and ceilings are...
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Low-Profile Interdigitated UHF RFID Tag Antenna for Metallic Objects
PublicationThis article presents a novel miniature interdigitated ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna that can be placed on metallic objects. The tag structure comprises two horizontal strip lines, each loaded with seven identical open stubs, and an integrated circuit (IC) chip connected directly to the feed lines in the middle of the structure. The perfect match to the IC chip’s impedance is realized...
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Overview of Approaches for Compensating Inherent Metamaterials Losses
PublicationMetamaterials are synthetic composite structures with extraordinary electromagnetic properties not readily accessible in ordinary materials. These media attracted massive attention due to their exotic characteristics. However, several issues have been encountered, such as the narrow bandwidth and inherent losses that restrict the spectrum and the variety of their applications. The losses have become the principal limiting factor...
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Overview of Metamaterials-Integrated Antennas for Beam Manipulation Applications: The Two Decades of Progress
PublicationMetamaterials (MMs) are synthetic composite structures with superior properties not found in naturally occurring materials. MMs have gained massive attention over the last two decades because of their extraordinary properties, such as negative permittivity and permeability. These materials enable many applications in communication subsystems, especially in the field of antenna design, to enhance gain, bandwidth, and efficiency,...
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Sensing Direction of Human Motion Using Single-Input-Single-Output (SISO) Channel Model and Neural Networks
PublicationObject detection Through-the-Walls enables localization and identification of hidden objects behind the walls. While numerous studies have exploited Channel State Information of Multiple Input Multiple Output (MIMO) WiFi and radar devices in association with Artificial Intelligence based algorithms (AI) to detect and localize objects behind walls, this study proposes a novel non-invasive Through-the-Walls human motion direction...
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Low-Loss Mechanically Tunable Resonator and Phase Shifters in Groove Gap Waveguide Technology
PublicationThis research is focused on the design and realization of high-performance high-power variable phase shifters in groove gap waveguide technology. Specifically, it is shown that the unique characteristic of groove gap waveguides, which is its proper operation without the need for electrical connection between the top and bottom sections of the waveguide, can be used to design mechanically tunable devices. Using the proposed method,...