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Shape Memory Alloy-Based Fluidically Reconfigurable Metasurfaced Beam Steering Antenna
PublikacjaA low-cost actuator-based fluidically programmable metasurface (FPMS) antenna is proposed to solve the slow tuning speed problem of the manually fluidic based reconfigurable antennas. The FPMS-based antenna is probe-fed and comprises a 4 × 4 square ring metasurface as a superstrate. Moreover, two shape memory alloy (SMA)-based electrically-controlled actuators are employed in the design for controlling the position of the 3D-printed...
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User Authentication by Eye Movement Features Employing SVM and XGBoost Classifiers
PublikacjaDevices capable of tracking the user’s gaze have become significantly more affordable over the past few years, thus broadening their application, including in-home and office computers and various customer service equipment. Although such devices have comparatively low operating frequencies and limited resolution, they are sufficient to supplement or replace classic input interfaces, such as the keyboard and mouse. The biometric...
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Predicting emotion from color present in images and video excerpts by machine learning
PublikacjaThis work aims at predicting emotion based on the colors present in images and video excerpts using a machine-learning approach. The purpose of this paper is threefold: (a) to develop a machine-learning algorithm that classifies emotions based on the color present in an image, (b) to select the best-performing algorithm from the first phase and apply it to film excerpt emotion analysis based on colors, (c) to design an online survey...
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A Parallel Corpus-Based Approach to the Crime Event Extraction for Low-Resource Languages
PublikacjaThese days, a lot of crime-related events take place all over the world. Most of them are reported in news portals and social media. Crime-related event extraction from the published texts can allow monitoring, analysis, and comparison of police or criminal activities in different countries or regions. Existing approaches to event extraction mainly suggest processing texts in English, French, Chinese, and some other resource-rich...
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Global Complex Roots and Poles Finding Algorithm in C × R Domain
PublikacjaAn algorithm to find the roots and poles of a complex function depending on two arguments (one complex and one real) is proposed. Such problems are common in many fields of science for instance in electromagnetism, acoustics, stability analyses, spectroscopy, optics, and elementary particle physics. The proposed technique belongs to the class of global algorithms, gives a full picture of solutions in a fixed region ⊂ C × R and...
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Four Degree-of-Freedom Hydrodynamic Maneuvering Model of a Small Azipod-Actuated Ship With Application to Onboard Decision Support Systems
PublikacjaThe main contribution of this paper is a numerical ship motion model of NTNU’s research vessel Gunnerus, capturing the surge, sway, roll, and yaw dynamics when sailing in uniform and steady currents. The model utilizes a crossflow drag formulation for the transverse viscous loads, and it includes a nonlinear formulation for the propulsion and steering loads provided by two azipod thrusters. A wide range of experimental data obtained...
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Miniaturized Inline Bandpass Filters Based on Triple-Mode Integrated Coaxial-Waveguide Resonators
PublikacjaThis work presents a design technique to implement miniaturized cross-coupled bandpass filters in inline physical configurations based on triple-mode resonators. Triple-mode resonances are obtained by using integrated coaxial-waveguide cavity resonators. They consist of two coaxial conducting posts placed in the sidewalls of a rectangular waveguide cavity. In the proposed triplet, a transmission zero (TZ) can be positioned at any...
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Using Continuous Integration Techniques in Open Source Projects – An Exploratory Study
PublikacjaFor a growing number of software projects, continuous integration (CI) techniques are becoming an essential part of the process. However, the maturity of their adoption in open source projects varies. In this paper, we present an empirical study on GitHub repositories to explore the use of continuous integration techniques in open source projects. Following the Goal-Question-Metric (GQM) approach, 3 research questions and 7 metrics...
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Fast multi-objective optimization of antenna structures by means of data-driven surrogates and dimensionality reduction
PublikacjaDesign of contemporary antenna structures needs to account for several and often conflicting objectives. These are pertinent to both electrical and field properties of the antenna but also its geometry (e.g., footprint minimization). For practical reasons, especially to facilitate efficient optimization, single-objective formulations are most often employed, through either a priori preference articulation, objective aggregation,...
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Stress Monitoring System for Individuals with Autism Spectrum Disorders
PublikacjaIn this article, a stress monitoring system tailored for individuals with Autism Spectrum Disorders (ASD) and developed for the educational institution is presented. People with ASD face problems with effective stress management due to their high self-perceived levels of stress, poor ability to cope with it, and dificulties with the accurate detection of the source of stress. Consistently, being able to measure stress appears to...
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Simulation-Driven Antenna Modeling by Means of Response Features and Confined Domains of Reduced Dimensionality
PublikacjaIn recent years, the employment of full-wave electromagnetic (EM) simulation tools has become imperative in the antenna design mainly for reliability reasons. While the CPU cost of a single simulation is rarely an issue, the computational overhead associated with EM-driven tasks that require massive EM analyses may become a serious bottleneck. A widely used approach to lessen this cost is the employment of surrogate models, especially...
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eFRADIR: An Enhanced FRAmework for DIsaster Resilience
PublikacjaThis paper focuses on how to increase the availability of a backbone network with minimal cost. In particular, the new framework focuses on resilience against natural disasters and is an evolution of the FRADIR/FRADIR-II framework. It targets three different directions, namely: network planning, failure modeling, and survivable routing. The steady state network planning is tackled by upgrading a sub-network (a set of links termed...
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FPGA Based Real Time Simulations of the Face Milling Process
PublikacjaThe article presents a successful implementation of the milling process simulation at the Field-Programmable Gate Array (FPGA). By using FPGA, very rigorous Real-Time (RT) simulation requirements can be met. The response time of the FPGA simulations is significantly reduced, and the time synchronization is better than in a typical RT system implemented in software. The FPGA-based approach is characterized by enormous flexibility...
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Assessment of Connectivity-based Resilience to Attacks Against Multiple Nodes in SDNs
PublikacjaIn Software Defined Networks (SDNs), the control plane of a network is decoupled from its data plane. For scalability and robustness, the logically centralized control plane is implemented by physically placing different controllers throughout the network. The determination of the number and placement of controllers is known as the Controller Placement Problem (CPP). In the regular (i.e., failure-free) state, the control plane...
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Concurrent Video Denoising and Deblurring for Dynamic Scenes
PublikacjaDynamic scene video deblurring is a challenging task due to the spatially variant blur inflicted by independently moving objects and camera shakes. Recent deep learning works bypass the ill-posedness of explicitly deriving the blur kernel by learning pixel-to-pixel mappings, which is commonly enhanced by larger region awareness. This is a difficult yet simplified scenario because noise is neglected when it is omnipresent in a wide...
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Propozycja optymalizacji wyboru interfejsu bezprzewodowego w heterogenicznej sieci dostępowej
PublikacjaSzybki rozwój sieci bezprzewodowych oraz ich szeroka dostępność sprawiają, iż ich użytkownicy coraz częściej znajdują ię w obszarze działania kilku róznych bezprzewodowych systemów zapewniajacych dostęp do zasobów internetu. Środowisko takie nazywamy heterogenicznym. Integruje ono bowiem zróżnicowane technologicznie sieci w tym najczęściej rozwiązania standardu IEEE.*02.11 oraz sieci komórkowe zarówno 3G, jak 4G, ale także4 systemy...
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Evaluation of Connectivity Gaps Impact on TCP Transmissions in Maritime Communications
PublikacjaMany organizations and research working groups, including among others IEEE, ITU, ETSI and IMO are currently working towards improvements in communication of different types of vehicles (cars, trains, planes and vessels) and upgrading utilities and services offered to their crews and passengers travelling all over the world. The paper deals with selected aspects of the TCP protocol connectivity in maritime wireless networks. The...
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IEEE International Multioptic Conference
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IEEE Workshop on Organic Computing
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IEEE Symposium on Security and Privacy
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IEEE International Test Conference
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Eurographics/IEEE Symposium on Visualization
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IEEE Swarm Intelligence Symposium
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IEEE Vehicular Technology Conference
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IEEE Conference on Computational Complexity
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IEEE Computer Communications Workshop
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IEEE International Conference on Communications
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IEEE Symposium on Computers and Communications
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IEEE Workshop on Memetic Algorithms
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IEEE International Conference on Networks
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IEEE LAN/MAN Workshop
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IEEE Software Engineering Workshop
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IEEE Conference on Decision and Control
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IEEE Information Visualization Conference
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IEEE International Symposium on Multimedia
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IEEE Symposium on Computer Arithmetic
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IEEE Global Internet Symposium
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IEEE Congress on Evolutionary Computation
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IEEE Intell Network Workshop
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IEEE Global Telecommunications Conference
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IEEE Symposium on Intelligent Agents
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IEEE Workshop on Speech Coding
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IEEE International Symposium on Wearable Computers (IEEE International Symposium on Wearable Computing)
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IEEE International Symposium on Rapid System Prototyping (IEEE Symposium on Rapid Prototyping)
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Efektywne kształtowanie widma radiowego sygnału impulsowego (IR UWB) dla potrzeb wymagań międzysystemowej kompatybilności elektromagnetycznej
PublikacjaW części wstępnej zawarto opis uwarunkowań prawnych i normalizacyjnych dotyczących transmisji ultraszerokopasmowych, opisana jest także ultraszerokopasmowa technika radia impulsowego. Następnie przedstawiono znane w literaturze sposoby wpływania na kształt widma transmisji impulsowych, zarówno przez dobór nadawanych impulsów jak i zmiany w strukturze czasowej nadawanej sekwencji. Główną część pracy stanowi opis proponowanych nowych...
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IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE Virtual Reality Conference)
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REALIZACJA ELEMENTÓW SKŁADOWYCH ŁĄCZA RADIOWEGO Z UŻYCIEM URZĄDZEŃ RADIA PROGRAMOWALNEGO TYPU USRP
PublikacjaPrzez ostatnią dekadę projektowanie systemów radiowych zaczęło w coraz większym stopniu polegać na cyfrowym przetwarzaniu sygnałów. Możliwość i moc obliczeniowa procesorów ogólnego przeznaczenia GPP (General Purpose Processor), procesorów sygnałowych DSP (Digital Signal Processor) oraz układów programowalnych FPGA (Field Programmable Gate Array) znacząco wzrosła zgodnie z prawem Moor’a. Naturalnym następstwem tego trendu było większe...
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METODA WIELOKRYTERIALNEJ OCENY PRZEBUDOWY UKŁADÓW TOROWYCH NA SZLAKACH
PublikacjaRozprawa doktorska dotyczy zagadnienia projektowania układów geometrycznych toru kolejowego w procesie modernizacji linii kolejowych. Scharakteryzowano główne cechy dotyczące tej tematyki w oparciu o literaturę polską i zagraniczną, w tym przepisy branżowe. Przedstawiono czynniki wpływające na projektowanie modernizacji linii kolejowych. Określono wartości dopuszczalne parametrów kinematycznych i geometrycznych. Specyfika omawianego...
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IEEE International Conference on Multimedia and Expo
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IEEE Conference on Information, Decision and Control
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