Search results for: OVERLAPPING COMMUNICATION AND COMPUTATIONS - Bridge of Knowledge

Search

Search results for: OVERLAPPING COMMUNICATION AND COMPUTATIONS

Search results for: OVERLAPPING COMMUNICATION AND COMPUTATIONS

  • Non-Satellite Broadband Maritime Communications for e-Navigation Services

    The development of broadband network access technologies available to users on land has triggered a rapid expansion of a diverse range of services provided by terrestrial networks. However, due to limitations of digital communication technologies in the off-shore area, the maritime ICT systems evolution so far has not followed that trend. Despite the e-navigation initiative defining the set of Maritime Services, the progress in...

    Full text available to download

  • Experimental Comparison of Designed Inductance Coils for Wireless Power Transfer

    Publication
    • V. Shevchenko
    • M. Khomenko
    • I. Kondratenko
    • O. Husev
    • B. Pakhaliuk

    - Electrical, Control and Communication Engineering - Year 2020

    Full text to download in external service

  • The Dark Side of Media and Technology: A 21st Century Guide to Media and Technological Literacy [Book Review]

    Full text to download in external service

  • Standards with cybersecurity controls for smart grid - A systematic analysis

    In recent years numerous standards related to the cybersecurity of smart grids have been published, which led to the challenge for operators in obtaining indications that match their specific objectives and contexts. Although several studies approached this problem by providing more or less comprehensive surveys and overviews of smart grid cybersecurity standards, none of them was dedicated to the actual and important subject of...

    Full text available to download

  • The Analysis and Solutions to the Problems of IPv6 Configuration Migration of Small Networks

    The paper analyzes the problems of IPv4 to IPv6 migration processes and indicates the areas in which migration can be done without expensive replacement of hardware, software and organizational changes. This paper presents the migration tools developed for the SOHO network administrators. The tools provide theoretical knowledge and practical advices on migrating to IPv6 and enable automation of the migration process. The article...

    Full text to download in external service

  • Model of Volunteer Based Systems.

    Publication

    - Year 2013

    There are two main approaches to processing tasks requiring high amounts of computational power. One approach is using clusters of mostly identical hardware, placed in dedicated locations. The other approach is outsourcing computing resources from large numbers of volunteers connected to the Internet. This chapter attempts to formulate a mathematical model of the volunteer based approach to distributed computations and apply it...

  • Morse decompositions for a two-patch vaccination model

    This dataset contains selected results of rigorous numerical computations described in Section 5 of the paper "Rich bifurcation structure in a two-patch vaccination model" by D.H. Knipl, P. Pilarczyk, G. Röst, published in SIAM Journal on Applied Dynamical Systems (SIADS), Vol. 14, No. 2 (2015), pp. 980–1017, doi: 10.1137/140993934.

  • Maciej Sac dr inż.

    Maciej Sac received his M.Sc. degree in Telecommunications from Gdańsk University of Technology, Gdańsk, Poland in 2009. In 2022 he received his Ph.D degree in Information and Communication Technology. His research interests include IP QoS, VoIP, IMS/NGN, SDN networks as well as multimedia services and teletraffic engineering. Currently, he is employed as an assistant professor at Gdańsk University of Technology, Faculty of Electronics,...

  • Paweł Burdziakowski dr inż.

    Paweł Burdziakowski, PhD, is a professional in low-altitude aerial photogrammetry and remote sensing, marine and aerial navigation. He is also a licensed flight instructor and software developer. His main areas of interest are digital photogrammetry, navigation of unmanned platforms and unmanned systems, including aerial, surface, underwater. He conducts research in algorithms and methods to improve the quality of spatial measurements...

  • Applications of the discrete green's function in the finite-difference time-domain method

    In this paper, applications of the discrete Green's function (DGF) in the three-dimensional (3-D) finite-difference time-domain (FDTD) method are presented. The FDTD method on disjoint domains was developed employing DGF to couple the subdomains as well as to compute the electromagnetic field outside these subdomains. Hence, source and scatterer are simulated in separate subdomains and updating of vacuum cells, being of little...

    Full text to download in external service

  • Gender approach to multi-objective optimization of detection systems by pre-selection of criteria

    A novel idea of performing evolutionary computations for solving highly-dimensional multi-objective optimization (MOO) problems is proposed. The information about individual genders is applied. This information is drawn out of the fitness of individuals and applied during the parental crossover in the evolutionary multi-objective optimization (EMO) processes. The paper introduces the principles of the genetic-gender approach (GGA)...

    Full text to download in external service

  • Gender approach to multi-objective optimization of detection systems by pre-selection of criteria

    Publication

    A novel idea of performing evolutionary computations for solving highly-dimensional multi-objective optimization (MOO) problems is proposed. The information about individual genders is applied. This information is drawn out of the fitness of individuals and applied during the parental crossover in the evolutionary multi-objective optimization (EMO) processes. The paper introduces the principles of the genetic-gender approach (GGA)...

    Full text to download in external service

  • Gender approach to multi-objective optimization of detection systems by pre-selection of criteria

    Publication

    A novel idea of performing evolutionary computations for solving highly-dimensional multi-objective optimization (MOO) problems is proposed. The information about individual genders is applied. This information is drawn out of the fitness of individuals and applied during the parental crossover in the evolutionary multi-objective optimization (EMO) processes. The paper introduces the principles of the genetic-gender approach (GGA)...

    Full text to download in external service

  • OpenGL accelerated method of the material matrix generation for FDTD simulations

    Publication

    This paper presents the accelerated technique of the material matrix generation from CAD models utilized by the finite-difference time-domain (FDTD) simulators. To achieve high performance of these computations, the parallel-processing power of a graphics processing unit was employed with the use of the OpenGL library. The method was integrated with the developed FDTD solver, providing approximately five-fold speedup of the material...

    Full text to download in external service

  • Square root RC Nyquist filter of fractional delay

    Publication

    In this paper we propose a discrete-time FIR (finite impulse response) filter which couples the role of square root Nyquist filter with fractional delay filter. This filter enables to substitute for a cascade of square root RC (SRRC) Nyquist filter and fractional delay filter in one device/algorithm. The aim is to compensate for transmission delay in communication system. Statistically defined performances, e.g. BER (bit error...

  • Playing the Sprint Retrospective

    In agile software development, where great emphasis is put on effective informal communication, success depends heavily on human and social factors. However, Scrum does not specify any techniques that aid the human side of software development. In this paper we investigate the use of 6 collaborative games for the Sprint Retrospective. Each game was implemented twice in a Scrum team in Intel Technology Poland. The received feedback...

    Full text available to download

  • Prognozowanie krzywej osiadania pala wierconego z iniekcją ciśnieniową pod podstawą

    Artykuł jest kontynuacją tematyki autora dotyczącą mechanizmu działania iniekcji ciśnieniowej pod podstawą pala wierconego. W poprzednich publikacjach, autor wykazał, że iniekcja ta w głównej mierze uaktywnia zwiększone opory gruntu wzdłuż pobocznicy pala. Na tej podstawie w niniejszym artykule zaprezentowano procedurę obliczeniową prognozowania krzywą osiadania pala wierconego z iniekcją ciśnieniową pod podstawą. Przedstawiono...

    Full text available to download

  • Analiza obudowy wykopu dla budynku z kondygnacją podziemną

    Publication

    W pracy poruszono tematykę analizy obudowy wykopu dla budynku z jedną kondygnacją podziemną, zlokalizowanego w gęstej zabudowie śródmiejskiej. Obliczenia przeprowadzono za pomocą dwóch programów obliczeniowych: GEO5 (moduł: Ściana analiza) i Autodesk Robot Structural Analysis Professional. Całość wyników podsumowano, a wnioski sformułowano w odniesieniu do obecnej sytuacji na rynku budowlanym, charakteryzującej się coraz to trudniejszymi...

    Full text available to download

  • Sławomir Ostrowski dr inż.

    Sławomir Ostrowski is a research and didactic employee employed as an Assistant Professor in the Department of Informatics in Management at the Faculty of Management and Economics of the Gdańsk University of Technology. In 2018, he obtained a PhD in economic sciences in the discipline of management science. A graduate of uniform Master's-engineering studies in Management (specialization: IT Technology Management) at the Faculty...

  • Computer application for railway track realignment

    Publication

    - Year 2014

    The topic of this article is the issue of railway track realignment. For this purpose, a computer software application was created that supports computations and generates a report needed for regulation of the trajectory of the railway. This program gives the ability to import data from measurement of the railway trajectory and then perform the calculation of the mathematical realignment. The result of this calculation is the basis...

    Full text to download in external service

  • A Solution to Image Processing with Parallel MPI I/O and Distributed NVRAM Cache

    The paper presents a new approach to parallel image processing using byte addressable, non-volatile memory (NVRAM). We show that our custom built MPI I/O implementation of selected functions that use a distributed cache that incorporates NVRAMs located in cluster nodes can be used for efficient processing of large images. We demonstrate performance benefits of such a solution compared to a traditional implementation without NVRAM...

    Full text available to download

  • Processing of LiDAR and Multibeam Sonar Point Cloud Data for 3D Surface and Object Shape Reconstruction

    Publication

    Unorganised point cloud dataset, as a transitional data model in several applications, usually contains a considerable amount of undesirable irregularities, such as strong variability of local point density, missing data, overlapping points and noise caused by scattering characteristics of the environment. For these reasons, further processing of such data, e.g. for construction of higher order geometric models of the topography...

    Full text to download in external service

  • How Swiss Watchmaking Brands are Communicating Made in Switzerland

    Publication

    - Year 2023

    Country-of-origin indications, also called “made in” labeling [35], are utilized in marketing strategies by companies to distinguish themselves from others, trying to associate their products with positive characteristics [9]. Swiss watchmaking companies have an iconic status that is essential to their reputation - mainly due to their high quality, precision, innovation, and craftsmanship [7]. They are also using country-of-origin...

    Full text to download in external service

  • Among Friends: The Role of Friendship in Alternative Organizations

    Publication

    - Zarządzanie Mediami - Year 2021

    Friendship, a mutual and profound relationship, permeates history of human culture and occurs in all social situations, including professional and informal human activities. In organizations, it devel­ops through processes of communication and generates a communication culture of kindness and support. Organizational friendship enhances work engagement and satisfaction, as well as helps to promote individual ends. This article investigates...

    Full text available to download

  • Synchronization system for underwater acoustic communications using in shallow waters

    A reliable synchronization system of the transmitted data frame has a significant impact on the efficiency of the underwater communication system. This applies in particular to communication systems dedicated to work in shallow waters, where the phenomenon of multipath permanently occurs. To overcome these difficulties, the concept of a synchronization system consisting of two broadband signals of opposite monotonicity was presented....

    Full text available to download

  • On the origin of surfaces-dependent growth of benzoic acid crystal inferred through the droplet evaporation method

    Publication
    • P. Cysewski
    • M. Przybyłek
    • T. Miernik
    • M. Kobierski
    • D. Ziółkowska

    - STRUCTURAL CHEMISTRY - Year 2015

    Crystal growth behavior of benzoic acid crystals on different surfaces was examined. The performed experiments documented the existence of very strong influence introduced by polar surfaces as glass, gelatin, and polyvinyl alcohol (PVA) on the growth of benzoic acid crystals. These surfaces impose strong orientation effect resulting in a dramatic reduction of number of faces seen with x-ray powder diffractions (XPRD). However,...

    Full text to download in external service

  • On the origin of surfaces-dependent growth of benzoic acid crystal inferred through the droplet evaporation method

    Publication
    • P. Cysewski
    • M. Przybyłek
    • T. Miernik
    • M. Kobierski
    • D. Ziółkowska

    - STRUCTURAL CHEMISTRY - Year 2015

    Crystal growth behavior of benzoic acid crystals on different surfaces was examined. The performed experiments documented the existence of very strong influence introduced by polar surfaces as glass, gelatin, and polyvinyl alcohol (PVA) on the growth of benzoic acid crystals. These surfaces impose strong orientation effect resulting in a dramatic reduction of number of faces seen with x-ray powder diffractions (XPRD). However,...

    Full text to download in external service

  • On the origin of surfaces-dependent growth of benzoic acid crystal inferred through the droplet evaporation method

    Publication
    • P. Cysewski
    • M. Przybyłek
    • T. Miernik
    • M. Kobierski
    • D. Ziółkowska

    - STRUCTURAL CHEMISTRY - Year 2015

    Crystal growth behavior of benzoic acid crystals on different surfaces was examined. The performed experiments documented the existence of very strong influence introduced by polar surfaces as glass, gelatin, and polyvinyl alcohol (PVA) on the growth of benzoic acid crystals. These surfaces impose strong orientation effect resulting in a dramatic reduction of number of faces seen with x-ray powder diffractions (XPRD). However,...

    Full text to download in external service

  • Acceleration of the Discrete Green’s Function Formulation of the FDTD Method Based on Recurrence Schemes

    Publication

    - Year 2019

    In this paper, we investigate an acceleration of the discrete Green's function (DGF) formulation of the FDTD method (DGF-FDTD) with the use of recurrence schemes. The DGF-FDTD method allows one to compute FDTD solutions as a convolution of the excitation with the DGF kernel. Hence, it does not require to execute a leapfrog time-stepping scheme in a whole computational domain for this purpose. Until recently, the DGF generation...

    Full text available to download

  • Conley-Morse graphs for a two-patch vaccination model

    This dataset contains selected results of rigorous numerical computations described in Section 5 of the paper "Rich bifurcation structure in a two-patch vaccination model" by D.H. Knipl, P. Pilarczyk, G. Röst, published in SIAM Journal on Applied Dynamical Systems (SIADS), Vol. 14, No. 2 (2015), pp. 980–1017, doi: 10.1137/140993934.

  • Probabilistic Analysis of Structure Models using Target Random Sampling (TRS)

    Publication

    The work presents testing methods of sensitivity and reliability of mechanical or structural systems. All computations concerned the case of Zigler column, a simple model of a compressed column involving two random variables only. A conclusion was drawn that the standard Monte Carlo method, its reduction variants and the response surface method allow to assess the sensitivity of structural response to the variation of random structural...

    Full text to download in external service

  • A low complexity double-talk detector based on the signal envelope

    A new algorithm for double-talk detection, intended for use in the acoustic echo canceller for voice communication applications, is proposed. The communication system developed by the authors required the use of a double-talk detection algorithm with low complexity and good accuracy. The authors propose an approach to doubletalk detection based on the signal envelopes. For each of three signals: the far-end speech, the microphone...

    Full text available to download

  • A method of packet data addressing for multihop maritime communication systems

  • Challenges in providing support for management of evidence-based arguments

    The paper considers selected challenges related to the application of evidence based arguments and maps them on the tool support level. In particular, we consider: communication and teamwork, handling large arguments, evidence management and integration, argument assessment and communication, change control and reporting, evidence reuse, user data security and argument portfolio management. Then we explain how these challenges...

    Full text to download in external service

  • Voice Multilateration System

    This paper presents an innovative method of locating airplanes, which uses only voice communication between an air traffic controller and the pilot of an aircraft. The proposed method is described in detail along with its practical implementation in the form of a technology demonstrator (proof of concept), included in the voice communication system (VCS). A complete analysis of the performance of the developed method is presented,...

    Full text available to download

  • 5G Technologies in Intelligent Transport Systems - Architectures, Virtualization and Network Slicing

    In the paper, 5G communication technologies implemented for Intelligent Transport Systems are discussed. Firstly, the essence of the 5G system concept is presented, and the problem of network functions virtualization (NFV) is analyzed. Moreover, the principle of virtualization is explained. Secondly, the analysis of network slicing is performed, from the point of view of transport systems implementation in the...

    Full text to download in external service

  • Fast Collaborative Graph Exploration

    Publication

    - LECTURE NOTES IN COMPUTER SCIENCE - Year 2013

    We study the following scenario of online graph exploration. A team of k agents is initially located at a distinguished vertex r of an undirected graph. At every time step, each agent can traverse an edge of the graph. All vertices have unique identifiers, and upon entering a vertex, an agent obtains the list of identifiers of all its neighbors. We ask how many time steps are required to complete exploration, i.e., to make sure...

    Full text to download in external service

  • Fast collaborative graph exploration

    Publication

    - INFORMATION AND COMPUTATION - Year 2015

    We study the following scenario of online graph exploration. A team of k agents is initially located at a distinguished vertex r of an undirected graph. At every time step, each agent can traverse an edge of the graph. All vertices have unique identifiers, and upon entering a vertex, an agent obtains the list of identifiers of all its neighbors. We ask how many time steps are required to complete exploration, i.e., to make sure...

    Full text available to download

  • A Triplet-Learnt Coarse-to-Fine Reranking for Vehicle Re-identification

    Publication

    - Year 2020

    Vehicle re-identification refers to the task of matching the same query vehicle across non-overlapping cameras and diverse viewpoints. Research interest on the field emerged with intelligent transportation systems and the necessity for public security maintenance. Compared to person, vehicle re-identification is more intricate, facing the challenges of lower intra-class and higher inter-class similarities. Motivated by deep...

    Full text to download in external service

  • Prediction of coking dynamics for wet coal charge

    Publication

    - Chemical and Process Engineering : New Frontiers - Year 2015

    A one-dimensional transient mathematical model describing thermal and flow phenomena during coal coking in an oven chamber was studied in the paper. It also accounts for heat conduction in the ceramic oven wall when assuming a constant temperature at the heating channel side. The model was solved numerically using partly implicit methods for gas flow and heat transfer problems. The histories of temperature, gas evolution and internal...

    Full text available to download

  • Project-Based Collaborative Research and Training Roadmap for Manufacturing Based on Industry 4.0

    Publication

    - Year 2023

    The importance of the economy being up to date with the latest developments, such as Industry 4.0, is more evident than ever before. Successful implementation of Industry 4.0 principles requires close cooperation of industry and state authorities with universities. A paradigm of such cooperation is described in this paper stemming from university partners with partly overlapping and partly complementary areas of expertise in manufacturing....

    Full text to download in external service

  • Methods for quality improvement of multibeam and LiDAR point cloud data in the context of 3D surface reconstruction

    Publication

    Point cloud dataset is the transitional data model used in several marine and land remote-sensing applications. During further steps of processing, the transformation of point cloud spatial data to more complex models containing higher order geometric structures like edges and facets may be possible, if an appropriate quality level of input data is provided. Point cloud datasets usually contain a considerable amount of undesirable...

    Full text available to download

  • Detecting Objects of Various Categories in Optical Remote Sensing Imagery Using Neural Networks

    Publication

    - Year 2024

    The effective detection of objects in remote sensing images is of great research importance, so recent years have seen a significant progress in deep learning techniques in this field. However, despite much valuable research being conducted, many challenges still remain. A lot of research projects focus on detecting objects of a single category (class), while correctly detecting objects of different categories is much harder. The...

    Full text to download in external service

  • Patryk Jasik dr inż.

  • Analysis of Impulse Responses Measured in Motion in a Towing Tank

    Publication

    - Electronics - Year 2022

    The growing interest in developing autonomous underwater vehicles (AUVs) and creating underwater sensor networks (USNs) has led to a need for communication tools in underwater environments. For obvious reasons, wireless means of communication are the most desirable. However, conducting research in real conditions is troublesome and costly. Moreover, as hydroacoustic propagation conditions change very significantly, even during...

    Full text available to download

  • Analysis of Impulse Responses Measured in Motion in a Towing Tank

    Publication

    - Year 2023

    The growing interest in developing autonomous underwater vehicles (AUVs) and creating underwater sensor networks (USNs) has led to a need for communication tools in underwater environments. For obvious reasons, wireless means of communication are the most desirable. However, conducting research in real conditions is troublesome and costly. Moreover, as hydroacoustic propagation conditions change very significantly, even during...

    Full text to download in external service

  • Towards Effective Processing of Large Text Collections

    Publication

    In the article we describe the approach to parallelimplementation of elementary operations for textual data categorization.In the experiments we evaluate parallel computations ofsimilarity matrices and k-means algorithm. The test datasets havebeen prepared as graphs created from Wikipedia articles relatedwith links. When we create the clustering data packages, wecompute pairs of eigenvectors and eigenvalues for visualizationsof...

  • Mixed 4-node shell element with assumed strain and stress in 6-parameter theory

    We propose a mixed hybrid 4-node shell elements based on Hu-Washizu principle. Apart from displacements both strains and stress fields are treated as independent fields. The element is derived in the framework of a general nonlinear 6-field shell theory with drilling rotation which is dedicated to the analysis of multifold irregular shells with intersections. The novelty of the presented results stems from the fact that the measures...

    Full text to download in external service

  • GPU Acceleration of Multilevel Solvers for Analysis of Microwave Components With Finite Element Method

    The letter discusses a fast implementation of the conjugate gradient iterative method with ${rm E}$-field multilevel preconditioner applied to solving real symmetric and sparse systems obtained with vector finite element method. In order to accelerate computations, a graphics processing unit (GPU) was used and significant speed-up (2.61 fold) was achieved comparing to a central processing unit (CPU) based approach. These results...

    Full text to download in external service

  • Mixed 4-node shell element with assumed strain and stress in 6-parameter theory

    We propose a mixed hybrid 4-node shell elements based on Hu-Washizu principle. Apart from displacements both strains and stress fields are treated as independent fields. The element is derived in the framework of a general nonlinear 6-field shell theory with drilling rotation which is dedicated to the analysis of multifold irregular shells with intersections. The novelty of the presented results stems from the fact that the measures...

    Full text to download in external service