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Search results for: STANDARD SAX
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Interactive Information Search in Text Data Collections
PublicationThis article presents a new idea for retrieving in text repositories, as well as it describes general infrastructure of a system created to implement and test those ideas. The implemented system differs from today’s standard search engine by introducing process of interactive search with users and data clustering. We present the basic algorithms behind our system and measures we used for results evaluation. The achieved results...
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Effect of geometric imperfections on aluminium silo capacities
PublicationAn aluminum silo with initial imperfections is analysed. Two types of imperfections are considered. The first one takes the form of local indentations in the shell; their size and range are adopted on the basis of the standard guidelines. The second type is a global imperfection described through the use of its eigenforms and by means of two-dimensional random fields. The calculations are limited to two cases of loading: negative...
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Laminated plates and shells - first ply failure analysis within 6-parameter shell theory
PublicationThis work describes Tsai-Wu and Hashin criteria modifications, dictated by nonlinear 6-parameter shell theory with asymmetric strain measures and drilling rotation. The material law is based on standard orthotropic elastic constants for a non-polar continuum, under plane state of stress. First ply failure loads of cylindrical panel subjected to pressure and flat compressed plate are estimated by means of Finite Element Analysis....
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Multimedia in teaching economics and management in higher education.
PublicationNowadays, the use of multimedia teaching materials at universities makes a standard practice. However their saturation is still quite low comparing to the expectations of students - the main consumers of the information contained therein. This article will present the results of research conducted among students of Management and Engineering Management carried at the Technical University of Gdańsk. Some students of Computer Science...
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Efficient quadrature for fast oscillating integralof paraxial optics
PublicationThe study concerns the determination of quadrature for the integral solutionof the paraxial wave equation. The difficulty in computation of the integral isassociated with the rapid change of the integrand phase. The developed quadraturetakes into account the fast oscillating character of the integrand. The presentedmethod is an alternative to the commonly used methods based on the use of theFourier transform. The determination...
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Weldability of S460ML High Strength Low Alloy Steel in Underwater Conditions
PublicationThe paper presents experimental evaluation of susceptibility of the high strength S460ML steel to cold cracking in the conditions of wet welding with the use of covered electrodes. From the results of Tekken tests it was found out that the investigated steel was characterised, in the conditions of the carried out experiments (underwater wet welding and air welding with rutile electrodes), of high susceptibility to cold cracking....
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Probabilistic Analysis of Structure Models using Target Random Sampling (TRS)
PublicationThe 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...
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Modeling BIM Objects From Point Clouds. Examples
PublicationThe article presents several ways to obtain BIM (Building Information Modeling) models from point clouds using standard commands in Revit 2018. In Revit geometric forms are possible to obtain in project, family or conceptual environments. Efficient modeling requires knowledge of methods of creating families and components in these environments and ways to combine them. Modeling methods with system and loadable families are presented,...
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Interactive Application for Visualization of the Basic Phenomena in RF and Microwave Devices
PublicationAn interactive computer application visualizing the basic phenomena in RF and microwave devices is presented. Such kind of educational package can be a very helpful tool for the students as well as for the teachers (of electronics and related fields). This paper is focused on three exemplary problems only and involves: movement of electric charge, filtering of electromagnetic waves and interference phenomena in antenna arrays. The...
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Poly(hydroxybutyrate-co-hydroxyvalerate) as a biodegradable binder in a negative electrode material for lithium-ion batteries
PublicationIn this work, graphite-based negative electrode for lithium-ion battery consisting a novel and biodegradable binder poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is compared with standard graphite electrode with polyvinylidene fluoride (PVDF) as a binder. The rate and cycling performance of lithium ion insertion/extraction of electrodes with PHBV in a half-cell configuration are evaluated. Moreover, on the basis of the electrochemical...
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Zdolność jednostki do kontynuowania działalności w świetle przepisów o rachunkowości i metody jej oceny
PublicationW artykule ukazano w sposób szczegółowy uregulowania dotyczące zdolności jednostki do kontynuacji działalności. Autor nawiązał zarówno do krajowych przepisów (ustawa o rachunkowości, normy wykonywania zawodu biełgego rewidenta), jak i Międzynarodowych Standardów Rachunkowości oraz Międzynarodowych Standardów Sprawozdawczości Finansowej. Ponadto przedstawiono metody oceny jednostek, z punktu widzenia ich zdolności do kontynuowania...
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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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The situation of young mothers in the Polish labour market
PublicationThe purpose of the article is to present the situation of young women combining professional and paternal responsibilities in the Polish labour market. The papaer presents the results of interviews conducted with six young mothers.
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A Nonlinear Model of a Mesh Shell
PublicationFor a certain class of elastic lattice shells experiencing finite deformations, a continual model using the equations of the so-called six-parameter shell theory has been proposed. Within this model, the kinematics of the shell is described using six kinematically independent scalar degrees of freedom — the field of displacements and turns, as in the case of the Cosserat continuum, which gives reason to call the model under consideration...
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Application in circular sawing machines of the experimental results of investigations of the chip removing system operation
PublicationThe experimental results of the chip removing system operation are presented. The main aim of them was to optimize suction system of the panel saw Fx3 and its follower Fx550. The attention was focused on the upper casing, which was the part of removing system. Within the framework of the work a systematic experimental study of pressure distribution in the casing during operation of the selected rotational speed of saw blade with...
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MAC-layer vulnerabilities of IEEE 802.11 wireless networks
PublicationDla sieci bezprzewodowych pracujących według standardu IEEE 802.11 przeprowadzono analizę symulacyjną i badania pomiarowe w specjalnie zestawionej konfiguracji w celu określenia rozdziału pasma transmisyjnego pomiędzy stacje uczciwe i stacje atakujące wybrane mechanizmy protokołu MAC.
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Particulate Material Analysis in Air
PublicationThe chapter presents the methods and techniques used to asses the PM10 in air and different instruments typically used in analysis of PM, including sampling of particle by using filters and other systems. Besides the methods recommended by different national standards the other methods, especially electronic microscopy are also described.
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Tyre/road noise measurements on ISO tracks using the modified CPX method
PublicationTyre rolling noise test method specified in the UNECE Regulation 117 is directly used in the Tyre Labelling Directive. Noise level specified on EU Tyre Label of each new tyre available on the European market was determined based on vehicle coast-by noise measurements performed on the standard reference road surface proscribed in the ISO 10844:2014. Available data from investigations by the vehicle and tyre industry and results...
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Performance evaluation of unified memory and dynamic parallelism for selected parallel CUDA applications
PublicationThe aim of this paper is to evaluate performance of new CUDA mechanisms—unified memory and dynamic parallelism for real parallel applications compared to standard CUDA API versions. In order to gain insight into performance of these mechanisms, we decided to implement three applications with control and data flow typical of SPMD, geometric SPMD and divide-and-conquer schemes, which were then used for tests and experiments. Specifically,...
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Study on some of the strength properties of soft clay stabilized with plastic waste strips
PublicationIt is well known that if plastic wastes are not well managed, it has a negative impact on the environment as well as on human health. In this study, recycling plastic waste in form of strips for stabilizing weak subgrade soil is proposed. For this purpose, a weak clay soil sample was mixed with 0.2%, 0.3%, and 0.4% of plastic strips by weight of soil, and the experimental results were compared to the control soil sample with 0%...
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Wykorzystanie WAP i WML w usługach bezprzewodowych.
PublicationOpisano schemat transakcji przy wykorzystaniu protokołu WAP. Zaprezentowano język znaczników WML dla urządzeń bezprzewodowych. Przedstawiono narzędzia służące do tworzenia aplikacji opartych o protokół WAP. Wskazano na kirunki rozwoju protokołu i inne standardy o podobnych funkcjach.
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Architektura i zastosowanie serwerów aplikacji.
PublicationPrzedstawiono podstawowe pojęcia związane z architekturą serwerów sieciowych, serwerów WWW i serwerów aplikacji. Przeanalizowano główne problemy ich projektowania. Zwrócono uwagę na rozwój serwerów aplikacji opisując dwa standardy NET i J2EEE, oraz podając dziedziny ich zastosowań.
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Zasady stosowania kanalizacyjnej studzienki rewizyjnej I
PublicationWarunki funkcjonowania. Srednica studzienki. Zasady rozmieszczania. Zmiany w stosunku do tradycyjnych standardów
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Improving depth maps of plants by using a set of five cameras
PublicationObtaining high-quality depth maps and disparity maps with the use of a stereo camera is a challenging task for some kinds of objects. The quality of these maps can be improved by taking advantage of a larger number of cameras. The research on the usage of a set of five cameras to obtain disparity maps is presented. The set consists of a central camera and four side cameras. An algorithm for making disparity maps called multiple...
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Instrumental measurement of odour nuisance in city agglomeration using electronic nose
PublicationThe paper describes an operation principle of odour nuisance monitoring network in a city agglomeration. Moreover, it presents the results of investigation on ambient air quality with respect to odour obtained during six-month period. The investigation was carried out using a network comprised of six prototypes of electronic nose and Nasal Ranger field olfactometers employed as a reference method. The monitoring network consisted...
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Mild poikilocapnic hypoxia increases very low frequency haemoglobin oxygenation oscillations in prefrontal cortex
PublicationBackground: The aim of the study was to investigate the effect of mild cerebral hypoxia on haemoglobin oxygenation(HbO2), cerebrospinal fluid dynamics and cardiovascular physiology. To achieve this goal, four signals were recorded simultaneously: blood pressure, heart rate / electrocardiogram, HbO2 from right hemisphere and changes of subarachnoid space (SAS) width from left hemisphere. Signals were registered from 30 healthy,...
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Loop-mediated isothermal amplification (LAMP) as a diagnostic tool in detection of infectious diseases
PublicationLoop-mediated isothermal amplification (LAMP) is a gene amplification method which amplifies DNA with high specificity and efficiency under isothermal conditions. Because of its rapidity and simplicity, it is a valuable diagnostic tool in the early detection and identification of infectious diseases. LAMP method is based on the use of a set of four to six specially designed primers spanning six to eight distinct sequences on the...
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Environmental aspects of coastal earth structures made of soil-ash composites
PublicationThis paper presents an innovative technology of building the coastal dams with the use of soil-ash composites. A natural- scale test stand and results of the performed environmental tests are presented ; they have been compared with standards for purity of soils and waters. Also, an analysis of the obtained results and discussion of trends and anomalies in the observations, are given.
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Architektura systemów informatycznych w nowoczesnych przedsiębiorstwach telekomunikacyjnych
PublicationCelem artykułu było zapoznanie czytelnika z architekturą zorientowaną na usługi. Omówiono wady i zalety tego rozwiązania, a także rozwiązania alternatywne. Przedstawiono technologie i standardy w SOA oraz zaprezentowano dwa narzędzia wspierające rozwijanie i utrzymanie korporacyjnego systemu informatycznego.
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Stateczność samopodnoszących pełnomorskich platform wiertniczych w fazie eksploatacji
PublicationWspółczynnik bezpieczeństwa platformy Petrobaltic na moment obrotowy (stateczność ogólna) oszacowany przy założeniu, że konstrukcja jest traktowana jako układ słupów połączonych sztywnym pokładem, z korekcją efektów drugiego rzędu. Przemieszczenie poziome pokładu platformy wyznaczone, stosując odpowiedni model MES. Siła krytyczna nogi obliczona przy założeniu jej utwierdzenia w dnie morza. Wpływ odchyłki od idealnej geometrii rur...
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Metoda prognozowania mocy skrawania przy przecinaniu piłami polskiego drewna sosnowego z uwzględnieniem wiązkości materiału obrabianego
PublicationW pracy zostały przedstawione wartości właściwości materiałowych tj.: wiązkość R oraz naprężenia tnące w strefie skrawania τy, dla drewna sosnowego (Pinus sylvestris L.). Badane próbki drewna pochodziły z czterech Krain Przyrodniczo - Leśnych Polski: Bałtyckiej Krainy Przyrodniczo - Leśnej (kraina A), Karpackiej Krainy Przyrodniczo - Leśnej (kraina B), Małopolskiej Krainy Przyrodniczo - Leśnej (kraina C) oraz Wielkopolsko - Pomorskiej...
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Instytucjonalizacja etyki organizacji jako technologia zarządcza.
PublicationW artykule zaprezentowano i przeanalizowane zostały techniki i programy instytucjonalizacji etyki w organizacji. Sam proces instytucjonalizacji etyki wskazany został jako wazny aspekt zarządzania organizacjami.
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Zasilanie urządzeń sieci Ethernet przez kable transmisyjne
PublicationW roku 2003 komitet IEEE zatwierdził standard 802.3af (PoE) specyfikujący zasady zasilania urządzeń końcowych przez standardowe kable ethernetowe. W roku 2008 ma zostać zatwierdzona nowa wersja PoE, tzw. PoE Plus (IEEE 802.3at). W pracy omówiono zasady zasilania urządzeń proponowane w standardzie PoE, wskazano na ograniczenia wprowadzone przez IEEE 802.3af, przedstawiono podstawowe rozszerzenia proponowane w nowym rozwiązaniu PoE...
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Selected problems of experimental investigation of dynamically loaded journal bearings
PublicationIn the paper some problems concerning relations between external bearing loadings and critical lining stresses are described for test stand with rotating load vector. According to the standard ISO 7905/1 this type of test stand, for dynamically loaded slide bearing, is recommended as a basic research unit for material testing in a complete bearing unit. The lining stress calculation results occurred being dependent on applied calculation...
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GSM Cordless Telephony System - perspektywa rozwoju transmisji danych w systemie GSM.
PublicationW artykule opisano nowy standard systemu telefonii bezprzewodowej, znanego pod nazwą GSM -CTS (ang. GSM - Cordless Telephony System), w pełni zintegrowanego z systemem GSM. Przedstawiono podstawowe charakterystyki omawianego systemu, tzn. jego architekturę, zasadę działania, właściwości interfejsu radiowego oraz rodzaje oferowanych usług. W referacie zostały omówione perspektywy rozwoju systemu, ze szczególnym uwzględnieniem możliwości...
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Effect of mesh deformation on the accuracy of 3D FEM electromagnetic analysis
PublicationIn this paper, the accuracy of 3D FEM electromagnetic simulations in parametric analysis using mesh deformation techniques is discussed. Mesh deformation techniques allow one to preserve the mesh topology while the geometry is changed. It is shown that the application of mesh deformation can provide accurate simulation results even for very large deformations. On the other hand, it is also shown that the technique has to be used...
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A study on the protection of methionine and the reduction of methionine sulfoxide in methionine-containing analogues of the growth-modeling factor Gly-His-Lys
PublicationThe protection of methionine and the reduction of methionine sulfoxide in methionine-containing analogues of Gly-His-Lys are described. The peptides were synthesized by a solid-phase method using the standard Fmoc procedure. Simultaneous deprotection of the peptide side chain and liberation from the resin were achieved using an appropriate TFA cocktail. The TFA cocktail was selected to minimize oxidation of the methionine residue....
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CLASSIFICATION OF RESTRAINTS IN THE OPTIMIZATION PROBLEM OF A COLD-FORMED PROFILE
PublicationThis work describes the restraints in the optimization problem. This is an important and complicated issue because it requires taking into account a vast range of information related to the design and production. In order to describe the relations of a specific optimization problem, it is essential to adopt appropriate criteria and to collect information on all kinds of restraints, i.e. boundary conditions. The following paper...
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Intelligent turbogenerator controller based on artifical neural network
PublicationThe paper presents a desing of an intelligent controller based on neural network (ICNN). The ICNN ensures at the same time two fundamental functions : the maintaining of generator voltage at the desired value and the damping of the electromechanical oscillations. Its performance is evaluted on a single machine infinite bus power system through computer simulations. The dynamic and transient operation of the proposed controller...
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EXHAUST TEMPERATURE MEASUREMENTS OF THE MARINE TURBOCHARGED DIESEL ENGINES IN OPERATION
PublicationThe article presents the selected metrology issues concerning the exhaust temperature of the turbocharged marine engines during operation. The special concern has been paid on existing disturbances as well as thermodynamical interpretation of the recorded measurement signal. A diagnostic informativeness of the standard exhaust temperature’s measurements has worked out while the engine runs in steady states has been also considered...
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Electoral support for extreme right-wing parties: A sub-national analysis of western European elections
PublicationThis paper addresses two major limitations of cross-national research on electoral support for extreme right parties (ERPs) in western Europe: its almost exclusive focus on national-level data and its failure to examine the role of the social welfare state and social capital. We employ Tobit I estimations in an additive and interactive model and compute conditional coefficients and standard errors for several interactive variables....
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Podstawy definiowania procesów IT
PublicationNadmiar wdrożeń ISO9000, które na przełomie XX i XXI wieku były bardzo modne, spowodował u szefów polskich firm przesyt i alergię na słowo „ISO”. Tymczasem jest to skarbnica wiedzy zbieranej przez lata i uporządkowanej w numerowany standard. Znajdziemy tam gotowe odpowiedzi na większość nurtujących organizację pytań. Dla firm wytwarzających oprogramowanie lub świadczących usługi IT swego rodzaju biblią powinna być norma ISO/IEC...
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Wideband Model Order Reduction for Macromodels in Finite Element Method
PublicationAbstract: This paper presents a novel algorithm for accelerating 3D Finite Element Method simulations by introducing macromodels created in local model order reduction in the selected subdomains of the computational domain. It generates the projection basis for a compact system of equations associated with a separate subdomain. Due to non-linear frequency dependency in the Right Hand Side (RHS), the standard reduction methods do...
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Cavitation Erosion of P110 Steel in Different Drilling Muds
PublicationThe P110 steel specimens were subjected to ultrasonic cavitation erosion in different compositions of drilling muds and surfactant additive. The test procedure was based on ASTM-G-32 standard recommendations. API 5CT-P110 steel is used for pipes in oil and gas industry. The harsh environment and high velocity of flows poses corrosive and erosive threat on materials used there. The composition of drilling fluid influences its rheological...
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Note on the variance of the sum of gaussian functonals
PublicationDowodzi się oszacowania wariancji sum funkcjonałów losowych, konstruowanych dla zależnego ciągu gaussowskiego.Let (Xi; i = 1; 2; : : :) be a Gaussian sequence with Xi 2 N(0; 1) for each i and suppose its correlation matrix R = (ij)i;j1 is the matrix of some linear operator R : l2 ! l2. Then for fi 2 L 2(), i = 1; 2; : : : ; where is the standard normal distribution, we estimate the variation of the sum of the Gaussian functionals...
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Measurement Stand and Methodology for Research of the Off-Body and Body-to-Body Radio Channels in WBANs with Different Diversity Schemes
PublicationThe concept of an experimental test bed for system loss and channel impulse response measurements for off-body and body-to-body radio channels in wireless body area networks (WBANs) is fully described. The possible measurement scenarios that may occur in investigation of off-body and body-to-body channels are classified and described in detail. Additionally, an evaluation is provided of the standard and expanded uncertainties of...
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Intergranular Corrosion Detection Using Electromagnetic Transducers for Ultrasonic Testing
PublicationThe aim of this paper is to create a research methodology that allows a quick analysis of the structural state of high alloy austenitic steels using non-destructive ultrasonic tests, in contrast to destructive standard methods. Electromagnetic acoustic transducers (EMAT) are used to generate and receive the ultrasonic wave and detect the microstructural changes caused by sample sensitization in elevated temperature, even after...
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Relacje w edukacyjnym kształtowaniu teorii i praktyki inżynierskiej
PublicationRozważono wzajemne zależności i współdziałanie pomiędzy teorią i praktyką w kształtowaniu zawodowej działalności inżynierów - zakładając, że teoria jest równoznaczna z kreatywnym myśleniem. Aby móc wykształcić intelektualnie dojrzałych ludzi techniki, niezbędna jest edukacja respektująca wysokie standardy wykształcenia ogólnego.
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Inteligentny budynek - obecne technologie i kierunki rozwoju
PublicationW artykule przedstawiono aktualne technologie stosowane podczas realizacji systemów automatyki budynku i nowoczesnych instalacji elektrycznych w nowoczesnych budynkach. Omówiono podstawowe funkcje tych systemów oraz korzyści wynikające z ich stosowania. Przedstawiono najpopularniejsze standardy oraz zaprezentowano przewidywane kierunki rozwoju.
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Rola fragmentów wyodrębnionych w języku UML 2
PublicationPrzedmiotem rozważań zaprezentowanych w niniejszej publikacji są zmiany oraz udoskonalenia związane z superstrukturą języka UML, wprowadzone wraz z wersją 2.0 tego standardu. W odróżnieniu od modyfikacji poczynionych w ramach poprzednich rewizji języka, zakres udoskonaleń związanych z przejściem pomiędzy wersjami 1.5 oraz 2.0 określić należy jako znaczny. W niniejszym referacie skoncentrowano się na jednej, ale bardzo znaczącej...