Filters
total: 1582
displaying 1000 best results Help
Search results for: INDIRECT TENSILE TESTING
-
Low Ambient Temperature Cold Start Emissions of Gaseous and Solid Pollutants from Euro 5 Vehicles featuring Direct and Indirect Injection Spark-Ignition Engines
Publication -
Estimation of the environmental risk posed by landfills using chemical, microbiological and ecotoxicological testing of leachates
Publication -
Harder Won and Easier Lost? Testing the Double Standard in Gender Rules in 62 Countries
Publication -
Testing of PTA automatic braze-welding technology for producing absorber joints of solar collectors
Publication -
1/f noise as a diagnostic tool for non-destructive testing of silicon solar cells
PublicationPrzeprowadzono badania eksperymentalne charakterystyk statycznych i szumowych krzemowych ogniw słonecznych. Wyniki wykazują możliwość wykorzystania szumu 1/f jako narzędzia diagnostycznego w testach nieniszczacych tych przyrzadów.
-
Comparative analysis of positioning accuracy of Garmin Forerunner wearable GNSS receivers in dynamic testing
Publication -
Performance and Security Testing of Distributed Applications Working in Public/Private IPSec and HTTPS Environments
PublicationW pracy przedstawiono zagadnienie testowania wydajności (ang. Performance) i bezpieczeństwa (ang. Security) aplikacji rozproszonych działających w sieciach publiczno-prywatnych stworzonych przy wykorzystaniu technologii IPSec i HTTPS. Dwa podejścia do architektury oprogramowania tych aplikacji zostały omówione: Request/Response oraz Publish/Subscribe. Analiza zawiera przedstawienie wpływu technologii IPSec i HTTPS na całkowitą...
-
Multispectral impedance quality testing of coil-coating system using principal component analysis
PublicationThe task of quality checking of the coil-coated system was undertaken using impedance spectroscopy. In order to properly characterize the system the new impedance spectrum was calculated as an averaged result of 12 experimental spectra obtained from 12 different places of the sample at the same time of immersion in 3% of NaCl. The experimental spectra were recorded for a 24-h period at 1 h intervals between starting points of each...
-
Reliability Testing of Wind Farm Devices Based on the Mean Time between Failures (MTBF)
Publication -
Portable parallel simulator using MPI for 2D and 3D domains: design and performance testing
PublicationW artykule prezentujemy szczegóły projektowo-implementacyjne naszego modularnego kodu symulacyjnego z wykorzystaniem MPI, w tym nakładaniem obliczeń i komunikacji. Podkreślamy modularność naszej implementacji pozwalającą na łatwą adaptację kodu dla innych zasotosowań. Prezentujemy związek pomiędzy przyspieszeniem obliczeń, rozmiarem i kształtami trójwymiarowych domen z różnymi stosunkami liczby węzłów aktualizowanych przez procesor...
-
A Regular Expression Matching Application with Configurable Data Intensity for Testing Heterogeneous HPC Systems
PublicationModern High Performance Computing (HPC) systems are becoming increasingly heterogeneous in terms of utilized hardware, as well as software solutions. The problems, that we wish to efficiently solve using those systems have different complexity, not only considering magnitude, but also the type of complexity: computation, data or communication intensity. Developing new mechanisms for dealing with those complexities or choosing an...
-
Testing and sampling devices for monitoring volatile and semi-volatile organic compounds in indoor air
PublicationAdults spend most of their time in enclosed spaces (e.g., apartment, office and public buildings). According to research conducted by scientists, air quality indoors is much worse than the ambient air quality outdoors. Hazardous chemicals found in air indoors can adversely affect the functioning of the human body and cause many respiratory and circulatory diseases. Harmful chemical compounds (mainly volatile organic compounds and...
-
Testing Stability of Digital Filters Using Multimodal Particle Swarm Optimization with Phase Analysis
PublicationIn this paper, a novel meta-heuristic method for evaluation of digital filter stability is presented. The proposed method is very general because it allows one to evaluate stability of systems whose characteristic equations are not based on polynomials. The method combines an efficient evolutionary algorithm represented by the particle swarm optimization and the phase analysis of a complex function in the characteristic equation....
-
Testing of Software for the Planning of a Linear Object GNSS Measurement Campaign under Simulated Conditions
PublicationThe precision of a linear object measurement using satellite techniques is determined by the number and the relative position of the visible satellites by the receiver. The status of the visible constellation is described by DOP. The obtained geometric coefficient values are dependent on many variables. When determining these values, field obstacles at the receiver location and satellite positions changing with time must be taken...
-
Testing GNSS receiver accuracy in Samsung Galaxy series mobile phones at a sports stadium
Publication -
Analysis of electrochemical parameters in time domain during the passive layer cracking occurring on the 304L stainless steel in chlorides solution under tensile stresses
Publication -
Analysis of electrochemical parameters in time domain during the passive layer cracking occurring on the 304L stainless steel in chlorides solution under tensile stresses.
PublicationDynamiczna Elektrochemiczna Spektroskopia Impedancyjna została wykorzystana do szczegółowej analizy zakresu przejścia stan pasywny - stan aktywny podczas procesu pękania warstwy pasywnej. Wpływ potencjału oraz naprężeń mechanicznych na niszczenie warstwy ochronnej występującej na stali 304L w środowisku 0.5M NaCl w pokojowej temperaturze został przestudiowany. Praca prezentuje chwilowe widma impedancyjne uzyskane przy różnych warunkach...
-
Synthesis and Testing of BCZY/LNZ Mixed Proton–electron Conducting Composites for Fuel Cell Applications
PublicationA composite of BaCe0.6Zr0.2Y0.2O3–δ and Li2O:NiO:ZnO was investigated for fuel cell applications. The composite was successfully synthesized and its phase stability was confirmed at temperatures up to 900 °C. The influence of sintering and pressing aids on density was also investigated. Electrical properties were measured. DC electrical conductivity was about 8•10-4 S/m at 845 K. Open circuit voltage measurements in wet hydrogen...
-
Non-destructive testing of industrial structures with the use of multi-camera Digital Image Correlation method
Publication -
A method for testing the wide-sense stationary uncorrelated scattering assumption fulfillment for an underwater acoustic channel
PublicationWide-sense stationary and uncorrelated scattering (WSSUS) assumptions are often applied for the statistical description of wireless communication channels. However, in the case of underwater acoustic channels the WSSUS model is of limited value. The degree of similarity of in-phase and quadrature components of the channel impulse response, measured with the use of bandpass modulated signals, can be used as an indicator of WSSUS...
-
Characterisation and OSL dating of modern fluvial sediments in the lower Vistula River: testing the zeroing assumption
Publication -
Testing for NRAS Mutations in Serous Borderline Ovarian Tumors and Low-Grade Serous Ovarian Carcinomas
Publication -
Adaptive resolution simulation of liquid para-hydrogen: testing the robustness of the quantum-classical adaptive coupling
Publication -
Micro-Abrasive Wear Testing of Surface Engineered Surgical Grade CoCrMo Alloy for Biotribological Applications
Publication -
Selected Aspects of Testing the Positioning Accuracy of GNSS Receivers Used in Sports and Recreation by Dynamic Measurements
Publication -
Carboxymethylated starch and cellulose derivatives-based film as human skin equivalent for adhesive properties testing
Publication -
Compression and Fatigue Testing of High-Strength Thin Metal Sheets by Using an Anti-Buckling Device
Publication -
Testing heart rate asymmetry in long, nonstationary 24 hour RR-interval time series
Publication -
COMPARISON OF THE CONVENTIONAL AND ALTERNATIVE GRANULAR MATERIALS FOR DUAL-MEDIA FILTRATION OF GROUNDWATER: PILOT PLANT TESTING
PublicationNowadays, occurrence of abnormal mineral or organic natural (geogenic) compounds concentrations, in ground and infiltration water, but also quite often in surface waters, is now a common problem encountered in Poland, Europe and many other countries throughout the world. The most concern is usually paid on the removal of iron (Fe) and manganese (Mn) as well as anthropogenic compounds (in particular referring to the organic compounds...
-
A new modelling arrangement for testing of Catenary Anchoring Leg Mooring (CALM) system behaviour in waves
PublicationW artykule przedstawiono układ modelowy pławy cumowniczo-przeładunkoweji łańcuchów kotwicznych możliwy do realizacji w wydłużonych basenach falowych służących na co dzień do badania właściwości morskich statków. System łańcuchów kotwicznych sprowadzono do płaszczyzn równoległych do osi basenu i połączono z pławą cienkimi linkami stalowymi przechodzącymi przez bloczki kierunkujące. Opisywany układ pozwolił na przeprowadzenie badań...
-
Fracture Surface Topography Parameters for S235JR Steel Adhesive Joints After Fatigue Shear Testing
PublicationThis paper presents the experimental results of a study investigating the effect of holes and notches made on the overlap ends on the strength of adhesive joints. Single-lap joints made of S235JR steel sheets bonded with Araldite 2024-2 epoxy adhesive were tested. For comparative reasons, static shear strength tests and high-cycle fatigue strength tests were performed. Adhesive-filled joints having three holes, each with a diameter...
-
On the Use of Automatic Cuts Algorithm for T0 – T – Φ Formulation in Nondestructive Testing by Eddy Current
Publication -
Deep eutectic solvents microbial toxicity: Current state of art and critical evaluation of testing methods
PublicationDeep eutectic solvents (DESs) were described at the beginning of 21st century and they consist of a mixture of two or more solid components, which gives rise to a lower melting point compared to the starting materials. Over the years, DESs have proved to be a promising alternative to traditional organic solvents and ionic liquids (ILs) due to their low volatility, low inflammability, easy preparation, and usually low cost of compounds...
-
A Set of Low-power Microcontroller-based Modules Used for Testing of Small Energy Measurement Methods
PublicationEstimation of energy consumption of low-power devices is not widely discussed in the scientific literature, but this topic is getting more and more popular. Evaluation process of newly developed methods and instrumentation requires carefull treatment. In order to fulfill this niche, the set of micro-power microcontroller based devices was proposed. The devices represent typical energy consuption profiles and allow experimental verification...
-
Bogdan Wiszniewski prof. dr hab. inż.
PeopleBogdan Wiszniewski graduated from Gdansk University of Technology in 1977 and was awarded an MSc in computer science and engineering with honours. In 1984 and 1998, respectively, has got his PhD and DSc. In 2006 was awarded a Professor title by the President of Poland. Lectured at the universities in Canada, US and UK. Principal investigator or coordinator in many national and international R&D projects with the significant...
-
Diagnostic testing of marine propulsion systems with internal combustion engines by means of vibration measurement and results analysis
PublicationIn this paper selected issues concerning vibration diagnosis of the mechanical system within marine propulsion units have been presented, carried out on the basis of experimental examinations of a real object in which an exceedance of the allowable vibration’s level had been observed. Used diagnosing system has been characterised. A procedure of longitudinal and transverse vibrations shaft lines of the mechanical system within...
-
Testing Students’ Entrepreneurial Self-Efficacy as an Early Predictor of Entrepreneurial Activities. Evidence From the SEAS Project
PublicationOver the last forty years, since Bandura (1977) introduced the concept of self-efficacy, there have been a constantly growing number of research publications using this concept. Its early development resulted in the creation of a new construct of entrepreneurial self-efficacy (ESE) proposed for the first time by (Chen et al. 1998). Since then, many different groups of research concerning ESE have emerged - one of them is the study...
-
Why do patients decline amniocentesis? Analysis of factors influencing the decision to refuse invasive prenatal testing
Publication -
A Novel Method for High Temperature Fatigue Testing of Nickel Superalloy Turbine Blades with Additional NDT Diagnostics
Publication -
Design of the setup for testing optical telemetry ranging including turbulence simulator for the Earth-to-satellite communication link
Publication -
Mechanical response of 6061-T6 aluminium alloy subjected to dynamic testing at low temperature: Experiment and modelling
Publication -
Self-testing of analog parts of mixed-signal electronic microsystems based on multiple sampling of time responses
PublicationW artykule przedstawiono nowe podejście samo-testowania toru analogowego zakończonego przetwornikiem A/C w mieszanych sygnałowo elektronicznych systemach wbudowanych sterowanych mikrokontrolerami. Bazuje ono na nowej metodzie diagnostycznej opartej na przekształceniu transformującym zbiór próbek odpowiedzi czasowej układu badanego na pobudzenie impulsem prostokątnym na rodzinę krzywych identyfikacyjnych umieszczonych w przestrzeni...
-
Recent developments in biological sample testing methods for the confirmation of gestational exposure to tobacco smoke anddrugs of abused
PublicationSubstance use is most prevalent in reproductive-aged people also by women during pregnancy. In national prevalence surveys among women aged 15 to 44 years, 10.8 % of women reported using alcohol during pregnancy, 17 % reported smoking during pregnancy, and 4.4 % reported abusing any illicit substances during pregnancy. Virtually all illegal drugs, such as heroin and cocaine, pose dangers to a pregnant woman. Legal substances, such...
-
Wave Method for Structural Health Monitoring: Testing Using Full-Scale Shake Table Experiment Data
PublicationAn algorithm of the wave method for structural health monitoring (SHM) is tested and calibrated using shake table experiment data of a full-scale, seven-story, reinforced-concrete building slice. The method is based on monitoring changes in the velocity of waves propagating vertically through the structure, identified by least-squares (LSQ) fit of beam models. The experiment was conducted by a team from the University of California,...
-
Materials and Testing of Welded Structures, PG_00062999, Zarządzanie i inżynieria produkcji, W, sem. 3, II stopień, lato 2023/2024
e-Learning Courses -
Piotr Jaskuła dr hab. inż.
PeopleI am a Faculty member (Associate Professor, Highway and Transportation Research Department) at the Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Poland).My main research interests include: pavement structures, interlayer bonding, pavement materials, recycling of road pavements, asphalt mixtures, bitumens, construction and maintenance of pavement structures.My lectures at the University include:...
-
Model-Driven Testing of Real-Time Embedded Systems - From Object Oriented towards Function Oriented Development
PublicationMBD
-
Measurements and calculation of self inductance of testing coils used in physical transformer model construction and its frequency analysis
Publication -
Label-free testing strategy to evaluate packed red blood cell quality before transfusion to leukemia patients
Publication -
Raman scattering measurements in monitoring of polymer synthesis process. Lightmetry 2002 : Metrology and Testing Techniques Using Light.
PublicationW artykule omówiono możliwości wykorzystania pomiarów ramanowskich do monitorowania w czasie rzeczywistym przebiegu procesów syntezy materiałów polimerowych. Wykorzystano sondy światłowodowe do sprzęgnięcia aparatury pomiarowej z typowym stanowiskiem technologicznym. Pomiary miały charakter zdalny, nieniszczący i niezakłócający przebieg reakcji.