Wyszukiwarka
Filtry
wszystkich: 6200
-
Katalog
- Publikacje 4924 wyników po odfiltrowaniu
- Czasopisma 16 wyników po odfiltrowaniu
- Konferencje 11 wyników po odfiltrowaniu
- Wydawnictwa 1 wyników po odfiltrowaniu
- Osoby 101 wyników po odfiltrowaniu
- Projekty 2 wyników po odfiltrowaniu
- Kursy Online 70 wyników po odfiltrowaniu
- Wydarzenia 11 wyników po odfiltrowaniu
- Dane Badawcze 1064 wyników po odfiltrowaniu
wyświetlamy 1000 najlepszych wyników Pomoc
Wyniki wyszukiwania dla: Nb doping
-
The Proposition of an Automated Honing Cell with Advanced Monitoring
PublikacjaHoning of holes allows for small shape deviation and a low value of a roughness profile parameter, e.g., Ra parameter. The honing process heats the workpiece and raises its temperature. The increase in temperature causes thermal deformations of the honed holes. The article proposes the construction of a honing cell, containing in addition to CNC honing machine: thermographic camera, sound intensity meter, and software for collecting...
-
Methods of determining cutting forces during woodcutting
PublikacjaW artykule przedstawiono podstawowe metody określania sił przy przecinaniu drewna, które ulegały modyfikacjom wraz z postępem wynikającym z badań nad tym procesem. Przedstawione metody podzielono na dwie grupy: podejście klasyczne oraz nowatorskie podejście z zastosowaniem mechaniki pękania, które uwzględniają różne własności mające wpływ na proces przecinania. Podejście klasyczne reprezentują metody opierające się na właściwym...
-
Adopting Collaborative Games into Agile Software Development
PublikacjaAlthough the emergence of agile methods has triggered a growing awareness that social factors have a crucial impact on the success of software projects, neither the Scrum Guide nor the Agile Manifesto prescribe techniques that aid the human side of software development. To address this challenge, we enriched the Scrum process with a set of collaborative games. Collaborative games refer to techniques inspired by game play, but designed...
-
Prediction of coking dynamics for wet coal charge
PublikacjaA 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...
-
Adopting Collaborative Games into Agile Requirements Engineering
PublikacjaIn agile software development, where great emphasis is put on effective informal communication involving diverse stakeholders, success depends on human and social factors. Not surprisingly, the Agile Manifesto advocates principles and values such as “individuals and interactions over processes and tools”, “focus on the customer”, “collaborate regularly”, “communicate face-to-face within the team” and “have regular team introspection”....
-
Generation and Propagation of Nonlinear Waves in a Towing Tank
PublikacjaThe paper presents the results of the research focused on linear and nonlinear wave generation and propagation in a deepwater towing tank equipped with a single flap-type wavemaker of variable draft. The problem of wave generation and propagation has been theoretically formulated and solved by applying an analytical method; linear and nonlinear solutions were obtained. The linear solution has been verified experimentally. The...
-
The propagation of the waves in the CTO S.A. towing tank
PublikacjaThe paper presents the results of research focused on the wave propagation in the CTO S.A. deepwater towing tank. In the scope of paper, the wavemaker transfer function was determined for regular waves, based on the Biésel Transfer Function and further for irregular waves, based on Hasselman model of nonlinear energy transfer. The phenomena: wave damping, wave breakdown and wave reflection, were measured, analyzed and mathematically...
-
Information transfer during the universal gravitational decoherence
PublikacjaRecently Pikovski et al. (Nat Phys 11:668, 2015) have proposed in an intriguing universal decoherence mechanism, suggesting that gravitation may play a conceptually important role in the quantum-to-classical transition, albeit vanishingly small in everyday situations. Here we analyze information transfer induced by this mechanism. We show that generically on short time-scales, gravitational decoherence leads to a redundant information...
-
Redundant information encoding in QED during decoherence
PublikacjaBroadly understood decoherence processes in quantum electrodynamics, induced by neglecting either the radiation [L. Landau, Z. Phys. 45, 430 (1927)] or the charged matter [N. Bohr and L. Rosenfeld, K. Danske Vidensk. Selsk, Math.-Fys. Medd. XII, 8 (1933)], have been studied from the dawn of the theory. However, what happens in between, when a part of the radiation may be observed, as is the case in many real-life situations, has...
-
Implementation of DIFAR Processing in ASW Dipping Sonar
PublikacjaThis paper presents the implementation of the signal processing algorithm used by buoy DIFAR (Directional Frequency Analysis and Recording), that is fully operational on Polish Navy anti-submarine warfare (ASW) helicopters and ships, applied to dipping sonars for detection and tracking of submarines. The development of the DSP algorithms was a part of the modernization of sonars conducted at the Gdansk University of Technology....
-
Modelling, Simulation and Optimization of the Wavemaker in a Towing Tank
PublikacjaThe paper analyses the problem of experimental identification (frequency response), modelling and optimization of the towing tank wavemaker in the Scilab/Xcos environment. The experimental identification of the objects (the towing tank wavemaker placed in the hydrodynamic laboratory of the CTO S.A. Ship Design and Research Centre (CTO)) and the implementation of the models in the simulation environment, enable to perform: 1. tuning...
-
Polaron hopping conduction in manganese borosilicate glass
PublikacjaA study on a novel material - manganese borosilicate glass without alkali metals, was reported. It was found that the obtained samples containing high amount of manganese oxide (60MnO–xSiO2–(40 − x)B2O3, x = 5, 10, 15, 20 and 30 mol%) were amorphous and homogeneous. XPS measurements showed that most of manganese ions are at oxidation level of Mn2 + ions and the mean oxidation level slightly moves toward higher value, with increasing...
-
Digital Control System of the Wavemaker in the Towing Tank
PublikacjaThe paper describes a digital control system of the rigid flap wavemaker in a towing tank in CTO S.A. Ship Design and Research Centre. The control system is based on an 8-bit AVR microcontroller and consists of two cascading PID controllers. The digital system replaced the previous analogue system from 1974 and has been integrated with the existing sensors and actuators of the wavemaker. The new control system allows to obtain...
-
Investigations of resonance effects during silo flow.
PublikacjaOmówiono problem efektów rezonansowych podczas przepływu materiału sypkiego w silosie. Wykonano badania doświadczalne w dużych i małych silosach. Obliczenia MES wykonano dla płaskiego stanu odkształcenia. Zachowanie materiału sypkiego było modelowane mikropolarnym sprężysto-plastycznym prawem wg Mh hausa. W obliczeniach uwzględniono wpływ ścian. Wyniki numeryczne porównano z doświadczeniami w dużych i małych silosach.
-
Synergistic effect of nickel formate on the thermal and flame-retardant properties of polypropylene
Publikacja -
Ischemia during rest intervals between sets prevents decreases in fatigue during the explosive squat exercise: a randomized, crossover study
Publikacja -
Simultaneous determination of ibuprofen and its metabolites in complex equine urine matrices by GC-EI-MS in excretion study in view of doping control
PublikacjaA novel assay for the simultaneous determination of ibuprofen (IBU) and its four probable metabolites, 1-hydroxyibuprofen (1-OH IBU), 2-hydroxyibuprofen (2-OH IBU), 3-hydroxyibuprofen (3-OH IBU) and carboxyibuprofen (CBX IBU) in equine urine samples with the application of Gas Chromatography-Electron Ionization-Mass Spectrometry (GC-EI-MS) has been developed and elaborated. The new approach for sample preparation including minimizing...
-
Estimation of transmission quality in cellular systems based on indicators measured by the radio module
PublikacjaThe article presents a measurement stand for testing transmission quality in cellular systems such as LTE, NB-IoT, UMTS and GSM. The results of BLER and throughput measurements for various propagation conditions as well as results of quality indicators appropriate for mentioned technologies measured by commercial radio module are presented. Those measurements were utilized to analyze the possibility of estimating the transmission...
-
spotkanie informacyjne na temat programów FIRST TEAM, HOMING, POWROTY
WydarzeniaFundacja na rzecz Nauki Polskiej zaprasza młodych doktorów z Polski i z zagranicy zainteresowanych złożeniem wniosków do programów FIRST TEAM, HOMING oraz POWROTY na transmisję ze spotkania informacyjnego, które odbędzie się 15 września w Warszawie. Transmisję będzie można śledzić na portalu YouTube. W trakcie spotkania internauci będą mogli zadawać...
-
Curve Curvature Analysis of a Grain Trajectories in Variable Honing of Cylindrical Holes of Thin Wall Cylinder Liners as a Honing Process Optimization Strategy
PublikacjaThe main problem of honing of thin wall cylinder liners is a thermal distortion of honed holes. The higher the value of the temperature of the honed workpiece, the greater its holes deformation. The paper presents a method of reducing the temperature occurring in the honing process as a result of the application of a variable honing kinematics conditions with particular emphasis on the analysis of the effect of the value of the...
-
Właściwości strukturalne i transportowe kompozytów tytanianu strontu z tlenkami przewodzącymi jonowo
PublikacjaW ramach pracy doktorskiej wytworzono i zbadano właściwości kompozytów tytanianu strontu domieszkowanego niobem (Sr(Ti,Nb)O3) z wybranymi tlenkami przewodzącymi jonowo (tlenek cyrkonu stabilizowany tlenkiem itru – YSZ, tlenek ceru - CeO2). Analizę dla różnych składów kompozytów prowadzono w szerokim zakresie temperatur i ciśnień parcjalnych tlenu. Właściwości strukturalne kompozytów zbadano metodami XRD, SEM, AFM i EDX, zaś właściwości...
-
A theoretical framework for understanding trust and distrust in internet voting
PublikacjaEach and every case of success and failure in the implementation of internet voting is permeated by a common element: the concept of trust. Several researchers highlighted the relevance of creating trust for the successful implementation of technology [15] and, in particular, of internet voting [13]. But the concept itself is complex and challenging to define, for one fundamental reason: it is a concept of everyday social use...
-
Motion stability during optimal control of the mobile platform
PublikacjaPraca przedstawia metodę badania stabilności robotów mobilnych podczas sterowania optymalnego na przykładzie 3-kołowej platformy mobilnej. Robot posiada więzy nieholonomiczne. Model matematyczny 3-kołowej platformy mobilnej opisuje skończona liczba nieliniowych równań różniczkowych. Stąd, prognozowanie stabilności ruchu takiego obiektu wymaga zastosowania efektywnych algorytmów.
-
Heart laceration during oesophagectomy for the treatment of oesophageal carcinoma
Publikacja -
Manure heaps attract farmland birds during winter
Publikacja -
The management of hematologic malignancies during the COVID-19 pandemic
Publikacja -
Comparison of Macintosh and Miller laryngoscopes during pediatric resuscitation
Publikacja -
NOx Emissions from Regenerator of Calcium Looping Process
Publikacja -
Identification of Non-stationary and Non-linear Drying Processes
Publikacja -
An efficient molecular docking using conformational space annealing
Publikacja -
Thermal Sensations of Surgeons During Work in Surgical Gowns
Publikacja -
Patients’ Expectations as to Doctors’ Behaviors During Appointed Visits
Publikacja -
Adaptive resolution-constrained scalar multiple-description coding
Publikacja -
Computer simulation of induction hardening of moving flat charge
Publikacja -
Volunteering in palliative care during COVID-19 pandemic
Publikacja -
Odour Samples Degradation During Detention in Tedlar® Bags
Publikacja -
Algorithms for passive detection of moving vessels in marine environment
Publikacja -
Conformational changes of peptidoglycan fragments during their interactions with vancomycin
Publikacja -
Kinetics and mechanism of the chemically modified starches during gelatinization.
PublikacjaNative starch was silicated by means of microwave-assisted reactions with varying doses of reagents. Resulting products were characterized by DSC and HMR-relaxation methods. It was observed that the hydratation of the silicated starches during gelatinization decreases when compared to that of the native potato starch. The amount of unfrozen water for ungelitinizated silicated starches are less than in control samples. At the same...
-
Application of Majority Voting Protocols to Supporting Trading Decisions
PublikacjaA broad spectrum of analysis and prediction indicators and methods exists to support trading decisions, but no hard knowledge exist to tell in advance which of them will fit best in a given timeframe. To support trading decisions, a multi-agent self-organizing system has been proposed. The system is based on history based dynamic weight voting and selects the right indicators based on their past performance. The formal analysis...
-
APPLICATION OF MAJORITY VOTING PROTOCOLS TO SUPPORTING TRADING DECISIONS
PublikacjaA broad spectrum of analysis and prediction indicators and methods exists to support trading decisions, but no hard knowledge exist to tell in advance which of them will fit best in a given timeframe. To support trading decisions, a multi-agent self-organizing system has been proposed. The system is based on history based dynamic weight voting and selects the right indicators based on their past performance. The formal analysis...
-
Carbon dioxide sequestration during shale gas recovery
PublikacjaThis paper presents literature on theoretical and practical aspects of gas production from shale using carbon dioxide fracturing. Development of technical and environmental aspects of carbon dioxide fracturing technologies is also considered. Patents applicable to carbon dioxide fracturing are reviewed. There were also conducted researches to evaluate possibility of carbon dioxide sequestration in shale gas reservoirs.
-
Evolution of Animats Following a Moving Target in an Artificial Ecosystem
PublikacjaMany biological animals, even microscopically small, are able to track moving sources of food. In this paper, we investigate the emergence of such behavior in artificial animals (animats) in a 2-dimensional simulated liquid environment. These "predators" are controlled by evolving artificial gene regulatory networks encoded in linear genomes. The fate of the predators is determined only by their ability to gather food and reproduce—no...
-
Active Damping of Impulse-Excited Flexible Plate Vibration
PublikacjaArtykuł prezentuje metodę aktywnego tłumienia drgań podatnej płytki wzbudzanych impulsowo. Układ sterowania składa się z aktywych wzbudników piezoelektrycznych przymocowanych do przedmiotu. Efektywnośc metody została potwierdzona badaniami eksperymentalnymi.
-
Functionalization of Parylene During Its Chemical Vapor Deposition
PublikacjaTwo possible mechanisms for the reaction of four halogenated (metha)acrylate-based molecules with Parylene [poly (paraxylylene)] during its chemical vapor deposition were proposed. The chemical reactivity of acrylate double bond with the paraxylylene biradical was calculated for all four (metha)acrylate-based molecules. These calculations allowed the evaluation of the energetically favorable mechanism and indeed a direct correlation...
-
Non-linear model of high damping rubber bearing.
PublikacjaCelem artykułu jest analiza modelu łożyska wykonanego z wysokotłumiącej gumy, które wykorzystywane są do posadowienia konstrukcji budowlanych na terenach sejsmicznych. Model umożliwia numeryczną symulację pracy urządzenia pod zadanym obciążeniem i w danych warunkach termiczno-wilgotnościowych. Wyniki analizy pokazują, iż proponowany model umożliwia symulację zachowania się łożyska w szerokim zakresie odkształceń.
-
Moving objects in the problem of path planning by evolutionary computation
Publikacja...
-
Flow-induced stress corrosion failure of SS piping
PublikacjaPrzedstawiono uszkodzenie eksploatacyjne rurociągu ze stali austenitucznej typu 18Cr-10Ni-Ti w instalacji przepracowanych olejów napędowych w rafinerii ropy naftowej. Wyjaśniono mechanizm niszczenia środowiskowego stali w wyniku mechanicznego i elektrochemicznego działania strumieni procesowych.
-
Propagation of elestic waves in beams including damping effects.
PublikacjaW pracy przedstawiono wyniki analizy propagacji fali sprężystej w belce z tłumieniem wiskotycznym.
-
Entrance and exit conditions of teeth during circular sawing.
PublikacjaW pracy przedstawiono analizę rozkładu czasowego i przestrzennego geometrycznych warunków wejścia i wyjścia ostrzy piły przy przecinaniu piłami tarczowymi.