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Search results for: NIELINIOWE PROCESY
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Fuzzy logic gain scheduling for non - linear servo tracking
PublicationArtykuł zawiera propozycję strojenia jako metodę sterowania serwomechanizmem z silnie nieliniowymi elementami. Serwomechanizm steruje dwoma elementami układu śledzącego zamontowanymi na okręcie znajdującym się w morzu. W układzie występuje tarcie spoczynkowe przy zerowej prędkości oraz nieliniowe tarcie przeciwdziałające ruchowi w każdej z osi układu śledzącego. Zastosowany został podwójny układ sterowania ze sprzężeniem zwrotnym....
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Analysis of non-linear elastic material properties of PVC-coated Panama fabric.
PublicationW pracy omówiono proces identyfikacji parametrów materiałowych dla wybranej tkaniny technicznej typu Panama. Zaproponowano metodę identyfikacji nieliniowo sprężystych właściwości tkaniny Panama. Określono zakres stosowalności nieliniowo sprężystych parametrów, w oparciu o doraźną wytrzymałości tkaniny na rozciąganie (UTS), która poddana redukcji określa tzw. wytrzymałość długoterminową (LTS). Opisano doświadczenia niezbędne do...
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Phosphate and Nitrate Removal from Coffee Processing Wastewater Using a Photoelectrochemical Oxidation Process
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Bacterial cellulose as a support for yeast immobilization – Correlation between carrier properties and process efficiency
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Safety Qualification Process for an Autonomous Ship Prototype – a Goal-based Safety Case Approach
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Comparative studies of Rhodamine B decolorization in the combined process Na2S2O8/visible light/ultrasound
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Formability and microstructure evolution mechanisms of Ti6Al4V alloy during a novel hot stamping process
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Optoelektroniczne narzędzia do badania in-situ przebiegu procesu syntezy cienkich warstw diamentopodobnych
PublicationW pracy przedstawiono optoelektroniczny system do diagnostyki in-situ plazmowych procesów CVD, wykorzystywanych do wytwarzania cienkich warstw diamentopodobnych. W systemie zastosowano przestrzenną optyczną spektroskopię emisyjną SR-OES i spektroskopię ramanowską. Pozwala to na jednoczesne badanie rozkładu cząstek w plaźmie i parametrów rosnącej warstwy. Opisano konstrukcję systemów pomiarowych, sprzęgniętych z komorą CVD za pomocą...
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Optoelektroniczne narzędzia do badania in-situ przebiegu procesu syntezy cienkich warstw diamentopodobnych
PublicationPrzedstawiono optoelektroniczny system do diagnostyki in-situ plazmowych procesów CVD, wykorzystywanych do wytwarzania cienkich warstw diamentopodobnych. W systemie zastosowano przestrzenną optyczną spektroskopię emisyjną SR-OES i spektroskopię ramanowską. Pozwala to na jednoczesne badanie rozkładu cząstek w plaźmie i parametrów rosnącej warstwy. Opisano konstrukcję systemów pomiarowych, sprzęgniętych z komorą CVD za pomocą dedykowanych...
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Migotanie przedsionków - kaskada zapalno-genetyczna. Rola procesu zapalnego w migotaniu przedsionków
PublicationRola procesu zapalnego, wskaźniki zapalne, czynniki predysponujące wystąpienie migotania przedsionków po zabiegu operacyjnym, czynniki wyzwalające napad pooperacyjnego migotania przedsionków, działanie interleukiny.
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The Evaluation of Quality of the Co-Firing Process of Glycerine Fraction with Coal in the High Power Boiler
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Tool Life and Process Dynamics in High Speed Ball End Milling of Hardened Steel
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On the formation process of silicon carbide nanophases via hydrogenated thermally induced templated synthesis
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Advances in Hard–to–Cut Materials: Manufacturing, Properties, Process Mechanics and Evaluation of Surface Integrity
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O poprawianiu dokładności periodogramu - estymaty widma gęstości mocy stacjonarnego procesu stochastycznego
PublicationW pracy pokazano, jak dzięki odpowiedniemu wyborowi długości odcinka realizacji (obserwacji) dyskretnego stacjonarnego procesu stochastycznego można istotnie poprawić dokładność estymacji parametrów sinusoid w nim zawartych. Wybór ten oparto o nowy, tu zdefiniowany parametr nazwany indeksem widmowej koncentracji energii periodogramu. Rozważania zilustrowano wynikami eksperymentu numerycznego.
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Qualitative changes in CEECs trade specialization (1995-2005) - the implications for economic growth process
PublicationCelem opracowania jest przedstawienie zmian jakościowych w strukturze eksportu w krajach Europy Środkowo-Wschodniej w latach 1995-2005. Jako miernik jakościowy eksportu wykorzystano indeks Hausmann et al (2007). Wyniki badań wskazują, różnice w relatywnych poziomach PKB per capita względem krajów UE-15 są znacznie większe niz różnice w jakościowej strukturze eksportu pomiędzy Nowymi Krajami Członkowskimi a krajami ''Pięnastki''....
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Wykorzystanie flotoekstrakcji do oczyszczania zaolejonych ścieków pochodzących z procesu remediacji gruntów
PublicationProces flotoekstrakcji, będący połączeniem ekstrakcji rozpuszczalnikowej i aeracji, zastosowano do usuwania zanieczyszczeń organicznych (dodekanu i heksadekanu) z fazy wodnej do różnych faz organicznych (1-dekanol, 1-oktanol, olej mineralny). Procesy prowadzono w obecności surfaktantów niejonowych (Rokanol NL6 i Triton BG10) oraz anionowych (dodecylosiarczan sodu). Ze wzrostem stężenia surfaktantów obserwowano spadek efektywności...
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Ocena warunków procesu precypitacji węglanu wapnia w reaktorze gaz(CO2)-lift
PublicationOtrzymywano węglan wapnia w reakcji wodorotlenku wapnia z dwutlenkiem węgla. Zbadano wpływ stężenia Ca(OH)2 oraz prędkości przepływu dwutlenku węgla na czas reakcji i wykorzystanie CO2. Określono strukturę otrzymanych cząstek CaCO3 za pomocą XRD.
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Visualization and quantification of lab vibratory compacting process for aggregate base materials using accelerometer
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Influence of the Phenomenon of Spectrum Leakage on the Evaluation Process of Metrological Properties of Power Quality Analyser
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Second and third harmonic nonlinear optical process in spray pyrolysed Mg:ZnO thin films
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Quality assessment criteria in the process of collective communication of passengers in selected urban transport organizations
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Documenting the de-identification process of clinical and imaging data for AI for health imaging projects
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Modifications of the heat source model in numerical analyses of the metal-cored arc welding process
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DEIS assessment of AISI 304 stainless steel dissolution process in conditions of intergranular corrosion
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Application of electrochemical impedance spectroscopy to monitoring discharging process of nickel/metal hydride battery
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Determining manoeuvre detection threshold of GRNN filter in the process of tracking in marine navigational radars
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STUDYING THE PROCESS OF OBTAINING PHOSPHATES OF METALS BASED ON THE PHASE EQUILIBRIA OF FOUR COMPONENT SYSTEMS
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Enhanced Degradation of Ethylene in ThermoPhotocatalytic Process Using TiO2/Nickel Foam: Reaction Mechanism
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Experimental investigation and process parameter optimization of sheet metal bending by line heating method
PublicationThe present study is concerned with the experimental investigation of sheet metal deforming by line heating method that incorporates the combined effect of traverse speed of the torch, thickness of the sheet metal, and the number of passes of the torch. For the numerical analysis of metal bending by line heating, the
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Monitoring the curing process of epoxy adhesive using ultrasound and Lamb wave dispersion curves
PublicationMonitoring the stiffness of adhesives is a crucial issue when considering the durability andstrength of adhesive joints. While there are many studies conducted on specimens madeonly from adhesive, the problem of curing of an adhesive film in real joints is moderatelyconsidered. This paper presents the monitoring of stiffening of epoxy adhesive using ultra-sound. Ultrasonic pulse velocity method was firstly applied for monitoring...
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Removal of Siloxanes from Model Biogas by Means of Deep Eutectic Solvents in Absorption Process
PublicationThe paper presents the screening of 20 deep eutectic solvents (DESs) composed of tetrapropylammonium bromide (TPABr) and glycols in various molar ratios, and 6 conventional solvents as absorbents for removal of siloxanes from model biogas stream. The screening was achieved using the conductor-like screening model for real solvents (COSMO-RS) based on the comparison of siloxane solubility in DESs. For the DES which was characterized...
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Optimisation of turbine shaft heating process under steam turbine run-up conditions
PublicationAn important operational task for thermal turbines during run-up and run-down is to keep the stresses in the structural elements at a right level. This applies not only to their instantaneous values, but also to the impact of them on the engine lifetime. The turbine shaft is a particularly important element. The distribution of stresses depends on geometric characteristics of the shaft and its specific locations. This means a groove manufactured...
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Analyzing content of tasks in Business Process Management. Blending task execution and organization perspectives
PublicationAn efficient organization, management, and execution of tasks are central for the successful functioning of any organization. This topic was on the research agenda already in the early 1950s and keeps attracting the scientific community's attention today. Continuous advances and penetration of technologies in organizations are expected to increase task variety and complexity. This creates a constant demand for new methods to analyze,...
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Digitalization Process and Its Impact on Economic Growth A Panel Data Study for Developing Countries
PublicationThis book analyses the impact of Information and Communication Technologies (ICTs) on economic development. It contains theoretical and empirical studies, including panel studies on various issues facing developing countries, such as education, corruption, economic growth, government expenditure, financial inclusion, foreign direct investment, infrastructure, economic and social welfare, and inequality. Each chapter offers a well-conceived...
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Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties
PublicationIn this work, for the first time, the influence of scaling up the process of titanium dioxide nanotube (TiO2NT) synthesis on the photoelectrochemical properties of TiO2 nanotubes is presented. Titanium dioxide nanotubes were obtained on substrates of various sizes: 2 × 2, 4 × 4, 5 × 5, 6 × 6, and 8 × 8 cm2. The electrode material was characterized using scanning electron microscopy as well as Raman and UV–vis spectroscopy in order...
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Analysis of the Heating Process of Hydraulic Motors during Start-Up in Thermal Shock Conditions
PublicationConditions that prevail during harsh winters and hot summers pose a serious challenge for machine designers building devices suitable for operation in extreme weather. It is essential for the designers and the users to define the principles and conditions for the safe operation of machines and devices with hydraulic drive in low ambient temperatures. Bearing in mind the above, the author tested the hydraulic motors in thermal shock...
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Sustainable Urban Mobility Plans: implementation process and indicators to evaluate effects on physical activity
PublicationBackground: Active mobility and public transport increase physical activity (PA) levels. With varying intensity and effectiveness, European cities implement Sustainable Urban Mobility Plans (SUMPs) to spur transport-related PA. Therefore, we aim to examine drivers and barriers to SUMP implementation and assess its influence on PA across European cities. Methods: We screened policy reports to gain insights into SUMP implementation...
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Interfacial water controls the process of adsorption of hyperactive antifreeze proteins onto the ice surface
PublicationA mechanism of interactions between the ice-binding surface of a hyperactive antifreeze protein molecule and the ice surface is proposed, involving the influence of water present between the two surfaces on the behavior of the approaching molecule. It is demonstrated that the interfacial water, even before its full solidification, can act as a factor that pushes away or pulls nearer the protein molecule to ensure its proper positioning....
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Hydro Power Plant in the Process of Voltage Control in the Electric Power System and the System Restoration
PublicationThe article covers selected issues related to the share of hydroelectric power in the process of rebuilding the power system after black-out and voltage control during that process. Selected results of measurements made during the creation of the transmission chain for the need to start a block of a thermal power plant from a hydroelectric power plant were presented.
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Studenckie Staże Zawodowe - Analiza Procesu Kwalifikacji w Kontekście Dopasowania Człowiek - Organizacja
PublicationProces kwalifikacji studentów na staże zawodowe ma charakter intuicyjny, główną rolę odgrywają w nich studenci oraz pracodawcy - oferenci staży. Skuteczność procesu można pokazać poprzez analizę sytuacji krytycznych. Artykuł omawia sytuacje, jakie pojawiły się w dwóch edycjach kwalifikowania na staże zawodowe. Do analizy procesu zastosowano dwie koncepcje teoretyczne: model ASA oraz dopasowanie organizacyjne, stosowane w doborze...
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Modelling AOB-NOB competition in shortcut nitrification compared with conventional nitrification-denitrification process
PublicationIn particular, mainstream deammonification and/or shortened nitrificationdenitrification via nitrite (so-called “nitrite shunt”) is a promising new treatment concept that has the potential to revolutionise how nitrogen removal is achieved at WWTPs. Understanding the role of the AOB/NOB competition in the nitrogen cycle in wastewater treatment systems will change operational strategies of the novel nitrogen removal processes. The...
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Migration of container terminals as their natural process of evolution: Case study of Gdańsk and Gdynia ports
PublicationThe paper proposes a theoretical model of container terminals and container port development, based on the life cycle theory, threshold theory and catastrophe theory, and in references to Kuznets' swings (interpreted as waves of infrastructural investments), and Kondratiev long economic waves. The aim of this model is to explain the development process of a container terminal and a port within one technological generation, as...
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Numerical modelling of the mesofracture process of sintered 316L steel under tension using microtomography
PublicationThis paper concerns numerical modelling of the deformation process, taking into account the local fracture of porous 316L sinters at the mesoscopic scale using the finite element method. Calculations are performed with the use of geometrical models, to map the realistic shape of the porous mesostructure of the material, obtained by means of computed microtomography. The microtomographic device has limited and insufficient measurement...
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Modular Approach for Modelling Warming Up Process in Water Installations with Flow-Regulating Elements
PublicationThe paper presents a new method for modelling the warming up process of a water system with elements regulating the flow in a stochastic manner. The paper presents the basic equations describing the work of typical elements which the water installation is composed of. In the proposed method, a new computational algorithm was used in the form of an iterative procedure enabling the use of boundary conditions that can be stochastically...
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Automatyzacja procesu rehabilitacji dzieci z paralysis cerebralis infantium oraz osteogenesis imperfecta
PublicationCelem prac badawczych będących tematem dysertacji jest opracowanie podstaw metodologicznych dla automatycznej platformy eksperckiej asystującej podczas procesu rehabilitacji dzieci chorych na paralysis cerebralis infantium oraz osteogenesis imperfecta. Przedstawione cele rozprawy do realizacji wymagały podejścia wieloetapowego, w którym wykonano szereg prac związanych m.in. z: gromadzeniem odpowiednich danych, selekcją efektywnych...
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Swelling process investigation of polymer layer deposited on siliceous materials using SAXS method
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Application of electronic nose to effectiveness monitoring of air contaminated with toluene vapors biofiltration process
PublicationThe research presents the application of electronic nose (combined with MLR model) to on-line effectiveness monitoring of biofiltration of air contaminated with hydrophobic, odorous compound (toluene vapors). The research was conducted using two-section biotrickling filter inhabited by Candida environmental isolates. Gas chromatography was used as the comparative technique to obtain reliable quantification of toluene concentration...
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Laboratory bioreactor with pH control system for investigations of hydrogen production in the dark fermentation process
PublicationThe work presents the construction of a low-cost research bioreactor equipped with a pH control sys-tem. The developed bioreactor was applied for hydrogen production in the dark fermentation process using Enterobacter aerogenes ATCC 13048. Presented paper compares the results obtained during the process without and with pH regulation for different feed materials: glucose, energetic poplar hydro-lysates, acid whey and glycerol....
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High-temperature heat pumps – potential technology for heat recovery and production of process heat
PublicationIn the paper, the high temperature vapour compressor based heat pump with a selection of working fluids, both perspective and ecological ones, is considered. Such system is not yet commercially available on the market and in author’s opinion it has significant potential for various applications. In the presented analysis it was assumed that the heat source has a temperature of 50oC and the temperature lift is 60, 80 and 100K respectively....