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Generalized adaptive comb filters/smoothers and their application to the identification of quasi-periodically varying systems and signals
PublikacjaThe problem of both causal and noncausal identification of linear stochastic systems with quasiharmonically varying parameters is considered. The quasi-harmonic description allows one to model nonsinusoidal quasi-periodic parameter changes. The proposed identification algorithms are called generalized adaptive comb filters/smoothers because in the special signal case they reduce down to adaptive comb algorithms used to enhance...
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New Algorithms for Adaptive Notch Smoothing
PublikacjaThe problem of extraction/elimination of a nonstationary complex sinusoidal signal buried in noise is considered. This problem is usually solved using adaptive notch filtering (ANF)algorithms. It is shown that accuracy of signal estimation can be increased if the results obtained from ANF are further processed using a cascade of appropriately designed filters. The resulting adaptive notch smoothing (ANS) algorithms can be employed...
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Identification of quasi-periodically varying systems with quasi-linear frequency changes
PublikacjaThe problem of identification of linear quasi-periodically varying systems is considered. This problem can be solved using generalized adaptive notch filtering (GANF) algorithms. It is shown that accuracy of system parameter estimation can be increased if the results obtained from GANF are further processed using a cascade of appropriately designed filters. The resulting generalized adaptive notch smoothing (GANS) algorithms can...
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Nitrogen-doped diamond thin films: potential application in Fabry-Pérot interferometer
PublikacjaIn this paper we present results of preliminary research of using nitrogen-doped diamond (NDD) films as reflective layer in Fabry-Pérot interferometer. NDD films were deposited on Si substrates by Microwave Plasma Enhanced Chemical Vapor Deposition (MPECVD) with the use of CH4, H2 and N2 gas mixtures. During deposition process methane flow rate varied while nitrogen flow was constant. We performed series of measurements which showed...
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Artificial Neural Networks in Classification of Steel Grades Based on Non-Destructive Tests
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Predicting Compressive Strength of Cement-Stabilized Rammed Earth Based on SEM Images Using Computer Vision and Deep Learning
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Sports Elite Means Vaccine Elite? Concerns and Beliefs Related to COVID-19 Vaccines among Olympians and Elite Athletes
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Purification and biochemical characteristic of a cold-active recombinant esterase from Pseudoalteromonas sp. 643A under denaturing conditions.
PublikacjaIn this paper production of a cold-active esterase EstA from the Antarctic bacterium Pseudoalteromonas sp. 643A in E. coli expression system was described. The purification and biochemical characteristic of EstA were performed in the presence of urea and then compared with results obtained for the esterase with no addition of urea and isolated from the native source. In both cases the cold-active enzyme displayed similar properties....
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In Situ Random Microseeding and Streak Seeding Used for Growth of Crystals of Cold-Adapted beta-D-Galactosidases: Crystal Structure of betaDG from Arthrobacter sp. 32cB
PublikacjaThere is an increasing demand for cold-adapted enzymes in a wide range of industrial branches. Nevertheless, structural information about them is still scarce. The knowledge of crystal structures is important to understand their mode of action and to design genetically engineered enzymes with enhanced activity. The most difficult task and the limiting step in structural studies of cold-adapted enzymes is their crystallization,...
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Isolation and Characterization of Phenol-Degrading Psychrotolerant Yeasts
PublikacjaIn this study, the potential of selected psychrotolerant yeast strains for phenol biodegradation was studied. From 39 strains isolated from soil and water samples from Rucianka peat bog, three psychrotolerant yeast strains: A011, B021 and L012 showed the ability to phenol degradation. The result shows that all three yeast strains could degrade phenol at 500 mg l-1 and 750 mg l-1 concentration, whereas strains A011 and L012 could...
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ATTEMPTS OF THERMAL IMAGING CAMERA USAGE IN ESTIMATIONS OF THE CONVECTIVE HEAT LOSS FROM A VERTICAL PLATE
PublikacjaIn this paper a new method for determining heat transfer coefficients using a gradient method has been developed. To verify accuracy of the proposed method vertical isothermal heating plate with natural convection mechanism has been examined. This configuration was deliberately chosen, because of the fact that such case is historically the earliest and most thoroughly studied and its rich scientific documentation - the most reliable....
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The use of lightweight aggregate saturated with PCM as a temperature stabilizing material for road surfaces.
PublikacjaThis paper presents the possibility of adding lightweight building aggregates to increase the stability – mechanical as well as thermal - of constructions and road objects. This stability can be achieved through saturating the porous granules of aggregate with a phase-change material (PCM) that allows the accumulation of solar heat. Intense solar radiation, especially during the summer, can cause the asphalt on road surfaces, bridges...
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Application of Electronic Nose to Ambient Air Quality Evaluation With Respect to Odour Nuisance in Vicinity of Municipal Landfills and Sewage Treatment
PublikacjaThis chapter contains information about application of the electronic nose type instruments to evaluation of ambient air odour quality connected with such sectors of human activity as municipal landfills or sewage treatment plants. The authors present potential sources of emission from these sectors, characterize the chemical compounds responsible for presence of unpleasant odours, describe the influence of those compounds on human...
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ReFlexeNN - the Wearable EMG Interface with Neural Network Based Gesture Classification
PublikacjaThe electromyographic activity of muscles was measured using a wireless biofeedback device. The aim of the study was to examine the possibility of creating an automatic muscle tension classifier. Several measurement series were conducted and the participant performed simple physical exercises - forcing the muscle to increase its activity accordingly to the selected scale. A small wireless device was attached to the electrodes placed...
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Identification of pollutants at the adjacent areas to the landfill site using two dimensional gas chromatography with mass spectrometry technique
PublikacjaMunicipal landfills are considered one of the main sources of air pollutants. In this article is presented the use of a modern analytical technique: a two dimensional gas chromatography to identify the substances in the atmospheric air near a waste processing plant located in Gdansk. In order to determine the types of substances occurring in different atmospheric conditions, the study was conducted from February to April 2016....
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Comprehensive two dimensional gas chromatography coupled with mass spectrometry as tool for characterization of the main pollutants present in atmospheric air in Gdansk
PublikacjaNowadays, the technique that is commonly used to identify and quantify the chemical compounds in gas sample is gas chromatography. The separation resolution in gas chromatography can be improved by applying the modulation technique. In this paper present is the most important information regarding the pollutants present in atmospheric air. The areas in which the tests were carried out are one of the largest industrial zones in...
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Comparison of the Measurement Techniques Employed for Evaluation of Ambient Air Odour Quality Influenced by Operation of Industrial Sewage Treatment Plant
PublikacjaThe paper presents the results of investigation on ambient air quality evaluation with respect to concentration of odorants in a vicinity of a sewage treatment plant of the LOTOS Group S.A. petroleum plant. The investigation was performed during winter season using a prototype of electronic nose and the Nasal Ranger field olfactometers. The prototype was equipped with a set of six semiconductor sensors by FIGARO Co. and one PID-type...
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Parametric versus nonparametric modelling of dynamic susceptibility contrast enhanced MRI based data
PublikacjaDynamic tracking of a bolus of a paramagnetic agent (dynamic susceptibility contract - DSC) in MRI (magnetic resonance imaging) measurements is successfully used for assessment of the tissue perfusion and the other features and functions of the brain (i.e. cerebral blood flow - CBF, cerebral blood volume - CBV, mean transit time - MTT). The parametric and nonparametric approaches to the identification of MRI models are presented...
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Czy istnieje potrzeba powiązania programu ochrony przeciwpowodziowej ze strategią rozwoju drogi wodnej Dolnej Wisły
PublikacjaW pracy zawarto koncepcję rozwoju drogi wodnej Wisły na odcinku Bydgoszcz - Gdańsk. Przedstawione są bariery utrudniające rozwój transportu wodnego i przesłanki przemawiające za aktywizacją dróg wodnych w Polsce. Zaproponowano drogę wodną Wisły, jako łańcuch w ogólnopolskiej sieci transportowej z terminalami kontenerowymi na istniejących nabrzeżach w Porcie Gdańsk i nowym terminalem w Bydgoszczy, a także przyłączenie jej do ogólnopolskiej...
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Technika satelitarna w telekomunikacji
PublikacjaScharakteryzowano różne rozwiązania satelitarnych systemów telekomunikacyjnych, głównie pod względem rodzaju zastosowanej orbity, co ma zasadnicze znaczenie użytkowe. Dokonano przeglądu dotychczasowych reprezentatywnych projektów takich systemów, analizując kolejne fazy ich rozwoju oraz występujące bariery technologiczno-ekonomiczne. Przedstawiono stan prac ETSI w zakresie specyfikacji GMR, której praktycznym przykładem są pierwsze...
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Obowiązek ochrony środowiska naturalnego jako granica swobody działalności gospodarczej w Polsce
PublikacjaDziałalność gospodarcza powinna być prowadzona zgodnie z poszanowaniem środowiska naturalnego w ramach obowiązujacych w tym zakresie unormowań prawnych.Gospodarka odpadami oraz strategiczne podejście do międzynarodowego zarzadzania odpadami - to aktualne problemy w przedsiębiorstwach. Instrumenty polityki ochrony środowiska w odniesieniu do przedsiębiorstw, takie jak: pozwolenie zintegrowane, ocena oddziaływania na środowisko,...
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Wdrażanie innowacyjnych rozwiązań w przedsiębiorstwie akademickim
PublikacjaPrzedstawiono uwarunkowania organizacyjne i prawne realizacji projektów badawczych prowadzonych na politechnice. Na uczelni technicznej występują bariery w zakresie rozwoju techniki i technologii ograniczające proces wdrażania nowych rozwiązań do praktyki przemysłowej. Pokazano przyczyny braku zainteresowania ze strony przemysłu innowacyjnymi rozwiązaniami, zwłaszcza chronionymi patentami. Z drugiej strony istnieje w przemyśle...
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Numerical calculations of behaviour of ship double-bottom structure during grounding
PublikacjaIdeą projektu CORET jest dodanie do obecnej konstrukcji dna podwójnego statku specjalnych powłok polimerowo-betonowych w celu zwiększenia odporności na rozszczelnienie podczas kolizji, czy wejścia na mieliznę. Aby poprawnie zaprojektować te bariery ochronne konieczne jest przeprowadzenie symulacji numerycznej. Tworzenie modelu numerycznego konstrukcji podczas kolizji jest bardzo złożone i wymaga wykonania symulacji pomocniczych...
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Stan i możliwości rozwoju dróg wodnych w regionie
PublikacjaObecnie stan techniczny większości dróg wodnych w regionie, w tym międzynarodowej drogi wodnej E-70, nie pozwala na prowadzenie żeglugi towarowej na większości jej odcinków. Dla dostosowania polskich dróg wodnych do wymagań określonych w porozumieniu AGN (Europejska Konwencja AGN - Europejskie Porozumienie w Sprawie Wielkich Dróg Żeglownych o Międzynarodowym Znaczeniu) przewidującym, że drogi śródlądowe o znaczeniu międzynarodowym...
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Władza platform.Za fasadą Google, Facebooka i Spotify
PublikacjaTo książka o władzy platform Facebooka i Google, o kontrolowaniu człowieka, grup społecznych, a nawet państw. O „magii” uzależniania ludzi, celebracji osobliwych mitów, kulcie porażki, mirażach bogactwa, kreatywności i kariery. To książka o algorytmizacji codziennego życia, feudalnych stosunkach na platformach, ich niewolnikach i menedżerach pokutnikach. O zarządzaniu antykonkurencyjnymi platformami, o „strefach zabójstw” rynkowych...
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System Monitorowania i Nadzoru Ruchu Kolejowego
PublikacjaW pracy omówiono koncepcję oraz podstawowe założenia funkcjonalne Systemu Monitorowania i Nadzoru Ruchu Kolejowego pod nazwą InnoRAIL, który pozwoli na zniwelowanie bariery technologicznej w dostępie pasażerów do informacji o aktualnych położeniach i opóźnieniach pociągów. Kluczowym zadaniem systemu będzie dystrybucja informacji pochodzących z systemów SEPE oraz SITKol do podróżnych i załóg pociągów, za pośrednictwem różnych kanałów...
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BADANIA NUMERYCZNE ZDERZENIA AUTOBUSU W UKŁADZIE BARIERA I KRATOWNICOWA KONSTRUKCJA WSPORCZA
PublikacjaZdarzenia spowodowane wypadnięciem pojazdu z trasy stanowią 20 – 30 % ogółu zdarzeń niebezpiecznych na drogach. Najczęściej występującymi przeszkodami i niebezpiecznymi obiektami przy drodze, w które uderza wypadający z niej pojazd są: bariery na autostradach i drogach ekspresowych oraz drzewa, słupy i znaki drogowe na innych szlakach. Do opracowania metody projektowania, tj. doboru lokalizacji i rodzaju urządzeń bezpieczeństwa...
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Bezpłatny transport publiczny narzędziem kształtowania przewagi konkurencyjnej obszaru metropolitalnego.
PublikacjaDo kluczowych kompetencji władz należy sprawne wykorzystanie dostępnych narzędzi w celu budowania przewagi konkurencyjnej regionu. Holistyczne spojrzenie na zagadnienie organizacji i funkcjonowania systemu transportowego w obszarach zurbanizowanych pozwala dostrzec ogromną rolę transportu publicznego jaki może pełnić w procesie zarządzania rozwojem obszaru metropolitalnego. Odpowiednio działający system transportu publicznego może...
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Badania numeryczne zderzenia autobusu w układzie bariera i kratownicowa konstrukcja wsporcza
PublikacjaZdarzenia spowodowane wypadnięciem pojazdu z trasy stanowią 20 – 30 % ogółu zdarzeń niebezpiecznych na drogach. Najczęściej występującymi przeszkodami i niebezpiecznymi obiektami przy drodze, w które uderza wypadający z niej pojazd są: bariery na autostradach i drogach ekspresowych oraz drzewa, słupy i znaki drogowe na innych szlakach. Do opracowania metody projektowania, tj. doboru lokalizacji i rodzaju urządzeń bezpieczeństwa...
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The associations between serum VEGF, bFGF and endoglin levels with microvessel density and expression of proangiogenic factors in malignant and benign ovarian tumors
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Koncert duetu fortepianowego: Anna Liszewska i Anna Mikolon
WydarzeniaKoncert z cyklu „Akademia Muzyczna w Politechnice”: duet fortepianowy Anna Liszewska i Anna Mikolon. W programie 6 Polonezów op. 42 i 6 Mazurów op. 38 Zygmunta Noskowskiego.
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Obliczanie składowej OEE przy wielu operacjach technologicznych
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Fe local structure in Pt-free nitrogen-modified carbon based electrocatalysts: XAFS study
PublikacjaThe paper presents a new results on the bonding environment (coordination number and geometry) and on oxidation states of Fe in nitrogen-modified Fe/C composites used as Pt-free catalysts for oxygen reduction in Direct Hydrogen Fuel Cells. Starting from glucose or fructose, two catalysts displaying different electrochemical performance were prepared and studied in the form of pristine powder and thin catalytic layer of electrode...
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Contextualizing a Knowledge Base by Approximation – A Case Study
PublikacjaModular knowledge bases give their users opportunity to store and access knowledge at different levels of generality. In this paper we present how to organize a modular knowledge bases organized into contexts in which a user can express their knowledge in much simplified way, yet without losing its precision. The work is centered around the notion of approximation - i.e. reducing the arity of predicates used. The presentation is...
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Chitosan-based inks for 3D printing and bioprinting
PublikacjaThe advent of 3D-printing/additive manufacturing in biomedical engineering field has introduced great potential for the preparation of 3D structures that can mimic native tissues. This technology has accelerated the progress in numerous areas of regenerative medicine, especially led to a big wave of biomimetic functional scaffold developments for tissue engineering demands. In recent years, the introduction of smart bio-inks has...
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Podstawy inżynierii genetycznej 2023/2024
Kursy Online -
Interactions in aqueous solutions of K-peptide and DMSO – spectroscopic and calorimetric studies
PublikacjaIntroduction K-peptide (GILQINSRW) – short 9 amino acid fragment of the hen egg white lysozyme has the ability to form amyloid structures. Dimethyl sulfoxide (DMSO) is an osmolyte which can alter this ability. Our goal was to get an insight into the mechanism of Kpeptide-DMSO interactions in aqueous solutions. Such a knowledge can be helpful to understand processes leading to various neurodegenerative diseases. Methods ATR-FTIR...
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Hydrogen assisted cracking of 2205 duplex stainless steel in synthetic sea water
PublikacjaThe cracking behavior of 2205 duplex stainless steels (DSSs) in synthetic sea water under cathodic polarization condition was investigated. (SSRT) method was employed in aim to evaluate the susceptibility to hydrogen assisted cracking. The results showed that the reduction in the uniform elongation (UEL) and the reduction of area (RA) varied with the applied cathodic current density. Significant reductions in ductility were found,...
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NETWORKS, STAKEHOLDERS AND ENTREPRENEURIAL ECOSYSYSTEMS IN CURRENT POLISH ECONOMYGUT
PublikacjaThis book is dedicated to widely understood entrepreneurship and financial system in different polish ecosystems. In particular, there is described influence of supporting entrepreneurship to investment development in Walbrzych agglomerations communes with the results of questionnaires for varied groups of inhabitants, entrepreneurs and territorial self-governments. There is also presented analysis of relations within academic...
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Antecedents and Consequences of Brand Loyalty
PublikacjaThe objective of this paper is to review, systematize, and summarize empirical research on the antecedents and consequences of brand loyalty. The literature review has identified five categories of antecedents to brand loyalty associated with consumer, brand, social, corporate and relational factors. The type of loyalty formed varies according to the combination of various antecedents, with premium loyalty being considered the...
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Substrate Dependence in the Formation of Au Nanoislands for Plasmonic Platform Application
PublikacjaIn this work, the influence of the various substrates on Au nanoisland formation has been studied. Nanostructures were obtained via annealing of thin Au films. In order to determine nanoisland formation mechanisms, correlation between an initial film thickness and temperature of formation, shapes, and dimensions of nanostructures was examined. For the surface morphology studies, nanograin structure, and chemical composition analysis,...
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Finite element modeling of plastic hinges based on ductility demand-capacity method using nonlinear material for dynamic analysis
PublikacjaThe article discusses modeling plastic hinges in reinforced concrete interme-diate supports using finite elements methods. The ductility demand-capacitymethod was used to determine the geometrical parameters of cross-section plas-ticization zones, their ability to move and rotate, as well as their ductility. Dueto the varied geometry and stiffness of the supports and their nonlinear behav-ior under dynamic load, this method was...
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Influence of terpenes on indoor air quality
PublikacjaThe aim of this study was to investigate air quality in hairdresser salons, focusing on terpenes determination. Terpenes are known reactive volatile organic compounds that contribute to secondary organic aerosol formation. Those compounds are frequently found in cosmetic products as fragrance agents. Hairdresser salons are special kind of environment, where secondary organic aerosol concentration may be elevated. One hairdresser...
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Train the trainer course
PublikacjaThis chapter presents the concept, evaluation and evaluation results for the train the trainer. This concept of train the trainers is prepared within Workpackage 5 of EU-funded project: MASTER BSR (Erasmus+ Strategic Partnership Programme). Due to the nature of adult learning the content is designed for the use of participatory methods (involved, active). This method uses various techniques of active learning e.g. group work,...
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Habitat-related patterns of soft-bottom macrofaunal assemblages in a brackish, low-diversity system (southern Baltic Sea)
PublikacjaCoastal areas provide a high variety of sedimentary habitats that influence the structure of resident fauna even on small geographical scales. Therefore, examinations of spatial variations in benthic assemblages require background knowledge of the environmental and biotic heterogeneity of habitats in order to understand ecological processes in such areas. The effect of habitat-related abiotic and biological variables on macrofaunal...
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A Comparative Study of Fuzzy SMC with Adaptive Fuzzy PID for Sensorless Speed Control of Six-Phase Induction Motor
PublikacjaMulti-phase motors have recently replaced three-phase induction motors in a variety of applications due to the numerous benefits they provide, and the absence of speed sensors promotes induction motors with variable speed drives. Sensorless speed control minimizes unnecessary speed encoder cost, reduces maintenance, and improves the motor drive’s reliability. The performance comparison of the fuzzy sliding mode controller (FSMC)...
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The Metal-Free Regioselective Deuteration of 2-Methylquinolin-8-ol and 2,5-Dimethylquinolin-8-ol, Spectroscopic and Computational Studies
PublikacjaAbstract: Aim and Background: Introducing deuterium to a molecule is of interest to a wide variety of research, including investigation of reaction mechanisms or kinetics, analysis of drug metabolism, structural elucidation of molecules, and syntheses of isotopically labeled materials used for NMR spectroscopy and medicinal research. Objective: The transition-metal-free regioselective deuteration of 2-methylquinolin-8-ol...
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Accelerated Gradient-Based Optimization of Antenna Structures Using Multi-Fidelity Simulations and Convergence-Based Model Management Scheme
PublikacjaThe importance of numerical optimization has been steadily growing in the design of contemporary antenna structures. The primary reason is the increasing complexity of antenna topologies, [ a typically large number of adjustable parameters that have to be simultaneously tuned. Design closure is no longer possible using traditional methods, including theoretical models or supervised parameter sweeping. To ensure reliability, optimization...
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A Comparative Study of Fuzzy SMC with Adaptive Fuzzy PID for Sensorless Speed Control of Six-Phase Induction Motor
PublikacjaMulti-phase motors have recently replaced three-phase induction motors in a variety of applications due to the numerous benefits they provide, and the absence of speed sensors promotes induction motors with variable speed drives. Sensorless speed control minimizes unnecessary speed encoder cost, reduces maintenance, and improves the motor drive’s reliability. The performance comparison of the fuzzy sliding mode controller (FSMC)...
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Assessment of River Water Quality and Pollution Status Using Physicochemical and Biometrics, Awetu River, Ethiopia
PublikacjaThe surface water is contaminated by a variety of synthetic organic and inorganic compounds, chemicals, and nutrients; due to this reason, the quality of the water resources of Ethiopia is declining at an alarming rate, resulting in severe environmental degradation. The main objective of the study was to recognize the pollution status river for the study area by physicochemical parameters and the extent of microbial environmental...