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Elimination of Impulsive Disturbances From Stereo Audio Recordings Using Vector Autoregressive Modeling and Variable-order Kalman Filtering
PublikacjaThis paper presents a new approach to elimination of impulsive disturbances from stereo audio recordings. The proposed solution is based on vector autoregressive modeling of audio signals. Online tracking of signal model parameters is performed using the exponential ly weighted least squares algo- rithm. Detection of noise pulses an d model-based interpolation of the irrevocably distorted sampl es is realized using an adaptive, variable-order...
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Elimination of impulsive disturbances from stereo audio recordings
PublikacjaThis paper presents a new approach to elimination of impulsive disturbances from stereo audio recordings. The proposed solution is based on vector autoregressive modeling of audio signals. On-line tracking of signal model parameters is performed using the stability-preserving Whittle-Wiggins-Robinson algorithm with exponential data weighting. Detection of noise pulses and model-based interpolation of the irrevocably distorted samples...
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Testing A Novel Gesture-Based Mixing Interface
PublikacjaWith a digital audio workstation, in contrast to the traditional mouse-keyboard computer interface, hand gestures can be used to mix audio with eyes closed. Mixing with a visual representation of audio parameters during experiments led to broadening the panorama and a more intensive use of shelving equalizers. Listening tests proved that the use of hand gestures produces mixes that are aesthetically as good as those obtained using...
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Determination of time delay between ventricles contraction using impedance measurements
PublikacjaThe paper presents a novel approach to assessment of ventricular dyssynchrony basing on multichannel electrical impedance measurements. Using a proper placement of electrodes, the sensitivity approach allows estimating time difference between chambers contraction from over determined nonlinear system of equations. The theoretical considerations which include Finite Element Method simulations were verified using measurements on...
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ANALYSIS OF THE LOAD-CARRYING CAPACITY OF A HYDRODYNAMIC WATER-LUBRICATED BEARING IN A HYDROELECTRIC POwER PLANT
PublikacjaThe paper presents an analysis of the load-carrying capacity of a historic hydrodynamic water-lubricated radial bearing of an unconventional segment design installed in the Braniewo Hydroelectric Power Plant. The aim of the calculations was to determine whether the bearing operates in the conditions of hydrodynamic or mixed lubrication, as well as to establish the optimal geometry of the axial grooves allowing for the highest load-carrying...
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Organizacja systemu opieki nad seniorami wyzwaniem dla samorządów lokalnych
PublikacjaA significant part of the activities undertaken so far under the senior policy, also at the local level, have been focused on seniors’ social (physical and educational) activation. The growing number of the oldest seniors, with limited independence, living alone in single‑person households, away from their families, will force the policy priorities to be reoriented in such a way as to develop efforts to provide different types...
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New Materiality-towards ‘Media Environments
PublikacjaArticle presents media solutions providing new materiality of architectural spaces. Media solutions in architecture evolve in new forms. Articlepresentsboth the developmentof new technological solutionsas well as new ways of application of media solutions in relation toarchitectural form. The aim of the article is to show technical aspects of new materiality - intelligent materials, allowing transmission of changeable visual content...
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Luminescent and Scintillation Properties of CeAlO3 Crystals and Phase-Separated CeAlO3/CeAl11O18 Metamaterials
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Approaches to Static Digestion Models
PublikacjaIt is not possible to look in detail at the wide range of static digestion methods that have been used to date. However, this section looks at some of the general approaches that have been used to look at the digestion of various nutrients and bioactives. I have focussed on the two main nutrients that undergo digestion in the upper GI tract, namely protein and lipid. In the case of protein, the research has largely been driven...
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Usuwanie azotu z wód poosadowych w procesie nitryfikacji - denitryfikacji w reaktorze typu SBR
PublikacjaOczyszczanie odcieków w wydzielonych systemach pozwala w znaczący sposób obniżyć ładunek azotu kierowany do reaktorów biologicznych. Celem pracy było określenie czasu adaptacji osadu do wód poosadowych oraz zewnętrznego źródła węgla (etanol, olej fuzlowy). W przeprowadzanych testach obserwowano znaczący wzrost szybkości denitryfikacji z 2 mg N/(gsmo*h) do ponad 10 mg N/(gsmo*h) w ciągu trzech tygodni. Wymagany okres adaptacji osadu...
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Zewnętrzne źródło węgla do poprawy usuwania azotu ze ścieków
PublikacjaCelem prowadzonych badań kinetycznych była ocena przydatności produktów odpadowych z produkcji alkoholu do intensyfikacji procesu biologicznej denitryfikacji, w głównym ciągu oczyszczania komunalnych oczyszczalni ścieków, opartych na metodzie osadu czynnego. Do badań wykorzystane były produkty z kilku wybranych zakładów przemysłowych (destylarni i gorzelni). Podstawą weryfikacji przydatności analizowanych produktów odpadowych...
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WSN for intelligent street lighting system
PublikacjaIn this article authors propose to apply WSN to intelligent street lighting system. As a result of such a combination one obtains a system designed to increase functionality of light installations for a wide range of applications and introduce a platform for new additional services, which meets current and future user needs. The system is composed of WSN nodes integrated with light sources based on high power LED diodes, which...
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Analytical procedures for determination of cocaine and its metabolites in biological samples
PublikacjaThe dangerous effects and increased usage of illicit drugs have inspired the development of analytical methodologies. We based our review of analytical procedures for determination of cocaine (COC) and its metabolites on literature from the past two decades. Our main aim was to compare the capabilities of different analytical techniques. The diversity of matrices from which COC is determined (e.g., blood, hair, saliva, plasma,...
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GIUSEPPE VOLPI. IL GRANDE MEDIATORE TRA ISTITUZIONI, POLITICA ED ECONOMIA
PublikacjaGiuseppe Volpi di Misurata represented a mediation point between different interests both in the economic field and in the complex national – but also regional and local – political balance that long underpinned the fascist regime. This article intends to revisit this figure between the 1920s and the Second World War. The attempt will be made to identify, through an approach that will be chronological and thematic, the passages...
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Variability of relationship between cities and nature in landscape architecture= Zmienność relacji miedzy miastem a naturą na przykładzie architektury krajobrazu miast
PublikacjaInterpreting and creating the relations between nature and city are the process of learning which is a subject of permanent conceptualization. It is characterized by the culutrality due to human nature and own ability to perceive oneself in the context of the relationship between own environmental and cultural nature. The way of interpreting the nature and providing it with different features affected significantly the development...
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Phosphate and Thiophosphate Biphenyl Analogs as Steroid Sulfatase Inhibitors
PublikacjaIn the present work, we report convenient methods for the synthesis and biological evaluation of phosphate and thiophosphate biphenyl derivatives exhibiting steroid sulfatase (STS) activity. The described synthesis is based on straightforward preparation of biphenyl-4-ol and 40-hydroxybiphenyl- 4-carboxylic acid ethyl ester modified with various phosphate or thiophosphate moieties. The inhibitory effects of these compounds were...
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OBSERVATION OF THE THERMOSIPHON EFFECT IN THE CIRCULATION OF ACETONE AS WORKING FLUID IN MODERN COOLING SYSTEM
Publikacjaplants or computer server rooms has led to the demand for new and reliable methods for electronic cooling. Because of bigger and bigger power levels and miniaturization of the electronic devices, lack of free space in such a high heat flux. The increasing integration of electronic logy that supposed to be designed for high thermal performance, low mass, and able to work in harsh environments. In this paper presented a prototype...
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DME as alternative fuel for compression ignition engines – a review
PublikacjaThe ecological issues and the depletion of crude oil, has led the researchers to seeking for non-petroleum based alternative fuels, along with more advanced combustion technologies, and after-treatment systems. The use of clean alternative fuels is the one of the most perspective method that aiming at resolving of the said issues. One of the promising alternative fuels that can be used as a clean highefficiency compression ignition...
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Human Centric Lighting. The New X Factor?
PublikacjaWe live in challenging times, and one could even claim we’re experiencing a revolution in lighting with LED technology taking over the world. Part of this rapid change involves a concept called Human Centric Lighting (HCL). In Frankfurt this year, during Light+Building, it was the buzzword, with nearly every second manufacturer’s stand claiming they had figured out the special formula necessary to create perfect HCL illumination....
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The difficult heritage. The reuse of former prison buildings
PublikacjaIn recent years, there has been a trend to reuse abandoned buildings. Adaptive re-use allows preservation of the original structure and implements a new function to it. Such activity could help to preserve the historic value of buildings; moreover, many other advantages can be found in educational, ecological and economic fields. However, the question arises of whether every object can be freely adapted. This article examines the...
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Maritime heritage of small port towns of the Polish coast
PublikacjaThe article describes problems of the gradual disappearance of real maritime heritage in small Polish port cities. The maritime heritage of small port cities was shaped by coastal processes and urban historical conditions what has led to creation of specific types of landscapes. Special architectural objects of the post-port heritage of small ports of the Polish coast are hydrotechnical constructions (i.e. breakwaters, quays),...
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Cybersecurity and Privacy in Standards for Smart Grids – a Comprehensive Survey
PublikacjaResilient information and communications technologies are a prerequisite for reliable operation of smart grid. In recent years, many standards for the new form of electricity network have been proposed, which results in operators and other smart grid stakeholders having difficulties in finding the documents which can be related to their particular problems. The purpose of this paper is to bring in all smart grid standards that...
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A measurement system for children endurance tests
PublikacjaThere are a lot of ethical problems concerning the use of invasive methods for the measurement of a child's body response to physical exercise and physical training. The alternative is are non-invasive methods like ergospirometry or NIRS. The article presents a measurement system dedicated for children endurance tests, composed of a few non-invasive measurement modules, including a temperature measurement module. Temperature is...
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Adhesion of organic coatings to hot-dip galvanized steel
PublikacjaDuplex systems provide long-time corrosion protection, much longer than the sum of the lifetimes of zinc and paint used individually. However loss of adhesion between coating and zinc substrate is often found in practice. Different methods of zinc surface preparations are used in the fi eld. The aim of this study was to examine and compare coating protection when the old zinc surface, stored during long-time period (15 years) in...
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Sensors integration in the smart home environment - a proposal to solve the problem with user identification
PublikacjaIn this preliminary study we, investigate the possibility of user recognition techniques suitable on smart home devices like chairs, beds, aiming for low–power, high accuracy and quick response time. We propose the two well know technique: voice speaker recognition and accelerometer signal from device mounted on the chair, and the third one optical system basing on IR LED transmitter/receiver circuit. The preliminary results proved...
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L'economia mondiale dopo la guerra fredda
PublikacjaChe cosa è successo negli equilibri economici mondiali a partire dal 1989 e dalla dissoluzione del vecchio ordine sovietico? Dopo aver esaminato gli Usa e i suoi competitori asiatici, Giappone e Cina, il libro si concentra sull’Europa e sulle grandi trasformazioni portate dalla riunificazione tedesca, da Maastricht e dalla nascita dell’euro. Infine analizza, nell’ambito della globalizzazione, il ruolo dei BRICS, lo sviluppo economico...
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Detekcja osoby w wannie
PublikacjaStarzenie się społeczeństwa powoduje narastanie problemów chorób wieku starczego. Częstym problemem są zasłabnięcia w wannie podczas kąpieli. Celem publikacji jest przedstawienie metody identyfikacji tkanki ożywionej w wodzie z wykorzystaniem technik elektromagnetycznych. Obserwując zmiany amplitudy i częstotliwości pracy generatorów, pracujących w pętli sprzężenia zwrotnego z cewką, istnieje możliwość scharakteryzowania i określenia...
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Mitochondrial DNA copy number and trimethylamine levels in the blood: New insights on cardiovascular disease biomarkers
PublikacjaAmong cardiovascular disease (CVD) biomarkers, the mitochondrial DNA copy number (mtDNAcn) is a promising candidate. A growing attention has been also dedicated to trimethylamine-N-oxide (TMAO), an oxidative derivative of the gut metabolite trimethylamine (TMA). With the aim to identify biomarkers predictive of CVD, we investigated TMA, TMAO, and mtDNAcn in a population of 389 coronary artery disease...
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Ocena kosztu cyklu życia szyn kolejowych w modernizacji układów geometrycznych
PublikacjaW pracy przedstawiono uwarunkowania historyczne, które doprowadziły do opracowania metod szacowania kosztu życia inwestycji. Opisano podstawowe założenia LCC według modelu przedstawionego w Normach oraz opracowanego w projekcie INNOTRACK. Zaproponowano połączenie powyższych metod i dostosowanie ich do oceny kosztu życia szyn kolejowych w Polce. Przedstawiono elementy wpływające na koszt utrzymania nawierzchni szynowej oraz metody...
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Gdańsk oczami Irlandzkich i Polskich Artystów Plastyków. Krenz J.: Cykl 7 akwarel i pasteli. Zimowy Gdańsk
PublikacjaMiędzynarodowa wystawa zbiorowa, poplenerowa: Gdańsk oczami Irlandzkich i Polskich Artystów Plastyków. Galeria Sztuki Domu Aktora w Gdańsku. Przez kilka grudniowych dni artyści plastycy z Irlandii i Polski malowali zimowy Gdańsk. Stronę irlandzką reprezentowali: Jonathan Brennan, Katherine St.Angelo, Esther O’Kelly, Joanna Mules, Marcus Patton. Polscy uczestnicy: Magdalena Nowacka-Kolano, Anna Schumacher, Krzysztof Ludwin i Komisarz...
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Ocena odporności na pękanie podbudów drogowych z mieszanek mineralno-cementowo-emulsyjnych (MCE)
PublikacjaPodbudowy z mieszanek mineralno-cementowo-emulsyjnych (MCE) są jednym z wielu materiałów stosowanych do wykonywania warstw nawierzchni w ramach przebudów dróg w Polsce. Mieszanki MCE pozwalają na maksymalne powtórne wykorzystanie istniejących warstw konstrukcyjnych do budowy lub przebudowy nawierzchni. Do wykonania podbudów z MCE stosuje się materiał pochodzący z rozbiórki istniejących warstw (destrukt) bitumicznych, warstw związanych...
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Kinetics of cross-linking processes of fast-curing polyurethane system
PublikacjaThis work focuses on the application of thermal analysis and kinetics investigations to analyze chemical processes during cross-linking of the complex fast-curing polyurethane system. Non-isothermal Differential Scanning Calorimetry (DSC) measurements were performed for both stoichiometric mixtures of polyol and isocyanate component and for mixture with large isocyanate excess. Isoconversional methods were used to calculate initial...
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Analiza nośności zabytkowych fundamentów w kontekście jakości użytych zapraw Analysis of the Load-Bearing Capacity of Historical Foundations in the Context of the Quality of Mortar Used
PublikacjaStructures of historical buildings usually have the form of masonry elements. The weakest component of such elements is mortar, especially in stone foundations, which were often used in the with a focus on the modeling of mortar as a joint connecting stones in a characteristic medieval foundation. Different types of mortar: cement, cement-lime, lime and gypsum mortars, were examined. A numerical analysis was carried out on the...
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Communication Networks in the Service of the Environmental Monitoring
PublikacjaIn the paper selected issues relating to communication networks in the services of the environmental monitoring (EM) have been described. It is divided into three main parts: introduction, wire and wireless networks. At the beginning of the basic definitions were explained. The wire part focuses on a plain old telephone service (POTS), an integrated services digital network (ISDN), a digital subscriber line (DSL) and a fiber-optic...
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Structure and thermoelectric properties of bismuth telluride—Carbon composites
PublikacjaCarbon nanotubes and amorphous carbon have been introduced into a bismuth telluride matrix (0.15 and 0.30 wt.% ratio) to investigate the influence of the carbon on the composite’s thermoelectric properties. Composites with well-dispersed additives have been obtained by sonication and ball-milling methodology. Carbon nanotubes and an amorphous carbon addition led to a decrease in electric conductivity from 1120 S/cm to 77 S/cm....
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Gaze tracking in multi-display environment
PublikacjaThis paper presents the basic ideas of eye and gaze tracking in multiple-display environment. The algorithm for display detection and identification is described as well as the rules for gaze interaction in multi display environment. The core of the method is to use special LED markers and eye and scene tracking glasses. Scene tracking camera registers markers position which is then represented as a cloud of points. Analyzing the...
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Role of adenylate kinase 4 as a new metabolic regulator of pulmonary artery smooth muscle cells under hypoxia
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The importance of individual spray properties in performance improvement of a urea-SCR system employing flash-boiling injection
PublikacjaThe appropriate mixing of a urea–water solution (UWS) with exhaust gases in a selective catalytic reduction system is crucial to efficiently reduce nitrogen oxides and diminish the deposition of liquid wall film. One of the methods to enhance the mixing of the UWS with the exhaust gases is a flash-boiling injection. Its positive effect has been linked with a reduced Sauter mean diameter (SMD) and improved evaporation, but the...
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Rozpoznawanie statycznych i dynamicznych gestów dłoni z zastosowaniem adaptacyjnego czujnika optycznego
PublikacjaBezdotykowe interfejsy urządzeń stacjonarnych oraz urządzeń mobilnych są ważne zwłaszcza w ochronie zdrowia (np. przeciwdziałanie roznoszeniu bakterii i wirusów, wsparcie chirurga w trakcie przeprowadzania operacji itp.). W ramach rozprawy doktorskiej zaprojektowano i wykonano oszczędny energetycznie czujnik gestów o budowie liniowej, złożony z fotodiod i diod LED, wraz z dedykowanym mu...
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Wpływ budowy chemicznej na zmiany właściwości mechanicznych i termomechanicznych elastomerów biopoliuretanowych = The influence of chemical structure on mechanical and thermomechanical properties of cast biopolyurethane elastomers
PublikacjaPrzedmiotem niniejszej pracy są elastomery biopoliuretanowe otrzymywane metodą dwuetapową, tzw. prepolimerową, z wykorzystaniem surowców bio-pochodnych. Zbadano wpływ różnych małocząsteczkowych przedłużaczy łańcucha prepolimerowego: 1,2-biopropanodiolu oraz 1,3-biopropanodiolu na strukturę chemiczną i właściwości mechaniczne (warunki statyczne i dynamiczne) elastomerów biopoliuretanowych. Ponadto, wykorzystano również inny surowiec...
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Own or public? Later livelihoods of Ukrainian war migrant households in Poland
PublikacjaThis paper presents empirical research on the livelihood resources of Ukrainian households that fled to Poland due to the Russian invasion and reside there long term. Using a nationwide sample of these households and an accurate econometric framework, we investigate the factors influencing the role of income from work, other private resources and public assistance in covering their living costs in exile. Our findings confirm the...
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Wpływ zmiennych procesu kapsułkowania współosiowego na stabilność oksydacyjną oleju rzepakowego
PublikacjaPraca stanowi kontynuację badań nad stabilnością olejów jadalnych kapsułkowanych metodą współosiową, w strukturze naturalnych polimerów. W badaniach określono wpływ wybranych czynników procesu kapsułkowania na stabilność modelowego oleju rzepakowego na podstawie oznaczeń zawartości pierwotnych i wtórnych produktów utlenienia. Uzyskane wyniki dowodzą, że najmniejsze zmiany oksydacyjne zachodzą podczas kapsułkowania oleju za pomocą...
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Modyfikacja połączenia dźwigara ze słupem w konstrukcji stalowej Terminalu T2 Portu Lotniczego w Gdańsku
PublikacjaW2015 r. ukończono rozbudowę Terminalu T2 Portu Lotniczego im. Lecha Wałęsy wGdańsku. Politechnika Gdańska pełniła nadzór naukowy nad rozbudową obiektu. Wykonano wiele analiz, których celem była weryfikacja pracy konstrukcji w fazach montażu oraz w stanie docelowym. Wnioski z przeprowadzonych badań doprowadziły do modyfikacji oparcia dźwigarów dachowych na stalowych słupach nośnych, z uwagi na stwierdzone lokalne przekroczenia...
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Architektura przyjazna seniorom w Polsce XXI wieku. Kształtowanie przestrzeni zamieszkania, pracy i rozrywki
PublikacjaPolska, podobnie jak wiele innych krajów, zmaga się obecnie z procesem starzenia społeczeństwa, który w najbliższych latach będzie przybierał na sile. Dlatego bardzo istotne jest, aby już teraz rozpocząć proces przystosowywania miast do zmieniającej się struktury społecznej, tak aby w przyszłości mogły być one miejscem, w którym ludzie starsi będą mogli swobodnie i bezpiecznie mieszkać oraz funkcjonować. W realiach polskich można...
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Effect of microwave and convection heating on selected nutrients of human milk
PublikacjaThe aim of this study was to determine the influence of the microwave heating method (MWH) on selected determinants of the nutritional value of human milk (HM) and compare to the effect exerted by the standard convection heating (CH) method, including holder pasteurization (HoP). It was showed that using MWH under conditions assumed to ensure microbiological safety, changes in the level of the nutrients were not observed. In these...
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In Situ Verification of Numerical Model of Water Hammer in Slurries
PublikacjaThis paper presents a numerical model of transient flow in a pressure slurry pipeline network with verification based on in situ measurements. The model, primarily verified in laboratory conditions, has been extended and applied to the case of a large and complex slurry pipeline network in Poland. In the model, the equivalent density concept was applied. In situ experiments were performed for various unsteady flow episodes, caused by...
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Developments in Green Chromatography
PublikacjaGreen analytical chemistry is a widely recognized concept that has led to the development of new analytical methods with reduced environmental impact and minimized analyst occupational exposure. Achievements include the development of microextraction, ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE) techniques. Research towards greener separation processes focuses on the elimination of toxic solvents...
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A walk Around Gdańsk for Physicists
PublikacjaI provide a guide to Gdańsk (Danzig) and some of its suburbs, focusing on sites of particular interest to physicists. These include the Town Hall with the old Gdańsk standards of length at its entrance, the solar dial of 1588 on its corner, and its bell tower; the Naturalists Society; the medieval harbor crane; the medieval astronomical clock in St. Mary's Church; the late nineteenth-century lighthouse and time ball; and sites...
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Credit default swaps and banks
PublikacjaThis chapter aims to explore the evolving role of credit default swaps (CDS) in managing and transferring default risk from the perspective of banks from a holistic perspective. This chapter examines credit default swaps (CDSs) as derivative financial instruments that transfer credit risk on debt securities. While CDSs offer benefits such as risk management and risk trading, they also introduce potential systemic risks, as evidenced...
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The difficulties in polybrominated diphenyl ethers identification by GC-EI-MS technique
PublikacjaAwareness about the harmful effects of brominated flame retardants on living organisms increases mainly due to link their presence in the human environment with health disorders. Therefore is a need to conduct research aimed at content control of these chemicals in the environment. Recent improvements in injection techniques and mass spectrometer ionization methods have led to a variety of options to determine PBDEs in environmental...