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Homoclinics for singular strong force Lagrangian systems in R^N
PublikacjaWe will be concerned with the existence of homoclinics for second order Hamiltonian systems in R^N (N>2) given by Hamiltonians of the form H(t,q,p)=Φ(p)+V(t,q), where Φ is a G-function in the sense of Trudinger, V is C^2-smooth, periodic in the time variable, has a single well of infinite depth at a point ξ and a unique strict global maximum 0 at the origin. Under a strong force type condition aroud the singular point ξ, we prove...
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FORECASTING EXCHANGE RATES IN THE PROCESS OF THE ASSESSMENT OF CONSUMER RISK BANKRUPTCY IN CENTRAL EUROPE
PublikacjaThis paper focuses on the issue of forecasting the fluctuation of exchange rates as part of the early warning system against the risk of consumer bankruptcy. The author identified the main macroeconomic factors affecting the level of bankruptcies for households in Poland. The fluctuation of exchange rates, which directly affects the deterioration of the economic situation of borrowers who have opened credit accounts in a foreign...
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Measurements of the Hydraulic Fluids Compressibility
PublikacjaPerformance of the hydrostatic high-pressure drive systems is affected by the changes of working fluid’s volume. Presence of air bubbles in the fluid cause this problem to be even more serious. To study this phenomenon precise measurements of fluid’s bulk modulus are necessary. Differ-ent measurement methods are applied, but they are either limited to low pressure range or give inaccurate results. To solve the problem the new...
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Highly sensitive large strain cellulose/multiwalled carbon nanotubes (MWCNTs)/thermoplastic polyurethane (TPU) nanocomposite foams: From design to performance evaluation
PublikacjaAerogel-based polymer composite foams are promising for large strain piezoresistive sensors, but their aerogel skeleton is partially destroyed during the foaming process, limiting their sensitivity. Herein, the thermoplastic polyurethane was synthesized on the aerogel skeleton to obtain cellulose/multiwalled carbon nanotubes (MWCNTs)/thermoplastic polyurethane (TPU) nanocomposite materials foamed with the aid of supercritical carbon...
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Ship’s de-perming process using coils lying on seabed
PublikacjaA ship built from ferromagnetic steel disturbs the uniformity of the Earth’s magnetic field. Changes of ship’s signature are due to the magneto-mechanical interaction of the hull with the Earth’s magnetic field. The ship’s magnetic field can be detected by a magnetic naval mine. For this reason, the vessel has to be demagnetized. There are several methods of ship’s de-perming. The results of experimental and computer simulations...
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Integration of Fluorescent, NV-Rich Nanodiamond Particles with AFM Cantilevers by Focused Ion Beam for Hybrid Optical and Micromechanical Devices
PublikacjaIn this paper, a novel fabrication technology of atomic force microscopy (AFM) probes integrating cantilever tips with an NV-rich diamond particle is presented. Nanomanipulation techniques combined with the focused electron beam-induced deposition (FEBID) procedure were applied to position the NV-rich diamond particle on an AFM cantilever tip. Ultrasonic treatment of nanodiamond suspension was applied to reduce the size of diamond...
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Elgold: gold standard, multi-genre dataset for named entity recognition and linking
Dane BadawczeThe dataset contains 276 multi-genre texts with marked named entities, which are linked to corresponding Wikipedia articles if available. Each entity was manually verified by at least three people, which makes the dataset a high-quality gold standard for the evaluation of named entity recognition and linking algorithms.
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Elgold intermediate: verified by the authors
Dane BadawczeThe dataset contains the texts from Elgold intermediate: verified by verification team additionaly verified by the dataset authors but before the final validation step with the elgold toolset.
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Elgold intermediate: verified by verification team
Dane BadawczeThe dataset contains the texts from Elgold intermediate: annotated raw additionaly verified by the five-person verification team. arly 25% of the mentions were corrected in some aspect.
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Microscopic examination of the texture of paper products
Dane BadawczeAtomic force microscopy (AFM) can be used to study the state of the paper fibers with the aim of providing qualitative and semi-quantitative information on degradation and aging. The work [1] reports the results of tests of various paper products subjected to deliberate aging processes under the influence of various factors. Chemical and biological...
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Elgold intermediate: annotated raw
Dane BadawczeThe dataset contains a subset of texts from Elgold intermediate: raw texts with named entities marked and linked to corresponding Wikipedia articles. The texts were annotated by 31 participants during the 1.5-hour session.
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Die Sandgrube „Köplitz“ – ein interessanter geologischer Aufschluss am Nordwestrand der Schmiedeberger Stauchendmoräne
PublikacjaDie Kiessandgrube Köplitz ermöglicht einen Einblick in die komplizierten, durch glazidynamische Überprägung gekennzeichneten geologischen Lagerungsverhältnisse im Bereich der Schmiedeberger Stauchendmoräne. Anhand neuer Geländedokumentationen wird ein kleiner Eindruck vom komplizierten injektiven „Fließfalten-Schuppenbau“ der Stauchendmoräne vermittelt. Die steil aufgerichteten, aus tertiären (Untermiozän bis Oligozän) und quartären...
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The profiles and spectrum of aqua solution of tannic acid by HPLC-DAD-MS analysis.
Dane BadawczeThe profiling of tannic acid is determined by examining the content and proportion / ratio of gallotannins [Aras et al. 2016, Clifford et al. 2007, Gauri et al. 2012, Nishizawa et al. 1982]. In order to check the ion mass distribution (TIC) in an aqueous solution of commercial tannic acid, a direct sample injection (TA) was performed into the mass spectrometer....
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Tax preferences in PIT in numbers 2009-2015
Dane BadawczeThe follwoing data contain information prepared by the Ministry of Finance on the value of tax preferences by areas of support in Personal Income TAX (PIT) between 2009-2015.
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Podstawy geografii ekonomicznej_sem1
Kursy OnlineKurs z Podstaw Geografii Ekonomicznej semestr I Gospodarka Przestrzenna 30 godzin wykładu i 30 godzin ćwiczeńZajęcia odbywają się w czasie rzeczywistym tj. w poniedziałki w godzinach 8:15-11:45 na platformie MsTeams. By wejść na zajęcią proszę kliknąć poniższe hiperłącze lub wkleić w pasku przeglądarki poniższy link.Dołącz do spotkania w aplikacji Microsoft Teamshttps://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmeetup-join%2F19%3Ameeting_ZjYxMzZmM2ItZGU5MC00NTBlLWEyMjAtNDdlYTY0MTdkODdj%40thread.v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%2522b2b950ec-1ee3-4d9d-ac5e-4dd9db5e0b73%2522%252c%2522Oid%2522%253a%252233f97504-8676-4b87-96ad-a9394d16b3b2%2522%257d%26anon%3Dtrue&type=meetup-join&deeplinkId=f928959f-2c14-4cb9-917f-7a62a5343d9b&directDl=true&msLaunch=true&enableMobilePage=true&suppressPrompt=trueKonsultacje...
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Szymon Andrzejewski dr
OsobyUkończył Uniwersytet Gdański na kierunku Politologia, specjalizacja ustrojowo-samorządowa w 2008 roku. Ukończył studia podyplomowe na Politechnice Gdańskiej pod nazwą "Zarządzanie i ewaluacja projektów finansowanych z funduszy Unii Europejskiej" w 2010r. i na Akademii Górniczo-Hutniczej pod nazwą "Ochrona Środowiska przed hałasem i drganiami" w 2012 roku. Student Socjologicznych Studiów Doktoranckich na Uniwersytecie Gdańskim od...
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Sawsan S. Sayed Prof. Dr.
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Techniki sprzętowej teselacji do wygładzania i uszczegóławiania modeli trójwymiarowych
PublikacjaDirectX 11 oraz OpenGL 4 wprowadziły do potoku renderującego bardzo oczekiwaną teselację. Wraz z upływem czasu coraz więcej silników graficznych zostaje dostosowywanych do wspierania tej technologii. W artykule przedstawiona została koncepcja teselacji od strony teoretycznej oraz praktycznej. Opisany został nowy potok renderujący, a w szczególności dedykowane teselacji programy cieniujące (ang. shaders). Główną część artykułu stanowi...
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DS-CDMA receiver in Software Defined Radio technology. Admission to the implementation of a RAKE receiver
PublikacjaProgrammable radio is one of the latest trends in the construction of multi-standard receivers. The technology, called Software Defined Radio (SDR), is also an ideal test platform that allows to try out different algorithms of signal receiving. This particular feature led to choose this platform to implement a DS-CDMA receiver (Direct Sequence Code Division Multiple Access). The use of SDR allows for a gradual upgrade of data processing...
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Układ bezpośredniej syntezy częstotliwości DDFS o obniżonym poborze mocy
PublikacjaW artykule zaprezentowano koncepcje układu bezpośredniej syntezy częstotliwości DDFS (ang. Direct Digital Frequency Synthesizer) opartego o aproksymację wielomianową. Układ zamiany fazy na sinus wykorzystuje jedynie analogowe funktory, tj. mnożniki oraz wzmacniacze operacyjne. Skutkuje to znaczącym obniżeniem poboru mocy oraz zmniejszeniem powierzchni układu w stosunku do rozwiązań wykorzystujących jedynie komponenty cyfrowe. Zastosowanie...
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Vehicle classification based on soft computing algorithms
PublikacjaExperiments and results regarding vehicle type classification are presented. Three classes of vehicles are recognized: sedans, vans and trucks. The system uses a non-calibrated traffic camera, therefore no direct vehicle dimensions are used. Various vehicle descriptors are tested, including those based on vehicle mask only and those based on vehicle images. The latter ones employ Speeded Up Robust Features (SURF) and gradient images...
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Snow Cover Studies: a Review on the Intensity of Human Pressure
PublikacjaSnow cover should be treated as a highly dynamic medium. A variety of physical and chemical processes interact to alter its chemical composition and affect the metamorphism of its individual crystals and layers; this, in turn, has a direct influence on their mutual adhesion, and ultimately on the stability of the entire snow cover. The literature data here reported provide basic information on the forms of solid precipitation,...
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Implementation of the Boundary Element Method to Two-Dimensional Heat Transfer with Thermal Bridge Effects
PublikacjaThe work presents an application of the boundary element method applied to a two-dimensional conductive heat transfer. The algorithm of the method is explained and its advantages are outlined. Green's function as a fundamental solution for Poisson's equation in two dimensions was used and the direct approach was applied. The presented results concern building construction elements as typical cases of thermal bridges. Some properties...
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Measurement methods for assessing insulation condition of underground pipelines
PublikacjaThe paper discusses the most frequently applied measurement methods for assessing the quality of external insulation along pipelines and detecting defect locations in the protective coating. The quality of coating along a given pipeline section under investigation is assessed by determining unitary resistance of the coating, which is calculated on the basis of measurement results obtained along a pipeline subjected to cathodic...
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Kreowanie nowej ścieżki rozwoju dzięki poprawie modelu procesów innowacji na Pomorzu
PublikacjaCreating of New Development Path Due to Upgrading the Innovation Process- es Model in Pomeranian Region. The study presents a change in the innovation model and a change of development path towards new industries and modernization of traditional indus- tries in the Pomeranian Voivodship. The characteristics of the region and the characteristics of the regional innovation system based on statistical data, existing research, analysis...
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Nonlinear resultant theory of shells accounting for thermodiffusion
PublikacjaThe complete nonlinear resultant 2D model of shell thermodiffusion is developed. All 2D balance laws and the entropy imbalance are formulated by direct through-the-thickness integration of respective 3D laws of continuum thermodiffusion. This leads to a more rich thermodynamic structure of our 2D model with several additional 2D fields not present in the 3D parent model. Constitutive equations of elastic thermodiffusive shells...
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Deep Learning-Based LOS and NLOS Identification in Wireless Body Area Networks
PublikacjaIn this article, the usage of deep learning (DL) in ultra-wideband (UWB) Wireless Body Area Networks (WBANs) is presented. The developed approach, using channel impulse response, allows higher efficiency in identifying the direct visibility conditions between nodes in off-body communication with comparison to the methods described in the literature. The effectiveness of the proposed deep feedforward neural network was checked on...
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Piotr Dominiak prof. dr hab.
OsobyUrodził się w Radomiu 29 czerwca 1948 r. Jest absolwentem studiów ekonomicznych na Uniwersytecie Warszawskim (1971), tam też obronił doktorat (1976) i uzyskał habilitację (1989). Tytuł naukowy profesora uzyskał w 2005 r. Na PG pracuje od 1971 r. W latach 1991–1993 dyrektor Instytutu Nauk Ekonomicznych i Humanistycznych PG. Dziekan Wydziału Zarządzania i Ekonomii w latach 1993–1999 i 2005–2012. Kierownik Katedry Nauk Ekonomicznych...
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"How to Write a Scientific Manuscript"
Kursy Online{mlang pl} Zajęcia nieobowiązkowe, poza programem kształcenia. Prowadzący: Dr. Mohammad Reza Saeb W przypadku pytań, prosimy o kontakt z Samorządem Doktorantów, który jest organizotrem kusru (najlepiej bezpośrednio z p. Adamem Olszewskim). {mlang} {mlang en} Optional courses, not included in the training programme. Academic teacher: Dr. Mohammad Reza Saeb If you have any questions, please contact the PhD Student Union, which...
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Atimicrobial Resistance of Enterococcus spp. in Muncipal wasterwater Treatment Plant - Model Study
PublikacjaIn this study the removal of resistant Enterococcus spp. was evaluated using the laboratory-scale wastewater treatment model plant (M-WWTP), designed as a multiphase (anaerobic, anoxic and aerobic) system (Q = 27 dm3 per day) and continuously supplied with the wastewater obtained from the full-scale WWTP, after grid. The activated sludge from the secondary clarifier was recirculated to the anaerobic chamber (with the ratio equal...
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Glucosinolates from lepidium peruvianum as potential antiamnestic drugs
PublikacjaLepidium peruvianum (maca) (Brassicaceae) is a naturally occurring plant mainly in the high Andes of Peru. In recent years, it has been intensively researched in terms of its influence on various diseases and towards health improvement. Alzheimer’s disease is an incurable disease that most often affects adults over the age of 60. As since 2003 the US Food and Drug Administration (FDA) did not approve any new drug for Alzheimer’s...
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Ripple oscillations in the left temporal neocortex are associated with impaired verbal episodic memory encoding
PublikacjaBACKGROUND: We sought to determine if ripple oscillations (80-120 Hz), detected in intracranial electroencephalogram (iEEG) recordings of patients with epilepsy, correlate with an enhancement or disruption of verbal episodic memory encoding. METHODS: We defined ripple and spike events in depth iEEG recordings during list learning in 107 patients with focal epilepsy. We used logistic regression models (LRMs) to investigate the...
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UUV and AUV Vehicles as the autonomous systems for naval applications
PublikacjaThere is a growing pressure to investigate how to design and build the unmanned underwater vehicles of different types which are devoted towards performing many tasks under the water surface according to the data missions. During the recent years the Department of Ship Design and Subsea Robotics, Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology designed and built a few types of unmanned underwater...
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Antenna Optimization Using Machine Learning with Reduced-Dimensionality Surrogates
PublikacjaIn modern times, antenna design has become more demanding than ever. The escalating requirements for performance and functionality drive the development of intricately structured antennas, where parameters must be meticulously adjusted to achieve peak performance. Often, global adjustments to geometry are necessary for optimal results. However, direct manipulation of antenna responses evaluated with full-wave electromagnetic (EM)...
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Net-zero carbon condition in wastewater treatment plants: A systematic review of mitigation strategies and challenges
PublikacjaThe wastewater sector accounts for up to 7 and 10% of anthropogenic CH4 and N2O emissions, respectively. Nowadays wastewater treatment plants are going through a paradigm shift to approach a net-zero carbon condition. Numerous ongoing measures have taken place to identify the sources of greenhouse gases and minimize the carbon footprint. This paper systematically reviews all known practices leading towards net-zero carbon wastewater...
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The role of glucuronidation in drug resistance
PublikacjaThe final therapeutic effect of a drug candidate, which is directed to a specific molecular target strongly depends on its absorption, distribution, metabolism and excretion (ADME). The disruption of at least one element of ADME may result in serious drug resistance. In this work we described the role of one element of this resistance: phase II metabolism with UDP-glucuronosyltransferases (UGTs). UGT function is the transformation...
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Stable and degradable microgels linked with cystine for storing and environmentally triggered release of drugs
PublikacjaEnvironmentally sensitive, degradable microgels based on poly(N-isopropylacrylamide) (pNIPA) crosslinked with the diacryloyl derivative of cystine (BISS) were synthesized by applying surfactant-free emulsion polymerization. pNIPA contributed the sensitivity to temperature to the microgels and the cross-linker made them degradable and sensitive to pH. The morphology of the microgels was investigated by using scanning and transmission...
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Svalbard reindeer as an indicator of ecosystem changes in the Arctic terrestrial ecosystem
PublikacjaOver the years, noticeable effort has been directed towards contaminant determination in multiple biotic samples collected from the inhabitants of the Arctic. Little consideration has been given to polar herbivores, however, especially those from the European parts of the Arctic. To provide a broader perspective, we aimed to decipher trace element concentration in hairs of the key species in the Arctic, namely the Svalbard reindeer...
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Center for Scientific and Technical Information - Library Services for Business and Science at Wroclaw University of Technology
PublikacjaWroclaw University of Technology is situated in Lower Silesia – the dynamically developing region of Poland. Focusing on adopting its own offer to the market needs had been selected as a strategy. Due to that, a synergy effect has been achieved with the development of segments strategic for the region. The University is strongly oriented to cooperation with the economy and industry. One of the key initiatives was establishment...
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Immunoanalityka – użyteczne podejście analityczne w badaniach środowiska
PublikacjaWażnym krokiem w rozwoju bezpośrednich metodyk analitycznych było opracowanie technik immunoanalitycznych. Początkowo znalazły one zastosowanie praktyczne w analityce medycznej a później także w analityce środowiskowej. Dzięki temu możliwe jest ilościowe oznaczenie stosunkowo szerokiego spektrum ksenobiotyków w próbkach charakteryzujących się złożonym składem matrycy bez praco- i czasochłonnego etapu przygotowania tych próbek do...
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Techniki sprzętowej teselacji do wygładzania i uszczegóławiania modeli trójwymiarowych
PublikacjaDirectX 11 oraz OpenGL 4 wprowadziły do potoku renderującego bardzo oczekiwaną teselację. Wraz z upływem czasu coraz więcej silników graficznych zostaje dostosowywanych do wspierania tej technologii, więc nie można pozostawać wobec niej obojętnym. W artykule przedstawiona zostanie koncepcja teselacji od strony teoretycznej oraz praktycznej. Opisany zostanie nowy potok renderujący, a w szczególności dedykowane teselacji programy...
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Enhanced Electrochemical Performance of MnCo1.5Fe0.5O4Spinel for Oxygen Evolution Reaction through Heat Treatment
PublikacjaMnCo1.5Fe0.5O4 spinel oxide was synthesized using the sol−gel technique, followed by heat treatment at various temperatures (400, 600, 800, and 1000 °C). The prepared materials were examined as anode electrocatalysts for watersplitting systems in alkaline environments. Solid-state characterization methods, such as powder X-ray diffraction and X-ray absorption spectroscopy (XAS), were used to analyze the materials’ crystallographic...
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Flood Routing by the Non-Linear Muskingum Model: Conservation of Mass and Momentum
PublikacjaIn this paper, the conservative properties of the Muskingum equation, commonly applied to solve river flood routing, are analysed. The aim of this analysis is to explain the causes ofthe mass balance error, which is observed in the numerical solutions of its non-linear form. The linear Muskingum model has been considered as a semi-discrete form of the kinematic wave equation and therefore it was possible to derive its two non-linear...
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Controlling computer by lip gestures employing neural network
PublikacjaResults of experiments regarding lip gesture recognition with an artificial neural network are discussed. The neural network module forms the core element of a multimodal human-computer interface called LipMouse. This solution allows a user to work on a computer using lip movements and gestures. A user face is detected in a video stream from a standard web camera using a cascade of boosted classifiers working with Haar-like features....
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Evaluation of losses in a hydraulic motor based on the SWSB - 63 motor tests
PublikacjaIn this paper are compared two models of energy losses: that suggested by Prof. Paszota,Z. in monograph "Energy losses in the hydraulic displacement motors - definitions and relations serving the evaluation of the efficiency of hydrostatic drive" [18] and that ofProf. Balawender, A. in "Energy analysis and methodology of testing of low-speed hydraulic motors" [1]. By using the data obtained from the tests of SWSB-63 hydraulic motors...
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Metodyka projektowania sprzęgacza łatowego z perforowaną metalizacją masy w oparciu o algorytm genetyczny
PublikacjaW referacie zaprezentowano metodologię projektowania zminiaturyzowanego sprzęgacza łatowego z perforacją metalizacji masy w postaci komórek DGS (ang. Defected Ground Structures). Proces projektowania oparto na zmodyfikowanym algorytmie genetycznym wykorzystującym środowisko Sonnet do pełnofalowych symulacji elektromagnetycznych przeprowadzanych w celu znalezienia quasi-optymalnej topografii obwodu. Zastosowanie omówionej procedury...
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Abuse or contamination? Ratio determination of clenbuterol enantiomers to distinguish between doping use and meat contamination
PublikacjaClenbuterol has been detected in urine of several athletes during routine doping control in the past years. Athletes claimed that the clenbuterol was ingested by eating contaminated meat. Providing analytical prove for this claim is difficult. clenbuterol consists of two enantiomers, R(-) and S(+)-clenbuterol. Currently available human and veterinary preparations were found to consist of a racemic mixture of both enantiomers. When...
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Accurate modeling of quasi-resonant inverter fed IM drive
PublikacjaIn this paper wide-band modeling methodology of a parallel quasi-resonant dc link inverter (PQRDCLI) fed induction machine (IM) is presented. The modeling objective is early-design stage prediction of conductive electromagnetic interference (EMI) emissions of the considered converter fed IM drive system. Operation principles of the selected topology of PQRDCLI feeding IM drive are given. Modeling of the converter drive system is...
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Detection of vehicles stopping in restricted zones in video from surveillance cameras
PublikacjaAn algorithm for detection of vehicles that stop in restricted areas, e.g. excluded by traffic rules, is proposed. Classic approaches based on object tracking are inefficient in high traffic scenes because of tracking errors caused by frequent object merging and splitting. The proposed algorithm uses the background subtraction results for detection of moving objects, then pixels belonging to moving objects are tested for stability....
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Air quality policy in the U.S. and the EU – a review
PublikacjaThe high level of atmospheric pollution is a global problem that has taken on particular significance in recent years and will continue to grow in the near future. Air pollution directly affects the health, living organisms, vegetation, water, soil and buildings. Additionally, it moves easily even over long distances. Certain air pollutants influence the climate, cause negative processes in the protective ozone layer and contribute...