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Selected problems of heat and mass transfer
e-Learning Courses -
OZNACZANIE POZOSTAŁOŚCI PESTYCYDÓW W ORGANIZMACH PSZCZELICH ORAZ W MIODZIE Z WYKORZYSTANIEM PROCEDURY OPARTEJ NA ZASTOSOWANIU CHROMATOGRAFÓW SPRZĘŻONYCH Z TANDEMOWYMI SPEKTROMETRAMI MAS (GC-MS/MS i LC-MS/MS)
PublicationPestycydy to bardzo liczna grupa różnorodnych związków chemicznych stosowa-nych w rolnictwie. Ze względu na swoją trwałość gromadzą się w różnych elementach środowiska i mogą występować w obszarze, na którym nigdy nie zostały użyte. Zachodzi także proces ich bioakumulacji w tkankach oraz narządach zwierząt i roślin. Stosowane w rolnictwie środki ochrony roślin (szczególnie w okresie wzmożonych zabiegów agro-technicznych wiosną...
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The AFM micrographs of austenitic stainless steel subjected to sensitization for intergranular corrosion
Open Research DataThe dataset contains atomic force microscopy (AFM) maps of topographic images of austenitic steel samples subjected to sensitization to the process of intergranular corrosion. Precipitations of carbides as well as other intermetallic phases can be observed and detected before the fragments of structures sensitized by improper thermal treatment are exposed...
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Visual Features for Improving Endoscopic Bleeding Detection Using Convolutional Neural Networks
PublicationThe presented paper investigates the problem of endoscopic bleeding detection in endoscopic videos in the form of a binary image classification task. A set of definitions of high-level visual features of endoscopic bleeding is introduced, which incorporates domain knowledge from the field. The high-level features are coupled with respective feature descriptors, enabling automatic capture of the features using image processing methods....
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Jan Amos Jelinek dr hab., prof. APS
PeopleJan Amos Jelinek, Ph.D., Professor at the Academy of Special Education (Warsaw, Poland), teacher and university lecturer. He researches children's cognitive development and the effectiveness of organised educational situations in the field of technical education (familiarising children with the operation of equipment), science and mathematics education. It carries out research on the identification and tracking of technically gifted...
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Lobular carcinoma in situ, NOS - Female, 80 - Tissue image [8160730027009021]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Control System Design for Dynamic Positioning using Vectorial Backstepping
PublicationThe problem of synthesis a dynamic positioning system for low frequency model of surface vessel was considered in this paper. The recursive vectorial backstepping control design was used to keep a fixed position and heading in presence of wave disturbances. The passive observer was introduced to smooth the measurements and to estimate the velocities needed for the control algorithm. The computer simulation results were given to...
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Arch./Urban Project II
e-Learning CoursesA design studio focused on issues related to the creation of sustainable and climate-responsible facilities. The design task is related to the concept of development of the Gdańsk University of Technology campus. The implemented project will be both a task related to urban and architectural design. A very important element of the design process will be a smooth transition between various scales and problems that architects and...
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Accurate rolling resistance Rolling resistance measurements can be influenced by a number of factors
PublicationTire rolling resistance is one of the most difficult-to-measure parameters of the tire/ pavement interface, especially if road measurements are required. First of all, it is necessary to measure a fairly small force in the system that is heavily loaded by other forces and subjected to many adverse effects causing measurement errors. The second problem is related to the fact that tire rolling resistance depends on many factors,...
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Tyre/road noise reduction of poroelastic road surface tested in a laboratory
PublicationA so-called poroelastic road surface (PERS) is being developed in Europe. This contains a large percentage of rubber particles mixed with hard aggregate (stone and sand) and bound with polyurethane. This gives high air void content (around 30 %), high elasticity and smooth texture, all of which should give low noise properties. Inthis experiment anominally 30 mm thick sample of PERS was mounted on a steel drum. Various car tyres...
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Odwzorowanie obiektów ograniczonego środowiska na trójwymiarowej mapie cyfrowej z wykorzystaniem robotów mobilnych zaopatrzonych w stereowizję
PublicationProblem podjęty w rozprawie dotyczy trójwymiarowego odwzorowania otoczenia przez roboty mobilne. Wpisuje się on w zagadnienie SLAM - jednoczesnego określania położenia i tworzenia mapy. W pracy skupiono się na wybranej realizacji mapowania opartej na stereowizji (konkretnego zagadnienia SLAM). Duży nacisk położono także na warunki konieczne do zapewnienia prawidłowej stereowizji oraz na sprzętowy układ eksperymentu, który umożliwia...
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Path components of the space of gradient vector fields on the two dimensional disc
PublicationWe present a short proof that if two gradient maps on the twodimensional disc have the same degree, then they are gradient homotopic.
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Wyznaczanie stref efektywności kanałów dystrybucji na przykładzie wybranego producenta artykułów
PublicationWybór kanału dystrybucji zalicza się do decyzji strategicznych, ponieważ pod uwagę należy wziąć zarówno aspekty ekonomiczne, jak i te, które są związane z obsługą klienta. We współczesnych kanałach dystrybucji, które cechuje duża różnorodność wynikająca ze sposobu przepływu towarów z miejsca ich produkcji do miejsca konsumpcji, istotne znaczenie będzie miał sprawny i szybki przepływ strumieni finansowych, materiałowych i informacyjnych....
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Ductal carcinoma in situ, NOS - Female, 40 - Tissue image [9210729554616761]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Atypical polypoid adenomyoma - Female, 38 - Tissue image [6120730031808401]
Open Research DataThis is the histopathological image of CORPUS UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.
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Lobular carcinoma, NOS - Female, 44 - Tissue image [10100730045427961]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Invasive breast carcinoma of no special type - Male, 33 - Tissue image [1160630015011801]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Effect of elliptical defect orientation on the durability of specimens subjected to cyclic bending
PublicationThis work presents the effect of elliptical defects orientation on the durability of specimens made of C45 steel. Three kinds of specimens with elliptical defects in the form of a one-sided notch oriented at different angles 45, 60, and 90 degrees were subjected to cyclic bending (R=-1). The stress state analysis was performed using local and non-local methods to determine an equivalent amplitude of stress, and then the results...
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CMGNet: Context-aware middle-layer guidance network for salient object detection
PublicationSalient object detection (SOD) is a critical task in computer vision that involves accurately identifying and segmenting visually significant objects in an image. To address the challenges of gridding issues and feature...
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Kartografia cyfrowa - (WILiŚ, GiK, st. II, sem. 2) - rok 2023/2024
e-Learning CoursesStudent poznaje zaawansowane techniki tworzenia wydruku map. Zapoznaje się z tworzeniem i publikowaniem map cyfrowych za pomocą ArcGIS online. Student potrafi skonstruować geoankietę za pomocą portalu 123 Survey.
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Kartografia cyfrowa - (WILiŚ, GiK, st. II, sem. 2) - rok 2022/2023
e-Learning CoursesStudent poznaje zaawansowane techniki tworzenia wydruku map. Zapoznaje się z tworzeniem i publikowaniem map cyfrowych za pomocą ArcGIS online. Student potrafi skonstruować geoankietę za pomocą portalu 123 Survey.
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The influence of solution annealing temperature on the properties of Lean Duplex 2101 welded joints in tubes
PublicationThe article presents a technology of TIG longitudinal welding without filler material (142) of heat exchanger tubes made of Lean Duplex 2101. The results of studies on the effect of heat treatment (solution annealing) on tensile strength, plasticity, delta ferrite and the structure of smooth tubes are shown. It was found, that the change in solution annealing temperature across the tested range has an impact on mechanical properties...
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Dorota Garwolińska dr inż.
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Fibromatosis-like metaplastic carcinoma - Female, 65 - Tissue image [8120730007228551]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Formulation and In Vitro Characterization of Bioactive Mesoporous Silica with Doxorubicin and Metronidazole Intended for Bone Treatment and Regeneration
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Quantification of Compatibility Between Polymeric Excipients and Atenolol Using Principal Component Analysis and Hierarchical Cluster Analysis
PublicationAn important challenge to overcome in the solid dosage forms technology is the selection of the most biopharmaceutically efficient polymeric excipients. The excipients can be selected, among others, by compatibility studies since incompatibilities between ingredients of the drug formulations adversely affect their bioavailability, stability, efficacy, and safety. Therefore, new, fast, and reliable methods for detecting incompatibility...
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[IMe] Selected problems of heat and mass transfer
e-Learning Courses{mlang pl} Dyscyplina: Inżynieria mechaniczna (PG + IMP PAN) Zajęcia obowiązkowe Prowadzący: prof. dr. hab. inż. Dariusz Mikielewicz Liczba godzin: 20 h Forma zajęć: wykład {mlang} {mlang en} Discipline: mechanical engineering (GUT + IFFM PAS) Obligatory course Academic teacher: prof. dr. hab. inż. Dariusz Mikielewicz Total hours of training: 20 teaching hours Course type: lecture {mlang}
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Using water sources extent during inundation as a reliable predictor for vegetation zonation in a natural wetland floodplain
PublicationDistinctive zones of inundation water during floods were shown to originate from different sources in some major floodplains around the world. Recent research showed that the zonation of water in rivers and floodplains is related to vegetation patterns. In spite of this, water source zones were not used for vegetation modeling due to difficulties in their delineation. In this study, we used simulation results of a fully-coupled...
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A spline-based FE approach to modelling of high frequency dynamics of 1-D structures
PublicationIn this paper a computational methodology leading to the development of a new class of FEs, based on the application of continuous and smooth approximation polynomials, being splines, has been presented. Application of the splines as appropriately defined piecewise elemental shape functions led the authors to the formulation of a new approach for FEM, named as spFEM, where contrary to the well-known NURBS approach, the boundaries...
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Resilience and Security in Software Defined Networking
PublicationThis paper gives an overview of the most important issues on resilience and security in Software Defined Networking
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Summer Rural Practice
e-Learning CoursesSummer practice - rural analysis, works with the map, terrain and people.
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Rural Summer Practice - 2024
e-Learning CoursesSummer practice - rural analysis, works on the map, in a terrain and with the people.
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NUMERICAL SIMULATIONS OF GAP FLOW ABOVE ROTATING DISK
PublicationA rotating disk can be considered a basic configuration for the investigati ons of the impact of various conditions on the flow through the clearance between the s hrouded turbine blade and the casing. Numerical calculations using Fine/Turbo Numeca were conducted to examine the influence of the rotational velocity and the pressure differ ence across the disk on the flow conditions, especially the mass flow through the clearance....
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Ship Evolutionary Trajectory Planning Method with Application of Polynomial Interpolation
PublicationPaper presents the application of evolutionary algorithms and polynomial interpolation in ship evolutionary trajectory planning method. Evolutionary algorithms allows to find a coIlision free trajectory in real time, while polynomial interpolation allows to model smooth trajectory which keeps continuity of velocity and acceleration values along path. Combination of this two methods allows to find trajectory, which under some assumptions,...
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Generalized adaptive notch filters with frequency debiasing for tracking of polynomial phase systems
PublicationGeneralized adaptive notch filters are used for identification/tracking of quasi-periodically varying dynamic systems and can be considered an extension, to the system case, of classical adaptive notch filters. For general patterns of frequency variation the generalized adaptive notch filtering algorithms yield biased frequency estimates. We show that when system frequencies change slowly in a smooth way, the estimation bias can...
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Bartłomiej Luks dr
PeopleI'm a snow researcher, working in the Arctic for almost 20 years. I've started as a field assistant on a geological expedition to Bellsund (Spitsbergen), then did my masters on soil pollution in the vicinity of Polish Polar Station Hornsund and PhD on dynamics of snowpack in the SW Spitsbergen. Since 2013 I'm an Assistant Professor at the Department of Polar and Marine Research IG PAS in Warsaw. My main research interests are the...
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Historia filozofii na tle cywilizacji europejskiej (do końca XIII wieku).Sopot: Fund. na rzecz Pol. Zw. Kredytowych. Wydaw. ''Pieniadze i Więź''**2003 200s. 3 tab. 100 il. 7 map bibliogr. 300 poz.
Publication...
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Numerical solutions for large deformation problems in geotechnical engineering
PublicationThe problem of large deformations often occurs in geotechnical engineering. Numerical modeling of such issues is usually complex and tricky. The chosen solution has to implicate soil-soil and soil-structure interactions. In this paper, a review of the most popular numerical methods for large deformation problems is presented. The Coupled Eulerian-Lagrangian (CEL) method, the Arbitrary Lagrangian-Eulerian (ALE) method, the Smoothed...
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Measurements of raising of 160EC pantograph type
Open Research DataIn this description the results of the experiment and also simulation performed on the total assembly of the 160 EC pantograph type is given. Multibody dynamics of pantograph rising due to external torque and forces are measured for parameter validation of the pantograph model.
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PROJEKTOWANIE WIELOWYMIAROWEGO REGULATORA BACKSTEPPING W UKŁADZIE DYNAMICZNEGO POZYCJONOWANIA STATKU
PublicationW komercyjnych systemach dynamicznego pozycjonowania statku, pomimo znacznego wzrostu poziomu automatyzacji, wykorzystywane jest nadal sterowanie typu PID. Poprawę jakości procesu pozycjonowania może umożliwić wykorzystanie bardziej efektywnych algorytmów, oferujących zaawansowane nieliniowe techniki sterowania. W artykule przedstawiono zagadnienie projektowania regulatora pozycji i kursu dla układu dynamicznego pozycjonowania...
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Invasive breast carcinoma of no special type - Female, 55 - Tissue image [6130730026854851]
Open Research DataThis is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.
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Marek Galewski dr hab. inż.
PeopleMgr inż. - 2002r. - Politechnika Gdańska; Wydział Elektroniki, Telekomunikacji i Informatyki; Automatyka i RobotykaDr inż. - 2007r. - Politechnika Gdańska; Wydział Mechaniczny; Budowa i eksploatacja maszynDr hab. inż. - 2016r. - Politechnika Gdańska; Wydział Mechaniczny; Budowa i eksploatacja maszyn Dotychczasowe i planowane obszary badań: Redukcja drgań podczas obróbki frezowaniem i toczeniem Zastosowanie zmiennej prędkości obrotowej...
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Experimental Comparison of Straight Lines and Polynomial Interpolation Modeling Methods in Ship Evolutionary Trajectory Planning Problem
PublicationPaper presents the application of evolutionary algorithms and polynomial interpolation in ship evolutionary trajectory planning method and its comparison to classic approach, where trajectory is modeled by straight lines. Evolutionary algorithms are group of methods that allows\ to find a collision free trajectory in real time, while polynomial interpolation allows to model smooth trajectory, which keeps continuity of velocity...
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Dynamic Positioning System with Vectorial Backstepping Controller
PublicationThe problem of synthesis a dynamic positioning system for low frequency model of surface vessel was considered in this paper. The recursive vectorial backstepping control design was used to keep a fixed position and heading in presence of wave disturbances. The passive observer was introduced to smooth the measurements and to estimate the velocities needed for the control algorithm. Some parameters of observer were optimized off-line...
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Systemy informacji przestrzennej (WILiŚ, IS, niestacjonarne, st. I, sem. 7) - rok 2023/2024
e-Learning CoursesSłuchacz poznaje podstawy Systemów Informacji Przestrzennej – GIS. Poznaje podstawowe narzędzia analizy wektorowej. Potrafi wykonać wydruk mapy oraz przeprowadzić analizę nasłonecznienia.
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Systemy informacji przestrzennej - (WILiŚ, IS, st. I, sem. 1) - rok 2022/2023
e-Learning CoursesSłuchacz poznaje podstawy Systemów Informacji Przestrzennej – GIS. Poznaje podstawowe narzędzia analizy wektorowej. Potrafi wykonać wydruk mapy oraz przeprowadzić analizę nasłonecznienia.
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Systemy informacji przestrzennej (WILiŚ, IS, niestacjonarne, st. I, sem. 7) - rok 2022/2023
e-Learning CoursesSłuchacz poznaje podstawy Systemów Informacji Przestrzennej – GIS. Poznaje podstawowe narzędzia analizy wektorowej. Potrafi wykonać wydruk mapy oraz przeprowadzić analizę nasłonecznienia.
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Systemy informacji przestrzennej - (WILiŚ, IS, st. I, sem. 1) - rok 2023/2024
e-Learning CoursesSłuchacz poznaje podstawy Systemów Informacji Przestrzennej – GIS. Poznaje podstawowe narzędzia analizy wektorowej. Potrafi wykonać wydruk mapy oraz przeprowadzić analizę nasłonecznienia.
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Systemy informacji przestrzennej (WILiŚ, IS, niestacjonarne, st. I, sem. 4) - rok 2023/2024
e-Learning CoursesSłuchacz poznaje podstawy Systemów Informacji Przestrzennej – GIS. Poznaje podstawowe narzędzia analizy wektorowej. Potrafi wykonać wydruk mapy oraz przeprowadzić analizę nasłonecznienia.
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Point cloud in archaeological and historical survey
PublicationIn the last decade the potential of using the point clouds in archaeological research has been noted. Therefore, a number of guidelines concerning aspects of data acquisition (resolution and format) were developed. They also included the way of searching the imaged area to identify archaeological and historical cultural heritage sites. The purpose of this research was to analyze the point cloud for selected woodland survey. Forest...