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Search results for: 3D Point Cloud
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Determination of rectification corrections for semi gantry crane rail axes in the local 3D coordinate system
PublicationElectronic tacheometers are currently the standard instruments used in geodetic work, including also geodetic engineering measurements. The main advantage connected with this equipment is among others high accuracy of the measurement and thus high accuracy of the final determinations represented for example by the points’ coordinates. One of many applications of the tacheometers is the measurement of crane rail axes. This measurement...
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THE METHOD OF ANALYSIS OF DAMAGE REINFORCED CONCRETE BEAMS USING TERRESTRIAL LASER SCANNING
PublicationThe authors present an analysis of the possibility to assess deformations and mode of failure of R-C beams using terrestrial laser scanning. As part of experiments carried out at the Regional Laboratory of Construction (at Gdansk University of Technology), reinforced concrete beams were subjected to destruction by bending and by shear. The process of press impact on the reinforced concrete beam was recorded using terrestrial laser...
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The life cycle cost of a building from the point of view of environmental criteria of selecting the most beneficial offer in the area of competitive tendering
PublicationThe article analyses environmental and ecological criteria of selecting the most beneficial offer in the aspect of LCC. Construction works contracts and the potential method of defining the above criteria, among others, is pondered on (for example by the recommendation of a material, which is supposed to be used, a ban on substances that are harmful for human health as well for the environment). In the relation to the above, it...
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UAV Survey Images - 3D Model - GUT Water Tower MP1
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Water Tower at Gdansk University Of Technology CampusLocation: Gdansk, Pomerania, PolandDrone type: DJI Mavic Pro 1Flight plan: CircleTarget Product: 3D ModelDate: 13.05.2019Direct georeferencing: yesMetadata data: yes/GPSGCP: NoGCP Quality: N/ACamera Name: DJI FC220Model type: PerspectiveImage...
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UAV Survey Images - 3D Model - GUT Water Tower MP2
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Water Tower at Gdansk University Of Technology CampusLocation: Gdansk, Pomerania, PolandDrone type: DJI Mavic Pro 2Flight plan: CircleTarget Product: 3D ModelDate: 08.11.2019Direct georeferencing: yesMetadata data: yes/GPSGCP: NoGCP Quality: N/ACamera Name: Hasselblad L1D-20cModel...
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Monitoring the BTEX Volatiles during 3D Printing with Acrylonitrile Butadiene Styrene (ABS) Using Electronic Nose and Proton Transfer Reaction Mass Spectrometry
PublicationWe describe a concept study in which the changes of concentration of benzene, toluene, ethylbenzene, and xylene (BTEX) compounds and styrene within a 3D printer enclosure during printing with different acrylonitrile butadiene styrene (ABS) filaments were monitored in real-time using a proton transfer reaction mass spectrometer and an electronic nose. The quantitative data on the concentration of the BTEX compounds, in particular...
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The topography of carbon black-polylactide composite 3D printed electrodes after femtosecond laser ablation
Open Research DataThis dataset contains a series of scanning electron microscopy images revealing the topography of 3D printed carbon black-polylactide composite electrodes after laser ablation with a femtosecond laser. Different laser powers were investigated, namely: 10%, 25%, 50%, 75% and 100%. The CB-PLA electrodes were 3D printed using an Ender printer. Femtosecond laser NKT Photonics, Origami XP parameters: power at 100%...
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Sample handling and determination of physico-chemical parameters in rime, hoarfrost, dew, fog and cloud water samples - a review
PublicationW pracy przedstawiono różne typy próbników stosowanych do pobierania próbek osadów atmosferycznych (szron, szadź, rosa, mgła i woda z chmur). Zaprezentowano urządzenia o różnym stopniu automatyzacji. W pracy przedstawiono również informacje literaturowe na temat oznaczania parametrów fizyko-chemicznych w próbkach osadów atmosferycznych z zastosowaniem odpowiednich technik pomiarowych.
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SmartRock-Based Research on Gyratory Locking Point for Stone Mastic Asphalt Mixture
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A Reference Point Method to Triple-Objective Assignment of Supporting Services in a Healthcare Institution
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Correlated electrons and transport in a quantum point contact and in a double-quantum-dot system
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Positive solutions to second order four-point impulsive problems with deviating arguments
PublicationStosując tw. Leggetta-Williamsa, podano warunki dostateczne na istnienie dodatnich rozwiązań dla czteropunktowych problemów brzegowych dla równań różniczkowych rzędu drugiego z odchylonymi argumentami. Dyskutowane były problemy gdy argument odchylony był typu opóźnionego lub wyprzedzonego.
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Resolving Conflicts in Object Tracking in Video Stream Employing Key Point Matching
PublicationA novel approach to resolving ambiguous situations in object tracking in video streams is presented. The proposed method combines standard tracking technique employing Kalman filters with global feature matching method. Object detection is performed using a background subtraction algorithm, then Kalman filters are used for object tracking. At the same time, SURF key points are detected only in image sections identified as moving...
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Solving boundary value problems for delay differential equations by a fixed-point method
PublicationOgólne liniowe zagadnienie brzegowe dla nieliniowego układu równań różniczkowych z opóźnieniem jest redukowane do zagadnienia o punkcie stałym odpowiedniego operatora a następnie poszukiwany punkt stały tego operatora jest przybliżany funkcją kawałkami liniową zdefiniowaną poprzez jej wartości w węzłach. Przy odpowiednich założeniach istnienie tego punktu stałego jest równoważne istnieniu tzw. epsilon przybliżonych punktów stałych...
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How to achieve sustainability?-Employee's point of view on company's culture and CSR practice
PublicationThe people are the company. This study aims to examine the structure of relationships between company culture, performance, corporate social responsibility (CSR), and reputation, as seen from the employee's perspective, to determine which company culture factors most influence CSR practice and, as a result, sustain a company's development and improve its performance. To accomplish this goal, we conducted a survey among employees...
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Highly efficient maximum power point tracking control technique for PV system under dynamic operating conditions
PublicationThe application of small-scale electrical systems is widespread and the integration of Maximum Power Point Tracking (MPPT) control for Photovoltaic systems with battery applications further enhances the techno-economic feasibility of renewable systems. For this purpose, a novel MPPT control system using Dynamic Group based cooperation optimization (DGBCO) algorithm is utilized for PV systems. The population in the DGBCO is divided...
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Terrestrial Survey Images - 3D Exterior Model - Zukowo Church - Canon
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Parafia Wniebowzięcia Najświętszej Maryi Panny w ŻukowieLocation: Żukowo, Pomorskie, Kartuski County, PolandDrone type: n/a (Teresstrial images)Flight plan: CircleTarget Product: 3D ModelDate: 21.04.2018Direct georeferencing: yesMetadata data: NoGCP: NoCamera Name: Canon EOS 500DModel...
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The effect of numerical 2D and 3D FEM element modelling on strain and stress distributions at laser weld notches in steel sandwich type panels
PublicationLike other means of transport, merchant ships face the problem of increasing requirements concerning the environment protection, which, among other issues, implies the reduction of fuel consumption by the ship. Here, the conventional approach which consists in making use of higher strength steels to decrease the mass of the ship hull can be complemented by the use of new steel structures of sandwich panel type. However, the lack...
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An Overview on Materials and Techniques in 3D Bioprinting Toward Biomedical Application
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Properties of Composite Modified with Limestone Powder for 3D Concrete Printing
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A Method and Device for 3D Recognition of Cutting Edge Micro Geometry
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adaptive finite-element multigrid method in 3d magnetostatic analysis.
PublicationPrzedstawiono procedurę analizy magnetostatycznej obwodów mikrofalowych zawierających przewodniki o dowolnym kształcie. Zakłada się pobudzenie pola magnetostatycznego zadane w postaci wartości całkowitego prądu płynącego w przewodniku sygnałowym. Warunki brzegowe w strukturze od dowolnym kształcie, bez płaszczyzn symetrii wprowadza się za pomocą powierzchni rozdzielających. Takie sformułowanie problemu prowadzi jednak do szeregu...
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Application of virtual reality modeling language for 3D seafloor imaging.
PublicationW artykule przedstawiono koncepcję wykorzystania języka opisu wirtualnej rzeczywistości do trójwymiarowej wizualizacji objektów znajdujących się na dnie morskim w zastosowaniu do danych pochodzących z systemów hydroakustycznych. W szczególności zaprezentowano technikę tworzenia trójwymiarowych scen przeznaczonych do szerokiego udostępniania w sieci Internet.
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Modeling 3D Objects for Navigation Purposes Using Laser Scanning
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Inverse method for 3D shaped centrifugal compressor (rotor and diffuser)
PublicationW artykule przedstawiono sposób wyznaczania kształtu wirnika i dyfuzora sprężarki promieniowej. Podano układ równań oraz warunki zamknięcia układu. Przykładowe rozwiązanie wskazuje na silny wpływ warunków na wlocie na kształt dyfuzora.
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RATIONALE FOR THE INTRODUCTION OF 3D CADASTRE AS ILLUSTRATED WITH THE EXAMPLE OF THE CITY OF KRAKÓW
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Optymalizacja nastaw regulatorów PID do sterowania suwnicą 3D
PublicationSuwnica stanowi ciekawy, a zarazem skomplikowany obiekt sterowania, który znajduje zastosowanie w różnych gałęziach przemysłu. W artykule przedstawiono obiekt sterowania wraz jego układami sterowania wykorzystującymi regulatory PID. Następnie dobrano parametry regulatorów wybranymi metodami inżynierskimi i optymalizacyjnymi. Przeprowadzono szczegółową analizę porównawczą zaproponowanych rozwiązań.
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Electromagnetic Simulation with 3D FEM for Design Automation in 5G Era
PublicationElectromagnetic simulation and electronic design automation (EDA) play an important role in the design of 5G antennas and radio chips. The simulation challenges include electromagnetic effects and long simulation time and this paper focuses on simulation software based on finite-element method (FEM). The state-of-the-art EDA software using novel computational techniques based on FEM can not only accelerate numerical analysis, but...
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Laserowa modyfikacja treści i nanonieporozumienia drukowane w 3D
PublicationW obliczu wielkich wyzwań naukowych zapomina się czasem o drobnych niedopowiedzeniach, które mogą zaważyć na wyniku całego badania. Szeroka współpraca, zwłaszcza interdyscyplinarna, jest niezbędna do osiągnięcia sukcesu, ale bywa również przyczyną powstawania nieporozumień i formułowania błędnych założeń technicznych. Nadużywanie modnych słów kluczowych może doprowadzić do szeregu nieporozumień i wyciągania fałszywych wniosków...
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A 3D lattice model to describe fracture process in fibrous concrete
PublicationArtykuł omawia wyniki modelowania procesu zarysowania w elementach betonowych zawierające stalowe włókna przy zastosowaniu dyskretnego modelu kratownicowego. Beton był modelowany na poziomie mezoskali z uwzględnieniem 5 faz: kruszywa, zaczynu cementowego, włókien i obu stref kontaktu. Obliczenia trójwymiarowe wykonano dla jednoosiowego rozciągania.
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UAV Survey Images - 3D Model - Jastrzebia Gora Cliff 07.2017- MP1
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Cliff in Jastrzebioa GoraLocation: Jastrzebia Gora, Pomerania, PolandDrone type: DJI Mavic Pro 1Flight plan: Single Grid/Free FlightTarget Product: 3D ModelDate: 06.07.2017Direct georeferencing: yesMetadata data: yes/GPSGCP: NOGCP Quality: N/ACamera Name: DJI FC220Model type: PerspectiveImage...
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UAV Survey Images - 3D Model - Trakt Sw Wojciecha Street - Orunia
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Street Trakt Sw Wojciecha - OruniaLocation: Gdansk Orunia, Pomerania, PolandDrone type: DJI Mavic Pro 1Flight plan: Double GridTarget Product: 3D ModelDate: 17.11.2018Direct georeferencing: yesMetadata data: yes/GPSGCP: NoGCP Quality: N/ACamera Name: DJI FC220Model type: PerspectiveImage...
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UAV Survey Images - 3D Model - Jastrzebia Gora Cliff 11.2017- MP1
Open Research DataDataset description: Raw images from photogrammetric survey. Object: Cliff in Jastrzebioa GoraLocation: Jastrzebia Gora, Pomerania, PolandDrone type: DJI Mavic Pro 1Flight plan: Single Grid/Free FlightTarget Product: 3D ModelDate: 05.11.2017Direct georeferencing: yesMetadata data: yes/GPSGCP: NOGCP Quality: N/ACamera Name: DJI FC220Model type: PerspectiveImage...
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Processing of Polyester-Urethane Filament and Characterization of FFF 3D Printed Elastic Porous Structures with Potential in Cancellous Bone Tissue Engineering
PublicationThis paper addresses the potential of self-made polyester-urethane filament as a candidate for Fused Filament Fabrication (FFF)-based 3D printing (3DP) in medical applications. Since the industry does not provide many ready-made solutions of medical-grade polyurethane filaments, we undertook research aimed at presenting the process of thermoplastic polyurethane (TPU) filament formation, detailed characteristics, and 3DP of specially...
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Ranking of ecotoxisity tests for underground water assessment using the Hasse diagram technique
PublicationThe present study deals with the novel application of the Hasse diagram technique (HDT) for the specific ranking of ecotoxicity tests capable of assessment of underground water quality. The area studied is a multi-municipal landfill in the northern Poland. The monitoring network of the landfill constitutes of 27 piezometers for underground water monitoring and two observation points at surface water courses. After sampling, chemical...
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An Efficient Framework For Fast Computer Aided Design of Microwave Circuits Based on the Higher-Order 3D Finite-Element Method
PublicationIn this paper, an efficient computational framework for the full-wave design by optimization of complex microwave passive devices, such as antennas, filters, and multiplexers, is described. The framework consists of a computational engine, a 3D object modeler, and a graphical user interface. The computational engine, which is based on a finite element method with curvilinear higher-order tetrahedral elements, is coupled with built-in...
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Magnetic Signature Description of Ellipsoid-Shape Vessel Using 3D Multi-Dipole Model Fitted on Cardinal Directions
PublicationThe article presents a continuation of the research on the 3D multi-dipole model applied to the reproduction of magnetic signatures of ferromagnetic objects. The model structure has been modified to improve its flexibility - model parameters determined by optimization can now be located in the cuboid contour representing the object's hull. To stiffen the model, the training dataset was expanded to data collected from all four cardinal...
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Locally sculptured modification of the electrochemical response of conductive poly(lactic acid) 3D prints by femtosecond laser processing
PublicationThis manuscript presents an approach to sculpture high electrochemical activity of the 3D printed electrodes with poly(lactic acid) (PLA) matrix and carbon black (CB) filler by femtosecond laser (FSL) ablation. CB-PLA utility for electrochemical applications depends on a surface modification aiming to remove the PLA and uncover the conductive CB. We have discussed how laser pulse energy is critical for such an activation process....
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Three Point Bending of Laser Engineered Net Shaping (LENS) Repaired Inconel 625
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Local properties of the solution set of the operator equation in Banach spaces in a neighbourhood of a bifurcation point.
PublicationW niniejszej pracy badamy problem istnienia bifurkacji w zbiorze rozwiązań równania F(x,p)=0, gdzie F jest odwzorowaniem klasy C^2z iloczynu kartezjańskiego X i R^k do Y, X i Y są przestrzeniami Banacha takimi, że X jest podprzestrzenią liniową Y. Co więcej, dany jest iloczyn skalarny w Y, ciągły względem norm w X i Y. Pokazujemy, że pod pewnymi warunkami (0,p) jest punktem bifurkacji i opisujemyzbiór rozwiązań równania F(x,p)=0...
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Examining users’ preferences towards vertical graphical toolbars in simple search and point tasks
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On nonlinear two-point boundary value problems for impulsive differential-algebraic problems [online]
PublicationSformułowano warunki dostateczne na istnienie ekstremalnych rozwiązań dla zagadnień brzegowych dla równań różniczkowo-algebraicznych z impulsami. Badano też nierówności różniczkowo-algebraiczne z impulsami przy odpowiednich warunkach brzegowych. Na przykładzie zilustrowano otrzymane wyniki.
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Thermal Decomposition of Carbamoyl Meldrum’s Acids: A Starting Point for the Preparation of 1,3-Oxazine Derivatives
PublicationThe ability to undergo [4 + 2] versus [2 + 2] cycloaddition was under investigation for ketenes thermally generated from carbamoyl Meldrum’s acid. Usually, 1,3-oxazino-5-carbamoylo-4,6-diones are formed when carbamoyl Meldrum’s acid reacts with imine. However, in some cases, a reaction takes an unexpected course, leading to the formation of tetraponerines alkaloids derivatives or cyclic iminoethers.
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Deduplication of Tracked Objects Position Data at Single Observation Point of a Vessel Monitoring System
PublicationVessel Monitoring System (VMS) play a major role in safety navigation. In most cases they are based on two data sources, namely Automatic Identification System (AIS) and Automatic Radar Plotting Aids (ARPA). Integration of data obtained from these sources is an important problem, which needs to be solved in order to ensure the correct performance of a given VMS. In this paper basic functions which should be implemented in a tracked...
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Spatial expansion of the symmetrical objects point clouds to the lateral surface of the cylinder – Mathematical model
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Structural, functional, and stability change predictions in human telomerase upon specific point mutations,
PublicationOverexpression of telomerase is one of the hallmarks of human cancer. Telomerase is important for maintaining the integrity of the ends of chromosomes, which are called telomeres. A growing number of human disease syndromes are associated with organ failure caused by mutations in telomerase (hTERT or hTR). Mutations in telomerase lead to telomere shortening by decreasing the stability of the telomerase complex, reducing its accumulation,...
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Preliminary studies on DNA retardation by MutS applied to the detection of point mutations in clinical samples
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Opinia o nowej technologii nazwanej „Technologia frezowania 3D delikatnych tworzyw sztucznych”, planowanej do wdrożenia w ramach inwestycji na którą ma być udzielony kredyt technologiczny.
PublicationOpinia dotyczyła projektu zatytułowanego "Wdrożenie innowacyjnej technologii w zakresie frezowania 3D delikatnych tworzyw sztucznych", który stanowi przedmiot wniosku o udzielenie kredytu technologicznego. Opiniowano nowość technologii o nazwie „Technologia frezowania 3D delikatnych tworzyw sztucznych”. Opinię wystawił Wydział Mechaniczny Politechniki Gdańskiej. Podmiotem wnioskującym sporządzenie opinii oraz wdrażającym nową technologię...
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Results and models for Novel high frequency components with non-conventional shape employing smooth geometry deformation of 3D solid with FFD
Open Research DataThe project aims to investigate the possibility of developing and manufacturing novel high frequency devices having non-standard geometries, allowing for improved electromagnetic performance over what is achievable with currently available design tools. The non-conventional geometry will be obtained by employing the free-form shape deformation technique...
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3D mesoporous α-Co(OH)2 nanosheets electrodeposited on nickel foam: A new generation of macroscopic cobalt-based hybrid for peroxymonosulfate activation
PublicationCobalt-based catalysts with high stability and facile recovery for heterogeneous peroxymonosulfate (PMS) activation are still rather sparse and therefore highly desirable. Herein, 3D mesoporous α-Co(OH)2 nanosheets was created on robust nickel foam (NF) via facile electrodeposition approach at 6 mA/cm2 for only 400 s. Almost complete removal of phenol can be achieved within 7 min with a degradation rate of 0.39 min−1, 2 times higher...