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Search results for: STUDENTS' THESES
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Analysis of compressive forces in CFGFT cylindrical pillars and their coatings using laboratory tests and metric spaces
PublicationThe article discusses compressive forces tests in composite-concrete pillars with the use of laboratory active experiment including the factors and properties of materials which have a significant impact on the test results and their repeatability. A polymer composite based on glass fiber reinforced resin with different fiber beam angles (20, 55 and 85) was used as a buffer/coat of the pole. Due to the problems with direct comparison...
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On trees with double domination number equal to 2-outer-independent domination number plus one
PublicationA vertex of a graph is said to dominate itself and all of its neighbors. A double dominating set of a graph G is a set D of vertices of G such that every vertex of G is dominated by at least two vertices of D. The double domination number of a graph G is the minimum cardinality of a double dominating set of G. For a graph G=(V,E), a subset D subseteq V(G) is a 2-dominating set if every vertex of V(G)D has at least two neighbors...
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Analyzing sets of phylogenetic trees obtained from bayesian MCMC process using topology metrics
PublicationThe reconstruction of evolutionary trees is one of the primary objectives in phylogenetics. Such a tree represents historical evolutionary relationship between different species or organisms. Tree comparisons are used for multiple purposes, from unveiling the history of species to deciphering evolutionary associations amongorganisms and geographical areas.In the paper, we describe a general method for comparing hylogenetic trees....
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Water Needs of Sweet Cherry Trees in the Light of Predicted Climate Warming in the Bydgoszcz Region, Poland
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The Risk Indicators of Construction Projects’ Cost Overruns Assessed with PCA, Decision Trees, and Pearson’s Correlations
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The mini ELITPC: Reconstruction and identification of charged particles tracks during beam tests at IFIN-HH
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<title>Environmental tests of Intranet and Internet metrological station and network with photonic sensors and transmission</title>
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Positive results of serological tests for syphilis in pregnancy – diagnostic and therapeutic problems, report of two cases
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Methodology of determination of geotechnical parameters for non-cohesive soils based on dynamic and static penetration tests
PublicationPrzedstawiono zakres, metodykę i wyniki sondowań dynamicznych i statycznych podłoży niespoistych dla dwóch dużych obiektów hydrotechnicznych: terminalu przeładunku zboża w Porcie Północnym w Gdańsku i planowanego kanału żeglugowego przez Mierzeję Wiślaną. Na podstawie obu rodzajów sondowań określono parametry geotechniczne badanych gruntów, przeanalizowano je i porównano ze sobą.
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Experimental tests and numerical simulations of full scale composite sandwich segment of a foot- and cycle- bridge
PublicationIn the paper experimental tests and numerical simulations of a full cross-section segment of ultimately designed foot-and cycle-bridge are presented. The experimental tests were conducted on element with length reduced to 3 m and unchanged (target) cross-section dimensions. The external skin of structure is GFRP laminate while internal core is PET foam. Several quasi-static tests were performed using hydraulic cylinder to generate...
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Numerical Studies on Propellers in Open Water and behind Hulls aiming to support the Evaluation of Propulsion Tests
PublicationA RANS based numerical analysis of propellers can contribute considerably to our understanding of propeller/hull interaction. It may also allow for a review of scaling procedures on results from experimental fluid dynamics (EFD). Using various RANS codes (Fluent, CFX, STAR-CCM+ and FreSCo+) on common test cases the authors first focused on propeller open water (POW) calculations. Next we simulated the propeller hull interaction...
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Results from tests on bolted connection components for evaluation of friction coefficient in various contact conditions
PublicationThe main purpose of the work was the analysis and evaluation of the self-locking quality of a bolted joint covered with Xylan 1070 coating, with comparison to the classic bolts lubricated with Molykote compound during assembly. The second part of the work was the verification of the compliance of the bolts and nuts used in the installation with the ASME B1.1 norm.
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Frontier education for a sustainable future - speculative design in architecture as a transdisciplinary experiment
PublicationIn this article, the authors propose the term frontier education referring to the well-established notion of frontier research - one, that through opening unexpected transdisciplinary perspectives, may offer new insights and create a fertile ground for new discoveries and ground-breaking concepts. In answer to the question of how to get rid of normative thinking and extend architectural experimentations, a speculative design architectural...
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Euro III / Euro IV Emissions - A Study of Cold Start and Warm Up Phases with a SI (Spark Ignition) Engine
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Third order nonlinear optical effects of ZnO–ZrO2–B2O3 glass ceramics embedded with ZnZrO3 perovskite crystal phases
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Evaluation of Gas Chromatography Stationary Phases Based on Morpholinium Ionic Liquids by McReynolds Constants and Activity Coefficients at Infinite Dilution
PublicationIn this work, four ionic liquids (ILs) based on the N-alkyl-N-methylmorpholinium cation ([Mor1,R], in which R = 2, 4, 8, or 10) and bis (trifluoromethanesulfonyl)imide anion were synthesized. Using GLC, a number of parameters describing the sorption properties of the investigated ILs were determined. The values of Kovats indices, McReynolds constants, and activity coefficients at infinite dilution were the basis for the evaluation...
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Bezpłatny Kurs Samoobrony dla Studentek PG
EventsZapraszamy studentki Politechniki Gdańskiej do wzięcia udziału w bezpłatnym kursie samoobrony. Trenerzy Akademickiego Klubu Taekwondo po raz XV przeprowadzą szkolenie z podstawowych technik samoobrony.
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Bezpłatny Kurs Samoobrony dla Studentek PG
EventsZapraszamy studentki Politechniki Gdańskiej do wzięcia udziału w bezpłatnym kursie samoobrony. Trenerzy Akademickiego Klubu Taekwondo po raz XV przeprowadzą szkolenie z podstawowych technik samoobrony.
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Bezpłatny Kurs Samoobrony dla Studentek PG
EventsZapraszamy studentki Politechniki Gdańskiej do wzięcia udziału w bezpłatnym kursie samoobrony. Trenerzy Akademickiego Klubu Taekwondo po raz XV przeprowadzą szkolenie z podstawowych technik samoobrony.
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Szkolenie CNE: Błędy wykładowców oczami studentów
EventsCentrum Nowoczesnej Edukacji PG zaprasza na kolejne cotygodniowe szkolenie w ramach programu „Dydaktyczne Piątki”: Błędy wykładowców oczami studentów. Porażka jako sposób osiągania mistrzostwa.
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Inauguracja roku akad. dla studentów zagranicznych
Eventsmiejsce: Dziedziniec im. Fahrenheita, Gmach Główny, godz. 14.00-16.00
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Bezpłatny Kurs Samoobrony dla Studentek PG
EventsZapraszamy studentki Politechniki Gdańskiej do wzięcia udziału w bezpłatnym kursie samoobrony. Trenerzy Akademickiego Klubu Taekwondo po raz XV przeprowadzą szkolenie z podstawowych technik samoobrony.
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Inauguracja roku akademickiego dla studentów zagranicznych
EventsW trakcie uroczystości będzie miało miejsce oficjalne powitanie studentów zagranicznych rozpoczynających naukę na PG.
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Joanna Janczewska prof. dr hab.
PeopleJoanna Janczewska obtained her PhD degree at the University of Gdansk in 2002. From October 1999 to September 2004 she was an assistant at the University of Gdansk. Since October 2004 she has been an assistant professor at the Gdansk University of Technology. Moreover, from October 2008 to September 2010 she had a visiting position in the Institute of Mathematics of the Polish Academy of Sciences. Her mathematical interests...
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Wojciech Wysocki
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Artificial intelligence in architectural education - green campus development research
PublicationThe rapid advancement of artificial intelligence (AI) technologies has introduced new possibilities and challenges in design education. This article explores the need for changes and adaptations in the teaching process of design as AI-related technologies, based on image generation, transform the creative process and offer novel opportunities. In a research-by-design studio in an architectural faculty in Poland, students who utilised...
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50 lat minęło - z historii studenckich seminariów naukowych mechaników
PublicationPrzedstawiono 50-letnią historie Seminariów Naukowych Studentów i Młodych Inżynierów Mechaników na Wydziale Mechanicznym PG. Podano organizatorów poszczególnych edycji oraz zwycięzców wygłoszonych referatów w kategorii studenci, dyplomanci i doktoranci. W seminariach brali udział nie tylko uczestnicy z Politechniki Gdańskiej, ale i z innych technicznych uczelni krajowych i zagranicznych.
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Magnetic structure and properties of theS=5∕2triangular antiferromagnetα−NaFeO2
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Internet photogrammetry as a tool for e-learning
PublicationAlong with Internet development, there were interactive applications which allow for remote sensing and photogrammetric analysis. An example of an application that can provide Earth images and make it possible to measure distances in these images is Google Earth. The authors, who have experience from 2001-2015 argue that it is possible and it is important to create more advanced photogrammetric network applications. In this there...
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Simulation of the IT Service and Project Management Environment
PublicationThe authors of this paper present a simulation of the socio-technical system in which teams of students – regarded as low-maturity organizations – were given a task to utilize the (relatively) mature technologies that support IT project and service management. The experiment consisted of the following phases: teams formation, introduction to technologies used during the simulation, performing a set of reactive and proactive service...
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Daylight evaluation for multi-family housing in Poland
PublicationThis PhD dissertation focuses on methods of daylight appraisal useful in the design of the contemporary multifamily housing. The theoretical part of the thesis offers a review of daylight indicators, evaluations methods and tools within the built environment. It covers a review of daylight recommendations found in building standards and other normative documents affecting the design of the residential spaces. A pilot work survey...
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Mateusz Muchlado dr
PeopleMateusz Muchlado - assistant professor at the Department of Management and Quality Engineering. He obtained a doctoral degree in management and quality sciences in 2020 at the Faculty of Management and Economics of the Gdańsk University of Technology, defending his thesis entitled "Outsourcing in selected medical entities of the Pomeranian Voivodeship". Associated with the Gdańsk University of Technology since 2010, a graduate...
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Factors influencing the selection of the ideal employer
Open Research DataThis dataset contains the results of research that were carried out by the Wrocław University of Science and Technology in March and April 2016, using an anonymous "on-line" questionnaire. 1,320 people took part in the study entitled "My ideal employer" - students and doctoral students of all faculties of the university (including those fields of study...
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Effect of Maximal Apnoea Easy-Going and Struggle Phases on Subarachnoid Width and Pial Artery Pulsation in Elite Breath-Hold Divers
PublicationPurpose: The aim of the study was to assess changes in subarachnoid space width (sas-TQ), the marker of intracranial pressure (ICP), pial artery pulsation (cc-TQ) and cardiac contribution to blood pressure (BP), cerebral blood flow velocity (CBFV) and cc-TQ oscillations throughout the maximal breath hold in elite apnoea divers. Non-invasive assessment of sas-TQ and cc-TQ became possible due to recently developed method based on...
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Początki i rozwój Katedry Automatyki na Wydziale Elektrycznym Politechniki Gdańskiej
PublicationNiniejszy artykuł obejmuje historię powstawania i rozwoju Katedry Automatyki na Wydziale Elektrotechniki i Automatyki Politechniki Gdańskiej oraz związanego z tym powstawania i rozwoju na Wydziale kierunku studiów automatyka i robotyka. W kształceniu studentów tego kierunku studiów uczestniczyły także i inne katedry Wydziału. Zajęcia dydaktyczne z zastosowań automatyki prowadzili również pracownicy: Katedry Miernictwa Elektrycznego,...
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Learning design of a blended course in technical writing
PublicationBlending face-to-face classes with e-learning components can lead to a very successful outcome if the blend of approaches, methods, content, space, time, media and activities is carefully structured and approached from both the student’s and the tutor’s perspective. In order to blend synchronous and asynchronous e-learning activities with traditional ones, educators should make them inter-dependent and develop them according to...
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Ammonium removal from aqueous solution by natural zeolite, Transcarpathian mordenite, kinetics, equilibrium and column tests.
PublicationOpisano wyniki badań procesu usuwania jonów amonowych z wodnych roztworów modelowych z wykorzystaniem mordenitu-naturalnego zeolitu (w postaci surowej i po odpowiedniej wstępnej obróbce) zarówno w warunkach statycznych jak i dynamicznych. Oszacowano pojemność jonowymienną w stosunku do jonów amonowych (1,64 meq/g) w przypadku, gdy stężenie początkowe analitu było na poziomie 1000 mg/l. Sprawdzono również wpływ na przebieg procesu...
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Estimation and modeling hydrolysis of slowly biodegradable substrate based on the batch respirometric tests in activated sludge systems
PublicationNowadays, appropriate determination of chemical oxygen demand (COD) fractionation together with degradation kinetics of organic compounds have a prime importance on the design and operation of activated sludge systems. Batch respirometric tests based on the oxygen uptake rates (OUR) and corresponding COD is accepted method to reflect the consumption of biodegradable substrates. The influence of the readily biodegradable (Ss) fraction...
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Employing Subjective Tests and Deep Learning for Discovering the Relationship between Personality Types and Preferred Music Genres
PublicationThe purpose of this research is two-fold: (a) to explore the relationship between the listeners’ personality trait, i.e., extraverts and introverts and their preferred music genres, and (b) to predict the personality trait of potential listeners on the basis of a musical excerpt by employing several classification algorithms. We assume that this may help match songs according to the listener’s personality in social music networks....
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Standard and modified falling mass impact tests on preplaced aggregatefibrous concrete and slurry infiltrated fibrous concrete
PublicationAlthough several studies have been conducted to evaluate the impact response of concrete using theAmerican Concrete Institute (ACI) 544-2R falling mass impact test, the variations in test results are themain drawback of this testing method. This study aims to reduce the variations in experimental impacttest results by introducing two simple test setup modifications; (1) using coarse or fine aggregate bed-ding as an alternative...
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Improving methods to calculate the loss of ecosystem services provided by urban trees using LiDAR and aerial orthophotos
PublicationIn this paper we propose a methodology for combining remotely sensed data with field measurements to assess selected tree parameters (diameter at breast height (DBH) and tree species) required by the i-Tree Eco model to estimate ecosystem services (ES) provided by urban trees. We determined values of ES provided by trees in 2017 in Racibórz (a city in South Poland) and estimated the loss of ES from January 1, 2017 to March 5, 2017,...
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The fracture behaviour of notched PMMA specimens under simple loading conditions – Tension and torsion experimental tests
PublicationThis paper presents the results of experimental testing of flat PMMA specimens during uniaxial loading conditions. Two separate tests were conducted: tensile and torsion. The specimens were weakened with V-type edge notches with different root radii: 0.5; 2 and 10 mm. The specimens were made in two thickness variants: 5 and 15 mm. Monotonic tensile and torsion tests were carried out while keeping the averaged strain rate constant,...
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Impact and stretching standardized tests as useful tools for assessment of viscoelastic behavior for highly rubberized asphalt binder
PublicationAsphalt binder is generally identified as a brittle material at low service temperature or under high-speed load, and the brittleness becomes serious after weathering aging. Improving the toughness of asphalt binder through adding high-content of crumb tire rubber is an efficient method to solve this problem. Devulcanized rubber modified asphalt binder (DRMA) with different contents (15–40%) of devulcanized rubber (DR) were prepared...
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Applying Fuzzy Logic of Expert Knowledge for Accurate Predictive Algorithms of Customer Traffic Flows in Theme Parks
PublicationThis study analyzes two forecasting models based on the application of fuzzy logic and evaluates their effectiveness in predicting visitor expenditure and length of stay at a popular theme park. The forecasting models are based on a set of more than 600 decision rules constructed in the form of a complex series of IF-THEN statements. These algorithms store expert knowledge. A descriptive instrument that records the individual visitor's...
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Mechanical Properties of Brass under Impact and Perforation Tests for a Wide Range of Temperatures: Experimental and Numerical Approach
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Energy-Saving Mechatronic System for Fatigue Tests of Materials under Variable-Amplitude Proportional Bending and Torsion
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Mathematical Models of Control Systems of Angular Speed of Steam Turbines for Diagnostic Tests of Automatic and Mechatronic Devices
PublicationAccurate modeling of physical processes of many automatics and mechatronics systems is often necessity. In power system such a process is control of angular velocity of power objects during connection to operation in parallel. This process is extremely dynamic. For this reason response of control system depends from changes of many physical parameters (temperature, pressure and flow of the medium, etc.). Precision modeling influences...
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Operation of the Hybrid Photovoltaic-Battery System on the Electricity Market—Simulation, Real-Time Tests and Cost Analysis
PublicationThis paper presents research on a hybrid photovoltaic-battery energy storage system, declaring its hourly production levels as a member of a balancing group submitting common scheduling unit to the day-ahead market. It also discusses the variability of photovoltaic system generation and energy storage response. The major research questions were whether the operation of a hybrid photovoltaic-battery energy storage system is viable...
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Verification of geotechnical numerical simulations by model tests using PIV technique. Part II Numerical Simulation
PublicationPrzedstawiono zakres i wyniki symulacji numerycznych stateczności fundamentów bezpośrednich posadowionych w sąsiedztwie kątowych ścian oporowych. Wyniki symulacji numerycznych zweryfikowano na podstawie wyników badań modelowych z uwzględnieniem techniki PIV przedstawionych w części I niniejszego artykułu. W obliczeniach numerycznych wykorzystano trzy kryteria wytrzymałości gruntu na ścinanie: Coulomba - Mohra, Matsuoki - Nokaiego...
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High-normal blood pressure is associated with increased resting sympathetic activity but normal responses to stress tests
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