Wyszukiwarka
Wyniki wyszukiwania dla: LERAY–SCHAUDER DEGREE
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Electrical measurements of the dewetting of metal thin films
Dane BadawczeIn situ observations of dewetting of thin films is very complicated. One of the method, that helps to observe it, could be electrical measurements. For experiments, thin gold, silver and gold-silver nanoalloy films were deposited by magnetron sputtering method. Films were deposited on a Corning glass substrates. Samples were measured by four point method...
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Fruit Pomace as a Component Shaping the Content of Bioactive Compounds and Nutritional, Health-Promoting (Anti-Diabetic and Antioxidant) of Shortcrust Pastries Sweetened with Sucrose and Erythritol
Dane BadawczeIn this study, an attempt was made to develop shortcrust pastries containing different amounts of chokeberry, apple and blackcurrant pomace (0%, 10%, 30%, 50%), modulating their degree of sweetness via the application of sucrose or erythritol. The obtained products were assessed for their nutritional value (energy value, protein, fats, dietary fibre,...
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The impact of addition of olive oil on thermal degradation of refined rapeseed oil
PublikacjaFats are an important component of the everyday diet and have a significant impact on the proper functioning of human organism. However, during the process of frying chemical transformations take place in the oil; hence fats characterised by high oxidative stability should be given preference. The aim of this work was to determine the quality of rapeseed oil, blended oil, and refined olive oil, all sourced from the domestic market....
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Interval Edge Coloring of Bipartite Graphs with Small Vertex Degrees
PublikacjaAn edge coloring of a graph G is called interval edge coloring if for each v ∈ V(G) the set of colors on edges incident to v forms an interval of integers. A graph G is interval colorable if there is an interval coloring of G. For an interval colorable graph G, by the interval chromatic index of G, denoted by χ'_i(G), we mean the smallest number k such that G is interval colorable with k colors. A bipartite graph G is called (α,β)-biregular...
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The Possibilities of Improving the Fatigue Durabilityof the Ship Propeller Shaft by Burnishing Process
PublikacjaHeavily loaded structural elements operating in a corrosive environment are usuallyquickly destroyed. An example of such an element is a ship propeller operating in a seawaterenvironment. This research presents a fatigue resistance test performed on elements operating inseawater. Different processing parameters applied on the samples in particular were compared withthe specimens whose surface had been burnished differently and...
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Effect of Chitosan Deacetylation on Its Affinity to Type III Collagen: A Molecular Dynamics Study
PublikacjaThe ability to form strong intermolecular interactions by linear glucosamine polysaccharides with collagen is strictly related to their nonlinear dynamic behavior and hence bio-lubricating features. Type III collagen plays a crucial role in tissue regeneration, and its presence in the articular cartilage affects its bio-technical features. In this study, the molecular dynamics methodology was applied to evaluate the effect of...
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Mykola Lukianov mgr
OsobyMykola Lukianov received a B.Sc. and M.Sc degree in Electronics and Communications from the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” in 2018 and 2020 respectively. He is currently a PhD student at the Gdansk University of Technology, Poland and a researcher group member in project SMARTGYsum “Research and Training Network for Smart and Green Energy Systems and Business Models”. His research...
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The performance of ETFs on developed and emerging markets with consideration of regional diversity
PublikacjaThis study evaluates the performance of Exchange-Traded Funds (ETFs) by using various tracking error calculation approaches. The aim of the paper is, on the one hand, an evaluation of the performance of ETFs relative to their benchmarking indexes and, on the other, an endeavour to specify any relationship between this performance and both geographical location and the degree of market development. The research was conducted on...
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Ahmed Lakhdar Kouzou
OsobyPhd Student at Faculty of Electrical and Control Engineering, Gdansk University of Technology . Her main areas of research and interests include he application of meta-heuristic optimization algorithms in electric power systems. He served as temporary researsh assitant at Texas A&M University at Qatar. He received his Bachalor’s degree in Electrical and Electronic Engineering in 2017 from the Institute of Electrical & Electronic...
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Data from the survey on Gdańsk University of Technology graduates' qualifications development - the year 2013.
Dane BadawczeThe dataset includes data from the survey on the Gdańsk University of Technology graduates’ qualifications development. The research refers to graduates from the year 2013. The survey was conducted in 2015, two years after the respondents obtained graduate status. The research sample included 1777 respondents. The study referred to as i.a. to examine...
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Test of the antimicrobial properties against E. coli of the innovative CS-2b preservative.
Dane BadawczeThe dataset contains the results of a single series of determinations of the antimicrobial properties against E. coli of the innovative CS-2 b preservative in the solution of model fluids.During the test, the infected product is inoculated (on chromogenic Coliform Agar) at specified intervals (0 min. [cs2b 0] and after 1 day-24 h of incubation [cs2b...
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Data from the survey on Gdańsk University of Technology graduates' qualifications development - the year 2014
Dane BadawczeThe dataset includes data from the survey on the Gdańsk University of Technology graduates’ qualifications development. The research refers to graduates from the year 2014. The survey was conducted in 2016, two years after the respondents obtained graduate status. The research sample included 2004 respondents. The study referred to as i.a. to examine...
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Test of the antimicrobial properties against Listeria monocytogenes of the innovative CS-2a preservative.
Dane BadawczeThe dataset contains the results of a single series of determinations of the antimicrobial properties against Listeria monocytogenes of the innovative CS-2 a preservative in the solution of model fluids.During the test, the infected product is inoculated (on Oxford Agar) at specified intervals (0 min. [Listeria cs2a 0] and after 1 day-24 h of incubation...
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Topological model of aptitude of the measurement circuits of main subassemblies of an internal combustion engine crankshaft-piston assembly
PublikacjaThe paper presents a topological model allowing to determine the probability of aptitude of the diagnosing system (SDG) individual measuring circuits and also to determine to what degree they influence the assessment of the technical condition of an arbitrary main subassembly of crankshaft-piston assemblies as a diagnosed system (SDN).
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Rendezvous of Distance-Aware Mobile Agents in Unknown Graphs
PublikacjaWe study the problem of rendezvous of two mobile agents starting at distinct locations in an unknown graph. The agents have distinct labels and walk in synchronous steps. However the graph is unlabelled and the agents have no means of marking the nodes of the graph and cannot communicate with or see each other until they meet at a node. When the graph is very large we want the time to rendezvous to be independent of the graph size...
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Edge and Pair Queries-Random Graphs and Complexity
PublikacjaWe investigate two types of query games played on a graph, pair queries and edge queries. We concentrate on investigating the two associated graph parameters for binomial random graphs, and showing that determining any of the two parameters is NP-hard for bounded degree graphs.
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The Impact of Covid-19 on the Performance of Exchange Traded Funds on Developed and Emerging Markets
PublikacjaIn this paper an endeavour was made to evaluate the impact of Covid-19 on the achievement of the investment objectives by selected ETFs in developed and emerging markets. For this purpose, the tracking errors calculated for 18 different ETFs operating on the basis of American, Asian and European stock indexes were analyzed. The time range of the research was selected in such a way as to compare the period before the pandemic(pre-Covid)...
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A Wideband Corrugated Ridged Horn Antenna with Enhanced Gain and Stable Phase Center for X- and Ku-Band Applications
PublikacjaIn this letter, a structure and design procedure of a novel double-flared conical horn antenna with an improved gain and a stable phase center is presented. The antenna incorporates a hybrid ridged and corrugated structure. A double-ridged section is responsible for ensuring a wideband operation, whereas the corrugated section supports the hybrid mode. The antenna impedance bandwidth (VSWR < 2) is 6 GHz to 20 GHz. Excellent performance...
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Approach for Determination of Functioning of Lower Limb Muscles
PublikacjaThe purpose of the study is elaboration of approach for determination of functioning of chosen muscles that are essential for gait performance (Tibialis Anterior, Rectus Femoris, Gastrocnemius Medialis, Biceps Femoris). The scope of the study involves the analysis of the symmetric planar motion performing in the sagittal plane of the body by applying planar multibody model and electromyography signals (EMG) registered over normal...
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Centrifuge modelling of tapered wall jacked into dense sand
PublikacjaA series of static penetration tests of trapezoidal walls in dense Fontainebleau sand were performed in the geotechnical centrifuge at Gustave Eiffel University. The models of wall with three different shapes (straight profile with thickness D=16mm, 0.75 degree and 1.5 degree of taper angle) but with the same volume were used. The soil mass was instrumented with five stress cells located at two levels at 2D, 4D and 6D distance...
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Equivariant Morse equation
PublikacjaThe paper is concerned with the Morse equation for flows in a representation of a compact Lie group. As a consequence of this equation we give a relationship between the equivariant Conley index of an isolated invariant set of the flow given by x˙ = − ∇f(x) and the gradient equivariant degree of ∇f. Some multiplicity results are also presented.
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The Hopf type theorem for equivariant gradient local maps
PublikacjaWe construct a degree-type otopy invariant for equivariant gradient local maps in the case of a real finite-dimensional orthogonal representation of a compact Lie group. We prove that the invariant establishes a bijection between the set of equivariant gradient otopy classes and the direct sum of countably many copies of Z.
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New perspective on the in vivo use of cold stress dynamic thermography in integumental reconstruction with the use of skin-muscle flaps
PublikacjaAmong the problems encountered by plastic surgeons is the reconstruction of defects following tumors. One of the reconstructive options is TRAM flap. Despite that anatomy is well-explored, marginal flap necrosis may develop. To minimize complications imaging examinations was designed to determine the degree of flap perfusion. One of them is the thermographic examination.
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Piotr Szczuko dr hab. inż.
OsobyDr hab. inż. Piotr Szczuko w 2002 roku ukończył studia na Wydziale Elektroniki, Telekomunikacji i Informatyki Politechniki Gdańskiej zdobywając tytuł magistra inżyniera. Tematem pracy dyplomowej było badanie zjawisk jednoczesnej percepcji obrazu cyfrowego i dźwięku dookólnego. W roku 2008 obronił rozprawę doktorską zatytułowaną "Zastosowanie reguł rozmytych w komputerowej animacji postaci", za którą otrzymał nagrodę Prezesa Rady...
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Robotic manipulators, Lab, MiBM, st. I, sem.6 (PG_00053663) 03.2022 Fri
Kursy OnlineThe course Manipulators and Industrial Robots (laboratory) is for students of the 6th semester of a full-time bachelor's degree studies of Mechatronics. The course includes laboratory classes in the field of industrial manipulators - their construction, features, components, control, and modular robots - their programming and models.
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Robotic manipulators, Lab, MiBM, st. I, sem.6 (PG_00053663) 03.2023
Kursy OnlineThe course Manipulators and Industrial Robots (laboratory) is for students of the 6th semester of a full-time bachelor's degree studies of Mechatronics. The course includes laboratory classes in the field of industrial manipulators - their construction, features, components, control, and modular robots - their programming and models.
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Nuclear Power
Kursy OnlineNuclear Power is a course for student II degree in full-time studies at Chemistry Faculty, majoring in Green Technology and Monitoring.
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Robotic manipulators, Lab, MiBM, st. I, sem.6 (PG_00053663) 03.2024 kopia 1
Kursy OnlineThe course Manipulators and Industrial Robots (laboratory) is for students of the 6th semester of a full-time bachelor's degree studies of Mechatronics. The course includes laboratory classes in the field of industrial manipulators - their construction, features, components, control, and modular robots - their programming and models.
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Robotic manipulators, Lab, MiBM, st. I, sem.6 (PG_00053663) 03.2024
Kursy OnlineThe course Manipulators and Industrial Robots (laboratory) is for students of the 6th semester of a full-time bachelor's degree studies of Mechatronics. The course includes laboratory classes in the field of industrial manipulators - their construction, features, components, control, and modular robots - their programming and models.
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In silico epitope prediction of Borrelia burgdorferi sensu lato antigens for the detection of specific antibodies
PublikacjaDespite many years of research, serodiagnosis of Lyme disease still faces many obstacles. Difficulties arise mainly due to the low degree of amino acid sequence conservation of the most immunogenic antigens among B. burgdorferi s.l. genospecies, as well as differences in protein production depending on the environment in which the spirochete is located. Mapping B-cell epitopes located on antigens allows for a better understanding...
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Novel sorptive extraction techniques in bioanalysis evaluated by Blue Applicability Grade Index: The paradigm of fabric phase sorptive extraction and capsule phase microextraction
PublikacjaFabric phase sorptive extraction (FPSE) and capsule phase microextraction (CPME) are two sol-gel derived microextraction techniques that emerged in the last decade towards the minimization of the environmental impact of conventional sample preparation approaches. Complementary to the well-established green metric tools, Blue Applicability Grade Index (BAGI) was recently proposed for the evaluation of method’s practicability. In...
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Aleksandra Parteka dr hab. inż.
OsobyAbout me: I am an associate professor and head of doctoral studies at the Faculty of Management and Economics, Gdansk University of Technology (GdanskTech, Poland). I got my MSc degree in Economics from Gdansk University of Technology (2003) and Universita’ Politecnica delle Marche (2005), as well as MA degree in Contemporary European Studies from Sussex University (2006, with distinction). I received my PhD in Economics...
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Źródła informacji rynkowych przy kształtowaniu nowych produktów
PublikacjaCelem pracy jest przedstawienie stopnia korzystania z różnych źródeł informacji rynkowych przy kształtowaniu nowych produktów przez krajowe przedsiębiorstwa średnio-wysokiej i wysokiej techniki oraz powiązania między rodzajem źródła a wynikami nowych produktów.
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Robotics, Lab, MiBM, st. II, sem.1 (PG_00057380) 03.2022 Thu
Kursy OnlineThe course Robotics (laboratory) is for students of the 1st semester of a full-time Master degree studies of Machine Design. The course includes laboratory classes in the field of industrial manipulators - their construction, features, components, control, and modular robots - their programming and models.
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Analysis of the design development of the sliding table saw spindles
PublikacjaProducers of sliding table saws constantly strive for improvement in sawing accuracy. One of the method is an upswing in a spindle behavior, since, it affects to a large degree sawing effects. The design development of sliding table saw spindles during the last quarter-century is presented. The spindle system of the modernized spindle of the sawing machine Fx550 is described.
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Module structure in Conley theory with some applications
PublikacjaA multiplicative structure in the cohomological versjon of Conley index is described . In the case of equivariant flows we apply the normalization procedure known from equivariant degree theory and we propose a new continuation invariant. The theory is then applied to obtain a mountain pass type theorem. Another application is a result on multiple bifurcations for some elliptic PDE.
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A BRIEF REVIEW AND COMPARISON OF SELECTED EXPERIMENTAL METHODS FOR MEASURING NATURAL FREQUENCIES OF CIRCULAR SAW BLADES
PublikacjaDifferent methods for the empirical determination of the natural frequencies of circular saw blades are presented. Stationary methods, such as the harmonic and impulse tests, are discussed and the results of related comparison are given. The comparison of the methods revealed their degree of practical usefulness and their accuracy in determining natural frequencies. A combination of specific methods is proposed, which should allow...
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The AFM topographic measurements of the surface heterogeneity of iron hexacyanoferrate on a steel surface
Dane BadawczeMeasurements in semi-contact mode. NTEGRA Prima (NT-MDT) device. NSG 01 probe.
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Wireless LAN with noncooperative anonymous stations: QOS provisioning via war of attrition
PublikacjaMAC-layer QoS provision necessitates an admission scheme to grant a requested QoS notwithstanding subse-quent requests. For an ad hoc WLAN with anonymous stations, we assume a degree of power awareness to propose a session- rather than frame-level bidding for bandwidth. Next we analyze the underlying Bayesian war of attrition game.
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Monitoring of concrete curing in extradosed bridge supported by numerical simulation
PublikacjaThe paper describes a mathematical model of concrete curing taking into account kinetics of setting reactions. The numerical model is implemented in the author’s program that was used to monitor thermal effects recorded in the concrete bottom plate of the extradosed bridge. Numerical approach was verified by experimental measurements and used for assessment of the current compressive strength due to degree of hydration of fresh...
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Ocena wpływu dodatku oliwy z oliwek na degradację termiczną rafinowanego oleju rzepakowego
PublikacjaTłuszcze jadalne to ważny składnik diety człowieka. Mają one znaczący wpływ na prawidłowe funkcjonowanie ludzkiego organizmu. Podczas smażenia olej podlega przemianom chemicznym, dlatego spożywane tłuszcze powinny charakteryzować się jak największą stabilności oksydacyjnej. Celem prowadzonych badań było określenie jakości olejów rzepakowego, mieszanego oraz rafinowanej oliwy z oliwek, pochodzących z rynku krajowego. Podczas badań...
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Anna Baj-Rogowska dr
OsobyAnna Baj-Rogowska zatrudniona jest na stanowisku adiunkta w Katedrze Informatyki w Zarządzaniu (Politechnika Gdańska, Wydział Zarządzania i Ekonomii). Jej wyższa edukacja związana jest z Uniwersytetem Gdańskim, gdzie ukończyła magisterskie studia informatyczne, studia doktoranckie i następnie uzyskała stopień naukowy doktora nauk ekonomicznych w zakresie nauk o zarządzaniu (Katedra Informatyki Ekonomicznej na Wydziale Zarządzania...
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Collagen Type II—Chitosan Interactions as Dependent on Hydroxylation and Acetylation Inferred from Molecular Dynamics Simulations
PublikacjaChitosan–collagen blends have been widely applied in tissue engineering, joints diseases treatment, and many other biomedical fields. Understanding the affinity between chitosan and collagen type II is particularly relevant in the context of mechanical properties modulation, which is closely associated with designing biomaterials suitable for cartilage and synovial fluid regeneration. However, many structural features influence...
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Thematic Areas in the Polish Countryside and Their Role in Local Development
PublikacjaThe article defines the phenomenon of space thematisation with regards to rural areas in Poland. The typology of thematic spaces and criteria of their comparative description have been proposed. Thematic villages, home gardens, amusement parks and housing estates have been distinguished. They have been compared in terms of spatial availability, the degree of user participation and the commercial vs. non-commercial creation purpose....
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Efosa Ojomo Masters Degree
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Bifurcation of equilibrium forms of an elastic rod on a two-parameter Winkler foundation
PublikacjaWe consider two-parameter bifurcation of equilibrium states of an elastic rod on a deformable foundation. Our main theorem shows that bifurcation occurs if and only if the linearization of our problem has nontrivial solutions. In fact our proof, based on the concept of the Brouwer degree, gives more, namely that from each bifurcation point there branches off a continuum of solutions.
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Burkitt's tumour - Female, 6 - Tissue image [10060730015617891]
Dane BadawczeThis is the histopathological image of TONSIL 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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Burkitt's tumour - Female, 6 - Tissue image [10060730015613731]
Dane BadawczeThis is the histopathological image of TONSIL 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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Projekt optymalnego łuku poziomego jako element nauczania kształtowania układów geometrycznych toru
PublikacjaAspekt geometryczny stanowi ważny element w nauczaniu projektowania dróg szynowych na studiach 1-go i 2-go stopnia na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej. Podstawowym, najczęściej spotykanym w praktyce elementem linii kolejowej w planie jest łuk poziomy z krzywymi przejściowymi. Z tego względu na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej wdrożono ćwiczenie projektowe ujmujące to...
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Degradation of modified TPS in natural and industrial compost
PublikacjaThe aim of the study was to determine in the pilot studies the degree of decomposition of modified by us thermoplasic starch (potato starch).Commercial and new obtained by us foils were tested in an open roofing at normal weather conditions. The most visible changes were observed in TPS modified by epoxidized soybean oil and arabic gum contrary to commercial foils where there was no mass change observed.