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Wyniki wyszukiwania dla: WOREK DORSZOWY
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Investigation of solid polymer electrolyte gas sensor with different electrochemical techniques
PublikacjaIn this work solid polymer electrolyte (SPE) amperometric sulphur dioxide sensor is investigated. Nafion was used as a membrane electrode and 1M sulphuric acid as an internal electrolyte. Sensor response to sulphur dioxide was measured. Besides traditional constant voltage amperometry also different electrochemical techniques were used. Results obtained by these methods are compared.
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Secure access control and information protection mechanisms in radio system for monitoring and acquisition of data from traffic enforcement cameras
PublikacjaThe study presents the architecture of the Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short: RSMAD), particularly concerning access control and protection of confidential data. RSMAD security structure will be discussed in relation to network security issues. Additionally, the paper presents the results of the work associated with the modelling of potential threats to system security.
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CENTRAL-FORCE DECOMPOSITION OF THE TERSOFF POTENTIAL
PublikacjaCentral forces play important role in the analysis of results obtained with particle simulation methods, since they allow evaluating stress fields. In this work we derive expressions for a central-force decompositon of the Tersoff potential, which is often used to describe interatomic interactions in covalently bonded materials. We simplify the obtained expressions and discuss their properties.
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Influence of the internal electrolyte composition on amperometric sulphur dioxide sensor properties
PublikacjaIn this work investigation of an amperometric sulphur dioxide sensor with a liquid electrolyte, a mercury sulphate reference electrode and solid polymer electrolyte (Nafion) covered with gold as a working electrode properties is presented. The main goal of this research is to determine the influence of internal electrolyte composition on the sensor properties. Sensor filled with 1M and 5M sulphuric acid has been studied.
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PANTOGRAPH AS AN EXAMPLE OF THE USE OF GEOMETRIC TRANSFORMATIONS IN CONSTRUCTING OF OLD DRAWING INSTRUMENTS = PANTOGRAF JAKO PRZYKŁAD ZASTOSOWANIA PRZEKSZTAŁCEŃ GEOMETRYCZNYCH W KONSTRUOWANIU DAWNYCH PRZYRZĄDÓW KREŚLARSKICH
PublikacjaThe article describes the pantograph, considered to be the ancestor of today's photocopier. This instrument draws the copies, enlarges or reduces any figure. The author presents its genesis, the scope of application in the past, explains the structure and geometrical transformations used during its action. Based on a specific example, the work illustrates practical application of geometry in the past inventions for designing.
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Influence of nanoparticle concentration on convective heat transfer of water-Al2O3 nanofluids inside horizontal tubes
PublikacjaThis work presents preliminary results of the experimental investigation of the forced convection heat transfer of water-Al2O3 nanofluids inside stainless steel tube with 8 mm internal diameter and 2000 mm length. Nanoparticles were tested at the concentrations of 0.01%, 0.1%, 1% and 5% by weight and the Reynolds number range encompasses laminar as well as turbulent flows.
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Games and play with light in architecture
PublikacjaThe paper deals with the issue of the influence of daylight on the creation of architecture in the view of designers` play with light in the architectural space. Using the examples of contemporary realizations of some art museums, the work demonstrates the impact of exploration and experimentation conducted by the creators of visual arts on the design styles and architectural solutions. It also reveals the historical continuity...
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Positive solutions to advanced fractional differential equations with nonlocal boundary conditions
PublikacjaWe study the existence of positive solutions for a class of higher order fractional differential equations with advanced arguments and boundary value problems involving Stieltjes integral conditions. The fixed point theorem due to Avery-Peterson is used to obtain sufficient conditions for the existence of multiple positive solutions. Certain of our results improve on recent work in the literature.
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Wpływ sposobu wytwarzania na właściwości warstwowych kompozytów polimerowych w środowisku wodnym
PublikacjaPrzedstawiono wyniki badań wytrzymałości na zginanie, ściskanie i dynamicznych charakterystyk absorpcji energii udaru o niskiej energii kompozytów epoksydowych wzmocnionych 10 warstwami tkaniny aramidowo-szklanej, utwardzonych w próżni (worek próżniowy) lub na powietrzu. Badano próbki w stanie suchym i po nasyceniu wodą. Stwierdzono znaczną degradację właściwości obu materiałów w stanie mokrym. Laminaty utwardzane w powietrzu wykazały...
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Urządzenie do biopsji tkanki miękkiej, zwłaszcza ludzkiej
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Urządzenie do biopsji tkanki miękkiej, zwłaszcza ludzkiej
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Urządzenie do biopsji tkanki miękkiej, zwłaszcza ludzkiej
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Muhammad Danish Ali MSc.
OsobyMuhammad Danish Ali is a dedicated researcher ( Google scholar h index 12) specializing in energy Storage Materials at Silesian University of Technology in Katowice, Poland. He is completing his PhD under the supervision of Prof. Anna Starczewska from Silesian University of Technology, Katowice, Poland. With a solid academic foundation in material science from the University of the Punjab, Lahore, he has focused his research on...
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Mahaveer Mahaveer
OsobyI am a PhD candidate in Civil Engineering, Geodesy, and Transport at the Department of Geotechnical and Hydraulic Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology (Gdańsk University of Technology), Poland. My research is focused on optimizing hydrodynamic vortex separators for enhanced separation. My current research builds on my experiences from my Master of Engineering research in...
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Jan Sierzputowski mgr inż.
OsobyJan Sierzputowski is a student at the Doctoral School of the Gdańsk University of Technology. His main interests are designing sailing yachts, improving the design process and human-centred design. In his professional work, he deals with sails, masts, rigging, deck equipment and its optimization for the end user. He graduated from engineering and master's studies at the Gdańsk University of Technology at the Faculty of Shipbuilding...
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Emotional distress, burnout and sense of safety during the COVID-19 pandemic in teachers after the reopening of schools
PublikacjaThe COVID-19 pandemic is having a significant impact on people's psychological well-being and mental health. This study aimed to identify factors linked to emotional distress, burnout and sense of safety in teachers related to the reopening of Polish schools after lockdown, remote work, and the holiday period between March and August 2020. A total of 1,286 teachers from different educational institutions participated in the...
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Toward Robust Pedestrian Detection With Data Augmentation
PublikacjaIn this article, the problem of creating a safe pedestrian detection model that can operate in the real world is tackled. While recent advances have led to significantly improved detection accuracy on various benchmarks, existing deep learning models are vulnerable to invisible to the human eye changes in the input image which raises concerns about its safety. A popular and simple technique for improving robustness is using data...
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(Lost) Pride and Prejudice. Journalistic Identity Negotiation Versus the Automation of Content
PublikacjaThe objective of our research was to broaden the knowledge regarding the relationship between the work of journalists and their professional identity, and, in particular, to identify the attitudes of this professional group towards algorithmic content creation under conditions of liminality. Previously, the implementation of the technology of algorithmic content creation by media organisations was associated primarily with financial...
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A probabilistic-driven framework for enhanced corrosion estimation of ship structural components
PublikacjaThe work proposes a probabilistic-driven framework for enhanced corrosion estimation of ship structural components using Bayesian inference and limited measurement data. The new approach for modelling measurement uncertainty is proposed based on the results of previous corrosion tests that incorporate the non-uniform character of the corroded surface of structural components. The proposed framework's basic features are outlined,...
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Vegetable derived-oil facilitating carbon black migration from waste tire rubbers and its reinforcement effect
PublikacjaThree dimensional chemically cross-linked polymer networks present a great challenge for recycling and reutilization of waste tire rubber. In this work, the covalently cross-linked networks of ground tire rubber (GTR) were degraded heterogeneously under 150 °C due to the synergistic effects of the soybean oil and controlled oxidation. The degradation mechanism was discussed using Horikx theory and Fourier transformation infrared...
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Communication and Documentation Practices in Agile Requirements Engineering: A Survey in Polish Software Industry
PublikacjaRequirements engineering, system analysis and other analytical activities form the basis of every IT project. Such activities are not clearly defined in Agile development methods, but it does not mean that they are absent in an agile project. The aim of our work was to determine which practices related to requirements-related communication and which requirements documenting techniques are used in agile software projects. For this...
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Estimation of zero buoyancy of the batyscaphe. Pneumatic buoyancy control of the bathyscaphe
PublikacjaThe subjects of this work are matters concerning the batyscaphe designed and constructed by the Scientific Circle of Young Constructors (SCoYC) acting at the Faculty of Technical Sciences of the Olsztyn University of Warmia and Mazury.The goal od the remote-controlled batyscaphe is an underwater exploration of water resorvoirs in Poland. Design and construction of the unmanned watercraft, also known as a batyscaphe, required the...
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Application of Stirling Engine Type Alpha Powered by the Recovery Energy on Vessels
PublikacjaThe Stirling engine is a device, in which thermal energy is transformed into mechanical without a contact between the heat carrier, and the working gas closed in the engine. Mentioned feature makes this type of engine very attractive for the use of the recovery energy, taken from other heat devices. One of the potential applications of Stirling engines is the use of thermal energy generated in the ship's engine room for producing...
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Effect of sintering temperature on electrochemical performance of porous SrTi1-xFexO3-δ (x = 0.35, 0.5, 0.7) oxygen electrodes for solid oxide cells
PublikacjaThis work evaluates the effects of the sintering temperature (800 °C, 900 °C, 1000 °C) of SrTi1-xFexO3-δ (x = 0.35, 0.5, 0.7) porous electrodes on their electrochemical performance as potential oxygen electrode materials of solid oxide cells. The materials were prepared by a solid-state reaction method and revealed the expected cubic perovskite structure. After milling, the powders were characterised by a sub-micrometre particle...
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High-density Polyethylene - Expanded Perlite Composites: Structural Oriented Analysis of Mechanical and Thermomechanical Properties
PublikacjaAs part of this work, research was carried out on the effect of the addition of expanded perlite (PR) on the mechanical and thermomechanical properties of high-density polyethylene (PE) composites. Composites containing from 1 to 10 wt% of the inorganic filler were produced. Polyethylene-based composites manufactured by twin-screw extrusion and formed in the compression molding process were subjected to mechanical, thermomechanical,...
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Modelization of Nutrient Removal Processes at a Large WWTP Using a Modified ASM2d Model
PublikacjaThe biodegradation of particulate substrates starts by a hydrolytic stage. Hydrolysis is a slow reaction and usually becomes the rate limiting step of the organic substrates biodegradation. The objective of this work was to evaluate a novel hydrolysis concept based on a modification of the activated sludge model (ASM2d) and to compare it with the original ASM2d model. The hydrolysis concept was developed in order to accurately...
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CPTU/DMT control of heavy tamping compaction of sands
PublikacjaHeavy tamping compaction method in cohesionless alluvial soil was evaluated with CPTU and DMT tests. Some examples of interpretation of soundings in pre-treated and compacted sands are given. The compaction work was performed in two stages. Compaction control was performed after each stage of tamping. Additional tests were performed two weeks after the compaction works completion to study the set-up effect. While typical increase...
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Rough Sets Applied to Mood of Music Recognition
PublikacjaWith the growth of accessible digital music libraries over the past decade, there is a need for research into automated systems for searching, organizing and recommending music. Mood of music is considered as one of the most intuitive criteria for listeners, thus this work is focused on the emotional content of music and its automatic recognition. The research study presented in this work contains an attempt to music emotion recognition...
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Investigation of Narrow Transverse and Longitudinal Electrostatic Precipitators
PublikacjaDiesel engines emit fine particles, which are harmful to human and animal health. There are several methods for decrease particulate emission from a diesel engines, but up to now, these methods are not enough effective or very expensive. An electrostatic precipitation was proposed as an alternative method for control of a diesel particulate emission. Therefore, narrow electrostatic precipitators (ESPs) have become a subject of...
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Applicability of Emotion Recognition and Induction Methods to Study the Behavior of Programmers
PublikacjaRecent studies in the field of software engineering have shown that positive emotions can increase and negative emotions decrease the productivity of programmers. In the field of affective computing, many methods and tools to recognize the emotions of computer users were proposed. However, it has not been verified yet which of them can be used to monitor the emotional states of software developers. The paper describes a study carried...
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Mariusz Deja dr hab. inż.
OsobyAdiunkt w Katedrze Technologii Maszyn i Automatyzacji Produkcji. Ukończył w 1993 roku studia wyższe magisterskie na Wydziale Mechanicznym Politechniki Gdańskiej, kierunek: Mechanika i Budowa Maszyn, specjalność: Projektowanie Procesów Technologicznych. Po ukończeniu studiów podjął pracę w Katedrze Technologii Maszyn i Automatyzacji Produkcji, a jego podstawowy obszar działalności naukowej związany był z technologią docierania...
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Identification of defected sensors in an array of amperometric gas sensors
PublikacjaPurpose Amperometric gas sensors are commonly used in air quality monitoring in long-term measurements. Baseline shift of sensor responses and power failure may occur over time, which is an obstacle for reliable operation of the entire system. The purpose of this study is to check the possibility of using PCA method to detect defected samples, identify faulty sensor and correct the responses of the sensor identified as faulty. Design/methodology/approach In...
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Piezoelectric Transducer for Mechanical Assessment of Soft Tissues. Concept, Implementation and Analysis
PublikacjaThe main goal of this work was following: preparation of a new concept, implementation and analysis of the piezoelectric resonant sensor/actuator for measuring the aging process of human skin. The research work has been carried out in the framework of cooperation between the INP-ENSEEIHT-LAPLACE, Toulouse, France, and at the Gdansk University of Technology, Faculty of Electrical and Control Engineering, Research Group of...
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Governmental supported space internship programmes in new ESA member states - Polish perspective
PublikacjaOver last 10 years ve new countries - Czech Republic, Romania, Poland, Hungary and Estonia - have joined the European Space Agency. These countries are currently experiencing a considerable increase of space activities aiming to take part in the European and Global space market. New companies, start-ups and consortiums have been created alongside oces of foreign entities have opened their premises in these countries. All of them...
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Individual Resources and Intercultural Interactions
PublikacjaThe work environment in multinational corporations (MNCs) is specific and demanding including intercultural interactions with co-workers and clients and using a foreign language. Some individual resources can help in dealing with these circumstances. Individual resources refer to personal dispositions, competencies and prior experiences. With regard to previous studies, a caravan of personal resources, namely Psychological Capital...
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The future of the logistician education in Poland and Ukraine: comparative analysis of the student’s opinion
PublikacjaBackground: A professional future is the next logical step after a student completes their chosen degree course. More frequently, even during their studies, young people seek opportunities to participate in various conferences, training courses, internships, work placements, and to travel abroad, etc. All of this has one main goal - to increase the student's attractiveness as a potential employee on the labour market. Thus, it...
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Periodic solutions of Lagrangian systems under small perturbations
PublikacjaIn this paper we prove the existence of mountain pass periodic solutions of a certain class of generalized Lagrangian systems under small perturbations. We show that the found periodic solutions converge to a periodic solution of the unperturbed system if the perturbation tends to 0. The proof requires to work in a rather unusual (mixed) Orlicz–Sobolev space setting, which bears several challenges.
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Modification of current-voltage characteristics of planar organic systems by nm-thick interlayer
PublikacjaEffect of nm-thick interlayer of copper phthalocyanine (CuPc) or perylene dye (MePTCDI) on current-voltage characteristics of planar organic systems is discussed in the work. The MePTCDI layer strongly limits injection of holes from ITO into CuPc, while CuPc limits injection of electrons from ITO into MePTCDI. In the systems with CuPc/MePTCDI heterojunction an explicit photovoltaic effect occurs.
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Współczesna Inżynieria Biomedyczna
Kursy OnlinePrzedmiot wprowadzający we współczesne rozwiązania i trendy w Inżynierii biomedycznej
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Differential Signals From TNFα-Treated and Untreated Embryos in Uterine Tissues and Splenic CD4+ T Lymphocytes During Preimplantation Pregnancy in Mice
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An integrated DNA and RNA variant detector identifies a highly conserved three base exon in the MAP4K5 kinase locus
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The effects of p53 gene inactivation on mutant proteome expression in a human melanoma cell model
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Bezpieczeństwo eksploatacyjne budynków mieszkalnych zrealizowanych w technologii prefabrykowanej na terenie Trójmiasta
PublikacjaW artykule przedstawiono szczegółówoa analiże stanu technicznego budynków mieszkalnych zrealizowanych w technologii wielkoblokowej i wielkopłytowej na terenie obecnego województwa pomorskiego, realizowanych według regionalnego Sytemu Budownictwa (budynki Morek, MBY-110z) oraz Zunifikowanych Systemów Budownictwa (system szczeciński, Wk-70, WUFT). przedstawiono stan istniejący obiektów oraz określono kierunki działań mających na...
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Anita Richert-Kaźmierska dr inż.
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Gesture recognition framework for multimedia content viewer controlling
PublikacjaIn the paper a system for controlling a multimedia content viewer by hand gestures is presented. First, selected methods used for gesture recognition are described. Two different application cases of the system, i.e. for multimedia presentation purposes and for multimedia content viewing are outlined. Moreover, a proposal of improvement of the system combining these approaches is also given. The system work cycle is reviewed. The...
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Thermal energy storage using stearic acid as PCM material
PublikacjaThis work presents an experimental study of thermal energy storage by use of PCM. The aim of the study was to establish the influence of different inlet temperature of heat transfer fluid (HTF) and different Reynolds number of HTF on intensity of charging process. The PCM used in this study was stearic acid and water was used as HTF. A copper helical coil mounted in cylindrical container served as a heat transfer surface.
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SIMPLIFIED MODELING OF STRESS AND DEFLECTION LIMIT STATES OF UNDERGROUND TANKS
PublikacjaFuel tanks are designed with regard to standard actions and operating conditions. The work analyses the impact of corrosion and other means to variation of stresses and deformation of a horizontal underground tank shell. The computations are preliminary. Due to the long computational time of the entire tank the analysis is restricted to its part only. The full analysis is bound to assess structural reliability, further allowing...
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Koncepcja Smart Cities - obszar Smart Environment
PublikacjaThe Smart Cities Concept– Smart Environment. The paper concentrates on the possibilities of checking the extent to which cities meet the smart city concept. The presented concept concentrates on one of the main smart cities characteristic: Smart Environment. This paper is a result of joint work of specialist from two diff erent areas: management and environmental protection. The interdisciplinary character of the paper is characteristic...
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Spectroscopic wireless sensor of hematocrit level
PublikacjaAn optical method for hematocrit measurement is presented. The sensor, designed and developed by authors, consists of a spectroscopic set-up and a microcontroller. The work of the sensor is based on measurement of intensity of two selected spectral bands. Tests confirmed the ability of the sensor to determine the hematocrit level with appropriate measurement accuracy. Measurement results can be transmitted via wireless module to...
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Managing Virtual Teams: The Three Dimensions Scope
PublikacjaDue to globalisation and economic reasons the number of people working as a team in a virtual environment is increasing. Although virtual team can outperform teams working in a traditional environment still many managers face difficulties in achieving this goal. This article describes the idea of a system that would support knowledge management in virtual teams focusing on three dimensions of virtual work: location, organisation,...