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System setup and software for cyclic, staircase and square wave voltammetry measurements
PublikacjaHardware dedicated for electrochemical measurement sometimes does not allow performing certain voltammetry experiments. Staircase and square wave voltammetry, techniques which have many advantages comparing with standard voltammetric techniques, are rarely implemented in software controlling electrochemical measuring equipment. These methods, however, can be relatively easy realized with some addition...
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Influence of material properties of charge on electrical parameters of induction heating setup
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SETI-1 - system wspomagający zarządzanie Wydziałem Elektroniki, Telekomunikacji i Informatyki Politechniki Gdańskiej
PublikacjaW artykule przedstawiono założenia projektowe oraz koncepcję architektury systemu SETI-1, przeznaczonego do wspomagania zarządzania Wydziałem ETI PG. Artykuł stanowi wstęp do serii artykułów opisujących szczegółowo poszczególne komponenty systemu oraz aspekty technologiczne budowy systemu. Opisano założenia przyjete na poczatku projektu, architekturę logiczną i fizyczną, stan aktualny budowy systemu, aspekty wdrożeniowe oraz perspektywy...
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Developing sets of experience knowledge structure
PublikacjaW pracy omówiono zasady tworzenia opisu zwanego zbiorem doświadczeń tworzonego w celu reprezentacji wiedzy
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Minimal double dominating sets in trees
PublikacjaWe provide an algorithm for listing all minimal double dominating sets of a tree of order $n$ in time $\mathcal{O}(1.3248^n)$. This implies that every tree has at most $1.3248^n$ minimal double dominating sets. We also show that this bound is tight.
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Minimal 2-dominating sets in Trees
PublikacjaWe provide an algorithm for listing all minimal 2-dominating sets of a tree of order n in time O(1.3247^n). This leads to that every tree has at most 1.3247^n minimal 2-dominating sets. We also show that thisbound is tight.
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Reconfiguring Minimum Dominating Sets in Trees
PublikacjaWe provide tight bounds on the diameter of γ-graphs, which are reconfiguration graphs of the minimum dominating sets of a graph G. In particular, we prove that for any tree T of order n ≥ 3, the diameter of its γ-graph is at most n/2 in the single vertex replacement adjacency model, whereas in the slide adjacency model, it is at most 2(n − 1)/3. Our proof is constructive, leading to a simple linear-time algorithm for determining...
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Database of speech and facial expressions recorded with optimized face motion capture settings
PublikacjaThe broad objective of the present research is the analysis of spoken English employing a multiplicity of modalities. An important stage of this process, discussed in the paper, is creating a database of speech accompanied with facial expressions. Recordings of speakers were made using an advanced system for capturing facial muscle motion. A brief historical outline, current applications, limitations and the ways of capturing face...
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“OUT OF PLACE” IN THE CITY: DEVELOPMENT OF SOCIOSPATIAL DISORDER SENSITIVITY SCALE IN URBAN SETTINGS
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Institutional Settings and their Impact on the IPO Activity: An Exploratory Study Based on Qualitative Modelling
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Mitigating Time-Constrained Stolen-Credentials Content Poisoning in an NDN Setting
PublikacjaNDN is a content-centric networking architecture using globally addressable information objects, created by publishers and cached by network nodes to be later accessed by subscribers. Content poisoning attacks consist in the substi-tution by an intruder publisher of bogus objects for genuine ones created by an honest publisher. With valid credentials stolen from an honest publisher, such attacks seem unstoppa-ble unless object...
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Global value chains and wages under different wage setting mechanisms
PublikacjaThis study examines whether, and how, differences in wage bargaining schemes shape the relationship between global value chains (GVCs) and the wages of workers while considering both GVC participation and position in GVC. Our dataset is derived from the European Structure of Earnings Survey (SES), containing employee–employer data from 18 European countries, merged with sectoral data from the World Input-Output Database (WIOD)....
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A remark on singular sets of vector bundle morphisms
PublikacjaIf characteristic classes for two vector bundles over the same base space do not coincide, then the bundles are not isomorphic. We give under rather common assumptions a lower bound on the topological dimension of the set of all points in the base over which a morphism between such bundles is not bijective. Moreover, we show that this set is topologically non-trivial.
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The model of end-to-end call setup time calculation for Session Initiation Protocol
PublikacjaEnd-to-end call setup delay is one of the most important grade of service (GoS) parameters for VoIP networks with Session Initiation Protocol (SIP). A typical subscriber wants to have a connection established as soon as possible. From the operator's perspective call setup time is also crucial because he needs to know how probability of successful packet transmission on SIP links is related to a call setup delay. Then he can make...
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High-Resolution, Broad-Range Detection Setup for Polarimetric Optical Fiber Sensors
PublikacjaA common-path polarization interferometer using a Wollaston prism and an area detector for the measurement of retardation or optical path difference is presented. Employing a moderate-resolution 1280 by 1024 pixel monochrome camera, it offers a measurement range of approximately 780 radians at 830 nm and 1350 radians at 515 nm while maintaining a high measurement resolution. Retardation introduced by a zero-order waveplate or a...
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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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Generalized Dold sequences on partially-ordered sets
PublikacjaDold sequences constitute an important class of integer sequences that play an important role in combinatorics, number theory, topology and dynamical systems. We generalize the notion of Dold sequence for the case of partially ordered sets and describe their properties. In particular we give two alternative descriptions of generalized Dold sequences: by some class of elementary sequences as well as by different...
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The assessment of load-settlement curve for Atlas piles correlated with CPT tests
PublikacjaRacjonalne stosowanie pali przemieszczeniowych typu Atlas wymaga analitycznej oceny pełnej krzywej obciążenie - osiadanie. W pracy przedstawiono możliwości wykorzystania metody funkcji transformacyjnych t-z (dla pobocznicy) oraz q-z (dla podstawy) dla oceny krzywej osiadania. Jednostkowe graniczne opory na pobocznicy, tmax, oraz pod podstawą, gf, określono na podstawie metody bezpośredniej, wykorzystując opory stożka sondy, qc....
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Environmental Conditions of Settlement of the Danubian Communities in the Northern Foreland of the Sandomierz Upland
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The Teutonic crusade in Prussia: reconstruction of a medieval fortified settlement complex at Unisław
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Assessment of Alterations in Settlement Patterns of Agricultural Landscape in the Example of Kashubia in Poland
PublikacjaTraditional agricultural landscapes are heavily exposed to change due to their relatively low agricultural productivity. However, they represent cultural values of great importance in maintaining the resilience of the environment and society. Although their cultural potential is important for sustainable development, it is still insufficiently recognized. The article fills this gap by examining old farmstead buildings as a distinguishing...
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Acoustic verification on onomatopoeic sets in contrastive approach
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Acoustic verification on onomatopoeic sets in contrastive approach
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Clothing sets with thermoregulation function for mine rescuers
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Accoustic verification of onomatopoeic sets in contrastive approach
PublikacjaPraca relacjonuje efekty prób wykorzystania technik cyfrowego przetwarzania sygnału mowy dla zaspokojenia specyficznych potrzeb nauk humanistycznych, które, ograniczając się wyłącznie do tra-dycyjnie stosowanego warsztatu badawczego, napotykają współcześnie na bariery znacznie blokują-ce oczekiwany postęp. Omówiono proces badawczy, który służyć ma językoznawcom dokonującym porównań wyrażeń dźwiękonaśladowczych odnajdywanych w odmiennych...
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Trees having many minimal dominating sets
PublikacjaWe provide an algorithm for listing all minimal dominating sets of a tree of order n in time O(1.4656^n). This leads to that every tree has at most 1.4656^n minimal dominating sets. We also give an infinite family of trees of odd and even order for which the number of minimal dominating sets exceeds 1.4167^n, thus exceeding 2^{n/2}. This establishes a lower bound on the running time of an algorithm for listing all minimal dominating...
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Analyzing sets of phylogenetic trees using metrics
PublikacjaThe reconstruction of evolutionary trees is one of the primary objectives in phylogenetics. Such a tree represents historical evolutionary relationships between different species or organisms. Tree comparisons are used for multiple purposes, from unveiling the history of species to deciphering evolutionary associations among organisms and geographical areas. In this paper, we describe a general method for comparing phylogenetictrees...
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Direction of Changes in the Settlements for Prosumers of Photovoltaic Micro-Installations: The Example of Poland as the Economy in Transition in the European Union
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A study HIPERLAN-type noncooperative medium access control setting in a wireless LAN
PublikacjaDla dostępu MAC przeanalizowano strategię określania długości transmisji w fazie eliminacji zakładając indywidualną optymalizację uzyskanego pasma komunikacyjnego. Zaproponowano różne warianty polityki wyłaniania zwycięzcy eliminacji, mające na celu wyrównanie szans stacji kooperacyjnych i niekooperacyjnych.
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The Way One Defines Specification Matters: On the Performance Criteria for Efficient Antenna Optimization in Aggregated Bi-Objective Setups
PublikacjaDesign of antenna structures for real-world applications is a challenging task that often involves addressing multiple design requirements at a time. Popular solution approaches to this class of problems include utilization of composite objectives. Although configuration of such functions has a significant effect on the cost and performance of the optimization, their specific structure is normally determined based on engineering...
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Influence of Exhaust System Setup on Working Zone Pollution by Dust during Sawing of Particleboards
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A new approach to β-decays studies impacting nuclear physics and astrophysics: The PANDORA setup
PublikacjaTheory predicts that lifetimes of β-radionuclides can change dramatically as a function of their ionization state. Experiments performed in Storage Rings on highly ionized atom have proven nuclei can change their beta decay lifetime up to several orders of magnitude. The PANDORA (Plasmas for Astrophysics, Nuclear Decay Observation and Radiation for Archaeometry) experiment is now conceived to measure, for the first time, nuclear...
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Forecasting of railway track tamping based on settlement of sleepers using fuzzy logic
PublikacjaThe sleepers in a railway track transfer vertical, transverse and longitudinal loads to the track ballast and subgrade. The sleepers allow for keeping the distance between the rails constant. The thickness of ballast should be between 16 and 35 cm depending on the design standard of the track, and it should be densified where the ballast supports the sleeper. The exploitation causes contamination of the ballast, crushing the material...
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Calculation of lead settlement curve based on CPT test results and Auger Piles.
PublikacjaPrzedstawiono wykorzystanie wyników statycznego sondowania CPT do określenia pełnej krzywej osiadania, aż do obciążenia granicznego. Wykorzystano wyniki badań statycznych dla 23 wierconych pali wielkośrednicowych. Przedstawiono zależności korelacyjne bazujące na analizie statystycznej.
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Example of practical use of vibration measurement results - study of settlement of the Wisłoujście Tower
PublikacjaW pracy przedstawiono wyniki identyfikacji parametrów posadowienia wieży Twierdzy Wisłoujście. Badanie oparto na zidentyfikowanych w pomiarach częstotliwościach drgań swobodnych wieży. Przyjęto prosty model dynamiczny obiektu, dobrze opisujący jego zachowanie.
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Evolutionary Sets of Safe Ship Trajectories: Evaluation of Individuals
PublikacjaThe paper presents a description of the evaluation phase of the Evolutionary Sets of Safe Ship Trajectories method. In general, the Evolutionary Sets of Safe Ship Trajectories method combines some of the assumptions of game theory with evolutionary programming and finds an optimal set of cooperating trajectories of all ships involved in an encounter situation. While developing a new version of this method, the authors decided to...
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Evolutionary Sets of Safe Ship Trajectories: Evaluation of Individuals
PublikacjaThe paper presents a description of the evaluation phase of the Evolutionary Sets of Safe Ship Trajectories method. In general, the Evolutionary Sets of Safe Ship Trajectories method combines some of the assumptions of game theory with evolutionary programming and finds an optimal set of cooperating trajectories of all ships involved in an encounter situation. While developing a new version of this method, the au-thors decided...
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Customized crossover in evolutionary sets of safe ship trajectories
PublikacjaThe paper presents selected aspects of evolutionary sets of safe ship trajectories-a method which applies evolutionary algorithms and some of the assumptions of game theory to solving ship encounter situations. For given positions and motion parameters of the ships, the method finds a near optimal set of safe trajectories of all ships involved in an encounter. The method works in real time and the solutions must be returned within...
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COLREGS compliance in Evolutionary Sets of Cooperating Ship Trajectories
PublikacjaIn general, Evolutionary Sets of Cooperating Ship Trajectories combine some of the assumptions of game theory with evolutionary programming and aim to find optimal set of cooperating trajectoriesof all ships involved in an encounter situation. In a two-ship encounter situation the method enables the operator of an on-board collision-avoidance system to predict the most probable behaviour of atarget and to plan the own manoeuvres...
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Evolutionary Sets of Cooperating Ship Trajectories: COLREGS Compliance
PublikacjaThe paper presents a newly designed improvement to the method of solving multi-ship encounter situations. In general, the method combines some of the assumptions of game theory with evolutionary programming and aims to find optimal set of cooperating trajectories of all ships involved in an encounter situation. The improvement presented here is a new way of modelling some of the COLREGS rules. Due to this change, the method is...
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Evolutionary Sets of Safe Ship Trajectories: simulation results
PublikacjaThe Evolutionary Sets of Safe Ship Trajectories is a method solving multi-ship encounter situations. For given positions and motion parameters the method finds a near optimal set of safe trajectories of all ships involved in an encounter. The paper briefly presents foundations of the method and focuses on simulation results for selected test cases based on the Baltic Basin. The computer simulations cover both open waters and restricted...
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Absorption spectroscopy setup for determination of whole human blood and blood–derived materials spectral characteristics
PublikacjaA dedicated absorption spectroscopy system was set up using tungsten-halogen broadband source, optical fibers, sample holder, and a commercial spectrometer with CCD array. Analysis of noise present in the setup was carried out. Data processing was applied to the absorption spectra to reduce spectral noise, and improve the quality of the spectra and to remove the baseline level. The absorption spectra were measured for whole blood...
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Evolutionary Sets of Safe Ship Trajectories: development of the method
PublikacjaThe Evolutionary Sets of Safe Ship Trajectories is a method solving ship encounter situations. The method combines evolutionary approach to planning ship trajectory with some of the assumption of game theory. For given positions and motion parameters the method finds a near optimal set of safe trajectories of all ships involved in an encounter. The version presented here is an updated one and its authors have tested extensively...
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Comparable analysis of PID controller settings in order to ensure reliable operation of active foil bearings
PublikacjaIn comparison to the traditional solutions, active bearings offer great operating flexibility, ensure better operating conditions over a wider range of rotational speeds and are safe to use. In order to ensure optimum bearing performance a bearing control system is used that adapts different geometries during device operation. The selection of optimal controller parameters requires the use of modern optimization methods that make...
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A selection of PID type controller settings via LQR approach for two-wheeled balancing robot
PublikacjaThe problem of PID type controller tuning has been addressed in this paper. In particular, a method of selection of PD settings based on the solution of linear–quadratic optimisation problem using the energy criterion has been investigated. Thus, the possibility of transforming optimal settings of the linear–quadratic regulator into the settings of the controller in the classical control system has been given. The presented methodology...
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Composition and antimicrobial activity of fatty acids detected in the hygroscopic secretion collected from the secretory setae of larvae of the biting midge Forcipomyia nigra (Diptera: Ceratopogonidae)
PublikacjaThe hygroscopic secretion produced by the secretory setae of terrestrial larvae of the biting midge Forcipomyia nigra (Winnertz) was analysed using gas chromatography coupled with mass spectrometry (GC-MS). The viscous secretion is stored at the top of each seta and absorbs water from moist air. GC-MS analyses (four independent tests) showed that the secretion contained 12 free fatty acids, the most abundant of which were oleic...
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Selection and Setting of an Intelligent Fuzzy Regulator based on Nonlinear Model Simulations of a Helicopter in Hover
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Setting-up a Blood Pressure and Vascular Protection Clinic: Requirements of the European Society of Hypertension
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The evidence for the impact of policy on physical activity outcomes within the school setting: A systematic review
PublikacjaPurpose Despite the well-established health benefits of physical activity (PA) for young people (aged 4–19 years), most do not meet PA guidelines. Policies that support PA in schools may be promising, but their impact on PA behavior is poorly understood. The aim of this systematic review is to ascertain the level and type of evidence reported in the international scientific literature for policies within the school setting that...
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Structural stability of invariant sets of vibro-impact systems
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