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Wyniki wyszukiwania dla: electronic%20transition%20dipole%20moment%20function
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Portable Electronic Nose Based on Electrochemical Sensors for Food Quality Assessment
PublikacjaThe steady increase in global consumption puts a strain on agriculture and might lead to a decrease in food quality. Currently used techniques of food analysis are often labour-intensive and time-consuming and require extensive sample preparation. For that reason, there is a demand for novel methods that could be used for rapid food quality assessment. A technique based on the use of an array of chemical sensors for holistic analysis...
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Power electronic systems as a crucial part of Smart Grid infrastructure - a survey
PublikacjaThis article gives a tutorial overview of the most important issues related to the use of power electronic systems in power engineering, with respect to the urgent need for modernization of existing grids in the direction of intelligent networks. The main problems and conditions bound up with the construction of Smart Grids and the location, as well as functioning in them of the most important power electronic systems are presented...
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Electronic structure and magnetism of samarium and neodymium adatoms on free-standing graphene
PublikacjaThe electronic structure of selected rare-earth atoms adsorbed on a free-standing graphene was investigated using methods beyond the conventional density functional theory (DFT+U, DFT +HIA, and DFT+ED). The influence of the electron correlations and the spin-orbit coupling on the magnetic properties has been examined. The DFT+U method predicts both atoms to carry local magnetic moments (spin and orbital) contrary to a nonmagnetic...
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Cardiovascular data analysis using electronic wearable eyeglasses-preliminary study
Publikacjahe paper presents an alternative approach to the monitoring of the cardiovascular system. The study depicts configurations of the utilized system and preliminary results of electrical and mechanical parameters of the cardiac system which can be measured using a head-worn device.
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Evaluation of the prediction ability of air pollutants based on the electronic nose responses
PublikacjaElectronic noses are able to perform on-line measurements of the toxic volatile compounds in air. Due to their low cost and compact size they can be placed in the areas exposed to pollution, outside the laboratory. Those advantages, on the other side, force the need for development of the reliable sensors data analysis procedures. One of the most important issues connected with electronic noses is the lack of stability of the gas...
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Critical review of electronic nose and tongue instruments prospects in pharmaceutical analysis
PublikacjaElectronic nose (enose, EN) and electronic tongue (etongue, ET) have been designed to simulate human senses of smell and taste in the best possible way. The signals acquired from a sensor array, combined with suitable data analysis system, are the basis for holistic analysis of samples. The efficiency of these instruments, regarding classification, discrimination, detection, monitoring and analytics of samples in different types...
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Antimony substituted lanthanum orthoniobate proton conductor – structure and electronic properties.
PublikacjaX‐ray and neutron diffraction have been utilized to analyze the crystalline and electronic structure of lanthanum orthoniobate substituted by antimony. Using X‐ray absorption spectroscopy and photoelectron spectroscopy, changes in the electronic structure of the material upon substitution have been analyzed. The structural transition temperature between fergusonite and scheelite phases for 30 mol% antimony substitution was found...
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Trust in Electronic Word-of-Mouth (eWOM): the concept and the most important determinants
PublikacjaeWOM and trust in it is now the most important factor in determining buyers' purchasing behavior. Familiarity with the determinants of trust establishes the formation of appropriate marketing activities. However, the growing number of new forms of eWOM and its increasingly complex and multidimensional nature have created a lot of confusion. The article aims to organize the concepts related to trust in eWOM, to indicate the most...
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On the broadband behaviour of planar elliptical dipole-modal approach
PublikacjaBroadband behavior of planar elliptical dipole structure is analyzed using Illuminatin Modes (IM) approach. The current on patch has been expanded in series of eigenfunctions in form of Mathieu radial and angular functions. The frequency behavior of current distributions and related powers have been discussed to explain the mechanism of broadband operation of the dipole. Different behavior of radiations patterns in wide frequency...
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Fate of Dipole-Bound Anion States when Hydrated
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Compact Planar Balun for the UWB Dipole Feeding Network
PublikacjaW pracy opisano wyniki z badań numerycznych ultra szerokopasmowego symetryzatora planarnego o zredukowanych wymiarach. Układ został zaprojektowany w oparciu o konfigurację opisaną w literaturze. Względem konfiguracji bazowej, układ przeprojektowano na inne podłoże. W celu weryfikacji przydatności układu, przeprowadzono symulację anteny dipolowej zasilanej opisywanym symetryzatorem. Na podstawie otrzymanych rezultatów przekazano...
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FDTD-Compatible Green's function based on scalar discrete Green's function and multidimensional Z-transform
PublikacjaIn this contribution, a new formulation of the discrete Green's function (DGF) is presented for the finitedifference time-domain (FDTD) grid. Recently, dyadic DGF has been derived from the impulse response of the discretized scalar wave equation (i.e., scalar DGF) with the use of the multidimensional Z-transform. Its software implementation is straightforward because only elementary functions are involved and a single function...
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New transition curve adapted to railway operational requirements
PublikacjaThe paper points to the limited possibilities of improving the existing situation in the area of transition curves used in geometrical layouts of the railway track. Difficulties in the practical implementation and maintenance of very small horizontal ordinates of the transition curve and the ordinates of the gradient due to cant in the initial section, appearing on smooth transition curves, were indicated. The main reason for this...
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GROWTH AND STRUCTURAL CHANGES IN TRANSITION COUNTRIES: THE CHICKEN OR THE EGG?
PublikacjaThe objective of this study is to test empirically the relationship between structural changes (changes in gross value added and employment) and economic growth. We used a panel Granger-causality analysis based on annual data for eight transition countries, covering the period 1995–2011. The main finding is that the causality relations analysed are heterogeneous processes and are identified more often...
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High pressure effect on charge transfer transition in Y2O2S:Eu3+
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Energy Transition in Poland—Assessment of the Renewable Energy Sector
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Induction of Epithelial-mesenchymal Transition in MDCK II Cells
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Possible singlet-to-triplet pairing transition in Na_xCoO_2 * yH_2O
PublikacjaW pracy przedstawiono dokładne pomiary górnego pola krytycznego (H_c2) w niedawno odkrytym nadprzewodniku Na_xCoO_2 * yH_2O. Zauważono niezwykłe zachowanie pola krytycznego w funkcji temperatury. W celu wyjaśnienie zjawiska rozwiązano równania Gorkova dla sieci trójkątnej. Eksperymentalny wynik może być interpretowany jako przejście singlet - tryplet wywołane polem magnetycznym.
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The transition of HIV within and between affected populations in Poland
PublikacjaThe aim of the paper is the estimation of probabilities that describe the transition of HIV within and between the following three populations: homosexual and bisexual men, injecting drug users and heterosexual persons in Poland in the years 1995-2006
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The first order phase transition and superconductivity in BaNi2As2single crystals
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Possible singlet-to-triplet pairing transition inNaxCoO2·yH2O
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CIVILIZING THE PUBLIC PARTICIPATION PRACTICE IN POST-TRANSITION COUNTRIES
PublikacjaThe phenomenon of public participation is not so new to both planning theory and practice. In fact, involving local community in the decision-making process regarding local urban development directions is widely discussed and a number of various forms of these are being introduced. This paper deals with a number of
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Electron detachment energies in high-symmetry alkali halide solvated-electron anions
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Electron attachment and electron iozization of acetic acid clusters embedded in helium nanodroplets
PublikacjaThe effect of incident electrons on acetic acid clusters is explored for the first time. The acetic acid clusters are formed inside liquid helium nanodroplets and both cationic and anionic productsejected in to the gas phase aredetected by mass spectrometry.
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Motion of electrons in a hypocycloidal monochromator
PublikacjaBadano zachowanie elektronów w monochromatorze hipocykloidalnym, wykorzystującym jednorodne pole magnetyczne i pole elektryczne o symetrii walcowej. Wyprowadzone zostały równania ruchu elektronów przy założeniu zaniedbywanego wpływu efektów brzegowych oraz zbadano wpływ parametrów monochromatora na tory ruchu elektronów.
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Synthesis and properties of azobenzocrown ethers with pi-electron donor, or pi-electron donor and pi-electron acceptor group(s) on benzene rings
PublikacjaZsyntezowano nowe etery azobenzokoronowe o różnej wielkości makropierścienia i z różnymi podstawnikami w resztach benzenowych. Korony te posiadają w pierścieniach benzenowych, w pozycji para do grupy azo grupy funkcyjne o charakterze π-elektronodonorowym lub π-elektronoakceptorowym. Zbadano zdolność kompleksowania jonów metali przez te korony, w roztworze, metodą spektrofotometrii UV-vis. Ustalono strukturę 19-członowego eteru...
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Magnetic field effects in dye-sensitized and organic solar cells
PublikacjaThe charge recombination and exciton dissociation are generally recognized as the basic electronic processes limiting the efficiency of photovoltaic devices. The aim of this thesis is to understand the electronic processes limiting the operation of efficient solar cells with particular emphasis on the role of electronic states endowed with magnetic dipole moment. The research work is divided into two parts. The first part deals...
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Recurrence scheme for FDTD-compatible discrete Green's function derived based on properties of Gauss hypergeometric function
PublikacjaIn this paper, the formulation of one-dimensional FDTD (Finite-difference time-domain)-compatible discrete Green's function (DGF) is derived based on the Gauss hypergeometric function (GHF). The properties of GHF make it possible to derive the recurrence scheme only in the time domain for the DGF generation. Furthermore, this recurrence scheme is valid for any stable time-step size and can be implemented using standard numerical...
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Closed forms of the Green's function and the generalized Green's function for the Helmholtz operator on the N-dimensional unit sphere
PublikacjaPokazano, że funkcję Greena dla operatora Helmholtza na N-wymiarowej sferze jednostkowej można wyrazić przez funcję Gegenbauera pierwszego rodzaju. W tych przypadkach, w których funkcja Greena nie istnieje, skonstruowano uogólnioną funkcję Greena.
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A procedure for elastoplastic hardening function identification.
PublikacjaThe inverse analysis method for identifying a nonlinear hardening function,which governs a plastic yielding of soil and rock materials in the framework of elastoplastic theory is presented. A concept of two stage finite element based on spatial discretization of computational space and hardening function space is introduced. The proposed inverse analysis can be classified as the output least squares method. The Levenberg Marquard...
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Load function walking pedestrian on the footbridge.
PublikacjaModern foot bridges are more and more sensitive to variable load created by moving pedestrians. These are several reasons for that. Quickly growing up road infrastructure forces us to build foot bridges just to reconnect one piece of land, separated now by the new road or railway. These bridges are lightweight because the only live load acting on them comes from pedestrians.The paper focuses on the definition of human induces dynamic...
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Acceleration of the discrete Green's function computations
PublikacjaResults of the acceleration of the 3-D discrete Green's function (DGF) computations on the multicore processor are presented. The code was developed in the multiple precision arithmetic with use of the OpenMP parallel programming interface. As a result, the speedup factor of three orders of magnitude compared to the previous implementation was obtained thus applicability of the DGF in FDTD simulations was significantly improved.
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Accuracy of the discrete Green's function computations
PublikacjaThis paper discusses the accuracy of the discrete Green's function (DGF) computations. Recently closed-form expression of the DGF and its efficient numerical implementation were presented which facilitate the DGF applications in FDTD simulations of radiation and scattering problems. By carefully comparing the DGF results to those of the FDTD simulation, one can make conclusions about the range of the applicability of the DGF for...
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Electronic and nuclear properties from the analysis of the isotope shifts in the spectral lines of lead
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Application of the Electronic Nose Technique to Differentiation between Model Mixtures with COPD Markers
PublikacjaABSTRACT The paper presents the potential of an electronic nose technique in the field of fast diagnostics of patients suspected of Chronic Obstructive Pulmonary Disease (COPD). The investigations were performed using a simple electronic nose prototype equipped with a set of six semiconductor sensors manufactured by FIGARO Co. They were aimed at verification of a possibility of differentiation between model reference mixtures with...
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Mixed electronic-ionic conductivity in vanadate oxide glasses containing alkaline ions
PublikacjaZbadano mieszane przewodnictwo polaronowo-jonowe w szkłach wanadanowych zawierających jony metali alkalicznych.
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Electronic and optical properties of theMg2−xFexSiO4spinel: From band insulator to Mott insulator
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Electronic and dynamical properties of CeRh2As2 : Role of Rh2As2 layers and expected orbital order
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Issue of Assessment of the Strong Electromagnetic Pulses Impact on the Functioning of Selected Electronic Devices
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Determination of Safety Levels of Electronic Devices Exposed to Impact of Strong Electromagnetic Pulses
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Reliability analysis of aerodrome’s electronic security systems taking into account electromagnetic interferences
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Hierarchical Hydrographic Data Fusion for Precise Port Electronic Navigational Chart Production
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Electronic conduction in (Bi,Pb)-Sr-Ca-Cu-O granular superconductors
PublikacjaMetale i nadprzewodniki granulaste są bardzo ciekawymi materiałami dzięki jednoczesnej obecności oddziaływań kulombowskich, tunelowania elektronów i par Coopera oraz różnych zjawisk związanych z nieuporządkowaniem. W pracy przedstawiono właściwości elektryczne granulastego nadprzewodnika (Bi,Pb)-Sr-Ca-Cu-O otrzymanego wskutek krystalizacji w fazie stałej. Badane materiały mogą być traktowane jako układ granul umieszczonych w matrycy...
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Advanced photonic, electronic, and web engineering systems: WILGA Symposium, January 2013
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Using the AHP Method to Select an Electronic Documentation Management System for Polish Municipalities
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Stereochemical Assingment of β -lactam Antibiotics and their Analogues by Electronic Circular Dichroism Spectroscopy
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Complementarity of electronic and vibrational circular dichroism based on stereochemical studies of vic-diols
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The Righi-Leduc effect: on evidence of two-band electronic structure in Nd1.86Ce0.14CuO4-y.
PublikacjaPrzedstawiono badania temperaturowe zależności oporu elektrycznego, efektu Halla (RH), przewodnictwa cieplnego (k) i współczynnika Righi-Leduc(SRL). Badania wykazały, że współczynnik RL> 0 w szerokim zakresie temperatur RH zmienia znak dwukrotnie w T=50 i 250K. Niezgodność znaków SRL i RH jednoznacznie wskazuje obecność w materiale nośników obu znaków tzn. n- i p- typu. W pracy pokazano, że transport ciepła zdominowany jest przez...
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Implementation of an input-output method of diagnosis of analog electronic circuits in embedded systems
PublikacjaPrzedstawiono implementację zmodyfikowanej metody 2D detekcji i lokalizacji uszkodzeń sieci analogowych z uwzględnieniem tolerancji elementów nieuszkodzonych w systemach wbudowanych bazujących na mikrokontrolerach. Metoda składa się z dwóch etapów: przedtestowego - tworzenie słownika uszkodzeń i testowego, w którym dokonywany jest pomiar przez mikrokontroler amplitudy i przesunięcia fazowego odpowiedzi na pobudzenie przebiegiem...
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Tunable semiconductor laser application for interferometric optical fibersensors.Optical and Electronic Sensors V.
PublikacjaW pracy przedstawiono metody stabilizacji punktu pracy światłowodowych sensorów interferometrycznych. W metodach tych wykorzystuje się układy regulacji sterujące długością fali przestrajalnego lasera półprzewodnikowego. Przedstawiono tryby pracy układów regulacji oraz problemy związane z ich projektowaniem i realizacją. Przeanalizowano ograniczenia sensorów wykorzystujących powyższe układy. Dokonano weryfikacji eksperymentalnej...