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Tytuł:
Wavelet Analysis in EPR Spectroscopy
Autorzy:
Drzewiecki, A.
Sczaniecki, P. B.
Powiązania:
https://bibliotekanauki.pl/articles/2043391.pdf
Data publikacji:
2005-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.05.Kf
76.30.Rn
82.50.Kx
Opis:
Possibility of application of wavelet analysis in EPR spectroscopy is investigated. Basic mathematics of the method is summarized, with emphasis on the relation between EPR experiment and physical interpretation of wavelet transform. The fact that first derivative of the Lorentzian function can be used as a base wavelet is employed and the specific rules of the interpretation of the final wavelet synthesis are identified. Analysis of a sample EPR spectrum of X-ray irradiated guanidinium aluminium sulphate hexahydrate crystal is given as an example. Set of parameters resulting from the wavelet analysis is subsequently used to reconstruct/synthesize the original EPR spectrum. The method involves an opportunity of eliminating unwanted components of the multicomponent spectra. Generally, the method may supplement other means of data analysis, in particular, in magnetic resonance.
Źródło:
Acta Physica Polonica A; 2005, 108, 1; 73-79
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous Analysis of Several Mössbauer Spectra
Autorzy:
Cieslak, J.
Dubiel, S.
Powiązania:
https://bibliotekanauki.pl/articles/1811902.pdf
Data publikacji:
2008-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.80.+y
07.05.Kf
02.60.-x
Opis:
A method based on a simultaneous fit of several Mössbauer spectra from a series of measurements is compared with the one based on an independent analysis of each spectrum. Three different algorithms, namely a least squares iteration procedure, a Gauss-Seidel function minimization and a genetic algorithm based method are applied and discussed. The conclusions drawn are supported by a simulated and a measured spectra analysis.
Źródło:
Acta Physica Polonica A; 2008, 114, 6; 1691-1705
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Settling Time Testing of Fast DACs
Autorzy:
Kvedaras, R.
Kvedaras, V.
Ustinavicius, T.
Powiązania:
https://bibliotekanauki.pl/articles/1505231.pdf
Data publikacji:
2011-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.05.Dz
07.05.Hd
07.05.Kf
07.05.Tp
Opis:
New specialized sampling converter for signal timescale transformation and algorithm of digital signal processing for automated measurement of settling times of fast digital-to-analogue converters is represented. The new sampling device with numerically controlled oscillators allows us realization of different types of the timescale transformation. Usage of ΣΔ analogue-to-digital converter and first-in first-out memory allows us significant simplification of the device. The equations of timescale transformation ratio and sampling step are presented. A method using a brick-wall comb filter in frequency domain to filter measurement signal has been developed. It is shown that such filtering allows us significant reduction of noise of measurement signal. A new method and algorithm using a brick-wall comb filter and averaging of filtered signal has been developed. Results of the research of developed digital signal processing algorithm are submitted.
Źródło:
Acta Physica Polonica A; 2011, 119, 4; 521-527
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative Analysis of Transferred Nuclear Overhauser Effects in Complex Spin Systems by Full Relaxation Matrix Analysis
Autorzy:
Czaplicki, J.
Milon, A.
Powiązania:
https://bibliotekanauki.pl/articles/2043384.pdf
Data publikacji:
2005-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.56.Ub
82.20.Wt
07.05.Kf
Opis:
A computer program was developed for studying transferred nuclear Overhauser effects in complex spin systems. It permits quantitative analysis of nuclear Overhauser effects observed in biologically important systems, such as ligands interacting with transmembrane receptors in the presence of lipid bilayers. The full generalized relaxation matrix approach takes into account the local mobility, spin equivalence, finite exchange rates, and spectral overlap. The program can be used either to simulate theoretical nuclear Overhauser effect buildup curves or to fit a relaxation matrix of a given model to experimental data. Selected examples illustrate the program's performance.
Źródło:
Acta Physica Polonica A; 2005, 108, 1; 25-32
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Q-Entropy Approach to Selecting High Income Households
Autorzy:
Gajowniczek, K.
Karpio, K.
Łukasiewicz, P.
Orłowski, A.
Ząbkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1388367.pdf
Data publikacji:
2015-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
05.45.Tp
05.40.Ca
07.05.Kf
07.05.Mh
Opis:
A generalized algorithm for building classification trees, based on Tsallis q-entropy, is proposed and applied to classification of Polish households with respect to their incomes. Data for 2008 are used. Quality measures for obtained trees are compared for different values of q parameter. A method of choosing the optimum tree is elaborated.
Źródło:
Acta Physica Polonica A; 2015, 127, 3A; A-38-A-44
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of the probabilities of the transmission of genetic traits within Bayesian logical inference
Autorzy:
Cevri, M.
Üstündağ, D.
Powiązania:
https://bibliotekanauki.pl/articles/1065633.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.10.Ud
02.50.Ga
02.50.-r
02.70.Rr
07.05.Kf
42.62.Be
Opis:
Predictions for the transmission of genetic traits along to generations are an important process for patients, their family and genetic counseling. For this purpose, Bayesian analysis in which one can include a priori knowledge taking into account all relevant information into the problem could be a useful tool to examine how disease forecasting affects its probability so that it provides a more straightforward interpretation of predictions. Therefore, we investigate here transmissions of autosomal recessive diseases along to generations within Bayesian framework. In order to do that we develop a computer code that is useful to facilitate genetic transition matrices to forecast predictions of probabilities of transmission of genetic traits by using Mathematica software, well known as an algebraic manipulation language. Furthermore, the symbolic implementation of the code is applied for the cystic fibrosis disease forecasting in humans genetics. All results show that Bayesian analysis plays a central role of prediction for probabilities of transmissions of genetic traits along generations for cystic fibrosis disease or other autosomal recessive disorders.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 45-50
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-Chemical and Biological Properties of Arsenic Sulfide ($As_{55}S_{45}$) Nanosuspension Prepared by Milling
Autorzy:
Bujňáková, Z.
Shpotyuk, O.
Sedlák, J.
Pastorek, M.
Turianicová, E.
Baláž, P.
Ingram, A.
Powiązania:
https://bibliotekanauki.pl/articles/1375164.pdf
Data publikacji:
2014-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Wk
81.05.Kf
81.07.-b
Opis:
Nanosuspension based on melt-quenched arsenic sulfide of nominal $As_{55}S_{45}$ composition was prepared by nanomilling and tested as potential anticancer drug. Polyvinylpyrrolidone was used as steric stabilizer and inhibitor of agglomeration. Individual nanoparticles had average size of 192 nm (determined by photon cross-correlation spectroscopy) and had several times better dissolution ability in comparison with bulk $As_{55}S_{45}$. Effect of nanomilling is shown to be associated with formation of arsenic sulfide crystalline nanoparticles and free-volume entities located at the interface between nanoparticles and surrounding matrix as it follows from positron annihilation measurements. Cytotoxicity tests were performed using human melanoma cell line Bowes and confirmed high toxicity of the studied nanosuspension.
Źródło:
Acta Physica Polonica A; 2014, 126, 4; 902-906
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
One-Dimensional Cellular Automata with Reflective Boundary Conditions and Radius Three
Autorzy:
Akin, H.
Siap, I.
Uguz, S.
Powiązania:
https://bibliotekanauki.pl/articles/1219611.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.10.Yn
07.05.Kf
02.10.Ox
Opis:
A family of one-dimensional finite linear cellular automata with reflective boundary condition over the field $Z_p$ is defined. The generalizations are the radius and the field that states take values. Here, we establish a connection between reversibility of cellular automata and the rule matrix of the cellular automata with radius three. Also, we prove that the reverse CA of this family again falls into this family.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 405-407
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Pseudo Random Bit Generators via Two-Dimensional Hybrid Cellular Automata
Autorzy:
Temiz, F.
Siap, I.
Akin, H.
Powiązania:
https://bibliotekanauki.pl/articles/1181939.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.10.Yn
07.05.Kf
02.10.Ox
Opis:
In this work, we study the structure of two-dimensional linear hybrid cellular automata with respect to adiabatic boundary condition. Further, we check the performance of hybrid cellular automata constructed through the members of this family in generating pseudo random bits.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 534-537
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Graphical Interface to the MOSGRAF Suite
Autorzy:
Duraj, Ł.
Ruebenbauer, K.
Powiązania:
https://bibliotekanauki.pl/articles/1506654.pdf
Data publikacji:
2011-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.80.+y
07.05.Kf
Opis:
A contribution is devoted to the recent development of the MOSGRAF suite used to process Mössbauer data and to generate reference functions for the modern spectrometers of the MsAa-x (x=1, 2, 3, 4) family. Newly developed interface is designed for the Microsoft Windows-XP® or higher system of this class. However one can use some older system of this class as well provided some plug-ins are installed additionally. The lowest useable system is Microsoft Windows-98® - 32-bit edition. The new version of the MOSGRAF suite is compatible with 32-bit and 64-bit systems. MOSGRAF is fully compatible with MsAa-x spectrometers, however a powerful tool to convert ASCII data files from other spectrometers is provided. Data processing programs are compiled by the high efficiency Fortran-90 Lahey-Fujitsu® compiler. One of the most important new features is the ability to process velocity calibration data obtained by the new method based on the measurement of the time lapse between fringes of the Michelson-Morley interferometer.
Źródło:
Acta Physica Polonica A; 2011, 119, 1; 75-77
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiway Similarity Approach Based on Divergence Functions and Smoothness Measure
Autorzy:
Szupiluk, R.
Sobon, T.
Powiązania:
https://bibliotekanauki.pl/articles/1398839.pdf
Data publikacji:
2016-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
05.45.Tp
05.40.Ca
07.05.Kf
07.05.Mh
Opis:
In this paper we present a novel similarity measure method for financial data. In our approach, we propose the assessment of the similarity in a coherent hierarchical and multi-faceted way, following the general scheme where various detailed basic measures may be used like the Fermi-Dirac divergence, Bose-Einstein divergence, or our new smoothness measure. The presented method is tested on benchmark and real stock markets data.
Źródło:
Acta Physica Polonica A; 2016, 129, 5; 927-931
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mining Associations on the Warsaw Stock Exchange
Autorzy:
Karpio, K.
Łukasiewicz, P.
Orłowski, A.
Ząbkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1400174.pdf
Data publikacji:
2013-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
89.65.Gh
07.05.Kf
07.05.Rm
Opis:
Identification of patterns in stock markets has been an important subject for many years. In the past, numerous techniques, both technical and econometric, were used to predict changes in stock markets, but dependences among all the companies listed on a stock market were considered in a limited extent. Numerous studies confirm that larger stocks items appear to influence smaller ones and that, on a global level, most of the world's stock markets are integrated. Therefore, this study implements the association rules using a data mining approach to explore the co-movement between stock items listed on the Warsaw Stock Exchange. We believe that in order to describe and to understand market's behavior, data mining techniques are more flexible in use than for instance pricing models based on a finance theory. The former seems to be more effective for explaining market behavior without making particular assumptions.
Źródło:
Acta Physica Polonica A; 2013, 123, 3; 553-559
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Light Induced Modification of Graphene Oxide Layers on GaN Basis
Autorzy:
Łopion, A.
Stobiński, L.
Pakuła, K.
Bożek, R.
Kaźmierczak, P.
Wysmołek, A.
Stępniewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1185429.pdf
Data publikacji:
2016-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.22.-f
78.55.-m
78.30.-j
07.05.Kf
Opis:
Graphene oxide suspension in various solvents was spin coated on metal organic vapor phase epitaxy grown GaN/saphire layers. Samples were characterised using the Raman spectroscopy and atomic force microscopy, before and after high temperature treatment. We found that graphene oxide was modifed by high temperature treatment, however a considerable modification was also observed as a result of impinged laser light incident due to the measurements. The Raman spectra were decomposed into two contributions showing different behaviour during the Raman scattering measurements.
Źródło:
Acta Physica Polonica A; 2016, 130, 5; 1169-1171
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations and Applications of Nanoperm-Type Soft Magnetic Materials
Autorzy:
Hasiak, M.
Łukiewski, M.
Miglierini, M.
Kaleta, J.
Powiązania:
https://bibliotekanauki.pl/articles/1534084.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Kf
81.07.Bc
81.40.Rs
85.70.Ay
Opis:
The microstructure and magnetic properties of $Fe_{82}Zr_4Nb_3B_{10}Cu_1,$ $Fe_{80}Zr_4Mn_3B_{12}Cu_1$ and $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys were investigated. Using RALE software the basic parameters of transformers made from nanocrystalline alloys with about 25% and 50% of crystalline phase were calculated. The transformer made from $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys after annealing at 773 K for 1-shows the lowest core losses and highest efficiency.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 829-831
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Data Mining Processing Stage Effect on Performance in Interferometric Measurement System
Autorzy:
Böcekçi, V.
Yıldız, K.
Powiązania:
https://bibliotekanauki.pl/articles/1033378.pdf
Data publikacji:
2017-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.05.Kf
81.05.Bx
06.30.Bp
Opis:
Interferometric measuring systems are frequently used in determining the precise changes. The light of the venture property is used in this system which is possible to perform measurements in the nanometer precision. Analysis of data, which are taken from interferometric measurement systems, can be performed by fringe counting, image processing. There are disadvantages of such kinds of methods which are cost, time and design challenge. The most innovation in our study, the need of electronic circuit or image processing algorithm for determining obtained values which are taken from measurement system as a result of processing part can be eliminated. In processing step, arrangement of the data is quite important in terms of the achieved results. Through data processing, it is provided to make faster analysis by the aid of increasing quantity of the data. The displacement values which are taken by data processing show 90% success when comparing them with both electronic and image processing techniques.
Źródło:
Acta Physica Polonica A; 2017, 131, 1; 46-47
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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