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1. Application to Simulated Data
... The algorithm has been successfully applied to both real and simulated astronomical data (Jefferies , 1993; Jefferies 1993) and its ability to accurately preserve photometry in the observed image has been demonstrated. ... In order to investigate the algorithm's performance without the influence of detector and photon noise we took the ``truth'' data set and convolved it with the given PSF to generate a noiseless image. ... The restored object and the two restored PSF's are shown in Fig. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/stsci/meetings/irw/proceedings/christouj.dir/section3_2.html -- 6.6 Кб -- 18.04.1994
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2. Positive Iterative Deconvolution in Comparison to Richardson-Lucy Like
... Positive iterative deconvolution is an algorithm that applies non-linear constraints, conserves energy, and delivers stable results at high noise-levels. This is also true for Richardson-Lucy like algorithms which follow a statistical approach to the deconvolution problem. ... All algorithms resolve the objects, as shown by the reconstructions by Richardson-Lucy in Figure 2 on the right, the algorithm by M?ller in Figure 3 on the left and positive iterative deconvolution in Figure 3 on the right. ...
[ Сохраненная копия ]  Ссылки http://www.stecf.org/conferences/adass/adassVII/prukschm.html -- 14.0 Кб -- 12.06.2006
[ Сохраненная копия ]  Ссылки http://www.adass.org/adass/proceedings/adass97/prukschm.html -- 14.0 Кб -- 15.05.1998
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3. The AstroStat Slog Blog Archive Open and Shut [Equation of the Week]
... Archives . ... Discontinuation of weekly [arXiv] series . ... For a discipline that relies so heavily on images, it is rather surprising how little use astronomy makes of the vast body of work on image analysis carried out by mathematicians and computer scientists. ... images. ... Images may be Opened and Closed with different structure elements. ... Tags: close , dilate , EotW , Equation , Equation of the Week , erode , Morphological operator , open , set theory . Category: Imaging , Jargon | ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2008/eotw-open-and-shut/index.html -- 24.3 Кб -- 01.03.2014
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4. Figures, demonstrating CLEAN algorithm
. Приложение к лекции для студентов . Верходанов О.В. Рис.12. Пример работы алгоритма чистки. На верхнем рисунке приводится модельное изображение, на среднем - грязная карта, на нижнем - изображение, восстановленное с помощью CLEAN. Рисунок воспроизведен из работы Стиэра и др. (1984). vo @ sao.ru ( Oleg Verkhodanov ) .
[ Сохраненная копия ]  Ссылки http://sed.sao.ru/~vo/rad_prob/clean_figs.html -- 2.0 Кб -- 05.06.2007
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5. Algorithm of the MONTE CARLO Simulation
... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Our Monte Carlo code is based on the standard algorithm given in Pozdnyakov, Sobol' & Sunyaev (1983). ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/pasa/17_1/cullen/paper/node2.html -- 51.9 Кб -- 08.04.2016
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6. Regularization of Lucy's algorithm
. Next: Convergence Up: Regularization from significant Previous: Regularization of the . љ Now, define . Then , and hence . Lucy's equation is: . and the regularization leads [ 39 ] to: . Rein Warmels . Mon Jan 22 15:08:15 MET 1996
[ Сохраненная копия ]  Ссылки http://www.sao.ru/precise/Midas_doc/doc/95NOV/vol2/node343.html -- 2.7 Кб -- 23.02.1996
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7. Algorithm
. XMM-Newton Science Analysis System . rgslinepos (rgslinepos-1.3.1) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page . set instrument state variable for CAL calculate angle of incidence on gratings alpha calculate dispersion angle beta from dispersion equation convert coordinates . XMM-Newton SOC/SSC -- 2007-07-09
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/7.1.0/doc/rgslinepos/node8.html -- 3.3 Кб -- 09.07.2007
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8. ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
... Phase Correction Algorithms | ... R. Bolton, B. Nikolic, J. Richer, The Power Spectrum of Atmospheric Path Fluctuations at the ALMA Site from Water Vapour Radiometer Observations , ALMA Memo 592, PDF , ALMA Memo series entry . Emily I. Curtis, Bojan Nikolic, John S. Richer and Juan R. Pardo, Atmospheric dispersion and the implications for phase calibration , ALMA Memo 590. ... B. Nikolic, ALMA Phase Calibration/Correction , Presented at Algorithms 2008 Workshop, Oxford, December 2008. pdf . ...
[ Сохраненная копия ]  Ссылки http://www.mrao.cam.ac.uk/projects/alma/fp6/publications.html -- 13.5 Кб -- 29.03.2012
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9. http://www.ipa.nw.ru/conference/2002/sovet/PS/BORDOVIT.PS
... 8, `` Celestial Mechanics'', 2002 Two trends in the development of numerical algorithms of celestial mechanics T. V. Bordovitsyna, V. A. Avdushev, A. M. Chernitsov Research Institute of Applied Mathematics and Mechanics, Tomsk, Russia The motion of a material particle with the mass m in the gravitational field of the central body with the mass M under the action of conservative forces F i with the potential function V i and non--conservative forces P in a ...
[ Текст ]  Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BORDOVIT.PS -- 31.6 Кб -- 19.08.2002
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10. http://www.iki.rssi.ru/seminar/20100609_11/Krivosheyev.pdf
... Moscow, Russia E-mail: krivosheev@iki.rssi.ru Notes: · · The Monte Carlo method (s) is also called the statistical test method An innumerable number of processes can be listed the outcome of which is not determined and has probabilistic nature, but these processes obey statistical laws, so to obtain the result we have to make multiple similar tests, i.e. to use the MC method Because probabilistic processes are widely spread in nature, the MC ...
[ Текст ]  Ссылки http://www.iki.rssi.ru/seminar/20100609_11/Krivosheyev.pdf -- 663.0 Кб -- 29.06.2010
[ Текст ]  Ссылки http://www.cosmos.ru/seminar/20100609_11/Krivosheyev.pdf -- 663.0 Кб -- 29.06.2010
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11. MONTE-CARLO
... COMPUTER SIMULATION OF RADIOWAVE MULTIPLE SCATTERING EFFECTS IN IONOSPHERE USING MONTE-CARLO METHOD . ... Distribution of reflected radiation on the ground is computed. ... Such influence can be remarkable if the scattering is multiple, i.e. the optical thickness for the scattering process is considerably greater than a unit. ... Radiation energy transfer in the slab is modeled by distribution of some particles carring small portions of radiation energy. ... The isotropic plasma approximation is...
[ Сохраненная копия ]  Ссылки http://ip.rsu.ru/~zabotin/posters/mont_car/mont_car.htm -- 12.8 Кб -- 02.02.2007
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12. Algorithms and software design
... Russian KOI8 . Scientists of Laboratory of radio astrophysics develop algorithms and software. ... design of statistical estimations methods of average and smoothing; . fitting algorithms design; . development of the data processing system FADPS (Flexible Astronomical Data Processing System); . design of visualisating and interactive data reduction programs for initial observational data ( fgr (Russian KOI-8) ) and continuum radio sources spectra (spg); . ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/lran/vo/dpE.html -- 2.4 Кб -- 09.04.2016
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/lran/vo/dpE.html -- 2.4 Кб -- 10.04.2016
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/lran/vo/dpE.html -- 2.4 Кб -- 09.04.2016
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13. http://www.iki.rssi.ru/galeev/astro2007/krivosheyev.pdf
... Moscow, Russia E-mail: krivosheev@iki.rssi.ru General notes · The Monte-Carlo method (s) is also called the statistical test method · An innumerable number of processes can be listed the outcome of which is not determined and has probabilistic nature, but these processes obey statistical laws, so to obtain the result we have to make multiple similar tests, i.e. to use the MC method · Because probabilistic processes are widely spread in nature, the MC ...
[ Текст ]  Ссылки http://www.iki.rssi.ru/galeev/astro2007/krivosheyev.pdf -- 563.0 Кб -- 10.02.2009
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14. Izmccd
... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...
[ Сохраненная копия ]  Ссылки http://www.izmccd.puldb.ru/izmccd9e.htm -- 9.9 Кб -- 17.09.2007
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15. T-matrix method (EBCM)
The T-matrix or transition matrix is well known in the quantum theory of scattering [ 56 ] where one also uses the Heisenberg S-matrix connected with the T-matrix by the relation . In contrast to the coordinate representation in the integral equation method, where the scattered and incident fields are connected by the Green function, the T-matrix connects the coefficients of the expansions of the scattered and incident fields in terms of a complete system of the vector basis functions. ...
[ Сохраненная копия ]  Ссылки http://www.astro.spbu.ru/DOP/3-REVS/KHLEB1/node10.html -- 11.0 Кб -- 19.11.2010
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16. Evolution of Supernova Explosion Rates in the Universe
Next: The Supernovae Rates Up: No Title Previous: Gravitational wave background from . In this Section we present the results of the Scenario Machine simulation of supernova explosion (SN) rates in the Galaxy for various types of supernovae and apply them for estimating the - dependence for the SN in the Universe (see JЖrgensen et al. 1995[ 80 ]). The Supernovae Rates . Dependence for the Supernova Explosions . for Supernova Explosions . Results and Discussion . ...
[ Сохраненная копия ]  Ссылки http://xray.sai.msu.ru/~mystery/articles/review/node91.html -- 4.6 Кб -- 29.03.1997
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17. dsmc
MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...
[ Сохраненная копия ]  Ссылки http://www.inasan.rssi.ru/~shematov/dsmc.html -- 45.6 Кб -- 06.04.2010
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18. Conference "Algorithms and Arithmetic"
... The French-Russian Poncelet Laboratory organizes a conference on "Algorithms and Arithmetic", Mai 17-19, 2010, to take place in the Independent University of Moscow. ... Just regarding any symbolic computation software (like Pari, Magma, Sage), one can see that there exists a real desire to manipulate on computers a large family of mathematical objects (sometimes very abstract) coming from number theory: number fields, p -adic numbers, Galois groups, schemes, modular forms, etc. ... Galois Theory. ...
[ Сохраненная копия ]  Ссылки http://www.mccme.ru/lifr/zykin/eng/arithalgo/index.html -- 5.8 Кб -- 30.06.2010
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19. Evidence for Dark Matter
The above image is a computer simulation of the distribution of mass in a Dark Matter dominated Universe. ... Structure (\eg density enhancements) clearly forms at the intersection of these filaments. ... What is Dark Matter? ... Testing for the presence of dark matter in the solar neighborhood now becomes an accounting problem The possible sources of this mass in the solar neighborhood are 1) luminous stars, 2) interstellar gas, 3) stellar remnants (mostly white dwarfs) and 4) dark matter: . ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/1997/ph410/l8.html -- 7.5 Кб -- 29.01.1997
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20. University Satellites and Space Science Education '2006
University Satellites and . Space Science Education . ... Simulation of Code and Doppler GPS & GLONASS Observables and Feasible Positioning Algorithms for Universitetskiy-Tatyana Satellite . ... Algorithms of complex processing can give more accurate navigational results than algorithms which use observables of GPS only or GLONASS only. ... The algorithm of the modeling of observables has several steps. ... Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2005-2006 . ...
[ Сохраненная копия ]  Ссылки http://cosmos.msu.ru/universat2006/main.php?sec=reg&step=aview&id=&aid=724 -- 8.6 Кб -- 21.12.2007
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