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1. The AstroStat Slog Blog Archive [ArXiv] component separation methods
... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2009/arxiv-component-separation-methods/index.html -- 23.2 Кб -- 01.03.2014
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2. Principal Components Analysis
... Among the objectives of Principal Components Analysis are the following. dimensionality reduction; љ . the determining of linear combinations of variables; љ . ... identification of groups of objects or of outliers. ... Finding a set of principal axes allows the objects to be adequately characterised on a smaller number of (artificial) variables. ... Reduction of dimensionality is practicable if the first new axes account for approximately 75 % or more of the variance. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/precise/Midas_doc/doc/95NOV/vol2/node213.html -- 7.2 Кб -- 23.02.1996
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3. Calculating the Position and Velocity Components of HST
... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...
[ Сохраненная копия ]  Ссылки http://www.adass.org/adass/proceedings/adass94/aket.html -- 12.3 Кб -- 03.11.2000
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4. Sternberg Astronomical Institute
SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/ -- 7.0 Кб -- 27.02.2014
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5. Astronomical Society
... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/ -- 49.2 Кб -- 09.04.2016
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6. Inference of Coefficients for Use in Phase Correction
... OOF software . ... Memos . ... Raw data . ... We present a Bayesian approach to calculating the coefficients that convert the outputs of ALMA 183 GHz water-vapour radiometers into estimates of path fluctuations that can be used to correct the observed interferometric visibilities. ... Please note that the files"COPYING" in each of the distribution packages have GPL listed but it is in fact LGPL which applies. ... This is the raw data from the SMA used in the analysis shown in Section 4 of the memo. ...
[ Сохраненная копия ]  Ссылки http://www.mrao.cam.ac.uk/~bn204/mk2/alma/memo-infer.html -- 14.3 Кб -- 25.11.2009
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7. http://www.gao.spb.ru/english/as/j2014/presentations/zotov.pdf
... L.V.Zotov , C. M. Bizouard Envelope calculation () () () E() L.V.Zotov , C. M. Bizouard Envelope calculation () () () E() L.V.Zotov , C. M. Bizouard Amplitude model and forecast 3-layer Neural Network with (7, 7, 1) neurons L.V.Zotov , C. M. Bizouard Phase model and forecast 3-layer Neural Network with (7, 7, 1) neurons L.V.Zotov , C. M. Bizouard Phase and amplitude models ~ Chandler ...
[ Текст ]  Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/zotov.pdf -- 2221.7 Кб -- 28.09.2014
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8. Components of Interoperability
... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/people/Ray.Norris/WGAD/MeetingIAUGA2000/ccheung/IAU_talk/tsld004.htm -- 48.1 Кб -- 12.04.2016
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9. Constraints on the model components:
... The fitting procedure will only converge to a unique solution if the components are linearly independent. ... The task calculates for each pair of component images and fails with an error if any is greater than 0.99. ... Hence components may be linearly independent in masked pixels yet still fail the test within the task. ... Finally, since the Poisson image values are necessarily all , negative values are not allowed in the model components. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/7.1.0/doc/bkgfit/node6.html -- 6.0 Кб -- 09.07.2007
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10. Российская Астрономическая Сеть.
... Астрономическая неделя с 11 по 17 апреля 2016 года . ... Александр Козловский . ... День открытых дверей на Пущинской РадиоАстрономической Обсерватории 09 апреля 2016 года . ... Полное солнечное затмение 9 марта 2016 года . ... Полное лунное затмение 28 сентября 2015 года . ... Затмение, которое произойдет 28 сентября 2015 года, является повторением через сарос (цикл повторений затмений равный 6585 дней или 18 лет 11 дней) полного лунного затмения от 16 сентября 1997 года с максимальной фазой 1,20.....
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/ -- 39.2 Кб -- 09.04.2016
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11. http://lnfm1.sai.msu.ru/~tempus/english/science/articles/ZotovPoster_APSG2013.pdf
... Gravity data reflect changes, related to the groundwater redistribution, ice melting, and precipitation accumulation. ... We apply Multichannel Singular Spectrum Analysis (MSSA, or extended EOF) technique to filter GRACE data and separate the principal components (PCs) of different periods. We performed data averaging over the large river basins of Russia. ... Fig 1. ... MSSA is a promising method for GRACE data processing, de-striping, filtering, and Principal Components (PCs) separation. ...
[ Текст ]  Ссылки http://lnfm1.sai.msu.ru/~tempus/english/science/articles/ZotovPoster_APSG2013.pdf -- 1294.1 Кб -- 07.11.2013
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12. GSAOI Component Supplier Links Page
RSAA Home . GSAOI Home . ... Other Links . ... Control Software Links . Optics Links . Micro-Optics Links . ... Optical Materials Databases . ... Rockwell Science Center home page . ... Santa Barbara Research Center home page . ... CCD-World home page . ... SDSU home page . ... EPICS home page . ... Optics Society of America . SPIE - Society for Optical Engineering . ... ZEMAX software (Focus Software page) . OPTICAD software (Focus Software page) . ... RedHat home page . ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/gsaoi/links/suppliers/index.shtml -- 22.7 Кб -- 02.10.2012
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13. Uncorrelated flux component
. Next: Type 0 Up: Stellar models Previous: Stellar models Contents . Subsections . Type 0 . Christian Hummel 2015-04-28
[ Сохраненная копия ]  Ссылки http://www.eso.org/~chummel/oyster/manual/node53.html -- 3.1 Кб -- 28.04.2015
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14. http://www.sao.ru/hq/katya/NDG/DVD/Talks/Yakobchuk.pdf
... Big ellipse: the region of the photometric analysis Smaller ellipses: the adopted inner boundaries of the Main Body and the C component Small circles: diffuse background objects, manually selected and removed from the photometry Uncleaned CMDs [V-I, I] of I Zw 18, obtained using Aloisi et al. (left) and Izotov & Thuan (right) datasets. ... Where is the 'halo'? Blue compact dwarf galaxy SBS 1415+435 Hubble Space Telescope / Advanced Camera for Surveys NASA, ESA A. Aloisi (STScI, ESA) et al. ...
[ Текст ]  Ссылки http://www.sao.ru/hq/katya/NDG/DVD/Talks/Yakobchuk.pdf -- 2259.0 Кб -- 24.02.2010
[ Текст ]  Ссылки http://mavr.sao.ru/hq/katya/NDG/DVD/Talks/Yakobchuk.pdf -- 2259.0 Кб -- 01.10.2009
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15. Power Spectral Analysis
Next: Results Up: High Resolution Measurements from Previous: Introduction . The first step in PSA is to Fourier transform the image and calculate the square modulus of the FT to generate the power spectrum, . ... Specifically, one excludes the very lowest frequencies where the large scale nonuniformities in the image have the greatest effect, and one limits the fit to a frequency range where the SNR is sufficiently high. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/stsci/meetings/irw/proceedings/nisensonp.dir/section3_2.html -- 7.4 Кб -- 16.04.1994
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16. http://mavr.sao.ru/hq/lizm/conferences/pdf/1987/1987_p27-p30.pdf
... For every level we have plotted the dependence between width and Lande factor and obtained the linear regression parameters: the inclination, the zero Lande factor line width and the correlation. ... Fig. 1. presents a model components, the intensity of which decreases (b) line with 10 and increases (c) to the center of spectral line (the field is 12 k6s). ... Our results show strong dependencies of line width on the level of width measurements. ...
[ Текст ]  Ссылки http://mavr.sao.ru/hq/lizm/conferences/pdf/1987/1987_p27-p30.pdf -- 41.5 Кб -- 24.02.2010
[ Текст ]  Ссылки http://www.sao.ru/hq/lizm/conferences/pdf/1987/1987_p27-p30.pdf -- 41.5 Кб -- 24.02.2010
[ Текст ]  Ссылки http://jet.sao.ru/hq/lizm/conferences/pdf/1987/1987_p27-p30.pdf -- 41.5 Кб -- 24.02.2010
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17. Astronomical Telescopes
... ASTRONOMICAL TELESCOPES . ... HOME . ... Home Products Telescopes Astronomical Telescopes . Recreational astronomical telescopes (ASTELE™) feature Maksutov Cassegrain or Maksutov Newtonian optical design. ... These telescopes (except ASTELE ™ 70, 95) are available in three configurations: OTA (Optical Tube Assembly), G (German Equatorial Mount) and EL (with motorized base). ... These telescopes are available in two configurations: OTA (Optical Tube Assembly) and G (German Equatorial Mount). ...
[ Сохраненная копия ]  Ссылки http://www.lomoplc.com/astrotelescopesDataPage.htm -- 12.5 Кб -- 09.04.2016
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18. http://www.stecf.org/conferences/adass/adassVII/reprints/brucal.ps.gz
... The software systems are described following the forward and back­ ward data flow to/from the satellite: starting from the Observation Pro­ posal reception and archiving, the long term observation scheduling up to the detailed weekly planning and telecommands sequence uplinking, and vice versa the scientific and housekeeping raw telemetry acquisition and archiving, quick look data analysis, data reformatting and distribution as a Final Observation Tape to the Observation Proposal PI. ...
[ Текст ]  Ссылки http://www.stecf.org/conferences/adass/adassVII/reprints/brucal.ps.gz -- 152.1 Кб -- 12.06.2006
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19. Some useful data about gains, NFs & compression points of Eddies box components
Subject: Some useful data about gains, NFs compression points of Eddies box components . ... Gain: ~ 21 dB . ... 1 dB compression: + 6 dBm . ... 1dB compression point for this system is ~ +15 dBm. For a clean(i.e., very linear) signal, we recommend staying 10 dB or more below the 1dB compression point, putting the "peak linear power" at +5 dBm. ... Assuming an LNA + Mixer gain of ~ 35 dB and with + 8 dBm mixer compression point, any input - 27dBm will begin to saturate the mixer. ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~phil/mbeam/iflo/eddiesbox.html -- 3.6 Кб -- 05.04.2008
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20. Астрономия в Санкт-Петербургском университете |
... В четверг, 14 апреля 2016 г., состоится семинар кафедры астрофизики. Повестка дня . ... Начало в 11 час.15 мин. Ауд. ... В четверг, 31 марта 2016 г., состоится семинар кафедры астрофизики . ... В четверг, 24 марта 2016 г. , состоится семинар кафедры. ... В четверг, 17 марта 2016 г. , состоится заседание кафедры. ... ОСП НИИ ПММ Национального исследовательского Томского государственного университета) . ... Copyright 2016 Астрономия в Санкт-Петербургском университете . ...
[ Сохраненная копия ]  Ссылки http://www.astro.spbu.ru/ -- 44.8 Кб -- 09.04.2016
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