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1. RGS CCF Components
Next: XMM_MISCDATA Up: CCF Components Previous: Appendix: List of valid Contents . While some relevant RGS calibration data are given in the general-purpose CCF components . ... Some information concerning the maintenance of RGS CCF files is given below, though more details are available in the release notes that accompany new file releases and other technical notes. ... Use of CCF components by RGS SAS tasks . ... Purpose . Functionality . Ground calibration . Maintenance procedures . ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/calibration/documentation/CALHB/node770.html -- 25.1 Кб -- 20.09.2011
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2. Developing a Wavelet CLEAN Algorithm for Radio-Interferometer Imaging
... Previous: ESO C Library for an Image Processing Software Environment (eclipse) . ... A new CLEAN-type algorithm searches for model components not in the dirty image but in the multi-resolution wavelet transform of the dirty image based on the dirty beam. ... The improvement of this prototype Wavelet CLEAN, which does convolve with the dirty beam, can be attributed to a suppression of noise and aliasing in the dirty image by use of information in the sidelobes of the whole image domain. ...
[ Сохраненная копия ]  Ссылки http://www.adass.org/adass/proceedings/adass00/P3-08/ -- 12.3 Кб -- 29.05.2001
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3. Deconvolution with CLEAN
Next: The Clark CLEAN Up: Image Deconvolution Previous: Introduction . The CLEAN algorithm (H?gbom 1974) (A&AS 15, 417) represents the image as a number of point sources in an otherwise empty field of view. ... The H?gbom CLEAN algorithm looks for the brightest (in an absolute sense) pixel (called a CLEAN component) in a specified region in the image (called the CLEAN window which must include all the real emission in the image). ... This subtracted image is called the residual image. ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/computing/software/miriad/userguide/node112.html -- 6.0 Кб -- 10.04.2016
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4. 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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5. Iron abundance in the atmospheres of components of the binary system 41...
... Iron abundance in the atmospheres of components of the binary system 41 Draconis . ... 5B Iron abundances, FeI and FeII lines equivalent widths, and microturbulence velocities were found for the components of a highly eccentric spectroscopic and interferometric binary system 41 Dra from high resolution spectra obtained close to the periastron. Weighted mean values of iron abundances in the atmospheres are lgN(Fe) = 7.66 ± 0.03 and lgN(Fe) = 7.72 ± 0.03 for the component a and b, correspondingly. ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/balega/PUBL_BAL/PUB_2003/2003BSAO_55_5.htm -- 12.1 Кб -- 01.02.2005
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/balega/PUBL_BAL/PUB_2003/2003BSAO_55_5.htm -- 12.1 Кб -- 24.02.2010
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/balega/PUBL_BAL/PUB_2003/2003BSAO_55_5.htm -- 12.1 Кб -- 24.02.2010
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6. 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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7. Technique
Next: Examples and Photometric Up: Image Restorations of High Previous: Introduction . ... where is the intensity of the point sources (mainly zero apart from -functions at the positions of designated sources) and is the intensity of the background. ... When is zero the objective function becomes the same as that of the standard Lucy-Richardson technique. takes the form of an entropy expression which may be calculated in two ways, relative to a flat background: . ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/stsci/meetings/irw/proceedings/hookr.dir/section3_2.html -- 5.8 Кб -- 15.04.1994
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8. Software Maintenance Manual
... Created: 23 February 2001 . ... SOFTWARE MAINTENANCE MANUAL . ... 9 January 2001 . ... Note: in the final document, the table of contents will be to third level] . The Software Maintenance Manual describes the procedures for installation and maintenance of the software for the Gemini Near-infrared Integral Field Spectrograph (NIFS). ... Section 19.4.3 of the document “Programmatic Requirements for Gemini Instrumentation Development” states the requirements for the Software Maintenance Manual . ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/nifs/manuals/man0003.htm -- 139.3 Кб -- 06.09.2001
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9. Inference of Coefficients for Use in Phase Correction Bojan Nikolic web pages
... Bojan Nikolic web pages (r. 329) . ... 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. ... Inference of Coefficients for Use in Phase Correction . ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...
[ Сохраненная копия ]  Ссылки http://www.mrao.cam.ac.uk/~bn204/alma/memo-infer.html -- 14.9 Кб -- 04.04.2016
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10. Prediction technique
Geomagnetic storms and substorms are a natural hazard similar to hurricanes, floods etc. ... Solar and geomagnetic activity also probably influences the Earth's climate and human health. ... Under southward directed IMF the Earth's magnetosphere is open to input from the solar wind flow. ... Since practical importance of solar wind measurements was recognized, a number of approaches was developed for prediction of the geomagnetic activity basing on the solar wind data. ...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/apetruko/forecast/epsilon.html -- 7.5 Кб -- 27.01.2000
[ Сохраненная копия ]  Ссылки http://www.cosmos.ru/forecast/epsilon.html -- 7.5 Кб -- 27.01.2000
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