... 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. ... In every point ij on the map we have time series Aij(tk) of length N. The trajectory matrix for every XAij should be build and incorporated into large block matrix X as follows: X Aij Aij (t0 ) Aij (t1 ) .. ... Sum of PCs 1-10 for particular rivers basins. ...

... 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. ...

Next: Accretion Disks with Up: StarsStellar Populations, Previous: Spectroscopic Analysis of . ... We present and discuss spatially resolved spectra of the accretion disk and the gas stream region as a function of distance from disk center, the spectrum of the uneclipsed light, and the radial temperature distribution in the ultraviolet. Keywords: Accretion disks, Cataclysmic variables . ... In this paper we report on the HST spectral mapping of the nova-like UX UMa. ...

... 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 . ...

Next: A New IRAF Catalog Access Tool for Astrometry . Up: Iraf Packages . ... Twofitlines is a tool developed within IRAF, optimized to be used with data containing multiple spectra along the spatial axis of the detector. A given spectral feature can be decomposed in one or several Gaussian components. ... A given spectral feature can be modeled using one or more components (currently only Gaussian profiles are available), . ... Close spectral features could be modeled simultaneously. ...

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

Irregular phenomena in the Earth Pole oscillation process and temporal variations of geopotential Valery Bondarenko, Vadim Perepelkin s The observed irregular phenomena in the Earth Pole oscillation process are very variety. ... These phenomena indicated in the IERS data are the "abnormal" fluctuation of the Earth Pole coordinates which owing to changing of the geodynamical parameters gives negative result in interpolation and forecast of the first approximation mathematical model. ... Fig. ...

Remote Visualisation System Server User Guide Last Modified: 02 March 2005 Introduction This document is a guide to running the RVS Server. ... These components are as follows. ... The $RVS_HOME/bin/rvs.sh script is used to start the RVS Server components. ... Stopping the RVS Server The following command can be used to stop all components executed using the 'rvs.sh start' command. shell% $RVS_HOME/bin/rvs.sh stop NOTE: This command DOES NOT stop processes started using the rvs-*.sh commands. ...

... We present the first results of the application of Positive Matrix Factorization (PMF) to the analysis of molecular line spectra. ... The principles of the method are discussed and some results from the analysis of -spectra from the Thumbprint Nebula are shown. ... The Positive Matrix Factorization . ... Thumbprint Nebula . ... Figure 1: a) The first 20 singular values of a matrix containing the 92 -spectra used in the analysis. b) An example of a factorization of rank one . ...

... 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. ...

... 1997: . As a result of comprehensive RATAN-600 studies of the prominence on the W limb of the Sun, its instant detailed radiation spectrum in the range from 1.7 to 32 cm (at 39 different wavelengths) was obtained for the first time. ... Own radio emission from the lunar crater Copernicus was registered for the first time at 1.38 and 2.7 cm wavelengths in the RATAN-600 observations of the Moon. This indicates a temperature increase in this crater up to 100K at the depth of 5m. Archive . ...

... So far, there are no corrections for the particle background component that may be different in the source and background regions. ... These calibrations, which are critically required, should tell us about the most reliable way to estimate the particle component in a given region. ... The most straightforward way will be to decompose the background input spectrum as the sum of a ``sky'' component and a particle component computed in the background region. ...

... 2014 July 21 . Spacecraft Rosetta Shows Comet has Two Components . Image Credit: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA . Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... About APOD | ...

... In collaborative work with David Garc?a Alvarez (an Observatory PhD student now at Harvard) and John Butler, an extensive study of the RS CVn binary HR1099 was completed leading to two papers; the first on Doppler imaging and the second on flare activity. Spectra for the Doppler imaging were taken at two different sites, Kitt Peak National Observatory (KPNO), Arizona, and Mount Stromlo Observatory (MSO), Australia, during the 1998 MUltiSIte COntinuous Spectroscopic (MUSICOS) campaign. ...

... Tpram - time of the PRAM instrument (aquisition computer) . ... Bx - DC magnetic field with a fixed amplitude calibration; X component . ... The color lines present FFT from the AC magnetic field (Waveform); Bwx, Bwy, Bwz - from the bottom. ...

... Tpram - time of the PRAM instrument (aquisition computer) . ... Bx - DC magnetic field with a fixed amplitude calibration; X component . ... The color lines present FFT from the AC magnetic field (Waveform); Bwx, Bwy, Bwz - from the bottom. ...

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

To: File From: Jon Hagen Date: May 31, 2002 Subject: Elevation drive pinion torques with new hydraulic damper system The Gregorian drive system uses 8 independent motor/transmission/drive pinion units. ... Each drive pinion therefore supports 1/8 of the Gregorian's downhill component of weight. ... The damping coefficient would be chosen such that the damping force produced at maximum rated slew speed would be equal to the torque needed to counteract gravity at 20 degrees, the maximum elevation angle. ...

... ESO Press Photo 19/98 . ... This is a colour photo from the VLT that shows NGC 4650A , a member of the so-called Centaurus chain of galaxies in the southern constellation of that name. ... As it is clear from this high-resolution picture, there are two main components, a lenticular-shaped galaxy (of type S0), surrounded by a knotty extended ring-like distribution of stars, dust and gas , nearly perpendicular to each other. ... This is the caption to ESO PR Photo 19/98 [JPG, 112k] . ...

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...