XMM-Newton Science Analysis System . ... compute the background lightcurve of the problem event file applying the following selection expression CCDNR==9 AND (XDSP_CORR < -3.E-4 OR XDSP_CORR > 3.E-4) From the lightcurve, calculate the fraction of the total time for each of the pre-defined levels of background. Compute the background template spectra by weighting each of the template spectra by the corresponding factor calculated from the ligthcurve. XMM-Newton SOC/SSC -- 2008-07-02 ...

Next: Auxiliary utilities Up: MIDAS utilities for Previous: Time series analysis . The commands COVAR/TSA serves for the calculation of the covariance and autocovariance functions. ... COVAR/TSA -- . ... Edelson and Krolik's (1988) method is used for the estimation of the cross correlation function (CCF) of unevenly sampled series. ... DELAY/TSA -- . delay analysis with interpolation: The command computes the time lag function for two time series by the Press et al. (1992) method. ...

... A technique allowing automatic representation by a relatively small number of independent parameters based on the principal component analysis of data sequences is presented. ... In recent years the spectrum of observed astronomical data can be characterized as greatly varied. ... In this instance, the problem of initial description and classification of newly-observed data becomes most urgent, especially if there is a lack of preliminary observational material and theoretical expectations. ...

... Archives . ... MADS] ARCH . ... arxiv:0906.3662] The Statistical Analysis of fMRI Data by Martin A. Lindquist . ... This review paper offers some information and guidance of statistical image analysis for fMRI data that can be expanded to astronomical image data. ... This role can range from determining the appropriate statistical method to apply to a data set, to the development of unique statistical methods geared specifically toward the analysis of fMRI data. ... Chandra Blog . ... Chandra Images...

... In addition to time, frequency, and scale, there are two other coordinate axes within this transform space: shear-in-time (obtained through convolution with a q-chirp) and shear-in-frequency (obtained through multiplication by a q-chirp). Signals in this multidimensional space can be obtained by a new transform which we call the ``q-chirplet transform'', or simply the ``chirplet transform''. ... CHIRPLET TRANSFORM SUBSPACES . ... Relationship Between Auto Chirplet FF Plane and Radon Transform . ...

... Recognition of Anomalous Events S. Monai 1,2 and F.Pasian 2 1 Osservatorio Astronomico di Brera Merate, Italy 2 Osservatorio Astronomico di Trieste, Italy Abstract. We present an original algorithm for the recognition of anomalous events in a CCD frame (i.e., cosmic hits, bad pixels etc.) ... Raw images, as read from a CCD, are often a#ected by some events which are revealed by anomalous pixel values, i.e., single saturated pixels or pixels at zero intensity (also named hot or bad pixels). ...

A very important stage in a story of formation of any new science is the shift from discussion of situation which are possible but do not occur in practice due to some reason to recognition of real phenomena of interest. ... We suggest to consider computer viruses as this new specific form of life which is coming in the contact with our form of life. ... Computer life has been created by human being, the role of independent evolution of computer viruses seems to be still negligible. ...

... Galaxy Evolution home . Cavendish Astrophysics . ... Cosmological evolution of star-forming galaxies . ... Local Information . ... Mappings: Mappings is a code for the calculation of (optical) line ratios under a wide variety of conditions Mappings (Binette) . ... ZEUS is the fluid dynamics code we use for our simulations and is available on the Beowulf cluster and the Suns. It comes in a variety of flavours: ZEUS-3D full 3D code with lots of other options; can also run 2D simulations . ...

Fringe parameters are the complex visibility, the squared visibility amplitude, and the total count rate. These can be computed from bincounts using the functions fringevis , fringevissq , and fringenphot . v=fringevis(bincounts(1,*,*,*)) . ... Instead of computing the modulus of the complex visibility, we use a different estimator for the squared amplitude. ... I have verified with simulated fringe frames that this procedure results in the correct squared visibility amplitudes. ...

... We also identified two other spectrally unique terrains, corresponding to the northern polar ice cap, and to the southern winter polar hood. Comparisons with mineral spectra indicate the possibility of different H 2O- or OH-bearing (i.e., hydroxides and/or hydrates) minerals existing both in northern Acidalia and in the nearby intermediate albedo terrain. Hydrated minerals do not appear to be spectrally important components of the southern hemisphere dark terrains imaged by HST in 1997. ...

... A well known problem with EOP prediction is that a prediction strategy proved to be the best for some testing period and prediction length may not remain as such for other period of time. In this paper we consider possible strategies to combine EOP predictions made using different analysis techniques to obtain a final prediction with the best accuracy corresponding to the least prediction error between input predictions. ... C2 ­ best previous prediction for given length. ...

The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the following articles and reports, which are available online . Mills, D.L. Internet time synchronization: the Network Time Protocol. ... Mills, D.L. Network Time Protocol (Version 3) specification, implementation and analysis. ...

Next: Smoothing the Velocity Axis Up: Analysing Spectral Cubes Previous: Introduction . ... The moment axis should be either the first or third in the cube (e.g. vxy or xyv order). You should use reorder if you want the moment of the second axis for some reason. ... Thus, the zeroth moment corresponds to the integrated intensity over velocity, the first moment corresponds to the intensity weighted velocity, and the second moment corresponds to the intensity weighted velocity dispersion squared. ...

I am the system manager, that is, I am responsible for the computing resources at the Dipartimento di Fisica e Astronomia in Arcetri , Florence. You can find information about the computing resources of the Department here . Since our LAN is shared with the Astrophysical Observatory of Arcetri you can also consult the corresponding page of the Observatory for further information. ... In other words, my commitment is to keep the computers up and running and our users quiet and satisfied. ...

Results of analysis . ... IAA EOP Service . ... EOP series are regularly submitted to the IERS, and also are available at the IAA EOP Service page. EPN coordinate time series . EUREF Permanent GPS Network (EPN) coordinate time series is computed from analysis of available EUREF weekly solutions. ... Second solution is based on independent combination of individual EPN Analysis Centers' solutions . ... USNO GPS Timing Operations . ... GPS Time Series . ... EPN : European Permanent GPS Network . ...

... Samara State Aerospace University Staff Fursov Vladimir Alekseevich . ... Zherdev D. A, Fursov V. A. Support plane method applied to ground objects recognition using modelled SAR images // Applications of Digital Image Processing XXXVIII, , Сан-Диего, SPIE, 2015, P. 1-7 . ... Bibikov S. , Nikonorov A. , Skidanov R. and others. ... Nikonorov A. V. , Bibikov S.A. , Fursov V.A. Boundaries Detection and Color Correction of Shadows in Color Images // Pattern Recognition and Image Analysis. ...

Analysis of general features of the chaotic system behavior and investigation of the properties of concrete chaotic sources. ... Analysis of information properties of chaotic systems and chaotic oscillations as concrete objects for information processing and comunications. ... This hypothesis gives a possibility of designing simple mathematical structures accomplishing various processes of information processing using chaos. ... Activities | ... E-mail: chaos@mail.cplire.ru ...

. N OTE: . Only clusters with R<60 kpc were used to compute the spatial parameters and metallicity gradients for all subsystems except the corona. The numbers in parantheses give the number of clusters for which the corresponding parameter is known. The X O scale length of the old halo is strongly distorted by the observed asymmetry of the distribution of the corresponding clusters projected onto the XY plane ( Fig. 4А ) . discussion in the text | previous table .

Альтернативный форум . Scientific.ru Все форумы . ... Chernov V.M. Non-Archimedian Normalized Fields and Аlgorithms for Two-Dimensional Discrete Fourier Transform. Pattern Reсogn. and Image Analysis.- ... Чернов В. М. О точности вычисления дискретной круговой свертки в нормированных полях. ... Чернов В.М. О дискретном "метапреобразовании" в кольце аделей глобального поля. ... Chernov V.M.,Shabashev A.V. Non-Archimedian normalized fields in texture analysis tasks. ... V.M.Chernov. ...

The longterm orbit evolution and ballistic lifetime 1995 - 2000 . The annual distribution of the key magnetospheric regions covered by the orbit in 1995 - 2000 . ... As a result of this evolution the Tail probe will stop his ballistic life in the middle October 2000. ... Back to the Top . ... Back to the INTERBALL Home Page . Back to the IKI Satellite Situation Center (SSC) Home Page . Back to the Space Research Institute (IKI) Home Page . ... Satellite Situation Center, Senior Scientist . ...