... Described in detail are its enhanced functions of Poisson noise only case handling and subpixelization technique; improved algorithms for maximization inґ cluding the preconditioned conjugate method, accurate Newton method, the accurate oneґdimensional search, and the model updating technique. ... Poisson noise only case handling. ... By default, in the case of Poisson noise only (poisson=yes) the accurate Newton method is used, otherwise (poisson=no) the preconditioned conjugate method is used. ...

Еще в разделе: (Показать все результаты (>1993) - www.adass.org/ )

• Modelling Spectro-photometric Characteristics of Nonradially Pulsating Stars
• A Method for Minimizing Background Offset Errors When Creating Mosaics
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits

... The main purpose of this task is the correction for attitude drifts using the dispersion coordinate system. The dispersion coordinates are defined based on the position and on the orientation of the RGA, and have two components: the dispersion angle BETA and the cross dispersion angle XDSP . ... This is called reference attitude and basically means that this is the on-axis sky position to which the telescope points after the attitude drift correction was performed. ...

Еще в разделе: (Показать все результаты (>29788) - xmm.vilspa.esa.es/ )

• Calculating the PNT keywords

... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... Each such choice is known as a frame of reference . Some possible frames are -- the interior of the airliner, . ...

Еще в разделе: (Показать все результаты (>735) - www.iki.rssi.ru/ )

• How Orbital Motion is Calculated
• Vectors
• Space Physics Group of Oulu

... The models provided are: . abs - absorption of x-rays by neutral gas with solar abundances. parameter 1 = . ... parameter 2 = . ... normalization - logarithmic value of the flux density at 1 keV in units of keV cm -2 s -1 keV -1 . ... normalization - logarithmic value of the normalization of the gaussian in units of keV cm -2 s -1 . ... absorption ( params )* model ( params ) . ... A single value for the normalization (i.e., fixed normalization) will force the program to use that value. ...

Еще в разделе: (Показать все результаты (>2485) - hea-www.harvard.edu/ )

• *xflux, hxflux* - Calculation of X-ray Flux
• Marker Analysis Routines in SAOtng
• The AstroStat Slog Blog Archive Survival Analysis: A Primer

... Bojan Nikolic web pages (r. 329) . ... Analysis of (radio) spectra . I describe an approach to fitting and comparison of radio spectra based on Bayesian analysis and realised using a new implementation of the nested sampling algorithm. ... I this paper I cover the theoretical background, the algorithms used and the implementation details of the computer code. I also briefly illustrate the method with some previously published data for three near-by galaxies. ... Paper I: Method . ...

Еще в разделе: (Показать все результаты (>1238) - www.mrao.cam.ac.uk/ )

• PPEUC Programme - Cosmic Microwave Background Workshop
• Analysis of surface error distributions through Moon (or Sun) beam cuts Bojan
• Preliminary results of OOF holography at the GBT

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. ...

Еще в разделе: (Показать все результаты (>14339) - www.stsci.edu/ )

• Mathematical Analysis of the Iterative/Recursive Algorithm
• Analysis of in B-Type Stars
• FOC Image Restoration Using Calculated PSFs on Parallel Architectures

... The first EGRET catalog ([ Fichtel et al. 1994b ]) used the galactic diffuse gamma radiation model of Bertsch et al. (1993b). ... For the results presented by Bertsch et al. (1993b), the HI and W radio data were deconvolved by integrating the radio data over a velocity interval determined by the endpoints of each distance interval ( ). ... The Galactic radius limit used in the model has been increased to 30 kpc. ... The CR electron spectrum of Fichtel et al. (1991) was used by Bertsch et al. ...

Еще в разделе: (Показать все результаты (>1764) - www.sao.ru/ )

• Correspondence Analysis
• Operations on Tables
• Radio patrol survey by Gregory and Taylor

Next: Displaying Spectral Cubes Up: Image Analysis Previous: Polarimetric Analysis Tasks . The task imdiff can be used to compare two images. ... You can use the self-explanatory task shifty for large integral pixel shifts. ... It may be that you would like the image to be written out with histogram equalisation applied, rather than it just being computed but not saved by the display task. ... Next: Displaying Spectral Cubes Up: Image Analysis Previous: Polarimetric Analysis Tasks Miriad manager . ...

Еще в разделе: (Показать все результаты (>9254) - www.atnf.csiro.au/ )

• casacore: casa::Aberration Class Reference
• mopfix
• uvfmeas

... 22.Reference Frames . ... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... How do observations differ in the two frames--the airliner cabin and the Earth? ...

Еще в разделе: (Показать все результаты (>1609) - www.cosmos.ru/ )

• INTERBALL TAIL PROBE SITUATION ANALYSIS
• How Orbital Motion is Calculated
• INTERBALL AURORAL PROBE SITUATION ANALYSIS

Astronomical Data Analysis Software and Systems VII ASP Conference Series, Vol. ... A Wavelet Parallel Code for Structure Detection A. Pagliaro Istituto di Astronomia dell'Universit?a di Catania U. Becciani, V.Antonuccio and M.Gambera Osservatorio Astrofisico di Catania Abstract. We describe a parallel code for 3ґD structure detection and morphological analysis. The method is based on a multiscale technique, the wavelet transform and on segmentation analysis. ... Segmentation analysis. ...

Еще в разделе: (Показать все результаты (>246) - www.stecf.org/ )

• http://www.stecf.org/conferences/adass/adassVII/reprints/pencew.ps.gz
• http://www.stecf.org/conferences/adass/adassVII/reprints/daszynskaj.ps.gz
• http://www.stecf.org/conferences/adass/adassVII/reprints/grochevae.ps.gz

There are many ordinary/partial differential equations/systems describing various phenomena in physics, mechanics, chemistry, biology, sociology, etc. ... Prerequisites: 1 semester "Advanced Calculus", 1 semester "Linear Algebra". Optional: 2 semester "Advanced Calculus", 2 semester "Linear Algebra", 1 semester "Functions of Complex Variables", elements of the functional analysis and the ordinary differential equations theory. ... Laplace transform for linear differential equations . ...

Еще в разделе: (Показать все результаты (>908) - www.mccme.ru/ )

• Workshop on geometric analysis and spectral theory. Abstracts
• Yu. Burman: Publications
• IUM10 conference: A.Sergeev

... the radiative transfer equation (RTE) for the randomly-irregular magnetized plasma has been derived on the base of general grounds of the multiple scattering theory . ... Solutions of several absolute tasks of the scattering theory have been obtained (on the optical depth of the ionospheric plasma layer, on the value of radio wave anomalous attenuation, on anomalous refraction, on the backscattered signal intensity for the source being placed within a plasma layer). ...

Еще в разделе: (Показать все результаты (>63) - ip.rsu.ru/ )

• Anomalous Absorption Theory
• POWER SPECTRUM OF THE IRREGULARITIES AND IT'S FIXING

... There are a lot of computer codes simulating this scattering and freely available in the Internet (see e.g. links on our JPDOC page ). ... The code and input file are available in the directory . ... A slightly modified code of Barber Hill with a C-shell and input files is available in the directory . ... The code, input and test output files are available in the directory . ... See also readme file. file. ... The code, input file and their description (a TeX file) are available in the directory . ...

Еще в разделе: (Показать все результаты (>323) - www.astro.spbu.ru/ )

• Rayleigh-Debye-Gans approximation (RDG)
• Hybrid and simple analytical approximations
• Database of Optical Properties -- Level: subsubpage

... 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. ...

Еще в разделе: (Показать все результаты (>7) - www.izmccd.puldb.ru/ )

Up: DATA ANALYSIS Previous: More Analyz Stuff . In this section we describe some useful routines for quick-look on-line analysis of your data. For a complete description of the routines, and for a description of analyzing HI spectra, look at the Spectral Line Appendices. ... cd a9999 [or whatever your project number is . ... corinfo = List the current set-up parameters. ... That is, if you want to look at the second data dump of scan number 57401, you `just' type ``corget 57401.00002". ...

Еще в разделе: (Показать все результаты (>2279) - www.naic.edu/ )

• Orbits in the period / acceleration plane
• Rotang - IDL procedure for calculating the optimum rotation angle for ALFA
• DATA ANALYSIS

... We have calculated the binary coalescence rate with time using the ``Scenario Machine'' code, which allows us to simulate evolution of large ensembles of binary stars in an artificial galaxy using a Monte Carlo method (see Lipunov 1992, Lipunov et al 1994, 1995 and references therein). ... The source evolution in a galaxy with given star formation rate is thus calculated as , where is the redshift at the turn-on of star formation, which is the second important parameter of the model. ...

Еще в разделе: (Показать все результаты (>455) - xray.sai.msu.ru/ )

• Normal star evolution
• Calculation of Binary Neutron Star Coalescence Rates
• The evolution equation

... The SDSS 2.5-m primary mirror is supported in a manner similar to the Apache Point Observatory 3.5-m telescope primary. ... The axial support is provided by 48 air pistons. The pistons have the same diameter thereby applying equal forces with the same air pressure. ... Each group supports a 120? sector of the mirror. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of actuators (green circles) These actuators apply forces (10*cos2 N) to correct astigmatism. ...

Еще в разделе: (Показать все результаты (>472) - www.apo.nmsu.edu/ )

• Fiber-optic plug rotation
• Deforming Plug-plates
• Primary mirror support

The Arcetri Spectral Code (Landi and Landini 2002) allows to evaluate the spectrum of continuum and line radiation emitted by hot and optically thin plasmas in the spectral range 1-2000 Angstrom. The Code is composed by a large database of atomic data and transition probabilities for calculating spectral line emissivities and a suite of fortran programs able to evaluate free-free, free-bound and two-photon continuum radiation. ... Landi, E., Landini, M., 2002, A , 384, 1124 . ...

Еще в разделе: (Показать все результаты (>8658) - www.arcetri.astro.it/ )

• The Arcetri Spectral Code - E.Landi and M.Landini (1998)
• CHIANTI: A Database for Astrophysical Emission Line Spectroscopy
• Cannibal Stars Cause Giant Explosions in Fornax Cluster Galaxy (ESO Press

... 8, ``Celestial Mechanics'', 2002 An improved analytical technique for accurate calculation of satellite motion perturbations due to the Moon/Sun/planets S. M. Kudryavtsev Sternberg Astronomical Institute, Moscow, Russia An improved analytical technique for accurate calculation of satellite orbit perturbations caused by attraction of the third body (the Moon, the Sun, planґ ets) is presented. ... As the perturbing bodies we considered the Moon, the Sun, Venus, Jupiter, Mars, and Saturn. ...

Еще в разделе: (Показать все результаты (>568) - www.ipa.nw.ru/ )

• IAA EOP Service
• Keywords_60
• (Untitled)

... X-Ray Structural Analysis . ... The course introduces the basic principles of diffraction analysis of crystal atomic structure and the basic concepts of state-of-the-art atomic crystallography. ... X-ray crystal diffraction. тАЬGeometricalтАЭ theory of diffraction by three-dimensional scattering center grating. ... Systematic X-ray reflection extinction related to Bravais lattice type, screw axis, glide-reflection planes. ?аFourier synthesis as a method of crystal atomic structure analysis. ...

Еще в разделе: (Показать все результаты (>1028) - www.issp.ac.ru/ )

• LSR ISSP RAS
• Department of Solid State Physics MIPT