Next: Equations of condition Up: Extinction and transformation Previous: Extinction and transformation . Bias can also be introduced by improper fitting procedures. For example, the reduction program known as SNOPY, used for many years at La Silla and also at La Palma, uses a simple iterative technique in which some subsets of the parameters are solved for, while others are held fixed; then the ones last solved for are held fixed, while the ones previously fixed are redetermined. ...

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Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

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• Solar Physics
• Space Geodesy

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

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• B. Ts. Bakhshiyan, " L- . MV- and E-optimal design of experiments: theory and
• V.G. Petukhov (Khrunichev State Research and Production Space Center).
• CURRENT ASPECTS OF REMOTE SENSING OF EARTH FROM SPACE

... Forum: The Linux Kernel Hackers' Guide . Keywords: kernel tuning, file handles, Bus error . ... In a recent comp.os.linux. article I saw a reference to tunable kernel parameters, which I think may help me with a problem I'm having with expireover on a Debian 1.2, Inn 1.4 unoff4 news server. ... I'm runnming 2.0.27, 64mb ram, raid 0 on three 2gb drives for /var/spool/news. ... I've been looking for some docs on tuning kernel parameters like file handles, and can't seem to find it. ...

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• Problem creating a new system call

... Список публикаций соискателя (1) The inverse problem for perturbed harmonic oscillator on the half-line with a Dirichlet boundary condition. Chelkak, D.; Korotyaev, E.: Ann. ... Chelkak, D.; Korotyaev, E.: Int. Math. ... 4) Inverse problem for harmonic oscillator perturbed by potential, characterization. ... Math. ... 5) Inverse problem for harmonic oscillator perturbed by potential. ... D.Chelkak, E.Korotyaev: The inverse problem for perturbed harmonic oscillator on the half-line. ...

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• http://www.mccme.ru/lifr/greb/talks/Zabrodin.pdf
• Conference "Global Fields"
• Equations of Mathematical Physics

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

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• A New Stable Method for Long-Time Integration in an N-Body Problem
• ADASS 2003 Conference Proceedings
• A Method to Test the Adequacy of a Model to Observations

... Classes . ... This class gives Proxy to Fitting connection. ... Generic base class for least-squares fit. ... Internal Fitting_module classes and functions. ... The Fitting module holds various classes and functions related to fitting models to data. ... The above fitting problems can usually be solved by directly calling the fit() member function provided by one of the Fit classes above, or by gradually building the normal equation matrix and solving the normal equations ( solve() ). ...

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• casacore: scimath/Fitting.h Source File
• MINPAUSE
• List of Frequency File Parameters

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Likelihood Analysis.. ... Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, U.K. Max Tegmark . ... We discuss the problems of applying Maximum Likelihood methods to the CMB and how one can make it both efficient and optimal. ... A much fuller account of most of this work is available ( Tegmark, Taylor & Heavens (1997) ). ...

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• ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
• Simple logging of scripts and their parameters Bojan Nikolic web pages (r. 329)

ES 255: DETECTION AND ESTIMATION THEORY & APPLICATIONS (Fall 2005) Teaching Staff Prof. Patrick J. Wolfe (Instructor) Office Hours: Tuesdays 2:30-4pm or by appointment, Maxwell-Dworkin 129 E-mail: patrick@deas.harvard.edu Tel: 617.496.1448 (Teaching Fellow TBA) Logistics Location: Maxwell Dworkin 221 Meeting Time: Tu., ... Tuesday Oct 25: M-ary detection in white Gaussian noise, Sensitivity. ... Tuesday Nov 1: Non-Linear Estimation (continued), Introduction to colored noise problem. ...

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• http://hea-www.harvard.edu/AstroStat/astro193/VLK_slides_mar02.pdf
• The AstroStat Slog parameter estimation
• Comments on: The Banff Challenge [Eqn] By: hlee By: Paul B By: vlk By: brianISU

... 8, ``Celestial Mechanics'', 2002 Solution stabilization algorithms for the estimation of small bodies orbital parameters L. E. Bykova, V. P. Titarenko Tomsk State University, Tomsk, Russia Sometimes there is not enough information for the correct improvement of the orbits of the Solar system small bodies. ... Algorithms have been constructed on the basis of a linear least squares method using additional a priori information about the solution. ... E., Hanson R. J. Solving Least Squares Problems. ...

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• http://www.ipa.nw.ru/conference/2002/sovet/PS/PROKHOR.PS
• http://www.ipa.nw.ru/conference/2002/sovet/PS/GAYAZOV.PS
• Keywords_146

... December 21, 1997 . ... Advantages are briefly discussed of gaining in spectral resolution, which is accompanied by losses in signal level, as compared with the attempts to improve the accuracy of measurement of line parameters by means of rising the S/N ratio alone with increasing the exposure time. To partially solve the problem of observations of faint objects at the BTA a new design echelle spectrometer is proposed. high resolution spectroscopy . ...

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• Optimization of spectroscopic observations
• RESEARCH PROBLEMS of the LRS
• Search for distant radio galaxies in SAO

In this chapter we will consider an example of visual expert system written on the Actor Prolog language. ... There are a lot of methods of oil field bed stimulation that increase output of the oil production: thermal, physical-chemical, gas, microbiological, and others. ... Fig. ... The Top-Most diagram consists of three blocks: the "Describe parameters of hydrocarbon field" block, the "Check adaptability of existed methods of oil production" block, and the "Display solution" block. ... Gas methods. ...

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• SYNCHRONIZATION OF DRIVE-RESPONSE SYSTEMS ON CONDITION OF A LARGE MISMATCH OF
• Atmospheric influence on the different radioengineering systems functioning.
• Research Activities of InformChaos Lab.

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Here we present the ionospheric parameters variations for quiet conditions. ...

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• East Siberian Center of Earth Ionosphere Research. Chirp ionosonde.
• East Siberian Center for the Earth's Ionosphere Research. Problems of the IS
• East Siberian Center for the Earth's Ionosphere Research. Capabilities and

... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...

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... Chapter 1. ... Problems of observational radio cosmology (6) . ... Analysis of radio astronomical data (32) . ... Data analysis system (33) . ... Actuality, goals and results to depend (45) . ... Interactive processing of continuum radio spectra of radio sources (72) . ... Creation of the astrophysical catalogs data base CATS and its application for selection and analysis of radio galaxy samples (112) . ... Data and methods (176) . ... Results of analysis of known radio galaxies data (179) . ...

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• Radio Sources Parameters

... 2014 Irkutsk-Listvyanka, Russia G r o u p language English Theoretical round General note. ... Footstep of babr. ... Draw in real scale a picture of image of the sunspot "footstep of babr" (see picture and condition of the previous problem) obtained in the focal plane of the LSVT. ... Orion's Belt. ... Estimate at what distance from the Babr the Penguin was, if the shining of the "fourth star of Orion's Belt" approximately corresponds to that of the three others in the picture. ... ISS near Zenith. ...

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• http://www.issp.ac.ru/iao/apao/2014/problems/pages01-02_ap14_t_en_a.pdf
• The XX International Astronomy Olympiad, Problems
• IV International Astronomy Olympiad, Problems to solve

... Basic Observables: Zero-differenced phase and code ionosphere-free combinations of global GNSS network stations, corrected by P1-C1 satellite code biases (cc2noncc), daily observations with 30 seconds sampling rate Sites coordinates : IGb08 reference frame coordinates and velocities Displacements: solid tides, ocean loading, pole tide loading (IERS 2010) Geometric model : Receivers antennas eccentricities, absolute receiver and ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/huang.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/kurdubov.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf

Hideyuki Saio Simon Jeffery are exploring models for the evolution of stars formed by the merger of two white dwarfs. The attached movie provides a simulation of the major events involved in the merger process. ... An initial binary system consists of two white dwarfs of masses M 1 and M 2 (given) with an orbital period ( P ). ... We adopt a simple expression for the white dwarf radius as a function of mass (in solar units): . ... The merged star evolution is simulated by a quadratic expansion . ...

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• UNSOLVED PROBLEMS
• Unsolved Problems
• SCL Sfit SLV Commands

... L-Wide . ... Receiver History . ... Available Filters: . ... Use with e.g. filter 5) NOTE 2 1120-1220 3 1230-1470 4 1550-1820 5 1100-1800 6 1360-1470 7 1320 hipass NOTE 8 1180-1280 9 1280 hipass (ext Output unit. ... Consequently, the calibration for data collected using the hipass 1320 and the hipass 1370 filters only will be mis-calibrated (i.e. by using the opposite polarisation calibration data). ... It is now possible to select any bandpass filter that is not in the 1320 hipass band. ...

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• usrProjects
• CIMA Common Problems
• pdev_birdies_25jun07

Next: Model of clusters Up: paper2 Previous: paper2 . ... It allows estimating different microphysical properties of scatterers (size, complex refractive index, shape, etc.) from measured characteristics of the scattered radiation. ... The complexity of the direct problem depends on its input parameters characterizing the shape, size and structure of the scattering particle. ... Next: Model of clusters Up: paper2 Previous: paper2 root 2003-04-11 ...

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• Integral equation method
• Anomalous diffraction approximation (AD)
• Rayleigh and Rayleigh-Gans-Stevenson approximations