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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• Outline of the Available Methods
• Wavelength calibration
• ASTROMET/COMPUTE

... 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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• ADASS 2003 Conference Proceedings
• A Computer-Based Technique for Automatic Description and Classification of
• A New Stable Method for Long-Time Integration in an N-Body Problem

... 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
• Patching problems

... Posts tagged ?parameter estimation? ... Leccardi & Molendi (2007) have a paper in A&A ( astro-ph/0705.4199 ) discussing the biases in parameter estimation when spectral fitting is confronted with low counts data. Not surprisingly, they find that the bias is higher for lower counts, for standard chisq compared to C-stat, for grouped data compared to ungrouped. ... Tags: bias , C-stat , chi-square , chisq , Cstat , Fitting , parameter estimation , Peter Freeman , spectra . ... 1 Comment . ...

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• Comments on: The Banff Challenge [Eqn] By: hlee By: Paul B By: vlk By: brianISU
• The AstroStat Slog Blog Archive The Banff Challenge [Eqn]
• Comments on: missing data By: Alex By: vlk

... Dr. Ravil Nazirov is the head of the workshop, and Andrew Ananjev is the secretary of the workshop. ... The workshop is used to be held in the last decade of the month, preferably on Tuesdays. ... The next session will take place October 29, 1996 . ... There is "CONPAS" mailing list which you can join to discuss issues of problem solving and to be automatically notified of important dates and decisions with respect to the coming sessions. ... Secretary of the Workshop: Andrew Ananjev . ...

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Next: Solution Up: Simultaneous Phase Retrieval and Previous: Data Model . Following Snyder, Hammoud, and White (1993), we simplify the noise model by defining the modified data . ... In this case, the modified data are approximately equal in distribution to a Poisson process whose mean function is . Therefore, the pseudo-log-likelihood takes the form . ... An explicit, closed form solution to this problem is not known. ...

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• HSP Data Handbook
• Description of the Reconstruction Methods
• Conclusions

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).
• Prediction technique

ChangeLog for epicproc ---------------------- Version 2.9.13 - 2006-06-23 (AI) ----------- +(lib/EpicProc.cc, config/epproc.par, config/emproc.par) New parameter "rungtimerge" added to the "Filter and Merge" section. By default set to "no". Documentation updated. ... Version 2.9.9 - 2005-07-22 (AI) ----------- + New two parameters added to emproc: correctcti and correctgain. ... New parameter "runepreject" added (set to no by default). epexposure task has been added to the process. ...

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• http://xmm.vilspa.esa.es/sas/6.0.0/doc/omfchain/ChangeLog
• http://xmm.vilspa.esa.es/sas/7.1.0/doc/omregion/ChangeLog
• http://xmm.vilspa.esa.es/sas/5.4.1/doc/omfchain/ChangeLog

... AMPLE (Adaptable Minor Planet Ephemerides) is integrated software package to deal with a number of problems concerning minor planets with the aid of IBM-type personal computer. ... compiling a list of all numbered minor planets which can be seen at certain moment within specified sky region and visualization of their mutual positions; . ... As AMPLE is able to reproduce virtually any table of "the Ephemerides of Minor Planets" , it may be considered as computer version of the EMP. ...

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• (Untitled)
• Keywords_146
• Laboratory of minor bodies of Solar system

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)
• Bojan Nikolic -- Nested sampling modelling of Star-Formation History of the

Computer Ephemeris for 2014 from DE200/LE200. Orbital parameters of the Sun. Date Mean Perigee Mean Paral Aberrat Epsilon Nutat longitude longitude anomaly Dec 24 272.6887 283.1787 349.5100 8.941 20.832 2326 6.72 -8.19 Jan 3 282.5451 283.1792 359.3660 8.943 20.837 6.71 -8.18 13 292.4016 283.1796 9.2220 8.942 20.834 6.76 -8.11 23 302.2581 283.1801 19.0780 8.935 20.818 6.87 -7.99 Feb 2 ...

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• Sun orbital parameters for Computer Ephemeris for 2015 (DE200/LE200).
• Sun orbital parameters for Computer Ephemeris for 2016 (DE200/LE200).
• Theoretical Astrophysics

... 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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• Spectral energy distribution
• RESEARCH PROBLEMS of the LRS
• Search for distant radio galaxies in SAO

... The Radon transform (also known as the Hough transform) is formulated as a family of line integrals through a two-dimensional function. ... The Radon transform provides us with a simple means of computing the FF plane of the autochirplet transform, by using the Wigner distribution, and arriving at a transform space that tells us basically the same information as the chirplet FF-plane, except that we benefit from the greater resolution of the Wigner distribution. ...

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• The new precision concept
• The Frequency-Frequency (FF) Plane
• CHIRPLET TRANSFORM SUBSPACES

... 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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• Population of Galactic globular clusters, tabl

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 ...

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• Getting Started in Actor Prolog. Oil Production.
• Laboratory of Cybernetics. IRE RAS.
• Atmospheric influence on the different radioengineering systems functioning.

... Obviously, the size of the cavern is of the order of the Schwartzman radius. ... Thus, consideration of the inverse effect of pulsar radiation on the properties of accreting plasma makes the ejection possible even when the Schwartzman radius is smaller than the capture radius. ... If the cavern radius , the condition at its boundary can be written as . ... Apart from magnetic dipole radiation, the cavern may also contain relativistic particles (which are also reflected from the cavern boundary). ...

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• Initial Distributions of Binary Parameters
• Parameters of the starburst
• Change of Binary Parameters: Mass, Semi-major Axis and Eccentricity

... T2226 Date Received: 2006­May­25 14:03:26 Technical Page Proposal Type: Urgent General Category: Terrestrial Aeronomy Sub­Category: Radar Observation Category: Thermosphere Total Time Requested: 42 hours Hours Proposal Title: Improved Neutral atomic Oxygen density Estimation Using The Arecibo Dual­ Beam ISR ABSTRACT: Neutral atomic oxygen density is a fundamental state parameter of the thermosphere, but its accurate measurement in the region has long been a di#cult aeronomic problem. ...

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• Arecibo Observatory L-Wide Band Receiver
• CIMA Common Problems
• AGES Database Search

... Публикации и издания Публикации профессорско-преподавательского состава СГАУ Издания проф. Сосниной Т.Н. Biosphere: Analysis of Value Parameters . ... Besides, the ways of saving the use value and value properties of biosphere are analyzed. The expediency of transformation of two-criterion theory of value into the three- criterion theory of the balance of value, where the ecologic component performs the function of the key criterion has been founded. ... BIOSPHERE USE VALUE OF THE PRODUCT: MAIN . ...

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• XII National meeting on management problems
• Timbay Ivan Aleksandrovich
• Belokonov Igor Vitalevich

... 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. ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm14e.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/suvorkin.pdf

... 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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• Conference "Global Fields"
• Andrei Romashchenko. Selected papers.
• Christophe Pittet. MATHEMATICAL ASPECTS OF QUANTUM COMPUTATIONS (Spring 2011)