The process of determining the number and characteristics of sources in astronomical images is so fundamental to a large range of astronomical problems that it is perhaps surprising that no standard procedure has ever been defined that has well understood properties with a high degree of statistical rigour on completeness and reliability. ... In this analysis we present results from testing such algorithms as implemented in the SExtractor, Selavy (Duchamp), and sfind tools on simulated data. ...

... Posts tagged ?incompleteness? ... Comment . ... The notions of missing data are overall different between two communities. ... Astronomers?I?m not sure how they think but my impression so far is that a missing value in one attribute/variable from a object/observation/informant, all other attributes related to that object become useless because that object is not considered in scientific data analysis or model evaluation process. ... 2 Comments . ... Entries RSS . ... Entries (RSS) and Comments (RSS)...

DIGITAL WDC EXCHANGE FORMAT . FOR OBSERVATORY 1.0 MINUTE VALUES 1. ... DATA-1 .. DATA-60 are 1-minute values of the given element for that hour. ... Typically, digital 1-minute values received by WDCs from organizations operating automatic magnetic observatory instruments are averages of more frequendy sampled values, e.g. 10-second point samples. ... If the method used to obtain 1-minute average values is important to a user, the WDC will assist in determining the exact procedure applied. ...

... Space Research Institute . ... Main research and development work completed in 2009 and ready for implementation . ... Development of the Northern Eurasia land cover map based on medium spatial resolution satellite data. ... The research and development has been completed of the first in Russia and in the whole world high-speed digital streams decoder for space and satellite channels with extremely high noise levels. ... Main research and development work completed in 2008 and ready for...

... Complete content for online Mercury is available to ASP members and institutional subscribers . ... The University of Arizona's Astronomy Camps promote an authentic understanding of science, research, and engineering among young students and adults by providing unique, hands-on, immersion adventures in scientific exploration via astronomy and related subjects at high-altitude observatories. ... Kepler: A Harbinger for Astrobiology , Trevor Quirk . ... Editorial, Paul Deans . ...

New images are being released to celebrate the International Year of Light 2015. ... M51: X-ray: NASA/CXC/SAO; UV: NASA/JPL-Caltech; Optical: NASA/STScI; IR: NASA/JPL-Caltech; SNR0519-69.0: X-ray: NASA/CXC/Rutgers/J.Hughes; Optical: NASA/STScI; MSH 11-62: X-ray: NASA/CXC/SAO/P.Slane et al; Optical: DSS; Radio: CSIRO/ATNF/ATCA; Cygnus A: X-ray: NASA/CXC/SAO; Optical: NASA/STScI; Radio: NSF/NRAO/AUI/VLA; RCW 86: X-ray: NASA/CXC/MIT/D.Castro et al, Optical: NOAO/AURA/NSF/CTIO ...

... After delivery of all engineering models and SRT test sets to LA main ASC activities were moved to LA as well. ... Special attention was paid to the problem of tests on the electromagnetic compatibility between service and scientific on-board payload. ... The SRT was attached to special supporting frame, and LNA cooling system (NSOTR) was installed on the Focal Container. ... FC Focal Container - hermetic package with the scientific payload; it contains receivers, . ... TVT Thermo-Vacuum Tests . ...

... An examination of Figure 5 shows that the FSRQs in the DXRBS sample cover a much wider range of parameter space than those in the two previously existing complete samples of FSRQs , the 1 Jy and S4 samples ( radio data for these samples were taken from Stickel et al. 1994 and Stickel K?hr 1994, while X-ray data for these ... Also, the mean of the DXRBS sample's X-ray luminosity differs from that of both the 1 Jy and S4 samples' only at the 93 and level respectively. ...

Next: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... ESA Villafranca . ... The International Ultraviolet Explorer (IUE) mission has produced a large collection of spectroscopic data containing about 104,000 spectra of ca. 9,600 different objects. ... This contribution describes the IUEFA project at Villafranca, and the plans to make the archive available to the scientific community under through the INES (IUE New Extracted Spectra) project. ... Data set . ... 2D spectra . ...

... We now also have the possibility to write our own generic functions or subroutines. ... PROGRAM SWAP _MAIN IMPLICIT NONE INTEGER :: I, J, K, L REAL :: A, B, X, Y CHARACTER :: C, D, E, F INTERFACE SWAP SUBROUTINE SWAP _R(A, B) REAL, INTENT ( INOUT ) :: A, B END SUBROUTINE SWAP _R SUBROUTINE SWAP _I(A, B) INTEGER, INTENT ( INOUT ) :: A, B END SUBROUTINE SWAP _I SUBROUTINE SWAP _C(A, B) CHARACTER, INTENT ( INOUT ) :: A, B END SUBROUTINE SWAP _C ...

The sections <Directory> , <Location> and <Files> can contain directives which only apply to specified directories, URLs or files respectively. Also htaccess files can be used inside a directory to apply directives to that directory. ... The order of merging is: . ... If multiple <Directory> sections apply to the same directory they are processed in the configuration file order. ... Using the options in question is only possible inside a <Directory> section (or a .htaccess file). ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

Frob enius endomorphisms of linear spaces Alexander E. Guterman My research interests are in ring theory, linear algebra and combinatorics. In particular, I investigate transformations on matrices over different algebraic structures, preserving some matrix properties, sets or invariants. ... I was investigating monotone matrix transformations and developed method of matrix deformations and chain method in order to classify monotone linear and additive transformations on matrices. ...

Filename completion is only available if the the environment variables EDITOR and/or VISUAL are set to either emacs , gmacs or vi . For example: EDITOR=emacs . ... To complete a file or directory name with emacs or gmacs set press the ESC key twice. ls -l on<ESC><ESC> line_help . If the filename is not completed enter more characters until the filename can be uniquely identified. ... To complete a file or directory name with vi set press the \ (backward slash) key. ls -l on\ line_help . ...

Next: Silicate minerals Up: A Database of Optical Previous: Database of Optical Properties . ... If necessary, data have been determined for the different crystallographic axes. ... In the following we give some examples of the data and their possible applications. Table: Summary of data measured in the Jena laboratory, which are currently available from the JPDOC. compound . ... amorph. ... Next: Silicate minerals Up: A Database of Optical Previous: Database of Optical Properties root 2003-03-06 ...

... 8, ``Celestial Mechanics'', 2002 Celestial Mechanics in Internet --- Russian web­site V. S. Ural'skaya, N. V. Emelianov Sternberg Astronomical Institute, Moscow, Russia Our main goal is to create a professional site in Internet, containing ephemeris service, database of observations, bibliographic references and information on natural satellites of planets. ... Up to now, the drawing up and the presentation in Internet of the information on natural satellites of planets in Russian are completed. ...

... ClassљList . ... ClassљMembers . SphericalRegion Member List . ... contains (const SphericalRegion *r) const . ... contains (const SphericalRegionP r) const (defined in SphericalRegion ) . ... contains (const Vec3d &p) const (defined in SphericalRegion ) . ... contains (const SphericalPolygon &r) const (defined in SphericalRegion ) . ... contains (const SphericalConvexPolygon &r) const (defined in SphericalRegion ) . ... contains (const SphericalCap &r) const (defined in SphericalRegion ) . ...

... LWN.net Weekly Edition for March 18, 2004 . ... LWN.net FAQ . ... This article is part of the LWN Porting Drivers to 2.6 series . Completions are a simple synchronization mechanism that is preferable to sleeping and waking up in some situations. ... When your driver begins some process whose completion must be waited for, it's simply a matter of passing your completion event to wait_for_completion() : . ... void complete(struct completion *comp); void complete_all(struct completion *comp); . ...

... A Late Leonid from a Sparse Shower . ... As expected and unlike the last few years, the Earth just did not pass through any dense particle streams left over by the Sun-orbiting Comet Tempel-Tuttle. ... What's lighting up the Cigar Galaxy? ... Canis Major Dwarf: A New Closest Galaxy . ... Leonids from Leo . ... Is Leo leaking? Leo, the famous sky constellation visible on the left of the above all-sky photograph, appears to be the source of all the meteors seen in 1998's Leonids Meteor Shower. ...

In this chapter we will consider two very simple but useful Web agents that I have written on Actor Prolog for my own needs. ... Let us start the Web agent. Fig. ... Start of the Web agent. The Context diagram consists of three blocks: "Logic Programming Sites", "Edit", and "Check". ... Some Web sites that are linked with the logic programming and Prolog are listed in the pulldown list (these addresses are transferred to the "Edit" block from the "Logic Programming Sites" block). ...