... Among the objectives of Principal Components Analysis are the following. dimensionality reduction; љ . the determining of linear combinations of variables; љ . ... identification of groups of objects or of outliers. ... Finding a set of principal axes allows the objects to be adequately characterised on a smaller number of (artificial) variables. ... Reduction of dimensionality is practicable if the first new axes account for approximately 75 % or more of the variance. ...

. Next: CAL_offsetCorrect Up: CAL_rgsGetDarkFrame Previous: Used CAL State Variables Contents . DarkFrame . ClockPatterns for the mapping between CSG_ID and CSG_Name ( CSG_Name is used for the identifications of the CSG program parameters in CCF DarkFrame .) . Michael Smith 2011-09-20

... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...

... Created: 23 February 2001 . ... SOFTWARE MAINTENANCE MANUAL . ... 9 January 2001 . ... Note: in the final document, the table of contents will be to third level] . The Software Maintenance Manual describes the procedures for installation and maintenance of the software for the Gemini Near-infrared Integral Field Spectrograph (NIFS). ... Section 19.4.3 of the document “Programmatic Requirements for Gemini Instrumentation Development” states the requirements for the Software Maintenance Manual . ...

... Inside IDL, STARTABLE is in the table format. ... STAR (string) Identifier of form CCCNNNNNN/CCCNNNN . ... RA (double) Right Ascension [h] . ... BAT (short int) Number in Batten's Catalogue . ... BSC (short int) Number in Bright Star Catalogue . ... ADS (short int) Number in Aitken Double Star Catalogue . ... WDS (long int) Number in Washington Double star catalog . MV (float) Johnson V magnitude (for combined system if multiple) . ... TYPE1 (float) Floating point spectral type of component 1 . ...

Next: Code of Good Practice Up: scientific Previous: scientific . The Armagh Observatory recognizes that honesty is an essential component of scholarly activity. All researchers have a duty to society, to their profession, to their employer, and to those funding their research, to conduct their research in the most conscientious and responsible manner possible. ... Next: Code of Good Practice Up: scientific Previous: scientific webmaster@star.arm.ac.uk ...

... Bojan Nikolic web pages (r. 329) . ... SCons user manual http://www.scons.org/doc/1.2.0/HTML/scons-user/book1.html . SCons man page (on web at http://www.scons.org/doc/HTML/scons-man.html , or man scons ) . ... SCons is a tool to build compile source code into (closer-to) executable format. ... Curiously, the shared-library SCons builder will accept multiple identical sources and pass them all to the linker, which will normally lead to ?multiple definition? errors. ... Introduction to SCons . ...

Data in GIPSY is stored in so called sets . A set consists of two components: an image component and a descriptor component. These components are stored in separate files, but in GIPSY they are always used together. The image data is stored in a `crystalline' structure with a virtually unlimited (up to 20) number of dimensions. ... Within a set subsets can be defined. ... The figure below shows the possible subset types in a three-dimensional set, a `` cube '': . ...

... Accurate identification of physical binary star systems has become of increasing interest in recent years. ... Identification of physical binary star systems, with an estimated reliability of such identifications based on the theory of probability, is also important for current and future efforts to find binary star systems that are candidates for observations with the aim of determining their orbits and component masses. ... probability of the proximity of proper motions and ; . ...

... Abstract Unpack an array summary into its double precision and integer components. Required_Reading DAF . ... This identifies the contents and location of a single array within a DAF. nd is the number of double precision components in the summary. ni is the number of integer components in the summary. ... Two routines, DAFPS (pack summary) and dafus_c (unpack summary) are provided for packing and unpacking summaries. ... 1) If nd is zero or negative, no double precision components are returned. ...

Next: Observational Zoo of Binaries Up: No Title Previous: Contents . In the early 1980s, our understanding of binary star evolution љ based on the pioneer work by Paczynski (1971)[ 150 ], Tutukov and Yungelson (1973)[ 195 ], van den Heuvel and Heise (1972)[ 201 ], allowed us to construct a general evolutionary scenario љ which successfully explained the genesis of well-studied normal stars and offered potential explanation for new X-ray sources discovered in space experiments. ...

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Hide Zen home . ... Tsearch2 . ... There is a big dynamical storage of documents in external database, which needs to be indexed and searched. ... The requirement to the system is to serve about 100,000 search requests per day with ability to use sophisticated ranking, based on different thingies. ... We tested direct full text searches in database as well as indirect searches using search daemon. ... You need web user in your system and in database for search daemon: . usr/sbin/groupadd web . ...

Next: stecf.cplucy - Enhanced Two-channel Up: The ``stecf" IRAF Layered Previous: The ``stecf" IRAF Layered . For many years the ST-ECF has developed IRAF tasks and packages for HST and related data analysis. ... To allow wider and more efficient distribution and to bring all components to a uniform level of quality and documentation we have decided to combine these components into a standard-format IRAF package to be called ``stecf''. ...

CIMA is more than just the observing tool - in fact, the observing tool is just a part of a bigger package called the CIMA software package. ... There is also a another package called the CIMA WAPP software which contains the WAPP software, the special Tcl/Tk interpreter used by CIMA and support libraries. ... All CIMA software components recognize the following general options that are part of the CIMA version selection system: . ... The select_cima script can be used to set up a default version. ...

Peremennye Zvezdy ( Variable Stars ) 33 , No. ... I present the discovery of an eclipsing component in light variations of the known High-Amplitude Delta Scuti star GSC 1374-01131 based on the Catalina Surveys publicly available data. ... From a single night of their observations, the variable was classified as a HADS (High-Amplitude Delta Scuti) star, with the light elements: . ... The light curves of GSC 1374-01131 based on Catalina data, folded with periods of pulsations and eclipses. ...

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

... OEM COMPONENTS . ... OEM OPTICAL COMPONENTS . ... Objective, Plan Achromatic, 4 X 0.12, BF . ... Objective, Flatfield Achromatic, 20 X 0.40, BF . ... Objective, Flatfield Achromatic, 60 X 1.00-0.70, Oil, Iris, BF . ... Objective, Flatfield Achromatic, 100 X 1.25, Oil, BF . ... Q-Plan™ Achromat Objective, 2.5 X 0.08, BF . ... Q-Plan™ Achromat Objective, 50 X 1.0-0.70, oil, iris, BF/DF . ... Q-Plan™ Achromat Objective, 100 X 1.25, oil, BF . ... Q-Plan™ Achromat Objective, 100 X 1.30, oil, iris, BF/DF ...

... A component of the hierarchical structure defined by the document type definition; it is identified in a document instance by descriptive markup, usually a start-tag and an end-tag. ... HTTP . ... For more information see: http://www.w3.org/hypertext/WWW/Protocols/Overview.html . ... Available by anonymous FTP as Postscript ( www.w3.org/pub/www/doc/url.ps ) or text ( www.w3.org/pub/www/doc/url.txt ) . ... For bootstrap information, telnet www.w3.org or find documents at ftp://www.w3.org/pub/www/doc ...

... In this first example, we allow an object to fall onto a small radar unit . The resulting Time-Frequency distribution is shown as a contour plot in Fig. 8 (a). Figure: FIGURE GOES SOMEWHERE IN THIS GENERAL VICINITY . ... Its density plot appears as an image in Fig. ... The response has a very high peak, as evidenced from Fig. ...