... The DAL supports Null Values (both integer and real). For objects (i.e. arrays or columns) containing integer data, it is possible to define a null value. A data value is then is considered null if it is equal to the object's null value. Integer data containing null values may be operated on safely i.e. arithmetic operations. ... Real data containing null values must be treated carefully i.e. testing for nullity before carrying out any further operations. ...

... Archives . ... Discontinuation of weekly [arXiv] series . ... For a discipline that relies so heavily on images, it is rather surprising how little use astronomy makes of the vast body of work on image analysis carried out by mathematicians and computer scientists. ... images. ... Images may be Opened and Closed with different structure elements. ... Tags: close , dilate , EotW , Equation , Equation of the Week , erode , Morphological operator , open , set theory . Category: Imaging , Jargon | ...

FOC Instrument Handbook Version 7.0 97 9.0 FOC WWW PAGES The FOC team has developed a set of WWW pages to allow greater access to a variety of information regarding the operations, calibrations, and documentation of the FOC. ... This should be the first stop for any observer with FOC data in order to see how the data they have, or plan to acquire, might be affected. ... Descriptions of calibration files and tables used during the standard `pipeline' calibration of all HST data can be found here. ...

... One of these factors is how the client application uses VDPAU; i.e. the number of surfaces allocated for buffering, order of operations, etc. ... At a bare minimum, the application must allocate one video surface for each reference frame that the stream can use (2 for MPEG or VC-1, a variable stream-dependent number for H.264) plus one surface for the picture currently being decoded. However, if this minimum number of surfaces is used, performance may be poor. ... Performance Levels . ...

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

... N.A.Bobylev, Yu.M.Burman, Morse lemmas for functionals of the variational calculus, Func.Anal.Appl., ... N.A.Bobylev, Yu.M.Burman. ... N.A.Bobylev, Yu.M.Burman, A.B.Shubin, Algorithms for control with a minimal number of switchings, Automation and remote control , V.53, 5:619, 1992. ... TeX file ) . ... Quadratic Poisson brackets compatible with an algebra structure . ... Yu.M.Burman. ... Yu.M.Burman, Whitney's index formula in higher dimensions and Laplace integrals , Preprint math.DG/9801044 . ...

Next: Allocating swap space Up: Memory Management Previous: Using a swap space . Virtual memory is built into many operating systems. Since they each need it only when they are running, i.e., never at the same time, the swap spaces of all but the currently running one are being wasted. It would be more efficient for them to share a single swap space. ... The Tips-HOWTO contains some advice on how to implement this. ... Sun May 4 14:08:43 EEST 1997 ...

Russian Version [ MS-Win ] . ... Satellite data ] . ... The program is a powerful tool for multi-purpose image analysis and processing. It operates on files in main standard image storage formats: TIFF, BMP, GIF, PDF. The program contains a rich collection of operations for visual image quality improvement: linear and logarithmic normalization, equalization, brightness transformation by arbitrary look-up table, etc. ... ALMAZ-1 satellite data processing . NOAA satellites data processing . ...

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). ...