Describes how spatial region boundaries are handled. The golden rule for spatial region filtering was first enunciated by Leon VanSpeybroeck in 1986: . ... With this in mind, the rules for determining whether a boundary image pixel or table row are assigned to a region are defined below. For image filtering, pixels whose center is inside the boundary are included. ... That is, an row is inside the boundary without regard to its integerized pixel value. ...

... The task is designed to make a mask image (ie an image of boolean values) by applying a selection expression to the pixel values of an input image. ... Hence for example if one wished to mark as TRUE all pixels of the input which exceeded 7.3 in value, one would call immask with expression =`VAL 7.3'. ... All attributes (keywords), including WCS keywords, but excluding keywords related to any data subspace (DSS) in the input image, are copied to the output image. ...

... I am developing an Informed Prefetching and Caching system as part of the kernel in which it is very important that the memory assigned to hold the data does not get swapped to disk. Without any thought to swapping I used vmalloc() to assign memory to the data structures of the Informed prefetching system. ... I later realized that most probably the pages assigned using vmalloc() were getting swapped to the disk and when I referenced them, they were brought from the disk rather than memory. ...

nearneighbor - A Nearest neighbor gridding algorithm nearneighbor [ xyzfile ( s ) ] -G out _ grdfile -I x _ inc [ m|c ][/ y _ inc [ m|c ]] -N sectors -R west / east / south / north [ r ] -S search _ radius [ m|c|k|K ] [ -E empty ] [ -F ] [ -H [ nrec ] ] [ -L flag ] [ -V ] [ -W ] [ -: ] [ -bi [ s ][ n ] ] nearneighbor reads arbitrarily located (x,y,z[,w]) triples [quadruplets] from standard ... Default is quadrant search, i.e., sectors = 4]. ... H Input file(s) has Header record(s). ...

... The schedule assigned id (example: AS05) for your observing program. ... Use the time you started using the telescope including when you started taking calibrations. The time you opened for on sky observations can be entered later in the activity log. UTC End Time: . ... Focus Log: . ... The focus position can be obtained under the Telescope column of the System Status in ACP or from the run log. ... When all fields are filled out press this button to email the log to the ARCSAT and community. ...

The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents. Franklin studied static electricity, produced by rubbing glass, amber, sulfur etc. with fur or dry cloth. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-). ... Exploration" home page (index) Glossary . Official GSFC Home Page .. ...

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...

... Classes . ... gTime Class Reference . This class implements time calculations. ... gTime (double ai_jDays=0) . ... gTime (const gTime &timeSrc) . ... Set the time value of the time object to the julian day of year, day. ... operator= (const gTime &timeSrc) . ... Returns the time GMT value in Julian days. ... Returns the time_t value of the gTime Object. ... Returns a gTime object setted with the actual machine time. ... gTime Object assigned with real machine time. double gTime::getGmtTm . ...

... 0 Data Bit for Transfer Relay Control 0 : DDS's to Receiver, Fixed 20MHz to Transmitter 1 : DDS's to Transmitter, Fixed 20MHz to Receiver ___________________________ (+) Use Bit 12 in conjuction with the Data Ready Flag and Data Error Flag. ... Table 2 : Command Word Bit Assignments Bits Description 15 Set to 0 to identify Command Word 14,13,12 0 : Exit IPP Mode and Clear Flags 1 : Clear DDS's 2 : Update Immediate 3 : Update on tick 4 : Update on tick and then on every IPP 5.. ...

... Chapter 4: Solar System Targets > 4.2 Target Identification . ... The following information is required to identify and classify each target. ... For example, separate targets should be defined if you plan to take spectra of several different surface features on a planet, or if you plan to observe the same feature with different timing constraints. ... Description . PLANET . If the target is the center of a planet, enter PLANET followed by its name (e.g., PLANET JUPITER , PLANET SATURN ). ...