... Using UNIX System Calls and Library Functions . ... To use system calls and library functions in a C program we simply call the appropriate C function. Examples of standard library functions we have met include the higher level I/O functions -- fprintf() , malloc() .. ... For most system calls and library functions we have to include an appropriate header file. e.g. stdio.h, math.h . ... Information on nearly all system calls and library functions is available in manual pages. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

A brief introduction to the XPA messaging system, which provides seamless communication between all kinds of Unix event-driven programs, including X programs, Tcl/Tk programs, and Perl programs. ... A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). ... An XPA name server program, xpans, through which XPA access point names are registered by servers and distributed to clients. ...

... The pinhole simulation program is a computationally and memory intensive task. ... A parallel version was developed instead, to enable distributed processing on a cluster of workstations. The program makes use of the Message Passing Interface (MPI) standard for parallel processing, implemented as an API (Application Programming Interface) to the Local Area Multicomputer (LAM) programming environment developed at the Ohio Supercomputer Center. ...

... There are compelling reasons for the pulsar community to utilise a standard data storage format. For example, standardisation of file formats significantly decreases the amount of effort required to integrate new instruments into the analysis chain. ... Accordingly, we have defined PSRFITS as a standard FITS-based format for pulsar data files. ... For example, the first line of Processing History HDU contains information about the data acquisition program and the initial structure of the file. ...

Following are instructions to build and install the programs in this distribution. Make sure that you have all necessary tools for building executables. ... The automatic build process expects a configuration file called Config.local . ... The configuration file specifies the directory in which to install the binaries, as well as control over the generation of debugging code and reference clock support. ... Cleans out object files, programs and temporary files. make distclean . ...

... There are two spell checkers on the VMS clusters: the SPELL command and the TEXSPELL command. SPELL is a general-purpose spelling checker, while TEXSPELL is specifically intended for use with TEX or LATEX source files. ... The SPELL command checks the spelling of all words in a standard text file. ... To make your own word file you would use a standard editor, such as DECTPU, to create a text file with the type . ... After creating the word file, you would type the command as follows: . ...

... a utility program that enables the user to interact with the UNIX operating system. Commands entered by the user are passed by the shell to the operating system which carries them out. ... The user may select which one they wish to use. a character at the start of the command line which indicates that the shell is ready to receive your commands. ... This is assumed to be the keyboard unless input is redirected or piped from a file or another command. the destination for information from a command. ...

Next: Star tables Up: PEPSYS general photometry Previous: What to do . ... Information that is more or less permanent is stored in several MIDAS table files: . ... Observatory table: This table contains the positions of various telescopes, together with essential information such as apertures, and subsidiary information. Horizon table: This table describes the apparent horizon as seen from a particular telescope. ... Star tables . ... Multiple star files . ... General advice about table files . ...

... Version 1.21.1 : - 2002-01-27 (CB) Fixed configuration file (SPR 2723). ... Code also tidied up. ... Version 1.8: 18 September 1998 Used correct syntax for parameter lists in .par file SPR 517: Version 1.7: 14 August 1998 parse call removed SPR 500 closed : removed cal from test/Makefile Version 1.6: 17 June 1998 SPR 441 closed : test harness now checks some values SPR 440 closed : .par file changed SPR 439 closed : file permissions changed Version 1.5: 21 May 1998...

... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...

The Apache HTTP Server provides a mechanism for storing information in named variables that are called environment variables . ... For additional flexibility, the directives provided by mod_setenvif allow environment variables to be set on a per-request basis, conditional on characteristics of particular requests. ... As discussed above, the environment passed to CGI scripts includes standard meta-information about the request in addition to any variables set within the Apache configuration. ...

... The New 1997 IEEE Standards Products Catalog features the complete listing of standards publica-tions and services IEEE Standards offers, along with the information you need to place your order. ... Books and Other Products on Standards - contains a detailed listing of informative print and electronic publications relevant to standards and their implementation in areas of electrical engineering, electronics and computer technology. ... IEEE Standards Products Listing 22 . ... Power Electronics 41 . ...

Digital Equipment Corporation has announced DEC Fortran 90/High Performance Fortran, which is a native Fortran 90/HPF compiler that includes support for parallel execution. ... For parallel execution, a package including DEC Fortran 90 V2.0 together with Digital's PSE is available for Alpha systems running Digital UNIX (OSF/1). For serial execution, DEC Fortran 90 V2.0 is available for Alpha systems running either Digital UNIX (OSF/1) or OpenVMS. ... DEC Fortran 90 V2.0 (for Digital UNIX) . ...

OptInt PmWiki : Pm Wiki / Edit Variables . ... When set to '1', turns on the graphical buttons in the "Edit Page" form. # turn on graphical edit buttons . ... When set to '1', enables the "Save draft" button and built-in handling of "draft" versions of pages, where: . ... The suffix to use for draft versions of pages (default "-Draft"). ... The pattern used to determine if a page should be deleted. ... Name of the page (or an array of names) to be used as the default text for any newly created pages. ...

... TurboLinux?s inetd.conf is relatively sane, however some services like rsh and rlogin are enabled by default, I would advise turning these off. shell stream tcp nowait root /usr/sbin/tcpd in.rshd login stream tcp nowait root /usr/sbin/tcpd in.rlogind talk dgram udp wait nobody.tty /usr/sbin/tcpd in.talkd ntalk dgram udp wait nobody.tty /usr/sbin/tcpd in.ntalkd . ... SSH rpm?s are not available for TurboLinux 3.6 (that is to say I have not found any). ... ProFTPD (a better ftp server then WuFTPD) . ...

Chapter 6. Configuring X for the NVIDIA Driver . ... Using nvidia-xconfig to configure the X server . Manually Editing the Configuration File . ... The NVIDIA Driver includes a utility called nvidia-xconfig, which is designed to make editing the X configuration file easy. ... If you need to reconfigure your X server later, you can run nvidia-xconfig again from a terminal. nvidia-xconfig will make a backup copy of your configuration file before modifying it. ...

home . dfos . ... procedures . ... This page describes how to configure the DFOS login rc files in a standardised way. ... The standardised DFOS login relies on bash, the VLTSW standard PECS and then on .qcrc and .dfosrc files. Installation of PECS provides a .bashrc file, a .profile file and a .pecs directory filled with several further PECS files.. ... HOME}/.pecs/apps-all.env . ... Note though that processAB when called from Condor does source .bashrc, which thus sources your .pecs files. ...

... The XPA messaging system provides seamless communication between many kinds of Unix programs, including X programs and Tcl/Tk programs. It also provides an easy way for users to communicate with XPA-enabled programs by executing XPA client commands in the shell or by utilizing such commands in scripts. ... A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). ...

... Night Sky Network . ... Galileo Educator Network . ... Resources . ... A NASA Galileo Educator Network (GEN) Professional Development Institute (PDI) . ... The Galileo Educator Network (GEN) PDI emphasizes the integration of science content, science practices, and the nature of science as outlined in the national Framework for K 12 Science Education. ... The NASA Galileo Educator Network (GEN) is a NASA funded teacher professional development program managed by the Astronomical Society of the...