Next: Sending Signals - kill() Up: Process Control and Management Previous: pipe() - Low level Piping . ... When a process terminates abnormally it usually tries to send a signal indicating what went wrong. ... The process uses signals which can be numbered 0 to 31. Macros are defined in signal.h header file for common signals. ... Sending Signals - kill() . Receiving signals - signal() . ... Wed Sep 14 10:06:31 BST 1994 ...

vmeselectrcv - create a subset of an AO datafile containing 1 receiver (or all but 1 receiver). outputfile . ... To process a particular receiver in a datafile it is better to add an option to the program to just process that receiver rather than duplicate the data. binary: /pkg/aosoft/fedora4/"arch"/bin/vmeselectrcv Source: /share/megs/phil/svn/aosoft/src/gen/vmeselectrcv.c vmeselectrcv is compiled to run on linux. return to: filter_programs return to: home_~phil ...

The NTP standard specifies an extension which provides cryptographic authentication of received NTP packets. ... The specification allows any one of possibly 4 billion keys, numbered with 32-bit key identifiers, to be used to authenticate an association. ... In the case of MD5, the keys are 64 bits (8 bytes). xntpd reads its keys from a file specified using the -k command line option or the keys statement in the configuration file. ... A zero key in NTP format would be specified as 8080808080808080 . ...

Tasks in GIPSY are the application programs which do useful work for the user. ... To start a task without parameters, only the name of the task needs to be supplied. taskname To specify parameters, any number of keyword-value pairs separated by blanks can be added to the taskname: taskname keyword1 = value1 keyword2 = value2 .. ... The user can set a parameter in the task context to change requests for hidden keywords into requests for defaulted keywords. ... Tasks all run in a context . ...

Use the XPA programs to send/receive data to/from XPA servers from the command line or from scripts. <data> | xpaset [-h] [-i nsinet] [-m method] [-n] [-p] [-s] [-t sval,lval] [-u users] [-v] <template> [paramlist] xpaget [-h] [-i nsinet] [-m method] [-s] [-t sval,lval] [-u users] <template> [paramlist] xpainfo [-h] [-i nsinet] [-m method] [-n] [-s] [-t sval,lval] [-u users] <template> [paramlist] xpaaccess [-c] [-h] [-i nsinet] [-m method] [-n] [-u users] [-v|-V] <template> [type] <data> | ...

In Actor Prolog a resident is a special mechanism that helps processes to inspect state of other processes. A resident observes the state of a specified (target) process and if the state of the process changes (for instance, after message handling) it proves a specified predicate of the process. ... Work of the resident. ... Any change of the list of target processes or arguments of resident function results in activation of the resident and repeated collection of information in the target worlds. ...

To proceed to drawing tracks of some objects select Tracks item in menu bar and then select Input Data in drop-down menu. Enter initial and final dates of time interval in corresponding data fields of the Input Data dialog box Input Data . ... The frame with horizontal and vertical scales corresponding to the right ascension and declination axes appears on screen. ... Depending on specifications introduced in the Input Data dialog box the picture represents tracks up to three different objects. ...

... Directives | ... Apache HTTP Server Version 2.2 . ... The most important directives used to control this MPM are ThreadsPerChild , which controls the number of threads deployed by each child process and MaxClients , which controls the maximum total number of threads that may be launched. ... Two directives set hard limits on the number of active child processes and the number of server threads in a child process, and can only be changed by fully stopping the server and then starting it again. ...

... Directives | ... Apache HTTP Server Version 2.2 . ... The most important directives used to control this MPM are ThreadsPerChild , which controls the number of threads deployed by each child process and MaxClients , which controls the maximum total number of threads that may be launched. ... Two directives set hard limits on the number of active child processes and the number of server threads in a child process, and can only be changed by fully stopping the server and then starting it again. ...

... 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. ...

To write a successful HST proposal it is useful to have some insight into the process by which proposals are reviewed and selected. ... How the New Cycle 9 Review Process Worked , December 1999, pp. 21-22. by Meg Urry [ cmu@stsci.edu ], Head of the STScI Science Program Selection Office. ... Evolu tion of the HST Proposal Selection Process: Changes for Cycle 9 , Meg Urry, June 1999, pp. ... There were five key changes in the proposal review process for Cycle 9. ... Cycle 10 Announcement Page . ...

When you enter a command it invokes a program. While this program is running it is called a process . It is important to grasp that although there is only one copy of a program held in the file system , any number of processes can be invoked which run this program. When the operating system is started after a boot , a single process is started. ... Any processes that are started from within your shell - such as entering a command - are the children of this process. ...

... If the number of octets is greater than the number of characters sent, the modems probably used MNP5 compression on an already compressed file, and the result was expanded data. ... Disconnect Reason: Possible reasons the modem hung up are as follows: A Rootless Tree: The modem received an invalid V.42 bis (compression) frame. ... Extra Stepup: The modem received an invalid V.42 bis (compression) frame. ... Invalid Codeword: The modem received an invalid V.42 bis (compression) frame. ...

... The defaults for each variable are: MinSpareServers 5 MaxSpareServers 10 StartServers 5 There is an absolute maximum number of simultaneous children defined by a compile-time limit which defaults to 256 and a "MaxClients" directive which specifies the number of simultaneous children that will be allowed. ... If you need more than 256 simultaneous children, you need to modify both HARD_SERVER_LIMIT and MaxClients. In versions before 1.2, HARD_SERVER_LIMIT defaulted to 150. ...

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

... The task also issues a number of housekeeping related messages and values and also writes several keywords to the EXPOSURE extension (the information is usually CCD-dependent and it is thus important that it is kept and propagated through the event file processing chain). ... Filter: the filter wheel position is derived from the position sensor potentiometer (housekeeping column F1122 contained in the main periodic housekeeping file PNPMH1 , HK mnemonic H_CE_FWSPOT). ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Site . ... Commanding . ... In a typical robotic observing scenario, each afternoon, a telescope control computer obtains a set of objects to observe from its home institution from a command or script file. ... The file is then transferred to the telescope control computer at the Winer Observatory in Sonoita. ... The Iowa control computer then begins processing the telrun.sls file. ... 2013 Winer Observatory. ...

... Class . ... METHOD . ... java.lang.Object ij.plugin.filter.ImageMath . ... This method is called by ImageJ to inform the plugin-filter about the passes to its run method. int . ... This method is called after setup(arg, imp) unless the DONE flag has been set. ... The method should return a combination (bitwise OR) of the flags specified in interfaces PlugInFilter and ExtendedPlugInFilter . ... This method is called by ImageJ to inform the plugin-filter about the passes to its run method. ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... This year SSAU provides 1429 state-funded places for admission in all kinds and directions of educational programs. ... In addition, SSAU Admission Committee notes the substantial increase in interest from the foreign applicants this year. The number of applications from foreign countries has already surpassed last year's totals - 76 applications. Based on the experience of admission campaigns of previous years, SSAU expects summer 2014 to enrol about 150 foreign students in the university. ...