... First of all, I should say that you cannot guarantee user-mode processes to have exact control of timing because of the multi-tasking nature of Linux. ... However, for most applications using I/O ports, this does not really matter. To minimise this, you may want to nice your process to a high-priority value (see the nice(2) manual page) or use real-time scheduling (see below). ... Linux 2.x kernels have soft real time support; see the manual page for sched_setscheduler(2) for details. ...

... Data was taken with lbw and the mock spectrometers on 05may09 to investigate the problem with higher time resolution and bandwidth. ... 6 172 Mhz bands were taken centered at: 1200,1300,1400,1500,1600, and 1700 Mhz. 8192 channels (20Khz resolution) was used for the low time resolution (.1 second dumps). 4096 channels (40Khz resolution) was used for the high time resolution (.001 second dumps). ... The total power was computed for each 172 Mhz band and then plotted vs time (.1 second resolution). ...

Next: Dynamic Scheduling Up: Scan Times Previous: Dealing with Formatter Reconfigurations Contents . The nominal scan start time, if set using DWELL , is the time good data is expected to be available. ... The more modern systems, especially the Mark5C recorders and the software correlators, approach this ideal and the recordings are started at the time specified in the VEX file for the start of good data. ... A recording scan is the time between stops of the recording media. ...

System Throughput and SNR / Exposure Time Estimation . ... Figure 6.11 shows the photometric monitoring data for the standard star GRW+70D5824 (a white dwarf classified DA3; B-V = -0.09) in the WF3 and PC1 for the set of filters which are routinely monitored. ... Figure 6.12 shows the throughput decline in all four chips as a function of days since the last decontamination for the F170W filter. ... Figure 6.12: - Throughput for the F170W Filter Following Decontaminations. ... Time. ...

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

... SMIS : Space Monitoring Information Support laboratory . Russia's Weather : State Meteorological Center Weather Forecast . Space Weather service : ACE real time solar wind data and simple geomagnetic activity forecast. ... World Fire Web : Space Research Institute (IKI) node . Sputnik : Joint project of SRC Planeta, Rosgidromet and Space Research Institute (IKI) . ... Today's Space Weather : Presented by the Space Environment Center . ... Back to the Space Research Institute Home Page ...

XMM-Newton Timing Monitoring Antonio Martin Carrillo Tutor: Marcus Kirsch July 24, 2006 Antonio Martin Carrillo 1 Overview XMM-Newton Pulsars Crab pulsar Relative time accuracy 2 epoch folding Conclusions Next steps Antonio Martin Carrillo 2 XMM-Newton · Launched in December 1999 · 3 independent CCD cameras called EPIC (European Photon Imaging Camera) · 2MOS and 1PN ...

WPLTN Technical Workshop . ... WPLTN-2012) . ... of the International Scientific Technical Conference WPLTN-2012 . ... Having an opinion that the collocation of various space geodesy measurement technologies has a fundamental role in increasing the accuracy of fundamental and applied positioning, navigation and timing provision, the International Scientific Technical Conference WPLTN-2012 has come to the following conclusions: 2.1. ... Web-page . ... Resolution of the conference WPLTN-2012 . ...

Astronomy Picture of the Day . ... 27.09.1998 . ... Einstein 's many visionary scientific contributions include the equivalence of mass and energy (E=mc^2), how the maximum speed limit of light affects measurements of time and space ( special relativity ), and a more accurate theory of gravity based on simple geometric concepts ( general relativity ). ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: time - space . Publications with words: time - space . ...

VRAM-based Windows and CAD Accelerator . ... 5 Year Warranty Diamond's Stealth 64 VRAM is the latest addition to the award winning Stealth family of graphics accelerators for compute-intensive Windows and DOS applications. Designed for PC/ and VESA local bus architectures,. the VRAM based Stealth 64 sets a new standard in 64-bit graphics performance. With 4MB of VRAM, the Stealth 64 displays 24-bit true color up to 1152x864 resolution and provides 65,536 colors at 1280x1024 resolution. ...

... The MROI makes use of optical interferometry, much like COAST . ... As a major collaborator, the Cambridge Astrophysics Group is currently developing some of the mechanisms below, specifically the delay line and the fast tip-tilt system. ... Fringe tracking is used to control the positions of the delay line trolleys to make sure the light beams from the different telescopes in the MROI arrive at the science camera beam combiners in phase so that an interference pattern can be produced. ...

... for Cosmic Ray Observation is situated in Irkutsk (Russia). ... Real-time (preliminary) cosmic ray data in Irkutsk . ... Online Cosmic Ray and Atmospheric Pressure Data Base . ... Real-time data Uncorrected for pressure (Resolution 1 hour - 1 year) -- since 05.2001 . Real-time data Corrected for pressure (Resolution 1 min - 1 year) --- since 09.2001 . Resolution 1 hour - 1 year) --- since 06.2001 . Final data Corrected for pressure (Resolution 1 hour - 1 year) --- From 01.1975 To 07.2004 . ...

... Science . ... Science Users Information > Observing with ESO Telescopes > Policies and Procedures > Director's Discretionary Time . ... Phase 1 Proposals . ... Up to 5% of the available general observing time may be used for Director's Discretionary Time Proposals (DDTs). ... proposals of a somewhat risky nature requesting a small amount of observing time to test the feasibility of a programme. ... Normally DDT proposals will be reviewed by the Director's Discretionary Time Committee (DDTC). ...

The summary plot shows the monthly time distribution of all predicted magnetic conjugations between four spacecraft considered. ... To show the time of conjugation, in frame of the corresponding day for each SC the corresponding colour and line are used: . for the first SC the red color and the first line are used, . ... On the plot the SC names are shown by the corresponding colours. The summary plot permit to find the simultaneous magnetic conjugations of 3 and even 4 satellites. ...

... xs qpspec source qpoe file (xdata$rp110590n00.qp): xdata$rp110590n00.qp[ time =(1606720.00:1607479.00)] source region descriptor ():c 6947 9325 2' background qpoe file ( ): bkgd region descriptor (): a 6947 9325 3' 4' root name for output files [root_obs.tab, etc.] (): arlac_1 ds: 0 file : arlac_1_obs.tab scale: 0.00 mission: 20 seqno: CA110590P.N6 instrument: ROSAT_PSPC sub-instrument: 1 no. pha channels: 34 mean off-axis angle of events (arcmin ...

ENERGOSPECTROMETER OF IONOSPHERIC PLASMA P3-3 . ... The major objective of the P3-3 experiment is complex investigation the main parameters of ionospheric plasma with high time and spatial resolution. ... Measured parameters: . ... The experiment produce regular data - measured with fixed time interval and «packet» data - measured once per specific time interval and producing blocks of TM-information. ... If all parameters will be measured once per second, the experiment will produce 10 MB per orbit. ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... rotatelogs is a simple program for use in conjunction with Apache's piped logfile feature. It supports rotation based on a time interval or maximum size of the log. ... For example, if the rotation time is 3600, the log file will be rotated at the beginning of every hour; if the rotation time is 86400, the log file will be rotated every night at midnight. ... date and time (localized) . ...

Next: Scope of applications Up: Time Series Analysis Previous: Sampling patterns . In this section we describe the functioning of the MIDAS time series analysis (TSA) package. ... We precede the command description with the description of the scope of the applications and the structure of the TSA input and output files and of the keywords holding the relevant parameters. Scope of applications . ... Input data format . ... Time series analysis in the frequency domain . ... Auxiliary utilities . ...

LIGO-G020254-00-Z ________________________ Three Veto Schemes R. Schofield and R. Rahkola (Oregon) 1) Measured Coupling 2) Outlier Rejection 3) Excess Coincidence ________________________ ________________________ absGlitch · Monitor by R. Rahkola - glitchMon skeleton · High- or band-pass filtering · Glitch begins when count threshold is exceeded · Glitch ends when no samples exceed threshold for selectable delay time · ... 3) Histogram run of absGlitch. ... 5) "Veto" run of absGlitch. ...