... 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 ...

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• Coordinate systems [Oulu]

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... a) Changes in the Solar System - Continued . The Cratered Face of the Moon Impact craters on the Earth, Moon, and other worlds are formed by the bombardment of chunks of rock and ice from space. ... So we conclude that the solar system experienced many more impacts in the distant past than today. ... The Changing Universe - Changes in the Solar System - Changes in Stars - Changes in the Universe | ...

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• ASP: Effecting Global Change

Changes in the WFPC2 observation scheduling system were introduced early in 1999 primarily in order to increase the scheduling efficiency of HST observations starting with Cycle 8. First, the South Atlantic Anomaly (SAA) contours used to limit WFPC2 observations have been modified slightly. ... This change results in a 3% increase in designated SAA-free orbits, which allows better scheduling efficiency, and is expected to impact negatively less than 0.1% of WFPC2 science observations. ...

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• Internal Molecular Contamination During System TV Test
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... This article is part of the LWN Porting Drivers to 2.6 series . One of the more significant changes in the 2.5 development series is the creation of the integrated device model. The device model was originally intended to make power management tasks easier through the maintenance of a representation of the host system's hardware structure. ... Which devices exist in the system, what power state they are in, what bus they are attached to, and which driver is responsible for them. ...

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• LWN: Driver porting: Timekeeping changes
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• LWN: Driver porting: supporting mmap()

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Posted on March 28, 2014 | No Comments Asteroids, chunks of rock and metal orbiting the Sun, were once considered ?vermin of the skies? by astronomers. ... Continue Reading.. ... Posted on February 27, 2014 | ... Posted on January 21, 2014 | ... Posted on December 17, 2013 | ... 3 Comments With only two planets in our solar system without moons (Mercury and Venus) our curiosity is a little spoilt for choice. ...

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• Martina Glass | Astronotes - Part 2
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• Rings Around an Asteroid | Astronotes

... Digital Filterbank Systems . ... Baseband Systems . ... APSR . ... Downconverter control . ... DFB Fold-mode . ... APSR control . ... edit SideBar . ... Input requirements . ... The input signals must be band limited to between m*fn and (m+1)*fn, where fn is the Nyquist frequency for the sampling and m is an integer 0, 1, 2 , 3 .. ... Ideally, the bandpass should be level within +/- 1 db across 90% of the band, but differences of up to 10 db are OK provided data calibration is done carefully. ...

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• PmWiki | PmWiki / Variables
• Pulsar Group Systems/Recent Changes
• Recording Systems Control

... STScI previously used Microsoft Word and Microsoft Access, a Sybase ODBC driver, and the Adobe Acrobat PDF writer, along with a substantial amount of Visual Basic, to generate a variety of documents for the internal Space Telescope Grants Administration System (STGMS). ... To create a document, the internal STGMS application invoked a VB program which launched Microsoft Word and Microsoft Access, Access extracted the required data from a Sybase database using ODBC into an Access table. ...

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• Cost-Effective System Management
• System Interfaces to the STIS Calibration Pipeline
• ADASS Conference Series

To make a temporary change to the value of an environment variable enter the command: setenv VARNAME value_of_variable . ... By convention, the names of environment variables are given in UPPER CASE. To make lasting changes to the value of an environment variable: . ... Use your editor to open the .cshrc ( .tcshrc ) and add the line: setenv VARNAME value_of_variable . ... Enter the command: source .cshrc (.tcshrc) . This adds the new value for the variable to your environment. ...

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• Displaying preset variables
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OptInt PmWiki . ... Edit Page | ... MROI Delay Line Design Contract . ... Changes From Pm Wiki 1 . This page is intended to describe features of PmWiki 1.0 that have been changed or eliminated in PmWiki 2.0. ... action=post no longer exists -- posting a new page is now performed by using ?action=edit with the post control set to a true value. ... PmWiki's ReadPage() function no longer supplies default text for non-existent pages -- this is now decided by whatever functions need the page. ...

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• OptInt PmWiki : Other Variables
• OptInt PmWiki : Delay Line Systems Engineering Documents | History
• OptInt PmWiki : Interface Control | History

A.I.Neishtadt . Probability phenomena in perturbed dynamical systems . ... If in a deterministic dynamical system a small variation of initial conditions produces a significant change of motion, then the behavior of such a system is practically non-distinguishable from a random one. ... Such quasi-random behavior exists also in systems which differ by an arbitrary small perturbation from systems with a very simple (periodic or quasi-periodic) dynamics. ...

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• Space physics cordinate systems
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Open Systems Centre   . ... Principles of Open Systems . TR ISO/IEC 14252-1996 . l Open system: A system that implements sufficient open specifications or standards for interfaces, services, and supporting formats to enable properly engineered application software . ... l Profile: A set of one or more base standards and, where applicable, the identification of chosen classes, subsets, options, and parameters of those base standards that are necessary for accomplishing a particular function. ...

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• SYNCHRONIZATION OF DRIVE-RESPONSE SYSTEMS ON CONDITION OF A LARGE MISMATCH OF
• GOVERNMENT OPEN SYSTEMS INTERCONNECTION PROFILE (GOSIP)
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Astronomy Picture of the Day . Upsilon Andromedae: An Extra Solar System . ... Credit: Lynette Cook Explanation: Yesterday, astronomers announced the discovery of the first system of planets around a normal star other than our Sun . Previously, only single planet star systems had been found. ... This star system is quite different from our own Solar System , however. ... The drawing above is an artist's depiction of the Upsilon Andromedae system and its innermost planet. ...

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• Астронет > Upsilon Andromedae: An Extra Solar System
• Journal "Peremennye Zvezdy"
• The Decade that Defined Star System

Subject of Astronomy. ... Celestial Sphere. ... Spherical Frames of Reference: Horisontal and Equatorial Coordinates, Ecliptical System. ... Transformation of Celestial Coordinates. ... Change of Object Coordinates as a Result of Diurnal Rotation of Celestial Sphere. Phenomenons, Which Lead to Celestial Coordinates Change. ... Motion of Equator, Ecliptic, and Their Poles. ... Diurnal Solar Motion on Different Latitudes. ... Time Equation. ... Apparent Motions and Configuration of Planets. ...

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• Spherical and Practical Astronomy

... The following changes have been initiated by user feedback: . ... SAOtng command line options can be stored as csh-style environment variables in the ~/.saotng file. ... See SAOtng Command Line Options for more information. ... See SAOtng Colormap Considerations for more information. ... We have added the ability for SAOtng to resize image frame #1 each time a new image is loaded (as did SAOimage). ... See Autoflip of Images for more information. ... See Marker Analysis in SAOtng for more...

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• Spatial Region Coordinates
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The pnet, prun, psrv suite of programs . ... pnet -> prun -> psrv -> disc . ... It can forward commands from pnet to psrv and pass back the replies. prun starts the data taking, gets the data from the spectrometer, and passes it via a socket to the psrv program running on the file server. ... There is a psrv task for each prun task (one for each subband on a spectrometer box). prun starts psrv via xinetd by connecting to the well known port address. psrv accepts commands from pnet via prun. ...

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• Compressor monitor
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... April 16, 1999 . Upsilon Andromedae: An Extra-Solar System . ... Explanation: Yesterday, astronomers announced the discovery of the first system of planets around a normal star other than our Sun . Previously, only single planet star systems had been found. ... This star system is quite different from our own Solar System , however. ... The drawing above is an artist's depiction of the Upsilon Andromedae system and its innermost planet. ... About APOD > . ...

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• Porting Hints
• APOD: December 29, 1999 - The Decade that Defined Star System
• tickadj - set time-related kernel variables

... Image courtesy of Korea Astronomy and Space Science Institute . ... There are already 29 multi-planet extrasolar planetary systems discovered (including this last one), so what makes this particular system unique? ... International Year of Astronomy, Ireland National Node . ...

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• Showing and setting time
• Background
• Computer Systems

The First Law (1): Energy is Conserved in a closed system: . ... We usually consider work and heat flow as the two kinds of energy . The Second Law (2): The Law of Entropy: . ... The amount of disorder increases . ... You can not go from a disordered system to an ordered system without inputting more energy (this is the most important attribute of the second law) . ... In no way can we recover work of that this disordered system without putting energy into the system. ... More on Thermodynamics . ...

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• Flywheels and Energy Storage
• Rooftop Collector Systems
• The Three Planet System

. Dedicated to 40th anniversary of the . first artificial Earth satellite launch . Russian (Win) .

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... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... solar system . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing Podcasts . Observe the Solar System . Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• planetary systems | Astronomy.com
• Tour the Solar System | Astronomy.com
• solar system | Astronomy.com