... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

Orbital intersection . ... Structure of Taurid stream . ... Meteoroid swarm and Taurid fireballs . ... The following four diagrams schematically show four different Taurid orbits and the orbits of Earth and Jupiter. ... The Taurid stream contains particles (small, solid grains) at different stages of their precession cycles. ... The study of when a meteor stream can produce a meteor shower is the study of when precession brings orbits to intersection with Earth, or e.g. with Mars . ...

Federal Communications Commission (ix)(A) For a station authorized pursuant to § 73.215 or Sec. § 73.509, a showing that the root mean square (RMS) of the measured composite antenna pattern (encompassing both the horizontally and vertically polarized radiation components (in relative field)) is at least 85 percent of the RMS of the authorized composite directional antenna pattern (in relative field). ...

... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

... In Spiral . Between spiral . ... Center of vortices . ... to density exterema . ...

To understand the impact of low metallicities on giant molecular cloud (GMC) structure, we compare far-infrared dust emission, CO emission, and dynamics in the star-forming complex N83 in the Wing of the Small Magellanic Cloud (SMC). ... This allows us to resolve the relative structures of H2, dust, and CO within a GMC complex, one of the first times such a measurement has been made in a low-metallicity galaxy. ... ADS Citation Query . citations = 59 . citations vs. year [year,citations] . ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... News . ... Research areas . ... English News . ... In the spring of this year the scientists of Samara State Aerospace University (SSAU) will proceed to integrated exploration environment in the near-Earth space and its impact on the engineered materials of spacecraft. ... This spring it will be launched into space by the first carrier rocket from the new Russian space launcher complex Vostochniy. ... The equipment set is designed and manufactured in SSAU Institute of Space Device Engineering (ISDE)...

UFO Forum Message . Forums: . ... Post . ... It Really Is Relative . ... Post Message | ... If you are on the Earth the moon does not rotate around its own axis. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

OFFICIAL PRESS RELEASE . ... the International Space Station . ... P. Semenov, Technical Manager of the Russian Manned Space Programs, General Designer of S.P. Korolev RSC Energia, Academician of the Russian Academy of Sciences, Frederick D. Gregory, NASA Deputy Administrator, N.A. Anfimov, General Director of TsNII of Machine-Building, Academician of RAS, as well as representatives of Roskosmos, NASA, Russian enterprises and organizations participating in the implementation of the ISS program. ...

... Of course, the scope of chaos is vast, and we do not dare to cover it all. ... He will highly appreciate your help in compiling the list of URLs to such scientific groups and institutions. http://www.cplire.ru/win/InformChaosLab/ - InformChaos Lab (Moscow) . http://chaos.ssu.runnet.ru/ - Laboratory of Nonlinear Dynamics at Saratov State University (Saratov) . ... http://optics.npi.msu.su/sci/chaos.html - Chaos in laser systems . ... http://www.chaotic.com - Randle, Inc. ... Time: 2-6 July, 2001 . ...

... 1Wills Accurate measurements of relative flux density have been made between frequencies of 468 and 5009 MHz for 300 radio sources selected from Parkes catalogue. ... Excluding the incertainties in scaling these flux densities to an absolute system, rms errors vary from 0.24 Jy and 2.4 % at 635 MHz to 1.8 % at 2700 MHz; uncertainties in "absolute" scaling are thought to be about 45 %. ... Some sources whose spectra may be useful for flux density calibration are noted. ...

Astronomy Picture of the Day . A Gravity Map of Earth . ... 13.11.2001 . ... Credit: JPL , NASA Explanation: Is gravity the same over the surface of the Earth ? ... To better map Earth's gravity and hence better understand its interior and past, NASA plans to launch the Gravity Recovery and Climate (GRACE) satellite in February. ... U. Based on Astronomy Picture Of the Day . Publications with keywords: surface gravity - Earth . Publications with words: surface gravity - Earth . ...

... epiclccorr (epiclccorr-1.0.8) [?? ... epiclccorr will treat all these corrections individually, developing and designing specific algorithms to correct the Relative Corrections . GTIs correction will be calculated using the GTI extensions located in the time series file, if any. ... Exposure correction is the time inside each frame where the CCD is taking data correctly (no counting or MIP problems). ... This correction will be calculated using the Live Time and Frame Time values of each mode. ...

... Impedance . Electrical impedance, or simply impedance, describes a measure of opposition to a sinusoidal alternating current (AC). Electrical impedance extends the concept of resistance to AC circuits, describing not only the relative amplitudes of the voltage and current, but also the relative phases. ... Resistance is the real part of impedance; a device with a purely resistive impedance exhibits no phase shift between the voltage and current. ...

Understanding Europa's Radiation Environment and How it Influences Landing Site Characterization G.W. Patterson, L.M. Prockter, C. Paranicas Applied Physics Laboratory Introduction · The surface of Europa is weathered by charged and neutral particles, micrometeroids, and photons. ... Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... 2004) Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... Figueredo et al., ...

. You can define a file or directory by its location in relation to your current directory . The pathname is given as / (slash) separated list of the directories on the route to the file (or directory) from your current directory. A .. (dot dot) is used to represent the directory immediately above the current directory. In all shells except the Bourne shell, the ~ (tilde) character can be used as shorthand for the full pathname to your home directory. Examples . Did You Know? .

... A document window is shown, with 8 lines (numbered 1 to 8), each 24px high. The text of the "outer" box (at the end of line 1, halfway into line 2, and halfway into line 3) is shifted upward 12px. The text of the "inner" box, thought shifted upward as well, has been relatively positioned so that it lies in its normal flow position at the end of line 2. ... The lines, as they appear in the image, contain: Start 1 Beginning of body contents. 2 of outer contents. Inner contents. ...

We investigate the relative importance of starbursts and active galactic nuclei (AGN) in nuclear activities of ultraluminous infrared galaxies (ULIRGs) based on chemodynamical simulations combined with spectrophotometric synthesis codes. We numerically investigate both the gas accretion rates (ARs; m acc ) on to supermassive black holes (SMBHs) and the star formation rates (SFRs; m sf ) in ULIRGs formed by gas-rich galaxy mergers and thereby discuss what powers ULIRGs. ...

... First we introduce the iteration theory of quadratic polynomials and the classical ?Mandelbrot set? as an area of mathematics that is interesting, deep, and beautiful, but that seems apparently useless. Then we discuss Newton's root-finding methods, especially in order to find roots of complex polynomials: this is a classical theory that is generally known as useful. In particular, we show some very recent results on the theory of Newton's method that remained open for many years. ...