... COMPUTER SIMULATION OF RADIOWAVE MULTIPLE SCATTERING EFFECTS IN IONOSPHERE USING MONTE-CARLO METHOD . ... Distribution of reflected radiation on the ground is computed. ... Such influence can be remarkable if the scattering is multiple, i.e. the optical thickness for the scattering process is considerably greater than a unit. ... Radiation energy transfer in the slab is modeled by distribution of some particles carring small portions of radiation energy. ... The isotropic plasma approximation is...

... Despite the use of counterweights, I have had ongoing problems with preventing unwanted motion in altitude, particularly during star parties when everyone seems to want to lean on the telescope while observing. ... After some difficulties at a windy star party a few years ago at the Boston Museum of Science, I designed a simple and very effective altitude brake and slow motion control which can be assembled very quickly and at minimal cost. ... The other end of the arm attaches to a turnbuckle*. ...

To construct two-dimension distribution of minor planets user should specify elements/ parameters/ function that will be plotted as abscissas and ordinates. In three-dimension case one should add to them the element plotted on Z axis. ... Though you may choose elements plotted along different axes at will, often there is good reason to plot such elements as a, n, or n" along X axis (two-dimension distributions) and to plot them along Y axis in three-dimension case. ...

. Red histogram is 2dF QSO Redshift Survey . Blue histogram is Durham/AAT QSO Survey . | Front page | . | << - Number Counts | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

... 2006: . The distributions of radial ages and chemical compositions of the stellar population for several elliptical galaxies were measured from the BTA observations down to the record (to date) distances from the nucleus. ... Photometric distances were measured and peculiar radial velocities were determined for 3000 spiral galaxies from the 2MFGC catalog, compiled at the SAO RAS based on the 2MASS infrared sky survey. ... Archive . ...

. This Directory contains Model of distribution of density, temperature and effective collision freguency of electrons. Yu.K.Chasovitin. 1998. This Directory contains The program RIM98 for calculating the parameters of the ionosphere to use the "Reference Ionospheric Model-98" (RIM-98).Yu.K.Chasovitin. 1998.

. SXG Data Center . SDC overview . Spectrum-XG . SXG instruments models . Data archive . General astronomical utilities . Proposal Preparation . ABOUT SXG-SDC . The SXG-SDC is the interface between the Spectrum-X-Gamma satellite and astronomical community. Data from the SXG instruments will be analysed, archived and distributed by the SXG-SDC at the Space Research Institute, Moscow (IKI). Last updated: Feb, 2001 by WebMaster

Download Izmccd (~2.7 MB). ... a) a choice of the best mode of measurements of stars and objects ("Properties/Measurement"), . b) a choice of reference stars. ... 1) necessity of presence on an image of a plenty of stars (we recommend to apply this mode, if on the frame of reference stars is more 100) . ... Sx and Sy depend from residuals at all reference stars (reference stars are marked by blue color). ... These residuals are the image of the star a minus function of a profile for each pixel. ...

Where and how are we looking for evidence of life? ... Because the universe is an immense place, it makes sense to search for evidence of life in more than one way. In addition to focusing on what we know about life on Earth, especially in extreme environments, astrobiology currently comprises three basic types of searches in space, each employing different technologies, looking in different places, and expecting to find different kinds of data: . ... The search types ? ... Extrasolar Planets vs. ...

Instruments and Methods 125 Long time tracking of the Sun with RATAN-600 in Radio Schmidt mode V.B. Khaikin, E.K. Ma jorova, I.G. E mov, O.A. Victorov, V.M. Bogod, and S.Kh. ... Cosmic source tracking with unmovable main mirror in a form of cylinder requires a special secondary mirror of double curvature 12 m size or a phased array in the focal plane of an ordinary secondary mirror Ka jdanovskij, 1980. ... Fig. 4 shows the Sun tracking with new drive in speed control mode starting from meridian. ...

... When NASA's Genesis spacecraft returns samples of the solar wind to Earth in September, those samples will be brought to JSC. ... Genesis Searching for Genesis of the solar system by Bill Jeffs Solar wind samples coming to JSC may hold clues Pat Rawlings continued on page 14 Roundup 13 Genesis To accomplish these tasks, JSC built two ultra-clean class 10 cleanrooms in 1999. ... Apollo Flight Director Gene Kranz spoke of the earliest days of flight control before hanging the Apollo 1 plaque. ...

... Aims: Today, large ground-based instruments, like VISIR on the VLT, providing diffraction-limited (about 0.3 arcsec) images in the mid-infrared where strong PAH features appear enable us to see the flaring structure of the disks around Herbig Ae stars. Although great progress has been made in modelling the disk with radiative transfer models able to reproduce the spectral energy distribution (SED) of Herbig Ae stars, the constraints brought by images have not been yet fully exploited. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... The main field of my investigations is stellar spectrophotometry. As a result of scientific activity of our group spectrophotometric catalog was created including energy distribution data on 900 stars in the range 3200-7600AA and 250 stars in the range 6000-10800AA (Voloshina et al., Spectrophotometry of Bright Stars, ed. I.N.Glushneva, 1982, Moscow, Nauka, in Russian). ...

... Description of e-Mail Commands . Abstract and Paper preparation for Put . ... Physics hep-th @ xxx.lanl.gov High Energy Physics - Theory, 8/91 hep-lat @ xxx.lanl.gov High Energy Physics - Lattice, 2/92 hep-ph @ xxx.lanl.gov High Energy Physics - Phenomenology, 3/92 cond-mat @ xxx.lanl.gov Condensed Matter, 4/92 astro-ph @ xxx.lanl.gov Astrophysics, 4/92 gr-qc @ xxx.lanl.gov General Relativity Quantum Cosmology, 7/92 nucl-th @ xxx.lanl.gov Nuclear Theory, 10/92 chem-ph @ ...

... V.N.Kurlov, S.N. Rossolenko 'Growth of shaped sapphire crystals using automated weight control.' J. Cryst. ... Институт физики твердого тела РАН . Лаборатория профилированных кристаллов . 1998 . ... Growth., v. 187, 1998, pp. ... 1999 . ... V.N.Kurlov, F.Theodore 'Growth of sapphire crystals of complicated shape' - Cryst. ... P.A.Gurjiyants, M.Yu.Starostin, V.N.Kurlov, F.Theodore, J.Delepine 'Effect of growth conditions on the strength of shaped sapphire' - J. Cryst. ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Winer Observatory gratefully acknowledges the generous support of those listed below. ... We thank our donors and hold them up as models of how corporations in America can behave responsibly in the communities in which they do business. ... Telescopes, parts, and accessories . ... 100,000 . ... Hughes Missile Systems . ... Miscellaneous electronics . ... Terra Universal, Inc. ... EFI Electronics Corp. ... 2013 Winer Observatory. ...

... Space flight . Crew training . ... honing the skills of performing the tasks of operating the orbital (suborbital) spaceship in a normal autonomous flight and in case of occurrence of off-optimum situations; . ... preparing for conducting visual observations, photographing and video filming envisaged by the flight program; . ... preparing the astronaut's body to the effect of space flight factors, honing the skills of operating the spaceborne medical facilities, rendering self and mutual aid; . ...

... Первая десятка | ... Первая десятка "Русского переплета" Темы дня: . ... PET: A Proton/Electron Telescope for Studies of Magnetospheric, Solar, and Galactic Particles. ... Geosciencies and Remote Sensing, 31, 535, 1993. ... 1 D T distributions, obtained in GAMMA-1, SAMPEX PET, MARIA-2 and ELECTRON experiments (M>4, D L< ± 0.1). Fig.2 D T distribution, obtained on board SAMPEX (M>5, D L< ± 0.05) . ...

ON-LINE STATIC EIT RECONSTRUCTION SERVER . ... Static image reconstruction from the data measured in vivo is still intriguing problem in EIT. ... dipole (adjacent) current injection and voltage measurements on pairs of adjacent electrodes (like in Sheffield systems) . ... You can view examples of the text files for polar , dipole and trigonometric injection, use them for testing the server and find more details on HOW TO PREPARE INPUT FILE FOR THE ON-LINE EIT RECONSTRUCTION SERVER page. ...