... The most powerful and widely used methods to calculate the scattering matrix of a fractal cluster are based on the coupled dipoles methods (e.g. the Discrete Dipole Approximation, DDA) and the theory of light scattering by a cluster of spherical particles [2-4]. ... At present the procedure of calculation of the scattering matrix is well developed for both an oriented cluster of spherical particles and for chaotically oriented clusters of such particles [4]. ...

... FTP access the basic models is here . ... Below, we put short descriptions of the used SED models for the photometric redshifts providing by the current server . ... The uniqueness of this model consists in expanding to the near IR (NIR) of Rocca-Volmerange and Guiderdoni's (1988) atlas of synthetic spectra with a revised stellar library, which includes parameters of cool stars. ... Homepage of the GISSEL model). ... Another model used earlier is the model of synthetic spectra of Poggianti (1997). ...

Basics of magnetosphere satellite experiment. Main steps of data processing. Modern conception of Earth magnetosphere. ... Empirical models of the bow shock, magnetopause and neutral current sheet positions. Main principles of construction of empirical magnetospheric magnetic field models. ... Current systems in the Earth magnetosphere. Chapman- Ferraro current. ... Tsyganenko 1996 model and its application to satellite data processing. ... Basics of statistical data analysis. ...

... October 8, 15:00 15:40 . ... PDF [7.2б MB] October 8, 15:40 16:10 . ... The sky brightness, atmospheric extinction, cloud coverage and auroral appearance are obtained from these images. ... Aurorae are identified by comparing the observed sky brightness to the sky brightness expected from this model. ... The identification of few potential sites for future's larger facility require several instruments, measuring various site characterizing parameters. ...

... Meade Instruments Corporation . ... Refracting telescopes (Meade Models NG-60, NGC-60, DS-2070AT, ETX-70AT, LXD55-AR5, LX55-AR6 ) and mirror-lens telescopes ( ETX-90AT, 105AT, 125AT, LXD55-SC8, 8LX90, LX200 GPS Series ) are generally more versatile in a wide array of land and astronomical applications. ... The intermediate-level observer, or the non-casual telescope user who wishes to purchase one telescope for a lifetime, should consider a Meade Model LXD55 series, 8LX90, or LX200GPS. ... Meade 4M ...

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

... 2.3 Establishing the Extragalactic Distance Scale . ... 2.3.2 The Second Rung: Distances to stellar clusters . ... 2.3.4 Distances to Local Group Galaxies . ... The Luminosity Function of Planetary Nebulae . ... 3.2.2 Clusters of Galaxies . ... 4.2 Evidence for Dark Matter as a Function of Scale Size . ... 4.3 Other Dark Matter Indicators for Galaxies . ... What is the nature of the large-scale distribution of matter in the universe as traced by the three-dimensional galaxy distribution? ...

... The magnetic field of the Earth has been investigated by satellites for several decades now, and enough of it is known to model its average strength and shape during different levels of overall magnetic activity. Presently the most used empirical global magnetic field models are the Tsyganenko models (1987, 1989) , referred to as T87 and T89, respectively, although even these consist of several submodels. ... Earth's magnetic field from T89c model during Kp=2 for different seasons. ... Res. ...

polimodel -- Produce model linear polarization and position angle images . ... Whether to apply random errors to output polarization and position angle values. seed = "" [integer] . ... This task produces a model linear polarization image and corresponding position angle image from an input image assumed to represent intensity (Stokes I parameter). ... A threshold for the input image can be defined such that polarization and position angle are not computed for input values less than this threshold. ...

The Earth's magnetosphere global structure is conditioned by the interaction of the Solar wind and Earth's magnetic field. ... Solar wind (SW) - the region outside BS; . ... Auroral field lines (AUR) region - the funnel-shape cavity restricted by the geocentric distance of the order of 6 RE, between surfaces formed by magnetic field lines emerged from the polar and equatorial OVAL borders; . ... Fairfield D.H., Average and unusual location of the Earth's magnetopause and bow shock, J. Geophys. ...

In this chapter we will consider an example of visual expert system written on the Actor Prolog language. ... There are a lot of methods of oil field bed stimulation that increase output of the oil production: thermal, physical-chemical, gas, microbiological, and others. ... Fig. ... The Top-Most diagram consists of three blocks: the "Describe parameters of hydrocarbon field" block, the "Check adaptability of existed methods of oil production" block, and the "Display solution" block. ... Gas methods. ...

... Fit the ring around the equator and then change its inclination from 0 degrees (equatorial orbit used by geosynchronous satellites) to 28.5 degrees (space shuttle orbit) to 51.6 degrees (space station orbit) to 90 degrees (polar orbit used by spy satellites). by Rob Landis, Space Telescope Science Institute . ... With so many satellites now in orbit, it is likely that you have seen an artificial satellite zipping across the night sky. ... http://www.amsat.org/amsat/ftpsoft.html . ...

... Postulates and hypothesises during Standard Solar Model construction. Main course - an evolution of hydrogen abundance. Main work - a sequence of stationary models. What is a stationary model - postulates of . a) dynamic equilibrium, . b) local enegry conservation (existence of enegry sourse), . ... Equilibrium of gravity and gas pressure . ... Gradient of sound speed. ... Equation for pressure disturbace as result of sound speed changes (liniarization of hydrostatic equation) . ...

... Karpachev A.T., IZMIRAN, e-mail: karp@izmiran.ru . ... The empirical median model of the shape and position of the MIT (Main Ionospheric Trough) in the Northern and Southern Hemispheres is presented. ... Geomagnetism and aeronomy, v.26, ? ... Karpachev A.T., Afonin V.V. Dependence of the ionospheric trough occurrence probability on the season, local time, longitude, and level of magnetic activity Geomagnetism and aeronomy, v.38, ? ... Karpachev A.T. Characteristics of a Ring Ionospheric Trough. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... Line radiative transfer in C 18 O, HCO + , and CS lines is considered in a spherically symmetric chemo-dynamical model of a starless core, evolution of which is driven by the ambipolar diffusion. Theoretical line profiles are compared to observational data on the well-known L1544 core, which is one of possible candidates for collapsing protostellar clouds. ... Comparison between modelled and observed spectra suggests that L1544 has flattened structure and is observed at some inclination. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

... G.P.Panasenko (J.-V.Poncelet, Moscow) Multiscale problems: junction of models of different dimension, applications to hemodynamics. ... Gubkina , Moscow, Russia . ... The workshop is devoted to an important trend in mathematical modeling, the multiscale methods and its applications in biology and medicine. ... It was organized in the frame of the thematic year on the multiscale methods and modeling in biology and medicine organized by the Russian-French laboratory J.-V.Poncelet. ...

... Educational programs (English) . ... Additional training . ... Samara State Aerospace University Education Educational programs (English) Mathematical Modeling and Informational Technologies in Photonics . Degree awarded (diploma or credits): Master of Science in Photonics. ... The Master s program is focused on the project-oriented activity (Applied Master s program the Program). ... Areas of the professional activity for graduates with the Master s Degree include: . ... Professional skills: . ...

Cost Estimating Web Site . ... 2005 NASA Cost Analysis Symposium Databases . ... World , European Communities , Other European Countries , Americas , Asia , Africa , General US , US Federal Government , US Department of Defense , Aerospace Industry , NASA , Science & Engineering Handbooks . NASA Cost Estimating Handbook 2004 , Parametric Estimating Handbook .. ... Consumer Price Index , Employment Cost Index , GDP Deflator , Import Price Index , NASA New Start Index , Producer Price Index . ...