Chair of solid state physics . ... The Physics of Phonons . ... In the first part of the course “The Physics of Phonons” the dynamics of atoms in one- and three- dimensional crystalline lattices is considered in detail. The quasiparticle conception in solids, taking phonons as an example, is discussed; creation and annihilation operators of phonons, main properties of acoustic and optical phonons dispersion laws, density of phonon states. ... Crystalline state. ... Acoustic and optical phonons. ...

IMPLEMENTATION OF THE MIR ORBITAL COMPLEX . MISSION PROGRAM . Since the launch of core module on February 20, 1986, till March, 23, 2001 Mir Orbital Complex (Mir OC) was in operational use on orbit under the Flight Test Program of the module-based permanently manned Mir station. A total of more than 100 launches of different spacecraft and modules (including the US Shuttle launches) were performed under the Mir Complex Mission Program. ... Official WEB-site of S.P.Korolev RSC Energia . ...

IBIS Data Analysis . ... IBIS . ... Flat Fielding - Introduction . The images obtained by IBIS will have intensity variations across the field of view that are not due to the solar image, but rather caused by instrumental effects that alter the observed intensity in each point of the field of view. ... IBIS Flat Fielding Techniques . ... Therefore, it is desirable to obtain the flat field measurements center on a point along the equator near the heliographic center of the solar disk. ...

... SUPER RATIO . ... On this page I will present the most important (on my opinion) idea on Intellegence Life in the Universe . ... On the problem of the Super Ratio in astrophysics" . ... As a matter of fact, this is the main problem of the modern natural science. ... Here I shall try to speak about the most important problem of the modern natural science, the problem which is undoubtedly, of more importance than discovery of Blacks Holes, creation of Grand Unification Theory or Artificial...

... Research . Projects . ... The name of the project APEX is a reduction from words " Active Plasma Experiments " . The core of the project are active experiments with injection of electron and (or) plasma beams from a board of the satellite with simultaneous registration of the phenomena, produced by interaction of injected beam with background plasma. ... Active experiments utilise modulated electron beam accelerator and source of modulated xenon plasma beam on the main spacecraft APEX. ...

... I would several points which we faced during our everysolved for better quality of individual ACs' and EOP products · There are two main EOP products provided by two IERS Product Centers on Earth Orientation (Earth Orientation Center (EOC) and Rapid Service/ Prediction Center (RSPC)). ... However, the latter is not provided by the IERS. ... ITRF · Using ITRF in computation of EOP series produced by various ACs seems to be a necessary condition to provide the consistency between the IERS products. ...

... The difference is that inertia is an inherent property of matter, while weight also depends on gravity. ... They use gravity, balancing its force on the astronaut's body against a calibrated spring or against the force of gravity on some calibrated weights. ... Using scales and the local force of gravity, one can determine gravitational mass; or else, one might dispense with gravity, like the astronauts aboard Skylab, sand measure the "inertial mass," and in principle they may differ. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Investigations of the ionospheric response to strong magnetics storms which are usual for our latitudes, are of great interest. ... In the figure, we present ionospheric parameter dynamics during three perturbed days in July 2000. ...

... A scale which varies like this is called a logarithmic scale . Armagh Astropark's "Hyper-Cube" illustrates the concept of logarithmic scale using a series of nested cubes, each with sides ten times longer than the cube inside: . Cube 1: 8 cm. ... Just like space, time is often best represented on a logarithmic scale: we know a lot about different decades in the present century, but (to us) one decade in the Jurassic era would be much the same as any other. ... 1 AU = 150,000,000 km. ...

... 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. ...

Application of IVOA software tools for radio sources investigation Zhelenkova O., Kopylov A., Chernenkov V. The interrelationship between the objects of astronomical catalogs in the different ranges of electromagnetic spectrum and their association into the real astrophysical source has obvious scientific interest. ... We used NVSS as the reference coordinate catalog. ... For 60% of radio sources identified with the objects of the radio catalogs we discovered optical candidates in SDSS survey. ...

... We will present recent results obtained jointly with Sergei Matveev and Carlo Petronio on two-sided bounds for complexity for some infinite families of closed orientable hyperbolic 3manifolds. ... Phys. Kl. 83 (1931), 168Ё ac 174. ob [4] S. Matveev, C. Petronio, A. Vesnin, Two-sided complexity bounds for LЁ el l manifolds, Dokl. ... 5] S. Matveev, C. Petronio, A. Vesnin, Two-sided asymptotic bounds for the complexity of some closed hyperbolic three-manifolds, Preprint math.GT/0602372. ...

This complicated procedure is designed to allow the the login shell to be set up to behave differently to subsequent shells. And since environment variables only need to be initialised once at login, the behaviour of other shells can be changed by setting shell variables in .cshrc which is read each time a new shell is invoked. Usually, you are are advised to set environment variables in your .login file and shell variables in your .cshrc . ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

Dynamical chaos in the problem of magnetic jet collimation O. Yu. ... In the paper of Bisnovatyi-Kogan (2007) magnetic collimation resulting from torsional oscillations of a cylinder with elongated magnetic field and periodically distributed initial rotation around the cylinder axis was considered. ... Space and time periods of oscillations depend on the conditions of jet formation: the length-scale, the amplitude of the rotational velocity, and the strength of the magnetic field. ...

To order one of the possible additional functions use list box at the top left of the Select elements dialog box. ... On each element El in this column one can impose selection conditions of the types . ... El >= B AND El <= C. If B > C, then selection will contain all minor planets with element El complying with disjunction of conditions: . ... If conditions are imposed on several elements, then selection contains only those minor planets, which satisfy all requirements. ...

... Let's assume initial conditions of 1000 Zinder-noodle plants scattered over these 1000 acres. ... We now introduce a new parameter: The blade-muncher. ... One blade-muncher eats 1 zinder-noodle every 10 days. ... Again, go back to the initial conditions but now we introduce the Zardhogs. ... Following Sunshine Moonbeam's edict, describe the evolution of the system if we start with 1000 zindernoodles on 1000 acres, an initial population of 10 blade-munchers and 2 Zardhogs. ...

Lessons learned from the Thirty Meter Telescope site testing Tony Travouillon Sebastian Els, Angel Otarola, Reed Riddle, Matthias Schoeck, Warren Skidmore TMT.XXX.PRE.05.0XX.DRF01 1 Introduction TMT and its Site testing. Important choice before going on site. ... Considerations during analysis of the data. TMT.XXX.PRE.05.0XX.DRF01 2 Some Background about the TMT Site Testing TMT is a 30m, segmented, RitcheyChretien telescope design. ... ASCA Cloud Cover Analysis So how do we do it in practice? ...

... Port-based vhosts . ... Port 80 ServerName server.domain.tld NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot /www/domain ServerName www.domain.tld .. ... Port 80 ServerName server.domain.tld NameVirtualHost 111.22.33.44 <VirtualHost 111.22.33.44> DocumentRoot /www/domain ServerName www.domain.tld .. ... Port 80 Listen 111.22.33.44:80 Listen 111.22.33.55:8080 ServerName server.domain.tld <VirtualHost 111.22.33.44:80> DocumentRoot /www/domain ServerName www.domain.tld .. ... VirtualHost> . ...