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... Matrices and their invariants, such as order, rank, determinant, play an outstanding role in mathematics. ... To be a little more precise, nonzero square matrices of order $r+1$ (modulo multiplication by a nonzero constant) are represnted by points of the projective space $\Bbb P^{(r+1)^2-1}$. Geometrically, we consider the subvariety of matrices of rank one which is just the Segre variety $S=\Bbb P^r\times\Bbb P^r\subset\Bbb P^{(r+1)^2-1}$. ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

... X Ray Rainbows . ... CfA ), CXC , NASA Explanation: A drop of water or prism of glass can spread out visible sunlight into a rainbow of colors . ... X-ray light too can be spread out into a spectrum ordered by energy ... but not by drops of water or glass. ... NASA Official: Jay Norris. ... Publications with keywords: XTE J1118+480 - X-ray - spectrum - light - rainbow . Publications with words: XTE J1118+480 - X-ray - spectrum - light - rainbow . ... Chandra X Ray Telescope . ...

... HTML 3.0 добавляет несколько атрибутов к тагам списков для выбора разных типов маркеров в ненумерованных списках и разных схем нумерации в нумерованных. Можно включать такие атрибуты в сами таги <LI> (List Item), чтобы сменить тип маркера в середине списка. ... Ненумерованный список. ... Атрибуты маркеров в ненумерованном списке . ... UL TYPE =DISK> Таг создает сплошные маркеры такого типа, как в списках первого уровня по умолчанию . ... Атрибут РLAN= создает ненумерованные списки без маркеров. ...

This page is devoted to information on Supernova 1998ey in NGC 7080 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. ... Ron Arbour discovery image 12/5.816/98 . ... Ron Arbour image 12/10.791/98 UT . ... cf. vsnet-chat 1503 . ... The new object, SN 1998ey, locates at R.A. = 21h30m00s.56, Decl. = +26o43'24".2 (2000.0), which is about 18" west and 20" north from the nucleus of the host SBb galaxy NGC 7080. ...

... The directives provided by mod_access are used in <Directory> , <Files> , and <Location> sections as well as .htaccess files to control access to particular parts of the server. ... The Allow and Deny directives are used to specify which clients are or are not allowed access to the server, while the Order directive sets the default access state, and configures how the Allow and Deny directives interact with each other. ... The Allow directive affects which hosts can access an area of the server. ...

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... 2 Ori 4 Ori 4 Ori 4 Tau 9 Gem 1 Aur 1 Aur 1 Aur 1 CMa 1 Pup 1 Pup 1 Pup 1 Mon 1 Hya 1 Cnc 1 Cnc 1 Leo 5 Leo 5 Leo 6 Leo 5 Leo 5 UMa 5 UMa 7 UMa 3 UMa 5 UMa 5 UMa C CVn 5 CVn 5 CVn 5 CVn 5 UMa 5 Dra 8 Com 2 Com 5 CVn 2 Com 5 Com 5 Com 5 Com 8 Vir 8 ra 02 01 01 00 00 00 23 01 01 02 03 05 05 05 05 05 06 05 05 05 06 07 07 07 07 08 08 08 10 10 10 11 11 09 09 11 11 11 12 12 12 ...

... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

... VINOGRADOV PAVEL VLADIMIROVICH . ... ISS flight engineer . Roskosmos 1st class test-cosmonaut and cosmonaut-instructor (Russia) . ... From August 1996 to August 1997 Vinogradov trained as a flight engineer of the Mir-24 prime crew. ... By the decision of the Russian Space Agency Panel, though, Vinogradov was withdrawn from the ISS crew team and assigned to the Mir-28 Expedition as a backup crew flight engineer and to the Mir-29 Expedition as a prime crew flight engineer. ...

... Киевский клуб любителей астрономии "Астрополис" > . ... Запорожский клуб АЛЬТАИР > . SUN: Apparent Geocentric Positions, astronomical script . ... Жизнь клуба . ... 05 Май 2006, 03:02:20 ? ... SUN Apparent Geocentric Positions . ... 2006 May 05 00h00m00s 2h 47m 38.744s +16* 09' 09.47" . 2006 May 06 00h00m00s 2h 51m 30.299s +16* 26' 14.04" . 2006 May 07 00h00m00s 2h 55m 22.396s +16* 43' 02.11" . ... 2006 May 05 00h00m00s 2h 47m 38.729s +16* 09' 09.43" . ...

... The following factors that affect the final accuracy of the reflecting surface in ground conditions were considered to be the most important: the accuracy of manufacturing of the central mirror and lobes , the accuracy of their installation on the spacer , the accu racy of systems of weight unloading (the weight unloading of lobes during their manufacturing and assembly of the reflector as a whole), the ... Stan dard deviations of lobe surfaces were 0.13­0.21 mm. ...

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

... The main results of the research conducted on the MIR Station in various areas encompass: . ... More than 6700 experiment sessions were conducted on the Station . ... Methods and equipment for conducting repair and refurbishment activities were tested to extend the Station and hardware service life . ... More than 2450 experiment sessions were conducted . ... More that 130 experiment sessions were conducted . ... INTERNATIONAL SPACE STATION | ... Official WEB-site of S.P.Korolev RSC Energia . ...

... What is the notion time? ... Generally speaking, it is an order of changing events, an order of constantly changing conditions of solids, Universe - being. ... The time, determined for the given longitude, is called the local time . ... A uniform system of time counting - ephemeris time is tested by observations of the Moon turning around the Earth. Fully independent from astronomic observation uniform system of the time counting is based on the concept of atomic second (see quantum watches ). ...

University Satellites and . Space Science Education . ... Pilipinas, Game KNB?!, order phentermine now.com , [url=http://wiki.sla.org/display/~phentermine]order phentermine now.com[/url] , http://wiki.sla.org/display/~phentermine - order phentermine now.com , international order phentermine , [url=http://commercialestimators.com/members/phenterxmine.aspx]international order phentermine[/url] , http://commercialestimators.com/members/phenterxmine.aspx - international order phentermine , . ...

... Contacts . 2011: . ... In collaboration with the UFU . ... It is shown that the application of modern kinematic components (the ball screws, CV joints, hybrid gearboxes), stepper and servo-controlled drives and encoders improves the accuracy of the panel positioning by the radius, angle, azimuth by 6, 4, 2 times, respectively, to reduce the backlash by 2-4 times, to shorten the panel setting time by 8-10 times, to achieve the repeatability of panel setting within 20 microns. ... Archive . ...

... Equinox of object coordinates BJ = 18.87 / bJ magnitude UMBJ = -0.69 / u - bJ colour BJMR = 0.22 / bJ - r colour NOBS = 1 / Number of 2dF observations available IS_ BEST = 'TRUE ' / TRUE if this file contains the best 2dF observa DATEBEST= '24/09/00' / Date of best 2dF observation (DD/MM/YY) ID_ BEST = 'QSO ' / ID from best 2dF observation QUALBEST= 11 / Data quality flag from best 2dF observation Z_ ...