Frob enius endomorphisms of linear spaces Alexander E. Guterman My research interests are in ring theory, linear algebra and combinatorics. In particular, I investigate transformations on matrices over different algebraic structures, preserving some matrix properties, sets or invariants. ... I was investigating monotone matrix transformations and developed method of matrix deformations and chain method in order to classify monotone linear and additive transformations on matrices. ...

... CBET now has an M31 novae page , M33 novae page , and an M81 novae page . ... Also, see W. Pietsch's M31 (apparent) optical nova catalogue , M33 novae catalog , and M81 novae catalog Please note that I do not keep track of galactic novae . Nova M81 2016-04a? (= PNV J09560598+6900401 ), ATEL 8904 discovered 2016/04/02.876 by Kamil Hornoch and H. Kucakova . ... Nova M31 2016-03a? (= PNV J00421695+4059098 ), CBAT TOCP discovered 2016/03/01.721 by unknown . ... other extragalactic Novae from 2016 . ...

... development and tests of instrument control sequences; . ... measurement and checks of electrical interfaces; . ... standard TCP/IP link from PC to electrical interface unit; . ... galvanic insulation of interfaces; . modular structure of the interface unit with set of modules for standard space OBDH interfaces: MIL-1553, LVDS, RS232/422/485, UKS, etc.; . ... relay command simulator IRKON (160 duplicated commands); . ... Ilya Chulkov, Head of laboratory +7(495)333-45-23, ilya@hea.iki.rssi.ru . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Phoenix mission extended . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... In spite of the good potential possibilities, some of the station "Dnepr" design characteristics did not allow us to apply the usual special IS radar measurement methods. ... Thus for IS signal measurements at the "Dnepr" station, we have developed special methods for recording and processing IS signals in order to determine plasma ionospheric parameters. ... Equations (4-5) from the basis for data post processing to obtain ionosphere parameters. ...

... Iowa Robotic Telescope | ... Talon is based on OCAAS, a software suite developed by software engineer Elwood Downey ( Clear Sky Institute ) for use at the University of Iowa ?s first remote facility (the ATF, or Automated Telescope Facility). ... XObservatory : Telescope Control Interface . ... This program calls upon and coordinates much of the interrelated portions of the Talon architecture, and forms the primary control panel for the telescope, dome, and peripheral systems when used locally. ...

... the total number of numbered minor planets is 350441 ; . the total number of named minor planets is 17621 ; . the unnamed minor planet with the least number: (3708) 1974 FV1 ; . the named minor planet with the greatest number: (340980) Bad Vilbel ; . the total number of minor planet names containing symbols with diacritical characters is 839 ; . ... the first minor planet named using a symbol with diacritical character is (61) Dana?. ... Symbol . ... Minor planet names ...

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. ...

Next: RSOG Pre-Observation Products . ... Mission Elements . ... The main mission elements (ME) are: . The RSOG, based at ASC, which is responsible for the science operation of the RadioAstron Mission. ... The Main Ballistic(Navigation) Center (MBC) belonging to Lavochkin Association coordinates preparation and exchange of orbit determination and orbit reconstraction ptoducts. ... Experiment codes of five characters are used in naming GRT related files. ... RSOG . ... Corr (GTS?) ... Corr (RSOG?) ...

... The question is, how to get a machine with one network interface to respond to more than one IP addresses. ... changes (most likely only in the includes). ---------------------netinet/if_vif.h-------------------------------------- typedef struct { struct ifnet vif_if; struct ifnet *vif_sif; /* slave interface */ int vif_flags; } vif_softc_t; #define VIFMTU (1024+512) --------------------------------------------------------------------------- ...

General Information . ... The conference is organized by the Sternberg Astronomical Institute (SAI) of Moscow University and the IAU Working group "Site-testing Instruments" . ... Use of site data in telescope operation and adaptive optics. ... Recent conferences on this subject (2007, 2008) demonstrated great interest of the community, hence the need for a new meeting. ... Unlike previous recent conferences, this meeting will cover all aspects of site monitoring for optical/IR astronomy. ...

Learning Astronomy Through Storytelling . That children at different stages of development will derive different meanings from the same story is obvious but worth mentioning. ... If you teach K-2, the central message of the story that you want students to understand is simply that the Moon's shape, as they see it in the sky, varies. ... Children learn that a story has a plot, a setting, characters, a main problem, a crisis point, and a solution. ...

... IN SCIENCE HARDWARE SUPPLY TO MIR ORBITAL COMPLEX . In essence, the Mir manned station not only concentrated the experience of solving various applied tasks in orbital flight conditions but also extended the sphere of applying scientific methods in space, that had been beyond the reach of Mankind before. ... INTERNATIONAL SPACE STATION | SEA LAUNCH . LAND LAUNCH | UNIVERSAL SPACE PLATFORM | ... LAUNCHERS | ... Official WEB-site of S.P.Korolev RSC Energia . ...

Launch of Explorer 1 . Click here for a full size version of this image. ... The USSR was first, sending off its first "Sputnik" ("satellite") on October 4, followed by Sputnik II on November 3. ... News conference following the launch of Explorer 1 . ... Unlike the orbits of the Sputniks, that of Explorer 1 was quite elliptical and it rose to an altitude of about 2500 kilometers. ... Explorer 2 failed to orbit, but Explorer 3, launched March 26, was successful, and it did carry a tape recorder. ...

... Поход в Турцию, 29 октября - 8 ноября 2015 . Поход в Армению, 14 - 29 августа 2015 . Поход в окрестности Нижнего Новгорода, 30 апреля - 4 мая 2015 . ... Поход в Крым, 12-21 октября 2012 года . Поход на Кавказ, 18 июля - 1 августа 2012 года . Поход в Белоруссию, 27 апреля-3 мая 2012 года . Лыжный поход в Ловозерские тундры (Кольский полуостров), 7-18 марта 2012 года . Лыжный поход на Белое море, 1-9 января 2012 года . Поход в Крым, 14-23 октября 2011 года . ...