... Proof of the Dulac's conjecture: Polynomial vector field in the real plane has but a finite number of limit cycles. The proof of this short statement requires a book [44] published by AMS in 1991; it was the subject of the talk in the ICM-1990. ... The proof of the same conjecture given by Ecalle and based on the ideas of the four authors appeared in a book published in 1992. ... Generation of limit cycles under perturbation of planar Hamiltonian systems. ...

... Protective equipment: . ... Product: . ... Employers should use this information only as a supplement to other information gathered by them, and should make independent judgement of suitability of this information to ensure proper use and protect the health and safety of employees. This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user. ...

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... Capability of space means for the solution of problems of military character . ... Classification and functions of space systems of military purpose(assignment) . ... Ground complex of maintenance of launch and control of space vehicles . ... Capability of space systems of optical reconnaissance . ... Complexes topographical and earthresource shooting on base of "Zenit" space vehicle . ... Space vehicle for optical-electronic reconnaissance . ... System with space vehicle on low-altitude orbits . ...

... Na - number of occulting satellite 2. Np - number of occulted satellite 3. ... Y(0) - difference of the planetocentric rectangular coordinates ( occulting satellite minus occulteded one) in the event plane ( see reference ), km 12. ax - the coefficient required for application of the coordinates X(0), Y(0) ( see reference ) 13. ay - the coefficient required for application of the coordinates X(0), Y(0) ( see reference ) 14. bx - the coefficient required for ...

... PUL VLBI Analysis Center . ... Pulkovo EOP and Reference Systems Analysis Center (PERSAC) is located at the Pulkovo Observatory . ... Processing of VLBI , GPS, and optical observations aimed at analysis of the Earth rotation, station displacement, and celestial reference system. ... Celestial Pole Offset (CPO) and Free Core Nutation (FCN) . Four daily updated CPO and FCN series (models) are provided. ... File fcn1.dat contains the ZM1 FCN model with variable amplitude and phase. ...

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... Artist's rendering of solar sail. One such method is the use of a solar sail , relying on the pressure of sunlight. ... When the sail faces the Sun squarely, the pressure of sunlight counteracts the Sun's pull and only enables the satellite to circle the Sun in a slightly larger orbit. ... The starship is propelled by a huge solar sail, pushed by tight beams of light from lasers which are powered by sunlight and orbit the Sun. ... The solar sail home page . ...

... These trajectories have an initial flight from the Earth to a large distance (of about 1.5 million km), the following passive flight to the Moon's orbit, an approach to the Moon with a decrease of an energy of a particle (spacecraft) selenocentric motion to a negative value and the temporary capture in an elliptic orbit of the Moon's satellite. ... Several trajectories of this type are determined. ... Ivashkin V. V. On optimal trajectories of space flight to the Moon in the Earth--Moon--Sun system. ...

Star Formation in Extremely Faint Local Volume Dwarf Galaxies Sambit Roychowdhury with Jayaram N. Chengalur Ayesha Begum, Univ of W-Madison Igor D. Karachentsev, SAO, Russia September 14 , 2009 Faint Irregular Galaxy GMRT Survey (FIGGS) · Galaxies identified using the selection criteria: MB -14.5, HI Flux 1 Jy km s-1, Dopt 1', -40 · By far the largest study of HI in dwarf galaxies · Total of 62 ...

... We have used a Prolog-to-Java translator for efficient implementation of logical inference on video scenes. The problem of creation of special built-in classes of the Actor Prolog concurrent logic language for the low-level video processing is discussed. for the real time video processing. ... We use the Actor Prolog concurrent logic programming language [8-14] for implementation of the logical inference on video scenes. ... An example of abrupt motion recognition is shown on the Fig. ...

. This is a new popup window - close it when you are done . Submitted by Paul Valleli on 06/16/2008 13:06:34 . Equipment Bay Extension . Existing pier was offset by 2 ft. in concrete pad so dome also had to be offset. This required an offset to the roof structure to center the dome on the pier. The extra space will be used for computer equipment and automation gear. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... Я попытался выделить самые интересные сюжеты, в основном связанные с наблюдательной астрономией и появившиеся в Архиве препринтов в 2006 г. Большинство из этих работ описывались в моих обзорах и было включено в число "лучших из лучших" . ... Непопадание в список каких-то важных работ связано в основном с тем, что "на лету" трудно определить важность статьи вне своей области интересов, кроме того этот год выдался для меня непростым.. ... Authors: Jason W.T. Hessels et al. Статья в Обзорах . ...

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RadioAstron AO-1 prop osal Submission dead line: February 8, 23:59 UT. ... Team contact name and e-mail address: Ivan Petrov (e-mail: Ivan.Peterov@gmail.com ) Total observing time request: 100 hrs Number of independent observing segments and typical range of pro jected baselines required: 20 (3-30 Earth diameters) Specific dates and time intervals requested : If your experiment requires specific dates and UT ranges, please, indicate them: February 1, 2014: 08:00-16:00 UT -- M87 imaging ...

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

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Introduction 1 Observatory Control and Astronomical Analysis System. ... OCAAS is a complete UNIX software package for the local and remote operation of an astronomical observatory. ... It controls all aspects of the telescope mount, CCD camera, filter wheel, focuser, weather instrumentation, power supply, GPS receiver, internet or phone line communications, dome and shutter hardware. ... 1.2 Main Control Features. ... OCAAS can perform an automatic focus procedure at any time under operator control. ...