... Повторно доказываемые подцели и есть "логические акторы". ... Логическая программа состоит из подцелей, которые надо доказать в ходе ее исполнения (точно так же как обычная программа состоит из операторов, которые надо исполнить). ... И, во-вторых, в логических языках есть так называемый откат ("бэктрэкинг"). ... Таким образом, лист бумаги, испорченный при печати - это не что иное как логический актор, откат которого никогда уже не произойдет, и доказательство которого так и не будет отменено. ...

... Gzipped postscript, may be viewed directly by some versions of Ghostview (121K) . Zipped postscript (121K) ] . Postscript (79K) | Zipped postscript (27K) ] . ... Классификация интегральных многообразий . ... Для понимания курса достаточно знакомства с геометрией гладких многообразий. ...

... Сегодня: 10 апреля 2016 г. Новые исследования, проведенные сотрудниками Гарвард-Смитсоновского Центра астрофизики, показали, что около 60 млрд звезд нашей галактики Млечный Путь можно отнести к классу одиночных красных карликов. ... Они были получены, исходя из того, что около 80% звезд Млечного Пути - это красные карлики массой от одной десятой до половины массы нашего Солнца. ... Так что около 20 млрд красных карликов входят в двойные звездные системы, а 60 млрд - это одиночки. ...

... Физические основы строения и эволюции звезд ... слоя 1.1 При этом используем тот факт, что по симметрии может быть направлено только по радиусу. ... Напомним, что мы имеем дело с заданным химическим составом, таким, что при высокой температуре идут ядерные реакции с выделением энергии.. ... Публикации с ключевыми словами: Эволюция звезд - внутреннее строение звезд - термоядерные реакции - физические процессы . ... Туманность Кошачий глаз: переобработка данных космического телескопа . ...

This site offers information about the International Astronomy Olympiad (IAO), one of the six First International Science Olympiads (like International Olympiads on Mathematics, Physics, Chemistry, Informatics and Biology). It contains the Organization Rules of the IAO which are officially accepted by all participating states and ratified by the leading body of the IAO - the Euro-Asian Astronomical Society. The Rules have to be strictly followed by all participants. ... Update 31-Aug-2004 . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Posts tagged ?introduction? ... While creating my own arXiv as follows, I had a hope to write up short introductions of statistics that are unlikely known to most of astronomers (like my MADS) and matching subjects/targets in astronomy. ... Continue reading ?arxiv list? ... I?ve heard many times about the lack of documentation of this extensive data analysis system, ciao . ... Although ciao is not the only tool for Chandra data analysis, it was specifically designed for it. ... Chandra Blog . ...

. Next: About CHAMELEON Up: CHAMELEON Previous: CHAMELEON Contents . Subsections . About CHAMELEON . Data and auxilliary files . Pipeline . Introduction and command syntax . Output files . Flag tables . Bias correction . Phase unwrapping . Logging and quality control . Christian Hummel 2015-04-28

... Introduction | ... Tail Probe is a spin-stabilized spacecraft spinning around the main axis of the maximum moment of inertia. ... To know the spacecraft attitude for a given time we use a matrix N to transform any vector V from the Geocentric Solar-Ecliptic ( GSE ) coordinate system to the Spacecraft Construction ( S/C ) coordinate system . ... X S axis is the spacecraft struclural axis which is close to the spin axis and to the main axis of the maximum moment of inertia X m , . ...

... Ireland and the Moon Landings - Some Personal Reminiscences - Thursday 14 May 2009, Dublin City Library . ... Fascinating Astronomy Images on Display in The Market Place, Armagh . Introduction to Amateur Astronomy in Ireland - a lecture given by Deirdre Kelleghan on May 12th 2009 at Ballymun Library at 6:30 pm . Ballymun Library, Main St., Ballymun, Dublin 1 . ... International Year of Astronomy, Ireland National Node . ...

... After 1958, when scientific satellites began exploring the Earth magnetic environment, many puzzling phenomena could be directly examined, especially the polar aurora and disturbances of the Earth's magnetic field [see Stern , 1989a]. ... The large-scale structure of the magnetosphere, the space region dominated by the Earth's magnetic field, was gradually revealed within the next decade: its trapped particles, its boundary, and its long magnetic tail on the night side. ... Introduction . ...

Experiment COLD . ... JSEC Astronomy . ... The entire project was called "Experiment Cold". ... The best radiometer (in terms of fluctuation sensitivity) known to us, based on a parametric amplifier with a closed-cycle helium cooling system, was used in the experiment; measures were taken to "cool" the radio telescope itself; and a method of controlling the numerous sources of interference was carefully thought out. ...

... Asteroid Introduction (This Page) . ... Asteroid Summary . Asteroids . Gaspra , Ida & Dactyl , Toutatis , Castalia , Vesta , Geographos, Mathilde . ... NEAR Spacecraft Homepage . Near-Earth Asteroid 3753 - Earth's Curious Companion . ... Then on October 1991 asteroid 951 Gaspra was visited by the Galileo spacecraft and became the first asteroid to have hi-resolution images taken of it. ... Both Gaspra and Ida are classified as S-type asteroids composed of metal-rich silicates. ... Gaspra . ...

Next: Historical Notes Up: The Chirplet Transform: Previous: The Chirplet Transform: . ... One of these TF methods, the short-time Fourier transform (STFT), has been used extensively for analyzing speech, music, and other non-stationary signals. ... Another time-frequency representation (which might more appropriately be called a time-scale representation) is the well-known wavelet transformheil-walnut,mallat:theory,daubechies:transform,strangwavelets. ... Historical Notes . ...

... title=' Золотое кольцо 01K613066Z - Ювелирное изделие - Ювелирное изделие' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Кольцо. ... The aim of this book is to add certain new topics to the material of the famous textbook "Statistical physics" by L.D.Landau and E.M.Lifshitz. ... Артикул: PICT53_RED RED Цвет: красный Состав: 100% шелк Параметры изделия: длина 158 см, ширина 9 см Страна дизайна: Италия Страна производства: Италия . ...

Subject of Astronomy. ... Celestial Sphere. ... Spherical Frames of Reference: Horisontal and Equatorial Coordinates, Ecliptical System. ... Transformation of Celestial Coordinates. ... Change of Object Coordinates as a Result of Diurnal Rotation of Celestial Sphere. Phenomenons, Which Lead to Celestial Coordinates Change. ... Motion of Equator, Ecliptic, and Their Poles. ... Diurnal Solar Motion on Different Latitudes. ... Time Equation. ... Apparent Motions and Configuration of Planets. ...

Next: The Plan Up: No Title Previous: No Title . On the afternoon of 19 October 1999, it was discovered by John Briggs that the secondary mirror in the 2.5m SDSS telescope had developed a series of circular cracks around its axis of symmetry. As the telescope had not been in use since the early morning of 16 October 1999, there was a great deal of concern and consternation as to what caused these fractures in the glass. ... 11/24/1999 ...

Next: Electronic database Up: A Database of Optical Previous: A Database of Optical . ... Many new observational data have been measured in the last years, e.g. by the Infrared Space Observatory in 1995-1998, and interpretation of these spectroscopic data is still in progress. This requires the comparison with data of ``analog materials'' delivered by spectroscopical laboratories. Various terrestrial analogs of cosmic solids have been studied in chemical and physical laboratories. ...

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... INTRODUCTION . ... Based on their personal beliefs, they find fault not only with biological evolution, but also with modern astronomical ideas about the age, expansion, and evolution of the universe. ... An Ancient Universe - Table of Contents . ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

... In the USA it was called space Shuttle system. ... NPO MOLNIYA was founded on the basis of two design bureaus: BUREVESTNIK (Chief Designer A. V. Potopalov) that had experience in the creation of heavy supersonic aircraft and anti-aircraft missiles and MOLNIYA (Chief Designer M. R. Bisnovat) which developed unmanned flight vehicles and an Experimental Machine-Building Plant (General Designer V. M. Myasischev) where heavy and high altitude aircraft were designed and tested. ... Buran Orbiter . ...