Complexity and Simplicity of Optimization Problems Yurii Nesterov, CORE/INMA (UCL) September 4, 2012 (Moscow) Developments in Computer Sciences Age of Revolutions: Revolution of Personal Computers: 1980 ­ 2000. ... Genealogy Mathematics Engineering Computational Mathematics .. ... We have already enough troubles with problems formed by the simplest functions. ... Assume that in our problem class P : Complexity of the problems is an increasing unbounded function of the data size. ... Google problem. ...

Computer Ephemeris for 2014 from DE200/LE200. ... Sidereal Time. ... Apparent equatorial positions. Ecliptical positions. ... Chebyshev polinomial approximation of positions. ... Position and velocity. ... Dynamical time. Sidereal time. ... Osculating elements of planetary orbits. Planetary configurations (by time). ... Fundamental ephemeris. ... Ephemeris for physical observations. ... Stars. ... All comments on Computer Ephemeris please direct to the author: charlie@mail.univ.kiev.ua ...

1000 of these sources, however, remains a mystery; these are the so-called unassociated gamma-ray sources, with no known astrophysical counterpart at any other wavelength. While many LAT unassociated sources likely belong to known classes of objects (e.g. pulsars), a more exotic origin for some of these sources is also possible (e.g. dark matter annihilation). ... These results will aid further studies and follow-up observations of LAT unassociated sources. ...

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...

... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . AAA Winter Astronomy Class: Measuring Distances in Space тАУ Dec 2015 тАУ Feb 2016 . ... This Month's Sky . ... This Month's Sky - 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Основатель бренда Cavalli CLASS Роберто Кавалли известен во всем мире как непревзойденный дизайнер, творящий чудеса с материалами и формами, и дерзкий экспериментатор. ... Тип: Клатчи . ... Клатчи . ... Пол: Жен. ' title='Gmundner Keramik Gr?ner Rand Блюдце для чашки эспрессо 11 см - Gmundner Keramik' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . ...

... This chapter documents the Java classes used for LiveConnect, along with their constructors and methods. It is an alphabetical reference for the classes that allow a Java object to access JavaScript code. ... Full entries for each class appear in alphabetical order. Tables included in the description of each class summarize the constructors and methods of the class. Full entries for the constructors and methods of a class appear in alphabetical order after the entry for the class. ...

... Subscriber Extras . ... Ask Astro . Web Extras . ... Behemoth black hole found in an unlikely place . ... black holes . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Ask Astro web extra: Will all white dwarfs, regardless of the class of star that produced them, eventually become black dwarfs? ... Get instant access to subscriber content on Astronomy.com! ... Receive full access to our Ask Astro answers . BONUS web extras not included in the magazine . ...

... The Hershel Space Observatory - the golden age of space-based IR astronomy continues: Monday 19 October . ... Astronomy Ireland have designed and developed astronomy Evening Classes for the general public. Aimed at beginners, the classes are running in 10 locations nationwide. ... If you sign up now you will avail of the current special offer for International Year of Astronomy (IYA) and get 3 months membership FREE . ... International Year of Astronomy, Ireland National Node . ...

... Classification models A classification model (CM) consists of the following components: Class definitions are given by means of a learning sample, implicitly including the number N and names of the defined classes. ... Optimal loss factors In case of classification aim (3) a set of three optimal loss factors -- weights for di#erent kinds of misclassifications -- has to be stated (Christlieb et al. 1998). ... The classification of spectra of unknown classes can then be carried out under MIDAS. ...

... There is also a hall, where all our reunions are held. ... On the second floor you'll find the classes of handicraft, Maths, Geographie and two computer classes, equiped with the Pentium computers. On the third floor you'll see the classes of literature, history and foreign languages. ... Besides, there you'll see the classes of chemistry,physics, foreign languages and biology. ... It was decorated and the new equipment was bought, such as TV-sets, equipment for chemistry and physics classes etc. ...

... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...

... Астрософт (Модератор: tlgleonid ) > . PixInsight Core / PixInsight Class Library (PCL) . ... Астрософт . ... Оффлайн . ... Благодарностей: 0 . ... Записан . ... Благодарностей: 251 . Ответ #1 : 01 Июль 2009, 11:45:29 ? ... http://pixinsight.com/purchase/index.html . ... Там есть free LE версия http://pixinsight.com/download/LE/index.html . А PCL это вообще-то инструментарий для волонтеров-разработчиков. ... Ответ #3 : 20 Ноябрь 2010, 16:49:38 ? ... Ответ #4 : 17 Сентябрь 2011, 18:46:23 ? ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... Credit Copyright: NASA / Goddard / SDO AIA Team Explanation: On Valentine's Day (ET) the Sun unleased one of its most powerful explosions, an X-class flare . ... This X-class flare was also accompanied by a coronal mass ejection (CME), a massive cloud of charged particles traveling outward at nearly 900 kilometers per second . ... Publications with keywords: Sun - solar flare - coronal mass ejection - ultraviolet . Publications with words: Sun - solar flare - coronal mass ejection - ultraviolet . ...

... There is an opportunity to perform O-C calculations for objects which are absent in the data base of the package. Such objects can be described by orbital elements or by initial coordinates and velocities. ... On pressing Edit file button user has a possibility to look through the list of object elements or their coordinates and velocities to add or to change it. ... For example, the designations of objects in the list can occupy the last position in each line. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... MeadeтАЩs remarkable LX600 f/8 ACF with StarLock technology takes a giant leap forward by making astro-imaging much easier and making setup and transportation a breeze. ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... StarNavigator Series . ... Coronado Accessories . ...

... A language centre has helped move a group of Russian academics a step closer to realising their ambition of studying for a prestigious research degree in the UK. The scholars from Samara State Aerospace University lacked the English language skills needed to study at Glynd?r University for a PhD, one of the highest academic qualifications. ... This has seen Glynd?r University Professor Richard Day, Professor of Composites, visit Russia to deliver guest lectures to students at Samara. ...

A Simple Way to Estimate the Soft X-ray Class of Far-Side . Solar Flares Observed with STEREO/EUVI . ... Figure 1. The STEREO/EUVI 195 °A B-streaks typical of C-, M-, and X-class flares. Table 1: A list of flares registered both with GOES and STEREO/EUVI . ... Impulsive GOES M-class flares and their thin, single, long B-streaks. ... STEREO/EUVI B-streak and the peak of the SXR flux measured by GOES. ... A list of major far-side flares detected from B-streaks in STEREO/EUVI 195 °A images. ...

Next: Amorphous magnesium silicate Up: Examples of data contained Previous: Examples of data contained . ... We have used the infrared optical constants of forsterite contained in the database for calculating the absorption cross sections of spherical and non-spherical particles in the Rayleigh limit (see Fig. The spectra are obtained by averaging the cross sections calculated for the three different crystallographic directions. ...