... Многогранники называются остроугольными, если все их двугранные углы являются острыми или прямыми. Одним из существенных стимулов для их изучения является то, что частным случаем остроугольных многогранников являются многогранники Кокстера, возникающие в теории групп отражений. Как описать все остроугольные многогранники? Если наложить на двугранные углы более сильное условие - быть острыми, то все такие многогранники (в трехмерном евклидовом пространстве) являются тетраэдрами. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... ISS Russian Segment . ... Consolidated study of the ISS dynamic characteristics; parameters defining a space position of scientific devices and attitude sensors with respect to the station hull deformation; parameters of magnetic and microgravity disturbances on board the station. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

Abstract -- Calculations are performed for the linear polarization of starlight due to extinction by aligned dust grains when the starlight traverses a medium with irregular magnetic fields. This medium is intended to represent the optically thick components of interstellar clouds which are observed to make little, if any, contribution to the polarization of starlight. ...

polimodel -- Produce model linear polarization and position angle images . ... Whether to apply random errors to output polarization and position angle values. seed = "" [integer] . ... This task produces a model linear polarization image and corresponding position angle image from an input image assumed to represent intensity (Stokes I parameter). ... A threshold for the input image can be defined such that polarization and position angle are not computed for input values less than this threshold. ...

... Wang, Y. M.; Ye, P. Z.; Wang, S.; Zhou, G. P.; Wang, J. X. A statistical study on the geoeffectiveness of Earth-directed coronal mass ejections from March 1997 to December 2000, // J. Geophys. Res. ... Gosling J. T. , The solar flare myth// J.Geophys.Res., ... Lindsay G.M., Luhmann J.G., Russell C.T., Gosling J.T. Relationship between coronal mass ejection speeds from coronagraph images and interplanetary characteristics of associated interplanetary coronal mass ejections// J.Geophys.Res. ...

Full-Text Search . ... astro-ph . ... SAI VO . Search sort results by Date Relevance . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . Normalized to: Angle, J. 9 article(s) in total . 46 co-authors, from 1 to 9 common article(s). ... Aprile, E.. Arneodo, F.. ... Dahl, C. E.. ... SAI MSU . ...

... DIAGNOSTICS OF IONOSPHERIC IRREGULARITY SPECTRUM USING MEASUREMENTS OF RADIO WAVE ANOMALOUS ATTENUATION UNDER VERTICAL SOUNDING . ... The selected experimental data are characterized by a high average level of attenuation of a signal of vertical sounding (10 dB and above), which cannot be caused by collisional absorption of radio waves (practically absent in a dark time of day) and, hence, being a consequence of scattering on random irregularities. ... ATTENUATION OF A VERTICAL SOUNDING SIGNAL . ...

include graphics.h #include math.h #include conio.h const double l=10000000; const float V0=5000; const float angle =0.5; const float dt=500; const double G=6.67e-11; const double M=5.98e24; double E; float p; float F; float b; float b_angle ; float S; float x1; float y1; float r; float Vi; int xC; long ...

... part 2 | ... Part 1 . The new concept of formation and development of the Solar system. ... Thus, the initial pulse of the rotation of a protosolar cloud of the solar system was determined as a result of the diversion of a part of the moment of the rotational pulse of the Galaxy. ... Besides this new approach to the pre-solar system as a system of the destroyed vortex structure, we can understand now a number of other peculiarities of the Solar system's structure. ...

The potential of plasma By Lisa Tidwell Astronaut Franklin Chang-Diaz, Director of the Advanced Space Propulsion Laboratory, works on the VASIMR engine. jsc2003e49523 Photo by James Blair Scott Winter, from Safety, Reliability & Quality Assurance, makes adjustments on the VASIMR. jsc2003e49525 Photo by James Blair A T A GLANCE HOW THE V ASIMR ENGINE WORKS The VASIMR engine works through a set of three linked magnetic cells. ... This plasma is what drives the rocket engine. ...

... LASCO , Консорциум СОХО , Военно-морская исследовательская лаборатория , Европейское космическое агентство , НАСА . Пояснение: Солнце уничтожило эту комету. ... LASCO) на борту космического аппарата СОХО 23 декабря 1996 года. ... Ему уже удалось открыть более 1500 комет , включая многочисленные кометы, касающиеся Солнца . ... Великая комета 1965 года (комета Икейя-Секи) также принадлежала к этому семейству , она прошла на расстоянии около 650 тысяч километров от поверхности Солнца. ... Сатурн . ...

Main News Phones Research area Brief history Institute Structure Experimental Base Observational data English/Russian . ... 677980 Yakutsk, Russia . ... 7(4112)390400 . Fax: . ... Magnetic Observatory . ... the Yakutsk magnetic observatory is located at a distance of 9-10 km to the south from Yakutsk . ... absolute and variation measurements of the Earth?s magnetic field . ... facilities for absolute measurement of the geomagnetic field i.e. the proton magnetometer, the QHM-magnetometer . ...

... Head of the seminar: Prof. B.V. Somov, . ... The seminar considers the questions related to generation of magnetic fields in astrophysical plasmas, effect of the magnetic reconnection and particle acceleration in strong magnetic fields, the origin and propagation of cosmic rays, the flares and other non-stationary phenomena in the solar atmosphere and solar wind, Sun Earth connections and physical processes in the heliosphere. ... On the Topological Models and Topological Trigger of the Solar Flares...

The low aspect ratio, or spherical tokamak Globus-M [1] has recently been built in a support of international spherical tokamak plasma investigation program. ... The survey to determine the work scope in diagnostic design for Globus-M is given in the paper. ... The next one is an advanced diagnostic set intended to supply the data on basic plasma parameters: electron temperature and density profiles, ion temperature, plasma composition, radiation profile, Zeffective. ... Magnetic Diagnostics. ...