... SAONet user rules (in Russian) . ... Main conference hall . Informatics Laboratory conference hall . Internal information and services (local access) . ... N.Arkhyz ( temperature , forecast ) . BTA ( temperature , wind , forecast ) . ... Cloudiness over South of European Russia . ... Astronomical software resourses . ... Space Telescope Electronic Information Service . ... Electronic access to journals . Electronic Journals Service (EJS) . Russian scientific electronic library . ...

NAME dbmmanage - Create and update user authentication files in DBM format SYNOPSIS dbmmanage filename [ command ] [ username [ encpasswd ] ] DESCRIPTION dbmmanage is used to create and update the DBM format files used to store usernames and password for basic authentica- tion of HTTP users. Resources available from the httpd Apache web server can be restricted to just the users listed in the files created by dbmmanage. ... This manual page only lists the command line arguments. ...

. To link one or more directories to another directory use the command: ln -s directory_name(s) directory_name . The use of the -s option indicates that this is to be a symbolic link. Only the super-user is allowed make hard links between directories. As a user you are restricted to creating symbolic links between directories using the -s option. Examples . Did You Know? .

. Microwave Chains . The majority of the modified Nobeyama radio heliograms corresponds to the restricted range of the brightness temperature of Tb~5000-20000 K. On the negative Nobeyama radio heliograms, the white (i.e. absorption) features are radio filaments. October 30-31, 1992 . May 10-15, 1993 . November 1-4, 1993 . August 20-September 02, 1998 . Back to the parent page . Last update: 2 April 1999 . 

. < Previous Figure < Main Page < Next Figure . The same as in Fig. 1. An analysis of the spectral range near the core of H_alpha is restricted to rapidly rotating stars. In other cases this range was deleted from the spectra. < Download average spectrum of o Per . < Download average spectrum of reddened stars . < Previous Figure < Main Page < Next Figure .

. APO Weather Status . Current APO Weather Information . Observing Calendars . Observing Schedules (TBD) . Night Log Form (web form) or (text template) . Archived Night Logs (TBD) . User's Mail Servers . Telescope Closure Policy . IAU Circulars (TBD - restricted to APO) . Catalog of UV and Optical Standards (TBD) . Coming to the Site . Staff Directory . Current Sky Calendar .

250$ - Moscow Session (21-26 may) . 200$ - St.-Petersburg Session (27-30 may) . 400$ - both In Moscow (20-26 may): . RAS Resthouse "Uzkoe" - $50/day (3 time meals included) . In St.-Petersburg (26-30 may): . Circus Artists" Hotel, sharing double apartment (without meals) - $40/night. University Hotel single (no meals) - $45/night. ... Financial support Some restricted financial support is available. ...

... The classical Beltrami theorem says that any metric whose geodesics are straight lines has constant curvature. But what can we say about geometries whose geodesics are circles (to be more precise --- parts of circles; by a circle we always mean a circle or a line)? ... We prove that a rectifiable simple bundle of circles containing sufficiently many circles in general position is the image of a bundle of lines under some left or right quaternionic fractional transformation. ...

... We investigate the use of the Kohonen self­organizing feature map (SOFM) method for simultaneous clustering and dimensionality­reduction. ... 1992; Murtagh & Hern'andez­Pajares 1994; Hern'andez­Pajares et al. 1994): each item in a multi­ dimensional input data set is assigned to a cluster center; the cluster centers are themselves ordered by their proximities; and the cluster centers are arranged in some specific output representational structure, often a regularly­spaced grid. ... 1994). ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Chirp ionosonde main technical characteristics . ... Linear frequency modulated continuous signals sounding method is relatively simple and has wide application in various special-purpose systems. ... Chirp signals which are applying for ionosphere channel diagnostics usually have10KHz/s -- 1MHz/s. We must point out that under modulation speed increasing there is an increase in noise suppression and resolution power. ...

Rocket R-1 . ... Launch mass, kg . ... On April 14 1948 the Government Decree has been enacted on the development of the first rocket to be made of domestic materials and derived from missile A-4 (FAU-2). The rocket was designated as R-1 including its ground support equipment. ... Launch site . ... During pre-launch processing of rocket R-1, the processing operations and equipment were little different from those used to process rocket A-4. ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Observing . ... Astronomy for Kids . ... Astronomy enthusiasts fear losing access to Mauna Kea permanently . ... Night-sky lovers are worried that new rules aimed at protestors opposing construction of the Thirty Meter Telescope will permanently ban the public from visiting Mauna Kea at night. ... The group said it too feared the new rule would effectively bring an end to photographing Mauna Kea s starry skies. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... LOGIC OBJECT-ORIENTED PROGRAMMING IN . THE WORLD WIDE WEB . ... The idea of Internet/Web logic programming is based on the application of logic languages (Prolog and its modern descendants) that are very useful tools for representation, search and analysis of information because of their mathematical basis and ideology. ... Damiani E., Tanca L. WG-LOG: A Graph-Oriented Language for the World Wide Web // Proc. of the 2 nd Int. Workshop on Logic Programming Tools for Internet Applications. ...

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... Representing Coordinate Systems (Frames) While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... A Plot's base Frame corresponds with the native coordinates of the underlying graphics system. Plotting operations are specified, using AST Plot methods, in physical coordinates which correspond with the Plot's current Frame (typically this might be a celestial coordinate system). ...

... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... Each such choice is known as a frame of reference . Some possible frames are -- the interior of the airliner, . ...

RTT150 . ... The primary mirror 1 reflects light to the secondary mirror 2 which sends the converging beam of light to the system of four flat mirrors 3, 4, 5 and 6. That allows the beam of light to leave the telescope strictly along its polar axis and be collected in Coude focus. ... That's why at any tube position (for any rotation along the declination axis) beam of light parallel to the principal axis after reflection on mirror 3 follows the direction of declination axis. ...

... Publication Originality and Plagiarism The PASP and ASPCS publication agreements warrant that authored manuscripts are original and previously unpublished. ... Peer Review, Confidentiality, and Conflicts of Interest Reviews of all PASP manuscripts are strictly confidential and all reviewers are anonymous. ... Authors are expected to follow the recommendations of reviewers and editors to correct and augment their manuscript citations when requested to do so. ...

... 3 ­ Sternberg State Astronomical Institute, Moscow, :jeanna@sai.msu.ru The graphic method of the analysis of an arrangement of linear structural elements on geographical and geological maps of continents (A.V.Dolitsky, [1]) has allowed to find out global stress fields of the past and among them one which directions (the main normal and maximal tangents) describe more than 80 % of all linear elements of a relief. ... The found poles share program way on density of an arrangement on 3-4 groups. ...

... the radiative transfer equation (RTE) for the randomly-irregular magnetized plasma has been derived on the base of general grounds of the multiple scattering theory . ... Solutions of several absolute tasks of the scattering theory have been obtained (on the optical depth of the ionospheric plasma layer, on the value of radio wave anomalous attenuation, on anomalous refraction, on the backscattered signal intensity for the source being placed within a plasma layer). ...