Older methods used a monoalphabetic substitution which required both the encryption and decryption keys to be kept secret because one was trivially derived from the other. ... Where m is the plaintext message, P(m) is the message encrypted with the public key, P, and S(P) is P encrypted with the secret key, S. That is, the secret key, S, decrypts a message encrypted with the public key, P. S cannot be deduced from P . ... You encrypt your signature message with your secret key to obtain S(m). ...

... We report on the preliminary results of experiments using a Bayesian cluster method to cluster objects present in photographic images of the POSS-II. ... We believe that the application of such algorithms to large-scale astronomical sky surveys can aid in cataloging the detected objects, and may even have the potential to discover new categories of objects. ... We have thus started to explore new clustering analysis and unsupervised classification techniques for this task. ...

Running Apache on a heavily loaded web server, one often encounters problems related to the machine and OS configuration. ... Quick and detailed performance tuning hints for BSD-derived systems. ... Depending on the syntactic form of the TZ environment variable, these systems have several different algorithms to determine the local time zone (presumably compatible with something). ... This form delegates the knowledge of the time zone information to an external compiled zoneinfo file ( la BSD). ...

Russian Space Science Internet (RSSI) is a successful result of RSSI Project. ... space oriented organizations; . ... RSSI offers for its members : . ... videoconferences via MBONE Internet protocol (there are 2 tunnels available now through the general IP network: one to NASA Internet, and another to Moscow State University); . ... It is designed so that all organizations connected to the RSSI gain access to the resources of Russian computer networks as well as world wide Internet. ... nic@rssi.ru ...

SET OF MAGNETIC AND ELECTRIC FIELD DETECTORS EXO-EM . ... 3 components measurements of both magnetic and electric fields; . ... wide frequency range (0 - 10000) Hz; . ... ECHO-EM is intended for measurement of a complete vector and three components of both electric and magnetic fields, and transfers the received data to the block of the processing of the information and also in telemetry. ... digital 0.1-20 Hz; . ... frequency band (0.01- 10000) Hz; . ... digital (500 - 1000) Hz; . ...

... A new technological vision on the future of the VLBI backend area let envision a fully digital implementation of what was until now performed in the analog domain. ... Very Long Baseline Interferometry (VLBI), radio astronomy, VLBI backend systems, VLBI backend area, domains transition point, radio observatories digital technology, data handling process, signal path, RFI and calibration effects, DSP algorithms, sensitivity of the observatories, global applications. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit†йs . des reportages . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le dernier vol d'Endeavour vu de l'espace ! ... Pendant son voyage vers Los Angeles sur le dos d'un Boeing 747 , la navette spatiale Endeavour †йtait espionn†йe... depuis l'espace ! ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

This package contains two libraries of SAS utilities: saslib and sasdal . ... setEmosRejectionMask(TableT table) . ... Directory d("."); . ... class Directory : public list { public: Directory ( const string name = . , const string pattern = * , const bool recurse = false); Directory ( const DirEntry * d, const string pattern = * , const bool recurse = false); void filter( const string pattern); string filter() const ; void recurse( const bool dorecurse); ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... 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. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Support . ... Software & Firmware . ...

. EVENT HOME PAGE. MAGNETIC STORM EVENT. CKA9701.DAT . MOS9701.DAT . CKA9701A.GIF . CKA9701B.GIF . MOS9701A.GIF . MOS9701B.GIF . CKA9701S.GIF . MOS9701S.GIF

AAS Home Page . Caltech Astronomy . NCSA Digital Information System Overview . NMSU Astronomy Home Page . Steward Observatory Home Page . HEASARC/GSFC Home Page . ... University of Hawaii - Institute for Astronomy . Harvard - Smithsonian Center for Astrophysics . ... Section of Astronomy, Astrophysics and Mechanics - Department of Physics - University of Thessaloniki, Greece . ... Department of Astronomy, Cornell University . ... Space Telescope Science Institute Home Page . ...

. Moscow Astronomical Plate Archives: Contents, Digitization, Current and Possible Applications. Light Curves of New Variable Stars Discovered on Scans of Moscow Collection Plates, Field 66 Oph (MDV). MDV catalog - CDS access. Moscow plate collection (Sternberg Astronomical Institute), S.Yu. Shugarov's interactive page. Send questions and comments to N. Samus and S. Antipin .

... Manley Lanier "Sonny" Carter, Jr. ... NASA Astronaut (Deceased) . ... SPECIAL HONORS: Recipient of the Air Medal, Meritorious Service Medal, Navy Achievement Medal, Meritorious Unit Citation, Marine Corps Aviation Association Special Category Award 1982, NASA Meritorious Service Medal 1988, and NASA Space Flight Medal 1989. ... NASA EXPERIENCE: Selected by NASA in May 1984, Carter became an astronaut in June 1985, qualified for assignment as a mission specialist on future Space Shuttle flight crews....

Warren Rupp Observatory and the Richland Astronomical Society loves it when our members have talents! In the case of Steve Carter, he's more than just a great observer and outreach worker.. He does astrophotography, too! ... Warren Rupp Observatory is proud to be associated with these fine groups and endorse these resources.. ... The WRO/RAS was designed and donated by Tammy Plotner - Copyright 2008-2010; Original Content - Tammy Plotner - Copyright 2008-2010; All rights reserved. ...

SPECIALIZED COMPUTER SYSTEMS FOR MATHEMATICAL MODELING OF DISCRETE POINT STRUCTURES READOUT PROCESS Aleksandr Reznik, Andrey Torgov, Aleksandr Soloviev Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences The paper describes the specialized software systems that have been used to solve difficult mathematical problems in digital images processing. ... Systems for the first computers based on FORTRAN. ... Systems based on Matlab special environment. ...

... Upper limits (3 sigma) to any radio flux density were established on the following dates: July 2.01 UT, < 0.585 mJy at 22.460 GHz (wavelength lambda = 1.3 cm); 3.00, < 0.900 mJy at 14.940 GHz (lambda = 2.0 cm) and < 0.189 mJy at 8.460 GHz (lambda = 3.5 cm); 8.968, < 0.291 mJy at 8.460 GHz and < 0.918 mJy at 22.460 GHz; 22.038 < 0.161 mJy at 8.460 GHz and < 0.464 mJy at 22.460 GHz; Aug. 9.00, < 0.129 mJy at 8.460 GHz; 14.837, < 0.187 mJy at 8.460 GHz and < 0.372 mJy at 4.860 GHz (lambda = 6.2 cm). ...

... РОСКОСМОС при технической поддержке партнера юбилейной программы ГАГАРИН. ... С 15 марта по 1 апреля 2016 . ... Корпорация Роскосмос и LifeNews таким образом объявили о конкурсе #ТАКИХберутвкосмонавты в предверии празднования 55-ЛЕТИЯ ПЕРВОГО ПОЛЕТА ЧЕЛОВЕКА ЗА ПРЕДЕЛЫ ЗЕМЛИ. ... Проект запущен . ... Фестиваль реализован на базе площадки СОГБУК Музей Ю.А. Гагарина , как проект, увеличивающий интерес к истории космонавтики и ее отражения в музыкальной культуре. с 5 по 24 апреля 2016 . ...

Ultraviolet data (DUV) . ... The section "Original data" contains original information in analogue-digital and digital- analogue codes. The section "Data for analysis" contains pre-processed data for further analysis. Tatiana" program can be used for graph presentation of the experimental data, and "Orbitron" program - for geographical control of the data. Manual on how to use the programs and the data is in the HELP-file. ... Original data . Data for analysis . Tatiana program . ...

SETI@home consists of a receiving Arecibo antenna, a professional team (PT), and a two-way Internet connection between the PT and an army of S@h users, who load from the S@h server special software for digital signal processing. ... Thereby, METI@home will consist of several originators, which may load via Internet from a M@h server special software for the creation of analog and digital messages. ... Professional Group SETI@home . ... Professional Group METI@home . ... Main Internet Server . ...