The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... 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 . ... Next: Step 3: Postprocessing to Up: How Pieflag works Previous: Step 1: Amplitude-based flagging . ...

... We discuss the application of the Pixon Based Image Restoration Method on spectroscopic HST data and compare the results with those obtained from the Richardson-Lucy and Jansson algorithms. In order to better evaluate the performance of the various algorithms we have also used artificial data. Keywords: Spectral restorations, Pixons, Richardson-lucy, Jansson . ...

... Up: Science Software Applications . ... It has extensions for creating GUI (Tk) and object-oriented ([incr tcl]) applications. Several Tcl-based tools that may be used for astronomical and other scientific applications have been created and are discussed. One example is ptcl , which registers PGPLOT functions as Tcl commands, creating a powerful interactive plotting package. ... Both programs use the same C code, Tcl commands, and [incr tcl] classes; only the GUIs are different. ...

... 7.03.2002 . ... Credit: Gerald Rhemann Explanation: In the last week , Comet Ikeya-Zhang has become bright enough to be just visible to the unaided eye. Based on its present activity, observers are optimistic that Ikeya-Zhang will become substantially brighter. This composite color image from March 3rd, captured with a wide-field telescope, shows this active comet's bright, condensed coma and a delightful array of subtle structures in its developing tail. ... Comet Holmes Over Hungary . ...

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

... Public . Science . ... Science Users Information > Observing with ESO Telescopes > Policies and Procedures > Publications with ESO Data . ... Observing with ESO Telescopes . ... Public Surveys . Publications with ESO Data . ... Large Programmes . ... ESO/GTC Programmes . Public Surveys Programmes . ... Phase 1 Proposals . ... Public Surveys Phase 2 . ... Publications making use of ESO observational data must include the following statement in a footnote or in the acknowledgement: . ...

... ISC Kosmotras . ... Baikonur Cosmodrome Yasny launch base Downloads . ... Dnepr LV (a converted SS-18 ICBM) with THEOS SC aboard was successfully launched from Yasny Launch Base several minutes ago. ... A new fuelling station and clean room 2 were used during the THEOS launch campaign at Yasny Launch Base. ... ISC Kosmotras' stock of orders contains signed contracts for five more launches scheduled for up to 2011 both from Baikonur Cosmodrome and Yasny Launch Base. ... 01.10.2008 . ... Dnepr Program...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Virtual Hosts . ... IP-based virtual hosting is a method to apply different directives based on the IP address and port a request is received on. ... As the term IP-based indicates, the server must have a different IP address/port combination for each IP-based virtual host . ... In the terminology of Apache HTTP Server, using a single IP address but multiple TCP ports, is also IP-based virtual hosting. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... Posts tagged ?model based? ... arXiv:stat.ME:0910.2585] . Variable Selection and Updating In Model-Based Discriminant Analysis for High Dimensional Data with Food Authenticity Applications . ... Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Jargon , Methods , Spectral , Stat | ... Tags: bimodality , chi-square minimization , Classification , CMD , Estimation , machine learning , massive data , model based , PCA , spectral analysis , spectroscopic , survey , VO . ...

NAUTICAL ASTRONOMICAL ALMANAC for 2011-2012 (in Russian-English) . Preface . The Institute of Applied Astronomy of the RAS (IAA RAS) submits the next issue of ?The Nautical Astronomical Almanac for the years 2011-2012? biennial (NAA-2). ... There are some auxiliary tables for interpolation and calculation of altitude and azimuth in NAA-2. Calculations of ephemerides in NAA-2 for 2011-2012 have been executed by the following researchers of Laboratory of Astronomical Yearbooks of IAA RAS: . ...

O ptimal transport : T heory and A pplications . ... Solar dynamo wave with meridional circulation: a WKB approach (H. Popova, D. Sokoloff) . Moment equations for linear and nonlinear equations with random coefficients (D. Grachev, D. Sokoloff) . ... Weighted nearest neighbor search in numerical transport optimization (A. Andrievskii, A. Sobolevskii) . ... WANN is part of a multipurpose library for numerical transport optimization developed in the OTARIE project. ...

... InformChaos Lab took part in CeBIT-2015 (Hannover, Germany) with "Active Ultra Wideband Wireless Networks". ... Lev Kuzmin received Dr.Sci. degree for his thesis "Wireless information transmission over UWB chaotic carrier" from IRE RAS. ... Artem Nikishov received Ph.D. degree from the Moscow Institute of Physics and Technology for the thesis "Generation of microwave chaotic oscillations in self-oscillating systems with several active elements". ... Our Products page is renewed. ... News | ...

... The Australian National University] [Department of Physics] [Paul Francis] [Main Roleplay Page] . These exercises are my attempt to adapt the technique of Problem Based Learning to the context of introductory astronomy and astrophysics classes. ... As students grapple with the puzzle, they are forced to learn the subject matter of the course. ... This exercise is designed for 1st year University students with a reasonable high-school background in Maths and Physics. ...

The perturbation method is based on the small-parameter expansion of an unknown solution of the light scattering problem in a vicinity of the exact solution. ... The only probably exclusion is the case of anisotropic particles for which the rigid solution is either impossible or too complicated. For such problems the perturbation method can give information of the first approximation, which is important for understanding of the basic principles of influences of the material anisotropy. ...

... Our resulting sample of ELGs presented in Tables 2 and 3 is not artificially biased to any specific type of galaxies. ... Since we are looking for selection of a sample of Case BCGs, it is interesting to examine how the detected BCGs are connected with Case emission-line codes. ... Altogether BCGs comprise about 60 % of all Case ELGs which display emission lines in our spectra, or about 44 % of all Case galaxies with some emission-line code. ... Among those with the code ``w'' about 40 % are BCGs. ...

... Samara State Aerospace University Staff Ivaschenko Anton Vladimirovich . ... 2015. ... 2014. ... Ivaschenko A.V. , Minaev A.A. Multi-agent solution for a self mediator sensor network // European Simulation and Modeling Conference 2014 (ESM 2014), October 22-24, 2014, Porto, University of Porto, 2014, P. 209-212 . ... 412677662, Ivaschenko A. Auction model of P2P interaction in multi-agent software // Proceedings of the 5th International Conference on Agents and Artificial Intelligence ICAART 2013. ...

... 2002 March 7 . Comet Ikeya-Zhang Brightens . ... Explanation: In the last week , Comet Ikeya-Zhang has become bright enough to be just visible to the unaided eye. Based on its present activity, observers are optimistic that Ikeya-Zhang will become substantially brighter. This composite color image from March 3rd, captured with a wide-field telescope, shows this active comet's bright, condensed coma and a delightful array of subtle structures in its developing tail. ... About APOD | ...