... Consider the braid group $B_3= $ and the nearest neighbor random walk defined by a probability $\nu$ on $\{a,a^{-1},b,b^{-1}\}$ that generates the whole group. ... The techniques developped to solve this problem apply, mutatis mutandis, to nearest neighbor random walks on other groups: (i) Artin groups of dihedral type; (ii) free products with amalgamation in which the factor groups are plain groups and the amalgamated subgroup is finite; (iii) HNN extensions in which the base group is finite. ...

... Our Galaxy . ... Stars . ... Image credit: ESO, Acknowledgement: VST/Omegacam Local Group Survey) . First observed in 1909, the WLM galaxy is part of the Local Group, about 10 million light years (3.1 Mpc) across, this is the set of more than 35 galaxies which includes our own Milky Way. ... I compared this little galaxy to a living fossil because looking at it gives us an insight into a past era in the UniverseтАЩs history. ... Distances and metallicities for 17 Local Group galaxies? . ...

... Right now, the world needs 10,000 additional radiotherapy machines to meet demand. ... The imaging and tracking (source finding) techniques being pioneered for Nano-X form part of an inter-disciplinary research program being developed through a CAASTRO collaboration currently involving Medical Physics and Astrophysics at Sydney and Curtin Universities, together with the Nelune Comprehensive Cancer Centre at Prince of Wales Hospital. ...

... You are here: start €Ё lbaops €Ё lba-opssydney21-22feb12 . Trace: тАв lba-opssydney21-22feb12 . VLBI Schedule . LBA Home Page . ... LBA Correlation . ... Observer's Wiki . ... lbaops:lba-opssydney21-22feb12 . Annual LBA Operations, eVLBI and Networking Meeting . Sydney, 21-22 February 2012 . Block Agenda. ... Please review the Action items from the 2011 LBA ops meeting . ... Block Agenda for 2012 Ops/technical meeting . Detailed Agenda for 2012 Ops/technical meeting . ...

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Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 06 - 12.02.2012, Forecast on 13 - 20.02.2012, Carrington Rotations 2120 (06,28.02.2012) SOLAR SUNSPOT ACTIVITY OF THE LAST PERIOD WAS ON AVERAGE AND LOW LEVELS. ... ON THE VISIBLE SOLAR DISK DURING THE LAST WEEK THE FOLLOWING CORONAL HOLES WERE OBSERVED: --------------------------------------------------------------------- sign N end Х end S end W end EE R Observatories CH + N20L327 N10L325 N00L332 N20L330 11.02 1 KP, SDO, SOHO.. ...

Astronomy Picture of the Day . Comet Hale-Bopp Develops a Tail . ... 12.02.1997 . ... February 1997 . ... 1997 1998 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: tail - Comet Hale-Bopp . Publications with words: tail - Comet Hale-Bopp . ... Comet Hale Bopp Over Val Parola Pass . ... Comet Holmes Grows a Tail . ... Comet Hale Bopp Over the Superstition Mountains . Exploring Comet Tails . ...

... Home Education Classes AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016 . ... Classes . ... AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ March 2016 . ... 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 . ...

The group that operates in Firenze and Urbino has developed a number of inertial sensor of displacement (accelerometers), that are needed in the control loop of the superattenuators, and is also concerned in the measurement of the seismic noise in the area of the interferometer. ... 39-0552307-696 . ... 39-050911255 . ... 39-07224892 . ... 39-0552752-218 . ... Arcetri Home Page . Virgo Group Page . ...

LAUNCHING . Rocket-Space Complex N1-L3 being . ... As a result of high-frequency vibrations in the engine №2 gas generator, a pressure reducing connector behind a turbine broke off and leakage of components occurred that caused a fire in the aft compartment and violated the engine control system operation that commanded to shut down engines at 68.7s. Despite the accident, this launch has proved the validity of the dynamic profile, launch dynamics, LV control processes using the ...

ALMA | ... Phase Correction Algorithms | ... On this page, we describe what the phase correction algorithms set out to do and the framework we have developed to optimally use all of the available information. ... We are developing a Bayesian framework to combine all the information we have about the current and future meterological conditions (which are naturally accommodated as priors in a Bayesian scheme) with detailed physical models of the atmosphere. ...

... ESO for the Public > Doing Business with ESO > Technology Transfer > Developments at ESO . ... About ESO . ... Survey Telescopes . ... The survey has been carried out at ESO in late 2004 to document both the technologies developed by, or for, ESO as well as examples of Technology Transfer that have taken place. ... Technologies that have been developed or extended in collaboration with industry through an ESO development contract or collaboration agreement, etc. ... Historic Developed Technologies ....

of the RadioAstron Teleconference 4 . ... The agenda of the teleconference and the list of participants are attached as an Appendix A to the Minutes. The main intents of the teleconference were to discuss the results of Pushchino tests, to develop actions in order to overcome the problem of aging of 6-cm and 18-cm receivers and to understand situation with NASA support for the project. ... Andreyanov informed the participants about the procedure and main results of Pushchino tests. ...

... Archive for February 2007 . ... Sometime early this year, Jeremy Drake asked this innocuous sounding question in the context of determining the bounds on the amplitude of an absorption line: Is the 3sigma error bar the same length as 3 times the 1sigma error bar? ... Likelihoodists will say ?Maybe, yeah, er, depends?, and Bayesians will say ? ... Tags: Bayesian , central limit theorem , confidence bounds , error bar , Frequentist , highest posterior density , HPD , likelihoodist , sigma . ...

... Institute of Solar-Terrestrial Physics, Lermontov St. 126, Irkutsk, Russia 664033, E-mail: root@sitmis.irkutsk.su . ... Special requirements, convenience, and efficiency led us to the creation of an expanding library of IDL routines and programs, described herein. ... In response to inherently specific features of our instrument, the SSRT, and to our research needs and preferences, we have developed, supplemented, and corrected some routines from the standard IDL library. ...

... Basic Observables: Zero-differenced phase and code ionosphere-free combinations of global GNSS network stations, corrected by P1-C1 satellite code biases (cc2noncc), daily observations with 30 seconds sampling rate Sites coordinates : IGb08 reference frame coordinates and velocities Displacements: solid tides, ocean loading, pole tide loading (IERS 2010) Geometric model : Receivers antennas eccentricities, absolute receiver and ...

. Dedicated to 40th anniversary of the . first artificial Earth satellite launch . Russian (Win) .

Numerical theory of rotation of the deformable Earth with the fluid core, and its fitting to VLBI data . ... Improved differential equations of the rotation of the deformable Earth with the two-layer fluid core are developed. ... Poincare's method of modeling the dynamical effects of the fluid core, and Sasao's approach for calculating the tidal interaction between the core and mantle in terms of the dynamical Love number are generalized for the case of the two-layer fluid core. ...

Drawing and Part Configuration Management and Release Procedures: . ... Context: This procedure is intended for use by APO Telescope Drafting and Engineering personnel for the development, release and maintenance of telescope related models, drawings, and other controlled documents to facilitate the sharing of information between the various institutions and personnel that have need of technical information and engineering files regarding APO telescope design and development. ... Release Procedure: . ...

The Russian Parliament will soon consider a bill that would restructure the Russian space program, 35 years after the launch оf Sputnik. ... But the legislation's most striking and controversial feature is a provision that would ban testing and deployment оf space weapons ? including anti-satellite weapons and space-based missile interceptors. ... A draft bill was written by a group of experts within the Moscow Space Club, several of whom now work on space issues with the Russian Parliament. ...