The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

... Data . ... WFPC2 Home . ... A common analysis problem for WFPC2 observations is the subtraction of the PSF from a much fainter background object. ... Make PSF observations at the same location. ... Make PSF observations using the same filter, and using a star with a similar spectrum. ... Observers with M(target) -- M(bright star) larger than the limiting values in the center column should be prepared to use PSF subtraction (i.e., using PSF from Tiny Tim, the archives, or their own observations). ...

MIC Discussion Discussion of the Maximal Information Coefficient Alexander W Blocker http://www.awblocker.com/ Feb 21 2012 MIC Discussion Outline Outline 1 Defining MIC Subtleties technical issues Simon Tibshirani's response Broader concerns lessons 2 3 4 MIC Discussion Defining MIC Outline 1 Defining MIC Subtleties technical issues ... MIC Discussion Broader concerns & lessons Note Concerns here are not particular to the Reshef et al. paper. ...

... Zodiacal Light and the False Dawn . ... An unusual triangle of light will be particularly bright near the eastern horizon before sunrise during the next two months for observers in Earth's northern hemisphere. Once considered a false dawn, this triangle of light is actually Zodiacal Light, light reflected from interplanetary dust particles. APOD: 2004 August 24- Supply Ship Approaches the Space Station . ... Looking Out Over Mars . ... Earth at Night . ... Lightning on Earth . ... August . ...

Optimal transportation, curvature flows, and related a priori estimates Alexander Kolesnikov Moscow 2010 1 Curvature flow Shrinking family of (convex) surfaces At, where every point x A on the curvature of A at x x = -K (x) Ї n(x). Here K (x) is the (Gauss) curvature of At at x. Approaches to the curvature flows Ї 1) Solving a parabolic nonlinear equation with smooth data ( R.S. Hamilton, R. Huisken .. ... curvature flow x = -td where t = (x). ... C1(M ) sup | ... Let F (r, ) be a smooth function. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Monthly Sky Notes . ... March . ... By admin March 1, 2016 Posted in: March . ... Because of this, Jupiter will be brighter than it has been at any other time this year and will be visible all night long. ... There will be a New Moon in the sky on 9th March, so no moon light will flood the sky and we will be able to see many of the stars. ... A lunation or synodic month is the mean (average) time from one new moon to the next. ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Site . ... Roof Status . ... If you select Winer to provide the site and maintenance for your remotely-operated telescope, your telescope will be housed in the modern roll-off roof observatory seen at left. ... The building computer and most customer telescope control computers are programmed to keep logs to assist in diagnosing problems in moving the roof or telescopes, or in controlling the instruments. ...

Large networks may have thousands of systems connected to them. A domain name addressing scheme is used to specify system addresses in a way that humans can understand. The top level domain for the UK is uk . ... If the organisation has a large number of systems, then the organisational domain might also contain sub-domains, each of which contains a number of systems. ... The mail address for any system can be given as a series of domains, each of which is separated by a dot (full stop). ...

... Questions: . ... Find some information on the design and potential of the Advanced Gas Turbine. ... Find some information on the frequency and amount of oil spills which occur in the world's oceans in a given year. ... We don't care how many you get correct. However, of the questions there, explain which one had an answer that most surprised you and how should that answer affect our future policies? ... Find some information about the history of Dam failures in the US and Canada since 1900. ...

... 8, ``Celestial Mechanics'', 2002 On non--gravitational acceleration in Harrington--Abell comet motion due to Jupiter O. F. Grigoryan 1 , Yu. D. Medvedev 2 1 Vologda State Pedagogical Unyversity, Vologda, Russia 2 Institute of Applied Astronomy, St. Petersburg, Russia The problem of the tidal forces influence on the cometary nucleus in vicinity of Jupiter is considered. ... It means that the exterior part of cometary nucleus has been broken during approach and went off the nucleus. ...

... Episode and Level # : E2M1 Single Player : Yes Cooperative 2-4 Player : Yes (tested) Deathmatch 2-4 Player : Yes (tested I'm not a deathmatch player but.. I did enjoy playing it in deathmatch mode with another player) Difficulty Settings : Yes New Sounds : Yes New Graphics : Yes Demos Replaced : Demo1,Demo2 * Construction * Base : New level from scratch Build Time : 1.680035E+39 Editor(s) used : Deu and IDBSP Known Bugs : Will play slowly on 386 40 machines. ...

... One of the most obvious features of the plasma state is the rich variety of wave motions which plasmas can support. ... Some important wave parameters in general are: . ... The way the dispersion relation is calculated depends on the adopted plasma theory , which also determines the available wave modes. ... the more complicated the medium is, the more wave modes it support (we cannot have, e.g., ion plasma waves if ion motion is neglected in the first place, no matter how hot plasma is considered!)...

... 295, 2003 H. E. Payne, R. I. Jedrzejewski, and R. N. Hook, eds. Calibration of BIMA Data in AIPS++ Daniel Goscha, David M. Mehringer, Raymond L. Plante National Center for Supercomputing Applications Anuj Sarma University of Il linois Abstract. ... Finally, we will present a comparison of data calibrated in MIRIAD and AIPS++. ... Introduction We present the results of a comparison of calibrated millimeter data from the Berkeley-Illinois-Maryland Association (BIMA) Array using both AIPS++ and MIRIAD....

Next: Deconvolution, Restoration and Self-Calibration Up: The Individual Approach Previous: The Individual Approach . Although this is largely a matter of taste, it may be convenient (particularly if self-calibration is to be used) to split the multi-pointing visibility dataset into single pointing ones. ... Even though you are imaging just a single pointing, you will still want to use invert 's mosaic mode ( options=mosaic ). ... INVERT . ... Select a single pointing. options=mosaic . ...

Log N -- Log S distribution as a new test for cooling curves of neutron stars S.B. Popov # , H. Grigorian +,## , R. Turolla # and D. Blaschke ї,І # Universitetski 13, 119992 Moscow, Russia + Dґ18051 Rostock, Germany ## Alex Manoogian 1, 375025 Yerevan, Armenia # Marzolo 8, 35131, Padova, Italy ї Dґ33615 Bielefeld, Germany І 141980, Dubna, Russia Abstract. We propose to use population synthesis studies as an independent approach to test the physics governing the star cooling. ...

ESO Phase 3 Data Release Description Please start from this template when preparing the documentation for your ESO Phase 3 data release. ... Finally, the release description will be published as submitted - without further editing by ESO - to support the user community in utilizing the data. ... Please indicate if this is a catalogue data release. ... Data Reduction and Calibration Please address the following questions for scientific catalogue data, particularly in case of source catalogues: . ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

... Bojan Nikolic web pages home . Next: Fitting of models of radio spectra --.. ... I describe an approach to fitting and comparison of radio spectra based . on Bayesian analysis and realised using a new implementation of the . ... used maximum-likelihood fitting of radio spectra by allowing objective . ... implementation details of the computer code. ... overall approach described here may also be useful for analysis of other . ... Copyright 2012, Bojan Nikolic feedback welcome ...

In this chapter we will consider two very simple but useful Web agents that I have written on Actor Prolog for my own needs. ... Let us start the Web agent. Fig. ... Start of the Web agent. The Context diagram consists of three blocks: "Logic Programming Sites", "Edit", and "Check". ... Some Web sites that are linked with the logic programming and Prolog are listed in the pulldown list (these addresses are transferred to the "Edit" block from the "Logic Programming Sites" block). ...

... Summer is a busy time for us at the ASP, filled with opportunities to advance our mission; in particular, we have a unique opportunity provided by a generous supporter that we'd like to share with you, and ask for your help in achieving. The TABASGO Foundation on behalf of Las Cumbres Observatory Global Telescope has provided the ASP with a challenge grant to upgrade its aging information technology systems. ... The Foundation will match dollar-for-dollar to reach the cost. ...