Science and Engineering Indicators 2006 Volume 1
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Science with ALMA
Science with ALMA Contents 1 Introduction 2 1.1 Millimeter Astronomy . 2 1.2 A Major New Telescope for Millimeter Astronomy . 2 1.3 The Atacama Large Millimeter Array . 3 1.4 Science with the Atacama Large Millimeter Array . 7 2 Galaxies and Cosmology 9 2.1 The High-Redshift Universe . 9 2.2 Gravitational lenses . 18 2.3 Quasar absorption lines . 20 2.4 Sunyaev-Zel’dovich observations with ALMA . 23 2.5 Gas in Galactic Nuclei . 24 2.6 The Active Galactic Nucleus engine . 28 2.7 Galaxies in the Local Universe . 31 2.8 ALMA and the Magellanic Clouds . 32 3 Star and Planet Formation 34 3.1 The initial conditions of star formation . 34 3.2 Young Stellar Objects . 38 3.3 Chemistry of star-forming regions . 48 3.4 Protoplanetary disks . 52 4 Stars and their Evolution 59 4.1 The Sun . 59 4.2 Millimeter continuum emission from stars . 62 4.3 Circumstellar envelopes . 64 4.4 Post-AGB Sources . 66 4.5 Supernovae . 69 4.6 Gamma ray bursts . 69 5 The Solar System 71 5.1 Planetary atmospheres . 71 5.2 Asteroids and Comets . 73 5.3 Extrasolar planets . 76 6 Synergy with other Major Astronomical Facilities 78 1 1 INTRODUCTION 2 1 Introduction 1.1 Millimeter Astronomy The millimeter and submillimeter wavebands are unique in astronomy in containing more than 1000 radio spectral lines of interstellar and circumstellar molecules as well as the thermal continuum spectrum of cold dust in space. They are the only bands in the elec- tromagnetic spectrum in which we can detect cold dust and molecules far away in young, high-redshift galaxies in the early Universe, and nearby in low-temperature cocoons of pro- tostars in our own Galaxy. -
Analysis of Attitude and Achievement Using the 5E Instructional Model in an Interactive Television Environment
Old Dominion University ODU Digital Commons STEMPS Theses & Dissertations STEM Education & Professional Studies Spring 2011 Analysis of Attitude and Achievement Using the 5E Instructional Model in an Interactive Television Environment Gamaliel R. Cherry Old Dominion University Follow this and additional works at: https://digitalcommons.odu.edu/stemps_etds Part of the Educational Technology Commons, Instructional Media Design Commons, and the Science and Mathematics Education Commons Recommended Citation Cherry, Gamaliel R.. "Analysis of Attitude and Achievement Using the 5E Instructional Model in an Interactive Television Environment" (2011). Doctor of Philosophy (PhD), Dissertation, STEM Education & Professional Studies, Old Dominion University, DOI: 10.25777/q8t3-hd18 https://digitalcommons.odu.edu/stemps_etds/55 This Dissertation is brought to you for free and open access by the STEM Education & Professional Studies at ODU Digital Commons. It has been accepted for inclusion in STEMPS Theses & Dissertations by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Running head: 5E INSTRUCTIONAL MODEL ANALYSIS OF ATTITUDE AND ACHIEVEMENT USING THE 5E INSTRUCTIONAL MODEL IN AN INTERACTIVE TELEVISION ENVIRONMENT By Gamaliel R. Cherry B.S. December 2001, Elizabeth City State University M.A. ed. 2005, Old Dominion University A Thesis Submitted to the Faculty of Old Dominion University in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSPHY EDUCATION DARDEN -
Computational and Experimental Studies of Solids in the Ammonia
COMPUTATIONAL AND EXPERIMENTAL STUDIES OF SOLIDS IN THE AMMONIA – WATER SYSTEM A thesis submitted to the University of London for the degree of Doctor of Philosophy by Andrew Fortes Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United Kingdom January 2004 1 ABSTRACT This thesis reports the results of first-principles computational studies of thirteen crystalline structures in the H2O-NH3 system. This includes eight low- and high- pressure polymorphs of pure water ice, two polymorphs of solid ammonia, and three low-pressure stoichiometric ammonia hydrates. These simulations have been used to determine the athermal equation of state (EoS) of each phase. Where empirical data was lacking, experiments have been undertaken. Hence, this thesis also reports the results of time-of-flight neutron scattering studies of deuterated ammonia dihydrate powders down to 4 K, and up to a maximum pressure of 8.6 GPa. In addition, I have developed a flexible and accurate planetary model that can be used to calculate the triaxial shape and gravitational field of any object, regardless of size or composition, given an assumed mineralogical constitution and provided the EoS of said minerals are known. The EoS parameters found in this work have therefore been used to model the structure and thermal evolution of icy moons orbiting Saturn in anticipation of the Cassini spacecraft arriving at Saturn in mid-2004. Models of Rhea, Saturn’s second largest moon, suggest that its volatile component is likely to contain > 3 weight percent ammonia, but that one is unlikely to be able to constrain the bulk chemistry of the ice mantle from Cassini flyby data. -
Le Problème De L'incommensurabilité, Un Demi-Siècle Après
Philosophia Scientiæ Travaux d'histoire et de philosophie des sciences 8-1 | 2004 Le problème de l’incommensurabilité, un demi- siècle après Léna Soler (dir.) Electronic version URL: http://journals.openedition.org/philosophiascientiae/584 DOI: 10.4000/philosophiascientiae.584 ISSN: 1775-4283 Publisher Éditions Kimé Printed version Date of publication: 1 May 2004 ISBN: 2-84174-338-1 ISSN: 1281-2463 Electronic reference Léna Soler (dir.), Philosophia Scientiæ, 8-1 | 2004, “Le problème de l’incommensurabilité, un demi-siècle après” [Online], Online since 01 May 2004, connection on 15 January 2021. URL: http:// journals.openedition.org/philosophiascientiae/584; DOI: https://doi.org/10.4000/philosophiascientiae. 584 Tous droits réservés Introduction The Incommensurability Problem: Evolution, Current Approaches and Recent Issues Léna Soler The idea that competing scientific theories may be incommensurable was introduced in philosophy of science in 1962, simultaneously and independently by Thomas Kuhn and Paul Feyerabend1. Thereafter, in- commensurability promptly became one of the most central and contro- versial issues of 20th century philosophy of science. Half a century later, how has this issue evolved? The present volume of Philosophia Scientiae aims at providing the elements of an answer to this question. I will begin by stating the problem as it can be formulated today, from a point of view that allows us to distance ourselves from the most sig- nificant misunderstandings involved in the earliest discussions on incom- mensurability2 (and unfortunately still present in some recent works). This choice will allow us, at the same time, to profit by some useful distinctions that are nowadays available, but that were elaborated only at the price of careful and thorough analyses carried out over the past forty years. -
Contents Jun
Contents JUN. 18, 2021 (click on page numbers for links) CONTACT US REGULATORY UPDATE subscribers@chemwatch. ASIA PACIFIC net Explosives import certificate amendment fee ........................................................4 tel +61 3 9572 4700 Reassessment of methyl bromide ...............................................................................4 fax +61 3 9572 4777 APVMA Gazette ..................................................................................................................5 1227 Glen Huntly Rd AMERICA Glen Huntly Macaroni and cheese with a side of regulation......................................................5 Victoria 3163 Australia EPA should protect America’s children by further revisions of the Lead and Copper Rule .....................................................................................................6 High levels of arsenic and lead found in vinegar products, particularly balsamics ......................................................................................................8 EUROPE UK supermarkets to phase out forever chemicals, PFAS, from food packaging ............................................................................................................................9 British, Australian food standard differences causing angst in free * While Chemwatch trade deal ...........................................................................................................................10 has taken all efforts to ’Worrying, but not surprising’: Paucity of UK chemical