Astrodynamics 2019
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Dustin M. Schroeder
Dustin M. Schroeder Assistant Professor of Geophysics Department of Geophysics, School of Earth, Energy, and Environmental Sciences 397 Panama Mall, Mitchell Building 361, Stanford University, Stanford, CA 94305 [email protected], 440.567.8343 EDUCATION 2014 Jackson School of Geosciences, University of Texas, Austin, TX Doctor of Philosophy (Ph.D.) in Geophysics 2007 Bucknell University, Lewisburg, PA Bachelor of Science in Electrical Engineering (B.S.E.E.), departmental honors, magna cum laude Bachelor of Arts (B.A.) in Physics, magna cum laude, minors in Mathematics and Philosophy PROFESSIONAL EXPERIENCE 2016 – present Assistant Professor of Geophysics, Stanford University 2017 – present Assistant Professor (by courtesy) of Electrical Engineering, Stanford University 2020 – present Center Fellow (by courtesy), Stanford Woods Institute for the Environment 2020 – present Faculty Affiliate, Stanford Institute for Human-Centered Artificial Intelligence 2021 – present Senior Member, Kavli Institute for Particle Astrophysics and Cosmology 2016 – 2020 Faculty Affiliate, Stanford Woods Institute for the Environment 2014 – 2016 Radar Systems Engineer, Jet Propulsion Laboratory, California Institute of Technology 2012 Graduate Researcher, Applied Physics Laboratory, Johns Hopkins University 2008 – 2014 Graduate Researcher, University of Texas Institute for Geophysics 2007 – 2008 Platform Hardware Engineer, Freescale Semiconductor SELECTED AWARDS 2021 Symposium Prize Paper Award, IEEE Geoscience and Remote Sensing Society 2020 Excellence in Teaching Award, Stanford School of Earth, Energy, and Environmental Sciences 2019 Senior Member, Institute of Electrical and Electronics Engineers 2018 CAREER Award, National Science Foundation 2018 LInC Fellow, Woods Institute, Stanford University 2016 Frederick E. Terman Fellow, Stanford University 2015 JPL Team Award, Europa Mission Instrument Proposal 2014 Best Graduate Student Paper, Jackson School of Geosciences 2014 National Science Olympiad Heart of Gold Award for Service to Science Education 2013 Best Ph.D. -
Bolden Testimony
HOLD FOR RELEASE UNTIL PRESENTED BY WITNESS November 17, 2011 Statement of The Honorable Charles F. Bolden, Jr. Administrator National Aeronautics and Space Administration before the Subcommittee on Science and Space Committee on Commerce, Science and Transportation U. S. Senate Mr. Chairman and Members of the Subcommittee, thank you for the opportunity to appear before you today to discuss the outlook for NASA’s human space flight program. This has been a remarkable year, as we have completed assembling and outfitting of the U.S. On-orbit Segment (USOS) of the International Space Station (ISS), allowing us to focus on full utilization of the Station’s research capabilities; taken key steps in moving forward into the future of exploration beyond Low-Earth Orbit (LEO); celebrated the 50 th anniversary of human spaceflight; and witnessed the successful conclusion of the historic Space Shuttle Program. We are also pleased with the progress our industry partners have made in developing an American capability to transport cargo and eventually astronauts to the ISS, and end the outsourcing of this work to foreign governments. More importantly, this will add a critical level of redundancy for transporting cargo and crew to the ISS. A robust transportation architecture is important to ensuring full utilization of this amazing research facility. Enabling commercial crew and cargo transportation systems in LEO allows NASA to focus on developing its own systems for sending astronauts on missions of exploration beyond LEO. This split between commercial and Government systems allows for a cost effective approach to promote a broad base for human exploration by the United States. -
7'Tie;T;E ~;&H ~ T,#T1tmftllsieotog
7'tie;T;e ~;&H ~ t,#t1tMftllSieotOg, UCLA VOLUME 3 1986 EDITORIAL BOARD Mark E. Forry Anne Rasmussen Daniel Atesh Sonneborn Jane Sugarman Elizabeth Tolbert The Pacific Review of Ethnomusicology is an annual publication of the UCLA Ethnomusicology Students Association and is funded in part by the UCLA Graduate Student Association. Single issues are available for $6.00 (individuals) or $8.00 (institutions). Please address correspondence to: Pacific Review of Ethnomusicology Department of Music Schoenberg Hall University of California Los Angeles, CA 90024 USA Standing orders and agencies receive a 20% discount. Subscribers residing outside the U.S.A., Canada, and Mexico, please add $2.00 per order. Orders are payable in US dollars. Copyright © 1986 by the Regents of the University of California VOLUME 3 1986 CONTENTS Articles Ethnomusicologists Vis-a-Vis the Fallacies of Contemporary Musical Life ........................................ Stephen Blum 1 Responses to Blum................. ....................................... 20 The Construction, Technique, and Image of the Central Javanese Rebab in Relation to its Role in the Gamelan ... ................... Colin Quigley 42 Research Models in Ethnomusicology Applied to the RadifPhenomenon in Iranian Classical Music........................ Hafez Modir 63 New Theory for Traditional Music in Banyumas, West Central Java ......... R. Anderson Sutton 79 An Ethnomusicological Index to The New Grove Dictionary of Music and Musicians, Part Two ............ Kenneth Culley 102 Review Irene V. Jackson. More Than Drumming: Essays on African and Afro-Latin American Music and Musicians ....................... Norman Weinstein 126 Briefly Noted Echology ..................................................................... 129 Contributors to this Issue From the Editors The third issue of the Pacific Review of Ethnomusicology continues the tradition of representing the diversity inherent in our field. -
Espinsights the Global Space Activity Monitor
ESPInsights The Global Space Activity Monitor Issue 2 May–June 2019 CONTENTS FOCUS ..................................................................................................................... 1 European industrial leadership at stake ............................................................................ 1 SPACE POLICY AND PROGRAMMES .................................................................................... 2 EUROPE ................................................................................................................. 2 9th EU-ESA Space Council .......................................................................................... 2 Europe’s Martian ambitions take shape ......................................................................... 2 ESA’s advancements on Planetary Defence Systems ........................................................... 2 ESA prepares for rescuing Humans on Moon .................................................................... 3 ESA’s private partnerships ......................................................................................... 3 ESA’s international cooperation with Japan .................................................................... 3 New EU Parliament, new EU European Space Policy? ......................................................... 3 France reflects on its competitiveness and defence posture in space ...................................... 3 Germany joins consortium to support a European reusable rocket......................................... -
CAROL PATY [email protected] 1 Associate Professor Robert D. Clark
CAROL PATY [email protected] Associate Professor Robert D. Clark Honors College & Department of Earth Sciences 1293 University of Oregon Eugene, OR 97403-1293 Educational Background: B.A. Physics & Astronomy 2001 Bryn Mawr College Ph.D. Earth & Space Sciences 2006 University of Washington (Advisor: R. Winglee) Employment History: Undergraduate Teaching Assistant, Bryn Mawr College, Physics 1998-2001 Graduate Teaching Assistant, University of Washington, Earth & Space Sciences 2002-2005 Graduate Research Assistant, University of Washington, Earth & Space Sciences 2001-2006 Instructor, Chautauqua Course on Space Weather & Planetary Magnetospheres 2006 (Summer) Postdoctoral Researcher, Southwest Research Institute, Space Science & Engineering 2006-2008 Assistant Professor, Georgia Institute of Technology, Earth & Atmospheric Science 2008-2014 Associate Professor, Georgia Institute of Technology, Earth & Atmospheric Science 2014-2018 Associate Professor, University of Oregon, Clark Honors College & Earth Sciences 2018-present Current Research Interests: Space Plasma Physics, Planetary Magnetospheres, Planetary Upper Atmospheres/Ionospheres, Icy Satellites, Dusty Plasmas, Mars Atmospheric Evolution, Astrobiology, Mission Planning Activities (Cassini, Jupiter Icy Moon Explorer: JUICE, Europa Clipper Mission, Trident, Odyssey PMCS) Synergistic Activities: National Academy of Sciences – Ocean Worlds and Dwarf Planets Panel for the ‘Planetary Science and Astrobiology Decadal Survey 2023-2032’ October 2020 – present Icarus Editor 2017-present Outer -
Deep Space Atomic Clock
National Aeronautics and Space Administration Deep Space Atomic Clock tion and radio science. Here are some examples of how one-way deep-space tracking with DSAC can improve navigation and radio science that is not supported by current two-way tracking. Ground-based 1. Simultaneously track two spacecraft on a atomic clocks are downlink with the Deep Space Network (DSN) the cornerstone of at destinations such as Mars, and nearly dou- spacecraft navigation ble a space mission’s tracking data because it for most deep-space missions because of their use no longer has to “time-share” an antenna. in generating precision two-way tracking measure- ments. These typically include range (the distance 2. Improve tracking data precision by an order of between two objects) and Doppler (a measure of magnitude using the DSN’s Ka-band downlink the relative speed between them). A two-way link (a tracking capability. signal that originates and ends at the ground track- ing antenna) is required because today’s spacecraft 3. Mitigate Ka-band’s weather sensitivity (as clocks introduce too much error for the equivalent compared to two-way X-band) by being able one-way measurements to be useful. Ground atom- to switch from a weather-impacted receiving ic clocks, while providing extremely stable frequen- antenna to one in a different location with no cy and time references, are too large for hosting on tracking outages. a spacecraft and cannot survive the harshness of space. New technology is on the horizon that will 4. Track longer by using a ground antenna’s en- change this paradigm. -
Mars Pathfinder
NASA Facts National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, CA 91109 Mars Pathfinder Mars Pathfinder was the first completed mission events, ending in a touchdown which left all systems in NASAs Discovery Program of low-cost, rapidly intact. developed planetary missions with highly focused sci- The landing site, an ancient flood plain in Mars ence goals. With a development time of only three northern hemisphere known as Ares Vallis, is among years and a total cost of $265 million, Pathfinder was the rockiest parts of Mars. It was chosen because sci- originally designed entists believed it to as a technology be a relatively safe demonstration of a surface to land on way to deliver an and one which con- instrumented lander tained a wide vari- and a free-ranging ety of rocks robotic rover to the deposited during a surface of the red catastrophic flood. planet. Pathfinder In the event early in not only accom- Mars history, sci- plished this goal but entists believe that also returned an the flood plain was unprecedented cut by a volume of amount of data and water the size of outlived its primary North Americas design life. Great Lakes in Pathfinder used about two weeks. an innovative The lander, for- method of directly mally named the entering the Carl Sagan Martian atmos- Memorial Station phere, assisted by a following its suc- parachute to slow cessful touchdown, its descent through and the rover, the thin Martian atmosphere and a giant system of named Sojourner after American civil rights crusader airbags to cushion the impact. -
SAMENA TRENDS Bocar A
Volume 10, August, 2019 A SAMENA Telecommunications Council Publication www.samenacouncil.org S AMENA TRENDS FOR SAMENA TELECOMMUNICATIONS COUNCIL'S MEMBERS BUILDING DIGITAL ECONOMIES Tech Mahindra: The Rise of the DX-Organization ... 59 Loon: Overcoming the Infrastructure Challenge in Broadband ... 74 Featured Eng. Nezar Banbeela Chief Executive Officer VIVA Bahrain THIS MONTH MATERIALIZING THE DIGITAL AGENDA 7441_Et_Business Mobile App_SAMENA Magazine_A4.indd 1 5/21/19 1:36 PM VOLUME 10, AUGUST, 2019 Contributing Editors Knowledge Contributions Subscriptions Izhar Ahmad Alfa [email protected] SAMENA Javaid Akhtar Malik Huawei Loon Advertising TRENDS Syniverse [email protected] Tech Mahindra Editor-in-Chief SAMENA TRENDS Bocar A. BA Publisher [email protected] SAMENA Telecommunications Tel: +971.4.364.2700 Council CONTENTS 05 EDITORIAL FEATURED 10 REGIONAL & MEMBERS UPDATES Members News Regional News 62 SATELLITE UPDATES Satellite News 77 WHOLESALE UPDATES Wholesale News 83 TECHNOLOGY UPDATES The SAMENA TRENDS newsletter is wholly Technology News 06 Eng. Nezar Banabeela owned and operated by The SAMENA Chief Executive Officer Telecommunications Council (SAMENA 92 REGULATORY & POLICY UPDATES VIVA Bahrain Council). Information in the newsletter is not Regulatory News intended as professional services advice, and SAMENA Council disclaims any liability for A Snapshot of Regulatory use of specific information or results thereof. Activities in the SAMENA Region Articles and information contained in this publication -
The Strength of Regolith and Rubble Pile Asteroids Arxiv:1306.1622V2 [Astro-Ph.EP] 5 Mar 2014
The Strength of Regolith and Rubble Pile Asteroids∗ P. S´anchez and D.J. Scheeres The University of Colorado at Boulder Abstract We explore the hypothesis that, due to small van der Waals forces between constituent grains, small rubble pile asteroids have a small but non-zero cohesive strength. The nature of this model predicts that the cohesive strength should be constant independent of aster- oid size, which creates a scale dependence with relative strength in- creasing as size decreases. This model counters classical theory that rubble pile asteroids should behave as scale-independent cohesionless collections of rocks. We explore a simple model for asteroid strength that is based on these weak forces, validate it through granular me- chanics simulations and comparisons with properties of lunar regolith, and then explore its implications and ability to explain and predict observed properties of small asteroids in the NEA and Main Belt pop- ulations, and in particular of asteroid 2008 TC3. One conclusion is that the population of rapidly rotating asteroids could consist of both distributions of smaller grains (i.e., rubble piles) and of monolithic boulders. arXiv:1306.1622v2 [astro-ph.EP] 5 Mar 2014 1 Introduction The strength and morphology of small asteroids in the solar system remains an open and fundamentally interesting scientific issue. The strength of a rubble pile body will control how fast it can rotate before shedding mass or disrupting, influence the process by which binary asteroids are created, and ∗Accepted in Meteoritics and Planetary Science, 2/2014. 1 could have significance for the mitigation of hazardous near-Earth asteroids (NEA) should this be necessary in the future. -
Asteroid Redirect Mission (ARM) Formulation Assessment and Support Team (FAST) Final Report
NASA/TM–2016-219011 Asteroid Redirect Mission (ARM) Formulation Assessment and Support Team (FAST) Final Report Daniel D. Mazanek and David M. Reeves, Langley Research Center, Hampton, Virginia Paul A. Abell, Johnson Space Center, Houston, Texas Erik Asphaug, Arizona State University, Tempe, Arizona Neyda M. Abreu, Penn State DuBois, DuBois, Pennsylvania James F. Bell, Arizona State University, Tempe, Arizona William F. Bottke, Southwest Research Institute, Boulder, Colorado Daniel T. Britt and Humberto Campins, University of Central Florida, Orlando, Florida Paul W. Chodas, Jet Propulsion Laboratory, Pasadena, California Carolyn M. Ernst, John Hopkins University, Laurel, Maryland Marc D. Fries, Johnson Space Center, Houston, Texas Leslie S. Gertsch, Missouri University of Science and Technology, Rolla, Missouri Daniel P. Glavin, Goddard Space Flight Center, Greenbelt, Maryland Christine M. Hartzell, University of Maryland, College Park, Maryland Amanda R. Hendrix, Planetary Science Institute, Niwot, Colorado Joseph A. Nuth, Goddard Space Flight Center, Greenbelt, Maryland Daniel J. Scheeres, University of Colorado, Boulder, Colorado Joel C. Sercel, TransAstra Corporation, Lake View Terrace, California Driss Takir, United States Geological Survey, Flagstaff, Arizona Kris Zacny, Honeybee Robotics, Pasadena, California February 2016 NASA STI Program ... in Profile Since its founding, NASA has been dedicated to the CONFERENCE PUBLICATION. advancement of aeronautics and space science. The Collected papers from scientific and technical NASA scientific and technical information (STI) conferences, symposia, seminars, or other program plays a key part in helping NASA maintain meetings sponsored or this important role. co-sponsored by NASA. The NASA STI program operates under the auspices SPECIAL PUBLICATION. Scientific, technical, or of the Agency Chief Information Officer. -
Writing Successful Proposals: OBSERVATIONS from NASA
Writing Successful Proposals: OBSERVATIONS FROM NASA Dr. Thomas H. Zurbuchen Associate Administrator Science Mission Directorate @Dr_ThomasZ Context for Today's Talk • Only focused on Announcements of Opportunity, not ROSES selections • Large and increasing number of NASA science missions led by PIs • Proven high rates of mission success across science disciplines resulting from PI-class missions management methodology • Process of becoming a PI is complex and involves many stakeholders, with more than 80% of all submitted mission proposals failing at Step 1 • Will use historical data to discuss our view of process and philosophy, questioning how we can do better • Already changed proposal process and will without doubt, do it again • Note, some comments reflect views of the current NASA Science Associate Administrator and leadership team • Today’s talk is being webcast and recorded; all content will be made available on science.nasa.gov/researchers/new-pi-resources 2 Imagine Being a PI… • You receive a call from me informing you that your mission was selected for development • Your life changes in a heartbeat; you have already invested a significant fraction of at least two years with your project, and know strengths and weaknesses of your partners and team • You have survived two major down-selects; you have managed to raise support measured in millions of dollars and in work-years from your team • You know you have lots of autonomy, but you have lots of responsibility as well; you will represent your mission, NASA, and an entire science -
Krista Marie Soderlund the University of Texas at Austin Institute for Geophysics, John A
Krista Marie Soderlund The University of Texas at Austin Institute for Geophysics, John A. & Katherine G. Jackson School of Geosciences J.J. Pickle Research Campus, Bldg. 196 (ROC), 10100 Burnet Rd. (R2200), Austin, TX 78758-4445 [email protected], Office: 512-471-0449, Cell: 218-349-3006, FAX: 512-471-8844 Research Interests Geophysical Fluid Dynamics, Magnetohydrodynamics, Planetary Science, Cryosphere Education University of California, Los Angeles Ph.D., Geophysics and Space Physics, 2011 M.S., Geophysics and Space Physics, 2009 Florida Institute of Technology B.S., Double major in Physics & Space Science, 2005, Summa Cum Laude Employment University of Texas at Austin, Institute for Geophysics Research Associate, September 2014-Present UTIG Postdoctoral Fellow, October 2011-September 2014 University of California, Los Angeles, Department of Earth and Space Sciences Graduate Student Researcher, Advisor: Dr. Jonathan M. Aurnou, 2006-2011 California Institute of Technology, Division of Geological and Planetary Sciences Summer Undergraduate Research Fellow, Dr. Joann M. Stock, 2005 NASA Jet Propulsion Laboratory, CA Consultant, Dr. Bonnie J. Buratti, 2006 Planetary Geology & Geophysics Undergrad Research Program, Dr. B.J. Buratti, 2004 Florida Institute of Technology, Department of Physics and Space Science Undergraduate Researcher, Dr. Niescja E. Turner, 2004-2005 Naval Oceanographic Office, Hydrology Code, Stennis Space Center, MS Physical science aid, 2003 Mission Experience Saturn Probe Interior and aTmosphere Explorer (SPRITE)