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Maryland - ASTR - 415
ICadafWWaHH$CHIaRp$a$wraWCawHa 9 i i S x i U bIxpU B @ e F k i 6 d B wP v q D A B FP PT B 8 6 qT Q v D 4 B v 4 @ D B F f D F B A @ A B F 6P k Uif'fbS7)UdRT Y rtuCaCdRR99R7$17t$ICdP Y `CaC9ECGR'$i S
Maryland - ASTR - 415
A Crash Course on UNIXUNIX is an "operating system".Interface between user and data stored on computer. A Windows-style interface is not required. Many flavors of UNIX (and windows interfaces).Solaris, Mandrake, RedHat (fvwm, Gnome, KDE)
Maryland - ASTR - 415
Data RepresentationsComputers store data as different variable types, e.g. integer, floating point, complex, etc. Different machines have different wordlengths, e.g. 4-byte ints on a 32-bit machine (Pentium), 8-byte ints on a 64-bit machine (Alpha).
Maryland - ASTR - 415
VisualizationVisualization is useful for:1) Data 2) Codeentry (initial conditions) debugging and performance analysis and display of results3) Interpretation Our focus will be #3. The computational astrophysicist can either:1) Develop 2) U
Maryland - ASTR - 415
Numerical Linear Algebra Probably the simplest kind of problem. Occurs in many contexts, often as part of larger problem. Symbolic manipulation packages can do linear algebra "analytically" (e.g. Mathematica, Maple). Numerical methods needed when:
Maryland - ASTR - 415
Nonlinear EquationsOften (most of the time?) the relevant system of equations is not linear in the unknowns. Then, cannot decompose as Ax = b. Oh well. Instead write as:(1) (2) f(x) = 0 f(x) = 0function of one variable (1-D) x = (x1,x2,.,xn
Maryland - ASTR - 415
Statistical Description of Data Cf. NRiC, Chapter 14. Statistics provides tools for understanding data.In the wrong hands these tools can be dangerous! Apply some formula to data to compute a "statistic". Find where value falls in a probability
Maryland - ASTR - 415
Modeling of Data NRiC Chapter 15. Model depends on adjustable parameters. Can be used for "constrained interpolation". Basic approach:1. 2. 3. 4.Choose figure-of-merit function (e.g. 2). Adjust best-fit parameters: minimize merit function. Co
Maryland - ASTR - 415
Random Numbers NRiC Chapter 7. Frequently needed to generate initial conditions. Often used to solve problems statistically. How can a computer generate a random number? It can't! Generators are pseudo-random. Generators are deterministic: i
Maryland - ASTR - 415
Numerical Integration (Quadrature) NRiC Chapter 4. Already seen Monte Carlo integration. Can cast problem as a differential equation (DE): = is equivalent to solving for I y(b) the DE dy/dx = f(x) with the boundary condition (BC) y(a) =
Maryland - ASTR - 415
Ordinary Differential Equations (ODEs) NRiC Chapter 16. ODEs involve derivatives wrt one independent variable, e.g. time t. ODEs can always be reduced to a set of firstorder equations (involving only first derivatives).e.g. = is
Maryland - MATH - 241
MATH 241 CALCULUS III FIRST MIDTERM EXAM Instructions. Answer each question on a separate answer sheet. Show all your work. Be sure your name, section number, and problem number are on each answer sheet, and that you have copied and signed the honor
Maryland - MATH - 241
MATH 241 CALCULUS III FIRST MIDTERM EXAM SOLUTIONS (1) For this problem, u = + k, and v = + 2 + 3 k. ij i j (a) u v = 1 + 2 3 = 2. k ij (b) u v = det 1 1 1 = 5 2 + 3 k. i j 1 2 3 (c) The symmetric form of the equations are: 2 x =
Maryland - ASTR - 601
Astronomy 601 - Fall 2005 Radiative ProcessesInstructor Prof. Massimo Ricotti Oce: CSS 0213 E-mail: ricotti@astro.umd.edu Phone: (301) 405 5097 Oce hours: by appointment Class web page: http:/www.astro.umd.edu/ricotti/NEWWEB/teaching/ASTR601.html Sc
Maryland - ECE - 2003
Center for Satellite and Hybrid Communication NetworksIntegrated Security Services for Dynamic Coalition ManagementHimanshu Khurana and Vijay Bharadwaj Electrical and Computer Engineering Department, University of Maryland College Park, Maryland 2
Maryland - ECE - 2003
Proceedings of the DARPA Information Survivability Conference and Exposition (DISCEX03) 0-7695-1897-4/03 $17.00 2003 IEEEProceedings of the DARPA Information Survivability Conference and Exposition (DISCEX03) 0-7695-1897-4/03 $17.00 2003 IEEEPr
Maryland - ECE - 2003
Integrated Security Services for Dynamic CoalitionsHimanshu Khurana1, Serban Gavrila1, Rakeshbabu Bobba, Radostina Koleva, Anuja Sonalker, Emilian Dinu, Virgil Gligor, and John Baras Electrical and Computer Engineering Department, University of Mary
Maryland - ECE - 2003
Towards Automated Negotiation of Access Control PoliciesVijay G. Bharadwaj and John S. Baras Institute for Systems Research, University of Maryland, College Park MD 20742, USA. vgb,baras @umd.eduAbstractWe examine the problem of negotiating acces
Maryland - ECE - 2003
DYNAMIC ADAPTATION OF ACCESS CONTROL POLICIESVijay Bharadwaj and John Baras Institute for Systems Research University of Maryland College Park MD 20742ABSTRACTWe describe an architecture and algorithms for deriving an access control policy by com
Maryland - ECE - 2003
Center for Satellite and Hybrid Communication NetworksIntegrated Security Services for Dynamic Coalition ManagementHimanshu Khurana Electrical and Computer Engineering Department, University of Maryland College Park, Maryland 20742 DARPA DC PI Mee
Maryland - ECE - 2003
Reasoning about Joint Administration of Access Policies for Coalition ResourcesHimanshu Khurana Virgil Gligor John Linnjlinn@rsasecurity.com{hkhurana, gligor}@eng.umd.eduUniversity of Maryland College Park, MD.RSA Labs Bedford, MA.OutlineC
Maryland - ECE - 2003
Center for Satellite and Hybrid Communication NetworksIntegrated Security Services for Dynamic Coalition ManagementVirgil D. Gligor and John S. Baras Electrical and Computer Engineering Department, University of Maryland College Park, Maryland 207
Maryland - ECE - 2003
Center for Satellite and Hybrid Communication NetworksIntegrated Security Services for Dynamic Coalition ManagementHimanshu Khurana and Vijay Bharadwaj Electrical and Computer Engineering Department, University of Maryland College Park, Maryland 2
Maryland - ECE - 2006
DK6037 FLPraveen K. MurthyFujitsu Laboratories of America, Sunnyvale, California, USAShuvra S. BhattacharyyaUniversity of Maryland, College Park, USAEffective Strategies for Aggressive Memory OptimizationAlthough programming in memory restri
Maryland - ECE - 2003
about the book. . . Ranging from low-level applicationand architectureoptimizationsto high-level modeling and exploration concerns,this text/reference compiles essentialresearchon various levels of abstractionappearingin embeddedsystemsand softwarede
Maryland - ECE - 2000
Marcel Dekker Catalog: Embedded MultiprocessorsPage 1 of 1Embedded MultiprocessorsScheduling and Synchronization Sundararajan Sriram, Texas Instruments, Inc., Dallas, Texas, and Shuvra S. Bhattacharyya, University of Maryland, College Park serie
Maryland - ECE - 1996
Springer - Signals & CommunicationPage 1 of 1springer.com Springer Berlin Heidelberg New YorkSignals & CommunicationSoftware Synthesis from Dataflow Graphs Series: The International Series in Engineering and Computer Science, Vol. 360 Bhattach
Maryland - GEOL - 100
INTRODUCTION TO PHYSICAL GEOLOGY GEOL100 -Section: 0102 -Fall 2004Professor: Bill McDonough Office Hours: Wednesday, 9-10 AM Office: Chemistry Bldg (091), room 0229 Phone: 301-405-5561 Email: mcdonough@geol.umd.edu (preferred communication medium)
Maryland - ASTR - 120
Homework #2Chapter 3 Q25 The dividing line between the illuminated and unilluminated halves of the Moon is called the terminator. The terminator appears curved when there is a crescent or gibbous moon, but appears straight when there is a first qu
Maryland - ASTR - 120
ASTR120 Homework #3 (Hamilton) due Thursday Sept. 27 (20 Points)Finish reading Chapter 4! Now you are cleared for this homework (from Chapter 3, page 92). Try to start early if you can - there are some interesting (but tricky!) problems this week.
Maryland - ASTR - 120
ASTR120 Homework #4 (Hamilton) due Thursday Oct. 4 (30 Points)Denitely nish reading Chapters 4 and 7! These rst ve problems are from Chapter 4. W4. Do problem W4 from http:/www.astro.umd.edu/hamilton/ASTR120/webexp.html. 46. A satellite is said to
Maryland - ASTR - 120
ASTR120 Homework #5 (Hamilton) due Thursday Oct. 18 (20 Points)These problems are from Chapter 8. Finish reading the chapter!Do problem W9 from http:/www.astro.umd.edu/hamilton/ASTR120/webexp.html. 12. What is meant by a substances condensation t
Maryland - ASTR - 120
ASTR120 Homework #6 (Hamilton) due Thursday Oct. 25 (20 Points)Finish reading Chapters 9 and 10! These rst six problems are from Chapter 9. 30. On average, the temperature beneath the Earths crust increases at a rate of 20 C per kilometer. At what
Maryland - ASTR - 120
ASTR120 Homework #7 (Hamilton) due Thursday Nov. 1 (20 Points)Finish reading Chapters 10 and 11. These problems are from Chapter 10. 29. Temperature variations between day and night are much more severe on the Moon than on Earth. Explain why. 31. U
Maryland - ASTR - 120
ASTR120 Homework #8 (Hamilton) due Thursday Nov. 8 (20 Points)Finish reading Chapters 11 and 12! This is the last graded homework before Exam 2 on Nov. 15. These problems are from Chapter 11. 56. The Mariner 2 spacecraft detected more microwave rad
Maryland - ASTR - 120
ASTR120 Homework #9 (Hamilton) due Thursday Nov. 29 (20 Points)Finish reading Chapter 12 and 13! These problems are from Chapter 12. 49. When Saturn is at dierent points in its orbit, we see dierent aspects of its rings because the planet has a 27
Maryland - ASTR - 120
ASTR120 Homework #10 (Hamilton) due Thursday Dec. 6 (20 Points)Finish reading Chapters 14, 15, and 28! These problems are from Chapter 14. 30. At certain points in its orbit, a stellar occultation by Uranus would not reveal the existence of the rin
Maryland - ASTR - 120
ASTR120 Challenge Problem #1 (Hamilton) Optional, due before Midterm #1In this challenge problem you will work out how large a shadow moons in our Solar System cast on their parent planets. a) Draw an accurate picture and use algebra and geometry t
Maryland - ASTR - 120
ASTR120 Challenge Problem #2 (Hamilton) Optional, due before Midterm #2In this challenge problem you will work out how Mars tilt and eccentricity aect its seasons. a) For an untilted Earth on a circular orbit at 1 AU, work out the average energy hi
Maryland - GEOL - 3
Geochemistry Geophysics GeosystemsClick HereAN ELECTRONIC JOURNAL OF THE EARTH SCIENCES Published by AGU and the Geochemical SocietyG3Technical Brief Volume 7, Number 11 25 November 2006 Q11021, doi:10.1029/2006GC001352 ISSN: 1525-2027Full
Maryland - GEOL - 3
American Mineralogist, Volume 91, pages 14881498, 2006Lithium isotopic systematics of granites and pegmatites from the Black Hills, South DakotaFANG-ZHEN TENG,1,* WILLIAM F. MCDONOUGH,1 ROBERTA L. RUDNICK,1 RICHARD J. WALKER,1 AND MONA-LIZA C. SIR
Maryland - GEOL - 3
Earth and Planetary Science Letters 243 (2006) 701 710 www.elsevier.com/locate/epslDiffusion-driven extreme lithium isotopic fractionation in country rocks of the Tin Mountain pegmatiteFang-Zhen Teng , William F. McDonough, Roberta L. Rudnick, Ri
Maryland - GEOL - 3
Geochimica et Cosmochimica Acta 70 (2006) 15371547 www.elsevier.com/locate/gcaExperimental partitioning of uranium between liquid iron sulde and liquid silicate: Implications for radioactivity in the Earths coreKevin T. Wheeleraa,*, David Wal
Maryland - GEOL - 3
Earth and Planetary Science Letters 237 (2005) 855 872=www.elsevier.com/locate/epslAn experimental study of the solubility and partitioning of iridium, osmium and gold between olivine and silicate meltJames M. Brenan a,*, William F. McDonough
Maryland - GEOL - 3
Marine Geology 217 (2005) 255 265 www.elsevier.com/locate/margeoDetermination of the lithium isotopic composition of planktic foraminifera and its application as a paleo-seawater proxyJenney M. Halla,T, L.-H. Chanb, William F. McDonoughc, Karl K.
Maryland - GEOL - 3
Geochimica et Cosmochimica Acta, Vol. 69, No. 11, pp. 2829 2845, 2005 Copyright 2005 Elsevier Ltd Printed in the USA. All rights reserved 0016-7037/05 $30.00 .00doi:10.1016/j.gca.2005.01.012Kimberlite petrogenesis: Insights from clinopyroxene-me
Maryland - GEOL - 3
Geochimica et Cosmochimica Acta 70 (2006) 34213435 www.elsevier.com/locate/gcaTrace element partitioning between type B CAI melts and melilite and spinel: Implications for trace element distribution during CAI formationC.C. Lundstromaa,*, A.L
Maryland - GEOL - 3
Vol 436|28 July 2005NEWS & VIEWSKAMLAND/LBNLEARTH SCIENCESGhosts from withinWilliam F. McDonough The first detection of geoneutrinos from beneath our feet is a landmark result. It will allow better estimation of the abundances and distributio
Maryland - GEOL - 3
Earth and Planetary Science Letters 230 (2005) 211 226 www.elsevier.com/locate/epsl187Os186Os systematics of OsIrRu alloy grains from southwestern OregonR.J. Walkera,*, A.D. Brandonb, J.M. Birdc, P.M. Piccolia, W.F. McDonougha, R.D. Ashaa Dep
Maryland - GEOL - 3
Lithos 77 (2004) 609 637 www.elsevier.com/locate/lithosPetrology and geochemistry of spinel peridotite xenoliths from Hannuoba and Qixia, North China cratonRoberta L. Rudnick a,*, Shan Gao b,c, Wen-li Ling b, Yong-shen Liu b, William F. McDonough
Maryland - GEOL - 3
JOURNAL OF PETROLOGYVOLUME 45NUMBER 11PAGES 213321532004doi:10.1093/petrology/egh050Late-Stage Mafic Injection and Thermal Rejuvenation of the Vinalhaven Granite, Coastal MaineR. A. WIEBE1*, M. R. MANON2, D. P. HAWKINS3 AND W. F. MCDONOU
Maryland - GEOL - 3
Available online at www.sciencedirect.comREarth and Planetary Science Letters 212 (2003) 135^150 www.elsevier.com/locate/epslExperimental constraints on the partitioning of rhenium and some platinum-group elements between olivine and silicate me
Maryland - GEOL - 3
2.15 Compositional Model for the Earths CoreW. F. McDonough University of Maryland, College Park, USA2.15.1 INTRODUCTION 2.15.2 FIRST-ORDER GEOPHYSICS 2.15.3 CONSTRAINING THE COMPOSITION OF THE EARTHS CORE 2.15.3.1 Observations from Meteorites and
Maryland - GEOL - 3
Chemical Geology 145 1998. 153159Geochemical Earth Reference Model GERM/ : description of the initiativeHubert Staudigel a , Francis Albarede b,) , Janne Blichert-Toft b, John Edmond c , ` d Bill McDonough , Stein B. Jacobsen d , Ralph Keeling e,
Maryland - GEOL - 3
Earth and Planetary Science Letters 208 (2003) 279^290 www.elsevier.com/locate/epslExtremely light Li in orogenic eclogites: The role of isotope fractionation during dehydration in subducted oceanic crust Thomas Zack , Paul B. Tomascak, Roberta L
Maryland - GEOL - 3
Precambrian Research 118 (2002) 267 /283 www.elsevier.com/locate/precamresRe /Os and U /Pb geochronological constraints on the eclogite/tonalite connection in the Archean Man Shield, West AfricaMatthias G. Barth a,1, Roberta L. Rudnick a,1, Richar
Maryland - GEOL - 3
PergamonGeochimica et Cosmochimica Acta, Vol. 66, No. 24, pp. 4325 4345, 2002 Copyright 2002 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/02 $22.00 .00PII S0016-7037(00)01004-9Geochemistry of xenolithic eclogites from
Maryland - GEOL - 3
Earth and Planetary Science Letters 198 (2002) 307^322 www.elsevier.com/locate/epslRe^Os evidence for replacement of ancient mantle lithosphere beneath the North China cratonShan Gao a;b , Roberta L. Rudnick c; , Richard W. Carlson d , William F.
Maryland - GEOL - 3
Chemical Geology 183 (2002) 43 61 www.elsevier.com/locate/chemgeoDepleted melt inclusions in MORB plagioclase: messages from the mantle or mirages from the magma chamber?Peter J. Michael a,*, William F. McDonough b, Roger L. Nielsen c, Winton C.
Maryland - ASTR - 121
ASTR121 Homework #1 (Hamilton) due Thursday Feb. 7 (15 Points)Start this homework by nishing the relevant reading: Chapter 5. I also recommend testing yourself on the Review Questions at the end of each chapter. This is an excellent way to see if y