National Library of Energy BETA

Sample records for age square footage

  1. Justice Square

    E-Print Network [OSTI]

    Deratany, Jay Paul

    2013-01-01

    footage of the REAL FOOTAGE OF NEDA on the ground, bleeding.OF SHOTS - REAL FOOTAGE OF NEDA's BODY IN THE STREET. THE

  2. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    umid",13,2023,1791,1781,753,667,663 "Marine",4.1,2090,1718,523,752,618,188 "Year of Construction" "Before 1940",10.1,2603,1836,963,1002,707,371 "1940 to 1949",3.9,2188,1699,1068,78...

  3. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    s",4.4,849,826,451,441,430,234 "Mobile Homes",0.5,1030,968,711,524,492,362 "Year of Construction" "Before 1940",5.6,1991,1428,573,826,592,238 "1940 to 1949",1.3,1790,1423,589,694,5...

  4. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    ",19.1,849,759,572,440,393,297 "Mobile Homes",6.9,1087,985,746,413,375,283 "Year of Construction" "Before 1940",14.4,2134,1545,772,882,639,319 "1940 to 1949",5.2,1860,1461,895,701,...

  5. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    gs",4.7,811,577,358,379,270,168 "Mobile Homes",1.4,995,867,466,369,322,173 "Year of Construction" "Before 1940",1.9,1646,1077,274,671,439,112 "1940 to 1949",0.9,1496,1054,345,569,4...

  6. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    "Hot-Humid",4,887,740,797,459,383,412 "Marine",2,869,641,83,421,310,40 "Year of Construction" "Before 1940",4.3,1048,871,328,524,436,164 "1940 to 1949",1.3,857,734,365,376,322,...

  7. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    ",3.7,787,752,538,462,441,316 "Mobile Homes",1.1,1090,1069,595,400,392,218 "Year of Construction" "Before 1940",4.6,2546,1909,1019,1067,800,427 "1940 to 1949",1.4,2497,1970,1378,93...

  8. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    ",6.2,916,853,842,481,448,442 "Mobile Homes",3.9,1128,1008,894,423,378,335 "Year of Construction" "Before 1940",2.4,2048,1477,1138,828,597,460 "1940 to 1949",1.6,1539,1254,1019,564...

  9. ,"Housing Units1","Average Square Footage Per Housing Unit",...

    U.S. Energy Information Administration (EIA) Indexed Site

    finished or conditioned (heated or cooled) areas of attics, and conditioned garage space that is attached to the home. Unconditioned and unfinished areas in attics and...

  10. Table 1a. Effective, Occupied, and Vacant Square Footage, 1992

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome6,672 7,2060 0 1 0 0 0a. Occupied and

  11. Augmenting Film and Video Footage with Sensor Data

    E-Print Network [OSTI]

    Su, Norman Makoto

    Augmenting Film and Video Footage with Sensor Data Norman Makoto Su, Heemin Park , Eric Bostrom of Electrical Engineering, School of Theater, Film and Television University of California, Los Angeles normsu application of sensor networks to the film industry. In particular, we are interested in augmenting film

  12. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf Coast0

  13. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf

  14. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf2

  15. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf23

  16. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf234

  17. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf2345

  18. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf23456

  19. ,"Housing Units1","Average Square Footage Per Housing Unit",,,"Average Square Footage Per Household Member"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1 HomeRegional37Annual* jGulf234569

  20. Footage Drilled for Crude Oil and Natural Gas Wells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) |FinalIndustrialFollowing the Technical CareerFootage

  1. Footage Drilled for Crude Oil and Natural Gas Wells

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural GasEIA lowers 2015Values shownFootage Drilled for

  2. Effective Occupied and Vacant Square Footage in Commercial Buildigs in 1992

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969Central RegionReporting GuidelinesFeet) YearEffective

  3. OCEAN VOLCANO CAUGHT ON FILM Footage of a volcanic eruption nearly 1,200 metres under the sea was unveiled on 17 December at a meeting of

    E-Print Network [OSTI]

    Rosenberg, Noah

    OCEAN VOLCANO CAUGHT ON FILM Footage of a volcanic eruption nearly 1,200 metres under the sea. The high-definition film of the West Mata volcano in the western Pacific is one of the first times to raise up to US$300 million. Founded in 2005, Solyndra makes thin- film cylindrical modules for use

  4. Annual Report 2014 -2015

    E-Print Network [OSTI]

    energy use per square foot by 4% since 2010 despite increases in population and square footage (10% and 6

  5. Redevelopment and smart growth at Assembly Square

    E-Print Network [OSTI]

    Savage, Alice (Alice Augusta)

    2006-01-01

    The story of Assembly Square is not yet finished. To tell the complete story of Assembly Square would require much more time to write than I had, and more time to read than the reader would likely care to devote. An earlier ...

  6. ROBOT CALIBRATION USING LEAST-SQUARES AND

    E-Print Network [OSTI]

    Flanagan, Randy

    ROBOT CALIBRATION USING LEAST-SQUARES AND P OLAR-DEC OMP O SITION FILTERING Gregory Ioannldes 1-axis robotic manipulators. The method proposed by the authors is based on a least-square estimation of the Yaskawa Motoman Robot was calibrated. The measurements of the Cartesian coordinates of points were

  7. Hidden Risks In The CDO - Squared Market 

    E-Print Network [OSTI]

    Adams, Andrew T; Clunie, James; Bhatt, Rajiv

    2005-01-01

    We show that there are risks (default location risk and overlap risk) unique to CDO-squared structures. These risks may not be well-understood by investors and credit rating agencies. As a result, the tranche of a CDO-squared ...

  8. Elmo bumpy square plasma confinement device

    DOE Patents [OSTI]

    Owen, L.W.

    1985-01-01

    The invention is an Elmo bumpy type plasma confinement device having a polygonal configuration of closed magnet field lines for improved plasma confinement. In the preferred embodiment, the device is of a square configuration which is referred to as an Elmo bumpy square (EBS). The EBS is formed by four linear magnetic mirror sections each comprising a plurality of axisymmetric assemblies connected in series and linked by 90/sup 0/ sections of a high magnetic field toroidal solenoid type field generating coils. These coils provide corner confinement with a minimum of radial dispersion of the confined plasma to minimize the detrimental effects of the toroidal curvature of the magnetic field. Each corner is formed by a plurality of circular or elliptical coils aligned about the corner radius to provide maximum continuity in the closing of the magnetic field lines about the square configuration confining the plasma within a vacuum vessel located within the various coils forming the square configuration confinement geometry.

  9. The Individualist Court: Naked Public School, Clothed Public Square

    E-Print Network [OSTI]

    Weissenberg, Brian Michael

    2012-01-01

    Bradley, G. V. (2009). The Public Square: Naked No More? InC. Wolfe, The Naked Public Square Reconsidered (pp. 1-31).56. Glendon, M. A. (2009). The Naked Public Square Today: A

  10. The Square Root Depth Wave Equations

    E-Print Network [OSTI]

    Colin C. Cotter; Darryl D. Holm; James R. Percival

    2009-12-11

    We introduce a set of coupled equations for multilayer water waves that removes the ill-posedness of the multilayer Green-Naghdi (MGN) equations in the presence of shear. The new well-posed equations are Hamiltonian and in the absence of imposed background shear they retain the same travelling wave solutions as MGN. We call the new model the Square Root Depth equations, from the modified form of their kinetic energy of vertical motion. Our numerical results show how the Square Root Depth equations model the effects of multilayer wave propagation and interaction, with and without shear.

  11. Least Squares : MotivationLeast Squares : Motivation SDA/LMS assume a probabilistic model underlying the

    E-Print Network [OSTI]

    Santhanam, Balu

    Least Squares : MotivationLeast Squares : Motivation SDA/LMS assume a probabilistic model underlying the optimal filtering problem. SDA/LMS assume access to ensemble statistics and multiple realizations. SDA/LMS assume ergodicity in the absence of multiple realizations. SDA/LMS speed of convergence

  12. The Group of symmetries of a square There are eight symmetries of a square

    E-Print Network [OSTI]

    Smith, Karen E.

    The Group of symmetries of a square There are eight symmetries of a square: e = no motion r1) a product of two of its subgroups? 5. How many different (non-isomorphic) groups of order eight can you) a = reflection over anti-diagonal (the line y = -x) Complete the Cayley Table for the dihedral group D4: e r1 r2

  13. Least square fitting with one parameter less

    E-Print Network [OSTI]

    Bernd A. Berg

    2015-05-28

    It is shown that whenever the multiplicative normalization of a fitting function is not known, least square fitting by $\\chi^2$ minimization can be performed with one parameter less than usual by converting the normalization parameter into a function of the remaining parameters and the data.

  14. Robust Least Square Semidefinite Programming with Applications

    E-Print Network [OSTI]

    2013-07-14

    Jul 13, 2013 ... In this paper, we consider a least square semidefinite programming problem .... and handling uncertainty, and has natural statistical interpretation. On .... of the paper, we use B(X, r) ? Sn to denote the closed ball centered at X ...

  15. Principle of Least Squares Regression Equations Residuals Correlation and Regression

    E-Print Network [OSTI]

    Watkins, Joseph C.

    Principle of Least Squares Regression Equations Residuals Topic 3 Correlation and Regression Linear Regression I 1 / 15 #12;Principle of Least Squares Regression Equations Residuals Outline Principle of Least Squares Regression Equations Residuals 2 / 15 #12;Principle of Least Squares Regression Equations

  16. INVERSE-SQUARE LAW TESTS 1 TESTS OF THE GRAVITATIONAL

    E-Print Network [OSTI]

    Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

    INVERSE-SQUARE LAW TESTS 1 TESTS OF THE GRAVITATIONAL INVERSE-SQUARE LAW E.G.Adelberger, B-1560 KEYWORDS: gravitation, experimental tests of inverse-square law, quantum gravity, extra dimensions ABSTRACT: We review recent experimental tests of the gravitational inverse-square law, and the wide variety

  17. B-Roll Footage | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center HomeVehicle Replacement U.S. Residential54 Cost ofNews & Blog »

  18. Ordering and Dynamics of Vibrated Hard Squares

    E-Print Network [OSTI]

    Lee Walsh; Narayanan Menon

    2015-10-02

    We study an experimental system of hard granular squares in two dimensions, energized by vibration. The interplay of order in the orientations and positions of anisotropic particles allows for a rich set of phases. We measure the structure and dynamics of steady states as a function of particle density. This allows us to identify a progression of phases in which a low density isotropic fluid gives way to a phase with tetratic orientational order, short-range translational correlations, and slowed rotational dynamics. In this range of density we also observe a coupling between the orientational order and bond-orientational order. At higher densities, the particles freeze into a translationally and orientationally ordered square crystalline phase in which translational diffusion is suppressed.

  19. The Spanish Square Kilometre Array White Book

    E-Print Network [OSTI]

    Pulido, J A Acosta; Alberdi, A; Alcolea, J; Alfaro, E J; Alonso-Herrero, A; Anglada, G; Arnalte-Mur, P; Ascasibar, Y; Ascaso, B; Azulay, R; Bachiller, R; Baez-Rubio, A; Battaner, E; Blasco, J; Brook, C B; Bujarrabal, V; Busquet, G; Caballero-Garcia, M D; Carrasco-Gonzalez, C; Casares, J; Castro-Tirado, A J; Colina, L; Colomer, F; de Gregorio-Monsalvo, I; del Olmo, A; Desmurs, J-F; Diego, J M; Dominguez-Tenreiro, R; Estalella, R; Fernandez-Soto, A; Florido, E; Font, J; Font, J A; Fuente, A; Garcia-Burillo, S; Garcia-Benito, R; Garcia-Lorenzo, B; de Paz, A Gil; Girart, J M; Goicoechea, J R; Gomez, J F; Gonzalez-Garcia, M; Gonzalez-Martin, O; Gonzalez-Serrano, J I; Gorgas, J; Gorosabel, J; Guijarro, A; Guirado, J C; Hernandez-Garcia, L; Hernandez-Monteagudo, C; Herranz, D; Herrero-Illana, R; Hu, Y-D; Huelamo, N; Huertas-Company, M; Iglesias-Paramo, J; Jeong, S; Jimenez-Serra, I; Knapen, J H; Lineros, R A; Lisenfeld, U; Marcaide, J M; Marquez, I; Marti, J; Marti, J M; Martinez-Gonzalez, E; Martin-Pintado, J; Marti-Vidal, I; Masegosa, J; Mayen-Gijon, J M; Mezcua, M; Mimica, S/ Migliari P; Moldon, J; Morata, O; Negueruela, I; Oates, S R; Osorio, M; Palau, A; Paredes, J M; Perea, J; Perez-Gonzalez, P G; Perez-Montero, E; Perez-Torres, M A; Perucho, M; Planelles, S; Pons, J A; Prieto, A; Quilis, V; Ramirez-Moreta, P; Almeida, C Ramos; Rea, N; Ribo, M; Rioja, M J; Espinosa, J M Rodriguez; Ros, E; Rubiño-Martin, J A; Ruiz-Granados, B; Sabater, J; Sanchez, M A P; Usero, A; Verdes-Montenegro, L; Vidal-Garcia, A; Vielva, P; Vilchez, J; Zhang, B-B

    2015-01-01

    The Square Kilometre Array (SKA) is called to revolutionise essentially all areas of Astrophysics. With a collecting area of about a square kilometre, the SKA will be a transformational instrument, and its scientific potential will go beyond the interests of astronomers. Its technological challenges and huge cost requires a multinational effort, and Europe has recognised this by putting the SKA on the roadmap of the European Strategy Forum for Research Infrastructures (ESFRI). The Spanish SKA White Book is the result of the coordinated effort of 119 astronomers from 40 different research centers. The book shows the enormous scientific interest of the Spanish astronomical community in the SKA and warrants an optimum scientific exploitation of the SKA by Spanish researchers, if Spain enters the SKA project.

  20. Hybrid least squares multivariate spectral analysis methods

    DOE Patents [OSTI]

    Haaland, David M. (Albuquerque, NM)

    2002-01-01

    A set of hybrid least squares multivariate spectral analysis methods in which spectral shapes of components or effects not present in the original calibration step are added in a following estimation or calibration step to improve the accuracy of the estimation of the amount of the original components in the sampled mixture. The "hybrid" method herein means a combination of an initial classical least squares analysis calibration step with subsequent analysis by an inverse multivariate analysis method. A "spectral shape" herein means normally the spectral shape of a non-calibrated chemical component in the sample mixture but can also mean the spectral shapes of other sources of spectral variation, including temperature drift, shifts between spectrometers, spectrometer drift, etc. The "shape" can be continuous, discontinuous, or even discrete points illustrative of the particular effect.

  1. Optical inverse-square displacement sensor

    DOE Patents [OSTI]

    Howe, R.D.; Kychakoff, G.

    1989-09-12

    This invention comprises an optical displacement sensor that uses the inverse-square attenuation of light reflected from a diffused surface to calculate the distance from the sensor to the reflecting surface. Light emerging from an optical fiber or the like is directed onto the surface whose distance is to be measured. The intensity I of reflected light is angle dependent, but within a sufficiently small solid angle it falls off as the inverse square of the distance from the surface. At least a pair of optical detectors are mounted to detect the reflected light within the small solid angle, their ends being at different distances R and R + [Delta]R from the surface. The distance R can then be found in terms of the ratio of the intensity measurements and the separation length as given in an equation. 10 figs.

  2. Transient Astrophysics with the Square Kilometre Array

    E-Print Network [OSTI]

    Fender, Rob; Macquart, Jean-Pierre; Donnarumma, Immacolata; Murphy, Tara; Deller, Adam; Paragi, Zsolt; Chatterjee, Shami

    2015-01-01

    This chapter provides an overview of the possibilities for transient and variable-source astrophysics with the Square Kilometre Array. While subsequent chapters focus on the astrophysics of individual events, we focus on the broader picture, and how to maximise the science coming from the telescope. The SKA as currently designed will be a fantastic and ground-breaking facility for radio transient studies, but the scientifc yield will be dramatically increased by the addition of (i) near-real-time commensal searches of data streams for events, and (ii) on occasion, rapid robotic response to Target-of-Opprtunity style triggers.

  3. Solar Energy Squared, LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS ReportEurope GmbH JumpSlough HeatMccoyProject-EnergySquared, LLC Jump

  4. Every Square Inch: The Fight for the California Desert

    E-Print Network [OSTI]

    Argandona, Monica

    2012-01-01

    and James B. Greenberg. "Fight for the West: A PoliticalEvery Square Inch: The Fight for the California Desert AEvery Square Inch: A Fight for the California Desert by

  5. Augmented Classical Least Squares Multivariate Spectral Analysis

    DOE Patents [OSTI]

    Haaland, David M. (Albuquerque, NM); Melgaard, David K. (Albuquerque, NM)

    2005-01-11

    A method of multivariate spectral analysis, termed augmented classical least squares (ACLS), provides an improved CLS calibration model when unmodeled sources of spectral variation are contained in a calibration sample set. The ACLS methods use information derived from component or spectral residuals during the CLS calibration to provide an improved calibration-augmented CLS model. The ACLS methods are based on CLS so that they retain the qualitative benefits of CLS, yet they have the flexibility of PLS and other hybrid techniques in that they can define a prediction model even with unmodeled sources of spectral variation that are not explicitly included in the calibration model. The unmodeled sources of spectral variation may be unknown constituents, constituents with unknown concentrations, nonlinear responses, non-uniform and correlated errors, or other sources of spectral variation that are present in the calibration sample spectra. Also, since the various ACLS methods are based on CLS, they can incorporate the new prediction-augmented CLS (PACLS) method of updating the prediction model for new sources of spectral variation contained in the prediction sample set without having to return to the calibration process. The ACLS methods can also be applied to alternating least squares models. The ACLS methods can be applied to all types of multivariate data.

  6. Augmented Classical Least Squares Multivariate Spectral Analysis

    DOE Patents [OSTI]

    Haaland, David M. (Albuquerque, NM); Melgaard, David K. (Albuquerque, NM)

    2005-07-26

    A method of multivariate spectral analysis, termed augmented classical least squares (ACLS), provides an improved CLS calibration model when unmodeled sources of spectral variation are contained in a calibration sample set. The ACLS methods use information derived from component or spectral residuals during the CLS calibration to provide an improved calibration-augmented CLS model. The ACLS methods are based on CLS so that they retain the qualitative benefits of CLS, yet they have the flexibility of PLS and other hybrid techniques in that they can define a prediction model even with unmodeled sources of spectral variation that are not explicitly included in the calibration model. The unmodeled sources of spectral variation may be unknown constituents, constituents with unknown concentrations, nonlinear responses, non-uniform and correlated errors, or other sources of spectral variation that are present in the calibration sample spectra. Also, since the various ACLS methods are based on CLS, they can incorporate the new prediction-augmented CLS (PACLS) method of updating the prediction model for new sources of spectral variation contained in the prediction sample set without having to return to the calibration process. The ACLS methods can also be applied to alternating least squares models. The ACLS methods can be applied to all types of multivariate data.

  7. Augmented classical least squares multivariate spectral analysis

    DOE Patents [OSTI]

    Haaland, David M.; Melgaard, David K.

    2004-02-03

    A method of multivariate spectral analysis, termed augmented classical least squares (ACLS), provides an improved CLS calibration model when unmodeled sources of spectral variation are contained in a calibration sample set. The ACLS methods use information derived from component or spectral residuals during the CLS calibration to provide an improved calibration-augmented CLS model. The ACLS methods are based on CLS so that they retain the qualitative benefits of CLS, yet they have the flexibility of PLS and other hybrid techniques in that they can define a prediction model even with unmodeled sources of spectral variation that are not explicitly included in the calibration model. The unmodeled sources of spectral variation may be unknown constituents, constituents with unknown concentrations, nonlinear responses, non-uniform and correlated errors, or other sources of spectral variation that are present in the calibration sample spectra. Also, since the various ACLS methods are based on CLS, they can incorporate the new prediction-augmented CLS (PACLS) method of updating the prediction model for new sources of spectral variation contained in the prediction sample set without having to return to the calibration process. The ACLS methods can also be applied to alternating least squares models. The ACLS methods can be applied to all types of multivariate data.

  8. March 2, 2015 Lecture 9 Least Square Problems

    E-Print Network [OSTI]

    Sleijpen, Gerard

    -inverse of A. In particular, the minimal norm minimal residual solution exists. (d) Damped least squares: b to the ones of the original matrix? (b) Explain why the damped least squares problem is less sensitive to noise. (c) The error in x in the damped least square problem (with noise on b) has two components, one

  9. Aging gauge

    DOE Patents [OSTI]

    Betts, Robert E. (Huntsville, AL); Crawford, John F. (Huntsville, AL)

    1989-01-01

    An aging gauge comprising a container having a fixed or a variable sized t opening with a cap which can be opened to control the sublimation rate of a thermally sublimational material contained within the container. In use, the aging gauge is stored with an item to determine total heat the item is subjected to and also the maximum temperature to which the item has been exposed. The aging gauge container contains a thermally sublimational material such as naphthalene or similar material which has a low sublimation rate over the temperature range from about 70.degree. F. to about 160.degree. F. The aging products determined by analyses of a like item aged along with the aging gauge for which the sublimation amount is determined is employed to establish a calibration curve for future aging evaluation. The aging gauge is provided with a means for determining the maximum temperature exposure (i.e., a thermally indicating material which gives an irreversible color change, Thermocolor pigment). Because of the relationship of doubling reaction rates for increases of 10.degree. C., equivalency of item used in accelerated aging evaluation can be obtained by referring to a calibration curve depicting storage temperature on the abscissa scale and multiplier on the ordinate scale.

  10. AGING GAUGE

    DOE Patents [OSTI]

    Betts, Robert E.; Crawford, John F.

    1989-04-04

    An aging gauge comprising a container having a fixed or a variable sized t opening with a cap which can be opened to control the sublimation rate of a thermally sublimational material contained within the container. In use, the aging gauge is stored with an item to determine total heat the item is subjected to and also the maximum temperature to which the item has been exposed. The aging gauge container contains a thermally sublimational material such as naphthalene or similar material which has a low sublimation rate over the temperature range from about 70.degree. F. to about 160.degree. F. The aging products determined by analyses of a like item aged along with the aging gauge for which the sublimation amount is determined is employed to establish a calibration curve for future aging evaluation. The aging gauge is provided with a means for determining the maximum temperature exposure (i.e., a thermally indicating material which gives an irreversible color change, Thermocolor pigment). Because of the relationship of doubling reaction rates for increases of 10.degree. C., equivalency of item used in accelerated aging evaluation can be obtained by referring to a calibration curve depicting storage temperature on the abscissa scale and multiplier on the ordinate scale.

  11. Hybrid least squares multivariate spectral analysis methods

    DOE Patents [OSTI]

    Haaland, David M.

    2004-03-23

    A set of hybrid least squares multivariate spectral analysis methods in which spectral shapes of components or effects not present in the original calibration step are added in a following prediction or calibration step to improve the accuracy of the estimation of the amount of the original components in the sampled mixture. The hybrid method herein means a combination of an initial calibration step with subsequent analysis by an inverse multivariate analysis method. A spectral shape herein means normally the spectral shape of a non-calibrated chemical component in the sample mixture but can also mean the spectral shapes of other sources of spectral variation, including temperature drift, shifts between spectrometers, spectrometer drift, etc. The shape can be continuous, discontinuous, or even discrete points illustrative of the particular effect.

  12. Classical least squares multivariate spectral analysis

    DOE Patents [OSTI]

    Haaland, David M. (Albuquerque, NM)

    2002-01-01

    An improved classical least squares multivariate spectral analysis method that adds spectral shapes describing non-calibrated components and system effects (other than baseline corrections) present in the analyzed mixture to the prediction phase of the method. These improvements decrease or eliminate many of the restrictions to the CLS-type methods and greatly extend their capabilities, accuracy, and precision. One new application of PACLS includes the ability to accurately predict unknown sample concentrations when new unmodeled spectral components are present in the unknown samples. Other applications of PACLS include the incorporation of spectrometer drift into the quantitative multivariate model and the maintenance of a calibration on a drifting spectrometer. Finally, the ability of PACLS to transfer a multivariate model between spectrometers is demonstrated.

  13. HI Science with the Square Kilometre Array

    E-Print Network [OSTI]

    Staveley-Smith, Lister

    2015-01-01

    The Square Kilometre Array (SKA) will be a formidable instrument for the detailed study of neutral hydrogen (HI) in external galaxies and in our own Galaxy and Local Group. The sensitivity of the SKA, its wide receiver bands, and the relative freedom from radio frequency interference at the SKA sites will allow the imaging of substantial number of high-redshift galaxies in HI for the first time. It will also allow imaging of galaxies throughout the Local Volume at resolutions of <100 pc and detailed investigations of galaxy disks and the transition between disks, halos and the intergalactic medium (IGM) in the Milky Way and external galaxies. Together with deep optical and millimetre/sub-mm imaging, this will have a profound effect on our understanding of the formation, growth and subsequent evolution of galaxies in different environments. This paper provides an introductory text to a series of nine science papers describing the impact of the SKA in the field of HI and galaxy evolution. We propose a nested...

  14. 2-D weighted least-squares phase unwrapping

    DOE Patents [OSTI]

    Ghiglia, Dennis C. (Placitas, NM); Romero, Louis A. (Albuquerque, NM)

    1995-01-01

    Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals.

  15. 2-D weighted least-squares phase unwrapping

    DOE Patents [OSTI]

    Ghiglia, D.C.; Romero, L.A.

    1995-06-13

    Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals. 6 figs.

  16. FIRST-ORDER SYSTEM LEAST SQUARES FOR SECOND-ORDER ...

    E-Print Network [OSTI]

    convection–diffusion–reaction equations in a unified way and also admits an efficient. multilevel solver, historically a missing ingredient in least-squares ...

  17. Derivation of the coefficient squared probability law in quantum mechanics

    E-Print Network [OSTI]

    Casey Blood

    2013-06-02

    If one assumes there is probability of perception in quantum mechanics, then unitarity dictates that it must have the coefficient squared form, in agreement with experiment.

  18. Cosmology with the Square Kilometre Array

    E-Print Network [OSTI]

    Chris Blake; Filipe Abdalla; Sarah Bridle; Steve Rawlings

    2004-09-13

    We argue that the Square Kilometre Array has the potential to make both redshift (HI) surveys and radio continuum surveys that will revolutionize cosmological studies, provided that it has sufficient instantaneous field-of-view that these surveys can cover a hemisphere in a timescale ~1 yr. Adopting this assumption, we focus on two key experiments which will yield fundamental new measurements in cosmology, characterizing the properties of the mysterious dark energy which dominates the dynamics of today's Universe. Experiment I will map out ~10^9 HI galaxies to redshift z~1.5, providing the premier measurement of the clustering power spectrum of galaxies: accurately delineating the acoustic oscillations and the `turnover'. Experiment II will quantify the cosmic shear distortion of ~10^10 radio continuum sources, determining a precise power spectrum of the dark matter, and its growth as a function of cosmic epoch. We contrast the performance of the SKA in precision cosmology with that of other facilities which will, probably or possibly, be available on a similar timescale. We conclude that data from the SKA will yield transformational science as the direct result of four key features: (i) the immense cosmic volumes probed, exceeding future optical redshift surveys by more than an order of magnitude; (ii) well-controlled systematic effects such as the narrow `k-space window function' for Experiment I and the accurately-known `point-spread function' for Experiment II; (iii) the ability to measure with high precision large-scale modes in the clustering power spectra, for which nuisance effects such as non-linear structure growth, peculiar velocities and `galaxy bias' are minimised; and (iv) different degeneracies between key parameters to those which are inherent in the CMB.

  19. Characterization of some binary words with few squares Golnaz Badkobeha

    E-Print Network [OSTI]

    Ochem, Pascal

    Characterization of some binary words with few squares Golnaz Badkobeha , Pascal Ochemb a smaller morphisms to define these two square-free morphic words and we give such characterizations for six of patterns, and a finite set F of factors over k, we say that P F characterizes a morphic word w over k if w

  20. TheSquareKilometreArray ProjectDescriptionforAstro2010

    E-Print Network [OSTI]

    Groppi, Christopher

    TheSquareKilometreArray ProjectDescriptionforAstro2010 ResponsetoProgramPrioritizationPanels 1Campbell,Director,NAIC FredLo,Director,NRAO #12;1 Summary The Square Kilometre Array (SKA) is a revolutionary telescope for phased deployment. Phase 1 comprising low-and-mid frequency arrays will be funding-ready early next

  1. The Parents of Jacobi's Four Squares Theorem Are Unique

    E-Print Network [OSTI]

    Williams, Kenneth Stuart

    The Parents of Jacobi's Four Squares Theorem Are Unique Kenneth S. Williams Abstract. Jacobi's four-to-sum identities in a single complex variable q from which Jacobi's four squares formula can be deduced by equating such identities are known. Perhaps the most famous product-to-sum identity was given by Jacobi in 1829, in his

  2. Random Disease on the Square Grid J ozsef Balogh

    E-Print Network [OSTI]

    Balogh, Jozsef

    a disease process. The initial configuration is called contagious or successful if the corresponding) squares in a contagious configuration. The solution of the initial exercise is the following: Fact. [Folklore] G(n) = n. Proof. If we paint the squares of a diagonal black, it will be a contagious

  3. The distribution of prime numbers on the square root spiral

    E-Print Network [OSTI]

    Harry K. Hahn; Robert Sachs

    2008-01-09

    Prime Numbers clearly accumulate on defined spiral graphs,which run through the Square Root Spiral. These spiral graphs can be assigned to different spiral-systems, in which all spiral-graphs have the same direction of rotation and the same -second difference- between the numbers, which lie on these spiral-graphs. A mathematical analysis shows, that these spiral graphs are caused exclusively by quadratic polynomials. For example the well known Euler Polynomial x2+x+41 appears on the Square Root Spiral in the form of three spiral-graphs, which are defined by three different quadratic polynomials. All natural numbers,divisible by a certain prime factor, also lie on defined spiral graphs on the Square Root Spiral (or Spiral of Theodorus, or Wurzelspirale). And the Square Numbers 4, 9, 16, 25, 36 even form a highly three-symmetrical system of three spiral graphs, which divides the square root spiral into three equal areas. Fibonacci number sequences also play a part in the structure of the Square Root Spiral. With the help of the Number-Spiral, described by Mr. Robert Sachs, a comparison can be drawn between the Square Root Spiral and the Ulam Spiral. The shown sections of his study of the number spiral contain diagrams, which are related to my analysis results, especially in regards to the distribution of prime numbers.

  4. SQUARE SUMMABLE POWER SERIES Louis de Branges Preface ...

    E-Print Network [OSTI]

    1911-01-10

    The space C(z) of square summable power series is the set of power series ...... model of the linear system is constructed in a Hilbert space of power series with ...

  5. Recollecting history : songs, flags and a Syrian square

    E-Print Network [OSTI]

    Sergie, Lina, 1974-

    2003-01-01

    Symbols have played a major role in the development of a Syrian national identity since the beginning of the 20th century. These representations are national, official, and/or public (flag, song, and square), that are ...

  6. An improved method for weighted least squares IIR filter design 

    E-Print Network [OSTI]

    Davila-Pazmino, Javier

    1999-01-01

    Recently, a new method for IIR weighted least squares filter design has been proposed. In this method, the problem of approximating a desired frequency response using a rational function is solved using an iterative approach. ...

  7. Square Root of Metric: The Geometry Background of Unified Theory?

    E-Print Network [OSTI]

    De-Sheng Li

    2015-09-29

    We use the square root of inverse metric described by $l=u^{\\dagger} \\gamma^{a} u \\theta_{a}$ construct an $U(4)$ gauge invariant, locally Lorentz invariant and generally covariant Lagrangian $\\mathcal{L}=\

  8. Tests of the Gravitational Inverse-Square Law

    E-Print Network [OSTI]

    E. G. Adelberger; B. R. Heckel; A. E. Nelson

    2003-07-22

    We review recent experimental tests of the gravitational inverse-square law and the wide variety of theoretical considerations that suggest the law may break down in experimentally accessible regions.

  9. Least Soft-thresold Squares Tracking Dalian University of Technology

    E-Print Network [OSTI]

    Yang, Ming-Hsuan

    Least Soft-thresold Squares Tracking Dong Wang Dalian University of Technology wangdong.ice@gmail.com Huchuan Lu Dalian University of Technology lhchuan@dlut.edu.cn Ming-Hsuan Yang University of California

  10. Community, space, and performance : a public stage in Central Square

    E-Print Network [OSTI]

    De Sola, David Theodore

    1995-01-01

    In this thesis I strive to explore the question, "what is good architecture?" through the design of a facility for formal and informal musical and theatrical performance. The site for this project is in Central Square, ...

  11. 2D barrier in a superconducting niobium square

    SciTech Connect (OSTI)

    Joya, Miryam R. Barba-ortega, J.; Sardella, Edson

    2014-11-05

    The presence of barriers changes the vortex structure in superconducting Nb square in presence of a uniform applied magnetic field. The Cooper pair configurations in a mesoscopics superconducting square of Nb with a barrier are calculated within the nonlinear Ginzburg Landau equations. We predict the nucleation of multi-vortex states into the sample and a soft entry of the magnetic field inside and around into the barrier. A novel and non-conventional vortex configurations occurs at determined magnetic field.

  12. Aging in American Convents

    E-Print Network [OSTI]

    Corwin, Anna I.

    2009-01-01

    Schuster. Snowdon, David 2001 Aging with Grace: What the Nunreligion, devotion, and aging. CSW JAN09 update tocAging in American Convents FIELDWORK REPORT by Anna I.

  13. A Least-Squares Transport Equation Compatible with Voids

    SciTech Connect (OSTI)

    Hansen, Jon [Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering; Peterson, Jacob [Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering; Morel, Jim [Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering; Ragusa, Jean [Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering; Wang, Yaqi [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2014-12-01

    Standard second-order self-adjoint forms of the transport equation, such as the even-parity, odd-parity, and self-adjoint angular flux equation, cannot be used in voids. Perhaps more important, they experience numerical convergence difficulties in near-voids. Here we present a new form of a second-order self-adjoint transport equation that has an advantage relative to standard forms in that it can be used in voids or near-voids. Our equation is closely related to the standard least-squares form of the transport equation with both equations being applicable in a void and having a nonconservative analytic form. However, unlike the standard least-squares form of the transport equation, our least-squares equation is compatible with source iteration. It has been found that the standard least-squares form of the transport equation with a linear-continuous finite-element spatial discretization has difficulty in the thick diffusion limit. Here we extensively test the 1D slab-geometry version of our scheme with respect to void solutions, spatial convergence rate, and the intermediate and thick diffusion limits. We also define an effective diffusion synthetic acceleration scheme for our discretization. Our conclusion is that our least-squares Sn formulation represents an excellent alternative to existing second-order Sn transport formulations

  14. Organic light-emitting diodes from homoleptic square planar complexes

    SciTech Connect (OSTI)

    Omary, Mohammad A

    2013-11-12

    Homoleptic square planar complexes [M(N.LAMBDA.N).sub.2], wherein two identical N.LAMBDA.N bidentate anionic ligands are coordinated to the M(II) metal center, including bidentate square planar complexes of triazolates, possess optical and electrical properties that make them useful for a wide variety of optical and electrical devices and applications. In particular, the complexes are useful for obtaining white or monochromatic organic light-emitting diodes ("OLEDs"). Improved white organic light emitting diode ("WOLED") designs have improved efficacy and/or color stability at high brightness in single- or two-emitter white or monochrome OLEDs that utilize homoleptic square planar complexes, including bis[3,5-bis(2-pyridyl)-1,2,4-triazolato]platinum(II) ("Pt(ptp).sub.2").

  15. High-frequency matrix converter with square wave input

    DOE Patents [OSTI]

    Carr, Joseph Alexander; Balda, Juan Carlos

    2015-03-31

    A device for producing an alternating current output voltage from a high-frequency, square-wave input voltage comprising, high-frequency, square-wave input a matrix converter and a control system. The matrix converter comprises a plurality of electrical switches. The high-frequency input and the matrix converter are electrically connected to each other. The control system is connected to each switch of the matrix converter. The control system is electrically connected to the input of the matrix converter. The control system is configured to operate each electrical switch of the matrix converter converting a high-frequency, square-wave input voltage across the first input port of the matrix converter and the second input port of the matrix converter to an alternating current output voltage at the output of the matrix converter.

  16. Quantum dynamics of relativistic bosons through nonminimal vector square potentials

    E-Print Network [OSTI]

    de Oliveira, Luiz P

    2016-01-01

    The dynamics of relativistic scalar bosons through nonminimal vector square (well and barrier) potentials is studied in the Duffin-Kemmer-Petiau (DKP) formalism. We show that the problem can be mapped in effective Schrodinger equations for a component of the DKP spinor. An oscillatory transmission coefficient is found and there is total reflection. Additionally, the energy spectrum of bound states is obtained and reveals the Schiff-Snyder-Weinberg effect, for specific conditions the potential lodges bound states of particles and antiparticles. Comments about the vector bosons problem subject to square potentials are present.

  17. Surface Mean-Square Amplitudes of Vibration for Nacl 

    E-Print Network [OSTI]

    CHEN, TS; Alldredg, GP; Allen, Roland E.; WETTE, FWD.

    1972-01-01

    " in low-energy electron diffraction (LEED). In the present paper we report calculations of the mean-square ampli- tudes and mean-square velocities for the (100) surface of NaC1. We will distinguish the Na' and Cl ions by a la- bel w and use a label... expressions coth[If&o, (j)/2ks T] ~,(q) x coth h'tc (q) 'l B M? is the mass of an ion labeled by w, N is the number of values of the two-dimensional wave vec- tor q in the summation, P is a label which distin- guishes the different vibrational modes...

  18. Digitally controlled low frequency square wave electronic ballast

    E-Print Network [OSTI]

    , and the Boost converter is commonly used. However the boost output DC voltage has to be set to be greater tha and the second is a full-bridge converter (FB) used for both ignition and square wave drive. Ignition is achieved as a resonant inverter. After ignition the converter operates as a LFSW inverter by controlling the FB to act

  19. An Oblivious Transfer Protocol with Log-Squared Communication

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    An Oblivious Transfer Protocol with Log-Squared Communication Helger Lipmaa 1 Cybernetica AS, Lai 6-computation and communication (k · log2 n + · log n), where k is a possibly non-constant security parameter. The new proto- col communication and is private in the standard complexity-theoretic model. Keywords. Computationally

  20. An Oblivious Transfer Protocol with LogSquared Communication

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    An Oblivious Transfer Protocol with Log­Squared Communication Helger Lipmaa 1 Cybernetica AS, Lai 6­computation and communication #(k · log 2 n + # · log n), where k is a possibly non­constant security parameter. The new proto the same asymptotic communication and is private in the standard complexity­theoretic model. Keywords

  1. Kronecker Square Roots and The Block vec Matrix

    E-Print Network [OSTI]

    Ignacio Ojeda

    2013-11-09

    Using the block vec matrix, I give a necessary and sufficient condition for factorization of a matrix into the Kronecker product of two other matrices. As a consequence, I obtain an elementary algorithmic procedure to decide whether a matrix has a square root for the Kronecker product.

  2. Rectilinear Glass-Cut Dissections of Rectangles to Squares

    E-Print Network [OSTI]

    Urrutia, Jorge

    Rectilinear Glass-Cut Dissections of Rectangles to Squares Jurek Czyzowicz§ czyzowic is made using only rectilinear glass-cuts, i.e., vertical or horizontal straight-line cuts separating pieces into two. 1 Introduction A glass-cut of a rectangle is a cut by a straight-line segment

  3. On efficient estimation of densities for sums of squared observations

    E-Print Network [OSTI]

    Schick, Anton

    On efficient estimation of densities for sums of squared observations Anton Schick and Wolfgang for each i = 1, . . . , m. Under appropriate functional versions of these conditions, Schick and Wefelmeyer function spaces. The research of Anton Schick was partially supported by NSF Grant DMS 0906551. 1 #12

  4. Latin-square three-dimensional gage master

    DOE Patents [OSTI]

    Jones, L.

    1981-05-12

    A gage master for coordinate measuring machines has an nxn array of objects distributed in the Z coordinate utilizing the concept of a Latin square experimental design. Using analysis of variance techniques, the invention may be used to identify sources of error in machine geometry and quantify machine accuracy.

  5. LEAST-SQUARES METHODS FOR LINEAR ELASTICITY 1 ...

    E-Print Network [OSTI]

    SIAM (#1) 1035 2001 Apr 10 12:32:38

    2004-06-03

    not degrade when the material properties approach the incompressible limit. Least-squares ..... the energy norm is equivalent to the H1 norm for a fixed ?. ... of the displacement has a different scale from the displacement itself for large ?. 3. ..... Nevertheless, there may be a possible reluctance in the engineering community.

  6. Least-Squares Analysis of Short-Term Selection Experiments

    E-Print Network [OSTI]

    Walsh, Bruce

    statistical machinery for evaluating selec- tion experiments and then assesses the success (or failure and design (use of control populations, optimal least-squares designs, BLUP/REML estimation, Bayesian the breeders' equation predicts selection response. The statistical machinery developed in the first part

  7. SQUARE ROOTS WITH MANY GOOD APPROXIMANTS Andrej Dujella1

    E-Print Network [OSTI]

    Dujella, Andrej

    of Zagreb, Bijenicka cesta 30, 10000 Zagreb, Croatia duje@math.hr Vinko Petricevi´c Dinarski put 1i, 10000 Zagreb, Croatia vinko@vip.hr Abstract Let d be a positive integer that is not a perfect square The first author was supported by the Ministry of Science, Education and Sports, Republic of Croatia, grant

  8. Biclique Cryptanalysis of the Block Cipher SQUARE Department of Information Technology, University of Isfahan, Isfahan, Iran

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    , University of Isfahan, Isfahan, Iran Abstract. SQUARE, an 8-round substitution-permutation block cipher

  9. Store House : unpacking the American dream

    E-Print Network [OSTI]

    Barker, Kyle (Kyle Lawrence)

    2014-01-01

    Since 1950 the average US home has grown from 1100 square feet to over 2600 square feet. During this same period the average family size shrunk by a person, meaning that per capita residential square footage has more than ...

  10. Thoughts on Aging

    E-Print Network [OSTI]

    Feher, George

    2010-01-01

    The impetus of writing about aging came the other day afterMagnetic Resonance Thoughts on Aging George Feher Received:at Springerlink.com When we, aging scientists, fade away and

  11. Backstage Footage from the ARPA-E Summit

    Broader source: Energy.gov [DOE]

    See what Secretary Chu, Governor Schwarzenegger and ARPA-E Director Arun Majumdar had to say to the gathering of talented graduate students during their surprise visit.

  12. U.S. uranium drilling in footage, 2004-13

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPP UPDATE:Administration Bratislava Accord |

  13. 15 Squares mod p Fix a prime p.

    E-Print Network [OSTI]

    Ramakrishnan, Dinakar

    15 Squares mod p Fix a prime p. Basic question: Given a, how can we determine if #b # Z such that a # b 2 (mod p)? Trivial case if p|a, take b # 0. So from now on take (a, p) = 1. p=3 p=5 p=7 x x 2 x x 2 x x 2 1 1 1 1 1 1 2 1 2 ­1 2 4 3 ­1 4 2 ­1=4 1 5 4 6 1 1 # d p 1, 4 as mod 5 1, 2, 4 as mod p 2

  14. 15 Squares mod p Fix a prime p.

    E-Print Network [OSTI]

    Ramakrishnan, Dinakar

    15 Squares mod p Fix a prime p. Basic question: Given a, how can we determine if b Z such that a b2 (mod p)? Trivial case if p|a, take b 0. So from now on take (a, p) = 1. p=3 p=5 p=7 x x2 x x2 x x2 1 1 1 1 1 1 2 1 2 -1 2 4 3 -1 4 2 -1=4 1 5 4 6 1 1 dp 1, 4 as mod 5 1, 2, 4 as mod p 2 2, 3 3

  15. R-SQUARE IMPEDANCES OF ERL FERRITE HOM ABSORBER.

    SciTech Connect (OSTI)

    HAHN, H.; BURRILL, A.; CALAGA,R.; KAYRAN, D.; ZHAO, Y.

    2005-07-10

    An R&D facility for an Energy Recovery Linac (ERL) intended as part of an electron-cooling project for RHIC is, being constructed at this laboratory. The center piece of the facility is a 5-cell 703.75 MHz super-conducting RF linac. Successful operation will depend on effective HOM damping. It is planned to achieve HOM damping exclusively with ferrite absorbers. The performance of a prototype absorber was measured by transforming it into a resonant cavity and alternatively by a conventional wire method. The results expressed as a surface or R-square impedance are presented in this paper.

  16. Frankfort Square, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainable Urban TransportFortistar LLC Jumpwells, Raft RiverNewFrankfort Square,

  17. Least squares based finite element formulations and their applications in fluid mechanics 

    E-Print Network [OSTI]

    Prabhakar, Vivek

    2009-05-15

    In this research, least-squares based finite element formulations and their applications in fluid mechanics are presented. Least-squares formulations offer several computational and theoretical advantages for Newtonian as well as non-Newtonian fluid...

  18. Spatial autocorrelation approaches to testing residuals from least squares regression

    E-Print Network [OSTI]

    Chen, Yanguang

    2015-01-01

    In statistics, the Durbin-Watson test is always employed to detect the presence of serial correlation of residuals from a least squares regression analysis. However, the Durbin-Watson statistic is only suitable for ordered time or spatial series. If the variables comprise cross-sectional data coming from spatial random sampling, the Durbin-Watson will be ineffectual because the value of Durbin-Watson's statistic depends on the sequences of data point arrangement. Based on the ideas from spatial autocorrelation, this paper presents two new statistics for testing serial correlation of residuals from least squares regression based on spatial samples. By analogy with the new form of Moran's index, an autocorrelation coefficient is defined with a standardized residual vector and a normalized spatial weight matrix. Then on the analogy of the Durbin-Watson statistic, a serial correlation index is constructed. As a case, the two statistics are applied to the spatial sample of 29 China's regions. These results show th...

  19. Science with ASKAP - the Australian Square Kilometre Array Pathfinder

    E-Print Network [OSTI]

    S. Johnston; R. Taylor; M. Bailes; N. Bartel; C. Baugh; M. Bietenholz; C. Blake; R. Braun; J. Brown; S. Chatterjee; J. Darling; A. Deller; R. Dodson; P. Edwards; R. Ekers; S. Ellingsen; I. Feain; B. Gaensler; M. Haverkorn; G. Hobbs; A. Hopkins; C. Jackson; C. James; G. Joncas; V. Kaspi; V. Kilborn; B. Koribalski; R. Kothes; T. Landecker; A. Lenc; J. Lovell; J. -P. Macquart; R. Manchester; D. Matthews; N. McClure-Griffiths; R. Norris; U. -L. Pen; C. Phillips; C. Power; R. Protheroe; E. Sadler; B. Schmidt; I. Stairs; L. Staveley-Smith; J. Stil; S. Tingay; A. Tzioumis; M. Walker; J. Wall; M. Wolleben

    2008-10-29

    [ABRIDGED VERSION] The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any existing radio facility. A majority of the key science for the SKA will be addressed through large-area imaging of the Universe at frequencies from 300 MHz to a few GHz. The Australian SKA Pathfinder (ASKAP) is aimed squarely in this frequency range, and achieves instantaneous wide-area imaging through the development and deployment of phase-array feed systems on parabolic reflectors. This large field-of-view makes ASKAP an unprecedented synoptic telescope poised to achieve substantial advances in SKA key science. The central core of ASKAP will be located at the Murchison Radio Observatory in inland Western Australia, one of the most radio-quiet locations on the Earth and one of the sites selected by the international community as a potential location for the SKA. Following an introductory description of ASKAP, this document contains 7 chapters describing specific science programmes for ASKAP. The combination of location, technological innovation and scientific program will ensure that ASKAP will be a world-leading radio astronomy facility, closely aligned with the scientific and technical direction of the SKA. A brief summary chapter emphasizes the point, and considers discovery space.

  20. Faraday rotation data analysis with least-squares elliptical fitting

    SciTech Connect (OSTI)

    White, Adam D.; McHale, G. Brent; Goerz, David A.; Speer, Ron D. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

    2010-10-15

    A method of analyzing Faraday rotation data from pulsed magnetic field measurements is described. The method uses direct least-squares elliptical fitting to measured data. The least-squares fit conic parameters are used to rotate, translate, and rescale the measured data. Interpretation of the transformed data provides improved accuracy and time-resolution characteristics compared with many existing methods of analyzing Faraday rotation data. The method is especially useful when linear birefringence is present at the input or output of the sensing medium, or when the relative angle of the polarizers used in analysis is not aligned with precision; under these circumstances the method is shown to return the analytically correct input signal. The method may be pertinent to other applications where analysis of Lissajous figures is required, such as the velocity interferometer system for any reflector (VISAR) diagnostics. The entire algorithm is fully automated and requires no user interaction. An example of algorithm execution is shown, using data from a fiber-based Faraday rotation sensor on a capacitive discharge experiment.

  1. QED for fields obeying a square root operator equation

    E-Print Network [OSTI]

    Tobias Gleim

    2008-02-25

    Instead of using local field equations - like the Dirac equation for spin-1/2 and the Klein-Gordon equation for spin-0 particles - one could try to use non-local field equations in order to describe scattering processes. The latter equations can be obtained by means of the relativistic energy together with the correspondence principle, resulting in equations with a square root operator. By coupling them to an electromagnetic field and expanding the square root (and taking into account terms of quadratic order in the electromagnetic coupling constant e), it is possible to calculate scattering matrix elements within the framework of quantum electrodynamics, e.g. like those for Compton scattering or for the scattering of two identical particles. This will be done here for the scalar case. These results are then compared with the corresponding ones based on the Klein-Gordon equation. A proposal of how to transfer these reflections to the spin-1/2 case is also presented.

  2. Radio Continuum Surveys with Square Kilometre Array Pathfinders Ray P. Norris1,2

    E-Print Network [OSTI]

    Norris, Ray

    Radio Continuum Surveys with Square Kilometre Array Pathfinders Ray P. Norris1,2 , J. Afonso3 , D,1 Accepted by PASA, 22 October 2012 Abstract: In the lead-up to the Square Kilometre Array (SKA) project & Background The Square Kilometre Array (SKA) is a proposed ma- jor internationally-funded radio telescope

  3. Synergy between the Large Synoptic Survey Telescope and the Square Kilometre Array

    E-Print Network [OSTI]

    McEwen, Jason

    Synergy between the Large Synoptic Survey Telescope and the Square Kilometre Array David Bacon1 waveband, and the time resolution of the SKA. Advancing Astrophysics with the Square Kilometre Array June 8 provide an overview of the science benefits of combining information from the Square Kilo- metre Array

  4. Accommodation Office Information Centre, Market Square Alcuin A and B Block A4

    E-Print Network [OSTI]

    Mitchener, Paul

    Accommodation Office · Information Centre, Market Square Alcuin A and B Block · A4 Alcuin C Block Services · Market Square Careers · Careers Building V8 Cash and Fees Office · Market Square Catalyst) Design Solutions · 5a Main Street D4 Development and Alumni Relations Office · Alumni House D4 Disability

  5. The matrix square root from a new functional perspective: theoretical results and

    E-Print Network [OSTI]

    Meini, Beatrice

    The matrix square root from a new functional perspective: theoretical results and computational issues Beatrice Meini #3; Abstract We give a new characterization of the matrix square root and a new algorithm for its computation. We show how the matrix square root is related to the constant block coe

  6. ATLAS: Deep Radio Observations of Six Square Degrees

    E-Print Network [OSTI]

    Ray P. Norris; Enno Middelberg; Brian J. Boyle

    2007-01-12

    We are using the Australia Telescope Compact Array to image about six square degrees surrounding the Chandra Deep Field South and European Large Area ISO Survey - South 1 regions, with the aim of producing the widest deep radio survey ever attempted, in fields with deep optical, infrared, and X-ray data. Our goal is to penetrate the heavy dust extinction which is found in active galaxies at all redshifts, and study the star formation activity and active galactic nuclei buried within. Although we are only about half-way through the survey, our data are proving remarkably fruitful. For example, we have discovered a new and unexpected class of object (the Infrared-Faint Radio Sources), we have found that the radio-FIR correlation extends to low flux densities, and we havefound powerful AGN-like radio objects in galaxies with a star-forming SED.

  7. Opportunities for maser studies with the Square Kilometre Array

    E-Print Network [OSTI]

    A. J. Green; W. A. Baan

    2007-09-21

    The Square Kilometre Array (SKA) is the radio telescope of the next generation, providing an increase in sensitivity and angular resolution of two orders of magnitude over existing telescopes. Currently, the SKA is expected to span the frequency range 0.1-25 GHz with capabilities including a wide field-of-view and measurement of polarised emission. Such a telescope has enormous potential for testing fundamental physical laws and producing transformational discoveries. Important science goals include using H2O megamasers to make precise estimates of H0, which will anchor the extragalactic distance scale, and to probe the central structures of accretion disks around supermassive black holes in AGNs, to study OH megamasers associated with extreme starburst activity in distant galaxies and to study with unprecedented precision molecular gas and star formation in our Galaxy.

  8. Square-well solution to the three-body problem

    E-Print Network [OSTI]

    A. S. Jensen; E. Garrido; D. V. Fedorov

    1996-08-15

    The angular part of the Faddeev equations is solved analytically for s-states for two-body square-well potentials. The results are, still analytically, generalized to arbitrary short-range potentials for both small and large distances. We consider systems with three identical bosons, three non-identical particles and two identical spin-1/2 fermions plus a third particle with arbitrary spin. The angular wave functions are in general linear combinations of trigonometric and exponential functions. The Efimov conditions are obtained at large distances. General properties and applications to arbitrary potentials are discussed. Gaussian potentials are used for illustrations. The results are useful for numerical calculations, where for example large distances can be treated analytically and matched to the numerical solutions at smaller distances. The saving is substantial.

  9. Classical and quantum dynamics in an inverse square potential

    SciTech Connect (OSTI)

    Guillaumín-España, Elisa; Núñez-Yépez, H. N.; Salas-Brito, A. L.

    2014-10-15

    The classical motion of a particle in a 3D inverse square potential with negative energy, E, is shown to be geodesic, i.e., equivalent to the particle's free motion on a non-compact phase space manifold irrespective of the sign of the coupling constant. We thus establish that all its classical orbits with E < 0 are unbounded. To analyse the corresponding quantum problem, the Schrödinger equation is solved in momentum space. No discrete energy levels exist in the unrenormalized case and the system shows a complete “fall-to-the-center” with an energy spectrum unbounded by below. Such behavior corresponds to the non-existence of bound classical orbits. The symmetry of the problem is SO(3) × SO(2, 1) corroborating previously obtained results.

  10. Narayanaswamy's 1971 aging theory and material time

    E-Print Network [OSTI]

    Jeppe C. Dyre

    2015-08-23

    The Bochkov-Kuzovlev nonlinear fluctuation-dissipation theorem is used to derive Narayanaswamy's phenomenological theory of physical aging, in which this highly nonlinear phenomenon is described by a linear material-time convolution integral. A characteristic property of the Narayanaswamy aging description is material-time translational invariance, and this is here taken as a basic assumption of the derivation. It is shown that only one possible definition of the material time obeys this invariance, namely the square of the distance travelled from a configuration of the system far back in time. The paper concludes with suggestions for computer simulations that test for consequences of material-time translational invariance. One of these is a "unique-triangles property" according to which any three points on the system's path form a triangle such that two side lengths determine the third; this is analogous to the well-known triangular relation for time-autocorrelation functions of aging spin glasses [L. F. Cugliandolo and J. Kurchan, J. Phys. A: Math. Gen. 27, 5749 (1994)]. The unique-triangles property implies a simple geometric interpretation of out-of-equilibrium time-autocorrelation functions, which extends to aging a previously proposed framework for such functions in equilibrium [J. C. Dyre, cond-mat/9712222].

  11. The Cosmic Dawn and Epoch of Reionization with the Square Kilometre Array

    E-Print Network [OSTI]

    Koopmans, L V E; Mellema, G; Abdalla, F; Aguirre, J; Ahn, K; Barkana, R; van Bemmel, I; Bernardi, G; Bonaldi, A; Briggs, F; de Bruyn, A G; Chang, T C; Chapman, E; Chen, X; Ciardi, B; Datta, K K; Dayal, P; Ferrara, A; Fialkov, A; Fiore, F; Ichiki, K; Illiev, I T; Inoue, S; Jeli?, V; Jones, M; Lazio, J; Maio, U; Majumdar, S; Mack, K J; Mesinger, A; Morales, M F; Parsons, A; Pen, U -L; Santos, M; Schneider, R; Semelin, B; de Souza, R S; Subrahmanyan, R; Takeuchi, T; Trott, C; Vedantham, H; Wagg, J; Webster, R; Wyithe, S

    2015-01-01

    Concerted effort is currently ongoing to open up the Epoch of Reionization (EoR) ($z\\sim$15-6) for studies with IR and radio telescopes. Whereas IR detections have been made of sources (Lyman-$\\alpha$ emitters, quasars and drop-outs) in this redshift regime in relatively small fields of view, no direct detection of neutral hydrogen, via the redshifted 21-cm line, has yet been established. Such a direct detection is expected in the coming years, with ongoing surveys, and could open up the entire universe from $z\\sim$6-200 for astrophysical and cosmological studies, opening not only the EoR, but also its preceding Cosmic Dawn ($z\\sim$30-15) and possibly even the later phases of the Dark Ages ($z\\sim$200-30). All currently ongoing experiments attempt statistical detections of the 21-cm signal during the EoR, with limited signal-to-noise. Direct imaging, except maybe on the largest (degree) scales at lower redshifts, as well as higher redshifts will remain out of reach. The Square Kilometre Array(SKA) will revolu...

  12. Melatonin and the aging brain

    E-Print Network [OSTI]

    BONDY, S; SHARMAN, E

    2007-01-01

    mitochondrial decay of aging. Mol. Aspects Med. 26, Ames,the degenerative diseases of aging. Proc. Natl. Acad. Sci.2004. Retardation of brain aging by chronic treatment with

  13. Synaptic plasticity in early aging.

    E-Print Network [OSTI]

    Lynch, Gary; Rex, Christopher S; Gall, Christine M

    2006-01-01

    life-span. Neurobiol. Aging 26, 511–520. Aicardi, G. ,patterns of mammalian brain aging: distribution of cathepsinand dystrophic dendrites in aging dogs resembles that in

  14. Running Head: EMOTION AND AGING Emotion and Aging

    E-Print Network [OSTI]

    Mather, Mara

    Running Head: EMOTION AND AGING Emotion and Aging Mara Mather, M., & Ponzio, A. (in press). Emotion and aging. In L. Feldman Barrett, M. All of these basic mechanisms and contextual factors change in normal aging

  15. Cross correlation surveys with the Square Kilometre Array

    E-Print Network [OSTI]

    Kirk, Donnacha; Abdalla, Filipe B; Bull, Philip; Joachimi, Benjamin

    2015-01-01

    By the time that the first phase of the Square Kilometre Array is deployed it will be able to perform state of the art Large Scale Structure (LSS) as well as Weak Gravitational Lensing (WGL) measurements of the distribution of matter in the Universe. In this chapter we concentrate on the synergies that result from cross-correlating these different SKA data products as well as external correlation with the weak lensing measurements available from CMB missions. We show that the Dark Energy figures of merit obtained individually from WGL/LSS measurements and their independent combination is significantly increased when their full cross-correlations are taken into account. This is due to the increased knowledge of galaxy bias as a function of redshift as well as the extra information from the different cosmological dependences of the cross-correlations. We show that the cross-correlation between a spectroscopic LSS sample and a weak lensing sample with photometric redshifts can calibrate these same photometric re...

  16. The Square Kilometre Array: A new probe of cosmic magnetism

    E-Print Network [OSTI]

    Bryan M. Gaensler

    2006-03-02

    Magnetic fields are a fundamental part of many astrophysical phenomena, but the evolution, structure and origin of magnetic fields are still unresolved problems in physics and astrophysics. When and how were the first fields generated? Are present-day magnetic fields the result of standard dynamo action, or do they represent rapid or recent field amplification through other processes? What role do magnetic fields play in turbulence, cosmic ray acceleration and structure formation? I explain how the Square Kilometre Array (SKA), a next-generation radio telescope, can deliver stunning new data-sets that will address these currently unanswered issues. The foundation for these experiments will be an all-sky survey of rotation measures, in which Faraday rotation toward >10^7 background sources will provide a dense grid for probing magnetism in the Milky Way, nearby galaxies, and in distant galaxies, clusters and protogalaxies. Using these data, we can map out the evolution of magnetized structures from redshifts z > 3 to the present, can distinguish between different origins for seed magnetic fields in galaxies, and can develop a detailed model of the magnetic field geometry of the intergalactic medium and of the overall Universe. In addition, the SKA will certainly discover new magnetic phenomena beyond what we can currently predict or imagine.

  17. Galaxy Evolution and Cosmology with the Square Kilometre Array

    E-Print Network [OSTI]

    S. Rawlings; F. B. Abdalla; S. L. Bridle; C. A. Blake; C. M. Baugh; L. J. Greenhill; J. M. van der Hulst

    2004-09-20

    The present-day Universe is seemingly dominated by dark energy and dark matter, but mapping the normal (baryonic) content remains vital for both astrophysics - understanding how galaxies form - and astro-particle physics - inferring properties of the dark components. The Square Kilometre Array (SKA) will provide the only means of studying the cosmic evolution of neutral Hydrogen (HI) which, alongside information on star formation from the radio continuum, is needed to understand how stars formed from gas within dark-matter over-densities and the roles of gas accretion and galaxy merging. `All hemisphere' HI redshift surveys to redshift 1.5 are feasible with wide-field-of-view realizations of the SKA and, by measuring the galaxy power spectrum in exquisite detail, will allow the first precise studies of the equation-of-state of dark energy. The SKA will be capable of other uniquely powerful cosmological studies including the measurement of the dark-matter power spectrum using weak gravitational lensing, and the precise measurement of H0 using extragalactic water masers. The SKA is likely to become the premier dark-energy-measuring machine, bringing breakthroughs in cosmology beyond those likely to be made possible by combining CMB (e.g. Planck), optical (e.g. LSST, SNAP) and other early-21st-century datasets.

  18. Science With The Australian Square Kilometre Array Pathfinder

    E-Print Network [OSTI]

    Simon Johnston

    2007-11-14

    The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than any existing radio facility. Most of the key science for the SKA will be addressed through large-area imaging of the Universe at frequencies from a few hundred MHz to a few GHz. The Australian SKA Pathfinder (ASKAP) is a technology demonstrator aimed in the mid-frequency range, and achieves instantaneous wide-area imaging through the development and deployment of phased-array feed systems on parabolic reflectors. The large field-of-view makes ASKAP an unprecedented synoptic telescope that will make substantial advances in SKA key science. ASKAP will be located at the Murchison Radio Observatory in inland Western Australia, one of the most radio-quiet locations on the Earth and one of two sites selected by the international community as a potential location for the SKA. In this paper, we outline an ambitious science program for ASKAP, examining key science such as understanding the evolution, formation and population of galaxies including our own, understanding the magnetic Universe, revealing the transient radio sky and searching for gravitational waves.

  19. Parylene C Aging Studies.

    SciTech Connect (OSTI)

    Achyuthan, Komandoor; Sawyer, Patricia Sue.; Mata, Guillermo Adrian; White II, Gregory Von; Bernstein, Robert

    2014-09-01

    Parylene C is used in a device because of its conformable deposition and other advantages. Techniques to study Parylene C aging were developed, and %22lessons learned%22 that could be utilized for future studies are the result of this initial study. Differential Scanning Calorimetry yielded temperature ranges for Parylene C aging as well as post-deposition treatment. Post-deposition techniques are suggested to improve Parylene C performance. Sample preparation was critical to aging regimen. Short-term (~40 days) aging experiments with free standing and ceramic-supported Parylene C films highlighted %22lessons learned%22 which stressed further investigations in order to refine sample preparation (film thickness, single sided uniform coating, machine versus laser cutting, annealing time, temperature) and testing issues (%22necking%22) for robust accelerated aging of Parylene C.

  20. EXPERIMENTAL STUDY OF AXISYMMETRIC INSTABILITY OF INVERSE DEE AND SQUARE TOKAMAK EQUILIBRIA

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    EXPERIMENTAL STUDY OF AXISYMMETRIC INSTABILITY OF INVERSE DEE AND SQUARE TOKAMAK EQUILIBRIA COO Study ofAxi.symmetric !nsta bUity of Inverse Dee and Square Tokamak Equilibria B. Lipschultz, S as a function of time in a tokamak with a 4-null poloidal d ivertor. Inverse dee equilibria are observed

  1. Regression Analysis Using Weighted Least Squares Robert Drucker, University of Washington (May 1996)

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Regression Analysis Using Weighted Least Squares Robert Drucker, University of Washington (May 1996) 1. Theory The j­th order least­squares regression problem can be stated in matrix notation as Y = Xb regression analysis assumes that the residuals are independent identically dis­ tributed (iid) random

  2. Ordinary Least Square Regression, Orthogonal Regression, Geometric Mean Regression and their

    E-Print Network [OSTI]

    Ordinary Least Square Regression, Orthogonal Regression, Geometric Mean Regression@notes.cc.sunysb.edu Abstract. Regression analysis, especially the ordinary least squares method which assumes that errors for both measurements. In this work, we examine two regression approaches available to accommodate

  3. Science With The Australian Square Kilometre Array Pathfinder S. JohnstonA,X

    E-Print Network [OSTI]

    Norris, Ray

    Science With The Australian Square Kilometre Array Pathfinder S. JohnstonA,X , M. BailesB , N and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development and deployment of phased-array feed systems on parabolic reflectors. The large field-of-view makes ASKAP

  4. ExaScale High Performance Computing in the Square Kilometer Array

    E-Print Network [OSTI]

    van Nieuwpoort, Rob V.

    ExaScale High Performance Computing in the Square Kilometer Array P. Chris Broekema, broekema project requires active and intensive involve- ment from both the high performance computing researchScale Computing, Square Kilometer Array, High Performance Computing, Streaming Computing 1. INTRODUCTION

  5. ISLAND COALESCENCE USING PARALLEL FIRST-ORDER SYSTEM LEAST-SQUARES ON INCOMPRESSIBLE RESISTIVE

    E-Print Network [OSTI]

    McCormick, Steve

    ISLAND COALESCENCE USING PARALLEL FIRST-ORDER SYSTEM LEAST-SQUARES ON INCOMPRESSIBLE RESISTIVE. This paper investigates the performance of a parallel Newton, first-order system least-squares (FOSLS) finite magnetohydrodynamics. In particular, an island coa- lescence test problem is studied that models magnetic reconnection

  6. Aging and decision making 

    E-Print Network [OSTI]

    Miller, Sophie

    2010-06-30

    The study sought to clarify the effects of aging in regard to decision making abilities. Decision making is dependent upon the Frontal Cortex structures; the Orbitofrontal Cortex and the Dorsolateral Prefrontal Cortex. These structures are thought...

  7. A review of "Dutch Culture in the Golden Age" by J. L. Price 

    E-Print Network [OSTI]

    Cruz, Laura

    2012-01-01

    with conservatism and censorship; and all of these debates took place in public places, in the pamphlet literature, in university classrooms, in cafes and living rooms, and in town squares. It was this tension, argues Price, which gave the Golden Age its...

  8. Affective Neuroscience of Aging The Affective Neuroscience of Aging

    E-Print Network [OSTI]

    Mather, Mara

    Affective Neuroscience of Aging - 1 - The Affective Neuroscience of Aging Mara Mather University running title: Affective Neuroscience of Aging #12;Affective Neuroscience of Aging - 2 - Contents INTRODUCTION THE FATE OF EMOTION-RELATED BRAIN REGIONS AND MONOAMINERGIC NEUROTRANSMITTER SYSTEMS IN AGING

  9. Aging in fragile X syndrome

    E-Print Network [OSTI]

    2010-01-01

    intensified the need for aging studies in FXS. Approximatelywe have surveyed all of the aging patients with FXS that wemedical complications of aging seen in those with FXS. Data

  10. Signatures of aging

    SciTech Connect (OSTI)

    Cornwall, J.; Dyson, F.; Garwin, R.; Hammer, D.; Happer, W.; Lewis, N.; Schwitters, R.; Sullivan, J.; Williams, E.

    1998-01-06

    The Department of Energy and its three weapons laboratories (LANL, LLNL, and SNL) have developed a Stockpile Stewardship and Management Program (SSMP) in response to their designated mission of maintaining an effective, i.e. reliable and safe, nuclear deterrent without underground nuclear tests (UGTs). The need to ensure the effectiveness of an aging stockpile presents new challenges of major importance. In this study we review what is known about the aging of critical constituents, particularly the high explosives, polymers, and metals in the enduring stockpile. We discuss data that are required to provide a fuller understanding of aging, and how to obtain that data as a basis for anticipating and addressing potential stockpile problems. Our particular concern is problems that may arise in the short term, i.e. within the next 5 to 10 years, and their implied requirements for preventive maintenance and remanufacture.

  11. Aging in community

    E-Print Network [OSTI]

    Fay, Justin (Justin Thomas)

    2008-01-01

    Baby Boomers are on the brink of retirement. According to U.S. Census Bureau projections, the number of people aged 65 and over will more than double in the coming decades, growing from 35 million in 2000 to 72 million in ...

  12. Supercomputing Comes of Age

    E-Print Network [OSTI]

    Feng, Xizhou

    Green Supercomputing Comes of Age Wu-chun Feng, Xizhou Feng, and Rong Ge Energy-efficient (green started exploring green supercomputing as a way to achieve au- tonomic energy and power savings and the Department of Energy, conducted a study that found 97 per- cent of businesses could not compete (or exist

  13. Urban square as theater : issues of continuity and discontinuity in urban design

    E-Print Network [OSTI]

    Hsu, Buo-yuan

    1993-01-01

    This thesis tries to establish some criteria for designing a good urban square, with concern for the static and dynamic approaches. The former refers to aesthetic issues, and the latter refers to social and contextual ones. ...

  14. Massively parallel solver for the high-order Galerkin Least-Squares method

    E-Print Network [OSTI]

    Yano, Masayuki, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    A high-order Galerkin Least-Squares (GLS) finite element discretization is combined with massively parallel implicit solvers. The stabilization parameter of the GLS discretization is modified to improve the resolution ...

  15. Condensation heat transfer in square, triangular, and semi-circular mini-channels Melanie Derby a

    E-Print Network [OSTI]

    Peles, Yoav

    Condensation heat transfer in square, triangular, and semi-circular mini-channels Melanie Derby a , Hee Joon Lee a,b , Yoav Peles a , Michael K. Jensen a, a Department of Mechanical, Aerospace

  16. Spatial qualities of innovation districts : how Third Places are changing the innovation ecosystem of Kendall Square

    E-Print Network [OSTI]

    Kim, Minjee

    2013-01-01

    This thesis analyzes the spatial dimensions of an urban high-tech cluster in the changing socio-economic landscape of American cities. Using Kendall Square as the primary case study, I analyzed the spatial qualities and ...

  17. Quantum anomalous Hall effect with cold atoms trapped in a square lattice 

    E-Print Network [OSTI]

    Liu, Xiong-Jun; Liu, Xin; Wu, Congjun; Sinova, Jairo

    2010-01-01

    We propose an experimental scheme to realize the quantum anomalous Hall effect in an anisotropic square optical lattice which can be generated from available experimental setups of double-well lattices with minor modifications. A periodic gauge...

  18. Negative-norm least-squares methods for axisymmetric Maxwell equations 

    E-Print Network [OSTI]

    Copeland, Dylan Matthew

    2006-08-16

    We develop negative-norm least-squares methods to solve the three-dimensional Maxwell equations for static and time-harmonic electromagnetic fields in the case of axial symmetry. The methods compute solutions in a ...

  19. Load Forecasting using Fixed-Size Least Squares Support Vector Machines

    E-Print Network [OSTI]

    -SVM formulation, on the other hand, solves a linear sys- tem in dual space under a least-squares cost function [13 series comes from a local low voltage substation in Belgium and it contains 28,000 hourly values

  20. PLC-9 Non Rusting Stainless Steel Column 10" Square with Radius Corners

    E-Print Network [OSTI]

    Stuart, Steven J.

    PLC-9 Non Rusting Stainless Steel Column 10" Square with Radius Corners Unit includes two lights General Specifications of PLC-9 Column Non Rusting, Non Magnetic Stainless Steel - .125" Thick Dimensions

  1. The Murchison Widefield Array: The Square Kilometre Array Precursor at Low Radio Frequencies

    E-Print Network [OSTI]

    Goeke, Robert F.

    The Murchison Widefield Array (MWA) is one of three Square Kilometre Array Precursor telescopes and is located at the Murchison Radio-astronomy Observatory in the Murchison Shire of the mid-west of Western Australia, a ...

  2. Multivariate analysis of neuronal interactions in the generalized partial least squares framework: simulations and empirical studies

    E-Print Network [OSTI]

    Multivariate analysis of neuronal interactions in the generalized partial least squares framework the brain. Multivariate analysis can explicitly test for multiple statistical models, including the designed paradigm, and allows for spatial and temporal model detection. Here, we investigate multivariate analysis

  3. High-performance MEMS square electrode quadrupole mass filters for chip-scale mass spectrometry

    E-Print Network [OSTI]

    Cheung, Kerry

    We report exciting experimental data from a low-cost, high-performance square electrode quadrupole mass filter with integrated ion optics intended for chips-cale mass spectrometry. The device showed a mass range of 650 amu ...

  4. Heat/mass transfer distribution in rotating two-pass square channel 

    E-Print Network [OSTI]

    Kandis, Mouhyieldin

    1994-01-01

    The heat/mass trasfer distribution for turbulent flow in a rotating two-pass square channel having a sharp 180' turn were investigated via the naphthalene sublimation technique. The test section models the internal cooling passages of gas turbine...

  5. The application of small amplitude square root of time potential pulses in electrochemical trace analysis 

    E-Print Network [OSTI]

    Cranston, Stacy Eugene

    1975-01-01

    THE APPLICATION OF SMALL AMPLITUDE SQUARE BOOT OF TIME POTENTIAL PULSES IN ELECTROCHEMICAL TRACE ANALYSIS A Thesis by STACY EUGENE CRANSTON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1975 Ma]or Sub)ect: Chemistry THE APPLICATION OF SMALL AMPLITUDE SQUARE ROOT OF TIME POTENTIAL PULSES IN ELECTROCHEMICAL TRACE ANALYSIS A Thesis STACY EUGENE CRANSTON Approved as to style and content by...

  6. Magnetic vortex crystal formation in the antidot complement of square artificial spin ice

    SciTech Connect (OSTI)

    Araujo, C. I. L. de Silva, R. C.; Ribeiro, I. R. B.; Nascimento, F. S.; Felix, J. F.; Ferreira, S. O.; Moura-Melo, W. A.; Pereira, A. R.; Mól, L. A. S.

    2014-03-03

    We have studied ferromagnetic nickel thin films patterned with square lattices of elongated antidots that are negative analogues of square artificial spin ice. Micromagnetic simulations and direct current magnetic moment measurements reveal in-plane anisotropy of the magnetic hysteresis loops, and the formation of a dense array of magnetic vortices with random polarization and chirality. These multiply-connected antidot arrays could be superior to lattices of disconnected nanodisks for investigations of vortex switching by applied electric current.

  7. Aging in Utah: Avoid Crisis

    E-Print Network [OSTI]

    Tipple, Brett

    Aging in Utah: Avoid Crisis Maximize Opportunity UTAH COMMISSION ON AGING Annual Report 2010-2011 #12;Page 1Utah Commission on Aging 2010-2011 Interim Report The Commission's statutory purpose is to: a. increase public and government understanding of the current and future needs of the state's aging

  8. Navigational strategy switching in ageing 

    E-Print Network [OSTI]

    Harris, Mathew Alan

    2014-11-28

    With advancing age, many cognitive faculties deteriorate, and navigation abilities may be among those most affected. The majority of previous work investigating navigation impairments in ageing has focused on allocentric ...

  9. Aging and the labor market

    E-Print Network [OSTI]

    Lahey, Joanna

    2005-01-01

    This thesis is a collection of three essays analyzing the interplay between aging and the labor market. The first chapter demonstrates that differential treatment by age exists in labor markets and explores different ...

  10. Evolution of ageing since Darwin

    E-Print Network [OSTI]

    Rose, Michael R; Burke, Molly K; Shahrestani, Parvin; Mueller, Laurence D

    2008-01-01

    evolution of aging. World Scientific Publishing, Singapore.M. Matos), pp. 237–448. World Scientific Publishing, Sin-

  11. Limits on deviations from the inverse-square law on megaparsec scales

    E-Print Network [OSTI]

    Carolyn Sealfon; Licia Verde; Raul Jimenez

    2005-06-29

    We present an attempt to constrain deviations from the gravitational inverse-square law on large-scale structure scales. A perturbed law modifies the Poisson equation, which implies a scale-dependent growth of overdensities in the linear regime and thus modifies the power spectrum shape. We use two large-scale structure surveys (the Sloan Digital Sky survey and the Anglo-Australian Two-degree field galaxy redshift survey) to constrain the parameters of two simple modifications of the inverse-square law. We find no evidence for deviations from normal gravity on the scales probed by these surveys (~ 10^(23) m.)

  12. Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale

    E-Print Network [OSTI]

    D. J. Kapner; T. S. Cook; E. G. Adelberger; J. H. Gundlach; B. R. Heckel; C. D. Hoyle; H. E. Swanson

    2006-11-14

    We conducted three torsion-balance experiments to test the gravitational inverse-square law at separations between 9.53 mm and 55 micrometers, probing distances less than the dark-energy length scale $\\lambda_{\\rm d}=\\sqrt[4]{\\hbar c/\\rho_{\\rm d}}\\approx 85 \\mu$m. We find with 95% confidence that the inverse-square law holds ($|\\alpha| \\leq 1$) down to a length scale $\\lambda = 56 \\mu$m and that an extra dimension must have a size $R \\leq 44 \\mu$m.

  13. Acceleration Control in Nonlinear Vibrating Systems based on Damped Least Squares

    E-Print Network [OSTI]

    Pilipchuk, V N

    2011-01-01

    A discrete time control algorithm using the damped least squares is introduced for acceleration and energy exchange controls in nonlinear vibrating systems. It is shown that the damping constant of least squares and sampling time step of the controller must be inversely related to insure that vanishing the time step has little effect on the results. The algorithm is illustrated on two linearly coupled Duffing oscillators near the 1:1 internal resonance. In particular, it is shown that varying the dissipation ratio of one of the two oscillators can significantly suppress the nonlinear beat phenomenon.

  14. The Age of the Universe

    E-Print Network [OSTI]

    Raul Jimenez

    1997-01-29

    In this article I review the main methods for determining the age of the Universe. I describe how to determine the age of the oldest known systems at z=0, the system of galactic globular clusters, using different techniques. I also describe how to date the Universe using the decay of radioactive elements (Cosmochronology). Finally, I focus on how to determine the age of the Universe at different redshifts and specially the age of radio-quiet galaxies at high redshift. I finish by arguing that the most probable age for the Universe is $14 \\pm 2$ Gyr.

  15. Representation of thermal energy in the design process

    E-Print Network [OSTI]

    Roth, Shaun

    1995-01-01

    The goal of thermal design is to go beyond the comfort zone. In spatial design architects don't just look up square footage requirements and then draw a rectangle that satisfies the givens. There must be an interpretation. ...

  16. Establishing Design Requirements for Energy

    Broader source: Energy.gov [DOE]

    Programming defines details about the project, including square footage, types of building space, and use. The team should make decisions to define the energy needs of the building. Beyond...

  17. --No Title--

    U.S. Energy Information Administration (EIA) Indexed Site

    File02: (file02cb83.csv) BLDGID2 Building ID STR402 Half-sample stratum PAIR402 Half-sample pair number SQFTC2 Square footage SQFTC17. BCWM2C Principal activity BCWOM25....

  18. Gene Feature Extraction Using T-Test Statistics and Kernel Partial Least Squares

    E-Print Network [OSTI]

    Kwok, James Tin-Yau

    Gene Feature Extraction Using T-Test Statistics and Kernel Partial Least Squares Shutao Li1 , Chen Clear Water Bay, Hong Kong shutao li@yahoo.com.cn, lc337199@sina.com, jamesk@cs.ust.hk Abstract. In this paper, we propose a gene extraction method by us- ing two standard feature extraction methods, namely

  19. 1128 volume 27 number 12 december 2009 nature biotechnology square meter per day of algae containing

    E-Print Network [OSTI]

    Cai, Long

    1128 volume 27 number 12 december 2009 nature biotechnology square meter per day of algae, such as triglycerides from algae or cellulosic biomass from higher plants, as feedstocks for biofuel production. The algal program sought to develop high-oil-content algae that grow at very fast rates. In our report

  20. Gravity as the square of Yang-Mills: implications for N=8 Supergravity

    E-Print Network [OSTI]

    Sudarshan Ananth

    2009-02-18

    The pure gravity Lagrangian can be written as the "square" of the pure Yang-Mills Lagrangian to second order in coupling constants. This paper uses this form of the gravity Lagrangian as a starting point to arrive at a compact light-cone superspace Lagrangian for N=8 Supergravity to order $\\kappa$^2.

  1. Partial least squares regression as an alternative to current regression methods used in ecology

    E-Print Network [OSTI]

    Carrascal, Luis M.

    Partial least squares regression as an alternative to current regression methods used in ecology regression analysis (PLSR), and its potential utility in ecological studies. This statistical technique with multiple regression (MR) and with a combination of principal component analysis and multiple regression

  2. Low-frequency square-wave electronic ballast with resonant ignition using digital mode and power

    E-Print Network [OSTI]

    Low-frequency square-wave electronic ballast with resonant ignition using digital mode and power both the functions of a resonant circuit for lamp ignition and a current controlled low frequency of the FB converter according to the lamp requirements. I. INTRODUCTION The primary motivation for using low

  3. The BSHM -LMS 150th Anniversary De Morgan House, Russell Square, London

    E-Print Network [OSTI]

    Abrahams, I. David

    The BSHM - LMS 150th Anniversary De Morgan House, Russell Square, London (nearest tube: Russell Fisher (lmsmeetings@lms.ac.uk) by Friday 1st May. Late registrations for places may still be accepted. +44 (0)20 7637 3686. www.lms.ac.uk. Registered Charity No. 252660. b s h m Date 9th May 2015 De Morgan

  4. A Generalized Formula for Converting Chi-Square Tests to Effect Sizes for Meta-Analysis

    E-Print Network [OSTI]

    Rosenberg, Michael S.

    A Generalized Formula for Converting Chi-Square Tests to Effect Sizes for Meta-Analysis Michael S Sciences, Arizona State University, Tempe, Arizona, United States of America Abstract The common formula of the effect size. A corrected formula is provided. Citation: Rosenberg MS (2010) A Generalized Formula

  5. Global Optimization of Polynomials Using Generalized Critical Values and Sums of Squares

    E-Print Network [OSTI]

    Safey El Din, Mohab

    - ometrical problems and computation Feng Guo and Lihong Zhi are supported by the Chi- nese National Natural Science Foundation under grant NSFC60821002/F02 and 10871194. Feng Guo, Mohab Safey El Din and Lihong ZhiGlobal Optimization of Polynomials Using Generalized Critical Values and Sums of Squares Feng Guo

  6. Application of Least Squares MPE technique in the reduced order modeling of electrical circuits

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    fast analysis of the circuit designs and reduce the manufacturing cost and time. Typical dimensions models [12]. Due to the growing complexities in circuit designs, linear models are often inadequateApplication of Least Squares MPE technique in the reduced order modeling of electrical circuits

  7. Passive tracer reconstruction as a least-squares problem with a semi-Lagrangian constraint

    E-Print Network [OSTI]

    deYoung, Brad

    Passive tracer reconstruction as a least-squares problem with a semi-Lagrangian constraint-dimensional, nonstationary, passive tracer field in the ocean with open boundaries and a known velocity field. The observations, spatial smoothing terms and passive tracer conservation equation were included as weak

  8. Radio Number for Square of Cycles Daphne Der-Fen Liu

    E-Print Network [OSTI]

    Liu, Daphne Der-Fen

    Radio Number for Square of Cycles Daphne Der-Fen Liu Melanie Xie Department of Mathematics and v. A radio labelling for G is a function f that assigns to each vertex a non- negative integer. The span of f is the difference of the maximum and the minimum labels assigned. The radio number of G

  9. Electric-field-driven magnetization reversal in square-shaped nanomagnet-based multiferroic heterostructure

    E-Print Network [OSTI]

    Chen, Long-Qing

    Electric-field-driven magnetization reversal in square-shaped nanomagnet-based multiferroic. Lett. 98, 222509 (2011); 10.1063/1.3597796 Electrically controlled magnetization switching://scitation.aip.org/termsconditions. Downloaded to IP: 128.118.37.128 On: Wed, 27 May 2015 18:58:21 #12;Electric-field-driven magnetization

  10. Bulk, surface and corner free energy series for the chromatic polynomial on the square and triangular

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Bulk, surface and corner free energy series for the chromatic polynomial on the square, surface and corner free energies of the chromatic polynomial. This extends the existing series expression for the bulk free energy (to order q-40 ), and we are able to conjecture exact product formulae

  11. Particle Physics Implications of a Recent Test of the Gravitational Inverse Square Law

    E-Print Network [OSTI]

    E. G. Adelberger; B. R. Heckel; S. Hoedl; C. D. Hoyle; D. J. Kapner; A. Upadhye

    2007-02-07

    We use data from our recent search for violations of the gravitational inverse-square law to constrain dilaton, radion and chameleon exchange forces as well as arbitrary vector or scalar interactions. We test the interpretation of the PVLAS effect and a conjectured ``fat graviton'' scenario and constrain the $\\gamma_5$ couplings of pseuodscalar bosons and arbitrary power-law interactions.

  12. NUMERICAL NULL CONTROLLABILITY OF THE HEAT EQUATION THROUGH A LEAST SQUARES AND VARIATIONAL APPROACH

    E-Print Network [OSTI]

    NUMERICAL NULL CONTROLLABILITY OF THE HEAT EQUATION THROUGH A LEAST SQUARES AND VARIATIONAL of null controls for the heat equation. The goal is to compute an approximation of controls that drives-space dimensional case. Key Words. Heat equation, Null controllability, Numerical approximation, Variational ap

  13. Numerical null controllability of semi-linear 1-D heat equations: fixed point, least squares and

    E-Print Network [OSTI]

    Sart, Remi

    Numerical null controllability of semi-linear 1-D heat equations: fixed point, least squares with the numerical computation of distributed null controls for semi- linear 1D heat equations, in the sublinear in [Fernandez-Cara & Zuazua, Null and approximate controllability for weakly blowing up semi-linear heat

  14. On the Lorentz invariance of the Square root Klein-Gordon Equation

    E-Print Network [OSTI]

    Mohammad Javad Kazemi; Mohammad H. Barati; Jafar Khodagholizadeh; Alireza Babazadeh

    2015-06-17

    We show that the Born's rule is incompatible with Lorentz symmetry of the Square Root Klein-Gordon equation (SRKG equation). It has been demonstrated that the Born rule must be modified in relativistic regime if one wishes to keep the SRKG equation as the correct equation for describing quantum behavior.

  15. WCOM'2009/MATH Defeng Sun/NUS 1 A Proximal Point Method for Matrix Least Squares

    E-Print Network [OSTI]

    Sun, Defeng

    WCOM'2009/MATH Defeng Sun/NUS 1 ' & $ % A Proximal Point Method for Matrix Least Squares Problem with Nuclear Norm Regularization Defeng Sun Department of Mathematics National University of Singapore May 2, 2009 Joint work with Kaifeng Jiang and Kim Chuan Toh #12;WCOM'2009/MATH Defeng Sun/NUS 2 ' & $ % Let Sn

  16. Nanjing, July 26, 2008 Defeng Sun 1 Calibrating Least Squares Covariance Matrix Problems

    E-Print Network [OSTI]

    Sun, Defeng

    Nanjing, July 26, 2008 Defeng Sun 1 ' & $ % Calibrating Least Squares Covariance Matrix Problems with Equality and Inequality Constraints Defeng Sun Department of Mathematics National University of Singapore to Professor Bingsheng He #12;Nanjing, July 26, 2008 Defeng Sun 2 ' & $ % Let Sn be the set of all real

  17. Convergence of Common Proximal Methods for 1-Regularized Least Squares Shaozhe Tao, Daniel Boley, Shuzhong Zhang

    E-Print Network [OSTI]

    Boley, Daniel

    ]ISTA ([fast] iterative shrinkage and thresholding algorithm) and CD (coordinate descent) methods on the model Introduction Many problems in machine learning and data fitting can be cast as a least squares problem of these methods: the Alternating Direction Method of Multipliers (ADMM) [Boyd et al., 2011], Itera- tive Shrinkage

  18. NON-STANDARD BEHAVIOR OF DENSITY ESTIMATORS FOR SUMS OF SQUARED OBSERVATIONS

    E-Print Network [OSTI]

    Schick, Anton

    NON-STANDARD BEHAVIOR OF DENSITY ESTIMATORS FOR SUMS OF SQUARED OBSERVATIONS By Anton Schick;2 A. SCHICK AND W. WEFELMEYER with a kernel estimator ^f of f. This is a plug-in estimator which with functional central limit theorems in the corresponding spaces. Schick and Wefelmeyer (2004, 2007) prove

  19. Dos and don'ts of reduced chi-squared Rene Andrae1

    E-Print Network [OSTI]

    Masci, Frank

    Dos and don'ts of reduced chi-squared Ren´e Andrae1 , Tim Schulze-Hartung1 & Peter Melchior2 1 Max, ZAH, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany e-mail: andrae@mpia-hd.mpg.de Reduced chi

  20. Impact Ionization Model Using Average Energy and Average Square Energy of Distribution Function

    E-Print Network [OSTI]

    Dunham, Scott

    Impact Ionization Model Using Average Energy and Average Square Energy of Distribution Function Ken relaxation length, v sat ø h''i (¸ 0:05¯m), the energy distribution function is not well described calculation of impact ionization coefficient requires the use of a high energy distribution function because

  1. Cellular Computing and Least Squares for partial differential problems parallel solving

    E-Print Network [OSTI]

    Nicolas Fressengeas; Hervé Frezza-Buet

    2010-01-29

    This paper shows how partial differential problems can be solved thanks to cellular computing and an adaptation of the Least Squares Finite Elements Method. As cellular computing can be implemented on distributed parallel architectures, this method allows the distribution of a resource demanding differential problem over a computer network.

  2. Nonresidential buildings energy consumption survey: 1979 consumption and expenditures. Part 2. Steam, fuel oil, LPG, and all fuels

    SciTech Connect (OSTI)

    Patinkin, L.

    1983-12-01

    This report presents data on square footage and on total energy consumption and expenditures for commercial buildings in the contiguous United States. Also included are detailed consumption and expenditures tables for fuel oil or kerosene, liquid petroleum gas (LPG), and purchased steam. Commercial buildings include all nonresidential buildings with the exception of those where industrial activities occupy more of the total square footage than any other type of activity. 7 figures, 23 tables.

  3. Relative Ages of Globular Clusters

    E-Print Network [OSTI]

    Thomas H. Puzia

    2002-10-18

    Ages of extragalactic globular clusters can provide valuable insights into the formation and evolution of galaxies. In this contribution the photometric methods of age dating old globular cluster systems are summarised. The spectroscopic approach is reviewed with an emphasis of the right choice of age diagnostics. We present a new method of quantifying the relatively best age-sensitive spectroscopic index given the quality of a data set and a certain theoretical stellar synthesis model. The relatively best diagnostic plot is constructed from the set of Lick indices and used to age date globular clusters in several early-type galaxies which are part of a large spectroscopic survey of extragalactic globular cluster systems. We find that, independently of host galaxy, metal-poor ([Fe/H] 8 Gyr) and coeval. Metal-rich clusters show a wide range of ages from ~15 down to a few Gyr.

  4. Design Evolution Study - Aging Options

    SciTech Connect (OSTI)

    P. McDaniel

    2002-04-05

    The purpose of this study is to identify options and issues for aging commercial spent nuclear fuel received for disposal at the Yucca Mountain Mined Geologic Repository. Some early shipments of commercial spent nuclear fuel to the repository may be received with high-heat-output (younger) fuel assemblies that will need to be managed to meet thermal goals for emplacement. The capability to age as much as 40,000 metric tons of heavy metal of commercial spent nuclear he1 would provide more flexibility in the design to manage this younger fuel and to decouple waste receipt and waste emplacement. The following potential aging location options are evaluated: (1) Surface aging at four locations near the North Portal; (2) Subsurface aging in the permanent emplacement drifts; and (3) Subsurface aging in a new subsurface area. The following aging container options are evaluated: (1) Complete Waste Package; (2) Stainless Steel inner liner of the waste package; (3) Dual Purpose Canisters; (4) Multi-Purpose Canisters; and (5) New disposable canister for uncanistered commercial spent nuclear fuel. Each option is compared to a ''Base Case,'' which is the expected normal waste packaging process without aging. A Value Engineering approach is used to score each option against nine technical criteria and rank the options. Open issues with each of the options and suggested future actions are also presented. Costs for aging containers and aging locations are evaluated separately. Capital costs are developed for direct costs and distributable field costs. To the extent practical, unit costs are presented. Indirect costs, operating costs, and total system life cycle costs will be evaluated outside of this study. Three recommendations for aging commercial spent nuclear fuel--subsurface, surface, and combined surface and subsurface are presented for further review in the overall design re-evaluation effort. Options that were evaluated but not recommended are: subsurface aging in a new subsurface area (high cost); surface aging in the complete waste package (risk to the waste package and impact on the Waste Handling Facility); and aging in the stainless steel liner (impact on the waste package design and new high risk operations added to the waste packaging process). The selection of a design basis for aging will be made in conjunction with the other design re-evaluation studies.

  5. arXiv:1103.0628v1[astro-ph.IM]3Mar2011 Bivariate least squares linear regression

    E-Print Network [OSTI]

    Masci, Frank

    arXiv:1103.0628v1[astro-ph.IM]3Mar2011 Bivariate least squares linear regression: towards a unified squares linear regression, the classical ap- proach pursued for functional models in earlier attempts are regression lines in the general case of correlated errors in X and in Y for heteroscedastic data

  6. Tilt Beam Characteristic by Changing Length of Finite-Sized Square Dielectric Substrate of One Arm Rectangular Spiral Antenna

    E-Print Network [OSTI]

    De Flaviis, Franco

    Tilt Beam Characteristic by Changing Length of Finite-Sized Square Dielectric Substrate of One Arm by changing the length of finite-sized square dielectric substrate of one arm rectangular spiral antenna has). Horizontal spiral arm length (HL) is varied from HL=0.8o to HL=5.2o to choose the length that yields

  7. FREEZE-FRACTURE AND IMMUNOGOLD ANALYSIS OF AQUAPORIN-4 (AQP4) SQUARE ARRAYS, WITH MODELS OF AQP4 LATTICE

    E-Print Network [OSTI]

    Rash, John E.

    FREEZE-FRACTURE AND IMMUNOGOLD ANALYSIS OF AQUAPORIN-4 (AQP4) SQUARE ARRAYS, WITH MODELS OF AQP4 proteins in a tetrameric IMP. Several struc- tural models are considered that incorporate freeze-fracture of AQP4 in "square arrays" of astrocytes and ependymocytes Early freeze-fracture studi

  8. Least Squares Pole Assignment by Memory-less Output Feedback* Dan-chi Jiang & J. B. Moore

    E-Print Network [OSTI]

    Moore, John Barratt

    Least Squares Pole Assignment by Memory-less Output Feedback* Dan-chi Jiang & J. B. Moore In this paper, a pole assignmentproblem of lineartime invariantcontrol system by memory- less output feedback is posed as a least squares poles assignmentproblem and analysed. The coat functions are appropriately

  9. Ballistic electrons in an open square geometry: Selective probing of resonant-energy states

    SciTech Connect (OSTI)

    Zozoulenko, I.V.; Schuster, R.; Berggren, K.-.; Ensslin, K.

    1997-04-01

    We report on the interplay between classical trajectories and quantum-mechanical effects in a square geometry. At low magnetic fields the four-terminal resistance is dominated by phenomena that depend on ballistic trajectories in a classical billiard. Superimposed on these classical effects are quantum interference effects manifested by highly periodic conductance oscillations. Numerical analysis shows that these oscillations are directly related to excitations of particular eigenstates in the square. In spite of open leads, transport through an open cavity is effectively mediated by just a few (or even a single) resonant-energy states. The leads injecting electrons into the cavity play a decisive role in a selection of the particular set of states excited in the dot. The above selection rule sets a specific frequency of the oscillations seen in the experiment. {copyright} {ital 1997} {ital The American Physical Society}

  10. Shot noise in an electron waveguide square root of NOT gate

    E-Print Network [OSTI]

    Linda E. Reichl; Michael G. Snyder

    2006-01-17

    We present a calculation of the shot noise in a ballistic electron waveguide square root of NOT gate. A general expression for the shot noise in the leads connected to these types of gates is shown. We then parameterize an S-matrix which qualitatively describes the action of a square root of NOT gate previously found through numerical methods for GaAs/Al_xGa_{1-x}As based waveguides systems. Using this S-matrix, the shot noise in a single output lead and across two output leads is calculated. We find that the measurement of the shot noise across two output leads allows for the determination of the fidelity of the gate itself.

  11. Non-perturbative and self-consistent models of neutron stars in R-squared gravity

    SciTech Connect (OSTI)

    Yazadjiev, Stoytcho S.; Doneva, Daniela D.; Kokkotas, Kostas D.; Staykov, Kalin V. E-mail: daniela.doneva@uni-tuebingen.de E-mail: kalin.v.staikov@gmail.com

    2014-06-01

    In the present paper we investigate non-perturbatively and self-consistently the structure of neutron stars in R-squared gravity by simultaneously solving the interior and exterior problem. The mass-radius relations are obtained for several equations of state and for wide range of the R-squared gravity parameter a. Even though the deviation from general relativity for nonzero values of a can be large, they are still comparable with the variations due to different modern realistic equations of state. That is why the current observations of the neutron star masses and radii alone can not put constraints on the value of the parameter a. We also compare our results with those obtained within the perturbative method and we discuss the differences between them.

  12. Square Kilometer Array Telescope - Precision Reference Frequency Synchronisation via 1f-2f Dissemination

    E-Print Network [OSTI]

    Wang, B; Gao, C; Bai, Y; Dong, J W; Wang, L J

    2015-01-01

    The Square Kilometer Array (SKA) is an international effort to build the world's largest radio telescope, with one square kilometer collecting area. Besides its ambitious scientific objectives, such as probing the cosmic dawn and cradle of life, SKA also demands several revolutionary technological breakthroughs, with ultra-high precision synchronisation of the frequency references for thousands of antennas being one of them. In this report, aimed at applications to SKA, we demonstrate a frequency reference synchronization and dissemination scheme with the phase noise compensation function placed at the client site. Hence, one central hub can be linked to a large number of client sites, forming a star-shaped topology. As a performance test, the 100 MHz reference signal from a Hydrogen maser clock is disseminated and recovered at two remote sites. Phase noise characteristics of the recovered reference frequency signal coincides with that of the hydrogen-maser source and satisfies SKA requirement.

  13. Control protocol of finite dimensional quantum systems using alternating square pulse

    E-Print Network [OSTI]

    Jianju Tang; H. C. Fu

    2013-12-18

    Control protocol to drive finite dimensional quantum systems to an arbitrary target state using square pulses is proposed explicitly. It is a multi-cycle control process and in each cycle we apply square pulses to cause single or a few transitions between energy levels. Systems with equal energy gaps except the first one, four dimensional system with equal first and third energy gaps and different second energy gap, and systems with all equal energy gaps of dimension three, are investigated in detail. The control parameters, the interaction time between systems and control fields and free evolution times between cycles, are connected with the probability amplitudes of target states via trigonometric functions and are determined analytically.

  14. Method for exploiting bias in factor analysis using constrained alternating least squares algorithms

    DOE Patents [OSTI]

    Keenan, Michael R. (Albuquerque, NM)

    2008-12-30

    Bias plays an important role in factor analysis and is often implicitly made use of, for example, to constrain solutions to factors that conform to physical reality. However, when components are collinear, a large range of solutions may exist that satisfy the basic constraints and fit the data equally well. In such cases, the introduction of mathematical bias through the application of constraints may select solutions that are less than optimal. The biased alternating least squares algorithm of the present invention can offset mathematical bias introduced by constraints in the standard alternating least squares analysis to achieve factor solutions that are most consistent with physical reality. In addition, these methods can be used to explicitly exploit bias to provide alternative views and provide additional insights into spectral data sets.

  15. The distribution of natural numbers divisible by 2,3,5,11,13 and 17 on the Square Root Spiral

    E-Print Network [OSTI]

    Harry K. Hahn

    2008-01-29

    The natural numbers divisible by the Prime Factors 2, 3, 5, 11, 13 and 17 lie on defined spiral graphs, which run through the Square Root Spiral. A mathematical analysis shows, that these spiral graphs are defined by specific quadratic polynomials. Basically all natural number which are divisible by the same prime factor lie on such spiral graphs. And these spiral graphs can be assigned to a certain number of Spiral Graph Systems, which have a defined spatial orientation to each other. This document represents a supplementation to my detailed introduction study to the Square Root Spiral, and it contains the missing diagrams and analyses, showing the distribution of the natural numbers divisible by 2, 3, 5, 11, 13 and 17 on the Square Root Spiral. My introduction study to the Square Root Spiral can be found in the arxiv-archive. The title of this study : The ordered distribution of the natural numbers on the Square Root Spiral.

  16. Travelling-waves consistent with turbulence-driven secondary flow in a square duct

    E-Print Network [OSTI]

    Uhlmann, Markus; Pinelli, Alfredo; 10.1063/1.3466661

    2010-01-01

    We present numerically determined travelling-wave solutions for pressure-driven flow through a straight duct with a square cross-section. This family of solutions represents typical coherent structures (a staggered array of counter-rotating streamwise vortices and an associated low-speed streak) on each wall. Their streamwise average flow in the cross-sectional plane corresponds to an eight vortex pattern much alike the secondary flow found in the turbulent regime.

  17. Coherent and generalized intelligent states for infinite square well potential and nonlinear oscillators

    E-Print Network [OSTI]

    A. H. El Kinani; M. Daoud

    2003-12-13

    This article is an illustration of the construction of coherent and generalized intelligent states which has been recently proposed by us for an arbitrary quantum system $[ 1] $. We treat the quantum system submitted to the infinite square well potential and the nonlinear oscillators. By means of the analytical representation of the coherent states \\`{a} la Gazeau-Klauder and those \\`{a} la Klauder-Perelomov, we derive the generalized intelligent states in analytical ways.

  18. Complete Set of Inner Products for a Discrete PT-symmetric Square-well Hamiltonian

    E-Print Network [OSTI]

    Miloslav Znojil

    2009-11-02

    A discrete $N-$point Runge-Kutta version $H^{(N)}({\\lambda})$ of one of the simplest non-Hermitian square-well Hamiltonians with real spectrum is studied. A complete set of its possible hermitizations (i.e., of the eligible metrics $\\Theta^{(N)}({\\lambda})$ defining its non-equivalent physical Hilbert spaces of states) is constructed, in closed form, for any coupling ${\\lambda}\\in (-1,1)$ and any matrix dimension $N$.

  19. Realizing non-Abelian gauge potentials in optical square lattices: Application to atomic Chern insulators

    E-Print Network [OSTI]

    N. Goldman; F. Gerbier; M. Lewenstein

    2013-04-19

    We describe a scheme to engineer non-Abelian gauge potentials on a square optical lattice using laser-induced transitions. We emphasize the case of two-electron atoms, where the electronic ground state g is laser coupled to a metastable state e within a state-dependent optical lattice. In this scheme, the alternating pattern of lattice sites hosting g and e states depict a checkerboard structure, allowing for laser-assisted tunneling along both spatial directions. In this configuration, the nuclear spin of the atoms can be viewed as a "flavor" quantum number undergoing non-Abelian tunneling along nearest-neighbor links. We show that this technique can be useful to simulate the equivalent of the Haldane quantum Hall model using cold atoms trapped in square optical lattices, offering an interesting route to realize Chern insulators. The emblematic Haldane model is particularly suited to investigate the physics of topological insulators, but requires, in its original form, complex hopping terms beyond nearest-neighboring sites. In general, this drawback inhibits a direct realization with cold atoms, using standard laser-induced tunneling techniques. We demonstrate that a simple mapping allows to express this model in terms of matrix hopping operators, that are defined on a standard square lattice. This mapping is investigated for two models that lead to anomalous quantum Hall phases. We discuss the practical implementation of such models, exploiting laser-induced tunneling methods applied to the checkerboard optical lattice.

  20. Interband magneto-spectroscopy in InSb square and parabolic quantum wells

    SciTech Connect (OSTI)

    Kasturiarachchi, T.; Edirisooriya, M.; Mishima, T. D.; Doezema, R. E.; Santos, M. B.; Saha, D.; Pan, X.; Sanders, G. D.; Stanton, C. J.

    2015-06-07

    We measure the magneto-optical absorption due to intersubband optical transitions between conduction and valence subband Landau levels in InSb square and parabolic quantum wells. InSb has the narrowest band gap (0.24?eV at low temperature) of the III–V semiconductors leading to a small effective mass (0.014 m{sub 0}) and a large g–factor (?51). As a result, the Landau level spacing is large at relatively small magnetic fields (<8?T), and one can observe spin-splitting of the Landau levels. We examine two structures: (i) a multiple-square-well structure and (ii) a structure containing multiple parabolic wells. The energies and intensities of the strongest features are well explained by a modified Pidgeon-Brown model based on an 8-band k•p model that explicitly incorporates pseudomorphic strain. The strain is essential for obtaining agreement between theory and experiment. While modeling the square well is relatively straight-forward, the parabolic well consists of 43 different layers of various thickness to approximate a parabolic potential. Agreement between theory and experiment for the parabolic well validates the applicability of the model to complicated structures, which demonstrates the robustness of our model and confirms its relevance for developing electronic and spintronic devices that seek to exploit the properties of the InSb band structure.

  1. Gentrifying geriatrics : challenging design paradigms for the aged and aging

    E-Print Network [OSTI]

    Van der Linde, Gerhard J. (Gerhard Johan)

    2011-01-01

    Internationally the world is undergoing a grey revolution, with the average age of the human population being higher than it has ever been before. Within the U.S. context this trend is driven by the Baby Boomers, the 80 ...

  2. AGING SYSTEM DESIGN DEVELOPMENT STRATEGY

    SciTech Connect (OSTI)

    J. Beesley

    2005-02-07

    This plan provides an overview, work to date, and the path forward for the design development strategy of the Aging cask for aging commercial spent nuclear fuel (CSNF) at the Yucca Mountain Project (YMP) repository site. Waste for subsurface emplacement at the repository includes US Department of Energy (DOE) high-level radioactive waste (HLW), DOE SNF, commercial fuel in dual-purpose canisters (DPCs), uncanistered bare fuel, naval fuel, and other waste types. Table 1-1 lists the types of radioactive materials that may be aged at YMP, and those materials that will not be placed in an aging cask or module. This plan presents the strategy for design development of the Aging system. The Aging system will not handle naval fuel, DOE HLW, MCOs, or DOE SNF since those materials will be delivered to the repository in a state and sequence that allows them to be placed into waste packages for emplacement. Some CSNF from nuclear reactors, especially CSNF that is thermally too hot for emplacement underground, will need to be aged at the repository.

  3. Brothers, Sisters and Aging Parents 

    E-Print Network [OSTI]

    Isbell, Lou

    1999-09-02

    Adult children play a crucial role in helping aging parents. When relationships with siblings are poor, everyone suffers. Brothers and sisters can build strong relationships and unite in caring for elderly parents when they learn to relate to each...

  4. Cell Senescence: Aging and Cancer

    ScienceCinema (OSTI)

    Campisi, Judith

    2013-05-29

    Scientists have identified a molecular cause behind the ravages of old age and in doing so have also shown how a natural process for fighting cancer in younger persons can actually promote cancer in older individuals.

  5. Accelerated Aging of Roofing Surfaces

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Accelerated aging of roofing surfaces Hugo Destaillats, Ph.D. Lawrence Berkeley National Laboratory HDestaillats@LBL.gov (510) 486-5897 http:HeatIsland.LBL.gov April 4, 2013...

  6. Lower bound on the mean square displacement of particles in the hard disk model

    E-Print Network [OSTI]

    Thomas Richthammer

    2015-04-30

    The hard disk model is a 2D Gibbsian process of particles interacting via pure hard core repulsion. At high particle density the model is believed to show orientational order, however, it is known not to exhibit positional order. Here we investigate to what extent particle positions may fluctuate. We consider a finite volume version of the model in a box of dimensions $2n \\times 2n$ with arbitrary boundary configuration,and we show that the mean square displacement of particles near the center of the box is bounded from below by $c \\log n$. The result generalizes to a large class of models with fairly arbitrary interaction.

  7. New self-assembly luminescent molecular triangle and square rhenium(I) complexes

    SciTech Connect (OSTI)

    Sun, S.S.; Lees, A.J.

    1999-09-20

    The design and study of well-arranged metal-containing macrocycles is one of the major current research areas in modern supramolecular chemistry. Apart from their particular structural features, supramolecular species formed by self-assembly of transition metals introduce many special functional properties such as luminescence, redox activity, and magnetism into the structure. More recently, transition metal based molecular squares have been synthesized by utilizing self-assembly of preorganized metal centers and pyridine-based bridging ligands. The 90{degree} bonding angles between ligands in transition metal complexes provide an attractive feature for constructing macrocyclic structures.

  8. The effect of interelement dipole coupling in patterned ultrathin single crystal Fe square arrays

    SciTech Connect (OSTI)

    Sun Li; Zhai Ya; Wong Pingkwanj; Zhang Wen; Xu Yongbing; Zou Xiao; Wu Jing; Luo Linqiang; Zhai Hongru

    2011-02-01

    The correlation between the magnetic properties and the interelement separation in patterned arrays of ultrathin single crystal Fe films of 12 monolayers (ML) grown on GaAs(100) has been studied. The critical condition to form single domain remanent states in the square elements was found to be 10 {mu}m in size and 20 {mu}m for the interelement separation. The coercivity was also found to increase with the increasing interelement separation in the patterned arrays. These results are attributed to the competition between the large in-plane uniaxial anisotropy, the demagnetizing field, and interelement dipole coupling as determined semiqualitatively by the ferromagnetic resonance measurements.

  9. Non-intersecting squared Bessel paths: critical time and double scaling limit

    E-Print Network [OSTI]

    A. B. J. Kuijlaars; A. Martinez-Finkelshtein; F. Wielonsky

    2010-11-04

    We consider the double scaling limit for a model of $n$ non-intersecting squared Bessel processes in the confluent case: all paths start at time $t=0$ at the same positive value $x=a$, remain positive, and are conditioned to end at time $t=1$ at $x=0$. After appropriate rescaling, the paths fill a region in the $tx$--plane as $n\\to \\infty$ that intersects the hard edge at $x=0$ at a critical time $t=t^{*}$. In a previous paper (arXiv:0712.1333), the scaling limits for the positions of the paths at time $t\

  10. Sub-mm tests of the gravitational inverse-square law

    E-Print Network [OSTI]

    E. G. Adelberger

    2002-02-02

    Sub-mm tests of the gravitational inverse-square law are interesting from several quite different perspectives. This paper discusses work by the Eot-Wash group performed since the publication of our initial result in February 2001. We find no evidence for short-range Yukawa interactions. Our results provide an upper limit of 200 micrometers on the size of the largest ``extra'' dimension, and for the unification scenario with 2 large extra dimensions, set an upper limit of 150 micrometers on the size of those dimensions.

  11. Review of the Palisades pressure vessel accumulated fluence estimate and of the least squares methodology employed

    SciTech Connect (OSTI)

    Griffin, P.J.

    1998-05-01

    This report provides a review of the Palisades submittal to the Nuclear Regulatory Commission requesting endorsement of their accumulated neutron fluence estimates based on a least squares adjustment methodology. This review highlights some minor issues in the applied methodology and provides some recommendations for future work. The overall conclusion is that the Palisades fluence estimation methodology provides a reasonable approach to a {open_quotes}best estimate{close_quotes} of the accumulated pressure vessel neutron fluence and is consistent with the state-of-the-art analysis as detailed in community consensus ASTM standards.

  12. Squaring the Circle in Biofuels? | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe23-24, 2011Science (SC) RedefiningSign Up forDaktoaSquaring

  13. Multi-Scale Experiments in Turbulent Subcooled Boiling Flow Through a Square Channel with a Single Heated Wall 

    E-Print Network [OSTI]

    Estrada Perez, Carlos Eduardo

    2014-12-12

    flow through a square channel. The explored visualization techniques were: 1) Particle tracking velocimetry (PTV), which provides velocity measurements of the liquid phase, 2) High-speed shadowgraphy (HSS) which is used to study the dispersed phase...

  14. Measurement of the Isolated Prompt Photon Production Cross Section in pp Collisions at [square root] s=7??TeV

    E-Print Network [OSTI]

    Alver, Burak Han

    The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy ET? [E subscript Tau superscript gamma] in pp collisions at ?s=7??[square ...

  15. Dijet Azimuthal Decorrelations in pp Collisions at ?s=7? [square root of s=7]?TeV

    E-Print Network [OSTI]

    Alver, Burak Han

    Measurements of dijet azimuthal decorrelations in pp collisions at ?s=7??[square root of s=7] TeV using the CMS detector at the CERN LHC are presented. The analysis is based on an inclusive dijet event sample corresponding ...

  16. The SQUARE-NURSE merger in Greater Manchester : the impact of social and spatial identity on phonological variation 

    E-Print Network [OSTI]

    Barras, William

    2006-01-01

    This study examines the SQUARE/NURSE merger in three neighbouring locations in Greater Manchester. Several approaches are used to provide explanations for the geographical patterns of variation that are observed. These ...

  17. Pion femtoscopy in p?+?p collisions at ?s=200 [square root of s = 200] GeV

    E-Print Network [OSTI]

    Balewski, Jan T.

    The STAR Collaboration at the BNL Relativistic Heavy Ion Collider has measured two-pion correlation functions from p+p collisions at ?s=200 [square root of s = 200] GeV. Spatial scales are extracted via a femtoscopic ...

  18. Measurements of wall heat (mass) transfer for flow through blockages with round and square holes in a wide rectangular channel 

    E-Print Network [OSTI]

    Cervantes, Joel

    2002-01-01

    Naphthalene sublimation and pressure measurement experiments were conducted to study heat (mass) transfer enhancement by blockages with staggered round and square holes for turbulent air flows through the holes in the blockages in an 8:1 rectangular...

  19. Least-squares variational principles and the finite element method: theory, formulations, and models for solid and fluid mechanics 

    E-Print Network [OSTI]

    Pontaza, Juan Pablo

    2004-09-30

    We consider the application of least-squares variational principles and the finite element method to the numerical solution of boundary value problems arising in the fields of solidand fluidmechanics.For manyof these ...

  20. Alternative Least-Squares Finite Element Models of Navier-Stokes Equations for Power-Law Fluids 

    E-Print Network [OSTI]

    Vallala, Venkat

    2010-01-16

    -Squares formulations of the original partial differential equations (PDE's) in terms of primary variables require C1 continuity of the finite element spaces across inter-element boundaries. This higherorder continuity requirement for PDE's in primary variables is a...

  1. Minimizing Leakage Energy in FPGAs Using Intentional Post-Silicon Device Aging

    E-Print Network [OSTI]

    Wei, Sheng

    2013-01-01

    Aging Model . . . . . . . . . . . . . . . . . . . . .Aging Configuration . . . . . . . . . . . . . .Limitation . . . . . . . . . . . . . . . . . 6 Aging-based

  2. Heat Transfer and Pressure Drop Measurement for Square Channels with V-shape Ribs at High Reynolds Numbers 

    E-Print Network [OSTI]

    Alkhamis, Nawaf Yahya

    2010-10-12

    for the degree of MASTER OF SCIENCE August 2009 Major Subject: Mechanical Engineering HEAT TRANSFER AND PRESSURE DROP MEASUREMENT FOR SQUARE CHANNELS WITH V-SHAPE RIBS AT HIGH REYNOLDS NUMBERS A Thesis by NAWAF YAHYA ALKHAMIS... of Department, Dennis O?Neal August 2009 Major Subject: Mechanical Engineering iii ABSTRACT Heat Transfer and Pressure Drop Measurement for Square Channels with V-shape Ribs at High Reynolds Numbers. (August 2009) Nawaf Yahya Alkhamis, B.Sc King...

  3. Heat transfer and friction in a square channel with one-wall or two-wall rib turbulators 

    E-Print Network [OSTI]

    Huang, Jie Joy

    1991-01-01

    of MASTER OF SCIENCE December 1991 Major Subject: Mechanical Engineering HEAT TRANSFER AND FRICTION IN A SQUARE CHANNEI WITH ONE-WAIL OR TWO-WALL RIB TURBULATORS A Thesis by JIE JOY HUANG Approved as to style snd content by: J. C. Han (Chair.... , Shanghai Institute of Mechanical Engineering Chair of Advisory Committee: Dr. J. C, Han This experimental program studies the effect of the wall heat flux ratio on the local heat transfer distributions and pressure drop in a square channel...

  4. Full lineup serves wide variety of processing needs DAD3220, 3230 or 3430 is a one-axis dicing saw for 6-inch (6-inch square)

    E-Print Network [OSTI]

    for ø6-inch (6-inch square) workpieces. DAD3220, just 500 mm wide, helps conserve valuable cleanroom

  5. Melatonin, oxidative stress and the aging brain

    E-Print Network [OSTI]

    Bondy, SC; Sharman, EH

    2010-01-01

    markers in healthy aging and Alzheimer’s disease.Neurobiol Aging. 8. Kim R, Emi M, Tanabe K. Role ofFree radicals and brain aging. Clin Geriatr Med. 2004;20:

  6. Telomere lengthening to antagonize myocardial aging

    E-Print Network [OSTI]

    Cottage, Christopher Travis; Cottage, Christopher Travis

    2012-01-01

    targets to antagonize the aging phenotype. FIGURES Figureday Pim-wt. Figure 2.2: Cellular aging markers over time. A.stem cell and myocyte aging, heart failure, and insulin-like

  7. Fracture, aging and disease in bone

    E-Print Network [OSTI]

    Ager, J.W.; Balooch, G.; Ritchie, R.O.

    2006-01-01

    and R. O. Ritchie: Effect of aging on the toughness of humanof microstructure in the aging-related deterioration of thestudy of the effect of aging on human cortical bone J.

  8. Neural correlates of successful cognitive aging

    E-Print Network [OSTI]

    Kaup, Allison Renee

    2012-01-01

    default network" in normal aging. Cereb Cortex, 18(8), 1856-The posterior-anterior shift in aging. Cereb Cortex, 18(5),atrophy evident in healthy aging. J Neurosci, Fjell, A. M. ,

  9. Elucidating mechanisms of accelerated neurological aging

    E-Print Network [OSTI]

    Greenhall, Jennifer Anne

    2008-01-01

    C. (2005). Mechanisms of aging in senescence- accelerated2.2 Strain-specific aging gene-expression profiles…………………..C. (2005). Mechanisms of aging in senescence-accelerated

  10. Self-assembly molecular squares with metal complexes as bridging ligands

    SciTech Connect (OSTI)

    Sun, S.S.; Silva, A.S.; Brinn, I.M.; Lees, A.J.

    2000-04-03

    Polynuclear transition metal complexes containing multichromophoric units, such as metal polypyridyl complexes, are of considerable current interest. Much attention has been paid to the synthesis of multicomponent systems that exhibit photoinduced intercomponent electron and/or energy-transfer processes and to their potential applications for photonic and electronic devices. Systems incorporating Re(I)- Ru(II)-, and Os(II)-based polypyridyl chromophores are the most commonly studied because of their favorable redox and spectroscopic characteristics. In this communication, the authors combine the concepts of self-assembly and complexes as ligands and report the preparation of a series of molecular squares with the general molecular formula [fac-Br(CO){sub 3}Re({mu}-(pyterpy){sub 2}M)]{sub 4}(PF{sub 6}){sub 8}, where pyterpy is 4{prime}-(4{prime}{double_prime}-pyridyl)-2,2{prime}:6{prime}2{double_prime}-terpyridine and M = Fe, Ru, or Os. The spectroscopic properties and a preliminary anion binding study of these novel octanuclear molecular squares are also presented.

  11. Solar-energy-system performance evaluation, Cathedral Square, Burlington, Vermont, July-December 1981

    SciTech Connect (OSTI)

    Welch, K.M.

    1981-01-01

    The Cathedral Square solar site is a 10-story multiunit apartment building in Vermont. Its active solar energy system is designed to supply 51% of the hot water load, and consists of 1798 square feet of flat plate collectors, 2699-gallon water tank in an enclosed mechanical room on the roof, and two auxiliary natural gas boilers to supply hot water to immersed heat exchanger in an auxiliary storage tank. The measured solar fraction was only 28%, not 51%, which, it is concluded, is an unreasonable expectation. Other performance data include the solar savings ratio, conventional fuel savings, system performance factor, and solar system coefficient of performance. Monthly performance data are given for the solar system overall, and for the collector, storage, and hot water subsystems. Also included are insolation data, typical storage fluid temperatures, domestic hot water consumption, and solar heat exchangers inlet/outlet temperatures, and typical domestic hot water subsystem temperatures. In addition, the system operating sequence and solar energy utilization are given. Appended are a system description, performance evaluation techniques, long-term weather data. (LEW)

  12. AGEING & SEXING AGEING AND SEXING OF THE AFRICAN

    E-Print Network [OSTI]

    de Villiers, Marienne

    with narrow lime greel gr bases, Eving a moftled appea.rance when ihey yellow Tgrgns on the outer web lighter as the are blackish or dark brown with very thin lime plumage ages. Blackish ones liqime brown-withavariableamolntoflimeg{een the iris biown or dark brown. The legs ind on the.-fringeq 9{ttre feathers

  13. Non-uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    uniform Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts Non-uniform Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts CuZeolite SCR catalysts...

  14. Transportation, Aging and Disposal Canister System Performance...

    Broader source: Energy.gov (indexed) [DOE]

    document provides specifications for selected system components of the Transportation, Aging and Disposal (TAD) canister-based system. Transportation, Aging and Disposal Canister...

  15. Understanding aging in pentaerythritol tetranitrate

    SciTech Connect (OSTI)

    Brown, Geoffrey W; Sandstrom, Mary M; Giambra, Anna M; Archuleta, Jose G; Monroe, Deidre C

    2009-01-01

    Pentaerythritol Tetranitrate (PETN) powder is commonly used in detonators because of its sensitivity and explosive power. PETN detonation is largely determined by the average PETN particle size. This is an issue for aging and storage of weapons because PETN has a relatively high vapor pressure and its average particle size changes due to thermal energy input from the environment. PETN aging is a well known problem although the mechanism is not well understood. It is important to understand PETN aging so that predictive models can be constructed that will benefit stockpile surveillance and lifetime extension programs. PETN particles are known to coarsen over time at relatively low temperatures. Particle coarsening requires mass redistribution since decomposition causes powders to become finer as PETN mass is lost. Two possible mechanisms for mass redistribution are vapor phase transfer via sublimation-redeposition and solid-state mass transfer through surface diffusion. In this work we have examined PETN powders us ing permeability, atomic force microscopy (AFM), and optical microscopy based particle analysis. The results of these measurements lead us to a suggested coarsening mechanism that we reproduce with rudimentary simulations. The physical mechanisms used in the simulations are then used to create an empirical model of the coarsening that may be used to make predictions of PETN aging. In the future we will be measuring the vapor pressures and other physical properties of our powders to be able to make predictions using simulations.

  16. The Age of a Deer. 

    E-Print Network [OSTI]

    Ramsey, Charles W.; Shult, Milo J.

    1983-01-01

    of a Deer Charles W. Ramsey and Milo J. Shu/t Extension Wildlife Specialists The Texas A&M University System Tooth eruption and wear in deer are closely related to the age of the animal. Deer shed and replace milk teeth with permanent teeth at con...

  17. Optical pattern recognition architecture implementing the mean-square error correlation algorithm

    DOE Patents [OSTI]

    Molley, Perry A. (Albuquerque, NM)

    1991-01-01

    An optical architecture implementing the mean-square error correlation algorithm, MSE=.SIGMA.[I-R].sup.2 for discriminating the presence of a reference image R in an input image scene I by computing the mean-square-error between a time-varying reference image signal s.sub.1 (t) and a time-varying input image signal s.sub.2 (t) includes a laser diode light source which is temporally modulated by a double-sideband suppressed-carrier source modulation signal I.sub.1 (t) having the form I.sub.1 (t)=A.sub.1 [1+.sqroot.2m.sub.1 s.sub.1 (t)cos (2.pi.f.sub.o t)] and the modulated light output from the laser diode source is diffracted by an acousto-optic deflector. The resultant intensity of the +1 diffracted order from the acousto-optic device is given by: I.sub.2 (t)=A.sub.2 [+2m.sub.2.sup.2 s.sub.2.sup.2 (t)-2.sqroot.2m.sub.2 (t) cos (2.pi.f.sub.o t] The time integration of the two signals I.sub.1 (t) and I.sub.2 (t) on the CCD deflector plane produces the result R(.tau.) of the mean-square error having the form: R(.tau.)=A.sub.1 A.sub.2 {[T]+[2m.sub.2.sup.2.multidot..intg.s.sub.2.sup.2 (t-.tau.)dt]-[2m.sub.1 m.sub.2 cos (2.tau.f.sub.o .tau.).multidot..intg.s.sub.1 (t)s.sub.2 (t-.tau.)dt]} where: s.sub.1 (t) is the signal input to the diode modulation source: s.sub.2 (t) is the signal input to the AOD modulation source; A.sub.1 is the light intensity; A.sub.2 is the diffraction efficiency; m.sub.1 and m.sub.2 are constants that determine the signal-to-bias ratio; f.sub.o is the frequency offset between the oscillator at f.sub.c and the modulation at f.sub.c +f.sub.o ; and a.sub.o and a.sub.1 are constant chosen to bias the diode source and the acousto-optic deflector into their respective linear operating regions so that the diode source exhibits a linear intensity characteristic and the AOD exhibits a linear amplitude characteristic.

  18. Synergy between the Large Synoptic Survey Telescope and the Square Kilometre Array

    E-Print Network [OSTI]

    Bacon, David; Abdalla, Filipe B; Brown, Michael; Bull, Philip; Camera, Stefano; Fender, Rob; Grainge, Keith; Ivezic, Zeljko; Jarvis, Matt; Jackson, Neal; Kirk, Donnacha; Mann, Bob; McEwen, Jason; McKean, John; Newman, Jeffrey A; Raccanelli, Alvise; Sahlen, Martin; Santos, Mario; Tyson, Anthony; Zhao, Gong-Bo

    2015-01-01

    We provide an overview of the science benefits of combining information from the Square Kilometre Array (SKA) and the Large Synoptic Survey Telescope (LSST). We first summarise the capabilities and timeline of the LSST and overview its science goals. We then discuss the science questions in common between the two projects, and how they can be best addressed by combining the data from both telescopes. We describe how weak gravitational lensing and galaxy clustering studies with LSST and SKA can provide improved constraints on the causes of the cosmological acceleration. We summarise the benefits to galaxy evolution studies of combining deep optical multi-band imaging with radio observations. Finally, we discuss the excellent match between one of the most unique features of the LSST, its temporal cadence in the optical waveband, and the time resolution of the SKA.

  19. The Origin of Magnetic Fields in Galaxies: Observational Tests with the Square Kilometre Array

    E-Print Network [OSTI]

    Rainer Beck

    2006-04-07

    The all-sky survey of Faraday rotation, a Key Science Project of the planned Square Kilometre Array, will accumulate tens of millions of rotation measure measurements toward background radio sources and will provide a unique database for characterizing the overall magnetic geometry of magnetic fields in galaxies and in the intergalactic medium. Deep imaging of the polarized synchrotron emission from a large number of nearby galaxies, combined with Faraday rotation data, will allow us to test the primordial, flow and dynamo models for field origin and amplification. The SKA will find the first fields in young galaxies and determine the timescale for building up small-scale turbulent and large-scale coherent fields. The spectrum of dynamo modes, if existing, will be resolved. The direction of the present-day coherent field keeps memory of the direction of the seed field which can be used for mapping the structure of the seed field before galaxy formation.

  20. Time domain studies of Active Galactic Nuclei with the Square Kilometre Array

    E-Print Network [OSTI]

    Bignall, Hayley; Hovatta, Talvikki; Koay, Jun Yi; Lazio, Joseph; Macquart, Jean-Pierre; Reynolds, Cormac

    2015-01-01

    Variability of radio-emitting active galactic nuclei can be used to probe both intrinsic variations arising from shocks, flares, and other changes in emission from regions surrounding the central supermassive black hole, as well as extrinsic variations due to scattering by structures in our own Galaxy. Such interstellar scattering also probes the structure of the emitting regions, with microarcsecond resolution. Current studies have necessarily been limited to either small numbers of objects monitored over long periods of time, or large numbers of objects but with poor time sampling. The dramatic increase in survey speed engendered by the Square Kilometre Array will enable precision synoptic monitoring studies of hundreds of thousands of sources with a cadence of days or less. Statistics of variability, in particular concurrent observations at multiple radio frequencies and in other bands of the electromagnetic spectrum, will probe accretion physics over a wide range of AGN classes, luminosities, and orientat...

  1. Chi-Square Discriminators for Transiting Planet Detection in Kepler Data

    E-Print Network [OSTI]

    Seader, Shawn; Jenkins, Jon M; Burke, Christopher J

    2013-01-01

    The Kepler spacecraft observes a host of target stars to detect transiting planets. Requiring a 7.1 sigma detection in twelve quarters of data yields over 100,000 detections, many of which are false alarms. After a second cut is made on a robust detection statistic, some 50,000 or more targets still remain. These false alarms waste resources as they propagate through the remainder of the software pipeline and so a method to discriminate against them is crucial in maintaining the desired sensitivity to true events. This paper describes a chi-square test which represents a novel application of the formalism developed by Allen for false alarm mitigation in searches for gravitational waves. Using this technique, the false alarm rate can be lowered to ~5%.

  2. Constraints on Light Pseudoscalars Implied by Tests of the Gravitational Inverse-Square Law

    E-Print Network [OSTI]

    Ephraim Fischbach; Dennis E. Krause

    1999-06-03

    The exchange of light pseudoscalars between fermions leads to a spin-independent potential in order g^4, where g is the Yukawa pseudoscalar-fermion coupling constant. This potential gives rise to detectable violations of both the weak equivalence principle (WEP) and the gravitational inverse-square law (ISL), even if g is quite small. We show that when previously derived WEP constraints are combined with those arisingfrom ISL tests, a direct experimental limit on the Yukawa coupling of light pseudoscalars to neutrons can be inferred for the first time (g_n^2/4pi < 1.6 \\times 10^-7), along with a new (and significantly improved) limit on the coupling of light pseudoscalars to protons.

  3. Multivariate analysis of remote LIBS spectra using partial least squares, principal component analysis, and related techniques

    SciTech Connect (OSTI)

    Clegg, Samuel M; Barefield, James E; Wiens, Roger C; Sklute, Elizabeth; Dyare, Melinda D

    2008-01-01

    Quantitative analysis with LIBS traditionally employs calibration curves that are complicated by the chemical matrix effects. These chemical matrix effects influence the LIBS plasma and the ratio of elemental composition to elemental emission line intensity. Consequently, LIBS calibration typically requires a priori knowledge of the unknown, in order for a series of calibration standards similar to the unknown to be employed. In this paper, three new Multivariate Analysis (MV A) techniques are employed to analyze the LIBS spectra of 18 disparate igneous and highly-metamorphosed rock samples. Partial Least Squares (PLS) analysis is used to generate a calibration model from which unknown samples can be analyzed. Principal Components Analysis (PCA) and Soft Independent Modeling of Class Analogy (SIMCA) are employed to generate a model and predict the rock type of the samples. These MV A techniques appear to exploit the matrix effects associated with the chemistries of these 18 samples.

  4. Spin-dependent Seebeck effects in a graphene nanoribbon coupled to two square lattice ferromagnetic leads

    SciTech Connect (OSTI)

    Zhou, Benhu Zeng, Yangsu; Zhou, Benliang; Zhou, Guanghui; Ouyang, Tao

    2015-03-14

    We theoretically investigate spin-dependent Seebeck effects for a system consisting of a narrow graphene nanoribbon (GNR) contacted to square lattice ferromagnetic (FM) electrodes with noncollinear magnetic moments. Both zigzag-edge graphene nanoribbons (ZGNRs) and armchair-edge graphene nanoribbons (AGNRs) were considered. Compared with our previous work with two-dimensional honeycomb-lattice FM leads, a more realistic model of two-dimensional square-lattice FM electrodes is adopted here. Using the nonequilibrium Green's function method combining with the tight-binding Hamiltonian, it is demonstrated that both the charge Seebeck coefficient S{sub C} and the spin-dependent Seebeck coefficient S{sub S} strongly depend on the geometrical contact between the GNR and the leads. In our previous work, S{sub C} for a semiconducting 15-AGNR system near the Dirac point is two orders of magnitude larger than that of a metallic 17-AGNR system. However, S{sub C} is the same order of magnitude for both metallic 17-AGNR and semiconducting 15-AGNR systems in the present paper because of the lack of a transmission energy gap for the 15-AGNR system. Furthermore, the spin-dependent Seebeck coefficient S{sub S} for the systems with 20-ZGNR, 17-AGNR, and 15-AGNR is of the same order of magnitude and its maximum absolute value can reach 8??V/K. The spin-dependent Seebeck effects are not very pronounced because the transmission coefficient weakly depends on spin orientation. Moreover, the spin-dependent Seebeck coefficient is further suppressed with increasing angle between the relative alignments of magnetization directions of the two leads. Additionally, the spin-dependent Seebeck coefficient can be strongly suppressed for larger disorder strength. The results obtained here may provide valuable theoretical guidance in the experimental design of heat spintronic devices.

  5. SYNCHROTRON AGING IN FILAMENTED MAGNETIC FIELDS

    E-Print Network [OSTI]

    Eilek, Jean

    SYNCHROTRON AGING IN FILAMENTED MAGNETIC FIELDS J. A. EILEK 1;2 , D. B. MELROSE 2 and M.A. WALKER 2 radio sources whose dynamical ages are known to be significantly greater than the ages inferred from; In addition, it is becoming increasingly clear that radio galaxies suffer from an ``aging problem

  6. Neurocognitive Aging and the Compensation Hypothesis

    E-Print Network [OSTI]

    Neurocognitive Aging and the Compensation Hypothesis Patricia A. Reuter-Lorenz and Katherine A imaging studies of cognitive aging is evidence for age-related overactivation: greater acti- vation in older adults than in younger adults, even when performance is age-equivalent. Here we examine the hy

  7. U.S. Footage Drilled for Crude Oil Developmental Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)Estimated Production2009JuneBarrels)Developmental

  8. U.S. Footage Drilled for Crude Oil Exploratory Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)Estimated Production2009JuneBarrels)Developmental

  9. U.S. Footage Drilled for Crude Oil Exploratory and Developmental Wells

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)Estimated

  10. U.S. Footage Drilled for Crude Oil, Natural Gas, and Dry Developmental

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet) Developmental Wells

  11. U.S. Footage Drilled for Crude Oil, Natural Gas, and Dry Exploratory Wells

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet) Developmental

  12. U.S. Footage Drilled for Crude Oil, Natural Gas, and Dry Exploratory and

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet)

  13. U.S. Footage Drilled for Crude Oil, Natural Gas, and Dry Exploratory and

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet)Developmental Wells

  14. U.S. Footage Drilled for Dry Developmental Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet)Developmental

  15. U.S. Footage Drilled for Dry Exploratory Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet)Developmental Wells

  16. U.S. Footage Drilled for Dry Exploratory and Developmental Wells (Thousand

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Feet)Developmental

  17. U.S. Footage Drilled for Natural Gas Developmental Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand

  18. U.S. Footage Drilled for Natural Gas Exploratory Wells (Thousand Feet)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Wells (Thousand Feet) U.S.

  19. U.S. Footage Drilled for Natural Gas Exploratory and Developmental Wells

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved Reserves (Billion Cubic Feet)EstimatedWells (Thousand Wells (Thousand Feet)

  20. The video footage of urban slums in developing countries --whether it's

    E-Print Network [OSTI]

    Bedwell, David M.

    to be a part of it." Education, poverty and health care are popular topics for the students. Some have a desire get first-hand look at living in poverty Students from the Global and Community Leadership Honors

  1. U.S. Footage Drilled for Crude Oil, Natural Gas, and Dry Exploratory and

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProved ReservesCubicper ThousandFeet) and TableTopBarrels) Natural Gas Plant

  2. Hanford F Reactor Inspection B-roll footage | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-Dose Lowï‚—34October 2014 OctoberChallengeDepartment

  3. The Age of Beta Pic

    E-Print Network [OSTI]

    D. Barrado y Navascues; J. R. Stauffer; I. Song; J-P. Caillault

    1999-05-19

    We have reanalyzed data for the proposed moving group associated with beta Pic in order to determine if the group (or part of it) is real, and, if so, to derive an improved age estimate for beta Pic. By using new, more accurate proper motions from PPM and Hipparcos and a few new radial velocities, we conclude that on kinematic grounds, two M dwarfs have space motions that coincide with that of beta Pic to within 1 km/s with small error bars. Based on a CM diagram derived from accurate photometry and Hipparcos parallaxes, these two possible proper-motion companions to beta Pic are very young; we derive an age of $\\sim$20 Myr by comparison to theoretical tracks from D'Antona & Mazzitelli. In fact, the proposed beta Pic companions comprise two of the three youngest M dwarfs in the sample of 160 dM stars for which we have data. The chromospheric and coronal activity of these two stars also confirm that they are quite young. We argue that the probability that two of the three youngest nearby M dwarfs would accurately share the space motion of beta Pic by chance is quite small, and therefore we believe that beta Pic and the two M dwarfs (GL 799 and GL 803) were formed together. The estimated age for beta Pic is then 20$\\pm$10 Myr.

  4. Neural Effects of Beta Amyloid in Normal Aging

    E-Print Network [OSTI]

    Mormino, Elizabeth Charlotte

    2011-01-01

    age   categories.  Neurobiol  Aging  1997;  18:  351-­?7.  JK,  McIntosh  AR.  Aging  gracefully:  compensatory  B.  The  effect  of  normal  aging  on  the  coupling  of  

  5. Book: Aging and Oxidants in Animals and Plants Aging and oxidants in the nematode Caenorhabditis elegans

    E-Print Network [OSTI]

    Gems, David

    Book: Aging and Oxidants in Animals and Plants Aging and oxidants in the nematode Caenorhabditis;1.1 Testing the oxidative damage theory of aging in C. elegans The biology of aging remains poorly understood. For example, it remains unclear what sort of biological processes are the primary determinants of aging

  6. Aging discrepancies of white spruce affect the interpretation of static age structure in boreal

    E-Print Network [OSTI]

    Macdonald, Ellen

    NOTE Aging discrepancies of white spruce affect the interpretation of static age structure. Our objectives were to determine whether ground-level ring counts underestimate root collar age of understory P. glauca and whether aging errors increase with stand age. Trees were collected from one to nine

  7. Aging of Pentaerythritol Tetranitrate (PETN)

    SciTech Connect (OSTI)

    Foltz, M F

    2009-04-22

    Pentaerythritol tetranitrate (PETN) is a relatively sensitive explosive used in many electroexplosive devices as well as in medicine. Of primary interest to LLNL is its use in items such as exploding bridgewire (EBW) detonators and exploding bridge foil initiators (EFI). In these devices the crystalline powder is pressed into a granular, low-density compact that can be initiated by an exploding wire or foil. The long-term stability of this pressed compact is of interest to weapon stockpile lifetime prediction studies. Key points about potential aging mechanisms can be summarized as follows: (1) There are a number of factors that can contribute to PETN instability. These include particle size, polymorphic phase transitions, crystal structure, impurities, moisture, occlusions, chemical incompatibility and biological (microorganism) action. of these factors the most important for long-term aging of high surface area powders used in detonators appears to be that of particle size growth. (2) There is a great deal of literature on the thermal degradation kinetics of PETN, unfortunately much of it with little bearing on ambient temperature aging during long-term storage. PETN is very stable with respect to thermal decomposition. Low-temperature thermal studies have not revealed evidence of chemical degradation products in archived PETN. Data extrapolated to 30 C predicts a half-life of 12 million years. (3) Moisture seems to lower the activation energy for and accelerate the decomposition of PETN. (4) External drivers affecting stability include temperature, moisture, radiation fields, and stress, while internal drivers include residual solvents, and impurities. Temperature affects kinetic processes of crystal growth such as adsorption, desorption, and diffusion rates of molecules on the surface of PETN crystals. A low-level radiation field may induce unexpected changes in the chemical makeup of PETN and its homologue impurities. Stress at high pressure points caused by crystalline surface irregularities may cause a decrease in surface area over time due to smoothing of contact points and sintering. PETN has been found to contain a number of impurities, including homologues, pentaerythryl ethers with a mixture of hydroxyl and nitrate functional groups, and organic salts, that can alter its physical and chemical properties. (5) The processes of sublimation/recrystallization and surface diffusion are important processes that can cause changes in PETN crystal morphology, particle size distribution and specific surface area. Sublimation feeds a process called Ostwald ripening, which involves the spontaneous growth of larger crystals from those of smaller size. This process proceeds with age regardless of storage conditions unless the crystals are treated to retard growth. The coarsening mechanisms include Ostwald ripening, 'sintering', and surface diffusion. The latter has not been experimentally observed, but a molecular modeling approach has attempted to investigate this phenomenon theoretically. (6) Threshold test fire, particle size distribution, specific surface area, thermal analysis, chemical analysis, powder compact specific surface area and density are approaches that have been used in the attempt to assess changes attributable to aging of PETN, with varying results. The biggest problem lies in the aging mechanism itself, which likely influences small changes in morphology, both internal and external, and particle size distribution changes on a scale too small to reliably monitor. Other aspects, such as subtle changes in density profiles within pressed powder compacts, may be beyond the capability of current technology to assess. Crystal growth significant enough to affect the PETN particle size distribution is expected to impact detonator performance. (7) Factors relevant to stabilizing particle size growth include crystal morphology, powder surface area and particle size distribution; crystal density and internal defects; and powder compact density and density gradients.

  8. SNF AGING SYSTEM DESCRIPTION DOCUMENT

    SciTech Connect (OSTI)

    L.L. Swanson

    2005-04-06

    The purpose of this system description document (SDD) is to establish requirements that drive the design of the spent nuclear fuel (SNF) aging system and associated bases, which will allow the design effort to proceed. This SDD will be revised at strategic points as the design matures. This SDD identifies the requirements and describes the system design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This SDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This SDD is part of an iterative design process. It leads the design process with regard to the flow down of upper tier requirements onto the system. Knowledge of these requirements is essential in performing the design process. The SDD follows the design with regard to the description of the system. The description provided in the SDD reflects the current results of the design process. Throughout this SDD, the term aging cask applies to vertical site-specific casks and to horizontal aging modules. The term overpack is a vertical site-specific cask that contains a dual-purpose canister (DPC) or a disposable canister. Functional and operational requirements applicable to this system were obtained from ''Project Functional and Operational Requirements'' (F&OR) (Curry 2004 [DIRS 170557]). Other requirements that support the design process were taken from documents such as ''Project Design Criteria Document'' (PDC) (BSC 2004 [DES 171599]), ''Site Fire Hazards Analyses'' (BSC 2005 [DIRS 172174]), and ''Nuclear Safety Design Bases for License Application'' (BSC 2005 [DIRS 171512]). The documents address requirements in the ''Project Requirements Document'' (PRD) (Canori and Leitner 2003 [DIRS 166275]). This SDD includes several appendices. Appendix A is a Glossary; Appendix B is a list of key system charts, diagrams, drawings, lists and additional supporting information; and Appendix C is a list of procedures that will be used to operate the system.

  9. The New Biology of Ageing A Revolution in Ageing: The New Biology of Ageing and its Implications

    E-Print Network [OSTI]

    Gems, David

    The New Biology of Ageing 1 A Revolution in Ageing: The New Biology of Ageing and its Implications? Philosophische und biowissenschaftliche Perspektiven"(Longer Life: Biological, Medical and Philosophical Perspectives). Eds: Sebastian Knell, Marcel Weber. Surhkamp Verlag, 2009. Summary Until recently the biology

  10. Linear stability of magnetohydrodynamic flow in a square duct with thin conducting walls

    E-Print Network [OSTI]

    Priede, J?nis; Bühler, Leo

    2015-01-01

    This study is concerned with numerical linear stability analysis of liquid metal flow in a square duct with thin electrically conducting walls subject to a uniform transverse magnetic field. We derive an asymptotic solution for the base flow which is valid not only for high but also moderate magnetic fields. This solution shows that for low wall conductance ratios $c\\ll1,$ an extremely strong magnetic field with the Hartmann number $Ha\\sim c^{-4}$ is required to attain the asymptotic flow regime considered in the previous studies. We use a vector stream function/vorticity formulation and a Chebyshev collocation method to solve the eigenvalue problem for three-dimensional small-amplitude perturbations in ducts with realistic wall conductance ratios $c=1,0.1,0.01$ and Hartmann numbers up to $10^{4}.$ As for similar flows, instability in a sufficiently strong magnetic field is found to occur in the side-wall jets with the characteristic thickness $\\delta\\sim Ha^{-1/2}.$ This results in the critical Reynolds numb...

  11. Formation mechanism of hairpin vortices in the wake of a truncated square cylinder in a duct

    E-Print Network [OSTI]

    Dousset, Vincent

    2010-01-01

    We investigate the laminar shedding of hairpin vortices in the wake of a truncated square cylinder placed in a duct, for Reynolds numbers around the critical threshold of the onset of vortex shedding. We single out the formation mechanism of the hairpin vortices by means of a detailed analysis of the flow patterns in the steady regime. We show that unlike in previous studies of similar structures, the dynamics of the hairpin vortices is entwined with that of the counter-rotating pair of streamwise vortices, which we found to be generated in the bottom part of the near wake (these are usually referred to as base vortices). In particular, once the hairpin structure is released, the base vortices attach to it, forming its legs, so these are streamwise, and not spanwise as previously observed in unconfined wakes or behind cylinders of lower aspect ratios. We also single out a trail of Omega-shaped vortices, generated between successive hairpin vortices through a mechanism that is analogous to that active in near-...

  12. Approximate l-fold cross-validation with Least Squares SVM and Kernel Ridge Regression

    SciTech Connect (OSTI)

    Edwards, Richard E [ORNL] [ORNL; Zhang, Hao [ORNL] [ORNL; Parker, Lynne Edwards [ORNL] [ORNL; New, Joshua Ryan [ORNL] [ORNL

    2013-01-01

    Kernel methods have difficulties scaling to large modern data sets. The scalability issues are based on computational and memory requirements for working with a large matrix. These requirements have been addressed over the years by using low-rank kernel approximations or by improving the solvers scalability. However, Least Squares Support VectorMachines (LS-SVM), a popular SVM variant, and Kernel Ridge Regression still have several scalability issues. In particular, the O(n^3) computational complexity for solving a single model, and the overall computational complexity associated with tuning hyperparameters are still major problems. We address these problems by introducing an O(n log n) approximate l-fold cross-validation method that uses a multi-level circulant matrix to approximate the kernel. In addition, we prove our algorithm s computational complexity and present empirical runtimes on data sets with approximately 1 million data points. We also validate our approximate method s effectiveness at selecting hyperparameters on real world and standard benchmark data sets. Lastly, we provide experimental results on using a multi-level circulant kernel approximation to solve LS-SVM problems with hyperparameters selected using our method.

  13. Stochastic earthquake source model: the omega-square hypothesis and the directivity effect

    E-Print Network [OSTI]

    Molchan, G

    2015-01-01

    Recently A. Gusev suggested and numerically investigated the doubly stochastic earthquake source model. The model is supposed to demonstrate the following features in the far-field body waves: 1) the omega-square high-frequency (HF) behavior of displacement spectra; 2) lack of the directivity effect in HF radiation; and 3) a stochastic nature of the HF signal component. The model involves two stochastic elements: the local stress drop (SD) on a fault and the rupture time function (RT) with a linear dominant component. The goal of the present study is to investigate the Gusev model theoretically and to find conditions for (1, 2) to be valid and stable relative to receiver site. The models with smooth elements SD, RT are insufficient for these purposes. Therefore SD and RT are treated as realizations of stochastic fields of the fractal type. The local smoothness of such fields is characterized by the fractional (Hurst) exponent H, 0 < H < 1. This allows us to consider a wide class of stochastic functions ...

  14. Nanocluster building blocks of artificial square spin ice: Stray-field studies of thermal dynamics

    SciTech Connect (OSTI)

    Pohlit, Merlin Porrati, Fabrizio; Huth, Michael; Müller, Jens

    2015-05-07

    We present measurements of the thermal dynamics of a Co-based single building block of an artificial square spin ice fabricated by focused electron-beam-induced deposition. We employ micro-Hall magnetometry, an ultra-sensitive tool to study the stray field emanating from magnetic nanostructures, as a new technique to access the dynamical properties during the magnetization reversal of the spin-ice nanocluster. The obtained hysteresis loop exhibits distinct steps, displaying a reduction of their “coercive field” with increasing temperature. Therefore, thermally unstable states could be repetitively prepared by relatively simple temperature and field protocols allowing one to investigate the statistics of their switching behavior within experimentally accessible timescales. For a selected switching event, we find a strong reduction of the so-prepared states' “survival time” with increasing temperature and magnetic field. Besides the possibility to control the lifetime of selected switching events at will, we find evidence for a more complex behavior caused by the special spin ice arrangement of the macrospins, i.e., that the magnetic reversal statistically follows distinct “paths” most likely driven by thermal perturbation.

  15. Extending cosmological tests of General Relativity with the Square Kilometre Array

    E-Print Network [OSTI]

    Philip Bull

    2015-09-24

    Tests of general relativity (GR) are still in their infancy on cosmological scales, but forthcoming experiments promise to greatly improve their precision over a wide range of distance scales and redshifts. One such experiment, the Square Kilometre Array (SKA), will carry out several wide and deep surveys of resolved and unresolved neutral hydrogen (HI) 21cm line-emitting galaxies, mapping a significant fraction of the sky from $0 \\le z \\lesssim 6$. I present forecasts for the ability of a suite of possible SKA HI surveys to detect deviations from GR by reconstructing the cosmic expansion and growth history. SKA Phase 1 intensity mapping surveys can achieve sub-1% measurements of $f\\sigma_8$ out to $z\\approx 1$, with an SKA1-MID Band 2 survey out to $z \\lesssim 0.6$ able to surpass contemporary spectroscopic galaxy surveys such as DESI and Euclid in terms of constraints on modified gravity parameters if challenges such as foreground contamination can be tackled effectively. A more futuristic Phase 2 HI survey of $\\sim 10^9$ spectroscopic galaxy redshifts would be capable of detecting a $\\sim 2\\%$ modification of the Poisson equation out to $z\\approx 2$.

  16. Simulated Stochastic Approximation Annealing for Global Optimization with a Square-Root Cooling Schedule

    SciTech Connect (OSTI)

    Liang, Faming; Cheng, Yichen; Lin, Guang

    2014-06-13

    Simulated annealing has been widely used in the solution of optimization problems. As known by many researchers, the global optima cannot be guaranteed to be located by simulated annealing unless a logarithmic cooling schedule is used. However, the logarithmic cooling schedule is so slow that no one can afford to have such a long CPU time. This paper proposes a new stochastic optimization algorithm, the so-called simulated stochastic approximation annealing algorithm, which is a combination of simulated annealing and the stochastic approximation Monte Carlo algorithm. Under the framework of stochastic approximation Markov chain Monte Carlo, it is shown that the new algorithm can work with a cooling schedule in which the temperature can decrease much faster than in the logarithmic cooling schedule, e.g., a square-root cooling schedule, while guaranteeing the global optima to be reached when the temperature tends to zero. The new algorithm has been tested on a few benchmark optimization problems, including feed-forward neural network training and protein-folding. The numerical results indicate that the new algorithm can significantly outperform simulated annealing and other competitors.

  17. Odd-even effect of melting finite polymer film on square lattice

    E-Print Network [OSTI]

    Tieyan Si

    2015-03-24

    Two dimensional film system bears many exotic thermodynamics behaviors. We proposed a mathematical physics model to explore how the melting temperature of a two dimensional mathematical dimer film depends on the odd-eveness of the finite width of dimer film. A weak external bond between dimers is introduced into the classical dimer model in this dimer film. We derived a general equation of melting temperature and applied it for computing the melting temperature of a dimer film covering a finite square lattice. The melting temperature is proportional to the external bonding energy that we assume it binds neighboring dimers together and proportional to the inverse of entropy per site. Further more, it shows fusing two small rectangular dimer film with odd number of length into one big rectangular film gains more entropy than fusing two small rectangles with even number of length into the same big rectangle. Fusing two small toruses with even number of length into one big torus reduces entropy. Fusing two small toruses with odd number of length increases the entropy. Thus two dimer films with even number of length repel each other, two dimer films with odd length attract each other. The odd-even effect is also reflected on the correlation function of two topologically distinguishable loops in a torus surface. The entropy of finite system dominates odd-even effect. This model has straightforward extension to longer polymers and three dimensional systems.

  18. High order Fuchsian equations for the square lattice Ising model: $?^{(6)}$

    E-Print Network [OSTI]

    S. Boukraa; S. Hassani; I. Jensen; J. -M. Maillard; N. Zenine

    2009-12-25

    This paper deals with $\\tilde{\\chi}^{(6)}$, the six-particle contribution to the magnetic susceptibility of the square lattice Ising model. We have generated, modulo a prime, series coefficients for $\\tilde{\\chi}^{(6)}$. The length of the series is sufficient to produce the corresponding Fuchsian linear differential equation (modulo a prime). We obtain the Fuchsian linear differential equation that annihilates the "depleted" series $\\Phi^{(6)}=\\tilde{\\chi}^{(6)} - {2 \\over 3} \\tilde{\\chi}^{(4)} + {2 \\over 45} \\tilde{\\chi}^{(2)}$. The factorization of the corresponding differential operator is performed using a method of factorization modulo a prime introduced in a previous paper. The "depleted" differential operator is shown to have a structure similar to the corresponding operator for $\\tilde{\\chi}^{(5)}$. It splits into factors of smaller orders, with the left-most factor of order six being equivalent to the symmetric fifth power of the linear differential operator corresponding to the elliptic integral $E$. The right-most factor has a direct sum structure, and using series calculated modulo several primes, all the factors in the direct sum have been reconstructed in exact arithmetics.

  19. High order Fuchsian equations for the square lattice Ising model: $\\tilde?^{(5)}$

    E-Print Network [OSTI]

    A. Bostan; S. Boukraa; A. J. Guttmann; S. Hassani; I. Jensen; J. -M. Maillard; N. Zenine

    2009-04-09

    We consider the Fuchsian linear differential equation obtained (modulo a prime) for $\\tilde{\\chi}^{(5)}$, the five-particle contribution to the susceptibility of the square lattice Ising model. We show that one can understand the factorization of the corresponding linear differential operator from calculations using just a single prime. A particular linear combination of $\\tilde{\\chi}^{(1)}$ and $\\tilde{\\chi}^{(3)}$ can be removed from $\\tilde{\\chi}^{(5)}$ and the resulting series is annihilated by a high order globally nilpotent linear ODE. The corresponding (minimal order) linear differential operator, of order 29, splits into factors of small orders. A fifth order linear differential operator occurs as the left-most factor of the "depleted" differential operator and it is shown to be equivalent to the symmetric fourth power of $L_E$, the linear differential operator corresponding to the elliptic integral $E$. This result generalizes what we have found for the lower order terms $\\tilde{\\chi}^{(3)}$ and $\\tilde{\\chi}^{(4)}$. We conjecture that a linear differential operator equivalent to a symmetric $(n-1)$-th power of $L_E$ occurs as a left-most factor in the minimal order linear differential operators for all $\\tilde{\\chi}^{(n)}$'s.

  20. Extending cosmological tests of General Relativity with the Square Kilometre Array

    E-Print Network [OSTI]

    Bull, Philip

    2015-01-01

    Tests of general relativity (GR) are still in their infancy on cosmological scales, but forthcoming experiments promise to greatly improve their precision over a wide range of distance scales and redshifts. One such experiment, the Square Kilometre Array (SKA), will carry out several wide and deep surveys of resolved and unresolved neutral hydrogen (HI) 21cm line-emitting galaxies, mapping a significant fraction of the sky from $0 \\le z \\lesssim 6$. I present forecasts for the ability of a suite of possible SKA HI surveys to detect deviations from GR by reconstructing the cosmic expansion and growth history. SKA Phase 1 intensity mapping surveys can achieve sub-1% measurements of $f\\sigma_8$ out to $z\\approx 1$, with an SKA1-MID Band 2 survey out to $z \\lesssim 0.6$ able to surpass contemporary spectroscopic galaxy surveys such as DESI and Euclid in terms of constraints on modified gravity parameters if challenges such as foreground contamination can be tackled effectively. A more futuristic Phase 2 HI survey...

  1. Evaluation of Role of Oxidative Stress and Aging in Caenorhabditis elegans: Relevance to Human Aging

    E-Print Network [OSTI]

    Bondy, Stephen Bondy C

    2013-01-01

    vivo but do not retard aging in the nematode Caenorhabditiscyclooxygenase-2 activity. Aging Cell 2011; 10(3): 506-19.in wild-type and premature aging C. elegans mutant (mev-1) [

  2. Oxidative Stress and Aging in Caenorhabditis elegans: Relevance to Human Aging

    E-Print Network [OSTI]

    Bondy, Stephen Bondy C

    2013-01-01

    vivo but do not retard aging in the nematode Caenorhabditiscyclooxygenase-2 activity. Aging Cell 2011; 10(3): 506-19.in wild-type and premature aging C. elegans mutant (mev-1) [

  3. Role of Oxidative Stress and Aging in Caenorhabditis elegans: Relevance to Human Aging

    E-Print Network [OSTI]

    Bondy, Stephen Bondy C

    2013-01-01

    vivo but do not retard aging in the nematode Caenorhabditiscyclooxygenase-2 activity. Aging Cell 2011; 10(3): 506-19.in wild-type and premature aging C. elegans mutant (mev-1) [

  4. Countering Aging Effects through Field Gate Sizing 

    E-Print Network [OSTI]

    Henrichson, Trenton D.

    2010-01-14

    Transistor aging through negative bias temperature instability (NBTI) has become a major lifetime constraint in VLSI circuits. We propose a technique that uses antifuses to widen PMOS transistors later in a circuit?s life cycle to combat aging...

  5. Utah Commission on Aging June 6, 2007

    E-Print Network [OSTI]

    Tipple, Brett

    Institutions Norma Matheson Chair Anne Peterson University of Utah Mayor JoAnn Seghini Midvale City Sara to the Commission for consideration. · Aging SMART: Denise Brooks distributed Aging SMART Sourcebook. Website is up

  6. The San FranciscoVolcanic Field,which covers about 1,800 square miles, is part of northern

    E-Print Network [OSTI]

    The San FranciscoVolcanic Field,which covers about 1,800 square miles, is part of northern Arizona at the high- est elevations.The varied forests and geologic features of the San FranciscoVolcanic Field offer young but extinct volcanoes of the San Francisco Volcanic Field.Without the volcanoes, this region would

  7. 898 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 36, NO. 3, MAY 1998 Least Squares Subspace Projection Approach to

    E-Print Network [OSTI]

    Chang, Chein-I

    be thought of as a priori OSP. In order to evaluate these three approaches, their associated least squares) analysis. All results are demonstrated by computer simulations and Airborne Visible/Infrared Imaging classifier (TSC). I. INTRODUCTION THE ADVENT of high spatial resolution airborne and satellite sensors

  8. Bound state solutions of square root power law potential--Wavefunction ansatz method on $D$-dimensional Schrödinger equation

    E-Print Network [OSTI]

    Tapas Das

    2015-03-25

    $D$-dimensional Schr\\"{o}dinger equation is addressed for square root power law potential. Bound state unnormalized eigenfunctions and the energy eigenvalues are obtained using wave function ansatz method. Some special cases are studied at the end to ensure the correctness of present work.

  9. Running head: PLSCA FOR BEHAVIORALAND GENETIC DATA 1 Partial Least Squares-Correspondence Analysis: A framework to simultaneously analyze

    E-Print Network [OSTI]

    Abdi, Hervé

    : A framework to simultaneously analyze behavioral and genetic data Derek Beaton* School of Behavioral and BrainRunning head: PLSCA FOR BEHAVIORALAND GENETIC DATA 1 Partial Least Squares-Correspondence Analysis Sciences The University of Texas at Dallas MS: GR4.1 800 West Campbell Rd. Richardson, TX 75080 USA Joseph

  10. Storage and discharge estimation of Danube basin by least-squares prediction J. Zhang, M. J. Tourian, N. Sneeuw

    E-Print Network [OSTI]

    Stuttgart, Universität

    Storage and discharge estimation of Danube basin by least-squares prediction J. Zhang, M. J The total storage changes can be observed by GRACE. However, GRACE has already outlived its predicted water storage changes until GRACE Follow-On becomes operational in 2017. The variation in water storage

  11. A Fourth Order Hermitian Box-Scheme with Fast Solver for the Poisson Problem in a Square

    E-Print Network [OSTI]

    Croisille, Jean-Pierre

    A Fourth Order Hermitian Box-Scheme with Fast Solver for the Poisson Problem in a Square Ali Abbas Metz, France email: croisil@poncelet.univ-metz.fr December 12, 2010 1 #12;Abstract A new fourth order the approximation of the gradient by the fourth order hermitian derivative, with a conservative discrete formulation

  12. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 58, NO. 5, MAY 2012 2541 Least Squares Superposition Codes of Moderate

    E-Print Network [OSTI]

    Robertson, Edward L.

    IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 58, NO. 5, MAY 2012 2541 Least Squares Superposition, IEEE, and Andrew R Barron, Senior Member, IEEE Abstract--For the additive white Gaussian noise channel April 17, 2012. The material in this paper was presented in part at the 2010 IEEE International

  13. IEEE SIGNAL PROCESSING LETTERS, VOL. 13, NO. 5, MAY 2006 265 A Square-Root Adaptive V-BLAST Algorithm

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    IEEE SIGNAL PROCESSING LETTERS, VOL. 13, NO. 5, MAY 2006 265 A Square-Root Adaptive V-BLAST Algorithm for Fast Time-Varying MIMO Channels Athanasios A. Rontogiannis, Member, IEEE, Vassilis Kekatos, Student Member, IEEE, and Kostas Berberidis, Member, IEEE Abstract--Among the methods that have been

  14. Calculation of the Electric and Magnetic Root Mean Squared Radiuses of Proton Based on MIT Bag Model

    E-Print Network [OSTI]

    Maryam Momeni Feili; Mahvash Zandi

    2015-01-12

    The electric and magnetic bag radiuses of the proton can be determined by MIT bag model based on electric and magnetic form factors of the proton. Also we determined electric and magnetic root mean squared radiuses of the proton, using of bag radius and compared with other results suggests a suitable compatibility.

  15. Widespread occurrence of the inverse square distribution in social sciences and taxonomy Guido Caldarelli,1,2

    E-Print Network [OSTI]

    Caldarelli, Guido

    Widespread occurrence of the inverse square distribution in social sciences and taxonomy GuidoRevE.69.035101 PACS number s : 89.75.Fb, 89.75.Hc, 05.40. a, 05.65. b Taxonomy is one of the major

  16. General series solution for finite square-well energy levels for use in wave-packet studies

    E-Print Network [OSTI]

    Stroud, Carlos R.

    General series solution for finite square-well energy levels for use in wave-packet studies David L solution is useful for local approximations of the energy spectrum which target a particular energy range. In Sec. III, we develop a general series solution for the energy spectrum that makes use of a ``height

  17. PIV flow measurements for heat transfer characterization in two-pass square channels with smooth and 90 ribbed walls

    E-Print Network [OSTI]

    Kihm, IconKenneth David

    passages inside a turbine blade to convectively extract heat from the blade body. The coolant air Elsevier Science Ltd. All rights reserved. 1. Introduction Advanced gas turbine airfoils are subjected-pass square channel was reported using liquid crystal technique by Ekkad and Han [4]. Park and Lau [5] also

  18. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 54, NO. 6, JUNE 2006 2155 A Minimum Squared-Error Framework

    E-Print Network [OSTI]

    Eldar, Yonina

    IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 54, NO. 6, JUNE 2006 2155 A Minimum Squared processing entails representing a signal by a set of coefficients and relies on the existence of methods kernel. In practice, however, the input signal is never perfectly bandlimited, and the sampling process

  19. 80 IEEE SIGNAL PROCESSING LE'ITERS, VOL. 1, NO. 5, MAY 1994 Using Least Squares to Improve

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    80 IEEE SIGNAL PROCESSING LE'ITERS, VOL. 1, NO. 5, MAY 1994 Using Least Squares to Improve Blind Signal Copy Performance A. Swindlehurst, Member, IEEE, and J. Yang Abstract-Conventional methods for signal copy require one to estimate the directions of arrival (DOA's) of the signals prior to computing

  20. Inclusive Electroweak measurements in the muon channel with pp collisions at [the square root of] s=7 TeV

    E-Print Network [OSTI]

    Harris, Philip Coleman

    2011-01-01

    In this thesis, we perform the measurement of the production of W and Z bosons in proton-proton collisions at [the square root of]s = 7 TeV with the Large Hadron Collider (LHC). In the LHC, W and Z bosons are produced at ...

  1. 6, 39453963, 2006 Methanol inside aged

    E-Print Network [OSTI]

    ACPD 6, 3945­3963, 2006 Methanol inside aged tropical biomass burning plumes G. Dufour et al. Title Chemistry and Physics Discussions First space-borne measurements of methanol inside aged tropical biomass. Dufour (gaelle.dufour@lmd.polytechnique.fr) 3945 #12;ACPD 6, 3945­3963, 2006 Methanol inside aged

  2. HYGROTHERMAL AGING OF POLYIMIDE MATRIX COMPOSITE LAMINATES

    E-Print Network [OSTI]

    Nairn, John A.

    HYGROTHERMAL AGING OF POLYIMIDE MATRIX COMPOSITE LAMINATES John A. Nairn and Man-Hee Han Materials-0560, USA SUMMARY: Two polyimide-matrix systems were subjected to a series of hygrothermal aging experiments at various temperatures and relative humidities. For each aging condition, we measured the microcracking

  3. Dry aging beef for the retail channel 

    E-Print Network [OSTI]

    Smith, Robert David

    2007-09-17

    USDA Choice (n=48) and Select (n=48) paired Beef Loin, Short Loins, Short Cut (IMPS #174) were separated randomly into one of two treatments, dry or wet aging, and were aged for 14, 21, 28, or 35 d. At the end of each aging period, short loins were...

  4. FORUM REVIEW ARTICLE Alternative Perspectives on Aging

    E-Print Network [OSTI]

    Gems, David

    FORUM REVIEW ARTICLE Alternative Perspectives on Aging in Caenorhabditis elegans: Reactive Oxygen mechanisms at the heart of the aging process are a long-standing mystery. An influential theory has it that aging is the result of an accumulation of molecular damage, caused in particular by reactive oxygen

  5. aging,Bioengineering, AcousticsCircuitsand

    E-Print Network [OSTI]

    Lee, Tonghun

    Biom edicalIm aging,Bioengineering, AcousticsCircuitsand SignalProcessing Com m unicationsand) #12;Biom edicalIm aging,Bioengineering, Acoustics Circuitsand SignalProcessing Com m unicationsand. M. L. Oelze T. J. Overbye ELECTRICAL AND COMPUTER ENGINEERING (2 OF 3) #12;Biom edicalIm aging,Bioengineering

  6. The natural history of telomeres: tools for aging animals and exploring the aging process

    E-Print Network [OSTI]

    Vleck, Carol

    The natural history of telomeres: tools for aging animals and exploring the aging process Carol M, IA 50014, USA Abstract We have been exploring the use of telomere length as a technique to age animals. If telomere restriction fragments (TRFs) shorten predictably with age in a particular tissue

  7. Robust parallel iterative solvers for linear and least-squares problems, Final Technical Report

    SciTech Connect (OSTI)

    Saad, Yousef

    2014-01-16

    The primary goal of this project is to study and develop robust iterative methods for solving linear systems of equations and least squares systems. The focus of the Minnesota team is on algorithms development, robustness issues, and on tests and validation of the methods on realistic problems. 1. The project begun with an investigation on how to practically update a preconditioner obtained from an ILU-type factorization, when the coefficient matrix changes. 2. We investigated strategies to improve robustness in parallel preconditioners in a specific case of a PDE with discontinuous coefficients. 3. We explored ways to adapt standard preconditioners for solving linear systems arising from the Helmholtz equation. These are often difficult linear systems to solve by iterative methods. 4. We have also worked on purely theoretical issues related to the analysis of Krylov subspace methods for linear systems. 5. We developed an effective strategy for performing ILU factorizations for the case when the matrix is highly indefinite. The strategy uses shifting in some optimal way. The method was extended to the solution of Helmholtz equations by using complex shifts, yielding very good results in many cases. 6. We addressed the difficult problem of preconditioning sparse systems of equations on GPUs. 7. A by-product of the above work is a software package consisting of an iterative solver library for GPUs based on CUDA. This was made publicly available. It was the first such library that offers complete iterative solvers for GPUs. 8. We considered another form of ILU which blends coarsening techniques from Multigrid with algebraic multilevel methods. 9. We have released a new version on our parallel solver - called pARMS [new version is version 3]. As part of this we have tested the code in complex settings - including the solution of Maxwell and Helmholtz equations and for a problem of crystal growth.10. As an application of polynomial preconditioning we considered the problem of evaluating f(A)v which arises in statistical sampling. 11. As an application to the methods we developed, we tackled the problem of computing the diagonal of the inverse of a matrix. This arises in statistical applications as well as in many applications in physics. We explored probing methods as well as domain-decomposition type methods. 12. A collaboration with researchers from Toulouse, France, considered the important problem of computing the Schur complement in a domain-decomposition approach. 13. We explored new ways of preconditioning linear systems, based on low-rank approximations.

  8. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 56, NO. 10, OCTOBER 2008 5273 Improved Mean-Square Error Estimate for the LMS

    E-Print Network [OSTI]

    Beex, A. A. "Louis"

    -Square Error Estimate for the LMS Transversal Equalizer With Narrowband Interference Takeshi Ikuma and A. A. (Louis) Beex Abstract--When the least-mean-square (LMS) algorithm is used to adapt an adaptive in such an environment. We have recently shown that the mean of the LMS weights in this adaptive equalizer problem shifts

  9. Inverse Square Law of Gravitation in (2+1)-Dimensional Space-Time as a Consequence of Casimir Energy

    E-Print Network [OSTI]

    H. H. Soleng

    1993-10-04

    The gravitational effect of vacuum polarization in space exterior to a particle in (2+1)-dimensional Einstein theory is investigated. In the weak field limit this gravitational field corresponds to an inverse square law of gravitational attraction, even though the gravitational mass of the quantum vacuum is negative. The paradox is resolved by considering a particle of finite extension and taking into account the vacuum polarization in its interior.

  10. Effects of the Inverse Square Potential on Nucleon-Nucleon Elastic Scattering in the Bethe-Salpeter Equation

    E-Print Network [OSTI]

    Susumu Kinpara

    2015-03-25

    Bethe-Salpeter equation is applied to nucleon-nucleon elastic scattering at the intermediate energy. The differential cross section and the polarization are calculated in terms of the phase shift analysis method using the two-body potential derived from the Bethe-Salpeter equation. The lowest-order Born approximation for the K-matrix is corrected by including the inverse square part of the potential.

  11. Characterization of Field-Aged Exhaust Gas Recirculation Cooler...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterization of Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterized field-aged exhaust gas recirculation...

  12. Local Land-Use Controls and Aging-Friendliness

    E-Print Network [OSTI]

    Rosenthal, Larry A.

    2009-01-01

    A. 2001. “Aging and Smart Growth: Building Aging-Sensitivebuilding such product exclusively, or predominantly, because it creates homogenous-age zones, defeats smart-

  13. Aging and Longevity after Photoperiod Induced Variations in Life History /

    E-Print Network [OSTI]

    Raiewski, Evan Eric

    2013-01-01

    predicts future outcomes in aging adults. J Geriatr Physprogramming of body size. Aging Cell, 9(4), Conti, B. ,thermoregulation and biological aging. Physiol Rev, 78(2),

  14. Understanding Aging: A Medical Humanities Approach to “Death in Venice“

    E-Print Network [OSTI]

    English, David

    2008-01-01

    issues, understanding aging from a humanistic perspective isattempting to understand aging, I have divided the text intoAschenbach's experience with aging while in Germany. This

  15. The Next ICE Age | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications The Next ICE Age Fuel Modification t Facilitate Future Combustion Regimes? Optimization of Advanced Diesel Engine Combustion Strategies...

  16. Immigration Control in the Age of Migration

    E-Print Network [OSTI]

    Wong, Tak Kei

    2011-01-01

    Policies for an Age of Migration. Washington D.C. : Carnegieed. ). 2011. Global Migration Governance. New York: OxfordCitizenship. ” International Migration Review 38 (2): 389-

  17. Aging and Radiation Effects in Stockpile Electronics

    SciTech Connect (OSTI)

    Hartman, E.F.

    1999-03-25

    It is likely that aging is affecting the radiation hardness of stockpile electronics, and we have seen apparent examples of aging that affects the electronic radiation hardness. It is also possible that low-level intrinsic radiation that is inherent during stockpile life will damage or in a sense age electronic components. Both aging and low level radiation effects on radiation hardness and stockpile reliability need to be further investigated by using both test and modeling strategies that include appropriate testing of electronic components withdrawn from the stockpile.

  18. For whom is "Successful Aging" Relevant?:(Re)defining the Aging Experience through the Voices of Hmong Elders

    E-Print Network [OSTI]

    Vang, Mai Yang

    2013-01-01

    GE and Mukamal K. “Successful aging. ” American Journal ofand cultural context of adaptive aging among Southeast AsianThe Cultural Context of Aging. New York: Greenwood,

  19. Falls, Disability and Food Insecurity Present Challenges to Healthy Aging

    E-Print Network [OSTI]

    Wallace, Steven P.; Molina, L. Cricel; Jhawar, Mona

    2007-01-01

    characteristics. Journal of Aging Health. 2001. 13:329-54.for prevention. Age and Aging. 2006:35 Supplement 2:ii37-Present Challenges to Healthy Aging Steven P. Wallace, L.

  20. Deactivation of Accelerated Engine-Aged and Field-Aged SCR Catalysts...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Field-Aged SCR Catalysts and the Role of the DOC A technique for accelerated aging of SCR system (DOC -> SCR-> DPF) reveals two deactivation mechanisms and replicates...

  1. TGF- Sma/Mab Signaling Mutations Uncouple Reproductive Aging from Somatic Aging

    E-Print Network [OSTI]

    Murphy, Coleen

    mutations and treatments that extend C. elegans' reproductive period also regulate longevity, suggesting, with infertility and maternal age-related birth defects arising during the fourth decade of life [1]. While reproductive aging may allow us to address the problems of maternal age-related infertility and birth defects

  2. Evolution of magnetic fields in galaxies and future observational tests with the Square Kilometre Array

    E-Print Network [OSTI]

    Tigran G. Arshakian; Rainer Beck; Marita Krause; Dmitry Sokoloff

    2008-11-18

    Aims. We investigate the cosmological evolution of large- and small-scale magnetic fields in galaxies in the light of present models of formation and evolution of galaxies. Methods. We use the dynamo theory to derive the timescales of amplification and ordering of magnetic fields in disk and puffy galaxies. Turbulence in protogalactic halos generated by thermal virialization can drive an efficient turbulent dynamo. Results from simulations of hierarchical structure formation cosmology provide a tool to develop an evolutionary model of regular magnetic fields coupled with galaxy formation and evolution. Results. The turbulent (small-scale) dynamo was able to amplify a weak seed magnetic field in halos of protogalaxies to a few muG strength within a few 10^8 yr. This turbulent field served as a seed to the mean-field (large-scale) dynamo. Galaxies similar to the Milky Way formed their disks at z~10 and regular fields of muG strength and a few kpc coherence length were generated within 2 Gyr (at z~3), but field-ordering on the coherence scale of the galaxy size required an additional 6 Gyr (at z~0.5). Giant galaxies formed their disks at z~10, allowing more efficient dynamo generation of strong regular fields (with kpc coherence length) already at z~4. However, the age of the Universe is short for fully coherent fields in giant galaxies larger than 15 kpc to have been achieved. Dwarf galaxies should have hosted fully coherent fields at z~1. After a major merger, the strength of the turbulent field is enhanced by a factor of a few. Conclusions. This evolutionary scenario can be tested by measurements of polarized synchrotron emission and Faraday rotation with the planned SKA. We predict an anticorrelation between galaxy size and ratio between ordering scale and galaxy size (abridged).

  3. Inclusive jet and dijet production in polarized proton-proton collisions at [the square root of sigma] =200 GeV at RHIC

    E-Print Network [OSTI]

    Sakuma, Tai

    2010-01-01

    The inclusive jet cross section, the dijet cross section, and the dijet longitudinal double spin asymmetry ALL in polarized proton-proton collisions at [square root of sigma] = 200 GeV are measured with a data sample of ...

  4. Lawn chairs in Times Square : an analysis of the Pilot Streets Program and the provisional project approach for New York City's Green Light in Midtown project

    E-Print Network [OSTI]

    Taylor, Alexis (Alexis Abreu)

    2011-01-01

    In 2009 the New York City Department of Transportation (NYC DOT) initiated a Pilot Streets Program that called for the temporary closure of Broadway between 47th and 42nd Streets to all vehicular traffic. With Times Square ...

  5. Utah Commission on Aging December Meeting Minutes

    E-Print Network [OSTI]

    Tipple, Brett

    ­ Chair UT Area Agencies on Aging Excused Gary Kelso Long-Term Care William (Bill) Knowles UT Guests X Marion Davis (on behalf of Karla Aguirre) Dept. of Workforce Services X Cole Hansen Gov

  6. Aging of polymeric composites : a literature review

    E-Print Network [OSTI]

    Treviño-Garrido, Margie N

    2013-01-01

    Due to their increased use in today's society, an extensive survey was undertaken in this report to condense what's been, thus far, discovered as to the effects of aging on polymeric composites. Special emphasis was placed ...

  7. Utah Commission on Aging June 3, 2008

    E-Print Network [OSTI]

    Tipple, Brett

    Thatcher for Kristin Cox Workforce Services Shauna O'Neil Salt Lake County Aging Services Lynne Shaffer for Deborah Bayle United Way Archie Archuleta Ethnic Minorities Alan Ormsby for LM Church Utah Department

  8. Automatic Speech Recognition for ageing voices 

    E-Print Network [OSTI]

    Vipperla, Ravichander

    2011-11-24

    With ageing, human voices undergo several changes which are typically characterised by increased hoarseness, breathiness, changes in articulatory patterns and slower speaking rate. The focus of this thesis is to understand ...

  9. Edublogging : instruction for the digital age learner

    E-Print Network [OSTI]

    Felix, Jeffrey P.

    2007-01-01

    P. (2002). Blogs: A disruptive technology coming of age?I'm using the web, blogs, and other technology to supplementTechnology Access 249 xiii The Differences between Forums and Blogs.

  10. Dark matter vs. modifications of the gravitational inverse-square law. Results from planetary motion in the solar system

    E-Print Network [OSTI]

    M. Sereno; Ph. Jetzer

    2006-06-08

    Dark matter or modifications of the Newtonian inverse-square law in the solar-system are studied with accurate planetary astrometric data. From extra-perihelion precession and possible changes in the third Kepler's law, we get an upper limit on the local dark matter density, rho_{DM} gravitational acceleration are really small. We examined the MOND interpolating function mu in the regime of strong gravity. Gradually varying mu suggested by fits of rotation curves are excluded, whereas the standard form mu(x)= x/(1+x^2)^{1/2} is still compatible with data. In combination with constraints from galactic rotation curves and theoretical considerations on the external field effect, the absence of any significant deviation from inverse square attraction in the solar system makes the range of acceptable interpolating functions significantly narrow. Future radio ranging observations of outer planets with an accuracy of few tenths of a meter could either give positive evidence of dark matter or disprove modifications of gravity.

  11. Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale D. J. Kapner,* T. S. Cook, E. G. Adelberger, J. H. Gundlach, B. R. Heckel, C. D. Hoyle, and H. E. Swanson

    E-Print Network [OSTI]

    Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

    Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale D. J. Kapner,* T-balance experiments to test the gravitational inverse-square law at separations between 9.53 mm and 55 m, probing of the gravitational inverse-square law we report in this Letter. Our tests were made with a substantially upgraded ver

  12. Fatigue and Creep Crack Propagation behaviour of Alloy 617 in the Annealed and Aged Conditions

    SciTech Connect (OSTI)

    Julian K. Benz; Richard N. Wright

    2013-10-01

    The crack propagation behaviour of Alloy 617 was studied under various conditions. Elevated temperature fatigue and creep-fatigue crack growth experiments were conducted at 650 and 800 degrees C under constant stress intensity (triangle K) conditions and triangular or trapezoidal waveforms at various frequencies on as-received, aged, and carburized material. Environmental conditions included both laboratory air and characteristic VHTR impure helium. As-received Alloy 617 displayed an increase in the crack growth rate (da/dN) as the frequency was decreased in air which indicated a time-dependent contribution component in fatigue crack propagation. Material aged at 650°C did not display any influence on the fatigue crack growth rates nor the increasing trend of crack growth rate with decreasing frequency even though significant microstructural evolution, including y’ (Ni3Al) after short times, occurred during aging. In contrast, carburized Alloy 617 showed an increase in crack growth rates at all frequencies tested compared to the material in the standard annealed condition. Crack growth studies under quasi-constant K (i.e. creep) conditions were also completed at 650 degrees C and a stress intensity of K = 40 MPa9 (square root)m. The results indicate that crack growth is primarily intergranular and increased creep crack growth rates exist in the impure helium environment when compared to the results in laboratory air. Furthermore, the propagation rates (da/dt) continually increased for the duration of the creep crack growth either due to material aging or evolution of a crack tip creep zone. Finally, fatigue crack propagation tests at 800 degrees C on annealed Alloy 617 indicated that crack propagation rates were higher in air than impure helium at the largest frequencies and lowest stress intensities. The rates in helium, however, eventually surpass the rates in air as the frequency is reduced and the stress intensity is decreased which was not observed at 650 degrees C.

  13. Forever Young: Aging Control In DTNs

    E-Print Network [OSTI]

    Altman, Eitan; Menasche, Daniel Sadoc; Xu, Yuedong

    2010-01-01

    The demand for Internet services that require frequent updates through small messages, also known as microblogging, has tremendously grown in the past few years. Although the use of such applications by domestic users is usually free, their access from mobile devices is subject to fees and consumes energy from limited batteries. If a user activates his mobile device and is in range of a service provider, a content update is received at the expense of monetary and energy costs. Thus, users face a tradeoff between such costs and their messages aging. The goal of this paper is to show how to cope with such a tradeoff, by devising \\emph{aging control policies}. An aging control policy consists of deciding, based on the current utility of the last message received, whether to activate the mobile device, and if so, which technology to use (WiFi or 3G). We present a model that yields the optimal aging control policy. Our model is based on a Markov Decision Process in which states correspond to message ages. Using ou...

  14. Restructuring and aging in a capillary suspension

    E-Print Network [OSTI]

    Erin Koos; Wolfgang Kannowade; Norbert Willenbacher

    2014-10-16

    The rheological properties of capillary suspensions, suspensions with small amounts of an added immiscible fluid, are dramatically altered with the addition of the secondary fluid. We investigate a capillary suspension to determine how the network ages and restructures at rest and under applied external shear deformation. The present work uses calcium carbonate suspended in silicone oil (11 % solids) with added water as a model system. Aging of capillary suspensions and their response to applied oscillatory shear is distinctly different from particulate gels dominated by the van der Waals forces. The suspensions dominated by the capillary force are very sensitive to oscillatory flow, with the linear viscoelastic regime ending at a deformation of only 0.1 % and demonstrating power-law aging behavior. This aging persists for long times at low deformations or for shorter times with a sudden decrease in the strength at higher deformations. This aging behavior suggests that the network is able to rearrange and even rupture. This same sensitivity is not demonstrated in shear flow where very high shear rates are required to rupture the agglomerates returning the apparent viscosity of capillary suspensions to the same viscosity as for the pure vdW suspension. A transitional region is also present at intermediate water contents wherein the material response depends very strongly on the type, strength, and duration of the external forcing.

  15. Width dependent transition of quantized spin-wave modes in Ni{sub 80}Fe{sub 20} square nanorings

    SciTech Connect (OSTI)

    Banerjee, Chandrima; Saha, Susmita; Barman, Saswati; Barman, Anjan, E-mail: abarman@bose.res.in [Thematic Unit of Excellence on Nanodevice Technology, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098 (India); Rousseau, Olivier [CEMS-RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Otani, YoshiChika [CEMS-RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)

    2014-10-28

    We investigated optically induced ultrafast magnetization dynamics in square shaped Ni{sub 80}Fe{sub 20} nanorings with varying ring width. Rich spin-wave spectra are observed whose frequencies showed a strong dependence on the ring width. Micromagnetic simulations showed different types of spin-wave modes, which are quantized upto very high quantization number. In the case of widest ring, the spin-wave mode spectrum shows quantized modes along the applied field direction, which is similar to the mode spectrum of an antidot array. As the ring width decreases, additional quantization in the azimuthal direction appears causing mixed modes. In the narrowest ring, the spin-waves exhibit quantization solely in azimuthal direction. The different quantization is attributed to the variation in the internal field distribution for different ring width as obtained from micromagnetic analysis and supported by magnetic force microscopy.

  16. Bulk, surface and corner free energy series for the chromatic polynomial on the square and triangular lattices

    E-Print Network [OSTI]

    Jesper Lykke Jacobsen

    2010-06-11

    We present an efficient algorithm for computing the partition function of the q-colouring problem (chromatic polynomial) on regular two-dimensional lattice strips. Our construction involves writing the transfer matrix as a product of sparse matrices, each of dimension ~ 3^m, where m is the number of lattice spacings across the strip. As a specific application, we obtain the large-q series of the bulk, surface and corner free energies of the chromatic polynomial. This extends the existing series for the square lattice by 32 terms, to order q^{-79}. On the triangular lattice, we verify Baxter's analytical expression for the bulk free energy (to order q^{-40}), and we are able to conjecture exact product formulae for the surface and corner free energies.

  17. Inflection points of microcanonical entropy: Monte Carlo simulation of q state Potts model on a finite square lattice

    SciTech Connect (OSTI)

    Praveen, E. Satyanarayana, S. V. M.

    2014-04-24

    Traditional definition of phase transition involves an infinitely large system in thermodynamic limit. Finite systems such as biological proteins exhibit cooperative behavior similar to phase transitions. We employ recently discovered analysis of inflection points of microcanonical entropy to estimate the transition temperature of the phase transition in q state Potts model on a finite two dimensional square lattice for q=3 (second order) and q=8 (first order). The difference of energy density of states (DOS) ? ln g(E) = ln g(E+ ?E) ?ln g(E) exhibits a point of inflexion at a value corresponding to inverse transition temperature. This feature is common to systems exhibiting both first as well as second order transitions. While the difference of DOS registers a monotonic variation around the point of inflexion for systems exhibiting second order transition, it has an S-shape with a minimum and maximum around the point of inflexion for the case of first order transition.

  18. Superconducting epitaxial thin films of CeNi{sub x}Bi{sub 2} with a bismuth square net structure

    SciTech Connect (OSTI)

    Buckow, Alexander; Kupka, Katharina; Retzlaff, Reiner; Kurian, Jose; Alff, Lambert [Institute of Materials Science, Technische Universitaet Darmstadt, 64287 Darmstadt (Germany)

    2012-10-15

    We have grown highly epitaxial and phase pure thin films of the arsenic-free pnictide compound CeNi{sub x}Bi{sub 2} on (100) MgO substrates by reactive molecular beam epitaxy (RMBE). X-ray diffraction and reflection high-energy electron diffraction of the films confirm the ZrCuSiAs structure with a Bi square net layer. Superconductivity was observed in magnetization and resistivity measurements for x= 0.75 to 0.93 in these CeNi{sub x}Bi{sub 2} thin films with the highest critical temperature of 4.05 K and a resistive transition width of 0.1 K for x= 0.86. Our results indicate that thin film deposition by RMBE provides a tool to synthesize high-quality pnictide superconductors of the novel 112 type.

  19. Health, Medicine and Aging Concentration Concentrations in Sociology

    E-Print Network [OSTI]

    Turc, Catalin

    Sociology Health, Medicine and Aging Concentration Concentrations in Sociology Students majoring. The 4 concentrations are: · Crime, Law and Justice · Health, Medicine and Aging · Gender, Work and Family · Social Inequality Health, Medicine and Aging Concentration Undergraduate students majoring

  20. INCREASED STRENGTHENING OF AUSTENITIC ALLOYS THROUGH DUAL AGING

    E-Print Network [OSTI]

    Ma, Annie

    2011-01-01

    d o - - -700°C after first aging at 745°C /2 hr tween) (nobJ,J". _.J__ __JI (TOTAL) AGING TIME (hr) XBL Figure 22 aALLOYS THROUGH DUAL AGING Annie Ma Inorganic Materials

  1. Memory for sequences of events impaired in typical aging.

    E-Print Network [OSTI]

    Allen, TA; Morris, AM; Stark, SM; Fortin, NJ; Stark, CE

    2015-01-01

    340. Salthouse TA. 2000. Aging and measures of processingSpecific- and partial- source memory: effects of aging.Psychol Aging 19: 689 –694. Small SA, Tsai WY, DeLaPaz R,

  2. Understanding the Emotions of Others: Loss or Gain in Aging?

    E-Print Network [OSTI]

    Sze, Jocelyn Andrea

    2010-01-01

    theory. Psychology and Aging, 7(3), 331-8. Carstensen, L.2007). The Handbook of Aging and Cognition: Third Edition (The Posterior-Anterior Shift in Aging. Cereb. Cortex, 18(5),

  3. Stress Relaxation in Aging Soft Colloidal Glasses

    E-Print Network [OSTI]

    Ranjini Bandyopadhyay; P. Harsha Mohan; Yogesh M. Joshi

    2010-03-25

    We investigate the stress relaxation behavior on the application of step strains to aging aqueous suspensions of the synthetic clay Laponite. The stress exhibits a two-step decay, from which the slow relaxation modes are extracted as functions of the sample ages and applied step strain deformations. Interestingly, the slow time scales that we estimate show a dramatic enhancement with increasing strain amplitudes. We argue that the system ends up exploring the deeper sections of its energy landscape following the application of the step strain.

  4. Aging assessment for active fire protection systems

    SciTech Connect (OSTI)

    Ross, S.B. [Science and Engineering Associates, Inc. (United States); Nowlen, S.P.; Tanaka, T. [Sandia National Labs., Albuquerque, NM (United States)

    1995-06-01

    This study assessed the impact of aging on the performance and reliability of active fire protection systems including both fixed fire suppression and fixed fire detection systems. The experience base shows that most nuclear power plants have an aggressive maintenance and testing program and are finding degraded fire protection system components before a failure occurs. Also, from the data reviewed it is clear that the risk impact of fire protection system aging is low. However, it is assumed that a more aggressive maintenance and testing program involving preventive diagnostics may reduce the risk impact even further.

  5. Tritium Aging Effects in Palladium on Kieselguhr

    SciTech Connect (OSTI)

    Shanahan, K.L.; Holder, J.S.; Wermer, J.R.

    1998-10-01

    50 weight % Pd on kieselguhr (Pd/k) is used in hydrogen isotope separation processes at the Savannah River Site. Long term aging studies on this material were undertaken in June, 1992. P-c-T data showing the aging effect of tritium loading for long periods will be presented and discussed covering from June, 1992 to March, 1997. Lowering of plateau pressures and increasing indications of in homogeneities have been observed in both tritium and deuterium absorption isotherms at 0 C, and desorption isotherms at 80 and 120 C.

  6. Mechanical Testing of TR-55 Rubber Thermally Aged Under Tensile...

    Office of Scientific and Technical Information (OSTI)

    Mechanical Testing of TR-55 Rubber Thermally Aged Under Tensile Strain Citation Details In-Document Search Title: Mechanical Testing of TR-55 Rubber Thermally Aged Under Tensile...

  7. The Development of Rapid Aging and Poisoning Protocols for Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The Development of Rapid Aging and Poisoning Protocols for Diesel Aftertreatment Devices The Development of Rapid Aging and Poisoning Protocols for Diesel Aftertreatment Devices...

  8. Rapid Aging Protocols for Diesel Aftertreatment Devices: NOx...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Aging Protocols for Diesel Aftertreatment Devices: NOx Abatement Catalysts Rapid Aging Protocols for Diesel Aftertreatment Devices: NOx Abatement Catalysts Poster presentation at...

  9. Diagnostic and Prognostic Analysis of Battery Performance & Aging...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Prognostic Analysis of Battery Performance & Aging based on Kinetic and Thermodynamic Principles Diagnostic and Prognostic Analysis of Battery Performance & Aging based on...

  10. An Accelerated Aging Method for Diesel Exhaust Aftertreatment...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An Accelerated Aging Method for Diesel Exhaust Aftertreatment Systems An Accelerated Aging Method for Diesel Exhaust Aftertreatment Systems Poster presented at the 16th Directions...

  11. Effect of non-ageing and ageing ceria nanoparticles suspensions on fresh water micro-algae

    E-Print Network [OSTI]

    Boyer, Edmond

    Effect of non-ageing and ageing ceria nanoparticles suspensions on fresh water micro-algae Manier nanoparticle (nCeO2) suspensions, towards freshwater micro-algae assessing the effect nCeO2 suspensions microscopy (TEM). In addition, the interaction between NPs and algae were investigated using flow

  12. Evaluation of the effect of organic pro-degradant concentration in polypropylene exposed to the natural ageing

    SciTech Connect (OSTI)

    Montagna, L. S., E-mail: larissambiental@yahoo.com.br, E-mail: andrecatto@terra.com.br, E-mail: katiandry@hotmail.com, E-mail: mmcforte@hotmail.com, E-mail: ruth.santana@ufrgs.br; Catto, A. L., E-mail: larissambiental@yahoo.com.br, E-mail: andrecatto@terra.com.br, E-mail: katiandry@hotmail.com, E-mail: mmcforte@hotmail.com, E-mail: ruth.santana@ufrgs.br; Rossini, K., E-mail: larissambiental@yahoo.com.br, E-mail: andrecatto@terra.com.br, E-mail: katiandry@hotmail.com, E-mail: mmcforte@hotmail.com, E-mail: ruth.santana@ufrgs.br; Forte, M. M. C., E-mail: larissambiental@yahoo.com.br, E-mail: andrecatto@terra.com.br, E-mail: katiandry@hotmail.com, E-mail: mmcforte@hotmail.com, E-mail: ruth.santana@ufrgs.br; Santana, R. M. C., E-mail: larissambiental@yahoo.com.br, E-mail: andrecatto@terra.com.br, E-mail: katiandry@hotmail.com, E-mail: mmcforte@hotmail.com, E-mail: ruth.santana@ufrgs.br [Engineering School/Laboratory of Polymeric Materials, Federal University of Rio Grande do Sul, Porto Alegre (Brazil)

    2014-05-15

    The production and consumption of plastics in the last decade has recorded a remarkable increase in the scientific and industrial interest in environmentally degradable polymer (EDPs). Polymers wastes are deposited improperly, such as dumps, landfills, rivers and seas, causing a serious problem by the accumulation in the environment. The abiotic processes, like the photodegradation, are the most efficient occurring in the open environmental, where the polymers undergo degradation from the action of sunlight that result from direct exposure to solar radiation, however depend of the type of chemical ageing, which is the principal component of climatic ageing. The subject of this work is to study the influence of concentration of organic pro-degradant (1, 2 and 3 % w/w) in the polypropylene (PP) exposed in natural ageing. PP samples with and without the additive were processed in plates square form, obtained by thermal compression molding (TCM) using a press at 200°C under 2 tons for 5 min, and then were exposed at natural ageing during 120 days. The presence of organic additive influenced on PP degradability, this fact was assessed by changes in the thermal and morphology properties of the samples after 120 days of natural ageing. Scanning Electronic Microscopy (SEM) results of the morphological surface of the modified PP samples showed greater degradation photochemical oxidative when compared to neat PP, due to increase of rugosity and formation of microvoids. PP samples with different pro-degradant concentration under natural ageing presented a degree of crystallinity, obtained by Differential Scanning Calorimeter (DSC) increases in comparing the neat PP.

  13. Life history, longevity and aging Population ecology

    E-Print Network [OSTI]

    Wilkinson, Gerald S.

    = intrinsic rate of population growth dN/dt = (b-d)N = rN "r-selected" #12;Logistic population growth Addition of a density dependent term results in logistic growth K = carrying capacity dN/dt = rN (K-N)/K "K to allocation of resources between maintenance and reproduction #12;Reproductive value · Age

  14. The Mobile Web Comes of Age

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    The Mobile Web Comes of Age Steven J. Vaughan-Nichols T he mobile Web has changed dramatically can do on the Web, said Stephen O'Grady, cofounder of and analyst with Red- Monk, a market research, such as phones, now have larger screens with better resolution, making Web browsing more worthwhile, noted

  15. Eucalyptus fuelwood growth rate improves with age

    E-Print Network [OSTI]

    Eucalyptus fuelwood growth rate improves with age Dean R. Donaldson 0 Richard B. Standiford I n The two species of Eucalyptus were the fastest growing of the five tree spe- cies evaluated at Grant Street (table 1). Manna gum, Eucalyptus viminalis, al- though about a year younger, is signifi- cantly

  16. Utah Commission on Aging April 1, 2008

    E-Print Network [OSTI]

    Tipple, Brett

    Lake County Aging Services Lynne Shaffer for Deborah Bayle United Way Archie Archuleta Ethnic Minorities William Cox Utah Association of Counties Alan Ormsby for LM Church Utah Department of Human or sold to other providers for underserved areas. The Medicaid Task Force was not renewed. Alan Ormsby

  17. ANNUAL CONFERENCE ON SUCCESSFUL AGING FINDING BALANCE

    E-Print Network [OSTI]

    3RD ANNUAL CONFERENCE ON SUCCESSFUL AGING FINDING BALANCE: ENHANCING PHYSICAL, EMOTIONAL, and how to improve them. Finding Balance Supports Our Well-Being. Dr. Glisky will talk about how balance in humans; Evolutionary medicine. Balance Exercises and Fitness to Prevent Injuries and Cognitive Decline

  18. AGE -A HEA Cancer FoRs

    E-Print Network [OSTI]

    Balasuriya, Sanjeeva

    CANCER CANCER R REVIEW D DR ADAM B FoRs RESEARCH DOCUMENT BUTLER, RE H COVERA T ESEARCH P AGE;Cancer FoRs 5 June 2013 Page 2 BACKGROUND This document was created for the Health and Medical Research Strategic Review and attempts to outline the coverage of cancer research throughout the university

  19. Discouraging Software Piracy Using Software Aging

    E-Print Network [OSTI]

    Discouraging Software Piracy Using Software Aging Markus Jakobsson Michael Reiter Abstract Most people consider frequent software updates a nuisance. However, we show how this common phenomenon can be turned into a feature that protects against software piracy. We define a protocol for "drop-in" upgrades

  20. Stone Age Distributed Computing (Extended Abstract)

    E-Print Network [OSTI]

    Stone Age Distributed Computing (Extended Abstract) Yuval Emek Distributed Computing Group ETH Zurich, Switzerland yemek@ethz.ch Roger Wattenhofer Distributed Computing Group ETH Zurich, Switzerland and cellular automata is suitable for applying the distributed computing lens to the study of networks of sub

  1. STRAIN AGING OF AUSTENITIC HADFIELD MANGANESE STEEL

    E-Print Network [OSTI]

    Grujicic, Mica

    STRAIN AGING OF AUSTENITIC HADFIELD MANGANESE STEEL W. S. OWEN1 { and M. GRUJICIC2 1 Department®eld steel is discussed in terms of the interstitial octahedron, local-order model, which de®nes order on the metal sublattice are frozen on sites determined either by the high-temperature equilibrium anneal

  2. Deactivation of Accelerated Engine-Aged and Field-Aged SCR Catalysts and the Role of the DOC

    Broader source: Energy.gov [DOE]

    A technique for accelerated aging of SCR system (DOC -> SCR-> DPF) reveals two deactivation mechanisms and replicates field-aged effects

  3. A novel variable-distance antenna test range and high spatial resolution corroboration of the inverse square law for 433.5 MHz radiation

    E-Print Network [OSTI]

    de Haën, Christoph; Erhardt, Matthias

    2015-01-01

    A novel, low-budget, open-air, slant-geometry antenna test range for UHF radiation is presented. It was designed primarily to facilitate variation of the distance between emitter and receiver antennas, but has also the potential for adaptation to simultaneous variation of distance and receiver antenna orientation. In support of the validity of the range the inverse square law for 433.5 MHz radiation between two naked half-wave dipole antennas was tested with high spatial resolution from close to the far field limit outward to 46 wavelengths. Sine amplitude input voltage at the receiver antenna varied with the distance to the power -0.9970 +/- 0.0051 (R^2 = 0.992), thus corroborating the inverse square law for transmission power at the lowest frequency for which thus far data have been published. Keywords: inverse square law; dipole antenna; test facility; electromagnetic propagation; UHF measurements; distance dependence.

  4. Ages of globular clusters: breaking the age-distance degeneracy with the luminosity function

    E-Print Network [OSTI]

    Paolo Padoan; Raul Jimenez

    1996-03-14

    We extend our previous method to determine globular cluster ages using the luminosity function (Jimenez \\& Padoan 1996). We show that the luminosity function depends on both age and distance modulus and that it is possible to distinguish between the two. This method provides at the same time independent determinations of distance and age of a GC by simply counting the number of stars found inside specified luminosity bins. The main uncertainties in other traditional methods for determining GCs ages are absent (e.g. mixing length, color-$T_{\\rm eff}$ calibration, morphology of the color-magnitude diagram ). The distance modulus is the biggest uncertainty in determining the age of GCs. Here we show that the age can be determined with small uncertainty for any value of distance modulus using the LF and that the LF allows a determination of the distance modulus itself. This is explained by the fact that the luminosity function is affected by a change in distance-modulus in a way that is different from its time evolution. If GC stellar counts with statistical errors not larger than $3\\%$ are available, the age can be determined with an uncertainty of about 0.4 Gyr (independent of distance modulus, mixing length and color calibration) and the distance modulus with an uncertainty of about 0.04 mag.

  5. Age and growth of red hind Epinephelus guttatus in

    E-Print Network [OSTI]

    analysis (Thompson and Munro 1974). However, neither study is recent and neither validated the ageing

  6. A Compositional and Dynamic Model for Face Aging

    E-Print Network [OSTI]

    Zhu, Song Chun

    A Compositional and Dynamic Model for Face Aging Jinli Suo, Song-Chun Zhu, Shiguang Shan, Member model for face aging. The compositional model represents faces in each age group by a hierarchical And.) crucial for age perception and Or nodes represent large diversity of faces by alternative selections

  7. Inverse Square Law Introduction

    E-Print Network [OSTI]

    Vickers, James

    due to the independent sources A and B with powers WZ and WB, taking advantage of the symmetryq2 (q2 +m2 ) and collecting together like powers of q produces a quartic equation, 4IDq4 + [4m2 ID intensity (I Wm-2 ) on distance (r m) from a source. For a single source of sound power W watts

  8. Concord Four Square Retrofit

    SciTech Connect (OSTI)

    2010-07-09

    This case study describes the retrofit of a home in West Concord, Massachusetts that proved that a 50% reduction in home energy use could be met today in existing housing.

  9. Texas Tech University Energy Savings Program April 2006 Update

    E-Print Network [OSTI]

    Zhuang, Yu

    for operation and maintenance. New initiatives will continue to be collected and shared with appropriate vehicle energy reduction goal. A. Energy Goals 1. Campus Energy Use Energy units are converted to mmbtu to allow to current energy costs and campus square footage. Utility Goal Actual % Change Est. Savings Electricity 0

  10. Texas Tech University Energy Savings Program July 2006 Update

    E-Print Network [OSTI]

    Gelfond, Michael

    for operation and maintenance. New initiatives will continue to be collected and shared with appropriate vehicle energy reduction goal. A. Energy Goals 1. Campus Energy Use Energy units are converted to mmbtu to allow to current energy costs and campus square footage. Utility FY05 Actual % Change Est. Savings Electricity

  11. Compilation of Diversity Factors and Schedules for Energy and Cooling Load Calculations, ASHRAE Research Project 1093-RP, Final Report 

    E-Print Network [OSTI]

    Abushakra, B.; Sreshthaputra, A.; Haberl, J. S.; Claridge, D. E.

    2001-01-01

    from the diversity factors are then compared with the EUI?s calculated directly from the raw data (Total kWh per year divided by the square footage) to assure that the data manipulation during the derivation of the diversity factors is free...

  12. [Major revisionposted 10/18/13 (replaces 12/14/95 edition)] Operating Policy and Procedure

    E-Print Network [OSTI]

    Rock, Chris

    , charges are estimated, usually based on square footage. Rates for manufactured utilities such as steam of the actual or estimated charges for each type of utility used in a billing, or it may be an overall charge ­ In almost all buildings, electric consumption is metered by the building. All are charged the vendor rate

  13. Summary of Environmental Performance at Harvard Greenhouse Gas Emissions from Harvard University

    E-Print Network [OSTI]

    and renewable energy purchases and on-site generation have not been made. 0 50 100 150 200 250 300 2006 2007 Campus (including any growth in square footage or usage). The data in the table indicate a 7% decline Buildings 18% All Buildings 7% 257 Harvard University Fact Book 2011-12: Environmental Performance 1 #12

  14. Space and Movable Equipment On-line Inventory

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Expense Movable Equipment Depreciation Expense Operation & Maintenance Expenses Library Expenses with government requirements · Develop proposal statistics that are defensible during F&A rate negotiations of the space functional usage (i.e. square footage statistics). » Federal regulations require the allocation

  15. Direct tests of single-parameter aging

    E-Print Network [OSTI]

    Tina Hecksher; Niels Boye Olsen; Jeppe C. Dyre

    2015-06-12

    This paper presents accurate data for the physical aging of organic glasses just below the glass transition probed by monitoring the following quantities after temperature up and down jumps: the shear-mechanical resonance frequency (around 360 kHz), the dielectric loss at 1 Hz, the real part of the dielectric constant at 10 kHz, and the loss-peak frequency of the dielectric beta process (around 10 kHz). The setup used allows for keeping temperature constant within 100 micro Kelvin and for thermal equilibration within a few seconds after a temperature jump. The data conform to a new simplified version of the classical Tool-Narayanaswamy aging formalism, which makes it possible to calculate one relaxation curve directly from another without any fitting to analytical functions.

  16. Human Age Estimation From Skeletal and Dental Human Age Estimation From Skeletal and Dental

    E-Print Network [OSTI]

    Lucy, David

    and Section for Forensic Odontology, Oslo, Norway, for willingly providing what must be the world's most, likelihood, senescence, ageing, hard-tissue. Anthropologists and forensic scientists have found adult human

  17. Executive dysfunction in aging: Are Virtual Reality environments valid within the context of normal aging

    E-Print Network [OSTI]

    Webster, Holly E

    2008-06-27

    The objective of the current study was to assess how applicable developments in the use of virtual reality paradigms were in the studying of executive functioning within a normally aging sample. Traditional measures such as the Tower of London task...

  18. The Physics of the Cold Neutral Medium: Low-frequency Carbon Radio Recombination Lines with the Square Kilometre Array

    E-Print Network [OSTI]

    Oonk, J B R; Salgado, F; Toribio, M C; van Weeren, R J; Tielens, A G G M; Rottgering, H J A

    2015-01-01

    The Square Kilometre Array (SKA) will transform our understanding of the role of the cold, atomic gas in galaxy evolution. The interstellar medium (ISM) is the repository of stellar ejecta and the birthsite of new stars and, hence, a key factor in the evolution of galaxies over cosmic time. Cold, diffuse, atomic clouds are a key component of the ISM, but so far this phase has been difficult to study, because its main tracer, the HI 21 cm line, does not constrain the basic physical information of the gas (e.g., temperature, density) well. The SKA opens up the opportunity to study this component of the ISM through a complementary tracer in the form of low-frequency (<350 MHz) carbon radio recombination lines (CRRL). These CRRLs provide a sensitive probe of the physical conditions in cold, diffuse clouds. The superb sensitivity, large field of view, frequency resolution and coverage of the SKA allows for efficient surveys of the sky, that will revolutionize the field of low-frequency recombination line studie...

  19. Imprints of deviations from the gravitational inverse-square law on the power spectrum of mass fluctuations

    E-Print Network [OSTI]

    M. Sereno; J. A. Peacock

    2006-05-19

    Deviations from the gravitational inverse-square law would imprint scale-dependent features on the power spectrum of mass density fluctuations. We model such deviations as a Yukawa-like contribution to the gravitational potential and discuss the growth function in a mixed dark matter model with adiabatic initial conditions. Evolution of perturbations is considered in general non-flat cosmological models with a cosmological constant, and an analytical approximation for the growth function is provided. The coupling between baryons and cold dark matter across recombination is negligibly affected by modified gravity physics if the proper cutoff length of the long-range Yukawa-like force is > 10 h^{-1} Mpc. Enhancement of gravity affects the subsequent evolution, boosting large-scale power in a way that resembles the effect of a lower matter density. This phenomenon is almost perfectly degenerate in power-spectrum shape with the effect of a background of massive neutrinos. Back-reaction on density growth from a modified cosmic expansion rate should however also affect the normalization of the power spectrum, with a shape distortion similar to the case of a non-modified background.

  20. Functional Neuroimaging Studies of Aging and Emotion 1 RUNNING HEAD: Functional Neuroimaging Studies of Aging and Emotion

    E-Print Network [OSTI]

    Cabeza, Roberto

    Functional Neuroimaging Studies of Aging and Emotion 1 RUNNING HEAD: Functional Neuroimaging Studies of Aging and Emotion Functional Neuroimaging Studies of Aging and Emotion: Fronto:peggy.st.jacques@duke.edu #12;Functional Neuroimaging Studies of Aging and Emotion 2 Abstract Emotional processes are enhanced

  1. Insights into accelerated aging of SSL luminaires

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Davis, J. Lynn; Lamvik, Michael; Bittle, James; Shepherd, Sarah; Yaga, Robert; Baldasaro, Nick; Solano, Eric; Bobashev, Georgiy

    2013-09-30

    Although solid-state lighting (SSL) products are often intended to have product lifetimes of 15 years or more, the rapid change in technology has created a need for accelerated life tests (ALTs) that can be performed in the span of several months. A critical element of interpreting results from any systems-level ALT is understanding of the impact of the test environment on each component. Because of its ubiquity in electronics, the use of temperature-humidity environments as potential ALTs for SSL luminaires was investigated. Results from testing of populations of three commercial 6” downlights in environments of 85oC and 85% relative humiditymore »(RH) and 75oC and 75% RH are reported. These test environments were found to accelerate lumen depreciation of the entire luminaire optical system, including LEDs, lenses, and reflectors. The effects of aging were found to depend strongly on both the optical materials that were used and the design of the luminaire; this shows that the lumen maintenance behavior of SSL luminaires must be addressed at the optical systems level. Temperature-Humidity ALTs can be a useful test in understand lumainaire depreciation provided that proper consideration is given to the different aging rates of various materials. Since the impact of the temperature-humidity environment varies among components of the optical system, uniform aging of all system components in a single test is difficult to achieve.« less

  2. Insights into accelerated aging of SSL luminaires

    SciTech Connect (OSTI)

    Davis, J. Lynn; Lamvik, Michael; Bittle, James; Shepherd, Sarah; Yaga, Robert; Baldasaro, Nick; Solano, Eric; Bobashev, Georgiy

    2013-09-30

    Although solid-state lighting (SSL) products are often intended to have product lifetimes of 15 years or more, the rapid change in technology has created a need for accelerated life tests (ALTs) that can be performed in the span of several months. A critical element of interpreting results from any systems-level ALT is understanding of the impact of the test environment on each component. Because of its ubiquity in electronics, the use of temperature-humidity environments as potential ALTs for SSL luminaires was investigated. Results from testing of populations of three commercial 6” downlights in environments of 85oC and 85% relative humidity (RH) and 75oC and 75% RH are reported. These test environments were found to accelerate lumen depreciation of the entire luminaire optical system, including LEDs, lenses, and reflectors. The effects of aging were found to depend strongly on both the optical materials that were used and the design of the luminaire; this shows that the lumen maintenance behavior of SSL luminaires must be addressed at the optical systems level. Temperature-Humidity ALTs can be a useful test in understand lumainaire depreciation provided that proper consideration is given to the different aging rates of various materials. Since the impact of the temperature-humidity environment varies among components of the optical system, uniform aging of all system components in a single test is difficult to achieve.

  3. Anti-Oxidants, Omega-3 Fatty Acids, and Cognitive Decline with Aging

    E-Print Network [OSTI]

    Patel, Tanu Ashok

    2011-01-01

    neurobiology of cognitive aging”. Ageing Research Reviewsinterventions. Neurobiology of Aging , 133-136. Cutler, R.1991). Antioxidants and aging. American Journal of Clinical

  4. Proton-? [Proton - lambda] correlations in central Pb + Pb collisions at ?sNN [square root of s subscript NN] =17.3 GeV

    E-Print Network [OSTI]

    Roland, Christof E.

    The momentum correlation between protons and ? [lambda] particles emitted from central Pb+Pb collisions at ?sNN=17.3 [square root of s subscript NN = 17.3] GeV was studied by the NA49 experiment at the CERN Super Proton ...

  5. 26.1 / M. Doshi 26.1: Low-Frequency Square-Wave Drive for Large Screen LCD-TV

    E-Print Network [OSTI]

    at Boulder, Boulder, CO-80309 0425 Francisco J. Azcondo Electronics Technology, Systems and Automation, Spain Abstract This paper presents a low-frequency square-wave drive, consisting of a single high accurate lamp current regulation. Key to the architecture is a proposed capacitive coupling approach for ac

  6. MATHEMATICS PROMOTION UNIT DE MORGAN HOUSE 57-58 RUSSELL SQUARE LONDON WC1B 4HS 020 7927 0804 MPU@LMS.AC.UK

    E-Print Network [OSTI]

    Abrahams, I. David

    MATHEMATICS PROMOTION UNIT DE MORGAN HOUSE 57-58 RUSSELL SQUARE LONDON WC1B 4HS · 020 7927 0804 · MPU@LMS.AC.UK The Mathematics Promotion Unit is a joint venture between the London Mathematical Society and the Institute of Mathematics and its Applications. It aims to raise awareness of mathematical

  7. Area and Volume Problems 1. Given the formula for the area of a square, derive the formula for the area of a rectangle

    E-Print Network [OSTI]

    Lee, Carl

    Area and Volume Problems 1. Given the formula for the area of a square, derive the formula for the area of a rectangle of dimensions a and b. 2. Given the formula for the area of a rectangle, derive the formula for the area of a parallelogram of base b and height h. 3. Use calculus to derive the formula

  8. Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at [square root of] s=7??TeV

    E-Print Network [OSTI]

    Alver, Burak Han

    A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at ?s=7??[square root of s=7] TeV, is described. The data sample of the ...

  9. 3180 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 9, SEPTEMBER 2008 Digital Control of a Low-Frequency Square-Wave

    E-Print Network [OSTI]

    3180 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 9, SEPTEMBER 2008 Digital Control of a Low-Frequency Square-Wave Electronic Ballast With Resonant Ignition F. Javier Díaz, Francisco J) electronic ballast with digital control. The first stage of the ballast is a power factor correction (PFC

  10. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 58, NO. 5, MAY 2010 2911 Fig. 3 shows the mean square error as a function of the term N=w,

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 58, NO. 5, MAY 2010 2911 Fig. 3 shows the mean square. Mergen and L. Tong, "Type based estimation over multiaccess chan- nels," IEEE Trans. Signal Process., vol Trans. Signal Process., vol. 55, no. 11, pp. 5155­5166, Nov. 2007. [7] K. S. Gomadam and S. A. Jafar

  11. Anisotropic mean-square displacements in two-dimensional colloidal crystals of tilted dipoles V. A. Froltsov, C. N. Likos, and H. Lwen

    E-Print Network [OSTI]

    Likos, Christos N.

    Anisotropic mean-square displacements in two-dimensional colloidal crystals of tilted dipoles V. A the crystal aniso- tropy or not. Here we study an anisotropic two-dimensional colloidal crystal composed; revised manuscript received 7 February 2005; published 31 March 2005 Superparamagnetic colloidal particles

  12. Search for rare events in [the square root of sigma nu nu] = 200 GeV Au+Au PHOBOS data

    E-Print Network [OSTI]

    Mott, Alexander (Alexander Robert)

    2009-01-01

    In this analysis, we set an upper bound on the rate of rare events: events whose dN/dn distribution deviates more than statistically from the ensemble average dN/dn distribution for s [the square root of sigma nu nu] = 200 ...

  13. Observations of magnetic fields in the Milky Way and in nearby galaxies with a Square Kilometre Array

    E-Print Network [OSTI]

    R. Beck; B. M. Gaensler

    2004-10-26

    The role of magnetic fields in the dynamical evolution of galaxies and of the interstellar medium (ISM) is not well understood, mainly because such fields are difficult to directly observe. Radio astronomy provides the best tools to measure magnetic fields: synchrotron radiation traces fields illuminated by cosmic-ray electrons, while Faraday rotation and Zeeman splitting allow us to detect fields in all kinds of astronomical plasmas, from lowest to highest densities. Here we describe how fundamental new advances in studying magnetic fields, both in our own Milky Way and in other nearby galaxies, can be made through observations with the proposed Square Kilometre Array. Underpinning much of what we propose is an all-sky survey of Faraday rotation, in which we will accumulate tens of millions of rotation measure measurements toward background radio sources. This will provide a unique database for studying magnetic fields in individual Galactic supernova remnants and HII regions, for characterizing the overall magnetic geometry of our Galaxy's disk and halo, and for understanding the structure and evolution of magnetic fields in galaxies. Also of considerable interest will be the mapping of diffuse polarized emission from the Milky Way in many narrow bands over a wide frequency range. This will allow us to carry out Faraday tomography of the Galaxy, yielding a high-resolution three-dimensional picture of the magnetic field within a few kpc of the Sun, and allowing us to understand its coupling to the other components of the ISM. Finally, direct synchrotron imaging of a large number of nearby galaxies, combined with Faraday rotation data, will allow us to determine the magnetic field structure in these sources, and to test both the dynamo and primordial field theories for field origin and amplification.

  14. Aging analyses of aircraft wire insulation

    SciTech Connect (OSTI)

    GILLEN,KENNETH T.; CLOUGH,ROGER LEE; CELINA,MATHIAS C.; AUBERT,JAMES H.; MALONE,G. MICHAEL

    2000-05-08

    Over the past two decades, Sandia has developed a variety of specialized analytical techniques for evaluating the long-term aging and stability of cable insulation and other related materials. These techniques have been applied to cable reliability studies involving numerous insulation types and environmental factors. This work has allowed the monitoring of the occurrence and progression of cable material deterioration in application environments, and has provided insights into material degradation mechanisms. It has also allowed development of more reliable lifetime prediction methodologies. As a part of the FAA program for intrusive inspection of aircraft wiring, they are beginning to apply a battery of techniques to assessing the condition of cable specimens removed from retired aircraft. It is anticipated that in a future part of this program, they may employ these techniques in conjunction with accelerated aging methodologies and models that the authros have developed and employed in the past to predict cable lifetimes. The types of materials to be assessed include 5 different wire types: polyimide, PVC/Glass/Nylon, extruded XL-polyalkene/PVDF, Poly-X, and XL-ETFE. This presentation provides a brief overview of the main techniques that will be employed in assessing the state of health of aircraft wire insulation. The discussion will be illustrated with data from their prior cable aging studies, highlighting the methods used and their important conclusions. A few of the techniques that they employ are widely used in aging studies on polymers, but others are unique to Sandia. All of their techniques are non-proprietary, and maybe of interest for use by others in terms of application to aircraft wiring analysis. At the end of this report is a list showing some leading references to papers that have been published in the open literature which provide more detailed information on the analytical techniques for elastomer aging studies. The first step in the investigation of aircraft wiring is to evaluate the applicability of their various techniques to aircraft cables, after which they expect to identify a limited subset of techniques which are appropriate for each of the major aircraft wiring types. The techniques of initial interest in the studies of aging aircraft wire are as follows: optical microscopy; mandrel bend test; tensile test/elongation at break; density measurements; modulus profiling/(spatially-resolved micro-hardness); oxygen induction time/oxygen induction temperature (by differential scanning calorimetry); solvent-swelling/gel fraction; infrared spectroscopy (with chemical derivatization as warranted); chemiluminescence; thermo-oxidative wear-out assessment; The first two techniques are the simplest and quickest to apply; those further down the list tend to be more information rich and in some cases more sensitive, but also generally more specialized and more time consuming to run. Accordingly, the procedure will be to apply the simplest tests for purposes of preliminary screening of large numbers of samples. For any given material type, it can be expected that only a limited number of the other techniques will prove to be useful, and therefore, the more specialized techniques will be used on a limited number of selected samples. Samples of aircraft wiring have begun to be released to the authors in late April; they include in this report some limited and preliminary data on these materials.

  15. On the seismic age of the Sun

    E-Print Network [OSTI]

    G. Houdek; D. O. Gough

    2007-10-03

    We use low-degree acoustic modes obtained by the BiSON to estimate the main-sequence age $t_\\odot$ of the Sun. The calibration is accomplished by linearizing the deviations from a standard solar model the seismic frequencies of which are close to those of the Sun. Formally, we obtain the preliminary value $t_\\odot=4.68\\pm0.02 $Gy, coupled with an initial heavy-element abundance $Z=0.0169\\pm0.0005$. The quoted standard errors, which are not independent, are upper bounds implied under the assumption that the standard errors in the observed frequencies are independent.

  16. Asian Age Enterprise Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC Jump to: navigation,SummariesAshman Technologies JumpAge

  17. Rock of Ages | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-bRenewable Energy|Gas and Electricof Ages Jump to:

  18. AGE UFMG Incubator | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand Dalton JumpProgram |RecentSulfonateAFV SolutionsEnergyOpenAGE UFMG

  19. Activation of the metabolic sensor-AMP activated protein kinase reverses impairment of angiogenesis in aging myocardial microvascular endothelial cells. Implications for the aging heart.

    E-Print Network [OSTI]

    Ahluwalia, A; Tarnawski, A S

    2011-01-01

    AS. Impaired angiogenesis in aging myocardial microvascularprotein kinase enzyme in aging myocardial microvascularphosphorylated) AMPK in aging MMECs 2.1-fold (P<0.01) vs.

  20. Enzyme Structure Provides Insights into Cancer and Aging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Enzyme Structure Provides Insights into Cancer and Aging Enzyme Structure Provides Insights into Cancer and Aging Print Wednesday, 25 February 2009 00:00 XPD helicase is an enzyme...

  1. Sean; Tanner, Danelle Mary 47 OTHER INSTRUMENTATION; AGING; SENSORS...

    Office of Scientific and Technical Information (OSTI)

    an aging experiment that was established in FY09 and completed in FY10 for the Sandia MEMS Passive Shock Sensor. A total of 37 packages were aged at different temperatures and...

  2. Age Dating of Mixed SNM--Preliminary Investigations

    SciTech Connect (OSTI)

    Yuan, D., Guss, P. P., Yfantis, E., Klingensmith, A., Emer, D.

    2011-12-01

    Recently we investigated the nuclear forensics problem of age determination for mixed special nuclear material (SNM). Through limited computational mixing experiments and interactive age analysis, it was observed that age dating results are generally affected by the mixing of samples with different assays or even by small radioactive material contamination. The mixing and contamination can be detected through interactive age analysis, a function provided by the Decay Interaction, Visualization and Analysis (DIVA) software developed by NSTec. It is observed that for mixed SNM with two components, the age estimators typically fall into two distinct clusters on the time axis. This suggests that averaging or other simple statistical methods may not always be suitable for age dating SNM mixtures. Instead, an interactive age analysis would be more suitable for age determination of material components of such SNM mixtures. This work was supported by the National Center for Nuclear Security (NCNS).

  3. Fact #614: March 15, 2010 Average Age of Household Vehicles

    Broader source: Energy.gov [DOE]

    The average age of household vehicles has increased from 6.6 years in 1977 to 9.2 years in 2009. Pickup trucks have the oldest average age in every year listed. Sport utility vehicles (SUVs), first...

  4. Managing Aging Effects on Dry Cask Storage Systems for Extended...

    Office of Environmental Management (EM)

    Managing Aging Effects on Dry Cask Storage Systems for Extended Long Term Storage and Transportation of Used Fuel Rev0 Managing Aging Effects on Dry Cask Storage Systems for...

  5. 2014 Healthy Aging Alliance Conference "Harnessing Science and Communities

    E-Print Network [OSTI]

    Chapman, Michael S.

    2014 Healthy Aging Alliance Conference "Harnessing Science and Communities for Healthy Brain Aging:45 ­ 4:45 pm Hosted by the OHSU Healthy Aging Alliance in Partnership with: Portland State UniversityDigitalPhotos.net Alliance Co-Chairs Elizabeth Eckstrom, MD, MPH eckstrom@ohsu.edu Henryk Urbanski, PhD, DSc urbanski

  6. Virtual Age: Enabling Technologies and Trends Hamid Mahmoodi 1

    E-Print Network [OSTI]

    Mahmoodi, Hamid

    . This much-needed breakthrough manifested itself in the form of the industrial revolution. Industrial revolution signaled the end of the Agricultural Age and moved the human society forward towards the Industrial Age which lasted for about 500 years. In this age, great inventions, such as, the steam engine

  7. Surface Aging by Impacts Eric Paquettea,b

    E-Print Network [OSTI]

    Montréal, Université de

    Surface Aging by Impacts Eric Paquettea,b Pierre Poulina George Drettakisb a LIGUM DIRO, Universit aging technique that simulates the deformation of an object caused by repetitive impacts over long aging effects of repetitive impacts, significantly in- creasing their realism. Key words: Realism

  8. Aging and Complexity in Equilibrium Dynamics K. Ehrenberger

    E-Print Network [OSTI]

    Svozil, Karl

    Aging and Complexity in Equilibrium Dynamics K. Ehrenberger ENT Department, University of Vienna W age, the fractal dimension of the graph of postural stability decreases. From the many aspects of aging, the possible loss of complexity of cer- tain physiological functions and processes is seldomly

  9. Aging, Estrogen Loss and Epoxyeicosatrienoic Acids Alison R. Lee1.

    E-Print Network [OSTI]

    Hammock, Bruce D.

    Aging, Estrogen Loss and Epoxyeicosatrienoic Acids (EETs) Alison R. Lee1. , Angela S. Pechenino1 loss, caused by menopause, and aging have inflammatory consequences. Epoxyeicosatrienoic acids (EETs cyclooxygenases and lipoxygenases. We hypothesized that aging and estrogen loss would reduce levels of anti

  10. Aging and Complexity in Equilibrium Dynamics K. Ehrenberger

    E-Print Network [OSTI]

    Svozil, Karl

    Aging and Complexity in Equilibrium Dynamics K. Ehrenberger ENT Department, University of Vienna W With increasing age, the fractal dimension of the graph of postural stability decreases. From the many aspects of aging, the possible loss of complexity of cer­ tain physiological functions and processes is seldomly

  11. Emerging perspectives in social neuroscience and neuroeconomics of aging

    E-Print Network [OSTI]

    Mather, Mara

    Emerging perspectives in social neuroscience and neuroeconomics of aging Lisbeth Nielsen1 and Mara Mather2 1 Division of Behavioral and Social Research, National Institute on Aging/National Institutes and Affective Neuroscience on Aging Research, and offers a broad conceptual and methodological framework

  12. A Markovian, Variation-Aware Circuit-Level Aging Model

    E-Print Network [OSTI]

    Cotofana, Sorin

    A Markovian, Variation-Aware Circuit-Level Aging Model Nicoleta Cucu Laurenciu, and Sorin Dan.CucuLaurenciu, S.D.Cotofana}@tudelft.nl Abstract--Accurate age modeling, and fast, yet robust relia- bility sign at design-time appropriate guardbands selection and effective aging mitigation/compensation techniques

  13. SU-F-18C-14: Hessian-Based Norm Penalty for Weighted Least-Square CBCT Reconstruction

    SciTech Connect (OSTI)

    Sun, T; Sun, N; Tan, S; Wang, J

    2014-06-15

    Purpose: To develop a Hessian-based norm penalty for cone-beam CT (CBCT) reconstruction that has a similar ability in suppressing noise as the total variation (TV) penalty while avoiding the staircase effect and better preserving low-contrast objects. Methods: We extended the TV penalty to a Hessian-based norm penalty based on the Frobenius norm of the Hessian matrix of an image for CBCT reconstruction. The objective function was constructed using the penalized weighted least-square (PWLS) principle. An effective algorithm was developed to minimize the objective function using a majorization-minimization (MM) approach. We evaluated and compared the proposed penalty with the TV penalty on a CatPhan 600 phantom and an anthropomorphic head phantom, each acquired at a low-dose protocol (10mA/10ms) and a high-dose protocol (80mA/12ms). For both penalties, contrast-to-noise (CNR) in four low-contrast regions-of-interest (ROIs) and the full-width-at-half-maximum (FWHM) of two point-like objects in constructed images were calculated and compared. Results: In the experiment of CatPhan 600 phantom, the Hessian-based norm penalty has slightly higher CNRs and approximately equivalent FWHM values compared with the TV penalty. In the experiment of the anthropomorphic head phantom at the low-dose protocol, the TV penalty result has several artificial piece-wise constant areas known as the staircase effect while in the Hessian-based norm penalty the image appears smoother and more similar to that of the FDK result using the high-dose protocol. Conclusion: The proposed Hessian-based norm penalty has a similar performance in suppressing noise to the TV penalty, but has a potential advantage in suppressing the staircase effect and preserving low-contrast objects. This work was supported in part by National Natural Science Foundation of China (NNSFC), under Grant Nos. 60971112 and 61375018, and Fundamental Research Funds for the Central Universities, under Grant No. 2012QN086.

  14. These guidelines were approved in June 2011 by the Williams College Board of Trustees. In 1991, the College's physical plant measured 1.9 million square feet; by 2007 it had grown

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    , Williams must continue to find ways to reduce energy use and to ensure that new building and renovation of service. 2. The planning and design of a building or renovation program will establish energy goals% to 2.4 million square feet. At the same time, its energy use per square foot increased 20%. The student

  15. Minute Effects of Sex on the Aging Brain: A Multisample Magnetic Resonance Imaging Study of Healthy Aging and Alzheimer's Disease

    E-Print Network [OSTI]

    Fjell, Anders M.

    Age is associated with substantial macrostructural brain changes. While some recent magnetic resonance imaging studies have reported larger age effects in men than women, others find no sex differences. As brain morphometry ...

  16. Dark Energy in the Dark Ages

    E-Print Network [OSTI]

    Eric V. Linder

    2006-04-11

    Non-negligible dark energy density at high redshifts would indicate dark energy physics distinct from a cosmological constant or ``reasonable'' canonical scalar fields. Such dark energy can be constrained tightly through investigation of the growth of structure, with limits of \\la2% of total energy density at z\\gg1 for many models. Intermediate dark energy can have effects distinct from its energy density; the dark ages acceleration can be constrained to last less than 5% of a Hubble e-fold time, exacerbating the coincidence problem. Both the total linear growth, or equivalently \\sigma_8, and the shape and evolution of the nonlinear mass power spectrum for zenergy behavior over the entire range z=0-1100.

  17. Accelerated Aging of Polymer Composite Bridge Materials

    SciTech Connect (OSTI)

    Carlson, Nancy Margaret; Blackwood, Larry Gene; Torres, Lucinda Laine; Rodriguez, Julio Gallardo; Yoder, Timothy Scott

    1999-03-01

    Accelerated aging research on samples of composite material and candidate ultraviolet (UV) protective coatings is determining the effects of six environmental factors on material durability. Candidate fastener materials are being evaluated to determine corrosion rates and crevice corrosion effects at load-bearing joints. This work supports field testing of a 30-ft long, 18-ft wide polymer matrix composite (PMC) bridge at the Idaho National Engineering and Environmental Laboratory (INEEL). Durability results and sensor data from tests with live loads provide information required for determining the cost/benefit measures to use in life-cycle planning, determining a maintenance strategy, establishing applicable inspection techniques, and establishing guidelines, standards, and acceptance criteria for PMC bridges for use in the transportation infrastructure.

  18. Passive absolute age and temperature history sensor

    SciTech Connect (OSTI)

    Robinson, Alex; Vianco, Paul T.

    2015-11-10

    A passive sensor for historic age and temperature sensing, including a first member formed of a first material, the first material being either a metal or a semiconductor material and a second member formed of a second material, the second material being either a metal or a semiconductor material. A surface of the second member is in contact with a surface of the first member such that, over time, the second material of the second member diffuses into the first material of the first member. The rate of diffusion for the second material to diffuse into the first material depends on a temperature of the passive sensor. One of the electrical conductance, the electrical capacitance, the electrical inductance, the optical transmission, the optical reflectance, or the crystalline structure of the passive sensor depends on the amount of the second material that has diffused into the first member.

  19. Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates 

    E-Print Network [OSTI]

    Tanskyi, Oleksandr

    2012-02-14

    parameters for the Wisenbaker Engineering Research Center HVAC system simulation model.................................................................. 66 Table 3.8. DOE-2.1E system hourly reports variables... used in commercial buildings design are not adequate to save energy in both depth (savings per square foot) and scale (square footage improved each year) (RMI 2010). There are several ways to decrease energy consumption and CO2 emission caused...

  20. Aging management guideline for commercial nuclear power plants - heat exchangers

    SciTech Connect (OSTI)

    Booker, S.; Lehnert, D.; Daavettila, N.; Palop, E.

    1994-06-01

    This Aging Management Guideline (AMG) describes recommended methods for effective detection and mitigation of age-related degradation mechanisms in commercial nuclear power plant heat exchangers important to license renewal. The intent of this AMG is to assist plant maintenance and operations personnel in maximizing the safe, useful life of these components. It also supports the documentation of effective aging management programs required under the License Renewal Rule 10 CFR 54. This AMG is presented in a manner that allows personnel responsible for performance analysis and maintenance to compare their plant-specific aging mechanisms (expected or already experienced) and aging management program activities to the more generic results and recommendations presented herein.

  1. Aging generates regular motions in weakly chaotic systems

    E-Print Network [OSTI]

    Takuma Akimoto; Eli Barkai

    2012-09-27

    Using intermittent maps with infinite invariant measures, we investigate the universality of time-averaged observables under aging conditions. According to Aaronson-Darling-Kac theorem, in non-aged dynamical systems with infinite invariant measures, the distribution of the normalized time averages of integrable functions converge to the Mittag-Leffler distribution. This well known theorem holds when the start of observations coincides with the start of the dynamical processes. Introducing a concept of the aging limit where the aging time $t_a$ and the total measurement time $t$ goes to infinity while the aging ratio $t_a/t$ is a constant, we obtain a novel distributional limit theorem of time-averaged observables integrable with respect to the infinite invariant density. Applying the theorem to the Lyapunov exponent in intermittent maps, we find that regular motions and a weakly chaotic behavior coexist in the aging limit. This mixed type of dynamics is controlled by the aging ratio and hence is very different from the usual scenario of regular and chaotic motions in Hamiltonian systems. The probability of finding regular motions in non-aged processes is zero, while in the aging regime it is finite and it increases when system ages.

  2. LIGA microsystems aging : evaluation and mitigation.

    SciTech Connect (OSTI)

    Cadden, Charles H.; Yang, Nancy Y. C.; San Marchi, Christopher W.

    2003-12-01

    The deployment of LIGA structures in DP applications requires a thorough understanding of potential long term physical and chemical changes that may occur during service. While these components are generally fabricated from simple metallic systems such as copper, nickel and nickel alloys, the electroplating process used to form them creates microstructural features which differ from those found in conventional (e.g. ingot metallurgy) processing of such materials. Physical changes in non-equilibrium microstructures may occur due to long term exposure to temperatures sufficient to permit atomic and vacancy mobility. Chemical changes, particularly at the surfaces of LIGA parts, may occur in the presence of gaseous chemical species (e.g. water vapor, HE off-gassing compounds) and contact with other metallic structures. In this study, we have characterized the baseline microstructure of several nickel-based materials that are used to fabricate LIGA structures. Solute content and distribution was found to have a major effect on the electroplated microstructures. Microstructural features were correlated to measurements of hardness and tensile strength. Dormancy testing was conducted on one of the baseline compositions, nickel-sulfamate. Groups of specimens were exposed to controlled thermal cycles; subsequent examinations compared properties of 'aged' specimens to the baseline conditions. Results of our testing indicate that exposure to ambient temperatures (-54 C to 71 C) do not result in microstructural changes that might be expected to significantly effect mechanical performance. Additionally, no localized changes in surface appearance were found as a result of contact between electroplated parts.

  3. Technology and social process : oscillations in Iron Age copper production and power in Southern Jordan

    E-Print Network [OSTI]

    Ben-Yosef, Erez

    2010-01-01

    Valley (Tell Hammeh) and iron mining at Mugharat al-Wardahpress. Patterns of Iron Age Mining and Iron Age Settlementresearch concerning Iron Age mining and metallurgy in the

  4. Vinculin network-mediated cytoskeletal remodeling regulates contractile function in the aging heart

    E-Print Network [OSTI]

    2015-01-01

    of myo- fibrillar perturbation and aging on soft, bilayeredthat mimic the effects of aging. Proc. Natl. Acad. Sci.understanding cardiac aging and for selecting therapeutic

  5. LEAVING THE DARK AGES WITH AMIGA

    SciTech Connect (OSTI)

    Manrique, Alberto; Salvador-Solé, Eduard; Juan, Enric; Rozas, José María; Sagristà, Antoni; Casteels, Kevin [Institut de Ciències del Cosmos, Universitat de Barcelona, UB-IEEC, Martí i Franquès 1, E-08028 Barcelona (Spain); Hatziminaoglou, Evanthia [European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Mnchen (Germany); Bruzual, Gustavo [Centro de Radioastronomía y Astrofísica, UNAM, Campus Morella (Mexico); Magris, Gladis, E-mail: a.manrique@ub.edu [Centro de Investigaciones de Astronomía, Apartado Postal 264, Mérida 5101-A (Venezuela, Bolivarian Republic of)

    2015-01-01

    We present an Analytic Model of Intergalactic-medium and GAlaxy (AMIGA) evolution since the dark ages. AMIGA is in the spirit of the popular semi-analytic models of galaxy formation, although it does not use halo merger trees but interpolates halo properties in grids that are progressively built. This strategy is less memory-demanding and allows one to start modeling at sufficiently high redshifts and low halo masses to have trivial boundary conditions. The number of free parameters is minimized by making a causal connection between physical processes usually treated as independent of each other, which leads to more reliable predictions. However, the strongest points of AMIGA are the following: (1) the inclusion of molecular cooling and metal-poor, population III (Pop III) stars with the most dramatic feedback and (2) accurate follow up of the temperature and volume filling factor of neutral, singly ionized, and doubly ionized regions, taking into account the distinct halo mass functions in those environments. We find the following general results. Massive Pop III stars determine the intergalactic medium metallicity and temperature, and the growth of spheroids and disks is self-regulated by that of massive black holes (MBHs) developed from the remnants of those stars. However, the properties of normal galaxies and active galactic nuclei appear to be quite insensitive to Pop III star properties due to the much higher yield of ordinary stars compared to Pop III stars and the dramatic growth of MBHs when normal galaxies begin to develop, which cause the memory loss of the initial conditions.

  6. Investigation of Aging Mechanisms in Lean NOx Traps | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Investigation of Aging Mechanisms in Lean NOx Traps Functionality of Commercial NOx Storage-Reduction Catalysts and the Development of a Representative Model Development...

  7. Bacteria and the Aging and Longevity of Caenorhabditis elegans

    E-Print Network [OSTI]

    Kim, Dennis H.

    The molecular genetic analysis of longevity of Caenorhabditis elegans has yielded fundamental insights into evolutionarily conserved pathways and processes governing the physiology of aging. Recent studies suggest that ...

  8. Notes on Groundwater Age in Forward and Inverse Modeling

    E-Print Network [OSTI]

    Ginn, Timothy R.; Haeri, Hanieh; Massoudieh, Arash; Foglia, Laura

    2009-01-01

    from radiocarbon dating of groundwater and numerical ?ow andReply to “Comment on groundwater age, life expectancy andanalysis of regional groundwater ?ow. 2. Effect of water-

  9. Space-Age Ceramics Get Their Toughest Test

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Space-Age Ceramics Get Their Toughest Test Print Advanced ceramic composites can withstand the ultrahigh operational temperatures projected for hypersonic jet and next-generation...

  10. A TWO-STRAIN TUBERCULOSIS MODEL WITH AGE OF ...

    E-Print Network [OSTI]

    SIAM (#1) 1035 2001 Apr 10 12:32:38

    2002-05-07

    TB control. The new TB control strategy, directly observed treatment short-course ... Consequently, the age of infection (the time lapsed since infection) is an.

  11. Characterization of Field-Aged Exhaust Gas Recirculation Cooler Deposits

    Broader source: Energy.gov [DOE]

    Characterized field-aged exhaust gas recirculation coolers from 7 engine manufacturers, discussed differences and commonalities, and provided understanding of cooler fouling and prevention.

  12. Power Challenges of Large Scale Research Infrastructures: the Square Kilometer Array and Solar Energy Integration; Towards a zero-carbon footprint next generation telescope

    E-Print Network [OSTI]

    Barbosa, Domingos; Ruiz, Valeriano; Silva, Manuel; Verdes-Montenegro, Lourdes; Santander-Vela, Juande; Maia, Dalmiro; Antón, Sonia; van Ardenne, Arnold; Vetter, Matthias; Kramer, Michael; Keller, Reinhard; Pereira, Nuno; Silva, Vitor

    2012-01-01

    The Square Kilometer Array (SKA) will be the largest Global science project of the next two decades. It will encompass a sensor network dedicated to radioastronomy, covering two continents. It will be constructed in remote areas of South Africa and Australia, spreading over 3000Km, in high solar irradiance latitudes. Solar Power supply is therefore an option to power supply the SKA and contribute to a zero carbon footprint next generation telescope. Here we outline the major characteristics of the SKA and some innovation approaches on thermal solar energy Integration with SKA prototypes.

  13. Theoretical foundation for measuring the groundwater age distribution.

    SciTech Connect (OSTI)

    Gardner, William Payton; Arnold, Bill Walter

    2014-01-01

    In this study, we use PFLOTRAN, a highly scalable, parallel, flow and reactive transport code to simulate the concentrations of 3H, 3He, CFC-11, CFC-12, CFC-113, SF6, 39Ar, 81Kr, 4He and themean groundwater age in heterogeneous fields on grids with an excess of 10 million nodes. We utilize this computational platform to simulate the concentration of multiple tracers in high-resolution, heterogeneous 2-D and 3-D domains, and calculate tracer-derived ages. Tracer-derived ages show systematic biases toward younger ages when the groundwater age distribution contains water older than the maximum tracer age. The deviation of the tracer-derived age distribution from the true groundwater age distribution increases with increasing heterogeneity of the system. However, the effect of heterogeneity is diminished as the mean travel time gets closer the tracer age limit. Age distributions in 3-D domains differ significantly from 2-D domains. 3D simulations show decreased mean age, and less variance in age distribution for identical heterogeneity statistics. High-performance computing allows for investigation of tracer and groundwater age systematics in high-resolution domains, providing a platform for understanding and utilizing environmental tracer and groundwater age information in heterogeneous 3-D systems. Groundwater environmental tracers can provide important constraints for the calibration of groundwater flow models. Direct simulation of environmental tracer concentrations in models has the additional advantage of avoiding assumptions associated with using calculated groundwater age values. This study quantifies model uncertainty reduction resulting from the addition of environmental tracer concentration data. The analysis uses a synthetic heterogeneous aquifer and the calibration of a flow and transport model using the pilot point method. Results indicate a significant reduction in the uncertainty in permeability with the addition of environmental tracer data, relative to the use of hydraulic measurements alone. Anthropogenic tracers and their decay products, such as CFC11, 3H, and 3He, provide significant constraint oninput permeability values in the model. Tracer data for 39Ar provide even more complete information on the heterogeneity of permeability and variability in the flow system than the anthropogenic tracers, leading to greater parameter uncertainty reduction.

  14. Search for Supersymmetry Using Final States with One Lepton, Jets, and Missing Transverse Momentum with the ATLAS Detector in ?s=7??[square root of s=7] TeV pp Collisions

    E-Print Network [OSTI]

    Taylor, Frank E.

    This Letter presents the first search for supersymmetry in final states containing one isolated electron or muon, jets, and missing transverse momentum from ?s=7??[square root of s=7] TeV proton-proton collisions at the ...

  15. The effects of aging on proteasome activity, assembly, and abundance in C. elegans

    E-Print Network [OSTI]

    Joyce, Derek Christopher

    2012-01-01

    role of the proteasome in aging." Mech Ageing Dev 122(3):in Caenorhabditis elegans aging." Proc Natl Acad Sci U S Aproteotoxicity protection." Aging Cell 9(2): 126-134. Cook,

  16. The Health of Aging Lesbian, Gay and Bisexual Adults in California

    E-Print Network [OSTI]

    Wallace, Steven P.; Cochran, Susan D.; Durazo, Eva M.; Ford, Chandra L.

    2011-01-01

    March 2011 The Health of Aging Lesbian, Gay and Bisexualpopulation-level data on aging LGB adults (ages 50-70)care appears similar for aging LGB and heterosexual adults,

  17. AT BIOSPHERE 2 PREPARING FOR AN AGING WORLD

    E-Print Network [OSTI]

    and environmental challenges, it is critical that we look at these issues with innovative eyes. We believe delivery, information technology, biology of aging and policy/politics of aging. Via a series of Ted-talks and extensive discussions, we will explore these issues and identify opportunities to better care for

  18. Original article The influence of seed age on germinative response

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of seeds subjected to different factors involved in forest fires varied according to the age or the year. In nearly all the species, sensitivity to factors related to forest fires in- creased with age. P. pinaster. pinaster / P. radiata / E. globulus / germination / feu / âge de la semence 1. INTRODUCTION Forest fires

  19. http://jah.sagepub.com/ Journal of Aging and Health

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    variability (HRV) and HRV reactivity were derived from electrocardiograph (ECG) recordings taken at rest and during cognitive stress tasks. Age- trends in HRV and HRV reactivity were compared among 204 African for socioeconomic status (SES). Results: For HRV-reactivity, age-trends were steeper among African Americans

  20. Teaching Programming Languages in a Post-Linnaean Age

    E-Print Network [OSTI]

    Krishnamurthi, Shriram

    Teaching Programming Languages in a Post-Linnaean Age Shriram Krishnamurthi Brown University sk@cs.brown.edu Abstract Programming language "paradigms" are a moribund and tedious legacy of a bygone age. Modern split in programming language education, and describes a textbook that explores these matters

  1. Utah Commission on Aging Minutes for February 17, 2006

    E-Print Network [OSTI]

    Tipple, Brett

    Elder Care Services Scott Wright University of Utah College of Nursing Nels Holmgren DAAS Lynn Samsel Department of Health Alan Ormsby Department of Aging and Adult Services John Bennett Utah Quality Growth was done in conjunction with the State of Utah, Department of Human Services, Division of Aging and Adult

  2. Utah Commission on Aging Minutes for September 23, 2005 Meeting

    E-Print Network [OSTI]

    Tipple, Brett

    Sonnie Yudell Division of Adult and Aging Services Julie Rose KCPW Grant Howarth Community Nursing Services Brooke Adams Salt Lake Tribune Jilenne Gunther Division of Adult and Aging Services Kent Alderman Services Scott Wright University of Utah College of Nursing Lori Garf OPG Donna L. Russell DHS/EDO Angie

  3. Age and gender specific biokinetic model for strontium in humans

    SciTech Connect (OSTI)

    Shagina, N. B.; Tolstykh, E. I.; Degteva, M. O.; Anspaugh, L. R.; Napier, Bruce A.

    2015-03-01

    A biokinetic model for strontium in humans is necessary for quantification of internal doses due to strontium radioisotopes. The ICRP-recommended biokinetic model for strontium has limitation for use in a population study, because it is not gender specific and does not cover all age ranges. The extensive Techa River data set on 90Sr in humans (tens of thousands of measurements) is a unique source of data on long-term strontium retention for men and women of all ages at intake. These, as well as published data, were used for evaluation of age- and gender-specific parameters for a new compartment biokinetic model for strontium (Sr-AGe model). The Sr-AGe model has similar structure as the ICRP model for the alkaline earth elements. The following parameters were mainly reevaluated: gastro-intestinal absorption and parameters related to the processes of bone formation and resorption defining calcium and strontium transfers in skeletal compartments. The Sr-AGe model satisfactorily describes available data sets on strontium retention for different kinds of intake (dietary and intravenous) at different ages (0–80 years old) and demonstrates good agreement with data sets for different ethnic groups. The Sr-AGe model can be used for dose assessment in epidemiological studies of general population exposed to ingested strontium radioisotopes.

  4. International Trade in Natural Gas: Golden Age of LNG?

    E-Print Network [OSTI]

    International Trade in Natural Gas: Golden Age of LNG? Yichen Du and Sergey Paltsev Report No. 271;1 International Trade in Natural Gas: Golden Age of LNG? Yichen Du* and Sergey Paltsev* Abstract The introduction of liquefied natural gas (LNG) as an option for international trade has created a market for natural gas where

  5. Nuclear power plant Generic Aging Lessons Learned (GALL). Appendix B

    SciTech Connect (OSTI)

    Kasza, K.E.; Diercks, D.R.; Holland, J.W.; Choi, S.U.

    1996-12-01

    The purpose of this generic aging lessons learned (GALL) review is to provide a systematic review of plant aging information in order to assess materials and component aging issues related to continued operation and license renewal of operating reactors. Literature on mechanical, structural, and thermal-hydraulic components and systems reviewed consisted of 97 Nuclear Plant Aging Research (NPAR) reports, 23 NRC Generic Letters, 154 Information Notices, 29 Licensee Event Reports (LERs), 4 Bulletins, and 9 Nuclear Management and Resources Council Industry Reports (NUMARC IRs) and literature on electrical components and systems reviewed consisted of 66 NPAR reports, 8 NRC Generic Letters, 111 Information Notices, 53 LERs, 1 Bulletin, and 1 NUMARC IR. More than 550 documents were reviewed. The results of these reviews were systematized using a standardized GALL tabular format and standardized definitions of aging-related degradation mechanisms and effects. The tables are included in volume s 1 and 2 of this report. A computerized data base has also been developed for all review tables and can be used to expedite the search for desired information on structures, components, and relevant aging effects. A survey of the GALL tables reveals that all ongoing significant component aging issues are currently being addressed by the regulatory process. However, the aging of what are termed passive components has been highlighted for continued scrutiny. This report consists of Volume 2, which consists of the GALL literature review tables for the NUMARC Industry Reports reviewed for the report.

  6. Magnetorheology in an aging, yield stress matrix fluid

    E-Print Network [OSTI]

    et al. 2001), precision polishing (Kordonski and Golini 1999), and drilling fluids (Zitha 2004). MR1 Magnetorheology in an aging, yield stress matrix fluid Jason P. Rich,a Patrick S. Doyle,a Gareth) suspensions in an aging, yield stress matrix fluid composed of an aqueous dispersion of Laponite® clay. Using

  7. Embracing Statistical Challenges in the Information Technology Age

    E-Print Network [OSTI]

    Yu, Bin

    Embracing Statistical Challenges in the Information Technology Age Bin YU Department of Statistics.stat.berkeley.edu/users/binyu) This article examines the role of statistics in the age of information technology (IT). It begins by examining into computer technologies. 1. INTRODUCTION "Information technology (IT) is a broad subject concerned

  8. TRIUMAH 2012 RESULTS MALES BY AGE * distance measured in miles

    E-Print Network [OSTI]

    Thomas, David D.

    TRIUMAH 2012 RESULTS MALES BY AGE * distance measured in miles Last Name First Name Swim Bike Run+ Ferber Warren 0.364 7.390 2.300 10.054 50+ Luther Richard 0.500 6.900 2.420 9.820 Ages Other Strom Thad 0

  9. Extrapolating Oceanic Age Distributions: Lessons from the Pacific Region

    E-Print Network [OSTI]

    Extrapolating Oceanic Age Distributions: Lessons from the Pacific Region David B. Rowley Department plate reconstructions. An area equal in size to the Pacific Basin oceanic lithosphere must-mail: rowley@geosci.uchicago.edu) A B S T R A C T Extrapolation of the age distribution of oceanic lithosphere

  10. Aging of asymmetric dynamics on the random energy model

    E-Print Network [OSTI]

    Pierre Mathieu; Jean-Christophe Mourrat

    2013-03-20

    We show aging of Glauber-type dynamics on the random energy model, in the sense that we obtain the scaling limits of the clock process and of the age process. The latter encodes the Gibbs weight of the configuration occupied by the dynamics. Both limits are expressed in terms of stable subordinators.

  11. Aging management guideline for commercial nuclear power plants-pumps

    SciTech Connect (OSTI)

    Booker, S.; Katz, D.; Daavettila, N.; Lehnert, D. [MDC-Ogden Environmental and Energy Services, Southfield, MI (United States)

    1994-03-01

    This Aging Management Guideline (AMG) describes recommended methods for effective detection and mitigation of age-related degradation mechanisms in BWR and PWR commercial nuclear power plant pumps important to license renewal. The intent of this AMG is to assist plant maintenance and operations personnel in maximizing the safe, useful life of these components. It also supports the documentation of effective aging management programs required under the License Renewal Rule 10 CFR Part 54. This AMG is presented in a manner that allows personnel responsible for performance analysis and maintenance to compare their plant-specific aging mechanisms (expected or already experienced) and aging management program activities to the more generic results and recommendations presented herein.

  12. Seismic ruggedness of aged electrical components: Final report (Phase 2)

    SciTech Connect (OSTI)

    Gleason, J.F.

    1987-01-01

    Seismic tests on new and aged components have shown that, for many types of commonly used nuclear plant electrical components, deterioration due to aging does not significantly affect the ability of the components to function during and after a seismic event. This was demonstrated for capacitors, circuit breakers, contactors (motor starters), control station assemblies, electronic alarms, electronics, fuses, fuse blocks, inductors, meters, motors, pressure transmitters, power supplies, relays, RTDs, solenoid valves, terminal blocks, time delay relays, transformers and switches. A few switch types (limit, pressure and rotary) were observed to be more prone to contact chatter in an aged condition than in an unaged condition. However, the ability of these devices to switch during and after shaking was not affected by aging. These results can be referenced to eliminate the cost of aging prior to seismic qualification testing for many types of electrical components.

  13. The role of aging in resolving the ferrocyanide safety issue

    SciTech Connect (OSTI)

    Babad, H.; Meacham, J.E.; Simpson, B.C.; Cash, R.J.

    1993-08-01

    A chemical process called aging, in which stored ferrocyanide waste could be dissolved and dispersed among waste tanks, or destroyed by radiolysis and hydrolysis, has been proposed at the Hanford Site. This paper summarizes the results of applied research, characterization, and modeling activities on Hanford Site ferrocyanide waste material that support the existence of a chemical aging mechanism. Test results from waste simulants and actual waste tank materials are presented and compared with theoretical estimates. Chemical and energetic behavior of the materials are the key indicators of destruction or dispersion. Screening experiments on vendor-prepared sodium nickel ferrocyanide and the initial results from core sampling support the concept that aging of ferrocyanide is taking place in the waste tanks at the Hanford Site. This report defines the concept of waste aging and explains the role that aging could play in resolving the Hanford Site ferrocyanide safety issue.

  14. PIXE, Micro-PIXE and RBS Analysis of Thermal Aged Rubber Material : On The Additives Behaviour Versus Aging Time

    E-Print Network [OSTI]

    Boyer, Edmond

    PIXE, Micro-PIXE and RBS Analysis of Thermal Aged Rubber Material : On The Additives Behaviour Villeurbanne Cedex-France. ABSTRACT PIXE, micro-PIXE and RBS techniques were employed to monitor the behaviour of the rubber material itself. Keywords : PIXE, micro-PIXE, RBS, Rubber, Thermal Aging, Segregation, Additives

  15. Motivation-Learning and Aging 1 Toward a Three-Factor Motivation-Learning Framework in Normal Aging

    E-Print Network [OSTI]

    Maddox, W. Todd

    Motivation-Learning and Aging 1 Toward a Three-Factor Motivation-Learning Framework in Normal Aging A&M University To appear in T. Braver (Ed). Motivation and Cognitive Control, Taylor & Francis, UK Abstract The common belief that motivation involves simply "trying harder" is at best simplistic

  16. Enhanced Organic Precursor Removals Using "Aged" Filter Media Page 1 Enhanced Organic Precursor Removals Using "Aged" Filter Media

    E-Print Network [OSTI]

    OH. Fresh buffered water and influent solution were prepared prior to each filter challenge. C. CoagulatedEnhanced Organic Precursor Removals Using "Aged" Filter Media Page 1 Enhanced Organic Precursor Removals Using "Aged" Filter Media O b j e c t i v e s The main goals of this project was to evaluate

  17. Arsenic Removal Using AgedArsenic Removal Using Aged Rapid Sand Filter MediaRapid Sand Filter Media

    E-Print Network [OSTI]

    Arsenic Removal Using AgedArsenic Removal Using Aged Rapid Sand Filter MediaRapid Sand Filter Media byby C. Menard, D. Burt, M.R. CollinsC. Menard, D. Burt, M.R. Collins Water Treatment Technology Assistance CenterWater Treatment Technology Assistance Center Department of Civil Engineering

  18. Supplementary Methods Fifteen subjects between the ages of 23 and 33 (6 male, 9 female, mean age = 27) were

    E-Print Network [OSTI]

    Bucci, David J.

    Supplementary Methods Subjects Fifteen subjects between the ages of 23 and 33 (6 male, 9 female, mean age = 27) were recruited from the local Dartmouth community. Subjects reported no significant abnormal neurological history and all had normal or corrected-to-normal visual acuity. Subjects were paid

  19. Towards an accurate determination of the age of the Universe

    E-Print Network [OSTI]

    R. Jimenez

    1998-10-21

    In the past 40 years a considerable effort has been focused in determining the age of the Universe at zero redshift using several stellar clocks. In this review I will describe the best theoretical methods to determine the age of the oldest Galactic Globular Clusters (GC). I will also argue that a more accurate age determination may come from passively evolving high-redshift ellipticals. In particular, I will review two new methods to determine the age of GC. These two methods are more accurate than the classical isochrone fitting technique. The first method is based on the morphology of the horizontal branch and is independent of the distance modulus of the globular cluster. The second method uses a careful binning of the stellar luminosity function which determines simultaneously the distance and age of the GC. It is found that the oldest GCs have an age of $13.5 \\pm 2$ Gyr. The absolute minimum age for the oldest GCs is 10.5 Gyr and the maximum is 16.0 Gyr (with 99% confidence). Therefore, an Einstein-De Sitter Universe ($\\Omega=1$) is not totally ruled out if the Hubble constant is about $65 \\pm 10$ km s$^{-1}$ Mpc$^{-1}$. On the other hand, the newly discovered red elliptical 53W069 ($z=1.43$) provides an stronger constraint since its minimun age is 3.2 Gyr, thus ruling out an Einstein-De Sitter Universe unless the Hubble constant is $\\leq 45 \\pm 10$ km s$^{-1}$. Using 53W069 we find an age at $z=0$ of $13 \\pm 2$ Gyr, in excellent agreement with the GC determination.

  20. Constraining Cosmological Parameters Based on Relative Galaxy Ages

    E-Print Network [OSTI]

    Raul Jimenez; Abraham Loeb

    2001-06-07

    We propose to use relative galaxy ages as a means of constraining cosmological parameters. By measuring the age difference between two ensembles of old galaxies at somewhat different redshifts, one could determine the derivative of redshift with respect to cosmic time, dz/dt. At high redshifts, z=1-2, this measurement would constrain the equation-of-state of the dark energy, while at low redshifts, z< 0.2, it would determine the Hubble constant, H_0. The selected galaxies need to be passively-evolving on a time much longer than their age difference.

  1. Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl: A rare example of Ti(IV) in a square pyramidal oxygen coordination

    SciTech Connect (OSTI)

    Batuk, Maria; Batuk, Dmitry; Abakumov, Artem M.; Hadermann, Joke

    2014-07-01

    A new oxychloride Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl has been synthesized using the solid state method. Its crystal and magnetic structure was investigated in the 1.5–550 K temperature range using electron diffraction, high angle annular dark field scanning transmission electron microscopy, atomic resolution energy dispersive X-ray spectroscopy, neutron and X-ray powder diffraction. At room temperature Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl crystallizes in the P4/mmm space group with the unit cell parameters a=3.91803(3) Å and c=19.3345(2) Å. Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl is a new n=4 member of the oxychloride perovskite-based homologous series A{sub n+1}B{sub n}O{sub 3n?1}Cl. The structure is built of truncated Pb{sub 3}Fe{sub 3}TiO{sub 11} quadruple perovskite blocks separated by CsCl-type Pb{sub 2}Cl slabs. The perovskite blocks consist of two layers of (Fe,Ti)O{sub 6} octahedra sandwiched between two layers of (Fe,Ti)O{sub 5} square pyramids. The Ti{sup 4+} cations are preferentially located in the octahedral layers, however, the presence of a noticeable amount of Ti{sup 4+} in a five-fold coordination environment has been undoubtedly proven using neutron powder diffraction and atomic resolution compositional mapping. Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl is antiferromagnetically ordered below 450(10) K. The ordered Fe magnetic moments at 1.5 K are 4.06(4) ?{sub B} and 3.86(5) ?{sub B} on the octahedral and square-pyramidal sites, respectively. - Highlights: • Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl has been synthesized using the solid state method. • The structure has been refined using neutron powder diffraction data at 1.5–550 K. • It is a new n=4 member of the perovskite-related homologous series A{sub n+1}B{sub n}O{sub 3n?1}Cl. • Ti{sup 4+} cations have both octahedral and square-pyramidal coordination environment. • Pb{sub 5}Fe{sub 3}TiO{sub 11}Cl is antiferromagnetically ordered below T{sub N}?450 K.

  2. Uncertainty in least-squares fits to the thermal noise spectra of nanomechanical resonators with applications to the atomic force microscope

    SciTech Connect (OSTI)

    Sader, John E.; Yousefi, Morteza; Friend, James R.; Melbourne Centre for Nanofabrication, Clayton, Victoria 3800

    2014-02-15

    Thermal noise spectra of nanomechanical resonators are used widely to characterize their physical properties. These spectra typically exhibit a Lorentzian response, with additional white noise due to extraneous processes. Least-squares fits of these measurements enable extraction of key parameters of the resonator, including its resonant frequency, quality factor, and stiffness. Here, we present general formulas for the uncertainties in these fit parameters due to sampling noise inherent in all thermal noise spectra. Good agreement with Monte Carlo simulation of synthetic data and measurements of an Atomic Force Microscope (AFM) cantilever is demonstrated. These formulas enable robust interpretation of thermal noise spectra measurements commonly performed in the AFM and adaptive control of fitting procedures with specified tolerances.

  3. The needle in the hundred square degree haystack: The hunt for binary neutron star mergers with LIGO and Palomar Transient Factory

    E-Print Network [OSTI]

    Singer, Leo P

    2015-01-01

    The Advanced LIGO and Virgo experiments are poised to detect gravitational waves (GWs) directly for the first time this decade. The ultimate prize will be joint observation of a compact binary merger in both gravitational and electromagnetic channels. However, GW sky locations that are uncertain by hundreds of square degrees will pose a challenge. I describe a real-time detection pipeline and a rapid Bayesian parameter estimation code that will make it possible to search promptly for optical counterparts in Advanced LIGO. Having analyzed a comprehensive population of simulated GW sources, we describe the sky localization accuracy that the GW detector network will achieve as each detector comes online and progresses toward design sensitivity. Next, in preparation for the optical search with the intermediate Palomar Transient Factory (iPTF), we have developed a unique capability to detect optical afterglows of gamma-ray bursts (GRBs) detected by the Fermi Gamma-ray Burst Monitor (GBM). Its comparable error regi...

  4. Constraints on the range lambda of Yukawa-like modifications to the Newtonian inverse-square law of gravitation from Solar System planetary motions

    E-Print Network [OSTI]

    Lorenzo Iorio

    2007-09-25

    In this paper we use the latest corrections to the Newton-Einstein secular perihelion rates of some planets of the Solar System, phenomenologically estimated with the EPM2004 ephemerides by the Russian astronomer E.V. Pitjeva, to put severe constraints on the range parameter lambda characterizing the Yukawa-like modifications of the Newtonian inverse-square law of gravitation. It turns out that the range cannot exceed about one tenth of an Astronomical Unit. We assumed neither equivalence principle violating effects nor spatial variations of $\\alpha$ and $\\lambda$. This finding may have important consequences on all the modified theories of gravity involving Yukawa-type terms with range parameters much larger than the Solar System size. However, caution is advised since we, currently have at our disposal only the periehlion extra-rates estimated by Pitjeva: if and when other groups will estimate their own corrections to the secular motion of perihelia, more robust and firm tests may be conducted.

  5. Finite-Volume Energy Spectrum, Fractionalized Strings, and Low-Energy Effective Field Theory for the Quantum Dimer Model on the Square Lattice

    E-Print Network [OSTI]

    Banerjee, D; Hofmann, C P; Jiang, F -J; Widmer, P; Wiese, U -J

    2015-01-01

    We present detailed analytic calculations of finite-volume energy spectra, mean field theory, as well as a systematic low-energy effective field theory for the square lattice quantum dimer model. The analytic considerations explain why a string connecting two external static charges in the confining columnar phase fractionalizes into eight distinct strands with electric flux $\\frac{1}{4}$. An emergent approximate spontaneously broken $SO(2)$ symmetry gives rise to a pseudo-Goldstone boson. Remarkably, this soft phonon-like excitation, which is massless at the Rokhsar-Kivelson (RK) point, exists far beyond this point. The Goldstone physics is captured by a systematic low-energy effective field theory. We determine its low-energy parameters by matching the analytic effective field theory with exact diagonalization results and Monte Carlo data. This confirms that the model exists in the columnar (and not in a plaquette or mixed) phase all the way to the RK point.

  6. Stability of critical bubble in stretched fluid of square-gradient density-functional model with triple-parabolic free energy

    E-Print Network [OSTI]

    Masao Iwamatsu; Yutaka Okabe

    2010-06-11

    The square-gradient density-functional model with triple-parabolic free energy, that was used previously to study the homogeneous bubble nucleation [J. Chem. Phys. 129, 104508 (2008)], is used to study the stability of the critical bubble nucleated within the bulk under-saturated stretched fluid. The stability of the bubble is studied by solving the Schr\\"odinger equation for the fluctuation. The negative eigenvalue corresponds to the unstable growing mode of the fluctuation. Our results show that there is only one negative eigenvalue whose eigenfunction represents the fluctuation that corresponds to the isotropically growing or shrinking nucleus. In particular, this negative eigenvalue survives up to the spinodal point. Therefore the critical bubble is not fractal or ramified near the spinodal.

  7. Reliability Modeling and Evaluation in Aging Power Systems 

    E-Print Network [OSTI]

    Kim, Hag-Kwen

    2010-01-14

    Carlo simulation is introduced. Power Law Process is modeled as the failure rate function of aging components. Power system reliability analysis can be made at the generation capacity level where transmission constraints may be included. The simulation...

  8. The Golden Age of Software Architecture: A Comprehensive Survey

    E-Print Network [OSTI]

    , technology maturation, history of software engineering #12;The Golden Age of Software Architecture results have moved into practice. Keywords: Software architecture, technology maturation, history of a technology maturation model, matching significant accomplishments in software architecture to the stages

  9. Space-Age Ceramics Get Their Toughest Test

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    operational temperatures projected for hypersonic jet and next-generation gas-turbine engines, but real-time analysis of the mechanical properties of these space-age materials at...

  10. System to estimate ages and redshifts for radio galaxies

    E-Print Network [OSTI]

    O. V. Verkhodanov; A. I. Kopylov; N. V. Verkhodanova; O. P. Zhelenkova; V. N. Chernenkov; Yu. N. Parijskij; N. S. Soboleva; A. V. Temirova

    2001-12-06

    The system allowing a user to operate with simulated curves of spectral energy distribution (SED) and to estimate ages and redshifts by photometric data at server {\\bf sed.sao.ru} is described.

  11. Maximum Entry and Mandatory Separation Ages for Certain Security Employees

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-10-11

    The Policy in response to government-wide Office of Personnel Management regulations regarding establishment of mandatory retirement ages for employees in certain security related positions. Superseded by DOE P 310.1 Admin Chg 1, 12-1-11.

  12. Template Aging: A Study of the NIST Biometric Score Set

    E-Print Network [OSTI]

    Schuckers, Michael E.

    to Lockheed Martin 1 #12;Outline 1. Introduction to Template Aging 2. Biometric Score Set Release 1 3 for Identification Technology Research cUS Department of Defense's Biometric Fusion Center through a subcontract

  13. Service settings for an aging society : a community ordering principle

    E-Print Network [OSTI]

    Nelson, Gaius Grant

    1987-01-01

    Current facility models used in the design of housing and service settings for older people encourage the development of urban, large scale, age-segregated institutional environments. Research has either unwittingly or ...

  14. The Effects of Ageing on Memory and Thinking 

    E-Print Network [OSTI]

    Ford, Amanda

    2007-01-01

    The main aim of the present study is to examine the effects of ageing on memory and thinking by examining verbal fluency performance. More specifically looking at the differences between older and younger people, to ...

  15. r Journalof Geology LATE ARCHEAN ZIRCON AGES 419

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    sows t at t e popu a Ion 0 zIrcons in the banded granulite Ch Zr I, which record ages 238UfO6Pb at 2622

  16. Users, technology and space in libraries in the digital age

    E-Print Network [OSTI]

    G-Chandorkar, Tripti (Gore-Chandorkar)

    2005-01-01

    This thesis is a user research study of emerging issues in the use of libraries as public spaces and as information repositories in the digital age. Till recently strong physicality was attached to the library with the ...

  17. Setting the stellar evolution clock for intermediate age populations

    E-Print Network [OSTI]

    R. Jimenez

    1999-06-04

    In this invited talk I show how the reddest and rarest galaxies at high redshift ($z \\simeq 1.5$) can be used to set the stellar evolution clock. I argue that one can confidently compute the collapse redshift of these objects. This yields to a high collapse redshift ($z>6$) and therefore their age is well constrained (in all cosmologies) between 3 and 4 Gyr. I also show that this is, indeed, the age derived using a variety of synthetic stellar population models when proper statistical tools are used to analyse their observed spectral energy distribution. This allows me to conclude that all stellar population models yield to the same consistent age for these galaxies, i.e. about 3.5 Gyr and that the stellar clock is properly set. Low ages are therefore excluded with high confidence.

  18. Hipparcos and the Age of the Galactic Disc

    E-Print Network [OSTI]

    Raul Jimenez; Chris Flynn

    1997-09-22

    We have used the Hipparcos satellite colour magnitude diagram to determine the age of the Galactic disc. We first measure the metallicities of Hipparcos giants using DDO photometry (H{\\o}g & Flynn 1997). With accurate metallicities and distances we compute the minimum age of the Galactic disc as $11\\pm1$ Gyr using the colour of the reddest clump stars as a function of metallicity. In conjunction with the new ages derived for Globular Clusters using the same method (Jimenez et al 1996) we show that any delay between the formation of the halo and the disc was only 2-3 Gyr. Since disc galaxies may have been detected to redshifts as high as $z=3.15$ (Lu, Sargent and Barlow 1997) an age for our own Galactic disc of 11 Gyr favours open or non-zero $\\Lambda$ cosmological models. We show that a Reimers mass-loss law is sufficient to explain the morphology of the red clump.

  19. Aging effects of environmental factors on rolled erosion control products 

    E-Print Network [OSTI]

    Khanna, Sumee

    2007-04-25

    This thesis presents a study made on erosion control blankets with respect to their aging and longevity. Erosion control blankets have been relied upon increasingly in recent times replacing the old and traditional methods for protecting areas from...

  20. Enzyme Structure Provides Insights into Cancer and Aging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Enzyme Structure Provides Insights into Cancer and Aging Print XPD helicase is an enzyme that unwinds the DNA double helix; it is one component of an essential repair mechanism...

  1. Longitudinal study of ASR performance on ageing voices 

    E-Print Network [OSTI]

    Vipperla, Ravichander; Renals, Steve; Frankel, Joe

    2008-01-01

    This paper presents the results of a longitudinal study of ASR performance on ageing voices. Experiments were conducted on the audio recordings of the proceedings of the Supreme Court Of The United States (SCOTUS). Results ...

  2. Neuroimaging of Discourse Processing in Aging and Alzheimer's Disease

    E-Print Network [OSTI]

    Wang, Clarice

    2011-12-31

    Detection of very early stages of Alzheimer's Disease (AD) has been an area of difficulty for researchers due to confounds with age. Prose recall has been suggested as a diagnostically sensitive test of episodic memory declines in AD; however...

  3. Transmission Dynamics of an Influenza Model with Age of Infection ...

    E-Print Network [OSTI]

    2010-07-20

    J Dyn Diff Equat. DOI 10.1007/s10884-010-9178-x. Transmission Dynamics of an Influenza Model with Age of Infection and Antiviral Treatment. Zhipeng Qiu ...

  4. INCREASED STRENGTHENING OF AUSTENITIC ALLOYS THROUGH DUAL AGING

    E-Print Network [OSTI]

    Ma, Annie

    2011-01-01

    Fe-Ni-Ti~Al aging heat treatments on hardened by austeniticcold working and thermal heat treatment. These tech- niques,the effect of solution heat treatment, single and du- plex

  5. Schistosomiasis models with density dependence and age of ...

    E-Print Network [OSTI]

    2002-04-08

    Hopefully, a simple model can be thoroughly analyzed and .... time t, and r?s? denote the rate at which infected snails of infection age s release cercariae. Then

  6. Tensile-property characterization of thermally aged cast stainless steels

    SciTech Connect (OSTI)

    Michaud, W.F.; Toben, P.T.; Soppet, W.K.; Chopra, O.K.

    1994-02-01

    The effect of thermal aging on tensile properties of cast stainless steels during service in light water reactors has been evaluated. Tensile data for several experimental and commercial heats of cast stainless steels are presented. Thermal aging increases the tensile strength of these steels. The high-C Mo-bearing CF-8M steels are more susceptible to thermal aging than the Mo-free CF-3 or CF-8 steels. A procedure and correlations are presented for predicting the change in tensile flow and yield stresses and engineering stress-vs.-strain curve of cast stainless steel as a function of time and temperature of service. The tensile properties of aged cast stainless steel are estimated from known material information, i.e., chemical composition and the initial tensile strength of the steel. The correlations described in this report may be used for assessing thermal embrittlement of cast stainless steel components.

  7. Space-Age Ceramics Get Their Toughest Test

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ultrahigh operational temperatures projected for hypersonic jet and next-generation gas-turbine engines, but real-time analysis of the mechanical properties of these space-age...

  8. Accelerated Aging Effects on Kevlar KM2 Fiber Survivability 

    E-Print Network [OSTI]

    Yang, Tony

    2013-04-12

    good replacement for single filament tests and estimation techniques can determine the bundle Weibull parameters. Furthermore, the survival function for treated fibers is better if the bundle is lubricated. The accelerated aging experiments show...

  9. Multisensory integration of social information in adult aging 

    E-Print Network [OSTI]

    Hunter, Edyta Monika

    2011-01-01

    Efficient navigation of our social world depends on the generation, interpretation and combination of social signals within different sensory systems. However, the influence of adult aging on cross-modal integration of emotional stimuli remains...

  10. Fact #558: February 16, 2009 Transit Vehicle Age and Cost

    Broader source: Energy.gov [DOE]

    Heavy rail cars have the greatest longevity of the transit vehicles listed below with an average vehicle age of more than 22 years. However, in terms of cost for purchasing a new rail car, heavy...

  11. Understanding the genetics of aging: a canine model 

    E-Print Network [OSTI]

    Canterberry, Sarah Christine

    2007-04-25

    As life expectancy in the United States increases each year, the percentage of the population that is comprised of aged individuals rises also. Researchers expect the largest increase in population to occur in the segment ...

  12. UBVI photometry of the intermediate age open cluster NGC 6939

    E-Print Network [OSTI]

    Gloria Andreuzzi; Angela Bragaglia; Monica Tosi; Gianni Marconi

    2003-11-13

    We present CCD UBVI photometry of the nearby, intermediate age open cluster NGC 6939. Using the synthetic Colour - Magnitude Diagrams technique we estimate the following parameters: age between 1.3 and 1.0 Gyr (depending on whether or not overshooting is considered), reddening 0.34

  13. The Age of the Galaxy from Thorium Cosmochronometry

    E-Print Network [OSTI]

    C. Sneden; J. J. Cowan

    2000-08-11

    The long-lived radioactive element thorium can potentially provide a simple and direct clock to determine the age of our Galaxy. Spectroscopic investigations of thorium in metal-poor stars have yielded some promising initial results. We discuss the major observational and theoretical limitations in thorium cosmochronometry, and point out the ways in which the implied Galactic ages from thorium abundances can be made more accurate.

  14. Determination of age in forensic dentistry from cemental incremental lines 

    E-Print Network [OSTI]

    Sousa, Eliane Marques Duarte de

    1987-01-01

    ) John E. Martin (Member) H. Del Var Petersen (Member) Gerald R. Bratton (Head of Department) December lg87 ABSTNACT Determination of Age in Forensic Dentistry from Cemental Incremental Lines. (December 1987) Eliane Marques Duarte de Sousa, D. D...DETERMINATION OF AGE IN FORENSIC DENTISTRY FROM CEMENTAL INCREMENTAL LINES Thes' s by ELIANE MARJUES DLARTE DF SOUSA Submitted to the Graduate College of Texas A?M Univer ity ' n r. srt' al f"lf' llment of the requirements for the degree...

  15. Effects of working arm heights and age on blood pressure 

    E-Print Network [OSTI]

    Cahalane, Patrick Takeo

    1985-01-01

    EFFECTS OF MORKING ARM HEIGHTS AND AGE ON BLOOD PRESSURE A Thesis PATRICK TAKEO CAHALANE Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1985 Major... Subject: Industrial Engineering EFFECTS OF WORKING ARM HEIGHTS AND AGE ON BLOOD PRESSURE A Thesis by PATRICK TAKEO CAHALANE Approved as to stvle and content by: Dr. R. Dale Huchi son (Chairman of Committee) Dr. Rodger J. Koppa (Member) Dr. R...

  16. Retail Shelf-life Characteristics of Dry-aged Beef 

    E-Print Network [OSTI]

    Ulbrich, Carson

    2010-07-14

    SCHOLAR A Senior Scholars Thesis by CARSON JOSEPH ULBRICH RETAIL SHELF-LIFE CHARACTERISTICS OF DRY-AGED BEEF Approved by: Research Advisors: Jeffrey W. Savell Davey B. Griffin Associate Dean for Undergraduate Research: Robert C. Webb... ULBRICH iii ABSTRACT Retail Shelf-Life Characteristics of Dry-Aged Beef. (April 2010) Carson Joseph Ulbrich Department of Animal Science Texas A&M University Research Advisors: Drs. Jeffrey W. Savell and Davey B. Griffin Department...

  17. Modelling aging effects on a thermal cycling absorption process column

    SciTech Connect (OSTI)

    Laquerbe, C.; Contreras, S.; Demoment, J.

    2008-07-15

    Palladium coated on alumina is used in hydrogen separation systems operated at CEA/Valduc, and more particularly in Thermal Cycling Absorption Process columns. With such materials, tritium decay is known to induce aging effects which have direct side effects on hydrogen isotopes absorption isotherms. Furthermore in a TCAP column, aging occurs in an heterogeneous way. The possible impacts of these intrinsic material evolutions on the separation performances are investigated here through a numerical approach. (authors)

  18. The ACS Survey of Galactic Globular Clusters. VII. Relative Ages

    E-Print Network [OSTI]

    Marin-Franch, Antonio; Piotto, Giampaolo; Rosenberg, Alfred; Chaboyer, Brian; Sarajedini, Ata; Siegel, Michael; Anderson, Jay; Bedin, Luigi R; Dotter, Aaron; Hempel, Maren; King, Ivan; Majewski, Steven; Milone, Antonino P; Paust, Nathaniel; Reid, I Neill

    2008-01-01

    The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on observations from this program, we have measured precise relative ages for a sample of 64 Galactic globular clusters by comparing the relative position of the clusters' main sequence turn offs, using main-sequence fitting to cross-compare clusters within the sample. This method provides relative ages to a formal precision of 2-7%. We demonstrate that the calculated relative ages are independent of the choice of theoretical model. We find that the Galactic globular cluster sample can be divided into two groups -- a population of old clusters with an age dispersion of ~5% and no age-metallicity relation, and a group of younger clusters with an age-metallicity relation similar to that of the globular clusters associated with the Sagittarius dwarf galaxy. These results are consistent with the Milky Way halo having formed in two phases ...

  19. Evidence of aging effects on certain safety-related components

    SciTech Connect (OSTI)

    Magleby, H.L.; Atwood, C.L.; MacDonald, P.E.; Edson, J.L.; Bramwell, D.L.

    1996-01-01

    In response to interest shown by the Nuclear Energy Agency (NEA), Principal Working Group I (PWG- 1) of the Committee on the Safety of Nuclear Installations (CSNI) conducted a generic study on the effects of aging of active components in nuclear power plants. (This focus on active components is consistent with PWG-l`s mandate; passive components are primarily within the mandate of PWG-3.) Representatives from France, Sweden, Finland, Japan, the United States, and the United Kingdom participated in the study by submitting reports documenting aging studies performed in their countries. This report consists of summaries of those reports, along with a comparison of the various statistical analysis methods used in the studies. The studies indicate that with some exceptions, active components generally do not present a significant aging problem in nuclear power plants. Design criteria and effective preventative maintenance programs, including timely replacement of components, are effective in mitigating potential aging problems. However, aging studies (such as qualitative and statistical analyses of failure modes and maintenance data) are an important part of efforts to identify and solve potential aging problems. Solving these problems typically includes such strategies as replacing suspect components with improved components, and implementing improved maintenance programs.

  20. Bronze metallurgy in Iron Age central Europe : a metallurgical study of Early Iron Age bronzes from Sti?na, Slovenia.

    E-Print Network [OSTI]

    Cooney, Elizabeth Myers

    2007-01-01

    The Early Iron Age (750-450 BCE) marks a time in the European Alpine Region in which cultural ideologies surrounding bronze objects and bronze production were changing. Iron was becoming the preferred material from which ...