Sample records for run speeds shows

  1. Between-sex Variation in Running Speed and a Potential Cost of Leg Autotomy in the

    E-Print Network [OSTI]

    Brown, Christopher A.

    Between-sex Variation in Running Speed and a Potential Cost of Leg Autotomy in the Wolf Spider of losing a leg is a reduction in burst running speed, which may affect prey capture and predator avoidance differed in either sprint speed or the potential cost of leg loss. Autotomy was fairly common in the field

  2. Dynamic stability of running: The effects of speed and leg amputations on the maximal Lyapunov exponent

    SciTech Connect (OSTI)

    Look, Nicole [Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado 80309 (United States)] [Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado 80309 (United States); Arellano, Christopher J.; Grabowski, Alena M.; Kram, Rodger [Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado 80309 (United States)] [Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado 80309 (United States); McDermott, William J. [The Orthopedic Specialty Hospital, Murray, Utah 84107 (United States)] [The Orthopedic Specialty Hospital, Murray, Utah 84107 (United States); Bradley, Elizabeth [Department of Computer Science, University of Colorado Boulder, Boulder, Colorado 80309, USA and Santa Fe Institute, Santa Fe, New Mexico 87501 (United States)] [Department of Computer Science, University of Colorado Boulder, Boulder, Colorado 80309, USA and Santa Fe Institute, Santa Fe, New Mexico 87501 (United States)

    2013-12-15T23:59:59.000Z

    In this paper, we study dynamic stability during running, focusing on the effects of speed, and the use of a leg prosthesis. We compute and compare the maximal Lyapunov exponents of kinematic time-series data from subjects with and without unilateral transtibial amputations running at a wide range of speeds. We find that the dynamics of the affected leg with the running-specific prosthesis are less stable than the dynamics of the unaffected leg and also less stable than the biological legs of the non-amputee runners. Surprisingly, we find that the center-of-mass dynamics of runners with two intact biological legs are slightly less stable than those of runners with amputations. Our results suggest that while leg asymmetries may be associated with instability, runners may compensate for this effect by increased control of their center-of-mass dynamics.

  3. Walking, running, and resting under time, distance, and average speed constraints: Optimality of walk-run-rest mixtures

    E-Print Network [OSTI]

    Srinivasan, Manoj

    in a more ecological (non-treadmill) setting. We asked subjects to travel a given distance overground to go from your house to the bus stop and have very little time to do so. You would likely run the whole

  4. Muscle mechanical work and elastic energy utilization during walking and running near the preferred gait transition speed

    E-Print Network [OSTI]

    Muscle mechanical work and elastic energy utilization during walking and running near the preferred gait transition speed Kotaro Sasaki, Richard R. Neptune * Department of Mechanical Engineering; received in revised form 18 May 2005; accepted 23 May 2005 Abstract Mechanical and metabolic energy

  5. Running faster together: huge speed up of thermal ratchets due to hydrodynamic coupling

    E-Print Network [OSTI]

    Paolo Malgaretti; Ignacio Pagonabarraga; Daan Frenkel

    2012-09-19T23:59:59.000Z

    We present simulations that reveal a surprisingly large effect of hydrodynamic coupling on the speed of thermal ratchet motors. The model that we use considers particles performing thermal ratchet motion in a hydrodynamic solvent. Using particle-based, mesoscopic simulations that maintain local momentum conservation, we analyze quantitatively how the coupling to the surrounding fluid affects ratchet motion. We find that coupling can increase the mean velocity of the moving particles by almost two orders of magnitude, precisely because ratchet motion has both a diffusive and a deterministic component. The resulting coupling also leads to the formation of aggregates at longer times. The correlated motion that we describe increases the efficiency of motor-delivered cargo transport and we speculate that the mechanism that we have uncovered may play a key role in speeding up molecular motor-driven intracellular transport.

  6. The Effects of Stressors on Voluntary Running

    E-Print Network [OSTI]

    Dlugosz, Elizabeth Maureen

    2012-01-01T23:59:59.000Z

    Energy cost of walking and running gaits and their aerobicEnergy cost of wheel running in house mice: implications forration predict maximal running speed in cursorial mammals?

  7. Use of self-organizing maps for exploring coordination variability in the transition between walking and running

    E-Print Network [OSTI]

    Bartlett, Roger M; Lamb, Peter F; O’Donovan, David; Kennedy, Gavin

    2014-01-01T23:59:59.000Z

    structures of walking and running. Human Movement Science,patterns of walking and running at similar speed and stridebetween walking and running when gradually changing speed.

  8. Running Inflation

    E-Print Network [OSTI]

    Jae-weon Lee; In-guy Koh

    1997-04-30T23:59:59.000Z

    A first order inflation model where a gauge coupling constant runs as the universe inflates is investigated. This model can solve the graceful-exit problem within Einstein gravity by varying the bubble formation rate. The sufficient expansion condition gives group theoretical constraints on the inflaton field, while the appropriate density perturbation requires an additional scalar field or cosmic strings.

  9. Renewable variable speed hybrid system 

    E-Print Network [OSTI]

    Stott, Paul Anthony

    2010-01-01T23:59:59.000Z

    generator island grids, these generators will be running at a fraction of maximum output for most of the time. A new variable speed diesel generator allows for a reduction in fuel consumption at part load compared to constant speed operation. Combining...

  10. Running jobs on Euclid

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

    Running jobs Running jobs Overview and Basic Description Euclid is a single node system with 48 processors. It supports both multiprocessing (MPI) and multithreading programming...

  11. Running Boundary Condition

    E-Print Network [OSTI]

    Satoshi Ohya; Makoto Sakamoto; Motoi Tachibana

    2013-01-28T23:59:59.000Z

    In this paper we argue that boundary condition may run with energy scale. As an illustrative example, we consider one-dimensional quantum mechanics for a spinless particle that freely propagates in the bulk yet interacts only at the origin. In this setting we find the renormalization group flow of U(2) family of boundary conditions exactly. We show that the well-known scale-independent subfamily of boundary conditions are realized as fixed points. We also discuss the duality between two distinct boundary conditions from the renormalization group point of view. Generalizations to conformal mechanics and quantum graph are also discussed.

  12. On the running coupling in the JIMWLK equation

    E-Print Network [OSTI]

    T. Lappi; H. Mäntysaari

    2012-12-19T23:59:59.000Z

    We propose a new method to implement the running coupling constant in the JIMWLK equation, imposing the scale dependence on the correlation function of the random noise in the Langevin formulation. We interpret this scale choice as the transverse momentum of the emitted gluon in one step of the evolution and show that it is related to the "Balitsky" prescription for the BK equation. This slows down the evolution speed of a practical solution of the JIMWLK equation, bringing it closer to the x-dependence inferred from fits to HERA data. We further study our proposal by a numerical comparison of the BK and JIMWLK equations.

  13. Oil shale project run summary small retort run S-7

    SciTech Connect (OSTI)

    Ackerman, F.J.; Sandholtz, W.A.; Miller, W.C.; Casamajor, A.B.

    1981-12-11T23:59:59.000Z

    Retort Run S-7 was a combustion run in the small retort conducted on October 10-11, 1975. Nitrogen was used to dilute the inlet air to 7.5% oxygen. Gas analysis shows that oil was not burned, but the oil yield was only 78%. If the oil yield was actually 90% and 1.3 kg of oil was lost up the stack, the mass balance would show a small improvement, 1.2 kg (approx. 0.5%) unaccounted for, the energy balance would have only 1% energy unaccounted for, and the carbon balance would be improved from 10.5% to 1.4% loss. (DLC)

  14. Controlling proton source speeds catalyst | EMSL

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

    speeds catalyst Controlling proton source speeds catalyst Released: April 29, 2013 Nickel-based catalyst three times faster with adjustments to key acid Research showing that...

  15. Running surface couplings

    E-Print Network [OSTI]

    S. D. Odintsov; A. Wipf

    1995-06-19T23:59:59.000Z

    We discuss the renormalization group improved effective action and running surface couplings in curved spacetime with boundary. Using scalar self-interacting theory as an example, we study the influence of the boundary effects to effective equations of motion in spherical cap and the relevance of surface running couplings to quantum cosmology and symmetry breaking phenomenon. Running surface couplings in the asymptotically free SU(2) gauge theory are found.

  16. The role of the tail in stability and maneuverability during running, climbing, mid-air orientation and gliding in both animals and robots.

    E-Print Network [OSTI]

    Jusufi, Ardian

    2013-01-01T23:59:59.000Z

    2006). Dynamics of geckos running vertically. J Exp Biolof the tail in attaining high running speed in CnemidophorusDaniels, C.B. (1983). Running: an escape strategy enhanced

  17. Running with Java

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning on CarverRunning

  18. Running Large Scale Jobs

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions forRunning

  19. Running on Carver

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick InstructionsRunning on

  20. Running on Carver

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick InstructionsRunning

  1. Running on Carver

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning on Carver

  2. Running on Carver

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning on Carver

  3. Improved Algorithms Speed It Up for Codes

    SciTech Connect (OSTI)

    Hazi, A

    2005-09-20T23:59:59.000Z

    Huge computers, huge codes, complex problems to solve. The longer it takes to run a code, the more it costs. One way to speed things up and save time and money is through hardware improvements--faster processors, different system designs, bigger computers. But another side of supercomputing can reap savings in time and speed: software improvements to make codes--particularly the mathematical algorithms that form them--run faster and more efficiently. Speed up math? Is that really possible? According to Livermore physicist Eugene Brooks, the answer is a resounding yes. ''Sure, you get great speed-ups by improving hardware,'' says Brooks, the deputy leader for Computational Physics in N Division, which is part of Livermore's Physics and Advanced Technologies (PAT) Directorate. ''But the real bonus comes on the software side, where improvements in software can lead to orders of magnitude improvement in run times.'' Brooks knows whereof he speaks. Working with Laboratory physicist Abraham Szoeke and others, he has been instrumental in devising ways to shrink the running time of what has, historically, been a tough computational nut to crack: radiation transport codes based on the statistical or Monte Carlo method of calculation. And Brooks is not the only one. Others around the Laboratory, including physicists Andrew Williamson, Randolph Hood, and Jeff Grossman, have come up with innovative ways to speed up Monte Carlo calculations using pure mathematics.

  4. Limiting velocities as running parameters and superluminal neutrinos

    E-Print Network [OSTI]

    Mohamed M. Anber; John F. Donoghue

    2011-10-01T23:59:59.000Z

    In the context of theories where particles can have different limiting velocities, we review the running of particle speeds towards a common limiting velocity at low energy. Motivated by the recent OPERA experimental results, we describe a model where the neutrinos would deviate from the common velocity by more than do other particles in the theory, because their running is slower due to weaker interactions.

  5. Running Jobs on Edison

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions for Hopper

  6. Running Jobs on Franklin

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions for

  7. Running Jobs on Hopper

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions for Queues

  8. Running jobs on Euclid

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions

  9. Running on Carver

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick

  10. Fall Run | Jefferson Lab

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederalFYRANDOMFailure Modes and Causes5Fall Run

  11. PDU Run 10

    SciTech Connect (OSTI)

    Not Available

    1981-09-01T23:59:59.000Z

    PDU Run 10, a 46-day H-Coal syncrude mode operation using Wyodak coal, successfully met all targeted objectives, and was the longest PDU operation to date in this program. Targeted coal conversion of 90 W % was exceeded with a C/sub 4/-975/sup 0/F distillate yield of 43 to 48 W %. Amocat 1A catalyst was qualified for Pilot Plant operation based on improved operation and superior performance. PDU 10 achieved improved yields and lower hydrogen consumption compared to PDU 6, a similar operation. High hydroclone efficiency and high solids content in the vacuum still were maintained throughout the run. Steady operations at lower oil/solids ratios were demonstrated. Microautoclave testing was introduced as an operational aid. Four additional studies were successfully completed during PDU 10. These included a catalyst tracer study in conjunction with Sandia Laboratories; tests on letdown valve trims for Battelle; a fluid dynamics study with Amoco; and special high-pressure liquid sampling.

  12. Towards Explaining the Speed of k-Means Bodo Manthey

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    Towards Explaining the Speed of k-Means Bodo Manthey University of Twente, Department of Applied Mathematics P. O. Box 217, 7500 AE Enschede, The Netherlands b.manthey@utwente.nl The k-means method exponential worst-case running-time. To explain the speed of the k-means method, a smoothed analysis has been

  13. Dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States); Handman, D. [Flowind Corp., San Rafael, CA (United States)] [Flowind Corp., San Rafael, CA (United States)

    1996-10-01T23:59:59.000Z

    Induction generator has been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using a dual output drive train to drive two induction generators with two different rated speeds. With single-speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. Operation at maximum Cp can occur only at a single wind speed. However, if the wind speed.varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative which captures more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine is investigated. Annual energy production is compared between single-speed and dual-speed operation. One type of control algorithm for dual-speed operation is proposed. Some results from a dynamic simulation will be presented to show how the control algorithm works as the wind turbine is exposed to varying wind speeds.

  14. Effect of shrink fits on threshold speeds of rotordynamic instability

    E-Print Network [OSTI]

    Mir, MD. Mofazzal Hossain

    2001-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 CHAPTER IV TEST APPARATUS . . . . 13 CHAPTER V RESULTS AND DISCUSSION . . . 17 17 30 42 42 47 5. 1 Rap Test. . 5. 2 Running Test 5. 3 Modeling and the Prcdiction of Threshold Speed of Instability.... . . . . . . . . . . . , . . . . . . . . . . . 5. 3. 1 Matching the Base Case. 5. 3. 2 Gunter's Prediction Using C, q 5. 3. 3 Modeling and Prediction of the Threshold Speed Using the XLTRC Code. . . . 51 5. 4 Prediction of the Onset Speed of Instability for a Tight Inteiference Fit...

  15. Backward running or absence of running from Creutz ratios

    SciTech Connect (OSTI)

    Giedt, Joel; Weinberg, Evan [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12065 (United States)

    2011-10-01T23:59:59.000Z

    We extract the running coupling based on Creutz ratios in SU(2) lattice gauge theory with two Dirac fermions in the adjoint representation. Depending on how the extrapolation to zero fermion mass is performed, either backward running or an absence of running is observed at strong bare coupling. This behavior is consistent with other findings which indicate that this theory has an infrared fixed point.

  16. Effectiveness of speed trailers on low-speed urban roadways

    E-Print Network [OSTI]

    Perrillo, Kerry Victoria

    1997-01-01T23:59:59.000Z

    Efforts are being made to use speed management methods to match operating speeds to posted speeds and to reduce the variability in vehicle speeds. The effectiveness of many different methods of speed management has not been documented. This thesis...

  17. Running couplings in extra dimensions

    E-Print Network [OSTI]

    Jisuke Kubo; Haruhiko Terao; George Zoupanos

    2000-10-07T23:59:59.000Z

    The regularization scheme dependence of running couplings in extra compactified dimensions is discussed. We examine several regularization schemes explicitly in order to analyze the scheme dependence of the Kaluza-Klein threshold effects, which cause the power law running, in the case of the scalar theory in five dimensions with one dimension compactified. It is found that in 1-loop order, the net difference in the running of the coupling among the different schemes is reduced to be rather small after finite renormalization. An additional comment concerns the running couplings in the warped extra dimensions which are found to be regularization dependent above TeV scale.

  18. Coordinating the 2009 RHIC Run

    ScienceCinema (OSTI)

    Brookhaven Lab - Mei Bai

    2010-01-08T23:59:59.000Z

    Physicists working at the Brookhaven National Lab's Relativistic Heavy Ion Collider (RHIC) are exploring the puzzle of proton spin as they begin taking data during the 2009 RHIC run. For the first time, RHIC is running at a record energy of 500 giga-elect

  19. Running-mass inflation model and primordial black holes

    SciTech Connect (OSTI)

    Drees, Manuel; Erfani, Encieh, E-mail: drees@th.physik.uni-bonn.de, E-mail: erfani@th.physik.uni-bonn.de [Physikalisches Institut and Bethe Center for Theoretical Physics, Universität Bonn, Nussallee 12, 53115 Bonn (Germany)

    2011-04-01T23:59:59.000Z

    We revisit the question whether the running-mass inflation model allows the formation of Primordial Black Holes (PBHs) that are sufficiently long-lived to serve as candidates for Dark Matter. We incorporate recent cosmological data, including the WMAP 7-year results. Moreover, we include ''the running of the running'' of the spectral index of the power spectrum, as well as the renormalization group ''running of the running'' of the inflaton mass term. Our analysis indicates that formation of sufficiently heavy, and hence long-lived, PBHs still remains possible in this scenario. As a by-product, we show that the additional term in the inflaton potential still does not allow significant negative running of the spectral index.

  20. Running coupling from gluon exchange in the Schrodinger functional

    E-Print Network [OSTI]

    Yigal Shamir

    2011-10-27T23:59:59.000Z

    I propose a new method to determine the running coupling in a Schrodinger-functional setup. The method utilizes the scattering amplitude of massless fermions propagating between the time boundaries. Preliminary tests show the statistical fluctuations of the new observable to be about half those of the standard Schrodinger-functional running coupling.

  1. Observations of Running Waves in a Sunspot Chromosphere

    E-Print Network [OSTI]

    D. Shaun Bloomfield; Andreas Lagg; Sami K. Solanki

    2007-03-26T23:59:59.000Z

    Spectropolarimetric time series data of the primary spot of active region NOAA 9448 were obtained in the Si I 10827 \\AA line and the He I 10830 \\AA multiplet with the Tenerife Infrared Polarimeter. Throughout the time series the spectrograph slit was fixed over a region covering umbra, a light bridge, penumbra, and quiet sun. We present speeds of running penumbral waves in the chromosphere, their relation to both photospheric and chromospheric umbral oscillations, and their dependence on the magnetic field topology.

  2. Running tool for liner hanger

    SciTech Connect (OSTI)

    Melenyzer, G.J.

    1990-03-27T23:59:59.000Z

    This patent describes a running tool. It is for a liner hanger having an annular groove in its bore, and upwardly facing slots in its upper end, and a liner string depending therefrom.

  3. Light Speed Invariance is a Remarkable Illusion

    E-Print Network [OSTI]

    Stephan J. G. Gift

    2007-08-20T23:59:59.000Z

    Though many experiments appear to have confirmed the light speed invariance postulate of special relativity theory, this postulate is actually unverified. This paper resolves this issue by first showing the manner in which an illusion of light speed invariance occurs in two-way light speed measurement in the framework of a semi-classical absolute space theory. It then demonstrates a measurable variation of the one-way speed of light, which directly invalidates the invariance postulate and confirms the existence of the preferred reference frame of the absolute space theory.

  4. RHIC Au beam in Run 2014

    SciTech Connect (OSTI)

    Zhang, S. Y. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-09-15T23:59:59.000Z

    Au beam at the RHIC ramp in run 2014 is reviewed together with the run 2011 and run 2012. Observed bunch length and longitudinal emittance are compared with the IBS simulations. The IBS growth rate of the longitudinal emittance in run 2014 is similar to run 2011, and both are larger than run 2012. This is explained by the large transverse emittance at high intensity observed in run 2012, but not in run 2014. The big improvement of the AGS ramping in run 2014 might be related to this change. The importance of the injector intensity improvement in run 2014 is emphasized, which gives rise to the initial luminosity improvement of 50% in run 2014, compared with the previous Au-Au run 2011. In addition, a modified IBS model, which is calibrated using the RHIC Au runs from 9.8 GeV/n to 100 GeV/n, is presented and used in the study.

  5. Running the rivers: Scientists say 2011 drought showed importance of environmental flows regulations

    E-Print Network [OSTI]

    Lee, Leslie

    2012-01-01T23:59:59.000Z

    , the Texas Legislature set out to improve the regulation of these highly sought-a#22;er water supplies and enlisted both the expertise of scientists and the know-how of local stakeholders. Be#30;ing on a potentially contentious process that would require... systems. A#22;er years of input from stakeholders and research by scientists, the #28;rst phase of the environmental #26;ows process is now nearing completion, which will entail the Texas Commission on Environ- mental Quality (TCEQ ) releasing...

  6. Evaluation of daytime vs. nighttime red-light-running using an advanced warning for end of green phase system

    E-Print Network [OSTI]

    Obeng-Boampong, Kwaku Oduro

    2005-11-01T23:59:59.000Z

    The problem of dilemma zone protection and red-light-running is especially important in certain rural intersections due to the higher speeds at these intersections and their isolated nature. In addition, the presence of a larger percentage...

  7. Dynamic simulation of dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.

    1996-10-01T23:59:59.000Z

    Induction generators have been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness, and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using two induction generators with two different rated speeds. With single- speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. The operation at maximum Cp can occur only at a single wind speed. However, if the wind speed varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind-speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative to capture more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine will be investigated. One type of control algorithm for dual- speed operation is proposed. Results from a dynamic simulation will be presented to show how the control algorithm works and how power, current and torque of the system vary as the wind turbine is exposed to varying wind speeds.

  8. Lorentz transformation directly from the invariance of the speed of light via the addition law of parallel speeds

    E-Print Network [OSTI]

    Bernhard Rothenstein

    2007-09-14T23:59:59.000Z

    We show that starting with the addition law of parallel speeds derived as a consequence of the invariance of the speed of light, the Lorentz transformations for the space-time coordinates can be derived.

  9. Content Provider Speeds Application

    E-Print Network [OSTI]

    Fisher, Kathleen

    protocols like SMPP for SMS and MM7 for MMS are industry standards, carriers typically layer their own APIs.0 standards," says Rose, "and we thought that would help speed development." The AT&T API Platform includesContent Provider Speeds Application Development AT&T API Platform cuts development time and costs

  10. Gauge/Gravity Theory with Running Dilaton and Running Axion

    E-Print Network [OSTI]

    Girma Hailu

    2007-12-27T23:59:59.000Z

    We present a new gauge/gravity duality construction of the Klebanov-Strassler throat which takes corrections to the anomalous mass dimension proposed in [1] into account on the gauge theory side and both the dilaton and the axion run on the gravity side. The corresponding supergravity solutions are found using equations for type IIB flows with N=1 supersymmetry obtained in [2]. We find that magnetic couplings of the axion to D7-branes filling 4-d spacetime and wrapping 4-cycles at locations of duality transitions and invisible Dirac 8-branes whose worldvolume emanates from the worldvolume of the D7-branes are the sources for the runnings of the dilaton and the axion. Our construction provides the first explicit example of a gauge/gravity duality mapping with a running dilaton or a running axion which is an important component towards finding gravity duals to gauge theories with physically more interesting renormalization group flows such as pure confining gauge theories in four dimensions. The D7-branes also serve as gravitational source for Seiberg duality transitions. The supergravity background has distinct features which could be useful for constructing cosmological models and studying possibilities for probing stringy signatures from the early universe.

  11. The invariance of the speed of light

    E-Print Network [OSTI]

    Jerrold Franklin

    2010-02-21T23:59:59.000Z

    We show that the conclusion of a recent experiment [arXiv:0912.3934] that claims to have discovered that "the speed of light seems to depend on the motion of the observer" is wrong.

  12. Run

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResources ResourcesRobust,RomanRoy Primus RoyRufus

  13. Run

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing inRotaryRui Liu

  14. High Speed Pumps Are No Longer Limited to Low Flow Applications

    E-Print Network [OSTI]

    Burke, P. Y.

    Historically, the high-speed centrifugal pump was developed prior to World War II for rocket engine fuel pump applications for its advantages of light weight, compactness and dry running capability. Industrial derivatives were introduced in the 60’s...

  15. Coal-fueled high-speed diesel engine development

    SciTech Connect (OSTI)

    Kakwani, R. M.; Winsor, R. E.; Ryan, III, T. W.; Schwalb, J. A.; Wahiduzzaman, S.; Wilson, Jr., R. P.

    1991-11-01T23:59:59.000Z

    The objectives of this program are to study combustion feasibility by running Series 149 engine tests at high speeds with a fuel injection and combustion system designed for coal-water-slurry (CWS). The following criteria will be used to judge feasibility: (1) engine operation for sustained periods over the load range at speeds from 600 to 1900 rpm. The 149 engine for mine-haul trucks has a rated speed of 1900 rpm; (2) reasonable fuel economy and coal burnout rate; (3) reasonable cost of the engine design concept and CWS fuel compared to future oil prices.

  16. Synthetic Running Coupling of QCD

    E-Print Network [OSTI]

    Aleksey I. Alekseev

    2006-02-19T23:59:59.000Z

    Based on a study of the analytic running coupling obtained from the standard perturbation theory results up to four-loop order, the QCD ``synthetic'' running coupling \\alpha_{syn} is built. In so doing the perturbative time-like discontinuity is preserved and nonperturbative contributions not only remove the nonphysical singularities of the perturbation theory in the infrared region but also decrease rapidly in the ultraviolet region. In the framework of the approach, on the one hand, the running coupling is enhanced at zero and, on the other hand, the dynamical gluon mass m_g arises. Fixing the parameter which characterize the infrared enhancement corresponding to the string tension \\sigma and normalization, say, at M_\\tau completely define the synthetic running coupling. In this case the dynamical gluon mass appears to be fixed and the higher loop stabilization property of m_g is observed. For \\sigma = (0.42 GeV)^2 and \\alpha_{syn}(M^2_\\tau) = 0.33 \\pm 0.01 it is obtained that m_g = 530 \\pm 80 MeV.

  17. SUPER HIGH-SPEED MINIATURIZED PERMANENT MAGNET SYNCHRONOUS MOTOR

    E-Print Network [OSTI]

    Wu, Thomas

    with the design of permanent magnet synchronous motors (PMSM) to operate at super-high speed with high efficiency. The designed and fabricated PMSM was successfully tested to run upto 210,000 rpm The designed PMSM has 2000 W concept of electrical machines. After that, the modeling of PMSM for dynamic simulation is provided

  18. Balancing of high speed, flexible rotating shafts across critical speeds

    E-Print Network [OSTI]

    White, Gary Paul

    1977-01-01T23:59:59.000Z

    this is equivalent to eliminating certain sen- sors. Once the influence coefficient matrix is square, the solution procedure is exactly that of the single speed case. The computed balance weights should now null the rotor vibration at the sensor ports which were... critical speed, The Sin- gle Speed and the Exact Point-Speed techniques were determined to be relatively ineffective over this speed range; however, the Least Squares procedure yields a dramatic decrease in rotor vibration over the entire speed range...

  19. Can clocks really run backwards?

    E-Print Network [OSTI]

    Charles B. Leffert

    2002-08-12T23:59:59.000Z

    In an apparently unexplored region of relativistic spacetime, a simple thought experiment demonstrates that conjoined Lorentz transformations predict a proper clock at rest will run backwards and that prediction violates the logical principle of causality. Shown first in a modification of the standard clock paradox thought experiment, this fault carries over to finite accelerations of the moving observer. After re-examination of the standard clock paradox, a logical fault was also found in the concept of spacetime. A two-dimensional treatment of the Earth orbit predicts that our astronomers should measure proper time on distant variable objects in our own Galaxy as impossibly running backwards on approach-then-recede trajectories. The excellent record of relativity aside, we still have much new physics to learn about our spatially three-dimensional universe. It is suggested that space is not a freely stretching medium but is something that is substantive and is being produced.

  20. Running coupling for Wilson bermions

    E-Print Network [OSTI]

    Juri Rolf; Ulli Wolff

    1999-07-15T23:59:59.000Z

    A non perturbative finite size scaling technique is used to study a running coupling in lattice Yang-Mills theory coupled to a bosonic Wilson spinor field in the Schr\\"odinger functional scheme. This corresponds to two negative flavours. The scaling behaviour in this case is compared to quenched results and to QCD with two flavours. The continuum limit is confronted with renormalized perturbation theory.

  1. GASIFICATION TEST RUN TC06

    SciTech Connect (OSTI)

    Southern Company Services, Inc.

    2003-08-01T23:59:59.000Z

    This report discusses test campaign TC06 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC06. Test run TC06 was started on July 4, 2001, and completed on September 24, 2001, with an interruption in service between July 25, 2001, and August 19, 2001, due to a filter element failure in the PCD caused by abnormal operating conditions while tuning the main air compressor. The reactor temperature was varied between 1,725 and 1,825 F at pressures from 190 to 230 psig. In TC06, 1,214 hours of solid circulation and 1,025 hours of coal feed were attained with 797 hours of coal feed after the filter element failure. Both reactor and PCD operations were stable during the test run with a stable baseline pressure drop. Due to its length and stability, the TC06 test run provided valuable data necessary to analyze long-term reactor operations and to identify necessary modifications to improve equipment and process performance as well as progressing the goal of many thousands of hours of filter element exposure.

  2. Reducing EnergyPlus Run Time For Code Compliance Tools

    SciTech Connect (OSTI)

    Athalye, Rahul A.; Gowri, Krishnan; Schultz, Robert W.; Glazer, Jason

    2014-09-12T23:59:59.000Z

    Integration of the EnergyPlus ™ simulation engine into performance-based code compliance software raises a concern about simulation run time, which impacts timely feedback of compliance results to the user. EnergyPlus annual simulations for proposed and code baseline building models, and mechanical equipment sizing result in simulation run times beyond acceptable limits. This paper presents a study that compares the results of a shortened simulation time period using 4 weeks of hourly weather data (one per quarter), to an annual simulation using full 52 weeks of hourly weather data. Three representative building types based on DOE Prototype Building Models and three climate zones were used for determining the validity of using a shortened simulation run period. Further sensitivity analysis and run time comparisons were made to evaluate the robustness and run time savings of using this approach. The results of this analysis show that the shortened simulation run period provides compliance index calculations within 1% of those predicted using annual simulation results, and typically saves about 75% of simulation run time.

  3. PRELIMINARY Run Shutdown BL Commissioning

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPO Website Directory PPPO Website

  4. The spectral index and its running in axionic curvaton

    SciTech Connect (OSTI)

    Takahashi, Fuminobu, E-mail: fumi@tuhep.phys.tohoku.ac.jp [Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

    2013-06-01T23:59:59.000Z

    We show that a sizable running spectral index suggested by the recent SPT data can be explained in the axionic curvaton model with a potential that consists of two sinusoidal contributions of different height and period. We find that the running spectral index is generically given by dn{sub s}/dln k ? 2?/?N (n{sub s}?1), where ?N is the e-folds during one period of modulations. In the string axiverse, axions naturally acquire a mass from multiple contributions, and one of the axions may be responsible for the density perturbations with a sizable running spectral index via the curvaton mechanism. We note that the axionic curvaton model with modulations can also accommodate the red-tilted spectrum with a negligible running, without relying on large-field inflation.

  5. On the Running of the Cosmological Constant in Quantum General Relativity

    E-Print Network [OSTI]

    B. F. L. Ward

    2009-08-12T23:59:59.000Z

    We present arguments that show what the running of the cosmological constant means when quantum general relativity is formulated following the prescription developed by Feynman.

  6. OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY

    E-Print Network [OSTI]

    OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY AMANDINE extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated oxygen deficit) and an energy recreation term when the speed decreases. We

  7. High speed door assembly

    DOE Patents [OSTI]

    Shapiro, C.

    1993-04-27T23:59:59.000Z

    A high speed door assembly is described, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  8. High speed door assembly

    DOE Patents [OSTI]

    Shapiro, Carolyn (Idaho Falls, ID)

    1993-01-01T23:59:59.000Z

    A high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  9. NAIHC Convention and Trade Show

    Broader source: Energy.gov [DOE]

    The National American Indian Housing Council's (NAIHC) most longstanding Annual Event, the 39th Annual NAIHC Convention and Trade Show is an opportunity to learn about tribal housing, attend...

  10. ATLAS inner detector: the Run 1 to Run 2 transition, and first experience from Run 2

    E-Print Network [OSTI]

    Dobos, Daniel; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS experiment is equipped with a tracking system, the Inner Detector, built using different technologies, silicon planar sensors (pixel and micro-strip) and gaseous drift- tubes, all embedded in a 2T solenoidal magnetic field. For the LHC Run II, the system has been upgraded; taking advantage of the long showdown, the Pixel Detector was extracted from the experiment and brought to surface, to equip it with new service quarter panels, to repair modules and to ease installation of the Insertable B-Layer (IBL), a fourth layer of pixel detectors, installed in May 2014 between the existing Pixel Detector and a new smaller radius beam-pipe at a radius of 3.3 cm from the beam axis. To cope with the high radiation and pixel occupancy due to the proximity to the interaction point and the increase of Luminosity that LHC will face in Run-2, a new read-out chip within CMOS 130nm and two different silicon sensor pixel technologies (planar and 3D) have been developed. SCT and TRT systems consolidation was also carri...

  11. Two-speed transaxle

    DOE Patents [OSTI]

    Kalns, Ilmars (Northville, MI)

    1981-01-01T23:59:59.000Z

    Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.

  12. Balancing of high speed, flexible rotating shafts across critical speeds 

    E-Print Network [OSTI]

    White, Gary Paul

    1977-01-01T23:59:59.000Z

    BALANCING OF HIGH SPEED, FLEXIBLE ROTATING SHAFTS ACROSS CRITICAL SPEEDS A Thesis by Gary Paul White Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1977 Major Subject: Mechanical Engineering Gary Paul White 1977 BALANCING OF HIGH SPEED, FLEXIBLE ROTATING SHAFTS ACROSS CRITICAL SPEEDS A Thesis by GARY PAUL WHITE Approved as to style and content by: Head of Department Member August...

  13. Managing Beef Cattle for Show

    E-Print Network [OSTI]

    Herd, Dennis B.; Boleman, Chris; Boleman, Larry L.

    2001-11-16T23:59:59.000Z

    in show diets because of its rapid digestion and tendency to cause acido- sis (see the section on health). Oats are excellent for growth and development of steers or heifers. A mixture similar in nutrient content to oats can be formulated with a high...

  14. Scheduling for Speed Bounded Processors Nikhil Bansal 1 , HoLeung Chan 2 , TakWah Lam 3 , and LapKei Lee 3

    E-Print Network [OSTI]

    Lam, Tak-Wah

    . Most modern processors use dynamic speed scaling to manage their energy usage. This leads maximum speed T . The processor uses energy at rate s # when run at speed s, where # > 1 is a constant to the problem of designing execution strategies that are both energy efficient, and yet have almost optimum

  15. Comparing Computer Run Time of Building Simulation Programs

    E-Print Network [OSTI]

    Hong, Tianzhen

    2008-01-01T23:59:59.000Z

    an approach to comparing computer run time of buildingthe purpose of comparing computer run time. Modelers shouldATIONAL L ABORATORY Comparing Computer Run Time of Building

  16. Natural versus Commercial Carbohydrate Supplementation and Endurance Running Performance

    E-Print Network [OSTI]

    Too, Brandon W; Cicai, Sarah; Hockett, Kali R; Applegate, Elizabeth; Davis, Brian A; Casazza, Gretchen A

    2012-01-01T23:59:59.000Z

    from a drink during running compared to cycling exercise.and gastrointestinal distress while running. Med Sci Sportssupplementation and endurance running performance. Journal

  17. Neurobiological and Physiological Underpinnings of High Voluntary Wheel Running

    E-Print Network [OSTI]

    Kolb, Erik Mason

    2010-01-01T23:59:59.000Z

    for high voluntary wheel running. Physiol. Behav. 83, 515-for high voluntary wheel-running: effect on skeletal musclefor high endurance running increases hindlimb symmetry.

  18. Odderon with a running coupling constant

    E-Print Network [OSTI]

    M. A. Braun

    2007-07-16T23:59:59.000Z

    The running coupling is introduced into the equation for the odderon via the bootstrap relation. It is shown that the previously found odderon state with a maximal intercept, which is constructed from antisymmetric pomeron wave function, continues to exist in the running coupling case. Its intercept is found to remain equal to unity independent of the behaviour assumed for the running coupling at low momenta.

  19. Collider shot setup for Run 2 observations and suggestions

    SciTech Connect (OSTI)

    Annala, J.; Joshel, B.

    1996-01-31T23:59:59.000Z

    This note is intended to provoke discussion on Collider Run II shot setup. We hope this is a start of activities that will converge on a functional description of what is needed for shot setups in Collider Run II. We will draw on observations of the present shot setup to raise questions and make suggestions for the next Collider run. It is assumed that the reader has some familiarity with the Collider operational issues. Shot setup is defined to be the time between the end of a store and the time the Main Control Room declares colliding beams. This is the time between Tevatron clock events SCE and SCB. This definition does not consider the time experiments use to turn on their detectors. This analysis was suggested by David Finley. The operational scenarios for Run II will require higher levels of reliability and speed for shot setup. See Appendix I and II. For example, we estimate that a loss of 3 pb{sup {minus}1}/week (with 8 hour stores) will occur if shot setups take 90 minutes instead of 30 minutes. In other words: If you do 12 shots for one week and accept an added delay of one minute in each shot, you will loose more than 60 nb{sup {minus}1} for that week alone (based on a normal shot setup of 30 minutes). These demands should lead us to be much more pedantic about all the factors that affect shot setups. Shot setup will be viewed as a distinct process that is composed of several inter- dependent `components`: procedures, hardware, controls, and sociology. These components don`t directly align with the different Accelerator Division departments, but are topical groupings of the needed accelerator functions. Defining these components, and categorizing our suggestions within them, are part of the goal of this document. Of course, some suggestions span several of these components.

  20. High speed flywheel

    DOE Patents [OSTI]

    McGrath, Stephen V. (Knoxville, TN)

    1991-01-01T23:59:59.000Z

    A flywheel for operation at high speeds utilizes two or more ringlike coments arranged in a spaced concentric relationship for rotation about an axis and an expansion device interposed between the components for accommodating radial growth of the components resulting from flywheel operation. The expansion device engages both of the ringlike components, and the structure of the expansion device ensures that it maintains its engagement with the components. In addition to its expansion-accommodating capacity, the expansion device also maintains flywheel stiffness during flywheel operation.

  1. Running spectral index from inflation with modulations

    SciTech Connect (OSTI)

    Kobayashi, Takeshi [Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582 (Japan); Takahashi, Fuminobu, E-mail: takeshi.kobayashi@ipmu.jp, E-mail: fuminobu.takahashi@ipmu.jp [Institute for the Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan)

    2011-01-01T23:59:59.000Z

    We argue that a large negative running spectral index, if confirmed, might suggest that there are abundant structures in the inflaton potential, which result in a fairly large (both positive and negative) running of the spectral index at all scales. It is shown that the center value of the running spectral index suggested by the recent CMB data can be easily explained by an inflaton potential with superimposed periodic oscillations. In contrast to cases with constant running, the perturbation spectrum is enhanced at small scales, due to the repeated modulations. We mention that such features at small scales may be seen by 21 cm observations in the future.

  2. High speed transient sampler

    DOE Patents [OSTI]

    McEwan, T.E.

    1995-11-28T23:59:59.000Z

    A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing. 17 figs.

  3. High speed transient sampler

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing.

  4. Maximum Running Speed of Captive Bar-Headed Geese Is Unaffected by Severe Hypoxia

    E-Print Network [OSTI]

    Scott, Graham

    of Zoology, University of British Columbia, Vancouver, Canada, 6 Department of Biology, McMaster University lower than bar-headed geese. In bar-headed geese, partial pressures of oxygen and carbon dioxide in both Research Council (BBSRC) of the United Kingdom [Grant number BB/F015615/1] to CMB and PJB. The funders had

  5. Selection of LHCb results from Run I

    E-Print Network [OSTI]

    A. Hicheur

    2015-03-17T23:59:59.000Z

    At the eve of the second LHC data taking run, some of the most recent results obtained by the LHCb collaboration with Run I data are reviewed. Improved measurements on CP violation, unitary triangle and mixing parameters are shown. Recent progress on physics in the forward region is illustrated by examples picked up in the electroweak physics and beyond Standard Model searches.

  6. Systematic Controller Design Methodology for Variable-Speed Wind Turbines

    SciTech Connect (OSTI)

    Hand, M. M.; Balas, M. J.

    2002-02-01T23:59:59.000Z

    Variable-speed, horizontal axis wind turbines use blade-pitch control to meet specified objectives for three operational regions. This paper provides a guide for controller design for the constant power production regime. A simple, rigid, non-linear turbine model was used to systematically perform trade-off studies between two performance metrics. Minimization of both the deviation of the rotor speed from the desired speed and the motion of the actuator is desired. The robust nature of the proportional-integral-derivative controller is illustrated, and optimal operating conditions are determined. Because numerous simulation runs may be completed in a short time, the relationship between the two opposing metrics is easily visualized.

  7. The Boyer Benchmark at Warp Speed HenryG. Baker

    E-Print Network [OSTI]

    Hunt Jr., Warren A.

    The Boyer Benchmark at Warp Speed HenryG. Baker Nimble Computer Corporation, 16231 Meadow Ridge Way, Encino, CA 91436 (818) 501-4956 (818) 986-1360 (FAX) We show how to speed up the Boyer Benchmark. INTRODUCTION The Boyer benchmark is one of the most durable benchmarks in the Lisp landscape. It was already

  8. Running coupling corrections to inclusive gluon production

    E-Print Network [OSTI]

    W. A. Horowitz; Yuri V. Kovchegov

    2011-06-27T23:59:59.000Z

    We calculate running coupling corrections for the lowest-order gluon production cross section in high energy hadronic and nuclear scattering using the BLM scale-setting prescription. At leading order there are three powers of fixed coupling; in our final answer, these three couplings are replaced by seven factors of running coupling: five in the numerator and two in the denominator, forming a `septumvirate' of running couplings, analogous to the `triumvirate' of running couplings found earlier for the small-x BFKL/BK/JIMWLK evolution equations. It is interesting to note that the two running couplings in the denominator of the `septumvirate' run with complex-valued momentum scales, which are complex conjugates of each other, such that the production cross section is indeed real. We use our lowest-order result to conjecture how running coupling corrections may enter the full fixed-coupling k_T-factorization formula for gluon production which includes non-linear small-x evolution.

  9. Running of Running of the Spectral Index and WMAP Three-year data

    E-Print Network [OSTI]

    Qing-Guo Huang

    2006-10-21T23:59:59.000Z

    Three-year data of WMAP implies not only a negative running of the spectral index with large absolute value, but also a large positive running of running of the spectral index with order of the magnitude $10^{-2}$. We calculate the running of running in usual inflation model and noncommutative inflation model. A large tensor-scalar ratio $r\\geq 1.23$ is needed in order to fit the WMAP data in the noncommutative inflation model, which roughly saturates the observational upper bound on it.

  10. Running coupling effects in the evolution of jet quenching

    E-Print Network [OSTI]

    E. Iancu; D. N. Triantafyllopoulos

    2014-05-14T23:59:59.000Z

    We study the consequences of including the running of the QCD coupling in the equation describing the evolution of the jet quenching parameter $\\hat q$ in the double logarithmic approximation. To start with, we revisit the case of a fixed coupling, for which we obtain exact solutions valid for generic values of the transverse momentum (above the medium saturation scale) and corresponding to various initial conditions. In the case of a running coupling, we construct approximate solutions in the form of truncated series obtained via successive iterations, whose convergence is well under control. We thus deduce the dominant asymptotic behavior of the renormalized $\\hat q$ in the limit of a large evolution time $Y\\equiv\\ln(L/\\lambda)$, with $L$ the size of the medium and $\\lambda$ the typical wavelength of a medium constituent. We show that the asymptotic expansion is universal with respect to the choice of the initial condition at $Y=0$ and, moreover, it is remarkably similar to the corresponding expansion for the saturation momentum of a shockwave (a large nucleus). As expected, the running of the coupling significantly slows down the increase of $\\hat q$ with $Y$ in the asymptotic regime at $Y\\gg 1$. For the phenomenologically interesting value $Y\\simeq 3$, we find an enhancement factor close to 3, independently of the initial condition and for both fixed and running coupling.

  11. Epistemological resources 1 Running Head: EPISTEMOLOGICAL RESOURCES

    E-Print Network [OSTI]

    Elby, Andy

    Epistemological resources 1 Running Head: EPISTEMOLOGICAL RESOURCES Epistemological resources University Maryland, College Park Trisha Kagey Montgomery County Public Schools #12;Epistemological resources are better understood as made up of finer-grained cognitive resources whose activation depends sensitively

  12. SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations

    E-Print Network [OSTI]

    Zacks, Jeffrey M.

    SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations Multiple Systems for Spatial Imagery: Transformations of Objects and Bodies Jeffrey M. Zacks* and Barbara Tversky * Washington COGNITION & COMPUTATION #12;SPATIAL TRANSFORMATIONS 2 Abstract Problem-solving often requires imagining

  13. Facilitating Forgiveness 1 Running head: FACILITATING FORGIVENESS

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Facilitating Forgiveness 1 Running head: FACILITATING FORGIVENESS FACILITATING FORGIVENESS. Infidelity causes significant damage for couples and results in a loss of trust and relationship stability undermine a relationship's stability and security, resulting in confusion, loss of trust, and tremendous

  14. Running heavy-quark masses in DIS

    E-Print Network [OSTI]

    S. Alekhin; S. -O. Moch

    2011-07-03T23:59:59.000Z

    We report on determinations of the running mass for charm quarks from deep-inelastic scattering reactions. The method provides complementary information on this fundamental parameter from hadronic processes with space-like kinematics. The obtained values are consistent with but systematically lower than the world average as published by the PDG. We also address the consequences of the running mass scheme for heavy-quark parton distributions in global fits to deep-inelastic scattering data.

  15. Calculating the running coupling in strong electroweak models

    E-Print Network [OSTI]

    Zoltan Fodor; Kieran Holland; Julius Kuti; Daniel Nogradi; Chris Schroeder

    2009-11-16T23:59:59.000Z

    One possibility for Beyond Standard Model physics is a new strongly-interacting gauge theory. One way to determine if a non-abelian gauge theory is QCD-like or conformal is to measure the running of the renormalized gauge coupling. We define the renormalized coupling from Wilson loop ratios, and measure these ratios via lattice simulations. We test this method in SU(3) pure gauge theory and show some first results for simulations with dynamical fermions in the fundamental representation.

  16. ShowFlow: A practical interface for groundwater modeling

    SciTech Connect (OSTI)

    Tauxe, J.D.

    1990-12-01T23:59:59.000Z

    ShowFlow was created to provide a user-friendly, intuitive environment for researchers and students who use computer modeling software. What traditionally has been a workplace available only to those familiar with command-line based computer systems is now within reach of almost anyone interested in the subject of modeling. In the case of this edition of ShowFlow, the user can easily experiment with simulations using the steady state gaussian plume groundwater pollutant transport model SSGPLUME, though ShowFlow can be rewritten to provide a similar interface for any computer model. Included in this thesis is all the source code for both the ShowFlow application for Microsoft{reg sign} Windows{trademark} and the SSGPLUME model, a User's Guide, and a Developer's Guide for converting ShowFlow to run other model programs. 18 refs., 13 figs.

  17. Maglev vehicles and superconductor technology: Integration of high-speed ground transportation into the air travel system

    SciTech Connect (OSTI)

    Johnson, L.R.; Rote, D.M.; Hull, J.R.; Coffey, H.T.; Daley, J.G.; Giese, R.F.

    1989-04-01T23:59:59.000Z

    This study was undertaken to (1) evaluate the potential contribution of high-temperature superconductors (HTSCs) to the technical and economic feasibility of magnetically levitated (maglev) vehicles, (2) determine the status of maglev transportation research in the United States and abroad, (3) identify the likelihood of a significant transportation market for high-speed maglev vehicles, and (4) provide a preliminary assessment of the potential energy and economic benefits of maglev systems. HTSCs should be considered as an enhancing, rather than an enabling, development for maglev transportation because they should improve reliability and reduce energy and maintenance costs. Superconducting maglev transportation technologies were developed in the United States in the late 1960s and early 1970s. Federal support was withdrawn in 1975, but major maglev transportation programs were continued in Japan and West Germany, where full-scale prototypes now carry passengers at speeds of 250 mi/h in demonstration runs. Maglev systems are generally viewed as very-high-speed train systems, but this study shows that the potential market for maglev technology as a train system, e.g., from one downtown to another, is limited. Rather, aircraft and maglev vehicles should be seen as complementing rather than competing transportation systems. If maglev systems were integrated into major hub airport operations, they could become economical in many relatively high-density US corridors. Air traffic congestion and associated noise and pollutant emissions around airports would also be reduced. 68 refs., 26 figs., 16 tabs.

  18. Low pressure high speed Stirling air engine. Final technical report

    SciTech Connect (OSTI)

    Ross, M.A.

    1980-06-16T23:59:59.000Z

    The purpose of this project was to design, construct and test a simple, appropriate technology low pressure, high speed, wood-fired Stirling air engine of 100 W output. The final design was a concentric piston/displacer engine of 454 in. bore and 1 in. stroke with a rhombic drive mechanism. The project engine was ultimately completed and tested, using a propane burner for all tests as a matter of convenience. The 100 W aim was exceeded, at atmospheric pressure, over a wide range of engine speed with the maximum power being 112 W at 1150 rpm. A pressure can was constructed to permit pressurization; however the grant funds were running out, and the only pressurized power test attempted was unsuccessful due to seal difficulties. This was a disappointment because numerous tests on the 4 cubic inch engine suggested power would be more than doubled with pressurization at 25 psig. A manifold was designed and constructed to permit operation of the engine over a standard No. 40 pot bellied stove. The engine was run successfully, but at reduced speed and power, over this stove. The project engine started out being rather noisy in operation, but modifications ultimately resulted in a very quiet engine. Various other difficulties and their solutions also are discussed. (LCL)

  19. Splice site strength–dependent activity and genetic buffering by poly-G runs

    E-Print Network [OSTI]

    Xiao, Xinshu

    Pre-mRNA splicing is regulated through the combinatorial activity of RNA motifs, including splice sites and splicing regulatory elements. Here we show that the activity of the G-run (polyguanine sequence) class of splicing ...

  20. Numerical wind speed simulation model

    SciTech Connect (OSTI)

    Ramsdell, J.V.; Athey, G.F.; Ballinger, M.Y.

    1981-09-01T23:59:59.000Z

    A relatively simple stochastic model for simulating wind speed time series that can be used as an alternative to time series from representative locations is described in this report. The model incorporates systematic seasonal variation of the mean wind, its standard deviation, and the correlation speeds. It also incorporates systematic diurnal variation of the mean speed and standard deviation. To demonstrate the model capabilities, simulations were made using model parameters derived from data collected at the Hanford Meteorology Station, and results of analysis of simulated and actual data were compared.

  1. Running Allegro Common Lisp From Emacs 1 Getting Started

    E-Print Network [OSTI]

    Anderson, Charles W.

    Running Allegro Common Lisp From Emacs 1 Getting Started A powerful alternative to running ACL from the unix command line is to run Allegro Common Lisp (ACL) within one window of an Emacs \\Lambda screen

  2. Design of running-man, a bipedal robot

    E-Print Network [OSTI]

    Chen, Jin

    2011-01-01T23:59:59.000Z

    Table 4.1 Specifications of Running Man robot prototype HipSan Diego Design of running-man, a bipedal robot A Thesis41 v Implementation of Running

  3. SS-shifted architecture Run roadfinder with default bank

    E-Print Network [OSTI]

    SS-shifted architecture Run roadfinder with default bank Run roadfinder with ss-shifted bank track fitter DONE DONE #12;SCT-first architecture Run full chain in SCT-only configuration ­ Road

  4. array shows potential: Topics by E-print Network

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

    phased arrays is inspection speed: linear travel speeds of up to 100 mmsec are possible. Sizing is typically performed using diffraction approaches (TOFD and back diffraction),...

  5. Running fermi with one-stage compressor: advantages, layout, performance

    E-Print Network [OSTI]

    Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

    2008-01-01T23:59:59.000Z

    Running FERMI with one-stage compressor: advantages, layout,re-examines the option of running the FERMI FEL driver with

  6. Speeding up Entanglement Degradation

    E-Print Network [OSTI]

    R. B. Mann; V. M Villalba

    2009-08-01T23:59:59.000Z

    Entanglement between two free bosonic modes can be determined via detection of each mode by different observers and then observing the correlations between their measurements. We show that such entanglement is degraded as a function of time if one observer begins in a state of inertial motion but ends in a state of uniform acceleration while the other remains inertial. At late times we recover previously established results for observers in relative uniform acceleration.

  7. Scheduling Job Families on Non-Identical Parallel Machines under Run-To-Run Control Constraints

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Scheduling Job Families on Non-Identical Parallel Machines under Run-To-Run Control Constraints A constraint on jobs of the same product, i.e. the time interval between two consecutive jobs of the same are presented for scheduling jobs on non-identical parallel machines with setup times. In semiconductor

  8. High Speed Reconfigurable FFT Design by Vedic Mathematics

    E-Print Network [OSTI]

    Raman, Ashish; Sarin, R K

    2010-01-01T23:59:59.000Z

    The Fast Fourier Transform (FFT) is a computationally intensive digital signal processing (DSP) function widely used in applications such as imaging, software-defined radio, wireless communication, instrumentation. In this paper, a reconfigurable FFT design using Vedic multiplier with high speed and small area is presented. Urdhava Triyakbhyam algorithm of ancient Indian Vedic Mathematics is utilized to improve its efficiency. In the proposed architecture, the 4x4 bit multiplication operation is fragmented reconfigurable FFT modules. The 4x4 multiplication modules are implemented using small 2x2bit multipliers. Reconfigurability at run time is provided for attaining power saving. The reconfigurable FFT has been designed, optimized and implemented on an FPGA based system. This reconfigurable FFT is having the high speed and small area as compared to the conventional FFT.

  9. Sustainably Priced Energy Enterprise Development (SPEED) Goals

    Broader source: Energy.gov [DOE]

    Vermont's Sustainably Priced Energy Enterprise Development (SPEED) Program was created by legislation in 2005 to promote renewable energy development. The SPEED program itself is not a renewable...

  10. Calculator program optimizes bit weight, rotary speed, reducing drilling cost

    SciTech Connect (OSTI)

    Simpson, M.A.

    1984-04-23T23:59:59.000Z

    Bit selection, bit weight, and rotary speed have repeatedly proven to be the most important and commonly overlooked alterable factors which control penetration rate, footage, and overall drilling cost. This is particularly true in offshore operations where drilling costs are highest and the greatest cost savings stand to be achieved through implementation of proven optimization techniques. The myth that bit weights and rotary speeds cannot be optimized in directional holes has hindered the industry from using this virtually cost-free method for reducing drilling cost. The use of optimized bit weights and rotary speeds in conjunction with minimum cost bit programs based on cost per foot analysis of previous bit runs in the area was implemented on a five-well platform in the Grand Isle Block 20 field, offshore Louisiana. Each of the directional wells was drilled substantially faster and cheaper than the discovery well, which was a straight hole. Average reductions in footage cost of 31.3%, based on daily operating cost of $30,000/day, and increase in average daily footage drilled of 45.2% were effected by ''collectively optimizing'' drilling performance. The ''Optimizer'' program is an HP-41CV adaptation of the Bourgoyne and Young drilling model. It was used to calculate the optimum bit weights and rotary speeds based on field drilling tests; historical bit and bearing wear data; and current operating conditions, cost, and constraints.

  11. Probability Primer 1 Running head: PROBABILITY PRIMER

    E-Print Network [OSTI]

    Yuille, Alan L.

    provides the opportunity to draw upon work in computer science, engineering, mathematics, and statisticsProbability Primer 1 Running head: PROBABILITY PRIMER A Primer on Probabilistic Inference Thomas L. Griffiths Department of Psychology University of California, Berkeley Alan Yuille Department of Statistics

  12. Hazard % free free espresso Over Run

    E-Print Network [OSTI]

    Dill, David L.

    Total Products Hazard­ Hazard­ % free free espresso­ Over­ Run­ name in/out Method exact head time 5 0 1 dme­fast­opt 5/3 8 8 0 1 Table 2. Comparison of Hazard­Free Logic Minimization with espresso­level hazard­free minimization prob­ lem for several reasons: the general problem has not pre­ viously been

  13. Run-Time Library Routines Reference

    E-Print Network [OSTI]

    California at San Diego, University of

    MDS Run-Time Library Routines Reference Manual February 1993 Software Version: MDS 5.2 VAX.S.A. The following are trademarks of Digitial Equipment Corporation: CDD DECnet VAX DATATRIEVE DECUS VAXcluster DEC MicroVAX VAX Information Architecture DEC/CMS MicroVMS VMS DEC/MMS Rdb/VMS VT IDL (Interactive Data

  14. Revised Run 10 Plan (Nov. 25, 2009)

    E-Print Network [OSTI]

    at energies below the RHIC transition energy, without the addition of new trigger detectors. The latter discussion of priorities for the start of a low-energy scan in Run 10. This discussion was prompted by two new facts revealed in the preceding weeks: (1) we received an FY10 RHIC budget from the Office

  15. Gravitational Correction to Running of Gauge Couplings

    E-Print Network [OSTI]

    Sean P. Robinson; Frank Wilczek

    2006-06-09T23:59:59.000Z

    We calculate the contribution of graviton exchange to the running of gauge couplings at lowest non-trivial order in perturbation theory. Including this contribution in a theory that features coupling constant unification does not upset this unification, but rather shifts the unification scale. When extrapolated formally, the gravitational correction renders all gauge couplings asymptotically free.

  16. The QCD Running Coupling and its Measurement

    E-Print Network [OSTI]

    Guido Altarelli

    2013-03-25T23:59:59.000Z

    In this lecture, after recalling the basic definitions and facts about the running coupling in QCD, I present a critical discussion of the methods for measuring $\\alpha_s$ and select those that appear to me as the most reliably precise

  17. The ATLAS Tau Trigger Performance during LHC Run 1 and Prospects for Run 2

    E-Print Network [OSTI]

    Yuki Sakurai

    2014-09-09T23:59:59.000Z

    Triggering on hadronic tau decays is essential for a wide variety of analyses of interesting physics processes at ATLAS. The ATLAS tau trigger combines information from the tracking detectors and calorimeters to identify the signature of hadronically decaying tau leptons. In Run 2 operation expected to start in 2015, the trigger strategies will become more important than ever before. In this paper, the tau trigger performance during Run 1 is summarized and also an overview of the developments of Run 2 tau trigger strategy is presented.

  18. Pitch-controlled variable-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.

    2000-03-01T23:59:59.000Z

    Wind energy is a viable option to complement other types of pollution-free generation. In the early development of wind energy, the majority of wind turbines were operated at constant speed. Recently, the number of variable-speed wind turbines installed in wind farms has increased and more wind turbine manufacturers are making variable-speed wind turbines. This paper covers the operation of variable-speed wind turbines with pitch control. The system the authors considered is controlled to generate maximum energy while minimizing loads. The maximization of energy was only carried out on a static basis and only drive train loads were considered as a constraint. In medium wind speeds, the generator and power converter control the wind turbine to capture maximum energy from the wind. In the high wind speed region, the wind turbine is controlled to maintain the aerodynamic power produced by the wind turbine. Two methods to adjust the aerodynamic power were investigated: pitch control and generator load control, both of which are employed to control the operation of the wind turbine. The analysis and simulation shows that the wind turbine can be operated at its optimum energy capture while minimizing the load on the wind turbine for a wide range of wind speeds.

  19. Effect of running coupling on photon emission from quark gluon plasma

    E-Print Network [OSTI]

    Mahatsab Mandal; Sukanya Mitra; Pradip Roy; Sourav Sarkar

    2012-06-22T23:59:59.000Z

    We discuss the role of running coupling on the thermal photon yield from quark gluon plasma. It is shown that the photon production rate from the partonic phase is considerably enhanced when running coupling is considered with respect to a fixed value. However, we show by explicit evaluation that although this difference survives the space-time evolution the experimental data cannot distinguish between the two once the hard contribution, which is an essential component of photon production mechanism, is added.

  20. The running coupling of 8 flavors and 3 colors

    E-Print Network [OSTI]

    Zoltan Fodor; Kieran Holland; Julius Kuti; Santanu Mondal; Daniel Nogradi; Chik Him Wong

    2015-03-03T23:59:59.000Z

    We compute the renormalized running coupling of SU(3) gauge theory coupled to N_f = 8 flavors of massless fundamental Dirac fermions. The recently proposed finite volume gradient flow scheme is used. The calculations are performed at several lattice spacings allowing for a controlled continuum extrapolation. The results for the discrete beta-function show that it is monotonic without any sign of a fixed point in the range of couplings we cover. As a cross check the continuum results are compared with the well-known perturbative continuum beta-function for small values of the renormalized coupling and perfect agreement is found.

  1. Inequality and Economic Growth: Bridging the Short-run and the Long-run

    E-Print Network [OSTI]

    Grijalva, Diego F.

    2011-01-01T23:59:59.000Z

    40, 1–46. Benabou, Roland, “Inequality and Growth,” in BenAkira Nishiyama, “Income Inequality and Growth - Does theU Relationship between Inequality and Long-run Growth,”

  2. The Physics Case for Extended Tevatron Running

    E-Print Network [OSTI]

    Darien R. Wood

    2010-11-06T23:59:59.000Z

    Run II of the Tevatron collider at Fermilab is currently scheduled to end late in 2011. Given the current performance of the collider and of the CDF and D0 detectors, it is estimated that the current data set could be approximately doubled with a run extended into 2014. A few examples are presented of the physics potential of these additional statistics. These are discussed in the context of the expected reach of the LHC 7 TeV data and the existing Tevatron data. In particular, an extraordinary opportunity is described which could probe the existence of a standard model Higgs boson with mass in the currently preferred region between 115 GeV and 150 GeV.

  3. The Physics Case for Extended Tevatron Running

    SciTech Connect (OSTI)

    Wood, Darien R.

    2010-11-01T23:59:59.000Z

    Run II of the Tevatron collider at Fermilab is currently scheduled to end late in 2011. Given the current performance of the collider and of the CDF and D0 detectors, it is estimated that the current data set could be approximately doubled with a run extended into 2014. A few examples are presented of the physics potential of these additional statistics. These are discussed in the context of the expected reach of the LHC 7 TeV data and the existing Tevatron data. In particular, an extraordinary opportunity is described which could probe the existence of a standard model Higgs boson with mass in the currently preferred region between 115 GeV and 150 GeV.

  4. Comparison of CAISO-run Plexos output with LLNL-run Plexos output

    SciTech Connect (OSTI)

    Schmidt, A; Meyers, C; Smith, S

    2011-12-20T23:59:59.000Z

    In this report we compare the output of the California Independent System Operator (CAISO) 33% RPS Plexos model when run on various computing systems. Specifically, we compare the output resulting from running the model on CAISO's computers (Windows) and LLNL's computers (both Windows and Linux). We conclude that the differences between the three results are negligible in the context of the entire system and likely attributed to minor differences in Plexos version numbers as well as the MIP solver used in each case.

  5. Best Practices for Running a Hyperfunctional Psychology

    E-Print Network [OSTI]

    Siegle, Greg J.

    Best Practices for Running a Hyperfunctional Psychology Laboratory Greg J. Siegle, Ph.D. University of Pittsburgh School of Medicine Presented work supported by MH082998 These slides available at http://www.pitt.edu/~gsiegle/SiegleLaboratoryBestPracticesColloquium.pdf #12;Why bother? · You and others can trust your data ­ It's easy to know when you step into a best-practices

  6. Jet physics in Run 2 at CDF

    SciTech Connect (OSTI)

    Field, R.; /Florida U.

    2005-01-01T23:59:59.000Z

    New CDF Run 2 results on the inclusive jet cross section (K{sub T} algorithm) and the b-jet cross section (MidPoint algorithm) are presented and compared with theory. We also study the ''underlying event'' by using the direction of the leading jet to isolate regions of {eta}-{phi} space that are very sensitive to the ''beam-beam'' remnants and to multiple parton interactions.

  7. A Machian Version of Einstein's Variable Speed of Light Theory

    E-Print Network [OSTI]

    Unzicker, Alexander

    2015-01-01T23:59:59.000Z

    It is little known that while developing general relativity, Einstein's very first idea was a variable speed of light theory. Indeed spacetime curvature can be mimicked by a speed of light $c(r)$ that depends on the distribution of masses. Einstein's 1911 theory was considerably improved by Robert Dicke in 1957, but only recently the equivalence of the variable speed of light approach to the conventional formalism has been demonstrated (Broekaert, 2008). Using Green's functions, we show that Einstein's 1911 idea can be expressed in an analytic form, similar to the Poisson equation. Using heuristic arguments, we derive then a simple formula that directly relates curvature $w$ to the local speed of light, $w= -c^2 \\Delta \\frac{1}{c^2}$. In contrast to the conventional formulation, this allows for a Machian interpretation of general relativity and the gravitational constant $G$. Gravity, though described by local equations, would have its origin in all other masses in the universe.

  8. A Machian Version of Einstein's Variable Speed of Light Theory

    E-Print Network [OSTI]

    Alexander Unzicker; Jan Preuss

    2015-03-13T23:59:59.000Z

    It is little known that while developing general relativity, Einstein's very first idea was a variable speed of light theory. Indeed spacetime curvature can be mimicked by a speed of light $c(r)$ that depends on the distribution of masses. Einstein's 1911 theory was considerably improved by Robert Dicke in 1957, but only recently the equivalence of the variable speed of light approach to the conventional formalism has been demonstrated (Broekaert, 2008). Using Green's functions, we show that Einstein's 1911 idea can be expressed in an analytic form, similar to the Poisson equation. Using heuristic arguments, we derive then a simple formula that directly relates curvature $w$ to the local speed of light, $w= -c^2 \\Delta \\frac{1}{c^2}$. In contrast to the conventional formulation, this allows for a Machian interpretation of general relativity and the gravitational constant $G$. Gravity, though described by local equations, would have its origin in all other masses in the universe.

  9. Running loss emissions from in-use vehicles (CRC project number E-35-2). Final report

    SciTech Connect (OSTI)

    Haskew, H.M.; Eng, K.D.; Liberty, T.F.; Reuter, R.M.

    1999-02-01T23:59:59.000Z

    In Mesa, Arizona, a total of 150 vehicles were recruited at a local I/M lane and tested for running loss emissions at the Automotive Testing Labs (ATL). Running loss emissions were measured in a Running Loss SHED (Sealed Housing for Evaporative Determination) for a 25 minute, 7.5 mile trip on a hot summer day (95 deg F). Vehicles from model years 1971 through 1991 were tested. The program identified 30 vehicles as candidates for repair and retest. The result showed a very high (ca. 90%) effectiveness for the repairs. Repeat tests were run on 10 vehicles to provide an estimate for test-to-test variability.

  10. The gradient flow running coupling scheme

    E-Print Network [OSTI]

    Zoltan Fodor; Kieran Holland; Julius Kuti; Daniel Nogradi; Chik Him Wong

    2012-11-14T23:59:59.000Z

    The Yang-Mills gradient flow in finite volume is used to define a running coupling scheme. As our main result the discrete beta-function, or step scaling function, is calculated for scale change s=3/2 at several lattice spacings for SU(3) gauge theory coupled to N_f = 4 fundamental massless fermions. The continuum extrapolation is performed and agreement is found with the continuum perturbative results for small renormalized coupling. The case of SU(2) gauge group is briefly commented on.

  11. 06 Run 6-16-05.xls

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) - Energy Innovation Portal AdvancedUsing Artificial Barriers6Run

  12. Running River PLC | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to: navigation,Rolls RoyceRosaRowanRumbleRunning

  13. Running Jobs with the UGE Batch System

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs Quick Instructions for

  14. Acoustic grating fringe projector for high-speed and high-precision three-dimensional shape measurements

    SciTech Connect (OSTI)

    Yin Xuebing; Zhao Huijie; Zeng Junyu; Qu Yufu

    2007-05-20T23:59:59.000Z

    A new acoustic grating fringe projector (AGFP) was developed for high-speed and high-precision 3D measurement. A new acoustic grating fringe projection theory is also proposed to describe the optical system. The AGFP instrument can adjust the spatial phase and period of fringes with unprecedented speed and accuracy. Using rf power proportional-integral-derivative (PID) control and CCD synchronous control, we obtain fringes with fine sinusoidal characteristics and realize high-speed acquisition of image data. Using the device, we obtained a precise phase map for a 3D profile. In addition, the AGFP can work in running fringe mode, which could be applied in other measurement fields.

  15. Coal-fueled high-speed diesel engine development. Annual technical progress report, October 1990--September 1991

    SciTech Connect (OSTI)

    Not Available

    1991-11-01T23:59:59.000Z

    The objectives of this program are to study combustion feasibility by running Series 149 engine tests at high speeds with a fuel injection and combustion system designed for coal-water-slurry (CWS). The following criteria will be used to judge feasibility: (1) engine operation for sustained periods over the load range at speeds from 600 to 1900 rpm. The 149 engine for mine-haul trucks has a rated speed of 1900 rpm; (2) reasonable fuel economy and coal burnout rate; (3) reasonable cost of the engine design concept and CWS fuel compared to future oil prices.

  16. LCLS-scheduling-run_6_Ver4.xlsx

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

    AMO SXR XPP XCS CXI MEC Day 9 am - 9 pm Night 9 pm - 9 am Ver 3: CB 020112 LCLS Run 6 Schedule LCLS shutdown LCLS Approved Experiments for Run 6, June-December 2012...

  17. Long Run Macroeconomic Relations in the Global Economy

    E-Print Network [OSTI]

    Dees, S; Holly, Sean; Pesaran, M Hashem; Smith, L Vanessa

    This paper focuses on testing long run macroeconomic relations for interest rates, equity, prices and exchange rates within a model of the global economy. It considers a number of plausible long run relationships suggested by arbitrage in financial...

  18. Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private...

    Energy Savers [EERE]

    Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station November 6, 2013 - 12:00am Addthis...

  19. Mesoscale & Microscale Meteorological Division / NCAR WRF Nature Run

    E-Print Network [OSTI]

    Michalakes, John

    Mesoscale & Microscale Meteorological Division / NCAR WRF Nature Run John Michalakes Josh Hacker overview and petascale issues Nature run methodology Results and conclusion #12;Mesoscale & Microscale's atmosphere #12;Mesoscale & Microscale Meteorological Division / NCAR Description of Science · Kinetic energy

  20. Tachyonic Field Theory and Neutrino Mass Running

    E-Print Network [OSTI]

    U. D. Jentschura

    2012-05-01T23:59:59.000Z

    In this paper three things are done. (i) We investigate the analogues of Cerenkov radiation for the decay of a superluminal neutrino and calculate the Cerenkov angles for the emission of a photon through a W loop, and for a collinear electron-positron pair, assuming the tachyonic dispersion relation for the superluminal neutrino. The decay rate of a freely propagating neutrino is found to depend on the shape of the assumed dispersion relation, and is found to decrease with decreasing tachyonic mass of the neutrino. (ii) We discuss a few properties of the tachyonic Dirac equation (symmetries and plane-wave solutions), which may be relevant for the description of superluminal neutrinos seen by the OPERA experiment, and discuss the calculation of the tachyonic propagator. (iii) In the absence of a commonly accepted tachyonic field theory, and in view of an apparent "running" of the observed neutrino mass with the energy, we write down a model Lagrangian, which describes a Yukawa-type interaction of a neutrino coupling to a scalar background field via a scalar-minus-pseudoscalar interaction. This constitutes an extension of the standard model. If the interaction is strong, then it leads to a substantial renormalization-group "running" of the neutrino mass and could potentially explain the experimental observations.

  1. Universality of the Nf=2 Running Coupling

    E-Print Network [OSTI]

    K. Murano; S. Aoki; S. Takeda; Y. Taniguchi

    2009-03-06T23:59:59.000Z

    We investigate universality of the Nf=2 running coupling in the Sch\\"odinger functional scheme, by calculating the step scaling function in lattice QCD with the renorm alization group (RG) improved gauge action at both weak(u=0.9796) and strong(u=3.3340) couplings, where u=\\bar{g}^2_SF with \\bar{g}_SF being the running coupling in this scheme. In our main calculations, we use the tree-level value for O(a) improvement coefficients of boundary gauge fields. In addition we employ the 1-loop value for them in order to see how scaling behaviours are affected by them. In the continuum limit, the step scaling function obtained from the RG improved gauge actions agrees with the previous result obtained from the plaquette action within errors at both couplings, though errors of our result are larger. Combined fits using all data with the RG improved action as well as the plaquette action reduce errors in the continuum limit by 2% at the weak coupling and 22% at the strong coupling.

  2. DOE-2 sample run book: Version 2.1E

    SciTech Connect (OSTI)

    Winkelmann, F.C.; Birdsall, B.E.; Buhl, W.F.; Ellington, K.L.; Erdem, A.E. [Lawrence Berkeley Lab., CA (United States); Hirsch, J.J.; Gates, S. [Hirsch (James J.) and Associates, Camarillo, CA (United States)

    1993-11-01T23:59:59.000Z

    The DOE-2 Sample Run Book shows inputs and outputs for a variety of building and system types. The samples start with a simple structure and continue to a high-rise office building, a medical building, three small office buildings, a bar/lounge, a single-family residence, a small office building with daylighting, a single family residence with an attached sunspace, a ``parameterized`` building using input macros, and a metric input/output example. All of the samples use Chicago TRY weather. The main purpose of the Sample Run Book is instructional. It shows the relationship of LOADS-SYSTEMS-PLANT-ECONOMICS inputs, displays various input styles, and illustrates many of the basic and advanced features of the program. Many of the sample runs are preceded by a sketch of the building showing its general appearance and the zoning used in the input. In some cases we also show a 3-D rendering of the building as produced by the program DrawBDL. Descriptive material has been added as comments in the input itself. We find that a number of users have loaded these samples onto their editing systems and use them as ``templates`` for creating new inputs. Another way of using them would be to store various portions as files that can be read into the input using the {number_sign}{number_sign} include command, which is part of the Input Macro feature introduced in version DOE-2.lD. Note that the energy rate structures here are the same as in the DOE-2.lD samples, but have been rewritten using the new DOE-2.lE commands and keywords for ECONOMICS. The samples contained in this report are the same as those found on the DOE-2 release files. However, the output numbers that appear here may differ slightly from those obtained from the release files. The output on the release files can be used as a check set to compare results on your computer.

  3. Comparison of the Accuracy and Speed of Transient Mobile A/C System Simulation Models: Preprint

    SciTech Connect (OSTI)

    Kiss, T.; Lustbader, J.

    2014-03-01T23:59:59.000Z

    The operation of air conditioning (A/C) systems is a significant contributor to the total amount of fuel used by light- and heavy-duty vehicles. Therefore, continued improvement of the efficiency of these mobile A/C systems is important. Numerical simulation has been used to reduce the system development time and to improve the electronic controls, but numerical models that include highly detailed physics run slower than desired for carrying out vehicle-focused drive cycle-based system optimization. Therefore, faster models are needed even if some accuracy is sacrificed. In this study, a validated model with highly detailed physics, the 'Fully-Detailed' model, and two models with different levels of simplification, the 'Quasi-Transient' and the 'Mapped- Component' models, are compared. The Quasi-Transient model applies some simplifications compared to the Fully-Detailed model to allow faster model execution speeds. The Mapped-Component model is similar to the Quasi-Transient model except instead of detailed flow and heat transfer calculations in the heat exchangers, it uses lookup tables created with the Quasi-Transient model. All three models are set up to represent the same physical A/C system and the same electronic controls. Speed and results of the three model versions are compared for steady state and transient operation. Steady state simulated data are also compared to measured data. The results show that the Quasi-Transient and Mapped-Component models ran much faster than the Fully-Detailed model, on the order of 10- and 100-fold, respectively. They also adequately approach the results of the Fully-Detailed model for steady-state operation, and for drive cycle-based efficiency predictions

  4. Production-Run Software Failure Diagnosis via Hardware Performance Counters

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Production-Run Software Failure Diagnosis via Hardware Performance Counters Joy Arulraj Po and huge financial loss during production runs. Tools that diagnose production-run failures with low is sometimes over 100%, for concurrency-bug failure diagnosis and hence are not suitable for production

  5. Thermoacoustic tomography, variable sound speed Plamen Stefanov

    E-Print Network [OSTI]

    Stefanov, Plamen

    Thermoacoustic tomography, variable sound speed Plamen Stefanov Purdue University Based on a joint work with Gunther Uhlmann Plamen Stefanov (Purdue University ) Thermoacoustic tomography, variable sound speed 1 / 18 #12;Formulation Main Problem Thermoacoustic Tomography In thermoacoustic tomography

  6. Multi-functional foot use during running in the zebra-tailed lizard (Callisaurus draconoides)

    E-Print Network [OSTI]

    Chen Li; S. Tonia Hsieh; Daniel I. Goldman

    2013-03-29T23:59:59.000Z

    A diversity of animals that run on solid, level, flat, non-slip surfaces appear to bounce on their legs; elastic elements in the limbs can store and return energy during each step. The mechanics and energetics of running in natural terrain, particularly on surfaces that can yield and flow under stress, is less understood. The zebra-tailed lizard (Callisaurus draconoides), a small desert generalist with a large, elongate, tendinous hind foot, runs rapidly across a variety of natural substrates. We use high speed video to obtain detailed three-dimensional running kinematics on solid and granular surfaces to reveal how leg, foot, and substrate mechanics contribute to its high locomotor performance. Running at ~10 body length/s (~1 m/s), the center of mass oscillates like a spring-mass system on both substrates, with only 15% reduction in stride length on the granular surface. On the solid surface, a strut-spring model of the hind limb reveals that the hind foot saves about 40% of the mechanical work needed per step, significant for the lizard's small size. On the granular surface, a penetration force model and hypothesized subsurface foot rotation indicates that the hind foot paddles through fluidized granular medium, and that the energy lost per step during irreversible deformation of the substrate does not differ from the reduction in the mechanical energy of the center of mass. The upper hind leg muscles must perform three times as much mechanical work on the granular surface as on the solid surface to compensate for the greater energy lost within the foot and to the substrate.

  7. High speed optical quantum random number generation

    E-Print Network [OSTI]

    Weinfurter, Harald

    .3351 (2009). 6. I. Reidler, Y. Aviad, M. Rosenbluh, and I. Kanter, "Ultrahigh-speed random number generation

  8. DOE Booth Presentations From Grainger Show 2015

    Broader source: Energy.gov [DOE]

    DOE hosted its solid-state lighting informational booth February 16–18 at the annual Grainger Show in Orlando, FL. With over 17,000 attendees and over 750 exhibitors, the show gathered a wide range of Grainger customers—from universities to large hotel chains as well as Grainger team members to learn the latest about LED lighting.

  9. Effects of turbulence on power generation for variable-speed wind turbines

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Buhl, M.L. Jr.

    1996-11-01T23:59:59.000Z

    One of the primary advantages of variable-speed wind turbines over fixed-speed turbines should be improved aerodynamic efficiency. With variable-speed generation, in order to maintain a constant ratio of wind speed to tip speed, the wind turbine changes rotor speed as the wind speed changes. In this paper we compare a stall-controlled, variable-speed wind turbine to a fixed-speed turbine. The focus of this paper is to investigate the effects of variable speed on energy capture and its ability to control peak power. We also show the impact of turbulence on energy capture in moderate winds. In this report, we use a dynamic simulator to apply different winds to a wind turbine model. This model incorporates typical inertial and aerodynamic performance characteristics. From this study we found a control strategy that makes it possible to operate a stall-controlled turbine using variable speed to optimize energy capture and to control peak power. We also found that turbulence does not have a significant impact on energy capture.

  10. Channel coding for high speed links

    E-Print Network [OSTI]

    Blitvic, Natasa

    2008-01-01T23:59:59.000Z

    This thesis explores the benefit of channel coding for high-speed backplane or chip-to-chip interconnects, referred to as the high-speed links. Although both power-constrained and bandwidth-limited, the high-speed links ...

  11. Safety effects of barrier curb on high-speed suburban multilane highways

    E-Print Network [OSTI]

    Lienau, Krista Ann

    1994-01-01T23:59:59.000Z

    research. The appendices contain several pertinent graphs, programs and data used for analysis and are provided as reference material. CHAPTER H REVIEW OF LITERATURE The standard practice in roadway design is for form to follow function. Depending...-speed lane and no shoulder, run-off-the-road accidents may also increase. SAFETY It has been shown in past research that several roadway design and operational features have an effect on the accident experience of a roadway (5). These features include...

  12. The Nature of Running Penumbral Waves Revealed

    E-Print Network [OSTI]

    D. Shaun Bloomfield; Andreas Lagg; Sami K. Solanki

    2007-09-24T23:59:59.000Z

    We seek to clarify the nature of running penumbral (RP) waves: are they chromospheric trans-sunspot waves or a visual pattern of upward-propagating waves? Full Stokes spectropolarimetric time series of the photospheric Si I 10827 \\AA line and the chromospheric He I 10830 \\AA multiplet were inverted using a Milne-Eddington atmosphere. Spatial pixels were paired between the outer umbral/inner penumbral photosphere and the penumbral chromosphere using inclinations retrieved by the inversion and the dual-height pairings of line-of-sight velocity time series were studied for signatures of wave propagation using a Fourier phase difference analysis. The dispersion relation for radiatively cooling acoustic waves, modified to incorporate an inclined propagation direction, fits well the observed phase differences between the pairs of photospheric and chromospheric pixels. We have thus demonstrated that RP waves are in effect low-beta slow-mode waves propagating along the magnetic field.

  13. A (Running) Bolt for New Reasons

    E-Print Network [OSTI]

    Iosif Bena; Stefano Giusto; Clement Ruef; Nicholas P. Warner

    2009-12-15T23:59:59.000Z

    We construct a four-parameter family of smooth, horizonless, stationary solutions of ungauged five-dimensional supergravity by using the four-dimensional Euclidean Schwarzschild metric as a base space and "magnetizing" its bolt. We then generalize this to a five-parameter family based upon the Euclidean Kerr-Taub-Bolt. These "running Bolt" solutions are necessarily non-static. They also have the same charges and mass as a non-extremal black hole with a classically-large horizon area. Moreover, in a certain regime their mass can decrease as their charges increase. The existence of these solutions supports the idea that the singularities of non-extremal black holes are resolved by low-mass modes that correct the singularity of the classical black hole solution on large (horizon-sized) scales.

  14. ATLAS Distributed Computing in LHC Run2

    E-Print Network [OSTI]

    Campana, Simone; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS Distributed Computing infrastructure has evolved after the first period of LHC data taking in order to cope with the challenges of the upcoming LHC Run2. An increased data rate and computing demands of the Monte-Carlo simulation, as well as new approaches to ATLAS analysis, dictated a more dynamic workload management system (ProdSys2) and data management system (Rucio), overcoming the boundaries imposed by the design of the old computing model. In particular, the commissioning of new central computing system components was the core part of the migration toward the flexible computing model. The flexible computing utilization exploring the opportunistic resources such as HPC, cloud, and volunteer computing is embedded in the new computing model, the data access mechanisms have been enhanced with the remote access, and the network topology and performance is deeply integrated into the core of the system. Moreover a new data management strategy, based on defined lifetime for each dataset, has been defin...

  15. Better haul roads speed operations

    SciTech Connect (OSTI)

    Not Available

    1982-03-01T23:59:59.000Z

    Modern trucks and scrapers are manufactured to standards of increasingly larger size and degree of sophistication, and to get the greatest return in productivity it is necessary to have good haul roads. Good haul roads can reduce fuel consumption, increase vehicle speed, reduce wear and tear on machinery, and improve safety. The paper describes aspects of haul road maintenance, including levelling and repairing of the surface, reducing rolling resistance, super-elevating curves, eliminating reverse curves and controlling dust. The design of haul roads is also covered.

  16. Running Coupling Corrections to High Energy Inclusive Gluon Production

    E-Print Network [OSTI]

    W. A. Horowitz; Yuri V. Kovchegov

    2010-11-09T23:59:59.000Z

    We calculate running coupling corrections for the lowest-order gluon production cross section in high energy hadronic and nuclear scattering using the BLM scale-setting prescription. In the final answer for the cross section the three powers of fixed coupling are replaced by seven factors of running coupling, five in the numerator and two in the denominator, forming a 'septumvirate' of running couplings, analogous to the 'triumvirate' of running couplings found earlier for the small-x BFKL/BK/JIMWLK evolution equations. It is interesting to note that the two running couplings in the denominator of the 'septumvirate' run with complex-valued momentum scales, which are complex conjugates of each other, such that the production cross section is indeed real. We use our lowest-order result to conjecture how running coupling corrections may enter the full fixed-coupling kT-factorization formula for gluon production which includes non-linear small-x evolution.

  17. Threshold effects on renormalization group running of neutrino parameters in the low-scale seesaw model

    E-Print Network [OSTI]

    Johannes Bergstrom; Tommy Ohlsson; He Zhang

    2011-04-04T23:59:59.000Z

    We show that, in the low-scale type-I seesaw model, renormalization group running of neutrino parameters may lead to significant modifications of the leptonic mixing angles in view of so-called seesaw threshold effects. Especially, we derive analytical formulas for radiative corrections to neutrino parameters in crossing the different seesaw thresholds, and show that there may exist enhancement factors efficiently boosting the renormalization group running of the leptonic mixing angles. We find that, as a result of the seesaw threshold corrections to the leptonic mixing angles, various flavor symmetric mixing patterns (e.g., bi-maximal and tri-bimaximal mixing patterns) can be easily accommodated at relatively low energy scales, which is well within the reach of running and forthcoming experiments (e.g., the LHC).

  18. Dangerous Bodies: Freak Shows, Expression, and Exploitation

    E-Print Network [OSTI]

    Fordham, Brigham A.

    2007-01-01T23:59:59.000Z

    Dangerous Bodies: Freak Shows, Expression, and ExploitationR.I. GEN. LAWS § 11-9-1. DANGEROUS BODIES Rhode Island does161 Id. Id. 165 id. 166 Id. DANGEROUS BODIES This argument

  19. Electric-field-induced flame speed modification

    SciTech Connect (OSTI)

    Marcum, S.D. [Department of Physics, Miami University, Oxford, OH 45056 (United States); Ganguly, B.N. [Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 (United States)

    2005-10-01T23:59:59.000Z

    The effects of pulsed and continuous DC electric fields on the reaction zones of premixed propane-air flames have been investigated using several types of experimental measurements. All observed effects on the flame are dependent on the applied voltage polarity, indicating that negatively charged flame species do not play a role in the perturbation of the reaction zone. Experiments designed to characterize the electric-field-induced modifications of the shape and size of the inner cone, and the concomitant changes in the temperature profiles of flames with equivalence ratios between 0.8 and 1.7, are also reported. High-speed two-dimensional imaging of the flame response to a pulsed DC voltage shows that the unperturbed conical flame front (laminar flow) is driven into a wrinkled laminar flamelet (cellular) geometry on a time scale of the order of 5 ms. Temperature distributions derived from thin filament pyrometry (TFP) measurements in flames perturbed by continuous DC fields show similar large changes in the reaction zone geometry, with no change in maximum flame temperature. All measurements are consistent with the observed flame perturbations being a fluid mechanical response to the applied field brought about by forcing positive flame ions counter to the flow. The resulting electric pressure decreases Lewis numbers of the ionic species and drives the effective flame Lewis number below unity. The observed increases in flame speed and the flame fronts trend toward turbulence can be described in terms of the flame front wrinkling and concomitant increase in reaction sheet area. This effect is a potentially attractive means of controlling flame fluid mechanical characteristics. The observed effects require minimal input electrical power (<1 W for a 1 kW burner) due to the much better electric field coupling achieved in the present experiments compared to the previous studies.

  20. How occasional backstepping can speed up a processive motor protein

    E-Print Network [OSTI]

    M. Bier; F. J. Cao

    2008-04-13T23:59:59.000Z

    Fueled by the hydrolysis of ATP, the motor protein kinesin literally walks on two legs along the biopolymer microtubule. The number of accidental backsteps that kinesin takes appears to be much larger than what one would expect given the amount of free energy that ATP hydrolysis makes available. This is puzzling as more than a billion years of natural selection should have optimized the motor protein for its speed and efficiency. But more backstepping allows for the production of more entropy. Such entropy production will make free energy available. With this additional free energy, the catalytic cycle of the kinesin can be speeded up. We show how measured backstep percentages represent an optimum at which maximal net forward speed is achieved.

  1. MEASUREMENT OF WIND SPEED FROM COOLING LAKE THERMAL IMAGERY

    SciTech Connect (OSTI)

    Garrett, A; Robert Kurzeja, R; Eliel Villa-Aleman, E; Cary Tuckfield, C; Malcolm Pendergast, M

    2009-01-20T23:59:59.000Z

    The Savannah River National Laboratory (SRNL) collected thermal imagery and ground truth data at two commercial power plant cooling lakes to investigate the applicability of laboratory empirical correlations between surface heat flux and wind speed, and statistics derived from thermal imagery. SRNL demonstrated in a previous paper [1] that a linear relationship exists between the standard deviation of image temperature and surface heat flux. In this paper, SRNL will show that the skewness of the temperature distribution derived from cooling lake thermal images correlates with instantaneous wind speed measured at the same location. SRNL collected thermal imagery, surface meteorology and water temperatures from helicopters and boats at the Comanche Peak and H. B. Robinson nuclear power plant cooling lakes. SRNL found that decreasing skewness correlated with increasing wind speed, as was the case for the laboratory experiments. Simple linear and orthogonal regression models both explained about 50% of the variance in the skewness - wind speed plots. A nonlinear (logistic) regression model produced a better fit to the data, apparently because the thermal convection and resulting skewness are related to wind speed in a highly nonlinear way in nearly calm and in windy conditions.

  2. ATLAS Monte Carlo production Run-1 experience and readiness for Run-2 challenges

    E-Print Network [OSTI]

    Chapman, John Derek; The ATLAS collaboration; Garcia Navarro, Jose Enrique; Gwenlan, Claire; Mehlhase, Sascha; Tsulaia, Vakhtang; Vaniachine, Alexandre; Zhong, Jiahang; Pacheco Pages, Andres

    2015-01-01T23:59:59.000Z

    In this presentation we will review the ATLAS Monte Carlo production setup including the different production steps involved in full and fast detector simulation. A report on the Monte Carlo production campaigns during Run-I, Long Shutdown 1 (LS1) and status of the production for Run-2 will be presented. The presentation will include the details on various performance aspects. Important improvements in the workflow and software will be highlighted. Besides standard Monte Carlo production for data analyses at 7 and 8 TeV, the production accommodates for various specialised activities. These range from extended Monte Carlo validation, Geant4 validation, pileup simulation using zero bias data and production for various upgrade studies. The challenges of these activities will be discussed.

  3. Systematic approach for PID controller design for pitch-regulated, variable-speed wind turbines

    SciTech Connect (OSTI)

    Hand, M.M. [National Renewable Energy Lab., Golden, CO (United States); Balas, M.J. [Univ. of Colorado, Boulder, CO (United States). Dept. of Aerospace Engineering Sciences

    1997-11-01T23:59:59.000Z

    Variable-speed, horizontal axis wind turbines use blade-pitch control to meet specified objectives for three regions of operation. This paper focuses on controller design for the constant power production regime. A simple, rigid, non-linear turbine model was used to systematically perform trade-off studies between two performance metrics. Minimization of both the deviation of the rotor speed from the desired speed and the motion of the actuator is desired. The robust nature of the proportional-integral-derivative (PID) controller is illustrated, and optimal operating conditions are determined. Because numerous simulation runs may be completed in a short time, the relationship of the two opposing metrics is easily visualized. 2 refs., 9 figs.

  4. Variable-Speed Wind Turbine Controller Systematic Design Methodology: A Comparison of Non-Linear and Linear Model-Based Designs

    SciTech Connect (OSTI)

    Hand, M. M.

    1999-07-30T23:59:59.000Z

    Variable-speed, horizontal axis wind turbines use blade-pitch control to meet specified objectives for three regions of operation. This paper focuses on controller design for the constant power production regime. A simple, rigid, non-linear turbine model was used to systematically perform trade-off studies between two performance metrics. Minimization of both the deviation of the rotor speed from the desired speed and the motion of the actuator is desired. The robust nature of the proportional-integral-derivative (PID) controller is illustrated, and optimal operating conditions are determined. Because numerous simulation runs may be completed in a short time, the relationship of the two opposing metrics is easily visualized. Traditional controller design generally consists of linearizing a model about an operating point. This step was taken for two different operating points, and the systematic design approach was used. A comparison of the optimal regions selected using the n on-linear model and the two linear models shows similarities. The linearization point selection does, however, affect the turbine performance slightly. Exploitation of the simplicity of the model allows surfaces consisting of operation under a wide range of gain values to be created. This methodology provides a means of visually observing turbine performance based upon the two metrics chosen for this study. Design of a PID controller is simplified, and it is possible to ascertain the best possible combination of controller parameters. The wide, flat surfaces indicate that a PID controller is very robust in this variable-speed wind turbine application.

  5. Effects of Relativity Lead to"Warp Speed" Computations

    SciTech Connect (OSTI)

    Vay, J.-L.

    2007-11-01T23:59:59.000Z

    A scientist at Lawrence Berkeley National Laboratory has discovered that a previously unnoticed consequence of Einstein's special theory of relativity can lead to speedup of computer calculations by orders of magnitude when applied to the computer modeling of a certain class of physical systems. This new finding offers the possibility of tackling some problems in a much shorter time and with far more precision than was possible before, as well as studying some configurations in every detail for the first time. The basis of Einstein's theory is the principle of relativity, which states that the laws of physics are the same for all observers, whether the 'observer' is a turtle 'racing' with a rabbit, or a beam of particles moving at near light speed. From the invariance of the laws of physics, one may be tempted to infer that the complexity of a system is independent of the motion of the observer, and consequently, a computer simulation will require the same number of mathematical operations, independently of the reference frame that is used for the calculation. Length contraction and time dilation are well known consequences of the special theory of relativity which lead to very counterintuitive effects. An alien observing human activity through a telescope in a spaceship traveling in the Vicinity of the earth near the speed of light would see everything flattened in the direction of propagation of its spaceship (for him, the earth would have the shape of a pancake), while all motions on earth would appear extremely slow, slowed almost to a standstill. Conversely, a space scientist observing the alien through a telescope based on earth would see a flattened alien almost to a standstill in a flattened spaceship. Meanwhile, an astronaut sitting in a spaceship moving at some lower velocity than the alien spaceship with regard to earth might see both the alien spaceship and the earth flattened in the same proportion and the motion unfolding in each of them at the same speed. Let us now assume that each protagonist (the alien, the space scientist and the astronaut) is to run a computer simulation describing the motion of all of them in a single calculation. In order to model a physical system on a computer, scientists often divide space and time into small chunks. Since the computer must calculated some things for each chunk, having a large system containing numerous small chunks translates to long calculations requiring many computational steps on supercomputers. Let us assume that each protagonist of our intergalactic story uses the space and time slicing as described and chooses to perform the calculation in its own frame of reference. For the alien and the space scientist, the slicing of space and time results in an exceedingly large number of chunks, due to the wide disparity of spatial and time scales needed to describe both their own environment and motion together with the other extremely flattened environment and slowed motion. Since the disparity of scales is reduced for the astronaut, who is traveling at an intermediate velocity, the number of computer operations needed to complete the calculation in his frame of reference will be significantly lower, possibly by many orders of magnitude. Analogously, the new discovery at Lawrence Berkeley National Laboratory shows that there exists a frame of reference minimizing the number of computational operations needed for studying the interaction of beams of particles or light (lasers) interacting at, or near, light speed with other particles or with surrounding structures. Speedups ranging from ten to a million times or more are predicted for the modeling of beams interacting with electron clouds, such as those in the upcoming Large Hadron Collider 'atom smasher' accelerator at CERN (Switzerland), and in free electron lasers and tabletop laser wakefield accelerators. The discovery has surprised many physicists and was received initially with much skepticism. It sounded too much like a 'free lunch'. Yet, the demonstration of a speedup of a stunning one thousand times in a te

  6. Performance of the ATLAS Muon Trigger in Run I and Upgrades for Run II

    E-Print Network [OSTI]

    Kobayashi, Dai; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS experiment at the Large Hadron Collider (LHC) has taken data at a centre-of-mass energy between 900 GeV and 8 TeV during Run I (2009-2013). The LHC delivered an integrated luminosity of about 20fb-1 in 2012, which required dedicated strategies to guard the highest possible physics output while reducing effectively the event rate. The Muon High Level Trigger has successfully adapted to the changing environment of a low luminosity in 2010 to the luminosities encountered in 2012. The selection strategy has been optimized for the various physics analyses involving muons in the final state. We will present the excellent performance achieved during Run I. In preparation for the next data taking period (Run II) several hardware and software upgrades to the ATLAS Muon Trigger have been performed to deal with the increased trigger rate expected at higher center of mass energy and increased instantaneous luminosity. We will highlight the development of novel algorithms that have been developed to maintain a h...

  7. Performance of the ATLAS Muon Trigger in Run I and Upgrades for Run II

    E-Print Network [OSTI]

    Kobayashi, Dai; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS experiment at the Large Hadron Collider (LHC) has taken data at a centre-of-mass energy between 900 GeV and 8 TeV during Run I (2009-2013). The LHC delivered an integrated luminosity of about 20 fb?1 in 2012, which required dedicated strategies to guard the highest possible physics output while reducing effectively the event rate. The Muon High Level Trigger has successfully adapted to the changing environment of a low luminosity in 2010 to the luminosities encountered in 2012. The selection strategy has been optimized for the various physics analyses involving muons in the final state. We will present the excellent performance achieved during Run I. In preparation for the next data taking period (Run II) several hardware and software upgrades to the ATLAS Muon Trigger have been performed to deal with the increased trigger rate expected at higher center of mass energy and increased instantaneous luminosity. We will highlight the development of novel algorithms that have been developed to maintain ...

  8. An examination of loads and responses of a wind turbine undergoing variable-speed operation

    SciTech Connect (OSTI)

    Wright, A.D.; Buhl, M.L. Jr.; Bir, G.S.

    1996-11-01T23:59:59.000Z

    The National Renewable Energy Laboratory has recently developed the ability to predict turbine loads and responses for machines undergoing variable-speed operation. The wind industry has debated the potential benefits of operating wind turbine sat variable speeds for some time. Turbine system dynamic responses (structural response, resonance, and component interactions) are an important consideration for variable-speed operation of wind turbines. The authors have implemented simple, variable-speed control algorithms for both the FAST and ADAMS dynamics codes. The control algorithm is a simple one, allowing the turbine to track the optimum power coefficient (C{sub p}). The objective of this paper is to show turbine loads and responses for a particular two-bladed, teetering-hub, downwind turbine undergoing variable-speed operation. The authors examined the response of the machine to various turbulent wind inflow conditions. In addition, they compare the structural responses under fixed-speed and variable-speed operation. For this paper, they restrict their comparisons to those wind-speed ranges for which limiting power by some additional control strategy (blade pitch or aileron control, for example) is not necessary. The objective here is to develop a basic understanding of the differences in loads and responses between the fixed-speed and variable-speed operation of this wind turbine configuration.

  9. A conservative control strategy for variable-speed stall-regulated wind turbines

    SciTech Connect (OSTI)

    Muljadi, E.; Pierce, K.; Migliore, P.

    2000-02-08T23:59:59.000Z

    Simulation models of a variable-speed, fixed-pitch wind turbine were investigated to evaluate the feasibility of constraining rotor speed and power output without the benefit of active aerodynamic control devices. A strategy was postulated to control rotational speed by specifying the demanded generator torque. By controlling rotor speed in relation to wind speed, the aerodynamic power extracted by the blades from the wind was manipulated. Specifically, the blades were caused to stall in high winds. In low and moderate winds, the demanded generator torque and the resulting rotor speed were controlled to cause the wind turbine to operate near maximum efficiency. Using the developed models, simulations were conducted of operation in turbulent winds. Results indicated that rotor speed and power output were well regulated. Preliminary investigations of system dynamics showed that, compared to fixed-speed operation, variable-speed operation caused cyclic loading amplitude to be reduced for the turbine blades and low-speed shaft and slightly increased for the tower loads. This result suggests a favorable impact on fatigue life from implementation of the proposed control strategy.

  10. Running Amok in Labyrinthine Systems: The Cyber-Behaviorist Origins of Soft Torture

    E-Print Network [OSTI]

    Lemov, Rebecca

    2011-01-01T23:59:59.000Z

    About Us Search for: Shop Running Amok in LabyrinthineIntroduction: Systemic Risk Running Amok in Labyrinthinetenable, and there it was running in circles in an endless

  11. High speed sampler and demultiplexer

    DOE Patents [OSTI]

    McEwan, T.E.

    1995-12-26T23:59:59.000Z

    A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as ``strobe kickout``. The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition. 16 figs.

  12. High speed sampler and demultiplexer

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as "strobe kickout". The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition.

  13. Precipitate hydrolysis experimental facility (PHEF) Run 66 And 67, Final report

    SciTech Connect (OSTI)

    Shah, H. B.; Lambert, D. P.

    2000-02-11T23:59:59.000Z

    During the period from late June to early September of this year, approximately 1,600 gallons of precipitate feed stored in the Precipitate Hold Tank (PHT) at PHEF decomposed. This decomposition took place during a two month storage period of the Tetraphenyl borate (TPB) precipitate under a CO{sub 2} blanket. The visual inspection of the tank revealed that a very small amount of TPB solids were left and that there were approximately 100 to 110 gals of benzene/high boilers present in the tank. The resultant decomposition products in the PHT consist of an organic and aqueous phase containing a small quantity of unreacted solids. A path forward was developed to understand TPB decomposition and to determine if the material remaining in the PHT could be processed without adverse effects to the process or equipment. A small scale hydrolysis run with the remaining PHT material was made by Process Technology Development Group of DWPT at TNX. It was determined from small scale runs and an extensive analysis of the PHT material that the decomposed material was safe to run at PHEF without adversely affecting the process or equipment. The PHT volume was 1,592 gallons at the time of decomposition. Two runs (66 and 67) were performed to process the decomposed feed. The main objective of these runs was to process the decomposed precipitate from the PHT. In both the runs copper nitrate was used as the catalyst. Because of the decomposition, the effectiveness of the copper nitrate in catalyzing the destruction of TPB could not be completed. The significant findings of Run 66 are: (1) after 5 hours of aqueous boil, the aqueous product had a Diphenylamine (DPA) concentration of 31 mg/L and the Biphenyl concentration of 8 mg/L. At these concentrations, the high boiling organic mass in the aqueous product included 0.28 lbs of Diphenylamine and 0.07 lbs of Biphenyl. (2) Benzene production was 62.1 gallons, with an aromatic removal ratio of 96.26% as measured by liquid chromatography analysis. (3) The calculated reactor cooling coil heat transfer coefficient during cooldown was 244 (design basis = 80) PCU/ft{sup 2}/hr/C at 55 C. It took 90 minutes to cooldown the reactor contents at cooling water flowrate of 20 gpm and 168 RPM agitator speed. This suggested that minimal high boilers deposition had occurred with the processing of decomposed feed. (4) Phenylboronic Acid concentration dropped below 53 mg/L in less than 180 minutes. As such very little PBA was produced because of the decomposed feed. The Organic Evaporator (OE) cycle was completed in two attempts. In the first attempt, the OE run was interrupted due to a high Evaporator Condenser Decanter (ECD) vapor temperature interlock, approximately 18 minutes into the aqueous boil (AB). The cause of this interlock was determined to be fouling of the ECD tubes by high boiling organics. Several process changes were implemented in an attempt to defoul the condenser tubes. The changes were mainly targeted at running the condenser hot. The increase in CW supply temperature and reduction in CW flow helped to run the condenser hot, to increase the heat transfer efficiency and to melt the high boiling organics from the condenser tubes.

  14. Active control system for high speed windmills

    DOE Patents [OSTI]

    Avery, D.E.

    1988-01-12T23:59:59.000Z

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed. 4 figs.

  15. Active control system for high speed windmills

    DOE Patents [OSTI]

    Avery, Don E. (45-437 Akimala St., Honolulu, HI 96744)

    1988-01-01T23:59:59.000Z

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed.

  16. Early science runs prepare Sequoia for national security missions...

    National Nuclear Security Administration (NNSA)

    Early science runs prepare Sequoia for national security missions | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the...

  17. Running jobs error: "inet_arp_address_lookup"

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

    jobs error: "inetarpaddresslookup" Resolved: Running jobs error: "inetarpaddresslookup" September 22, 2013 by Helen He (0 Comments) Symptom: After the Hopper August 14...

  18. A new scheme for the running coupling constant in gauge theories using Wilson loops

    E-Print Network [OSTI]

    Erek Bilgici; Antonino Flachi; Etsuko Itou; Masafumi Kurachi; C. -J David Lin; Hideo Matsufuru; Hiroshi Ohki; Tetsuya Onogi; Takeshi Yamazaki

    2010-01-21T23:59:59.000Z

    We propose a new renormalization scheme of the running coupling constant in general gauge theories using the Wilson loops. The renormalized coupling constant is obtained from the Creutz ratio in lattice simulations and the corresponding perturbative coefficient at the leading order. The latter can be calculated by adopting the zeta-function resummation techniques. We perform a benchmark test of our scheme in quenched QCD with the plaquette gauge action. The running of the coupling constant is determined by applying the step-scaling procedure. Using several methods to improve the statistical accuracy, we show that the running coupling constant can be determined in a wide range of energy scales with relatively small number of gauge configurations.

  19. Tilt and running of cosmological observables in generalized single-field inflation

    SciTech Connect (OSTI)

    Bartolo, Nicola; Matarrese, Sabino [Dipartimento di Fisica ''G. Galilei'', Università degli Studi di Padova, via Marzolo 8, I-35131 Padova (Italy); Fasiello, Matteo [Dipartimento di Fisica ''G. Occhialini'', Università degli Studi di Milano Bicocca and INFN, Sezione di Milano Bicocca, Piazza della Scienza 3, I-20126 Milano (Italy); Riotto, Antonio, E-mail: nicola.bartolo@pd.infn.it, E-mail: matteo.fasiello@mib.infn.it, E-mail: sabino.matarrese@pd.infn.it, E-mail: riotto@mail.cern.ch [INFN, Sezione di Padova, via Marzolo 8, I-35131 Padova (Italy)

    2010-12-01T23:59:59.000Z

    Employing an effective field theory approach to inflationary perturbations, we analyze in detail the effect of curvature-generated Lagrangian operators on various observables, focusing on their running with scales. At quadratic order, we solve the equation of motion at next-to-leading leading order in a generalized slow-roll approximation for a very general theory of single-field inflation. We derive the resulting power spectrum, its tilt and running. We then focus on the contribution to the primordial non-Gaussianity amplitude f{sub NL} sourced by a specific interaction term. We show that the running of f{sub NL} can be substantially larger than what dictated by the slow-roll parameters.

  20. Running couplings and operator mixing in the gravitational corrections to coupling constants

    SciTech Connect (OSTI)

    Anber, Mohamed M. [Department of Physics, University of Toronto, Toronto, Ontario, M5S1A7 (Canada); Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States); Donoghue, John F. [Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States); El-Houssieny, Mohamed [Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States); Mathematics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo (Egypt)

    2011-06-15T23:59:59.000Z

    The use of a running coupling constant in renormalizable theories is well known, but the implementation of this idea for effective field theories with a dimensional coupling constant is, in general, less useful. Nevertheless, there are multiple attempts to define running couplings, including the effects of gravity, with varying conclusions. We sort through many of the issues involved, most particularly the idea of operator mixing and also the kinematics of crossing, using calculations in Yukawa and {lambda}{phi}{sup 4} theories as illustrative examples. We remain in the perturbative regime. In some theories with a high permutation symmetry, such as {lambda}{phi}{sup 4}, a reasonable running coupling can be defined. However, in most cases, such as Yukawa and gauge theories, a running coupling fails to correctly account for the energy dependence of the interaction strength. As a by-product we also contrast on-shell and off-shell renormalization schemes and show that operators which are normally discarded, such as those that vanish by the equations of motion, are required for off-shell renormalization of effective field theories. Our results suggest that the inclusion of gravity in the running of couplings is not useful or universal in the description of physical processes.

  1. All Order Running Coupling BFKL Evolution from GLAP (and vice-versa)

    E-Print Network [OSTI]

    Richard D. Ball; Stefano Forte

    2006-01-07T23:59:59.000Z

    We present a systematic formalism for the derivation of the kernel of the BFKL equation from that of the GLAP equation and conversely to any given order, with full inclusion of the running of the coupling. The running coupling is treated as an operator, reducing the inclusion of running coupling effects and their factorization to a purely algebraic problem. We show how the GLAP anomalous dimensions which resum large logs of x can be derived from the running-coupling BFKL kernel order by order, thereby obtaining a constructive all-order proof of small x factorization. We check this result by explicitly calculating the running coupling contributions to GLAP anomalous dimensions up to next-to-next-to leading order. We finally derive an explicit expression for BFKL kernels which resum large logs of Q^2 up to next-to-leading order from the corresponding GLAP kernels, thus making possible a consistent collinear improvement of the BFKL equation up to the same order.

  2. Detecting and Blocking Network Attacks at Ultra High Speeds

    SciTech Connect (OSTI)

    Paxson, Vern

    2010-11-29T23:59:59.000Z

    Stateful, in-depth, in-line traffic analysis for intrusion detection and prevention has grown increasingly more difficult as the data rates of modern networks rise. One point in the design space for high-performance network analysis - pursued by a number of commercial products - is the use of sophisticated custom hardware. For very high-speed processing, such systems often cast the entire analysis process in ASICs. This project pursued a different architectural approach, which we term Shunting. Shunting marries a conceptually quite simple hardware device with an Intrusion Prevention System (IPS) running on commodity PC hardware. The overall design goal is was to keep the hardware both cheap and readily scalable to future higher speeds, yet also retain the unparalleled flexibility that running the main IPS analysis in a full general-computing environment provides. The Shunting architecture we developed uses a simple in-line hardware element that maintains several large state tables indexed by packet header fields, including IP/TCP flags, source and destination IP addresses, and connection tuples. The tables yield decision values the element makes on a packet-by-packet basis: forward the packet, drop it, or divert ('shunt') it through the IPS (the default). By manipulating table entries, the IPS can, on a fine-grained basis: (i) specify the traffic it wishes to examine, (ii) directly block malicious traffic, and (iii) 'cut through' traffic streams once it has had an opportunity to 'vet' them, or (iv) skip over large items within a stream before proceeding to further analyze it. For the Shunting architecture to yield benefits, it needs to operate in an environment for which the monitored network traffic has the property that - after proper vetting - much of it can be safely skipped. This property does not universally hold. For example, if a bank needs to examine all Web traffic involving its servers for regulatory compliance, then a monitor in front of one of the bank's server farms cannot safely omit a subset of the traffic from analysis. In this environment, Shunting cannot realize its main performance benefits, and the monitoring task likely calls for using custom hardware instead. However, in many other environments we find Shunting holds promise for delivering major performance gains. This arises due to the the widely documented 'heavy tail' nature of most forms of network traffic, which we might express as 'a few of the connections carry just about all the bytes.' The key additional insight is '... and very often for these few large connections, the very beginning of the connection contains nearly all the information of interest from a security analysis perspective.' We argue that this second claim holds because it is at the beginning of connections that authentication exchanges occur, data or file names and types are specified, request and reply status codes conveyed, and encryption is negotiated. Once these occur, we have seen most of the interesting facets of the dialog. Certainly the remainder of the connection might also yield some grist for analysis, but this is generally less likely, and thus if we want to lower analysis load at as small a loss as possible of information relevant to security analysis, we might best do so by skipping the bulk of large connections. In a different context, the 'Time Machine' work by Kornexl and colleagues likewise shows that in some environments we can realize major reductions in the volume of network traffic processed, by limiting the processing to the first 10-20 KB of each connection. As a concrete example, consider an IPS that monitors SSH traffic. When a new SSH connection arrives and the Shunt fails to find an entry for it in any of its tables (per-address, per-port, per-connection), it executes the default action of diverting the connection through the IPS. The IPS analyzes the beginning of the connection in this fashion. As long as it is satisified with the dialog, it reinjects the packets forwarded to it so that the connection can continue. If the connection successfully

  3. Effect on Speed Distribution due to Intrusive and Non-Intrusive Portable Speed Measurement Devices

    E-Print Network [OSTI]

    Jasrotia, Romika

    2011-06-02T23:59:59.000Z

    , placing traffic signs, and determining the effectiveness of the countermeasures. To evaluate the effectiveness on speed distribution due to the presence of various intrusive and non-intrusive portable speed measurement devices, automated traffic counters...

  4. Running of scalar spectral index in multi-field inflation

    E-Print Network [OSTI]

    Jinn-Ouk Gong

    2015-05-20T23:59:59.000Z

    We compute the running of the scalar spectral index in general multi-field slow-roll inflation. By incorporating explicit momentum dependence at the moment of horizon crossing, we can find the running straightforwardly. At the same time, we can distinguish the contributions from the quasi de Sitter background and the super-horizon evolution of the field fluctuations.

  5. Mobile Museum Tours 1 RUNNING HEAD: MOBILE MUSEUM TOURS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mobile Museum Tours 1 RUNNING HEAD: MOBILE MUSEUM TOURS Using mobile technologies for multimedia MUSEUM TOURS Abstract Mobile technology was used to deliver learner-centred experiences to visitors: Across generations and cultures, Banff : Canada (2006)" #12;Mobile Museum Tours 2 RUNNING HEAD: MOBILE

  6. RIS-M-2471 RUN-OFF FROM ROOFS

    E-Print Network [OSTI]

    RISØ-M-2471 RUN-OFF FROM ROOFS Jørn Roed Abstract. In order to find the run-off from roof material a roof has been constructed with two different slopes (30° and 45°). Beryllium-7 and caesium-137 has been used as tracers. Considering new roof material the pollution removed by runoff processes has been shown

  7. Status of the CDF Run II Silicon Detector

    SciTech Connect (OSTI)

    S. Nahn

    2003-04-10T23:59:59.000Z

    A snapshot of the status of the CDF Run II Silicon Detector is presented, with a summary of commissioning issues since the start of Run II, current performance of the detector, and the use of the data in both the trigger and offline reconstruction.

  8. Running Coupling Corrections to Nonlinear Evolution for Diffractive Dissociation

    E-Print Network [OSTI]

    Yuri V. Kovchegov

    2011-12-12T23:59:59.000Z

    We determine running coupling corrections to the kernel of the non-linear evolution equation for the cross section of single diffractive dissociation in high energy DIS. The running coupling kernel for diffractive evolution is found to be exactly the same as the kernel of the rcBK evolution equation.

  9. Relationship between design speed and operating speed at horizontal curves on suburban arterials

    E-Print Network [OSTI]

    Shamburger, Carl Brian

    1995-01-01T23:59:59.000Z

    RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to the OIIice of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1995 Major Subject: Civil Engineering RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to Texas A&M University...

  10. Variable Speed Pumping for Level Control 

    E-Print Network [OSTI]

    Vasel, M.

    1982-01-01T23:59:59.000Z

    The purpose of this paper is to describe an application of variable speed pumping to level control of an industrial process. Topics include a comparison of the process using control valves with a variable speed system, an energy savings and cost...

  11. Processor Speed Control with Thermal Constraints

    E-Print Network [OSTI]

    Almir Mutapcic

    2007-09-29T23:59:59.000Z

    Sep 29, 2007 ... Processor Speed Control with Thermal Constraints ... and we model the dissipated power of a processor as a positive and strictly increasing ... speeds based on the measured temperatures in the system. ... Category 2: Applications -- Science and Engineering (Optimization of Systems modeled by PDEs ).

  12. Variable Speed Pumping for Level Control

    E-Print Network [OSTI]

    Vasel, M.

    1982-01-01T23:59:59.000Z

    The purpose of this paper is to describe an application of variable speed pumping to level control of an industrial process. Topics include a comparison of the process using control valves with a variable speed system, an energy savings and cost...

  13. Speed-line for 3D animation 

    E-Print Network [OSTI]

    Song, Won Chan

    2007-04-25T23:59:59.000Z

    My thesis describes a tool which creates speed-lines automatically in 3D computer animations. Speed-lines are usually used in comic books to express fast motions in a still image. They are also used in 2D animations. ...

  14. ATLAS Jet Trigger Performance in LHC Run I and Initial Run II Results

    E-Print Network [OSTI]

    Shimizu, Shima; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The immense rate of proton-proton collisions at the Large Hadron Collider (LHC) must be reduced from the nominal bunch-crossing rate of 40 MHz to approximately 1 kHz before the data can be written on disk offline. The ATLAS Trigger System performs real-time selection of these events in order to achieve this reduction. Dedicated selection of events containing jets is uniquely challenging at a hadron collider where nearly every event contains significant hadronic energy. Following the very successful first LHC run from 2010 to 2012, the ATLAS Trigger was much improved, including a new hardware topological module and a restructured High Level Trigger system, merging two previous software-based processing levels. This allowed the optimization of resources and a much greater re-use of the precise but costly offline software base. After summarising the overall performance of the jet trigger during the first LHC run, the software design choices and use of the topological module will be reviewed. The expected perform...

  15. Consistency between renormalization group running of chiral operator and counting rule -- Case of chiral pion production operator --

    E-Print Network [OSTI]

    Satoshi X. Nakamura; Anders Gardestig

    2009-11-10T23:59:59.000Z

    In nuclear chiral perturbation theory (ChPT), an operator is defined in a space with a cutoff which may be varied within a certain range. The operator runs as a result of the variation of the cutoff [renormalization group (RG) running]. In order for ChPT to be useful, the operator should run in a way consistent with the counting rule; that is, the running of chiral counter terms have to be of natural size. We vary the cutoff using the Wilsonian renormalization group (WRG) equation, and examine this consistency. As an example, we study the s-wave pion production operator for NN\\to d pi, derived in ChPT. We demonstrate that the WRG running does not generate any chiral-symmetry-violating (CSV) interaction, provided that we start with an operator which does not contain a CSV term. We analytically show how the counter terms are generated in the WRG running in case of the infinitesimal cutoff reduction. Based on the analytic result, we argue a range of the cutoff variation for which the running of the counter terms is of natural size. Then, we numerically confirm this.

  16. Planned search for LIGO-GBM coincidence in the first advanced LIGO data run

    E-Print Network [OSTI]

    Camp, Jordan; Briggs, Michael; Christensen, Nelson; Connaughton, Valerie; Singer, Leo; Shawhan, Peter; Veitch, John

    2015-01-01T23:59:59.000Z

    In the fall of 2015 the first scientific observing run (O1) of the advanced LIGO detectors will be conducted. Based on the recent commissioning progress at the LIGO Hanford and Livingston sites, the gravitational wave detector range for a neutron star binary inspiral is expected to be of order 60 Mpc. We describe here our planning for an O1 search for coincidence between a LIGO gravitational wave detection and a gamma-ray signal from the Fermi Gamma-ray Burst Monitor. Such a coincidence would constitute measurement of an electromagnetic counterpart to a gravitational wave signal, with significant corresponding scientific benefits, including revealing the central engine powering the gamma-ray burst, enhanced confidence in the event as a genuine astrophysical detection, and a determination of the relative speed of the photon and graviton.

  17. The effect of a protected area on the tradeoffs between short-run and long-run benefits from

    E-Print Network [OSTI]

    Gold, Art

    The effect of a protected area on the tradeoffs between short-run and long-run benefits from Board June 22, 2011 (received for review February 3, 2011) Protected areas are used to sustain biodiversity and ecosystem services. However, protected areas can create tradeoffs spatially and temporally

  18. A Machian Version of Einstein's Variable Speed of Light Theory

    E-Print Network [OSTI]

    Alexander Unzicker; Jan Preuss

    2015-03-28T23:59:59.000Z

    It is a little known fact that while he was developing his theory of general relativity, Einstein's initial idea was a variable speed of light theory. Indeed space-time curvature can be mimicked by a speed of light $c(r)$ that depends on the distribution of masses. Einstein's 1911 theory was considerably improved by Robert Dicke in 1957, but only recently has the equivalence of the variable speed of light approach to the conventional formalism been demonstrated (Broekaert, 2008). Using Green's functions, we show that Einstein's 1911 idea can be expressed in an analytic form, similar to the Poisson equation. Using heuristic arguments, we derive a simple formula that directly relates curvature $w$ to the local speed of light, $w= -c^2 \\Delta \\frac{1}{c^2}$. In contrast to the conventional formulation, this allows for a Machian interpretation of general relativity and the gravitational constant $G$. Gravity, though described by local equations, has its origin in all other masses in the universe.

  19. Higgs Boson in RG running Inflationary Cosmology

    E-Print Network [OSTI]

    Yi-Fu Cai; Damien A. Easson

    2013-01-07T23:59:59.000Z

    An intriguing hypothesis is that gravity may be non-perturbatively renormalizable via the notion of asymptotic safety. We show that the Higgs sector of the SM minimally coupled to asymptotically safe gravity can generate the observed near scale-invariant spectrum of the Cosmic Microwave Background through the curvaton mechanism. The resulting primordial power spectrum places an upper bound on the Higgs mass, which for finely tuned values of the curvaton parameters, is compatible with the recently released Large Hadron Collider data.

  20. Commissioning Run of the CRESST-II Dark Matter Search

    E-Print Network [OSTI]

    G. Angloher; M. Bauer; I. Bavykina; A. Bento; A. Brown; C. Bucci; C. Ciemniak; C. Coppi; G. Deuter; F. von Feilitzsch; D. Hauff; S. Henry; P. Huff; J. Imber; S. Ingleby; C. Isaila; J. Jochum; M. Kiefer; M. Kimmerle; H. Kraus; J. -C. Lanfranchi; R. F. Lang; B. Majorovits; M. Malek; R. McGowan; V. B. Mikhailik; E. Pantic; F. Petricca; S. Pfister; W. Potzel; F. Proebst; W. Rau; S. Roth; K. Rottler; C. Sailer; K. Schaeffner; J. Schmaler; S. Scholl; W. Seidel; L. Stodolsky; A. J. B. Tolhurst; I. Usherov; W. Westphal

    2009-02-16T23:59:59.000Z

    The CRESST cryogenic direct dark matter search at Gran Sasso, searching for WIMPs via nuclear recoil, has been upgraded to CRESST-II by several changes and improvements.We present the results of a commissioning run carried out in 2007. The basic element of CRESST-II is a detector module consisting of a large (~ 300 g) CaWO_4 crystal and a very sensitive smaller (~ 2 g) light detector to detect the scintillation light from the CaWO_4.Information from light-quenching factor studies allows the definition of a region of the energy-light yield plane which corresponds to tungsten recoils. A neutron test is reported which supports the principle of using the light yield to identify the recoiling nucleus. Data obtained with two detector modules for a total exposure of 48 kg-days are presented. Judging by the rate of events in the "all nuclear recoils" acceptance region the apparatus shows a factor ~ten improvement with respect to previous results, which we attribute principally to the presence of the neutron shield. In the "tungsten recoils" acceptance region three events are found, corresponding to a rate of 0.063 per kg-day. Standard assumptions on the dark matter flux, coherent or spin independent interactions,then yield a limit for WIMP-nucleon scattering of 4.8 \\times 10^{-7}pb, at M{WIMP} ~50 GeV.

  1. Long-run growth rate in a random multiplicative model

    E-Print Network [OSTI]

    Dan Pirjol

    2015-03-07T23:59:59.000Z

    We consider the long-run growth rate of the average value of a random multiplicative process $x_{i+1} = a_i x_i$ where the multipliers $a_i=1+\\rho\\exp(\\sigma W_i - \\frac12 \\sigma^2 t_i)$ have Markovian dependence given by the exponential of a standard Brownian motion $W_i$. The average value $\\langle x_n\\rangle$ is given by the grand partition function of a one-dimensional lattice gas with two-body linear attractive interactions placed in a uniform field. We study the Lyapunov exponent $\\lambda(\\rho,\\beta) = \\lim_{n\\to \\infty} \\frac{1}{n} \\log \\langle x_n\\rangle$ at fixed $\\beta = \\frac12 \\sigma^2 t_n n$, and show that it is given by the equation of state of the lattice gas in thermodynamical equilibrium. The Lyapunov exponent has discontinuous first derivatives along a curve in the $(\\rho,\\beta)$ plane ending at a critical point $(\\rho_C,\\beta_C)$, which is related to a phase transition in the equivalent lattice gas. Using the equivalence of the lattice gas with a bosonic system, we obtain the exact solution for the equation of state in the thermodynamical limit $n\\to \\infty$.

  2. Long-run growth rate in a random multiplicative model

    SciTech Connect (OSTI)

    Pirjol, Dan [Institute for Physics and Nuclear Engineering, 077125 Bucharest (Romania)

    2014-08-01T23:59:59.000Z

    We consider the long-run growth rate of the average value of a random multiplicative process x{sub i+1} = a{sub i}x{sub i} where the multipliers a{sub i}=1+?exp(?W{sub i}?1/2 ?²t{sub i}) have Markovian dependence given by the exponential of a standard Brownian motion W{sub i}. The average value (x{sub n}) is given by the grand partition function of a one-dimensional lattice gas with two-body linear attractive interactions placed in a uniform field. We study the Lyapunov exponent ?=lim{sub n??}1/n log(x{sub n}), at fixed ?=1/2 ?²t{sub n}n, and show that it is given by the equation of state of the lattice gas in thermodynamical equilibrium. The Lyapunov exponent has discontinuous partial derivatives along a curve in the (?, ?) plane ending at a critical point (?{sub C}, ?{sub C}) which is related to a phase transition in the equivalent lattice gas. Using the equivalence of the lattice gas with a bosonic system, we obtain the exact solution for the equation of state in the thermodynamical limit n ? ?.

  3. Preparations for p-Au run in 2015

    SciTech Connect (OSTI)

    Liu, C. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-12-31T23:59:59.000Z

    The p-Au particle collision is a unique category of collision runs. This is resulted from the different charge mass ratio of the proton and fully stripped Au ion (1 vs.79/197). The p-Au run requires a special acceleration ramp, and movement of a number of beam components as required by the beam trajectories. The DX magnets will be moved for the first time in the history of RHIC. In this note, the planning and preparations for p-Au run will be presented.

  4. Instrument Front-Ends at Fermilab During Run II

    SciTech Connect (OSTI)

    Meyer, Thomas; Slimmer, David; Voy, Duane; /Fermilab

    2011-07-13T23:59:59.000Z

    The optimization of an accelerator relies on the ability to monitor the behavior of the beam in an intelligent and timely fashion. The use of processor-driven front-ends allowed for the deployment of smart systems in the field for improved data collection and analysis during Run II. This paper describes the implementation of the two main systems used: National Instruments LabVIEW running on PCs, and WindRiver's VxWorks real-time operating system running in a VME crate processor.

  5. When can the Planck satellite measure spectral index running?

    E-Print Network [OSTI]

    Cédric Pahud; Andrew R. Liddle; Pia Mukherjee; David Parkinson

    2007-09-04T23:59:59.000Z

    We use model selection forecasting to assess the ability of the Planck satellite to make a positive detection of spectral index running. We simulate Planck data for a range of assumed cosmological parameter values, and carry out a three-way Bayesian model comparison of a Harrison-Zel'dovich model, a power-law model, and a model including running. We find that Planck will be able to strongly support running only if its true value satisfies |dn/d ln k| > 0.02.

  6. Validation of a blowby model using experimental results in motoring condition with the change of compression ratio and engine speed

    SciTech Connect (OSTI)

    Aghdam, E. Abdi [Department of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil (Iran); Kabir, M.M. [Department of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil (Iran); Department of Engineering, Islamic Azad University, Aliabad Katoul Branch, Golestan (Iran)

    2010-02-15T23:59:59.000Z

    Blowby and gas flow through the cylinder-piston-ring crevices are phenomena that affect the engine performance and exhaust emissions. Also these phenomena influence the cylinder pressure and temperature and the charge amount during a cycle. The study and validation of a sub-model for these phenomena in the absence of engine combustion deducts all effects arisen from the combustion event. During the current study, blowby sub-model and gas flow through crevices under motoring conditions has been noticed using a volume-orifice theory and the experimental results measured from a research engine. Blowby geometric parameters, consisting of a few critical cross-section areas (orifice areas) and volumes (top land and inter-ring crevice volumes), were measured in ambient temperature and corrected for hot running conditions. The cylinder pressure during cycle was measured by a piezoelectric pressure transducer and the low pressure parts of the cycle were measured using a piezoresistive pressure transducer for referencing purposes. The obtained results show a very good agreement between experimentally measured pressure data and model output for three compression ratios of 7.6, 10.2, 12.4 and three engine speeds of 750, 1500 and 2000 rpm, so that the maximum deviation was almost 5%. The model predicted that the maximum mass loss increased with increase of compression ratio and decreased with increase of engine speed. Also the peak mass loss position happened within the range of 3-9 CA after top dead center. After occurrence of the maximum loss, a reverse flow from the top land crevice into the cylinder was predicted in the model. (author)

  7. A simulation-based study of HighSpeed TCP and its deployment

    SciTech Connect (OSTI)

    Souza, Evandro de

    2003-04-29T23:59:59.000Z

    The current congestion control mechanism used in TCP has difficulty reaching full utilization on high speed links, particularly on wide-area connections. For example, the packet drop rate needed to fill a Gigabit pipe using the present TCP protocol is below the currently achievable fiber optic error rates. HighSpeed TCP was recently proposed as a modification of TCP's congestion control mechanism to allow it to achieve reasonable performance in high speed wide-area links. In this research, simulation results showing the performance of HighSpeed TCP and the impact of its use on the present implementation of TCP are presented. Network conditions including different degrees of congestion, different levels of loss rate, different degrees of bursty traffic and two distinct router queue management policies were simulated. The performance and fairness of HighSpeed TCP were compared to the existing TCP and solutions for bulk-data transfer using parallel streams.

  8. Run-time optimization of adaptive irregular applications

    E-Print Network [OSTI]

    Yu, Hao

    2004-11-15T23:59:59.000Z

    adaptive irregular applications for parallel execution, a common observation is that the effectiveness of the optimizing transformations depends on programs' input data and their dynamic phases. This dissertation presents a set of run-time optimization...

  9. Inventories and the short-run dynamics of commodity prices

    E-Print Network [OSTI]

    Pindyck, Robert S.

    1990-01-01T23:59:59.000Z

    I examine the behavior of inventories and their role in the short-run dynamics of commodity production and price. Competitive producers of a storable commodity react to price changes by balancing costs of changing production ...

  10. Running fermi with one-stage compressor: advantages, layout, performance

    E-Print Network [OSTI]

    Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

    2008-01-01T23:59:59.000Z

    Running FERMI with one-stage compressor: advantages, layout,a lattice with one-stage compressor, it was thought at thetime that the two bunch compressors configuration was still

  11. Second run of NIKA at the 30m telescope

    E-Print Network [OSTI]

    Leclercq, Samuel

    : ~�4 better than 1st run · Electronic: 2 Casper Roach Boards (230 MHz bandwidth), IRAM 1.5 GHz tests Electronics Based on 2 CASPER ROACH Boards from the Open Source project (development of 128

  12. Estimation of run times in a freight rail transportation network

    E-Print Network [OSTI]

    Bonsra, Kunal (Kunal Baldev)

    2012-01-01T23:59:59.000Z

    The objective of this thesis is to improve the accuracy of individual freight train run time predictions defined as the time between departure from an origin node to arrival at a destination node not including yard time. ...

  13. HOW TO RUN DARS AUDITS ON STUDENT WEB

    E-Print Network [OSTI]

    HOW TO RUN DARS AUDITS ON STUDENT WEB 1. Open a browser window 2. Enter this address: http on "Student Services & Financial Aid" 7. Click on "DARS" ­ Degree Audit Reporting System 8. Click on "Submit

  14. Running Coupling in SU(3) Yang-Mills Theory

    E-Print Network [OSTI]

    Ulli Wolff

    1993-11-23T23:59:59.000Z

    We report about our ongoing computation of running coupling constants in asymptotically free theories using the recursive finite size scaling technique. The latest results for the SU(3) Yang-Mills theory are presented.

  15. Exploiting run time distributions to compare sequential and parallel ...

    E-Print Network [OSTI]

    Isabel Rosseti,,,,

    target value within a given running time, shown on the abscissa axis. Time-to- .... Assuming that T2 ? T1, without loss of generality, we have that: Pr[X1 ? (? + ...

  16. Quantifying hurricane wind speed with undersea sound

    E-Print Network [OSTI]

    Wilson, Joshua David

    2006-01-01T23:59:59.000Z

    Hurricanes, powerful storms with wind speeds that can exceed 80 m/s, are one of the most destructive natural disasters known to man. While current satellite technology has made it possible to effectively detect and track ...

  17. Wind Speed Forecasting for Power System Operation 

    E-Print Network [OSTI]

    Zhu, Xinxin

    2013-07-22T23:59:59.000Z

    In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system...

  18. Wind Speed Forecasting for Power System Operation

    E-Print Network [OSTI]

    Zhu, Xinxin

    2013-07-22T23:59:59.000Z

    In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system...

  19. LHC(ATLAS, CMS, LHCb) Run 2 commissioning status

    E-Print Network [OSTI]

    Zimmermann, Stephanie; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    After a very successful run-1, the LHC accelerator and the LHC experiments had undergone intensive consolidation, maintenance and upgrade activities during the last 2 years in what has become known as Long-Shutdown-1 (LS1). LS1 ended in February this year, with beams back in the LHC since Easter. This talk will give a summary on the major shutdown activities of ATLAS, CMS and LHCb and review the status of commissioning for run-2 physics data taking.

  20. Running Coupling Effects in Small-x QCD

    E-Print Network [OSTI]

    D. N. Triantafyllopoulos

    2008-04-11T23:59:59.000Z

    We study effects of the running of the coupling in QCD at small Bjorken-x and in particular the ones related to gluon saturation. After introducing the steps taken to the derivation of the next to leading order nonlinear evolution equation, we discuss the infrared sensitivity of the Pomeron intercept, the energy dependence of the saturation momentum and the appearance of geometrical scaling, and the dominance of the running coupling effects over the ones introduced by loops of Pomerons.

  1. Preparing ATLAS reconstruction software for LHC's Run 2

    E-Print Network [OSTI]

    ATLAS Collaboration; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    In order to maximize the physics potential of the ATLAS detector during LHC's Run 2, the reconstruction software has been updated. Flat computing budgets required a factor of three improved run time, while the new xAOD data format forced changes in the reconstruction algorithms. Physics performance improvements have been made in the reconstruction of various objects, using improved techniques like multivariate discriminants, etc. This paper will present an overview of the improvements that have been made.

  2. Speeding-up Thorium decay

    E-Print Network [OSTI]

    F. Cardone; R. Mignani; A. Petrucci

    2007-10-26T23:59:59.000Z

    We show that cavitation of a solution of thorium-228 in water induces its transformation at a rate 10000 times faster than the natural radioactive decay would do. This result agrees with the alteration of the secular equilibrium of thorium-234 obtained by a Russian team via explosion of titanium foils in water and solutions. These evidences further support some preliminary clues for the possibility of piezonuclear reactions (namely nuclear reactions induced by pressure waves) obtained in the last ten years.

  3. Glass mixing theory and tracer study results from the SF-10 run

    SciTech Connect (OSTI)

    Bowman, B.W.; Routt, K.R.

    1988-08-01T23:59:59.000Z

    A general, partial differential equation governing glass mixing in the Slurry Fed Ceramic Melter (SFCM) was derived and a solution obtained based upon certain simplifying assumptions. Tracer studies were then conducted in the SFCM during the SF-10 run to test the theory and characterize glass mixing in this melter. Analysis of the tracer data shows that glass mixing in the SFCM can be explained by use of a model of two, well-mixed tanks in series.

  4. Energy Loss of Heavy Quarks in a QGP with a Running Coupling Constant Approach

    E-Print Network [OSTI]

    Pol B. Gossiaux; Joerg Aichelin

    2009-09-23T23:59:59.000Z

    We show that the effective running coupling constant, $\\alpha_{\\rm eff}$, and the effective regulator, $\\kappa \\tilde{m}_{D}^2$, which we used recently to calculate the energy loss, $\\frac{dE}{dx}$, and the elliptic flow, $v_2$, of heavy quarks in an expanding quark gluon plasma plasma (QGP) are compatible with lattice results and with recently advanced analytical pQCD calculation.

  5. Solving The High Energy Evolution Equation Including Running Coupling Corrections

    E-Print Network [OSTI]

    Javier L. Albacete; Yuri V. Kovchegov

    2007-06-22T23:59:59.000Z

    We study the solution of the nonlinear BK evolution equation with the recently calculated running coupling corrections [hep-ph/0609105, hep-ph/0609090]. Performing a numerical solution we confirm the earlier result of [hep-ph/0408216] that the high energy evolution with the running coupling leads to a universal scaling behavior for the dipole scattering amplitude. The running coupling corrections calculated recently significantly change the shape of the scaling function as compared to the fixed coupling case leading to a considerable increase in the anomalous dimension and to a slow-down of the evolution with rapidity. The difference between the two recent calculations is due to an extra contribution to the evolution kernel, referred to as the subtraction term, which arises when running coupling corrections are included. These subtraction terms were neglected in both recent calculations. We evaluate numerically the subtraction terms for both calculations, and demonstrate that when the subtraction terms are added back to the evolution kernels obtained in the two works the resulting dipole amplitudes agree with each other! We then use the complete running coupling kernel including the subtraction term to find the numerical solution of the resulting full non-linear evolution equation with the running coupling corrections. Again the scaling regime is recovered at very large rapidity.

  6. Measurement strategies for estimating long-term average wind speeds

    SciTech Connect (OSTI)

    Ramsdell, J.V.; Houston, S.; Wegley, H.L.

    1980-10-01T23:59:59.000Z

    The uncertainty and bias in estimates of long-term average wind speeds inherent in continuous and intermittent measurement strategies are examined by simulating the application of the strategies to 40 data sets. Continuous strategies have smaller uncertainties for fixed duration measurement programs, but intermittent strategies make more efficient use of instruments and have smaller uncertainties for a fixed amount of instrument use. Continuous strategies tend to give biased estimates of the long-term annual mean speed unless an integral number of years' data is collected or the measurement program exceeds 3 years in duration. Intermittent strategies with three or more month-long measurement periods per year do not show any tendency toward bias.

  7. Development of a high speed crowbar for LANSCE

    SciTech Connect (OSTI)

    Friedrichs, C. Jr.; Lyles, J.T.M.; Doub, J.M.

    1997-08-01T23:59:59.000Z

    Each of the four 200 MHz Final Power Amplifiers (FPAs) in the LANSCE proton linac has its own capacitor bank and crowbar. The dissipation in the 10{Omega} crowbar limiting resistor is as high as 67 kW, and oil cooling is used. The authors stated upgrade goal was to substantially reduce the limiting resistor dissipation and eliminate the oil cooling. Early tests showed that the fault energy quickly rose to unacceptable levels as the current limiting resistance was reduced. FPA arcs are normally quenched by interrupting the FPA modulator current, and the crowbar waits 10 {mu}s for this to occur. The successful upgrade strategy was to replace the 10{Omega} resistor with a 3{Omega} air cooled resistor and to add a high speed crowbar circuit which operates only if there are simultaneous arcs in the FPA and its modulator. This paper describes the high speed circuit and its interface with the existing crowbar. Test results are also given.

  8. Neutron Stars in a Varying Speed of Light Theory

    E-Print Network [OSTI]

    A. W. Whinnett

    2003-05-21T23:59:59.000Z

    We study neutron stars in a varying speed of light (VSL) theory of gravity in which the local speed of light depends upon the value of a scalar field $\\phi$. We find that the masses and radii of the stars are strongly dependent on the strength of the coupling between $\\phi$ and the matter field and that for certain choices of coupling parameters, the maximum neutron star mass can be arbitrarily small. We also discuss the phenomenon of cosmological evolution of VSL stars (analogous to the gravitational evolution in scalar-tensor theories) and we derive a relation showing how the fractional change in the energy of a star is related to the change in the cosmological value of the scalar field.

  9. A Multivariate Analysis of Freeway Speed and Headway Data

    E-Print Network [OSTI]

    Zou, Yajie

    2013-11-11T23:59:59.000Z

    key process is the generation of entry vehicle speeds and vehicle arrival times. It is helpful to find desirable mathematical distributions to model individual speed and headway values, because the individual vehicle speed and arrival time...

  10. Development Status of the PEBBLES Code for Pebble Mechanics: Improved Physical Models and Speed-up

    SciTech Connect (OSTI)

    Joshua J. Cogliati; Abderrafi M. Ougouag

    2009-12-01T23:59:59.000Z

    PEBBLES is a code for simulating the motion of all the pebbles in a pebble bed reactor. Since pebble bed reactors are packed randomly and not precisely placed, the location of the fuel elements in the reactor is not deterministically known. Instead, when determining operating parameters the motion of the pebbles can be simulated and stochastic locations can be found. The PEBBLES code can output information relevant for other simulations of the pebble bed reactors such as the positions of the pebbles in the reactor, packing fraction change in an earthquake, and velocity profiles created by recirculation. The goal for this level three milestone was to speedup the PEBBLES code through implementation on massively parallel computer. Work on this goal has resulted in speeding up both the single processor version and creation of a new parallel version of PEBBLES. Both the single processor version and the parallel running capability of the PEBBLES code have improved since the fiscal year start. The hybrid MPI/OpenMP PEBBLES version was created this year to run on the increasingly common cluster hardware profile that combines nodes with multiple processors that share memory and a cluster of nodes that are networked together. The OpenMP portions use the Open Multi-Processing shared memory parallel processing model to split the task across processors in a single node that shares memory. The Message Passing Interface (MPI) portion uses messages to communicate between different nodes over a network. The following are wall clock speed up for simulating an NGNP-600 sized reactor. The single processor version runs 1.5 times faster compared to the single processor version at the beginning of the fiscal year. This speedup is primarily due to the improved static friction model described in the report. When running on 64 processors, the new MPI/OpenMP hybrid version has a wall clock speed up of 22 times compared to the current single processor version. When using 88 processors, a speed up of 23 times is achieved. This speedup and other improvements of PEBBLES combine to make PEBBLES more capable and more useful for simulation of a pebble bed reactor. This report details the implementation and effects of the speedup work done over the course of the fiscal year.

  11. LHCb : LHCbVELO: Performance and Radiation Damage in LHC Run I and Preparationfor Run II

    E-Print Network [OSTI]

    Szumlak, Tomasz

    2015-01-01T23:59:59.000Z

    LHCb is a dedicated experiment to study New Physics in the decays of heavy hadrons at the Large Hadron Collider (LHC) at CERN. Heavy hadrons are identified through their flight distance in the Vertex Locator (VELO). The VELO comprises 42 modules made of two n+-on-n 300 um thick half-disc silicon sensors with R-measuring and Phi-measuring micro-strips. In order to allow retracting the detector, the VELO is installed as two movable halves containing 21 modules each. The detectors are operated in a secondary vacuum and are cooled by a bi-phase CO2 cooling system. During data taking in LHC Run 1 the LHCb VELO has operated with an extremely high efficiency and excellent performance. The track finding efficiency is typically greater than 98%. An impact parameter resolution of less than 35 um is achieved for particles with transverse momentum greater than 1 GeV/c. An overview of all important performance parameters will be given. The VELO sensors have received a large and non-uniform radiation dose of up to 1.2 x 10...

  12. Effect of Inhomogeneity and Unsteadiness on the Stability of High-Speed Shear Flows

    E-Print Network [OSTI]

    Bertsch, Rebecca Lynne

    2014-07-09T23:59:59.000Z

    . Experiments of high-speed mixing layers observed reduced production rates [1–3]. Computational studies of high-speed homogeneous shear flow performed by Sarkar [4] and Simone et Al. [5] conclude that compress- ibility has a ‘stabilizing’ effect on the growth...] show that the present RDT code captures the results of Simone et. al [5] very precisely. Most significantly, Lavin et al. [10] compare RDT anisotropy evolution of steady high-speed homogeneous shear with the DNS data of Sarkar [4] leading to reassuring...

  13. Residential Cold Climate Heat Pump with Variable-Speed Technology...

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

    Cold Climate Heat Pump with Variable-Speed Technology Residential Cold Climate Heat Pump with Variable-Speed Technology Purdue prototype system Purdue prototype system Unico...

  14. Energy Department Announces $10 Million to Speed Enhanced Geothermal...

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

    to Speed Enhanced Geothermal Systems into the Market Energy Department Announces 10 Million to Speed Enhanced Geothermal Systems into the Market February 24, 2014 - 11:46am...

  15. Variable Speed Pumping: A Guide to Successful Applications -...

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

    Variable Speed Pumping: A Guide to Successful Applications - Executive Summary Variable Speed Pumping: A Guide to Successful Applications - Executive Summary This document...

  16. Walking and running on yielding and fluidizing Feifei Qian1

    E-Print Network [OSTI]

    Fearing, Ron

    on a granular substrate of closely packed 3 mm diameter glass particles at speeds up to 50 cm/s (5 body length vehicles often have poor locomotor ability on granular substrates like sand and gravel. For example

  17. New screening software shows most recent large 16S rRNA gene clone libraries1 contain chimeras.2

    E-Print Network [OSTI]

    Jones, Antonia J.

    1 New screening software shows most recent large 16S rRNA gene clone libraries1 contain chimeras.2 3 Running title4 Detecting chimeras within 16S rRNA gene libraries.5 6 Authors7 Kevin E. Ashelford for screening entire 16S rRNA gene2 libraries, of up to 1,000 sequences, for chimeras and other artifacts

  18. Smaller Footprint Drilling System for Deep and Hard Rock Environments; Feasibility of Ultra-High-Speed Diamond Drilling

    SciTech Connect (OSTI)

    TerraTek, A Schlumberger Company

    2008-12-31T23:59:59.000Z

    The two phase program addresses long-term developments in deep well and hard rock drilling. TerraTek believes that significant improvements in drilling deep hard rock will be obtained by applying ultra-high rotational speeds (greater than 10,000 rpm). The work includes a feasibility of concept research effort aimed at development that will ultimately result in the ability to reliably drill 'faster and deeper' possibly with smaller, more mobile rigs. The principle focus is on demonstration testing of diamond bits rotating at speeds in excess of 10,000 rpm to achieve high rate of penetration (ROP) rock cutting with substantially lower inputs of energy and loads. The significance of the 'ultra-high rotary speed drilling system' is the ability to drill into rock at very low weights on bit and possibly lower energy levels. The drilling and coring industry today does not practice this technology. The highest rotary speed systems in oil field and mining drilling and coring today run less than 10,000 rpm - usually well below 5,000 rpm. This document provides the progress through two phases of the program entitled 'Smaller Footprint Drilling System for Deep and Hard Rock Environments: Feasibility of Ultra-High-Speed Diamond Drilling' for the period starting 30 June 2003 and concluding 31 March 2009. The accomplishments of Phases 1 and 2 are summarized as follows: (1) TerraTek reviewed applicable literature and documentation and convened a project kick-off meeting with Industry Advisors in attendance (see Black and Judzis); (2) TerraTek designed and planned Phase I bench scale experiments (See Black and Judzis). Improvements were made to the loading mechanism and the rotational speed monitoring instrumentation. New drill bit designs were developed to provided a more consistent product with consistent performance. A test matrix for the final core bit testing program was completed; (3) TerraTek concluded small-scale cutting performance tests; (4) Analysis of Phase 1 data indicated that there is decreased specific energy as the rotational speed increases; (5) Technology transfer, as part of Phase 1, was accomplished with technical presentations to the industry (see Judzis, Boucher, McCammon, and Black); (6) TerraTek prepared a design concept for the high speed drilling test stand, which was planned around the proposed high speed mud motor concept. Alternative drives for the test stand were explored; a high speed hydraulic motor concept was finally used; (7) The high speed system was modified to accommodate larger drill bits than originally planned; (8) Prototype mud turbine motors and the high speed test stand were used to drive the drill bits at high speed; (9) Three different rock types were used during the testing: Sierra White granite, Crab Orchard sandstone, and Colton sandstone. The drill bits used included diamond impregnated bits, a polycrystalline diamond compact (PDC) bit, a thermally stable PDC (TSP) bit, and a hybrid TSP and natural diamond bit; and (10) The drill bits were run at rotary speeds up to 5500 rpm and weight on bit (WOB) to 8000 lbf. During Phase 2, the ROP as measured in depth of cut per bit revolution generally increased with increased WOB. The performance was mixed with increased rotary speed, with the depth cut with the impregnated drill bit generally increasing and the TSP and hybrid TSP drill bits generally decreasing. The ROP in ft/hr generally increased with all bits with increased WOB and rotary speed. The mechanical specific energy generally improved (decreased) with increased WOB and was mixed with increased rotary speed.

  19. The Genetic Architecture of High Voluntary Wheel Running in House Mice

    E-Print Network [OSTI]

    Hannon, Robert Michael

    2010-01-01T23:59:59.000Z

    for high voluntary wheel running. J. Exper. Biol. 212, 238-A. , Garland, T. Jr. (2009). Running behavior and its energyfor high voluntary wheel-running. Behav. Genet. 31, 309-316.

  20. New Method and Reporting of Uncertainty in LBNL National Energy Modeling System Runs

    E-Print Network [OSTI]

    Gumerman, Etan Z.; LaCommare, Kristina Hamachi; Marnay, Chris

    2002-01-01T23:59:59.000Z

    GPRA Runs 3. Conclusion LBNL set out to establish a standarduncertainty into typical, LBNL-NEMS runs completed for GPRAwill be produced together with all future LBNL-NEMS runs.

  1. LIDAR Wind Speed Measurements of Evolving Wind Fields

    SciTech Connect (OSTI)

    Simley, E.; Pao, L. Y.

    2012-07-01T23:59:59.000Z

    Light Detection and Ranging (LIDAR) systems are able to measure the speed of incoming wind before it interacts with a wind turbine rotor. These preview wind measurements can be used in feedforward control systems designed to reduce turbine loads. However, the degree to which such preview-based control techniques can reduce loads by reacting to turbulence depends on how accurately the incoming wind field can be measured. Past studies have assumed Taylor's frozen turbulence hypothesis, which implies that turbulence remains unchanged as it advects downwind at the mean wind speed. With Taylor's hypothesis applied, the only source of wind speed measurement error is distortion caused by the LIDAR. This study introduces wind evolution, characterized by the longitudinal coherence of the wind, to LIDAR measurement simulations to create a more realistic measurement model. A simple model of wind evolution is applied to a frozen wind field used in previous studies to investigate the effects of varying the intensity of wind evolution. LIDAR measurements are also evaluated with a large eddy simulation of a stable boundary layer provided by the National Center for Atmospheric Research. Simulation results show the combined effects of LIDAR errors and wind evolution for realistic turbine-mounted LIDAR measurement scenarios.

  2. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P.

    1995-11-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy we analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. in extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  3. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States). Wind Technology Div.

    1996-10-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy analyzed uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  4. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States)

    1996-11-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up, and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy the authors analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  5. Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Savings

    SciTech Connect (OSTI)

    Hunt, A.; Easley, S.

    2012-05-01T23:59:59.000Z

    The report evaluates potential energy savings by replacing traditional single-speed pool pumps with variable speed pool pumps, and provide a basic cost comparison between continued uses of traditional pumps verses new pumps. A simple step-by-step process for inspecting the pool area and installing a new pool pump follows.

  6. Comments on Injector Proton Beam Study in Run 2014

    SciTech Connect (OSTI)

    Zhang, S. Y. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-09-15T23:59:59.000Z

    During the entire period of injector proton study in run 2014, it seems that the beam transverse emittance out of Booster is larger than that in run 2013. The emittance measured at the BtA transfer line and also the transmission from Booster late to AGS late are presented for this argument. In addition to this problem, it seems that the multiturn Booster injection, which defines the transverse emittance, needs more attention. Moreover, for high intensity operations, the space charge effect maybe already relevant in RHIC polarized proton runs. With the RHIC proton intensity improvement in the next several years, higher Booster input intensity is needed, therefore, the space charge effect at the Booster injection and early ramp may become a new limiting factor.

  7. 2013 CEF RUN - PHASE 1 DATA ANALYSIS AND MODEL VALIDATION

    SciTech Connect (OSTI)

    Choi, A.

    2014-05-08T23:59:59.000Z

    Phase 1 of the 2013 Cold cap Evaluation Furnace (CEF) test was completed on June 3, 2013 after a 5-day round-the-clock feeding and pouring operation. The main goal of the test was to characterize the CEF off-gas produced from a nitric-formic acid flowsheet feed and confirm whether the CEF platform is capable of producing scalable off-gas data necessary for the revision of the DWPF melter off-gas flammability model; the revised model will be used to define new safety controls on the key operating parameters for the nitric-glycolic acid flowsheet feeds including total organic carbon (TOC). Whether the CEF off-gas data were scalable for the purpose of predicting the potential flammability of the DWPF melter exhaust was determined by comparing the predicted H{sub 2} and CO concentrations using the current DWPF melter off-gas flammability model to those measured during Phase 1; data were deemed scalable if the calculated fractional conversions of TOC-to-H{sub 2} and TOC-to-CO at varying melter vapor space temperatures were found to trend and further bound the respective measured data with some margin of safety. Being scalable thus means that for a given feed chemistry the instantaneous flow rates of H{sub 2} and CO in the DWPF melter exhaust can be estimated with some degree of conservatism by multiplying those of the respective gases from a pilot-scale melter by the feed rate ratio. This report documents the results of the Phase 1 data analysis and the necessary calculations performed to determine the scalability of the CEF off-gas data. A total of six steady state runs were made during Phase 1 under non-bubbled conditions by varying the CEF vapor space temperature from near 700 to below 300°C, as measured in a thermowell (T{sub tw}). At each steady state temperature, the off-gas composition was monitored continuously for two hours using MS, GC, and FTIR in order to track mainly H{sub 2}, CO, CO{sub 2}, NO{sub x}, and organic gases such as CH{sub 4}. The standard deviation of the average vapor space temperature during each steady state ranged from 2 to 6°C; however, those of the measured off-gas data were much larger due to the inherent cold cap instabilities in the slurry-fed melters. In order to predict the off-gas composition at the sampling location downstream of the film cooler, the measured feed composition was charge-reconciled and input into the DWPF melter off-gas flammability model, which was then run under the conditions for each of the six Phase 1 steady states. In doing so, it was necessary to perform an overall heat/mass balance calculation from the melter to the Off-Gas Condensate Tank (OGCT) in order to estimate the rate of air inleakage as well as the true gas temperature in the CEF vapor space (T{sub gas}) during each steady state by taking into account the effects of thermal radiation on the measured temperature (T{sub tw}). The results of Phase 1 data analysis and subsequent model runs showed that the predicted concentrations of H{sub 2} and CO by the DWPF model correctly trended and further bounded the respective measured data in the CEF off-gas by over predicting the TOC-to-H{sub 2} and TOC-to-CO conversion ratios by a factor of 2 to 5; an exception was the 7X over prediction of the latter at T{sub gas} = 371°C but the impact of CO on the off-gas flammability potential is only minor compared to that of H{sub 2}. More importantly, the seemingly-excessive over prediction of the TOC-to-H{sub 2} conversion by a factor of 4 or higher at T{sub gas} < ~350°C was attributed to the conservative antifoam decomposition scheme added recently to the model and therefore is considered a modeling issue and not a design issue. At T{sub gas} > ~350°C, the predicted TOC-to-H{sub 2} conversions were closer to but still higher than the measured data by a factor of 2, which may be regarded as adequate from the safety margin standpoint. The heat/mass balance calculations also showed that the correlation between T{sub tw} and T{sub gas} in the CEF vapor space was close to that of the ½ scale SGM, whose data were ta

  8. Factors Associated with Hit-and-Run Pedestrian Fatalities and Driver Identification

    E-Print Network [OSTI]

    MacLeod, Kara E.; Griswold, Julia; Arnold, Lindsay S.; Ragland, David R

    2010-01-01T23:59:59.000Z

    Hit-and-run Crashes. Accident Analysis and Prevention, Vol.Circumstances and Drivers. Accident Analysis and Prevention,Hit-and-run Crashes. Accident Analysis and Prevention, Vol.

  9. A Test to Verify the Speed Change of Light in the Gravitational Field of the Earth

    E-Print Network [OSTI]

    Mei Xiaochun

    2006-12-03T23:59:59.000Z

    Based on the Schwarzschild solution of the Einstein equation of gravitational field, it is proved that the speed of light speed would change and isotropy of light speed would be violated in gravitational field with spherical symmetry. On the surface of the earth, the speed of light vertical to the surface is 0.2m/s less than that parallel to the surface. It is suggested to use the method of the Michelson Morley interference to verify the change of light speed and the violation of isotropy in the gravitational field of the earth. In the proposed experiment, one arm of interferometer is vertical to the earth surface while another is parallel to the surface. When two arms are turned over 90 degree, the shift of about 0.07 interference stripe would be caused which can be observed directly. So this experiment can be considered as a new verification for general relativity in the gravitational field with spherical symmetry. If the experiment shows that gravitation would change the speed of light and violate the isotropy of light speed, the result would cause great effects on foundational physics, astrophysics and cosmolo

  10. Pattern speed evolution and bar reformation

    E-Print Network [OSTI]

    F. Combes

    2008-11-05T23:59:59.000Z

    Bars in spiral galaxies can weaken through gas inflow towards the center, and angular momentum transfer. Several bar episodes can follow one another in the life of the galaxy, if sufficient gas is accreted from the intergalactic medium to revive young disks. Pattern speeds of the successive bars are different, due to mass concentration, or increased velocity dispersion of the remaining stellar component. In the same time, the spiral galaxy evolves in morphological type. Numerical simulations are presented, trying to correlate type and bar pattern speeds.

  11. A microprocessor-based run-time I/0 processor

    E-Print Network [OSTI]

    White, Steven Wayne

    1979-01-01T23:59:59.000Z

    A MICROPROCESSOR-BASED RUN-TIME I/O PROCESSOR A Thesis by STEVEN WAYNE WHITE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1979 Major... Subject: Electrical Engineering A MICROPROCESSOR-BASED RUN-TIME I/O PROCESSOR A Thesis by STEVEN WAYNE WHITE Approved as to style and content by: (Chairman of Commit ee) (Co-chai rman of Committee) (Member) (Member) (He of Dep rtment) December...

  12. Measurement of the Running of the Electromagnetic Coupling at LEP

    E-Print Network [OSTI]

    Salvatore Mele

    2006-01-30T23:59:59.000Z

    The study of low-angle and large-angle Bhabha scattering at LEP gives access to the running of the electromagnetic coupling. Two recent measurements of the OPAL and L3 collaborations probe the running of alpha in the regions 1.8GeV^2<-Q^2<6.1GeV^2 and 1800GeV^2 <-Q^2 <21600GeV^2, respectively. The strategies and the results of these studies are presented. A global overview is given of the agreement of these and previous L3 findings with the QED predictions.

  13. Regularization Dependence of Running Couplings in Softly Broken Supersymmetry

    E-Print Network [OSTI]

    Stephen P. Martin; Michael T. Vaughn

    2008-07-24T23:59:59.000Z

    We discuss the dependence of running couplings on the choice of regularization method in a general softly-broken N=1 supersymmetric theory. Regularization by dimensional reduction respects supersymmetry, but standard dimensional regularization does not. We find expressions for the differences between running couplings in the modified minimal subtraction schemes of these two regularization methods, to one loop order. We also find the two-loop renormalization group equations for gaugino masses in both schemes, and discuss the application of these results to the Minimal Supersymmetric Standard Model.

  14. The gradient flow running coupling with twisted boundary conditions

    E-Print Network [OSTI]

    A. Ramos

    2014-09-04T23:59:59.000Z

    We study the gradient flow for Yang-Mills theories with twisted boundary conditions. The perturbative behavior of the energy density $\\langle E(t)\\rangle$ is used to define a running coupling at a scale given by the linear size of the finite volume box. We compute the non-perturbative running of the pure gauge $SU(2)$ coupling constant and conclude that the technique is well suited for further applications due to the relatively mild cutoff effects of the step scaling function and the high numerical precision that can be achieved in lattice simulations. We also comment on the inclusion of matter fields.

  15. Fast Bunch Integrators at Fermilab During Run II

    SciTech Connect (OSTI)

    Meyer, Thomas; Briegel, Charles; Fellenz, Brian; Vogel, Greg; /Fermilab

    2011-07-13T23:59:59.000Z

    The Fast Bunch Integrator is a bunch intensity monitor designed around the measurements made from Resistive Wall Current Monitors. During the Run II period these were used in both Tevatron and Main Injector for single and multiple bunch intensity measurements. This paper presents an overview of the design and use of these systems during this period. During the Run II era the Fast Bunch integrators have found a multitude of uses. From antiproton transfers to muti-bunch beam coalescing, Main Injector transfers to halo scraping and lifetime measurements, the Fast Bunch Integrators have proved invaluable in the creation and maintenance of Colliding Beams stores at Fermilab.

  16. Analysis of failed ramps during the RHIC FY09 run

    SciTech Connect (OSTI)

    Minty, M. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-08-15T23:59:59.000Z

    The Relativistic Heavy Ion Collider (RHIC) is a versatile accelerator that supports operation with polarized protons of up to 250 GeV and ions with up to 100 GeV/nucleon. During any running period, various operating scenarios with different particle species, beam energies or accelerator optics are commissioned. In this report the beam commissioning periods for establishing full energy beams (ramp development periods) from the FY09 run are summarized and, for the purpose of motivating further developments, we analyze the reasons for all failed ramps.

  17. Overview of PHENIX Results from the First RHIC Run

    E-Print Network [OSTI]

    W. A. Zajc; for the PHENIX Collaboration

    2001-06-01T23:59:59.000Z

    Results from the PHENIX experiment for the first RHIC run with Au-Au collisions at a nucleon-nucleon center-of-mass energy of 130 GeV are presented. The systematic variation with centrality of charged particle multiplicity, transverse energy, elliptic flow, identified particle spectra and yield ratios, and production of charged particles and neutral pions at high transverse momenta are presented. Results on two-pion correlations and electron spectra are also provided, along with a discussion of plans for the second run at RHIC.

  18. CRYOPUMP MEASUREMENTS RELATING TO SAFETY, PUMPING SPEED, AND RADIATION OUTGASSING

    E-Print Network [OSTI]

    Graham, W.G.

    2011-01-01T23:59:59.000Z

    Fast Gas Pulse Typical Data for Dynamic Pumping Speed Measurements with Deuterium Plan View of Reactor

  19. RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France)

    E-Print Network [OSTI]

    Fouke, Bruce W.

    1 RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France) and their Sequence Stratigraphic carbonate platform (SE France), shows that the most prominent break in depositional style does not coincide

  20. Low dose tomographic fluoroscopy: 4D intervention guidance with running prior

    SciTech Connect (OSTI)

    Flach, Barbara; Kuntz, Jan; Brehm, Marcus; Kachelrieß, Marc [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany and Institute of Medical Physics, Friedrich–Alexander–University (FAU) of Erlangen–Nürnberg, Henkestraße 91, 91052 Erlangen (Germany)] [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany and Institute of Medical Physics, Friedrich–Alexander–University (FAU) of Erlangen–Nürnberg, Henkestraße 91, 91052 Erlangen (Germany); Kueres, Rolf [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg (Germany)] [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg (Germany); Bartling, Sönke [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany and Institute for Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Theodor–Kutzer–Ufer 1–3, 68167 Mannheim (Germany)] [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany and Institute for Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Theodor–Kutzer–Ufer 1–3, 68167 Mannheim (Germany)

    2013-10-15T23:59:59.000Z

    Purpose: Today's standard imaging technique in interventional radiology is the single- or biplane x-ray fluoroscopy which delivers 2D projection images as a function of time (2D+T). This state-of-the-art technology, however, suffers from its projective nature and is limited by the superposition of the patient's anatomy. Temporally resolved tomographic volumes (3D+T) would significantly improve the visualization of complex structures. A continuous tomographic data acquisition, if carried out with today's technology, would yield an excessive patient dose. Recently the authors proposed a method that enables tomographic fluoroscopy at the same dose level as projective fluoroscopy which means that if scanning time of an intervention guided by projective fluoroscopy is the same as that of an intervention guided by tomographic fluoroscopy, almost the same dose is administered to the patient. The purpose of this work is to extend authors' previous work and allow for patient motion during the intervention.Methods: The authors propose the running prior technique for adaptation of a prior image. This adaptation is realized by a combination of registration and projection replacement. In a first step the prior is deformed to the current position via affine and deformable registration. Then the information from outdated projections is replaced by newly acquired projections using forward and backprojection steps. The thus adapted volume is the running prior. The proposed method is validated by simulated as well as measured data. To investigate motion during intervention a moving head phantom was simulated. Real in vivo data of a pig are acquired by a prototype CT system consisting of a flat detector and a continuously rotating clinical gantry.Results: With the running prior technique it is possible to correct for motion without additional dose. For an application in intervention guidance both steps of the running prior technique, registration and replacement, are necessary. Reconstructed volumes based on the running prior show high image quality without introducing new artifacts and the interventional materials are displayed at the correct position.Conclusions: The running prior improves the robustness of low dose 3D+T intervention guidance toward intended or unintended patient motion.

  1. PERCEIVED SPEED INCREASES AT LOW LUMINANCE

    E-Print Network [OSTI]

    Pashkam, Maryam Vaziri

    PERCEIVED SPEED INCREASES AT LOW LUMINANCE Maryam Vaziri-Pashkam, Patrick Cavanagh Vision Sciences Laboratory, Department of Psychology, Harvard University Discussion Does changing the mean luminance is increased as the mean luminance of the grating decreases. Conclusion First Experiment: Stimuli were radial

  2. Detour : Los Angeles River Speed Cinema

    E-Print Network [OSTI]

    Lee, Weifeng Victoria

    2010-01-01T23:59:59.000Z

    We live in the culture of speed; everything is on its way to become a faster version of itself tomorrow if it is not already there today. Automobile and cinema are two inventions at the turn of the 20th Century that brought ...

  3. Running Head: TESTOSTERONE AND POWER Testosterone and power

    E-Print Network [OSTI]

    Schultheiss, Oliver C.

    Running Head: TESTOSTERONE AND POWER Testosterone and power Steven J. Stanton and Oliver C. Schultheiss University of Michigan, Ann Arbor, MI, USA To appear in: K. Dowding (Ed.), Encyclopedia of power-647-9440, email: stantons@umich.edu #12;Testosterone and power 2 Across many studies in humans, two functional

  4. Models at Run-time for Sustaining User Interface Plasticity

    E-Print Network [OSTI]

    that is described in section 2. Section 4 opens the paper on a research agenda. 2. RUNNING EXAMPLE "Sedan-Bouillon" is a web site that aims at promoting tourism in the regions of Sedan and Bouillon in France and Belgium (http://www.bouillon-sedan.com/). Initially, the web site has been designed for PC screens only

  5. Optimizing Marshalling by Run-Time Program Generation

    E-Print Network [OSTI]

    Kamin, Sam

    Optimizing Marshalling by Run-Time Program Generation Bari¸s Aktemur1 , Joel Jones2 , Samuel Kamin1. Saving the internal data of an application in an external form is called marshalling. A generic marshaller is difficult to optimize because the format of the data that will be marshalled is unknown

  6. Running Nuprl 5 3.1 System Requirements

    E-Print Network [OSTI]

    , but uses some extensions that require Lucid, Allegro or LCMU Common Lisp and a Unix-based X window system with smaller memory footprint but currently Allegro is a bit more stable. The Nuprl homepage provides an executable copies of the CMUCL version of Nuprl 5 running under Linux. Executable copies for Allegro can

  7. IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES

    E-Print Network [OSTI]

    Zacks, Jeffrey M.

    IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES Imagined Transformations TRANSFORMATIONS 2 Abstract A number of spatial reasoning problems can be solved by performing an imagined transformation of one's egocentric perspective. A series of experiments were carried out to characterize

  8. LEARNING BY DOING: A STUDENT RUN CONSTRUCTION PROJECT

    E-Print Network [OSTI]

    Schweik, Charles M.

    LEARNING BY DOING: A STUDENT RUN CONSTRUCTION PROJECT #12;PROJECT BREAKDOWN 1.) DESIGN PROCESS 2 Breakdown · Construction Drawings · Structural Beam Reports · State Required Energy Report TECHNOLOGY USED _________________________________________________________ 1 Set of 8 ½" x 11" Prints 1 Copy of Energy Report 1 Set of Structural Beam Reports #12;BEAM REPORT

  9. Volume VI, Chapter 2 Run Reconstructions of Select

    E-Print Network [OSTI]

    : Coweeman tule fall chinook, East Fork Lewis tule fall chinook, North Fork Lewis bright fall chinook, Wind, Wind summer steelhead, and Grays chum. These populations were selected because they represent a mixture of the ratio of recruits to spawners, in the absence of density dependent mortality (Neave 1953). Run

  10. Achieving Bipedal Running with RABBIT: Six Steps toward Infinity

    E-Print Network [OSTI]

    Grizzle, Jessy W.

    Laboratory, Department of Mechanical Engineering, The Ohio State University, Columbus, Ohio 43210, USA running steps. These steps were notably human-like, having a long stride length (approx. 50 cm or 36 been used to experimentally verify a mathematical framework for the systematic de- sign, analysis

  11. Power Systems Development Facility Gasification Test Run TC11

    SciTech Connect (OSTI)

    Southern Company Services

    2003-04-30T23:59:59.000Z

    This report discusses Test Campaign TC11 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). Test run TC11 began on April 7, 2003, with startup of the main air compressor and the lighting of the gasifier start-up burner. The Transport Gasifier operated until April 18, 2003, when a gasifier upset forced the termination of the test run. Over the course of the entire test run, gasifier temperatures varied between 1,650 and 1,800 F at pressures from 160 to 200 psig during air-blown operations and around 135 psig during enriched-air operations. Due to a restriction in the oxygen-fed lower mixing zone (LMZ), the majority of the test run featured air-blown operations.

  12. HOW TO RUN A ROACH YULIY BARYSHNIKOV AND BORIS SHAPIRO

    E-Print Network [OSTI]

    Shapiro, Boris

    HOW TO RUN A ROACH YULIY BARYSHNIKOV AND BORIS SHAPIRO Abstract. In this paper we study the topology of the configura- tion space of a device with d legs (alias 'roach') such that at most k of them are allowed to be off the ground. We suggest control strategies providing that this roach moves stably forward

  13. The long-run evolution of energy prices

    E-Print Network [OSTI]

    Pindyck, Robert S.

    1999-01-01T23:59:59.000Z

    I examine the long-run behavior of oil, coal, and natural gas prices, using up to 127 years of data, and address the following questions: What does over a century of data tell us about the stochastic dynamics of price ...

  14. D0 status and first results from Run II

    SciTech Connect (OSTI)

    Aurelio Juste

    2004-01-12T23:59:59.000Z

    In order to fully exploit the physics potential of the Tevatron Run 2, the D0 detector has been upgraded. Having nearly completed the commissioning phase, the D0 detector is starting to produce its first physics results. An overview of the status of the main subdetectors involved in the upgrade is given, followed by some examples of preliminary physics results already emerging.

  15. The running coupling of QCD with four flavors

    E-Print Network [OSTI]

    Fatih Tekin; Rainer Sommer; Ulli Wolff

    2010-06-03T23:59:59.000Z

    We have calculated the step scaling function and the running coupling of QCD in the Schroedinger functional scheme with four flavors of O(a) improved Wilson quarks. Comparisons of our non-perturbative results with 2-loop and 3-loop perturbation theory as well as with non-perturbative data for only two flavors are made.

  16. Pomeron with a running coupling in the nucleus

    E-Print Network [OSTI]

    M. A. Braun

    2007-03-09T23:59:59.000Z

    The running coupling is introduced into the equation for propagation of the pomeron in the nucleus via the bootstrap relation. The resulting equation coincides with the one obtained in the colour dipole formalism by summing contributions from quark-antiquark loops, with a general choice of the regularization scheme.

  17. Running Scaling Dimensions in Holographic Renormalization Group Flows

    E-Print Network [OSTI]

    Wolfgang Mueck

    2010-06-15T23:59:59.000Z

    Holographic renormalization group flows can be interpreted in terms of effective field theory. Based on such an interpretation, a formula for the running scaling dimensions of gauge-invariant operators along such flows is proposed. The formula is checked for some simple examples from the AdS/CFT correspondence, but can be applied also in non-AdS/non-CFT cases.

  18. RpA ratio: total shadowing due to running coupling

    E-Print Network [OSTI]

    E. Iancu; D. N. Triantafyllopoulos

    2007-07-02T23:59:59.000Z

    We predict that the RpA ratio at the most forward rapidities to be measured at LHC should be strongly suppressed, close to "total shadowing'' (RpA = A^(-1/3)), as a consequence of running coupling effects in the nonlinear QCD evolution.

  19. Running coupling in SU(2) with adjoint fermions

    E-Print Network [OSTI]

    Jarno Rantaharju; Kari Rummukainen; Kimmo Tuominen

    2013-01-11T23:59:59.000Z

    We present a measurement of the Schr\\"odinger Functional running coupling in SU(2) lattice gauge theory with adjoint fermions. We use HEX smearing and clover improvement to reduce the discretization effects. We obtain a robust continuum limit for the step scaling, which confirms the existence of a non-trivial fixed point.

  20. Budzik et al., page 1 of 30 RUNNING HEAD

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Budzik et al., page 1 of 30 RUNNING HEAD Resource Discovery Assistants JOURNAL TITLE International Resource Discovery in the Context of Ongoing Tasks with Proactive Assistants CONTACT AUTHOR Jay Budzik. Evanston, IL 60201 USA +1 847 467-1771 (phone) +1 847 491-5258 (fax) budzik@infolab.nwu.edu AUTHORS Jay

  1. University of Edinburgh Guide to Running WRF on Luke Smallman

    E-Print Network [OSTI]

    in the `geos_gc_wrf' group. The command line interface is used for compilation and data movement which runs command lines which you should add to your .bashrc. This is your login shell script, allowing you with options detailed and actually typed commands shown in red. There is additional help available

  2. Beyond Biodiesel Running on Straight Vegetable Oil (SVO)

    E-Print Network [OSTI]

    Kaye, Jason P.

    20 Beyond Biodiesel ­ Running on Straight Vegetable Oil (SVO) The green tree has many branches in the development and promotion of biodiesel for nearly two decades. Technologies based on the use of hydrogen in a low-percentage mixture with petroleum fuel. Hence the development of biodiesel. Paul Trella, New

  3. Recto Running Head 1 Available Potential Energy and Exergy in

    E-Print Network [OSTI]

    Tailleux, Remi

    ) remains the main framework for studying the atmospheric and oceanic energy cycles. Because the APE energy cycle . . . . . . . . . . . . . . . . . . . . 23 Classical view of the ocean energy cycleRecto Running Head 1 Available Potential Energy and Exergy in Stratified Fluids R´emi Tailleux

  4. Absorbing Phase Transitions and Dynamic Freezing in Running Active Matter Systems

    E-Print Network [OSTI]

    C. Reichhardt; C. J. Olson Reichhardt

    2014-06-12T23:59:59.000Z

    We examine a two-dimensional system of sterically repulsive interacting disks where each particle runs in a random direction. This system is equivalent to a run-and-tumble dynamics system in the limit where the run time is infinite. At low densities, we find a strongly fluctuating state composed of transient clusters. Above a critical density that is well below the density at which non-active particles would crystallize, the system can organize into a drifting quiescent or frozen state where the fluctuations are lost and large crystallites form surrounded by a small density of individual particles. Although all the particles are still moving, their paths form closed orbits. The average transient time to organize into the quiescent state diverges as a power law upon approaching the critical density from above. We compare our results to the random organization observed for periodically sheared systems that can undergo an absorbing transition from a fluctuating state to a dynamical non-fluctuating state. In the random organization studies, the system organizes to a state in which the particles no longer interact; in contrast, we find that the randomly running active matter organizes to a strongly interacting dynamically jammed state. We show that the transition to the frozen state is robust against a certain range of stochastic fluctuations. We also examine the effects of adding a small number of pinned particles to the system and find that the transition to the frozen state shifts to significantly lower densities and arises via the nucleation of faceted crystals centered at the obstacles.

  5. Wave run-up on a high-energy dissipative beach Peter Ruggiero

    E-Print Network [OSTI]

    Wave run-up on a high-energy dissipative beach Peter Ruggiero Coastal and Marine Geology Program, U in foreshore beach morphology, wave run-up data collected along the central Oregon coast during February 1996 stand in contrast to run-up data currently available in the literature. During a single data run lasting

  6. Development and validation of a hurricane nature run using the joint OSSE nature run and the WRF model

    E-Print Network [OSTI]

    Nolan, David S.

    model David S. Nolan,1 Robert Atlas,2 Kieran T. Bhatia,1 and Lisa R. Bucci3 Received 6 March 2013 model (WRF), embedded within the Joint OSSE global nature run previously generated by the European observations. These include the pressure-wind relationship, the kinematic and thermodynamic structure

  7. Step-wise changes in glacier flow speed coincide with calving and glacial earthquakes at Helheim Glacier, Greenland

    E-Print Network [OSTI]

    Nettles, M.; Larsen, T.B.; Elosegui, P.; Hamilton, Gordon S.; Stearns, Leigh; Ahlstrom, A.P.; Davis, J.L.; Anderson, M.L.; de Juan, J.; Khan, S.A.; Stenseng, L.; Ekstrom, G.; Forsberg, R.

    2008-12-30T23:59:59.000Z

    [1] Geodetic observations show several large, sudden increases in flow speed at Helheim Glacier, one of Greenland's largest outlet glaciers, during summer, 2007. These step-like accelerations, detected along the length of the glacier, coincide...

  8. The Aerodynamic Signature of Running Spiders Jero^ me Casas1

    E-Print Network [OSTI]

    Boyer, Edmond

    and ecological terms, without considering the role of signals produced by predators and perceived by prey. Wolf of sensory ecology and is consistent with the escape distances and speeds of cricket prey. These findings may the Cricket Inspired perCeption and Autonomous Decision Automata (CICADA) project (IST-2001- 34718) and within

  9. High-speed thermal cycling system and method of use

    DOE Patents [OSTI]

    Hansen, A.D.A.; Jaklevic, J.M.

    1996-04-16T23:59:59.000Z

    A thermal cycling system and method of use are described. The thermal cycling system is based on the circulation of temperature-controlled water directly to the underside of thin-walled polycarbonate plates. The water flow is selected from a manifold fed by pumps from heated reservoirs. The plate wells are loaded with typically 15-20 microliters of reagent mix for the PCR process. Heat transfer through the thin polycarbonate is sufficiently rapid that the contents reach thermal equilibrium with the water in less than 15 seconds. Complete PCR amplification runs of 40 three-step cycles have been performed in as little as 14.5 minutes, with the results showing substantially enhanced specificity compared to conventional technology requiring run times in excess of 100 minutes. The plate clamping station is designed to be amenable to robotic loading and unloading of the system. It includes a heated lid, thus eliminating the need for mineral oil overlay of the reactants. The present system includes three or more plate holder stations, fed from common reservoirs but operating with independent switching cycles. The system can be modularly expanded. 13 figs.

  10. High-speed thermal cycling system and method of use

    DOE Patents [OSTI]

    Hansen, Anthony D. A. (Berkely, CA); Jaklevic, Joseph M. (Lafayette, CA)

    1996-01-01T23:59:59.000Z

    A thermal cycling system and method of use are described. The thermal cycling system is based on the-circulation of temperature-controlled water directly to the underside of thin-walled polycarbonate microtiter plates. The water flow is selected from a manifold fed by pumps from heated reservoirs. The plate wells are loaded with typically 15-20 .mu.l of reagent mix for the PCR process. Heat transfer through the thin polycarbonate is sufficiently rapid that the contents reach thermal equilibrium with the water in less than 15 seconds. Complete PCR amplification runs of 40 three-step cycles have been performed in as little as 14.5 minutes, with the results showing substantially enhanced specificity compared to conventional technology requiring run times in excess of 100 minutes. The plate clamping station is designed to be amenable to robotic loading and unloading of the system. It includes a heated lid, thus eliminating the need for mineral oil overlay of the reactants. The present system includes three or more plate holder stations, fed from common reservoirs but operating with independent switching cycles. The system can be modularly expanded.

  11. Environmental Influences on the LIGO Gravitational Wave Detectors during the 6th Science Run

    E-Print Network [OSTI]

    Effler, A; Frolov, V V; Gonzalez, G; Kawabe, K; Smith, J R; Birch, J; McCarthy, R

    2014-01-01T23:59:59.000Z

    We describe the influence of environmental noise on LIGO detectors in the sixth science run (S6), from July 2009 to October 2010. We show results from experimental investigations testing the coupling level and mechanisms for acoustic, electromagnetic/magnetic and seismic noise to the instruments. We argument the sensors' importance for vetoes of false positive detections, report estimates of the noise sources' contributions to the detector background, and discuss the ways in which environmental coupling should be reduced in the LIGO upgrade, Advanced LIGO.

  12. Dilepton constraints in the Inert Doublet Model from Run 1 of the LHC

    E-Print Network [OSTI]

    Belanger, G; Goudelis, A; Herrmann, B; Kraml, S; Sengupta, D

    2015-01-01T23:59:59.000Z

    Searches in final states with two leptons plus missing transverse energy, targeting supersymmetric particles or invisible decays of the Higgs boson, were performed during Run 1 of the LHC. Recasting the results of these analyses in the context of the Inert Doublet Model (IDM) using MadAnalysis 5, we show that they provide constraints on inert scalars that significantly extend previous limits from LEP. Moreover, these LHC constraints allow to test the IDM in the limit of very small Higgs-inert scalar coupling, where the constraints from direct detection of dark matter and the invisible Higgs width vanish.

  13. Leading hadronic contributions to the running of the electroweak coupling constants from lattice QCD

    E-Print Network [OSTI]

    Burger, Florian; Petschlies, Marcus; Pientka, Grit

    2015-01-01T23:59:59.000Z

    The quark-connected leading-order hadronic contributions to the running of the electromagnetic fine structure constant, $\\alpha_{\\rm QED}$, and the weak mixing angle, $\\theta_W$, are determined by a four-flavour lattice QCD computation with twisted mass fermions. Full agreement of the results with a phenomenological analysis is observed with an even comparable statistical uncertainty. We show that the uncertainty of the lattice calculation is dominated by systematic effects which then leads to significantly larger errors than obtained by the phenomenological analysis.

  14. Leading hadronic contributions to the running of the electroweak coupling constants from lattice QCD

    E-Print Network [OSTI]

    Florian Burger; Karl Jansen; Marcus Petschlies; Grit Pientka

    2015-05-13T23:59:59.000Z

    The quark-connected leading-order hadronic contributions to the running of the electromagnetic fine structure constant, $\\alpha_{\\rm QED}$, and the weak mixing angle, $\\theta_W$, are determined by a four-flavour lattice QCD computation with twisted mass fermions. Full agreement of the results with a phenomenological analysis is observed with an even comparable statistical uncertainty. We show that the uncertainty of the lattice calculation is dominated by systematic effects which then leads to significantly larger errors than obtained by the phenomenological analysis.

  15. Cosmological constant and quantum gravitational corrections to the running fine structure constant

    E-Print Network [OSTI]

    David J. Toms

    2008-09-23T23:59:59.000Z

    The quantum gravitational contribution to the renormalization group behavior of the electric charge in Einstein-Maxwell theory with a cosmological constant is considered. Quantum gravity is shown to lead to a contribution to the running charge not present when the cosmological constant vanishes. This re-opens the possibility, suggested by Robinson and Wilczek, of altering the scaling behaviour of gauge theories at high energies although our result differs. We show the possibility of an ultraviolet fixed point that is linked directly to the cosmological constant.

  16. Jet quenching with running coupling including radiative and collisional energy losses

    E-Print Network [OSTI]

    B. G. Zakharov

    2008-11-05T23:59:59.000Z

    We calculate the nuclear modification factor for RHIC and LHC conditions accounting for the radiative and collisional parton energy loss with the running coupling constant.We find that the RHIC data can be explained both in the scenario with the chemically equilibrium quark-gluon plasma and purely gluonic plasma with slightly different thermal suppression of the coupling constant. The role of the parton energy gain due to gluon absorption is also investigated. Our results show that the energy gain gives negligible effect.

  17. Gas Model of Gravitons with Light Speed

    E-Print Network [OSTI]

    Ming Chen; Yong-Chang Huang

    2014-06-17T23:59:59.000Z

    We first review some aspects of gravitational wave and the thermodynamic expression of Einstein field equations, these achieved conclusions allow people to think of Einstein's gravitational wave as a kind of sound wave in ordinary gas which propagates as an adiabatic compression wave. In the following, using the properties of photon gas in "white wall box", we find an analogous relationship between ordinary gas and photon gas through sound velocity formula. At last, by taking the ordinary gas as an intermediary, we find that gravitational wave is analogous to photon gas, or equally, gravitons are analogous to photons although they are different in some ways such as spins and coupling strengths, and these different properties don't affect their propagation speeds. Utilizing this analogous relationship, we achieve the gas model of gravitons and this model naturally gives out the light speed of gravitons

  18. Thermodynamics in variable speed of light theories

    E-Print Network [OSTI]

    Juan Racker; Pablo Sisterna; Hector Vucetich

    2009-11-30T23:59:59.000Z

    The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light ($c$), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of $c$ is set. An independent bound is obtained from luminosity estimates for Stein 2015B.

  19. High-speed CARIBU and Other Behemoths

    Broader source: Energy.gov [DOE]

    Question: Why did the caribou cross the road, at 76 million miles per hour? Answer: To catch up with the chicken. Visitors to the Department of Energy’s Argonne National Laboratory won’t actually encounter any hyper-speed fowl, but they will see a high-speed CARIBU, which recently started to chase other exotic beasts in the particle zoo. Argonne’s CARIBU – which stands for Californium Rare Isotope Breeder Upgrade – is designed to study the inner part of an atom known as its nucleus. A nucleus consists of a collection of two types of particles, the proton, with a positive charge, and the neutron, with no charge, just mass. Those particles themselves are made of even smaller particles called quarks. CARIBU creates extra-heavy (neutron-rich) nuclei, and then spits them out of a nozzle for acceleration.

  20. Time Running Out: A Portrait of California Families Reaching the CalWORKs Time Limit in 2004, Detailed Research Findings

    E-Print Network [OSTI]

    London, Rebecca A.; Mauldon, Jane G.

    2006-01-01T23:59:59.000Z

    WPRP Time Running Out: A Portrait of California FamiliesG. Mauldon November 2006 Time Running Out: A Portrait of

  1. Data Capture Technique for High Speed Signaling

    DOE Patents [OSTI]

    Barrett, Wayne Melvin (Rochester, MN); Chen, Dong (Croton On Hudson, NY); Coteus, Paul William (Yorktwon Heights, NY); Gara, Alan Gene (Mount Kisco, NY); Jackson, Rory (Eastchester, NY); Kopcsay, Gerard Vincent (Yorktown Hieghts, NY); Nathanson, Ben Jesse (Teaneck, NY); Vranas, Paylos Michael (Bedford Hills, NY); Takken, Todd E. (Brewster, NY)

    2008-08-26T23:59:59.000Z

    A data capture technique for high speed signaling to allow for optimal sampling of an asynchronous data stream. This technique allows for extremely high data rates and does not require that a clock be sent with the data as is done in source synchronous systems. The present invention also provides a hardware mechanism for automatically adjusting transmission delays for optimal two-bit simultaneous bi-directional (SiBiDi) signaling.

  2. Energy curable compositions having improved cure speeds

    DOE Patents [OSTI]

    Halm, Leo W. (Blaine, MN)

    1993-01-01T23:59:59.000Z

    A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

  3. Thermoacoustic tomography with variable sound speed

    E-Print Network [OSTI]

    Stefanov, Plamen

    2009-01-01T23:59:59.000Z

    We study the mathematical model of thermoacoustic tomography in media with a variable speed for a fixed time interval, greater than the diameter of the domain. In case of measurements on the whole boundary, we give an explicit solution in terms of a Neumann series expansion. We give necessary and sufficient conditions for uniqueness and stability when the measurements are taken on a part of the boundary.

  4. Thermoacoustic tomography with variable sound speed

    E-Print Network [OSTI]

    Plamen Stefanov; Gunther Uhlmann

    2009-05-30T23:59:59.000Z

    We study the mathematical model of thermoacoustic tomography in media with a variable speed for a fixed time interval, greater than the diameter of the domain. In case of measurements on the whole boundary, we give an explicit solution in terms of a Neumann series expansion. We give necessary and sufficient conditions for uniqueness and stability when the measurements are taken on a part of the boundary.

  5. Energy Savings of Variable Speed Motors

    E-Print Network [OSTI]

    Fishel, F. D.

    1979-01-01T23:59:59.000Z

    pump) The input horsepower from the electrical system can be calculated using Equation (3). static head + frictional head + control valve Input HP = ::"\\;;=~..l... motor, conduit, and wire. Motors in the 25-350 HP range are best suited to VFD Systems. As the cost of energy increases and the relative cost savings of variable speed systems increase, the application of these systems should be more widespread. 281...

  6. Speed-line for 3D animation

    E-Print Network [OSTI]

    Song, Won Chan

    2007-04-25T23:59:59.000Z

    point moved to a CV on the circle . . . . . . . . . . . . . . 38 39 Ending point placed between the starting point and the goal object . 38 40 Speed-lines with another cartoon effect . . . . . . . . . . . . . . . . . 41 ix FIGURE Page 41 Image sequences... from the result animation . . . . . . . . . . . . . . . 42 1 CHAPTER I INTRODUCTION One of the earliest artists who tried to convey dynamic movement in a static image is Hokusai Katsushika, who is one of the best known Ukiyo-e1 artists. He is called...

  7. Energy curable compositions having improved cure speeds

    DOE Patents [OSTI]

    Halm, L.W.

    1993-05-18T23:59:59.000Z

    The composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

  8. ATLAS Metadata Infrastructure Evolution for Run 2 and Beyond

    E-Print Network [OSTI]

    van Gemmeren, Peter; The ATLAS collaboration; Malon, David; Vaniachine, Alexandre

    2015-01-01T23:59:59.000Z

    ATLAS developed and employed for Run 1 of the Large Hadron Collider a sophisticated infrastructure for metadata handling in event processing jobs. This infrastructure profits from a rich feature set provided by the ATLAS execution control framework, including standardized interfaces and invocation mechanisms for tools and services, segregation of transient data stores with concomitant object lifetime management, and mechanisms for handling occurrences asynchronous to the control framework’s state machine transitions. This metadata infrastructure is evolving and being extended for Run 2 to allow its use and reuse in downstream physics analyses, analyses that may or may not utilize the ATLAS control framework. At the same time, multiprocessing versions of the control framework and the requirements of future multithreaded frameworks are leading to redesign of components that use an incident-handling approach to asynchrony. The increased use of scatter-gather architectures, both local and distributed, requires ...

  9. The Higgs Legacy of the LHC Run I

    E-Print Network [OSTI]

    Corbett, Tyler; Goncalves, Dorival; Gonzalez-Fraile, J; Plehn, Tilman; Rauch, Michael

    2015-01-01T23:59:59.000Z

    Based on Run I data we present a comprehensive analysis of Higgs couplings. For the first time this SFitter analysis includes independent tests of the Higgs-gluon and top Yukawa couplings, Higgs decays to invisible particles, and off-shell Higgs measurements. The observed Higgs boson is fully consistent with the Standard Model, both in terms of coupling modifications and effective field theory. Based only on Higgs total rates the results using both approaches are essentially equivalent, with the exception of strong correlations in the parameter space induced by effective operators. These correlations can be controlled through additional experimental input, namely kinematic distributions. Including kinematic distributions the typical Run I reach for weakly interacting new physics now reaches 300 to 500 GeV.

  10. Measurements of the Running of the Electromagnetic Coupling at LEP

    E-Print Network [OSTI]

    Salvatore Mele

    2006-10-12T23:59:59.000Z

    The study of Bhabha scattering at e^+e^- colliders probes the running of the electromagnetic coupling. After early measurements by the VENUS collaboration at TRISTAN and the by L3 collaboration at LEP, two recent analyses have been performed by the OPAL and L3 collaborations. The OPAL collaboration studied high-statistics low-angle Bhabha scattering at LEP, achieving a precise determination of the running of alpha in the region 1.8GeV^2<-Q^2<6.1GeV^2. The L3 collaboration investigated high-energy large-angle Bhabha scattering to first probe the region 1800GeV^2 < -Q^2 < 21600GeV^2. All measurements are described and a global overview of their agreement with QED predictions is given.

  11. CMS physics highlights in the LHC Run 1

    E-Print Network [OSTI]

    David d'Enterria for the CMS Collaboration

    2015-05-18T23:59:59.000Z

    The main physics results obtained by the CMS experiment during the first three years of operation of the CERN Large Hadron Collider (2010--2013, aka. Run 1) are summarized. The advances in our understanding of the fundamental particles and their interactions are succinctly reviewed under the following physics topics: (i) Quantum Chromodynamics, (ii) Quark Gluon Plasma, (iii) Electroweak interaction, (iv) Top quark, (v) Higgs boson, (vi) Flavour, (vii) Supersymmetry, (viii) Dark Matter, and (ix) other searches of physics beyond the Standard Model.

  12. The run control and monitoring system of the CMS experiment

    SciTech Connect (OSTI)

    Bauer, Gerry; /MIT; Boyer, Vincent; /CERN; Branson, James; /UCLA; Brett, Angela; Cano, Eric; Carboni, Andrea; Ciganek, Marek; Cittolin, Sergio; /CERN; O'Dell, Vivian; /Fermilab; Erhan, Samim; /CERN /UC, San Diego; Gigi, Dominique; /CERN /Kyungpook Natl. U. /MIT /UCLA /CERN /INFN, Legnaro

    2007-10-01T23:59:59.000Z

    The CMS experiment at the LHC at CERN will start taking data in 2008. To configure, control and monitor the experiment during data-taking the Run Control and Monitoring System (RCMS) was developed. This paper describes the architecture and the technology used to implement the RCMS, as well as the deployment and commissioning strategy of this important component of the online software for the CMS experiment.

  13. Prospects for Antineutrino Running at MiniBooNE

    E-Print Network [OSTI]

    M. O. Wascko

    2006-02-28T23:59:59.000Z

    MiniBooNE began running in antineutrino mode on 19 January, 2006. We describe the sensitivity of MiniBooNE to LSND-like nuebar oscillations and outline a program of antineutrino cross-section measurements necessary for the next generation of neutrino oscillation experiments. We describe three independent methods of constraining wrong-sign (neutrino) backgrounds in an antineutrino beam, and their application to the MiniBooNE antineutrino analyses.

  14. Gauge Dependence of Gravitational Correction to Running of Gauge Couplings

    E-Print Network [OSTI]

    Artur R. Pietrykowski

    2007-02-06T23:59:59.000Z

    Recently an interesting idea has been put forward by Robinson and Wilczek that incorporation of quantized gravity in the framework of abelian and nonabelian gauge theories results in a correction to the running of gauge coupling and, in consequence, to increase of the Grand Unification scale and to the asymptotic freedom. In this paper it is shown by explicit calculations that this correction depends on the choice of gauge.

  15. Risk Sensitive Control of Diffusions with Small Running Cost

    SciTech Connect (OSTI)

    Biswas, Anup, E-mail: anup@math.tifrbng.res.in [TIFR Centre for Applicable Mathematics (India)

    2011-08-15T23:59:59.000Z

    Infinite horizon risk-sensitive control of diffusions is analyzed under a stability condition coupled with a bound on the running cost. It is shown that the corresponding Hamilton-Jacobi-Bellman equation has a solution (w( Dot-Operator ),{lambda}{sup Asterisk-Operator }) where the scalar {lambda}{sup Asterisk-Operator} is in fact the optimal cost. This also leads to an existence result for optimal controls.

  16. Spent fuel drying system test results (second dry-run)

    SciTech Connect (OSTI)

    Klinger, G.S.; Oliver, B.M.; Abrefah, J.; Marschman, S.C.; MacFarlan, P.J.; Ritter, G.A.

    1998-07-01T23:59:59.000Z

    The water-filled K-Basins in the Hanford 100 Area have been used to store N-Reactor spent nuclear fuel (SNF) since the 1970s. Because some leaks have been detected in the basins and some of the fuel is breached due to handling damage and corrosion, efforts are underway to remove the fuel elements from wet storage. An Integrated Process Strategy (IPS) has been developed to package, dry, transport, and store these metallic uranium fuel elements in an interim storage facility on the Hanford Site (WHC 1995). Information required to support the development of the drying processes, and the required safety analyses, is being obtained from characterization tests conducted on fuel elements removed from the K-Basins. A series of whole element drying tests (reported in separate documents, see Section 7.0) have been conducted by Pacific Northwest National Laboratory (PNNL) on several intact and damaged fuel elements recovered from both the K-East and K-West Basins. This report documents the results of the second dry-run test, which was conducted without a fuel element. With the concurrence of project management, the test protocol for this run, and subsequent drying test runs, was modified. These modifications were made to allow for improved data correlation with drying procedures proposed under the IPS. Details of these modifications are discussed in Section 3.0.

  17. Running of Radiative Neutrino Masses: The Scotogenic Model

    E-Print Network [OSTI]

    Romain Bouchand; Alexander Merle

    2012-04-30T23:59:59.000Z

    We study the renormalization group equations of Ma's scotogenic model, which generates an active neutrino mass at 1-loop level. In addition to other benefits, the main advantage of the mechanism exploited in this model is to lead to a natural loop-suppression of the neutrino mass, and therefore to an explanation for its smallness. However, since the structure of the neutrino mass matrix is altered compared to the ordinary type I seesaw case, the corresponding running is altered as well. We have derived the full set of renormalization group equations for the scotogenic model which, to our knowledge, had not been presented previously in the literature. This set of equations reflects some interesting structural properties of the model, and it is an illustrative example for how the running of neutrino parameters in radiative models is modified compared to models with tree-level mass generation. We also study a simplified numerical example to illustrate some general tendencies of the running. Interestingly, the structure of the RGEs can be exploited such that a bimaximal leptonic mixing pattern at the high-energy scale is translated into a valid mixing pattern at low energies, featuring a large value of \\theta_{13}. This suggests very interesting connections to flavour symmetries.

  18. Optimisation of the ATLAS Track Reconstruction Software for Run-2

    E-Print Network [OSTI]

    Salzburger, Andreas; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    Track reconstruction is one of the most complex element of the reconstruction of events recorded by ATLAS from collisions delivered by the LHC. It is the most time consuming reconstruction component in high luminosity environments. The flat budget projections for computing resources for Run-2 of the LHC together with the demands of reconstructing higher pile-up collision data at rates more than double those in Run-1 (an increase from 400 Hz to 1 kHz in trigger output) have put stringent requirements on the track reconstruction software. The ATLAS experiment has performed a two year long software campaign which aimed to reduce the reconstruction rate by a factor of three to meet the resource limitations for Run-2: the majority of the changes to achieve this were improvements to the track reconstruction software. The CPU processing time of ATLAS track reconstruction was reduced by more than a factor of three during this campaign without any loss of output information of the track reconstruction. We present the ...

  19. CDF Run IIb Silicon Vertex Detector DAQ Upgrade

    SciTech Connect (OSTI)

    S. Behari et al.

    2003-12-18T23:59:59.000Z

    The CDF particle detector operates in the beamline of the Tevatron proton-antiproton collider at Fermilab, Batavia, IL. The Tevatron is expected to undergo luminosity upgrades (Run IIb) in the future, resulting in a higher number of interactions per beam crossing. To operate in this dense radiation environment, an upgrade of CDF's silicon vertex detector (SVX) subsystem and a corresponding upgrade of its VME-based DAQ system has been explored. Prototypes of all the Run IIb SVX DAQ components have been constructed, assembled into a test stand and operated successfully using an adapted version of CDF's network-capable DAQ software. In addition, a PCI-based DAQ system has been developed as a fast and inexpensive tool for silicon detector and DAQ component testing in the production phase. In this paper they present an overview of the Run IIb silicon DAQ upgrade, emphasizing the new features and improvements incorporated into the constituent VME boards, and discuss a PCI-based DAQ system developed to facilitate production tests.

  20. Spent fuel drying system test results (first dry-run)

    SciTech Connect (OSTI)

    Klinger, G.S.; Oliver, B.M.; Abrefah, J.; Marschman, S.C.; MacFarlan, P.J.; Ritter, G.A.

    1998-07-01T23:59:59.000Z

    The water-filled K-Basins in the Hanford 100 Area have been used to store N-Reactor spent nuclear fuel (SNF) since the 1970s. Because some leaks in the basin have been detected and some of the fuel is breached due to handling damage and corrosion, efforts are underway to remove the fuel elements from wet storage. An Integrated Process Strategy (IPS) has been developed to package, dry, transport, and store these metallic uranium fuel elements in an interim storage facility on the Hanford Site. Information required to support the development of the drying processes, and the required safety analyses, is being obtained from characterization tests conducted on fuel elements removed from the K-Basins. A series of whole element drying tests (reported in separate documents, see Section 7.0) have been conducted by Pacific Northwest National Laboratory (PNNL) on several intact and damaged fuel elements recovered from both the K-East and K-West Basins. This report documents the results of the first dry-run test, which was conducted without a fuel element. The empty test apparatus was subjected to a combination of low- and high-temperature vacuum drying treatments that were intended to mimic, wherever possible, the fuel treatment strategies of the IPS. The data from this dry-run test can serve as a baseline for the first two fuel element tests, 1990 (Run 1) and 3128W (Run 2). The purpose of this dry-run was to establish the background levels of hydrogen in the system, and the hydrogen generation and release characteristics attributable to the test system without a fuel element present. This test also serves to establish the background levels of water in the system and the water release characteristics. The system used for the drying test series was the Whole Element Furnace Testing System, described in Section 2.0, which is located in the Postirradiation Testing Laboratory (PTL, 327 Building). The test conditions and methodology are given in section 3.0, and the experimental results provided in Section 4.0. These results are further discussed in Section 5.0.

  1. Excitation and control of a high-speed induction generator

    E-Print Network [OSTI]

    Englebretson, Steven Carl

    2005-01-01T23:59:59.000Z

    This project investigates the use of a high speed, squirrel cage induction generator and power converter for producing DC electrical power onboard ships and submarines. Potential advantages of high speed induction generators ...

  2. Comparison of operating speeds at spiral transition and circular curves

    E-Print Network [OSTI]

    Passetti, Karl Andrew

    1998-01-01T23:59:59.000Z

    analyzed, the presence of spiral transitions was not shown to produce any significant differences in operating speeds for passenger cars. Therefore, it is recommended that speed prediction models do not have to account for the presence of spiral transitions...

  3. High-speed cinematography of internal explosions for aviation security

    E-Print Network [OSTI]

    Settles, Gary S.

    High-speed cinematography of internal explosions for aviation security G.S. Settles1 , J.R. Benwood of a program to remedy this were shown. Having demonstrated high-speed schlieren shock wave cinematography

  4. Economical Aspects of Adjustable Speed Drives in Pumping Systems

    E-Print Network [OSTI]

    Hovstadius, G.

    Speed variations of pumps have become increasingly popular as the technology to produce variable frequency drives has progressed. Variable speed drives have many advantages compared to throttle valves when it comes to regulation of flow. They offer...

  5. Energy Innovation Hub Report Shows Philadelphia-area Building...

    Office of Environmental Management (EM)

    Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support 23,500 Jobs Energy Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support...

  6. Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1 , Richard EMILION2 , Ted'Orléans), UMR CNRS 6628 Université d'Orléans, France. Abstract: Wind energy production is very sensitive to instantaneous wind speed fluctuations. Thus rapid variation of wind speed due to changes in the local

  7. Speed adaptation in a powered transtibial prosthesis controlled with a

    E-Print Network [OSTI]

    Herr, Hugh

    Research Speed adaptation in a powered transtibial prosthesis controlled with a neuromuscular model a powered ankle­foot prosthesis and tested by an amputee walking at three speeds. The controller produced model; powered prosthesis; prosthesis control; speed adaptation 1. INTRODUCTION The human ankle

  8. Taiwan High Speed Rail Keeping passenger safety at the forefront

    E-Print Network [OSTI]

    Benefits Increased safety and reliability of the Taiwan High Speed Rail network through conditionTaiwan High Speed Rail Keeping passenger safety at the forefront Overview The Need Taiwan High Speed Rail Corporation (THSRC) needed a highly reliable, cost- effective and proactive means

  9. Estimation of Wind Speed in Connection to a Wind Turbine

    E-Print Network [OSTI]

    Estimation of Wind Speed in Connection to a Wind Turbine X. Ma #3; , N. K. Poulsen #3; , H. Bindner y December 20, 1995 Abstract The wind speed varies over the rotor plane of wind turbine making the wind speed on the rotor plane will be estimated by using a wind turbine as a wind measuring device

  10. Auto-Calibration and Control Strategy Determination for a Variable-Speed Heat Pump Water Heater Using Optimization

    SciTech Connect (OSTI)

    Shen, Bo [ORNL] [ORNL; Abdelaziz, Omar [ORNL] [ORNL; Rice, C Keith [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    This paper introduces applications of the GenOpt optimizer coupled with a vapor compression system model for auto-calibration and control strategy determination towards the development of a variable-speed ground-source heat pump water heating unit. The GenOpt optimizer can be linked with any simulation program using input and output text files. It effectively facilitates optimization runs. Using our GenOpt wrapper program, we can flexibly define objectives for optimizations, targets, and constraints. Those functionalities enable running extensive optimization cases for model calibration, configuration design and control strategy determination. In addition, we describe a methodology to improve prediction accuracy using functional calibration curves. Using the calibrated model, we investigated control strategies of the ground-source heat pump water heater, considering multiple control objectives, covering the entire operation range.

  11. Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement

    E-Print Network [OSTI]

    Jens Elgeti; Gerhard Gompper

    2015-03-22T23:59:59.000Z

    Run-and-tumble dynamics is a wide-spread mechanism of swimming bacteria. The accumulation of run-and-tumble microswimmers near impermeable surfaces is studied theoretically and numerically in the low-density limit in two and three spatial dimensions. Both uni-modal and exponential distributions of the run lengths are considered. Constant run lengths lead to {peaks and depletions regions} in the density distribution of particles near the surface, in contrast to {exponentially-distributed run lengths}. Finally, we present a universal accumulation law for large channel widths, which applies not only to run-and-tumble swimmers, but also to many other kinds of self-propelled particles.

  12. Low Speed Automation, a French Initiative

    E-Print Network [OSTI]

    Sébastien Glaser; Maurice Cour; Lydie Nouveliere; Alain Lambert; Fawzi Nashashibi; Jean-christophe Popieul; Benjamin Mourllion

    MIPS, 2 rue des frères Lumière,68093 Mulhouse-FRANCE Nowadays, vehicle safety is constantly increasing thanks to the improvement of vehicle passive and active safety. However, on a daily usage of the car, traffic jams remains a problem. With limited space for road infrastructure, automation of the driving task on specific situation seems to be a possible solution. The French project ABV, which stands for low speed automation, tries to demonstrate the feasibility of the concept and to prove the benefits. In this article, we describe the scientific background of the project and expected outputs. "Keywords: vehicle automation, shared control, environment sensing, data fusion;" 1.

  13. Moving system with speeded-up evolution

    E-Print Network [OSTI]

    M. I. Shirokov

    2008-02-29T23:59:59.000Z

    In the classical (non-quantum) relativity theory the course of the moving clock is dilated as compared to the course of the clock at rest (the Einstein dilation). Any unstable system may be regarded as a clock. The time evolution (e.g., the decay) of a uniformly moving physical system is considered using the relativistic quantum theory. The example of a moving system is given whose evolution turns out to be speeded-up instead of being dilated. A discussion of this paradoxical result is presented.

  14. Nuclear Speed-Dating | 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated CodesTransparencyDOE Project TapsDOERecoveryNuclear Speed-Dating Nuclear

  15. Finite speed of propagation and local boundary conditions for wave equations with point interactions

    E-Print Network [OSTI]

    Pavel Kurasov; Andrea Posilicano

    2006-02-10T23:59:59.000Z

    We show that the boundary conditions entering in the definition of the self-adjoint operator describing the Laplacian plus a finite number of point interactions are local if and only if the corresponding wave equation has finite speed of propagation

  16. High-speed Router Filter for Blocking TCP Flooding under DDoS Attack

    E-Print Network [OSTI]

    Chao, Jonathan

    High-speed Router Filter for Blocking TCP Flooding under DDoS Attack Yoohwan Kim',Ju-Yeon Jo', H during the Distributed Denial-oJService (DDoS) attack. By allocating bandwidths separately for TCP.9% of the attack trafic while legitimate traflc showed nearly identical performance as in the non-attacked

  17. Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access

    E-Print Network [OSTI]

    Stancil, Daniel D.

    Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access Ariton E. Xhafa-conditioning (HVAC) ducts based on multi-carrier transmission that uses M-QAM mod- ulation and measured channel- flections in HVAC ducts). Our work also shows that data rates in excess of 300 Mbps are possible over

  18. The effect of rainfall on freeway travel speeds

    E-Print Network [OSTI]

    Holdener, Douglas Joseph

    1997-01-01T23:59:59.000Z

    Distribution of All 5-minute Rainfall Summaries. . . . . 43 13 Distribution of Daily Rainfall Summaries by Rainfall Gauge. . . . . . 44 14 Dis&bution of 5-minute Mean Speeds over Mid-day Period during Dry Conditions. 62 15 Mean Link One Speeds by Weekday.... . 65 LIST OF FIGURES FIGURE 16 Distribution of Link Speed Data over Peak Period. . . . . . . . . 17 Average Link Speeds by Weekday over Peak Period. . . . . Page 67 69 18 Link One Speeds during Evening Period. 75 19 Plot of Wet and Dry Travel...

  19. CMS Data Processing Workflows during an Extended Cosmic Ray Run

    SciTech Connect (OSTI)

    Not Available

    2009-11-01T23:59:59.000Z

    The CMS Collaboration conducted a month-long data taking exercise, the Cosmic Run At Four Tesla, during October-November 2008, with the goal of commissioning the experiment for extended operation. With all installed detector systems participating, CMS recorded 270 million cosmic ray events with the solenoid at a magnetic field strength of 3.8 T. This paper describes the data flow from the detector through the various online and offline computing systems, as well as the workflows used for recording the data, for aligning and calibrating the detector, and for analysis of the data.

  20. A Heating Model for the Millennium Gas Run

    E-Print Network [OSTI]

    L. Gazzola; F. R. Pearce

    2006-11-22T23:59:59.000Z

    The comparison between observations of galaxy clusters thermo-dynamical properties and theoretical predictions suggests that non-gravitational heating needs to be added into the models. We implement an internally self-consistent heating scheme into GADGET-2 for the third (and fourth) run of the Millennium gas project (Pearce et al. in preparation), a set of four hydrodynamical cosmological simulations with N=2(5x10^8) particles and with the same volume (L=500 h-1 Mpc) and structures as the the N-body Millennium Simulation (Springel et al. 2005). Our aim is to reproduce the observed thermo-dynamical properties of galaxy clusters.

  1. LHCb's Real-Time Alignment in Run2

    E-Print Network [OSTI]

    Batozskaya, Varvara

    2015-01-01T23:59:59.000Z

    Stable, precise spatial alignment and PID calibration are necessary to achieve optimal detector performances. During Run2, LHCb will have a new real-time detector alignment and calibration to reach equivalent performances in the online and offline reconstruction. This offers the opportunity to optimise the event selection by applying stronger constraints as well as hadronic particle identification at the trigger level. The required computing time constraints are met thanks to a new dedicated framework using the multi-core farm infrastructure for the trigger.

  2. Sub-wavelength position measurements with running wave driving fields

    E-Print Network [OSTI]

    J. Evers; S. Qamar

    2009-01-29T23:59:59.000Z

    A scheme for sub-wavelength position measurements of quantum particles is discussed, which operates with running-wave laser fields as opposed to standing wave fields proposed in previous setups. The position is encoded in the phase of the applied fields rather than in the spatially modulated intensity of a standing wave. Therefore, disadvantages of standing wave schemes such as cases where the atom remains undetected since it is at a node of the standing wave field are avoided. Reversing the directions of parts of the driving laser fields allows to switch between different magnification levels, and thus to optimize the localization.

  3. Full Core Reactor Analysis: Running Denovo on Jaguar

    SciTech Connect (OSTI)

    Jarrell, Joshua J [ORNL] [ORNL; Godfrey, Andrew T [ORNL] [ORNL; Evans, Thomas M [ORNL] [ORNL; Davidson, Gregory G [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Fully-consistent, full-core, 3D, deterministic neutron transport simulations using the orthogonal mesh code Denovo were run on the massively parallel computing architecture Jaguar XT5. Using energy and spatial parallelization schemes, Denovo was able to efficiently scale to more than 160k processors. Cell-homogenized cross sections were used with step-characteristics, linear-discontinuous finite element, and trilinear-discontinuous finite element spatial methods. It was determined that using the finite element methods gave considerably more accurate eigenvalue solutions for large-aspect ratio meshes than using step-characteristics.

  4. Running of the SF-coupling with four massless flavours

    E-Print Network [OSTI]

    Rainer Sommer; Fatih Tekin; Ulli Wolff

    2010-11-10T23:59:59.000Z

    We discuss the status of different determinations of alpha_s, motivating a precise and reliable computation from lattice QCD. In order to suppress perturbative errors, the non-perturbative computation has to reach high energy scales mu. Such results already exist in the SF-scheme for N_f=0,2 and N_f=3. We recently added the running with four massless flavours in a range of alpha from about 0.07 to 0.3 . It is based on our recent determination of the Sheikholeslami Wohlert coefficient in the four-flavour theory.

  5. The Running coupling BFKL anomalous dimensions and splitting functions.

    E-Print Network [OSTI]

    Thorne, Robert S

    2 2 + 30.72?¯50? ) . (2.36) 14 This contribution to the splitting function for t = 6 and is shown in fig. 6.a. Note that because of the truncation of GE(N, t), beyond 6th order the expression for PLOgg (?, ?s(Q2)) is not what one would really get... .K. Abstract I explicitly calculate the anomalous dimensions and splitting functions governing the Q2 evolu- tion of the parton densities and structure functions which result from the running coupling BFKL equation at LO, i.e. I perform a resummation in powers...

  6. SSRL_2004_Run_Sched_3_22_04.xls

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited ReleaseWelcome ton n u May 23, 200122/04 Run Shutdown

  7. TianRun UILK 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCalifornia Sector:Shrenik IndustriesStateTagsTexas AreaSA JumpTianRun

  8. Brent Run Generating Station Biomass Facility | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia: EnergyAvignon,BelcherBlundellBowles,EnergyBrazil:Brent Run Generating

  9. LCLS Experimental Run Schedules | Linac Coherent Light Source

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home asLCLS Experimental Run Schedules Check-In | Computer

  10. Pleasant Run Farm, Ohio: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska: EnergyPiratini Energia S APlataforma ItaipuIowa:Plains,Run Farm,

  11. Pleasant Run, Ohio: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska: EnergyPiratini Energia S APlataforma ItaipuIowa:Plains,Run

  12. Dry Run, Ohio: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, New Jersey: EnergyDrewDrillingProject (2) JumpRun,

  13. Alcator C-MOD Runs for CY 2015

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP RelatedCellulase C. bescii CelA, adefaultRuns for CY 2015

  14. Birch Run, Michigan: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouthby 2022 | OpenEI Community BiomassRun, Michigan: Energy

  15. Lensless Magneto-optic speed sensor

    DOE Patents [OSTI]

    Veeser, Lynn R. (Los Alamos, NM); Forman, Peter R. (Los Alamos, NM); Rodriguez, Patrick J. (Santa Fe, NM)

    1998-01-01T23:59:59.000Z

    Lensless magneto-optic speed sensor. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 .mu.m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation.

  16. Lensless magneto-optic speed sensor

    DOE Patents [OSTI]

    Veeser, L.R.; Forman, P.R.; Rodriguez, P.J.

    1998-02-17T23:59:59.000Z

    Lensless magneto-optic speed sensor is disclosed. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 {micro}m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation. 5 figs.

  17. The Speed of Sound in Hadronic Matter

    E-Print Network [OSTI]

    Castorina, P; Miller, D E; Satz, H

    2009-01-01T23:59:59.000Z

    We calculate the speed of sound $c_s$ in an ideal gas of resonances whose mass spectrum is assumed to have the Hagedorn form $\\rho(m) \\sim m^{-a}\\exp{bm}$, which leads to singular behavior at the critical temperature $T_c = 1/b$. With $a = 4$ the pressure and the energy density remain finite at $T_c$, while the specific heat diverges there. As a function of the temperature the corresponding speed of sound initially increases similarly to that of an ideal pion gas until near $T_c$ where the resonance effects dominate causing $c_s$ to vanish as $(T_c - T)^{1/4}$. In order to compare this result to the physical resonance gas models, we introduce an upper cut-off M in the resonance mass integration. Although the truncated form still decreases somewhat in the region around $T_c$, the actual critical behavior in these models is no longer present.

  18. How genealogies are affected by the speed of evolution

    E-Print Network [OSTI]

    Éric Brunet; Bernard Derrida

    2011-07-12T23:59:59.000Z

    In a series of recent works it has been shown that a class of simple models of evolving populations under selection leads to genealogical trees whose statistics are given by the Bolthausen-Sznitman coalescent rather than by the well known Kingman coalescent in the case of neutral evolution. Here we show that when conditioning the genealogies on the speed of evolution, one finds a one parameter family of tree statistics which interpolates between the Bolthausen-Sznitman and Kingman's coalescents. This interpolation can be calculated explicitly for one specific version of the model, the exponential model. Numerical simulations of another version of the model and a phenomenological theory indicate that this one-parameter family of tree statistics could be universal. We compare this tree structure with those appearing in other contexts, in particular in the mean field theory of spin glasses.

  19. How genealogies are affected by the speed of evolution

    E-Print Network [OSTI]

    Brunet, Éric

    2011-01-01T23:59:59.000Z

    In a series of recent works it has been shown that a class of simple models of evolving populations under selection leads to genealogical trees whose statistics are given by the Bolthausen-Sznitman coalescent rather than by the well known Kingman coalescent in the case of neutral evolution. Here we show that when conditioning the genealogies on the speed of evolution, one finds a one parameter family of tree statistics which interpolates between the Bolthausen-Sznitman and Kingman's coalescents. This interpolation can be calculated explicitly for one specific version of the model, the exponential model. Numerical simulations of another version of the model and a phenomenological theory indicate that this one-parameter family of tree statistics could be universal. We compare this tree structure with those appearing in other contexts, in particular in the mean field theory of spin glasses.

  20. From light-speed state to the rest: new representation for energy-momentum

    E-Print Network [OSTI]

    Robert M. Yamaleev

    2009-05-02T23:59:59.000Z

    In this paper, we introduce a new concept of rapidity and define formulae for energy and momentum as functions of the new rapidity, we denominate "counter-rapidity". The correspoding velocity is measured from the state of light speed in direction to the rest state. This theory admits correct limit of Dirac equation at the zero-mass point and explain violation of the parity at this point. We show that the velocity of the particle near light-speed is quantized. With the new concept of rapidity are related a new group of transformations and new link between relativistic dynamics and hyperbolic geometry.

  1. Modeling torque versus speed, shot noise, and rotational diffusion of the bacterial flagellar motor

    E-Print Network [OSTI]

    Thierry Mora; Howard Yu; Ned S. Wingreen

    2009-10-05T23:59:59.000Z

    We present a minimal physical model for the flagellar motor that enables bacteria to swim. Our model explains the experimentally measured torque-speed relationship of the proton-driven E. coli motor at various pH and temperature conditions. In particular, the dramatic drop of torque at high rotation speeds (the "knee") is shown to arise from saturation of the proton flux. Moreover, we show that shot noise in the proton current dominates the diffusion of motor rotation at low loads. This suggests a new way to probe the discreteness of the energy source, analogous to measurements of charge quantization in superconducting tunnel junctions.

  2. Stabilizing sliding mode control design and application for a dc motor: Speed control

    E-Print Network [OSTI]

    Rhif, Ahmed

    2012-01-01T23:59:59.000Z

    The regulation by sliding mode control (SMC) is recognized for its qualities of robustness and dynamic response. This article will briefly talk about the regulation principles by sliding mode as well as the application of this approach to the adjustment of a speed control DC motor bench using the TY36A/EV unit. This unit, from Electronica Veneta products, uses a PID controller to control the speed and position of the DC motor. Our purpose is to improve the set time answer and the robustness of the system when disturbances take place. The experimental results show very good performances of the proposed approach relatively to the PID.

  3. Solar-cycle variation of the sound-speed asphericity from GONG and MDI data 1995-2000

    E-Print Network [OSTI]

    H. M. Antia; S. Basu; F. Hill; R. Howe; R. W. Komm; J. Schou

    2001-09-19T23:59:59.000Z

    We study the variation of the frequency splitting coefficients describing the solar asphericity in both GONG and MDI data, and use these data to investigate temporal sound-speed variations as a function of both depth and latitude during the period from 1995-2000 and a little beyond. The temporal variations in even splitting coefficients are found to be correlated to the corresponding component of magnetic flux at the solar surface. We confirm that the sound-speed variations associated with the surface magnetic field are superficial. Temporally averaged results show a significant excess in sound speed around 0.92 solar radii and latitude of 60 degrees.

  4. Hi-Q Rotor - Low Wind Speed Technology

    SciTech Connect (OSTI)

    Todd E. Mills; Judy Tatum

    2010-01-11T23:59:59.000Z

    The project objective was to optimize the performance of the Hi-Q Rotor. Early research funded by the California Energy Commission indicated the design might be advantageous over state-of-the-art turbines for collecting wind energy in low wind conditions. The Hi-Q Rotor is a new kind of rotor targeted for harvesting wind in Class 2, 3, and 4 sites, and has application in areas that are closer to cities, or 'load centers.' An advantage of the Hi-Q Rotor is that the rotor has non-conventional blade tips, producing less turbulence, and is quieter than standard wind turbine blades which is critical to the low-wind populated urban sites. Unlike state-of-the-art propeller type blades, the Hi-Q Rotor has six blades connected by end caps. In this phase of the research funded by DOE's Inventions and Innovation Program, the goal was to improve the current design by building a series of theoretical and numeric models, and composite prototypes to determine a best of class device. Development of the rotor was performed by aeronautical engineering and design firm, DARcorporation. From this investigation, an optimized design was determined and an 8-foot diameter, full-scale rotor was built and mounted using a Bergey LX-1 generator and furling system which were adapted to support the rotor. The Hi-Q Rotor was then tested side-by-side against the state-of-the-art Bergey XL-1 at the Alternative Energy Institute's Wind Test Center at West Texas State University for six weeks, and real time measurements of power generated were collected and compared. Early wind tunnel testing showed that the cut-in-speed of the Hi-Q rotor is much lower than a conventional tested HAWT enabling the Hi-Q Wind Turbine to begin collecting energy before a conventional HAWT has started spinning. Also, torque at low wind speeds for the Hi-Q Wind Turbine is higher than the tested conventional HAWT and enabled the wind turbine to generate power at lower wind speeds. Based on the data collected, the results of our first full-scale prototype wind turbine proved that higher energy can be captured at lower wind speeds with the new Hi-Q Rotor. The Hi-Q Rotor is almost 15% more productive than the Bergey from 6 m/s to 8 m/s, making it ideal in Class 3, 4, and 5 wind sites and has application in the critical and heretofore untapped areas that are closer to cities, 'load centers,' and may even be used directly in urban areas. The additional advantage of the Hi-Q Rotor's non-conventional blade tips, which eliminates most air turbulence, is noise reduction which makes it doubly ideal for populated urban areas. Hi-Q Products recommends one final stage of development to take the Hi-Q Rotor through Technology Readiness Levels 8-9. During this stage of development, the rotor will be redesigned to further increase efficiency, match the rotor to a more suitable generator, and lower the cost of manufacturing by redesigning the structure to allow for production in larger quantities at lower cost. Before taking the rotor to market and commercialization, it is necessary to further optimize the performance by finding a better generator and autofurling system, ones more suitable for lower wind speeds and rpms should be used in all future testing. The potential impact of this fully developed technology will be the expansion and proliferation of energy renewal into the heretofore untapped Class 2, 3, 4, and 5 Wind Sites, or the large underutilized sites where the wind speed is broken by physical features such as mountains, buildings, and trees. Market estimates by 2011, if low wind speed technology can be developed are well above: 13 million homes, 675,000 commercial buildings, 250,000 public facilities. Estimated commercial exploitation of the Hi-Q Rotor show potential increase in U.S. energy gained through the clean, renewable wind energy found in low and very low wind speed sites. This new energy source would greatly impact greenhouse emissions as well as the public sector's growing energy demands.

  5. Observed and CAM3 GCM Sea Surface Wind Speed Distributions: Characterization, Comparison, and Bias Reduction

    E-Print Network [OSTI]

    Capps, Scott B; Zender, Charles S

    2008-01-01T23:59:59.000Z

    bin predictions. and 90th percentile wind speeds and higherWind speed mean, 90th percentile, standard deviation, andwind speed mean, 90th percentile, standard deviation, and

  6. Recompile if your codes run into MPICH error after the maintenance...

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

    Recompile if your codes run into MPICH errors after the maintenance on 6252014 Recompile if your codes run into MPICH error after the maintenance on 6252014 June 27, 2014 (0...

  7. If your codes run much slower than before the maintenance on...

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

    codes run much slower after the maintenance on 62514 If your codes hang or run much slower after the maintenance on 62514 June 27, 2014 (0 Comments) During the maintenance on...

  8. SEARCHES FOR GRAVITATIONAL WAVES FROM KNOWN PULSARS WITH SCIENCE RUN 5 LIGO DATA

    E-Print Network [OSTI]

    Bodiya, Timothy Paul

    We present a search for gravitational waves from 116 known millisecond and young pulsars using data from the fifth science run of the LIGO detectors. For this search, ephemerides overlapping the run period were obtained ...

  9. Would You Consider Driving a Vehicle that Can Run on Biodiesel...

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

    Would You Consider Driving a Vehicle that Can Run on Biodiesel? Would You Consider Driving a Vehicle that Can Run on Biodiesel? September 16, 2010 - 7:30am Addthis On Monday,...

  10. The Apollo Number: space suits, self-support, and the walk-run

    E-Print Network [OSTI]

    McGee, Jeremy

    Background: How space suits affect the preferred walk-run transition is an open question with relevance to human biomechanics and planetary extravehicular activity. Walking and running energetics differ; in reduced gravity ...

  11. 2015 ACI National Home Performance Conference and Trade Show...

    Office of Environmental Management (EM)

    2015 ACI National Home Performance Conference and Trade Show 2015 ACI National Home Performance Conference and Trade Show May 4, 2015 9:00AM EDT to May 7, 2015 5:0...

  12. New Geothermal Prospects in the Western United States Show Promise...

    Energy Savers [EERE]

    New Geothermal Prospects in the Western United States Show Promise New Geothermal Prospects in the Western United States Show Promise February 27, 2013 - 2:21pm Addthis New...

  13. Sandia National Laboratories: New Material Tests Show Biaxial...

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

    Material Tests Show Biaxial Laminate Creep Is Important for Large Wind-Turbine Blades New Material Tests Show Biaxial Laminate Creep Is Important for Large Wind-Turbine Blades...

  14. Power Systems Development Facility Gasification Test Run TC09

    SciTech Connect (OSTI)

    Southern Company Services

    2002-09-30T23:59:59.000Z

    This report discusses Test Campaign TC09 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier during TC09 in air- and oxygen-blown modes. Test Run TC09 was started on September 3, 2002, and completed on September 26, 2002. Both gasifier and PCD operations were stable during the test run, with a stable baseline pressure drop. The oxygen feed supply system worked well and the transition from air to oxygen was smooth. The gasifier temperature varied between 1,725 and 1,825 F at pressures from 125 to 270 psig. The gasifier operates at lower pressure during oxygen-blown mode due to the supply pressure of the oxygen system. In TC09, 414 hours of solid circulation and over 300 hours of coal feed were attained with almost 80 hours of pure oxygen feed.

  15. The ATLAS Trigger System: Ready for Run-2

    E-Print Network [OSTI]

    Nakahama, Yu; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS trigger has been used very successfully for the online event selection during the first run of the LHC between 2009-2013 at a centre-of-mass energy between 900 GeV and 8 TeV. The trigger system consists of a hardware Level-1 (L1) and a software based high-level trigger (HLT) that reduces the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of a few hundred Hz. During the next data-taking period starting in early 2015 (Run-2) the LHC will operate at a centre-of-mass energy of about 13 TeV resulting in roughly five times higher trigger rates. We will review the upgrades to the ATLAS Trigger system that have been implemented during the shutdown and that will allow us to cope with these increased trigger rates while maintaining or even improving our efficiency to select relevant physics processes. This includes changes to the L1 calorimeter trigger, the introduction of a new L1 topological trigger module, improvements in the L1 muon system and the merging of the prev...

  16. High-energy scattering in the saturation regime including running coupling and rare fluctuation effects

    SciTech Connect (OSTI)

    Xiang Wenchang [Fakultaet fuer Physik, Universitaet Bielefeld, D-33501 Bielefeld (Germany)

    2009-01-01T23:59:59.000Z

    The analytic form of the asymptotic behavior of the S matrix in the saturation regime including the running coupling is obtained. To get this result, we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  17. High energy scattering in the saturation regime including running coupling and rare fluctuation effects

    E-Print Network [OSTI]

    Wenchang Xiang

    2008-09-16T23:59:59.000Z

    The analytic result for the $S$-matrix in the saturation regime including the running coupling is obtained. To get this result we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  18. The Apollo Number: Space Suits, Self-Support, and the Walk-Run Transition

    E-Print Network [OSTI]

    Carr, Christopher E.

    Background: How space suits affect the preferred walk-run transition is an open question with relevance to human

  19. SOUND-SPEED INVERSION OF THE SUN USING A NONLOCAL STATISTICAL CONVECTION THEORY

    SciTech Connect (OSTI)

    Zhang Chunguang; Deng Licai [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Xiong Darun [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Christensen-Dalsgaard, Jorgen, E-mail: cgzhang@nao.cas.cn [Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)

    2012-11-01T23:59:59.000Z

    Helioseismic inversions reveal a major discrepancy in sound speed between the Sun and the standard solar model just below the base of the solar convection zone. We demonstrate that this discrepancy is caused by the inherent shortcomings of the local mixing-length theory adopted in the standard solar model. Using a self-consistent nonlocal convection theory, we construct an envelope model of the Sun for sound-speed inversion. Our solar model has a very smooth transition from the convective envelope to the radiative interior, and the convective energy flux changes sign crossing the boundaries of the convection zone. It shows evident improvement over the standard solar model, with a significant reduction in the discrepancy in sound speed between the Sun and local convection models.

  20. Pantexans run against hunger | National Nuclear Security Administration

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTestPhysics Lab

  1. Queueing & Running Jobs | Argonne Leadership Computing Facility

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase, Delivery, and StorageandQuarterly CoalC219 System

  2. Using Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance

    E-Print Network [OSTI]

    Feitelson, Dror

    that using our run-time predictor results in lower mean wait times for the workloads with higher o ered loads of the systems we are simulating.We also nd that using our run-time predictors result in mean wait timesUsing Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance Warren

  3. CITI Technical Report 93-1 Long Running Jobs in an Authenticated Environment

    E-Print Network [OSTI]

    Michigan, University of

    . An unfortunate byproduct of building Kerberos-based systems is a loss of functionality, such as long running jobs-- -- CITI Technical Report 93-1 Long Running Jobs in an Authenticated Environment A. D. Rubin that a user have a valid token or ticket for a job to run. These tickets are issued with limited lifetimes

  4. Towards Realization of Adaptive Running of a Quadruped Robot Using Delayed Feedback Control

    E-Print Network [OSTI]

    Kimura, Hiroshi

    the following results: 1) When a robot runs on flat terrain without disturbance causing energy loss, the selfTowards Realization of Adaptive Running of a Quadruped Robot Using Delayed Feedback Control Zu and efficient running on flat and rough ter- rain. The Rush robot is a compact, kneed, four legged machine

  5. Ambiguity in running spectral index with an extra light field during inflation

    E-Print Network [OSTI]

    Kazunori Kohri; Tomohiro Matsuda

    2015-01-15T23:59:59.000Z

    At the beginning of inflation there could be extra dynamical scalar fields that will soon disappear (become static) before the end of inflation. In the light of multi-field inflation, those extra degrees of freedom may alter the time-dependence of the original spectrum of the curvature perturbation. It is possible to remove such fields introducing extra number of e-foldings prior to $N_e\\sim 60$, however such extra e-foldings may make the trans-Planckian problem worse due to the Lyth bound. We show that such extra scalar fields can change the running of the spectral index to give correction of $\\pm 0.01$ without adding significant contribution to the spectral index. The corrections to the spectral index (and the amplitude) could be important in considering global behavior of the corrected spectrum, although they can be neglected in the estimation of the spectrum and its spectral index at the pivot scale. The ambiguity in the running of the spectral index, which could be due to such fields, can be used to nullify tension between BICEP2 and Planck experiments.

  6. Development of Fast-Running Simulation Methodology Using Neural Networks for Load Follow Operation

    SciTech Connect (OSTI)

    Seong, Seung-Hwan [Korea Atomic Energy Research Institute (Korea, Republic of); Park, Heui-Youn [Korea Atomic Energy Research Institute (Korea, Republic of); Kim, Dong-Hoon [Korea Atomic Energy Research Institute (Korea, Republic of); Suh, Yong-Suk [Korea Atomic Energy Research Institute (Korea, Republic of); Hur, Seop [Korea Atomic Energy Research Institute (Korea, Republic of); Koo, In-Soo [Korea Atomic Energy Research Institute (Korea, Republic of); Lee, Un-Chul [Seoul National University (Korea, Republic of); Jang, Jin-Wook [Seoul National University (Korea, Republic of); Shin, Yong-Chul [Yonsei University (Korea, Republic of)

    2002-05-15T23:59:59.000Z

    A new fast-running analytic model has been developed for analyzing the load follow operation. The new model was based on the neural network theory, which has the capability of modeling the input/output relationships of a nonlinear system. The new model is made up of two error back-propagation neural networks and procedures to calculate core parameters, such as the distributions and density of xenon in a quasi-steady-state core like load follow operation. One neural network is designed to retrieve the axial offset of power distribution, and the other is for reactivity corresponding to a given core condition. The training data sets for learning the neural networks in the new model are generated with a three-dimensional nodal code and, also, the measured data of the first-day test of load follow operation. Using the new model, the simulation results of the 5-day load follow test in a pressurized water reactor show a good agreement between the simulation data and the actual measured data. Required computing time for simulating a load follow operation is comparable to that of a fast-running lumped model. Moreover, the new model does not require additional engineering factors to compensate for the difference between the actual measurements and analysis results because the neural network has the inherent learning capability of neural networks to new situations.

  7. High-speed electrical motor evaluation

    SciTech Connect (OSTI)

    Not Available

    1989-02-03T23:59:59.000Z

    Under this task, MTI conducted a general review of state-of-the-art high-speed motors. The purpose of this review was to assess the operating parameters, limitations and performance of existing motor designs, and to establish commercial sources for a motor compatible with the requirements of the Brayton-cycle system. After the motor requirements were established, a list of motor types, manufacturers and designs capable of achieving the requisite performance was compiled. This list was based on an in-house evaluation of designs. Following the establishment of these options, a technical evaluation of the designs selected was conducted. In parallel with their evaluations, MTI focused on the establishment of commercial sources.

  8. Slow speed object detection for haul trucks

    SciTech Connect (OSTI)

    NONE

    2009-09-15T23:59:59.000Z

    Caterpillar integrates radar technology with its current camera based system. Caterpillar has developed the Integrated Object Detection System, a slow speed object detection system for mining haul trucks. Object detection is a system that aids the truck operator's awareness of their surroundings. The system consists of a color touch screen display along with medium- and short-range radar as well as cameras, harnesses and mounting hardware. It is integrated into the truck's Work Area Vision System (WAVS). After field testing in 2007, system commercialization began in 2008. Prototype systems are in operation in Australia, Utah and Arizona and the Integrated Object Detection System will be available in the fourth quarter of 2009 and on production trucks 785C, 789C, 793D and 797B. The article is adapted from a presentation by Mark Richards of Caterpillar to the Haulage & Loading 2009 conference, May, held in Phoenix, AZ. 1 fig., 5 photos.

  9. High Speed/ Low Effluent Process for Ethanol

    SciTech Connect (OSTI)

    M. Clark Dale

    2006-10-30T23:59:59.000Z

    n this project, BPI demonstrated a new ethanol fermentation technology, termed the High Speed/ Low Effluent (HS/LE) process on both lab and large pilot scale as it would apply to wet mill and/or dry mill corn ethanol production. The HS/LE process allows very rapid fermentations, with 18 to 22% sugar syrups converted to 9 to 11% ethanol ‘beers’ in 6 to 12 hours using either a ‘consecutive batch’ or ‘continuous cascade’ implementation. This represents a 5 to 8X increase in fermentation speeds over conventional 72 hour batch fermentations which are the norm in the fuel ethanol industry today. The ‘consecutive batch’ technology was demonstrated on a large pilot scale (4,800 L) in a dry mill corn ethanol plant near Cedar Rapids, IA (Xethanol Biofuels). The pilot demonstrated that 12 hour fermentations can be accomplished on an industrial scale in a non-sterile industrial environment. Other objectives met in this project included development of a Low Energy (LE) Distillation process which reduces the energy requirements for distillation from about 14,000 BTU/gal steam ($0.126/gal with natural gas @ $9.00 MCF) to as low as 0.40 KW/gal electrical requirements ($0.022/gal with electricity @ $0.055/KWH). BPI also worked on the development of processes that would allow application of the HS/LE fermentation process to dry mill ethanol plants. A High-Value Corn ethanol plant concept was developed to produce 1) corn germ/oil, 2) corn bran, 3) ethanol, 4) zein protein, and 5) nutritional protein, giving multiple higher value products from the incoming corn stream.

  10. Power Systems Development Facility Gasification Test Run TC10

    SciTech Connect (OSTI)

    Southern Company Services

    2002-12-30T23:59:59.000Z

    This report discusses Test Campaign TC10 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier during TC10 in air- (mainly for transitions and problematic operations) and oxygen-blown mode. Test Run TC10 was started on November 16, 2002, and completed on December 18, 2002. During oxygen-blown operations, gasifier temperatures varied between 1,675 and 1,825 F at pressures from 150 to 180 psig. After initial adjustments were made to reduce the feed rate, operations with the new fluidized coal feeder were stable with about half of the total coalfeed rate through the new feeder. However, the new fluidized-bed coal feeder proved to be difficult to control at low feed rates. Later the coal mills and original coal feeder experienced difficulties due to a high moisture content in the coal from heavy rains. Additional operational difficulties were experienced when several of the pressure sensing taps in the gasifier plugged. As the run progressed, modifications to the mills (to address processing the wet coal) resulted in a much larger feed size. This eventually resulted in the accumulation of large particles in the circulating solids causing operational instabilities in the standpipe and loop seal. Despite problems with the coal mills, coal feeder, pressure tap nozzles and the standpipe, the gasifier did experience short periods of stability during oxygenblown operations. During these periods, the syngas quality was high. During TC10, the gasifier gasified over 609 tons of Powder River Basin subbituminous coal and accumulated a total of 416 hours of coal feed, over 293 hours of which were in oxygen-blown operation. No sorbent was used during the run.

  11. MCNP speed advances for boron neutron capture therapy

    SciTech Connect (OSTI)

    Goorley, J.T.; McKinney, G.; Adams, K.; Estes, G.

    1998-04-01T23:59:59.000Z

    The Boron Neutron Capture Therapy (BNCT) treatment planning process of the Beth Israel Deaconess Medical Center-M.I.T team relies on MCNP to determine dose rates in the subject`s head for various beam orientations. In this time consuming computational process, four or five potential beams are investigated. Of these, one or two final beams are selected and thoroughly evaluated. Recent advances greatly decreased the time needed to do these MCNP calculations. Two modifications to the new MCNP4B source code, lattice tally and tracking enhancements, reduced the wall-clock run times of a typical one million source neutrons run to one hour twenty five minutes on a 200 MHz Pentium Pro computer running Linux and using the GNU FORTRAN compiler. Previously these jobs used a special version of MCNP4AB created by Everett Redmond, which completed in two hours two minutes. In addition to this 30% speedup, the MCNP4B version was adapted for use with Parallel Virtual Machine (PVM) on personal computers running the Linux operating system. MCNP, using PVM, can be run on multiple computers simultaneously, offering a factor of speedup roughly the same as the number of computers used. With two 200 MHz Pentium Pro machines, the run time was reduced to forty five minutes, a 1.9 factor of improvement over the single Linux computer. While the time of a single run was greatly reduced, the advantages associated with PVM derive from using computational power not already used. Four possible beams, currently requiring four separate runs, could be run faster when each is individually run on a single machine under Windows NT, rather than using Linux and PVM to run one after another with each multiprocessed across four computers. It would be advantageous, however, to use PVM to distribute the final two beam orientations over four computers.

  12. alfa show improved: Topics by E-print Network

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

    Policy Program Format AZ Town Hall president, Tara Jackson Reisslein, Martin 299 Seismic tomography shows that upwelling beneath Iceland is confined to the upper mantle...

  13. ORISE: Report shows nuclear engineering graduation rates on the...

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

    ORISE report shows nuclear engineering graduation rates on the rise in 2013 Number of graduate degrees expected to remain consistent, but undergraduate degrees could see decrease...

  14. Sandia Energy - Sandia Study Shows Large LNG Fires Hotter but...

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

    Study Shows Large LNG Fires Hotter but Smaller Than Expected Home Infrastructure Security News News & Events Energy Assurance Modeling Modeling & Analysis Analysis Sandia Study...

  15. abeta oligomers show: Topics by E-print Network

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

    Creek showing (Candy and Deep Purple claims) is hosted by Middle Devonian carbonate rocks in the southem Rocky Mountains oi British Columbia. The property lies near the...

  16. Sandia Energy - Biofuels Blend Right In: Researchers Show Ionic...

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

    Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks Home Renewable Energy Energy Transportation Energy Biofuels...

  17. CDF Run-II Silicon Detector: Operations and Aging

    SciTech Connect (OSTI)

    Stancari, Michelle; /Fermilab

    2011-09-10T23:59:59.000Z

    The CDF Run-II silicon microstrip detector has seen almost 12 fb{sup -1} of proton-antiproton collisions over the last 10 years. It has shown remarkable performance, with 80% of its channels still operating error-free, and only one of its eight layers approaching the operational limits for full depletion. The measured depletion voltage and signal-to-noise ratio of these sensors give unique information about the behavior of sensors irradiated slowly over a long period of time. Data from heavily irradiated, double-sided sensors excludes a monotonic electric field inside the sensor and is instead consistent with a doubly-peaked field that is lower in the center of the sensor and higher at the edges.

  18. The Effective Standard Model after LHC Run I

    E-Print Network [OSTI]

    John Ellis; Veronica Sanz; Tevong You

    2014-10-28T23:59:59.000Z

    We treat the Standard Model as the low-energy limit of an effective field theory that incorporates higher-dimensional operators to capture the effects of decoupled new physics. We consider the constraints imposed on the coefficients of dimension-6 operators by electroweak precision tests (EWPTs), applying a framework for the effects of dimension-6 operators on electroweak precision tests that is more general than the standard $S,T$ formalism, and use measurements of Higgs couplings and the kinematics of associated Higgs production at the Tevatron and LHC, as well as triple-gauge couplings at the LHC. We highlight the complementarity between EWPTs, Tevatron and LHC measurements in obtaining model-independent limits on the effective Standard Model after LHC Run~1. We illustrate the combined constraints with the example of the two-Higgs doublet model.

  19. Computer support to run models of the atmosphere. Final report

    SciTech Connect (OSTI)

    Fung, I.

    1996-08-30T23:59:59.000Z

    This research is focused on a better quantification of the variations in CO{sub 2} exchanges between the atmosphere and biosphere and the factors responsible for these exchangers. The principal approach is to infer the variations in the exchanges from variations in the atmospheric CO{sub 2} distribution. The principal tool involves using a global three-dimensional tracer transport model to advect and convect CO{sub 2} in the atmosphere. The tracer model the authors used was developed at the Goddard institute for Space Studies (GISS) and is derived from the GISS atmospheric general circulation model. A special run of the GCM is made to save high-frequency winds and mixing statistics for the tracer model.

  20. The SF running coupling with four flavours of staggered quarks

    E-Print Network [OSTI]

    P. Perez-Rubio; S. Sint

    2007-10-03T23:59:59.000Z

    In order to study the running coupling in four-flavour QCD, we review the set-up of the Schr\\"odinger functional (SF) with staggered quarks. Staggered quarks require lattices which, in the usual counting, have even spatial lattice extent $L/a$ while the time extent $T/a$ must be odd. Setting $T=L$ is therefore only possible up to ${\\rm O}(a)$, which introduces different cutoff effects already in the pure gauge theory. We re-define the SF such as to cope with this situation and determine the corresponding classical background field. A perturbative calculation yields the coefficient of the pure gauge ${\\rm O}(a)$ boundary counterterm to one-loop order.

  1. Primary lead smelter, Doe Run, Herculaneum, Missouri (kit)

    SciTech Connect (OSTI)

    NONE

    1999-08-01T23:59:59.000Z

    The United States Environmental Protection Agency`s (EPA) Emission Standards Division (ESD) is investigating the primary lead smelting source category to identify and quantify organic hazardous air pollutants (HAPs) emitted from blast furnaces. The primary objective was to obtain data on the emissions of volatile and semi-volatile organic HAPs, aldehydes, and ketones from primary lead smelter blast furnaces. A secondary objective was to obtain data on the emissions of carbon monoxide. The data will be used by ESD to determine whether organic HAPs are emitted at levels that would justify regulation under the Maximum Achievable Control Technology (MACT) program. The Doe Run Company, which operates a primary lead smelter in Herculaneum, Missouri was selected by the ESD as the host facility for this project.

  2. Understanding the Poor Resolution from Test Beam RunUnderstanding the Poor Resolution from Test Beam Run 2004 Straw Test beam results2004 Straw Test beam results

    E-Print Network [OSTI]

    1 Understanding the Poor Resolution from Test Beam RunUnderstanding the Poor Resolution from Test Beam Run aah #12;2 2004 Straw Test beam results2004 Straw Test beam results ! Doc # 3308 v#3 by A. Ledovskoy " Using Data from 2004 Test Beam " Used "triplet" method for beam nominally perpendicular to Straw

  3. Seasoning of plasma etching reactors: Ion energy distributions to walls and real-time and run-to-run control strategies

    E-Print Network [OSTI]

    Kushner, Mark

    Seasoning of plasma etching reactors: Ion energy distributions to walls and real-time and run-to-run control strategies Ankur Agarwala Department of Chemical and Biomolecular Engineering, University etching often depends on the conditioning of the inside surfaces of the reactor. Passivation of reactor

  4. Abstract--This paper addresses the problem of interaction between short run and long run locational signals and the coordination between generation investments and lumpy transmission

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The short run locational signals we evaluate are sent by nodal pricing and the long run ones are sent-known marginal pricing to expand both generation and transmission capacity (Crew et al., 1995; Stoft, 2006). One the marginal transmission capacity cost with marginal congestion cost. Nodal pricing as market-based pricing

  5. Power Systems Development Facility Gasification Test Run TC08

    SciTech Connect (OSTI)

    Southern Company Services

    2002-06-30T23:59:59.000Z

    This report discusses Test Campaign TC08 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier in air- and oxygen-blown modes during TC08. Test Run TC08 was started on June 9, 2002 and completed on June 29. Both gasifier and PCD operations were stable during the test run with a stable baseline pressure drop. The oxygen feed supply system worked well and the transition from air to oxygen blown was smooth. The gasifier temperature was varied between 1,710 and 1,770 F at pressures from 125 to 240 psig. The gasifier operates at lower pressure during oxygen-blown mode due to the supply pressure of the oxygen system. In TC08, 476 hours of solid circulation and 364 hours of coal feed were attained with 153 hours of pure oxygen feed. The gasifier and PCD operations were stable in both enriched air and 100 percent oxygen blown modes. The oxygen concentration was slowly increased during the first transition to full oxygen-blown operations. Subsequent transitions from air to oxygen blown could be completed in less than 15 minutes. Oxygen-blown operations produced the highest synthesis gas heating value to date, with a projected synthesis gas heating value averaging 175 Btu/scf. Carbon conversions averaged 93 percent, slightly lower than carbon conversions achieved during air-blown gasification.

  6. SNe Data Analysis in Variable Speed of Light Cosmologies without Cosmological Constant

    E-Print Network [OSTI]

    Peng-fei Zhang; Xin-he Meng

    2014-04-30T23:59:59.000Z

    In this work, we aim to show the possibilities of the variable speed of light (VSL) theory in explaining the type Ia supernovae observations without introducing dark energy. The speed of light is assumed to be scale factor dependent, which is the most popular assumption in VSL theory. We show the modified calculation of the distance modulus, and the validity of the redshift-scale factor relation in VSL theory. Three different models of VSL are tested SNe data-sets with proper constraints on the model parameters. The comparison of the three models and flat $\\Lambda$CDM in distance modulus is showed. Some basic problems and the difficulties of the confirmation of the VSL theory are also discussed

  7. Wave Speed in the Macroscopic Extended Model for Ultrarelativistic Gases

    E-Print Network [OSTI]

    F. Borghero; F. Demontis; S. Pennisi

    2010-12-07T23:59:59.000Z

    An exact macroscopic extended model for ultrarelativistic gases, with an arbitrary number of moments, is present in the literature. Here we exploit equations determining wave speeds for that model. We find interesting results; for example, the whole system for their determination can be divided into independent subsystems and some, but not all, wave speeds are expressed by rational numbers. Moreover, the extraordinary property that these wave speeds for the macroscopic model are the same of those in the kinetic model, is proved.

  8. Correlation of flame speed with stretch in turbulent premixed methane/air flames

    SciTech Connect (OSTI)

    Chen, J.H.; Im, H.G.

    1998-03-01T23:59:59.000Z

    Direct numerical simulations of two-dimensional unsteady premixed methane/air flames are performed to determine the correlation of flame speed with stretch over a wide range of curvatures and strain rates generated by intense two-dimensional turbulence. Lean and stoichiometric premixtures are considered with a detailed C{sub 1}-mechanism for methane oxidation. The computed correlation shows the existence of two distinct stable branches. It further shows that exceedingly large negative values of stretch can be obtained solely through curvature effects which give rise to an overall nonlinear correlation of the flame speed with stretch. Over a narrower stretch range, {minus}1 {le} Ka {le} 1, which includes 90% of the sample, the correlation is approximately linear, and hence, the asymptotic theory for stretch is practically applicable. Overall, one-third of the sample has negative stretch. In this linear range, the Markstein number associated with the positive branch is determined and is consistent with values obtained from comparable steady counterflow computations. In addition to this conventional positive branch, a negative branch is identified. This negative branch occurs when a flame cusp, with a center of curvature in the burnt gases, is subjected to intense compressive strain, resulting in a negative displacement speed. Negative flame speeds are also encountered for extensive tangential strain rates exceeding a Karlovitz number of unity, a value consistent with steady counterflow computations.

  9. Variable current speed controller for eddy current motors

    DOE Patents [OSTI]

    Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.

    1982-03-12T23:59:59.000Z

    A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.

  10. New process speeds conversion of biomass to fuels

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

    Conversion of Biomass to Fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into...

  11. automatic speed control: Topics by E-print Network

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

    INITIAL BUOYANCY TESTING modules for automatic control of freeboard and turbine operation are denoted Buoyancy' and Generators 12 Optimal Pitch, Speed and Fuel Control...

  12. adjustable speed ac: Topics by E-print Network

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

    of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives Renewable Energy Websites Summary: 's transition into single-phase operation,...

  13. ac adjustable speed: Topics by E-print Network

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

    of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives Renewable Energy Websites Summary: 's transition into single-phase operation,...

  14. Advanced Variable Speed Air-Source Integrated Heat Pump 2013...

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

    Pump 2013 Peer Review Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Emerging Technologies Project for the 2013 Building Technologies Office's Program...

  15. Nationwide: Slashing Red Tape To Speed Solar Deployment for Homes...

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

    Slashing Red Tape To Speed Solar Deployment for Homes and Businesses While solar panels, inverters and other hardware are more affordable than ever before (the average cost of...

  16. aircraft by speed: Topics by E-print Network

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

    model of a commercial aircraft Fernandez, Thomas 5 Aircraft deconfliction with speed regulation: new models from mixed-integer optimization Computer Technologies and...

  17. Vehicle Technologies Office Merit Review 2014: High Speed Joining...

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

    Speed Joining of Dissimilar Alloy Aluminum Tailor Welded Blanks ITP Aluminum: Aluminum Industry Roadmap for the Automotive Market (May 1999) Vehicle Technologies Office: 2013...

  18. Considering removing "Show Preview" button on utility rate form...

    Open Energy Info (EERE)

    Rmckeel's picture Submitted by Rmckeel(297) Contributor 22 April, 2013 - 13:55 Utility Rates I'm considering removing the "Show Preview" button, since it does not work (javascript...

  19. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

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

    Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported...

  20. acid show improved: Topics by E-print Network

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

    Marton 2001-01-01 8 ATOC 3500CHEM 3151 Problem 11, Spring 2014 We Didn't Get Much into Acid Rain...this shows how rainwater is naturally Geosciences Websites Summary: ATOC 3500...

  1. Biological Monitoring at Amchitka Appears to Show Impacts from...

    Energy Savers [EERE]

    of the monitoring showed that Dolly Varden (a type of freshwater char, a trout-like fish), rockweed (littoral-zone algae), and to a lesser extent, Irish Lord (a small...

  2. Conference shows high school girls their scientific future |...

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

    Division, speaks with event attendees. Click to enlarge. Conference shows high school girls their scientific future By Justin H.S. Breaux * April 7, 2014 Tweet EmailPrint...

  3. Secretary Chu Speaks at the 2010 Washington Auto Show

    Broader source: Energy.gov [DOE]

    at the 2010 Washington Auto Show, Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need. He also announced that the Department of Energy had...

  4. New Report Shows Trend Toward Larger Offshore Wind Systems, with...

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

    Energy Department today released a new report showing progress for the U.S. offshore wind energy market in 2012, including the completion of two commercial lease auctions for...

  5. Use of Preventative and Therapeutic Drugs in Show Market Animals

    E-Print Network [OSTI]

    Faries Jr., Floron C.

    2001-03-12T23:59:59.000Z

    Various medicines are used in show market livestock and poultry, but exhibitors must ensure that the carcasses do not contain illegal residues of drugs, chemicals and feed additives. Only approved substances should be used. Illegal uses of drugs...

  6. Global Climate Change Assessment Report Shows Nations Not Doing...

    Open Energy Info (EERE)

    Global Climate Change Assessment Report Shows Nations Not Doing Enough Home > Blogs > Dc's blog Dc's picture Submitted by Dc(107) Contributor 5 November, 2014 - 14:49 The latest...

  7. High speed exhaust gas recirculation valve

    DOE Patents [OSTI]

    Fensom, Rod (Peterborough, GB); Kidder, David J. (Peterborough, GB)

    2005-01-18T23:59:59.000Z

    In order to minimize pollutants such as Nox, internal combustion engines typically include an exhaust gas recirculation (EGR) valve that can be used to redirect a portion of exhaust gases to an intake conduit, such as an intake manifold, so that the redirected exhaust gases will be recycled. It is desirable to have an EGR valve with fast-acting capabilities, and it is also desirable to have the EGR valve take up as little space as possible. An exhaust gas recirculation valve is provided that includes an exhaust passage tube, a valve element pivotally mounted within the exhaust passage tube, a linear actuator; and a gear train. The gear train includes a rack gear operatively connected to the linear actuator, and at least one rotatable gear meshing with the rack gear and operatively connected to the valve element to cause rotation of the valve element upon actuation of the linear actuator. The apparatus provides a highly compact package having a high-speed valve actuation capability.

  8. High speed point derivative microseismic detector

    DOE Patents [OSTI]

    Uhl, James Eugene (Albuquerque, NM); Warpinski, Norman Raymond (Albuquerque, NM); Whetten, Ernest Blayne (Albuquerque, NM)

    1998-01-01T23:59:59.000Z

    A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves.

  9. High speed point derivative microseismic detector

    DOE Patents [OSTI]

    Uhl, J.E.; Warpinski, N.R.; Whetten, E.B.

    1998-06-30T23:59:59.000Z

    A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves. 9 figs.

  10. Method for compression of data using single pass LZSS and run-length encoding

    DOE Patents [OSTI]

    Berlin, G.J.

    1994-01-01T23:59:59.000Z

    A method used preferably with LZSS-based compression methods for compressing a stream of digital data. The method uses a run-length encoding scheme especially suited for data strings of identical data bytes having large run-lengths, such as data representing scanned images. The method reads an input data stream to determine the length of the data strings. Longer data strings are then encoded in one of two ways depending on the length of the string. For data strings having run-lengths less than 18 bytes, a cleared offset and the actual run-length are written to an output buffer and then a run byte is written to the output buffer. For data strings of 18 bytes or longer, a set offset and an encoded run-length are written to the output buffer and then a run byte is written to the output buffer. The encoded run-length is written in two parts obtained by dividing the run length by a factor of 255. The first of two parts of the encoded run-length is the quotient; the second part is the remainder. Data bytes that are not part of data strings of sufficient length are written directly to the output buffer.

  11. Lower Three Runs Remediation Safety Preparation Strategy - 13318

    SciTech Connect (OSTI)

    Mackay, Alexander; Fryar, Scotty; Doane, Alan [United States Department of Energy, Building 730-B, Aiken, SC 29808 (United States)] [United States Department of Energy, Building 730-B, Aiken, SC 29808 (United States)

    2013-07-01T23:59:59.000Z

    The Savannah River Site (SRS) is a 310-square-mile United States Department of Energy (US DOE) nuclear facility located along the Savannah River near Aiken, South Carolina that contains six primary stream/river systems. The Lower Three Runs Stream (LTR) is one of the primary streams within the site that is located in the southeast portion of the Savannah River Site. It is a large blackwater stream system that originates in the northeast portion of SRS and follows a southerly direction before it enters the Savannah River. During reactor operations, secondary reactor cooling water, storm sewer discharges, and miscellaneous wastewater was discharged and contaminated a 20 mile stretch of Lower Three Runs Stream that narrows and provides a limited buffer of US DOE property along the stream and flood-plain. Based on data collected during the years 2009 and 2010 under American Recovery and Re-investment Act funding, the stream was determined to be contaminated with cesium-137 at levels that exceeded acceptable risk based limits. In agreement with the Environmental Protection Agency and the South Carolina Department of Health and Environmental Control, three areas were identified for remediation [1] (SRNS April 2012). A comprehensive safety preparation strategy was developed for safe execution of the LTR remediation project. Contract incentives for safety encouraged the contractor to perform a complete evaluation of the work and develop an implementation plan to perform the work. The safety coverage was controlled to ensure all work was observed and assessed by one person per work area within the project. This was necessary due to the distances between the fence work and three transects being worked, approximately 20 miles. Contractor Management field observations were performed along with DOE assessments to ensure contractor focus on safe performance of the work. Dedicated ambulance coverage for remote worker work activities was provided. This effort was augmented with access to medical evacuation services. The areas where the work was performed were remote and difficult to get emergency vehicles to in a timely manner in case of an accident. Satellite phones were utilized due to intermittent phone coverage. High visibility vests were utilized to enable any hunters in the area to see the workers; due to the limited buffer areas along the stream route. An innovative approach to providing the necessary protection for workers during periods of extreme heat and humidity was also employed, which included the use of 'heat islands' with fans and crew trailers and ice vests for workers. (authors)

  12. Calibrating Speed-Density Functions for ff SMesoscopic Traffic Simulation

    E-Print Network [OSTI]

    Bertini, Robert L.

    . (1999), Tavana & Mahmassani (2000), Wang & Papageorgiou (2005), Antoniou et al. (2007) #12;Case Studies) supply #12;Case Studies (contd.) · DynaMIT speed-density function form · Performance measures ( )= - S i pointsdataofnumber speed)(count,simulated : : S iy #12;Case Studies (contd.) · Methodology ­ Large

  13. 0 Riso-R-434 Wind Speed and Direction

    E-Print Network [OSTI]

    meteorological statistics for the area as it was considered a possible site for a nuclear power plant. \\ \\ Duringm I 0 Riso-R-434 t Wind Speed and Direction Changes due to Terrain Effects revealed-4000 Roskilde, Denmark May 1983 #12;RISÃ?-R-434 WIND SPEED AND DIRECTION CHANGES DUE TO TERRAIN EFFECTS

  14. An evaluation of inductance loop detectors for speed measurement accuracy

    E-Print Network [OSTI]

    Cronin, Brian Patrick

    1994-01-01T23:59:59.000Z

    . The lag time from the presence of a vehicle at an inductance loop to the actual detection of a vehicle varies. As the lag time varies so does the accuracy of speed measurement. Vehicle size, vehicle speed, detector type, detector sensitivity...

  15. RESEARCH ARTICLE Controlling speed and direction during interception

    E-Print Network [OSTI]

    control models fail to explain two important aspects of locomotor interception: (1) how steering and speed. Turning rate was controlled using a steering wheel and speed was controlled using a foot pedal that is characteristic of visually guided interception. Like models of other visually guided actions, such as steering

  16. Multiprocessor Speed Scaling for Jobs with Arbitrary Sizes and Deadlines

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    or laptops with multi-core processors. A popular technology to reduce energy usage is dynamic speed scaling.H. Wong 1 Introduction Energy consumption has become an important concern in the design of modern energy, yet it takes longer to finish the job. The study of speed scaling was initiated by Yao et al. [6

  17. Structural vibration damping using lightweight, low-wave-speed media

    E-Print Network [OSTI]

    Verdirame, Justin Matthew, 1978-

    2007-01-01T23:59:59.000Z

    Incorporation of a low-density, low-wave-speed medium (LWSM) into a structure yields significant damping if the speed of wave propagation in the medium is low enough for standing waves to arise in it. In this thesis, we ...

  18. Probabilistic Wind Speed Forecasting Using Ensembles and Bayesian Model Averaging

    E-Print Network [OSTI]

    Raftery, Adrian

    the chance of winds high enough to pose dangers for boats or aircraft. In situations calling for a cost/loss analysis, the probabilities of different outcomes need to be known. For wind speed, this issue often arisesProbabilistic Wind Speed Forecasting Using Ensembles and Bayesian Model Averaging J. Mc

  19. High Speed Rail in America Thomas Ducharme, Matt Schena,

    E-Print Network [OSTI]

    Nagurney, Anna

    to Washington D.C. · A renewed interest in High Speed Rail Due to increased congestion Desire for cheaper emissions by 2.8 million tons o High speed trains use 1/3 the energy of planes and 1/5 that of cars · Reduce Resulting in improvement to those lines o Reducing operating costs due to sharing rail · Increase in freight

  20. Volunteers hope ORNL technology will speed Haiti's long quake recovery

    E-Print Network [OSTI]

    Pennycook, Steve

    SCIENCE Volunteers hope ORNL technology will speed Haiti's long quake recovery The multi to speed Haiti's recovery from its devastating 2010 earthquake and improve the Haitian population's overall public health by allowing quick, in-the-field diagnoses of diseases. A team of Haiti volunteers

  1. Solar wind suprathermal electron Stahl widths across high-speed stream structures

    SciTech Connect (OSTI)

    Skoug, Ruth M [Los Alamos National Laboratory; Steinberg, John T [Los Alamos National Laboratory; Goodrich, Katherine A [Los Alamos National Laboratory; Anderson, Brett R [DARTMUTH UNIV.

    2011-01-03T23:59:59.000Z

    Suprathermal electrons (100-1500 eV) observed in the solar wind typically show a strahl distribution, that is, a beam directed away from the Sun along the magnetic field direction. The strahl width observed at 1 AU is highly variable, ranging from 10-70 degrees. The obsenred finite width of the strahl results from the competition between beam focusing as the interplanetary magnetic field strength drops with distance from the Sun, and pitch-angle scattering as the beam interacts with the solar wind plasma in transit from the sun. Here we examine strahl width, observed with ACE SWEPAM across high-speed stream structures to investigate variations in electron scattering as a function of local plasma characteristics. We find that narrow strahls (less than 20 degrees wide), indicating reduced scattering, are observed within high-speed streams. Narrow strahls are also observed in both very low temperature solar wind, in association with ICMEs. Case studies of high-speed streams typically show the strahl narrowing at the leading edge of the stream. In some cases, the strahl narrows at the reverse shock or pressure wave, in other cases at the stream interface. The narrowing can either occur discontinuously or gradually over a period of hours. Within the high-speed wind, the strahl remains narrow for a period of hours to days, and then gradually broadens. The strahl width is roughly constant at all energies across these structures. For some fraction of high-speed streams, counterstreaming is associated with passage of the corotating interaction region. In these cases, we find the widths of the two counterstreaming beams frequently differ by more than 40 degrees. This dramatic difference in strahl width contrasts with observations in the solar wind as a whole, in which counterstreaming strahls typically differ in width by less than 20 degrees.

  2. ATLAS Jet Trigger Update for the LHC Run II

    E-Print Network [OSTI]

    Tavares Delgado, Ademar; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The CERN Large Hadron Collider is the biggest and most powerful particle collider ever built. It produces up to 40 million proton-proton collisions per second at unprecedented energies to explore the fundamental laws and properties of Nature. The ATLAS experiment is one of the detectors that analyses and records these collisions. It generates dozens of GB/s of data that has to be reduced before it can be permanently stored, the event selection is made by the ATLAS trigger system, which reduces the data volume by a factor of 10^5 . The trigger system has to be highly configurable in order to adapt to changing running conditions and maximize the physics output whilst keeping the output rate under control. A particularly interesting pattern generated during collisions consists of a collimated spray of particles, known as a hadronic jet. To retain the interesting jets and efficiently reject the overwhelming background, optimal jet energy resolution is needed. Therefore the Jet trigger software requires CPU-intens...

  3. WIPP Remote Handled Waste Facility: Performance Dry Run Operations

    SciTech Connect (OSTI)

    Burrington, T. P.; Britain, R. M.; Cassingham, S. T.

    2003-02-24T23:59:59.000Z

    The Remote Handled (RH) TRU Waste Handling Facility at the Waste Isolation Pilot Plant (WIPP) was recently upgraded and modified in preparation for handling and disposal of RH Transuranic (TRU) waste. This modification will allow processing of RH-TRU waste arriving at the WIPP site in two different types of shielded road casks, the RH-TRU 72B and the CNS 10-160B. Washington TRU Solutions (WTS), the WIPP Management and Operation Contractor (MOC), conducted a performance dry run (PDR), beginning August 19, 2002 and successfully completed it on August 24, 2002. The PDR demonstrated that the RHTRU waste handling system works as designed and demonstrated the handling process for each cask, including underground disposal. The purpose of the PDR was to develop and implement a plan that would define in general terms how the WIPP RH-TRU waste handling process would be conducted and evaluated. The PDR demonstrated WIPP operations and support activities required to dispose of RH-TRU waste in the WIPP underground.

  4. ATLAS LAr Calorimeter Performance and Commissioning for LHC Run-2

    E-Print Network [OSTI]

    Spettel, Fabian; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS detector was designed and built to study proton-proton colli- sions produced at the LHC at centre-of-mass energies up to 14 TeV and in- stantaneous luminosities up to $10^{34} \\text{cm}^{-2} \\text{s}^{-1}$. Liquid argon (LAr) sampling calorimeters are employed for all electromagnetic calorimetry in the pseudorapidity region $|\\eta|run a total luminosity of 27 $\\text{fb}^{-1}$ as been collected at center-of-mass energies of 7-8 TeV with very high operational efficiency of the LAr Calorimeters and excellent performance. The well calibrated and highly granular detector achieved its design values both in energy measurement as well as in direction resolution, which was a main ingredient for the successul discovery of a Higgs boson in the di-photon decay channel. The talk will give an overview of the procedures applied to calibrate the 180.000 read-out channels electronically as well as from using refe...

  5. Direct Searches for Scalar Leptoquarks at the Run II Tevatron

    SciTech Connect (OSTI)

    Ryan, Daniel E

    2004-11-01T23:59:59.000Z

    This dissertation sets new limits on the mass of the scalar leptoquark from direct searches carried out at the Run II CDF detector using data from March 2001 to October 2003. The data analyzed has a total time-integrated measured luminosity of 198 pb{sup -1} of p{bar p} collisions with {radical}s = 1.96 TeV. Leptoquarks are assumed to be pair-produced and to decay into a lepton and a quark of the same generation. They consider two possible leptoquark decays: (1) {beta} = BR(LQ {yields} {mu}q) = 1.0, and (2) {beta} = BR(LQ {yields} {mu}q) = 0.5. For the {beta} = 1 channel, they focus on the signature represented by two isolated high-p{sub T} muons and two isolated high-p{sub T} jets. For the {beta} = 1/2 channel, they focus on the signature represented by one isolated high-p{sub T} muon, large missing transverse energy, and two isolated high-p{sub T} jets. No leptoquark signal is experimentally detected for either signature. Using the next to leading order theoretical cross section for scalar leptoquark production in p{bar p} collisions [1], they set new mass limits on second generation scalar leptoquarks. They exclude the existence of second generation scalar leptoquarks with masses below 221(175) GeV/c{sup 2} for the {beta} = 1(1/2) channels.

  6. Non-Gaussianities of primordial perturbations and tensor sound speed

    E-Print Network [OSTI]

    Toshifumi Noumi; Masahide Yamaguchi

    2014-03-24T23:59:59.000Z

    We investigate the relation between the non-Gaussianities of the primordial perturbations and the sound speed of the tensor perturbations, that is, the propagation speed of the gravitational waves. We find that the sound speed of the tensor perturbations is directly related not to the auto-bispectrum of the tensor perturbations but to the cross-bispectrum of the primordial perturbations, especially, the scalar-tensor-tensor bispectrum. This result is in sharp contrast with the case of the scalar (curvature) perturbations, where their reduced sound speed enhances their auto-bispectrum. Our findings indicate that the scalar-tensor-tensor bispectrum can be a powerful tool to probe the sound speed of the tensor perturbations.

  7. Hydropower at flood control reservoirs - the variable speed option

    SciTech Connect (OSTI)

    Laurence, K.; Yale, J. [Stone & Webster Engineering Corp., Denver, CO (United States)

    1995-12-31T23:59:59.000Z

    Application of hydroelectric turbine-generators to flood control has been limited due to the inability of a single turbine to operate efficiently over the wide head and flow ranges encountered. Multiple and different unit combinations have been applied to this problem, but the cost of the additional unit(s), powerhouse, and supporting facilities typically causes the project to become unfeasible. Variable speed operation can increase the operating range of a single turbine, and significantly improve efficiency over single speed units. This can make hydroelectric generation at flood control projects feasible. This paper presents a comparison of the application of variable speed units, two speed units, and single speed units at the Blue River Dam Hydroelectric Project. The project consists of the addition of a powerhouse to an existing Army Corps of Engineers flood control project. Efficiency data for the different types of units are compared and historical flow and release data are used in a computer model to simulate plant operation.

  8. High-speed electrochemistry using ultramicroelectrodes

    SciTech Connect (OSTI)

    Walsh, M.R.

    1989-01-01T23:59:59.000Z

    This research investigates the use of ultramicroelectrodes in performing electrochemistry on microsecond and nanosecond time scales. One purpose of this research was to look at new ways to apply ultramicroelectrodes to high speed experiments. Some of the aspects that are discussed in this thesis are: (a) A novel technique was developed for measuring currents on short time scales that involves conversion of the current to light using a light emitting diode and measuring the light intensity as a function of time using time correlated single photon counting (TCSPC). Computer processing of the light intensity data can convert this data back to current. The technique is capable of measurements on nanosecond time scales, but TCSPC requires tens or hundreds of millions of experiments to obtain a complete set of data and this frequently results in severe electrode fouling problems. (b) Potential step experiments were used instead of potential sweep experiments. Potential step experiments enable the separation in time of the faradaic and charging currents for chemical systems in which the faradaic impedance is greater than the uncompensated solution resistance. (c) For systems in which the faradaic impedance and uncompensated resistance are of the same order of magnitude, a computer simulation was developed which accounts for the interaction of the faradaic and double layer charging processes. (d) Application of short time scale experiments to the study of surface processes. Some processes studied in this work are the oxidation of clean platinum surfaces, electrode reactions of anthraquinone-2,6-disulfonic acid adsorbed on mercury, reductive hydrogen adsorption on platinum and double layer charging. (e) A study of the smallest available time constants was performed, taking into account non-idealities in the electrode such as stray capacitance and resistance of the electrode itself.

  9. Surface plasmon resonance shows that type IV pili are

    E-Print Network [OSTI]

    Buckling, Angus

    REPORT Surface plasmon resonance shows that type IV pili are important in surface attachment. Here, using the surface analytical technique, surface plasmon resonance (SPR), we follow the attachment; pili; surface plasmon resonance; biofilm formation 1. INTRODUCTION Bacterial attachment is a critical

  10. Oil and gas shows in the Salina basin

    SciTech Connect (OSTI)

    Newell, K.D.; Lambert, M.; Berendsen, P.

    1989-01-01T23:59:59.000Z

    This book presents data from drillers' records and other information on the Salina basin wells in north-central Kansas. A listing that includes well name, operator, location, completion date, depth intervals, and formation name for each well is included. A map showing oil and gas fields in the surrounding area and wells drilled within the basin is offered.

  11. Fig. 1. Schematic of LDX device showing three superconducting

    E-Print Network [OSTI]

    1 Fig. 1. Schematic of LDX device showing three superconducting magnets and the plasma@psfc.mit.edu Abstract: We report the first production of high beta plasma confined by a laboratory superconducting-field superconducting dipole magnet, termed the "floating coil" was supported by three thin support rods. In this mode

  12. Quantification of evaporative running loss emissions from gasoline-powered passenger cars in California. Final report

    SciTech Connect (OSTI)

    McClement, D.

    1992-01-01T23:59:59.000Z

    The purpose of the study was to collect evaporative running emissions data from a cross section of in-use, light-duty passenger cars. Forty vehicles were procured and tested using the 'LA-4' cycle (the EPA Urban Dynamometer Driving Cycle (UDDS)) and the New York City Cycle (NYCC). The LA-4 cycle was run three times with a two minute idle period between the first two runs. The NYCC was run six times with a two minute idle between the first five runs of the cycle. Tests were performed at 95 and 105 degrees Farenheit, and using 7.5 and 9.0 Reid Vapor Pressure (RVP) fuel. The report describes two types of running losses - Type 1 where emissions are emitted at a constant, low level (typical of late model, properly operating vehicles), and Type II emissions, where there is a high rate of emissions (typical in uncontrolled vehicles).

  13. Multi-Terabyte EIDE Disk Arrays running Linux RAID5

    E-Print Network [OSTI]

    D. A. Sanders; L. M. Cremaldi; V. Eschenburg; R. Godang; M. D. Joy; D. J. Summers; D. L. Petravick

    2004-11-19T23:59:59.000Z

    High-energy physics experiments are currently recording large amounts of data and in a few years will be recording prodigious quantities of data. New methods must be developed to handle this data and make analysis at universities possible. Grid Computing is one method; however, the data must be cached at the various Grid nodes. We examine some storage techniques that exploit recent developments in commodity hardware. Disk arrays using RAID level 5 (RAID-5) include both parity and striping. The striping improves access speed. The parity protects data in the event of a single disk failure, but not in the case of multiple disk failures. We report on tests of dual-processor Linux Software RAID-5 arrays and Hardware RAID-5 arrays using a 12-disk 3ware controller, in conjunction with 250 and 300 GB disks, for use in offline high-energy physics data analysis. The price of IDE disks is now less than $1/GB. These RAID-5 disk arrays can be scaled to sizes affordable to small institutions and used when fast random access at low cost is important.

  14. The Importance of Run-time Error Detection Glenn R. Luecke 1

    E-Print Network [OSTI]

    Luecke, Glenn R.

    Iowa State University's High Performance Computing Group, Iowa State University, Ames, Iowa 50011, USA State University's High Performance Computing Group for evaluating run-time error detection capabilities

  15. Algorithmic Construction of Efficient Fractional Factorial Designs With Large Run Sizes

    E-Print Network [OSTI]

    Xu, H Q

    2007-01-01T23:59:59.000Z

    The 2 k?p Fractional Factorial Designs,” Technometrics, Box,Aberration Fractional Factorial Designs,” Biometrika, 90,Three-Level Fractional Factorial Designs With Small Runs,”

  16. Secretary Chu Speaks at the 2010 Washington Auto Show

    SciTech Connect (OSTI)

    Secretary Chu

    2010-02-03T23:59:59.000Z

    Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need at the 2010 Washington Auto Show. He also announced that the Department of Energy had closed on a $1.4 billion loan to Nissan to build the all-electric LEAF in Tennessee and create up to 1,300 American jobs.

  17. Several engine technology advances show potential in labs; Part 2

    SciTech Connect (OSTI)

    McCoy, J.J. (Tenneco Gas Co., Houston, TX (United States)); Willson, B. (Colorado State Univ., Fort Collins, CO (United States). Engines and Energy Conservation Lab.)

    1994-07-01T23:59:59.000Z

    Cutting fuel consumption and reducing emissions are dominant goals of stationary gas engine operators. Recent technology advances show promise and could result in money-saving retrofit options. Selected new technologies include sensors, actuators--defined as anything controlling the engine: fuel and ignition--and control techniques. An attractive feature of most of these technologies is that they can be retrofitting onto existing engines, allowing the potential for improved performance at a fraction of engine replacement cost. This paper describes these technologies.

  18. Secretary Chu Speaks at the 2010 Washington Auto Show

    ScienceCinema (OSTI)

    Secretary Chu

    2010-09-01T23:59:59.000Z

    Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need at the 2010 Washington Auto Show. He also announced that the Department of Energy had closed on a $1.4 billion loan to Nissan to build the all-electric LEAF in Tennessee and create up to 1,300 American jobs.

  19. FIVE KEPLER TARGET STARS THAT SHOW MULTIPLE TRANSITING EXOPLANET CANDIDATES

    SciTech Connect (OSTI)

    Steffen, Jason H. [Fermilab Center for Particle Astrophysics, P.O. Box 500, Batavia, IL 60510 (United States); Batalha, Natalie M. [Department of Astronomy and Physics, San Jose State University, San Jose, CA 95192 (United States); Borucki, William J.; Caldwell, Douglas A.; Haas, Michael J.; Jenkins, Jon M.; Koch, David; Lissauer, Jack J. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Buchhave, Lars A.; Fabrycky, Daniel C.; Fressin, Francois; Holman, Matthew J.; Latham, David W. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Cochran, William D.; Endl, Michael [McDonald Observatory, University of Texas, Austin, TX 78712-2059 (United States); Ford, Eric B.; Moorhead, Althea V. [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States); Fortney, Jonathan J. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Howell, Steve B. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Isaacson, Howard [Astronomy Department, University of California Berkeley, Berkeley, CA 9472 (United States)

    2010-12-10T23:59:59.000Z

    We present and discuss five candidate exoplanetary systems identified with the Kepler spacecraft. These five systems show transits from multiple exoplanet candidates. Should these objects prove to be planetary in nature, then these five systems open new opportunities for the field of exoplanets and provide new insights into the formation and dynamical evolution of planetary systems. We discuss the methods used to identify multiple transiting objects from the Kepler photometry as well as the false-positive rejection methods that have been applied to these data. One system shows transits from three distinct objects while the remaining four systems show transits from two objects. Three systems have planet candidates that are near mean motion commensurabilities-two near 2:1 and one just outside 5:2. We discuss the implications that multi-transiting systems have on the distribution of orbital inclinations in planetary systems, and hence their dynamical histories, as well as their likely masses and chemical compositions. A Monte Carlo study indicates that, with additional data, most of these systems should exhibit detectable transit timing variations (TTVs) due to gravitational interactions, though none are apparent in these data. We also discuss new challenges that arise in TTV analyses due to the presence of more than two planets in a system.

  20. Power Systems Development Facility Gasification Test Run TC07

    SciTech Connect (OSTI)

    Southern Company Services

    2002-04-05T23:59:59.000Z

    This report discusses Test Campaign TC07 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC07. Prior to TC07, the Transport Reactor was modified to allow operations as an oxygen-blown gasifier. Test Run TC07 was started on December 11, 2001, and the sand circulation tests (TC07A) were completed on December 14, 2001. The coal-feed tests (TC07B-D) were started on January 17, 2002 and completed on April 5, 2002. Due to operational difficulties with the reactor, the unit was taken offline several times. The reactor temperature was varied between 1,700 and 1,780 F at pressures from 200 to 240 psig. In TC07, 679 hours of solid circulation and 442 hours of coal feed, 398 hours with PRB coal and 44 hours with coal from the Calumet mine, and 33 hours of coke breeze feed were attained. Reactor operations were problematic due to instrumentation problems in the LMZ resulting in much higher than desired operating temperatures in the reactor. Both reactor and PCD operations were stable and the modifications to the lower part of the gasifier performed well while testing the gasifier with PRB coal feed.

  1. Speed-of-light limitations in passive linear media

    E-Print Network [OSTI]

    Aaron Welters; Yehuda Avniel; Steven G. Johnson

    2014-05-01T23:59:59.000Z

    We prove that well-known speed of light restrictions on electromagnetic energy velocity can be extended to a new level of generality, encompassing even nonlocal chiral media in periodic geometries, while at the same time weakening the underlying assumptions to only passivity and linearity of the medium (either with a transparency window or with dissipation). As was also shown by other authors under more limiting assumptions, passivity alone is sufficient to guarantee causality and positivity of the energy density (with no thermodynamic assumptions). Our proof is general enough to include a very broad range of material properties, including anisotropy, bianisotropy (chirality), nonlocality, dispersion, periodicity, and even delta functions or similar generalized functions. We also show that the "dynamical energy density" used by some previous authors in dissipative media reduces to the standard Brillouin formula for dispersive energy density in a transparency window. The results in this paper are proved by exploiting deep results from linear-response theory, harmonic analysis, and functional analysis that had previously not been brought together in the context of electrodynamics.

  2. Spatial and Temporal Patterns of Global Onshore Wind Speed Distribution

    SciTech Connect (OSTI)

    Zhou, Yuyu; Smith, Steven J.

    2013-09-09T23:59:59.000Z

    Wind power, a renewable energy source, can play an important role in electrical energy generation. Information regarding wind energy potential is important both for energy related modeling and for decision-making in the policy community. While wind speed datasets with high spatial and temporal resolution are often ultimately used for detailed planning, simpler assumptions are often used in analysis work. An accurate representation of the wind speed frequency distribution is needed in order to properly characterize wind energy potential. Using a power density method, this study estimated global variation in wind parameters as fitted to a Weibull density function using NCEP/CFSR reanalysis data. The estimated Weibull distribution performs well in fitting the time series wind speed data at the global level according to R2, root mean square error, and power density error. The spatial, decadal, and seasonal patterns of wind speed distribution were then evaluated. We also analyzed the potential error in wind power estimation when a commonly assumed Rayleigh distribution (Weibull k = 2) is used. We find that the assumption of the same Weibull parameter across large regions can result in substantial errors. While large-scale wind speed data is often presented in the form of average wind speeds, these results highlight the need to also provide information on the wind speed distribution.

  3. Modified Yeast Show Improved Xylose Fermentation and Toxin Tolerance -

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'. WilliamEnergy Innovation Portal Show Improved

  4. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor Domain Shows

  5. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor Domain ShowsDynein

  6. Experimental and numerical study of the accuracy of flame-speed measurements for methane/air combustion in a slot burner

    SciTech Connect (OSTI)

    Selle, L.; Ferret, B. [Universite de Toulouse, INPT, UPS, IMFT, Institut de Mecanique des Fluides de Toulouse (France); CNRS, IMFT, Toulouse (France); Poinsot, T. [Universite de Toulouse, INPT, UPS, IMFT, Institut de Mecanique des Fluides de Toulouse (France); CNRS, IMFT, Toulouse (France); CERFACS, Toulouse (France)

    2011-01-15T23:59:59.000Z

    Measuring the velocities of premixed laminar flames with precision remains a controversial issue in the combustion community. This paper studies the accuracy of such measurements in two-dimensional slot burners and shows that while methane/air flame speeds can be measured with reasonable accuracy, the method may lack precision for other mixtures such as hydrogen/air. Curvature at the flame tip, strain on the flame sides and local quenching at the flame base can modify local flame speeds and require corrections which are studied using two-dimensional DNS. Numerical simulations also provide stretch, displacement and consumption flame speeds along the flame front. For methane/air flames, DNS show that the local stretch remains small so that the local consumption speed is very close to the unstretched premixed flame speed. The only correction needed to correctly predict flame speeds in this case is due to the finite aspect ratio of the slot used to inject the premixed gases which induces a flow acceleration in the measurement region (this correction can be evaluated from velocity measurement in the slot section or from an analytical solution). The method is applied to methane/air flames with and without water addition and results are compared to experimental data found in the literature. The paper then discusses the limitations of the slot-burner method to measure flame speeds for other mixtures and shows that it is not well adapted to mixtures with a Lewis number far from unity, such as hydrogen/air flames. (author)

  7. Engine control system having speed-based timing

    DOE Patents [OSTI]

    Willi, Martin L. (Dunlap, IL); Fiveland, Scott B. (Metamora, IL); Montgomery, David T. (Edelstein, IL); Gong, Weidong (Dunlap, IL)

    2012-02-14T23:59:59.000Z

    A control system for an engine having a cylinder is disclosed having an engine valve movable to regulate a fluid flow of the cylinder and an actuator associated with the engine valve. The control system also has a controller in communication with the actuator. The controller is configured to receive a signal indicative of engine speed and compare the engine speed signal with a desired engine speed. The controller is also configured to selectively regulate the actuator to adjust a timing of the engine valve to control an amount of air/fuel mixture delivered to the cylinder based on the comparison.

  8. Critical speed measurements in the Tevatron cold compressors

    SciTech Connect (OSTI)

    DeGraff, B.; Bossert, R.; Martinez, A.; Soyars, W.M.; /Fermilab

    2006-01-01T23:59:59.000Z

    The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, manufactured by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high energy operations. Nominal operating range for these compressors is 43,000 to 85,000 rpm. Past foil bearing failures prompted investigation to determine if critical speeds for operating compressors fall within operating range. Data acquisition hardware and software settings will be discussed for measuring liftoff, first critical and second critical speeds. Several tests provided comparisons between an optical displacement probe and accelerometer measurements. Vibration data and analysis of the 20 Tevatron ring cold compressors will be presented.

  9. Effects of engine speed, fueling rate, and combustion phasing on the thermal stratification required to limit HCCI knocking intensity.

    SciTech Connect (OSTI)

    SjÞoberg, Magnus; Dec, John E.

    2004-12-01T23:59:59.000Z

    Thermal stratification has the potential to reduce pressure-rise rates and allow increased power output for HCCI engines. This paper systematically examines how the amount of thermal stratification of the core of the charge has to be adjusted to avoid excessive knock as the engine speed and fueling rate are increased. This is accomplished by a combination of multi-zone chemical-kinetics modeling and engine experiments, using iso-octane as the fuel. The experiments show that, for a low-residual engine configuration, the pressure traces are self-similar during changes to the engine speed when CA50 is maintained by adjusting the intake temperature. Consequently, the absolute pressure-rise rate measured as bar/ms increases proportionally with the engine speed. As a result, the knocking (ringing) intensity increases drastically with engine speed, unless counteracted by some means. This paper describes how adjustments of the thermal width of the in-cylinder charge can be used to limit the ringing intensity to 5 MW/m2 as both engine speed and fueling are increased. If the thermal width can be tailored without constraints, this enables smooth operation even for combinations of high speed, high load, and combustion phasing close to TDC. Since large alterations of the thermal width of the charge are not always possible, combustion retard is considered to reduce the requirement on the thermal stratification. The results show that combustion retard carries significant potential since it amplifies the benefit of a fixed thermal width. Therefore, the thermal stratification required for operation with an acceptable knocking intensity can be decreased substantially by the use of combustion retard. This enables combinations of high engine speed and high fueling rate even for operation with the naturally occurring thermal stratification. However, very precise control of the combustion phasing will likely be required for such operation.

  10. Locality hypothesis and the speed of light

    E-Print Network [OSTI]

    G. Longhi

    2006-10-11T23:59:59.000Z

    The locality hypothesis is generally considered necessary for the study of the kinematics of non-inertial systems in special relativity. In this paper we discuss this hypothesis, showing the necessity of an improvement, in order to get a more clear understanding of the various concepts involved, like coordinate velocity and standard velocity of light. Concrete examples are shown, where these concepts are discussed.

  11. Keller's model Variable energy recreation Bounding the derivative of f Optimization of running strategies based on

    E-Print Network [OSTI]

    Boyer, Edmond

    strategies based on anaerobic energy and variations of velocity J. Fr´ed´eric Bonnans Inria-Saclay and CMAP of running strategies hal-01024231,version1-15Jul2014 #12;Keller's model Variable energy recreation Bounding.F. Bonnans, Optimization of running strategies based on anaerobic energy and variations of velocity. SIAM J

  12. array-based nuclear run-on: Topics by E-print Network

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

    array-based nuclear run-on First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 RUN-ON SENTENCES What are...

  13. Running head: Eye-tracking in chimpanzees and humans 1 Research Article9

    E-Print Network [OSTI]

    Takada, Shoji

    #12;Running head: Eye-tracking in chimpanzees and humans 1 1 2 3 4 5 6 7 8 Research Article915 16 fkanou@pri.kyoto-u.ac.jp17 +81-80-6902-501318 19 #12;Running head: Eye-tracking in chimpanzees and humans 2 Abstract20 Previous studies comparing eye movements between humans and their closest relatives

  14. CLIPPER: Counter-based Low Impact Processor Power Estimation at Run-time

    E-Print Network [OSTI]

    New South Wales, University of

    -time power/energy data has been presented. Current measurement systems draw too much power to be used is dif- ficult as measurement systems for power and energy usage draw too much power themselves, making the knowledge of processor power/energy consumption at run- time. So far, no efficient method to provide run

  15. Running head: GEOTHERMAL POWER PRODUCTION 1 Geothermal Power Production for Emmonak, Alaska

    E-Print Network [OSTI]

    Scheel, David

    Running head: GEOTHERMAL POWER PRODUCTION 1 Geothermal Power Production for Emmonak, Alaska Anthony Bryant Senior Project Alaska Pacific University May 5, 2010 #12;Running head: GEOTHERMAL POWER PRODUCTION January 2009. This paper researches the possibility of using geothermal energy as an alternative energy

  16. JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR INCREASED EATING IN RATS DEPRIVED OF RUNNING'

    E-Print Network [OSTI]

    Premack, David

    JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR INCREASED EATING IN RATS DEPRIVED OF RUNNING of the wheel. When this outcome is coupled with the positive relation between food deprivation and running-and food depriva- tion is seen as a loss of eating rather than as a physiological state

  17. The gradient flow running coupling in SU2 with 8 flavors

    E-Print Network [OSTI]

    Jarno Rantaharju; Tuomas Karavirta; Viljami Leino; Teemu Rantalaiho; Kari Rummukainen; Kimmo Tuominen

    2014-11-18T23:59:59.000Z

    We present preliminary results of the gradient flow running coupling with Dirichlet boundary condition in the SU(2) gauge theory with 8 fermion flavours. Improvements to the gradient flow measurement allow us to obtain a robust continuum limit. The results are consistent with perturbative running in the weak coupling region.

  18. Timing Jitter Characterization of a Free-Running SESAM Mode-locked VECSEL

    E-Print Network [OSTI]

    Keller, Ursula

    Timing Jitter Characterization of a Free-Running SESAM Mode-locked VECSEL Volume 3, Number 4 Jitter Characterization of a Free-Running SESAM Mode-locked VECSEL V. J. Wittwer, C. A. Zaugg, W. P. Corresponding author: V. J. Wittwer (e-mail: vwittwer@phys.ethz.ch). Abstract: We present timing jitter

  19. ORNL/TM-2003/259 RUNNING OUT OF AND INTO OIL

    E-Print Network [OSTI]

    ORNL/TM-2003/259 RUNNING OUT OF AND INTO OIL: ANALYZING GLOBAL OIL DEPLETION AND TRANSITION THROUGH Government or any agency thereof. #12;#12;ORNL/TM-2003/259 RUNNING OUT OF AND INTO OIL: ANALYZING GLOBAL OIL ...................................................................................................................1 2. WORLD OIL RESOURCE ESTIMATES

  20. Examining the Effects of Variability in Average Link Speeds on Estimated Mobile Source Emissions and Air Quality

    E-Print Network [OSTI]

    Sogutlugil, Mihriban

    2005-01-01T23:59:59.000Z

    running evaporative (or running loss), starts/parks, idle,diurnal, resting loss, running loss, tire- and brake-wearOn-Road Diesel Exhaust Running Losses The SCCs are based on

  1. High Speed Flywheels for Integrated Energy Storage and Attitude Control

    E-Print Network [OSTI]

    Hall, Christopher D.

    High Speed Flywheels for Integrated Energy Storage and Attitude Control Christopher D. Hall. Decomposition of the space of internal torques separates the attitude control functionfrom the energy storage simultaneously performing energy storage and extraction operations. 1 Introduction The power engineering

  2. Microsoft Word - idaho_wind_speed_summary.doc

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

    Ft. Hall, ID Sites Wheat Grass Ridge Average Wind Speeds Site 0001 (66 ft. (20m) tower, erected week of 11101, data started on 11201) N. 42 deg. 44.762', W. 112 deg. 41.011'...

  3. High speed imaging of transient non-Newtonian fluid phenomena

    E-Print Network [OSTI]

    Gallup, Benjamin H. (Benjamin Hodsdon), 1982-

    2004-01-01T23:59:59.000Z

    In this thesis, I investigate the utility of high speed imaging for gaining scientific insight into the nature of short-duration transient fluid phenomena, specifically applied to the Kaye effect. The Kaye effect, noted ...

  4. Effects of various inefficiencies in rowing on shell speed

    E-Print Network [OSTI]

    Young, Stephen F., Jr

    2009-01-01T23:59:59.000Z

    First order predictions were made in determining the effects of various sources of inefficiency in rowing on shell speed. These predictions were then tested using a MATLAB model of the rowing stroke. The model simulates ...

  5. automated speed enforcement: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  6. adjustable speed drives: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  7. adjustable speed drive: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  8. High-Speed Network Enables Industrial Internet | GE Global Research

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

    share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) GE Unveils High-Speed Network Infrastructure to Connect Machines, Data and People at Light...

  9. A high-speed hysteresis motor spindle for machining applications

    E-Print Network [OSTI]

    Bayless, Jacob D. (Jacob Daniel)

    2014-01-01T23:59:59.000Z

    An analysis of suitable drive technologies for use in a new high-speed machining spindle was performed to determine critical research areas. The focus is on a hysteresis motor topology using a solid, inherently-balanced ...

  10. Rotary-linear axes for high speed machining

    E-Print Network [OSTI]

    Liebman, Michael Kevin, 1974-

    2001-01-01T23:59:59.000Z

    This thesis presents the design, analysis, fabrication, and control of a rotary-linear axis; this axis is a key subsystem for high speed, 5-axis machine tools intended for fabricating centimeter-scale parts. The rotary-linear ...

  11. Microsoft Word - utah_wind_speed_summary.doc

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

    02 - 110502) 10.6 mph Overall Average (120101 - 110502) 7.8 mph Dean Davis Site Spanish Fork, Utah Average Wind Speeds Site 0009 (66 ft. (20m) tower, data started on 1101...

  12. air speed indicators: Topics by E-print Network

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

    A; Rozelot, J P; 10.10880004-637X727144 2011-01-01 6 High speed air pneumatic wind shield wiping design MIT - DSpace Summary: In this creative design process a number of...

  13. High speed air pneumatic wind shield wiping design

    E-Print Network [OSTI]

    Heyward, Moses A

    2005-01-01T23:59:59.000Z

    In this creative design process a number of designs were constructed, implemented and tested in order to assess the feasibility of using high speed to create a curtain to repel the rain from the automobile windshield instead ...

  14. On advancement of high speed atomic force microscope technology

    E-Print Network [OSTI]

    SooHoo, Kimberly E

    2008-01-01T23:59:59.000Z

    High speed atomic force microscopy (AFM) is a developing process in which nanoscale objects, such as crystal structures or strands of DNA, can be imaged at rates fast enough to watch processes as they occur. Although current ...

  15. High-Speed Parameter Estimation Algorithms For Nonlinear Smart Materials

    E-Print Network [OSTI]

    for ferroelectric, ferromagnetic, and ferroelastic materials is the estimation or identification of material alters the position of the cutting head. The nonlinear material behavior creates difficulty whenHigh-Speed Parameter Estimation Algorithms For Nonlinear Smart Materials Jon M. Ernstberger

  16. Time-dependent Hamiltonians with 100% evolution speed efficiency

    E-Print Network [OSTI]

    Raam Uzdin; Uwe Guenther; Saar Rahav; Nimrod Moiseyev

    2012-07-23T23:59:59.000Z

    The evolution speed in projective Hilbert space is considered for Hermitian Hamiltonians and for non-Hermitian (NH) ones. Based on the Hilbert-Schmidt norm and the spectral norm of a Hamiltonian, resource-related upper bounds on the evolution speed are constructed. These bounds are valid also for NH Hamiltonians and they are illustrated for an optical NH Hamiltonian and for a non-Hermitian $\\mathcal{PT}-$symmetric matrix Hamiltonian. Furthermore, the concept of quantum speed efficiency is introduced as measure of the system resources directly spent on the motion in the projective Hilbert space. A recipe for the construction of time-dependent Hamiltonians which ensure 100% speed efficiency is given. Generally these efficient Hamiltonians are NH but there is a Hermitian efficient Hamiltonian as well. Finally, the extremal case of a non-Hermitian non-diagonalizable Hamiltonian with vanishing energy difference is shown to produce a 100% efficient evolution with minimal resources consumption.

  17. A Study of Adjustable Speed Drive Applications for Pumps

    E-Print Network [OSTI]

    Triezenberg, D. M.; Lakhavani, S. T.

    1983-01-01T23:59:59.000Z

    A STUDY OF ADJUSTABLE SPEED DRIVE APPLICATIONS FOR PUMPS D. M. Triezenberg and S. T. Lakhavani Westinghouse R&D Center Pittsburgh, Pennsylvania ABSTRACT We have undertaken a survey and analysis of potential ASD applications for pumps in U...

  18. Hydrodynamic evaluation of high-speed semi-SWATH vessels

    E-Print Network [OSTI]

    Guttenplan, Adam (Adam David)

    2007-01-01T23:59:59.000Z

    High-speed semi-displacement vessels have enjoyed rapid development and widespread use over the past 25 years. Concurrent with their growth as viable commercial and naval platforms, has been the advancement of three-dimensional ...

  19. A Unified View on Speeded Categorization Hongbin Gu 1

    E-Print Network [OSTI]

    Ji, Chuanshu

    A Unified View on Speeded Categorization Hongbin Gu 1 Chuanshu Ji 2 1 Introduction The research of Psychiatry, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA; hongbin

  20. Integrated starting and running amalgam assembly for an electrodeless fluorescent lamp

    DOE Patents [OSTI]

    Borowiec, Joseph Christopher (Schenectady, NY); Cocoma, John Paul (Clifton Park, NY); Roberts, Victor David (Burnt Hills, NY)

    1998-01-01T23:59:59.000Z

    An integrated starting and running amalgam assembly for an electrodeless SEF fluorescent lamp includes a wire mesh amalgam support constructed to jointly optimize positions of a starting amalgam and a running amalgam in the lamp, thereby optimizing mercury vapor pressure in the lamp during both starting and steady-state operation in order to rapidly achieve and maintain high light output. The wire mesh amalgam support is constructed to support the starting amalgam toward one end thereof and the running amalgam toward the other end thereof, and the wire mesh is rolled for friction-fitting within the exhaust tube of the lamp. The positions of the starting and running amalgams on the wire mesh are jointly optimized such that high light output is achieved quickly and maintained, while avoiding any significant reduction in light output between starting and running operation.