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Sample records for normal fault ball

  1. Dating of major normal fault systems using thermochronology-...

    Open Energy Info (EERE)

    faults, timing of ductile mylonite formation and passage of rocks through the crystal-plastic to brittle transition, and multiple events of extensional unroofing. Here we...

  2. Influence of Transcontinental arch on Cretaceous listric-normal faulting, west flank, Denver basin

    SciTech Connect (OSTI)

    Davis, T.L.

    1983-08-01

    Seismic studies along the west flank of the Denver basin near Boulder and Greeley, Colorado illustrate the interrelationship between shallow listric-normal faulting in the Cretaceous and deeper basement-controlled faulting. Deeper fault systems, primarily associated with the Transcontinental arch, control the styles and causative mechanisms of listric-normal faulting that developed in the Cretaceous. Three major stratigraphic levels of listric-normal faulting occur in the Boulder-Greeley area. These tectonic sensitive intervals are present in the following Cretaceous formations: Laramie-Fox Hills-upper Pierre, middle Pierre Hygiene zone, and the Niobrara-Carlile-Greenhorn. Documentation of the listric-normal fault style reveals a Wattenberg high, a horst block or positive feature of the greater Transcontinental arch, was active in the east Boulder-Greeley area during Cretaceous time. Paleotectonic events associated with the Wattenberg high are traced through analysis of the listric-normal fault systems that occur in the area. These styles are important to recognize because of their stratigraphic and structural influence on Cretaceous petroleum reservoir systems in the Denver basin. Similar styles of listric-normal faulting occur in the Cretaceous in many Rocky Mountain foreland basins.

  3. Effects of burial history, rock ductility and recovery magnitude on inversion of normal faulted strata 

    E-Print Network [OSTI]

    Kuhle, Nathan John

    2001-01-01

    , and distributed fracturing and folding. The relative contribution of these mechanisms depends on the relative ductility of the rock and magnitude of inversion. Reverse slip on the normal fault and distributed fracturing occur during early stages of inversion...

  4. GRC Transactions, Vol. 32, 2008 Blue Mountain, Nevada, structural control, normal fault,

    E-Print Network [OSTI]

    Faulds, James E.

    GRC Transactions, Vol. 32, 2008 273 Keywords Blue Mountain, Nevada, structural control, normal fault, oblique slip, dilatant zone, Great Basin AbstrAct The Blue Mountain geothermal field is a blind geothermal prospect (i.e., no surface hot springs) along the west flank of Blue Mountain in southern Humboldt

  5. The propagation and linkage of normal faults: Insights from the Strathspey-Brent-Statfjord fault array, northern North Sea

    E-Print Network [OSTI]

    McLeod, Aileen E.

    2001-01-01

    Through examination of the scaling relations of faults and the use of seismic stratigraphic techniques,

  6. GEOPHYSICS, VOL. 63, NO. 1 (JANUARY-FEBRUARY 1998); P. 223230, 7 FIGS. Seismic depth imaging of normal faulting

    E-Print Network [OSTI]

    of normal faulting in southern Death Valley by seismic depth imag- ing. We analyze COCORP Death Valley LineConsortiumforContinentalReflection Profiling (COCORP) in this region may have imaged, perhaps for the first time, crustal-scale plumbing

  7. Uranium groundwater anomalies and active normal faulting W. Plastino G. F. Panza C. Doglioni M. L. Frezzotti A. Peccerillo

    E-Print Network [OSTI]

    Uranium groundwater anomalies and active normal faulting W. Plastino · G. F. Panza · C. Doglioni to crustal defor- mation. It is shown in this paper that uranium groundwater anomalies, which were observed of the area, these measurements indicate that uranium may be used as a possible strain meter in extensional

  8. Glass balls

    E-Print Network [OSTI]

    There is a building with 100 floors in it, and glass balls, and an integer k with the following property. If one drops a glass ball from the floor number k or higher, ...

  9. Ball Moss 

    E-Print Network [OSTI]

    Crow, William T.

    2000-04-18

    Ball moss is a bromeliad that grows on trees. It is not a parasite and does not take nutrients from trees. It can be controlled, if desired, by mechanical removal or by applying fungicides that contain copper.

  10. Growth of normal faults in multilayer sequences: A 3D seismic case study from the Egersund Basin, Norwegian North Sea

    E-Print Network [OSTI]

    Fossen, Haakon

    Accepted 7 August 2013 Available online 14 August 2013 Keywords: Salt tectonics Fault reactivation Throw the structural style and evolution of a salt-influenced, extensional fault array in the Egersund Basin (Norwegian and growth, suggesting an evolution of (1) initial syn-sedimentary fault growth contemporaneous with salt

  11. The Dependence of Bat Performance on Ball Properties Lloyd Smith and Joseph Duris

    E-Print Network [OSTI]

    Smith, Lloyd V.

    The Dependence of Bat Performance on Ball Properties Lloyd Smith and Joseph Duris School Coefficient of restitution vr Rebound ball speed m Ball mass Abstract The performance of baseball and softball considers the rate dependence of ball compression and the normalization of bat performance with ball weight

  12. The geometric and statistical evolution of normal fault systems: an experimental study of the effects of mechanical

    E-Print Network [OSTI]

    . Withjacka,c a Formerly at: Mobil Technology Company, P.O. Box 650232, Dallas, TX 75265-0232, USA b ExxonMobil present our data as evidence of the existence of upper and lower bounds for the scale invariant behavior fractal-based methods for estimating the number of faults not imaged by seismic data. More recently

  13. Ball valve extractor

    DOE Patents [OSTI]

    Herndon, Charles (Walterboro, SC); Brown, Roger A. (North Augusta, SC)

    2002-01-01

    An apparatus and process for removing a ball valve is provided. The ball valve removal tool provides a handle sliding along the length of a shaft. One end of the shaft is secured within an interior cavity of a ball valve while the opposite end of the shaft defines a stop member. By providing a manual sliding force to the handle, the handle impacts the stop member and transmits the force to the ball valve. The direction of the force is along the shaft of the removal tool and disengages the ball valve from the ball valve housing.

  14. Theory of ball lightning

    E-Print Network [OSTI]

    Wu, H -C

    2014-01-01

    We present a comprehensive explanation on ball lightning, a luminous sphere occasionally witnessed after ordinary lightning. In the last decade, it has been well established that natural lightning routinely generates relativistic electrons, which account for observed x rays. So we assume that, in a ball lightning event, a well-defined relativistic electron bunch is produced by the stepped leader of lightning. When this electron bunch strikes various media, a powerful microwave pulse is emitted by the coherent transition radiation mechanism. This intense microwave ionizes air, evacuates plasmas by its radiation pressure to form a globular plasma cavity, and then gets trapped inside the cavity. This theory successfully explains all characteristics of ball lightning, especially the appearance of ball lightning in fully-screened aircraft. Moreover, the proposed radiation mechanism fully explains the strongest radio signals from lightning and nanosecond spikes in the signals are direct evidences on the generation ...

  15. Tunguska Dark Matter Ball

    E-Print Network [OSTI]

    C. D. Froggatt; H. B. Nielsen

    2015-05-10

    It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we earlier proposed. The expected rate of impact of this kind of dark matter ball with the earth seems to crudely match a time scale of 200 years between the impacts. The main explosion of the Tunguska event is explained in our picture as material coming out from deep within the earth, where it has been heated and compressed by the ball penetrating to a depth of several thousand km. Thus the effect has some similarity with volcanic activity as suggested by Kundt. We discuss the possible identification of kimberlite pipes with earlier Tunguska-like events. A discussion of how the dark matter balls may have formed in the early universe is also given.

  16. Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault damage zones

    E-Print Network [OSTI]

    Savage, Heather M.; Brodsky, Emily E.

    2011-01-01

    E. McCallum (1999), Reservoir damage around faults: OutcropSkar (2005), Controls on damage zone asymmetry of a normal2007), The evolution of the damage zone with fault growth in

  17. Fault finder

    DOE Patents [OSTI]

    Bunch, Richard H. (1614 NW. 106th St., Vancouver, WA 98665)

    1986-01-01

    A fault finder for locating faults along a high voltage electrical transmission line. Real time monitoring of background noise and improved filtering of input signals is used to identify the occurrence of a fault. A fault is detected at both a master and remote unit spaced along the line. A master clock synchronizes operation of a similar clock at the remote unit. Both units include modulator and demodulator circuits for transmission of clock signals and data. All data is received at the master unit for processing to determine an accurate fault distance calculation.

  18. Eddy Current Model of Ball Lightning

    E-Print Network [OSTI]

    Shelton, J D

    2011-01-01

    Eddy Current Model of Ball Lightning Calculations show that high-energy ball lightning may consist of a ball of plasma containing a large circular electric current arising as an eddy current generated by lightning. Synthetic ball lightning might serve as a method of plasma confinement for purposes of nuclear fusion. In this paper, three articles concerning ball lightning and the related phenomenon of large ball lightning are combined to provide insight into this rarely glimpsed occurrence.

  19. Eddy Current Model of Ball Lightning

    E-Print Network [OSTI]

    J. D. Shelton

    2011-02-07

    Eddy Current Model of Ball Lightning Calculations show that high-energy ball lightning may consist of a ball of plasma containing a large circular electric current arising as an eddy current generated by lightning. Synthetic ball lightning might serve as a method of plasma confinement for purposes of nuclear fusion. In this paper, three articles concerning ball lightning and the related phenomenon of large ball lightning are combined to provide insight into this rarely glimpsed occurrence.

  20. Whitey SCHe Ball Valves Provide Test Port Isolation

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-10-19

    These valves are 1/4-inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They are used as normally closed isolation valves for test ports in the SCHe System between the gage root valve and the pressure indicator.

  1. Whitey SCHe Ball Valves Provide Test Port Isolation

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-09-15

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They are used as normally closed isolation valves for test ports in the SCHe System between the gage root valve and the pressure indicator.

  2. Supersymmetry Breaking and Fermi Balls

    E-Print Network [OSTI]

    J. R. Morris; D. Bazeia

    1996-07-22

    A simple model is presented where the disappearance of domain walls and the associated production of ``Fermi balls'', which have been proposed as candidates for cold dark matter, are features which arise rather naturally in response to softly broken supersymmetry.

  3. FIRST EXPERIMENTS WITH THE PLASTIC BALL

    E-Print Network [OSTI]

    Gutbrod, H.H.

    2010-01-01

    FIRST EXPERIMENTS WITH THE PLASTIC BALL H.H. Gutbrod, A.scheme for one module Plastic Soil Response (based on protonS Ropidity ——» Fig. 3. Plastic Ball acceptance in the plane

  4. A model of the ball lightning

    E-Print Network [OSTI]

    Ignatovich, V K

    1992-01-01

    The ball lightning is supposed to be a shock wave of a point explosion frozen with electrostriction forces of the internal strong laser discharge. The life time of the ball with modest parameters is calculated.

  5. A model of the ball lightning

    E-Print Network [OSTI]

    Vladimir K. Ignatovich

    2011-09-05

    The ball lightning is supposed to be a shock wave of a point explosion frozen with electrostriction forces of the internal strong laser discharge. The life time of the ball with modest parameters is calculated.

  6. STRESS AND FAULTING IN THE COSO GEOTHERMAL FIELD: UPDATE AND...

    Open Energy Info (EERE)

    108 24 in a transitional strike-slip to normal faulting stress regime. These structures bound regions of intense micro-seismicity and are complexly associated with surface...

  7. Recency of Faulting and Neotectonic Framework in the Dixie Valley...

    Open Energy Info (EERE)

    by active geothermal springs. More specifically, our investigation shows that induced stress concentrations at the endpoints of normal fault ruptures appear to promote favorable...

  8. Recency Of Faulting And Neotechtonic Framework In The Dixie Valley...

    Open Energy Info (EERE)

    by active geothermal springs. More specifically, our investigation shows that induced stress concentrations at the endpoints of normal fault ruptures appear to promote favorable...

  9. Major Normal Fault | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK5Transport Projects | Open

  10. Ball Packings with Periodic Constraints

    E-Print Network [OSTI]

    Robert Connelly; Jeffrey D. Shen; Alexander D. Smith

    2013-01-04

    We call a periodic ball packing in d-dimensional Euclidean space periodically (strictly) jammed with respect to a period lattice if there are no nontrivial motions of the balls that preserve the period (that maintain some period with smaller or equal volume). In particular, we call a packing consistently periodically (strictly) jammed if it is periodically (strictly) jammed on every one of its periods. After extending a well-known bar framework and stress condition to strict jamming, we prove that a packing with period Lambda is consistently strictly jammed if and only if it is strictly jammed with respect to Lambda and consistently periodically jammed. We next extend a result about rigid unit mode spectra in crystallography to characterize periodic jamming on sublattices. After that, we prove that there are finitely many strictly jammed packings of m unit balls and other similar results. An interesting example shows that the size of the first sublattice on which a packing is first periodically unjammed is not bounded. Finally, we find an example of a consistently periodically jammed packing of low density \\delta = \\frac{4 \\pi}{6 \\sqrt{3} + 11} + \\epsilon ~ 0.59, where \\epsilon is an arbitrarily small positive number. Throughout the paper, the statements for the closely related notions of periodic infinitesimal rigidity and affine infinitesimal rigidity for tensegrity frameworks are also given.

  11. Ball feeder for replenishing evaporator feed

    DOE Patents [OSTI]

    Felde, David K. (Oak Ridge, TN); McKoon, Robert H. (San Ramon, CA)

    1993-01-01

    Vapor source material such as uranium, which is to be dropped into a melt in an evaporator, is made into many balls of identical diameters and placed inside a container. An elongated sloping pipe is connected to the container and leads to the evaporator such that these balls can travel sequentially therealong by gravity. A metering valve in this pipe for passing these balls one at a time is opened in response to a signal when it is ascertained by a detector that there is a ball ready to be passed. A gate in the pipe near the evaporator momentarily stops the motion of the traveling ball and is then opened to allow the ball drop into the melt at a reduced speed.

  12. Ball feeder for replenishing evaporator feed

    DOE Patents [OSTI]

    Felde, D.K.; McKoon, R.H.

    1993-03-23

    Vapor source material such as uranium, which is to be dropped into a melt in an evaporator, is made into many balls of identical diameters and placed inside a container. An elongated sloping pipe is connected to the container and leads to the evaporator such that these balls can travel sequentially therealong by gravity. A metering valve in this pipe for passing these balls one at a time is opened in response to a signal when it is ascertained by a detector that there is a ball ready to be passed. A gate in the pipe near the evaporator momentarily stops the motion of the traveling ball and is then opened to allow the ball drop into the melt at a reduced speed.

  13. Telescoping magnetic ball bar test gage

    DOE Patents [OSTI]

    Bryan, J.B.

    1982-03-15

    A telescoping magnetic ball bar test gage for determining the accuracy of machine tools, including robots, and those measuring machines having non-disengagable servo drives which cannot be clutched out. Two gage balls are held and separated from one another by a telescoping fixture which allows them relative radial motional freedom but not relative lateral motional freedom. The telescoping fixture comprises a parallel reed flexure unit and a rigid member. One gage ball is secured by a magnetic socket knuckle assembly which fixes its center with respect to the machine being tested. The other gage ball is secured by another magnetic socket knuckle assembly which is engaged or held by the machine in such manner that the center of that ball is directed to execute a prescribed trajectory, all points of which are equidistant from the center of the fixed gage ball. As the moving ball executes its trajectory, changes in the radial distance between the centers of the two balls caused by inaccuracies in the machine are determined or measured by a linear variable differential transformer (LVDT) assembly actuated by the parallel reed flexure unit. Measurements can be quickly and easily taken for multiple trajectories about several different fixed ball locations, thereby determining the accuracy of the machine.

  14. CHARGED PARTICLE IDENTIFICATION WITH MODULES OF THE PLASTIC BALL

    E-Print Network [OSTI]

    Gutbrod, H.H.

    2010-01-01

    WITH MODULES OF THE PLASTIC BALL H.H. Gutbrod, M.R. Maier,WITH MODULES OF THE PLASTIC BALL H.H. Gutbrod, M.R. Maier*,of modules of the Plastic Ball detector for positive pions

  15. Are perytons signatures of ball lighting?

    E-Print Network [OSTI]

    Dodin, I Y

    2014-01-01

    The enigmatic downchirped signals, called "perytons", that are detected by radio telescopes in the GHz frequency range may be produced by an atmospheric phenomenon known as ball lightning. Although this is still a hypothesis, the parallels between perytons and ball lightning are striking.

  16. Lightning Ball (Ball Lightning) Created by Thunder, Shock-Wave

    E-Print Network [OSTI]

    Domokos Tar

    2010-07-20

    Following his observation the author has described in the papers [1] to [4] the formation of a Lightning Ball (LB)with the help of a new theory of symmetry breaking of the vortex ring. In the frame of this theory he emphasizes the primordial rule of the thunder (shock-wave) during the lightning strike in the creation of the LB. The shock-waves and the sound waves propagate very fast but the subsequent enlargement of the vortex ring (air masses) is very slow. This is the reason why the rotating air ring (cylinder) only appeared some seconds later in the observation because of the great inertia of the system. As a consequence of the stationary Mach shock-waves reflections theory the stable distance of the LB to the ground and its very stable horizontal path, in spite of strong winds and rain can be explained.

  17. Lightning Ball (Ball Lightning) Created by Thunder, Shock-Wave

    E-Print Network [OSTI]

    Tar, Domokos

    2010-01-01

    Following his observation the author has described in the papers [1] to [4] the formation of a Lightning Ball (LB)with the help of a new theory of symmetry breaking of the vortex ring. In the frame of this theory he emphasizes the primordial rule of the thunder (shock-wave) during the lightning strike in the creation of the LB. The shock-waves and the sound waves propagate very fast but the subsequent enlargement of the vortex ring (air masses) is very slow. This is the reason why the rotating air ring (cylinder) only appeared some seconds later in the observation because of the great inertia of the system. As a consequence of the stationary Mach shock-waves reflections theory the stable distance of the LB to the ground and its very stable horizontal path, in spite of strong winds and rain can be explained.

  18. A methodology for experimentally verifying simulation models for distribution transformer internal faults 

    E-Print Network [OSTI]

    Palmer-Buckle, Peter

    1999-01-01

    Internal winding faults comprise 70-80% of modem transformer breakdown. In this era of deregulation, this phenomenon is likely to increase since loading transformers to their optimum capacity is becoming normal practice. These internal faults result...

  19. RECONSTRUCTION OF THE ORIENTATION DISTRIBUTION FUNCTION IN SINGLE AND MULTIPLE SHELL Q-BALL IMAGING WITHIN

    E-Print Network [OSTI]

    direction) from q-ball data uses linear radial projection, neglecting the change in the volume element along in a dimensionless and normalized ODF expression. Our model is flexible enough so ODFs can either be estimated from (DWMRI) provides valuable information about the fiber architecture of neural tissue by measuring

  20. Fossil fungi from America Pennsylvanian coal balls

    E-Print Network [OSTI]

    Baxter, R. W.

    1975-05-29

    THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS May 29, 1975 Paper 77 FOSSIL FUNGI FROM AMERICAN PENNSYLVANIAN COAL BALLS' ROBERT W. BAXTER University of Kansas, Lawrence, Kansas ABSTRACT The current status of knowledge regarding fossil... fungi from American Pennsylvanian coal balls is discussed under the following general headings: 1) Phycomycetes, 2) Asco- mycetes, 3) Basidiomycetes, 4) fungal sclerotia, 5) mycorrhizal fungi, and 6) "fleshy fungi." Protoascon missouriensis...

  1. Recurrent faulting and petroleum accumulation, Cat Creek Anticline, central Montana

    SciTech Connect (OSTI)

    Nelson, W.J. (Illinois State Geological Survey, Champaign (United States))

    1991-06-01

    The Cat Creek anticline, scene of central Montana's first significant oil discovery, is underlain by a south-dipping high-angle fault (Cat Creek fault) that has undergone several episodes of movement with opposite sense of displacement. Borehole data suggest that the Cat Creek fault originated as a normal fault during Proterozoic rifting concurrent with deposition of the Belt Supergroup. Reverse faulting took place in Late Cambrian time, and again near the end of the Devonian Period. The Devonian episode, coeval with the Antler orogeny, raised the southern block several hundred feet. The southern block remained high through Meramecian time, then began to subside. Post-Atokan, pre-Middle Jurassic normal faulting lowered the southern block as much as 1,500 ft. During the Laramide orogeny (latest Cretaceous-Eocene) the Cat Creek fault underwent as much as 4,000 ft of reverse displacement and a comparable amount of left-lateral displacement. The Cat Creek anticline is a fault-propagation fold; en echelon domes and listric normal faults developed along its crest in response to wrenching. Oil was generated mainly in organic-rich shales of the Heath Formation (upper Chesterian Series) and migrated upward along tectonic fractures into Pennsylvanian, Jurassic, and Cretaceous reservoir rocks in structural traps in en echelon domes. Production has been achieved only from those domes where structural closure was retained from Jurassic through Holocene time.

  2. Optimal fault location 

    E-Print Network [OSTI]

    Knezev, Maja

    2008-10-10

    sequence of events newly obtained recording belongs. Software prototype of the proposed automated fault location analysis is developed using Java programming language. Fault location analysis is automatically triggered by appearance of new event files in a...

  3. Dark Matter Balls Help Supernovae to Explode

    E-Print Network [OSTI]

    Colin D. Froggatt; Holger B. Nielsen

    2015-03-03

    As a solution to the well-known problem that the shock wave potentially responsible for the explosion of a supernova actually tends to stall, we propose a new energy source arising from our model for dark matter. Our earlier model proposed that dark matter should consist of cm-large white dwarf-like objects kept together by a skin separating two different sorts of vacua. These dark matter balls or pearls will collect in the middle of any star throughout its lifetime. At some stage during the development of a supernova the balls will begin to take in neutrons and then other surrounding material. By passing into a ball nucleons fall through a potential of order 10 MeV, causing a severe production of heat - of order 10 foe for a solar mass of material eaten by the balls. The temperature in the iron core will thereby be raised, splitting up the iron into smaller nuclei. This provides a mechanism for reviving the shock wave when it arrives and making the supernova explosion really occur. The onset of the heating due to the dark matter balls would at first stop the collapse of the supernova progenitor. This opens up the possibility of there being {\\em two} collapses giving two neutrino outbursts, as apparently seen in the supernova SN1987A - one in Mont Blanc, and one 4 hours 43 minutes later in both IMB and Kamiokande.

  4. Silicon ball grid array chip carrier

    DOE Patents [OSTI]

    Palmer, David W. (Albuquerque, NM); Gassman, Richard A. (Greensboro, NC); Chu, Dahwey (Albuquerque, NM)

    2000-01-01

    A ball-grid-array integrated circuit (IC) chip carrier formed from a silicon substrate is disclosed. The silicon ball-grid-array chip carrier is of particular use with ICs having peripheral bond pads which can be reconfigured to a ball-grid-array. The use of a semiconductor substrate such as silicon for forming the ball-grid-array chip carrier allows the chip carrier to be fabricated on an IC process line with, at least in part, standard IC processes. Additionally, the silicon chip carrier can include components such as transistors, resistors, capacitors, inductors and sensors to form a "smart" chip carrier which can provide added functionality and testability to one or more ICs mounted on the chip carrier. Types of functionality that can be provided on the "smart" chip carrier include boundary-scan cells, built-in test structures, signal conditioning circuitry, power conditioning circuitry, and a reconfiguration capability. The "smart" chip carrier can also be used to form specialized or application-specific ICs (ASICs) from conventional ICs. Types of sensors that can be included on the silicon ball-grid-array chip carrier include temperature sensors, pressure sensors, stress sensors, inertia or acceleration sensors, and/or chemical sensors. These sensors can be fabricated by IC processes and can include microelectromechanical (MEM) devices.

  5. Normal Distribution

    E-Print Network [OSTI]

    User

    NORMAL DlSTRlBUTION TABLE. Entries represent the area under the standardized normal distribution from -w to z, Pr(Z

  6. Fault Mechanics Earth Structure (2nd Edition), 2004

    E-Print Network [OSTI]

    , and normal faulting is ratio of pore-fluid pressure and lithostatic pressure ( ranges from 0.4 for hydrostatic fluid pressure to 1 for lithostatic fluid pressure) © EarthStructure (2nd ed) 610/25/2010 #12

  7. Understanding Fault Characteristics And Sediment Depth For Geothermal...

    Open Energy Info (EERE)

    of primarily E-W directed extension along N-NNW striking normal faults. Water well drilling on the eastern slopes of the Wassuk Range, west of the city of Hawthorne, Nevada...

  8. A conceptual model for the origin of fault damage zone structures in high-porosity sandstone

    E-Print Network [OSTI]

    Cowie, Patience

    A conceptual model for the origin of fault damage zone structures in high-porosity sandstone Zoe K-porosity sandstones. Damage zone deformation has been particularly well constrained for two 4-km-long normal faults formed in the Navajo Sandstone of central Utah, USA. For these faults the width of the damage zone

  9. Ball State building massive geothermal system

    Broader source: Energy.gov [DOE]

    Ball State University is building America’s largest ground source district geothermal heating and cooling system. The new operation will save the school millions of dollars, slash greenhouse gases and create jobs. The project will also “expand how America will define the use of geothermal technology on a district-wide scale,” and provide health benefits such as reducing asthma rates for Indiana residents, says Philip Sachtleben, Ball State’s associate vice president of governmental relations. The system will cool and heat nearly 50 buildings on Ball State’s Muncie, Ind., campus, replace four coal-burning boilers and span more than 600 acres. The switch to geothermal will save the university $2.2 million in fuel costs and cut its carbon footprint in half.

  10. Phenotypic characterization of rhizobia that nodulate ball clover 

    E-Print Network [OSTI]

    Cepeda Hernandez, Martha Lucia

    2005-11-01

    A total of 43 Rhizobium leguminosarium bv. trifolii isolates were obtained from soil samples of two ball clover (Trifolium nigrescens) pastures from Iola and Kilgore (Texas) using ball clover as capture plants. The isolates were phenotypically...

  11. Energy conditions outside a dielectric ball

    SciTech Connect (OSTI)

    Graham, Noah; Olum, Ken D.; Schwartz-Perlov, Delia [Department of Physics, Middlebury College, Middlebury, Vermont 05753 (United States); Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

    2004-11-15

    We show analytically that the vacuum electromagnetic stress-energy tensor outside a ball with constant dielectric constant and permeability always obeys the weak, null, dominant, and strong energy conditions. There are still no known examples in quantum field theory in which the averaged null energy condition in flat spacetime is violated.

  12. The harmonic measure of balls in random trees Nicolas Curien

    E-Print Network [OSTI]

    Le Gall, Jean-François

    The harmonic measure of balls in random trees Nicolas Curien and Jean-François Le Gall Abstract We study properties of the harmonic measure of balls in typical large discrete trees. For a ball of radius of the harmonic measure is supported on a boundary set of size approximately equal to n , where 0

  13. Andrew Moore Department of Physics, Ball State University

    E-Print Network [OSTI]

    Sites, James R.

    University #12;Organizations: American Physical Society (APS) Programming Languages/ Software: Java, CAndrew Moore Department of Physics, Ball State University 7755 Meadow Lane, Newburgh, IN 47630 812 2007-2011 M.S. of Physics, Ball State University B.S. of Physics, Ball State University Quantum

  14. SCHWARTZ TENNIS CENTER DAMPENERS, GRIPS, STRING, TENNIS BALLS

    E-Print Network [OSTI]

    Pittendrigh, Barry

    SCHWARTZ TENNIS CENTER DAMPENERS, GRIPS, STRING, TENNIS BALLS STRINGING:(We attempt to have all, Durability $34.00 Luxilon Big Banger Rough, Spin, Control, Durability $34.00 Prince Lightning, 16 g: $5.00 Wilson Pro Feel Plus Dampener: $4.00 TENNIS BALLS: Wilson US Open Tennis Balls: $3.25 SPECIAL

  15. Fault simulation and test generation for small delay faults 

    E-Print Network [OSTI]

    Qiu, Wangqi

    2007-04-25

    Delay faults are an increasingly important test challenge. Traditional delay fault models are incomplete in that they model only a subset of delay defect behaviors. To solve this problem, a more realistic delay fault model has been developed which...

  16. Air fluidized balls in a background of smaller beads

    E-Print Network [OSTI]

    M. E. Beverland; L. J. Daniels; D. J. Durian

    2010-12-02

    We report on quasi-two-dimensional granular systems in which either one or two large balls is fluidized by an upflow of air in the presence of a background of several hundred smaller beads. A single large ball is observed to propel ballistically in nearly circular orbits, in direct contrast to the Brownian behavior of a large ball fluidized in the absence of this background. Further, the large ball motion satisfies a Langevin equation with an additional speed-dependent force acting in the direction of motion. This results in a non-zero average speed of the large ball that is an order of magnitude faster than the root mean square speed of the background balls. Two large balls fluidized in the absence of the small-bead background experience a repulsive force depending only on the separation of the two balls. With the background beads present, by contrast, the ball-ball interaction becomes velocity-dependent and attractive. The attraction is long-ranged and inconsistent with a depletion model; instead, it is mediated by local fluctuations in the density of the background beads which depends on the large balls' motion.

  17. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, R.B.; Pruett, J.C. Jr.

    1984-05-14

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  18. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, Robert B. (Wheatridge, CO); Pruett, Jr., James C. (Lakewood, CO)

    1986-01-01

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  19. A new Concept of Ball Lightning

    E-Print Network [OSTI]

    Tsintsadze, Levan N

    2008-01-01

    We suggest that the ball lightning (BL) is a weakly ionized gas, in which the electromagnetic radiation can be accumulated through the Bose-Einstein condensation and/or the photon trapping in the plasma density well. We derive the set of equations describing the stability of BL, and show that the BL moving along charged surface becomes unstable. Eventually the instability leads to explosion of BL and release of energy of the trapped photons and/or the Bose-Einstein condensate.

  20. Transient fault modeling and fault injection simulation 

    E-Print Network [OSTI]

    Yuan, Xuejun

    1996-01-01

    An accurate transient fault model is presented in this thesis. A 7-term exponential current upset model is derived from the results of a device-level, 3-dimensional, single-event-upset simulation. A curve-fitting algorithm is used to extract...

  1. Automatic ball bar for a coordinate measuring machine

    DOE Patents [OSTI]

    Jostlein, Hans (Naperville, IL)

    1997-01-01

    An automatic ball bar for a coordinate measuring machine determines the accuracy of a coordinate measuring machine having at least one servo drive. The apparatus comprises a first and second gauge ball connected by a telescoping rigid member. The rigid member includes a switch such that inward radial movement of the second gauge ball relative to the first gauge ball causes activation of the switch. The first gauge ball is secured in a first magnetic socket assembly in order to maintain the first gauge ball at a fixed location with respect to the coordinate measuring machine. A second magnetic socket assembly secures the second gauge ball to the arm or probe holder of the coordinate measuring machine. The second gauge ball is then directed by the coordinate measuring machine to move radially inward from a point just beyond the length of the ball bar until the switch is activated. Upon switch activation, the position of the coordinate measuring machine is determined and compared to known ball bar length such that the accuracy of the coordinate measuring machine can be determined.

  2. Automatic ball bar for a coordinate measuring machine

    DOE Patents [OSTI]

    Jostlein, H.

    1997-07-15

    An automatic ball bar for a coordinate measuring machine determines the accuracy of a coordinate measuring machine having at least one servo drive. The apparatus comprises a first and second gauge ball connected by a telescoping rigid member. The rigid member includes a switch such that inward radial movement of the second gauge ball relative to the first gauge ball causes activation of the switch. The first gauge ball is secured in a first magnetic socket assembly in order to maintain the first gauge ball at a fixed location with respect to the coordinate measuring machine. A second magnetic socket assembly secures the second gauge ball to the arm or probe holder of the coordinate measuring machine. The second gauge ball is then directed by the coordinate measuring machine to move radially inward from a point just beyond the length of the ball bar until the switch is activated. Upon switch activation, the position of the coordinate measuring machine is determined and compared to known ball bar length such that the accuracy of the coordinate measuring machine can be determined. 5 figs.

  3. Simulation of a flexible wind turbine response to a grid fault Anca D. Hansen*, Nicolaos A. Cutululis*, Poul Srensen*,

    E-Print Network [OSTI]

    Simulation of a flexible wind turbine response to a grid fault Anca D. Hansen*, Nicolaos A of a wind turbine. Grid faults generate transients in the generator electromagnetic torque, which are propagated in the wind turbine, stressing its mechanical components. Grid faults are normally simulated

  4. Ball lightning observation: an objective video-camera analysis report

    E-Print Network [OSTI]

    Sello, Stefano; Paganini, Enrico

    2011-01-01

    In this paper we describe a video-camera recording of a (probable) ball lightning event and both the related image and signal analyses for its photometric and dynamical characterization. The results strongly support the BL nature of the recorded luminous ball object and allow the researchers to have an objective and unique video document of a possible BL event for further analyses. Some general evaluations of the obtained results considering the proposed ball lightning models conclude the paper.

  5. Ball lightning observation: an objective video-camera analysis report

    E-Print Network [OSTI]

    Stefano Sello; Paolo Viviani; Enrico Paganini

    2011-02-18

    In this paper we describe a video-camera recording of a (probable) ball lightning event and both the related image and signal analyses for its photometric and dynamical characterization. The results strongly support the BL nature of the recorded luminous ball object and allow the researchers to have an objective and unique video document of a possible BL event for further analyses. Some general evaluations of the obtained results considering the proposed ball lightning models conclude the paper.

  6. RadBall Technology For Hot Cell Characterization

    Broader source: Energy.gov [DOE]

    A new, non-electrical, remote radiation mapping device known as RadBall has been developed by the National Nuclear Laboratory (NNL) in the United Kingdom.

  7. RadBall Technology For Hot Cell Characterization

    Office of Environmental Management (EM)

    accurately characterize different radiation sources is ongoing along with development and building of the 3D visualization part of the technology to overlay RadBall data onto...

  8. Linear Fractional Maps of the Ball and Their Composition Operators

    E-Print Network [OSTI]

    Abstract. In this paper, we describe a class of maps of the unit ball in CN into itself ... ?Supported by National Science Foundation grants DMS-9206965 and ...

  9. Observation of Lightning Ball (Ball Lightning): A new phenomenological description of the phenomenon

    E-Print Network [OSTI]

    Tar, Domokos

    2009-01-01

    The author (physicist)has observed the very strange,beautiful and frightening Lightning Ball (LB). He has never forgotten this phenomenon. During his working life he could not devote himself to the problem of LB-formation.Only two years ago as he has been reading different unbelievable models of LB-formation, he decided to work on this problem. By studying the literature and the crucial points of his observation the author succeeded in creating a completely new model of Lightning Ball(LB) and Ball Lightning(BL)-formation based on the symmetry breaking of the hydrodynamic vortex ring.This agrees fully with the observation and overcomes the shortcomings of current models of LB formation. This model provides answers to the questions: Why are LBs so rarely observed,why do BLs in rare cases have such a high energy and how can we generate LB in the laboratory? Moreover the author differentiates between LB and BL, the latter having a high energy and occuring in 5 % of the observations. Keywords: ball lightning, hydr...

  10. Observation of Lightning Ball (Ball Lightning): A new phenomenological description of the phenomenon

    E-Print Network [OSTI]

    Domokos Tar

    2009-10-05

    The author (physicist)has observed the very strange,beautiful and frightening Lightning Ball (LB). He has never forgotten this phenomenon. During his working life he could not devote himself to the problem of LB-formation.Only two years ago as he has been reading different unbelievable models of LB-formation, he decided to work on this problem. By studying the literature and the crucial points of his observation the author succeeded in creating a completely new model of Lightning Ball(LB) and Ball Lightning(BL)-formation based on the symmetry breaking of the hydrodynamic vortex ring.This agrees fully with the observation and overcomes the shortcomings of current models of LB formation. This model provides answers to the questions: Why are LBs so rarely observed,why do BLs in rare cases have such a high energy and how can we generate LB in the laboratory? Moreover the author differentiates between LB and BL, the latter having a high energy and occuring in 5 % of the observations. Keywords: ball lightning, hydrodynamic vortex ring, symmetry breaking, electroluminescence, triboelectrification.

  11. Fault Locating, Prediction and Protection (FLPPS)

    SciTech Connect (OSTI)

    Yinger, Robert, J.; Venkata, S., S.; Centeno, Virgilio

    2010-09-30

    One of the main objectives of this DOE-sponsored project was to reduce customer outage time. Fault location, prediction, and protection are the most important aspects of fault management for the reduction of outage time. In the past most of the research and development on power system faults in these areas has focused on transmission systems, and it is not until recently with deregulation and competition that research on power system faults has begun to focus on the unique aspects of distribution systems. This project was planned with three Phases, approximately one year per phase. The first phase of the project involved an assessment of the state-of-the-art in fault location, prediction, and detection as well as the design, lab testing, and field installation of the advanced protection system on the SCE Circuit of the Future located north of San Bernardino, CA. The new feeder automation scheme, with vacuum fault interrupters, will limit the number of customers affected by the fault. Depending on the fault location, the substation breaker might not even trip. Through the use of fast communications (fiber) the fault locations can be determined and the proper fault interrupting switches opened automatically. With knowledge of circuit loadings at the time of the fault, ties to other circuits can be closed automatically to restore all customers except the faulted section. This new automation scheme limits outage time and increases reliability for customers. The second phase of the project involved the selection, modeling, testing and installation of a fault current limiter on the Circuit of the Future. While this project did not pay for the installation and testing of the fault current limiter, it did perform the evaluation of the fault current limiter and its impacts on the protection system of the Circuit of the Future. After investigation of several fault current limiters, the Zenergy superconducting, saturable core fault current limiter was selected for installation. Because of some testing problems with the Zenergy fault current limiter, installation was delayed until early 2009 with it being put into operation on March 6, 2009. A malfunction of the FCL controller caused the DC power supply to the superconducting magnet to be turned off. This inserted the FCL impedance into the circuit while it was in normal operation causing a voltage resonance condition. While these voltages never reached a point where damage would occur on customer equipment, steps were taken to insure this would not happen again. The FCL was reenergized with load on December 18, 2009. A fault was experienced on the circuit with the FCL in operation on January 14, 2010. The FCL operated properly and reduced the fault current by about 8%, what was expected from tests and modeling. As of the end of the project, the FCL was still in operation on the circuit. The third phase of the project involved the exploration of several advanced protection ideas that might be at a state where they could be applied to the Circuit of the Future and elsewhere in the SCE electrical system. Based on the work done as part of the literature review and survey, as well as a number of internal meetings with engineering staff at SCE, a number of ideas were compiled. These ideas were then evaluated for applicability and ability to be applied on the Circuit of the Future in the time remaining for the project. Some of these basic ideas were implemented on the circuit including measurement of power quality before and after the FCL. It was also decided that we would take what was learned as part of the Circuit of the Future work and extend it to the next generation circuit protection for SCE. Also at this time, SCE put in a proposal to the DOE for the Irvine Smart Grid Demonstration using ARRA funding. SCE was successful in obtaining funding for this proposal, so it was felt that exploration of new protection schemes for this Irvine Smart Grid Demonstration would be a good use of the project resources. With this in mind, a protection system that uses fault interrupting switches, hi

  12. Fourier-Laguerre transform, Convolution and Wavelets on the Ball

    E-Print Network [OSTI]

    McEwen, Jason

    Fourier-Laguerre transform, Convolution and Wavelets on the Ball Jason D. McEwen and Boris Leistedt.leistedt.11}@ucl.ac.uk Abstract--We review the Fourier-Laguerre transform, an al- ternative harmonic analysis on the three-dimensional ball to the usual Fourier-Bessel transform. The Fourier-Laguerre transform exhibits

  13. Dynamics of a bouncing ball in human performance Dagmar Sternad

    E-Print Network [OSTI]

    Sternad, Dagmar

    of a dynamically stable period-one regime. In a series of experiments, human subjects bounced a ball rhythmically human movement and physical experi- mental systems is that while the variables and parameters of physical experiments are under the experimenter's control, human subjects when bouncing a ball have

  14. Structural Properties of Screened Coulomb Balls M. Bonitz,1

    E-Print Network [OSTI]

    Bonitz, Michael

    Structural Properties of Screened Coulomb Balls M. Bonitz,1 D. Block,2 O. Arp,2 V. Golubnychiy,1 H, computer simulations, and theoretical analysis, the sensitivity of their structural properties to the type. Coulomb balls consist of hundreds of micrometer sized plastic spheres embedded in a gas plasma

  15. Mechatronic design of a ball-on-plate balancing system

    E-Print Network [OSTI]

    Awtar, Shorya

    Mechatronic design of a ball-on-plate balancing system Shorya Awtar, C. Bernard, N. Boklund, A the conception and development of a ball-on-plate balancing system based on mechatronic design principles was designed and built by students as part of the course Mechatronics System Design at Rensselaer. Ó 2002

  16. The detection of high impedance faults using random fault behavior 

    E-Print Network [OSTI]

    Carswell, Patrick Wayne

    1988-01-01

    and cleared by conventional overcurrent devices. Examples of high impedance fault scenarios include broken conductors and grounded conductors as is the case with tree faults. Most high impedance fault situations occur on the power distribution system due... of the most promising proposals are presented and commented upon as to their weaknesses and limitations if implemented on an actual power distribution system. A new algorithm is developed which attempts to detect the presence of a high impedance fault...

  17. Termination of a Major Normal Fault | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al., 2013) | Opensource History ViewInformationsource

  18. Apex or Salient of Normal Fault | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex A S Jump to:Angola onAperion Energy Systems Jump to:Solar

  19. Dating of major normal fault systems using thermochronology- An example

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) WindGrid Project)Area (1982)Databus -from the

  20. Development of Hydrologic Characterization Technology of Fault Zones

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Onishi, Tiemi; Wu, Yu-Shu

    2008-03-31

    Through an extensive literature survey we find that there is very limited amount of work on fault zone hydrology, particularly in the field using borehole testing. The common elements of a fault include a core, and damage zones. The core usually acts as a barrier to the flow across it, whereas the damage zone controls the flow either parallel to the strike or dip of a fault. In most of cases the damage zone isthe one that is controlling the flow in the fault zone and the surroundings. The permeability of damage zone is in the range of two to three orders of magnitude higher than the protolith. The fault core can have permeability up to seven orders of magnitude lower than the damage zone. The fault types (normal, reverse, and strike-slip) by themselves do not appear to be a clear classifier of the hydrology of fault zones. However, there still remains a possibility that other additional geologic attributes and scaling relationships can be used to predict or bracket the range of hydrologic behavior of fault zones. AMT (Audio frequency Magneto Telluric) and seismic reflection techniques are often used to locate faults. Geochemical signatures and temperature distributions are often used to identify flow domains and/or directions. ALSM (Airborne Laser Swath Mapping) or LIDAR (Light Detection and Ranging) method may prove to be a powerful tool for identifying lineaments in place of the traditional photogrammetry. Nonetheless not much work has been done to characterize the hydrologic properties of faults by directly testing them using pump tests. There are some uncertainties involved in analyzing pressure transients of pump tests: both low permeability and high permeability faults exhibit similar pressure responses. A physically based conceptual and numerical model is presented for simulating fluid and heat flow and solute transport through fractured fault zones using a multiple-continuum medium approach. Data from the Horonobe URL site are analyzed to demonstrate the proposed approach and to examine the flow direction and magnitude on both sides of a suspected fault. We describe a strategy for effective characterization of fault zone hydrology. We recommend conducting a long term pump test followed by a long term buildup test. We do not recommend isolating the borehole into too many intervals. We do recommend ensuring durability and redundancy for long term monitoring.

  1. Fault tolerant linear actuator

    DOE Patents [OSTI]

    Tesar, Delbert

    2004-09-14

    In varying embodiments, the fault tolerant linear actuator of the present invention is a new and improved linear actuator with fault tolerance and positional control that may incorporate velocity summing, force summing, or a combination of the two. In one embodiment, the invention offers a velocity summing arrangement with a differential gear between two prime movers driving a cage, which then drives a linear spindle screw transmission. Other embodiments feature two prime movers driving separate linear spindle screw transmissions, one internal and one external, in a totally concentric and compact integrated module.

  2. Computer hardware fault administration

    DOE Patents [OSTI]

    Archer, Charles J. (Rochester, MN); Megerian, Mark G. (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian E. (Rochester, MN)

    2010-09-14

    Computer hardware fault administration carried out in a parallel computer, where the parallel computer includes a plurality of compute nodes. The compute nodes are coupled for data communications by at least two independent data communications networks, where each data communications network includes data communications links connected to the compute nodes. Typical embodiments carry out hardware fault administration by identifying a location of a defective link in the first data communications network of the parallel computer and routing communications data around the defective link through the second data communications network of the parallel computer.

  3. Electromagnetic detection of plate hydration due to bending faults at the Middle America Trench

    E-Print Network [OSTI]

    Constable, Steve

    images show that the extensive network of trench parallel normal faults penetrates the entire oceanic bending faults on the incoming oceanic plate of the Middle America Trench offshore Nicaragua have been observed to penetrate to mantle depths, suggesting a permeable pathway for hydration of the crust

  4. Evolution of vertical faults at an extensional plate boundary, southwest Iceland

    E-Print Network [OSTI]

    Kattenhorn, Simon

    Evolution of vertical faults at an extensional plate boundary, southwest Iceland James V. Grant1 Abstract Vertical faults having both opening and vertical displacements are common in southwest Iceland of both oblique and normal spreading in southwest Iceland. Individual fracture segments are commonly

  5. Resonant frequency method for bearing ball inspection

    DOE Patents [OSTI]

    Khuri-Yakub, B. T. (Palo Alto, CA); Hsieh, Chung-Kao (Stanford, CA)

    1993-01-01

    The present invention provides for an inspection system and method for detecting defects in test objects which includes means for generating expansion inducing energy focused upon the test object at a first location, such expansion being allowed to contract, thereby causing pressure wave within and on the surface of the test object. Such expansion inducing energy may be provided by, for example, a laser beam or ultrasonic energy. At a second location, the amplitudes and phases of the acoustic waves are detected and the resonant frequencies' quality factors are calculated and compared to predetermined quality factor data, such comparison providing information of whether the test object contains a defect. The inspection system and method also includes means for mounting the bearing ball for inspection.

  6. Resonant frequency method for bearing ball inspection

    DOE Patents [OSTI]

    Khuri-Yakub, B.T.; Chungkao Hsieh.

    1993-11-02

    The present invention provides for an inspection system and method for detecting defects in test objects which includes means for generating expansion inducing energy focused upon the test object at a first location, such expansion being allowed to contract, thereby causing pressure wave within and on the surface of the test object. Such expansion inducing energy may be provided by, for example, a laser beam or ultrasonic energy. At a second location, the amplitudes and phases of the acoustic waves are detected and the resonant frequencies' quality factors are calculated and compared to predetermined quality factor data, such comparison providing information of whether the test object contains a defect. The inspection system and method also includes means for mounting the bearing ball for inspection. 5 figures.

  7. Design of a tree root ball transporting device

    E-Print Network [OSTI]

    Grossman, Christopher (Christopher M.)

    2007-01-01

    Tree root balls from nurseries are often too heavy for one or two people to lift and plant, but powerful machinery can be expensive for small landscaping organizations or the weekend home gardener. This thesis intends to ...

  8. Stress and fault rock controls on fault zone hydrology, Coso...

    Open Energy Info (EERE)

    fault zone hydrology, Coso geothermal field, CA Abstract In crystalline rock of the Coso Geothermal Field, CA, fractures are the primary source of permeability. At reservoir...

  9. Fault interaction near Hollister, California

    SciTech Connect (OSTI)

    Mavko, G.M.

    1982-09-10

    A numerical model is used to study fault stress slip near Hollister, California. The geometrically complex system of interacting faults, including the San Andreas, Calaveras, Sargent, and Busch faults, is approximated with a two-dimensional distribution of short planar fault segments in an elastic medium. The steady stress and slip rate are simulated by specifying frictional strength and stepping the remote stress ahead in time. The resulting computed fault stress is roughly proportional to the observed spatial density of small earthquakes, suggesting that the distinction between segments characterized by earthquakes and those with aseismic creep results, in part, from geometry. A nonsteady simulation is made by introducing, in addition, stress drops for individual moderate earthquakes. A close fit of observed creep with calculated slip on the Calaveras and San Andreas faults suggests that many changes in creep rate (averaged over several months) are caused by local moderate earthquakes. In particular, a 3-year creep lag preceding the August 6, 1979, Coyote Lake earthquake on the Calaveras fault seems to have been a direct result of the November 28, 1974, Thanksgiving Day earthquake on the Busch fault. Computed lags in slip rate preceding some other moderate earthquakes in the area are also due to earlier earthquakes. Although the response of the upper 1 km of the fault zone may cause some individual creep events and introduce delays in others, the long-term rate appears to reflect deep slip.

  10. Effective normal stress alteration due to pore pressure changes induced by dynamic slip

    E-Print Network [OSTI]

    Effective normal stress alteration due to pore pressure changes induced by dynamic slip propagation and permeabilities causes a change in pore pressure there. Because slip causes compression on one side of the fault wall and extension on the other, the pore pressure on the fault increases substantially when

  11. Sedimentation Rates Test Models of Oceanic Detachment Faulting

    E-Print Network [OSTI]

    Parnell-Turner, Ross; Cann, Johnson R.; Smith, Deborah K.; Schouten, Hans; Yoerger, Dana; Palmiotto, Camilla; Zheleznov, Alexei; Bai, Hailong

    2014-10-23

    .R., Tolstoy, M., Dziak, R.P., Fox, C.G. & Smith, D.K., 2002. Aftershock 286 sequences in the mid-ocean ridge environment: an analysis using hydroacoustic data. 287 Tectonophysics, 354(1-2), 49–70. 288 Buck, W. R., 1988. Flexural Rotation of Normal Faults... Dick, H.J.B., Smith, D.K., Cann, J.R., Schouten, H., Marschall, H., Parnell-Turner, R.E. 313 & Yoerger, D., 2013. Crustal Heterogeneity and Stratigraphy on the Mid-Atlantic 314 PARNELL-TURNER ET AL.: SEDIMENTATION AND DETACHMENT FAULTS 16...

  12. Fault current limiter

    DOE Patents [OSTI]

    Darmann, Francis Anthony

    2013-10-08

    A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium.

  13. Fault Current Limiters

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015Executive Order14, 20111,FYDepartment of5 NovemberFarms to FuelFault

  14. Fault Diagnosis of Steam Generator Using Signed Directed Graph and Artificial Neural Networks

    SciTech Connect (OSTI)

    Aly, Mohamed N. [Nuclear Eng. Department, Fac. of Eng., Alex. Univ., Alex. (Egypt); Hegazy, Hesham N. [Nuclear Power Plants Authority, Cairo (Egypt)

    2006-07-01

    Diagnosis is a very complex and important task for finding the root cause of faults in nuclear power plants. The objective of this paper is to investigate the feasibility of using the combination of signed directed graph (SDG) and artificial neural networks for fault diagnosis in nuclear power plants especially in U-Tube steam generator. Signed directed graph has been the most widely used form of qualitative based model methods for process fault diagnosis. It is constructed to represent the cause-effect relations among the dynamic process variables. Signed directed graph consists of nodes represent the process variables and branches. The branch represents the qualitative influence of a process variable on the related variable. The main problem in fault diagnosis using the signed directed graph is the unmeasured variables. Therefore, neural networks are used to estimate the values of unmeasured nodes. In this work, different four cases of faults in the steam generator ( SG) have been diagnosed, three of them are single fault and the fourth is multiple fault. The first three faults are by pass valve leakage (Vbp(+)), main feed water valve opening increase (Vfw(+)), main feed water valve opening decrease (Vfw (-)). The fourth fault is a multiple fault where by-pass valve leakage and main feed water valve opening decrease (Vbp(+) and Vfw (-)) in the same time. The used data are collected from a basic principle simulator of pressurized water reactor 925 Mwe. The signed directed graph of the steam generator is constructed to represent the cause-effect relations among SG variables. It consists of 26 nodes represent the SG variables, and 48 branches represent the cause effect relations among this variables. For each fault the values of measured nodes are coming from sensors and the values of unmeasured nodes are coming from the trained neural networks. These values of the nodes are compared by normal values to get the sign of the nodes. The cause-effect graph for each fault is constructed from the steam generator signed directed graph by removing the invalid (normal) nodes and inconsistent branches. Then in the cause-effect graph we search about the node which does not have an input branch. This node is the fault origin node. The result of this work demonstrated that this method can be used in nuclear power plant fault diagnosis. The advantages of this method are, it enables us to diagnose a multi fault, it is not restricted by pre-defined faults, and it is fast method. (authors)

  15. Colorado Regional Faults

    SciTech Connect (OSTI)

    Hussein, Khalid

    2012-02-01

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Originator: Colorado Geological Survey (CGS) Publication Date: 2012 Title: Regional Faults Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science, University of Colorado, Boulder Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: This layer contains the regional faults of Colorado Spatial Domain: Extent: Top: 4543192.100000 m Left: 144385.020000 m Right: 754585.020000 m Bottom: 4094592.100000 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS’1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System 1984 (WGS ’984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  16. Optimized Fault Location Final Project Report

    E-Print Network [OSTI]

    Optimized Fault Location Final Project Report Power Systems Engineering Research Center A National Engineering Research Center Optimized Fault Location Concurrent Technologies Corporation Final Project Report

  17. Observer-based fault detection for nuclear reactors

    E-Print Network [OSTI]

    Li, Qing, 1972-

    2001-01-01

    This is a study of fault detection for nuclear reactor systems. Basic concepts are derived from fundamental theories on system observers. Different types of fault- actuator fault, sensor fault, and system dynamics fault ...

  18. Arc fault detection system

    DOE Patents [OSTI]

    Jha, Kamal N. (Bethel Park, PA)

    1999-01-01

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard.

  19. Arc fault detection system

    DOE Patents [OSTI]

    Jha, K.N.

    1999-05-18

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard. 1 fig.

  20. Normal, Not Paracompact Spaces

    E-Print Network [OSTI]

    Fleissner, William G.

    1982-07-01

    We describe some recently constructed counterexamples in general topology, including a normal, nonmetrizable Moore space, a normal para-Lindelof, not paracompact space, and a normal, screenable, not paracompact space....

  1. Simulation and optimization of a two-wheeled, ball- flinging robot

    E-Print Network [OSTI]

    Chen, Po-Ting

    2010-01-01

    Wheeled, Ball-Flinging Robot A thesis submitted in partiala Two-Wheeled, Ball-Flinging Robot by Po-Ting Chen Master ofremote controlled robot. The robot is maneuverable and

  2. The experimental determination of the dynamic radial stiffness of an angular contact ball bearing 

    E-Print Network [OSTI]

    Schmidt, Brent Lee

    2001-01-01

    To evaluate the A. B. Jones bearing stiffness predictions on an angular contact ball bearing, experimental testing on an angular contact ball bearing was conducted. Objectives of the testing were to determine the effects of thrust load, rotational...

  3. A Look Through the Crystal Ball at the Future of Automobile Battery...

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

    A Look Through the Crystal Ball at the Future of Automobile Battery Recycling Title A Look Through the Crystal Ball at the Future of Automobile Battery Recycling Publication Type...

  4. Hot Pot Detail - Evidence of Quaternary Faulting

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    2013-06-27

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  5. Hot Pot Detail - Evidence of Quaternary Faulting

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  6. THE PLASTIC BALL - A MULTI-DETECTOR, LARGE SOLID ANGLE SPECTROMETER WITH CHARGED PARTICLE IDENTIFICATION FOR THE BEVALAC

    E-Print Network [OSTI]

    Maier, M.R.

    2012-01-01

    of charged particles in a Plastic Ball module. (XBL 7910-of Califomia. THE PLASTIC BALL - A MULTI-DETECTOR, LARGEBerkeley, California Summary PLASTIC 8/>Ll PLASTIC WALL For

  7. Billiards Digest November, 2012 "VEPP Part VIII: 8-Ball Pattern Drills" ILLUSTRATED PRINCIPLES

    E-Print Network [OSTI]

    Alciatore, David G.

    Billiards Digest November, 2012 "VEPP ­ Part VIII: 8-Ball Pattern Drills" ILLUSTRATED PRINCIPLES-dave-billiards.com/vepp. Last month, we looked at some useful 9-ball pattern drills from Disc III: "VEPP III ­ Patterns and Safety Play." This month, we look at some 8-ball pattern drills, also from the 3 rd DVD. You can work

  8. Comparison of Hydraulic-Burst and Ball-on-Ring Tests for Measuring Biaxial Strength

    E-Print Network [OSTI]

    Matthewson, M. John

    Comparison of Hydraulic-Burst and Ball-on-Ring Tests for Measuring Biaxial Strength Anupa Simpatico­0909 The statistics of failure of the hydraulic-burst (HB) test were compared with those of the ball-on-ring (BOR tests are ball-on-ring (BOR) and ring-on-ring (ROR); however, hydraulic-burst (HB) tests also have

  9. Fault-tolerant TCP mechanisms 

    E-Print Network [OSTI]

    Satapati, Suresh Kumar

    2000-01-01

    While fault-tolerance is supported by a variety of critical services that can be accessed over the Internet, they are not robust in that they are oblivious of the impact of their tolerant mechanisms on the service they ...

  10. Superconducting fault current-limiter with variable shunt impedance

    DOE Patents [OSTI]

    Llambes, Juan Carlos H; Xiong, Xuming

    2013-11-19

    A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance. The second impedance of the variable-impedance shunt(s) is a lower impedance than the first impedance, which facilitates current flow through the variable-impedance shunt(s) during a recovery transition of the superconducting element from the normal resistive state to the superconducting state, and thus, facilitates recovery of the superconducting element under load.

  11. Internal structure of the Kern Canyon Fault, California: a deeply exhumed strike-slip fault 

    E-Print Network [OSTI]

    Neal, Leslie Ann

    2002-01-01

    Deformation and mineral alteration adjacent to a 2 km long segment of the Kern Canyon fault near Lake Isabella, California are studied to characterize the internal structure of the fault zone and to understand the development of fault structure...

  12. A High shear stress segment along the San Andreas Fault: Inferences based on near-field stress direction and stress magnitude observations in the Carrizo Plain Area

    SciTech Connect (OSTI)

    Castillo, D. A., [Department of Geology and Geophysics, University of Adelaide (Australia); Younker, L.W. [Lawrence Livermore National Lab., CA (United States)

    1997-01-30

    Nearly 200 new in-situ determinations of stress directions and stress magnitudes near the Carrizo plain segment of the San Andreas fault indicate a marked change in stress state occurring within 20 km of this principal transform plate boundary. A natural consequence of this stress transition is that if the observed near-field ``fault-oblique`` stress directions are representative of the fault stress state, the Mohr-Coulomb shear stresses resolved on San Andreas sub-parallel planes are substantially greater than previously inferred based on fault-normal compression. Although the directional stress data and near-hydrostatic pore pressures, which exist within 15 km of the fault, support a high shear stress environment near the fault, appealing to elevated pore pressures in the fault zone (Byerlee-Rice Model) merely enhances the likelihood of shear failure. These near-field stress observations raise important questions regarding what previous stress observations have actually been measuring. The ``fault-normal`` stress direction measured out to 70 km from the fault can be interpreted as representing a comparable depth average shear strength of the principal plate boundary. Stress measurements closer to the fault reflect a shallower depth-average representation of the fault zone shear strength. If this is true, only stress observations at fault distances comparable to the seismogenic depth will be representative of the fault zone shear strength. This is consistent with results from dislocation monitoring where there is pronounced shear stress accumulation out to 20 km of the fault as a result of aseismic slip within the lower crust loading the upper locked section. Beyond about 20 km, the shear stress resolved on San Andreas fault-parallel planes becomes negligible. 65 refs., 15 figs.

  13. Evaluation of the location and recency of faulting near prospective surface facilities in Midway Valley, Nye County, Nevada

    SciTech Connect (OSTI)

    Swan, F.H.; Wesling, J.R.; Angell, M.M.; Thomas, A.P.; Whitney, J.W.; Gibson, J.D.

    2002-01-17

    Evaluation of surface faulting that may pose a hazard to prospective surface facilities is an important element of the tectonic studies for the potential Yucca Mountain high-level radioactive waste repository in southwestern Nevada. For this purpose, a program of detailed geologic mapping and trenching was done to obtain surface and near-surface geologic data that are essential for determining the location and recency of faults at a prospective surface-facilities site located east of Exile Hill in Midway Valley, near the eastern base of Yucca Mountain. The dominant tectonic features in the Midway Valley area are the north- to northeast-trending, west-dipping normal faults that bound the Midway Valley structural block-the Bow Ridge fault on the west side of Exile Hill and the Paint-brush Canyon fault on the east side of the valley. Trenching of Quaternary sediments has exposed evidence of displacements, which demonstrate that these block-bounding faults repeatedly ruptured the surface during the middle to late Quaternary. Geologic mapping, subsurface borehole and geophysical data, and the results of trenching activities indicate the presence of north- to northeast-trending faults and northwest-trending faults in Tertiary volcanic rocks beneath alluvial and colluvial sediments near the prospective surface-facilities site. North to northeast-trending faults include the Exile Hill fault along the eastern base of Exile Hill and faults to the east beneath the surficial deposits of Midway Valley. These faults have no geomorphic expression, but two north- to northeast-trending zones of fractures exposed in excavated profiles of middle to late Pleistocene deposits at the prospective surface-facilities site appear to be associated with these faults. Northwest-trending faults include the West Portal and East Portal faults, but no disruption of Quaternary deposits by these faults is evident. The western zone of fractures is associated with the Exile Hill fault. The eastern zone of fractures is within Quaternary alluvial sediments, but no bedrock was encountered in trenches and soil pits in this part of the prospective surface facilities site; thus, the direct association of this zone with one or more bedrock faults is uncertain. No displacement of lithologic contacts and soil horizons could be detected in the fractured Quaternary deposits. The results of these investigations imply the absence of any appreciable late Quaternary faulting activity at the prospective surface-facilities site.

  14. Sandia Energy - PV Arc-Fault and Ground Fault Detection and Mitigation...

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

    Program Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics PV Systems Reliability PV Arc-Fault and Ground Fault Detection and Mitigation Program PV...

  15. Reconstruction from Radon projections and orthogonal expansion on a ball

    E-Print Network [OSTI]

    Yuan Xu

    2007-05-14

    The relation between Radon transform and orthogonal expansions of a function on the unit ball in $\\RR^d$ is exploited. A compact formula for the partial sums of the expansion is given in terms of the Radon transform, which leads to algorithms for image reconstruction from Radon data. The relation between orthogonal expansion and the singular value decomposition of the Radon transform is also exploited.

  16. Laboratoire de l'Informatique du Paralllisme cole Normale Suprieure de Lyon

    E-Print Network [OSTI]

    Benoit, Anne

    Laboratoire de l'Informatique du Parallélisme École Normale Supérieure de Lyon Unité Mixte de Recherche CNRS-INRIA-ENS LYON-UCBL no 5668 Fault Tolerant Scheduling of Precedence Task Graphs Normale Supérieure de Lyon 46 Allée d'Italie, 69364 Lyon Cedex 07, France Téléphone : +33

  17. Laboratoire de l'Informatique du Paralllisme cole Normale Suprieure de Lyon

    E-Print Network [OSTI]

    Benoit, Anne

    Laboratoire de l'Informatique du Parallélisme École Normale Supérieure de Lyon Unité Mixte de Recherche CNRS-INRIA-ENS LYON-UCBL no 5668 Realistic Models and Efficient Algorithms for Fault Tolerant No 2008-09 École Normale Supérieure de Lyon 46 Allée d'Italie, 69364 Lyon Cedex 07, France Téléphone : +33

  18. Sensor Fault Detection and Isolation System 

    E-Print Network [OSTI]

    Yang, Cheng-Ken

    2014-08-01

    The purpose of this research is to develop a Fault Detection and Isolation (FDI) system which is capable to diagnosis multiple sensor faults in nonlinear cases. In order to lead this study closer to real world applications ...

  19. Boullier The fault zone geology 1 Fault zone geology: lessons from drilling through the Nojima and 1

    E-Print Network [OSTI]

    Boyer, Edmond

    Boullier The fault zone geology 1 Fault zone geology: lessons from active faults with the aim of 11 learning about the geology of the fault all 18 their objectives, have still contributed to a better geological

  20. Final Project Report: Self-Correcting Controls for VAV System Faults Filter/Fan/Coil and VAV Box Sections

    SciTech Connect (OSTI)

    Brambley, Michael R.; Fernandez, Nicholas; Wang, Weimin; Cort, Katherine A.; Cho, Heejin; Ngo, Hung; Goddard, James K.

    2011-05-01

    This report addresses original research by the Pacific Northwest National Laboratory for the California Institute for Energy and Environment on self-correcting controls for variable-air-volume (VAV) heating, ventilating and air-conditioning systems and focuses specifically on air handling and VAV box components of the air side of the system. A complete set of faults for these components was compiled and a fault mode analysis performed to understand the detectable symptoms of the faults and the chain of causation. A set of 26 algorithms was developed to facilitate the automatic correction of these faults in typical commercial VAV systems. These algorithms include training tests that are used during commissioning to develop models of normal system operation, passive diagnostics used to detect the symptoms of faults, proactive diagnostics used to diagnose the cause of a fault, and finally fault correction algorithms. Ten of the twenty six algorithms were implemented in a prototype software package that interfaces with a test bed facility at PNNL's Richland, WA, laboratory. Measurement bias faults were instigated in the supply-air temperature sensor and the supply-air flow meter to test the algorithms developed. The algorithms as implemented in the laboratory software correctly detected, diagnosed and corrected these faults. Finally, an economic and impact assessment was performed for the State of California for deployment of self-correcting controls. Assuming 15% HVAC energy savings and a modeled deployment profile, 3.1-5.8 TBu of energy savings are possible by year 15.

  1. Fault Models for Quantum Mechanical Switching Networks

    E-Print Network [OSTI]

    Jacob Biamonte; Jeff S. Allen; Marek A. Perkowski

    2010-01-19

    The difference between faults and errors is that, unlike faults, errors can be corrected using control codes. In classical test and verification one develops a test set separating a correct circuit from a circuit containing any considered fault. Classical faults are modelled at the logical level by fault models that act on classical states. The stuck fault model, thought of as a lead connected to a power rail or to a ground, is most typically considered. A classical test set complete for the stuck fault model propagates both binary basis states, 0 and 1, through all nodes in a network and is known to detect many physical faults. A classical test set complete for the stuck fault model allows all circuit nodes to be completely tested and verifies the function of many gates. It is natural to ask if one may adapt any of the known classical methods to test quantum circuits. Of course, classical fault models do not capture all the logical failures found in quantum circuits. The first obstacle faced when using methods from classical test is developing a set of realistic quantum-logical fault models. Developing fault models to abstract the test problem away from the device level motivated our study. Several results are established. First, we describe typical modes of failure present in the physical design of quantum circuits. From this we develop fault models for quantum binary circuits that enable testing at the logical level. The application of these fault models is shown by adapting the classical test set generation technique known as constructing a fault table to generate quantum test sets. A test set developed using this method is shown to detect each of the considered faults.

  2. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, J.R.

    1997-02-04

    A fault current limiter for an electrical circuit is disclosed. The fault current limiter includes a high temperature superconductor in the electrical circuit. The high temperature superconductor is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter. 15 figs.

  3. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL)

    1997-01-01

    A fault current limiter (10) for an electrical circuit (14). The fault current limiter (10) includes a high temperature superconductor (12) in the electrical circuit (14). The high temperature superconductor (12) is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter (10).

  4. Thrust faulting in Temblor Range, Kern County, California

    SciTech Connect (OSTI)

    Simonson, R.R.

    1991-02-01

    Surface and subsurface studies confirm the presence of overthrusting in the Temblor Range between Gonyer Canyon and Recruit Pass. In the subsurface, three wells have penetrated the Cree fault, the Hudbay Cree' No. 1 (7,300 ft), the Frantzen Oil Company Cree' No. 1 (5,865 ft) and the Arco Cree Fee' 1A well (5,915 ft). Below the fault, 25 to 35{degree} of westerly dips on the west flank of the sub-thrust Phelps anticline are encountered. The McDonald section below the fault is comprised of siliceous fractured shale which contains live oil and gas showings. A drill-stem test of the interval from 8,247 to 8,510 ft in the Frantzen well resulted in a recovery of 1,200 ft clean 34{degree} oil and 40 MCF per day gas. The shut in pressure was 3,430 lb, which is a normal hydrostatic pressure common to the producing structures in the southern San Joaquin Valley. The equivalent of this interval has produced over 7,000 bbl of oil in the Arco Cree' 1A well. The Arco Cree Fee' No. 1A well crossed the axis of the Phelps Anticline as indicated by good dipmeter and bottomed in Lower Zemorrian at 14,512 ft total depth. This well was not drilled deep enough to reach the Point of Rocks Sand and did not test the gas showings in the lower Miocene section. In the Gonyer Canyon area, subsurface evidence indicated conditions are similar to those in the Cree area because a large structure is present below a thrust fault. It is believed that significant accumulations will be found beneath thrust faults in the eastern part of the Temblor Range where conditions are similar to those that were instrumental in forming fields such as the Elk Hills, B. V. Hills, Belgian Anticline and others.

  5. Ball lightning as a possible manifestation of high-temperature superconductivity in Nature

    E-Print Network [OSTI]

    B. L. Birbrair

    2001-02-06

    In the superconducting medium the circular current supported by its own magnetic field can exist giving rise to the possible underlying mechanism for the ball lightning.

  6. Ball lightning as a possible manifestation of high-temperature superconductivity in Nature

    E-Print Network [OSTI]

    Birbrair, B L

    2001-01-01

    In the superconducting medium the circular current supported by its own magnetic field can exist giving rise to the possible underlying mechanism for the ball lightning.

  7. Three-dimensional Plasmas R. L. Dewar; P. Cuthbert; R. Ball 70...

    Office of Scientific and Technical Information (OSTI)

    of Three-dimensional Plasmas R. L. Dewar; P. Cuthbert; R. Ball 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;...

  8. Little Black Holes:Dark Matter And Ball Lightning

    E-Print Network [OSTI]

    Mario Rabinowitz

    2002-12-11

    Small,quiescent black holes can be considered as candidates for the missing dark matter of the universe,and as the core energy source of ball lightning.By means of gravitational tunneling,directed radiation is emitted from black holes in a process much attenuated from that of Hawking radiation,P SH, which has proven elusive to detect.Gravitational tunneling emission is similar to electric field emission of electronsfrom a metal in that a second body is involved which lowers the barrier and gives the barrier a finite rather than infinite width.Hawking deals with a single isolated black hole.

  9. Establishment of the mathematical model for diagnosing the engine valve faults by genetic

    E-Print Network [OSTI]

    Fernandez, Thomas

    1 Establishment of the mathematical model for diagnosing the engine valve faults by genetic of the proposed strategy is validated by an illustrative example, in which three kinds of valve states inherent in a six- cylinders/four-stroke cycle diesel engine, i.e. normal condition, valve-tappet clearance and gas

  10. Ball-grid array architecture for microfabricated ion traps

    E-Print Network [OSTI]

    Nicholas D. Guise; Spencer D. Fallek; Kelly E. Stevens; K. R. Brown; Curtis Volin; Alexa W. Harter; Jason M. Amini; Robert E. Higashi; Son Thai Lu; Helen M. Chanhvongsak; Thi A. Nguyen; Matthew S. Marcus; Thomas R. Ohnstein; Daniel W. Youngner

    2015-05-05

    State-of-the-art microfabricated ion traps for quantum information research are approaching nearly one hundred control electrodes. We report here on the development and testing of a new architecture for microfabricated ion traps, built around ball-grid array (BGA) connections, that is suitable for increasingly complex trap designs. In the BGA trap, through-substrate vias bring electrical signals from the back side of the trap die to the surface trap structure on the top side. Gold-ball bump bonds connect the back side of the trap die to an interposer for signal routing from the carrier. Trench capacitors fabricated into the trap die replace area-intensive surface or edge capacitors. Wirebonds in the BGA architecture are moved to the interposer. These last two features allow the trap die to be reduced to only the area required to produce trapping fields. The smaller trap dimensions allow tight focusing of an addressing laser beam for fast single-qubit rotations. Performance of the BGA trap as characterized with $^{40}$Ca$^+$ ions is comparable to previous surface-electrode traps in terms of ion heating rate, mode frequency stability, and storage lifetime. We demonstrate two-qubit entanglement operations with $^{171}$Yb$^+$ ions in a second BGA trap.

  11. Imaging Faults with Reverse-Time Migration for Geothermal Exploration at Jemez Pueblo in New Mexico

    SciTech Connect (OSTI)

    Huang, Lianjie; Albrecht, Michael; Kaufman, Greg; Kelley, Shari; Rehfeldt, Kenneth; Zhang, Zhifu

    2011-01-01

    The fault zones at Jemez Pueblo may dominate the flow paths of hot water, or confine the boundaries of the geothermal reservoir. Therefore, it is crucial to image the geometry of these fault zones for geothermal exploration in the area. We use reverse-time migration with a separation imaging condition to image the faults at Jemez Pueblo. A finite-difference full-wave equation method with a perfectly-matching-layer absorbing boundary condition is used for backward propagation of seismic reflection data from receivers and forward propagation of wavefields from sources. In the imaging region, the wavefields are separated into the upgoing and downgoing waves, and leftgoing and rightgoing waves. The upgoing and downgoing waves are used to obtain the downward-looking image, and the leftgoing and rightgoing waves are used to form the left-looking image and right-looking image from sources. The left-looking and right-looking images are normally weaker than the downward-looking image because the reflections from the fault zones are much weaker than those from sedimentary layers, but these migration results contain the images of the faults. We apply our reverse-time migration with a wavefield separation imaging condition to seismic data acquired at Jemez Pueblo, and our preliminary results reveal many faults in the area.

  12. Experiment 13 The Motion of a Beach Ball in the Air

    E-Print Network [OSTI]

    Pantaleone, Jim

    103 Experiment 13 The Motion of a Beach Ball in the Air Purpose: The air surrounding a projectile and the added mass. The added mass is an increase in the projectile's inertia from the motion of the air around. Messer and J. Pantaleone, `The Effective Mass of a Ball in the Air', The Physics Teacher, Vol. 48, 52

  13. Method and apparatus for jetting, manufacturing and attaching uniform solder balls

    DOE Patents [OSTI]

    Yost, Frederick G. (Cedar Crest, NM); Frear, Darrel R. (Albuquerque, NM); Schmale, David T. (Albuquerque, NM)

    1999-01-01

    An apparatus and process for jetting molten solder in the form of balls directly onto all the metallized interconnects lands for a ball grid array package in one step with no solder paste required. Molten solder is jetted out of a grid of holes using a piston attached to a piezoelectric crystal. When voltage is applied to the crystal it expands forcing the piston to extrude a desired volume of solder through holes in the aperture plate. When the voltage is decreased the piston reverses motion creating an instability in the molten solder at the aperture plate surface and thereby forming spherical solder balls that fall onto a metallized substrate. The molten solder balls land on the substrate and form a metallurgical bond with the metallized lands. The size of the solder balls is determined by a combination of the size of the holes in the aperture plate, the duration of the piston pulse, and the displacement of the piston. The layout of the balls is dictated by the location of the hooks in the grid. Changes in ball size and layout can be easily accomplished by changing the grid plate. This invention also allows simple preparation of uniform balls for subsequent supply to BGA users.

  14. Billiards Digest October, 2012 "VEPP Part VII: 9-Ball Pattern Drills" ILLUSTRATED PRINCIPLES

    E-Print Network [OSTI]

    Alciatore, David G.

    Billiards Digest October, 2012 "VEPP ­ Part VII: 9-Ball Pattern Drills" ILLUSTRATED PRINCIPLES-dave-billiards.com/vepp. In the last few months, we've looked at useful position control drills from Disc II. This month, we look at some 9-ball pattern drills from Disc III: "VEPP III ­ Patterns and Safety Play." You can work on cut

  15. Ball-in-Tube Linearization Example Lab 5: Nonlinear Control for a Flexible Joint

    E-Print Network [OSTI]

    ), and the parameter C can be estimated from system data (e.g., by analyzing the acceleration of the ball when input u System Implementation Laboratory Abstract One of the laboratory design challenges is the balls applied to the motor. That is, T = Cv2 in (1) where T is the thrust generated by a van driven by voltage

  16. Fault-tolerant dynamic task graph scheduling

    SciTech Connect (OSTI)

    Kurt, Mehmet C.; Krishnamoorthy, Sriram; Agrawal, Kunal; Agrawal, Gagan

    2014-11-16

    In this paper, we present an approach to fault tolerant execution of dynamic task graphs scheduled using work stealing. In particular, we focus on selective and localized recovery of tasks in the presence of soft faults. We elicit from the user the basic task graph structure in terms of successor and predecessor relationships. The work stealing-based algorithm to schedule such a task graph is augmented to enable recovery when the data and meta-data associated with a task get corrupted. We use this redundancy, and the knowledge of the task graph structure, to selectively recover from faults with low space and time overheads. We show that the fault tolerant design retains the essential properties of the underlying work stealing-based task scheduling algorithm, and that the fault tolerant execution is asymptotically optimal when task re-execution is taken into account. Experimental evaluation demonstrates the low cost of recovery under various fault scenarios.

  17. A fault location approach for fuzzy fault section estimation on radial distribution feeders 

    E-Print Network [OSTI]

    Andoh, Kwame Sarpong

    2000-01-01

    Locating the faulted section of a distribution system is a difficult task because of lack of accurate system models and the presence of uncertainty in the data used for estimating the fault section. Many of the methods used to account...

  18. Seismoelectric Imaging of a Shallow Fault System Employing Fault Guided Waves 

    E-Print Network [OSTI]

    Cohrs, Frelynn Joseph Reese

    2012-07-16

    . The seismic data revealed dispersive energy packets, indicative of guided waves, within the fault zone and absent in the surrounding lithologies. The seismoelectric data was able to produce comparable signals in the fault zone showing guided waves....

  19. Realistic fault modeling and quality test generation of combined delay faults 

    E-Print Network [OSTI]

    Thadhlani, Ajaykumar A

    2001-01-01

    With increasing operating speed and shrinking technology, timing defects in integrated circuits are becoming increasingly important. The well established stuck-at-fault model is not sufficient because it is a static fault model and does not account...

  20. Morphological and magnetic characterization of Fe, Co, and FeCo nanoplates and nanoparticles prepared by surfactants-assisted ball milling

    E-Print Network [OSTI]

    Liu, J. Ping

    a high-energy ball milling machine for 1­20 h with hardened steel balls. The handling of the starting

  1. Earthquake Nucleation on Geometrically Complex Faults

    E-Print Network [OSTI]

    Fang, Zijun

    2009-01-01

    Preseismic fault slip and earthquake prediction, J. Geophys.Day, The 1999 Izmit, Turkey, earthquake: A 3D dynamic stresstransfer model of intra-earthquake triggering, Bull.

  2. Earthquake Nucleation on Geometrically Complex Faults

    E-Print Network [OSTI]

    Fang, Zijun

    2009-01-01

    fault slip and earthquake prediction, J. Geophys. Res. , [implications for an earthquake prediction field monitoringpredictions of hypocenter location and occurrence time of earthquakes,

  3. On electromagnetic models of ball lightning with topological structure

    E-Print Network [OSTI]

    Donoso, J M; Trueba, J L

    2003-01-01

    It has been long admitted that a consequence of the virial theorem is that there can be no equilibrium configurations of a system of charges in electromagnetic interaction in the absence of external forces. However, recent results have shown that the virial theorem can not preclude the existence of certain nontrivial equilibrium configurations. Although some of these new results are based on an effective microscopic field theory, they are important for a theory of ball lightning that has been developed by the authors of the present work. Other theoretical results relative to magnetic force-free fields with field aligned currents and self-organized filamentary structures are also found to be relevant for this model.

  4. Accurate resistive bridge fault modeling, simulation, and test generation 

    E-Print Network [OSTI]

    Sar-Dessai, Vijay Ramesh

    1999-01-01

    Resistive bridging faults in CMOS combinational circuits are studied in this work. Bridging faults are modeled using HSPICE circuit simulation of the various types of bridging faults that can occur in CMOS combinational ...

  5. Earthquake behavior and structure of oceanic transform faults

    E-Print Network [OSTI]

    Roland, Emily Carlson

    2012-01-01

    Oceanic transform faults that accommodate strain at mid-ocean ridge offsets represent a unique environment for studying fault mechanics. Here, I use seismic observations and models to explore how fault structure affects ...

  6. Fault Intersection | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbHFarinello Geothermal Power Station JumpFaroeFaulk County,Fault

  7. Fault Mapping | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbHFarinello Geothermal Power Station JumpFaroeFaulk County,FaultMapping

  8. Investigation of active faulting at the Emigrant Peak fault in Nevada using shallow seismic reflection and ground penetrating radar

    E-Print Network [OSTI]

    Christie, Michael Wayne

    2007-12-18

    The objective of this study was to assess fault displacement, off-fault deformation, and alluvial fan stratigraphy at the Emigrant Peak fault zone (EPFZ) in Fish Lake Valley, Nevada utilizing shallow seismic reflection (SSR) and ground penetrating...

  9. Evaluation of faulting characteristics and ground acceleration associated with recent movement along the Meers Fault, Southwestern Oklahoma 

    E-Print Network [OSTI]

    Burrell, Richard Dennis

    1997-01-01

    being cited as responsible for the Meers Fault scarp. Earthquakes of magnitude 7 to 8 occurring in conjunction with recent reactivation of the fault have been calculated. However, evidence found within the Wichita Mountains just south of the fault...

  10. Improving Distribution System Reliability Through Risk-base Doptimization of Fault Management and Improved Computer-based Fault Location 

    E-Print Network [OSTI]

    Dong, Yimai

    2013-11-07

    regulation on power quality. Optimization in fault management tasks has the potential of improving system reliability by reducing the duration and scale of outages caused by faults through fast fault isolation and service restoration. The research reported...

  11. PERSPECTIVES Deep Earthquakes: A Fault Too Big?

    E-Print Network [OSTI]

    Stein, Seth

    PERSPECTIVES Deep Earthquakes: A Fault Too Big? Seth Stein Because deep Earth processes are inacces. Recent results for the mys- terious deep earthquakes that occur to depths greater than 600 km is that large deep earthquakes (1-3) seem to have occurred on faults larger than ex- pected from the competing

  12. INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS

    E-Print Network [OSTI]

    Povinelli, Richard J.

    INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS by Aderiano M. da Silva, B.S. A Thesis;i Abstract Induction motors are used worldwide as the "workhorse" in industrial applications material. However, induction motor faults can be detected in an initial stage in order to prevent

  13. Sensor Fault Diagnosis Using Principal Component Analysis 

    E-Print Network [OSTI]

    Sharifi, Mahmoudreza

    2010-07-14

    The purpose of this research is to address the problem of fault diagnosis of sensors which measure a set of direct redundant variables. This study proposes: 1. A method for linear senor fault diagnosis 2. An analysis of isolability and detectability...

  14. Physiochemical Evidence of Faulting Processes and Modeling of Fluid in Evolving Fault Systems in Southern California

    SciTech Connect (OSTI)

    Boles, James [Professor

    2013-05-24

    Our study targets recent (Plio-Pleistocene) faults and young (Tertiary) petroleum fields in southern California. Faults include the Refugio Fault in the Transverse Ranges, the Ellwood Fault in the Santa Barbara Channel, and most recently the Newport- Inglewood in the Los Angeles Basin. Subsurface core and tubing scale samples, outcrop samples, well logs, reservoir properties, pore pressures, fluid compositions, and published structural-seismic sections have been used to characterize the tectonic/diagenetic history of the faults. As part of the effort to understand the diagenetic processes within these fault zones, we have studied analogous processes of rapid carbonate precipitation (scaling) in petroleum reservoir tubing and manmade tunnels. From this, we have identified geochemical signatures in carbonate that characterize rapid CO2 degassing. These data provide constraints for finite element models that predict fluid pressures, multiphase flow patterns, rates and patterns of deformation, subsurface temperatures and heat flow, and geochemistry associated with large fault systems.

  15. Self-triggering superconducting fault current limiter

    DOE Patents [OSTI]

    Yuan, Xing (Albany, NY); Tekletsadik, Kasegn (Rexford, NY)

    2008-10-21

    A modular and scaleable Matrix Fault Current Limiter (MFCL) that functions as a "variable impedance" device in an electric power network, using components made of superconducting and non-superconducting electrically conductive materials. The matrix fault current limiter comprises a fault current limiter module that includes a superconductor which is electrically coupled in parallel with a trigger coil, wherein the trigger coil is magnetically coupled to the superconductor. The current surge doing a fault within the electrical power network will cause the superconductor to transition to its resistive state and also generate a uniform magnetic field in the trigger coil and simultaneously limit the voltage developed across the superconductor. This results in fast and uniform quenching of the superconductors, significantly reduces the burnout risk associated with non-uniformity often existing within the volume of superconductor materials. The fault current limiter modules may be electrically coupled together to form various "n" (rows).times."m" (columns) matrix configurations.

  16. Evolution of Frictional Behavior of Punchbowl Fault Gouges Sheared at Seismic Slip Rates and Mechanical and Hydraulic Properties of Nankai Trough Accretionary Prism Sediments Deformed at Different Loading Paths 

    E-Print Network [OSTI]

    Kitajima, Hiroko

    2012-02-14

    Frictional measurements were made on natural fault gouge at seismic slip rates using a high-speed rotary-shear apparatus to study effects of slip velocity, acceleration, displacement, normal stress, and water content. ...

  17. MECHATRONIC DESIGN OF A BALL ON PLATE BALANCING SYSTEM Shorya Awtar

    E-Print Network [OSTI]

    Awtar, Shorya

    MECHATRONIC DESIGN OF A BALL ON PLATE BALANCING SYSTEM Shorya Awtar Kevin C. Craig Department system based on mechatronic design principles. Realization of the design is achieved of the course Mechatronics System Design at Rensselaer. 1. MECHATRONICS AT RENSSELAER Mechatronics

  18. Micro-Ball Lens Array Fabrication in Photoresist Using Ptfe Hydrophobic Effect

    E-Print Network [OSTI]

    Shyu Ruey Fang; Tsai Wen Ren; Tsai Jhy Cherng

    2007-01-01

    This paper presents a simple method to fabricate micro-ball lens and its array. The key technology is to use the hydrophobic characteristics of polyterafluoroethylene (PTFE) substrate. High contact angle between melted photoresist pattern and PTFE can generate micro-ball lens and its array. PTFE thin film was spun onto a silicon wafer and dried in oven. Photoresist AZ4620 was used to pattern micro-columns with different diameters 60, 70 and 80 $\\mu$m. A thermal reflow process then was applied to melt these micro-column patterns resulted in micro-ball lens array. The achieved micro-ball lens array with diameter 98 $\\mu$m was fabricated using 80 $\\mu$m in diameter patterns. This method provides a simple fabrication process and low material cost.

  19. Development of a Digital Controller for a Vertical Wind Tunnel (VWT) Prototype to Mitigate Ball Fluctuations 

    E-Print Network [OSTI]

    Silva, Ramon A.

    2011-08-08

    The objective of this research was to mitigate fluctuations of a levitated ping pong ball within a vertical wind tunnel (VWT) prototype. This was made possible by remodeling the VWT system with its inherent nonlinear characteristics instead...

  20. Exciton matter sustained by colossal dispersive interactions due to enhanced polarizability: Possible clue to ball lightning

    E-Print Network [OSTI]

    Georgiev, M; Georgiev, Mladen; Singh, Jai

    2005-01-01

    Recently Gilman has pointed out that the material state of a ball lightning is both highly cohesive and flexible. He makes a specific proposal for a cohesive state arising from (colossal) Van-der-Waals attraction between highly polarizable Rydberg atoms produced under a linear lightning. We accept his general suggestions but propose that the colossal Van-der-Waals coupling may also arise from the enhanced polarizability of surrogate molecular clusters, due to the polaron gap narrowing effect. We consider a few illuminating cases and present calculations for the ammonia molecule. Although being unable to identify the exact nature of the surrogate molecules at least for the time-being, we suggest a general scenario of photoexcited vibronic excitons forming a supersaturated surrogate gas phase in which a ball arises as a result of condensation. The orange color of the luminous ball is due to radiative exciton deexcitation and suggests that there may be a unique surrogate material for ball lightning.

  1. Porosity in collapsible Ball Grid Array solder joints

    SciTech Connect (OSTI)

    Gonzalez, C.A. |

    1998-05-01

    Ball Grid Array (BGA) technology has taken off in recent years due to the increased need for high interconnect density. Opposite to all the advantages BGA packages offer, porosity in collapsible BGA solder joints is often a major concern in the reliability of such packages. The effect of pores on the strength of collapsible BGA solder-joints was studied by manufacturing samples with different degrees of porosity and testing them under a shear load. It was found that the shear strength of the solder joints decreased in a linear fashion with increasing porosity. Failure occurred by internal necking of the interpore matrix. It was confirmed that entrapment of flux residues leads to porosity by manufacturing fluxless samples in a specially made furnace, and comparing them with samples assembled using flux. Also, contamination of Au electrodeposits (in substrate metallization) was determined to cause significant porosity. It was found that hard-Au (Co hardened Au) electrodeposits produce high degrees of porosity even in the absence of flux. Finally, increasing the time the solder spends in the molten state was proven to successfully decrease porosity.

  2. Magnetic Interactions in Ball-Milled Spinel Ferrites

    E-Print Network [OSTI]

    Goya, Gerardo F

    2011-01-01

    Spinel Fe3O4 nanoparticles have been produced through ball milling in methyl-alcohol (CH3OH), aiming to obtain samples with similar average particle sizes and different interparticle interactions. Three samples having Fe3O4/CH3(OH) mass ratios R of 3 %, 10 % and 50 % wt. were milled for several hours until particle size reached a steady value ( ~ 7-10 nm). A detailed study of static and dynamic magnetic properties has been undertaken by measuring magnetization, ac susceptibility and M\\"ossbauer data. As expected for small particles, the Verwey transition was not observed, but instead superparamagnetic (SPM) behavior was found with transition to a blocked state at TB ~ 10-20 K. Spin disorder of the resulting particles, independent of its concentration, was inferred from the decrease of saturation magnetization MS at low temperatures. For samples having 3% wt. of magnetic particles, dynamic ac susceptibility measurements show a thermally activated Arrhenius dependence of the blocking temperature with applied f...

  3. Mechanical Models of Fault-Related Folding

    SciTech Connect (OSTI)

    Johnson, A. M.

    2003-01-09

    The subject of the proposed research is fault-related folding and ground deformation. The results are relevant to oil-producing structures throughout the world, to understanding of damage that has been observed along and near earthquake ruptures, and to earthquake-producing structures in California and other tectonically-active areas. The objectives of the proposed research were to provide both a unified, mechanical infrastructure for studies of fault-related foldings and to present the results in computer programs that have graphical users interfaces (GUIs) so that structural geologists and geophysicists can model a wide variety of fault-related folds (FaRFs).

  4. Fault-Tolerant Exact State Transmission

    E-Print Network [OSTI]

    Zhao-Ming Wang; Lian-Ao Wu; Michele Modugno; Wang Yao; Bin Shao

    2012-05-02

    We show that a category of one-dimensional XY-type models may enable high-fidelity quantum state transmissions, regardless of details of coupling configurations. This observation leads to a fault- tolerant design of a state transmission setup. The setup is fault-tolerant, with specified thresholds, against engineering failures of coupling configurations, fabrication imperfections or defects, and even time-dependent noises. We propose the implementation of the fault-tolerant scheme using hard-core bosons in one-dimensional optical lattices.

  5. Cooperative application/OS DRAM fault recovery.

    SciTech Connect (OSTI)

    Ferreira, Kurt Brian; Bridges, Patrick G. (University of New Mexico, Albuquerque, NM); Heroux, Michael Allen; Hoemmen, Mark; Brightwell, Ronald Brian

    2012-05-01

    Exascale systems will present considerable fault-tolerance challenges to applications and system software. These systems are expected to suffer several hard and soft errors per day. Unfortunately, many fault-tolerance methods in use, such as rollback recovery, are unsuitable for many expected errors, for example DRAM failures. As a result, applications will need to address these resilience challenges to more effectively utilize future systems. In this paper, we describe work on a cross-layer application/OS framework to handle uncorrected memory errors. We illustrate the use of this framework through its integration with a new fault-tolerant iterative solver within the Trilinos library, and present initial convergence results.

  6. Fault Detection and Diagnosis in Building HVAC Systems

    E-Print Network [OSTI]

    Najafi, Massieh

    2010-01-01

    of outside air condition, occupant behavior, and buildingair condition and occupant behavior) and fault condition (

  7. Development and evolution of detachment faulting along 50 km of the Mid-Atlantic Ridge near 16.5ºN

    E-Print Network [OSTI]

    Smith, Deborah K.; Schouten, Hans; Dick, Henry; Cann, Joe; Salters, Vincent; Marschall, Horst R.; Ji, Fuwu; Yoerger, Dana; Sanfilippo, Alessio; Parnell-Turner, Ross; Palmiotto, Camilla; Zheleznov, Alexei; Bai, Hailong; Junkin, Will; Urann, Ben; Dick, Spencer; Sulanowska, Margaret; Lemmond, Peter; Curry, Scott

    2014-12-05

    [Smith et al., 2003] yielding a 119 6 remarkable average of about one earthquake (roughly > magnitude 2.5-3.0), every three days. 120 Based on seismicity rate and their interpretation of the morphology, Escartín et al. [2008] 121 concluded... to the volcanic axis, was interpreted as a newly emerging normal fault 101 forming a rafted block on top of the older West Ridge detachment fault. Seafloor photographs 102 from a camera tow near the top of East Ridge show steep fault scarps cutting pillow lavas...

  8. Initiation of the San Jacinto Fault and its Interaction with the San Andreas Fault: Insights from Geodynamic Modeling

    E-Print Network [OSTI]

    Liu, Mian

    Initiation of the San Jacinto Fault and its Interaction with the San Andreas Fault: Insights from Geodynamic Modeling QINGSONG LI 1,2 and MIAN LIU 1 Abstract--The San Andreas Fault (SAF) is the Pacific is accommodated by the San Jacinto Fault (SJF). Here we investigate the initiation of the SJF and its interaction

  9. 1. Detect ground faults in PV arrays mounted on the roofs of 2. Interrupt the fault current

    E-Print Network [OSTI]

    Johnson, Eric E.

    1. Detect ground faults in PV arrays mounted on the roofs of dwellings 2. Interrupt the fault current 3. Indicate that a ground fault had occurred 4. Disconnect the faulted part of the PV array 5. "Crowbar" (short-circuit) the PV array The original GFPD prototype was developed in two versions that were

  10. Structure of the eastern Red Rocks and Wind Ridge thrust faults, Wyoming: how a thrust fault gains displacement along strike 

    E-Print Network [OSTI]

    Huntsman, Brent Stanley

    1983-01-01

    OF FIELD MAPPING Methods . Thrust Faults . The Wind Ridge Thrust Fault System The Red Rocks Thrust Fault System CLAY MODEL STUDIES Purpose and Description Model Results DISCUSSION OF RESULTS Kinematics of the Red Rocks Thrust Fault Termination... . Kinematics of the Southern Wind Ridge Thrust Fault . . . A Conceptual Model of the Red Rocks Thrust Fault Termination Implications of the Red Rocks Fault Termination . . . . . . Page V1 V11 1X X1 X11 7 9 17 18 18 21 24 27 35 35 38 49 49...

  11. A connecting network with fault tolerance capabilities

    SciTech Connect (OSTI)

    Ciminiera, L.; Serra, A.

    1986-06-01

    A new multistage interconnection network is presented in this paper. It is able to handle the communications between the connected devices correctly, even in the presence of fault(s) in the network. This goal is achieved by using redundant paths with a fast procedure able to dynamically reroute the message. It is also shown that the rerouting properties are still valid when broadcasting transmission is used.

  12. Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent Observation

    E-Print Network [OSTI]

    Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent-tolerant sensor network configuration problem for a target navigation. A sensor network system consists of many sensor nodes and its network connections. Each sensor node can exchange information by wireless

  13. Realization of User Level Fault Tolerant Policy Management through a Holistic Approach for Fault Correlation

    SciTech Connect (OSTI)

    Park, Byung H [ORNL; Naughton, III, Thomas J [ORNL; Agarwal, Pratul K [ORNL; Bernholdt, David E [ORNL; Geist, Al [ORNL; Tippens, Jennifer L [ORNL

    2011-01-01

    Many modern scientific applications, which are designed to utilize high performance parallel com- puters, occupy hundreds of thousands of computational cores running for days or even weeks. Since many scien- tists compete for resources, most supercomputing centers practice strict scheduling policies and perform meticulous accounting on their usage. Thus computing resources and time assigned to a user is considered invaluable. However, most applications are not well prepared for un- foreseeable faults, still relying on primitive fault tolerance techniques. Considering that ever-plunging mean time to interrupt (MTTI) is making scientific applications more vulnerable to faults, it is increasingly important to provide users not only an improved fault tolerant environment, but also a framework to support their own fault tolerance policies so that their allocation times can be best utilized. This paper addresses a user level fault tolerance policy management based on a holistic approach to digest and correlate fault related information. It introduces simple semantics with which users express their policies on faults, and illustrates how event correlation techniques can be applied to manage and determine the most preferable user policies. The paper also discusses an implementation of the framework using open source software, and demonstrates, as an example, how a molecular dynamics simulation application running on the institutional cluster at Oak Ridge National Laboratory benefits from it.

  14. Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault

    E-Print Network [OSTI]

    Savage, Heather M.

    Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault damage zones Heather M. Savage1,2 and Emily E. Brodsky1 Received 22 April 2010; revised 10 of fracture distributions as a function of displacement to determine whether damage around small and large

  15. Measuring and Modeling Fault Density for Plume-Fault Encounter Probability Estimation

    SciTech Connect (OSTI)

    Jordan, P.D.; Oldenburg, C.M.; Nicot, J.-P.

    2011-05-15

    Emission of carbon dioxide from fossil-fueled power generation stations contributes to global climate change. Storage of this carbon dioxide within the pores of geologic strata (geologic carbon storage) is one approach to mitigating the climate change that would otherwise occur. The large storage volume needed for this mitigation requires injection into brine-filled pore space in reservoir strata overlain by cap rocks. One of the main concerns of storage in such rocks is leakage via faults. In the early stages of site selection, site-specific fault coverages are often not available. This necessitates a method for using available fault data to develop an estimate of the likelihood of injected carbon dioxide encountering and migrating up a fault, primarily due to buoyancy. Fault population statistics provide one of the main inputs to calculate the encounter probability. Previous fault population statistics work is shown to be applicable to areal fault density statistics. This result is applied to a case study in the southern portion of the San Joaquin Basin with the result that the probability of a carbon dioxide plume from a previously planned injection had a 3% chance of encountering a fully seal offsetting fault.

  16. Fault Detection and Load Distribution for the Wind Farm Challenge

    SciTech Connect (OSTI)

    Borchehrsen, Anders B.; Larsen, Jesper A.; Stoustrup, Jakob

    2014-08-24

    In this paper a fault detection system and a fault tolerant controller for a wind farm model. The wind farm model used is the one proposed as a public challenge. In the model three types of faults are introduced to a wind farm consisting of nine turbines. A fault detection system designed, by taking advantage of the fact that within a wind farm several wind turbines will be operating under all most identical conditions. The turbines are then grouped, and then turbines within each group are used to generate residuals for turbines in the group. The generated residuals are then evaluated using dynamical cumulative sum. The designed fault detection system is cable of detecting all three fault types occurring in the model. But there is room for improving the fault detection in some areas. To take advantage of the fault detection system a fault tolerant controller for the wind farm has been designed. The fault tolerant controller is a dispatch controller which is estimating the possible power at each individual turbine and then setting the reference accordingly. The fault tolerant controller has been compared to a reference controller. And the comparison shows that the fault tolerant controller performance better in all measures. The fault detection and a fault tolerant controller has been designed, and based on the simulated results the overall performance of the wind farm is improved on all measures. Thereby this is a step towards improving the overall performance of current and future wind farms.

  17. Normal Conducting CLIC Technology

    E-Print Network [OSTI]

    Jensen, E

    2006-01-01

    The CLIC (Compact Linear Collider) multi-lateral study group based at CERN is studying the technology for an electron-positron linear collider with a centre-of-mass energy up to 5 TeV. In contrast to the International Linear Collider (ILC) study which has chosen to use super-conducting cavities with accelerating gradients in the range of 30-40 MV/m to obtain centre-of-mass collision energies of 0.5-1 TeV, the CLIC study aims to use a normal-conducting system based on two-beam technology with gradients of 150 MV/m. It is generally accepted that this change in technology is not only necessary but the only viable choice for a cost-effective multi-TeV collider. The CLIC study group is studying the technology issues of such a machine, and is in particular developing state-of-the-art 30 GHz molybdenum-iris accelerating structures and power extraction and transfer structures (PETS). The accelerating structure has a new geometry which includes fully-profiled RF surfaces optimised to minimize surface fields, and hybri...

  18. Three-dimensional displacement-length scaling and maximum dimension of normal faults in layered rocks

    E-Print Network [OSTI]

    and Scholz, 2000], (2) linkage [e.g., Cartwright et al., 1995] or (3) variations in rock properties [Bu on a 30­70° dipping bedding plane of early Maestrichtian continental limestone in the lignite quarry from

  19. Stepover or Relay Ramp in Normal Fault Zones | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren) Jumpand

  20. Formation mechanism of the atmospheric ball lightning using the triple Beltrami equation

    E-Print Network [OSTI]

    Taveira, A M A; Taveira, Ana Marcia Alves; Sakanaka, Paulo Hiroshi

    2004-01-01

    Ball lightning, also known as fire ball, is a luminous globe which occurs in the course of a thunderstorm. Taking as model of fire ball, the two fluid plasma consisting of electrons and one species ions, and considering that the plasma flow is a finite quantity, we can derive the equation of relaxed energy state, maintaining the helicity constant, in the form of triple Beltramiequations for the magnetic field: s curl x curl x curl x B + p curl x curl x B +q curl xB +r B = 0. Where B is the magnetic field s, p, q, and r are constants to be determined through boundary conditions. This equation is coupled with an equation which describes the hydrodynamic vortex. The problem of the formation of an isolated luminous mass in the sky and the moderate persistence of the resulting form combined with observations of ball lightning describing hollow globes, surface coronas and rapid rotation led to theories depicting ball lightning as a vortex. We explore the solutions of this equation using the method of Chandrasekhar-...

  1. Normal Conducting CLIC Technology

    SciTech Connect (OSTI)

    Jensen, Erk

    2006-01-03

    The CLIC (Compact Linear Collider) multi-lateral study group based at CERN is studying the technology for an electron-positron linear collider with a centre-of-mass energy up to 5 TeV. In contrast to the International Linear Collider (ILC) study which has chosen to use super-conducting cavities with accelerating gradients in the range of 30-40 MV/m to obtain centre-of-mass collision energies of 0.5-1 TeV, the CLIC study aims to use a normal-conducting system based on two-beam technology with gradients of 150 MV/m. It is generally accepted that this change in technology is not only necessary but the only viable choice for a cost-effective multi-TeV collider. The CLIC study group is studying the technology issues of such a machine, and is in particular developing state-of-the-art 30 GHz molybdenum-iris accelerating structures and power extraction and transfer structures (PETS). The accelerating structure has a new geometry which includes fully-profiled RF surfaces optimised to minimize surface fields, and hybrid damping using both iris slots and radial waveguides. A newly-developed structure-optimisation procedure has been used to simultaneously balance surface fields, power flow, short and long-range transverse wakefields, RF-to-beam efficiency and the ratio of luminosity to input power. The slotted irises allow a simple structure fabrication by high-precision high-speed 3D milling of just four pieces, and an even easier bolted assembly in a vacuum chamber.

  2. New Revelation of Lightning Ball Observation and Proposal for a Nuclear Reactor Fusion Experiment

    E-Print Network [OSTI]

    Domokos Tar

    2009-10-12

    In this paper, the author brings further details regarding his Lightning Ball observation that were not mentioned in the first one (Ref.1-2). Additionally, he goes more into detail as the three forces that are necessary to allow the residual crescent form the hydrodynamic vortex ring to shrink into a sphere.Further topics are the similarities and analogies between the Lightning Ball formation's theory and the presently undertaken Tokamak-Stellarator-Spheromak fusion reactor experiments. A new theory and its experimental realisation are proposed as to make the shrinking of the hot plasma of reactors into a ball possible by means of the so called long range electromagnetic forces. In this way,the fusion ignition temperature could possibly atteined.

  3. Control design and robustness analysis of a ball and plate system by using polynomial chaos

    SciTech Connect (OSTI)

    Colón, Diego; Balthazar, José M.; Reis, Célia A. dos; Bueno, Átila M.; Diniz, Ivando S.; Rosa, Suelia de S. R. F.

    2014-12-10

    In this paper, we present a mathematical model of a ball and plate system, a control law and analyze its robustness properties by using the polynomial chaos method. The ball rolls without slipping. There is an auxiliary robot vision system that determines the bodies' positions and velocities, and is used for control purposes. The actuators are to orthogonal DC motors, that changes the plate's angles with the ground. The model is a extension of the ball and beam system and is highly nonlinear. The system is decoupled in two independent equations for coordinates x and y. Finally, the resulting nonlinear closed loop systems are analyzed by the polynomial chaos methodology, which considers that some system parameters are random variables, and generates statistical data that can be used in the robustness analysis.

  4. New Revelation of Lightning Ball Observation and Proposal for a Nuclear Reactor Fusion Experiment

    E-Print Network [OSTI]

    Tar, Domokos

    2009-01-01

    In this paper, the author brings further details regarding his Lightning Ball observation that were not mentioned in the first one (Ref.1-2). Additionally, he goes more into detail as the three forces that are necessary to allow the residual crescent form the hydrodynamic vortex ring to shrink into a sphere.Further topics are the similarities and analogies between the Lightning Ball formation's theory and the presently undertaken Tokamak-Stellarator-Spheromak fusion reactor experiments. A new theory and its experimental realisation are proposed as to make the shrinking of the hot plasma of reactors into a ball possible by means of the so called long range electromagnetic forces. In this way,the fusion ignition temperature could possibly atteined.

  5. New physics in a nutshell, or Q-ball as a power plant

    E-Print Network [OSTI]

    Gia Dvali; Alexander Kusenko; Mikhail Shaposhnikov

    1997-10-30

    Future experiments may discover new scalar particles with global charges and couplings that allow for solitonic states. If the effective potential has flat directions, the scalar VEV inside a large Q-ball can exceed the particle mass by many orders of magnitude. Models with low-energy supersymmetry breaking generically have both the scalars carrying some global charges, and the flat directions. The Q-ball interior can, therefore, provide an environment for exploring physics far beyond the TeV scale without the need for building colliders of ever-increasing energies. Some Standard Model processes, otherwise strongly suppressed, can also be studied inside the soliton, where the SU(2) symmetry can be restored, and the quark confinement may be absent. Baryon number violating processes catalyzed by the large VEV inside the Q-ball can provide an inexhaustible energy resource.

  6. Faulted joints: kinematics, displacementlength scaling relations and criteria for their identication

    E-Print Network [OSTI]

    Engelder, Terry

    and kinematics based on two sets of joints, pinnate joints and fault striations, reveal that some mesoscale faults (i.e., faults without linked fault segments) at the mesoscale: ªneoformed faultsº which form

  7. A Hybrid Model Based and Statistical Fault Diagnosis System for Industrial Process 

    E-Print Network [OSTI]

    Lin, Chen-Han

    2014-11-21

    This thesis presents a hybrid model based and statistical fault diagnosis system, which applied on the nonlinear three-tank model. The purpose of fault diagnosis is generating and analyzing the residual to find out the fault occurrence. This fault...

  8. VCSEL fault location apparatus and method

    DOE Patents [OSTI]

    Keeler, Gordon A. (Albuquerque, NM); Serkland, Darwin K. (Albuquerque, NM)

    2007-05-15

    An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of light which is coupled into an optical fiber under test. The VCSEL is subsequently reconfigured by changing a bias voltage thereto and is used as a resonant-cavity photodetector (RCPD) to detect a portion of the test light pulse which is reflected or scattered from any fault within the optical fiber. A time interval .DELTA.t between an instant in time when the test light pulse is generated and the time the reflected or scattered portion is detected can then be used to determine the location of the fault within the optical fiber.

  9. Titania Prepared by Ball Milling: Its Characterization and Application as Liquefied Petroleum Gas Sensor

    E-Print Network [OSTI]

    Yadav, B C; Singh, Satyendra; Yadav, T P

    2012-01-01

    Present paper reports the LPG sensing of TiO2 obtained through ball milling. The milled powder was characterized by XRD, TEM and UV-visible spectroscopy. Further the ball milled powder was compressed in to pellet using hydraulic press. This pellet was investigated with the exposure of LPG. Variations in resistance with exposure of LPG to the sensing pellet were recorded. The sensitivity of the sensor was ~ 11 for 5 vol.% of LPG. Response and recovery times of the sensor were ~ 100 and 250 sec. The sensor was quite sensitive to LPG and results were found reproducible within 91%.

  10. Textures and conditions of formation of Middle Pennsylvanian coal balls, central United States

    E-Print Network [OSTI]

    Perkins, T. W.

    1976-04-30

    of the swamp water (Zone 3 of Fig. 5). Coal balls containing plant remains that are aligned in planes paralleling the coal laminae may have formed in parts of the swamp far enough inland from the sea that the tidal currents were not powerful enough to pulverize... of the swamp water (Zone 3 of Fig. 5). Coal balls containing plant remains that are aligned in planes paralleling the coal laminae may have formed in parts of the swamp far enough inland from the sea that the tidal currents were not powerful enough to pulverize...

  11. Discrete Elements Method: A New Kind of Initial Conditions - Tetrahedral Packing of Balls

    E-Print Network [OSTI]

    Mark A. Tsayger

    2014-12-15

    The Paper discusses the use of the regular packing of identical balls with the coordination number 4 as a model of a medium consisting of fluid and solid particles in the conditions of fluidization. It is proposed to use the examined packing of balls as an initial condition for the calculations by the Discrete Elements Method (DEM) in technological processes in the fluidized bed in industry, as well as in the modeling of processes that occur in hydraulic and pneumatic transport of granular materials. Filtration properties of such packing required for its use as an initial condition in calculations by DEM are estimated.

  12. Discrete Elements Method: A New Kind of Initial Conditions - Tetrahedral Packing of Balls

    E-Print Network [OSTI]

    Mark A. Tsayger

    2015-10-13

    The Paper discusses the use of the regular packing of identical balls with the coordination number 4 as a model of a medium consisting of fluid and solid particles in the conditions of fluidization. It is proposed to use the examined packing of balls as an initial condition for the calculations by the Discrete Elements Method (DEM) in technological processes in the fluidized bed in industry, as well as in the modeling of processes that occur in hydraulic and pneumatic transport of granular materials. Filtration properties of such packing required for its use as an initial condition in calculations by DEM are estimated.

  13. Fault-tolerant three-level inverter

    DOE Patents [OSTI]

    Edwards, John; Xu, Longya; Bhargava, Brij B.

    2006-12-05

    A method for driving a neutral point clamped three-level inverter is provided. In one exemplary embodiment, DC current is received at a neutral point-clamped three-level inverter. The inverter has a plurality of nodes including first, second and third output nodes. The inverter also has a plurality of switches. Faults are checked for in the inverter and predetermined switches are automatically activated responsive to a detected fault such that three-phase electrical power is provided at the output nodes.

  14. Development of a bridge fault extractor tool 

    E-Print Network [OSTI]

    Bhat, Nandan D.

    2005-02-17

    are tools that analyze chip layouts and produce a realistic list of bridging faults within that chip. FedEx, previously developed at Texas A&M University, extracts all two-node intralayer bridges of any given chip layout and optionally extracts all two...) for this tool which aids in more effectively visualizing the bridge faults across the chip. The final aim of this thesis was to perform FedEx output analysis to understand the nature of the defects, such as variation of critical area (the area where...

  15. Motivation Methodology Conclusions A Fault Tolerance Bisimulation Proof for

    E-Print Network [OSTI]

    Francalanza, Adrian

    Motivation Methodology Conclusions A Fault Tolerance Bisimulation Proof for Consensus Adrian of Somewhere and Elsewhere A Fault Tolerance Bisimulation Proof for Consensus #12;Motivation Methodology Conclusions Outline 1 Motivation 2 Methodology 3 Conclusions Adrian Francalanza, Matthew Hennessy Universities

  16. Upper crustal faulting in an obliquely extending orogen, structural...

    Open Energy Info (EERE)

    field in the central Coso Range, eastern California, image brittle faults and other structures in a zone of localized crustal extension between two major strike-slip faults. The...

  17. Occupancy Based Fault Detection on Building Level - a Feasibility Study 

    E-Print Network [OSTI]

    Tuip, B.; Houten, M.; Trcka, M.; Hensen, M.

    2010-01-01

    -line, self learning fault detection tool on building level. Taking passive user behavior into account, the tool aims to distinguish real faults from unexpected user behavior. An artificial neural network model is used to predict building energy consumption...

  18. Two Similarity Measure Approaches to Whole Building Fault Diagnosis 

    E-Print Network [OSTI]

    Lin, G.; Claridge, D.

    2012-01-01

    similarity are defined and the methodology for implementing the proposed whole building fault diagnosis approaches is presented. Cosine similarity and Euclidean distance similarity are applied to two field observed fault test cases, and both the cosine...

  19. Dining philosophers with masking tolerance to crash faults 

    E-Print Network [OSTI]

    Idimadakala, Vijaya K.

    2009-05-15

    We examine the tolerance of dining philosopher algorithms subject to process crash faults in arbitrary conflict graphs. This classic problem is unsolvable in asynchronous message-passing systems subject to even a single crash fault. By contrast...

  20. Synthesis and evaluation of fault-tolerant quantum computer architectures

    E-Print Network [OSTI]

    Cross, Andrew W. (Andrew William), 1979-

    2005-01-01

    Fault-tolerance is the cornerstone of practical, large-scale quantum computing, pushed into its prominent position with heroic theoretical efforts. The fault-tolerance threshold, which is the component failure probability ...

  1. Development of a Hydrologic Characterization Technology for Fault Zones Final Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2014-01-01

    times by triggering a GFCI (Ground Fault Circuit Interrupt).time, rain caused a GFCI (ground fault circuit interrupt),

  2. Structural and microstructural changes in monoclinic ZrO{sub 2} during the ball-milling with stainless steel assembly

    SciTech Connect (OSTI)

    Stefanic, G. . E-mail: stefanic@irb.hr; Music, S.; Gajovic, A.

    2006-04-13

    High-energy ball-milling of monoclinic ZrO{sub 2} was performed in air using the planetary ball mill with a stainless steel milling assembly. Structural and microstructural changes during the ball-milling were monitored using X-ray powder diffraction, Raman spectroscopy, Moessbauer spectroscopy, field emission scanning electron microscopy and energy dispersive X-ray spectrometry. The results of line broadening analysis indicated a decrease in the crystallite size and an increase in the microstrains with the ball-milling time increased up to {approx}150 min. The results of quantitative phase analysis indicated the presence of a very small amount of tetragonal ZrO{sub 2} phase in this early stage of ball-milling. The onset of m-ZrO{sub 2} {sup {yields}} t-ZrO{sub 2} transition occurred between 10 and 15 h of ball-milling, which resulted in a complete transition after 20 h of ball-milling. Further ball-milling caused a decrease of the t-ZrO{sub 2} lattice parameters followed by a probable transition into c-ZrO{sub 2}. It was concluded that the stabilization of t- and c-ZrO{sub 2} polymorphs at RT can be attributed to the incorporation of aliovalent cations (Fe{sup 2+}, Fe{sup 3+} and Cr{sup 3+}) introduced into the sample due to the wear and oxidation of the milling media.

  3. Fault-Tolerant Non-interference Extended Version

    E-Print Network [OSTI]

    Russo, Alejandro

    a fault (induced by holding a light-bulb near the processor!) triggers a single bit flip in a malicious

  4. Adjustable direct current and pulsed circuit fault current limiter

    DOE Patents [OSTI]

    Boenig, Heinrich J.; Schillig, Josef B.

    2003-09-23

    A fault current limiting system for direct current circuits and for pulsed power circuit. In the circuits, a current source biases a diode that is in series with the circuits' transmission line. If fault current in a circuit exceeds current from the current source biasing the diode open, the diode will cease conducting and route the fault current through the current source and an inductor. This limits the rate of rise and the peak value of the fault current.

  5. Deep drilling phase of the Pen Brand Fault Program

    SciTech Connect (OSTI)

    Stieve, A.

    1991-05-15

    This deep drilling activity is one element of the Pen Branch Fault Program at Savannah River Site (SRS). The effort will consist of three tasks: the extension of wells PBF-7 and PBF-8 into crystalline basement, geologic and drilling oversight during drilling operations, and the lithologic description and analysis of the recovered core. The drilling program addresses the association of the Pen Branch fault with order fault systems such as the fault that formed the Bunbarton basin in the Triassic.

  6. Detachment Faulting & Geothermal Resources- Pearl Hot Spring, NV

    Broader source: Energy.gov [DOE]

    Detachment Faulting & Geothermal Resources - Pearl Hot Spring, NV presentation at the April 2013 peer review meeting held in Denver, Colorado.

  7. ELECTROMAGNETIC IMAGES OF THE TINTINA FAULT (NORTHERN CANADIAN CORDILLERA)

    E-Print Network [OSTI]

    Jones, Alan G.

    ELECTROMAGNETIC IMAGES OF THE TINTINA FAULT (NORTHERN CANADIAN CORDILLERA) Juanjo Ledo1 , Alan G to obtain a crustal scale electromagnetic image of the fault. A short, higher station density profile-dimensional (2- D) electromagnetic behavior of the fault. Distortion decomposition of the responses corroborated

  8. NASA Technical Memorandum 89098 The Fault-Tree Compiler

    E-Print Network [OSTI]

    Butler, Ricky W.

    L - NASA Technical Memorandum 89098 The Fault-Tree Compiler Anna L. Martensen Ricky W. Butler in preliminary design analysis. The goal of the Fault Tree Compiler (m)program is to provide the user with a tool also be performed, providing the user The motivation for the development of the Fault Tree Compiler

  9. Development of the Global Earthquake Model's neotectonic fault database

    E-Print Network [OSTI]

    New Hampshire, University of

    Development of the Global Earthquake Model's neotectonic fault database Annemarie Christophersen1 database and a unique graphical interface for the compilation of new fault data. A key design principle is that of an electronic field notebook for capturing observations a geologist would make about a fault. The database

  10. Synthesizing Round Based FaultTolerant Programs using Genetic Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    Synthesizing Round Based Fault­Tolerant Programs using Genetic Programming Ling Zhu and Sandeep based distributed fault­tolerant programs using stack based genetic pro­ gramming. Our approach evolves a fault­tolerant program based on a round based structure and the program specification. To permit

  11. Statistical estimation of multiple faults in aircraft gas turbine engines

    E-Print Network [OSTI]

    Ray, Asok

    415 Statistical estimation of multiple faults in aircraft gas turbine engines S Sarkar, C Rao of multiple faults in aircraft gas-turbine engines, based on a statistical pattern recognition tool called commercial aircraft engine. Keywords: aircraft propulsion, gas turbine engines, multiple fault estimation

  12. Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems Xue Lin 1 , Yanzhi, yanzhiwa, dizhu, pedram}@usc.edu, 2 naehyuck@elpl.snu.ac.kr ABSTRACT Photovoltaic energy harvesting systems, Performance, Reliability. Keywords Photovoltaic System, Fault Detection, Fault Tolerance, Photovoltaic Panel

  13. Symbolic Dynamic Analysis of Transient Time Series for Fault

    E-Print Network [OSTI]

    Ray, Asok

    Symbolic Dynamic Analysis of Transient Time Series for Fault Detection in Gas Turbine Engines paper presents a symbolic dynamics-based method for detection of incipient faults in gas turbine engines dynamics, fault detection, aircraft gas turbine engines 1 Introduction Performance monitoring of aircraft

  14. The effects of lithology and initial fault angle in physical models of fault-propagation folds 

    E-Print Network [OSTI]

    McLain, Christopher Thomas

    2001-01-01

    with a weak brittle layer that deforms by faulting and fracturing (dried pottery clay simulates an interbedded siliciclastic unit). The models were deformed in a triaxial deformation rig at confining pressure of 50 Mpa at room temperature. Each model...

  15. An algorithm for faulted phase and feeder selection under high impedance fault conditions 

    E-Print Network [OSTI]

    Benner, Carl Lee

    1988-01-01

    . One method based on increases in third and fifth harmonic symmetrical current components under high impedance fault conditions has been proposed by Balser et. Journal model is IEEE Transactions on Power Delivery. al, of Power Technologies Inc [1...

  16. Unifying sensor fault detection with energy conservation

    E-Print Network [OSTI]

    Dobson, Simon

    Unifying sensor fault detection with energy conservation Lei Fang and Simon Dobson School energy usage. Section 2 presents our framework, which is evaluated in section 3 by means of some reliability. Sensors are often energy-hungry and cannot operate over the long term, and the data they gather

  17. Symmetrical Fault Analysis 1.0 Definition

    E-Print Network [OSTI]

    McCalley, James D.

    , shunt admittances, and -Y phase shifts are neglected. Synchronous machines (generators and motors-286]. We begin with the simplest of examples. 3.0 Example Consider a single generator supplying an R that will be faulted). Eg: steady-state internal gen voltage Xd: synchronous (steady-state) reactance IL: load

  18. All row, planar fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens; Pinnow, Kurt Walter; Ratterman, Joseph D; Smith, Brian Edward

    2013-07-23

    An apparatus, program product and method for detecting nodal faults may simultaneously cause designated nodes of a cell to communicate with all nodes adjacent to each of the designated nodes. Furthermore, all nodes along the axes of the designated nodes are made to communicate with their adjacent nodes, and the communications are analyzed to determine if a node or connection is faulty.

  19. Safety Requirements and Fault Trees using Retrenchment

    E-Print Network [OSTI]

    Banach, Richard

    this initial model has been created, the elicitation of safety requirements yields a fresh set of criteria are applied, the information linking the design and the safety assessment phases is often carried outSafety Requirements and Fault Trees using Retrenchment R. Banach and R. Cross Computer Science

  20. A Family-Centric Genealogy Visualization Paradigm Robert Ball and David Cook

    E-Print Network [OSTI]

    Ball, Robert

    A Family-Centric Genealogy Visualization Paradigm Robert Ball and David Cook Stephen F. Austin State University Department of Computer Science {ballrg | cookda}@sfasu.edu ABSTRACT Genealogy is a way for future behavior. Genealogical visualizations are used to help understand and share the story of the past

  1. Precision Stabilization Simulation of a Ball Joint Gimbaled Mirror Using Advanced MATLAB

    E-Print Network [OSTI]

    Hernandez, Orlando

    Precision Stabilization Simulation of a Ball Joint Gimbaled Mirror Using Advanced MATLAB, they suffer from the common problems of weight and power requirements, and mechanical envelope constraints gimbaled mirror using advanced MATLAB tools and packages. 1. Introduction Our goal in this work

  2. FOB Undergoing Test and Alignment in FAS at Ball Aerospace OPTICAL TESTS AND ALIGNMENTS

    E-Print Network [OSTI]

    Schneider, Glenn

    FOB Undergoing Test and Alignment in FAS at Ball Aerospace OPTICAL TESTS AND ALIGNMENTS After the FOB alignment is complete, and it passes environmental tests, it will be checked out in a second HST. The NICMOS FOB will relay simulated images from RAS/HOMS to a Photometrics CCD camera placed where the three

  3. Billiards Digest September, 2012 "VEPP Part VI: Line-of-Balls Drill" ILLUSTRATED PRINCIPLES

    E-Print Network [OSTI]

    Alciatore, David G.

    Billiards Digest September, 2012 "VEPP ­ Part VI: Line-of-Balls Drill" ILLUSTRATED PRINCIPLES David-dave-billiards.com/vepp. Last month, we looked at useful center-of-table drills from Disc II: "VEPP II ­ Position Control and English." This month, we'll look at another type of position control drill, also from the second DVD

  4. High-speed X-ray imaging of a ball impacting on loose sand

    E-Print Network [OSTI]

    Homan, Tess; Lohse, Detlef; van der Meer, Devaraj

    2014-01-01

    When a ball is dropped in fine, very loose sand, a splash and subsequently a jet are ob- served above the bed, followed by a granular eruption. To directly and quantitatively determine what happens inside the sand bed, high-speed X-ray tomography measurements are carried out in a custom-made setup that allows for imaging of a large sand bed at atmospheric pressures. Herewith we show that the jet originates from the pinch-off point created by the collapse of the air cavity formed behind the penetrating ball.Subsequently we measure how the entrapped air bubble rises through the sand and show that this is consistent with bubbles rising in continuously fluidized beds. Finally, we measure the packing fraction variation throughout the bed. From this we show that there is (i) a compressed area of sand in front of and next to the ball while the ball is moving down, (ii) a strongly compacted region at the pinch-off height after the cavity collapse; and (iii) a relatively loosely packed center in the wake of the rising...

  5. The photo-balls and static solutions in NCQED with time attended

    E-Print Network [OSTI]

    Abolfazl Jafari

    2011-05-26

    We drive the potential of photon interaction from Feynman diagrams amplitudes, and we show that the photo-balls, can be produced in noncommutative electrodynamics with time attended but for the static and localized fields, the static solutions (the lumps) can not be exited.

  6. The"Core"of the Workout Should Be on the Ball

    E-Print Network [OSTI]

    are restrictive, focusing on one component per movement, rather than blending many components into one. Core into strength and conditioning protocols as a fundamental component of core training. This type of training ball to encompass as many components in a single movement as expertise and performance increases

  7. Statistical properties of position-dependent ball-passing networks in football games

    E-Print Network [OSTI]

    Narizuka, Takuma; Yamazaki, Yoshihiro

    2013-01-01

    Statistical properties of position-dependent ball-passing networks in real football games are examined. We find that the networks have the small-world property, and their degree distributions are fitted well by a truncated gamma distribution function. In order to reproduce these properties of networks, a model based on a Markov chain is proposed.

  8. Coordinated Fault Tolerance for High-Performance Computing

    SciTech Connect (OSTI)

    Dongarra, Jack; Bosilca, George; et al.

    2013-04-08

    Our work to meet our goal of end-to-end fault tolerance has focused on two areas: (1) improving fault tolerance in various software currently available and widely used throughout the HEC domain and (2) using fault information exchange and coordination to achieve holistic, systemwide fault tolerance and understanding how to design and implement interfaces for integrating fault tolerance features for multiple layers of the software stack—from the application, math libraries, and programming language runtime to other common system software such as jobs schedulers, resource managers, and monitoring tools.

  9. Marine and Land ActiveSource Seismic Imaging of midMiocene to Holoceneaged Faulting near Geothermal Prospects at Pyramid Lake, Nevada

    E-Print Network [OSTI]

    controls on geothermal systems and extensional regimes favor dilatational normal fault systems, which Geothermal Prospects at Pyramid Lake, Nevada Amy Eisses1,3, Annie Kell1,3, Graham Kent1,3, Neal Driscoll2 figure 1), a kinematically linked, en echelon system of leftstepping, dextral northwest striking

  10. Aerial photographic interpretation of lineaments and faults in late cenozoic deposits in the Eastern part of the Benton Range 1:100,000 quadrangle and the Goldfield, Last Chance Range, Beatty, and Death Valley Junction 1:100,000 quadrangles, Nevada and California

    SciTech Connect (OSTI)

    Reheis, M.C.; Noller, J.S.

    1991-09-01

    Lineaments and faults in Quaternary and late Tertiary deposits in the southern part of the Walker Lane are potentially active and form patterns that are anomalous with respect to the typical fault patterns in most of the Great Basin. Little work has been done to identify and characterize these faults, with the exception of those in the Death Valley-Furnace Creek (DVFCFZ) fault system and those in and near the Nevada Test Site. Four maps at a scale of 1:100,000 summarize the existing knowledge about these lineaments and faults based on extensive aerial-photo interpretation, limited field investigations, and published geologic maps. The lineaments and faults in all four maps can be divided geographically into two groups. The first group includes west- to north-trending lineaments and faults associated with the DVFCFZ and with the Pahrump fault zone in the Death Valley Junction quadrangle. The second group consists of north- to east-northeast-trending lineaments and faults in a broad area that lies east of the DVFCFZ and north of the Pahrump fault zone. Preliminary observations of the orientations and sense of slip of the lineaments and faults suggest that the least principle stress direction is west-east in the area of the first group and northwest-southeast in the area of the second group. The DVFCFZ appears to be part of a regional right-lateral strike-slip system. The DVFCFZ steps right, accompanied by normal faulting in an extensional zone, to the northern part of the Walker Lane a the northern end of Fish Lake Valley (Goldfield quadrangle), and appears to step left, accompanied by faulting and folding in a compressional zone, to the Pahrump fault zone in the area of Ash Meadows (Death Valley Junction quadrangle). 25 refs.

  11. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; ,

    2010-11-17

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  12. Chaotic breccia zones on the Pembroke Peninsula, South Wales: evidence for collapse into voids along dilational faults

    E-Print Network [OSTI]

    Woodcock, N. H.; Miller, A. V. M.; Woodhouse, C. D.

    2014-10-08

    .1 Terminology 109 110 The studied zones contain a range of breccias, particularly some with very large clasts (over 111 1 metre in diameter) referred to informally as megabreccias. Sedimentologically, such large-112 clast breccias would be termed boulder... -dipping beds. In moderately-dipping panels of 507 stratigraphy, deep-seated normal faults probably propagated by bedding-plane slip, with less 508 bed-normal dilation. 509 510 11.4. Objections to a “tectonic” origin for the megabreccia voids? 511 512...

  13. Dusky Dolphin (Lagenorhynchus obscurus) Underwater Bait-Balling Behaviors and Acoustic Signals: A Comparison Between Argentina and New Zealand 

    E-Print Network [OSTI]

    Vaughn, Robin

    2011-07-14

    I characterized dusky dolphin (Lagenorhynchus obscurus) underwater bait-balling behaviors and acoustic signals, and compared data between Argentina and New Zealand (NZ) to investigate the roles of ecology versus social learning. I quantified prey...

  14. Report on the Discrete Analysis Programme at INI. Keith Ball, Franck Barthe, Ben Green and Assaf Naor

    E-Print Network [OSTI]

    Report on the Discrete Analysis Programme at INI. Keith Ball, Franck Barthe, Ben Green and Assaf. The INI decided to experiment with streaming the lectures of the first INI workshop to Paris so

  15. Hardness variation and cyclic crystalline-amorphous phase transformation in CuZr alloy during ball milling

    E-Print Network [OSTI]

    Schoen, David Taylor

    2005-01-01

    The hardness and percent crystallinity of Cu33Zr67 powder samples are measured through several cycles of a cyclic phase transformation during ball milling. Each are found to cycle with a period of approximately 320 minutes. ...

  16. Preparation of Micrometer-to Sub-micrometer-Sized Nanostructured Silica Particles Using High-Energy Ball Milling

    E-Print Network [OSTI]

    Mitchell, Brian S.

    ,* and Yunfeng Lu Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana such as milling media (zirconia, stainless steel, or steel- centered nylon balls), milling time, and the presence

  17. Implications of Carbonate Petrology and Geochemistry for the Origin of Coal Balls from the Kalo Formation (Moscovian, Pennsylvanian) of Iowa 

    E-Print Network [OSTI]

    Jones, Courtney

    2012-10-19

    Coal balls are carbonate concretions formed in peat during the Pennsylvanian and early Permian. Microprobe and microscope analysis reveal that polycrystals of high-Mg calcite (HMC), which are also high in Sr, are the ...

  18. A Ball Lightning Model as a Possible Explanation of Recently Reported Cavity Lights

    SciTech Connect (OSTI)

    Fryberger, David; /SLAC

    2009-08-04

    The salient features of cavity lights, in particular, mobile luminous objects (MLO's), as have been experimentally observed in superconducting accelerator cavities, are summarized. A model based upon standard electromagnetic interactions between a small particle and the 1.5 GHz cavity excitation field is described. This model can explain some features of these data, in particular, the existence of particle orbits without wall contact. While this result is an important success for the model, it is detailed why the model as it stands is incomplete. It is argued that no avenues for a suitable extension of the model through established physics appear evident, which motivates an investigation of a model based upon a more exotic object, ball lightning. As discussed, further motivation derives from the fact that there are significant similarities in many of the qualitative features of ball lightning and MLO's, even though they appear in quite different circumstances and differ in scale by orders of magnitude. The ball lightning model, which incorporates electromagnetic charges and currents, is based on a symmetrized set of Maxwell's equations in which the electromagnetic sources and fields are characterized by a process called dyality rotation. It is shown that a consistent mathematical description of dyality rotation as a physical process can be achieved by adding suitable (phenomenological) current terms to supplement the usual current terms in the symmetrized Maxwell's equations. These currents, which enable the conservation of electric and magnetic charge, are called vacuum currents. It is shown that the proposed ball lightning model offers a good qualitative explanation of the perplexing aspects of the MLO data. Avenues for further study are indicated.

  19. Degree distribution of position-dependent ball-passing networks in football games

    E-Print Network [OSTI]

    Narizuka, Takuma; Yamazaki, Yoshihiro

    2015-01-01

    We propose a simple stochastic model describing the position-dependent ball-passing network in football games. In this network, a player on a certain area in the divided fields is a node, and a pass between two nodes corresponds to an edge. Our model is characterized by the consecutive choice of a node dependent on its intrinsic fitness. We derive the explicit expression of the degree distribution, and find that the derived distribution reproduces the real data quit well.

  20. Comments in support of the dipole model of ball lightning (BL)

    E-Print Network [OSTI]

    Soshnikov, V N

    2010-01-01

    The evaluations are presented justifying previously proposed dipole model of ball lightning (BL). The movement and energy supporting the dipole BL are due to the atmospheric electric field. Stability of the BL is due to the fundamental role of energy loss by radiation. An example is presented of calculating the stability of variant of BL. There is also a possible connection of stability BL with a statistical distributions of the atmospheric electric field in time and space.

  1. Development of Integrated Meso/Microscale Traffic Simulation Software for Testing Fault Detection and Handling in AHS

    E-Print Network [OSTI]

    Horowitz, Roberto

    2004-01-01

    Traffic Simulation Software for Testing Fault Detection andTraf?c Simulation Software for Testing Fault Detection andTraf?c Simulation Software for Testing Fault Detection and

  2. Features and Dimensions of the Hayward fault zone in the Strawberry and Blackberry Creek Area Berkeley, California

    E-Print Network [OSTI]

    Williams, P.L.

    2011-01-01

    Hayward Fault Zone in the Strawberry and Blackberry Creekward Fault Zone in the Strawberry and Blackberry Creek Area,Hayward fault zone in the Strawberry and Blackberry Creek

  3. Similarity Matching Techniques for Fault Diagnosis in Automotive Infotainment Electronics

    E-Print Network [OSTI]

    Kabir, Mashud

    2009-01-01

    Fault diagnosis has become a very important area of research during the last decade due to the advancement of mechanical and electrical systems in industries. The automobile is a crucial field where fault diagnosis is given a special attention. Due to the increasing complexity and newly added features in vehicles, a comprehensive study has to be performed in order to achieve an appropriate diagnosis model. A diagnosis system is capable of identifying the faults of a system by investigating the observable effects (or symptoms). The system categorizes the fault into a diagnosis class and identifies a probable cause based on the supplied fault symptoms. Fault categorization and identification are done using similarity matching techniques. The development of diagnosis classes is done by making use of previous experience, knowledge or information within an application area. The necessary information used may come from several sources of knowledge, such as from system analysis. In this paper similarity matching tec...

  4. Standard Practice for Determining Resistance of Solar Collector Covers to Hail by Impact With Propelled Ice Balls

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    1992-01-01

    1.1 This practice covers a procedure for determining the ability of cover plates for flat-plate solar collectors to withstand impact forces of falling hail. Propelled ice balls are used to simulate falling hailstones. This practice is not intended to apply to photovoltaic cells or arrays. 1.2 This practice defines two types of test specimens, describes methods for mounting specimens, specifies impact locations on each test specimen, provides an equation for determining the velocity of any size ice ball, provides a method for impacting the test specimens with ice balls, and specifies parameters that must be recorded and reported. 1.3 This practice does not establish pass or fail levels. The determination of acceptable or unacceptable levels of ice-ball impact resistance is beyond the scope of this practice. 1.4 The size of ice ball to be used in conducting this test is not specified in this practice. This practice can be used with various sizes of ice balls. 1.5 The categories of solar collector cover plat...

  5. Normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, M.B.; Efstratiadis, A.

    1997-06-10

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3{prime} noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. 4 figs.

  6. Normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

    1997-01-01

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library.

  7. Fault-induced delayed voltage recovery in a long inhomogeneous...

    Office of Scientific and Technical Information (OSTI)

    Article: Fault-induced delayed voltage recovery in a long inhomogeneous power-distribution feeder Citation Details In-Document Search This content will become publicly...

  8. Fault Tolerant Evaluation of Continuous Selection Queries over Sensor Data

    E-Print Network [OSTI]

    Lazaridis, Iosif; Han, Qi; Mehrotra, Sharad; Venkatasubramanian, Nalini

    2009-01-01

    Evaluation of Continuous Selection Queries over Sensor Dataevaluation of continuous selection queries (CSQs) over sensor-sensor suffices and there is no Fault Tolerant Evaluation of

  9. Post-Cretaceous faulting at head of Mississippi embayment

    SciTech Connect (OSTI)

    Nelson, W.J. (Illinois State Geological Survey, Champaign, IL (United States)); Harrison, R.W. (Geological Survey, Reston, VA (United States))

    1993-03-01

    Recent mapping in southernmost Illinois and southeastern Missouri has revealed numerous faults that displace Cretaceous and Tertiary strata. Units as young as the Pliocene-Pleistocene( ) Mounds Gravel are deformed; some faults possibly displace Quaternary sediments. The faults strike northeast, dip nearly vertically, and exhibit characteristics of dextral strike-slip. Pull-apart grabens occur along right-stepping fault strands, they contain chaotically jumbled blocks of Paleozoic, Cretaceous and Tertiary rocks downdropped as much as 800 m relative to wall rocks. Faults at the head of the Mississippi embayment probably originated during Cambrian rifting (Reelfoot rift) and have a long, complex history of reactivation under different stress fields. Some faults are on strike with faults in the New Madrid seismic zone. Kinematics of post-Cretaceous displacements fit the contemporary stress regime of ENE-WSW compression. Similar fault orientations and kinematics, as well as close proximity, suggest a close link between faulting at the head of the embayment and ongoing tectonism in the New Madrid seismic zone.

  10. MODELING AND SIMULATION OF HVAC FAULTS IN ENERGYPLUS

    E-Print Network [OSTI]

    Basarkar, Mangesh

    2013-01-01

    and simulated building energy performance, Norford et al. (faults on whole building performance – energy consumption,and simulated energy performance of buildings is that most

  11. Active Fault Controls At High-Temperature Geothermal Sites- Prospectin...

    Open Energy Info (EERE)

    the level of unrecognized active faults present in these areas. Analysis of low-sun-angle aerial photography acquired over the Needle Rocks, Astor Pass, Empire, and Lee...

  12. Fault-tolerant distributed transactions for partitioned OLTP databases

    E-Print Network [OSTI]

    Jones, Evan P. C. (Evan Philip Charles), 1981-

    2012-01-01

    This thesis presents Dtxn, a fault-tolerant distributed transaction system designed specifically for building online transaction processing (OLTP) databases. Databases have traditionally been designed as general purpose ...

  13. Arc-Fault Detector Algorithm Evaluation Method Utilizing Prerecorded...

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

    Electrical Code Article 690.11 requires photovoltaic systems on or penetrating a building to include a DC arc-fault protection device. In order to satisfy this...

  14. Checksum-Based Fault Tolerance for LU Factorization

    E-Print Network [OSTI]

    Davies, Teresa

    2014-01-01

    study of failures in high-performance computing systems. InFault tolerant high performance computing by a codingfor large-scale high- performance computing. In 2012

  15. Effects of Volcanism, Crustal Thickness, and Large Scale Faulting...

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

    Effects of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile Effects of Volcanism,...

  16. MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC COMPARTMENTALIZATION...

    Open Energy Info (EERE)

    LibraryAdd to library Conference Proceedings: MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC COMPARTMENTALIZATION WITHIN THE COSO GETHERMAL FIELD, CALIFORNIA Abstract High...

  17. PV Arc Fault Detector Challenges Due to Module Frequency Response...

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

    This poster does not contain any proprietary or confidential information. Introduction PV system arc faults have led to a number of rooftop fires which have caused significant...

  18. ContentsContents3399the normal distribution

    E-Print Network [OSTI]

    Vickers, James

    ContentsContents3399the normal distribution 1. The normal distribution 2. The normal approximation to the binomial distribution 3. Sums and differences of random variables Learning outcomes In a previous Workbook of a continuous random variables: the normal distribution. The probabilities of the normal distribution have

  19. Chapter 6 Continuous Distribution: The Normal Distribution

    E-Print Network [OSTI]

    Hong, Don

    Chapter 6 Continuous Distribution: The Normal Distribution 6.1 Introduction 6.2 Properties of a Normal Distribution 6.3 The Standard Normal Distribution 6.4 Applications of Normal Distribution 6.5 The Central Limit Theorem 6.6 The Normal Approximation to the Binomial Distribution Definition. A continuous

  20. cole normale suprieure de Lyon

    E-Print Network [OSTI]

    Vallette, Bruno

    école normale supérieure de Lyon ENS Lyon Electron quantum optics P. Degiovanni (ENS Lyon) C T. Martin(CPT Marseille) T. Jonckheere J. Rech C. Wahl #12;ENS Lyon A message from G. Fève Gwendal. #12;ENS Lyon ENS Lyon Outline · Introduction and motivation · Single electron coherence · Relaxation

  1. A Comparison of Fault Detection Methods For a Transcritical Refrigeration System 

    E-Print Network [OSTI]

    Janecke, Alex Karl

    2012-10-19

    pairings of four faults: over/undercharge, evaporator fouling, gas cooler fouling, and compressor valve leakage. This technique allows for low cost measurement and independent detection of individual faults even when multiple faults are present. Results...

  2. Neural Network-Based Classification of Single-Phase Distribution Transformer Fault Data 

    E-Print Network [OSTI]

    Zhang, Xujia

    2006-08-16

    The ultimate goal of this research is to develop an online, non-destructive, incipient fault detection system that is able to detect incipient faults in transformers and other electric equipment before the faults become ...

  3. Fluids migration and dynamics of a blocks-and-faults system

    E-Print Network [OSTI]

    1910-70-11

    Keywords: earthquake catalog, block model, fault, tectonic structure, fluid, fil- ...... nal vertical fault near upper vertices of adjacent internal blocks, and formation of ... acts near the right external vertical fault: fractures filled in with water emerge ...

  4. Evaluation of a Decoupling-Based Fault Detection and Diagnostic Technique - Part I: Field Emulation Evaluation 

    E-Print Network [OSTI]

    Li, H.; Braun, J.

    2006-01-01

    Existing methods addressing automated fault detection and diagnosis (FDD) for vapor compression air conditioning system have good performance for faults that occur individually, but they have difficulty in handling multiple-simultaneous faults...

  5. ALLIANCE: An Architecture for Fault Tolerant, Cooperative Control of Heterogeneous Mobile Robots

    E-Print Network [OSTI]

    Parker, Lynne E.

    ALLIANCE: An Architecture for Fault Tolerant, Cooperative Control of Heterogeneous Mobile Robots ALLIANCE, that utilizes adaptive action selection to achieve fault toler- ant cooperative control in robot demonstration. These experiments illustrate the ability of ALLIANCE to achieve adaptive, fault

  6. Electrical and thermal finite element modeling of arc faults in photovoltaic bypass diodes.

    SciTech Connect (OSTI)

    Bower, Ward Isaac; Quintana, Michael A.; Johnson, Jay

    2012-01-01

    Arc faults in photovoltaic (PV) modules have caused multiple rooftop fires. The arc generates a high-temperature plasma that ignites surrounding materials and subsequently spreads the fire to the building structure. While there are many possible locations in PV systems and PV modules where arcs could initiate, bypass diodes have been suspected of triggering arc faults in some modules. In order to understand the electrical and thermal phenomena associated with these events, a finite element model of a busbar and diode was created. Thermoelectrical simulations found Joule and internal diode heating from normal operation would not normally cause bypass diode or solder failures. However, if corrosion increased the contact resistance in the solder connection between the busbar and the diode leads, enough voltage potentially would be established to arc across micron-scale electrode gaps. Lastly, an analytical arc radiation model based on observed data was employed to predicted polymer ignition times. The model predicted polymer materials in the adjacent area of the diode and junction box ignite in less than 0.1 seconds.

  7. Fault Tolerant Arithmetic with Applications in Nanotechnology based Systems

    E-Print Network [OSTI]

    Rao, Wenjing

    Fault Tolerant Arithmetic with Applications in Nanotechnology based Systems Wenjing Rao UC San nanotechnologies have been displaying the Neg- ative Differential Resistance (NDR) characteristic, which makes them fault-tolerant arithmetic in NDR nanotechnologies. Specifically, we show how linear block codes can

  8. Automatic Fault Characterization via Abnormality-Enhanced Classification

    SciTech Connect (OSTI)

    Bronevetsky, G; Laguna, I; de Supinski, B R

    2010-12-20

    Enterprise and high-performance computing systems are growing extremely large and complex, employing hundreds to hundreds of thousands of processors and software/hardware stacks built by many people across many organizations. As the growing scale of these machines increases the frequency of faults, system complexity makes these faults difficult to detect and to diagnose. Current system management techniques, which focus primarily on efficient data access and query mechanisms, require system administrators to examine the behavior of various system services manually. Growing system complexity is making this manual process unmanageable: administrators require more effective management tools that can detect faults and help to identify their root causes. System administrators need timely notification when a fault is manifested that includes the type of fault, the time period in which it occurred and the processor on which it originated. Statistical modeling approaches can accurately characterize system behavior. However, the complex effects of system faults make these tools difficult to apply effectively. This paper investigates the application of classification and clustering algorithms to fault detection and characterization. We show experimentally that naively applying these methods achieves poor accuracy. Further, we design novel techniques that combine classification algorithms with information on the abnormality of application behavior to improve detection and characterization accuracy. Our experiments demonstrate that these techniques can detect and characterize faults with 65% accuracy, compared to just 5% accuracy for naive approaches.

  9. Fault current limiter with shield and adjacent cores

    DOE Patents [OSTI]

    Darmann, Francis Anthony; Moriconi, Franco; Hodge, Eoin Patrick

    2013-10-22

    In a fault current limiter (FCL) of a saturated core type having at least one coil wound around a high permeability material, a method of suppressing the time derivative of the fault current at the zero current point includes the following step: utilizing an electromagnetic screen or shield around the AC coil to suppress the time derivative current levels during zero current conditions.

  10. An Information Flow Model of Fault Detection Margaret C. Thompson ?

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    not be practical. Nonethe­ less, Relay provides insight into testing and fault de­ tection and suggests an approach and Computer Science Amherst, MA 01003 University of California Irvine, CA 92717 Abstract Relay is a model of how a fault causes a failure on execution of some test datum. This process begins with introduction

  11. Fault Tolerant Oxygen Control of a Diesel Engine Air System

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fault Tolerant Oxygen Control of a Diesel Engine Air System Rainer Nitsche Matthias Bitzer control problem of a Diesel engine air system having a jammed Exhaust Gas Recirculation (EGR) valve of the air system. Keywords: Fault tolerant control, Diesel engine, Air system, Model-based trajectory

  12. Symbolic identification for fault detection in aircraft gas turbine engines

    E-Print Network [OSTI]

    Ray, Asok

    Symbolic identification for fault detection in aircraft gas turbine engines S Chakraborty, S Sarkar and computationally inexpensive technique of component-level fault detection in aircraft gas-turbine engines identification, gas turbine engines, language-theoretic analysis 1 INTRODUCTION The propulsion system of modern

  13. On Distributed Fault-Tolerant Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Dong, Ming

    --Distributed event detection, fault tolerance, sensor fusion, energy-efficiency, wireless sensor networks. æ 1 to choose a proper neighborhood size n for a sensor node in fault correction such that the energy could to achieve better detection and better balance between detection accuracy and energy usage. Our work makes

  14. Common Trends in Software Fault and Failure Data

    E-Print Network [OSTI]

    Goseva-Popstojanova, Katerina

    Common Trends in Software Fault and Failure Data Maggie Hamill, Member, IEEE, and Katerina Goseva with the findings from related studies. The consistency of several main trends across software systems in this paper-Popstojanova, Senior Member, IEEE Abstract--The benefits of the analysis of software faults and failures have been

  15. Fault Reporting Processes in Business-Critical Systems

    E-Print Network [OSTI]

    and reporting7 Quantitative and qualitativeHazard analysis vs. fault report analysis - DAIM 6 Qualitative projects4 Quantitative, explorativeFault report study of four projects3 Qualitative, descriptive and Information Science (IDI) University of Science and Technology (NTNU) Trondheim, Norway PhD thesis

  16. Fault Detection and Diagnosis Method for VAV Terminal Units 

    E-Print Network [OSTI]

    Miyata, M.; Yoshida, H.; Asada, M.; Wang, F.; Hashiguchi, S.

    2004-01-01

    This paper proposes two fault detection and diagnosis methods for VAV units without a sensor of supply air volume, and the results of applying these methods to a real building are presented. One method detects faults by applying a statistical method...

  17. SHIELD: A Fault-Tolerant MPI for an Infiniband Cluster

    E-Print Network [OSTI]

    Yeom, Heon Young

    SHIELD: A Fault-Tolerant MPI for an Infiniband Cluster Hyuck Han, Hyungsoo Jung, Jai Wug Kim, a successful solution has yet to be delivered to commercial vendors. This paper presents SHIELD, a prac- tical and easily-deployable fault-tolerant MPI and management system of MPI for an Infiniband cluster. SHIELD

  18. Outlier Detection Rules for Fault Detection in Solar Photovoltaic Arrays

    E-Print Network [OSTI]

    Lehman, Brad

    . The models must be modified due to different PV capacity, solar cell technology, or installation locationOutlier Detection Rules for Fault Detection in Solar Photovoltaic Arrays Ye Zhao, Brad Lehman Abstract-- Solar photovoltaic (PV) arrays are unique power sources that may have uncleared fault current

  19. Original Article Multi-sensor information fusion for fault

    E-Print Network [OSTI]

    Ray, Asok

    The article addresses data-driven fault detection in commercial aircraft gas turbine engines in the framework is validated on the NASA C-MAPSS simulation test bed of aircraft gas turbine engines; both single is also addressed. Keywords Gas turbine engines, fault detection, information fusion Date received: 15 May

  20. Fault Detection, Identification and Accommodation for an Electro-hydraulic

    E-Print Network [OSTI]

    Yao, Bin

    in electro-hydraulic systems. It is well known fact that any realistic model of a hydraulic system suffersFault Detection, Identification and Accommodation for an Electro-hydraulic System: An Adaptive, such a scheme becomes a natural choice for designing robust fault detection algorithms for electro-hydraulic

  1. Multi-sensor Wireless System for Fault Detection in Induction Motors

    E-Print Network [OSTI]

    Tarkesh Esfahani, Ehsan

    2012-01-01

    2 Faults in Motors 2.1 Bearing Faultcombined faults in induction motors,” IEEE Transactions onV. Climente-Alarcon, “Induction motor diagnosis based on a

  2. Development of Integrated Meso/Microscale Traffic Simulation Software for Testing Fault Detection and Handling Algorithms in AHS: Final Report

    E-Print Network [OSTI]

    Horowitz, Roberto

    2003-01-01

    Traffic Simulation Software for Testing Fault Detection andTra?c Simulation Software for Testing Fault Detection and

  3. Application-Specific Fault Tolerance via Data Access Characterization

    SciTech Connect (OSTI)

    Ali, Nawab; Krishnamoorthy, Sriram; Govind, Niranjan; Kowalski, Karol; Sadayappan, Ponnuswamy

    2011-08-30

    Recent trends in semiconductor technology and supercomputer design predict an increasing probability of faults during an application's execution. Designing an application that is resilient to system failures requires careful evaluation of the impact of various approaches on preserving key application state. In this paper, we present our experiences in an ongoing effort to make a large computational chemistry application fault tolerant. We construct the data access signatures of key application modules to evaluate alternative fault tolerance approaches. We present the instrumentation methodology, characterization of the application modules, and evaluation of fault tolerance techniques using the information collected. The application signatures developed capture application characteristics not traditionally revealed by performance tools. We believe these can be used in the design and evaluation of runtimes beyond fault tolerance.

  4. A core-based assessment of the spatial relationship of small faults associated with a basement-controlled, large normal fault in the Hickory Sandstone 

    E-Print Network [OSTI]

    Graff, Mitchell C

    2006-10-30

    K N 0 1 mile 1 km0 UD D U D U U DD D U U C p gC r hC C C r hC p gC p gC p gC r hC r hC r hC K atemcy Study A r ea U K C r hC p gC Cretaceous Cambrian rocks above Hickory Sandstone Hickory Sandstone T own Mountain... 349 350 g f e d h c b a x z y g=5 f=6 e=14 d=17 h=? c=? b=? a=? x=7 z=11 y=? 1 cg 1 cg 2 cg 2 cg 1.5 fg 2 fg 4 fg 1 cg 1 cg 0.5 cg N35E 43NW N70E 82SE N50E 59SE N50E 52NW N35E 81SE N30E 53SE N45E 61SE N60E 76SE...

  5. Feb. 11, 2008 Advanced Fault Tolerance Solutions for High Performance Computing 1/47 Advanced Fault Tolerance Solutions

    E-Print Network [OSTI]

    Engelmann, Christian

    Feb. 11, 2008 Advanced Fault Tolerance Solutions for High Performance Computing 1/47 RAS RAS Advanced Fault Tolerance Solutions for High Performance Computing Christian Engelmann Oak Ridge National Solutions for High Performance Computing 2/47 · Nation's largest energy laboratory · Nation's largest

  6. Rupture Dynamics of Strike-Slip Faults with Stepovers: From Conceptually Simplified to Realistically Complex Fault Systems 

    E-Print Network [OSTI]

    Liu, Zaifeng

    2014-05-05

    . The coupling effect of those two effects has also been studied. The possible correlation between the slip gradient nearby the first fault end and the ability of the rupture to jump over the structure stepover in the strike-slip fault system has been verified...

  7. Generation of drugs coated iron nanoparticles through high energy ball milling

    SciTech Connect (OSTI)

    Radhika Devi, A.; Murty, B. S. [Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036 (India); Chelvane, J. A. [Defence Metallurgical Research Laboratory, Hyderabad 500058 (India); Prabhakar, P. K.; Padma Priya, P. V.; Doble, Mukesh [Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036 (India)

    2014-03-28

    The iron nanoparticles coated with oleic acid and drugs such as folic acid/Amoxicillin were synthesized by high energy ball milling and characterized by X-ray diffraction, Transmission electron microscope, zeta potential, dynamic light scattering, Fourier Transform Infra red (FT-IR) measurements, and thermo gravimetric analysis (TGA). FT-IR and TGA measurements show good adsorption of drugs on oleic acid coated nanoparticles. Magnetic measurements indicate that saturation magnetization is larger for amoxicillin coated particles compared to folic acid coated particles. The biocompatibility of the magnetic nanoparticles prepared was evaluated by in vitro cytotoxicity assay using L929 cells as model cells.

  8. Power Normal Distribution Debasis Kundu1

    E-Print Network [OSTI]

    Kundu, Debasis

    Power Normal Distribution Debasis Kundu1 and Rameshwar D. Gupta2 Abstract Recently Gupta and Gupta [10] proposed the power normal distribution for which normal distribution is a special case. The power normal distribution is a skewed distri- bution, whose support is the whole real line. Our main aim

  9. Cascaded target normal sheath acceleration

    SciTech Connect (OSTI)

    Wang, W. P.; Shen, B. F.; Zhang, X. M.; Wang, X. F.; Xu, J. C.; Zhao, X. Y.; Yu, Y. H.; Yi, L. Q.; Shi, Y.; Zhang, L. G.; Xu, T. J.; Xu, Z. Z.

    2013-11-15

    A cascaded target normal sheath acceleration (TNSA) scheme is proposed to simultaneously increase energy and improve energy spread of a laser-produced mono-energetic proton beam. An optimum condition that uses the maximum sheath field to accelerate the center of the proton beam is theoretically found and verified by two-dimensional particle-in-cell simulations. An initial 10 MeV proton beam is accelerated to 21 MeV with energy spread decreased from 5% to 2% under the optimum condition during the process of the cascaded TNSA. The scheme opens a way to scale proton energy lineally with laser energy.

  10. Locating hardware faults in a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J.; Megerian, Mark G.; Ratterman, Joseph D.; Smith, Brian E.

    2010-04-13

    Locating hardware faults in a parallel computer, including defining within a tree network of the parallel computer two or more sets of non-overlapping test levels of compute nodes of the network that together include all the data communications links of the network, each non-overlapping test level comprising two or more adjacent tiers of the tree; defining test cells within each non-overlapping test level, each test cell comprising a subtree of the tree including a subtree root compute node and all descendant compute nodes of the subtree root compute node within a non-overlapping test level; performing, separately on each set of non-overlapping test levels, an uplink test on all test cells in a set of non-overlapping test levels; and performing, separately from the uplink tests and separately on each set of non-overlapping test levels, a downlink test on all test cells in a set of non-overlapping test levels.

  11. Self field triggered superconducting fault current limiter

    DOE Patents [OSTI]

    Tekletsadik, Kasegn D. (Rexford, NY)

    2008-02-19

    A superconducting fault current limiter array with a plurality of superconductor elements arranged in a meanding array having an even number of supconductors parallel to each other and arranged in a plane that is parallel to an odd number of the plurality of superconductors, where the odd number of supconductors are parallel to each other and arranged in a plane that is parallel to the even number of the plurality of superconductors, when viewed from a top view. The even number of superconductors are coupled at the upper end to the upper end of the odd number of superconductors. A plurality of lower shunt coils each coupled to the lower end of each of the even number of superconductors and a plurality of upper shunt coils each coupled to the upper end of each of the odd number of superconductors so as to generate a generally orthoganal uniform magnetic field during quenching using only the magenetic field generated by the superconductors.

  12. Online Monitoring System for Performance Fault Detection

    SciTech Connect (OSTI)

    Gioiosa, Roberto; Kestor, Gokcen; Kerbyson, Darren J.

    2014-05-19

    To achieve the exaFLOPS performance within a contain power budget, next supercomputers will feature hundreds of millions of components operating at low- and near-threshold voltage. As the probability that at least one of these components fails during the execution of an application approaches certainty, it seems unrealistic to expect that any run of a scientific application will not experience some performance faults. We believe that there is need of a new generation of light-weight performance and debugging tools that can be used online even during production runs of parallel applications and that can identify performance anomalies during the application execution. In this work we propose the design and implementation of a monitoring system that continuously inspects the evolution of run

  13. Development of Characterization Technology for Fault Zone Hydrology

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Onishi, Tiemi; Gasperikova, Erika; Goto, Junichi; Tsuchi, Hiroyuki; Miwa, Tadashi; Ueta, Keiichi; Kiho, Kenzo; MIyakawa, Kimio

    2010-08-06

    Several deep trenches were cut, and a number of geophysical surveys were conducted across the Wildcat Fault in the hills east of Berkeley, California. The Wildcat Fault is believed to be a strike-slip fault and a member of the Hayward Fault System, with over 10 km of displacement. So far, three boreholes of ~;; 150m deep have been core-drilled and borehole geophysical logs were conducted. The rocks are extensively sheared and fractured; gouges were observed at several depths and a thick cataclasitic zone was also observed. While confirming some earlier, published conclusions from shallow observations about Wildcat, some unexpected findings were encountered. Preliminary analysis indicates that Wildcat near the field site consists of multiple faults. The hydraulic test data suggest the dual properties of the hydrologic structure of the fault zone. A fourth borehole is planned to penetrate the main fault believed to lie in-between the holes. The main philosophy behind our approach for the hydrologic characterization of such a complex fractured system is to let the system take its own average and monitor a long term behavior instead of collecting a multitude of data at small length and time scales, or at a discrete fracture scale and to ?up-scale,? which is extremely tenuous.

  14. Hydro-ball in-core instrumentation system and method of operation

    DOE Patents [OSTI]

    Tower, Stephen N. (Washington Township, Westmoreland County, PA); Veronesi, Luciano (O'Hara Township, Allegheny County, PA); Braun, Howard E. (Pittsburgh, PA)

    1990-01-01

    A hydro-ball in-core instrumentation system employs detector strings each comprising a wire having radiation sensitive balls affixed diametrically at spaced positions therealong and opposite tip ends of which are transportable by fluid drag through interior passageways. In the passageways primary coolant is caused to flow selectively in first and second opposite directions for transporting the detector strings from stored positions in an exterior chamber to inserted positions within the instrumentation thimbles of the fuel rod assemblies of a pressure vessel, and for return. The coolant pressure within the detector passageways is the same as that within the vessel; face contact, disconnectable joints between sections of the interior passageways within the vessel facilitate assembly and disassembly of the vessel for refueling and routine maintenance operations. The detector strings may pass through a very short bend radius thereby minimizing space requirements for the connections of the instrumentation system to the vessel and concomitantly the vessel containment structure. Improved radiation mapping and a significant reduction in potential exposure of personnel to radiation are provided. Both top head and bottom head penetration embodiments are disclosed.

  15. Visualization of stacking faults in fcc crystals in plastic deformations

    E-Print Network [OSTI]

    Takeshi Kawasaki; Akira Onuki

    2011-11-27

    Using molecular dynamics simulation, we investigate the dynamics of stacking faults in fcc crystals in uniaxial stretching in a Lennard-Jones binary mixture composed of 4096 particles in three dimensions. We visualize stacking faults using a disorder variable $D_j(t)$ for each particle $j$ constructed from local bond order parameters based on spherical harmonics (Steinhardt order parameters). Also introducing a method of bond breakage, we examine how stacking faults are formed and removed by collective particle motions. These processes are relevant in plasticity of fcc crystals.

  16. Physical conditions of the ball lightning ejection caused by interaction of electrical discharge with metal and polymer

    E-Print Network [OSTI]

    Emelin, S E; Skvortsov, G E; Bychkov, V L

    2001-01-01

    Physical conditions of formation of the ball lightning with high energy density considered as condensate of heavily excited atoms have been studied. In our approach the ball lightning formation processes is considered as a form of energy-structure self-organi-zation on the base of metastable substance and interchange. We propose different variants of the experimental method to create autonomous formation on the base of the closed capillary discharge allowing to obtain the objects with the life time up to 2s which burn through the foil, explode and can penetrate through the polymer wall without destroying it.

  17. Static Fault Attack on Hardware DES Registers Philippe Loubet-Moundi, Francis Olivier, and David Vigilant

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Static Fault Attack on Hardware DES Registers Philippe Loubet-Moundi, Francis Olivier, and David deals with static faults which lie in between. A static fault modifies a value loaded in a volatile], quickly became a privileged target for DFA. #12;2 Static Fault Attacks on Hardware DES Registers Indeed

  18. Can Fault Prediction Models and Metrics be Used for Vulnerability Prediction? Yonghee Shin and Laurie Williams

    E-Print Network [OSTI]

    Young, R. Michael

    are built with traditional metrics of complexity, code churn, and fault history. We have performed to the code [17]. Hence, complexity metrics and code churn metrics have been used for fault prediction [5, 17 fault prediction metrics ­ complexity, code churn, and fault history metrics for vulnerability

  19. Seismic behaviour of the Dead Sea fault along Araba valley, Y. Klinger,1,

    E-Print Network [OSTI]

    Avouac, Jean-Philippe

    rue Lafayette, F-75480 Paris cedex 10, France 4 Department of Geology, University of Jordan, Amman-lateral strike-slip fault. South of the Dead Sea basin, the Wadi Araba fault extends over 160 km to the Gulf the fault except around the Dead Sea and Gulf of Aqaba, where the fault splays into complex pull-apart basin

  20. Trans. Nonferrous Met. Soc. China 23(2013) 1356-1366 Effects of ball milling time on porous Ti-3Ag alloy and

    E-Print Network [OSTI]

    Zheng, Yufeng

    2013-01-01

    . A special powder metallurgy method was used to prepare the porous Ti-3Ag alloys [25]. The ball milling time time during powder metallurgy on porous Ti-3Ag alloys and its apatite-inducing ability in a modified alloys with 3% Ag were fabricated by powder metallurgy process with different ball milling Foundation

  1. Dynamic leakage of faults during differential depletion: Theory, models, and examples from the Niger delta

    SciTech Connect (OSTI)

    Watts, N.L.; Kaars Sijpestein, C.H.; Osai, L.N.; Okoli, O.C. (Shell Petroleum Development Co. of Nigeria, Lagos (Nigeria))

    1991-08-01

    Previous studies of fault sealing have addressed possible fault leakage during secondary migration due to the effects of increased hydrocarbon-water capillary pressure, fracturing, or small-scale incremental fault movements. Of equal importance to production geologists is the failure and leakage of faults during field development due to differential depletion of adjacent fault blocks. This paper examines the unique problems associated with this dynamic leakage of faults. It is theoretically shown that the fault sealing mechanism, and the extent of the seal, directly influences the failure process which in turn results in a variety of favorable and unfavorable effects on field development. The qualitative models give considerable insight into such aspects as oil-column expansion and resaturation losses, interfault block aquifer support (with important implications to material balance calculations), possible leakage or spillage of oil across faults, and potential fault failure during (re)injection projects. Examples of dynamic fault leakage are presented from selected fields of the Niger delta.

  2. An information model for inter-organizational fault Patricia Marcu

    E-Print Network [OSTI]

    in the IT Infrastructure Library (ITIL) [2] and related frameworks in the area of IT service management (ITSM). But since ITIL and the related ITSM frameworks do not consider specific aspects of inter- organizational (fault

  3. Controls on Fault-Hosted Fluid Flow: Preliminary Results from...

    Open Energy Info (EERE)

    Controls on Fault-Hosted Fluid Flow: Preliminary Results from the Coso Geothermal Field, CA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  4. Robust model-based fault diagnosis for chemical process systems 

    E-Print Network [OSTI]

    Rajaraman, Srinivasan

    2006-08-16

    Fault detection and diagnosis have gained central importance in the chemical process industries over the past decade. This is due to several reasons, one of them being that copious amount of data is available from a large ...

  5. Thermal Waters Along The Konocti Bay Fault Zone, Lake County...

    Open Energy Info (EERE)

    Thermal Waters Along The Konocti Bay Fault Zone, Lake County, California- A Re-Evaluation Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

  6. Microgrid Fault Protection Based on Symmetrical and Differential Current Components

    E-Print Network [OSTI]

    Microgrid Fault Protection Based on Symmetrical and Differential Current Components Prepared.........................................................................................8 2. AEP CERTS MICROGRID .........................................................................9 ........................................................................67 #12;3 Index of Figures Figure 1: Schematic representation of the AEP CERTS microgrid

  7. Compatible and Cost-Effective Fault Diagnostic Solutions for...

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

    Compatible and Cost-Effective Fault Diagnostic Solutions for Air Handling Unit-Variable Air Volume and Air Handling Unit-Constant Air Volume Systems - 2014 BTO Peer Review...

  8. COMPLETE FAULT ANALYSIS FOR LONG TRANSMISSION LINE USING

    E-Print Network [OSTI]

    sys- tem based approach is described in (Girgis and Johns, 1996) and a phasor measurement unit (PMU Measurement Unit (PMU) are further developed. Previous efforts were aimed at implementing accu- rate fault

  9. MODELING AND SIMULATION OF HVAC FAULTS IN ENERGYPLUS

    E-Print Network [OSTI]

    Basarkar, Mangesh

    2013-01-01

    http://www.eia.doe.gov/emeu/cbecs/ EnergyPlus. 2011, http://of HVAC Results in EnergyPlus Mangesh Basarkar, XiufengOF HVAC FAULTS IN ENERGYPLUS Mangesh Basarkar, Xiufeng Pang,

  10. A Low Overhead Fault Tolerant Coherence Protocol for CMP Architectures

    E-Print Network [OSTI]

    Acacio, Manuel

    A Low Overhead Fault Tolerant Coherence Protocol for CMP Architectures Ricardo Fern Murcia SPAIN {r.fernandez,jmgarcia,meacacio}@ditec.um.es Jos´e Duato Dpto. Inform´atica de Sistemas y

  11. Motion and evolution of the Chaochou Fault, Southern Taiwan 

    E-Print Network [OSTI]

    Hassler, Lauren E.

    2005-11-01

    The Chaochou Fault (CCF) is both an important lithologic boundary and a significant topographic feature in the Taiwan orogenic belt. It is the geologic boundary between the Slate Belt to the east, and the Western Foothills to the west. Although...

  12. Recent earthquake sequences at Coso: Evidence for conjugate faulting...

    Open Energy Info (EERE)

    Recent earthquake sequences at Coso: Evidence for conjugate faulting and stress loading near a geothermal field Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  13. Fault Block Kinematics at a Releasing Stepover of the Eastern...

    Open Energy Info (EERE)

    Nascent Metamorphic Core Complex Citation Christopher J. Pluhar,Robert S. Coe,Jonathan C. Lewis,Francis C. Monastero,Jonathan M.G. Glen. 2006. Fault Block Kinematics at a Releasing...

  14. Non-intrusive fault detection in reciprocating compressors

    E-Print Network [OSTI]

    Schantz, Christopher James

    2011-01-01

    This thesis presents a set of techniques for non-intrusive sensing and fault detection in reciprocating compressors driven by induction motors. The procedures developed here are "non-intrusive" because they rely only on ...

  15. Fusing strategies for the dual-voltage fault

    E-Print Network [OSTI]

    Shrivastava, Rupam, 1981-

    2005-01-01

    This thesis focuses on the 42V - 14V fault in a dual voltage system and discusses the possibility of effective fusing. A simple model for the system had been created from technical documentation. Based on the model and the ...

  16. Turing's normal numbers: towards randomness Veronica Becher

    E-Print Network [OSTI]

    presumably in 1938 Alan Turing gave an algorithm that produces real numbers normal to every integer base- putable normal numbers, and this result should be attributed to Alan Turing. His manuscript entitled "A

  17. Fault-Tolerant Quantum Computation with Higher-Dimensional Systems

    E-Print Network [OSTI]

    Daniel Gottesman

    1998-02-02

    Instead of a quantum computer where the fundamental units are 2-dimensional qubits, we can consider a quantum computer made up of d-dimensional systems. There is a straightforward generalization of the class of stabilizer codes to d-dimensional systems, and I will discuss the theory of fault-tolerant computation using such codes. I prove that universal fault-tolerant computation is possible with any higher-dimensional stabilizer code for prime d.

  18. Microstructures and Rheology of a Limestone-Shale Thrust Fault 

    E-Print Network [OSTI]

    Wells, Rachel Kristen

    2011-02-22

    AND RHEOLOGY OF A LIMESTONE-SHALE THRUST FAULT A Thesis by RACHEL KRISTEN WELLS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December... 2010 Major Subject: Geology MICROSTRUCTURES AND RHEOLOGY OF A LIMESTONE-SHALE THRUST FAULT A Thesis by RACHEL KRISTEN WELLS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  19. Fault Detection, Diagnostics and Optimmization using BIG Data Analytics 

    E-Print Network [OSTI]

    Bonifay, X.

    2013-01-01

    buildings. Reduce footprint. ESL-IC-13-10-58a Proceedings of the 13th International Conference for Enhanced Building Operations, Montreal, Quebec, October 8-11, 2013 About IFCS ? Headquartered in Quebec, CANADA ? Founded in 1993 ? Y-Y Growth..., Equipment longevity, Occupant comfort ESL-IC-13-10-58a Proceedings of the 13th International Conference for Enhanced Building Operations, Montreal, Quebec, October 8-11, 2013 Fault Detection and Diagnostics - FDD Fault detection and diagnostics (FDD...

  20. Neural net application to transmission line fault detection and classification 

    E-Print Network [OSTI]

    Rikalo, Igor

    1994-01-01

    . So far, several NN implementations for various fault diagnosis problems have been reported in the literature. A number of papers describing NN applications in pov er systems categorized in appropriate groups can be found in [19, 20]. 1. 3. Thesis... important issue for stable and reliable operation of pov;er systems. The main target of the fault analysis are circuit breaker and protection relay operations. The task of the analysis is to reach a conclusion about the current state of the electrical...

  1. A Compiler for Fault-Tolerant High Level Quantum Circuits

    E-Print Network [OSTI]

    Alexandru Paler; Ilia Polian; Kae Nemoto; Simon J. Devitt

    2015-09-07

    Fault-tolerant quantum error correction is an absolute necessity for any quantum architecture destined to tackle interesting, large-scale quantum algorithms. The theoretical formalism of quantum error correction codes, fault-tolerant circuit constructions, gate decompositions and relevant optimisations have been well founded for nearly two decades. However, at this point we still do not have a reliable compiler to adapt a high level circuit description to a fully fault-tolerant, error corrected description. There are many technical hurdles to this, including dynamic circuit constructions that occur due to teleportation protocols necessary to achieve fault-tolerance with commonly used error correction codes. We combine multiple results to develop a package that takes any high level quantum circuit consisting of CNOT, Toffoli, Controlled-$\\sqrt{X}$ and arbitrary single qubit rotations and converts it to a equivalent quantum circuit employing ancillary protocols needed for fault-tolerant error correction. We call this representation the (I)initialisation, (C)NOT, (M)measurement representation (ICM) and consists of an initialisation layer of qubits into one of four distinct states, a massive array of CNOT operations that implement the relevant algorithmic decompositions and fault-tolerant ancillary protocols and a series of time ordered $X$- and $Z$-basis measurements. Our package will output either a standard circuit description or a canonical geometric structure that represents its implementation for topological quantum codes that can be further optimised and implemented on actual quantum hardware.

  2. Whitey Swagelok SCHe Ball Valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-09-15

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function betwen SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  3. Whitey Swagelok SCHe Ball Valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    VAN KATWIJK, C.

    2000-06-21

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function between SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  4. Whitey Swagelok SCHe ball valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-09-03

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function betwen SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  5. Crystal ball 2011mbt_245 109..137 In this feature, leading researchers in the field of microbial

    E-Print Network [OSTI]

    Angenent, Lars T.

    energy to be harvested by the microbial community catalysing the process (Hanselmann, 1991Crystal ball ­ 2011mbt_245 109..137 In this feature, leading researchers in the field of microbial). In theory, the bio- processing of organic substrates in an open microbial community-based process

  6. X-ray photoelectron emission spectromicroscopic analysis of arborescent lycopsid cell wall composition and Carboniferous coal ball preservation

    E-Print Network [OSTI]

    Boyce, C. Kevin

    composition and Carboniferous coal ball preservation C. Kevin Boyce a, , Mike Abrecht b , Dong Zhou b , P that were canopy dominants of many Pennsylvanian coal swamp forests. Its periderm or bark--the single greatest biomass contributor to many Late Paleozoic coals--is found to have a greater aliphatic content

  7. Off-fault Damage Associated with a Localized Bend in the North Branch San Gabriel Fault, California 

    E-Print Network [OSTI]

    Becker, Andrew 1987-

    2012-08-15

    , such as bends and steps, are thought to affect earthquake rupture propagation and energy radiation, but the effects are not completely understood. We hypothesize that the rate of accumulation of new damage decreases as fault maturity increases, and damage...

  8. Non-stationary dynamics in the bouncing ball: A wavelet perspective

    SciTech Connect (OSTI)

    Behera, Abhinna K., E-mail: abhinna@iiserkol.ac.in; Panigrahi, Prasanta K., E-mail: pprasanta@iiserkol.ac.in [Department of Physical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246 (India); Sekar Iyengar, A. N., E-mail: ansekar.iyengar@saha.ac.in [Plasma Physics Division, Saha Institute of Nuclear Physics (SINP), Sector 1, Block-AF, Bidhannagar, Kolkata 700064 (India)

    2014-12-01

    The non-stationary dynamics of a bouncing ball, comprising both periodic as well as chaotic behavior, is studied through wavelet transform. The multi-scale characterization of the time series displays clear signatures of self-similarity, complex scaling behavior, and periodicity. Self-similar behavior is quantified by the generalized Hurst exponent, obtained through both wavelet based multi-fractal detrended fluctuation analysis and Fourier methods. The scale dependent variable window size of the wavelets aptly captures both the transients and non-stationary periodic behavior, including the phase synchronization of different modes. The optimal time-frequency localization of the continuous Morlet wavelet is found to delineate the scales corresponding to neutral turbulence, viscous dissipation regions, and different time varying periodic modulations.

  9. Comments to support the Dipole Dynamical Model (DDM) of Ball Lightning (BL)

    E-Print Network [OSTI]

    V. N. Soshnikov

    2015-08-13

    I present estimates to justify previously proposed by me heuristic Dipole Dynamical Model (DDM) of Ball Lightning (BL). The movement and energy supplying to the dipole BL are due to the atmospheric electric field. Crucial for the detailed analysis of BL is using the new relation of balance of the force of atmospheric electric field (per unit mass of electron cloud) and dipole forces electrons-ions within BL dipole (per unit mass of BL) as the first necessary condition for the existance of BL as an integer. This model is unique because, unlike existing static models, fundamental condition for the existence of Ball Lightning is its forward motion. The virial theorem limiting BL power does not apply to BL which is not closed system like the Sun or Galaxy systems and is strongly dependent part of the infinitely extended in time and space large system. Stability of BL is due to two free parameters with the fundamental role of thermodynamic non-equilibrium, ionization, recombination and translational movement with energy loss by radiation and also excess volumetric positive charge. Stability of BL is not related to the presence of any external shells. Polarization degree of BL plasma is characterized by polarizability factor {\\gamma}. An example is presented of calculating the stability of option BL. There is also a possible connection of stability BL with statistical distributions of the atmospheric electric field in time and space. Destruction of BL can also occur due to arising kinematical instability at its accelerating (or decelerating) movement. Maximal energy density in BL DDM does not exceed the value Espec<(10(8) - 10(9)) J/m(3). Resulting indefinitely long BL lifetime is also discussed. BL has no outer shell and no any inner rigid microstructure elements.

  10. Comments to support the Dipole Dynamical Model (DDM) of Ball Lightning (BL)

    E-Print Network [OSTI]

    V. N. Soshnikov

    2015-10-03

    I present estimates to justify previously proposed by me heuristic Dipole Dynamical Model (DDM) of Ball Lightning (BL). The movement and energy supplying to the dipole BL are due to the atmospheric electric field. Crucial for the detailed analysis of BL is using the new relation of balance of the force of atmospheric electric field (per unit mass of electron cloud) and dipole forces electrons-ions within BL dipole (per unit mass of BL) as the first necessary condition for the existance of BL as an integer. This model is unique because, unlike existing static models, fundamental condition for the existence of Ball Lightning is its forward motion. The virial theorem limiting BL power does not apply to BL which is not closed system like the Sun or Galaxy systems and is strongly dependent part of the infinitely extended in time and space large system. Stability of BL is due to two free parameters with the fundamental role of thermodynamic non-equilibrium, ionization, recombination and translational movement with energy loss by radiation and also excess volumetric positive charge. Stability of BL is not related to the presence of any external shells. Polarization degree of BL plasma is characterized by polarizability factor {\\gamma}. An example is presented of calculating the stability of an option of BL. There is also a possible connection of stability BL with statistical distributions of the atmospheric electric field in time and space. Destruction of BL can also occur due to arising kinematical instability at its accelerating (or decelerating) movement. Maximal energy density in BL DDM does not exceed the value Espec<(10(8) - 10(9)) J/m(3) decreasing with the growing BL radius. Resulting indefinitely long BL lifetime is also discussed. BL has no outer shell and no any inner rigid or elastic microstructure elements.

  11. Assessment study of superconducting fault-current limiters operating at 77K

    SciTech Connect (OSTI)

    Giese, R.F. ); Runde, M. )

    1992-01-01

    The possible impact of nitrogen-cooled superconductors on the design and cost of superconducting fault-current limiters is assessed by considering the technical specifications such devices must meet and by comparing material properties of 77-K and 4-K superconductors. The main advantage of operating superconductors at 77 K is that the refrigeration operating cost is reduced by a factor of up to 25, and the refrigeration capital cost is reduced by a factor of up to 10. The heat capacity of 77 K is several orders of magnitude larger than at 4 K. This phenomenon increases conductor stability against flux jumps but makes switching from the superconducting to normal state slow and difficult. Consequently, a high critical current density, probably at least 10{sup 5} A/cm{sup 2}, is required.

  12. Assessment study of superconducting fault-current limiters operating at 77K

    SciTech Connect (OSTI)

    Giese, R.F.; Runde, M.

    1992-07-01

    The possible impact of nitrogen-cooled superconductors on the design and cost of superconducting fault-current limiters is assessed by considering the technical specifications such devices must meet and by comparing material properties of 77-K and 4-K superconductors. The main advantage of operating superconductors at 77 K is that the refrigeration operating cost is reduced by a factor of up to 25, and the refrigeration capital cost is reduced by a factor of up to 10. The heat capacity of 77 K is several orders of magnitude larger than at 4 K. This phenomenon increases conductor stability against flux jumps but makes switching from the superconducting to normal state slow and difficult. Consequently, a high critical current density, probably at least 10{sup 5} A/cm{sup 2}, is required.

  13. Imaging the source regions of normal faulting sequences induced by the 2011 M9.0 Tohoku-Oki earthquake

    E-Print Network [OSTI]

    Kato, Aitaro

    , Association for the Development of Earthquake Prediction, Mizunami, Japan. 4) Graduate School of Science-Oki earthquake Aitaro Kato1) , Toshihiro Igarashi1) , Kazushige Obara1) , Shinichi Sakai1) , Tetsuya Takeda2) Earthquake Research Institute, University of Tokyo, Tokyo, Japan. 2) National Research Institute for Earth

  14. Fault Oblivious eXascale Whitepaper

    SciTech Connect (OSTI)

    Minnich, Ronald G.; Janssen, Curtis L.; Krishnamoorthy, Sriram; Marquez, Andres; Gokhale, Maya; Sadayappan, Ponnuswamy; Van Hensbergen, Eric; McKie, Jim; Appavoo, Jonathan

    2011-06-01

    In this paper we present a software system which supports dynamic, irregular, adaptive applications. Data objects are created and structured in a hierarchical manner, with replication as needed to provide a high degree of redundancy. The data objects can contain data, code, tasks (work descriptors with references to data, code, and other tasks) and higher level structures such as work queues. The higher level structures benefit from the properties of the data objects: redundant storage to support resiliency in the face of hardware failure; hierarchical structure to optimize use of the HPC system; and a presence of object names, available in the per-user file system name space, which allows any application, not just specially written HPC applications, to make use of the data even while it is on the HPC system. Our use of hierarchy will make the runtime scalable to very large systems. Our use of redundancy will allow programs to be written in a fault-oblivious manner, eliminating the need for system-level checkpointing. Putting data object names into the file system name space allows for interactive use of the system by users. With this approach, we will be able to finally leave the batch era behind, a half-century after the invention of time sharing. We will be able to stop bounding program through- put by the checkpoint interval. Application data will be accessible at any time, not hidden behind opaque 128-bit pointers or MPI ranks, but given a name that is visible everywhere. Programmers can stop laying out data, and thinking about where the data is, and the code is, and the nodes are, and stick with the problem of what the application is supposed to be doing. This work, if it succeeds, will enable scientific computing to scale to the next generation of machines.

  15. Numerical modeling of gas migration into and through faulted sand reservoirs in Pabst Field (Main Pass East Block 259), northern Gulf of Mexico 

    E-Print Network [OSTI]

    Li, Yuqian

    2006-08-16

    allow gas communication among the sands. Meanwhile, three fault families break up the three sands into numerous compartments. A primary fault and large synthetic and antithetic faults act as gas migration pathways: the synthetic and antithetic faults...

  16. An introduction to Fault-tolerant Quantum Computing

    E-Print Network [OSTI]

    Alexandru Paler; Simon J. Devitt

    2015-08-15

    In this paper we provide a basic introduction of the core ideas and theories surrounding fault-tolerant quantum computation. These concepts underly the theoretical framework of large-scale quantum computation and communications and are the driving force for many recent experimental efforts to construct small to medium sized arrays of controllable quantum bits. We examine the basic principals of redundant quantum encoding, required to protect quantum bits from errors generated from both imprecise control and environmental interactions and then examine the principals of fault-tolerance from largely a classical framework. As quantum fault-tolerance essentially is avoiding the uncontrollable cascade of errors caused by the interaction of quantum-bits, these concepts can be directly mapped to quantum information.

  17. Impact of Installation Faults on Heat Pump Performance

    SciTech Connect (OSTI)

    Hourahan, Mr. Glenn [Air Conditioning Contractors of America, Arlington, VA; Baxter, Van D [ORNL

    2015-01-01

    Numerous studies and surveys indicate that typically-installed HVAC equipment operate inefficiently and waste considerable energy due to varied installation errors (faults) such as improper refrigerant charge, incorrect airflow, oversized equipment, and leaky ducts. This article summarizes the results of a large United States (U.S.) experimental/analytical study (U.S. contribution to IEA HPP Annex 36) of the impact that different faults have on the performance of an air-source heat pump (ASHP) in a typical U.S. single-family house. It combines building effects, equipment effects, and climate effects in an evaluation of the faults impact on seasonal energy consumption through simulations of the house/ASHP pump system.

  18. Multi-fault Tolerance for Cartesian Data Distributions

    SciTech Connect (OSTI)

    Ali, Nawab; Krishnamoorthy, Sriram; Halappanavar, Mahantesh; Daily, Jeffrey A.

    2013-06-01

    Faults are expected to play an increasingly important role in how algorithms and applications are designed to run on future extreme-scale sys- tems. Algorithm-based fault tolerance (ABFT) is a promising approach that involves modications to the algorithm to recover from faults with lower over- heads than replicated storage and a signicant reduction in lost work compared to checkpoint-restart techniques. Fault-tolerant linear algebra (FTLA) algo- rithms employ additional processors that store parities along the dimensions of a matrix to tolerate multiple, simultaneous faults. Existing approaches as- sume regular data distributions (blocked or block-cyclic) with the failures of each data block being independent. To match the characteristics of failures on parallel computers, we extend these approaches to mapping parity blocks in several important ways. First, we handle parity computation for generalized Cartesian data distributions with each processor holding arbitrary subsets of blocks in a Cartesian-distributed array. Second, techniques to handle corre- lated failures, i.e., multiple processors that can be expected to fail together, are presented. Third, we handle the colocation of parity blocks with the data blocks and do not require them to be on additional processors. Several al- ternative approaches, based on graph matching, are presented that attempt to balance the memory overhead on processors while guaranteeing the same fault tolerance properties as existing approaches that assume independent fail- ures on regular blocked data distributions. The evaluation of these algorithms demonstrates that the additional desirable properties are provided by the pro- posed approach with minimal overhead.

  19. Application of Generalized Quantum Hydrodynamics In the Theory of Quantum Soliton's Evolution, Atom Structure and Lightning Ball

    E-Print Network [OSTI]

    Alexeev, Boris V

    2008-01-01

    Quantum solitons are discovered with the help of generalized quantum hydrodynamics (GQH). The solitons have the character of the stable quantum objects in the self consistent electric field. These effects can be considered as explanation of the existence of lightning balls. The delivered theory demonstrates the great possibilities of the generalized quantum hydrodynamics in investigation of the quantum solitons. The paper can be considered also as comments and prolongation of the materials published in the known author`s monograph (Boris V. Alexeev, Generalized Boltzmann Physical Kinetics. Elsevier. 2004). The theory leads to solitons as typical formations in the generalized quantum hydrodynamics. Key words: Foundations of the theory of transport processes; The theory of solitons; Generalized hydrodynamic equations; Foundations of quantum mechanics; The theory of lightning balls. PACS: 67.55.Fa, 67.55.Hc

  20. Interseismic strain accumulation and the earthquake potential on the southern San Andreas fault system

    E-Print Network [OSTI]

    Fialko, Y

    2006-01-01

    lat- ter would imply subsidence to the east of the fault.indicate uplift, rather subsidence, to the east of the faultlikely involves ground subsidence to the west of the fault.

  1. A Survey of NASA and Military Standards on Fault Tolerance and Reliability Applied to Robotics

    E-Print Network [OSTI]

    Rice University - Center for Cooperative Autonomous Robots for Hazardous Environments

    A Survey of NASA and Military Standards on Fault Tolerance and Reliability Applied to Robotics of relevant Military and NASA standards for reliability and fault toler­ ance is included. 1 Introduction

  2. The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling

    E-Print Network [OSTI]

    Gregg, Patricia Michelle Marie

    2008-01-01

    Segmentation and crustal accretion at oceanic transform fault systems are investigated through a combination of geophysical data analysis and geodynamical and geochemical modeling. Chapter 1 examines the effect of fault ...

  3. Simulation and Validation of Vapor Compression System Faults and Start-up/Shut-down Transients 

    E-Print Network [OSTI]

    Ayyagari, Balakrishna

    2012-10-19

    as vapor compression system faults. This thesis addresses these concerns and enhances the existing modeling library to capture the transients related to the above mentioned conditions. In this thesis, the various faults occurring in a vapor compressor...

  4. Observations on Faults and Associated Permeability Structures in Hydrogeologic Units at the Nevada Test Site

    SciTech Connect (OSTI)

    Prothro, Lance B.; Drellack, Sigmund L.; Haugstad, Dawn N.; Huckins-Gang, Heather E.; Townsend, Margaret J.

    2009-03-30

    Observational data on Nevada Test Site (NTS) faults were gathered from a variety of sources, including surface and tunnel exposures, core samples, geophysical logs, and down-hole cameras. These data show that NTS fault characteristics and fault zone permeability structures are similar to those of faults studied in other regions. Faults at the NTS form complex and heterogeneous fault zones with flow properties that vary in both space and time. Flow property variability within fault zones can be broken down into four major components that allow for the development of a simplified, first approximation model of NTS fault zones. This conceptual model can be used as a general guide during development and evaluation of groundwater flow and contaminate transport models at the NTS.

  5. Comparative analysis of electrical and mechanical fault signatures in induction motors 

    E-Print Network [OSTI]

    Venugopal, Arvind Madabushi

    2005-02-17

    This research deals with the comparison of fault signatures in induction motors. The primary objective is to study and analyze the similarities in the electrical and mechanical fault signatures, and to determine the ...

  6. Fault Current Issues for Market Driven Power Systems with Distributed Generation

    E-Print Network [OSTI]

    1 Fault Current Issues for Market Driven Power Systems with Distributed Generation Natthaphob of installing distributed generation (DG) to electric power systems. The proliferation of new generators creates Terms--Distributed / dispersed generation, power distri- bution, power system protection, fault

  7. ADECENTRALIZED APPROACH TOWARDS AUTONOMOUS FAULT DETECTION IN WIRELESS STRUCTURAL HEALTH MONITORING SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ADECENTRALIZED APPROACH TOWARDS AUTONOMOUS FAULT DETECTION IN WIRELESS STRUCTURAL HEALTH MONITORING structural health monitoring (SHM) systems may reduce the monitoring quality and, if remaining undetected : Autonomous fault detection, structural health monitoring, wireless sensor networks, smart sensors, analytical

  8. The structure and evolution of small-displacement strike-slip faults in porous sandstone 

    E-Print Network [OSTI]

    Schafer, Kirk Wyatt

    2002-01-01

    The early-evolution of fault structure is inferred from analysis of detailed maps of portions of strike-slip faults with uniform displacements ranging from mm to decimeter in porous quartzose sandstone. Emphasis is on ...

  9. Fault tree analysis of commonly occurring medication errors and methods to reduce them 

    E-Print Network [OSTI]

    Cherian, Sandhya Mary

    1994-01-01

    -depth analysis of over two hundred actual medication error incidents. These errors were then classified according to type, in an attempt at deriving a generalized fault tree for the medication delivery system that contributed to errors. This generalized fault...

  10. HEAT AND MASS TRANSFER IN A FAULT-CONTROLLED GEOTHERMAL RESERVOIR CHARGED AT CONSTANT PRESSURE

    E-Print Network [OSTI]

    Goyal, K.P.

    2013-01-01

    from the natural geothermal gradient ~T /L A quantitativegradients in a fault-controlled liquid dominated geothermalgradients in the fault-aquifer system. DEVELOPMENT OF CONCEPTUAL MODEL Studies of liquid-dominated geothermal

  11. Initiation propagation and termination of elastodynamic ruptures associated with segmentation of faults and shaking

    E-Print Network [OSTI]

    Shaw, Bruce E.

    Initiation propagation and termination of elastodynamic ruptures associated with segmentation the initiation, propagation, and termination of ruptures and their relationship to fault geometry and shaking of terminations near fault ends; and persistent propagation directivity effects. Taking advantage of long

  12. Dynamical System Analysis and Forecasting of Deformation Produced by an Earthquake Fault

    E-Print Network [OSTI]

    Ben-Zion, Yehuda

    is characterized by a set of parameters that describe the dynamics, rheology, property disorder, and fault geometry of an earthquake fault is not feasible at present because the governing physical laws, geometric and structural

  13. Finite element analysis of elastic interaction of two en echelon overlapping faults 

    E-Print Network [OSTI]

    Leem, Junghun

    1995-01-01

    on the faults. Attention is focuses on the role of variable fault spacing and overlap for constant far-field compressive principal stresses. The linear elastic, isotropic, plane strain, finite element analyses are obtained. The basic modeling approach...

  14. Microfracture fabric of the Punchbowl fault zone, San Andreas System, California 

    E-Print Network [OSTI]

    Wilson, Jennifer Elizabeth

    1999-01-01

    Andreas system. Open, healed, and sealed microfractures were analyzed with respect to density and orientation as a function of distance from the fault. Microfracture density decreases with distance from the fault core to background levels at approximately...

  15. Power system fault analysis based on intelligent techniques and intelligent electronic device data 

    E-Print Network [OSTI]

    Luo, Xu

    2007-09-17

    This dissertation has focused on automated power system fault analysis. New contributions to fault section estimation, protection system performance evaluation and power system/protection system interactive simulation have ...

  16. Formal Modelling and Analysis of Business Information Applications with Fault Tolerant Middleware

    E-Print Network [OSTI]

    Southampton, University of

    COMPUTING SCIENCE Formal Modelling and Analysis of Business Information Applications with Fault to prove properties of models of business protocols and expose weaknesses of certain middleware.. Formal Modelling and Analysis of Business Information Applications with Fault Tolerant Middleware [By] J

  17. On strong fault tolerance (or strong Menger-connectivity) of multicomputer networks 

    E-Print Network [OSTI]

    Oh, Eunseuk

    2004-11-15

    As the size of networks increases continuously, dealing with networks with faulty nodes becomes unavoidable. In this dissertation, we introduce a new measure for network fault tolerance, the strong fault tolerance (or ...

  18. CITATION Professor Desmond Ball, School of International, Political and Strategic Studies, Strategic and Defence Studies Centre, ANU College of Asia and the Pacific

    E-Print Network [OSTI]

    CITATION ­ Professor Desmond Ball, School of International, Political and Strategic Studies contributions to understanding nuclear strategy, Australian defence, signals intelligence, regional security politics, and. most recently, conflict in Southeast Asia, have all been motivated by an unflinching

  19. Appearance Normalization of Histology Slides Jared Vicorya

    E-Print Network [OSTI]

    and intensity normalization of digitized histology slides stained with two different agents. In comparison to adjustment of faded slides are given, and the effectiveness of the method in aiding statistical classification is shown. Keywords: appearance normalization, histology 1. Introduction Stains are often used

  20. Significantly improved dehydrogenation of ball-milled MgH2 doped with CoFe2O4 nanoparticles

    E-Print Network [OSTI]

    Volinsky, Alex A.

    Engineering, University of South Florida, Tampa, FL 33620, USA h i g h l i g h t s CoFe2O4 has strong 2014 Keywords: Cobalt ferrite Hydrogen storage Magnesium hydride Dehydrogenation temperature a b s t r a c t CoFe2O4 nanoparticles are added to magnesium hydride (MgH2) by high-energy ball milling in order

  1. Tune of Take Me Out To The Ball Game There is an end to the OIL game

    E-Print Network [OSTI]

    Nightingale, Peter

    Oil Game! Tune of Take Me Out To The Ball Game There is an end to the OIL game Soon we'll sit for the GREEN life The only way to SURVIVE Let's shout one, two, three, And break free, Of the OLD OIL GAME! Watch that hole in the OCEAN Spewing oil like the plague Killing the fish and the BIRDS and more

  2. Normalizing the causality between time series

    E-Print Network [OSTI]

    Liang, X San

    2015-01-01

    Recently, a rigorous yet concise formula has been derived to evaluate the information flow, and hence the causality in a quantitative sense, between time series. To assess the importance of a resulting causality, it needs to be normalized. The normalization is achieved through distinguishing three types of fundamental mechanisms that govern the marginal entropy change of the flow recipient. A normalized or relative flow measures its importance relative to other mechanisms. In analyzing realistic series, both absolute and relative information flows need to be taken into account, since the normalizers for a pair of reverse flows belong to two different entropy balances; it is quite normal that two identical flows may differ a lot in relative importance in their respective balances. We have reproduced these results with several autoregressive models. We have also shown applications to a climate change problem and a financial analysis problem. For the former, reconfirmed is the role of the Indian Ocean Dipole as ...

  3. A Methodology and Tool Support for the Design and Evaluation of Fault Tolerant, Distributed Embedded Systems

    E-Print Network [OSTI]

    McKelvin, Jr., Mark Lee

    2011-01-01

    Complexity of Embedded Systems . . . . . . . . . . . . . . .Fault Tolerant Design of Distributed Embedded Systems DesignMethodologies for Embedded Systems . . . . . . . . . . . .

  4. Project EARTH-13-SHELLJC1: Polygonal faults and de-watering of mudrocks during early burial

    E-Print Network [OSTI]

    Henderson, Gideon

    Geology. 28, 1593-1610. Goulty, N.J. 2008. Geomechanics of polygonal fault systems: a review. Petroleum

  5. Symmetry and degeneracy of the curved Coulomb potential on the S3 ball

    E-Print Network [OSTI]

    Rivera, Adrian Pallares; 10.1088/1751-8113/44/44/445302

    2012-01-01

    The "curved" Coulomb potential on the S3 ball, whose isometry group is SO(4), takes the form of a cotangent function, and when added to the four-dimensional squared angular momentum operator, one of the so(4) Casimir invariants, a Hamiltonian is obtained which describes a perturbance of the free geodesic motion that results peculiar in several aspects. The spectrum of such a motion has been studied on various occasions and is known to carry unexpectedly so(4) degeneracy patterns despite the non-commutativity of the perturbance with the Casimir operator. We here suggest an explanation for this behavior in designing a set of operators which close the so(4) algebra and whose Casimir invariant coincides with the Hamiltonian of the perturbed motion at the level of the eigenvalue problem. The above operators are related to the canonical geometric SO(4) generators on S3 by a non-unitary similarity transformation of the scaling type. In this fashion, we identify a complementary option to the deformed dynamical so(4) ...

  6. Symmetry and degeneracy of the curved Coulomb potential on the S3 ball

    E-Print Network [OSTI]

    Adrian Pallares Rivera; Mariana Kirchbach

    2012-02-09

    The "curved" Coulomb potential on the S3 ball, whose isometry group is SO(4), takes the form of a cotangent function, and when added to the four-dimensional squared angular momentum operator, one of the so(4) Casimir invariants, a Hamiltonian is obtained which describes a perturbance of the free geodesic motion that results peculiar in several aspects. The spectrum of such a motion has been studied on various occasions and is known to carry unexpectedly so(4) degeneracy patterns despite the non-commutativity of the perturbance with the Casimir operator. We here suggest an explanation for this behavior in designing a set of operators which close the so(4) algebra and whose Casimir invariant coincides with the Hamiltonian of the perturbed motion at the level of the eigenvalue problem. The above operators are related to the canonical geometric SO(4) generators on S3 by a non-unitary similarity transformation of the scaling type. In this fashion, we identify a complementary option to the deformed dynamical so(4) Higgs algebra constructed in terms of the components of the ordinary angular momentum and a related Runge-Lenz vector.

  7. n-Dimensional Gravity Little Black Holes, Dark Matter, and Ball Lightning

    E-Print Network [OSTI]

    Rabinowitz, M

    2001-01-01

    The gravitational field, and radiation from quantized gravitational atoms and little black holes (LBH) are analyzed in n-space, i.e. in all dimensions from 0 to o to develop insights into possible additional compacted dimensions as predicted by hierarchy and string theory. It is shown that the entropy of LBH is significantly greater in higher dimensional space with potential implications to the initial entropy of the universe. A case is made that LBH are the dark matter of the universe, and can manifest themselves as the core energy source of ball lightning (BL). The LBH incidence rate on earth is related to BL occurrence and has the potential of aiding in the determination of the distribution of LBH and hence dark matter in the universe. Examination of LBH interactions with the atmosphere are found to be in accord with observations of BL. Possibilities are explored as to why Hawking radiation has been undetected in over 25 years. An alternate LBH tunneling radiation model is described.

  8. n-Dimensional Gravity: Little Black Holes, Dark Matter, and Ball Lightning

    E-Print Network [OSTI]

    Mario Rabinowitz

    2003-03-30

    The gravitational field, and radiation from quantized gravitational atoms and little black holes (LBH) are analyzed in n-space, i.e. in all dimensions to develop insights into possible additional compacted dimensions as predicted by hierarchy and string theory. It is shown that the entropy of LBH is significantly greater in higher dimensional space with potential implications to the initial entropy of the universe. A case is made that LBH are the dark matter of the universe, and can manifest themselves as the core energy source of ball lightning (BL). The LBH incidence rate on earth is related to BL occurrence and has the potential of aiding in the determination of the distribution of LBH and hence dark matter in the universe. Examination of LBH interactions with the atmosphere are found to be in accord with observations of BL. Possibilities are explored as to why Hawking radiation has been undetected in over 25 years. An alternate LBH tunneling radiation model is described.

  9. Pharmacological enhancement of memory or cognition in normal subjects

    E-Print Network [OSTI]

    Lynch, Gary; Cox, Conor D.; Gall, Christine M.

    2014-01-01

    enhancement in normal subjects Demeter, E. , and Sarter,enhancement in normal subjects Katche, C. , Goldin, A. ,enhancement in normal subjects by an ampakine (CX717) in

  10. Numerical Simulation of Fault Zone Guided Waves: Accuracy and 3-D Effects

    E-Print Network [OSTI]

    Ben-Zion, Yehuda

    seismic velocity. When sources are located in or close to these low-velocity zones, guided seismic head for seismic fault zone head and trapped waves. Fault zone head waves propagate along material discontinuity Pure and Applied Geophysics #12;traveling inside low velocity fault zone layers with dispersive

  11. An Empirical Study on Testing and Fault Tolerance for Software Reliability Engineering

    E-Print Network [OSTI]

    Lyu, Michael R.

    An Empirical Study on Testing and Fault Tolerance for Software Reliability Engineering Michael R University of Hong Kong {lyu, zbhuang, samsze, xcai}@cse.cuhk.edu.hk Abstract Software testing and software the effectiveness of software testing and software fault tolerance, mutants were created by injecting real faults

  12. Oil and Gas CDT Bots in Rocks: Intelligent Rock Deformation for Fault Rock

    E-Print Network [OSTI]

    Henderson, Gideon

    Heriot-Watt University, Institute of Petroleum Engineering Supervisory Team · Dr Helen Lewis, Heriot://www.pet.hw.ac.uk/staff-directory/jimsomerville.htm Key Words Nano/Micro sensors; faults; fault zones; geomechanics; rock mechanics; rock deformation-deformed equivalent, a different lab-deformed example and a geomechanical simulation of a fault zone showing permanent

  13. Detection and extraction of fault surfaces in 3D seismic data Israel Cohen1

    E-Print Network [OSTI]

    Cohen, Israel

    for seismic interpretation. INTRODUCTION Fault surfaces are common subterranean structures that are asso that are unrelated to faults. Furthermore, creating a consistent geological interpretation from large 3D-seismicDetection and extraction of fault surfaces in 3D seismic data Israel Cohen1 , Nicholas Coult2

  14. Measuring radon flux across active faults: Relevance of excavating and possibility of satellite discharges

    E-Print Network [OSTI]

    Klinger, Yann

    Measuring radon flux across active faults: Relevance of excavating and possibility of satellite January 2010 Keywords: Exhalation flux Radon-222 Carbon dioxide Faults Earthquake Trench a b s t r a c on the Xidatan segment of the Kunlun Fault, Qinghai Province, China, using measurement of the radon- 222

  15. Resistive Bridge Fault Model Evolution From Conventional to Ultra Deep Submicron Technologies

    E-Print Network [OSTI]

    Polian, Ilia

    Resistive Bridge Fault Model Evolution From Conventional to Ultra Deep Submicron Technologies Ilia three resistive bridging fault models valid for dif- ferent CMOS technologies. The models. The second model is obtained by fitting SPICE data. The third resistive bridging fault model uses Berkeley

  16. Are stress distributions along faults the signature of asperity squeeze? J. Schmittbuhl,1

    E-Print Network [OSTI]

    Schmittbuhl, Jean

    Are stress distributions along faults the signature of asperity squeeze? J. Schmittbuhl,1 G of the stress field along faults and test our model in the case of the Nojima fault, Japan where unique estimates of the absolute stress field have been obtained. The model consists of two parts: an up

  17. Recommendations for CSM and Riso Ground Fault Detector Trip Jack Flicker and Jay Johnson

    E-Print Network [OSTI]

    " in the ground fault ground fault fuse.. As a result of this discovery, the Solar America Board for Codes and Standards identified a number of alternatives to ground fault fuses, but these technologies have limited on rooftop systems, the resulting fire can burn down the building and put occupants' lives at risk. Further

  18. Compiler-directed Program-fault Coverage for Highly Available Java Internet Services

    E-Print Network [OSTI]

    Martin, Richard P.

    Haverford, PA 19041 Abstract: We present a new approach that uses compiler- directed fault-injection appli- cation code in two ways: to direct fault injection to occur at appropriate points during analyses to direct fault injection and measure the resulting coverage of recovery code. Our technique

  19. Yield Modeling and Analysis of a Clockless Asynchronous Wave Pipeline with Pulse Faults

    E-Print Network [OSTI]

    Ayers, Joseph

    Yield Modeling and Analysis of a Clockless Asynchronous Wave Pipeline with Pulse Faults T. Feng fault model and its modeling and analysis methods in a clockless asynchronous wave pipeline fault rate model for establishing a sound theoretical foundation for clockless wave pipeline design

  20. Modeling the heterogeneous hydraulic properties of faults using constraints from reservoir-induced

    E-Print Network [OSTI]

    Cowie, Patience

    Modeling the heterogeneous hydraulic properties of faults using constraints from reservoir the damage zone surrounding faults. The Ac¸u dam is a 34 m high earth-filled dam constructed in 1983 pattern of earthquake clustering and migration that suggests heterogeneous fault zone hydraulic properties

  1. High voltage fault current limiter having immersed phase coils

    DOE Patents [OSTI]

    Darmann, Francis Anthony

    2014-04-22

    A fault current limiter including: a ferromagnetic circuit formed from a ferromagnetic material and including at least a first limb, and a second limb; a saturation mechanism surrounding a limb for magnetically saturating the ferromagnetic material; a phase coil wound around a second limb; a dielectric fluid surrounding the phase coil; a gaseous atmosphere surrounding the saturation mechanism.

  2. Ris-M-2311 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE

    E-Print Network [OSTI]

    evaluated and listed. The cut sets were evaluated using FAUNET and the FAUNET interface programs included order. During evaluation of the HI fault tree an interesting effect was observed. The shut off valve circuit with cross coupling to two gas flow sensors. The sensors are represented by the "load" components

  3. Fault-Tolerant Queries over Sensor Data Iosif Lazaridis1

    E-Print Network [OSTI]

    Venkatasubramanian, Nalini

    -generated values in the presence of faults. Small sensors are fragile, have fi- nite energy and memory demon- strate the good performance of FATE-CSQ compared to competing protocols with realistic simulation, thus im- proving reaction times, (iii) preserving the crucial re- sources of wireless bandwidth

  4. RIS-M-2326 FAULT TREE AND CAUSE CONSEQUENCE ANALYSIS

    E-Print Network [OSTI]

    and control, nuclear reactor safety systems and aircraft landing systems. For systems of failure in operations. For example a nuclear reactor shutdown system should fail at a rate which Abstract. A theory underlying application of automatic fault tree analysis to computer programs

  5. IEEE TRANSACTION ON COMPUTERS 1 Adaptive Fault Management of Parallel

    E-Print Network [OSTI]

    Lan, Zhiling

    of high performance computing (HPC) continues to grow, application fault resilience becomes crucial- tions, High performance computing, Large-scale systems. I. INTRODUCTION IN the field of high performance Performance Computing Zhiling Lan, Member, IEEE, and Yawei Li, Student Member, IEEE Abstract--As the scale

  6. Experimental and computational studies on stacking faults in zinc titanate

    SciTech Connect (OSTI)

    Sun, W.; Ageh, V.; Mohseni, H.; Scharf, T. W. E-mail: Jincheng.Du@unt.edu; Du, J. E-mail: Jincheng.Du@unt.edu

    2014-06-16

    Zinc titanate (ZnTiO{sub 3}) thin films grown by atomic layer deposition with ilmenite structure have recently been identified as an excellent solid lubricant, where low interfacial shear and friction are achieved due to intrafilm shear velocity accommodation in sliding contacts. In this Letter, high resolution transmission electron microscopy with electron diffraction revealed that extensive stacking faults are present on ZnTiO{sub 3} textured (104) planes. These growth stacking faults serve as a pathway for dislocations to glide parallel to the sliding direction and hence achieve low interfacial shear/friction. Generalized stacking fault energy plots also known as ?-surfaces were computed for the (104) surface of ZnTiO{sub 3} using energy minimization method with classical effective partial charge potential and verified by using density functional theory first principles calculations for stacking fault energies along certain directions. These two are in qualitative agreement but classical simulations generally overestimate the energies. In addition, the lowest energy path was determined to be along the [451{sup ¯}] direction and the most favorable glide system is (104) ?451{sup ¯}? that is responsible for the experimentally observed sliding-induced ductility.

  7. Sensor Fault Detection in Power Plants Andrew Kusiak1

    E-Print Network [OSTI]

    Kusiak, Andrew

    Sensor Fault Detection in Power Plants Andrew Kusiak1 and Zhe Song2 Abstract: This paper presents models; Diagnosis; Combustion; Power plants; Probe instruments. Introduction Measurements in industrial and Soroush 2003 . Any false reading could lead to di- sastrous outcomes. In a coal-fired power plant, faulty

  8. Discriminative Pattern Mining in Software Fault Detection Giuseppe Di Fatta

    E-Print Network [OSTI]

    Leue, Stefan

    and Subject Descriptors D.2.5 [Software Engineering]: Testing and Debugging-- Debugging aids, Diagnostics. This money is largely spent during the software testing and debugging phases [12]. The applicable software of software testing data which can support and speedup the detection of software faults. The most commonly

  9. Fault properties from seismic Q M. H. Worthington1

    E-Print Network [OSTI]

    Cambridge, University of

    . Key words: attenuation, exploration seismology, fault models, Q, seismic wave propagation. I N T R O DFault properties from seismic Q M. H. Worthington1 and J. A. Hudson2 1 T. H. Huxley School of seismic Q from a North Sea vertical seismic pro®ling data set has revealed an abrupt increase

  10. Resource Aggregation for Fault Tolerance in Integrated Services Networks

    E-Print Network [OSTI]

    Dovrolis, Constantinos

    it is critical that the failure of a network component does not lead to unexpected termination or long dis of RAFT is to setup every fault tolerant flow along a secondary path that serves as a backup in case the primary path fails. The secondary path resource reservations are aggregated whenever possible to reduce

  11. Test Case Purification for Improving Fault Localization Jifeng Xuan

    E-Print Network [OSTI]

    Test Case Purification for Improving Fault Localization Jifeng Xuan INRIA Lille - Nord Europe Lille on the execution trace of test cases. Failing test cases and their assertions form test oracles for the failing behavior of the system under analysis. In this paper, we propose a novel concept of spectrum driven test

  12. Observability of Stuck-at-Faults with Differential Power Analysis

    E-Print Network [OSTI]

    Boyer, Edmond

    ,flottes,rouzeyre}@lirmm.fr Abstract In this paper we propose an innovative method to test integrated circuits based on the use of the current consumed by the circuit during net transitions, it does not require observing primary outputs of the circuit and allows the test of hard-to-observe faults. Conversely to Iddq, this technique is not sensible

  13. Fault-Tolerant and Reliable Computation in Cloud Computing

    E-Print Network [OSTI]

    Deng, Jing

    Fault-Tolerant and Reliable Computation in Cloud Computing Jing Deng Scott C.-H. Huang Yunghsiang S, Taipei, 106 Taiwan. § Intelligent Automation, Inc., Rockville, MD, USA. Abstract-- Cloud computing of scientific computation in cloud computing. We investigate a cloud selection strategy to decompose the matrix

  14. Influence of plastic deformation on bimaterial fault rupture directivity

    E-Print Network [OSTI]

    Dmowska, Renata

    Influence of plastic deformation on bimaterial fault rupture directivity Nora DeDontney,1 Elizabeth of the role of the stress state on the distribution of plastic deformation and the direction of preferred in determining the location of plastic deformation. For different orientations, plastic deformation can

  15. Risk Assessment of Railway Transportation Systems using Timed Fault Trees

    E-Print Network [OSTI]

    Miller, Alice

    by the GRAIL (GNSS Introduction in the RAIL sector) project that is under development cooperated with ERTMS difference between the GRAIL and current railway systems is that it involves unmanned operation. Trains to eliminate the fault, to prevent the accident. There are still many unsolved problems related to GRAIL

  16. A Fault Tolerant Hierarchical Network on Chip Router Architecture

    E-Print Network [OSTI]

    Zilic, Zeljko

    Received: 15 March 2012 /Accepted: 19 July 2013 # Springer Science+Business Media New York 2013 Abstract and energy consumption. Keywords Network on chip . Hierarchical topology . Fault-tolerant 1 Introduction DueC architectures supply a practical alternative for traditional SoC interconnect ap- proaches [3]. While

  17. SUSTAIN: An Adaptive Fault Tolerance Service for Geographically Overlapping

    E-Print Network [OSTI]

    Han, Qi "Chee"

    -Physical Systems Gholam Abbas Angouti Kolucheh and Qi Han Department of Mathematical and Computer Sciences. However, constant failures may occur in these WSNs, causing a network to be partitioned into several parts sensor networks; fault tolerance; network protocol; cyber physical systems 1. INTRODUCTION Cyber

  18. Principal Component Analysis for Fault Detection and Structure Health Monitoring

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Principal Component Analysis for Fault Detection and Structure Health Monitoring Nicolas Stoffels structure to ensure its health monitoring. The proposed approach is based on the PCA algorithm. Once PCA promptly and precisely [5]. FDI is also important in SHM (Structure Health Monitoring) because of aging

  19. Power Transformer faulT DeTecTor

    E-Print Network [OSTI]

    Mucina, Ladislav

    Power Transformer faulT DeTecTor Summary of technology Power transformers are major parts of the power distribution network, used to step up and step down voltages for transmission between power stations and electricity consumers. Transformers are prone to failure due to external damage or general

  20. Module Placement for Fault-Tolerant Microfluidics-Based Biochips

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Module Placement for Fault-Tolerant Microfluidics-Based Biochips FEI SU and KRISHNENDU CHAKRABARTY Duke University Microfluidics-based biochips are soon expected to revolutionize clinical diagnosis, DNA sequencing, and other laboratory procedures involving molecular biology. Most microfluidic biochips today

  1. Identifying Efficiency Degrading Faults in Split Air Conditioning Systems 

    E-Print Network [OSTI]

    Terrill, T. J.; Brown, M. L.; Cheyne, R. W. Jr.; Cousins, A. J.; Daniels, B. P.; Erb, K. L.; Garcia, P. A.; Leutermann, M. J.; Nel, A. J.; Robert, C. L.; Widger, S. B.; Williams, A. G.; Rasmussen, B. P.

    2013-01-01

    and fault diagnosis of vapor-compression equipment." HVAC&R Research 15.3 (2009): 597-616. (12) N, Lu et al., ?Air Conditioner Compressor Performance Model,? Pac. NW Nat. Lib., Richland, WA, Rep. PNNL-17796, 2008. (13) A. Maier, ?Troubleshooting Thermal...

  2. Consequences of Fault Currents Contributed by Distributed Generation

    E-Print Network [OSTI]

    the system Zbus matrix. The effects of merchant plants, such as Independent Power Producers, are not taken Power Systems Engineering Research Center A National Science Foundation Industry/University Cooperative Research Center since 1996 PSERC #12;Power Systems Engineering Research Center Consequences of Fault

  3. Java Card Operand Stack: Fault Attacks, Combined Attacks and Countermeasures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Java Card Operand Stack: Fault Attacks, Combined Attacks and Countermeasures Guillaume Barbu1. Until 2009, Java Cards have been mainly threatened by Log- ical Attacks based on ill-formed applications. The publication of the Java Card 3.0 Connected Edition specifications and their mandatory on-card byte code

  4. Fracture surface energy of the Punchbowl fault, San Andreas system

    E-Print Network [OSTI]

    Chester, Frederick M.

    Fracture surface energy of the Punchbowl fault, San Andreas system Judith S. Chester1 , Frederick M. Chester1 & Andreas K. Kronenberg1 Fracture energy is a form of latent heat required to create weakening1­3 . Fracture energy has been estimated from seismological and experimental rock deformation data4

  5. RIS-M-2311 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE

    E-Print Network [OSTI]

    . INIS descriptors. CONTROL EQUIPMENT; ELECTRICAL EQUIPMENT; FAULT TREE ANALYSIS; INDUSTRIAL PLANTS, a heat exchanger can be regarded as two pipes, with a heat exchange between them. In later volumes, more pumps, and valve closure. 5) It is not generally possible to determine the effect of

  6. Highly Available, Fault-Tolerant, Parallel Dataflows Mehul A. Shah

    E-Print Network [OSTI]

    Hellerstein, Joseph M.

    Highly Available, Fault-Tolerant, Parallel Dataflows Mehul A. Shah U.C. Berkeley mashah@cs.berkeley.edu Joseph M. Hellerstein U.C. Berkeley Intel Research, Berkeley jmh@cs.berkeley.edu Eric Brewer U.C. This delicate inte- gration allows us to tolerate failures of portions of a parallel dataflow without

  7. Algorithm-Based Fault Tolerance for Fail-Stop Failures

    E-Print Network [OSTI]

    Dongarra, Jack

    after failures, the next generation high performance computing applications need to be able to continue1 Algorithm-Based Fault Tolerance for Fail-Stop Failures Zizhong Chen and Jack Dongarra Abstract Fail-stop failures in distributed environments are often tolerated by checkpointing or message logging

  8. Regional seismic reflection line, southern Illinois Basin, provides new data on Cambrian rift geometry, Hicks Dome genesis, and the Fluorspar Area Fault Complex

    SciTech Connect (OSTI)

    Potter, C.J.; Goldhaber, M.B.; Taylor, C.D. (U.S. Geological Survey, Denver, CO (United States)); Heigold, P.C. (Illinois State Geological Survey, Champaign, IL (United States))

    1992-01-01

    Detailed studies of the subsurface structure of the Cambrian Reelfoot rift (RFR) in the Midwestern US provide important insights into continental rifting processes and into the structural fabric of a zone of modern intracratonic seismicity (New Madrid zone). High-quality oil industry seismic reflection data show that in the area of transition between the RFR and the Rough Creek Graben (RCG) the geometry of the Cambrian rift system is that of a half-graben that thickens to the southeast. This contrasts with the northward-thickening half-graben observed to the east in the RCG and with the more symmetric graben to the south in the RFR. An 82.8-km segment of a northwest-southeast seismic reflection profile in southeastern Illinois and western Kentucky shows that near Hicks Dome, Illinois, Middle and Lower Cambrian syn-rift sedimentary rocks occupy about 0.35 s (two-way travel time) on the seismic reflection section (corresponding to a thickness of about 970 m). This stratigraphic interval occupies about 0.45 s (1,250 m) near the Ohio river and is thickest against the Tabb Fault System (TFS) in Kentucky, where it occupies 0.7 s (1,940 m). The seismic data show that in this part of the Cambrian rift the master fault was part of the TFS and that normal displacement on the TFS continued through middle Paleozoic time. The seismic data also provide new information on the late Paleozoic development of Hicks-Dome and the surrounding Fluorspar Area Fault Complex (FAFC) in southeastern Illinois and western Kentucky. A series of grabens and horsts in the FAFC document a late Paleozoic reactivation of the RFR. Comparison of the reflection data with surface mineralization patterns shows that in most cases mineralized graben-bounding faults clearly cut basement or are splays from faults that cut basement.

  9. Response of creepmeters on the San Andreas fault near Parkfield to the earthquake

    SciTech Connect (OSTI)

    Schulz, S.S.; Mavko, G.M.; Brown, B.D.

    1990-01-01

    A total of 14 US Geological Survey creepmeters on the San Andreas fault in central California recorded coseismic steps coincident with the M = 6.7 May 2 earthquake. Creepmeters near Parkfield recorded the largest effects. Postearthquake creep rates slowed significantly, and creep at one station reversed to left lateral. About 4 months after the earthquake, decreased rates caused cumulative creep at four Parkfield stations to fall below long-term linear trends observed before May 2. At several stations, creep continued to be either left lateral or slower than normal for the rest of 1983. By January 31, 1984, all but two stations recorded resumption of right-lateral creep at reduced rates. As late as April 1, 1984, however, one station north of Parkfield continued to record left-lateral drift, and another station at the south end of the creeping section south of Parkfield recorded little or no movement. One interpretation of the creep slowdown after May 2 is that the Coalinga main shock released accumulated stress in the upper kilometer or so of the San Andreas fault near Parkfield, and several months elapsed before stress built up sufficiently to allow creep to resume. A multiple-linear-regression analysis of coseismic-step size as a function of distance from the creepmeter to an earthquake focus and (or) earthquake magnitude showed a linear correlation between step size and magnitude for the data from two stations. No correlation was found between step size and distance to focus for the data from any of the stations. Reduction in step sizes after May 2, despite numerous large aftershocks, suggests that stored local stress is the dominant factor in coseismic-step size.

  10. 100 E. Normal Street Kirksville, MO 63501

    E-Print Network [OSTI]

    Gering, Jon C.

    . Curran Prendergast Repertoire The 2015 Midwest Band Conductors' Symposium" and address to: Dr. Curran Prendergast, 100 East Normal St. Kirksville, MO 63501.truman.edu/mbcs Clinicians: Dr. Paul Popiel, Director of Bands, University of Kansas Dr. Curran

  11. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization a program can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness

  12. NORMALITY VERSUS COUNTABLE PARACOMPACTNESS IN PERFECT SPACES

    E-Print Network [OSTI]

    Wage, M. L.; Fleissner, William G.; Reed, G. M.

    1976-07-01

    BULLETIN OF THE AMERICAN MATHEMATICAL SOCIETY Volume 82, Number 4, July 1976 NORMALITY VERSUS COUNTABLE PARACOMPACTNESS IN PERFECT SPACES BY M. L. WAGE, W. G. FLEISSNER, AND G. M. REED Communicated March 5, 1976 Introduction. The purpose... of this announcement is to present, in a unified fashion, solutions to long outstanding questions concerning the relationship between countable paracompactness and normality conditions in perfect spaces. Each section of this paper is the contribution of a single...

  13. Direct observation of fault zone structure at the brittleductile transition along the SalzachEnnstalMariazellPuchberg fault

    E-Print Network [OSTI]

    Hacker, Bradley R.

    EnnstalMariazellPuchberg fault system, Austrian Alps Erik Frost,1,2 James Dolan,1 Lothar Ratschbacher,3 Bradley Hacker,4 no wider than a few tens of meters. Citation: Frost, E., J. Dolan, L. Ratschbacher, B. Hacker, and G and Evans, 1988; Scholz, 1988; Shimamoto, 1989; Hacker and Christie, 1990; Chester, 1995; White, 1996

  14. Development of Asset Fault Signatures for Prognostic and Health Management in the Nuclear Industry

    SciTech Connect (OSTI)

    Vivek Agarwal; Nancy J. Lybeck; Randall Bickford; Richard Rusaw

    2014-06-01

    Proactive online monitoring in the nuclear industry is being explored using the Electric Power Research Institute’s Fleet-Wide Prognostic and Health Management (FW-PHM) Suite software. The FW-PHM Suite is a set of web-based diagnostic and prognostic tools and databases that serves as an integrated health monitoring architecture. The FW-PHM Suite has four main modules: Diagnostic Advisor, Asset Fault Signature (AFS) Database, Remaining Useful Life Advisor, and Remaining Useful Life Database. This paper focuses on development of asset fault signatures to assess the health status of generator step-up generators and emergency diesel generators in nuclear power plants. Asset fault signatures describe the distinctive features based on technical examinations that can be used to detect a specific fault type. At the most basic level, fault signatures are comprised of an asset type, a fault type, and a set of one or more fault features (symptoms) that are indicative of the specified fault. The AFS Database is populated with asset fault signatures via a content development exercise that is based on the results of intensive technical research and on the knowledge and experience of technical experts. The developed fault signatures capture this knowledge and implement it in a standardized approach, thereby streamlining the diagnostic and prognostic process. This will support the automation of proactive online monitoring techniques in nuclear power plants to diagnose incipient faults, perform proactive maintenance, and estimate the remaining useful life of assets.

  15. High resolution, shallow seismic reflection survey of the Pen Branch fault

    SciTech Connect (OSTI)

    Stieve, A.

    1991-05-15

    The purpose of this project, at the Savannah River River Site (SRS) was to acquire, process, and interpret 28 km (17.4 miles) of high resolution seismic reflection data taken across the trace of the Pen Branch fault and other suspected, intersecting north-south trending faults. The survey was optimized for the upper 300 ft of geologic strata in order to demonstrate the existence of very shallow, flat lying horizons, and to determine the depth of the fault or to sediments deformed by the fault. Field acquisition and processing parameters were selected to define small scale spatial variability and structural features in the vicinity of the Pen Branch fault leading to the definition and the location of the Pen Branch fault, the shallowest extent of the fault, and the quantification of the sense and magnitude of motion. Associated geophysical, borehole, and geologic data were incorporated into the investigation to assist in the determination of optimal parameters and aid in the interpretation.

  16. Can flat-ramp-flat fault geometry be inferred from fold shape?: A comparison of kinematic and mechanical folds

    E-Print Network [OSTI]

    Savage, Heather M.

    in the suprajacent fold shapes. Differences between the kinematic and mechanical fault-fold relationships highlight rights reserved. Keywords: Fault-bend folding; Mechanical models; Kinematic models; Fault geometry and mechanical models have been used to analyze fault-cored folds. Kinematic models, which balance the geometry

  17. Generalized Standby-Sparing Techniques for Energy-Efficient Fault Tolerance in Multiprocessor Real-Time Systems

    E-Print Network [OSTI]

    Aydin, Hakan

    Generalized Standby-Sparing Techniques for Energy-Efficient Fault Tolerance in Multiprocessor Real-Sparing (SS) technique has been pre- viously explored to improve energy efficiency while providing fault faults, we develop energy-efficient fault tolerance techniques for real-time systems deploying

  18. Integrated fault seal analysis and risk assessemt: Okan and Meren Fields, Nigeria

    SciTech Connect (OSTI)

    Eisenberg, R.A. (Chevron Petroleum Technology, Co., La Habra, CA (United States)); Brenneman, R.J. (Chevron Overseas Petroleum Co., San Ramon, CA (United States)); Adepoju, A.A. (Chevron Nigeria Ltd., Lagos (Nigeria))

    1996-01-01

    Integration of production, geochemical, seismic, well log, and structural data provides important constraints on the sealing capacity and dynamic behavior of fault juxtaposed reservoirs in Okan and Meren fields, offshore Nigeria. Correlations were found between pressure decline histories, juxtaposed fluid types, oil composition, fluid contact relationships, fault sealing/leaking condition, and estimates of the composition of the fault gouge. Fault plane sections defined reservoir juxtapositions and potential cross-fault spill points. Smear gouge ratios calculated from E-logs were used to estimate the composition of fault-gouge materials between juxtaposed reservoirs. These tools augmented interpretation of seal/nonseal character in proved reservoirs and were used to quantify fault seal risk of untested, fault-dependent closures. In the Okan Field juxtapositions of the G-, H, L-, M, and O-sands were analyzed. Smear gouge ratios correlated to fluid contact relationships and pressure decline histories within these juxtaposed reservoirs empirically calibrate sealing potential. The results of these analyses were then used to interpret production-induced fault seal breakdown within the G-sands and to risk seal integrity of fault-dependent closures within the untested 0-sands in an adjacent, upthrown fault block. Within this fault block the presence of potential fault intersection leak points and large areas of sand/sand juxtaposition with high smear gouge ratios (low sealing potential) limits column heights and potential reserves within the O-sand package. In the Meren Field the E- and G-sands are juxtaposed, on different pressure decline, geochemically distinct, and are characterized by low smear gouge ratios. In contrast, the G- and H-sands, juxtaposed across the same fault, contain similar OOWCs and are characterized by high smear gouge ratios.

  19. On the amorphization behavior and hydrogenation performance of high-energy ball-milled Mg{sub 2}Ni alloys

    SciTech Connect (OSTI)

    Kou, Hongchao; Hou, Xiaojiang; Zhang, Tiebang, E-mail: tiebangzhang@nwpu.edu.cn; Hu, Rui; Li, Jinshan; Xue, Xiangyi

    2013-06-15

    Amorphous Mg{sub 2}Ni alloy was prepared by high energy ball-milling starting with polycrystalline Mg{sub 2}Ni which was prepared with the help of a metallurgy method by using a SPEX 8000D mill. The microstructural and phase structure characterization of the prepared materials was performed via scanning electron microscopy, transition electron microscope and X-ray diffraction. The thermal stabilities were investigated by differential scanning calorimetry. The apparent activation energies were determined by means of the Kissinger method. The first and second crystallization reactions take place at ? 255 °C and ? 410 °C, and the corresponding activation energy of crystallization is E{sub a1} = 276.9 and E{sub a2} = 382.4 kJ/mol, respectively. At 3 MPa hydrogen pressure and 250 °C, the hydrogen absorption capacities of crystalline, partially and fully amorphous Mg{sub 2}Ni alloy are 2.0 wt.%, 3.2 wt.% and 3.5 wt.% within 30 min, respectively. - Graphical Abstract: We mainly focus on the amorphization behavior of crystalline Mg{sub 2}Ni alloy in the high energy ball-milling process and the crystallization behavior of the amorphous Mg{sub 2}Ni alloy in a follow-up heating process. The relationship of milling, microstructure and hydrogenation properties is established and explained by models. - Highlights: • Amorphous Mg{sub 2}Ni has been obtained by high energy ball milling the as-cast alloy. • The amorphization behavior of polycrystalline Mg{sub 2}Ni is presented. • The crystallization behavior of the amorphous Mg{sub 2}Ni alloy is illustrated. • Establish the relationship of milling, microstructure and hydrogenation properties.

  20. Handbook of normal frames and coordinates

    E-Print Network [OSTI]

    Bozhidar Z. Iliev

    2006-10-01

    The main subject of the book is an up-to-date and in-depth survey of the theory of normal frames and coordinates in differential geometry. The book can be used as a reference manual, review of the existing results and introduction to some new ideas and developments. In the book can be found practically all existing essential results and methods concerning normal frames and coordinates. Most of the results are represented in full detail with full, in some cases new, proofs. All classical results are expanded and generalized in various directions. Theorems of existence, uniqueness and, possibly, holonomicity of the normal frames and coordinates are proved; mostly, the proofs are constructive and some their parts can be used independently for other tasks. Besides published results, their extensions and generalizations, the book contains completely new results which appear for the first time.

  1. In the Proc. of International Conference on Parallel Processing (ICPP'07) Fault-Driven Re-Scheduling For Improving System-level Fault Resilience

    E-Print Network [OSTI]

    Lan, Zhiling

    In the Proc. of International Conference on Parallel Processing (ICPP'07) Fault-Driven Re-Scheduling For Improving System-level Fault Resilience Yawei Li* , Prashasta Gujrati* , Zhiling Lan* , Xian-he Sun,gujrpra,lan,sun}@iit.edu #Computing Division Fermi National Accelerator Laboratory Batavia, IL 60510-0500 Abstract The productivity

  2. Mechanical properties and fabric of the Punchbowl fault zone, California 

    E-Print Network [OSTI]

    Chester, Frederick Michael

    1983-01-01

    faults (DP10C) used in the Compression Tests. 88 22 Specimen configuration for Compression Tests. . 89 23 Specimen configuration for Shear Tests, . 92 LIST OF FIGURES (continued) FIGURE PAGE 24 Differential stress versus axial strai n... the motivation for establishing a program of earthquake-risk evaluation and prediction. One approach to earthquake-prediction (mechanistic approach of Higgs, 1 981 ) involves developing a sound understandi ng of the physical processes operative within...

  3. Dynamics of a Gear System with Faults in Meshing Stiffness

    E-Print Network [OSTI]

    Grzegorz Litak; Michael I. Friswell

    2004-05-23

    Gear box dynamics is characterised by a periodically changing stiffness. In real gear systems, a backlash also exists that can lead to a loss in contact between the teeth. Due to this loss of contact the gear has piecewise linear stiffness characteristics, and the gears can vibrate regularly and chaotically. In this paper we examine the effect of tooth shape imperfections and defects. Using standard methods for nonlinear systems we examine the dynamics of gear systems with various faults in meshing stiffness.

  4. Computing Instantaneous Frequency by normalizing Hilbert Transform

    DOE Patents [OSTI]

    Huang, Norden E.

    2005-05-31

    This invention presents Normalized Amplitude Hilbert Transform (NAHT) and Normalized Hilbert Transform(NHT), both of which are new methods for computing Instantaneous Frequency. This method is designed specifically to circumvent the limitation set by the Bedorsian and Nuttal Theorems, and to provide a sharp local measure of error when the quadrature and the Hilbert Transform do not agree. Motivation for this method is that straightforward application of the Hilbert Transform followed by taking the derivative of the phase-angle as the Instantaneous Frequency (IF) leads to a common mistake made up to this date. In order to make the Hilbert Transform method work, the data has to obey certain restrictions.

  5. Normal butane/iso-butane separation

    SciTech Connect (OSTI)

    Volles, W.K.; Cusher, N.A.

    1986-08-26

    This patent describes an improved pressure swing adsorption process for the separation of iso-butane from normal butane in an adsorption system having at least three adsorbent beds, each bed of which undergoes, on a cyclic basis and a processing sequence comprising: introducing a feed gas mixture of iso-butane and normal butane at an upper adsorption pressure to the feed end of the bed capable of selectively adsorbing normal butane as the more selectivity adsorbable component of the gas mixture. The iso-butane as the less readily adsorbable component passes through the bed and is discharged from the discharge end. The feed gas introduction is continued as a normal butane adsorption front is formed in the bed and passes through the bed from the feed end and breaks through at the discharge end of the bed, a portion of the iso-butane effluent stream thus discharged being diverted for passage as purge gas to another bed in the system; and countercurrently depressurizing the bed with release of gas from the feed end.

  6. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization for Mendler­Style Course­Of­Value Recursion can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness. For practical

  7. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization for Mendler-Style Course-Of-Value Recursion can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness. For practical

  8. Significance of recurrent fault movement at Grays Point quarry, southeast Missouri

    SciTech Connect (OSTI)

    Diehl, S.F.; Throckmorton, C.K. ); Clendenin, C.W. )

    1993-03-01

    Geologic relationships indicate recurrent movement on a fault exposed at Grays Point, MO. Faulting offsets Middle-Late Ordovician Plattin Group, Decorah Group, Kimmswick Limestone, and Maquoketa Group strata. In plan, the fault is characterized by a relatively narrow zone (30--70 m) of northeast-striking fault slices associated with a northwest-striking zone of right-stepping en echelon fractures. This systematic fracture-fault array identifies right-lateral strike-slip movement. A vertically offset basal Decorah Group contact shows 22 m of down-to-the-southeast dip slip, which indicates a component of oblique slip. Oldest recognizable movement on the fault is evidenced by Maquoketa Group strata that fill a northeast-striking, wedge-shaped synform. Post-Ordovician movement along an adjacent subvertical fault displaces part of this synform 300 m right laterally. In thin section, the northwest-striking fracture set shows a polyphase history of deformation indicated by cataclastic textures and intrusion of carbonate-rich fluids. Three periods of movement occurred: (1) initial fracturing sealed by authigenic mineral cements; (2) renewed fracturing associated with recrystallization of sub-rounded clasts; and (3) subsequent brecciation marked by angular clasts and filling of fractures and vugs. Each successive fluid intrusion is characterized by an increase in grain size of the authigenic cement. The fault is subparallel to the regional, northeast-striking English Hill fault system. Polyphase oblique-slip deformation suggests that the fault, like others in southeastern Missouri, is a reactivated Late Proterozoic-Cambrian zone of weakness. Initial fault reactivation occurred during Middle-Late Ordovician as opposed to Devonian, as commonly interpreted for southeast Missouri. Multiple authigenic mineral cements imply that fluids may have been an important factor influencing the fault's tendency to be reactivated.

  9. Wind Power Plant Enhancement with a Fault-Current Limiter: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Gevorgian, V.; DeLaRosa, F.

    2011-03-01

    This paper investigates the capability of a saturable core fault-current limiter to limit the short circuit current of different types of wind turbine generators.

  10. QUANTIFYING PHOTOVOLTAIC FIRE DANGER REDUCTION WITH ARC-FAULT CIRCUIT INTERRUPTERS

    E-Print Network [OSTI]

    QUANTIFYING PHOTOVOLTAIC FIRE DANGER REDUCTION WITH ARC-FAULT CIRCUIT INTERRUPTERS Kenneth M, shock hazards, and cause system downtime in photovoltaic (PV) systems. The 2011 National Electrical Code

  11. Microsoft Word - GroundFaultSAND-rev7-JJ.doc

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

    to describe analytically without transcendental equations, but the use of computer circuit simulations can describe the behavior of a PV system for a wide variety of fault...

  12. Neogene tectonics of northern Central America prior to offset across the polochic fault

    SciTech Connect (OSTI)

    Burkart, B.; Sanchez-Barreda, L.A.; Deaton, B.C.

    1985-01-01

    The reconstruction which removes 130 km of documented left slip across the Polochic fault of northern Guatemala and southern Chiapas juxtaposes the foundered block of the Gulf of Tehuantepec and extensional terrane of Guatemala, lining up prolongations of the Motagua and Jocotan faults with known structures along the coastal margin of the Chiapas massif and within the Gulf. Coast-parallel faults with sinistral displacement, located along the margins of the Chiapas depression, were also active during the Miocene time interval of south-easterly migration of the Gulf of Tehuantepec block. Extensional terrane is well expressed in Guatemala and Honduras south of the Jocotan boundary fault, beginning where the southeasterly-moving block encounters the abrupt bend in the boundary fault. This complex plate boundary became simpler when the left-lateral, east-west-trending Polochic fault sliced across the isthmus in late Miocene, offsetting Laramide structures and the arcuate Neogene plate boundary faults. During its time of major activity the Polochic served as the principal plate boundary fault, across which the major displacement occurred. Today the western part of the NOAM-CARIB plate boundary is diffuse. From western Guatemala and southern Chiapas, where buckling and locking of the Polochic fault has taken place, displacement is distributed among countless shears which extend in a belt from western Guatemala across the Chiapas massif to the western landframe of the Gulf of Tehuantepec.

  13. Does hydrologic circulation mask frictional heat on faults after large earthquakes?

    E-Print Network [OSTI]

    Fulton, Patrick M.; Harris, Robert N.; Saffer, Demian M.; Brodsky, Emily E.

    2010-01-01

    Fault stress states, pore pressure distributions, and thefrictional heating, and pore pressure scenarios show thatassuming hydrostatic pore pressure. Curiously, analysis of

  14. Multi-sensor Wireless System for Fault Detection in Induction Motors

    E-Print Network [OSTI]

    Tarkesh Esfahani, Ehsan

    2012-01-01

    Fault Diagnostics Using Wireless Sensor Networks,” IEEEOpportunities and Challenges of Wireless Sensor Networks inBrithinee, “The application of wireless sensor networks for

  15. Understanding Software Application Behaviour in Presence of Permanent and Intermittent Hardware Faults

    E-Print Network [OSTI]

    Sharma, Ankur

    2013-01-01

    to fault-tolerant soft- ware. ” Software Engineering, IEEEand Valeria Bertacco. “Software-based online detection ofAutomatic instruction-level software-only recovery. ” In

  16. Transform faults and lithospheric structure : insights from numerical models and shipboard and geodetic observations

    E-Print Network [OSTI]

    Takeuchi, Christopher S.

    2012-01-01

    Andrew Bain, Marion, and Prince Edward transform faults arePE, Prince Edward. . . . . . . . . . . . . . . . . . . . . .Bain; M, Marion; PE, Prince Edward. (a) Bathymetry (black)

  17. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

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

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. Citation Details In-Document Search Title: Normal Conditions of Transport Truck Test of a Surrogate Fuel...

  18. Status of High Power Tests of Normal Conducting Short Standing...

    Office of Scientific and Technical Information (OSTI)

    Status of High Power Tests of Normal Conducting Short Standing Wave Structures Citation Details In-Document Search Title: Status of High Power Tests of Normal Conducting Short...

  19. Development of Hydrologic Characterization Technology of Fault Zones -- Phase I, 2nd Report

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Onishi, Tiemi; Black, Bill; Biraud, Sebastien

    2009-03-31

    This is the year-end report of the 2nd year of the NUMO-LBNL collaborative project: Development of Hydrologic Characterization Technology of Fault Zones under NUMO-DOE/LBNL collaboration agreement, the task description of which can be found in the Appendix 3. Literature survey of published information on the relationship between geologic and hydrologic characteristics of faults was conducted. The survey concluded that it may be possible to classify faults by indicators based on various geometric and geologic attributes that may indirectly relate to the hydrologic property of faults. Analysis of existing information on the Wildcat Fault and its surrounding geology was performed. The Wildcat Fault is thought to be a strike-slip fault with a thrust component that runs along the eastern boundary of the Lawrence Berkeley National Laboratory. It is believed to be part of the Hayward Fault system but is considered inactive. Three trenches were excavated at carefully selected locations mainly based on the information from the past investigative work inside the LBNL property. At least one fault was encountered in all three trenches. Detailed trench mapping was conducted by CRIEPI (Central Research Institute for Electric Power Industries) and LBNL scientists. Some intriguing and puzzling discoveries were made that may contradict with the published work in the past. Predictions are made regarding the hydrologic property of the Wildcat Fault based on the analysis of fault structure. Preliminary conceptual models of the Wildcat Fault were proposed. The Wildcat Fault appears to have multiple splays and some low angled faults may be part of the flower structure. In parallel, surface geophysical investigations were conducted using electrical resistivity survey and seismic reflection profiling along three lines on the north and south of the LBNL site. Because of the steep terrain, it was difficult to find optimum locations for survey lines as it is desirable for them to be as straight as possible. One interpretation suggests that the Wildcat Fault is westerly dipping. This could imply that the Wildcat Fault may merge with the Hayward Fault at depth. However, due to the complex geology of the Berkeley Hills, multiple interpretations of the geophysical surveys are possible. iv An effort to construct a 3D GIS model is under way. The model will be used not so much for visualization of the existing data because only surface data are available thus far, but to conduct investigation of possible abutment relations of the buried formations offset by the fault. A 3D model would be useful to conduct 'what if' scenario testing to aid the selection of borehole drilling locations and configurations. Based on the information available thus far, a preliminary plan for borehole drilling is outlined. The basic strategy is to first drill boreholes on both sides of the fault without penetrating it. Borehole tests will be conducted in these boreholes to estimate the property of the fault. Possibly a slanted borehole will be drilled later to intersect the fault to confirm the findings from the boreholes that do not intersect the fault. Finally, the lessons learned from conducting the trenching and geophysical surveys are listed. It is believed that these lessons will be invaluable information for NUMO when it conducts preliminary investigations at yet-to-be selected candidate sites in Japan.

  20. Coordinated Fault-Tolerance for High-Performance Computing Final Project Report

    SciTech Connect (OSTI)

    Panda, Dhabaleswar Kumar; Beckman, Pete

    2011-07-28

    With the Coordinated Infrastructure for Fault Tolerance Systems (CIFTS, as the original project came to be called) project, our aim has been to understand and tackle the following broad research questions, the answers to which will help the HEC community analyze and shape the direction of research in the field of fault tolerance and resiliency on future high-end leadership systems. Will availability of global fault information, obtained by fault information exchange between the different HEC software on a system, allow individual system software to better detect, diagnose, and adaptively respond to faults? If fault-awareness is raised throughout the system through fault information exchange, is it possible to get all system software working together to provide a more comprehensive end-to-end fault management on the system? #15; What are the missing fault-tolerance features that widely used HEC system software lacks today that would inhibit such software from taking advantage of systemwide global fault information? #15; What are the practical limitations of a systemwide approach for end-to-end fault management based on fault awareness and coordination? #15; What mechanisms, tools, and technologies are needed to bring about fault awareness and coordination of responses on a leadership-class system? #15; What standards, outreach, and community interaction are needed for adoption of the concept of fault awareness and coordination for fault management on future systems? Keeping our overall objectives in mind, the CIFTS team has taken a parallel fourfold approach. #15; Our central goal was to design and implement a light-weight, scalable infrastructure with a simple, standardized interface to allow communication of fault-related information through the system and facilitate coordinated responses. This work led to the development of the Fault Tolerance Backplane (FTB) publish-subscribe API specification, together with a reference implementation and several experimental implementations on top of existing publish-subscribe tools. #15; We enhanced the intrinsic fault tolerance capabilities representative implementations of a variety of key HPC software subsystems and integrated them with the FTB. Targeting software subsystems included: MPI communication libraries, checkpoint/restart libraries, resource managers and job schedulers, and system monitoring tools. #15; Leveraging the aforementioned infrastructure, as well as developing and utilizing additional tools, we have examined issues associated with expanded, end-to-end fault response from both system and application viewpoints. From the standpoint of system operations, we have investigated log and root cause analysis, anomaly detection and fault prediction, and generalized notification mechanisms. Our applications work has included libraries for fault-tolerance linear algebra, application frameworks for coupled multiphysics applications, and external frameworks to support the monitoring and response for general applications. #15; Our final goal was to engage the high-end computing community to increase awareness of tools and issues around coordinated end-to-end fault management.

  1. Investigations of stacking fault density in perpendicular recording media

    SciTech Connect (OSTI)

    Piramanayagam, S. N. Varghese, Binni; Yang, Yi; Kiat Lee, Wee; Khume Tan, Hang

    2014-06-28

    In magnetic recording media, the grains or clusters reverse their magnetization over a range of reversal field, resulting in a switching field distribution. In order to achieve high areal densities, it is desirable to understand and minimize such a distribution. Clusters of grains which contain stacking faults (SF) or fcc phase have lower anisotropy, an order lower than those without them. It is believed that such low anisotropy regions reverse their magnetization at a much lower reversal field than the rest of the material with a larger anisotropy. Such clusters/grains cause recording performance deterioration, such as adjacent track erasure and dc noise. Therefore, the observation of clusters that reverse at very low reversal fields (nucleation sites, NS) could give information on the noise and the adjacent track erasure. Potentially, the observed clusters could also provide information on the SF. In this paper, we study the reversal of nucleation sites in granular perpendicular media based on a magnetic force microscope (MFM) methodology and validate the observations with high resolution cross-section transmission electron microscopy (HRTEM) measurements. Samples, wherein a high anisotropy CoPt layer was introduced to control the NS or SF in a systematic way, were evaluated by MFM, TEM, and magnetometry. The magnetic properties indicated that the thickness of the CoPt layer results in an increase of nucleation sites. TEM measurements indicated a correlation between the thickness of CoPt layer and the stacking fault density. A clear correlation was also observed between the MFM results, TEM observations, and the coercivity and nucleation field of the samples, validating the effectiveness of the proposed method in evaluating the nucleation sites which potentially arise from stacking faults.

  2. Subsystem fault tolerance with the Bacon-Shor code

    E-Print Network [OSTI]

    Panos Aliferis; Andrew W. Cross

    2007-03-29

    We discuss how the presence of gauge sub-systems in the Bacon-Shor code [D. Bacon, Phys. Rev. A 73, 012340 (2006)] leads to remarkably simple and efficient methods for fault-tolerant error correction (FTEC). Most notably, FTEC does not require entangled ancillary states and it can be implemented with nearest-neighbor two-qubit measurements. By using these methods, we prove a lower bound on the quantum accuracy threshold, 1.94 \\times 10^{-4} for adversarial stochastic noise, that improves previous lower bounds by nearly an order of magnitude.

  3. A Fault Oblivious Extreme-Scale Execution Environment

    SciTech Connect (OSTI)

    McKie, Jim

    2014-11-20

    The FOX project, funded under the ASCR X-stack I program, developed systems software and runtime libraries for a new approach to the data and work distribution for massively parallel, fault oblivious application execution. Our work was motivated by the premise that exascale computing systems will provide a thousand-fold increase in parallelism and a proportional increase in failure rate relative to today’s machines. To deliver the capability of exascale hardware, the systems software must provide the infrastructure to support existing applications while simultaneously enabling efficient execution of new programming models that naturally express dynamic, adaptive, irregular computation; coupled simulations; and massive data analysis in a highly unreliable hardware environment with billions of threads of execution. Our OS research has prototyped new methods to provide efficient resource sharing, synchronization, and protection in a many-core compute node. We have experimented with alternative task/dataflow programming models and shown scalability in some cases to hundreds of thousands of cores. Much of our software is in active development through open source projects. Concepts from FOX are being pursued in next generation exascale operating systems. Our OS work focused on adaptive, application tailored OS services optimized for multi ? many core processors. We developed a new operating system NIX that supports role-based allocation of cores to processes which was released to open source. We contributed to the IBM FusedOS project, which promoted the concept of latency-optimized and throughput-optimized cores. We built a task queue library based on distributed, fault tolerant key-value store and identified scaling issues. A second fault tolerant task parallel library was developed, based on the Linda tuple space model, that used low level interconnect primitives for optimized communication. We designed fault tolerance mechanisms for task parallel computations employing work stealing for load balancing that scaled to the largest existing supercomputers. Finally, we implemented the Elastic Building Blocks runtime, a library to manage object-oriented distributed software components. To support the research, we won two INCITE awards for time on Intrepid (BG/P) and Mira (BG/Q). Much of our work has had impact in the OS and runtime community through the ASCR Exascale OS/R workshop and report, leading to the research agenda of the Exascale OS/R program. Our project was, however, also affected by attrition of multiple PIs. While the PIs continued to participate and offer guidance as time permitted, losing these key individuals was unfortunate both for the project and for the DOE HPC community.

  4. Stacking fault induced tunnel barrier in platelet graphite nanofiber

    SciTech Connect (OSTI)

    Lan, Yann-Wen, E-mail: chiidong@phys.sinica.edu.tw, E-mail: ywlan@phys.sinica.edu.tw; Chang, Yuan-Chih; Chang, Chia-Seng; Chen, Chii-Dong, E-mail: chiidong@phys.sinica.edu.tw, E-mail: ywlan@phys.sinica.edu.tw [Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China); Chang, Wen-Hao [Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China); Graduate Institute of Opto-Mechatronics, National Chung Cheng University, Chia-Yi 62102, Taiwan (China); Li, Yuan-Yao [Graduate Institute of Opto-Mechatronics, National Chung Cheng University, Chia-Yi 62102, Taiwan (China)

    2014-09-08

    A correlation study using image inspection and electrical characterization of platelet graphite nanofiber devices is conducted. Close transmission electron microscopy and diffraction pattern inspection reveal layers with inflection angles appearing in otherwise perfectly stacked graphene platelets, separating nanofibers into two domains. Electrical measurement gives a stability diagram consisting of alternating small-large Coulomb blockade diamonds, suggesting that there are two charging islands coupled together through a tunnel junction. Based on these two findings, we propose that a stacking fault can behave as a tunnel barrier for conducting electrons and is responsible for the observed double-island single electron transistor characteristics.

  5. Waste Management Fault Tree Data Bank (WM): 1992 status report

    SciTech Connect (OSTI)

    Baughman, D.F.; Hang, P.; Townsend, C.S.

    1993-08-30

    The Risk Assessment Methodology Group (RAM) of the Nuclear Process Safety Research Section (NPSR) maintains a compilation of incidents that have occurred in the Waste Management facilities. The Waste Management Fault Tree Data Bank (WM) contains more than 35,000 entries ranging from minor equipment malfunctions to incidents with significant potential for injury or contamination of personnel. This report documents the status of the WM data bank including: availability, training, source of data, search options, and usage, to which these data have been applied. Periodic updates to this memorandum are planned as additional data or applications are acquired.

  6. Directions to the Ecole Normale Suprieure de Lyon The Ecole Normale Suprieure de Lyon

    E-Print Network [OSTI]

    Dauxois, Thierry

    Directions to the Ecole Normale Supérieure de Lyon The Ecole Normale Supérieure de Lyon is located in Gerland, a neighborhood in the southern part of Lyon, not far from the Rhône river and the Halle Tony. How to get to l'ENS-Lyon ... #12;· From Lyon-Saint Exupéry (Satolas) airport Every 20 min, a shuttle

  7. Award ER25750: Coordinated Infrastructure for Fault Tolerance Systems Indiana University Final Report

    SciTech Connect (OSTI)

    Lumsdaine, Andrew

    2013-03-08

    The main purpose of the Coordinated Infrastructure for Fault Tolerance in Systems initiative has been to conduct research with a goal of providing end-to-end fault tolerance on a systemwide basis for applications and other system software. While fault tolerance has been an integral part of most high-performance computing (HPC) system software developed over the past decade, it has been treated mostly as a collection of isolated stovepipes. Visibility and response to faults has typically been limited to the particular hardware and software subsystems in which they are initially observed. Little fault information is shared across subsystems, allowing little flexibility or control on a system-wide basis, making it practically impossible to provide cohesive end-to-end fault tolerance in support of scientific applications. As an example, consider faults such as communication link failures that can be seen by a network library but are not directly visible to the job scheduler, or consider faults related to node failures that can be detected by system monitoring software but are not inherently visible to the resource manager. If information about such faults could be shared by the network libraries or monitoring software, then other system software, such as a resource manager or job scheduler, could ensure that failed nodes or failed network links were excluded from further job allocations and that further diagnosis could be performed. As a founding member and one of the lead developers of the Open MPI project, our efforts over the course of this project have been focused on making Open MPI more robust to failures by supporting various fault tolerance techniques, and using fault information exchange and coordination between MPI and the HPC system software stack?from the application, numeric libraries, and programming language runtime to other common system components such as jobs schedulers, resource managers, and monitoring tools.

  8. Part I 7-Minute Questions 1. A tennis ball of mass m is held just above a basketball of mass M ! m and

    E-Print Network [OSTI]

    Yavuz, Deniz

    does the tennis ball rebound? 2. A copper wire has length L, mass M, cross sectional area A, and Young, but the center point is fixed in space. a. Find the quantum mechanically allowed energy levels of this rigid rotor. b. What are the degeneracies of the energy levels? 6. A beam of particles of mass µ and momentum

  9. Merguerian, Charles, 1996b, Evidence for post-glacial surface faulting in New York City. The dynamic relationship between earthquakes and movement on reactivated faults

    E-Print Network [OSTI]

    Merguerian, Charles

    Merguerian, Charles, 1996b, Evidence for post-glacial surface faulting in New York City in New York City (abs.): Geological Society of America Abstracts with Programs, v. 28, no. 3, p. 81

  10. Normal force controlled rheology for thermoreversible gels

    E-Print Network [OSTI]

    Bosi Mao; Thibaut Divoux; Patrick Snabre

    2015-08-07

    A wide range of thermoreversible gels are prepared by cooling down to ambient temperature hot aqueous solutions of polymers. During the sol-gel transition, such soft solids may experience a volume contraction leading to experimental issues regarding rheological measurements such as the stress-induced release of solvent, and the partial loss of contact between the sample and the shear cell. In this article, we revisit the formation of thermoreversible gels through a series of benchmark experiments conducted on agar gels in a plate-plate geometry. Monitoring the gelation with a constant gap results in an artificial drift of the gel elastic modulus $G'$ because of the sample contraction. We show that maintaining a constant normal force equals to zero instead of a constant gap allows $G'$ to reach a plateau as the gap variation compensates the sample contraction. The latter method provides a way to measure more reliably the gel linear properties with either rough or smooth boundary conditions, and allows us to quantify the sample contraction. Furthermore, we also unravel two subtle artifacts associated with metallic boundary conditions that may impact rheological measurements during the early stage of the gelation. We show that the slow oxidation of the plate by the solution and/or the presence of an oil layer around the sample, that is traditionally used to prevent evaporation, may both lead to a premature and artificial growth of $G'$ which should not be misinterpreted as the formation of a pre-gel. Finally, we illustrate the relevance of the controlled normal force protocol, by investigating the influence of thermal history on the mechanical properties of agar gels. Our work offers an extensive review of the artifacts associated with the rheology of thermoreversible gels and paves the way for a more systematic use of normal force controlled rheology.

  11. ARM - Measurement - Shortwave broadband direct normal irradiance

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska Outreach Homepolarization ARM Data Discoverydiffusedirect normal

  12. Dielectric and photocatalytic properties of sulfur doped TiO{sub 2} nanoparticles prepared by ball milling

    SciTech Connect (OSTI)

    Jalalah, Mohammed [Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Electrical Engineering Department, College of Engineering, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Faisal, M. [Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Bouzid, Houcine [Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Department of Physics, Faculty of Sciences and Arts, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Ismail, Adel A., E-mail: adelali141@yahoo.com [Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Nanostructured and Nanotechnology Materials Division, Central Metallurgical R and D Institute, CMRDI, P.O. Box 87, Helwan, 11421, Cairo (Egypt); Chemistry Department, Science and Art at Sharurah, Najran University (Saudi Arabia); Al-Sayari, Saleh A. [Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran, 11001 (Saudi Arabia); Chemistry Department, Science and Art at Sharurah, Najran University (Saudi Arabia)

    2013-09-01

    Graphical abstract: - Highlights: • Designing of visible light responsive photocatalyst utilizing ball milling. • Sulphur used as dopant in commercial TiO{sub 2} P25 at different atomic percentage. • S doping resulted in an intense increase in absorption in the visible light region. • Newly design photocatalyst exhibited excellent photocatalytic performance. • 0.11 at.% S-doped TiO{sub 2} shows 3-times higher activity than that of TiO{sub 2} P25. - Abstract: Sulfur (S) doped commercial TiO{sub 2} P-25 has been achieved by changing the amount of thiourea using ball milling technique. The results of XRD clearly reveal biphasial anatase and rutile mixtures for all prepared samples and doping of S does not change the morphology of the TiO{sub 2}. The optical absorption edge of S-doped TiO{sub 2} was red shifted with indirect bandgap energy of 2.8 eV. The dielectric studies confirm that the dielectric constant of TiO{sub 2} increases after doping, however it becomes more conductive. Newly designed S-doped TiO{sub 2} photocatalysts exhibited excellent photocatalytic performance for the degradation of methylene blue (MB) under visible light. The overall photocatalytic activity of 0.11 at.% S-doped TiO{sub 2} was significantly 3-times higher than that of commercial TiO{sub 2} P-25 and complete degradation of MB has taken place after 90 min of irradiation under visible light while only 35% dye degraded when the reaction has been carried out in the presence of undoped TiO{sub 2}.

  13. Fault-tolerant Holonomic Quantum Computation in Surface Codes

    E-Print Network [OSTI]

    Yi-Cong Zheng; Todd A. Brun

    2015-02-04

    We show that universal holonomic quantum computation (HQC) can be achieved fault-tolerantly by adiabatically deforming the gapped stabilizer Hamiltonian of the surface code, where quantum information is encoded in the degenerate ground space of the system Hamiltonian. We explicitly propose procedures to perform each logical operation, including logical state initialization, logical state measurement, logical CNOT, state injection and distillation,etc. In particular, adiabatic braiding of different types of holes on the surface leads to a topologically protected, non-Abelian geometric logical CNOT. Throughout the computation, quantum information is protected from both small perturbations and low weight thermal excitations by a constant energy gap, and is independent of the system size. Also the Hamiltonian terms have weight at most four during the whole process. The effect of thermal error propagation is considered during the adiabatic code deformation. With the help of active error correction, this scheme is fault-tolerant, in the sense that the computation time can be arbitrarily long for large enough lattice size. It is shown that the frequency of error correction and the physical resources needed can be greatly reduced by the constant energy gap.

  14. Mobility and coalescence of stacking fault tetrahedra in Cu

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

    Martínez, Enrique; Uberuaga, Blas P.

    2015-03-13

    Stacking fault tetrahedra (SFTs) are ubiquitous defects in face-centered cubic metals. They are produced during cold work plastic deformation, quenching experiments or under irradiation. From a dislocation point of view, the SFTs are comprised of a set of stair-rod dislocations at the (110) edges of a tetrahedron bounding triangular stacking faults. These defects are extremely stable, increasing their energetic stability as they grow in size. At the sizes visible within transmission electron microscope they appear nearly immobile. Contrary to common belief, we show in this report, using a combination of molecular dynamics and temperature accelerated dynamics, how small SFTs canmore »diffuse by temporarily disrupting their structure through activated thermal events. More over, we demonstrate that the diffusivity of defective SFTs is several orders of magnitude higher than perfect SFTs, and can be even higher than isolated vacancies. Finally, we show how SFTs can coalesce, forming a larger defect in what is a new mechanism for the growth of these omnipresent defects.« less

  15. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, H.J.

    1998-03-10

    A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.

  16. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, Heinrich J. (Los Alamos, NM)

    1998-01-01

    A solid-state circuit breaker and current limiter for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time.

  17. Pipeline coating impedance effects on powerline fault current coupling

    SciTech Connect (OSTI)

    Dabkowski, J.

    1989-12-01

    Prior research leading to the development of predictive electromagnetic coupling computer codes has shown that the coating conductance is the principal factor in determining the response of a pipeline to magnetic induction from an overhead power transmission line. Under power line fault conditions, a high voltage may stress the coating causing a significant change in its conductance, and hence, the coupling response. Based upon laboratory experimentation and analysis, a model has been developed which allows prediction of the modified coating characteristics when subjected to high voltage during fault situations. Another program objective was the investigation of a method to determine the high voltage behavior of an existing coating from low voltage in situ field measurements. Such a method appeared conceptually feasible for non-porous coatings whose conductance is primarily a result of current leakage through existing holidays. However, limited testing has shown that difficulties in determining the steel-electrolyte capacitance limit the application of the method Methods for field measurement of the pipeline coating conductance were also studied for both dc ad ac signal excitation. Ac techniques offer the advantage that cathodic protection current interruption is not required, thus eliminating depolarization effects. However, ac field measurement techniques need additional refinement before these methods can be generally applied. 53 figs.

  18. Fault Detection Likelihood of Test Sequence Length Fevzi Belli, Michael Linschulte

    E-Print Network [OSTI]

    Belli, Fevzi

    accepted hypothesis is that the longer the test sequences, the higher the chances to detect faults. However the length of test sequences. · For our experiments the length of sequences varied from 2 to 4, definingFault Detection Likelihood of Test Sequence Length Fevzi Belli, Michael Linschulte University

  19. Test Suite Reduction for Fault Detection and Localization: A Combined Approach

    E-Print Network [OSTI]

    Beszedes, Árpád

    detection capability of a test suite in general is hard, and the mostly accepted method is to use different from fault localization viewpoint. Based on this observation, we defined a test reduction methodTest Suite Reduction for Fault Detection and Localization: A Combined Approach László Vidács

  20. Machine-learning Based Automated Fault Detection in Seismic Chiyuan Zhang and Charlie Frogner (MIT),

    E-Print Network [OSTI]

    Poggio, Tomaso

    Machine-learning Based Automated Fault Detection in Seismic Traces Chiyuan Zhang and Charlie no seismic data has been migrated. Our novel method is based on machine learning tech- niques and can a machine learning approach: We generate a set of seismic traces from velocity models containing faults

  1. Faulting and hydration of the Juan de Fuca plate system Mladen R. Nedimovi a,c,

    E-Print Network [OSTI]

    Bohnenstiehl, Delwayne

    Available online xxxx Editor: R.D. van der Hilst Keywords: Juan de Fuca plate system seismic reflection imaging faulting hydration earthquakes Multichannel seismic observations provide the first direct images faulting within this young and sediment insulated oceanic plate is primarily limited to approximately Moho

  2. 1 Assessing the work budget and efficiency of fault systems 2 using mechanical models

    E-Print Network [OSTI]

    Cooke, Michele

    strain energy of the faulted 19 area (Wint), at a ``cost'' of work done against friction and gravity (and propagation and 20 seismic energy, where applicable). Calculations of minimum work deformation match 21 of fault systems. Furthermore, calculation of potential 24 seismic energy release can provide an upper

  3. REPLICATION AND FAULT-TOLERANCE IN THE ISIS SYSTEM t Kenneth P. Birman

    E-Print Network [OSTI]

    Keinan, Alon

    REPLICATION AND FAULT-TOLERANCE IN THE ISIS SYSTEM t Kenneth P. Birman Department of Computer Science Cornell University, Ithaca, New York ABSTRACT The ISIS system transforms abstract type. The performance of distributed fault-tolerant services runnin8 on this initial version of ISIS is found

  4. Proactive Service Migration for Long-Running Byzantine Fault Tolerant Systems Wenbing Zhao and Honglei Zhang

    E-Print Network [OSTI]

    Zhao, Wenbing

    Proactive Service Migration for Long-Running Byzantine Fault Tolerant Systems Wenbing Zhao scheme based on service migration for long-running Byzantine fault tolerant systems. Proactive recovery threats from malicious adversaries. The primary benefit of our proactive recovery scheme is a reduced

  5. Oil and Gas CDT Predicting fault permeability at depth: incorporating natural

    E-Print Network [OSTI]

    Henderson, Gideon

    Oil and Gas CDT Predicting fault permeability at depth: incorporating natural permeability controls on fluid flow in oil and gas reservoirs. Fault zones are composed of many deformation elements will receive 20 weeks bespoke, residential training of broad relevance to the oil and gas industry: 10 weeks

  6. Morphology, displacement, and slip rates along the North Anatolian Fault, Turkey

    E-Print Network [OSTI]

    Hubert-Ferrari, Aurélia

    Morphology, displacement, and slip rates along the North Anatolian Fault, Turkey Aure´lia Hubert, Ayazaga, Istanbul, Turkey Received 29 January 2001; revised 8 January 2002; accepted 13 January 2002 the central and eastern North Anatolian Fault (NAF) in Turkey. The NAF total displacement is reevaluated using

  7. Aalborg Universitet Joint Parametric Fault Diagnosis and State Estimation Using KF-ML Method

    E-Print Network [OSTI]

    Yang, Zhenyu

    -ML Method Zhen Sun Zhenyu Yang Department of Energy Technology, Aalborg University, 6700 Esbjerg, DenmarkAalborg Universitet Joint Parametric Fault Diagnosis and State Estimation Using KF-ML Method Sun University Citation for published version (APA): Sun, Z., & Yang, Z. (2014). Joint Parametric Fault Diagnosis

  8. Evidence for a Supershear Transient during the 2002 Denali Fault Earthquake

    E-Print Network [OSTI]

    Carlson, Jean

    Evidence for a Supershear Transient during the 2002 Denali Fault Earthquake Eric M. Dunham subshear slip pulse on the fault. Introduction On November 3, 2002, a Mw 7.9 earthquake shook central than FN. This is not typical of large strike-slip earthquakes, as discussed by Archuleta and Hartzell

  9. A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic Generator

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic database containing sample data is used for simulation purposes. Keywords--Photovoltaic generator, SVR, k-NNR, reversed polarity fault, diagnosis, prognosis. NOMENCLATURE PV = Photovoltaic; SVM = Support Vector

  10. A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator Wail Rezgui observations distributed over classes is used for simulation purposes. Keywords--Photovoltaic generator, SVM, k-NN, short-circuit fault, smart classification, linear programming. NOMENCLATURE PV = Photovoltaic; SVM

  11. Limitations for detecting small-scale faults using the coherency analysis of seismic data 

    E-Print Network [OSTI]

    Barnett, David Benjamin

    2006-08-16

    be distinguished from noise. Results from application of the coherency analysis were applied to the characterization of a very deep fault and fracture system imaged by a field seismic data set. A series of reverse and strike-slip faults were detected and mapped...

  12. Fault Evolution in Photovoltaic Array During Night-to-Day Transition

    E-Print Network [OSTI]

    Lehman, Brad

    Fault Evolution in Photovoltaic Array During Night-to-Day Transition Ye Zhao, Brad Lehman Abstract-- This paper focuses on fault evolution in a photovoltaic array during night-to-day transition in the PV array and become a potential hazard for system efficiency and reliability. Keywords - photovoltaic

  13. Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation

    E-Print Network [OSTI]

    Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation Robert C slip-weakening behavior is specified, and the off-fault material is described using an elastic-plastic poroelastoplastic materials with and without plastic dilation. During nondilatant undrained response near

  14. Interplay between faulting and base level in the development of Himalayan frontal fold topography

    E-Print Network [OSTI]

    Interplay between faulting and base level in the development of Himalayan frontal fold topography] Fold topography preserves a potentially accessible record of the structure and evolution of an underlying thrust fault system, provided we understand the factors that shape that topography. Here we

  15. A Petri Net Model for Secure and Fault-Tolerant Cloud-Based Information Storage

    E-Print Network [OSTI]

    Xu, Haiping

    333 A Petri Net Model for Secure and Fault-Tolerant Cloud-Based Information Storage Daniel F. Fitch, however, with data security, reliability, and availability in the cloud. In this paper, we address these concerns by proposing a novel security mechanism for secure and fault-tolerant cloud-based information

  16. DFIG Driven Wind Turbine Grid Fault-Tolerance Using High-Order Sliding Mode Control

    E-Print Network [OSTI]

    Boyer, Edmond

    DFIG Driven Wind Turbine Grid Fault-Tolerance Using High-Order Sliding Mode Control Mohamed fault-tolerance of a doubly-fed induction generator- based wind turbine using high-order sliding mode mechanical stress on the drive train). Simulations using the NREL FAST code on a 1.5-MW wind turbine

  17. Arc Fault Signal Detection -Fourier Transformation vs. Wavelet Decomposition Techniques using Synthesized Data

    E-Print Network [OSTI]

    for reliable and safe system operation and is a prerequisite for widespread adoption of PV generation systems Abstract -- Arc faults are a significant reliability and safety concern for photovoltaic (PV) systems is that arc faults in the PV systems do not happen predictably, and depending on the location of the sensors

  18. Evaluation for Intra-Word Faults in Word-Oriented RAMs Said Hamdioui1,C

    E-Print Network [OSTI]

    memory cells (i.e., coupling faults (CFs)). In addition faults between cells can be further divided SAMopt: an optimized version of March SAM assuming that intra-word CFs can only occur between physically of the above intra-word CFs also detects intra-word state CF, incorrect read CF, and read destructive CF. Table

  19. Programming Language Support for Writing FaultTolerant Distributed Software \\Lambda

    E-Print Network [OSTI]

    Schlichting, Richard D.

    Programming Language Support for Writing Fault­Tolerant Distributed Software \\Lambda Richard D. Schlichting and Vicraj T. Thomas Abstract Good programming language support can simplify the task of writing a general high­level distributed programming language is augmented with mechanisms for fault tolerance

  20. A Probability Extension of PCA to Detect and Diagnose Sensor Faults in Air Handling Units 

    E-Print Network [OSTI]

    Li, Z.

    2011-01-01

    Due to sensor faults, it is a challenge to successfully detect and diagnose component faults in HVAC systems. The Principal Component Analysis (PCA) method has become a popular method to tackle this problem in recent years, but PCA is not capable...

  1. Fault detection and isolation in aircraft gas turbine engines. Part 1: underlying concept

    E-Print Network [OSTI]

    Ray, Asok

    307 Fault detection and isolation in aircraft gas turbine engines. Part 1: underlying concept: aircraft propulsion, gas turbine engines, fault detection and isolation, statistical pattern recognition 1 INTRODUCTION Performance and reliability of aircraft gas turbine engines gradually deteriorate over the service

  2. Western limits of the Seattle fault zone and its interaction with the Olympic Peninsula, Washington

    E-Print Network [OSTI]

    Boise State University

    of the Tacoma Basin to include the previously termed Dewatto basin and show that the Tacoma fault, the southern- mation of the Olympic Massif and today accommodates north-directed motion. The Tacoma and Dewatto faults margin of the Tacoma Basin, and the Saddle Mountain deformation zone forms the northwestern boundary

  3. Resistive Bridge Fault Modeling,Simulationand Test Generation Vijay R. Sar-Dessai

    E-Print Network [OSTI]

    Walker, Duncan M. "Hank"

    Resistive Bridge Fault Modeling,Simulationand Test Generation Vijay R. Sar-Dessai Intel Corporation.sar-dessai@intel.com Abstract In this work' we develop models of resistive bridging faults and study thefault coverage on ISCAS85 circuits of different test sets using resistive and zero-ohm bridges at different supply voltages

  4. System for detecting and limiting electrical ground faults within electrical devices

    DOE Patents [OSTI]

    Gaubatz, Donald C. (Cupertino, CA)

    1990-01-01

    An electrical ground fault detection and limitation system for employment with a nuclear reactor utilizing a liquid metal coolant. Elongate electromagnetic pumps submerged within the liquid metal coolant and electrical support equipment experiencing an insulation breakdown occasion the development of electrical ground fault current. Without some form of detection and control, these currents may build to damaging power levels to expose the pump drive components to liquid metal coolant such as sodium with resultant undesirable secondary effects. Such electrical ground fault currents are detected and controlled through the employment of an isolated power input to the pumps and with the use of a ground fault control conductor providing a direct return path from the affected components to the power source. By incorporating a resistance arrangement with the ground fault control conductor, the amount of fault current permitted to flow may be regulated to the extent that the reactor may remain in operation until maintenance may be performed, notwithstanding the existence of the fault. Monitors such as synchronous demodulators may be employed to identify and evaluate fault currents for each phase of a polyphase power, and control input to the submerged pump and associated support equipment.

  5. Electrical Simulations of Series and Parallel PV Arc-Faults Jack Flicker and Jay Johnson

    E-Print Network [OSTI]

    Electrical Simulations of Series and Parallel PV Arc-Faults Jack Flicker and Jay Johnson Sandia residential and commercial rooftop fires. The National Electrical Code® (NEC) added section 690.11 to mitigate the electrical behavior of the PV system during series and parallel arc-faults to (a) understand the arcing power

  6. A CONTROLLER FOR HVAC SYSTEMS WITH FAULT DETECTION CAPABILITIES BASED ON SIMULATION MODELS

    E-Print Network [OSTI]

    operating conditions change. Poor control performance can lead to occupant discomfort in a building, greater it is controlling. Faults that lead to performance deterioration or a change in system behavior are often masked. In addition, the model acts as a reference of correct behavior, which facilitates the detection of faults

  7. Voltage grid support of DFIG wind turbines during grid faults Anca D. Hansen1

    E-Print Network [OSTI]

    Voltage grid support of DFIG wind turbines during grid faults Anca D. Hansen1 , Gabriele Michalke2) wind turbines address primarily the design of DFIG wind turbine control with special focus on power strategy for DFIG wind turbines, which enhances the fault ride-through capability of DFIG wind turbines

  8. Aalborg Universitet Negative Sequence Controllers to Reduce Power Oscillations During Electric Faults in

    E-Print Network [OSTI]

    Chaudhary, Sanjay

    -HVDC transmission connecting an offshore wind power plant to an onshore grid. To develop a PSCAD/EMTDC simulation Faults in the Offshore Wind Power Grid Chaudhary, Sanjay Kumar Publication date: 2010 Document Version During Electric Faults in the Offshore Wind Power Grid. Poster session presented at IEEE PES General

  9. ECE 586 Fault Detection in Digital Circuits Lecture 19 Design for Testability I

    E-Print Network [OSTI]

    Wang, Jia

    be converted into costs associated with the testing process. Cost of test pattern generation. Cost of fault simulation and generation of fault location information. Cost of test equipment. Cost of testing process;Motivation Test generation is complicated. Test complexity can be converted into costs associated

  10. A Framework for Efficient Evaluation of the Fault Tolerance of Deduplicated Storage Systems

    E-Print Network [OSTI]

    Sanders, William H.

    A Framework for Efficient Evaluation of the Fault Tolerance of Deduplicated Storage Systems Eric- lyzing the fault tolerance of deduplicated storage systems. We discuss methods for building models of deduplicated storage systems by analyzing empirical data on a file category basis. We provide an algorithm

  11. Fault Sensitivity Analysis and Reliability Enhancement of Analog-to-Digital Converters

    E-Print Network [OSTI]

    Koren, Israel

    1 Fault Sensitivity Analysis and Reliability Enhancement of Analog-to-Digital Converters Mandeep. The latter also enables an early analysis in the design phase thus eliminating costly redesign. Two types. This type of faults has been known to account for 85% or more failures in digital systems [1], [2]. Since

  12. A self-reconfigurable and fault-tolerant induction motor control architecture

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    conditioning/heat pumps, engine cooling fans, and electric vehicles. This is especially important in high industrial systems the unit cost is a paramount issue. Hence cheap fault-tolerant control has become an important industrial research area. The objective is to give solutions that provide fault

  13. Modelling the reorientation of sea-ice faults as the wind changes direction

    E-Print Network [OSTI]

    Feltham, Daniel

    Modelling the reorientation of sea-ice faults as the wind changes direction Alexander V. WILCHINSKY-1290, USA ABSTRACT. A discrete-element model of sea ice is used to study how a 908 change in wind direction alters the pattern of faults generated through mechanical failure of the ice. The sea-ice domain is 400

  14. Stress evolution and fault interactions before and after the 2008 Great Wenchuan earthquake

    E-Print Network [OSTI]

    Liu, Mian

    Stress evolution and fault interactions before and after the 2008 Great Wenchuan earthquake Gang Keywords: Wenchuan earthquake Coulomb stress Fault interaction Viscoelastoplastic Finite element modeling,000 lives and devastating many cities in the Sichuan province, China. The coseismic stress changes due

  15. Stress evolution of the San Andreas fault system: Recurrence interval versus locking depth

    E-Print Network [OSTI]

    Smith-Konter, Bridget

    Stress evolution of the San Andreas fault system: Recurrence interval versus locking depth Bridget by stress that has accumulated in the upper locked portion of the crust. The present-day stress accumulation rate on any given fault segment is fairly well resolved by current geodetic measurements. Model stress

  16. Stress Drop during Earthquakes: Effect of Fault Roughness Scaling by Thibault Candela, Franois Renard,*

    E-Print Network [OSTI]

    Schmittbuhl, Jean

    Stress Drop during Earthquakes: Effect of Fault Roughness Scaling by Thibault Candela, François parameter of static stress drop during an earthquake is related to the scaling properties of the fault and focusing on elastic deformation of the topography, which is the dominant mode at large scales, the stress

  17. Journal of Power Sources 165 (2007) 267278 A Bayesian network fault diagnostic system for proton

    E-Print Network [OSTI]

    Simões, Marcelo Godoy

    2007-01-01

    considers the effects of different types of faults on a proton exchange membrane fuel cell model (PEMFC­probabilistic structure) is used to execute the diagnosis of fault causes in the PEMFC model based on the effects observed in proton exchange membrane fuel cell (PEMFC) technology have made them commercially avail- able

  18. Reliability analysis of static and dynamic fault-tolerant systems subject to probabilistic

    E-Print Network [OSTI]

    Sun, Yan Lindsay

    Reliability analysis of static and dynamic fault-tolerant systems subject to probabilistic common Dartmouth, Massachusetts, USA 2 University of Rhode Island, Kingston, Rhode Island, USA 3 Applied Materials for publication on 8 October 2009. DOI: 10.1243/1748006XJRR260 Abstract: Fault-tolerant systems designed

  19. A frequency weighted approach to robust fault reconstruction and F. Crusca

    E-Print Network [OSTI]

    Aldeen, Mohammad

    is based on shaping the map from disturbance inputs to the fault es- timation error through frequency, these disturbances are assumed to be the output of a filter (with the previously mentioned frequency characteristicsA frequency weighted approach to robust fault reconstruction C.P. Tan and F. Crusca and M. Aldeen

  20. Effect of faulting on ground-water movement in the Death Valley region, Nevada and California

    SciTech Connect (OSTI)

    Faunt, C.C.

    1997-12-31

    This study characterizes the hydrogeologic system of the Death Valley region, an area covering approximately 100,000 square kilometers. The study also characterizes the effects of faults on ground-water movement in the Death Valley region by synthesizing crustal stress, fracture mechanics,a nd structural geologic data. The geologic conditions are typical of the Basin and Range Province; a variety of sedimentary and igneous intrusive and extrusive rocks have been subjected to both compressional and extensional deformation. Faulting and associated fracturing is pervasive and greatly affects ground-water flow patterns. Faults may become preferred conduits or barriers to flow depending on whether they are in relative tension, compression, or shear and other factors such as the degree of dislocations of geologic units caused by faulting, the rock types involved, the fault zone materials, and the depth below the surface. The current crustal stress field was combined with fault orientations to predict potential effects of faults on the regional ground-water flow regime. Numerous examples of fault-controlled ground-water flow exist within the study area. Hydrologic data provided an independent method for checking some of the assumptions concerning preferential flow paths. 97 refs., 20 figs., 5 tabs.