National Library of Energy BETA

Sample records for folder trigger letter

  1. Managing Google Apps Spam Folder.docx Revision 1 How To Manage Email Flagged As Spam By VT Google Apps

    E-Print Network [OSTI]

    Hopkins, William A.

    just right click on the "Spam" folder and select "Delete All". Note that Google automatically deletes Spam after 30 days to keep the folder from growing out of control. If you find a false positive.gmail.com using your preferred browser. 2. In the "Username" type in YourPIDHere@vt.edu without the quotes

  2. Triggering Klystrons

    SciTech Connect (OSTI)

    Stefan, Kelton D.; /Purdue U. /SLAC

    2010-08-25

    To determine if klystrons will perform to the specifications of the LCLS (Linac Coherent Light Source) project, a new digital trigger controller is needed for the Klystron/Microwave Department Test Laboratory. The controller needed to be programmed and Windows based user interface software needed to be written to interface with the device over a USB (Universal Serial Bus). Programming the device consisted of writing logic in VHDL (VHSIC (Very High Speed Integrated Circuits) hardware description language), and the Windows interface software was written in C++. Xilinx ISE (Integrated Software Environment) was used to compile the VHDL code and program the device, and Microsoft Visual Studio 2005 was used to compile the C++ based Windows software. The device was programmed in such a way as to easily allow read/write operations to it using a simple addressing model, and Windows software was developed to interface with the device over a USB connection. A method of setting configuration registers in the trigger device is absolutely necessary to the development of a new triggering system, and the method developed will fulfill this need adequately. More work is needed before the new trigger system is ready for use. The configuration registers in the device need to be fully integrated with the logic that will generate the RF signals, and this system will need to be tested extensively to determine if it meets the requirements for low noise trigger outputs.

  3. Steamboat-Springs:Internet:Internet Applications:Outlook Express 4.5 Folder:Outlook Express Temp:final-masanori.doc 1

    E-Print Network [OSTI]

    Fischer, Gerhard

    Steamboat-Springs:Internet:Internet Applications:Outlook Express 4.5 Folder:Outlook Express Temp for Collaborative, Evolutionary Design____________11 #12;Steamboat-Springs:Internet:Internet Applications

  4. Clearing Cache in a Web Browser Web browsers store the contents of pages viewed in a folder. These copies may interfere later

    E-Print Network [OSTI]

    Thomas, David D.

    Clearing Cache in a Web Browser Web browsers store the contents of pages viewed in a folder from the Web site. Internet Explorer 7 Click on the Tools icon (usually found in the upper right corner. Select a `Time range to clear'. Then click Clear Now. If you have a different Web browser on your

  5. Exam 1 Advisory Letter Grades

    E-Print Network [OSTI]

    Kelly T Beranger

    2009-02-12

    MA 16200. Exam 1 Advisory Letter Grades. Spring 09. These advisory letter grades are estimates only and have no official standing. The actual letter grades will ...

  6. Microfabricated triggered vacuum switch

    DOE Patents [OSTI]

    Roesler, Alexander W. (Tijeras, NM); Schare, Joshua M. (Albuquerque, NM); Bunch, Kyle (Albuquerque, NM)

    2010-05-11

    A microfabricated vacuum switch is disclosed which includes a substrate upon which an anode, cathode and trigger electrode are located. A cover is sealed over the substrate under vacuum to complete the vacuum switch. In some embodiments of the present invention, a metal cover can be used in place of the trigger electrode on the substrate. Materials used for the vacuum switch are compatible with high vacuum, relatively high temperature processing. These materials include molybdenum, niobium, copper, tungsten, aluminum and alloys thereof for the anode and cathode. Carbon in the form of graphitic carbon, a diamond-like material, or carbon nanotubes can be used in the trigger electrode. Channels can be optionally formed in the substrate to mitigate against surface breakdown.

  7. GeophysicalResearchLetters RESEARCH LETTER

    E-Print Network [OSTI]

    Gordon, Arnold L.

    GeophysicalResearchLetters RESEARCH LETTER 10.1002/2014GL061661 Key Points: · The 1934 drought), The worst North American drought year of the last millennium: 1934, Geophys. Res. Lett., 41, doi:10 North American drought year of the last millennium: 1934 Benjamin I. Cook1,2 , Richard Seager2

  8. GeophysicalResearchLetters RESEARCH LETTER

    E-Print Network [OSTI]

    GeophysicalResearchLetters RESEARCH LETTER 10.1002/2014GL061661 Key Points: · The 1934 drought), The worst North American drought year of the last millennium: 1934, Geophys. Res. Lett., 41, 7298­7305, doi Published online 18 OCT 2014 The worst North American drought year of the last millennium: 1934 Benjamin I

  9. Triggered plasma opening switch

    DOE Patents [OSTI]

    Mendel, Clifford W. (Albuquerque, NM)

    1988-01-01

    A triggerable opening switch for a very high voltage and current pulse includes a transmission line extending from a source to a load and having an intermediate switch section including a plasma for conducting electrons between transmission line conductors and a magnetic field for breaking the plasma conduction path and magnetically insulating the electrons when it is desired to open the switch.

  10. Isolating Triggered Star Formation

    E-Print Network [OSTI]

    Elizabeth J. Barton; Jacob A. Arnold; Andrew R. Zentner; James S. Bullock; Risa H. Wechsler

    2007-08-21

    Galaxy pairs provide a potentially powerful means of studying triggered star formation from galaxy interactions. We use a large cosmological N-body simulation coupled with a well-tested semi-analytic substructure model to demonstrate that the majority of galaxies in close pairs reside within cluster or group-size halos and therefore represent a biased population, poorly suited for direct comparison to ``field'' galaxies. Thus, the frequent observation that some types of galaxies in pairs have redder colors than ``field'' galaxies is primarily a selection effect. We select galaxy pairs that are isolated in their dark matter halos with respect to other massive subhalos (N=2 halos) and a control sample of isolated galaxies (N=1 halos) for comparison. We then apply these selection criteria to a volume-limited subset of the 2dF Galaxy Redshift Survey with M_Bj ~ 5 above their average past value, while only 10% of isolated galaxies in the control sample show this level of enhancement. Thus, 14% (20 %) of the galaxies in these close pairs show clear triggered star formation. The isolation criteria we develop provide a means to constrain star formation and feedback prescriptions in hydrodynamic simulations and a very general method of understanding the importance of triggered star formation in a cosmological context. (Abridged.)

  11. DHS Letter ??? MERRTT Approval

    Office of Environmental Management (EM)

    Technical Assistance Division has asked me to respond to your letter and above cited curriculum submission of January 31, 2005. The course submitted has been reviewed and accepted...

  12. Letter to the Editor 

    E-Print Network [OSTI]

    Andrew, Paige

    2008-05-07

    Letter to the editor regarding Jorge A. Gonzalez’ article "Problems That Arise When Providing Geographic Coordinate Information for Cataloged Maps” (Coordinates Series B, No. 8)....

  13. Letter to the Editor 

    E-Print Network [OSTI]

    Kovarsky, Joel

    2008-04-17

    Letter to the editor regarding David Bosse's article, "Institutional Map and Atlas Collecting in Eighteenth-Century America," (Coordinates, Series B; 9)....

  14. NNSA POLICY LETTER

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

    NNSA POLICY LETTER Approved: 12-11-13 QUALITY MANAGEMENT SYSTEM NATIONAL NUCLEAR SECURITY ADMINISTRATION Office of the Administrator NAP-26 CONTROLLED COPIES AVAILABLE AT:...

  15. Program Launch Letter from Mayor

    Broader source: Energy.gov [DOE]

    Program Launch Letter from Mayor, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  16. EM SSAB Recommendations & Letters | Department of Energy

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

    and Letters - 2014-05 Included recommendations, letters, and other related materials. September 30, 2014 EM SSAB Recommendations and Letters - 2014-04 Included...

  17. The CDF silicon vertex trigger

    SciTech Connect (OSTI)

    B. Ashmanskas; A. Barchiesi; A. Bardi

    2003-06-23

    The CDF experiment's Silicon Vertex Trigger is a system of 150 custom 9U VME boards that reconstructs axial tracks in the CDF silicon strip detector in a 15 {mu}sec pipeline. SVT's 35 {mu}m impact parameter resolution enables CDF's Level 2 trigger to distinguish primary and secondary particles, and hence to collect large samples of hadronic bottom and charm decays. We review some of SVT's key design features. Speed is achieved with custom VLSI pattern recognition, linearized track fitting, pipelining, and parallel processing. Testing and reliability are aided by built-in logic state analysis and test-data sourcing at each board's input and output, a common inter-board data link, and a universal ''Merger'' board for data fan-in/fan-out. Speed and adaptability are enhanced by use of modern FPGAs.

  18. The Jefferson Lab Trigger Supervisor System

    SciTech Connect (OSTI)

    Ed Jastrzembsi; David Abbott; Graham Heyes; R.W. MacLeod; Carl Timmer; Elliott Wolin

    2000-04-01

    We discuss the design and performance of a Trigger Supervisor System for use in nuclear physics experiments at Jefferson Lab. We also discuss the enhanced features of a new Trigger Supervisor Module now under construction.

  19. Enforcement Letter, Lawrence Livermore National Laboratory -...

    Energy Savers [EERE]

    National Laboratory - November 5, 1999 Enforcement Letter, EG&G Mound Applied Technologies - August 22, 1996 Enforcement Letter, Brookhaven National Laboratory - December 18, 1996...

  20. Laser-triggered vacuum switch

    DOE Patents [OSTI]

    Brannon, P.J.; Cowgill, D.F.

    1990-12-18

    A laser-triggered vacuum switch has a material such as a alkali metal halide on the cathode electrode for thermally activated field emission of electrons and ions upon interaction with a laser beam, the material being in contact with the cathode with a surface facing the discharge gap. The material is preferably a mixture of KCl and Ti powders. The laser may either shine directly on the material, preferably through a hole in the anode, or be directed to the material over a fiber optic cable. 10 figs.

  1. DOE-L.__ PROPOSAL PREPARATION INSTRUCTIONS - COVER LETTER AND

    Office of Environmental Management (EM)

    L. PROPOSAL PREPARATION INSTRUCTIONS - COVER LETTER AND VOLUME I, OFFER AND OTHER DOCUMENTS (a) Instruction - Cover Letter. The cover letter shall include, but not be limited to,...

  2. Smart trigger logic for focal plane arrays

    DOE Patents [OSTI]

    Levy, James E; Campbell, David V; Holmes, Michael L; Lovejoy, Robert; Wojciechowski, Kenneth; Kay, Randolph R; Cavanaugh, William S; Gurrieri, Thomas M

    2014-03-25

    An electronic device includes a memory configured to receive data representing light intensity values from pixels in a focal plane array and a processor that analyzes the received data to determine which light values correspond to triggered pixels, where the triggered pixels are those pixels that meet a predefined set of criteria, and determines, for each triggered pixel, a set of neighbor pixels for which light intensity values are to be stored. The electronic device also includes a buffer that temporarily stores light intensity values for at least one previously processed row of pixels, so that when a triggered pixel is identified in a current row, light intensity values for the neighbor pixels in the previously processed row and for the triggered pixel are persistently stored, as well as a data transmitter that transmits the persistently stored light intensity values for the triggered and neighbor pixels to a data receiver.

  3. Aspects of earthquake triggering and seismicity clustering /

    E-Print Network [OSTI]

    Chen, Xiaowei

    2013-01-01

    important for earthquake prediction and hazard mitigation.of great impor- tance for earthquake prediction and hazardearthquake triggering tends to deviate from ETAS modeling predictions.

  4. Roberson Letter - April 11, 2003

    Office of Environmental Management (EM)

    1, 2003 Mr. James C. Bierer Chair Fernald Citizens Advisory Board Dear Mr. Bierer: This is in response to your February 26, 2003, letter regarding the proposed Office of Legacy...

  5. Outreach Letter Template for Clean Cities Coordinators Promoting...

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

    Letter Template for Clean Cities Coordinators Promoting the Workplace Charging Challenge ccoutreachlettertemplate-final.docx More Documents & Publications Outreach Letter...

  6. Hierarchical Trigger of the ALICE Calorimeters

    SciTech Connect (OSTI)

    Muller, Hans [CERN, Geneva, Switzerland; Awes, Terry C [ORNL

    2010-05-01

    The trigger of the ALICE electromagnetic calorimeters is implemented in 2 hierarchically connected layers of electronics. In the lower layer, level-0 algorithms search shower energy above threshold in locally confined Trigger Region Units (TRU). The top layer is implemented as a single, global trigger unit that receives the trigger data from all TRUs as input to the level-1 algorithm. This architecture was first developed for the PHOS high p{sub T} photon trigger before it was adopted by EMCal also for the jet trigger. TRU units digitize up to 112 analogue input signals from the Front End Electronics (FEE) and concentrate their digital stream in a single FPGA. A charge and time summing algorithm is combined with a peakfinder that suppresses spurious noise and is precise to single LHC bunches. With a peak-to-peak noise level of 150 MeV the linear dynamic range above threshold spans from MIP energies at 215 up to 50 GeV. Local level-0 decisions take less than 600 ns after LHC collisions, upon which all TRUs transfer their level-0 trigger data to the upstream global trigger module which searches within the remaining level-1 latency for high p{sub T} gamma showers (PHOS) and/or for Jet cone areas (EMCaL).

  7. Methods for automatic trigger threshold adjustment

    DOE Patents [OSTI]

    Welch, Benjamin J; Partridge, Michael E

    2014-03-18

    Methods are presented for adjusting trigger threshold values to compensate for drift in the quiescent level of a signal monitored for initiating a data recording event, thereby avoiding false triggering conditions. Initial threshold values are periodically adjusted by re-measuring the quiescent signal level, and adjusting the threshold values by an offset computation based upon the measured quiescent signal level drift. Re-computation of the trigger threshold values can be implemented on time based or counter based criteria. Additionally, a qualification width counter can be utilized to implement a requirement that a trigger threshold criterion be met a given number of times prior to initiating a data recording event, further reducing the possibility of a false triggering situation.

  8. Letter and word priming 1 Running head: Letter and word priming

    E-Print Network [OSTI]

    Bowers, Jeff

    Letter and word priming 1 Running head: Letter and word priming Orthographic, phonological, and articulatory contributions to masked letter and word priming Jeffrey S. Bowers Rice University Gabriella Vigliocco University of Wisconsin-Madison Richard Haan University of Arizona #12;Letter and word priming 2

  9. LettersForum512 Can biological invasions

    E-Print Network [OSTI]

    D'Odorico, Paolo

    LettersForum512 Letters Can biological invasions induce desertification? A common form of land present a new desertification paradigm that includes the invasion of stable desert shrublands by exotic

  10. Blanche No More: Voice, Letter, Agency 

    E-Print Network [OSTI]

    McGuire, Janiece Anne

    2013-02-22

    Blanche No More: Voice, Letter, Agency seeks to locate, examine and trace the role of the author in culture. The subject of Authorship is one that is seemingly endless, therefore, Blanch No More: Voice, Letter, Agency ...

  11. Dark Matter Triggers of Supernovae

    E-Print Network [OSTI]

    Peter W. Graham; Surjeet Rajendran; Jaime Varela

    2015-05-17

    The transit of primordial black holes through a white dwarf causes localized heating around the trajectory of the black hole through dynamical friction. For sufficiently massive black holes, this heat can initiate runaway thermonuclear fusion causing the white dwarf to explode as a supernova. The shape of the observed distribution of white dwarfs with masses up to $1.25 M_{\\odot}$ rules out primordial black holes with masses $\\sim 10^{19}$ gm - $10^{20}$ gm as a dominant constituent of the local dark matter density. Black holes with masses as large as $10^{24}$ gm will be excluded if recent observations by the NuStar collaboration of a population of white dwarfs near the galactic center are confirmed. Black holes in the mass range $10^{20}$ gm - $10^{22}$ gm are also constrained by the observed supernova rate, though these bounds are subject to astrophysical uncertainties. These bounds can be further strengthened through measurements of white dwarf binaries in gravitational wave observatories. The mechanism proposed in this paper can constrain a variety of other dark matter scenarios such as Q balls, annihilation/collision of large composite states of dark matter and models of dark matter where the accretion of dark matter leads to the formation of compact cores within the star. White dwarfs, with their astronomical lifetimes and sizes, can thus act as large space-time volume detectors enabling a unique probe of the properties of dark matter, especially of dark matter candidates that have low number density. This mechanism also raises the intriguing possibility that a class of supernova may be triggered through rare events induced by dark matter rather than the conventional mechanism of accreting white dwarfs that explode upon reaching the Chandrasekhar mass.

  12. Letters of Outreach to Partner Communities

    Broader source: Energy.gov [DOE]

    Letters of Outreach to Partner Communities, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  13. Conditional Offer Letter Executive/Senior Administrative

    E-Print Network [OSTI]

    Acton, Scott

    Conditional Offer Letter Web Form Executive/Senior Administrative University Staff Introduction below will generate a standard conditional offer letter based on information entered by the user. This conditional offer letter web form is specific to the hiring of E&SA University Staff employees

  14. Time and event triggered communication scheduling for automotive applications

    E-Print Network [OSTI]

    Johansson, Roger

    Time and event triggered communication scheduling for automotive applications ROGER JOHANSSON and event triggered communication scheduling for automotive applications 1 ROGER JOHANSSON Department triggered communication scheduling for automotive applications ROGER JOHANSSON © ROGER JOHANSSON, 2004

  15. The dangers of being trigger--happy

    E-Print Network [OSTI]

    Dale, J E; Bressert, E

    2015-01-01

    We examine the evidence offered for triggered star formation against the backdrop provided by recent numerical simulations of feedback from massive stars at or below giant molecular cloud sizescales. We compile a catalogue of sixty--seven observational papers, mostly published over the last decade, and examine the signposts most commonly used to infer the presence of triggered star formation. We then determine how well these signposts perform in a recent suite of hydrodynamic simulations of star formation including feedback from O--type stars performed by Dale et al (2012a, b, 2013a, b, 2014). We find that none of the observational markers improve the chances of correctly identifying a given star as triggered by more than factors of two at most. This limits the fidelity of these techniques in interpreting star formation histories. We therefore urge caution in interpreting observations of star formation near feedback--driven structures in terms of triggering.

  16. Ocean fronts trigger high latitude phytoplankton blooms

    E-Print Network [OSTI]

    Taylor, John R.

    Density fronts are ubiquitous features of the upper ocean. Here, numerical simulations show that restratification at fronts inhibits vertical mixing, triggering phytoplankton blooms in low-light conditions. The stability ...

  17. Enforcement Letters | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOEEnergyEnforcement Letters Enforcement Letters

  18. engineering LETTER FROM THE DEAN

    E-Print Network [OSTI]

    Bergman, Keren

    exploring columbia engineering majors #12;LETTER FROM THE DEAN Today, Engineering is in a period the possibilities and promise of interdisciplinary discoveries. Here at Columbia Engineering, you have many diverse, you may have had an idea of some of the many career options that an engineering or applied science

  19. engineering LETTER FROM THE DEAN

    E-Print Network [OSTI]

    Hone, James

    exploring columbia engineering majors #12;LETTER FROM THE DEAN Making a decision about your engineering or applied science major can seem like a daunting dilemma, but, with the right approach. Although engineering is a global, interdisciplinary field, once you choose your major, it will set you

  20. Sequentially Triggered Star Formation in OB Associations

    E-Print Network [OSTI]

    Thomas Preibisch; Hans Zinnecker

    2006-10-27

    We discuss observational evidence for sequential and triggered star formation in OB associations. We first review the star formation process in the Scorpius-Centaurus OB association, the nearest OB association to the Sun, where several recent extensive studies have allowed us to reconstruct the star formation history in a rather detailed way. We then compare the observational results with those obtained for other OB associations and with recent models of rapid cloud and star formation in the turbulent interstellar medium. We conclude that the formation of whole OB subgroups (each consisting of several thousand stars) requires large-scale triggering mechanisms such as shocks from expanding wind and supernova driven superbubbles surrounding older subgroups. Other triggering mechanisms, like radiatively driven implosion of globules, also operate, but seem to be secondary processes, forming only small stellar groups rather than whole OB subgroups with thousands of stars.

  1. 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.

  2. Enforcement Letter, Geiger Brothers Mechanical Contractors, INC...

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

    Geiger Brothers Mechanical Contractors, INC - March 26, 2010 Enforcement Letter, Geiger Brothers Mechanical Contractors, INC - March 26, 2010 March 26, 2010 Issued to Geiger...

  3. Cover Letter Formula Ready Reference F-3

    E-Print Network [OSTI]

    Cover Letter Formula Ready Reference F-3 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of Engineering, Architecture & Technology Career Services Office

  4. Letter of Refusal Ready Reference F-8

    E-Print Network [OSTI]

    Letter of Refusal Ready Reference F-8 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology Career

  5. Sample Withdrawal Letter Ready Reference F-11

    E-Print Network [OSTI]

    Sample Withdrawal Letter Ready Reference F-11 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology

  6. Sample Application Letter Ready Reference F-5

    E-Print Network [OSTI]

    Sample Application Letter Ready Reference F-5 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology

  7. Sample Networking Letter Ready Reference F-6

    E-Print Network [OSTI]

    Sample Networking Letter Ready Reference F-6 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology

  8. Sample Acceptance Letter Ready Reference F-10

    E-Print Network [OSTI]

    Sample Acceptance Letter Ready Reference F-10 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology

  9. 2008 MERRTT Revision Letter | Department of Energy

    Office of Environmental Management (EM)

    Revision Letter The 2008 version of MERRTT includes several enhancements, but the primary enhancement is the addition of the decontamination dress-down video. Comments...

  10. Enforcement Letter, National Security Technologies, LLC - November...

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

    November 13, 2007 Enforcement Letter, National Security Technologies, LLC - November 13, 2007 November 13, 2007 Issued to National Security Technologies, LLC related to an...

  11. POLICY FLASH 2015-25 - Acquisition Letters Remaining in Effect...

    Office of Environmental Management (EM)

    5 - Acquisition Letters Remaining in Effect POLICY FLASH 2015-25 - Acquisition Letters Remaining in Effect DATE: May 12, 2015 TO: Procurement DirectorsContracting Officers FROM:...

  12. Acquisition Letter No. AL 2014-07 | Department of Energy

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

    Acquisition Letter 07 - Benchmark Compensation Amount for Individual Executive Salary Actions SUMMARY: The purpose of Acquisition Letter (AL) 2014-07 is to establish the...

  13. Policy Flash 2013-30 Acquisition Letter on Acquisition Planning...

    Energy Savers [EERE]

    Policy Flash 2013-30 Acquisition Letter on Acquisition Planning Considerations for Management and Operating Contracts Policy Flash 2013-30 Acquisition Letter on Acquisition...

  14. POLICY GUIDANCE MEMORANDUM #29 Employment Offers Letters Performance...

    Office of Environmental Management (EM)

    9 Employment Offers Letters Performance Management POLICY GUIDANCE MEMORANDUM 29 Employment Offers Letters Performance Management This memorandum is to ensure compliance with DOE...

  15. Secretaries Bodman and Schafer's letter to Senator Bingaman ...

    Office of Environmental Management (EM)

    and Schafer's letter to Senator Bingaman A letter to the Honorable Jeff Bingaman on biofuels policy, from the Secretary of Energy, Samuel W. Bodman, and Secretary of...

  16. Multiple output timing and trigger generator

    SciTech Connect (OSTI)

    Wheat, Robert M. [Los Alamos National Laboratory; Dale, Gregory E [Los Alamos National Laboratory

    2009-01-01

    In support of the development of a multiple stage pulse modulator at the Los Alamos National Laboratory, we have developed a first generation, multiple output timing and trigger generator. Exploiting Commercial Off The Shelf (COTS) Micro Controller Units (MCU's), the timing and trigger generator provides 32 independent outputs with a timing resolution of about 500 ns. The timing and trigger generator system is comprised of two MCU boards and a single PC. One of the MCU boards performs the functions of the timing and signal generation (the timing controller) while the second MCU board accepts commands from the PC and provides the timing instructions to the timing controller. The PC provides the user interface for adjusting the on and off timing for each of the output signals. This system provides 32 output or timing signals which can be pre-programmed to be in an on or off state for each of 64 time steps. The width or duration of each of the 64 time steps is programmable from 2 {micro}s to 2.5 ms with a minimum time resolution of 500 ns. The repetition rate of the programmed pulse train is only limited by the time duration of the programmed event. This paper describes the design and function of the timing and trigger generator system and software including test results and measurements.

  17. Can Photo-Evaporation Trigger Planetesimal Formation?

    E-Print Network [OSTI]

    Throop, Henry

    Can Photo-Evaporation Trigger Planetesimal Formation? Henry Throop John Bally SWRI Univ.Colorado / CASA DPS 12-Oct-2004 #12;Orion Nebula Photo-evaporation by extr 4 O/B stars, UV-bright, 105 solar luminosities 2000 solar-type stars with disks Photo-evaporation (PE) by external O/B stars removes disks on 105

  18. FPGA Trigger System to Run Klystrons

    SciTech Connect (OSTI)

    Gray, Darius; /Texas A-M /SLAC

    2010-08-25

    The Klystron Department is in need of a new trigger system to update the laboratory capabilities. The objective of the research is to develop the trigger system using Field Programmable Gate Array (FPGA) technology with a user interface that will allow one to communicate with the FPGA via a Universal Serial Bus (USB). This trigger system will be used for the testing of klystrons. The key materials used consists of the Xilinx Integrated Software Environment (ISE) Foundation, a Programmable Read Only Memory (Prom) XCF04S, a Xilinx Spartan 3E 35S500E FPGA, Xilinx Platform Cable USB II, a Printed Circuit Board (PCB), a 100 MHz oscillator, and an oscilloscope. Key considerations include eight triggers, two of which have variable phase shifting capabilities. Once the project was completed the output signals were able to be manipulated via a Graphical User Interface by varying the delay and width of the signal. This was as planned; however, the ability to vary the phase was not completed. Future work could consist of being able to vary the phase. This project will give the operators in the Klystron Department more flexibility to run various tests.

  19. Retinal Remodeling Triggered by Photoreceptor Degenerations

    E-Print Network [OSTI]

    Marc, Robert E.

    retina drive signal-processing circuitries of the neural retina. Most retinal degenerationsRetinal Remodeling Triggered by Photoreceptor Degenerations BRYAN W. JONES,1* CARL B. WATT,1 JEANNE retina is largely resistant to this sensory deafferentation. New evidence from fast retinal degenerations

  20. High Level Trigger Configuration and Handling of Trigger Tables in the CMS Filter Farm

    SciTech Connect (OSTI)

    Bauer, G; Behrens, U; Boyer, V; Branson, J; Brett, A; Cano, E; Carboni, A; Ciganek, M; Cittolin, S; O'dell, V; Erhan, S; Gigi, D; Glege, F; Gomez-Reino, R; Gulmini, M; Gutleber, J; Hollar, J; Lange, D; Kim, J C; Klute, M; Lipeles, E; Perez, J L; Maron, G; Meijers, F; Meschi, E; Moser, R; Mlot, E G; Murray, S; Oh, A; Orsini, L; Paus, C; Petrucci, A; Pieri, M; Pollet, L; Racz, A; Sakulin, H; Sani, M; Schieferdecker, P; Schwick, C; Sumorok, K; Suzuki, I; Tsirigkas, D; Varela, J

    2009-11-22

    The CMS experiment at the CERN Large Hadron Collider is currently being commissioned and is scheduled to collect the first pp collision data in 2008. CMS features a two-level trigger system. The Level-1 trigger, based on custom hardware, is designed to reduce the collision rate of 40 MHz to approximately 100 kHz. Data for events accepted by the Level-1 trigger are read out and assembled by an Event Builder. The High Level Trigger (HLT) employs a set of sophisticated software algorithms, to analyze the complete event information, and further reduce the accepted event rate for permanent storage and analysis. This paper describes the design and implementation of the HLT Configuration Management system. First experiences with commissioning of the HLT system are also reported.

  1. Geddes’ second letter: A letter to the editor

    E-Print Network [OSTI]

    Smith, Val H.

    2005-10-01

    , “Shorter, warmer winters and drier summers are here. Warmer spring temperatures cause our rivers to peak about two weeks earlier than in the past…These changes are consistent with global cli- mate models predicting the greatest warming over the higher... Strategies for Global Change 9: 315–33. Nordhaus WD. 2001. Global warming eco- nomics. Science 294: 1283–84. Schelling TC. 2002. What makes green- house sense? Foreign Affairs May–June. Geddes’ second letter, recycled from another of his newspaper columns...

  2. Systems & Control Letters 31, 199205, 1997

    E-Print Network [OSTI]

    Lewis, Andrew D.

    Systems & Control Letters 31, 199­205, 1997 Decompositions for control systems on manifolds In this letter we present a decomposition for control systems whose drift vector field is the geodesic spray are able to easily prove some special results for this class of control systems. Examples illustrate

  3. Level-2 Calorimeter Trigger Upgrade at CDF

    SciTech Connect (OSTI)

    Flanagan, G.U.; /Purdue U.

    2007-04-01

    The CDF Run II Level-2 calorimeter trigger is implemented in hardware and is based on an algorithm used in Run I. This system insured good performance at low luminosity obtained during the Tevatron Run II. However, as the Tevatron instantaneous luminosity increases, the limitations of the current system due to the algorithm start to become clear. In this paper, we will present an upgrade of the Level-2 calorimeter trigger system at CDF. The upgrade is based on the Pulsar board, a general purpose VME board developed at CDF and used for upgrading both the Level-2 tracking and the Level-2 global decision crate. This paper will describe the design, hardware and software implementation, as well as the advantages of this approach over the existing system.

  4. Dynamic Filtering and Mining Triggers in Mesoscale Meteorology Forecasting

    E-Print Network [OSTI]

    Plale, Beth

    Dynamic Filtering and Mining Triggers in Mesoscale Meteorology Forecasting Nithya N. Vijayakumar {rramachandran, xli}@itsc.uah.edu Abstract-- Mesoscale meteorology forecasting as a data driven application Triggers, Data Mining, Stream Processing, Meteorology Forecasting I. INTRODUCTION Mesoscale meteorologists

  5. Systemsize dependence of associated yields in hadron-triggered jets

    E-Print Network [OSTI]

    Abelev, Betty

    2010-01-01

    in hadron-triggered jets B.I.Abelev (STARCollaboration)yields in hadron-triggered jets B. I. Abelev 8 , M. M.+Au collisions reveal similar jet-like correlation yields at

  6. The LHCb trigger and its performance in 2011

    E-Print Network [OSTI]

    Williams, M.

    This paper presents the design of the LHCb trigger and its performance on data taken at the LHC in 2011. A principal goal of LHCb is to perform flavour physics measurements, and the trigger is designed to distinguish charm ...

  7. Letters of Expectation for Campus Alberta November 7, 2013

    E-Print Network [OSTI]

    Calgary, University of

    1 Fact sheet Letters of Expectation for Campus Alberta November 7, 2013 Letters of Expectation Alberta system. The Letters of Expectation were first introduced in Budget 2013 and these are the first-month collaborative process among the government and all 26 Campus Alberta post-secondary institutions. Each letter

  8. Human Resource Procedure: Employment Offer Letters Revised May 21, 2014

    E-Print Network [OSTI]

    Stuart, Steven J.

    Human Resource Procedure: Employment Offer Letters 1 Revised ­ May 21, 2014 Purpose An offer letter and employee regarding the employee's employment with Clemson. Therefore, all offer letters need to contain specific and accurate information about the offer of employment. When is an offer letter used? Offer

  9. Data for article "Supramolecular hydrogel microcapsules via cucurbit[8]uril host-guest interactions with triggered and UV-controlled molecular permeability"

    E-Print Network [OSTI]

    Yu, Ziyi; Zhang, Jing; Coulston, Roger J.; Parker, Richard M.; Biedermann, Frank; Liu, Xin; Scherman, Oren A.; Abell, Chris

    2015-06-05

    the emission light. The signal from the photomultiplier tube was obtained by NI PCI-6251 data acquisition (National Instruments) and then was analysed by Labview 8.2.software, compiled into the spreadsheet, fluorescence profiles.xlsx. Folder 2: Photos...

  10. Triggering events with GPU at ATLAS

    E-Print Network [OSTI]

    Kama, Sami; The ATLAS collaboration

    2015-01-01

    The growing complexity of events produced in LHC collisions demands more and more computing power both for the on line selection and for the offline reconstruction of events. In recent years, the explosive performance growth of massively parallel processors like Graphical Processing Units both in computing power and in low energy consumption, make GPU extremely attractive for using them in a complex high energy experiment like ATLAS. Together with the optimization of reconstruction algorithms exploiting this new massively parallel paradigm, a small scale prototype of the full ATLAS High Level Trigger exploiting GPU has been implemented. We discuss the integration procedure of this prototype, the achieved performance and the prospects for the future.

  11. Policy Flash 2013-51 311 Notice Aquisition Letter 2013-05 Financial...

    Energy Savers [EERE]

    Policy Flash 2013-51 311 Notice Aquisition Letter 2013-05 Financial Assistance Letter 2013-03 Policy Flash 2013-51 311 Notice Aquisition Letter 2013-05 Financial Assistance Letter...

  12. Policy Flash 2014-20 / Acquisition Letter 2014-05 / Financial...

    Energy Savers [EERE]

    0 Acquisition Letter 2014-05 Financial Acquisition Letter 2014-02 Policy Flash 2014-20 Acquisition Letter 2014-05 Financial Acquisition Letter 2014-02 DATE: March 10, 2014...

  13. Author's personal copy Surface Science Letters

    E-Print Network [OSTI]

    De Micheli, Giovanni

    as hydroxyl groups for repelling non-speci c DNA. This letter proposes a new kind of ethylene-glycol silane Special ethylene-glycol silanes terminated with amine and methoxyl groups were designed by us

  14. ATMOSPHERIC SCIENCE LETTERS Atmos. Sci. Let. (2012)

    E-Print Network [OSTI]

    Gerber, Edwin

    2012-01-01

    ATMOSPHERIC SCIENCE LETTERS Atmos. Sci. Let. (2012) Published online in Wiley Online Library using National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP) concentrations and sea- surface temperatures (SSTs). These integrations enable the relative role of ozone

  15. BIOGEOCHEMISTRY LETTERS Chronic nitrogen additions suppress decomposition

    E-Print Network [OSTI]

    Templer, Pamela

    BIOGEOCHEMISTRY LETTERS Chronic nitrogen additions suppress decomposition and sequester soil carbon dioxide emis- sions, offsetting a substantial portion of greenhouse gas forcing of the climate system. Although a number of factors are responsible for this terrestrial carbon sink, atmospheric nitrogen

  16. NNSA Policy Letter: NAP-4B

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

    Policy Letter: NAP-4B Date: June 30,2008 TITLE: Corporate Performance Evaluation Process for M&O Contractors I. OBJECTIVE: To establish and implement a uniform, corporate process...

  17. Letters

    E-Print Network [OSTI]

    our readers, From

    2012-01-01

    Bill. Today, UC’s land- grant university thrives as the Agricultural Experiment Stations at UC Berkeley, Davis

  18. Letters

    E-Print Network [OSTI]

    Readers, Our

    2013-01-01

    and Solar Energy Co-Production Project. On page 62, “Nitrogen fertilizer use in California: Assessing the data,

  19. Letter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E C H N ILessonsLessons

  20. Engineering Challenges in Antiproton Triggered Fusion Propulsion

    SciTech Connect (OSTI)

    Cassenti, Brice [Department. of Engineering and Science, Rensselaer Polytechnic Institute, 275 Windsor Avenue, Hattford, CT 06120 (United States); Kammash, Terry [Nuclear Engineering Department, University of Michigan, Ann Arbor, MI 48109 (United States)

    2008-01-21

    During the last decade antiproton triggered fusion propulsion has been investigated as a method for achieving high specific impulse, high thrust in a nuclear pulse propulsion system. In general the antiprotons are injected into a pellet containing fusion fuel with a small amount of fissionable material (i.e., an amount less than the critical mass) where the products from the fission are then used to trigger a fusion reaction. Initial calculations and simulations indicate that if magnetically insulated inertial confinement fusion is used that the pellets should result in a specific impulse of between 100,000 and 300,000 seconds at high thrust. The engineering challenges associated with this propulsion system are significant. For example, the antiprotons must be precisely focused. The pellet must be designed to contain the fission and initial fusion products and this will require strong magnetic fields. The fusion fuel must be contained for a sufficiently long time to effectively release the fusion energy, and the payload must be shielded from the radiation, especially the excess neutrons emitted, in addition to many other particles. We will review the recent progress, possible engineering solutions and the potential performance of these systems.

  1. The ATLAS High Level Trigger Steering Framework and the Trigger Configuration System.

    E-Print Network [OSTI]

    Perez Cavalcanti, Tiago; The ATLAS collaboration

    2011-01-01

    The ATLAS detector system installed in the Large Hadron Collider (LHC) at CERN is designed to study proton-proton and nucleus-nucleus collisions with a maximum centre of mass energy of 14 TeV at a bunch collision rate of 40MHz. In March 2010 the four LHC experiments saw the first proton-proton collisions at 7 TeV. Still within the year a collision rate of nearly 10 MHz is expected. At ATLAS, events of potential interest for ATLAS physics are selected by a three-level trigger system, with a final recording rate of about 200 Hz. The first level (L1) is implemented in custom hardware; the two levels of the high level trigger (HLT) are software triggers, running on large farms of standard computers and network devices. Within the ATLAS physics program more than 500 trigger signatures are defined. The HLT tests each signature on each L1-accepted event; the test outcome is recorded for later analysis. The HLT-Steering is responsible for this. It foremost ensures the independent test of each signature, guarantying u...

  2. Letter of Evaluation For: ______________________________ Furman ID# __________________ Letter requested for admittance into the profession of ___________________________________

    E-Print Network [OSTI]

    requested for admittance into the profession of ___________________________________ Applicant: Before you are required to submit letters of evaluation that detail that student's fitness for the profession. Schools are best suited to this demanding profession. Below are some suggestions for writing a letter of evaluation

  3. The ATLAS Trigger System: Ready for Run 2

    E-Print Network [OSTI]

    Czodrowski, Patrick; The ATLAS collaboration

    2015-01-01

    The ATLAS trigger system has been used successfully for data collection in the 2009-2013 Run 1 operation cycle of the CERN Large Hadron Collider (LHC) at center-of-mass energies of up to 8 TeV. With the restart of the LHC for the new Run 2 data-taking period at 13 TeV, the trigger rates are expected to rise by approximately a factor of 5. This presentation gave a brief overview of the upgrades to the ATLAS trigger system that have been implemented during the LHC shutdown period in order to deal with the increased trigger rates while efficiently selecting the physics processes of interest. These upgrades include changes to the L1 calorimeter trigger, the introduction of a new L1 topological trigger module, improvements in the L1 muon system, and the merging of the previously two-level HLT system into a single processing farm.

  4. Designing and Building File-Folder Bridges

    E-Print Network [OSTI]

    Bowen, James D.

    with a group of our undergraduate engineering students to run a popsicle stick bridge-building contest for 11th into teams, and each team received a pile of popsicle sticks and a hot glue gun. Within a specified period

  5. Method for modifying trigger level for adsorber regeneration

    DOE Patents [OSTI]

    Ruth, Michael J.; Cunningham, Michael J.

    2010-05-25

    A method for modifying a NO.sub.x adsorber regeneration triggering variable. Engine operating conditions are monitored until the regeneration triggering variable is met. The adsorber is regenerated and the adsorbtion efficiency of the adsorber is subsequently determined. The regeneration triggering variable is modified to correspond with the decline in adsorber efficiency. The adsorber efficiency may be determined using an empirically predetermined set of values or by using a pair of oxygen sensors to determine the oxygen response delay across the sensors.

  6. CDF/MEMO/TRIGGER/CDFR/5424 Version 1.0

    E-Print Network [OSTI]

    /4) + CSP Hit Bit 05 CMU High Pt Stub + CMP Stub (3/4) + CSP Hit 1 #12; Bit 06 Dimuon Test Bit - 2 CMU Low > 120deg) Bit 18 Cosmic Trigger II : 2 CMP Stubs (3/4) + CSP Hits (Top & Bottom) Bit 19 Bunch Zero Crossing Trigger Note A: CSP hits will be included in the de#12;nition of trigger bits 4 and 5. However, we

  7. Triggering events with GPUs at ATLAS

    E-Print Network [OSTI]

    Kama, Sami; The ATLAS collaboration

    2015-01-01

    The growing complexity of events produced in LHC collisions demands more and more computing power both for the online selection and for the offline reconstruction of events. In recent years, the explosive performance growth of massively parallel processors like Graphics Processing Units~(GPU) both in computing power and in low energy consumption, make GPU extremely attractive for using them in a complex high energy experiment like ATLAS. Together with the optimization of reconstruction algorithms this new massively parallel paradigm is exploited. For this purpose a small scale prototype of the full ATLAS High Level Trigger involving GPU has been implemented. We discuss the integration procedure of this prototype, the achieved performance and the prospects for the future

  8. Radio Triggered Star Formation in Cooling Flows

    E-Print Network [OSTI]

    B. R. McNamara

    1999-11-08

    The giant galaxies located at the centers of cluster cooling flows are frequently sites of vigorous star formation. In some instances, star formation appears to have been triggered by the galaxy's radio source. The colors and spectral indices of the young populations are generally consistent with short duration bursts or continuous star formation for durations much less than 1 Gyr, which is less than the presumed ages of cooling flows. The star formation properties are inconsistent with fueling by a continuously accreting cooling flow, although the prevalence of star formation is consistent with repeated bursts and periodic refueling. Star formation may be fueled, in some cases, by cold material stripped from neighboring cluster galaxies.

  9. Earthquake triggering discussed in three Frontiers in Science...

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

    Frontiers in Science lectures Earthquake triggering discussed in three Frontiers in Science lectures Earthquakes and their possible causes is the topic of the next series of...

  10. DOE Directives and NNSA Policy Letters Enforceable under 10 C...

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

    DOE Directives and NNSA Policy Letters Enforceable under 10 C.F.R. Part 824 DOE Directives and NNSA Policy Letters Enforceable under 10 C.F.R. Part 824 June 26, 2015 - 2:24pm...

  11. Policy Flash 20 Acquisition Letter 2014-05/Financial Acquisition...

    Office of Environmental Management (EM)

    301 Contract Award letter FY2014 March 5.pdf Attachment 2A1 DOE Section 301 Financial Assistance Letter FY2014 March 5 2014.pdf Attachment 2A2 DOE Section 301 Financial Assistance...

  12. HEALTH PROFESSIONS LETTER OF EVALUATION REQUEST TRUMAN STATE UNIVERSITY

    E-Print Network [OSTI]

    Gering, Jon C.

    HEALTH PROFESSIONS LETTER OF EVALUATION REQUEST TRUMAN STATE UNIVERSITY: Date: I hereby give permission for the Truman Health Professions

  13. Sandia aids FBI in investigation of anthrax letters

    SciTech Connect (OSTI)

    Paul Kotula and Joe Michael

    2008-11-19

    Paul Kotula and Joe Michael of Sandia National Laboratories discuss their work in the FBI anthrax letters investigation.

  14. Sandia aids FBI in investigation of anthrax letters

    ScienceCinema (OSTI)

    Paul Kotula and Joe Michael

    2010-01-08

    Paul Kotula and Joe Michael of Sandia National Laboratories discuss their work in the FBI anthrax letters investigation.

  15. The effects of mnemonics on letter recognition and letter sound acquisition of at-risk kindergarten students 

    E-Print Network [OSTI]

    White, Teresa

    2009-05-15

    This study examined the effectiveness of embedded picture mnemonic alphabet cards on the acquisition of letter name and letter sound knowledge with at-risk kindergarten students in a rural Texas public school. The study ...

  16. Montana State University 1 College of Letters and

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    /cell-biology-neuroscience/phd-neuroscience) Department of Chemistry and Biochemistry (http:// catalog.montana.edu/graduate/letters-science/chemistry- biochemistry) · M.S. in Chemistry (http://catalog.montana.edu/graduate/letters- science/chemistry-biochemistry/ms-chemistry) · M.S. in Biochemistry (http://catalog.montana.edu/graduate/letters- science/chemistry

  17. Letter Spirit: Recognition and Creation of Letterforms Based

    E-Print Network [OSTI]

    Indiana University

    of the word. Letter Spirit explores creativity through the use of a design task, the art of letter design. Like most visual design tasks, letter design is deeply tied to the conceptual level. Artificial for stir­fry beef and broccoli by substi­ tuting ``broccoli'' for ``green beans'' in a recipe that it has

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

    E-Print Network [OSTI]

    Maeda, Junpei; The ATLAS collaboration

    2015-01-01

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

  19. The ATLAS Trigger System - Ready for Run-2

    E-Print Network [OSTI]

    Backes, Moritz; The ATLAS collaboration

    2015-01-01

    The ATLAS trigger has been successfully collecting collision data during the first run of the LHC between 2009-2013 at a centre-of-mass energy between 900 GeV and 8 TeV. The trigger system consists of a hardware based Level-1 (L1) and a software based high-level trigger (HLT) that reduces the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of a few hundred Hz. During the course of the ongoing Run-2 data-taking campaign at 13 TeV centre-of-mass energy the trigger rates will be approximately 5 times higher compared to Run-1. In these proceedings we briefly review the ATLAS trigger system upgrades that were implemented during the shutdown, allowing us to cope with the increased trigger rates while maintaining or even improving our efficiency to select relevant physics processes. This includes changes to the L1 calorimeter and muon trigger system, the introduction of a new L1 topological trigger subsystem and the merging of the previously two-level HLT system into a single ev...

  20. Triggering for Magnetic Field Measurements of the LCLS Undulators

    SciTech Connect (OSTI)

    Hacker, Kirsten

    2010-12-13

    A triggering system for magnetic field measurements of the LCLS undulators has been built with a National Instruments PXI-1002 and a Xylinx FPGA board. The system generates single triggers at specified positions, regardless of encoder sensor jitter about a linear scale.

  1. Half a Century of Physical Review Letters

    ScienceCinema (OSTI)

    Garisto, Robert

    2010-01-08

    Fifty years ago, Sam Goudsmit started an experiment: the journal Physical Review Letters.  Since 1958, the experiment has thrived. PRL has gone through many changes, published many important papers, and become a leader in international scientific publication.  I will trace the rise of PRL from its early 20th century roots as "Letters to the Editor," through changes in editorial process and advents of new technology. Along the way I'll show what has gone on behind the scenes, and give a glimpse of our plans for the future.  I'll also give some advice to would-be authors and referees, illustrated with interesting correspondence we've received.

  2. A FLUX ROPE ERUPTION TRIGGERED BY JETS

    SciTech Connect (OSTI)

    Guo Juan; Zhang Hongqi; Deng Yuanyong; Lin Jiaben; Su Jiangtao; Liu Yu

    2010-03-10

    We present an observation of a filament eruption caused by recurrent chromospheric plasma injections (surges/jets) on 2006 July 6. The filament eruption was associated with an M2.5 two-ribbon flare and a coronal mass ejection (CME). There was a light bridge in the umbra of the main sunspot of NOAA 10898; one end of the filament was terminated at the region close to the light bridge, and recurrent surges were observed to be ejected from the light bridge. The surges occurred intermittently for about 8 hr before the filament eruption, and finally a clear jet was found at the light bridge to trigger the filament eruption. We analyzed the evolutions of the relative darkness of the filament and the loaded mass by the continuous surges quantitatively. It was found that as the occurrence of the surges, the relative darkness of the filament body continued growing for about 3-4 hr, reached its maximum, and kept stable for more than 2 hr until it erupted. If suppose 50% of the ejected mass by the surges could be trapped by the filament channel, then the total loaded mass into the filament channelwill be about 0.57x10{sup 16} g with a momentum of 0.57x10{sup 22} g cm s{sup -1} by 08:08 UT, which is a non-negligible effect on the stability of the filament. Based on the observations, we present a model showing the important role that recurrent chromospheric mass injection play in the evolution and eruption of a flux rope. Our study confirms that the surge activities can efficiently supply the necessary material for some filament formation. Furthermore, our study indicates that the continuous mass with momentum loaded by the surge activities to the filament channel could make the filament unstable and cause it to erupt.

  3. GREEK LETTERS Learn the names of Greek letters not just the obvious ones like alpha,

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    GREEK LETTERS Learn the names of Greek letters ­ not just the obvious ones like alpha, beta, and pi A ´ (alpha) a B ´ (beta) b ´µµ (gamma) g ´ (delta) d E ´o (epsilon) e Z ´ (zeta) z H ´ (eta) ee ´ (theta atom ´o book ´o basic Bo ´ Boston µ´ geometry ´ language ´ French µo´ democracy ´o tooth ´ energy E

  4. Operation of the Upgraded ATLAS Level-1 Central Trigger System

    E-Print Network [OSTI]

    Glatzer, Julian Maximilian Volker; The ATLAS collaboration

    2015-01-01

    The ATLAS Level-1 Central Trigger (L1CT) system is a central part of ATLAS data-taking and has undergone a major upgrade for Run 2 of the LHC, in order to cope with the expected increase of instantaneous luminosity of a factor of 2 with respect to Run 1. The upgraded hardware offers more flexibility in the trigger decisions due to the double amount of trigger inputs and usable trigger channels. It also provides an interface to the new topological trigger system. Operationally - particularly useful for commissioning, calibration and test runs - it allows concurrent running of up to 3 different sub-detector combinations. In this contribution, we give an overview of the operational software framework of the L1CT system with particular emphasis of the configuration, controls and monitoring aspects. The software framework allows a consistent configuration with respect to the ATLAS experiment and the LHC machine, upstream and downstream trigger processors, and the data acquisition. Trigger and dead-time rates are m...

  5. Operation of the Upgraded ATLAS Level-1 Central Trigger System

    E-Print Network [OSTI]

    Glatzer, Julian Maximilian Volker; The ATLAS collaboration

    2015-01-01

    The ATLAS Level-1 Central Trigger (L1CT) system is a central part of ATLAS data-taking and has undergone a major upgrade for Run 2 of the LHC, in order to cope with the expected increase of instantaneous luminosity of a factor of 2 with respect to Run 1. The upgraded hardware offers more flexibility in the trigger decisions due to the double amount of trigger inputs and usable trigger channels. It also provides an interface to the new topological trigger system. Operationally - particularly useful for commissioning, calibration and test runs - it allows concurrent running of up to 3 different subdetector combinations. An overview of the operational software framework of the L1CT system with particular emphasis of the configuration, controls and monitoring aspects is given. The software framework allows a consistent configuration with respect to the ATLAS experiment and the LHC machine, upstream and downstream trigger processors, and the data acquisition. Trigger and dead-time rates are monitored coherently at...

  6. 1999 Macmillan Magazines Ltd letters to nature

    E-Print Network [OSTI]

    Seideman, Tamar

    © 1999 Macmillan Magazines Ltd letters to nature 52 NATURE |VOL 401 |2 SEPTEMBER 1999 |www Research Council of Canada, Ottawa, Ontario, Canada K1A 0R6. The vibrational resolution of our photoelectron spectra allows for a direct observation of the underlying nuclear

  7. Canadian Nuclear Astrophysics Institute Letter of Intent

    E-Print Network [OSTI]

    Herwig, Falk

    1 Canadian Nuclear Astrophysics Institute Letter of Intent Final version April 29, 2011), astrophysics and nuclear physics theory and computational simulation (TC) as well as nuclear physics Nuclear astrophysics investigates the origin of the elements in all astrophysical environments, as well

  8. ATMOSPHERIC SCIENCE LETTERS Atmos. Sci. Let. (2013)

    E-Print Network [OSTI]

    Lee, Sukyoung

    2013-01-01

    ATMOSPHERIC SCIENCE LETTERS Atmos. Sci. Let. (2013) Published online in Wiley Online Library Sciences, Seoul National University, Seoul, South Korea *Correspondence to: C. Yoo, Center for Atmosphere). A number of studies have shown that the MJO plays an important role in modulating the extratropical cir

  9. IEEE SIGNAL PROCESSING LETTERS 1 Optimum Update

    E-Print Network [OSTI]

    Girod, Bernd

    energy in motion-compensated predictive cod- ing. The appropriate motion compensation for the update stepIEEE SIGNAL PROCESSING LETTERS 1 Optimum Update for Motion-Compensated Lifting Bernd Girod, Fellow-compensated lifting, the update step typically reverses the motion vectors from the prediction step. Where motion

  10. Academic Integrity: A Letter to My Students

    E-Print Network [OSTI]

    McQuade, D. Tyler

    , or the possibility of advancement, or our esteem in the eyes of others? Personal integrity is not a quality weAcademic Integrity: A Letter to My Students ¹ Here at the beginning of the semester I want to say something to you about academic integrity. I'm deeply convinced that integrity is an essential part of any

  11. Sample Job Offer Letter Best Company, Inc.

    E-Print Network [OSTI]

    Awtar, Shorya

    Sample Job Offer Letter Best Company, Inc. 1553 Job Street, Ann Arbor, MI 48105 (Tel) (734) 000 would like to offer (student's name here) an internship position. Below is the information you requested: 1553 Job Street, Ann Arbor, MI 48105 Number of hours worked per week: 40 Official offer beginning

  12. Bioresponsive Mesoporous Silica Nanoparticles for Triggered Drug Release

    E-Print Network [OSTI]

    Singh, Neetu

    Mesoporous silica nanoparticles (MSNPs) have garnered a great deal of attention as potential carriers for therapeutic payloads. However, achieving triggered drug release from MSNPs in vivo has been challenging. Here, we ...

  13. Light-Triggered Myosin Activation for Probing Dynamic Cellular Processes

    E-Print Network [OSTI]

    Goguen, Brenda N.

    Shining light on myosin: The incorporation of a caging group onto the essential phosphoserine residue of myosin by protein semisynthesis enables light-triggered activation of the protein (see picture). Caging eliminates ...

  14. The run IIb trigger upgrade for the DO experiment

    E-Print Network [OSTI]

    Wilson, Graham Wallace; Padley, P.; Olsen, J.; Narain, M.; Mitrevski, J.; Le Du, P.; Laurens, P.; Johnson, M.; Johns, K.; Hirosky, R.; Hildreth, M.

    2004-06-01

    The increase in instantaneous luminosity anticipated in Run IIb of the Tevatron collider at Fermilab requires increased background rejection capabilities from the trigger system of the DO detector. A set of upgrades is under way to improve...

  15. Studies of the CMS tracker at high trigger rate

    E-Print Network [OSTI]

    Chan, M.

    During the latter months of 2006 and the first half of 2007, the CMS Tracker was assembled and operated at the Tracker Integration Facility at CERN. During this period the performance of the tracker at trigger rates up to ...

  16. Front-end electronics and trigger systems - status and challenges

    E-Print Network [OSTI]

    Spieler, Helmuth G

    2008-01-01

    of the 12th Workshop on Electronics For LHC and Future19-24, 2007 Front-end electronics and trigger systems –about a revolution in front-end electronics for large- scale

  17. Distributed Self-triggered Control for Multi-agent Systems

    E-Print Network [OSTI]

    Dimarogonas, Dimos V.

    It is desirable to limit the amount of communication and computation generated by each agent in a large multi-agent system. Event- and self-triggered control strategies have been recently proposed as alternatives to ...

  18. Controls on earthquake rupture and triggering mechanisms in subduction zones

    E-Print Network [OSTI]

    Llenos, Andrea Lesley

    2010-01-01

    Large earthquake rupture and triggering mechanisms that drive seismicity in subduction zones are investigated in this thesis using a combination of earthquake observations, statistical and physical modeling. A comparison ...

  19. Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc | Department...

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

    Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc More Documents & Publications...

  20. Letter from Commonwealth to Mirant Potomac River Concerning Serious...

    Office of Environmental Management (EM)

    to Mirant Potomac River Concerning Serious Violations of the National Ambient Air Quality Standards for Sulfur Dioxide Letter from Commonwealth to Mirant Potomac River Concerning...

  1. Sample Letter of Inquiry Ready Reference F-4

    E-Print Network [OSTI]

    Sample Letter of Inquiry Ready Reference F-4 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of Engineering, Architecture & Technology Career

  2. Sample Status Inquiry Letter Ready Reference F-9

    E-Print Network [OSTI]

    Sample Status Inquiry Letter Ready Reference F-9 College of Engineering, Architecture & Technology Career Services Oklahoma State University College of College of Engineering, Architecture & Technology

  3. Letter from Plumbing Manufacturers Institute to Department of...

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

    Letter from Plumbing Manufacturers Institute to Department of Energy re: Ex Parte Communication More Documents & Publications Supplemental Comments of the Plumbing Manufacturers...

  4. Letter from Secretary Samuel Bodman's to President of the Senate...

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

    of provisions to facilitate the licensing, construction, and operation of a repository at Yucca Mountain. Letter from Secretary Samuel Bodman's to President of the Senate Richard...

  5. Letter to Congress RE: Office of Civilian Radioactive Waste Management...

    Office of Environmental Management (EM)

    to Congress RE: Office of Civilian Radioactive Waste Management's Annual Financial Report Letter to Congress RE: Office of Civilian Radioactive Waste Management's Annual Financial...

  6. TransmittalLetter.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCEDInstallers/ContractorsPhotovoltaicsState ofSavingsTransmission SEABTransmittalLetter.pdf

  7. Policy Flash 2015-14 - Acquisition Letter 2015-03/Financial Assistance...

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

    Letter 2015-03Financial Acquisition Letter 2015-02 Congressional Notifications and Quarterly Reporting to the Appropriations Committees Subject to Energy and Water Development and...

  8. Post-Closure Inspection Letter Report for Corrective Action Units on the Nevada National Security Site

    SciTech Connect (OSTI)

    Boehlecke, Robert F.

    2013-05-28

    This letter serves as the post-closure inspection letter report for corrective action units on the Nevada Naational Security Site for calendar year 2012.

  9. Policy Flash 2015-14 Acquisition Letter 2015-03/Financial Acquisition...

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

    4 Acquisition Letter 2015-03Financial Acquisition Letter 2015-02 Congressional Notifications and Quarterly Reporting to the Appropriations Committees Subject to Energy and Water...

  10. Policy Flash 2013-64 Acquisition Letter 10 and Class Deviation...

    Energy Savers [EERE]

    64 Acquisition Letter 10 and Class Deviation for Nondisplacement of Qualified Workers Policy Flash 2013-64 Acquisition Letter 10 and Class Deviation for Nondisplacement of...

  11. Policy Flash 2014-29 Acquisition Letter 2014-07 - Benchmark Compensati...

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

    Letter 2014-07 - Benchmark Compensation Amount for Individual Executive Salary Actions Policy Flash 2014-29 Acquisition Letter 2014-07 - Benchmark Compensation Amount for...

  12. Integrated simulation of ELM Triggered by Pellet Through Energy Absorption and Transport Enhancement

    E-Print Network [OSTI]

    Integrated simulation of ELM Triggered by Pellet Through Energy Absorption and Transport Enhancement

  13. Integrated Simulation of ELM Triggered by Pellet through Energy Absorption and Transport Enhancement

    E-Print Network [OSTI]

    Integrated Simulation of ELM Triggered by Pellet through Energy Absorption and Transport Enhancement

  14. Simulation studies of the HADES first level trigger PART II: Performance in hadron induced reactions

    E-Print Network [OSTI]

    R. Schicker; H. Tsertos

    1996-10-03

    The HADES first level trigger is studied for the system p+Ni at a beam energy of 2 AGeV. The timing properties of the trigger signal are reported. The efficiency loss due to deadtime is specified. A trigger requirement of a time overlap window with the start detector is described. The trigger rates for different overlap windows are given.

  15. Mathematics as a Profession: A Letter to Students Hassan Azad

    E-Print Network [OSTI]

    Azad, Hassan

    1 Mathematics as a Profession: A Letter to Students Hassan Azad (This letter was written originally the university with clear ideas about a profession in engineering or business. I have been teaching mathematics obvious mathematical talents. For such students, adopting mathematics as a profession would be more

  16. Final report on LDRD project : advanced optical trigger systems.

    SciTech Connect (OSTI)

    Roose, Lars D.; Hadley, G. Ronald; Mar, Alan; Serkland, Darwin Keith; Geib, Kent Martin; Sullivan, Charles Thomas; Keeler, Gordon Arthur; Bauer, Thomas M. (LMATA Government Services, LLC., Albuquerque, NM); Peake, Gregory Merwin; Loubriel, Guillermo Manuel; Montano, Victoria A. (LMATA Government Services, LLC., Albuquerque, NM)

    2008-09-01

    Advanced optically-activated solid-state electrical switch development at Sandia has demonstrated multi-kA/kV switching and the path for scalability to even higher current/power. Realization of this potential requires development of new optical sources/switches based on key Sandia photonic device technologies: vertical-cavity surface-emitting lasers (VCSELs) and photoconductive semiconductor switch (PCSS) devices. The key to increasing the switching capacity of PCSS devices to 5kV/5kA and higher is to distribute the current in multiple parallel line filaments triggered by an array of high-brightness line-shaped illuminators. Commercial mechanically-stacked edge-emitting lasers have been used to trigger multiple filaments, but they are difficult to scale and manufacture with the required uniformity. In VCSEL arrays, adjacent lasers utilize identical semiconductor material and are lithographically patterned to the required dimensions. We have demonstrated multiple-line filament triggering using VCSEL arrays to approximate line generation. These arrays of uncoupled circular-aperture VCSELs have fill factors ranging from 2% to 30%. Using these arrays, we have developed a better understanding of the illumination requirements for stable triggering of multiple-filament PCSS devices. Photoconductive semiconductor switch (PCSS) devices offer advantages of high voltage operation (multi-kV), optical isolation, triggering with laser pulses that cannot occur accidentally in nature, low cost, high speed, small size, and radiation hardness. PCSS devices are candidates for an assortment of potential applications that require multi-kA switching of current. The key to increasing the switching capacity of PCSS devices to 5kV/5kA and higher is to distribute the current in multiple parallel line filaments triggered by an array of high-brightness line-shaped illuminators. Commercial mechanically-stacked edge-emitting lasers have been demonstrated to trigger multiple filaments, but they are difficult to scale and manufacture with the required uniformity. As a promising alternative to multiple discrete edge-emitting lasers, a single wafer of vertical-cavity surface-emitting lasers (VCSELs) can be lithographically patterned to achieve the desired layout of parallel line-shaped emitters, in which adjacent lasers utilize identical semiconductor material and thereby achieve a degree of intrinsic optical uniformity. Under this LDRD project, we have fabricated arrays of uncoupled circular-aperture VCSELs to approximate a line-shaped illumination pattern, achieving optical fill factors ranging from 2% to 30%. We have applied these VCSEL arrays to demonstrate single and dual parallel line-filament triggering of PCSS devices. Moreover, we have developed a better understanding of the illumination requirements for stable triggering of multiple-filament PCSS devices using VCSEL arrays. We have found that reliable triggering of multiple filaments requires matching of the turn-on time of adjacent VCSEL line-shaped-arrays to within approximately 1 ns. Additionally, we discovered that reliable triggering of PCSS devices at low voltages requires more optical power than we obtained with our first generation of VCSEL arrays. A second generation of higher-power VCSEL arrays was designed and fabricated at the end of this LDRD project, and testing with PCSS devices is currently underway (as of September 2008).

  17. LETTERS TO THE EDITOR This Letters section is for publishing (a) brief acoustical research or applied acoustical reports, (b)

    E-Print Network [OSTI]

    Gerstoft, Peter

    or applied acoustical reports, (b) comments on articles or letters previously published in this Journal, and (c) a reply by the article author to criticism by the Letter author in (b). Extensive reports should to a single fre- quency plane wave. The conventional response is given by2 C = wT Rw, 1 where w

  18. Liquefaction Triggering Evaluations at DOE Sites – An Update

    Broader source: Energy.gov [DOE]

    Liquefaction Triggering Evaluations at DOE Sites – An Update 2014 Natural Phenomena Hazards Meeting October 21-22, 2014 Germantown, Maryland Michael R. Lewis, Bechtel Corporation Michael D. Boone, Bechtel Corporation Rucker J. Williams, Savannah River Nuclear Solutions, LLC Brent Gutierrez, U.S. Department of Energy, Savannah River Site

  19. Hydrothermal venting of greenhouse gases triggering Early Jurassic global warming

    E-Print Network [OSTI]

    Svensen, Henrik

    Hydrothermal venting of greenhouse gases triggering Early Jurassic global warming Henrik Svensen a carbon cycle. The event lasted for approximately 200,000 years and was manifested by a global warming, and the Toarcian global warming. © 2007 Elsevier B.V. All rights reserved. Keywords: climate change; Toarcian

  20. A Fast hardware tracker for the ATLAS Trigger

    E-Print Network [OSTI]

    Pandini, Carlo Enrico; The ATLAS collaboration

    2015-01-01

    The trigger system at the ATLAS experiment is designed to lower the event rate occurring from the nominal bunch crossing at 40 MHz to about 1 kHz for a designed LHC luminosity of 10$^{34}$ cm$^{-2}$ s$^{-1}$. To achieve high background rejection while maintaining good efficiency for interesting physics signals, sophisticated algorithms are needed which require extensive use of tracking information. The Fast TracKer (FTK) trigger system, part of the ATLAS trigger upgrade program, is a highly parallel hardware device designed to perform track-finding at 100 kHz and based on a mixture of advanced technologies. Modern, powerful Field Programmable Gate Arrays (FPGA) form an important part of the system architecture, and the combinatorial problem of pattern recognition is solved by ~8000 standard-cell ASICs named Associative Memories. The availability of the tracking and subsequent vertex information within a short latency ensures robust selections and allows improved trigger performance for the most difficult sign...

  1. A Fast hardware Tracker for the ATLAS Trigger system

    E-Print Network [OSTI]

    Pandini, Carlo Enrico; The ATLAS collaboration

    2015-01-01

    The trigger system at the ATLAS experiment is designed to lower the event rate occurring from the nominal bunch crossing at 40 MHz to about 1 kHz for a designed LHC luminosity of 10$^{34}$ cm$^{-2}$ s$^{-1}$. After a very successful data taking run the LHC is expected to run starting in 2015 with much higher instantaneous luminosities and this will increase the load on the High Level Trigger system. More sophisticated algorithms will be needed to achieve higher background rejection while maintaining good efficiency for interesting physics signals, which requires a more extensive use of tracking information. The Fast Tracker (FTK) trigger system, part of the ATLAS trigger upgrade program, is a highly parallel hardware device designed to perform full-scan track-finding at the event rate of 100 kHz. FTK is a dedicated processor based on a mixture of advanced technologies. Modern, powerful, Field Programmable Gate Arrays form an important part of the system architecture, and the combinatorial problem of pattern r...

  2. Coseismic ionospheric disturbances triggered by the ChiChi earthquake

    E-Print Network [OSTI]

    Chen, Yuh-Ing

    Coseismic ionospheric disturbances triggered by the ChiChi earthquake J. Y. Liu,1,2 H. F. Tsai,3 C on 20 September 1999, a large earthquake of magnitude Mw 7.6 struck the central Taiwan near a small townChi earthquake. When the CIDs travel away from the origin on the Earth surface and then propagate

  3. Thermally Triggered Purification and Immobilization of ElastinOPH Fusions

    E-Print Network [OSTI]

    Chen, Wilfred

    Thermally Triggered Purification and Immobilization of Elastin­OPH Fusions Mark Shimazu,2 Ashok; accepted 5 June 2002 DOI: 10.1002/bit.10446 Abstract: A bifunctional fusion protein consisting of or means of purifying the fusion protein. Over 1,300-fold purification was achieved after only 2 cycles

  4. Substorm triggering by new plasma intrusion: THEMIS allsky imager observations

    E-Print Network [OSTI]

    Mende, Stephen B.

    Click Here for Full Article Substorm triggering by new plasma intrusion: THEMIS allsky imager) and followed by a northsouth (NS) arc moving equatorward toward the onset latitude. Because of the linkage by enhanced earthward plasma flows associated with enhanced reconnection near the preexisting openclosed field

  5. A Fast Hardware Tracker for the ATLAS Trigger System

    E-Print Network [OSTI]

    Mark S. Neubauer; for the ATLAS Collaboration

    2011-10-10

    In hadron collider experiments, triggering the detector to store interesting events for offline analysis is a challenge due to the high rates and multiplicities of particles produced. Maintaining high trigger efficiency for the physics we are most interested in while at the same time suppressing high rate physics from inclusive QCD processes is a difficult but important problem. It is essential that the trigger system be flexible and robust, with sufficient redundancy and operating margin. Providing high quality track reconstruction over the full ATLAS detector by the start of processing at LVL2 is an important element to achieve these needs. As the instantaneous luminosity increases, the computational load on the LVL2 system will significantly increase due to the need for more sophisticated algorithms to suppress backgrounds. The Fast Tracker (FTK) is a proposed upgrade to the ATLAS trigger system. It is designed to enable early rejection of background events and thus leave more LVL2 execution time by moving track reconstruction into a hardware system that takes massively parallel processing to the extreme. The FTK system completes global track reconstruction with near offline resolution shortly after the start of LVL2 processing by rapidly finding and fitting tracks in the inner detector for events passing LVL1 using pattern recognition from a large, pre-computed bank of possible hit patterns. We describe the FTK system design and expected performance in the areas of b-tagging, {\\tau}-tagging, and lepton isolation which play and important role in the ATLAS physics program.

  6. Externally triggered coherent two-photon emission from hydrogen molecules

    E-Print Network [OSTI]

    Yuki Miyamoto; Hideaki Hara; Takahiko Masuda; Noboru Sasao; Minoru Tanaka; Satoshi Uetake; Akihiro Yoshimi; Koji Yoshimura; Motohiko Yoshimura

    2015-05-28

    We report coherent enhancement of two-photon emission from the excited vibrational state of molecular hydrogen triggered by irradiating mid-infrared pulses externally. We previously observed the two-photon emission triggered by the internally generated fourth Stokes photons. By injecting independent mid-infrared pulses externally, it is possible to control experimental parameters and investigate the mechanism in more detail. In this article, we describe the two-photon emission using the external trigger pulses. Its spectrum and dependence on the energy and timing of the trigger pulse are presented along with numerical simulations based on the Maxwell-Bloch equations. The measured number of emitted photons is 6 10^11 photons/pulse and the resulting enhancement factor from the spontaneous emission is more than 10^18. This value is three orders of magnitude higher than that of the previous experiment. External control of emission process is expected to be essential for observation of weaker process of radiative emission of neutrino pair.

  7. Externally triggered coherent two-photon emission from hydrogen molecules

    E-Print Network [OSTI]

    Miyamoto, Yuki; Masuda, Takahiko; Sasao, Noboru; Tanaka, Minoru; Uetake, Satoshi; Yoshimi, Akihiro; Yoshimura, Koji; Yoshimura, Motohiko

    2015-01-01

    We report coherent enhancement of two-photon emission from the excited vibrational state of molecular hydrogen triggered by irradiating mid-infrared pulses externally. We previously observed the two-photon emission triggered by the internally generated fourth Stokes photons. By injecting independent mid-infrared pulses externally, it is possible to control experimental parameters and investigate the mechanism in more detail. In this article, we describe the two-photon emission using the external trigger pulses. Its spectrum and dependence on the energy and timing of the trigger pulse are presented along with numerical simulations based on the Maxwell-Bloch equations. The measured number of emitted photons is 6 10^11 photons/pulse and the resulting enhancement factor from the spontaneous emission is more than 10^18. This value is three orders of magnitude higher than that of the previous experiment. External control of emission process is expected to be essential for observation of weaker process of radiative ...

  8. Nonlinear dynamics, granular media and dynamic earthquake triggering

    E-Print Network [OSTI]

    Paris 7 - Denis Diderot, Université

    triggering appears more commonly in geothermal areas3 . Proposed mecha- nisms include increased pore pressure load corresponding to effective pressure P (effective pressure ¼ confining pressure minus pore pressure, and the pore pressure is 1 atm (0.101 MPa)) ranging from 0.07 to 0.3 MPa is applied to the granular sample

  9. Self-Triggered Control over Wireless Sensor and Actuator Networks

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Self-Triggered Control over Wireless Sensor and Actuator Networks Jos´e Ara´ujo, Adolfo Anta for the sensor and control nodes, thereby reducing energy consumption and increasing network lifetime, without- oped to reduce power consumption in WSNs. Unfortunately, the situation is much less favorable

  10. Analysis of a 10% RPS - Response letter summarizing principal conclusions of supplement

    Reports and Publications (EIA)

    2003-01-01

    Transmittal letter for the supplement to the Service Report 'Analysis of a 10% Renewable Portfolio Standard'.

  11. USRussianLetter.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPPfinal design andBiofuels for MilitaryUSRussianLetter.pdf

  12. Letter report: Cold crucible melter assessment

    SciTech Connect (OSTI)

    Elliott, M.L.

    1996-03-01

    One of the activities of the PNL Vitrification Technology Development (PVTD) Project is to assist the Tank Waste Remediation Systems (TWRS) Program in determining which melter systems should be performance tested for potential implementation in the high-level waste (HLW) vitrification plant. The Richland Operations Office (RL) has recommended that the Cold Crucible Melter (CCM) be evaluated as a candidate ``next generation`` melter. As a result, the CCM System Evaluation cost account was established under the PVTD Project so that the CCM could be initially assessed on a high-priority basis. This letter report summarizes a brief initial review and assessment of the CCM. Using the recommendations made in this document, Westinghouse Hanford Company (WHC) and RL will make a decision regarding the urgency of performance testing the CCM. If the decision is favorable, a subcontract will be negotiated for performance testing of a CCM using Hanford HLW simulants in a pilot-scale facility. Because of the aggressive nature of the schedule, the CCM evaluation was not rigorous. The evaluation consisted of a literature review and interviews with proponents of the technology during a recent trip to France. This letter report summarizes the evaluation and makes recommendations regarding further work in this area.

  13. Evaluation of Light-Triggered Thyristors for Pulsed Power Applications

    SciTech Connect (OSTI)

    Tully, L K; Fulkerson, E S; Goerz, D A; Speer, R D

    2008-05-20

    Lawrence Livermore National Laboratory has many needs for high reliability, high peak current, high di/dt switches. Solid-state switch technology offers the demonstrated advantage of reliability under a variety of conditions. Light-triggered switches operate with a reduced susceptibility to electromagnetic interference commonly found within pulsed power environments. Despite the advantages, commercially available solid-state switches are not typically designed for the often extreme pulsed power requirements. Testing was performed to bound the limits of devices for pulsed power applications beyond the manufacturers specified ratings. To test the applicability of recent commercial light-triggered solid-state designs, an adjustable high current switch test stand was assembled. Results from testing and subsequent selected implementations are presented.

  14. Cite this: RSC Advances, 2013, 3, Water-triggered shape memory of multiblock

    E-Print Network [OSTI]

    Mather, Patrick T.

    Cite this: RSC Advances, 2013, 3, 15783 Water-triggered shape memory of multiblock thermoplastic of a water-triggered shape memory polymer (SMP) family, PCL­PEG based thermoplastic polyurethanes (TPUs

  15. Design and performance of the ATLAS jet trigger system

    E-Print Network [OSTI]

    Tavares Delgado, Ademar; The ATLAS collaboration

    2015-01-01

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

  16. ATLAS Jet Trigger Update for the LHC Run II

    E-Print Network [OSTI]

    Tavares Delgado, Ademar; The ATLAS collaboration

    2015-01-01

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

  17. Enforcement Letter, NEL-2013-02 - February 12, 2013 | Department...

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

    NEL-2013-02 - February 12, 2013 Enforcement Letter, NEL-2013-02 - February 12, 2013 February 12, 2013 Issued to Los Alamos National Security, LLC related to a Radiological...

  18. 4 December 1998 Z .Chemical Physics Letters 297 1998 357364

    E-Print Network [OSTI]

    Tretiak, Sergei

    4 December 1998 Z .Chemical Physics Letters 297 1998 357­364 R eal-Space Analysis of Electronic's biosphere harvests the sunlight energy. The primary pigments of photosynthesis are porphyrins [1]. Because

  19. Enforcement Letter, Lockheed Martin Energy Systems, Inc. - September...

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

    to Lockheed Martin Energy Systems, Inc. related to the improper transfer of mixed waste ash from K-25 to a landfill at Y-12 for disposal. Enforcement Letter, Lockheed Martin...

  20. Parallel Processing Letters fc World Scientific Publishing Company

    E-Print Network [OSTI]

    Mavronicolas, Marios

    Parallel Processing Letters fc World Scientific Publishing Company THE PRICE OF ANARCHY of Computer Science, Electrical Engineering and Mathematics, University of Paderborn, D-33102 Paderborn, Germany § Department of Computer Science, University of Cyprus, Nicosia CY-1678, Cyprus Received (received

  1. GEOPHYSICAL RESEARCH LETTERS Supporting Information for "Eddy-mediated

    E-Print Network [OSTI]

    Stewart, Andrew

    GEOPHYSICAL RESEARCH LETTERS Supporting Information for "Eddy-mediated transport of warm, and over- turning circulation. 1 Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, California, USA. 2 Environmental Sciences and Engineering, California

  2. 11 February 1999 Z .Physics Letters B 447 1999 240245

    E-Print Network [OSTI]

    11 February 1999 Z .Physics Letters B 447 1999 240­245 0 Search for the decay K TMp nnL KTe@fnal.gov 0370-2693r99r$ - see front matter q 1999 Published by Elsevier Science B.V. All rights reserved. Z .PII: S0370-2693 98 01593-7 #12;( )J. Adams et al.rPhysics Letters B 447 1999 240­245 241 j Rutgers Uni

  3. High voltage switch triggered by a laser-photocathode subsystem

    DOE Patents [OSTI]

    Chen, Ping; Lundquist, Martin L.; Yu, David U. L.

    2013-01-08

    A spark gap switch for controlling the output of a high voltage pulse from a high voltage source, for example, a capacitor bank or a pulse forming network, to an external load such as a high gradient electron gun, laser, pulsed power accelerator or wide band radar. The combination of a UV laser and a high vacuum quartz cell, in which a photocathode and an anode are installed, is utilized as triggering devices to switch the spark gap from a non-conducting state to a conducting state with low delay and low jitter.

  4. High-Power Microwave Switch Employing Electron Beam Triggering

    SciTech Connect (OSTI)

    Jay L. Hirshfield

    2012-09-19

    A high-power active microwave pulse compressor is described that modulates the quality factor Q of the energy storage cavity by a new means involving mode conversion controlled by a triggered electron-beam discharge through a switch cavity. The electron beam is emitted from a diamond-coated molybdenum cathode. This report describes the principle of operation, the design of the switch, the configuration used for the test, and the experimental results. The pulse compressor produced output pulses with 140 - Ã?Â?165 MW peak power, power gain of 16 - 20, and pulse duration of 16 - 20 ns at a frequency of 11.43 GHz.

  5. Calorimetry Triggering in ATLAS (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing Bacteria (TechnicalTransmission, Distributioncoupled-channelsCalorimetry Triggering in

  6. POLICY FLASH 2015-31 - Acquisition Letter No. AL 2015-07, Performance...

    Office of Environmental Management (EM)

    1 - Acquisition Letter No. AL 2015-07, Performance of Inherently Governmental and Critical Functions POLICY FLASH 2015-31 - Acquisition Letter No. AL 2015-07, Performance of...

  7. Policy Flash 2015-05 - Acquisition Letter 2015-02 - Revision...

    Office of Environmental Management (EM)

    5 - Acquisition Letter 2015-02 - Revision of DOE O 350.1 and Special H Clause Policy Flash 2015-05 - Acquisition Letter 2015-02 - Revision of DOE O 350.1 and Special H Clause DATE:...

  8. 2014-02 Acquistion Letter 2014-01: Management and Operating Contractor...

    Energy Savers [EERE]

    2014-02 Acquistion Letter 2014-01: Management and Operating Contractors' Audit Coverage of Cost-Reimbursement Subcontracts 2014-02 Acquistion Letter 2014-01: Management and...

  9. Microsoft Word - AL 2010-07 Acquistion Letters Remaining in Effect...

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

    2010-07 Acquistion Letters Remaining in Effect May 2010 revision 1 June 2010 Microsoft Word - AL 2010-07 Acquistion Letters Remaining in Effect May 2010 revision 1 June 2010...

  10. A Solar Coronal Jet Event Triggers A Coronal Mass Ejection

    E-Print Network [OSTI]

    Liu, Jiajia; Shen, Chenglong; Liu, Kai; Pan, Zonghao; Wang, S

    2015-01-01

    We present the multi-point and multi-wavelength observation and analysis on a solar coronal jet and coronal mass ejection (CME) event in this paper. Employing the GCS model, we obtained the real (three-dimensional) heliocentric distance and direction of the CME and found it propagate in a high speed over 1000 km/s . The jet erupted before and shared the same source region with the CME. The temporal and spacial relation- ship between them guide us the possibility that the jet triggered the CME and became its core. This scenario could promisingly enrich our understanding on the triggering mechanism of coronal mass ejections and their relations with coronal large-scale jets. On the other hand, the magnetic field configuration of the source region observed by the SDO/HMI instrument and the off- limb inverse Y-shaped configuration observed by SDO/AIA 171 A passband, together provide the first detailed observation on the three-dimensional reconnection process of large-scale jets as simulated in Pariat et al. 2009. ...

  11. Inertial confinement fusion based on the ion-bubble trigger

    SciTech Connect (OSTI)

    Jafari, S. Nilkar, M.; Ghasemizad, A.; Mehdian, H.

    2014-10-15

    Triggering the ion-bubble in an inertial confinement fusion, we have developed a novel scheme for the fast ignition. This scheme relies on the plasma cavitation by the wake of an intense laser pulse to generate an ion-bubble. The bubble acts both as an intense electron accelerator and as an electron wiggler. Consequently, the accelerated electrons trapped in the bubble can emit an intense tunable laser light. This light can be absorbed by an ablation layer on the outside surface of the ignition capsule, which subsequently drills it and thereby produces a guide channel in the pellet. Finally, the relativistic electron beam created in the bubble is guided through the channel to the high density core igniting the fusion fuel. The normalized beam intensity and beam energy required for triggering the ignition have been calculated when core is heated by the e-beam. In addition, through solving the momentum transfer, continuity and wave equations, a dispersion relation for the electromagnetic and space-charge waves has been analytically derived. The variations of growth rate with the ion-bubble density and electron beam energy have been illustrated. It is found that the growth rates of instability are significantly controlled by the ions concentration and the e-beam energy in the bubble.

  12. Secretary Chu Letter to 2nd US-China EE Forum

    Broader source: Energy.gov [DOE]

    English and Chinese translation of Secretary Chu's letter to participants in the 2nd US-China EE Forum.

  13. Letter to Chairman Darrell Issa from Eric Fygi, Deputy General Counsel-- July 24, 2013

    Broader source: Energy.gov [DOE]

    On July 24, 2013, Energy Department Deputy General Counsel Eric Fygi sent this letter to Chairman Darrell Issa.

  14. The Trigger System for the External Target Experiment in CSR of HIRFL

    E-Print Network [OSTI]

    Min Li; Lei Zhao; Jin Xin Liu; Yi Ming Lu; Shu Bin Liu; Qi An

    2015-12-16

    A trigger system was designed for the external target experiment in the Cooling Storage Ring (CSR) of the Heavy Ion Research Facility in Lanzhou (HIRFL). Considering that different detectors are scattered in a large area, the trigger system is designed based on a master-slave structure and fiber-based serial data transmission technique. The trigger logic is organized in hierarchies, and flexible reconfiguration of the trigger function is achieved based on command register access or overall field-programmable gate array (FPGA) logic on-line reconfiguration controlled by remote computers. We also conducted tests to confirm the function of the trigger electronics, and the results indicate that this trigger system works well.

  15. Superconducting FCL using a combined inducted magnetic field trigger and shunt coil

    DOE Patents [OSTI]

    Tekletsadik, Kasegn D. (Rexford, NY)

    2007-10-16

    A single trigger/shunt coil is utilized for combined induced magnetic field triggering and shunt impedance. The single coil connected in parallel with the high temperature superconducting element, is designed to generate a circulating current in the parallel circuit during normal operation to aid triggering the high temperature superconducting element to quench in the event of a fault. The circulating current is generated by an induced voltage in the coil, when the system current flows through the high temperature superconducting element.

  16. Very low pressure high power impulse triggered magnetron sputtering

    DOE Patents [OSTI]

    Anders, Andre; Andersson, Joakim

    2013-10-29

    A method and apparatus are described for very low pressure high powered magnetron sputtering of a coating onto a substrate. By the method of this invention, both substrate and coating target material are placed into an evacuable chamber, and the chamber pumped to vacuum. Thereafter a series of high impulse voltage pulses are applied to the target. Nearly simultaneously with each pulse, in one embodiment, a small cathodic arc source of the same material as the target is pulsed, triggering a plasma plume proximate to the surface of the target to thereby initiate the magnetron sputtering process. In another embodiment the plasma plume is generated using a pulsed laser aimed to strike an ablation target material positioned near the magnetron target surface.

  17. Superconducting matrix fault current limiter with current-driven trigger mechanism

    DOE Patents [OSTI]

    Yuan; Xing (Albany, NY)

    2008-04-15

    A modular and scalable Matrix-type 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. An inductor is connected in series with the trigger superconductor in the trigger matrix and physically surrounds the superconductor. The current surge during a fault will generate a trigger magnetic field in the series inductor to cause fast and uniform quenching of the trigger superconductor to significantly reduce burnout risk due to superconductor material non-uniformity.

  18. Atomic trigger shatters mystery of how glass deforms | ornl.gov

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

    Atomic trigger shatters mystery of how glass deforms Bond switching underpins warping of strong metallic glasses Joint Institute for Neutron Sciences Director Takeshi Egami, left,...

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    Letter Report RELATIVE BIOLOGICAL EFFECTIVENESS OF LOWENERGY ELECTRONS for electrons and photons based on the cumulative fraction of absorbed dose below 5 keV. The approach is empirical and employs Monte Carlo simulation of individual electron tracks passing through the absorbing

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    Liu, Jie

    26 May 2000 Z .Chemical Physics Letters 322 2000 321­326 www.elsevier.nlrlocatercplett A scalable 2000; in final form 20 March 2000 Abstract Z .Single-walled carbon nanotubes SWNT are known to possess is greater than 200% the weight of the catalysts. q 2000 Elsevier Science B.V. All rights reserved. 1

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    Agmon, Noam

    17 March 2000 Z .Chemical Physics Letters 319 2000 247­252 www.elsevier.nlrlocatercplett Mechanism, The Hebrew UniÕersity, Jerusalem 91904, Israel Received 29 November 1999; in final form 15 January 2000, can be rationalized in the framework of the above model. q 2000 Elsevier Science B.V. All rights

  2. 21 April 2000 Z .Chemical Physics Letters 321 2000 4348

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    Hong, Mei

    21 April 2000 Z .Chemical Physics Letters 321 2000 43­48 www and Engineering, UniÕersity of Massachusetts, Amherst, MA 01003, USA Received 27 January 2000; in final form 6 March 2000 Abstract A solid-state NMR exchange technique for detecting slow segmental dynamics

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    17 April 2000 Z .Physics Letters A 268 2000 241­246 www.elsevier.nlrlocaterphysleta Isotropic phase 23 December 1999; accepted 9 March 2000 Communicated by P.R. Holland Abstract We prove that isotropic squeezing of the phase is equivalent to reversing the arrow of time. q 2000 Published by Elsevier Science B

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    7 April 2000 Z .Chemical Physics Letters 320 2000 262­268 www.elsevier.nlrlocatercplett Dual Received 6 December 1999; in final form 4 February 2000 Abstract The kinetics of excited-state proton for this diffusion-in- fluenced reaction. q 2000 Elsevier Science B.V. All rights reserved. 1. Introduction The study

  6. 12 May 2000 Z .Chemical Physics Letters 322 2000 111118

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    Augustine, Mathew P.

    12 May 2000 Z .Chemical Physics Letters 322 2000 111­118 www.elsevier.nlrlocatercplett Noise Departments of Chemistry and Physics, UniÕersity of California, Berkeley, CA 94720, USA Received 14 March 2000; in final form 23 March 2000 Abstract Spontaneous radiation damping in nuclear magnetic resonance

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    10 April 2000 Z .Physics Letters A 268 2000 151­157 www.elsevier.nlrlocaterphysleta Universal 2000; accepted 28 February 2000 Communicated by P.R. Holland Abstract A general method is presented which apply to different physical contexts. q 2000 Elsevier Science B.V. All rights reserved. PACS: 03

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    Butler, Laurie J.

    14 April 2000 Z .Chemical Physics Letters 320 2000 499­506 www.elsevier.nlrlocatercplett A combined, Albuquerque, NM 87131-1096, USA Received 12 October 1999; in final form 24 February 2000 Abstract ~ 1 Z and agree well with an earlier experiment. q 2000 Elsevier Science B.V. All rights reserved. 1. Introduction

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    1 September 2000 Z .Chemical Physics Letters 327 2000 69­75 www.elsevier.nlrlocatercplett Enhanced and Astronomy, UniÕersity of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA Received 9 May 2000; in final form 13 July 2000 Abstract Z .The effects of processing on the structure and morphology of single

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    17 July 2000 Z .Physics Letters A 272 2000 32­38 www.elsevier.nlrlocaterpla Bell measurements Studi di PaÕia and INFM Unita di PaÕia, Õia A. Bassi 6, I-27100 PaÕia, Italy` ` Received 27 April 2000; received in revised form 30 May 2000; accepted 12 June 2000 Communicated by P.R. Holland Abstract A general

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    11 August 2000 Z .Chemical Physics Letters 326 2000 1­10 www.elsevier.nlrlocatercplett Imaging-2025, USA Received 20 April 2000; in final form 7 June 2000 The memory of Kent R. Wilson, one of whose many-frequency plane. We illustrate this for the rovibronic coherence of molecular iodine in the gas phase. q 2000

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    1 September 2000 Z .Chemical Physics Letters 327 2000 38­44 www.elsevier.nlrlocatercplett Event of Technology, Cambridge, MA 02139, USA Received 14 April 2000; in final form 5 July 2000 Abstract A modulated N function reveals the nature of conformational landscapes. q 2000 Elsevier Science B.V. All rights reserved

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    26 May 2000 Z .Chemical Physics Letters 322 2000 351­357 www.elsevier.nlrlocatercplett Classical March 2000 Abstract Intramolecular dynamics of HOD was investigated by the classical trajectory method and mode selective chemistry is discussed. q 2000 Elsevier Science B.V. All rights reserved. 1

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    22 September 2000 Z .Chemical Physics Letters 328 2000 129­134 www 2000; in final form 29 June 2000 Abstract We have developed a method to observe the destruction rate constants. q 2000 Elsevier Science B.V. All rights reserved. 1. Introduction Hollow cathode and positive

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    11 September 2000 Z .Physics Letters A 274 2000 64­68 www.elsevier.nlrlocaterpla Effect of quantumÕersity, Department of Astrophysical Sciences, Princeton, N.J. 08540, USA Received 16 March 2000; received in revised form 21 July 2000; accepted 21 July 2000 Communicated by M. Porkolab Abstract w Z . x

  16. 4 August 2000 Z .Chemical Physics Letters 325 2000 619626

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    Fayer, Michael D.

    4 August 2000 Z .Chemical Physics Letters 325 2000 619­626 www, Indian Institute of Science, Bangalore-560034, India Received 7 April 2000; in final form 2 June 2000, in agreement with theoretical calculations. q 2000 Published by Elsevier Science B.V. 1. Introduction

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    Mukamel, Shaul

    1 September 2000 Z .Chemical Physics Letters 327 2000 29­37 www.elsevier.nlrlocatercplett Coherent, UniÕersity of Rochester, Rochester, NY 14627, USA Received 1 February 2000; in final form 7 June 2000. The sensitivity of the density matrix to the parameters is demonstrated. q 2000 Published by Elsevier Science B

  18. 31 March 2000 Z .Chemical Physics Letters 320 2000 186193

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    Truong, Thanh N.

    31 March 2000 Z .Chemical Physics Letters 320 2000 186­193 www.elsevier.nlrlocatercplett Liquid 1999; in final form 22 January 2000 Abstract Z .We calculated the structure of water in contact as a constituent of a self-consistent description of chemical processes at a metal oxide­water interface. q 2000

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    7 April 2000 Z .Chemical Physics Letters 320 2000 339­344 www.elsevier.nlrlocatercplett SpatialÕersity, Stanford CA 94305, USA Received 22 February 2000 Abstract Spatial concentration and temperature profiles x w xfilament the H r H ratio is determined to be 0.011"0.003. q 2000 Elsevier Science B.V. All

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    30 June 2000 Z .Chemical Physics Letters 324 2000 101­107 www.elsevier.nlrlocatercplett Ab 2000; in final form 10 May 2000 Abstract The shifted-contour auxiliary field Monte Carlo method applied the error bars. Several theoretical and methodological issues are discussed. q 2000 Elsevier Science B

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    Wang, Zhong L.

    7 April 2000 Z .Chemical Physics Letters 320 2000 365­372 www.elsevier.nlrlocatercplett Synthesis UniÕersity, Beijing 100 871, China Received 4 January 2000; in final form 10 February 2000 Abstract and that there are intrinsic links between tubes in as-grown mats. q 2000 Elsevier Science B.V. All rights reserved. 1

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    22 May 1998 Z .Chemical Physics Letters 288 1998 487­493 z 3 /Endoergic reactions of hyperthermal C P with methane and acetylene M.R. Scholefield, J.-H. Choi 1 , S. Goyal 2 , H. Reisler Department probing the CH product via laser induced fluores- Z . w xcence LIF 4 . Based on theoretical investigations

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    predict the initial mode of motion. We also find that the initial motion occurs through the formation attention is the mechanism of initiation of motion when subjected to mechanical load. In this letter, we or soft mode immediately prior to initiation of motion. Additionally, a number of higher modes are coupled

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    1 April 1999 Z .Physics Letters B 451 1999 140­145 The exact formula for neutrino oscillations Massimo Blasone a,c,d,1 , Peter A. Henning b,2 , Giuseppe Vitiello c,3 a Blackett Laboratory, Imperial October 1998; received in revised form 16 January 1999 Editor: L. Alvarez-Gaume´ Abstract We present

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    4 November 1999 Z .Physics Letters B 466 1999 262­266 Berry phase for oscillating neutrinos Massimo Blasone a,c,d,1 , Peter A. Henning b,2 , Giuseppe Vitiello c,3 a Blackett Laboratory, Imperial College Salerno, Italy` d Unita INFM di Salerno, I-84100 Salerno, Italy` Received 25 February 1999; received

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    SAMPLE COVER LETTER for BIOTECH INTERNSHIP Aaron Smith 12 Echo Street Cambridge, MA 55555 September 14, 20xx Ms. Caroline Burnett Boston Biotech Company Somewhere, MA 55555 Dear Ms. Burnett job listings at the Brandeis University Career Center. Boston Biotech is a leader in the advancement

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    Vermont, University of

    population's information about the world, especially when it comes to ecosystem services, is extremelyLetter to the Editor Ecosystem services: Multiple classification systems are needed In a recent to enrich our thinking about ecosystem services rather than a problem to be defined away. Let us start

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    of Geo-Marine Letters, pre- senting contributions from the 10th International Conference on Gas in Marine Sediments (September 2010, Lake Baikal, Russia), to the memory of Mikhail Konstantinovich Ivanov. The author professor and simply a great man. He built such a fantastic program (TTR) when Russia was facing so many

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    Princeton Plasma Physics Laboratory

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    Miska, Eric

    in the Perkin­Elmer model 9600 thermocycler. PCR products were purified with the QIAEX II gel extraction kitNature © Macmillan Publishers Ltd 1998 8 letters to nature NATURE |VOL 391 |5 FEBRUARY 1998 597- round PCR products (4 l) were used in a second-round PCR to amplify specific HIV-1 regions with primer

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    Fayer, Michael D.

    23 April 1999 Z .Chemical Physics Letters 304 1999 28­34 Density-induced heterodyne ) Department of Chemistry, Stanford UniÕersity, Stanford, CA 94305, USA Received 26 January 1999; in final form 25 February 1999 Abstract Z .A new time-domain method, density-induced heterodyne

  16. 4 June 1999 Z .Chemical Physics Letters 306 1999 4852

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    Neumark, Daniel M.

    4 June 1999 Z .Chemical Physics Letters 306 1999 48­52 Cly electron photodetachment spectrumÕision, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA Received 25 January 1999; in final form 15 March 1999 Abstract y Z .An electron photodetachment spectrum of Cl is reported for 193 nm 6.42 e

  17. 29 October 1999 Z .Chemical Physics Letters 312 1999 399406

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    Fayer, Michael D.

    29 October 1999 Z .Chemical Physics Letters 312 1999 399­406 www.elsevier.nlrlocatercplett Non Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Received 12 July 1999; in final form 13 August 1999 Abstract Z . Z y1.The intramolecular vibrational dynamics of the asymmetric CO

  18. 19 July 1999 Z .Physics Letters A 258 1999 145148

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    Fajans, Joel

    19 July 1999 Z .Physics Letters A 258 1999 145­148 www.elsevier.nlrlocaterphysleta Plasma shielding, UniÕersity of California at Berkeley, Berkeley, CA 94720-7300, USA Received 18 May 1999; accepted 25 May 1999 Communicated by M. Porkolab Abstract The common textbook derivation of collisionless plasma

  19. 19 November 1999 Z .Chemical Physics Letters 313 1999 812819

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    Faeder, Jim

    19 November 1999 Z .Chemical Physics Letters 313 1999 812­819 www.elsevier.nlrlocatercplett Spin, Boulder, CO 80309-0440, USA Received 4 March 1999; in final form 14 July 1999 Abstract We investigate this approximation justified at characteristic van der Waals distances. q 1999 Elsevier Science B.V. All rights

  20. 1 January 1999 Z .Chemical Physics Letters 299 1999 8490

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    Fayer, Michael D.

    1 January 1999 Z .Chemical Physics Letters 299 1999 84­90 Nitro group asymmetric stretching mode pathway that does not involve low-frequency modes. q 1999 Elsevier Science B.V. All rights reserved. 1 of the initially excited mode depends on the 0009-2614r99r$ - see front matter q 1999 Elsevier Science B.V. All

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    Kais, Sabre

    28 May 1999 Z .Chemical Physics Letters 305 1999 433­438 Pivot method for global optimization UniÕersity, West Lafayette, IN 47907, USA Received 10 February 1999; in final form 1 April 1999 an apparent asymptotic behavior. q 1999 Elsevier Science B.V. All rights reserved. 1. Introduction Water

  2. 16 April 1999 Z .Chemical Physics Letters 303 1999 657663

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    Honvault, Pascal

    16 April 1999 Z .Chemical Physics Letters 303 1999 657­663 Effect of spin­orbit corrections Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France´ Received 25 January 1999; in final form 9 February 1999 Abstract Accurate three-dimensional quantum-mechanical calculations have been carried out

  3. 10 December 1999 Z .Chemical Physics Letters 314 1999 529533

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    Truong, Thanh N.

    10 December 1999 Z .Chemical Physics Letters 314 1999 529­533 www, UniÕersity of Utah, 315 S 1400 E, Room Dock, Salt Lake City, UT 84112, USA Received 21 July 1999; in final form 13 September 1999 Abstract Z .We investigate the use of the reaction-class approach within

  4. 25 June 1999 Z .Chemical Physics Letters 307 1999 4147

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    Frydman, Lucio

    25 June 1999 Z .Chemical Physics Letters 307 1999 41­47 Sensitivity enhancement of the MQMAS NMR-7061, USA Received 11 January 1999; in final form 13 April 1999 Abstract Z .We report here an improved way and 87 Rb nuclei as examples are presented that corroborate the usefulness of this approach. q 1999

  5. 30 April 1999 Z .Chemical Physics Letters 304 1999 258264

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    Truong, Thanh N.

    30 April 1999 Z .Chemical Physics Letters 304 1999 258­264 An approach for inclusion of crystalÕersity of Utah, Salt Lake City, UT 84112, USA Received 25 September 1998; in final form 25 January 1999 AbstractF crystal have been considered as test cases for the proposed2 method. q 1999 Elsevier Science B.V. All

  6. 12 Novermber 1999 Z .Chemical Physics Letters 313 1999 592599

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    Fayer, Michael D.

    12 Novermber 1999 Z .Chemical Physics Letters 313 1999 592­599 www, India Received 23 June 1999; in final form 13 September 1999 Abstract Z y1. Z .The vibrational lifetimes to be good. q 1999 Elsevier Science B.V. All rights reserved. 1. Introduction Z .The vibrational lifetime

  7. 28 June 1999 Z .Physics Letters A 257 1999 132138

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    Vilela Mendes, Rui

    28 June 1999 Z .Physics Letters A 257 1999 132­138 Clustering and synchronization with positive Lisboa, AÕ. Gama Pinto, 2 - P1699 Lisboa Codex, Portugal´ ´ Received 6 January 1999; received in revised form 12 April 1999; accepted 14 May 1999 Communicated by A.R. Bishop Abstract Clustering

  8. 24 Septenber 1999 Z .Chemical Physics Letters 311 1999 241247

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    Farantos, Stavros C.

    24 Septenber 1999 Z .Chemical Physics Letters 311 1999 241­247 www, Albuquerque, NM 87131, USA Received 17 June 1999 Abstract The bifurcation diagrams of periodic orbits stretch family turns from stable to unstable and new local-type periodic orbits are generated. q 1999

  9. 14 May 1999 Z .Chemical Physics Letters 305 1999 5156

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    Fayer, Michael D.

    14 May 1999 Z .Chemical Physics Letters 305 1999 51­56 T selective scanning vibrational echo Laser Center, Stanford UniÕersity, Stanford, CA 94305, USA Received 27 January 1999; in final form 12 March 1999 Abstract Z Z . . Z . Z .Experiments are presented on a mixture of tungsten hexacarbonyl W CO

  10. 30 July 1999 Z .Chemical Physics Letters 308 1999 347354

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    Neumark, Daniel M.

    30 July 1999 Z .Chemical Physics Letters 308 1999 347­354 www.elsevier.nlrlocatercplett Electronic, Berkeley, CA 94720, USA Received 13 April 1999; in final form 11 June 1999 Abstract Z .Photoelectron between the experimental EAs and those derived from calculations on quantum dots is found. q 1999 Elsevier

  11. 26 March 1999 Z .Chemical Physics Letters 302 1999 399404

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    Agmon, Noam

    26 March 1999 Z .Chemical Physics Letters 302 1999 399­404 Kinetic transition in excited February 1999 Abstract We demonstrate that reversible reactions occurring in the excited electronic state-influenced reversible geminate dissociation reactions in solution, which becomes exact at long times. q 1999 Elsevier

  12. 23 July 1999 Z .Chemical Physics Letters 308 1999 263266

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    Enderlein, Jörg

    23 July 1999 Z .Chemical Physics Letters 308 1999 263­266 www 42, D-93040 Regensburg, Germany Received 19 April 1999 Abstract The apparent fluorescence intensity and Yeung Science 281 1998 1650 . q 1999 Elsevier Science B.V. All rights reserved. 1. Introduction w x

  13. 29 October 1999 Z .Chemical Physics Letters 312 1999 606612

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    Cao, Jianshu

    29 October 1999 Z .Chemical Physics Letters 312 1999 606­612 www, Massachusetts Institute of Technology, Cambridge, MA 01239, USA Received 28 January 1999; in final form 21 June 1999 Abstract An adiabatic picture is proposed to analyze short-time electronic coherence and dephasing

  14. 19 July 1999 Z .Physics Letters A 258 1999 103114

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    Hively, Lee M.

    19 July 1999 Z .Physics Letters A 258 1999 103­114 www.elsevier.nlrlocaterphysleta Detecting Laboratory, P.O. Box 2009, Oak Ridge, TN 37831-8066, USA Received 23 February 1999; received in revised form 19 May 1999; accepted 19 May 1999 Communicated by C.R. Doering Abstract We present a robust, model

  15. 18 June 1999 Z .Chemical Physics Letters 306 1999 226232

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    Reid, Scott A.

    18 June 1999 Z .Chemical Physics Letters 306 1999 226­232 A theoretical description of multi, UniÕersite Paris-Sud XI, F-91405´ ´ ^ ´ Orsay Cedex, France Received 10 March 1999; in final form 28 March 1999 Abstract q Z .Fragmentation of the Na cluster-ion in collision with He in the 100 eV centre

  16. November 1999 Z .Materials Letters 41 1999 128134

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    North Texas, University of

    November 1999 Z .Materials Letters 41 1999 128­134 www.elsevier.comrlocatermatlet Synthesis 76203-5310, USA Received 27 November 1998; received in revised form 20 May 1999; accepted 21 May 1999-ray diffraction and scanning electron microscopy SEM . q 1999 Elsevier Science B.V. All rights reserved. Keywords

  17. 10 December 1999 Z .Chemical Physics Letters 314 1999 389395

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    Levis, Robert J.

    10 December 1999 Z .Chemical Physics Letters 314 1999 389­395 www ) Department of Chemistry, Cambridge UniÕersity, Lensfield Road, Cambridge CB2 1EW, UK Received 3 August 1999; in final form 11 October 1999 Abstract Z 12 y2 . Ä 4The intense 10 W cm , 800 nm near-infrared laser

  18. 26 March 1999 Z .Chemical Physics Letters 302 1999 595601

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    Farantos, Stavros C.

    26 March 1999 Z .Chemical Physics Letters 302 1999 595­601 Coordination of Ti cation embedded Received 15 December 1998; in final form 12 January 1999 Abstract A laser vaporisation source and a time a regular6 octahedron. q 1999 Elsevier Science B.V. All rights reserved. 1. Introduction Metal-doped noble

  19. 18 June 1999 Z .Chemical Physics Letters 306 1999 335340

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    18 June 1999 Z .Chemical Physics Letters 306 1999 335­340 Two- to three-dimensional transition 28 September 1998; in final form 20 April 1999 Abstract Z . Z .The complex phase transitions, which can be considered as a two- to three-dimensional transition intermediate, is identified. q 1999

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    12-MONTH SAMPLE OFFER LETTER VISITING TEACHING FACULTY I, RESEARCH FACULTY I, INSTRUCTIONAL SPECIALIST I OR ASSOCIATE IN RESEARCH APPOINTMENT Dear Dr. xxx: I am pleased to offer you a visiting://facultyhandbook.fsu.edu). This offer is also contingent upon your providing the necessary documents to prove your identity

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    #12;SAMPLE LETTER ACCEPTING OFFER #1 NAME ADDRESS TELEPHONE EMAIL October 10, 2014 Mr. Richard 20000 Dear Mr. Cunningham: Thank you for your offer of summer employment with the Civil Rights Division of the United States Department of Justice. I am pleased to accept your offer at a salary of $1,200.00 per week

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    Moiseyev, Nimrod

    stable with respect to change in the kinetic energy of the wave-packet than other commonly used monomial22 May 1998 Z .Chemical Physics Letters 288 1998 413­417 Motion of wave-packets using the smooth of Nonlinear Physics in Complex Systems, Technion ­ Israel Institute of Technology, Haifa 32000,Israel Received

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    , we present a com- plete investigation of the fragmentation pathways including the kinematic analysis18 June 1999 Z .Chemical Physics Letters 306 1999 233­238 Complete analysis of the Naq form 22 April 1999 Abstract An experimental investigation of the fragmentation mechanisms of Naq

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    Black, Alan W; Lenzo, Kevin; Pagel, Vincent

    for building letter to sound (LTS) rules from a word list in a language. The technique can be fully automatic, though a small amount of hand seeding can give better results. We have applied this technique to English (UK and US), French and German. The generated...

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    Triggers: A Dynamic Approach to Testing Multiuser Software Robert F. Dugan Jr., Ephraim P. Glinert or CSCW software. We have de- veloped CAMELOT [4], a technology-focused methodology for testing CSCW¡ @cs.rpi.edu ABSTRACT In this paper we describe triggers, a novel technique for test- ing multiuser

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    Lemmon, Michael

    Optimal power flow in microgrids using event-triggered optimization Pu Wan and Michael D. Lemmon Abstract-- Microgrids are power generation and distribution systems in which users and generators-triggered distributed optimization algorithm to solve the optimal power flow (OPF) problem in microgrids. Under event

  10. Ultra-Low Voltage VCO Design Using Schmitt Trigger on SOI

    E-Print Network [OSTI]

    Ayers, Joseph

    Ultra-Low Voltage VCO Design Using Schmitt Trigger on SOI Kyung Ki Kim Department of Electrical trigger and an ultra low voltage current source on PD-SOI with low temperature and supply voltage oscillator based VCOs on SOI CMOS [4][5] have been reported. However, VCO with ultra low voltage less than 0

  11. Testing and Performance of UFFO Burst Alert & Trigger Telescope

    E-Print Network [OSTI]

    Ripa, J; Lee, J; Park, I H; Kim, J E; Lim, H; Jeong, S; Castro-Tirado, A J; Connell, P H; Eyles, C; Reglero, V; Rodrigo, J M; Bogomolov, V; Panasyuk, M I; Petrov, V; Svertilov, S; Yashin, I; Brandt, S; Budtz-Jorgensen, C; Chang, Y -Y; Chen, P; Huang, M A; Liu, T -C; Nam, J W; Wang, M -Z; Chen, C R; Choi, H S; Kim, S -W; Min, K W

    2015-01-01

    The Ultra-Fast Flash Observatory pathfinder (UFFO-p) is a new space mission dedicated to detect Gamma-Ray Bursts (GRBs) and rapidly follow their afterglows in order to provide early optical/ultraviolet measurements. A GRB location is determined in a few seconds by the UFFO Burst Alert & Trigger telescope (UBAT) employing the coded mask imaging technique and the detector combination of Yttrium Oxyorthosilicate (YSO) scintillating crystals and multi-anode photomultiplier tubes. The results of the laboratory tests of UBAT's functionality and performance are described in this article. The detector setting, the pixel-to-pixel response to X-rays of different energies, the imaging capability for rays, the localization accuracy measurements, and the combined test with the Block for X-ray and Gamma-Radiation Detection (BDRG) scintillator detector to check the efficiency of UBAT are all described. The UBAT instrument has been assembled and integrated with other equipment on UFFO-p and should be launche...

  12. Directory

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

    Fact Sheets, Images, Publications Folder Bus Operations Folder Careers Folder Education Folder Energy and Environment Energy Systems and Technologies, Environmental...

  13. Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics

    SciTech Connect (OSTI)

    Aad, G.; Abat, E.; Abbott, B.; Abdallah, J.; Abdelalim, A.A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Acharya, Bobby Samir; Adams, D.L.; Addy, T.N.; Adorisio, C.; Adragna, P.; Adye, T.; Aguilar-Saavedra, J.A.; Aharrouche, M.; Ahlen, S.P.; Ahles, F.; Ahmad, A.; /SUNY, Albany /Alberta U. /Ankara U. /Annecy, LAPP /Argonne /Arizona U. /Texas U., Arlington /Athens U. /Natl. Tech. U., Athens /Baku, Inst. Phys. /Barcelona, IFAE /Belgrade U. /VINCA Inst. Nucl. Sci., Belgrade /Bergen U. /LBL, Berkeley /Humboldt U., Berlin /Bern U., LHEP /Birmingham U. /Bogazici U. /INFN, Bologna /Bologna U.

    2011-11-28

    The Large Hadron Collider (LHC) at CERN promises a major step forward in the understanding of the fundamental nature of matter. The ATLAS experiment is a general-purpose detector for the LHC, whose design was guided by the need to accommodate the wide spectrum of possible physics signatures. The major remit of the ATLAS experiment is the exploration of the TeV mass scale where groundbreaking discoveries are expected. In the focus are the investigation of the electroweak symmetry breaking and linked to this the search for the Higgs boson as well as the search for Physics beyond the Standard Model. In this report a detailed examination of the expected performance of the ATLAS detector is provided, with a major aim being to investigate the experimental sensitivity to a wide range of measurements and potential observations of new physical processes. An earlier summary of the expected capabilities of ATLAS was compiled in 1999 [1]. A survey of physics capabilities of the CMS detector was published in [2]. The design of the ATLAS detector has now been finalised, and its construction and installation have been completed [3]. An extensive test-beam programme was undertaken. Furthermore, the simulation and reconstruction software code and frameworks have been completely rewritten. Revisions incorporated reflect improved detector modelling as well as major technical changes to the software technology. Greatly improved understanding of calibration and alignment techniques, and their practical impact on performance, is now in place. The studies reported here are based on full simulations of the ATLAS detector response. A variety of event generators were employed. The simulation and reconstruction of these large event samples thus provided an important operational test of the new ATLAS software system. In addition, the processing was distributed world-wide over the ATLAS Grid facilities and hence provided an important test of the ATLAS computing system - this is the origin of the expression 'CSC studies' ('computing system commissioning'), which is occasionally referred to in these volumes. The work reported does generally assume that the detector is fully operational, and in this sense represents an idealised detector: establishing the best performance of the ATLAS detector with LHC proton-proton collisions is a challenging task for the future. The results summarised here therefore represent the best estimate of ATLAS capabilities before real operational experience of the full detector with beam. Unless otherwise stated, simulations also do not include the effect of additional interactions in the same or other bunch-crossings, and the effect of neutron background is neglected. Thus simulations correspond to the low-luminosity performance of the ATLAS detector. This report is broadly divided into two parts: firstly the performance for identification of physics objects is examined in detail, followed by a detailed assessment of the performance of the trigger system. This part is subdivided into chapters surveying the capabilities for charged particle tracking, each of electron/photon, muon and tau identification, jet and missing transverse energy reconstruction, b-tagging algorithms and performance, and finally the trigger system performance. In each chapter of the report, there is a further subdivision into shorter notes describing different aspects studied. The second major subdivision of the report addresses physics measurement capabilities, and new physics search sensitivities. Individual chapters in this part discuss ATLAS physics capabilities in Standard Model QCD and electroweak processes, in the top quark sector, in b-physics, in searches for Higgs bosons, supersymmetry searches, and finally searches for other new particles predicted in more exotic models.

  14. CLUSTER FORMATION TRIGGERED BY FILAMENT COLLISIONS IN SERPENS SOUTH

    SciTech Connect (OSTI)

    Nakamura, Fumitaka; Kawabe, Ryohei; Shinnaga, Hiroko; Sugitani, Koji; Tanaka, Tomohiro; Kimura, Kimihiko; Tokuda, Kazuki; Kozu, Minato; Okada, Nozomi; Hasegawa, Yutaka; Ogawa, Hideo; Nishitani, Hiroyuki; Mizuno, Izumi; Dobashi, Kazuhito; Shimoikura, Tomomi; Shimajiri, Yoshito; Kameno, Seiji; Momose, Munetake; Nakajima, Taku; and others

    2014-08-20

    The Serpens South infrared dark cloud consists of several filamentary ridges, some of which fragment into dense clumps. On the basis of CCS (J{sub N} = 4{sub 3}-3{sub 2}), HC{sub 3}N (J = 5-4), N{sub 2}H{sup +} (J = 1-0), and SiO (J = 2-1, v = 0) observations, we investigated the kinematics and chemical evolution of these filamentary ridges. We find that CCS is extremely abundant along the main filament in the protocluster clump. We emphasize that Serpens South is the first cluster-forming region where extremely strong CCS emission is detected. The CCS-to-N{sub 2}H{sup +} abundance ratio is estimated to be about 0.5 toward the protocluster clump, whereas it is about 3 in the other parts of the main filament. We identify six dense ridges with different V {sub LSR}. These ridges appear to converge toward the protocluster clump, suggesting that the collisions of these ridges may have triggered cluster formation. The collisions presumably happened within a few × 10{sup 5} yr because CCS is abundant only for a short time. The short lifetime agrees with the fact that the number fraction of Class I objects, whose typical lifetime is 0.4 × 10{sup 5} yr, is extremely high, about 70% in the protocluster clump. In the northern part, two ridges appear to have partially collided, forming a V-shape clump. In addition, we detected strong bipolar SiO emission that is due to the molecular outflow blowing out of the protostellar clump, as well as extended weak SiO emission that may originate from the filament collisions.

  15. Phase-I Trigger Readout Electronics Upgrade of the ATLAS Liquid-Argon Calorimeters

    E-Print Network [OSTI]

    Mori, Tatsuya; The ATLAS collaboration

    2015-01-01

    The Large Hadron Collider (LHC) is foreseen to be upgraded during the shut-down period of 2018-2019 to deliver about 3 times the instantaneous design luminosity. Since the ATLAS trigger system, at that time, will not support such an increase of the trigger rate an improvement of the trigger system is required. The ATLAS LAr Calorimeter readout will therefore be modified and digital trigger signals with a higher spatial granularity will be provided to the trigger. The new trigger signals will be arranged in 34000 Super Cells which achieves a 5-10 better granularity than the trigger towers currently used and allows an improved background rejection. The Super Cell readout is composed of custom developed 12-bit combined SAR ADCs in 130 nm CMOS technology which will be installed on-detector in a radiation environment and digitizes the detector pulses at 40 MHz. The data will be transmitted to the back end using a custom serializer and optical converter applying 5.44 Gb/s optical links. These components are install...

  16. A versatile digital camera trigger for telescopes in the Cherenkov Telescope Array

    E-Print Network [OSTI]

    Schwanke, U; Sulanke, K -H; Vorobiov, S; Wischnewski, R

    2015-01-01

    This paper describes the concept of an FPGA-based digital camera trigger for imaging atmospheric Cherenkov telescopes, developed for the future Cherenkov Telescope Array (CTA). The proposed camera trigger is designed to select images initiated by the Cherenkov emission of extended air showers from very-high energy (VHE, E>20 GeV) photons and charged particles while suppressing signatures from background light. The trigger comprises three stages. A first stage employs programmable discriminators to digitize the signals arriving from the camera channels (pixels). At the second stage, a grid of low-cost FPGAs is used to process the digitized signals for camera regions with 37 pixels. At the third stage, trigger conditions found independently in any of the overlapping 37-pixel regions are combined into a global camera trigger by few central FPGAs. Trigger prototype boards based on Xilinx FPGAs have been designed, built and tested and were shown to function properly. Using these components a full camera trigger wi...

  17. Simulation studies of the HADES first level trigger PART I: Performance in heavy-ion induced reaction

    E-Print Network [OSTI]

    R. Schicker; H. Tsertos

    1996-10-03

    The first level trigger of the HADES spectrometer is studied for the heavy-ion collision systems Au+Au and Ne+Ne. The trigger efficiency for central events is given in dependence of the imposed charged particle multiplicity condition. The timing properties of the trigger signal are described. The losses due to deadtime are specified. Finally, the first level trigger rate is reported.

  18. Performance of the ATLAS muon trigger in pp collisions at ?s = 8 TeV

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

    Aad, G.

    2015-03-13

    The performance of the ATLAS muon trigger system is evaluated with proton–proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. It is primarily evaluated using events containing a pair of muons from the decay of Z bosons. The efficiency of the single-muon trigger is measured for muons with transverse momentum 25 T more »top quarks. The muon trigger shows highly uniform and stable performance. Thus, the performance is compared to the prediction of a detailed simulation.« less

  19. Letter report: Evaluation of dryer/calciner technologies for testing

    SciTech Connect (OSTI)

    Sevigny, G.

    1996-02-01

    This letter report describes some past experiences on the drying and calcination of radioactive materials or corresponding simulants; and the information needed from testing. The report also includes an assessment of informational needs including possible impacts to a full-scale plant. This includes reliability, maintenance, and overall size versus throughput. Much of the material was previously compiled and reported by Mike Elliott of PNL {open_quotes}Melter Performance Assessment{close_quotes} and Larry Eisenstatt of SEG on contract to WHC in a letter to Rod Powell. Also, an annotated bibliography was prepared by Reagan Seymour of WHC. Descriptions of the drying and calciner technologies, development status, advantages and disadvantages of using a WFE or calciner, and recommendations for future testing are discussed in this report.

  20. Physics Letters A 374 (2010) 34723475 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    2010-01-01

    of such interactions may be irrele- vant; hence this Letter. The purpose of the present work is to generalize the K

  1. Microsoft Word - AL 2010-07 Acquistion Letters Remaining in Effect...

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

    * * * * * * * * ACQUISITION LETTERS REMAINING IN EFFECT NUMBER DATE SUBJECT 93-4 04071993 Displaced Workers Benefits Program 94-19 12091994 Basic Labor Policies Fringe...

  2. Letter to the Editor Dose rate does matter in endovascular brachytherapy

    E-Print Network [OSTI]

    Brenner, David Jonathan

    Letter to the Editor Dose rate does matter in endovascular brachytherapy Dear Editor compared with typical endovascular brachytherapy irradiation times, both for 90 Sr/90 Y sources

  3. SEAB Letter on Low-Level Radiation Research | Department of Energy

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

    Secretary of Energy Advisory Board (SEAB) transmitted a letter to the Department regarding its perspective on how DOE should pursue research on low-level radiation. SEAB recommends...

  4. Analysis of the Evaluative Components on the Standard Letter of Recommendation (SLOR) in Emergency Medicine

    E-Print Network [OSTI]

    Grall, Kristi; Hiller, Katherine; Stoneking, Lisa

    2014-01-01

    Letter of Recommendation in Emergency Medicine? J Emerg Med.Western Journal of Emergency Medicineapplicants to emergency medicine residency programs. J Emerg

  5. Resource Letter: Dark Energy and the Accelerating Universe

    E-Print Network [OSTI]

    Eric V. Linder

    2007-05-28

    This Resource Letter provides a guide to the literature on dark energy and the accelerating universe. It is intended to be of use to researchers, teachers, and students at several levels. Journal articles, books, and websites are cited for the following topics: Einstein's cosmological constant, quintessence or dynamical scalar fields, modified cosmic gravity, relations to high energy physics, cosmological probes and observations, terrestrial probes, calculational tools and parameter estimation, teaching strategies and educational resources, and the fate of the universe.

  6. 19 May 2000 Z .Chemical Physics Letters 322 2000 175180

    E-Print Network [OSTI]

    Simons, Jack

    19 May 2000 Z .Chemical Physics Letters 322 2000 175­180 www.elsevier.nlrlocatercplett A bi Laboratory, Richland, WA 99352 USA Received 28 January 2000 Abstract The possibility of binding one and two of the vertical electronic stability of LiCN2 2 2 Z . .2y PPP HCCH PPP NCLi is 0.84 eV. q 2000 Elsevier Science B

  7. 16 June 2000 Z .Chemical Physics Letters 323 2000 229233

    E-Print Network [OSTI]

    Anderson, James B.

    16 June 2000 Z .Chemical Physics Letters 323 2000 229­233 www.elsevier.nlrlocatercplett Energetics 16802, USA Received 20 March 2000; in final form 9 May 2000 Abstract The energetics of the ring, bowl. The energies of the ring and cage, relative to the bowl, are 1.1"0.5 and 2.1"0.5 eV, respectively. q 2000

  8. ACQUISITION LETTER DEAR Part 933 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReportOffice | DepartmentVery1,ACQUISITION LETTER DEAR Part 933

  9. Secretary Chu Letter to Senator Lugar | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool FitsProjectData DashboardSolarEfficiency Improvements | Department ofofLetter to

  10. Secretary Moniz's Open Invitation Letter to AEM | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool FitsProjectDataSecretary Moniz's Open Invitation Letter to AEM Secretary Moniz's

  11. Investigation Letter Report: I11IG002 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S. Department of EnergyPresentationOverviewLetter Report:

  12. Letter to SEP Recipients on Changes to Reporting Requirements | Department

    Energy Savers [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 DeliciousMathematicsEnergyInterested Parties - WAPA PublicLED ADOPTION REPORTLand2Plains &Letter fromof

  13. Letter from the Wind Program Director | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuelsof EnergyApril 2014 | InternationalLand and AssetAboutLegacyLessonsLetter

  14. Nitric OxideTriggered Remodeling of Chloroplast Bioenergetics and Thylakoid Proteins upon Nitrogen

    E-Print Network [OSTI]

    Nitric Oxide­Triggered Remodeling of Chloroplast Bioenergetics and Thylakoid Proteins upon Nitrogen droplets, but the accompanying changes in bioenergetics have been little studied so far. Here, we report

  15. The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis

    E-Print Network [OSTI]

    Kirschvink, Joseph L.

    cyanobacteria finally surmounted some geochemical, environmental, or ecological barrier and successfully- house and thereby directly and rapidly triggered a planetary-scale glaciation, the 2.3­2.2 Ga

  16. Delayed triggering of microearthquakes by multiple surface waves circling the Earth

    E-Print Network [OSTI]

    Frankel, Kurt L.

    con- duct a systematic search of remotely triggered microearth- quakes near the Coso Geothermal Field of the auxiliary material shows the record sections for vertical displacement seismograms generated by the Mw 8

  17. Design of a Hardware Track Finder (Fast Tracker) for the ATLAS Trigger

    E-Print Network [OSTI]

    Cavaliere, Viviana; The ATLAS collaboration

    2015-01-01

    The use of tracking information at the trigger level in the LHC Run II period is crucial for the trigger an data acquisition (TDAQ) system and will be even more so as contemporary collisions that occur at every bunch crossing will increase in Run III. The Fast TracKer (FTK) is part of the ATLAS trigger upgrade project; it is a hardware processor that will provide every Level-1 accepted event (100 kHz) and within 100$\\mu$s, full tracking information for tracks with momentum as low as 1 GeV. Providing fast, extensive access to tracking information, with resolution comparable to the offline reconstruction, FTK will help in precise detection of the primary and secondary vertices to ensure robust selections and improve the trigger performance.

  18. Flow through porous media : from mixing of fluids to triggering of earthquakes

    E-Print Network [OSTI]

    Jha, Birendra, Ph. D. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering

    2014-01-01

    Enhanced oil recovery by displacing oil with solvents such as carbon dioxide requires development of miscibility between the two fluids to maximize the displacement efficiency. Prevention of inadvertent triggering of ...

  19. Results of the Triggered TROI Steam Explosion Experiments with a Narrow Interaction Vessel

    SciTech Connect (OSTI)

    Kim, J.H.; Park, I.K.; Min, B.T.; Hong, S.W.; Hong, S.H.; Song, J.H.; Kim, H.D.

    2006-07-01

    The effect of the interaction vessel geometry has been studied on the energetics of a steam explosion in the TROI experiment. The interaction vessel was 30 cm in diameter (1-D geometry). Two types of corium composition were used as a melt. One was spontaneously non-explosive 80 : 20 corium (UO{sub 2} : ZrO{sub 2}) and the other was spontaneously explosive 70 : 30 eutectic corium. A test with 80 : 20 corium was carried out without an external triggering. Another test with 80 : 20 corium was also carried out with an external trigger. In addition, two tests with 70 : 30 corium were carried out with an external trigger. The external trigger was applied just before the contact between the melt and the bottom of the interaction vessel. This time was thought to be the triggering time of a spontaneous steam explosion. The external trigger was a chemical explosive of PETN 1.0 g. However, none of these tests led to steam explosions even with an external triggering. Since eutectic corium led to spontaneous or triggered steam explosions in a previous test using a 60 cm wide interaction vessel (3-D geometry), it is quite probable that a geometry effect of the interaction vessel could exist. The reason for no steam explosions in the narrow (1-D) interaction vessel is believed to be a relatively high void fraction in the vessel when compared with the 3-D vessel. Due to the high void fraction, a steam explosion could not propagate to the surroundings of the melt where the water was depleted. (authors)

  20. The Upgrade and Performance of the ATLAS Electron and Photon Triggers towards Run II

    E-Print Network [OSTI]

    Reichert, Joseph; The ATLAS collaboration

    2015-01-01

    Electron and photon triggers are essential for signal selection in a wide variety of ATLAS physics analyses to study Standard Model processes and to search for new phenomena. Final states including leptons and photons had, for example, an important role in the discovery and measurement of the Higgs particle. Dedicated triggers are also used for the collection of J/? ?e+ e? , W? e? and QCD background samples for calibration, efficiency and fake rate measurements. The ATLAS trigger system is divided in a hardware-based (Level 1) and a software based high level trigger, both of which were upgraded during the long shutdown of the LHC in preparation for data taking in 2015. The increasing luminosity and more challenging pile-up conditions as well as the planned higher centre-of-mass energy demanded the optimisation of the trigger selections at each level to control the rates and keep efficiencies high. The evolution of the ATLAS electron and photon triggers and their performance will be presented, includin...

  1. The Upgrade of the ATLAS Electron and Photon Triggers towards LHC Run 2 and their Performance

    E-Print Network [OSTI]

    Kahn, Sebastien Jonathan; The ATLAS collaboration

    2015-01-01

    Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for signal selection in a wide variety of ATLAS physics analyses to study Standard Model processes and to search for new phenomena. Final states including leptons and photons had, for example, an important role in the discovery and measurement of the Higgs particle. Dedicated triggers are also used to collect data for calibration, efficiency and fake rate measurements. The ATLAS trigger system is divided in a hardware-based (Level 1) and a software based high level trigger, both of which were upgraded during the long shutdown of the LHC in preparation for data taking in 2015. The increasing luminosity and more challenging pile-up conditions as well as the planned higher center-of-mass energy demanded the optimisation of the trigger selections at each level to control the rates and keep efficiencies high. The evolution of the ATLAS electron and photon triggers and their performance will be presented, including ini...

  2. Kinetic simulation studies of laser-triggering in the Z gas switch

    SciTech Connect (OSTI)

    Welch, D. R.; Rose, D. V.; Thoma, C.; Clark, R. E.; Miller, C.; Madrid, E. A.; Zimmerman, W. R. [Voss Scientific, LLC, Albuquerque, New Mexico 87108 (United States)] [Voss Scientific, LLC, Albuquerque, New Mexico 87108 (United States); Rambo, P. K.; Schwarz, J.; Savage, M.; Atherton, B. W. [Sandia National Laboratories, Albuquerque, New Mexico 87185-1196 (United States)] [Sandia National Laboratories, Albuquerque, New Mexico 87185-1196 (United States)

    2013-08-15

    Advanced z-pinch accelerators require precise timing of multiple mega-ampere drivers to deliver terawatt power. The triggering of these drivers is now largely initiated by laser ionization of gas switches. In this paper, we discuss detailed fully kinetic simulation of the Z laser-triggered gas switch involving detailed finite-difference time-domain particle-in-cell Monte Carlo modeling of the trigger section of the switch. Other components of the accelerator from the Marx bank through the pulse-forming line are described as circuit elements. The simulations presented here build on a recently developed model of electro-negative gas breakdown and streamer propagation that included photons produced from de-excited neutrals. New effects include multi-photon ionization of the gas in a prescribed laser field. The simulations show the sensitivity of triggering to laser parameters including focal plane within the anode-cathode gap of the trigger section of the switch, intensity at focus, and laser pulse length. Detailed electromagnetic simulations of the trigger section with circuit modeling of the upstream and downstream components are largely in agreement with Z data and demonstrate a new capability.

  3. Optically triggered high voltage switch network and method for switching a high voltage

    DOE Patents [OSTI]

    El-Sharkawi, Mohamed A. (Renton, WA); Andexler, George (Everett, WA); Silberkleit, Lee I. (Mountlake Terrace, WA)

    1993-01-19

    An optically triggered solid state switch and method for switching a high voltage electrical current. A plurality of solid state switches (350) are connected in series for controlling electrical current flow between a compensation capacitor (112) and ground in a reactive power compensator (50, 50') that monitors the voltage and current flowing through each of three distribution lines (52a, 52b and 52c), which are supplying three-phase power to one or more inductive loads. An optical transmitter (100) controlled by the reactive power compensation system produces light pulses that are conveyed over optical fibers (102) to a switch driver (110') that includes a plurality of series connected optical triger circuits (288). Each of the optical trigger circuits controls a pair of the solid state switches and includes a plurality of series connected resistors (294, 326, 330, and 334) that equalize or balance the potential across the plurality of trigger circuits. The trigger circuits are connected to one of the distribution lines through a trigger capacitor (340). In each switch driver, the light signals activate a phototransistor (300) so that an electrical current flows from one of the energy reservoir capacitors through a pulse transformer (306) in the trigger circuit, producing gate signals that turn on the pair of serially connected solid state switches (350).

  4. Letter of Agreement between SFU Indigenous Student Centre and SFU Indigenous student regarding SFU Bookstore purchases by 3rd

    E-Print Network [OSTI]

    Bookstore purchases by 3rd party sponsorship This letter serves as a formal agreement between the following

  5. RL-PER1: Resource Letter on Physics Education Research Lillian C. McDermott

    E-Print Network [OSTI]

    Maryland at College Park, University of

    RL- PER1: Resource Letter on Physics Education Research Lillian C. McDermott Department of Physics, College Park, MD 20742 The purpose of this Resource Letter is to provide an overview of research of physicists engaged in physics education. The first is the growing number whose field of scholarly inquiry

  6. Information Processing Letters 90 (2004) 714 www.elsevier.com/locate/ipl

    E-Print Network [OSTI]

    Mitzenmacher, Michael

    2004-01-01

    Information Processing Letters 90 (2004) 7­14 www.elsevier.com/locate/ipl Exhaustive approaches by Elsevier B.V. doi:10.1016/j.ipl.2004.01.006 #12;8 N. Lesh et al. / Information Processing Letters 90 (2004 reported results of heuristics on the Hopper benchmarks (that we solve exactly below) are several percent

  7. Information Processing Letters 102 (2007) 118123 www.elsevier.com/locate/ipl

    E-Print Network [OSTI]

    Yi, Kwangkeun "Kwang"

    2007-01-01

    Information Processing Letters 102 (2007) 118­123 www.elsevier.com/locate/ipl An empirical study program point, and reports possible bugs by examining the approximate states. From such static bug:10.1016/j.ipl.2006.11.004 #12;K. Yi et al. / Information Processing Letters 102 (2007) 118­123 119

  8. Physics Letters B 685 (2010) 141145 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Wurtele, Jonathan

    2010-01-01

    Physics Letters B 685 (2010) 141­145 Contents lists available at ScienceDirect Physics Letters B e , R.I. Thompson i , D.P. van der Werf b , J.S. Wurtele c , Y. Yamazaki m a Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark b Department of Physics, Swansea University, Swansea SA

  9. IEEE SIGNAL PROCESSING LETTERS, VOL. 5, NO. 6, JUNE 1998 129 Efficient Block Implementation of

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    IEEE SIGNAL PROCESSING LETTERS, VOL. 5, NO. 6, JUNE 1998 129 Efficient Block Implementation of the Decision Feedback Equalizer Kostas Berberidis, Member, IEEE, Thanasis A. Rontogiannis, and Sergios Theodoridis, Member, IEEE Abstract--In this letter, a new block adaptive decision feedback equalizer

  10. ISAB 2001-3 Hatchery Surplus Letter -Page 1 Independent Scientific Advisory Board

    E-Print Network [OSTI]

    ISAB 2001-3 Hatchery Surplus Letter - Page 1 Independent Scientific Advisory Board Portland, Oregon 97204 ISAB@nwppc.org April 16, 2001 Dr. Usha Varanasi Science Director Northwest Fisheries Surplus Review Dear Dr. Varanasi: This letter is the ISAB's response to your January 29, 2001 request

  11. no fee required revised: 09/30/2014 Request Form for Letter of Good Standing,

    E-Print Network [OSTI]

    Myers, Lawrence C.

    no fee required revised: 09/30/2014 Request Form for Letter of Good Standing, Verification the following information: Letter of Good Standing includes enrollment information (medicine major, enrollment date, class year, and expected month and year of graduation) and: "student is in good standing" line

  12. Letter from the Wind Program Director | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool Fits the BillDepartment ofEnergyJoe25, 2015Legalthe District ofDirector Letter

  13. Letter to Russia (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle) | SciTech Connect Learning How toLetter to Russia

  14. Letter to Russia (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle) | SciTech Connect Learning How toLetter to

  15. Chu-Lugar-Letter.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a lCaribElectricSouthApplying2-2002 JulyBothChu-Lugar-Letter.pdf More

  16. Letter to Congress RE: Office of Civilian Radioactive Waste Management's

    Energy Savers [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 DeliciousMathematicsEnergyInterested Parties - WAPA PublicLED ADOPTION REPORTLand2Plains &Letter from theAnnual

  17. Acquisition Letter No. AL 2013-01 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12 Beta-3AUDIT REPORT:Federal EmployeeChapter 3.21 Acquisition Letter

  18. Acquisition Letters No. AL 2015-08 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12 Beta-3AUDIT REPORT:Federal EmployeeChapter 3.211EnergyLetters

  19. Acquisition letter No. AL 2015-05 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12 Beta-3AUDIT REPORT:Federal EmployeeChapterAcquisition News56letter

  20. The Upgrade of the ATLAS Electron and Photon Triggers towards LHC Run 2 and their Performance

    E-Print Network [OSTI]

    Pasztor, Gabriella; The ATLAS collaboration

    2015-01-01

    Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for signal selection in a wide variety of ATLAS physics analyses to study Standard Model processes and to search for new phenomena. Final states including leptons and photons had, for example, an important role in the discovery and measurement of the Higgs particle. Dedicated triggers are also used to collect data for calibration, efficiency and fake rate measurements. The ATLAS trigger system is divided in a hardware-based (Level 1) and a software based high level trigger (HLT), both of which were upgraded during the long shutdown of the LHC in preparation for data taking in 2015. The increasing luminosity and more challenging pile-up conditions as well as the planned higher center-of-mass energy demanded the optimisation of the trigger selections at each level, to control the rates and keep efficiencies high. To improve the performance multivariate analysis techniques are introduced at the HLT. The evolution of...

  1. The Upgrade and Performance of the ATLAS Tau Trigger towards Run 2

    E-Print Network [OSTI]

    Karamaoun, Andrew; The ATLAS collaboration

    2015-01-01

    Tau triggers are used in a variety of highly anticipated ATLAS physics analyses, including the measurement of the Higgs boson coupling to fermions and searches for Higgs boson partners or heavy resonances decaying into pairs of tau leptons. As proton-proton collisions at the LHC reach instantaneous luminosities of over 10 34 cm ?2 s ?1 , the strategies for triggering have become more sophisticated than in Run 1. In these conditions single tau lepton triggers suffer from severe rate limitations, despite the advancements in algorithms used in the tau identification. Further fast algorithms and the design of topological selections are the main developments to allow a large program of physics analysis. In Run 2, topological criteria can be applied already at the first trigger level, due to the addition of the L1 topological processor. This makes it possible to use detailed information from sub-detectors in order to apply real-time event topology cuts. The evolution of the ATLAS tau trigger and its performance...

  2. The Upgrade and Performance of the ATLAS Tau Triggers towards Run 2

    E-Print Network [OSTI]

    Karamaoun, Andrew; The ATLAS collaboration

    2015-01-01

    The Upgrade and Performance of the ATLAS Tau Triggers towards Run 2 Tau triggers are used in a variety of highly anticipated ATLAS physics analyses, including the measurement of the Higgs boson coupling to fermions and searches for Higgs boson partners or heavy resonances decaying into pairs of tau leptons. As proton-proton collisions at the LHC reach instantaneous luminosities of over 10^34cm^ -2s-1, the strategies for triggering have become more sophisticated than in Run 1. In these conditions single tau lepton triggers suffer from severe rate limitations, despite the advancements in algorithms used in the tau identification. Further fast algorithms and the design of topological selections are the main developments to allow a large program of physics analysis. In Run 2 topological criteria can be applied already at the first trigger level, due to the addition of the L1 topological processor. This makes it possible to use detailed information from sub-detectors in order to apply real-time event topology cuts...

  3. CDF trigger final balance: Offline resolution at low level selections to fight against Tevatron increasing luminosity

    SciTech Connect (OSTI)

    Amerio, S.; /Padua U. /INFN, Padua

    2010-01-01

    The CDF detector at Tevatron collider is at present the most long-lasting high energy physics experiment. Since its first data taking in 1992 it has produced many results of primary importance, such as the discovery of top quark and, more recently, the observations of Bs oscillations and single-top production. None of them would have been possible without a fast and efficient trigger system. Based on a three level architecture, the CDF trigger takes decisions on simple calorimetric and tracking objects and assures both high efficiency on signal events and low dead time. It reduces the data flow rate from 2.53 MHz, the collision rate, to 150 Hz, the current limit on tape writing and is flexible enough to be easily adapted to the continuously growing instantaneous luminosity. In the last years the Tevatron instantaneous luminosity has rapidly increased and is now reaching 4 x 10{sup 32} cm{sup -2} s{sup -1}. The CDF trigger system has been widely upgraded to cope with increasing trigger rates. The upgrade result is online reconstruction of missing transverse energy, jets and tracks with a quality comparable to the offline one. Jet energy and direction can be precisely determined and tracks can be subjected to 3-D reconstruction with good resolution. These upgrades reduce high trigger rates to acceptable levels and have provided invaluable tools to increase the purity of the collected samples. They also represent a helpful experience for LHC experiments where background rates will be much more demanding.

  4. Distinguishing Cause from Correlation in Tokamak Experiments to Trigger Edge Localised Plasma Instabilities

    E-Print Network [OSTI]

    Webster, A J

    2014-01-01

    The generic question is considered: How can we determine the probability of an otherwise quasirandom event, having been triggered by an external influence? A specific problem is the quantification of the success of techniques to trigger, and hence control, edge-localised plasma instabilities (ELMs) in magnetically confined fusion (MCF) experiments. The development of such techniques is essential to ensure tolerable heat loads on components in large MCF fusion devices, and is necessary for their development into economically successful power plants. Bayesian probability theory is used to rigorously formulate the problem and to provide a formal solution. Accurate but pragmatic methods are developed to estimate triggering probabilities, and are illustrated with experimental data. These allow results from experiments to be quantitatively assessed, and rigorously quantified conclusions to be formed.

  5. Jet-Triggered Photons from Back-Scattering Kinematics for Quark Gluon Plasma Tomography

    E-Print Network [OSTI]

    Somnath De; Rainer J. Fries; Dinesh K. Srivastava

    2014-10-11

    High energy photons created from back-scattering of jets in quark gluon plasma are a valuable probe of the temperature of the plasma, and of the energy loss mechanism of quarks in the plasma. An unambiguous identification of these photons through single inclusive photon measurements and photon azimuthal anisotropies has so far been elusive. We estimate the spectra of back-scattering photons in coincidence with trigger jets for typical kinematic situations at the Large Hadron Collider and the BNL Relativistic Heavy Ion Collider. We find that the separation of back-scattering photons from other photon sources using trigger jets depends crucially on our ability to reliably estimate the initial trigger jet energy. We estimate that jet reconstruction techniques in heavy ion experiments need to be able to get to jet $R_{AA}\\gtrsim 0.7$ in central collisions for viable back-scattering signals.

  6. Trigger probe for determining the orientation of the power distribution of an electron beam

    DOE Patents [OSTI]

    Elmer, John W. (Danville, CA); Palmer, Todd A. (Livermore, CA); Teruya, Alan T. (Livermore, CA)

    2007-07-17

    The present invention relates to a probe for determining the orientation of electron beams being profiled. To accurately time the location of an electron beam, the probe is designed to accept electrons from only a narrowly defined area. The signal produced from the probe is then used as a timing or triggering fiducial for an operably coupled data acquisition system. Such an arrangement eliminates changes in slit geometry, an additional signal feedthrough in the wall of a welding chamber and a second timing or triggering channel on a data acquisition system. As a result, the present invention improves the accuracy of the resulting data by minimizing the adverse effects of current slit triggering methods so as to accurately reconstruct electron or ion beams.

  7. The Performance and Development of the Inner Detector Trigger Algorithms at ATLAS for LHC Run 2

    E-Print Network [OSTI]

    Sowden, Benjamin Charles; The ATLAS collaboration

    2015-01-01

    A description of the design and performance of the newly reimplemented tracking algorithms for the ATLAS trigger for LHC Run 2, to commence in spring 2015, is provided. The ATLAS High Level Trigger (HLT) has been restructured to run as a more flexible single stage process, rather than the two separate Level 2 and Event Filter stages used during Run 1. To make optimal use of this new scenario, a new tracking strategy has been implemented for Run 2 for the HLT. This new strategy will use a Fast Track Finder (FTF) algorithm to directly seed the subsequent Precision Tracking, and will result in improved track parameter resolution and significantly faster execution times than achieved during Run 1 but with no significant reduction in efficiency. The performance and timing of the algorithms for numerous physics signatures in the trigger are presented. The profiling infrastructure, constructed to provide prompt feedback from the optimisation, is described, including the methods used to monitor the relative performan...

  8. The trigger and data acquisition for the NEMO-Phase 2 tower

    SciTech Connect (OSTI)

    Pellegrino, C.; Biagi, S.; Fusco, L. A.; Margiotta, A.; Spurio, M.; Chiarusi, T.; and others

    2014-11-18

    In the framework of the Phase 2 of the NEMO neutrino telescope project, a tower with 32 optical modules is being operated since march 2013. A new scalable Trigger and Data Acquisition System (TriDAS) has been developed and extensively tested with the data from this tower. Adopting the all-data-to-shore concept, the NEMO TriDAS is optimized to deal with a continuous data-stream from off-shore to on-shore with a large bandwidth. The TriDAS consists of four computing layers: (i) data aggregation of isochronal hits from all optical modules; (ii) data filtering by means of concurrent trigger algorithms; (iii) composition of the filtered events into post-trigger files; (iv) persistent data storage. The TriDAS implementation is reported together with a review of dedicated on-line monitoring tools.

  9. The updated ATLAS Jet Trigger for the LHC Run~II

    E-Print Network [OSTI]

    Sebastien Prince; for the ATLAS collaboration

    2015-11-03

    After the current shutdown, the LHC is about to resume operation for a new data-taking period, when it will operate with increased luminosity, event rate and center of mass energy. The new conditions will impose more demanding constraints on the ATLAS online trigger reconstruction and selection system. To cope with such increased constraints, the ATLAS High-Level Trigger, placed after a first hardware-based Level~1 trigger, has been redesigned by merging two previously separated software-based processing levels. In the new joint processing level, the algorithms run in the same computing nodes, thus sharing resources, minimizing the data transfer from the detector buffers and increasing the algorithm flexibility. The jet trigger software selects events containing high transverse momentum hadronic jets. It needs optimal jet energy resolution to help rejecting an overwhelming background while retaining good efficiency for interesting jets. In particular, this requires the CPU-intensive reconstruction of tridimensional energy deposits in the ATLAS calorimeter to be used as the basic input to the jet finding algorithms. To allow this costly reconstruction step, a partial detector readout scheme was developed, that effectively suppresses the low activity regions of the calorimeter and significantly reduces the needed resources. In this paper we describe the overall jet trigger software and its physics performance. We then focus on detailed studies of the algorithm timing and the performance impact of the full and partial calorimeter readout schemes. We conclude with an outlook of the jet trigger plans for the next LHC data-taking period.

  10. Multi-line triggering and interdigitated electrode structure for photoconductive semiconductor switches

    DOE Patents [OSTI]

    Mar, Alan (Albuquerque, NM); Zutavern, Fred J. (Albuquerque, NM); Loubriel, Guillermo (Albuquerque, NM)

    2007-02-06

    An improved photoconductive semiconductor switch comprises multiple-line optical triggering of multiple, high-current parallel filaments between the switch electrodes. The switch can also have a multi-gap, interdigitated electrode for the generation of additional parallel filaments. Multi-line triggering can increase the switch lifetime at high currents by increasing the number of current filaments and reducing the current density at the contact electrodes in a controlled manner. Furthermore, the improved switch can mitigate the degradation of switching conditions with increased number of firings of the switch.

  11. A Test Stand for the Muon Trigger Development for the CMS Experiment at the LHC 

    E-Print Network [OSTI]

    Lakdawala, Samir

    2013-05-02

    of the collider will increase the rate of collisions and expand the physics reach of CMS, but will also push the detector systems beyond their current capabilities. One critically affected element is the CMS trigger, a system responsible for making a fast...

  12. Microbial Pathogens Trigger Host DNA Double-Strand Breaks Whose Abundance Is Reduced by Plant Defense

    E-Print Network [OSTI]

    of an alternative mediator of pathogen-induced H2AX phosphorylation. In summary, pathogenic microorganisms canMicrobial Pathogens Trigger Host DNA Double-Strand Breaks Whose Abundance Is Reduced by Plant largely unknown. We report that multiple bacterial, fungal and oomycete plant pathogen species induce

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

    E-Print Network [OSTI]

    Shimizu, Shima; The ATLAS collaboration

    2015-01-01

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

  14. The Making of Trigger and the Agile Engineering of Artist-Scientist Collaboration

    E-Print Network [OSTI]

    Marchese, Francis

    functionality is captured and a project plan is put forth. In design, the general architecture is drawn and low in a preplanned, scheduled sequence. The traditional engineering life-cycle model does not formally address of the multimedia art installation project titled "Trigger." By beginning with requirements engineering and risk

  15. Laser-driven plasma-based accelerators: Wakefield excitation, channel guiding, and laser triggered particle injection*

    E-Print Network [OSTI]

    Wurtele, Jonathan

    Laser-driven plasma-based accelerators: Wakefield excitation, channel guiding, and laser triggered; accepted 18 February 1998 Plasma-based accelerators are discussed in which high-power short pulse lasers are the power source, suitably tailored plasma structures provide guiding of the laser beam and support large

  16. Compact 180-kV Marx generator triggered in atmospheric air by femtosecond laser filaments

    SciTech Connect (OSTI)

    Arantchouk, L. Larour, J.; Point, G.; Brelet, Y.; Carbonnel, J.; André, Y.-B.; Mysyrowicz, A.; Houard, A.

    2014-03-10

    We developed a compact Marx generator triggered in atmospheric air by a single femtosecond laser beam undergoing filamentation. Voltage pulses of 180?kV could be generated with a subnanosecond jitter. The same laser beam was also used to initiate simultaneously guided discharges up to 21?cm long at the output of the generator.

  17. Energy Measurement and Strategy for a Trigger of Ultra High Energy Cosmic

    E-Print Network [OSTI]

    Erdmann, Martin

    Energy Measurement and Strategy for a Trigger of Ultra High Energy Cosmic Rays Measured with Radio Ray induced Air Showers 3 2.1 Physics of Ultra High Energy Cosmic Rays . . . . . . . . . . . . . . . 3 2.1.1 Energy Spectrum . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.2 Composition

  18. Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1

    E-Print Network [OSTI]

    Thomas, Jeremy N.

    Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1 and Jeremy N. Thomas2 that solar-terrestrial interaction, as measured by sunspots, solar wind velocity, and geomagnetic activity by the corresponding rank of annual, monthly, and daily averages of the solar-terrestrial variables. We measure

  19. Adapting Task Utility in Externally Triggered Energy Harvesting Wireless Sensing Systems

    E-Print Network [OSTI]

    Simunic, Tajana

    of time. A significant challenge in this type of system is the management and conservation of energyAdapting Task Utility in Externally Triggered Energy Harvesting Wireless Sensing Systems Jamie achievable within a global deadline. We apply our methods to a prototype Structural Health Monitoring system

  20. Severe osmotic compression triggers a slowdown of intracellular signaling, which can be explained

    E-Print Network [OSTI]

    Hersen, Pascal - Laboratoire Matière et Systèmes Complexes, Université Paris 7

    Severe osmotic compression triggers a slowdown of intracellular signaling, which can be explained by severe osmotic stress, slows down the dynamics of several signaling cascades, including the stress-response pathways required for osmotic adaptation. We show that increasing osmotic compression decreases protein

  1. Photo-triggering and secondary electron produced ionization in electric discharge ArF* excimer lasers

    E-Print Network [OSTI]

    Kushner, Mark

    . It is well known that an adequate initial photo-electron density is critical to main- taining a stablePhoto-triggering and secondary electron produced ionization in electric discharge ArF* excimer photo- electron density in the inter-electrode spacing is around 108 cmÀ3 , and its distribution

  2. Event-triggered Network Utility Maximization through Consensus Filtering Meng Xia and Michael Lemmon

    E-Print Network [OSTI]

    Lemmon, Michael

    for the distributed estimation of link utilization in a distributed NUM algorithm. In particular, we establish) problems maximize the aggregate utility by transmitting at a specified data rate subject to linearEvent-triggered Network Utility Maximization through Consensus Filtering Meng Xia and Michael

  3. Triggering and dynamic evolution of the LUSI mud volcano, Indonesia A. Mazzini a,, H. Svensen a

    E-Print Network [OSTI]

    Svensen, Henrik

    Triggering and dynamic evolution of the LUSI mud volcano, Indonesia A. Mazzini a,, H. Svensen a , G Claude-Bernard UMR 5125 CNRS, 2, rue Dubois, 69622 Villeurbanne cedex, France d Volcanic Basin Petroleum Subroto 42, 12710, Jakarta Indonesia Received 20 March 2007; received in revised form 12 June 2007

  4. The ATLAS Hadronic Tau Trigger Initial Run-2 Strategy and Performance

    E-Print Network [OSTI]

    Pickering, Mark Andrew; The ATLAS collaboration

    2015-01-01

    As proton-proton collisions at the LHC reach instantaneous luminosities of over 10^34cm^ -2s-1, the strategies for triggering have become more important than ever for physics analyses. In these conditions single tau lepton triggers suffer from severe rate limitations, despite the sophisticated algorithms used in the tau identification. The development of further fast algorithms and the design of topological selections are the main challenges to allow a large program of physics analysis. The tau triggers provide many opportunities to study new physics beyond the Standard Model, and to get precise measurements of the properties of the Higgs boson decaying to tau-leptons. One of the major challenges is to sustain high efficiencies in events with multiple interactions. To do this we utilised faster tracking methods, multivariate selection techniques. In Run II topological criteria can now be applied already at the first trigger level, due to the addition of the L1 topological. This makes it possible to use detail...

  5. A movable trigger: Fossil fuel CO2 and the onset of the next David Archer

    E-Print Network [OSTI]

    A movable trigger: Fossil fuel CO2 and the onset of the next glaciation David Archer Department from fossil fuel combustion will remain in the atmosphere for thousands of years, and $7% will remain beyond one hundred thousand years (Archer, 2005). We predict that a carbon release from fossil fuels

  6. A ground level gamma-ray burst observed in association with rocket-triggered lightning

    E-Print Network [OSTI]

    Florida, University of

    A ground level gamma-ray burst observed in association with rocket-triggered lightning J. R. Dwyer 2004; published 13 March 2004. [1] We report the observation of an intense gamma-ray burst observed lightning channel with gamma-ray energies extending up to more than 10 MeV. The burst consisted of 227

  7. External Geophysics, Climate and Environment Investigating plausible mechanisms to trigger a deglaciation

    E-Print Network [OSTI]

    results show that LMDz is much more sensitive to a CO2 increase than FOAM. This article shows that among­Earth scenario, one of the most important is to establish the CO2 threshold required for the deglaciation insolation, 0.29 bar of CO2 would be needed to trigger deglaciation. New results, obtained

  8. Adapting Task Utility in Externally Triggered Energy Harvesting Wireless Sensing Systems

    E-Print Network [OSTI]

    Simunic, Tajana

    Adapting Task Utility in Externally Triggered Energy Harvesting Wireless Sensing Systems Jamie tajana@ucsd.edu Abstract--Energy harvesting sensor nodes eliminate the need for post-deployment physical the utility of their tasks to accommodate the energy availability. For example, on sunny days, a solar

  9. Monsoon surges trigger oceanic eddy formation and propagation in the lee of the Philippine Islands

    E-Print Network [OSTI]

    with eddies that form in the lee of the Cabo Verde and Canary Islands [Chavanne et al., 2002; Sangra et al., 2007]. The Hawaii, Cabo Verde and Canary Islands are located in the trades where winds have typicalMonsoon surges trigger oceanic eddy formation and propagation in the lee of the Philippine Islands

  10. Tips for Reducing Asthma Triggers in Indoor Environments The goal of parents who have children with

    E-Print Network [OSTI]

    , animal dander, feathers, dust, food, and cockroaches. If your child can avoid being exposed to trigger materials weekly or more often if needed. Vacuum and wet mop hard-surface flooring often to reduce dust these #12;products. Consider using less toxic products. Keep foods "in the kitchen" for easier cleaning

  11. Temporary Inactivation in the Primate Motor Thalamus During Visually Triggered and Internally Generated Limb Movements

    E-Print Network [OSTI]

    Miall, Chris

    to make visually triggered (VT) and internally generated (IG) limb movements. Infusions of lignocaine- duced remained relatively normal. Infusions centered within area X never caused hemiplegia. The only remained unchanged. Infusions centered within VLo reduced the number of movements attempted during each

  12. A co-simulation framework for design of time-triggered automotive cyber physical systems

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    A co-simulation framework for design of time-triggered automotive cyber physical systems Zhenkai Automotive control system SystemC a b s t r a c t Designing cyber-physical systems (CPS) is challenging due to the tight interactions between software, network/platform, and physical components. Automotive control sys

  13. How Do API Changes Trigger Stack Overflow Discussions? A Study on the Android SDK

    E-Print Network [OSTI]

    Poshyvanyk, Denys

    How Do API Changes Trigger Stack Overflow Discussions? A Study on the Android SDK Mario LinaresOverflow highlights an increasing interest of software developers in mobile programming. For the Android platform, 213,836 questions were tagged with Android-related labels in StackOverflow between July 2008 and August 2012

  14. POLICY FLASH 2014-17 Revised Acquisition Letter 2013-11- Non...

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

    Robert.Loop@hq.doe.gov. Policy Flash - AL 2013-11 revised non-M&O Contractor Business Systems Clauses Section H.pdf Acquisition Letter 2013-11 revised Business System Clauses Feb...

  15. 22 May 1989Information Processing Letters 31 (1989) 203-208 North-Holland

    E-Print Network [OSTI]

    1989-01-01

    [9]. Discussions of the pr&iple and variants can be found rn [1,14,15]. We present a similar 203 #12;Volume 31, Number 4 INFORMATION PROCESSING LETTERS 22 M;ry1989 never reports a "negative

  16. Information Processing Letters 87 (2003) 5966 www.elsevier.com/locate/ipl

    E-Print Network [OSTI]

    Stallmann, Matt

    2003-01-01

    Information Processing Letters 87 (2003) 59­66 www.elsevier.com/locate/ipl Optimal one-page tree). 1 A more extensive report is in Robert Hochberg's thesis [7]. Goldberg and Klipker [6] gave an O(n3

  17. Information Processing Letters 113 (2013) 764770 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Youssef, Amr M.

    2013-01-01

    Direct Information Processing Letters www.elsevier.com/locate/ipl Second order collision for the 42-step reduced DHA progress has been reported in analysis of SHA-2: collisions and pseudo-collisions for vari- ants of SHA-2

  18. THE SCHMIDT COLLEGE OF ARTS & LETTERS HISTORY MAJOR CHECKLIST (updated: September 2011)

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Century American Social History AMH3310 3 _____ History of American Technology AMH3372 3 _____ The AmericaTHE SCHMIDT COLLEGE OF ARTS & LETTERS HISTORY MAJOR CHECKLIST (updated: September 2011) Student: ________________________ Student Phone#: _________________ Date: __________ Survey Courses (all required; 18cr.) History

  19. LETTER Climate envelope modelling reveals intraspecific relationships among flowering phenology, niche breadth and potential

    E-Print Network [OSTI]

    Purugganan, Michael D.

    LETTER Climate envelope modelling reveals intraspecific relationships among flowering phenology structured can help to understand species' ecological tolerances and range limits. We modelled the climate climatic vari- ables. We found that genotypes with contrasting alleles at individual flowering time loci

  20. God of this age: Satan in the churches and Letters of the Apostle Paul 

    E-Print Network [OSTI]

    Brown, Derek Ryan

    2011-11-24

    This thesis aims to elucidate the nature of the references to Satan in the undisputed Pauline corpus. Although scholarship has frequently devoted attention to the various “powers of evil” in Paul’s letters—including ...

  1. ELSEVIER Earth and Planetary Science Letters 170 (1999) 351364 www.elsevier.com/locate/epsl

    E-Print Network [OSTI]

    Claeys, Philippe

    1999-01-01

    (Fig. 1). Sedimentologic and petrographic evidence suggest L Corresponding author. Tel.=Fax: C1 et al. / Earth and Planetary Science Letters 170 (1999) 351­364 Fig. 1. Stratigraphy of the Albion

  2. IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 17, NO. 6, JUNE 2005 1253 High Sensitivity Evanescent Field Fiber

    E-Print Network [OSTI]

    Dagenais, Mario

    IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 17, NO. 6, JUNE 2005 1253 High Sensitivity Evanescent Field, IEEE, and Mario Dagenais, Senior Member, IEEE Abstract--Increased sensitivity to change in surrounding

  3. ENTERPRISE RISK MANAGEMENT 2009 Annual Report Letter to President Emmert . . . . . . . . . . . . . 2

    E-Print Network [OSTI]

    Kaminsky, Werner

    0 ENTERPRISE RISK MANAGEMENT 2009 Annual Report #12;1 Letter to President Emmert Analysis Employment Liability Seminar . . . . . . . . . . . 13 Human Resources ­ Managing Key Risks: President Mark Emmert From: President's Advisory Committee on Enterprise Risk Management Re: UW Enterprise

  4. Acquisition Letter 2015-02 - Revision of DOE O 350.1 and Special...

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

    of Acquisition Letter (AL) 2015-02 is to communicate the revisions to Chapter VII, Risk Management and Insurance Programs of DOE Order 350.1, Contractor Human Resource...

  5. Policy Flash 2015-05 - Acquisition Letter 2015-02 - Revision...

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

    of Policy Office of Acquisition and Project Management SUBJECT: Acquisition Letter 2015-02 - Revision of Department of Energy (DOE) Order 350.1 and Special H Clause SUMMARY:...

  6. Volume$3, number 3 CHEMICAL. PHYSICS LETTERS 1 Februrf 1978 INTERACTION OF METHANOL WITH RUTHENIUM

    E-Print Network [OSTI]

    Goodman, Wayne

    Volume$3, number 3 CHEMICAL. PHYSICS LETTERS 1 Februrf 1978 INTERACTION OF METHANOL WITH RUTHENIUM of methanol with a clean methods. Methanol dissociates upon adsorption at 300 K and yields Ha(g) and chemisorbed CO as the domiwt

  7. POLICY FLASH 2014-17 Revised Acquisition Letter 2013-11- Non...

    Energy Savers [EERE]

    POLICY FLASH 2014-17 Revised Acquisition Letter 2013-11- Non-Management and Operating (Non-M&O) Contractor Business Systems Clauses for Section H - Earned Value Management Clause...

  8. Operations Research Letters 38 (2010) 550555 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Nelson, Barry L.

    2010-01-01

    Operations Research Letters 38 (2010) 550­555 Contents lists available at ScienceDirect Operations Engineering and Logistics Management, The Hong Kong University of Science and Technology, Clear Water Bay

  9. LETTER doi:10.1038/nature13436 Tracking photon jumps with repeated quantum

    E-Print Network [OSTI]

    Devoret, Michel H.

    LETTER doi:10.1038/nature13436 Tracking photon jumps with repeated quantum non-demolition parity measurements L. Sun1 {, A. Petrenko1 , Z. Leghtas1 , B. Vlastakis1 , G. Kirchmair1 {, K. M. Sliwa1 , A. Narla1

  10. ELSEVIER Earth and Planetary Science Letters 169 (1999) 7183 Geochronology and palaeomagnetism of the Hunnedalen dykes,

    E-Print Network [OSTI]

    Torsvik, Trond Helge

    1999-01-01

    ELSEVIER Earth and Planetary Science Letters 169 (1999) 71­83 Geochronology and palaeomagnetism magnetic polarity, and, when considered in the context of the new geochronologic data, require. Keywords: paleomagnetism; geochronology; upper Proterozoic; Grenvillian orogeny 1. Introduction

  11. Acquisition Letter 2009-03 Acquisition Planning-Extending A Management...

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

    Planning AcquisitionLetter2009dash03Rev1.pdf More Documents & Publications Subject: Cost and Price Analysis Microsoft Word - Policy Flash 2010-67 Attachment 1 Subject: Cost...

  12. Physics Letters A 342 (2005) 397403 www.elsevier.com/locate/pla

    E-Print Network [OSTI]

    Chin, Siu A.

    2005-01-01

    Physics Letters A 342 (2005) 397­403 www.elsevier.com/locate/pla Exact evolution of time (2005) 397­403 In this work, we show that the evolution of any factorized, time-reversible integrators

  13. International Snow Science Workshop Grenoble Chamonix Mont-Blanc -2013 Measurements of triggering stress transmitted through the upper snow cover

    E-Print Network [OSTI]

    Jamieson, Bruce

    International Snow Science Workshop Grenoble ­ Chamonix Mont-Blanc - 2013 Measurements of triggering stress transmitted through the upper snow cover Scott Thumlert 1 , Bruce Jamieson 1 1 Dept from human triggers penetrates the snow cover. In the majority of fatal avalanches, skiers

  14. Evidence for static stress changes triggering the 1999 eruption of Cerro Negro Volcano, Nicaragua and regional aftershock sequences

    E-Print Network [OSTI]

    Connor, Charles

    Evidence for static stress changes triggering the 1999 eruption of Cerro Negro Volcano, Nicaragua explain this coupling through static stress changes following three Mw 5.2 earthquakes. We use focal seismicity and volcanism, and suggests that these small changes in static stress can trigger subsequent

  15. A Fast Topological Trigger for Real Time Analysis of Nanosecond Phenomena; Opening the Gamma Ray Window to Our Universe

    SciTech Connect (OSTI)

    Krennrich, Frank Iowa State University

    2013-09-24

    This work was to enable the development of a proof-of-principle nanosecond trigger system that is designed to perform a real time analysis of fast Cherenkov light flashes from air showers. The basic building blocks of the trigger system have been designed and constructed, and a real world system is now operating in the VERITAS experiment.

  16. Letter box line blackener for the HDTV/conventional-analog hybrid system

    DOE Patents [OSTI]

    Wysocki, Frederick J.; Nickel, George H.

    2006-07-18

    A blackener for letter box lines associated with a HDTV/conventional-analog hybrid television transmission where the blackener counts horizontal sync pulses contained in the HDTV/conventional-analog hybrid television transmission and determines when the HDTV/conventional-analog hybrid television transmission is in letter-box lines: if it is, then the blackener sends substitute black signal to an output; and if it is not, then the blackener sends the HDTV/conventional-analog hybrid television transmission to the output.

  17. Authentic, Dialogic Writing: The Case of a Letter to the Editor

    E-Print Network [OSTI]

    Hallman, Heidi L.

    2009-01-01

    , dialogic and dialogism, attributed to Rus- sian scholar Mikhail Bakhtin, articulate the philos- ophy that utterances (distinct pieces of spoken or Three students burst into Bob Schaefer’s third-hour English class the day of the letter’s printing... “From the Secondary Section” in this issue for excellent suggestions. Works Cited Bakhtin, Mikhail. The Dialogic Imagination. Austin: U of Texas P, 1981. ———. Speech Genres and Other Late Essays Ed. Caryl Emer- son and Michael Holquist. Austin: U...

  18. POLICY FLASH 2015-31- Acquisition Letter No. AL 2015-06, Performance of Inherently Governmental and Critical Functions

    Broader source: Energy.gov [DOE]

    Attached is the final Acquisition Letter (AL) No. AL 2015-06, Performance of Inherently Governmental and Critical Functions, dated July 01, 2015. This AL provides guidance to DOE and NNSA HCAs and COs for implementing OFPP Policy Letter 11-01, Performance of Inherently Governmental and Critical Functions. The guidance included in this AL is intended to serve as interim guidance for DOE until such time as the Federal Acquisition Regulation (FAR) is amended to implement the Policy Letter in full detail.

  19. Tetmhedmn Letters. Vol. 35, No. 27. pp. 4731-4734,~~ Elsevia S&ace Ltd

    E-Print Network [OSTI]

    Paré, Paul W.

    Tetmhedmn Letters. Vol. 35, No. 27. pp. 4731-4734,~~ Elsevia S&ace Ltd Printed in Great Britain oo4

  20. POLICY FLASH 2015-31- Acquisition Letter No. AL 2015-07, Performance of Inherently Governmental and Critical Functions

    Broader source: Energy.gov [DOE]

    Attached is revised Acquisition Letter (AL) No. AL 2015-07, Performance of Inherently Governmental and Critical Functions, dated July 07, 2015. This AL provides guidance to DOE and NNSA HCAs and COs for implementing OFPP Policy Letter 11-01, Performance of Inherently Governmental and Critical Functions. We are re-issuing this AL to correct the AL number, and to remove item #24 from Appendix A of OFPP Policy Letter 11-01. The guidance included in this AL is intended to serve as interim guidance for DOE until such time as the Federal Acquisition Regulation (FAR) is amended to implement the Policy Letter in full detail.

  1. Convection Triggering

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the followingConcentratingPortal Controlling

  2. Performance and development for the Inner Detector Trigger Algorithms at ATLAS

    E-Print Network [OSTI]

    Penc, Ondrej; The ATLAS collaboration

    2015-01-01

    A redesign of the tracking algorithms for the ATLAS trigger for Run 2 starting in spring 2015 is in progress. The ATLAS HLT software has been restructured to run as a more flexible single stage HLT, instead of two separate stages (Level 2 and Event Filter) as in Run 1. The new tracking strategy employed for Run 2 will use a Fast Track Finder (FTF) algorithm to seed subsequent Precision Tracking, and will result in improved track parameter resolution and faster execution times than achieved during Run 1. The performance of the new algorithms has been evaluated to identify those aspects where code optimisation would be most beneficial. The performance and timing of the algorithms for electron and muon reconstruction in the trigger are presented. The profiling infrastructure, constructed to provide prompt feedback from the optimisation, is described, including the methods used to monitor the relative performance improvements as the code evolves.

  3. GPUs for the realtime low-level trigger of the NA62 experiment at CERN

    E-Print Network [OSTI]

    Ammendola, R; Biagioni, A; Chiozzi, S; Cotta Ramusino, A; Fantechi, R; Fiorini, M; Gianoli, A; Graverini, E; Lamanna, G; Lonardo, A; Messina, A; Neri, I; Pantaleo, F; Paolucci, P S; Piandani, R; Pontisso, L; Simula, F; Sozzi, M; Vicini, P

    2015-01-01

    A pilot project for the use of GPUs (Graphics processing units) in online triggering ap- plications for high energy physics experiments (HEP) is presented. GPUs offer a highly parallel architecture and the fact that most of the chip resources are devoted to computa- tion. Moreover, they allow to achieve a large computing power using a limited amount of space and power. The application of online parallel computing on GPUs is shown for the synchronous low level trigger of NA62 experiment at CERN. Direct GPU communication using a FPGA-based board has been exploited to reduce the data transmission latency and results on a first field test at CERN will be highlighted. This work is part of a wider project named GAP (GPU application project), intended to study the use of GPUs in real-time applications in both HEP and medical imagin

  4. Deflected Jets or Hot Spots? Conical Correlations of Hard Trigger Particles

    E-Print Network [OSTI]

    Barbara Betz

    2010-12-20

    The double-peak structure observed in soft-hard dihadron correlations was recently studied intensively in order to learn more about the jet-induced medium excitation in ultrarelativistic heavy-ion collisions. Experimental data shows that the double-peak structure obtained for soft trigger particles coalesces into one peak for harder trigger particles. We demonstrate that this effect occurs when averaging over many jet events in a transversally expanding background, while a hot spot scenario always leads to two distinct peaks. This suggests to study soft-hard correlations induced by heavy-flavor jets with those generated by light-flavor jets at RHIC and LHC in order to really disentangle medium effects from jets.

  5. The readiness of ATLAS Trigger-DAQ system for the second LHC run

    E-Print Network [OSTI]

    Rammensee, Michael; The ATLAS collaboration

    2015-01-01

    After its first shutdown, LHC will provide pp collisions with increased luminosity and energy. In the ATLAS experiment, the Trigger and Data Acquisition (TDAQ) system has been upgraded to deal with the increased event rates. The updated system is radically different from the previous implementation, both in terms of architecture and expected performance. The main architecture has been reshaped in order to profit from the technological progress and to maximize the flexibility and efficiency of the data selection process. The trigger system in ATLAS consists of a hardware Level-1 (L1) and a software based high-level trigger (HLT) that reduces the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of a few hundred Hz. The pre-existing two-level software filtering, known as L2 and the Event Filter, are now merged into a single process, performing incremental data collection and analysis. This design has many advantages, among which are: the radical simplification of the architec...

  6. The BTeV DAQ and Trigger System - Some throughput, usability and fault tolerance aspects

    SciTech Connect (OSTI)

    Erik Edward Gottschalk et al.

    2001-08-20

    As presented at the last CHEP conference, the BTeV triggering and data collection pose a significant challenge in construction and operation, generating 1.5 Terabytes/second of raw data from over 30 million detector channels. We report on facets of the DAQ and trigger farms. We report on the current design of the DAQ, especially its partitioning features to support commissioning of the detector. We are exploring collaborations with computer science groups experienced in fault tolerant and dynamic real-time and embedded systems to develop a system to provide the extreme flexibility and high availability required of the heterogeneous trigger farm ({approximately} ten thousand DSPs and commodity processors). We describe directions in the following areas: system modeling and analysis using the Model Integrated Computing approach to assist in the creation of domain-specific modeling, analysis, and program synthesis environments for building complex, large-scale computer-based systems; System Configuration Management to include compilable design specifications for configurable hardware components, schedules, and communication maps; Runtime Environment and Hierarchical Fault Detection/Management--a system-wide infrastructure for rapidly detecting, isolating, filtering, and reporting faults which will be encapsulated in intelligent active entities (agents) to run on DSPs, L2/3 processors, and other supporting processors throughout the system.

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

    E-Print Network [OSTI]

    Kobayashi, Dai; The ATLAS collaboration

    2015-01-01

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

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

    E-Print Network [OSTI]

    Kobayashi, Dai; The ATLAS collaboration

    2015-01-01

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

  9. Performance and development plans for the Inner Detector trigger algorithms at ATLAS

    E-Print Network [OSTI]

    Martin-haugh, Stewart; The ATLAS collaboration

    2015-01-01

    A description of the design and performance of the newly re-implemented tracking algorithms for the ATLAS trigger for LHC Run 2, to commence in spring 2015, is presented. The ATLAS High Level Trigger (HLT) has been restructured to run as a more flexible single stage process, rather than the two separate Level 2 and Event Filter stages used during Run 1. To make optimal use of this new scenario, a new tracking strategy has been implemented for Run 2. This new strategy will use a FastTrackFinder algorithm to directly seed the subsequent Precision Tracking, and will result in improved track parameter resolution and significantly faster execution times than achieved during Run 1 and with better efficiency. The timings of the algorithms for electron and tau track triggers are presented. The profiling infrastructure, constructed to provide prompt feedback from the optimisation, is described, including the methods used to monitor the relative performance improvements as the code evolves. The online deployment and co...

  10. Performance and development plans for the Inner Detector trigger algorithms at ATLAS

    E-Print Network [OSTI]

    Martin-haugh, Stewart; The ATLAS collaboration

    2015-01-01

    A description of the design and performance of the newly re-implemented tracking algorithms for the ATLAS trigger for LHC Run 2, to commence in spring 2015, is presented. The ATLAS High Level Trigger (HLT) has been restructured to run as a more flexible single stage process, rather than the two separate Level 2 and Event Filter stages used during Run 1. To make optimal use of this new scenario, a new tracking strategy has been implemented for Run 2. This new strategy will use a Fast Track Finder (FTF) algorithm to directly seed the subsequent Precision Tracking, and will result in improved track parameter resolution and significantly faster execution times than achieved during Run 1 and with better efficiency. The performance and timing of the algorithms for electron and tau track triggers are presented. The profiling infrastructure, constructed to provide prompt feedback from the optimisation, is described, including the methods used to monitor the relative performance improvements as the code evolves. The o...

  11. An evaluation of GPUs for use in an upgraded ATLAS High Level Trigger

    E-Print Network [OSTI]

    Tavares Delgado, Ademar; The ATLAS collaboration; Bold, Tomasz; Augusto, Jose; Kama, Sami; Negrini, Matteo; Sidoti, Antonio; Rinaldi, Lorenzo; Tupputi, Salvatore; Baines, John; Bauce, Matteo; Messina, Andrea; Emeliyanov, Dmitry; Elliott, Aaron Kyle; Greenwood, Zeno Dixon; Laosooksathit, Supada

    2015-01-01

    ATLAS is a general purpose particle physics experiment located on the LHC collider at CERN. The ATLAS Trigger system consists of two levels, the first level (L1) implemented in hardware and the High Level Trigger (HLT) implemented in software running on a farm of commodity CPU. The HLT reduces the trigger rate from the 100 kHz L1 accept rate to 1 kHz for recording requiring an average per-event processing time of ~250 ms for this task. The HLT selection is based on reconstructing tracks in the Inner Detector and Muon Spectrometer and clusters of energy deposited in the Calorimeter. Performing this reconstruction within the available HLT farm resources presents a significant challenge that will increase significantly after future LHC upgrades resulting in higher detector occupancies. General purpose Graphics Processor Units (GPGPU) are being evaluated for possible future inclusion in an upgraded HLT farm. We report on a demonstrator that has been developed consisting of GPGPU implementations of the Calorimeter...

  12. First Operational Experience with the LHC Beam Dump Trigger Synchronisation Unit

    E-Print Network [OSTI]

    Antoine, A; Magnin, N; Juteau, P; Voumard, N

    2011-01-01

    Two LHC Beam Dumping Systems (LBDS) remove the counter-rotating beams safely from the collider during setting up of the accelerator, at the end of a physics run and in case of emergencies. Dump requests can come from 3 different sources: the machine protection system in emergency cases, the machine timing system for scheduled dumps or the LBDS itself in case of internal failures. These dump requests are synchronized with the 3 ?s beam abort gap in a fail-safe redundant Trigger Synchronization Unit (TSU) based on a Digital Phase Locked Loop (DPLL), locked onto the LHC beam revolution frequency with a maximum phase error of 40 ns. The synchronized trigger pulses coming out of the TSU are then distributed to the high voltage generators of the beam dump kickers through a redundant fault-tolerant trigger distribution system. This paper describes the operational experience gained with the TSU since its commissioning with beam in 2009, and highlights the improvements, which have been implemented f...

  13. Performance studies of the new stereoscopic Sum-Trigger-II of MAGIC after one year of operation

    E-Print Network [OSTI]

    Dazzi, F; Lopez, M; Nakajima, D; Garcia, J Rodriguez; Schweizer, T

    2015-01-01

    MAGIC is a stereoscopic system of two Imaging Air Cherenkov Telescopes (IACTs) located at La Palma (Canary Islands, Spain) and working in the field of very high energy gamma-ray astronomy. It makes use of a traditional digital trigger with an energy threshold of around 55 GeV. A novel trigger strategy, based on the analogue sum of signals from partially overlapped patches of pixels, leads to a lower threshold. In 2008, this principle was proven by the detection of the Crab Pulsar at 25 GeV by MAGIC in single telescope operation. During Winter 2013/14, a new system, based on this concept, was implemented for stereoscopic observations after several years of development. In this contribution the strategy of the operative stereoscopic trigger system, as well as the first performance studies, are presented. Finally, some possible future improvements to further reduce the energy threshold of this trigger are addressed.

  14. The Definitive Reform. How the 1996 Electoral Reform Triggered the Demise of the PRI's Dominant-Party Regime

    E-Print Network [OSTI]

    Garrido de Sierra, Sebastián

    2014-01-01

    the PRI Approve the Reform? . . . . . . . . . . . . . . .vi 4 How the 1996 Reform Triggered the End of the PRI’seffect of the 1996 electoral reform on the PRI’s unity . The

  15. GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, A new 1.6-micron map of Titan's surface

    E-Print Network [OSTI]

    Brown, Michael E.

    GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, A new 1.6-micron map of Titan's surface are likely craters. Accepted for publication in Geophysical Research Letters. Copyright 2004 American Geophysical Union. Further re- production or electronic distribution is not permitted. 1. Introduction

  16. IEEE SIGNAL PROCESSING LETTERS, VOL. 14, NO. 6, JUNE 2007 377 Outage Analysis and Optimal Power Allocation for

    E-Print Network [OSTI]

    Su, Weifeng

    IEEE SIGNAL PROCESSING LETTERS, VOL. 14, NO. 6, JUNE 2007 377 Outage Analysis and Optimal Power. Ray Liu, Fellow, IEEE Abstract--In this letter, a novel approach for outage probability analysis on that approximation, an outage probability bound is derived which proves to be tight at high SNR. Based on the derived

  17. IEEE COMMUNICATIONS LETTERS, VOL. 9, NO. 12, DECEMBER 2005 1 An Efficient Power-Saving Mechanism for

    E-Print Network [OSTI]

    IEEE COMMUNICATIONS LETTERS, VOL. 9, NO. 12, DECEMBER 2005 1 An Efficient Power-Saving Mechanism Golmie Member, IEEE Abstract-- In this letter, we propose an efficient power-saving mechanism using off during idle state without any periodic wake-up in order to save power consumption while

  18. IEEE SIGNAL PROCESSING LETTERS, VOL. 9, NO. 8, AUGUST 2002 233 On a New Blind Signal Extraction Algorithm

    E-Print Network [OSTI]

    Cichocki, Andrzej

    IEEE SIGNAL PROCESSING LETTERS, VOL. 9, NO. 8, AUGUST 2002 233 On a New Blind Signal Extraction Algorithm: Different Criteria and Stability Analysis Sergio A. Cruces-Alvarez, Associate Member, IEEE, Andrzej Cichocki, Member, IEEE, and Shun-Ichi Amari, Fellow, IEEE Abstract--In this letter, we consider

  19. IEEE ELECTRON DEVICE LETTERS, VOL. 29, NO. 2, FEBRUARY 2008 183 Externally Assembled Gate-All-Around Carbon

    E-Print Network [OSTI]

    IEEE ELECTRON DEVICE LETTERS, VOL. 29, NO. 2, FEBRUARY 2008 183 Externally Assembled Gate-All-Around Carbon Nanotube Field-Effect Transistor Zhihong Chen, Member, IEEE, Damon Farmer, Sheng Xu, Roy Gordon, Phaedon Avouris, Member, IEEE, and Joerg Appenzeller, Senior Member, IEEE Abstract--In this letter, we

  20. IEEE SIGNAL PROCESSING LETTERS, VOL. 11, NO. 7, JULY 2004 613 Identification of Speech Source Coupling Between

    E-Print Network [OSTI]

    Cohen, Israel

    IEEE SIGNAL PROCESSING LETTERS, VOL. 11, NO. 7, JULY 2004 613 Identification of Speech Source variance is achievable. Index Terms--Array signal processing, speech enhancement, system identification. I between sensors in response to a desired speech signal. In this letter, a system identification approach

  1. In utramque partem tum Graece tum Latine: Code-Switching and Cultured Identity in Cicero's Letters to Atticus

    E-Print Network [OSTI]

    Jackson, Jamie

    2014-05-31

    In this thesis I investigate the linguistic phenomenon of code-switching between Latin and Greek in the letters of Cicero to his friend Atticus. I do this by surveying the individual instances of Greek in the letters to Atticus. I then record...

  2. The infrared medium-deep survey. II. How to trigger radio AGNs? Hints from their environments

    SciTech Connect (OSTI)

    Karouzos, Marios; Im, Myungshin; Kim, Jae-Woo; Lee, Seong-Kook; Jeon, Yiseul; Choi, Changsu; Hong, Jueun; Hyun, Minhee; Jun, Hyunsung David; Kim, Dohyeong; Kim, Yongjung; Kim, Ji Hoon; Kim, Duho; Park, Won-Kee; Taak, Yoon Chan; Yoon, Yongmin; Chapman, Scott; Pak, Soojong; Edge, Alastair

    2014-12-10

    Activity at the centers of galaxies, during which the central supermassive black hole is accreting material, is nowadays accepted to be rather ubiquitous and most probably a phase of every galaxy's evolution. It has been suggested that galactic mergers and interactions may be the culprits behind the triggering of nuclear activity. We use near-infrared data from the new Infrared Medium-Deep Survey and the Deep eXtragalactic Survey of the VIMOS-SA22 field and radio data at 1.4 GHz from the FIRST survey and a deep Very Large Array survey to study the environments of radio active galactic nuclei (AGNs) over an area of ?25 deg{sup 2} and down to a radio flux limit of 0.1 mJy and a J-band magnitude of 23 mag AB. Radio AGNs are predominantly found in environments similar to those of control galaxies at similar redshift, J-band magnitude, and (M{sub u} – M{sub r} ) rest-frame color. However, a subpopulation of radio AGNs is found in environments up to 100 times denser than their control sources. We thus preclude merging as the dominant triggering mechanism of radio AGNs. By fitting the broadband spectral energy distribution of radio AGNs in the least and most dense environments, we find that those in the least dense environments show higher radio-loudness, higher star formation efficiencies, and higher accretion rates, typical of the so-called high-excitation radio AGNs. These differences tend to disappear at z > 1. We interpret our results in terms of a different triggering mechanism for these sources that is driven by mass loss through winds of young stars created during the observed ongoing star formation.

  3. THE KINEMATICS AND PLASMA PROPERTIES OF A SOLAR SURGE TRIGGERED BY CHROMOSPHERIC ACTIVITY IN AR11271

    SciTech Connect (OSTI)

    Kayshap, P.; Srivastava, Abhishek K. [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India)] [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India); Murawski, K., E-mail: kmur@kft.umcs.lublin.pl [Group of Astrophysics, UMCS, ul. Radziszewskiego 10, 20-031 Lublin (Poland)

    2013-01-20

    We observe a solar surge in NOAA AR11271 using the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly 304 A image data on 2011 August 25. The surge rises vertically from its origin up to a height of Almost-Equal-To 65 Mm with a terminal velocity of Almost-Equal-To 100 km s{sup -1}, and thereafter falls and fades gradually. The total lifetime of the surge was Almost-Equal-To 20 minutes. We also measure the temperature and density distribution of the observed surge during its maximum rise and find an average temperature and a density of 2.0 MK and 4.1 Multiplication-Sign 10{sup 9} cm{sup -3}, respectively. The temperature map shows the expansion and mixing of cool plasma lagging behind the hot coronal plasma along the surge. Because SDO/HMI temporal image data do not show any detectable evidence of significant photospheric magnetic field cancellation for the formation of the observed surge, we infer that it is probably driven by magnetic-reconnection-generated thermal energy in the lower chromosphere. The radiance (and thus the mass density) oscillations near the base of the surge are also evident, which may be the most likely signature of its formation by a reconnection-generated pulse. In support of the present observational baseline of the triggering of the surge due to chromospheric heating, we devise a numerical model with conceivable implementation of the VAL-C atmosphere and a thermal pulse as an initial trigger. We find that the pulse steepens into a slow shock at higher altitudes which triggers plasma perturbations exhibiting the observed features of the surge, e.g., terminal velocity, height, width, lifetime, and heated fine structures near its base.

  4. Improving the ATLAS physics potential with the Fast Track Trigger System

    E-Print Network [OSTI]

    Cavaliere, Viviana; The ATLAS collaboration

    2015-01-01

    The ATLAS Fast TracKer (FTK) is a custom electronics system that will operate at the full Level-1 accept rate, 100 kHz, to provide high quality tracks as input to the High-Level Trigger. The event reconstruction is performed in hardware, thanks to the massive parallelism of associative memories (AM) and FPGAs. We present the advantages for the physics goals of the ATLAS experiment and the recent results on the design, technological advancements and testing of some of the core components used in the processor.

  5. The Phase-1 Upgrade of the ATLAS First Level Calorimeter Trigger

    E-Print Network [OSTI]

    Schwienhorst, Reinhard; The ATLAS collaboration

    2015-01-01

    The ATLAS level-1 calorimeter trigger pursues a series of upgrades in order to face the challenges posed by the upcoming increase of the LHC luminosity. The hardware built during the Phase-1 upgrade will be installed in 2018. The calorimeter data will be available with a tenfold increase of granularity which allows to employ more sophisticated identification algorithms. To cope with this increase of input data, an entirely new custom electronics processing system will be built exploiting the technological advances in the design of complex PCBs, powerful FPGAs, new crate technologies and high speed optical interconnects.

  6. INITIATORS AND TRIGGERING CONDITIONS FOR ADAPTIVE AUTOMATION IN ADVANCED SMALL MODULAR REACTORS

    SciTech Connect (OSTI)

    Katya L Le Blanc; Johanna h Oxstrand

    2014-04-01

    It is anticipated that Advanced Small Modular Reactors (AdvSMRs) will employ high degrees of automation. High levels of automation can enhance system performance, but often at the cost of reduced human performance. Automation can lead to human out-of the loop issues, unbalanced workload, complacency, and other problems if it is not designed properly. Researchers have proposed adaptive automation (defined as dynamic or flexible allocation of functions) as a way to get the benefits of higher levels of automation without the human performance costs. Adaptive automation has the potential to balance operator workload and enhance operator situation awareness by allocating functions to the operators in a way that is sensitive to overall workload and capabilities at the time of operation. However, there still a number of questions regarding how to effectively design adaptive automation to achieve that potential. One of those questions is related to how to initiate (or trigger) a shift in automation in order to provide maximal sensitivity to operator needs without introducing undesirable consequences (such as unpredictable mode changes). Several triggering mechanisms for shifts in adaptive automation have been proposed including: operator initiated, critical events, performance-based, physiological measurement, model-based, and hybrid methods. As part of a larger project to develop design guidance for human-automation collaboration in AdvSMRs, researchers at Idaho National Laboratory have investigated the effectiveness and applicability of each of these triggering mechanisms in the context of AdvSMR. Researchers reviewed the empirical literature on adaptive automation and assessed each triggering mechanism based on the human-system performance consequences of employing that mechanism. Researchers also assessed the practicality and feasibility of using the mechanism in the context of an AdvSMR control room. Results indicate that there are tradeoffs associated with each mechanism, but that some are more applicable to the AdvSMR domain. The two mechanisms that consistently improve performance in laboratory studies are operator initiated adaptive automation based on hierarchical task delegation and the Electroencephalogram(EEG) –based measure of engagement. Current EEG methods are intrusive and require intensive analysis; therefore it is not recommended for an AdvSMR control rooms at this time. Researchers also discuss limitations in the existing empirical literature and make recommendations for further research.

  7. The Phase-1 Upgrade of the ATLAS First Level Calorimeter Trigger

    E-Print Network [OSTI]

    Schwienhorst, Reinhard; The ATLAS collaboration

    2015-01-01

    The ATLAS level-1 calorimeter trigger pursues a series of upgrades in order to face the challenges posed by the upcoming increase of the LHC beam energy and luminosity. The hardware built during the Phase-1 upgrade will be installed in 2018. The calorimeter data will be available with a tenfold increase of granularity which allows to employ more sophisticated identification algorithms. To cope with this increase of input data, an entirely new custom electronics processing system will be built exploiting the technological advances in the design of complex PCBs, powerful FPGAs, new crate technologies and high speed optical interconnects.

  8. Gamma Ray Burst triggering Supernova Explosion (and other effects on neighbouring stars)

    E-Print Network [OSTI]

    C. Sivaram; Kenath Arun

    2010-09-28

    The initial burst of a gamma ray burst (GRB) is usually followed by a longer-lived afterglow emitted at longer wavelengths. The evidence for a physical connection between GRBs and core collapse supernovae (SN) has increased since the discovery of GRB afterglows. So far SN signatures have been found in only a few GRBs. Here we propose the possibility of a GRB triggering the collapse of a WR or RG star in a binary system producing a SN, and typical signatures. We also look at the effects of GRBs on MS and WD stars in the neighbourhood. The possibility of GRBs retarding star formation in an interstellar cloud is also discussed.

  9. Use of modern software technology in the redesign of OPAL trigger software

    SciTech Connect (OSTI)

    Ackerstaff, K.; Khodabandeh, A.; Shears, T.

    1998-08-01

    The OPAL experiment at LEP has a central trigger system which is modular and VME based. An upgrade of the control software was necessary to increase the flexibility and maintainability of the system. The software has been completely re-engineered in a project which lasted from January until August 1997. The use and benefits of a customized software development environment as an instrumentation of the design process, and of the project infrastructure, are described. The importance of this approach for the success of the project and its suitability for use in real-time systems is demonstrated.

  10. SN-03 Trigger and Pre-Proposal Materials (ratecases/sn03)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput Analysis of Protein1-0845*RV 14800Small Angle X-RayFinalTrigger and

  11. Letter Report: Looking Ahead at Nuclear Fuel Resources

    SciTech Connect (OSTI)

    J. Stephen Herring

    2013-09-01

    The future of nuclear energy and its ability to fulfill part of the world’s energy needs for centuries to come depend on a reliable input of nuclear fuel, either thorium or uranium. Obviously, the present nuclear fuel cycle is completely dependent on uranium. Future thorium cycles will also depend on 235U or fissile isotopes separated from used fuel to breed 232Th into fissile 233U. This letter report discusses several emerging areas of scientific understanding and technology development that will clarify and enable assured supplies of uranium and thorium well into the future. At the most fundamental level, the nuclear energy community needs to appreciate the origins of uranium and thorium and the processes of planetary accretion by which those materials have coalesced to form the earth and other planets. Secondly, the studies of geophysics and geochemistry are increasing understanding of the processes by which uranium and thorium are concentrated in various locations in the earth’s crust. Thirdly, the study of neutrinos and particularly geoneutrinos (neutrinos emitted by radioactive materials within the earth) has given an indication of the overall global inventories of uranium and thorium, though little indication for those materials’ locations. Crustal temperature measurements have also given hints of the vertical distribution of radioactive heat sources, primarily 238U and 232Th, within the continental crust. Finally, the evolving technologies for laser isotope separation are indicating methods for reducing the energy input to uranium enrichment but also for tailoring the isotopic vectors of fuels, burnable poisons and structural materials, thereby adding another tool for dealing with long-term waste management.

  12. Post-Closure Inspection Letter Report for Corrective Action Units on the Nevada National Security Site

    SciTech Connect (OSTI)

    Boehleke, R. F.

    2014-05-06

    This letter serves as the post-closure inspection letter report for Corrective Action Units (CAUs) on the Nevada National Security Site for calendar year 2013. The inspections identified maintenance and repair is required at the following sites: sign and/or fence repair is necessary at CAUs 113, 137, 139, 140, 143, 262, 370, 371, 372, 374, 476, 478, 529, 542, and 560; animal burrows were identified at CAU 547; and erosion was identified at CAUs 366, 367, 383, 551, and 574. In addition, the following use restrictions were removed during 2013 and will no longer be inspected in 2014: 165, 357, and 528.

  13. Did the Solar System form in a sequential triggered star formation event?

    E-Print Network [OSTI]

    Parker, Richard J

    2015-01-01

    The presence and abundance of the short-lived radioisotopes (SLRs) $^{26}$Al and $^{60}$Fe during the formation of the Solar System is difficult to explain unless the Sun formed in the vicinity of one or more massive star(s) that exploded as supernovae. Two different scenarios have been proposed to explain the delivery of SLRs to the protosolar nebula: (i) direct pollution of the protosolar disc by supernova ejecta and (ii) the formation of the Sun in a sequential star formation event in which supernovae shockwaves trigger further star formation which is enriched in SLRs. The sequentially triggered model has been suggested as being more astrophysically likely than the direct pollution scenario. In this paper we investigate this claim by analysing a combination of $N$-body and SPH simulations of star formation. We find that sequential star formation would result in large age spreads (or even bi-modal age distributions for spatially coincident events) due to the dynamical relaxation of the first star-formation ...

  14. Hydrogen-Triggered Type I X-ray Bursts in a Two-Zone Model

    E-Print Network [OSTI]

    Randall L. Cooper; Ramesh Narayan

    2007-02-01

    We use the two-zone model of Cooper & Narayan to study the onset and time evolution of hydrogen-triggered type I X-ray bursts on accreting neutron stars. At the lowest accretion rates, thermally unstable hydrogen burning ignites helium as well and produces a mixed hydrogen and helium burst. For somewhat higher accretion rates, thermally unstable hydrogen burning does not ignite helium and thus triggers only a weak hydrogen flash. The peak luminosities of weak hydrogen flashes are typically much lower than the accretion luminosity. These results are in accord with previous theoretical work. We find that a series of weak hydrogen flashes generates a massive layer of helium that eventually ignites in an energetic pure helium flash. Although previously conjectured, this is the first time such bursting behavior has been actually demonstrated in a theoretical model. For yet higher accretion rates, hydrogen burning is thermally stable and thus steadily generates a layer of helium that ultimately ignites in a pure helium flash. We find that, for a narrow range of accretion rates between the mixed hydrogen and helium burst and weak hydrogen flash regimes, unstable hydrogen burning ignites helium only after a short series of weak hydrogen flashes has generated a sufficiently deep layer of helium. These bursts have fluences that are intermediate between those of normal mixed hydrogen and helium bursts and energetic pure helium flashes.

  15. An Optimization of the FPGA Based Wavelet Trigger in Radio Detection of Cosmic Rays

    E-Print Network [OSTI]

    ,

    2014-01-01

    Experiments that observe coherent radio emission from extensive air showers induced by ultra-high energy cosmic rays are designed for a detailed study of the development of the electromagnetic part of air showers. Radio detectors can operate with 100% up time as e.g. surface detectors based on water-Cherenkov tanks. They are being developed for ground-based experiments (e.g. the Pierre Auger Observatory) as another type of air shower detector in addition to the fluorescence detectors, which operate with only ~10% of duty in dark nights. The radio signals from air showers are caused by the coherent emission due to geomagnetic radiation and charge excess processes. Currently used self-triggers in radio detectors often generate a dense stream of data, which is analyzed afterwards. Huge amounts of registered data requires a significant man-power for the off-line analysis. An improvement of the trigger efficiency becomes a relevant factor. In this work, Morlet wavelets with various scaling factors were used for an...

  16. LETTER doi:10.1038/nature09407 Global metabolic impacts of recent climate warming

    E-Print Network [OSTI]

    Huey, Raymond B.

    LETTER doi:10.1038/nature09407 Global metabolic impacts of recent climate warming Michael E. Dillon and projected climate warming2,13,14 . Global warming is probably having profound and diverse effects phenology3,4 , community interactions5 , genetics3,6 and extinctions7 have been attributed to recent global

  17. Physics Letters A 353 (2006) 216220 www.elsevier.com/locate/pla

    E-Print Network [OSTI]

    Li, Baowen

    2006-01-01

    Physics Letters A 353 (2006) 216­220 www.elsevier.com/locate/pla Fidelity of a Bose­Einstein investigate fidelity for the quantum evolution of a Bose­Einstein condensate and reveal its general property.75.-b; 05.45.-a; 03.75.Kk; 42.50.Vk Instability issue of Bose­Einstein condensation (BEC) has been

  18. School of Electrical and Computer Engineering The University of Oklahoma Letter of Recommendation

    E-Print Network [OSTI]

    Przebinda, Tomasz

    School of Electrical and Computer Engineering The University of Oklahoma Letter in Electrical/Computer Engineering? Top 5% ____ Top 10% ____ Top 25% ____ Upper 50% ____ Lower 50% ____ Do you of Electrical and Computer Engineering, 110 West Boyd, DEH Room 150, Norman, OK 73019-1102 #12;

  19. LETTER Communicated by Nancy Kopell Fast Global Oscillations in Networks of Integrate-and-Fire

    E-Print Network [OSTI]

    Hakim, Vincent

    LETTER Communicated by Nancy Kopell Fast Global Oscillations in Networks of Integrate-and-Fire Neurons with Low Firing Rates Nicolas Brunel Vincent Hakim LPS, Ecole Normale Sup´erieure, 75231 Paris integrate-and-fire neurons in a regime where individual neu- rons emit spikes irregularly and at a low rate

  20. Neuroscience Letters 392 (2006) 159164 Noxious heat induces fMRI activation in two anatomically

    E-Print Network [OSTI]

    Chabris, Christopher F.

    2006-01-01

    Neuroscience Letters 392 (2006) 159­164 Noxious heat induces fMRI activation in two anatomically; accepted 7 September 2005 Abstract Using functional magnetic resonance imaging (fMRI) we found were instructed on how to rate their pain intensity during the scan using a standard 11-point Likerts

  1. Letter to the Editor Phylogenetic evidence for parallel adaptive origins of digestive

    E-Print Network [OSTI]

    Zhang, Jianzhi

    Letter to the Editor Phylogenetic evidence for parallel adaptive origins of digestive RNases proteins, and site-directed mutagenesis showed that the new genes acquired enhanced digestive efficiencies through three parallel amino acid replacements driven by positive selection. They also lost a non-digestive

  2. IEEE ELECTRON DEVICE LETTERS, VOL. 20, NO. 2, FEBRUARY 1999 97 Effects of Longitudinal Grain Boundaries

    E-Print Network [OSTI]

    IEEE ELECTRON DEVICE LETTERS, VOL. 20, NO. 2, FEBRUARY 1999 97 Effects of Longitudinal Grain grains in a direction longitudinal to that of the current flow, whereas in SPC-TFT's, the grain by a competitive earmarked research grant from the Research Grants Council of Hong Kong and a grant from the Hong

  3. LETTER Communicated by Adrienne Fairhall Spike Train Probability Models for Stimulus-Driven Leaky

    E-Print Network [OSTI]

    Kass, Rob

    process models have been introduced in the literature: the time-rescaled renewal process (TRRP) and time-rescaled renewal-process models (Barbieri, Quirk, Frank, Wilson, & Brown, 2001; Koyama & ShinomotoLETTER Communicated by Adrienne Fairhall Spike Train Probability Models for Stimulus-Driven Leaky

  4. Systems & Control Letters 59 (2010) 8797 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Leonard, Naomi

    2010-01-01

    and behavioral economics experiments to investigate human decision making. The human subject makes a choice & Control Letters journal homepage: www.elsevier.com/locate/sysconle Convergence in human decision 2010 Keywords: Human decision making Two-alternative forced-choice task Win-stay, lose-switch model

  5. IEEE ELECTRON DEVICE LETTERS, VOL. 27, NO. 6, JUNE 2006 489 Modeling of Charge Trapping Induced

    E-Print Network [OSTI]

    Dutton, Robert W.

    IEEE ELECTRON DEVICE LETTERS, VOL. 27, NO. 6, JUNE 2006 489 Modeling of Charge Trapping Induced a distributed tunneling model to investigate the threshold-voltage instability induced by charge trapping bias varies [1], and the latter effect has been attributed to the distributed bulk electron traps [2

  6. FDA Exemption Letter, 78EL-01DOE by LSSG for GOCG Facilities

    Broader source: Energy.gov [DOE]

    Food and Drug Administration response to Department of Energy's request for clarification of the circumstances under which a DOE Government Owned Contractor Operated (GOCO) facility may be considered a laser manufacturer and subject to FDA laser manufacturer requirements and other points of interpretation of the FDA Exemption Letter, 78EL-01DOE (DOE exemption or exemption) by the LSSG for GOCG facilities.

  7. LETTER Communicated by Daniel Amit Effects of Fast Presynaptic Noise in Attractor Neural Networks

    E-Print Network [OSTI]

    Garrido, Pedro L.

    LETTER Communicated by Daniel Amit Effects of Fast Presynaptic Noise in Attractor Neural Networks J neural networks. The noise occurs on a very short timescale compared to that for the neuron dynamics. We thus describe a mechanism by which fast presynaptic noise enhances the neural network sensitivity

  8. 716 IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 14, NO. 3, MAY 2003 Letters__________________________________________________________________________________________

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    716 IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 14, NO. 3, MAY 2003 Letters__________________________________________________________________________________________ Global Exponential Stability of Competitive Neural Networks With Different Time Scales A. Meyer-Baese, S- organization must include the aspects of long and short-term memory. The behavior of such a neural network

  9. Volume 145,number I CHEMICAL PHYSICS LETTERS 18March 1988 HYDROPHOBIC INTERACTION BETWEEN A METHANE MOLECULE

    E-Print Network [OSTI]

    Berne, Bruce J.

    . This is equivalent to study- ing the hydrophobic driving force of a small hydro- carbon towards a large hydrophobic perturbs the water structure in such a way as to minimize the loss of hydrogen bonds. For small non CHEMICAL PHYSICS LETTERS 18March 1988 considers a small sphere near a large sphere it is dif- ficult

  10. 292 IEEE COMMUNICATIONS LETTERS, VOL. 9, NO. 4, APRIL 2005 ISI-Free Pulses with

    E-Print Network [OSTI]

    Chaturvedi, A K

    292 IEEE COMMUNICATIONS LETTERS, VOL. 9, NO. 4, APRIL 2005 ISI-Free Pulses with Reduced Sensitivity the linear combination of two ISI free pulses, the Raised Cosine (RC) and the recently proposed Better Than there is a need for pulses that are ISI free and at the same time have low sensitivity to timing errors. One

  11. ELSEVIER Earth and Planetary Science Letters 173 (1999) 285298 www.elsevier.com/locate/epsl

    E-Print Network [OSTI]

    Harrison, Mark

    1999-01-01

    and Geoscience Institute, University of Utah, Salt Lake City, UT 84108, USA d U.S. Geological Survey, 345 al. / Earth and Planetary Science Letters 173 (1999) 285­298 Fig. 1. Location and tectonic setting of Geysers geothermal field. (a) Late Cenozoic tectonic evolution of western North America [20]. (b) Clear

  12. Earth and Planetary Science Letters 415 (2015) 115 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Olsen, Kim Bak

    2015-01-01

    Earth and Planetary Science Letters 415 (2015) 1­15 Contents lists available at ScienceDirect Earth, California Institute of Technology, Pasadena, CA 91125, USA f Department of Geosciences, Princeton University distinct basin amplification and focusing of energy that reflects crustal structure described by the USR

  13. Earth and Planetary Science Letters 409 (2015) 232242 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Kirschvink, Joseph L.

    2015-01-01

    Energy Technology Company, Carbonate Stratigraphy Research & Development, 1500 Louisiana St., Rm 27134Earth and Planetary Science Letters 409 (2015) 232­242 Contents lists available at Science, California Institute of Technology, MC 170-25 1200 E. California Blvd., Pasadena, CA 91125, USA e Chevron

  14. LETTER doi:10.1038/nature14288 Reducing the energy cost of human walking using an

    E-Print Network [OSTI]

    Collins, Steven H.

    LETTER doi:10.1038/nature14288 Reducing the energy cost of human walking using an unpowered or electrical energy and deli- versno net positive mechanical work, yet reduces the metabolic cost of walking that minimize energy cost. Nearly any change to the human musculoskeletal system or its pattern of coordination

  15. ELSEVIER Earth and Planetary Science Letters 161 (1998) 85100 Subsidence and growth of Pacific Cretaceous plateaus

    E-Print Network [OSTI]

    Ito, Garrett

    1998-01-01

    ELSEVIER Earth and Planetary Science Letters 161 (1998) 85­100 Subsidence and growth of Pacific to constrain plateau subsidence histories which reflect mantle thermal and crustal accretionary processes. We find that total plateau subsidence is comparable to that expected of normal seafloor but less than

  16. Neuroscience Letters 401 (2006) 8691 Sexual dimorphism in song-induced ZENK expression

    E-Print Network [OSTI]

    Wade, Juli

    2006-01-01

    Neuroscience Letters 401 (2006) 86­91 Sexual dimorphism in song-induced ZENK expression sexual dimorphisms in the brains of adult zebra finches and canaries wherein regions that control song in males but not females [16,21]. While it is clear that Area X is highly sexually dimorphic and important

  17. 136 IEEE SIGNAL PROCESSING LETTERS, VOL. 11, NO. 2, FEBRUARY 2004 Subspace Leaky LMS

    E-Print Network [OSTI]

    Schniter, Philip

    136 IEEE SIGNAL PROCESSING LETTERS, VOL. 11, NO. 2, FEBRUARY 2004 Subspace Leaky LMS Brian D. Rigling, Member, IEEE, and Philip Schniter, Member, IEEE Abstract--The least mean squared (LMS) adaptive-leakage" modifications of LMS have been proposed to mitigate this drift, they inevitably introduce parameter bias which

  18. Statistics & Probability Letters 64 (2003) 147157 Can continuous-time stationary stable processes have discrete

    E-Print Network [OSTI]

    Abry, Patrice

    2003-01-01

    Statistics & Probability Letters 64 (2003) 147­157 Can continuous-time stationary stable processes = {X (t)}tR is a continuous-time strictly -stable, (0; 2), process which is stationary, that is implications. Theorem 1.1. A continuous-time strictly -stable stationary process X = {X (t)}tR with (0; 2) has

  19. Letters to Financial Times, February 28, 2014 Lesson for Ukraine is that resistance worked for Finland.

    E-Print Network [OSTI]

    Letters to Financial Times, February 28, 2014 Lesson for Ukraine is that resistance worked but to remain neutral in the cold war. The real lesson for Ukraine is that resistance worked in Finland under, and that Ukraine now has the real chance to leap to the west under the rubric of self-determination that Lenin

  20. NESDIS Strategic Plan FY2005-2010 Letter from the Assistant Administrator

    E-Print Network [OSTI]

    1 NESDIS Strategic Plan FY2005-2010 Letter from the Assistant Administrator: I am pleased to present the NOAA Satellites and Information Service (NESDIS) Strategic Plan. This Strategic Plan builds management. This Strategic Plan illustrates the numerous activities of NESDIS that directly support NOAA

  1. IEEE COMMUNICATIONS LETTERS, VOL. 17, NO. 1, JANUARY 2013 127 Capacity of Zero-Outage Scheme

    E-Print Network [OSTI]

    Candan, Cagatay

    IEEE COMMUNICATIONS LETTERS, VOL. 17, NO. 1, JANUARY 2013 127 Capacity of Zero-Outage Scheme Under Imprecise Channel State Information C¸ a~gatay Candan Abstract--The capacity of zero-outage scheme-to-noise-ratio fluctuates and the scheme suffers from com- munication outages. Exact analytical expressions characterizing

  2. April 1, 1995 / Vol. 20, No. 7 / OPTICS LETTERS 791 Intracavity technique for improved Raman / Rayleigh

    E-Print Network [OSTI]

    Long, Marshall B.

    April 1, 1995 / Vol. 20, No. 7 / OPTICS LETTERS 791 Intracavity technique for improved Raman cavity is modified to include sheet-forming optics and 100% reflecting end mirrors. In a comparison of this system with a laser configuration with the sheet-forming optics outside the cavity, the beam waist

  3. September 15, 1997 / Vol. 22, No. 18 / OPTICS LETTERS 1433 Optical bistability induced by mirror

    E-Print Network [OSTI]

    Fang-Yen, Christopher

    September 15, 1997 / Vol. 22, No. 18 / OPTICS LETTERS 1433 Optical bistability induced by mirror, Cambridge, Massachusetts 02139 Received May 2, 1997 We have observed optical bistability caused in 106 (ppm) have been successfully measured. © 1997 Optical Society of America Optical bistability

  4. 2028 OPTICS LETTERS / Vol. 29, No. 17 / September 1, 2004 Noncontact measurement of nerve displacement

    E-Print Network [OSTI]

    Fang-Yen, Christopher

    2028 OPTICS LETTERS / Vol. 29, No. 17 / September 1, 2004 Noncontact measurement of nerve motion in cells and other weakly scattering samples. © 2004 Optical Society of America OCIS codes: 120 describe here a novel dual-beam heterodyne low-coherence interfer- ometer and its application to optically

  5. 2094 OPTICS LETTERS / Vol. 28, No. 21 / November 1, 2003 Fundamental and vortex solitons in a

    E-Print Network [OSTI]

    Yang, Jianke

    2094 OPTICS LETTERS / Vol. 28, No. 21 / November 1, 2003 Fundamental and vortex solitons in a two-dimensional optical lattice Jianke Yang Department of Mathematics and Statistics, University of Vermont, Burlington-dimensional optically induced waveguide array are reported. In the strong localization regime the fundamental soliton

  6. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 1 Effect of signal contamination in matched-filter

    E-Print Network [OSTI]

    Theiler, James

    IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 1 Effect of signal contamination in matched of including some of the target signal in the background scene. Although the covariance is contaminated observe an order of magnitude loss in SCR for a matched filter based on the contaminated covariance. Index

  7. LETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration

    E-Print Network [OSTI]

    Orchard, Jeffery J.

    and long-range inhibition connectivity can spontaneously gen- erate grid-cell-like activity patterns of Technology doi:10.1162/NECO_a_00701 #12;Oscillator-Based Path Integration Without Theta 549 and long-rangeLETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration Do

  8. LETTER Communicated by Christof Koch Ion Channel Stochasticity May Be Critical in Determining

    E-Print Network [OSTI]

    LETTER Communicated by Christof Koch Ion Channel Stochasticity May Be Critical in Determining is encoded almost exclusively by the spike rate. On the other hand, correlated presynaptic activity produces initiation in the squid giant axon (Hodgkin & Huxley, 1952), re- search into the electrical activity

  9. baltimoresun.com Columbia mother solicits letters of support for son who

    E-Print Network [OSTI]

    Fernandez, Eduardo

    that he matters and that life after middle school does get better. Soon, the envelopes and packages with his Howard County school and the parents of his bullies to intervene. But it wasn't until that night's favorite team; gift cards; and origami creations. There was a letter from one of Noah's favorite elementary

  10. February 15, 2002 / Vol. 27, No. 4 / OPTICS LETTERS 231 Effective equations for photonic-crystal

    E-Print Network [OSTI]

    and perfect photonic crys- tals.10 Recently, this type of photonic crystal with a 90± -bent waveguideFebruary 15, 2002 / Vol. 27, No. 4 / OPTICS LETTERS 231 Effective equations for photonic-crystal and circuits in photonic crystals, based on effective discrete equations that include long-range interaction

  11. LETTER TO THE EDITOR Regarding ``Meta-analysis and Causal Inference: A Case Study of Benzene

    E-Print Network [OSTI]

    California at Berkeley, University of

    LETTER TO THE EDITOR Regarding ``Meta-analysis and Causal Inference: A Case Study of Benzene of a causal association between non-Hodgkin lymphoma (NHL) and benzene and between NHL and petroleum refinery identified provide ``further evidence that benzene exposure causes NHL.'' However, his review of each

  12. The Fusion Hybrid as a Response to William Parkins' Letter to Science Magazine Wallace Manheimer

    E-Print Network [OSTI]

    would cost $15 billion. He then estimated a power cost, from capital cost alone, of 36 cents per, March 2006) has recently been brought to my attention. In that letter, he gave estimates of the cost of a fusion reactor based on very simple considerations. These considerations included the size and cost

  13. LETTER doi:10.1038/nature13275 Uplift and seismicity driven by groundwater

    E-Print Network [OSTI]

    Blewitt, Geoffrey

    LETTER doi:10.1038/nature13275 Uplift and seismicity driven by groundwater depletion in central of rock uplift of up to 1­3 mm per year surrounds the southern San Joaquin Valley andpeaksduringthedrylatesummerandautumn,outofphasewith uplift of the valley floor during wetter months. Our results suggest that long

  14. LOR -Letter of Recommendation The Graduate School, University of South Carolina

    E-Print Network [OSTI]

    Almor, Amit

    LOR - Letter of Recommendation 1 The Graduate School, University of South Carolina 901 Sumter at the University of South Carolina has access to his or her educational records. We comply with this law, while enrollment at the University of South Carolina. The alternative you choose in no way affects our

  15. LETTER Communicated by Emilio Salinas Assessing Neuronal Coherence with Single-Unit, Multi-Unit,

    E-Print Network [OSTI]

    Gielen, C.C.A.M.

    LETTER Communicated by Emilio Salinas Assessing Neuronal Coherence with Single-Unit, Multi-Unit the correlated input and multi-unit activity increases proportionally with the square root of the number of neurons in the multi-unit recording. The coherence between two typical multi-unit recordings (2 to 10

  16. 1407 Letters to the Editor 1407 merged sea lion uses intensity cues to localize under-

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    1407 Letters to the Editor 1407 merged sea lion uses intensity cues to localize under- water sound Pinnipeds,"in Studies of Captive Wild Animals. edited by H. Markowitz and V. Stevens(Nelson-Hail, Chicago. J. McGillandJ.P. Goldberg,"Pure-toneintensitydis- orimination and energy detection," J. Aeoust. SCc

  17. Letter to the Editor The precautionary principle and wind-farm planning: Data

    E-Print Network [OSTI]

    Donázar, José A.

    Letter to the Editor The precautionary principle and wind-farm planning: Data scarcity does the value of our work as the first large-scale assessment of wind farms on the population viability of an endan- gered species. However, these authors argue that (1) wind-farms in Andalusia (SE Spain) have been

  18. Letter to the editor The bio-fuel debate and fossil energy use in palm oil

    E-Print Network [OSTI]

    Letter to the editor The bio-fuel debate and fossil energy use in palm oil production: a critique-fuels based on palm oil to re- duce greenhouse gas emissions, due account should be taken of carbon emissions fuel use in palm oil pro- duction, making a number of assumptions that I believe to be incorrect

  19. From the Baltimore Sun Letters to the Editor September 2, 2006

    E-Print Network [OSTI]

    Gruner, Daniel S.

    From the Baltimore Sun Letters to the Editor September 2, 2006 We need better data on stream in Baltimore's Roland Park neighborhood ("Bulldozing a creek in order to help save it," Aug. 18). Some's design while the project was still in the review phase. But to its credit, the city of Baltimore

  20. IEEE COMMUNICATIONS LETTERS, VOL. 10, NO. 5, MAY 2006 353 On the Performance Analysis of

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    IEEE COMMUNICATIONS LETTERS, VOL. 10, NO. 5, MAY 2006 353 On the Performance Analysis of Digital Communications over Generalized-K Fading Channels Petros S. Bithas, Student Member, IEEE, Nikos C. Sagias, Member, IEEE, P. Takis Mathiopoulos, Senior Member, IEEE, George K. Karagiannidis, Senior Member, IEEE

  1. Earth and Planetary Science Letters 420 (2015) 6672 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Clift, Peter

    2015-01-01

    Direct Earth and Planetary Science Letters www.elsevier.com/locate/epsl Climate changes control offshore and numerical forward modeling to show that loading of the offshore basins by increased sediment flux caused flow after the cessation of active extension. This illustrates that offshore basin dynamics

  2. LETTER doi:10.1038/nature11718 Evaporative cooling of the dipolar hydroxyl radical

    E-Print Network [OSTI]

    LETTER doi:10.1038/nature11718 Evaporative cooling of the dipolar hydroxyl radical Benjamin K cooling of neutral hydroxyl (OH. ) molecules loaded from a Stark-decelerated beam into an extremely high challenged it23­25 . Hydroxyl (OH. , referred to here as OH) would not, at first glance, seem

  3. LETTER Volatile communication between plants that affects herbivory: a meta-analysis

    E-Print Network [OSTI]

    Ishida, Yuko

    LETTER Volatile communication between plants that affects herbivory: a meta-analysis Richard Karban,1 * Louie H. Yang,1 and Kyle F. Edwards2 Abstract Volatile communication between plants causing of habitat and plant growth form were undetectable. In most cases, the mechanisms of resistance

  4. Volume 93A, number 4 PHYSICS LETTERS 10 January 1983 POISSON STRUCTURES OF SUPERCONDUCTORS

    E-Print Network [OSTI]

    Holm, Darryl D.

    Volume 93A, number 4 PHYSICS LETTERS 10 January 1983 POISSON STRUCTURES OF SUPERCONDUCTORS Darryl D of these equations to the dissipative case. Introduction. For superconductors, there are two phenomenological superconductor; hybrid microscopic and phenomenological approaches [4] ; and purely phenomenological approaches

  5. LETTER doi:10.1038/nature10749 Origin of Columbia River flood basalt controlled by

    E-Print Network [OSTI]

    Liu, Lijun

    Yellowstone hotspot track along the eastern Snake River plain (Fig. 1). Recent models trying to explainLETTER doi:10.1038/nature10749 Origin of Columbia River flood basalt controlled by propagating rupture of the Farallon slab Lijun Liu1 & Dave R. Stegman1 The origin of the Steens­Columbia River (SCR

  6. Letter from National Institutes of Health to All Contractors To All NIH Contractors

    E-Print Network [OSTI]

    Kroll, Kristen L.

    of the Office of Acquisition and Logistics Management National Institutes of Health #12;Letter from National Institutes of Health to All Contractors To All NIH Contractors: As you for the remainder of the Federal fiscal year. As a partner with you in accomplishing the National Institutes

  7. LETTER doi:10.1038/nature12206 orco mutant mosquitoes lose strong preference for

    E-Print Network [OSTI]

    preference for humans, making them dangerously efficient vectors of malaria and Dengue haemorrhagic fever1LETTER doi:10.1038/nature12206 orco mutant mosquitoes lose strong preference for humans,2 Female mosquitoes of some species are generalists and will blood- feed on a variety of vertebrate hosts

  8. CREDIT:PHOTOS.COM LETTERS I BOOKS I POLICY FORUM I EDUCATION FORUM I PERSPECTIVES

    E-Print Network [OSTI]

    Museo Nacional de Ciencias Naturales

    -constrained peak by2020,thenthatpoliticalfactorsmustbetakenintoaccountinadis- cussion of peak oil production deforestation 985 Diversity matters LETTERS When the Oil Supply Runs Out THE ARTICLE "THE LOOMING OIL CRISIS, and finally concluding that there is so much uncertainty that "predicting the peak may not be worthwhile

  9. Dear Colleague Letter: iTRAK Conversion and ACM$ Payments Date: June 18, 2014

    E-Print Network [OSTI]

    Oviedo, Néstor J.

    NSF-14-83 Dear Colleague Letter: iTRAK Conversion and ACM$ Payments Date: June 18, 2014 National Management Service (ACM$) will be temporarily unavailable beginning September 18th at 8:00 p.m. EDT through October 13, 2014. Awardee organizations will NOT have access to the ACM$ payment process during

  10. in Press, Physical Review Letters Predicting the progress of diffusively limited chemical reactions

    E-Print Network [OSTI]

    Gollub, Jerry P.

    in Press, Physical Review Letters Predicting the progress of diffusively limited chemical reactions: December 9, 2005) The effects of chaotic advection and diffusion on fast chemical reactions in two, fast chemical reactions, numeri- cal studies have attempted to relate product concentra- tion growth

  11. LETTER doi:10.1038/nature13883 Passive radiative cooling below ambient air

    E-Print Network [OSTI]

    Fan, Shanhui

    Coolingisasignificantend-useofenergygloballyandamajordriver of peak electricity demand. Air conditioning, for example possibilities for energy efficiency. Further, the cold darkness of the Universe can be usedLETTER doi:10.1038/nature13883 Passive radiative cooling below ambient air temperature under direct

  12. Letter Report on Testing of Distributed Energy Resource, Microgrid, and End-Use

    E-Print Network [OSTI]

    Letter Report on Testing of Distributed Energy Resource, Microgrid, and End-Use Efficiency of Distributed Energy Resource, Microgrid, and End Use Efficiency Technologies (Task 8) This completes Under Cooperative Agreement No. DE-FC26-06NT42847 Hawai`i Distributed Energy Resource Technologies

  13. LETTER doi:10.1038/nature14364 Topological valley transport at bilayer graphene

    E-Print Network [OSTI]

    Wang, Feng

    semiconductor bandgap can be induced in bilayer graphene using a vertical electrical field, and differentLETTER doi:10.1038/nature14364 Topological valley transport at bilayer graphene domain walls Long in bilayer graphene. A tunable bandgap can be induced in bilayer graphene by an external electric field1

  14. LETTER Colonisation and competition dynamics can explain incomplete sterilisation parasitism in antplant symbioses

    E-Print Network [OSTI]

    Palmer, Todd M.

    LETTER Colonisation and competition dynamics can explain incomplete sterilisation parasitism in ant-mail: ctarnita@princeton.edu Abstract Sterilisation of parasites prevents host reproduction, thereby diverting virulence, yet hosts are often incompletely sterilised. Whereas prior attempts to resolve this paradox have

  15. LETTER doi:10.1038/nature12131 Atmospheric confinement of jet streams on Uranus

    E-Print Network [OSTI]

    LETTER doi:10.1038/nature12131 Atmospheric confinement of jet streams on Uranus and Neptune Yohai-level atmospheric circulation on the outer planets of the Solar System is dominated by strong east­west jet streams suggests that the jets are driven by shallow atmospheric pro- cesses near the surface1­3 , whereas

  16. Medical Physics Letter Digital tomosynthesis of the chest for lung nodule detection: Interim

    E-Print Network [OSTI]

    Medical Physics Letter Digital tomosynthesis of the chest for lung nodule detection: Interim tomosynthesis for improving detectability of small lung nodules. Twenty-one patients under- going computed tomography CT to follow up lung nodules were consented and enrolled to receive an additional digital PA chest

  17. LETTER doi:10.1038/nature13173 Reconstructing lineage hierarchies of the distal lung

    E-Print Network [OSTI]

    Quake, Stephen R.

    LETTER doi:10.1038/nature13173 Reconstructing lineage hierarchies of the distal lung epithelium The mammalian lung is a highly branched network in which the distal regions of the bronchial tree transform-mapping, the mechanisms that control the progression of lung progenitors along distinct lineages into mature alveolar cell

  18. LETTER doi:10.1038/nature11003 The Cancer Cell Line Encyclopedia enables predictive

    E-Print Network [OSTI]

    Kaski, Samuel

    LETTER doi:10.1038/nature11003 The Cancer Cell Line Encyclopedia enables predictive modelling biology and therapeutic possibilities remains challenging. Such efforts should be greatly aided by robust and pharmacological annotation is available1 . Here we describe the Cancer Cell Line Encyclopedia (CCLE

  19. LETTER doi:10.1038/nature12622 Perovskite oxides for visible-light-absorbing

    E-Print Network [OSTI]

    Rappe, Andrew M.

    LETTER doi:10.1038/nature12622 Perovskite oxides for visible-light-absorbing ferroelectric perovskites (with ABO3 composition) is due to the fundamental characteristics of the metal­ oxygen A­O and B cations enable the perovskite oxide to exhibitferroelectricity12 . Owing to a large difference

  20. LETTER TO THE EDITOR ORF-less and reverse-transcriptase-encoding group II

    E-Print Network [OSTI]

    Zimmerly, Steven

    with ORFs, and seven ORF-less group II introns were identified. These ORF-less introns also form two groupsLETTER TO THE EDITOR ORF-less and reverse-transcriptase-encoding group II introns in archaebacteria, with a pattern of homing into related group II intron ORFs LIXIN DAI and STEVEN ZIMMERLY Department of Biological

  1. ACADEMIC TRAINING FOR J-1 STUDENTS -5 SAMPLE ADVISOR'S LETTER FOR ACADEMIC TRAINING

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    ACADEMIC TRAINING FOR J-1 STUDENTS - 5 SAMPLE ADVISOR'S LETTER FOR ACADEMIC TRAINING must Services FROM: Name Title RE: Recommendation for Academic Training for ___________________________ DATE ____________________________ ______________________________________________________. This student has an opportunity to pursue academic training with the employer indicated below. I have discussed

  2. Internet Mathematics Vol. 6, No. 1: 12 Open Letter to the Internet

    E-Print Network [OSTI]

    Bonato, Anthony

    Internet Mathematics Vol. 6, No. 1: 1­2 Open Letter to the Internet Mathematics Community Anthony Bonato and Fan Chung Graham Editors-in-Chief The World Wide Web and Internet have evolved rapidly, and generative network models are just a few of the active research areas surrounding the web and Internet

  3. 1526 OPTICS LETTERS / Vol. 21, No. 19 / October 1, 1996 Phase-shifting point diffraction interferometer

    E-Print Network [OSTI]

    Bokor, Jeffrey

    1526 OPTICS LETTERS / Vol. 21, No. 19 / October 1, 1996 Phase-shifting point diffraction interferometer H. Medecki Center for X-Ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California, Berkeley, Berkeley, California 94720 K. A. Goldberg Center for X-Ray Optics, Lawrence Berkeley National

  4. 832 OPTICS LETTERS / Vol. 25, No. 11 / June 1, 2000 Simultaneous optical wavelength interchange with a

    E-Print Network [OSTI]

    Sheridan, Jennifer

    832 OPTICS LETTERS / Vol. 25, No. 11 / June 1, 2000 Simultaneous optical wavelength interchange January 21, 2000 We present a theoretical analysis for simultaneous optical wavelength interchange and isolation of a pair of collinear input optical signals by use of two concurrent difference

  5. GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, Hygroscopic Properties of Volcanic Ash

    E-Print Network [OSTI]

    Nenes, Athanasios

    GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, Hygroscopic Properties of Volcanic Ash observational data exists on the physical interac- tions between volcanic ash particles and water vapor; yet it is thought that these interactions can strongly impact the microphysical evolution of ash, with implications

  6. 12-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY III, RESEARCH FACULTY III,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    12-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY III, RESEARCH FACULTY III, INSTRUCTIONAL SPECIALIST III OR SENIOR RESEARCH ASSOCIATE APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in://facultyhandbook.fsu.edu). This offer is also contingent upon your providing the necessary documents to prove your identity

  7. 12-MONTH SAMPLE OFFER LETTER TEACHING FACULTY I, RESEARCH FACULTY I,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    12-MONTH SAMPLE OFFER LETTER TEACHING FACULTY I, RESEARCH FACULTY I, INSTRUCTIONAL SPECIALIST I OR ASSOCIATE IN RESEARCH APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in-unit" or "out://facultyhandbook.fsu.edu). This offer is also contingent upon your providing the necessary documents to prove your identity

  8. 9-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY III, RESEARCH FACULTY III,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    9-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY III, RESEARCH FACULTY III, INSTRUCTIONAL SPECIALIST III OR SENIOR RESEARCH ASSOCIATE APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in://facultyhandbook.fsu.edu/). This offer is also contingent upon your providing the necessary documents to prove your identity

  9. 9-MONTH SAMPLE OFFER LETTER TEACHING FACULTY I, RESEARCH FACULTY I,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    9-MONTH SAMPLE OFFER LETTER TEACHING FACULTY I, RESEARCH FACULTY I, INSTRUCTIONAL SPECIALIST I OR ASSISTANT IN RESEARCH APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in-unit" or "out://facultyhandbook.fsu.edu/). This offer is also contingent upon your providing the necessary documents to prove your identity

  10. 9-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY II, RESEARCH FACULTY II,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    9-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY II, RESEARCH FACULTY II, INSTRUCTIONAL SPECIALIST II OR ASSOCIATE IN RESEARCH APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in://facultyhandbook.fsu.edu/). This offer is also contingent upon your providing the necessary documents to prove your identity

  11. RECOMMENDED TEMPLATE FOR GRADUATE ASSISTANT (GA) (POSITIONS COVERED BY THE GEO) OFFER LETTERS

    E-Print Network [OSTI]

    Lee, Tonghun

    RECOMMENDED TEMPLATE FOR GRADUATE ASSISTANT (GA) (POSITIONS COVERED BY THE GEO) OFFER LETTERS to offer you a Graduate Assistantship for [insert period of appointment and service dates, e.g. fall. The current wage for the assistantship we are offering you will be at least $ [insert amount] per month

  12. 12-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY II, RESEARCH FACULTY II,

    E-Print Network [OSTI]

    McQuade, D. Tyler

    12-MONTH SAMPLE MULTI-YEAR OFFER LETTER TEACHING FACULTY II, RESEARCH FACULTY II, INSTRUCTIONAL SPECIALIST II OR ASSOCIATE IN RESEARCH APPOINTMENT Dear Dr. xxx: I am pleased to offer you an ["in://facultyhandbook.fsu.edu). This offer is also contingent upon your providing the necessary documents to prove your identity

  13. Earth and Planetary Science Letters 419 (2015) 154167 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Utrecht, Universiteit

    2015-01-01

    : paleointensity Canary Islands multi-method paleointensity approach Thellier intensity highs Understanding proposed multi-method paleointensity approach to a suite of 19 lavas from the Canary Islands dating betweenDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl High paleointensities for the Canary

  14. Regulatory Guidance Letter 92-02 SUBJECT: Water Dependency and Cranberry

    E-Print Network [OSTI]

    US Army Corps of Engineers

    with the proposed discharge is "water dependent". The Guidelines define water dependency in terms of an activityRegulatory Guidance Letter 92-02 SUBJECT: Water Dependency and Cranberry Production DATE: June 26 MEMORANDUM TO THE FIELD SUBJECT: Water Dependency and Cranberry Production 1. The purpose of this memorandum

  15. Earth and Planetary Science Letters 426 (2015) 280292 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Tsai, Victor C.

    2015-01-01

    has recently been made to predict seismic energy caused by ocean waves in the 4­10 s period rangeDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl Predicting short-period, wind-wave, California Institute of Technology, Pasadena, CA, USA b Division of Geological and Planetary Sciences

  16. Letter to the Editor Molecular profiling of platinum resistant ovarian cancer: Use of the

    E-Print Network [OSTI]

    Letter to the Editor Molecular profiling of platinum resistant ovarian cancer: Use of the model to predict platin resistance in ovarian cancer. The authors studied a training set obtained from 24 tumours. Molecular profiling of platinum resistant ovar- ian cancer. Int J Cancer 2005;118:1963­71. 2. Thigpen T

  17. 136 IEEE POWER ELECTRONICS LETTERS, VOL. 3, NO. 4, DECEMBER 2005 Modeling of Capacitor Impedance

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    as alternatives to traditional, inductor-based switching power converters. Proper design of SC converters requires. Compar- isons to inductor-based switching power converters are made. A number of capacitor technologies136 IEEE POWER ELECTRONICS LETTERS, VOL. 3, NO. 4, DECEMBER 2005 Modeling of Capacitor Impedance

  18. Below are instructions for requesting a letter of recommendation from the Department of Internal Medicine.

    E-Print Network [OSTI]

    Alford, Simon

    of Internal Medicine. All students applying for an Internal Medicine (Preliminary or Categorical) or combined Internal Medicine(IM/EM, Med/Peds)Residency program will need a Dept. of Medicine Letter. Dr. Zar oversees (vmguzman@uic.edu; ph: 312-996-5998) to set-up an appointment. The Medicine department prepares a large

  19. LETTERS TO THE EDITOR RE: ``HOW MANY FOODBORNE OUTBREAKS OF SALMONELLA INFECTION OCCURRED IN

    E-Print Network [OSTI]

    Boehning, Dankmar

    LETTERS TO THE EDITOR RE: ``HOW MANY FOODBORNE OUTBREAKS OF SALMONELLA INFECTION OCCURRED IN FRANCE outbreaks of Salmonella infection that had oc- curred in France during the year 1995. The data provided), the Ministry of Agriculture (MA), and the National Salmonella and Shigella Reference Center (NRC). A complete

  20. Letters to Financial Times, June 13, 2014 Iraq crisis offers Iran its chance . . .

    E-Print Network [OSTI]

    Letters to Financial Times, June 13, 2014 Iraq crisis offers Iran its chance . . . From Prof John Ure . Sir, The big story about the current crisis in Iraq surely is the opportunity it offers Iran-Assad in neighbouring Syria. Iran has already sent the Revolutionary Guard to help the government beat back the Islamic

  1. Letter from the Office of Justice Programs to Program Grantees Dear Office of Justice Programs Grantee

    E-Print Network [OSTI]

    Farritor, Shane

    Letter from the Office of Justice Programs to Program Grantees Dear Office of Justice Programs Grantee: As a result of the Budget Control Act of 2011, the President signed the budget sequestration by about $110 million. We understand these reductions impact all of us, including our grantees

  2. Letters to Analytical Chemistry Metal-Organic Framework Thin Film for Enhanced

    E-Print Network [OSTI]

    Letters to Analytical Chemistry Metal-Organic Framework Thin Film for Enhanced Localized Surface of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 Despite its high refractive to large biological analytes. Sensing of smaller molecules is a compelling target for this technique

  3. Letters to Analytical Chemistry Effects of Constant Voltage on Time Evolution of

    E-Print Network [OSTI]

    Santiago, Juan G.

    Letters to Analytical Chemistry Effects of Constant Voltage on Time Evolution of Propagating, California 94305 We extend the analytical theory of propagating concentra- tion polarization (CP) to describe which has a significant influence on analyte concentrations and electric fields in these devices.10

  4. Europhysics Letters PREPRINT Exploring the lower part of discrete polymer model energy

    E-Print Network [OSTI]

    Stadler, Peter F.

    Europhysics Letters PREPRINT Exploring the lower part of discrete polymer model energy landscapes a generic, problem independent algorithm for exploration of the low- energy portion of the energy landscape of discrete systems and apply it to the energy landscape of lattice proteins. Starting from a set of optimal

  5. LETTER Earth Planets Space, 55, 153157, 2003 Asymmetric behavior of magnetic dip poles

    E-Print Network [OSTI]

    Dormy, Emmanuel

    LETTER Earth Planets Space, 55, 153­157, 2003 Asymmetric behavior of magnetic dip poles M. Mandea (Received November 8, 2002; Revised February 3, 2003; Accepted March 3, 2003) The north magnetic dip pole the dipolar field as a whole, but only the north magnetic pole. We demonstrate how this rapid displacement

  6. June 15, 1996 / Vol. 21, No. 12 / OPTICS LETTERS 857 Photorefractive effects in periodically poled ferroelectrics

    E-Print Network [OSTI]

    Fejer, Martin M.

    June 15, 1996 / Vol. 21, No. 12 / OPTICS LETTERS 857 Photorefractive effects in periodically poled-state photorefractive index perturbations caused by a given optical irradiance distribution in a periodically poled are reduced compared with those in a homogeneously poled crystal by approximately the square of the product

  7. Europhysics Letters PREPRINT Layering transitions for adsorbing polymers in poor sol-

    E-Print Network [OSTI]

    Rechnitzer, Andrew

    Europhysics Letters PREPRINT Layering transitions for adsorbing polymers in poor sol- vents J, Potts, etc.). PACS. 05.70.fh ­ Thermodynamics. PACS. 61.41.+e ­ Polymers, elastomers, and plastics. Abstract. ­ An infinite hierarchy of layering transitions exists for model polymers in solu- tion under

  8. LETTER doi:10.1038/nature12267 Elastic energy storage in the shoulder and the

    E-Print Network [OSTI]

    Udgaonkar, Jayant B.

    #12;LETTER doi:10.1038/nature12267 Elastic energy storage in the shoulder and the evolution of high elastic energy storage and release at the shoulder. These features first appear together approximately 2. Elastic energy storage has been shown to be an important source of poweramplification formanyhigh

  9. Directory

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

    TAMS Subfolders in "TAMS" Go Up 1 Level Go Up 1 Level Up Folder Additional Training Folder CAES Orientation Folder Core Lab Folder Specific Lab Documents in "TAMS...

  10. The readiness of the ATLAS Trigger-DAQ system for the second LHC run

    E-Print Network [OSTI]

    Rammensee, Michael; The ATLAS collaboration

    2015-01-01

    After its first shutdown, the Large Hadron Collider (LHC) will provide proton-proton collisions with increased luminosity and energy. In the ATLAS experiment~\\cite{Atlas}, the Trigger and Data Acquisition (TDAQ) system has been upgraded to deal with the increased event rates~\\cite{TDAQPhase1}. The updated system is radically different from the previous implementation, both in terms of architecture and expected performance. The main architecture has been reshaped in order to profit from the technological progress and to maximize the flexibility and efficiency of the data selection process. Design choices and the strategies employed to minimize the data-collection and the selection latency will be discussed. First results of tests done during the commissioning phase and the operational performance after the first months of data taking will be presented.

  11. Acoustically-induced slip in sheared granular layers: application to dynamic earthquake triggering

    E-Print Network [OSTI]

    Ferdowsi, Behrooz; Guyer, Robert A; Johnson, Paul A; Marone, Chris; Carmeliet, Jan

    2015-01-01

    A fundamental mystery in earthquake physics is "how can an earthquake be triggered by distant seismic sources?" A possible explanation is suggested by results found in discrete element method simulations of a granular layer, during stick-slip, that is subject to transient vibrational excitation. We find that at a critical vibrational amplitude (strain) there is an abrupt transition from negligible time-advanced slip (clock advance) to full clock advance, i.e., transient vibration and earthquake are simultaneous. The critical strain is of order 10^{-6}, similar to observations in the laboratory and in Earth. The transition is related to frictional weakening of the granular layer due to a dramatic increase in the number of slipping contacts and decrease in the coordination number. Associated with this frictional weakening is a pronounced decrease in the elastic moduli of the layer.

  12. Search for Very High Energy Emission from Satellite-triggered GRBs with the Milagro Observatory

    E-Print Network [OSTI]

    Parkinson, P M S; Atkins, R; Benbow, W; Berley, D; Blaufuss, E; Coyne, D G; De Young, T R; Dingus, B L; Dorfan, D E; Ellsworth, R W; Fleysher, L; Gisler, G; González, M M; Goodman, J A; Haines, T J; Hays, E; Hoffman, C M; Kelley, L A; Lansdell, C P; Linnemann, J T; McEnery, J E; Miller, R S; Mincer, A I; Morales, M F; Némethy, P; Noyes, D; Ryan, J M; Samuelson, F W; Saz-Parkinson, P M; Shoup, A; Sinnis, G; Smith, A J; Sullivan, G W; Williams, D A; Wilson, M E; Xu, X W; Yodh, G B

    2005-01-01

    The Milagro gamma-ray observatory employs a water Cherenkov detector to observe extensive air showers produced by high energy particles interacting in the Earth's atmosphere. Milagro has a wide field of view (2 sr) and high duty cycle (> 90%) making it an ideal all-sky monitor of the northern hemisphere in the 100 GeV to 100 TeV energy range. More than 45 satellite-triggered gamma-ray bursts (GRBs) have occurred in the field of view of Milagro since January 2000, with the rate of bursts increasing significantly with the launch of Swift. We discuss the most recent results of a search for very high energy (VHE) emission from these GRBs.

  13. Promiscuous Substrate Recognition in Folding and Assembly Activities of the Trigger Factor Chaperone

    SciTech Connect (OSTI)

    Martinez-Hackert, E.; Hendrickson, W

    2009-01-01

    Trigger factor (TF) is a molecular chaperone that binds to bacterial ribosomes where it contacts emerging nascent chains, but TF is also abundant free in the cytosol where its activity is less well characterized. In vitro studies show that TF promotes protein refolding. We find here that ribosome-free TF stably associates with and rescues from misfolding a large repertoire of full-length proteins. We identify over 170 members of this cytosolic Escherichia coli TF substrate proteome, including ribosomal protein S7. We analyzed the biochemical properties of a TF:S7 complex from Thermotoga maritima and determined its crystal structure. Thereby, we obtained an atomic-level picture of a promiscuous chaperone in complex with a physiological substrate protein. The structure of the complex reveals the molecular basis of substrate recognition by TF, indicates how TF could accelerate protein folding, and suggests a role for TF in the biogenesis of protein complexes.

  14. L1 track triggers for ATLAS in the HL-LHC

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

    Lipeles, E.

    2012-01-01

    The HL-LHC, the planned high luminosity upgrade for the LHC, will increase the collision rate in the ATLAS detector approximately a factor of 5 beyond the luminosity for which the detectors were designed, while also increasing the number of pile-up collisions in each event by a similar factor. This means that the level-1 trigger must achieve a higher rejection factor in a more difficult environment. This presentation discusses the challenges that arise in this environment and strategies being considered by ATLAS to include information from the tracking systems in the level-1 decision. The main challenges involve reducing the data volumemore »exported from the tracking system for which two options are under consideration: a region of interest based system and an intelligent sensor method which filters on hits likely to come from higher transverse momentum tracks.« less

  15. To sample or not to sample: Self-triggered control for nonlinear systems

    E-Print Network [OSTI]

    Anta, Adolfo

    2008-01-01

    Feedback control laws have been traditionally implemented in a periodic fashion on digital hardware. Although periodicity simplifies the analysis of the mismatch between the control design and its digital implementation, it also leads to conservative usage of resources such as CPU utilization in the case of embedded control. We present a novel technique that abandons the periodicity assumption by using the current state of the plant to decide the next time instant in which the state should be measured, the control law computed, and the actuators updated. This technique, termed self-triggered control, is developed for two classes of nonlinear control systems, namely, state-dependent homogeneous systems and polynomial systems. The wide applicability of the proposed results is illustrated in two well known physical examples: a jet engine compressor and the rigid body.

  16. Jittering-jets explosion triggered by the standing accretion shock instability

    E-Print Network [OSTI]

    Papish, Oded; Soker, Noam

    2015-01-01

    We show that the standing accretion shock instability (SASI) that has been used to ease the shock revival in core collapse supernovae (CCSNe) neutrino-driven explosion models, might play a much more decisive role in supplying the stochastic angular momentum required to trigger an explosion with jittering jets. To play a minor role in neutrino-based explosion models, the kinetic energy of the gas inside the stalled shock associated with the transverse (non-radial) motion should be about more than ten percent of the energy of the accreted gas. We find that this implies a stochastic angular momentum that can reach about five percent of the Keplerian specific angular momentum around the newly born neutron star. Such an accretion flow leaves an open conical region along the poles with an average opening angle of about 5 degrees. The outflow from the open polar region powers an explosion according to the jittering-jets model.

  17. Outlook for detection of GW inspirals by GRB-triggered searches in the Advanced detector era

    E-Print Network [OSTI]

    Alexander Dietz; Nickolas Fotopoulos; Leo Singer; Curt Cutler

    2013-04-25

    Short, hard gamma-ray bursts (GRBs) are believed to originate from the coalescence of two neutron stars (NSs) or a NS and a black hole (BH). If this scenario is correct, then short GRBs will be accompanied by the emission of strong gravitational waves (GWs), detectable by GW observatories such as LIGO, Virgo, KAGRA, and LIGO-India. As compared with blind, all-sky, all-time GW searches, externally triggered searches for GW counterparts to short GRBs have the advantages of both significantly reduced detection threshold due to known time and sky location and enhanced GW amplitude because of face-on orientation. Based on the distribution of signal-to-noise ratios in candidate compact binary coalescence events in the most recent joint LIGO-Virgo data, our analytic estimates, and our Monte Carlo simulations, we find an effective sensitive volume for GRB-triggered searches that is about 2 times greater than for an all-sky, all-time search. For NS-NS systems, a jet angle of 20 degrees, a gamma-ray satellite field of view of 10% of the sky, and priors with generally precessing spin, this doubles the number of NS-NS short-GRB and NS-BH short-GRB associations, to ~3-4% of all detections of NS-NSs and NS-BHs. We also investigate the power of tests for statistical excesses in lists of subthreshold events, and show that these are unlikely to reveal a subthreshold population until finding GW associations to short GRBs is already routine. Finally, we provide useful formulas for calculating the prior distribution of GW amplitudes from a compact binary coalescence, for a given GW detector network and given sky location.

  18. Capturing the electromagnetic counterparts of binary neutron star mergers through low latency gravitational wave triggers

    E-Print Network [OSTI]

    Q. Chu; E. J. Howell; A. Rowlinson; H. Gao; B. Zhang; S. J. Tingay; M. Boer; L. Wen

    2015-09-26

    We investigate the prospects for joint low-latency gravitational wave (GW) detection and prompt electromagnetic (EM) follow-up observations of coalescing binary neutron stars (BNSs). Assuming BNS mergers are associated with short duration gamma ray bursts (SGRBs), we evaluate if rapid EM follow-ups can capture the prompt emission, early engine activity or reveal any potential by-products such as magnetars or fast radio bursts. To examine the expected performance of low-latency search pipelines we simulate a population of coalescing BNSs using realistic distributions of source parameters to estimate the detectability and localisation efficiency at different times before merger. To determine what EM observations can be achieved, we consider a selection of facilities with GW follow-up agreements in place, from low-frequency radio to high energy $\\gamma$-ray; we assess the performance of each using observational SGRB flux data corrected to the range of the advanced GW interferometric detectors LIGO and Virgo. We show that while challenging, breakthrough multimessenger science is possible to achieve with a range of follow-up facilities using low latency pipelines. To catch the prompt stage ($<$ 5s) of SGRBs under this scenario, it is challenging even for instruments with a large field-of-view; we suggest this provides motivation to speed up the follow-up pipelines of both the GW observatories and EM facilities. We further show that adding an Australian instrument to an expanded detector network including LIGO-India and Japanese KAGRA, will improve the angular resolution by a factor of 2. Using this network with an almost instantaneous GW triggering latency, we show that if wide field-of-view X-ray instruments such as the proposed ISS-Lobster can employ fast triggering mechanisms, one could obtain almost complete temporal and multiwavelength coverage of the prompt and early activity of SGRBs.

  19. A chain of winking (oscillating) filaments triggered by an invisible extreme-ultraviolet wave

    SciTech Connect (OSTI)

    Shen, Yuandeng; Tian, Zhanjun; Zhao, Ruijuan; Ichimoto, Kiyoshi; Ishii, Takako T.; Shibata, Kazunari

    2014-05-10

    Winking (oscillating) filaments have been observed for many years. However, observations of successive winking filaments in one event have not yet been reported. In this paper, we present the observations of a chain of winking filaments and a subsequent jet that are observed right after the X2.1 flare in AR11283. The event also produced an extreme-ultraviolet (EUV) wave that has two components: an upward dome-like wave (850 km s{sup –1}) and a lateral surface wave (554 km s{sup –1}) that was very weak (or invisible) in imaging observations. By analyzing the temporal and spatial relationships between the oscillating filaments and the EUV waves, we propose that all the winking filaments and the jet were triggered by the weak (or invisible) lateral surface EUV wave. The oscillation of the filaments last for two or three cycles, and their periods, Doppler velocity amplitudes, and damping times are 11-22 minutes, 6-14 km s{sup –1}, and 25-60 minutes, respectively. We further estimate the radial component magnetic field and the maximum kinetic energy of the filaments, and they are 5-10 G and ?10{sup 19} J, respectively. The estimated maximum kinetic energy is comparable to the minimum energy of ordinary EUV waves, suggesting that EUV waves can efficiently launch filament oscillations on their path. Based on our analysis results, we conclude that the EUV wave is a good agent for triggering and connecting successive but separated solar activities in the solar atmosphere, and it is also important for producing solar sympathetic eruptions.

  20. Fast Ion Stabilization of the Ion Temperature Gradient Driven Modes in the Joint European Torus Hybrid-Scenario Plasmas: A Trigger Mechanism for Internal Transport Barrier Formation

    E-Print Network [OSTI]

    Fast Ion Stabilization of the Ion Temperature Gradient Driven Modes in the Joint European Torus Hybrid-Scenario Plasmas: A Trigger Mechanism for Internal Transport Barrier Formation