National Library of Energy BETA

Sample records for loc time ser

  1. Electrochemical Control of the Time-Dependent Intensity Fluctuations in Surface-Enhanced Raman Scattering (SERS)

    E-Print Network [OSTI]

    Brolo, Alexandre G.

    in surface-enhanced Raman scattering (SERS) intensities were recorded from a roughened silver electrode the applied potential. The potential-controlled distribution of SERS intensities was interpreted by considering the modulation of the surface coverage of the adsorbed dye by the interfacial electric field

  2. PBF LOCA test LOC-6 fuel-behavior report. [PWR

    SciTech Connect (OSTI)

    Broughton, T.M.; Vinjamuri, K.; Hagrman, D.L.; Golden, D.W.; MacDonald, P.E.

    1983-04-01

    This report presents the results of Loss-of-Coolant (LOC) Test LOC-6, conducted in the Power Burst Facility at the Idaho National Engineering Laboratory by EG and G Idaho, Inc., for the US Nuclear Regulatory Commission. Postirradiation examination results are included, together with the results of thermal-hydraulic and fuel behavior calculations using the RELAP4 and FRAP-T6/BALON-2 computer codes. Two of the four light water reactor type fuel rods ballooned and ruptured during the test. Peak cladding temperatures at the rupture locations were high in the alpha phase (1066 and 1098/sup 0/K). The effects of initial rod internal prepressurization and prior irradiation were investigated during the experiment. The effect of rod prepressurization was found to be significant, and, for burnups of about 17,000 MWd/t, prior irradiation increased cladding circumferential strains at failure.

  3. 3.2 "Lab-on-a-Chip" A Lab-on-a-Chip (LOC) device, also known as a micro-total-analytical system

    E-Print Network [OSTI]

    perspective, LOCs can be viewed as a subset of microelectromechanical systems (MEMS) and combine miniaturized

  4. Fuel-rod response during the large-break LOCA Test LOC-6. [PWR

    SciTech Connect (OSTI)

    Vinjamuri, K.; Cook, B.A.; Hobbins, R.R.

    1981-01-01

    The large break Loss of Coolant Accident (LOCA) Test LOC-6 was conducted in the Power Burst Facility (PBF) at the Idaho National Engineering Laboratory by EG and G Idaho, Inc. The objectives of the PBF LOCA tests are to obtain in-pile cladding ballooning data under blowdown and reflood conditions and assess how well out-of-pile ballooning data represent in-pile fuel rod behavior. The primary objective of the LOC-6 test was to determine the effects of internal rod pressures and prior irradiation on the deformation behavior of fuel rods that reached cladding temperatures high in the alpha phase of zircaloy. Test LOC-6 was conducted with four rods of PWR 15 x 15 design with the exception of fuel stack length (89 cm) and enrichment (12.5 W% /sup 235/U). Each rod was surrounded by an individual flow shroud.

  5. Demo Abstract: QiLoc--A Qi-Wireless Based Platform for Robust User-Initiated Indoor Location Services

    E-Print Network [OSTI]

    wireless charging protocol, a QiLoc Station is able to extract the unique IDs from phones placedLoc, we explore the use of the Qi wireless charg- ing protocol [2] for precise desk-level indoor location and identification. Qi is a widely adopted wireless charging stan- dard, which is based on electromagnetic induction

  6. www.rsc.org/loc Volume 9 | Number 21 | 7 November 2009 | Pages 30253164 ISSN 1473-0197

    E-Print Network [OSTI]

    Breedveld, Victor

    as an inexpensive, biodegradable, renewable, flexible polymer substrate. Innovative concepts of paper-based devices include transistors,1,2 batteries,3,4 super-capacitors,4 MEMS devices,5 sensors6 and lab-on-a-chip (LOC

  7. TO FIT INTO www.rsc.org/loc

    E-Print Network [OSTI]

    Wu, Shin-Tson

    , which in turn exerts a pressure to displace a small volume of fluid on the opposite side of the chamber fabrication, compact size, high precision, low power consumption, and relatively fast response time or oil) is smaller than e//, then the LC molecules will be pulled outward. Due to the cohesive force

  8. Freiburg RNA Tools: a web server integrating IntaRNA, ExpaRNA and LocARNA

    E-Print Network [OSTI]

    Smith, Cameron

    The Freiburg RNA tools web server integrates three tools for the advanced analysis of RNA in a common web-based user interface. The tools IntaRNA, ExpaRNA and LocARNA support the prediction of RNA–RNA interaction, exact ...

  9. TECHNICAL NOTE www.rsc.org/loc | Lab on a Chip Neutravidin micropatterning by deep UV irradiation

    E-Print Network [OSTI]

    Hancock, William O.

    TECHNICAL NOTE www.rsc.org/loc | Lab on a Chip Neutravidin micropatterning by deep UV irradiation by exposure to deep UV irradiation. Neutravidin is physically absorbed onto the glass or quartz substrate straightforward and reproducible. The use of ultraviolet (UV) irradiation for patterning proteins offers several

  10. PAPER www.rsc.org/loc | Lab on a Chip Perforated membrane method for fabricating three-dimensional

    E-Print Network [OSTI]

    Zare, Richard N.

    PAPER www.rsc.org/loc | Lab on a Chip Perforated membrane method for fabricating three. Thin (~50 mm) perforated PDMS membranes are bonded to thicker (0.1 cm or more) PDMS slabs by means and three perforated membranes are demonstrated. We also present 3D PDMS microfluidic devices for display

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Krug, Patrick J.

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 312: 149­159, 2006 Published April 24 therefore have limited time to locate and colonize a suitable adult habitat. Domi- nant spatial competitors consent of the publisher #12;Mar Ecol Prog Ser 312: 149­159, 2006 energy reserves, they became `desperate

  12. PAPER www.rsc.org/loc | Lab on a Chip High-sensitivity, disposable lab-on-a-chip with thin-film organic electronics

    E-Print Network [OSTI]

    Klotzkin, David

    -on-a-chip with a thin-film organic light-emitting diode (OLED) excitation source and an organic photodiode (OPD a fluorescent dye emission spectrum. The excitation light from the OLED was linearly polarized and used candidate for disposable LOC applications. Broadband OLED light sources can excite many different dyes

  13. Evaluation of the thermal-hydraulic response and fuel rod thermal and mechanical deformation behavior during the power burst facility test LOC-3. [PWR

    SciTech Connect (OSTI)

    Yackle, T.R.; MacDonald, P.E.; Broughton, J.M.

    1980-01-01

    An evaluation of the results from the LOC-3 nuclear blowdown test conducted in the Power Burst Facility is presented. The test objective was to examine fuel and cladding behavior during a postulated cold leg break accident in a pressurized water reactor (PWR). Separate effects of rod internal pressure and the degree of irradiation were investigated in the four-rod test. Extensive cladding deformation (ballooning) and failure occurred during blowdown. The deformation of the low and high pressure rods was similar; however, the previously irradiated test rod deformed to a greater extent than a similar fresh rod exposed to identical system conditions.

  14. The GBT-SerDes ASIC prototype

    E-Print Network [OSTI]

    Moreira, P; Marchioro, A; Paillard, C; Li, J; Bonacini, S; Faccio, F; Porret, D; Baron, S; Gui, P; Francisco, R; Cobanoglu, O; Feger, S

    2010-01-01

    In the framework of the GigaBit Transceiver project (GBT), a prototype, the GBTSerDes ASIC, was developed, fabricated and tested. To sustain high radiation doses while operating at 4.8Gb/s, the ASIC was fabricated in a commercial 130 nm CMOS technology employing radiation tolerant techniques and circuits. The transceiver serializes-deserializes the data, Reed-Solomon encodes and decodes the data and scrambles and descrambles the data for transmission over optical fibre links. This paper describes the GBT-SerDes architecture, and presents the test results.

  15. Nanoimprint Lithography of Al Nanovoids for Deep-UV SERS

    E-Print Network [OSTI]

    Ding, Tao; Sigle, Daniel O.; Herrmann, Lars O.; Wolverson, Daniel; Baumberg, Jeremy

    2014-10-07

    , and simulate biochemical sensor conditions. The Raman signal was collected by a Raman system with an excitation laser at 244 nm and a laser power of 0.3 mW on the sample, with total integration time of 30 s (Renishaw). The UV laser spot diameter was 5 µm... , J., Evaluation of Colloids and Activation Agents for Determination of Melamine Using UV-SERS. J. Phys. Chem. C 2012, 116, 6083-6091. (13) Cui, L.; Wang, A.; Wu, D.-Y.; Ren, B.; Tian, Z.-Q., Shaping and Shelling Pt and Pd Nanoparticles...

  16. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    written consent of the publisher #12;Mar Ecol Prog Ser 280: 261­273, 2004 cific mesoscale oceanographic

  17. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Lewison, Rebecca

    Ser 450: 181­194, 2012 nest on several individual islands in the Caribbean (e.g. Meylan 1999, Beggs et

  18. Surface-Enhanced Raman Scattering (SERS) for Detection in Immunoassays: applications, fundamentals, and optimization

    SciTech Connect (OSTI)

    Jeremy Daniel Driskell

    2006-08-09

    Immunoassays have been utilized for the detection of biological analytes for several decades. Many formats and detection strategies have been explored, each having unique advantages and disadvantages. More recently, surface-enhanced Raman scattering (SERS) has been introduced as a readout method for immunoassays, and has shown great potential to meet many key analytical figures of merit. This technology is in its infancy and this dissertation explores the diversity of this method as well as the mechanism responsible for surface enhancement. Approaches to reduce assay times are also investigated. Implementing the knowledge gained from these studies will lead to a more sensitive immunoassay requiring less time than its predecessors. This dissertation is organized into six sections. The first section includes a literature review of the previous work that led to this dissertation. A general overview of the different approaches to immunoassays is given, outlining the strengths and weaknesses of each. Included is a detailed review of binding kinetics, which is central for decreasing assay times. Next, the theoretical underpinnings of SERS is reviewed at its current level of understanding. Past work has argued that surface plasmon resonance (SPR) of the enhancing substrate influences the SERS signal; therefore, the SPR of the extrinsic Raman labels (ERLs) utilized in our SERS-based immunoassay is discussed. Four original research chapters follow the Introduction, each presented as separate manuscripts. Chapter 2 modifies a SERS-based immunoassay previously developed in our group, extending it to the low-level detection of viral pathogens and demonstrating its versatility in terms of analyte type, Chapter 3 investigates the influence of ERL size, material composition, and separation distance between the ERLs and capture substrate on the SERS signal. This chapter links SPR with SERS enhancement factors and is consistent with many of the results from theoretical treatments of SPR and SERS. Chapter 4 introduces a novel method of reducing sample incubation time via capture substrate rotation. Moreover, this work led to a method of virus quantification without the use of standards. Chapter 5 extends the methodology developed in Chapter 4 to both the antigen and ERL labeling step to perform assays with improved analytical performance in less time than can be accomplished in diffusion controlled assays. This dissertation concludes with a general summary and speculates on the future of this exciting approach to carrying out immunoassays.

  19. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Grutter, Alexandra "Lexa"

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser 1 Published January 11 Parasite removal rates is dependent on the rates at which par- asites are removed by cleaner fish and added through colonization-Research 1996 Resale of full article not permitted #12;Mar Ecol Prog Ser 130:61-70, 1996 of daily consumption

  20. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Denny, Mark

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 522: 127­143, 2015 doi: 10.3354/meps11117 on experimental plates colonized by natural microalgae. Limpet species found higher on the shore had lower peak without written consent of the publisher #12;Mar Ecol Prog Ser 522: 127­143, 2015 In the rocky intertidal

  1. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pawlik, Joseph

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 368: 137­143, 2008 doi: 10.3354/meps07615 and reproduction, thereby also enhancing their ability to colonize open space. As for some plant communities without written consent of the publisher #12;Mar Ecol Prog Ser 368: 137­143, 2008 primary limiting

  2. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Shima, Jeff

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 472: 239­248, 2013 doi: 10.3354/meps10015 in the system via a range of mechanisms, including competition-colonization tradeoffs (Levins & Culver 1971 holder(s). It may be distributed to interested individuals on request. #12;Mar Ecol Prog Ser 472: 239

  3. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Stachowicz, Jay

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 398: 69­80, 2010 doi: 10.3354/meps08341 surfaces for colonization that adequately compensate for the primary substrate it exploits, its high consent of the publisher #12;Mar Ecol Prog Ser 398: 69­80, 2010 Rodriguez 2006, Heiman et al. 2008

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 262: 19­25, 2003 Published November 7 blocked access to ice-free terrain for breeding. The first colonization of Ross Island in East Mc;Mar Ecol Prog Ser 262: 19­25, 2003 guins (Baroni &

  5. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pawlik, Joseph

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 465: 111­117, 2012 doi: 10.3354/meps09904. laevis neither affected the frequency of colonization of Montastraea annularis by boring sponges, nor individuals on request. #12;Mar Ecol Prog Ser 465: 111­117, 2012 tem are altered. These context

  6. Course Information SER 234 Operating Systems and Networking

    E-Print Network [OSTI]

    · · · · · · · · · · · Course Information SER 234 Operating Systems and Networking Catalog Description Fundamentals of operating systems, process management, scheduling, and file management. Network technology, topologies, protocols, application control; network and operating system security. Credit Hours

  7. Course Information SER 221 Programming Languages and Their Execution Environment

    E-Print Network [OSTI]

    · · · · · · · · · Course Information SER 221 Programming Languages and Their Execution Environment Catalog Description Introduces the fundamental programming language concepts of data, type, control, abstraction, and structure; software development and execution environments; programming language paradigms

  8. SERS diagnostic platforms, methods and systems microarrays, biosensors and biochips

    DOE Patents [OSTI]

    Vo-Dinh, Tuan (Knoxville, TN)

    2007-09-11

    A Raman integrated sensor system for the detection of targets including biotargets includes at least one sampling platform, at least one receptor probe disposed on the sampling platform, and an integrated circuit detector system communicably connected to the receptor. The sampling platform is preferably a Raman active surface-enhanced scattering (SERS) platform, wherein the Raman sensor is a SERS sensor. The receptors can include at least one protein receptor and at least one nucleic acid receptor.

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Koehl, Mimi

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 479: 47­62, 2013 doi: 10.3354/meps10193 larvae, which are trans- ported by ambient currents and colonize new sur- faces. The recruitment. 1994, Schiel 2004, Edwards & Stachowicz 2011). To colonize a surface, a larva must be transported

  10. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Love, Milton

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 344: 245­256, 2007 doi: 10.3354/meps06929 findings suggest that trophic pathways on other types of artificial structures colonized by exotic species · Artificial reef Resale or republication not permitted without written consent of the publisher #12;Mar Ecol

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pawlik, Joseph

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 224: 103­114, 2001 Published December 19 process: solitary larvae first colonize a suitable but previously uninhabited sub- stratum; gregarious the conditions under which larvae of a gregarious species colonize new habitats. We first confirmed

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pawlik, Joseph

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 224: 115­131, 2001 Published December 19 substrata. Previous investigations with barnacles and polychaetes have suggested that the colonization for the initiation of monospecific aggregations of fouling marine invertebrates. KEY WORDS: Colonization · Gregarious

  13. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pawlik, Joseph

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Published November 2 Defenses of Caribbean sponges.Pawlik* Biological Sciences and Center for Marine Science Research. University of North Carolina at Wilmington. Analyses of ash content, tensile strength, protein, carbohydrate, and lipid content, and total energy

  14. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 382: 211­219, 2009 doi: 10.3354/meps07997 Published April 30 INTRODUCTION Seabirds play critical roles in the transfer of energy and nutrients within marine ecosystems and also between marine and terrestrial ecosystems. Despite decades of intensive study

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Thomas, David D.

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 311: 273­283, 2006 Published April 13 scales in biodiversity-based research: challenges and solutions for marine systems Shahid Naeem York, New York 10027, USA ABSTRACT: As in terrestrial biodiversity, human influences over marine

  16. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Queensland, University of

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 295: 201­213, 2005 Published June 23 INTRODUCTION Due to the ongoing direct depletion of the world's marine resources as well as the indirect effects of fish- ing, no-take marine reserves are being promoted as an ecosystem-level management tool. No

  17. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Camassa, Roberto

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 487: 185­200, 2013 doi: 10.3354/meps10387 Published July 30 INTRODUCTION Marine snow plays a critical role in the marine car- bon cycle, as a dominant, Kiørboe 2011). Knowledge of the vertical distribution of marine aggregates in the water column, as well

  18. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Morel, François M. M.

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 236: 37­43, 2002 Published July 3 the CO2 responses of marine phytoplankton despite the established importance of these organisms poten- tially limit the growth of large marine diatoms (Riebe- sell et al. 1993), while recent field

  19. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Rolán-Alvarez, Emilio

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 357: 175­184, 2008 doi: 10.3354/meps07278 will affect only some regions of the genome. An additional difficulty in the marine environment variation in the marine environment remains insufficiently understood (Avise 2004). Natural populations

  20. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Queensland, University of

    MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 253: 25­38, 2003 Published May 15 INTRODUCTION Marine protected areas are riding the wave of ocean governance reform (Kelleher 1997, Allison et component for the ecologically sustainable use of marine resources. Where such reform processes are grounded

  1. PATCHY SILICA-COATED SILVER NANOWIRES AS SERS SUBSTRATES

    SciTech Connect (OSTI)

    Murph, S.; Murphy, C.

    2013-03-29

    We report a class of core-shell nanomaterials that can be used as efficient surface-enhancement Raman scattering (SERS) substrates. The core consists of silver nanowires, prepared through a chemical reduction process, that are used to capture 4- mercaptobenzoic acid (4-MBA), a model analyte. The shell was prepared through a modified Stöber method and consists of patchy or full silica coats. The formation of silica coats was monitored via transmission electron microscopy, UV-visible spectroscopy and phase-analysis light scattering for measuring effective surface charge. Surprisingly, the patchy silica coated silver nanowires are better SERS substrate than silver nanowires; nanomolar concentration of 4-MBA can be detected. In addition, “nano-matryoshka” configurations were used to quantitate/explore the effect of the electromagnetic field at the tips of the nanowire (“hot spots”) in the Raman scattering experiment.

  2. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    high-energy physical features on multiple time and space scales. This suggests that climate might community was dominated by small (limitation depending limitation and the taxonomic composition of the phyto- plankton community varied across the shelf, a stepwise

  3. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Collin, Rachel

    . As expected, egg size correlates with hatching size and time to hatching in species without nurse eggs. Egg with direct development with nurse eggs. Hatching size of direct developers with and without nurse eggs do not differ. Developmental characters do not vary with adult body size among species. There are strong

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    .g. to expend energy and/or time) so that some kind of ben- efit can be obtained (e.g. improved ranking or exclu, Swansea SA2 8PP, UK 3 National Marine Park of Zakynthos, 1 El. Venizelou Street, 29100 Zakynthos, Greece 4 · Sequential assessment · Evolutionary stable strategy · Territory · Marine · Vertebrate · Reptile Resale

  5. 2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology

    E-Print Network [OSTI]

    Draper, Jeff

    2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology Rashed Zafar Bhatti EE Denneau IBM T.J. Watson Research Center Yorktown Heights, NY 10598 denneau@us.ibm.com Jeff Draper of jitter. Power consumption of the proposed SerDes design is 30 mW per serial link targeted to IBM Cu-11

  6. The use of Surface Enhanced Raman Spectroscopy (SERS) for biomedical applications 

    E-Print Network [OSTI]

    Chowdhury, Mustafa Habib

    2007-04-25

    hexagonally close packed periodic particle arrays of silver nanoparticles on glass substrates as well as the use of optically tunable gold nanoshell films on glass substrates. The three different types of SERS surfaces are characterized using UV-Vis absorption...

  7. Digital Object Identifier (DOI) 10.1007/s101070000137 Math. Program., Ser. A 88: 6183 (2000)

    E-Print Network [OSTI]

    Monteiro, Renato

    2000-01-01

    Digital Object Identifier (DOI) 10.1007/s101070000137 Math. Program., Ser. A 88: 61­83 (2000.ac.jp This research is supported in part by the Grant-in-Aid for Encouragement of Young Scientists (A) 09780417 (1997) of the Ministry of Education, Science and Culture of Japan. Mathematics Subject Classification (1991): 65K05, 90C

  8. O professor do IST diz ser necessrio repensar o funcionamento das democracias Mal-estar europeu

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    O professor do IST diz ser necessário repensar o funcionamento das democracias Mal-estar europeu financeiros e de que o voto pesa pouco nas orientações seguidas, são sintomas perigosos para a democracia.E democracias", isto é, alargar o perímetro de legitimação democrática além do Estado-nação, criar uma

  9. INVENTORY OF MUNICIPAL STORMWATER DISCHARGES WITHIN THE FIL4SER RIVER ESTUARY

    E-Print Network [OSTI]

    #12;INVENTORY OF MUNICIPAL STORMWATER DISCHARGES WITHIN THE FIL4SER RIVER ESTUARY DOE FRAP 1993 . . . . . . . . . ...".... . . . . . . . . . . . . . . . 2.0 STORMWATER DIWXL4RGES . . . . . . . . . . . . . . . . . . . . 2.1 Site Identification by the Conservation and Protection Department of Environment Canada to conduct an inventory of stormwater discharges

  10. Microscopic Aspects of Stretched Exponential Relaxation (SER) in Homogeneous Molecular and Network Glasses and Polymers

    E-Print Network [OSTI]

    J. C. Phillips

    2010-05-04

    Because the theory of SER is still a work in progress, the phenomenon itself can be said to be the oldest unsolved problem in science, as it started with Kohlrausch in 1847. Many electrical and optical phenomena exhibit SER with probe relaxation I(t) ~ exp[-(t/{\\tau}){\\beta}], with 0 equilibrium scaling exponent; its value, especially in glasses, is both practically useful and theoretically significant. The mathematical complexity of SER is such that rigorous derivations of this peculiar function were not achieved until the 1970's. The focus of much of the 1970's pioneering work was spatial relaxation of electronic charge, but SER is a universal phenomenon, and today atomic and molecular relaxation of glasses and deeply supercooled liquids provide the most reliable data. As the data base grew, the need for a quantitative theory increased; this need was finally met by the diffusion-to-traps topological model, which yields a remarkably simple expression for the shape parameter {\\beta}, given by d*/(d* + 2). At first sight this expression appears to be identical to d/(d + 2), where d is the actual spatial dimensionality, as originally derived. The original model, however, failed to explain much of the data base. Here the theme of earlier reviews, based on the observation that in the presence of short-range forces only d* = d = 3 is the actual spatial dimensionality, while for mixed short- and long-range forces, d* = fd = d/2, is applied to four new spectacular examples, where it turns out that SER is useful not only for purposes of quality control, but also for defining what is meant by a glass in novel contexts. (Please see full abstract in main text)

  11. a ser presentada el dia 3 de mayo de 2010 en la Universidad de la Republica

    E-Print Network [OSTI]

    TESIS a ser presentada el d´ia 3 de mayo de 2010 en la Universidad de la Rep´ublica para obtener el examinadores Dr. Sergio Nesmachnow Director de Tesis Dr. Franco Robledo Director Acad´emico Dr. Jos´e Vieitez radiosidad utilizando matrices de rango bajo Resumen Esta tesis estudia la resoluci´on del problema de

  12. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 191196 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    Rao, Hui

    2006-01-01

    . Paris, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved by Elsevier SAS. All rights reserved. doi:10.1016/j.crma.2005.12.016 #12;192 H. Rao et al. / C. R. Acad. Sci

  13. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 285288 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    Zhang, Sheng

    2006-01-01

    . Sci. Paris, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights. Acad. Sci. Paris, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights. Published by Elsevier SAS. All rights reserved. doi:10.1016/j.crma.2005.10.004 #12;286 S. Zhang / C. R. Acad

  14. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 333336 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    2006-01-01

    , France Reçu le 2 novembre 2005 ; accepté le 19 décembre 2005 Disponible sur Internet le 18 janvier 2006, Ser. I 342 (2006). 2006 Académie des sciences. Publié par Elsevier SAS. Tous droits réservés. Sci. Paris, Ser. I 342 (2006). 2006 Académie des sciences. Publié par Elsevier SAS. Tous droits

  15. Entre el ser y el parecer: La dualidad de los personajes dramáticos en Saverio el cruel

    E-Print Network [OSTI]

    Sanhueza, Ma. Teresa

    2001-10-01

    construyendo mediante datos que provienen de tres fuentes: sus palabras, sus acciones y lo que los demás personajes dicen de él. Al final de la obra la etiqueta semántica del personaje se completa en varios niveles y aspectos: el personaje considerado en sí... mismo, en su figura física, en su modo de ser y de estar, en sus relaciones familiares o profesionales con los demás y en su participación en el conjunto del cuadro agenciai. La construcción de los personajes se estructura tradicionalmente en base a...

  16. Digital Object Identifier (DOI) 10.1007/s10107-003-0424-4 Math. Program., Ser. B 97: 471493 (2003)

    E-Print Network [OSTI]

    Tsuchiya, Takashi

    2003-01-01

    Digital Object Identifier (DOI) 10.1007/s10107-003-0424-4 Math. Program., Ser. B 97: 471­493 (2003 was supported in part by the Grant-in-Aid for Scientific Research (C) 11680463 of the Ministry of Education, Culture, Sports, Science and Technology of Japan. Mathematics Subject Classification (1991): 90C51, 90C48

  17. El Nombre del Papelillo Poda ser coincidencia? Cuntas tocayas de nombre y dos apellidos podra tener en una ciudad as?

    E-Print Network [OSTI]

    Johnson, Samuel

    - intervino Raúl - es lo menos que podemos hacer. - Y así me cuentas cosas de cuando mi novio era chiquitín fuera al cubo, porque eran tres palabras... No, tenía que ser ella. ¿Pero por qué esta tal Carlota, se viejo diario ese, ¿te acuerdas? Tenía unas cuantas cosas de cuando estaba enamorado de ti y eso. Pensé

  18. Ser. A Mathematics 2004 Vol.47 Supp. 53--68 53 Teracluster LSSC-II----Its designing principles and

    E-Print Network [OSTI]

    Gong, Xingao

    and Engineering Computing, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080 applications in some large- scale numerical simulations. Keywords: high performance computing, PC cluster ¢¡¤£¦¥¨§©¡¥£§£§© Ser. A Mathematics 2004 Vol.47 Supp. 53--68 53 Teracluster LSSC

  19. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 103108 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    Coron, Jean-Michel

    2006-01-01

    ). 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved. Résumé Sur la. Acad. Sci. Paris, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights Académie des sciences. Published by Elsevier SAS. All rights reserved. doi:10.1016/j.crma.2005.11.004 #12

  20. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 16 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    Rouvière, François

    2006-01-01

    . Acad. Sci. Paris, Ser. I 342 (2006). 2005 Académie des sciences. Publié par Elsevier SAS. Tous droits). 1631-073X/$ ­ see front matter 2005 Académie des sciences. Publié par Elsevier SAS. Tous droits, université de Nice, parc Valrose, 06108 Nice cedex 2, France Reçu le 9 juin 2005 ; accepté le 25 octobre 2005

  1. C. R. Acad. Sci. Paris, Ser. I 342 (2006) 2328 http://france.elsevier.com/direct/CRASS1/

    E-Print Network [OSTI]

    Porretta, Alessio

    2006-01-01

    . Paris, Ser. I 342 (2006). 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved sciences. Published by Elsevier SAS. All rights reserved. doi:10.1016/j.crma.2005.09.027 #12;24 N. Grenon, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy Received 31 August 2005

  2. Ann. Soc. Math. Polon. Ser. I Comment. Math. Prace Mat. 20 (1978), 279281 ON BANACH ALGEBRAS WHICH ARE HILBERT SPACES

    E-Print Network [OSTI]

    Chojnacki, Wojtek

    1978-01-01

    Ann. Soc. Math. Polon. Ser. I Comment. Math. Prace Mat. 20 (1978), 279­281 ON BANACH ALGEBRAS WHICH or the complex field C. Let H denote the real quaternion algebra. An algebra A over F with identity e is called a Hilbert algebra with identity if A is a Hilbert space such that the norm derived from an inner product has

  3. a ser presentada el da 11 de Febrero de 2011, en la Universidad de La Repblica, UdelaR

    E-Print Network [OSTI]

    TESIS a ser presentada el día 11 de Febrero de 2011, en la Universidad de La República, UdelaR para Título de la tesis : Optimización de una Red de Datos IP/MPLS sobre SDH/DWDM usando Tabú Search. Caso de comité de examinadores Dr. Ing. Franco ROBLEDO Director de Tesis Dr. Gerardo RUBINO Co-Director de Tesis

  4. www.rsc.org/loc ISSN 1473-0197

    E-Print Network [OSTI]

    Daraio, Chiara

    primary T cells. Spatiotemporally deterministic retrieval of T cell subsets in relation to their migration the capabilities of traditional cell culture and migration assays, and characterized migration of primary human CD4 and gene expression analysis of migrating human T cells Volume 15 Number 5 7 March 2015 Pages 1217­1396 #12

  5. [4] H. Okamura and P. D. Seymour. Multicommodity Flow in Planar Graphs. In J. Combin. Theory Ser. B, 31:75--81, 1981.

    E-Print Network [OSTI]

    Khanna, Sanjeev

    [4] H. Okamura and P. D. Seymour. Multicommodity Flow in Planar Graphs. In J. Combin. Theory Ser. B Management, 1990. [6] A. Schrijver, P. Seymour and P. Winkler. The Ring Loading Problem. In SIAM J. Discrete

  6. Fano-resonance boosted cascaded field enhancement in a plasmonic nanoparticle-in-cavity nanoantenna array and its SERS application

    E-Print Network [OSTI]

    Zhu, Zhendong; You, Oubo; Li, Qunqing; Fan, Shoushan

    2015-01-01

    Cascaded optical field enhancement (CFE) can be realized in some specially designed multiscale plasmonic nanostructures, where the generation of extremely strong field at nanoscale volume is crucial for many applications, for example, surface enhanced Raman spectroscopy (SERS). Here, we propose a strategy of realizing a high-quality plasmonic nanoparticle-in-cavity (PIC) nanoantenna array, where strong coupling between a nanoparticle dark mode with a high order nanocavity bright mode can produce Fano resonance at a target wavelength. The Fano resonance can effectively boost the CFE in the PIC, with a field enhancement factor up to 5X10^2. A cost-effective and reliable nanofabrication method is developed with room temperature nanoimprinting lithography to manufacture high-quality PIC arrays. This technique guarantees the generation of only one gold nanoparticle at the bottom of each nanocavity, which is crucial for the generation of the expected CFE. As a demonstration of the performance and application of the...

  7. SYMBOLS FOR TIME = time variable

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    =forever) Cost spent to build variation point i at time i = index over variation points #12;SYMBOLS FOR TIME to account for net present value of money r = assumed interest rate i = index over variation points Cost Expected cost summed over all relevant time intervals Cost spent to build variation point i at time r

  8. Modelling Time

    E-Print Network [OSTI]

    Burra G. Sidharth

    2008-09-03

    We briefly review two concepts of time - the usual time associated with "being" and more recent ideas, answering to the description of "becoming". The approximation involved in the former is examined. Finally we argue that it is (unpredictable) fluctuations that underlie time.

  9. Quantum Time

    E-Print Network [OSTI]

    John Ashmead

    2010-05-05

    Normally we quantize along the space dimensions but treat time classically. But from relativity we expect a high level of symmetry between time and space. What happens if we quantize time using the same rules we use to quantize space? To do this, we generalize the paths in the Feynman path integral to include paths that vary in time as well as in space. We use Morlet wavelet decomposition to ensure convergence and normalization of the path integrals. We derive the Schr\\"odinger equation in four dimensions from the short time limit of the path integral expression. We verify that we recover standard quantum theory in the non-relativistic, semi-classical, and long time limits. Quantum time is an experiment factory: most foundational experiments in quantum mechanics can be modified in a way that makes them tests of quantum time. We look at single and double slits in time, scattering by time-varying electric and magnetic fields, and the Aharonov-Bohm effect in time.

  10. Kodama time

    E-Print Network [OSTI]

    Abreu, Gabriel

    2010-01-01

    In a general time-dependent (3+1)-dimensional spherically symmetric spacetime, the so-called Kodama vector is a naturally defined geometric quantity that is timelike outside the evolving horizon and so defines a preferred class of fiducial observers. However the Kodama vector does not by itself define any preferred notion of time. We demonstrate that a preferred time coordinate - which we shall call Kodama time - can be introduced by taking the additional step of applying the Clebsch decomposition theorem to the Kodama vector. We thus construct a geometrically preferred coordinate system for any time-dependent spherically symmetric spacetime, and explore its properties. In particular we use this formalism to construct a general class of conservation laws, generalizing Kodama's energy flux. We study the geometrically preferred fiducial observers, and demonstrate that it is possible to define and calculate a generalized notion of surface gravity that is valid throughout the entire evolving spacetime. Furthermor...

  11. Quantum time

    E-Print Network [OSTI]

    Giovannetti, Vittorio

    We give a consistent quantum description of time, based on Page and Wootters’s conditional probabilities mechanism, which overcomes the criticisms that were raised against similar previous proposals. In particular we show ...

  12. Chow Time 

    E-Print Network [OSTI]

    Unknown

    2011-09-05

    -1 THE PREDICTION OF BUS ARRIVAL TIME USING AUTOMATIC VEHICLE LOCATION SYSTEMS DATA A Dissertation by RAN HEE JEONG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY December 2004 Major Subject: Civil Engineering THE PREDICTION OF BUS ARRIVAL TIME USING AUTOMATIC VEHICLE LOCATION SYSTEMS DATA A Dissertation by RAN HEE JEONG Submitted to Texas A...

  13. Dispatch R427 Time perception: Brain time or event time?

    E-Print Network [OSTI]

    Johnston, Alan

    Dispatch R427 Time perception: Brain time or event time? Alan Johnston* and Shin'ya Nishida Recent experiments show that synchronous events can appear to an observer to occur at different times. Neural processing time delays are offered as an explanation of these temporal illusions, but equating perceived time

  14. Time Management Managing Time and Tasks

    E-Print Network [OSTI]

    Kunkle, Tom

    Time Management Managing Time and Tasks What is time management? Time can't be managed ­ but you can manage the amount of time you use each day for fun, work, rest, and time spent with others. Why is time management important? You have responsibilities to yourself, to your family and friends, to your

  15. UGE Scheduler Cycle Time

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

    UGE Scheduler Cycle Time UGE Scheduler Cycle Time Genepool Cycle Time Genepool Daily Genepool Weekly Phoebe Cycle Time Phoebe Daily Phoebe Weekly What is the Scheduler Cycle? The...

  16. Time and Labor Manual -Time Keepers -LSUSH

    E-Print Network [OSTI]

    Time and Labor Manual - Time Keepers - LSUSH Version Date: July 2012 #12;COPYRIGHT & TRADEMARKS create a risk of personal injury. If you use this software in dangerous applications, then you shall Guide Time and Labor Manual - Time Keepers - LSUSH Page iii Table of Contents Time and Labor Manual

  17. Time Commitments Where Does Your Time Go

    E-Print Network [OSTI]

    Kunkle, Tom

    Time Commitments Where Does Your Time Go Everyone starts the week with the same number of hours. So, why does your time go so fast? Let's find out! Number of hours of sleep each night ____ x 7 preparation/clean-up time) ____ x 7 = ____ Travel time to and from campus ___ x __ = ____ Number of hours per

  18. J. Phys. Conf. Ser. 597

    E-Print Network [OSTI]

    2015-02-17

    This content was downloaded on 14/04/2015 at 13:36. Please note that terms and ... labels were invertible elements of a C?–algebra, here they live in a general group. .... ?(?) is the Euler characteristic of ?. Another useful example for physics is when G = U(1). This is of course ..... behaviour is the content of Theorem 1.13.

  19. Microsoft Word - S07817_SER

    Office of Legacy Management (LM)

    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 NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbinsMonumentThird6010 Task U.S.SurfaceGroundwater10

  20. Time Crystals from Minimum Time Uncertainty

    E-Print Network [OSTI]

    Mir Faizal; Mohammed M. Khalil; Saurya Das

    2014-12-29

    Motivated by the Generalized Uncertainty Principle, covariance, and a minimum measurable time, we propose a deformation of the Heisenberg algebra, and show that this leads to corrections to all quantum mechanical systems. We also demonstrate that such a deformation implies a discrete spectrum for time. In other words, time behaves like a crystal.

  1. Space time and the passage of time

    E-Print Network [OSTI]

    George F. R. Ellis; Rituparno Goswami

    2012-08-26

    This paper examines the various arguments that have been put forward suggesting either that time does not exist, or that it exists but its flow is not real. I argue that (i) time both exists and flows; (ii) an Evolving Block Universe (`EBU') model of spacetime adequately captures this feature, emphasizing the key differences between the past, present, and future; (iii) the associated surfaces of constant time are uniquely geometrically and physically determined in any realistic spacetime model based in General Relativity Theory; (iv) such a model is needed in order to capture the essential aspects of what is happening in circumstances where initial data does not uniquely determine the evolution of spacetime structure because quantum uncertainty plays a key role in that development. Assuming that the functioning of the mind is based in the physical brain, evidence from the way that the mind apprehends the flow of time prefers this evolving time model over those where there is no flow of time.

  2. Manage Your Time 

    E-Print Network [OSTI]

    White, Lynn

    2000-06-27

    People view time in different ways, but we all could do a better job of managing our time. This publication explains three different time management tools: the 24-hour time log and chart; a self-assessment of thinking styles and time management...

  3. On Time. 6b: Quantum Mechanical Time

    E-Print Network [OSTI]

    C. K. Raju

    2008-08-09

    The existence of small amounts of advanced radiation, or a tilt in the arrow of time, makes the basic equations of physics mixed-type functional differential equations. The novel features of such equations point to a microphysical structure of time. This corresponds to a change of logic at the microphysical level. We show that the resulting logic is a quantum logic. This provides a natural and rigorous explanation of quantum interference. This structured-time interpretation of quantum mechanics is briefly compared with various other interpretations of q.m.

  4. Building Profits and Goodwill in the Wood Product Industry with Time-Of-Use Rates 

    E-Print Network [OSTI]

    Boyd, W. K.

    1986-01-01

    .S. are searching for alternatives to building generating plants. One of the alternatives used by Carolina Power & Light Company is Time-of-Use Rates. These rates give monetary incentives to customers who change their electrical usage patterns to coincide... manufacturer with a 235-employee plywood plant located in Moncure, North Carolina. The plant receives electric ser vice from Carolina Power & Light Company (CP&L), an investor-owned electric utility serving over 825,000 customers in North and South...

  5. From the Process Hitting to Petri Nets and Back Loc Paulev1

    E-Print Network [OSTI]

    Boyer, Edmond

    From the Process Hitting to Petri Nets and Back Loïc Paulevé1 , Morgan Magnin2 , Olivier Roux2 1 of the Process Hitting (, L, H) into a Petri Net with read arcs is given by PN(, L, H) (Def. 3). Basically, each

  6. LocARNA-P: Accurate boundary prediction and improved detection of structural RNAs

    E-Print Network [OSTI]

    Joshi, T.

    Current genomic screens for noncoding RNAs (ncRNAs) predict a large number of genomic regions containing potential structural ncRNAs. The analysis of these data requires highly accurate prediction of ncRNA boundaries and ...

  7. LocSens -An Indoor Location Tracking System using Wireless Sensors

    E-Print Network [OSTI]

    Ungerer, Theo

    proved itself for outdoor usage. But it is not suitable for indoor applications due to poor coverage: fbagci@uci.edu F. Kluge is with the Department of Computer Science, University of Augsburg, Germany, University of Augsburg, Germany, email: Theo.Ungerer@informatik.uni-augsburg.de N. Bagherzadeh

  8. The Hopf algebra of Fliess operators and its dual pre-Lie Loc Foissy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Hopf algebra of Fliess operators and its dual pre-Lie algebra Loïc Foissy Laboratoire de.foissy@univ-reims.fr ABSTRACT. We study the Hopf algebra H of Fliess operators coming from Control Theory in the one space R x0, x1 is both a pre-Lie algebra for the pre-Lie product dual of the coproduct of H

  9. The Hopf algebra of Fliess operators and its dual prelie algebra Loc Foissy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Hopf algebra of Fliess operators and its dual prelie algebra Loïc Foissy Laboratoire de@lmpa.univ-littoral.fr ABSTRACT. We study the Hopf algebra H of Fliess operators coming from Control Theory in the one space R x0, x1 is both a prelie algebra for the prelie product dual to the coproduct of H

  10. Rethinking urban streams : opportunities for the Nhieu Loc -- Thi Nghe River

    E-Print Network [OSTI]

    Le, Tran N. (Tran Ngoc)

    2008-01-01

    In the process of rapid expansion, many cities have turned their backs on the rivers that helped form and nurture them. Due to the perceived low cost of their existing infrastructure, many rivers have become open or enclosed ...

  11. www.rsc.org/loc Volume 9 | 2009 | High Speed Nanofluidic Protein Accumulator

    E-Print Network [OSTI]

    Steckl, Andrew J.

    with 10 nm polycarbonate nanopore membranes were utilized as high-speed protein accumulators. Double is electrically driven and operates based on differences in buffer concentration, conductance or p

  12. C:\DOCUME~1\wei\LOCALS~1\Temp\WEI13737.loc

    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 l DeInsulation at theEnergy StateSpecifiers | DepartmentWEI13737

  13. Yet another time about time - Part I

    E-Print Network [OSTI]

    Plamen L. Simeonov

    2015-08-29

    This paper presents yet another personal reflection on one the most important concepts in both science and the humanities: time. This elusive notion has been not only bothering philosophers since Plato and Aristotle. It goes throughout human history embracing all analytical and creative (anthropocentric) disciplines. Time has been a central theme in physical and life sciences, philosophy, psychology, music, art and many more. This theme is known with a vast body of knowledge across different theories and categories. What has been explored concerns its nature (rational, irrational, arational), appearances/qualia, degrees, dimensions and scales of conceptualization (internal, external, fractal, discrete, continuous, mechanical, quantum, local, global, etc.). Of particular interest have been parameters of time such as duration ranges, resolutions, modes (present, now, past, future), varieties of tenses (e.g. present perfect, present progressive, etc.) and some intuitive, but also fancy phenomenological characteristics such as arrow, stream, texture, width, depth, density, even scent. Perhaps the most distinct characteristic of this fundamental concept is the absolute time constituting the flow of consciousness according to Husserl, the reflection of pure (human) nature without having the distinction between exo and endo. This essay is a personal reflection upon the meaning of time in modern physics and phenomenological philosophy.

  14. Universal Time Tunneling

    E-Print Network [OSTI]

    Guenter Nimtz

    2009-01-26

    How much time does a tunneling wave packet spent in traversing a barrier? Quantum mechanical calculations result in zero time inside a barrier . In the nineties analogous tunneling experiments with microwaves were carried out. The results agreed with quantum mechanical calculations. Electron tunneling time is hard to measure being extremely short and parasitic effects due to the electric charge of electrons may be dominant. However, quite recently the atomic ionization tunneling time has been measured. Experimental data of photonic, phononic, and electronic tunneling time is available now and will be presented. It appears that the tunneling time is a universal property independent of the field in question.

  15. Time Asymmetric Quantum Physics

    E-Print Network [OSTI]

    A. Bohm

    1999-02-26

    Mathematical and phenomenological arguments in favor of asymmetric time evolution of micro-physical states are presented.

  16. Noncommutative Two Time Physics

    E-Print Network [OSTI]

    W. Chagas-Filho

    2006-05-10

    We present a classical formalism describing two-time physics with Abelian canonical gauge field backgrounds. The formalism can be used as a starting point for the construction of an interacting quantized two-time physics theory in a noncommutative soace-time.

  17. Time-periodic universes

    E-Print Network [OSTI]

    De-Xing Kong; Kefeng Liu; Ming Shen

    2008-08-30

    In this letter we construct a new time-periodic solution of the vacuum Einstein's field equations whose Riemann curvature norm takes the infinity at some points. We show that this solution is intrinsically time-periodic and describes a time-periodic universe with the "black hole". New physical phenomena are investigated and new singularities are analyzed for this universal model.

  18. Absolute Time Derivatives

    E-Print Network [OSTI]

    T. Matolcsi; P. Van

    2006-10-23

    A four dimensional treatment of nonrelativistic space-time gives a natural frame to deal with objective time derivatives. In this framework some well known objective time derivatives of continuum mechanics appear as Lie-derivatives. Their coordinatized forms depends on the tensorial properties of the relevant physical quantities. We calculate the particular forms of objective time derivatives for scalars, vectors, covectors and different second order tensors from the point of view of a rotating observer. The relation of substantial, material and objective time derivatives is treated.

  19. Time scales in LISA

    E-Print Network [OSTI]

    S. Pireaux

    2007-03-23

    The LISA mission is a space interferometer aiming at the detection of gravitational waves in the [$10^{-4}$,$10^{-1}$] Hz frequency band. In order to reach the gravitational wave detection level, a Time Delay Interferometry (TDI) method must be applied to get rid of (most of) the laser frequency noise and optical bench noise. This TDI analysis is carried out in terms of the coordinate time corresponding to the Barycentric Coordinate Reference System (BCRS), TCB, whereas the data at each of the three LISA stations is recorded in terms of each station proper time. We provide here the required proper time versus BCRS time transformation. We show that the difference in rate of station proper time versus TCB is of the order of $5 10^{-8}$. The difference between station proper times and TCB exhibits an oscillatory trend with a maximum amplitude of about $10^{-3}$ s.

  20. Time in Quantum Mechanics

    E-Print Network [OSTI]

    Curt A. Moyer

    2013-05-23

    The failure of conventional quantum theory to recognize time as an observable and to admit time operators is addressed. Instead of focusing on the existence of a time operator for a given Hamiltonian, we emphasize the role of the Hamiltonian as the generator of translations in time to construct time states. Taken together, these states constitute what we call a timeline, or quantum history, that is adequate for the representation of any physical state of the system. Such timelines appear to exist even for the semi-bounded and discrete Hamiltonian systems ruled out by Pauli's theorem. However, the step from a timeline to a valid time operator requires additional assumptions that are not always met. Still, this approach illuminates the crucial issue surrounding the construction of time operators, and establishes quantum histories as legitimate alternatives to the familiar coordinate and momentum bases of standard quantum theory.

  1. Matter: Space without Time

    E-Print Network [OSTI]

    Yousef Ghazi-Tabatabai

    2012-11-19

    While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.

  2. Intrinsic Time Quantum Geometrodynamics

    E-Print Network [OSTI]

    Eyo Eyo Ita III; Chopin Soo; Hoi-Lai Yu

    2015-02-06

    Quantum Geometrodynamics with intrinsic time development and momentric variables is presented. An underlying SU(3) group structure at each spatial point regulates the theory. The intrinsic time behavior of the theory is analyzed, together with its ground state and primordial quantum fluctuations. Cotton-York potential dominates at early times when the universe was small; the ground state naturally resolves Penrose's Weyl Curvature Hypothesis, and thermodynamic and gravitational `arrows of time' point in the same direction. Ricci scalar potential corresponding to Einstein's General Relativity emerges as a zero-point energy contribution. A new set of fundamental commutation relations without Planck's constant emerges from the unification of Gravitation and Quantum Mechanics.

  3. Time functions as utilities

    E-Print Network [OSTI]

    E. Minguzzi

    2009-09-04

    Every time function on spacetime gives a (continuous) total preordering of the spacetime events which respects the notion of causal precedence. The problem of the existence of a (semi-)time function on spacetime and the problem of recovering the causal structure starting from the set of time functions are studied. It is pointed out that these problems have an analog in the field of microeconomics known as utility theory. In a chronological spacetime the semi-time functions correspond to the utilities for the chronological relation, while in a K-causal (stably causal) spacetime the time functions correspond to the utilities for the K^+ relation (Seifert's relation). By exploiting this analogy, we are able to import some mathematical results, most notably Peleg's and Levin's theorems, to the spacetime framework. As a consequence, we prove that a K-causal (i.e. stably causal) spacetime admits a time function and that the time or temporal functions can be used to recover the K^+ (or Seifert) relation which indeed turns out to be the intersection of the time or temporal orderings. This result tells us in which circumstances it is possible to recover the chronological or causal relation starting from the set of time or temporal functions allowed by the spacetime. Moreover, it is proved that a chronological spacetime in which the closure of the causal relation is transitive (for instance a reflective spacetime) admits a semi-time function. Along the way a new proof avoiding smoothing techniques is given that the existence of a time function implies stable causality, and a new short proof of the equivalence between K-causality and stable causality is given which takes advantage of Levin's theorem and smoothing techniques.

  4. Time Domain Reflectometry Theory

    E-Print Network [OSTI]

    Palermo, Sam

    Time Domain Reflectometry Theory Application Note 1304-2 For Use with Agilent 86100 Infiniium DCA #12;2 The most general approach to evaluating the time domain response of any electromagnetic system a concise presentation of the fundamentals of TDR and then relates these fundamentals to the parameters

  5. Digital time delay

    DOE Patents [OSTI]

    Martin, A.D.

    1986-05-09

    Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay provides a first output signal at predetermined interpolation intervals corresponding to the desired high resolution time interval. Latching circuits latch the high resolution data to form a first synchronizing data set. A selected time interval has been preset to internal counters and corrected for circuit propagation delay times having the same order of magnitude as the desired high resolution. Internal system clock pulses count down the counters to generate an internal pulse delayed by an internal which is functionally related to the preset time interval. A second LCD corrects the internal signal with the high resolution time delay. A second internal pulse is then applied to a third LCD to generate a second set of synchronizing data which is complementary with the first set of synchronizing data for presentation to logic circuits. The logic circuits further delay the internal output signal with the internal pulses. The final delayed output signal thereafter enables the output pulse generator to produce the desired output pulse at the preset time delay interval following input of the trigger pulse.

  6. Kairoscope : coordinating time socially

    E-Print Network [OSTI]

    Martin, Reed Eric

    2010-01-01

    If everyone says time is relative, why is it still so rigidly defined? There have been many attempts to address the issue of coordinating schedules, but each of these attempts runs into an issue of rigidity: in order to ...

  7. The Williston time capsule

    E-Print Network [OSTI]

    Moses, David (David Patrick)

    2015-01-01

    This project is a time capsule of the oil economy, created by entombing everyday objects made from and powered by petroleum into a landscape that spatially recreates the processes of drilling and fracking a contemporary ...

  8. Sublinear Time Algorithms

    E-Print Network [OSTI]

    Rubinfeld, Ronitt

    Sublinear time algorithms represent a new paradigm in computing, where an algorithm must give some sort of an answer after inspecting only a very small portion of the input. We discuss the types of answers that one can ...

  9. Time, energy & form

    E-Print Network [OSTI]

    McInnis, Martha Jane

    1982-01-01

    Physical manifestations of time occur in natural forms of all sizes. Architectural form serves as shelter while providing a built envelope of human life, simultaneously influencing and influenced by energetic activities ...

  10. Drug Retention Times

    SciTech Connect (OSTI)

    Center for Human Reliability Studies

    2007-05-01

    The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user

  11. Drug Retention Times

    SciTech Connect (OSTI)

    Center for Human Reliability Studies

    2007-05-01

    The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user.

  12. Time in quantum mechanics 

    E-Print Network [OSTI]

    Chapin, Kimberly R.

    1997-01-01

    TIME IN QUANTUM MECHANICS A Thesis by KIMBERLY R. CHAPIN Submitted to Texas A8M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: Marian O. Scully (Chair... of Committee) Edward S. Fry (Member) aan Laane (Member) Thomas W. Adair, III (Head of Department) August 1997 Major Subject: Physics TIME IN QIJANTUM MECHANICS A Thesis by KIMBERLY R. CHAPIN Submitted to the Oflice of Graduate Studies of Texas A...

  13. The thermodynamics of time

    E-Print Network [OSTI]

    Dries Sels; Michiel Wouters

    2015-01-22

    The problem of time is a deep paradox in our physical description of the world. According to Aristotle's relational theory, time is a measure of change and does not exist on its own. In contrast, quantum mechanics, just like Newtonian mechanics, is equipped with a master clock that dictates the evolution of a system. This clock is infinitely precise and tacitly supplied free of charge from outside physics. Not only does this absolute time make it notoriously difficult to make a consistent theory of quantum gravity, it is also the underlying problem in establishing the second law. Indeed, contrary to our experience, the Wheeler-deWitt equation --a canonical quantization of general relativity-- predicts a static universe. Similarly, when simply concerned with the dynamics of a closed quantum system, there is no second law because the Von Neumann entropy is invariant under unitary transformations. Here we are mainly concerned with the latter problem and we show that it can be resolved by attributing a minimal amount of resources to the measurement of time. Although there is an absolute time in quantum mechanics, an observer can only establish a time by measuring a clock. For a local measurement, the minimal entropy production is equal to the number of ticks. This lower bound is attained by a black hole.

  14. Time and Labor 9.1 Time Keeper Payroll -HCSD

    E-Print Network [OSTI]

    Time and Labor 9.1 Time Keeper Payroll - HCSD Version Date: July 2012 #12;COPYRIGHT & TRADEMARKS create a risk of personal injury. If you use this software in dangerous applications, then you shall Guide Time and Labor 9.1 Time Keeper Payroll - HCSD Page iii Table of Contents Time and Labor 9.1 Time

  15. Timed Alternating-Time Temporal Logic Thomas A. Henzinger1

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    equally powerful options for updating the state of the game, advancing time, or blocking time. Second, we in order to specify real-time objectives for games played on timed structures. We define the semantics Timed games are a formal model for the synthesis of real-time systems [22, 20]. While much research

  16. Time-Resolved

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopment TopMetathesisSediments andTheTime-Resolved Time-Resolved

  17. New and Emerging Technologies for Real-Time Air and Surface Beryllium Monitoring

    SciTech Connect (OSTI)

    Phifer, B.E. Jr.; Churnetski, E.L.; Cooke, L.E.; Reed, J.J.; Howell, M.L.; Smith, V.D.

    2001-09-01

    In this study, five emerging technologies were identified for real-time monitoring of airborne beryllium: Microwave-Induced Plasma Spectroscopy (MIPS), Aerosol Beam-Focused Laser-Induced Plasma Spectroscopy (ABFLIPS), Laser-Induced Breakdown Spectroscopy (LIBS), Surfaced-Enhanced Raman Scattering (SERS) Spectroscopy, and Micro-Calorimetric Spectroscopy (CalSpec). Desired features of real-time air beryllium monitoring instrumentation were developed from the Y-12 CBDPP. These features were used as guidelines for the identification of potential technologies as well as their unique demonstrated capability to provide real-time monitoring of similar materials. However, best available technologies were considered, regardless of their ability to comply with the desired features. None of the five technologies have the capability to measure the particle size of airborne beryllium. Although reducing the total concentration of airborne beryllium is important, current literature suggests that reducing or eliminating the concentration of respirable beryllium is critical for worker health protection. Eight emerging technologies were identified for surface monitoring of beryllium. CalSpec, MIPS, SERS, LIBS, Laser Ablation, Absorptive Stripping Voltametry (ASV), Modified Inductively Coupled Plasma (ICP) Spectroscopy, and Gamma BeAST. Desired features of real-time surface beryllium monitoring were developed from the Y-12 CBDPP. These features were used as guidelines for the identification of potential technologies. However, the best available technologies were considered regardless of their ability to comply with the desired features.

  18. Time Activity Time Activity Time Activity Tuesday CLOSED CONFERENCE CLOSED CONFERENCE CLOSED CONFERENCE

    E-Print Network [OSTI]

    Burg, Theresa

    Time Activity Time Activity Time Activity Tuesday CLOSED CONFERENCE CLOSED CONFERENCE CLOSED CONFERENCE 2-Jun-15 Wednesday CLOSED CONFERENCE CLOSED CONFERENCE CLOSED CONFERENCE 3-Jun-15 Thursday CLOSED

  19. Time in Cosmology

    E-Print Network [OSTI]

    R. Brout; R. Parentani

    1999-02-05

    The notion of time in cosmology is revealed through an examination of transition matrix elements of radiative processes occurring in the cosmos. To begin with, the very concept of time is delineated in classical physics in terms of correlations between the succession of configurations which describe a process and a standard trajectory called the clock. The total is an isolated system of fixed energy. This is relevant for cosmology in that the universe is an isolated system which we take to be homogeneous and isotropic. Furthermore, in virtue of the constraint which arises from reparametrization invariance of time, it has total energy zero. Therefore the momentum of the scale factor is determined from the energy of matter. In the quantum theory this is exploited through use of the WKB approximation for the wave function of the scale factor, justified for a large universe. The formalism then gives rise to matrix elements describing matter processes. These are shown to take on the form of usual time dependent quantum amplitudes wherein the temporal dependence is given by a background which is once more fixed by the total energy of matter.

  20. Time and Attendance Reporting

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-10-22

    DOE O 535.1 establishes the Department's requirements and responsibilities governing time and attendance reporting. The purpose of this revision is to reflect the transition of payroll processing from the Capital Accounting Center to the Defense Finance and Accounting System. Cancels DOE O 3600.1B. Canceled by DOE O 322.1C.

  1. Presenter:! Time & Date: !

    E-Print Network [OSTI]

    Collar, Juan I.

    a checkbook, you can understand which energy options have the promise of supporting humankind - wind, hydro://cfcpwork.uchicago.edu/mailman/listinfo/cafe! A Reality Check on Alternative Energy! #12;A Reality Check on Alternative Energy! Presenter: Liz Moyer! Time a bigger, richer population without fossil fuels (which will definitely run out someday)? Energy is a hot

  2. Time-Encoded Imagers.

    SciTech Connect (OSTI)

    Marleau, Peter; Brubaker, Erik

    2014-11-01

    This report provides a short overview of the DNN R&D funded project, Time-Encoded Imagers. The project began in FY11 and concluded in FY14. The Project Description below provides the overall motivation and objectives for the project as well as a summary of programmatic direction. It is followed by a short description of each task and the resulting deliverables.

  3. Time reversal communication system

    DOE Patents [OSTI]

    Candy, James V. (Danville, CA); Meyer, Alan W. (Danville, CA)

    2008-12-02

    A system of transmitting a signal through a channel medium comprises digitizing the signal, time-reversing the digitized signal, and transmitting the signal through the channel medium. The channel medium may be air, earth, water, tissue, metal, and/or non-metal.

  4. Tevatron injection timing

    SciTech Connect (OSTI)

    Saritepe, S.; Annala, G.

    1993-06-01

    Bunched beam transfer from one accelerator to another requires coordination and synchronization of many ramped devices. During collider operation timing issues are more complicated since one has to switch from proton injection devices to antiproton injection devices. Proton and antiproton transfers are clearly distinct sequences since protons and antiprotons circulate in opposite directions in the Main Ring (MR) and in the Tevatron. The time bumps are different, the kicker firing delays are different, the kickers and lambertson magnets are different, etc. Antiprotons are too precious to be used for tuning purposes, therefore protons are transferred from the Tevatron back into the Main Ring, tracing the path of antiprotons backwards. This tuning operation is called ``reverse injection.`` Previously, the reverse injection was handled in one supercycle. One batch of uncoalesced bunches was injected into the Tevatron and ejected after 40 seconds. Then the orbit closure was performed in the MR. In the new scheme the lambertson magnets have to be moved and separator polarities have to be switched, activities that cannot be completed in one supercycle. Therefore, the reverse injection sequence was changed. This involved the redefinition of TVBS clock event $D8 as MRBS $D8 thus making it possible to inject 6 proton batches (or coalesced bunches) and eject them one at a time on command, performing orbit closure each time in the MR. Injection devices are clock event driven. The TCLK is used as the reference clock. Certain TCLK events are triggered by the MR beam synchronized clock (MRBS) events. Some delays are measured in terms of MRBS ticks and MR revolutions. See Appendix A for a brief description of the beam synchronized clocks.

  5. Time Reversal Violation

    SciTech Connect (OSTI)

    Quinn, H; /SLAC

    2009-01-27

    This talk briefly reviews three types of time-asymmetry in physics, which I classify as universal, macroscopic and microscopic. Most of the talk is focused on the latter, namely the violation of T-reversal invariance in particle physics theories. In sum tests of microscopic T-invariance, or observations of its violation, are limited by the fact that, while we can measure many processes, only in very few cases can we construct a matched pair of process and inverse process and observe it with sufficient sensitivity to make a test. In both the cases discussed here we can achieve an observable T violation making use of flavor tagging, and in the second case also using the quantum properties of an antisymmetric coherent state of two B mesons to construct a CP-tag. Both these tagging properties depend only on very general properties of the flavor and/or CP quantum numbers and so provide model independent tests for T-invariance violations. The microscopic laws of physics are very close to T-symmetric. There are small effects that give CP- and T-violating processes in three-generation-probing weak decays. Where a T-violating observable can be constructed we see the relationships between T-violation and CP-violation expected in a CPT conserving theory. These microscopic effects are unrelated to the 'arrow of time' that is defined by increasing entropy, or in the time direction defined by the expansion of our Universe.

  6. Space-time diamonds

    E-Print Network [OSTI]

    Daiqin Su; T. C. Ralph

    2015-07-02

    We show that the particle number distribution of diamond modes, modes that are localised in a finite space-time region, are thermal for the Minkowski vacuum state of a massless scalar field, an analogue to the Unruh effect. The temperature of the diamond is inversely proportional to its size. An inertial observer can detect this thermal radiation by coupling to the diamond modes using an appropriate energy scaled detector. We further investigate the correlations between various diamonds and find that entanglement between adjacent diamonds dominates.

  7. Time Valid One-Time Signature for Time-Critical Multicast Data Authentication

    E-Print Network [OSTI]

    Nahrstedt, Klara

    malicious attacks. In this paper, we propose a novel signature model ­ Time Valid One-Time Signature (TVTime Valid One-Time Signature for Time-Critical Multicast Data Authentication Qiyan Wang, Himanshu-OTS) ­ to boost the efficiency of regular one-time signature schemes. Based on the TV-OTS model, we design

  8. Advertising Emergency Department Wait Times

    E-Print Network [OSTI]

    Weiner, Scott G

    2013-01-01

    studies evaluating the advertising of ED wait times. Only 1potentially used for advertising may be inaccurate. AccessedE ditorial Advertising Emergency Department Wait Times Scott

  9. Final Exam Location and Time

    E-Print Network [OSTI]

    Final Exam Location and Time. Math 162 Fall 2001. Date: Wednesday December 12, 2001. Time: 7:00 pm -9:00 pm. Location: Lambert Fieldhouse ...

  10. Final Exam Location and Time

    E-Print Network [OSTI]

    Final Exam Location and Time. Math 161 Fall 2001. Date: Friday December 14, 2001. Time: 8:00 am -10:00 am. Location: Lambert Fieldhouse ...

  11. 1. 2 , 4 2 ( Times

    E-Print Network [OSTI]

    Kaplan, Alexander

    format with double line spacing (font Times New Roman, 12 pt; margins: left and up -- 30 mm, right , . 20. , , . 1. 2 , 4 2 ( Times New Roman, 12 pt

  12. Denoising Deterministic Time Series

    E-Print Network [OSTI]

    Steven P. Lalley; Andrew B. Nobel

    2006-04-21

    This paper is concerned with the problem of recovering a finite, deterministic time series from observations that are corrupted by additive, independent noise. A distinctive feature of this problem is that the available data exhibit long-range dependence and, as a consequence, existing statistical theory and methods are not readily applicable. This paper gives an analysis of the denoising problem that extends recent work of Lalley, but begins from first principles. Both positive and negative results are established. The positive results show that denoising is possible under somewhat restrictive conditions on the additive noise. The negative results show that, under more general conditions on the noise, no procedure can recover the underlying deterministic series.

  13. Real time automated inspection

    DOE Patents [OSTI]

    Fant, K.M.; Fundakowski, R.A.; Levitt, T.S.; Overland, J.E.; Suresh, B.R.; Ulrich, F.W.

    1985-05-21

    A method and apparatus are described relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections. 43 figs.

  14. Time encoded radiation imaging

    DOE Patents [OSTI]

    Marleau, Peter; Brubaker, Erik; Kiff, Scott

    2014-10-21

    The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

  15. Medios al ser vicio de la investigacin

    E-Print Network [OSTI]

    tratamiento así como la prueba del ANRS, con miras a simplificar la toma de antirretrovirales. ··· Laboratorio velocidad y naturaleza de las corrientes oceánicas. Desciende planeando en las corrientes hasta 1.000 m de utilizado para estudiar las corrientes qu

  16. Microsoft Word - S06713_SER.doc

    Office of Legacy Management (LM)

    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 NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbinsMonumentThird6010 Task OrderAnnualRadiological

  17. Time's Ontic Voltage Craig Callender

    E-Print Network [OSTI]

    Callender, Craig

    Time's Ontic Voltage Craig Callender Philosophy of time, as practiced throughout the last hundred venue for attacking questions about the nature of time--in sharp contrast to the primary venue slowly in philosophy of time.1 Since twentieth-century analytic philosophy as a whole often drew

  18. Untameable Timed Automata! (Extended Abstract)

    E-Print Network [OSTI]

    Doyen, Laurent

    are a widely studied model for real­time systems. Since 8 years, several tools implement this model­life systems. 1 Introduction Real­Time Systems ­ Since their introduction by Alur and Dill in [AD94], timed au­ tomata are one of the most studied models for real­time systems. Numerous works have been devoted

  19. Untameable Timed Automata! (Extended Abstract)

    E-Print Network [OSTI]

    Doyen, Laurent

    model for real-time systems. Since 8 years, several tools implement this model and are successfully used for a restricted class of timed automata, which has been sufficient for modeling numerous real-life systems. 1 Introduction Real-Time Systems - Since their introduction by Alur and Dill in [AD94], timed au- tomata are one

  20. SLH Timing Belt Powertrain

    SciTech Connect (OSTI)

    Schneider, Abe

    2014-04-09

    The main goal of this proposal was to develop and test a novel powertrain solution for the SLH hydroEngine?, a low-cost, efficient low-head hydropower technology. Nearly two-thirds of U.S. renewable electricity is produced by hydropower (EIA 2010). According to the U.S. Department of Energy; this amount could be increased by 50% with small hydropower plants, often using already-existing dams (Hall 2004). There are more than 80,000 existing dams, and of these, less than 4% generate power (Blankinship 2009). In addition, there are over 800 irrigation districts in the U.S., many with multiple, non-power, low-head drops. These existing, non-power dams and irrigation drops could be retrofitted to produce distributed, baseload, renewable energy with appropriate technology. The problem is that most existing dams are low-head, or less than 30 feet in height (Ragon 2009). Only about 2% of the available low-head hydropower resource in the U.S. has been developed, leaving more than 70 GW of annual mean potential low-head capacity untapped (Hall 2004). Natel Energy, Inc. is developing a low-head hydropower turbine that operates efficiently at heads less than 6 meters and is cost-effective for deployment across multiple low-head structures. Because of the unique racetrack-like path taken by the prime-movers in the SLH, a flexible powertrain is required. Historically, the only viable technological solution was roller chain. Despite the having the ability to easily attach blades, roller chain is characterized by significant drawbacks, including high cost, wear, and vibration from chordal action. Advanced carbon-#12;fiber-reinforced timing belts have been recently developed which, coupled with a novel belt attachment system developed by Natel Energy, result in a large reduction in moving parts, reduced mass and cost, and elimination of chordal action for increased fatigue life. The work done in this project affirmatively addressed each of the following 3 major uncertainties concerning a timing-belt based hydroEngine ?powertrain: 1. Can a belt handle the high torques and power loads demanded by the SLH? (Yes.) 2. Can the SLH blades be mounted to belt with a connection that can withstand the loads encountered in operation? (Yes.) 3. Can the belt, with blade attachments, live through the required cyclic loading? (Yes.) The research adds to the general understanding of sustainable small hydropower systems by using innovative system testing to develop and demonstrate performance of a novel powertrain solution, enabling a new type of hydroelectric turbine to be commercially developed. The technical effectiveness of the methods investigated has been shown to be positive through an extensive design and testing process accommodating many constraints and goals, with a major emphasis on high cycle fatigue life. Economic feasibility of the innovations has been demonstrated through many iterations of design for manufacturability and cost reduction. The project is of benefit to the public because it has helped to develop a solution to a major problem -- despite the large available potential for new low-head hydropower, high capital costs and high levelized cost of electricity (LCOE) continue to be major barriers to project development. The hydroEngine? represents a significant innovation, leveraging novel fluid mechanics and mechanical configuration to allow lower-cost turbine manufacture and development of low head hydropower resources.

  1. Dead-time optimized time-correlated photon counting instrument with synchronized, independent timing channels

    E-Print Network [OSTI]

    Enderlein, Jörg

    Dead-time optimized time-correlated photon counting instrument with synchronized, independent timing channels Michael Wahla and Hans-Jürgen Rahn PicoQuant GmbH, Rudower Chaussee 29, D-12489 Berlin December 2006; accepted 19 February 2007; published online 23 March 2007 Time-correlated single photon

  2. Time and Labor 9.1 Time Keeper -HCSD

    E-Print Network [OSTI]

    Time and Labor 9.1 Time Keeper - HCSD Version Date: July 2012 #12;COPYRIGHT & TRADEMARKS Copyright create a risk of personal injury. If you use this software in dangerous applications, then you shall

  3. Date of Injury Date Time In Time Out

    E-Print Network [OSTI]

    : NORMAL Work Schedule (ie: MF, 8am5pm)First Name Last Name # of hours missed from work #12;RISK MGTDate of Injury Date Time In Time Out Total time worked medical appt no work within restrictions Next Medical Appointment(s): Tuesday of each week. Risk Mgt email: workcomp@colostate.edu; fax

  4. Time translation of quantum properties

    E-Print Network [OSTI]

    L. Vanni; R. Laura

    2008-12-03

    Based on the notion of time translation, we develop a formalism to deal with the logic of quantum properties at different times. In our formalism it is possible to enlarge the usual notion of context to include composed properties involving properties at different times. We compare our results with the theory of consistent histories.

  5. Time machines and quantum theory

    E-Print Network [OSTI]

    Mark J Hadley

    2006-12-02

    There is a deep structural link between acausal spacetimes and quantum theory. As a consequence quantum theory may resolve some "paradoxes" of time travel. Conversely, non-time-orientable spacetimes naturally give rise to electric charges and spin half. If an explanation of quantum theory is possible, then general relativity with time travel could be it.

  6. PAPER www.rsc.org/loc | Lab on a Chip Crossing microfluidic streamlines to lyse, label and wash cells

    E-Print Network [OSTI]

    functional laminar streamlines in pressure-driven microfluidic flow using an asymmetric post array.1 and analyzed on-chip without cross- contamination. In normal laminar flow, the migration of objects like cells forms an angle a with respect to the channel walls that defines the average fluid flow direction. During

  7. www.rsc.org/loc Volume 6 | Number 2 | February 2006 | Pages 161320 ISSN 1473-0197

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    ­1138). This platform relies on laminar flow of two streams of liquid with different temperature, and on rapid prototyping in polydimethylsiloxane (PDMS). Here, we characterized fluid flow and heat transport characterize a microfluidic system, based on laminar flow, that we developed1 to create environments

  8. MitoLoc: A method for the simultaneous quantification mitochondrial network morphology and membrane potential in single cells

    E-Print Network [OSTI]

    Vowinckel, Jakob; Hartl, Johannes; Butler, Richard; Ralser, Markus

    2015-07-13

    . Commun. 382, 227–231. doi:10.1016/j.bbrc.2009.02.117 Martin, J., Mahlke, K., Pfanner, N., 1991. Role of an energized inner membrane in mitochondrial protein import. Delta psi drives the movement of presequences. J. Biol. Chem. 266, 18051–18057. Merz...

  9. PAPER www.rsc.org/loc | Lab on a Chip Teflon films for chemically-inert microfluidic valves and pumps

    E-Print Network [OSTI]

    and pumps William H. Grover,a Marcio G. von Muhlena and Scott R. Manalis*a,b Received 14th January 2008800600h We present a simple method for fabricating chemically-inert Teflon microfluidic valves and pumps in glass microfluidic devices. These structures are modeled after monolithic membrane valves and pumps

  10. Parcel delivery and urban logistics-changes in urban courier, express and parcel services: the French (DUCRET, Raphalle; DELAITRE, Loc)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Parcel delivery and urban logistics- changes in urban courier, express and parcel services PARCEL DELIVERY AND URBAN LOGISTICS- CHANGES IN URBAN COURIER, EXPRESS AND PARCEL SERVICES: THE FRENCH new logistic organisations. The purpose of this paper is to give an updated overview of the urban

  11. www.rsc.org/loc Volume8|Number12|December2008|Pages19652224 ISSN1473-0197

    E-Print Network [OSTI]

    Singh, Anup

    is intended for rapid, point-of-care (and, in future, point-of-incident) testing in case of an accidental by lymphatic and blood vessels and accumulates in the liver and spleen, while inhaled ricin quickly damages of intoxication do not appear until 12­24 hours post-exposure. Shiga toxin intoxication is less well understood

  12. The LCLS Timing Event System

    SciTech Connect (OSTI)

    Dusatko, John; Allison, S.; Browne, M.; Krejcik, P.; /SLAC

    2012-07-23

    The Linac Coherent Light Source requires precision timing trigger signals for various accelerator diagnostics and controls at SLAC-NAL. A new timing system has been developed that meets these requirements. This system is based on COTS hardware with a mixture of custom-designed units. An added challenge has been the requirement that the LCLS Timing System must co-exist and 'know' about the existing SLC Timing System. This paper describes the architecture, construction and performance of the LCLS timing event system.

  13. Setting and Maintaining Arecibo Observatory's Timing Systems

    E-Print Network [OSTI]

    Frequency Standard 14 Time Code Generators TRAK Synchronized Time Code Generator 38 EECO Time Code Generator the time codes if the TRAC Synchronized Time Code Generator fails. Soon the TrueTime time code generator) Time Code Generator TRAK Synchronized Time Code Generator EECO Time Code Generator Transfer standard

  14. Local-time effect on small space-time scale

    E-Print Network [OSTI]

    V. A. Panchelyuga; V. A. Kolombet; M. S. Panchelyuga; S. E. Shnoll

    2006-10-18

    The paper presents an investigation of local-time effect - one of the manifestations of macroscopic fluctuations phenomena. Was shown the existence of the named effect for longitudinal distance between locations of measurements up to 500 meters. Also a structure of intervals distribution in neighborhood of local-time peak was studied and splitting of the peak was found out. Obtained results lead to conclusion about sharp anisotropy of space-time.

  15. Time Consistent Risk Measure Under Stopping Time Framework ...

    E-Print Network [OSTI]

    2015-02-13

    to the stochastic volatility of security markets and constantly change of economic and financial information, the earliest target reaching time is random, it then ...

  16. On the Flow of Time

    E-Print Network [OSTI]

    George F R Ellis

    2008-12-01

    Current theoretical physics suggests the flow of time is an illusion: the entire universe just is, with no special meaning attached to the present time. This paper points out that this view, in essence represented by usual space-time diagrams, is based on time-reversible microphysical laws, which fail to capture essential features of the time-irreversible nature of decoherence and the quantum measurement process, as well as macro-physical behaviour and the development of emergent complex systems, including life, which exist in the real universe. When these are taken into account, the unchanging block universe view of spacetime is best replaced by an evolving block universe which extends as time evolves, with the potential of the future continually becoming the certainty of the past; spacetime itself evolves, as do the entities within it. However this time evolution is not related to any preferred surfaces in spacetime; rather it is associated with the evolution of proper time along families of world lines. The default state of fundamental physics should not be taken to be a time irreversible evolution of physical states: it is an ongoing irreversible development of time itself.

  17. Time is not the problem

    E-Print Network [OSTI]

    Olaf Dreyer

    2009-04-22

    Attempts to quantize general relativity encounter an odd problem. The Hamiltonian that normally generates time evolution vanishes in the case of general relativity as a result of diffeomorphism invariance. The theory seems to be saying that time does not exist. The most obvious feature of our world, namely that time seems to progress and that the world changes accordingly becomes a problem in this presumably fundamental theory. This is called the problem of time. In this essay we argue that this problem is the result of an unphysical idealization. We are caught in this "problem of time" trap because we took a wrong turn in the early days of relativity by permanently including a split of geometry and matter into our physical theories. We show that another possibility exists that circumvents the problem of time and also sheds new light on other problems like the cosmological constant problem and the horizon problem in early universe cosmology.

  18. Three-body dwell time

    SciTech Connect (OSTI)

    Kelkar, N. G.

    2010-06-15

    The lifetime of an unstable state or resonance formed as an intermediate state in two-body scattering is known to be related to the dwell time or the time spent within a given region of space by the two interacting particles. This concept is extended to the case of three-body systems and a relation connecting the three-body dwell time with the two-body dwell times of the substructures of the three-body system is derived for the case of separable wave functions. The Kapur-Peierls formalism is revisited to discover one of the first definitions of dwell time in the literature. An extension of the Kapur-Peierls formalism to the three-body case shows that the lifetime of a three-body resonance can indeed be given by the three-body dwell time.

  19. Reactor control rod timing system

    DOE Patents [OSTI]

    Wu, Peter T. K. (Clifton Park, NY)

    1982-01-01

    A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  20. Reactor control rod timing system

    SciTech Connect (OSTI)

    Wu, P.T.

    1982-02-09

    A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (Above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  1. Commencement Ceremony Department Time Location Department and Major Time Location

    E-Print Network [OSTI]

    Kaji, Hajime

    Engineering 15:30 Bldg. 63 Classroom 01 (2nd Fl.) Industrial and Management Systems Engineering 15:30 Bldg. 63 and Management 15:30 Bldg. 63 Classroom 01 (2nd Fl.) Department Time Location Department and Major Time Location:30 Bldg. 57 202 Modern Mechanical Engineering 10:30 Bldg. 57 202 Industrial and Management Systems

  2. 49 Stress-timed vs. Syllable-timed Languages

    E-Print Network [OSTI]

    Mehler, Jacques

    49 Stress-timed vs. Syllable- timed Languages Marina Nespor Mohinish Shukla Jacques Mehler 1; Prince 1983; Nespor & Vogel 1989; chapter 43: representations of word stress), the element that "establishes order" in the flow of speech is stress: universally, stressed and unstressed positions alternate

  3. Time Structure of Muonic Showers

    E-Print Network [OSTI]

    L. Cazon; R. A. Vazquez; A. A. Watson; E. Zas

    2003-11-10

    An analytical description of the time structure of the pulses induced by muons in air showers at ground level is deduced assuming the production distance distribution for the muons can be obtained elsewhere. The results of this description are compared against those obtained from simulated showers using AIRES. Major contributions to muon time delays are identified and a relation between the time structure and the depth distribution is unveiled.

  4. Seismic velocity estimation from time migration

    E-Print Network [OSTI]

    Cameron, Maria Kourkina

    2007-01-01

    v List of Tables Comparison of time migration and depthof seismic imaging: time migration and depth migration. TimeComparison of time migration and depth migration Adequate

  5. Time and maps Menno-Jan Kraak

    E-Print Network [OSTI]

    Time and maps Menno-Jan Kraak Time and maps ! · Why interested in time? · What is time and · How is time perceived? · How is time represented? Why interested in time? GIScience perspective) - analysis of changes over time - analysis of patterns of change over time ! · Development of methods

  6. Quantum gravity, the origin of time and time's arrow

    SciTech Connect (OSTI)

    Moffat, J.W. (Univ. of Toronto, Ontario (Canada))

    1993-03-01

    The local Lorentz and diffeomorphism symmetries of Einstein's gravitational theory are spontaneously broken by a Higgs mechanism by invoking a phase transition in the early universe, at a critical temperature [Tc] below which the symmetry is restored. The spontaneous breakdown of the vacuum state generates an external time, and the wave function of the universe satisfies a time-dependent Schroedinger equation, which reduces to the Wheeler-deWitt equation in the classical regime for T<[Tc], allowing a semiclassical WKB approximation to the wave function. The conservation of energy is spontaneously violated for T>[Tc], and matter is created fractions of seconds after the big bang, generating the matter in the Universe. The time direction of the vacuum expectation value of the scalar Higgs field generates a time asymmetry, which defines the cosmological arrow of time and the direction of increasing entropy as the Lorentz symmetry is restored at low temperatures. 52 refs.

  7. Time Dependence of ACIS Contamination

    E-Print Network [OSTI]

    Grant, Catherine E.

    Time Dependence of ACIS Contamination Chandra Calibration Workshop 27 October 2003 Catherine Grant Source · Measuring the decay · Monitoring contamination with the ECS · Models of ECS time dependence · Monitoring contamination with the LETG · Agreement between models #12;ACIS External Calibration Source

  8. STARBASE: MANAGING CONTENTION AND TIMING

    E-Print Network [OSTI]

    Son, Sang H.

    systems (RT­DBMS) has primarily based on simulation. This chapter discusses how current real­time technology has been applied to architect an actual RT­DBMS on a real­time microkernel operating system. A real RT­DBMS must confront many practical issues which simulations typically ignore: race conditions

  9. The Time of Our Lives

    E-Print Network [OSTI]

    Mellor, David Hugh

    2001-01-01

    The article shows how McTaggart’s distinction between A- and B-series ways of locating events in time prompted and enabled the twentieth century’s most important advances in the philosophy of time. It argues that, even if the B-series represents...

  10. The Parkes Pulsar Timing Array

    E-Print Network [OSTI]

    R N Manchester

    2006-04-13

    Given sufficient sensitivity, pulsar timing observations can make a direct detection of gravitational waves passing over the Earth. Pulsar timing is most sensitive to gravitational waves with frequencies in the nanoHertz region, with the most likely astronomical sources being binary super-massive black holes in galaxy cores. The Parkes Pulsar Timing Array project uses the Parkes 64-m radio telescope to make precision timing observations of a sample of about 20 millisecond pulsars with a principal goal of making a direct detection of gravitational waves. Observations commenced about one year ago and so far sub-microsecond timing residuals have been achieved for more than half of these pulsars. New receiver and software systems are being developed with the aim of reducing these residuals to the level believed necessary for a positive detection of gravitational waves.

  11. Time-Dependent Lagrangian Biomechanics

    E-Print Network [OSTI]

    Ivancevic, Tijana T

    2009-01-01

    In this paper we present the time-dependent generalization of an 'ordinary' autonomous human musculo-skeletal biomechanics. We start with the configuration manifold of human body, given as a set of its all active degrees of freedom (DOF). This is a Riemannian manifold with a material metric tensor given by the total mass-inertia matrix of the human body segments. This is the base manifold for standard autonomous biomechanics. To make its time-dependent generalization, we need to extend it with a real time axis. On this extended configuration space we develop time-dependent biomechanical Lagrangian dynamics, using derived jet spaces of velocities and accelerations, as well as the underlying geometric evolution of the mass-inertia matrix. Keywords: Human time-dependent biomechanics, configuration manifold, jet spaces, geometric evolution

  12. Time parallel gravitational collapse simulation

    E-Print Network [OSTI]

    Kreienbuehl, Andreas; Ruprecht, Daniel; Krause, Rolf

    2015-01-01

    This article demonstrates the applicability of the parallel-in-time method Parareal to the numerical solution of the Einstein gravity equations for the spherical collapse of a massless scalar field. To account for the shrinking of the spatial domain in time, a tailored load balancing scheme is proposed and compared to load balancing based on number of time steps alone. The performance of Parareal is studied for both the sub-critical and black hole case; our experiments show that Parareal generates substantial speedup and, in the super-critical regime, can also reproduce the black hole mass scaling law.

  13. User Experiment Time-Line

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

    User Experiment Time-Line Event Target Call for proposal 2 months before proposals are due PAC Proposals Due 7 weeks before PAC meeting TAC Report for PAC Proposals (includes...

  14. Time Machine at the LHC

    E-Print Network [OSTI]

    I. Ya. Aref'eva; I. V. Volovich

    2007-10-25

    Recently, black hole and brane production at CERN's Large Hadron Collider (LHC) has been widely discussed. We suggest that there is a possibility to test causality at the LHC. We argue that if the scale of quantum gravity is of the order of few TeVs, proton-proton collisions at the LHC could lead to the formation of time machines (spacetime regions with closed timelike curves) which violate causality. One model for the time machine is a traversable wormhole. We argue that the traversable wormhole production cross section at the LHC is of the same order as the cross section for the black hole production. Traversable wormholes assume violation of the null energy condition (NEC) and an exotic matter similar to the dark energy is required. Decay of the wormholes/time machines and signatures of time machine events at the LHC are discussed.

  15. Vocal Timing in the Bat 

    E-Print Network [OSTI]

    Jarvis, Jenna N

    2013-05-01

    respond to continuous noise by increasing their call rate, and that the switch between the responses to intermittent noise and continuous noise occurs at a duty cycle of 50% or higher. Overall, this dissertation establishes that bats alter the timing...

  16. TIME SCHEDULE WINTER QUARTER 1970

    E-Print Network [OSTI]

    Kaminsky, Werner

    MASTER CON TIME SCHEDULE WINTER QUARTER 1970 ADVANCE REGISTRATION NOVEMBER 3-21 IN, please leave it or pass it along so that other students may use it. #12;Winter Quarter 1970. Examination

  17. Modeling of Time with Metamaterials

    E-Print Network [OSTI]

    Igor I. Smolyaninov; Yu-Ju Hung

    2011-05-12

    Metamaterials have been already used to model various exotic "optical spaces". Here we demonstrate that mapping of monochromatic extraordinary light distribution in a hyperbolic metamaterial along some spatial direction may model the "flow of time". This idea is illustrated in experiments performed with plasmonic hyperbolic metamaterials. Appearance of the "statistical arrow of time" is examined in an experimental scenario which emulates a Big Bang-like event.

  18. Geothermal Exploration Cost and Time

    SciTech Connect (OSTI)

    Jenne, Scott

    2013-02-13

    The Department of Energy’s Geothermal Technology Office (GTO) provides RD&D funding for geothermal exploration technologies with the goal of lowering the risks and costs of geothermal development and exploration. The National Renewable Energy Laboratory (NREL) was tasked with developing a metric in 2012 to measure the impacts of this RD&D funding on the cost and time required for exploration activities. The development of this cost and time metric included collecting cost and time data for exploration techniques, creating a baseline suite of exploration techniques to which future exploration cost and time improvements can be compared, and developing an online tool for graphically showing potential project impacts (all available at http://en.openei.org/wiki/Gateway: Geothermal). This paper describes the methodology used to define the baseline exploration suite of techniques (baseline), as well as the approach that was used to create the cost and time data set that populates the baseline. The resulting product, an online tool for measuring impact, and the aggregated cost and time data are available on the Open Energy Information website (OpenEI, http://en.openei.org) for public access. - Published 01/01/2013 by US National Renewable Energy Laboratory NREL.

  19. On the Nature of Time

    E-Print Network [OSTI]

    Radovan, Mario

    2015-01-01

    The paper puts forward a conceptual framework in which the phenomenon of time can be presented and discussed in a proper way. We argue that change is ontologically and epistemologically a more basic phenomenon than time. Time is an abstract entity created by the human mind on the basis of the experience of change. Physical reality is a process of ceaseless becoming and vanishing; time is not a part of that process. Time is the abstract bank in relation to which we measure the intensity and amount of the flow (change) of physical reality. We must differentiate physical reality from abstract entities (language) by means of which we speak about this reality. It is necessary to differentiate a formal description (formulas) from its interpretation: a correct formal description can be interpreted in a logically inconsistent and factually wrong way. We argue that the discourse about the relativity of time joins (mixes) physical reality and language, and gives an inconsistent interpretation of correct formulas. Regar...

  20. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, G.E.; Dawson, J.W.

    1981-02-11

    Reduction in the maximum time uncertainty (t/sub max/ - t/sub min/) of a series of paired time signals t/sub 1/ and t/sub 2/ varying between two input terminals and representative of a series of single events where t/sub 1/ less than or equal to t/sub 2/ and t/sub 1/ + t/sub 2/ equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t/sub min/) of the first signal t/sub 1/ closer to t/sub max/ and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20 to 800.

  1. Measuring time with physical clocks

    E-Print Network [OSTI]

    Esteban Castro-Ruiz; Flaminia Giacomini; ?aslav Brukner

    2015-07-07

    In general relativity, the picture of spacetime assigns an ideal clock to each spacetime point. Being ideal, gravitational effects due to these clocks are ignored and the flow of time according to one clock is not affected by the presence of surrounding clocks. However, if time is defined operationally, as a pointer position of a physical clock that obeys the laws of quantum mechanics and general relativity, such a picture is at most a convenient fiction. We show that the mass-energy equivalence implies gravitational interaction between the clocks, while the superposition of energy eigenstates leads to a non-fixed metric background. Based only on the assumption that both quantum mechanics and general relativity are valid in this situation, we show that the clocks necessarily get entangled through time dilation effect, which eventually leads to a loss of coherence of a single clock. Hence, the time as measured by a single clock is not well-defined. However, the general relativistic notion of time is recovered in the classical limit of clocks.

  2. Static timing analysis in VLSI design

    E-Print Network [OSTI]

    Zhou, Shuo

    2006-01-01

    II.B Static Timing AnalysisStatic Timing Analysis in the Design Flow FalseChip Analysis . . . . . . . . . . . . . . I.C Static Timing

  3. Time Series Analysis 1 Time series in astronomy

    E-Print Network [OSTI]

    Babu, G. Jogesh

    (supernovae, gamma-ray bursts) Difficulties in astronomical time series Gapped data streams: Diurnal & monthly phenomena: thermonuclear (novae, X-ray bursts), magnetic reconnection (solar/stellar flares), star death); pulsation (helioseismology, Cepheids) Stochastic phenomena: accretion (CVs, X-ray binaries, Seyfert gals

  4. Time of flight mass spectrometer

    DOE Patents [OSTI]

    Ulbricht, Jr., William H. (Arvada, CO)

    1984-01-01

    A time-of-flight mass spectrometer is described in which ions are desorbed from a sample by nuclear fission fragments, such that desorption occurs at the surface of the sample impinged upon by the fission fragments. This configuration allows for the sample to be of any thickness, and eliminates the need for complicated sample preparation.

  5. TIME-RESOLVED VIBRATIONAL SPECTROSCOPY

    SciTech Connect (OSTI)

    Andrei Tokmakoff, MIT; Paul Champion, Northeastern University; Edwin J. Heilweil, NIST; Keith A. Nelson, MIT; Larry Ziegler, Boston University

    2009-05-14

    This document contains the Proceedings from the 14th International Conference on Time-Resolved Vibrational Spectroscopy, which was held in Meredith, NH from May 9-14, 2009. The study of molecular dynamics in chemical reaction and biological processes using time-resolved spectroscopy plays an important role in our understanding of energy conversion, storage, and utilization problems. Fundamental studies of chemical reactivity, molecular rearrangements, and charge transport are broadly supported by the DOE�s Office of Science because of their role in the development of alternative energy sources, the understanding of biological energy conversion processes, the efficient utilization of existing energy resources, and the mitigation of reactive intermediates in radiation chemistry. In addition, time-resolved spectroscopy is central to all five of DOE�s grand challenges for fundamental energy science. The Time-Resolved Vibrational Spectroscopy conference is organized biennially to bring the leaders in this field from around the globe together with young scientists to discuss the most recent scientific and technological advances. The latest technology in ultrafast infrared, Raman, and terahertz spectroscopy and the scientific advances that these methods enable were covered. Particular emphasis was placed on new experimental methods used to probe molecular dynamics in liquids, solids, interfaces, nanostructured materials, and biomolecules.

  6. ANDERSON LOCALIZATION FOR TIME PERIODIC

    E-Print Network [OSTI]

    disorder, Anderson localization in Z d is stable un- der localized time-periodic perturbations by proving random Schrodinger operators at large disorder has been well known since the seminal work of Fr is approximated by the potential V . The equation governing the system is (1.5) i @ @t = (#1; + V ) on Z d #2

  7. High resolution time interval counter

    DOE Patents [OSTI]

    Condreva, K.J.

    1994-07-26

    A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respective pulse stretchers of a second subsequent clock pulse. Output signals are thereafter supplied to a pair of start and stop counters operable to generate a pair of binary output words representative of the measure of the width of the pulses to a resolution of two nanoseconds. Errors associated with the pulse stretchers are corrected by providing calibration data to both stretcher circuits, and recording start and stop counter values. Stretched initial and subsequent signals are combined with autocalibration data and supplied to an arithmetic logic unit to determine the time interval in nanoseconds between the pair of electrical pulses being measured. 3 figs.

  8. High resolution time interval counter

    DOE Patents [OSTI]

    Condreva, Kenneth J. (Livermore, CA)

    1994-01-01

    A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respective pulse stretchers of a second subsequent clock pulse. Output signals are thereafter supplied to a pair of start and stop counters operable to generate a pair of binary output words representative of the measure of the width of the pulses to a resolution of two nanoseconds. Errors associated with the pulse stretchers are corrected by providing calibration data to both stretcher circuits, and recording start and stop counter values. Stretched initial and subsequent signals are combined with autocalibration data and supplied to an arithmetic logic unit to determine the time interval in nanoseconds between the pair of electrical pulses being measured.

  9. Precision Timing Via Cerenkov Radiation,

    E-Print Network [OSTI]

    McDonald, Kirk

    ) beam splitter EG&G Ortec 9306 EG&G Ortec 9306 Microchannel­plate Photo Multiplier (MCP­PMT) 1 GHz Preamplifier Semiconductor Photo Diode 1 GHz Preamplifier EG&G Ortec 9307 EG&G Ortec 9307 ``Pico Timing Converter (TAC) 10 ns delay Stop Start Multi Channel Analyzer (MCA) beam splitter EG&G Ortec 9306 1 GHz

  10. The TESLA Time Projection Chamber

    E-Print Network [OSTI]

    Nabil Ghodbane

    2002-12-12

    A large Time Projection Chamber is proposed as part of the tracking system for a detector at the TESLA electron positron linear collider. Different ongoing R&D studies are reviewed, stressing progress made on a new type readout technique based on Micro-Pattern Gas Detectors.

  11. Theory of Earthquake Recurrence Times

    E-Print Network [OSTI]

    A. Saichev; D. Sornette

    2006-05-31

    The statistics of recurrence times in broad areas have been reported to obey universal scaling laws, both for single homogeneous regions (Corral, 2003) and when averaged over multiple regions (Bak et al.,2002). These unified scaling laws are characterized by intermediate power law asymptotics. On the other hand, Molchan (2005) has presented a mathematical proof that, if such a universal law exists, it is necessarily an exponential, in obvious contradiction with the data. First, we generalize Molchan's argument to show that an approximate unified law can be found which is compatible with the empirical observations when incorporating the impact of the Omori law of earthquake triggering. We then develop the full theory of the statistics of inter-event times in the framework of the ETAS model of triggered seismicity and show that the empirical observations can be fully explained. Our theoretical expression fits well the empirical statistics over the whole range of recurrence times, accounting for different regimes by using only the physics of triggering quantified by Omori's law. The description of the statistics of recurrence times over multiple regions requires an additional subtle statistical derivation that maps the fractal geometry of earthquake epicenters onto the distribution of the average seismic rates in multiple regions. This yields a prediction in excellent agreement with the empirical data for reasonable values of the fractal dimension $d \\approx 1.8$, the average clustering ratio $n \\approx 0.9$, and the productivity exponent $\\alpha \\approx 0.9$ times the $b$-value of the Gutenberg-Richter law.

  12. High resolution time interval meter

    DOE Patents [OSTI]

    Martin, A.D.

    1986-05-09

    Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

  13. Treating Time Travel Quantum Mechanically

    E-Print Network [OSTI]

    John-Mark A. Allen

    2014-10-10

    The fact that closed timelike curves (CTCs) are permitted by general relativity raises the question as to how quantum systems behave when time travel to the past occurs. Research into answering this question by utilising the quantum circuit formalism has given rise to two theories: Deutschian-CTCs (D-CTCs) and "postselected" CTCs (P-CTCs). In this paper the quantum circuit approach is thoroughly reviewed, and the strengths and shortcomings of D-CTCs and P-CTCs are presented in view of their non-linearity and time travel paradoxes. In particular, the "equivalent circuit model"---which aims to make equivalent predictions to D-CTCs, while avoiding some of the difficulties of the original theory---is shown to contain errors. The discussion of D-CTCs and P-CTCs is used to motivate an analysis of the features one might require of a theory of quantum time travel, following which two overlapping classes of new theories are identified. One such theory, the theory of "transition probability" CTCs (T-CTCs), is fully developed. The theory of T-CTCs is shown not to have certain undesirable features---such as time travel paradoxes, the ability to distinguish non-orthogonal states with certainty, and the ability to clone or delete arbitrary pure states---that are present with D-CTCs and P-CTCs. The problems with non-linear extensions to quantum mechanics are discussed in relation to the interpretation of these theories, and the physical motivations of all three theories are discussed and compared.

  14. The Parkes Pulsar Timing Array

    E-Print Network [OSTI]

    R. N. Manchester

    2007-11-12

    Detection and study of gravitational waves from astrophysical sources is a major goal of current astrophysics. Ground-based laser-interferometer systems such as LIGO and VIRGO are sensitive to gravitational waves with frequencies of order 100 Hz, whereas space-based systems such as LISA are sensitive in the millihertz regime. Precise timing observations of a sample of millisecond pulsars widely distributed on the sky have the potential to detect gravitational waves at nanohertz frequencies. Potential sources of such waves include binary super-massive black holes in the cores of galaxies, relic radiation from the inflationary era and oscillations of cosmic strings. The Parkes Pulsar Timing Array (PPTA) is an implementation of such a system in which 20 millisecond pulsars have been observed using the Parkes radio telescope at three frequencies at intervals of two -- three weeks for more than two years. Analysis of these data has been used to limit the gravitational wave background in our Galaxy and to constrain some models for its generation. The data have also been used to investigate fluctuations in the interstellar and Solar-wind electron density and have the potential to investigate the stability of terrestrial time standards and the accuracy of solar-system ephemerides.

  15. Timing the Parkes Multibeam Pulsars

    E-Print Network [OSTI]

    R. N. Manchester; A. G. Lyne; F. Camilo; V. M. Kaspi; I. H. Stairs; F. Crawford; D. J. Morris; J. F. Bell; N. D'Amico

    1999-11-17

    Measurement of accurate positions, pulse periods and period derivatives is an essential follow-up to any pulsar survey. The procedures being used to obtain timing parameters for the pulsars discovered in the Parkes multibeam pulsar survey are described. Completed solutions have been obtained so far for about 80 pulsars. They show that the survey is preferentially finding pulsars with higher than average surface dipole magnetic fields. Eight pulsars have been shown to be members of binary systems and some of the more interesting results relating to these are presented.

  16. Regression quantiles for time series

    E-Print Network [OSTI]

    Cai, Zongwu

    2002-02-01

    ~see, e+g+, Ibragimov and Linnik, 1971, p+ 316!+ Namely, partition REGRESSION QUANTILES FOR TIME SERIES 187 $1, + + + , n% into 2qn 1 1 subsets with large block of size r 5 rn and small block of size s 5 sn+ Set q 5 qn 5 ? n rn 1 sn? , (A.7) where {x...! are the standard Lindeberg–Feller conditions for asymptotic normality of Qn,1 for the independent setup+ Let us first establish ~A+8!+ To this effect, we define the large-block size rn by rn 5 {~nhn!102} and the small-block size sn 5 {~nhn!1020log n}+ Then, as n r...

  17. Real time infrared aerosol analyzer

    DOE Patents [OSTI]

    Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

    1990-01-01

    Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

  18. Time Scales in Spectator Fragmentation

    E-Print Network [OSTI]

    C. Schwarz; for the ALADIN collaboration

    2000-09-07

    Proton-proton correlations and correlations of p-alpha, d-alpha, and t-alpha from spectator decays following Au + Au collisions at 1000 AMeV have been measured with an highly efficient detector hodoscope. The constructed correlation functions indicate a moderate expansion and low breakup densities similar to assumptions made in statistical multifragmentation models. In agreement with a volume breakup rather short time scales were deduced employing directional cuts in proton-proton correlations. PACS numbers: 25.70.Pq, 21.65.+f, 25.70.Mn

  19. Time-Bounded Verification Joel Ouaknine1

    E-Print Network [OSTI]

    Worrell, James

    Time-Bounded Verification Jo¨el Ouaknine1 , Alexander Rabinovich2 , and James Worrell1 1 Oxford prob- lems for timed automata over time intervals of fixed, bounded length. One of our main results is that time-bounded language inclusion for timed automata is 2EXPSPACE-complete. We also investigate the satis

  20. Global Warming in Geologic Time

    SciTech Connect (OSTI)

    Archer, David

    2008-02-27

    The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere/ ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial/interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

  1. Global Warming in Geologic Time

    SciTech Connect (OSTI)

    David Archer

    2008-02-27

    The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere / ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial / interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

  2. Global Warming in Geologic Time

    ScienceCinema (OSTI)

    David Archer

    2010-01-08

    The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere / ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial / interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

  3. Real time analysis under EDS

    SciTech Connect (OSTI)

    Schneberk, D.

    1985-07-01

    This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this data includes: measures of particle density and velocity, partial pressures of residual gases, and overall measures of isotope enrichment. The analysis component supports a variety of real-time modeling tasks, a means for broadcasting data to other nodes, and a great degree of flexibility for tailoring computations to the exact needs of the process. A particular data base structure and program flow is common to all types of analysis. Key elements of the analysis component are: (1) a fast access data base which can configure all types of analysis, (2) a selected set of analysis routines, (3) a general purpose data manipulation and graphics package for the results of real time analysis. Each of these components are described with an emphasis upon how each contributes to overall system capability. 3 figs.

  4. Time Dependent Density Functional Theory An introduction

    E-Print Network [OSTI]

    Botti, Silvana

    Time Dependent Density Functional Theory An introduction Francesco Sottile LSI, Ecole Polytechnique (ETSF) Time Dependent Density Functional Theory Palaiseau, 7 February 2012 1 / 32 #12;Outline 1 Frontiers 4 Perspectives and Resources Francesco Sottile (ETSF) Time Dependent Density Functional Theory

  5. INVESTIGATION Genomic Background and Generation Time

    E-Print Network [OSTI]

    Lynch, Michael

    INVESTIGATION Genomic Background and Generation Time Influence Deleterious Mutation Rates variation is generated and how selection shapes mutation rates over evolutionary time requires knowledge, genomic background and generation time, on deleterious mutation in Daphnia pulicaria, a cyclically

  6. AUTOMATIC PROGRAM TIMING PROFILES WITH FTN4

    E-Print Network [OSTI]

    Friedman, Richard.

    2010-01-01

    September 22-25, 1980 AUTOMATIC PROGRAM TIMING PROFILES WITHW-7405-ENG-48 LBL-1l290 Automatic Program Timing ProfilesW-1405-ENG-48 LBL-11290 Automatic Program Timing Profiles

  7. Time Travel and the Reality of Spontaneity

    E-Print Network [OSTI]

    C. K. Raju

    2008-04-05

    Contrary to the informed consensus, time travel implies spontaneity (as distinct from chance) so that time travel can only be of the second kind.

  8. Time domain electromagnetic metal detectors

    SciTech Connect (OSTI)

    Hoekstra, P.

    1996-04-01

    This presentation focuses on illustrating by case histories the range of applications and limitations of time domain electromagnetic (TDEM) systems for buried metal detection. Advantages claimed for TDEM metal detectors are: independent of instrument response (Geonics EM61) to surrounding soil and rock type; simple anomaly shape; mitigation of interference by ambient electromagnetic noise; and responsive to both ferrous and non-ferrous metallic targets. The data in all case histories to be presented were acquired with the Geonics EM61 TDEM system. Case histories are a test bed site on Molokai, Hawaii; Fort Monroe, Virginia; and USDOE, Rocky Flats Plant. The present limitations of this technology are: discrimination capabilities in terms of type of ordnance, and depth of burial is limited, and ability of resolving targets with small metallic ambient needs to be improved.

  9. http://www.purdue.edu/discoverypark March 2012 Discovery Park Impact

    E-Print Network [OSTI]

    Holland, Jeffrey

    takes months to complete, increasing time-to-market, effort, and cost. INITIATIVE Microfluidic development time by 80% and costs by tens-of-thousands of dollars. This reduction in time accelerates data-on-a-chip (LoC) devices are assay specific and custom built for each experiment. Performing a new experiment

  10. http://www.purdue.edu/discoverypark March 2012-NT8 Discovery Park Impact

    E-Print Network [OSTI]

    Pittendrigh, Barry

    . This cycle takes months to complete, increasing time-to-market, effort, and cost. INITIATIVE Microfluidic development time by 80% and costs by tens-of-thousands of dollars. This reduction in time accelerates data lab-on-a-chip (LoC) devices are assay specific and custom built for each experiment. Performing a new

  11. Time change Almut E. D. Veraart

    E-Print Network [OSTI]

    Time change Almut E. D. Veraart CREATES University of Aarhus Aarhus Denmark +45 8942 2142 averaart 272595 winkel@stats.ox.ac.uk TimeChange8.tex ­ LaTeX2e Abstract The mathematical concept of time­changing continuous­time stochastic pro- cesses can be regarded as one of the standard tools for building financial

  12. Updatable Timed Automata Patricia Bouyer1

    E-Print Network [OSTI]

    Doyen, Laurent

    decidable and undecidable classes of updatable timed automata. We also study the expressive power classes of timed systems. 1 Introduction Since their introduction by Alur and Dill [AD90,AD94], timed automata are one of the most-studied and most-established models for real-time systems. Numerous works have

  13. Time Zone Information Compiled by John Case

    E-Print Network [OSTI]

    Case, John

    Deviations From Standard Time 1 The U.S. is on daylight saving time from the first Sunday in April @ 2am til the last Sunday in October @ 2am. Western Europe is on daylight saving time generally from the last Sunday designation. Additionally, it proclaims daylight saving time as does Europe. India's standard is at +05

  14. Timed CSP: A Retrospective Joel Ouaknine 1

    E-Print Network [OSTI]

    Ouaknine, Joël

    APC 2005 Timed CSP: A Retrospective Jo¨el Ouaknine 1 Oxford University Computing Laboratory, UK Timed CSP, from its inception nearly twenty years ago to very recent semantical and algorithmic developments. Key words: Process algebra, Timed CSP. Timed CSP was first proposed in 1986 by Reed and Roscoe

  15. A Concurrency-Preserving Translation from Time Petri Nets to Networks of Timed Automata

    E-Print Network [OSTI]

    Doyen, Laurent

    A Concurrency-Preserving Translation from Time Petri Nets to Networks of Timed Automata Sandie time Petri nets (TPN) [17] and networks of timed automata (NTA) [3]. These formalisms have different}@lsv.ens-cachan.fr Abstract--Real-time distributed systems may be modeled in different formalisms such as time Petri nets (TPN

  16. Time and Causation 1 Walter J Freeman Perception of time and causation through the

    E-Print Network [OSTI]

    Freeman, Walter J.

    Time and Causation 1 Walter J Freeman Perception of time and causation through the kinesthesia, kinesthesia, perception, time Abstract Perception is an intentional action through space in time by which. Perceived time differs from world time in ways that are determined by the neural mechanisms

  17. Time and Causation 1 Walter J Freeman Perception of time and causation through the

    E-Print Network [OSTI]

    Freeman, Walter J.

    Time and Causation 1 Walter J Freeman Perception of time and causation through the kinesthesia, perception, time Abstract Perception is an intentional action through space in time by which the finite brain. Perceived time differs from world time in ways that are determined by the neural mechanisms

  18. Time and Matter An International Colloquium on the Science of Time

    E-Print Network [OSTI]

    Time and Matter An International Colloquium on the Science of Time August 11 - 17, 2002 at Venice International University, Italy Topics: Precise measurements of time Arrow of time in classical and quantum physics Tunneling time and various paradoxa in quantum physics Matter, antimatter and microscopic time

  19. Timed AlternatingTime Temporal Logic # Thomas A. Henzinger 1 and Vinayak S. Prabhu 2

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    powerful options for updating the state of the game, advancing time, or blocking time. Second, we wish in order to specify real­time objectives for games played on timed structures. We define the semantics Timed games are a formal model for the synthesis of real­time systems [22, 20]. While much research e

  20. 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.

  1. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence.

  2. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-04-23

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. 7 figs.

  3. Did a Switch in Time Save Nine?

    E-Print Network [OSTI]

    Quinn, Kevin M.; Ho, Daniel E.

    2009-01-01

    Benjamin A. Kleinerman. 2002. “A Switch in Time Saves Nine:John W. 1969. “The Big Switch: Justice Roberts and theG. 2005. “When Did the ”Switch in Time” Actually Occur? :

  4. Graduate Program Time Limits and Work Schedules

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

    Time Limits and Work Schedules Graduate Program Time Limits and Work Schedules Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive...

  5. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Energy Research (PIER) California Energy Commission Beth Chambers Contract Manager Jamie Patterson (VSA) prototype to monitor system voltage conditions and provide real time dispatchers with reliabilityArnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real

  6. Space does not exist, so time can

    E-Print Network [OSTI]

    Fotini Markopoulou

    2009-09-10

    It is often said that in general relativity time does not exist. This is because the Einstein equations generate motion in time that is a symmetry of the theory, not true time evolution. In quantum gravity, the timelessness of general relativity clashes with time in quantum theory and leads to the ``problem of time'' which, in its various forms, is the main obstacle to a successful quantum theory of gravity. I argue that the problem of time is a paradox, stemming from an unstated faulty premise. Our faulty assumption is that space is real. I propose that what does not fundamentally exist is not time but space, geometry and gravity. The quantum theory of gravity will be spaceless, not timeless. If we are willing to throw out space, we can keep time and the trade is worth it.

  7. Detection Methods for Astronomical Time Series

    E-Print Network [OSTI]

    Coehlo, Nathan Kirk

    2010-01-01

    Time Series by Nathan Kirk Coehlo A dissertation submittedCopyright 2010 by Nathan Kirk Coehlo Abstract DetectionTime Series by Nathan Kirk Coehlo Doctor of Philosophy in

  8. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01

    for grid topology changes (implying online  security and Security Constrained Economic Dispatch (SCED) procedures.   Built upon GRID-grid, reliability, real?time operator tools, time synchronized phasor  measurements, voltage security.  

  9. Sandia Energy - Time-Resolved FTIR

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

    Time-Resolved FTIR Time-Resolved FTIRAshley Otero2015-10-28T02:31:27+00:00 Combustion chemistry involves many exothermic reactions, which produce hot molecules. For these...

  10. Can hedge funds time market liquidity?

    E-Print Network [OSTI]

    Cao, Charles

    We explore a new dimension of fund managers' timing ability by examining whether they can time market liquidity through adjusting their portfolios' market exposure as aggregate liquidity conditions change. Using a large ...

  11. VOLATILITY TIME AND PROPERTIES OF OPTION PRICES

    E-Print Network [OSTI]

    Janson, Svante

    VOLATILITY TIME AND PROPERTIES OF OPTION PRICES volatility time, to show convexity of option prices in the underlying asset if the contract function is convex as well as continuity and monotonicity of the option price in the volatility

  12. Each instant of time a new Universe

    E-Print Network [OSTI]

    Yakir Aharonov; Sandu Popescu; Jeff Tollaksen

    2013-05-07

    We present an alternative view of quantum evolution in which each moment of time is viewed as a new "universe" and time evolution is given by correlations between them.

  13. Time symmetry in wave function collapse models

    E-Print Network [OSTI]

    Daniel Bedingham

    2015-02-25

    A framework for wave function collapse models that is symmetric under time reversal is presented. Within this framework there are equivalent pictures of collapsing wave functions evolving in both time directions. The backwards-in-time Born rule can be broken by an initial condition on the Universe resulting in asymmetric behaviour. Similarly the forwards-in-time Born rule can in principle be broken by a final condition on the Universe.

  14. Convex Optimization: from Real-Time Embedded

    E-Print Network [OSTI]

    Convex Optimization: from Real-Time Embedded to Large-Scale Distributed Stephen Boyd Neal Parikh Lectures, UC Berkeley, 3/30/2015 1 #12;Outline Convex Optimization Real-Time Embedded Optimization Large-Scale Distributed Optimization Summary 2 #12;Outline Convex Optimization Real-Time Embedded Optimization Large

  15. Convex Optimization: from Real-Time Embedded

    E-Print Network [OSTI]

    Hall, Julian

    Convex Optimization: from Real-Time Embedded to Large-Scale Distributed Stephen Boyd Neal Parikh of Edinburgh, June 25 2014 1 #12;Outline Convex Optimization Real-Time Embedded Optimization Large-Scale Distributed Optimization Summary 2 #12;Outline Convex Optimization Real-Time Embedded Optimization Large

  16. Time Dependent Density Functional Theory An Introduction

    E-Print Network [OSTI]

    Botti, Silvana

    Time Dependent Density Functional Theory An Introduction Francesco Sottile Laboratoire des Solides) Belfast, 29 Jun 2007 Time Dependent Density Functional Theory Francesco Sottile #12;Intro Formalism Linear Response Formalism 3 TDDFT in practice: The ALDA: Achievements and Shortcomings 4 Resources Time

  17. Symbolic Verification of Timed Asynchronous Hardware Protocols

    E-Print Network [OSTI]

    Stevens, Ken

    of system level verification by applying symbolic model checking techniques to help mitigate the state constraints into verification models to prove timed behavioral correctness of systems employing timed protocol to model timing in asynchronous hardware protocols ­ a novel mapping of tim- ing into the verification flow

  18. Timed Automata with Observers under Energy Constraints

    E-Print Network [OSTI]

    Doyen, Laurent

    of schedules given an initial energy level of one. For one-clock priced timed automata both the lowerTimed Automata with Observers under Energy Constraints Patricia Bouyer Lab. Spécification et@lsv.ens-cachan.fr ABSTRACT In this paper we study one-clock priced timed automata in which prices can grow linearly ( p = k

  19. Business Time in the Foreign Exchange Markets

    E-Print Network [OSTI]

    Edinburgh, University of

    Business Time in the Foreign Exchange Markets Mark J L Orr Centre for Cognitive Science Edinburgh University June 1997 #12; Business Time in the Foreign Exchange Markets Mark J L Orr y Centre for Cognitive; Contents 1 Introduction 4 2 The Price Change Scaling Law 5 3 Business Time 7 4 The BZW Data 11 5 Volatility

  20. Finite-Time Stability of Discrete-Time Nonlinear Systems: Analysis and Design

    E-Print Network [OSTI]

    Finite-Time Stability of Discrete-Time Nonlinear Systems: Analysis and Design S. Mastellone, P. Dorato, C. T. Abdallah Abstract-- Finite-time stability of nonlinear discrete-time systems is studied we propose a new analysis result for fi- nite time stability of deterministic and stochastic discrete

  1. Time_Limit_Extension_Form.docx | Revised: 10/13/2014 Time Limit Extension Request Form

    E-Print Network [OSTI]

    Meyers, Steven D.

    Time_Limit_Extension_Form.docx | Revised: 10/13/2014 Time Limit Extension Request Form OFFICE on your request. PURPOSE The Time Limit Extension may be filed when a student nears the end of the time limitation for completion of the requirements for their degree but needs more time to complete the degree

  2. A Linear-Time Approach for Static Timing Analysis Covering All Process Corners

    E-Print Network [OSTI]

    Najm, Farid N.

    A Linear-Time Approach for Static Timing Analysis Covering All Process Corners Sari Onaissi into the timing analysis of a circuit. With the increase in the number of interesting process vari- ables process variations lead to circuit timing variability and a corresponding timing yield loss. Traditional

  3. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, T.E.

    1997-08-26

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. The sample signal in equivalent time is passed through an envelope detection circuit, formed of an absolute value circuit followed by a low pass filter, to convert the sample signal to a unipolar signal to eliminate effects of antenna misorientation. 8 figs.

  4. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1997-01-01

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. The sample signal in equivalent time is passed through an envelope detection circuit, formed of an absolute value circuit followed by a low pass filter, to convert the sample signal to a unipolar signal to eliminate effects of antenna misorientation.

  5. Relativity theory in time-space

    E-Print Network [OSTI]

    Ákos G. Horváth

    2014-11-05

    The concept of time-space defined in an earlier paper of the author is certain generalization of the so-called space-time. In this paper we introduce the concept of time-space manifold. In the homogeneous case, the time-space manifold is a differentiable manifold with such tangent spaces which have certain fixed time-space structure. We redefine the fundamental concepts of global relativity theory with respect to this general situation. We study the concepts of affine connection, parallel transport, curvature tensor and Einstein equation, respectively.

  6. The Collapse of Time: Decennial Anniversaries and the Experience of Time in the German Democratic Republic

    E-Print Network [OSTI]

    Nyberg, Linda M.

    2008-01-01

    and Theory 19.2 (1980); David Carr, “Place and Time: On the19.2 (2005): 260-290. Carr, David. “Place and Time: On the

  7. Time-Energy Costs of Quantum Measurements

    E-Print Network [OSTI]

    Chi-Hang Fred Fung; H. F. Chau

    2014-05-08

    Time and energy of quantum processes are a tradeoff against each other. We propose to ascribe to any given quantum process a time-energy cost to quantify how much computation it performs. Here, we analyze the time-energy costs for general quantum measurements, along a similar line as our previous work for quantum channels, and prove exact and lower bound formulae for the costs. We use these formulae to evaluate the efficiencies of actual measurement implementations. We find that one implementation for a Bell measurement is optimal in time-energy. We also analyze the time-energy cost for unambiguous state discrimination and find evidence that only a finite time-energy cost is needed to distinguish any number of states.

  8. Statistical criteria for characterizing irradiance time series.

    SciTech Connect (OSTI)

    Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

    2010-10-01

    We propose and examine several statistical criteria for characterizing time series of solar irradiance. Time series of irradiance are used in analyses that seek to quantify the performance of photovoltaic (PV) power systems over time. Time series of irradiance are either measured or are simulated using models. Simulations of irradiance are often calibrated to or generated from statistics for observed irradiance and simulations are validated by comparing the simulation output to the observed irradiance. Criteria used in this comparison should derive from the context of the analyses in which the simulated irradiance is to be used. We examine three statistics that characterize time series and their use as criteria for comparing time series. We demonstrate these statistics using observed irradiance data recorded in August 2007 in Las Vegas, Nevada, and in June 2009 in Albuquerque, New Mexico.

  9. Reactor control rod timing system. [LMFBR

    DOE Patents [OSTI]

    Wu, P.T.K.

    1980-03-18

    A fluid driven jet-edge whistle timing system is described for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  10. Time Reversal of Bose-Einstein Condensates

    SciTech Connect (OSTI)

    Martin, J.; Georgeot, B.; Shepelyansky, D. L. [Laboratoire de Physique Theorique, Universite de Toulouse III, CNRS, 31062 Toulouse (France)

    2008-08-15

    Using Gross-Pitaevskii equation, we study the time reversibility of Bose-Einstein condensates (BEC) in kicked optical lattices, showing that in the regime of quantum chaos, the dynamics can be inverted from explosion to collapse. The accuracy of time reversal decreases with the increase of atom interactions in BEC, until it is completely lost. Surprisingly, quantum chaos helps to restore time reversibility. These predictions can be tested with existing experimental setups.

  11. Halanay type inequalities on time scales

    E-Print Network [OSTI]

    Ad\\ivar, Murat

    2011-01-01

    This paper aims to introduce Halanay type inequalities on time scales. By means of these inequalities we derive new global stability conditions for nonlinear dynamic equations on time scales. Giving several examples we show that beside generalization and extension to q-difference case, our results also provide improvements for the existing theory regarding differential and difference inequalites, which are the most important particular cases of dynamic inequalities on time scales.

  12. Gauge Gravity and Space-Time

    E-Print Network [OSTI]

    Ning Wu

    2012-07-11

    When we discuss problems on gravity, we can not avoid some fundamental physical problems, such as space-time, inertia, and inertial reference frame. The goal of this paper is to discuss the logic system of gravity theory and the problems of space-time, inertia, and inertial reference frame. The goal of this paper is to set up the theory on space-time in gauge theory of gravity. Based on this theory, it is possible for human kind to manipulate physical space-time on earth, and produce a machine which can physically prolong human's lifetime.

  13. Time-resolved photometry of cataclysmic variables

    E-Print Network [OSTI]

    C. Papadaki; H. M. J. Boffin; J. Cuypers; V. Stanishev; Z. Kraicheva; V. Genkov

    2003-12-18

    We present time-resolved photometry of two cataclysmic variables whose CCD photometric observations were obtained with the 1m telescope at the South African Astronomical Observatory in October 2002 and August 2003 and with the 1m telescope at Hoher List in Germany. Concerning MCT 2347-3144 we detect for the first time a period of 6.65h. For V1193 Ori the 3.96 h periodicity has for the first time been confirmed through time-resolved photometry.

  14. Hyperbolic statics in space-time

    E-Print Network [OSTI]

    Dmitry Pavlov; Sergey Kokarev

    2014-12-11

    Based on the concept of material event as an elementary material source that is concentrated on metric sphere of zero radius --- light-cone of Minkowski space-time, we deduce the analog of Coulomb's law for hyperbolic space-time field universally acting between the events of space-time. Collective field that enables interaction of world lines of a pair of particles at rest contains a standard 3-dimensional Coulomb's part and logarithmic addendum. We've found that the Coulomb's part depends on a fine balance between causal and geometric space-time characteristics (the two regularizations concordance).

  15. Time reversal symmetry and collapse models

    E-Print Network [OSTI]

    Daniel Bedingham; Owen Maroney

    2015-02-24

    Collapse models are modifications of quantum theory where the wave function is treated as physically real and the collapse of the wave function is a physical process. This appears to introduce a time reversal asymmetry into the dynamics of the wave function since the collapses affect only the future state. This paper challenges this conclusion, showing that in three different examples of time asymmetries associated with collapse models, if the physically real part of the model can be reduced to the locations in space and time about which collapses occur, then such a model works both forward and backward in time, in each case satisfying the Born rule. Despite the apparent asymmetry of the collapse process, these models in fact have time reversal symmetry. Any physically observed time asymmetries that arise in such models are due to the asymmetric imposition of initial or final time boundary conditions, rather than from an inherent asymmetry in the dynamical law. This is the standard explanation of time asymmetric behaviour resulting from time symmetric laws.

  16. Development of Nonlinear SSI Time Domain Methodology

    Broader source: Energy.gov [DOE]

    Development of Nonlinear SSI Time Domain Methodology Justin Coleman, P.E. Nuclear Science and Technology Idaho National Laboratory October 22, 2014

  17. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01

    Energy Management System (SCADA/EMS). In the long term, theadvanced real time control. SCADA is a category of softwareequipment and conditions. SCADA systems include hardware and

  18. Optimal timing problems in environmental economics

    E-Print Network [OSTI]

    Pindyck, Robert S.

    2001-01-01

    Because of the uncertainties and irreversibilities that are often inherent in environmental degradation, its prevention, and its economic consequences, environmental policy design can involve important problems of timing. ...

  19. Time & Fitness-Dependent Hamiltonian Biomechanics

    E-Print Network [OSTI]

    Ivancevic, Tijana T

    2009-01-01

    In this paper we propose the time & fitness-dependent Hamiltonian form of human biomechanics, in which total mechanical + biochemical energy is not conserved. Starting with the Covariant Force Law, we first develop autonomous Hamiltonian biomechanics. Then we extend it using a powerful geometrical machinery consisting of fibre bundles, jet manifolds, polysymplectic geometry and Hamiltonian connections. In this way we derive time-dependent dissipative Hamiltonian equations and the fitness evolution equation for the general time & fitness-dependent human biomechanical system. Keywords: Human biomechanics, configuration bundle, Hamiltonian connections, jet manifolds, time & fitness-dependent dynamics

  20. San Pablo Avenue Pedestrian Signal Timing Optimization

    E-Print Network [OSTI]

    Nguyen, Ahn; Ragland, David R.

    2007-01-01

    Signals to Accommodate Pedestrian Travel. Road EngineeringM. Cynecki. A Review of Pedestrian Safety Research in theWalking Speeds for Pedestrian Clearance Timing Based on

  1. The Continuous Time Service Network Design Problem

    E-Print Network [OSTI]

    2015-01-02

    ... School of Industrial & Systems Engineering, Georgia Institute of Technology, Atlanta, GA ... Fast shipping times (and low cost) are critical to the success of.

  2. Discrete-Time Scheduling under Real-Time Constraints Eduard Cerny

    E-Print Network [OSTI]

    Aboulhamid, El Mostapha

    into a discrete- time relative schedule. Such a schedule serves as the basis for implementing a synchronous state-machine controller. Keywords: Timing diagrams, relative scheduling, real-time constraints, synchronous state machines that is suitable for synchronous system implementations. The input specification is in the form of timing diagrams

  3. A Real Time Operating System Survey What the heck is a Real Time system

    E-Print Network [OSTI]

    Groppi, Christopher

    A Real Time Operating System Survey John Ford 1 #12; What the heck is a Real Time system anyway.'' From POSIX 1003.1: ``Realtime in operating systems: the ability of the operating system to pro­ vide­Time Operating System) has to have a real­time kernel ffl Good documentation ffl Good device support ffl Good

  4. On time-reversal and space-time harmonic processes for Markovian quantum channels

    E-Print Network [OSTI]

    Francesco Ticozzi; Michele Pavon

    2009-04-29

    The time reversal of a completely-positive, nonequilibrium discrete-time quantum Markov evolution is derived via a suitable adjointness relation. Space-time harmonic processes are introduced for the forward and reverse-time transition mechanisms, and their role for relative entropy dynamics is discussed.

  5. Real Time Voice Transmission Darshana Shah Real Time Voice transmission over Wireless medium using

    E-Print Network [OSTI]

    Yu, Chansu

    to 300+ MHz Receiver #12;Real Time Voice Transmission Darshana Shah - 3 - LFTX -- DC-30 MHz TransmitterReal Time Voice Transmission Darshana Shah - 1 - Real Time Voice transmission over Wireless medium Yu 06/07/2009 #12;Real Time Voice Transmission Darshana Shah - 2 - Abstract My project is to transmit

  6. Time-varying Spectral Analysis in Neurophysiological Time Series Using Hilbert

    E-Print Network [OSTI]

    Whitcher, Brandon

    ability to detect time-varying coherence and phase properties. Key words: Coherence, electromyographic

  7. Capacity-Optimal Training for Space-Time Modulation over a Time-Varying Channel

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    Capacity-Optimal Training for Space-Time Modulation over a Time-Varying Channel Christian B. Peel-autocorrelation function for time-varying MIMO channels, we find a lower bound on capacity for trained modulation, and find for differential unitary space-time modulation is discussed and compared with that for trained modulation. We

  8. Real-Time Computerized Annotation of Pictures Real-Time Computerized Annotation of Pictures

    E-Print Network [OSTI]

    Li, Jia

    Real-Time Computerized Annotation of Pictures Real-Time Computerized Annotation of Pictures Jia Li. Wang alipr.com #12;Real-Time Computerized Annotation of Pictures How Visible Are Web Images? Keukenhof photos Jia Li, James Z. Wang alipr.com #12;Real-Time Computerized Annotation of Pictures ALIPR: Automatic

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Jacquet, Stéphan

    in indications of climatic changes, e.g. glacial melting in the Antarctic, where an increased dominance of cryp- tophytes was used as a sign of an increased input of melting water into the coastal regions of the Southern

  10. SERS internship Fall 1992--Spring 1993: Abstract and research papers

    SciTech Connect (OSTI)

    Not Available

    1993-08-05

    This report contains the abstracts and research papers by students on a variety of topics in engineering, genetics, solid state physics, thermonuclear energy, astrophysics, and other science related topics.

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sotka, Erik

    and management require knowledge of sources. First, do most invasions have single or multi- ple sources? Multiple oxidase subunit 1 (COI) and nuclear elongation factor 1 alpha (EF1) genotypes of native and introduced pop

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    on the journeys of birds and of ocean currents on the movement of marine animals, especially as regards larval entire ocean basins by currents (Musick & Limpus 1997), but adult turtles could also be affected: pluschi@biologia.unipi.it Influence of ocean currents on long-distance movement of leatherback sea turtles

  13. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Lohmann, Kenneth J.

    Published June 21 INTRODUCTION Currents are a fundamental feature in the oceans and have a number was often simply a rudimentary understanding of the main ocean currents (Schel- tema 1966, Kleckner & Mc.fossette@gmail.com A biologist's guide to assessing ocean currents: a review Sabrina Fossette1,*, Nathan F. Putman2,3 , Kenneth J

  14. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Teixeira, Sara

    of the flowering season and higher seed production was observed. Both the negative effect of clam harvesting on Z.int-res.com*Email: aalexandre@ualg.pt Effects of clam harvesting on sexual reproduction of the seagrass Zostera noltii Ana season. The effects of clam harvesting on the sexual reproduction of Z. noltii were in- vestigated using

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pringle, James "Jamie"

    Department of Zoology, University of New Hampshire, 46 College Road, Durham, New Hampshire 03824, USA 2 Department of Earth Sciences, and the Institute of Earth, Oceans, and Space, University of New Hampshire, Durham, New Hampshire 03824, USA ABSTRACT: Increasing globalization has spread invasive marine organisms

  16. Slicing behavior specification of components* Ondej Ser1

    E-Print Network [OSTI]

    Database encapsulates accounts with prepaid internet connection. The Token component is a dynamically created entity

  17. Los años ochenta en Colombia: El derecho a ser distintos

    E-Print Network [OSTI]

    Gonzá lez Cajiao, Fernando

    1992-04-01

    una sede propia en el barrio la Candelaria en 1991. Hasta el momento ha presentado allí dos obras: Cenizas sobre el mar y Ascensor para tres, ambas de José Assad. Este autor había hecho su debut dramaturgia) en la década anterior con Biófilo... una sede propia en el barrio la Candelaria en 1991. Hasta el momento ha presentado allí dos obras: Cenizas sobre el mar y Ascensor para tres, ambas de José Assad. Este autor había hecho su debut dramaturgia) en la década anterior con Biófilo...

  18. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    with increasing currents, predicting that net energy gain per dive cycle will reach zero and become unprofitable. Strategies which maximise net energy gains are expected to be favoured by natural selection (Schoener 1971 energetics and underwater dive data to quan- titatively model net energy gain per dive cycle as a function

  19. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Brest, Université de

    from the cool © Inter-Research 2003 · www.int-res.com*Email: mfiala@obs-banyuls.fr Mesoscale surface, 29280 Plouzané, France ABSTRACT: A mesoscale study was conducted in January and February 1999

  20. MARINE ECOLOGY PROGRESS SERIES Mar. Ecol. Prog. Ser.

    E-Print Network [OSTI]

    Jochem, Frank J.

    , the oligotrophiccentral Arabian Sea and the shelf edge off Pakistan)in the Arabian Sea during the inter-monsoonperiod 1987 Sea and the shelf edge off Pakistan. Material and methods. Sampling comprised a 14 d drift study off the central Arabian Sea at 18' N, 65' E and a drift study (May 22 to June 2) at the shelf edge off Pakistan

  1. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    , most forage fishes are planktivorous and vary in energy density (Iverson et al. 2002, Eder & Lewis 2005) changes with species composition. Anderson & Piatt (1999) demon- strated that in the Gulf of Alaska (GOA chalcogramma Matthew T. Wilson*, Christina M. Jump, Janet T. Duffy-Anderson Alaska Fisheries Science Center

  2. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    (Robert- son & Goudie 1999), where they feed on benthic inver- tebrates (Goudie & Ankney 19862 , Kimberly A. Trust3 , Brenda E. Ballachey1 , Thomas A. Dean4 , Stephen C. Jewett5 , Charles E. O G62, Anchorage, Alaska 99501, USA 4 Coastal Resources Associates, Inc., 1185 Park Center Drive

  3. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    White, Angelicque

    with colony migration to the average depth of the phosphocline, followed by return to the upper euphotic zone bidirectional migrations in the vertical plane of the water column. As is common for many cyanobacteria of vertical migration by Trichodesmium colonies in a stratified oligotrophic oceanic system such as the North

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hinch, Scott G.

    and migration depth of salmon in both marine and fresh water. Ocean migrating sockeye salmon O. nerka bound 55 tagged fish revealed that swim speed and depth varied among migratory locales. Migration Published January 27 INTRODUCTION Migration is defined as the synchronous, direc- tional, long

  5. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    -ocean migration, along-shore © Inter-Research 2003 · www.int-res.com*Email: g.hays@swan.ac.uk NOTE Satellite: 305­309, 2003 migration and residence in coastal areas (presumably feeding home-ranges) (Papi et al. 1997, Luschi et al. 1998, Nichols et al. 2000). While the primary original objective of these studies

  6. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Emslie, Steve

    behavior and diet of the sexually size-dimorphic blue-footed booby Sula nebouxii (BFB) breeding on Isla about the vertical distribution of their main prey, and compare the BFB's foraging behavior

  7. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Yahel, Gitai

    fixed carbon and biogeochemically important elements such as N, P, Fe, and Si (Hedges & Keil 1995). Therefore, processes controlling mass © Inter-Research 2008 · www.int-res.com**Email: yahel of Biology, University of Victoria, PO Box 3020, Victoria, British Columbia V8W 3N5, Canada 2 VENUS

  8. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Boyce, C. Kevin

    often come from studies from similar climate zones and even from within single bio- geographic provinces environments (Wilson 1996). In beetles, for example, C/NC ratios vary among climatic zones (Gaston et al. 1992) and among islands with different histories, sizes and climates (Brinck 1948, Becker 1975, 1992). Gastropods

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Adkins, Jess F.

    3 , Nick C. Wilson4 , Jess Adkins5 1 CSIRO Climate Adaptation Flagship, GPO Box 1538, Hobart and calcite) in the skeletons, shells and tests of marine taxa (Orr et al. 2005, Moy et al. 2009), including, Tasmania 7001, Australia 2 CSIRO Wealth from Oceans Flagship and Antarctic Climate and Ecosystem Co

  10. Controlled assembly of SERS substrates templated by colloidal crystal films

    E-Print Network [OSTI]

    Velev, Orlin D.

    ferritin proteins, droplet microfluidics and colloidal assembly from compressed carbon dioxide. His Ph, potential for remote sampling through fiber optics, and capability for detection of analytes in aqueous

  11. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Nielsen, Karina J.

    INTRODUCTION Coastal oceans are among the most productive ecosystems of the world (Lubchenco et al. 1995, Ric, and the lowest at Quintay. Analyses of wind data and surface temperature, and inspection of Advanced Very High offshore and over larger spatial scales, chl a concentrations were signifi- cantly lower at the coldest

  12. Compositions, devices and methods for SERS and LSPR

    SciTech Connect (OSTI)

    Van Duyne, Richard P; Zhang, Xiaoyu; Zhao, Jing; Whitney, Alyson V; Elam, Jeffrey W; Schatz, George C; Stair, Peter C; Zou, Shengli; Young, Matthew; Lyandres, Olga

    2014-01-14

    The present invention relates to compositions, devices and methods for detecting microorganisms (e.g., anthrax). In particular, the present invention provides portable, surface-enhanced Raman biosensors, and associated substrates, and methods of using the same, for use in rapidly detecting and identifying microorganisms (e.g., anthrax).

  13. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sponaugle, Su

    , the magnitude of pulses was stochastic, with some variability related to the passage of mesoscale frontal eddies

  14. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sponaugle, Su

    of 28.5°C) or the interference of mesoscale advection processes. When 4 cohorts that settled during the passage of mesoscale eddies were omitted from the analysis, 61% of the varia- tion in recruitment due to mesoscale oceanographic circulation. Photos: Evan D'Alessandro OPENPEN ACCESSCCESS #12;Mar Ecol

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Pineda, Jesús

    California, Mexico 3 Biology Department, MS-34, Woods Hole Oceanographic Institution, Woods Hole in the Bay of Todos Santos, northern Baja California, Mexico. Settlement of the intertidal barnacles wind speed and direction data were acquired from a nearby site. We identified 12 settlement pulses

  16. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Turner, Monica G.

    Published March 31 INTRODUCTION Global warming poses a special risk to organisms with unique thermal requirements in each life stage because these required thermal conditions may become geographically- nandez et al. 2007, Mazaris et al. 2009, Witherington et al. 2011), and pollution (Barreiros & Barcelos

  17. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Hays, Graeme

    Sciences, Institute of Environmental Sustainability, University of Wales Swansea, Singleton Park, Swansea of conventional ship-based techniques. KEY WORDS: Aerial surveys · Gelatinous zooplankton · Jellyfish blooms

  18. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    photosynthesis and stratification of the water column. Thus, it is widely accepted that the spring bloom propagates from low to high latitude after the establishment of seasonal thermal stratifica- tion. However for water stratification and lead to spring blooms. For example, surface freshening by river runoff

  19. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Smith, Jennifer E.

    Published October 28 INTRODUCTION As anthropogenic carbon emissions continue to rise annually, the buffering, the rise in dis- solved CO2 may release photoautotrophs from car- bon limitation, for algae lacking carbon concentrat- ing mechanisms (CCMs; Hurd et al. 2009), thereby enhancing growth. Therefore, carbon emissions

  20. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Aronson, Richard B.

    and bio- logical gradients at a variety of scales and hierarchical levels. Vertical gradients in predation, disjunct patches -- can © Inter-Research 2007 · www.int-res.com*Email: rmoody@disl.org Trophic

  1. A mis padres por ser un apoyo constante

    E-Print Network [OSTI]

    Pantrigo Fernández, Juan José

    jerarqu´ia de clases est´a basada en la orientaci´on a objetos, por lo que son construcciones modulares f

  2. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Falkowski, Paul G.

    @marine.rutgers.edu FEATURE ARTICLE Effects of phytoplankton physiology on export flux L. Alex Kahl1, 2,*, Assaf Vardi2 of a bloom of the diatom Thalassiosira pseudonana. The spatially weighted mean turbulence kinetic energy export flux model shows that carbon export can be increased by at least 2-fold compared to simulations

  3. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    exudates produced by bacteria and microalgae. For the micro- bes that produce them, these polysaccharide exopolymeric secretions (EPS) are carbohydrate-enriched polymers produced by microalgae and bacteria that bind

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    McGlathery, Karen

    enriched groundwater, and these support, in part, the high production of benthic macroalgae and microalgae, dark uptake by benthic microalgae, and immobilization by heterotrophic bacteria. In the absence of dark uptake of NH4 + by benthic microalgae, potential nitrification calculated as the dif- ference between

  5. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sorin, Eric J.

    (Martin 2004). Recent advances in our understanding of adult white shark movements and habitat utilization that adult white sharks made large-scale pelagic movements from the coastal waters of California- fornia, Mexico. Young-of-the-year sharks remained south of Point Conception whereas one 3 yr old shark

  6. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Reidenbach, Matthew A.

    to drag by the canopy leads to the reduction in resuspension; however, reduced resuspension and increased by seagrasses and seagrass epiphytes confirm that seagrass meadows buffer against sedi- ment resuspension resuspension Resale or republication not permitted without written consent of the publisher Contribution

  7. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Marinov, Irina

    and carbon sequestration Anand Gnanadesikan1,*, Irina Marinov2 1 Geophysical Fluid Dynamics Laboratory: The question of whether ocean iron fertilization (OIF) can yield verifiable carbon sequestration is often cast WORDS: Ocean iron fertilization · Preformed nutrients · Carbon sequestration Resale or republication

  8. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    deYoung, Brad

    dispersal is critical for the establishment and maintenance of adult populations. Meroplanktonic larvae can. Using a pump, we collected plankton samples at 6 depths (3, 6, 9, 12, 18 and 24 m), over a 36 and a 26 h

  9. Surface-enhanced Raman scattering (SERS) dosimeter and probe

    DOE Patents [OSTI]

    Vo-Dinh, T.

    1995-03-21

    A dosimeter and probe for measuring exposure to chemical and biological compounds is disclosed. The dosimeter or probe includes a collector which may be analyzed by surface-enhanced Raman spectroscopy. The collector comprises a surface-enhanced Raman scattering-active material having a coating applied thereto to improve the adsorption properties of the collector. The collector may also be used in automated sequential devices, in probe array devices. 10 figures.

  10. Surface-enhanced Raman scattering (SERS) dosimeter and probe

    DOE Patents [OSTI]

    Vo-Dinh, Tuan (Knoxville, TN)

    1995-01-01

    A dosimeter and probe for measuring exposure to chemical and biological compounds is disclosed. The dosimeter or probe includes a collector which may be analyzed by surface-enhanced Raman spectroscopy. The collector comprises a surface-enhanced Raman scattering-active material having a coating applied thereto to improve the adsorption properties of the collector. The collector may also be used in automated sequential devises, in probe array devices.

  11. ¿Qué significa ser mujer indígena en la contemporaneidad?

    E-Print Network [OSTI]

    De la Torre Amaguaña, Luz María

    2010-01-01

    en la contemporaneidad? Luz María De la Torre Amaguañaindígena, o, runa warmi. Luz María De la Torre AmaguañaCA: Stanford UP, De la Torre, Luz María.Un universo femenino

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Duffy, J. Emmett

    microalgae that fuel food webs and a shelter for inver- tebrates and fishes that reach substantially greater on earth (Duarte & Cebrián 1996), and their provision of nursery areas for juvenile stages of commercially

  13. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Cavanaugh, Kyle

    Earth Research Institute, 2 Department of Geography, and 3 Marine Science Institute, University regions were related to wave disturbance, while kelp dynamics in sheltered regions tracked sea surface

  14. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Shull, David H.

    of deposit-feeder gut passage and fecal pellet encapsulation on germination of dinoflagellate resting cysts A. Kremp1, 3,*, D. H. Shull2 , D. M. Anderson1 1 Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA 2 Department of Environmental Sciences, Western Washington

  15. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Kramer, Donald L.

    , Barbados ABSTRACT: Studies of coral reef fish recruitment have focused more on factors influencing settlement units in Barbados (West Indies). We collected concurrent data on 3 settlement- associated

  16. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Kramer, Donald L.

    patterns in the recruitment of coral-reef fishes in Barbados Henri Vallès1,*, Donald L. Kramer1 , Wayne Campus, University Drive, Cave Hill, St. Michael, Barbados (West Indies) ABSTRACT: We monitored of the west coast of Barbados, using benthic standard monitoring units of recruitment of fishes (SMURFs

  17. Watching individual molecules flex within lipid membranes using SERS

    E-Print Network [OSTI]

    Taylor, Richard W.; Benz, Felix; Sigle, Daniel O.; Bowman, Richard W.; Bao, Peng; Roth, Johannes S.; Heath, George R.; Evans, Stephen D.; Baumberg, Jeremy J.

    2014-08-12

    , with estimates that in adenine molecules 10% bond contraction yields a 5 cm21 shift15,25,33. This flexing of the lipid mole- cules within the probed gap thus causes both amplitude and fre- quency fluctuations. Conventional measurements average over all... . & Levin, I. W. Hydrocarbon chain trans-gauche isomerization in phospholipid bilayer gel assemblies. Biochemistry 1, 642–647 (2001). 28. Bunow, R. & Levin,W. Raman spectra and vibrational assignments for deuterated membrane lipids 1,2-Dipalmitoyl...

  18. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Oviatt, Candace

    disadvantage of the 14 C technique is the lack of measurement and estimation of gross or net photosynthesis:1637­1670) models for estimating productivity by variable fluorescence were compared, and agreed very well with an r and bacteria can grow on the walls of the container creating an artificial growth condition (Carpenter & Lively

  19. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Borges, Rita

    a fascinating mystery. The dio- ecious seagrass Cymodocea nodosa in the Canary Islands is a particularly: The seagrass Cymodocea nodosa forms a unique community in the Canary Islands, where it is classified from 10 meadows in the 4 main Canary Islands with 2 Iberian sites (Atlantic and Mediterranean) using

  20. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Rohs, Remo

    -scale anthropogenic influences may also play a role. Ocean acidification (high pCO2/low pH), green- house warming marine environment. KEY WORDS: Climate change · CO2 · Ocean acidification · Temperature · Stratification cycle. The atmospheric par- tial pressure of CO2 (pCO2) has risen by >30% due to the burning of fossil

  1. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Aksnes, Dag L.

    are a ubiquitous feature of the oceans. The waves are formed by variable wind stress and the actions of tides and currents on the ocean bottoms and continental margins (Garrett & Munk 1979). Several effects of internal in light penetration through the turbid surface layer of the sea. Illustration: Hege Vestheim OPENPEN

  2. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Turner, Monica G.

    ). As the edge to peri- meter ratio increases during fragmentation (Forman 1995), edge characteristics penetrate, University of Puerto Rico, Mayagüez Campus, PO Box 908, Lajas, Puerto Rico 00667, USA 2 NOAA, National Ocean

  3. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Rooker, Jay R.

    to total primary pro- duction, biogeochemical cycling and global fishery yields (Pauly & Christensen 1995 informa- tion on energy flow and food web structure (Lindeman et al. 2000). Unfortunately, information mixing model indicated that the 78% of organic matter supplied to consumers (pooled across taxa

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Benoit-Bird, Kelly J.

    in 1976. Fish abundance surveys via active acoustics are presently a standard stock assessment tool (Mac consent of the publisher Contribution to the Theme Section `Acoustics in marine ecology' OPENPEN

  5. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Poulin, Robert

    .thieltges@otago.ac.nz Production of marine trematode cercariae: a potentially overlooked path of energy flow in benthic systems to the flow of matter and energy in some other way. For example, parasites of infected prey may 14, 8200 Aarhus N, Denmark 5 Department of Biological Sciences, University of the Pacific, Stockton

  6. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Borges, Rita

    INTRODUCTION The Atlantic SW coast of the Iberian Peninsula is a biogeographical transition zone where many on marine genetic biodiversity along the SW Iberian Peninsula are poorly understood. We addressed diversity and differen- tiation for all existing 8 populations from NW Spain (Ria de Vigo) to SW Spain

  7. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    & Associates, 983 University Ave., Bldg D, Los Gatos, California 95032, USA 2 Department of Fisheries

  8. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    . Harvey & Associates, 983 University Avenue, Bldg. D, Los Gatos, California 95032, USA ABSTRACT: Animals

  9. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Koehl, Mimi

    .int-res.com*Email: cnidaria@berkeley.edu mFEATURE ARTICLE Individual-based model of larval transport to coral reefs, University of California, 3060 Valley Life Sciences Building, Berkeley, California 94720-3140, USA 2, Palo Alto, California 94305-4020, USA 3 Kewalo Marine Laboratory, University of Hawaii, 41 Ahui Street

  10. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Benoit-Bird, Kelly J.

    Published November 18 INTRODUCTION In coastal upwelling regions, wind-driven upwelling brings nutrient or oceanic biomes (Huyer 1983). In the major coastal upwelling regions of the world, small pelagic schooling Administration Building, Corvallis, Oregon 97331, USA ABSTRACT: Fish schools containing Pacific sardine Sardinops

  11. SERS internship spring 1996 abstracts and research papers

    SciTech Connect (OSTI)

    Williams, B.

    1996-07-01

    This is the student symposium for the Science & Engineering Research Semester, May 2-3, 1996. A variety of topics are covered.

  12. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    Sorin, Eric J.

    important ecological functions such as the transport of energy and nutrients (Irlandi & Crawford 1997 is important for maintaining community structure, but data on the degree to which animals efficiently move acoustic telemetry, measured their ability to home back to their estuary of capture. Individu- als from all

  13. A SERS Method for Handheld Portable Raman - Energy Innovation Portal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve Lithium-Ion Batteries PrintA New SolarA Present . .A Review ofA Find

  14. Superhydrophobic analyte concentration utilizing colloid-pillar array SERS

    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 NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatusand carbon(Journal Article) |

  15. PAPER www.rsc.org/loc | Lab on a Chip Open micro-fluidic system for atomic force microscopy-guided in situ

    E-Print Network [OSTI]

    Photosynthesis in plant cells is a ubiquitous natural solar energy conversion process. Light energy is captured (but also sulfate and nitrite reduction).1 This process is very similar to the energy process of solar developed in our laboratory for in situ sub-cellular probing of electrochemical phenomena in living plant

  16. , 20140502, published 13 August 20142812014Proc. R. Soc. B Glenn Yannic, Loc Pellissier, Mal Le Corre, Christian Dussault, Louis Bernatchez and Steeve D.

    E-Print Network [OSTI]

    Bernatchez, Louis

    ´decine, Que´bec, Que´bec, Canada G1V 0A6 2 Institut de Biologie Inte´grative et des Syste`mes (IBIS), Universite´ Laval, Pavillon Charles-Euge`ne-Marchand, Que´bec, Que´bec, Canada G1V 0A6 3 Department'Environnement, de la Faune et des Parcs du Que´bec, 880 chemin Sainte-Foy, Que´bec, Que´bec, Canada G1S 4X4

  17. PAPER www.rsc.org/loc | Lab on a Chip Open micro-fluidic system for atomic force microscopy-guided in situ

    E-Print Network [OSTI]

    by light harvesting complexes, which funnel that energy into the reaction centers of the photosynthetic electron transport chain, causing a charge separation that provides the driving force to split water cells and has the potential to be exploited by direct extraction of energetic electrons from

  18. Analysis of the kinetic slowing down during carbonation of CaO by CO2 Lydie Rouchon, Loc Favergeon, Michle Pijolat

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ,5], chemical heat pump [6-9], energy's storage [10-11], reaction integrated gasification process for H2 cause of climate change [1]. So, decrease of CO2 emitted by large industrial combustion sources or power at an industrial scale [3]. CaO (s) + CO2 (g) CaCO3 (s) (R1) This carbonation reaction has been studied from

  19. How Time Works in Quantum Systems: Overview of time ordering and time correlation in weakly perturbed atomic collisions and in strongly perturbed qubits

    E-Print Network [OSTI]

    J. H. McGuire; L. Kaplan; Kh. Kh. Shakov; A. Chalastaras; A. M. Smith; A. Godunov; H. Schmidt-Böcking; D. Uskov

    2005-12-29

    Time ordering may be defined by first defining the limit of no time ordering (NTO) in terms of a time average of an external interaction, V(t). Previously, time correlation was defined in terms of a similar limit called the independent time approximation (ITA). Experimental evidence for time correlation has not yet been distinguished from experimental evidence for time ordering.

  20. Continuous time random walk models for fractional space-time diffusion equations

    E-Print Network [OSTI]

    Sabir Umarov

    2014-09-14

    In this paper continuous time random walk models approximating fractional space-time diffusion processes are studied. Stochastic processes associated with the considered equations represent time-changed processes, where the time-change process is a L\\'evy's stable subordinator with the stability index $\\beta \\in (0,1).$ In the parer the convergence of constructed CTRWs to time-changed processes associated with the corresponding fractional diffusion equations are proved using a new analytic method.

  1. Gravity in Complex Hermitian Space-Time

    E-Print Network [OSTI]

    Ali H. Chamseddine

    2006-10-09

    A generalized theory unifying gravity with electromagnetism was proposed by Einstein in 1945. He considered a Hermitian metric on a real space-time. In this work we review Einstein's idea and generalize it further to consider gravity in a complex Hermitian space-time.

  2. On the nature of cosmological time

    E-Print Network [OSTI]

    Magain, Pierre

    2015-01-01

    Time is a parameter playing a central role in our most fundamental modeling of natural laws. Relativity theory shows that the comparison of times measured by different clocks depends on their relative motions and on the strength of the gravitational field in which they are embedded. In standard cosmology, the time parameter is the one measured by fundamental clocks, i.e. clocks at rest with respect to the expanding space. This proper time is assumed to flow at a constant rate throughout the whole history of the Universe. We make the alternative hypothesis that the rate at which cosmological time flows depends on the dynamical state of the Universe. In thermodynamics, the arrow of time is strongly related to the second law, which states that the entropy of an isolated system will always increase with time or, at best, stay constant. Hence, we assume that time measured by fundamental clocks is proportional to the entropy of the region of the Universe that is causally connected to them. Under that simple assumpt...

  3. Integrated method for chaotic time series analysis

    DOE Patents [OSTI]

    Hively, L.M.; Ng, E.G.

    1998-09-29

    Methods and apparatus for automatically detecting differences between similar but different states in a nonlinear process monitor nonlinear data are disclosed. Steps include: acquiring the data; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis; obtaining time serial trends in the nonlinear measures; and determining by comparison whether differences between similar but different states are indicated. 8 figs.

  4. Time Fractional Formalism: Classical and Quantum Phenomena

    E-Print Network [OSTI]

    Hosein Nasrolahpour

    2012-03-18

    In this review, we present some fundamental classical and quantum phenomena in view of time fractional formalism. Time fractional formalism is a very useful tool in describing systems with memory and delay. We hope that this study can provide a deeper understanding of the physical interpretations of fractional derivative.

  5. Response time distributions via reversed processes

    E-Print Network [OSTI]

    Imperial College, London

    Response time distributions via reversed processes Peter G. Harrison Maria G. Vigliotti Abstract in both the forward and reversed processes. There- fore if the reversed process is known, each node-sojourn time can be taken from either process. In particular, the reversed process can be used for the first

  6. Light gas gun with reduced timing jitter

    DOE Patents [OSTI]

    Laabs, G.W.; Funk, D.J.; Asay, B.W.

    1998-06-09

    Gas gun with reduced timing jitter is disclosed. A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved and free the projectile. 4 figs.

  7. Light gas gun with reduced timing jitter

    DOE Patents [OSTI]

    Laabs, Gary W. (Los Alamos, NM); Funk, David J. (Los Alamos, NM); Asay, Blaine W. (Los Alamos, NM)

    1998-01-01

    Gas gun with reduced timing jitter. A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved and free the projectile.

  8. TimeVariable Photo-Evaporation of

    E-Print Network [OSTI]

    Throop, Henry

    TimeVariable Photo-Evaporation of Protoplanetary Disks Henry Throop (SwRI) John Bally (U. Colorado) #12;Takeaway: Photo-evaporation alters the disk structure in essentially unpredictable ways, because for disks formed at the same time in the same cluster. #12;30 Doradus: 100+ O/B stars Photo

  9. Automatic Verification of Multiqueue Discrete Timed Automata

    E-Print Network [OSTI]

    Dang, Zhe

    become a useful model to investigate the verification of real­ time systems and have been extensively studied. The expressive power of TA has many limitations in modeling, since many real­time systems. The MQDTA model can be used to specify and verify various systems with unbounded queues, such as a real

  10. Practical reporting times for environmental samples

    SciTech Connect (OSTI)

    Bayne, C.K.; Schmoyer, D.D.; Jenkins, R.A.

    1993-02-01

    Preanalytical holding times for environmental samples are specified because chemical and physical characteristics may change between sampling and chemical analysis. For example, the Federal Register prescribes a preanalytical holding time of 14 days for volatile organic compounds in soil stored at 4{degrees}C. The American Society for Testing Materials (ASTM) uses a more technical definition that the preanalytical holding time is the day when the analyte concentration for an environmental sample falls below the lower 99% confidence interval on the analyte concentration at day zero. This study reviews various holding time definitions and suggest a new preanalytical holding time approach using acceptable error rates for measuring an environmental analyte. This practical reporting time (PRT) approach has been applied to nineteen volatile organic compounds and four explosives in three environmental soil samples. A PRT nomograph of error rates has been developed to estimate the consequences of missing a preanalytical holding time. This nomograph can be applied to a large class of analytes with concentrations that decay linearly or exponentially with time regardless of sample matrices and storage conditions.

  11. Integrated method for chaotic time series analysis

    DOE Patents [OSTI]

    Hively, Lee M. (Philadelphia, TN); Ng, Esmond G. (Concord, TN)

    1998-01-01

    Methods and apparatus for automatically detecting differences between similar but different states in a nonlinear process monitor nonlinear data. Steps include: acquiring the data; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis; obtaining time serial trends in the nonlinear measures; and determining by comparison whether differences between similar but different states are indicated.

  12. Multivariate Time Series Forecasting in Incomplete Environments

    E-Print Network [OSTI]

    Roberts, Stephen

    Multivariate Time Series Forecasting in Incomplete Environments Technical Report PARG 08-03 Seung of Oxford December 2008 #12;Seung Min Lee and Stephen J. Roberts Technical Report PARG 08-03 Multivariate missing observations and forecasting future values in incomplete multivariate time series data. We study

  13. Compact discrete-time chaos generator circuit

    E-Print Network [OSTI]

    Dudek, Piotr

    Compact discrete-time chaos generator circuit P. Dudek and V.D. Juncu A three-transistor CMOS circuit is presented, with adjustable nonlinear characteristics, which can be used as a map that generates discrete-time chaotic signals. A method of constructing a chaos generator using two map circuits is also

  14. Count-doubling time safety circuit

    DOE Patents [OSTI]

    Rusch, Gordon K. (Downers Grove, IL); Keefe, Donald J. (Lemont, IL); McDowell, William P. (Downers Grove, IL)

    1981-01-01

    There is provided a nuclear reactor count-factor-increase time monitoring circuit which includes a pulse-type neutron detector, and means for counting the number of detected pulses during specific time periods. Counts are compared and the comparison is utilized to develop a reactor scram signal, if necessary.

  15. Time-bin entangled photon holes

    E-Print Network [OSTI]

    J. Liang; J. D. Franson; T. B. Pittman

    2012-08-23

    The general concept of entangled photon holes is based on a correlated absence of photon pairs in an otherwise constant optical background. Here we consider the specialized case when this background is confined to two well-defined time bins, which allows the formation of time-bin entangled photon holes. We show that when the typical coherent state background is replaced by a true single-photon (Fock state) background, the basic time-bin entangled photon-hole state becomes equivalent to one of the time-bin entangled photon-pair states. We experimentally demonstrate these ideas using a parametric down-conversion photon-pair source, linear optics, and post-selection to violate a Bell inequality with time-bin entangled photon holes.

  16. Time delay measurement in the frequency domain

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

    Durbin, Stephen M.; Liu, Shih -Chieh; Dufresne, Eric M.; Li, Yuelin; Wen, Haidan

    2015-08-06

    Pump–probe studies at synchrotrons using X-ray and laser pulses require accurate determination of the time delay between pulses. This becomes especially important when observing ultrafast responses with lifetimes approaching or even less than the X-ray pulse duration (~100 ps). The standard approach of inspecting the time response of a detector sensitive to both types of pulses can have limitations due to dissimilar pulse profiles and other experimental factors. Here, a simple alternative is presented, where the frequency response of the detector is monitored versus time delay. Measurements readily demonstrate a time resolution of ~1 ps. Improved precision is possible bymore »simply extending the data acquisition time.« less

  17. Relaxation times calculated from angular deflections

    E-Print Network [OSTI]

    E. Athanassoula; Ch. L. Vozikis; J. C. Lambert

    2001-08-21

    In this paper we measure the two-body relaxation time from the angular deflection of test particles launched in a rigid configuration of field particles. We find that centrally concentrated configurations have relaxation times that can be shorter than those of the corresponding homogeneous distributions by an order of magnitude or more. For homogeneous distributions we confirm that the relaxation time is proportional to the number of particles. On the other hand centrally concentrated configurations have a much shallower dependence, particularly for small values of the softening. The relaxation time increases with the inter-particle velocities and with softening. The latter dependence is not very strong, of the order of a factor of two when the softening is increased by an order of magnitude. Finally we show that relaxation times are the same on GRAPE-3 and GRAPE-4, dedicated computer boards with limited and high precision respectively.

  18. Tunneling time calculations for general finite wavepackets based on the presence time formalism

    E-Print Network [OSTI]

    O. del Barco; M. Ortuño; V. Gasparian

    2015-05-31

    We analyze the tunneling time problem via the presence time formalism. With this method we reproduce previous results for very long wavepackets and we are able to calculate the tunneling time for general wavepackets of arbitrary shape and length. The tunneling time for a general wavepacket is equal to the average over the energy components of the standard phase time. With this approach we can also calculate the time uncertainty. We have checked that the results obtained with this approach agree extremely well with numerical simulations of the wavepacket evolution.

  19. Energy-time and frequency-time uncertainty relations: exact inequalities

    E-Print Network [OSTI]

    V. V. Dodonov; A. V. Dodonov

    2015-04-03

    We give a short review of known exact inequalities that can be interpreted as "energy-time" and "frequency-time" uncertainty relations. In particular we discuss a precise form of signals minimizing the physical frequency-time uncertainty product. Also, we calculate the "stationarity time" for mixed Gaussian states of a quantum harmonic oscillator, showing explicitly that pure quantum states are "more fragile" than mixed ones with the same value of the energy dispersion. The problems of quantum evolution speed limits, time operators and measurements of energy and time are briefly discussed, too.

  20. Narayanaswamy's 1971 aging theory and material time

    E-Print Network [OSTI]

    Jeppe C. Dyre

    2015-08-23

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

  1. Improving Pulsar Timing Precision with Single Pulses

    E-Print Network [OSTI]

    Kerr, Matthew

    2015-01-01

    The measurement error of pulse times of arrival (TOAs) in the high S/N limit is dominated by the quasi-random variation of a pulsar's emission profile from rotation to rotation. Like measurement noise, this noise is only reduced as the square root of observing time, posing a major challenge to future pulsar timing campaigns with large aperture telescopes, e.g. the Five-hundred-metre Aperture Spherical Telescope and the Square Kilometre Array. We propose a new method of pulsar timing that attempts to approximate the pulse-to-pulse variability with a small family of 'basis' pulses. If pulsar data are integrated over many rotations, this basis can be used to measure sub-pulse structure. Or, if high-time resolution data are available, the basis can be used to 'tag' single pulses and produce an optimal timing template. With realistic simulations, we show that these applications can dramatically reduce the effect of pulse-to-pulse variability on TOAs. Using high-time resolution data taken from the bright PSR J0835-...

  2. NO TRANSIT TIMING VARIATIONS IN WASP-4

    SciTech Connect (OSTI)

    Petrucci, R.; Schwartz, M.; Buccino, A. P.; Mauas, P. J. D.; Jofré, E.; Cúneo, V.; Gómez, M.; Martínez, C.

    2013-12-20

    We present six new transits of the system WASP-4. Together with 28 light curves published in the literature, we perform a homogeneous study of its parameters and search for variations in the transits' central times. The final values agree with those previously reported, except for a slightly lower inclination. We find no significant long-term variations in i or R{sub P} /R {sub *}. The O-C mid-transit times do not show signs of transit timing variations greater than 54 s.

  3. Moving Forth And Back In Time

    E-Print Network [OSTI]

    Otten, James

    MOVING FORTH AND BACK IN TIME James Otten Clearly objects do move forth and back in space. Thus, for instance, Jackson walks from home to the corner drugstore and then walks back home. But do objects also move forth and back in time? And if not..., would it be logically possible for them to do so? Indeed, what would even constitute a proper description of an object's moving forth and back in time? My aim in this paper is to answer these perplexing questions.1 Richard Taylor has developed a...

  4. Time as a parameter of statistical ensemble

    E-Print Network [OSTI]

    Sergei Viznyuk

    2011-11-26

    The notion of time is derived as a parameter of statistical ensemble representing the underlying system. Varying population numbers of microstates in statistical ensemble result in different expectation values corresponding to different times. We show a single parameter which equates to the notion of time is logarithm of the total number of microstates in statistical ensemble. We discuss the implications of proposed model for some topics of modern physics: Poincar\\'e recurrence theorem vs. Second Law of Thermodynamics, matter vs. anti-matter asymmetry of the universe, expansion of the universe, Big Bang.

  5. Part-Time Farming in Northeast Texas. 

    E-Print Network [OSTI]

    Martin, James R.; Southern, John H.

    1961-01-01

    days or more, includes 43 percent of all part-time operators. Part-time operators controlled 40 percent of the farm and land resources, marketed 28 percent of all farm products sold (in terms of value), but received only 16 percent of the net money...). The average value of farm resources was $16,024 with land $12,803, live- dock $1,846 and equipment $1,375. Part-time farmers controlled 29 percent of ie cropland and 33 percent of all idle crop- acres. However, they had relatively more ~~~~~dre, 42...

  6. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, Mary (West Richland, WA); Craig, Richard A. (West Richland, WA); Reeder, Paul L. (Richland, WA)

    1998-01-01

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body.

  7. Nuclear dynamics in time-dependent picture

    E-Print Network [OSTI]

    Takashi Nakatsukasa; Makoto Ito; Kazuhiro Yabana

    2006-10-19

    Using the time-dependent theory of quantum mechanics, we investigate nuclear electric dipole responses. The time evolution of a wave function is explicitly calculated in the coordinate-space representation. The particle continuum is treated with the absorbing boundary condition. Calculated time-dependent quantities are transformed into those of familiar energy representation. We apply the method to a three-body model for 11Li and to the mean-field model for 22O, then discuss properties of E1 response.

  8. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, M.; Craig, R.A.; Reeder, P.L.

    1998-01-06

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body. 14 figs.

  9. Time-aging time-stress superposition in soft glass under tensile deformation field

    E-Print Network [OSTI]

    Asima Shaukat; Ashutosh Sharma; Yogesh M. Joshi

    2010-06-10

    We have studied the tensile deformation behaviour of thin films of aging aqueous suspension of Laponite, a model soft glassy material, when subjected to a creep flow field generated by a constant engineering normal stress. Aqueous suspension of Laponite demonstrates aging behaviour wherein it undergoes time dependent enhancement of its elastic modulus as well as its characteristic relaxation time. However, under application of the normal stress, the rate of aging decreases and in the limit of high stress, the aging stops with the suspension now undergoing a plastic deformation. Overall, it is observed that the aging that occurs over short creep times at small normal stresses is same as the aging that occurs over long creep times at large normal stresses. This observation allows us to suggest an aging time - process time - normal stress superposition principle, which can predict rheological behaviour at longer times by carrying out short time tests.

  10. Space-Time Localization using Times of Arrival Sriram Venkateswaran and Upamanyu Madhow

    E-Print Network [OSTI]

    Madhow, Upamanyu

    Space-Time Localization using Times of Arrival Sriram Venkateswaran and Upamanyu Madhow Department of Electrical and Computer Engineering University of California Santa Barbara, CA 93106, USA Email: {sriram

  11. Time-Resolved Spectroscopy in Time-Dependent Density Functional Theory: An Exact Condition

    E-Print Network [OSTI]

    pulse to create a nonstationary state, which is then monitored in time by a probe pulse, is a central generation, and exploring photovoltaic materials, to name a few. At the same time, however, recent work

  12. Chinook Timing 1 October 11, 2007 Run timing of adult Chinook salmon passing

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Chinook Timing 1 October 11, 2007 Run timing of adult Chinook salmon passing Bonneville dam on the Columbia River White Paper Prepared by: W. Nicholas Beer Columbia Basin Research School of Aquatic....................................................................................................................... 8 In-River Conditions

  13. Development of a Time Resolved Fluorescence Spectroscopy System for Near Real-Time Clinical Diagnostic Applications 

    E-Print Network [OSTI]

    Trivedi, Chintan A.

    2010-07-14

    The design and development of a versatile time resolved fluorescence spectroscopy (TRFS) system capable of near real time data acquisition and processing for potential clinical diagnostic applications is reported. The TRFS apparatus is portable...

  14. MAKING THE TIME TO FIND THE TIME Many students struggle to find a way to organise their time around all the things

    E-Print Network [OSTI]

    Wapstra, Erik

    MAKING THE TIME TO FIND THE TIME Many students struggle to find a way to organise their time around all the things they have to do and all the things they want to do ... and to use the time into your approach to study. Where does your time go?? It is very difficult to make a time management plan

  15. Neuropsychological mechanisms of interval timing behavior

    E-Print Network [OSTI]

    Wilkinson, Gerald S.

    perceiving a beat in a musical composition to returning to the stove just prior to the tea kettle whistling to expecting a traffic light to change from red to green. Furthermore, interval timing is exhibited in a wide

  16. Electron Waiting Times in Mesoscopic Conductors

    E-Print Network [OSTI]

    Mathias Albert; Géraldine Haack; Christian Flindt; Markus Büttiker

    2012-02-14

    Electron transport in mesoscopic conductors has traditionally involved investigations of the mean current and the fluctuations of the current. A complementary view on charge transport is provided by the distribution of waiting times between charge carriers, but a proper theoretical framework for coherent electronic systems has so far been lacking. Here we develop a quantum theory of electron waiting times in mesoscopic conductors expressed by a compact determinant formula. We illustrate our methodology by calculating the waiting time distribution for a quantum point contact and find a cross-over from Wigner-Dyson statistics at full transmission to Poisson statistics close to pinch-off. Even when the low-frequency transport is noiseless, the electrons are not equally spaced in time due to their inherent wave nature. We discuss the implications for renewal theory in mesoscopic systems and point out several analogies with energy level statistics and random matrix theory.

  17. Real time PCR measurement by fluorescence anisotropy

    E-Print Network [OSTI]

    Crane, Bryan Lee, 1976-

    2005-01-01

    Real-time polymerase chain reaction (PCR) is the gold-standard for quantitation in both mutation and gene expression analyses. Already this technique has found valuable clinical application in disease diagnosis and progression ...

  18. Topic 5: Time-Dependent Behavior

    SciTech Connect (OSTI)

    Pfeiffer, P.A. [Argonne National Lab., IL (United States); Tanabe, Tada-aki [Nagoya Univ. (Japan). Dept. of Civil Engineering

    1991-12-31

    This chapter is a report of the material presented at the International Workshop on Finite Element Analysis of Reinforced Concrete, Session 4 -- Time Dependent Behavior, held at Columbia University, New York on June 3--6, 1991. Dr. P.A. Pfeiffer presented recent developments in time-dependent behavior of concrete and Professor T. Tanabe presented a review of research in Japan on time-dependent behavior of concrete. The chapter discusses the recent research of time-dependent behavior of concrete in the past few years in both the USA-European and Japanese communities. The author appreciates the valuable information provided by Zdenek P. Bazant in preparing the USA-European Research section.

  19. The timely self-portrait machine

    E-Print Network [OSTI]

    Haun, Gregory Cosmo

    1992-01-01

    This thesis explores the philosophy which underlies the Timely Self-Portrait Machine. The cultural history of the machine, the phenomenon of Television, and the personal history of this project are discussed. Technical ...

  20. Type Systems For Polynomial-time Computation 

    E-Print Network [OSTI]

    Hofmann, Martin

    This thesis introduces and studies a typed lambda calculus with higher-order primitive recursion over inductive datatypes which has the property that all definable number-theoretic functions are polynomial time computable. ...

  1. Near Real-Time Push Middleware

    E-Print Network [OSTI]

    Mal, Siddhartha Byron

    2012-01-01

    The mean time over all tests for SQL lat/lon searches wasmilliseconds, and 264.1 for SQL geography searches (Figureplatform capability between SQL and Java, and to represent

  2. Timing control by redundant inhibitory neuronal circuits

    SciTech Connect (OSTI)

    Tristan, I. Rulkov, N. F.; Huerta, R.; Rabinovich, M.

    2014-03-15

    Rhythms and timing control of sequential activity in the brain is fundamental to cognition and behavior. Although experimental and theoretical studies support the understanding that neuronal circuits are intrinsically capable of generating different time intervals, the dynamical origin of the phenomenon of functionally dependent timing control is still unclear. Here, we consider a new mechanism that is related to the multi-neuronal cooperative dynamics in inhibitory brain motifs consisting of a few clusters. It is shown that redundancy and diversity of neurons within each cluster enhances the sensitivity of the timing control with the level of neuronal excitation of the whole network. The generality of the mechanism is shown to work on two different neuronal models: a conductance-based model and a map-based model.

  3. Research Finance Time and Effort System Procedures

    E-Print Network [OSTI]

    ...............................................................................................................7 To Review and Certify a Report" ...................................................................................................8 Grants & Contracts Unit participate in the T&E system. Additionally, faculty or staff with mandatory or committed cost share time

  4. Automatic tuning of continuous-time filters 

    E-Print Network [OSTI]

    Sumesaglam, Taner

    2004-11-15

    Integrated high-Q continuous-time filters require adaptive tuning circuits that will correct the filter parameters such as center frequency and quality factor (Q). Three different automatic tuning techniques are introduced. In all of the proposed...

  5. Success in the Time of NCLB

    E-Print Network [OSTI]

    Lyons, Laura K.

    2013-05-31

    This phenomenological study presents a description of the experience of students and teachers in a charter high school in an urban school district during the time of the implementation of No Child Left Behind (NCLB). The ...

  6. EnergyPlus Run Time Analysis

    E-Print Network [OSTI]

    Hong, Tianzhen

    2009-01-01

    N ATIONAL L ABORATORY EnergyPlus Run Time Analysis Tianzhenl y s i s Development of EnergyPlus for Use in Title 24 andCommission Staff Use of EnergyPlus Deliverable for Task

  7. GROUP SPARSITY VIA LINEAR-TIME PROJECTION

    E-Print Network [OSTI]

    2008-08-01

    Jul 31, 2008 ... linear-time algorithm for Euclidean projection onto the l1- and group l1-norm ..... of 128 entries and eight non-zero groups, and additive noise si ...

  8. Myrinet Real Time Protocol with flexible routing 

    E-Print Network [OSTI]

    Kini, Savita

    1998-01-01

    Real Time communication relies on resource reservation ics. along the path of the connection for performance guarantees, typically in terms of bounded delays. A fully distributed admission control scheme for resource allocation in real...

  9. Time-Resolved Photoluminescence and Photovoltaics

    SciTech Connect (OSTI)

    Metzger, W. K.; Ahrenkiel, R. K.; Dippo, P.; Geisz, J.; Wanlass, M. W.; Kurtz, S.

    2005-01-01

    The time-resolved photoluminescence (TRPL) technique and its ability to characterize recombination in bulk photovoltaic semiconductor materials are reviewed. Results from a variety of materials and a few recent studies are summarized and compared.

  10. Space and time from translation symmetry

    E-Print Network [OSTI]

    Albert Schwarz

    2009-05-16

    We show that the notions of space and time in algebraic quantum field theory arise from translation symmetry if we assume asymptotic commutativity. We argue that this construction can be applied to string theory.

  11. Parental Time, Behaviors and Childhood Obesity 

    E-Print Network [OSTI]

    Kuteesa, Annette

    2012-02-14

    The rates of childhood obesity remain high in spite of the enormous efforts dedicated to tackling the disease. This dissertation investigates the effect of two of its causes, including parental time and children's obesity ...

  12. Wind and time in Homeric epic

    E-Print Network [OSTI]

    Purves, AC

    2010-01-01

    73–83. Scott, W. C. 1966. “Wind Imagery in the Oresteia. ”30–35; West 1961: 133–36. Wind and Time in Homeric Epic ———56. Stern, L. 2004. “‘Paths That Wind through the Thicket of

  13. Energy-time uncertainty principle and lower bounds on sojourn time

    E-Print Network [OSTI]

    Joachim Asch; Olivier Bourget; Victor Cortes; Claudio Fernandez

    2015-07-23

    One manifestation of quantum resonances is a large sojourn time, or autocorrelation, of states which are initially localized. We elaborate on Lavine's time-energy uncertainty principle and give an estimate on the sojourn time. The bound involves Fermi's Golden Rule for the case of perturbed embedded eigenstates. Only very mild regularity is required. We illustrate the theory by applications to resonances for time dependent- and multistate systems .

  14. Extending quantum control of time-independent systems to time-dependent systems

    E-Print Network [OSTI]

    Zhen-Yu Wang; Ren-Bao Liu

    2011-01-27

    We establish that if a scheme can control a time-independent system arbitrarily coupled to a generic finite bath over a short period of time $T$ with control precision $O(T^{N+1})$, it can also realize the control with the same order of precision on smoothly time-dependent systems. This result extends the validity of various universal dynamical control schemes to arbitrary analytically time-dependent systems.

  15. Time Domain Continuous Imaging TIME DOMAIN CONTINUOUS IMAGING doesn't sound like

    E-Print Network [OSTI]

    Dietz, Henry G. "Hank"

    the scene with skewed timing and exposure settings. Our 3D-printed array camera at SC14 coordinates four

  16. Optimum time for artificial insemination of the bovine species at various times of the year 

    E-Print Network [OSTI]

    Broadway, John Louis

    1973-01-01

    OPTIMUM TIME FOR ARTIFICIAL INSEMINATION OF THE BOVINE SPECIES AT VARIOUS TIMES OF THE YEAR A Thesis by JOHN LOUIS BROAUNAY, III Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1973 Major Subject; Physiology of Reproduction OPTIMUM TIME FOR ARTIFICIAL INSEMINATION OP THE BOVINE SPECIES AT VARIOUS TIMES OF THE YEAR A Thesis by JOHN LOUIS BROAINAY, III Approved as to style and content...

  17. REAL TIME SYSTEM OPERATIONS 2006-2007

    SciTech Connect (OSTI)

    Eto, Joseph H.; Parashar, Manu; Lewis, Nancy Jo

    2008-08-15

    The Real Time System Operations (RTSO) 2006-2007 project focused on two parallel technical tasks: (1) Real-Time Applications of Phasors for Monitoring, Alarming and Control; and (2) Real-Time Voltage Security Assessment (RTVSA) Prototype Tool. The overall goal of the phasor applications project was to accelerate adoption and foster greater use of new, more accurate, time-synchronized phasor measurements by conducting research and prototyping applications on California ISO's phasor platform - Real-Time Dynamics Monitoring System (RTDMS) -- that provide previously unavailable information on the dynamic stability of the grid. Feasibility assessment studies were conducted on potential application of this technology for small-signal stability monitoring, validating/improving existing stability nomograms, conducting frequency response analysis, and obtaining real-time sensitivity information on key metrics to assess grid stress. Based on study findings, prototype applications for real-time visualization and alarming, small-signal stability monitoring, measurement based sensitivity analysis and frequency response assessment were developed, factory- and field-tested at the California ISO and at BPA. The goal of the RTVSA project was to provide California ISO with a prototype voltage security assessment tool that runs in real time within California ISO?s new reliability and congestion management system. CERTS conducted a technical assessment of appropriate algorithms, developed a prototype incorporating state-of-art algorithms (such as the continuation power flow, direct method, boundary orbiting method, and hyperplanes) into a framework most suitable for an operations environment. Based on study findings, a functional specification was prepared, which the California ISO has since used to procure a production-quality tool that is now a part of a suite of advanced computational tools that is used by California ISO for reliability and congestion management.

  18. Metastring Theory and Modular Space-time

    E-Print Network [OSTI]

    Laurent Freidel; Robert G. Leigh; Djordje Minic

    2015-02-27

    String theory is canonically accompanied with a space-time interpretation which determines S-matrix-like observables, and connects to the standard physics at low energies in the guise of local effective field theory. Recently, we have introduced a reformulation of string theory which does not rely on an {\\it a priori} space-time interpretation or a pre-assumption of locality. This \\hlt{metastring theory} is formulated in such a way that stringy symmetries (such as T-duality) are realized linearly. In this paper, we study metastring theory on a flat background and develop a variety of technical and interpretational ideas. These include a formulation of the moduli space of Lorentzian worldsheets, a careful study of the symplectic structure and consequently consistent closed and open boundary conditions, and the string spectrum and operator algebra. What emerges from these studies is a new quantum notion of space-time that we refer to as a quantum Lagrangian or equivalently a \\hlt{modular space-time}. This concept embodies the standard tenets of quantum theory and implements in a precise way a notion of {relative locality}. The usual string backgrounds (non-compact space-time along with some toroidally compactified spatial directions) are obtained from modular space-time by a limiting procedure that can be thought of as a correspondence limit.

  19. 22 March 2012 Employee Information Lost Time No Lost Time Modified Duties

    E-Print Network [OSTI]

    Machel, Hans

    22 March 2012 Employee Information Lost Time No Lost Time Modified Duties Last Name First Name the injured worker have personal coverage? Yes No Is the injured worker a partner or director in this business OR Did this condition develop over a period of time? Yes No Hours of employment on the day of accident

  20. Unfolding of time Petri nets for quantitative time analysis Medesu Sogbohossou and David Delfieu

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    are interesting formalism with expressing power of true parallelism or concurrency in discrete events systems. Time Petri nets (TPN) [1] are timed extension often used to modelize realtime systems. Thanks://www.irccyn.ec-nantes.fr Abstract. The verification of properties on a Time Petri net is often based on the state class graph

  1. Extended-Time Demand Bids: A New Bidding Framework to Accommodate Time-Shiftable Loads

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    , price bids, energy bids, day-ahead market, demand response, price competativeness, load synchronization bids e Energy component of a bid p Price component of a bid Start-time component of a bid End-time component of a bid i Bidder index t Hourly time index q Cleared energy in the market Cleared price

  2. Time Limitation on Direct Subsidized Loan Eligibility for First-Time Borrowers on or after

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Time Limitation on Direct Subsidized Loan Eligibility for First-Time Borrowers on or after July 1, 2013 Maximum eligibility period to receive Direct Subsidized Loans There is a limit on the maximum period of time (measured in academic years) that you can receive Direct Subsidized Loans. In general, you

  3. Time Extraction from Real-time Generated Football Reports Markus Borg

    E-Print Network [OSTI]

    Time Extraction from Real-time Generated Football Reports Markus Borg D02, Lund Institute information from football match reports generated through minute- by-minute reporting. By using regular ex is presented. 1 Introduction Football reports written in real-time is an increas- ingly popular way to report

  4. Real Time Search User Behavior Real time search is an increasingly important area of

    E-Print Network [OSTI]

    Jansen, James

    . The most frequently used terms accounted for only 0.03% of the total terms. Concerning search topics Web search. Searchers of real time content often repeat queries overtime, perhaps indicating long term content increasingly enters the main stream. Keywords Real time search, real time content, Collecta

  5. Pulsar searches and timing with the SKA

    E-Print Network [OSTI]

    R. Smits; M. Kramer; B. Stappers; D. R. Lorimer; J. Cordes; A. Faulkner

    2008-11-03

    The Square Kilometre Array (SKA) is a planned multi purpose radio telescope with a collecting area approaching 1 million square metres. One of the key science objectives of the SKA is to provide exquisite strong-field tests of gravitational physics by finding and timing pulsars in extreme binary systems such as a pulsar-black hole binary. To find out how three preliminary SKA configurations will affect a pulsar survey, we have simulated SKA pulsar surveys for each configuration. We estimate that the total number of normal pulsars the SKA will detect, using only the 1-km core and 30 minutes integration time, is around 14000 normal pulsar and 6000 millisecond pulsars. We describe a simple strategy for follow-up timing observations and find that, depending on the configuration, it would take 1-6 days to obtain a single timing point for 14000 pulsars. Obtaining a single timing point for the high-precision timing projects of the SKA, will take less than 14 hours, 2 days, or 3 days, depending on the configuration. The presence of aperture arrays will be of great benefit here. We also study the computational requirements for beam forming and data analysis for a pulsar survey. Beam forming of the full field of view of the single-pixel feed 15-m dishes using the 1-km core of the SKA requires about 2.2*10^15 operations per second. The corresponding data rate from such a pulsar survey is about 4.7*10^11 bytes per second. The required computational power for a deep real time analysis is estimated to be 1.2*10^16 operations per second. For an aperture array or dishes equipped with phased array feeds, the survey can be performed faster, but the computational requirements and data rates will go up.

  6. Relative entropy and waiting times for continuous-time Markov processes

    E-Print Network [OSTI]

    Jean-Rene Chazottes; Cristian Giardina; Frank Redig

    2005-12-16

    For discrete-time stochastic processes, there is a close connection between return/waiting times and entropy. Such a connection cannot be straightforwardly extended to the continuous-time setting. Contrarily to the discrete-time case one does need a reference measure and so the natural object is relative entropy rather than entropy. In this paper we elaborate on this in the case of continuous-time Markov processes with finite state space. A reference measure of special interest is the one associated to the time-reversed process. In that case relative entropy is interpreted as the entropy production rate. The main results of this paper are: almost-sure convergence to relative entropy of suitable waiting-times and their fluctuation properties (central limit theorem and large deviation principle).

  7. Nonlinear Time Domain Modeling and Simulation of Surface and...

    Office of Environmental Management (EM)

    Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling...

  8. Holographic dual of a time machine

    E-Print Network [OSTI]

    Irina Arefeva; Andrey Bagrov; Petter Saterskog; Koenraad Schalm

    2015-08-18

    We apply the $AdS/CFT$ holography to the simplest possible eternal time machine solution in $AdS_3$ based on two conical defects moving around their center of mass along a circular orbit. Closed timelike curves in this space-time extend all the way to the boundary of $AdS_3$, violating causality of the boundary field theory. By use of the geodesic approximation we address the "grandfather paradox" in the dual $1+1$ dimensional field theory and calculate the two-point retarded Green function. It has a non-trivial analytical structure both at negative and positive times, providing us with an intuition on how an interacting quantum field could behave once causality is broken. In contrast with the previous considerations our calculations reveal the possibility of a consistent and controllable evolution of a quantum system without any need to impose additional consistency constraints.

  9. Real time gamma-ray signature identifier

    DOE Patents [OSTI]

    Rowland, Mark (Alamo, CA); Gosnell, Tom B. (Moraga, CA); Ham, Cheryl (Livermore, CA); Perkins, Dwight (Livermore, CA); Wong, James (Dublin, CA)

    2012-05-15

    A real time gamma-ray signature/source identification method and system using principal components analysis (PCA) for transforming and substantially reducing one or more comprehensive spectral libraries of nuclear materials types and configurations into a corresponding concise representation/signature(s) representing and indexing each individual predetermined spectrum in principal component (PC) space, wherein an unknown gamma-ray signature may be compared against the representative signature to find a match or at least characterize the unknown signature from among all the entries in the library with a single regression or simple projection into the PC space, so as to substantially reduce processing time and computing resources and enable real-time characterization and/or identification.

  10. Measurable Maximal Energy and Minimal Time Interval

    E-Print Network [OSTI]

    Eiman Abou El Dahab; Abdel Nasser Tawfik

    2014-01-14

    The possibility of finding the measurable maximal energy and the minimal time interval is discussed in different quantum aspects. It is found that the linear generalized uncertainty principle (GUP) approach gives a non-physical result. Based on large scale Schwarzshild solution, the quadratic GUP approach is utilized. The calculations are performed at the shortest distance, at which the general relativity is assumed to be a good approximation for the quantum gravity and at larger distances, as well. It is found that both maximal energy and minimal time have the order of the Planck time. Then, the uncertainties in both quantities are accordingly bounded. Some physical insights are addressed. Also, the implications on the physics of early Universe and on quantized mass are outlined. The results are related to the existence of finite cosmological constant and minimum mass (mass quanta).

  11. Time-Resonant Tokamak Plasma Edge Instabilities?

    E-Print Network [OSTI]

    Webster, A J; Calderon, F A; Chapman, S C; Delabie, E; Dodt, D; Felton, R; Todd, T N; Maviglia, F; Morris, J; Riccardo, V; Alper, B; Brezinsek, S; Coad, P; Likonen, J; Rubel, M; Contributors, JET EFDA

    2013-01-01

    For a two week period during the Joint European Torus (JET) 2012 experimental campaign, the same high confinement plasma was repeated 151 times. The dataset was analysed to produce a probability density function (pdf) for the waiting times between edge-localised plasma instabilities ("ELMS"). The result was entirely unexpected. Instead of a smooth single peaked pdf, a succession of 4-5 sharp maxima and minima uniformly separated by 7-8 millisecond intervals was found. Here we explore the causes of this newly observed phenomenon, and conclude that it is either due to a self-organised plasma phenomenon or an interaction between the plasma and a real-time control system. If the maxima are a result of "resonant" frequencies at which ELMs can be triggered more easily, then future ELM control techniques can, and probably will, use them. Either way, these results demand a deeper understanding of the ELMing process.

  12. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, P.P.; Smatlak, D.L.; Cohn, D.R.; Wittle, J.K.; Titus, C.H.; Surma, J.E.

    1995-12-26

    Microwave-induced plasma is described for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury. 3 figs.

  13. Black hole thermodynamics in finite time

    E-Print Network [OSTI]

    Gruber, Christine

    2016-01-01

    Finite-time thermodynamics provides the means to revisit ideal thermodynamic equilibrium processes in the light of reality and investigate the energetic "price of haste", i.e. the consequences of carrying out a process in finite time, when perfect equilibrium cannot be awaited due to economic reasons or the nature of the process. Employing the formalism of geometric thermodynamics, a lower bound on the energy dissipated during a process is derived from the thermodynamic length of that process. The notion of length is hereby defined via a metric structure on the space of equilibrium thermodynamics, spanned by a set of thermodynamic variables describing the system. Since the aim of finite-time thermodynamics is to obtain realistic limitations on idealized scenarios, it is a useful tool to reassess the efficiency of thermodynamic processes. We examine its implications for black hole thermodynamics, in particular scenarios inspired by the Penrose process, a thought experiment by which work can be extracted from a...

  14. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, Paul P. (4 Ledgewood Dr., Bedford, MA 01730); Smatlak, Donna L. (10 Village Hill Rd., Belmont, MA 02178); Cohn, Daniel R. (26 Walnut Hill Rd., Chestnut Hill, MA 02167); Wittle, J. Kenneth (1740 Conestoga Rd., Chester Springs, PA 19425); Titus, Charles H. (323 Echo Valley La., Newton Square, PA 19072); Surma, Jeffrey E. (806 Brian La., Kennewick, WA 99337)

    1995-01-01

    Microwave-induced plasma for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury.

  15. Time-temperature equivalence in Martensite tempering

    SciTech Connect (OSTI)

    Hackenberg, Robert E.; Thomas, Grant A.; Speer, John G.; Matlock, David K.; Krauss, George

    2008-06-16

    The relationship between time and temperature is of great consequence in many materials-related processes including the tempering of martensite. In 1945, Hollomon and Jaffe quantified the 'degree of tempering' as a function of both tempering time, t, and tempering temperature, T, using the expression, T(log t + c). Here, c is thought to be a material constant and appears to decrease linearly with increasing carbon content. The Hollomon-Jaffe tempering parameter is frequently cited in the literature. This work reviews the original derivation of the tempering parameter concept, and presents the use of the characteristics diffusion distance as an alternative time-temperature relationship during martensite tempering. During the tempering of martensite, interstitial carbon atoms diffuse to form carbides. In addition, austenite decomposes, dislocations and grain boundaries rearrange, associated with iron self diffusion. Since these are all diffusional processes, it is reasonable to expect the degree of tempering to relate to the extent of diffusion.

  16. System Identification: Time Varying and Nonlinear Methods 

    E-Print Network [OSTI]

    Majji, Manoranjan

    2010-07-14

    fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, John L. Junkins Committee Members, Aniruddha Datta Jer-Nan Juang Daniele Mortari Othon K. Rediniotis Srinivas R. Vadali Head of Department... time varying systems are governed by a set of difference equations governing the evolution of the state in time being given by 1k k k k kA B+ = +x x u (2.1) together with a corresponding initial state vector 0x . The state variable nk ?x ? is most...

  17. Time-dependent angularly averaged inverse transport

    E-Print Network [OSTI]

    Guillaume Bal; Alexandre Jollivet

    2009-05-07

    This paper concerns the reconstruction of the absorption and scattering parameters in a time-dependent linear transport equation from knowledge of angularly averaged measurements performed at the boundary of a domain of interest. We show that the absorption coefficient and the spatial component of the scattering coefficient are uniquely determined by such measurements. We obtain stability results on the reconstruction of the absorption and scattering parameters with respect to the measured albedo operator. The stability results are obtained by a precise decomposition of the measurements into components with different singular behavior in the time domain.

  18. Dead-time Corrected Disdrometer Data

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

    Bartholomew, Mary Jane

    Original and dead-time corrected disdrometer results for observations made at SGP and TWP. The correction is based on the technique discussed in Sheppard and Joe, 1994. In addition, these files contain calculated radar reflectivity factor, mean Doppler velocity and attenuation for every measurement for both the original and dead-time corrected data at the following wavelengths: 0.316, 0.856, 3.2, 5, and 10cm (W,K,X,C,S bands). Pavlos Kollias provided the code to do these calculations.

  19. Rehabilitating space-times with NUTs

    E-Print Network [OSTI]

    Clément, Gérard; Guenouche, Mourad

    2015-01-01

    We revisit the Taub-NUT solution of the Einstein equations without time periodicity condition, showing that the Misner string is still fully transparent for geodesics. In this case, analytic continuation can be carried out through both horizons leading to a Hausdorff spacetime without a central singularity, and thus geodesically complete. Furthermore, we show that, in spite of the presence of a region containing closed time-like curves, there are no closed causal {\\em geodesics}. Thus, some longstanding obstructions to accept the Taub-NUT solution as physically relevant are removed.

  20. Rehabilitating space-times with NUTs

    E-Print Network [OSTI]

    Gérard Clément; Dmitri Gal'tsov; Mourad Guenouche

    2015-08-30

    We revisit the Taub-NUT solution of the Einstein equations without time periodicity condition, showing that the Misner string is still fully transparent for geodesics. In this case, analytic continuation can be carried out through both horizons leading to a Hausdorff spacetime without a central singularity, and thus geodesically complete. Furthermore, we show that, in spite of the presence of a region containing closed time-like curves, there are no closed causal {\\em geodesics}. Thus, some longstanding obstructions to accept the Taub-NUT solution as physically relevant are removed.

  1. Deriving time from the geometry of space

    E-Print Network [OSTI]

    James M. Chappell; John G. Hartnett; Nicolangelo Iannella; Derek Abbott

    2015-04-08

    The Minkowski formulation of special relativity reveals the essential four-dimensional nature of spacetime, consisting of three space and one time dimension. Recognizing its fundamental importance, a variety of arguments have been proposed over the years attempting to derive the Minkowski spacetime structure from fundamental physical principles. In this paper we illustrate how Minkowski spacetime follows naturally from the geometric properties of three dimensional Clifford space modeled with multivectors. This approach also generalizes spacetime to an eight dimensional space as well as doubling the size of the Lorentz group. This description of spacetime also provides a new geometrical interpretation of the nature of time.

  2. Emergent Time and the M5-Brane

    E-Print Network [OSTI]

    C. M. Hull; N. Lambert

    2014-03-18

    We consider the maximal super-Yang-Mills theory in 5 Euclidean dimensions with SO(5) R-symmetry and 16 supersymmetries. We argue that the strong coupling limit of this theory (with a possible UV completion) has an emergent time dimension and gives a description of the 5+1 dimensional Lorentz invariant (2,0) theory of the M5-brane, compactified on a timelike circle with radius R=g^2/4\\pi^2 . Our discussion involves issues of quantization of Euclidean theories without time.

  3. Dead-time Corrected Disdrometer Data

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

    Bartholomew, Mary Jane

    2008-03-05

    Original and dead-time corrected disdrometer results for observations made at SGP and TWP. The correction is based on the technique discussed in Sheppard and Joe, 1994. In addition, these files contain calculated radar reflectivity factor, mean Doppler velocity and attenuation for every measurement for both the original and dead-time corrected data at the following wavelengths: 0.316, 0.856, 3.2, 5, and 10cm (W,K,X,C,S bands). Pavlos Kollias provided the code to do these calculations.

  4. Mean Field Variational Approximations in Continuous-Time Markov Processes

    E-Print Network [OSTI]

    Friedman, Nir

    Mean Field Variational Approximations in Continuous-Time Markov Processes A thesis submitted Processes . . . . . . . . . . . . . . . . . . . 18 2.3 Continuous Time Markov Processes-component Representation - Continuous Time Bayesian Networks . 24 2.3.3 Inference in Continuous Time Markov Processes

  5. AN EFFICIENT SECOND ORDER IN TIME SCHEME FOR APPROXIMATING LONG TIME STATISTICAL PROPERTIES OF

    E-Print Network [OSTI]

    AN EFFICIENT SECOND ORDER IN TIME SCHEME FOR APPROXIMATING LONG TIME STATISTICAL PROPERTIES of the following efficient second order in time scheme for the 2D Navier-Stokes equation in a periodic box: 3n+1 - 4n + n-1 2k + (2n - n-1 ) · (2n - n-1 ) - n+1 = fn+1 , -n = n . The scheme is a combination of a 2

  6. Timing Verification of Adaptive Integrated Circuits 

    E-Print Network [OSTI]

    Kumar, Rohit

    2014-08-01

    timing analysis (SSTA). The proposed method is validated on benchmark circuits including the recent ISPD'13 suite, which has circuit as large as 150K gates. The results show that our method can achieve orders of magnitude speed-up over Monte Carlo...

  7. Real Time Grid Reliability Management 2005

    SciTech Connect (OSTI)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  8. Timely PTS Applications Critical to Staying Navy

    E-Print Network [OSTI]

    Timely PTS Applications Critical to Staying Navy Navy Personnel Command (NPC) is reminding commands and Sailors that submitting Perform to Serve (PTS) applications is the key to being able to stay Navy/10 explains how PTS is used to shape the Navy, and includes all business rules concerning. Commands must

  9. Time-Frequency Analysis as Probabilistic Inference

    E-Print Network [OSTI]

    Turner, Richard E.

    2014-11-06

    ) and (19) yields: (21) 6176 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 62, NO. 23, DECEMBER 1, 2014 Fig. 1. Relationships between classical and probabilistic time-frequency anal- ysis. A complex filter bank (cFB, ) is formed from a set of filters...

  10. Does Daylight Savings Time Affect Traffic Accidents? 

    E-Print Network [OSTI]

    Deen, Sophia 1988-

    2012-04-20

    This paper studies the effect of changes in accident pattern due to Daylight Savings Time (DST). The extension of the DST in 2007 provides a natural experiment to determine whether the number of traffic accidents is affected by shifts in hours...

  11. Name: Section Number: TA Name: Section Time

    E-Print Network [OSTI]

    Wenzl, Hans

    carefully, answer each question completely, and show all of your work. Write your solutions clearly for the red light to turn green. The probability density function for x is given by p(x) = 1 40 if 0 x 40, 0 to turn green? (b) What is the median wait time for the red light to turn green? (c) What is the mean wait

  12. PRELIMINARY TIME ESTIMATES FOR CORING OPERATIONS

    E-Print Network [OSTI]

    PRELIMINARY TIME ESTIMATES FOR CORING OPERATIONS Ocean Drilling Program Texas A&M University portion requires the written consent of the Director, Ocean Drilling Program, Texas A&M University, College Station, Texas 77843-3469, as well as appropriate acknowledgment of this source. Technical Note 1

  13. Light gas gun with reduced timing jitter

    SciTech Connect (OSTI)

    Laabs, Gary W.; Funk, David J.; Asay, Blaine W.

    1996-12-01

    A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved by pneumatic means and free the projectile.

  14. TimeVariable Photo-Evaporation of

    E-Print Network [OSTI]

    Throop, Henry

    TimeVariable Photo-Evaporation of Protoplanetary Disks Henry Throop (PSI) DDA Meeting Mt. Hood clusters. #12;Work we have done involves ... ­ UV photo-evaporation from massive stars ­ Interaction; Moeckel & Throop 2009; Throop & Bally 2010; Pichardo et al 2010; Throop 2011. #12;Photo

  15. Nonlinear time-series analysis revisited

    E-Print Network [OSTI]

    Elizabeth Bradley; Holger Kantz

    2015-03-25

    In 1980 and 1981, two pioneering papers laid the foundation for what became known as nonlinear time-series analysis: the analysis of observed data---typically univariate---via dynamical systems theory. Based on the concept of state-space reconstruction, this set of methods allows us to compute characteristic quantities such as Lyapunov exponents and fractal dimensions, to predict the future course of the time series, and even to reconstruct the equations of motion in some cases. In practice, however, there are a number of issues that restrict the power of this approach: whether the signal accurately and thoroughly samples the dynamics, for instance, and whether it contains noise. Moreover, the numerical algorithms that we use to instantiate these ideas are not perfect; they involve approximations, scale parameters, and finite-precision arithmetic, among other things. Even so, nonlinear time-series analysis has been used to great advantage on thousands of real and synthetic data sets from a wide variety of systems ranging from roulette wheels to lasers to the human heart. Even in cases where the data do not meet the mathematical or algorithmic requirements to assure full topological conjugacy, the results of nonlinear time-series analysis can be helpful in understanding, characterizing, and predicting dynamical systems.

  16. Stream Temperatu Timing of Coho Sa

    E-Print Network [OSTI]

    McMahon, Thomas E.

    and the ini- tiation of feeding involves leaving secure?low energy environ- ments in the interstices of stream bed gravels and entering the high energy environment of the stream, Among populationssf coho salmon (0Stream Temperatu Timing of Coho Sa from Carnation Creek, British L. Blair Holtby, Thomas E. Mc

  17. It's About Time: Realtime Logics Reviewed ? ??

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    ­time verification problem in polynomial space, or even decidable. 1 Introduction The execution of a reactive system in (linear) temporal logic. 3 The model­checking problem asks, given a reactive system and a temporal for of temporal logic is not dominant: if a reactive system is given as a product of B¨uchi automata, the model

  18. Segmenting Time Series for Weather Forecasting

    E-Print Network [OSTI]

    Reiter, Ehud

    summarisation. We found three alternative ways in which we could model data summarisation. One approach is based turbines. In the domain of meteorology, time series data produced by numerical weather prediction (NWP) models is summarised as weather forecast texts. In the domain of gas turbines, sensor data from

  19. Research Article Human Brain Activity Time-

    E-Print Network [OSTI]

    Zacks, Jeffrey M.

    Research Article Human Brain Activity Time- Locked to Narrative Event Boundaries Nicole K. Speer to or reading descriptions of everyday activities (e.g., reading about a person making cookies; Speer & Zacks, 2005; Speer, Zacks, & Reynolds, 2006). These findings are not altogether surprising given theories

  20. Hybrid Abstractions that Preserve Timed Languages

    E-Print Network [OSTI]

    Pappas, George J.

    Hybrid Abstractions that Preserve Timed Languages Paulo Tabuada1 and George J. Pappas2 1 Instituto@ee.upenn.edu Abstract. In this paper we consider the problem of extracting an ab- straction from a hybrid control system that determine when trajectories of the original hybrid system can be generated by the abstracted hybrid system

  1. Protist Web Alert Memories of Times Past

    E-Print Network [OSTI]

    Simpson, Larry

    Protist Web Alert Memories of Times Past The Euglenoid Project (http that the Euglenoids have always fascinated me and so did this site. Micro*scope Astrobiology Institute Web Site from reviewed this site in a previous Web Alert, but it has been revised and updated and so is worth another

  2. EXPERIMENTAL CONTROL OF VARIABLE CAM TIMING ACTUATORS

    E-Print Network [OSTI]

    . This dilution of the mixture in the cylinder re- duces HC and NOx feedgas emissions. Neverthe- less, retarding al., 1998). Table 1 illus- trates the sought after NOx emission reduction when the Variable Cam conditions (1500rpm, 30Nm). NOx pollutant emissions are lowered by retarding the cam timing. ically

  3. Berlin Heart Excor: Date and time

    E-Print Network [OSTI]

    Miyashita, Yasushi

    Berlin Heart Excor: Date and time 2015 8 29 1600 1700 Saturday, 29 August 2015, 4:00 pm -5 Professor, Department of Cardiovascular Surgery, The University of Tokyo Hospital Points Berlin Heart Heart Excor". Excellent results in trials with nine patients have prompted governmental approval

  4. Precision-Timed (PRET) Stephen A. Edwards

    E-Print Network [OSTI]

    2007. (Source: Reuters) Precision-Timed (PRET) Machines ­ p. 6/1 #12;Certification in Avionics · Rather { actfreq 1 do leftJet(leftMotor); actfreq 1 do rightJet(rightMotor); exitfreq 1 do point(goPoint); exitfreq

  5. Heating programmer Controls the times the system

    E-Print Network [OSTI]

    Carletta, Jean

    #12;#12;#12;#12;#12;#12;#12;#12;#12;#12;#12;#12;Heating programmer Controls the times the system that will do that for you. #12;Boiler thermostat Controls the temperature of the water in the system -- which? #12;Why don't we already have room thermostats? Because the building regs only specify the controls

  6. Signature Search Time Evaluation in Flat File

    E-Print Network [OSTI]

    Robertazzi, Thomas G.

    for the aerospace industry are discussed in Sripada [32]. B. Divisible Load Modeling The novelty of this paper, IEEE Stony Brook University For the first time, divisible load scheduling theory is used to solve level tree networks with single and multiple installment load distribution. The use of divisible load

  7. General Information 1. Indicate time spent

    E-Print Network [OSTI]

    Pittendrigh, Barry

    General Information 1. Indicate time spent: On a computer at work: ____ hours per day On a computer at home: ____ hours per day On a handheld computer (e.g., Blackberry): ____ hours per day 2. Desktop or laptop computer Use: (circle applicable) My work computer is a: desktop laptop My home computer is a

  8. Network With Costs: Timing and Flow Decomposition

    E-Print Network [OSTI]

    Ho, Tracey

    Network With Costs: Timing and Flow Decomposition Shreeshankar Bodas, Jared Grubb, Sriram Sridharan-- This paper analyzes a capacitated network with costs from an information theoretic point of view. Determines a flow decomposition for a network with costs starting from an information theoretic point of view

  9. SPONTANEOUS AND EXPLICIT ESTIMATION OF TIME DELAYS

    E-Print Network [OSTI]

    So, Hing-Cheung

    , called the explicit time delay estimator (ETDE), is rst developed to nd the di erential delay of a signal through only one propagation path. Basically, the ETDE is an adaptive FIR lter whose coe cients it can provide direct delay measurements on a sample-by-sample basis. The ETDE performance surface

  10. APPLICATION FOR ADMISSION Part-time Program

    E-Print Network [OSTI]

    Martin, Jeff

    ) related to this program area: Professional designation(s): 275 Portage Avenue | Winnipeg | Manitoba | R3B research into program enrolment and related statistical profiling activities. If you have any questionsAPPLICATION FOR ADMISSION Part-time Program ADMISSION REQUIREMENTS: To qualify for admission

  11. Performance Prediction through Time Measurements Roman Iakymchuk

    E-Print Network [OSTI]

    of predicting performance of linear algebra algorithms for small matrices. This approach is based on reducing linear algebra operations such as the BLAS subroutines. As the time measurements confirmed, the execution is built on top of two BLAS subroutines, with the separately measured one. The applicability

  12. Real-time control over networks 

    E-Print Network [OSTI]

    Ji, Kun

    2007-09-17

    issues regarding control over networks and can be the guidelines of NCS design. A single actuator ball magnetic-levitation (maglev) system is implemented as a test bed for the real-time control over networks to illustrate and verify the theoretical...

  13. Time interleaved counter analog to digital converters 

    E-Print Network [OSTI]

    Danesh, Seyed Amir Ali

    2011-11-22

    The work explores extending time interleaving in A/D converters, by applying a high-level of parallelism to one of the slowest and simplest types of data-converters, the counter ADC. The motivation for the work is to ...

  14. Multiple ``time step'' Monte Carlo Balazs Hetenyia)

    E-Print Network [OSTI]

    Berne, Bruce J.

    and nuclear degrees of free- dom respectively. ANES­MC was particularly designed to treat polarizable systems in CPU time can be achieved. Common criteria of separation into rapidly and slowly varying parts6 procedure is similar in spirit but different in signifi- cant ways from the adiabatic nuclear and electronic

  15. Space-time attributes of physical objects and the laws of space-time physics

    E-Print Network [OSTI]

    J. H. Field

    2008-09-24

    Physical time intervals are attributes of single physical object whereas physical space intervals are a relational attribute of two physical objects. Some consequences of the breaking of the space-time exchange symmetry inherent in the Lorentz transformation following from the above distinction are investigated. In particular, it is shown that the relativity of simultaneity and length contraction effects which naively follow from space-time symmetry of the Lorentz transformation do not occur. Seven laws describing the relation between observations of space intervals, time intervals and velocities in different reference frames are given. Only two of these laws are respected by conventional special relativity theory.

  16. Practical Timing Analysis of Asynchronous Systems Using Time Separation of Events \\Lambda

    E-Print Network [OSTI]

    Chakraborty, Supratik

    separations between appropriate events. Separations between all rele­ vant pairs of events are computed between appropriate events in the timing constraint graph. Separations between all rele­ vant pairs

  17. Time-stretch microscopy based on time-wavelength sequence reconstruction from wideband incoherent source

    SciTech Connect (OSTI)

    Zhang, Chi Xu, Yiqing; Wei, Xiaoming; Tsia, Kevin K.; Wong, Kenneth K. Y.

    2014-07-28

    Time-stretch microscopy has emerged as an ultrafast optical imaging concept offering the unprecedented combination of the imaging speed and sensitivity. However, dedicated wideband and coherence optical pulse source with high shot-to-shot stability has been mandated for time-wavelength mapping—the enabling process for ultrahigh speed wavelength-encoded image retrieval. From the practical point of view, exploiting methods to relax the stringent requirements (e.g., temporal stability and coherence) for the source of time-stretch microscopy is thus of great value. In this paper, we demonstrated time-stretch microscopy by reconstructing the time-wavelength mapping sequence from a wideband incoherent source. Utilizing the time-lens focusing mechanism mediated by a narrow-band pulse source, this approach allows generation of a wideband incoherent source, with the spectral efficiency enhanced by a factor of 18. As a proof-of-principle demonstration, time-stretch imaging with the scan rate as high as MHz and diffraction-limited resolution is achieved based on the wideband incoherent source. We note that the concept of time-wavelength sequence reconstruction from wideband incoherent source can also be generalized to any high-speed optical real-time measurements, where wavelength is acted as the information carrier.

  18. Timing analysis of PWR fuel pin failures

    SciTech Connect (OSTI)

    Jones, K.R.; Wade, N.L.; Katsma, K.R.; Siefken, L.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Straka, M. (Halliburton NUS, Idaho Falls, ID (United States))

    1992-09-01

    This report discusses research conducted to develop and demonstrate a methodology for calculation of the time interval between receipt of the containment isolation signals and the first fuel pin failure for loss-of-coolant accidents (LOCAs). Demonstration calculations were performed for a Babcock and Wilcox (B W) design (Oconee) and a Westinghouse (W) four-loop design (Seabrook). Sensitivity studies were performed to assess the impacts of fuel pin burnup, axial peaking factor, break size, emergency core cooling system availability, and main coolant pump trip on these times. The analysis was performed using the following codes: FRAPCON-2, for the calculation of steady-state fuel behavior; SCDAP/RELAP5/MOD3 and TRACPF1/MOD1, for the calculation of the transient thermal-hydraulic conditions in the reactor system; and FRAP-T6, for the calculation of transient fuel behavior. In addition to the calculation of fuel pin failure timing, this analysis provides a comparison of the predicted results of SCDAP/RELAP5/MOD3 and TRAC-PF1/MOD1 for large-break LOCA analysis. Using SCDAP/RELAP5/MOD3 thermal-hydraulic data, the shortest time intervals calculated between initiation of containment isolation and fuel pin failure are 10.4 seconds and 19.1 seconds for the B W and W plants, respectively. Using data generated by TRAC-PF1/MOD1, the shortest intervals are 10.3 seconds and 29.1 seconds for the B W and W plants, respectively. These intervals are for a double-ended, offset-shear, cold leg break, using the technical specification maximum peaking factor and applied to fuel with maximum design burnup. Using peaking factors commensurate with actual burnups would result in longer intervals for both reactor designs. This document provides appendices K and L of this report which provide plots for the timing analysis of PWR fuel pin failures for Oconee and Seabrook respectively.

  19. Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting

    E-Print Network [OSTI]

    Boyer, Edmond

    Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage on whether their rate of energy consumption is (i) more than or (ii) no more than the storage unit

  20. Science All NYT HOME PAGE MY TIMES TODAY'S PAPER VIDEO MOST POPULAR TIMES TOPICS

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    Science All NYT Science HOME PAGE MY TIMES TODAY'S PAPER VIDEO MOST POPULAR TIMES TOPICS Get Home said the sparks of light gave the opportunity to do spectroscopy, looking for specific colors of light light produced by rubbing -- goes back at least four centuries to Sir Francis Bacon, the English

  1. Nordic Journal of Computing 10(2003), 135. TIMED CSP = CLOSED TIMED -AUTOMATA

    E-Print Network [OSTI]

    Ouaknine, Joël

    2003-01-01

    ) which may then be verified using the model checker FDR. We characterize the expressive power to ver- ify specifications on certain dense-time systems using the model checker FDR2 [23, 24-based approach for Timed CSP is that verification can be carried out on the model checker FDR, as dis- cussed

  2. Nordic Journal of Computing 10(2003), 1--35. TIMED CSP = CLOSED TIMED #AUTOMATA

    E-Print Network [OSTI]

    Ouaknine, Joël

    2003-01-01

    ) which may then be verified using the model checker FDR. We characterize the expressive power to ver­ ify specifications on certain dense­time systems using the model checker FDR 2 [23, 24­based approach for Timed CSP is that verification can be carried out on the model checker FDR, as dis­ cussed

  3. Tunneling time in attosecond experiments and time-energy uncertainty relation

    E-Print Network [OSTI]

    Ossama Kullie

    2015-07-24

    In this work we present a theoretical model supported with a physical reasoning leading to a relation which performs an excellent estimation for the tunneling time in attosecond and strong field experiments, where we address the important case of the He-atom \\cite{Eckle:2008s,Eckle:2008}. Our tunneling time estimation is found by utilizing the time-energy uncertainty relation and represents a quantum clock. The tunneling time is also featured as the time of passage (at the exit of the tunnel) similarly to the Einstein's {\\it photon box Gedanken experiment}. Our work tackles an important study case for the theory of time in quantum mechanics and is very promising for the search for a (general) time operator in quantum mechanics. The work can be seen as a new fundamental step in dealing with the tunneling time in strong field and ultra-fast science, and is appealing for more elaborate treatments using quantum wave packet dynamics and especially for complex atoms and molecules.

  4. Managing Contention and Timing Constraints in a RealTime Database System \\Lambda

    E-Print Network [OSTI]

    Son, Sang H.

    22903, USA Abstract Previous work in real­time database management systems (RT­DBMS) has primarily based an actual RT­ DBMS on a real­time microkernel operating system. A real RT­DBMS must confront many practical of con­ structing a RT­DBMS is divided into three basic prob­ lems: dealing with resource contention

  5. Timing Gamma-ray Pulsars with the Fermi Large Area Telescope: Timing Noise and Astrometry

    E-Print Network [OSTI]

    Kerr, Matthew; Johnston, Simon; Shannon, Ryan; Camilo, Fernando

    2015-01-01

    We have constructed timing solutions for 81 gamma-ray pulsars covering more than five years of Fermi data. The sample includes 37 radio-quiet or radio-faint pulsars which cannot be timed with other telescopes. These timing solutions and the corresponding pulse times of arrival are prerequisites for further study, e.g. phase-resolved spectroscopy or searches for mode switches. Many gamma-ray pulsars are strongly affected by timing noise, and we present a new method for characterizing the noise process and mitigating its effects on other facets of the timing model. We present an analysis of timing noise over the population using a new metric for characterizing its strength and spectral shape, namely its time-domain correlation. The dependence of the strength on spin frequency and spin-down rate is in good agreement with previous studies. We find that noise process power spectra $S(f)$ for unrecycled pulsars are steep, with strong correlations over our entire data set and spectral indices $S(f)\\propto f^{-\\alpha...

  6. Horizontal structure of winter time 250 mb jet stream variations on the fifteen day time scale 

    E-Print Network [OSTI]

    Park, Sangwook

    1993-01-01

    The horizontal structure of the 250 mb jet stream on the fifteen-day time scale during Northern Hemisphere winter is presented. The winter season is divided into six fifteen-day periods for the 24-year NMC data set. The fifteen-day time...

  7. VIRTUAL TIME BASED DYNAMIC LOAD MANAGEMENT IN THE TIME WARP OPERATING SYSTEM

    E-Print Network [OSTI]

    California at Los Angeles, University of

    VIRTUAL TIME BASED DYNAMIC LOAD MANAGEMENT IN THE TIME WARP OPERATING SYSTEM Peter L. Reiher Jet on parallel machines. Recently TWOS has been substantially improved by the addition of dynamic load management to processors. Because TWOS uses optimistic synchronization, existing load management theory, which tends

  8. A Real-time Framework for Model Predictive Control of Continuous-Time Nonlinear Systems

    E-Print Network [OSTI]

    Sontag, Eduardo

    for piecewise constant NMPC of continuous-time processes. Index Terms-- nonlinear model predictive control, real-time optimization, optimal control, piecewise constant control I. INTRODUCTION Model predictive control (MPC horizon, open-loop optimal control problem. The unprecedented industrial success of MPC ap- proaches based

  9. On hitting times and fastest strong stationary times for skip-free and more general chains

    E-Print Network [OSTI]

    Fill, James Allen

    integers as state space is a chain for which upward jumps may be only of unit size; there is no restriction-free chain and any d, the passage time distribution from state 0 to state d. When the nonzero eigenvalues j of the generator on {0, . . . , d}, with d made absorbing, are all real, their result states that the passage time

  10. Optimal Trained Space-Time Modulation over a Rician Time-Varying Channel

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    Optimal Trained Space-Time Modulation over a Rician Time-Varying Channel Christian B. Peel and A investigation of modulation techniques that can handle temporally selec- tive fading. Though trained modulation for trained modulation, for example, which assume that the channel is known by the receiver. In the case

  11. Environmental education: A time of change, a time for change Matt Keene a,

    E-Print Network [OSTI]

    Blumstein, Daniel T.

    Environmental education: A time of change, a time for change§ Matt Keene a, *, Daniel T. Blumstein b,1 a United States Environmental Protection Agency, 1200 Pennsylvania Avenue, NW (1807T) Washington, 621 Young Drive South, Los Angeles, CA 90095-1606, United States The field of environmental education

  12. Quantitative analysis of real-time systems using priced timed automata

    E-Print Network [OSTI]

    Doyen, Laurent

    Aalborg Universitet 9220 Aalborg � ­ Denmark The problems of time-dependent behavior in general- tional key quantities include energy and mem- ory consumption, in communication networks required band for a given production are crucial quantities. The extended notion of priced or weighted timed automata has

  13. Words at the Right Time: Real-Time Dialogues with the WITAS Unmanned Aerial Vehicle

    E-Print Network [OSTI]

    Doherty, Patrick

    Words at the Right Time: Real-Time Dialogues with the WITAS Unmanned Aerial Vehicle Extended UAV (Unmanned Aerial Vehicle), in our case a helicopter. Its dialogue-system subprojects address Unmanned Aerial Vehicle Project 14,15] is an ambitious, long- term basic research project whose main

  14. Can biomass time series be reliably assessed from CPUE time series data Francis Lalo1

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    1 Can biomass time series be reliably assessed from CPUE time series data only? Francis Laloë1 to abundance. This means (i) that catchability is constant and (ii) that all the biomass is catchable. If so, relative variations in CPUE indicate the same relative variations in biomass. Myers and Worm consider

  15. Time at the Royal Observatory The rotation of the Earth gives us two kinds of time (1) ordinary

    E-Print Network [OSTI]

    Glass, Ian S.

    Time at the Royal Observatory ISG STAR TIME The rotation of the Earth gives us two kinds of time (1) ordinary Sun-related time of 24 hours and (2) Sidereal time relating to the stars. This means that a star's position in the sky is always the same at the same sidereal time. A sidereal day is shorter by about four

  16. 03.612 Time Off for Voting. 1. Purpose. To provide staff members a reasonable period of time off

    E-Print Network [OSTI]

    03.612 Time Off for Voting. 1. Purpose. To provide staff members a reasonable period of time off a reasonable period of time off during the regular work day for voting on an official election day. This time should be reported as time worked and is not charged against vacation leave, comp time or salary

  17. Robust Speaker Verification Using Short-Time Frequency with Long-Time Window and Fusion of Multi-Resolutions

    E-Print Network [OSTI]

    Mak, Brian Kan-Wing

    Robust Speaker Verification Using Short-Time Frequency with Long-Time Window and Fusion of Multi, the feature analysis of short-time frequency with long-time window (SFLW) is a compact feature characteristics and long- time resolution at the same time. Secondly, the fusion of multi-resolutions is used

  18. Topology of Vacuum Space-Time

    E-Print Network [OSTI]

    Y. M. Cho

    2007-03-02

    We present a topological classification of vacuum space-time. Assuming the 3-dimensional space allows a global chart, we show that the static vacuum space-time of Einstein's theory can be classified by the knot topology $\\pi_3(S^3)=\\pi_3(S^2)$. Viewing Einstein's theory as a gauge theory of Lorentz group and identifying the gravitational connection as the gauge potential of Lorentz group, we construct all possible vacuum gravitational connections which give a vanishing curvature tensor. With this we show that the vacuum connection has the knot topology, the same topology which describes the multiple vacua of SU(2) gauge theory. We discuss the physical implications of our result in quantum gravity.

  19. Timing discriminator using leading-edge extrapolation

    DOE Patents [OSTI]

    Gottschalk, B.

    1981-07-30

    A discriminator circuit to recover timing information from slow-rising pulses by means of an output trailing edge, a fixed time after the starting corner of the input pulse, which is nearly independent of risetime and threshold setting is described. This apparatus comprises means for comparing pulses with a threshold voltage; a capacitor to be charged at a certain rate when the input signal is one-third threshold voltage, and at a lower rate when the input signal is two-thirds threshold voltage; current-generating means for charging the capacitor; means for comparing voltage capacitor with a bias voltage; a flip-flop to be set when the input pulse reaches threshold voltage and reset when capacitor voltage reaches the bias voltage; and a clamping means for discharging the capacitor when the input signal returns below one-third threshold voltage.

  20. Time scales in nuclear giant resonances

    E-Print Network [OSTI]

    WD Heiss; RG Nazmitdinov; FD Smit

    2009-12-18

    We propose a general approach to characterise fluctuations of measured cross sections of nuclear giant resonances. Simulated cross sections are obtained from a particular, yet representative self-energy which contains all information about fragmentations. Using a wavelet analysis, we demonstrate the extraction of time scales of cascading decays into configurations of different complexity of the resonance. We argue that the spreading widths of collective excitations in nuclei are determined by the number of fragmentations as seen in the power spectrum. An analytic treatment of the wavelet analysis using a Fourier expansion of the cross section confirms this principle. A simple rule for the relative life times of states associated with hierarchies of different complexity is given.

  1. Hyperpolarized Nanodiamond with Long Spin Relaxation Times

    E-Print Network [OSTI]

    Ewa Rej; Torsten Gaebel; Thomas Boele; David E. J. Waddington; David J. Reilly

    2015-02-22

    The use of hyperpolarized agents in magnetic resonance (MR), such as 13C-labeled compounds, enables powerful new imaging and detection modalities that stem from a 10,000-fold boost in signal. A major challenge for the future of the hyperpolarizaton technique is the inherently short spin relaxation times, typically nanodiamond (ND) can be hyperpolarized at cryogenic and room temperature without the use of toxic free- radicals, and, owing to their solid-state environment, exhibit relaxation times exceeding 1 hour. Combined with the already established applications of NDs in the life-sciences as inexpensive fluorescent markers and non-cytotoxic substrates for gene and drug delivery, these results extend the theranostic capabilities of nanoscale diamonds into the domain of hyperpolarized MR.

  2. Visualizations for Real-time Pricing Demonstration

    SciTech Connect (OSTI)

    Marinovici, Maria C.; Hammerstrom, Janelle L.; Widergren, Steven E.; Dayley, Greg K.

    2014-10-13

    In this paper, the visualization tools created for monitoring the operations of a real-time pricing demonstration system that runs at a distribution feeder level are presented. The information these tools provide gives insights into demand behavior from automated price responsive devices, distribution feeder characteristics, impact of weather on system’s development, and other significant dynamics. Given the large number of devices that bid into a feeder-level real-time electricity market, new techniques are explored to summarize the present state of the system and contrast that with previous trends as well as future projections. To better understand the system behavior and correctly inform decision-making procedures, effective visualization of the data is imperative.

  3. LHC RF System Time-Domain Simulation

    SciTech Connect (OSTI)

    Mastorides, T.; Rivetta, C.

    2010-09-14

    Non-linear time-domain simulations have been developed for the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC). These simulations capture the dynamic behavior of the RF station-beam interaction and are structured to reproduce the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They are also a valuable tool for the study of diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Results from these studies and related measurements from PEP-II and LHC have been presented in multiple places. This report presents an example of the time-domain simulation implementation for the LHC.

  4. One-time pad booster for Internet

    E-Print Network [OSTI]

    Geraldo A. Barbosa

    2007-04-11

    One-time pad encrypted files can be sent through Internet channels using current Internet protocols. However, the need for renewing shared secret keys make this method unpractical. This work shows how users can use a fast physical random generator based on fluctuations of a light field and the Internet channel to directly boost key renewals. The transmitted signals are deterministic but carries imprinted noise that cannot be eliminated by the attacker. Thus, a one-time pad for Internet can be made practical. Security is achieved without third parties and not relying on the difficulty of factoring numbers in primes. An informational fragility to be avoided is discussed. Information-theoretic analysis is presented and bounds for secure operation are determined.

  5. Modern space-time and undecidability

    E-Print Network [OSTI]

    Rodolfo Gambini; Jorge Pullin

    2008-01-16

    The picture of space-time that Minkowski created in 1907 has been followed by two important developments in physics not contained in the original picture: general relativity and quantum mechanics. We will argue that the use of concepts of those theories to construct space-time implies conceptual modifications in quantum mechanics. In particular one can construct a viable picture of quantum mechanics without a reduction process that has outcomes equivalent to a picture with a reduction process. One therefore has two theories that are entirely equivalent experimentally but profoundly different in the description of reality they give. This introduces a fundamental level of undecidability in physics of a kind that has not been present before. We discuss some of the implications.

  6. Time varying arctic climate change amplification

    SciTech Connect (OSTI)

    Chylek, Petr [Los Alamos National Laboratory; Dubey, Manvendra K [Los Alamos National Laboratory; Lesins, Glen [DALLHOUSIE U; Wang, Muyin [NOAA/JISAO

    2009-01-01

    During the past 130 years the global mean surface air temperature has risen by about 0.75 K. Due to feedbacks -- including the snow/ice albedo feedback -- the warming in the Arctic is expected to proceed at a faster rate than the global average. Climate model simulations suggest that this Arctic amplification produces warming that is two to three times larger than the global mean. Understanding the Arctic amplification is essential for projections of future Arctic climate including sea ice extent and melting of the Greenland ice sheet. We use the temperature records from the Arctic stations to show that (a) the Arctic amplification is larger at latitudes above 700 N compared to those within 64-70oN belt, and that, surprisingly; (b) the ratio of the Arctic to global rate of temperature change is not constant but varies on the decadal timescale. This time dependence will affect future projections of climate changes in the Arctic.

  7. Energy and time in open quantum systems

    E-Print Network [OSTI]

    H. Eleuch; I. Rotter

    2015-06-02

    The eigenvalues of a non-Hermitian Hamilton operator are complex and provide not only the energies but also the lifetimes of the states of the system. They show non-analytical changes under the influence of singular (exceptional) points. The eigenfunctions are biorthogonal, characterized quantitatively by the so-called phase rigidity, which is reduced near to exceptional points. Numerical studies show the influence of these singular points on the dynamics of open quantum systems. When two states are neighboring in energy or lifetime, they cause a stabilization of the system which is irreversible; change the time behavior of the system; and create local structures that can be described well by a Hermitian Hamilton operator. In these structures, the relation between time and energy is hidden.

  8. Long Time Evolution of Phase Oscillator Systems

    E-Print Network [OSTI]

    Edward Ott; Thomas M. Antonsen

    2009-04-16

    It is shown, under weak conditions, that the dynamical evolution of an important class of large systems of globally coupled, heterogeneous frequency, phase oscillators is, in an appropriate physical sense, time-asymptotically attracted toward a reduced manifold of system states. This manifold, which is invariant under the system evolution, was previously known and used to facilitate the discovery of attractors and bifurcations of such systems. The result of this paper establishes that attractors for the order parameter dynamics obtained by restriction to this reduced manifold are, in fact, the only such attractors of the full system. Thus all long time dynamical behavior of the order parameters of these systems can be obtained by restriction to the reduced manifold.

  9. Timing analysis of PWR fuel pin failures

    SciTech Connect (OSTI)

    Jones, K.R.; Wade, N.L.; Katsma, K.R.; Siefken, L.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Straka, M. (Halliburton NUS, Idaho Falls, ID (United States))

    1992-09-01

    Research has been conducted to develop and demonstrate a methodology for calculation of the time interval between receipt of the containment isolation signals and the first fuel pin failure for loss-of-coolant accidents (LOCAs). Demonstration calculations were performed for a Babcock and Wilcox (B W) design (Oconee) and a Westinghouse (W) four-loop design (Seabrook). Sensitivity studies were performed to assess the impacts of fuel pin bumup, axial peaking factor, break size, emergency core cooling system availability, and main coolant pump trip on these times. The analysis was performed using the following codes: FRAPCON-2, for the calculation of steady-state fuel behavior; SCDAP/RELAP5/MOD3 and TRACPF1/MOD1, for the calculation of the transient thermal-hydraulic conditions in the reactor system; and FRAP-T6, for the calculation of transient fuel behavior. In addition to the calculation of fuel pin failure timing, this analysis provides a comparison of the predicted results of SCDAP/RELAP5/MOD3 and TRAC-PFL/MOD1 for large-break LOCA analysis. Using SCDAP/RELAP5/MOD3 thermal-hydraulic data, the shortest time intervals calculated between initiation of containment isolation and fuel pin failure are 10.4 seconds and 19.1 seconds for the B W and W plants, respectively. Using data generated by TRAC-PF1/MOD1, the shortest intervals are 10.3 seconds and 29.1 seconds for the B W and W plants, respectively. These intervals are for a double-ended, offset-shear, cold leg break, using the technical specification maximum peaking factor and applied to fuel with maximum design bumup. Using peaking factors commensurate widi actual bumups would result in longer intervals for both reactor designs. This document also contains appendices A through J of this report.

  10. Matter on granular space-time

    E-Print Network [OSTI]

    Alexander N. Jourjine

    2010-03-12

    We develop further the formalism of the non-Abelian gauge field theory on a cell complex space-time and show how the gauge-invariant action and the equations of motion for gauge fields interacting with spinors can be written without a reference to the geometrical nature of the cells of the cell complex. The general results are illustrated with examples of solutions of equations of motion for U(N) and SU(N) gauge groups.

  11. Time changes in gradient and observed winds 

    E-Print Network [OSTI]

    Carlson, Ronald Dale

    1972-01-01

    OF FIGURES. 1. INXRODUCTION. 2. BACKGROUND AND STATEI'U':NT OF THE PROBLEM. . a. Previous studies. b. Statement of the problem. c. Objectives. 3. THEORETICAL CONSIDERATIONS. a. Gradient wind equation. b. Time rate-of-change of the gradient wind. . 4... for curvature of the height contours on the upper-level synoptic charts. Of the forces and accelerations contained in the complete horizontal equations of motion, those which do not appear in the gradient wind approximation are the frictional force...

  12. Random Matrix Spectra as a Time Series

    E-Print Network [OSTI]

    Ruben Fossion; Gamaliel Torres Vargas; Juan Carlos López Vieyra

    2013-11-23

    Spectra of ordered eigenvalues of finite Random Matrices are interpreted as a time series. Dataadaptive techniques from signal analysis are applied to decompose the spectrum in clearly differentiated trend and fluctuation modes, avoiding possible artifacts introduced by standard unfolding techniques. The fluctuation modes are scale invariant and follow different power laws for Poisson and Gaussian ensembles, which already during the unfolding allows to distinguish the two cases.

  13. Proton Emission Times in Spectator Fragmentation

    E-Print Network [OSTI]

    C. Schwarz; for the ALADIN collaboration

    2000-09-05

    Proton-proton correlations from spectator decays following Au + Au collisions at 1000 AMeV have been measured with an highly efficient detector hodoscope. The constructed correlation functions indicate a moderate expansion and low breakup densities similar to assumptions made in statistical multifragmentation models. In agreement with a volume breakup rather short time scales were deduced employing directional cuts in proton-proton correlations.

  14. Cosmological Time Dilation in Gamma Ray Bursts?

    E-Print Network [OSTI]

    David Band

    1994-07-01

    Norris et al. (1994) report that the temporal structure of faint gamma ray bursts is longer than that of bright bursts, as expected for time dilation in the cosmological models of burst origin. I show that the observed trends can easily be produced by a burst luminosity function and thus may not result from cosmological effects. A cosmological signature may be present, but the tests Norris et al. present are not powerful enough to detect these signatures.

  15. Multiple Time Series 7.1 Introduction

    E-Print Network [OSTI]

    Penny, Will

    , W.D. Penny, April 2000. 7.2.1 Cross­correlation is asymmetric First, we re­cap as to why the auto, W.D. Penny, April 2000. 89 (a) 0 20 40 60 80 100 -2 -1 0 1 2 3 4 Figure 7.1: Signals x t (top) and y this should occur ? #12; 90 Signal Processing Course, W.D. Penny, April 2000. 7.2.3 Time­Delay Estimation

  16. Real-time applications of neural nets

    SciTech Connect (OSTI)

    Spencer, J.E.

    1989-05-01

    Producing, accelerating and colliding very high power, low emittance beams for long periods is a formidable problem in real-time control. As energy has grown exponentially in time so has the complexity of the machines and their control systems. Similar growth rates have occurred in many areas, e.g., improved integrated circuits have been paid for with comparable increases in complexity. However, in this case, reliability, capability and cost have improved due to reduced size, high production and increased integration which allow various kinds of feedback. In contrast, most large complex systems (LCS) are perceived to lack such possibilities because only one copy is made. Neural nets, as a metaphor for LCS, suggest ways to circumvent such limitations. It is argued that they are logically equivalent to multi-loop feedback/forward control of faulty systems. While complimentary to AI, they mesh nicely with characteristics desired for real-time systems. Such issues are considered, examples given and possibilities discussed. 21 refs., 6 figs.

  17. Real Time Simulation of Power Grid Disruptions

    SciTech Connect (OSTI)

    Chinthavali, Supriya; Dimitrovski, Aleksandar D; Fernandez, Steven J; Groer, Christopher S; Nutaro, James J; Olama, Mohammed M; Omitaomu, Olufemi A; Shankar, Mallikarjun; Spafford, Kyle L; Vacaliuc, Bogdan

    2012-11-01

    DOE-OE and DOE-SC workshops (Reference 1-3) identified the key power grid problem that requires insight addressable by the next generation of exascale computing is coupling of real-time data streams (1-2 TB per hour) as the streams are ingested to dynamic models. These models would then identify predicted disruptions in time (2-4 seconds) to trigger the smart grid s self healing functions. This project attempted to establish the feasibility of this approach and defined the scientific issues, and demonstrated example solutions to important smart grid simulation problems. These objectives were accomplished by 1) using the existing frequency recorders on the national grid to establish a representative and scalable real-time data stream; 2) invoking ORNL signature identification algorithms; 3) modeling dynamically a representative region of the Eastern interconnect using an institutional cluster, measuring the scalability and computational benchmarks for a national capability; and 4) constructing a prototype simulation for the system s concept of smart grid deployment. The delivered ORNL enduring capability included: 1) data processing and simulation metrics to design a national capability justifying exascale applications; 2) Software and intellectual property built around the example solutions; 3) demonstrated dynamic models to design few second self-healing.

  18. Jacobi's Principle and the Disappearance of Time

    E-Print Network [OSTI]

    Sean B. Gryb

    2010-02-23

    Jacobi's action principle is known to lead to a problem of time. For example, the timelessness of the Wheeler-DeWitt equation can be seen as resulting from using Jacobi's principle to define the dynamics of 3-geometries through superspace. In addition, using Jacobi's principle for non-relativistic particles is equivalent classically to Newton's theory but leads to a time-independent Schrodinger equation upon Dirac quantization. In this paper, we study the mechanism for the disappearance of time as a result of using Jacobi's principle in these simple particle models. We find that the path integral quantization very clearly elucidates the physical mechanism for the timeless of the quantum theory as well as the emergence of duration at the classical level. Physically, this is the result of a superposition of clocks which occurs in the quantum theory due to a sum over all histories. Mathematically, the timelessness is related to how the gauge fixing functions impose the boundary conditions in the path integral.

  19. Efficient discrete-time simulations of continuous-time quantum query algorithms

    E-Print Network [OSTI]

    R. Cleve; D. Gottesman; M. Mosca; R. D. Somma; D. L. Yonge-Mallo

    2008-11-26

    The continuous-time query model is a variant of the discrete query model in which queries can be interleaved with known operations (called "driving operations") continuously in time. Interesting algorithms have been discovered in this model, such as an algorithm for evaluating nand trees more efficiently than any classical algorithm. Subsequent work has shown that there also exists an efficient algorithm for nand trees in the discrete query model; however, there is no efficient conversion known for continuous-time query algorithms for arbitrary problems. We show that any quantum algorithm in the continuous-time query model whose total query time is T can be simulated by a quantum algorithm in the discrete query model that makes O[T log(T) / log(log(T))] queries. This is the first upper bound that is independent of the driving operations (i.e., it holds even if the norm of the driving Hamiltonian is very large). A corollary is that any lower bound of T queries for a problem in the discrete-time query model immediately carries over to a lower bound of \\Omega[T log(log(T))/log (T)] in the continuous-time query model.

  20. On hitting times and fastest strong stationary times for skip-free chains

    E-Print Network [OSTI]

    Fill, James Allen

    2007-01-01

    An (upward) skip-free Markov chain with the set of nonnegative integers as state space is a chain for which upward jumps may be only of unit size; there is no restriction on downward jumps. In a 1987 paper, Brown and Shao determined, for an irreducible continuous-time skip-free chain and any d, the passage time distribution from state 0 to state d. When the nonzero eigenvalues nu_j of the generator are all real, their result states that the passage time is distributed as the sum of d independent exponential random variables with rates nu_j. We give another proof of their theorem. In the case of birth-and-death chains, our proof leads to an explicit representation of the passage time as a sum of independent exponential random variables. Diaconis and Miclo recently obtained the first such representation, but our construction is much simpler. We obtain similar (and new) results for a fastest strong stationary time T of an ergodic continuous-time skip-free chain with stochastically monotone time-reversal started ...