National Library of Energy BETA

Sample records for range error creating

  1. Creating Mountains out of Mole Hills: Automatic Identification of Hills and Ranges Using Morphometric Analysis

    E-Print Network [OSTI]

    1 Creating Mountains out of Mole Hills: Automatic Identification of Hills and Ranges Using that comprise them (that mountain ranges are a collection of clustered yet individually identifiable mountains for automatically discerning mountain ranges as well as the smaller hills that constitute them. A mountainous region

  2. Dose Uncertainties in IMPT for Oropharyngeal Cancer in the Presence of Anatomical, Range, and Setup Errors

    SciTech Connect (OSTI)

    Kraan, Aafke C., E-mail: aafke.kraan@pi.infn.it [Erasmus MC Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Water, Steven van de; Teguh, David N.; Al-Mamgani, Abrahim [Erasmus MC Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Madden, Tom; Kooy, Hanne M. [Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (United States); Heijmen, Ben J.M.; Hoogeman, Mischa S. [Erasmus MC Daniel den Hoed Cancer Center, Rotterdam (Netherlands)

    2013-12-01

    Purpose: Setup, range, and anatomical uncertainties influence the dose delivered with intensity modulated proton therapy (IMPT), but clinical quantification of these errors for oropharyngeal cancer is lacking. We quantified these factors and investigated treatment fidelity, that is, robustness, as influenced by adaptive planning and by applying more beam directions. Methods and Materials: We used an in-house treatment planning system with multicriteria optimization of pencil beam energies, directions, and weights to create treatment plans for 3-, 5-, and 7-beam directions for 10 oropharyngeal cancer patients. The dose prescription was a simultaneously integrated boost scheme, prescribing 66 Gy to primary tumor and positive neck levels (clinical target volume-66 Gy; CTV-66 Gy) and 54 Gy to elective neck levels (CTV-54 Gy). Doses were recalculated in 3700 simulations of setup, range, and anatomical uncertainties. Repeat computed tomography (CT) scans were used to evaluate an adaptive planning strategy using nonrigid registration for dose accumulation. Results: For the recalculated 3-beam plans including all treatment uncertainty sources, only 69% (CTV-66 Gy) and 88% (CTV-54 Gy) of the simulations had a dose received by 98% of the target volume (D98%) >95% of the prescription dose. Doses to organs at risk (OARs) showed considerable spread around planned values. Causes for major deviations were mixed. Adaptive planning based on repeat imaging positively affected dose delivery accuracy: in the presence of the other errors, percentages of treatments with D98% >95% increased to 96% (CTV-66 Gy) and 100% (CTV-54 Gy). Plans with more beam directions were not more robust. Conclusions: For oropharyngeal cancer patients, treatment uncertainties can result in significant differences between planned and delivered IMPT doses. Given the mixed causes for major deviations, we advise repeat diagnostic CT scans during treatment, recalculation of the dose, and if required, adaptive planning to improve adequate IMPT dose delivery.

  3. Locally Testing Direct Products in the Low Error Range Weizmann Institute

    E-Print Network [OSTI]

    Dinur, Irit

    acceptance probability of the test. We show that even if the test passes with small probability, > 0Locally Testing Direct Products in the Low Error Range Irit Dinur Weizmann Institute Dept Given a function f : X , its -wise direct prod- uct is the function F = f : X defined by: F(x1

  4. An interactive system for creating object models from range data based on simulated annealing

    SciTech Connect (OSTI)

    Hoff, W.A.; Hood, F.W.; King, R.H. [Colorado School of Mines, Golden, CO (United States). Center for Robotics and Intelligent Systems

    1997-05-01

    In hazardous applications such as remediation of buried waste and dismantlement of radioactive facilities, robots are an attractive solution. Sensing to recognize and locate objects is a critical need for robotic operations in unstructured environments. An accurate 3-D model of objects in the scene is necessary for efficient high level control of robots. Drawing upon concepts from supervisory control, the authors have developed an interactive system for creating object models from range data, based on simulated annealing. Site modeling is a task that is typically performed using purely manual or autonomous techniques, each of which has inherent strengths and weaknesses. However, an interactive modeling system combines the advantages of both manual and autonomous methods, to create a system that has high operator productivity as well as high flexibility and robustness. The system is unique in that it can work with very sparse range data, tolerate occlusions, and tolerate cluttered scenes. The authors have performed an informal evaluation with four operators on 16 different scenes, and have shown that the interactive system is superior to either manual or automatic methods in terms of task time and accuracy.

  5. Evaluation of an interactive technique for creating site models from range data

    SciTech Connect (OSTI)

    Wood, F.W.; Hoff, W.A.; King, R. [Colorado School of Mines, Golden, CO (United States)

    1997-10-01

    Recognizing and locating objects is crucial to robotic operations in unstructured environments. To satisfy this need, we have developed an interactive system for creating object models from range data based on simulated a annealing and supervisory control This interactive modeling system maximizes the advantages of both manual and autonomous methods while minimizing their weaknesses. Therefore, it should outperform purely autonomous or manual techniques. We have designed and executed experiments for the purpose of evaluating the performance of our application as compared to an identical but purely manually driven application. These experiments confirmed the following hypotheses: (1) Interactive modeling should outperform purely manual modeling in total task time and fitting accuracy. (2) Operator effort decreases significantly when utilizing interactive modeling. (3) User expertise does not have a significant effect on interactive modeling task time. (4) Minimal human interaction will increase performance on {open_quotes}easy{close_quotes} scenes. Using 14 subjects and 8 synthetically generated scenes, we recorded the task times and pose data and, from them, used analysis of variance (ANOVA) to test a set of hypotheses.

  6. SU-E-T-550: Range Effects in Proton Therapy Caused by Systematic Errors in the Stoichiometric Calibration

    SciTech Connect (OSTI)

    Doolan, P [University College London, London (United Kingdom); Massachusetts General Hospital, Boston, MA (United States); Dias, M [Massachusetts General Hospital, Boston, MA (United States); Dipartamento di Elettronica, Informazione e Bioingegneria - DEIB, Politecnico di Milano (Italy); Collins Fekete, C [Massachusetts General Hospital, Boston, MA (United States); Departement de physique, de genie physique et d'optique et Centre de recherche sur le cancer, Universite Laval, Quebec (Canada); Seco, J [Massachusetts General Hospital, Boston, MA (United States)

    2014-06-01

    Purpose: The procedure for proton treatment planning involves the conversion of the patient's X-ray CT from Hounsfield units into relative stopping powers (RSP), using a stoichiometric calibration curve (Schneider 1996). In clinical practice a 3.5% margin is added to account for the range uncertainty introduced by this process and other errors. RSPs for real tissues are calculated using composition data and the Bethe-Bloch formula (ICRU 1993). The purpose of this work is to investigate the impact that systematic errors in the stoichiometric calibration have on the proton range. Methods: Seven tissue inserts of the Gammex 467 phantom were imaged using our CT scanner. Their known chemical compositions (Watanabe 1999) were then used to calculate the theoretical RSPs, using the same formula as would be used for human tissues in the stoichiometric procedure. The actual RSPs of these inserts were measured using a Bragg peak shift measurement in the proton beam at our institution. Results: The theoretical calculation of the RSP was lower than the measured RSP values, by a mean/max error of - 1.5/-3.6%. For all seven inserts the theoretical approach underestimated the RSP, with errors variable across the range of Hounsfield units. Systematic errors for lung (average of two inserts), adipose and cortical bone were - 3.0/-2.1/-0.5%, respectively. Conclusion: There is a systematic underestimation caused by the theoretical calculation of RSP; a crucial step in the stoichiometric calibration procedure. As such, we propose that proton calibration curves should be based on measured RSPs. Investigations will be made to see if the same systematic errors exist for biological tissues. The impact of these differences on the range of proton beams, for phantoms and patient scenarios, will be investigated. This project was funded equally by the Engineering and Physical Sciences Research Council (UK) and Ion Beam Applications (Louvain-La-Neuve, Belgium)

  7. Error detection method

    DOE Patents [OSTI]

    Olson, Eric J.

    2013-06-11

    An apparatus, program product, and method that run an algorithm on a hardware based processor, generate a hardware error as a result of running the algorithm, generate an algorithm output for the algorithm, compare the algorithm output to another output for the algorithm, and detect the hardware error from the comparison. The algorithm is designed to cause the hardware based processor to heat to a degree that increases the likelihood of hardware errors to manifest, and the hardware error is observable in the algorithm output. As such, electronic components may be sufficiently heated and/or sufficiently stressed to create better conditions for generating hardware errors, and the output of the algorithm may be compared at the end of the run to detect a hardware error that occurred anywhere during the run that may otherwise not be detected by traditional methodologies (e.g., due to cooling, insufficient heat and/or stress, etc.).

  8. ERROR ANALYSIS OF COMPOSITE SHOCK INTERACTION PROBLEMS.

    SciTech Connect (OSTI)

    LEE,T.MU,Y.ZHAO,M.GLIMM,J.LI,X.YE,K.

    2004-07-26

    We propose statistical models of uncertainty and error in numerical solutions. To represent errors efficiently in shock physics simulations we propose a composition law. The law allows us to estimate errors in the solutions of composite problems in terms of the errors from simpler ones as discussed in a previous paper. In this paper, we conduct a detailed analysis of the errors. One of our goals is to understand the relative magnitude of the input uncertainty vs. the errors created within the numerical solution. In more detail, we wish to understand the contribution of each wave interaction to the errors observed at the end of the simulation.

  9. Creating a Star on Earth | Department of Energy

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

    Creating a Star on Earth Creating a Star on Earth March 5, 2014 - 11:45am Addthis An error occurred. Try watching this video on www.youtube.com, or enable JavaScript if it is...

  10. Nonparametric Regression with Correlated Errors Jean Opsomer

    E-Print Network [OSTI]

    Wang, Yuedong

    Nonparametric Regression with Correlated Errors Jean Opsomer Iowa State University Yuedong Wang Nonparametric regression techniques are often sensitive to the presence of correlation in the errors splines and wavelet regression under correlation, both for short-range and long-range dependence

  11. A Taxonomy of Number Entry Error Sarah Wiseman

    E-Print Network [OSTI]

    Subramanian, Sriram

    A Taxonomy of Number Entry Error Sarah Wiseman UCLIC MPEB, Malet Place London, WC1E 7JE sarah and the subsequent process of creating a taxonomy of errors from the information gathered. A total of 345 errors were. These codes are then organised into a taxonomy similar to that of Zhang et al (2004). We show how

  12. Range Fuels Commercial-Scale Biorefinery

    Broader source: Energy.gov [DOE]

    The Range Fuels commercial-scale biorefinery will use a variety of feedstocks to create cellulosic ethanol, methanol, and power.

  13. Creating the Permanent Prisoner

    E-Print Network [OSTI]

    Dolovich, Sharon

    2012-01-01

    Facing the Challenges of Prisoner Reentry (Washington, DC:Press, 2005). Creating the Permanent Prisoner | 137C. West, Data Brief: Prisoners at Yearend 2009—Advance

  14. How Magnetic Dimers Interact to Create Long-Range Order

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

    Improving Solar-Cell Efficiency How to Remove Tangles in Your DNA Stressing Out Copper TSVs with Temperature Lights, Conformational Change... Action Stability vs. Activity:...

  15. Radar range measurements in the atmosphere.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2013-02-01

    The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

  16. OF ENGINEERING CREATE. DISCOVER.

    E-Print Network [OSTI]

    Heller, Barbara

    IIT ARMOUR COLLEGE OF ENGINEERING CREATE. DISCOVER. FOLLOW YOUR PASSION. #12;WHY ENGINEERING AT IIT ARMOUR? Five Departments. One Distinctive Educational Experience. DEPARTMENT OF BIOMEDICAL ENGINEERING · Degree programs in cell and tissue engineering, medical imaging, and neural engineering

  17. Monte Carlo errors with less errors

    E-Print Network [OSTI]

    Ulli Wolff

    2006-11-29

    We explain in detail how to estimate mean values and assess statistical errors for arbitrary functions of elementary observables in Monte Carlo simulations. The method is to estimate and sum the relevant autocorrelation functions, which is argued to produce more certain error estimates than binning techniques and hence to help toward a better exploitation of expensive simulations. An effective integrated autocorrelation time is computed which is suitable to benchmark efficiencies of simulation algorithms with regard to specific observables of interest. A Matlab code is offered for download that implements the method. It can also combine independent runs (replica) allowing to judge their consistency.

  18. QUANTUM ERROR Osbert Bastani

    E-Print Network [OSTI]

    Reversible (unitary) Ancillary qbits Controlled gates (cX, cZ) #12;Measurement Deterministic Duplication;Decoding use ancillary bits to determine what error occurred #12;Decoding use ancillary bits to determine what error occurred set to 0 if first two bits equal, set to 1 if not #12;Decoding use ancillary bits

  19. Creating Sustainable Partnerships

    E-Print Network [OSTI]

    and security, and in doing so create economic opportunity for the nation 4 Managed by UT-Battelle for the U_1008 5 Managed by UT-Battelle for the U.S. Department of Energy Basic Applied Nuclear physics Condensed subsurface science Chemical engineering Applied materials S&E Applied nuclear S&TChemical and molecular

  20. In Search of a Taxonomy for Classifying Qualitative Spreadsheet Errors

    E-Print Network [OSTI]

    Przasnyski, Zbigniew; Seal, Kala Chand

    2011-01-01

    Most organizations use large and complex spreadsheets that are embedded in their mission-critical processes and are used for decision-making purposes. Identification of the various types of errors that can be present in these spreadsheets is, therefore, an important control that organizations can use to govern their spreadsheets. In this paper, we propose a taxonomy for categorizing qualitative errors in spreadsheet models that offers a framework for evaluating the readiness of a spreadsheet model before it is released for use by others in the organization. The classification was developed based on types of qualitative errors identified in the literature and errors committed by end-users in developing a spreadsheet model for Panko's (1996) "Wall problem". Closer inspection of the errors reveals four logical groupings of the errors creating four categories of qualitative errors. The usability and limitations of the proposed taxonomy and areas for future extension are discussed.

  1. Thermodynamics of error correction

    E-Print Network [OSTI]

    Pablo Sartori; Simone Pigolotti

    2015-04-24

    Information processing at the molecular scale is limited by thermal fluctuations. This can cause undesired consequences in copying information since thermal noise can lead to errors that can compromise the functionality of the copy. For example, a high error rate during DNA duplication can lead to cell death. Given the importance of accurate copying at the molecular scale, it is fundamental to understand its thermodynamic features. In this paper, we derive a universal expression for the copy error as a function of entropy production and dissipated work of the process. Its derivation is based on the second law of thermodynamics, hence its validity is independent of the details of the molecular machinery, be it any polymerase or artificial copying device. Using this expression, we find that information can be copied in three different regimes. In two of them, work is dissipated to either increase or decrease the error. In the third regime, the protocol extracts work while correcting errors, reminiscent of a Maxwell demon. As a case study, we apply our framework to study a copy protocol assisted by kinetic proofreading, and show that it can operate in any of these three regimes. We finally show that, for any effective proofreading scheme, error reduction is limited by the chemical driving of the proofreading reaction.

  2. Quantum error control codes 

    E-Print Network [OSTI]

    Abdelhamid Awad Aly Ahmed, Sala

    2008-10-10

    by SALAH ABDELHAMID AWAD ALY AHMED Submitted to the O–ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2008 Major Subject: Computer Science QUANTUM ERROR CONTROL CODES A... Members, Mahmoud M. El-Halwagi Anxiao (Andrew) Jiang Rabi N. Mahapatra Head of Department, Valerie Taylor May 2008 Major Subject: Computer Science iii ABSTRACT Quantum Error Control Codes. (May 2008) Salah Abdelhamid Awad Aly Ahmed, B.Sc., Mansoura...

  3. Error Dynamics: The Dynamic Emergence of Error Avoidance and

    E-Print Network [OSTI]

    Bickhard, Mark H.

    . Standard such notions are, however, arguably limited and bad notions, being based on untenable models of learning about error and of handling error knowledge constitute a complex major theme in evolution VICARIANTS Avoiding Error. The central theme is a progressive elaboration of kinds of dynamics that manage

  4. Creating a Star on Earth

    Office of Energy Efficiency and Renewable Energy (EERE)

    At the Energy Department's Princeton Plasma Physics Lab, scientists are trying to accomplish what was once considered the realm of science fiction: creating a star on Earth.

  5. Creating Value Wood Products Industry

    E-Print Network [OSTI]

    1 Creating Value for the Wood Products Industry Creating Value for the Wood Products Industry for the Wood Products Industry The forest industry contributes more than 50 percent of the total value of all assistance to the primary and value-added processing wood products industries in Louisiana. Since its

  6. Register file soft error recovery

    DOE Patents [OSTI]

    Fleischer, Bruce M.; Fox, Thomas W.; Wait, Charles D.; Muff, Adam J.; Watson, III, Alfred T.

    2013-10-15

    Register file soft error recovery including a system that includes a first register file and a second register file that mirrors the first register file. The system also includes an arithmetic pipeline for receiving data read from the first register file, and error detection circuitry to detect whether the data read from the first register file includes corrupted data. The system further includes error recovery circuitry to insert an error recovery instruction into the arithmetic pipeline in response to detecting the corrupted data. The inserted error recovery instruction replaces the corrupted data in the first register file with a copy of the data from the second register file.

  7. V-109: Google Chrome WebKit Type Confusion Error Lets Remote...

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

    to be executed on the target user's system. A remote user can create specially crafted HTML that, when loaded by the target user, will trigger a type confusion error in WebKit and...

  8. Creating Wave-Focusing Materials

    E-Print Network [OSTI]

    A. G. Ramm

    2008-05-16

    Basic ideas for creating wave-focusing materials by injecting small particles in a given material are described. The number of small particles to be injected around any point is calculated. Inverse scattering problem with fixed wavenumber and fixed incident direction of the plane acoustic wave is formulated and solved.

  9. How to create a universe

    E-Print Network [OSTI]

    Gordon McCabe

    2007-02-27

    The purpose of this paper is (i) to expound the specification of a universe, according to those parts of mathematical physics which have been experimentally and observationally verified in our own universe; and (ii) to expound the possible means of creating a universe in the laboratory.

  10. Photometric Redshifts and Photometry Errors

    E-Print Network [OSTI]

    D. Wittman; P. Riechers; V. E. Margoniner

    2007-09-21

    We examine the impact of non-Gaussian photometry errors on photometric redshift performance. We find that they greatly increase the scatter, but this can be mitigated to some extent by incorporating the correct noise model into the photometric redshift estimation process. However, the remaining scatter is still equivalent to that of a much shallower survey with Gaussian photometry errors. We also estimate the impact of non-Gaussian errors on the spectroscopic sample size required to verify the photometric redshift rms scatter to a given precision. Even with Gaussian {\\it photometry} errors, photometric redshift errors are sufficiently non-Gaussian to require an order of magnitude larger sample than simple Gaussian statistics would indicate. The requirements increase from this baseline if non-Gaussian photometry errors are included. Again the impact can be mitigated by incorporating the correct noise model, but only to the equivalent of a survey with much larger Gaussian photometry errors. However, these requirements may well be overestimates because they are based on a need to know the rms, which is particularly sensitive to tails. Other parametrizations of the distribution may require smaller samples.

  11. Alternating current long range alpha particle detector

    DOE Patents [OSTI]

    MacArthur, D.W.; McAtee, J.L.

    1993-02-16

    An alpha particle detector, utilizing alternating currents, which is capable of detecting alpha particles from distinct sources. The use of alternating currents allows use of simpler ac circuits which, in turn, are not susceptible to dc error components. It also allows the benefit of gas gain, if desired. In the invention, a voltage source creates an electric field between two conductive grids, and between the grids and a conductive enclosure. Air containing air ions created by collision with alpha particles is drawn into the enclosure and detected. In some embodiments, the air flow into the enclosure is interrupted, creating an alternating flow of ions. In another embodiment, a modulated voltage is applied to the grid, also modulating the detection of ions.

  12. DATA COMPRESSION USING WAVELETS: ERROR ...

    E-Print Network [OSTI]

    1910-90-11

    algorithms that introduce differences between the original and compressed data in ... to choose an error metric that parallels the human visual system, so that image .... signal data along a communications channel, one sends integer codes that ...

  13. Thermodynamic cost of creating correlations

    E-Print Network [OSTI]

    Marcus Huber; Martí Perarnau-Llobet; Karen V. Hovhannisyan; Paul Skrzypczyk; Claude Klöckl; Nicolas Brunner; Antonio Acín

    2015-01-15

    We investigate the fundamental limitations imposed by thermodynamics for creating correlations. Considering a collection of initially uncorrelated thermal quantum systems, we ask how much classical and quantum correlations can be obtained via a cyclic Hamiltonian process. We derive bounds on both the mutual information and entanglement of formation, as a function of the temperature of the systems and the available energy. While for a finite number of systems there is a maximal temperature allowing for the creation of entanglement, we show that genuine multipartite entanglement---the strongest form of entanglement in multipartite systems---can be created at any temperature when sufficiently many systems are considered. This approach may find applications, e.g. in quantum information processing, for physical platforms in which thermodynamic considerations cannot be ignored.

  14. The Challenge of Quantum Error Correction.

    E-Print Network [OSTI]

    Fominov, Yakov

    in the design of physical bits. #12;What we need Hardware requirements: 1. Many 103-104 / R individual bits (R flip classical error b. Phase error 0exp( ( ) )z i E t dt = - Fluctuates 1. Need hardware error #12;Classical error correction by the software and hardware. , / 2 0 Hardware error correction: Ising

  15. Project ATHENA creates surrogate human organ systems

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

    Project ATHENA creates surrogate human organ systems Project ATHENA creates surrogate human organ systems The development of miniature surrogate human organs, coupled with highly...

  16. Unequal error protection of subband coded bits 

    E-Print Network [OSTI]

    Devalla, Badarinath

    1994-01-01

    Source coded data can be separated into different classes based on their susceptibility to channel errors. Errors in the Important bits cause greater distortion in the reconstructed signal. This thesis presents an Unequal Error Protection scheme...

  17. Communication error detection using facial expressions

    E-Print Network [OSTI]

    Wang, Sy Bor, 1976-

    2008-01-01

    Automatic detection of communication errors in conversational systems typically rely only on acoustic cues. However, perceptual studies have indicated that speakers do exhibit visual communication error cues passively ...

  18. Create an ETD Using Adobe Lesson 1: Create a PDF File

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    Create an ETD Using Adobe® Acrobat® Lesson 1: Create a PDF File 1 Create a PDF File #12;Create an ETD Using Adobe® Acrobat® Lesson 1: Create a PDF File 2 Tip The default settings will create an ETD. Click on the Restore Defaults button to make sure that the defaults are selected or click

  19. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Particles. II. PROTON RANGE-ENERGY DATA Stopping Medium: Be2301 III. PION RANGE-ENERGY DATA Mev. Pion Kinetic Energy2301 IV. DEUTERON RANGE-ENERGY DATA Deuteron Kinetic Energy

  20. Quantum Error Correction with magnetic molecules

    E-Print Network [OSTI]

    José J. Baldoví; Salvador Cardona-Serra; Juan M. Clemente-Juan; Luis Escalera-Moreno; Alejandro Gaita-Ariño; Guillermo Mínguez Espallargas

    2014-08-22

    Quantum algorithms often assume independent spin qubits to produce trivial $|\\uparrow\\rangle=|0\\rangle$, $|\\downarrow\\rangle=|1\\rangle$ mappings. This can be unrealistic in many solid-state implementations with sizeable magnetic interactions. Here we show that the lower part of the spectrum of a molecule containing three exchange-coupled metal ions with $S=1/2$ and $I=1/2$ is equivalent to nine electron-nuclear qubits. We derive the relation between spin states and qubit states in reasonable parameter ranges for the rare earth $^{159}$Tb$^{3+}$ and for the transition metal Cu$^{2+}$, and study the possibility to implement Shor's Quantum Error Correction code on such a molecule. We also discuss recently developed molecular systems that could be adequate from an experimental point of view.

  1. The contour method cutting assumption: error minimization and correction

    SciTech Connect (OSTI)

    Prime, Michael B; Kastengren, Alan L

    2010-01-01

    The recently developed contour method can measure 2-D, cross-sectional residual-stress map. A part is cut in two using a precise and low-stress cutting technique such as electric discharge machining. The contours of the new surfaces created by the cut, which will not be flat if residual stresses are relaxed by the cutting, are then measured and used to calculate the original residual stresses. The precise nature of the assumption about the cut is presented theoretically and is evaluated experimentally. Simply assuming a flat cut is overly restrictive and misleading. The critical assumption is that the width of the cut, when measured in the original, undeformed configuration of the body is constant. Stresses at the cut tip during cutting cause the material to deform, which causes errors. The effect of such cutting errors on the measured stresses is presented. The important parameters are quantified. Experimental procedures for minimizing these errors are presented. An iterative finite element procedure to correct for the errors is also presented. The correction procedure is demonstrated on experimental data from a steel beam that was plastically bent to put in a known profile of residual stresses.

  2. Methods and apparatus using commutative error detection values for fault isolation in multiple node computers

    DOE Patents [OSTI]

    Almasi, Gheorghe (Ardsley, NY) [Ardsley, NY; Blumrich, Matthias Augustin (Ridgefield, CT) [Ridgefield, CT; Chen, Dong (Croton-On-Hudson, NY) [Croton-On-Hudson, NY; Coteus, Paul (Yorktown, NY) [Yorktown, NY; Gara, Alan (Mount Kisco, NY) [Mount Kisco, NY; Giampapa, Mark E. (Irvington, NY) [Irvington, NY; Heidelberger, Philip (Cortlandt Manor, NY) [Cortlandt Manor, NY; Hoenicke, Dirk I. (Ossining, NY) [Ossining, NY; Singh, Sarabjeet (Mississauga, CA) [Mississauga, CA; Steinmacher-Burow, Burkhard D. (Wernau, DE) [Wernau, DE; Takken, Todd (Brewster, NY) [Brewster, NY; Vranas, Pavlos (Bedford Hills, NY) [Bedford Hills, NY

    2008-06-03

    Methods and apparatus perform fault isolation in multiple node computing systems using commutative error detection values for--example, checksums--to identify and to isolate faulty nodes. When information associated with a reproducible portion of a computer program is injected into a network by a node, a commutative error detection value is calculated. At intervals, node fault detection apparatus associated with the multiple node computer system retrieve commutative error detection values associated with the node and stores them in memory. When the computer program is executed again by the multiple node computer system, new commutative error detection values are created and stored in memory. The node fault detection apparatus identifies faulty nodes by comparing commutative error detection values associated with reproducible portions of the application program generated by a particular node from different runs of the application program. Differences in values indicate a possible faulty node.

  3. Potential Hydraulic Modelling Errors Associated with Rheological Data Extrapolation in Laminar Flow

    SciTech Connect (OSTI)

    Shadday, Martin A., Jr.

    1997-03-20

    The potential errors associated with the modelling of flows of non-Newtonian slurries through pipes, due to inadequate rheological models and extrapolation outside of the ranges of data bases, are demonstrated. The behaviors of both dilatant and pseudoplastic fluids with yield stresses, and the errors associated with treating them as Bingham plastics, are investigated.

  4. Kernel Regression in the Presence of Correlated Errors Kernel Regression in the Presence of Correlated Errors

    E-Print Network [OSTI]

    Kernel Regression in the Presence of Correlated Errors Kernel Regression in the Presence in nonparametric regression is difficult in the presence of correlated errors. There exist a wide variety vector machines for regression. Keywords: nonparametric regression, correlated errors, bandwidth choice

  5. Y-12 to help create fuel for NASA's long-range space exploration...

    National Nuclear Security Administration (NNSA)

    with NASA's Glenn Research Center in Cleveland, Ohio, to support the design of a small nuclear-powered reactor with potential to lead to small fission power reactors for future...

  6. Y-12 to help create fuel for NASA's long-range space exploration missions

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largest single| National Nuclear Security

  7. Systematic ranging and late warning asteroid impacts

    E-Print Network [OSTI]

    Farnocchia, D; Micheli, M

    2015-01-01

    We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the observations is generally short, perhaps a few hours or even less, which leads to severe degeneracies in the orbit estimation process. The systematic ranging approach gets around these degeneracies by performing a raster scan in the poorly-constrained space of topocentric range and range rate, while the plane of sky position and motion are directly tied to the recorded observations. This scan allows us to identify regions corresponding to collision solutions, as well as potential impact times and locations. From the probability distribution of the observation errors, we obtain a probability distribution in the orbital space and then estimate the probability of an Earth impact. We show how this technique is effective for a number of examples, including 2008 TC3 and 2014 AA, the only tw...

  8. Approximate error conjugation gradient minimization methods

    DOE Patents [OSTI]

    Kallman, Jeffrey S

    2013-05-21

    In one embodiment, a method includes selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, calculating an approximate error using the subset of rays, and calculating a minimum in a conjugate gradient direction based on the approximate error. In another embodiment, a system includes a processor for executing logic, logic for selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, logic for calculating an approximate error using the subset of rays, and logic for calculating a minimum in a conjugate gradient direction based on the approximate error. In other embodiments, computer program products, methods, and systems are described capable of using approximate error in constrained conjugate gradient minimization problems.

  9. Resnick Fellowship Guidelines The Resnick Institute graduate research fellowships were created to support new research projects

    E-Print Network [OSTI]

    Stoltz, Brian M.

    were created to support new research projects related to sustainable energy students interested in pursuing a new research project related to sustainable energy the wide range of disciplines related to energy research that will be represented

  10. CREATING AND CELEBRATING OUR WATERSHED'S FUTURE

    E-Print Network [OSTI]

    #12;CREATING AND CELEBRATING OUR WATERSHED'S FUTURE SELECTING INDICATORS FOR A SUSTAINABLE WATERSHED FUTURE March 1 - 2,1997 Falkland, B.C. Workshop Report Prepared For: Objectives Section.M. and MacDonald, D.D. 1997. Creating and Celebrating Our Watershed's Future- Selecting Indicators

  11. Group representations, error bases and quantum codes

    SciTech Connect (OSTI)

    Knill, E

    1996-01-01

    This report continues the discussion of unitary error bases and quantum codes. Nice error bases are characterized in terms of the existence of certain characters in a group. A general construction for error bases which are non-abelian over the center is given. The method for obtaining codes due to Calderbank et al. is generalized and expressed purely in representation theoretic terms. The significance of the inertia subgroup both for constructing codes and obtaining the set of transversally implementable operations is demonstrated.

  12. On a fatal error in tachyonic physics

    E-Print Network [OSTI]

    Edward Kapu?cik

    2013-08-10

    A fatal error in the famous paper on tachyons by Gerald Feinberg is pointed out. The correct expressions for energy and momentum of tachyons are derived.

  13. Adjoint Error Estimation for Elastohydrodynamic Lubrication

    E-Print Network [OSTI]

    Jimack, Peter

    Adjoint Error Estimation for Elastohydrodynamic Lubrication by Daniel Edward Hart Submitted elastohydro- dynamic lubrication (EHL) problems. A functional is introduced, namely the friction

  14. Measure of Diffusion Model Error for Thermal Radiation Transport 

    E-Print Network [OSTI]

    Kumar, Akansha

    2013-04-19

    and computational time. However, this approximation often has significant error. Error due to the inherent nature of a physics model is called model error. Information about the model error associated with the diffusion approximation is clearly desirable...

  15. Two computational approaches for creating Chinese painting 

    E-Print Network [OSTI]

    Chan, Ching

    2000-01-01

    In this thesis two computational approaches for creating Chinese painting are developed. The first approach uses an expressive paint tool that enables anyone to paint 2D Chinese paintings in real-time. The realistic rendering of paint strokes...

  16. Ungulate Carcasses Perforate Ecological Filters and Create

    E-Print Network [OSTI]

    2007). Forest biodiversity, energy flow, nutrient cycling, and regeneration are significantly affectedUngulate Carcasses Perforate Ecological Filters and Create Biogeochemical Hotspots in Forest. Vucetich, Rolf O. Peterson, Joshua M. Shields, and Matthew D. Powers School of Forest Resources

  17. Creating an inspiring and sustainable living

    E-Print Network [OSTI]

    Langendoen, Koen

    to shape and plan for more sustainable development. Specialisations: · Urban TransformationsCreating an inspiring and sustainable living environment Diploma Master of Science Architecture, Urbanism and Building Sciences Credits 120 ECTS, 24 months Start BSc Bouwkunde graduates can enrol monthly

  18. Creating a False Memory in the Hippocampus

    E-Print Network [OSTI]

    Ramirez Moreno, Steve

    Memories can be unreliable. We created a false memory in mice by optogenetically manipulating memory engram–bearing cells in the hippocampus. Dentate gyrus (DG) or CA1 neurons activated by exposure to a particular context ...

  19. NASA Creates Space Technology Mission Directorate

    E-Print Network [OSTI]

    drew media attention and articles on 3D printing, including coverage by Popular Mechanics and website on 3D printing and prototyping technology to create parts for the Space Launch System at Marshall Space

  20. WIPP Weatherization: Common Errors and Innovative Solutions Presentati...

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

    WIPP Weatherization: Common Errors and Innovative Solutions Presentation WIPP Weatherization: Common Errors and Innovative Solutions Presentation This presentation contains...

  1. SU-E-J-235: Varian Portal Dosimetry Accuracy at Detecting Simulated Delivery Errors

    SciTech Connect (OSTI)

    Gordon, J; Bellon, M; Barton, K; Gulam, M; Chetty, I

    2014-06-01

    Purpose: To use receiver operating characteristic (ROC) analysis to quantify the Varian Portal Dosimetry (VPD) application's ability to detect delivery errors in IMRT fields. Methods: EPID and VPD were calibrated/commissioned using vendor-recommended procedures. Five clinical plans comprising 56 modulated fields were analyzed using VPD. Treatment sites were: pelvis, prostate, brain, orbit, and base of tongue. Delivery was on a Varian Trilogy linear accelerator at 6MV using a Millenium120 multi-leaf collimator. Image pairs (VPD-predicted and measured) were exported in dicom format. Each detection test imported an image pair into Matlab, optionally inserted a simulated error (rectangular region with intensity raised or lowered) into the measured image, performed 3%/3mm gamma analysis, and saved the gamma distribution. For a given error, 56 negative tests (without error) were performed, one per 56 image pairs. Also, 560 positive tests (with error) with randomly selected image pairs and randomly selected in-field error location. Images were classified as errored (or error-free) if percent pixels with ?range of ? and ?, true/false positive/negative rates were calculated. This procedure was repeated for inserted errors of different sizes. VPD was considered to reliably detect an error if images were correctly classified as errored or error-free at least 95% of the time, for some ?+? combination. Results: 20mm{sup 2} errors with intensity altered by ?20% could be reliably detected, as could 10mm{sup 2} errors with intensity was altered by ?50%. Errors with smaller size or intensity change could not be reliably detected. Conclusion: Varian Portal Dosimetry using 3%/3mm gamma analysis is capable of reliably detecting only those fluence errors that exceed the stated sizes. Images containing smaller errors can pass mathematical analysis, though may be detected by visual inspection. This work was not funded by Varian Oncology Systems. Some authors have other work partly funded by Varian Oncology Systems.

  2. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Mev gm/ era Mev gm/crn" Mev-cnf/gm 5. 817 x 10" 1. 685 x 10"2301 RANGE OF DEUTERONS IN CARBON J T Mev R gm/cm - dT "dTi T Mev R gm/cm - dT dF Mev- Mev-cn^gm cm/gm 5. 517 x lu" 3.

  3. Inference for Model Error Allan Seheult

    E-Print Network [OSTI]

    Oakley, Jeremy

    Reservoirs, Model Error, Reification, Thermohaline Circulation. 1 Introduction Mathematical models of complex that the uncertainties associated with both calibrating a mathematical model to observations on a physical system specification exercise of model error with the cosmologists, linked to an extensive analysis of model

  4. Remarks on statistical errors in equivalent widths

    E-Print Network [OSTI]

    Klaus Vollmann; Thomas Eversberg

    2006-07-03

    Equivalent width measurements for rapid line variability in atomic spectral lines are degraded by increasing error bars with shorter exposure times. We derive an expression for the error of the line equivalent width $\\sigma(W_\\lambda)$ with respect to pure photon noise statistics and provide a correction value for previous calculations.

  5. Characterizing Application Memory Error Vulnerability to

    E-Print Network [OSTI]

    Mutlu, Onur

    -reliability memory (HRM) Store error-tolerant data in less-reliable lower-cost memory Store error-vulnerable data an application Observation 2: Data can be recovered by software ·Heterogeneous-Reliability Memory (HRM: Data can be recovered by software ·Heterogeneous-Reliability Memory (HRM) ·Evaluation 4 #12;Server

  6. MPI Runtime Error Detection with MUST: Advances in Deadlock Detection

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

    Hilbrich, Tobias; Protze, Joachim; Schulz, Martin; de Supinski, Bronis R.; Müller, Matthias S.

    2013-01-01

    The widely used Message Passing Interface (MPI) is complex and rich. As a result, application developers require automated tools to avoid and to detect MPI programming errors. We present the Marmot Umpire Scalable Tool (MUST) that detects such errors with significantly increased scalability. We present improvements to our graph-based deadlock detection approach for MPI, which cover future MPI extensions. Our enhancements also check complex MPI constructs that no previous graph-based detection approach handled correctly. Finally, we present optimizations for the processing of MPI operations that reduce runtime deadlock detection overheads. Existing approaches often require (p) analysis time per MPI operation,more »forpprocesses. We empirically observe that our improvements lead to sub-linear or better analysis time per operation for a wide range of real world applications.« less

  7. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The 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 reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  8. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The 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 reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  9. Wide range radioactive gas concentration detector

    DOE Patents [OSTI]

    Anderson, David F. (Los Alamos, NM)

    1984-01-01

    A wide range radioactive gas concentration detector and monitor which is capable of measuring radioactive gas concentrations over a range of eight orders of magnitude. The device of the present invention is designed to have an ionization chamber which is sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  10. EGU General Assembly 2014, Vienna, Austria Relative importance of coloured noise vs. model errors in reduced scale gravity field

    E-Print Network [OSTI]

    Stuttgart, Universität

    EGU General Assembly 2014, Vienna, Austria Relative importance of coloured noise vs. model errors produced by time-variable background model errors. In particular, the effects of measurement noise models for every time epoch which provides the observables in the dimension of range acceleration

  11. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, S.H.

    1988-03-10

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are colliminated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. 1 fig.

  12. Long Range Development Plan

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

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

  13. Testing Documentation Create-A-Page

    E-Print Network [OSTI]

    Wolfgang, Paul

    /1/2009 This document defines the methods for testing Create-A-Page, as well as the results of those tests that other end users need to be aware of before release. The order of the acceptance tests is important as an admin. For reference later in the document, each test will be listed separately, and all the acceptance

  14. Creating and Visualizing Fuzzy Document Classification

    E-Print Network [OSTI]

    Fink, Eugene

    Creating and Visualizing Fuzzy Document Classification Judith Gelernter Dong Cao Raymond Lu Eugene@cs.cmu.edu Abstract--Fuzzy classification ranks items by degree rather than assigning them either within or without of a category. The novelty of our work is in integrating fuzzy classification algorithms with an interface

  15. Creating Artificial Radiation Belts in the Lab

    E-Print Network [OSTI]

    Mauel, Michael E.

    Creating Artificial Radiation Belts in the Lab or "Some Observations of Hot Plasma Trapped Jeff #12;Outline · The Earth's radiation belts and ring current · Fast-electron interchange instability) fusion. #12;#12;"Artificial Radiation Belts" Van Allen kissing Explorer 4 "good bye" before it's launch

  16. Creating and Sustaining a PK-16 Partnership

    E-Print Network [OSTI]

    Deng, Bo

    ) masters program that educates and supports teams of outstanding middle level math teachers who will become, Lincoln Public Schools Jim Harrington, Omaha Public Schools Julie Thomas, University of Nebrska Partnership proposal to the National Science Foundation to create the Math in the Middle Institute Partnership

  17. Creating the Internet of Your Things

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Creating the Internet of Your Things Barb Edson General Manager Microsoft Corp. Executive Summary. The Internet of Things, also known as IoT, is one such trend. The Internet of Things provides vast opportunities, but it can also pose a challenge to enterprises. The Internet of Things has kept plenty

  18. Agility metric sensitivity using linear error theory 

    E-Print Network [OSTI]

    Smith, David Matthew

    2000-01-01

    Aircraft agility metrics have been proposed for use to measure the performance and capability of aircraft onboard while in-flight. The sensitivity of these metrics to various types of errors and uncertainties is not ...

  19. Quantum Error Correction for Quantum Memories

    E-Print Network [OSTI]

    Barbara M. Terhal

    2015-04-10

    Active quantum error correction using qubit stabilizer codes has emerged as a promising, but experimentally challenging, engineering program for building a universal quantum computer. In this review we consider the formalism of qubit stabilizer and subsystem stabilizer codes and their possible use in protecting quantum information in a quantum memory. We review the theory of fault-tolerance and quantum error-correction, discuss examples of various codes and code constructions, the general quantum error correction conditions, the noise threshold, the special role played by Clifford gates and the route towards fault-tolerant universal quantum computation. The second part of the review is focused on providing an overview of quantum error correction using two-dimensional (topological) codes, in particular the surface code architecture. We discuss the complexity of decoding and the notion of passive or self-correcting quantum memories. The review does not focus on a particular technology but discusses topics that will be relevant for various quantum technologies.

  20. Simulating Bosonic Baths with Error Bars

    E-Print Network [OSTI]

    Mischa P. Woods; M. Cramer; M. B. Plenio

    2015-04-07

    We derive rigorous truncation-error bounds for the spin-boson model and its generalizations to arbitrary quantum systems interacting with bosonic baths. For the numerical simulation of such baths the truncation of both, the number of modes and the local Hilbert-space dimensions is necessary. We derive super-exponential Lieb--Robinson-type bounds on the error when restricting the bath to finitely-many modes and show how the error introduced by truncating the local Hilbert spaces may be efficiently monitored numerically. In this way we give error bounds for approximating the infinite system by a finite-dimensional one. As a consequence, numerical simulations such as the time-evolving density with orthogonal polynomials algorithm (TEDOPA) now allow for the fully certified treatment of the system-environment interaction.

  1. Errors and paradoxes in quantum mechanics

    E-Print Network [OSTI]

    D. Rohrlich

    2007-08-28

    Errors and paradoxes in quantum mechanics, entry in the Compendium of Quantum Physics: Concepts, Experiments, History and Philosophy, ed. F. Weinert, K. Hentschel, D. Greenberger and B. Falkenburg (Springer), to appear

  2. Quantum error-correcting codes and devices

    DOE Patents [OSTI]

    Gottesman, Daniel (Los Alamos, NM)

    2000-10-03

    A method of forming quantum error-correcting codes by first forming a stabilizer for a Hilbert space. A quantum information processing device can be formed to implement such quantum codes.

  3. Organizational Errors: Directions for Future Research

    E-Print Network [OSTI]

    Carroll, John Stephen

    The goal of this chapter is to promote research about organizational errors—i.e., the actions of multiple organizational participants that deviate from organizationally specified rules and can potentially result in adverse ...

  4. Quantifying truncation errors in effective field theory

    E-Print Network [OSTI]

    R. J. Furnstahl; N. Klco; D. R. Phillips; S. Wesolowski

    2015-06-03

    Bayesian procedures designed to quantify truncation errors in perturbative calculations of quantum chromodynamics observables are adapted to expansions in effective field theory (EFT). In the Bayesian approach, such truncation errors are derived from degree-of-belief (DOB) intervals for EFT predictions. Computation of these intervals requires specification of prior probability distributions ("priors") for the expansion coefficients. By encoding expectations about the naturalness of these coefficients, this framework provides a statistical interpretation of the standard EFT procedure where truncation errors are estimated using the order-by-order convergence of the expansion. It also permits exploration of the ways in which such error bars are, and are not, sensitive to assumptions about EFT-coefficient naturalness. We first demonstrate the calculation of Bayesian probability distributions for the EFT truncation error in some representative examples, and then focus on the application of chiral EFT to neutron-proton scattering. Epelbaum, Krebs, and Mei{\\ss}ner recently articulated explicit rules for estimating truncation errors in such EFT calculations of few-nucleon-system properties. We find that their basic procedure emerges generically from one class of naturalness priors considered, and that all such priors result in consistent quantitative predictions for 68% DOB intervals. We then explore several methods by which the convergence properties of the EFT for a set of observables may be used to check the statistical consistency of the EFT expansion parameter.

  5. Evaluating operating system vulnerability to memory errors.

    SciTech Connect (OSTI)

    Ferreira, Kurt Brian; Bridges, Patrick G.; Pedretti, Kevin Thomas Tauke; Mueller, Frank; Fiala, David; Brightwell, Ronald Brian

    2012-05-01

    Reliability is of great concern to the scalability of extreme-scale systems. Of particular concern are soft errors in main memory, which are a leading cause of failures on current systems and are predicted to be the leading cause on future systems. While great effort has gone into designing algorithms and applications that can continue to make progress in the presence of these errors without restarting, the most critical software running on a node, the operating system (OS), is currently left relatively unprotected. OS resiliency is of particular importance because, though this software typically represents a small footprint of a compute node's physical memory, recent studies show more memory errors in this region of memory than the remainder of the system. In this paper, we investigate the soft error vulnerability of two operating systems used in current and future high-performance computing systems: Kitten, the lightweight kernel developed at Sandia National Laboratories, and CLE, a high-performance Linux-based operating system developed by Cray. For each of these platforms, we outline major structures and subsystems that are vulnerable to soft errors and describe methods that could be used to reconstruct damaged state. Our results show the Kitten lightweight operating system may be an easier target to harden against memory errors due to its smaller memory footprint, largely deterministic state, and simpler system structure.

  6. Multichannel long-range Rydberg molecules

    E-Print Network [OSTI]

    Eiles, Matthew T

    2015-01-01

    A generalized class of ultra-long-range Rydberg molecules is proposed which consist of a multichannel Rydberg atom whose outermost electron creates a chemical bond with a distant ground state atom. Such multichannel Rydberg molecules exhibit favorable properties for laser excitation, because states exist where the quantum defect varies strongly with the principal quantum number. The resulting occurrence of near degeneracies with states of high orbital angular momentum promotes the admixture of low $l$ into the high $l$ deeply bound `trilobite' molecule states, thereby circumventing the usual difficulty posed by electric dipole selection rules. Such states also can exhibit multi-scale binding possibilities that could present novel options for quantum manipulation.

  7. Fan-less long range alpha detector

    DOE Patents [OSTI]

    MacArthur, D.W.; Bounds, J.A.

    1994-05-10

    A fan-less long range alpha detector is disclosed which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces. 2 figures.

  8. Short-Term Load Forecasting Error Distributions and Implications for Renewable Integration Studies: Preprint

    SciTech Connect (OSTI)

    Hodge, B. M.; Lew, D.; Milligan, M.

    2013-01-01

    Load forecasting in the day-ahead timescale is a critical aspect of power system operations that is used in the unit commitment process. It is also an important factor in renewable energy integration studies, where the combination of load and wind or solar forecasting techniques create the net load uncertainty that must be managed by the economic dispatch process or with suitable reserves. An understanding of that load forecasting errors that may be expected in this process can lead to better decisions about the amount of reserves necessary to compensate errors. In this work, we performed a statistical analysis of the day-ahead (and two-day-ahead) load forecasting errors observed in two independent system operators for a one-year period. Comparisons were made with the normal distribution commonly assumed in power system operation simulations used for renewable power integration studies. Further analysis identified time periods when the load is more likely to be under- or overforecast.

  9. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, Stephen H. (East Syracuse, NY)

    1989-06-06

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are collimnated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. The computer solves the following equation in the analysis: ##EQU1## where: N(x).DELTA.x=the number of neutron interactions measured between a position x and x+.DELTA.x, A.sub.i (E.sub.i).DELTA.E.sub.i =the number of incident neutrons with energy between E.sub.i and E.sub.i +.DELTA.E.sub.i, and C=C(E.sub.i)=N .sigma.(E.sub.i) where N=the number density of absorbing atoms in the position sensitive counter means and .sigma. (E.sub.i)=the average cross section of the absorbing interaction between E.sub.i and E.sub.i +.DELTA.E.sub.i.

  10. California: Microturbine Protects Environment, Creates Jobs ...

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

    wide range of fuels using existing infrastructure including natural gas, landfill gas, biogas generated from anaerobic digesters, and syngas. While many commercial, industrial, and...

  11. Investigating SANS/CWE Top 25 Programming Errors. 1 Investigating the SANS/CWE Top 25 Programming Errors List

    E-Print Network [OSTI]

    Hamlen, Kevin W.

    Investigating SANS/CWE Top 25 Programming Errors. 1 Investigating the SANS/CWE Top 25 Programming Errors List Running Title: Investigating SANS/CWE Top 25 Programming Errors. Investigating the SANS;Investigating SANS/CWE Top 25 Programming Errors. 2 Investigating the SANS/CWE Top 25 Programming Errors List

  12. T-609: Adobe Acrobat/Reader Memory Corruption Error in CoolType Library Lets Remote Users Execute Arbitrary Code

    Broader source: Energy.gov [DOE]

    A remote user can create a specially crafted PDF file that, when loaded by the target user, will trigger a memory corruption error in the CoolType library and execute arbitrary code on the target system. The code will run with the privileges of the target user.

  13. Laser damage creates backdoors in quantum communications

    E-Print Network [OSTI]

    Vadim Makarov; Jean-Philippe Bourgoin; Poompong Chaiwongkhot; Mathieu Gagne; Thomas Jennewein; Sarah Kaiser; Raman Kashyap; Matthieu Legre; Carter Minshull; Shihan Sajeed

    2015-10-12

    Quantum communication protocols such as quantum cloud computing, digital signatures, coin-tossing, secret-sharing, and key distribution, using similar optical technologies, claim to provide unconditional security guaranteed by quantum mechanics. Among these protocols, the security of quantum key distribution (QKD) is most scrutinized and believed to be guaranteed as long as implemented devices are properly characterized and existing implementation loopholes are identified and patched. Here we show that this assumption is not true. We experimentally demonstrate a class of attacks based on laser damage, capable of creating new security loopholes on-demand. We perform it on two different implementations of QKD and coin-tossing protocols, and create new information leakage side-channels. Our results show that quantum communication protocols cannot guarantee security alone, but will always have to be supported by additional technical countermeasures against laser damage.

  14. CREATING THE NORTHEAST GASOLINE SUPPLY RESERVE

    Broader source: Energy.gov [DOE]

    In 2012, Superstorm Sandy made landfall in the northeastern United States and caused heavy damage to two refineries and left more than 40 terminals in New York Harbor closed due to water damage and loss of power. This left some New York gas stations without fuel for as long as 30 days. As part of the Obama Administration’s ongoing response to the storm, the Department of Energy created the first federal regional refined product reserve, the Northeast Gasoline Supply Reserve.

  15. Bioindustry Creates Green Jobs | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy|Make FuelsBioindustry Creates Green Jobs

  16. Haverford Researchers Create Carbon Dioxide-Separating Polymer

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

    Haverford College Researchers Create Carbon Dioxide-Separating Polymer Haverford College Researchers Create Carbon Dioxide-Separating Polymer August 1, 2012 | Tags: Basic Energy...

  17. A National Offshore Wind Strategy: Creating an Offshore Wind...

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

    A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in the United States A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in...

  18. Creating a Culture of Risk Assessment | Department of Energy

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

    Creating a Culture of Risk Assessment Creating a Culture of Risk Assessment Decisions regarding how to secure and invest in the Nation's energy infrastructure are often complex....

  19. Creating Mobile Emission Reduction Credits | Department of Energy

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

    Creating Mobile Emission Reduction Credits Creating Mobile Emission Reduction Credits 2002 DEER Conference Presentation: Emission Credit Brokers 2002deersloan.pdf More Documents...

  20. Creating an Energy Awareness Campaign - A Handbook for Federal...

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

    Creating an Energy Awareness Campaign - A Handbook for Federal Energy Managers Creating an Energy Awareness Campaign - A Handbook for Federal Energy Managers Handbook describes the...

  1. New Energy Department Partnership Creates Solar Bridges to Energy...

    Energy Savers [EERE]

    New Energy Department Partnership Creates Solar Bridges to Energy Security New Energy Department Partnership Creates Solar Bridges to Energy Security July 7, 2015 - 3:21pm Addthis...

  2. Improving Energy Efficiency and Creating Jobs Through Weatherization...

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

    Improving Energy Efficiency and Creating Jobs Through Weatherization Improving Energy Efficiency and Creating Jobs Through Weatherization December 9, 2013 - 12:00am Addthis Since...

  3. Creating LTS&M Efficiencies While Protecting Human Health and...

    Office of Environmental Management (EM)

    Creating LTS&M Efficiencies While Protecting Human Health and the Environment Creating LTS&M Efficiencies While Protecting Human Health and the Environment October 13, 2015 -...

  4. Neutron multiplication error in TRU waste measurements

    SciTech Connect (OSTI)

    Veilleux, John [Los Alamos National Laboratory; Stanfield, Sean B [CCP; Wachter, Joe [CCP; Ceo, Bob [CCP

    2009-01-01

    Total Measurement Uncertainty (TMU) in neutron assays of transuranic waste (TRU) are comprised of several components including counting statistics, matrix and source distribution, calibration inaccuracy, background effects, and neutron multiplication error. While a minor component for low plutonium masses, neutron multiplication error is often the major contributor to the TMU for items containing more than 140 g of weapons grade plutonium. Neutron multiplication arises when neutrons from spontaneous fission and other nuclear events induce fissions in other fissile isotopes in the waste, thereby multiplying the overall coincidence neutron response in passive neutron measurements. Since passive neutron counters cannot differentiate between spontaneous and induced fission neutrons, multiplication can lead to positive bias in the measurements. Although neutron multiplication can only result in a positive bias, it has, for the purpose of mathematical simplicity, generally been treated as an error that can lead to either a positive or negative result in the TMU. While the factors that contribute to neutron multiplication include the total mass of fissile nuclides, the presence of moderating material in the matrix, the concentration and geometry of the fissile sources, and other factors; measurement uncertainty is generally determined as a function of the fissile mass in most TMU software calculations because this is the only quantity determined by the passive neutron measurement. Neutron multiplication error has a particularly pernicious consequence for TRU waste analysis because the measured Fissile Gram Equivalent (FGE) plus twice the TMU error must be less than 200 for TRU waste packaged in 55-gal drums and less than 325 for boxed waste. For this reason, large errors due to neutron multiplication can lead to increased rejections of TRU waste containers. This report will attempt to better define the error term due to neutron multiplication and arrive at values that are more realistic and accurate. To do so, measurements of standards and waste drums were performed with High Efficiency Neutron Counters (HENC) located at Los Alamos National Laboratory (LANL). The data were analyzed for multiplication effects and new estimates of the multiplication error were computed. A concluding section will present alternatives for reducing the number of rejections of TRU waste containers due to neutron multiplication error.

  5. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Solar Radiation.211:614 Retrieval Terms: insolation; reproduction; snow management; environ mental planning. Solar radiation environmental factor. Incident solar radia tion creates a secondary form of radiation which af fects the forest

  6. Error Analysis in Nuclear Density Functional Theory (Journal...

    Office of Scientific and Technical Information (OSTI)

    Error Analysis in Nuclear Density Functional Theory Citation Details In-Document Search Title: Error Analysis in Nuclear Density Functional Theory Authors: Schunck, N ; McDonnell,...

  7. Error Analysis in Nuclear Density Functional Theory (Journal...

    Office of Scientific and Technical Information (OSTI)

    Error Analysis in Nuclear Density Functional Theory Citation Details In-Document Search Title: Error Analysis in Nuclear Density Functional Theory You are accessing a document...

  8. Optimal error estimates for corrected trapezoidal rules

    E-Print Network [OSTI]

    Talvila, Erik

    2012-01-01

    Corrected trapezoidal rules are proved for $\\int_a^b f(x)\\,dx$ under the assumption that $f"\\in L^p([a,b])$ for some $1\\leq p\\leq\\infty$. Such quadrature rules involve the trapezoidal rule modified by the addition of a term $k[f'(a)-f'(b)]$. The coefficient $k$ in the quadrature formula is found that minimizes the error estimates. It is shown that when $f'$ is merely assumed to be continuous then the optimal rule is the trapezoidal rule itself. In this case error estimates are in terms of the Alexiewicz norm. This includes the case when $f"$ is integrable in the Henstock--Kurzweil sense or as a distribution. All error estimates are shown to be sharp for the given assumptions on $f"$. It is shown how to make these formulas exact for all cubic polynomials $f$. Composite formulas are computed for uniform partitions.

  9. Range corrections in Proton Halo Nuclei

    E-Print Network [OSTI]

    Ryberg, Emil; Hammer, H -W; Platter, Lucas

    2015-01-01

    We analyze the effects of finite-range corrections in halo effective field theory for S-wave proton halo nuclei. We calculate the charge radius to next-to-leading order and the astrophysical S-factor for low-energy proton capture to fifth order in the low-energy expansion. As an application, we confront our results with experimental data for the S-factor for proton capture on Oxygen-16 into the excited $1/2^+$ state of Fluorine-17. Our low-energy theory is characterized by a systematic low-energy expansion, which can be used to quantify an energy-dependent model error to be utilized in data fitting. Finally, we show that the existence of proton halos is suppressed by the need for two fine tunings in the underlying theory.

  10. Strategic Plan 2015 -2020 Creating a

    E-Print Network [OSTI]

    Strategic Plan 2015 - 2020 #12;Creating a Better Future A StrAtegic PlAn for the oregon StAte UniverSity college of engineering 2 engineerS for 2020 And beyond 4 the StrAtegic PlAnning ProceSS 4 ProJect leAderShiP 6 SUMMAry of the five-PhASe PlAnning ProJect 8 the StrAtegic PlAn 10 goAlS And ob

  11. Creating fluid injectivity in tar sands formations

    DOE Patents [OSTI]

    Stegemeier, George Leo; Beer, Gary Lee; Zhang, Etuan

    2010-06-08

    Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons are produced from the portion.

  12. Creating fluid injectivity in tar sands formations

    DOE Patents [OSTI]

    Stegemeier, George Leo; Beer, Gary Lee; Zhang, Etuan

    2012-06-05

    Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons including mobilized hydrocarbons are produced from the portion.

  13. Project ATHENA creates surrogate human organ systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions |(Conference) | SciTech ConnectProject ATHENA creates

  14. Lateral boundary errors in regional numerical weather

    E-Print Network [OSTI]

    ?umer, Slobodan

    Lateral boundary errors in regional numerical weather prediction models Author: Ana Car Advisor, they describe evolution of atmospher - weather forecast. Every NWP model solves the same system of equations (1: assoc. prof. dr. Nedjeljka Zagar January 5, 2015 Abstract Regional models are used in many national

  15. MEASUREMENT AND CORRECTION OF ULTRASONIC ANEMOMETER ERRORS

    E-Print Network [OSTI]

    Heinemann, Detlev

    commonly show systematic errors depending on wind speed due to inaccurate ultrasonic transducer mounting three- dimensional wind speed time series. Results for the variance and power spectra are shown. 1 wind speeds with ultrasonic anemometers: The measu- red flow is distorted by the probe head

  16. Chinese Remaindering with Errors Oded Goldreich

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Chinese Remaindering with Errors Oded Goldreich Department of Computer Science Weizmann Institute 02139, USA madhu@mit.edu. z Abstract The Chinese Remainder Theorem states that a positive integer m The Chinese Remainder Theorem states that a positive integer m is uniquely specified by its remainder modulo k

  17. Distribution of Wind Power Forecasting Errors from Operational Systems (Presentation)

    SciTech Connect (OSTI)

    Hodge, B. M.; Ela, E.; Milligan, M.

    2011-10-01

    This presentation offers new data and statistical analysis of wind power forecasting errors in operational systems.

  18. Analysis of Solar Two Heliostat Tracking Error Sources

    SciTech Connect (OSTI)

    Jones, S.A.; Stone, K.W.

    1999-01-28

    This paper explores the geometrical errors that reduce heliostat tracking accuracy at Solar Two. The basic heliostat control architecture is described. Then, the three dominant error sources are described and their effect on heliostat tracking is visually illustrated. The strategy currently used to minimize, but not truly correct, these error sources is also shown. Finally, a novel approach to minimizing error is presented.

  19. Creating Adaptive Web-Based Applications Paul De Bra, Natalia Stash, David Smits1

    E-Print Network [OSTI]

    De Bra, Paul

    ap- plications AHA! also offers a module to create multiple-choice tests. AHA! is an open source Java global types of services down to controlling your heating, lighting and other types of devices in the home, and using interface devices ranging from mobile phones to huge computer monitors and wall

  20. Shared dosimetry error in epidemiological dose-response analyses

    SciTech Connect (OSTI)

    Stram, Daniel O.; Preston, Dale L.; Sokolnikov, Mikhail; Napier, Bruce; Kopecky, Kenneth J.; Boice, John; Beck, Harold; Till, John; Bouville, Andre; Zeeb, Hajo

    2015-03-23

    Radiation dose reconstruction systems for large-scale epidemiological studies are sophisticated both in providing estimates of dose and in representing dosimetry uncertainty. For example, a computer program was used by the Hanford Thyroid Disease Study to provide 100 realizations of possible dose to study participants. The variation in realizations reflected the range of possible dose for each cohort member consistent with the data on dose determinates in the cohort. Another example is the Mayak Worker Dosimetry System 2013 which estimates both external and internal exposures and provides multiple realizations of "possible" dose history to workers given dose determinants. This paper takes up the problem of dealing with complex dosimetry systems that provide multiple realizations of dose in an epidemiologic analysis. In this paper we derive expected scores and the information matrix for a model used widely in radiation epidemiology, namely the linear excess relative risk (ERR) model that allows for a linear dose response (risk in relation to radiation) and distinguishes between modifiers of background rates and of the excess risk due to exposure. We show that treating the mean dose for each individual (calculated by averaging over the realizations) as if it was true dose (ignoring both shared and unshared dosimetry errors) gives asymptotically unbiased estimates (i.e. the score has expectation zero) and valid tests of the null hypothesis that the ERR slope ? is zero. Although the score is unbiased the information matrix (and hence the standard errors of the estimate of ?) is biased for ??0 when ignoring errors in dose estimates, and we show how to adjust the information matrix to remove this bias, using the multiple realizations of dose. The use of these methods in the context of several studies including, the Mayak Worker Cohort, and the U.S. Atomic Veterans Study, is discussed.

  1. Shared dosimetry error in epidemiological dose-response analyses

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

    Stram, Daniel O.; Preston, Dale L.; Sokolnikov, Mikhail; Napier, Bruce; Kopecky, Kenneth J.; Boice, John; Beck, Harold; Till, John; Bouville, Andre; Zeeb, Hajo

    2015-03-23

    Radiation dose reconstruction systems for large-scale epidemiological studies are sophisticated both in providing estimates of dose and in representing dosimetry uncertainty. For example, a computer program was used by the Hanford Thyroid Disease Study to provide 100 realizations of possible dose to study participants. The variation in realizations reflected the range of possible dose for each cohort member consistent with the data on dose determinates in the cohort. Another example is the Mayak Worker Dosimetry System 2013 which estimates both external and internal exposures and provides multiple realizations of "possible" dose history to workers given dose determinants. This paper takesmore »up the problem of dealing with complex dosimetry systems that provide multiple realizations of dose in an epidemiologic analysis. In this paper we derive expected scores and the information matrix for a model used widely in radiation epidemiology, namely the linear excess relative risk (ERR) model that allows for a linear dose response (risk in relation to radiation) and distinguishes between modifiers of background rates and of the excess risk due to exposure. We show that treating the mean dose for each individual (calculated by averaging over the realizations) as if it was true dose (ignoring both shared and unshared dosimetry errors) gives asymptotically unbiased estimates (i.e. the score has expectation zero) and valid tests of the null hypothesis that the ERR slope ? is zero. Although the score is unbiased the information matrix (and hence the standard errors of the estimate of ?) is biased for ??0 when ignoring errors in dose estimates, and we show how to adjust the information matrix to remove this bias, using the multiple realizations of dose. The use of these methods in the context of several studies including, the Mayak Worker Cohort, and the U.S. Atomic Veterans Study, is discussed.« less

  2. Effective range function below threshold

    E-Print Network [OSTI]

    A. Deloff

    2000-06-26

    We demonstrate that the kernel of the Lippmann-Schwinger equation, associated with interactions consisting of a sum of the Coulomb plus a short range nuclear potential, below threshold becomes degenerate. Taking advantage of this fact, we present a simple method of calculating the effective range function for negative energies. This may be useful in practice since the effective range expansion extrapolated to threshold allows to extract low-energy scattering parameters: the Coulomb-modified scattering length and the effective range.

  3. Creating materials with a desired refraction coefficient

    E-Print Network [OSTI]

    A. G. Ramm

    2009-09-02

    A method is given for creating material with a desired refraction coefficient. The method consists of embedding into a material with known refraction coefficient many small particles of size $a$. The number of particles per unit volume around any point is prescribed, the distance between neighboring particles is $O(a^{\\frac{2-\\kappa}{3}})$ as $a\\to 0$, $0<\\kappa<1$ is a fixed parameter. The total number of the embedded particle is $O(a^{\\kappa-2})$. The physical properties of the particles are described by the boundary impedance $\\zeta_m$ of the $m-th$ particle, $\\zeta_m=O(a^{-\\kappa})$ as $a\\to 0$. The refraction coefficient is the coefficient $n^2(x)$ in the wave equation $[\

  4. 10.1177/1087057105276989Kevorkov and MakarenkovSystematic Errors in High-Throughput Screening Statistical Analysis of Systematic Errors

    E-Print Network [OSTI]

    Makarenkov, Vladimir

    - mentaldatarequiresan efficientautomaticroutinefor theselection of hits. Unfortunately, random and systematic errors can

  5. Precise method of compensating radiation-induced errors in a hot-cathode-ionization gauge with correcting electrode

    SciTech Connect (OSTI)

    Saeki, Hiroshi Magome, Tamotsu

    2014-10-06

    To compensate pressure-measurement errors caused by a synchrotron radiation environment, a precise method using a hot-cathode-ionization-gauge head with correcting electrode, was developed and tested in a simulation experiment with excess electrons in the SPring-8 storage ring. This precise method to improve the measurement accuracy, can correctly reduce the pressure-measurement errors caused by electrons originating from the external environment, and originating from the primary gauge filament influenced by spatial conditions of the installed vacuum-gauge head. As the result of the simulation experiment to confirm the performance reducing the errors caused by the external environment, the pressure-measurement error using this method was approximately less than several percent in the pressure range from 10{sup ?5} Pa to 10{sup ?8} Pa. After the experiment, to confirm the performance reducing the error caused by spatial conditions, an additional experiment was carried out using a sleeve and showed that the improved function was available.

  6. Progress in Understanding Error-field Physics in NSTX Spherical Torus Plasmas

    SciTech Connect (OSTI)

    E. Menard, R.E. Bell, D.A. Gates, S.P. Gerhardt, J.-K. Park, S.A. Sabbagh, J.W. Berkery, A. Egan, J. Kallman, S.M. Kaye, B. LeBlanc, Y.Q. Liu, A. Sontag, D. Swanson, H. Yuh, W. Zhu and the NSTX Research Team

    2010-05-19

    The low aspect ratio, low magnetic field, and wide range of plasma beta of NSTX plasmas provide new insight into the origins and effects of magnetic field errors. An extensive array of magnetic sensors has been used to analyze error fields, to measure error field amplification, and to detect resistive wall modes in real time. The measured normalized error-field threshold for the onset of locked modes shows a linear scaling with plasma density, a weak to inverse dependence on toroidal field, and a positive scaling with magnetic shear. These results extrapolate to a favorable error field threshold for ITER. For these low-beta locked-mode plasmas, perturbed equilibrium calculations find that the plasma response must be included to explain the empirically determined optimal correction of NSTX error fields. In high-beta NSTX plasmas exceeding the n=1 no-wall stability limit where the RWM is stabilized by plasma rotation, active suppression of n=1 amplified error fields and the correction of recently discovered intrinsic n=3 error fields have led to sustained high rotation and record durations free of low-frequency core MHD activity. For sustained rotational stabilization of the n=1 RWM, both the rotation threshold and magnitude of the amplification are important. At fixed normalized dissipation, kinetic damping models predict rotation thresholds for RWM stabilization to scale nearly linearly with particle orbit frequency. Studies for NSTX find that orbit frequencies computed in general geometry can deviate significantly from those computed in the high aspect ratio and circular plasma cross-section limit, and these differences can strongly influence the predicted RWM stability. The measured and predicted RWM stability is found to be very sensitive to the E × B rotation profile near the plasma edge, and the measured critical rotation for the RWM is approximately a factor of two higher than predicted by the MARS-F code using the semi-kinetic damping model.

  7. Range descriptions for the spherical mean Radon transform

    E-Print Network [OSTI]

    M. Agranovsky; P. Kuchment; E. T. Quinto

    2006-09-02

    The transform considered in the paper averages a function supported in a ball in $\\RR^n$ over all spheres centered at the boundary of the ball. This Radon type transform arises in several contemporary applications, e.g. in thermoacoustic tomography and sonar and radar imaging. Range descriptions for such transforms are important in all these areas, for instance when dealing with incomplete data, error correction, and other issues. Four different types of complete range descriptions are provided, some of which also suggest inversion procedures. Necessity of three of these (appropriately formulated) conditions holds also in general domains, while the complete discussion of the case of general domains would require another publication.

  8. Chapter 10 Creating and Maintaining Geographic Databases 131 Creating and Maintaining

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    (DBMS), a specialist piece of software designed to handle multi-user access to an integrated set of data and versioning. 10 #12;Chapter 10 Creating and Maintaining Geographic Databases 132 KEY WORDS AND CONCEPTS DBMS.2 Database management systems 10.3 Storing data in DBMS tables 10.4 SQL 10.5 Geographic database types

  9. Detecting Soft Errors in Stencil based Computations

    SciTech Connect (OSTI)

    Sharma, V.; Gopalkrishnan, G.; Bronevetsky, G.

    2015-05-06

    Given the growing emphasis on system resilience, it is important to develop software-level error detectors that help trap hardware-level faults with reasonable accuracy while minimizing false alarms as well as the performance overhead introduced. We present a technique that approaches this idea by taking stencil computations as our target, and synthesizing detectors based on machine learning. In particular, we employ linear regression to generate computationally inexpensive models which form the basis for error detection. Our technique has been incorporated into a new open-source library called SORREL. In addition to reporting encouraging experimental results, we demonstrate techniques that help reduce the size of training data. We also discuss the efficacy of various detectors synthesized, as well as our future plans.

  10. Error field penetration and locking to the backward propagating wave

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

    Finn, John M.; Cole, Andrew J.; Brennan, Dylan P.

    2015-12-30

    In this letter we investigate error field penetration, or locking, behavior in plasmas having stable tearing modes with finite real frequencies wr in the plasma frame. In particular, we address the fact that locking can drive a significant equilibrium flow. We show that this occurs at a velocity slightly above v = wr/k, corresponding to the interaction with a backward propagating tearing mode in the plasma frame. Results are discussed for a few typical tearing mode regimes, including a new derivation showing that the existence of real frequencies occurs for viscoresistive tearing modes, in an analysis including the effects ofmore »pressure gradient, curvature and parallel dynamics. The general result of locking to a finite velocity flow is applicable to a wide range of tearing mode regimes, indeed any regime where real frequencies occur.« less

  11. Gross error detection in process data 

    E-Print Network [OSTI]

    Singh, Gurmeet

    1992-01-01

    , 1991), with many optimum properties, seems to have been untapped by chemical engineers. We first review the background of the Tr test, and present relevant properties of the test. IV. A Hotelling's Generalization of Students t Test One of the most...: Chemical Engineering GROSS ERROR DETECTION IN PROCESS DATA A Thesis by GURMEET SINGH Approved as to style and content by: Ralph E. White (Chair of Committee) Michael Nikoloau (Member Richard B. Gri n (Member) R. W. Flummerfelt (Head...

  12. Improving Memory Error Handling Using Linux

    SciTech Connect (OSTI)

    Carlton, Michael Andrew [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Blanchard, Sean P. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Debardeleben, Nathan A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-25

    As supercomputers continue to get faster and more powerful in the future, they will also have more nodes. If nothing is done, then the amount of memory in supercomputer clusters will soon grow large enough that memory failures will be unmanageable to deal with by manually replacing memory DIMMs. "Improving Memory Error Handling Using Linux" is a process oriented method to solve this problem by using the Linux kernel to disable (offline) faulty memory pages containing bad addresses, preventing them from being used again by a process. The process of offlining memory pages simplifies error handling and results in reducing both hardware and manpower costs required to run Los Alamos National Laboratory (LANL) clusters. This process will be necessary for the future of supercomputing to allow the development of exascale computers. It will not be feasible without memory error handling to manually replace the number of DIMMs that will fail daily on a machine consisting of 32-128 petabytes of memory. Testing reveals the process of offlining memory pages works and is relatively simple to use. As more and more testing is conducted, the entire process will be automated within the high-performance computing (HPC) monitoring software, Zenoss, at LANL.

  13. L.A. Rebellion: Creating a New Black Cinema

    E-Print Network [OSTI]

    Sheppard, Samantha Noelle

    2011-01-01

    Creating a New Black Cinema Symposium Review by SamanthaCreating a New Black Cinema By the turn of the next century,in the development of Black cinema took place at UCLA in the

  14. do you know your RANGE

    E-Print Network [OSTI]

    Hoffman, Garlyn O.

    1957-01-01

    need a good knowledge of range man- asemen2 b~f~re m~kjng CID?E CD~~B~~DDS DY range plots as is required in Part 111. An ex- ample of Part I11 is on page 12. The four range plots are placed just exactly like placing a class of livestock at a stock... good cover of native grass. Grass is a product which is harvested and marketed as meat, ~uool, mohair and wildlife. When you market animals you are paid for the number of poz~nds rather than the number of head you sell. By practicing good range m...

  15. Creating Thunder: The Western Rain-Making Process

    E-Print Network [OSTI]

    Parkman, E. Breck

    1993-01-01

    stone balls were used to send thunder and lightning againstballs were rolled about in order to create thunder and lightning (

  16. CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    i CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS Jan M. Allbeck A DISSERTATION in Computer, and a scholar. #12;iv ABSTRACT CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS Jan M. Allbeck Norman I. Badler Creating virtual scenarios that simulate a substantial human population with typical and varied

  17. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, R.C.; Schubert, W.K.

    1994-01-18

    An apparatus is described for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy. 6 figures.

  18. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    PACIFIC SOUTHWEST Forest and Range Experiment Station Ash Leachate Can Reduce Surface Erosion leachate can reduce surface erosion. Res. Note PSW-342, 4 p., illus. Pacific Southwest Forest and Range Exp from north- western California, ash leachate flocculated the clay frac- tions. As a result, the soil

  19. Decoherence and dephasing errors caused by the dc Stark effect...

    Office of Scientific and Technical Information (OSTI)

    Decoherence and dephasing errors caused by the dc Stark effect in rapid ion transport Citation Details In-Document Search Title: Decoherence and dephasing errors caused by the dc...

  20. Human error contribution to nuclear materials-handling events

    E-Print Network [OSTI]

    Sutton, Bradley (Bradley Jordan)

    2007-01-01

    This thesis analyzes a sample of 15 fuel-handling events from the past ten years at commercial nuclear reactors with significant human error contributions in order to detail the contribution of human error to fuel-handling ...

  1. Range Searching in Categorical Data: Colored Range Searching on Grid

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    , gsat @cs.duke.edu ¾ AT&T Labs, Shannon Laboratory, 180 Park Ave., Florham Park, NJ 07932. muthu each stock has a category that is the industry sector it belongs to, and we consider a range

  2. Error Reduction for Weigh-In-Motion

    SciTech Connect (OSTI)

    Hively, Lee M; Abercrombie, Robert K; Scudiere, Matthew B; Sheldon, Frederick T

    2009-01-01

    Federal and State agencies need certifiable vehicle weights for various applications, such as highway inspections, border security, check points, and port entries. ORNL weigh-in-motion (WIM) technology was previously unable to provide certifiable weights, due to natural oscillations, such as vehicle bouncing and rocking. Recent ORNL work demonstrated a novel filter to remove these oscillations. This work shows further filtering improvements to enable certifiable weight measurements (error < 0.1%) for a higher traffic volume with less effort (elimination of redundant weighing).

  3. Forward Error Correction and Functional Programming

    E-Print Network [OSTI]

    Bull, Tristan Michael

    2011-04-25

    .1 Annapolis Micro Wildstar 5 DDR2 DRAM Interface . . . . . . . . 50 6.2 Dual-Port DRAM Wrapper . . . . . . . . . . . . . . . . . . . . . 52 6.3 Kansas Lava DRAM Interface . . . . . . . . . . . . . . . . . . . . 55 7 Conclusion 58 7.1 Future Work... codewords. We ran the simulation using input data with energy per bit to noise power spectral density ratios (Eb=N0) of 3dB to 6dB in 0.5dB increments. For each Eb=N0 value, we ran the simulation until at least 25,000 bit errors were recorded. Results...

  4. Unitary-process discrimination with error margin

    E-Print Network [OSTI]

    T. Hashimoto; A. Hayashi; M. Hayashi; M. Horibe

    2010-06-10

    We investigate a discrimination scheme between unitary processes. By introducing a margin for the probability of erroneous guess, this scheme interpolates the two standard discrimination schemes: minimum-error and unambiguous discrimination. We present solutions for two cases. One is the case of two unitary processes with general prior probabilities. The other is the case with a group symmetry: the processes comprise a projective representation of a finite group. In the latter case, we found that unambiguous discrimination is a kind of "all or nothing": the maximum success probability is either 0 or 1. We also closely analyze how entanglement with an auxiliary system improves discrimination performance.

  5. On the Error in QR Integration

    E-Print Network [OSTI]

    Dieci, Luca; Van Vleck, Erik

    2008-03-07

    Society for Industrial and Applied Mathematics Vol. 46, No. 3, pp. 1166–1189 ON THE ERROR IN QR INTEGRATION? LUCA DIECI† AND ERIK S. VAN VLECK‡ Abstract. An important change of variables for a linear time varying system x? = A(t)x, t ? 0, is that induced...(X) is the matrix comprising the diagonal part of X, the rest being all 0’s; upp(X) is the matrix comprising the upper triangular part of X, the rest being all 0’s; and low(X) is the matrix comprising the strictly lower triangular part of X, the rest being all 0’s...

  6. Bolstered Error Estimation Ulisses Braga-Neto a,c

    E-Print Network [OSTI]

    Braga-Neto, Ulisses

    the bolstered error estimators proposed in this paper, as part of a larger library for classification and error of the data. It has a direct geometric interpretation and can be easily applied to any classification rule as smoothed error estimation. In some important cases, such as a linear classification rule with a Gaussian

  7. Bit Error Rate, Power and Area Analysis of Multiple FPGA Implementations of Underwater FSK

    E-Print Network [OSTI]

    Kastner, Ryan

    Beijing 100871, P.R.China country code: 086 liying~, zhangx~@ime.pku.edu.cn + University of California, San Diego La Jolla, CA USA country code: 001 b1benson~ ,kastner~@cs.ucsd.edu ABSTRACT There has been an increasing interest in creating short-range, low data-rate underwater wireless sensor networks for scientific

  8. SU-E-T-318: The Effect of Patient Positioning Errors On Target Coverage and Cochlear Dose in Stereotactic Radiosurgery Treatment of Acoustic Neuromas

    SciTech Connect (OSTI)

    Dellamonica, D.; Luo, G.; Ding, G.

    2014-06-01

    Purpose: Setup errors on the order of millimeters may cause under-dosing of targets and significant changes in dose to critical structures especially when planning with tight margins in stereotactic radiosurgery. This study evaluates the effects of these types of patient positioning uncertainties on planning target volume (PTV) coverage and cochlear dose for stereotactic treatments of acoustic neuromas. Methods: Twelve acoustic neuroma patient treatment plans were retrospectively evaluated in Brainlab iPlan RT Dose 4.1.3. All treatment beams were shaped by HDMLC from a Varian TX machine. Seven patients had planning margins of 2mm, five had 1–1.5mm. Six treatment plans were created for each patient simulating a 1mm setup error in six possible directions: anterior-posterior, lateral, and superiorinferior. The arcs and HDMLC shapes were kept the same for each plan. Change in PTV coverage and mean dose to the cochlea was evaluated for each plan. Results: The average change in PTV coverage for the 72 simulated plans was ?1.7% (range: ?5 to +1.1%). The largest average change in coverage was observed for shifts in the patient's superior direction (?2.9%). The change in mean cochlear dose was highly dependent upon the direction of the shift. Shifts in the anterior and superior direction resulted in an average increase in dose of 13.5 and 3.8%, respectively, while shifts in the posterior and inferior direction resulted in an average decrease in dose of 17.9 and 10.2%. The average change in dose to the cochlea was 13.9% (range: 1.4 to 48.6%). No difference was observed based on the size of the planning margin. Conclusion: This study indicates that if the positioning uncertainty is kept within 1mm the setup errors may not result in significant under-dosing of the acoustic neuroma target volumes. However, the change in mean cochlear dose is highly dependent upon the direction of the shift.

  9. Integrating human related errors with technical errors to determine causes behind offshore accidents

    E-Print Network [OSTI]

    Aamodt, Agnar

    errors were embedded as an integral part of the oil well drilling opera- tion. To reduce the number assessment of the failure. The method is based on a knowledge model of the oil-well drilling process. All of non-productive time (NPT) during oil-well drilling. NPT exhibits a much lower declining trend than

  10. Analysis of Errors in a Special Perturbations Satellite Orbit Propagator

    SciTech Connect (OSTI)

    Beckerman, M.; Jones, J.P.

    1999-02-01

    We performed an analysis of error densities for the Special Perturbations orbit propagator using data for 29 satellites in orbits of interest to Space Shuttle and International Space Station collision avoidance. We find that the along-track errors predominate. These errors increase monotonically over each 36-hour prediction interval. The predicted positions in the along-track direction progressively either leap ahead of or lag behind the actual positions. Unlike the along-track errors the radial and cross-track errors oscillate about their nearly zero mean values. As the number of observations per fit interval decline the along-track prediction errors, and amplitudes of the radial and cross-track errors, increase.

  11. Pressure Change Measurement Leak Testing Errors

    SciTech Connect (OSTI)

    Pryor, Jeff M; Walker, William C

    2014-01-01

    A pressure change test is a common leak testing method used in construction and Non-Destructive Examination (NDE). The test is known as being a fast, simple, and easy to apply evaluation method. While this method may be fairly quick to conduct and require simple instrumentation, the engineering behind this type of test is more complex than is apparent on the surface. This paper intends to discuss some of the more common errors made during the application of a pressure change test and give the test engineer insight into how to correctly compensate for these factors. The principals discussed here apply to ideal gases such as air or other monoatomic or diatomic gasses; however these same principals can be applied to polyatomic gasses or liquid flow rate with altered formula specific to those types of tests using the same methodology.

  12. Accurate description of torsion potentials in conjugated polymers using density functionals with reduced self-interaction error

    SciTech Connect (OSTI)

    Sutton, Christopher; Gray, Matthew T.; Brunsfeld, Max; Parrish, Robert M.; Sherrill, C. David; Sears, John S.; Brédas, Jean-Luc, E-mail: jean-luc.bredas@chemistry.gatech.edu, E-mail: thomas.koerzdoerfer@uni-potsdam.de [School of Chemistry and Biochemistry and Center for Computational Molecular Science and Technology, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)] [School of Chemistry and Biochemistry and Center for Computational Molecular Science and Technology, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Körzdörfer, Thomas, E-mail: jean-luc.bredas@chemistry.gatech.edu, E-mail: thomas.koerzdoerfer@uni-potsdam.de [School of Chemistry and Biochemistry and Center for Computational Molecular Science and Technology, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States) [School of Chemistry and Biochemistry and Center for Computational Molecular Science and Technology, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Computational Chemistry, Institute of Chemistry, University of Potsdam, D-14476 Potsdam (Germany)

    2014-02-07

    We investigate the torsion potentials in two prototypical ?-conjugated polymers, polyacetylene and polydiacetylene, as a function of chain length using different flavors of density functional theory. Our study provides a quantitative analysis of the delocalization error in standard semilocal and hybrid density functionals and demonstrates how it can influence structural and thermodynamic properties. The delocalization error is quantified by evaluating the many-electron self-interaction error (MESIE) for fractional electron numbers, which allows us to establish a direct connection between the MESIE and the error in the torsion barriers. The use of non-empirically tuned long-range corrected hybrid functionals results in a very significant reduction of the MESIE and leads to an improved description of torsion barrier heights. In addition, we demonstrate how our analysis allows the determination of the effective conjugation length in polyacetylene and polydiacetylene chains.

  13. Molecule Nanoweaver Creates High-Tech Medical Patches and Multilayered...

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

    Molecule Nanoweaver Creates High-Tech Medical Patches and Multilayered Capsules Technology available for licensing: Molecule Nanoweaver, a unique tool that can be used as both a...

  14. Creating CZTS Thin Films Via Stacked Metallic CVD and Sulfurization

    E-Print Network [OSTI]

    Bielecki, Anthony

    2013-01-01

    Research, Thin-Film Photovoltaic (PV) Cells Market Analysiscost of photovoltaic systems (such as solar cells) due tosolar cells are created by depositing layers of photovoltaic

  15. Smart Grid: Creating Jobs while Delivering Reliable,Environmentally...

    Open Energy Info (EERE)

    Smart Grid: Creating Jobs while Delivering Reliable, Environmentally-friendly Energy Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(2017)...

  16. Microsoft PowerPoint - Create Business Case for SG Implement...

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

    Creating a Business Case for Smart Grid Implementation Smart Grid Initiatives for Utilities Presented by Steve Pullins, Modern Grid Team September 2009 Funded by the U.S....

  17. Argonne scientists pioneer strategy for creating new materials...

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

    Argonne scientists pioneer strategy for creating new materials By Else Tennessen * August 14, 2014 Tweet EmailPrint ARGONNE, Ill. - Making something new is never easy. Scientists...

  18. Not All Nanodisk Magnetic Vortices Are Created Equally

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

    Are Created Equally Print Wednesday, 29 August 2012 00:00 Magnetic vortices - hurricanes of magnetism only a few atoms across - have generated intense interest in the...

  19. Not All Nanodisk Magnetic Vortices Are Created Equally

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

    Not All Nanodisk Magnetic Vortices Are Created Equally Print Magnetic vortices - hurricanes of magnetism only a few atoms across - have generated intense interest in the high-tech...

  20. Fleming gift creates graduate fellowships in biomolecular engineering...

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

    Fleming gift creates graduate fellowships in biomolecular engineering August 1st, 2015 Summer 2015 by Emily Sanders Hopkins Trustee Emeritus Sam Fleming '62 and his wife, Nancy...

  1. Ames Laboratory scientists create cheaper magnetic material for...

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

    Laboratory scientists create cheaper magnetic material for cars, wind turbines Contacts: For release: April 23, 2015 Karl A. Gschneidner, Division of Materials Sciences and...

  2. Creating Markets for Green Biofuels: Measuring and improving environmental performance

    E-Print Network [OSTI]

    Turner, Brian T.; Plevin, Richard J.; O'Hare, Michael; Farrell, Alexander E.

    2007-01-01

    2004). Growing Energy: How Biofuels Can Help End America'sCreating Markets For Green Biofuels Kalaitzandonakes, N. ,166. Lancaster, C. (2006). Biofuels assurance schemes and

  3. Secretary Chu: President's Energy Budget Creates Jobs, Restores...

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

    nation's effort to secure reliable, clean, safe and secure energy, create new jobs and fight climate change. While the budget makes important investments in energy independence...

  4. Obama Administration Officials to Announce Job-Creating Grid...

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

    "Transmission Call." The passcode is TRANSMISSION. Addthis Related Articles Obama Administration Announces Job-Creating Grid Modernization Pilot Projects Obama Officials Announce...

  5. Theoretical analysis of reflected ray error from surface slope error and their application to the solar concentrated collector

    E-Print Network [OSTI]

    Huang, Weidong

    2011-01-01

    Surface slope error of concentrator is one of the main factors to influence the performance of the solar concentrated collectors which cause deviation of reflected ray and reduce the intercepted radiation. This paper presents the general equation to calculate the standard deviation of reflected ray error from slope error through geometry optics, applying the equation to calculate the standard deviation of reflected ray error for 5 kinds of solar concentrated reflector, provide typical results. The results indicate that the slope error is transferred to the reflected ray in more than 2 folds when the incidence angle is more than 0. The equation for reflected ray error is generally fit for all reflection surfaces, and can also be applied to control the error in designing an abaxial optical system.

  6. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    of forest stands is valuable for studies of the physical environment. Energy balance research centers on howPACIFIC SOUTHWEST Forest and Range Experiment Station FOREST SERVICE U.S. DEPARTMENT in relation to climatic and stand variables USDA FOREST SERVICE RESEARCH PAPER PSW- 71 /1971 #12;CONTENTS

  7. Forest and Range Experiment Station

    E-Print Network [OSTI]

    wider range of suppliers. As working circles beyond the size of a single National Forest have recently. Alternatives for expansion of working circles must be assessed in light of present Forest Service timber management policy and the impacts of timber supply. These alternates include (a) combination of National

  8. ISI Web of KnowledgeSM : Creating Alerts

    E-Print Network [OSTI]

    California at Berkeley, University of

    remain in your search history until you delete it. Creating Citation Alerts Create a citation alert "subscribed" sites are updated. · Feed-reading capabilities are built in with some newer Web browsers. · To find out if a site offers RSS capabilities, look for icons like these: These icons are feed links

  9. Creating Works-Like Prototypes of Mechanical Objects Bongjin Koo

    E-Print Network [OSTI]

    O'Brien, James F.

    of creating works-like prototypes. Designers are increasingly turning to 3D printing as a tool for fab Graphics]: Computational Ge- ometry and Object Modeling--Geometric algorithms. Keywords: fabrication, 3D printing, sketch-based modeling Links: DL PDF WEB VIDEO 1 Introduction Creating physical prototypes

  10. Scientists create `micro-windmills' that could power your cellphone

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    create `micro-windmills' that could power your cellphone Posted on January 12, 2014 by kontim in HARDWARE. The 1.8mm-wide windmills look pretty fragile, but UTA says that their flexible nickel alloy components can stand up to strong winds without fracturing. Page 1 of 3Scientists create 'micro-windmills

  11. NewsTrack -Science New semiconductor technology created

    E-Print Network [OSTI]

    Rogers, John A.

    NewsTrack - Science New semiconductor technology created CHAMPAIGN, Ill., Dec. 14 (UPI) -- U of Illinois-Champaign say the new technology permits either a one- or three-dimensional layout. The approach Rogers Page 1 of 1United Press International - NewsTrack - New semiconductor technology created 12

  12. Creating Highquality Roadmaps for Motion Planning in Virtual Environments

    E-Print Network [OSTI]

    Geraerts, R.J.

    Creating High­quality Roadmaps for Motion Planning in Virtual Environments Roland Geraerts and Mark, the Netherlands Email: {roland,markov}@cs.uu.nl Abstract--- Our goal is to create roadmaps that are particularly suited for motion planning in virtual environments. We use our Reachability Roadmap Method to compute

  13. State discrimination with error margin and its locality

    E-Print Network [OSTI]

    A. Hayashi; T. Hashimoto; M. Horibe

    2008-07-10

    There are two common settings in a quantum-state discrimination problem. One is minimum-error discrimination where a wrong guess (error) is allowed and the discrimination success probability is maximized. The other is unambiguous discrimination where errors are not allowed but the inconclusive result "I don't know" is possible. We investigate discrimination problem with a finite margin imposed on the error probability. The two common settings correspond to the error margins 1 and 0. For arbitrary error margin, we determine the optimal discrimination probability for two pure states with equal occurrence probabilities. We also consider the case where the states to be discriminated are multipartite, and show that the optimal discrimination probability can be achieved by local operations and classical communication.

  14. Error models in quantum computation: an application of model selection

    E-Print Network [OSTI]

    Lucia Schwarz; Steven van Enk

    2013-09-04

    Threshold theorems for fault-tolerant quantum computing assume that errors are of certain types. But how would one detect whether errors of the "wrong" type occur in one's experiment, especially if one does not even know what type of error to look for? The problem is that for many qubits a full state description is impossible to analyze, and a full process description is even more impossible to analyze. As a result, one simply cannot detect all types of errors. Here we show through a quantum state estimation example (on up to 25 qubits) how to attack this problem using model selection. We use, in particular, the Akaike Information Criterion. The example indicates that the number of measurements that one has to perform before noticing errors of the wrong type scales polynomially both with the number of qubits and with the error size.

  15. Adjoint Error Correction for Integral Outputs

    E-Print Network [OSTI]

    Pierce, Niles A.

    University Computing Laboratory, Oxford OX1 3QD, United Kingdom 2 Applied & Computational Mathematics problem gives the e#11;ect of numerical approximations on the output func- tional of interest and nonlinear di#11;erential equations, incor- porating a range of numerical examples illustrating the ability

  16. Range determination for scannerless imaging

    DOE Patents [OSTI]

    Muguira, Maritza Rosa (Albuquerque, NM); Sackos, John Theodore (Albuquerque, NM); Bradley, Bart Davis (Albuquerque, NM); Nellums, Robert (Albuquerque, NM)

    2000-01-01

    A new method of operating a scannerless range imaging system (e.g., a scannerless laser radar) has been developed. This method is designed to compensate for nonlinear effects which appear in many real-world components. The system operates by determining the phase shift of the laser modulation, which is a physical quantity related physically to the path length between the laser source and the detector, for each pixel of an image.

  17. A technique for human error analysis (ATHEANA)

    SciTech Connect (OSTI)

    Cooper, S.E.; Ramey-Smith, A.M.; Wreathall, J.; Parry, G.W. [and others

    1996-05-01

    Probabilistic risk assessment (PRA) has become an important tool in the nuclear power industry, both for the Nuclear Regulatory Commission (NRC) and the operating utilities. Human reliability analysis (HRA) is a critical element of PRA; however, limitations in the analysis of human actions in PRAs have long been recognized as a constraint when using PRA. A multidisciplinary HRA framework has been developed with the objective of providing a structured approach for analyzing operating experience and understanding nuclear plant safety, human error, and the underlying factors that affect them. The concepts of the framework have matured into a rudimentary working HRA method. A trial application of the method has demonstrated that it is possible to identify potentially significant human failure events from actual operating experience which are not generally included in current PRAs, as well as to identify associated performance shaping factors and plant conditions that have an observable impact on the frequency of core damage. A general process was developed, albeit in preliminary form, that addresses the iterative steps of defining human failure events and estimating their probabilities using search schemes. Additionally, a knowledge- base was developed which describes the links between performance shaping factors and resulting unsafe actions.

  18. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

  19. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-03

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

  20. Innovative static spectropolarimeter concept for wide spectral ranges: tolerancing study

    E-Print Network [OSTI]

    Pertenais, Martin; Parès, Laurent; Petit, Pascal

    2015-01-01

    Developing an efficient and robust polarimeter for wide spectral ranges and space applications is a main issue in many projects. As part of the UVMag consortium created to develop UV facilities in space (e.g. the Arago mission proposed to ESA), we are studying an innovative concept of polarimeter that is robust, simple, and efficient on a wide spectral range. The idea, based on the article by Sparks et al. (2012), is to use polarization scramblers to create a spatial modulation of the polarization. Along the height of the wedges of the scramblers, the thickness of the birefringent material crossed by the light, and thus the retardance, vary continuously. This variation creates an intensity modulation of the light related to the entrance polarization state. Analyzing this modulation with a linear polarizer, and dispersing the light spectrally in the orthogonal spatial direction, enables the measurement of the full Stokes vector over the entire spectrum. This determination is performed with a single-shot measur...

  1. RESEARCH ARTICLE Minimization of divergence error in volumetric velocity

    E-Print Network [OSTI]

    Marusic, Ivan

    RESEARCH ARTICLE Minimization of divergence error in volumetric velocity measurements Volumetric velocity measurements taken in incompressible fluids are typically hindered by a nonzero

  2. Wide-range radioactive-gas-concentration detector

    DOE Patents [OSTI]

    Anderson, D.F.

    1981-11-16

    A wide-range radioactive-gas-concentration detector and monitor capable of measuring radioactive-gas concentrations over a range of eight orders of magnitude is described. The device is designed to have an ionization chamber sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel-plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel-plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization-chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  3. Extended-range tiltable micromirror

    DOE Patents [OSTI]

    Allen, James J. (Albuquerque, NM); Wiens, Gloria J. (Newberry, FL); Bronson, Jessica R. (Gainesville, FL)

    2009-05-05

    A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive linkage includes a pair of torsion springs which are connected together to operate similar to a four-bar linkage with spring joints. The progressive linkage provides a non-linear spring constant which can allow the micromirror to be tilted at any angle within its range substantially free from any electrostatic instability or hysteretic behavior.

  4. Range Fuels | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels Jump

  5. Range Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎Wind Farm Jump to:Randsburg,Range

  6. A numerical study of geometry dependent errors in velocity, temperature, and density measurements from single grid planar retarding potential analyzers

    SciTech Connect (OSTI)

    Davidson, R. L.; Earle, G. D.; Heelis, R. A.; Klenzing, J. H.

    2010-08-15

    Planar retarding potential analyzers (RPAs) have been utilized numerous times on high profile missions such as the Communications/Navigation Outage Forecast System and the Defense Meteorological Satellite Program to measure plasma composition, temperature, density, and the velocity component perpendicular to the plane of the instrument aperture. These instruments use biased grids to approximate ideal biased planes. These grids introduce perturbations in the electric potential distribution inside the instrument and when unaccounted for cause errors in the measured plasma parameters. Traditionally, the grids utilized in RPAs have been made of fine wires woven into a mesh. Previous studies on the errors caused by grids in RPAs have approximated woven grids with a truly flat grid. Using a commercial ion optics software package, errors in inferred parameters caused by both woven and flat grids are examined. A flat grid geometry shows the smallest temperature and density errors, while the double thick flat grid displays minimal errors for velocities over the temperature and velocity range used. Wire thickness along the dominant flow direction is found to be a critical design parameter in regard to errors in all three inferred plasma parameters. The results shown for each case provide valuable design guidelines for future RPA development.

  7. Live Fire Range Environmental Assessment

    SciTech Connect (OSTI)

    1993-08-01

    The Central Training Academy (CTA) is a DOE Headquarters Organization located in Albuquerque, New Mexico, with the mission to effectively and efficiently educate and train personnel involved in the protection of vital national security interests of DOE. The CTA Live Fire Range (LFR), where most of the firearms and tactical training occurs, is a complex separate from the main campus. The purpose of the proposed action is to expand the LFR to allow more options of implementing required training. The Department of Energy has prepared this Environmental Assessment (EA) for the proposed construction and operation of an expanded Live Fire Range Facility at the Central Training Academy in Albuquerque, New Mexico. Based on the analysis in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required and DOE is issuing this Finding of No Significant Impact (FONSI).

  8. Mutual information, bit error rate and security in Wójcik's scheme

    E-Print Network [OSTI]

    Zhanjun Zhang

    2004-02-21

    In this paper the correct calculations of the mutual information of the whole transmission, the quantum bit error rate (QBER) are presented. Mistakes of the general conclusions relative to the mutual information, the quantum bit error rate (QBER) and the security in W\\'{o}jcik's paper [Phys. Rev. Lett. {\\bf 90}, 157901(2003)] have been pointed out.

  9. Kernel Regression with Correlated Errors K. De Brabanter

    E-Print Network [OSTI]

    Kernel Regression with Correlated Errors K. De Brabanter , J. De Brabanter , , J.A.K. Suykens B: It is a well-known problem that obtaining a correct bandwidth in nonparametric regression is difficult support vector machines for regression. Keywords: nonparametric regression, correlated errors, short

  10. Ridge Regression Estimation Approach to Measurement Error Model

    E-Print Network [OSTI]

    Shalabh

    Ridge Regression Estimation Approach to Measurement Error Model A.K.Md. Ehsanes Saleh Carleton of the regression parameters is ill conditioned. We consider the Hoerl and Kennard type (1970) ridge regression (RR) modifications of the five quasi- empirical Bayes estimators of the regression parameters of a measurement error

  11. Solving LWE problem with bounded errors in polynomial time

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Solving LWE problem with bounded errors in polynomial time Jintai Ding1,2 Southern Chinese call the learning with bounded errors (LWBE) problems, we can solve it with complexity O(nD ). Keywords, this problem corresponds to the learning parity with noise (LPN) problem. There are several ways to solve

  12. ERROR-TOLERANT MULTI-MODAL SENSOR FUSION Farinaz Koushanfar*

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    ERROR-TOLERANT MULTI-MODAL SENSOR FUSION Farinaz Koushanfar* , Sasha Slijepcevic , Miodrag is multi-modal sensor fusion, where data from sensors of dif- ferent modalities are combined in order applications, including multi- modal sensor fusion, is to ensure that all of the techniques and tools are error

  13. Fault-Tolerant Error Correction with the Gauge Color Code

    E-Print Network [OSTI]

    Benjamin J. Brown; Naomi H. Nickerson; Dan E. Browne

    2015-08-03

    The gauge color code is a quantum error-correcting code with local syndrome measurements that, remarkably, admits a universal transversal gate set without the need for resource-intensive magic state distillation. A result of recent interest, proposed by Bomb\\'{i}n, shows that the subsystem structure of the gauge color code admits an error-correction protocol that achieves tolerance to noisy measurements without the need for repeated measurements, so called single-shot error correction. Here, we demonstrate the promise of single-shot error correction by designing a two-part decoder and investigate its performance. We simulate fault-tolerant error correction with the gauge color code by repeatedly applying our proposed error-correction protocol to deal with errors that occur continuously to the underlying physical qubits of the code over the duration that quantum information is stored. We estimate a sustainable error rate, i.e. the threshold for the long time limit, of $ \\sim 0.31\\%$ for a phenomenological noise model using a simple decoding algorithm.

  14. Error detection through consistency checking Peng Gong* Lan Mu#

    E-Print Network [OSTI]

    Silver, Whendee

    Error detection through consistency checking Peng Gong* Lan Mu# *Center for Assessment & Monitoring Hall, University of California, Berkeley, Berkeley, CA 94720-3110 gong@nature.berkeley.edu mulan, accessibility, and timeliness as recorded in the lineage data (Chen and Gong, 1998). Spatial error refers

  15. Analysis of Probabilistic Error Checking Procedures on Storage Systems

    E-Print Network [OSTI]

    Chen, Ing-Ray

    Analysis of Probabilistic Error Checking Procedures on Storage Systems ING-RAY CHEN AND I.-LING YEN Email: irchen@iie.ncku.edu.tw Conventionally, error checking on storage systems is performed on-the-fly (with probability 1) as the storage system is being accessed in order to improve the reliability

  16. ADJOINT AND DEFECT ERROR BOUNDING AND CORRECTION FOR FUNCTIONAL ESTIMATES

    E-Print Network [OSTI]

    Pierce, Niles A.

    decades. Integral functionals also arise in other aerospace areas such as the calculation of radar cross functional that results from residual errors in approximating the solution to the partial differential to handle flows with shocks; numerical experiments confirm 4th order error estimates for a pressure integral

  17. Kinematic Error Correction for Minimally Invasive Surgical Robots

    E-Print Network [OSTI]

    in two likely sources of kinematic error: port displacement and instrument shaft flexion. For a quasi. To reach the surgical site near the chest wall, the instrument shaft applies significant torque to the port, and the instrument shaft to bend. These kinematic errors impair positioning of the robot and cause deviations from

  18. Update from the Dean Exceptional Progress in Creating

    E-Print Network [OSTI]

    illnesses · Building a cell phone interface with medical equipment to create cheaper, faster and more rugged material to build a sensor for finding oil Did you know? BU's increase in academic quality and visibility

  19. Structural Rearrangement in Ebola Virus Protein VP40 Creates...

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

    Virus Protein VP40 Creates Multiple Functions Monday, March 31, 2014 Figure 1. Three structures of VP40. Top, a butterfly-shaped dimer structure critical for membrane trafficking....

  20. Creating Automated Interactive Video Playback for Studies of Animal Communications 

    E-Print Network [OSTI]

    Butkowski, Trisha

    2010-01-16

    -time animations with video tracking software. This method may be used to conduct interactive playback experiments. To demonstrate this method, a prototype was created and used to conduct automated mating choice trials on female swordtail fish. The results...

  1. Inquiry-based learning templates for creating online educational paths 

    E-Print Network [OSTI]

    Davis, Sarah Alice

    2006-10-30

    Walden's Paths, created by the Center for the Study of Digital Libraries, provides a mechanism for leveraging student learning with the incredible amount of educational material on the web by organizing selected web pages ...

  2. Creating A More Inclusive Campus Rev. Dr. Jamie Washington

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    Creating A More Inclusive Campus Community Rev. Dr. Jamie Washington President, The Washington Washington, M.Div., Ph.D. President, Washington Consulting Group Founder, Social Justice Training Institute

  3. Knowledge Capture and Transfer Program (KCTP) “Newly Created” Powerpedia Page

    Broader source: Energy.gov [DOE]

    The Knowledge Capture and Transfer Program (KCTP) has a new logo and a newly created Powerpedia page.  The page layout and program descriptions allow for quicker searches and easier access to...

  4. Investigation of Created Fracture Geometry through Hydraulic Fracture Treatment Analysis 

    E-Print Network [OSTI]

    Ahmed, Ibraheem 1987-

    2012-11-30

    Successful development of shale gas reservoirs is highly dependent on hydraulic fracture treatments. Many questions remain in regards to the geometry of the created fractures. Production data analysis from some shale gas wells quantifies a much...

  5. DOE's "Creating a Star on Earth" video highlights PPPL's magnetic...

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

    DOE's "Creating a Star on Earth" video highlights PPPL's magnetic fusion research March 5, 2014 Tweet Widget Google Plus One Share on Facebook A screenshot from the U.S. Department...

  6. words, sound We mixed all mediums and created

    E-Print Network [OSTI]

    Glasser, Adrian

    in the nation. UH Arts creates a solid artistic hub to nurture our students' visions. The result? An infusion of inspiration for the City of Houston and beyond. An infusion of inspiration for the City of Houston and beyond

  7. Creating value from uncertainty : a study of ocean transportation contracting

    E-Print Network [OSTI]

    Pálsson, Sigurjón

    2005-01-01

    How can financial tools like real options and hedging mitigate and create value from uncertainty in transportation? This paper describes these concepts and identifies research on them that has relevance to transportation. ...

  8. BIOENERGIZEME INFOGRAPHIC CHALLENGE: Bioenergy: Creating Biofuels from Biomass

    Office of Energy Efficiency and Renewable Energy (EERE)

    This infographic was created by students from North Caddo Magnet High School in Vivian, LA, as part of the U.S. Department of Energy-BioenergizeME Infographic Challenge. The BioenergizeME...

  9. Modeling subdivision control meshes for creating cartoon faces 

    E-Print Network [OSTI]

    Skaria, Sajan

    2000-01-01

    Modeling three-dimensional faces on the computer has been an interesting yet challenging problem. This thesis presents a method for creating cartoon faces by using a subdivision scheme. We use set-operations for conceptual ...

  10. Creating CZTS Thin Films Via Stacked Metallic CVD and Sulfurization

    E-Print Network [OSTI]

    Bielecki, Anthony

    2013-01-01

    Katagiri, Cu2ZnSnS4 thin film solar cells, Thin Solid FilmsIndium Galenide Films Thin-film solar cells are created bycandidate for thin- film solar cells. CIGS solar cell

  11. Viscous-poroelastic interaction as mechanism to create adhesion in frogs' toe pads

    E-Print Network [OSTI]

    Tulchinsky, A

    2015-01-01

    The toe pads of frogs consist of soft hexagonal structures and a viscous liquid contained between and within the hexagonal structures. It has been hypothesized that this configuration creates adhesion by allowing for long range capillary forces, or alternatively, by allowing for exit of the liquid and thus improving contact of the toe pad. In this work we suggest interaction between viscosity and elasticity as a mechanism to create temporary adhesion, even in the absence of capillary effects or van der Waals forces. We initially illustrate this concept experimentally by a simplified configuration consisting of two surfaces connected by a liquid bridge and elastic springs. We then utilize poroelastic mixture theory and model frog's toe pads as an elastic porous medium, immersed within a viscous liquid and pressed against a rigid rough surface. The flow between the surface and the toe pad is modeled by the lubrication approximation. Inertia is neglected and analysis of the elastic-viscous dynamics yields a gove...

  12. Grid-scale Fluctuations and Forecast Error in Wind Power

    E-Print Network [OSTI]

    G. Bel; C. P. Connaughton; M. Toots; M. M. Bandi

    2015-03-29

    The fluctuations in wind power entering an electrical grid (Irish grid) were analyzed and found to exhibit correlated fluctuations with a self-similar structure, a signature of large-scale correlations in atmospheric turbulence. The statistical structure of temporal correlations for fluctuations in generated and forecast time series was used to quantify two types of forecast error: a timescale error ($e_{\\tau}$) that quantifies the deviations between the high frequency components of the forecast and the generated time series, and a scaling error ($e_{\\zeta}$) that quantifies the degree to which the models fail to predict temporal correlations in the fluctuations of the generated power. With no $a$ $priori$ knowledge of the forecast models, we suggest a simple memory kernel that reduces both the timescale error ($e_{\\tau}$) and the scaling error ($e_{\\zeta}$).

  13. Grid-scale Fluctuations and Forecast Error in Wind Power

    E-Print Network [OSTI]

    Bel, G; Toots, M; Bandi, M M

    2015-01-01

    The fluctuations in wind power entering an electrical grid (Irish grid) were analyzed and found to exhibit correlated fluctuations with a self-similar structure, a signature of large-scale correlations in atmospheric turbulence. The statistical structure of temporal correlations for fluctuations in generated and forecast time series was used to quantify two types of forecast error: a timescale error ($e_{\\tau}$) that quantifies the deviations between the high frequency components of the forecast and the generated time series, and a scaling error ($e_{\\zeta}$) that quantifies the degree to which the models fail to predict temporal correlations in the fluctuations of the generated power. With no $a$ $priori$ knowledge of the forecast models, we suggest a simple memory kernel that reduces both the timescale error ($e_{\\tau}$) and the scaling error ($e_{\\zeta}$).

  14. Using error correction to determine the noise model

    E-Print Network [OSTI]

    M. Laforest; D. Simon; J. -C. Boileau; J. Baugh; M. Ditty; R. Laflamme

    2007-01-25

    Quantum error correcting codes have been shown to have the ability of making quantum information resilient against noise. Here we show that we can use quantum error correcting codes as diagnostics to characterise noise. The experiment is based on a three-bit quantum error correcting code carried out on a three-qubit nuclear magnetic resonance (NMR) quantum information processor. Utilizing both engineered and natural noise, the degree of correlations present in the noise affecting a two-qubit subsystem was determined. We measured a correlation factor of c=0.5+/-0.2 using the error correction protocol, and c=0.3+/-0.2 using a standard NMR technique based on coherence pathway selection. Although the error correction method demands precise control, the results demonstrate that the required precision is achievable in the liquid-state NMR setting.

  15. Error Control of Iterative Linear Solvers for Integrated Groundwater Models

    E-Print Network [OSTI]

    Dixon, Matthew; Brush, Charles; Chung, Francis; Dogrul, Emin; Kadir, Tariq

    2010-01-01

    An open problem that arises when using modern iterative linear solvers, such as the preconditioned conjugate gradient (PCG) method or Generalized Minimum RESidual method (GMRES) is how to choose the residual tolerance in the linear solver to be consistent with the tolerance on the solution error. This problem is especially acute for integrated groundwater models which are implicitly coupled to another model, such as surface water models, and resolve both multiple scales of flow and temporal interaction terms, giving rise to linear systems with variable scaling. This article uses the theory of 'forward error bound estimation' to show how rescaling the linear system affects the correspondence between the residual error in the preconditioned linear system and the solution error. Using examples of linear systems from models developed using the USGS GSFLOW package and the California State Department of Water Resources' Integrated Water Flow Model (IWFM), we observe that this error bound guides the choice of a prac...

  16. Effect of Field Errors in Muon Collider IR Magnets on Beam Dynamics

    SciTech Connect (OSTI)

    Alexahin, Y.; Gianfelice-Wendt, E.; Kapin, V.V.; /Fermilab

    2012-05-01

    In order to achieve peak luminosity of a Muon Collider (MC) in the 10{sup 35} cm{sup -2}s{sup -1} range very small values of beta-function at the interaction point (IP) are necessary ({beta}* {le} 1 cm) while the distance from IP to the first quadrupole can not be made shorter than {approx}6 m as dictated by the necessity of detector protection from backgrounds. In the result the beta-function at the final focus quadrupoles can reach 100 km making beam dynamics very sensitive to all kind of errors. In the present report we consider the effects on momentum acceptance and dynamic aperture of multipole field errors in the body of IR dipoles as well as of fringe-fields in both dipoles and quadrupoles in the ase of 1.5 TeV (c.o.m.) MC. Analysis shows these effects to be strong but correctable with dedicated multipole correctors.

  17. d Creating new technologies for dissemination and commercialization Continuously impr North Carolina and beyond Creating new technologies for dissemination and commercializ

    E-Print Network [OSTI]

    Frey, H. Christopher

    d · Creating new technologies for dissemination and commercialization · Continuously impr North Carolina and beyond · Creating new technologies for dissemination and commercializ contemporary workforce for North Carolina and beyond · Creating new technologies for diss e processes · Educating a contemporary

  18. Error-eliminating rapid ultrasonic firing

    DOE Patents [OSTI]

    Borenstein, Johann (Ann Arbor, MI); Koren, Yoram (Ann Arbor, MI)

    1993-08-24

    A system for producing reliable navigation data for a mobile vehicle, such as a robot, combines multiple range samples to increase the "confidence" of the algorithm in the existence of an obstacle. At higher vehicle speed, it is crucial to sample each sensor quickly and repeatedly to gather multiple samples in time to avoid a collision. Erroneous data is rejected by delaying the issuance of an ultrasonic energy pulse by a predetermined wait-period, which may be different during alternate ultrasonic firing cycles. Consecutive readings are compared, and the corresponding data is rejected if the readings differ by more than a predetermined amount. The rejection rate for the data is monitored and the operating speed of the navigation system is reduced if the data rejection rate is increased. This is useful to distinguish and eliminate noise from the data which truly represents the existence of an article in the field of operation of the vehicle.

  19. Error-eliminating rapid ultrasonic firing

    DOE Patents [OSTI]

    Borenstein, J.; Koren, Y.

    1993-08-24

    A system for producing reliable navigation data for a mobile vehicle, such as a robot, combines multiple range samples to increase the confidence'' of the algorithm in the existence of an obstacle. At higher vehicle speed, it is crucial to sample each sensor quickly and repeatedly to gather multiple samples in time to avoid a collision. Erroneous data is rejected by delaying the issuance of an ultrasonic energy pulse by a predetermined wait-period, which may be different during alternate ultrasonic firing cycles. Consecutive readings are compared, and the corresponding data is rejected if the readings differ by more than a predetermined amount. The rejection rate for the data is monitored and the operating speed of the navigation system is reduced if the data rejection rate is increased. This is useful to distinguish and eliminate noise from the data which truly represents the existence of an article in the field of operation of the vehicle.

  20. Slope Error Measurement Tool for Solar Parabolic Trough Collectors: Preprint

    SciTech Connect (OSTI)

    Stynes, J. K.; Ihas, B.

    2012-04-01

    The National Renewable Energy Laboratory (NREL) has developed an optical measurement tool for parabolic solar collectors that measures the combined errors due to absorber misalignment and reflector slope error. The combined absorber alignment and reflector slope errors are measured using a digital camera to photograph the reflected image of the absorber in the collector. Previous work using the image of the reflection of the absorber finds the reflector slope errors from the reflection of the absorber and an independent measurement of the absorber location. The accuracy of the reflector slope error measurement is thus dependent on the accuracy of the absorber location measurement. By measuring the combined reflector-absorber errors, the uncertainty in the absorber location measurement is eliminated. The related performance merit, the intercept factor, depends on the combined effects of the absorber alignment and reflector slope errors. Measuring the combined effect provides a simpler measurement and a more accurate input to the intercept factor estimate. The minimal equipment and setup required for this measurement technique make it ideal for field measurements.

  1. Catastrophic photometric redshift errors: Weak-lensing survey requirements

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

    Bernstein, Gary; Huterer, Dragan

    2010-01-11

    We study the sensitivity of weak lensing surveys to the effects of catastrophic redshift errors - cases where the true redshift is misestimated by a significant amount. To compute the biases in cosmological parameters, we adopt an efficient linearized analysis where the redshift errors are directly related to shifts in the weak lensing convergence power spectra. We estimate the number Nspec of unbiased spectroscopic redshifts needed to determine the catastrophic error rate well enough that biases in cosmological parameters are below statistical errors of weak lensing tomography. While the straightforward estimate of Nspec is ~106 we find that using onlymore »the photometric redshifts with z ? 2.5 leads to a drastic reduction in Nspec to ~ 30,000 while negligibly increasing statistical errors in dark energy parameters. Therefore, the size of spectroscopic survey needed to control catastrophic errors is similar to that previously deemed necessary to constrain the core of the zs – zp distribution. We also study the efficacy of the recent proposal to measure redshift errors by cross-correlation between the photo-z and spectroscopic samples. We find that this method requires ~ 10% a priori knowledge of the bias and stochasticity of the outlier population, and is also easily confounded by lensing magnification bias. In conclusion, the cross-correlation method is therefore unlikely to supplant the need for a complete spectroscopic redshift survey of the source population.« less

  2. Balancing aggregation and smoothing errors in inverse models

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

    Turner, A. J.; Jacob, D. J.

    2015-01-13

    Inverse models use observations of a system (observation vector) to quantify the variables driving that system (state vector) by statistical optimization. When the observation vector is large, such as with satellite data, selecting a suitable dimension for the state vector is a challenge. A state vector that is too large cannot be effectively constrained by the observations, leading to smoothing error. However, reducing the dimension of the state vector leads to aggregation error as prior relationships between state vector elements are imposed rather than optimized. Here we present a method for quantifying aggregation and smoothing errors as a function ofmore »state vector dimension, so that a suitable dimension can be selected by minimizing the combined error. Reducing the state vector within the aggregation error constraints can have the added advantage of enabling analytical solution to the inverse problem with full error characterization. We compare three methods for reducing the dimension of the state vector from its native resolution: (1) merging adjacent elements (grid coarsening), (2) clustering with principal component analysis (PCA), and (3) applying a Gaussian mixture model (GMM) with Gaussian pdfs as state vector elements on which the native-resolution state vector elements are projected using radial basis functions (RBFs). The GMM method leads to somewhat lower aggregation error than the other methods, but more importantly it retains resolution of major local features in the state vector while smoothing weak and broad features.« less

  3. Balancing aggregation and smoothing errors in inverse models

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

    Turner, A. J.; Jacob, D. J.

    2015-06-30

    Inverse models use observations of a system (observation vector) to quantify the variables driving that system (state vector) by statistical optimization. When the observation vector is large, such as with satellite data, selecting a suitable dimension for the state vector is a challenge. A state vector that is too large cannot be effectively constrained by the observations, leading to smoothing error. However, reducing the dimension of the state vector leads to aggregation error as prior relationships between state vector elements are imposed rather than optimized. Here we present a method for quantifying aggregation and smoothing errors as a function ofmore »state vector dimension, so that a suitable dimension can be selected by minimizing the combined error. Reducing the state vector within the aggregation error constraints can have the added advantage of enabling analytical solution to the inverse problem with full error characterization. We compare three methods for reducing the dimension of the state vector from its native resolution: (1) merging adjacent elements (grid coarsening), (2) clustering with principal component analysis (PCA), and (3) applying a Gaussian mixture model (GMM) with Gaussian pdfs as state vector elements on which the native-resolution state vector elements are projected using radial basis functions (RBFs). The GMM method leads to somewhat lower aggregation error than the other methods, but more importantly it retains resolution of major local features in the state vector while smoothing weak and broad features.« less

  4. Measuring worst-case errors in a robot workcell

    SciTech Connect (OSTI)

    Simon, R.W.; Brost, R.C.; Kholwadwala, D.K. [Sandia National Labs., Albuquerque, NM (United States). Intelligent Systems and Robotics Center

    1997-10-01

    Errors in model parameters, sensing, and control are inevitably present in real robot systems. These errors must be considered in order to automatically plan robust solutions to many manipulation tasks. Lozano-Perez, Mason, and Taylor proposed a formal method for synthesizing robust actions in the presence of uncertainty; this method has been extended by several subsequent researchers. All of these results presume the existence of worst-case error bounds that describe the maximum possible deviation between the robot`s model of the world and reality. This paper examines the problem of measuring these error bounds for a real robot workcell. These measurements are difficult, because of the desire to completely contain all possible deviations while avoiding bounds that are overly conservative. The authors present a detailed description of a series of experiments that characterize and quantify the possible errors in visual sensing and motion control for a robot workcell equipped with standard industrial robot hardware. In addition to providing a means for measuring these specific errors, these experiments shed light on the general problem of measuring worst-case errors.

  5. Wind Power Forecasting Error Distributions: An International Comparison; Preprint

    SciTech Connect (OSTI)

    Hodge, B. M.; Lew, D.; Milligan, M.; Holttinen, H.; Sillanpaa, S.; Gomez-Lazaro, E.; Scharff, R.; Soder, L.; Larsen, X. G.; Giebel, G.; Flynn, D.; Dobschinski, J.

    2012-09-01

    Wind power forecasting is expected to be an important enabler for greater penetration of wind power into electricity systems. Because no wind forecasting system is perfect, a thorough understanding of the errors that do occur can be critical to system operation functions, such as the setting of operating reserve levels. This paper provides an international comparison of the distribution of wind power forecasting errors from operational systems, based on real forecast data. The paper concludes with an assessment of similarities and differences between the errors observed in different locations.

  6. Method and Apparatus for Creating a Topography at a Surface

    DOE Patents [OSTI]

    Adams, David P. (Albuquerque, NM); Sinclair, Michael B. (Albuquerque, NM); Mayer, Thomas M. (Albuquerque, NM); Vasile, Michael J. (Albuquerque, NM); Sweatt, William C. (Albuquerque, NM)

    2008-11-11

    Methods and apparatus whereby an optical interferometer is utilized to monitor and provide feedback control to an integrated energetic particle column, to create desired topographies, including the depth, shape and/or roughness of features, at a surface of a specimen. Energetic particle columns can direct energetic species including, ions, photons and/or neutral particles to a surface to create features having in-plane dimensions on the order of 1 micron, and a height or depth on the order of 1 nanometer. Energetic processes can include subtractive processes such as sputtering, ablation, focused ion beam milling and, additive processes, such as energetic beam induced chemical vapor deposition. The integration of interferometric methods with processing by energetic species offers the ability to create desired topographies at surfaces, including planar and curved shapes.

  7. A complete Randomized Benchmarking Protocol accounting for Leakage Errors

    E-Print Network [OSTI]

    T. Chasseur; F. K. Wilhelm

    2015-07-09

    Randomized Benchmarking allows to efficiently and scalably characterize the average error of an unitary 2-design such as the Clifford group $\\mathcal{C}$ on a physical candidate for quantum computation, as long as there are no non-computational leakage levels in the system. We investigate the effect of leakage errors on Randomized Benchmarking induced from an additional level per physical qubit and provide a modified protocol that allows to derive reliable estimates for the error per gate in their presence. We assess the variance of the sequence fidelity corresponding to the number of random sequences needed for valid fidelity estimation. Our protocol allows for gate dependent error channels without being restricted to perturbations. We show that our protocol is compatible with Interleaved Randomized Benchmarking and expand to benchmarking of arbitrary gates. This setting is relevant for superconducting transmon qubits, among other systems.

  8. Honest Confidence Intervals for the Error Variance in Stepwise Regression

    E-Print Network [OSTI]

    Stine, Robert A.

    Honest Confidence Intervals for the Error Variance in Stepwise Regression Dean P. Foster and Robert alternatives are used. These simpler algorithms (e.g., forward or backward stepwise regression) obtain

  9. Servo control booster system for minimizing following error

    DOE Patents [OSTI]

    Wise, William L. (Mountain View, CA)

    1985-01-01

    A closed-loop feedback-controlled servo system is disclosed which reduces command-to-response error to the system's position feedback resolution least increment, .DELTA.S.sub.R, on a continuous real-time basis for all operating speeds. The servo system employs a second position feedback control loop on a by exception basis, when the command-to-response error .gtoreq..DELTA.S.sub.R, to produce precise position correction signals. When the command-to-response error is less than .DELTA.S.sub.R, control automatically reverts to conventional control means as the second position feedback control loop is disconnected, becoming transparent to conventional servo control means. By operating the second unique position feedback control loop used herein at the appropriate clocking rate, command-to-response error may be reduced to the position feedback resolution least increment. The present system may be utilized in combination with a tachometer loop for increased stability.

  10. Removing Systematic Errors from Rotating Shadowband Pyranometer Data Frank Vignola

    E-Print Network [OSTI]

    Oregon, University of

    of the pyranometer to briefly shade the pyranometer once a minute. Direct hori- zontal irradiance is calculated used in programs evaluating the performance of photovoltaic systems, and systematic errors in the data

  11. Error estimation and adaptive mesh refinement for aerodynamic flows

    E-Print Network [OSTI]

    Hartmann, Ralf

    Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston, 38108 Braunschweig, Germany Ralf.Hartmann@dlr.de 2 School of Mathematical Sciences University

  12. MULTITARGET ERROR ESTIMATION AND ADAPTIVITY IN AERODYNAMIC FLOW SIMULATIONS

    E-Print Network [OSTI]

    Hartmann, Ralf

    MULTI­TARGET ERROR ESTIMATION AND ADAPTIVITY IN AERODYNAMIC FLOW SIMULATIONS RALF HARTMANN of Scientific Computing, TU Braunschweig, Germany (Ralf.Hartmann@dlr.de). 1 #12; 2 R. HARTMANN

  13. Error estimation and adaptive mesh refinement for aerodynamic flows

    E-Print Network [OSTI]

    Hartmann, Ralf

    Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann, Joachim Held), Lilien- thalplatz 7, 38108 Braunschweig, Germany, e-mail: Ralf.Hartmann@dlr.de 1 #12;2 Ralf Hartmann

  14. MULTITARGET ERROR ESTIMATION AND ADAPTIVITY IN AERODYNAMIC FLOW SIMULATIONS

    E-Print Network [OSTI]

    Hartmann, Ralf

    MULTITARGET ERROR ESTIMATION AND ADAPTIVITY IN AERODYNAMIC FLOW SIMULATIONS RALF HARTMANN Abstract, Germany (Ralf.Hartmann@dlr.de). 1 #12;2 R. HARTMANN quantity under consideration. However, in many

  15. Inflated applicants: Attribution errors in performance evaluation by professionals

    E-Print Network [OSTI]

    Swift, Samuel; Moore, Don; Sharek, Zachariah; Gino, Francesca

    2013-01-01

    performance among applicants from each ‘‘type’’ of school.and interview performance. Each school provided multi-yearschool, PLOS ONE | www.plosone.org July 2013 | Volume 8 | Issue 7 | e69258 Attribution Errors in Performance

  16. Wind Power Forecasting Error Distributions over Multiple Timescales: Preprint

    SciTech Connect (OSTI)

    Hodge, B. M.; Milligan, M.

    2011-03-01

    In this paper, we examine the shape of the persistence model error distribution for ten different wind plants in the ERCOT system over multiple timescales. Comparisons are made between the experimental distribution shape and that of the normal distribution.

  17. On Student's 1908 Article "The Probable Error of a Mean"

    E-Print Network [OSTI]

    Kim, Jong-Min

    's "attention" resulted in a report, "The Application of the `Law of Error' to the work of the Brewery" dated No] and other records available in their Dublin brewery"; see Pearson 1939, p. 213.) Unable to find

  18. Performance optimizations for compiler-based error detection 

    E-Print Network [OSTI]

    Mitropoulou, Konstantina

    2015-06-29

    The trend towards smaller transistor technologies and lower operating voltages stresses the hardware and makes transistors more susceptible to transient errors. In future systems, performance and power gains will come ...

  19. Efficient Semiparametric Estimators for Biological, Genetic, and Measurement Error Applications 

    E-Print Network [OSTI]

    Garcia, Tanya

    2012-10-19

    Many statistical models, like measurement error models, a general class of survival models, and a mixture data model with random censoring, are semiparametric where interest lies in estimating finite-dimensional parameters ...

  20. Error bars for linear and nonlinear neural network regression models

    E-Print Network [OSTI]

    Penny, Will

    Error bars for linear and nonlinear neural network regression models William D. Penny and Stephen J College of Science, Technology and Medicine, London SW7 2BT., U.K. w.penny@ic.ac.uk, s

  1. NOVELTY, CONFIDENCE & ERRORS IN CONNECTIONIST Stephen J. Roberts & William Penny

    E-Print Network [OSTI]

    Roberts, Stephen

    d NOVELTY, CONFIDENCE & ERRORS IN CONNECTIONIST SYSTEMS Stephen J. Roberts & William Penny Neural, Technology & Medicine London, UK s.j.roberts@ic.ac.uk, w.penny@ic.ac.uk April 21, 1997 Abstract Key words

  2. Predicting Intentional Tax Error Using Open Source Literature and Data

    E-Print Network [OSTI]

    for each PUMS respondent (or agent), in certain line item/taxpayer categories, allowing us to construct dis-Likelihood . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Results of Meta-Analysis 12 6 Intentional Error in Line Items/Taxpayer Categories 13 6

  3. SU-E-T-51: Bayesian Network Models for Radiotherapy Error Detection

    SciTech Connect (OSTI)

    Kalet, A; Phillips, M; Gennari, J [UniversityWashington, Seattle, WA (United States)

    2014-06-01

    Purpose: To develop a probabilistic model of radiotherapy plans using Bayesian networks that will detect potential errors in radiation delivery. Methods: Semi-structured interviews with medical physicists and other domain experts were employed to generate a set of layered nodes and arcs forming a Bayesian Network (BN) which encapsulates relevant radiotherapy concepts and their associated interdependencies. Concepts in the final network were limited to those whose parameters are represented in the institutional database at a level significant enough to develop mathematical distributions. The concept-relation knowledge base was constructed using the Web Ontology Language (OWL) and translated into Hugin Expert Bayes Network files via the the RHugin package in the R statistical programming language. A subset of de-identified data derived from a Mosaiq relational database representing 1937 unique prescription cases was processed and pre-screened for errors and then used by the Hugin implementation of the Estimation-Maximization (EM) algorithm for machine learning all parameter distributions. Individual networks were generated for each of several commonly treated anatomic regions identified by ICD-9 neoplasm categories including lung, brain, lymphoma, and female breast. Results: The resulting Bayesian networks represent a large part of the probabilistic knowledge inherent in treatment planning. By populating the networks entirely with data captured from a clinical oncology information management system over the course of several years of normal practice, we were able to create accurate probability tables with no additional time spent by experts or clinicians. These probabilistic descriptions of the treatment planning allow one to check if a treatment plan is within the normal scope of practice, given some initial set of clinical evidence and thereby detect for potential outliers to be flagged for further investigation. Conclusion: The networks developed here support the use of probabilistic models into clinical chart checking for improved detection of potential errors in RT plans.

  4. Creating A Galactic Plane Atlas With Amazon Web Services

    E-Print Network [OSTI]

    Berriman, G Bruce; Good, John; Juve, Gideon; Kinney, Jamie; Merrihew, Ann; Rynge, Mats

    2013-01-01

    This paper describes by example how astronomers can use cloud-computing resources offered by Amazon Web Services (AWS) to create new datasets at scale. We have created from existing surveys an atlas of the Galactic Plane at 16 wavelengths from 1 {\\mu}m to 24 {\\mu}m with pixels co-registered at spatial sampling of 1 arcsec. We explain how open source tools support management and operation of a virtual cluster on AWS platforms to process data at scale, and describe the technical issues that users will need to consider, such as optimization of resources, resource costs, and management of virtual machine instances.

  5. Industries of the Future: Creating a Sustainable Technology Edge 

    E-Print Network [OSTI]

    Glatt, S. L.

    2000-01-01

    OF THE FUTURE: Creating A Sustainable Technology Edge Sandra L. Glatt Office of Industrial Technologies Energy Efficiency and Renewable Energy U. S. Department of Energy 55 ESL-IE-00-04-10 Proceedings from the Twenty-second National Industrial Energy....S, Department of Energy Industries of the Future: Creating a Sustainable Technology Edge . cUn' OFwlOd CCooI .. LPG .Eleclric~ CNI!hnIG. AgriclAtll'e Mining A1uminu",J Totll1* kldutb't.1 Conllomption: :W, 111 TrtIlion 8tus Forest E"~ ?'913 1976...

  6. Suboptimal quantum-error-correcting procedure based on semidefinite programming

    E-Print Network [OSTI]

    Naoki Yamamoto; Shinji Hara; Koji Tsumura

    2006-06-13

    In this paper, we consider a simplified error-correcting problem: for a fixed encoding process, to find a cascade connected quantum channel such that the worst fidelity between the input and the output becomes maximum. With the use of the one-to-one parametrization of quantum channels, a procedure finding a suboptimal error-correcting channel based on a semidefinite programming is proposed. The effectiveness of our method is verified by an example of the bit-flip channel decoding.

  7. Predicting error in detecting mammographic masses among radiology trainees using statistical models based on BI-RADS features

    SciTech Connect (OSTI)

    Grimm, Lars J., E-mail: Lars.grimm@duke.edu; Ghate, Sujata V.; Yoon, Sora C.; Kim, Connie [Department of Radiology, Duke University Medical Center, Box 3808, Durham, North Carolina 27710 (United States)] [Department of Radiology, Duke University Medical Center, Box 3808, Durham, North Carolina 27710 (United States); Kuzmiak, Cherie M. [Department of Radiology, University of North Carolina School of Medicine, 2006 Old Clinic, CB No. 7510, Chapel Hill, North Carolina 27599 (United States)] [Department of Radiology, University of North Carolina School of Medicine, 2006 Old Clinic, CB No. 7510, Chapel Hill, North Carolina 27599 (United States); Mazurowski, Maciej A. [Duke University Medical Center, Box 2731 Medical Center, Durham, North Carolina 27710 (United States)] [Duke University Medical Center, Box 2731 Medical Center, Durham, North Carolina 27710 (United States)

    2014-03-15

    Purpose: The purpose of this study is to explore Breast Imaging-Reporting and Data System (BI-RADS) features as predictors of individual errors made by trainees when detecting masses in mammograms. Methods: Ten radiology trainees and three expert breast imagers reviewed 100 mammograms comprised of bilateral medial lateral oblique and craniocaudal views on a research workstation. The cases consisted of normal and biopsy proven benign and malignant masses. For cases with actionable abnormalities, the experts recorded breast (density and axillary lymph nodes) and mass (shape, margin, and density) features according to the BI-RADS lexicon, as well as the abnormality location (depth and clock face). For each trainee, a user-specific multivariate model was constructed to predict the trainee's likelihood of error based on BI-RADS features. The performance of the models was assessed using area under the receive operating characteristic curves (AUC). Results: Despite the variability in errors between different trainees, the individual models were able to predict the likelihood of error for the trainees with a mean AUC of 0.611 (range: 0.502–0.739, 95% Confidence Interval: 0.543–0.680,p < 0.002). Conclusions: Patterns in detection errors for mammographic masses made by radiology trainees can be modeled using BI-RADS features. These findings may have potential implications for the development of future educational materials that are personalized to individual trainees.

  8. TESLA-FEL 2009-07 Errors in Reconstruction of Difference Orbit

    E-Print Network [OSTI]

    Contents 1 Introduction 1 2 Standard Least Squares Solution 2 3 Error Emittance and Error Twiss Parameters as the position of the reconstruction point changes, we will introduce error Twiss parameters and invariant error in the point of interest has to be achieved by matching error Twiss parameters in this point to the desired

  9. A Taxonomy to Enable Error Recovery and Correction in Software Vilas Sridharan

    E-Print Network [OSTI]

    Kaeli, David R.

    A Taxonomy to Enable Error Recovery and Correction in Software Vilas Sridharan ECE Department years, reliability research has largely used the following taxonomy of errors: Undetected Errors Errors (CE). While this taxonomy is suitable to characterize hardware error detection and correction

  10. A simple real-word error detection and correction using local word bigram and trigram

    E-Print Network [OSTI]

    A simple real-word error detection and correction using local word bigram and trigram Pratip bbcisical@gmail.com Abstract Spelling error is broadly classified in two categories namely non word error and real word error. In this paper a localized real word error detection and correction method is proposed

  11. Compiler-Assisted Detection of Transient Memory Errors

    SciTech Connect (OSTI)

    Tavarageri, Sanket; Krishnamoorthy, Sriram; Sadayappan, Ponnuswamy

    2014-06-09

    The probability of bit flips in hardware memory systems is projected to increase significantly as memory systems continue to scale in size and complexity. Effective hardware-based error detection and correction requires that the complete data path, involving all parts of the memory system, be protected with sufficient redundancy. First, this may be costly to employ on commodity computing platforms and second, even on high-end systems, protection against multi-bit errors may be lacking. Therefore, augmenting hardware error detection schemes with software techniques is of consider- able interest. In this paper, we consider software-level mechanisms to comprehensively detect transient memory faults. We develop novel compile-time algorithms to instrument application programs with checksum computation codes so as to detect memory errors. Unlike prior approaches that employ checksums on computational and architectural state, our scheme verifies every data access and works by tracking variables as they are produced and consumed. Experimental evaluation demonstrates that the proposed comprehensive error detection solution is viable as a completely software-only scheme. We also demonstrate that with limited hardware support, overheads of error detection can be further reduced.

  12. Error Rate Comparison during Polymerase Chain Reaction by DNA Polymerase

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

    McInerney, Peter; Adams, Paul; Hadi, Masood Z.

    2014-01-01

    As larger-scale cloning projects become more prevalent, there is an increasing need for comparisons among high fidelity DNA polymerases used for PCR amplification. All polymerases marketed for PCR applications are tested for fidelity properties (i.e., error rate determination) by vendors, and numerous literature reports have addressed PCR enzyme fidelity. Nonetheless, it is often difficult to make direct comparisons among different enzymes due to numerous methodological and analytical differences from study to study. We have measured the error rates for 6 DNA polymerases commonly used in PCR applications, including 3 polymerases typically used for cloning applications requiring high fidelity. Errormore »rate measurement values reported here were obtained by direct sequencing of cloned PCR products. The strategy employed here allows interrogation of error rate across a very large DNA sequence space, since 94 unique DNA targets were used as templates for PCR cloning. The six enzymes included in the study, Taq polymerase, AccuPrime-Taq High Fidelity, KOD Hot Start, cloned Pfu polymerase, Phusion Hot Start, and Pwo polymerase, we find the lowest error rates with Pfu , Phusion, and Pwo polymerases. Error rates are comparable for these 3 enzymes and are >10x lower than the error rate observed with Taq polymerase. Mutation spectra are reported, with the 3 high fidelity enzymes displaying broadly similar types of mutations. For these enzymes, transition mutations predominate, with little bias observed for type of transition. « less

  13. Job Description Library Create a New Job Description

    E-Print Network [OSTI]

    Pulfrey, David L.

    UBC eRecruit Job Description Library #12;Page 4 Create a New Job Description Navigation: Job Description Library>Add/Edit/Copy Job Descriptions Step 1: Use this page to enter preliminary Job Description, Location: Enter the codes associated with the department. Employment Group, Job Family, Job Code/Classification

  14. Creating a Professional Portfolio Ready ReferenceE-12

    E-Print Network [OSTI]

    Creating a Professional Portfolio Ready ReferenceE-12 College of Engineering, Architecture & Technology Career Services Portfolios aren't just for artists anymore. Long regarded as an essential job effort and time. The Low and High Tech Alternatives You may design a high tech or low tech portfolio

  15. ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW PROPOSAL TO CREATE DISTRICTS

    E-Print Network [OSTI]

    FINAL ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW FOR THE PROPOSAL TO CREATE DISTRICTS WITHIN. . . . . . . . . . . . . . . . . 2 1.2.1Environmental Assessment. . . . . . . . . . . . . . 2 1.2.2Regulatory Impact Review . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.0 ENVIRONMENTAL AND BIOLOGICAL IMPACTS . . . . . . . . . . . . . 4 2.1 Atka Mackerel Biology

  16. Creating Advanced Biosensors with Chips and Light Robert M. Corn

    E-Print Network [OSTI]

    Creating Advanced Biosensors with Chips and Light Robert M. Corn Department of Chemistry University of California, Irvine Surface Bioaffinity Sensors #12;DNA-DNA Binding Surface Bioaffinity Biosensors Surface bioaffinity biosensors use a biochemical recognition event to detect the presence of a target biological

  17. Record Storage Options Created: 11/20/2013

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Record Storage Options Created: 11/20/2013 Revised: 2/17/2014 Storage Option Location and Costs for storage (+) · Does not require that records are extensively organized (+/-) · Does not track destruction periods like personnel records (-) State Storage Center Rocky Hill, Connecticut Cost upfront

  18. Simulated and human metapopulations created by habitat selection

    E-Print Network [OSTI]

    Morris, Douglas W.

    that resident Canadians move between cities to maximize income. Key assumptions: Groups in different habitats to maximize median household income. Conclusion: Local extinction and recolonization is easily created can be treated as different populations. Different Canadian cities represent separate habitats. Income

  19. "Creating computational models of biological systems to better combat

    E-Print Network [OSTI]

    Zhigilei, Leonid V.

    "Creating computational models of biological systems to better combat dangerous pathogens and human of Biomedical Engineering University of Virginia Charlottesville, VA 434.924.8195 Computational Systems Biology system in biofuel and nutraceutical production. With the aid of computational techniques, we can predict

  20. Creating an intelligent agent for StarCraft: Brood War

    E-Print Network [OSTI]

    Ernst, Damien

    Creating an intelligent agent for StarCraft: Brood War University of Liège Faculty of Applied artificialintelligence (AI)? Video games Why real-time strategy (RTS) games? Introduction #12;StarCraft: Brood War a patrol unit #12;Implementation Chapter III #12;StarCraft is not open source! The Brood War Application

  1. Creating a Database on Eucalyptus for California1

    E-Print Network [OSTI]

    Creating a Database on Eucalyptus for California1 Miles L. Merwin2 Increasing interest in rural woodlots for fuelwood and low-maintenance ornamental plants has sparked a resurgence in eucalyptus eucalyptus species that have been intro duced into the state. Despite the fact that eucalyptus have been

  2. Page 1 of 2 Document created: May 20, 2014

    E-Print Network [OSTI]

    /computer monitors, mirrors, polished metal surfaces) Keep your laser pointer off while you are talking, especially as a toy #12;Page 2 of 2 Document created: May 20, 2014 What does a proper label look like? A sample FDA-compliant label and other information that will be seen on laser pointers properly classified and labeled as 3R

  3. Help create a UNLV School of Medicine by

    E-Print Network [OSTI]

    Walker, Lawrence R.

    MEDICINE School of MEDICINE School of A FIRST- CLASS GIFT Help create a UNLV School of Medicine of Medicine demonstrates our community's commitment to the school and can enhance the accreditation process's School of Medicine will be one of the most important factors in the future success and reputation

  4. Creating A Greener Energy Future For the Commonwealth Massachusetts Alternative

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Creating A Greener Energy Future For the Commonwealth Massachusetts Alternative Portfolio Standard For the Commonwealth Overview of MA Portfolio Standard Programs Renewable Energy Portfolio Standard (RPS) Alternative to acquire Renewable Energy Certificates (RECs) and Alternate Energy Credits (AECs) equal to a set

  5. ORIGINAL ARTICLE Percutaneous Cement Injection into a Created Cavity for

    E-Print Network [OSTI]

    Casto, Joseph M.

    on these assumptions by finding minimal pressure increases (9.4 6 8.5 mm Hg) during direct injection of cement into exORIGINAL ARTICLE Percutaneous Cement Injection into a Created Cavity for the Treatment of Vertebral, CA). PV involves the injection of polymethylmethacrylate cement into an injured vertebral body via

  6. Creating Robust Roadmaps for Motion Planning in Changing Environments

    E-Print Network [OSTI]

    van den Berg, Jur

    Creating Robust Roadmaps for Motion Planning in Changing Environments Jur P. van den Berg1 Dennis-- In this paper we introduce a method based on the Probabilistic Roadmap (PRM) Planner to construct robust roadmaps for motion planning in changing environments. PRM's are usually aimed at static environments

  7. Creating 35 mm Camera Active Pixel Sensors by Glenn Chapman*

    E-Print Network [OSTI]

    Chapman, Glenn H.

    #12;Creating 35 mm Camera Active Pixel Sensors by Glenn Chapman* and Yves Audet** * Simon Fraser Pixel Sensor imaging area device is studied which would be ideal for use with standard 35 mm cameras.5 per sq. cm. By being a retrofit for current 35 mm cameras, and having larger photodiode pixels than

  8. Lead exposure at uncovered outdoor firing ranges

    SciTech Connect (OSTI)

    Goldberg, R.L.; Hicks, A.M.; O'Leary, L.M.; London, S. (University of Southern California School of Medicine, Los Angeles (USA))

    1991-06-01

    Excessive lead exposure in shooting instructors at indoor firing ranges and covered outdoor firing ranges has been documented. The City of Los Angeles assessed exposure of its full-time shooting instructors at uncovered outdoor ranges via air monitoring and blood lead-level measurements. Results of these tests revealed that significant lead exposure and absorption can occur at outdoor firing ranges. The use of copper-jacketed ammunition may decrease air lead levels and decrease lead absorption by range instructors.

  9. Bit error rate tester using fast parallel generation of linear recurring sequences

    DOE Patents [OSTI]

    Pierson, Lyndon G.; Witzke, Edward L.; Maestas, Joseph H.

    2003-05-06

    A fast method for generating linear recurring sequences by parallel linear recurring sequence generators (LRSGs) with a feedback circuit optimized to balance minimum propagation delay against maximal sequence period. Parallel generation of linear recurring sequences requires decimating the sequence (creating small contiguous sections of the sequence in each LRSG). A companion matrix form is selected depending on whether the LFSR is right-shifting or left-shifting. The companion matrix is completed by selecting a primitive irreducible polynomial with 1's most closely grouped in a corner of the companion matrix. A decimation matrix is created by raising the companion matrix to the (n*k).sup.th power, where k is the number of parallel LRSGs and n is the number of bits to be generated at a time by each LRSG. Companion matrices with 1's closely grouped in a corner will yield sparse decimation matrices. A feedback circuit comprised of XOR logic gates implements the decimation matrix in hardware. Sparse decimation matrices can be implemented with minimum number of XOR gates, and therefore a minimum propagation delay through the feedback circuit. The LRSG of the invention is particularly well suited to use as a bit error rate tester on high speed communication lines because it permits the receiver to synchronize to the transmitted pattern within 2n bits.

  10. Electromagnetics-Related Aspects of Signaling and Signal Processing for UWB Short Range Radios*

    E-Print Network [OSTI]

    Southern California, University of

    Electromagnetics-Related Aspects of Signaling and Signal Processing for UWB Short Range Radios* A in electromagnetic-related aspects of UWB signaling schemas and signal processing. First, pulse shaping is developed in both the transmitter and receiver, and signal processing at the receiver end. To create efficient

  11. Bayesian Semiparametric Density Deconvolution and Regression in the Presence of Measurement Errors 

    E-Print Network [OSTI]

    Sarkar, Abhra

    2014-06-24

    Although the literature on measurement error problems is quite extensive, solutions to even the most fundamental measurement error problems like density deconvolution and regression with errors-in-covariates are available ...

  12. Estimation of the error for small-sample optimal binary filter design using prior knowledge 

    E-Print Network [OSTI]

    Sabbagh, David L

    1999-01-01

    Optimal binary filters estimate an unobserved ideal quantity from observed quantities. Optimality is with respect to some error criterion, which is usually mean absolute error MAE (or equivalently mean square error) for the binary values. Both...

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

    E-Print Network [OSTI]

    Cherian, Sandhya Mary

    1994-01-01

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

  14. EFFECT OF MANUFACTURING ERRORS ON FIELD QUALITY OF DIPOLE MAGNETS FOR THE SSC

    E-Print Network [OSTI]

    Meuser, R.B.

    2010-01-01

    in Fig. 2. Table 2. Manufacturing Error Mode Groups13-16, 1985 EFFECT OF MANUFACTURING ERRORS ON FIELD QUALITYMag Note-27 EFFECT OF MANUFACTURING ERRORS ON FIELO QUALITY

  15. Structure of minimum-error quantum state discrimination

    E-Print Network [OSTI]

    Joonwoo Bae

    2013-07-19

    Distinguishing different quantum states is a fundamental task having practical applications for information processing. Despite the efforts devoted so far, however, strategies for optimal discrimination are known only for specific examples. We here consider the problem of minimum-error quantum state discrimination where the average error is attempted to be minimized. We show the general structure of minimum-error state discrimination as well as useful properties to derive analytic solutions. Based on the general structure, we present a geometric formulation of the problem, which can be applied to cases where quantum state geometry is clear. We also introduce equivalent classes of sets of quantum states in terms of minimum-error discrimination: sets of quantum states in an equivalence class share the same guessing probability. In particular, for qubit states where the state geometry is found with the Bloch sphere, we illustrate that for an arbitrary set of qubit states, the minimum-error state discrimination with equal prior probabilities can be analytically solved, that is, optimal measurement and the guessing probability are explicitly obtained.

  16. Economic penalties of problems and errors in solar energy systems

    SciTech Connect (OSTI)

    Raman, K.; Sparkes, H.R.

    1983-01-01

    Experience with a large number of installed solar energy systems in the HUD Solar Program has shown that a variety of problems and design/installation errors have occurred in many solar systems, sometimes resulting in substantial additional costs for repair and/or replacement. In this paper, the effect of problems and errors on the economics of solar energy systems is examined. A method is outlined for doing this in terms of selected economic indicators. The method is illustrated by a simple example of a residential solar DHW system. An example of an installed, instrumented solar energy system in the HUD Solar Program is then discussed. Detailed results are given for the effects of the problems and errors on the cash flow, cost of delivered heat, discounted payback period, and life-cycle cost of the solar energy system. Conclusions are drawn regarding the most suitable economic indicators for showing the effects of problems and errors in solar energy systems. A method is outlined for deciding on the maximum justifiable expenditure for maintenance on a solar energy system with problems or errors.

  17. Goal-oriendted local a posteriori error estimator for H(div)

    E-Print Network [OSTI]

    2011-12-15

    Dec 15, 2011 ... error estimator measures the pollution effect from the outside region of D ... error estimators which account for and quantify the pollution effect.

  18. V-228: RealPlayer Buffer Overflow and Memory Corruption Error...

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

    a memory corruption error and execute arbitrary code on the target system. IMPACT: Access control error SOLUTION: vendor recommends upgrading to version 16.0.3.51 Addthis...

  19. Creating a Test in NTER Participant_Guide_2012 | Department of...

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

    Creating a Test in NTER ParticipantGuide2012 Creating a Test in NTER ParticipantGuide2012 Creating a Test in NTER ParticipantGuide2012.pdf More Documents & Publications...

  20. Nuclear Physics Long Range Plan | Jefferson Lab

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

    Nuclear Physics Long Range Plan June 26, 2014 For a couple of years now, we have been waiting to get started on the next nuclear physics long range plan (LRP). What does that mean?...

  1. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  2. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  3. Automatically Creating Design Models from 3D Anthropometry Data

    E-Print Network [OSTI]

    Wuhrer, Stefanie; Bose, Prosenjit

    2011-01-01

    When designing a product that needs to fit the human shape, designers often use a small set of 3D models, called design models, either in physical or digital form, as representative shapes to cover the shape variabilities of the population for which the products are designed. Until recently, the process of creating these models has been an art involving manual interaction and empirical guesswork. The availability of the 3D anthropometric databases provides an opportunity to create design models optimally. In this paper, we propose a novel way to use 3D anthropometric databases to generate design models that represent a given population for design applications such as the sizing of garments and gear. We generate the representative shapes by solving a covering problem in a parameter space. Well-known techniques in computational geometry are used to solve this problem. We demonstrate the method using examples in designing glasses and helmets.

  4. Statistical Assessment of Proton Treatment Plans Under Setup and Range Uncertainties

    SciTech Connect (OSTI)

    Park, Peter C.; Cheung, Joey P.; Zhu, X. Ronald; Lee, Andrew K.; Sahoo, Narayan; Tucker, Susan L.; Liu, Wei; Li, Heng; Mohan, Radhe; Court, Laurence E.; Dong, Lei

    2013-08-01

    Purpose: To evaluate a method for quantifying the effect of setup errors and range uncertainties on dose distribution and dose–volume histogram using statistical parameters; and to assess existing planning practice in selected treatment sites under setup and range uncertainties. Methods and Materials: Twenty passively scattered proton lung cancer plans, 10 prostate, and 1 brain cancer scanning-beam proton plan(s) were analyzed. To account for the dose under uncertainties, we performed a comprehensive simulation in which the dose was recalculated 600 times per given plan under the influence of random and systematic setup errors and proton range errors. On the basis of simulation results, we determined the probability of dose variations and calculated the expected values and standard deviations of dose–volume histograms. The uncertainties in dose were spatially visualized on the planning CT as a probability map of failure to target coverage or overdose of critical structures. Results: The expected value of target coverage under the uncertainties was consistently lower than that of the nominal value determined from the clinical target volume coverage without setup error or range uncertainty, with a mean difference of ?1.1% (?0.9% for breath-hold), ?0.3%, and ?2.2% for lung, prostate, and a brain cases, respectively. The organs with most sensitive dose under uncertainties were esophagus and spinal cord for lung, rectum for prostate, and brain stem for brain cancer. Conclusions: A clinically feasible robustness plan analysis tool based on direct dose calculation and statistical simulation has been developed. Both the expectation value and standard deviation are useful to evaluate the impact of uncertainties. The existing proton beam planning method used in this institution seems to be adequate in terms of target coverage. However, structures that are small in volume or located near the target area showed greater sensitivity to uncertainties.

  5. Texas Adapted Genetic Strategies for Beef Cattle VI: Creating Breeds 

    E-Print Network [OSTI]

    Hammack, Stephen P.

    2009-06-17

    (herd) or groups, often with little if any outside introduction of breeding stock. Varying levels of sometimes intense inbreed-3. ing occurred, but more often linebreeding to highly favored individuals was practiced to increase the relationship... of J. D. Hudgins, Inc. 4 first breed created in the United States by combin- ing existing breeds?the American Brahman?was developed from a foundation better suited to those conditions than the British breeds. The Brahman was formed in the early 1900s...

  6. Reducing collective quantum state rotation errors with reversible dephasing

    SciTech Connect (OSTI)

    Cox, Kevin C.; Norcia, Matthew A.; Weiner, Joshua M.; Bohnet, Justin G.; Thompson, James K.

    2014-12-29

    We demonstrate that reversible dephasing via inhomogeneous broadening can greatly reduce collective quantum state rotation errors, and observe the suppression of rotation errors by more than 21?dB in the context of collective population measurements of the spin states of an ensemble of 2.1×10{sup 5} laser cooled and trapped {sup 87}Rb atoms. The large reduction in rotation noise enables direct resolution of spin state populations 13(1) dB below the fundamental quantum projection noise limit. Further, the spin state measurement projects the system into an entangled state with 9.5(5) dB of directly observed spectroscopic enhancement (squeezing) relative to the standard quantum limit, whereas no enhancement would have been obtained without the suppression of rotation errors.

  7. Characterization of quantum dynamics using quantum error correction

    E-Print Network [OSTI]

    S. Omkar; R. Srikanth; S. Banerjee

    2015-01-27

    Characterizing noisy quantum processes is important to quantum computation and communication (QCC), since quantum systems are generally open. To date, all methods of characterization of quantum dynamics (CQD), typically implemented by quantum process tomography, are \\textit{off-line}, i.e., QCC and CQD are not concurrent, as they require distinct state preparations. Here we introduce a method, "quantum error correction based characterization of dynamics", in which the initial state is any element from the code space of a quantum error correcting code that can protect the state from arbitrary errors acting on the subsystem subjected to the unknown dynamics. The statistics of stabilizer measurements, with possible unitary pre-processing operations, are used to characterize the noise, while the observed syndrome can be used to correct the noisy state. Our method requires at most $2(4^n-1)$ configurations to characterize arbitrary noise acting on $n$ qubits.

  8. Non-Gaussian numerical errors versus mass hierarchy

    E-Print Network [OSTI]

    Y. Meurice; M. B. Oktay

    2000-05-12

    We probe the numerical errors made in renormalization group calculations by varying slightly the rescaling factor of the fields and rescaling back in order to get the same (if there were no round-off errors) zero momentum 2-point function (magnetic susceptibility). The actual calculations were performed with Dyson's hierarchical model and a simplified version of it. We compare the distributions of numerical values obtained from a large sample of rescaling factors with the (Gaussian by design) distribution of a random number generator and find significant departures from the Gaussian behavior. In addition, the average value differ (robustly) from the exact answer by a quantity which is of the same order as the standard deviation. We provide a simple model in which the errors made at shorter distance have a larger weight than those made at larger distance. This model explains in part the non-Gaussian features and why the central-limit theorem does not apply.

  9. Factorization of correspondence and camera error for unconstrained dense correspondence applications

    SciTech Connect (OSTI)

    Knoblauch, D; Hess-Flores, M; Duchaineau, M; Kuester, F

    2009-09-29

    A correspondence and camera error analysis for dense correspondence applications such as structure from motion is introduced. This provides error introspection, opening up the possibility of adaptively and progressively applying more expensive correspondence and camera parameter estimation methods to reduce these errors. The presented algorithm evaluates the given correspondences and camera parameters based on an error generated through simple triangulation. This triangulation is based on the given dense, non-epipolar constraint, correspondences and estimated camera parameters. This provides an error map without requiring any information about the perfect solution or making assumptions about the scene. The resulting error is a combination of correspondence and camera parameter errors. An simple, fast low/high pass filter error factorization is introduced, allowing for the separation of correspondence error and camera error. Further analysis of the resulting error maps is applied to allow efficient iterative improvement of correspondences and cameras.

  10. Full protection of superconducting qubit systems from coupling errors

    E-Print Network [OSTI]

    M. J. Storcz; J. Vala; K. R. Brown; J. Kempe; F. K. Wilhelm; K. B. Whaley

    2005-08-09

    Solid state qubits realized in superconducting circuits are potentially extremely scalable. However, strong decoherence may be transferred to the qubits by various elements of the circuits that couple individual qubits, particularly when coupling is implemented over long distances. We propose here an encoding that provides full protection against errors originating from these coupling elements, for a chain of superconducting qubits with a nearest neighbor anisotropic XY-interaction. The encoding is also seen to provide partial protection against errors deriving from general electronic noise.

  11. When soft controls get slippery: User interfaces and human error

    SciTech Connect (OSTI)

    Stubler, W.F.; O`Hara, J.M.

    1998-12-01

    Many types of products and systems that have traditionally featured physical control devices are now being designed with soft controls--input formats appearing on computer-based display devices and operated by a variety of input devices. A review of complex human-machine systems found that soft controls are particularly prone to some types of errors and may affect overall system performance and safety. This paper discusses the application of design approaches for reducing the likelihood of these errors and for enhancing usability, user satisfaction, and system performance and safety.

  12. Comment on "Optimum Quantum Error Recovery using Semidefinite Programming"

    E-Print Network [OSTI]

    M. Reimpell; R. F. Werner; K. Audenaert

    2006-06-07

    In a recent paper ([1]=quant-ph/0606035) it is shown how the optimal recovery operation in an error correction scheme can be considered as a semidefinite program. As a possible future improvement it is noted that still better error correction might be obtained by optimizing the encoding as well. In this note we present the result of such an improvement, specifically for the four-bit correction of an amplitude damping channel considered in [1]. We get a strict improvement for almost all values of the damping parameter. The method (and the computer code) is taken from our earlier study of such correction schemes (quant-ph/0307138).

  13. Error-prevention scheme with two pairs of qubits

    E-Print Network [OSTI]

    Chu, Shih-I; Yang, Chui-Ping; Han, Siyuan

    2002-09-04

    Ei jue ie j&5ue je i& , e iP$0,1% @6#!. The expressions for HS and HSB are as follows: HS5e0~s I z 1s II z !, *Email address: cpyang@floquet.chem.ku.edu †Email address: sichu@ku.edu ‡ Email address: han@ku.eduError-prevention scheme Chui-Ping Yang.... The sche two pairs of qubits and through error-prevention proc through a decoherence-free subspace for collective p pairs; leakage out of the encoding space due to amp addition, how to construct decoherence-free states for n discussed. DOI: 10.1103/Phys...

  14. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-02-16

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution is disclosed. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna. 46 figs.

  15. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1999-01-01

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna.

  16. Adiabatic freezing of long-range quantum correlations in spin chains

    E-Print Network [OSTI]

    Himadri Shekhar Dhar; Debraj Rakshit; Aditi Sen De; Ujjwal Sen

    2015-02-05

    Establishing long-range quantum correlation is an integral part of several quantum information processing tasks. We consider a process to create quasi long-range quantum discord between the non-interacting end spins of a quantum spin chain, with the end spins weakly coupled to the bulk of the chain. We find that the process is not only capable of creating long-range quantum correlation but the latter remains frozen, when certain weak end-couplings are adiabatically varied, provided they are below certain thresholds. We term this phenomenon as adiabatic freezing of quantum correlation, which is robust to moderate thermal fluctuations. We also find that the energy gap of the system can remain frozen for the adiabatic variations. Moreover, considering the end spins as probes, we show that the freezing length can detect the anisotropy transition in quantum $XY$ spin chains.

  17. Photonic band gaps in three-dimensional network structures with short-range order

    SciTech Connect (OSTI)

    Liew, Seng Fatt; Noh, Heeso; Yang, Jin-Kyu; Schreck, Carl F.; Dufresne, Eric R.; O'Hern, Corey S.; Cao, Hui

    2011-12-15

    We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with different topologies, we find that tetrahedrally connected dielectric networks produce the largest isotropic PBGs. Local uniformity and tetrahedral order are essential to the formation of PBGs in PASs, in addition to short-range geometric order. This work demonstrates that it is possible to create broad, isotropic PBGs for vector light fields in 3D PASs without long-range order.

  18. The heritability of daily ranges in rectal temperature, respiration rate, and pulse rate in lactating cows 

    E-Print Network [OSTI]

    Vega C., Eduardo Humberto

    1957-01-01

    GMV 'KLl% NOIXVEIdSZH ZHflLVKEcBCiU 'IVLVK ar SZONVK ZrZVa n urrISVZIXe SSX THE HERITABILITY QF DAILT RANGES IR RECTAL TRAPE3ATCRE y HE V IRATI CR RATE & AHD PULSE RATE IR LACTATIlgl CCHH A Thesis Muardo Susbarto Vega C Appreved as to style... for the Daily Ranges of Tem- perature, Pulse Rate? snd Respiration Rate of Holsteins and Jerseys Prior to Adjustmsnt . ~ ~ ~ 13 IXX, Beans? Standard Errors, and Nunber of Observations for the Three Chax'aeter istics Beasuxed, After Adjustment ~ ~ ~ ~ ~ 13...

  19. Statistical Constraints on the Error of the Leptonic CP Violation of Neutrinos

    E-Print Network [OSTI]

    Fu, Kai

    2015-01-01

    A constraint on the error of leptonic CP violation, which require the phase $\\delta_{CP}$ to be less than $\\pi/4$ for it to be distinguishable on a $2\\pi$ cycle, is presented. Under this constraint, the effects of neutrino detector 's distance, beam energy, and energy resolution are discussed with reference to the present values of these parameters in experiments. Although an optimized detector performances can minimize the deviation to yield a larger distinguishable range of the leptonic CP phase on a $2\\pi$ cycle, it is not possible to determine an arbitrary leptonic CP phase in the range of $2\\pi$ with the statistics from a single detector because of the existence of two singular points. An efficiency factor $\\eta$ is defined to characterize the distinguishable range of $\\delta_{CP}$. To cover the entire possible $\\delta_{CP}$ range, a combined efficiency factor $\\eta^*$ corresponding to multiple sets of detection parameters with different neutrino beam energies and distances is proposed. The combined effi...

  20. Statistical Constraints on the Error of the Leptonic CP Violation of Neutrinos

    E-Print Network [OSTI]

    Kai Fu; Ying Zhang

    2015-04-28

    A constraint on the error of leptonic CP violation, which require the phase $\\delta_{CP}$ to be less than $\\pi/4$ for it to be distinguishable on a $2\\pi$ cycle, is presented. Under this constraint, the effects of neutrino detector 's distance, beam energy, and energy resolution are discussed with reference to the present values of these parameters in experiments. Although an optimized detector performances can minimize the deviation to yield a larger distinguishable range of the leptonic CP phase on a $2\\pi$ cycle, it is not possible to determine an arbitrary leptonic CP phase in the range of $2\\pi$ with the statistics from a single detector because of the existence of two singular points. An efficiency factor $\\eta$ is defined to characterize the distinguishable range of $\\delta_{CP}$. To cover the entire possible $\\delta_{CP}$ range, a combined efficiency factor $\\eta^*$ corresponding to multiple sets of detection parameters with different neutrino beam energies and distances is proposed. The combined efficiency factors $\\eta^*$ of various major experiments are also presented.

  1. Contributions to Human Errors and Breaches in National Security Applications.

    SciTech Connect (OSTI)

    Pond, D. J.; Houghton, F. K.; Gilmore, W. E.

    2002-01-01

    Los Alamos National Laboratory has recognized that security infractions are often the consequence of various types of human errors (e.g., mistakes, lapses, slips) and/or breaches (i.e., deliberate deviations from policies or required procedures with no intention to bring about an adverse security consequence) and therefore has established an error reduction program based in part on the techniques used to mitigate hazard and accident potentials. One cornerstone of this program, definition of the situational and personal factors that increase the likelihood of employee errors and breaches, is detailed here. This information can be used retrospectively (as in accident investigations) to support and guide inquiries into security incidents or prospectively (as in hazard assessments) to guide efforts to reduce the likelihood of error/incident occurrence. Both approaches provide the foundation for targeted interventions to reduce the influence of these factors and for the formation of subsequent 'lessons learned.' Overall security is enhanced not only by reducing the inadvertent releases of classified information but also by reducing the security and safeguards resources devoted to them, thereby allowing these resources to be concentrated on acts of malevolence.

  2. Backward Error and Condition of Polynomial Eigenvalue Problems \\Lambda

    E-Print Network [OSTI]

    Higham, Nicholas J.

    , 1999 Abstract We develop normwise backward errors and condition numbers for the polyno­ mial eigenvalue Research Council grant GR/L76532. 1 #12; where A l 2 C n\\Thetan , l = 0: m and we refer to P as a â??­matrix. Few direct numerical methods are available for solving the polynomial eigenvalue problem (PEP). When m

  3. DISCRIMINATION AND CLASSIFICATION OF UXO USING MAGNETOMETRY: INVERSION AND ERROR

    E-Print Network [OSTI]

    Sambridge, Malcolm

    DISCRIMINATION AND CLASSIFICATION OF UXO USING MAGNETOMETRY: INVERSION AND ERROR ANALYSIS USING for the different solutions didn't even overlap. Introduction A discrimination and classification strategy ambiguity and possible remanent magnetization the recovered dipole moment is compared to a library

  4. Rate Regions for Coherent and Noncoherent Multisource Network Error Correction

    E-Print Network [OSTI]

    Ho, Tracey

    ,tho,effros}@caltech.edu Joerg Kliewer New Mexico State University Email: jkliewer@nmsu.edu Elona Erez Yale University Email a single error on a network link may lead to a corruption of many received packets at the destination nodes

  5. Optimal Estimation from Relative Measurements: Error Scaling (Extended Abstract)

    E-Print Network [OSTI]

    Hespanha, João Pedro

    "relative" measurement between xu and xv is available: uv = xu - xv + u,v Rk , (u, v) E V × V, (1) whereOptimal Estimation from Relative Measurements: Error Scaling (Extended Abstract) Prabir Barooah Jo~ao P. Hespanha I. ESTIMATION FROM RELATIVE MEASUREMENTS We consider the problem of estimating a number

  6. Low Degree Test with Polynomially Small Error Dana Moshkovitz

    E-Print Network [OSTI]

    Moshkovitz, Dana

    Low Degree Test with Polynomially Small Error Dana Moshkovitz October 19, 2014 Abstract A long line of work in Theoretical Computer Science shows that a function is close to a low degree polynomial iff it is close to a low degree polynomial locally. This is known as low degree testing

  7. Time reversal in thermoacoustic tomography - an error estimate

    E-Print Network [OSTI]

    Hristova, Yulia

    2008-01-01

    The time reversal method in thermoacoustic tomography is used for approximating the initial pressure inside a biological object using measurements of the pressure wave made outside the object. This article presents error estimates for the time reversal method in the cases of variable, non-trapping sound speeds.

  8. Error Control Based Model Reduction for Parameter Optimization of Elliptic

    E-Print Network [OSTI]

    of technical devices that rely on multiscale processes, such as fuel cells or batteries. As the solutionError Control Based Model Reduction for Parameter Optimization of Elliptic Homogenization Problems optimization of elliptic multiscale problems with macroscopic optimization functionals and microscopic material

  9. DISCRIMINATION AND CLASSIFICATION OF UXO USING MAGNETOMETRY: INVERSION AND ERROR

    E-Print Network [OSTI]

    Oldenburg, Douglas W.

    DISCRIMINATION AND CLASSIFICATION OF UXO USING MAGNETOMETRY: INVERSION AND ERROR ANALYSIS USING for the different solutions didn't even overlap. Introduction A discrimination and classification strategy-UXOs dug per UXO). The discrimination and classification methodology depends on the magnitude of the recov

  10. Improving STT-MRAM Density Through Multibit Error Correction

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    . Traditional methods enhance robustness at the cost of area/energy by using larger cell sizes to improve the thermal stability of the MTJ cells. This paper employs multibit error correction with DRAM to the read operation) through TX. A key attribute of an MTJ is the notion of thermal stability. Fig. 2

  11. Designing Automation to Reduce Operator Errors Nancy G. Leveson

    E-Print Network [OSTI]

    Leveson, Nancy

    Designing Automation to Reduce Operator Errors Nancy G. Leveson Computer Science and Engineering University of Washington Everett Palmer NASA Ames Research Center Introduction Advanced automation has been of mode­related problems [SW95]. After studying accidents and incidents in the new, highly automated

  12. Verification of unfold error estimates in the unfold operator code

    SciTech Connect (OSTI)

    Fehl, D.L.; Biggs, F.

    1997-01-01

    Spectral unfolding is an inverse mathematical operation that attempts to obtain spectral source information from a set of response functions and data measurements. Several unfold algorithms have appeared over the past 30 years; among them is the unfold operator (UFO) code written at Sandia National Laboratories. In addition to an unfolded spectrum, the UFO code also estimates the unfold uncertainty (error) induced by estimated random uncertainties in the data. In UFO the unfold uncertainty is obtained from the error matrix. This built-in estimate has now been compared to error estimates obtained by running the code in a Monte Carlo fashion with prescribed data distributions (Gaussian deviates). In the test problem studied, data were simulated from an arbitrarily chosen blackbody spectrum (10 keV) and a set of overlapping response functions. The data were assumed to have an imprecision of 5{percent} (standard deviation). One hundred random data sets were generated. The built-in estimate of unfold uncertainty agreed with the Monte Carlo estimate to within the statistical resolution of this relatively small sample size (95{percent} confidence level). A possible 10{percent} bias between the two methods was unresolved. The Monte Carlo technique is also useful in underdetermined problems, for which the error matrix method does not apply. UFO has been applied to the diagnosis of low energy x rays emitted by Z-pinch and ion-beam driven hohlraums. {copyright} {ital 1997 American Institute of Physics.}

  13. ARTIFICIAL INTELLIGENCE 223 A Geometric Approach to Error

    E-Print Network [OSTI]

    Richardson, David

    ARTIFICIAL INTELLIGENCE 223 A Geometric Approach to Error Detection and Recovery for Robot Motion, and uncertainty in the geometric * This report describes research done at the Artificial Intelligence Laboratory of the Massach- usetts Institute of Technology. Support for the Laboratory's Artificial Intelligence research

  14. Control del Error para la Multirresoluci on Quincunx a la

    E-Print Network [OSTI]

    Amat, Sergio

    multirresoluci#19;on discreta no lineal de Harten. En los algoritmos de multirresoluci#19;on se transforma una obtiene ^ f L la cual debera de estar cerca de #22; f L . Por lo tanto, los algoritmos no deben de ser inestables. En este estudio, introduciremos algoritmos de control del error y de la estabilidad. Se obtendr

  15. Error Bounds from Extra Precise Iterative Refinement James Demmel

    E-Print Network [OSTI]

    Li, Xiaoye Sherry

    now prevented its adoption in standard subroutine libraries like LAPACK: (1) There was no standard way a reliable error bound for the computed solution. The completion of the new BLAS Technical Forum Standard [5 Cooperative Agreement No. ACI-9619020; NSF Grant Nos. ACI-9813362 and CCF-0444486; the DOE Grant Nos. DE-FG03

  16. Error rate and power dissipation in nano-logic devices 

    E-Print Network [OSTI]

    Kim, Jong Un

    2005-08-29

    of an error-free condition on temperature in single electron logic processors is derived. The size of the quantum dot of single electron transistor is predicted when a single electron logic processor with the a billion single electron transistors works without...

  17. Error rate and power dissipation in nano-logic devices 

    E-Print Network [OSTI]

    Kim, Jong Un

    2004-01-01

    -free condition on temperature in single electron logic processors is derived. The size of the quantum dot of a single electron transistor is predicted when a single electron logic processor with the 10? single electron transistors works without error at room...

  18. Urban Water Demand with Periodic Error Correction David R. Bell

    E-Print Network [OSTI]

    Griffin, Ronald

    them. Econometric estimates of residential demand for water abound (Dalhuisen et al. 2003Urban Water Demand with Periodic Error Correction by David R. Bell and Ronald C. Griffin February, Department of Agricultural Economics, Texas A&M University. #12;Abstract Monthly demand for publicly supplied

  19. Errors-in-variables problems in transient electromagnetic mineral exploration

    E-Print Network [OSTI]

    Braslavsky, Julio H.

    Errors-in-variables problems in transient electromagnetic mineral exploration K. Lau, J. H in transient electromagnetic mineral exploration. A specific sub-problem of interest in this area geological surveys, dia- mond drilling, and airborne mineral exploration. Our interest here is with ground

  20. Energy efficiency of error correction for wireless communication

    E-Print Network [OSTI]

    Havinga, Paul J.M.

    -control is an important issue for mobile computing systems. This includes energy spent in the physical radio transmission and Networking Conference 1999 [7]. #12;ENERGY EFFICIENCY OF ERROR CORRECTION FOR WIRELESS COMMUNICATIONA ­ 2 on the energy of transmission and the energy of redundancy computation. We will show that the computational cost

  1. Error Control of Iterative Linear Solvers for Integrated Groundwater Models

    E-Print Network [OSTI]

    California at Davis, University of

    Error Control of Iterative Linear Solvers for Integrated Groundwater Models by Matthew F. Dixon1 for integrated groundwater models, which are implicitly coupled to another model, such as surface water models in legacy groundwater modeling packages, resulting in the overall simulation speedups as large as 7

  2. Estimating the error distribution function in nonparametric regression

    E-Print Network [OSTI]

    Mueller, Uschi

    Schick, Wolfgang Wefelmeyer Summary: We construct an efficient estimator for the error distribution estimator, influence function #12;2 M¨uller - Schick - Wefelmeyer M¨uller, Schick and Wefelmeyer (2004a. We refer also to the introduction of M¨uller, Schick and Wefelmeyer (2004b). Our proof is complicat

  3. Automatic Error Elimination by Horizontal Code Transfer across Multiple Applications

    E-Print Network [OSTI]

    Polz, Martin

    Automatic Error Elimination by Horizontal Code Transfer across Multiple Applications Stelios CSAIL, Cambridge, MA, USA Abstract We present Code Phage (CP), a system for automatically transferring. To the best of our knowledge, CP is the first system to automatically transfer code across multiple

  4. Error field and magnetic diagnostic modeling for W7-X

    SciTech Connect (OSTI)

    Lazerson, Sam A.; Gates, David A.; NEILSON, GEORGE H.; OTTE, M.; Bozhenkov, S.; Pedersen, T. S.; GEIGER, J.; LORE, J.

    2014-07-01

    The prediction, detection, and compensation of error fields for the W7-X device will play a key role in achieving a high beta (? = 5%), steady state (30 minute pulse) operating regime utilizing the island divertor system [1]. Additionally, detection and control of the equilibrium magnetic structure in the scrape-off layer will be necessary in the long-pulse campaign as bootstrapcurrent evolution may result in poor edge magnetic structure [2]. An SVD analysis of the magnetic diagnostics set indicates an ability to measure the toroidal current and stored energy, while profile variations go undetected in the magnetic diagnostics. An additional set of magnetic diagnostics is proposed which improves the ability to constrain the equilibrium current and pressure profiles. However, even with the ability to accurately measure equilibrium parameters, the presence of error fields can modify both the plasma response and diverter magnetic field structures in unfavorable ways. Vacuum flux surface mapping experiments allow for direct measurement of these modifications to magnetic structure. The ability to conduct such an experiment is a unique feature of stellarators. The trim coils may then be used to forward model the effect of an applied n = 1 error field. This allows the determination of lower limits for the detection of error field amplitude and phase using flux surface mapping. *Research supported by the U.S. DOE under Contract No. DE-AC02-09CH11466 with Princeton University.

  5. Development of an Expert System for Classification of Medical Errors

    E-Print Network [OSTI]

    Kopec, Danny

    in the United States. There has been considerable speculation that these figures are either overestimated published by the Institute of Medicine (IOM) indicated that between 44,000 and 98,000 unnecessary deaths per in hospitals in the IOM report, what is of importance is that the number of deaths caused by such errors

  6. Selected CRC Polynomials Can Correct Errors and Thus Reduce Retransmission

    E-Print Network [OSTI]

    Mache, Jens

    sensor networks, minimizing communication is crucial to improve energy consumption and thus lifetime Correction, Reliability, Network Protocol, Low Power Comsumption I. INTRODUCTION Error detection using Cyclic of retransmitting the whole packet - improves energy consumption and thus lifetime of wireless sensor networks

  7. A Spline Algorithm for Modeling Cutting Errors Turning Centers

    E-Print Network [OSTI]

    Gilsinn, David E.

    . Bandy Automated Production Technology Division National Institute of Standards and Technology 100 Bureau are made up of features with profiles defined by arcs and lines. An error model for turned parts must take. In the case where there is a requirement of tangency between two features, such as a line tangent to an arc

  8. Tonopah Test Range capabilities: technical manual

    SciTech Connect (OSTI)

    Manhart, R.L.

    1982-11-01

    This manual describes Tonopah Test Range (TTR), defines its testing capabilities, and outlines the steps necessary to schedule tests on the Range. Operated by Sandia National Laboratories, TTR is a major test facility for DOE-funded weapon programs. The Range presents an integrated system for ballistic test vehicle tracking and data acquisition. Multiple radars, optical trackers, telemetry stations, a central computer complex, and combined landline/RF communications systems assure full Range coverage for any type of test. Range operations are conducted by a department within Sandia's Field Engineering Directorate. While the overall Range functions as a complete system, it is operationally divided into the Test Measurements, Instrumentation Development, and Range Operations divisions. The primary function of TTR is to support DOE weapons test activities. Management, however, encourages other Government agencies and their contractors to schedule tests on the Range which can make effective use of its capabilities. Information concerning Range use by organizations outside of DOE is presented. Range instrumentation and support facilities are described in detail. This equipment represents the current state-of-the-art and reflects a continuing commitment by TTR management to field the most effective tracking and data acquisition system available.

  9. Interpretation of ensembles created by multiple iterative rebuilding of macromolecular models

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545 (United States); Grosse-Kunstleve, Ralf W.; Afonine, Pavel V.; Adams, Paul D.; Moriarty, Nigel W.; Zwart, Peter [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Read, Randy J. [Department of Haematology, University of Cambridge, Cambridge CB2 0XY (United Kingdom); Turk, Dusan [Jozef Stefan Institute, Jamova 39, 1000 Ljubljana (Slovenia); Hung, Li-Wei [Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545 (United States)

    2007-05-01

    Heterogeneity in ensembles generated by independent model rebuilding principally reflects the limitations of the data and of the model-building process rather than the diversity of structures in the crystal. Automation of iterative model building, density modification and refinement in macromolecular crystallography has made it feasible to carry out this entire process multiple times. By using different random seeds in the process, a number of different models compatible with experimental data can be created. Sets of models were generated in this way using real data for ten protein structures from the Protein Data Bank and using synthetic data generated at various resolutions. Most of the heterogeneity among models produced in this way is in the side chains and loops on the protein surface. Possible interpretations of the variation among models created by repetitive rebuilding were investigated. Synthetic data were created in which a crystal structure was modelled as the average of a set of ‘perfect’ structures and the range of models obtained by rebuilding a single starting model was examined. The standard deviations of coordinates in models obtained by repetitive rebuilding at high resolution are small, while those obtained for the same synthetic crystal structure at low resolution are large, so that the diversity within a group of models cannot generally be a quantitative reflection of the actual structures in a crystal. Instead, the group of structures obtained by repetitive rebuilding reflects the precision of the models, and the standard deviation of coordinates of these structures is a lower bound estimate of the uncertainty in coordinates of the individual models.

  10. iSchool Website: Creating & Changing Content J. Cox/N. Singh June 1, 2011 iSchool Website: Creating & Changing Content

    E-Print Network [OSTI]

    Toronto, University of

    iSchool Website: Creating & Changing Content ­ J. Cox/N. Singh June 1, 2011 iSchool Website their profiles. Contact nalini.singh@utoronto.ca C. Blogs Creators maintain their own blogs. WebSchool Website: Creating & Changing Content ­ J. Cox/N. Singh June 1, 2011 2. Creator creates content after

  11. Method for creating high carbon content products from biomass oil

    DOE Patents [OSTI]

    Parker, Reginald; Seames, Wayne

    2012-12-18

    In a method for producing high carbon content products from biomass, a biomass oil is added to a cracking reactor vessel. The biomass oil is heated to a temperature ranging from about 100.degree. C. to about 800.degree. C. at a pressure ranging from about vacuum conditions to about 20,700 kPa for a time sufficient to crack the biomass oil. Tar is separated from the cracked biomass oil. The tar is heated to a temperature ranging from about 200.degree. C. to about 1500.degree. C. at a pressure ranging from about vacuum conditions to about 20,700 kPa for a time sufficient to reduce the tar to a high carbon content product containing at least about 50% carbon by weight.

  12. Researchers create enormous simulation of proton collisions | Argonne

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100National Laboratory Researchers create enormous simulation of proton

  13. Workers Create Demolition Zone at Hanford Site's Plutonium Finishing

    Office of Environmental Management (EM)

    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 GasAdjustmentsShirley Ann Jackson About1996HowFOAShowingFuelWeatherize »EvePlant | Department of Energy Create

  14. ARI: Creating a 2020 DOE | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12 Beta-3 Racetracks25CommunicationAPBF Effects onARI: Creating a

  15. Agencies Move Closer to Creating Manhattan Project National Park |

    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 GasAdjustmentsShirley Ann JacksonDepartment of EnergyResearchers atDay 12:was createdNobel ISOWHO WEabove

  16. SciTech Connect: Create a New Account

    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 Home RoomPreservation ofAlbuquerque| Stanford SynchrotronVideo-Contest Sign In About |Create a New

  17. Sandia Energy - Diamond Plates Create Nanostructures through Pressure,

    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 Home RoomPreservation of Fe(II) byMultidayAlumniProjectsCyberNot Chemistry Diamond Plates Create

  18. Exploiting Photo-induced Reactions in Polymer Blends to Create Hierarchically Ordered, Defect-free Materials

    ScienceCinema (OSTI)

    Balazs, Anna [University of Pittsburgh, Pittsburgh, Pennsylvania, United States

    2010-01-08

    Computer simulations reveal how photo-induced chemical reactions can be exploited to create long-range order in binary and ternary polymeric materials. The process is initiated by shining a spatially uniform light over a photosensitive AB binary blend, which undergoes both a reversible chemical reaction and phase separation. We then introduce a well-collimated, higher-intensity light source. Rastering this secondary light over the sample locally increases the reaction rate and causes formation of defect-free, spatially periodic structures. These binary structures resemble either the lamellar or hexagonal phases of microphase-separated di-block copolymers. We measure the regularity of the ordered structures as a function of the relative reaction rates for different values of the rastering speed and determine the optimal conditions for creating defect-free structures in the binary systems. We then add a non-reactive homo-polymer C, which is immiscible with both A and B. We show that this component migrates to regions that are illuminated by the secondary, higher-intensity light, allowing us to effectively write a pattern of C onto the AB film. Rastering over the ternary blend with this collimated light now leads to hierarchically ordered patterns of A, B, and C. The findings point to a facile, non-intrusive process for manufacturing high-quality polymeric devices in a low-cost, efficient manner.

  19. Failure Modes of Vacuum Plasma Spray Tungsten Coating Created on Carbon Fibre Composites under Thermal Loads

    E-Print Network [OSTI]

    Failure Modes of Vacuum Plasma Spray Tungsten Coating Created on Carbon Fibre Composites under Thermal Loads

  20. Range Design Criteria- June 4, 2012

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document contains the currently-approved firearms "Range Design Criteria" referred to on DOE O 473.3, Protection Program Operations

  1. EM Tackles Cleanup at Tonopah Test Range

    Broader source: Energy.gov [DOE]

    NEVADA – Environmental cleanup experts spent the last weeks of summer on the Tonopah Test Range addressing contaminated equipment and debris at two historical nuclear testing locations.

  2. Formulating and Implementing Profiling over Adaptive Ranges

    E-Print Network [OSTI]

    Sherwood, Tim

    be implemented for range-adaptive profiling. RAP can be used on various profiles, such as PCs, load values may easily be lost in a sea of data. We present range-adaptive profiling (RAP) as a new and general value locality. We propose two methods of implementation of RAP, one in software and the other

  3. Range gated imaging experiments using gated intensifiers

    SciTech Connect (OSTI)

    McDonald, T.E. Jr.; Yates, G.J.; Cverna, F.H.; Gallegos, R.A.; Jaramillo, S.A.; Numkena, D.M.; Payton, J.; Pena-Abeyta, C.R.

    1999-03-01

    A variety of range gated imaging experiments using high-speed gated/shuttered proximity focused microchannel plate image intensifiers (MCPII) are reported. Range gated imaging experiments were conducted in water for detection of submerged mines in controlled turbidity tank test and in sea water for the Naval Coastal Sea Command/US Marine Corps. Field experiments have been conducted consisting of kilometer range imaging of resolution targets and military vehicles in atmosphere at Eglin Air Force Base for the US Air Force, and similar imaging experiments, but in smoke environment, at Redstone Arsenal for the US Army Aviation and Missile Command (AMCOM). Wavelength of the illuminating laser was 532 nm with pulse width ranging from 6 to 12 ns and comparable gate widths. These tests have shown depth resolution in the tens of centimeters range from time phasing reflected LADAR images with MCPII shutter opening.

  4. Effective range from tetramer dissociation data

    E-Print Network [OSTI]

    Hadizadeh, M R; Tomio, Lauro; Delfino, A; Frederico, T

    2012-01-01

    The shifts in the four-body recombination peaks, due to lowest order range corrections in the zero range results close to the unitary limit, are obtained and used to extract the corresponding effective range of a given atomic system. From the experimental values of the tetramer dissociation positions of an ultracold gas of cesium atoms close to broad Feshbach resonances, the effective ranges are extracted, with a weighted average given by 3.9$\\pm 0.8 R_{{vdW}}$, where $R_{{vdW}}$ is the van der Waals length scale. This result is consistent with the van der Waals potential tail for the $Cs_2$ system. The method can be generally applied to other cold atom experimental setups to determine the corresponding effective range.

  5. A comparison of techniques for simulating set-up error and uncertainty in head and neck IMRT

    SciTech Connect (OSTI)

    Ploquin, Nicolas; Kay, Ian; Rangel-Baltazar, Alejandra; Lau, Harold; Dunscombe, Peter [Tom Baker Cancer Centre, Department of Medical Physics, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada) and University of Calgary, Department of Physics and Astronomy, 2500 University Drive, Calgary, Alberta, T2N 1N4 (Canada); Tom Baker Cancer Centre, Department of Medical Physics, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada) and University of Calgary, Department of Physics and Astronomy, 2500 University Drive, Calgary, Alberta, T2N 1N4 (Canada) and University of Calgary, Department of Oncology, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada); Tom Baker Cancer Centre, Department of Medical Physics, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada) and University of Calgary, Department of Physics and Astronomy, 2500 University Drive, Calgary, Alberta, T2N 1N4 (Canada); Tom Baker Cancer Centre, Department of Radiation Oncology, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada) and University of Calgary, Department of Oncology, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada); Tom Baker Cancer Centre, Department of Medical Physics, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada) and University of Calgary, Department of Physics and Astronomy, 2500 University Drive, Calgary, Alberta, T2N 1N4 (Canada) and University of Calgary, Department of Oncology, 1331-29 Street NW, Calgary, Alberta, T2N 4N2 (Canada)

    2006-09-15

    We have compared four computational methods for quantifying the effect of set-up error and uncertainty on delivered doses to targets and organs at risk in the intensity modulated radiation therapy treatment of head and neck cancer. These four methods were direct simulation, simple convolution, plus two modified convolution approaches. Discrepancies of up to 20% in the equivalent uniform dose (EUD) between direct simulation and simple convolution were estimated for the relatively superficial parotid gland at a systematic set-up error of 6 mm standard deviation and a random uncertainty of 2 mm standard deviation. Truncated convolution agreed with direct simulation to within 6% for all situations studied. However, of the four methods, only direct simulation can quantify the range of outcomes (EUD) associated with a finite number of courses and fractions. Our results are particularly relevant to the design of dose escalation studies in head and neck cancer.

  6. On the Fourier Transform Approach to Quantum Error Control

    E-Print Network [OSTI]

    Hari Dilip Kumar

    2012-08-24

    Quantum codes are subspaces of the state space of a quantum system that are used to protect quantum information. Some common classes of quantum codes are stabilizer (or additive) codes, non-stabilizer (or non-additive) codes obtained from stabilizer codes, and Clifford codes. These are analyzed in a framework using the Fourier transform on finite groups, the finite group in question being a subgroup of the quantum error group considered. All the classes of codes that can be obtained in this framework are explored, including codes more general than Clifford codes. The error detection properties of one of these more general classes ("direct sums of translates of Clifford codes") are characterized. Examples codes are constructed, and computer code search results presented and analysed.

  7. Comparison of Wind Power and Load Forecasting Error Distributions: Preprint

    SciTech Connect (OSTI)

    Hodge, B. M.; Florita, A.; Orwig, K.; Lew, D.; Milligan, M.

    2012-07-01

    The introduction of large amounts of variable and uncertain power sources, such as wind power, into the electricity grid presents a number of challenges for system operations. One issue involves the uncertainty associated with scheduling power that wind will supply in future timeframes. However, this is not an entirely new challenge; load is also variable and uncertain, and is strongly influenced by weather patterns. In this work we make a comparison between the day-ahead forecasting errors encountered in wind power forecasting and load forecasting. The study examines the distribution of errors from operational forecasting systems in two different Independent System Operator (ISO) regions for both wind power and load forecasts at the day-ahead timeframe. The day-ahead timescale is critical in power system operations because it serves the unit commitment function for slow-starting conventional generators.

  8. Method and system for reducing errors in vehicle weighing systems

    DOE Patents [OSTI]

    Hively, Lee M. (Philadelphia, TN); Abercrombie, Robert K. (Knoxville, TN)

    2010-08-24

    A method and system (10, 23) for determining vehicle weight to a precision of <0.1%, uses a plurality of weight sensing elements (23), a computer (10) for reading in weighing data for a vehicle (25) and produces a dataset representing the total weight of a vehicle via programming (40-53) that is executable by the computer (10) for (a) providing a plurality of mode parameters that characterize each oscillatory mode in the data due to movement of the vehicle during weighing, (b) by determining the oscillatory mode at which there is a minimum error in the weighing data; (c) processing the weighing data to remove that dynamical oscillation from the weighing data; and (d) repeating steps (a)-(c) until the error in the set of weighing data is <0.1% in the vehicle weight.

  9. Sandia National Laboratories, California proposed CREATE facility environmental baseline survey.

    SciTech Connect (OSTI)

    Catechis, Christopher Spyros

    2013-10-01

    Sandia National Laboratories, Environmental Programs completed an environmental baseline survey (EBS) of 12.6 acres located at Sandia National Laboratories/California (SNL/CA) in support of the proposed Collaboration in Research and Engineering for Advanced Technology and Education (CREATE) Facility. The survey area is comprised of several parcels of land within SNL/CA, County of Alameda, California. The survey area is located within T 3S, R 2E, Section 13. The purpose of this EBS is to document the nature, magnitude, and extent of any environmental contamination of the property; identify potential environmental contamination liabilities associated with the property; develop sufficient information to assess the health and safety risks; and ensure adequate protection for human health and the environment related to a specific property.

  10. The thermodynamics of creating correlations: Limitations and optimal protocols

    E-Print Network [OSTI]

    David Edward Bruschi; Martí Perarnau-Llobet; Nicolai Friis; Karen V. Hovhannisyan; Marcus Huber

    2015-03-11

    We establish a rigorous connection between fundamental resource theories at the quantum scale. Correlations and entanglement constitute indispensable resources for numerous quantum information tasks. However, their establishment comes at the cost of energy, the resource of thermodynamics, and is limited by the initial entropy. Here, the optimal conversion of energy into correlations is investigated. Assuming the presence of a thermal bath, we establish general bounds for arbitrary systems and construct a protocol saturating them. The amount of correlations, quantified by the mutual information, can increase at most linearly with the available energy, and we determine where the linear regime breaks down. We further consider the generation of genuine quantum correlations, focusing on the fundamental constituents of our universe: fermions and bosons. For fermionic modes, we find the optimal entangling protocol. For bosonic modes, we show that while Gaussian operations can be outperformed in creating entanglement, their performance is optimal for high energies.

  11. SU-E-T-170: Evaluation of Rotational Errors in Proton Therapy Planning of Lung Cancer

    SciTech Connect (OSTI)

    Rana, S; Zhao, L; Ramirez, E; Singh, H; Zheng, Y

    2014-06-01

    Purpose: To investigate the impact of rotational (roll, yaw, and pitch) errors in proton therapy planning of lung cancer. Methods: A lung cancer case treated at our center was used in this retrospective study. The original plan was generated using two proton fields (posterior-anterior and left-lateral) with XiO treatment planning system (TPS) and delivered using uniform scanning proton therapy system. First, the computed tomography (CT) set of original lung treatment plan was re-sampled for rotational (roll, yaw, and pitch) angles ranged from ?5° to +5°, with an increment of 2.5°. Second, 12 new proton plans were generated in XiO using the 12 re-sampled CT datasets. The same beam conditions, isocenter, and devices were used in new treatment plans as in the original plan. All 12 new proton plans were compared with original plan for planning target volume (PTV) coverage and maximum dose to spinal cord (cord Dmax). Results: PTV coverage was reduced in all 12 new proton plans when compared to that of original plan. Specifically, PTV coverage was reduced by 0.03% to 1.22% for roll, by 0.05% to 1.14% for yaw, and by 0.10% to 3.22% for pitch errors. In comparison to original plan, the cord Dmax in new proton plans was reduced by 8.21% to 25.81% for +2.5° to +5° pitch, by 5.28% to 20.71% for +2.5° to +5° yaw, and by 5.28% to 14.47% for ?2.5° to ?5° roll. In contrast, cord Dmax was increased by 3.80% to 3.86% for ?2.5° to ?5° pitch, by 0.63% to 3.25% for ?2.5° to ?5° yaw, and by 3.75% to 4.54% for +2.5° to +5° roll. Conclusion: PTV coverage was reduced by up to 3.22% for rotational error of 5°. The cord Dmax could increase or decrease depending on the direction of rotational error, beam angles, and the location of lung tumor.

  12. Runtime Detection of C-Style Errors in UPC Code

    SciTech Connect (OSTI)

    Pirkelbauer, P; Liao, C; Panas, T; Quinlan, D

    2011-09-29

    Unified Parallel C (UPC) extends the C programming language (ISO C 99) with explicit parallel programming support for the partitioned global address space (PGAS), which provides a global memory space with localized partitions to each thread. Like its ancestor C, UPC is a low-level language that emphasizes code efficiency over safety. The absence of dynamic (and static) safety checks allows programmer oversights and software flaws that can be hard to spot. In this paper, we present an extension of a dynamic analysis tool, ROSE-Code Instrumentation and Runtime Monitor (ROSECIRM), for UPC to help programmers find C-style errors involving the global address space. Built on top of the ROSE source-to-source compiler infrastructure, the tool instruments source files with code that monitors operations and keeps track of changes to the system state. The resulting code is linked to a runtime monitor that observes the program execution and finds software defects. We describe the extensions to ROSE-CIRM that were necessary to support UPC. We discuss complications that arise from parallel code and our solutions. We test ROSE-CIRM against a runtime error detection test suite, and present performance results obtained from running error-free codes. ROSE-CIRM is released as part of the ROSE compiler under a BSD-style open source license.

  13. On the efficiency of nondegenerate quantum error correction codes for Pauli channels

    E-Print Network [OSTI]

    Gunnar Bjork; Jonas Almlof; Isabel Sainz

    2009-05-19

    We examine the efficiency of pure, nondegenerate quantum-error correction-codes for Pauli channels. Specifically, we investigate if correction of multiple errors in a block is more efficient than using a code that only corrects one error per block. Block coding with multiple-error correction cannot increase the efficiency when the qubit error-probability is below a certain value and the code size fixed. More surprisingly, existing multiple-error correction codes with a code length equal or less than 256 qubits have lower efficiency than the optimal single-error correcting codes for any value of the qubit error-probability. We also investigate how efficient various proposed nondegenerate single-error correcting codes are compared to the limit set by the code redundancy and by the necessary conditions for hypothetically existing nondegenerate codes. We find that existing codes are close to optimal.

  14. Neutron scattering and extra short range interactions

    E-Print Network [OSTI]

    V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

    2007-11-14

    The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

  15. Techniques for optically compressing light intensity ranges

    SciTech Connect (OSTI)

    Rushford, Michael C.

    1989-01-01

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.

  16. Techniques for optically compressing light intensity ranges

    DOE Patents [OSTI]

    Rushford, M.C.

    1989-03-28

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

  17. Long-range coupling and scalable architecture for superconducting flux qubits

    E-Print Network [OSTI]

    Austin G. Fowler; William F. Thompson; Zhizhong Yan; Ashley M. Stephens; B. L. T. Plourde; Frank K. Wilhelm

    2007-04-21

    Constructing a fault-tolerant quantum computer is a daunting task. Given any design, it is possible to determine the maximum error rate of each type of component that can be tolerated while still permitting arbitrarily large-scale quantum computation. It is an underappreciated fact that including an appropriately designed mechanism enabling long-range qubit coupling or transport substantially increases the maximum tolerable error rates of all components. With this thought in mind, we take the superconducting flux qubit coupling mechanism described in PRB 70, 140501 (2004) and extend it to allow approximately 500 MHz coupling of square flux qubits, 50 um a side, at a distance of up to several mm. This mechanism is then used as the basis of two scalable architectures for flux qubits taking into account crosstalk and fault-tolerant considerations such as permitting a universal set of logical gates, parallelism, measurement and initialization, and data mobility.

  18. Creating Tuneable Microwave Media from a 2D Lattice of Re-entrant Posts

    E-Print Network [OSTI]

    Maxim Goryachev; Michael E. Tobar

    2015-09-02

    The potential capability of resonators based on two dimensional arrays of re-entrant posts (or 3D split-rings) is demonstrated. Each posts may be regarded as a lumped element microwave harmonic oscillator, arranged in a 2D lattice of magnetically coupled $LC$-circuits and enclosed in a 3D cavity. By arranging these elements in certain patterns, one can achieve certain requirements with respect to the field localisation and the device spectra, creating a discrete mode spectrum. Special attention is paid to symmetries of the lattices, mechanical tuning, design of the spots of high localisation of magnetic energy and the given the mode spectrum. The described cavity platform has a wide range of applications requiring high versatility of the design, localisation and high energy density of the electrical or magnetic fields and wide tuning range. Applications to optomechanical systems and quantum memory are considered. Finally, we propose a generalised approach to a microwave system design based on the concept of Programmable Cavity Arrays.

  19. Weapons of Mass Destruction Technology Evaluation and Training Range

    SciTech Connect (OSTI)

    Kevin Larry Young

    2009-05-01

    The Idaho National Laboratory (INL) has a long history for providing technology evaluation and training for military and other federal level Weapons of Mass Destruction (WMD) response agencies. Currently there are many federal organizations and commercial companies developing technologies related to detecting, assessing, mitigating and protecting against hazards associated with a WMD event. Unfortunately, very few locations exist within the United States where WMD response technologies are realistically field tested and evaluated using real chemical, biological, radiological, nuclear and explosive materials. This is particularly true with biological and radiological hazards. Related to this lack of adequate WMD, multi-hazard technology testing capability is the shortage of locations where WMD response teams can train using actual chemical, biological, and radiological material or highly realistic simulates. In response to these technology evaluation and training needs, the INL has assembled a consortium of subject matter experts from existing programs and identified dedicated resources for the purpose of establishing an all-hazards, WMD technology evaluation and training range. The author describes the challenges associated with creating the all-hazards WMD technology evaluation and training range and lists the technical, logistical and financial benefits of an all-hazards technology evaluation and training range. Current resources and capabilities for conducting all-hazard technology evaluation and training at the INL are identified. Existing technology evaluation and training programs at the INL related to radiological, biological and chemical hazards are highlighted, including successes and lessons learned. Finally, remaining gaps in WMD technology evaluation and training capabilities are identified along with recommendations for closing those gaps.

  20. Laser Range Finder Mapping of Floating Vehicle

    E-Print Network [OSTI]

    Hui, Corinna

    2009-01-01

    Using laser range finders as a method of navigation is popular with mobile land robots; however, there has been little research using it with water vehicles. Therefore, this thesis explores the usage and data flow of a ...

  1. Long range transport of acid rain precursors

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    A model of the long range transport of primary and secondary pollutants derived by Fay and Rosenzweig (1) is applied to the problem of the transport of acid rain precursors. The model describes the long term average (annual ...

  2. Tracking Dynamic Boundary Fronts Using Range Sensors

    E-Print Network [OSTI]

    Ramamritham, Krithi

    , tracking forest fires and environmental phenomena. Consider a poisonous gas or plume monitoring ap De- tection and Ranging) are being used for detecting forest fires [6], [7] in the last few years

  3. Long range interactions in nanoscale science

    E-Print Network [OSTI]

    Rajter, Richard F.

    Our understanding of the “long range” electrodynamic, electrostatic, and polar interactions that dominate the organization of small objects at separations beyond an interatomic bond length is reviewed. From this basic-forces ...

  4. Underwater vehicle localization using range measurements

    E-Print Network [OSTI]

    Papadopoulos, Ge?rgios

    2010-01-01

    This thesis investigates the problem of cooperative navigation of autonomous marine vehicles using range-only acoustic measurements. We consider the use of a single maneuvering autonomous surface vehicle (ASV) to aid the ...

  5. Active dendrites enhance neuronal dynamic range

    E-Print Network [OSTI]

    Leonardo L. Gollo; Osame Kinouchi; Mauro Copelli

    2009-08-08

    Since the first experimental evidences of active conductances in dendrites, most neurons have been shown to exhibit dendritic excitability through the expression of a variety of voltage-gated ion channels. However, despite experimental and theoretical efforts undertaken in the last decades, the role of this excitability for some kind of dendritic computation has remained elusive. Here we show that, owing to very general properties of excitable media, the average output of a model of active dendritic trees is a highly non-linear function of their afferent rate, attaining extremely large dynamic ranges (above 50 dB). Moreover, the model yields double-sigmoid response functions as experimentally observed in retinal ganglion cells. We claim that enhancement of dynamic range is the primary functional role of active dendritic conductances. We predict that neurons with larger dendritic trees should have larger dynamic range and that blocking of active conductances should lead to a decrease of dynamic range.

  6. Programmable near-infrared ranging system

    DOE Patents [OSTI]

    Everett, Jr., Hobart R. (San Diego, CA)

    1989-01-01

    A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.

  7. Waveform Synthesizer For Imaging And Ranging Applications

    DOE Patents [OSTI]

    Dubbert, Dale F. (Cedar Crest, NM); Dudley, Peter A. (Albuquerque, NM); Doerry, Armin W. (Albuquerque, NM); Tise, Bertice L. (Albuquerque, NM)

    2004-12-28

    Frequency dependent corrections are provided for Local Oscillator (LO) feed-through. An operational procedure filters LO feed-through effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver, unwanted energies, such as LO feed-through energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of LO feed-through can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.

  8. Waveform Synthesizer For Imaging And Ranging Applications

    DOE Patents [OSTI]

    DUDLEY, PETER A.; [et al

    2004-11-30

    Frequency dependent corrections are provided for quadrature imbalance. An operational procedure filters imbalance effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver; unwanted energies, such as imbalance energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of quadrature imbalance can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.

  9. Nuclear mass systematics by complementing the Finite Range Droplet Model with neural networks

    E-Print Network [OSTI]

    S. Athanassopoulos; E. Mavrommatis; K. A. Gernoth; J. W. Clark

    2005-11-30

    A neural-network model is developed to reproduce the differences between experimental nuclear mass-excess values and the theoretical values given by the Finite Range Droplet Model. The results point to the existence of subtle regularities of nuclear structure not yet contained in the best microscopic/phenomenological models of atomic masses. Combining the FRDM and the neural-network model, we create a hybrid model with improved predictive performance on nuclear-mass systematics and related quantities.

  10. Partnership Helps Alleviate Electric Vehicle Range Anxiety (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-04-01

    NREL, Clean Cities, and industry leaders join forces to create the first comprehensive online locator for electric vehicle charging stations.

  11. Energy efficiency in nonprofit agencies: Creating effective program models

    SciTech Connect (OSTI)

    Brown, M.A.; Prindle, B.; Scherr, M.I.; White, D.L.

    1990-08-01

    Nonprofit agencies are a critical component of the health and human services system in the US. It has been clearly demonstrated by programs that offer energy efficiency services to nonprofits that, with minimal investment, they can educe their energy consumption by ten to thirty percent. This energy conservation potential motivated the Department of Energy and Oak Ridge National Laboratory to conceive a project to help states develop energy efficiency programs for nonprofits. The purpose of the project was two-fold: (1) to analyze existing programs to determine which design and delivery mechanisms are particularly effective, and (2) to create model programs for states to follow in tailoring their own plans for helping nonprofits with energy efficiency programs. Twelve existing programs were reviewed, and three model programs were devised and put into operation. The model programs provide various forms of financial assistance to nonprofits and serve as a source of information on energy efficiency as well. After examining the results from the model programs (which are still on-going) and from the existing programs, several replicability factors'' were developed for use in the implementation of programs by other states. These factors -- some concrete and practical, others more generalized -- serve as guidelines for states devising program based on their own particular needs and resources.

  12. Using Machine Learning to Create Turbine Performance Models (Presentation)

    SciTech Connect (OSTI)

    Clifton, A.

    2013-04-01

    Wind turbine power output is known to be a strong function of wind speed, but is also affected by turbulence and shear. In this work, new aerostructural simulations of a generic 1.5 MW turbine are used to explore atmospheric influences on power output. Most significant is the hub height wind speed, followed by hub height turbulence intensity and then wind speed shear across the rotor disk. These simulation data are used to train regression trees that predict the turbine response for any combination of wind speed, turbulence intensity, and wind shear that might be expected at a turbine site. For a randomly selected atmospheric condition, the accuracy of the regression tree power predictions is three times higher than that of the traditional power curve methodology. The regression tree method can also be applied to turbine test data and used to predict turbine performance at a new site. No new data is required in comparison to the data that are usually collected for a wind resource assessment. Implementing the method requires turbine manufacturers to create a turbine regression tree model from test site data. Such an approach could significantly reduce bias in power predictions that arise because of different turbulence and shear at the new site, compared to the test site.

  13. Creating deformations and tunnels in a surface using layered geometry with adaptive filtering 

    E-Print Network [OSTI]

    Brooks, Jacob Kirk

    2005-11-01

    With this thesis, I present a method for creating footprints and tunnels in a surface through the use of layered geometry. Rather than using a single geometric surface, deformations are created through the interaction of a polygonal object...

  14. Solar Startup Semprius to Create 250 Jobs in North Carolina at...

    Office of Environmental Management (EM)

    Startup Semprius to Create 250 Jobs in North Carolina at Cutting-Edge Pilot Plant Solar Startup Semprius to Create 250 Jobs in North Carolina at Cutting-Edge Pilot Plant July 25,...

  15. New York Network Members Join Forces to Create Green Jobs | Department...

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

    York Network Members Join Forces to Create Green Jobs New York Network Members Join Forces to Create Green Jobs Photo of a group of five people standing, looking at the camera....

  16. A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM

    E-Print Network [OSTI]

    Nochetto, Ricardo H.

    A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM casting problem is a convection­dominated nonlinearly degenerate diffusion problem. It is discretized adaptive method. Keywords. a posteriori error estimates, continuous casting, method of characteristics

  17. Simulations of error in quantum adiabatic computations of random 2-SAT instances

    E-Print Network [OSTI]

    Gill, Jay S. (Jay Singh)

    2006-01-01

    This thesis presents a series of simulations of quantum computations using the adiabatic algorithm. The goal is to explore the effect of error, using a perturbative approach that models 1-local errors to the Hamiltonian ...

  18. Design techniques for graph-based error-correcting codes and their applications 

    E-Print Network [OSTI]

    Lan, Ching Fu

    2006-04-12

    -correcting (channel) coding. The main idea of error-correcting codes is to add redundancy to the information to be transmitted so that the receiver can explore the correlation between transmitted information and redundancy and correct or detect errors caused...

  19. The Impact of Soil Sampling Errors on Variable Rate Fertilization

    SciTech Connect (OSTI)

    R. L. Hoskinson; R C. Rope; L G. Blackwood; R D. Lee; R K. Fink

    2004-07-01

    Variable rate fertilization of an agricultural field is done taking into account spatial variability in the soil’s characteristics. Most often, spatial variability in the soil’s fertility is the primary characteristic used to determine the differences in fertilizers applied from one point to the next. For several years the Idaho National Engineering and Environmental Laboratory (INEEL) has been developing a Decision Support System for Agriculture (DSS4Ag) to determine the economically optimum recipe of various fertilizers to apply at each site in a field, based on existing soil fertility at the site, predicted yield of the crop that would result (and a predicted harvest-time market price), and the current costs and compositions of the fertilizers to be applied. Typically, soil is sampled at selected points within a field, the soil samples are analyzed in a lab, and the lab-measured soil fertility of the point samples is used for spatial interpolation, in some statistical manner, to determine the soil fertility at all other points in the field. Then a decision tool determines the fertilizers to apply at each point. Our research was conducted to measure the impact on the variable rate fertilization recipe caused by variability in the measurement of the soil’s fertility at the sampling points. The variability could be laboratory analytical errors or errors from variation in the sample collection method. The results show that for many of the fertility parameters, laboratory measurement error variance exceeds the estimated variability of the fertility measure across grid locations. These errors resulted in DSS4Ag fertilizer recipe recommended application rates that differed by up to 138 pounds of urea per acre, with half the field differing by more than 57 pounds of urea per acre. For potash the difference in application rate was up to 895 pounds per acre and over half the field differed by more than 242 pounds of potash per acre. Urea and potash differences accounted for almost 87% of the cost difference. The sum of these differences could result in a $34 per acre cost difference for the fertilization. Because of these differences, better analysis or better sampling methods may need to be done, or more samples collected, to ensure that the soil measurements are truly representative of the field’s spatial variability.

  20. Error-field penetration in reversed magnetic shear configurations

    SciTech Connect (OSTI)

    Wang, H. H.; Wang, Z. X.; Wang, X. Q. [MOE Key Laboratory of Materials Modification by Beams of the Ministry of Education, School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China)] [MOE Key Laboratory of Materials Modification by Beams of the Ministry of Education, School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); Wang, X. G. [School of Physics, Peking University, Beijing 100871 (China)] [School of Physics, Peking University, Beijing 100871 (China)

    2013-06-15

    Error-field penetration in reversed magnetic shear (RMS) configurations is numerically investigated by using a two-dimensional resistive magnetohydrodynamic model in slab geometry. To explore different dynamic processes in locked modes, three equilibrium states are adopted. Stable, marginal, and unstable current profiles for double tearing modes are designed by varying the current intensity between two resonant surfaces separated by a certain distance. Further, the dynamic characteristics of locked modes in the three RMS states are identified, and the relevant physics mechanisms are elucidated. The scaling behavior of critical perturbation value with initial plasma velocity is numerically obtained, which obeys previously established relevant analytical theory in the viscoresistive regime.

  1. Error 401 on upload? | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto Electric Coop,Erosion Flume Jump to: navigation, search BasicError

  2. A statistical analysis of systematic errors in temperature and ram velocity estimates from satellite-borne retarding potential analyzers

    SciTech Connect (OSTI)

    Klenzing, J. H.; Earle, G. D.; Heelis, R. A.; Coley, W. R. [William B. Hanson Center for Space Sciences, University of Texas at Dallas, 800 W. Campbell Rd. WT15, Richardson, Texas 75080 (United States)

    2009-05-15

    The use of biased grids as energy filters for charged particles is common in satellite-borne instruments such as a planar retarding potential analyzer (RPA). Planar RPAs are currently flown on missions such as the Communications/Navigation Outage Forecast System and the Defense Meteorological Satellites Program to obtain estimates of geophysical parameters including ion velocity and temperature. It has been shown previously that the use of biased grids in such instruments creates a nonuniform potential in the grid plane, which leads to inherent errors in the inferred parameters. A simulation of ion interactions with various configurations of biased grids has been developed using a commercial finite-element analysis software package. Using a statistical approach, the simulation calculates collected flux from Maxwellian ion distributions with three-dimensional drift relative to the instrument. Perturbations in the performance of flight instrumentation relative to expectations from the idealized RPA flux equation are discussed. Both single grid and dual-grid systems are modeled to investigate design considerations. Relative errors in the inferred parameters for each geometry are characterized as functions of ion temperature and drift velocity.

  3. Supersymmetric inversion of effective-range expansions

    E-Print Network [OSTI]

    Bikashkali Midya; Jérémie Evrard; Sylvain Abramowicz; O. L. Ramírez Suárez; Jean-Marc Sparenberg

    2015-05-26

    A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

  4. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Gong, Zhe-Xuan; Hu, Anzi; Wall, Michael L; Foss-Feig, Michael; Gorshkov, Alexey V

    2015-01-01

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  5. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Zhe-Xuan Gong; Mohammad F. Maghrebi; Anzi Hu; Michael L. Wall; Michael Foss-Feig; Alexey V. Gorshkov

    2015-05-12

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  6. Extended range radiation dose-rate monitor

    DOE Patents [OSTI]

    Valentine, Kenneth H. (Knoxville, TN)

    1988-01-01

    An extended range dose-rate monitor is provided which utilizes the pulse pileup phenomenon that occurs in conventional counting systems to alter the dynamic response of the system to extend the dose-rate counting range. The current pulses from a solid-state detector generated by radiation events are amplified and shaped prior to applying the pulses to the input of a comparator. The comparator generates one logic pulse for each input pulse which exceeds the comparator reference threshold. These pulses are integrated and applied to a meter calibrated to indicate the measured dose-rate in response to the integrator output. A portion of the output signal from the integrator is fed back to vary the comparator reference threshold in proportion to the output count rate to extend the sensitive dynamic detection range by delaying the asymptotic approach of the integrator output toward full scale as measured by the meter.

  7. Safety assessment of outdoor live fire range

    SciTech Connect (OSTI)

    1989-05-01

    The following Safety Assessment (SA) pertains to the outdoor live fire range facility (LFR). The purpose of this facility is to supplement the indoor LFR. In particular it provides capacity for exercises that would be inappropriate on the indoor range. This SA examines the risks that are attendant to the training on the outdoor LFR. The outdoor LFR used by EG&G Mound is privately owned. It is identified as the Miami Valley Shooting Grounds. Mondays are leased for the exclusive use of EG&G Mound.

  8. Created to Serve: Colorado State University's Impact on the State's Economy

    E-Print Network [OSTI]

    Created to Serve: Colorado State University's Impact on the State's Economy #12;2 Created to Serve: Created to Serve: Colorado State University's Impact on the State's Economy All data, research's Impact on the State's Economy Message from the President Colorado State, as a land-grant university

  9. Plasma parameter scaling of the error-field penetration threshold in tokamaks Richard Fitzpatrick

    E-Print Network [OSTI]

    Fitzpatrick, Richard

    Plasma parameter scaling of the error-field penetration threshold in tokamaks Richard Fitzpatrick of a rotating tokamak plasma to a resonant error-field Phys. Plasmas 21, 092513 (2014); 10.1063/1.4896244 A nonideal error-field response model for strongly shaped tokamak plasmas Phys. Plasmas 17, 112502 (2010); 10

  10. Matt Duckham Page 1 Implementing an object-oriented error sensitive GIS

    E-Print Network [OSTI]

    Duckham, Matt

    Matt Duckham Page 1 Implementing an object-oriented error sensitive GIS Matt Duckham Department in the handling of uncertainty within GIS, the production of what has been described as an error sensitive GIS of opportunities, but also impediments to the implemen- tation of such an error sensitive GIS. An important barrier

  11. Repeated quantum error correction on a continuously encoded qubit by real-time feedback

    E-Print Network [OSTI]

    Julia Cramer; Norbert Kalb; M. Adriaan Rol; Bas Hensen; Machiel S. Blok; Matthew Markham; Daniel J. Twitchen; Ronald Hanson; Tim H. Taminiau

    2015-08-06

    Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a logical quantum bit (qubit) in multiple physical qubits, so that errors can be detected without affecting the encoded state. To be compatible with universal fault-tolerant computations, it is essential that the states remain encoded at all times and that errors are actively corrected. Here we demonstrate such active error correction on a continuously protected qubit using a diamond quantum processor. We encode a logical qubit in three long-lived nuclear spins, repeatedly detect phase errors by non-destructive measurements using an ancilla electron spin, and apply corrections on the encoded state by real-time feedback. The actively error-corrected qubit is robust against errors and multiple rounds of error correction prevent errors from accumulating. Moreover, by correcting phase errors naturally induced by the environment, we demonstrate that encoded quantum superposition states are preserved beyond the dephasing time of the best physical qubit used in the encoding. These results establish a powerful platform for the fundamental investigation of error correction under different types of noise and mark an important step towards fault-tolerant quantum information processing.

  12. Simulating and Detecting Radiation-Induced Errors for Onboard Machine Learning

    E-Print Network [OSTI]

    Simulating and Detecting Radiation-Induced Errors for Onboard Machine Learning Robert Granat, Kiri-based fault tolerance (ABFT) methods into onboard data analysis algorithms to detect radiation-induced errors for detecting and recovering from such errors. A common hardware technique for achieving radiation protection

  13. Edit: Study -APP Save | Exit | Hide/Show Errors | Print... | Jump To

    E-Print Network [OSTI]

    Biederman, Irving

    Edit: Study - APP Save | Exit | Hide/Show Errors | Print... | Jump To: 01. Project Guidance Save | Exit | Hide/Show Errors | Print... | Jump To: 01. Project IdentificationStarDev/ResourceAdministration/Project/ProjectEditor?Project=com... 1 #12;Edit: Study - APP- Save | Exit | Hide/Show Errors | Print... | Jump To: 02. Study

  14. Error Correction on a Tree: An Instanton Approach V. Chernyak,1

    E-Print Network [OSTI]

    Stepanov, Misha

    or semianalytical estimating of the post-error correction bit error rate (BER) when a forward-error correction 630090, Russia 5 Department of Electrical Engineering, University of Arizona, Tucson, Arizona 85721, USA is utilized for transmitting information through a noisy channel. The generic method that applies to a variety

  15. Exposure Measurement Error in Time-Series Studies of Air Pollution: Concepts and Consequences

    E-Print Network [OSTI]

    Dominici, Francesca

    1 Exposure Measurement Error in Time-Series Studies of Air Pollution: Concepts and Consequences S in time-series studies 1 11/11/99 Keywords: measurement error, air pollution, time series, exposure of air pollution and health. Because measurement error may have substantial implications for interpreting

  16. Recommended Practice: Creating Cyber Forensics Plans for Control Systems

    SciTech Connect (OSTI)

    Eric Cornelius; Mark Fabro

    2008-08-01

    Cyber forensics has been in the popular mainstream for some time, and has matured into an information-technology capability that is very common among modern information security programs. The goal of cyber forensics is to support the elements of troubleshooting, monitoring, recovery, and the protection of sensitive data. Moreover, in the event of a crime being committed, cyber forensics is also the approach to collecting, analyzing, and archiving data as evidence in a court of law. Although scalable to many information technology domains, especially modern corporate architectures, cyber forensics can be challenging when being applied to non-traditional environments, which are not comprised of current information technologies or are designed with technologies that do not provide adequate data storage or audit capabilities. In addition, further complexity is introduced if the environments are designed using proprietary solutions and protocols, thus limiting the ease of which modern forensic methods can be utilized. The legacy nature and somewhat diverse or disparate component aspects of control systems environments can often prohibit the smooth translation of modern forensics analysis into the control systems domain. Compounded by a wide variety of proprietary technologies and protocols, as well as critical system technologies with no capability to store significant amounts of event information, the task of creating a ubiquitous and unified strategy for technical cyber forensics on a control systems device or computing resource is far from trivial. To date, no direction regarding cyber forensics as it relates to control systems has been produced other than what might be privately available from commercial vendors. Current materials have been designed to support event recreation (event-based), and although important, these requirements do not always satisfy the needs associated with incident response or forensics that are driven by cyber incidents. To address these issues and to accommodate for the diversity in both system and architecture types, a framework based in recommended practices to address forensics in the control systems domain is required. This framework must be fully flexible to allow for deployment into any control systems environment regardless of technologies used. Moreover, the framework and practices must provide for direction on the integration of modern network security technologies with traditionally closed systems, the result being a true defense-in-depth strategy for control systems architectures. This document takes the traditional concepts of cyber forensics and forensics engineering and provides direction regarding augmentation for control systems operational environments. The goal is to provide guidance to the reader with specifics relating to the complexity of cyber forensics for control systems, guidance to allow organizations to create a self-sustaining cyber forensics program, and guidance to support the maintenance and evolution of such programs. As the current control systems cyber security community of interest is without any specific direction on how to proceed with forensics in control systems environments, this information product is intended to be a first step.

  17. Examination of Hydrate Formation Methods: Trying to Create Representative Samples

    SciTech Connect (OSTI)

    Kneafsey, T.J.; Rees, E.V.L.; Nakagawa, S.; Kwon, T.-H.

    2011-04-01

    Forming representative gas hydrate-bearing laboratory samples is important so that the properties of these materials may be measured, while controlling the composition and other variables. Natural samples are rare, and have often experienced pressure and temperature changes that may affect the property to be measured [Waite et al., 2008]. Forming methane hydrate samples in the laboratory has been done a number of ways, each having advantages and disadvantages. The ice-to-hydrate method [Stern et al., 1996], contacts melting ice with methane at the appropriate pressure to form hydrate. The hydrate can then be crushed and mixed with mineral grains under controlled conditions, and then compacted to create laboratory samples of methane hydrate in a mineral medium. The hydrate in these samples will be part of the load-bearing frame of the medium. In the excess gas method [Handa and Stupin, 1992], water is distributed throughout a mineral medium (e.g. packed moist sand, drained sand, moistened silica gel, other porous media) and the mixture is brought to hydrate-stable conditions (chilled and pressurized with gas), allowing hydrate to form. This method typically produces grain-cementing hydrate from pendular water in sand [Waite et al., 2004]. In the dissolved gas method [Tohidi et al., 2002], water with sufficient dissolved guest molecules is brought to hydrate-stable conditions where hydrate forms. In the laboratory, this is can be done by pre-dissolving the gas of interest in water and then introducing it to the sample under the appropriate conditions. With this method, it is easier to form hydrate from more soluble gases such as carbon dioxide. It is thought that this method more closely simulates the way most natural gas hydrate has formed. Laboratory implementation, however, is difficult, and sample formation is prohibitively time consuming [Minagawa et al., 2005; Spangenberg and Kulenkampff, 2005]. In another version of this technique, a specified quantity of gas is placed in a sample, then the sample is flooded with water and cooled [Priest et al., 2009]. We have performed a number of tests in which hydrate was formed and the uniformity of the hydrate formation was examined. These tests have primarily used a variety of modifications of the excess gas method to make the hydrate, although we have also used a version of the excess water technique. Early on, we found difficulties in creating uniform samples with a particular sand/ initial water saturation combination (F-110 Sand, {approx} 35% initial water saturation). In many of our tests we selected this combination intentionally to determine whether we could use a method to make the samples uniform. The following methods were examined: Excess gas, Freeze/thaw/form, Freeze/pressurize/thaw, Excess gas followed by water saturation, Excess water, Sand and kaolinite, Use of a nucleation enhancer (SnoMax), and Use of salt in the water. Below, each method, the underlying hypothesis, and our results are briefly presented, followed by a brief conclusion. Many of the hypotheses investigated are not our own, but were presented to us. Much of the data presented is from x-ray CT scanning our samples. The x-ray CT scanner provides a three-dimensional density map of our samples. From this map and the physics that is occurring in our samples, we are able to gain an understanding of the spatial nature of the processes that occur, and attribute them to the locations where they occur.

  18. Impact of instrumental systematic errors on fine-structure constant measurements with quasar spectra

    E-Print Network [OSTI]

    J. B. Whitmore; M. T. Murphy

    2014-11-18

    We present a new `supercalibration' technique for measuring systematic distortions in the wavelength scales of high resolution spectrographs. By comparing spectra of `solar twin' stars or asteroids with a reference laboratory solar spectrum, distortions in the standard thorium--argon calibration can be tracked with $\\sim$10 m s$^{-1}$ precision over the entire optical wavelength range on scales of both echelle orders ($\\sim$50--100 \\AA) and entire spectrographs arms ($\\sim$1000--3000 \\AA). Using archival spectra from the past 20 years we have probed the supercalibration history of the VLT--UVES and Keck--HIRES spectrographs. We find that systematic errors in their wavelength scales are ubiquitous and substantial, with long-range distortions varying between typically $\\pm$200 m s$^{-1}$ per 1000 \\AA. We apply a simple model of these distortions to simulated spectra that characterize the large UVES and HIRES quasar samples which previously indicated possible evidence for cosmological variations in the fine-structure constant, $\\alpha$. The spurious deviations in $\\alpha$ produced by the model closely match important aspects of the VLT--UVES quasar results at all redshifts and partially explain the HIRES results, though not self-consistently at all redshifts. That is, the apparent ubiquity, size and general characteristics of the distortions are capable of significantly weakening the evidence for variations in $\\alpha$ from quasar absorption lines.

  19. Verification of unfold error estimates in the UFO code

    SciTech Connect (OSTI)

    Fehl, D.L.; Biggs, F.

    1996-07-01

    Spectral unfolding is an inverse mathematical operation which attempts to obtain spectral source information from a set of tabulated response functions and data measurements. Several unfold algorithms have appeared over the past 30 years; among them is the UFO (UnFold Operator) code. In addition to an unfolded spectrum, UFO also estimates the unfold uncertainty (error) induced by running the code in a Monte Carlo fashion with prescribed data distributions (Gaussian deviates). In the problem studied, data were simulated from an arbitrarily chosen blackbody spectrum (10 keV) and a set of overlapping response functions. The data were assumed to have an imprecision of 5% (standard deviation). 100 random data sets were generated. The built-in estimate of unfold uncertainty agreed with the Monte Carlo estimate to within the statistical resolution of this relatively small sample size (95% confidence level). A possible 10% bias between the two methods was unresolved. The Monte Carlo technique is also useful in underdetemined problems, for which the error matrix method does not apply. UFO has been applied to the diagnosis of low energy x rays emitted by Z-Pinch and ion-beam driven hohlraums.

  20. New insights on numerical error in symplectic integration

    E-Print Network [OSTI]

    Hugo Jiménez-Pérez; Jean-Pierre Vilotte; Barbara Romanowicz

    2015-08-13

    We implement and investigate the numerical properties of a new family of integrators connecting both variants of the symplectic Euler schemes, and including an alternative to the classical symplectic mid-point scheme, with some additional terms. This family is derived from a new method, introduced in a previous study, for generating symplectic integrators based on the concept of special symplectic manifold. The use of symplectic rotations and a particular type of projection keeps the whole procedure within the symplectic framework. We show that it is possible to define a set of parameters that control the additional terms providing a way of "tuning" these new symplectic schemes. We test the "tuned" symplectic integrators with the perturbed pendulum and we compare its behavior with an explicit scheme for perturbed systems. Remarkably, for the given examples, the error in the energy integral can be reduced considerably. There is a natural geometrical explanation, sketched at the end of this paper. This is the subject of a parallel article where a finer analysis is performed. Numerical results obtained in this paper open a new point of view on symplectic integrators and Hamiltonian error.

  1. Aperiodic dynamical decoupling sequences in presence of pulse errors

    E-Print Network [OSTI]

    Zhi-Hui Wang; V. V. Dobrovitski

    2011-01-12

    Dynamical decoupling (DD) is a promising tool for preserving the quantum states of qubits. However, small imperfections in the control pulses can seriously affect the fidelity of decoupling, and qualitatively change the evolution of the controlled system at long times. Using both analytical and numerical tools, we theoretically investigate the effect of the pulse errors accumulation for two aperiodic DD sequences, the Uhrig's DD UDD) protocol [G. S. Uhrig, Phys. Rev. Lett. {\\bf 98}, 100504 (2007)], and the Quadratic DD (QDD) protocol [J. R. West, B. H. Fong and D. A. Lidar, Phys. Rev. Lett {\\bf 104}, 130501 (2010)]. We consider the implementation of these sequences using the electron spins of phosphorus donors in silicon, where DD sequences are applied to suppress dephasing of the donor spins. The dependence of the decoupling fidelity on different initial states of the spins is the focus of our study. We investigate in detail the initial drop in the DD fidelity, and its long-term saturation. We also demonstrate that by applying the control pulses along different directions, the performance of QDD protocols can be noticeably improved, and explain the reason of such an improvement. Our results can be useful for future implementations of the aperiodic decoupling protocols, and for better understanding of the impact of errors on quantum control of spins.

  2. Range gating experiments through a scattering media

    SciTech Connect (OSTI)

    Payton, J.; Cverna, F.; Gallegos, R.; McDonald, T.; Numkena, D.; Obst, A.; Pena-Abeyta, C.; Yates, G.

    1998-12-31

    This paper discusses range-gated imaging experiments performed recently at Redstone Arsenal in Huntsville, Alabama. Range gating is an imaging technique that uses a pulsed laser and gated camera to image objects at specific ranges. The technique can be used for imaging through scattering media such as dense smoke or fog. Range gating uses the fact that light travels at 3 x 10{sup 8} m/s. Knowing the speed of light the authors can calculate the time it will take the laser light to travel a known distance, then gate open a Micro Channel Plate Image Intensifier (MCPII) at the time the reflected light returns from the target. In the Redstone experiment the gate width on the MCPII was set to equal the laser pulse width ({approximately} 8 ns) for the highest signal to noise ratio. The gate allows the light reflected form the target and a small portion of the light reflected from the smoke in the vicinity of the target to be imaged. They obtained good results in light and medium smoke but the laser they were used did not have sufficient intensity to penetrate the thickest smoke. They did not diverge the laser beam to cover the entire target in order to maintain a high flux that would achieve better penetration through the smoke. They were able to image an Armored Personnel Carrier (APC) through light and medium smoke but they were not able to image the APC through heavy smoke. The experiment and results are presented.

  3. Impulse radar with swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-09-08

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. The antennas can be arranged in a side-by-side parallel spaced apart configuration or in a coplanar opposed configuration which significantly reduces main bang coupling. 25 figs.

  4. 6, 1018310216, 2006 Long-range transport

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 6, 10183­10216, 2006 Long-range transport of Asian dust and air pollutants to Taiwan C.-Y. Lin and air pollutants to Taiwan: observed evidence and model simulation C.-Y. Lin 1 , Z. Wang 2 , W.-N. Chen and air pollutants to Taiwan C.-Y. Lin et al. Title Page Abstract Introduction Conclusions References

  5. Compact range for variable-zone measurements

    DOE Patents [OSTI]

    Burnside, Walter D. (Columbus, OH); Rudduck, Roger C. (Columbus, OH); Yu, Jiunn S. (Albuquerque, NM)

    1988-01-01

    A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector.

  6. Discussion of long-range weather prediction

    SciTech Connect (OSTI)

    Canavan, G.H.

    1998-09-10

    A group of scientists at Los Alamos have held a series of discussions of the issues in and prospects for improvements in Long-range Weather Predictions Enabled by Proving of the Atmosphere at High Space-Time Resolution. The group contained the requisite skills for a full evaluation, although this report presents only an informal discussion of the main technical issues. The group discussed all aspects of the proposal, which are grouped below into the headings: (1) predictability; (2) sensors and satellites, (3) DIAL and atmospheric sensing; (4) localized transponders; and (5) summary and integration. Briefly, the group agreed that the relative paucity of observations of the state of the atmosphere severely inhibits the accuracy of weather forecasts, and any program that leads to a more dense and uniform observational network is welcome. As shown in Long-range Weather more dense and uniform observational network is welcome. As shown in Long-range Weather Predictions, the pay-back of accurate long-range forecasts should more than justify the expenditure associated with improved observations and forecast models required. The essential step is to show that the needed technologies are available for field test and space qualification.

  7. Waveform synthesis for imaging and ranging applications

    DOE Patents [OSTI]

    Doerry, Armin W.; Dudley, Peter A.; Dubert, Dale F.; Tise, Bertice L.

    2004-12-07

    Frequency dependent corrections are provided for quadrature imbalance and Local Oscillator (LO) feed-through. An operational procedure filters imbalance and LO feed-through effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver; unwanted energies, such as LO feed-through and/or imbalance energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of LO feed-through and imbalance can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.

  8. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, E.A.; Fisher, W.G.

    1998-04-28

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time. 12 figs.

  9. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, Eric A. (138 Bay Path Dr., Oak Ridge, TN 37830); Fisher, Walter G. (8514 Carl Valentine, Knoxville, TN 37931)

    1998-01-01

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time.

  10. A global conformance quality model. A new strategic tool for minimizing defects caused by variation, error, and complexity

    SciTech Connect (OSTI)

    Hinckley, C.M.

    1994-01-01

    The performance of Japanese products in the marketplace points to the dominant role of quality in product competition. Our focus is motivated by the tremendous pressure to improve conformance quality by reducing defects to previously unimaginable limits in the range of 1 to 10 parts per million. Toward this end, we have developed a new model of conformance quality that addresses each of the three principle defect sources: (1) Variation, (2) Human Error, and (3) Complexity. Although the role of variation in conformance quality is well documented, errors occur so infrequently that their significance is not well known. We have shown that statistical methods are not useful in characterizing and controlling errors, the most common source of defects. Excessive complexity is also a root source of defects, since it increases errors and variation defects. A missing link in the defining a global model has been the lack of a sound correlation between complexity and defects. We have used Design for Assembly (DFA) methods to quantify assembly complexity and have shown that assembly times can be described in terms of the Pareto distribution in a clear exception to the Central Limit Theorem. Within individual companies we have found defects to be highly correlated with DFA measures of complexity in broad studies covering tens of millions of assembly operations. Applying the global concepts, we predicted that Motorola`s Six Sigma method would only reduce defects by roughly a factor of two rather than orders of magnitude, a prediction confirmed by Motorola`s data. We have also shown that the potential defects rates of product concepts can be compared in the earliest stages of development. The global Conformance Quality Model has demonstrated that the best strategy for improvement depends upon the quality control strengths and weaknesses.

  11. GREAT3 results - I. Systematic errors in shear estimation and the impact of real galaxy morphology

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

    Mandelbaum, Rachel; Rowe, Barnaby; Armstrong, Robert; Bard, Deborah; Bertin, Emmanuel; Bosch, James; Boutigny, Dominique; Courbin, Frederic; Dawson, William A.; Donnarumma, Annamaria; et al

    2015-05-11

    The study present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravitational lensing shear distortions from simulated galaxy images. GREAT3 was divided into experiments to test three specific questions, and included simulated space- and ground-based data with constant or cosmologically varying shear fields. The simplest (control) experiment included parametric galaxies with a realistic distribution of signal-to-noise, size, and ellipticity, and a complex point spread function (PSF). The other experiments tested the additional impact of realistic galaxy morphology, multiple exposure imaging, and the uncertainty aboutmore »a spatially varying PSF; the last two questions will be explored in Paper II. The 24 participating teams competed to estimate lensing shears to within systematic error tolerances for upcoming Stage-IV dark energy surveys, making 1525 submissions overall. GREAT3 saw considerable variety and innovation in the types of methods applied. Several teams now meet or exceed the targets in many of the tests conducted (to within the statistical errors). We conclude that the presence of realistic galaxy morphology in simulations changes shear calibration biases by ~1 per cent for a wide range of methods. Other effects such as truncation biases due to finite galaxy postage stamps, and the impact of galaxy type as measured by the Sérsic index, are quantified for the first time. Our results generalize previous studies regarding sensitivities to galaxy size and signal-to-noise, and to PSF properties such as seeing and defocus. Almost all methods’ results support the simple model in which additive shear biases depend linearly on PSF ellipticity.« less

  12. GREAT3 results - I. Systematic errors in shear estimation and the impact of real galaxy morphology

    SciTech Connect (OSTI)

    Mandelbaum, Rachel; Rowe, Barnaby; Armstrong, Robert; Bard, Deborah; Bertin, Emmanuel; Bosch, James; Boutigny, Dominique; Courbin, Frederic; Dawson, William A.; Donnarumma, Annamaria; Fenech Conti, Ian; Gavazzi, Raphael; Gentile, Marc; Gill, Mandeep S. S.; Hogg, David W.; Huff, Eric M.; Jee, M. James; Kacprzak, Tomasz; Kilbinger, Martin; Kuntzer, Thibault; Lang, Dustin; Luo, Wentao; March, Marisa C.; Marshall, Philip J.; Meyers, Joshua E.; Miller, Lance; Miyatake, Hironao; Nakajima, Reiko; Ngole Mboula, Fred Maurice; Nurbaeva, Guldariya; Okura, Yuki; Paulin-Henriksson, Stephane; Rhodes, Jason; Schneider, Michael D.; Shan, Huanyuan; Sheldon, Erin S.; Simet, Melanie; Starck, Jean -Luc; Sureau, Florent; Tewes, Malte; Zarb Adami, Kristian; Zhang, Jun; Zuntz, Joe

    2015-05-11

    The study present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravitational lensing shear distortions from simulated galaxy images. GREAT3 was divided into experiments to test three specific questions, and included simulated space- and ground-based data with constant or cosmologically varying shear fields. The simplest (control) experiment included parametric galaxies with a realistic distribution of signal-to-noise, size, and ellipticity, and a complex point spread function (PSF). The other experiments tested the additional impact of realistic galaxy morphology, multiple exposure imaging, and the uncertainty about a spatially varying PSF; the last two questions will be explored in Paper II. The 24 participating teams competed to estimate lensing shears to within systematic error tolerances for upcoming Stage-IV dark energy surveys, making 1525 submissions overall. GREAT3 saw considerable variety and innovation in the types of methods applied. Several teams now meet or exceed the targets in many of the tests conducted (to within the statistical errors). We conclude that the presence of realistic galaxy morphology in simulations changes shear calibration biases by ~1 per cent for a wide range of methods. Other effects such as truncation biases due to finite galaxy postage stamps, and the impact of galaxy type as measured by the Sérsic index, are quantified for the first time. Our results generalize previous studies regarding sensitivities to galaxy size and signal-to-noise, and to PSF properties such as seeing and defocus. Almost all methods’ results support the simple model in which additive shear biases depend linearly on PSF ellipticity.

  13. Pollution error in the h-version of the finite-element method and the local quality of a-posteriori error estimators 

    E-Print Network [OSTI]

    Mathur, Anuj

    1994-01-01

    In this work we study the pollution-error in the h-version of the finite element method and its effect on the local quality of a-posteriori error estimators. We show that the pollution-effect in an interior subdomain depends on the relationship...

  14. Errors, 3rd printing Page 3, Fig 1.2 has an error in the stratigraphic key: "Tertiary" should be "Triassic".

    E-Print Network [OSTI]

    Fossen, Haakon

    Errors, 3rd printing ·Page 3, Fig 1.2 has an error in the stratigraphic key: "Tertiary" should "-amplitude" to "-wavelength". ·Page 231, 6th and 3rd last lines of the page: Add "Figure" in front of 19.5a ..." and 3rd line: "three principal axes" (not two). #12;

  15. Rangely, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/WaterEnergy Marketing CorpMember Corp JumpRangely, Colorado:

  16. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    Howes, G G

    2007-01-01

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the ther...

  17. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    G. G. Howes

    2007-11-27

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the thermalization of fusion energy in burning plasmas.

  18. Coordinated joint motion control system with position error correction

    DOE Patents [OSTI]

    Danko, George (Reno, NV)

    2011-11-22

    Disclosed are an articulated hydraulic machine supporting, control system and control method for same. The articulated hydraulic machine has an end effector for performing useful work. The control system is capable of controlling the end effector for automated movement along a preselected trajectory. The control system has a position error correction system to correct discrepancies between an actual end effector trajectory and a desired end effector trajectory. The correction system can employ one or more absolute position signals provided by one or more acceleration sensors supported by one or more movable machine elements. Good trajectory positioning and repeatability can be obtained. A two-joystick controller system is enabled, which can in some cases facilitate the operator's task and enhance their work quality and productivity.

  19. Creating dynamic equivalent PV circuit models with impedance spectroscopy for arc-fault modeling.

    SciTech Connect (OSTI)

    Johnson, Jay Dean; Kuszmaul, Scott S.; Strauch, Jason E.; Schoenwald, David Alan

    2011-06-01

    Article 690.11 in the 2011 National Electrical Code{reg_sign} (NEC{reg_sign}) requires new photovoltaic (PV) systems on or penetrating a building to include a listed arc fault protection device. Currently there is little experimental or empirical research into the behavior of the arcing frequencies through PV components despite the potential for modules and other PV components to filter or attenuate arcing signatures that could render the arc detector ineffective. To model AC arcing signal propagation along PV strings, the well-studied DC diode models were found to inadequately capture the behavior of high frequency arcing signals. Instead dynamic equivalent circuit models of PV modules were required to describe the impedance for alternating currents in modules. The nonlinearities present in PV cells resulting from irradiance, temperature, frequency, and bias voltage variations make modeling these systems challenging. Linearized dynamic equivalent circuits were created for multiple PV module manufacturers and module technologies. The equivalent resistances and capacitances for the modules were determined using impedance spectroscopy with no bias voltage and no irradiance. The equivalent circuit model was employed to evaluate modules having irradiance conditions that could not be measured directly with the instrumentation. Although there was a wide range of circuit component values, the complex impedance model does not predict filtering of arc fault frequencies in PV strings for any irradiance level. Experimental results with no irradiance agree with the model and show nearly no attenuation for 1 Hz to 100 kHz input frequencies.

  20. Population genetic analysis of a recent range expansion: mechanisms regulating the poleward range limit

    E-Print Network [OSTI]

    Grosberg, Rick

    with the range limit. We infer that the primary cause of the northern range boundary in T. rubescens is migration mechanisms--genetic impoverishment, migration load, or a physical barrier to dis- persal--are well described similarly affect all taxa in a region whose distributional limits are established by migration load

  1. A torsion balance for probing a non-standard force in the sub-micrometre range

    E-Print Network [OSTI]

    Masuda, M; Araya, A

    2015-01-01

    We report the performance of an instrument that employs a torsion balance for probing a non-standard force in the sub-micrometre range. High sensitivity is achieved by using a torsion balance that has a long torsional period, strong magnetic damping of all vibrational motions and a feedback system that employs an optical lever. In torsion balance experiments, the distance fluctuations during measurements and the accuracy to which the absolute distance is determined are crucial for determining the sensitivity of the balance to a macroscopic force in the sub-micrometre range. We have estimated the root mean square amplitude of the distance fluctuation to be 18 nm by considering the effects due to seismic motions, tilt motions, residual angular fluctuations and thermal fluctuations. We have also estimated the error of the absolute distance to be 13 nm and the statistical error of the force to be 3.4$\\times$10$^{-12}$ N by measuring the electrostatic forces. As a result of this systematic study, we have evaluated...

  2. Tonopah Test Range 2030 Meeting Summary Report

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2009-04-01

    Corrective Action Sites (CASs) and Corrective Action Units (CAUs) at the Tonopah Test Range (TTR) may be placed into three categories: Closed, Closed in Place, or Closure in Progress. CASs and CAUs where contaminants were either not detected or were cleaned up to within regulatory action levels are summarized. CASs and CAUs where contaminants and/or waste have been closed in place are summarized. There is also a table that summarizes the contaminant that has been closed at each site, if land-use restrictions are present, and if post-closure inspections are required.

  3. Rangely Oilfield Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels

  4. Help:Range blocks | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA JumpDuimen River PowerHeckert BXT SolarHelioNova S LLinkedRange

  5. Range Fuels Biorefinery Groundbreaking | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuildingBudget ||Department ofRequest7of 9 RadiologicalRainRancherRange

  6. Interpreting Soap Operas and Creating Community: Inside a Computer-Mediated Fan Culture

    E-Print Network [OSTI]

    Baym, Nancy K.

    1993-11-01

    document contains the author’s accepted manuscript. For the publisher’s version, see the link in the header of this document.] Interpreting Soap Operas and Creating Community: Inside a Computer–Mediated Fan Culture Nancy K. Baym Visiting.... K. (1993). Interpreting Soap Operas and Creating Community: Inside a Computer-Mediated Fan Culture. Journal of Folklore Research, Vol. 30(2/3), 143-176. Baym, N. K. (1993). Interpreting Soap Operas and Creating Community: Inside a Computer...

  7. InVited Feature Article Creating Advanced Multifunctional Biosensors with Surface Enzymatic

    E-Print Network [OSTI]

    InVited Feature Article Creating Advanced Multifunctional Biosensors with Surface Enzymatic interactions on biopolymer microarrays for the creation of multiplexed biosensors with enhanced selectivity

  8. Hot spot generation in energetic materials created by long-wavelength...

    Office of Scientific and Technical Information (OSTI)

    Hot spot generation in energetic materials created by long-wavelength infrared radiation Citation Details In-Document Search Title: Hot spot generation in energetic materials...

  9. INTERNATIONALIZING BRAZIL’S UNIVERSITIES: Creating Coherent National Policies Must Be a Priority

    E-Print Network [OSTI]

    Knobel, Marcelo

    2011-01-01

    INTERNATIONALIZING BRAZIL’S UNIVERSITIES: Creating Coherentalternatives. How will Brazil fare in this competition foreducation study programs, Brazil must deal with a number of

  10. Creating energy-efficient, affordable housing Joel Fischer, Ana Hawkins, Keith Lindgren, Ceci Marn

    E-Print Network [OSTI]

    Netoff, Theoden

    UMore Park Creating energy-efficient, affordable housing 5/9/2011 Joel Fischer, Ana Hawkins, Keith........................................................................................................5 Energy Efficiency.......................................................................................................................................5 Energy Efficiency Standards in Affordable Housing

  11. Division of Information Technology University of Maryland 1 Creating and Managing Content

    E-Print Network [OSTI]

    Yorke, James

    Creating and Managing Content in ELMS DIT Learning Technology ServiceDivision of Information Technology ©University of Maryland 1 #12;Division of Information Technology ©University of Maryland 2

  12. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. 14 figs.

  13. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

  14. Contagious error sources would need time travel to prevent quantum computation

    E-Print Network [OSTI]

    Gil Kalai; Greg Kuperberg

    2015-05-07

    We consider an error model for quantum computing that consists of "contagious quantum germs" that can infect every output qubit when at least one input qubit is infected. Once a germ actively causes error, it continues to cause error indefinitely for every qubit it infects, with arbitrary quantum entanglement and correlation. Although this error model looks much worse than quasi-independent error, we show that it reduces to quasi-independent error with the technique of quantum teleportation. The construction, which was previously described by Knill, is that every quantum circuit can be converted to a mixed circuit with bounded quantum depth. We also consider the restriction of bounded quantum depth from the point of view of quantum complexity classes.

  15. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2008-09-02

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  16. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2009-02-24

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  17. Ultrasonic ranging and data telemetry system

    DOE Patents [OSTI]

    Brashear, Hugh R. (Farragut, TN); Blair, Michael S. (Knoxville, TN); Phelps, James E. (Knoxville, TN); Bauer, Martin L. (Oak Ridge, TN); Nowlin, Charles H. (Oak Ridge, TN)

    1990-01-01

    An ultrasonic ranging and data telemetry system determines a surveyor's position and automatically links it with other simultaneously taken survey data. An ultrasonic and radio frequency (rf) transmitter are carried by the surveyor in a backpack. The surveyor's position is determined by calculations that use the measured transmission times of an airborne ultrasonic pulse transmitted from the backpack to two or more prepositioned ultrasonic transceivers. Once a second, rf communications are used both to synchronize the ultrasonic pulse transmission-time measurements and to transmit other simultaneously taken survey data. The rf communications are interpreted by a portable receiver and microcomputer which are brought to the property site. A video display attached to the computer provides real-time visual monitoring of the survey progress and site coverage.

  18. Ultra High Mass Range Mass Spectrometer System

    DOE Patents [OSTI]

    Reilly, Peter T. A. [Knoxville, TN

    2005-12-06

    Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 10.sup.16 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic lens system, a reverse jet being a gas flux generated in an annulus moving in a reverse direction and a multipole ion guide; a digital ion trap; and a thermal vaporization/ionization detector system. Applicant's present invention further comprises a quadrupole mass spectrometer system comprising an inlet system having a quadrupole mass filter and a thermal vaporization/ionization detector system. Applicant's present invention further comprises an inlet system for use with a mass spectrometer system, a method for slowing energetic particles using an inlet system. Applicant's present invention also comprises a detector device and a method for detecting high mass charged particles.

  19. Fe-based long range ordered alloys

    DOE Patents [OSTI]

    Liu, Chain T (Oak Ridge, TN); Inouye, Henry (Oak Ridge, TN); Schaffhauser, Anthony C. (Oak Ridge, TN)

    1980-01-01

    Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Co,Fe).sub.3 and V(Co,Fe,Ni).sub.3 system having the composition comprising by weight 22-23% V, 35-50% Fe, 0-22% Co and 19-40% Ni with an electron density no greater than 8.00. Excellent high temperature properties occur in alloys having compositions comprising by weight 22-23% V, 35-45% Fe, 0-10% Co, 25-35% Ni; 22-23% V, 28-33% Ni and the remainder Fe; and 22-23% V, 19-22% Ni, 19-22% Co and the remainder Fe. The alloys are fabricable by casting, deforming and annealing for sufficient time to provide ordered structure.

  20. Method and apparatus for detecting timing errors in a system oscillator

    DOE Patents [OSTI]

    Gliebe, Ronald J. (Library, PA); Kramer, William R. (Bethel Park, PA)

    1993-01-01

    A method of detecting timing errors in a system oscillator for an electronic device, such as a power supply, includes the step of comparing a system oscillator signal with a delayed generated signal and generating a signal representative of the timing error when the system oscillator signal is not identical to the delayed signal. An LED indicates to an operator that a timing error has occurred. A hardware circuit implements the above-identified method.

  1. Plasma dynamics and a significant error of macroscopic averaging

    E-Print Network [OSTI]

    Marek A. Szalek

    2005-05-22

    The methods of macroscopic averaging used to derive the macroscopic Maxwell equations from electron theory are methodologically incorrect and lead in some cases to a substantial error. For instance, these methods do not take into account the existence of a macroscopic electromagnetic field EB, HB generated by carriers of electric charge moving in a thin layer adjacent to the boundary of the physical region containing these carriers. If this boundary is impenetrable for charged particles, then in its immediate vicinity all carriers are accelerated towards the inside of the region. The existence of the privileged direction of acceleration results in the generation of the macroscopic field EB, HB. The contributions to this field from individual accelerated particles are described with a sufficient accuracy by the Lienard-Wiechert formulas. In some cases the intensity of the field EB, HB is significant not only for deuteron plasma prepared for a controlled thermonuclear fusion reaction but also for electron plasma in conductors at room temperatures. The corrected procedures of macroscopic averaging will induce some changes in the present form of plasma dynamics equations. The modified equations will help to design improved systems of plasma confinement.

  2. Aperiodic dynamical decoupling sequences in presence of pulse errors

    E-Print Network [OSTI]

    Wang, Zhi-Hui

    2011-01-01

    Dynamical decoupling (DD) is a promising tool for preserving the quantum states of qubits. However, small imperfections in the control pulses can seriously affect the fidelity of decoupling, and qualitatively change the evolution of the controlled system at long times. Using both analytical and numerical tools, we theoretically investigate the effect of the pulse errors accumulation for two aperiodic DD sequences, the Uhrig's DD UDD) protocol [G. S. Uhrig, Phys. Rev. Lett. {\\bf 98}, 100504 (2007)], and the Quadratic DD (QDD) protocol [J. R. West, B. H. Fong and D. A. Lidar, Phys. Rev. Lett {\\bf 104}, 130501 (2010)]. We consider the implementation of these sequences using the electron spins of phosphorus donors in silicon, where DD sequences are applied to suppress dephasing of the donor spins. The dependence of the decoupling fidelity on different initial states of the spins is the focus of our study. We investigate in detail the initial drop in the DD fidelity, and its long-term saturation. We also demonstra...

  3. Reducing systematic errors in time-frequency resolved mode number analysis

    E-Print Network [OSTI]

    Horváth, L; Papp, G; Maraschek, M; Schuhbeck, K H; Pokol, G I

    2015-01-01

    The present paper describes the effect of magnetic pick-up coil transfer functions on mode number analysis in magnetically confined fusion plasmas. Magnetic probes mounted inside the vacuum chamber are widely used to characterize the mode structure of magnetohydrodynamic modes, as, due to their relative simplicity and compact nature, several coils can be distributed over the vessel. Phase differences between the transfer functions of different magnetic pick-up coils lead to systematic errors in time- and frequency resolved mode number analysis. This paper presents the first in-situ, end-to-end calibration of a magnetic pick-up coil system which was carried out by using an in-vessel driving coil on ASDEX Upgrade. The effect of the phase differences in the pick-up coil transfer functions is most significant in the 50-250 kHz frequency range, where the relative phase shift between the different probes can be up to 1 radian (~60{\\deg}). By applying a correction based on the transfer functions we found smaller res...

  4. 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any c

    E-Print Network [OSTI]

    intercontinental ballistic missiles, Trident nuclear submarines, and long-range strategic bombers. Today, however assured destruction. To enforce this policy, the US created a strategic triad composed of nuclear

  5. The Importance of Run-time Error Detection Glenn R. Luecke 1

    E-Print Network [OSTI]

    Luecke, Glenn R.

    Iowa State University's High Performance Computing Group, Iowa State University, Ames, Iowa 50011, USA State University's High Performance Computing Group for evaluating run-time error detection capabilities

  6. A Key Recovery Attack on Error Correcting Code Based a Lightweight Security Protocol

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    become prevalent in various fields. Manufacturing, supply chain management and inventory control are some--Authentication, error correcting coding, lightweight, privacy, RFID, security ! 1 INTRODUCTION RFID technology has

  7. Eccentricity Error Correction for Automated Estimation of Polyethylene Wear after Total Hip Arthroplasty

    E-Print Network [OSTI]

    Ulidowski, Irek

    Eccentricity Error Correction for Automated Estimation of Polyethylene Wear after Total Hip. Wire markers are typically attached to the polyethylene acetabular component of the prosthesis so

  8. Choose and choose again: appearance-reality errors, pragmatics and logical ability

    E-Print Network [OSTI]

    Deák, Gedeon O; Enright, Brian

    2006-01-01

    Development, 62, 753–766. Speer, J.R. (1984). Two practicalolder still make errors (e.g. Speer, 1984), some preschool

  9. Choose and choose again: appearance-reality errors, pragmatics and logical ability.

    E-Print Network [OSTI]

    Deák, Gedeon O; Enright, Brian

    2006-01-01

    Development, 62, 753-766. Speer, J. R. (1984). Two practicalolder still make errors (e.g. , Speer, 1984), some preschool

  10. Neutron Soft Errors in Xilinx FPGAs at Lawrence Berkeley National Laboratory

    E-Print Network [OSTI]

    George, Jeffrey S.

    2008-01-01

    Quasi-Monoenergetic Neutron Beam from Deuteron Breakup”, inexperiments of atmospheric neutron effects on deep sub-Neutron Soft Errors in Xilinx FPGAs at Lawrence Berkeley

  11. Threshold analysis with fault-tolerant operations for nonbinary quantum error correcting codes 

    E-Print Network [OSTI]

    Kanungo, Aparna

    2005-11-01

    an expression to compute the gate error threshold for nonbinary quantum codes and test this result for different classes of codes, to get codes with best threshold results....

  12. Mid-range adiabatic wireless energy transfer via a mediator coil

    E-Print Network [OSTI]

    Rangelov, Andon A

    2012-01-01

    A technique for efficient mid-range wireless energy transfer between two coils via a mediator coil is proposed. By varying the coil frequencies three resonances are created: emitter-mediator (EM), mediator-receiver (MR) and emitter-receiver (ER). If the frequency sweeps are adiabatic and such that the ER resonance precedes the MR resonance, the energy flows sequentially along the chain emitter-mediator-receiver. If the MR resonance precedes the ER resonance, then the energy flows directly from the emitter to the receiver via the ER resonance; then the losses from the mediator are suppressed. This technique is robust to noise, resonant constraints and external interferences.

  13. Creating a Virtual Training Environment for Traffic Accident Investigation for the Dubai Police Force

    E-Print Network [OSTI]

    Maddock, Steve

    Creating a Virtual Training Environment for Traffic Accident Investigation for the Dubai Police in the Dubai police force. The second part also serves to evaluate the scalability of the architecture created. They also reveal that GSA adds little development overhead. The ability of GSA to scale to real world

  14. PagePrompter: An Intelligent Agent for Web Navigation Created Using Data Mining Techniques

    E-Print Network [OSTI]

    Regina, University of

    1 PagePrompter: An Intelligent Agent for Web Navigation Created Using Data Mining Techniques Y.Y. Yao, H.J. Hamilton, and Xuewei Wang Abstract: Creating an intelligent agent for web navigation, which is an agent that dynam- ically gives recommendations to a web site's users by learning from web usage mining

  15. The net carbon footprint of a newly created boreal hydroelectric reservoir

    E-Print Network [OSTI]

    The net carbon footprint of a newly created boreal hydroelectric reservoir Cristian R. Teodoru,1 of a boreal hydroelectric reservoir (Eastmain-1 in northern Québec, Canada). This is the result of a large. Citation: Teodoru, C. R., et al. (2012), The net carbon footprint of a newly created boreal hydroelectric

  16. Design and Evaluation of Afterthought, A System that Automatically Creates Highlight Cinematics for 3D Games

    E-Print Network [OSTI]

    Young, R. Michael

    Design and Evaluation of Afterthought, A System that Automatically Creates Highlight Cinematics and renders cinematic highlights of the story-oriented game play, allowing players to view these emergent as well as an empirical human-subjects evaluation of the effectiveness of the cinematics that it creates

  17. ISIS 9.0 | Search for Classes 1 Created: 10.5.10

    E-Print Network [OSTI]

    Capogna, Luca

    ISIS 9.0 | Search for Classes 1 Created: 10.5.10 Search for Classes ISIS; ISIS 9.0 | Search for Classes 2 Created: 10.5.10 Search for Classes ISIS 9. Click the button next to the desired course subject. #12; ISIS 9.0 | Search for Classes 3

  18. ISIS 9.0 | Student Center|Schedule Planner Created: 03.30.15

    E-Print Network [OSTI]

    Capogna, Luca

    1 ISIS 9.0 | Student Center|Schedule Planner Created: 03.30.15 Student Center - Schedule Planner ISIS 9.0 Schedule Planner 1. Access Schedule Planner 1.1 Log on to your Student Center. 1.2 Click in the upper right corner of the page. #12;2 ISIS 9.0 | Student Center|Schedule Planner Created: 03

  19. ISIS 9.0 | Setting Your FERPA Restrictions 1 Created: 10.23.13

    E-Print Network [OSTI]

    Capogna, Luca

    ISIS 9.0 | Setting Your FERPA Restrictions 1 Created: 10.23.13 Setting Your FERPA Restrictions ISIS session, they will appear here. #12;ISIS 9.0 | Setting Your FERPA Restrictions 2 Created: 10.23.13 Setting Your FERPA Restrictions ISIS 9.0 5. Click the icon to activate the Field Restrictions check boxes 6

  20. ISIS Assistant 9.0 | Official Transcript Request Created: 04.29.13

    E-Print Network [OSTI]

    Capogna, Luca

    ISIS Assistant 9.0 | Official Transcript Request Created: 04.29.13 ISIS Assistant Official Center page and select the direct link to the request page. #12;ISIS Assistant 9.0 | Official Transcript Request Created: 04.29.13 ISIS Assistant Official Transcript Request Student Center 3. From the Official

  1. Virtual Lobby: Smart Home Interface Design for Creating Community in Condominiums

    E-Print Network [OSTI]

    Sun, Yu

    Virtual Lobby: Smart Home Interface Design for Creating Community in Condominiums Acknowledgments user interest and available products in the current smart home technology market. To create consumer, Stacey Howchin, Ashleigh Shier Our purpose is to design and evaluate an in- home user interface

  2. SnakeToonz : A Semi-Automatic Approach to Creating Cel Animation Aseem Agarwala1

    E-Print Network [OSTI]

    Washington at Seattle, University of

    . The ability to create cartoons has tradi- tionally been limited to professional animation houses and trained-film cartoons are hand-drawn by animation houses with large teams of highly-trained artists at a very high 1SnakeToonz : A Semi-Automatic Approach to Creating Cel Animation from Video Aseem Agarwala1 Starlab

  3. Architecture and System Analysis of Microgrids with Peer-to-Peer Electricity Sharing to Create a

    E-Print Network [OSTI]

    Perreault, Dave

    Architecture and System Analysis of Microgrids with Peer-to-Peer Electricity Sharing to Create more electricity at certain times. These ad- hoc microgrids created by sharing of resources provide--Dc microgrids, energy access, Power manage- ment Unit I. INTRODUCTION The lack of electricity is one of the most

  4. Creating a Journal Article This cheatsheet will explain how to enter a Journal Article into IRMA.

    E-Print Network [OSTI]

    Creating a Journal Article This cheatsheet will explain how to enter a Journal Article into IRMA (MAIS ID (Staff, Student or MAIS other number)) and MAIS Password. Creating new journal article record) In the Publication Output field, click to choose Journal. Have a look at the table below to work out which

  5. Syringe-vacuum microfluidics: A portable technique to create monodisperse emulsions

    E-Print Network [OSTI]

    Syringe-vacuum microfluidics: A portable technique to create monodisperse emulsions Adam R. Abate March 2011 We present a simple method for creating monodisperse emulsions with microfluidic devices physics to operate devices, our method requires only the microfluidic device and a hand-operated syringe

  6. ME2800 Ideation -Creating a Business Idea 7,5 hp

    E-Print Network [OSTI]

    Arvestad, Lars

    models for customer, market and competitor analysis - Develop a basic business model Kursens huvudsakligaME2800 Ideation - Creating a Business Idea 7,5 hp Ideation - Creating a Business Idea Kursplan för a business opportunity - Develop and explain a business idea - Use creativity-techniques to extend

  7. An Automated System for Converting App Inventor Apps to Java Interface For Creating and Managing Projects

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    An Automated System for Converting App Inventor Apps to Java Interface For Creating and Managing of Computer Science Graphical Environment For Creating Layouts MIT App Inventor An Automated System for Converting App Inventor Apps to JavaAn Automated System for Converting App Inventor Apps to JavaAn Automated

  8. Creating High-quality Roadmaps for Motion Planning in Virtual Environments

    E-Print Network [OSTI]

    Geraerts, R.J.

    Creating High-quality Roadmaps for Motion Planning in Virtual Environments Roland Geraerts and Mark, the Netherlands Email: {roland,markov}@cs.uu.nl Abstract-- Our goal is to create roadmaps that are particularly suited for motion planning in virtual environments. We use our Reachability Roadmap Method to compute

  9. Creating Small Roadmaps for Solving Motion Planning Problems Roland Geraerts and Mark H. Overmars

    E-Print Network [OSTI]

    Geraerts, R.J.

    Creating Small Roadmaps for Solving Motion Planning Problems Roland Geraerts and Mark H. Overmars,markov}@cs.uu.nl Abstract-- In robot motion planning, many algorithms have been proposed that create a roadmap from which on the quality of the roadmap, i.e. they do not promise that a path will always be found in the roadmap if one

  10. Creating Small Roadmaps for Solving Motion Planning Problems # Roland Geraerts and Mark H. Overmars

    E-Print Network [OSTI]

    Geraerts, R.J.

    Creating Small Roadmaps for Solving Motion Planning Problems # Roland Geraerts and Mark H. Overmars,markov}@cs.uu.nl Abstract--- In robot motion planning, many algorithms have been proposed that create a roadmap from which on the quality of the roadmap, i.e. they do not promise that a path will always be found in the roadmap if one

  11. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 1 PNWD-SA-7032 Range Sustainability Module Using Visual Sample Plan (VSP) Software Range Sustainability ModuleRange Sustainability Module Using Visual Sample Sustainability (VSP) PNWD-SA-7032 2 PNWD-SA-7032 / 2 ObjectiveObjectiveObjective Learn how to use the Range

  12. Long range optical phonons in liquid water

    E-Print Network [OSTI]

    Elton, Daniel C

    2015-01-01

    In this work we show that on subpicosecond time scales optical phonon modes can propagate through the H-bond network of water over relatively long distances (2-4 nm). Using molecular dynamics simulation we find propagating optical phonons in the librational and OH stretching bands. The OH stretching phonon only appears when a polarizable model (TTM3-F) is employed. Both of these phonon modes exhibit LO-TO splitting at $k = 0$, indicating long range dipole-dipole interactions in the system. We study the LO-TO splitting as a function of temperature, finding that the splitting increases for the librational mode at higher temperatures but decreases for the stretching mode. Since LO-TO splitting is intimately connected to structure, this analysis opens the door for new insights into how the local structure of water changes with temperature. Our results also explain a previously unnoticed discrepancy one encounters when comparing the librational peaks found in Raman and IR/dielectric spectra. Previously the three R...

  13. Evaluating specific error characteristics of microwave-derived cloud liquid water products

    E-Print Network [OSTI]

    Christopher, Sundar A.

    of cloud LWP products globally using concurrent data from visible/ infrared satellite sensors. The approachEvaluating specific error characteristics of microwave-derived cloud liquid water products Thomas J microwave satellite measurements. Using coincident visible/infrared satellite data, errors are isolated

  14. A nonideal error-field response model for strongly shaped tokamak plasmas R. Fitzpatrick

    E-Print Network [OSTI]

    Fitzpatrick, Richard

    A nonideal error-field response model for strongly shaped tokamak plasmas R. Fitzpatrick Citation of a rotating tokamak plasma to a resonant error-field Phys. Plasmas 21, 092513 (2014); 10.1063/1.4896244 Kinetic description of rotating Tokamak plasmas with anisotropic temperatures in the collisionless regime

  15. Upper Bounds on ErrorCorrecting RunlengthLimited Block Codes

    E-Print Network [OSTI]

    Ytrehus, Ã?yvind

    . Inf. Th. May 1991, pp. 941--945 Abstract --- Upper bounds are derived on the number of codewords­limited codes, error­correction. This work was supported by the Norwegian Research Council for Science on the size of (d; k)­ constrained, simple­error correcting block codes. There are two directions in which one

  16. Finite Element Approximation of the Acoustic Wave Equation: Error Control and Mesh

    E-Print Network [OSTI]

    Bangerth, Wolfgang

    Finite Element Approximation of the Acoustic Wave Equation: Error Control and Mesh Adaptation of the Acoustic Wave Equation: Error Control and Mesh Adaptation Wolfgang Bangerth and Rolf Rannacher1 Institute@iwr.uni-heidelberg.de Abstract We present an approach to solving the acoustic wave equation by adaptive finite el- ement methods

  17. Low-voltage, low-power, low switching error, class-AB switched current

    E-Print Network [OSTI]

    Serdijn, Wouter A.

    Low-voltage, low-power, low switching error, class-AB switched current memory cell C. Sawigun and W into two components by a low-voltage class-AB current splitter and subsequently processes the individual signals by two low switching error class-A memory cells. As a conse- quence, the output current obtained

  18. Using system simulation to model the impact of human error in a maritime system

    E-Print Network [OSTI]

    van Dorp, Johan René

    the modeling of human error related accident event sequences in a risk assessment of maritime oil framwork was developed for the Prince William Sound Risk Assessment based on interviews with maritime William Sound; Human error; Maritime accidents; Expert judgement; Risk assessment; Risk management 1

  19. Convergence Analysis of the LMS Algorithm with a General Error Nonlinearity and an IID Input

    E-Print Network [OSTI]

    Al-Naffouri, Tareq Y.

    Convergence Analysis of the LMS Algorithm with a General Error Nonlinearity and an IID Input Tareq. of Electrical Eng. Abstract The class of least mean square (LMS) algorithms employing a general error are entirely consis- tent with those of the LMS algorithm and several of its variants. The results also

  20. The Optimum Error Nonlinearity in LMS Adaptation with an Independent and Identically Distributed Input

    E-Print Network [OSTI]

    Al-Naffouri, Tareq Y.

    The Optimum Error Nonlinearity in LMS Adaptation with an Independent and Identically Distributed, CA 94305 Dhahran 31261 USA Saudi Arabia Abstract The class of LMS algorithms employing a gen- eral view of error nonlinearities in LMS adaptation. In particular, it subsumes two recently developed

  1. Outage Probability for Free-Space Optical Systems Over Slow Fading Channels With Pointing Errors

    E-Print Network [OSTI]

    Hranilovic, Steve

    Outage Probability for Free-Space Optical Systems Over Slow Fading Channels With Pointing Errors, Canada. Email: farid@grads.ece.mcmaster.ca, hranilovic@mcmaster.ca Abstract-- We investigate the outage errors. An expression for the outage probability is derived and we show that optimizing the transmit- ted

  2. Object calculus and the object-oriented analysis and design of an error-sensitive GIS

    E-Print Network [OSTI]

    Duckham, Matt

    Object calculus and the object-oriented analysis and design of an error-sensitive GIS MATT DUCKHAM of an error-sensitive GIS Abstract. The use of object-oriented analysis and design (OOAD) in GIS research of the key contemporary issues in GIS. This paper examines the application of one particular OO formalism

  3. State preservation by repetitive error detection in a superconducting quantum circuit J. Kelly,1,

    E-Print Network [OSTI]

    Martinis, John M.

    State preservation by repetitive error detection in a superconducting quantum circuit J. Kelly,1 , and superconducting circuits11­13 have demonstrated multi-qubit states that are first-order toler- ant to one type of error. Recently, experiments with ion traps and superconducting circuits have shown the simultaneous de

  4. Mitigating FPGA Interconnect Soft Errors by In-Place LUT Inversion

    E-Print Network [OSTI]

    He, Lei

    , power and perfor- mance. Recent logic re-synthesis techniques, such as ROSE [2], IPR [3], IPD [4] and R2Mitigating FPGA Interconnect Soft Errors by In-Place LUT Inversion Naifeng Jing1 , Ju-Yueh Lee2 the Soft Error Rate (SER) at chip level, and reveal a locality and NP-Hardness of the IPV problem. We

  5. Mitigating FPGA Interconnect Soft Errors by In-Place LUT Inversion

    E-Print Network [OSTI]

    He, Lei

    but with high overhead in area, power and performance. Recent logic re-synthesis techniques, such as ROSE [2Mitigating FPGA Interconnect Soft Errors by In-Place LUT Inversion Naifeng Jing1 , Ju-Yueh Lee2 the Soft Error Rate (SER) at chip level, and reveal a locality and NP-Hardness of the IPV problem. We

  6. An Energy-Aware Fault Tolerant Scheduling Framework for Soft Error Resilient Cloud Computing Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    An Energy-Aware Fault Tolerant Scheduling Framework for Soft Error Resilient Cloud Computing has drastically increased their susceptibility to soft errors. At the grand scale of cloud computing outputs or system crash. At the grand scale of cloud computing, this problem can only worsen [2, 3, 4, 5

  7. PII S00167037(99)00204-5 A test for systematic errors in 40

    E-Print Network [OSTI]

    Min, Kyoungwon

    dating arise from uncertainties in the 40 K decay constants and K/Ar isotopic data for neutron fluence monitors (standards). The activity data underlying the decay constants used in geochronology since 1977). These studies have shown that system- atic errors outweigh typical analytical errors by at least one order

  8. TYPOGRAPHICAL AND ORTHOGRAPHICAL SPELLING ERROR Kyongho Min*, William H. Wilson*, Yoo-Jin Moon

    E-Print Network [OSTI]

    Wilson, Bill

    -Jin Moon *School of Computer Science and Engineering The University of New South Wales Sydney NSW 2052 of spelling errors such as typographical (Damerau, 1964; Pollock and Zamora, 1983), orthographical (Sterling), and orthographical errors in spontaneous writings of children (Sterling, 1983; Mitton, 1987). 1.2. Approaches

  9. A Case for Soft Error Detection and Correction in Computational Chemistry

    SciTech Connect (OSTI)

    van Dam, Hubertus JJ; Vishnu, Abhinav; De Jong, Wibe A.

    2013-09-10

    High performance computing platforms are expected to deliver 10(18) floating operations per second by the year 2022 through the deployment of millions of cores. Even if every core is highly reliable the sheer number of the them will mean that the mean time between failures will become so short that most applications runs will suffer at least one fault. In particular soft errors caused by intermittent incorrect behavior of the hardware are a concern as they lead to silent data corruption. In this paper we investigate the impact of soft errors on optimization algorithms using Hartree-Fock as a particular example. Optimization algorithms iteratively reduce the error in the initial guess to reach the intended solution. Therefore they may intuitively appear to be resilient to soft errors. Our results show that this is true for soft errors of small magnitudes but not for large errors. We suggest error detection and correction mechanisms for different classes of data structures. The results obtained with these mechanisms indicate that we can correct more than 95% of the soft errors at moderate increases in the computational cost.

  10. Measurement and Analysis of the Error Characteristics of an In-Building Wireless Network

    E-Print Network [OSTI]

    Steenkiste, Peter

    on fiber or electrical connections have excellent error characteris- tics but that wireless networksMeasurement and Analysis of the Error Characteristics of an In-Building Wireless Network David fdavide,prsg@cs.cmu.edu Abstract There is general belief that networks based on wireless technolo- gies

  11. A Non-Stationary Errors-in-Variables Method with Application to Mineral Exploration

    E-Print Network [OSTI]

    Braslavsky, Julio H.

    A Non-Stationary Errors-in-Variables Method with Application to Mineral Exploration K. Lau 1 J. H-cancellation in transient electromagnetic mineral exploration. Alternative methods for noise cancellation in these systems for this class of systems is proposed and applied to a problem arising in mineral exploration. An errors

  12. Presenting JECA: A Java Error Correcting Algorithm for the Java Intelligent Tutoring System

    E-Print Network [OSTI]

    Franek, Frantisek

    Presenting JECA: A Java Error Correcting Algorithm for the Java Intelligent Tutoring System Edward context involving small Java programs. Furthermore, this paper presents JECA (Java Error Correction is to provide a foundation for the Java Intelligent Tutoring System (JITS) currently being field-tested. Key

  13. A POSTERIORI ERROR ANALYSIS OF THE LINKED INTERPOLATION TECHNIQUE FOR PLATE BENDING PROBLEMS

    E-Print Network [OSTI]

    Lovadina, Carlo

    A POSTERIORI ERROR ANALYSIS OF THE LINKED INTERPOLATION TECHNIQUE FOR PLATE BENDING PROBLEMS CARLO Interpolation Tech- nique' to approximate the solution of plate bending problems. We show that the proposed. 1. Introduction. In this paper we present an a posteriori error analysis for the so-called `Linked

  14. Integrated Control-Path Design and Error Recovery in the Synthesis of Digital

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    11 Integrated Control-Path Design and Error Recovery in the Synthesis of Digital Microfluidic Lab that incorporates control paths and an error- recovery mechanism in the design of a digital microfluidic lab, compared to a baseline chip design, the biochip with a control path can reduce the completion time by 30

  15. Impact of Turbulence Closures and Numerical Errors for the Optimization of Flow Control Devices

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Impact of Turbulence Closures and Numerical Errors for the Optimization of Flow Control Devices J the use of a Kriging-based global optimization method to determine optimal control parameters conduct an optimization process and measure the impact of numerical and modeling errors on the optimal

  16. ERROR BOUNDS FOR MONOTONE APPROXIMATION SCHEMES FOR HAMILTON-JACOBI-BELLMAN

    E-Print Network [OSTI]

    ERROR BOUNDS FOR MONOTONE APPROXIMATION SCHEMES FOR HAMILTON-JACOBI-BELLMAN EQUATIONS GUY BARLES AND ESPEN R. JAKOBSEN Abstract. We obtain error bounds for monotone approximation schemes of Hamilton-Jacobi, (almost) smooth supersolutions for the Hamilton-Jacobi-Bellman equation. 1. Introduction This paper

  17. AN ADAPTIVE METHOD WITH RIGOROUS ERROR CONTROL FOR THE HAMILTON-JACOBI EQUATIONS.

    E-Print Network [OSTI]

    AN ADAPTIVE METHOD WITH RIGOROUS ERROR CONTROL FOR THE HAMILTON-JACOBI EQUATIONS. PART II: THE TWO adaptive method with rigorous error control for the Hamilton-Jacobi equations. Part II: The two and study an adaptive method for finding approximations to the viscosity solution of Hamilton-Jacobi

  18. PROBABILITY OF ERROR FOR TRAINED UNITARY SPACE-TIME MODULATION OVER A

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    PROBABILITY OF ERROR FOR TRAINED UNITARY SPACE-TIME MODULATION OVER A GAUSS-INNOVATIONS RICIAN probability of error for trained uni- tary space-time modulation over channels with a constant specular trained modulation, assuming that the channel is constant between training periods. All of the above

  19. Characterization of the Impact of Indoor Doppler Errors on Pedestrian Dead Reckoning

    E-Print Network [OSTI]

    Calgary, University of

    Characterization of the Impact of Indoor Doppler Errors on Pedestrian Dead Reckoning Valérie, University of Calgary 2500 University Drive NW Calgary, Alberta, Canada, T2N 1N4 Abstract--Indoor pedestrian on a Pedestrian Dead Reckoning (PDR) navigation filter is investigated. Doppler errors are simulated using

  20. IEEE SENSORS JOURNAL, VOL. 3, NO. 5, OCTOBER 2003 595 Active Structural Error Suppression in MEMS

    E-Print Network [OSTI]

    Chen, Zhongping

    -run perturbations are presented. Index Terms--Error suppression, microelectromechanical sys- tems (MEMS), rate integrating gyroscopes, smart MEMS. I. INTRODUCTION AS MICROELECTROMECHANICAL systems (MEMS) inertial sensorsIEEE SENSORS JOURNAL, VOL. 3, NO. 5, OCTOBER 2003 595 Active Structural Error Suppression in MEMS