National Library of Energy BETA

Sample records for learning effects calculation

  1. Spurious Effects in perturbative Calculations

    E-Print Network [OSTI]

    M. Hortacsu; B. C. Lutfuoglu

    1998-12-11

    We show spurious effects in perturbative calculations due to different orderings of inhomogeneous terms while computing corrections to Green functions for two different metrics. These effects are not carried over to physically measurable quantities like the renormalized value of the vacuum expectation value of the stress-energy tensor.

  2. Machine learning of parameters for accurate semiempirical quantum chemical calculations

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

    Dral, Pavlo O.; von Lilienfeld, O. Anatole; Argonne National Lab.; Thiel, Walter

    2015-04-14

    We investigate possible improvements in the accuracy of semiempirical quantum chemistry (SQC) methods through the use of machine learning (ML) models for the parameters. For a given class of compounds, ML techniques require sufficiently large training sets to develop ML models that can be used for adapting SQC parameters to reflect changes in molecular composition and geometry. The ML-SQC approach allows the automatic tuning of SQC parameters for individual molecules, thereby improving the accuracy without deteriorating transferability to molecules with molecular descriptors very different from those in the training set. The performance of this approach is demonstrated for the semiempiricalmore »OM2 method using a set of 6095 constitutional isomers C7H10O2, for which accurate ab initio atomization enthalpies are available. The ML-OM2 results show improved average accuracy and a much reduced error range compared with those of standard OM2 results, with mean absolute errors in atomization enthalpies dropping from 6.3 to 1.7 kcal/mol. They are also found to be superior to the results from specific OM2 reparameterizations (rOM2) for the same set of isomers. The ML-SQC approach thus holds promise for fast and reasonably accurate high-throughput screening of materials and molecules.« less

  3. Effect of gis learning on spatial ability 

    E-Print Network [OSTI]

    Lee, Jong Won

    2006-08-16

    This research used a spatial skills test and cognitive-mapping test to examine the effect of GIS learning on the spatial ability and spatial problem solving of college students. A total of 80 participants, undergraduate students at Texas A...

  4. Cost-effective Lighting Retrofits: Lessons Learned 

    E-Print Network [OSTI]

    Fisher, M. D.

    1994-01-01

    -effective Lighting Retrofits: Lessons Learned Mark D. Fisher Certified Lighting Efficiency Professional Johnson Controls Dallas, Texas ABSTRACT Facility managers and energy engineers contemplating a lighting retrofit are confronted with a confusing array...

  5. RESEARCH PAPER Calculating the effective permeability of sandstone with

    E-Print Network [OSTI]

    Borja, Ronaldo I.

    RESEARCH PAPER Calculating the effective permeability of sandstone with multiscale lattice microtomo- graphic images of a sandstone, with sample resolution of 3.34 lm. We discuss the predictive

  6. Stimulus exposure effects in human associative learning

    E-Print Network [OSTI]

    Gluck, Mark

    Stimulus exposure effects in human associative learning Catherine E. Myers Rutgers University, Newark, NJ, U.S.A. Lindsay M. Oliver Glasgow Caledonian University, Glasgow, U.K. Stacey G. Warren should be sent to Catherine E. Myers, Department of Psychology, Rutgers University, Newark, NJ 07102, U

  7. Fully microscopic shell-model calculations with realistic effective hamiltonians

    E-Print Network [OSTI]

    L. Coraggio; A. Covello; A. Gargano; N. Itaco; T. T. S. Kuo

    2011-01-24

    The advent of nucleon-nucleon potentials derived from chiral perturbation theory, as well as the so-called V-low-k approach to the renormalization of the strong short-range repulsion contained in the potentials, have brought renewed interest in realistic shell-model calculations. Here we focus on calculations where a fully microscopic approach is adopted. No phenomenological input is needed in these calculations, because single-particle energies, matrix elements of the two-body interaction, and matrix elements of the electromagnetic multipole operators are derived theoretically. This has been done within the framework of the time-dependent degenerate linked-diagram perturbation theory. We present results for some nuclei in different mass regions. These evidence the ability of realistic effective hamiltonians to provide an accurate description of nuclear structure properties.

  8. Calculations of multiquark functions in effective models of strong interaction

    SciTech Connect (OSTI)

    Jafarov, R. G., E-mail: raufjafarov@bsu.az [Institute for Physical Problems of Baku State University (Azerbaijan); Rochev, V. E. [Institute of High Energy Physics, Theoretical Division (Russian Federation)] [Institute of High Energy Physics, Theoretical Division (Russian Federation)

    2013-09-15

    In this paper we present our results of the investigation of multiquark equations in the Nambu-Jona-Lasinio model with chiral symmetry of SU(2) group in the mean-field expansion. To formulate the mean-field expansion we have used an iteration scheme of solution of the Schwinger-Dyson equations with the fermion bilocal source. We have considered the equations for Green functions of the Nambu-Jona-Lasinio model up to third step for this iteration scheme. To calculate the high-order corrections to the mean-field approximation, we propose the method of the Legendre transformation with respect to the bilocal source, which allows effectively to take into account the symmetry constraints related with the chiral Ward identity. We discuss also the problem of calculating the multiquark functions in the mean-field expansion for Nambu-Jona-Lasinio-type models with other types of the multifermion sources.

  9. Analytical calculation of neutral transport and its effect on ions

    SciTech Connect (OSTI)

    Calvin, M.D.; Hazeltine, R.D.; Valanju, P.M.; Solano, E.R. (Texas Univ., Austin, TX (USA). Inst. for Fusion Studies Texas Univ., Austin, TX (USA). Fusion Research Center)

    1991-06-01

    We analytically calculate the neutral particle distribution and its effects on ion heat and momentum transport in three-dimensional plasmas with arbitrary temperature and density profiles. A general variational principle taking advantage of the simplicity of the charge-exchange (CX) operator is derived to solve self-consistently the neutral-plasma interaction problem. To facilitate an extremal solution, we use the short CX mean-free-path ({lambda}{sub x}) ordering. Further, a non-variational, analytical solution providing a full set of transport coefficient is derived by making the realistic assumption that the product of the CX cross section with relative velocity is constant. The effects of neutrals on plasma energy loss and rotation appear in simple, sensible forms. We find that neutral viscosity dominates ion viscosity everywhere, and in the edge region by a large factor. 13 refs.

  10. Effective Neuronal Learning with Ineffective Hebbian Learning Rules

    E-Print Network [OSTI]

    Chechik, Gal

    ; Palm & Sommer, 1996) derived the learn- ing rule that maximizes the network memory capacity, and showed of papers (Palm & Sommer, 1988; Palm, 1992; Palm & Sommer, 1996), Palm and Sommer have further studied

  11. Excited State Effects in Nucleon Matrix Element Calculations

    SciTech Connect (OSTI)

    Constantia Alexandrou, Martha Constantinou, Simon Dinter, Vincent Drach, Karl Jansen, Theodoros Leontiou, Dru B Renner

    2011-12-01

    We perform a high-statistics precision calculation of nucleon matrix elements using an open sink method allowing us to explore a wide range of sink-source time separations. In this way the influence of excited states of nucleon matrix elements can be studied. As particular examples we present results for the nucleon axial charge g{sub A} and for the first moment of the isovector unpolarized parton distribution x{sub u-d}. In addition, we report on preliminary results using the generalized eigenvalue method for nucleon matrix elements. All calculations are performed using N{sub f} = 2+1+1 maximally twisted mass Wilson fermions.

  12. F&WL 501 -Lab #2 Stochastic Exponential Growth 1. In Chapter 2, you learned of the formula for calculating the geometric mean based on

    E-Print Network [OSTI]

    Rotella, Jay J.

    F&WL 501 - Lab #2 ­ Stochastic Exponential Growth 1. In Chapter 2, you learned of the formula for calculating the geometric mean based on an arithmetic mean and its variance. a. What is that formula? b. What is the name of the technique being used in this formula? c. Use that formula to generate values

  13. Analytic calculations of trial wave functions of the fractional quantum Hall effect on the sphere

    E-Print Network [OSTI]

    Carmem Lucia de Souza Batista; Dingping Li

    1996-07-24

    We present a framework for the analytic calculations of the hierarchical wave functions and the composite fermion wave functions in the fractional quantum Hall effect on the sphere by using projective coordinates. Then we calculate the overlaps between these two wave functions at various fillings and small numbers of electrons. We find that the overlaps are all most equal to one. This gives a further evidence that two theories of the fractional quantum Hall effect, the hierarchical theory and the composite fermion theory, are physically equivalent.

  14. The interactive effects of individual learning style, computer software, and teacher involvement on developing typing skill 

    E-Print Network [OSTI]

    Goodman, Sarina Renae

    1995-01-01

    This research examines the effects and interactions of an individual's learning style, the type of computer software, and the level of teacher involvement on students learning how to type on a computer keyboard. The research ...

  15. Multiconfigurational nuclear-electronic orbital approach: Incorporation of nuclear quantum effects in electronic structure calculations

    E-Print Network [OSTI]

    Hammes-Schiffer, Sharon

    Multiconfigurational nuclear-electronic orbital approach: Incorporation of nuclear quantum effects 26 March 2002; accepted 30 May 2002 The nuclear-electronic orbital NEO method for the calculation of mixed nuclear-electronic wave functions is presented. Both electronic and nuclear molecular orbitals

  16. Effect of tensile strain on the electronic structure of Ge: A first-principles calculation

    SciTech Connect (OSTI)

    Liu, Li [Key Laboratory for Microstructures and Institute of Materials Science, Shanghai University, Shanghai 200072 (China); State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Zhang, Miao; Di, Zengfeng, E-mail: zfdi@mail.sim.ac.cn, E-mail: shijin.zhao@shu.edu.cn [State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Hu, Lijuan; Zhao, Shi-Jin, E-mail: zfdi@mail.sim.ac.cn, E-mail: shijin.zhao@shu.edu.cn [Key Laboratory for Microstructures and Institute of Materials Science, Shanghai University, Shanghai 200072 (China)

    2014-09-21

    Taking the change of L-point conduction band valley degeneracy under strain into consideration, we investigate the effect of biaxially tensile strain (parallel to the (001), (110), and (111) planes) and uniaxially tensile strain (along the [001], [110], and [111] directions) on the electronic structure of Ge using density functional theory calculations. Our calculation shows that biaxial tension parallel to (001) is the most efficient way to transform Ge into a direct bandgap material among all tensile strains considered. [111]-tension is the best choice among all uniaxial approaches for an indirect- to direct-bandgap transition of Ge. The calculation results, which are further elaborated by bond-orbital approximation, provide a useful guidance on the optical applications of Ge through strain engineering.

  17. Magnetoimpedance effect at the high frequency range for the thin film geometry: Numerical calculation and experiment

    E-Print Network [OSTI]

    M. A. Corrêa; F. Bohn; R. B. da Silva; R. L. Sommer

    2014-11-04

    The magnetoimpedance effect is a versatile tool to investigate ferromagnetic materials, revealing aspects on the fundamental physics associated to magnetization dynamics, broadband magnetic properties, important issues for current and emerging technological applications for magnetic sensors, as well as insights on ferromagnetic resonance effect at non-saturated magnetic states. Here, we perform a theoretical and experimental investigation of the magnetoimpedance effect for the thin film geometry in a wide frequency range. We calculate the longitudinal magnetoimpedance for single layered, multilayered or exchange biased systems from an approach that considers a magnetic permeability model for planar geometry and the appropriate magnetic free energy density for each structure. From numerical calculations and experimental results found in literature, we analyze the magnetoimpedance behavior, and discuss the main features and advantages of each structure. To test the robustness of the approach, we directly compare theoretical results with experimental magnetoimpedance measurements obtained in a wide range of frequencies for an exchange biased multilayered film. Thus, we provide experimental evidence to confirm the validity of the theoretical approach employed to describe the magnetoimpedance in ferromagnetic films, revealed by the good agreement between numerical calculations and experimental results.

  18. Effective and efficient optics inspection approach using machine learning algorithms

    SciTech Connect (OSTI)

    Abdulla, G; Kegelmeyer, L; Liao, Z; Carr, W

    2010-11-02

    The Final Optics Damage Inspection (FODI) system automatically acquires and utilizes the Optics Inspection (OI) system to analyze images of the final optics at the National Ignition Facility (NIF). During each inspection cycle up to 1000 images acquired by FODI are examined by OI to identify and track damage sites on the optics. The process of tracking growing damage sites on the surface of an optic can be made more effective by identifying and removing signals associated with debris or reflections. The manual process to filter these false sites is daunting and time consuming. In this paper we discuss the use of machine learning tools and data mining techniques to help with this task. We describe the process to prepare a data set that can be used for training and identifying hardware reflections in the image data. In order to collect training data, the images are first automatically acquired and analyzed with existing software and then relevant features such as spatial, physical and luminosity measures are extracted for each site. A subset of these sites is 'truthed' or manually assigned a class to create training data. A supervised classification algorithm is used to test if the features can predict the class membership of new sites. A suite of self-configuring machine learning tools called 'Avatar Tools' is applied to classify all sites. To verify, we used 10-fold cross correlation and found the accuracy was above 99%. This substantially reduces the number of false alarms that would otherwise be sent for more extensive investigation.

  19. On Improving the Effectiveness of Open Learning Environments

    E-Print Network [OSTI]

    Conati, Cristina

    specific student difficulties. ACE provides students with a highly-graphical, exploratory learning that support the exploratory behaviour of those students who would otherwise have trouble learning of tutor-controlled environments that monitor and structure the learning process through focused activities

  20. Sex-specific tissue weighting factors for effective dose equivalent calculations

    SciTech Connect (OSTI)

    Xu, X.G. [Rensselaer Polytechnic Inst., Troy, NY (United States); Reece, W.D. [Texas A& M Univ., College Station, TX (United States)

    1996-01-01

    The effective dose equivalent was defined in the International Commission on Radiological Protection Publication 26 in 1977 and later adopted by the U.S. Nuclear REgulatory Commission. To calculate organ doses and effective dose equivalent for external exposures using Monte Carlo simulations, sex-specific anthropomorphic phantoms and sex-specific weighting factors are always employed. This paper presents detailed mathematical derivation of a set of sex-specific tissue weighting factors and the conditions which the weighting factors must satisfy. Results of effective dose equivalent calculations using female and male phantoms exposed to monoenergetic photon beams of 0.08, 0.3, and 1.0 MeV are provided and compared with results published by other authors using different sex-specific weighting factors and phantoms. The results indicate that females always receive higher effective dose equivalent than males for the photon energies and geometries considered and that some published data may be wrong due to mistakes in deriving the sex-specific weighting factors. 17 refs., 2 figs., 2 tabs.

  1. On recent calculations of resonances for the Stark effect in hydrogen

    E-Print Network [OSTI]

    Francisco M. Fernández; Javier Garcia

    2015-05-12

    We show that the resonances of the Stark effect in hydrogen reported in Phys. Rev. A \\textbf{88}, 022509 (2013) are considerably less accurate than the number of digits appear to suggest. In particular, the imaginary part of the lowest resonance is several orders of magnitude greater than it should be. We compare the results of that paper with those provided by the Riccati-Pad\\'{e} method, perturbation theory and an asymptotic expansion for the resonance width. The inaccuracy of those results can be traced back to the lack of precision in the calculation of the matrix elements of the secular equation. We carry out a more accurate calculation with the same method and show that the agreement with earlier results of other authors is greatly improved.

  2. A NEW CALCULATION OF THE IONIZING BACKGROUND SPECTRUM AND THE EFFECTS OF He II REIONIZATION

    SciTech Connect (OSTI)

    Faucher-Giguere, Claude-Andre; Lidz, Adam; Zaldarriaga, Matias; Hernquist, Lars, E-mail: cgiguere@cfa.harvard.ed [Department of Astronomy, Harvard University, Cambridge, MA 02138 (United States)

    2009-10-01

    The ionizing background determines the ionization balance and the thermodynamics of the cosmic gas. It is therefore a fundamental ingredient to theoretical and empirical studies of both the intergalactic medium (IGM) and galaxy formation. We present here a new calculation of its spectrum that satisfies the empirical constraints we recently obtained by combining state-of-the-art luminosity functions and intergalactic opacity measurements. In our preferred model, star-forming galaxies and quasars each contribute substantially to the H I ionizing field at z < 3, with galaxies rapidly overtaking quasars at higher redshifts as quasars become rarer. In addition to our fiducial model, we explore the physical dependences of the calculated background and clarify how recombination emission contributes to the ionization rates. We find that recombinations do not simply boost the ionization rates by the number of re-emitted ionizing photons as many of these rapidly redshift below the ionization edges and have a distribution of energies. A simple analytic model that captures the main effects seen in our numerical radiative transfer calculations is given. Finally, we discuss the effects of He II reionization by quasars on both the spectrum of the ionizing background and on the thermal history of the IGM. In regions that have yet to be reionized, the spectrum is expected to be almost completely suppressed immediately above 54.4 eV, while a background of higher energy ({approx}>0.5 keV) photons permeates the entire universe owing to the frequency dependence of the photoionization cross section. We provide an analytical model of the heat input during He II reionization and its effects on the temperature-density relation.

  3. Effects of Tasks and Glosses on L2 Incidental Vocabulary Learning: Meta-analyses 

    E-Print Network [OSTI]

    Huang, Shu-Fen

    2012-10-19

    This study investigated the effects of output stimulus tasks and glosses on L2 incidental vocabulary learning. Two meta-analytic studies were conducted. The first was intended to provide a systematic statistical synthesis of the effects of output...

  4. First principle calculations of effective exchange integrals: Comparison between SR (BS) and MR computational results

    SciTech Connect (OSTI)

    Yamaguchi, Kizashi; Nishihara, Satomichi; Saito, Toru; Yamanaka, Shusuke; Kitagawa, Yasutaka; Kawakami, Takashi; Yamada, Satoru; Isobe, Hiroshi; Okumura, Mitsutaka

    2015-01-22

    First principle calculations of effective exchange integrals (J) in the Heisenberg model for diradical species were performed by both symmetry-adapted (SA) multi-reference (MR) and broken-symmetry (BS) single reference (SR) methods. Mukherjee-type (Mk) state specific (SS) MR coupled-cluster (CC) calculations by the use of natural orbital (NO) references of ROHF, UHF, UDFT and CASSCF solutions were carried out to elucidate J values for di- and poly-radical species. Spin-unrestricted Hartree Fock (UHF) based coupled-cluster (CC) computations were also performed to these species. Comparison between UHF-NO(UNO)-MkMRCC and BS UHF-CC computational results indicated that spin-contamination of UHF-CC solutions still remains at the SD level. In order to eliminate the spin contamination, approximate spin-projection (AP) scheme was applied for UCC, and the AP procedure indeed corrected the error to yield good agreement with MkMRCC in energy. The CC double with spin-unrestricted Brueckner's orbital (UBD) was furthermore employed for these species, showing that spin-contamination involved in UHF solutions is largely suppressed, and therefore AP scheme for UBCCD removed easily the rest of spin-contamination. We also performed spin-unrestricted pure- and hybrid-density functional theory (UDFT) calculations of diradical and polyradical species. Three different computational schemes for total spin angular momentums were examined for the AP correction of the hybrid (H) UDFT. HUDFT calculations followed by AP, HUDFT(AP), yielded the S-T gaps that were qualitatively in good agreement with those of MkMRCCSD, UHF-CC(AP) and UB-CC(AP). Thus a systematic comparison among MkMRCCSD, UCC(AP) UBD(AP) and UDFT(AP) was performed concerning with the first principle calculations of J values in di- and poly-radical species. It was found that BS (AP) methods reproduce MkMRCCSD results, indicating their applicability to large exchange coupled systems.

  5. Inclusion of nonadiabiatic effects in calculations on vibrational excitation of molecular hydrogen by low-energy electron impact

    E-Print Network [OSTI]

    Morrison, Michael A.

    Inclusion of nonadiabiatic effects in calculations on vibrational excitation of molecular hydrogen by low-energy electron impact S. Mazevet,1 Michael A. Morrison,1, * Olen Boydstun,1 and R. K. Nesbet2 1 dynamics in calculations of low-energy inelastic electron-molecule cross sections. This formalism uses

  6. The Effects of Using a Greedy Factor in Hexapod Gait Learning

    E-Print Network [OSTI]

    Hickey, Timothy J.

    The Effects of Using a Greedy Factor in Hexapod Gait Learning Gary B. Parker and William T. Tarimo of this study are tested on a Cyclic Genetic Algorithm (CGA) used for learning gaits for a hexapod servo in the desired optimal gaits. Keywords- Genetic Algorithm; Cyclic Control; Hexapod; Greedy Selection; Gait

  7. Effectiveness of Concept Maps in Learning from a Computer-Based Instructional Video Resource 

    E-Print Network [OSTI]

    Vural, Omer

    2012-02-14

    The purpose of this study was to investigate the effectiveness of two different concept mapping methods - learner-generated and expert-generated concept mapping - in computer-based video learning. The students’ attitudes toward the use...

  8. Effects of Ethanol on Instrumental Learning And Plasticity Within The Spinal Cord 

    E-Print Network [OSTI]

    Callegari, Keri

    2013-02-04

    Due to its high prevalence as a recreational substance in our society, especially in populations with spinal cord injury (Tate, 1993), it is imperative that we study the relationship between ethanol and its possible effects on instrumental learning...

  9. Motor learning and its sensory effects: time course of perceptual change and its presence with gradual introduction of load

    E-Print Network [OSTI]

    Malfait, Nicole

    Motor learning and its sensory effects: time course of perceptual change and its presence 2012 Mattar AA, Darainy M, Ostry DJ. Motor learning and its sensory effects: time course of perceptual motor and sensory systems. We showed recently that motor learning leads to changes in the sensed

  10. Fundamental Parameters of Nearby Stars from the Comparison with Evolutionary Calculations: Masses, Radii and Effective temperatures

    E-Print Network [OSTI]

    Carlos Allende Prieto; David L. Lambert

    1999-11-02

    The Hipparcos mission has made it possible to constrain the positions of nearby field stars in the colour-magnitude diagram with very high accuracy. These positions can be compared with the predictions of stellar evolutionary calculations to provide information on the basic parameters of the stars: masses, radii, effective temperatures, ages, and chemical composition. The degeneracy between mass, age, and metallicity is not so large as to prevent a reliable estimate of masses, radii and effective temperatures, at least for stars of solar metallicity. The evolutionary models of Bertelli et al. (1994) predict those parameters finely, and furthermore, the applied transformation from the theoretical (log g-Teff) to the observational (Mv-B-V) plane is precise enough to derive radii with an uncertainty of ~ 6%, masses within ~ 8%, and Teffs within ~ 2% for a certain range of the stellar parameters. This is demonstrated by means of comparison with the measurements in eclipsing binaries and the InfraRed Flux Method. The application of the interpolation procedure in the theoretical isochrones to the stars within 100 pc from the Sun observed with Hipparcos provides estimates for 17,219 stars

  11. The effects of digital elevation model resolution on the calculation and predictions of topographic wetness indices.

    SciTech Connect (OSTI)

    Drover, Damion, Ryan

    2011-12-01

    One of the largest exports in the Southeast U.S. is forest products. Interest in biofuels using forest biomass has increased recently, leading to more research into better forest management BMPs. The USDA Forest Service, along with the Oak Ridge National Laboratory, University of Georgia and Oregon State University are researching the impacts of intensive forest management for biofuels on water quality and quantity at the Savannah River Site in South Carolina. Surface runoff of saturated areas, transporting excess nutrients and contaminants, is a potential water quality issue under investigation. Detailed maps of variable source areas and soil characteristics would therefore be helpful prior to treatment. The availability of remotely sensed and computed digital elevation models (DEMs) and spatial analysis tools make it easy to calculate terrain attributes. These terrain attributes can be used in models to predict saturated areas or other attributes in the landscape. With laser altimetry, an area can be flown to produce very high resolution data, and the resulting data can be resampled into any resolution of DEM desired. Additionally, there exist many maps that are in various resolutions of DEM, such as those acquired from the U.S. Geological Survey. Problems arise when using maps derived from different resolution DEMs. For example, saturated areas can be under or overestimated depending on the resolution used. The purpose of this study was to examine the effects of DEM resolution on the calculation of topographic wetness indices used to predict variable source areas of saturation, and to find the best resolutions to produce prediction maps of soil attributes like nitrogen, carbon, bulk density and soil texture for low-relief, humid-temperate forested hillslopes. Topographic wetness indices were calculated based on the derived terrain attributes, slope and specific catchment area, from five different DEM resolutions. The DEMs were resampled from LiDAR, which is a laser altimetry remote sensing method, obtained from the USDA Forest Service at Savannah River Site. The specific DEM resolutions were chosen because they are common grid cell sizes (10m, 30m, and 50m) used in mapping for management applications and in research. The finer resolutions (2m and 5m) were chosen for the purpose of determining how finer resolutions performed compared with coarser resolutions at predicting wetness and related soil attributes. The wetness indices were compared across DEMs and with each other in terms of quantile and distribution differences, then in terms of how well they each correlated with measured soil attributes. Spatial and non-spatial analyses were performed, and predictions using regression and geostatistics were examined for efficacy relative to each DEM resolution. Trends in the raw data and analysis results were also revealed.

  12. Assessing the Effect of Students’ Perceptions on Benefits Received from Participation in Service-Learning 

    E-Print Network [OSTI]

    Goolsby, Tessa Maring

    2011-02-22

    THE EFFECT OF STUDENTS? PERCEPTIONS ON BENEFITS RECEIVED FROM PARTICIPATION IN SERVICE-LEARNING A Thesis by TESSA MARING GOOLSBY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2009 Major Subject: Sociology ASSESSING THE EFFECT OF STUDENTS? PERCEPTIONS ON BENEFITS RECEIVED FROM PARTICIPATION IN SERVICE-LEARNING A Thesis by TESSA MARING GOOLSBY Submitted...

  13. The fast neutron fluence and the activation detector activity calculations using the effective source method and the adjoint function

    SciTech Connect (OSTI)

    Hep, J.; Konecna, A.; Krysl, V.; Smutny, V. [Calculation Dept., Skoda JS plc, Orlik 266, 31606 Plzen (Czech Republic)

    2011-07-01

    This paper describes the application of effective source in forward calculations and the adjoint method to the solution of fast neutron fluence and activation detector activities in the reactor pressure vessel (RPV) and RPV cavity of a VVER-440 reactor. Its objective is the demonstration of both methods on a practical task. The effective source method applies the Boltzmann transport operator to time integrated source data in order to obtain neutron fluence and detector activities. By weighting the source data by time dependent decay of the detector activity, the result of the calculation is the detector activity. Alternatively, if the weighting is uniform with respect to time, the result is the fluence. The approach works because of the inherent linearity of radiation transport in non-multiplying time-invariant media. Integrated in this way, the source data are referred to as the effective source. The effective source in the forward calculations method thereby enables the analyst to replace numerous intensive transport calculations with a single transport calculation in which the time dependence and magnitude of the source are correctly represented. In this work, the effective source method has been expanded slightly in the following way: neutron source data were performed with few group method calculation using the active core calculation code MOBY-DICK. The follow-up neutron transport calculation was performed using the neutron transport code TORT to perform multigroup calculations. For comparison, an alternative method of calculation has been used based upon adjoint functions of the Boltzmann transport equation. Calculation of the three-dimensional (3-D) adjoint function for each required computational outcome has been obtained using the deterministic code TORT and the cross section library BGL440. Adjoint functions appropriate to the required fast neutron flux density and neutron reaction rates have been calculated for several significant points within the RPV and RPV cavity of the VVER-440 reacto rand located axially at the position of maximum power and at the position of the weld. Both of these methods (the effective source and the adjoint function) are briefly described in the present paper. The paper also describes their application to the solution of fast neutron fluence and detectors activities for the VVER-440 reactor. (authors)

  14. From non-Hermitian effective operators to large-scale no-core shell model calculations for light nuclei

    E-Print Network [OSTI]

    Bruce R. Barrett; Ionel Stetcu; Petr Navratil; James P. Vary

    2006-03-10

    No-core shell model (NCSM) calculations using ab initio effective interactions are very successful in reproducing experimental nuclear spectra. The main theoretical approach is the use of effective operators, which include correlations left out by the truncation of the model space to a numerically tractable size. We review recent applications of the effective operator approach, within a NCSM framework, to the renormalization of the nucleon-nucleon interaction, as well as scalar and tensor operators.

  15. THE EFFECTS OF FILAMENT MAGNETIZATION IN SUPERCONDUCTING MAGNETS AS CALCULATED BY POISSION

    E-Print Network [OSTI]

    Caspi, S.

    2010-01-01

    29·0ctober 3, 1986 THE EFFECTS OF FILAMENT MAGNETIZATION IN244 THE EFFECTS OF FILAMENT MAGNETIZATION IN SUPERCONDUCTING

  16. Hispanic Students' Perceptions of the Effectiveness of Learning Communities: A Case Study of First-Year University Students 

    E-Print Network [OSTI]

    Kazen, Hayley D.

    2010-01-15

    This study focused on the perceptions students have about the effectiveness of learning communities, a focus of the First-Year Success initiative at Texas A

  17. Investigating the effects of everyday memory failures, transliminality, cognitive thinking styles and implicit learning on reported precognitive dream experience. 

    E-Print Network [OSTI]

    Nuttall, Rachel

    2013-07-02

    ?This study investigates the effects of everyday memory failures, implicit learning, cognitive thinking styles and transliminality on reported precognitive dream experience and belief. Previous research has linked everyday ...

  18. Effects of residual stress on the thin-film elastic moduli calculated from surface acoustic wave spectroscopy experimentsB

    E-Print Network [OSTI]

    Effects of residual stress on the thin-film elastic moduli calculated from surface acoustic wave stress affects the values of thin-film elastic moduli determined from surface acoustic wave spectroscopy surface acoustic wave measurements may be analyzed to obtain additional information about the mechanical

  19. Effects of Mid-Sagittal Plane Perturbation and Image Interpolation on Corpus Callosum Area Calculation

    E-Print Network [OSTI]

    Hamarneh, Ghassan

    communication. In multiple sclerosis (MS), the CC can have discrete lesions (MS plaques) or generalized tissue callo- sum, multiple sclerosis, mid sagittal plane, area calculation. I. INTRODUCTION The CC and the MS in the nerve impulses. B. Multiple Sclerosis Multiple Sclerosis is an auto-immune disease of the brain

  20. Calculation of Doublet Capture Rate for Muon Capture in Deuterium within Chiral Effective Field Theory

    E-Print Network [OSTI]

    J. Adam, Jr.; M. Tater; E. Truhlik; E. Epelbaum; R. Machleidt; P. Ricci

    2012-01-31

    The doublet capture rate of the negative muon capture in deuterium is calculated employing the nuclear wave functions generated from accurate nucleon-nucleon potentials constructed at next-to-next-to-next-to-leading order of heavy-baryon chiral perturbation theory and the weak meson exchange current operator derived within the same formalism. All but one of the low-energy constants that enter the calculation were fixed from pion-nucleon and nucleon-nucleon scattering data. The low-energy constant d^R (c_D), which cannot be determined from the purely two-nucleon data, was extracted recently from the triton beta-decay and the binding energies of the three-nucleon systems. The calculated values of the doublet capture rates show a rather large spread for the used values of the d^R. Precise measurement of the doublet capture rate in the future will not only help to constrain the value of d^R, but also provide a highly nontrivial test of the nuclear chiral EFT framework. Besides, the precise knowledge of the constant d^R will allow for consistent calculations of other two-nucleon weak processes, such as proton-proton fusion and solar neutrino scattering on deuterons, which are important for astrophysics.

  1. Vibrational Spectra of Water Solutions of Azoles from QM/MM Calculations: Effects of Solvation

    E-Print Network [OSTI]

    Guidoni, Leonardo

    the decomposition of the vibrational density of states of the gas phase and solution dynamics. The calculated shifts the structural and dynamical aspects of water solutions. X-ray as well as neutron diffraction are the main source and electronic structure of the molecule.1 We expect therefore that also its vibrational properties could

  2. Application of a generalized matrix averaging method for the calculation of the effective properties of thin multiferroic layers

    SciTech Connect (OSTI)

    Starkov, A. S. [St. Petersburg National Research University of Information Technologies, Mechanics and Optics, Institute of Refrigeration and Biotechnology (Russian Federation); Starkov, I. A., E-mail: ferroelectrics@ya.ru [Brno University of Technology, SIX Research Centre (Czech Republic)

    2014-11-15

    It is proposed to use a generalized matrix averaging (GMA) method for calculating the parameters of an effective medium with physical properties equivalent to those of a set of thin multiferroic layers. This approach obviates the need to solve a complex system of magnetoelectroelasticity equations. The required effective characteristics of a system of multiferroic layers are obtained using only operations with matrices, which significantly simplifies calculations and allows multilayer systems to be described. The proposed approach is applicable to thin-layer systems, in which the total thickness is much less than the system length, radius of curvature, and wavelengths of waves that can propagate in the system (long-wave approximation). Using the GMA method, it is also possible to obtain the effective characteristics of a periodic structure with each period comprising a number of thin multiferroic layers.

  3. Motivating effective use of online components by students in flipped/blended learning formats

    E-Print Network [OSTI]

    Collins, Gary S.

    Motivating effective use of online components by students in flipped/blended learning formats Tom the online components of a course, particularly in use with flipped/blended course formats. What I present's my take on flipped/blended formats exclusively: The Challenge In my experience, the most challenging

  4. Temperature effects on the energy bandgap and conductivity effective masses of charge carriers in lead telluride from first-principles calculations

    SciTech Connect (OSTI)

    Venkatapathi, S., E-mail: saran@vt.edu; Dong, B., E-mail: bind89@vt.edu [Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States); Hin, C., E-mail: celhin@vt.edu [Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States); Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States)

    2014-07-07

    We determined the temperature effects on the electronic properties of lead telluride (PbTe) such as the energy bandgap and the effective masses of charge carriers by incorporating the structural changes of the material with temperature using ab-initio density functional theory (DFT) calculations. Though the first-principles DFT calculations are done at absolute zero temperatures, by incorporating the lattice thermal expansion and the distortion of Pb{sup 2+} ions from the equilibrium positions, we could determine the stable structural configuration of the PbTe system at different temperatures.

  5. Overview of Fluence to Dose Conversion Coefficients for High Energy Radiations - Calculational Methods and Results of Two Kinds of Effective Dose per Unit Particle Fluence

    E-Print Network [OSTI]

    Iwai, S; Sato, O; Yoshizawa, N; Furihata, S; Takagi, S; Tanaka, S; Sakamoto, Y

    2000-01-01

    Overview of Fluence to Dose Conversion Coefficients for High Energy Radiations - Calculational Methods and Results of Two Kinds of Effective Dose per Unit Particle Fluence

  6. A Calculation on the Self-field of a Point Charge and the Unruh Effect

    E-Print Network [OSTI]

    T. Hirayama; T. Hara

    2000-07-24

    Within the context of quantum field theory in curved spacetimes, Hacyan and Sarmiento defined the vacuum stress-energy tensor with respect to the accelerated observer. They calculated it for uniform acceleration and circular motion, and derived that the rotating observer perceives a flux. Mane related the flux to synchrotron radiation. In order to investigate the relation between the vacuum stress and bremsstrahlung, we estimate the stress-energy tensor of the electromagnetic field generated by a point charge, at the position of the charge. We use the retarded field as a self-field of the point charge. Therefore the tensor diverges if we evaluate it as it is. Hence we remove the divergent contributions by using the expansion of the tensor in powers of the distance from the point charge. Finally, we take an average for the angular dependence of the expansion. We calculate it for the case of uniform acceleration and circular motion, and it is found that the order of the vacuum stress multiplied by $\\pi\\alpha$ ($\\alpha=e^2/\\hbar c$ is the fine structure constant) is equal to that of the self-stress. In the Appendix, we give another trial approach with a similar result.

  7. New Method for Calculating the Absolute Free Energy of Binding: The Effect of a Mobile Loop on the Avidin/Biotin Complex

    E-Print Network [OSTI]

    Meirovitch, Hagai

    New Method for Calculating the Absolute Free Energy of Binding: The Effect of a Mobile Loop energy and entropy. HSMD is extended here for the first time for calculating the absolute free energy change to the total free energy of binding is calculated here for the first time. Our result, A0 ) -24

  8. Journal of Machine Learning Research 10 (2009) 857-882 Submitted 5/08; Revised 1/09; Published 4/09 Stable and Efficient Gaussian Process Calculations

    E-Print Network [OSTI]

    2009-01-01

    Journal of Machine Learning Research 10 (2009) 857-882 Submitted 5/08; Revised 1/09; Published 4 ASHOK@EMAIL.ARC.NASA.GOV NASA Ames Research Center Intelligent Systems Division, MS 269-4 Moffett Field approach to prediction in a supervised learning environment. For large data sets, the standard Gaussian

  9. Scaffolding and Enhancing Learners’ Self-Regulated Learning: Testing the Effects of Online Video-Based Interactive Learning Environment on Learning Outcomes 

    E-Print Network [OSTI]

    Delen, Erhan

    2013-07-11

    in traditional education settings may transfer and become enacted as specific learning behaviors in the online learning environment. Finally, the use of embedded self-regulatory functions did not have a significantly unique contribution to students’ performance...

  10. Application of kinetic isotope effects and theoretical calculations to interesting reaction mechanisms 

    E-Print Network [OSTI]

    Hirschi, Jennifer Sue

    2009-05-15

    A variety of biological and organic reaction mechanisms are studied using powerful tools from experimental and theoretical chemistry. These tools include the precise measurement of kinetic isotope effects (KIEs) and the ...

  11. Calculation of rotordynamic unbalance response including torque and cross-coupled stiffness and damping effects 

    E-Print Network [OSTI]

    Kleespies, Henry Sattoli

    1986-01-01

    code was developed using the transfer matrix method to investigate the effects of cross-coupled sti ffness, cross-coupled damping, and torque on synchronous response of rotating machinery. Several models showing the effects of cross.... Phase plot of rotor with ZX damping. Figure 3 1. Response plot for rotor with forward driving cross-coupled stiffness. Figure 32. Response plot with cross-coupled 53 55 57 sti ffness negating lateral damping. Figure 33. Response plot with cross...

  12. A technique for calculating the effective thermal resistance of steel stud walls for code compliance

    SciTech Connect (OSTI)

    Brown, W.C.; Swinton, M.C.; Haysom, J.C. [National Research Council, Ottawa, Ontario (Canada)

    1998-12-31

    Canada`s Model National Energy Codes for Houses and for Buildings contain prescriptive requirements in the form of minimum thermal characteristics of envelope assemblies, including steel stud walls. To assist in the uniform enforcement of these requirements, it was necessary for the codes to prescribe acceptable methods of calculating the thermal resistance of steel and assemblies. The ASHRAE Handbook--Fundamentals proposes a simple method for predicting the thermal performance of stud walls, which is based on a weighted average of the values predicted by isothermal planes and parallel path calculation methods. The thermal resistance of 2440 mm x 2440 mm (8 ft x 8 ft) wall specimens, with 92 mm (3-5/8 in.) steel studs, was measured in a series of guarded hot box tests. Two stud gauges were evaluated, as well as two stud spacings, with one wood-based and three insulating sheathings. The measurements demonstrated that a weighting of 2:1 (isothermal planes:parallel path) provided an/ accurate prediction of the thermal resistance of walls with steel studs at 406 mm (16 in.) o.c., but that a 1:1 weighting best predicted the thermal resistance of walls with steel studs at 610 mm (24 in.) o.c. These results applied to walls with wood-based sheathing directly applied to the studs, whether or not the walls had insulating sheathing. Finally, the measurements demonstrated that an intermediate weighting of 3:2 best predicted the thermal resistance of walls with insulating sheathing installed directly onto the studs, i.e., without intermediate structural sheathing.

  13. PHYSICAL REVIEW B 91, 165124 (2015) First-principles calculation of the bulk photovoltaic effect in KNbO3 and (K,Ba)(Ni,Nb)O3-

    E-Print Network [OSTI]

    Rappe, Andrew M.

    2015-01-01

    to the material's conduction band (CB) for electricity generation or catalysis [2­4]. However, the photoexcitedPHYSICAL REVIEW B 91, 165124 (2015) First-principles calculation of the bulk photovoltaic effect,Ba)(Ni,Nb)O3- and KNbO3 by calculating the shift current from first principles. The effects of structural phase

  14. Highly accurate calculation of the resonances in the Stark effect in hydrogen

    E-Print Network [OSTI]

    Francisco M Fernández; Javier Garcia

    2015-06-18

    We obtained accurate resonances for the Stark effect in hydrogen by means of three independent methods. Two of them are based on complex rotation of the coordinates and diagonalization of the Hamiltonian matrix (CRLM and CRCH). The other one is based on the Riccati equations for the logarithmic derivatives of factors of the wavefunction (RPM). The latter approach enabled us to obtain the most accurate results and extremely sharp resonances.

  15. A two equation method for calculating downhole dynamometer cards with a study of damping effects 

    E-Print Network [OSTI]

    Bastian, Michael John

    1989-01-01

    production. l Because of the wide application of sucker rod pumping as a means for artificially lifting wells, there is potential to significantly effect income and reserves by proper design and maintenance of sucker rod systems. The purpose... was technically successful there existed problems. The cost of installing and removing the tool limited its use solely to research. There also existed a problem with accurately obtaining positions at the pump. W. E. Synder6 was the first to present a...

  16. Calculator Policy

    E-Print Network [OSTI]

    charlotb

    2015-06-10

    MA 15300Y Calculator Policy. ONLY a computer desktop calculator in scientific view is allowed on exams. If you have questions, please email the course ...

  17. Calculator Policy

    E-Print Network [OSTI]

    charlotb

    2015-08-21

    MA 15300 Calculator Policy. ONLY a TI-30Xa scientific calculator is allowed on quizzes and exams. If you have questions, please email the course coordinator ...

  18. Effects of Implicit Power Motivation on Men's and Women's Implicit Learning and Testosterone Changes After Social Victory or Defeat

    E-Print Network [OSTI]

    Schultheiss, Oliver C.

    Effects of Implicit Power Motivation on Men's and Women's Implicit Learning and Testosterone interactions of implicit power motivation and experimentally varied victory or defeat in a contest on implicit-reported affect. In men and women, power motivation predicted enhanced learning (sequence-execution accuracy

  19. Test-Enhanced Learning in a Middle School Science Classroom: The Effects of Quiz Frequency and Placement

    E-Print Network [OSTI]

    McDermott, Kathleen

    Test-Enhanced Learning in a Middle School Science Classroom: The Effects of Quiz Frequency Typically, teachers use tests to evaluate students' knowledge acquisition. In a novel experimental study, we examined whether low-stakes testing (quizzing) can be used to foster students' learning of course content

  20. Ballistic electron transport calculation of strained germanium-tin fin field-effect transistors

    SciTech Connect (OSTI)

    Lan, H.-S.; Liu, C. W.

    2014-05-12

    The dependence of ballistic electron current on Sn content, sidewall orientations, fin width, and uniaxial stress is theoretically studied for the GeSn fin field-effect transistors. Alloying Sn increases the direct ? valley occupancy and enhances the injection velocity at virtual source node. (112{sup ¯}) sidewall gives the highest current enhancement due to the rapidly increasing ? valley occupancy. The non-parabolicity of the ? valley affects the occupancy significantly. However, uniaxial tensile stress and the shrinkage of fin width reduce the ? valley occupancy, and the currents are enhanced by increasing occupancy of specific indirect L valleys with high injection velocity.

  1. Quantum Mechanical Calculations of Charge Effects on gating the KcsA channel

    SciTech Connect (OSTI)

    Kariev, Alisher M.; Znamenskiy, Vasiliy S.; Green, Michael E.

    2007-02-06

    The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. A series of ab initio (density functional) calculations were carried out on side chains of a set of amino acids, plus water, from the (intracellular) gating region of the KcsA K+ channel. Their atomic coordinates, except hydrogen, are known from X-ray structures [D.A. Doyle, J.M. Cabral, R.A. Pfuetzner, A. Kuo, J.M. Gulbis, S.L. Cohen, B.T. Chait, R. MacKinnon, The structure of the potassium channel: molecular basis of K+ conduction and selectivity, Science 280 (1998) 69–77; R. MacKinnon, S.L. Cohen, A. Kuo, A. Lee, B.T. Chait, Structural conservation in prokaryotic and eukaryotic potassium channels, Science 280 (1998) 106–109; Y. Jiang, A. Lee, J. Chen, M. Cadene, B.T. Chait, R. MacKinnon, The open pore conformation of potassium channels. Nature 417 (2001) 523–526], as are the coordinates of some water oxygen atoms. The 1k4c structure is used for the starting coordinates. Quantum mechanical optimization, in spite of the starting configuration, places the atoms in positions much closer to the 1j95, more tightly closed, configuration. This state shows four water molecules forming a “basket” under the Q119 side chains, blocking the channel. When a hydrated K+ approaches this “basket”, the optimized system shows a strong set of hydrogen bonds with the K+ at defined positions, preventing further approach of the K+ to the basket. This optimized structure with hydrated K+ added shows an ice-like 12 molecule nanocrystal of water. If the water molecules exchange, unless they do it as a group, the channel will remain blocked. The “basket” itself appears to be very stable, although it is possible that the K+ with its hydrating water molecules may be more mobile, capable of withdrawing from the gate. It is also not surprising that water essentially freezes, or forms a kind of glue, in a nanometer space; this agrees with experimental results on a rather different, but similarly sized (nm dimensions) system [K.B. Jinesh, J.W.M. Frenken, Capillary condensation in atomic scale friction: how water acts like a glue, Phys. Rev. Lett. 96 (2006) 166103/1–4].

  2. The Relative Effectiveness of Positive Interdependence and Group Processing on Student Achievement, Interaction, and Attitude in Online Cooperative Learning 

    E-Print Network [OSTI]

    Nam, Chang Woo

    2010-01-14

    The purpose of this study was to investigate the relative effectiveness of positive interdependence and group processing on student achievement, interaction, and attitude in online cooperative learning. All of the participants, ...

  3. Effect of a detailed radial core expansion reactivity feedback model on ATWS calculations using SASSYS/SAS4A

    SciTech Connect (OSTI)

    Wigeland, R.A.

    1986-01-01

    The present emphasis on inherent safety and inherently safe designs for liquid-metal reactors has resulted in a need to represent the various reactivity feedback mechanisms as accurately as possible. In particular, the reactivity feedback from radial core expansion has been found to provide the dominant negative feedback contribution in postulated anticipated transient without scram (ATWS) events. Review of the existing modeling in the SASSYS/SAS4A computer code system revealed that while the modeling may be adequate for the early phases of various unprotected transients, the accuracy would be less than desirable for the extended transients which typically occur for inherently safe designs. The existing model for calculating the reactivity feedback from radial core expansion uses a feedback from radial core expansion uses a feedback coefficient in conjunction with changes in the temperatures of the grid support plate and the above-core load pad. The accuracy of this approach is determined partly by the conditions used in deriving the feedback coefficient, and their relevance to the transient being investigated. Accuracy is also affected by the need to include effects other than those that could be directly related to changes in the grid plate and above-core load pad temperatures, such as subassembly bowing and the potential for clearances to occur between subassemblies in the above-core load pad region. As a result, a detailed model was developed in an attempt to account for these and other effects in a more mechanistic form.

  4. Quantum mechanical calculation of the effects of stiff and rigid constraints in the conformational equilibrium of the Alanine dipeptide

    E-Print Network [OSTI]

    Pablo Echenique; Ivan Calvo; J. L. Alonso

    2006-12-04

    If constraints are imposed on a macromolecule, two inequivalent classical models may be used: the stiff and the rigid one. This work studies the effects of such constraints on the Conformational Equilibrium Distribution (CED) of the model dipeptide HCO-L-Ala-NH2 without any simplifying assumption. We use ab initio Quantum Mechanics calculations including electron correlation at the MP2 level to describe the system, and we measure the conformational dependence of all the correcting terms to the naive CED based in the Potential Energy Surface (PES) that appear when the constraints are considered. These terms are related to mass-metric tensors determinants and also occur in the Fixman's compensating potential. We show that some of the corrections are non-negligible if one is interested in the whole Ramachandran space. On the other hand, if only the energetically lower region, containing the principal secondary structure elements, is assumed to be relevant, then, all correcting terms may be neglected up to peptides of considerable length. This is the first time, as far as we know, that the analysis of the conformational dependence of these correcting terms is performed in a relevant biomolecule with a realistic potential energy function.

  5. Effect of intranasal manganese administration on neurotransmission and spatial learning in rats

    SciTech Connect (OSTI)

    Blecharz-Klin, Kamilla; Piechal, Agnieszka; Joniec-Maciejak, Ilona; Pyrzanowska, Justyna; Widy-Tyszkiewicz, Ewa

    2012-11-15

    The effect of intranasal manganese chloride (MnCl{sub 2}·4H{sub 2}O) exposure on spatial learning, memory and motor activity was estimated in Morris water maze task in adult rats. Three-month-old male Wistar rats received for 2 weeks MnCl{sub 2}·4H{sub 2}O at two doses the following: 0.2 mg/kg b.w. (Mn0.2) or 0.8 mg/kg b.w. (Mn0.8) per day. Control (Con) and manganese-exposed groups were observed for behavioral performance and learning in water maze. ANOVA for repeated measurements did not show any significant differences in acquisition in the water maze between the groups. However, the results of the probe trial on day 5, exhibited spatial memory deficits following manganese treatment. After completion of the behavioral experiment, the regional brain concentrations of neurotransmitters and their metabolites were determined via HPLC in selected brain regions, i.e. prefrontal cortex, hippocampus and striatum. ANOVA demonstrated significant differences in the content of monoamines and metabolites between the treatment groups compared to the controls. Negative correlations between platform crossings on the previous platform position in Southeast (SE) quadrant during the probe trial and neurotransmitter turnover suggest that impairment of spatial memory and cognitive performance after manganese (Mn) treatment is associated with modulation of the serotonergic, noradrenergic and dopaminergic neurotransmission in the brain. These findings show that intranasally applied Mn can impair spatial memory with significant changes in the tissue level and metabolism of monoamines in several brain regions. -- Highlights: ? Intranasal exposure to manganese in rats impairs spatial memory in the water maze. ? Regional changes in levels of neurotransmitters in the brain have been identified. ? Cognitive disorder correlates with modulation of 5-HT, NA and DA neurotransmission.

  6. Atomistic Calculations of the Effect of Minor Actinides on Thermodynamic and Kinetic Properties of UO{sub 2{+-}x}

    SciTech Connect (OSTI)

    Deo, Chaitanya; Adnersson, Davis; Battaile, Corbett; uberuaga, Blas

    2012-10-30

    The team will examine how the incorporation of actinide species important for mixed oxide (MOX) and other advanced fuel designs impacts thermodynamic quantities of the host UO{sub 2} nuclear fuel and how Pu, Np, Cm and Am influence oxygen mobility. In many cases, the experimental data is either insufficient or missing. For example, in the case of pure NpO2, there is essentially no experimental data on the hyperstoichiometric form it is not even known if hyperstoichiometry NpO{sub 2{+-}x} is stable. The team will employ atomistic modeling tools to calculate these quantities

  7. Spin-free Dirac-Coulomb calculations augmented with a perturbative treatment of spin-orbit effects at the Hartree-Fock level

    SciTech Connect (OSTI)

    Cheng, Lan, E-mail: chenglanster@gmail.com [Institute for Theoretical Chemistry, Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Institute for Theoretical Chemistry, Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712 (United States); Stopkowicz, Stella, E-mail: stella.stopkowicz@kjemi.uio.no [Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, N-0315 Oslo (Norway)] [Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, N-0315 Oslo (Norway); Gauss, Jürgen, E-mail: gauss@uni-mainz.de [Institut für Physikalische Chemie, Universität Mainz, D-55099 Mainz (Germany)] [Institut für Physikalische Chemie, Universität Mainz, D-55099 Mainz (Germany)

    2013-12-07

    A perturbative approach to compute second-order spin-orbit (SO) corrections to a spin-free Dirac-Coulomb Hartree-Fock (SFDC-HF) calculation is suggested. The proposed scheme treats the difference between the DC and SFDC Hamiltonian as perturbation and exploits analytic second-derivative techniques. In addition, a cost-effective scheme for incorporating relativistic effects in high-accuracy calculations is suggested consisting of a SFDC coupled-cluster treatment augmented by perturbative SO corrections obtained at the HF level. Benchmark calculations for the hydrogen halides HX, X = F-At as well as the coinage-metal fluorides CuF, AgF, and AuF demonstrate the accuracy of the proposed perturbative treatment of SO effects on energies and electrical properties in comparison with the more rigorous full DC treatment. Furthermore, we present, as an application of our scheme, results for the electrical properties of AuF and XeAuF.

  8. Literacy, linguistics and compositionality: Investigating the effects of cultural systems on learning and language 

    E-Print Network [OSTI]

    Brown, Jessica Erin

    2008-12-04

    Recent linguistic research has shown that cultural processes operating over an extended timescale may be responsible for many aspects of syntax. Other evidence from artificial language learning studies indicates a strong ...

  9. The effect of service-learning in developing leadership life skills 

    E-Print Network [OSTI]

    Stafford, Jill Renee

    2001-01-01

    , and service and reflection. A written questionnaire was used to assess youths' perceived leadership life skills upon completion of the service-learning model. The major findings of the study were as follows: 1) In general, participants believed...

  10. Hydrogen Insertion Effects on the Electronic Structure of Equiatomic MgNi Traced by ab initio Calculations.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Hydrogen Insertion Effects on the Electronic Structure of Equiatomic MgNi Traced by ab initio-xxx / Received October 18, 2012. Doi: 10.5560/ ZNB.2012-xxx For equiatomic MgNi which can be hydrogenated up to the composition MgNiH1.6 at an absorption/desorption temperature of 200 °C, the effects of hydrogen are approached

  11. Effective theory for the non-rigid rotor in an electromagnetic field: Toward accurate and precise calculations of E2 transitions in deformed nuclei

    E-Print Network [OSTI]

    Pérez, E A Coello

    2015-01-01

    We present a model-independent approach to electric quadrupole transitions of deformed nuclei. Based on an effective theory for axially symmetric systems, the leading interactions with electromagnetic fields enter as minimal couplings to gauge potentials, while subleading corrections employ gauge-invariant non-minimal couplings. This approach yields transition operators that are consistent with the Hamiltonian, and the power counting of the effective theory provides us with theoretical uncertainty estimates. We successfully test the effective theory in homonuclear molecules that exhibit a large separation of scales. For ground-state band transitions of rotational nuclei, the effective theory describes data well within theoretical uncertainties at leading order. In order to probe the theory at subleading order, data with higher precision would be valuable. For transitional nuclei, next-to-leading order calculations and the high-precision data are consistent within the theoretical uncertainty estimates. We also...

  12. Effects of strain and quantum confinement in optically pumped nuclear magnetic resonance in GaAs: Interpretation guided by spin-dependent band structure calculations

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

    Wood, R. M.; Saha, D.; McCarthy, L. A.; Tokarski, III, J. T.; Sanders, G. D.; Kuhns, P. L.; McGill, S. A.; Reyes, A. P.; Reno, J. L.; Stanton, C. J.; et al

    2014-10-29

    A combined experimental-theoretical study of optically pumped NMR (OPNMR) has been performed in a GaAs/Al0.1Ga0.9As quantum well film with thermally induced biaxial strain. The photon energy dependence of the Ga-71 OPNMR signal was recorded at magnetic fields of 4.9 and 9.4 T at a temperature of 4.8-5.4 K. The data were compared to the nuclear spin polarization calculated from differential absorption to spin-up and spin-down states of the conduction band using a modified Pidgeon Brown model. Reasonable agreement between theory and experiment is obtained, facilitating assignment of features in the OPNMR energy dependence to specific interband transitions. Despite the approximationsmore »made in the quantum-mechanical model and the inexact correspondence between the experimental and calculated observables, the results provide insight into how effects of strain and quantum confinement are manifested in OPNMR signals« less

  13. Semi-Analytic Calculation of the Gravitational Wave Signal From the Electroweak Phase Transition for General Quartic Scalar Effective Potentials

    E-Print Network [OSTI]

    John Kehayias; Stefano Profumo

    2010-02-24

    Upcoming gravitational wave (GW) detectors might detect a stochastic background of GWs potentially arising from many possible sources, including bubble collisions from a strongly first-order electroweak phase transition. We investigate whether it is possible to connect, via a semi-analytical approximation to the tunneling rate of scalar fields with quartic potentials, the GW signal through detonations with the parameters entering the potential that drives the electroweak phase transition. To this end, we consider a finite temperature effective potential similar in form to the Higgs potential in the Standard Model (SM). In the context of a semi-analytic approximation to the three dimensional Euclidean action, we derive a general approximate form for the tunneling temperature and the relevant GW parameters. We explore the GW signal across the parameter space describing the potential which drives the phase transition. We comment on the potential detectability of a GW signal with future experiments, and physical relevance of the associated potential parameters in the context of theories which have effective potentials similar in form to that of the SM. In particular we consider singlet, triplet, higher dimensional operators, and top-flavor extensions to the Higgs sector of the SM. We find that the addition of a temperature independent cubic term in the potential, arising from a gauge singlet for instance, can greatly enhance the GW power. The other parameters have milder, but potentially noticeable, effects.

  14. Insights on Curriculum, Instruction, and Early Literacy Learning: Student Characteristic by Instruction Interaction Effects on Literacy Outcomes

    E-Print Network [OSTI]

    Rose, Michael R.

    in focusing students' attention on learning activities within grade, from grade Insights on Curriculum, Instruction, and Early Literacy Learning: Student focused on children's learning in the classroom ­ from preschool through third

  15. Effective theory for the non-rigid rotor in an electromagnetic field: Toward accurate and precise calculations of E2 transitions in deformed nuclei

    E-Print Network [OSTI]

    E. A. Coello Pérez; T. Papenbrock

    2015-07-16

    We present a model-independent approach to electric quadrupole transitions of deformed nuclei. Based on an effective theory for axially symmetric systems, the leading interactions with electromagnetic fields enter as minimal couplings to gauge potentials, while subleading corrections employ gauge-invariant non-minimal couplings. This approach yields transition operators that are consistent with the Hamiltonian, and the power counting of the effective theory provides us with theoretical uncertainty estimates. We successfully test the effective theory in homonuclear molecules that exhibit a large separation of scales. For ground-state band transitions of rotational nuclei, the effective theory describes data well within theoretical uncertainties at leading order. In order to probe the theory at subleading order, data with higher precision would be valuable. For transitional nuclei, next-to-leading order calculations and the high-precision data are consistent within the theoretical uncertainty estimates. We also study the faint inter-band transitions within the effective theory and focus on the $E2$ transitions from the $0^+_2$ band (the "$\\beta$ band") to the ground-state band. Here, the predictions from the effective theory are consistent with data for several nuclei, thereby proposing a solution to a long-standing challenge.

  16. Plutonium 239 Equivalency Calculations

    SciTech Connect (OSTI)

    Wen, J

    2011-05-31

    This document provides the basis for converting actual weapons grade plutonium mass to a plutonium equivalency (PuE) mass of Plutonium 239. The conversion can be accomplished by performing calculations utilizing either: (1) Isotopic conversions factors (CF{sub isotope}), or (2) 30-year-old weapons grade conversion factor (CF{sub 30 yr}) Both of these methods are provided in this document. Material mass and isotopic data are needed to calculate PuE using the isotopic conversion factors, which will provide the actual PuE value at the time of calculation. PuE is the summation of the isotopic masses times their associated isotopic conversion factors for plutonium 239. Isotopic conversion factors are calculated by a normalized equation, relative to Plutonium 239, of specific activity (SA) and cumulated dose inhalation affects based on 50-yr committed effective dose equivalent (CEDE). The isotopic conversion factors for converting weapons grade plutonium to PuE are provided in Table-1. The unit for specific activity (SA) is curies per gram (Ci/g) and the isotopic SA values come from reference [1]. The cumulated dose inhalation effect values in units of rem/Ci are based on 50-yr committed effective dose equivalent (CEDE). A person irradiated by gamma radiation outside the body will receive a dose only during the period of irradiation. However, following an intake by inhalation, some radionuclides persist in the body and irradiate the various tissues for many years. There are three groups CEDE data representing lengths of time of 0.5 (D), 50 (W) and 500 (Y) days, which are in reference [2]. The CEDE values in the (W) group demonstrates the highest dose equivalent value; therefore they are used for the calculation.

  17. Quantum Monte Carlo calculations of electromagnetic transitions in $^8$Be with meson-exchange currents derived from chiral effective field theory

    SciTech Connect (OSTI)

    Pastore, S. [University of South Carolina; Wiringa, Robert B. [ANL; Pieper, Steven C. [ANL; Schiavilla, Rocco [Old Dominion U., JLAB

    2014-08-01

    We report quantum Monte Carlo calculations of electromagnetic transitions in $^8$Be. The realistic Argonne $v_{18}$ two-nucleon and Illinois-7 three-nucleon potentials are used to generate the ground state and nine excited states, with energies that are in excellent agreement with experiment. A dozen $M1$ and eight $E2$ transition matrix elements between these states are then evaluated. The $E2$ matrix elements are computed only in impulse approximation, with those transitions from broad resonant states requiring special treatment. The $M1$ matrix elements include two-body meson-exchange currents derived from chiral effective field theory, which typically contribute 20--30\\% of the total expectation value. Many of the transitions are between isospin-mixed states; the calculations are performed for isospin-pure states and then combined with the empirical mixing coefficients to compare to experiment. In general, we find that transitions between states that have the same dominant spatial symmetry are in decent agreement with experiment, but those transitions between different spatial symmetries are often significantly underpredicted.

  18. Effects of strain and quantum confinement in optically pumped nuclear magnetic resonance in GaAs: Interpretation guided by spin-dependent band structure calculations

    SciTech Connect (OSTI)

    Wood, R. M.; Saha, D.; McCarthy, L. A.; Tokarski, III, J. T.; Sanders, G. D.; Kuhns, P. L.; McGill, S. A.; Reyes, A. P.; Reno, J. L.; Stanton, C. J.; Bowers, C. R.

    2014-10-29

    A combined experimental-theoretical study of optically pumped NMR (OPNMR) has been performed in a GaAs/Al0.1Ga0.9As quantum well film with thermally induced biaxial strain. The photon energy dependence of the Ga-71 OPNMR signal was recorded at magnetic fields of 4.9 and 9.4 T at a temperature of 4.8-5.4 K. The data were compared to the nuclear spin polarization calculated from differential absorption to spin-up and spin-down states of the conduction band using a modified Pidgeon Brown model. Reasonable agreement between theory and experiment is obtained, facilitating assignment of features in the OPNMR energy dependence to specific interband transitions. Despite the approximations made in the quantum-mechanical model and the inexact correspondence between the experimental and calculated observables, the results provide insight into how effects of strain and quantum confinement are manifested in OPNMR signals

  19. SU-E-T-510: Mathematical Analysis of Approximate Biological Effective Dose (BED) Calculation for Multi-Phase Radiotherapy Treatment Plans

    SciTech Connect (OSTI)

    Kauweloa, K; Gutierrez, A; Bergamo, A; Stathakis, S; Papanikolaou, N; Mavroidis, P

    2014-06-01

    Purpose: There is growing interest about biological effective dose (BED) and its application in treatment plan evaluation due to its stronger correlation with treatment outcome. An approximate biological effective dose (BEDA) equation was introduced to simplify BED calculations by treatment planning systems in multi-phase treatments. The purpose of this work is to reveal its mathematical properties relative to the true, multi-phase BED (BEDT) equation. Methods: The BEDT equation was derived and used to reveal the mathematical properties of BEDA. MATLAB (MathWorks, Natick, MA) was used to simulate and analyze common and extreme clinical multi-phase cases. In those cases, percent error (Perror) and Bland-Altman analysis were used to study the significance of the inaccuracies of BEDA for different combinations of total doses, numbers of fractions, doses per fractions and ? over ? values. All the calculations were performed on a voxel-basis in order to study how dose distributions would affect the accuracy of BEDA. Results: When the voxel dose-per-fractions (DPF) delivered by both phases are equal, BEDA and BEDT are equal. In heterogeneous dose distributions, which significantly vary between the phases, there are fewer occurrences of equal DPFs and hence the imprecision of BEDA is greater. It was shown that as the ? over ? ratio increased the accuracy of BEDA would improve. Examining twenty-four cases, it was shown that the range of DPF ratios for a 3 Perror varied from 0.32 to 7.50Gy, whereas for Perror of 1 the range varied from 0.50 to 2.96Gy. Conclusion: The DPF between the different phases should be equal in order to render BEDA accurate. OARs typically receive heterogeneous dose distributions hence the probability of equal DPFs is low. Consequently, the BEDA equation should only be used for targets or OARs that receive uniform or very similar dose distributions by the different treatment phases.

  20. Playful calculation : tangible coding for visual calculation

    E-Print Network [OSTI]

    Ham, Derek (Derek Allen)

    2015-01-01

    Play and calculation are often considered to be at odds. Play embraces the wildness of youth, imagination, and a sense of freedom. Calculation, to most, represents rigor, mechanistic behavior, and following inflexible ...

  1. Feedback controller parameterizations for reinforcement learning

    E-Print Network [OSTI]

    Roberts, John William

    Reinforcement Learning offers a very general framework for learning controllers, but its effectiveness is closely tied to the controller parameterization used. Especially when learning feedback controllers for weakly stable ...

  2. The effects of experiential learning with an emphasis on reflective writing on deep-level processing of agricultural leadership students 

    E-Print Network [OSTI]

    Moore, Copie D.

    2010-01-16

    are instrumental in the development of students. Experiential learning, and, more importantly, reflective writing are important components of college instructors? repertoires. Learning is not complete without proper reflection. The purpose of this study...

  3. MACHINE LEARNING REINFORCEMENT LEARNING

    E-Print Network [OSTI]

    Fleuret, François

    only on the current state. 7 / 54 Policy Example For instance, in the maze, here is a policy (an, etc. 2 / 54 #12;Reinforcement Learning Introduction We have seen two large families of machine case, since we have to explore the environment to collect the samples to learn. 3 / 54 Introduction

  4. INFORMATION SECURITY ATTACK TREE MODELING An Effective Approach for Enhancing Student Learning

    E-Print Network [OSTI]

    the engineering principle of Failure Mode and Effect Analysis (FMEA). The main goal of this principle, the project plan can be created more realistically. FMEA techniques [1] help to identify failure potential

  5. Writing and Assessing Learning Outcomes

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Outcomes... Are student-focused Focus on learning resulting from an activity rather than the activity outcomes) to describing effectiveness (Learning outcomes) · Links Student Affairs and Academic Affairs; links curricular and co-curricular #12;Biggest challenges to assessing learning · Students do

  6. R-value Calculator

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

    Advanced Wall Systems ORNL Home ASTM Testing BEP Home Related Sites Work With Us Advanced Wall Systems Home Interactive Calculators New Whole Wall R-value Calculators As A Part Of...

  7. Calculation Complexity and Planning

    E-Print Network [OSTI]

    Cockshott, W.P.

    Cockshott,W.P. Cottrell,A. Socialism and the market: the socialist calculation debate revisited By Peter J. Boettke

  8. Effectiveness of Employing Multimedia Principles in The Design of Computer-Based Math Tutorials for Students with Learning Disabilities

    E-Print Network [OSTI]

    Kanitkar, Anjali Shridhar

    2010-04-28

    This study was designed as an extension of a formative pilot study to enhance the Blending Assessment with Instruction Program (BAIP) developed by the Center for Educational Testing and Evaluation (CETE) and the eLearning ...

  9. Waste Package Lifting Calculation

    SciTech Connect (OSTI)

    H. Marr

    2000-05-11

    The objective of this calculation is to evaluate the structural response of the waste package during the horizontal and vertical lifting operations in order to support the waste package lifting feature design. The scope of this calculation includes the evaluation of the 21 PWR UCF (pressurized water reactor uncanistered fuel) waste package, naval waste package, 5 DHLW/DOE SNF (defense high-level waste/Department of Energy spent nuclear fuel)--short waste package, and 44 BWR (boiling water reactor) UCF waste package. Procedure AP-3.12Q, Revision 0, ICN 0, calculations, is used to develop and document this calculation.

  10. Multiphase flow calculation software

    DOE Patents [OSTI]

    Fincke, James R. (Idaho Falls, ID)

    2003-04-15

    Multiphase flow calculation software and computer-readable media carrying computer executable instructions for calculating liquid and gas phase mass flow rates of high void fraction multiphase flows. The multiphase flow calculation software employs various given, or experimentally determined, parameters in conjunction with a plurality of pressure differentials of a multiphase flow, preferably supplied by a differential pressure flowmeter or the like, to determine liquid and gas phase mass flow rates of the high void fraction multiphase flows. Embodiments of the multiphase flow calculation software are suitable for use in a variety of applications, including real-time management and control of an object system.

  11. MBA in Professional Accounting Program Learning Goals and Objectives

    E-Print Network [OSTI]

    MBA in Professional Accounting Program Learning Goals and Objectives 1. Communication Skills Learning Goal Students graduating with an MBA in Professional Accounting degree will be able to effectively ideas in an understandable manner. 2. Professional Accounting Knowledge Learning Goal Students

  12. Appliance Energy Calculator

    Broader source: Energy.gov [DOE]

    Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage...

  13. quantum scattering calculations

    E-Print Network [OSTI]

    Ihee, Hyotcherl

    in a given quantum state per solid angle unit cross section : integral of the differential cross section) converged integral and differential cross sections geometriquantum scattering calculations on chemical reaction 1st Day #12;schedule day 1. 1.Introduction day

  14. Interactions between learning and decision making

    E-Print Network [OSTI]

    Tulabandhula, Theja

    2014-01-01

    We quantify the effects of learning and decision making on each other in three parts. In the first part, we look at how knowledge about decision making can influence learning. Let the decision cost be the amount spent by ...

  15. Medical physics calculations with MCNP: a primer 

    E-Print Network [OSTI]

    Lazarine, Alexis D

    2006-10-30

    of Medical Internal Radiation Dose (MIRD) specific absorbed fraction (SAF) values using the ORNL MIRD phantom, x-ray phototherapy effectiveness, prostate brachytherapy lifetime dose calculations, and a radiograph of the head using the Zubal head phantom. Also...

  16. Geothermal Life Cycle Calculator

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

    Sullivan, John

    2014-03-11

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOE’s Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  17. Geothermal Life Cycle Calculator

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

    Sullivan, John

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOE’s Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  18. Real-structure effects: Band gaps of Mg_xZn_{1-x}O, Cd_xZn_{1-x}O, and n-type ZnO from ab-initio calculations

    SciTech Connect (OSTI)

    Schleife, A; Bechstedt, F

    2012-02-15

    Many-body perturbation theory is applied to compute the quasiparticle electronic structures and the optical-absorption spectra (including excitonic effects) for several transparent conducting oxides. We discuss HSE+G{sub 0}W{sub 0} results for band structures, fundamental band gaps, and effective electron masses of MgO, ZnO, CdO, SnO{sub 2}, SnO, In{sub 2}O{sub 3}, and SiO{sub 2}. The Bethe-Salpeter equation is solved to account for excitonic effects in the calculation of the frequency-dependent absorption coefficients. We show that the HSE+G{sub 0}W{sub 0} approach and the solution of the Bethe-Salpeter equation are very well-suited to describe the electronic structure and the optical properties of various transparent conducting oxides in good agreement with experiment.

  19. Carbon Footprint Calculator

    Broader source: Energy.gov [DOE]

    This calculator estimates the amount of carbon emissions you and members of your household are responsible for. It does not include emissions associated with your work or getting to work if you commute by public transportation. It was developed by IEEE Spectrum magazine.

  20. Science Learning+: Phase 1 projects Science Learning+

    E-Print Network [OSTI]

    Rambaut, Andrew

    Science Learning+: Phase 1 projects Science Learning+ Phase 1 projects 2 December 2014 #12..............................................................................................................4 Youth access and equity in informal science learning: developing a research and practice agenda..................................................................................................5 Enhancing informal learning through citizen science..............................................6

  1. Critical dose and toxicity index of organs at risk in radiotherapy: Analyzing the calculated effects of modified dose fractionation in non–small cell lung cancer

    SciTech Connect (OSTI)

    Pedicini, Piernicola; Strigari, Lidia; Benassi, Marcello; Caivano, Rocchina; Fiorentino, Alba; Nappi, Antonio; Salvatore, Marco; Storto, Giovanni

    2014-04-01

    To increase the efficacy of radiotherapy for non–small cell lung cancer (NSCLC), many schemes of dose fractionation were assessed by a new “toxicity index” (I), which allows one to choose the fractionation schedules that produce less toxic treatments. Thirty-two patients affected by non resectable NSCLC were treated by standard 3-dimensional conformal radiotherapy (3DCRT) with a strategy of limited treated volume. Computed tomography datasets were employed to re plan by simultaneous integrated boost intensity-modulated radiotherapy (IMRT). The dose distributions from plans were used to test various schemes of dose fractionation, in 3DCRT as well as in IMRT, by transforming the dose-volume histogram (DVH) into a biological equivalent DVH (BDVH) and by varying the overall treatment time. The BDVHs were obtained through the toxicity index, which was defined for each of the organs at risk (OAR) by a linear quadratic model keeping an equivalent radiobiological effect on the target volume. The less toxic fractionation consisted in a severe/moderate hyper fractionation for the volume including the primary tumor and lymph nodes, followed by a hypofractionation for the reduced volume of the primary tumor. The 3DCRT and IMRT resulted, respectively, in 4.7% and 4.3% of dose sparing for the spinal cord, without significant changes for the combined-lungs toxicity (p < 0.001). Schedules with reduced overall treatment time (accelerated fractionations) led to a 12.5% dose sparing for the spinal cord (7.5% in IMRT), 8.3% dose sparing for V{sub 20} in the combined lungs (5.5% in IMRT), and also significant dose sparing for all the other OARs (p < 0.001). The toxicity index allows to choose fractionation schedules with reduced toxicity for all the OARs and equivalent radiobiological effect for the tumor in 3DCRT, as well as in IMRT, treatments of NSCLC.

  2. Embedding Learning Strategies into the Curriculum

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Embedding Learning Strategies into the Curriculum VI VI AN FA YOWSKI BRENDA KOLLER Academic Success can you embed learning strategies into the curriculum? Use your syllabus Build time management skills learning strategies into the curriculum? 2. Tie the textbook to effective note-taking · "Walk through

  3. A Self-regulated Learning Intervention for Developmental Mathematics Students at a Community College: Effects of Study Journals on Achievement and Study Habits 

    E-Print Network [OSTI]

    Travis, Jennifer Lynn

    2014-03-04

    Self-regulated learners continually monitor and adjust the learning process through a recursive loop of forethought, learning enactment, and reflection. The literature review for this study used a systematic approach with ...

  4. CALCULATING THE CARBON FOOTPRINT SUPPLY CHAIN FOR THE

    E-Print Network [OSTI]

    Su, Xiao

    CALCULATING THE CARBON FOOTPRINT SUPPLY CHAIN FOR THE SEMICONDUCTOR INDUSTRY A LEARNING TOOL By a complete supply chain #12;Carbon Footprint Supply Chain Carbon Trust defines carbon footprint of a supply chain as follows: "The carbon footprint of a product is the carbon dioxide emitted across the supply

  5. Zero Temperature Hope Calculations

    SciTech Connect (OSTI)

    Rozsnyai, B F

    2002-07-26

    The primary purpose of the HOPE code is to calculate opacities over a wide temperature and density range. It can also produce equation of state (EOS) data. Since the experimental data at the high temperature region are scarce, comparisons of predictions with the ample zero temperature data provide a valuable physics check of the code. In this report we show a selected few examples across the periodic table. Below we give a brief general information about the physics of the HOPE code. The HOPE code is an ''average atom'' (AA) Dirac-Slater self-consistent code. The AA label in the case of finite temperature means that the one-electron levels are populated according to the Fermi statistics, at zero temperature it means that the ''aufbau'' principle works, i.e. no a priory electronic configuration is set, although it can be done. As such, it is a one-particle model (any Hartree-Fock model is a one particle model). The code is an ''ion-sphere'' model, meaning that the atom under investigation is neutral within the ion-sphere radius. Furthermore, the boundary conditions for the bound states are also set at the ion-sphere radius, which distinguishes the code from the INFERNO, OPAL and STA codes. Once the self-consistent AA state is obtained, the code proceeds to generate many-electron configurations and proceeds to calculate photoabsorption in the ''detailed configuration accounting'' (DCA) scheme. However, this last feature is meaningless at zero temperature. There is one important feature in the HOPE code which should be noted; any self-consistent model is self-consistent in the space of the occupied orbitals. The unoccupied orbitals, where electrons are lifted via photoexcitation, are unphysical. The rigorous way to deal with that problem is to carry out complete self-consistent calculations both in the initial and final states connecting photoexcitations, an enormous computational task. The Amaldi correction is an attempt to address this problem by distorting the outer part of the self-consistent potential in such a way that in the final state after photoexcitation or photoionization the newly occupied orbital sees the hole left in the initial state. This is very important to account for the large number of Rydberg states in the case of low densities. In the next Section we show calculated photoabsorptions compared with experimental data in figures with some rudimentary explanations.

  6. The Effects of Land-Use Regulation on the Price of Housing: What Do We Know? What Can We Learn?

    E-Print Network [OSTI]

    Quigley, John M.; Rosenthal, Larry A.

    2005-01-01

    to S housing can price development licenses to requireany real effect on prices, development patterns, or growth

  7. Learning and Development | Department of Energy

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

    corporate training and development activities. Our goal is to achieve efficient, effective learning and development through evaluation and continuous process improvement efforts....

  8. Better Buildings Residential Network: Lessions Learned: Peer...

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

    similar needs and challenges, and to collectively identify effective strategies and useful resources. Following is a sample of lessons learned shared by members during Peer...

  9. Affect and Engagement in Game-Based Learning Environments

    E-Print Network [OSTI]

    Young, R. Michael

    at regulating their affective experiences during learning [6]. For example, students who are focused on learning Abstract--The link between affect and student learning has been the subject of increasing attention with learning while negative states such as boredom and frustration have the opposite effect. Student engagement

  10. Utility Potential Calculator

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

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

  11. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01

    2.9) DAYLIGHTING CALCULATION IN DOE-2 Table of Contents 1.55 —-17:-.. LBL-11353 (III.2.9 only) EEB-DOE-2 83—3DAYLIGHTING CALCULATION IN DOE-2 Frederick C. Winkelmann

  12. How Are Momentum Savings Calculated?

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

    Simplifying the Math: How Are Momentum Savings Calculated? Many people have heard about Momentum savings but don't understand how these types of savings are calculated. The short...

  13. Application of functional learning to ATPG and design verification for combinational circuits 

    E-Print Network [OSTI]

    Mukherjee, Rajarshim

    1994-01-01

    to detect faults and in detecting redundant faults. Learning techniques have also been effectively applied to the problem of design verification for combinational circuits. This paper presents Functional Learning, a new method of learning, based...

  14. Multipole Electrostatics in Hydration Free Energy Calculations

    E-Print Network [OSTI]

    Ponder, Jay

    Multipole Electrostatics in Hydration Free Energy Calculations YUE SHI,1 CHUANJIE WU,2 JAY W: Hydration free energy (HFE) is generally used for evaluating molecular solubility, which is an important interactions. The effect of long-range correction to van der Waals interaction on the hydration free energies

  15. Mathematics and the less able: a study of learning support 

    E-Print Network [OSTI]

    Farmer, Agnes L.

    This study is concerned with the work of Learning Support and its effect on pupils in the Scottish Secondary School who experience learning difficulties particularly with Mathematics. The case study concentrates on two first year pupils who had been...

  16. Learning Curve

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

    1997-03-28

    It is a fundamental human characteristic that a person engaged in a repetitive task will improve his performance over time. If data are gathered on this phenomenon, a curve representing a decrease in effort per unit for repetitive operations can be developed. This phenomenon is real and has a specific application in cost analysis, cost estimating, or profitability studies related to the examination of future costs and confidence levels in an analysis. This chapter discusses the development and application of the learning curve.

  17. LCEs for Naval Reactor Benchmark Calculations

    SciTech Connect (OSTI)

    W.J. Anderson

    1999-07-19

    The purpose of this engineering calculation is to document the MCNP4B2LV evaluations of Laboratory Critical Experiments (LCEs) performed as part of the Disposal Criticality Analysis Methodology program. LCE evaluations documented in this report were performed for 22 different cases with varied design parameters. Some of these LCEs (10) are documented in existing references (Ref. 7.1 and 7.2), but were re-run for this calculation file using more neutron histories. The objective of this analysis is to quantify the MCNP4B2LV code system's ability to accurately calculate the effective neutron multiplication factor (k{sub eff}) for various critical configurations. These LCE evaluations support the development and validation of the neutronics methodology used for criticality analyses involving Naval reactor spent nuclear fuel in a geologic repository.

  18. Course info Machine Learning

    E-Print Network [OSTI]

    Shi, Qinfeng "Javen"

    Course info Machine Learning Real life problems Lecture 1: Machine Learning Problem Qinfeng (Javen) Shi 28 July 2014 Intro. to Stats. Machine Learning COMP SCI 4401/7401 Qinfeng (Javen) Shi Lecture 1: Machine Learning Problem #12;Course info Machine Learning Real life problems Table of Contents I 1 Course

  19. Scholarship of and Learning

    E-Print Network [OSTI]

    Herbert, Bruce

    is characterized by: A clear focus on student learning. The scholarship of teaching and learning is drivenLeadership for the Scholarship of Teaching and Learning Improve student learning Stimulate and their students learning; many today are trying new classroom approaches in the hopes of strengthening

  20. Evalutating the Effect of an Online Job-Embedded Professional Development Program on Elementary Teachers' Use of Arts Integrated Approaches to Learning in a South Texas School District 

    E-Print Network [OSTI]

    Herrera, Karen

    2013-08-03

    low sense of self efficacy. This study examined how an online professional development program affected elementary teachers’ use of arts approaches, the attitudes and issues that have a bearing on the use of arts approaches, and teacher learning...

  1. Waiting to learn a new use of technology: motivation source and its impact on anticipated effect, time pressure and subjective norms 

    E-Print Network [OSTI]

    Loraas, Tina Marie

    2005-11-01

    This research investigated the decision process surrounding the self-regulated learning of new uses of existing technology. With firms investing up to 50% of their capital budgets on information technology (in excess of 1 trillion dollars...

  2. Computational Tools for Supersymmetry Calculations

    E-Print Network [OSTI]

    Howard Baer

    2009-12-16

    I present a brief overview of a variety of computational tools for supersymmetry calculations, including: spectrum generators, cross section and branching fraction calculators, low energy constraints, general purpose event generators, matrix element event generators, SUSY dark matter codes, parameter extraction codes and Les Houches interface tools.

  3. Closure and Sealing Design Calculation

    SciTech Connect (OSTI)

    T. Lahnalampi; J. Case

    2005-08-26

    The purpose of the ''Closure and Sealing Design Calculation'' is to illustrate closure and sealing methods for sealing shafts, ramps, and identify boreholes that require sealing in order to limit the potential of water infiltration. In addition, this calculation will provide a description of the magma that can reduce the consequences of an igneous event intersecting the repository. This calculation will also include a listing of the project requirements related to closure and sealing. The scope of this calculation is to: summarize applicable project requirements and codes relating to backfilling nonemplacement openings, removal of uncommitted materials from the subsurface, installation of drip shields, and erecting monuments; compile an inventory of boreholes that are found in the area of the subsurface repository; describe the magma bulkhead feature and location; and include figures for the proposed shaft and ramp seals. The objective of this calculation is to: categorize the boreholes for sealing by depth and proximity to the subsurface repository; develop drawing figures which show the location and geometry for the magma bulkhead; include the shaft seal figures and a proposed construction sequence; and include the ramp seal figure and a proposed construction sequence. The intent of this closure and sealing calculation is to support the License Application by providing a description of the closure and sealing methods for the Safety Analysis Report. The closure and sealing calculation will also provide input for Post Closure Activities by describing the location of the magma bulkhead. This calculation is limited to describing the final configuration of the sealing and backfill systems for the underground area. The methods and procedures used to place the backfill and remove uncommitted materials (such as concrete) from the repository and detailed design of the magma bulkhead will be the subject of separate analyses or calculations. Post-closure monitoring will not be addressed in this calculation.

  4. Learning Communities Peer Mentor

    E-Print Network [OSTI]

    Lin, Zhiqun

    , focused communities in which students, staff, and faculty can learn and grow together. Intended Outcomes Experience -Student Evaluations Archive Materials -Reflections of Previous Peer Mentors -Learning Community Activities -Student Evaluation Archives -Former Mentor Contact list #12;Learning Communities Vision Statement

  5. Calculation

    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 OutreachProductswsicloudwsiclouddenDVA N C E D B LReports from the CloudGEGR-N Goods POCTBT Y-12

  6. SB EE Calculator | Argonne National Laboratory

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

    Calculator Energy Efficiency Decision Support Calculator Argonne's Energy Efficiency Decision Support Calculator is a simple tool that small business owners can use to quickly...

  7. Laurent Berger TOPOLOGIE ET CALCUL

    E-Print Network [OSTI]

    Berger, Laurent

    Laurent Berger TOPOLOGIE ET CALCUL DIFF´ERENTIEL #12;Laurent Berger UMPA, ENS de Lyon, UMR 5669 du CNRS, Universit´e de Lyon. E-mail : laurent.berger@ens-lyon.fr Url : http://perso.ens-lyon

  8. Transfer Area Mechanical Handling Calculation

    SciTech Connect (OSTI)

    B. Dianda

    2004-06-23

    This calculation is intended to support the License Application (LA) submittal of December 2004, in accordance with the directive given by DOE correspondence received on the 27th of January 2004 entitled: ''Authorization for Bechtel SAX Company L.L. C. to Include a Bare Fuel Handling Facility and Increased Aging Capacity in the License Application, Contract Number DE-AC28-01R W12101'' (Arthur, W.J., I11 2004). This correspondence was appended by further Correspondence received on the 19th of February 2004 entitled: ''Technical Direction to Bechtel SAIC Company L.L. C. for Surface Facility Improvements, Contract Number DE-AC28-OIRW12101; TDL No. 04-024'' (BSC 2004a). These documents give the authorization for a Fuel Handling Facility to be included in the baseline. The purpose of this calculation is to establish preliminary bounding equipment envelopes and weights for the Fuel Handling Facility (FHF) transfer areas equipment. This calculation provides preliminary information only to support development of facility layouts and preliminary load calculations. The limitations of this preliminary calculation lie within the assumptions of section 5 , as this calculation is part of an evolutionary design process. It is intended that this calculation is superseded as the design advances to reflect information necessary to support License Application. The design choices outlined within this calculation represent a demonstration of feasibility and may or may not be included in the completed design. This calculation provides preliminary weight, dimensional envelope, and equipment position in building for the purposes of defining interface variables. This calculation identifies and sizes major equipment and assemblies that dictate overall equipment dimensions and facility interfaces. Sizing of components is based on the selection of commercially available products, where applicable. This is not a specific recommendation for the future use of these components or their related manufacturer. A component produced by one manufacturer certainly varies dimensionally from a similar product produced by a different manufacturer. The internal envelope dimensions are dependent on the selection of the individual components. The external envelope dimensions, as well as, key interface dimensions are established within this calculation and are to be treated as bounding dimensions.

  9. Once-through steam-generator sensitivity calculations

    SciTech Connect (OSTI)

    Steiner, J.L.; Siebe, D.A.

    1988-01-01

    A series of TRAC-PF1/MOD2 thermal-hydraulic calculations has been performed to determine the effect of uncertainties in modeling once through steam-generator (OTSG) secondary-side phenomena on the calculated behavior of Babcock and Wilcox power plants. The calculations were performed by varying parameters in correlations for the secondary-side phenomena. The parameters and transients were chosen to show the maximum expected sensitivity of the calculated results to the parameter variations. The parameters were then varied over a range representing the estimated uncertainty in the correlation. In this manner, the sensitivity if the calculated plant behavior to the modeling uncertainties was determined with a reasonable number of calculations. The sensitivity of calculated plant behavior to variations in interfacial heat-transfer in the OTSG secondaries was determined in a series of steam-generator overfill transient calculations. Calculations were performed for a main steam line break (MSLB) transient to quantify the sensitivity to variations in interfacial drag in the secondaries; the interfacial drag was varied in these calculations to indicate the effects of entrainment and de-entrainment processes, for which no specific models exist in the code. In addition to the transient calculations, a series of steady-state calculations was performed to determine the sensitivity of the OTSG primary-to-secondary heat transfer to the assumed fraction of tubes wetted by the auxiliary feedwater (AFW) injection. The plant model used for the sensitivity calculations was qualified by performing a benchmark calculation for a natural circulation test in the TMI-1 plant.

  10. An efficient Java implementation of the immediate successors calculation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An efficient Java implementation of the immediate successors calculation Cl´ement Gu´erin, Karell an effective Java imple- mentation of the concept immediate successors calculation. It is based on the lattice Java library, developed by K. Bertet and the Limited Objects Access algorithm, proposed by C. Demko [5

  11. Power, status, and learning in organizations

    E-Print Network [OSTI]

    Bunderson, J. Stuart

    This paper reviews the scholarly literature on the effects of social hierarchy—differences in power and status among organizational actors—on collective learning in organizations and groups. We begin with the observation ...

  12. Active Learning in Persistent Surveillance UAV Missions

    E-Print Network [OSTI]

    Redding, Joshua

    The performance of many complex UAV decision-making problems can be extremely sensitive to small errors in the model parameters. One way of mitigating this sensitivity is by designing algorithms that more effectively learn ...

  13. Learning Noise Michael Schmidt

    E-Print Network [OSTI]

    Fernandez, Thomas

    Learning Noise Michael Schmidt Computational Synthesis Laboratory Cornell University Ithaca NY to learning stochastic models with unsymmetrical noise distributions. Most learning algorithms try to learn from noisy data by modeling the maximum likelihood output or least squared error, assuming that noise

  14. DOE Lessons Learned

    Broader source: Energy.gov [DOE]

    DOE Lessons Learned Information Services Catches the Eye of Corporations and Educational Institutions

  15. Defeat in victory : organizational learning dysfunction in counterinsurgency

    E-Print Network [OSTI]

    Jackson, Colin F. (Colin Francis)

    2008-01-01

    Two puzzles dominate the study of organizational learning and counterinsurgency. First, militaries often struggle to develop effective strategies to address the problem of counterinsurgency. Second, their strategic performance ...

  16. The effect of task structure, practice schedule, and model type on the learning of relative and absolute timing by physical and observational practice 

    E-Print Network [OSTI]

    Black, Charles Beyer

    2004-11-15

    Three experiments compared learning of relative and absolute timing of a sequential key-pressing task by physical and observational practice. Experiment 1 compared a task with a complex internal structure (goal proportions of 22.2, 44.4, 33...

  17. Quantum Monte Carlo Calculations of Light Nuclei

    E-Print Network [OSTI]

    Steven C. Pieper

    2004-10-27

    Variational Monte Carlo and Green's function Monte Carlo are powerful tools for calculations of properties of light nuclei using realistic two-nucleon and three-nucleon potentials. Recently the GFMC method has been extended to multiple states with the same quantum numbers. The combination of the Argonne v_18 two-nucleon and Illinois-2 three-nucleon potentials gives a good prediction of many energies of nuclei up to 12C. A number of other recent results are presented: comparison of binding energies with those obtained by the no-core shell model; the incompatibility of modern nuclear Hamiltonians with a bound tetra-neutron; difficulties in computing RMS radii of very weakly bound nuclei, such as 6He; center-of-mass effects on spectroscopic factors; and the possible use of an artificial external well in calculations of neutron-rich isotopes.

  18. Quantum Learning Machine

    E-Print Network [OSTI]

    Jeongho Bang; James Lim; M. S. Kim; Jinhyoung Lee

    2008-03-31

    We propose a novel notion of a quantum learning machine for automatically controlling quantum coherence and for developing quantum algorithms. A quantum learning machine can be trained to learn a certain task with no a priori knowledge on its algorithm. As an example, it is demonstrated that the quantum learning machine learns Deutsch's task and finds itself a quantum algorithm, that is different from but equivalent to the original one.

  19. Permeability Calculation in a Fracture Network - 12197

    SciTech Connect (OSTI)

    Lee, Cheo Kyung; Kim, Hyo Won [Handong Global University, 3 Namsong-ri, Heunghae-eub, Buk-gu, Pohang, Kyungbuk, 791-708 (Korea, Republic of); Yim, Sung Paal [Korea Atomic Energy Research Institute, Yusong, Daejon, 305-600 (Korea, Republic of)

    2012-07-01

    Laminar flow of a viscous fluid in the pore space of a saturated fractured rock medium is considered to calculate the effective permeability of the medium. The effective permeability is determined from the flow field which is calculated numerically by using the finite element method. The computation of permeability components is carried out with a few different discretizations for a number of fracture arrangements. Various features such as flow field in the fracture channels, the convergence of permeability, and the variation of permeability among different fracture networks are discussed. The longitudinal permeability in general appears greater than the transverse ones. The former shows minor variations with fracture arrangement whereas the latter appears to be more sensitive to the arrangement. From the calculations of the permeability in a rock medium with a fracture network (two parallel fractures aligned in the direction of 45-deg counterclockwise from the horizontal and two connecting fractures(narrowing, parallel and widening) the following conclusions are drawn. 1. The permeability of fractured medium not only depends on the primary orientation of the main fractures but also is noticeably influenced by the connecting fractures in the medium. 2. The transverse permeability (the permeability in the direction normal to the direction of the externally imposed macro-scale pressure gradient) is only a fraction of the longitudinal one, but is sensitive to the arrangement of the connecting fractures. 3. It is important to figure out the pattern of the fractures that connect (or cross) the main fractures for reliable calculation of the transverse permeability. (authors)

  20. Petrophysical corner - calculating water cut

    SciTech Connect (OSTI)

    Elphick, R.Y. )

    1990-02-01

    The problem of determining the amount of water cut that can be expected from a well is discussed in conjunction with a program for making this calculation. The program was written for Amiga, Apple Macintosh, and MS DOS personal computers and source code for the program is provided.

  1. Relativistic mean field calculations in neutron-rich nuclei

    SciTech Connect (OSTI)

    Gangopadhyay, G.; Bhattacharya, Madhubrata [Department of Physics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700 009 (India); Roy, Subinit [Saha Institute of Nuclear Physics, Block AF, Sector 1, Kolkata- 700 064 (India)

    2014-08-14

    Relativistic mean field calculations have been employed to study neutron rich nuclei. The Lagrange's equations have been solved in the co-ordinate space. The effect of the continuum has been effectively taken into account through the method of resonant continuum. It is found that BCS approximation performs as well as a more involved Relativistic Continuum Hartree Bogoliubov approach. Calculations reveal the possibility of modification of magic numbers in neutron rich nuclei. Calculation for low energy proton scattering cross sections shows that the present approach reproduces the density in very light neutron rich nuclei.

  2. Learn More about Fusion & Lasers

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

    Learn More about Fusion & Lasers How Lasers Work Learn how lasers were developed and how they work. Outreach NIF & Photon Science researchers take learning opportunities on the...

  3. Failure Analysis of a Complex Learning Framework Incorporating Multi-Modal and Semi-Supervised Learning

    SciTech Connect (OSTI)

    Pullum, Laura L [ORNL; Symons, Christopher T [ORNL

    2011-01-01

    Machine learning is used in many applications, from machine vision to speech recognition to decision support systems, and is used to test applications. However, though much has been done to evaluate the performance of machine learning algorithms, little has been done to verify the algorithms or examine their failure modes. Moreover, complex learning frameworks often require stepping beyond black box evaluation to distinguish between errors based on natural limits on learning and errors that arise from mistakes in implementation. We present a conceptual architecture, failure model and taxonomy, and failure modes and effects analysis (FMEA) of a semi-supervised, multi-modal learning system, and provide specific examples from its use in a radiological analysis assistant system. The goal of the research described in this paper is to provide a foundation from which dependability analysis of systems using semi-supervised, multi-modal learning can be conducted. The methods presented provide a first step towards that overall goal.

  4. Touschek Lifetime Calculations for NSLS-II

    SciTech Connect (OSTI)

    Nash,B.; Kramer, S.

    2009-05-04

    The Touschek effect limits the lifetime for NSLS-II. The basic mechanism is Coulomb scattering resulting in a longitudinal momentum outside the momentum aperture. The momentum aperture results from a combination of the initial betatron oscillations after the scatter and the non-linear properties determining the resultant stability. We find that higher order multipole errors may reduce the momentum aperture, particularly for scattered particles with energy loss. The resultant drop in Touschek lifetime is minimized, however, due to less scattering in the dispersive regions. We describe these mechanisms, and present calculations for NSLS-II using a realistic lattice model including damping wigglers and engineering tolerances.

  5. Microscopic calculations in asymmetric nuclear matter

    E-Print Network [OSTI]

    D. Alonso; F. Sammarruca

    2003-02-06

    A microscopic calculation of the equation of state for asymmetric nuclear matter is presented. We employ realistic nucleon-nucleon forces and operate within the Dirac-Brueckner-Hartree-Fock approach to nuclear matter. The focal point of this paper is a (momentum-space) G-matrix which properly accounts for the asymmetry between protons and neutrons. This will merge naturally into the development of an effective interaction suitable for applications to asymmetric nuclei, which will be the object of extensive study in the future.

  6. Calculations of Surface Thermal-Expansion 

    E-Print Network [OSTI]

    KENNER, VE; Allen, Roland E.

    1973-01-01

    expansion. At high temperatures, the results for the surface thermal expansion are in agreement with the prediction of an approximate model which we gave earlier, +surface/abu)k ?(3/4) & ur ) su f / (0 )b lk At lOW temperatureS, a,???e/ab?,k paSSeS thr... influence the shifts in the Bragg peaks which are observed experimentally, as has been found to be the case in other attempts to measure surface thermal expansion. A nonkinematical calculation of temperature effects in low-energy-electron diffraction from...

  7. Criticality calculations for Step-2 GPHS modules.

    SciTech Connect (OSTI)

    Hensen, Danielle Lynn; Lipinski, Ronald J.

    2007-08-01

    The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) will use an improved version of the General Purpose Heat Source (GPHS) module as its source of thermal power. This new version, referred to as the Step-2 GPHS Module, has additional and thicker layers of carbon fiber material (Fine Weaved Pierced Fabric) for increased strength over the original GPHS module. The GPHS uses alpha decay of {sup 238}Pu in the oxide form as the primary source of heat, and small amounts of other actinides are also present in the oxide fuel. Criticality calculations have been performed by previous researchers on the original version of the GPHS module (Step 0). This paper presents criticality calculations for the present Step-2 version. The Monte Carlo N-Particle eXtended code (MCNPX) was used for these calculations. Numerous configurations of GPHS module arrays surrounded by wet sand and other materials (to reflect the neutrons back into the stack with minimal absorption) were modeled. For geometries with eight GPHS modules (from a single MMRTG) surrounded by wet sand, the configuration is extremely sub-critical; k{sub eff} is about 0.3. It requires about 1000 GPHS modules (from 125 MMRTGs) in a close-spaced stack to approach criticality (k{sub eff} = 1.0) when surrounded by wet sand. The effect of beryllium in the MMRTG was found to be relatively small.

  8. Criticality Calculations for Step-2 GPHS Modules

    SciTech Connect (OSTI)

    Lipinski, Ronald J. [Advanced Nuclear Concepts Department, Sandia National Laboratories, P.O Box 5800, Albuquerque, NM 87185 (United States); Hensen, Danielle L. [Risk and Reliability Department Sandia National Laboratories, P.O Box 5800, Albuquerque, NM 87185 (United States)

    2008-01-21

    The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) will use an improved version of the General Purpose Heat Source (GPHS) module as its source of thermal power. This new version, referred to as the Step-2 GPHS Module, has additional and thicker layers of carbon fiber material (Fine Weaved Pierced Fabric) for increased strength over the original GPHS module. The GPHS uses alpha decay of {sup 238}Pu in the oxide form as the primary source of heat, and small amounts of other actinides are also present in the oxide fuel. Criticality calculations have been performed by previous researchers on the original version of the GPHS module (Step 0). This paper presents criticality calculations for the present Step-2 version. The Monte Carlo N-Particle eXtended code (MCNPX) was used for these calculations. Numerous configurations of GPHS module arrays surrounded by wet sand and other materials (to reflect the neutrons back into the stack with minimal absorption) were modeled. For geometries with eight GPHS modules (from a single MMRTG) surrounded by wet sand, the configuration is extremely sub-critical; k{sub eff} is about 0.3. It requires about 1000 GPHS modules (from 125 MMRTGs) in a close-spaced stack to approach criticality (k{sub eff} = 1.0) when surrounded by wet sand. The effect of beryllium in the MMRTG was found to be relatively small.

  9. Advanced Neutronics Tools for BWR Design Calculations

    SciTech Connect (OSTI)

    Santamarina, A.; Hfaiedh, N.; Letellier, R.; Sargeni, A.; Vaglio, C. [CEA-Cadarache, 13108 St Paul lez Durance Cedex (France); Marotte, V. [AREVA NP SAS (France); Misu, S. [AREVA NP GmbH (Germany); Zmijarevic, I. [CEA-Saclay, 91191 Gif-sur-Yvette Cedex (France)

    2006-07-01

    This paper summarizes the developments implemented in the new APOLLO2.8 neutronics tool to meet the required target accuracy in LWR applications, particularly void effects and pin-by-pin power map in BWRs. The Method Of Characteristics was developed to allow efficient LWR assembly calculations in 2D-exact heterogeneous geometry; resonant reaction calculation was improved by the optimized SHEM-281 group mesh, which avoids resonance self-shielding approximation below 23 eV, and the new space-dependent method for resonant mixture that accounts for resonance overlapping. Furthermore, a new library CEA2005, processed from JEFF3.1 evaluations involving feedback from Critical Experiments and LWR P.I.E, is used. The specific '2005-2007 BWR Plan' settled to demonstrate the validation/qualification of this neutronics tool is described. Some results from the validation process are presented: the comparison of APOLLO2.8 results to reference Monte Carlo TRIPOLI4 results on specific BWR benchmarks emphasizes the ability of the deterministic tool to calculate BWR assembly multiplication factor within 200 pcm accuracy for void fraction varying from 0 to 100%. The qualification process against the BASALA mock-up experiment stresses APOLLO2.8/CEA2005 performances: pin-by-pin power is always predicted within 2% accuracy, reactivity worth of B4C or Hf cruciform control blade, as well as Gd pins, is predicted within 1.2% accuracy. (authors)

  10. Hybrid reduced order modeling for assembly calculations

    SciTech Connect (OSTI)

    Bang, Y.; Abdel-Khalik, H. S.; Jessee, M. A.; Mertyurek, U.

    2013-07-01

    While the accuracy of assembly calculations has considerably improved due to the increase in computer power enabling more refined description of the phase space and use of more sophisticated numerical algorithms, the computational cost continues to increase which limits the full utilization of their effectiveness for routine engineering analysis. Reduced order modeling is a mathematical vehicle that scales down the dimensionality of large-scale numerical problems to enable their repeated executions on small computing environment, often available to end users. This is done by capturing the most dominant underlying relationships between the model's inputs and outputs. Previous works demonstrated the use of the reduced order modeling for a single physics code, such as a radiation transport calculation. This manuscript extends those works to coupled code systems as currently employed in assembly calculations. Numerical tests are conducted using realistic SCALE assembly models with resonance self-shielding, neutron transport, and nuclides transmutation/depletion models representing the components of the coupled code system. (authors)

  11. Radiative accelerations for evolutionary model calculations

    SciTech Connect (OSTI)

    Richer, J.; Michaud, G.; Rogers, F.; Iglesias, C.; Turcotte, S.; LeBlanc, F.

    1998-01-01

    Monochromatic opacities from the OPAL database have been used to calculate radiative accelerations for the 21 included chemical species. The 10{sup 4} frequencies used are sufficient to calculate the radiative accelerations of many elements for T{gt}10{sup 5}K, using frequency sampling. This temperature limit is higher for less abundant elements. As the abundances of Fe, He, or O are varied, the radiative acceleration of other elements changes, since abundant elements modify the frequency dependence of the radiative flux and the Rosseland opacity. Accurate radiative accelerations for a given element can only be obtained by allowing the abundances of the species that contribute most to the Rosseland opacity to vary during the evolution and recalculating the radiative accelerations and the Rosseland opacity during the evolution. There are physical phenomena that cannot be included in the calculations if one uses only the OPAL data. For instance, one should correct for the momentum given to the electron in a photoionization. Such effects are evaluated using atomic data from Opacity Project, and correction factors are given. {copyright} {ital 1998} {ital The American Astronomical Society}

  12. Calculating loops without loop calculations: NLO computation of pentaquark correlators

    E-Print Network [OSTI]

    S. Groote; J. G. Körner; A. A. Pivovarov

    2012-08-27

    We compute next-to-leading order (NLO) perturbative QCD corrections to the correlators of interpolating pentaquark currents. We employ modular techniques in configuration space which saves us from the onus of having to do loop calculations. The modular technique is explained in some detail. We present explicit NLO results for several interpolating pentaquark currents that have been written down in the literature. Our modular approach is easily adapted to the case of NLO corrections to multiquark correlators with an arbitrary number of quarks/antiquarks.

  13. Incorporating Learning Styles in a Computer-Supported Collaborative Learning

    E-Print Network [OSTI]

    Griffiths, Nathan

    they think and learn. Roschelle and Teasley focus more on the nature of interaction in collaborative learning a specific problem. Student reading groups for language learning courses are an example of learning groupsIncorporating Learning Styles in a Computer-Supported Collaborative Learning Model Shuangyan Liua

  14. The Learning Environment 

    E-Print Network [OSTI]

    Howard, Jeff W.

    2005-05-10

    As a 4-H volunteer, you have tremendous influence in determining the learning that takes place within your 4-H club or group. Adult volunteers also have the task of making the learning experiences attractive to young people. ...

  15. Incorporating Weather Data into Energy Savings Calculations ...

    Energy Savers [EERE]

    Incorporating Weather Data into Energy Savings Calculations Incorporating Weather Data into Energy Savings Calculations Better Buildings Residential Network Peer Exchange Call...

  16. Health Calculators & Logs - HPMC Occupational Health Services

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

    Calculators & Logs Health Education & Wellness Downloads & Patient Materials Health & Productivity Health Calculators & Logs Body Mass Index Health Coaching Health Fairs and...

  17. Using a calculator to do statistics

    E-Print Network [OSTI]

    Dave

    2012-03-25

    Statistics on a Scientific Calculator. NOTE: Some of these may not be regular keys on your calculator and may appear in a different color above another key.

  18. CALCULATIONS FOR A MERCURY JET TARGET IN A SOLENOID MAGNET CAPTURE SYSTEM

    E-Print Network [OSTI]

    McDonald, Kirk

    may cause cavitations in the mercury jet. The purpose of this study is to calculate the lowest order and from the calculated fields we provide numerical estimates of the magneto-hydrodynamic effects. Section

  19. NAPL Calculator - Energy Innovation Portal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on77 PAGEMissionStressMoveMuncrief Ames019NAPL Calculator

  20. Primordial Gravitational Wave Calculations: Nonlinear vs Linear Codes

    E-Print Network [OSTI]

    Garrison, David

    2015-01-01

    This work is a follow-up to the paper, "Numerical Relativity as a Tool for Studying the Early Universe". In this article, we present the first results of direct numerical simulations of primordial plasma turbulence as it applies to the generation of gravitational waves. We calculate the normalized energy density, strain and degree of polarization of gravitational waves produced by a simulated turbulent plasma similar to what was believed to have existed at the electroweak scale, 246 GeV. This calculation is completed using two numerical codes, one which utilizes full General Relativity calculations based on modified BSSN equations while the other utilizes a linearized approximation of General Relativity. Our results show that there is a significant difference between the spectrum of gravitational waves calculated using a nonlinear code as opposed to that calculated with a linear approximation. This implies that simulations that do not take into account nonlinear effects may not give accurate results.

  1. Primordial Gravitational Wave Calculations: Nonlinear vs Linear Codes

    E-Print Network [OSTI]

    David Garrison

    2015-06-17

    This work is a follow-up to the paper, "Numerical Relativity as a Tool for Studying the Early Universe". In this article, we present the first results of direct numerical simulations of primordial plasma turbulence as it applies to the generation of gravitational waves. We calculate the normalized energy density, strain and degree of polarization of gravitational waves produced by a simulated turbulent plasma similar to what was believed to have existed shortly after the electroweak scale. This calculation is completed using two numerical codes, one which utilizes full General Relativity calculations based on modified BSSN equations while the other utilizes a linearized approximation of General Relativity. Our results show that there is a significant difference between the spectrum of gravitational waves calculated using a nonlinear code as opposed to that calculated with a linear approximation. This implies that simulations that do not take into account nonlinear effects may not give accurate results.

  2. Learning and risk aversion 

    E-Print Network [OSTI]

    Oyarzun, Carlos

    2009-06-02

    This dissertation contains three essays on learning and risk aversion. In the first essay we consider how learning may lead to risk averse behavior. A learning rule is said to be risk averse if it is expected to add more probability to an action...

  3. Learning to change, changing to learn : district conditions for organizational learning

    E-Print Network [OSTI]

    Guthrie, Victor Anthony

    2011-01-01

    are each focused on student learning. ” By their reports,2011). The focused theme of students learning continues and

  4. Comparison of TRAC calculations with experimental data. [PWR

    SciTech Connect (OSTI)

    Jackson, J.F.; Vigil, J.C.

    1980-01-01

    TRAC is an advanced best-estimate computer code for analyzing postulated accidents in light water reactors. This paper gives a brief description of the code followed by comparisons of TRAC calculations with data from a variety of separate-effects, system-effects, and integral experiments. Based on these comparisons, the capabilities and limitations of the early versions of TRAC are evaluated.

  5. Realistic Shell-Model Calculations for 208Pb Neighbors

    E-Print Network [OSTI]

    L. Coraggio; A. Covello; A. Gargano

    1998-12-17

    We have performed a shell-model study of the two nuclei 210Po and 206Hg, having and lacking two protons with respect to doubly magic 208Pb. In our calculations we have employed realistic effective interactions derived from the Bonn A nucleon-nucleon potential. The calculated results are compared with the available experimental data are, however, very scanty for 206Hg. The very good agreement obtained for 210Po supports confidence in our predictions for 206Hg.

  6. Point kinetics calculations with fully coupled thermal fluids reactivity feedback

    SciTech Connect (OSTI)

    Zhang, H.; Zou, L.; Andrs, D.; Zhao, H.; Martineau, R.

    2013-07-01

    The point kinetics model has been widely used in the analysis of the transient behavior of a nuclear reactor. In the traditional nuclear reactor system safety analysis codes such as RELAP5, the reactivity feedback effects are calculated in a loosely coupled fashion through operator splitting approach. This paper discusses the point kinetics calculations with the fully coupled thermal fluids and fuel temperature feedback implemented into the RELAP-7 code currently being developed with the MOOSE framework. (authors)

  7. RIT General Education Student Learning Outcomes July 2011 Rochester Institute of Technology

    E-Print Network [OSTI]

    Salvaggio, Carl

    accepted scholarly methods and properly acknowledge sources of information Ethical, Social, and GlobalRIT General Education Student Learning Outcomes July 2011 Rochester Institute of Technology General Education Student Learning Outcomes Updated July 2011 Communication Express oneself effectively in common

  8. Clinical Continuing Professional Education in Dental Hygiene Practice Using Kolb’s Experiential Learning Theory 

    E-Print Network [OSTI]

    Henson, Harold Alonso

    2014-07-29

    The purpose of this qualitative study was to understand how learning is facilitated in a dental hygiene clinical continuing education course designed using Kolb’s experiential learning model. This study assessed the effectiveness of an experiential...

  9. Hebbian Learning and Gradient Descent Learning Neural Computation : Lecture 5

    E-Print Network [OSTI]

    Bullinaria, John

    Hebbian Learning and Gradient Descent Learning Neural Computation : Lecture 5 © John A. Bullinaria, 2014 1. Hebbian Learning 2. Learning by Error Minimisation 3. Gradient Descent Learning 4. Deriving or persistently takes part in firing it, some growth process or metabolic change takes place on one or both cells

  10. Imitation guided Learning in Learning Classifier Systems

    E-Print Network [OSTI]

    Métivier, Marc

    in the framework of learning classi- fier systems. We present three different approaches in the way a behavior observed may be taken into account through a guidance interaction: two approaches using a model

  11. Image Change Detection via Ensemble Learning

    SciTech Connect (OSTI)

    Martin, Benjamin W [ORNL] [ORNL; Vatsavai, Raju [ORNL] [ORNL

    2013-01-01

    The concept of geographic change detection is relevant in many areas. Changes in geography can reveal much information about a particular location. For example, analysis of changes in geography can identify regions of population growth, change in land use, and potential environmental disturbance. A common way to perform change detection is to use a simple method such as differencing to detect regions of change. Though these techniques are simple, often the application of these techniques is very limited. Recently, use of machine learning methods such as neural networks for change detection has been explored with great success. In this work, we explore the use of ensemble learning methodologies for detecting changes in bitemporal synthetic aperture radar (SAR) images. Ensemble learning uses a collection of weak machine learning classifiers to create a stronger classifier which has higher accuracy than the individual classifiers in the ensemble. The strength of the ensemble lies in the fact that the individual classifiers in the ensemble create a mixture of experts in which the final classification made by the ensemble classifier is calculated from the outputs of the individual classifiers. Our methodology leverages this aspect of ensemble learning by training collections of weak decision tree based classifiers to identify regions of change in SAR images collected of a region in the Staten Island, New York area during Hurricane Sandy. Preliminary studies show that the ensemble method has approximately 11.5% higher change detection accuracy than an individual classifier.

  12. RTU Comparison Calculator Enhancement Plan

    SciTech Connect (OSTI)

    Miller, James D.; Wang, Weimin; Katipamula, Srinivas

    2014-03-31

    Over the past two years, Department of Energy’s Building Technologies Office (BTO) has been investigating ways to increase the operating efficiency of the packaged rooftop units (RTUs) in the field. First, by issuing a challenge to the RTU manufactures to increase the integrated energy efficiency ratio (IEER) by 60% over the existing ASHRAE 90.1-2010 standard. Second, by evaluating the performance of an advanced RTU controller that reduces the energy consumption by over 40%. BTO has previously also funded development of a RTU comparison calculator (RTUCC). RTUCC is a web-based tool that provides the user a way to compare energy and cost savings for two units with different efficiencies. However, the RTUCC currently cannot compare savings associated with either the RTU Challenge unit or the advanced RTU controls retrofit. Therefore, BTO has asked PNNL to enhance the tool so building owners can compare energy and savings associated with this new class of products. This document provides the details of the enhancements that are required to support estimating energy savings from use of RTU challenge units or advanced controls on existing RTUs.

  13. First-principles calculation of the bulk photovoltaic effect in the polar compounds LiAsS2, LiAsSe2, and NaAsSe2

    E-Print Network [OSTI]

    Rappe, Andrew M.

    by the AIP Publishing Articles you may be interested in (Sr,Ba)(Si,Ge)2 for thin-film solar-cell applications effects on atomic bonding and electronic properties at HfO2/GaAs interface: A first-principles study J.g., Si, CdTe, CIGS, and GaAs), in order for a material to exhibit a signif- icant BPVE response from

  14. TOUSCHEK LIFETIME CALCULATIONS AND SIMULATIONS FOR NSLS-II

    SciTech Connect (OSTI)

    MONTAG,C.; BENGTSSON, J.; NASH, B.

    2007-06-25

    The beam lifetime in most medium energy synchrotron radiation sources is limited by the Touschek effect, which describes the momentum transfer from the transverse into the longitudinal direction due to binary collisions between electrons. While an analytical formula exists to calculate the resulting lifetime, the actual momentum acceptance necessary to perform this calculation can only be determined by tracking. This is especially the case in the presence of small vertical apertures at insertion devices. In this case, nonlinear betatron coupling leads to beam losses at these vertical aperture restrictions. In addition, a realistic model of the storage ring is necessary for calculation of equilibrium beam sizes (particularly in the vertical direction) which are important for a self-consistent lifetime calculation.

  15. Uranium calculations.xls.xml

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPPfinalUnexpectedofWyko NT33004.

  16. DENSITY OF STATES CALCULATIONS FOR CARBON

    E-Print Network [OSTI]

    Adler, Joan

    DENSITY OF STATES CALCULATIONS FOR CARBON ALLOTROPES AND MIXTURES EDUARDO WARSZAWSKI #12;#12;DENSITY OF STATES CALCULATIONS FOR CARBON ALLOTROPES AND MIXTURES Research Thesis Submitted in Partial;#12;Contents Abstract xiii 1 Introduction 1 1.1 Carbon allotropes

  17. Oct. 12, 2005 QM/MM: What have we learned, where are we, and where

    E-Print Network [OSTI]

    Truhlar, Donald G

    1 Oct. 12, 2005 QM/MM: What have we learned, where are we, and where do we go from here? Hai Lin1/molecular mechanical (QM/MM) calculations, including their advantages and disadvantages. There is a special emphasis tests of QM/MM methods and summarize what we learn about QM/MM from these studies. We also discuss some

  18. The effectiveness of computer-assisted instruction in a horticultural plant identification course 

    E-Print Network [OSTI]

    Corbett, Mona Rae

    1992-01-01

    the variables. The computer then organizes the information, performs rapid and accurate calculations, and produces results for the student. 14 Other instructional purposes include using computer applications designed to facilitate the management... it into a high school chemistry class. They found that, although CAI was not as effective in teaching chemistry, it was important for motivating the students to learn. In some instances some students "had to be restrained from running to the computer...

  19. Quantum transport calculations using periodic boundaryconditions

    SciTech Connect (OSTI)

    Wang, Lin-Wang

    2004-06-15

    An efficient new method is presented to calculate the quantum transports using periodic boundary conditions. This method allows the use of conventional ground state ab initio programs without big changes. The computational effort is only a few times of a normal groundstate calculations, thus is makes accurate quantum transport calculations for large systems possible.

  20. Machine Learning: Foundations and Algorithms

    E-Print Network [OSTI]

    Ben-David, Shai

    Ben-David and Shai Shalev-Shwartz. #12;ii Empirical Risk Minimization (ERM) learning rule, which shows "how can a ma- chine learn". We also quantify the amount of data needed for learning using the ERM rule

  1. Scaling reinforcement learning to the unconstrained multi-agent domain 

    E-Print Network [OSTI]

    Palmer, Victor

    2009-06-02

    - MENT LEARNING . . . . . . . . . . . . . . . . . . . . . . . . . 76 A. Sample Complexity and Reinforcement Learning . . . . . . 78 B. Domain Knowledge and Fuzzy Rules . . . . . . . . . . . . 79 C. Potential Negative Effects of Added Domain Knowledge... . . 80 1. Derivation . . . . . . . . . . . . . . . . . . . . . . . . 80 2. Interpretation . . . . . . . . . . . . . . . . . . . . . . 84 D. Fuzzy Reward Shaping . . . . . . . . . . . . . . . . . . . . 86 E. Integrating Fuzzy Knowledge...

  2. Essays on social learning, cooperation, asset markets and human capital 

    E-Print Network [OSTI]

    Best, James

    2014-07-02

    In the first chapter, I examine the effect of social learning on social norms of cooperation. To this end I develop an 'anti-social learning' game. This is a dynamic social dilemma in which all agents know how to cooperate ...

  3. ERASMUS EXCHANGE LEARNING AGREEMENT

    E-Print Network [OSTI]

    Pfeifer, Holger

    ERASMUS ­ EXCHANGE LEARNING AGREEMENT --FINAL THESIS / PROJECT -- Name of Applicant Exchange to conclude Bachelor Master PhD Other: Course No. Course Title Duration (Months) ECTS (5 ECTS / Month) N is approved. Date and Stamp: Coordinator Signature: #12;ERASMUS ­ EXCHANGE | LEARNING AGREEMENT --FINAL THESIS

  4. Research on Teaching & Learning

    E-Print Network [OSTI]

    Thompson, Michael

    #12;Research on Teaching & Learning GUIDEBOOK Nancy E.Fenton,RD,Ph.D Karen Szala-Meneok,Ph.D © Mc;............................ ..................... ................................................................................ Understanding Teaching and Learning Concepts What Counts as Research? Classroom Assessment Classroom Research ............................................................. ........................................... ...................... ..................................................................... ...............................Conducting Research at McMaster University Ethics of Conducting Pedagogical Research 22

  5. Learning in Parallel

    E-Print Network [OSTI]

    Vitter, Jeffrey Scott; Lin, Jyh-Han

    1992-01-01

    In this paper, we extend Valiant's sequential model of concept learning from examples [Valiant 1984] and introduce models for the e cient learning of concept classes from examples in parallel. We say that a concept class is NC-learnable if it can...

  6. Observing motor learning produces somatosensory change Nicol F. Bernardi,1,2

    E-Print Network [OSTI]

    Malfait, Nicole

    Observing motor learning produces somatosensory change Nicolò F. Bernardi,1,2 Mohammad Darainy,1, Darainy M, Bricolo E, Ostry DJ. Observing motor learning produces somatosensory change. J Neurophysiol 110 of others has been shown to affect motor learning, but does it have effects on sensory systems as well

  7. Benchmark calculations for elastic fermion-dimer scattering

    E-Print Network [OSTI]

    Shahin Bour; H. -W. Hammer; Dean Lee; Ulf-G. Meißner

    2012-06-08

    We present continuum and lattice calculations for elastic scattering between a fermion and a bound dimer in the shallow binding limit. For the continuum calculation we use the Skorniakov-Ter-Martirosian (STM) integral equation to determine the scattering length and effective range parameter to high precision. For the lattice calculation we use the finite-volume method of L\\"uscher. We take into account topological finite-volume corrections to the dimer binding energy which depend on the momentum of the dimer. After subtracting these effects, we find from the lattice calculation kappa a_fd = 1.174(9) and kappa r_fd = -0.029(13). These results agree well with the continuum values kappa a_fd = 1.17907(1) and kappa r_fd = -0.0383(3) obtained from the STM equation. We discuss applications to cold atomic Fermi gases, deuteron-neutron scattering in the spin-quartet channel, and lattice calculations of scattering for nuclei and hadronic molecules at finite volume.

  8. Air ingression calculations for selected plant transients using MELCOR

    SciTech Connect (OSTI)

    Kmetyk, L.N.

    1994-01-01

    Two sets of MELCOR calculations have been completed studying the effects of air ingression on the consequences of various severe accident scenarios. One set of calculations analyzed a station blackout with surge line failure prior to vessel breach, starting from nominal operating conditions; the other set of calculations analyzed a station blackout occurring during shutdown (refueling) conditions. Both sets of analyses were for the Surry plant, a three-loop Westinghouse PWR. For both accident scenarios, a basecase calculation was done, and then repeated with air ingression from containment into the core region following core degradation and vessel failure. In addition to the two sets of analyses done for this program, a similar air-ingression sensitivity study was done as part of a low-power/shutdown PRA, with results summarized here; that PRA study also analyzed a station blackout occurring during shutdown (refueling) conditions, but for the Grand Gulf plant, a BWR/6 with Mark III containment. These studies help quantify the amount of air that would have to enter the core region to have a significant impact on the severe accident scenario, and demonstrate that one effect, of air ingression is substantial enhancement of ruthenium release. These calculations also show that, while the core clad temperatures rise more quickly due to oxidation with air rather than steam, the core also degrades and relocates more quickly, so that no sustained, enhanced core heatup is predicted to occur with air ingression.

  9. Quantum statistical calculation of cluster abundances in hot dense matter

    E-Print Network [OSTI]

    Gerd Ropke

    2014-07-01

    The cluster abundances are calculated from a quantum statistical approach taking into account in-medium corrections. For arbitrary cluster size the self-energy and Pauli blocking shifts are considered. Exploratory calculations are performed for symmetric matter at temperature $T=5$ MeV and baryon density $\\varrho=0.0156$ fm$^{-3}$ to be compared with the solar element distribution. It is shown that the abundances of weakly bound nuclei with mass number $4effects.

  10. A Parallel Orbital-Updating Approach for Electronic Structure Calculations

    E-Print Network [OSTI]

    Xiaoying Dai; Xingao Gong; Aihui Zhou; Jinwei Zhu

    2014-11-05

    In this paper, we propose an orbital iteration based parallel approach for electronic structure calculations. This approach is based on our understanding of the single-particle equations of independent particles that move in an effective potential. With this new approach, the solution of the single-particle equation is reduced to some solutions of independent linear algebraic systems and a small scale algebraic problem. It is demonstrated by our numerical experiments that this new approach is quite efficient for full-potential calculations for a class of molecular systems.

  11. Concept Learning Learning Concepts from Examples

    E-Print Network [OSTI]

    on features #12;2 A Concept Learning Task Four Examples: Example Sky AirTemp Humidity Wind Water ForecastTemp Humidity Wind Water Forecast EnjoySport 1 Sunny Warm Normal Strong Warm Same Yes 2 Sunny Warm High Strong attributes Example Sky AirTemp Humidity Wind Water Forecast EnjoySpor 1 Sunny Warm Normal Strong Warm Same

  12. Do tangible interfaces enhance learning? Paul Marshall

    E-Print Network [OSTI]

    Do tangible interfaces enhance learning? Paul Marshall Department of Computing, Open University interfaces has focused primarily on the production of descriptive frameworks. While this work has been, it provides little guidance on the cognitive or social effects of using one type of interface or another

  13. Some Calculations for Cold Fusion Superheavy Elements

    E-Print Network [OSTI]

    Zhong, X H; Ning, P Z

    2004-01-01

    The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references for the experiments in the superheavy nuclei synthesized in cold fusion reactions.

  14. Some Calculations for Cold Fusion Superheavy Elements

    E-Print Network [OSTI]

    X. H. Zhong; L. Li; P. Z. Ning

    2004-10-18

    The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references for the experiments in the superheavy nuclei synthesized in cold fusion reactions.

  15. Learning perceptually grounded word meanings from unaligned parallel data

    E-Print Network [OSTI]

    Tellex, Stefanie A.

    In order for robots to effectively understand natural language commands, they must be able to acquire meaning representations that can be mapped to perceptual features in the external world. Previous approaches to learning ...

  16. Improving The Generalization Performance Of The MCE/GPD Learning 

    E-Print Network [OSTI]

    Shimodaira, Hiroshi; Rokui, Jun; Nakai, Mitsuru

    A novel method to prevent the over-fitting effect and improve the generalization performance of the Minimum Classification Error (MCE) / Generalized Probabilistic Descent (GPD) learning is proposed. The MCE/GPD method, ...

  17. PEP-X IMPEDANCE AND INSTABILITY CALCULATIONS

    SciTech Connect (OSTI)

    Bane, K.L.F.; Lee, L.-Q.; Ng, C.; Stupakov, G.; au Wang, L.; Xiao, L.; /SLAC

    2010-08-25

    PEP-X, a next generation, ring-based light source is designed to run with beams of high current and low emittance. Important parameters are: energy 4.5 GeV, circumference 2.2 km, beam current 1.5 A, and horizontal and vertical emittances, 185 pm by 8 pm. In such a machine it is important that impedance driven instabilities not degrade the beam quality. In this report they study the strength of the impedance and its effects in PEP-X. For the present, lacking a detailed knowledge of the vacuum chamber shape, they create a straw man design comprising important vacuum chamber objects to be found in the ring, for which they then compute the wake functions. From the wake functions they generate an impedance budget and a pseudo-Green function wake representing the entire ring, which they, in turn, use for performing microwave instability calculations. In this report they, in addition, consider in PEP-X the transverse mode-coupling, multi-bunch transverse, and beam-ion instabilities.

  18. The First Calculation of Fractional Jets

    E-Print Network [OSTI]

    Daniele Bertolini; Jesse Thaler; Jonathan R. Walsh

    2015-05-14

    In collider physics, jet algorithms are a ubiquitous tool for clustering particles into discrete jet objects. Event shapes offer an alternative way to characterize jets, and one can define a jet multiplicity event shape, which can take on fractional values, using the framework of "jets without jets". In this paper, we perform the first analytic studies of fractional jet multiplicity $\\tilde{N}_{\\rm jet}$ in the context of $e^+e^-$ collisions. We use fixed-order QCD to understand the $\\tilde{N}_{\\rm jet}$ cross section at order $\\alpha_s^2$, and we introduce a candidate factorization theorem to capture certain higher-order effects. The resulting distributions have a hybrid jet algorithm/event shape behavior which agrees with parton shower Monte Carlo generators. The $\\tilde{N}_{\\rm jet}$ observable does not satisfy ordinary soft-collinear factorization, and the $\\tilde{N}_{\\rm jet}$ cross section exhibits a number of unique features, including the absence of collinear logarithms and the presence of soft logarithms that are purely non-global. Additionally, we find novel divergences connected to the energy sharing between emissions, which are reminiscent of rapidity divergences encountered in other applications. Given these interesting properties of fractional jet multiplicity, we advocate for future measurements and calculations of $\\tilde{N}_{\\rm jet}$ at hadron colliders like the LHC.

  19. Cooling airflow design calculations for UFAD

    E-Print Network [OSTI]

    Bauman, Fred; Webster, Tom; Benedek, Corinne

    2007-01-01

    written permission. Cooling Airflow Design Calculations form) height. Table 2: Design cooling airflow performance fortool predictions of UFAD cooling airflow rates and associ-

  20. Minimum Day Time Load Calculation and Screening

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

    from field measurements available to calculate feeder PV production based in installed Capacity per feeder (Example: capture clear day vs cloudy day): PV gen. on circuit...

  1. Evaluation Of Chemical Geothermometers For Calculating Reservoir...

    Open Energy Info (EERE)

    Evaluation Of Chemical Geothermometers For Calculating Reservoir Temperatures At Nevada Geothermal Power Plants Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  2. BLENDED AND ONLINE LEARNING IN

    E-Print Network [OSTI]

    Ellis, Randy

    ) "Flipped classroom" - focus on active learning and enhanced student engagement in the classroom #12;First dissatisfied with student learning experience #12;Blended Learning Initiative Large, first-year courses student engagement improve student learning outcomes improve knowledge retention #12;Framework for Blended

  3. Time series association learning

    DOE Patents [OSTI]

    Papcun, George J. (Santa Fe, NM)

    1995-01-01

    An acoustic input is recognized from inferred articulatory movements output by a learned relationship between training acoustic waveforms and articulatory movements. The inferred movements are compared with template patterns prepared from training movements when the relationship was learned to regenerate an acoustic recognition. In a preferred embodiment, the acoustic articulatory relationships are learned by a neural network. Subsequent input acoustic patterns then generate the inferred articulatory movements for use with the templates. Articulatory movement data may be supplemented with characteristic acoustic information, e.g. relative power and high frequency data, to improve template recognition.

  4. Calculation of complex DNA damage induced by ions

    E-Print Network [OSTI]

    Eugene Surdutovich; David C. Gallagher; Andrey V. Solov'yov

    2012-01-27

    This paper is devoted to the analysis of the complex damage of DNA irradiated by ions. The analysis and assessment of complex damage is important because cells in which it occurs are less likely to survive because the DNA repair mechanisms may not be sufficiently effective. We studied the flux of secondary electrons through the surface of nucleosomes and calculated the radial dose and the distribution of clustered damage around the ion's track. The calculated radial dose distribution is compared to simulations. The radial distribution of the complex damage is found to be different from that of the dose. Comparison with experiments may solve the question of what is more lethal for the cell, damage complexity or absorbed energy. We suggest a way to calculate the probability of cell death based on the complexity of the damage. This work is done within the framework of the phenomenon-based multiscale approach to radiation damage by ions.

  5. A Cognitive Approach to Student-Centered e-Learning

    SciTech Connect (OSTI)

    Greitzer, Frank L.

    2002-09-30

    Like traditional classroom instruction, distance/electronic learning (e-Learning) derives from largely behaviorist computer-based instruction paradigms that tend to reflect passive training philosophies. Over the past thirty years, more flexible, student-centered classroom teaching methods have been advocated based on the concepts of ''discovery'' learning and ''active'' learning; student-centered approaches are likewise encouraged in the development of e-Learning applications. Nevertheless, many e-Learning applications that employ state-of-the art multimedia technology in which students interact with simulations, animations, video, and sounds still fail to meet their expected training potential. Implementation of multimedia-based training features may give the impression of engaging the student in more active forms of learning, but sophisticated use of multimedia features does not necessarily produce the desired effect. This paper briefly reviews some general guidelines for applying cognitive science principles to development of student-centered e-Learning applications and describes a cognitive approach to e-Learning development that is being undertaken for the US Army.

  6. Assessment Design The unit coordinator is responsible for designing effective, efficient assessment tasks. There are

    E-Print Network [OSTI]

    Mucina, Ladislav

    2 Assessment Design The unit coordinator is responsible for designing effective, efficient tasks for a unit. Constructive alignment A fundamental principle underlying successful learning and contributes to the unit grade/mark. Purpose Assessment for learning Assessment of learning Informs

  7. Chemistry 365: Force Constant Calculations David Ronis

    E-Print Network [OSTI]

    Ronis, David M.

    cost energy, and hence, there will no force in thy y or z directions (thereby resulting in 4 zero eigenChemistry 365: Force Constant Calculations © David Ronis McGill University Here is an example of a force constant matrix calculation. We will consider a diatomic molecule, where the two atoms interact

  8. PVWatts (R) Calculator India (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-01-01

    The PVWatts (R) Calculator for India was released by the National Renewable Energy Laboratory in 2013. The online tool estimates electricity production and the monetary value of that production of grid-connected roof- or ground-mounted crystalline silicon photovoltaics systems based on a few simple inputs. This factsheet provides a broad overview of the PVWatts (R) Calculator for India.

  9. Blind quantum machine learning

    E-Print Network [OSTI]

    Yu-Bo Sheng; Lan Zhou

    2015-07-26

    Blind quantum machine learning (BQML) enables a classical client with little quantum technology to delegate a remote quantum machine learning to the quantum server in such a approach that the privacy data is preserved. Here we propose the first BQML protocol that the client can classify two-dimensional vectors to different clusters, resorting to a remote small-scale photon quantum computation processor. During the protocol, the client is only required to rotate and measure the single qubit. The protocol is secure without leaking any relevant information to the Eve. Any eavesdropper who attempts to intercept and disturb the learning process can be noticed. In principle, this protocol can be used to classify high dimensional vectors and may provide a new viewpoint and application for quantum machine learning.

  10. Robot learning [TC Spotlight

    E-Print Network [OSTI]

    Tedrake, Russell Louis

    Creating autonomous robots that can learn to act in unpredictable environments has been a long-standing goal of robotics, artificial intelligence, and the cognitive sciences. In contrast, current commercially available ...

  11. Experiments in service learning

    E-Print Network [OSTI]

    Banzaert, Amy, 1976-

    2006-01-01

    Service learning, an educational method that involves the application of academic work to projects that benefit under-served communities, was explored in two complementary forms. First, the development of an alternative ...

  12. Computers for Learning

    Broader source: Energy.gov [DOE]

    Through Executive Order 12999, the Computers for Learning Program was established to provide Federal agencies a quick and easy system for donating excess and surplus computer equipment to schools...

  13. Tools for calculations in color space

    E-Print Network [OSTI]

    Malin Sjodahl; Stefan Keppeler

    2013-07-04

    Both the higher energy and the initial state colored partons contribute to making exact calculations in QCD color space more important at the LHC than at its predecessors. This is applicable whether the method of assessing QCD is fixed order calculation, resummation, or parton showers. In this talk we discuss tools for tackling the problem of performing exact color summed calculations. We start with theoretical tools in the form of the (standard) trace bases and the orthogonal multiplet bases (for which a general method of construction was recently presented). Following this, we focus on two new packages for performing color structure calculations: one easy to use Mathematica package, ColorMath, and one C++ package, ColorFull, which is suitable for more demanding calculations, and for interfacing with event generators.

  14. Deep learning and the renormalization group

    E-Print Network [OSTI]

    Cédric Bény

    2013-03-13

    Renormalization group (RG) methods, which model the way in which the effective behavior of a system depends on the scale at which it is observed, are key to modern condensed-matter theory and particle physics. We compare the ideas behind the RG on the one hand and deep machine learning on the other, where depth and scale play a similar role. In order to illustrate this connection, we review a recent numerical method based on the RG---the multiscale entanglement renormalization ansatz (MERA)---and show how it can be converted into a learning algorithm based on a generative hierarchical Bayesian network model. Under the assumption---common in physics---that the distribution to be learned is fully characterized by local correlations, this algorithm involves only explicit evaluation of probabilities, hence doing away with sampling.

  15. Benchmarking kinetic calculations of resistive wall mode stability

    SciTech Connect (OSTI)

    Berkery, J. W.; Sabbagh, S. A.; Liu, Y. Q.; Betti, R.

    2014-05-15

    Validating the calculations of kinetic resistive wall mode (RWM) stability is important for confidently predicting RWM stable operating regions in ITER and other high performance tokamaks for disruption avoidance. Benchmarking the calculations of the Magnetohydrodynamic Resistive Spectrum—Kinetic (MARS-K) [Y. Liu et al., Phys. Plasmas 15, 112503 (2008)], Modification to Ideal Stability by Kinetic effects (MISK) [B. Hu et al., Phys. Plasmas 12, 057301 (2005)], and Perturbed Equilibrium Nonambipolar Transport (PENT) [N. Logan et al., Phys. Plasmas 20, 122507 (2013)] codes for two Solov'ev analytical equilibria and a projected ITER equilibrium has demonstrated good agreement between the codes. The important particle frequencies, the frequency resonance energy integral in which they are used, the marginally stable eigenfunctions, perturbed Lagrangians, and fluid growth rates are all generally consistent between the codes. The most important kinetic effect at low rotation is the resonance between the mode rotation and the trapped thermal particle's precession drift, and MARS-K, MISK, and PENT show good agreement in this term. The different ways the rational surface contribution was treated historically in the codes is identified as a source of disagreement in the bounce and transit resonance terms at higher plasma rotation. Calculations from all of the codes support the present understanding that RWM stability can be increased by kinetic effects at low rotation through precession drift resonance and at high rotation by bounce and transit resonances, while intermediate rotation can remain susceptible to instability. The applicability of benchmarked kinetic stability calculations to experimental results is demonstrated by the prediction of MISK calculations of near marginal growth rates for experimental marginal stability points from the National Spherical Torus Experiment (NSTX) [M. Ono et al., Nucl. Fusion 40, 557 (2000)].

  16. Unsupervised Learning of Object Descriptors and Compositions

    E-Print Network [OSTI]

    Ye, Xingyao

    2012-01-01

    Reported Experiments A New Experiment on Human Learning ofof previous experiments on human chunk learning, along withnew psychophysical experiment, where human observers learned

  17. Formative Assessment, Equity, and Opportunity to Learn

    E-Print Network [OSTI]

    Hilberg, Soleste

    2012-01-01

    inquiry focused on student learning, and to explore theirinquiry focused on student learning, and (c) how this workinquiry focused on student learning. Interrelatedly, there

  18. Lessons Learned Database | Department of Energy

    Office of Environmental Management (EM)

    Lessons Learned Database Lessons Learned Database The DOE Corporate Lessons Learned Database provides a central clearinghouse that allows ready access to and communication about...

  19. Optimal Online Learning with Matrix Parameters

    E-Print Network [OSTI]

    Nie, Jiazhong

    2015-01-01

    Learning Problem: the Expert Setting 1.2 Learning Matrixwith Dense Instance Matrices . . . . . . . . .Optimal Online Learning with Matrix Parameters by Jiazhong

  20. Neural predictors of auditory word learning

    E-Print Network [OSTI]

    2008-01-01

    N EURO R EPORT AUDITORY WORD LEARNING (a) (a) R Pre-trainingpredict the efficiency of word learning. Acknowledgementspredictors of visual word learning. Neuropsychologia 9.

  1. Rooftop Unit Comparison Calculator User Manual

    SciTech Connect (OSTI)

    Miller, James D.

    2015-04-30

    This document serves as a user manual for the Packaged rooftop air conditioners and heat pump units comparison calculator (RTUCC) and is an aggregation of the calculator’s website documentation. Content ranges from new-user guide material like the “Quick Start” to the more technical/algorithmic descriptions of the “Methods Pages.” There is also a section listing all the context-help topics that support the features on the “Controls” page. The appendix has a discussion of the EnergyPlus runs that supported the development of the building-response models.

  2. Assessment of seismic margin calculation methods

    SciTech Connect (OSTI)

    Kennedy, R.P.; Murray, R.C.; Ravindra, M.K.; Reed, J.W.; Stevenson, J.D.

    1989-03-01

    Seismic margin review of nuclear power plants requires that the High Confidence of Low Probability of Failure (HCLPF) capacity be calculated for certain components. The candidate methods for calculating the HCLPF capacity as recommended by the Expert Panel on Quantification of Seismic Margins are the Conservative Deterministic Failure Margin (CDFM) method and the Fragility Analysis (FA) method. The present study evaluated these two methods using some representative components in order to provide further guidance in conducting seismic margin reviews. It is concluded that either of the two methods could be used for calculating HCLPF capacities. 21 refs., 9 figs., 6 tabs.

  3. Transport calculation of dilepton production at ultrarelativistic energies

    E-Print Network [OSTI]

    C. Ernst; S. A. Bass; S. Soff; H. Stöcker; W. Greiner

    1999-07-30

    Dilepton spectra are calculated within the microscopic transport model UrQMD and compared to data from the CERES experiment. The invariant mass spectra in the region 300 MeV < M < 600 MeV depend strongly on the mass dependence of the $\\rho$ meson decay width which is not sufficiently determined by the Vector Meson Dominance model. A consistent explanation of both the recent Pb+Au data and the proton induced data can be given without additional medium effects.

  4. Calculations of pair production by Monte Carlo methods

    SciTech Connect (OSTI)

    Bottcher, C.; Strayer, M.R.

    1991-01-01

    We describe some of the technical design issues associated with the production of particle-antiparticle pairs in very large accelerators. To answer these questions requires extensive calculation of Feynman diagrams, in effect multi-dimensional integrals, which we evaluate by Monte Carlo methods on a variety of supercomputers. We present some portable algorithms for generating random numbers on vector and parallel architecture machines. 12 refs., 14 figs.

  5. INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS

    E-Print Network [OSTI]

    Finley Jr., Russell L.

    INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS YOU KNOW WHAT THE TUITION, STIPEND AND EQUIPMENT COSTS ARE YOU KNOW WHAT THE TOTAL COST IS CALCULATION IS USING THE 2010 FED F&A RATE FOR WSU OF 52% (.52) [ DIRECT COST ­ TUITION ­ STIPEND ­ EQUIPMENT] (.52 ) + DIRECT

  6. HYDRAULIC CALCULATIONS FOR A MODIFIED IN-SITU RETORT

    E-Print Network [OSTI]

    Hall, W.G.

    2012-01-01

    LBL-1 0431 UC-91 HYDRAULIC CALCULATIONS FOR A MODIFIED IN-REFERENCES • . • • • • . , . HYDRAULIC CALCULATIONS FOR ACalifomia. LBL-10431 HYDRAULIC CALCULATIONS FOR A MODIFIED

  7. Effects

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansas Nuclear Profile 2010MesoscopyStaff »VehicleEffective TeachingEffects of

  8. Feedback in Intelligent Computer-Assisted Language Learning and Second Language Acquisition: A study of its effect on the acquisition of French past tense aspect using an Intelligent Language Tutoring System 

    E-Print Network [OSTI]

    Hanson, Ruth Mary

    2008-01-01

    Questions surrounding the impact of feedback in response to learner error are of interest in the fields of both Second Language Acquisition (SLA) and Intelligent Computer-Assisted Language Learning (ICALL). Current ...

  9. Essential Value, Pmax, and Omax Automated Calculator

    E-Print Network [OSTI]

    Kaplan, Brent A.; Reed, Derek D.

    2014-08-21

    Behavioral economic measures of demand are often calculated in sophisticated spreadsheet programs. Unfortunately, no closed form models for exact pmax (point of unit elasticity) and omax (response output at pmax) can be applied to initial regression...

  10. First principle thousand atom quantum dot calculations

    SciTech Connect (OSTI)

    Wang, Lin-Wang; Li, Jingbo

    2004-03-30

    A charge patching method and an idealized surface passivation are used to calculate the single electronic states of IV-IV, III-V, II-VI semiconductor quantum dots up to a thousand atoms. This approach scales linearly and has a 1000 fold speed-up compared to direct first principle methods with a cost of eigen energy error of about 20 meV. The calculated quantum dot band gaps are parametrized for future references.

  11. Perturbative calculation of quasinormal modes of AdS Schwarzschild black holes

    SciTech Connect (OSTI)

    Musiri, Suphot; Ness, Scott; Siopsis, George [Department of Physics, Srinakharinwirot University, Bangkok 10110 (Thailand); Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)

    2006-03-15

    We calculate analytically quasinormal modes of AdS Schwarzschild black holes including first-order corrections. We consider massive scalar, gravitational and electromagnetic perturbations. Our results are in good agreement with numerical calculations. In the case of electromagnetic perturbations, ours is the first calculation to provide an analytic expression for quasinormal frequencies, because the effective potential vanishes at zeroth order. We show that the first-order correction is logarithmic.

  12. Relativistic configuration-interaction calculation of $K\\alpha$ transition energies in beryllium-like argon

    E-Print Network [OSTI]

    Yerokhin, V A; Fritzsche, S

    2014-01-01

    Relativistic configuration-interaction calculations have been performed for the energy levels of the low-lying and core-excited states of beryllium-like argon, Ar$^{14+}$. These calculations include the one-loop QED effects as obtained by two different methods, the screening-potential approach as well as the model QED operator approach. The calculations are supplemented by a systematic estimation of uncertainties of theoretical predictions.

  13. Low-Risk and Cost-Effective Prior Savings Estimates for Large-Scale Energy Conservation Projects in Housing: Learning from the Fort Polk GHP Project

    SciTech Connect (OSTI)

    Shonder, John A; Hughes, Patrick; Thornton, Jeff W.

    1997-08-01

    Many opportunities exist for large-scale energy conservation projects in housing: military housing, federally-subsidized low-income housing, and planned communities (condominiums, townhomes, senior centers) to name a few. Energy savings performance contracting (ESPC) is now receiving greater attention, as a means to implement such projects. This paper proposes an improved method for prior (to construction) savings estimates for these projects. More accurate prior estimates reduce project risk, decrease financing costs, and help avoid post-construction legal disputes over performance contract baseline adjustments. The proposed approach to prior estimates is verified against data from Fort Polk, LA. In the course of evaluating the ESPC at Fort Polk, Louisiana, we have collected energy use data - both at the electrical feeder level and at the level of individual residences - which allowed us to develop calibrated engineering models which accurately predict pre-retrofit energy consumption. We believe that such calibrated models could be used to provide much more accurate estimates of energy savings in retrofit projects, particularly in cases where the energy consumption of large populations of housing can be captured on one or a few meters. The improved savings estimating approach described here is based on an engineering model calibrated to field-collected data from the pre-retrofit period. A dynamic model of pre-retrofit energy use was developed for all housing and non-housing loads on a complete electrical feeder at Fort Polk. The feeder serves 46 buildings containing a total of 200 individual apartments. Of the 46 buildings, there are three unique types, and among these types the only difference is compass orientation. The model included the heat transfer characteristics of the buildings, the pre-retrofit air source heat pump, a hot water consumption model and a profile for electrical use by lights and other appliances. Energy consumption for all 200 apartments was totaled, and by adjusting thermostat setpoints and outdoor air infiltration parameters, the models were matched to field-collected energy consumption data for the entire feeder. The energy conservation measures were then implemented in the calibrated model: the air source heat pumps were replaced by geothermal heat pumps (GHPs) with desuperheaters; hot water loads were reduced to account for the low-flow shower heads; and lighting loads were reduced to account for fixture delamping and replacement with compact fluorescent lights (CFLs). Our analysis of pre- and post-retrofit data (Shonder and Hughes, 1997) indicates that the retrofits have saved 30.3% of pre-retrofit electrical energy consumption on the feeder modeled in this paper. Using the method outlined, we have been able to predict this savings within 0.1% of its measured value, using only pre-construction energy consumption data, and data from one pilot test site. It is well-known that predictions of savings from energy conservation programs are often optimistic, especially in the case of residential retrofits. Fels and keating (1993) cite several examples of programs which achieved as little as 20% of the predicted energy savings. Factors which influence the sometimes large discrepancies between actual and predicted savings include changes in occupancy, take-back effects (in which more efficient system operation leads occupants to choose higher levels of comfort), and changes in base energy use (e.g. through purchase of additional appliances such as washing machines and clothes dryers). An even larger factor, perhaps, is the inaccuracy inherent in the engineering models (BLAST, DOE-2, etc.) commonly used to estimate building energy consumption, if these models are not first calibrated to site-monitored data. For example, prior estimates of base-wide savings from the Fort Polk ESPC were on the order of 40% of pre-retrofit electrical use; our analysis has shown the true savings for the entire project (which includes 16 separate electrical feeders) to be about 32%. It should be noted that the retrofits ca

  14. Adding a Learning Module -1 Adding a Learning Module

    E-Print Network [OSTI]

    Cui, Yan

    Items focused on a specific subject that students can navigate at their own pace. For example or No for Enforce Sequential Viewing for the Learning Module. Selecting Yes will require students to view the Learning Module within a Table of Contents, which students can also use to navigate through the Learning

  15. 1 Design by Autonomous Learning Design by Autonomous Learning

    E-Print Network [OSTI]

    Prabhakar, Sattiraju

    1 Design by Autonomous Learning Design by Autonomous Learning: Modeling Environment for Design Box 123, Broadway NSW 2007, Australia Email: {prabhakar, gjsmith}@socs.uts.edu.au 1. Design by Autonomous Learning An important area of expertise robots can provide is design of artefacts in physical

  16. PVLV: The Primary Value and Learned Value Pavlovian Learning Algorithm

    E-Print Network [OSTI]

    O'Reilly, Randall C.

    robust to variability in the environment. The primary value (PV) system controls performance and learning during primary rewards, whereas the learned value (LV) system learns about conditioned stimuli. The PV framework (Sutton, 1988; Sutton & Barto, 1998) is by far the most widely adopted computational level account

  17. Learning Deep Generative Ruslan Salakhutdinov

    E-Print Network [OSTI]

    Toronto, University of

    Learning Deep Generative Models Ruslan Salakhutdinov Departments of Computer Science reserved Keywords deep learning, deep belief networks, deep Boltzmann machines, graphical models Abstract suggest that building such systems requires models with deep architectures that involve many layers

  18. Smart subtitles for vocabulary learning

    E-Print Network [OSTI]

    Kovacs, Geza

    Language learners often use subtitled videos to help them learn. However, standard subtitles are geared more towards comprehension than vocabulary learning, as translations are nonliteral and are provided only for phrases, ...

  19. Towards a Brewery Educational Game: Would Existence of a Game Goal Improve Learning?

    E-Print Network [OSTI]

    Brom, Cyril

    Towards a Brewery Educational Game: Would Existence of a Game Goal Improve Learning? Cyril Brom effect on learning gains. We also present a brewery simulation/game, which we have developed brewery simulation/game, designed for the purpose of investigating instructional effectiveness

  20. In Proceedings of AAAI-94, pgs. 595-600 Flexible Strategy Learning: Analogical Replay of Problem Solving Episodes

    E-Print Network [OSTI]

    Veloso, Manuela M.

    into general problem solving as a method of learning at the strategy level to solve problems more effectively. Learning occurs by the generation and replay of annotated deriva- tional traces of problem solving episodes reasoner compiles complete problem solving cases that are used to guide future similar situations. Learned

  1. Student Success Effective Seminar Participation

    E-Print Network [OSTI]

    See over Student Success Effective Seminar Participation Seminars are effective learning experiences as students learn more from talking and listening to each other than they do from listening to keep the conversation going, focused, and inclusive. Confidentiality and Respectful Behaviour o

  2. Century Learning through Apple Technology

    E-Print Network [OSTI]

    21st Century Learning through Apple Technology July 4 ­ 5, 2013 This exciting institute will appeal to educators who wish to enhance their teaching in support of 21st century learning using Apple technology. This institute begins with a keynote address that looks at how new technologies can enhance 21st century learning

  3. Benchmarking calculations of excitonic couplings between bacteriochlorophylls

    E-Print Network [OSTI]

    Kenny, Elise P

    2015-01-01

    Excitonic couplings between (bacterio)chlorophyll molecules are necessary for simulating energy transport in photosynthetic complexes. Many techniques for calculating the couplings are in use, from the simple (but inaccurate) point-dipole approximation to fully quantum-chemical methods. We compared several approximations to determine their range of applicability, noting that the propagation of experimental uncertainties poses a fundamental limit on the achievable accuracy. In particular, the uncertainty in crystallographic coordinates yields an uncertainty of about 20% in the calculated couplings. Because quantum-chemical corrections are smaller than 20% in most biologically relevant cases, their considerable computational cost is rarely justified. We therefore recommend the electrostatic TrEsp method across the entire range of molecular separations and orientations because its cost is minimal and it generally agrees with quantum-chemical calculations to better than the geometric uncertainty. We also caution ...

  4. Improved Calculation of Thermal Fission Energy

    E-Print Network [OSTI]

    Ma, X B; Wang, L Z; Chen, Y X; Cao, J

    2013-01-01

    Thermal fission energy is one of the basic parameters needed in the calculation of antineutrino flux for reactor neutrino experiments. It is useful to improve the precision of the thermal fission energy calculation for current and future reactor neutrino experiments, which are aimed at more precise determination of neutrino oscillation parameters. In this article, we give new values for thermal fission energies of some common thermal reactor fuel iso-topes, with improvements on two aspects. One is more recent input data acquired from updated nuclear databases. The other, which is unprecedented, is a consideration of the production yields of fission fragments from both thermal and fast incident neutrons for each of the four main fuel isotopes. The change in calculated antineutrino flux due to the new values of thermal fission energy is about 0.33%, and the uncertainties of the new values are about 30% smaller.

  5. Numeric spectral radiation hydrodynamic calculations of supernova shock breakouts

    SciTech Connect (OSTI)

    Sapir, Nir; Halbertal, Dorri [Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel)

    2014-12-01

    We present here an efficient numerical scheme for solving the non-relativistic one-dimensional radiation-hydrodynamics equations including inelastic Compton scattering, which is not included in most codes and is crucial for solving problems such as shock breakout. The devised code is applied to the problems of a steady-state planar radiation mediated shock (RMS) and RMS breakout from a stellar envelope. The results are in agreement with those of a previous work on shock breakout, in which Compton equilibrium between matter and radiation was assumed and the 'effective photon' approximation was used to describe the radiation spectrum. In particular, we show that the luminosity and its temporal dependence, the peak temperature at breakout, and the universal shape of the spectral fluence derived in this earlier work are all accurate. Although there is a discrepancy between the spectral calculations and the effective photon approximation due to the inaccuracy of the effective photon approximation estimate of the effective photon production rate, which grows with lower densities and higher velocities, the difference in peak temperature reaches only 30% for the most discrepant cases of fast shocks in blue supergiants. The presented model is exemplified by calculations for supernova 1987A, showing the detailed evolution of the burst spectrum. The incompatibility of the stellar envelope shock breakout model results with observed properties of X-ray flashes (XRFs) and the discrepancy between the predicted and observed rates of XRFs remain unexplained.

  6. Software Carpentry: Lessons Learned

    E-Print Network [OSTI]

    Greg Wilson

    2014-01-29

    Over the last 15 years, Software Carpentry has evolved from a week-long training course at the US national laboratories into a worldwide volunteer effort to raise standards in scientific computing. This article explains what we have learned along the way the challenges we now face, and our plans for the future.

  7. Radiological Dose Calculations for Fusion Facilities

    SciTech Connect (OSTI)

    Michael L. Abbott; Lee C. Cadwallader; David A. Petti

    2003-04-01

    This report summarizes the results and rationale for radiological dose calculations for the maximally exposed individual during fusion accident conditions. Early doses per unit activity (Sieverts per TeraBecquerel) are given for 535 magnetic fusion isotopes of interest for several release scenarios. These data can be used for accident assessment calculations to determine if the accident consequences exceed Nuclear Regulatory Commission and Department of Energy evaluation guides. A generalized yearly dose estimate for routine releases, based on 1 Terabecquerel unit releases per radionuclide, has also been performed using averaged site parameters and assumed populations. These routine release data are useful for assessing designs against US Environmental Protection Agency yearly release limits.

  8. Heat Exchanger Support Bracket Design Calculations

    SciTech Connect (OSTI)

    Rucinski, Russ; /Fermilab

    1995-01-12

    This engineering note documents the design of the heat exchanger support brackets. The heat exchanger is roughly 40 feet long, 22 inches in diameter and weighs 6750 pounds. It will be mounted on two identical support brackets that are anchored to a concrete wall. The design calculations were done for one bracket supporting the full weight of the heat exchanger, rounded up to 6800 pounds. The design follows the American Institute of Steel Construction (AISC) Manual of steel construction, Eighth edition. All calculated stresses and loads on welds were below allowables.

  9. Mesoscale polycrystal calculations of damage in spallation in metals

    SciTech Connect (OSTI)

    Tonks, Davis L [Los Alamos National Laboratory; Bingert, John F [Los Alamos National Laboratory; Livescu, Veronica [Los Alamos National Laboratory; Luo, Shengnian [Los Alamos National Laboratory; Bronkhorst, C A [Los Alamos National Laboratory

    2010-01-01

    The goal of this project is to produce a damage model for spallation in metals informed by the polycrystalline grain structure at the mesoscale. Earlier damage models addressed the continuwn macroscale in which these effects were averaged out. In this work we focus on cross sections from recovered samples examined with EBSD (electron backscattered diffraction), which reveal crystal grain orientations and voids. We seek to understand the loading histories of specific sample regions by meshing up the crystal grain structure of these regions and simulating the stress, strain, and damage histories in our hydro code, FLAG. The stresses and strain histories are the fundamental drivers of damage and must be calculated. The calculated final damage structures are compared with those from the recovered samples to validate the simulations.

  10. Quantum Monte Carlo Calculations of Light Nuclei Using Chiral Potentials

    E-Print Network [OSTI]

    J. E. Lynn; J. Carlson; E. Epelbaum; S. Gandolfi; A. Gezerlis; A. Schwenk

    2014-11-09

    We present the first Green's function Monte Carlo calculations of light nuclei with nuclear interactions derived from chiral effective field theory up to next-to-next-to-leading order. Up to this order, the interactions can be constructed in a local form and are therefore amenable to quantum Monte Carlo calculations. We demonstrate a systematic improvement with each order for the binding energies of $A=3$ and $A=4$ systems. We also carry out the first few-body tests to study perturbative expansions of chiral potentials at different orders, finding that higher-order corrections are more perturbative for softer interactions. Our results confirm the necessity of a three-body force for correct reproduction of experimental binding energies and radii, and pave the way for studying few- and many-nucleon systems using quantum Monte Carlo methods with chiral interactions.

  11. Lessons learned bulletin. Number 2

    SciTech Connect (OSTI)

    Not Available

    1994-05-01

    During the past four years, the Department of Energy -- Savannah River Operations Office and the Westinghouse Savannah River Company (WSRC) Environmental Restoration (ER) Program completed various activities ranging from waste site investigations to closure and post closure projects. Critiques for lessons learned regarding project activities are performed at the completion of each project milestone, and this critique interval allows for frequent recognition of lessons learned. In addition to project related lessons learned, ER also performs lessons learned critiques. T`he Savannah River Site (SRS) also obtains lessons learned information from general industry, commercial nuclear industry, naval nuclear programs, and other DOE sites within the complex. Procedures are approved to administer the lessons learned program, and a database is available to catalog applicable lessons learned regarding environmental remediation, restoration, and administrative activities. ER will continue to use this database as a source of information available to SRS personnel.

  12. Benchmarking calculations of excitonic couplings between bacteriochlorophylls

    E-Print Network [OSTI]

    Elise P. Kenny; Ivan Kassal

    2015-09-09

    Excitonic couplings between (bacterio)chlorophyll molecules are necessary for simulating energy transport in photosynthetic complexes. Many techniques for calculating the couplings are in use, from the simple (but inaccurate) point-dipole approximation to fully quantum-chemical methods. We compared several approximations to determine their range of applicability, noting that the propagation of experimental uncertainties poses a fundamental limit on the achievable accuracy. In particular, the uncertainty in crystallographic coordinates yields an uncertainty of about 20% in the calculated couplings. Because quantum-chemical corrections are smaller than 20% in most biologically relevant cases, their considerable computational cost is rarely justified. We therefore recommend the electrostatic TrEsp method across the entire range of molecular separations and orientations because its cost is minimal and it generally agrees with quantum-chemical calculations to better than the geometric uncertainty. We also caution against computationally optimizing a crystal structure before calculating couplings, as it can lead to large, uncontrollable errors. Understanding the unavoidable uncertainties can guard against striving for unrealistic precision; at the same time, detailed benchmarks can allow important qualitative questions--which do not depend on the precise values of the simulation parameters--to be addressed with greater confidence about the conclusions.

  13. Spin Contamination in Inorganic Chemistry Calculations

    E-Print Network [OSTI]

    Schlegel, H. Bernhard

    R EVISED PAG E PR O O FS ia617 Spin Contamination in Inorganic Chemistry Calculations Jason L . In such cases, 0 is said to be spin contaminated owing to incorporation of higher spin state character of Iron­Sulfur ia618 Clusters). It is important to note that while spin-contaminated and broken

  14. CALCULATING THE CARBON FOOTPRINT SUPPLY CHAIN FOR

    E-Print Network [OSTI]

    Su, Xiao

    CALCULATING THE CARBON FOOTPRINT SUPPLY CHAIN FOR THE SEMICONDUCTOR INDUSTRY By: Yasser Dessouky #12;Carbon Footprint Supply Chain Carbon Trust defines carbon footprint of a supply chain as follows: "The carbon footprint of a product is the carbon dioxide emitted across the supply chain for a single

  15. PIC : Protein Interaction Calculator HELP AND GUIDELINES

    E-Print Network [OSTI]

    Srinivasan, N.

    PIC : Protein Interaction Calculator HELP AND GUIDELINES CONTENTS 1. Overview 2. Method 3. Input 4 (PIC) is a server which, given the coordinate set of threedimensional structure of a protein colored by PIC programmes can be downloaded and conveniently displayed with structural viewers

  16. Calculated fission properties of the heaviest elements

    SciTech Connect (OSTI)

    Moeller, P.; Nix, J.R.; Swiatecki, W.J.

    1986-09-01

    A quantitative calculation is presented that shows where high-kinetic-energy symmetric fission occurs and why it is associated with a sudden and large decrease in fission half-lives. The study is based on calculations of potential-energy surfaces in the macroscopic-microscopic model and a semi-empirical model for the nuclear inertia. For the macroscopic part a Yukawa-plus-exponential model is used and for the microscopic part a folded-Yukawa single-particle potential is used. The three-quadratic-surface parameterization generates shapes for which the potential-energy surfaces are calculated. The use of this parameterization and the use of the finite-range macroscopic model allows for the study of two touching spheres and similar shapes. The results of the calculations in terms of potential-energy surfaces and fission half-lives are presented for heavy even nuclei. The surfaces are displayed in the form of contour diagrams as functions of two moments of the shape. 53 refs., 15 figs., 1 tab.

  17. Oberseminar -ICP Temperature Calculation for Tribological

    E-Print Network [OSTI]

    Harting, Jens

    and passing to third parties. 0 #12;Overview Where to calculate the heat: diesel injection pump First focus in the steel in the meantime of one step It takes some rotations to have the heat penetrate the whole pump even in the event of industrial property rights. We reserve all rights of disposal such as copying

  18. URANIUM MILL TAILINGS RADON FLUX CALCULATIONS

    E-Print Network [OSTI]

    URANIUM MILL TAILINGS RADON FLUX CALCULATIONS PIÑON RIDGE PROJECT MONTROSE COUNTY, COLORADO (EFRC) proposes to license, construct, and operate a conventional acid leach uranium and vanadium mill storage pad, and access roads. The mill is designed to process ore containing uranium and vanadium

  19. SCALE Sensitivity Calculations Using Contributon Theory

    SciTech Connect (OSTI)

    Rearden, Bradley T [ORNL] [ORNL; Perfetti, Chris [University of Michigan] [University of Michigan; Williams, Mark L [ORNL] [ORNL; Petrie Jr, Lester M [ORNL] [ORNL

    2010-01-01

    The SCALE TSUNAMI-3D sensitivity and uncertainty analysis sequence computes the sensitivity of k-eff to each constituent multigroup cross section using adjoint techniques with the KENO Monte Carlo codes. A new technique to simultaneously obtain the product of the forward and adjoint angular flux moments within a single Monte Carlo calculation has been developed and implemented in the SCALE TSUNAMI-3D analysis sequence. A new concept in Monte Carlo theory has been developed for this work, an eigenvalue contributon estimator, which is an extension of previously developed fixed-source contributon estimators. A contributon is a particle for which the forward solution is accumulated, and its importance to the response, which is equivalent to the adjoint solution, is simultaneously accumulated. Thus, the contributon is a particle coupled with its contribution to the response, in this case keff. As implemented in SCALE, the contributon provides the importance of a particle exiting at any energy or direction for each location, energy and direction at which the forward flux solution is sampled. Although currently implemented for eigenvalue calculations in multigroup mode in KENO, this technique is directly applicable to continuous-energy calculations for many other responses such as fixed-source sensitivity analysis and quantification of reactor kinetics parameters. This paper provides the physical bases of eigenvalue contributon theory, provides details of implementation into TSUNAMI-3D, and provides results of sample calculations.

  20. Improved Calculation of Thermal Fission Energy

    E-Print Network [OSTI]

    X. B. Ma; W. L. Zhong; L. Z. Wang; Y. X. Chen; J. Cao

    2013-06-30

    Thermal fission energy is one of the basic parameters needed in the calculation of antineutrino flux for reactor neutrino experiments. It is useful to improve the precision of the thermal fission energy calculation for current and future reactor neutrino experiments, which are aimed at more precise determination of neutrino oscillation parameters. In this article, we give new values for thermal fission energies of some common thermal reactor fuel isotopes, with improvements on three aspects. One is more recent input data acquired from updated nuclear databases. the second one is a consideration of the production yields of fission fragments from both thermal and fast incident neutrons for each of the four main fuel isotopes. The last one is more carefully calculation of the average energy taken away by antineutrinos in thermal fission with the comparison of antineutrino spectrum from different models. The change in calculated antineutrino flux due to the new values of thermal fission energy is about 0.32%, and the uncertainties of the new values are about 50% smaller.

  1. Calculation of Kinetics Parameters for the NBSR

    SciTech Connect (OSTI)

    Hanson A. L.; Diamond D.

    2012-03-06

    The delayed neutron fraction and prompt neutron lifetime have been calculated at different times in the fuel cycle for the NBSR when fueled with both high-enriched uranium (HEU) and low-enriched uranium (LEU) fuel. The best-estimate values for both the delayed neutron fraction and the prompt neutron lifetime are the result of calculations using MCNP5-1.60 with the most recent ENDFB-VII evaluations. The best-estimate values for the total delayed neutron fraction from fission products are 0.00665 and 0.00661 for the HEU fueled core at startup and end-of-cycle, respectively. For the LEU fuel the best estimate values are 0.00650 and 0.00648 at startup and end-of-cycle, respectively. The present recommendations for the delayed neutron fractions from fission products are smaller than the value reported previously of 0.00726 for the HEU fuel. The best-estimate values for the contribution from photoneutrons will remain as 0.000316, independent of the fuel or time in the cycle.The values of the prompt neutron lifetime as calculated with MCNP5-1.60 are compared to values calculated with two other independent methods and the results are in reasonable agreement with each other. The recommended, conservative values of the neutron lifetime for the HEU fuel are 650 {micro}s and 750 {micro}s for the startup and end-of-cycle conditions, respectively. For LEU fuel the recommended, conservative values are 600 {micro}s and 700 {micro}s for the startup and end-of-cycle conditions, respectively. In all three calculations, the prompt neutron lifetime was determined to be longer for the end-of-cycle equilibrium condition when compared to the startup condition. The results of the three analyses were in agreement that the LEU fuel will exhibit a shorter prompt neutron lifetime when compared to the HEU fuel.

  2. Learning Adaptive Leg Cycles Using Fitness Biasing Gary B. Parker

    E-Print Network [OSTI]

    Parker, Gary B.

    computa- tion has been shown to be an effective way to learn gaits for hexapod robots [6]. These robots was effective in providing adaptive gait control for a hexapod robot that went through a series of leg capa) controllers for a hexapod [1]. The controller had foot, backward swing, and forward swing motor neurons; two

  3. Benchmark Test Calculation of a Four-Nucleon Bound State

    E-Print Network [OSTI]

    H. Kamada; A. Nogga; W. Gloeckle; E. Hiyama; M. Kamimura; K. Varga; Y. Suzuki; M. Viviani; A. Kievsky; S. Rosati; J. Carlson; Steven C. Pieper; R. B. Wiringa; P. Navratil; B. R. Barrett; N. Barnea; W. Leidemann; G. Orlandini

    2001-06-25

    In the past, several efficient methods have been developed to solve the Schroedinger equation for four-nucleon bound states accurately. These are the Faddeev-Yakubovsky, the coupled-rearrangement-channel Gaussian-basis variational, the stochastic variational, the hyperspherical variational, the Green's function Monte Carlo, the no-core shell model and the effective interaction hyperspherical harmonic methods. In this article we compare the energy eigenvalue results and some wave function properties using the realistic AV8' NN interaction. The results of all schemes agree very well showing the high accuracy of our present ability to calculate the four-nucleon bound state.

  4. Robotics for Learning

    E-Print Network [OSTI]

    Toh, Dennis; Lim, Matthew; Wee, Loo Kang; Ong, Matthew

    2015-01-01

    Teaching Robotics is about empowering students to create and configure robotics devices and program computers to nurture in students the skill sets necessary to play an active role in society. The robot in Figure 1 focuses on the design of scaffolds and physical assembly methods, coupled with a computer logic program to make that makes it move or behave in a very precise (remote controlled or autonomous) manner. This enables students to investigate, explore and refine the program to affect the robots. The Robotics approach takes into account the increasing popularity of Computer Science and the learning by doing (Schank, Berman, & Macpherson, 1999) approach to solve complex problems and use computers meaningfully in learning (Barron & Darling-Hammond, 2008; Jonassen, Howland, Marra, & Crismond, 2008). In Singapore, teachers and students in Woodlands Ring Secondary and Rulang Primary have incorporated robotics to varying extents into formal and informal curricula. In addition, other less expensive ...

  5. Exact-to-precision generalized perturbation for neutron transport calculation

    SciTech Connect (OSTI)

    Wang, C.; Abdel-Khalik, H. S. [North Carolina State University, 911 Oval Dr., Centennial Campus, Raleigh, NC 27606 (United States)

    2013-07-01

    This manuscript extends the exact-to-precision generalized perturbation theory (E{sub P}GPT), introduced previously, to neutron transport calculation whereby previous developments focused on neutron diffusion calculation only. The E{sub P}GPT collectively denotes new developments in generalized perturbation theory (GPT) that place premium on computational efficiency and defendable accuracy in order to render GPT a standard analysis tool in routine design and safety reactor calculations. EPGPT constructs a surrogate model with quantifiable accuracy which can replace the original neutron transport model for subsequent engineering analysis, e.g. functionalization of the homogenized few-group cross sections in terms of various core conditions, sensitivity analysis and uncertainty quantification. This is achieved by reducing the effective dimensionality of the state variable (i.e. neutron angular flux) by projection onto an active subspace. Confining the state variations to the active subspace allows one to construct a small number of what is referred to as the 'active' responses which are solely dependent on the physics model rather than on the responses of interest, the number of input parameters, or the number of points in the state phase space. (authors)

  6. WIPP Benchmark calculations with the large strain SPECTROM codes

    SciTech Connect (OSTI)

    Callahan, G.D.; DeVries, K.L. [RE/SPEC, Inc., Rapid City, SD (United States)

    1995-08-01

    This report provides calculational results from the updated Lagrangian structural finite-element programs SPECTROM-32 and SPECTROM-333 for the purpose of qualifying these codes to perform analyses of structural situations in the Waste Isolation Pilot Plant (WIPP). Results are presented for the Second WIPP Benchmark (Benchmark II) Problems and for a simplified heated room problem used in a parallel design calculation study. The Benchmark II problems consist of an isothermal room problem and a heated room problem. The stratigraphy involves 27 distinct geologic layers including ten clay seams of which four are modeled as frictionless sliding interfaces. The analyses of the Benchmark II problems consider a 10-year simulation period. The evaluation of nine structural codes used in the Benchmark II problems shows that inclusion of finite-strain effects is not as significant as observed for the simplified heated room problem, and a variety of finite-strain and small-strain formulations produced similar results. The simplified heated room problem provides stratigraphic complexity equivalent to the Benchmark II problems but neglects sliding along the clay seams. The simplified heated problem does, however, provide a calculational check case where the small strain-formulation produced room closures about 20 percent greater than those obtained using finite-strain formulations. A discussion is given of each of the solved problems, and the computational results are compared with available published results. In general, the results of the two SPECTROM large strain codes compare favorably with results from other codes used to solve the problems.

  7. Distance Learning Faculty Handbook

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    ;3. Course Delivery 3.1. Managing Multiple Sites 9 3.2. Things You Should and Should Not Do On Camera 9 3.5. Troubleshooting Technical Issues 19 4. Getting Help 4.1. Logistics and Administration 20 4.2. Course Design 20 4.3. Technical Support 20 5. Faculty Resources 5.1. Institute for Teaching and Learning 21 5.1.1. IDD

  8. Isogeometric analysis in electronic structure calculations

    E-Print Network [OSTI]

    Cimrman, Robert; Kolman, Radek; T?ma, Miroslav; Vacká?, Ji?í

    2016-01-01

    In electronic structure calculations, various material properties can be obtained by means of computing the total energy of a system as well as derivatives of the total energy w.r.t. atomic positions. The derivatives, also known as Hellman-Feynman forces, require, because of practical computational reasons, the discretized charge density and wave functions having continuous second derivatives in the whole solution domain. We describe an application of isogeometric analysis (IGA), a spline modification of finite element method (FEM), to achieve the required continuity. The novelty of our approach is in employing the technique of B\\'ezier extraction to add the IGA capabilities to our FEM based code for ab-initio calculations of electronic states of non-periodic systems within the density-functional framework, built upon the open source finite element package SfePy. We compare FEM and IGA in benchmark problems and several numerical results are presented.

  9. Asymptotic normalization coefficients from ab initio calculations

    E-Print Network [OSTI]

    Kenneth M. Nollett; R. B. Wiringa

    2011-04-14

    We present calculations of asymptotic normalization coefficients (ANCs) for one-nucleon removals from nuclear states of mass numbers 3 to 9. Our ANCs were computed from variational Monte Carlo solutions to the many-body Schroedinger equation with the combined Argonne v18 two-nucleon and Urbana IX three-nucleon potentials. Instead of computing explicit overlap integrals, we applied a Green's function method that is insensitive to the difficulties of constructing and Monte Carlo sampling the long-range tails of the variational wave functions. This method also allows computation of the ANC at the physical separation energy, even when it differs from the separation energy for the Hamiltonian. We compare our results, which for most nuclei are the first ab initio calculations of ANCs, with existing experimental and theoretical results and discuss further possible applications of the technique.

  10. Equation of State from Lattice QCD Calculations

    E-Print Network [OSTI]

    Rajan Gupta

    2011-04-01

    We provide a status report on the calculation of the Equation of State (EoS) of QCD at finite temperature using lattice QCD. Most of the discussion will focus on comparison of recent results obtained by the HotQCD and Wuppertal-Budapest (W-B) collaborations. We will show that very significant progress has been made towards obtaining high precision results over the temperature range of T=150-700 MeV. The various sources of systematic uncertainties will be discussed and the differences between the two calculations highlighted. Our final conclusion is that the lattice results of EoS are getting precise enough to justify being used in the phenomenological analysis of heavy ion experiments at RHIC and LHC.

  11. A Methodology for Calculating Radiation Signatures

    SciTech Connect (OSTI)

    Klasky, Marc Louis; Wilcox, Trevor; Bathke, Charles G.; James, Michael R.

    2015-05-01

    A rigorous formalism is presented for calculating radiation signatures from both Special Nuclear Material (SNM) as well as radiological sources. The use of MCNP6 in conjunction with CINDER/ORIGEN is described to allow for the determination of both neutron and photon leakages from objects of interest. In addition, a description of the use of MCNP6 to properly model the background neutron and photon sources is also presented. Examinations of the physics issues encountered in the modeling are investigated so as to allow for guidance in the user discerning the relevant physics to incorporate into general radiation signature calculations. Furthermore, examples are provided to assist in delineating the pertinent physics that must be accounted for. Finally, examples of detector modeling utilizing MCNP are provided along with a discussion on the generation of Receiver Operating Curves, which are the suggested means by which to determine detectability radiation signatures emanating from objects.

  12. Index calculation by means of harmonic expansion

    E-Print Network [OSTI]

    Imamura, Yosuke

    2015-01-01

    We review derivation of superconformal indices by means of supersymmetric localization and spherical harmonic expansion for 3d N=2, 4d N=1, and 6d N=(1,0) supersymmetric gauge theories. We demonstrate calculation of indices for vector multiplets in each dimensions by analysing energy eigenmodes in S^pxR. For the 6d index we consider the perturbative contribution only. We put focus on technical details of harmonic expansion rather than physical applications.

  13. Index calculation by means of harmonic expansion

    E-Print Network [OSTI]

    Yosuke Imamura

    2015-10-28

    We review derivation of superconformal indices by means of supersymmetric localization and spherical harmonic expansion for 3d N=2, 4d N=1, and 6d N=(1,0) supersymmetric gauge theories. We demonstrate calculation of indices for vector multiplets in each dimensions by analysing energy eigenmodes in S^pxR. For the 6d index we consider the perturbative contribution only. We put focus on technical details of harmonic expansion rather than physical applications.

  14. Transport calculations of antiproton-nucleus interactions

    E-Print Network [OSTI]

    A. B. Larionov; I. N. Mishustin; I. A. Pshenichnov; L. M. Satarov; W. Greiner

    2010-01-15

    The Giessen Boltzmann-Uehling-Uhlenbeck transport model is extended and applied to the antiproton-nucleus interactions in a wide beam momentum range. The model calculations are compared with the experimental data on $\\bar p$-absorption cross sections on nuclei with an emphasis on extraction of the real part of an antiproton optical potential. The possibility of the cold compression of a nucleus by an antiproton in-flight is also considered.

  15. Economic Calculations for the ASHRAE Handbook 

    E-Print Network [OSTI]

    Haberl, J. S.

    1993-01-01

    ESL-TR-93/04-07 Economic Calculations for the ASHRAE Handbook Jeff S. Haberl Dept. of Mechanical Engineering Texas A&M University College Station, TX 77843-3123 For any proposed capital investment, the capital and interest costs, salvage costs... Office, Washington, D.C. BIBLIOGRAPHY ASTM. 1985. Definition of terms relating to building economics. ASTM Standard E933-S5. ASTM, Philadelphia. Kurtz, M. 1984. Handbook of engineering economics: A guide for engineers, technicians, scientists and managers...

  16. Free Energy Calculation in MD Simulation

    E-Print Network [OSTI]

    Nielsen, Steven O.

    Free Energy Calculation in MD Simulation #12;Basic Thermodynamics Helmoholtz free energy A = U ­ TS + i Ni dA = wrev (reversible, const N V T) eq (22.9) McQuarrie & Simon Gibbs free energy G = U;Implication of Free Energy A B Keq = [A]/[B] Keq = exp (-G0 /RT) G0 = -RT ln Keq G = G0 + RT ln Q G > 0

  17. Iron loss calculation for synchronous reluctance machines

    SciTech Connect (OSTI)

    Leonardi, F.; Matsuo, T.; Lipo, T.A. [Univ. of Wisconsin, Madison, WI (United States)

    1995-12-31

    A numerical method for iron loss calculation is presented in this paper. The method is suitable for any synchronous and most dc machines, especially if the current waveforms are known a priori . This technique will be principally useful for high speed machines and in particular for the synchronous reluctance machines and in particular for the synchronous reluctance machine, where the iron losses are often an important issue. The calculation is based on Finite Element Analysis, which provides the flux density waveforms in the iron, and on the Fourier Analysis of these waveforms. Several Finite Element Simulations are necessary to obtain the induced voltage versus time waveforms. To reduce the post-processing time the majority of the elements of the model are grouped together to create super elements. Also the periodicity of the motor can be used to reduce the number of required simulations. The method is applied to the calculation of the iron losses of a synchronous reluctance generator, and a number of interesting results are discussed in the paper.

  18. Agriculture-related radiation dose calculations

    SciTech Connect (OSTI)

    Furr, J.M.; Mayberry, J.J.; Waite, D.A.

    1987-10-01

    Estimates of radiation dose to the public must be made at each stage in the identification and qualification process leading to siting a high-level nuclear waste repository. Specifically considering the ingestion pathway, this paper examines questions of reliability and adequacy of dose calculations in relation to five stages of data availability (geologic province, region, area, location, and mass balance) and three methods of calculation (population, population/food production, and food production driven). Calculations were done using the model PABLM with data for the Permian and Palo Duro Basins and the Deaf Smith County area. Extra effort expended in gathering agricultural data at succeeding environmental characterization levels does not appear justified, since dose estimates do not differ greatly; that effort would be better spent determining usage of food types that contribute most to the total dose; and that consumption rate and the air dispersion factor are critical to assessment of radiation dose via the ingestion pathway. 17 refs., 9 figs., 32 tabs.

  19. Machine LearningMachine Learning SrihariSrihari Linear Dynamical Systems

    E-Print Network [OSTI]

    Machine LearningMachine Learning SrihariSrihari Linear Dynamical Systems Sargur N. Srihari srihari@cedar.buffalo.edu Machine Learning Course: http://www.cedar.buffalo.edu/~srihari/CSE574/index.html #12;Machine LearningMachine;Machine LearningMachine Learning SrihariSrihari Motivation · Simple problem in practical settings

  20. Lessons Learned | Department of Energy

    Energy Savers [EERE]

    Articles: NQA-1 Light Coherent Linac Source National Ignition Facility Spallation Neutron Source National Ignition Facility Other Helpful Links DOE Corporate Lessons Learned...

  1. Learning Tiny Theories Tim Menzies

    E-Print Network [OSTI]

    Menzies, Tim

    Learning Tiny Theories Tim Menzies , Rajesh Gunnalan , Kalaivani Appukutty , Amarnath Srinivasan Engineering, University of British Columbia, Canada {gunnalan|avani|amarnath}@csee

  2. Calculating the mass spectrum of primordial black holes

    E-Print Network [OSTI]

    Sam Young; Christian T. Byrnes; Misao Sasaki

    2015-03-04

    We reinspect the calculation for the mass fraction of primordial black holes (PBHs) which are formed from primordial perturbations, finding that performing the calculation using the comoving curvature perturbation $\\mathcal{R}_{c}$ in the standard way vastly overestimates the number of PBHs, by many orders of magnitude. This is because PBHs form shortly after horizon entry, meaning modes significantly larger than the PBH are unobservable and should not affect whether a PBH forms or not - this important effect is not taken into account by smoothing the distribution in the standard fashion. We discuss alternative methods and argue that the density contrast, $\\Delta$, should be used instead as super-horizon modes are damped by a factor $k^{2}$. We make a comparison between using a Press-Schechter approach and peaks theory, finding that the two are in close agreement in the region of interest. We also investigate the effect of varying the spectral index, and the running of the spectral index, on the abundance of primordial black holes.

  3. Recent developments in no-core shell-model calculations

    E-Print Network [OSTI]

    Petr Navratil; Sofia Quaglioni; Ionel Stetcu; Bruce R. Barrett

    2009-04-02

    We present an overview of recent results and developments of the no-core shell model (NCSM), an ab initio approach to the nuclear many-body problem for light nuclei. In this approach, we start from realistic two-nucleon or two- plus three-nucleon interactions. Many-body calculations are performed using a finite harmonic-oscillator (HO) basis. To facilitate convergence for realistic inter-nucleon interactions that generate strong short-range correlations, we derive effective interactions by unitary transformations that are tailored to the HO basis truncation. For soft realistic interactions this might not be necessary. If that is the case, the NCSM calculations are variational. In either case, the ab initio NCSM preserves translational invariance of the nuclear many-body problem. In this review, we, in particular, highlight results obtained with the chiral two- plus three-nucleon interactions. We discuss efforts to extend the applicability of the NCSM to heavier nuclei and larger model spaces using importance-truncation schemes and/or use of effective interactions with a core. We outline an extension of the ab initio NCSM to the description of nuclear reactions by the resonating group method technique. A future direction of the approach, the ab initio NCSM with continuum, which will provide a complete description of nuclei as open systems with coupling of bound and continuum states, is given in the concluding part of the review.

  4. Recent Developments in No-Core Shell-Model Calculations

    SciTech Connect (OSTI)

    Navratil, P; Quaglioni, S; Stetcu, I; Barrett, B R

    2009-03-20

    We present an overview of recent results and developments of the no-core shell model (NCSM), an ab initio approach to the nuclear many-body problem for light nuclei. In this aproach, we start from realistic two-nucleon or two- plus three-nucleon interactions. Many-body calculations are performed using a finite harmonic-oscillator (HO) basis. To facilitate convergence for realistic inter-nucleon interactions that generate strong short-range correlations, we derive effective interactions by unitary transformations that are tailored to the HO basis truncation. For soft realistic interactions this might not be necessary. If that is the case, the NCSM calculations are variational. In either case, the ab initio NCSM preserves translational invariance of the nuclear many-body problem. In this review, we, in particular, highlight results obtained with the chiral two- plus three-nucleon interactions. We discuss efforts to extend the applicability of the NCSM to heavier nuclei and larger model spaces using importance-truncation schemes and/or use of effective interactions with a core. We outline an extension of the ab initio NCSM to the description of nuclear reactions by the resonating group method technique. A future direction of the approach, the ab initio NCSM with continuum, which will provide a complete description of nuclei as open systems with coupling of bound and continuum states is given in the concluding part of the review.

  5. Fragment Yields Calculated in a Time-Dependent Microscopic Theory...

    Office of Scientific and Technical Information (OSTI)

    Fragment Yields Calculated in a Time-Dependent Microscopic Theory of Fission Citation Details In-Document Search Title: Fragment Yields Calculated in a Time-Dependent Microscopic...

  6. Energy Department Report Calculates Emissions and Costs of Power...

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

    Calculates Emissions and Costs of Power Plant Cycling Necessary for Increased Wind and Solar in the West Energy Department Report Calculates Emissions and Costs of Power Plant...

  7. Illustrative Calculation of Economics for Heat Pump and "Grid...

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

    Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Rate...

  8. Calculation of nuclear reaction cross sections on excited nuclei...

    Office of Scientific and Technical Information (OSTI)

    Calculation of nuclear reaction cross sections on excited nuclei with the coupled-channels method Citation Details In-Document Search Title: Calculation of nuclear reaction cross...

  9. Mobile Learning Environment System (MLES): The Case of Android-based Learning Application on Undergraduates' Learning

    E-Print Network [OSTI]

    Hanafi, Hafizul Fahri

    2012-01-01

    Of late, mobile technology has introduced new, novel environment that can be capitalized to further enrich the teaching and learning process in classrooms. Taking cognizance of this promising setting, a study was undertaken to investigate the impact of such an environment enabled by android platform on the learning process among undergraduates of Sultan Idris Education University, Malaysia; in particular, this paper discusses critical aspects of the design and implementation of the android learning system. Data were collected through a survey involving 56 respondents, and these data were analyzed by using SPSS 12.0. Findings showed that the respondents were very receptive to the interactivity, accessibility, and convenience of the system, but they were quite frustrated with the occasional interruptions due to internet connectivity problems. Overall, the mobile learning system can be utilized as an inexpensive but potent learning tool that complements undergraduates' learning process.

  10. Effective Community-Wide Policy Technical Assistance: The DOE/NREL Approach (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-11-01

    This document compiles lessons learned and provides a step-by-step process for implementing effective policy assistance.

  11. Lessons Learned Quarterly Report, June 2004

    Broader source: Energy.gov [DOE]

    Welcome to the 39th quarterly report on lessons learned in the NEPA process. In this issue we are continuing a multi-part examination of lessons learned from Lessons Learned.

  12. Scaling Reinforcement Learning Paradigms for Motor Control 

    E-Print Network [OSTI]

    Vijayakumar, Sethu; Peters, Jan; Schaal, Stefan

    Reinforcement learning offers a general framework to explain reward related learning in artificial and biological motor control. However, current reinforcement learning methods rarely scale to high dimensional movement systems ...

  13. Lessons Learned Quarterly Report, March 2004

    Office of Energy Efficiency and Renewable Energy (EERE)

    Welcome to the 38th quarterly report on lessons learned in the NEPA process. In this issue we are continuing a multi-part examination of lessons learned from Lessons Learned.

  14. Excited state contamination in nucleon structure calculations

    E-Print Network [OSTI]

    Jeremy Green; Stefan Krieg; John Negele; Andrew Pochinsky; Sergey Syritsyn

    2011-11-28

    Among the sources of systematic error in nucleon structure calculations is contamination from unwanted excited states. In order to measure this systematic error, we vary the operator insertion time and source-sink separation independently. We compute observables for three source-sink separations between 0.93 fm and 1.39 fm using clover-improved Wilson fermions and pion masses as low as 150 MeV. We explore the use of a two-state model fit to subtract off the contribution from excited states.

  15. Calculation of Neutral Beam Injection into SSPX

    SciTech Connect (OSTI)

    Pearlstein, L D; Casper, T A; Hill, D N; LoDestro, L L; McLean, H S

    2006-06-13

    The SSPX spheromak experiment has achieved electron temperatures of 350eV and confinement consistent with closed magnetic surfaces. In addition, there is evidence that the experiment may be up against an operational beta limit for Ohmic heating. To test this barrier, there are firm plans to add two 0.9MW Neutral Beam (NB) sources to the experiment. A question is whether the limit is due to instability. Since the deposited Ohmic power in the core is relatively small the additional power from the beams is sufficient to significantly increase the electron temperature. Here we present results of computations that will support this contention. We have developed a new NB module to calculate the orbits of the injected fast fast-ions. The previous computation made heavy use of tokamak ordering which fails for a tight-aspect-ratio device, where B{sub tor} {approx} B{sub pol}. The model calculates the deposition from the NFREYA package [1]. The neutral from the CX deposition is assumed to be ionized in place, a high-density approximation. The fast ions are then assumed to fill a constant angular momentum orbit. And finally, the fast ions immediately assume the form of a dragged down distribution. Transfer rates are then calculated from this distribution function [2]. The differential times are computed from the orbit times and the particle weights in each flux zone (the sampling bin) are proportional to the time spent in the zone. From this information the flux-surface-averaged profiles are obtained and fed into the appropriate transport equation. This procedure is clearly approximate, but accurate enough to help guide experiments. A major advantage is speed: 5000 particles can be processed in under 4s on our fastest LINUX box. This speed adds flexibility by enabling a ''large'' number of predictive studies. Similar approximations, without the accurate orbit calculation presented here, had some success comparing with experiment and TRANSP [3]. Since our procedure does not have multiple CX and relies on disparate time scales, more detailed understanding requires a ''complete'' NB package such as the NUBEAM [4] module, which follows injected fast ions along with their generations until they enter the main thermal distribution.

  16. Linear Transformation Method for Multinuclide Decay Calculation

    SciTech Connect (OSTI)

    Ding Yuan

    2010-12-29

    A linear transformation method for generic multinuclide decay calculations is presented together with its properties and implications. The method takes advantage of the linear form of the decay solution N(t) = F(t)N{sub 0}, where N(t) is a column vector that represents the numbers of atoms of the radioactive nuclides in the decay chain, N{sub 0} is the initial value vector of N(t), and F(t) is a lower triangular matrix whose time-dependent elements are independent of the initial values of the system.

  17. Distributed Energy Calculator | 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 Jump to: navigation,DepartmentCalculator Jump to: navigation, search

  18. Cool Roof Calculator | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company)| Open(Evans, EtInformationRoof Calculator Jump to:

  19. 2004-01-2440 Reinforcement Learning in the Control of a Simulated Life

    E-Print Network [OSTI]

    Pyeatt, Larry

    learning technique, to the task of controlling the water recovery system of a simulated ALS. The RL agent learns an effective control strategy that extends the mission length to the point that lack of water for finding an optimal control policy for the water recovery sub- system of an ALS system. The control policy

  20. Professor Lisa A. Pruitt Outreach Education for Development of Leadership, Mentorship, and Life-long Learning

    E-Print Network [OSTI]

    Keaveny, Tony

    and middle schools. Undergraduates learn how to work in teams and communicate effectively, they learn key in the broad field of engineering. The high school students are also involved with team-based design projects, this conference brings forth several hundred high school students who are interested in a career path

  1. A Robust Learning Algorithm Based on SURF and PSM for Facial Expression Recognition

    E-Print Network [OSTI]

    Takiguchi, Tetsuya

    A Robust Learning Algorithm Based on SURF and PSM for Facial Expression Recognition Jinhui Chen is based on the Perturbed Subspace Method (PSM), which is an effective way to improve the robustness of learning machines. First, PSM is used to extend the training data, which allows for the generation of ideal

  2. %POWER: A SIMPLE MACRO FOR POWER AND SAMPLE SIZE CALCULATIONS Kristin R. Latour

    E-Print Network [OSTI]

    Friendly, Michael

    %POWER: A SIMPLE MACRO FOR POWER AND SAMPLE SIZE CALCULATIONS Kristin R. Latour Abstract Statisticians often desire to investigate the power of statistical effect tests, or to estimate the sample size required to provide a significant effect test. This paper describes the macro POWER which provides

  3. Realistic Shell-Model Calculations for Nuclei in the Region of Shell Closures off Stability

    E-Print Network [OSTI]

    A. Covello; L. Coraggio; A. Gargano

    1998-07-24

    We have performed realistic shell-model calculations for nuclei around doubly magic 100Sn and 132Sn using an effective interaction derived from the Bonn A nucleon-nucleon potential. The results are in remarkably good agreement with the experimental data showing the ability of our effective interaction to provide an accurate description of nuclear structure properties.

  4. Bending stiffness calculation for nanosize structures E. A. IVANOVA, A. M. KRIVTSOV and N. F. MOROZOV

    E-Print Network [OSTI]

    Krivtsov, Anton M.

    Bending stiffness calculation for nanosize structures E. A. IVANOVA, A. M. KRIVTSOV and N. F of corrections taking into account the scale effects. The presented paper is devoted to theoretical investigation of the influence of the scale effects on the bending stiffness of a nanocrystal, which is extended in one direction

  5. Learning | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRDEnergyTurbine bladesJune 22, 2015BoydLearn More

  6. Early Lessons Learned

    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 Room NewsInformation Current HABFES Science Network Requirements Report ofEnergy andLessons Learned

  7. Calculating chiller emissions and source energy use

    SciTech Connect (OSTI)

    Aumann, D.J. [Bevilacqua-Knight, Inc., Oakland, CA (United States)

    1996-12-31

    Various analyses have compared the emissions and over-all source energy use of different chillers. However, these analyses are typically based on national or regional electric power plant annual averages or rely on outdated emissions data that do not account for scrubbers and other pollution controls applied in response to the 1990 Clean Air Act Amendments (CAAA). Other analyses have used power generation data for a specific utility but require hourly generation profiles, which are difficult to obtain. Thus, many of the existing models are either too general to provide valuable information or too complex to be practical for the day-to-day applications engineers face. This paper introduces a simple yet reliable hand calculation method for estimating the combustion-related emissions and source energy use of gas and electric chillers. The user needs to supply only two inputs: annual chiller system energy use and the utility`s power generation mix during chiller operation. The analysis supplies electric power plant heat rates and emission factors. Referenced guidelines are documented for all calculation inputs.

  8. System Design - Lessons Learned, Generic Concepts, Characteristics...

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

    Design - Lessons Learned, Generic Concepts, Characteristics & Impacts System Design - Lessons Learned, Generic Concepts, Characteristics & Impacts Presented at the DOE-DOD...

  9. Adaptation, Learning, and Optimization over

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Adaptation, Learning, and Optimization over Networks Ali H. Sayed University of California at Los 2014 A. H. Sayed DOI: 10.1561/2200000051 Adaptation, Learning, and Optimization over Networks Ali H . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6 Notation and Symbols . . . . . . . . . . . . . . . . . . . . 8 2 Optimization by Single Agents

  10. Bachelor of Teaching & Learning (Primary)

    E-Print Network [OSTI]

    Hickman, Mark

    Primary. 2015 Bachelor of Teaching & Learning (Primary) College of Education Education #12 of Teaching and Learning (Primary) Primary Teaching Primary teaching (for Years 1­8, ages 5­13) allows you to use your energy, commitment and creativity in a rewarding and satisfying career, which can make a real

  11. Kinematic Motor Learning Wolfram Schenck

    E-Print Network [OSTI]

    Moeller, Ralf

    Kinematic Motor Learning Wolfram Schenck Computer Engineering Group Faculty of Technology Bielefeld-521-106-6440 mail: wschenck@ti.uni-bielefeld.de Abstract This paper focuses on adaptive motor control in the kinematic domain. Several motor learning strategies from the literature are adopted to kinematic problems

  12. Fast learning from -mixing Observations

    E-Print Network [OSTI]

    Steinwart, Ingo

    rates for some learning methods such as empirical risk minimization (ERM), least squares support vector and quantile regression. It turns out that for i.i.d. processes our learning rates for ERM and SVMs for empirical risk minimization (ERM) when the sampling sequence satisfies an -mixing condition. More recently

  13. EDUCATION 01 THE LEARNING BRAIN

    E-Print Network [OSTI]

    1 EDUCATION 01 THE LEARNING BRAIN: INTRODUCTION TO CHILD DEVELOPEMENT AND EDUCATION FALL of the typically developing learning brain. Course Goals · Introduce the developing field of Mind, Brain is to explore the connections between brain research and education. The assignment has 3 parts. 1) Find

  14. Benchmark calculation of inclusive electromagnetic responses in the four-body nuclear system

    E-Print Network [OSTI]

    Ionel Stetcu; Sofia Quaglioni; Sonia Bacca; Bruce R. Barrett; Calvin W. Johnson; Petr Navratil; Nir Barnea; Winfried Leidemann; Giuseppina Orlandini

    2006-05-23

    Both the no-core shell model and the effective interaction hyperspherical harmonic approaches are applied to the calculation of different response functions to external electromagnetic probes, using the Lorentz integral transform method. The test is performed on the four-body nuclear system, within a simple potential model. The quality of the agreement in the various cases is discussed, together with the perspectives for rigorous ab initio calculations of cross sections of heavier nuclei.

  15. Calculated fission-fragment yield systematics in the region 74

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

    Möller, Peter; Randrup, Jørgen

    2015-04-01

    Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ? 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near ¹³²Sn it was assumed that all systems below A ? 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near ¹³²Sn. But the finding by Andreyev et al.more »[Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ¹??Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ¹??Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ? Z ? 85 and 100 ? N ? 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the main aspects of our results in terms of “nuclear-chart” plots showing calculated degrees of asymmetry versus N and Z. Conclusions: Experimental data in this region are rare: only ten or so yield distributions have been measured, some with very limited statistics. We agree with several measurements with higher statistics. Regions where there might be differences between our calculated results and measurements lie near the calculated transition line between symmetric and asymmetric fission. To draw more definite conclusions about the accuracy of the present implementation of the Brownian shape-motion approach in this region experimental data, with reliable statistics, for a fair number of suitably located additional nuclides are clearly needed. Because the nuclear potential-energy structure is so different in this region compared to the actinide region, additional experimental data together with fission theory studies that incorporate additional, dynamical aspects should provide much new insight.« less

  16. Zero energy scattering calculation in Euclidean space

    E-Print Network [OSTI]

    Carbonell, J

    2016-01-01

    We show that the Bethe-Salpeter equation for the scattering amplitude in the limit of zero incident energy can be transformed into a purely Euclidean form, as it is the case for the bound states. The decoupling between Euclidean and Minkowski amplitudes is only possible for zero energy scattering observables and allows determining the scattering length from the Euclidean Bethe-Salpeter amplitude. Such a possibility strongly simplifies the numerical solution of the Bethe-Salpeter equation and suggests an alternative way to compute the scattering length in Lattice Euclidean calculations without using the Luscher formalism. The derivations contained in this work were performed for scalar particles and one-boson exchange kernel. They can be generalized to the fermion case and more involved interactions.

  17. Followup calculations for the UVAR LEU conversion

    SciTech Connect (OSTI)

    Rydin, R.A.; Hosticka, B.; Burns, T. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Mechanical, Aerospace and Nuclear Engineering] [and others

    1995-12-31

    The UVAR reactor was successfully converted to LEU fuel in April 1994. Void coefficient measurements were made on the 4-by-4 fully-graphite-reflected LEU-1 core configuration, and an isothermal temperature coefficient measurement was made on the operational 4-by-5 partially-graphite-reflected LEU-2 core configuration. Both of these experiments have now been modeled in their critical configurations using the 3DBUM code. The LEU cores were also modeled using the Monte Carlo code MCNP in order to obtain a neutron/gamma source for BNCT filter design calculations. Advanced BNCT filters have been evaluated using both MCNP and the discrete ordinates code DORT. The results indicate that the UVAR would be an ideal source for the BNCT treatment of brain tumors.

  18. Benchmark On Sensitivity Calculation (Phase III)

    SciTech Connect (OSTI)

    Ivanova, Tatiana [IRSN; Laville, Cedric [IRSN; Dyrda, James [Atomic Weapons Establishment; Mennerdahl, Dennis [E. Mennerdahl Systems; Golovko, Yury [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Raskach, Kirill [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Tsiboulia, Anatoly [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Lee, Gil Soo [Korea Institute of Nuclear Safety (KINS); Woo, Sweng-Woong [Korea Institute of Nuclear Safety (KINS); Bidaud, Adrien [Labratoire de Physique Subatomique et de Cosmolo-gie (LPSC); Patel, Amrit [NRC; Bledsoe, Keith C [ORNL; Rearden, Bradley T [ORNL; Gulliford, J. [OECD Nuclear Energy Agency

    2012-01-01

    The sensitivities of the keff eigenvalue to neutron cross sections have become commonly used in similarity studies and as part of the validation algorithm for criticality safety assessments. To test calculations of the sensitivity coefficients, a benchmark study (Phase III) has been established by the OECD-NEA/WPNCS/EG UACSA (Expert Group on Uncertainty Analysis for Criticality Safety Assessment). This paper presents some sensitivity results generated by the benchmark participants using various computational tools based upon different computational methods: SCALE/TSUNAMI-3D and -1D, MONK, APOLLO2-MORET 5, DRAGON-SUSD3D and MMKKENO. The study demonstrates the performance of the tools. It also illustrates how model simplifications impact the sensitivity results and demonstrates the importance of 'implicit' (self-shielding) sensitivities. This work has been a useful step towards verification of the existing and developed sensitivity analysis methods.

  19. A primer for criticality calculations with DANTSYS

    SciTech Connect (OSTI)

    Busch, R.D.

    1997-08-01

    With the closure of many experimental facilities, the nuclear safety analyst has to rely on computer calculations to identify safe limits for the handling and storage of fissile materials. Although deterministic methods often do not provide exact models of a system, a substantial amount of reliable information on nuclear systems can be obtained using these methods if the user understands their limitations. To guide criticality specialists in this area, the Nuclear Criticality Safety Group at the University of New Mexico (UNM) in cooperation with the Radiation Transport Group at Los Alamos National Laboratory (LANL) has designed a primer to help the analyst understand and use the DANTSYS deterministic transport code for nuclear criticality safety analyses. DANTSYS is the new name of the group of codes formerly known as: ONEDANT, TWODANT, TWOHEX, TWOGQ, and THREEDANT. The primer is designed to teach bu example, with each example illustrating two or three DANTSYS features useful in criticality analyses. Starting with a Quickstart chapter, the primer gives an overview of the basic requirements for DANTSYS input and allows the user to quickly run a simple criticality problem with DANTSYS. Each chapter has a list of basic objectives at the beginning identifying the goal of the chapter and the individual DANTSYS features covered in detail in the chapter example problems. On completion of the primer, it is expected that the user will be comfortable doing criticality calculations with DANTSYS and can handle 60--80% of the situations that normally arise in a facility. The primary provides a set of input files that can be selective modified by the user to fit each particular problem.

  20. Introduction Angluin's Learning Approach Learning Design Models Dedicated Tool: Smyle Conclusion Replaying Play-In Play-Out

    E-Print Network [OSTI]

    Ábrahám, Erika

    Introduction Angluin's Learning Approach Learning Design Models Dedicated Tool: Smyle Conclusion Approach Learning Design Models Dedicated Tool: Smyle Conclusion Outline 1 Introduction 2 Angluin's Learning Approach 3 Learning Design Models 4 Dedicated Tool: Smyle 5 Conclusion #12;Introduction Angluin

  1. Coupled-channels calculations of $^{16}$O+$^{16}$O fusion

    E-Print Network [OSTI]

    H. Esbensen

    2008-05-13

    Fusion data for $^{16}$O+$^{16}$O are analyzed by coupled-channels calculations. It is shown that the calculated cross sections are sensitive to the couplings to the $2^+$ and $3^-$ excitation channels even at low energies, where these channels are closed. The sensitivity to the ion-ion potential is investigated by applying a conventional Woods-Saxon potential and the M3Y+repulsion potential, consisting of the M3Y double-folding potential and a repulsive term that simulates the effect of the nuclear incompressibility. The best overall fit to the data is obtained with a M3Y+repulsion potential which produces a shallow potential in the entrance channel. The stepwise increase in measured fusion cross sections at high energies is also consistent with such a shallow potential. The steps are correlated with overcoming the barriers for the angular momenta $L$ = 12, 14, 16, and 18. To improve the fit to the low-energy data requires a shallower potential and this causes a even stronger hindrance of fusion at low energies. It is therefore difficult, based on the existing fusion data, to make an accurate extrapolation to energies that are of interest to astrophysics.

  2. A Nursery and Greenhouse Online Knowledge Center: Learning Opportunities

    E-Print Network [OSTI]

    Virginia Tech

    A Nursery and Greenhouse Online Knowledge Center: Learning Opportunities for Sustainable Practice and greenhouse operations. This is particularly important because these production facilities are typically and greenhouse industry. A web-based knowledge center provides the most cost-effective mechanism for information

  3. Pricing to Accelerate Demand Learning in Dynamic Assortment ...

    E-Print Network [OSTI]

    2013-03-16

    tomization and shorter product life cycles, make predicting demand more ... tailers are at the end of the supply chain and form an essential element in a ...... Figure 6 shows the effectiveness of active learning in terms of closing the gap between.

  4. BDNF Facilitates Instrumental Learning and Spinal Plasticity In Vivo. 

    E-Print Network [OSTI]

    Niemerski, Ashley

    2014-01-27

    for intrathecal, localized delivery to the injured spinal cord. Biomaterials 27, 2370-9. Huie, J.R., Garraway, S.M., Hoy, K.C.,& Grau, J.W. (2012) Learning in the spinal cord: BDNF mediates the beneficial effects of instrumental training. Neuroscience, 200, 74...

  5. Post-Training Support for Learning Technology Sam Snoddy, Jr.

    E-Print Network [OSTI]

    Novick, David G.

    Post-Training Support for Learning Technology Sam Snoddy, Jr. Cloudcroft Schools P.O. Box 198 the effects of post-training support, we studied the introduction of new gradebook software in a public high school. The school's 108 faculty members received training on the software, and approximately half

  6. Batch-mode Supervised Learning Linear regression

    E-Print Network [OSTI]

    Wehenkel, Louis

    Batch-mode Supervised Learning Linear regression Applied inductive learning - Lecture 3 Louis (& Pierre Geurts)AIA... (1/19) #12;Batch-mode Supervised Learning Linear regression Batch-mode Supervised Learning Linear regression Least mean square error solution Regularization and algorithmics Residual

  7. Interactive Q-Learning Eric B. Laber

    E-Print Network [OSTI]

    Davidian, Marie

    . Artificial Intelligence and Reinforcement Learning (autonomous helicopter, drones, etc., Ng 2003) 2

  8. 1Building virtual learning communities and the learning of mathematics teacher student

    E-Print Network [OSTI]

    Spagnolo, Filippo

    1 1Building virtual learning communities and the learning of mathematics teacher student Salvador of learning for student teachers. Firstly, I shall describe the characteristics of the design of learning trajectories in a video-based learning environment focusing on the exploration of mathematics teaching to help

  9. Assessing Student Learning We typically assess student learning in terms of their grades on

    E-Print Network [OSTI]

    Champagne, Frances A.

    need to be student-focused rather than instructor-focused. Focus on the learning resulting fromAssessing Student Learning We typically assess student learning in terms of their grades on quizzes should be linked to our learning objectives. To properly assess student learning, you need to know what

  10. E ective Neuronal Learning with Ine ective Hebbian Learning Rules

    E-Print Network [OSTI]

    Chechik, Gal

    ; Palm & Sommer, 1996) derived the learn- ing rule that maximizes the network memory capacity, and showed of papers (Palm & Sommer, 1988; Palm, 1992; Palm & Sommer, 1996), Palm and Sommer have further studied

  11. Development of a Roof Savings Calculator

    SciTech Connect (OSTI)

    New, Joshua Ryan [ORNL] [ORNL; Miller, William A [ORNL] [ORNL; Desjarlais, Andre Omer [ORNL] [ORNL; Erdem, Ender [Lawrence Berkeley National Laboratory (LBNL)] [Lawrence Berkeley National Laboratory (LBNL); Huang, Joe [Lawrence Berkeley National Laboratory (LBNL)] [Lawrence Berkeley National Laboratory (LBNL)

    2011-01-01

    A web-based Roof Savings Calculator (RSC) has been deployed for the Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs the latest web technologies and usability design to provide an easy input interface to an annual simulation of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim. Building defaults were assigned and can provide estimated annual energy and cost savings after the user selects nothing more than building location. In addition to cool reflective roofs, the RSC tool can simulate multiple roof types at arbitrary inclinations. There are options for above sheathing ventilation, radiant barriers, and low-emittance surfaces. The tool also accommodates HVAC ducts either in the conditioned space or in the attic with custom air leakage rates. Multiple layers of building materials, ceiling and deck insulation, and other parameters can be compared side-by-side to generate an energy/cost savings estimate between two buildings. The RSC tool was benchmarked against field data for demonstration homes in Ft. Irwin, CA.

  12. Development of a Roof Savings Calculator

    SciTech Connect (OSTI)

    New, Joshua Ryan [ORNL] [ORNL; Miller, William A [ORNL] [ORNL; Huang, Joe [Lawrence Berkeley National Laboratory (LBNL)] [Lawrence Berkeley National Laboratory (LBNL); Erdem, Ender [Lawrence Berkeley National Laboratory (LBNL)] [Lawrence Berkeley National Laboratory (LBNL)

    2011-01-01

    A web-based Roof Savings Calculator (RSC) has been deployed for the Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs the latest web technologies and usability design to provide an easy input interface to an annual simulation of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim. Building defaults were assigned and can provide annual energy and cost savings after the user selects nothing more than building location. In addition to cool reflective roofs, the RSC tool can simulate multiple roof types at arbitrary inclinations. There are options for above sheathing ventilation, radiant barriers and low-emittance surfaces. The tool also accommodates HVAC ducts either in the conditioned space or in the attic with custom air leakage rates. Multiple layers of thermal mass, ceiling insulation and other parameters can be compared side-by-side to generate energy/cost savings between two buildings. The RSC tool was benchmarked against field data for demonstration homes in Ft Irwin, CA.

  13. Visual Analytics for Roof Savings Calculator Ensembles

    SciTech Connect (OSTI)

    Jones, Chad [University of California, Davis] [University of California, Davis; New, Joshua Ryan [ORNL] [ORNL; Sanyal, Jibonananda [ORNL] [ORNL; Ma, Kwan-Liu [University of California, Davis] [University of California, Davis

    2012-01-01

    The Roof Savings Calculator (RSC) has been deployed for DOE as an industry-consensus, web-based tool for easily running complex building energy simulations. These simulations allow both homeowners and experts to determine building-specific cost and energy savings for modern roof and attic technologies. Using a database of over 3 million RSC simulations for different combinations of parameters, we have built a visual analytics tool to assist in the exploration and identification of features in the data. Since the database contains multiple variables, both categorical and continuous, we employ a coordinated multi-view approach that allows coordinated feature exploration through multiple visualizations at once. The main component of our system, a parallel coordinates view, has been adapted to handle large-scale, mixed data types as are found in RSC simulations. Other visualizations include map coordinated plots, high dynamic range (HDR) line plot rendering, and an intuitive user interface. We demonstrate these techniques with several use cases that have helped identify software and parametric simulation issues.

  14. Effective Community-Wide Policy Technical Assistance: The DOE/NREL Approach (Brochure), NREL (National Renewable Energy Laboratory)

    Broader source: Energy.gov [DOE]

    This document compiles lessons learned and provides a step-by-step process for implementing effective policy assistance.

  15. Enhancing Curriculum Acceptance among Students with E-learning 2.0

    E-Print Network [OSTI]

    Lakhtaria, Kamaljit I; Gandhi, Ankita

    2010-01-01

    E-learning; enhanced by communicating and interacting is becoming increasingly accepted and this puts Web 2.0 at the center of the new educational technologies. E-Learning 2.0 emerges as an innovative method of online learning for its incorporation of Web 2.0 tools. For any academic study, the curriculum provides overview of intact learning area. The Curriculum provides overview to content of the Subject. Many institutions place student interaction as a priority of their online curriculum design. It is proved that interaction has a great effect on the students' involvement in learning and acceptance of Curriculum. Students are accepting curriculum that is designed by teacher; whereas E-learning 2.0 enabled Curriculum management system allows student to involve in learning activities. It works as a stimulus and increases their dedication to the Curriculum. While Institute adapts E-Learning 2.0 as Learning Management System, it also provides Social Networking services and provides direct and transparent interac...

  16. The Fernald Closure Project: Lessons Learned

    SciTech Connect (OSTI)

    Murphy, Cornelius M.; Carr, Dennis

    2008-01-15

    For nearly 37 years, the U.S. Department of Energy site at Fernald - near Cincinnati, Ohio - produced 230,000 metric tons (250,000 short tons) of high-purity, low-enriched uranium for the U.S. Defense Program, generating more than 5.4 million metric tons (6 million short tons) of liquid and solid waste as it carried out its Cold War mission. The facility was shut down in 1989 and clean up began in 1992, when Fluor won the contract to clean up the site. Cleaning up Fernald and returning it to the people of Ohio was a $4.4 billion mega environmental-remediation project that was completed in October 2006. Project evolved through four phases: - Conducting remedial-investigation studies to determine the extent of damage to the environment and groundwater at, and adjacent to, the production facilities; - Selecting cleanup criteria - final end states that had to be met that protect human health and the environment; - Selecting and implementing the remedial actions to meet the cleanup goals; - Executing the work in a safe, compliant and cost-effective manner. In the early stages of the project, there were strained relationships - in fact total distrust - between the local community and the DOE as a result of aquifer contamination and potential health effects to the workers and local residents. To engage citizens and interested stakeholders groups in the decision-making process, the DOE and Fluor developed a public-participation strategy to open the channels of communication with the various parties: site leadership, technical staff and regulators. This approach proved invaluable to the success of the project, which has become a model for future environmental remediation projects. This paper will summarize the history and shares lessons learned: the completion of the uranium-production mission to the implementation of the Records of Decision defining the cleanup standards and the remedies achieved. Lessons learned fall into ten categories: - Regulatory approach with end-state determinations; - Interaction with stakeholders; - The balanced approach - on-site and off-site waste-disposal alternatives; - The contracting model; - Site safety performance; - Effectiveness of cleanup remedies; - Worker training and transition; - Client interface; - Cost and schedule performance; - Legacy management. Lessons learned can be applied: While each site and project has its own issues, the various lessons learned from the Fernald Closure Project, when taken from a global perspective, can be applied to similar efforts so that pitfalls are avoided and efficiencies realized.

  17. Cost-effective ecological restoration

    E-Print Network [OSTI]

    2015-01-01

    whether the cost-effectiveness index in the all seed mixesRestoration cost-effectiveness (index calculated as percentwith the highest cost-effectiveness index values were drill

  18. Handbook of Industrial Engineering Equations, Formulas, and Calculations

    SciTech Connect (OSTI)

    Badiru, Adedeji B; Omitaomu, Olufemi A

    2011-01-01

    The first handbook to focus exclusively on industrial engineering calculations with a correlation to applications, Handbook of Industrial Engineering Equations, Formulas, and Calculations contains a general collection of the mathematical equations often used in the practice of industrial engineering. Many books cover individual areas of engineering and some cover all areas, but none covers industrial engineering specifically, nor do they highlight topics such as project management, materials, and systems engineering from an integrated viewpoint. Written by acclaimed researchers and authors, this concise reference marries theory and practice, making it a versatile and flexible resource. Succinctly formatted for functionality, the book presents: Basic Math Calculations; Engineering Math Calculations; Production Engineering Calculations; Engineering Economics Calculations; Ergonomics Calculations; Facility Layout Calculations; Production Sequencing and Scheduling Calculations; Systems Engineering Calculations; Data Engineering Calculations; Project Engineering Calculations; and Simulation and Statistical Equations. It has been said that engineers make things while industrial engineers make things better. To make something better requires an understanding of its basic characteristics and the underlying equations and calculations that facilitate that understanding. To do this, however, you do not have to be computational experts; you just have to know where to get the computational resources that are needed. This book elucidates the underlying equations that facilitate the understanding required to improve design processes, continuously improving the answer to the age-old question: What is the best way to do a job?

  19. Enhancing the Engineering Curriculum: Defining Discovery Learning at Marquette University

    E-Print Network [OSTI]

    Nagurka, Mark L.

    learning is a form of student-centered learning in which the focus shifts from the teacher to the learn, student-centered learning, active learning. I. INTRODUCTION The College of Engineering at Marquette forms of experiential learning. Other schools include student-centered learning methods, such as active

  20. Learning task-specific similarity

    E-Print Network [OSTI]

    Shakhnarovich, Gregory

    2006-01-01

    The right measure of similarity between examples is important in many areas of computer science. In particular it is a critical component in example-based learning methods. Similarity is commonly defined in terms of a ...

  1. Learning in the labor market

    E-Print Network [OSTI]

    Li, Jin, Ph. D. Massachusetts Institute of Technology

    2007-01-01

    This thesis is a collection of three independent essays that study the implication of learning on labor mobility, labor supply, wage distribution, wage dynamics, and allocations of workers under different assumptions about ...

  2. Project PROCEED and Continuous Learning 

    E-Print Network [OSTI]

    Cohen, K. C.

    1982-01-01

    The concept of learning as a continuous activity, meshing appropriately with one's work environment around real on-the-job problem-solving needs, is gaining increasing popularity. Project PROCEED (Program for Continuing ...

  3. SPANISH STUDIES Program Learning Outcomes

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    SPANISH STUDIES Program Learning Outcomes 1. Students will achieve advanced language proficiency in Spanish: they will have the ability to narrate language and literacy skills in Spanish: Students will acquire a foundation

  4. DOE Online Learning Center (OLC)

    Broader source: Energy.gov [DOE]

    DOE Online Learning Center offers SkillSoft online courses that can lead to business, desktop and IT professional certifications. The online classes can be accessed 365 days a year from any desktop and are completed at your own pace

  5. Marquette University Learning Assessment Plan

    E-Print Network [OSTI]

    Reid, Scott A.

    (analytical, inorganic, organic, and physical chemistry). Grades in three of the designated core courses (CHEMMarquette University Learning Assessment Plan Chemistry Program: Chemistry Degree: M.S. Date to a scientific audience. Present chemistry research accurately Utilize appropriate presentation graphics; Answer

  6. Supporting Calculations For Submerged Bed Scrubber Condensate Disposal Preconceptual Study

    SciTech Connect (OSTI)

    Pajunen, A. J.; Tedeschi, A. R.

    2012-09-18

    This document provides supporting calculations for the preparation of the Submerged Bed Scrubber Condensate Disposal Preconceptual Study report The supporting calculations include equipment sizing, Hazard Category determination, and LAW Melter Decontamination Factor Adjustments.

  7. A comparison of material balance calculations based on equilibrium ratios with Schilthuis balance calculations 

    E-Print Network [OSTI]

    Clanton, John L

    1956-01-01

    . CALCULATION OF OIL INITIALLY IN PLACE BY SCHILTHUIS MATERIAL BALANCE . . . ZO 6. MATERIAL BALANCE BASED ON EQUILIBRIUM CONSTANTS 7. DISCUSSION OF RESULTS 8. CONCLUSIONS 9. ACKNOWLEDGEMENT 10. REFERENCES 11. BIBLIOGRAPHY , 36 . 38 39 LIST... OF FIGURES AND TABLES FIGURES FOLLOWING PAGE Isovol Map of Scurry Reef Reservoir 22 Histogram of Production, Gas-Oil Ratio, Pressure and Water Injection History. Shrinkage of Scurry Reef Reservoir Oil, Scurry County, Texas. Gas Volumes Liberated from...

  8. TDHF fusion calculations for spherical+deformed systems

    E-Print Network [OSTI]

    A. S. Umar; V. E. Oberacker

    2006-04-04

    We outline a formalism to carry out TDHF calculations of fusion cross sections for spherical + deformed nuclei. The procedure incorporates the dynamic alignment of the deformed nucleus into the calculation of the fusion cross section. The alignment results from multiple E2/E4 Coulomb excitation of the ground state rotational band. Implications for TDHF fusion calculations are discussed. TDHF calculations are done in an unrestricted three-dimensional geometry using modern Skyrme force parametrizations.

  9. Application of RAD-BCG calculator to Hanford's 300 area shoreline characterization dataset

    SciTech Connect (OSTI)

    Antonio, Ernest J.; Poston, Ted M.; Tiller, Brett L.; Patton, Gene W.

    2003-07-01

    Abstract. In 2001, a multi-agency study was conducted to characterize potential environmental effects from radiological and chemical contaminants on the near-shore environment of the Columbia River at the 300 Area of the U.S. Department of Energy’s Hanford Site. Historically, the 300 Area was the location of nuclear fuel fabrication and was the main location for research and development activities from the 1940s until the late 1980s. During past waste handling practices uranium, copper, and other heavy metals were routed to liquid waste streams and ponds near the Columbia River shoreline. The Washington State Department of Health and the Pacific Northwest National Laboratory’s Surface Environmental Surveillance Project sampled various environmental components including river water, riverbank spring water, sediment, fishes, crustaceans, bivalve mollusks, aquatic insects, riparian vegetation, small mammals, and terrestrial invertebrates for analyses of radiological and chemical constituents. The radiological analysis results for water and sediment were used as initial input into the RAD-BCG Calculator. The RAD-BCG Calculator, a computer program that uses an Excel® spreadsheet and Visual Basic® software, showed that maximum radionuclide concentrations measured in water and sediment were lower than the initial screening criteria for concentrations to produce dose rates at existing or proposed limits. Radionuclide concentrations measured in biota samples were used to calculate site-specific bioaccumulation coefficients (Biv) to test the utility of the RAD-BCG-Calculator’s site-specific screening phase. To further evaluate site-specific effects, the default Relative Biological Effect (RBE) for internal alpha particle emissions was reduced by half and the program’s kinetic/allometric calculation approach was initiated. The subsequent calculations showed the initial RAD-BCG Calculator results to be conservative, which is appropriate for screening purposes.

  10. hp calculators HP 50g Confidence Intervals Real Estate

    E-Print Network [OSTI]

    Vetter, Frederick J.

    hp calculators HP 50g Confidence Intervals ­ Real Estate The STAT menu Confidence Intervals Practice finding confidence intervals ­ Real Estate #12;hp calculators HP 50g Confidence Intervals ­ Real Estate hp calculators - 2 - HP 50g Confidence Intervals ­ Real Estate The STAT menu The Statistics menu

  11. hp calculators HP 50g Hypothesis tests Real Estate

    E-Print Network [OSTI]

    Vetter, Frederick J.

    hp calculators HP 50g Hypothesis tests ­ Real Estate The STAT menu Hypothesis tests Practice evaluating hypothesis tests ­ Real Estate #12;hp calculators HP 50g Hypothesis tests ­ Real Estate hp calculators - 2 - HP 50g Hypothesis tests ­ Real Estate The STAT menu The Statistics menu is accessed from

  12. The melting lines of model systems calculated from coexistence simulations

    E-Print Network [OSTI]

    Song, Xueyu

    rapidly as a function of the potential cutoff, indicating that long-range corrections to the free energies of the solid and liquid phases very nearly cancel. This approach provides an alternative to traditional methods them. Tradition- ally, these calculations have been made using free energy calculations: by calculating

  13. Parents Provide Children with Social Cues for Word Learning

    E-Print Network [OSTI]

    Kyger, Mariel F.

    2013-01-01

    2007). A unified model of early word learning: IntegratingSmith, L. B. (2007). Rapid word learning under uncertaintyM. A. (2001). Learning words through overhearing. Child

  14. Blasting through lattice calculations using CUDA

    E-Print Network [OSTI]

    Kipton Barros; Ronald Babich; Richard Brower; Michael A. Clark; Claudio Rebbi

    2008-10-29

    Modern graphics hardware is designed for highly parallel numerical tasks and provides significant cost and performance benefits. Graphics hardware vendors are now making available development tools to support general purpose high performance computing. Nvidia's CUDA platform, in particular, offers direct access to graphics hardware through a programming language similar to C. Using the CUDA platform we have implemented a Wilson-Dirac operator which runs at an effective 68 Gflops on the Tesla C870. The recently released GeForce GTX 280 runs this same code at 92 Gflops, and we expect further improvement pending code optimization.

  15. Relativistic configuration-interaction calculation of energy levels of core-excited states in lithium-like ions: argon through krypton

    E-Print Network [OSTI]

    Yerokhin, V A

    2012-01-01

    Large-scale relativistic configuration-interaction calculation of energy levels of core-excited states of lithium-like ions is presented. Quantum electrodynamic, nuclear recoil, and frequency-dependent Breit corrections are included in the calculation. The approach is consistently applied for calculating all $n=2$ core-excited states for all lithium-like ions starting from argon ($Z = 18$) and ending with krypton ($Z = 36$). The results obtained are supplemented with systematical estimations of calculation errors and omitted effects.

  16. National Wind Distance Learning Collaborative

    SciTech Connect (OSTI)

    Dr. James B. Beddow

    2013-03-29

    Executive Summary The energy development assumptions identified in the Department of Energy's position paper, 20% Wind Energy by 2030, projected an exploding demand for wind energy-related workforce development. These primary assumptions drove a secondary set of assumptions that early stage wind industry workforce development and training paradigms would need to undergo significant change if the workforce needs were to be met. The current training practice and culture within the wind industry is driven by a relatively small number of experts with deep field experience and knowledge. The current training methodology is dominated by face-to-face, classroom based, instructor present training. Given these assumptions and learning paradigms, the purpose of the National Wind Distance Learning Collaborative was to determine the feasibility of developing online learning strategies and products focused on training wind technicians. The initial project scope centered on (1) identifying resources that would be needed for development of subject matter and course design/delivery strategies for industry-based (non-academic) training, and (2) development of an appropriate Learning Management System (LMS). As the project unfolded, the initial scope was expanded to include development of learning products and the addition of an academic-based training partner. The core partners included two training entities, industry-based Airstreams Renewables and academic-based Lake Area Technical Institute. A third partner, Vision Video Interactive, Inc. provided technology-based learning platforms (hardware and software). The revised scope yielded an expanded set of results beyond the initial expectation. Eight learning modules were developed for the industry-based Electrical Safety course. These modules were subsequently redesigned and repurposed for test application in an academic setting. Software and hardware developments during the project's timeframe enabled redesign providing for student access through the use of tablet devices such as iPads. Early prototype Learning Management Systems (LMS) featuring more student-centric access and interfaces with emerging social media were developed and utilized during the testing applications. The project also produced soft results involving cross learning between and among the partners regarding subject matter expertise, online learning pedagogy, and eLearning technology-based platforms. The partners believe that the most significant, overarching accomplishment of the project was the development and implementation of goals, activities, and outcomes that significantly exceeded those proposed in the initial grant application submitted in 2009. Key specific accomplishments include: (1) development of a set of 8 online learning modules addressing electrical safety as it relates to the work of wind technicians; (3) development of a flexible, open-ended Learning Management System (LMS): (3) creation of a robust body of learning (knowledge, experience, skills, and relationships). Project leaders have concluded that there is substantial resource equity that could be leverage and recommend that it be carried forward to pursue a Next Stage Opportunity relating to development of an online core curriculum for institute and community college energy workforce development programs.

  17. Analytical calculation of the drag force near drag crisis of a falling sphere

    E-Print Network [OSTI]

    Assis, Armando V D B; Branco, N S

    2010-01-01

    We obtain analitically the $v^2$ dependence of the drag force on a falling sphere close to the drag crisis, as well as the drag coefficient at the drag crisis, with excellent agreement with experiment. We take into account the effects of viscosity in creating a turbulent boundary layer and perform the calculations using the Navier-Stokes equation.

  18. Technical Note Neutron Skyshine Calculations with the Integral Line-Beam Method

    E-Print Network [OSTI]

    Shultis, J. Kenneth

    Technical Note Neutron Skyshine Calculations with the Integral Line-Beam Method Ah Auu Gui, J, and the excellent agreement indicates that the integral conical- and line-beam method is an effective alternative been developed. One of these meth- ods, the integral line-beam method, has been applied to both gamma

  19. Faddeev-type calculations of few-body nuclear reactions including Coulomb interaction

    E-Print Network [OSTI]

    A. Deltuva

    2008-10-24

    The method of screening and renormalization is used to include the Coulomb interaction between the charged particles in the description of few-body nuclear reactions. Calculations are done in the framework of Faddeev-type equations in momentum-space. The reliability of the method is demonstrated. The Coulomb effect on observables is discussed.

  20. ColorFull -- a C++ library for calculations in SU(Nc) color space

    E-Print Network [OSTI]

    Malin Sjodahl

    2015-06-29

    ColorFull, a C++ package for treating QCD color structure, is presented. ColorFull, which utilizes the trace basis approach, is intended for interfacing with event generators, but can also be used as a stand-alone package for squaring QCD amplitudes, calculating interferences, and describing the effect of gluon emission and gluon exchange.

  1. Polarizable interaction potential for water from coupled cluster calculations. I. Analysis of dimer potential energy surface

    E-Print Network [OSTI]

    by nonadditive effects which make it impossible to sufficiently accurately represent the energy of water as a sumPolarizable interaction potential for water from coupled cluster calculations. I. Analysis of dimer potential energy surface Robert Bukowski,1 Krzysztof Szalewicz,1,a Gerrit C. Groenenboom,2 and Ad van der

  2. THE EFFECTIVENESS OF SOCIAL MEDIA ACTIVITIES ON TAIWANESE UNDERGRADUATES' EFL GRAMMAR ACHIEVEMENT

    E-Print Network [OSTI]

    Singman, Cooper

    2012-12-31

    The purpose of this study was to compare the effects of social media language learning activities with traditional language learning activities on the development of L2 grammatical competence in two English as a Foreign ...

  3. Status of the MILC calculation of electromagnetic contributions to pseudoscalar masses

    E-Print Network [OSTI]

    S. Basak; A. Bazavov; C. Bernard; C. DeTar; E. Freeland; W. Freeman; J. Foley; Steven Gottlieb; U. M. Heller; J. E. Hetrick; J. Laiho; L. Levkova; M. Oktay; J. Osborn; R. L. Sugar; A. Torok; D. Toussaint; R. S. Van de Water; R. Zhou

    2012-12-12

    We calculate pseudoscalar masses on gauge configurations containing the effects of 2+1 flavors of dynamical asqtad quarks and quenched electromagnetism. The lattice spacings vary from 0.12 to 0.06 fm. The masses are fit with staggered chiral perturbation theory including NLO electromagnetic terms. We attempt to extract the fit parameters for the electromagnetic contributions, while taking into account the finite volume effects, and extrapolate them to the physical limit.

  4. Eddy-current-induced multipole field calculations.

    SciTech Connect (OSTI)

    Sereno, N. S.; Kim, S. H.

    2003-10-15

    Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multipole fields that act on the beam. These fields must be taken into account when doing a lattice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextupole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given on how to generalize this derivation method to include eddy-current-induced multipole fields from higher multipole magnets (quadrupole, sextupole, etc.). Finally, transient effects are considered.

  5. Application of wavelet scaling function expansion continuous-energy resonance calculation method to MOX fuel problem

    SciTech Connect (OSTI)

    Yang, W.; Wu, H.; Cao, L.

    2012-07-01

    More and more MOX fuels are used in all over the world in the past several decades. Compared with UO{sub 2} fuel, it contains some new features. For example, the neutron spectrum is harder and more resonance interference effects within the resonance energy range are introduced because of more resonant nuclides contained in the MOX fuel. In this paper, the wavelets scaling function expansion method is applied to study the resonance behavior of plutonium isotopes within MOX fuel. Wavelets scaling function expansion continuous-energy self-shielding method is developed recently. It has been validated and verified by comparison to Monte Carlo calculations. In this method, the continuous-energy cross-sections are utilized within resonance energy, which means that it's capable to solve problems with serious resonance interference effects without iteration calculations. Therefore, this method adapts to treat the MOX fuel resonance calculation problem natively. Furthermore, plutonium isotopes have fierce oscillations of total cross-section within thermal energy range, especially for {sup 240}Pu and {sup 242}Pu. To take thermal resonance effect of plutonium isotopes into consideration the wavelet scaling function expansion continuous-energy resonance calculation code WAVERESON is enhanced by applying the free gas scattering kernel to obtain the continuous-energy scattering source within thermal energy range (2.1 eV to 4.0 eV) contrasting against the resonance energy range in which the elastic scattering kernel is utilized. Finally, all of the calculation results of WAVERESON are compared with MCNP calculation. (authors)

  6. On Learning Algorithms for Nash Equilibria

    E-Print Network [OSTI]

    Daskalakis, Constantinos

    Can learning algorithms find a Nash equilibrium? This is a natural question for several reasons. Learning algorithms resemble the behavior of players in many naturally arising games, and thus results on the convergence or ...

  7. 6.867 Machine Learning, Fall 2002

    E-Print Network [OSTI]

    Jaakkola, Tommi S. (Tommi Sakari)

    Principles, techniques, and algorithms in machine learning from the point of view of statistical inference; representation, generalization, and model selection; and methods such as linear/additive models, active learning, ...

  8. General conditions for predictivity in learning theory

    E-Print Network [OSTI]

    Poggio, Tomaso

    that ensure generalization for the natural class of empirical risk minimization (ERM) learning algorithms- ditions on the learning map rather than on the hypothesis space, subsumes the classical theory for ERM

  9. Early word learning through communicative inference

    E-Print Network [OSTI]

    Frank, Michael C., Ph. D. Massachusetts Institute of Technology

    2010-01-01

    How do children learn their first words? Do they do it by gradually accumulating information about the co-occurrence of words and their referents over time, or are words learned via quick social inferences linking what ...

  10. Total learning : education beyond the classroom

    E-Print Network [OSTI]

    Im, Soo O., 1972-

    2002-01-01

    What is a quality learning space? This thesis is a study of a prototype for secondary school to provide a stimulating learning environment and a nurturing growing space in an urban site through exploration of different ...

  11. A path analysis of relationships among job stress, job satisfaction, motivation to transfer, and transfer of learning: perceptions of occupational safety and health administration outreach trainers 

    E-Print Network [OSTI]

    Nair, Prakash Krishnan

    2009-05-15

    Many researchers have examined the effect of various work-related factors on transfer of learning. However, there has been little or no focus on the effect of key workplace factors such as job stress and job satisfaction on transfer of learning...

  12. WRITING EXPECTED LEARNING OUTCOMES FOR AWRITING EXPECTED LEARNING OUTCOMES FOR A COURSECOURSE

    E-Print Network [OSTI]

    Rock, Chris

    for a course, it is a good idea to think broadly. Course-level expected learning outcomes do not need to focus will know). Be sure to include learning outcomes that describe what the student can do and who they are2424 WRITING EXPECTED LEARNING OUTCOMES FOR AWRITING EXPECTED LEARNING OUTCOMES FOR A COURSECOURSE

  13. Learning physics in context: a study of student learning about electricity and magnetism

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    re-centres the discussion of student learning in physics to focus on context. In order to do soLearning physics in context: a study of student learning about electricity and magnetism This paper and inextricable role of context in student learning. This work sits within a broader effort to create and analyze

  14. Developing Program Learning Outcomes Page 1 DevelopingProgramLearningOutcomes

    E-Print Network [OSTI]

    Dyer, Bill

    ..." you help ensure that the focus is on student learning and abilities. These are not student learning, 2011, R. W. Larsen Student learning outcomes (SLOs) can be written for a course, a program, or an institution. This document focuses specifically on learning outcomes for programs (e.g., degree programs

  15. Engaging Faculty With Rethinking Learning and Teaching With Technology

    E-Print Network [OSTI]

    Szmolyan, Peter

    for student learning'. (within the lecture as well as out of class ) Shift the focus from `how do I teach this student learning - educational implications ­ `learning time' / `learning space' During this presentation Online or face to face ? #12;"Learning is not a spectator sport. Students do not learn much just

  16. Learning-Theoretic Methods in Vector Quantization

    E-Print Network [OSTI]

    Linder, Tamás

    Learning L. Gy¨orfi, editor, CISM Lecture Notes, Wien, New York: Springer 2001. Tam´as Linder Department

  17. Webinar: National Hydrogen Learning Demonstration Status

    Broader source: Energy.gov [DOE]

    Video recording and text version of the webinar, "National Hydrogen Learning Demonstration Status," originally presented on February 6, 2012.

  18. EM Recovery Act Lessons Learned (Sites)

    Broader source: Energy.gov [DOE]

    Presentation slides from EM ARRA Best Practices and Lessons Learned WorkshopWaste Management SymposiumPhoenix, AZMarch 1, 2012.

  19. A Cosmology Calculator for the World Wide Web

    E-Print Network [OSTI]

    Edward L. Wright

    2006-10-10

    A cosmology calculator that computes times and distances as a function of redshift for user-defined cosmological parameters is available on the World Wide Web. This note gives the formulae used by the cosmology calculator and discusses some of its implementation. A version of the calculator that allows one to specify the equation of state parameter w and w' and neutrino masses, and a version for converting the light travel times usually given in the popular press into redshifts are also available.

  20. Binding Energies in Benzene Dimers: Nonlocal Density Functional Calculations

    E-Print Network [OSTI]

    Aaron Puzder; Maxime Dion; David C. Langreth

    2005-09-15

    The interaction energy and minimum energy structure for different geometries of the benzene dimer has been calculated using the recently developed nonlocal correlation energy functional for calculating dispersion interactions. The comparison of this straightforward and relatively quick density functional based method with recent calculations can elucidate how the former, quicker method might be exploited in larger more complicated biological, organic, aromatic, and even infinite systems such as molecules physisorbed on surfaces, and van der Waals crystals.

  1. A new endwall model for axial compressor throughflow calculations

    SciTech Connect (OSTI)

    Dunham, J.

    1995-10-01

    It is well recognized that the endwall regions of a compressor--in which the annulus wall flow interacts with the mainstream flow--have a major influence on its efficiency and surge margin. Despite many attempts over the years to predict the very complex flow patterns in the endwall regions, current compressor design methods still rely largely on empirical estimates of the aerodynamic losses and flow angle deviations in these regions. This paper describes a new phenomenological model of the key endwall flow phenomena treated in a circumferentially averaged way. It starts from Hirsch and de Ruyck`s annulus wall boundary layer approach, but makes some important changes. The secondary vorticities arising from passage secondary flows and from tip clearance flows are calculated. Then the radial interchanges of momentum, energy, and entropy arising from both diffusion and convection are estimated. The model is incorporated into a streamline curvature program. The empirical blade force defect terms in the boundary layers are selected from cascade data. The effectiveness of the method is illustrated by comparing the predictions with experimental results on both low-speed and high-speed multistage compressors. It is found that the radial variation of flow parameters is quite well predicted, and so is the overall performance, except when significant endwall stall occurs.

  2. High precision electrostatic potential calculations for cylindrically symmetric lenses

    SciTech Connect (OSTI)

    Edwards, David Jr. [238 Marylyn Lane, Newark, Vermont 05871 (United States)

    2007-02-15

    A method is developed for a potential calculation within cylindrically symmetric electrostatic lenses using mesh relaxation techniques, and it is capable of considerably higher accuracies than currently available. The method involves (i) creating very high order algorithms (orders of 6, 8, and 10) for determining the potentials at points in the net using surrounding point values, (ii) eliminating the effect of the large errors caused by singular points, and (iii) reducing gradients in the high gradient regions of the geometry, thereby allowing the algorithms used in these regions to achieve greater precisions--(ii) and (iii) achieved by the use of telescopic multiregions. In addition, an algorithm for points one unit from a metal surface is developed, allowing general mesh point algorithms to be used in these situations, thereby taking advantage of the enhanced precision of the latter. A maximum error function dependent on a sixth order gradient of the potential is defined. With this the single point algorithmic errors are able to be viewed over the entire net. Finally, it is demonstrated that by utilizing the above concepts and procedures, the potential of a point in a reasonably high gradient region of a test geometry can realize a precision of less than 10{sup -10}.

  3. Multigroup Radiation Transport in Supernova Light Curve Calculations...

    Office of Scientific and Technical Information (OSTI)

    Multigroup Radiation Transport in Supernova Light Curve Calculations Even, Wesley P. Los Alamos National Laboratory; Frey, Lucille H. Los Alamos National Laboratory; Fryer,...

  4. Multigroup Radiation Transport in Supernova Light Curve Calculations...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Multigroup Radiation Transport in Supernova Light Curve Calculations Citation Details In-Document Search Title: Multigroup Radiation Transport in Supernova Light...

  5. Energy savings estimates and cost benefit calculations for high...

    Office of Scientific and Technical Information (OSTI)

    Energy savings estimates and cost benefit calculations for high performance relocatable classrooms Citation Details In-Document Search Title: Energy savings estimates and cost...

  6. Integrated System Transmission and Ancillary Services Rate Calculation

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

    Western Area Power Administration Basin Electric Power Cooperative Heartland Consumers Power District 1 Integrated System Transmission and Ancillary Services Rate Calculation...

  7. Integrated System Transmission and Ancillary Services Rate Calculation

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

    System Transmission and Ancillary Services 2013 Rate True-up Calculation Western Area Power Administration Basin Electric Power Cooperative Heartland Consumers Power District 1...

  8. XOP : a graphical user interface for spectral calculations and...

    Office of Scientific and Technical Information (OSTI)

    XOP : a graphical user interface for spectral calculations and x-ray optics utilities. Citation Details In-Document Search Title: XOP : a graphical user interface for spectral...

  9. Qualified Software for Calculating Commercial Building Tax Deductions

    Office of Energy Efficiency and Renewable Energy (EERE)

    On this page you'll find a list of qualified computer software for calculating commercial building energy and power cost savings that meet federal tax incentive requirements.

  10. Quantum Monte Carlo Calculations of Light Nuclei Using Chiral...

    Office of Scientific and Technical Information (OSTI)

    Details In-Document Search This content will become publicly available on November 4, 2015 Title: Quantum Monte Carlo Calculations of Light Nuclei Using Chiral Potentials...

  11. A Method for Calculating Reference Evapotranspiration on Daily Time Scales

    E-Print Network [OSTI]

    Farmer, William

    Measures of reference evapotranspiration are essential for applications of agricultural management and water resources engineering. Using numerous esoteric variables, one can calculate daily reference evapotranspiration ...

  12. Remarks on calculation of positron flux from galactic dark matter...

    Office of Scientific and Technical Information (OSTI)

    involves solving transport equations, which account for interaction of positrons with matter and galactic magnetic fields. Existing calculations solve the equations inside the...

  13. Magnetic Field Line Tracing Calculations for Conceptual PFC Design...

    Office of Scientific and Technical Information (OSTI)

    Conference: Magnetic Field Line Tracing Calculations for Conceptual PFC Design in the National Compact Stellarator Experiment Citation Details In-Document Search Title: Magnetic...

  14. NREL: Energy Analysis - Levelized Cost of Energy Calculator

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

    distributed generation data used within this calculator. If you are seeking utility-scale technology cost and performance estimates, please visit the Transparent Cost Database...

  15. NSRD-2015-TD01, Technical Report for Calculations of Atmospheric...

    Energy Savers [EERE]

    material. An evaluation of methods for calculation of the dispersion of potential chemical releases for the purpose of estimating the chemical exposure at the co-located worker...

  16. Henry and Fred Learn about Lead

    E-Print Network [OSTI]

    Holsinger, Kent

    Henry and Fred Learn about Lead Joan Bothell Activity book #12;Henry and Fred Learn about Lead the children's storybook Henry and Fred Learn about Lead/Enrique y Federico aprenden sobre el plomo (2003 of this activity book. The Henry and Fred storybook is about keeping children safe from lead poisoning, a serious

  17. Learning Plan Section I: Student Data

    E-Print Network [OSTI]

    Su, Xiao

    and type of criminal activity or hazardous materials at or near the location of the learning activity, (e at the Learning Site, (g) the criminal, mental and social backgrounds of the individuals I will be working without permission the Learning Site's proprietary information, records or confidential information

  18. PUNCTUATED ANYTIME LEARNING FOR EVOLUTIONARY ROBOTICS

    E-Print Network [OSTI]

    Parker, Gary B.

    PUNCTUATED ANYTIME LEARNING FOR EVOLUTIONARY ROBOTICS GARY B. PARKER and KAREN J. LAROCHELLE­line on a simple model while periodic checks on the actual robot help to improve the learning system's output. We discuss this concept by learning gaits for a hexapod robot, which is modeled after the ServoBot. We use

  19. PUNCTUATED ANYTIME LEARNING FOR EVOLUTIONARY ROBOTICS

    E-Print Network [OSTI]

    Parker, Gary B.

    PUNCTUATED ANYTIME LEARNING FOR EVOLUTIONARY ROBOTICS GARY B. PARKER and KAREN J. LAROCHELLE-line on a simple model while periodic checks on the actual robot help to improve the learning system's output. We discuss this concept by learning gaits for a hexapod robot, which is modeled after the ServoBot. We use

  20. Learning Artistic Lighting Template from Portrait Photographs

    E-Print Network [OSTI]

    Zhu, Song Chun

    Learning Artistic Lighting Template from Portrait Photographs Xin Jin1 , Mingtian Zhao2,3 , Xiaowu artistic portrait lighting template from a dataset of artistic and daily portrait photographs. The learned aesthetic quality assess- ment of these photographs in lighting usage. For learning the template, we adopt

  1. Service-Learning & Student Civic Engagement

    E-Print Network [OSTI]

    Service-Learning & Student Civic Engagement: Journeys toward Discovery, Contribution & Civic is service-learning? Intentional student engagement that combines community service with academic instruction and/or co-curricular learning that is focused on critical, reflective thinking and civic

  2. Spring 2012 Mobile Learning Scholars Assessment Report

    E-Print Network [OSTI]

    Barrash, Warren

    is an immersive semester of exploration focused on leveraging mobile learning strategies to achieve course goals and on student learning. During the Spring 2012 semester, two cohorts of faculty were supported. Each faculty of the experience was assessed in the following ways: a) students enrolled in these mLearning courses were surveyed

  3. Neural Plasticity of Development and Learning

    E-Print Network [OSTI]

    Gabrieli, John

    Neural Plasticity of Development and Learning Galvan, 2010 Presented by Kristen Morin and Sunil Patel I. Defining Development and Learning II. Neural Plasticity III. Progressive and Regressive Changes with Learning IV. Plasticity of Developmental Timing V. Neural Mechanism- Same or Different? VI. Methodological

  4. ARTIFICIAL INTELLIGENCE Learning to see and act

    E-Print Network [OSTI]

    Meeden, Lisa A.

    ARTIFICIAL INTELLIGENCE Learning to see and act An artificial-intelligence system uses machine to process large amounts of data have led to progress in many areas of science, not least artificial intelligence (AI). With advances in machine learning has come the development of machines that can learn

  5. Environmental Restoration Disposal Facility Lessons Learned

    SciTech Connect (OSTI)

    Caulfield, R.

    2012-07-12

    The purpose of lessons learned is to identify insight gained during a project – successes or failures – that can be applied on future projects. Lessons learned can contribute to the overall success of a project by building on approaches that have worked well and avoiding previous mistakes. Below are examples of lessons learned during ERDF’s ARRA-funded expansion project.

  6. LANGUAGE LEARNING AND NONLINEAR DYNAMICAL SYSTEMS

    E-Print Network [OSTI]

    Andrews, Mark W.

    LANGUAGE LEARNING AND NONLINEAR DYNAMICAL SYSTEMS A Dissertation Presented to the Faculty LEARNING AND NONLINEAR DYNAMICAL SYSTEMS Mark William Andrews, Ph.D. Cornell University 2003 The thesis be provided by an better appreciation of the capacities of nonlinear dynamical systems to learn, rep- resent

  7. Dark matter effective field theory scattering in direct detection experiments

    E-Print Network [OSTI]

    K. Schneck; B. Cabrera; D. G. Cerdeno; V. Mandic; H. E. Rogers; R. Agnese; A. J. Anderson; M. Asai; D. Balakishiyeva; D. Barker; R. Basu Thakur; D. A. Bauer; J. Billard; A. Borgland; D. Brandt; P. L. Brink; R. Bunker; D. O. Caldwell; R. Calkins; H. Chagani; Y. Chen; J. Cooley; B. Cornell; C. H. Crewdson; P. Cushman; M. Daal; P. C. F. Di Stefano; T. Doughty; L. Esteban; S. Fallows; E. Figueroa-Feliciano; G. L. Godfrey; S. R. Golwala; J. Hall; H. R. Harris; T. Hofer; D. Holmgren; L. Hsu; M. E. Huber; D. M. Jardin; A. Jastram; O. Kamaev; B. Kara; M. H. Kelsey; A. Kennedy; A. Leder; B. Loer; E. Lopez Asamar; P. Lukens; R. Mahapatra; K. A. McCarthy; N. Mirabolfathi; R. A. Moffatt; J. D. Morales Mendoza; S. M. Oser; K. Page; W. A. Page; R. Partridge; M. Pepin; A. Phipps; K. Prasad; M. Pyle; H. Qiu; W. Rau; P. Redl; A. Reisetter; Y. Ricci; A. Roberts; T. Saab; B. Sadoulet; J. Sander; R. W. Schnee; S. Scorza; B. Serfass; B. Shank; D. Speller; D. Toback; S. Upadhyayula; A. N. Villano; B. Welliver; J. S. Wilson; D. H. Wright; X. Yang; S. Yellin; J. J. Yen; B. A. Young; J. Zhang

    2015-06-22

    We examine the consequences of the effective field theory (EFT) of dark matter-nucleon scattering for current and proposed direct detection experiments. Exclusion limits on EFT coupling constants computed using the optimum interval method are presented for SuperCDMS Soudan, CDMS II, and LUX, and the necessity of combining results from multiple experiments in order to determine dark matter parameters is discussed. We demonstrate that spectral differences between the standard dark matter model and a general EFT interaction can produce a bias when calculating exclusion limits and when developing signal models for likelihood and machine learning techniques. We also discuss the implications of the EFT for the next-generation (G2) direct detection experiments and point out regions of complementarity in the EFT parameter space.

  8. Euler - Heisenberg effective action and magnetoelectric effect in multilayer graphene

    E-Print Network [OSTI]

    M. I. Katsnelson; G. E. Volovik; M. A. Zubkov

    2013-01-24

    The low energy effective field model for the multilayer graphene (at ABC stacking) is considered. We calculate the effective action in the presence of constant external magnetic field $B$ (normal to the graphene sheet). We also calculate the first two corrections to this effective action caused by the in-plane electric field $E$ at $E/B \\ll 1$ and discuss the magnetoelectric effect. In addition, we calculate the imaginary part of the effective action in the presence of constant electric field $E$ and the lowest order correction to it due to the magnetic field ($B/E \\ll 1$).

  9. Feudal Reinforcement Learning Peter Dayan

    E-Print Network [OSTI]

    Dayan, Peter

    Feudal Reinforcement Learning Peter Dayan CNL The Salk Institute PO Box 85800 San Diego CA 92186-grid division of the space in which the agent moves, and section 4 draws some conclusions. 2 FEUDAL CONTROL We sought to build a system that mirrored the hierarchical aspects of a feudal fief- dom, since this is one

  10. Reputational Learning and Network Dynamics

    E-Print Network [OSTI]

    Zhang, Simpson

    2015-01-01

    In many real world networks agents are initially unsure of each other's qualities and learn about each other over time via repeated interactions. This paper is the first to provide a methodology for studying the formation of such networks, taking into account that agents differ from each other, that they begin with incomplete information, and that they must learn through observations which connections/links to form and which to break. The network dynamics in our model vary drastically from the dynamics emerging in models of complete information. With incomplete information and learning, agents who provide high benefits will develop high reputations and remain in the network, while agents who provide low benefits will drop in reputation and become ostracized. We show, among many other things, that the information to which agents have access and the speed at which they learn and act can have tremendous impact on the resulting network dynamics. Using our model, we can also compute the \\textit{ex ante} social wel...

  11. Climate risk Learning from practice

    E-Print Network [OSTI]

    Smerdon, Jason E.

    Climate risk management in Africa: Learning from practice ClimateandSocietyNo.1 #12;The Climate and Society series is devoted to providing authoritative and accessible information on climate risk management of the International Research Institute for Climate and Society (IRI). IRI aims to contribute to sustainable living

  12. Emergency Doses (ED) - Revision 3: A calculator code for environmental dose computations

    SciTech Connect (OSTI)

    Rittmann, P.D.

    1990-12-01

    The calculator program ED (Emergency Doses) was developed from several HP-41CV calculator programs documented in the report Seven Health Physics Calculator Programs for the HP-41CV, RHO-HS-ST-5P (Rittman 1984). The program was developed to enable estimates of offsite impacts more rapidly and reliably than was possible with the software available for emergency response at that time. The ED - Revision 3, documented in this report, revises the inhalation dose model to match that of ICRP 30, and adds the simple estimates for air concentration downwind from a chemical release. In addition, the method for calculating the Pasquill dispersion parameters was revised to match the GENII code within the limitations of a hand-held calculator (e.g., plume rise and building wake effects are not included). The summary report generator for printed output, which had been present in the code from the original version, was eliminated in Revision 3 to make room for the dispersion model, the chemical release portion, and the methods of looping back to an input menu until there is no further no change. This program runs on the Hewlett-Packard programmable calculators known as the HP-41CV and the HP-41CX. The documentation for ED - Revision 3 includes a guide for users, sample problems, detailed verification tests and results, model descriptions, code description (with program listing), and independent peer review. This software is intended to be used by individuals with some training in the use of air transport models. There are some user inputs that require intelligent application of the model to the actual conditions of the accident. The results calculated using ED - Revision 3 are only correct to the extent allowed by the mathematical models. 9 refs., 36 tabs.

  13. Accelerated learning approaches for maintenance training

    SciTech Connect (OSTI)

    Erickson, E.J.

    1991-01-01

    As a training tool, Accelerated Learning techniques have been in use since 1956. Trainers from a variety of applications and disciplines have found success in using Accelerated Learning approaches, such as training aids, positive affirmations, memory aids, room arrangement, color patterns, and music. Some have thought that maintenance training and Accelerated Learning have nothing in common. Recent training applications by industry and education of Accelerated Learning are proving very successful by several standards. This paper cites available resource examples and challenges maintenance trainers to adopt new ideas and concepts to accelerate learning in all training setting. 7 refs.

  14. Independent review of SCDAP/RELAP5 natural circulation calculations

    SciTech Connect (OSTI)

    Martinez, G.M.; Gross, R.J.; Martinez, M.J.; Rightley, G.S.

    1994-01-01

    A review and assessment of the uncertainties in the calculated response of reactor coolant system natural circulation using the SCDAP/RELAP5 computer code were completed. The SCDAP/RELAP5 calculation modeled a station blackout transient in the Surry nuclear power plant and concluded that primary system depressurization from natural circulation induced primary system failure is more likely than previously thought.

  15. Computing Partial Eigenvalue Sum in Electronic Structure Calculations

    E-Print Network [OSTI]

    Bai, Zhaojun

    and CPU time. In the application of electronic structure calculations in molecular dynamics, the newComputing Partial Eigenvalue Sum in Electronic Structure Calculations Z. Bai M. Faheyy G. Golubz M where computation of the total energy of an electronic structure requires the evaluation of partial

  16. Dynamic Algorithm Selection in Parallel GAMESS Calculations Nurzhan Ustemirov

    E-Print Network [OSTI]

    Sosonkina, Masha

    and Molecular Electronic Structure System (GAMESS) used for ab initio molecular quantum chemistry calculationsDynamic Algorithm Selection in Parallel GAMESS Calculations Nurzhan Ustemirov Masha Sosonkina, network, or disk I/O. For large-scale scientific applications, dynamic adjustments to a computationally

  17. Realistic shell-model calculations: current status and open problems

    E-Print Network [OSTI]

    A. Covello; A. Gargano

    2010-03-29

    The main steps involved in realistic shell-model calculations employing two-body low-momentum interactions are briefly reviewed. The practical value of this approach is exemplified by the results of recent calculations and some remaining open questions and directions for future research are discussed.

  18. Fission life-time calculation using a complex absorbing potential

    E-Print Network [OSTI]

    Guillaume Scamps; Kouichi Hagino

    2015-12-28

    A comparison between the semi-classical approximation and the full quantum calculation with a complex absorbing potential is made with a model of the fission of 258Fm. The potential barrier is obtained with the constrained Skyrme HF+BCS theory. The life-time obtained by the two calculations agree with each other the difference being only by 25%.

  19. Processus communicants Communication synchrone CSP/CCS/-calcul

    E-Print Network [OSTI]

    Grigoras, .Romulus

    Processus communicants Communication synchrone CSP/CCS/-calcul Rendez-vous étendu Ada Huitième partie Processus communicants CSP/Ada Systèmes concurrents 2 / 44 #12;Processus communicants Communication synchrone CSP/CCS/-calcul Rendez-vous étendu Ada Principes Synchronisation Désignation

  20. Promoting young adolescents򠨹pothesis-development performance in a computer-supported and problem-based learning environment 

    E-Print Network [OSTI]

    Kim, Hye Jeong

    2009-05-15

    In the study, young adolescents’ hypothesis development in a computer-supported and problem-based learning environment was examined in terms of two empirical studies. The first study examined the effect of metacognitive scaffolds to strengthening...

  1. A self-consistent renormalized Jellium approach for calculating structural and thermodynamic properties of charge stabilized colloidal suspensions

    E-Print Network [OSTI]

    Thiago E. Colla; Yan Levin; E. Trizac

    2009-05-11

    An approach is proposed which allows to self-consistently calculate the structural and thermodynamic properties of highly charged aqueous colloidal suspensions. The method is based on the renormalized Jellium model with the background charge distribution related to the colloid-colloid correlation function. The theory is used to calculate the correlation functions and the effective colloidal charges for suspension containing additional monovalent electrolyte. The predictions of the theory are in excellent agreement with the Monte Carlo simulations.

  2. English language learners' reading self-efficacy and achievement using 1:1 mobile learning devices

    E-Print Network [OSTI]

    Walters, Jennifer L.

    2012-01-01

    when mobile learning devices and mobile learning tasks areinteraction with mobile devices and services. SpringerTechnology Learning Devices Mobile learning devices afford

  3. A Framework for Lattice QCD Calculations on GPUs

    E-Print Network [OSTI]

    F. T. Winter; M. A. Clark; R. G. Edwards; B. Joó

    2014-08-25

    Computing platforms equipped with accelerators like GPUs have proven to provide great computational power. However, exploiting such platforms for existing scientific applications is not a trivial task. Current GPU programming frameworks such as CUDA C/C++ require low-level programming from the developer in order to achieve high performance code. As a result porting of applications to GPUs is typically limited to time-dominant algorithms and routines, leaving the remainder not accelerated which can open a serious Amdahl's law issue. The lattice QCD application Chroma allows to explore a different porting strategy. The layered structure of the software architecture logically separates the data-parallel from the application layer. The QCD Data-Parallel software layer provides data types and expressions with stencil-like operations suitable for lattice field theory and Chroma implements algorithms in terms of this high-level interface. Thus by porting the low-level layer one can effectively move the whole application in one swing to a different platform. The QDP-JIT/PTX library, the reimplementation of the low-level layer, provides a framework for lattice QCD calculations for the CUDA architecture. The complete software interface is supported and thus applications can be run unaltered on GPU-based parallel computers. This reimplementation was possible due to the availability of a JIT compiler (part of the NVIDIA Linux kernel driver) which translates an assembly-like language (PTX) to GPU code. The expression template technique is used to build PTX code generators and a software cache manages the GPU memory. This reimplementation allows us to deploy an efficient implementation of the full gauge-generation program with dynamical fermions on large-scale GPU-based machines such as Titan and Blue Waters which accelerates the algorithm by more than an order of magnitude.

  4. Holographic Calculation for Large Interval Rényi Entropy at High Temperature

    E-Print Network [OSTI]

    Bin Chen; Jie-qiang Wu

    2015-06-10

    In this paper, we study the holographic R\\'enyi entropy of a large interval on a circle at high temperature for the two-dimensional CFT dual to pure AdS$_3$ gravity. In the field theory, the R\\'enyi entropy is encoded in the CFT partition function on $n$-sheeted torus connected with each other by a large branch cut. As proposed in 1412.0763, the effective way to read the entropy in the large interval limit is to insert a complete set of state bases of the twist sector at the branch cut. Then the calculation transforms into an expansion of four-point functions in the twist sector with respect to $e^{-\\frac{2\\pi TR}{n}}$. By using the operator product expansion of the twist operators at the branch points, we read the first few terms of the R\\'enyi entropy, including the leading and next-leading contributions in the large central charge limit. Moreover, we show that the leading contribution is actually captured by the twist vacuum module. In this case by the Ward identity the four-point functions can be derived from the correlation function of four twist operators, which is related to double interval entanglement entropy. Holographically, we apply the recipe in 1303.7221 and 1306.4682 to compute the classical R\\'enyi entropy and its 1-loop quantum correction, after imposing a new set of monodromy conditions. The holographic classical result matches exactly with the leading contribution in the field theory up to $e^{-4\\pi TR}$ and $l^6$, while the holographical 1-loop contribution is in exact agreement with next-leading results in field theory up to $e^{-\\frac{6\\pi TR}{n}}$ and $l^4$ as well.

  5. A Framework for Lattice QCD Calculations on GPUs

    SciTech Connect (OSTI)

    Winter, Frank; Clark, M.A.; Edwards, Robert G.; Joo, Balint

    2014-08-01

    Computing platforms equipped with accelerators like GPUs have proven to provide great computational power. However, exploiting such platforms for existing scientific applications is not a trivial task. Current GPU programming frameworks such as CUDA C/C++ require low-level programming from the developer in order to achieve high performance code. As a result porting of applications to GPUs is typically limited to time-dominant algorithms and routines, leaving the remainder not accelerated which can open a serious Amdahl's law issue. The lattice QCD application Chroma allows to explore a different porting strategy. The layered structure of the software architecture logically separates the data-parallel from the application layer. The QCD Data-Parallel software layer provides data types and expressions with stencil-like operations suitable for lattice field theory and Chroma implements algorithms in terms of this high-level interface. Thus by porting the low-level layer one can effectively move the whole application in one swing to a different platform. The QDP-JIT/PTX library, the reimplementation of the low-level layer, provides a framework for lattice QCD calculations for the CUDA architecture. The complete software interface is supported and thus applications can be run unaltered on GPU-based parallel computers. This reimplementation was possible due to the availability of a JIT compiler (part of the NVIDIA Linux kernel driver) which translates an assembly-like language (PTX) to GPU code. The expression template technique is used to build PTX code generators and a software cache manages the GPU memory. This reimplementation allows us to deploy an efficient implementation of the full gauge-generation program with dynamical fermions on large-scale GPU-based machines such as Titan and Blue Waters which accelerates the algorithm by more than an order of magnitude.

  6. On calculating the equilibrium structure of molecular crystals.

    SciTech Connect (OSTI)

    Mattsson, Ann Elisabet; Wixom, Ryan R.; Mattsson, Thomas Kjell Rene

    2010-03-01

    The difficulty of calculating the ambient properties of molecular crystals, such as the explosive PETN, has long hampered much needed computational investigations of these materials. One reason for the shortcomings is that the exchange-correlation functionals available for Density Functional Theory (DFT) based calculations do not correctly describe the weak intermolecular van der Waals' forces present in molecular crystals. However, this weak interaction also poses other challenges for the computational schemes used. We will discuss these issues in the context of calculations of lattice constants and structure of PETN with a number of different functionals, and also discuss if these limitations can be circumvented for studies at non-ambient conditions.

  7. Microscopic Calculation of Heavy-Ion Potentials Based on TDHF

    E-Print Network [OSTI]

    A. S. Umar; V. E. Oberacker; J. A. Maruhn; P. -G. Reinhard\\

    2011-06-17

    We discuss the implementation and results of a recently developed microscopic method for calculating ion-ion interaction potentials and fusion cross-sections. The method uses the TDHF evolution to obtain the instantaneous many-body collective state using a density constraint. The ion-ion potential as well as the coordinate dependent mass are calculated from these states. The method fully accounts for the dynamical processes present in the TDHF time-evolution and provides a parameter-free way of calculating fusion cross-sections.

  8. Atmospheric radiative transfer parametrization for solar energy yield calculations on buildings

    E-Print Network [OSTI]

    Wagner, Jochen E

    2015-01-01

    In this paper the practical approach to evaluate the incoming solar radiation on buildings based on atmospheric composition and cloud cover is presented. The effects of absorption and scattering due to atmospheric composition is taken into account to calculate, using radiative transfer models, the net incoming solar radiation at surface level. A specific validation of the Alpine Region in Europe is presented with a special focus on the region of South Tyrol.

  9. A Mathematica Package for Calculation of One-Loop Penguins in FCNC Processes

    E-Print Network [OSTI]

    A. V. Bednyakov; S. H. Tanyildizi

    2014-09-04

    In this work, we present a Mathematica package Peng4BSM@LO which calculates the contributions to the Wilson Coefficients of certain effective operators originating from the one-loop penguin Feynman diagrams. Both vector and scalar external legs are considered. The key feature of our package is the ability to find the corresponding expressions in almost any New Physics model which extends the SM and has no flavour changing neutral current (FCNC) transitions at the tree level.

  10. Multi-Center Electronic Structure Calculations for Plasma Equation of State

    SciTech Connect (OSTI)

    Wilson, B G; Johnson, D D; Alam, A

    2010-12-14

    We report on an approach for computing electronic structure utilizing solid-state multi-center scattering techniques, but generalized to finite temperatures to model plasmas. This approach has the advantage of handling mixtures at a fundamental level without the imposition of ad hoc continuum lowering models, and incorporates bonding and charge exchange, as well as multi-center effects in the calculation of the continuum density of states.

  11. MELCOR calculations for a low-pressure short-term station blackout in a BWR-6

    SciTech Connect (OSTI)

    Carbajo, J.J. [Martin Marietta Energy Systems, Oak Ridge, TN (United States)

    1995-12-31

    A postulated, low-pressure, short term station blackout severe accident has been analyzed using the MELCOR code for the Grand Gulf nuclear power plant. Different versions have been used with three different models of the plant. This paper presents results of the effects of different plant models and versions of MELCOR on the calculated results and to present the best-estimating timing of events for this transient.

  12. Markers of serotonergic function in the orbitofrontal cortex and dorsal raphé nucleus predict individual variation in spatial-discrimination serial reversal learning

    E-Print Network [OSTI]

    Barlow, Rebecca L.; Alsiö, Johan; Jupp, Bianca; Rabinovich, Rebecca; Shrestha, Saurav; Roberts, Angela C.; Robbins, Trevor W.; Dalley, Jeffrey W.

    2015-01-08

    ) and rodents (Boulougouris et al, 2007; Chudasama and Robbins, 2003; 67 McAlonan and Brown, 2003). Effective reversal learning requires a new S-R contingency to 68 be learnt whilst ignoring competing interference from a previously learnt response. A failure... selectively activated during reversal learning (Hampshire and Owen, 2006) and damage to 76 this region disrupts reversal learning in experimental animals (Bissonette et al, 2008; 77 Boulougouris et al, 2007; Burke et al, 2009; Dias et al, 1996; Fellows et al...

  13. Twenty years of energy policy: What should we have learned?

    SciTech Connect (OSTI)

    Greene, D.L. [Oak Ridge National Lab., TN (United States). Center for Transportation Analysis

    1994-07-01

    This report examines the past twenty years of energy market events and energy policies to determine what may be useful for the future. The author focuses on two important lessons that should have been learned but which the author feels have been seriously misunderstood. The first is that oil price shocks were a very big and very real problem for oil importing countries, a problem the has not gone away. The second is that automobile fuel economy regulation has worked and worked effectively to reduce oil consumption and the externalities associated with it, and can still work effectively in the future.

  14. Neural-Symbolic Learning Systems

    E-Print Network [OSTI]

    van der Torre, Leon

    and semi-linear neurons such that N computesTp r1 : A (B C D) r2 : A (E F) r3 : B #12;Logic Programs #12;Why Neurons and Symbols · To study the statistical nature of learning and the logical nature Programming A B !A !B W WW !1 h1 !2 h2 !3 h3 B FEDC WWW -WW Interpretations For each propositional general

  15. Energy savings estimates and cost benefit calculations for high performance relocatable classrooms

    E-Print Network [OSTI]

    Rainer, Leo I.; Hoeschele, Marc A.; Apte, Michael G.; Shendell, Derek G.; Fisk, William J.

    2003-01-01

    Energy Savings Estimates and Cost Benefit Calculations forEnergy Savings Estimates and Cost Benefit Calculations forEnergy Savings Estimates and Cost Benefit Calculations for

  16. Exploring the Reactivity of Carbene Cycloadditions with Electronic Structure Theory Calculations and Molecular Dynamics Simulations

    E-Print Network [OSTI]

    Sader, Charles Avery

    2015-01-01

    Electronic Structure Theory Calculations and Molecular DynamicsElectronic Structure Theory Calculations and Molecular Dynamicsdynamics simulation requires identification of an electronic structure calculation

  17. Real-time POD-CFD Wind-Load Calculator for PV Systems

    SciTech Connect (OSTI)

    Huayamave, Victor; Divo, Eduardo; Ceballos, Andres; Barriento, Carolina; Stephen, Barkaszi; Hubert, Seigneur

    2014-03-21

    The primary objective of this project is to create an accurate web-based real-time wind-load calculator. This is of paramount importance for (1) the rapid and accurate assessments of the uplift and downforce loads on a PV mounting system, (2) identifying viable solutions from available mounting systems, and therefore helping reduce the cost of mounting hardware and installation. Wind loading calculations for structures are currently performed according to the American Society of Civil Engineers/ Structural Engineering Institute Standard ASCE/SEI 7; the values in this standard were calculated from simplified models that do not necessarily take into account relevant characteristics such as those from full 3D effects, end effects, turbulence generation and dissipation, as well as minor effects derived from shear forces on installation brackets and other accessories. This standard does not include provisions that address the special requirements of rooftop PV systems, and attempts to apply this standard may lead to significant design errors as wind loads are incorrectly estimated. Therefore, an accurate calculator would be of paramount importance for the preliminary assessments of the uplift and downforce loads on a PV mounting system, identifying viable solutions from available mounting systems, and therefore helping reduce the cost of the mounting system and installation. The challenge is that although a full-fledged three-dimensional computational fluid dynamics (CFD) analysis would properly and accurately capture the complete physical effects of air flow over PV systems, it would be impractical for this tool, which is intended to be a real-time web-based calculator. CFD routinely requires enormous computation times to arrive at solutions that can be deemed accurate and grid-independent even in powerful and massively parallel computer platforms. This work is expected not only to accelerate solar deployment nationwide, but also help reach the SunShot Initiative goals of reducing the total installed cost of solar energy systems by 75%. The largest percentage of the total installed cost of solar energy system is associated with balance of system cost, with up to 40% going to “soft” costs; which include customer acquisition, financing, contracting, permitting, interconnection, inspection, installation, performance, operations, and maintenance. The calculator that is being developed will provide wind loads in real-time for any solar system designs and suggest the proper installation configuration and hardware; and therefore, it is anticipated to reduce system design, installation and permitting costs.

  18. Ab initio Calculation of the np ? dy Radiative Capture Process

    E-Print Network [OSTI]

    Beane, Silas R.

    Lattice QCD calculations of two-nucleon systems are used to isolate the short-distance two-body electromagnetic contributions to the radiative capture process np ? d?, and the photo-disintegration processes ?[superscript ...

  19. AIM: Web-Based, Residential Energy Calculator for Homeowners 

    E-Print Network [OSTI]

    Marshall, K.; Moss, M.; Liu, B.; Culp, C.; Haberl, J.; Herbert, C.

    2010-01-01

    This paper discusses AIM, or Assess, Improve, Measure. AIM is an energy efficiency calculator for existing residences that has been developed to provide homeowners, realtors and builders with a method to rate the energy efficiency of an existing...

  20. Universal calculation formula and calibration method in Fourier transform profilometry

    SciTech Connect (OSTI)

    Wen Yongfu; Li Sikun; Cheng Haobo; Su Xianyu; Zhang Qican

    2010-12-01

    We propose a universal calculation formula of Fourier transform profilometry and give a strict theoretical analysis about the phase-height mapping relation. As the request on the experimental setup of the universal calculation formula is unconfined, the projector and the camera can be located arbitrarily to get better fringe information, which makes the operation flexible. The phase-height calibration method under the universal condition is proposed, which can avoid measuring the system parameters directly. It makes the system easy to manipulate and improves the measurement velocity. A computer simulation and experiment are conducted to verify its validity. The calculation formula and calibration method have been applied to measure an object of 22.00 mm maximal height. The relative error of the measurement result is only 0.59%. The experimental results prove that the three-dimensional shape of tested objects can be reconstructed exactly by using the calculation formula and calibration method, and the system has better universality.

  1. Calculating Residential Carbon Dioxide Emissions --A New Approach

    E-Print Network [OSTI]

    Hughes, Larry

    Calculating Residential Carbon Dioxide Emissions -- A New Approach Larry Hughes, Kathleen Bohan different sectors and their associated greenhouse gas emissions (principally carbon dioxide, methane of tables relating to national sources and sinks of greenhouse gases (principally carbon dioxide, methane, 1

  2. Reactor physics calculation of BWR fuel bundles containing gadolinia

    E-Print Network [OSTI]

    Morales, Diego

    1977-01-01

    A technique for the calculation of the neutronic behavior of BWR fuel bundles has been developed and applied to a Vermont Yankee fuel bundle. The technique is based on a diffusion theory treatment of the bundle, with ...

  3. Automating journey fare calculation for transport for London

    E-Print Network [OSTI]

    Maciejewski, Joshua J. (Joshua John)

    2008-01-01

    This thesis develops a method to automate journey fare calculation for Transport for London. Today, fares for every possible origin-destination station pair within the London Underground are prepared manually based on the ...

  4. Automated higher-order calculations: Status and prospects

    E-Print Network [OSTI]

    Giovanni Ossola

    2015-08-08

    In this presentation we review the current status in the automated evaluation of scattering amplitudes, with particular attention to the developments related with NLO calculations, which led to the construction of powerful multi-purpose computational tools. After a general overview, we will devote a short section to describe the GoSam framework for NLO calculations and its application to the production of Higgs boson plus jets. We will then briefly comment on the challenges presented by NNLO calculations, whose structure is considerably more complicated. Finally, we will describe some of the features of the integrand-reduction techniques beyond NLO, an alternative promising approach to multi-loop calculations which is currently under development.

  5. Automated higher-order calculations: Status and prospects

    E-Print Network [OSTI]

    Ossola, Giovanni

    2015-01-01

    In this presentation we review the current status in the automated evaluation of scattering amplitudes, with particular attention to the developments related with NLO calculations, which led to the construction of powerful multi-purpose computational tools. After a general overview, we will devote a short section to describe the GoSam framework for NLO calculations and its application to the production of Higgs boson plus jets. We will then briefly comment on the challenges presented by NNLO calculations, whose structure is considerably more complicated. Finally, we will describe some of the features of the integrand-reduction techniques beyond NLO, an alternative promising approach to multi-loop calculations which is currently under development.

  6. Monte Carlo Hauser-Feshbach Calculations of Prompt Fission Neutrons...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Monte Carlo Hauser-Feshbach Calculations of Prompt Fission Neutrons and Gamma Rays: Application to Thermal Neutron-Induced Fission Reactions on U-235 and Pu-239...

  7. Sequential Voronoi diagram calculations using simple chemical reactions

    E-Print Network [OSTI]

    Costello, Ben de Lacy; Adamatzky, Andy

    2012-01-01

    In our recent paper [de Lacy Costello et al. 2010] we described the formation of complex tessellations of the plane arising from the various reactions of metal salts with potassium ferricyanide and ferrocyanide loaded gels. In addition to producing colourful tessellations these reactions are naturally computing generalised Voronoi diagrams of the plane. The reactions reported previously were capable of the calculation of three distinct Voronoi diagrams of the plane. As diffusion coupled with a chemical reaction is responsible for the calculation then this is achieved in parallel. Thus an increase in the complexity of the data input does not utilise additional computational resource. Additional benefits of these chemical reactions is that a permanent record of the Voronoi diagram calculation (in the form of precipitate free bisectors) is achieved, so there is no requirement for further processing to extract the calculation results. Previously it was assumed that the permanence of the results was also a potenti...

  8. Guidelines for the analysis of free energy calculations

    E-Print Network [OSTI]

    Klimovich, PV; Shirts, MR; Mobley, DL; Mobley, DL

    2015-01-01

    Free energy calculations for Lennard-Jones systems and waterfree energy change is found as the negative of ?G waterenergy of hydrophobic hydration: A molecular dynam- ics study of noble gases in water.

  9. Calculation of Extreme Wave Loads on Coastal Highway Bridges 

    E-Print Network [OSTI]

    Meng, Bo

    2010-01-14

    Coastal bridges are exposed to severe wave, current and wind forces during a hurricane. Most coastal bridges are not designed to resist wave loads in such extreme situations, and there are no existing analytical methods to calculate wave loads...

  10. Dose Rate Calculations for Rotary Mode Core Sampling Exhauster

    SciTech Connect (OSTI)

    FOUST, D.J.

    2000-10-26

    This document provides the calculated estimated dose rates for three external locations on the Rotary Mode Core Sampling (RMCS) exhauster HEPA filter housing, per the request of Characterization Field Engineering.

  11. Protein Thermostability Calculations Using Alchemical Free Energy Simulations

    E-Print Network [OSTI]

    de Groot, Bert

    Protein Thermostability Calculations Using Alchemical Free Energy Simulations Daniel Seeliger by alterations in the free energy of folding. Growing computational power, however, increasingly allows us to use alchem- ical free energy simulations, such as free energy perturbation or thermodynamic integration

  12. Guidelines for the analysis of free energy calculations

    E-Print Network [OSTI]

    Klimovich, PV; Shirts, MR; Mobley, DL; Mobley, DL

    2015-01-01

    Efficient estimation of free energy differ- ences from Montenumerical instabilities in free energy calculations based onD.L. , DiCapua, F.M. : Free energy via molecular simulation:

  13. Is Ring breaking feasible in relative binding free energy calculations?

    E-Print Network [OSTI]

    Liu, S; Wang, L; Mobley, DL

    2015-01-01

    Essex, J. W. Rigorous Free Energy Calculations in Structure-of Hydration Free Energies for SAMPL. J. Comput. -Aided Mol.Basic Ingredients of Free Energy Calcula- tions: A Review.

  14. Calculating the hyper--Wiener index of benzenoid hydrocarbons

    E-Print Network [OSTI]

    Klavzar, Sandi

    Calculating the hyper--Wiener index of benzenoid hydrocarbons Petra Ÿ Zigert 1 , Sandi KlavŸ zar 1. (1) is not easy, especially in the case of large polycyclic molecules, such as benzenoid hydrocarbons

  15. Calculating the hyperWiener index of benzenoid hydrocarbons

    E-Print Network [OSTI]

    Klavzar, Sandi

    Calculating the hyper­Wiener index of benzenoid hydrocarbons Petra Zigert1 , Sandi Klavzar1) is not easy, especially in the case of large polycyclic molecules, such as benzenoid hydrocarbons. Some time

  16. Ab initio calculations of nuclear widths via an integral relation

    E-Print Network [OSTI]

    Kenneth M. Nollett

    2012-05-31

    I describe the computation of energy widths of nuclear states using an integral over the interaction region of ab initio variational Monte Carlo wave functions, and I present calculated widths for many states. I begin by presenting relations that connect certain short-range integrals to widths. I then present predicted widths for 5 integral relation, I conclude that overlap calculations can diagnose cases in which computed widths should not be trusted.

  17. Scoping calculations of power sources for nuclear electric propulsion

    SciTech Connect (OSTI)

    Difilippo, F.C. [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States)

    1994-05-01

    This technical memorandum describes models and calculational procedures to fully characterize the nuclear island of power sources for nuclear electric propulsion. Two computer codes were written: one for the gas-cooled NERVA derivative reactor and the other for liquid metal-cooled fuel pin reactors. These codes are going to be interfaced by NASA with the balance of plant in order to making scoping calculations for mission analysis.

  18. Accurate calculation of thermal noise in multilayer coating

    E-Print Network [OSTI]

    Alexey Gurkovsky; Sergey Vyatchanin

    2010-05-18

    We derive accurate formulas for thermal fluctuations in multilayer interferometric coating taking into account light propagation inside the coating. In particular, we calculate the reflected wave phase as a function of small displacements of the boundaries between the layers using transmission line model for interferometric coating and derive formula for spectral density of reflected phase in accordance with Fluctuation-Dissipation Theorem. We apply the developed approach for calculation of the spectral density of coating Brownian noise.

  19. Strategy Guideline. Accurate Heating and Cooling Load Calculations

    SciTech Connect (OSTI)

    Burdick, Arlan

    2011-06-01

    This guide presents the key criteria required to create accurate heating and cooling load calculations and offers examples of the implications when inaccurate adjustments are applied to the HVAC design process. The guide shows, through realistic examples, how various defaults and arbitrary safety factors can lead to significant increases in the load estimate. Emphasis is placed on the risks incurred from inaccurate adjustments or ignoring critical inputs of the load calculation.

  20. Strategy Guideline: Accurate Heating and Cooling Load Calculations

    SciTech Connect (OSTI)

    Burdick, A.

    2011-06-01

    This guide presents the key criteria required to create accurate heating and cooling load calculations and offers examples of the implications when inaccurate adjustments are applied to the HVAC design process. The guide shows, through realistic examples, how various defaults and arbitrary safety factors can lead to significant increases in the load estimate. Emphasis is placed on the risks incurred from inaccurate adjustments or ignoring critical inputs of the load calculation.

  1. Deep Learning in Speech Synthesis August 31st, 2013

    E-Print Network [OSTI]

    Cortes, Corinna

    Deep Learning in Speech Synthesis Heiga Zen Google August 31st, 2013 #12;Outline Background Deep Learning Deep Learning in Speech Synthesis Motivation Deep learning-based approaches DNN-based statistical-to-speech synthesis (TTS) Text (discrete symbol sequence) Speech (continuous time series) Heiga Zen Deep Learning

  2. Deep Learning Representation using Autoencoder for 3D Shape Retrieval

    E-Print Network [OSTI]

    Deep Learning Representation using Autoencoder for 3D Shape Retrieval Zhuotun Zhu, Xinggang Wang@hust.edu.cn Abstract--We study the problem of how to build a deep learning representation for 3D shape. Deep learning the features learned on 2D images. In addition, we show the proposed deep learning feature is complementary

  3. Is Machine Learning the Wrong Name? Xiaojin Zhu

    E-Print Network [OSTI]

    Zhu, Xiaojin "Jerry"

    Is Machine Learning the Wrong Name? Xiaojin Zhu Department of Computer Sciences University of Wisconsin-Madison October 2010 (University of Wisconsin) Is Machine Learning the Wrong Name? 1 / 33 #12;Iris Learns "Cow" (University of Wisconsin) Is Machine Learning the Wrong Name? 2 / 33 #12;Iris Learns "Cow

  4. Learning in a Studio Mode, Spotlighting Teamwork and

    E-Print Network [OSTI]

    Lin, Xi

    students supported by one instructor, 2 TF's, and 2 LA's" Focus on teamwork & active engagement" Learning student-centered active learning. 3/7/14Learning in a Studio Mode Why do Studio? Better learning overall Students like it better #12;3 Class design: Lecture 3/7/14Learning in a Studio Mode Lecture

  5. Transformative Learning Purple Paper Truman State University Summer 2011

    E-Print Network [OSTI]

    Gering, Jon C.

    of reflection and critical thinking. Transformative learning, however, focuses specifically on critical self learning involves deep learning but not all deep learning results in transformation. Given that the focus into student participation in transformative learning. Truman Portfolio Results Summary: 86% of gradua

  6. STUDENT LEARNING COMMONS Annual Report 2007/08

    E-Print Network [OSTI]

    and support students in their academic pursuits, with a focus on providing writing and learning supportSTUDENT LEARNING COMMONS Annual Report 2007/08 Elaine Fairey, Director, Student Learning Commons ______________________________________________________________________________________ Introduction The Student Learning Commons (SLC) is an academic learning centre with the mandate to assist

  7. MOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker

    E-Print Network [OSTI]

    Parker, Lynne E.

    MOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker Department of Electrical Engineering and Computer in robot learning; Macro actions in robot learning; Basis behaviors for robot learning. Definition Motor, or a task. Motor schemas in robot learning are also known as movement primitives, basis behaviors, units

  8. EUROGRAPHICS 2008 Education Papers Computer Graphics: Problem Based Learning and

    E-Print Network [OSTI]

    Baldassarri, Sandra

    Abstract This paper focuses on the use of new tools in order to improve the learning of Computer Graphics. By combining these ideas, we obtain an interactive learning environment created to improve student's learning at the birth of an interactive learning environment created to improve student's learning capabilities. The use

  9. Graphical User Interface for Simplified Neutron Transport Calculations

    SciTech Connect (OSTI)

    Schwarz, Randolph; Carter, Leland L

    2011-07-18

    A number of codes perform simple photon physics calculations. The nuclear industry is lacking in similar tools to perform simplified neutron physics shielding calculations. With the increased importance of performing neutron calculations for homeland security applications and defense nuclear nonproliferation tasks, having an efficient method for performing simple neutron transport calculations becomes increasingly important. Codes such as Monte Carlo N-particle (MCNP) can perform the transport calculations; however, the technical details in setting up, running, and interpreting the required simulations are quite complex and typically go beyond the abilities of most users who need a simple answer to a neutron transport calculation. The work documented in this report resulted in the development of the NucWiz program, which can create an MCNP input file for a set of simple geometries, source, and detector configurations. The user selects source, shield, and tally configurations from a set of pre-defined lists, and the software creates a complete MCNP input file that can be optionally run and the results viewed inside NucWiz.

  10. Iterative acceleration methods for Monte Carlo and deterministic criticality calculations

    SciTech Connect (OSTI)

    Urbatsch, T.J.

    1995-11-01

    If you have ever given up on a nuclear criticality calculation and terminated it because it took so long to converge, you might find this thesis of interest. The author develops three methods for improving the fission source convergence in nuclear criticality calculations for physical systems with high dominance ratios for which convergence is slow. The Fission Matrix Acceleration Method and the Fission Diffusion Synthetic Acceleration (FDSA) Method are acceleration methods that speed fission source convergence for both Monte Carlo and deterministic methods. The third method is a hybrid Monte Carlo method that also converges for difficult problems where the unaccelerated Monte Carlo method fails. The author tested the feasibility of all three methods in a test bed consisting of idealized problems. He has successfully accelerated fission source convergence in both deterministic and Monte Carlo criticality calculations. By filtering statistical noise, he has incorporated deterministic attributes into the Monte Carlo calculations in order to speed their source convergence. He has used both the fission matrix and a diffusion approximation to perform unbiased accelerations. The Fission Matrix Acceleration method has been implemented in the production code MCNP and successfully applied to a real problem. When the unaccelerated calculations are unable to converge to the correct solution, they cannot be accelerated in an unbiased fashion. A Hybrid Monte Carlo method weds Monte Carlo and a modified diffusion calculation to overcome these deficiencies. The Hybrid method additionally possesses reduced statistical errors.

  11. A Case Study of the Applied Learning Academy: Reconceptualized Quantum Design of Applied Learning 

    E-Print Network [OSTI]

    Gordon, Denise

    2010-07-14

    The purpose of this qualitative study was to examine the Applied Learning Academy (ALA) and allow the lessons learned from this public school to emerge from the narrative stories of past students, parents, teachers, administrators, and local...

  12. Sentential Cross-Situational Learning: The Combined Efforts Of Statistical And Syntactic Cues In Word Learning 

    E-Print Network [OSTI]

    Panamsky, Lilia

    2011-11-23

    Recently, cross-situational word learning (XSL) has gained attention as a viable mechanism for learning the meaning of words. XSL refers to the tracking of wordreferent pairs over a series of different exposures (Siskind, ...

  13. SCWR Once-Through Calculations for Transmutation and Cross Sections

    SciTech Connect (OSTI)

    ganda, francesco

    2012-07-01

    It is the purpose of this report to document the calculation of (1) the isotopic evolution and of (2) the 1-group cross sections as a function of burnup of the reference Super Critical Water Reactor (SCWR), in a format suitable for the Fuel Cycle Option Campaign Transmutation Data Library. The reference SCWR design was chosen to be that described in [McDonald, 2005]. Super Critical Water Reactors (SCWR) are intended to operate with super-critical water (i.e. H2O at a pressure above 22 MPa and a temperature above 373oC) as a cooling – and possibly also moderating – fluid. The main mission of the SCWR is to generate lower cost electricity, as compared to current standard Light Water Reactors (LWR). Because of the high operating pressure and temperature, SCWR feature a substantially higher thermal conversion efficiency than standard LWR – i.e. about 45% versus 33%, mostly due to an increase in the exit water temperature from ~300oC to ~500oC – potentially resulting in a lower cost of generated electricity. The coolant remains single phase throughout the reactor and the energy conversion system, thus eliminating the need for pressurizers, steam generators, steam separators and dryers, further potentially reducing the reactor construction capital cost. The SCWR concept presented here is based on existing LWR technology and on a large number of existing fossil-fired supercritical boilers. However, it was concluded in [McDonald, 2005], that: “Based on the results of this study, it appears that the reference SCWR design is not feasible.” This conclusion appears based on the strong sensitivity of the design to small deviations in nominal conditions leading to small effects having a potentially large impact on the peak cladding temperature of some fuel rods. “This was considered a major feasibility issue for the SCWR” [McDonald, 2005]. After a description of the reference SCWR design, the Keno V 3-D single assembly model used for this analysis, as well as the calculated results, are presented. Additionally, the follwing information, presented in the appendixes, is intended to provide enough guidance that a researcher repeating the same task in the future should be able to obtain a vector of nuclei and cross sections ready for insertion into the transmutation library without any need for further instructions: (1) Complete TRITON/KENO-V input used for the analysis; (2) Inputs and detailed description of the usage of the OPUS utility, used to postproces and to extract the nuclei concentrations for the transmutation library; (3) Inputs and detailed description of the usage of the XSECLIST utility, used to postproces and to extract the 1-group cross sections for the transmutation library; (4) Details of an ad-hoc utility program developed to sort the nuclei and cross sections for the transmutation library.

  14. Influence of polarization and a source model for dose calculation in MRT

    SciTech Connect (OSTI)

    Bartzsch, Stefan Oelfke, Uwe; Lerch, Michael; Petasecca, Marco; Bräuer-Krisch, Elke

    2014-04-15

    Purpose: Microbeam Radiation Therapy (MRT), an alternative preclinical treatment strategy using spatially modulated synchrotron radiation on a micrometer scale, has the great potential to cure malignant tumors (e.g., brain tumors) while having low side effects on normal tissue. Dose measurement and calculation in MRT is challenging because of the spatial accuracy required and the arising high dose differences. Dose calculation with Monte Carlo simulations is time consuming and their accuracy is still a matter of debate. In particular, the influence of photon polarization has been discussed in the literature. Moreover, it is controversial whether a complete knowledge of phase space trajectories, i.e., the simulation of the machine from the wiggler to the collimator, is necessary in order to accurately calculate the dose. Methods: With Monte Carlo simulations in the Geant4 toolkit, the authors investigate the influence of polarization on the dose distribution and the therapeutically important peak to valley dose ratios (PVDRs). Furthermore, the authors analyze in detail phase space information provided byMartínez-Rovira et al. [“Development and commissioning of a Monte Carlo photon model for the forthcoming clinical trials in microbeam radiation therapy,” Med. Phys. 39(1), 119–131 (2012)] and examine its influence on peak and valley doses. A simple source model is developed using parallel beams and its applicability is shown in a semiadjoint Monte Carlo simulation. Results are compared to measurements and previously published data. Results: Polarization has a significant influence on the scattered dose outside the microbeam field. In the radiation field, however, dose and PVDRs deduced from calculations without polarization and with polarization differ by less than 3%. The authors show that the key consequences from the phase space information for dose calculations are inhomogeneous primary photon flux, partial absorption due to inclined beam incidence outside the field center, increased beam width and center to center distance due to the beam propagation from the collimator to the phantom surface and imperfect absorption in the absorber material of the Multislit Collimator. These corrections have an effect of approximately 10% on the valley dose and suffice to describe doses in MRT within the measurement uncertainties of currently available dosimetry techniques. Conclusions: The source for the first clinical pet trials in MRT is characterized with respect to its phase space and the photon polarization. The results suggest the use of a presented simplified phase space model in dose calculations and hence pave the way for alternative and fast dose calculation algorithms. They also show that the polarization is of minor importance for the clinical important peak and valley doses inside the microbeam field.

  15. Decomposition Techniques for Learning Graphical Models

    E-Print Network [OSTI]

    Refaat, Khaled

    2015-01-01

    Workshop on Artificial Intelligence and Statistics, pp. 112–Lectures on Artificial Intelligence and Machine Learning.on Uncertainty in Artificial Intelligence. Thiesson, B. ,

  16. Exploiting tag correlations to improve multilabel learning

    E-Print Network [OSTI]

    Payne, Brent

    2011-01-01

    and Perry Cook. Easy as cba: A simple probabilistic modelcodeword Bernoulli average (CBA) models for learning eachaudio features [9]. The CBA models produce the best previous

  17. Lessons Learned in Islands | Department of Energy

    Energy Savers [EERE]

    Learn how Barbados successfully overcame market barriers to widespread implementation of solar water heaters. U.S. Virgin Islands Clears the Way for Unprecedented Levels of Solar...

  18. Lessons Learned Quarterly Report, June 2003

    Broader source: Energy.gov [DOE]

    Welcome to the 35th quarterly report on lessons learned in the NEPA process. We are pleased to include in this issue three new mini-guidance articles.

  19. Lessons Learned Quarterly Report, September 1999

    Office of Energy Efficiency and Renewable Energy (EERE)

    Welcome to the 20th Quarterly Report on lessons learned in the NEPA process. This issue includes a cumulative index for the past five years.

  20. Immersive Learning Environments for Teaching Software Engineering

    E-Print Network [OSTI]

    Cooper, R.; Cutts, Q.; Wang, C.; Proceedings of the Third Workshiop on Teaching, Learning and Assessment of Database Systems [More Details

    Cooper,R. Cutts,Q. Wang,C. Proceedings of the Third Workshiop on Teaching, Learning and Assessment of Database Systems

  1. Looking for project-based learning ...

    Office of Environmental Management (EM)

    Looking for project-based learning activities to incorporate energy into your classroom or program? Explore these K-12 resources to get started today. The Office of Energy...

  2. DLA Energy Contracting Renewable Projects Lessons Learned

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

    SUPPORT AGENCY WARFIGHTER SUPPORT STEWARDSHIP EXCELLENCE WORKFORCE DEVELOPMENT DLA Energy Contracting Renewable Projects Lessons Learned Andrea L. Kincaid Division Chief and...

  3. Ab-initio calculation of the photonuclear cross section of $^{10}$B

    E-Print Network [OSTI]

    M. K. G. Kruse; W. E. Ormand; C. W. Johnson

    2015-02-11

    We present for the first-time the photonuclear cross section of $^{10}$B calculated within the ab-initio No Core Shell Model framework. Realistic two-nucleon (NN) chiral forces up to next-to-next-to-next-order (N3LO), which have been softened by the similarity renormalization group method (SRG) to $\\lambda=2.02$ fm$^{-1}$, were utilized. The electric-dipole response function is calculated using the Lanczos method. The effects of the continuum were accounted for by including neutron escape widths derived from R-matrix theory. The calculated cross section agrees well with experimental data in terms of structure as well as in absolute peak height, $\\sigma_{\\rm max}=4.85~{\\rm mb}$ at photon energy $\\omega=23.61~{\\rm MeV}$, and integrated cross section $85.36\\, {\\rm MeV \\cdotp mb}$. We test the Brink hypothesis by calculating the electric-dipole response for the first five positive-parity states in $^{10}$B and verify that dipole excitations built upon the ground- and excited states have similar characteristics.

  4. Calculated and measured drift closure during the spent-fuel test in Climax granite

    SciTech Connect (OSTI)

    Yow, J.L. Jr.; Butkovich, T.R.

    1982-04-01

    Horizontal and vertical measurements of drift closures have been made with a manually operated tape extensometer since about 6 weeks after the emplacement of the spent fuel at various locations along the length of the drifts. The averaged closures are less than 0.6 mm from the onset of measurements through about two years after the spent fuel emplacement. These results have been compared with thermo-elastic finite element calculations using measured medium properties. The comparisons show that most of the closure of the drifts occurred between the time the spent fuel was emplaced and the time of first measurement. The comparisons show that the results track each other, in that where closure followed by dilation is measured, the calculations also show this effect. The agreement is excellent, although where closures of less than 0.2 mm are measured the comparison with calculations is limited by measurement reproducability. Once measurements commenced the averaged measured closures remain to within 30% of the calculated total closure in each drift. 9 figures, 1 table.

  5. Calculations conducted in developing an audit capability for ECCS analysis. [PWR

    SciTech Connect (OSTI)

    Bartel, T.J.; Berman, M.; Byers, R.K.; Cole, R.K. Jr.

    1981-12-01

    This study has demonstrated the capability of combining the results of thermal-hydraulic and fuel rod response computer codes to produce audit-type calculations for a pressurized water reactor equipped with a relatively new form of emergency core cooling systems. Models intended specifically for use with such systems were incorporated into the codes, sample calculations were performed, and very cursory comparisons with vendor-supplied results were made. In calculations of the blowdown phase of a large break loss-of-coolant accident, models for fuel rod surface quenching and for separated two-phase flow were observed to have significant effects on peak cladding temperatures and on system conditions at the beginning of core reflood. Models used for the reflood phase, particularly the model for carryover-rate fraction, were also seen to have important consequences. While the demonstration of audit capability was successful, there remain questions connected with details of coupling between the codes, and with uniformity of models as used in all phases of the calculations.

  6. Investigation of the Accuracy of Calculation Methods for Conduction Transfer Functions of Building Construction 

    E-Print Network [OSTI]

    Chen, Y.; Li, X.; Zhang, Q.; Spitler, J.; Fisher, D.

    2006-01-01

    Conduction transfer functions (CTFs) are widely used to calculate conduction heat transfer in building cooling load and energy calculations. They can conveniently fit into any load and energy calculation techniques to perform conduction calculations...

  7. Assessing Student Learning: Overview Page 1 AssessingStudentLearning:Overview

    E-Print Network [OSTI]

    Dyer, Bill

    are focusing more on what the students have learned (somewhere), rather than on what is covered Assessing Student Learning: Overview Page 1 AssessingStudentLearning:Overview September 12. The primary assessment of degree programs for accreditation purposes is focused on verifying that students

  8. Story-based Learning: The Impact of Narrative on Learning Experiences and Outcomes

    E-Print Network [OSTI]

    Young, R. Michael

    that students do exhibit learning gains, that those gains are less than those produced by traditional the promise of adaptive, motivating learning experiences to students. NLEs are currently under investigation focused on developing AI-based approaches that provide rich, adaptive narrative-based learning experiences

  9. WHAT HAVE WE LEARNED FROM TEACHING CONFERENCES AND RESEARCH ON LEARNING IN BIOMECHANICS?

    E-Print Network [OSTI]

    Cooper, Robin L.

    WHAT HAVE WE LEARNED FROM TEACHING CONFERENCES AND RESEARCH ON LEARNING IN BIOMECHANICS? Duane Knudson Texas State University, San Marcos, TX, USA A narrative review was conducted of biomechanics on student learning. Recent progress has been made in standardized tests of biomechanical concepts

  10. One-Benefit learning: Cost-sensitive learning with restricted cost information

    E-Print Network [OSTI]

    Weiss, Gary

    @us.ibm.com ABSTRACT This paper presents a new formulation for cost-sensitive learning that we call the One values. Each entry C(i, j) gives the cost of predicting class i for an example whose actual class is jOne-Benefit learning: Cost-sensitive learning with restricted cost information Bianca Zadrozny IBM

  11. Evolution versus Temporal Difference Learning for Learning to Play Ms. Pac-Man

    E-Print Network [OSTI]

    Lucas, Simon M.

    of a system to learn to play Ms. Pac-Man. For this study Ms. Pac-Man provides a game of appropriate complexityEvolution versus Temporal Difference Learning for Learning to Play Ms. Pac-Man Peter Burrow-layer perceptrons. I. INTRODUCTION Ms. Pac-Man is a classic computer game which has the advantage of being complex

  12. Solar Reflectance Index Calculation Worksheet Instructions The purpose of this calculator is to enable contractors and homeowners to quickly and accurately

    E-Print Network [OSTI]

    Solar Reflectance Index Calculation Worksheet Instructions Usage: The purpose of this calculator is to enable contractors and homeowners to quickly and accurately calculate the solar reflectance product exceeds the Building Energy Efficiency Standards requirement for either the aged solar

  13. Energy Learning Exchange 2014-15 Year-End Report

    E-Print Network [OSTI]

    Branoff, Theodore J.

    Energy Learning Exchange 2014-15 Year-End Report June 2015 #12;#12;Introduction to the Energy ................................................................................................2 What is the Energy Learning Exchange (ELE......................................................................................................................................6 Achieving the Objectives of the Energy Learning Exchange

  14. Wireless bridges : the laptop experience in the learning environment

    E-Print Network [OSTI]

    Lee, Sophia J. (Sophia Juhee), 1977-

    2003-01-01

    The Laptop experience has changed the way people work and interact with learning space. The integration of technology in learning environments affects the usage of space and produces new learning patterns. However, new ...

  15. SEARCHING FOR THE HOLY GRAIL OF LEARNING OUTCOMES

    E-Print Network [OSTI]

    Douglass, John A

    2012-01-01

    Paper * SEARCHING FOR THE HOLY GRAIL OF LEARNING OUTCOMES **The search for the Holy Grail to measure learning gainsTHOMSON and ZHAO: The Holy Grail of Learning Outcomes

  16. District-school leadership for organizational learning : finding the balance

    E-Print Network [OSTI]

    Umekubo, Lisa Ann

    2012-01-01

    Learning: Finding the Balance Lisa A. Umekubo, a researcher/Learning: Finding the Balance CVESD has made an impact byLearning: Finding the Balance CVESD has made an impact by

  17. May 2015 Seismic Lessons-Learned Panel Meeting Agenda | Department...

    Office of Environmental Management (EM)

    May 2015 Seismic Lessons-Learned Panel Meeting Agenda May 2015 Seismic Lessons-Learned Panel Meeting Agenda Agenda for the May 2015 Seismic Lessons-Learned Panel Meeting held at...

  18. Rutgers Business School Master of Information Technology Program Learning Goals

    E-Print Network [OSTI]

    Rutgers Business School Master of Information Technology Program Learning Goals 1. Communication Skills Learning Goal Students graduating with a Master of Information Technology degree will be able relatively complex ideas in an understandable manner. 2. Information Technology Knowledge Learning Goal

  19. Inquiry-Based Learning: An Educational Reform Based

    E-Print Network [OSTI]

    McLoughlin, Padraig

    -Based Learning: An Educational Reform Based Upon Content-Centred Teaching. 1046-Centred Educational Reform 3 III Inquiry-Based Learning Pedagogy is Content 27 #12; ii Abstract Inquiry-Based Learning: An Educational Reform

  20. Use of the Hebb-Williams closed-field maze to determine learning ability in yearling horses 

    E-Print Network [OSTI]

    McCall, Cynthia Ann

    1979-01-01

    learning parameters were calculated: (1) total excess entry scores (TExES), (2) rapi dity of learning score (XR), the percent of total excess entries occurring during the first four trials of each problem; (3) error elimination score (EES...), the difference between excess entries made on the first four and last four trials expressed as a percent of TExES: (4) visual ability score (XP), the percent of the TExES that occurred on problems with a direct visual solution. The mean TExES was fairly high...