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1

TIME-LAPSE SEISMIC MODELING & INVERSION OF CO2 SATURATION FOR SEQUESTRATION AND ENHANCED OIL RECOVERY  

SciTech Connect

Injection of carbon dioxide (CO2) into subsurface aquifers for geologic storage/sequestration, and into subsurface hydrocarbon reservoirs for enhanced oil recovery, has become an important topic to the nation because of growing concerns related to global warming and energy security. In this project we developed new ways to predict and quantify the effects of CO2 on seismic data recorded over porous reservoir/aquifer rock systems. This effort involved the research and development of new technology to: (1) Quantitatively model the rock physics effects of CO2 injection in porous saline and oil/brine reservoirs (both miscible and immiscible). (2) Quantitatively model the seismic response to CO2 injection (both miscible and immiscible) from well logs (1D). (3) Perform quantitative inversions of time-lapse 4D seismic data to estimate injected CO2 distributions within subsurface reservoirs and aquifers. This work has resulted in an improved ability to remotely monitor the injected CO2 for safe storage and enhanced hydrocarbon recovery, predict the effects of CO2 on time-lapse seismic data, and estimate injected CO2 saturation distributions in subsurface aquifers/reservoirs. We applied our inversion methodology to a 3D time-lapse seismic dataset from the Sleipner CO2 sequestration project, Norwegian North Sea. We measured changes in the seismic amplitude and traveltime at the top of the Sleipner sandstone reservoir and used these time-lapse seismic attributes in the inversion. Maps of CO2 thickness and its standard deviation were generated for the topmost layer. From this information, we estimated that 7.4% of the total CO2 injected over a five-year period had reached the top of the reservoir. This inversion approach could also be applied to the remaining levels within the anomalous zone to obtain an estimate of the total CO2 injected.

Mark A. Meadows

2006-03-31T23:59:59.000Z

2

Entropy-Bayesian Inversion of Time-Lapse Tomographic GPR data for Monitoring Dielectric Permittivity and Soil Moisture Variations  

SciTech Connect

In this study, we evaluate the possibility of monitoring soil moisture variation using tomographic ground penetrating radar travel time data through Bayesian inversion, which is integrated with entropy memory function and pilot point concepts, as well as efficient sampling approaches. It is critical to accurately estimate soil moisture content and variations in vadose zone studies. Many studies have illustrated the promise and value of GPR tomographic data for estimating soil moisture and associated changes, however, challenges still exist in the inversion of GPR tomographic data in a manner that quantifies input and predictive uncertainty, incorporates multiple data types, handles non-uniqueness and nonlinearity, and honors time-lapse tomograms collected in a series. To address these challenges, we develop a minimum relative entropy (MRE)-Bayesian based inverse modeling framework that non-subjectively defines prior probabilities, incorporates information from multiple sources, and quantifies uncertainty. The framework enables us to estimate dielectric permittivity at pilot point locations distributed within the tomogram, as well as the spatial correlation range. In the inversion framework, MRE is first used to derive prior probability distribution functions (pdfs) of dielectric permittivity based on prior information obtained from a straight-ray GPR inversion. The probability distributions are then sampled using a Quasi-Monte Carlo (QMC) approach, and the sample sets provide inputs to a sequential Gaussian simulation (SGSim) algorithm that constructs a highly resolved permittivity/velocity field for evaluation with a curved-ray GPR forward model. The likelihood functions are computed as a function of misfits, and posterior pdfs are constructed using a Gaussian kernel. Inversion of subsequent time-lapse datasets combines the Bayesian estimates from the previous inversion (as a memory function) with new data. The memory function and pilot point design takes advantage of the spatial-temporal correlation of the state variables. We first apply the inversion framework to a static synthetic example and then to a time-lapse GPR tomographic dataset collected during a dynamic experiment conducted at the Hanford Site in Richland, WA. We demonstrate that the MRE-Bayesian inversion enables us to merge various data types, quantify uncertainty, evaluate nonlinear models, and produce more detailed and better resolved estimates than straight-ray based inversion; therefore, it has the potential to improve estimates of inter-wellbore dielectric permittivity and soil moisture content and to monitor their temporal dynamics more accurately.

Hou, Z; Terry, N; Hubbard, S S; Csatho, B

2013-02-12T23:59:59.000Z

3

Entropy-Bayesian Inversion of Time-Lapse Tomographic GPR data for Monitoring Dielectric Permittivity and Soil Moisture Variations  

SciTech Connect

In this study, we evaluate the possibility of monitoring soil moisture variation using tomographic ground penetrating radar travel time data through Bayesian inversion, which is integrated with entropy memory function and pilot point concepts, as well as efficient sampling approaches. It is critical to accurately estimate soil moisture content and variations in vadose zone studies. Many studies have illustrated the promise and value of GPR tomographic data for estimating soil moisture and associated changes, however, challenges still exist in the inversion of GPR tomographic data in a manner that quantifies input and predictive uncertainty, incorporates multiple data types, handles non-uniqueness and nonlinearity, and honors time-lapse tomograms collected in a series. To address these challenges, we develop a minimum relative entropy (MRE)-Bayesian based inverse modeling framework that non-subjectively defines prior probabilities, incorporates information from multiple sources, and quantifies uncertainty. The framework enables us to estimate dielectric permittivity at pilot point locations distributed within the tomogram, as well as the spatial correlation range. In the inversion framework, MRE is first used to derive prior probability density functions (pdfs) of dielectric permittivity based on prior information obtained from a straight-ray GPR inversion. The probability distributions are then sampled using a Quasi-Monte Carlo (QMC) approach, and the sample sets provide inputs to a sequential Gaussian simulation (SGSIM) algorithm that constructs a highly resolved permittivity/velocity field for evaluation with a curved-ray GPR forward model. The likelihood functions are computed as a function of misfits, and posterior pdfs are constructed using a Gaussian kernel. Inversion of subsequent time-lapse datasets combines the Bayesian estimates from the previous inversion (as a memory function) with new data. The memory function and pilot point design takes advantage of the spatial-temporal correlation of the state variables. We first apply the inversion framework to a static synthetic example and then to a time-lapse GPR tomographic dataset collected during a dynamic experiment conducted at the Hanford Site in Richland, WA. We demonstrate that the MRE-Bayesian inversion enables us to merge various data types, quantify uncertainty, evaluate nonlinear models, and produce more detailed and better resolved estimates than straight-ray based inversion; therefore, it has the potential to improve estimates of inter-wellbore dielectric permittivity and soil moisture content and to monitor their temporal dynamics more accurately.

Hou, Zhangshuan; Terry, Neil C.; Hubbard, Susan S.

2013-02-22T23:59:59.000Z

4

TIME-LAPSE MODELING AND INVERSION OF CO{sub 2} SATURATION FOR SEQUESTRATION AND ENHANCED OIL RECOVERY  

SciTech Connect

In the second quarter of this DOE NETL project, we have continued Phase I and Phase II activities for researching and developing new technology to quantitatively model the rock physics effects of CO{sub 2}-oil-water systems. These activities included completing a literature search of currently available equation-of-state methods, initiating work in molecular dynamics modeling, and building a prototype seismic modeling code for predicting time-lapse CO{sub 2} changes in well-log models. We have also received permission to use the Sleipner time-lapse CO{sub 2} data set from the North Sea for the current NETL project, and have issued a formal request for the data.

Mark A. Meadows

2004-05-10T23:59:59.000Z

5

Final Report: Improved Site Characterization And Storage Prediction Through Stochastic Inversion Of Time-Lapse Geophysical And Geochemical Data  

SciTech Connect

During the last months of this project, our project activities have concentrated on four areas: (1) performing a stochastic inversion of pattern 16 seismic data to deduce reservoir bulk/shear moduli and density; the need for this inversion was not anticipated in the original scope of work, (2) performing a stochastic inversion of pattern 16 seismic data to deduce reservoir porosity and permeability, (3) complete the software needed to perform geochemical inversions and (4) use the software to perform stochastic inversion of aqueous chemistry data to deduce mineral volume fractions. This report builds on work described in progress reports previously submitted (Ramirez et al., 2009, 2010, 2011 - reports fulfilled the requirements of deliverables D1-D4) and fulfills deliverable D5: Field-based single-pattern simulations work product. The main challenge with our stochastic inversion approach is its large computational expense, even for single reservoir patterns. We dedicated a significant level of effort to improve computational efficiency but inversions involving multiple patterns were still intractable by project's end. As a result, we were unable to fulfill Deliverable D6: Field-based multi-pattern simulations work product.

Ramirez, A; Mcnab, W; Hao, Y; White, D; Johnson, J

2011-04-14T23:59:59.000Z

6

Compensating for temperature variations in time-lapse electrical resistivity difference imaging  

E-Print Network (OSTI)

-compensated data, inversions have been car- ried out on two synthetic data sets and a field example. Differ- encing corrections to be ap- plied to time-lapse difference inversion schemes and hydro- geophysical inversion where

7

Progress Report, December 2010: Improved Site Characterization And Storage Prediction Through Stochastic Inversion Of Time-Lapse Geophysical And Geochemical Data  

Science Conference Proceedings (OSTI)

Over the last project six months, our project activities have concentrated on three areas: (1) performing a stochastic inversion of pattern 16 seismic data to deduce reservoir permeability, (2) development of the geochemical inversion strategy and implementation of associated software, and (3) completing the software implementation of TProGS and the geostatistical analysis that provides the information needed when using the software to produce realizations of the Midale reservoir. The report partially the following deliverables: D2: Model development: MCMC tool (synthetic fluid chemistry data); deliverable completed. D4: Model development/verification: MCMC tool (TProGS, field seismic/chemistry data) work product; deliverable requirements partially fulfilled. D5: Field-based single-pattern simulations work product; deliverable requirements partially fulfilled. When completed, our completed stochastic inversion tool will explicitly integrate reactive transport modeling, facies-based geostatistical methods, and a novel stochastic inversion technique to optimize agreement between observed and predicted storage performance. Such optimization will be accomplished through stepwise refinement of: (1) the reservoir model - principally its permeability magnitude and heterogeneity - and (2) geochemical parameters - primarily key mineral volume fractions and kinetic data. We anticipate that these refinements will facilitate significantly improved history matching and forward modeling of CO{sub 2} storage. Our tool uses the Markov Chain Monte Carlo (MCMC) methodology. Deliverable D1, previously submitted as a report titled ''Development of a Stochastic Inversion Tool To Optimize Agreement Between The Observed And Predicted Seismic Response To CO{sub 2} Injection/Migration in the Weyburn-Midale Project'' (Ramirez et al., 2009), described the stochastic inversion approach that will identify reservoir models that optimize agreement between the observed and predicted seismic response. The software that implements this approach has been completed, tested, and used to process seismic data from pattern 16. A previously submitted report titled ''Model verification: synthetic single pattern simulations using seismic reflection data'', Ramirez et al. 2010, partially fulfilled deliverable D3 by summarizing verification activities that evaluate the performance of the seismic software and its ability to recover reservoir model permeabilities using synthetic seismic reflection data. A future progress report will similarly describe summarizing verification activities of the geochemical inversion software, thereby completing deliverable D3. This document includes a chapter that shows and discusses permeability models produced by seismic inversion that used seismic data from pattern 16 in Phase 1A. It partially fulfills deliverable D5: Field-based single-pattern simulations work product. The D5 work product is supposed to summarize the results of applying NUFT/MCMC to refine the reservoir model and geochemical parameters by optimizing observation/prediction agreement for the seismic/geochemical response to CO{sub 2} injection/migration within a single pattern of Phase 1A/1B. A future progress report will show inversion results for the same pattern using geochemical data, thereby completing deliverable D5. This document also contains a chapter that fulfills deliverable D2: Model development: MCMC tool (synthetic fluid chemistry data). The chapter will summarize model development activities required to facilitate application of NUFT/MCMC to optimize agreement between the observed and predicted geochemical response to CO{sub 2} injection/migration. Lastly, this document also contains a chapter that partially fulfills deliverable D4: Model development/verification: MCMC tool (TProGS, field seismic/chemistry data) work product. This work product is supposed to summarize model development activities required for (1) application of TProGS to Weyburn, (2) use of TProGS within the MCMC tool, and (3) application of the MCMC tool to address field seismic and g

Ramirez, A; Mcnab, W; Carle, S; Hao, Y; White, D; Johnson, J

2010-12-17T23:59:59.000Z

8

Time-lapse gravity: A numerical demonstration using robust inversion and joint interpretation of 4D surface and borehole data  

E-Print Network (OSTI)

(Davis et al., 2008), waterflood surveillance (Meyer, 2008; Ferguson et al., 2008; Nind et al., 2007b

9

Seismic imaging of reservoir flow properties: Time-lapse amplitude changes  

Science Conference Proceedings (OSTI)

Asymptotic methods provide an efficient means by which to infer reservoir flow properties, such as permeability, from time-lapse seismic data. A trajectory-based methodology, much like ray-based methods for medical and seismic imaging, is the basis for an iterative inversion of time-lapse amplitude changes. In this approach a single reservoir simulation is required for each iteration of the algorithm. A comparison between purely numerical and the trajectory-based sensitivities demonstrates their accuracy. An application to a set of synthetic amplitude changes indicates that they can recover large-scale reservoir permeability variations from time-lapse data. In an application of actual time-lapse amplitude changes from the Bay Marchand field in the Gulf of Mexico we are able to reduce the misfit by 81% in twelve iterations. The time-lapse observations indicate lower permeabilities are required in the central portion of the reservoir.

Vasco, D.W.; Datta-Gupta, Akhil; Behrens, Ron; Condon, Pat; Rickett, Jame s

2003-03-13T23:59:59.000Z

10

IP4DI: A software for time-lapse 2D/3D DC-resistivity and induced polarization tomography  

Science Conference Proceedings (OSTI)

We propose a 2D/3D forward modelling and inversion package to invert direct current (DC)-resistivity, time-domain induced polarization (TDIP), and frequency-domain induced polarization (FDIP) data. Each cell used for the discretization of the 2D/3D problems ... Keywords: Induced polarization, Inversion, Resistivity, Time-lapse

M. Karaoulis, A. Revil, P. Tsourlos, D. D. Werkema, B. J. Minsley

2013-04-01T23:59:59.000Z

11

Four-Dimensional Holograms from Time-Lapse Cinematography  

Science Conference Proceedings (OSTI)

New techniques in holography allow standard motion picture film to be converted to holograms that are visible with standard light sources. Time-lapse photographs of clouds have been converted to two types of holograms. One hologram was made from ...

Ronald L. Holle; Mark C. Diamond

1985-09-01T23:59:59.000Z

12

DOE Solar Decathlon: 2009 Solar Village Time-Lapse Images  

NLE Websites -- All DOE Office Websites (Extended Search)

that shows the houses lining Decathlete Way, which is filled with visitors. In the distance, numerous Washington, D.C., buildings are visible. that shows the houses lining Decathlete Way, which is filled with visitors. In the distance, numerous Washington, D.C., buildings are visible. A time-lapse camera mounted on the Smithsonian Castle captured the daily activity in the solar village from above during Solar Decathlon 2009. Solar Decathlon 2009 Solar Village Time-Lapse Images The U.S. Department of Energy Solar Decathlon 2009 time-lapse cameras provided real-time updates from the solar village throughout the event. Three videos were created from the time-lapse images captured by the cameras, which filmed 24 hours a day on the National Mall. Camera One Camera One was positioned in the middle of the solar village on the National Mall and faced east toward the U.S. Capitol. Camera Two Camera Two was positioned in the middle of the solar village on the

13

Joint inversion of AVA data for elastic parameters by bootstrapping  

Science Conference Proceedings (OSTI)

A joint inversion method is developed to estimate the elastic constants of two elastic, homogeneous, isotropic media separated by a flat horizontal boundary. The method jointly uses P and S-converted wave reflection amplitude-versus-angle (AVA) data ... Keywords: AVA, Bootstrapping, Elastic parameters, Joint inversion, Zoeppritz equations

Hülya Kurt

2007-03-01T23:59:59.000Z

14

The Inner Workings of a Bacterial Black Box Caught on Time-lapse Video  

NLE Websites -- All DOE Office Websites (Extended Search)

November 22, 2013 November 22, 2013 The Inner Workings of a Bacterial Black Box Caught on Time-lapse Video Cyanobacteria, found in just about every ecosystem on Earth, are one of the few bacteria that can create their own energy through photosynthesis and "fix" carbon - from carbon dioxide molecules - and convert it into fuel inside of miniscule compartments called carboxysomes. Using a pioneering visualization method, researchers from the University of California, Berkeley and the Department of Energy Joint Genome Institute (DOE JGI) made what are, in effect, movies of this complex and vital cellular machinery being assembled inside living cells. They observed that bacteria build these internal compartments in a way never seen in plant, animal and other eukaryotic cells.

15

Time-lapse electrical resistivity tomography applied to cave sustainability (Barbados) and groundwater exploration (Saint Lucia)  

E-Print Network (OSTI)

In this work we apply the method of two-dimensional time-lapse electrical resistivity tomography (2D time-lapse ERT) for two different problems. In the first problem, we monitor the structural stability of the roof of the ...

Agramakova, Yulia

2011-01-01T23:59:59.000Z

16

Removal of Last Remaining HEU from Vietnam - Time Lapse Video | National  

National Nuclear Security Administration (NNSA)

Removal of Last Remaining HEU from Vietnam - Time Lapse Video | National Removal of Last Remaining HEU from Vietnam - Time Lapse Video | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Video Gallery > Removal of Last Remaining HEU from Vietnam ... Removal of Last Remaining HEU from Vietnam - Time Lapse Video Removal of Last Remaining HEU from Vietnam - Time Lapse Video

17

Computational image analysis of subcellular dynamics in time-lapse fluorescence microscopy  

E-Print Network (OSTI)

The use of image segmentation and motion tracking algorithms was adapted for analyzing time-lapse data of cells with fluorescently labeled protein. Performance metrics were devised and algorithm parameters were matched to ...

Huang, Austin V., 1980-

2005-01-01T23:59:59.000Z

18

Inexpensive Time-Lapse Digital Cameras for Studying Transient Meteorological Phenomena: Dust Devils and Playa Flooding  

Science Conference Proceedings (OSTI)

The authors describe the design and performance of inexpensive and compact time-lapse cameras suitable for field deployment in remote locations for long periods and their application to studying two time-variable meteorological phenomena in arid ...

Ralph D. Lorenz; Brian Jackson; Jason W. Barnes

2010-01-01T23:59:59.000Z

19

The maximum time interval of time-lapse photography for monitoring construction operations  

E-Print Network (OSTI)

Many construction companies today utilize webcams on their jobsites to monitor and record construction operations. Jobsite monitoring is often limited to outdoor construction operations due to lack of mobility of wired webcams. A wireless webcam may help monitor indoor construction operations with enhanced mobility. The transfer time of sending a photograph from the wireless webcam, however, is slower than that of a wired webcam. It is expected that professionals may have to analyze indoor construction operations with longer interval time-lapse photographs if they want to use a wireless webcam. This research aimed to determine the maximum time interval for time-lapse photos that enables professionals to interpret construction operations and productivity. In order to accomplish the research goal, brickwork of five different construction sites was videotaped. Various interval time-lapse photographs were generated from each video. Worker?s activity in these photographs was examined and graded. The grades in one-second interval photographs were compared with the grades of the same in longer time interval photographs. Error rates in observing longer time-lapse photographs were then obtained and analyzed to find the maximum time interval of time-lapse photography for monitoring construction operations. Research has discovered that the observation error rate increased rapidly until the 60-second interval and its increasing ratio remained constant. This finding can be used to predict a reasonable amount of error rate when observing time-lapse photographs less than 60-second interval. The observation error rate with longer than 60-second interval did not show a constant trend. Thus, the 60-second interval could be considered as the maximum time interval for professionals to interpret construction operations and productivity.

Choi, Ji Won

2004-08-01T23:59:59.000Z

20

Time-lapse seismic modeling and production data assimilation for enhanced oil recovery and CO2 sequestration  

E-Print Network (OSTI)

Production from a hydrocarbon reservoir is typically supported by water or carbon dioxide (CO2) injection. CO2 injection into hydrocarbon reservoirs is also a promising solution for reducing environmental hazards from the release of green house gases into the earth’s atmosphere. Numerical simulators are used for designing and predicting the complex behavior of systems under such scenarios. Two key steps in such studies are forward modeling for performance prediction based on simulation studies using reservoir models and inverse modeling for updating reservoir models using the data collected from field. The viability of time-lapse seismic monitoring using an integrated modeling of fluid flow, including chemical reactions, and seismic response is examined. A comprehensive simulation of the gas injection process accounting for the phase behavior of CO2-reservoir fluids, the associated precipitation/dissolution reactions, and the accompanying changes in porosity and permeability is performed. The simulation results are then used to model the changes in seismic response with time. The general observation is that gas injection decreases bulk density and wave velocity of the host rock system. Another key topic covered in this work is the data assimilation study for hydrocarbon reservoirs using Ensemble Kalman Filter (EnKF). Some critical issues related to EnKF based history matching are explored, primarily for a large field with substantial production history. A novel and efficient approach based on spectral clustering to select ‘optimal’ initial ensemble members is proposed. Also, well-specific black-oil or compositional streamline trajectories are used for covariance localization. Approach is applied to the Weyburn field, a large carbonate reservoir in Canada. The approach for optimal member selection is found to be effective in reducing the ensemble size which was critical for this large-scale field application. Streamline-based covariance localization is shown to play a very important role by removing spurious covariances between any well and far-off cell permeabilities. Finally, time-lapse seismic study is done for the Weyburn field. Sensitivity of various bulk seismic parameters viz velocity and impedance is calculated with respect to different simulation parameters. Results show large correlation between porosity and seismic parameters. Bulk seismic parameters are sensitive to net overburden pressure at its low values. Time-lapse changes in pore-pressure lead to changes in bulk parameters like velocity and impedance.

Kumar, Ajitabh

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Properties of African Squall Lines Inferred from Time-Lapse Satellite Imagery  

Science Conference Proceedings (OSTI)

Analysis of 48 h of time-lapse satellite imagery of a family of squall lines in Africa links the phenomena with a characteristic cloud cluster and with a wind field perturbation which is enhanced in passing through an African easterly wave ...

Michael Fortune

1980-02-01T23:59:59.000Z

22

2D Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data...  

Open Energy Info (EERE)

D Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data In The Evaluation Of Low Enthalpy Geothermal Fields Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

23

Hybrid optimization for lithologic inversion and time-lapse monitoring using a binary formulation  

E-Print Network (OSTI)

problems (Green 1975; Last & Kubik 1983; Guillen & Menichetti 1984; Oldenburg et al. 1998). The interface

24

Tracking of cell population from time lapse and end point confocal microscopy images with multiple hypothesis Kalman smoothing filters  

E-Print Network (OSTI)

This paper describes an automated visual tracking system combining time-lapse and end-point confocal microscopy to aid the interpretations of cell behaviors and interactions, with the focus on understanding the sprouting ...

Ong, Lee-Ling S.

25

2D Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data In The  

Open Energy Info (EERE)

Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data In The Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data In The Evaluation Of Low Enthalpy Geothermal Fields Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 2D Joint Inversion Of DC And Scalar Audio-Magnetotelluric Data In The Evaluation Of Low Enthalpy Geothermal Fields Details Activities (0) Areas (0) Regions (0) Abstract: Audio-magnetotelluric (AMT) and resistivity (dc) surveys are often used in environmental, hydrological and geothermal evaluation. The separate interpretation of those geophysical data sets assuming two-dimensional models frequently produces ambiguous results. The joint inversion of AMT and dc data is advocated by several authors as an efficient method for reducing the ambiguity inherent to each of those

26

Estimation of in-situ petrophysical properties from wireline formation tester and induction logging measurements: A joint inversion approach  

E-Print Network (OSTI)

measurements: A joint inversion approach Faruk O. Alpak a, , Carlos Torres-Verdín a , Tarek M. Habashy b noise-free and noise-contaminated synthetic data. Joint inversion results provide a quantitative proof of measure- ments is jointly inverted to yield saturation-dependent functions. © 2008 Elsevier B.V. All

Torres-VerdĂ­n, Carlos

27

Time-lapse crosswell seismic and VSP monitoring of injected CO2 ina brine aquifer  

SciTech Connect

Seismic surveys successfully imaged a small scale C02injection (1,600 tons) conducted in a brine aquifer of the Frio Formationnear Houston, Texas. These time-lapse bore-hole seismic surveys,crosswell and vertical seismic profile (VSP), were acquired to monitorthe C02 distribution using two boreholes (the new injection well and apre-existing well used for monitoring) which are 30 m apart at a depth of1500 m. The crosswell survey provided a high-resolution image of the C02distribution between the wells via tomographic imaging of the P-wavevelocity decrease (up to 500 mls). The simultaneously acquired S-wavetomography showed little change in S-wave velocity, as expected for fluidsubstitution. A rock physics model was used to estimate C02 saturationsof 10-20 percent from the P-wave velocity change. The VSP survey resolveda large (-70 percent) change in reflection amplitude for the Friohorizon. This C02 induced reflection amplitude change allowed estimationof the C02 extent beyond the monitor well and on 3 azimuths. The VSPresult is compared with numerical modeling of C02 saturations and isseismically modeled using the velocity change estimated in the crosswellsurvey.

Daley, Thomas M.; Myer, Larry R.; Peterson, J.E.; Majer, E.L.; Hoversten,G.M.

2006-05-30T23:59:59.000Z

28

Carbon sequestration monitoring with acoustic double-difference waveform inversion: A case study on SACROC walkaway VSP data  

Science Conference Proceedings (OSTI)

Geological carbon sequestration involves large-scale injection of carbon dioxide into underground geologic formations and is considered as a potential approach for mitigating global warming. Changes in reservoir properties resulting from the CO{sub 2} injection and migration can be characterized using waveform inversions of time-lapse seismic data. The conventional approach for analysis using waveform tomography is to take the difference of the images obtained using baseline and subsequent time-lapse datasets that are inverted independently. By contrast, double-difference waveform inversion uses timelapse seismic datasets to jointly invert for reservoir changes. We apply this method to a field time-lapse walkaway VSP data set acquired in 2008 and 2009 for monitoring CO{sub 2} injection at an enhanced oil recovery field at SACROC, Texas. The double-difference waveform inversion gives a cleaner and more easily interpreted image of reservoir changes, as compared to that obtained with the conventional scheme. Our results from the applicatoin of acoustic double-difference waveform tomography shows some zones with decreased P-wave velocity within the reservoir due to CO{sub 2} injection and migration.

Huang, Lianjie [Los Alamos National Laboratory; Fehler, Michael [MIT; Malcolm, Alison [MIT; Yang, Di [MIT

2011-01-01T23:59:59.000Z

29

ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY  

Science Conference Proceedings (OSTI)

Highly industrialized areas pose challenges for surface electrical resistivity characterization due to metallic infrastructure. The infrastructure is typically more conductive than the desired targets and will mask the deeper subsurface information. These challenges may be minimized if steel-cased wells are used as long electrodes in the area near the target. We demonstrate a method of using long electrodes to electrically monitor a simulated leak from an underground storage tank with both synthetic examples and a field demonstration. The synthetic examples place a simple target of varying electrical properties beneath a very low resistivity layer. The layer is meant to replicate the effects of infrastructure. Both surface and long electrodes are tested on the synthetic domain. The leak demonstration for the field experiment is simulated by injecting a high conductivity fluid in a perforated well within the S tank farm at Hanford, and the resistivity measurements are made before and after the leak test. All data are processed in four dimensions, where a regularization procedure is applied in both the time and space domains. The synthetic test case shows that the long electrode ERM could detect relative changes in resistivity that are commensurate with the differing target properties. The surface electrodes, on the other hand, had a more difficult time matching the original target's footprint. The field results shows a lowered resistivity feature develop south of the injection site after cessation of the injections. The time lapsed regularization parameter has a strong influence on the differences in inverted resistivity between the pre and post injection datasets, but the interpretation of the target is consistent across all values of the parameter. The long electrode ERM method may provide a tool for near real-time monitoring of leaking underground storage tanks.

MYERS DA; RUCKER DF; FINK JB; LOKE MH

2009-12-16T23:59:59.000Z

30

Fast History Matching of Time-Lapse Seismic and Production-Data for High Resolution Models  

E-Print Network (OSTI)

Seismic data have been established as a valuable source of information for the construction of reservoir simulation models, most commonly for determination of the modeled geologic structure, and also for population of static petrophysical properties (e.g. porosity, permeability). More recently, the availability of repeated seismic surveys over the time scale of years (i.e., 4D seismic) has shown promising results for the qualitative determination of changes in fluid phase distributions and pressure required for determination of areas of bypassed oil, swept volumes and pressure maintenance mechanisms. Quantitatively, and currently the state of the art in reservoir model characterization, 4D seismic data have proven distinctively useful for the calibration of geologic spatial variability which ultimately contributes to the improvement of reservoir development and management strategies. Among the limited variety of techniques for the integration of dynamic seismic data into reservoir models, streamline-based techniques have been demonstrated as one of the more efficient approaches as a result of their analytical sensitivity formulations. Although streamline techniques have been used in the past to integrate time-lapse seismic attributes, the applications were limited to the simplified modeling scenarios of two-phase fluid flow and invariant streamline geometry throughout the production schedule. This research builds upon and advances existing approaches to streamline-based seismic data integration for the inclusion of both production and seismic data under varying field conditions. The proposed approach integrates data from reservoirs under active reservoir management and the corresponding simulation models can be constrained using highly detailed or realistic schedules. Fundamentally, a new derivation of seismic sensitivities is proposed that is able to represent a complex reservoir evolution between consecutive seismic surveys. The approach is further extended to manage compositional reservoir simulation with dissolution effects and gravity-convective-driven flows which, in particular, are typical of CO2 transport behavior following injection into deep saline aquifers. As a final component of this research, the benefits of dynamic data integration on the determination of swept and drained volumes by injection and production, respectively, are investigated. Several synthetic and field reservoir modeling scenarios are used for an extensive demonstration of the efficacy and practical feasibility of the proposed developments.

Rey Amaya, Alvaro

2011-08-01T23:59:59.000Z

31

Joint stochastic inversion of 3D pre-stack seismic data and well logs for high-resolution reservoir characterization and petrophysical modeling: application to deepwater hydrocarbon  

E-Print Network (OSTI)

Joint stochastic inversion of 3D pre-stack seismic data and well logs for high-resolution reservoir describes a novel algorithm for the joint stochastic inversion of well logs and multiple angle stacks, and M50, with M-40 being the reservoir with the highest hydrocarbon production. M-10 M-40 M-50 #12;Joint

Torres-VerdĂ­n, Carlos

32

Joint inversion of marine seismic AVA and CSEM data using statistical rock-physics models and Markov random fields: Stochastic inversion of AVA and CSEM data  

SciTech Connect

Joint inversion of seismic AVA and CSEM data requires rock-physics relationships to link seismic attributes to electrical properties. Ideally, we can connect them through reservoir parameters (e.g., porosity and water saturation) by developing physical-based models, such as Gassmann’s equations and Archie’s law, using nearby borehole logs. This could be difficult in the exploration stage because information available is typically insufficient for choosing suitable rock-physics models and for subsequently obtaining reliable estimates of the associated parameters. The use of improper rock-physics models and the inaccuracy of the estimates of model parameters may cause misleading inversion results. Conversely, it is easy to derive statistical relationships among seismic and electrical attributes and reservoir parameters from distant borehole logs. In this study, we develop a Bayesian model to jointly invert seismic AVA and CSEM data for reservoir parameter estimation using statistical rock-physics models; the spatial dependence of geophysical and reservoir parameters are carried out by lithotypes through Markov random fields. We apply the developed model to a synthetic case, which simulates a CO{sub 2} monitoring application. We derive statistical rock-physics relations from borehole logs at one location and estimate seismic P- and S-wave velocity ratio, acoustic impedance, density, electrical resistivity, lithotypes, porosity, and water saturation at three different locations by conditioning to seismic AVA and CSEM data. Comparison of the inversion results with their corresponding true values shows that the correlation-based statistical rock-physics models provide significant information for improving the joint inversion results.

Chen, J.; Hoversten, G.M.

2011-09-15T23:59:59.000Z

33

Application of Time-Lapse Seismic Monitoring for the Control and Optimization of CO2 Enhanced Oil Recovery Operations  

SciTech Connect

The ''Application of Time-Lapse Seismic Monitoring for the Control and Optimization of CO{sub 2} Enhanced Oil Recovery Operations'' project is investigating the potential for monitoring CO{sub 2} floods in carbonate reservoirs through the use of standard p-wave seismic data. This project will involve the use of 4D seismic (time lapse seismic) to try to observe the movement of the injected CO{sub 2} through the reservoir. The differences between certain seismic attributes, such as amplitude, will be used to detect and map the movement of CO{sub 2} within the reservoir. This technique has recently been shown to be effective in CO{sub 2} monitoring in EOR projects such as Weyborne. The project is being conducted in the Charlton 30/31 field in northern Michigan Basin which is a Silurian pinnacle reef that has completed its primary production. This field is now undergoing enhanced oil recovery using CO{sub 2}. The CO{sub 2} flood was initiated the end of 2005 when the injection of small amounts of CO{sub 2} begin in the A1 Carbonate. This injection was conducted for 2 months before being temporarily halted in order for pressure measurements to be conducted. The determination of the reservoir's porosity distribution is proving to be a significant portion of this project. In order to relate the differences observed between the seismic attributes seen on the multiple surveys and the actual location of the CO{sub 2}, a predictive reservoir simulation model had to be developed. From this model, an accurate determination of porosity within the carbonate reservoir must be obtained. For this certain seismic attributes have been investigated. The study reservoirs in the Charlton 30/31 field range from 50 to 400 acres in size. The relatively small area to image makes 3-D seismic data acquisition reasonably cost effective. Permeability and porosity vary considerably throughout the reef, thus it is essential to perform significant reservoir characterization and modeling prior to implementing a CO{sub 2} flood to maximize recovery efficiency. Should this project prove successful, the same technique could be applied across a large spectrum of the industry. In Michigan alone, the Niagaran reef play is comprised of over 700 Niagaran reefs with reservoirs already depleted by primary production. These reservoirs range in thickness from 200 to 400 ft and are at depths of 2000 to 5000 ft. Approximately 113 of these Niagaran oil fields have produced over 1 million bbls each and the total cumulative production is in excess of 300 million bbls and 1.4 Tcf. There could potentially be over 1 billion bbls of oil remaining in reefs in Michigan much of which could be mobilized utilizing techniques similar to those employed in this study.

Brian E. Toelle

2006-02-28T23:59:59.000Z

34

Joint inversion of P-and SV-wave traveltime error to esimate anisotropy: a CFP approach Robert J. Ferguson, Jackson School of Geosciences, Department of Geological Sciences, University of Texas  

E-Print Network (OSTI)

Joint inversion of P- and SV-wave traveltime error to esimate anisotropy: a CFP approach Robert J. For stability, joint inversion P- and SV-data is employed and, as pure SV-data are relatively rare, the use of mode-converted (PSV) data to represent SV in the joint inversion is suggested. Analytic and synthetic

Ferguson, Robert J.

35

Application of Time-Lapse Seismic Monitoring for the Control and Optimization of CO2 Enhanced Oil Recovery Operations  

SciTech Connect

This project, 'Application of Time-Lapse Seismic Monitoring for the Control and Optimization of CO{sub 2} Enhanced Oil Recovery Operations', investigated the potential for monitoring CO{sub 2} floods in carbonate reservoirs through the use of standard p-wave seismic data. This primarily involved the use of 4D seismic (time lapse seismic) in an attempt to observe and map the movement of the injected CO{sub 2} through a carbonate reservoir. The differences between certain seismic attributes, such as amplitude, were used for this purpose. This technique has recently been shown to be effective in CO{sub 2} monitoring in Enhanced Oil Recovery (EOR) projects, such as Weyborne. This study was conducted in the Charlton 30/31 field in the northern Michigan Basin, which is a Silurian pinnacle reef that completed its primary production in 1997 and was scheduled for enhanced oil recovery using injected CO{sub 2}. Prior to injection an initial 'Base' 3D survey was obtained over the field and was then processed and interpreted. CO{sub 2} injection within the main portion of the reef was conducted intermittently during 13 months starting in August 2005. During this time, 29,000 tons of CO{sub 2} was injected into the Guelph formation, historically known as the Niagaran Brown formation. By September 2006, the reservoir pressure within the reef had risen to approximately 2000 lbs and oil and water production from the one producing well within the field had increased significantly. The determination of the reservoir's porosity distribution, a critical aspect of reservoir characterization and simulation, proved to be a significant portion of this project. In order to relate the differences observed between the seismic attributes seen on the multiple 3D seismic surveys and the actual location of the CO{sub 2}, a predictive reservoir simulation model was developed based on seismic attributes obtained from the base 3D seismic survey and available well data. This simulation predicted that the CO{sub 2} injected into the reef would remain in the northern portion of the field. Two new wells, the State Charlton 4-30 and the Larsen 3-31, were drilled into the field in 2006 and 2008 respectively and supported this assessment. A second (or 'Monitor') 3D seismic survey was acquired during September 2007 over most of the field and duplicated the first (Base) survey, as much as possible. However, as the simulation and new well data available at that time indicated that the CO{sub 2} was concentrated in the northern portion of the field, the second seismic survey was not acquired over the extreme southern end of the area covered by the original (or Base) 3D survey. Basic processing was performed on the second 3D seismic survey and, finally, 4D processing methods were applied to both the Base and the Monitor surveys. In addition to this 3D data, a shear wave seismic data set was obtained at the same time. Interpretation of the 4D seismic data indicated that a significant amplitude change, not attributable to differences in acquisition or processing, existed at the locations within the reef predicted by the reservoir simulation. The reservoir simulation was based on the porosity distribution obtained from seismic attributes from the Base 3D survey. Using this validated reservoir simulation the location of oil within the reef at the time the Monitor survey was obtained and recommendations made for the drilling of additional EOR wells. The economic impact of this project has been estimated in terms of both enhanced oil recovery and CO{sub 2} sequestration potential. In the northern Michigan Basin alone, the Niagaran reef play is comprised of over 700 Niagaran reefs with reservoirs already depleted by primary production. Potentially there is over 1 billion bbls of oil (original oil in place minus primary recovery) remains in the reefs in Michigan, much of which could be more efficiently mobilized utilizing techniques similar to those employed in this study.

Brian Toelle

2008-11-30T23:59:59.000Z

36

Joint Inversion of Reservoir Production Measurements and 3D Pre-Stack Seismic Data: Proof Carlos Torres-Verdn, Zhan Wu, Omar J. Varela, Mrinal K. Sen, and Indrajit G. Roy.  

E-Print Network (OSTI)

Joint Inversion of Reservoir Production Measurements and 3D Pre-Stack Seismic Data: Proof for estimating three-dimensional (3D) reservoir parameters and initial fluid saturations jointly from pre good lateral and vertical control on lithology and fluid distributions. The proposed joint inversion

Torres-VerdĂ­n, Carlos

37

Initial Report on the Development of a Monte Carlo-Markov Chain Joint Inversion Approach for Geothermal Exploration  

DOE Green Energy (OSTI)

Geothermal exploration and subsequent characterization of potential resources typically employ a variety of geophysical, geologic and geochemical techniques. However, since the data collected by each technique provide information directly on only one or a very limited set of the many physical parameters that characterize a geothermal system, no single method can be used to describe the system in its entirety. Presently, the usual approach to analyzing disparate data streams for geothermal applications is to invert (or forward model) each data set separately and then combine or compare the resulting models, for the most part in a more or less ad hoc manner. However, while each inversion may yield a model that fits the individual data set, the models are usually inconsistent with each other to some degree. This reflects uncertainties arising from the inevitable fact that geophysical and other exploration data in general are to some extent noisy, incomplete, and of limited sensitivity and resolution, and so yield non-unique results. The purpose of the project described here is to integrate the different model constraints provided by disparate geophysical, geological and geochemical data in a rigorous and consistent manner by formal joint inversion. The objective is to improve the fidelity of exploration results and reservoir characterization, thus addressing the goal of the DOE Geothermal Program to improve success in exploration for economically viable resources by better defining drilling targets, reducing risk, and improving exploration/drilling success rates.

Foxall, W; Ramirez, A; Carlson, S; Dyer, K; Sun, Y

2007-04-25T23:59:59.000Z

38

Three distinct stages of apoptotic nuclear condensation revealed by time-lapse imaging, biochemical and electron microscopy analysis of cell-free apoptosis  

SciTech Connect

During apoptotic execution, chromatin undergoes a phase change from a heterogeneous, genetically active network to an inert highly condensed form that is fragmented and packaged into apoptotic bodies. We have previously used a cell-free system to examine the roles of caspases or other proteases in apoptotic chromatin condensation and nuclear disassembly. But so far, the role of DNase activity or ATP hydrolysis in this system has not yet been elucidated. Here, in order to better define the stages of nuclear disassembly in apoptosis, we have characterized the apoptotic condensation using a cell-free system and time-lapse imaging. We demonstrated that the population of nuclei undergoing apoptosis in vitro appears to follow a reproducible program of nuclear condensation, suggesting the existence of an ordered biochemical pathway. This enabled us to define three stages of apoptotic chromatin condensation: stage 1 ring condensation; stage 2 necklace condensation; and stage 3 nuclear collapse/disassembly. Electron microscopy revealed that neither chromatin nor detectable subnuclear structures were present inside the stage 1 ring-condensed structures. DNase activity was not essential for stage 1 ring condensation, which could occur in apoptotic extracts depleted of all detectable DNase activity. However, DNase(s) were required for stage 2 necklace condensation. Finally, we demonstrated that hydrolyzable ATP is required for stage 3 nuclear collapse/disassembly. This requirement for ATP hydrolysis further distinguished stage 2 from stage 3. Together, these experiments provide the first steps towards a systematic biochemical characterization of chromatin condensation during apoptosis.

Tone, Shigenobu [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan)], E-mail: tone@med.kawasaki-m.ac.jp; Sugimoto, Kenji [Laboratory of Applied Molecular Biology, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531 (Japan); Tanda, Kazue [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Suda, Taiji; Uehira, Kenzo [Electron Microscope Center, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Kanouchi, Hiroaki [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Samejima, Kumiko [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom); Minatogawa, Yohsuke [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Earnshaw, William C. [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom)], E-mail: Bill.Earnshaw@ed.ac.uk

2007-10-01T23:59:59.000Z

39

CX-007889: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

89: Categorical Exclusion Determination CX-007889: Categorical Exclusion Determination Time-lapse Joint Inversion of Geophysical Data and its Application to Geothermal Prospecting...

40

Validation of the BERT Point Source Inversion Scheme Using the Joint Urban 2003 Tracer Experiment Dataset - Final Report  

SciTech Connect

A terrorist attack in a U.S. city utilizing biological weapons could have severe consequences. A biological agent could be aerosolized and emitted into the air in the middle of a city, invisibly traveling with the winds, and dosing an unknowing populace. The magnitude of the problem would only be revealed as sick people started arriving several days later at hospitals with symptoms, many already too ill to be saved. A national program has deployed a network of biological agent collectors in U.S. cities to provide early detection of a bio-weapon attack, thereby hastening medical intervention and potentially saving many thousands of lives. In fact, the most effective treatment takes place prior to infection or in its early stages and early warning might reduce the disease progression and, consequently, the possibility of an outbreak. If a biological attack were to occur in a city, one or more collectors may register hits with specific dosages and the city would be alerted that an attack had taken place. This piece of information alone, however, would not be enough to determine how serious the attack was, i.e., how much biological agent was released into the air and where the bio-plume traveled. The first responders and public health communities will want to know what regions were impacted, how many persons might get sick, which people most need medical supplies, and where to clean up. The law enforcement community will want to look for forensic evidence at the release location. The Bio-Agent Event Reconstruction Tool (BERT) has been developed in order to recreate what might have happened during an airborne biological agent attack based on biological agent collector measurements and wind collectors mounted around a city. The tool can be used to estimate possible release areas while eliminating other areas, and can estimate bounds on the amount of material released. The tool can then be used to project forward from the possible source areas to estimate potential hazard zones. Due to a unique source inversion technique - called the upwind collector footprint approach - the tool runs fast and the source regions can be determined in a few minutes. In this report, we provide an overview of the BERT framework, followed by a description of the source inversion technique. The Joint URBAN 2003 field experiment held in Oklahoma City that was used to validate BERT is then described. Subsequent sections describe the metrics used for evaluation, the comparison of the experimental data and BERT output, and under what conditions the BERT tool succeeds and performs poorly. Results are aggregated in different ways (e.g., daytime vs. nighttime releases, 1 vs. 2 vs. 3 hit collectors) to determine if BERT shows any systematic errors. Finally, recommendations are given for how to improve the code and procedures for optimizing performance in operational mode.

Brambilla, Sara [Los Alamos National Laboratory; Brown, Michael J. [Los Alamos National Laboratory

2012-06-18T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Three-dimensional induced polarization data inversion for complex resistivity  

DOE Green Energy (OSTI)

The conductive and capacitive material properties of the subsurface can be quantified through the frequency-dependent complex resistivity. However, the routine three-dimensional (3D) interpretation of voluminous induced polarization (IP) data sets still poses a challenge due to large computational demands and solution nonuniqueness. We have developed a flexible methodology for 3D (spectral) IP data inversion. Our inversion algorithm is adapted from a frequency-domain electromagnetic (EM) inversion method primarily developed for large-scale hydrocarbon and geothermal energy exploration purposes. The method has proven to be efficient by implementing the nonlinear conjugate gradient method with hierarchical parallelism and by using an optimal finite-difference forward modeling mesh design scheme. The method allows for a large range of survey scales, providing a tool for both exploration and environmental applications. We experimented with an image focusing technique to improve the poor depth resolution of surface data sets with small survey spreads. The algorithm's underlying forward modeling operator properly accounts for EM coupling effects; thus, traditionally used EM coupling correction procedures are not needed. The methodology was applied to both synthetic and field data. We tested the benefit of directly inverting EM coupling contaminated data using a synthetic large-scale exploration data set. Afterward, we further tested the monitoring capability of our method by inverting time-lapse data from an environmental remediation experiment near Rifle, Colorado. Similar trends observed in both our solution and another 2D inversion were in accordance with previous findings about the IP effects due to subsurface microbial activity.

Commer, M.; Newman, G.A.; Williams, K.H.; Hubbard, S.S.

2011-03-15T23:59:59.000Z

42

Removal of Last Remaining HEU from Vietnam - Time Lapse Video...  

NLE Websites -- All DOE Office Websites (Extended Search)

(MOST) and the Russian Federation successfully removed 11 kilograms of highly enriched uranium (HEU) from the Dalat Nuclear Research Institute. This is the eleventh country...

43

Optimal experiment design for time-lapse traveltime tomography  

SciTech Connect

Geophysical monitoring techniques offer the only noninvasive approach capable of assessing both the spatial and temporal dynamics of subsurface fluid processes. Increasingly, permanent sensor arrays in boreholes and on the ocean floor are being deployed to improve the repeatability and increase the temporal sampling of monitoring surveys. Because permanent arrays require a large up-front capital investment and are difficult (or impossible) to re-configure once installed, a premium is placed on selecting a geometry capable of imaging the desired target at minimum cost. We present a simple approach to optimizing downhole sensor configurations for monitoring experiments making use of differential seismic traveltimes. In our case, we use a design quality metric based on the accuracy of tomographic reconstructions for a suite of imaging targets. By not requiring an explicit singular value decomposition of the forward operator, evaluation of this objective function scales to problems with a large number of unknowns. We also restrict the design problem by recasting the array geometry into a low dimensional form more suitable for optimization at a reasonable computational cost. We test two search algorithms on the design problem: the Nelder-Mead downhill simplex method and the Multilevel Coordinate Search algorithm. The algorithm is tested for four crosswell acquisition scenarios relevant to continuous seismic monitoring, a two parameter array optimization, several scenarios involving four parameter length/offset optimizations, and a comparison of optimal multi-source designs. In the last case, we also examine trade-offs between source sparsity and the quality of tomographic reconstructions. One general observation is that asymmetric array lengths improve localized image quality in crosswell experiments with a small number of sources and a large number of receivers. Preliminary results also suggest that high-quality differential images can be generated using only a small number of optimally positioned sources.

Ajo-Franklin, J.B.

2009-10-01T23:59:59.000Z

44

Joint popping  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint popping Name: danb Status: NA Age: NA Location: NA Country: NA Date: Around 1993 Question: Why do your joints pop? For example, when I am walking my ankle always makes a...

45

A budget of inversions  

Science Conference Proceedings (OSTI)

Two problems of inversion are considered. First are the inverses in a stand ard circle of curves based on two fixed points, i.e., Circles of Apollonius, Conic Sections and Ovals of Cassini; then the inverses of lines not passing through the center of ... Keywords: Circles of Apollonius, City block metric, Conies, Inversion, Ovals of Cassini

J. A. Nickel

1995-03-01T23:59:59.000Z

46

Ceramic joints  

DOE Patents (OSTI)

Butt joints between materials having different coefficients of thermal expansion are prepared having a reduced probability of failure of stress facture. This is accomplished by narrowing/tapering the material having the lower coefficient of thermal expansion in a direction away from the joint interface and not joining the narrow-tapered surface to the material having the higher coefficient of thermal expansion.

Miller, Bradley J. (Worcester, MA); Patten, Jr., Donald O. (Sterling, MA)

1991-01-01T23:59:59.000Z

47

Geophysical Prospecting, 2004, 52, 547557 Estimating the elastic parameters of anisotropic media using a joint  

E-Print Network (OSTI)

using a joint inversion of P-wave and SV-wave traveltime error R.J. Ferguson1 and M.K. Sen1,2 1, joint inversion of P and SV data is employed and, as pure SV data are relatively rare, the use of mode-converted (PSV) data to represent SV in the joint inversion is proposed. Analytic and synthetic examples are used

Ferguson, Robert J.

48

The inverse crime  

E-Print Network (OSTI)

The inverse crime occurs when the same (or very nearly the same) theoretical ingredients are employed to synthesize as well as to invert data in an inverse problem. This act has been qualified as trivial and therefore to be avoided by Colton and Kress.

Armand Wirgin

2004-01-28T23:59:59.000Z

49

Statistical Inference in Inverse Problems  

E-Print Network (OSTI)

Inverse problems have gained popularity in statistical research recently. This dissertation consists of two statistical inverse problems: a Bayesian approach to detection of small low emission sources on a large random background, and parameter estimation methods for partial differential equation (PDE) models. Source detection problem arises, for instance, in some homeland security applications. We address the problem of detecting presence and location of a small low emission source inside an object, when the background noise dominates. The goal is to reach the signal-to-noise ratio levels on the order of 10^-3. We develop a Bayesian approach to this problem in two-dimension. The method allows inference not only about the existence of the source, but also about its location. We derive Bayes factors for model selection and estimation of location based on Markov chain Monte Carlo simulation. A simulation study shows that with sufficiently high total emission level, our method can effectively locate the source. Differential equation (DE) models are widely used to model dynamic processes in many fields. The forward problem of solving equations for given parameters that define the DEs has been extensively studied in the past. However, the inverse problem of estimating parameters based on observed state variables is relatively sparse in the statistical literature, and this is especially the case for PDE models. We propose two joint modeling schemes to solve for constant parameters in PDEs: a parameter cascading method and a Bayesian treatment. In both methods, the unknown functions are expressed via basis function expansion. For the parameter cascading method, we develop the algorithm to estimate the parameters and derive a sandwich estimator of the covariance matrix. For the Bayesian method, we develop the joint model for data and the PDE, and describe how the Markov chain Monte Carlo technique is employed to make posterior inference. A straightforward two-stage method is to first fit the data and then to estimate parameters by the least square principle. The three approaches are illustrated using simulated examples and compared via simulation studies. Simulation results show that the proposed methods outperform the two-stage method.

Xun, Xiaolei

2012-05-01T23:59:59.000Z

50

Piecewise Potential Vorticity Inversion  

Science Conference Proceedings (OSTI)

The treatment of the potential vorticity (PV) distribution as a composite of individual perturbations is central to the diagnostic and conceptual utility of PV. Nonlinearity in the inversion operator for Ertel's potential vorticity renders ...

Christopher A. Davis

1992-08-01T23:59:59.000Z

51

The Magnetotelluric Inverse Problem  

E-Print Network (OSTI)

1572–1592. Banks, R. , 1969: Geomagnetic variations and theThe inverse problem in geomagnetic induction. Z. Geophys. ,sound inferences from geomagnetic sounding, doi:10.1016/j.

Medin, Ashley E

2008-01-01T23:59:59.000Z

52

The magnetotelluric inverse problem  

E-Print Network (OSTI)

1572–1592. Banks, R. , 1969: Geomagnetic variations and theThe inverse problem in geomagnetic induction. Z. Geophys. ,sound inferences from geomagnetic sounding, doi:10.1016/j.

Medin, Ashley E.

2008-01-01T23:59:59.000Z

53

Inverse Lighting for Photography  

E-Print Network (OSTI)

We introduce a technique for improving photographs using inverse lighting, a new process based on algorithms developed in computer graphics for computing the reflection of light in 3D space. From a photograph and a 3D surface model for the object pictured, inverse lighting estimates the directional distribution of the incident light. We then use this information to process the photograph digitally to alter the lighting on the object. Inverse lighting is a specific example of the general idea of inverse rendering. This refers to the practice of using the methods of computer graphics, which normally are used to render images from scene information, to infer scene information from images. Our system uses physically based rendering technology to construct a linear least squares system that we solve to find the lighting. As an application, the results are then used to simulate a change in the incident light in the photograph. An implementation is described that uses 3D models from a laser...

Stephen R. Marschner; Donald P. Greenberg

1997-01-01T23:59:59.000Z

54

Why perform time-lapse seismic monitoring? Is it to ver-ify the reservoir model? No! We should conduct time-lapse  

E-Print Network (OSTI)

, and that this implies that oil is being lost through the spill point, never to be recovered, even if that reservoir technologies, it has evolved into a test of petrophysics and reservoir models as well. The field of most, HORACIO ACEVEDO, JOSHUA I. HAATAJA, and ANASTASIA MINAEVA, Michigan Technological University, Houghton

55

Generalized Inverse Seesaws  

E-Print Network (OSTI)

The seesaw mechanism can be generalized to a Type-III variant and a quintuplet variant. We present two models that provide analogous generalizations of the inverse seesaw mechanism. The first model employs a fermion triplet F ~ (1,3,0) and requires no additional multiplets or parameters relative to the standard inverse seesaw. We argue that, from a bottom-up perspective, there appears to be no particular reason to preference the usual scenario over this variant. The second model employs a fermion quintuplet F ~ (1,5,0) and requires an additional scalar S ~ (1,4,1). We also show that minimal inverse seesaws with even larger fermionic representations are not expected to realize naturally small neutrino masses.

Law, Sandy S C

2013-01-01T23:59:59.000Z

56

Generalized Inverse Seesaws  

E-Print Network (OSTI)

The seesaw mechanism can be generalized to a Type-III variant and a quintuplet variant. We present two models that provide analogous generalizations of the inverse seesaw mechanism. The first model employs a fermion triplet F ~ (1,3,0) and requires no additional multiplets or parameters relative to the standard inverse seesaw. We argue that, from a bottom-up perspective, there appears to be no particular reason to preference the usual scenario over this variant. The second model employs a fermion quintuplet F ~ (1,5,0) and requires an additional scalar S ~ (1,4,1). We also show that minimal inverse seesaws with even larger fermionic representations are not expected to realize naturally small neutrino masses.

Sandy S. C. Law; Kristian L. McDonald

2013-03-20T23:59:59.000Z

57

WIPP - Joint Information Center  

NLE Websites -- All DOE Office Websites (Extended Search)

The Joint Information Center is located at 4021 National Parks Highway in Carlsbad, N.M. Joint Information Center In the unlikely event of an emergency, the WIPP Joint Information...

58

Why inverse document frequency?  

Science Conference Proceedings (OSTI)

Inverse Document Frequency (IDF) is a popular measure of a word's importance. The IDF invariably appears in a host of heuristic measures used in information retrieval. However, so far the IDF has itself been a heuristic. In this paper, we show IDF to ...

Kishore Papineni

2001-06-01T23:59:59.000Z

59

Joint Announcement | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Announcement Joint Announcement Joint Announcement More Documents & Publications Comparing the Impacts of the 2005 and 2008 Hurricanes on U.S. Energy Infrastructure -...

60

PNNL: About PNNL - Joint Appointments  

NLE Websites -- All DOE Office Websites (Extended Search)

Yong Wang WSUPNNL Joint Appointee Yong Wang Named Fellow of American Chemical Society. Read the Full Article Joint Appointments The Joint Appointment Program is one means of...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Large displacement spherical joint  

DOE Patents (OSTI)

A new class of spherical joints has a very large accessible full cone angle, a property which is beneficial for a wide range of applications. Despite the large cone angles, these joints move freely without singularities.

Bieg, Lothar F. (Albuquerque, NM); Benavides, Gilbert L. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

62

NREL: Computational Science - Inverse Design  

NLE Websites -- All DOE Office Websites (Extended Search)

Inverse Design Inverse Design The NREL Computational Science Center collaborates with the High Throughput and Inverse Band Structure (HT/IBS) Group within the Center for Inverse Design (CID) to research, design, and create materials with given target properties. The Center for Inverse Design is an Energy Frontier Research Center of the U.S. Department of Energy Office of Science. To address a crucial scientific grand challenge, the Center is pursuing a new approach to material science. Rather than using the conventional direct approach ("Given the structure, find the electronic properties"), we are using a "materials by inverse design" approach ("Given the desired property, find the structure"). Illustration of a blue arrow pointing to a graphic with three curved lines that represent an electronic structure and blue arrow pointing to a red and blue balls that represent an atomic configuration.

63

Inverse Fusion PCR Cloning  

E-Print Network (OSTI)

Inverse fusion PCR cloning (IFPC) is an easy, PCR based three-step cloning method that allows the seamless and directional insertion of PCR products into virtually all plasmids, this with a free choice of the insertion site. The PCR-derived inserts contain a vector-complementary 59-end that allows a fusion with the vector by an overlap extension PCR, and the resulting amplified insert-vector fusions are then circularized by ligation prior transformation. A minimal amount of starting material is needed and experimental steps are reduced. Untreated circular plasmid, or alternatively bacteria containing the plasmid, can be used as templates for the insertion, and clean-up of the insert fragment is not urgently required. The whole cloning procedure can be performed within a minimal hands-on time and results in the generation of hundreds to ten-thousands of positive colonies, with a minimal background.

Markus Spiliotis

2012-01-01T23:59:59.000Z

64

Coda-wave interferometry analysis of time-lapse VSP data for monitoring geological carbon sequestration  

E-Print Network (OSTI)

Monitoring Geological Carbon Sequestration Authors: RongmaoGeological Carbon Sequestration ABSTRACT Injection andmonitoring geological carbon sequestration. ACKNOWLEDGEMENTS

Zhou, R.

2010-01-01T23:59:59.000Z

65

Fracture Quality From Integrating Time-Lapse VSP and Microseismic Data  

E-Print Network (OSTI)

Tight gas reservoirs are problematic to produce, often requiring multiple stages of hydraulic fracturing in order to create connected pathways through which hydrocarbons may flow. In this paper, we propose a new methodology ...

House, Nancy J.

2007-01-01T23:59:59.000Z

66

P-WAVE TIME-LAPSE SEISMIC DATA INTERPRETATION AT RULISON FIELD, PICEANCE BASIN, COLORADO  

E-Print Network (OSTI)

of unconventional fossil energy sources such as oil shale and hydrates; clean coal technologies; third

67

An Undular Bore and Gravity Waves Illustrated by Dramatic Time-Lapse Photography  

Science Conference Proceedings (OSTI)

On 6 May 2007, an intense atmospheric undular bore moved over eastern Iowa. A “Webcam” in Tama, Iowa, captured dramatic images of the effects of the bore and associated gravity waves on cloud features, because its viewing angle was almost normal ...

Timothy A. Coleman; Kevin R. Knupp; Daryl E. Herzmann

2010-08-01T23:59:59.000Z

68

Microfluidics-integrated time-lapse imaging for analysis of cellular Dirk R. Albrecht,yza  

E-Print Network (OSTI)

. Cole and G. Sluder, J. Cell Biol., 1994, 127, 1301­1310. 29 Z. Yang, A. E. Kenny, D. A. Brito and C. L, B. Piqani, T. M. Eisenhaure, B. Luo, J. K. Grenier, A. E. Carpenter, S. Y. Foo, S. A. Stewart, B. R. Grenier, A. B. Castoreno, U. S. Eggert, D. E. Root, P. Golland and D. M. Sabatini, Proc. Natl. Acad. Sci

Bhatia, Sangeeta

69

INTEGRATION OF ROCK PHYSICS AND RESERVOIR SIMULATION FOR THE INTERPRETATION OF TIME-LAPSE  

E-Print Network (OSTI)

of International Programs .........................15 Office of Technology Transfer ............................15 to the Graduate School. Credits earned as a nondegree student may be transferred into the regular degree program

70

Feasibility of monitoring gas hydrate production with time-lapse VSP  

E-Print Network (OSTI)

We do not include the ice phase, since ice does not form ingas, liquid, ice or hydrate phases, existing individually orphase theory that considers the existence of two solids (grain and ice

Kowalsky, M.B.

2010-01-01T23:59:59.000Z

71

Inverse problem for Bremsstrahlung radiation  

SciTech Connect

For certain predominantly one-dimensional distribution functions, an analytic inversion has been found which yields the velocity distribution of superthermal electrons given their Bremsstrahlung radiation. 5 refs.

Voss, K.E.; Fisch, N.J.

1991-10-01T23:59:59.000Z

72

Weather and Joints  

NLE Websites -- All DOE Office Websites (Extended Search)

Humidity and air pressure changes, which accompany changes in weather, can sometimes be felt in the human body, some people are affected more than others. Arthritis in joints...

73

Do Box Inverse Models Work?  

Science Conference Proceedings (OSTI)

The performance of a box inverse model is tested using output from a near-eddy-resolving numerical model. Conservation equations are written in isopycnal layers for three properties: mass, heat, and salt anomaly. If the equations are free of ...

Peter C. McIntosh; Stephen R. Rintoul

1997-02-01T23:59:59.000Z

74

SciTech Connect: "smart grid"  

Office of Scientific and Technical Information (OSTI)

Entropy-Bayesian Inversion of Time-Lapse Tomographic GPR data for Monitoring Dielectric Permittivity and Soil Moisture Variations Citation Details In-Document Search Title:...

75

Articular human joint modelling  

Science Conference Proceedings (OSTI)

The work reported in this paper encapsulates the theories and algorithms developed to drive the core analysis modules of the software which has been developed to model a musculoskeletal structure of anatomic joints. Due to local bone surface and contact ... Keywords: 6DOF, Joint Modelling, Software, Tissue wrapping, bilateral, constraints, forced contact based articulation, unilateral

Ibrahim i. Esat; Neviman Ozada

2010-03-01T23:59:59.000Z

76

JOINT ELECTRICAL & COMPUTER ENGINEERING AND  

E-Print Network (OSTI)

JOINT ELECTRICAL & COMPUTER ENGINEERING AND PHYSICS COLLOQUIUM "Speckle Statistics, Coherence confirmation of the increase in the well- defined polarization state of the output radiation. In the joint

77

Joint Institutes | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Institutes SHARE Joint Institutes ORNL, in partnership with the Science Alliance of the University of Tennessee, Knoxville, has a number of cooperative ventures in science...

78

Multiphase inverse modeling: An Overview  

DOE Green Energy (OSTI)

Inverse modeling is a technique to derive model-related parameters from a variety of observations made on hydrogeologic systems, from small-scale laboratory experiments to field tests to long-term geothermal reservoir responses. If properly chosen, these observations contain information about the system behavior that is relevant to the performance of a geothermal field. Estimating model-related parameters and reducing their uncertainty is an important step in model development, because errors in the parameters constitute a major source of prediction errors. This paper contains an overview of inverse modeling applications using the ITOUGH2 code, demonstrating the possibilities and limitations of a formalized approach to the parameter estimation problem.

Finsterle, S.

1998-03-01T23:59:59.000Z

79

High pressure ceramic joint  

DOE Patents (OSTI)

Many recuperators have components which react to corrosive gases and are used in applications where the donor fluid includes highly corrosive gases. These recuperators have suffered reduced life, increased service or maintenance, and resulted in increased cost. The present joint when used with recuperators increases the use of ceramic components which do not react to highly corrosive gases. Thus, the present joint used with the present recuperator increases the life, reduces the service and maintenance, and reduces the increased cost associated with corrosive action of components used to manufacture recuperators. The present joint is comprised of a first ceramic member, a second ceramic member, a mechanical locking device having a groove defined in one of the first ceramic member and the second ceramic member. The joint and the mechanical locking device is further comprised of a refractory material disposed in the groove and contacting the first ceramic member and the second ceramic member. The present joint mechanically provides a high strength load bearing joint having good thermal cycling characteristics, good resistance to a corrosive environment and good steady state strength at elevated temperatures.

Ward, Michael E. (Poway, CA); Harkins, Bruce D. (San Diego, CA)

1993-01-01T23:59:59.000Z

80

High pressure ceramic joint  

DOE Patents (OSTI)

Many recuperators have components which react to corrosive gases and are used in applications where the donor fluid includes highly corrosive gases. These recuperators have suffered reduced life, increased service or maintenance, and resulted in increased cost. The present joint when used with recuperators increases the use of ceramic components which do not react to highly corrosive gases. Thus, the present joint used with the present recuperator increases the life, reduces the service and maintenance, and reduces the increased cost associated with corrosive action of components used to manufacture recuperators. The present joint is comprised of a first ceramic member, a second ceramic member, a mechanical locking device having a groove defined in one of the first ceramic member and the second ceramic member. The joint and the mechanical locking device is further comprised of a refractory material disposed in the groove and contacting the first ceramic member and the second ceramic member. The present joint mechanically provides a high strength load bearing joint having good thermal cycling characteristics, good resistance to a corrosive environment and good steady state strength at elevated temperatures. 4 figures.

Ward, M.E.; Harkins, B.D.

1993-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Inverse scattering problem with isobars  

SciTech Connect

The inverse scattering problem is solved for a covariant, isobar-dominated scattering amplitude (including inelasticity). Application is made to the ..pi..N P/sub 33/ channel, with the ..pi..N ..delta.. vertex function and isobar bare mass as results.

Londergan, J.T.; Moniz, E.J.

1977-08-01T23:59:59.000Z

82

Stress inversion using slip tendency  

Science Conference Proceedings (OSTI)

The in situ stress state is an important controlling factor for the slip behavior of faults and fractures in the earth's crust and hence for the productivity of faulted and fractured hydrocarbon reservoirs. Current methods for stress tensor estimation ... Keywords: Slip tendency, Stress inversion, Stress tensor, Structural geology

John M. McFarland; Alan P. Morris; David A. Ferrill

2012-04-01T23:59:59.000Z

83

Joint Theory Institute  

NLE Websites -- All DOE Office Websites (Extended Search)

Program General Info Program General Info Registration Info Directions to Argonne Dynamics of Symmetry Breaking A Workshop sponsored by the ANL/UChicago Joint Theory Institute April 13-17, 2009 Argonne National Laboratory, IL The Joint Theory Institute (JTI) is a multi-disciplinary research institution jointly supported at the University of Chicago and Argonne National Laboratory to enhance collaborative research between both institutions in the broad area of theory. This year JTI sponsors a workshop the aim of which is to explore the dynamics of symmetry breaking in a broad range of systems from nuclear physics to string theory, using theoretical insights such as Dyson-Schwinger equations formalism, gauge/gravity duality and lattice QCD. We will focus on systems which exhibit dynamical symmetry breaking and will cover topics essential for understanding nonperturbative QCD and physics of quark-gluon plasma.

84

Temperature Inversions in the Subarctic North Pacific  

Science Conference Proceedings (OSTI)

Hydrographic data from the World Ocean Database 2001 and Argo profiling floats were analyzed to study temperature inversions in the subarctic North Pacific Ocean. The frequency distribution of temperature inversions [F(t-inv)] at a resolution of ...

Hiromichi Ueno; Ichiro Yasuda

2005-12-01T23:59:59.000Z

85

The inversion algorithm for digital simulation  

Science Conference Proceedings (OSTI)

The inversion algorithm is an event-driven algorithm, whose performance rivals or exceeds that of levelized compiled code simulation, even at activity rates of 50% or more. The inversion algorithm has several unique features, the most remarkable of which ...

P. M. Maurer

2006-11-01T23:59:59.000Z

86

Generalized inversion and theory of agree  

E-Print Network (OSTI)

In this thesis I examine some of the fundamental questions surrounding inversion structures. I first provide an analysis of Locative Inversion. I show that the mixed A- and A- syntactic behavior of the fronted PP in English ...

Wu, Hsiao-hung Iris

2008-01-01T23:59:59.000Z

87

Numerical Transform Inversion Using Gaussian Quadrature  

Science Conference Proceedings (OSTI)

Numerical inversion of Laplace transforms is a powerful tool in computational probability. It greatly enhances the applicability of stochastic models in many fields. In this article we present a simple Laplace transform inversion algorithm that can compute ...

Peter Den Iseger

2006-01-01T23:59:59.000Z

88

Inverse Problems in Heat Transfer  

E-Print Network (OSTI)

This chapter presents a stochastic modeling and statistical inference approach to the solution of inverse problems in thermal transport systems. Of particular interest is the inverse heat conduction problem (IHCP) of estimating an unknown boundary heat flux in a conducting solid given temperature data within the domain. Even though deterministic sequential and whole time domain estimation methods have been applied with success over the years for the solution of such problems, we herein introduce stochastic approaches to representing and solving the IHCP. As most engineering systems and processes operate in an uncertain environment, it becomes increasingly important to address their analysis and inverse design in a stochastic manner using statistical data-driven prior and concurrent information on the system response. Recent advances in spectral stochastic modeling, computational Bayesian and spatial statistics enable complete and e#cient solution procedures to such problems. Two distinct approaches to the IHCP are presented in this chapter one based on spectral stochastic modeling and the other on Bayesian inference. Although these techniques are discussed in the context of the IHCP, the methodologies presented are general and applicable to design and estimation problems in other more complex problems in thermal transport systems including problems in the presence of convection, radiation and conduction. 1

Nicholas Zabaras

2004-01-01T23:59:59.000Z

89

Theoretical analysis of inverse weibull distribution  

Science Conference Proceedings (OSTI)

In this study we present the theoretical analysis of Inverse weibull distribution. This paper presents the flexibility of the Inverse weibull distribution that approaches to different distributions. Here we compare the relevant parameters such as shape, ... Keywords: graphically analysis, inverse weibull distribution, simulation analysis

M. Shuaib Khan; G. R. Pasha; Ahmed Hesham Pasha

2008-02-01T23:59:59.000Z

90

Weather and Joints  

NLE Websites -- All DOE Office Websites (Extended Search)

Weather and Joints Weather and Joints Name: Brittany Location: N/A Country: N/A Date: N/A Question: Why do people feel the weather changin in their joints? Is it just a superstition? Replies: People feel weather changes in their bodies because storm systems are accompanied by lower air pressure. When a storm system is approaching the barometric pressure or air pressure will drop. Inside the body is air pressure also. The pressure inside the body is approximately 15 lbs per square inch. Normal air pressure on the outside is approximately the same. When both numbers are equal most people don't feel anything. However, when the low pressure system approaches or the air pressure drops, the pressure on the inside of the body is greater than outside and that air on the inside tries to get out because air flows from high pressure to low pressure. This causes swelling and discomfort in some people's joints, especially in the elderly or people who have suffered injuries to those areas (those areas are weakened somewhat due to the injury and less resistant to the changes in pressure).

91

Three-Dimensional Inversion of Magnetotelluric Data on a PC,...  

Open Energy Info (EERE)

additional parameters solved in the inversion. Initial inversion results for the Coso data set qualitatively resemble previous models from 2-D inversion stitches and from massively...

92

JIBS | Joint Institute for Biological Sciences | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Institute for Biological Sciences SHARE Joint Institute for Biological Sciences The Joint Institute of ORNL and the University of Tennessee has a single mission: to enable...

93

Rolling contact orthopaedic joint design  

E-Print Network (OSTI)

Arthroplasty, the practice of rebuilding diseased biological joints using engineering materials, is often used to treat severe arthritis of the knee and hip. Prosthetic joints have been created in a "biomimetic" manner to ...

Slocum, Alexander Henry, Jr

2013-01-01T23:59:59.000Z

94

An Evaluation of the Carbon Sequestration Potential of the Cambro-Ordovician Strata of the Illinois and Michigan Basins: Part 1: Evaluation of Phase 2 CO{sub 2} Injection Testing in the Deep Saline Gunter Sandstone Reservoir (Cambro-Ordovician Knox Group), Marvin Blan No. 1 Hancock County, Kentucky Part 2: Time-lapse Three-Dimensional Vertical Seismic Profile (3D-VSP) of Sequestration Target Interval with Injected Fluids  

SciTech Connect

Part 1 of this report focuses on results of the western Kentucky carbon storage test, and provides a basis for evaluating injection and storage of supercritical CO{sub 2} in Cambro-Ordovician carbonate reservoirs throughout the U.S. Midcontinent. This test demonstrated that the Cambro- Ordovician Knox Group, including the Beekmantown Dolomite, Gunter Sandstone, and Copper Ridge Dolomite in stratigraphic succession from shallowest to deepest, had reservoir properties suitable for supercritical CO{sub 2} storage in a deep saline reservoir hosted in carbonate rocks, and that strata with properties sufficient for long-term confinement of supercritical CO{sub 2} were present in the deep subsurface. Injection testing with brine and CO{sub 2} was completed in two phases. The first phase, a joint project by the Kentucky Geological Survey and the Western Kentucky Carbon Storage Foundation, drilled the Marvin Blan No. 1 carbon storage research well and tested the entire Knox Group section in the open borehole � including the Beekmantown Dolomite, Gunter Sandstone, and Copper Ridge Dolomite � at 1152�2255 m, below casing cemented at 1116 m. During Phase 1 injection testing, most of the 297 tonnes of supercritical CO{sub 2} was displaced into porous and permeable sections of the lowermost Beekmantown below 1463 m and Gunter. The wellbore was then temporarily abandoned with a retrievable bridge plug in casing at 1105 m and two downhole pressure-temperature monitoring gauges below the bridge plug pending subsequent testing. Pressure and temperature data were recorded every minute for slightly more than a year, providing a unique record of subsurface reservoir conditions in the Knox. In contrast, Phase 2 testing, this study, tested a mechanically-isolated dolomitic-sandstone interval in the Gunter. Operations in the Phase 2 testing program commenced with retrieval of the bridge plug and long-term pressure gauges, followed by mechanical isolation of the Gunter by plugging the wellbore with cement below the injection zone at 1605.7 m, then cementing a section of a 14-cm casing at 1470.4�1535.6. The resultant 70.1-m test interval at 1535.6�1605.7 m included nearly all of the Gunter sandstone facies. During the Phase 2 injection, 333 tonnes of CO{sub 2} were injected into the thick, lower sand section in the sandy member of the Gunter. Following the completion of testing, the injection zone below casing at 1116 m in the Marvin Blan No. 1 well, and wellbore below 305 m was permanently abandoned with cement plugs and the wellsite reclaimed. The range of most-likely storage capacities found in the Knox in the Marvin Blan No. 1 is 1000 tonnes per surface hectare in the Phase 2 Gunter interval to 8685 tonnes per surface hectare if the entire Knox section were available including the fractured interval near the base of the Copper Ridge. By itself the Gunter lacks sufficient reservoir volume to be considered for CO{sub 2} storage, although it may provide up to 18% of the reservoir volume available in the Knox. Regional extrapolation of CO{sub 2} storage potential based on the results of a single well test can be problematic, although indirect evidence of porosity and permeability can be demonstrated in the form of active saltwater-disposal wells injecting into the Knox. The western Kentucky region suitable for CO{sub 2} storage in the Knox is limited updip, to the east and south, by the depth at which the base of the Maquoketa shale lies above the depth required to ensure storage of CO{sub 2} in its supercritical state and the deepest a commercial well might be drilled for CO{sub 2} storage. The resulting prospective region has an area of approximately 15,600 km{sup 2}, beyond which it is unlikely that suitable Knox reservoirs may be developed. Faults in the subsurface, which serve as conduits for CO{sub 2} migration and compromise sealing strata, may mitigate the area with Knox reservoirs suitable for CO{sub 2} storage. The results of the injection tes

Richard Bowersox; John Hickman; Hannes Leetaru

2012-12-01T23:59:59.000Z

95

Double slotted socket spherical joint  

DOE Patents (OSTI)

A new class of spherical joints is disclosed. These spherical joints are capable of extremely large angular displacements (full cone angles in excess of 270.degree.), while exhibiting no singularities or dead spots in their range of motion. These joints can improve or simplify a wide range of mechanical devices.

Bieg, Lothar F. (Albuquerque, NM); Benavides, Gilbert L. (Albuquerque, NM)

2001-05-22T23:59:59.000Z

96

Laser Extinction in Laminar Inverse Diffusion Flames  

E-Print Network (OSTI)

Diagnostics, Chapter 9: Laser-Induced Incandescence,Laser Extinction in Laminar Inverse Diffusion Flames WesternFoundation, Arlington, VA Laser Extinction in Laminar

Macko, Kevin; Mikofski, Mark A; Fernandez-Pello, Carlos; Blevins, Linda G; Davis, Ronald W.

2005-01-01T23:59:59.000Z

97

Jet Joint Undertaking  

E-Print Network (OSTI)

Recent experience with the use of tritium fuel in the Tokamak Fusion Test Reactor and the Joint European Torus, together with progress in developing the technical design of the International Thermonuclear Experimental Reactor has expanded the technical knowledge base for tritium issues in fusion. This paper reports on an IEA workshop that brought together scientists and engineers to share experience and expertise on all fusion related tritium issues. Extensive discussion periods were devoted to exploring outstanding issues and identifying potential R&D avenues to address them. This paper summarizes the presentations, discussions and recommendations.

C H Skinner; C Gentile; J Hosea; D Mueller; P Coad; Abingdon Ox Ea; G Federici; Garching Germany; R Haange

1998-01-01T23:59:59.000Z

98

Metal to ceramic sealed joint  

DOE Patents (OSTI)

A metal to ceramic sealed joint which can withstand wide variations in temperature and maintain a good seal is provided for use in a device adapted to withstand thermal cycling from about 20 to about 1000 degrees C. The sealed joint includes a metal member, a ceramic member having an end portion, and an active metal braze forming a joint to seal the metal member to the ceramic member. The joint is positioned remote from the end portion of the ceramic member to avoid stresses at the ends or edges of the ceramic member. The sealed joint is particularly suited for use to form sealed metal to ceramic joints in a thermoelectric generator such as a sodium heat engine where a solid ceramic electrolyte is joined to metal parts in the system.

Lasecki, John V. (Livonia, MI); Novak, Robert F. (Farmington Hills, MI); McBride, James R. (Ypsilanti, MI)

1991-01-01T23:59:59.000Z

99

Metal to ceramic sealed joint  

DOE Patents (OSTI)

A metal to ceramic sealed joint which can withstand wide variations in temperature and maintain a good seal is provided for use in a device adapted to withstand thermal cycling from about 20 to about 1000 degrees C. The sealed joint includes a metal member, a ceramic member having an end portion, and an active metal braze forming a joint to seal the metal member to the ceramic member. The joint is positioned remote from the end portion of the ceramic member to avoid stresses at the ends or edges of the ceramic member. The sealed joint is particularly suited for use to form sealed metal to ceramic joints in a thermoelectric generator such as a sodium heat engine where a solid ceramic electrolyte is joined to metal parts in the system. 11 figures.

Lasecki, J.V.; Novak, R.F.; McBride, J.R.

1991-08-27T23:59:59.000Z

100

Jointly Sponsored Research Program  

DOE Green Energy (OSTI)

U.S. Department of Energy (DOE) Cooperative Agreement DE-FC26-98FT40321 funded through the Office of Fossil Energy and administered at the National Energy Technology Laboratory (NETL) supported the performance of a Jointly Sponsored Research Program (JSRP) at the Energy & Environmental Research Center (EERC) with a minimum 50% nonfederal cost share to assist industry in commercializing and effectively applying highly efficient, nonpolluting energy systems that meet the nation's requirements for clean fuels, chemicals, and electricity in the 21st century. The EERC in partnership with its nonfederal partners jointly performed 131 JSRP projects for which the total DOE cost share was $22,716,634 (38%) and the nonfederal share was $36,776,573 (62%). Summaries of these projects are presented in this report for six program areas: (1) resource characterization and waste management, (2) air quality assessment and control, (3) advanced power systems, (4) advanced fuel forms, (5) value-added coproducts, and (6) advanced materials. The work performed under this agreement addressed DOE goals for reductions in CO{sub 2} emissions through efficiency, capture, and sequestration; near-zero emissions from highly efficient coal-fired power plants; environmental control capabilities for SO{sub 2}, NO{sub x}, fine respirable particulate (PM{sub 2.5}), and mercury; alternative transportation fuels including liquid synfuels and hydrogen; and synergistic integration of fossil and renewable resources.

Everett A. Sondreal; John G. Hendrikson; Thomas A. Erickson

2009-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

JOINT OFFICER MANAGEMENT PROGRAM PROCEDURES  

E-Print Network (OSTI)

implementation of the DOD Joint Officer Management (JOM) and Joint Qualification System (JQS) per references a through c. Reference a delegates the authority to the Chairman of the Joint Chiefs of Staff to establish and publish regulations and procedures to ensure compliance with the statutory and Department policy standards for DOD’s JOM program. 2. Cancellation. CJCSI 1330.02C, 24 February 2006, is cancelled. Required review of promotion selection board results policy guidance has been incorporated in this instruction.

References See Enclosure N; Responsibilities For

2008-01-01T23:59:59.000Z

102

HLYWD: a program for post-processing data files to generate selected plots or time-lapse graphics  

SciTech Connect

The program HLYWD is a post-processor of output files generated by large plasma simulation computations or of data files containing a time sequence of plasma diagnostics. It is intended to be used in a production mode for either type of application; i.e., it allows one to generate along with the graphics sequence, segments containing title, credits to those who performed the work, text to describe the graphics, and acknowledgement of funding agency. The current version is designed to generate 3D plots and allows one to select type of display (linear or semi-log scales), choice of normalization of function values for display purposes, viewing perspective, and an option to allow continuous rotations of surfaces. This program was developed with the intention of being relatively easy to use, reasonably flexible, and requiring a minimum investment of the user's time. It uses the TV80 library of graphics software and ORDERLIB system software on the CDC 7600 at the National Magnetic Fusion Energy Computing Center at Lawrence Livermore Laboratory in California.

Munro, J.K. Jr.

1980-05-01T23:59:59.000Z

103

Time-lapse gravity monitoring: A systematic 4D approach with application to aquifer storage and recovery  

E-Print Network (OSTI)

microgravity method for waterflood surveillance: 2 -- Gravity measure- ments for the Prudhoe Bay reservoir

104

Structural fabric of the Palisades Monocline: a study of positive inversion, Grand Canyon, Arizona  

E-Print Network (OSTI)

A field study of positive inversion is conducted to describe associated structural fabrics and to infer kinematic development of the Palisades Monocline, Grand Canyon, Arizona. These features are then compared to sand, clay and solid rock models of positive inversion to test model results and improve understanding of inversion processes. The N40W 90 oriented Palisades fault underlying the monocline has experienced northeast-southwest Precambrian extension and subsequent northeastsouthwest Laramide contraction. The magnitude of inversion is estimated to be 25% based on vertical offset across the fault, although this does not account for flexure or horizontal shortening. The preferred N50W 90 joint and vein orientation and N50W 68 NE and SW conjugate normal faults are consistent with the Palisades fault and northeastsouthwest extension. The N45E 90 joint orientation and approximately N40W 28 NE and SW conjugate thrust faults are consistent with northeast-southwest contraction. The deformation is characterized by three domains across the fault zone: 1) the hanging wall, 2) the footwall, and 3) an interior, fault-bounded zone between the hanging wall and footwall. Extensional features are preserved and dominate the hanging wall, contractional features define footwall deformation, and the interior, fault-bounded zone is marked by the co-existence of extensional and contractional features. Extension caused a master normal fault and hanging wall roll-over with distributed joints, veinsand normal faults. During inversion, contraction induced reverse reactivation of existing hanging wall faults, footwall folding and footwall thrust-faulting. Precambrian normal slip along the master normal fault and subsequent Laramide reverse slip along the new footwall bounding fault created an uplifted domain of relatively oldest strata between the hanging wall and footwall. Physical models of co-axial inversion suggest consistent development of the three domains of deformation described at the Palisades fault, however the models often require magnitudes of inversion greater than 50%. Although vertical block motion during horizontal compression is not predicted directly by the Mohr-Coulomb criterion, physical models and analytical solutions (incorporating Mohr- Coulomb criterion) suggest maximum stress trajectories and near vertical failure above high angle basement faults that compare favorably with the Palisades fault zone.

Orofino, James Cory

2006-05-01T23:59:59.000Z

105

Approximation of Bayesian Inverse Problems for PDEs  

Science Conference Proceedings (OSTI)

Inverse problems are often ill posed, with solutions that depend sensitively on data. In any numerical approach to the solution of such problems, regularization of some form is needed to counteract the resulting instability. This paper is based on an ... Keywords: Bayesian, Markov chain-Monte Carlo, Stokes flow, data assimilation, inverse problem

S. L. Cotter; M. Dashti; A. M. Stuart

2010-04-01T23:59:59.000Z

106

Department of Mathematics Analysis Inverse Problems  

E-Print Network (OSTI)

McLaughlin In this talk we report the application of level-set techniques for reservoir facies for data inversion in reservoir modeling, Inverse Problems, 25 (2009), 035006. [4] M. A. Iglesias and D. McLaughlin.40­14.05 Anastasia Cornelio (Modena, Italy) Regularized Nonlinear Least Squares Methods for Hit Position

Hofmann, Bernd

107

Positive and inverse isotope effect on superconductivity  

E-Print Network (OSTI)

This article improves the BCS theory to include the inverse isotope effect on superconductivity. An affective model can be deduced from the model including electron-phonon interactions, and the phonon-induced attraction is simply and clearly explained on the electron Green function. The focus of this work is on how the positive or inverse isotope effect occurs in superconductors.

Tian De Cao

2009-09-04T23:59:59.000Z

108

CRUCIFORM CONTROL ROD JOINT  

DOE Patents (OSTI)

An invention is described which relates to nuclear reactor control rod components and more particularly to a joint between cruciform control rod members and cruciform control rod follower members. In one embodiment this invention provides interfitting crossed arms at adjacent ends of a control rod and its follower in abutting relation. This holds the members against relative opposite longitudinal movement while a compression member keys the arms against relative opposite rotation around a common axis. Means are also provided for centering the control rod and its follower on a common axis and for selectively releasing the control rod from its follower for the insertion of a replacement of the control rod and reuse of the follower. (AEC)

Thorp, A.G. II

1962-08-01T23:59:59.000Z

109

Inverse modeling of CO2 sources and sinks using satellite observations of CO2 from TES and surface flask measurements  

SciTech Connect

We infer CO2 surface fluxes using satellite observations of mid-tropospheric CO2 from the Tropospheric Emission Spectrometer (TES) and measurements of CO2 from surface flasks in a time-independent inversion analysis based on the GEOS-Chem model. Using TES CO2 observations over oceans, spanning 40 S 40 N, we find that the horizontal and vertical coverage of the TES and flask data are complementary. This complementarity is demonstrated by combining the datasets in a joint inversion, which provides better constraints than from either dataset alone, when a posteriori CO2 distributions are evaluated against independent ship and aircraft CO2 data. In particular, the joint inversion offers improved constraints in the tropics where surface measurements are sparse, such as the tropical forests of South America. Aggregating the annual surface-to-atmosphere fluxes from the joint inversion for the year 2006 yields 1.13 0.21 PgC for the global ocean, 2.77 0.20 PgC for the global land biosphere and 3.90 0.29 PgC for the total global natural flux (defined as the sum of all biospheric, oceanic, and biomass burning contributions but excluding CO2 emissions from fossil fuel combustion). These global ocean and global land fluxes are shown to be near the median of the broad range of values from other inversion results for 2006. To achieve these results, a bias in TES CO2 in the Southern Hemisphere was assessed and corrected using aircraft flask data, and we demonstrate that our results have low sensitivity to variations in the bias correction approach. Overall, this analysis suggests that future carbon data assimilation systems can benefit by integrating in situ and satellite observations of CO2 and that the vertical information provided by satellite observations of mid-tropospheric CO2 combined with measurements of surface CO2, provides an important additional constraint for flux inversions.

Nassar, Ray [University of Toronto; Jones, DBA [University of Toronto; Kulawik, SS [Jet Propulsion Laboratory, Pasadena, CA; Worden, JR [Jet Propulsion Laboratory, Pasadena, CA; Bowman, K [Jet Propulsion Laboratory, Pasadena, CA; Andres, Robert Joseph [ORNL; Suntharalingam, P [University of East Anglia, Norwich, United Kingdom; Chen, j. [University of Toronto; Brenninkmeijer, CAM [Max Planck Institut fur Chemie, Mainz; Schuck, TJ [Max Planck Institut fur Chemie, Mainz; Conway, T.J. [NOAA, Boulder, CO; Worthy, DE [Environment Canada

2011-01-01T23:59:59.000Z

110

Inverse Raman effect: applications and detection techniques  

SciTech Connect

The processes underlying the inverse Raman effect are qualitatively described by comparing it to the more familiar phenomena of conventional and stimulated Raman scattering. An experession is derived for the inverse Raman absorption coefficient, and its relationship to the stimulated Raman gain is obtained. The power requirements of the two fields are examined qualitatively and quantitatively. The assumption that the inverse Raman absorption coefficient is constant over the interaction length is examined. Advantages of the technique are discussed and a brief survey of reported studies is presented.

Hughes, L.J. Jr.

1980-08-01T23:59:59.000Z

111

Inverse hyperbolic problems and optical black holes  

E-Print Network (OSTI)

In this paper we give a more geometrical formulation of the main theorem in [E1] on the inverse problem for the second order hyperbolic equation of general form with coefficients independent of the time variable. We apply this theorem to the inverse problem for the equation of the propagation of light in a moving medium (the Gordon equation). Then we study the existence of black and white holes for the general hyperbolic and for the Gordon equation and we discuss the impact of this phenomenon on the inverse problems.

Gregory Eskin

2008-09-23T23:59:59.000Z

112

Inversion-free, noiseless Raman echoes  

E-Print Network (OSTI)

Using double optical Raman rephasing, an inversion-free resonant Raman echo is studied in an inhomogeneously broadened spin ensemble of a solid medium, where the Raman optical field-excited spin coherence has a frozen propagation vector. Unlike photon echoes whose quantum memory application is strictly limited due to \\pi rephasing pulse-induced population inversion causing quantum noises, the optical Raman field-excited spin echo is inherently silent owing to the frozen propagation vector. Thus, the doubly rephased Raman echo can be directly applied for quantum interface in a population inversion-free environment.

Byoung S. Ham

2011-11-20T23:59:59.000Z

113

2014 Joint Action Workshop | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2014 Joint Action Workshop 2014 Joint Action Workshop January 12, 2014 8:00AM EST to January 14, 2014 5:00PM EST Palm Desert, California The Joint Action Workshop is an annual...

114

Geophys. J. Int. (2000) 142, 000000 Nonlinear Bayesian joint inversion of seismic reflection  

E-Print Network (OSTI)

: Measurements in coaxial transmission lines, Water Resour. Res., 16, 574­582, 1980. van Genuchten, M. T conductivity was reported for the site (a standard deviation of 647 cm/d around a mean of 533 cm of clear acrylic plastic and sealed with rubber o-rings and lining. Prior to use, one side of the tank

Ursin, Bjørn

115

Joint inversion of geophysical and hydrological data for improved subsurface characterization  

E-Print Network (OSTI)

Department of Energy (DOE) Hanford site in Washington aslocations at the U.S. DOE Hanford 200 East site (Sisson andduring water injection at Hanford site include (a) water

Kowalsky, Michael B.; Chen, Jinsong; Hubbard, Susan S.

2006-01-01T23:59:59.000Z

116

The distribution of inversion lengths in bacteria  

Science Conference Proceedings (OSTI)

The distribution of the lengths of genomic segments inverted during the evolutionary divergence of two species cannot be inferred directly from the output of genome rearrangement algorithms, due to the rapid loss of signal from all but the shortest inversions. ...

David Sankoff; Jean-François Lefebvre; Elisabeth Tillier; Adrian Maler; Nadia El-Mabrouk

2004-10-01T23:59:59.000Z

117

Instrumentation and algorithms for electrostatic inverse problems  

E-Print Network (OSTI)

This thesis describes tracking objects with low-level electric fields. A physical model is presented that describes the important interactions and the required mathematical inversions. Sophisticated hardware used to perform ...

Strachan, John Paul, 1978-

2001-01-01T23:59:59.000Z

118

Efficient Inverse Modeling of Barotropic Ocean Tides  

Science Conference Proceedings (OSTI)

A computationally efficient relocatable system for generalized inverse (GI) modeling of barotropic ocean tides is described. The GI penalty functional is minimized using a representer method, which requires repeated solution of the forward and ...

Gary D. Egbert; Svetlana Y. Erofeeva

2002-02-01T23:59:59.000Z

119

Potential Vorticity Inversion on a Hemisphere  

Science Conference Proceedings (OSTI)

Several different kinds of accurate potential vorticity (PV) inversion operators, and the associated balanced models, are tested for the shallow water equations on a hemisphere in an attempt to approach the ultimate limitations of the balance, ...

Michael E. McIntyre; Warwick A. Norton

2000-05-01T23:59:59.000Z

120

Washington Joint Aquatic Resources Permit Application (JARPA...  

Open Energy Info (EERE)

Washington Joint Aquatic Resources Permit Application (JARPA) Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- OtherOther: Washington Joint...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Joint SSRTNet/ALS-MES Workshop report  

E-Print Network (OSTI)

conclusion of his SRRTNet/ALS-MES Workshop presentation inJoint SSRTNet/ALS-MES Workshop This joint workshop broughtthe Advanced Light Source (ALS) Users’ Association Annual

Shuh, David; Van Hove, Michel

2001-01-01T23:59:59.000Z

122

A fluorophosphate-based inverse Keggin structure  

SciTech Connect

An unusual PFO(3)(2-)-templated "inverse Keggin" polyanion, [Mo(12)O(46)(PF)(4)](4-), has been isolated from the degradation reaction of an {Mo(132)}-type Keplerate to [PMo(12)O(40)](3-) by [Cu(MeCN)(4)](PF(6)) in acetonitrile. (31)P-NMR studies suggest a structure-directing role for [Cu(MeCN)(4)](+) in the formation of the highly unusual all-inorganic inverse Keggin structure.

Fielden, John; Quasdorf, Kyle; Cronin, Leroy; Kogerler, Paul

2012-07-17T23:59:59.000Z

123

Iterative inverse kinematics with manipulator configuration control  

Science Conference Proceedings (OSTI)

A new method, termed the offset modification method (OM method), for solving the manipulator inverse kinematics problem is presented. The OM method works by modifying the link offset values of a manipulator until it is possible to derive closed-form inverse kinematics equations for the resulting manipulator (termed the model manipulator). This procedure allows one to derive a set of three nonlinear equations in three unknowns that, when numerically solved, give an inverse kinematics solution for the original manipulator. The OM method can be applied to manipulators with any number of degrees of freedom, as long as the manipulator satisfies a given set of conditions (Theorem 1). The OM method is tested on a 6-degree-of-freedom manipulator that has no known closed-form inverse kinematics equations. It is shown that the OM method is applicable to real-time manipulator control, can be used to guarantee convergence to a desired endpoint position and orientation (if it exists), and allows one to directly choose which inverse kinematics solution the algorithm will converge to (as specified in the model manipulator closed-form inverse kinematics equations). Applications of the method to other 6-DOF manipulator geometries and to redundant manipulators (i.e. greater than 6 DOF geometries) are discussed.

Grudic, G.Z.; Lawrence, P.D. [Univ. of British Columbia, Vancouver, British Columbia (Canada). Dept. of Electrical Engineering] [Univ. of British Columbia, Vancouver, British Columbia (Canada). Dept. of Electrical Engineering

1993-08-01T23:59:59.000Z

124

Joint probabilities and quantum cognition  

E-Print Network (OSTI)

In this paper we discuss the existence of joint probability distributions for quantum-like response computations in the brain. We do so by focusing on a contextual neural-oscillator model shown to reproduce the main features of behavioral stimulus-response theory. We then exhibit a simple example of contextual random variables not having a joint probability distribution, and describe how such variables can be obtained from neural oscillators, but not from a quantum observable algebra.

J. Acacio de Barros

2012-06-26T23:59:59.000Z

125

Joint probabilities and quantum cognition  

SciTech Connect

In this paper we discuss the existence of joint probability distributions for quantumlike response computations in the brain. We do so by focusing on a contextual neural-oscillator model shown to reproduce the main features of behavioral stimulus-response theory. We then exhibit a simple example of contextual random variables not having a joint probability distribution, and describe how such variables can be obtained from neural oscillators, but not from a quantum observable algebra.

Acacio de Barros, J. [Liberal Studies, 1600 Holloway Ave., San Francisco State University, San Francisco, CA 94132 (United States)

2012-12-18T23:59:59.000Z

126

APPOINTMENT OF A JOINT MEMBER New Appointment  

E-Print Network (OSTI)

APPOINTMENT OF A JOINT MEMBER Renewal: New Appointment: "A joint appointment reflects the active with an academic appointment in one academic unit may be given a joint appointment in another academic unit. ..." [Article 13.10.1] In the case of a new hire, where the intention is a Joint Appointment, there needs

Saskatchewan, University of

127

Work-efficient matrix inversion in polylogarithmic time  

Science Conference Proceedings (OSTI)

We present an algorithm for matrix inversion that combines the practical requirement of an optimal number of arithmetic operations and the theoretical goal of a polylogarithmic critical path length. The algorithm reduces inversion to matrix multiplication. ... Keywords: linear algebra, matrix inversion, newton approximation, numerics, parallel algorithms, polylogarithmic time, strassen's inversion algorithm

Peter Sanders, Jochen Speck, Raoul Steffen

2013-07-01T23:59:59.000Z

128

Understanding, Modeling and Predicting Hidden Solder Joint Shape Using Active Thermography  

E-Print Network (OSTI)

Characterizing hidden solder joint shapes is essential for electronics reliability. Active thermography is a methodology to identify hidden defects inside an object by means of surface abnormal thermal response after applying a heat flux. This research focused on understanding, modeling, and predicting hidden solder joint shapes. An experimental model based on active thermography was used to understand how the solder joint shapes affect the surface thermal response (grand average cooling rate or GACR) of electronic multi cover PCB assemblies. Next, a numerical model simulated the active thermography technique, investigated technique limitations and extended technique applicability to characterize hidden solder joint shapes. Finally, a prediction model determined the optimum active thermography conditions to achieve an adequate hidden solder joint shape characterization. The experimental model determined that solder joint shape plays a higher role for visible than for hidden solder joints in the GACR; however, a MANOVA analysis proved that hidden solder joint shapes are significantly different when describe by the GACR. An artificial neural networks classifier proved that the distances between experimental solder joint shapes GACR must be larger than 0.12 to achieve 85% of accuracy classifying. The numerical model achieved minimum agreements of 95.27% and 86.64%, with the experimental temperatures and GACRs at the center of the PCB assembly top cover, respectively. The parametric analysis proved that solder joint shape discriminability is directly proportional to heat flux, but inversely proportional to covers number and heating time. In addition, the parametric analysis determined that active thermography is limited to five covers to discriminate among hidden solder joint shapes. A prediction model was developed based on the parametric numerical data to determine the appropriate amount of energy to discriminate among solder joint shapes for up to five covers. The degree of agreement between the prediction model and the experimental model was determined to be within a 90.6% for one and two covers. The prediction model is limited to only three solder joints, but these research principles can be applied to generate more realistic prediction models for large scale electronic assemblies like ball grid array assemblies having as much as 600 solder joints.

Giron Palomares, Jose

2012-05-01T23:59:59.000Z

129

A feasibility study for experimentally determining dynamic force distribution in a lap joint.  

SciTech Connect

Developing constitutive models of the physics in mechanical joints is currently stymied by inability to measure forces and displacements within the joint. The current state of the art estimates whole joint stiffness and energy loss per cycle from external measured force input and one or two acceleration responses. To validate constitutive models beyond this state requires a measurement of the distributed forces and displacements at the joint interface. Unfortunately, introducing measurement devices at the interface completely disrupts the desired physics. A feasibility study is presented for a non-intrusive method of solving for the interface dynamic forces from an inverse problem using full field measured responses. The responses come from the viewable surface of a beam. The noise levels associated with digital image correlation and continuous scanning laser Doppler velocimetry are evaluated from typical beam experiments. Two inverse problems are simulated. One utilizes the extended Sum of Weighted Accelerations Technique (SWAT). The second is a new approach dubbed the method of truncated orthogonal forces. These methods are much more robust if the contact patch geometry is well identified. Various approaches to identifying the contact patch are investigated, including ion marker tracking, Prussian blue and ultrasonic measurements. A typical experiment is conceived for a beam which has a lap joint at one end with a single bolt connecting it to another identical beam. In a virtual test using the beam finite element analysis, it appears that the SWAT inverse method requires evaluation of too many coefficients to adequately identify the force distribution to be viable. However, the method of truncated orthogonal forces appears viable with current digital image correlation (and probably other) imaging techniques.

Mayes, Randall Lee

2013-11-01T23:59:59.000Z

130

"Sousveillance": inverse surveillance in multimedia imaging  

Science Conference Proceedings (OSTI)

This is a personal narrative that began 30 years ago as a childhood hobby, of wearing and implanting various sensors, effectors, and multimedia computation in order to re-define personal space and modify sensory perception computationally. This work ... Keywords: computer mediated reality, cyborglog, equiveillance, eyetap, inverse surveillance, sousveillance, surveillance, weblog

Steve Mann

2004-10-01T23:59:59.000Z

131

Designing Optimal Spectral Filters for Inverse Problems  

Science Conference Proceedings (OSTI)

Spectral filtering suppresses the amplification of errors when computing solutions to ill-posed inverse problems; however, selecting good regularization parameters is often expensive. In many applications, data are available from calibration experiments. ... Keywords: Bayes risk, Bayesian risk, Tikhonov, Wiener filter, empirical risk, filtering, ill-posed problem, image deblurring, machine learning, optimal design, optimal filtering, regularization, singular value decomposition, stochastic programming

Julianne Chung; Matthias Chung; Dianne P. O'Leary

2011-11-01T23:59:59.000Z

132

Arctic Inversion Strength in Climate Models  

Science Conference Proceedings (OSTI)

Recent work indicates that climate models have a positive bias in the strength of the wintertime low-level temperature inversion over the high-latitude Northern Hemisphere. It has been argued this bias leads to underestimates of the Arctic’s ...

Brian Medeiros; Clara Deser; Robert A. Tomas; Jennifer E. Kay

2011-09-01T23:59:59.000Z

133

A search for inverse fission of uranium  

SciTech Connect

There is a long-term interest in running the fission reaction backward, i.e., studying the 'inverse fission' of uranium. The recent availability of beams of n-rich fission fragments has stimulated interest in this endeavor. The purpose is to search for inverse fission in the reactions {sup 124,132}Sn + {sup 100}Mo. In the {sup 124}Sn + {sup 100}Mo reaction, evaporation residues were searched for using in-beam detection of evaporation residues, in-beam {alpha} spectroscopy, and post-irradiation {alpha} spectroscopy, while in the {sup 132}Sn + {sup 100}Mo reaction, the evaporation residue {sup 230}U was searched for using post-irradiation {alpha} spectroscopy. No evidence for the occurrence of the inverse fission reactions was found. The upper-limit cross section for the latter reaction is {approx}550 {mu}b, while the experimental upper-limit cross section for the former reaction is about 21{sup -21}{sup +38} nb. The intensity of suitable radioactive beams is not high enough at present to detect inverse fission. For the {sup 124}Sn + {sup 100}Mo reaction, the observed upper limits are below the estimates of current models for these reactions, probably due to fusion hindrance.

Yanez, R [Oregon State University, Corvallis; Loveland, Walter [Oregon State University; Beckerman, J. [Oregon State University, Corvallis; Leonard, M. [Oregon State University, Corvallis; Pettersson, G. [Oregon State University, Corvallis; Gross, Carl J [ORNL; Shapira, Dan [ORNL; Liang, J Felix [ORNL; Kohley, Zachary W [ORNL; Varner Jr, Robert L [ORNL

2012-01-01T23:59:59.000Z

134

Inverse Problems in Classical and Quantum Physics  

E-Print Network (OSTI)

The subject of this thesis is in the area of Applied Mathematics known as Inverse Problems. Inverse problems are those where a set of measured data is analysed in order to get as much information as possible on a model which is assumed to represent a system in the real world. We study two inverse problems in the fields of classical and quantum physics: QCD condensates from tau-decay data and the inverse conductivity problem. We use a functional method which allows us to extract within rather general assumptions phenomenological parameters of QCD (the condensates) from a comparison of the time-like experimental data with asymptotic space-like results from theory. The price to be paid for the generality of assumptions is relatively large errors in the values of the extracted parameters. Although we do not claim that our method is superior to other approaches, we hope that our results lend additional confidence to the numerical results obtained with the help of methods based on QCD sum rules. In this thesis, als...

Almasy, Andrea A

2009-01-01T23:59:59.000Z

135

Joint Staff, and J-Directorate Directives”  

E-Print Network (OSTI)

1. Purpose a. To provide the process and procedures for handling the transition and reconciliation of USJFCOM issuances into CJCS/Joint Staff directives in accordance with (IAW) references a and b. b. For the purpose of this notice, the word “issuances ” refers to USJFCOM policy documents, and the word “directives ” refers to Joint Staff policy documents. 2. Cancellation. None. 3. Applicability. This notice applies to all Joint Staff personnel and to all U.S. Joint Forces Command (USJFCOM) directorates, organizations, or other subordinate activities transitioning to the Joint Staff. It does not apply to USJFCOM entities transitioning to organizations outside the Joint Staff.

Dom/sjs Cjcs Notice

2011-01-01T23:59:59.000Z

136

Inverse Problems in Classical and Quantum Physics  

E-Print Network (OSTI)

The subject of this thesis is in the area of Applied Mathematics known as Inverse Problems. Inverse problems are those where a set of measured data is analysed in order to get as much information as possible on a model which is assumed to represent a system in the real world. We study two inverse problems in the fields of classical and quantum physics: QCD condensates from tau-decay data and the inverse conductivity problem. We use a functional method which allows us to extract within rather general assumptions phenomenological parameters of QCD (the condensates) from a comparison of the time-like experimental data with asymptotic space-like results from theory. The price to be paid for the generality of assumptions is relatively large errors in the values of the extracted parameters. Although we do not claim that our method is superior to other approaches, we hope that our results lend additional confidence to the numerical results obtained with the help of methods based on QCD sum rules. In this thesis, also two approaches of EIT image reconstruction are proposed. The first is based on reformulating the inverse problem in terms of integral equations. This method uses only a single set of measurements for the reconstruction. The second approach is an algorithm based on linearisation which uses more then one set of measurements. A promising result is that one can qualitatively reconstruct the conductivity inside the cross-section of a human chest. Even though the human volunteer is neither two-dimensional nor circular, such reconstructions can be useful in medical applications: monitoring for lung problems such as accumulating fluid or a collapsed lung and noninvasive monitoring of heart function and blood flow.

Andrea A. Almasy

2009-12-02T23:59:59.000Z

137

CX-007391: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

391: Categorical Exclusion Determination 391: Categorical Exclusion Determination CX-007391: Categorical Exclusion Determination Time-lapse Joint Inversion of Geophysical Data and its Application to Geothermal Prospecting GEODE CX(s) Applied: A9, B3.1, B3.6 Date: 12/21/2011 Location(s): Colorado Offices(s): Golden Field Office The Colorado School of Mines (CSM) would utilize DOE and cost share funds to improve the characterization of geothermal reservoirs by developing joint inversion of several geophysical techniques to better delineate the geothermal resource and monitor thermal fluid motion. laboratory work would occur at the Green Center on the CSM campus in Golden, Colorado. CX-007391.pdf More Documents & Publications CX-007889: Categorical Exclusion Determination CX-007389: Categorical Exclusion Determination

138

Importance of Elevation and Temperature Inversions for the Interpretation  

Open Energy Info (EERE)

Importance of Elevation and Temperature Inversions for the Interpretation Importance of Elevation and Temperature Inversions for the Interpretation of Thermal Infrared Satellite Images Used in Geothermal Exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Importance of Elevation and Temperature Inversions for the Interpretation of Thermal Infrared Satellite Images Used in Geothermal Exploration Details Activities (1) Areas (1) Regions (0) Abstract: Examples of nighttime temperature inversions are shown in thermal infrared satellite images collected over the Coso geothermal field in eastern California. Temperature-elevation plots show the normal trend of temperature decrease with elevation, on which temperature inversions appear superimposed as opposite trends. Such inversions are common and they should

139

United States and France Sign Joint Statement on Civil Liability...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

United States and France Sign Joint Statement on Civil Liability for Nuclear Damage United States and France Sign Joint Statement on Civil Liability for Nuclear Damage Joint...

140

Joint Environmental Management System (EMS) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Environmental Management System (EMS) Joint Environmental Management System (EMS) Joint Environmental Management System (EMS) The environmental management system (EMS) has...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Scanned_Joint_Declaration_(Italian).pdf | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

JointDeclaration(Italian).pdf ScannedJointDeclaration(Italian).pdf ScannedJointDeclaration(Italian).pdf More Documents & Publications FTCP Face to Face Meeting - March 30,...

142

International Power Girasolar joint company | Open Energy Information  

Open Energy Info (EERE)

Girasolar joint company Jump to: navigation, search Name International Power Girasolar joint company Sector Solar Product Joint venture announced between US IPWG and...

143

Joint Outreach Task Group Former Workers Screening Program |...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Outreach Task Group Former Workers Screening Program Joint Outreach Task Group Former Workers Screening Program The Joint Outreach Task Group (JOTG) includes representatives...

144

2010_Nuclear_Security_Joint_Statement.pdf | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NuclearSecurityJointStatement.pdf 2010NuclearSecurityJointStatement.pdf 2010NuclearSecurityJointStatement.pdf More Documents & Publications United States and France...

145

Data Management Group Joint Program in Transportation  

E-Print Network (OSTI)

Data Management Group Joint Program in Transportation University of Toronto System Access Request will the University of Toronto, the Joint Program in Transportation Data Management Group or any of its funding

Toronto, University of

146

Optimization Online - Distributionally Robust Joint Chance ...  

E-Print Network (OSTI)

Aug 12, 2010 ... Abstract: We develop tractable semidefinite programming (SDP) based approximations for distributionally robust individual and joint chance ...

147

Alternative Transmission Technologies for Joint Planning Studies  

Science Conference Proceedings (OSTI)

This report describes a detailed analysis of joint transmission planning needs and capabilities, including an assessment of current research in the area. The report has value as a starting point and reference for transmission planners engaged in joint planning exercises because it focuses on technologies that could facilitate joint transmission planning of a bulk power grid. A joint planning exercise involves the collaboration of multiple transmission planning groups that may each have ...

2013-12-09T23:59:59.000Z

148

TMS/ASM Joint Distinguished Lectureship Award  

Science Conference Proceedings (OSTI)

Professional Honors and Awards Recipients of the TMS/ASM Joint Distinguished Lectureship Award. 2011, Subra Suresh. 2010, Mildred Dresselhaus.

149

Optical inverse-square displacement sensor  

DOE Patents (OSTI)

This invention comprises an optical displacement sensor that uses the inverse-square attenuation of light reflected from a diffused surface to calculate the distance from the sensor to the reflecting surface. Light emerging from an optical fiber or the like is directed onto the surface whose distance is to be measured. The intensity I of reflected light is angle dependent, but within a sufficiently small solid angle it falls off as the inverse square of the distance from the surface. At least a pair of optical detectors are mounted to detect the reflected light within the small solid angle, their ends being at different distances R and R + [Delta]R from the surface. The distance R can then be found in terms of the ratio of the intensity measurements and the separation length as given in an equation. 10 figs.

Howe, R.D.; Kychakoff, G.

1989-09-12T23:59:59.000Z

150

Optical inverse-square displacement sensor  

DOE Patents (OSTI)

This invention comprises an optical displacement sensor that uses the inverse-square attenuation of light reflected from a diffused surface to calculate the distance from the sensor to the reflecting surface. Light emerging from an optical fiber or the like is directed onto the surface whose distance is to be measured. The intensity I of reflected light is angle dependent, but within a sufficiently small solid angle it falls off as the inverse square of the distance from the surface. At least a pair of optical detectors are mounted to detect the reflected light within the small solid angle, their ends being at different distances R and R+.DELTA.R from the surface. The distance R can then be found in terms of the ratio of the intensity measurements and the separation length as ##EQU1##

Howe, Robert D. (San Mateo County, CA); Kychakoff, George (King County, WA)

1989-01-01T23:59:59.000Z

151

University of Toronto Joint Program in Transportation  

E-Print Network (OSTI)

University of Toronto Joint Program in Transportation Data Management Group GTA A.M. PEAK HOUR ­ Notation page i University of Toronto Joint Program in Transportation Data Management Group Preface the joint efforts of transportation planning staff of the Regional Municipalities of York, Peel, Durham

Toronto, University of

152

Joint News Release ELEVENTH ITER NEGOTIATIONS MEETING  

E-Print Network (OSTI)

Joint News Release ELEVENTH ITER NEGOTIATIONS MEETING CHENGDU , CHINA, 24OCTOBER 2005 Delegations of America met in CHENGDU on 24October 2005 to continue their work to reach agreement on the joint the project and its procurements, and the continuing joint drafting of the agreement on establishing

153

JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO  

E-Print Network (OSTI)

JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2001 TRANSPORTATION TOMORROW SURVEY not to participate) #12;JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2001 TRANSPORTATION TOMORROW SURVEY Survey Area 2001 only 1996 only 1996 and 2001 1986, 1991, 1996 and 2001 #12;JOINT PROGRAM

Toronto, University of

154

Evaluation of Medium-Voltage Cable Joints  

Science Conference Proceedings (OSTI)

This research is a continuation of work evaluating performance of state-of-the-art joints. Three single-phase cold shrink joints and three "I"-type premolded separable connector joints were evaluated. Two of the separable connectors were rated 600 A and one was rated 900 A; both were installed on ethylene propylene rubber (EPR) 15-kV cables.

2006-09-27T23:59:59.000Z

155

High-Inversion Fog Episodes in Central California  

Science Conference Proceedings (OSTI)

The meteorological conditions associated with the high-inversion fog episode on 23–28 December 1978 near Chico, California, are described. In general, the meteorological conditions throughout the fog and inversion layers were characterized by ...

Stephen Holets; Robert N. Swanson

1981-08-01T23:59:59.000Z

156

Waves on a Marine Inversion Undergoing Mountain Leeside Wind Shear  

Science Conference Proceedings (OSTI)

Inland penetration of a shallow layer of marine air is a common occurrence along the coast of southern California. The marine air generally is confined to the coastal basin by surrounding mountains and a capping inversion. Air above the inversion ...

William T. Sommers

1981-06-01T23:59:59.000Z

157

Error Budget of Inverse Box Models: The North Atlantic  

Science Conference Proceedings (OSTI)

Linear inverse box models based on hydrographic data are widely used to estimate the ocean circulation and associated transports of heat and of other important quantities. The inverse method permits calculation of a circulation that is consistent ...

Alexandre Ganachaud

2003-11-01T23:59:59.000Z

158

Antarctic Low-Tropospheric Humidity Inversions: 10-Yr Climatology  

Science Conference Proceedings (OSTI)

Humidity inversions are nearly permanently present in the coastal Antarctic atmosphere. This is shown based on an investigation of statistical characteristics of humidity inversions at 11 Antarctic coastal stations using radiosonde data from the ...

Tiina Nygĺrd; Teresa Valkonen; Timo Vihma

2013-07-01T23:59:59.000Z

159

Wrist-Partitioned Inverse Kinematic Accelerations and Manipulator Dynamics  

E-Print Network (OSTI)

An efficient algorithm is presented for the calculation of the inverse kinematic accelerations for a 6 degree-of-freedom manipulator with a spherical wrist. The inverse kinematic calculation is shown to work synergistically ...

Hollerbach, John M.

1983-04-01T23:59:59.000Z

160

Joint interaction with embedded concretions: joint loading congurations inferred from propagation paths  

E-Print Network (OSTI)

Joint interaction with embedded concretions: joint loading con®gurations inferred from propagation The interaction between propagating joints and embedded concretions in a Devonian black shale near Seneca Lake, NY, permits identi®cation of the loading con®gurations responsible for two joint sets of dierent ages striking

Engelder, Terry

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Computationally efficient Bayesian inference for inverse problems.  

SciTech Connect

Bayesian statistics provides a foundation for inference from noisy and incomplete data, a natural mechanism for regularization in the form of prior information, and a quantitative assessment of uncertainty in the inferred results. Inverse problems - representing indirect estimation of model parameters, inputs, or structural components - can be fruitfully cast in this framework. Complex and computationally intensive forward models arising in physical applications, however, can render a Bayesian approach prohibitive. This difficulty is compounded by high-dimensional model spaces, as when the unknown is a spatiotemporal field. We present new algorithmic developments for Bayesian inference in this context, showing strong connections with the forward propagation of uncertainty. In particular, we introduce a stochastic spectral formulation that dramatically accelerates the Bayesian solution of inverse problems via rapid evaluation of a surrogate posterior. We also explore dimensionality reduction for the inference of spatiotemporal fields, using truncated spectral representations of Gaussian process priors. These new approaches are demonstrated on scalar transport problems arising in contaminant source inversion and in the inference of inhomogeneous material or transport properties. We also present a Bayesian framework for parameter estimation in stochastic models, where intrinsic stochasticity may be intermingled with observational noise. Evaluation of a likelihood function may not be analytically tractable in these cases, and thus several alternative Markov chain Monte Carlo (MCMC) schemes, operating on the product space of the observations and the parameters, are introduced.

Marzouk, Youssef M.; Najm, Habib N.; Rahn, Larry A.

2007-10-01T23:59:59.000Z

162

Modeling Direct and Inverse Problems in Ferritic Heat-Exchanger ...  

Science Conference Proceedings (OSTI)

Symposium, Data Analytics for Materials Science and Manufacturing. Presentation Title, Modeling Direct and Inverse Problems in Ferritic Heat- Exchanger Tubes.

163

Metal-ceramic joint assembly  

DOE Patents (OSTI)

A metal-ceramic joint assembly in which a brazing alloy is situated between metallic and ceramic members. The metallic member is either an aluminum-containing stainless steel, a high chromium-content ferritic stainless steel or an iron nickel alloy with a corrosion protection coating. The brazing alloy, in turn, is either an Au-based or Ni-based alloy with a brazing temperature in the range of 9500 to 1200.degree. C.

Li, Jian (New Milford, CT)

2002-01-01T23:59:59.000Z

164

Hydraulic fracturing of jointed formations  

DOE Green Energy (OSTI)

Measured by volume, North America's largest hydraulic fracturing operations have been conducted at Fenton Hill, New Mexico to create geothermal energy reservoirs. In the largest operation 21,000 m/sup 3/ of water were injected into jointed granitic rock at a depth of 3.5 km. Microearthquakes induced by this injection were measured with geophones placed in five wells drilled into, or very close, to the reservoir, as well as 11 surface seismometers. The large volume of rock over which the microearthquakes were distributed indicates a mechanism of hydraulic stimulation which is at odds with conventional fracturing theory, which predicts failure along a plane which is perpendicular to the least compressive earth stress. A coupled rock mechanics/fluid flow model provides much of the explanation. Shear slippage along pre-existing joints in the rock is more easily induced than conventional tensile failure, particularly when the difference between minimum and maximum earth stresses is large and the joints are oriented at angles between 30 and 60 degrees to the principal earth stresses, and a low viscosity fluid like water is injected. Shear slippage results in local redistribution of stresses, which allows a branching, or dendritic, stimulation pattern to evolve, in agreement with the patterns of microearthquake locations. These results are qualitatively similar to the controversial process known as ''Kiel'' fracturing, in which sequential injections and shut-ins are repeated to create dendritic fractures for enhanced oil and gas recovery. However, we believe that the explanation is shear slippage of pre-existing joints and stress redistribution, not proppant bridging and fluid blocking as suggested by Kiel. 15 refs., 10 figs.

Murphy, H.D.; Fehler, M.C.

1986-01-01T23:59:59.000Z

165

Joint Environmental Management System (EMS) Declaration of Conformance...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Services Environmental Management System Joint Environmental Management System (EMS) Declaration of Conformance Joint Environmental Management System (EMS) Declaration of...

166

Malibu Joint Venture | Open Energy Information  

Open Energy Info (EERE)

Malibu Joint Venture Malibu Joint Venture Jump to: navigation, search Name Malibu Joint Venture Place Germany Sector Solar Product String representation "German utility ... e of next year." is too long. References Malibu Joint Venture[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Malibu Joint Venture is a company located in Germany . References ↑ "Malibu Joint Venture" Retrieved from "http://en.openei.org/w/index.php?title=Malibu_Joint_Venture&oldid=348612" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

167

Joint inversion of marine seismic AVA and CSEM data using statistical rock-physics models and Markov random fields: Stochastic inversion of AVA and CSEM data  

E-Print Network (OSTI)

e.g. , CO2 sand and non-CO2 sand and shale) or three (e.g. ,CO2 sand, shale and brine sand). Let vectors ? and S be theif the lithotype is not shale, we have f ( S i | L i ) N ( ?

Chen, J.

2013-01-01T23:59:59.000Z

168

Joint inversion of marine seismic AVA and CSEM data using statistical rock-physics models and Markov random fields: Stochastic inversion of AVA and CSEM data  

E-Print Network (OSTI)

impedance, density, electrical resistivity, lithotypes,are inverted for electrical resistivity. Secondly, physical-and logarithmic electrical resistivity, between depths 2100

Chen, J.

2013-01-01T23:59:59.000Z

169

Joint torsion of several commuting operators.  

E-Print Network (OSTI)

We introduce the notion of joint torsion for several commuting operators satisfying a Fredholm condition. This new secondary invariant takes values in the group of invertibles of a field. It is constructed by comparing determinants associated with different filtrations of a Koszul complex. Our notion of joint torsion generalizes the Carey-Pincus joint torsion of a pair of commuting Fredholm operators. As an example, under more restrictive invertibility assumptions, we show that the joint torsion recovers the multiplicative Lefschetz numbers. Furthermore, in the case of Toeplitz operators over the polydisc we provide a link between the joint torsion and the Cauchy integral formula. We will also consider the algebraic properties of the joint torsion. They include a cocycle property, a symmetry property, a triviality property and a multiplicativity property. The proof of these results relies on a quite general comparison theorem for vertical and horizontal torsion isomorphisms associated with certain diagrams of chain complexes.

Jens Kaad

170

NIST Joint Cloud and Big Data Workshop  

Science Conference Proceedings (OSTI)

NIST Joint Cloud and Big Data Workshop. Purpose: ... The second and third days of the workshop focused on the intersection of Cloud and Big Data. ...

2013-01-31T23:59:59.000Z

171

Joint Outreach Task Group Calendar: September 2013  

Energy.gov (U.S. Department of Energy (DOE))

Joint Outreach Task Group (JOTG)has created a monthly calendar of community events to facilitate interagency and community involvement in these events. September 2013

172

U.S.-Japan Joint Statement  

NLE Websites -- All DOE Office Websites (Extended Search)

Release August 7, 2003 2003817 STATEMENT BY PHILIP T. REEKER, DEPUTY SPOKESMAN Joint Statement of The United States and Japan on High-Level Consultations on Climate Change...

173

A ”JOINT+MARGINAL” APPROACH TO PARAMETRIC ...  

E-Print Network (OSTI)

the cost vector (of the objective function to optimize) are random variables with joint distribution ?, some bounds on the expected optimal value have been ...

174

High-temperature brazed ceramic joints  

DOE Patents (OSTI)

High-temperature joints formed from metallized ceramics are disclosed wherein the metal coatings on the ceramics are vacuum sputtered thereon.

Jarvinen, Philip O. (Amherst, NH)

1986-01-01T23:59:59.000Z

175

Joint minimization with alternating Bregman proximity operators  

E-Print Network (OSTI)

Dec 28, 2004 ... Joint minimization with alternating Bregman proximity operators. H. H. Bauschke (hbauschk ***at*** uoguelph.ca) P. L. Combettes (plc ***at*** ...

176

Collaborations and Joint R&D  

Collaborations and Joint R&D. R&D Collaborations Map. These stories highlight some of the ways Argonne has worked with industrial companies to improve processes ...

177

Joint Actinide Shock Physics Experimental Research | National...  

National Nuclear Security Administration (NNSA)

Home > About Us > Our Programs > Defense Programs > Office of Research, Development, Test Capabilities and Evaluation > Office of Research and Development > Facilities > Joint...

178

Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy April 23, 2012 - 2:25pm Addthis The governments of the United States of America and the Republic of Iraq reaffirmed their commitment to joint cooperation in the areas of oil production and export, natural gas, electricity, and critical energy infrastructure protection during the inaugural meeting of the Joint Coordinating Committee (JCC) on Energy on April 23, 2012. This meeting, held at the U.S. Department of Energy, was co-chaired by Iraqi Deputy Prime Minister for Energy Dr. Hussain Al Shahristani and U.S. Deputy Secretary of Energy Daniel Poneman and Special Envoy and Coordinator for International Energy Affairs at the U.S. Department of State Ambassador

179

Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy Joint Statement of the U.S.-Iraq Joint Coordinating Committee on Energy April 23, 2012 - 2:25pm Addthis The governments of the United States of America and the Republic of Iraq reaffirmed their commitment to joint cooperation in the areas of oil production and export, natural gas, electricity, and critical energy infrastructure protection during the inaugural meeting of the Joint Coordinating Committee (JCC) on Energy on April 23, 2012. This meeting, held at the U.S. Department of Energy, was co-chaired by Iraqi Deputy Prime Minister for Energy Dr. Hussain Al Shahristani and U.S. Deputy Secretary of Energy Daniel Poneman and Special Envoy and Coordinator for International Energy Affairs at the U.S. Department of State Ambassador

180

Analysis of boiling experiment using inverse modeling  

DOE Green Energy (OSTI)

Numerical predictions of geothermal reservoir behavior strongly depend on the assumed steam-water relative permeabilities, which are difficult and time-consuming to measure in the laboratory. This paper describes the esti- mation of the parameters of the relative per- meability and capillary pressure functions by automatically matching simulation results to data from a transient boiling experiment performed on a Berea sandstone. A sensitivity analysis reveals the strong dependence of the observed system behavior on effects such as heat transfer from the heater to the core, as well as heat losses through the insulation. Parameters of three conceptual models were estimated by inverse modeling. Each calibra- tion yields consistent effective steam perme- abilities, but the shape of the liquid relative permeability remains ambiguous.

Finsterle, S.; Guerrero, M.; Satik, C.

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

The twin bilinear diffie-Hellman inversion problem and applications  

Science Conference Proceedings (OSTI)

We propose a new computational problem and call it the twin bilinear Diffie-Hellman inversion (BDHI) problem. Inspired by the technique proposed by Cash, Kiltz and Shoup, we have developed a new trapdoor test which enables us to prove that the twin BDHI ... Keywords: bilinear diffie-Hellman inversion problem, identity-based encryption, identity-based key encapsulation, trapdoor test, twin bilinear diffie-Hellman inversion problem

Yu Chen; Liqun Chen

2010-12-01T23:59:59.000Z

182

Inversion of synthetic aperture radar interferograms for sources...  

Open Energy Info (EERE)

Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie Valley geothermal field Jump to: navigation, search OpenEI Reference...

183

Importance of Elevation and Temperature Inversions for the Interpretat...  

Open Energy Info (EERE)

Importance of Elevation and Temperature Inversions for the Interpretation of Thermal Infrared Satellite Images Used in Geothermal Exploration Jump to: navigation, search GEOTHERMAL...

184

Joint Institute for High Temperatures  

National Nuclear Security Administration (NNSA)

Joint Institute for High Temperatures of Russian Academy of Sciences Moscow Institute of Physics and Technology Extended title Extended title Excited state of warm dense matter or Exotic state of warm dense matter or Novel form of warm dense matter or New form of plasma Three sources of generation similarity: solid state density, two temperatures: electron temperature about tens eV, cold ions keep original crystallographic positions, but electron band structure and phonon dispersion are changed, transient but steady (quasi-stationary for a short time) state of non-equilibrium, uniform plasmas (no reference to non-ideality, both strongly and weakly coupled plasmas can be formed) spectral line spectra are emitted by ion cores embedded in plasma environment which influences the spectra strongly,

185

Biofluid lubrication for artificial joints  

E-Print Network (OSTI)

This research investigated biofluid lubrication related to artificial joints using tribological and rheological approaches. Biofluids studied here represent two categories of fluids, base fluids and nanostructured biofluids. Base fluids were studied through comparison of synthetic fluids (simulated body fluid and hyaluronic acid) as well as natural biofluids (from dogs, horses, and humans) in terms of viscosity and fluid shear stress. The nano-structured biofluids were formed using molecules having well-defined shapes. Understanding nano-structured biofluids leads to new ways of design and synthesis of biofluids that are beneficial for artificial joint performance. Experimental approaches were utilized in the present research. This includes basic analysis of biofluids’ property, such as viscosity, fluid shear stress, and shear rate using rheological experiments. Tribological investigation and surface characterization were conducted in order to understand effects of molecular and nanostructures on fluid lubrication. Workpiece surface structure and wear mechanisms were investigated using a scanning electron microscope and a transmission electron microscope. The surface topography was examined using a profilometer. The results demonstrated that with the adding of solid additives, such as crown ether or fullerene acted as rough as the other solids in the 3-body wear systems. In addition, the fullerene supplied low friction and low wear, which designates the lubrication purpose of this particular particle system. This dissertation is constructed of six chapters. The first chapter is an introduction to body fluids, as mentioned earlier. After Chapter II, it examines the motivation and approach of the present research, Chapter III discusses the experimental approaches, including materials, experimental setup, and conditions. In Chapter IV, lubrication properties of various fluids are discussed. The tribological properties and performance nanostructured biofluids are discussed in Chapter V, followed by summary and conclusions in Chapter VI.

Pendelton, Alice Mae

2008-12-01T23:59:59.000Z

186

High temperature ceramic/metal joint structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

187

Integrated Joint Actuator for Serpentine Robots  

E-Print Network (OSTI)

Abstract—Serpentine robots, also sometimes called “snake robots, ” are slender, multisegmented vehicles designed to provide greater mobility than conventional wheeled or tracked robots. Serpentine robots are typically comprised of three or more rigid segments connected by two or three degrees of freedom joints. The segments typically have powered wheels, tracks, or legs to propel the vehicle forward; the joints may be powered or unpowered. We have developed a joint actuator system that is highly optimized for use in serpentine robots. This article first presents an analysis of the particular requirements for joint actuators in serpentine robots. We then compare existing actuators against those requirements and show that pneumatic bellows are ideally suited for this application. Following this analysis, this paper introduces our fully functional, pneumatically operated actuation system that is efficiently integrated in the space occupied by a joint. This system,

Grzegorz Granosik; Johann Borenstein; Senior Member

2005-01-01T23:59:59.000Z

188

Parallel implementation of stochastic inversion of seismic tomography data  

Science Conference Proceedings (OSTI)

In this paper parallel implementation of stochastic inversion of seismic tomography data was presented. Classical approach to travel time tomography assumes straight line of seismic rays between sources and receives points and isotropy of geological ... Keywords: inverse problem, master-slave paradigm, seismic anisotropy, seismic tomography

Maciej Dwornik; Anna Pi?ta

2011-09-01T23:59:59.000Z

189

Distribution et association des inversions chromosomiques dans trois populations naturelles  

E-Print Network (OSTI)

, one on each of the major autosome arms, are cosmopolitan. The Tunisian popu- lation shows the greatest distribution of cosmopolitan inversions between individuals of the French population is observed in the Tunisian lines. Linkage disequilibrium exists between pair of cosmopolitan inversions of the #12;second

Recanati, Catherine

190

Parallel algorithms for solution of air pollution inverse problems  

Science Conference Proceedings (OSTI)

Parallelization of Marchuk's method for solution of inverse problems based on adjoint equations and dual representation of contaminant concentration functional is considered here. There are N individual adjoint equations independently solved at each ... Keywords: air pollution, domain decomposition, functional decomposition, inverse problems, parallel algorithms

Alexander Starchenko; Elena Panasenko

2010-05-01T23:59:59.000Z

191

Inverse Modelling of the Kawerau Geothermal Reservoir, NZ  

DOE Green Energy (OSTI)

In this paper we describe an existing model of the Kawerau geothermal field and attempts to improve this model using inverse modeling techniques. A match of model results to natural state temperatures and pressures at three reference depths are presented. These are used to form and ''objective function'' to be minimized by inverse modeling.

White, S.P.

1995-01-01T23:59:59.000Z

192

Inverse problem of time-dependent heat sources numerical reconstruction  

Science Conference Proceedings (OSTI)

Abstract: This work studies the inverse problem of reconstructing a time-dependent heat source in the heat conduction equation using the temperature measurement specified at an internal point. Problems of this type have important applications in several ... Keywords: 35R30, 49J20, Green function, Heat source, Inverse problem, Landweber iteration, Numerical results

Liu Yang; Mehdi Dehghan; Jian-Ning Yu; Guan-Wei Luo

2011-04-01T23:59:59.000Z

193

Advanced algorithms for coupled and inverse problems in electrical engineering  

Science Conference Proceedings (OSTI)

This paper presents some theoretical and numerical problems that arise in the analysis of coupled electromagnetic-thermal problems, and inverse problems in electromagnetic devices. The principal objective of the paper is to describe some computational ... Keywords: coupled fields, finite element method, inverse problems

Ion Cârstea

2008-06-01T23:59:59.000Z

194

Aerosol Size Distributions from Genetic Inversion of Polar Nephelometer Data  

Science Conference Proceedings (OSTI)

It is shown that genetic inversions can be used to recover lognormal aerosol size distributions from multiangle optical scattering cross-section data measured by a polar nephelometer at a wavelength of 0.532 ?m. The inversions can also be used to ...

B. R. Lienert; J. N. Porter; S. K. Sharma

2003-10-01T23:59:59.000Z

195

United States-Japan Joint Nuclear Energy Action Plan | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

United States-Japan Joint Nuclear Energy Action Plan United States-Japan Joint Nuclear Energy Action Plan An outline on the United States and Japan's joint nuclear energy action...

196

U.S.-Brazil Strategic Energy Dialogue Joint Report | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Brazil Strategic Energy Dialogue Joint Report U.S.-Brazil Strategic Energy Dialogue Joint Report First Joint Report to Presidents on U.S.-Brazil Strategic Energy Dialogue.pdf More...

197

Inversion of synthetic aperture radar interferograms for sources of  

Open Energy Info (EERE)

Inversion of synthetic aperture radar interferograms for sources of Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie Valley geothermal field Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie Valley geothermal field Authors Bill Foxall and D. W. Vasco Published Journal Journal of Volcanology and Geothermal Research, 2008 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie Valley geothermal field Citation Bill Foxall,D. W. Vasco. 2008. Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie

198

New results on the resistivity structure of Merapi Volcano(Indonesia), derived from 3D restricted inversion of long-offsettransient electromagnetic data  

SciTech Connect

Three long-offset transient electromagnetic (LOTEM) surveyswerecarried out at the active volcano Merapi in Central Java (Indonesia)during the years 1998, 2000, and 2001. The measurements focused on thegeneral resistivity structure of the volcanic edifice at depths of 0.5-2km and the further investigation of a southside anomaly. The measurementswere insufficient for a full 3D inversion scheme, which could enable theimaging of finely discretized resistivity distributions. Therefore, astable, damped least-squares joint-inversion approach is used to optimize3D models with a limited number of parameters. The mode ls feature therealistic simulation of topography, a layered background structure, andadditional coarse 3D blocks representing conductivity anomalies.Twenty-eight LOTEM transients, comprising both horizontal and verticalcomponents of the magnetic induction time derivative, were analyzed. Inview of the few unknowns, we were able to achieve reasonable data fits.The inversion results indicate an upwelling conductor below the summit,suggesting hydrothermal activity in the central volcanic complex. Ashallow conductor due to a magma-filled chamber, at depths down to 1 kmbelow the summit, suggested by earlier seismic studies, is not indicatedby the inversion results. In conjunction with an anomalous-density model,derived from arecent gravity study, our inversion results provideinformation about the southern geological structure resulting from amajor sector collapse during the Middle Merapi period. The density modelallows to assess a porosity range andthus an estimated vertical salinityprofile to explain the high conductivities on a larger scale, extendingbeyond the foothills of Merapi.

Commer, Michael; Helwig, Stefan, L.; Hordt, Andreas; Scholl,Carsten; Tezkan, Bulent

2006-06-14T23:59:59.000Z

199

Linearized Functional Minimization for Inverse Modeling  

SciTech Connect

Heterogeneous aquifers typically consist of multiple lithofacies, whose spatial arrangement significantly affects flow and transport. The estimation of these lithofacies is complicated by the scarcity of data and by the lack of a clear correlation between identifiable geologic indicators and attributes. We introduce a new inverse-modeling approach to estimate both the spatial extent of hydrofacies and their properties from sparse measurements of hydraulic conductivity and hydraulic head. Our approach is to minimize a functional defined on the vectors of values of hydraulic conductivity and hydraulic head fields defined on regular grids at a user-determined resolution. This functional is constructed to (i) enforce the relationship between conductivity and heads provided by the groundwater flow equation, (ii) penalize deviations of the reconstructed fields from measurements where they are available, and (iii) penalize reconstructed fields that are not piece-wise smooth. We develop an iterative solver for this functional that exploits a local linearization of the mapping from conductivity to head. This approach provides a computationally efficient algorithm that rapidly converges to a solution. A series of numerical experiments demonstrates the robustness of our approach.

Wohlberg, Brendt [Los Alamos National Laboratory; Tartakovsky, Daniel M. [University of California, San Diego; Dentz, Marco [Institute of Environmental Assessment and Water Research, Barcelona, Spain

2012-06-21T23:59:59.000Z

200

Sealed joint structure for electrochemical device  

DOE Patents (OSTI)

Several members make up a joint in a high-temperature electrochemical device, wherein the various members perform different functions. The joint is useful for joining multiple cells (generally tubular modules) of an electrochemical device to produce a multi-cell segment-in-series stack for a solid oxide fuel cell, for instance. The joint includes sections that bond the joining members to each other; one or more seal sections that provide gas-tightness, and sections providing electrical connection and/or electrical insulation between the various joining members. A suitable joint configuration for an electrochemical device has a metal joint housing, a first porous electrode, a second porous electrode, separated from the first porous electrode by a solid electrolyte, and an insulating member disposed between the metal joint housing and the electrolyte and second electrode. One or more brazes structurally and electrically connects the first electrode to the metal joint housing and forms a gas tight seal between the first electrode and the second electrode.

Tucker, Michael C; Jacobson, Craig P; De Jonghe, Lutgard C; Visco, Steven J

2013-05-21T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

United States and Japan Sign Joint Nuclear Energy Action Plan...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Japan Sign Joint Nuclear Energy Action Plan to Promote Nuclear Energy Cooperation United States and Japan Sign Joint Nuclear Energy Action Plan to Promote Nuclear Energy...

202

Enjoy The Benefits of Joint ASM/TMS Chapter Membership  

Science Conference Proceedings (OSTI)

Enjoy The Benefits of Joint ASM/TMS Chapter Membership. There are many benefits of being a part of the Joint ASM/TMS Student Program—scholarships, ...

203

EA-1945: Northern Mid-Columbia Joint Project; Grant, Douglas...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Northern Mid-Columbia Joint Project; Grant, Douglas, and Chelan Counties, Washington EA-1945: Northern Mid-Columbia Joint Project; Grant, Douglas, and Chelan Counties,...

204

Second National Report for the Joint Convention on the Safety...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Second National Report for the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management Second National Report for the Joint...

205

Fracture Mechanics of Solder Joint under Mechanical Fatigue  

Science Conference Proceedings (OSTI)

Structural similarities in solder joint used in these studies yet varying locations of cracking site suggest that fracture in solder joint is affected greatly by a subtle ...

206

United States -Japan Joint Nuclear Energy Action Plan | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

United States -Japan Joint Nuclear Energy Action Plan United States -Japan Joint Nuclear Energy Action Plan President Bush of the United States and Prime Minister Koizumi of Japan...

207

OMB and CEQ Joint Memorandum on Environmental Collaboration and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict Resolution OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict Resolution This Office...

208

Joint Institute for Neutron Sciences | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Institute for Neutron Sciences SHARE Joint Institute for Neutron Sciences JINS is located on Chestnut Ridge within the 80-acre SNS site, part of Oak Ridge National...

209

Fourth National Report for the Joint Convention on the Safety...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fourth National Report for the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management Fourth National Report for the Joint...

210

Projects Selected for Funding Under the Joint NYSERDA / DOE Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Projects Selected for Funding Under the Joint NYSERDA DOE Energy Storage Initiative Projects Selected for Funding Under the Joint NYSERDA DOE Energy Storage Initiative New York...

211

Transcript of March 4, 2011 Joint Public Meeting | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transcript of March 4, 2011 Joint Public Meeting Transcript of March 4, 2011 Joint Public Meeting Official Transcript of Proceedings - Nuclear Regulatory Commission Transcript of...

212

TMS/ASM Joint Commission on Metallurgical Transactions  

Science Conference Proceedings (OSTI)

TMS/ASM Joint Commission on Metallurgical Transactions. The function of the Joint Commission is as follows: Consistent with the Purpose and Scope of ...

213

Third National Report for the Joint Convention on the Safety...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Third National Report for the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management Third National Report for the Joint...

214

Joint Urban 2003: Indoor Measurements Final Data Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Urban 2003: Indoor Measurements Final Data Report Title Joint Urban 2003: Indoor Measurements Final Data Report Publication Type Report Year of Publication 2004 Authors...

215

Rooted in Wonder: Joint Genome Institute Study Reveals Amazing...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rooted in Wonder: Joint Genome Institute Study Reveals Amazing World Underfoot Rooted in Wonder: Joint Genome Institute Study Reveals Amazing World Underfoot August 13, 2012 -...

216

National Report Joint Convention on the Safety of Spent Fuel...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

National Report Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management National Report Joint Convention on the Safety of Spent...

217

Secretary Bodman, Director Rumyantsev Issue Joint Statement on...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bodman, Director Rumyantsev Issue Joint Statement on Bratislava Nuclear Security Initiatives Secretary Bodman, Director Rumyantsev Issue Joint Statement on Bratislava Nuclear...

218

Joint Maintenance Status Report of Potomac Electric Power Company...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Maintenance Status Report of Potomac Electric Power Company amd PJM Interconnection, LLC Joint Maintenance Status Report of Potomac Electric Power Company amd PJM...

219

Application of High Performance Computing to the DOE Joint Genomic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Application of High Performance Computing to the DOE Joint Genomic Institute's Data Challenges January 25-26, 2010 DOE Joint Genome Institute, Walnut Creek, CA USA -by invitation...

220

US - Brazil Binational Energy Working Group Joint Action Plan...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

US - Brazil Binational Energy Working Group Joint Action Plan US - Brazil Binational Energy Working Group Joint Action Plan brazilactionplan7202010.pdf More Documents &...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Joint Electrical Utilities (Iowa) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Electrical Utilities (Iowa) Joint Electrical Utilities (Iowa) Joint Electrical Utilities (Iowa) < Back Eligibility Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Iowa Program Type Environmental Regulations Provider Iowa Utilities Board Cities may establish utilities to acquire existing electric generating facilities or distribution systems. Acquisition, in this statute, is defined as city involvement, and includes purchase, lease, construction, reconstruction, extension, remodeling, improvement, repair, and equipping of the facility. This chapter does not limit the powers or authority of

222

Estimation of field-scale soil hydraulic and dielectric parameters through joint inversion of GPR and hydrological data  

E-Print Network (OSTI)

Catalog of Vadose Zone Hydraulic Properties for the Hanfordand Measurement of the Hydraulic Properties of UnsaturatedEstimation for Soil Hydraulic Properties Using Zero-Offset

2005-01-01T23:59:59.000Z

223

Estimation of field-scale soil hydraulic and dielectric parameters through joint inversion of GPR and hydrological data  

E-Print Network (OSTI)

Zone Hydraulic Properties for the Hanford Site, Report PNNL-Percolation Theory: Tests of Hanford Site Soils, Vadose Zone200 East Vadose Test Site Hanford, Washington, Electrical

2005-01-01T23:59:59.000Z

224

Estimation of field-scale soil hydraulic and dielectric parameters through joint inversion of GPR and hydrological data  

E-Print Network (OSTI)

for model validation testing. NUREG/CR-5996 , U. S. Nuclearof unsaturated flow models, NUREG/CR-6411 , U. S. Nuclear

2005-01-01T23:59:59.000Z

225

Estimation of field-scale soil hydraulic and dielectric parameters through joint inversion of GPR and hydrological data  

E-Print Network (OSTI)

for the Hanford Site, Report PNNL-13672 , Pacific Northwestfield study, Report PNNL- 13982 , Pacific Northwest Nationaland Seismic Methods, Report PNNL-13791 , Pacific Northwest

2005-01-01T23:59:59.000Z

226

Nome Joint Utility Systems | Open Energy Information  

Open Energy Info (EERE)

Joint Utility Systems Joint Utility Systems Jump to: navigation, search Name Nome Joint Utility Systems Place Alaska Utility Id 13642 Utility Location Yes Ownership M NERC Location AK Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Electrical Charge Residential Power Cost Equalization Average Rates Residential: $0.3600/kWh Commercial: $0.3310/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Nome_Joint_Utility_Systems&oldid=411195

227

Joint Genome Institute (JGI) Projects at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Genome Institute Joint Genome Institute (JGI) Joint Genome Institute (JGI) nicole-illumina-flowcell.jpg Key Challenges: Ensuring that there is a robust computational infrastructure for managing, storing and gleaning scientific insights from the torrent of data that constantly flows from the advanced sequencing platforms at the Department of Energy Joint Genome Institute (JGI). JGI sequencing capacity exceeds 40 billion DNA base pairs per year and is growing at a rate that exceeds computer hardware improvements, with exponential increases in computation and storage needed. JGI will generate about 1 petabyte of data in their first year as a NERSC partner; this is expected to double each year. Why it Matters: JGI is the primary production sequencing facility for the DOE. By revealing the genetic blueprint and fundamental principles that

228

Climate Leaders Joint Venture | Open Energy Information  

Open Energy Info (EERE)

Leaders Joint Venture Leaders Joint Venture Jump to: navigation, search Name Climate Leaders' Joint Venture Place Dallas, Texas Product Tudor Investment and Camco International have partnered to create Climate Leaders' Joint Venture. They will have inital working capital of USD 10m, with Camco owning 60%. Coordinates 32.778155°, -96.795404° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.778155,"lon":-96.795404,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

229

ELEMENTS OF JOINT DESIGN FOR WELDING  

SciTech Connect

The design of joints which are to be fusion welded by any of the arc or gas processes is discussed. The designs are applicable to either manual or machine welding. (A.C.)

Koopman, K.H.

1958-06-01T23:59:59.000Z

230

Predictability of Seasonal Precipitation Using Joint Probabilities  

Science Conference Proceedings (OSTI)

This paper tests whether seasonal mean precipitation is predictable using a new method that estimates and analyzes joint probabilities. The new estimation method is to partition the globe into boxes, pool all data within the box to estimate a ...

M. Tugrul Yilmaz; Timothy DelSole

2010-04-01T23:59:59.000Z

231

The Joint Airport Weather Studies Project  

Science Conference Proceedings (OSTI)

The Joint Airport Weather Studies (JAWS) Project will investigate the microburst event, having 2–10 km spatial and 2–10 min temporal scales, at Denver's Stapleton International Airport during the summer of 1982. JAWS applications and technology ...

John McCarthy; James W. Wilson; T. Theodore Fujita

1982-01-01T23:59:59.000Z

232

Combined Borehole Seismic and Electromagnetic Inversion For High-Resolution Petrophysical Assessment Of Hydocarbon Reservoirs  

Science Conference Proceedings (OSTI)

This report summarizes the work performed between January 2005 and December 2007, under DOE research contract DE-FC26-04NT15507. The project is was performed by the Center for Petroleum and Geosystems Engineering of The University of Texas at Austin and Lawrence Berkeley National Laboratory under the auspices of the National Energy Technology Office (NETL) and the Strategic Center for Natural Gas and Oil (SCNGO). During the three-year project, we developed new methods to combine borehole sonic and electromagnetic (EM) measurements for the improved assessment of elastic and petrophysical properties of rock formations penetrated by a well. Sonic measurements consisted of full waveform acoustic amplitudes acquired with monopole and dipole sources, whereas EM measurements consisted of frequency-domain voltages acquired with multi-coil induction systems. The combination of sonic and EM measurements permitted the joint estimation of elastic and petrophysical properties in the presence of mud-filtrate invasion. It was conclusively shown that the combined interpretation of sonic and EM measurements reduced non-uniqueness in the estimation of elastic and petrophysical properties and improved the spatial resolution of the estimations compared to estimations yielded separately from the two types of measurements. Moreover, this approach enabled the assessment of dynamic petrophysical properties such as permeability, as it incorporated the physics of mud-filtrate invasion in the interpretation of the measurements. The first part of the project considered the development of fast and reliable numerical algorithms to simulate borehole sonic waveforms in 2D, 3D, and radial 1D media. Such algorithms were subsequently used in the quantitative estimation of elastic properties jointly from borehole sonic and EM measurements. In the second part of the project we developed a new algorithm to estimate water saturation, porosity, and dry-rock elastic moduli jointly from borehole sonic and EM measurements. This algorithm assumed radial 1D variations of fluid saturation due to mud-filtrate invasion. Subsequently, we adapted the estimation method to interpret borehole field measurements acquired in both a shaly-sand sedimentary sequence and a tight-gas sandstone formation. In the two cases, we simulated the process of mud-filtrate invasion and concomitantly honored sonic and EM measurements. We produced reliable estimates of permeability and dry-rock moduli that were successfully validated with rock-core measurements. Finally, we introduced a new stochastic inversion procedure to estimate elastic, electrical, and petrophysical properties of layered media jointly from waveform sonic and frequency-domain EM measurements. The procedure was based on Bayesian statistical inversion and delivered estimates of uncertainty under various forms of a-priori information about the unknown properties. Tests on realistic synthetic models confirmed the reliability of this procedure to estimate elastic and petrophysical properties jointly from sonic and EM measurements. Several extended abstracts and conference presentations stemmed from this project, including 2 SEG extended abstracts, 1 SPE extended abstract, and 2 SPWLA extended abstracts. Some of these extended abstracts have been submitted for publication in peer-reviewed journals.

Carlos Torres-Verdin; G. Michael Hoversten; Ki Ha Lee; Gregory Newman; Kurt Nihei

2008-12-31T23:59:59.000Z

233

INTEGRATED APPROACH FOR THE PETROPHYSICAL INTERPRETATION OF POST-AND PRE-STACK 3-D SEISMIC DATA, WELL-LOG DATA, CORE DATA, GEOLOGICAL INFORMATION AND RESERVOIR PRODUCTION DATA VIA BAYESIAN STOCHASTIC INVERSION  

SciTech Connect

The present report summarizes the work carried out between September 30, 2000 and September 30, 2004 under DOE research contract No. DE-FC26-00BC15305. During the three-year project period, we carried out extensive studies on the inversion post-stack and pre-stack data together with well logs, petrophysical information and fluid flow data. We have achieved all the project goals including development of algorithm for joint inversion of pre-stack seismic data, well logs, and time records of fluid production measurements using stochastic inversion algorithms which were demonstrated on realistic synthetic and field data. Our accomplishments are: (1) Joint inversion of post-stack seismic, well log, fluid flow, and petrophysical data: we demonstrated the technique with application to data from the Gulf of Mexico. (2) Development of a robust pre-stack full waveform inversion algorithm: A new approach based on iteration-adaptive regularization that makes use of plane wave transformed seismic data, was developed and applied to OBC dataset from the Gulf of Thailand. The algorithm was also implemented on a cluster of personal computers. (3) Joint inversion of pre-stack seismic and well-log data: A new stochastic optimization algorithm that makes use of the essential features of seismic and well log data was developed and tested on realistic synthetic dataset. (4) Joint inversion of pre-stack seismic and fluid flow data: A novel technique was developed to optimally combine seismic and flow data. The technique makes very realistic estimate of porosity; sensitivity of the flow parameters to two disparate datasets was studied extensively. (5) Direct estimation of petrophysical parameters from seismic data: The pre-stack waveform inversion was modified to invert directly for porosity and saturation using the Biot-Gassmann equation at each iteration step. The final report contains abridged versions of some of our inventions. The works resulted in several peer-reviewed publications. Five papers have been communicated for peer-reviewed publication, and seven papers were presented at conferences. All of these publications and presentations stemmed from work directly related to the goals of our DOE project.

Carlos Torres-Verdin; Mrinal K. Sen

2004-09-01T23:59:59.000Z

234

New inversion methods for the Lorentz Integral Transform  

E-Print Network (OSTI)

The Lorentz Integral Transform approach allows microscopic calculations of electromagnetic reaction cross sections without explicit knowledge of final state wave functions. The necessary inversion of the transform has to be treated with great care, since it constitutes a so-called ill-posed problem. In this work new inversion techniques for the Lorentz Integral Transform are introduced. It is shown that they all contain a regularization scheme, which is necessary to overcome the ill-posed problem. In addition it is illustrated that the new techniques have a much broader range of application than the present standard inversion method of the Lorentz Integral Transform.

Diego Andreasi; Winfried Leidemann; Christoph Reiss; Michael Schwamb

2005-03-11T23:59:59.000Z

235

A simulation tool for the study of symmetric inversions in bacterial genomes  

Science Conference Proceedings (OSTI)

We present the tool SIB that simulates genomic inversions in bacterial chromosomes. The tool simulates symmetric inversions but allows the appearance of nonsymmetric inversions by simulating small syntenic blocks frequently observed on bacterial genome ...

Ulisses Dias; Zanoni Dias; Joăo C. Setubal

2010-10-01T23:59:59.000Z

236

Fluid Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical  

Open Energy Info (EERE)

Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Inverse Modeling Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Fluid Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Inverse Modeling Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Fluid Imaging Project Description EGS has been defined as enhanced reservoirs that have been created to extract economical amounts of heat from low permeability and/or porosity geothermal resources. Critical to the success of EGS is the successful manipulation of fluids in the subsurface to enhance permeability. Knowledge in the change in volume and location of fluids in the rocks and fractures (both natural and induced) will be needed to manage injection strategies such as the number and location of step out wells, in-fill wells and the ratio of injection to production wells. The key difficulty in manipulating fluids has been our inability to reliably predict their locations, movements and concentrations. We believe combining data from MEQ and electrical surveys has the potential to overcome these problems and can meet many of the above needs, economically. Induced seismicity is currently viewed as one of the essential methods for inferring the success of creating fracture permeability and fluid paths during large scale EGS injections. Fluids are obviously playing a critical role in inducing the seismicity, however, other effects such as thermal, geochemical and stress redistribution, etc. may also play a role.

237

Joint sets that enhance production from Middle and  

E-Print Network (OSTI)

E&P NOTE Joint sets that enhance production from Middle and Upper Devonian gas shales joint sets (J1 and J2 sets) as observed in outcrop, core, and borehole images. These joints formed close thermal matura- tion of organic matter. When present together, earlier J1 joints are crosscut by later J2

Engelder, Terry

238

NRDC and Sierra Club Joint Petition November 14, 2011  

E-Print Network (OSTI)

1 NRDC and Sierra Club Joint Petition November 14, 2011 JOINT PETITION OF THE NATURAL RESOURCES the Natural Resources Defense Council (NRDC) and Sierra Club jointly file this petition to request;2 NRDC and Sierra Club Joint Petition November 14, 2011 SB 1368 was signed into law on September 29, 2006

239

On the inverse problem of entropy maximizations (Corresp.)  

Science Conference Proceedings (OSTI)

The inverse isoperimetric problem of the entropy functional is considered in this Correspondence. This problem can be stated as follows: Given a known probability density function (pdf), what prior constraints are needed in order for this pdf to be the ...

J. Noonan; N. Tzannes; T. Costello

1976-01-01T23:59:59.000Z

240

Modeling and inversion of self-potential data  

E-Print Network (OSTI)

This dissertation presents data processing techniques relevant to the acquisition, modeling, and inversion of self-potential data. The primary goal is to facilitate the interpretation of self-potentials in terms of the ...

Minsley, Burke J

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Inversion Breakup in Small Rocky Mountain and Alpine Basins  

Science Conference Proceedings (OSTI)

Comparisons are made between the postsunrise breakup of temperature inversions in two similar closed basins in very different climate settings, one in the eastern Alps and one in the Rocky Mountains. The small, high-altitude, limestone sinkholes ...

C. David Whiteman; Bernhard Pospichal; Stefan Eisenbach; Philipp Weihs; Craig B. Clements; Reinhold Steinacker; Erich Mursch-Radlgruber; Manfred Dorninger

2004-08-01T23:59:59.000Z

242

Inversion of Marine Radar Images for Surface Wave Analysis  

Science Conference Proceedings (OSTI)

A method to estimate sea surface elevation maps from marine radar image sequences is presented. This method is the extension of an existing inverse modeling technique to derive wave spectra from marine radar images, which assumes linear wave ...

JoséC. Nieto Borge; Germán RodrÍguez RodrÍguez; Katrin Hessner; Paloma Izquierdo González

2004-08-01T23:59:59.000Z

243

Global Datasets of Rooting Zone Depth Inferred from Inverse Methods  

Science Conference Proceedings (OSTI)

Two inverse methods are applied to a land surface model to infer global patterns of the hydrologically active depth of the vegetation's rooting zone. The first method is based on the assumption that vegetation is optimally adapted to its ...

Axel Kleidon

2004-07-01T23:59:59.000Z

244

Integrated Forward Simulation and Inverse Design of Materials - TMS  

Science Conference Proceedings (OSTI)

Jul 18, 2007 ... Topic Title: Webcast: Integrated Forward Simulation and Inverse Design of ... Industry/University Cooperative Research Center for Computational ... (Materials Computation and Simulation Environment) project at PSU and the ...

245

Simulations of Trade Wind Cumuli under a Strong Inversion  

Science Conference Proceedings (OSTI)

The fifth intercomparison of the Global Water and Energy Experiment Cloud System Studies Working Group 1 is used as a vehicle for better understanding the dynamics of trade wind cumuli capped by a strong inversion. The basis of the ...

Bjorn Stevens; Andrew S. Ackerman; Bruce A. Albrecht; Andrew R. Brown; Andreas Chlond; Joan Cuxart; Peter G. Duynkerke; David C. Lewellen; Malcolm K. Macvean; Roel A. J. Neggers; Enrique Sánchez; A. Pier Siebesma; David E. Stevens

2001-07-01T23:59:59.000Z

246

Row-Action Inversion of the Barrick–Weber Equations  

Science Conference Proceedings (OSTI)

The Barrick–Weber equations describe the interaction of radar signals with the dynamic ocean surface, and so provide a mathematical basis for oceanic remote sensing. This report considers the inversion of these equations with several of the row-...

J. J. Green; L. R. Wyatt

2006-03-01T23:59:59.000Z

247

A Bernoulli Inverse Method for Determining the Ocean Circulation  

Science Conference Proceedings (OSTI)

A new inverse method for finding the large-scale ocean circulation is described. Unlike most previous methods it uses no horizontal gradient information, and is designed for widely spaced data. The method assumes that density, (linear) potential ...

Peter D. Killworth

1986-12-01T23:59:59.000Z

248

Forecasting Pacific SSTs: Linear Inverse Model Predictions of the PDO  

Science Conference Proceedings (OSTI)

A linear inverse model (LIM) is used to predict Pacific (30°S–60°N) sea surface temperature anomalies (SSTAs), including the Pacific decadal oscillation (PDO). The LIM is derived from the observed simultaneous and lagged covariance statistics of ...

Michael A. Alexander; Ludmila Matrosova; Cécile Penland; James D. Scott; Ping Chang

2008-01-01T23:59:59.000Z

249

Dynamical Adjustment of the Trade Wind Inversion Layer  

Science Conference Proceedings (OSTI)

In schematic north–south cross sections the trade inversion layer is often depicted as sloping upward as air flows toward the intertropical convergence zone. This conceptual view is consistent with purely thermodynamic boundary-layer models, ...

Wayne H. Schubert; Paul E. Ciesielski; Chungu Lu; Richard H. Johnson

1995-08-01T23:59:59.000Z

250

A Particle Filter for Inverse Lagrangian Prediction Problems  

Science Conference Proceedings (OSTI)

The authors present a numerical method for the inverse Lagrangian prediction problem, which addresses retrospective estimation of drifter trajectories through a turbulent flow, given their final positions and some knowledge of the flow field. Of ...

T. Mike Chin; Arthur J. Mariano

2010-02-01T23:59:59.000Z

251

Forward and inverse metabolic engineering strategies for improving polyhydroxybyrate production  

E-Print Network (OSTI)

Forward metabolic engineering (FME) is a rational approach to cellular engineering, relying on an understanding of the entire metabolic network to direct perturbations for phenotype improvement. Conversely, inverse metabolic ...

Tyo, Keith E. J

2008-01-01T23:59:59.000Z

252

Inverse Optimization: An Application to the Capacitated Plant Location Problem  

E-Print Network (OSTI)

Inverse optimization refers to the fact that each time a Lagrangean derived from a given mathematical programming problem is solved, it produces an optimal solution to some problem with a different right hand side. This ...

Bitran, Gabriel R.

253

The Inverse Ocean Modeling System. Part I: Implementation  

Science Conference Proceedings (OSTI)

The Inverse Ocean Modeling (IOM) system constructs and runs weak-constraint, four-dimensional variational data assimilation (W4DVAR) for any dynamical model and any observing array. The dynamics and the observing algorithms may be nonlinear but ...

A. F. Bennett; B. S. Chua; B. L. Pflaum; M. Erwig; Z. Fu; R. D. Loft; J. C. Muccino

2008-09-01T23:59:59.000Z

254

Bayesian inverse problems with Monte Carlo forward models  

E-Print Network (OSTI)

The full application of Bayesian inference to inverse problems requires exploration of a posterior distribution that typically does not possess a standard form. In this context, Markov chain Monte Carlo (MCMC) methods are ...

Bal, Guillaume

255

The Inverse Ocean Modeling System. Part II: Applications  

Science Conference Proceedings (OSTI)

The Inverse Ocean Modeling (IOM) System is a modular system for constructing and running weak-constraint four-dimensional variational data assimilation (W4DVAR) for any linear or nonlinear functionally smooth dynamical model and observing array. ...

J. C. Muccino; H. Luo; H. G. Arango; D. Haidvogel; J. C. Levin; A. F. Bennett; B. S. Chua; G. D. Egbert; B. D. Cornuelle; A. J. Miller; E. Di Lorenzo; A. M. Moore; E. D. Zaron

2008-09-01T23:59:59.000Z

256

Qualification of the Joints for ITER Central Solenoid  

SciTech Connect

The ITER Central Solenoid has 36 interpancake joints, 12 bus joints, and 12 feeder joints in the magnet. The joints are required to have resistance below 4 nOhm at 45 kA at 4.5 K. The US ITER Project Office developed two different types of interpancake joints with some variations in details in order to find a better design, qualify the joints, and establish a fabrication process. We built and tested four samples of the sintered joints and two samples with butt-bonded joints (a total of eight joints). Both designs met the specifications. Results of the joint development, test results, and selection of the baseline design are presented and discussed in the paper.

Martovetsky, Nicolai N [ORNL; Berryhill, Adam B [Cryomagnetics, Inc.; Kenney, Steven J [ORNL

2012-01-01T23:59:59.000Z

257

Joint spacing criterion for equivalent continuum model  

Science Conference Proceedings (OSTI)

Currently, the Yucca Mountain Site Characterization Project is investigating the feasibility of the disposal of high-level radioactive waste in the unsaturated Topopah Spring formation. The Topopah Spring formation is a heavily fractured, predominantly vertically jointed, welded tuff, and the potential disposal area is cut by the Ghost Dance fault and bounded by several other faults structures. The joints in the tuff and the faults may have an impact on the emplacement drift or borehole stability, as well as on the movement of fluids through the rock mass. The design of the repository drifts and layout, the waste emplacement scheme, and the thermomechanical performance of the rock mass will be analyzed using various numerical models. These models may be based on different assumptions regarding the representation of the fracture behavior under given applied stresses, and will range from discrete models where individual mechanically active fractures are treated distinctly, to continuum models where the joint behavior is smeared over a representative volume. There is always the question of applicability of a model with respect to a given material domain to be analyzed. For the mechanical analysis of the rock mass response around a repository drift, the applicability of an equivalent continuum model is dependent on the joint spacing in the rock mass. Considering the joint spacings that may be encountered at the potential repository site, a ratio of joint spacing to the planned drift diameter may be adopted as a criterion for evaluating the applicability of the Compliant Joint Model (CJM) in the Yucca Mountain Site Characterization Project. In this paper, this criterion is established by reviewing basic continuum concepts and numerical approximation implications used to build the CJM and by examining rock mass conditions that may be encountered at the potential Yucca Mountain repository site.

Tsai, F.C.

1995-12-31T23:59:59.000Z

258

Maps and inverse maps in open quantum dynamics  

Science Conference Proceedings (OSTI)

Two kinds of maps that describe evolution of states of a subsystem coming from dynamics described by a unitary operator for a larger system, maps defined for fixed mean values and maps defined for fixed correlations, are found to be quite different for the same unitary dynamics in the same situation in the larger system. An affine form is used for both kinds of maps to find necessary and sufficient conditions for inverse maps. All the different maps with the same homogeneous part in their affine forms have inverses if and only if the homogeneous part does. Some of these maps are completely positive; others are not, but the homogeneous part is always completely positive. The conditions for an inverse are the same for maps that are not completely positive as for maps that are. For maps defined for fixed mean values, the homogeneous part depends only on the unitary operator for the dynamics of the larger system, not on any state or mean values or correlations. Necessary and sufficient conditions for an inverse are stated several different ways: in terms of the maps of matrices, basis matrices, density matrices, or mean values. The inverse maps are generally not tied to the dynamics the way the maps forward are. A trace-preserving completely positive map that is unital cannot have an inverse that is obtained from any dynamics described by any unitary operator for any states of a larger system.

Jordan, Thomas F., E-mail: tjordan@d.umn.ed [Physics Department, University of Minnesota, Duluth, MN 55812 (United States)

2010-10-15T23:59:59.000Z

259

Qualification of the Joints for the ITER Central Solenoid  

SciTech Connect

The ITER Central Solenoid has 36 interpancake joints, 12 bus joints, and 12 feeder joints in the magnet. The joints are required to have resistance below 4 nOhm at 45 kA at 4.5 K. The US ITER Project Office developed two different types of interpancake joints with some variations in details in order to find a better design, qualify the joints, and establish a fabrication process. We built and tested four samples of the sintered joints and two samples with butt-bonded joints (a total of eight joints). Both designs met the specifications. Results of the joint development, test results, and selection of the baseline design are presented and discussed in the paper. The ITER Central Solenoid (CS) consists of six modules. Each module is composed of six wound hexapancakes and one quadrapancake. The multipancakes are connected electrically and hydraulically by in-line interpancake joints. The joints are located at the outside diameter (OD) of the module. Cable in conduit conductor (CICC) high-current joints are critical elements in the CICC magnets. In addition to low resistivity, the CS joints must fit a space envelope equivalent to the regular conductor cross section and must have low hydraulic impedance and enough structural strength to withstand the hoop and compressive forces during operation, including cycling. This paper is the continuation of the work reported on the intermodule joints.

Martovetsky, N; Berryhill, A; Kenney, S

2011-09-01T23:59:59.000Z

260

Handbook on dynamics of jointed structures.  

Science Conference Proceedings (OSTI)

The problem of understanding and modeling the complicated physics underlying the action and response of the interfaces in typical structures under dynamic loading conditions has occupied researchers for many decades. This handbook presents an integrated approach to the goal of dynamic modeling of typical jointed structures, beginning with a mathematical assessment of experimental or simulation data, development of constitutive models to account for load histories to deformation, establishment of kinematic models coupling to the continuum models, and application of finite element analysis leading to dynamic structural simulation. In addition, formulations are discussed to mitigate the very short simulation time steps that appear to be required in numerical simulation for problems such as this. This handbook satisfies the commitment to DOE that Sandia will develop the technical content and write a Joints Handbook. The content will include: (1) Methods for characterizing the nonlinear stiffness and energy dissipation for typical joints used in mechanical systems and components. (2) The methodology will include practical guidance on experiments, and reduced order models that can be used to characterize joint behavior. (3) Examples for typical bolted and screw joints will be provided.

Ames, Nicoli M.; Lauffer, James P.; Jew, Michael D.; Segalman, Daniel Joseph; Gregory, Danny Lynn; Starr, Michael James; Resor, Brian Ray

2009-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Order and disorder in columnar joints  

E-Print Network (OSTI)

Columnar joints are three-dimensional fracture networks that form in cooling basalt and several other media. The network organizes itself into ordered, mostly hexagonal columns. The same pattern can be observed on a smaller scale in desiccating starch. We show how surface boundary conditions in the desiccation of starch affect the formation of columnar joints. Under constant drying power conditions, we find a power law dependence of columnar cross-sectional area with depth, while under constant drying rate conditions this coarsening is eventually halted. Discontinuous transitions in pattern scale can be observed under constant external conditions, which may prompt a reinterpretation of similar transitions found in basalt. Starch patterns are statistically similar to those found in basalt, suggesting that mature columnar jointing patterns contain inherent residual disorder, but are statistically scale invariant.

Lucas Goehring; Stephen W. Morris

2005-01-03T23:59:59.000Z

262

Delivery Massager: A tool for propagating seismic inversion information into reservoir models  

Science Conference Proceedings (OSTI)

We introduce a new open-source program for transforming inversion data from the open-source Delivery seismic inversion software to industry-standard cornerpoint grid formats suitable for reservoir modelling and flow simulations. The seismic inversion ... Keywords: Bayesian, Cornerpoint grid, Downscaling, Geostatistics, Inversion, Open-source, Seismic, Shared earth model, Stochastic

James Gunning; Michael E. Glinsky; Chris White

2007-05-01T23:59:59.000Z

263

Pacific Northwest National Laboratory The Joint Global Change  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pacific Northwest Pacific Northwest National Laboratory The Joint Global Change The Joint Global Change Research Institute Research Institute Nuclear Power and Stabilizing CO 2 Concentrations Jae Edmonds and Sonny Kim Nuclear Energy Research Advisory Committee Meeting April 15 and 16, 2002 Alexandria, VA Pacific Northwest National Laboratory 2 The Joint Global Change The Joint Global Change Research Institute Research Institute CLIMATE CHANGE Pacific Northwest National Laboratory 3 The Joint Global Change The Joint Global Change Research Institute Research Institute CLIMATE CHANGE Multiple gases * CO 2 (fossil fuel, land-use) * CH 4 (rice paddies, ruminant livestock, landfills, coal mining, oil and gas production, incomplete combustion) * N 2 O (nitrogen fertilizers, industrial processes, other??)

264

Colorado | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

January 9, 2012 January 9, 2012 Transmission Forum Agenda - February 2012 December 21, 2011 CX-007391: Categorical Exclusion Determination Time-lapse Joint Inversion of Geophysical Data and its Application to Geothermal Prospecting GEODE CX(s) Applied: A9, B3.1, B3.6 Date: 12/21/2011 Location(s): Colorado Offices(s): Golden Field Office December 21, 2011 CX-007389: Categorical Exclusion Determination Advances in Hydrogeochemical Indicators for the Discovery of New Geothermal Resources in the Great Basin CX(s) Applied: A9, B3.6 Date: 12/21/2011 Location(s): Colorado Offices(s): Golden Field Office December 20, 2011 CX-007461: Categorical Exclusion Determination High Resolution 3-dimensional Laser Imaging for Inspection, Maintenance, Repair and Operations - Phase II CX(s) Applied: B3.6

265

Categorical Exclusion Determinations: Colorado | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

January 10, 2012 January 10, 2012 CX-007538: Categorical Exclusion Determination Offshore 12 Megawatt Turbine Rotor With Advanced Material and Passive Design Concept CX(s) Applied: A9 Date: 01/10/2012 Location(s): Colorado Offices(s): Golden Field Office December 22, 2011 CX-007754: Categorical Exclusion Determination Routine Site Activities at the Rulison, Colorado, Site CX(s) Applied: B3.1 Date: 12/22/2011 Location(s): Colorado Offices(s): Legacy Management December 21, 2011 CX-007391: Categorical Exclusion Determination Time-lapse Joint Inversion of Geophysical Data and its Application to Geothermal Prospecting GEODE CX(s) Applied: A9, B3.1, B3.6 Date: 12/21/2011 Location(s): Colorado Offices(s): Golden Field Office December 21, 2011 CX-007389: Categorical Exclusion Determination

266

U.S. DEPARTIl1ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!TFR1ITNATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ENT OF ENERGY ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA Dl!TFR1ITNATION RECIPIENT:Colorado School of Mines Page 1 on STATE: CO PROJECT TITLE: Time-lapse Joint Inversion of GEOphysical Data and its Application to Geothermal Prospecting GEODE Funding Opportunity Announcement Number DOE DE-FOA-OOOO522 Procurement Instrument Number OE-EEOOO5513 NEPA Control Number em Number GFO-o005513-Q01 0 Based on my review ofthe information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.IA), 1 have made the following determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 1nformation ga thering, a nalysis, a nd d issem ination Information gathering (including, but not limited to, literature surveys, inventories, site visils, and audits), data analysis

267

u.s. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

. . ,.,,,,. u.s. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION RECIPIENT:Colorado School of Mines Page lof3 STATE: CO PROJECf TITLE: Time-lapse JOint Inversion of GEOphysical Dala and its Application to Geothermal Prospecting GEODE Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DOE DE-FOA-0000522 DE-EE0005513 GFO-OOO5513-001 0 Based on my review o(the information concerning the proposed action, as NEPA Compliance Officer (authorizt'd under DOE Order 451.1A),1 han made the (ollowing determination: ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Infoonatlon gathering, analysIs, and dissemination InformatIOn gathenng (including, but not limited to, literature surveys, Inventories, Site viSits, and audits). data analysIs

268

Joint unsupervised structure discovery and information extraction  

Science Conference Proceedings (OSTI)

In this paper we present JUDIE (Joint Unsupervised Structure Discovery and Information Extraction), a new method for automatically extracting semi-structured data records in the form of continuous text (e.g., bibliographic citations, postal addresses, ... Keywords: data management, information extraction, text segmentation

Eli Cortez; Daniel Oliveira; Altigran S. da Silva; Edleno S. de Moura; Alberto H.F. Laender

2011-06-01T23:59:59.000Z

269

Applications of explosion-welded transition joints  

SciTech Connect

Explosion welding is presented as an alternate process of joining dissimilar metals. The process is compared with brazing, the most appropriate process for comparison, and the bond zone obtained through explosion welding is characterized. Several applications are described where transition joints were made from explosion-bonded dissimilar-metal combinations for subsequent assembly through fusion welding.

Popoff, A.A.; Casey, H.

1977-01-01T23:59:59.000Z

270

Joint with application in electrochemical devices  

DOE Patents (OSTI)

A joint for use in electrochemical devices, such as solid oxide fuel cells (SOFCs), oxygen separators, and hydrogen separators, that will maintain a hermetic seal at operating temperatures of greater than 600.degree. C., despite repeated thermal cycling excess of 600.degree. C. in a hostile operating environment where one side of the joint is continuously exposed to an oxidizing atmosphere and the other side is continuously exposed to a wet reducing gas. The joint is formed of a metal part, a ceramic part, and a flexible gasket. The flexible gasket is metal, but is thinner and more flexible than the metal part. As the joint is heated and cooled, the flexible gasket is configured to flex in response to changes in the relative size of the metal part and the ceramic part brought about by differences in the coefficient of thermal expansion of the metal part and the ceramic part, such that substantially all of the tension created by the differences in the expansion and contraction of the ceramic and metal parts is absorbed and dissipated by flexing the flexible gasket.

Weil, K Scott [Richland, WA; Hardy, John S [Richland, WA

2010-09-14T23:59:59.000Z

271

Temperbead Qualification: Joint P3 Weld Qualification  

Science Conference Proceedings (OSTI)

This report outlines the procedure qualification for a new temperbead weld repair. After an initial failed qualification, the EPRI Repair and Replacement Applications Center (RRAC) teamed with Calvert Cliffs Nuclear Power Plant to perform a joint procedure qualification and, in doing so, assisted the industry by enabling general use of the new weld procedure.

2002-12-29T23:59:59.000Z

272

Joint resummation for heavy quark production  

E-Print Network (OSTI)

We present joint threshold and recoil resummed transverse momentum distributions for heavy quark hadroproduction, at next-to-leading logarithmic accuracy. We study the dependence of these distributions on the production channel, the color configurations and the differences with the pure threshold-resummed distribution.

Andrea Banfi; Eric Laenen

2004-11-18T23:59:59.000Z

273

The Joint Center for Satellite Data Assimilation  

Science Conference Proceedings (OSTI)

The Joint Center for Satellite Data Assimilation (JCSDA) was established by NASA and NOAA in 2001, with Department of Defense (DoD) agencies becoming partners in 2002. The goal of JCSDA is to accelerate the use of observations from Earth-orbiting ...

John Le Marshall; Louis Uccellini; Franco Einaudi; Lars-Peters Riishojgaard; Marie Colton; Fuzhong Weng; James G. Yoe; Simon Chang; Patricia Phoebus; Michael Uhart; Stephen Lord

2007-03-01T23:59:59.000Z

274

Jointly organised by HKU CIVIL ENGRG. DEPT.  

E-Print Network (OSTI)

SEMINAR Jointly organised by and HKU CIVIL ENGRG. DEPT. Centre for Infrastructure and Construction men first walked on the moon yet, in this age of rapid technological development, we persist in undertaking the task of installing and maintaining our underground utility services using what is essentially

Tam, Vincent W. L.

275

JOINT DEGREE PROGRAM LEADING TO THE  

E-Print Network (OSTI)

programs prior to beginning their graduate work. If a student decides to enter the combined program after with advanced work may be admitted to the Graduate School through the Graduate Program in Urban PlanningJOINT DEGREE PROGRAM LEADING TO THE MASTER OF URBAN PLANNING AND MASTER OF ARTS IN GEOGRAPHY DEGREE

Peterson, Blake R.

276

Joint Distributions for Interacting Fluid Queues  

Science Conference Proceedings (OSTI)

Motivated by recent traffic control models in ATM systems, we analyse three closely related systems of fluid queues, each consisting of two consecutive reservoirs, in which the first reservoir is fed by a two-state (on and off) Markov source. The first ... Keywords: feedback, fluid queue, joint distribution, stationary distribution, tandem queue, traffic shaper

Dirk P. Kroese; Werner R. W. Scheinhardt

2001-03-01T23:59:59.000Z

277

A Target-Oriented Magnetotelluric Inversion Approach For Characterizing The  

Open Energy Info (EERE)

Target-Oriented Magnetotelluric Inversion Approach For Characterizing The Target-Oriented Magnetotelluric Inversion Approach For Characterizing The Low Enthalpy Gross Schonebeck Geothermal Reservoir Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Target-Oriented Magnetotelluric Inversion Approach For Characterizing The Low Enthalpy Gross Schonebeck Geothermal Reservoir Details Activities (0) Areas (0) Regions (0) Abstract: Electrical conductivity is a key parameter for the exploration and characterization of geothermal reservoirs as hot mineralized formation water of active geothermal areas usually exhibits significantly higher conductivity than the surrounding host rock. Here we present results of a magnetotelluric (MT) exploration experiment carried out in the vicinity of the Gross Schonebeck geothermal test site in Northern Germany, where a

278

Development of inverse modeling techniques for geothermal applications  

DOE Green Energy (OSTI)

We have developed inverse modeling capabilities for the non-isothermal, multiphase, multicomponent numerical simulator TOUGH2 to facilitate automatic history matching and parameter estimation based on data obtained during testing and exploitation of geothermal fields. The TOUGH2 code allows one to estimate TOUGH2 input parameters based on any type of observation for which a corresponding simulation output can be calculated. In addition, a detailed residual and error analysis is performed, and the uncertainty of model predictions can be evaluated. One of the advantages of inverse modeling is that it overcomes the time and labor intensive tedium of trial- and error model calibration. Furthermore, the estimated parameters refer directly to the numerical model used for the subsequent predictions and optimization studies. This paper describes the methodology of inverse modeling and demonstrates an application of the method to data from a synthetic geothermal reservoir. We also illustrate its use for the optimization of fluid reinjection into a partly depleted reservoir.

Finsterle, S.; Pruess, K.

1997-03-01T23:59:59.000Z

279

Stochastic spectral methods for efficient Bayesian solution of inverse problems  

SciTech Connect

We present a reformulation of the Bayesian approach to inverse problems, that seeks to accelerate Bayesian inference by using polynomial chaos (PC) expansions to represent random variables. Evaluation of integrals over the unknown parameter space is recast, more efficiently, as Monte Carlo sampling of the random variables underlying the PC expansion. We evaluate the utility of this technique on a transient diffusion problem arising in contaminant source inversion. The accuracy of posterior estimates is examined with respect to the order of the PC representation, the choice of PC basis, and the decomposition of the support of the prior. The computational cost of the new scheme shows significant gains over direct sampling.

Marzouk, Youssef M. [Sandia National Laboratories, Livermore, CA 94551 (United States)]. E-mail: ymarz@alum.mit.edu; Najm, Habib N. [Sandia National Laboratories, Livermore, CA 94551 (United States)]. E-mail: hnnajm@sandia.gov; Rahn, Larry A. [Sandia National Laboratories, Livermore, CA 94551 (United States)]. E-mail: rahn@sandia.gov

2007-06-10T23:59:59.000Z

280

Stochastic spectral methods for efficient Bayesian solution of inverse problems.  

SciTech Connect

We present a reformulation of the Bayesian approach to inverse problems, that seeks to accelerate Bayesian inference by using polynomial chaos (PC) expansions to represent random variables. Evaluation of integrals over the unknown parameter space is recast, more efficiently, as Monte Carlo sampling of the random variables underlying the PC expansion. We evaluate the utility of this technique on a transient diffusion problem arising in contaminant source inversion. The accuracy of posterior estimates is examined with respect to the order of the PC representation, the choice of PC basis, and the decomposition of the support of the prior. The computational cost of the new scheme shows significant gains over direct sampling.

Marzouk, Youssef M.; Najm, Habib N.; Rahn, Larry A.

2005-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Variation in joint fluid composition and its effect on the tribology of replacement joint articulation  

E-Print Network (OSTI)

Polyethylene wear is a significant clinical problem limiting the long-term survival of joint replacement prostheses, particularly in total hip arthroplasty (THA) and total knee arthroplasty (TKA). Although the tribology ...

Mazzucco, Daniel Clarke, 1976-

2003-01-01T23:59:59.000Z

282

Addressing the Need for Alternative Transportation Fuels: The Joint BioEnergy Institute  

E-Print Network (OSTI)

Fuels: The Joint BioEnergy Institute Harvey W. Blanch †,‡,§,¶, * † Joint BioEnergy Institute, ‡ Department of Chemicalbiomass monomers. The Joint BioEnergy Institute (JBEI) is a

Blanch, Harvey

2010-01-01T23:59:59.000Z

283

PP-82-3 The Joint Owners of the Highgate Interconnection Facilities...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 The Joint Owners of the Highgate Interconnection Facilities PP-82-3 The Joint Owners of the Highgate Interconnection Facilities Presidential Permit authorizing The Joint Owners...

284

Alternative Fuels Data Center: Joint Use of Government Fueling  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Joint Use of Joint Use of Government Fueling Infrastructure to someone by E-mail Share Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on Facebook Tweet about Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on Twitter Bookmark Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on Google Bookmark Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on Delicious Rank Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on Digg Find More places to share Alternative Fuels Data Center: Joint Use of Government Fueling Infrastructure on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

285

Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Fuel Cell Bus Joint Fuel Cell Bus Workshop to someone by E-mail Share Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on Facebook Tweet about Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on Twitter Bookmark Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on Google Bookmark Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on Delicious Rank Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on Digg Find More places to share Fuel Cell Technologies Office: Joint Fuel Cell Bus Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations Multimedia Conferences & Meetings Annual Merit Review Proceedings Workshop & Meeting Proceedings Webinars

286

Evaluation of Pipe-Type Cable Joint Restraint Systems  

Science Conference Proceedings (OSTI)

Joints in underground transmission pipe-type cables must be designed to accommodate the thermomechanical forces created as a cable heats and cools in operation. This report details an investigation of several joint restraining designs and recommends one design.

1990-04-06T23:59:59.000Z

287

Electric Vehicle Preparedness - Task 2: Identification of Joint...  

NLE Websites -- All DOE Office Websites (Extended Search)

PROGRAM Electric Vehicle Preparedness Task 2: Identification of Joint Base Lewis McChord Vehicles for Installation of Data Loggers June 2013 Prepared for: Joint Base Lewis McChord...

288

ORISE: Providing Support to the DOE Joint Information Center  

NLE Websites -- All DOE Office Websites (Extended Search)

ORISE Provides Support to DOE's Oak Ridge Office Joint Information Center (JIC) In the event of an emergency, the U.S. Department of Energy (DOE) Oak Ridge Office (ORO) Joint...

289

YAKIMA BASIN JOINT BOARD A Partnership of Public Entities Promoting  

E-Print Network (OSTI)

YAKIMA BASIN JOINT BOARD A Partnership of Public Entities Promoting the Multiple Uses of the Yakima for the opportunity to comment. Sincerely, Jim Trull, President Yakima Basin Joint Board #12;

290

Dual position locking joint design for a medical walker  

E-Print Network (OSTI)

In this thesis we analyzed a joint created for a medical walker currently in the prototyping stage of development. The walker is designed to help a user stand up from a seated position. The joint holds two legs of the ...

Beecher, Eric M

2010-01-01T23:59:59.000Z

291

Joint Center for Energy Storage Research | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Center for Energy Storage Research Share Description The Joint Center for Energy Storage Research (JCESR) is a major public-private research partnership that integrates U.S....

292

NIST, NASA Launch Joint Effort to Develop New Climate ...  

Science Conference Proceedings (OSTI)

NIST, NASA Launch Joint Effort to Develop New Climate Satellites. For ... space. The balance between them affects the climate. ...

2010-10-05T23:59:59.000Z

293

Joint Quantum Institute Created by University of Maryland ...  

Science Conference Proceedings (OSTI)

... establishing the Joint Quantum Institute at the University of Maryland, College Park. Credit: Thai Nguyen, University of Maryland. ...

2012-02-29T23:59:59.000Z

294

Microbial Genomics Data from the DOE Joint Genome Institute (JGI)  

DOE Data Explorer (OSTI)

As of March 2008, The Joint Genome Institute has released 296 Prokaryotic microbial sites, with 216 in finished status.

295

The Paper Industry: Strategic Alliances, Joint Ventures, and  

E-Print Network (OSTI)

The Paper Industry: Strategic Alliances, Joint Ventures, and Electronic Commerce Are Reshaping Our may take the form of a collaborative effort, licensing of technology, or joint venture (Berryman, 1998 technology is affected when one company licenses its production or service methods to another firm. A joint

296

Ring Bolted Joint NSTX-CALC-132-11  

E-Print Network (OSTI)

NSTX Ring Bolted Joint NSTX-CALC-132-11 Rev 0 March 2011 Prepared By assemblies which are connected through a stepped lap joint with four stainless steel bolts. These bolts, must provide sufficient compressive force, through combined preload, to resist the joint separation for all

Princeton Plasma Physics Laboratory

297

JOINT BOX-CONSTRAINT AND DEREGULARIZATION IN MULTIUSER Y. Zakharov  

E-Print Network (OSTI)

JOINT BOX-CONSTRAINT AND DEREGULARIZATION IN MULTIUSER DETECTION Y. Zakharov , J. Luo , and C- ciation (PDA) detectors. We propose a novel iterative multiuser de- tection technique based on joint technique is based on joint deregularized and box-constrained solution to quadratic op- timization

298

FY11 Joint Research Target: Status and Planning on  

E-Print Network (OSTI)

FY11 Joint Research Target: Status and Planning on Alcator C-Mod Jerry Hughes Including slides from: (1) ECC Meeting on FY2010 and FY2011 Joint Research Milestones, April 12, 2010 (2) Alcator C-Mod FY10 capability for the H-mode pedestal is the subject of the FY11 JRT Statement of the FY2011 FES Joint Theory

Princeton Plasma Physics Laboratory

299

3D porosity prediction from seismic inversion and neural networks  

Science Conference Proceedings (OSTI)

In this work, we address the problem of transforming seismic reflection data into an intrinsic rock property model. Specifically, we present an application of a methodology that allows interpreters to obtain effective porosity 3D maps from post-stack ... Keywords: Feed-forward neural network, Matlab, Reservoir characterization, Seismic inversion

Emilson Pereira Leite; Alexandre Campane Vidal

2011-08-01T23:59:59.000Z

300

Inversion of Newberry Volcano high-resolution traveltime residuals  

SciTech Connect

Inversion of the 1984 traveltime data from the array at Newberry Crater was accomplished using a variant of the method presented by Aki and others (1973). Five-hundred-sixty-five traveltime observations for Pg and a deeper reflection, weighted by their variance estimates, were included in the inversion. Azimuths from receiver-to-source range from 80 to 280. The initial-velocity model for the inversion has four layers. The top layer, starting at the surface and extending to an elevation of 1300 meters above sea level, had a P-velocity of 2.5 km/s. There are three layers below this one, each 1500-m thick, with P-velocities of 4.0, 4.6, and 5.2 km/s. The predominant feature in the inversion result in the upper two layers (surface to 200-m below sea level), is the ring of high velocities coincident with the caldera ring-fracture system. This high-velocity ring is up to 11% faster than the average for these two layers. In these layers velocities are a few percent slower than average in the center of the caldera and range from 5 to 10% slower outside the caldera to the south, east, and north. In the third layer (-200 to 1700 m elevation), the magnitude of the high-velocity anomaly around the ring-fracture system is reduced, but the bin in the center of the caldera is nearly 9% slower than the layer average.

Stauber, D.A.

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Ph.D.Thesis Binary inversion of gravity  

E-Print Network (OSTI)

Ph.D.Thesis Binary inversion of gravity data for salt imaging Richard A. Krahenbuhl Center for Gravity, Electrical & Magnetic Studies Colorado School of Mines Department of Geophysics Colorado School of gravity data for salt imaging Richard A. Krahenbuhl Center for Gravity, Electrical & Magnetic Studies

302

Adaptive and reverse adaptive responses for chromosomal inversions...  

NLE Websites -- All DOE Office Websites (Extended Search)

a response which can protect from inversion induction within four hours of high dose irradiation. 0 1 2 3 4 5 6 0 0.01 1 1000 1000+0.01 1000+1 Dose (mGy) M e a n in v e r s io n fr...

303

Intelligent seismic inversion workflow for high-resolution reservoir characterization  

Science Conference Proceedings (OSTI)

Developing a geological model is the first and a very important step during the reservoir simulation and modeling process. The geological model usually represents our best interpretation of the reservoir characteristics that extends beyond the well where ... Keywords: Buffalo Valley Field, Neural networks, Reservoir characterization, Seismic inversion

E. Artun; S. Mohaghegh

2011-02-01T23:59:59.000Z

304

Refactoring Composite to Visitor and Inverse Transformation in Java  

E-Print Network (OSTI)

We describe how to use refactoring tools to transform a Java program conforming to the Composite design pattern into a program conforming to the Visitor design pattern with the same external behavior. We also describe the inverse transformation. We use the refactoring tools provided by IntelliJ IDEA and Eclipse.

Ajouli, Akram

2011-01-01T23:59:59.000Z

305

Molecular pulses: Population inversion with positively chirped short pulses  

E-Print Network (OSTI)

Molecular pulses: Population inversion with positively chirped short pulses Jianshu Cao of molecular systems can be achieved with intense positively chirped broadband laser pulses. To provide and a four-level model is designed to demonstrate for molecular systems the correlation between the sign

Cao, Jianshu

306

Move-to-Front, Distance Coding, and Inversion Frequencies revisited  

Science Conference Proceedings (OSTI)

Move-to-Front, Distance Coding and Inversion Frequencies are three simple and effective techniques used to process the output of the Burrows-Wheeler Transform. In this paper we provide the first complete comparative analyses of these techniques, establishing ... Keywords: Burrows-Wheeler Transform, Data Compression, Empirical entropy

Travis Gagie; Giovanni Manzini

2010-06-01T23:59:59.000Z

307

On a class of inverse electrostatic and elasticity problems  

E-Print Network (OSTI)

We study the inverse electrostatic and elasticity problems associated with Poisson and Navier equations. The uniqueness of solutions of these problems is proved for piecewise constant electric charge and internal stress distributions having a checkered structure: they are constant on rectangular blocks. Such distributions appear naturally in practical applications. We also discuss computational challenges arising in the numerical implementation of our method.

Andrei Artemev; Leonid Parnovski; Iosif Polterovich

2012-09-29T23:59:59.000Z

308

DYNAMIC INVERSE PROBLEM IN A WEAKLY LATERALLY INHOMOGENEOUS MEDIUM.  

E-Print Network (OSTI)

the earth's crust which contain gas, oil or other minerals as well as determination of their physical costs and outcomes in exploitation. In practice, in e.g. oil exploration and seismology this inverse applications, a pure layered structure occurs rare. However, in many cases in seismology and oil exploration

309

Evaluation of Medium-Voltage Cable Joints: Single-Phase, Three-Phase, and Branch Transition Joints  

Science Conference Proceedings (OSTI)

This report evaluates three single-phase transition joints, three three-phase trifurcating transition joints, and one three-phase trifurcating transition branch joint between ethylene propylene rubber (EPR) and paper-insulated lead-covered (PILC) 15-kV cables. Among installation parameters evaluated are time to install, complexity, skill required, ease of assembly, margin for error, and space needed for joint assembly and fabrication.

2003-05-19T23:59:59.000Z

310

Sensitivity study on hydraulic well testing inversion using simulated annealing  

DOE Green Energy (OSTI)

For environmental remediation, management of nuclear waste disposal, or geothermal reservoir engineering, it is very important to evaluate the permeabilities, spacing, and sizes of the subsurface fractures which control ground water flow. Cluster variable aperture (CVA) simulated annealing has been used as an inversion technique to construct fluid flow models of fractured formations based on transient pressure data from hydraulic tests. A two-dimensional fracture network system is represented as a filled regular lattice of fracture elements. The algorithm iteratively changes an aperture of cluster of fracture elements, which are chosen randomly from a list of discrete apertures, to improve the match to observed pressure transients. The size of the clusters is held constant throughout the iterations. Sensitivity studies using simple fracture models with eight wells show that, in general, it is necessary to conduct interference tests using at least three different wells as pumping well in order to reconstruct the fracture network with a transmissivity contrast of one order of magnitude, particularly when the cluster size is not known a priori. Because hydraulic inversion is inherently non-unique, it is important to utilize additional information. The authors investigated the relationship between the scale of heterogeneity and the optimum cluster size (and its shape) to enhance the reliability and convergence of the inversion. It appears that the cluster size corresponding to about 20--40 % of the practical range of the spatial correlation is optimal. Inversion results of the Raymond test site data are also presented and the practical range of spatial correlation is evaluated to be about 5--10 m from the optimal cluster size in the inversion.

Nakao, Shinsuke; Najita, J.; Karasaki, Kenzi

1997-11-01T23:59:59.000Z

311

Joint Outreach Task Group (JOTG) Calendar: June  

NLE Websites -- All DOE Office Websites (Extended Search)

Former Worker Program (FWP) Home Covered Sites/Populations › Construction Worker Screening Projects › Production Worker Screening Projects › Supplemental Screening Program › Beryllium Vendor Screening Program Upcoming Events Program Implementation Outreach Medical Screening - Conventional Medical Screening - Early Lung Cancer Detection Communicating Results Protecting Participant Information Sharing De-identified Data Chronic Beryllium Disease Awareness Joint Outreach Task Group (JOTG) Worker Testimonials Contact Us FWP Scientific Publications FWP Documents Related Links Office of Health and Safety Home Page HSS Logo Joint Outreach Task Group Calendar: June 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 26 27 28 29 30 31 1 2 3 4 FWP Event Mound Miamisburg, OH

312

U.S.-Sweden Joint PHEV Research  

NLE Websites -- All DOE Office Websites (Extended Search)

to jointly develop new plug-in to jointly develop new plug-in hybrid vehicle (PHEV) technology and accelerate its consumer acceptance and commercialization, the U.S. Department of Energy (DOE) and Sweden signed a Memorandum of Understanding (MOU) in July for a one year, $1 million cost-sharing agreement to be equally funded by DOE and the Swedish Energy Agency. Through contacts developed over many years conducting international technology assessment for the Department of Energy, Argonne National Laboratory initiated the MOU, which was signed by DOE Assistant Secretary Alexander Karsner and Director General of the Swedish Energy Agency Tomas KĂĄberger, on the Swedish island of Gotland. The ceremony included comments by Swedish Deputy Prime Minister Maud Olofsson and U.S. Ambassador to Sweden Michael

313

Transfer maps and nonexistence of joint determinant.  

E-Print Network (OSTI)

Transfer Maps, sometimes called norm maps, for Milnor's $K$-theory were first defined by Bass and Tate (1972) for simple extensions of fields via tame symbol and Weil's reciprocity law, but their functoriality had not been settled until Kato (1980). On the other hand, functorial transfer maps for the Goodwillie group are easily defined. We show that these natural transfer maps actually agree with the classical but difficult transfer maps by Bass and Tate. With this result, we build an isomorphism from the Goodwillie groups to Milnor's $K$-groups of fields, which in turn provides a description of joint determinants for the commuting invertible matrices. In particular, we explicitly determine certain joint determinants for the commuting invertible matrices over a finite field, the field of rational numbers, real numbers and complex numbers into the respective group of units of given field.

Sung Myung

314

Joint quantum measurements with minimum uncertainty  

E-Print Network (OSTI)

Quantum physics constrains the accuracy of joint measurements of incompatible observables. Here we test tight measurement-uncertainty relations using single photons. We implement two independent, idealized uncertainty-estimation methods, the 3-state method and the weak-measurement method, and adapt them to realistic experimental conditions. Exceptional quantum state fidelities of up to 0.99998(6) allow us to verge upon the fundamental limits of measurement uncertainty.

Martin Ringbauer; Devon N. Biggerstaff; Matthew A. Broome; Alessandro Fedrizzi; Cyril Branciard; Andrew G. White

2013-08-26T23:59:59.000Z

315

Physical metallurgy issues in solder joint performance  

Science Conference Proceedings (OSTI)

In order to simulate solder fabrication, a simplified axisymmetric ''microcell'' model of the assembly was used. Results of constant temperature compressive creep experiments were fitted to the Sherby-Dorn steady state creep equation for use in the analyses. Experimental studies have been performed to evaluate the effect of material layup, solder joint thickness, and number of thermal cycles on the tensile strength of solder bonds. (LEW)

Stephens, J.J. Jr.; Bourcier, R.J.

1986-01-01T23:59:59.000Z

316

Joint reconstructions of CO2 plumes using a Markov Chain Monte Carlo approach  

SciTech Connect

We describe a stochastic inversion method for mapping subsurface regions where CO{sub 2} saturation is changing. The technique combines prior information with measurements of injected CO{sub 2} volume, reservoir deformation and electrical resistivity. Bayesian inference and a Metropolis simulation algorithm form the basis for this approach. The method can (a) jointly reconstruct disparate data types such as surface or subsurface tilt, electrical resistivity, and injected CO{sub 2} volume measurements, (b) provide quantitative measures of the result uncertainty, (c) identify competing models when the available data are insufficient to definitively identify a single optimal model and (d) rank the alternative models based on how well they fit available data. We use measurements collected during CO{sub 2} injection for enhanced oil recovery to illustrate the method's performance. The stochastic inversions provide estimates of the most probable location, shape, volume of the plume and most likely CO{sub 2} saturation. The results suggest that the method can reconstruct data with poor signal to noise ratio.

Ramirez, A; Friedmann, S J; Foxall, W; Dyer, K; Kirkendall, B; Aines, R; Daily, W

2006-04-07T23:59:59.000Z

317

Look at this: the neural correlates of initiating and responding to bids for joint attention  

E-Print Network (OSTI)

When engaging in joint attention, one person directs another person's attention to an object (Initiating Joint Attention, IJA), and the second person's attention follows (Responding to Joint Attention, RJA). As such, joint ...

Redcay, Elizabeth

318

Perestroika, Soviet oil, and joint ventures  

SciTech Connect

Glaznost, the freedom of expression in both the public and private sectors of the Soviet Union, has rapidly transformed the country form a largely isolated and closed society to one that is rapidly becoming more cosmopolitan and open to the West. Now that the Soviet Union is moving toward a free-market economy, a number of new laws are being generated to create a favorable environment for Western investment, especially joint ventures. First, crude oil sales have provided over 75% of much-needed hard currency, and oil has been the principal barter for manufactured goods produced in eastern Europe. Second, joint oil ventures with Western companies can reverse declining production levels and provide sufficient stimulus to turn around the economic recession. The Soviet Union has a very large inventory of discovered but undeveloped oil and gas fields. Most of these fields are difficult for the Soviets to produce technically, financially, and environmentally safely, and they are actively seeking appropriate Western partners. From an exploration point of view, the Soviet Union has probably the largest number of undrilled and highly prospective oil basins, which may replenish declining reserves in the West. Finally, the Soviet Union represents in the long term a large unsaturated market eager to absorb the surplus of goods and services in the Western world. Again, joint oil ventures could provide the convertible currency to increase East-West trade.

Churkin, M. Jr.

1991-08-01T23:59:59.000Z

319

Joint Global Change Research Institute | Open Energy Information  

Open Energy Info (EERE)

Global Change Research Institute Global Change Research Institute Jump to: navigation, search Logo: Joint Global Change Research Institute Name Joint Global Change Research Institute Agency/Company /Organization Pacific Northwest National Laboratory Sector Energy, Land Focus Area Energy Efficiency Topics Policies/deployment programs, Resource assessment, Pathways analysis Website http://www.globalchange.umd.ed References Global Change Research Institute [1] Abstract The Joint Global Change Research Institute (JGCRI) houses an interdisciplinary team dedicated to understanding the problems of global climate change and their potential solutions. Joint Institute staff bring decades of experience and expertise to bear in science, technology, economics, and policy. "The Joint Global Change Research Institute (JGCRI) houses an

320

Application of inverse modeling to geothermal reservoir simulation  

DOE Green Energy (OSTI)

The authors have developed inverse modeling capabilities for the non-isothermal, multiphase, multicomponent numerical simulator TOUGH2 to facilitate automatic history matching and parameter estimation based on data obtained during testing and exploitation of geothermal fields.The ITOUGH2 code allows one to estimate TOUGH2 input parameters based on any type of observation for which a corresponding simulation output can be calculated. Furthermore, a detailed residual and error analysis is performed, and the uncertainty of model predictions can be evaluated. Automatic history matching using ITOUGH2 is robust and efficient so that model parameters affecting geothermal field performance can reliably be estimated based on a variety of field measurements such as pressures, temperatures, flow rates, and enthalpies. The paper describes the methodology of inverse modeling and provides a detailed discussion of sample problems to demonstrate the application of the method to data from geothermal reservoirs.

Finsterle, S.; Pruess, K. [Lawrence Berkeley National Lab., CA (United States). Earth Sciences Div.; Bullivant, D.P.; O`Sullivan, M.J. [Univ. of Auckland (New Zealand). Dept. of Engineering Science

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Radiative inverse seesaw neutrino mass and dark matter  

SciTech Connect

Seesaw mechanism provides a natural explanation of light neutrino masses through suppression of heavy seesaw scale. In inverse seesaw models the seesaw scale can be much lower than that in the usual seesaw models. If terms inducing seesaw masses are further induced by loop corrections, the seesaw scale can be lowered to be in the range probed by experiments at the LHC without fine tuning. This talk, presented by X-G He, discuss models constructed in a recent preprint by us (arxiv:201207.6308) in which neutrino masses are generated at two loop level through inverse seesaw mechanism. These models also naturally have dark matter candidates. Although the recent data from Xenon100 put stringent constraint on the models, they can be consistent with data on neutrino masses, mixing, dark matter relic density and direct detection.

Guo Gang [INPAC, Department of Physics and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University, Shanghai (China); He Xiaogang [INPAC, Department of Physics and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University, Shanghai (China) and Department of Physics, National Tsing Hua University, and NCTS, Hsinchu, Taiwan (China); Li Guannan [INPAC, Department of Physics and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University, Shanghai, Taiwan (China)

2013-05-23T23:59:59.000Z

322

Inverse variational problem for non-standard Lagrangians  

E-Print Network (OSTI)

The non-standard Lagrangians (NSLs) for dissipative-like dynamical systems were introduced in an ad hoc fashion rather than being derived from the solution of the inverse problem of variational calculus. We begin with the first integral of the equation of motion and solve the associated inverse problem to obtain some of the existing results for NSLs. In addition, we provide a number of alternative Lagrangian representations. The case studies envisaged by us include (i) the usual modified Emden-type equation, (ii) Emden-type equation with dissipative term quadratic in velocity and (iii) Lokta-Volterra model. We point out that our method is quite general for applications to other physical systems.

Aparna Saha; B Talukdar

2013-05-28T23:59:59.000Z

323

The use of Bayesian inversion to resolve plasma equilibrium  

SciTech Connect

Recently, Bayesian probability theory has been used at a number of experiments to fold uncertainties and interdependencies in the diagnostic data and forward models, together with prior knowledge of the state of the plasma, to increase accuracy of inferred physics variables. A new probabilistic framework, MINERVA, based on Bayesian graphical models, has been used at JET and W7-AS to yield predictions of internal magnetic structure. A feature of the framework is the Bayesian inversion for poloidal magnetic flux without the need for an explicit equilibrium assumption. Building on this, we discuss results from a new project to develop Bayesian inversion tools that aim to (1) distinguish between competing equilibrium theories, which capture different physics, using the MAST spherical tokamak, and (2) test the predictions of MHD theory, particularly mode structure, using the H-1 Heliac. Specifically, we report on correction of the motional Stark effect, pickup coils, flux-loop constrained Bayesian inferred equilibrium for varying toroidal flux.

Hole, M. J.; Nessi, G. von; Pretty, D.; Howard, J.; Blackwell, B. [Research School of Physics and Engineering, Australian National University, ACT 0200 (Australia); Svensson, J. [Max Planck Institute for Plasma Physics, Teilinstitut Greifswald D17491 (Germany); Appel, L. C. [Euratom/CCFE, Culham Science Centre, Abingdon, Oxon OX143DB (United Kingdom)

2010-10-15T23:59:59.000Z

324

Joint electric power alternatives study. Appendix G. Joint parallel nuclear alternatives study for Russia. Final report  

Science Conference Proceedings (OSTI)

The Joint Parallel Nuclear Alternatives Study for Russia (JPNAS) is a parallel study to the Joint Electric Power Alternatives Study (JEPAS). The JPNAS assessed the costs of enhancing the safety level of Russian nuclear power plants (NPPs), decommissioning of RBMK-1000 and first generation VVER-440 units, completion of NPP construction, NPP repowering into fossil fuel plants, and construction of new generation NPPs. In the framework of the JEPAS, the JPNAS provides data on the nuclear sector which is needed to formulate an integrated resources plan and schedule for investments for the development of Russia`s power sector.

NONE

1995-06-01T23:59:59.000Z

325

Effects of Inversion Height and Surface Heat Flux on Downslope Windstorms  

Science Conference Proceedings (OSTI)

Simulations are presented focusing on the role of temperature inversions in controlling the formation and strength of downslope wind storms. Three mechanisms are examined depending on the relative height of the inversion with respect to the ...

Craig M. Smith; Eric D. Skyllingstad

2011-12-01T23:59:59.000Z

326

Skill in an Inversion Solution: CONVEX-91 Hydrographic Results Compared with ADCP Measurements  

Science Conference Proceedings (OSTI)

This paper demonstrates skill in simple linear inversion solutions in two ways: first, qualitatively, by showing that the inversion method can put in place a known feature of the deep circulation of the study region when initialized with ...

Sheldon Bacon

1994-12-01T23:59:59.000Z

327

Analysis of the Impact of Model Nonlinearities in Inverse Problem Solving  

Science Conference Proceedings (OSTI)

In this study, the relationship between nonlinear model properties and inverse problem solutions is analyzed using a numerical technique based on the inverse problem theory formulated by Mosegaard and Tarantola. According to this theory, the ...

T. Vukicevic; D. Posselt

2008-09-01T23:59:59.000Z

328

Parameterization of Inversion Breakup in Idealized Valleys. Part II: Thermodynamic Model  

Science Conference Proceedings (OSTI)

A simple thermodynamic parameterization based on a modified version of the Whiteman and McKee inversion destruction model is presented to simulate the evolution of vertical temperature structure during the inversion breakup period in idealized ...

N. M. Zoumakis; G. A. Efstathiou

2006-04-01T23:59:59.000Z

329

Data Assimilation and Inverse Methods in Terms of a Probabilistic Formulation  

Science Conference Proceedings (OSTI)

The weak constraint inverse for nonlinear dynamical models is discussed and derived in term of a probabilistic formulation. The well-known result that for Gaussian error statistics the minimum of the weak constraint inverse is equal to the ...

Peter Jan van Leeuwen; Geir Evensen

1996-12-01T23:59:59.000Z

330

Parameterization of Inversion Breakup in Idealized Valleys. Part I: The Adjustable Model Parameters  

Science Conference Proceedings (OSTI)

The factors that affect the atmospheric energy budget approach used in the thermodynamic valley inversion destruction model of Whiteman and McKee are investigated theoretically. The height at which the sinking inversion top meets the rising ...

N. M. Zoumakis; G. A. Efstathiou

2006-04-01T23:59:59.000Z

331

Simulated synchrotron and Inverse Compton emission from Pulsar Wind Nebulae  

E-Print Network (OSTI)

We present a complete set of diagnostic tools aimed at reproducing synthetic non-thermal (synchrotron and/or Inverse Compton, IC) emissivity, integrated flux energy, polarization and spectral index simulated maps in comparison to observations. The time dependent relativistic magnetohydrodynamic (RMHD) equations are solved with a shock capturing code together with the evolution of the maximum particles energy. Applications to Pulsar Wind Nebulae (PWNe) are shown.

Volpi, Delia; Amato, Elena; Bucciantini, Niccolo

2007-01-01T23:59:59.000Z

332

The Inverse Problem of Remote Neutrino Diagnostics of Intrareactor Processes  

E-Print Network (OSTI)

Using the well-known experimental data the inverse problem of neutrino diagnostics of reactor core is considered. The solution of this problem makes it possible to determine distantly the current value of nuclear density of each nuclear fuel components with known accuracy and also opens up the possibility for the development of neutrino online technology of temporal evolution of nuclear fuel isotopic structure and reactor power.

V. D. Rusov; T. N. Zelentsova; V. A. Tarasov; D. A. Litvinov

2004-03-19T23:59:59.000Z

333

Bayesian Uncertainty Quantification for Large Scale Spatial Inverse Problems  

E-Print Network (OSTI)

We considered a Bayesian approach to nonlinear inverse problems in which the unknown quantity is a high dimension spatial field. The Bayesian approach contains a natural mechanism for regularization in the form of prior information, can incorporate information from heterogeneous sources and provides a quantitative assessment of uncertainty in the inverse solution. The Bayesian setting casts the inverse solution as a posterior probability distribution over the model parameters. Karhunen-Lo'eve expansion and Discrete Cosine transform were used for dimension reduction of the random spatial field. Furthermore, we used a hierarchical Bayes model to inject multiscale data in the modeling framework. In this Bayesian framework, we have shown that this inverse problem is well-posed by proving that the posterior measure is Lipschitz continuous with respect to the data in total variation norm. The need for multiple evaluations of the forward model on a high dimension spatial field (e.g. in the context of MCMC) together with the high dimensionality of the posterior, results in many computation challenges. We developed two-stage reversible jump MCMC method which has the ability to screen the bad proposals in the first inexpensive stage. Channelized spatial fields were represented by facies boundaries and variogram-based spatial fields within each facies. Using level-set based approach, the shape of the channel boundaries was updated with dynamic data using a Bayesian hierarchical model where the number of points representing the channel boundaries is assumed to be unknown. Statistical emulators on a large scale spatial field were introduced to avoid the expensive likelihood calculation, which contains the forward simulator, at each iteration of the MCMC step. To build the emulator, the original spatial field was represented by a low dimensional parameterization using Discrete Cosine Transform (DCT), then the Bayesian approach to multivariate adaptive regression spline (BMARS) was used to emulate the simulator. Various numerical results were presented by analyzing simulated as well as real data.

Mondal, Anirban

2011-08-01T23:59:59.000Z

334

A GPU-COMPUTING APPROACH TO SOLAR STOKES PROFILE INVERSION  

Science Conference Proceedings (OSTI)

We present a new computational approach to the inversion of solar photospheric Stokes polarization profiles, under the Milne-Eddington model, for vector magnetography. Our code, named GENESIS, employs multi-threaded parallel-processing techniques to harness the computing power of graphics processing units (GPUs), along with algorithms designed to exploit the inherent parallelism of the Stokes inversion problem. Using a genetic algorithm (GA) engineered specifically for use with a GPU, we produce full-disk maps of the photospheric vector magnetic field from polarized spectral line observations recorded by the Synoptic Optical Long-term Investigations of the Sun (SOLIS) Vector Spectromagnetograph (VSM) instrument. We show the advantages of pairing a population-parallel GA with data-parallel GPU-computing techniques, and present an overview of the Stokes inversion problem, including a description of our adaptation to the GPU-computing paradigm. Full-disk vector magnetograms derived by this method are shown using SOLIS/VSM data observed on 2008 March 28 at 15:45 UT.

Harker, Brian J. [National Solar Observatory, Tucson, AZ 85719 (United States); Mighell, Kenneth J., E-mail: bharker@nso.edu, E-mail: mighell@noao.edu [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States)

2012-09-20T23:59:59.000Z

335

Adaptive fuzzy model based inverse controller design using BB-BC optimization algorithm  

Science Conference Proceedings (OSTI)

The use of inverse system model as a controller might be an efficient way in controlling non-linear systems. It is also a known fact that fuzzy logic modeling is a powerful tool in representing nonlinear systems. Therefore, inverse fuzzy model can be ... Keywords: Big Bang-Big Crunch optimization, Fuzzy logic controller, Fuzzy model inversion, Heat transfer process, Inverse model based control, pH process

Tufan Kumbasar; Ibrahim Eksin; Mujde Guzelkaya; Engin Yesil

2011-09-01T23:59:59.000Z

336

DOE-EERC jointly sponsored research program  

Science Conference Proceedings (OSTI)

U.S. Department of Energy (DOE) Cooperative Agreement DE-FC21-93MC30098 funded through the Office of Fossil Energy and administered at the Federal Energy Technology Center (FETC) supported the performance of a Jointly Sponsored Research Program (JSRP) at the Energy and Environmental Research Center (EERC) with a minimum 50% nonfederal cost share to assist industry in commercializing and effectively applying efficient, nonpolluting energy technologies that can compete effectively in meeting market demands for clean fuels, chemical feedstocks, and electricity in the 21st century. The objective of the JSRP was to advance the deployment of advanced technologies for improving energy efficiency and environmental performance through jointly sponsored research on topics that would not be adequately addressed by the private sector alone. Examples of such topics include the barriers to hot-gas cleaning impeding the deployment of high-efficiency power systems and the search for practical means for sequestering CO{sub 2} generated by fossil fuel combustion. The selection of particular research projects was guided by a combination of DOE priorities and market needs, as provided by the requirement for joint venture funding approved both by DOE and the private sector sponsor. The research addressed many different energy resource and related environmental problems, with emphasis directed toward the EERC's historic lead mission in low-rank coals (LRCs), which represent approximately half of the U.S. coal resources in the conterminous states, much larger potential resources in Alaska, and a major part of the energy base in the former U.S.S.R., East Central Europe, and the Pacific Rim. The Base and JSRP agreements were tailored to the growing awareness of critical environmental issues, including water supply and quality, air toxics (e.g., mercury), fine respirable particulate matter (PM{sub 2.5}), and the goal of zero net CO{sub 2} emissions.

Hendrikson, J.G.; Sondreal, E.A.

1999-09-01T23:59:59.000Z

337

The application research of compound control based on the fuzzy neural network inverse method  

Science Conference Proceedings (OSTI)

Through the study of the boiler-turbine coordination and control network, this paper analysis the difficulties of the inverse system analytical method in practical use. A structure and learning method with close to the dynamic inverse system capacity ... Keywords: compound control, decoupling control instruction, inverse system, neural network

Qingli Wang; Yuanwei Jing; Lifu Wang; Zhi Kong

2009-06-01T23:59:59.000Z

338

Efficient scalable VLSI architecture for Montgomery inversion in GF(p)  

Science Conference Proceedings (OSTI)

The multiplicative inversion operation is a fundamental computation in several cryptographic applications. In this work, we propose a scalable VLSI hardware to compute the Montgomery modular inverse in GF(p). We suggest a new correction phase ... Keywords: Montgomery inverse, elliptic curve cryptography, scalable hardware design

Adnan Abdul-Aziz Gutub; Alexandre Ferreira Tenca

2004-05-01T23:59:59.000Z

339

Inversion of Robin coefficient by a spectral stochastic finite element approach  

Science Conference Proceedings (OSTI)

This paper investigates a variational approach to the nonlinear stochastic inverse problem of probabilistically calibrating the Robin coefficient from boundary measurements for the steady-state heat conduction. The problem is formulated into an optimization ... Keywords: Conjugate gradient method, Robin inverse problem, Spectral stochastic finite element method, Stochastic inverse problems, Uncertainty quantification

Bangti Jin; Jun Zou

2008-03-01T23:59:59.000Z

340

Mesozoic tectonic inversion in the Neuquen Basin of west-central Argentina  

E-Print Network (OSTI)

Mesozoic tectonic inversion in the Neuquen Basin of west-central Argentina produced two main fault systems: (1) deep faults that affected basement and syn-rift strata where preexisting faults were selectively reactivated during inversion based on their length and (2) shallow faults that affected post-rift and syn-inversion strata. Normal faults formed at high angle to the reactivated half-graben bounding fault as a result of hangingwall expansion and internal deformation as it accommodated to the shape of the curved footwall during oblique inversion. Contraction during inversion was initially accommodated by folding and internal deformation of syn-rift sedimentary wedges, followed by displacement along half-graben bounding faults. We suspect that late during inversion the weight of the overburden inhibited additional fault displacement and folding became the shortening-accommodating mechanism. A Middle Jurassic inversion event produced synchronous uplift of inversion structures across the central Neuquen Basin. Later inversion events (during Late Jurassic, Early Cretaceous, and Late Cretaceous time) produced an "inversion front" that advanced north of the Huincul Arch. Synchroneity of fault reactivation during the Callovian inversion event may be related to efficient stress transmission north of the Huincul Arch, probably due to easy reactivation of low-dip listric fault segments. This required little strain accumulation along "proximal" inversion structures before shortening was transferred to more distal structures. Later inversion events found harderto- reactivate fault segments, resulting in proximal structures undergoing significant inversion before transferring shortening. The time between the end of rifting and the different inversion events may have affected inversion. Lithosphere was probably thermally weakened at the onset of the initial Callovian inversion phase, allowing stress transmission over a large distance from the Huincul Arch and causing synchronous inversion across the basin. Later inversion affected a colder and more viscous lithosphere. Significant strain needed to accumulate along proximal inversion structures before shortening was transferred to more distal parts of the basin. Timing of inversion events along the central Neuquen Basin suggest a megaregional control by right-lateral displacement motion along the Gastre Fault Zone, an intracontinental megashear zone thought to have been active prior to and during the opening of the South Atlantic Ocean.

Grimaldi Castro, Gabriel Orlando

2005-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

EPRI-CRIEPI Joint Human Factors Program Summary Report: Joint EPRI-CRIEPI Human Factors Studies  

Science Conference Proceedings (OSTI)

The EPRI-CRIEPI Joint Human Factors Program developed an array of intervention products that provide logical solutions to performance problems confronting nuclear power plant maintenance workers. These products, designed to reduce the incidence of errors and increase productivity, range from job performance cards to a software-based authoring system for training material.

1995-01-24T23:59:59.000Z

342

Berkeley India Joint Leadership on Energy and Environment | Open Energy  

Open Energy Info (EERE)

India Joint Leadership on Energy and Environment India Joint Leadership on Energy and Environment Jump to: navigation, search Logo: Berkeley India Joint Leadership on Energy and Environment Name Berkeley India Joint Leadership on Energy and Environment Agency/Company /Organization Lawrence Berkeley National Laboratory Sector Energy Focus Area Energy Efficiency Topics Policies/deployment programs, Pathways analysis, Background analysis Website http://india.lbl.gov/ Country India Southern Asia References Program Homepage[1] Abstract The Berkeley India Joint Leadership on Energy and Environment (BIJLEE) is a Lawrence Berkeley National Laboratory joint research and development program in which researchers work with the government and private sector of India to assist in the adoption of pathways and approaches for reducing the emissions of greenhouse gases while pursuing sustainable economic development.

343

Comments of the Joint Center for Political and Economic Studies |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Center for Political and Economic Studies Joint Center for Political and Economic Studies Comments of the Joint Center for Political and Economic Studies The Media and Technology Institute and the Climate Change Initiative at the Joint Center for Political and Economic Studies ("Joint Center")1 respectfully submit these comments in response to the United States Department of Energy's ("DoE") Request for Information regarding its implementation of the Smart Grid provisions of Federal Communications Commission's ("FCC") National Broadband Plan. Comments of the Joint Center for Political and Economic Studies More Documents & Publications Re: NBP RFI: Data Access Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy- Request for

344

Tubular spring slip joint and jar  

SciTech Connect

The present invention comprises a pressure balanced tubular spring slip-joint and jar including a generally tubular outer housing having longitudinal slot means in the wall thereof, and a hammer area of increased wall thickness at one end thereof, within which housing slidably extends a jar mandrel means having first and second longitudinally spaced enlarged diameter anvil areas, at least one fastener tapped into one of those anvil areas, the heads of said fastener protruding into said slot means. Both said housing and said mandrel means possesses axial bores therethrough, which are placed in communication via the bore of a tubular spring within the housing, whereby during extension and contraction of the slip-joint and jar means of the present invention the area within said axial bores and said spring bore is of a constant volume. The invention may be employed to provide force impulses in either longitudinal direction, said tubular spring aiding the application of those impulses when said housing and said mandrel means move relatively toward each other. By proper selection of spring length and use of a coiled spring having spaced coils, the present invention may also be employed as a bi-directional shock absorber.

Heemstra, T. R.

1985-04-23T23:59:59.000Z

345

Development of the bus joint for the ITER Central Solenoid  

SciTech Connect

The terminations of the Central Solenoid (CS) modules are connected to the bus extensions by joints located outside the CS in the gap between the CS and Torodial Field (TF) assemblies. These joints have very strict space limitations. Low resistance is a common requirement for all ITER joints. In addition, the CS bus joints will experience and must be designed to withstand significant variation in the magnetic field of several tenths of a Tesla per second during initiation of plasma. The joint resistance is specified to be less than 4 nOhm. The joints also have to be soldered in the field and designed with the possibility to be installed and dismantled in order to allow cold testing in the cold test facility. We have developed coaxial joints that meet these requirements and have demonstrated the feasibility to fabricate and assemble them in the vertical configuration. We introduced a coupling cylinder with superconducting strands soldered to the surface of the cable that can be installed in the ITER assembly hall and at the Cold Test Facility. This cylinder serves as a transition area between the CS module and the bus extension. We made two racetrack samples and tested four bus joints in our Joint Test Apparatus. Resistance of the bus joints was measured by a decay method and by a microvoltmeter; the value of the current was measured by the Hall probes. This measurement method was verified in the previous tests. The resistance of the joints varied insignificantly from 1.5 to 2 nOhm. One of the challenges associated with a soldered joint is the inability to use corrosive chemicals that are difficult to clean. This paper describes our development work on cable preparation, chrome removal, compaction, soldering, and final assembly and presents the test results.

Martovetsky, Nicolai N [ORNL] [ORNL; Irick, David Kim [ORNL] [ORNL; Kenney, Steven J [ORNL] [ORNL

2013-01-01T23:59:59.000Z

346

Development of hip joint prostheses with modular stems  

Science Conference Proceedings (OSTI)

Minimally invasive surgery for THR (Total Hip joint Replacement) is attractive for both surgeons and patients. Since such surgery needs an incision of only 3-4 inches around the hip joint for THR instead of the traditional, large incision of 10-12 inches, ... Keywords: Finite element method, Hip joint replacement, Minimal invasive surgery, Prototypical polymer model, Ti-6Al-4V modular stem

Ji-Yong Bae; Umar Farooque; Kyung-won Lee; Gyu-Ha Kim; Insu Jeon; Taek-Rim Yoon

2011-09-01T23:59:59.000Z

347

Joint Environmental Management System (EMS) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Environmental Management System (EMS) Joint Environmental Management System (EMS) Joint Environmental Management System (EMS) Joint Environmental Management System (EMS) The environmental management system (EMS) has two areas of focus: environmental compliance and environmental sustainability. The environmental compliance aspect of the EMS consists of regulatory compliance and monitoring programs that implement federal, state, local, and tribal requirements; agreements; and permits under the Legacy Management contract. The environmental sustainability aspect promotes and integrates sustainability initiatives such as energy and natural resource conservation, waste minimization, green construction, and use of eco-friendly products and services into all phases of work. U.S. Department of Energy (DOE) Office of Legacy Management (LM) EMS was

348

Joint Working Group for Fusion Safety | Princeton Plasma Physics...  

NLE Websites -- All DOE Office Websites (Extended Search)

Human Resources Environment, Safety & Health Sustainable PPPL Joint Working Group for Fusion Safety Procurement Division Technology Transfer Furth Plasma Physics Library Contact...

349

2010 Joint Effectiveness Review of Hanford Bldg 336 Corrective...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Assessment of the Effectiveness of Corrective Actions for the Building 336 Accident, July 2010 The U.S. Department of Energy, Office of Independent Oversight, within the...

350

Argonne CNM: Joint NSRC Workshop on Nanoparticle Science  

NLE Websites -- All DOE Office Websites (Extended Search)

2012 NSRC Workshop on Nanoparticle Science Joint NSRC Workshop on Nanoparticle Science November 5-6, 2012 Argonne National Laboratory Agenda Posters Report This invitation-only...

351

Joint Actinide Shock Physics Experimental Research Facility Restart...  

NLE Websites -- All DOE Office Websites (Extended Search)

Office of Safety and Emergency Management Evaluations Activity Report for the Joint Actinide Shock Physics Experimental Research Facility Restart Operational Readiness...

352

Optimization Online - A General Heuristic Method for Joint Chance ...  

E-Print Network (OSTI)

Aug 21, 2007 ... A General Heuristic Method for Joint Chance-Constrained Stochastic Programs with Discretely Distributed Parameters. Matthew W. Tanner ...

353

Optimization Online - Threshold Boolean Form for Joint Probabilistic ...  

E-Print Network (OSTI)

Sep 14, 2012 ... Abstract: We develop a new modeling and exact solution method for stochastic programming problems that include a joint probabilistic ...

354

Joint Spectral Radius and Path-Complete Graph Lyapunov Functions  

E-Print Network (OSTI)

Nov 22, 2011 ... Abstract: We introduce the framework of path-complete graph Lyapunov functions for approximation of the joint spectral radius. The approach is ...

355

JOINT SPECTRAL RADIUS AND PATH-COMPLETE GRAPH ...  

E-Print Network (OSTI)

proximation of the joint spectral radius. The approach is based on the analysis of the underlying switched system via inequalities imposed among multiple ...

356

Professional Preface, 4 (1): TMS Approves Five Chapters as Joint ...  

Science Conference Proceedings (OSTI)

At the October 9, 1996, meeting of the TMS Board of Directors, five student chapters were approved as Joint ASM/TMS Student Chapters. They are: University of ...

357

A "joint+marginal" approach to parametric polynomial optimization  

E-Print Network (OSTI)

Jan 13, 2010 ... A "joint+marginal" approach to parametric polynomial optimization. Jean B. Lasserre(lasserre ***at*** laas.fr). Abstract: Given a compact ...

358

DOE Joint Genome Institute: IMG ER Goes Primetime: Provides Expert...  

NLE Websites -- All DOE Office Websites (Extended Search)

that regulate our environment. Scientists at the U.S. Department of Energy (DOE) Joint Genome Institute (JGI) and the Biological Data Management and Technology Center...

359

Joint EFCOG/DOE Chemical Management 2013 Workshop - March 19...  

NLE Websites -- All DOE Office Websites (Extended Search)

3 Workshop Information Health and Safety POSTPONED. Future events will be announced. Joint EFCOGDOE Chemical Management 2013 Workshop March 19-21, 2013 DOE Forrestal...

360

Joint Motion to Intervene of Northern States Power Company (Minnesota...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

States Power Company (Minnesota) et al. on the Proposed Open Access Requirements Joint Motion to Intervene of Northern States Power Company (Minnesota) et al. on the...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

DOE Joint Genome Institute: JGI's Susannah Tringe Receives Prestigious...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy (DOE) Office of Science Early Career Research Program has awarded a grant to DOE Joint Genome Institute scientist Susannah Green Tringe to conduct genomic studies of...

362

EMSL: Joint Call for Exploratory Collaborations between EMSL...  

NLE Websites -- All DOE Office Websites (Extended Search)

regarding the proposal format, attachments, and submittal process are unique to this joint Collaborative Science initiative, and returning applicants to either user facility...

363

Fatigue Predictions of Various Joints of Magnesium Alloys  

Science Conference Proceedings (OSTI)

Currently, a front shock tower of passenger vehicle is developed with various magnesium alloys and joining methods. To predict the fatigue behavior of the joints ...

364

Failure of railhead material of insulated rail joints.  

E-Print Network (OSTI)

??"Aim of this research is to examine the impact fatigue failure of the railhead of the IRJ [insulated rail joints] and determine actions that can… (more)

Mandal, Nirmal Kumar.

2011-01-01T23:59:59.000Z

365

A coupled model of fluid flow in jointed rock  

SciTech Connect

We present a fully coupled model of fluid flow in jointed rock, where the fluid flow depends on the joint openings and the joint openings depend on the fluid pressure. The joints and rock blocks are modeled discretely using the finite element method. Solutions for the fluid and rock are obtained and iteration is performed until both solutions converge. Example applications include an examination of the effects of back-pressure on flow in a geothermal reservoir and transient fluid injection into a reservoir.

Swenson, Daniel; Martineau, Rick; James, Mark; Brown, Don

1991-01-01T23:59:59.000Z

366

ALCF and MCS Establish Joint Lab for Evaluating Computing Platforms...  

NLE Websites -- All DOE Office Websites (Extended Search)

version To centralize research activities aimed at evaluating future high performance computing platforms, a new joint laboratory at Argonne will provide significant...

367

WEB RESOURCE: Joint Electron Device Enginnering Council - TMS  

Science Conference Proceedings (OSTI)

Feb 12, 2007 ... "The web site of The JEDEC Solid State Technology Association (Once known as the Joint Electron Device Engineering Council). JEDEC is the ...

368

Joint Genome Institute Progress Report 2002-2005  

SciTech Connect

Progress report covering activities at the DOE-Joint Genome Institute in Walnut Creek, California for the period 2002-2005.

Gilbert, David

2005-10-03T23:59:59.000Z

369

Joint Statement by President Barack Obama of the United States...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and Prime Minister Stephen Harper of Canada on Accelerating Economic Recovery and Job Creation Joint Statement by President Barack Obama of the United States of America and...

370

Joint pricing and inventory control under reference price effects.  

E-Print Network (OSTI)

??In many firms the pricing and inventory control functions are separated. However, a number of theoretical models suggest a joint determination of inventory levels and… (more)

Gimpl-Heersink, Lisa

2008-01-01T23:59:59.000Z

371

Joint Technical Operations Team | National Nuclear Security Administra...  

National Nuclear Security Administration (NNSA)

Joint Technical Operations Team | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response...

372

Joint Actinide Shock Physics Experimental Research Facility Restart...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and Emergency Management Evaluations Activity Report for the Joint Actinide Shock Physics Experimental Research Facility Restart Operational Readiness Review Pre- Visit Dates...

373

Identifying Isotropic Events Using a Regional Moment Tensor Inversion  

SciTech Connect

We calculate the deviatoric and isotropic source components for 17 explosions at the Nevada Test Site, as well as 12 earthquakes and 3 collapses in the surrounding region of the western US, using a regional time-domain full waveform inversion for the complete moment tensor. The events separate into specific populations according to their deviation from a pure double-couple and ratio of isotropic to deviatoric energy. The separation allows for anomalous event identification and discrimination between explosions, earthquakes, and collapses. Confidence regions of the model parameters are estimated from the data misfit by assuming normally distributed parameter values. We investigate the sensitivity of the resolved parameters of an explosion to imperfect Earth models, inaccurate event depths, and data with low signal-to-noise ratio (SNR) assuming a reasonable azimuthal distribution of stations. In the band of interest (0.02-0.10 Hz) the source-type calculated from complete moment tensor inversion is insensitive to velocity models perturbations that cause less than a half-cycle shift (<5 sec) in arrival time error if shifting of the waveforms is allowed. The explosion source-type is insensitive to an incorrect depth assumption (for a true depth of 1 km), and the goodness-of-fit of the inversion result cannot be used to resolve the true depth of the explosion. Noise degrades the explosive character of the result, and a good fit and accurate result are obtained when the signal-to-noise ratio (SNR) is greater than 5. We assess the depth and frequency dependence upon the resolved explosive moment. As the depth decreases from 1 km to 200 m, the isotropic moment is no longer accurately resolved and is in error between 50-200%. However, even at the most shallow depth the resultant moment tensor is dominated by the explosive component when the data have a good SNR.

Ford, S R; Dreger, D S; Walter, W R

2008-11-04T23:59:59.000Z

374

Joint Institute for Nanoscience Annual Report 2004  

Science Conference Proceedings (OSTI)

Due to the inherently interdisciplinary nature of nanoscience and nanotechnology, research in this arena is often significantly enhanced through creative cooperative activities. The Joint Institute for Nanoscience (JIN) is a venture of the University of Washington (UW) and Pacific Northwest National Laboratory (PNNL) to encourage and enhance high impact and high quality nanoscience and nanotechnology research that leverages the strengths and capabilities of both institutions, and to facilitate education in these areas. This report summarizes JIN award activities that took place during fiscal year 2004 and provides a historical list of JIN awardees, their resulting publications, and JIN-related meetings. Major portions of the JIN efforts and resources are dedicated to funding graduate students and postdoctoral research associates to perform research in collaborations jointly directed by PNNL staff scientists and UW professors. JIN fellowships are awarded on the basis of applications that include research proposals. They have been very successful in expanding collaborations between PNNL and UW, which have led to many excellent joint publications and presentations and enhanced the competitiveness of both institutions for external grant funding. JIN-based interactions are playing a significant role in creating new research directions and reshaping existing research programs at both the UW and PNNL. The JIN also co-sponsors workshops on Nanoscale Science and Technology, four of which have been held in Seattle and one in Richland. In addition to involving PNNL staff in various UW nanoscience courses and seminars, a National Science Foundation grant, Development of UW-PNL Collaborative Curriculums in Nano-Science and Technology, has allowed the development of three intensive short courses that are taught by UW faculty, PNNL staff, and faculty from other institutions, including Washington State University, the University of Idaho, Stanford University, and the University of Alaska. The JIN agreement recognizes that cooperation beyond UW and PNNL is highly valuable. Starting in early 2003, efforts were initiated to form a regional communication link called the Northwest Nanoscience and Nanotechnology Network (N4). In concept, N4 is a tool to encourage communication and help identify regional resources and nanoscience and technology activities.

Baer, Donald R.; Campbell, Charles

2005-02-01T23:59:59.000Z

375

Matrix Inversion Lemma and Information Filter Mohammad Emtiyaz Khan  

E-Print Network (OSTI)

Matrix Inversion Lemma and Information Filter Mohammad Emtiyaz Khan Honeywell Technology Solutions) zt+1|t = (I -JtBT t )A-T t zt|t, Zt+1|t = (I -JtBT t )St (8) where St = A-T t P-1 t|t A-1 t and Jt = StBt(BT t StBt +Q-1 t )-1. The Kalman gain is given as Kt = Zt|tCT t R-1 t . For detailed proof see

Mitchell, Ian

376

Inverse problems for symmetric matrices with a submatrix constraint  

Science Conference Proceedings (OSTI)

This paper is concerned with the following problems: Problem I(a). Given a full column rank matrix X@?R^n^x^p and symmetric matrices B@?R^p^x^p and A"0@?R^r^x^r, find an nxn symmetric matrix A such thatX^TAX=B,A([1,r])=A"0, where A([1,r]) is the rxr ... Keywords: Canonical correlation decomposition, Generalized singular value decomposition, Inverse problem, Least-squares solution, Optimal approximation, Symmetric matrix

Yongxin Yuan; Hua Dai

2007-05-01T23:59:59.000Z

377

Gravitational radiation from primordial helical inverse cascade magnetohydrodynamic turbulence  

SciTech Connect

We consider the generation of gravitational waves by primordial helical inverse-cascade magnetohydrodynamic (MHD) turbulence produced by bubble collisions at the electroweak phase transition. We extend the previous study 1 by considering both currently discussed models of MHD turbulence. For popular electroweak phase transition parameter values, the generated gravitational wave spectrum is only weakly dependent on the MHD turbulence model. Compared with the unmagnetized electroweak phase transition case, the spectrum of MHD-turbulence-generated gravitational waves peaks at lower frequency with larger amplitude and can be detected by the proposed Laser Interferometer Space Antenna.

Kahniashvili, Tina [Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506 (United States); Department of Physics, Laurentian University, Ramsey Lake Road, Sudbury, ON P3E 2C6 (Canada); National Astrophysical Observatory, Ilia Chavchavadze State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Campanelli, Leonardo [Dipartimento di Fisica, Universita di Bari, I-70126 Bari (Italy); INFN - Sezione di Bari, I-70126 Bari (Italy); Gogoberidze, Grigol [Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506 (United States); National Astrophysical Observatory, Ilia Chavchavadze State University, 2A Kazbegi Ave, Tbilisi, GE-0160 (Georgia); Centre for Plasma Astrophysics, K.U. Leuven, Celestijnenlaan 200B, 3001 Leuven (Belgium); Maravin, Yurii; Ratra, Bharat [Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506 (United States)

2008-12-15T23:59:59.000Z

378

The LLNL/UCLA high gradient inverse free electron laser  

SciTech Connect

We describe the Inverse Free Electron Accelerator currently under construction at Lawrence Livermore National Lab. Upon completion of this accelerator, high brightness electrons generated in the photoinjector blowout regime and accelerated to 50 MeV by S-band accelerating sections will interact with > 4 TW peak power Ti:Sapphire laser in a highly tapered 50 cm undulator and experience an acceleration gradient of > 200 MeV/m. We present the final design of the accelerator as well as the results of start-to-end simulations investigating preservation of beam quality and tolerances involved with this accelerator.

Moody, J. T.; Musumeci, P.; Anderson, G.; Anderson, S.; Betts, S.; Fisher, S.; Gibson, D.; Tremaine, A.; Wu, S. [Department of Physics and Astronomy, UCLA, Los Angeles California, 90095 (United States); Lawrence Livermore National Laboratory (United States)

2012-12-21T23:59:59.000Z

379

Former Worker Program - Joint Outreach Task Group  

NLE Websites -- All DOE Office Websites (Extended Search)

Group Group Former Worker Medical Screening Program (FWP) The Joint Outreach Task Group (JOTG) includes representatives from HSS, Department of Labor (DOL), the National Institute for Occupational Safety and Health (NIOSH), the Offices of the Ombudsman for DOL and NIOSH, and the DOE-funded FWP projects. The JOTG was established in 2009 under the premise that agencies/programs with common goals can work together by combining resources and coordinating outreach efforts. Each involved agency has a different mission, but the missions are complementary. By working together, the agencies are better able to serve the DOE workforce. The JOTG focuses on educating the former workers on the programs and resources available to them. The JOTG has created a monthly calendar of community events to facilitate interagency and community involvement in these events.

380

Challenges with jointed-pipe underbalanced operations  

Science Conference Proceedings (OSTI)

Successful underbalanced operations demand a systematic approach with integration of engineering, operations, production, reservoir, and geology. There are significant advantages to underbalanced drilling (UD). Formation damage can be minimized if proper circulating fluids and operating parameters are chosen; there is an opportunity for reservoir evaluation and characterization while drilling; lost circulation and differential sticking can be avoided, combined with improvements in drilling rate of penetration (ROP); and it also provides an alternative method of well control. This paper discusses engineering challenges and considerations for underbalanced operations using multiphase flow as well as advances made during UD with rotary jointed pipe. Excluding air, mist, and foam, underbalanced techniques with multiphase fluids are reviewed. Much of the discussion and concepts also apply to coiled-tubing underbalanced operations.

Saponja, J.

1998-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Joint Institute for Nanoscience Annual Report 2003  

SciTech Connect

The Joint Institute for Nanoscience (JIN) is a cooperative venture of the University of Washington and Pacific Northwest National Laboratory to encourage and enhance high-impact and high-quality nanoscience and nanotechnology of all types. This first annual report for the JIN summarizes activities beginning in 2001 and ending at the close of fiscal year 2003 and therefore represents somewhat less than two years of activities. Major portions of the JIN resources are dedicated to funding graduate students and postdoctoral research associates to perform research in collaborations jointly directed by Pacific Northwest National Laboratory (PNNL) staff scientists and University of Washington (UW) professors. These fellowships were awarded on the basis of applications that included research proposals. JIN co-sponsors an annual Nanoscale Science and Technology Workshop held in Seattle. In addition to involving PNNL staff in various UW nanoscience courses and seminars, a National Science Foundation grant Development of UW-PNL Collaborative Curriculums in Nano-Science and Technology has allowed the development of three intensive short courses that are taught by UW faculty, PNNL staff, and faculty from other institutions, including Washington State University, the University of Idaho, Stanford University, and the University of Alaska. The initial JIN agreement recognized that expansion of cooperation beyond UW and PNNL would be highly valuable. Starting in early 2003, efforts were initiated to form a regional communication link called the Northwest Nanoscience and Nanotechnology Network (N?). In concept, N? is a tool to encourage communication and help identify regional resources and nanoscience and technology activities.

Baer, Donald R.; Campbell, Charles

2004-02-01T23:59:59.000Z

382

Jointly Sponsored Research Program Energy Related Research  

DOE Green Energy (OSTI)

Cooperative Agreement, DE-FC26-98FT40323, Jointly Sponsored Research (JSR) Program at Western Research Institute (WRI) began in 1998. Over the course of the Program, a total of seventy-seven tasks were proposed utilizing a total of $23,202,579 in USDOE funds. Against this funding, cosponsors committed $26,557,649 in private funds to produce a program valued at $49,760,228. The goal of the Jointly Sponsored Research Program was to develop or assist in the development of innovative technology solutions that will: (1) Increase the production of United States energy resources - coal, natural gas, oil, and renewable energy resources; (2) Enhance the competitiveness of United States energy technologies in international markets and assist in technology transfer; (3) Reduce the nation's dependence on foreign energy supplies and strengthen both the United States and regional economies; and (4) Minimize environmental impacts of energy production and utilization. Under the JSR Program, energy-related tasks emphasized enhanced oil recovery, heavy oil upgrading and characterization, coal beneficiation and upgrading, coal combustion systems development including oxy-combustion, emissions monitoring and abatement, coal gasification technologies including gas clean-up and conditioning, hydrogen and liquid fuels production, coal-bed methane recovery, and the development of technologies for the utilization of renewable energy resources. Environmental-related activities emphasized cleaning contaminated soils and waters, processing of oily wastes, mitigating acid mine drainage, and demonstrating uses for solid waste from clean coal technologies, and other advanced coal-based systems. Technology enhancement activities included resource characterization studies, development of improved methods, monitors and sensors. In general the goals of the tasks proposed were to enhance competitiveness of U.S. technology, increase production of domestic resources, and reduce environmental impacts associated with energy production and utilization. This report summarizes the accomplishments of the JSR Program.

Western Research Institute

2009-03-31T23:59:59.000Z

383

UnitedStates-JapanJointNuclenrEnergyActionPlan  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

UnitedStates-JapanJointNuclenrEnergyActionPlan UnitedStates-JapanJointNuclenrEnergyActionPlan 1.Introduction 1.1BackguPoundandObjective P肥sidentBushoftheUnitedStatesandPrimeMinisterKoizumiofJapanhaveboth statedtheirstrongsupportfbrthecontributionofnuclearpowertoenergysecurityand theglobalenvironmenLJapanwasthefirstnationtoendorsePresidentBush,sGIobal NuclearEnergyParmership. DuringtheJune29,2006meetingbetweenPresidentBushandPIimeMinister

384

Time- and temperature-dependent failures of a bonded joint  

DOE Green Energy (OSTI)

Time and temperature dependent properties of a tubular lap bonded joint are reported. The joint bonds a cast iron rod and a composite pipe together with an epoxy type of an adhesive material containing chopped glass fiber. A new fabrication method is proposed.

Sihn, Sangwook; Miyano, Yasushi; Tsai, S.W. [Stanford Univ., Palo Alto, CA (United States)

1997-07-01T23:59:59.000Z

385

Nuclear Maintenance Applications Center: Assembling Gasketed, Flanged Bolted Joints  

Science Conference Proceedings (OSTI)

Over the years, EPRI has published various reports that provide guidance on bolting usage. As a result of advancements over time in understanding the problems with bolted assembly makeup as well as human performance, these reports presented sometimes-contradictory recommendations. Additional research has addressed gasketed joints and gasketed joint makeup. This report reconciles and consolidates the earlier documents.

2007-12-21T23:59:59.000Z

386

A differential game of joint implementation of environmental projects  

Science Conference Proceedings (OSTI)

This paper proposes a two-player, finite-horizon differential game model to analyze joint implementation in environmental projects, one of the flexible mechanisms considered in the Kyoto Protocol. Our results show that allowing for foreign investments ... Keywords: Differential games, Environment, Joint implementation

MichčLe Breton; Georges Zaccour; Mehdi Zahaf

2005-10-01T23:59:59.000Z

387

2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION  

E-Print Network (OSTI)

2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2006 Transportation Tomorrow Survey Data Presentation #12;2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO City of Hamilton City of Kawartha Lakes City of Guelph City of Brantford

Toronto, University of

388

Majorana Demonstrator Bolted Joint Mechanical and Thermal Analysis  

SciTech Connect

The MAJORANA DEMONSTRATOR is designed to probe for neutrinoless double-beta decay, an extremely rare process with a half-life in the order of 1026 years. The experiment uses an ultra-low background, high-purity germanium detector array. The germanium crystals are both the source and the detector in this experiment. Operating these crystals as ionizing radiation detectors requires having them under cryogenic conditions (below 90 K). A liquid nitrogen thermosyphon is used to extract the heat from the detectors. The detector channels are arranged in strings and thermally coupled to the thermosyphon through a cold plate. The cold plate is joined to the thermosyphon by a bolted joint. This circular plate is housed inside the cryostat can. This document provides a detailed study of the bolted joint that connects the cold plate and the thermosyphon. An analysis of the mechanical and thermal properties of this bolted joint is presented. The force applied to the joint is derived from the torque applied to each one of the six bolts that form the joint. The thermal conductivity of the joint is measured as a function of applied force. The required heat conductivity for a successful experiment is the combination of the thermal conductivity of the detector string and this joint. The thermal behavior of the joint is experimentally implemented and analyzed in this study.

Aguayo Navarrete, Estanislao; Reid, Douglas J.; Fast, James E.

2012-06-01T23:59:59.000Z

389

Monte Carlo Simulation of Joint Transport of Neutrons Monte Carlo Simulation of Joint Transport of Neutrons  

National Nuclear Security Administration (NNSA)

Monte Carlo Simulation of Joint Transport of Neutrons Monte Carlo Simulation of Joint Transport of Neutrons Monte Carlo Simulation of Joint Transport of Neutrons and Photons and Photons Zhitnik Zhitnik A A . . K K . . , , Artemeva Artemeva E.V., E.V., Bakanov Bakanov V.V., V.V., Donskoy Donskoy E.N., E.N., Zalyalov Zalyalov A.N., A.N., Ivanov Ivanov N.V., N.V., Ognev Ognev S.P., S.P., Ronzhin Ronzhin A.B., A.B., Roslov Roslov V.I., V.I., Semenova Semenova T.V. T.V. RFNC-VNIIEF, 607190, Sarov, RFNC-VNIIEF, 607190, Sarov, Nizhni Nizhni Novgorod region Novgorod region The approaches used at VNIIEF to simulate transport of neutrons and photons in standard (with The approaches used at VNIIEF to simulate transport of neutrons and photons in standard (with surface description of region interfaces) and grid geometries are considered in the paper.

390

Seismic Capacity of Threaded, Brazed, and Grooved Pipe Joints  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SEISMIC CAPACITY OF THREADED, SEISMIC CAPACITY OF THREADED, BRAZED AND GROOVED PIPE JOINTS Brent Gutierrez, PhD, PE George Antaki, PE, F.ASME DOE NPH Conference October 25-26, 2011 Motivation * Understand the behavior and failure mode of common joints under extreme lateral loads * Static and shake table tests conducted of pressurized - Threaded, - Brazed, - Mechanical joints Static Testing o Pressurized spool to 150 psi o Steady downward force applied while recording deflections o Grooved clamped mech. joints * 16 tests performed o Threaded joints * 4 tests o Brazed (copper) * 4 tests Grooved Couplings o Catalog items o ASTM A106 Grade B piping o ASTM A 536 couplings o Lateral deflections imposed well above manufacturer's angular installation tolerance

391

Senior International Energy Officials Issue Joint Statement in Support of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Senior International Energy Officials Issue Joint Statement in Senior International Energy Officials Issue Joint Statement in Support of the Global Nuclear Energy Partnership Senior International Energy Officials Issue Joint Statement in Support of the Global Nuclear Energy Partnership May 21, 2007 - 12:55pm Addthis WASHINGTON, DC - U.S. Secretary of Energy Samuel W. Bodman today announced that the U.S. Department of Energy (DOE) and senior energy officials from some of the world's leading economies issued a joint statement in support of the Global Nuclear Energy Partnership (GNEP) and nuclear energy cooperation. The People's Republic of China, France, Japan, Russia and the United States issued the Joint Statement, which addresses the prospects for international cooperation in peaceful uses of nuclear energy, including

392

United States and Czech Republic Establish a Joint Civil Nuclear  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Establish a Joint Civil Nuclear Establish a Joint Civil Nuclear Cooperation Center in Prague United States and Czech Republic Establish a Joint Civil Nuclear Cooperation Center in Prague June 12, 2013 - 12:17pm Addthis News Media Contact (202) 586-4940 PRAGUE, Czech Republic - The U.S. Department of Energy (DOE) recently joined with the U.S. Embassy in Prague and the Czech Republic's Ministry of Education, Youth and Sports to sign an agreement that establishes a joint Civil Nuclear Cooperation Center in Prague. The creation of this Center is another valued step in expanding U.S.-Czech energy collaboration and fulfills the commitment made by President Obama and Czech Prime Minister NeÄŤas in October 2011 to establish such a Center to facilitate and coordinate joint activities and support regional initiatives in the

393

The Joint BioEnergy Institute (JBEI): Developing New Biofuels by Overcoming Biomass Recalcitrance  

E-Print Network (OSTI)

010-9086-2 The Joint BioEnergy Institute (JBEI): DevelopingThe mission of the Joint BioEnergy Institute is to advanceJ. D. Keasling Joint BioEnergy Institute, 5885 Hollis St. ,

Scheller, Henrik Vibe; Singh, Seema; Blanch, Harvey; Keasling, Jay D.

2010-01-01T23:59:59.000Z

394

Fact Sheet: United States-Japan Joint Nuclear Energy Action Plan...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

United States-Japan Joint Nuclear Energy Action Plan Fact Sheet: United States-Japan Joint Nuclear Energy Action Plan Fact Sheet: United States-Japan Joint Nuclear Energy Action...

395

Indo-US Joint Clean Energy Research and Development Center: Budget...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Indo-US Joint Clean Energy Research and Development Center: Budget Form Indo-US Joint Clean Energy Research and Development Center: Budget Form Indo-US Joint Clean Energy Research...

396

Design and analysis of hybrid tubular joints  

E-Print Network (OSTI)

The offshore oil industry is in the midst of an expansion phase into deep water production locations. Drilling and production at these extreme depths has caused a fundamental re-examination of current offshore structural technology. One of the structures being re-examined is production risers. High strength steel may be replaced by continuous fiber and polymer composite materials. The advantages of composites are their high specific strength and stiffness, corrosion resistance, and long life cycle. It is not structurally efficient to replace metal risers with composite risers that maintain the same inter coupling methods; the lack of material isotropy makes structural design significantly more complex. This study addresses the needs of a composite riser designer and uses this information to design composite riser couplings. Critical loading, material properties, and design limitations needed for the composite riser design engineer were examined and found to be lacking. The complex environment of composites under a combination of environmental, constant and dynamic tension, and pressure loads have yet to be addressed in a published study Filament winding was shown to be the most economically efficient manufacturing method currently available to this study. This method of manufacture has certain inherent limitations that are included in each analysis. The method chosen for connecting composite risers is to attach metal end-couplings to the riser ends. These metal ends are easily connected using conventional methods. The design challenge is then the efficient attachment of the metal end-coupling and composite tube structure. The finite element method was used to analyze various solutions to the design problem. A sample joint was designed that uses two bulges at the composite-end-coupling interface to maximize the uniformity of the failure criteria values at the bond for the case of axial loading. Pressure loading was found to have an extremely uniform effect on the failure criteria values throughout the joint; uniformity is not a problem. Two aspects of the study, environmentally degraded material properties and the failure analysis method, appear to have a significant amount of inaccuracy. Material testing is needed to improve the accuracy in these critical areas.

Stepanian, Christopher John

1993-01-01T23:59:59.000Z

397

Application Of 3D Inversion To Magnetotelluric Data In The Ogiri Geothermal  

Open Energy Info (EERE)

Of 3D Inversion To Magnetotelluric Data In The Ogiri Geothermal Of 3D Inversion To Magnetotelluric Data In The Ogiri Geothermal Area, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Application Of 3D Inversion To Magnetotelluric Data In The Ogiri Geothermal Area, Japan Details Activities (0) Areas (0) Regions (0) Abstract: A stable inversion technique has been developed for threedimensional (3D) interpretation of magnetotelluric (MT) data. The inversion method is based on the Gauss-Newton (linearized least-squares) method with smoothness regularization. Static shifts are also treated as unknown parameters in the inversion. The forward modeling is done by using the staggered-grid finite difference method. A Bayesian criterion ABIC is applied to searching for the optimum trade-off among the minimization of

398

Fast full-wave seismic inversion using source encoding.  

Science Conference Proceedings (OSTI)

Full Wavefield Seismic Inversion (FWI) estimates a subsurface elastic model by iteratively minimizing the difference between observed and simulated data. This process is extremely compute intensive, with a cost on the order of at least hundreds of prestack reverse time migrations. For time-domain and Krylov-based frequency-domain FWI, the cost of FWI is proportional to the number of seismic sources inverted. We have found that the cost of FWI can be significantly reduced by applying it to data processed by encoding and summing individual source gathers, and by changing the encoding functions between iterations. The encoding step forms a single gather from many input source gathers. This gather represents data that would have been acquired from a spatially distributed set of sources operating simultaneously with different source signatures. We demonstrate, using synthetic data, significant cost reduction by applying FWI to encoded simultaneous-source data.

Ho Cha, Young (ExxonMobil); Baumstein, Anatoly (ExxonMobil); Lee, Sunwoong (ExxonMobil); Hinkley, David (ExxonMobil); Anderson, John E. (ExxonMobil); Neelamani, Ramesh (ExxonMobil); Krebs, Jerome R. (ExxonMobil); Lacasse, Martin-Daniel (ExxonMobil)

2010-05-01T23:59:59.000Z

399

Chirped pulse inverse free-electron laser vacuum accelerator  

SciTech Connect

A chirped pulse inverse free-electron laser (IFEL) vacuum accelerator for high gradient laser acceleration in vacuum. By the use of an ultrashort (femtosecond), ultrahigh intensity chirped laser pulse both the IFEL interaction bandwidth and accelerating gradient are increased, thus yielding large gains in a compact system. In addition, the IFEL resonance condition can be maintained throughout the interaction region by using a chirped drive laser wave. In addition, diffraction can be alleviated by taking advantage of the laser optical bandwidth with negative dispersion focusing optics to produce a chromatic line focus. The combination of these features results in a compact, efficient vacuum laser accelerator which finds many applications including high energy physics, compact table-top laser accelerator for medical imaging and therapy, material science, and basic physics.

Hartemann, Frederic V. (Dublin, CA); Baldis, Hector A. (Pleasanton, CA); Landahl, Eric C. (Walnut Creek, CA)

2002-01-01T23:59:59.000Z

400

Unified Dark Energy-Dark Matter model with Inverse Quintessence  

E-Print Network (OSTI)

We consider a model where both dark energy and dark matter originate from the coupling of a scalar field with a non-conventional kinetic term to, both, a metric measure and a non-metric measure. An interacting dark energy/dark matter scenario can be obtained by introducing an additional scalar that can produce non constant vacuum energy and associated variations in dark matter. The phenomenology is most interesting when the kinetic term of the additional scalar field is ghost-type, since in this case the dark energy vanishes in the early universe and then grows with time. This constitutes an "inverse quintessence scenario", where the universe starts from a zero vacuum energy density state, instead of approaching it in the future.

Stefano Ansoldi; Eduardo I. Guendelman

2012-09-21T23:59:59.000Z

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

INVERSIONS FOR AVERAGE SUPERGRANULAR FLOWS USING FINITE-FREQUENCY KERNELS  

Science Conference Proceedings (OSTI)

I analyze the maps recording the travel-time shifts caused by averaged plasma anomalies under an 'average supergranule', constructed by means of statistical averaging over 5582 individual supergranules with large divergence signals detected in two months of Helioseismic and Magnetic Imager Dopplergrams. By utilizing a three-dimensional validated time-distance inversion code, I measure a peak vertical velocity of 117 {+-} 2 m s{sup -1} at depths around 1.2 Mm in the center of the supergranule and a root-mean-square vertical velocity of 21 m s{sup -1} over the area of the supergranule. A discrepancy between this measurement and the measured surface vertical velocity (a few m s{sup -1}) can be explained by the existence of the large-amplitude vertical flow under the surface of supergranules with large divergence signals, recently suggested by Duvall and Hanasoge.

Svanda, Michal, E-mail: michal@astronomie.cz [Astronomical Institute, Academy of Sciences of the Czech Republic (v.v.i.), Fricova 298, CZ-25165 Ondrejov (Czech Republic)

2012-11-10T23:59:59.000Z

402

Inverse Faraday Effect with Linearly Polarized Laser Pulses  

Science Conference Proceedings (OSTI)

The inverse Faraday effect is usually associated with circularly polarized radiation; here, we show that it can also occur for linearly polarized radiation. The quasistatic axial magnetic field generated by a laser propagating in plasma can be calculated by considering both the spin and the orbital angular momenta of the laser pulse. A net spin is present when the radiation is circularly polarized and a net orbital angular momentum is present if there is any deviation from perfect rotational symmetry. The orbital angular momentum gives an additional contribution to the axial magnetic field that can enhance or reduce the effect usually attributed to circular polarization and strongly depends on the intensity profile of the Laguerre-Gaussian modes involving the azimuthal and radial mode numbers.

Ali, S. [Instituto de Plasmas e Fusao Nuclear--Laboratorio Associado, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); National Centre for Physics, Shahdra Valley Road, Quaid-i-Azam University Campus, Islamabad 44000 (Pakistan); Davies, J. R.; Mendonca, J. T. [Instituto de Plasmas e Fusao Nuclear-Laboratorio Associado, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal)

2010-07-16T23:59:59.000Z

403

Soliton Solutions with Real Poles in the Alekseev formulation of the Inverse-Scattering method  

E-Print Network (OSTI)

A new approach to the inverse-scattering technique of Alekseev is presented which permits real-pole soliton solutions of the Ernst equations to be considered. This is achieved by adopting distinct real poles in the scattering matrix and its inverse. For the case in which the electromagnetic field vanishes, some explicit solutions are given using a Minkowski seed metric. The relation with the corresponding soliton solutions that can be constructed using the Belinskii-Zakharov inverse-scattering technique is determined.

S. Micciche; J. B. Griffiths

1999-09-22T23:59:59.000Z

404

On inverse problems in electromagnetic field in classical mechanics at fixed energy  

E-Print Network (OSTI)

In this paper, we consider inverse scattering and inverse boundary value problems at sufficiently large and fixed energy for the multidimensional relativistic and nonrelativistic Newton equations in a static external electromagnetic field $(V,B)$, $V\\in C^2,$ $B\\in C^1$ in classical mechanics. Developing the approach going back to Gerver-Nadirashvili 1983's work on an inverse problem of mechanics, we obtain, in particular, theorems of uniqueness.

Alexandre Jollivet

2007-01-04T23:59:59.000Z

405

Absolutely and uniformly convergent iterative approach to inverse scattering with an infinite radius of convergence  

DOE Patents (OSTI)

A method and system for solving the inverse acoustic scattering problem using an iterative approach with consideration of half-off-shell transition matrix elements (near-field) information, where the Volterra inverse series correctly predicts the first two moments of the interaction, while the Fredholm inverse series is correct only for the first moment and that the Volterra approach provides a method for exactly obtaining interactions which can be written as a sum of delta functions.

Kouri, Donald J. (Houston, TX); Vijay, Amrendra (Houston, TX); Zhang, Haiyan (Houston, TX); Zhang, Jingfeng (Houston, TX); Hoffman, David K. (Ames, IA)

2007-05-01T23:59:59.000Z

406

Spherical Resorcinol-Formaldehyde Synthesis by Inverse Suspension Polymerization  

SciTech Connect

Base catalyzed sol-gel polycondensation of resorcinol (1,3-dihydroxybenzene) with formaldehyde by inverse suspension polymerization leads to the formation of uniform, highly cross-linked, translucent, spherical gels, which have increased selectivity and capacity for cesium ion removal from high alkaline solutions. Because of its high selectivity for cesium ion, resorcinol-formaldehyde (R-F) resins are being considered for process scale column radioactive cesium removal by ion-exchange at the Waste Treatment and Immobilization Plant (WTP), which is now under construction at the Hanford site. Other specialty resins such as Superlig{reg_sign} 644 have been ground and sieved and column tested for process scale radioactive cesium removal but show high pressure drops across the resin bed during transition from column regeneration to loading and elution. Furthermore, van Deemter considerations indicate better displacement column chromatography by the use of spherical particle beads rather than irregularly shaped ground or granular particles. In our studies batch contact equilibrium experiments using a high alkaline simulant show a definite increase in cesium loading onto spherical R-F resin. Distribution coefficient (Kd) values ranged from 777 to 429 mL/g in the presence of 0.1M and 0.7M potassium ions, respectively. Though other techniques for making R-F resins have been employed, to our knowledge no one has made spherical R-F resins by inverse suspension polymerization. Moreover, in this study we discuss the data comparisons to known algebraic isotherms used to evaluate ion-exchange resins for WTP plant scale cesium removal operations.

Ray, Robert J.; Scrivens, Walter A.; Nash, Charles

2005-10-21T23:59:59.000Z

407

Atmospheric Inverse Estimates of Methane Emissions from Central California  

SciTech Connect

Methane mixing ratios measured at a tall-tower are compared to model predictions to estimate surface emissions of CH{sub 4} in Central California for October-December 2007 using an inverse technique. Predicted CH{sub 4} mixing ratios are calculated based on spatially resolved a priori CH{sub 4} emissions and simulated atmospheric trajectories. The atmospheric trajectories, along with surface footprints, are computed using the Weather Research and Forecast (WRF) coupled to the Stochastic Time-Inverted Lagrangian Transport (STILT) model. An uncertainty analysis is performed to provide quantitative uncertainties in estimated CH{sub 4} emissions. Three inverse model estimates of CH{sub 4} emissions are reported. First, linear regressions of modeled and measured CH{sub 4} mixing ratios obtain slopes of 0.73 {+-} 0.11 and 1.09 {+-} 0.14 using California specific and Edgar 3.2 emission maps respectively, suggesting that actual CH{sub 4} emissions were about 37 {+-} 21% higher than California specific inventory estimates. Second, a Bayesian 'source' analysis suggests that livestock emissions are 63 {+-} 22% higher than the a priori estimates. Third, a Bayesian 'region' analysis is carried out for CH{sub 4} emissions from 13 sub-regions, which shows that inventory CH{sub 4} emissions from the Central Valley are underestimated and uncertainties in CH{sub 4} emissions are reduced for sub-regions near the tower site, yielding best estimates of flux from those regions consistent with 'source' analysis results. The uncertainty reductions for regions near the tower indicate that a regional network of measurements will be necessary to provide accurate estimates of surface CH{sub 4} emissions for multiple regions.

Zhao, Chuanfeng; Andrews, Arlyn E.; Bianco, Laura; Eluszkiewicz, Janusz; Hirsch, Adam; MacDonald, Clinton; Nehrkorn, Thomas; Fischer, Marc L.

2008-11-21T23:59:59.000Z

408

Joint Outreach Task Group (JOTG) Calendar: May  

NLE Websites -- All DOE Office Websites (Extended Search)

May 2013 May 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 28 29 30 1 Local Event X-10 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN FWP Event X-10/Y-12 Oak Ridge, TN 2 Local Event X-10/Y-12 Oak Ridge, TN FWP Event K-25 Oak Ridge, TN 3 4 5 6 7 FWP Event Mound Miamisburg, OH 8 9 Local Event X-10 Oak Ridge, TN 10 11 12 13 14 Local Event Hanford Richland, WA Local Event X-10 Oak Ridge, TN 15 Local Event Hanford Richland, WA 16 FWP Event Mound Miamisburg, OH 17 18 19 20 21 Local Event X-10/Y-12 Oak Ridge, TN 22 23 24 25 26 27 28 29 30 31 1 Legend Energy Employees Occupational Illness Compensation Program Act (EEOICPA) Events Joint Outreach Task Group (JOTG) Events Local Events Former Worker Program Medical Screening Program (FWP) Events Other Events This page was last updated on April 12, 2013

409

Joint Outreach Task Group (JOTG) Calendar: January  

NLE Websites -- All DOE Office Websites (Extended Search)

January 2013 January 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 30 31 1 2 Local Event X-10 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN 3 Local Event X-10/Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN FWP Event K-25 Oak Ridge, TN 4 5 6 7 8 Local Event X-10 Oak Ridge, TN 9 Local Event Y-12 Oak Ridge, TN FWP Event X-10/Y-12 Oak Ridge, TN 10 11 12 13 14 15 Local Event X-10/Y12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN 16 Local Event X-10/Y12 Oak Ridge, TN 17 FWP Event Mound Miamisburg, OH 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 Legend Energy Employees Occupational Illness Compensation Program Act (EEOICPA) Events Joint Outreach Task Group (JOTG) Events Local Events Former Worker Program Medical Screening Program (FWP) Events Other Events This page was last updated on February 26, 2013 Retiree Meeting

410

Joint Outreach Task Group (JOTG) Calendar: February  

NLE Websites -- All DOE Office Websites (Extended Search)

February 2013 February 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 27 28 29 30 31 1 2 3 4 5 FWP Event Mound Miamisburg, OH Local Event Y-12 Oak Ridge, TN Local Event X-10 Oak Ridge, TN 6 Local Event X-10 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN FWP Event X-10/Y-12 Oak Ridge, TN 7 Local Event X-10/Y-12 Oak Ridge, TN FWP Event K-25 Oak Ridge, TN 8 9 10 11 12 FWP Event Fernald Harrison, OH 13 EEOICPA Event, Oak Ridge, TN EEOICPA Event, Oak Ridge National Laboratory (X-10) 14 FWP Event Mound Miamisburg, OH Local Event X-10 Oak Ridge, TN 15 16 17 18 19 20 EEOICPA Event, Los Alamos National Laboratory (LANL) 21 22 23 24 25 26 27 28 1 2 Legend Energy Employees Occupational Illness Compensation Program Act (EEOICPA) Events Joint Outreach Task Group (JOTG) Events Local Events Former Worker Program Medical Screening Program (FWP) Events

411

Joint Outreach Task Group (JOTG) Calendar: March  

NLE Websites -- All DOE Office Websites (Extended Search)

March 2013 March 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 24 25 26 27 28 1 2 3 4 5 FWP Event Mound Miamisburg, OH 6 Local Event X-10 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN FWP Event X-10/Y-12 Oak Ridge, TN 7 Local Event X-10/Y-12 Oak Ridge, TN FWP Event K-25 Oak Ridge, TN 8 9 10 11 12 Local Event X-10 Oak Ridge, TN EEOICPA Event, Augusta, GA 13 14 Local Event X-10 Oak Ridge, TN 15 16 17 18 19 Local Event X-10/Y-12 Oak Ridge, TN 20 21 FWP Event Mound Miamisburg, OH 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 Legend Energy Employees Occupational Illness Compensation Program Act (EEOICPA) Events Joint Outreach Task Group (JOTG) Events Local Events Former Worker Program Medical Screening Program (FWP) Events Other Events This page was last updated on February 26, 2013 Retiree Breakfast

412

Joint Outreach Task Group (JOTG) Calendar: November  

NLE Websites -- All DOE Office Websites (Extended Search)

November 2013 November 2013 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 27 28 29 30 31 1 2 3 4 5 FWP Event Mound Miamisburg, OH 6 Local Event X-10 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN FWP Event X-10/Y-12 Oak Ridge, TN 7 Local Event X-10/Y-12 Oak Ridge, TN FWP Event K-25 Oak Ridge, TN 8 9 10 11 12 13 14 Local Event X-10 Oak Ridge, TN 15 16 17 18 19 Local Event X-10/Y-12 Oak Ridge, TN Local Event Y-12 Oak Ridge, TN 20 21 FWP Event Mound Miamisburg, OH 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 Legend Energy Employees Occupational Illness Compensation Program Act (EEOICPA) Events Joint Outreach Task Group (JOTG) Events Local Events Former Worker Program Medical Screening Program (FWP) Events Other Events This page was last updated on September 16, 2013 Retiree Breakfast Former Worker Program Event

413

Remote controlled vacuum joint closure mechanism  

DOE Patents (OSTI)

A remotely operable and maintainable vacuum joint closure mechanism for a noncircular aperture is disclosed. The closure mechanism includes an extendible bellows coupled at one end to a noncircular duct and at its other end to a flange assembly having sealed grooves for establishing a high vacuum seal with the abutting surface of a facing flange which includes an aperture forming part of the system to be evacuated. A plurality of generally linear arrangements of pivotally coupled linkages and piston combinations are mounted around the outer surface of the duct and aligned along the length thereof. Each of the piston/linkage assemblies is adapted to engage the flange assembly by means of a respective piston and is further coupled to a remote controlled piston drive shaft to permit each of the linkages positioned on a respective flat outer surface of the duct to simultaneously and uniformly displace a corresponding piston and the flange assembly with which it is in contact along the length of the duct in extending the bellows to provide a high vacuum seal between the movable flange and the facing flange. A plurality of latch mechanisms are also pivotally mounted on the outside of the duct. A first end of each of the latch mechanisms is coupled to a remotely controlled latch control shaft for displacing the latch mechanism about its pivot point. In response to the pivoting displacement of the latch mechanism, a second end thereof is displaced so as to securely engage the facing flange.

Doll, David W. (San Diego, CA); Hager, E. Randolph (La Jolla, CA)

1986-01-01T23:59:59.000Z

414

The institutional needs of joint implementation projects  

SciTech Connect

In this paper, the authors discuss options for developing institutions for joint implementation (JI) projects. They focus on the tasks which are unique to JI projects or require additional institutional needs--accepting the project by the host and investor countries and assessing the project`s greenhouse gas (GHG) emission reduction or sequestration--and they suggest the types of institutions that would enhance their performance. The evaluation is based on four sets of governmental and international criteria for JI projects, the experiences of ten pilot JI projects, and the perspectives of seven collaborating authors from China, Egypt, India, Mexico, and Thailand, who interviewed relevant government and non-government staff involved in JI issue assessment in their countries. After examining the roles for potential JI institutions, they present early findings arguing for a decentralized national JI structure, which includes: (1) national governmental panels providing host country acceptance of proposed JI projects; (2) project parties providing the assessment data on the GHG reduction or sequestration for the projects; (3) technical experts calculating these GHG flows; (4) certified verification teams checking the GHG calculations; and (5) members of an international JI Secretariat training and certifying the assessors, as well as resolving challenges to the verifications. 86 refs.

Watt, E.; Sathaye, J. [Lawrence Berkeley Lab., CA (United States); Buen, O. de; Masera, O. [National Univ. of Mexico, Mexico City (Mexico); Gelil, I.A. [Organization of Energy Conservation and Planning, Cairo (Egypt); Ravindranath, N.H. [Indian Inst. of Science, Bangalore (India); Zhou, D.; Li, J. [Energy Research Inst., Beijing (China); Intarapravich, D. [Thailand Environmental Inst., Bangkok (Thailand)

1995-10-21T23:59:59.000Z

415

Jointly Sponsored Research Program. Final report  

SciTech Connect

The Jointly Sponsored Research Program (JSRP) is a US Department of Energy (DOE) program funded through the Office of Fossil Energy and administered at the Morgantown Energy Technology Center. Under this program, which has been in place since Fiscal Year 1990, DOE makes approximately $2.5 million available each year to the Energy and Environmental Research Center (EERC) to fund projects that are of current interest to industry but which still involve significant risk, thus requiring some government contribution to offset the risk if the research is to move forward. The program guidelines require that at least 50% of the project funds originate from nonfederal sources. Projects funded under the JSRP often originate under a complementary base program, which funds higher-risk projects. The projects funded in Fiscal Year 1996 addressed a wide range of Fossil Energy interests, including hot-gas filters for advanced power systems; development of cleaner, more efficient processing technologies; development of environmental control technologies; development of environmental remediation and reuse technologies; development of improved analytical techniques; and development of a beneficiation technique to broaden the use of high-sulfur coal. Descriptions and status for each of the projects funded during the past fiscal year are included in Section A of this document, Statement of Technical Progress.

NONE

1997-07-01T23:59:59.000Z

416

The Neftemash closed joint-stock company  

Science Conference Proceedings (OSTI)

The Neftemash closed joint-stock company was created from the VNIIneftemash Scientific Production Association in the privatization process in the country. Members of the Neftemash Co. are listed. This group of members determined the basic activities of the Neftemash Co. as a multifunctional scientific production complex for designing and manufacturing modern equipment for oil and gas production and refining. By having highly qualified specialists, modern enterprises, test experience, and production capacity, this company is the leading organization in Russia and the Commonwealth of Independent States (CIS) for supplying oil and gas enterprises with petroleum equipment. The Neftemash Co. designs and produces drilling, geological prospecting, and petroleum production equipment and instrumentation. It designs oil and gas refining equipment and petrochemical equipment, equipment for processing coal and liquid fuels, including integrated automated production lines. It does fundamental and applied research in materials science, welding, and corrosion protection for oil and gas production and refining equipment. It designs ecologically safe equipment complexes for drilling wells and refining oil and gas. To a significant extent the petroleum industry in Russia was developed from the activity of the All-Union Scientific Research, Design, and Construction Institute for Petroleum Machinery. Equipment designed by the institute was used to explore, develop, and exploit oil and gas fields of western Siberia, the far north, and other petroleum regions of the country.

Umanchik, N.P.

1995-07-01T23:59:59.000Z

417

The inverse kinetics method and PID compensation of the Annular Core Research Reactor.  

E-Print Network (OSTI)

??This thesis explores the development of a model describing the Annular Core Research Reactor (ACRR), the application of the inverse kinetics method to calculate the… (more)

Garnas, Benjamin

2008-01-01T23:59:59.000Z

418

Inverse beta decay reaction in $^{232}$Th and $^{233}$U fission antineutrino flux  

E-Print Network (OSTI)

Energy spectra of antineutrinos coming from $^{232}$Th and $^{233}$U neutron-induced fission are calculated, relevant inverse beta decay $\\bar{{\

G. Domogatski; V. Kopeikin; L. Mikaelyan; V. Sinev

2004-03-15T23:59:59.000Z

419

U.S.-India Joint Clean Energy Research and Development Center...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S.-India Joint Clean Energy Research and Development Center U.S.-India Joint Clean Energy Research and Development Center Funding Opportunity Announcement Prospective applicants...

420

Joint Base Lewis-McChord Innovations in Facility Energy Improvements...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Base Lewis-McChord Innovations in Facility Energy Improvements Joint Base Lewis-McChord Innovations in Facility Energy Improvements Presentation covers Innovations in...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Energy Department Announces Selections for U.S.-India Joint Clean...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Selections for U.S.-India Joint Clean Energy Research and Development Center Energy Department Announces Selections for U.S.-India Joint Clean Energy Research and Development...

422

Joint Statement on Future U.S.-Russia Nuclear Energy and Nonproliferat...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Statement on Future U.S.-Russia Nuclear Energy and Nonproliferation Collaboration Following Russian Delegation Visit to the United States Joint Statement on Future...

423

JOINT EPA/DOE STATEMENT: Radiation Monitors Confirm That No Radiation...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

JOINT EPADOE STATEMENT: Radiation Monitors Confirm That No Radiation Levels of Concern Have Reached the United States JOINT EPADOE STATEMENT: Radiation Monitors Confirm That No...

424

Low-Level Inversions over the Tropical Pacific—Thermodynamic Structure of the Boundary Layer and the Above-Inversion Moisture Structure  

Science Conference Proceedings (OSTI)

The structure of the boundary layer over a broad region of the equatorial Pacific is studied using dropwinsonde measurements made in January, February, May and June of 1979. Low-level inversions of sufficient strength to inhibit deep convection ...

Kevin A. Kloesel; Bruce A. Albrecht

1989-01-01T23:59:59.000Z

425

Joint demilitarization technology test and demonstration capabilities  

SciTech Connect

This paper provides a review of the two components of the Nevada Test Site (NTS) Demilitarization test and demonstration capabilities. Part one is a general discussion of the NTS and the many assets it offers to the Demilitarization community; and more specifically, a discussion of the NTS Open Burn/Open Detonation (OB/OD) test facility. The NTS Joint Demilitarization Technology (JDT) OB/OD Test Chamber is located at the X Tunnel facility which as been designed and constructed to contain and characterize the effluent from demilitarization activities. X Tunnel consists of a large test chamber capable of withstanding a 3,000 pound net explosive weight detonation or up to a static pressure of well over 100 pounds per square inch. The test chamber is fully instrumented to measure and collect gas and particulate samples as well as to monitor shock phenomenology. Part two is a discussion of the NTS Tactical Demilitarization Demonstration (TaDD) program currently planned for the Area 11 Technical Facility. This project will produce equipment that can dispose of unneeded tactical military rocket motors in a safe, environmentally-friendly, and timely fashion. The initial effort is the development of a demilitarization system for the disposal of excess Shillelagh missiles at the Anniston Army Depot. The prototype for this system will be assembled at the Area 11 facility taking advantage of the inherent infrastructure and proximity to numerous existing structures. Upon completion of testing, the prototype facility will become the test bed for future tactical disposal development activities. It is expected that the research and development techniques, prototype testing and production processes, and expertise developed during the Shillelagh disposal program will be applicable to follow-on tactical missile disposal programs, but with significant cost and schedule advantages.

Williams, S.M. [Bechtel Nevada, Inc., Las Vegas, NV (United States); Byrd, E.R. [Lockheed Martin Missiles and Space (United States); Decker, M.W. [Naval Air Warfare Center, Warminster, PA (United States)

1998-12-31T23:59:59.000Z

426

US, Russian Federation Sign Joint Statement on Reactor Conversion |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

US, Russian Federation Sign Joint Statement on Reactor Conversion US, Russian Federation Sign Joint Statement on Reactor Conversion US, Russian Federation Sign Joint Statement on Reactor Conversion June 26, 2012 - 12:00pm Addthis News Media Contact (202) 586-4940 This release is cross-posted from NNSA.energy.gov. MOSCOW - The U.S. and Russian Federation jointly announced today that the first stage of work defined in the Implementing Agreement between the Russian State Corporation for Atomic Energy (Rosatom) and the Department of Energy (DOE) Regarding Cooperation in Concluding Feasibility Studies of the Conversion of Russian Research Reactors of Dec. 7, 2010, has been completed. The announcement comes at the close of the most recent session of the Working Group on Nuclear Energy and Nuclear Security under the U.S.-Russia bilateral Presidential Commission, co-chaired by Daniel

427

OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OMB and CEQ Joint Memorandum on Environmental Collaboration and OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict Resolution OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict Resolution This Office of Management and Budget (OMB) and Council on Environmental Quality (CEQ) joint memorandum expands and builds on the November 28, 2005, Environmental Conflict Resolution (ECR) Memorandum, directing departments and agencies to increase the appropriate and effective use of third-party assisted environmental collaboration as well as environmental conflict resolution to resolve problems and conflicts that arise in the context of environmental, public lands, or natural resources issues, including matters related to energy, transportation, and water and land management. This memorandum supersedes and broadens the 2005 memorandum on ECR by

428

Joint Outreach Task Group Former Workers Screening Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Joint Outreach Task Group Former Workers Screening Program Joint Outreach Task Group Former Workers Screening Program The Joint Outreach Task Group (JOTG) includes representatives from HSS, Department of Labor (DOL), the National Institute for Occupational Safety and Health (NIOSH), the Offices of the Ombudsman for DOL and NIOSH, and the DOE-funded FWP projects. The JOTG was established in 2009 under the premise that agencies/programs with common goals can work together by combining resources and coordinating outreach efforts. Each involved agency has a different mission, but the missions are complementary. By working together, the agencies are better able to serve the DOE workforce. The JOTG focuses on educating the former workers on the programs and resources available to them.

429

The Joint Agricultural Weather Facility's Operational Assessment Program  

Science Conference Proceedings (OSTI)

The Joint Agricultural Weather Facility (JAWF), a cooperative effort between the Climate Analysis Center, NMC/NWS/NOAA (National Meteorological Center/National Weather Service/National Oceanic and Atmospheric Administration) and the World ...

Raymond P. Motha; Thomas R. Heddinghaus

1986-09-01T23:59:59.000Z

430

Joint Institute for Neutron Sciences | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Institute for Neutron Sciences Joint Institute for Neutron Sciences SHARE Joint Institute for Neutron Sciences JINS is located on Chestnut Ridge within the 80-acre SNS site, part of Oak Ridge National Laboratory. The Joint Institute for Neutron Sciences (JINS) was founded as a collaborative effort between Oak Ridge National Laboratory (ORNL) and The University of Tennessee to promote the use of neutron scattering in various fields of research. Through worldwide collaborations between researchers of the biological and life sciences, energy sciences, polymer science, condensed matter physics and computational sciences, a synergistic consortium will be created at ORNL to elevate the field of neutron sciences to a new level of efficacy for industry, medicine and frontier research. The goal of JINS is to serve as a gateway for users of the Spallation

431

Secretary Bodman, Director Rumyantsev Issue Joint Statement on Bratislava  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bodman, Director Rumyantsev Issue Joint Statement on Bodman, Director Rumyantsev Issue Joint Statement on Bratislava Nuclear Security Initiatives Secretary Bodman, Director Rumyantsev Issue Joint Statement on Bratislava Nuclear Security Initiatives November 9, 2005 - 2:20pm Addthis WASHINGTON, DC - U.S. Secretary of Energy Samuel Bodman and Russian Federal Atomic Energy Agency Director, Aleksandr Rumyantsev today released a joint statement on the status of the Bratislava Nuclear Security Initiative. The Bratislava Initiative was announced by President George W. Bush and Russian President Vladimir Putin in February, 2005 and aims, in part, to reduce the threat of nuclear and radiological proliferation. "The United States and Russia bear unique responsibilities in the area of nuclear nonproliferation," Secretary Bodman said. "The Bratislava

432

US, Russian Federation Sign Joint Statement on Reactor Conversion |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

US, Russian Federation Sign Joint Statement on Reactor Conversion US, Russian Federation Sign Joint Statement on Reactor Conversion US, Russian Federation Sign Joint Statement on Reactor Conversion June 26, 2012 - 12:00pm Addthis News Media Contact (202) 586-4940 This release is cross-posted from NNSA.energy.gov. MOSCOW - The U.S. and Russian Federation jointly announced today that the first stage of work defined in the Implementing Agreement between the Russian State Corporation for Atomic Energy (Rosatom) and the Department of Energy (DOE) Regarding Cooperation in Concluding Feasibility Studies of the Conversion of Russian Research Reactors of Dec. 7, 2010, has been completed. The announcement comes at the close of the most recent session of the Working Group on Nuclear Energy and Nuclear Security under the U.S.-Russia bilateral Presidential Commission, co-chaired by Daniel

433

Toledo Bend Project Joint Oper | Open Energy Information  

Open Energy Info (EERE)

Bend Project Joint Oper Bend Project Joint Oper Jump to: navigation, search Name Toledo Bend Project Joint Oper Place Texas Utility Id 19048 Utility Location Yes Ownership S NERC Location SERC NERC SERC Yes Operates Generating Plant Yes Activity Generation Yes Activity Wholesale Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates No Rates Available References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Toledo_Bend_Project_Joint_Oper&oldid=411678"

434

Explosive joints in Nb--Ti/Cu composite superconductors  

SciTech Connect

Explosive welding techniques have been applied to the joining of a Nb-Ti/ Cu composite conductor. Details of the process are given together with mechanical and electrical evaluations of the resulting joints. (auth)

Cornish, D.N.; Zbasnik, J.P.; Pattee, H.E.

1975-11-01T23:59:59.000Z

435

Past International Joint Workshops of the Engine Emissions R...  

NLE Websites -- All DOE Office Websites (Extended Search)

Past International Joint Workshops of the Engine Emissions R&D Cluster Photo of a session from a past cluster workshop, showing participants seates at tables listening to a...

436

DOE Joint Genome Institute: Preparing for a Thaw: How Arctic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Research) To answer this question, researchers from the U.S. Department of Energy (DOE) Joint Genome Institute (JGI), the Earth Sciences Division (ESD) within Berkeley Lab, and the...

437

DOE Joint Genome Institute: Opening New Frontiers: First Volume...  

NLE Websites -- All DOE Office Websites (Extended Search)

in the spirit of his goal of providing "light to the obscure," the Department of Energy Joint Genome Institute (DOE JGI) has published the initial "volume" of the Genomic...

438

Results on combinatorial joint source-channel coding  

E-Print Network (OSTI)

This paper continues the investigation of the combinatorial formulation of the joint source-channel coding problem. In particular, the connections are drawn to error-reducing codes, isometric embeddings and list-decodable ...

Kochman, Yuval

439

Some Results of Joint Measurements of Aerosol Extinction of Solar...  

NLE Websites -- All DOE Office Websites (Extended Search)

Results of Joint Measurements of Aerosol Extinction of Solar Radiation on Horizontal and Slant Paths S. M. Sakerin, D. M. Kabanov, Yu. A. Pkhalagov, and V. N. Uzhegov Institute of...

440

DOE Joint Genome Institute: Trillions Served: Massive, Complex...  

NLE Websites -- All DOE Office Websites (Extended Search)

the number of burgers served has eclipsed the billion mark, while the U.S. Department of Energy (DOE) Joint Genome Institute (JGI) will now serve up trillions of nucleotides of...

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Joint Chinese word segmentation, POS tagging and parsing  

Science Conference Proceedings (OSTI)

In this paper, we propose a novel decoding algorithm for discriminative joint Chinese word segmentation, part-of-speech (POS) tagging, and parsing. Previous work often used a pipeline method -- Chinese word segmentation followed by POS tagging and parsing, ...

Xian Qian; Yang Liu

2012-07-01T23:59:59.000Z

442

Joint extraction of entities and relations for opinion recognition  

Science Conference Proceedings (OSTI)

We present an approach for the joint extraction of entities and relations in the context of opinion recognition and analysis. We identify two types of opinion-related entities --- expressions of opinions and sources of opinions --- along with the linking ...

Yejin Choi; Eric Breck; Claire Cardie

2006-07-01T23:59:59.000Z

443

A study of discrete and continuum joint modeling techniques  

SciTech Connect

This paper presents the results of a numerical and experimental study in which finite element and discrete element techniques were used to analyze a layered polycarbonate plate model subjected to uniaxial compression. Also, the two analysis techniques were used to compute the response of an eight meter diameter drift in jointed-rock. The drift was subjected to in-situ and far-field induced thermal stresses. The finite element analyses used a continuum rock model to represent the jointed-rock. A comparison of the analyses showed that the finite element continuum joint model consistently predicted less joint slippage than did the discrete element analyses, although far-field displacements compared well.

Jung, J.; Brown, S.R.

1992-05-01T23:59:59.000Z

444

Joint pricing and inventory decision for competitive products  

E-Print Network (OSTI)

We consider the joint pricing and inventory decision problem for a single retailer who orders, stocks and sells multiple products. The products are competitive in nature, e.g., these maybe similar products from multiple ...

Ye, Kelly (Kelly Yunqing)

2008-01-01T23:59:59.000Z

445

United States -- Mexican joint ventures: A case history approach  

Science Conference Proceedings (OSTI)

Because the Mexican government has encouraged investment in Mexico by increasing the percentage of ownership of a Mexican business that a US company can hold, joint ventures are more attractive now than they had been in the past. This study provides preliminary information for US renewable energy companies who are interested in forming a joint venture with a Mexican company. This report is not intended to be a complete reference but does identifies a number of important factors that should be observed when forming a Mexican joint venture: (1)Successful joint ventures achieve the goals of each partner. (2)It is essential that all parties agree to the allocation of responsibilities. (3)Put everything in writing. (4)Research in depth the country or countries in which you are considering doing business.

Moore, N.L.; Chidester, R.J.; Hughes, K.R.; Fowler, R.A.

1993-03-01T23:59:59.000Z

446

Results of a Joint NOAA/NASA Sounder Simulation Study  

Science Conference Proceedings (OSTI)

NOAA and NASA have conducted a joint simulation study to compare the retrieval accuracy of atmospheric temperature profiles and surface skin temperature retrieved from HIRS2, the current operational infrared temperature sounder, and AMTS, a ...

N. Phillips; J. Susskind; L. McMillin

1988-02-01T23:59:59.000Z

447

Scanned_Joint_Declaration_(English).pdf | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

by Energy Ministers of G8, The People's Republic of China, India and The Republic of Korea (June 2008) Joint Statement by Energy Ministers of G8, The People's Republic of China,...

448

Seismic Capacity of Threaded, Brazed, and Grooved Pipe Joints  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SEISMIC CAPACITY OF THREADED, BRAZED AND GROOVED PIPE JOINTS Brent Gutierrez, PhD, PE George Antaki, PE, F.ASME DOE NPH Conference October 25-26, 2011 Motivation * Understand the...

449

Expansion Joint Concepts for High Temperature Insulation Systems  

E-Print Network (OSTI)

As high temperature steam and process piping expands with heat, joints begin to open between the insulation sections, resulting in increased energy loss and possible unsafe surface temperatures. Many different expansion joint designs are presently in use for both single and double layer insulation construction. However, due to the installation cost reduction associated with single layer systems and increased thickness capabilities of insulation manufacturers, much attention is being given to utilizing single layer construction as much as possible.

Harrison, M. R.

1980-01-01T23:59:59.000Z

450

Analytical inverse model for post-event attribution of plutonium  

E-Print Network (OSTI)

An integral part of deterring nuclear terrorism is the swift attribution of any event to a particular state or organization. By quickly being able to identify the responsible party after a nuclear event, appropriate people may be held accountable for their actions. Currently, there is a system in place to determine the origin of nuclear devices and materials from post-event data; however, the system requires significant time to produce an answer within acceptable error margins. Described here is a deterministic approach derived from first principles to solve the inverse problem. The derivation starts with the basic change rate equation and ends in relationships for important nuclear concentrations and device yield. This results in a computationally efficient and timely method for producing an estimate of the material attributes. This estimate can then be used as a starting point for other more detailed methods and reduce the overall computation time of the post-event forensics. This work focused on a specific type of nuclear event: a plutonium improvised nuclear device (IND) explosion. From post-event isotopic ratios, this method determines the device’s pre-event isotopic concentrations of special nuclear material. From the original isotopic concentrations, the field of possible origins for the nuclear material is narrowed. In this scenario, knowing where the nuclear material did not originate is as important as knowing where it did. The derived methodology was tested using several cases of interest including simplified and realistic cases. For the simplistic cases, only two isotopes comprised the material being fissioned. In the realistic cases, both Weapons Grade and Reactor Grade plutonium were used to cover the spectrum of possible fissile material to be used by terrorists. The methodology performed very well over the desired energy range. Errors were under two percent from the expected values for all yields under 50 kT. In the realistic cases, competing reactions caused an increase in error; however, these stayed under five percent. As expected, with an increased yield, the error continued to rise, but these errors increased linearly. A sensitivity analysis was performed on the methodology to determine the impact of uncertainty in various physical constants. The result was that the inverse methodology is not overly sensitive to perturbations in these constants.

Miller, James Christopher

2008-12-01T23:59:59.000Z

451

Iron aluminide alloy coatings and joints, and methods of forming  

DOE Patents (OSTI)

Disclosed is a method of joining two bodies together, at least one of the bodies being predominantly composed of metal, the two bodies each having a respective joint surface for joining with the joint surface of the other body, the two bodies having a respective melting point, includes the following steps: (a) providing aluminum metal and iron metal on at least one of the joint surfaces of the two bodies; (b) after providing the aluminum metal and iron metal on the one joint surface, positioning the joint surfaces of the two bodies in juxtaposition against one another with the aluminum and iron positioned therebetween; (c) heating the aluminum and iron on the juxtaposed bodies to a temperature from greater than or equal to 600 C to less than the melting point of the lower melting point body; (d) applying pressure on the juxtaposed surfaces; and (e) maintaining the pressure and the temperature for a time period effective to form the aluminum and iron into an iron aluminide alloy joint which bonds the juxtaposed surfaces and correspondingly the two bodies together. The method can also effectively be used to coat a body with an iron aluminide coating.

Wright, R.N.; Wright, J.K.; Moore, G.A.

1994-09-27T23:59:59.000Z

452

Iron aluminide alloy coatings and joints, and methods of forming  

DOE Patents (OSTI)

A method of joining two bodies together, at least one of the bodies being predominantly composed of metal, the two bodies each having a respective joint surface for joining with the joint surface of the other body, the two bodies having a respective melting point, includes the following steps: a) providing aluminum metal and iron metal on at least one of the joint surfaces of the two bodies; b) after providing the aluminum metal and iron metal on the one joint surface, positioning the joint surfaces of the two bodies in juxtaposition against one another with the aluminum and iron positioned therebetween; c) heating the aluminum and iron on the juxtaposed bodies to a temperature from greater than or equal to 600.degree. C. to less than the melting point of the lower melting point body; d) applying pressure on the juxtaposed surfaces; and e) maintaining the pressure and the temperature for a time period effective to form the aluminum and iron into an iron aluminide alloy joint which bonds the juxtaposed surfaces and correspondingly the two bodies together. The method can also effectively be used to coat a body with an iron aluminide coating.

Wright, Richard N. (Idaho Falls, ID); Wright, Julie K. (Idaho Falls, ID); Moore, Glenn A. (Idaho Falls, ID)

1994-01-01T23:59:59.000Z

453

Structural testing of the North Wind 250 composite rotor joint  

DOE Green Energy (OSTI)

The North Wind 250 wind turbine is under development at Northern Power Systems (NPS) in Moretown, VT. The turbine uses a unique, flow-through, teetered-rotor design. This design eliminates structural discontinuities at the blade/hub interface by fabricating the rotor as one continuous structural element. To accomplish this, the two blade spars are joined at the center of the rotor using a proprietary bonding technique. Fatigue tests were conducted on the full-scale rotor joint at the National Renewable Energy Laboratory (NREL). Subsequent tests are now underway to test the full-scale rotor and hub assembly to verify the design assumptions. The test articles were mounted in dedicated test fixtures. For the joint test, a constant moment was generated across the joint and parent material. Hydraulic actuators applied sinusoidal loading to the test article at levels equivalent to 90% of the extreme wind load for over one million cycles. When the loading was increased to 112% of the extreme wind load, the joint failed by buckling. Strain levels were monitored at 14 locations inside and outside of the blade joint during the test. The tests were used to qualify this critical element of the rotor for field testing and to provide information needed to improve the structural design of the joint.

Musial, W; Link, H [National Renewable Energy Lab., Golden, CO (United States); Coleman, C [Northern Power Systems, Moretown, VT (United States)

1994-05-01T23:59:59.000Z

454

Drum type fossil fueled power plant control based on fuzzy inverse MIMO model  

Science Conference Proceedings (OSTI)

In this paper, a new fuzzy controller is proposed based on inverse model of boiler-turbine system. Gain scheduling scheme is used to keep feedback rule as close as possible to optimal condition while generating plant Input/Output data. Interaction between ... Keywords: ANFIS, drum type fossil fueled power plant (FFPP), interaction, inverse model control, nonlinear model, robustness

Ali Ghaffari; Mansour Nikkhah Bahrami; Hesam Parsa

2006-06-01T23:59:59.000Z

455

Normal Inverse Gaussian Error Distributions Applied for the Positioning of Petroleum Wells  

E-Print Network (OSTI)

Normal Inverse Gaussian Error Distributions Applied for the Positioning of Petroleum Wells Tony In this paper we present a new statistical model for the positioning of petroleum wells using magnetic of a well. The normal inverse Gaussian gives a more realistic fit to the magnetic observatory data than

Eidsvik, Jo

456

The inverse scattering problem for a discrete Sturm-Liouville equation on the line  

Science Conference Proceedings (OSTI)

This paper investigates the inverse scattering problem for a discrete Sturm-Liouville equation on the entire line with coefficients that stabilize to zero in one direction. We derive a necessary and a sufficient condition on the scattering data so that the inverse problem is uniquely solvable. Bibliography: 23 titles.

Khanmamedov, Agil Kh [Baku State University, Baku (Azerbaijan)

2011-07-31T23:59:59.000Z

457

An Analytical Model of the Diurnal Oscillation of the Inversion Base Due to the Sea Breeze  

Science Conference Proceedings (OSTI)

The diurnal oscillation of the height of the inversion due to the sea breeze is studied analytically by use of a linear model. The base of the inversion over the sea moved downward during daytime and upward during nighttime. Over the land the ...

Yizhak Feliks

1994-04-01T23:59:59.000Z

458

Circulation within the Ocean Storms Area Located in the Northeast Pacific Ocean Determined by Inverse Methods  

Science Conference Proceedings (OSTI)

An inverse model was applied to hydrographic data obtained from a cruise in the autumn of 1987 in a small area (300 × 250 km) in the northeast Pacific Ocean. The inverse model used geostrophy and a linear ?-plane vorticity equation as dynamical ...

R. J. Matear

1993-04-01T23:59:59.000Z

459

Generation of pornographic blacklist and its incremental update using an inverse chi-square based method  

Science Conference Proceedings (OSTI)

This study presented an inverse chi-square based web content classification system that works along with an incremental update mechanism for incremental generation of pornographic blacklist. The proposed system, as indicated from the experimental results, ... Keywords: Incremental update, Inverse chi-square function, Pornographic blacklist, Web content classification

Lung-Hao Lee; Cheng-Jye Luh

2008-09-01T23:59:59.000Z

460

Gravity inversion using a binary formulation Richard A. Krahenbuhl* and Yaoguo Li  

E-Print Network (OSTI)

Gravity inversion using a binary formulation Richard A. Krahenbuhl* and Yaoguo Li Gravity contrast that gives rise to zero gravity response on the surface. As a result, part of the salt structure structure using gravity data can be divided into two general categories. The first are interface inversions

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Stability estimates for the inverse boundary value problem by partial Cauchy data  

E-Print Network (OSTI)

In this paper we study the inverse conductivity problem with partial data in dimension $n\\geq 3$. We derive stability estimates for this inverse problem if the conductivity has $C^{1,\\sigma}(\\bar\\Omega)\\cap H^{3/2+\\sigma}(\\Omega)$ regularity for $0<\\sigma<1$.

Ru-Yu Lai

2013-04-08T23:59:59.000Z

462

Dimensionality reduction and polynomial chaos acceleration of Bayesian inference in inverse problems  

Science Conference Proceedings (OSTI)

We consider a Bayesian approach to nonlinear inverse problems in which the unknown quantity is a spatial or temporal field, endowed with a hierarchical Gaussian process prior. Computational challenges in this construction arise from the need for repeated ... Keywords: Bayesian inference, Dimensionality reduction, Galerkin projection, Gaussian processes, Inverse problems, Karhunen-Ločve expansion, Markov chain Monte Carlo, Polynomial chaos, RKHS

Youssef M. Marzouk; Habib N. Najm

2009-04-01T23:59:59.000Z

463

A 3-D gravity inversion tool based on exploration of model possibilities  

Science Conference Proceedings (OSTI)

A computational tool for the development and implementation of a recently published method of 3-D (three dimensional) inversion for gravity data is presented. This method seeks to determine the geometry of an indefinite number of anomalous bodies with ... Keywords: anomalous density contrast, gravity anomaly, gravity inversion, model exploration, three-dimensional models

Antonio G. Camacho; Fuensanta G. Montesinos; Ricardo Vieira

2002-03-01T23:59:59.000Z

464

On inverse problems for the multidimensional relativistic Newton equation at fixed energy  

E-Print Network (OSTI)

In this paper, we consider inverse scattering and inverse boundary value problems at sufficiently large and fixed energy for the multidimensional relativistic Newton equation with an external potential $V$, $V\\in C^2$. Using known results, we obtain, in particular, theorems of uniqueness.

Alexandre Jollivet

2006-07-03T23:59:59.000Z

465

New Systolic Architectures for Inversion and Division in GF(2^m)  

Science Conference Proceedings (OSTI)

AbstractżWe present two systolic architectures for inversion and division in GF(2^m)based on a modified extended Euclidean algorithm. Our architectures are similar to those proposed by others in that they consist of two-dimensional arrays of computing ... Keywords: Finite fields, field arithmetic, inversion, division, systolic, extended Euclidean algorithm.

Zhiyuan Yan; Dilip V. Sarwate

2003-11-01T23:59:59.000Z

466

A modified Tikhonov regularization method for a spherically symmetric three-dimensional inverse heat conduction problem  

Science Conference Proceedings (OSTI)

This paper deals with a spherically symmetric three-dimensional inverse heat conduction problem of determining the internal surface temperature distribution of a hollow sphere from the measured data at a fixed location inside it. This is an ill-posed ... Keywords: Error estimate, Ill-posed problem, Regularization, Spherically symmetric inverse heat conduction problem

Wei Cheng; Chu-Li Fu; Zhi Qian

2007-07-01T23:59:59.000Z

467

Development of an adaptive fuzzy logic-based inverse dynamic model for laser cladding process  

Science Conference Proceedings (OSTI)

The precision, performance, and robustness of model-based controllers depend, to a large extent, on the accuracy of the inverse dynamic model which is incorporated in the design of the controller. Due to complex nature of the laser cladding process and ... Keywords: Adaptive fuzzy modelling, Fuzzy c-means clustering, Inverse dynamic, Laser cladding

Meysar Zeinali; Amir Khajepour

2010-12-01T23:59:59.000Z

468

Significant Inversions and Rapid In Situ Cooling at a Well-Sited Oklahoma Mesonet Station  

Science Conference Proceedings (OSTI)

The El Reno Oklahoma Mesonet (ELRE) site is one of a few Oklahoma Mesonet sites that has measured inversions of 10°C or greater between 1.5 and 9 m. Historical analyses revealed that strong inversions at ELRE have occurred because of rapid ...

Eric D. Hunt; Jeffrey B. Basara; Cynthia R. Morgan

2007-03-01T23:59:59.000Z

469

3D joint inversion of gradient and total-field magnetic data Kristofer Davis and Yaoguo Li, Center for Gravity, Electrical, and Magnetics, Colorado School of Mines, Golden,  

E-Print Network (OSTI)

field and the derivative of its source to relate both data sets to a common source distribution. Our (Nelson, 1988) as well as enhancing the conventional gridding of total-field data by creating pseudo for the total-field and gradient data using a common 3D source distribution based on relationship between

470

Restarted inverse Born series for the Schrödinger problem with discrete internal measurements  

E-Print Network (OSTI)

Convergence and stability results for the inverse Born series [Moskow and Schotland, Inverse Problems, 24:065005, 2008] are generalized to mappings between Banach spaces. We show that by restarting the inverse Born series one obtains a class of iterative methods containing the Gauss-Newton and Chebyshev-Halley methods. We use the generalized inverse Born series results to show convergence of the inverse Born series for the Schr\\"odinger problem with discrete internal measurements. In this problem, the Schr\\"odinger potential is to be recovered from a few measurements of solutions to the Schr\\"odinger equation resulting from a few different source terms. An application of this method to a problem related to transient hydraulic tomography is given, where the source terms model injection and measurement wells.

Patrick Bardsley; Fernando Guevara Vasquez

2013-09-27T23:59:59.000Z

471

Solving Inverse Detection Problems Using Passive Radiation Signatures  

SciTech Connect

The ability to reconstruct an unknown radioactive object based on its passive gamma-ray and neutron signatures is very important in homeland security applications. Often in the analysis of unknown radioactive objects, for simplicity or speed or because there is no other information, they are modeled as spherically symmetric regardless of their actual geometry. In these presentation we discuss the accuracy and implications of this approximation for decay gamma rays and for neutron-induced gamma rays. We discuss an extension of spherical raytracing (for uncollided fluxes) that allows it to be used when the exterior shielding is flat or cylindrical. We revisit some early results in boundary perturbation theory, showing that the Roussopolos estimate is the correct one to use when the quantity of interest is the flux or leakage on the boundary. We apply boundary perturbation theory to problems in which spherically symmetric systems are perturbed in asymmetric nonspherical ways. We apply mesh adaptive direct search (MADS) algorithms to object reconstructions. We present a benchmark test set that may be used to quantitatively evaluate inverse detection methods.

Favorite, Jeffrey A. [Los Alamos National Laboratory; Armstrong, Jerawan C. [Los Alamos National Laboratory; Vaquer, Pablo A. [Los Alamos National Laboratory

2012-08-15T23:59:59.000Z

472

Study of atomic physics and population inversions with plasma focus  

SciTech Connect

The plasma focus can be used to generate high temperature and high density plasmas. Neon-like plasmas have previously been studied in Z-pinches and laser produced plasmas as sources for XUV and x-ray lasers. The plasma focus provides a simple and inexpensive source for studying atomic physics of highly ionized atoms. A detailed understanding of atomic physics at high temperatures, densities, and megagauss magnetic fields is necessary for possible x-ray laser designs. Methods that are generally used for obtaining population inversions include collisional ionization of the inner shells of multi-electron atoms and ions, photoexcitation, and electron collisional excitation of ions, collisional combination of ions, and atom-ion resonant charge exchange. We will discuss some possible experiments to help understand the atomic physics under the above condition. Some ideas and calculations will be given to show the feasibility of doing atomic physics relating to x-ray lasers with a plasma focus. 13 refs., 2 figs.

Oona, H.; Hodgdon, M.L.; Rickel, D.G.; Freeman, B.L.

1989-01-01T23:59:59.000Z

473

Inverse Kriging to Enhance Spatial Resolution of Imagery  

Science Conference Proceedings (OSTI)

We describe a unique approach to image resolution enhancement, inverse kriging (IK), which takes advantage of the spatial relationship between high- and low-resolution images within an area of overlap. Once established, this mathematical relationship then can be applied across the entire low-resolution image to significantly sharpen the image. The mathematical relationship uses the spatial correlations within the low-resolution image and between the low and high spatial-resolution imagery. Two of the most important requirements of the technique are that the images be co-registered well within the resolution of the larger pixels and that the spatial structure of the training area (where the spatial correlation statistics are compared) is similar to the structure of the remaining image area where it will be applied. Testing was performed using same-sensor and multi-sensor imagery. We show results that indicate that the method does improve the low spatial-resolution imagery. The selection of a training area spatial structure similar to the area being processed is important, as areas with different spatial structure (e.g., vegetation versus buildings and roads) will produce poor results. Comparisons with bilinear interpolation demonstrate that IK could be used as an improved interpolation tool, for example, in the image-registration process.

Petrie, Gregg M. (BATTELLE (PACIFIC NW LAB)); Heasler, Patrick G. (BATTELLE (PACIFIC NW LAB)); Perry, Eileen M. (BATTELLE (PACIFIC NW LAB)); Thompson, Sandra E. (BATTELLE (PACIFIC NW LAB)); Daly, Don S. (BATTELLE (PACIFIC NW LAB))

2002-12-15T23:59:59.000Z

474

Development of an Inverse Algorithm for Resonance Inspection  

SciTech Connect

Resonance inspection (RI), which employs the natural frequency spectra shift between the good and the anomalous part populations to detect defects, is a non-destructive evaluation (NDE) technique with many advantages such as low inspection cost, high testing speed, and broad applicability to structures with complex geometry compared to other contemporary NDE methods. It has already been widely used in the automobile industry for quality inspections of safety critical parts. Unlike some conventionally used NDE methods, the current RI technology is unable to provide details, i.e. location, dimension, or types, of the flaws for the discrepant parts. Such limitation severely hinders its wide spread applications and further development. In this study, an inverse RI algorithm based on maximum correlation function is proposed to quantify the location and size of flaws for a discrepant part. A dog-bone shaped stainless steel sample with and without controlled flaws are used for algorithm development and validation. The results show that multiple flaws can be accurately pinpointed back using the algorithms developed, and the prediction accuracy decreases with increasing flaw numbers and decreasing distance between flaws.

Lai, Canhai; Xu, Wei; Sun, Xin

2012-10-01T23:59:59.000Z

475

Inverse Compton X-ray signature of AGN feedback  

E-Print Network (OSTI)

Bright AGN frequently show ultra-fast outflows (UFOs) with outflow velocities vout ! 0.1c. These outflows may be the source of AGN feedback on their host galaxies sought by galaxy formation modellers. The exact effect of the outflows on the ambient galaxy gas strongly depends on whether the shocked UFOs cool rapidly or not. This in turn depends on whether the shocked electrons share the same temperature as ions (one temperature regime; 1T) or decouple (2T), as has been recently suggested. Here we calculate the Inverse Compton spectrum emitted by such shocks, finding a broad feature potentially detectable either in mid-to-high energy X-rays (1T case) or only in the soft X-rays (2T). We argue that current observations of AGN do not seem to show evidence for the 1T component, while the limits on the 2T emission are far weaker. This suggests that UFOs are in the energy-driven regime outside the central few pc, and must pump considerable amounts of not only momentum but also energy into the ambient gas. We encoura...

Bourne, Martin A

2013-01-01T23:59:59.000Z

476

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

E-Print Network (OSTI)

Inversion of normal faults at different burial depths is studied using physical models constructed with rock and deformed at confining pressure. Models consist of a 1 cm thick limestone layer above a fault dipping 70° in a rigid medium, and are subjected to a two-stage deformation path of layer-parallel extension followed by coaxial contraction. To investigate the effects of burial depth and relative ductility on kinematics of inversion, five model suites were run in which confining pressure and recovery magnitudes were varied. In all models, a normal fault forms in the limestone during extension. Subsequent inversion is accommodated in the limestone by reverse slip on the normal fault, creation and movement along new reverse faults, and distributed fracturing and folding. The relative contribution of these mechanisms depends on the relative ductility of the rock and magnitude of inversion. Reverse slip on the normal fault and distributed fracturing occur during early stages of inversion and new reverse faults form at intermediate stages. During late stage inversion, strata with low mean ductility shorten primarily by reverse slip on the pre-existing normal fault, whereas strata with high mean ductility shorten by continued slip on reverse faults. Evidence for inversion is provided by superposed fracture fabrics in the footwall at early stages (100% recovery). This change in fracture fabric during inversion could lead to an overpressured footwall in natural inversion structures. Reverse reactivation of the normal faults may occur during coaxial contraction even though such faults are unfavorably oriented assuming typical rock friction behavior and a homogeneous stress state. Localized reverse slip on normal faults is favored when strata display low ductility and less favored when strata work-harden during extension, however, the models show that the final inversion geometry is dependent on the ductility during both phases of deformation. Even a fault that is work-hardened during extension can reactivate if the ductility during contraction is low enough.

Kuhle, Nathan John

2001-01-01T23:59:59.000Z

477

MIT Joint Program on the Science and Policy of Global Change  

E-Print Network (OSTI)

MIT Joint Program on the Science and Policy of Global Change Biofuels, Climate Policy August 2009 #12;The MIT Joint Program on the Science and Policy of Global Change is an organization Co-Directors For more information, please contact the Joint Program Office Postal Address: Joint

478

Joint development during uctuation of the regional stress eld in southern Israel  

E-Print Network (OSTI)

Joint development during ¯uctuation of the regional stress ®eld in southern Israel Yehuda Eyala Received 14 January 2000; accepted 6 June 2000 Abstract Four trends of joint sets (WNW±ESE, NW±SE, NNW contain joints parallel with the latter trend, whereas 42% contain joints parallel to the former trend

Engelder, Terry

479

ALGORITHMS FOR JOINT ESTIMATION OF ATTENUATION AND EMISSION IMAGES IN PET  

E-Print Network (OSTI)

ALGORITHMS FOR JOINT ESTIMATION OF ATTENUATION AND EMISSION IMAGES IN PET Hakan Erdogan IBM TJ information about the at- tenuating medium. To use all the available information, we propose a joint in these two scans, one can derive a joint objective function based on both scans to jointly estimate attenu

Erdogan, Hakan

480

Attachment to Joint Declaration of the Ministerial Meeting for ITER Moscow, 28th  

E-Print Network (OSTI)

Attachment to Joint Declaration of the Ministerial Meeting for ITER Moscow, 28th June 2005 Joint will be decided jointly, based upon the wishes of the non-Host as long as this serves the goal of promoting 5 May 2005 #12;Attachment to Joint Declaration of the Ministerial Meeting for ITER Moscow, 28th June

Note: This page contains sample records for the topic "time-lapse joint inversion" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Completely mechanical quick changeable joints for multipurpose explosive ordnance disposal robots  

Science Conference Proceedings (OSTI)

This paper is an investigation of completely mechanical quick changeable joints for multipurpose explosive ordnance disposal (EOD) robots. With the assistance of a quick changeable joint, an ordinary EOD robot becomes a multipurpose robot with an end ... Keywords: Joint testing, Multipurpose robot, Quick changeable joint

E. faruk Kececi

2009-07-01T23:59:59.000Z

482

Rotation capacity of partial strength steel joints with three-dimensional finite element approach  

Science Conference Proceedings (OSTI)

This paper presents a finite element analysis of partial strength steel joints. The joint configurations are drawn from a previous experimental study, with good prediction shown by the finite element model. Failure of the joint is confined to the end ... Keywords: Ductile fracture, Finite element, Structural joint

Ana M. GirăO Coelho

2013-01-01T23:59:59.000Z

483

The most pervasive systematic joints hosted by Devonian black shale of the Appa-  

E-Print Network (OSTI)

ABSTRACT The most pervasive systematic joints hosted by Devonian black shale of the Appa- lachian equivalent black shale of the distal, shallower region of the delta to the west, 25% of the joint inter into and abutting cross- fold joints. East-northeast joints in the distal shale propagated early but were neither

Engelder, Terry

484

DOE Joint Genome Institute 2008 Progress Report  

Science Conference Proceedings (OSTI)

While initially a virtual institute, the driving force behind the creation of the DOE Joint Genome Institute in Walnut Creek, California in the Fall of 1999 was the Department of Energy's commitment to sequencing the human genome. With the publication in 2004 of a trio of manuscripts describing the finished 'DOE Human Chromosomes', the Institute successfully completed its human genome mission. In the time between the creation of the Department of Energy Joint Genome Institute (DOE JGI) and completion of the Human Genome Project, sequencing and its role in biology spread to fields extending far beyond what could be imagined when the Human Genome Project first began. Accordingly, the targets of the DOE JGI's sequencing activities changed, moving from a single human genome to the genomes of large numbers of microbes, plants, and other organisms, and the community of users of DOE JGI data similarly expanded and diversified. Transitioning into operating as a user facility, the DOE JGI modeled itself after other DOE user facilities, such as synchrotron light sources and supercomputer facilities, empowering the science of large numbers of investigators working in areas of relevance to energy and the environment. The JGI's approach to being a user facility is based on the concept that by focusing state-of-the-art sequencing and analysis capabilities on the best peer-reviewed ideas drawn from a broad community of scientists, the DOE JGI will effectively encourage creative approaches to DOE mission areas and produce important science. This clearly has occurred, only partially reflected in the fact that the DOE JGI has played a major role in more than 45 papers published in just the past three years alone in Nature and Science. The involvement of a large and engaged community of users working on important problems has helped maximize the impact of JGI science. A seismic technological change is presently underway at the JGI. The Sanger capillary-based sequencing process that dominated how sequencing was done in the last decade is being replaced by a variety of new processes and sequencing instruments. The JGI, with an increasing number of next-generation sequencers, whose throughput is 100- to 1,000-fold greater than the Sanger capillary-based sequencers, is increasingly focused in new directions on projects of scale and complexity not previously attempted. These new directions for the JGI come, in part, from the 2008 National Research Council report on the goals of the National Plant Genome Initiative as well as the 2007 National Research Council report on the New Science of Metagenomics. Both reports outline a crucial need for systematic large-scale surveys of the plant and microbial components of the biosphere as well as an increasing need for large-scale analysis capabilities to meet the challenge of converting sequence data into knowledge. The JGI is extensively discussed in both reports as vital to progress in these fields of major national interest. JGI's future plan for plants and microbes includes a systematic approach for investigation of these organisms at a scale requiring the special capabilities of the JGI to generate, manage, and analyze the datasets. JGI will generate and provide not only community access to these plant and microbial datasets, but also the tools for analyzing them. These activities will produce essential knowledge that will be needed if we are to be able to respond to the world's energy and environmental challenges. As the JGI Plant and Microbial programs advance, the JGI as a user facility is also evolving. The Institute has been highly successful in bending its technical and analytical skills to help users solve large complex problems of major importance, and that effort will continue unabated. The JGI will increasingly move from a central focus on 'one-off' user projects coming from small user communities to much larger scale projects driven by systematic and problem-focused approaches to selection of sequencing targets. Entire communities of scientists working in a particular field, such as feeds

Gilbert, David

2009-03-12T23:59:59.000Z

485

Efficient Inversion of Multi-frequency and Multi-source Electromagnetic Data: Final report  

Science Conference Proceedings (OSTI)

BES grant DE-FG02-06ER15819 supported efforts at Oregon State University (OSU) to develop improved inversion methods for 3D subsurface electromagnetic (EM) imaging. Three interrelated activities have been supported by this grant, and its predecessor (DE-FG02-06ER15818): (1) collaboration with a former student of the PI, Dr. Weerachai Siripunvaraporn (now Professor at Mahidol University in Bangkok, Thailand) on developing and refining inversion methods for 3D Magnetotelluric (MT) data . (2) Development at Oregon State University of a new modular system of computer codes for EM inversion, and initial testing and application of this inversion on several large field data sets. (3) Research on more efficient approaches to multi-transmitter EM inverse problems, to optimize use of expensive data sensitivity calculations needed for gradient based inversion schemes. The last of these activities was the main motivation for this research project, but the first two activities were important enabling steps that produced useful products and results in their own right, including freely avaialable software for 3D inversion of EM geophysical data.

Gary D. Egbert

2013-04-10T23:59:59.000Z

486

1 Lossy Electric Transmission Line Soft Fault Diagnosis: an Inverse Scattering Approach  

E-Print Network (OSTI)

Abstract—In this paper, the diagnosis of soft faults in lossy electric transmission lines is studied through the inverse scattering approach. The considered soft faults are modeled as continuous spatial variations of distributed characteristic parameters of transmission lines. The diagnosis of such faults from reflection and transmission coefficients measured at the ends of a line can be formulated as an inverse problem. The relationship between this inverse problem and the inverse scattering theory has been studied by Jaulent in 1982 through transformations from the telegrapher’s equations of transmission lines to Zakharov-Shabat equations. The present paper clarifies and completes the computation of the theoretic scattering data required by the inverse scattering transform from the practically measured engineering scattering data. The inverse scattering method is then applied to numerically simulated lossy transmission lines to confirm the feasibility of the studied approach to soft fault diagnosis. Index Terms—inverse scattering, lossy transmission line, soft fault diagnosis, telegrapher’s equations, Zakharov-Shabat equations. I.

Huaibin Tang; Qinghua Zhang

2010-01-01T23:59:59.000Z

487

Anomaly-free perturbations with inverse-volume and holonomy corrections in Loop Quantum Cosmology  

E-Print Network (OSTI)

This article addresses the issue of the closure of the algebra of constraints for generic (cosmological) perturbations when taking into account simultaneously the two main corrections of effective loop quantum cosmology, namely the holonomy and the inverse-volume terms. Previous works on either the holonomy or the inverse volume case are reviewed and generalized. In the inverse-volume case, we point out new possibilities. An anomaly-free solution including both corrections is found for perturbations, and the corresponding equations of motion are derived.

Thomas Cailleteau; Linda Linsefors; Aurelien Barrau

2013-07-19T23:59:59.000Z

488

A genetic algorithm approach to a neural-network-based inverse kinematics solution of robotic manipulators based on error minimization  

Science Conference Proceedings (OSTI)

The solution of the inverse kinematics problem is fundamental in robot control. Many traditional inverse kinematics problem solutions, such as the geometric, iterative, and algebraic approaches, are inadequate for redundant robots. Recently, much attention ... Keywords: 6-Degree-of-freedom robot, Elman networks, Genetic algorithms, Inverse kinematics problem, Neural networks, Robotics

Ra?It KöKer

2013-02-01T23:59:59.000Z

489

Joint Outreach Task Group Video Series | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Outreach Task Group Video Series Joint Outreach Task Group Video Series Joint Outreach Task Group Video Series Greeting: Inter-Agency Partnership, Commitment, and Service to the American workers The purpose of this video series is to provide an overview of the roles and responsibilities of the federal government offices and entities involved in the Energy Employees Occupational Illness Compensation Program Act (EEOIOCPA) and the Former Worker Medical Screening Program (FWP), two programs that serve eligible workers from the Department of Energy (DOE). In the interest of combining resources, since both the EEOICPA and FWP serve a similar population of workers, the federal entities have partnered to hold local outreach meetings in and around active or closed DOE sites. These meetings have been very successful, but we realize not everyone can

490

U.S. - Pakistan Joint Press Statement | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Pakistan Joint Press Statement - Pakistan Joint Press Statement U.S. - Pakistan Joint Press Statement March 13, 2006 - 11:50am Addthis ISLAMABAD, PAKISTAN - As agreed during President Bush's visit to Pakistan on 3-4 March 2006, U.S. Secretary of Energy Samuel Bodman visited Islamabad today to discuss a wide range of issues related to Pakistan's growing energy needs. Secretary Bodman's visit symbolizes the strengthened and expanded relationship between the United States and Pakistan over the last five years. Closer U.S.-Pakistan ties and cooperation have helped to bolster Pakistan's economy, which registered the second fastest growth in Asia last year. To continue this solid economic growth, Pakistan must have sufficient energy through a broad range of energy sources to ensure its energy security.

491

Low Dose Radiation Research Program: DOE / NASA Joint Funded Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

DOE/NASA Joint Funded Projects DOE/NASA Joint Funded Projects NASA Source Photo Space explorers are subject to exposure to low dose ionizing radiation. Research that helps determine health risks from this exposure is funded by NASA and DOE. Source: NASA DOE's Low Dose Program and the National Aeronautics and Space Administration (NASA) jointly fund new research to develop a better scientific basis for understanding risks to humans from exposures to low doses or low fluences of ionizing radiation. Research must focus on elucidating molecular mechanisms and pathways involved in normal radiobiological responses to low dose exposure, and must have the potential to ultimately increase understanding of health outcomes from radiation exposures that are at or near current workplace exposure

492

Tanzania-Joint Programme on Resource Efficient and Cleaner Production  

Open Energy Info (EERE)

Tanzania-Joint Programme on Resource Efficient and Cleaner Production Tanzania-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Jump to: navigation, search Name Tanzania-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Agency/Company /Organization United Nations Industrial Development Organization (UNIDO), United Nations Environment Programme (UNEP) Partner Ministry of Energy, Ministry of Planning, Ministry of Finance, Ministry of Environment, Ministry of Industry Sector Climate, Energy, Water Focus Area Renewable Energy, Non-renewable Energy, Agriculture, Economic Development, Goods and Materials, Industry, People and Policy, Water Conservation Topics Background analysis, Co-benefits assessment, - Environmental and Biodiversity, - Health, - Macroeconomic, Finance, GHG inventory, Implementation, Low emission development planning, -LEDS, -NAMA, -Roadmap, -TNA, Market analysis, Pathways analysis, Policies/deployment programs, Resource assessment, Technology characterizations

493

Feature - U.S.-Sweden Joint PHEV Research  

NLE Websites -- All DOE Office Websites (Extended Search)

U.S.-Sweden Joint PHEV Research U.S.-Sweden Joint PHEV Research How the Smart Charge System Works How the Smart Charge System Works Looking to jointly develop new plug-in hybrid vehicle (PHEV) technology and accelerate its consumer acceptance and commercialization, the U.S. Department of Energy (DOE) and Sweden signed a Memorandum of Understanding (MOU) in July for a one year, $1 million cost-sharing agreement to be equally funded by DOE and the Swedish Energy Agency. Through contacts developed over many years conducting international technology assessment for the Department of Energy, Argonne National Laboratory initiated the MOU, which was signed by DOE Assistant Secretary Alexander Karsner and Director General of the Swedish Energy Agency Tomas KĂĄberger, on the Swedish island of Gotland. The ceremony included comments

494

2010 Joint Effectiveness Review of Hanford Bldg 336 Corrective Actions  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Joint Assessment of the Effectiveness of Joint Assessment of the Effectiveness of Corrective Actions for the Building 336 Accident, July 2010 The U.S. Department of Energy, Office of Independent Oversight, within the Office of Health, Safety and Security (HSS), and the Richland Operations Office (RL) performed a joint effectiveness assessment of the corrective actions taken by Washington Closure Hanford, LLC (WCH) in response to the Building 336 Fall Event. The review was conducted from July 12-21, 2010, by a team consisting of four HSS and six RL personnel. The scope of the assessment included evaluation of work control, fall protection, quality assurance, and conduct of operations. Criteria Review and Approach Documents (CRADs) were generated for each functional area. The CRADs focused on the Judgments of Need (JONs) from the July 2009 Building 336 Fall

495

Ethiopia-Joint Programme on Resource Efficient and Cleaner Production  

Open Energy Info (EERE)

Ethiopia-Joint Programme on Resource Efficient and Cleaner Production Ethiopia-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Jump to: navigation, search Name Ethiopia-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Agency/Company /Organization United Nations Industrial Development Organization (UNIDO), United Nations Environment Programme (UNEP) Partner Ministry of Energy, Ministry of Planning, Ministry of Finance, Ministry of Environment, Ministry of Industry Sector Climate, Energy, Water Focus Area Renewable Energy, Non-renewable Energy, Agriculture, Economic Development, Goods and Materials, Industry, People and Policy, Water Conservation Topics Background analysis, Co-benefits assessment, - Environmental and Biodiversity, - Health, - Macroeconomic, Finance, GHG inventory, Implementation, Low emission development planning, -LEDS, -NAMA, -Roadmap, -TNA, Market analysis, Pathways analysis, Policies/deployment programs, Resource assessment, Technology characterizations

496

Rooted in Wonder: Joint Genome Institute Study Reveals Amazing World  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rooted in Wonder: Joint Genome Institute Study Reveals Amazing Rooted in Wonder: Joint Genome Institute Study Reveals Amazing World Underfoot Rooted in Wonder: Joint Genome Institute Study Reveals Amazing World Underfoot August 13, 2012 - 2:33pm Addthis By developing a better understanding of the microbes that affect the growth of other plants (crops like corn or wheat) researchers may be able to improve their growth -- or provide better care for them in times of drought. By developing a better understanding of the microbes that affect the growth of other plants (crops like corn or wheat) researchers may be able to improve their growth -- or provide better care for them in times of drought. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What Is A Weed It's also known as a mouse-ear cress. The scientific name is Arababidopsis thaliana.

497

Guatemala-Joint Programme on Resource Efficient and Cleaner Production  

Open Energy Info (EERE)

Guatemala-Joint Programme on Resource Efficient and Cleaner Production Guatemala-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Jump to: navigation, search Name Guatemala-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Agency/Company /Organization United Nations Industrial Development Organization (UNIDO), United Nations Environment Programme (UNEP) Partner Ministry of Energy, Ministry of Planning, Ministry of Finance, Ministry of Environment, Ministry of Industry Sector Climate, Energy, Water Focus Area Renewable Energy, Non-renewable Energy, Agriculture, Economic Development, Goods and Materials, Industry, People and Policy, Water Conservation Topics Background analysis, Co-benefits assessment, - Environmental and Biodiversity, - Health, - Macroeconomic, Finance, GHG inventory, Implementation, Low emission development planning, -LEDS, -NAMA, -Roadmap, -TNA, Market analysis, Pathways analysis, Policies/deployment programs, Resource assessment, Technology characterizations

498

Honduras-Joint Programme on Resource Efficient and Cleaner Production  

Open Energy Info (EERE)

Honduras-Joint Programme on Resource Efficient and Cleaner Production Honduras-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Jump to: navigation, search Name Honduras-Joint Programme on Resource Efficient and Cleaner Production (RECP) in Developing and Transition Countries Agency/Company /Organization United Nations Industrial Development Organization (UNIDO), United Nations Environment Programme (UNEP) Partner Ministry of Energy, Ministry of Planning, Ministry of Finance, Ministry of Environment, Ministry of Industry Sector Climate, Energy, Water Focus Area Renewable Energy, Non-renewable Energy, Agriculture, Economic Development, Goods and Materials, Industry, People and Policy, Water Conservation Topics Background analysis, Co-benefits assessment, - Environmental and Biodiversity, - Health, - Macroeconomic, Finance, GHG inventory, Implementation, Low emission development planning, -LEDS, -NAMA, -Roadmap, -TNA, Market analysis, Pathways analysis, Policies/deployment programs, Resource assessment, Technology characterizations