Sample records for regular midgrade premium

  1. Energy Information Administration/Petroleum Marketing Annual

    U.S. Energy Information Administration (EIA) Indexed Site

    03 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon Excluding Taxes) Geographic Area Year Regular Midgrade Premium...

  2. Premium Efficient Motors

    E-Print Network [OSTI]

    Moser, P. R.

    1984-01-01T23:59:59.000Z

    Premium efficient motors are available which convert electrical energy into mechanical energy with fewer losses than the more standard motors. The fewer losses in these motors are due to changes in the motor design and improved manufacturing methods...

  3. Why Do Inner City Residents Pay Higher Premiums? The Determinants of Automobile Insurance Premiums

    E-Print Network [OSTI]

    Ong, Paul M.; Stoll, Michael A.

    2008-01-01T23:59:59.000Z

    The Determinants of Automobile Insurance Premiums Paul M.The Determinants of Automobile Insurance Premiums Abstractplace-based component of automobile insurance premiums. We

  4. Gasoline marketing

    SciTech Connect (OSTI)

    Metzenbaum, H.M.

    1991-02-01T23:59:59.000Z

    Consumers have the option of purchasing several different grades of unleaded gasoline regular, mid-grade, and premium which are classified according to an octane rating. Because of concern that consumers may be needlessly buying higher priced premium unleaded gasoline for their automobiles when regular unleaded gasoline would meet their needs, this paper determines whether consumers were buying premium gasoline that they may not need, whether the higher retail price of premium gasoline includes a price mark-up added between the refinery and the retail pump which is greater than that included in the retail price for regular gasoline, and possible reasons for the price differences between premium and regular gasoline.

  5. Equity Risk Premium and Insecure Property Rights

    E-Print Network [OSTI]

    Magin, Konstantin

    2009-01-01T23:59:59.000Z

    Paper # 2009 -01 Equity Risk and Insecure Property Rightsof California Berkeley Equity Risk Premium and InsecureHow much of the equity risk premium puzzle can be attributed

  6. Factors Affecting Option Premium Values

    E-Print Network [OSTI]

    Johnson, Jason; Smith, Jackie; Dhuyvetter, Kevin C.; Waller, Mark L.

    1999-06-23T23:59:59.000Z

    Factors Affecting Option Premium Values Jason Johnson, Jackie Smith, Kevin Dhuyvetter and Mark Waller* Put Options Hedging in the futures market with options is much like buying an insurance policy to protect commodity sellers against declining...

  7. Equity Risk Premium and Insecure Property Right

    E-Print Network [OSTI]

    Magin, Konstantin

    2013-01-01T23:59:59.000Z

    Magin, K. , 2012. The Equity Risk Premium Puzzle: A Res-Edelstein, The Coleman Fung Risk Management Research CenterMagin, K. , 2009. Equity Risk Premium and Insecure Property

  8. Flexibility Premium in Marketable Permits

    E-Print Network [OSTI]

    Macrina, Andrea

    & solutions Problem: The problem of (air) pollution and the associated market failure had long been a part of Pollution Markets for permits Substitution Principle In a Nutshell The Premium The Model Solution Results Taschini London School of Economics Economics of Pollution Markets for permits Substitution Principle

  9. Argonne Premium Coal Sample Bank The Argonne Premium Coal (APC) Sample Bank can supply

    E-Print Network [OSTI]

    Maranas, Costas

    Argonne Premium Coal Sample Bank Background Overview T The Argonne Premium Coal (APC) Sample Bank can supply researchers with highly uniform, well-protected coal samples unexposed to oxygen. Researchers investigating coal structure, properties, and behavior can benefit greatly from these samples

  10. Day-Ahead premiums on the Midwest ISO

    SciTech Connect (OSTI)

    Bowden, Nicholas; Hu, Su; Payne, James

    2009-03-15T23:59:59.000Z

    An examination of day-ahead premiums for the Midwest ISO from September 2005 to December 2007 reveals that premiums are positive and statistically significant across all five hubs, indicating inefficiency in the Midwest wholesale electricity market. Further, day-ahead premiums exhibit monthly seasonal variation with some indication of the day-ahead premiums declining over time in three of the five hubs. (author)

  11. Oil prices and government bond risk premiums Herv Alexandre*

    E-Print Network [OSTI]

    Boyer, Edmond

    Oil prices and government bond risk premiums By Hervé Alexandre*º Antonin de Benoist * Abstract : This article analyses the impact of oil price on bond risk premiums issued by emerging economies. No empirical study has yet focussed on the effects of the oil price on government bond risk premiums. We develop

  12. Premium Efficiency Motor Selection and Application Guide - A...

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

    handbook informs new motor purchase decisions by identifying energy and cost savings that can come from replacing motors with premium efficiency units. The handbook provides an...

  13. When to Purchase Premium Efficiency Motors

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric VehicleCenters | Department ofofto Purchase Premium Efficiency Motors

  14. StationaryEnvironment ResidentialTransportation Premium Power Advanced High Efficiency, Quick Start Fuel

    E-Print Network [OSTI]

    Premium Power Agenda STARTM (1999-2003) ­ Substrate based Transportation application Autothermal ReformerEnvironment Residential Stationary Premium Power STAR Fuel Processor · Autothermal reformer · Substrate-based catalysts

  15. Energy Information Administration/Petroleum Marketing Annual

    Gasoline and Diesel Fuel Update (EIA)

    9 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  16. Energy Information Administration/Petroleum Marketing Annual

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    8 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  17. untitled

    Gasoline and Diesel Fuel Update (EIA)

    7 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  18. X:\\L6046\\Data_Publication\\Pma\\current\\ventura\\pma.vp

    U.S. Energy Information Administration (EIA) Indexed Site

    2 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  19. X:\\L6046\\Data_Publication\\Pma\\current\\ventura\\pma.vp

    U.S. Energy Information Administration (EIA) Indexed Site

    5 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  20. X:\\L6046\\Data_Publication\\Pma\\current\\ventura\\pma.vp

    U.S. Energy Information Administration (EIA) Indexed Site

    1 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  1. X:\\L6046\\Data_Publication\\Pma\\current\\ventura\\pma.vp

    U.S. Energy Information Administration (EIA) Indexed Site

    8 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, and PAD District (Cents per Gallon Excluding Taxes) Geographic Area Month Regular Midgrade Sales to End Users...

  2. Conservation Behavior: From Voluntary Restraint to a Voluntary Price Premium*

    E-Print Network [OSTI]

    predictions of the model in an empirical study of household electricity consumption with introduction of a price-premium, green-electricity program. We ...nd evidence of voluntary restraint and its relation test its predictions in an empirical study of household demand for electricity in Traverse City

  3. Sandia Energy - Price Premiums for Solar Home Sales

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution Grid IntegrationOffshoreLiveSustainablePrice Premiums for

  4. Premium Ventilation Package Testing Short-Term Monitoring Report Task 7

    E-Print Network [OSTI]

    Premium Ventilation Package Testing Short-Term Monitoring Report ­ Task 7 Review Draft Submittal. 00038702 RTU AirCarePlus & Premium Ventilation Program COTR - Jack Callahan (503) 230-4496 / jmcallahan Ventilation Package Testing PECI Short-Term Monitoring Report ­ Task 7 REVIEW DRAFT: 9/14/2009 2 Table

  5. Users Handbook for the Argonne Premium Coal Sample Program

    SciTech Connect (OSTI)

    Vorres, K.S.

    1993-10-01T23:59:59.000Z

    This Users Handbook for the Argonne Premium Coal Samples provides the recipients of those samples with information that will enhance the value of the samples, to permit greater opportunities to compare their work with that of others, and aid in correlations that can improve the value to all users. It is hoped that this document will foster a spirit of cooperation and collaboration such that the field of basic coal chemistry may be a more efficient and rewarding endeavor for all who participate. The different sections are intended to stand alone. For this reason some of the information may be found in several places. The handbook is also intended to be a dynamic document, constantly subject to change through additions and improvements. Please feel free to write to the editor with your comments and suggestions.

  6. Export premium: Why some logs are worth more abroad. Forest Service research paper

    SciTech Connect (OSTI)

    Flora, D.F.; McGinnis, W.J.; Lane, C.L.

    1993-07-01T23:59:59.000Z

    Throughout a century of log exports from the Pacific Northwest, export logs have been associated with higher prices than logs sold in the domestic market. Conventional wisdom currently maintains this perception that any export log is worth more than its domestic counterpart. The export-domestic difference, or export premium, seems to belie reason. Why would foreign buyers be willing to pay more than U.S. customers for the same log. In reality, do they. If they do, why do offshore purchasers not shift to inland logs, so that the premium would dwindle. Discussed here are circumstances that do and do not foster a continuing export premium.

  7. Premium performance heating oil - Part 2, Field trial results

    SciTech Connect (OSTI)

    Jetter, S.M.; Hoskin, D.; McClintock, W.R. [Mobil Oil Corp., Paulsboro, NJ (United States)] [and others

    1996-07-01T23:59:59.000Z

    Limited field trial results of a heating oil additive package developed to minimize unscheduled maintenance indicate that it achieves its goal of keeping heating oil systems cleaner. The multifunctional additive package was developed to provide improved fuel oxidation stability, improved corrosion protection, and dispersency. This combination of performance benefits was chosen because we believed it would retard the formation of sludge, as well as allow sludge already present to be carried through the system without fouling the fuel system components (dispersency should keep sludge particles small so they pass through the filtering system). Since many unscheduled maintenance calls are linked to fouling of the fuel filtering system, the overall goal of this technology is to reduce these maintenance calls. Photographic evidence shows that the additive package not only reduces the amount of sludge formed, but even removes existing sludge from filters and pump strainers. This {open_quotes}clean-up{close_quotes} performance is provided trouble free: we found no indication that nozzle/burner performance was impaired by dispersing sludge from filters and pump strainers. Qualitative assessments from specific accounts that used the premium heating oil also show marked reductions in unscheduled maintenance.

  8. Create a Consortium and Develop Premium Carbon Products from Coal

    SciTech Connect (OSTI)

    Frank Rusinko; John Andresen; Jennifer E. Hill; Harold H. Schobert; Bruce G. Miller

    2006-01-01T23:59:59.000Z

    The objective of these projects was to investigate alternative technologies for non-fuel uses of coal. Special emphasis was placed on developing premium carbon products from coal-derived feedstocks. A total of 14 projects, which are the 2003 Research Projects, are reported herein. These projects were categorized into three overall objectives. They are: (1) To explore new applications for the use of anthracite in order to improve its marketability; (2) To effectively minimize environmental damage caused by mercury emissions, CO{sub 2} emissions, and coal impounds; and (3) To continue to increase our understanding of coal properties and establish coal usage in non-fuel industries. Research was completed in laboratories throughout the United States. Most research was performed on a bench-scale level with the intent of scaling up if preliminary tests proved successful. These projects resulted in many potential applications for coal-derived feedstocks. These include: (1) Use of anthracite as a sorbent to capture CO{sub 2} emissions; (2) Use of anthracite-based carbon as a catalyst; (3) Use of processed anthracite in carbon electrodes and carbon black; (4) Use of raw coal refuse for producing activated carbon; (5) Reusable PACs to recycle captured mercury; (6) Use of combustion and gasification chars to capture mercury from coal-fired power plants; (7) Development of a synthetic coal tar enamel; (8) Use of alternative binder pitches in aluminum anodes; (9) Use of Solvent Extracted Carbon Ore (SECO) to fuel a carbon fuel cell; (10) Production of a low cost coal-derived turbostratic carbon powder for structural applications; (11) Production of high-value carbon fibers and foams via the co-processing of a low-cost coal extract pitch with well-dispersed carbon nanotubes; (12) Use of carbon from fly ash as metallurgical carbon; (13) Production of bulk carbon fiber for concrete reinforcement; and (14) Characterizing coal solvent extraction processes. Although some of the projects funded did not meet their original goals, the overall objectives of the CPCPC were completed as many new applications for coal-derived feedstocks have been researched. Future research in many of these areas is necessary before implementation into industry.

  9. Reconnecting Money to Inflation: The Role of the External Finance Premium

    E-Print Network [OSTI]

    Chadha, Jagjit S; Corrado, Luisa; Holly, Sean

    of the external ?nance premium (EFP) for the US. This is the di¤erence between Moody?s Aaa and Baa rated long maturity corporate bond rate. We also include a plot of the growth of real (M2) money balances. For much of the period the external ?nance premium... .e. the share of monitoring costs in loan costs, and 13 The yield on government bonds is the benchmark rate, RT ; minus the liquidity service on bonds: RBt = R T t #0; #20; #30; c#21; (ct + #21;t)#0; #18; #30; c#21; #0; 1 #19; t #21; ; (17) where (ct + #21;t...

  10. Probabilistic regular graphs

    E-Print Network [OSTI]

    Bertrand, Nathalie; 10.4204/EPTCS.39.6

    2010-01-01T23:59:59.000Z

    Deterministic graph grammars generate regular graphs, that form a structural extension of configuration graphs of pushdown systems. In this paper, we study a probabilistic extension of regular graphs obtained by labelling the terminal arcs of the graph grammars by probabilities. Stochastic properties of these graphs are expressed using PCTL, a probabilistic extension of computation tree logic. We present here an algorithm to perform approximate verification of PCTL formulae. Moreover, we prove that the exact model-checking problem for PCTL on probabilistic regular graphs is undecidable, unless restricting to qualitative properties. Our results generalise those of EKM06, on probabilistic pushdown automata, using similar methods combined with graph grammars techniques.

  11. Eco-labeling Strategies and Price-Premium: The Wine Industry Puzzle

    E-Print Network [OSTI]

    Delmas, Magali

    1 Eco-labeling Strategies and Price-Premium: The Wine Industry Puzzle Magali A. Delmas University with the actual label. In the context of the wine industry, we show that eco-certification leads to a price their customer about it. Frog's Leap Winery in Rutherford, 3 The OTA 2006 Manufacturer Survey Overview a

  12. Regularizing Inverse Problems

    E-Print Network [OSTI]

    Wang, Fang

    2014-06-26T23:59:59.000Z

    (q) include ?q??(2@L^(2 ) )??q??(2@H^(1) ), |q|BV and |q|TV. However, each of these has its limitations. In this work, we develop a novel H^(s) seminorm regularization method and present numerical results for model problems. This method relies...

  13. Selling Into the Sun: Price Premium Analysis of a Multi-State Dataset of Solar Homes

    Broader source: Energy.gov [DOE]

    Homes with solar photovoltaic (PV) systems have multiplied in the United States recently, reaching more than half a million in 2014, in part due to plummeting PV costs and innovative financing options. As PV systems become an increasingly common feature of U.S. homes, the ability to assess the value of these homes appropriately will become increasingly important. At the same time, capturing the value of PV to homes will be important for facilitating a robust residential PV market. Appraisers and real estate agents have made strides toward valuing PV homes, and several limited studies have suggested the presence of PV home premiums; however, gaps remain in understanding these premiums for housing markets nationwide. To fill these gaps, researchers from Lawrence Berkeley National Laboratory (LBNL) and their collaborators from other institutions conducted the most comprehensive PV home premium analysis to date. The study more than doubles the number of PV home sales previously analyzed, examines transactions in eight states, and spans the years 2002–2013. The results impart confidence that PV consistently adds value across a variety of states, housing and PV markets, and home types.

  14. A one-time opportunity to expand the market for premium efficiency motors

    SciTech Connect (OSTI)

    Gordon, F.; Tumidaj, L.; Hoernlein, D.; Coakley, S.

    1997-07-01T23:59:59.000Z

    A mid-Atlantic utility conducted a detailed research study on their motors market. The study showed that their motor loads come mostly from motors under 50 horsepower, and predominantly from industry. The proportion of premium-efficiency motor sales is very low relative to other areas which, unlike this utility's service territory, have a history of rebate programs. Most sales in this utility's territory are for replacement motors. Manufacturers are planning to create new lines of motors which meet the 1997 federal minimum motor-efficiency manufacturing standard, but are less efficient than premium motors. Few of these motors are on the market yet. The mandatory federal efficiency standard creates a unique, one-time situation where premium-efficiency motors will be a better-established and more familiar product among customers and vendors than less efficient motors. The utility has begun a motors rebate and technical assistance program which is intended to use this one-time opportunity to significantly expand the market for premium motors. Rebates are tied to the new Consortium for Energy Efficiency motor standards to ensure a common message to manufacturers among utilities. While the majority of premium motors available locally already meet the standard, this will encourage manufacturers to bring the rest of their offerings in line. Like many motors programs, this program will offer rebates, marketing, and technical assistance. However, the program design calls for a short-term (three year), very intense effort, including a rebate set at 100% of incremental cost, a short-term vendor bonus, and intensive marketing to large customers. Additionally, the large savings per motor in 1997 (when the baseline is inefficient standard motors) will justify a more generous payment in the first year. Many other US utility motor rebate programs have offered less generous incentives and used less intensive marketing, but have had only marginal impacts on markets (often 20--30%), or have taken many years to have an impact. This program will test the theory that it is better to strike hard at the right moment than to gnaw at the edges of a market for many years. While the program was designed for one utility, the overall approach would be more effective at working with vendors and customers if utilities joined together to sponsor a similar program with common terms and single redemption centers. This may be an option in the coming months.

  15. Premium Efficiency Motor Selection And Application Guide: A Guidebook for Industry

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in235-1DepartmentPreheatedDepartmentofEA-97-12 |— ADepartmentPREMIUM

  16. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM"PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    SciTech Connect (OSTI)

    Norwood, Zack; Lipman, Timothy; Stadler, Michael; Marnay, Chris

    2010-06-01T23:59:59.000Z

    The effectiveness of combined heat and power (CHP) systems for power interruption intolerant,"premium power," facilities is the focus of this study. Through three real-world case studies and economic cost minimization modeling, the economic and environmental performance of"premium power" CHP is analyzed. The results of the analysis for a brewery, data center, and hospital lead to some interesting conclusions about CHP limited to the specific CHP technologies installed at those sites. Firstly, facilities with high heating loads prove to be the most appropriate for CHP installations from a purely economic standpoint. Secondly, waste heat driven thermal cooling systems are only economically attractive if the technology for these chillers can increase above the current best system efficiency. Thirdly, if the reliability of CHP systems proves to be as high as diesel generators they could replace these generators at little or no additional cost if the thermal to electric (relative) load of those facilities was already high enough to economically justify a CHP system. Lastly, in terms of greenhouse gas emissions, the modeled CHP systems provide some degree of decreased emissions, estimated at approximately 10percent for the hospital, the application with the highest relative thermal load in this case

  17. Regularization Predicts While Discovering Taxonomy

    E-Print Network [OSTI]

    Mroueh, Youssef

    2011-06-03T23:59:59.000Z

    In this work we discuss a regularization framework to solve multi-category when the classes are described by an underlying class taxonomy. In particular we discuss how to learn the class taxonomy while learning a multi-category ...

  18. POLICY GUIDANCE MEMORANDUM #31 - Procedures for Regularizing...

    Energy Savers [EERE]

    1 - Procedures for Regularizing Illegal Appointments POLICY GUIDANCE MEMORANDUM 31 - Procedures for Regularizing Illegal Appointments As part of the Department's ongoing effort to...

  19. Thermodynamics of regular black hole

    E-Print Network [OSTI]

    Yun Soo Myung; Yong-Wan Kim; Young-Jai Park

    2008-09-21T23:59:59.000Z

    We investigate thermodynamics for a magnetically charged regular black hole (MCRBH), which comes from the action of general relativity and nonlinear electromagnetics, comparing with the Reissner-Norstr\\"om (RN) black hole in both four and two dimensions after dimensional reduction. We find that there is no thermodynamic difference between the regular and RN black holes for a fixed charge $Q$ in both dimensions. This means that the condition for either singularity or regularity at the origin of coordinate does not affect the thermodynamics of black hole. Furthermore, we describe the near-horizon AdS$_2$ thermodynamics of the MCRBH with the connection of the Jackiw-Teitelboim theory. We also identify the near-horizon entropy as the statistical entropy by using the AdS$_2$/CFT$_1$ correspondence.

  20. Dimensional regularization in configuration space

    SciTech Connect (OSTI)

    Bollini, C.G. [Facultad de Ciencias Exactas de La Universidad de La Plata, Departamento de Fisica, C.C. 67 La Plata (Argentina)] [Facultad de Ciencias Exactas de La Universidad de La Plata, Departamento de Fisica, C.C. 67 La Plata (Argentina); [Comision de Investigaciones Cientificas de La Provincia de Buenos Aires, Buenos Aires (Argentina); Giambiagi, J.J. [Centro Brasileiro de Pesquisas Fisicas--CBPF, Rua Dr. Xavier Sigaud, 150, 22.290-180 Rio de Janeiro RJ, (Brasil)] [Centro Brasileiro de Pesquisas Fisicas--CBPF, Rua Dr. Xavier Sigaud, 150, 22.290-180 Rio de Janeiro RJ, (Brasil)

    1996-05-01T23:59:59.000Z

    Dimensional regularization is introduced in configuration space by Fourier transforming in {nu} dimensions the perturbative momentum space Green functions. For this transformation, the Bochner theorem is used; no extra parameters, such as those of Feynman or Bogoliubov and Shirkov, are needed for convolutions. The regularized causal functions in {ital x} space have {nu}-dependent moderated singularities at the origin. They can be multiplied together and Fourier transformed (Bochner) without divergence problems. The usual ultraviolet divergences appear as poles of the resultant analytic functions of {nu}. Several examples are discussed. {copyright} {ital 1996 The American Physical Society.}

  1. Cadenas de caracteres Expresiones regulares

    E-Print Network [OSTI]

    Giménez, Domingo

    Algoritmos, de la asignatura de Programaci´on M´aster de Bioinform´atica Cadenas y expresiones regulares´imbolos. Normalmente se almacenan en un vector (un array de una dimensi´on). Las operaciones m´as comunes son: Asignaci´on

  2. sed and awk Regular Expressions

    E-Print Network [OSTI]

    Mohri, Mehryar

    at a time, like grep · Change lines of the file · Non-interactive text editor ­ Editing commands come in order to each input line. · If a command changes the input, subsequent command address will be applied and an action, where the address can be a regular expression or line number. address action command address

  3. VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION

    E-Print Network [OSTI]

    VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION MADALENA CHAVES, ROBERT DAY, LUCIA GOMEZ a network of vehicles exchanging information among themselves with the intention of achieving a specified the performance of the vehicle network. A stochastic model for information flow is also considered, allowing

  4. Regularization of Nonmonotone Variational Inequalities

    SciTech Connect (OSTI)

    Konnov, Igor V. [Department of Applied Mathematics, Kazan University, ul. Kremlevskaya 18, Kazan 420008 (Russian Federation)], E-mail: Igor.Konnov@ksu.ru; Ali, M.S.S. [Department of Mathematics, Faculty of Education, Ain Shams University, Cairo (Egypt); Mazurkevich, E.O. [Informatics Problems Institute of AS RT, Kazan 420012 (Russian Federation)

    2006-05-15T23:59:59.000Z

    In this paper we extend the Tikhonov-Browder regularization scheme from monotone to rather a general class of nonmonotone multivalued variational inequalities. We show that their convergence conditions hold for some classes of perfectly and nonperfectly competitive economic equilibrium problems.

  5. Tropical bases by regular projections

    E-Print Network [OSTI]

    Hept, Kerstin

    2007-01-01T23:59:59.000Z

    We consider the tropical variety $\\mathcal{T}(I)$ of a prime ideal $I$ generated by the polynomials $f_1, ..., f_r$ and revisit the regular projection technique introduced by Bieri and Groves from a computational point of view. In particular, we show that $I$ has a short tropical basis of cardinality at most $r + \\codim I + 1$ at the price of increased degrees, and we provide a computational description of these bases.

  6. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal Final Report - Part 3

    SciTech Connect (OSTI)

    Miller, Bruce; Shea, Winton

    2010-12-31T23:59:59.000Z

    Since 1998, The Pennsylvania State University successfully managed the Consortium for Premium Carbon Products from Coal (CPCPC), which was a vehicle for industry-driven research on the promotion, development, and transfer of innovative technologies on premium carbon products from coal to the U.S. industry. The CPCPC was an initiative led by Penn State, its cocharter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provided the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity continued under cooperative agreement No. DE-FC26-03NT41874, which started October 1, 2003 and ended December 31, 2010. The objective of the second agreement was to continue the successful operation of the CPCPC. The CPCPC enjoyed tremendous success with its organizational structure, which included Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC was its industry-led council that selected proposals submitted by CPCPC members to ensure CPCPC target areas had strong industrial support. CPCPC had 58 member companies and universities engaged over the 7-year period of this contract. Members were from 17 states and five countries outside of the U.S. During this period, the CPCPC Executive Council selected 46 projects for funding. DOE/CPCPC provided $3.9 million in funding or an average of $564,000 per year. The total project costs were $5.45 million with $1.5 million, or ~28% of the total, provided by the members as cost share. Total average project size was $118,000 with $85,900 provided by DOE/CPCPC. In addition to the research, technology transfer/outreach was a large component of CPCPC's activities. Efficient technology transfer was critical for the deployment of new technologies into the field. CPCPC organized and hosted technology transfer meetings, tours, and tutorials, attended outreach conferences and workshops to represent CPCPC and attract new members, prepared and distributed reports and publications, and developed and maintained a Web site. The second contract ended December 31, 2010, and it is apparent that CPCPC positively impacted the carbon industry and coal research. Statistics and information were compiled to provide a comprehensive account of the impact the consortium had and the beneficial outcomes of many of the individual projects. Project fact sheet, success stories, and other project information were prepared. Two topical reports, a Synthesis report and a Web report, were prepared detailing this information.

  7. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal Final Report - Part 4

    SciTech Connect (OSTI)

    Miller, Bruce; Shea, Winton

    2010-12-31T23:59:59.000Z

    Since 1998, The Pennsylvania State University successfully managed the Consortium for Premium Carbon Products from Coal (CPCPC), which was a vehicle for industry-driven research on the promotion, development, and transfer of innovative technologies on premium carbon products from coal to the U.S. industry. The CPCPC was an initiative led by Penn State, its cocharter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provided the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity continued under cooperative agreement No. DE-FC26-03NT41874, which started October 1, 2003 and ended December 31, 2010. The objective of the second agreement was to continue the successful operation of the CPCPC. The CPCPC enjoyed tremendous success with its organizational structure, which included Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC was its industry-led council that selected proposals submitted by CPCPC members to ensure CPCPC target areas had strong industrial support. CPCPC had 58 member companies and universities engaged over the 7-year period of this contract. Members were from 17 states and five countries outside of the U.S. During this period, the CPCPC Executive Council selected 46 projects for funding. DOE/CPCPC provided $3.9 million in funding or an average of $564,000 per year. The total project costs were $5.45 million with $1.5 million, or {approx}28% of the total, provided by the members as cost share. Total average project size was $118,000 with $85,900 provided by DOE/CPCPC. In addition to the research, technology transfer/outreach was a large component of CPCPC's activities. Efficient technology transfer was critical for the deployment of new technologies into the field. CPCPC organized and hosted technology transfer meetings, tours, and tutorials, attended outreach conferences and workshops to represent CPCPC and attract new members, prepared and distributed reports and publications, and developed and maintained a Web site. The second contract ended December 31, 2010, and it is apparent that CPCPC positively impacted the carbon industry and coal research. Statistics and information were compiled to provide a comprehensive account of the impact the consortium had and the beneficial outcomes of many of the individual projects. Project fact sheet, success stories, and other project information were prepared. Two topical reports, a Synthesis report and a Web report, were prepared detailing this information.

  8. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal Final Report - Part 2

    SciTech Connect (OSTI)

    Miller, Bruce; Winton, Shea

    2010-12-31T23:59:59.000Z

    Since 1998, The Pennsylvania State University successfully managed the Consortium for Premium Carbon Products from Coal (CPCPC), which was a vehicle for industry-driven research on the promotion, development, and transfer of innovative technologies on premium carbon products from coal to the U.S. industry. The CPCPC was an initiative led by Penn State, its cocharter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provided the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity continued under cooperative agreement No. DE-FC26-03NT41874, which started October 1, 2003 and ended December 31, 2010. The objective of the second agreement was to continue the successful operation of the CPCPC. The CPCPC enjoyed tremendous success with its organizational structure, which included Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC was its industry-led council that selected proposals submitted by CPCPC members to ensure CPCPC target areas had strong industrial support. CPCPC had 58 member companies and universities engaged over the 7-year period of this contract. Members were from 17 states and five countries outside of the U.S. During this period, the CPCPC Executive Council selected 46 projects for funding. DOE/CPCPC provided $3.9 million in funding or an average of $564,000 per year. The total project costs were $5.45 million with $1.5 million, or ~28% of the total, provided by the members as cost share. Total average project size was $118,000 with $85,900 provided by DOE/CPCPC. In addition to the research, technology transfer/outreach was a large component of CPCPC's activities. Efficient technology transfer was critical for the deployment of new technologies into the field. CPCPC organized and hosted technology transfer meetings, tours, and tutorials, attended outreach conferences and workshops to represent CPCPC and attract new members, prepared and distributed reports and publications, and developed and maintained a Web site. The second contract ended December 31, 2010, and it is apparent that CPCPC positively impacted the carbon industry and coal research. Statistics and information were compiled to provide a comprehensive account of the impact the consortium had and the beneficial outcomes of many of the individual projects. Project fact sheet, success stories, and other project information were prepared. Two topical reports, a Synthesis report and a Web report, were prepared detailing this information.

  9. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal Final Report - Part 5

    SciTech Connect (OSTI)

    Miller, Bruce; Shea, Winton

    2010-12-31T23:59:59.000Z

    Since 1998, The Pennsylvania State University successfully managed the Consortium for Premium Carbon Products from Coal (CPCPC), which was a vehicle for industry-driven research on the promotion, development, and transfer of innovative technologies on premium carbon products from coal to the U.S. industry. The CPCPC was an initiative led by Penn State, its cocharter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provided the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity continued under cooperative agreement No. DE-FC26-03NT41874, which started October 1, 2003 and ended December 31, 2010. The objective of the second agreement was to continue the successful operation of the CPCPC. The CPCPC enjoyed tremendous success with its organizational structure, which included Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC was its industry-led council that selected proposals submitted by CPCPC members to ensure CPCPC target areas had strong industrial support. CPCPC had 58 member companies and universities engaged over the 7-year period of this contract. Members were from 17 states and five countries outside of the U.S. During this period, the CPCPC Executive Council selected 46 projects for funding. DOE/CPCPC provided $3.9 million in funding or an average of $564,000 per year. The total project costs were $5.45 million with $1.5 million, or {approx}28% of the total, provided by the members as cost share. Total average project size was $118,000 with $85,900 provided by DOE/CPCPC. In addition to the research, technology transfer/outreach was a large component of CPCPC's activities. Efficient technology transfer was critical for the deployment of new technologies into the field. CPCPC organized and hosted technology transfer meetings, tours, and tutorials, attended outreach conferences and workshops to represent CPCPC and attract new members, prepared and distributed reports and publications, and developed and maintained a Web site. The second contract ended December 31, 2010, and it is apparent that CPCPC positively impacted the carbon industry and coal research. Statistics and information were compiled to provide a comprehensive account of the impact the consortium had and the beneficial outcomes of many of the individual projects. Project fact sheet, success stories, and other project information were prepared. Two topical reports, a Synthesis report and a Web report, were prepared detailing this information.

  10. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal Final Report - Part 1

    SciTech Connect (OSTI)

    Miller, Bruce; Winton, Shea

    2010-12-31T23:59:59.000Z

    Since 1998, The Pennsylvania State University successfully managed the Consortium for Premium Carbon Products from Coal (CPCPC), which was a vehicle for industry-driven research on the promotion, development, and transfer of innovative technologies on premium carbon products from coal to the U.S. industry. The CPCPC was an initiative led by Penn State, its cocharter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provided the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity continued under cooperative agreement No. DE-FC26-03NT41874, which started October 1, 2003 and ended December 31, 2010. The objective of the second agreement was to continue the successful operation of the CPCPC. The CPCPC enjoyed tremendous success with its organizational structure, which included Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC was its industry-led council that selected proposals submitted by CPCPC members to ensure CPCPC target areas had strong industrial support. CPCPC had 58 member companies and universities engaged over the 7-year period of this contract. Members were from 17 states and five countries outside of the U.S. During this period, the CPCPC Executive Council selected 46 projects for funding. DOE/CPCPC provided $3.9 million in funding or an average of $564,000 per year. The total project costs were $5.45 million with $1.5 million, or ~28% of the total, provided by the members as cost share. Total average project size was $118,000 with $85,900 provided by DOE/CPCPC. In addition to the research, technology transfer/outreach was a large component of CPCPC's activities. Efficient technology transfer was critical for the deployment of new technologies into the field. CPCPC organized and hosted technology transfer meetings, tours, and tutorials, attended outreach conferences and workshops to represent CPCPC and attract new members, prepared and distributed reports and publications, and developed and maintained a Web site. The second contract ended December 31, 2010, and it is apparent that CPCPC positively impacted the carbon industry and coal research. Statistics and information were compiled to provide a comprehensive account of the impact the consortium had and the beneficial outcomes of many of the individual projects. Project fact sheet, success stories, and other project information were prepared. Two topical reports, a Synthesis report and a Web report, were prepared detailing this information.

  11. Climate adaptation wedges: a case study of premium wine in the western United States

    SciTech Connect (OSTI)

    Diffenbaugh, Noah [Stanford University; White, Michael A [Utah State University (USU); Jones, Gregory V [Southern Oregon University, Ashland, OR; Ashfaq, Moetasim [ORNL

    2011-01-01T23:59:59.000Z

    Design and implementation of effective climate change adaptation activities requires quantitative assessment of the impacts that are likely to occur without adaptation, as well as the fraction of impact that can be avoided through each activity. Here we present a quantitative framework inspired by the greenhouse gas stabilization wedges of Pacala and Socolow. In our proposed framework, the damage avoided by each adaptation activity creates an 'adaptation wedge' relative to the loss that would occur without that adaptation activity. We use premium winegrape suitability in the western United States as an illustrative case study, focusing on the near-term period that covers the years 2000 39. We find that the projected warming over this period results in the loss of suitable winegrape area throughout much of California, including most counties in the high-value North Coast and Central Coast regions. However, in quantifying adaptation wedges for individual high-value counties, we find that a large adaptation wedge can be captured by increasing the severe heat tolerance, including elimination of the 50% loss projected by the end of the 2030 9 period in the North Coast region, and reduction of the projected loss in the Central Coast region from 30% to less than 15%. Increased severe heat tolerance can capture an even larger adaptation wedge in the Pacific Northwest, including conversion of a projected loss of more than 30% in the Columbia Valley region of Washington to a projected gain of more than 150%. We also find that warming projected over the near-term decades has the potential to alter the quality of winegrapes produced in the western US, and we discuss potential actions that could create adaptation wedges given these potential changes in quality. While the present effort represents an initial exploration of one aspect of one industry, the climate adaptation wedge framework could be used to quantitatively evaluate the opportunities and limits of climate adaptation within and across a broad range of natural and human systems.

  12. Premium Fuel Production From Mining and Timber Waste Using Advanced Separation and Pelletizing Technologies

    SciTech Connect (OSTI)

    Honaker, R. Q.; Taulbee, D.; Parekh, B. K.; Tao, D.

    2005-12-05T23:59:59.000Z

    The Commonwealth of Kentucky is one of the leading states in the production of both coal and timber. As a result of mining and processing coal, an estimated 3 million tons of fine coal are disposed annually to waste-slurry impoundments with an additional 500 million tons stored at a number of disposal sites around the state due to past practices. Likewise, the Kentucky timber industry discards nearly 35,000 tons of sawdust on the production site due to unfavorable economics of transporting the material to industrial boilers for use as a fuel. With an average heating value of 6,700 Btu/lb, the monetary value of the energy disposed in the form of sawdust is approximately $490,000 annually. Since the two industries are typically in close proximity, one promising avenue is to selectively recover and dewater the fine-coal particles and then briquette them with sawdust to produce a high-value fuel. The benefits are i) a premium fuel product that is low in moisture and can be handled, transported, and utilized in existing infrastructure, thereby avoiding significant additional capital investment and ii) a reduction in the amount of fine-waste material produced by the two industries that must now be disposed at a significant financial and environmental price. As such, the goal of this project was to evaluate the feasibility of producing a premium fuel with a heating value greater than 10,000 Btu/lb from waste materials generated by the coal and timber industries. Laboratory and pilot-scale testing of the briquetting process indicated that the goal was successfully achieved. Low-ash briquettes containing 5% to 10% sawdust were produced with energy values that were well in excess of 12,000 Btu/lb. A major economic hurdle associated with commercially briquetting coal is binder cost. Approximately fifty binder formulations, both with and without lime, were subjected to an extensive laboratory evaluation to assess their relative technical and economical effectiveness as binding agents for the briquetting of 90% coal and 10% sawdust blends. Guar gum, wheat starch, and a multi-component formulation were identified as most cost-effective for the production of briquettes targeted for the pulverized-coal market with costs being around $8 per ton of the coal-sawdust blend. REAX/lime and a second multi-component formulation were identified as the most cost-effective for the production of briquettes targeted for the stoker-coal market. Various sources of sawdust generated from different wood types were also investigated to determine their chemical properties and to evaluate their relative performance when briquetted with clean coal to form a premium fuel. The highest heating values, approaching 7,000 Btu/lb, were obtained from oak. Sawdusts from higher-density, red oak, white oak, hickory, and beech trees provided higher quality briquettes relative to their lower-density counterparts. In addition to sawdust type, a number of other parameters were evaluated to characterize their impact on briquette properties. The parameters that exhibited the greatest impact on briquette performance were binder concentration; sawdust concentration and particle size; cure temperature; and ash content. Parameters that had the least impact on briquette properties, at least over the ranges studied, were moisture content, briquetting force, and briquetting dwell time. The continuous production of briquettes from a blend of coal and sawdust was evaluated using a 200 lbs/hr Komarek Model B-100 briquetter. The heating values of briquettes produced by the unit exceeded the goal of the project by a large margin. A significant observation was the role of feed moisture on the stability of the mass flow rate through the briquetter and on briquette strength. Excessive feed moisture levels caused inconsistent or stoppage of material flow through the feed hopper and resulted in the production of variable-quality briquettes. Obviously, the limit on feed moisture content has a significant impact on the economics of coal-sawdust briquetting since it will ultimately dictate dew

  13. Infrared regularization with vector mesons and baryons

    E-Print Network [OSTI]

    P. C. Bruns; Ulf-G. Meißner

    2008-08-23T23:59:59.000Z

    We extend the method of infrared regularization to spin-1 fields coupled to baryons. As an application, we discuss the axial form factor of the nucleon.

  14. About uniform regularity of collections of sets

    E-Print Network [OSTI]

    2013-10-15T23:59:59.000Z

    About uniform regularity of collections of sets. Alexander Y. Kruger · Nguyen H. Thao. Dedicated to Asen Dontchev on the occasion of his 65th birthday and.

  15. Optimization Online - Dual Averaging Methods for Regularized ...

    E-Print Network [OSTI]

    Lin Xiao

    2010-04-15T23:59:59.000Z

    Apr 15, 2010 ... ... simple minimization problem that involves the running average of all past subgradients of the loss function and the whole regularization term, ...

  16. Three essays in labor economics: fertility expectations and career choice, specialization and the marriage premium, and estimating risk aversion using labor supply data

    E-Print Network [OSTI]

    Leonard, Megan de Linde

    2009-05-15T23:59:59.000Z

    of labor is an important cause of the wage premium. The choice of a career, whether to marry, and most other important life decisions are dependent on one's risk tolerance. The role of risk preferences in such choices is not fully understood, largely...

  17. Checkpointing strategies with prediction windows Regular paper

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Checkpointing strategies with prediction windows Regular paper Guillaume Aupy1,3, Yves Robert1, a regular mode outside prediction windows, and a proactive mode inside prediction windows, whenever the size of these windows is large enough. We are able to compute the best period for any size of the prediction windows

  18. Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly report, April 1--June 30, 1997

    SciTech Connect (OSTI)

    Moro, N.; Shields, G.L.; Smit, F.J.; Jha, M.C.

    1997-12-31T23:59:59.000Z

    The primary goal of this project is the engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. The project scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by the design, construction, and operation of a 2 t/hr process development unit (PDU). Accomplishments during the quarter are described on the following tasks and subtasks: Development of near-term applications (engineering development and dewatering studies); Engineering development of selective agglomeration (bench-scale testing and process scale-up); PDU and advanced column flotation module (coal selection and procurement and advanced flotation topical report); Selective agglomeration module (module operation and clean coal production with Hiawatha, Taggart, and Indiana 7 coals); Disposition of the PDU; and Project final report. Plans for next quarter are discussed and agglomeration results of the three tested coals are presented.

  19. Continuum regularization of gauge theory with fermions

    SciTech Connect (OSTI)

    Chan, H.S.

    1987-03-01T23:59:59.000Z

    The continuum regularization program is discussed in the case of d-dimensional gauge theory coupled to fermions in an arbitrary representation. Two physically equivalent formulations are given. First, a Grassmann formulation is presented, which is based on the two-noise Langevin equations of Sakita, Ishikawa and Alfaro and Gavela. Second, a non-Grassmann formulation is obtained by regularized integration of the matter fields within the regularized Grassmann system. Explicit perturbation expansions are studied in both formulations, and considerable simplification is found in the integrated non-Grassmann formalism.

  20. Benefits Summary - Term Appointments in Regular Job Class | Argonne...

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

    Term Appointments in Regular Job Class Download a brochure on benefits offered to term appointments in the regular job class (over 6 months). 2015 Long Term Appts. in Regular...

  1. # Team Name Captain REGULAR SEASON SCHEDULE

    E-Print Network [OSTI]

    Sheridan, Scott

    # Team Name Captain 1 2 3 4 5 REGULAR SEASON SCHEDULE Sprt Score Team vs. Team Score Sprt Sprt Score Team vs. Team Score Sprt 1 vs. 2 3 vs. 4 2 vs. 3 4 vs. 5 1 vs. 3 2 vs. 5 3 vs. 5 1 vs. 4 2 vs. 4 1 vs. 5 # Team Name Captain 1 2 3 4 REGULAR SEASON SCHEDULE Sprt Score Team vs. Team Score Sprt Sprt

  2. Regular Languages A language L is regular if one of the following is true

    E-Print Network [OSTI]

    Waterloo, University of

    . Language of the FA: all such words · L(M) = {w * where *( q0, w) A} · or L(M) = {w * where M accepts w} LRegular Languages A language L is regular if one of the following is true: Regular Expression Language � L = � L = {} a L = {a} for some a r1* L = L1* for some regular language L1 r1 r2 L = L1 L2

  3. an epiperimetric inequality approach to the regularity of the free ...

    E-Print Network [OSTI]

    2015-01-26T23:59:59.000Z

    An epiperimetric inequality for the Signorini problem. 18. 7. C1,? regularity of the regular part of the free boundary. 28. References. 39. 1. Introduction. 1.1.

  4. Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 16, July--September, 1996

    SciTech Connect (OSTI)

    Shields, G.L.; Moro, N.; Smit, F.J.; Jha, M.C.

    1996-10-30T23:59:59.000Z

    The primary goal of this project is the engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. The project scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by the design, construction, and operation of a 2-t/hr process development unit (PDU). The project began in October, 1992, and is scheduled for completion by September 1997. 28 refs., 13 figs., 19 tabs.

  5. The random lattice as a regularization scheme

    E-Print Network [OSTI]

    B. Alles

    1994-12-05T23:59:59.000Z

    A semi-analytic method to compute the first coefficients of the renormalization group functions on a random lattice is introduced. It is used to show that the two-dimensional $O(N)$ non-linear $\\sigma$-model regularized on a random lattice has the correct continuum limit. A degree $\\kappa$ of ``randomness'' in the lattice is introduced and an estimate of the ratio $\\Lambda_{random}/\\Lambda_{regular}$ for two rather opposite values of $\\kappa$ in the $\\sigma$-model is also given. This ratio turns out to depend on $\\kappa$.

  6. Regular Simplex Fingerprints and Their Optimality Properties

    E-Print Network [OSTI]

    Moulin, Pierre

    Regular Simplex Fingerprints and Their Optimality Properties Negar Kiyavash1 and Pierre Moulin2 1 constraints. We show that n-Simplex Fingerprints are optimal in sense of maximizing a geometric figure. Fingerprinting, Simplex codes, Error exponents. 1 Introduction Protection of digital property is an emerging need

  7. Regular simplex and periodic billiard orbit

    E-Print Network [OSTI]

    Bedaride, Nicolas

    2011-01-01T23:59:59.000Z

    We consider billiard inside regular simplex of $\\mathbb{R}^n$. We show the existence of two periodic trajectories. One of period $n+1$ which passes one time by each face and one of period $2n$ which passes $n$ times through one face and one time through each other face. In both cases we obtain exact coordinates for the periodic points.

  8. Mean Width of a Regular Simplex

    E-Print Network [OSTI]

    Finch, Steven R

    2011-01-01T23:59:59.000Z

    The mean width is a measure on n-dimensional convex bodies. An integral formula for the mean width of a regular n-simplex appeared in the electrical engineering literature in 1997. As a consequence, expressions for the expected range of a sample of n+1 normally distributed variables, for ninfty.

  9. Regularized Discrete Optimal Transport Sira Ferradans1

    E-Print Network [OSTI]

    Boyer, Edmond

    . Jean-Francois.Aujol@math.u-bordeaux1.fr Abstract. This article introduces a generalization of discrete in modified images. In this article, we propose a variational formalism to relax and regularize the transport dedicated linear solvers (transportation simplex) and combinatorial algorithms (such as the Hungarian

  10. A Treecode Algorithm for Regularized Particle Interactions

    E-Print Network [OSTI]

    Maryland at College Park, University of

    A Treecode Algorithm for Regularized Particle Interactions Robert Krasny University of Michigan = 400 Krasny (1986) 0.275 -0.275 y 0 2x t =0 t =1 t =2 t =3 t =4 #12;t = 1 , 0 = 0.2 = 0.15 = 0.1 = 0.05 #12;closeup , = 0.05 #12;comparison : experiment / simulation Didden (1979) Nitsche & Krasny

  11. Regularization Predicts While Discovering Taxonomy Youssef Mroueh ,

    E-Print Network [OSTI]

    Poggio, Tomaso

    Regularization Predicts While Discovering Taxonomy Youssef Mroueh , , Tomaso Poggio , Lorenzo are described by an underlying class taxonomy. In particular we discuss how to learn the class taxonomy while taxonomies that may lead to a more efficient classification are not exploited. Several approaches have been

  12. Deciding Definability by Deterministic Regular Expressions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    (DTD) [5] and XML Schema Definition (XSD) [10], both developed by the World Wide Web Consortium, do as well. Intuitively, a regular expression is deterministic if, when reading a word from left to right. For example, the expression (a + b) b(a + b) is not deterministic, because if we read a word that starts

  13. GENERALIZED LINEAR MODELS WITH REGULARIZATION A DISSERTATION

    E-Print Network [OSTI]

    Hastie, Trevor

    GENERALIZED LINEAR MODELS WITH REGULARIZATION A DISSERTATION SUBMITTED TO THE DEPARTMENT Park 2006 All Rights Reserved ii #12;I certify that I have read this dissertation and that, in my opinion, it is fully adequate in scope and quality as a dissertation for the degree of Doctor

  14. Regularity Theorems in the Nonsymmetric Gravitational Theory

    E-Print Network [OSTI]

    J. W. Moffat

    1995-04-17T23:59:59.000Z

    Regularity theorems are presented for cosmology and gravitational collapse in non-Riemannian gravitational theories. These theorems establish conditions necessary to allow the existence of timelike and null path complete spacetimes for matter that satisfies the positive energy condition. Non-Riemannian theories of gravity can have solutions that have a non-singular beginning of the universe, and the gravitational collapse of a star does not lead to a black hole event horizon and a singularity as a final stage of collapse. A perturbatively consistent version of nonsymmetric gravitational theory is studied that, in the long-range approximation, has a nonsingular static spherically symmetric solution which is path complete, does not have black hole event horizons and has finite curvature invariants. The theory satisfies the regularity theorems for cosmology and gravitational collapse. The elimination of black holes resolves the information loss puzzle.

  15. Regular expression matching and operational Hayo Thielecke

    E-Print Network [OSTI]

    Thielecke, Hayo

    / 24 #12;The EKW machine e ; k ; w e ; k ; w e1 | e2 ; k ; w e1 ; k ; w e1 | e2 ; k ; w e2 ; k ; w e1 e2 ; k ; w e1 ; e2 :: k ; w e ; k ; w e ; e :: k ; w e ; k ; w ; k ; w a ; k ; a w ; k ; w ; e :: k ; w e ; k ; w 8 / 24 #12;Regular expressions as trees/graphs in memory Expression as trees

  16. Local semicircle law for random regular graphs

    E-Print Network [OSTI]

    Roland Bauerschmidt; Antti Knowles; Horng-Tzer Yau

    2015-05-26T23:59:59.000Z

    We consider random $d$-regular graphs on $N$ vertices, with degree $d$ at least $(\\log N)^4$. We prove that the Green's function of the adjacency matrix and the Stieltjes transform of its empirical spectral measure are well approximated by Wigner's semicircle law, down to the optimal scale given by the typical eigenvalue spacing (up to a logarithmic correction). Aside from well-known consequences for the local eigenvalue distribution, this result implies the complete delocalization of all eigenvectors.

  17. Weighted power counting and chiral dimensional regularization

    E-Print Network [OSTI]

    Damiano Anselmi

    2014-06-27T23:59:59.000Z

    We define a modified dimensional-regularization technique that overcomes several difficulties of the ordinary technique, and is specially designed to work efficiently in chiral and parity violating quantum field theories, in arbitrary dimensions greater than 2. When the dimension of spacetime is continued to complex values, spinors, vectors and tensors keep the components they have in the physical dimension, therefore the $\\gamma $ matrices are the standard ones. Propagators are regularized with the help of evanescent higher-derivative kinetic terms, which are of the Majorana type in the case of chiral fermions. If the new terms are organized in a clever way, weighted power counting provides an efficient control on the renormalization of the theory, and allows us to show that the resulting chiral dimensional regularization is consistent to all orders. The new technique considerably simplifies the proofs of properties that hold to all orders, and makes them suitable to be generalized to wider classes of models. Typical examples are the renormalizability of chiral gauge theories and the Adler-Bardeen theorem. The difficulty of explicit computations, on the other hand, may increase.

  18. Modeling of Distributed Systems by Concurrent Regular Expressions

    E-Print Network [OSTI]

    Garg, Vijay

    Modeling of Distributed Systems by Concurrent Regular Expressions Vijay K. Garg Department of Electrical and Computer Engineering, University of Texas, Austin, TX 78712 We propose an algebraic model called concurrent regular expressions for modeling and anal- ysis of distributed systems

  19. Modeling of Distributed Systems by Concurrent Regular Expressions

    E-Print Network [OSTI]

    Garg, Vijay

    Modeling of Distributed Systems by Concurrent Regular Expressions Vijay K. Garg Department of Electrical and Computer Engineering, University of Texas, Austin, TX 78712 We propose an algebraic model called concurrent regular expressions for modeling and anal­ ysis of distributed systems

  20. System regularities in design of experiments and their applications

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This dissertation documents a meta-analysis of 113 data sets from published factorial experiments. The study quantifies regularities observed among main effects and multi-factor interactions. Such regularities are critical ...

  1. On a Regular Simplex in Rn Felix Lazebnik

    E-Print Network [OSTI]

    Lazebnik, Felix

    On a Regular Simplex in Rn Felix Lazebnik We begin with stating and proving the following theorem, where all i 0 and n+1 i=1 i = 1 is called the standard regular 1 #12;simplex in Rn . If instead of distance 1 we assume all pairwise distances d > 0, we obtain a regular simplex . Here are some question

  2. Regular Variation of GARCH Processes Bojan Basrak1

    E-Print Network [OSTI]

    Davis, Richard A.

    Regular Variation of GARCH Processes Bojan Basrak1 EURANDOM Richard A. Davis2 Colorado State University Thomas Mikosch3 University of Copenhagen Short Title: Regular Variation of GARCH Processes Abstract We show that the finite-dimensional distributions of a GARCH process are regularly varying, i

  3. Wave regularity in curve integrable spacetimes

    E-Print Network [OSTI]

    Yafet Sanchez Sanchez

    2015-02-23T23:59:59.000Z

    The idea of defining a gravitational singularity as an obstruction to the dynamical evolution of a test field (described by a PDE) rather than the dynamical evolution of a particle (described by a geodesics) is explored. In particular, the concept of wave regularity is introduced which serves to show that the classical singularities in curve integrable spacetimes do not interrupt the well-posedness of the wave equation. The techniques used also provide arguments that can be extended to establish when a classically singular spacetime remains singular in a semi-classical picture.

  4. Nonlinear regularization techniques for seismic tomography

    SciTech Connect (OSTI)

    Loris, I. [Mathematics Department, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels (Belgium)], E-mail: igloris@vub.ac.be; Douma, H. [Department of Geosciences, Princeton University, Guyot Hall, Washington Road, Princeton, NJ 08544 (United States); Nolet, G. [Geosciences Azur, Universite de Nice-Sophia Antipolis, CNRS/IRD, 250 Rue Albert Einstein, Sophia Antipolis 06560 (France); Daubechies, I. [Program in Applied and Computational Mathematics, Princeton University, Fine Hall, Washington Road, Princeton, NJ 08544 (United States); Regone, C. [BP America Inc., 501 Westlake Park Blvd., Houston, TX 77079 (United States)

    2010-02-01T23:59:59.000Z

    The effects of several nonlinear regularization techniques are discussed in the framework of 3D seismic tomography. Traditional, linear, l{sub 2} penalties are compared to so-called sparsity promoting l{sub 1} and l{sub 0} penalties, and a total variation penalty. Which of these algorithms is judged optimal depends on the specific requirements of the scientific experiment. If the correct reproduction of model amplitudes is important, classical damping towards a smooth model using an l{sub 2} norm works almost as well as minimizing the total variation but is much more efficient. If gradients (edges of anomalies) should be resolved with a minimum of distortion, we prefer l{sub 1} damping of Daubechies-4 wavelet coefficients. It has the additional advantage of yielding a noiseless reconstruction, contrary to simple l{sub 2} minimization ('Tikhonov regularization') which should be avoided. In some of our examples, the l{sub 0} method produced notable artifacts. In addition we show how nonlinear l{sub 1} methods for finding sparse models can be competitive in speed with the widely used l{sub 2} methods, certainly under noisy conditions, so that there is no need to shun l{sub 1} penalizations.

  5. Black hole mimickers: Regular versus singular behavior

    SciTech Connect (OSTI)

    Lemos, Jose P. S.; Zaslavskii, Oleg B. [Centro Multidisciplinar de Astrofisica, CENTRA, Departamento de Fisica, Instituto Superior Tecnico-IST, Universidade Tecnica de Lisboa-UTL, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Astronomical Institute of Kharkov, V. N. Karazin National University, 35 Sumskaya Street, Kharkov, 61022 (Ukraine)

    2008-07-15T23:59:59.000Z

    Black hole mimickers are possible alternatives to black holes; they would look observationally almost like black holes but would have no horizon. The properties in the near-horizon region where gravity is strong can be quite different for both types of objects, but at infinity it could be difficult to discern black holes from their mimickers. To disentangle this possible confusion, we examine the near-horizon properties, and their connection with far away asymptotic properties, of some candidates to black mimickers. We study spherically symmetric uncharged or charged but nonextremal objects, as well as spherically symmetric charged extremal objects. Within the uncharged or charged but nonextremal black hole mimickers, we study nonextremal {epsilon}-wormholes on the threshold of the formation of an event horizon, of which a subclass are called black foils, and gravastars. Within the charged extremal black hole mimickers we study extremal {epsilon}-wormholes on the threshold of the formation of an event horizon, quasi-black holes, and wormholes on the basis of quasi-black holes from Bonnor stars. We elucidate whether or not the objects belonging to these two classes remain regular in the near-horizon limit. The requirement of full regularity, i.e., finite curvature and absence of naked behavior, up to an arbitrary neighborhood of the gravitational radius of the object enables one to rule out potential mimickers in most of the cases. A list ranking the best black hole mimickers up to the worst, both nonextremal and extremal, is as follows: wormholes on the basis of extremal black holes or on the basis of quasi-black holes, quasi-black holes, wormholes on the basis of nonextremal black holes (black foils), and gravastars. Since in observational astrophysics it is difficult to find extremal configurations (the best mimickers in the ranking), whereas nonextremal configurations are really bad mimickers, the task of distinguishing black holes from their mimickers seems to be less difficult than one could think of it.

  6. Use of Regularization Functions in Problems of Dynamic Optimization

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    (fixed bed) Relative humidity : 0. Chromatography Column with reaction 6. Fixed Bed dryer 7. Cross-flow dryer #12;Use of Regularization Functions

  7. Regularity at the Boundary for Solutions of Nonlinear Subelliptic ...

    E-Print Network [OSTI]

    Donatella Danielli

    2000-04-04T23:59:59.000Z

    Mar 8, 1995 ... [HaHu] W. Hansen & H. Hueber, The Dirichlet problem for sublaplacians on nilpotent Lie groups—Criteria for regularity, Math. Ann., 276 (1987),.

  8. Stationarity and regularity of infinite collections of sets

    E-Print Network [OSTI]

    Alexander Y. Kruger

    2011-12-19T23:59:59.000Z

    Dec 19, 2011 ... Abstract: This article investigates extremality, stationarity, and regularity properties of infinite collections of sets in Banach spaces. Our approach ...

  9. Optimization Online - About Regularity of Collections of Sets

    E-Print Network [OSTI]

    Alexander Ya. Kruger

    2005-06-03T23:59:59.000Z

    Jun 3, 2005 ... About Regularity of Collections of Sets. Alexander Ya. Kruger (a.kruger ***at*** ballarat.edu.au). Abstract: The paper continues investigations of ...

  10. About [q]-regularity Properties of Collections of Sets

    E-Print Network [OSTI]

    2014-02-18T23:59:59.000Z

    collections of sets systematically, several other kinds of regularity were ... of the approximate stationarity property of collections of sets which is the main ...

  11. Optimization Online - Regularity of collections of sets and ...

    E-Print Network [OSTI]

    Alexander Y. Kruger

    2015-01-17T23:59:59.000Z

    Jan 17, 2015 ... Regularity of collections of sets and convergence of inexact alternating projections. Alexander Y. Kruger (a.kruger ***at*** federation.edu.au)

  12. Optimization Online - Stationarity and regularity of infinite collections ...

    E-Print Network [OSTI]

    Alexander Y. Kruger

    2011-12-19T23:59:59.000Z

    Dec 19, 2011 ... Abstract: This article continues the investigation of stationarity and regularity properties of infinite collections of sets in a Banach space started ...

  13. Stationarity and Regularity of Infinite Collections of Sets ...

    E-Print Network [OSTI]

    2012-05-10T23:59:59.000Z

    Abstract This article continues the investigation of stationarity and regularity properties of infinite collections of sets in a Banach space started in Kruger and ...

  14. About [q]-regularity properties of collections of sets

    E-Print Network [OSTI]

    Alexander Y. Kruger

    2013-10-21T23:59:59.000Z

    Oct 21, 2013 ... Abstract: We examine three primal space local Hoelder type regularity properties of finite collections of sets, namely, [q]-semiregularity, ...

  15. Regularity of collections of sets and convergence of inexact ...

    E-Print Network [OSTI]

    2015-02-28T23:59:59.000Z

    We study the usage of regularity properties of collections of sets in con- vergence analysis of alternating projection methods for solving feasibility problems.

  16. Energy Distribution of a Charged Regular Black Hole

    E-Print Network [OSTI]

    Irina Radinschi

    2000-11-20T23:59:59.000Z

    We calculate the energy distribution of a charged regular black hole by using the energy-momentum complexes of Einstein and M{\\o}ller.

  17. Optimization Online - $S_{0.5}$ Regularization Methods and Fixed ...

    E-Print Network [OSTI]

    Peng Dingtao

    2013-01-10T23:59:59.000Z

    Jan 10, 2013 ... $S_{0.5}$ Regularization Methods and Fixed Point Algorithms for Affine Rank Minimization Problems. Peng Dingtao (dingtaopeng ***at*** ...

  18. STATIONARITY AND REGULARITY OF REAL-VALUED FUNCTIONS

    E-Print Network [OSTI]

    2006-01-06T23:59:59.000Z

    [7] Ioffe, A. D. Metric regularity and subdifferential calculus. Russian Math. Surveys. 55 (2000), 501–558. [8] Klatte, D., and Kummer, B. Nonsmooth Equations in ...

  19. On the regularizing behavior of recent gradient methods in the ...

    E-Print Network [OSTI]

    Roberta De Asmundis

    2014-06-14T23:59:59.000Z

    Jun 14, 2014 ... On the regularizing behavior of recent gradient methods in the ... can be competitive with the Conjugate Gradient (CG) method, since they are ...

  20. assessment syntax regularization: Topics by E-print Network

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

    chart domains such that the result is an atlas as well. The normalization of the local charts also Amann, Herbert 309 Fusion of Regularization Terms For Image Restoration...

  1. Regularization Dependence of Running Couplings in Softly Broken Supersymmetry

    E-Print Network [OSTI]

    Stephen P. Martin; Michael T. Vaughn

    2008-07-24T23:59:59.000Z

    We discuss the dependence of running couplings on the choice of regularization method in a general softly-broken N=1 supersymmetric theory. Regularization by dimensional reduction respects supersymmetry, but standard dimensional regularization does not. We find expressions for the differences between running couplings in the modified minimal subtraction schemes of these two regularization methods, to one loop order. We also find the two-loop renormalization group equations for gaugino masses in both schemes, and discuss the application of these results to the Minimal Supersymmetric Standard Model.

  2. Towards a regular type N vacuum gravitational field

    E-Print Network [OSTI]

    B. V. Ivanov

    1999-10-21T23:59:59.000Z

    An exact twisting type N vacuum solution is found. It has regular gauge and curvature invariants and decays to flat spacetime for big retarded times.

  3. Optimization Online - Performance-based regularization in mean ...

    E-Print Network [OSTI]

    Gah-Yi Vahn

    2014-11-03T23:59:59.000Z

    Nov 3, 2014 ... Performance-based regularization in mean-CVaR portfolio optimization. Gah-Yi Vahn(gvahn ***at*** london.edu) Noureddine El ...

  4. Wave dynamics of regular and chaotic rays

    SciTech Connect (OSTI)

    McDonald, S.W.

    1983-09-01T23:59:59.000Z

    In order to investigate general relationships between waves and rays in chaotic systems, I study the eigenfunctions and spectrum of a simple model, the two-dimensional Helmholtz equation in a stadium boundary, for which the rays are ergodic. Statistical measurements are performed so that the apparent randomness of the stadium modes can be quantitatively contrasted with the familiar regularities observed for the modes in a circular boundary (with integrable rays). The local spatial autocorrelation of the eigenfunctions is constructed in order to indirectly test theoretical predictions for the nature of the Wigner distribution corresponding to chaotic waves. A portion of the large-eigenvalue spectrum is computed and reported in an appendix; the probability distribution of successive level spacings is analyzed and compared with theoretical predictions. The two principal conclusions are: 1) waves associated with chaotic rays may exhibit randomly situated localized regions of high intensity; 2) the Wigner function for these waves may depart significantly from being uniformly distributed over the surface of constant frequency in the ray phase space.

  5. Infrared regular representation of the three dimensional massless Nelson model

    E-Print Network [OSTI]

    Infrared regular representation of the three dimensional massless Nelson model J#19;ozsef L this Gaussian measure space. KEYWORDS: Nelson's scalar #12;eld model, infrared regular representation, ground] of a spinless electron coupled to a scalar massless Bose #12;eld is infrared divergent in 3 space dimensions

  6. Loss of regularity for Kolmogorov equations Martin Hairer1

    E-Print Network [OSTI]

    Hairer, Martin

    .jentzen (at) sam.math.ethz.ch 4 Program in Applied and Computational Mathematics, Princeton University, this observation has the consequence that there exists a stochastic differential equation (SDE) with globally on regularity analysis of linear PDEs, on the literature on regularity analysis of stochastic differential

  7. Regular Equivalence and Dynamic Logic Maarten Marx and Michael Masuch

    E-Print Network [OSTI]

    Amsterdam, University of

    Regular Equivalence and Dynamic Logic Maarten Marx #3; and Michael Masuch Institure for Logic equivalence relation on a social network. That is, a formal language of position terms is de#12;ned with the property that on #12;nite networks, two actors are regularly equivalent if and only if they cannot

  8. HOW SMOOTH IS YOUR WAVELET? WAVELET REGULARITY VIA THERMODYNAMIC FORMALISM

    E-Print Network [OSTI]

    HOW SMOOTH IS YOUR WAVELET? WAVELET REGULARITY VIA THERMODYNAMIC FORMALISM M. Pollicott and H. Weiss June 9, 2005 9:49am Abstract. A popular wavelet reference [W] states that "in theoretical and practical studies, the notion of (wavelet) regularity has been increasing in importance." Not surprisingly

  9. Problems of Distance-Regular Graphs Hiroshi Suzuki

    E-Print Network [OSTI]

    Xi, Changchang

    ­328. [14] H. Suzuki, The Terwilliger algebra associated with a set of vertices in a distance-regular graph, J. Alg. Combin. 22 (2005), 5-38. [15] P. Terwilliger, Distance-regular graphs and (s, c, a, k)-graphs, J. Combin. Th. (B) 34 (1983), 151­164. [16] P. Terwilliger, A new inequality for distance

  10. Video Denoising and Simplification Via Discrete Regularization on Graphs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Video Denoising and Simplification Via Discrete Regularization on Graphs Mahmoud Ghoniem, Youssef algorithms for video de- noising and simplification based on discrete regularization on graphs. The main difference between video and image denoising is the temporal redundancy in video sequences. Recent works

  11. TRANSIENT LUNAR PHENOMENA: REGULARITY AND REALITY

    SciTech Connect (OSTI)

    Crotts, Arlin P. S. [Department of Astronomy, Columbia University, Columbia Astrophysics Laboratory, 550 West 120th Street, New York, NY 10027 (United States)

    2009-05-20T23:59:59.000Z

    Transient lunar phenomena (TLPs) have been reported for centuries, but their nature is largely unsettled, and even their existence as a coherent phenomenon is controversial. Nonetheless, TLP data show regularities in the observations; a key question is whether this structure is imposed by processes tied to the lunar surface, or by terrestrial atmospheric or human observer effects. I interrogate an extensive catalog of TLPs to gauge how human factors determine the distribution of TLP reports. The sample is grouped according to variables which should produce differing results if determining factors involve humans, and not reflecting phenomena tied to the lunar surface. Features dependent on human factors can then be excluded. Regardless of how the sample is split, the results are similar: {approx}50% of reports originate from near Aristarchus, {approx}16% from Plato, {approx}6% from recent, major impacts (Copernicus, Kepler, Tycho, and Aristarchus), plus several at Grimaldi. Mare Crisium produces a robust signal in some cases (however, Crisium is too large for a 'feature' as defined). TLP count consistency for these features indicates that {approx}80% of these may be real. Some commonly reported sites disappear from the robust averages, including Alphonsus, Ross D, and Gassendi. These reports begin almost exclusively after 1955, when TLPs became widely known and many more (and inexperienced) observers searched for TLPs. In a companion paper, we compare the spatial distribution of robust TLP sites to transient outgassing (seen by Apollo and Lunar Prospector instruments). To a high confidence, robust TLP sites and those of lunar outgassing correlate strongly, further arguing for the reality of TLPs.

  12. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal, Annual Progress Report, October 1, 2005 through September 30, 2006

    SciTech Connect (OSTI)

    Bruce G. Miller

    2006-09-29T23:59:59.000Z

    Since 1998, The Pennsylvania State University has been successfully managing the Consortium for Premium Carbon Products from Coal (CPCPC), which is a vehicle for industry-driven research on the promotion, development, and transfer of innovative technology on premium carbon produces from coal to the U.S. industry. The CPCPC is an initiative being led by Penn State, its co-charter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provides the base funding for the program, with Penn State responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity has continued under the present cooperative agreement, No. DE-FC26-03NT41874, which started October 1, 2003. The objective of the second agreement is to continue the successful operation of the CPCPC. The CPCPC has enjoyed tremendous success with its organizational structure, that includes Penn State and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC is its industry-led council that selects proposals submitted by CPCPC members to ensure CPCPC target areas have strong industrial support. Base funding for the selected projects is provided by NETL with matching funds from industry. At the annual funding meeting held in October 2003, ten projects were selected for funding. Subcontracts were let from Penn State to the subcontractors on March 1, 2004. Nine of the ten 2004 projects were completed during the previous annual reporting period and their final reports were submitted with the previous annual report (i.e., 10/01/04-09/30/05). The final report for the remaining project, which was submitted during this reporting period (i.e., 10/01/05-09/30/06), is attached. At the annual funding meeting held in November 2004, eleven projects were selected for funding. Subcontracts were let from Penn State to the subcontractors on March 1, 2005. Three additional projects were selected for funding during the April 2005 tutorial/funding meeting. Subcontracts were let from Penn State to the subcontractors on July 1, 2005. Of these fourteen 2005 projects, eleven have been completed and the final reports are attached. An annual funding meeting was held in November 2005 and the council selected five projects for funding. Subcontracts were let from Penn State to the subcontractors on March 1, 2006, except for one that started October 1, 2006.

  13. An Industrial-Based Consortium to Develop Premium Carbon Products from Coal, Annual Progress Report, October 1, 2004 through September 30, 2005

    SciTech Connect (OSTI)

    Miller, Bruce G

    2006-03-01T23:59:59.000Z

    Since 1998, The Pennsylvania State University (PSU) has been successfully operating the Consortium for Premium Carbon Products from Coal (CPCPC), which is a vehicle for industry-driven research on the promotion, development, and transfer of innovative technology on premium carbon produces from coal to the U.S. industry. The CPCPC is an initiative being led by PSU, its co-charter member West Virginia University (WVU), and the U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL), who also provides the base funding for the program, with PSU responsible for consortium management. CPCPC began in 1998 under DOE Cooperative Agreement No. DE-FC26-98FT40350. This agreement ended November 2004 but the CPCPC activity has continued under the present cooperative agreement, No. DE-FC26-03NT41874, which started October 1, 2003. The objective of the second agreement is to continue the successful operation of the CPCPC. The CPCPC has enjoyed tremendous success with its organizational structure, that includes PSU and WVU as charter members, numerous industrial affiliate members, and strategic university affiliate members together with NETL, forming a vibrant and creative team for innovative research in the area of transforming coal to carbon products. The key aspect of CPCPC is its industry-led council that selects proposals submitted by CPCPC members to ensure CPCPC target areas have strong industrial support. A second contract was executed with DOE NETL starting in October 2003 to continue the activities of CPCPC. An annual funding meeting was held in October 2003 and the council selected ten projects for funding. Base funding for the projects is provided by NETL with matching funds from industry. Subcontracts were let from Penn State to the subcontractors on March 1, 2004. Nine of the ten projects have been completed and the final reports for these 2004 projects are attached. An annual funding meeting was held in November 2004 and the council selected eleven projects for funding. Subcontracts were let from Penn State to the subcontractors on March 1, 2005. Three additional projects were selected for funding during the April 2005 tutorial/funding meeting. Subcontracts were let from Penn State to the subcontractors on July 1, 2005.

  14. Regularization of spherical and axisymmetric evolution codes in numerical relativity

    E-Print Network [OSTI]

    Milton Ruiz; Miguel Alcubierre; Dario Nunez

    2007-09-11T23:59:59.000Z

    Several interesting astrophysical phenomena are symmetric with respect to the rotation axis, like the head-on collision of compact bodies, the collapse and/or accretion of fields with a large variety of geometries, or some forms of gravitational waves. Most current numerical relativity codes, however, can not take advantage of these symmetries due to the fact that singularities in the adapted coordinates, either at the origin or at the axis of symmetry, rapidly cause the simulation to crash. Because of this regularity problem it has become common practice to use full-blown Cartesian three-dimensional codes to simulate axi-symmetric systems. In this work we follow a recent idea idea of Rinne and Stewart and present a simple procedure to regularize the equations both in spherical and axi-symmetric spaces. We explicitly show the regularity of the evolution equations, describe the corresponding numerical code, and present several examples clearly showing the regularity of our evolutions.

  15. Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani1, Markus M¨uller-Olm Bouajjani, Markus M¨uller-Olm, and Tayssir Touili parallel calls. In a multithreaded program such a command

  16. Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani 1 , Markus MË?uller­Olm #12; 474 Ahmed Bouajjani, Markus MË?uller­Olm, and Tayssir Touili parallel calls. In a multithreaded

  17. Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems

    E-Print Network [OSTI]

    Touili, Tayssir

    Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani 1 , Markus MË?uller­Olm Bouajjani, Markus MË?uller­Olm, and Tayssir Touili parallel calls. In a multithreaded program such a command

  18. Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Regular Symbolic Analysis of Dynamic Networks of Pushdown Systems Ahmed Bouajjani1, Markus M¨uller-Olm #12;474 Ahmed Bouajjani, Markus M¨uller-Olm, and Tayssir Touili parallel calls. In a multithreaded

  19. Koszul Algebras, Castelnuovo-Mumford Regularity, and Generic ...

    E-Print Network [OSTI]

    2013-06-12T23:59:59.000Z

    27. 3.2 Equivalent definitions of regularity using hyperplane sections . . . 29 .... A standard graded K-algebra R is said to be Koszul if its residue field K has a ...

  20. Quasinormal modes of test fields around regular black holes

    E-Print Network [OSTI]

    Bobir Toshmatov; Ahmadjon Abdujabbarov; Zden?k Stuchlík; Bobomurat Ahmedov

    2015-04-25T23:59:59.000Z

    We study scalar, electromagnetic and gravitational test fields in the Hayward, Bardeen and Ay\\'on-Beato-Garc\\'ia regular black hole spacetimes and demonstrate that the test fields are stable in all these spacetimes. Using the sixth order WKB approximation of the linear "axial" perturbative scheme, we determine dependence of the quasinormal mode (QNM) frequencies on the characteristic parameters of the test fields and the spacetime charge parameters of the regular black holes. We give also the greybody factors, namely the transmission and reflection coefficients of scattered scalar, electromagnetic and gravitational waves. We show that damping of the QNMs in regular black hole spacetimes is suppressed in comparison to the case of Schwarzschild black holes, and increasing charge parameter of the regular black holes increases reflection and decreases transmission factor of incident waves for each of the test fields.

  1. Regular step arrays on silicon J. Viernow,a)

    E-Print Network [OSTI]

    Himpsel, Franz J.

    Regular step arrays on silicon J. Viernow,a) J.-L. Lin, D. Y. Petrovykh, F. M. Leibsle,b) F. K. Men, as well as magnetoresistive sensors on sawtooth-shaped semiconductors.1 Particularly appealing are self

  2. Optimization Online - On the Moreau-Yosida regularization of the ...

    E-Print Network [OSTI]

    Bin Wu

    2011-03-30T23:59:59.000Z

    Mar 30, 2011 ... On the Moreau-Yosida regularization of the vector k-norm related functions. Bin Wu(wubin ***at*** nus.edu.sg) Chao Ding(dingchao ***at*** ...

  3. REGULAR ARTICLE Mapping the membrane proteome of Corynebacterium

    E-Print Network [OSTI]

    Roegner, Matthias

    REGULAR ARTICLE Mapping the membrane proteome of Corynebacterium glutamicum Daniela Schluesener proteins. For analysis of the membrane proteome from Corynebacterium glutamicum, we replaced the first exchange chromatography / Corynebacterium glutamicum / Intrinsic mem- brane protein / Mass spectrometry

  4. Quasinormal modes of test fields around regular black holes

    E-Print Network [OSTI]

    Bobir Toshmatov; Ahmadjon Abdujabbarov; Zden?k Stuchlík; Bobomurat Ahmedov

    2015-03-19T23:59:59.000Z

    We study scalar, electromagnetic and gravitational test fields in the Hayward, Bardeen and Ay\\'{o}n-Beato-Garc\\'{i}a regular black hole spacetimes and demonstrate that the test fields are stable in all these spacetimes. Using the sixth order WKB approximation of the linear "axial" perturbative scheme, we determine dependence of the quasinormal mode (QNM) frequencies on the characteristic parameters of the test fields and the spacetime charge parameters of the regular black holes. We give also the greybody factors, namely the transmission and reflection coefficients of scattered scalar, electromagnetic and gravitational waves. We show that damping of the QNMs in regular black hole spacetimes is suppressed in comparison to the case of Schwarzschild black holes, and increasing charge parameter of the regular black holes increases reflection and decreases transmission factor of incident waves for each of the test fields.

  5. EFFICIENT ALGORITHMS FOR SOLUTION OF REGULARIZED TOTAL LEAST SQUARES

    E-Print Network [OSTI]

    Renaut, Rosemary

    EFFICIENT ALGORITHMS FOR SOLUTION OF REGULARIZED TOTAL LEAST SQUARES ROSEMARY A. RENAUT AND HONGBIN-1804 (renaut@asu.edu, hb guo@asu.edu). 457 #12;458 ROSEMARY A. RENAUT AND HONGBIN GUO Here · denotes the 2-norm

  6. Renormalized Light Front Hamiltonian in the Pauli-Villars Regularization

    E-Print Network [OSTI]

    M. Yu. Malyshev; S. A. Paston; E. V. Prokhvatilov; R. A. Zubov

    2014-09-03T23:59:59.000Z

    We address the problem of nonperturbative calculations on the light front in quantum field theory regularized by Pauli-Villars method. As a preliminary step we construct light front Hamiltonians in (2+1)-dimensional $\\lambda\\phi^4$ model, for the cases without and with spontaneous symmetry breaking. The renormalization of these Hamiltonians in Pauli-Villars regularization is carried out via comparison of all-order perturbation theory, generated by these Hamiltonians, and the corresponding covariant perturbation theory in Lorentz coordinates.

  7. Regular Type III and Type N Approximate Solutions

    E-Print Network [OSTI]

    Philip Downes; Paul MacAllevey; Bogdan Nita; Ivor Robinson

    2001-05-18T23:59:59.000Z

    New type III and type N approximate solutions which are regular in the linear approximation are shown to exist. For that, we use complex transformations on self-dual Robinson-Trautman metrics rather then the classical approach. The regularity criterion is the boundedness and vanishing at infinity of a scalar obtained by saturating the Bel-Robinson tensor of the first approximation by a time-like vector which is constant with respect to the zeroth approximation.

  8. Simple regularization scheme for multi-reference density functional theories

    E-Print Network [OSTI]

    Wojciech Satula; Jacek Dobaczewski

    2014-07-03T23:59:59.000Z

    Background: Extensions of single-reference (SR) energy-density-functionals (EDFs) to multi-reference (MR) applications involve using the generalized Wick theorem (GWT), which leads to singular energy kernels that cannot be properly integrated to restore symmetries, unless the EDFs are generated by true interactions. Purpose: We propose a new method to regularize the MR EDFs, which is based on using auxiliary quantities obtained by multiplying the kernels with appropriate powers of overlaps. Methods: Regularized matrix elements of two-body interactions are obtained by integrating the auxiliary quantities and then solving simple linear equations. Results: We implement the new regularization method within the self-consistent Skyrme-Hartree-Fock approach and we perform a proof-of-principle angular-momentum projection (AMP) of states in odd-odd nucleus 26Al. We show that for EDFs generated by true interactions, our regularization method gives results identical to those obtained within the standard AMP procedure. We also show that for EDFs that do not correspond to true interactions, it gives stable and converging results that are different than unstable and non-converging standard AMP values. Conclusions: The new regularization method proposed in this work may provide us with a relatively inexpensive and efficient tool to generalize SR EDFs to MR applications, thus allowing for symmetry restoration and configuration mixing performed for typical nuclear EDFs, which most often do not correspond to true interactions.

  9. Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 14, January--March 1996

    SciTech Connect (OSTI)

    Moro, N.; Shields, G.L.; Smit, F.J.; Jha, M.C.

    1996-04-30T23:59:59.000Z

    The primary goal of this project is the engineering development of two advanced physical fine coal cleaning processes, column flotation and selective agglomeration, for premium fuel applications. The project scope includes laboratory research and bench-scale testing on six coals to optimize these processes, followed by the design, construction, and operation of a 2-t/hr process development unit (PDU). The project began in October, 1992, and is scheduled for completion by June 1997. During Quarter 14 (January--March 1996), parametric testing of the 30-inch Microcel{trademark} flotation column at the Lady Dunn Plant continued under Subtask 3.2. Subtask 3. 3 testing, investigating a novel Hydrophobic Dewatering process (HD), continued this quarter with parametric testing of the batch dewatering unit. Coal product moistures of 3 to 12 percent were achieved, with higher percent solids slurry feeds resulting in lower product moistures. For a given percent solids feed, the product moisture decreased with increasing butane to dry coal ratios. Stirring time, stirring rate, and settling time were all found to have little effect on the final moisture content. Continuing Subtask 6.4 work, investigating coal-water-fuel slurry formulation for coals cleaned by selective agglomeration, indicated that pH adjustment to 10 resulted in marginally better (lower viscosity) slurries for one of the two coals tested. Subtask 6.5 agglomeration bench-scale testing results indicate that the new Taggart coal requires a grind with a d{sub 80} of approximately 33 microns to achieve the 1 lb ash/MBtu product quality specification. Also under Subtask 6.5, reductions in the various trace element concentrations accomplished during selective agglomeration were determined. Work was essentially completed on the detailed design of the PDU selective agglomeration module under Task 7 with the issuing of a draft report.

  10. Semi-Blind Image Restoration via Mumford-Shah Regularization

    E-Print Network [OSTI]

    Sochen, Nir

    Semi-Blind Image Restoration via Mumford-Shah Regularization L. Bar N. Sochen N. Kiryati School. The proposed variational method integrates semi-blind image deconvolution (paramet- ric blur is in the unified treatment of the semi-blind restoration and segmentation problems, the important special case

  11. Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns

    E-Print Network [OSTI]

    Cook, Diane J.

    Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns Edwin O in an environment can be mined to discover significant patterns, which an intelligent agent could use to automate of two prediction algorithms, thus demonstrating multiple uses for a home automation system. Finally, we

  12. Hierarchical regularization for edge-preserving reconstruction of PET images

    E-Print Network [OSTI]

    Bardsley, John

    Hierarchical regularization for edge-preserving reconstruction of PET images Johnathan M. Bardsley.somersalo@case.edu Abstract. The data in PET emission and transmission tomography and in low dose X-ray tomography, consists that the algorithm gives good quality reconstructions for both emission and transmission PET problems in an efficient

  13. Parallel algorithm and hybrid regularization for dynamic PET reconstruction

    E-Print Network [OSTI]

    Boyer, Edmond

    Parallel algorithm and hybrid regularization for dynamic PET reconstruction N. Pustelnik, Student Abstract--To improve the estimation at the voxel level in dynamic Positron Emission Tomography (PET in the presence of Poisson noise and it is extended here to (dynamic) space + time PET image reconstruction

  14. Hierarchical regularization for edge-preserving reconstruction of PET images

    E-Print Network [OSTI]

    Bardsley, John

    1 Hierarchical regularization for edge-preserving reconstruction of PET images Johnathan M. Bardsley , Daniela Calvetti, and Erkki Somersalo Abstract--The data in PET emission and transmission tomog for both emission and transmission PET problems at very low computational cost. Index Terms

  15. Landscape regularity modelling for environmental challenges in agriculture

    E-Print Network [OSTI]

    Boyer, Edmond

    Landscape regularity modelling for environmental challenges in agriculture El Ghali Lazrak Jean-Fran¸cois Mari Marc Beno^it Abstract In agricultural landscapes, methods to identify and describe meaningful and ecological processes. We pro- pose an innovative stochastic modelling method of agricultural landscape

  16. Marshall's and Milnor's Conjectures for Preordered von Neumann Regular Rings

    E-Print Network [OSTI]

    Marshall's and Milnor's Conjectures for Preordered von Neumann Regular Rings M. Dickmann F a proper preorder T, satisfies Marshall's signature conjecture and Milnor's Witt ring conjecture (for result can be summarized as follows: 1) Marshall's signature conjecture was proved in [DM1

  17. On recent advances on regular Marc Moreno Maza

    E-Print Network [OSTI]

    Moreno Maza, Marc

    associated with Sat(T) dim(P) = n - m and P k[B] = {0}. Every non-zero p k[B] is regular mod- ulo Sat dim(P) = n - m and P k[B] = {0}. Moreover J is radical (Lazard's Lemma). #12;Characteristic sets

  18. Regularity and Uniqueness of Solutions to a Parabolic System

    E-Print Network [OSTI]

    Jüngel, Ansgar

    is denoted by J i , the energy ux density or heat ux is denoted by J n+1 , and #26; n+1 is the internal. Furthermore, the uniqueness of weak solutions is proved. The proof is based on an elliptic dual method and temporal regularity, uniqueness of weak solutions, semidiscretization of time, elliptic dual method. 1991

  19. HIGHER REGULARITY OF THE FREE BOUNDARY IN THE ...

    E-Print Network [OSTI]

    2014-06-19T23:59:59.000Z

    cise asymptotic behavior of the solutions near regular free boundary points. The second and main ...... Next, we compute the Weiss energy functional. W0(r, u) = 1 ..... Theorem 3.4. There exists a small constant ? = ?u > 0, such that T is a home-.

  20. SYNAPTIC MECHANISMS Weber's law implies neural discharge more regular than

    E-Print Network [OSTI]

    Feng, Jianfeng

    SYNAPTIC MECHANISMS Weber's law implies neural discharge more regular than a Poisson process Jing, interspike interval, psychophysical law, spike rate Abstract Weber's law is one of the basic laws established. In this paper, we carried out an analysis on the spike train statistics when Weber's law holds

  1. Student Employment Application (Regular or Work-Study)

    E-Print Network [OSTI]

    Student Employment Application (Regular or Work-Study) Revised: 11/16/2012 Name: Date: Last First No Are you eligible for work study? Yes No Are you currently employed in any other departments on campus? Yes presently legally authorized to work in the United States? Yes No Employment History: (Please list your work

  2. REGULAR ARTICLE Characterization of bacterial endophytes of sweet

    E-Print Network [OSTI]

    Doty, Sharon Lafferty

    REGULAR ARTICLE Characterization of bacterial endophytes of sweet potato plants Zareen Khan.V. 2009 Abstract Endophytic bacteria associated with sweet potato plants (Ipomoea batatas (L.) Lam.) were by the endophytes had any role in protecting the cells against adverse conditions, different stress tests were

  3. REGULARIZATION OF A PROGRAMMED RECURRENT ARTIFICIAL NEURAL NETWORK

    E-Print Network [OSTI]

    Meade, Andrew J.

    REGULARIZATION OF A PROGRAMMED RECURRENT ARTIFICIAL NEURAL NETWORK Andrew J. Meade, Jr. Department ARTIFICIAL NEURAL NETWORK Andrew J. Meade, Jr. Department of Mechanical Engineering and Materials Science into an artificial neural network architecture. GTR provides a rational means of combining theoretical models

  4. ORIGINAL PAPER Responses of red deer (Cervus elaphus) to regular

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ORIGINAL PAPER Responses of red deer (Cervus elaphus) to regular disturbance by hill walkers Angela calving rates in elk Cervus elaphus canadensis have been linked to human disturbance (Philips-recognised that the effect of disturbance can vary with its predictability; unexpected events, such as hill walkers

  5. Microcosmos In addition to the regular physics major, we

    E-Print Network [OSTI]

    Saldin, Dilano

    Physics II (1) Physics 309 Modern Physics (3) Physics 270 Computational Physics (3) or 370 Physics 317 Thermodynamics (3) Physics 409 Modern Physics Lab* (3) Physics 411 Mechanics (4) Physics 420 ElectricityCosmos to Microcosmos In addition to the regular physics major, we also offer a physics major

  6. Empirical Regularities of Asymmetric Pricing in the Gasoline Industry

    E-Print Network [OSTI]

    Niebur, Ernst

    pricing in the retail gasoline industry, and also documents empirical regularities in the market. I find of asymmetric price movements in the retail gasoline industry. Yet, there is no general agreement as to whether asym- metric pricing is widespread throughout the retail gasoline industry or merely an anomaly

  7. Indexing and Querying XML Data for Regular Path Expressions

    E-Print Network [OSTI]

    Moon, Bongki

    by generating interactive site maps [19]. To retrieve XML and semi-structured data, several query languages have of XML data sources from docu- ments to databases and object repositories. The common featuresIndexing and Querying XML Data for Regular Path Expressions £ Quanzhong Li Bongki Moon Dept

  8. BUDGET FORM AUTHORIZATION FOR COMMITMENT TO A REGULAR STAFF POSITION

    E-Print Network [OSTI]

    Thompson, Michael

    BUDGET FORM AUTHORIZATION FOR COMMITMENT TO A REGULAR STAFF POSITION GOVERNED BY THE UNIVERSITY OPERATING BUDGET POLICY (BUDGETING SERVICES) BUDGET UNIT: BUDGET UNIT MANAGER: ENVELOPE: ENVELOPE MANAGER/contract compensation cost: $ FUNDING, BUDGET AND PLANNING INFORMATION (to be provided by Budget Unit Manager

  9. IMPROVED CONVERGENCE PROPERTIES OF THE LIN-FUKUSHIMA-REGULARIZATION METHOD

    E-Print Network [OSTI]

    Kanzow, Christian

    IMPROVED CONVERGENCE PROPERTIES OF THE LIN-FUKUSHIMA-REGULARIZATION METHOD FOR MATHEMATICAL@mathematik.uni-wuerzburg.de September 2, 2010 Dedicated to Masao Fukushima, in great respect, on the occasion of his 60th birthday. 1 with complementarity constraints (MPCC) introduced by Gui-Hua Lin and Masao Fukushima. Existing convergence results

  10. Seismic Data Reconstruction via Shearlet-Regularized Directional Inpainting

    E-Print Network [OSTI]

    Steidl, Gabriele

    Seismic Data Reconstruction via Shearlet-Regularized Directional Inpainting S¨oren H¨auser and Jianwei Ma May 15, 2012 We propose a new method for seismic data reconstruction by directional weighted of thousands of meters with a good resolution, the seismic method has become the most commonly used geophysical

  11. ITERATIVE TOTAL VARIATION REGULARIZATION WITH NON-QUADRATIC FIDELITY

    E-Print Network [OSTI]

    Burger, Martin

    , AND STANLEY J. OSHER Abstract. A generalized iterative regularization procedure based on the total variation still eliminate high-frequency noise. However, the ROF model (1.1) has certain limitations. Meyer has with the norm ||w|| = inf g,w= ·g ess sup x |g(x)| , Meyer provided arguments in favour of considering elements

  12. Computationally Efficient Regularized Inversion for Highly Parameterized MODFLOW Models

    E-Print Network [OSTI]

    Barrash, Warren

    . INTRODUCTION The inverse problem in groundwater modeling is generally ill-posed and non-unique. The typical geological heterogeneity has not been possible in common groundwater modeling practice. The principal reasons-Marquardt methods, and (3) lack of experience within the groundwater modeling community with regularized inversion

  13. Unobtrusive Tabletops: Linking Personal Devices with Regular Tables

    E-Print Network [OSTI]

    1 Unobtrusive Tabletops: Linking Personal Devices with Regular Tables Abstract In this paper we with spatially tracked touch-enabled personal devices. This retains the normal usage of tabletop surfaces, solves privacy issues, and allows for storage of media items on the personal devices. Moreover, user input can

  14. 1INFORMS 10/04 RegularRegular Variation and Financial TimeVariation and Financial Time

    E-Print Network [OSTI]

    financial time series IBM returns Multiplicative models for log-returns (GARCH, SV) Regular variation variation Stochastic recurrence equations (GARCH) Point process convergence Extremes and extremal index for volatility: (i) GARCH(p,q) process (General AutoRegressive Conditional Heteroscedastic

  15. On Linear Landau Damping for Relativistic Plasmas via Gevrey Regularity

    E-Print Network [OSTI]

    Brent Young

    2015-04-30T23:59:59.000Z

    We examine the phenomenon of Landau Damping in relativistic plasmas via a study of the relativistic Vlasov-Poisson system (both on the torus and on $\\mathbb{R}^3$) linearized around a sufficiently nice, spatially uniform kinetic equilibrium. We find that exponential decay of spatial Fourier modes is impossible under modest symmetry assumptions. However, by assuming the equilibrium and initial data are sufficiently regular functions of velocity for a given wavevector (in particular that they exhibit a kind of Gevrey regularity), we show that it is possible for the mode associated to this wavevector to decay sub-exponentially if its magnitude exceeds a certain critical size. We also give a heuristic argument why one should not expect such rapid decay for modes with wavevectors below this threshold.

  16. Genealogies of regular exchangeable coalescents with applications to sampling

    E-Print Network [OSTI]

    Limic, Vlada

    2010-01-01T23:59:59.000Z

    This article considers a model of genealogy corresponding to a regular exchangeable coalescent (also known as Xi-coalescent) started from a large finite configuration, and undergoing neutral mutations. Asymptotic expressions for the number of active lineages were obtained by the author in a previous work. Analogous results for the number of active mutation-free lineages and the combined lineage lengths are derived using the same martingale-based technique. They are given in terms of convergence in probability, while extensions to convergence in moments and convergence almost surely are discussed. The above mentioned results have direct consequences on the sampling theory in the Xi-coalescent setting. In particular, the regular Xi-coalescents that come down from infinity (i.e., with locally finite genealogies), have an asymptotically equal number of families under the corresponding infinite alleles and infinite sites models. In special cases, quantitative asymptotic formulae for the number of families that con...

  17. A characterization of Q-polynomial distance-regular graphs

    E-Print Network [OSTI]

    Jurisic, Aleksandar; Zitnik, Arjana

    2009-01-01T23:59:59.000Z

    We obtain the following characterization of $Q$-polynomial distance-regular graphs. Let $\\G$ denote a distance-regular graph with diameter $d\\ge 3$. Let $E$ denote a minimal idempotent of $\\G$ which is not the trivial idempotent $E_0$. Let $\\{\\theta_i^*\\}_{i=0}^d$ denote the dual eigenvalue sequence for $E$. We show that $E$ is $Q$-polynomial if and only if (i) the entry-wise product $E \\circ E$ is a linear combination of $E_0$, $E$, and at most one other minimal idempotent of $\\G$; (ii) there exists a complex scalar $\\beta$ such that $\\theta^*_{i-1}-\\beta \\theta^*_i + \\theta^*_{i+1}$ is independent of $i$ for $1 \\le i \\le d-1$; (iii) $\\theta^*_i \

  18. Rotating Hayward's regular black hole as particle accelerator

    E-Print Network [OSTI]

    Muhammed Amir; Sushant G. Ghosh

    2015-06-10T23:59:59.000Z

    Recently, Ban\\~{a}dos, Silk and West (BSW) demonstrated that the extremal Kerr black hole can act as a particle accelerator with arbitrarily high center-of-mass energy ($E_{CM}$) when the collision takes place near the horizon. The rotating Hayward's regular black hole, apart from Mass ($M$) and angular momentum ($a$), has a new parameter $g$ ($g>0$ is a constant) that provides a deviation from the Kerr black hole. We demonstrate that for each $g$, with $M=1$, there exist critical $a_{E}$ and $r_{H}^{E}$, which corresponds to a regular extremal black hole with degenerate horizon, and $a_{E}$ decreases and $r_{H}^{E}$ increases with increase in $g$. While $aparticle accelerator and thus in turn may provide a suitable framework for Plank-scale physics. For a non-extremal case, there always exist a finite upper bound of $E_{CM}$, which increases with deviation parameter $g$.

  19. Existence and Regularity for Dynamic Viscoelastic Adhesive Contact with Damage

    SciTech Connect (OSTI)

    Kuttler, Kenneth L. [Department of Mathematics, Brigham Young University, Provo, UT 84602 (United States)], E-mail: klkuttler@math.byu.edu; Shillor, Meir [Department of Mathematics and Statistics, Oakland University, Rochester, MI 48309 (United States)], E-mail: shillor@oakland.edu; Fernandez, Jose R. [Departamento de Matematica Aplicada, Facultade de Matematicas, University of Santiago de Compostela, 15706 Santiago de Compostela (Spain)], E-mail: jramon@usc.es

    2006-01-15T23:59:59.000Z

    A model for the dynamic process of frictionless adhesive contact between a viscoelastic body and a reactive foundation, which takes into account the damage of the material resulting from tension or compression, is presented. Contact is described by the normal compliance condition. Material damage is modelled by the damage field, which measures the pointwise fractional decrease in the load-carrying capacity of the material, and its evolution is described by a differential inclusion. The model allows for different damage rates caused by tension or compression. The adhesion is modelled by the bonding field, which measures the fraction of active bonds on the contact surface. The existence of the unique weak solution is established using the theory of set-valued pseudomonotone operators introduced by Kuttler and Shillor (1999). Additional regularity of the solution is obtained when the problem data is more regular and satisfies appropriate compatibility conditions.

  20. SMALL POROSITY, DIMENSION AND REGULARITY IN METRIC MEASURE SPACES

    E-Print Network [OSTI]

    Jyväskylä, University of

    with an s-regular measure µ. We prove that if A X is -porous, then dimp(A) s - c s where dimp with µ(N) = 0 such that dimp(A) dimp(X) - c(log 1 )-1 t for all -porous sets A X \\ N. Here c that if A Rn is -porous, meaning that A contains holes of relative size at all small scales, then dimp(A) n

  1. Modeling the Jovian subnebula: II - Composition of regular satellites ices

    E-Print Network [OSTI]

    Olivier Mousis; Yann Alibert

    2005-10-28T23:59:59.000Z

    We use the evolutionary turbulent model of Jupiter's subnebula described by Alibert et al. (2005a) to constrain the composition of ices incorporated in its regular icy satellites. We consider CO2, CO, CH4, N2, NH3, H2S, Ar, Kr, and Xe as the major volatile species existing in the gas-phase of the solar nebula. All these volatile species, except CO2 which crystallized as a pure condensate, are assumed to be trapped by H2O to form hydrates or clathrate hydrates in the solar nebula. Once condensed, these ices were incorporated into the growing planetesimals produced in the feeding zone of proto-Jupiter. Some of these solids then flowed from the solar nebula to the subnebula, and may have been accreted by the forming Jovian regular satellites. We show that ices embedded in solids entering at early epochs into the Jovian subdisk were all vaporized. This leads us to consider two different scenarios of regular icy satellites formation in order to estimate the composition of the ices they contain. In the first scenario, icy satellites were accreted from planetesimals that have been produced in Jupiter's feeding zone without further vaporization, whereas, in the second scenario, icy satellites were accreted from planetesimals produced in the Jovian subnebula. In this latter case, we study the evolution of carbon and nitrogen gas-phase chemistries in the Jovian subnebula and we show that the conversions of N2 to NH3, of CO to CO2, and of CO to CH4 were all inhibited in the major part of the subdisk. Finally, we assess the mass abundances of the major volatile species with respect to H2O in the interiors of the Jovian regular icy satellites. Our results are then compatible with the detection of CO2 on the surfaces of Callisto and Ganymede and with the presence of NH3 envisaged in subsurface oceans within Ganymede and Callisto.

  2. The Pumping Lemma Some languages are not regular languages.

    E-Print Network [OSTI]

    Bylander, Tom

    be the number of states in M. Create a long string w L. Show that if M accepts w, then M must accept some string w L. This contradicts assumption that L(M) = L. #12;2 Proof of the Pumping Lemma Theorem: Let L be a regular language. There exists a number m, for all w, if |w| m and w L, then there exists x, y, z

  3. Vol. 41 No. 6 IPSJ Journal June 6 Regular Paper

    E-Print Network [OSTI]

    Roussos, George

    to be interchangeable in a Lego-like manner. Moreover, its low power radio (based on the 2.4GHz Nordic nRF2401 designVol. 41 No. 6 IPSJ Journal June 6 Regular Paper Sensor Cube: A Modular, Ultra-Compact, Power and C. Van Hoof The Sensor Cube platform is an ultra-compact, modular and power-aware way of building

  4. Frustration tuning in regular and random superconducting networks

    E-Print Network [OSTI]

    Chen, Raymond Lei

    1988-01-01T23:59:59.000Z

    . Yasskin (Member ) Richard Arnorcitt (Head of Dc partnsent) December 1988 ABSTRACT Frustration Tuning in Regular and Random Superconducting Networks. (December 1988) Raymond Lei Chen, B. S. , University of Science E' Technology of China Chairman... 2-dimensional rectangular network having a translational symmetry, the equation can be reduced to a one dimensional linear difference equation which can be solved by using an iteration method to find the "ground state" and its corresponding...

  5. Exploring California PV Home Premiums

    E-Print Network [OSTI]

    Hoen, Ben

    2014-01-01T23:59:59.000Z

    of Photovoltaic Energy Systems on Residential Selling PricesResidential Photovoltaic Energy Systems on Home Sales PricesResidential Photovoltaic Energy Systems on Home Sales Prices

  6. Percentile Premium Calculations.pdf

    E-Print Network [OSTI]

    Microsoft account

    2015-04-17T23:59:59.000Z

    1. You are given: a. Mortality follows the Illustrative Life Table b. 6% i = Huang Life Insurance Company sells whole life insurance policies of 250,000 to lives age ...

  7. Impact on asteroseismic analyses of regular gaps in Kepler data

    E-Print Network [OSTI]

    Garc?a, R A; Pires, S; Regulo, C; Bellamy, B; Palle, P L; Ballot, J; Forteza, S Barcelo; Beck, P G; Bedding, T R; Ceillier, T; Cortes, T Roca; Salabert, D; Stello, D

    2014-01-01T23:59:59.000Z

    The NASA Kepler mission has observed more than 190,000 stars in the constellations of Cygnus and Lyra. Around 4 years of almost continuous ultra high-precision photometry have been obtained reaching a duty cycle higher than 90% for many of these stars. However, almost regular gaps due to nominal operations are present in the light curves at different time scales. In this paper we want to highlight the impact of those regular gaps in asteroseismic analyses and we try to find a method that minimizes their effect in the frequency domain. To do so, we isolate the two main time scales of quasi regular gaps in the data. We then interpolate the gaps and we compare the power density spectra of four different stars: two red giants at different stages of their evolution, a young F-type star, and a classical pulsator in the instability strip. The spectra obtained after filling the gaps in the selected solar-like stars show a net reduction in the overall background level, as well as a change in the background parameters....

  8. Regularization of zero-range effective interactions in finite nuclei

    E-Print Network [OSTI]

    Marco Brenna; Gianluca Colò; Xavier Roca-Maza

    2014-10-06T23:59:59.000Z

    The problem of the divergences which arise in beyond mean-field calculations, when a zero-range effective interaction is employed, has not been much considered so far. Some of us have proposed, quite recently, a scheme to regularize a zero-range Skyrme-type force when it is employed to calculate the total energy, at second-order perturbation theory level, in uniform matter. Although this scheme looked promising, the extension for finite nuclei is not straightforward. We introduce such procedure in the current paper, by proposing a regularization procedure that is similar, in spirit, to the one employed to extract the so-called V_{\\rm low-k} from the bare force. Although this has been suggested already by B.G. Carlsson and collaborators, the novelty of our work consists in setting on equal footing uniform matter and finite nuclei; in particular, we show how the interactions that have been regularized in uniform matter behave when they are used in a finite nucleus with the corresponding cutoff. We also address the problem of the validity of the perturbative approach in finite nuclei for the total energy.

  9. BRST Invariant PV Regularization of SUSY Yang-Mills and SUGRA

    E-Print Network [OSTI]

    Gaillard, Mary K

    2012-01-01T23:59:59.000Z

    September 2011 BRST Invariant PV Regularization of SUSYemployer. ii BRST INVARIANT PV REGULARIZATION OF SUSY YANG-a number of years on Pauli-Villars (PV) regu- larization of

  10. Lyapunov functions for evolution variational inequalities with locally prox-regular sets

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Lyapunov functions for evolution variational inequalities with locally prox-regular sets Abderrahim criterion for Lyapunov pairs of this dynamical system and some results on the asymptotic behaviour - Uniformly prox-regular set - Hypomonotonicity - Lyapunov pair - Asymptotic behaviour. Mathematics Subject

  11. A Regularity Lemma, and Low-weight Approximators, for Low-degree Polynomial Threshold Functions

    E-Print Network [OSTI]

    Servedio, Rocco

    University {ilias, rocco, liyang, atw12}@cs.columbia.edu March 15, 2010 Abstract We give a "regularity lemma

  12. Automatic Construction of Large-Scale Regular Expression Matching Engines on FPGA

    E-Print Network [OSTI]

    Prasanna, Viktor K.

    Automatic Construction of Large-Scale Regular Expression Matching Engines on FPGA Yi-Hua E. Yang@usc.edu, prasanna@usc.edu Abstract--We present algorithms for implementing large-scale regular expression matching (REM) on FPGA. Based on the proposed algorithms, we develop tools that first transform regular

  13. Spatially-Variant Tikhonov Regularization for Double-Difference Waveform Inversion

    SciTech Connect (OSTI)

    Lin, Youzuo [Los Alamos National Laboratory; Huang, Lianjie [Los Alamos National Laboratory; Zhang, Zhigang [Los Alamos National Laboratory

    2011-01-01T23:59:59.000Z

    Double-difference waveform inversion is a potential tool for quantitative monitoring for geologic carbon storage. It jointly inverts time-lapse seismic data for changes in reservoir geophysical properties. Due to the ill-posedness of waveform inversion, it is a great challenge to obtain reservoir changes accurately and efficiently, particularly when using time-lapse seismic reflection data. Regularization techniques can be utilized to address the issue of ill-posedness. The regularization parameter controls the smoothness of inversion results. A constant regularization parameter is normally used in waveform inversion, and an optimal regularization parameter has to be selected. The resulting inversion results are a trade off among regions with different smoothness or noise levels; therefore the images are either over regularized in some regions while under regularized in the others. In this paper, we employ a spatially-variant parameter in the Tikhonov regularization scheme used in double-difference waveform tomography to improve the inversion accuracy and robustness. We compare the results obtained using a spatially-variant parameter with those obtained using a constant regularization parameter and those produced without any regularization. We observe that, utilizing a spatially-variant regularization scheme, the target regions are well reconstructed while the noise is reduced in the other regions. We show that the spatially-variant regularization scheme provides the flexibility to regularize local regions based on the a priori information without increasing computational costs and the computer memory requirement.

  14. The smallest k-regular h-edge-connected graphs without , Douglas B. West

    E-Print Network [OSTI]

    West, Douglas B.

    -regular graph with no cut-edge has a 1-factor. This has many generalizations. Showing that every kThe smallest k-regular h-edge-connected graphs without 1-factors John Ganci , Douglas B. West March-regular (k - 1)-edge-connected graph of even order has a 1-factor is a standard elementary exercise (#3

  15. Smoothness criteria for Navier-Stokes equations in terms of regularity along the steam lines

    E-Print Network [OSTI]

    Chan, Chi Hin

    2007-01-01T23:59:59.000Z

    This article is devoted to a regularity criteria for solutions of the Navier-Stokes equations in terms of regularity along the stream lines. More precisely, we prove that a suitable weak solution for the Navier-Stokes equations is regular under some constraint on the second derivative of |u| along the stream lines.

  16. Three regularization models of the Navier-Stokes equations

    E-Print Network [OSTI]

    J. Pietarila Graham; Darryl Holm; Pablo Mininni; Annick Pouquet

    2008-01-11T23:59:59.000Z

    We determine how the differences in the treatment of the subfilter-scale physics affect the properties of the flow for three closely related regularizations of Navier-Stokes. The consequences on the applicability of the regularizations as SGS models are also shown by examining their effects on superfilter-scale properties. Numerical solutions of the Clark-alpha model are compared to two previously employed regularizations, LANS-alpha and Leray-alpha (at Re ~ 3300, Taylor Re ~ 790) and to a DNS. We derive the Karman-Howarth equation for both the Clark-alpha and Leray-alpha models. We confirm one of two possible scalings resulting from this equation for Clark as well as its associated k^(-1) energy spectrum. At sub-filter scales, Clark-alpha possesses similar total dissipation and characteristic time to reach a statistical turbulent steady-state as Navier-Stokes, but exhibits greater intermittency. As a SGS model, Clark reproduces the energy spectrum and intermittency properties of the DNS. For the Leray model, increasing the filter width decreases the nonlinearity and the effective Re is substantially decreased. Even for the smallest value of alpha studied, Leray-alpha was inadequate as a SGS model. The LANS energy spectrum k^1, consistent with its so-called "rigid bodies," precludes a reproduction of the large-scale energy spectrum of the DNS at high Re while achieving a large reduction in resolution. However, that this same feature reduces its intermittency compared to Clark-alpha (which shares a similar Karman-Howarth equation). Clark is found to be the best approximation for reproducing the total dissipation rate and the energy spectrum at scales larger than alpha, whereas high-order intermittency properties for larger values of alpha are best reproduced by LANS-alpha.

  17. Quantum Cooling Evaporation Process in Regular Black Holes

    E-Print Network [OSTI]

    Yun Soo Myung; Yong-Wan Kim; Young-Jai Park

    2007-09-28T23:59:59.000Z

    We investigate a universal behavior of thermodynamics and evaporation process for the regular black holes. We newly observe an important point where the temperature is maximum, the heat capacity is changed from negative infinity to positive infinity, and the free energy is minimum. Furthermore, this point separates the evaporation process into the early stage with negative heat capacity and the late stage with positive heat capacity. The latter represents the quantum cooling evaporation process. As a result, the whole evaporation process could be regarded as the inverse Hawking-Page phase transition.

  18. Thin-shell wormholes from regular charged black holes

    E-Print Network [OSTI]

    F. Rahaman; K A Rahman; Sk. A Rakib; Peter K. F. Kuhfittig

    2009-09-06T23:59:59.000Z

    We investigate a new thin-shell wormhole constructed by surgically grafting two regular charged black holes arising from the action using nonlinear electrodynamics coupled to general relativity. The stress-energy components within the shell violate the null and weak energy conditions but obey the strong energy condition. We study the stability in two ways: (i) taking a specific equation of state at the throat and (ii) analyzing the stability to linearized spherically symmetric perturbations about a static equilibrium solution. Various other aspects of this thin-shell wormhole are also analyzed.

  19. Regularization of Kerr-NUT spacetimes and their thermodynamical quantities

    E-Print Network [OSTI]

    Nashed, G G L

    2015-01-01T23:59:59.000Z

    In the context of the teleparallel equivalent of general relativity (TEGR) theory, continues calculations of the total energy and momentum for Kerr-NUT spacetimes using three different methods, the gravitational energy-momentum, the Riemannian connection 1-form, ${\\widetilde{\\Gamma}_\\alpha}^\\beta$ and the Euclidean continuation method, have been achieved. Many local Lorentz transformations, that play the role of regularizing tool, are given to get the commonly known form of energy and momentum. We calculate the thermodynamic quantities of Kerr-NUT spacetime. We also investigate the first law of thermodynamics and quantum statistical relation.

  20. Regularization of Kerr-NUT spacetimes and their thermodynamical quantities

    E-Print Network [OSTI]

    G. G. L. Nashed

    2015-04-27T23:59:59.000Z

    In the context of the teleparallel equivalent of general relativity (TEGR) theory, continues calculations of the total energy and momentum for Kerr-NUT spacetimes using three different methods, the gravitational energy-momentum, the Riemannian connection 1-form, ${\\widetilde{\\Gamma}_\\alpha}^\\beta$ and the Euclidean continuation method, have been achieved. Many local Lorentz transformations, that play the role of regularizing tool, are given to get the commonly known form of energy and momentum. We calculate the thermodynamic quantities of Kerr-NUT spacetime. We also investigate the first law of thermodynamics and quantum statistical relation.

  1. 9.0 Non-Regular Languages and the Pumping Lemma Languages that can be described formally with an NFA, DFA, or a regular

    E-Print Network [OSTI]

    Gordon, Scott

    9.0 Non-Regular Languages and the Pumping Lemma Languages that can be described formally to be useful to us here. The Pumping Lemma This theorem describes a property that a language must have in order - to show when a language is not regular. That is always how the pumping lemma is used. Briefly, the pumping

  2. Regularization approach for tomosynthesis X-ray inspection

    SciTech Connect (OSTI)

    Tigkos, Konstantinos; Hassler, Ulf; Holub, Wolfgang; Woerlein, Norbert; Rehak, Markus [Fraunhofer Development Center X-ray Technologies (EZRT), Dept. Application Specific Methods and Systems (AMS), Fraunhofer IIS, Flugplatzstraße 75, 90768 Fürth (Germany)

    2014-02-18T23:59:59.000Z

    X-ray inspection is intended to be used as an escalation technique for inspection of carbon fiber reinforced plastics (CFRP) in aerospace applications, especially in case of unclear indications from ultrasonic or other NDT modalities. Due to their large dimensions, most aerospace components cannot be scanned by conventional computed tomography. In such cases, X-ray Laminography may be applied, allowing a pseudo 3D slice-by-slice reconstruction of the sample with Tomosynthesis. However, due to the limited angle acquisition geometry, reconstruction artifacts arise, especially at surfaces parallel to the imaging plane. To regularize the Tomosynthesis approach, we propose an additional prescan of the object to detect outer sample surfaces. We recommend the use of contrasted markers which are temporarily attached to the sample surfaces. The depth position of the markers is then derived from that prescan. As long as the sample surface remains simple, few markers are required to fit the respective object surfaces. The knowledge about this surface may then be used to regularize the final Tomosynthesis reconstruction, performed with markerless projections. Eventually, it can also serve as prior information for an ART reconstruction or to register a CAD model of the sample. The presented work is carried out within the European FP7 project QUICOM. We demonstrate the proposed approach within a simulation study applying an acquisition geometry suited for CFRP part inspection. A practical verification of the approach is planned later in the project.

  3. Exceptional and regular spectra of a generalized Rabi model

    E-Print Network [OSTI]

    Michael Tomka; Omar El Araby; Mikhail Pletyukhov; Vladimir Gritsev

    2014-12-05T23:59:59.000Z

    We study the spectrum of the generalized Rabi model in which co- and counter-rotating terms have different coupling strengths. It is also equivalent to the model of a two-dimensional electron gas in a magnetic field with Rashba and Dresselhaus spin-orbit couplings. Like in case of the Rabi model, the spectrum of the generalized Rabi model consists of the regular and the exceptional parts. The latter is represented by the energy levels which cross at certain parameters' values which we determine explicitly. The wave functions of these exceptional states are given by finite order polynomials in the Bargmann representation. The roots of these polynomials satisfy a Bethe ansatz equation of the Gaudin type. At the exceptional points the model is therefore quasi-exactly solvable. An analytical approximation is derived for the regular part of the spectrum in the weak- and strong-coupling limits. In particular, in the strong-coupling limit the spectrum consists of two quasi-degenerate equidistant ladders.

  4. Constructing a logical, regular axis topology from an irregular topology

    DOE Patents [OSTI]

    Faraj, Daniel A.

    2014-07-01T23:59:59.000Z

    Constructing a logical regular topology from an irregular topology including, for each axial dimension and recursively, for each compute node in a subcommunicator until returning to a first node: adding to a logical line of the axial dimension a neighbor specified in a nearest neighbor list; calling the added compute node; determining, by the called node, whether any neighbor in the node's nearest neighbor list is available to add to the logical line; if a neighbor in the called compute node's nearest neighbor list is available to add to the logical line, adding, by the called compute node to the logical line, any neighbor in the called compute node's nearest neighbor list for the axial dimension not already added to the logical line; and, if no neighbor in the called compute node's nearest neighbor list is available to add to the logical line, returning to the calling compute node.

  5. Constructing a logical, regular axis topology from an irregular topology

    DOE Patents [OSTI]

    Faraj, Daniel A.

    2014-07-22T23:59:59.000Z

    Constructing a logical regular topology from an irregular topology including, for each axial dimension and recursively, for each compute node in a subcommunicator until returning to a first node: adding to a logical line of the axial dimension a neighbor specified in a nearest neighbor list; calling the added compute node; determining, by the called node, whether any neighbor in the node's nearest neighbor list is available to add to the logical line; if a neighbor in the called compute node's nearest neighbor list is available to add to the logical line, adding, by the called compute node to the logical line, any neighbor in the called compute node's nearest neighbor list for the axial dimension not already added to the logical line; and, if no neighbor in the called compute node's nearest neighbor list is available to add to the logical line, returning to the calling compute node.

  6. Regular graphs maximize the variability of random neural networks

    E-Print Network [OSTI]

    Gilles Wainrib; Mathieu Galtier

    2014-12-17T23:59:59.000Z

    In this work we study the dynamics of systems composed of numerous interacting elements interconnected through a random weighted directed graph, such as models of random neural networks. We develop an original theoretical approach based on a combination of a classical mean-field theory originally developed in the context of dynamical spin-glass models, and the heterogeneous mean-field theory developed to study epidemic propagation on graphs. Our main result is that, surprisingly, increasing the variance of the in-degree distribution does not result in a more variable dynamical behavior, but on the contrary that the most variable behaviors are obtained in the regular graph setting. We further study how the dynamical complexity of the attractors is influenced by the statistical properties of the in-degree distribution.

  7. Small particle limits in a regularized Laplacian random growth model

    E-Print Network [OSTI]

    Fredrik Johansson Viklund; Alan Sola; Amanda Turner

    2013-10-23T23:59:59.000Z

    We study a regularized version of Hastings-Levitov planar random growth that models clusters formed by the aggregation of diffusing particles. In this model, the growing clusters are defined in terms of iterated slit maps whose capacities are given by c_n=c|\\Phi_{n-1}'(e^{\\sigma+i\\theta_n})|^{-\\alpha}, \\alpha \\geq 0, where c>0 is the capacity of the first particle, {\\Phi_n}_n are the composed conformal maps defining the clusters of the evolution, {\\theta_n}_n are independent uniform angles determining the positions at which particles are attached, and \\sigma>0 is a regularization parameter which we take to depend on c. We prove that under an appropriate rescaling of time, in the limit as c converges to 0, the clusters converge to growing disks with deterministic capacities, provided that \\sigma does not converge to 0 too fast. We then establish scaling limits for the harmonic measure flow, showing that by letting \\alpha tend to 0 at different rates it converges to either the Brownian web on the circle, a stopped version of the Brownian web on the circle, or the identity map. As the harmonic measure flow is closely related to the internal branching structure within the cluster, the above three cases intuitively correspond to the number of infinite branches in the model being either 1, a random number whose distribution we obtain, or unbounded, in the limit as c converges to 0. We also present several findings based on simulations of the model with parameter choices not covered by our rigorous analysis.

  8. Mathematical strategies for filtering complex systems: Regularly spaced sparse observations

    SciTech Connect (OSTI)

    Harlim, J. [Department of Mathematics and Center for Atmosphere and Ocean Science, Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, NY 10012 (United States)], E-mail: jharlim@cims.nyu.edu; Majda, A.J. [Department of Mathematics and Center for Atmosphere and Ocean Science, Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, NY 10012 (United States)

    2008-05-01T23:59:59.000Z

    Real time filtering of noisy turbulent signals through sparse observations on a regularly spaced mesh is a notoriously difficult and important prototype filtering problem. Simpler off-line test criteria are proposed here as guidelines for filter performance for these stiff multi-scale filtering problems in the context of linear stochastic partial differential equations with turbulent solutions. Filtering turbulent solutions of the stochastically forced dissipative advection equation through sparse observations is developed as a stringent test bed for filter performance with sparse regular observations. The standard ensemble transform Kalman filter (ETKF) has poor skill on the test bed and even suffers from filter divergence, surprisingly, at observable times with resonant mean forcing and a decaying energy spectrum in the partially observed signal. Systematic alternative filtering strategies are developed here including the Fourier Domain Kalman Filter (FDKF) and various reduced filters called Strongly Damped Approximate Filter (SDAF), Variance Strongly Damped Approximate Filter (VSDAF), and Reduced Fourier Domain Kalman Filter (RFDKF) which operate only on the primary Fourier modes associated with the sparse observation mesh while nevertheless, incorporating into the approximate filter various features of the interaction with the remaining modes. It is shown below that these much cheaper alternative filters have significant skill on the test bed of turbulent solutions which exceeds ETKF and in various regimes often exceeds FDKF, provided that the approximate filters are guided by the off-line test criteria. The skill of the various approximate filters depends on the energy spectrum of the turbulent signal and the observation time relative to the decorrelation time of the turbulence at a given spatial scale in a precise fashion elucidated here.

  9. A discrete L-curve for the regularization of ill-posed inverse problems

    E-Print Network [OSTI]

    2012-05-23T23:59:59.000Z

    May 10, 2012 ... regularization, the method proposed in [26] by Hansen and O'Leary ... of Hansen, Jensen and Rodriguez [25] and the triangle method of ...

  10. Metastable behavior for bootstrap percolation on regular trees

    E-Print Network [OSTI]

    Marek Biskup; Roberto H. Schonmann

    2009-07-25T23:59:59.000Z

    We examine bootstrap percolation on a regular (b+1)-ary tree with initial law given by Bernoulli(p). The sites are updated according to the usual rule: a vacant site becomes occupied if it has at least theta occupied neighbors, occupied sites remain occupied forever. It is known that, when b>theta>1, the limiting density q=q(p) of occupied sites exhibits a jump at some p_t=p_t(b,theta) in (0,1) from q_t:=q(p_t)p_t. We investigate the metastable behavior associated with this transition. Explicitly, we pick p=p_t+h with h>0 and show that, as h decreases to 0, the system lingers around the "critical" state for time order h^{-1/2} and then passes to fully occupied state in time O(1). The law of the entire configuration observed when the occupation density is q in (q_t,1) converges, as h tends to 0, to a well-defined measure.

  11. Dynamically self-regular quantum harmonic black holes

    E-Print Network [OSTI]

    Spallucci, Euro

    2015-01-01T23:59:59.000Z

    The recently proposed UV self-complete quantum gravity program is a new and very interesting way to envision Planckian/trans-Planckian physics. in this new framework, high energy scattering is dominated by the creation of micro black holes, and it is experimentally impossible to probe distances shorter than the horizon radius. In this letter we present a model which realizes this idea through the creation of self-regular quantum black holes admitting a minimal size extremal configuration. Their radius provides a dynamically generated minimal length acting as a universal short-distance cut-off. We propose a quantisation scheme for this new kind of microscopic objects based on a Bohr-like approach, which does not require a detailed knowledge of quantum gravity. The resulting black hole quantum picture resembles the energy spectrum of a quantum harmonic oscillator. The mass of the extremal configuration plays the role of zero-point energy. Large quantum number re-establish the classical black hole description. F...

  12. Solubility in Compressible Polymers: Beyond the Regular Solution Theory

    E-Print Network [OSTI]

    Albert A. Smith; P. D. Gujrati

    2006-04-17T23:59:59.000Z

    The age-old idea of "like dissolves like" requires a notion of "likeness" that is hard to quantify for polymers. We revisit the concepts of pure component cohesive energy density $c^{\\text{P}}$ and mutual cohesive energy density $c_{12}$ so that they can be extended to polymers. We recognize the inherent limitations of $c_{12}$ due to its very definition, which is based on the assumption of no volume of mixing (true for incompressible systems), one of the assumptions in the random mixing approximation (RMA); no such limitations are present in the identification of $c^{\\text{P}}.$ We point out that the other severe restriction on $c_{12}$ is the use of pure components in its definition because of which $c_{12}$ is not merely controlled by mutual interactions. Another quantity $c_{12}^{\\text{SRS}}$ as a measure of mutual cohesive energy density that does not suffer from the above limitations of $c_{12}$ is introduced. We also revisit the concept of the internal pressure and its relationship with the conventional and the newly defined cohesive energy densities. We pay close attention to volume of mixing effects, and carry out a comprehensive reanalysis of various quantities using a recently developed recursive lattice theory in our group, which goes beyond the regular solution theory such as the Flory-Huggins theory for polymers.

  13. Asymptotic Analysis of Regularized Zero-Forcing Precoding in MISO Broadcast Channels

    E-Print Network [OSTI]

    Boyer, Edmond

    Asymptotic Analysis of Regularized Zero-Forcing Precoding in MISO Broadcast Channels with Limited analyse the asymptotic sum-rate of regularized zero-forcing (RZF) precoding in MISO broadcast channels equivalent of mfK @zA. III. SYSTEM MODEL Consider the MISO broadcast channel composed of one central

  14. REGULAR TRACE FORMULA AND BASE CHANGE FOR GLn Yuval Z. Flicker

    E-Print Network [OSTI]

    Flicker, Yuval

    REGULAR TRACE FORMULA AND BASE CHANGE FOR GLn Yuval Z. Flicker Department of Mathematics, The Ohio aim here is to develop the regular trace formula of F2 from the context of GL2 to that of a reductive representations of GLn which have a supercuspidal component. Our motivation is the belief that a formula

  15. Regular black holes: Electrically charged solutions, Reissner-Nordstroem outside a de Sitter core

    SciTech Connect (OSTI)

    Lemos, Jose P. S.; Zanchin, Vilson T. [Centro Multidisciplinar de Astrofisica - CENTRA, Departamento de Fisica, Instituto Superior Tecnico - IST, Universidade Tecnica de Lisboa - UTL, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adelia, 166, 09210-170, Santo Andre, Sao Paulo (Brazil); Coordenadoria de Astronomia e Astrofisica, Observatorio Nacional-MCT, Rua General Jose Cristino 77, 20921-400 Rio de Janeiro (Brazil)

    2011-06-15T23:59:59.000Z

    To have the correct picture of a black hole as a whole, it is of crucial importance to understand its interior. The singularities that lurk inside the horizon of the usual Kerr-Newman family of black hole solutions signal an endpoint to the physical laws and, as such, should be substituted in one way or another. A proposal that has been around for sometime is to replace the singular region of the spacetime by a region containing some form of matter or false vacuum configuration that can also cohabit with the black hole interior. Black holes without singularities are called regular black holes. In the present work, regular black hole solutions are found within general relativity coupled to Maxwell's electromagnetism and charged matter. We show that there are objects which correspond to regular charged black holes, whose interior region is de Sitter, whose exterior region is Reissner-Nordstroem, and the boundary between both regions is made of an electrically charged spherically symmetric coat. There are several types of solutions: regular nonextremal black holes with a null matter boundary, regular nonextremal black holes with a timelike matter boundary, regular extremal black holes with a timelike matter boundary, and regular overcharged stars with a timelike matter boundary. The main physical and geometrical properties of such charged regular solutions are analyzed.

  16. 31.01.01.M2 Salary Increases Not Awarded Through the Regular Budget Cycle

    E-Print Network [OSTI]

    31.01.01.M2 Salary Increases Not Awarded Through the Regular Budget Cycle Page 1 of 3 UNIVERSITY RULE 31.01.01.M2 Salary Increases Not Awarded Through the Regular Budget Cycle Approved March 19, 1997 budget cycle. As with all practices, however, some flexibility is needed to respond to exceptional

  17. Technical Reports Ultra-low Dose Lung CT Perfusion Regularized by

    E-Print Network [OSTI]

    Virginia Tech

    Technical Reports Ultra-low Dose Lung CT Perfusion Regularized by a Previous Scan1 Hengyong Yu, Ph­regularized reconstruction (PSRR) method was proposed to reduce radiation dose and applied to lung perfusion studies. Normal and ultra-low-dose lung computed tomographic perfusion studies were compared in terms of the estimation

  18. Upper bound on the packing density of regular tetrahedra and octahedra

    E-Print Network [OSTI]

    Gravel, Simon; Kallus, Yoav

    2010-01-01T23:59:59.000Z

    We obtain an upper bound to the packing density of regular tetrahedra. The bound is obtained by showing the existence, in any packing of regular tetrahedra, of a set of disjoint spheres centered on tetrahedron edges, so that each sphere is not fully covered by the packing. The bound on the amount of space that is not covered in each sphere is obtained in a recursive way by building on the observation that non-overlapping regular tetrahedra cannot subtend a solid angle of $4\\pi$ around a point if this point lies on a tetrahedron edge. The proof can be readily modified to apply to other polyhedra with the same property. The resulting lower bound on the fraction of empty space in a packing of regular tetrahedra is $2.6\\ldots\\times 10^{-25}$ and reaches $1.4\\ldots\\times 10^{-12}$ for regular octahedra.

  19. Upper bound on the packing density of regular tetrahedra and octahedra

    E-Print Network [OSTI]

    Simon Gravel; Veit Elser; Yoav Kallus

    2010-08-17T23:59:59.000Z

    We obtain an upper bound to the packing density of regular tetrahedra. The bound is obtained by showing the existence, in any packing of regular tetrahedra, of a set of disjoint spheres centered on tetrahedron edges, so that each sphere is not fully covered by the packing. The bound on the amount of space that is not covered in each sphere is obtained in a recursive way by building on the observation that non-overlapping regular tetrahedra cannot subtend a solid angle of $4\\pi$ around a point if this point lies on a tetrahedron edge. The proof can be readily modified to apply to other polyhedra with the same property. The resulting lower bound on the fraction of empty space in a packing of regular tetrahedra is $2.6\\ldots\\times 10^{-25}$ and reaches $1.4\\ldots\\times 10^{-12}$ for regular octahedra.

  20. Franklin Completed Jobs

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

    results to show 50 100 500 1,000 5,000 10,000 Refine search User Repo Not Exec Queue All CCM CCM Interactive Debug Interactive Premium Regular 1 Hour Regular Short Regular Long...

  1. Regularization of soft-X-ray imaging in the DIII-D tokamak

    SciTech Connect (OSTI)

    Wingen, Andreas [ORNL; Shafer, Morgan W [ORNL; Unterberg, Ezekial A [ORNL; Hill, Judith C [ORNL; Hillis, Donald Lee [ORNL

    2015-01-01T23:59:59.000Z

    An image inversion scheme for the soft X-ray imaging system (SXRIS) diagnostic at the DIII-D tokamak is developed to obtain the local soft X-ray emission at a poloidal cross-section from the spatially line-integrated image taken by the SXRIS camera. The scheme uses the Tikhonov regularization method since the inversion problem is generally ill-posed. The regularization technique uses the generalized singular value decomposition to determine a solution that depends on a free regularization parameter. The latter has to be chosen carefully, and the so called {\\it L-curve} method to find the optimum regularization parameter is outlined. A representative test image is used to study the properties of the inversion scheme with respect to inversion accuracy, amount/strength of regularization, image noise and image resolution. The optimum inversion parameters are identified, while the L-curve method successfully computes the optimum regularization parameter. Noise is found to be the most limiting issue, but sufficient regularization is still possible at noise to signal ratios up to 10%-15%. Finally, the inversion scheme is applied to measured SXRIS data and the line-integrated SXRIS image is successfully inverted.

  2. REGULAR MEETING OF THE FACULTY SENATE The University of Oklahoma (Norman campus)

    E-Print Network [OSTI]

    Oklahoma, University of

    REGULAR MEETING OF THE FACULTY SENATE The University of Oklahoma (Norman campus) May 5, 2014, 3 Baker, Donald R. Social Work 8/16/2013 1988 Brule, William Steve Dance 8/16/2013 2004 Cherry Jr., Andrew

  3. BRST invariant PV regularization of SUSY Yang-Mills and SUGRA

    E-Print Network [OSTI]

    Mary K. Gaillard

    2011-09-14T23:59:59.000Z

    Pauli-Villars regularization of Yang-Mills theories and of supergravity theories is outlined, with an emphasis on BRST invariance. Applications to phenomenology and the anomaly structure of supergravity are discussed.

  4. FETI-R (Part II): A regularized variational approach for Finite Element Tearing and

    E-Print Network [OSTI]

    FETI-R (Part II): A regularized variational approach for Finite Element Tearing and Interconnecting Laboratories y Albuquerque, New Mexico 87185 Abstract The coarse grid problem of the original FETI method

  5. Timing in the Absence of Supraspinal Input: Effects of Temporally Regular Stimulation on Spinal Plasticity

    E-Print Network [OSTI]

    Lee, Kuan Hsien

    2013-08-08T23:59:59.000Z

    task, in which response-contingent leg shock produces an increase in flexion duration. Exposure to temporally regular stimulation (fixed spaced stimulation; FT) promotes learning, and temporally irregular stimulation produces a learning deficit...

  6. Phase transitions of regular Schwarzschild-Anti-deSitter black holes

    E-Print Network [OSTI]

    Frassino, Antonia Micol

    2015-01-01T23:59:59.000Z

    We study a solution of the Einstein's equations generated by a self-gravitating, anisotropic, static, non-singular matter fluid. The resulting Schwarzschild like solution is regular and accounts for smearing effects of noncommutative fluctuations of the geometry. We call this solution regular Schwarzschild spacetime. In the presence of an Anti-deSitter cosmological term, the regularized metric offers an extension of the Hawking-Page transition into a van der Waals-like phase diagram. Specifically the regular Schwarzschild-Anti-deSitter geometry undergoes a first order small/large black hole transition similar to the liquid/gas transition of a real fluid. In the present analysis we have considered the cosmological constant as a dynamical quantity and its variation is included in the first law of black hole thermodynamics.

  7. Reducing noise in moving-grid codes with strongly-centroidal Lloyd mesh regularization

    E-Print Network [OSTI]

    Mocz, Philip; Pakmor, Rudiger; Genel, Shy; Springel, Volker; Hernquist, Lars

    2015-01-01T23:59:59.000Z

    A method for improving the accuracy of hydrodynamical codes that use a moving Voronoi mesh is described. Our scheme is based on a new regularization scheme that constrains the mesh to be centroidal to high precision while still allowing the cells to move approximately with the local fluid velocity, thereby retaining the quasi-Lagrangian nature of the approach. Our regularization technique significantly reduces mesh noise that is attributed to changes in mesh topology and deviations from mesh regularity. We demonstrate the advantages of our method on various test problems, and note in particular improvements obtained in handling shear instabilities, mixing, and in angular momentum conservation. Calculations of adiabatic jets in which shear excites Kelvin Helmholtz instability show reduction of mesh noise and entropy generation. In contrast, simulations of the collapse and formation of an isolated disc galaxy are nearly unaffected, showing that numerical errors due to the choice of regularization do not impact ...

  8. Risk Bounds for Regularized Least-squares Algorithm with Operator-valued kernels

    E-Print Network [OSTI]

    Vito, Ernesto De

    2005-05-16T23:59:59.000Z

    We show that recent results in [3] on risk bounds for regularized least-squares on reproducing kernel Hilbert spaces can be straightforwardly extended to the vector-valued regression setting. We first briefly introduce ...

  9. Electromagnetic wave propagation with negative phase velocity in regular black holes

    SciTech Connect (OSTI)

    Sharif, M., E-mail: msharif.math@pu.edu.pk; Manzoor, R., E-mail: rubabmanzoor9@yahoo.com [University of the Punjab, Department of Mathematics (Pakistan)

    2012-12-15T23:59:59.000Z

    We discuss the propagation of electromagnetic plane waves with negative phase velocity in regular black holes. For this purpose, we consider the Bardeen model as a nonlinear magnetic monopole and the Bardeen model coupled to nonlinear electrodynamics with a cosmological constant. It turns out that the region outside the event horizon of each regular black hole does not support negative phase velocity propagation, while its possibility in the region inside the event horizon is discussed.

  10. The determination of efficient numerical integration schemes for two methods of regularized celestial mechanics

    E-Print Network [OSTI]

    Slack, Michael Lewis

    1974-01-01T23:59:59.000Z

    MECHANICS One Dimensional Regularization III TOTAL ENERGY AND REGULARIZATION 13 K-S Total Energy Element Functions Burdet Total Energy Element lunctions 14 15 IV NUMERICAL METHODS 17 Integration of Ordinary Differential Equations One-Step Methods... THE KUSTAANHEIMO-STIEFEL TRANSFOMATION APPENDIX B K-S TOTAL ENERGY FORMULATION APPENDIX C BURDET TOTAL ENERGY F0184UI. ATION APPENDIX D KSUR12 PROGRAM LISTING APPENDIX E BURDET PROGRAM LISTING APPENDIX F PROGRAM MODIFICATIONS APPENDIX G NUMFRICAL...

  11. Optimized estimates of the regularity of the conditional distribution of the sample mean

    E-Print Network [OSTI]

    Victor Chulaevsky

    2015-04-24T23:59:59.000Z

    We give an improved estimate for the regularity of the conditional distribution of the empiric mean of a finite sample of IID random variables, conditional on the sample "fluctuations", extending the well-known property of Gaussian IID samples. Specifically, we replace the bounds in probability, established in our earlier works, by those in distribution, and this results in the optimal regularity exponent in the final estimate.

  12. Pumping Lemma for Regular Sets: Let D = (Q, , , q0, F) be a DFA.

    E-Print Network [OSTI]

    Immerman, Neil

    Pumping Lemma for Regular Sets: Let D = (Q, , , q0, F) be a DFA. Let n = |Q|. Let w L(D) s.t. |w| n. Then x, y, z s.t. the following all hold: xyz = w |xy| n |y| > 0, and k 0 (xykz L(D)) Pumping Lemma for Regular Sets #12;proof: Let w L(D), |w| n, w = w1, w2, . . . , wn · u w = w1 w2 w3

  13. On regular solutions of the 3-D compressible isentropic Euler-Boltzmann equations with vacuum

    E-Print Network [OSTI]

    Yachun Li; Shengguo Zhu

    2014-10-07T23:59:59.000Z

    In this paper, we discuss the Cauchy Problem for the compressible isentropic Euler-Boltzmann equations with vacuum in radiation hydrodynamics. Firstly, we establish the local existence of regular solutions by the fundamental methods in the theory of quasi-linear symmetric hyperbolic systems under some physical assumptions. Then we give the non-global existence of regular solutions caused by the effect of vacuum for $1vacuum.

  14. SUMMER SCHOOLS SUMMER REGULAR CLASSES DISTANCE LEARNING Universit Laval will offer some 1,300 regular classes on its campus during the 2012

    E-Print Network [OSTI]

    Laval, Université

    (websites, written documents, virtual sessions, audio and video clips, animation, CD-ROMs, DVDs, and more), and student support and participation is provided through email, regular mail, discussion forums, virtual Representations of the Human Body June 26 to 30, 2012 Creative Workshop in Environmental Design July 2 to 6, 2012

  15. Inverse transport problem solvers based on regularized and compressive sensing techniques

    SciTech Connect (OSTI)

    Cheng, Y.; Cao, L.; Wu, H.; Zhang, H. [School of Nuclear Science and Technology, Xi'an Jiaotong Univ., Xianning West Road No.28, Xi'an, Shaanxi, 710049 (China)

    2012-07-01T23:59:59.000Z

    According to the direct exposure measurements from flash radiographic image, regularized-based method and compressive sensing (CS)-based method for inverse transport equation are presented. The linear absorption coefficients and interface locations of objects are reconstructed directly at the same time. With a large number of measurements, least-square method is utilized to complete the reconstruction. Owing to the ill-posedness of the inverse problems, regularized algorithm is employed. Tikhonov method is applied with an appropriate posterior regularization parameter to get a meaningful solution. However, it's always very costly to obtain enough measurements. With limited measurements, CS sparse reconstruction technique Orthogonal Matching Pursuit (OMP) is applied to obtain the sparse coefficients by solving an optimization problem. This paper constructs and takes the forward projection matrix rather than Gauss matrix as measurement matrix. In the CS-based algorithm, Fourier expansion and wavelet expansion are adopted to convert an underdetermined system to a well-posed system. Simulations and numerical results of regularized method with appropriate regularization parameter and that of CS-based agree well with the reference value, furthermore, both methods avoid amplifying the noise. (authors)

  16. Quasi Regular Polyhedra and Their Duals with Coxeter Symmetries Represented by Quaternions II

    E-Print Network [OSTI]

    Mehmet Koca; Mudhahir Al Ajmi; Saleh Al- Shidhani

    2010-06-15T23:59:59.000Z

    In this paper we construct the quasi regular polyhedra and their duals which are the generalizations of the Archimedean and Catalan solids respectively. This work is an extension of two previous papers of ours which were based on the Archimedean and Catalan solids obtained as the orbits of the Coxeter groups . When these groups act on an arbitrary vector in 3D Euclidean space they generate the orbits corresponding to the quasi regular polyhedra. Special choices of the vectors lead to the platonic and Archimedean solids. In general, the faces of the quasi regular polyhedra consist of the equilateral triangles, squares, regular pentagons as well as rectangles, isogonal hexagons, isogonal octagons, and isogonal decagons depending on the choice of the Coxeter groups of interest. We follow the quaternionic representation of the group elements of the Coxeter groups which necessarily leads to the quaternionic representation of the vertices. We note the fact that the molecule can best be represented by a truncated icosahedron where the hexagonal faces are not regular, rather, they are isogonal hexagons where single bonds and double bonds of the carbon atoms are represented by the alternating edge lengths of isogonal hexagons.

  17. First-order quantum phase transitions: test ground for emergent chaoticity, regularity and persisting symmetries

    E-Print Network [OSTI]

    M. Macek; A. Leviatan

    2014-09-22T23:59:59.000Z

    We present a comprehensive analysis of the emerging order and chaos and enduring symmetries, accompanying a generic (high-barrier) first-order quantum phase transition (QPT). The interacting boson model Hamiltonian employed, describes a QPT between spherical and deformed shapes, associated with its U(5) and SU(3) dynamical symmetry limits. A classical analysis of the intrinsic dynamics reveals a rich but simply-divided phase space structure with a H\\'enon-Heiles type of chaotic dynamics ascribed to the spherical minimum and a robustly regular dynamics ascribed to the deformed minimum. The simple pattern of mixed but well-separated dynamics persists in the coexistence region and traces the crossing of the two minima in the Landau potential. A quantum analysis discloses a number of regular low-energy U(5)-like multiplets in the spherical region, and regular SU(3)-like rotational bands extending to high energies and angular momenta, in the deformed region. These two kinds of regular subsets of states retain their identity amidst a complicated environment of other states and both occur in the coexistence region. A symmetry analysis of their wave functions shows that they are associated with partial U(5) dynamical symmetry (PDS) and SU(3) quasi-dynamical symmetry (QDS), respectively. The pattern of mixed but well-separated dynamics and the PDS or QDS characterization of the remaining regularity, appear to be robust throughout the QPT. Effects of kinetic collective rotational terms, which may disrupt this simple pattern, are considered.

  18. On a regularized family of models for the full Ericksen-Leslie system

    E-Print Network [OSTI]

    Ciprian G. Gal; Louis Tebou

    2014-09-15T23:59:59.000Z

    We consider a general family of regularized systems for the full Ericksen-Leslie model for the hydrodynamics of liquid crystals in $n$-dimensional compact Riemannian manifolds, $n$=2,3. The system we consider consists of a regularized family of Navier-Stokes equations (including the Navier Stokes-$\\alpha $-like equation, the Leray-$\\alpha $ equation, the Modified Leray-$\\alpha $ equation, the Simplified Bardina model, the Navier Stokes-Voigt model and the Navier-Stokes equation) for the fluid velocity $u$ suitably coupled with a parabolic equation for the director field $d$. We establish existence, stability and regularity results for this family. We also show the existence of a finite dimensional global attractor for our general model, and then establish sufficiently general conditions under which each trajectory converges to a single equilibrium by means of a Lojasiewicz-Simon inequality.

  19. Regularized energy-dependent solar flare hard x-ray spectral index

    E-Print Network [OSTI]

    Eduard P. Kontar; Alexander L. MacKinnon

    2005-06-05T23:59:59.000Z

    The deduction from solar flare X-ray photon spectroscopic data of the energy dependent model-independent spectral index is considered as an inverse problem. Using the well developed regularization approach we analyze the energy dependency of spectral index for a high resolution energy spectrum provided by Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The regularization technique produces much smoother derivatives while avoiding additional errors typical of finite differences. It is shown that observations imply a spectral index varying significantly with energy, in a way that also varies with time as the flare progresses. The implications of these findings are discussed in the solar flare context.

  20. Increasing Biofuel Deployment through Renewable Super Premium

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

    by 2022 (EISA 2007) RENEWABLE FUEL STANDARD * BETO Office Goal: "Enable nation-wide production of biofuels compatible with today's transportation infrastructure, reduce...

  1. The Equity Premium: A Deeper Puzzle

    E-Print Network [OSTI]

    Azeredo, Francisco

    2007-01-01T23:59:59.000Z

    222–227, 1981. [7] S. S. Kuznets. Commodity Flow and CapitalN.Y. , 1938. [8] S. S. Kuznets. National Income and ItsYork, N.Y. , 1941. [9] S. S. Kuznets. National Product since

  2. Premium Mobile Projector sony.com/projectors

    E-Print Network [OSTI]

    Saskatchewan, University of

    . It provides high light transmission and excellent color reproduction with high color light output+ . It also a simple, accurate, and easy-to- understand way to evaluate a projector's color performance to the right level · Built-in Auto Focus module, which focuses the projected image · Auto Vertical Keystone

  3. Understanding premium-efficiency motor economics

    SciTech Connect (OSTI)

    Hirzel, J. (GE Motors, Fort Wayne, IN (US))

    1992-04-30T23:59:59.000Z

    This paper reports that from a numerical standpoint, motors in continuous-duty service comprise only a fraction of those used in America's industrial plants. Not all plant engineers, however, are aware that the relatively few motors in continuous-duty service account for about 75% of all industrial electrical use. For motors in continuous-duty service, a few percentage points gain in efficiency can yield tremendous reductions in the plant electric bill energy charge. Acknowledgment of this fact has spawned the common practice of replacing less-efficient motors with types of more energy-efficient design. However, arbitrary application of this retrofit practice can be a costly mistake. To maximize return on investment, some basic factors must be understood and considered.

  4. Premium Power Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska:Precourt Institute for Energy Efficiency Jump to:OpenMassachusetts

  5. Avoid Nuisance Tripping with Premium Efficiency Motors

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments fromof Energy Automation WorldofAutotuneAvianAvoid Nuisance

  6. Increasing Biofuel Deployment through Renewable Super Premium

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet),EnergyImprovement of theResponses to Public

  7. Endemic infections are always possible on regular networks Charo I. Del Genio1, 2, 3, 4,

    E-Print Network [OSTI]

    Sengun, Mehmet Haluk

    , and Thomas House1, 2, 3, 1Warwick Mathematics Institute, University of Warwick, Gibbet Hill Road, Coventry understanding of the spread of diseases [14]. A common approach, especially in ecological or spatially address: T.A.House@warwick.ac.uk that the size of the largest component in regular networks is always

  8. REGULAR ARTICLE Soil erosion, runoff and nutrient losses in an avocado (Persea

    E-Print Network [OSTI]

    Lehmann, Johannes

    REGULAR ARTICLE Soil erosion, runoff and nutrient losses in an avocado (Persea americana Mill management systems on erosion and runoff processes associated with extremely steep hillside avocado (Persea several groundcover manage- ment systems at a steep hillside avocado planting in a three-year study: 1

  9. REGULAR PAPER Photoproduction of hydrogen by sulfur-deprived C. reinhardtii

    E-Print Network [OSTI]

    Meier, Iris

    dramatic was the effect of sulfur deprivation on the H2-production process, which depends both on the presREGULAR PAPER Photoproduction of hydrogen by sulfur-deprived C. reinhardtii mutants with impaired+Business Media B.V. 2007 Abstract Photoproduction of H2 was examined in a series of sulfur-deprived Chlamydomonas

  10. Spatially Regularized Logistic Regression for Disease Mapping on Large Moving Populations

    E-Print Network [OSTI]

    Vucetic, Slobodan

    . Categories and Subject Descriptors H.2.8 [Database Management]: Database Apps--Data Mining General Terms, Movement trajectories, Spatial-temporal data mining, Regularization, Privacy. 1. INTRODUCTION Disease, forestry, ecology, astronomy, and archeology [3]. There are two major methods for disease mapping

  11. Kinematics measurements of regular, irregular, and rogue waves by PIV/LDV

    E-Print Network [OSTI]

    Choi, Hae-Jin

    2007-04-25T23:59:59.000Z

    waves. A series of experiments were conducted in a 2-D wave tank at Texas A&M University to measure wave velocities and accelerations using LDV and PIV systems. The wave crests of regular and rogue waves are the focus of this study. With the measured...

  12. Predecessor Sets of Dynamic Pushdown Networks with TreeRegular Constraints

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Predecessor Sets of Dynamic Pushdown Networks with Tree­Regular Constraints Peter Lammich, Markus MË?uller­Olm­UniversitË?at MË?unster {peter.lammich,markus.mueller­olm,alexander.wenner}@uni­muenster.de Abstract. Dynamic, Markus MË?uller­Olm, and Alexander Wenner Usually, DPNs are analyzed w.r.t. an interleaving semantics

  13. Predecessor Sets of Dynamic Pushdown Networks with Tree-Regular Constraints

    E-Print Network [OSTI]

    Müller-Olm, Markus

    Predecessor Sets of Dynamic Pushdown Networks with Tree-Regular Constraints Peter Lammich, Markus M¨uller-Olm-Universit¨at M¨unster {peter.lammich,markus.mueller-olm,alexander.wenner}@uni-muenster.de Abstract. Dynamic, Markus M¨uller-Olm, and Alexander Wenner Usually, DPNs are analyzed w.r.t. an interleaving semantics

  14. Change of order for regular chains in positive dimension Xavier Dahan , Xin Jin

    E-Print Network [OSTI]

    Moreno Maza, Marc

    in dimension zero; ·Newton-Hensel lifting. Basic setup Let V be an irreducible variety of dimension r, defined, . . . , yr) kr , Ts(y, Z1, . . . , Zs) ... T1(y, Z1) Specialize and lift paradigm: intermediate computations. lift v in T; [dim. 1] 3. specialize w at a random value. [dim. 0] Algorithm Input. ·A regular chain Tin

  15. Regular PaperJ. Radiat. Res., 51, 657664 (2010) Adaptive Response in Zebrafish Embryos Induced Using

    E-Print Network [OSTI]

    Yu, K.N.

    2010-01-01T23:59:59.000Z

    in the zebrafish embryos in vivo. INTRODUCTION For radiation protection purposes, prediction of risk from this model is commonly adopted for radiation protection purposes, there is a considerable amount of evidenceRegular PaperJ. Radiat. Res., 51, 657­664 (2010) Adaptive Response in Zebrafish Embryos Induced

  16. Possible doublet mechanism for a regular component of parity violation in neutron scattering

    E-Print Network [OSTI]

    V. V. Flambaum; V. G. Zelevinsky

    1994-12-19T23:59:59.000Z

    A nucleus with octupole deformation of the mean field reveals rotational doublets with the same angular momentum and opposite parity. Mediated by the Coriolis-type interaction, the doublet structure leads to a strong regular component in the parity violation caused by weak interaction. This can explain sign correlations observed in polarized neutron scattering by $^{232}$Th.

  17. EFFECTIVE WAVELET-BASED REGULARIZATION OF DIVERGENCE-FREE FRACTIONAL BROWNIAN MOTION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EFFECTIVE WAVELET-BASED REGULARIZATION OF DIVERGENCE-FREE FRACTIONAL BROWNIAN MOTION P. H´EAS, S-free fractional Brownian Motion (fBm). The method is based on fractional Laplacian and divergence-free waveletBm priors, by simply sampling wavelet coefficients according to Gaussian white noise. Fractional Laplacians

  18. WAVELET DENOISING BASED ON LOCAL REGULARITY INFORMATION Antoine Echelard and Jacques Lvy-Vhel

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    WAVELET DENOISING BASED ON LOCAL REGULARITY INFORMATION Antoine Echelard and Jacques Lévy- posing the corrupted signal in a wavelet basis, processing the wavelet coefficients, and then going back, many real-world signals have a sparse structure in the wavelet domain, i.e. a few coefficients

  19. The structure of reflexive regular splicing languages via Schutzenberger constants \\Lambda

    E-Print Network [OSTI]

    Bonizzoni, Paola

    by Paun and Pixton respectively [16, 20]. The computational power of splicing systems has been thoroughlyThe structure of reflexive regular splicing languages via Sch¨utzenberger constants \\Lambda Paola generating) device, called a splicing system. Other variants of this original definition were also proposed

  20. REGULAR ARTICLE Impact of biological soil crusts and desert plants on soil

    E-Print Network [OSTI]

    Neher, Deborah A.

    REGULAR ARTICLE Impact of biological soil crusts and desert plants on soil microfaunal community are supplied by a variety of sources in the desert food web; both vascular and non-vascular plants and cyanobacteria supply carbon, and cyanobacteria and plant-associated rhizosphere bacteria are sources

  1. Rotational Symmetry and Regularization Dependence in the $?^4_4$-Model

    E-Print Network [OSTI]

    C. B. Lang; U. Winkler

    1992-09-07T23:59:59.000Z

    We study the one component $\\Phi^4$ model for four different lattice actions in the Gaussian limit and for the Ising model in the broken phase. Emphasis is put on the euclidean invariance properties of the boson propagator. A measure of the violation of rotational symmetry serves as a tool to compare the regularization dependence of the triviality bound.

  2. ADAPTIVE REGULARIZATION OF THE NL-MEANS FOR VIDEO DENOISING Camille Sutour1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to the noise statistic. C. Sutour would like to thank the DGA and the Aquitaine region for funding her PhD. J regularization. Besides, this model can be adapted to different noise statistics and a fast resolution can. The variational methods consist in minimizing an energy in order to force certain properties on the unknown

  3. DOI 10.1140/epje/i2013-13017-0 Regular Article

    E-Print Network [OSTI]

    Scheibert, Julien

    DOI 10.1140/epje/i2013-13017-0 Regular Article Eur. Phys. J. E (2013) 36: 17 THE EUROPEAN PHYSICAL. This local constitutive law, which involves a roughness-related length scale, is consistent with the model Amontons-Coulomb's framework, when two solids are brought in contact un- der a normal load P and subjected

  4. Global Gevrey Regularity for the B'enard Convection in Porous Medium with Zero

    E-Print Network [OSTI]

    Global Gevrey Regularity for the B'enard Convection in Porous Medium with Zero Darcy­Prandtl Number for the three­dimensional B'enard convection model in porous medium with zero Darcy­Prandtl number using system for energy conservation, enhancing recovery of oil by thermal methods, assessing risks for nuclear

  5. Proton: Multitouch Gestures as Regular Expressions Kenrick Kin1,2

    E-Print Network [OSTI]

    Agrawala, Maneesh

    Proton: Multitouch Gestures as Regular Expressions Kenrick Kin1,2 Bj¨orn Hartmann1 Tony DeRose2) know how to extend existing code to reliably recognize the complete gesture set. Proton is a novel frame- work that addresses both of these problems. Using Proton, the application developer declaratively

  6. Regular electrically charged structures in Nonlinear Electrodynamics coupled to General Relativity

    E-Print Network [OSTI]

    Irina Dymnikova

    2004-08-19T23:59:59.000Z

    We address the question of existence of regular spherically symmetric electrically charged solutions in Nonlinear Electrodynamics coupled to General Relativity. Stress-energy tensor of the electromagnetic field has the algebraic structure $T_0^0=T_1^1$. In this case the Weak Energy Condition leads to the de Sitter asymptotic at approaching a regular center. In de Sitter center of an electrically charged NED structure, electric field, geometry and stress-energy tensor are regular without Maxwell limit which is replaced by de Sitter limit: energy density of a field is maximal and gives an effective cut-off on self-energy density, produced by NED coupled to gravity and related to cosmological constant $\\Lambda$. Regular electric solutions satisfying WEC, suffer from one cusp in the Lagrangian ${\\cal L}(F)$, which creates the problem in an effective geometry whose geodesics are world lines of NED photons. We investigate propagation of photons and show that their world lines never terminate which suggests absence of singularities in the effective geometry. To illustrate these results we present the new exact analytic spherically symmetric electric solution with the de Sitter center.

  7. Enumerating the edge-colourings of a regular graph Stephane Bessy and Frederic Havet

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Enumerating the edge-colourings of a regular graph St´ephane Bessy and Fr´ed´eric Havet Assistant and Combinatorics Deparment of Applied Mathematics, National Sun Yat-sen University, Kaohsiung, Taiwan. S. Bessy. Bessy and F.Havet () Enumerating the edge-colourings WGTC, Kaohsiung, 2012 2 / 41 lirmm-00811571,version

  8. On viscosity solutions of certain Hamilton-Jacobi equations: Regularity results and generalized Sard's Theorems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On viscosity solutions of certain Hamilton-Jacobi equations: Regularity results and generalized prove that any viscosity solution of the corresponding Hamilton-Jacobi equation on the manifold M). Moreover, we prove that, under additional assumptions and in low dimension, any viscosity solution

  9. Please see the online version of this article for supplementary materials. Regularization Parameter Selections via

    E-Print Network [OSTI]

    Li, Richard Runze

    Please see the online version of this article for supplementary materials. Regularization Parameter that the BIC-type selector enables identification of the true model consistently, and the resulting estimator-type selector tends to overfit with positive probability. We further show that the AIC-type selector

  10. Multistep DBT and regular rational extensions of the isotonic oscillator Yves Grandati

    E-Print Network [OSTI]

    new towers of regular rational extensions of this potential which are strictly isospectral to it. We corresponding to unphysical (negative energy) eigenfunctions of the initial hamiltonian. They are obtained of negative energy states has been already proposed in early years of SUSY MQ development [25

  11. A conjecture of Biggs concerning the resistance of a distance-regular graph

    E-Print Network [OSTI]

    Markowsky, Greg

    2010-01-01T23:59:59.000Z

    Previously, Biggs has conjectured that the resistance between any two points on a distance-regular graph of valency greater than 2 is bounded by twice the resistance between adjacent points. We prove this conjecture, give the sharp constant for the inequality, and display the graphs for which the conjecture most nearly fails. Some necessary background material is included, as well as some consequences.

  12. All Regular Part-Time and Temporary Full-Time Employees

    E-Print Network [OSTI]

    contains important information and should be kept in a safe place known to you and your family. The Plan is underwritten by #12;Protecting Your Personal Information At Great-West Life, we recognize and respectAll Regular Part-Time and Temporary Full-Time Employees #12;Great-West Life is a leading Canadian

  13. VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION Sonja Glavaski1, Madalena Chaves2, Robert Day3,

    E-Print Network [OSTI]

    Chaves, Madalena

    VEHICLE NETWORKS: ACHIEVING REGULAR FORMATION Sonja Glavaski1, Madalena Chaves2, Robert Day3 will consider a network of vehicles ex- changing information among themselves with the intention of achieving, allowing for the randomly breaking of the communi- cation links among the vehicles. The network achieves

  14. Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann

    E-Print Network [OSTI]

    Hormann, Kai

    Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann Ulf Labsik Martin and final result of our hierarchical iso-surface extraction algorithm. Abstract In this paper we present a novel approach to iso-surface extrac- tion which is based on a multiresolution volume data

  15. Absorption of planar massless scalar waves by Bardeen regular black holes

    E-Print Network [OSTI]

    Caio F. B. Macedo; Luís C. B. Crispino

    2014-09-09T23:59:59.000Z

    Accretion of fields by black holes is a subject of great interest in physics. It is known that accretion plays a fundamental role in active galactic nuclei and in the evolution of black holes. Accretion of fundamental fields is often related to the study of absorption cross section. Basically all black holes for which absorption of fields has been studied so far present singularities. However, even within general relativity, it is possible to construct regular black holes: objects with event horizons but without singularities. Many physically motivated regular black hole solutions have been proposed in the past years, demanding the understanding of their absorption properties. We study the absorption of planar massless scalar waves by Bardeen regular black holes. We compare the absorption cross section of Bardeen and Reissner--Nordstr\\"om black holes, showing that the former always have a bigger absorption cross section for fixed values of the field frequency and of the normalized black hole charge. We also show that it is possible for a Bardeen black hole to have the same high-frequency absorption cross section of a Reissner--Nordstr\\"om black hole. Our results suggest that, in mid-to-high-frequency regimes, regular black holes can have compatible properties with black holes with singularities, as far as absorption is concerned.

  16. On a regularized family of models for homogeneous incompressible two-phase flows

    E-Print Network [OSTI]

    Ciprian G. Gal; T. Tachim Medjo

    2014-09-15T23:59:59.000Z

    We consider a general family of regularized models for incompressible two-phase flows based on the Allen-Cahn formulation in n-dimensional compact Riemannian manifolds for n=2,3. The system we consider consists of a regularized family of Navier-Stokes equations (including the Navier-Stokes-{\\alpha}-like model, the Leray-{\\alpha} model, the Modified Leray-{\\alpha} model, the Simplified Bardina model, the Navier-Stokes-Voight model and the Navier-Stokes model) for the fluid velocity suitably coupled with a convective Allen-Cahn equation for the (phase) order parameter. We give a unified analysis of the entire three-parameter family of two-phase models using only abstract mapping properties of the principal dissipation and smoothing operators, and then use assumptions about the specific form of the parametrizations, leading to specific models, only when necessary to obtain the sharpest results. We establish existence, stability and regularity results, and some results for singular perturbations, which as special cases include the inviscid limit of viscous models and the {\\alpha}->0 limit in {\\alpha}-models. Then, we also show the existence of a global attractor and exponential attractor for our general model, and then establish precise conditions under which each trajectory converges to a single equilibrium by means of a LS inequality. We also derive new results on the existence of global and exponential attractors for the regularized family of Navier-Stokes equations and magnetohydrodynamics models which improve and complement the results of Holst et. al. [J. Nonlinear Science 20, 2010, 523-567]. Finally, our analysis is applied to certain regularized Ericksen-Leslie (RSEL) models for the hydrodynamics of liquid crystals in n-dimensional compact Riemannian manifolds.

  17. Quantitative Monitoring for Enhanced Geothermal Systems Using Double-Difference Waveform Inversion with Spatially-Variant Total-Variation Regularization

    SciTech Connect (OSTI)

    Lin, Youzuo [Los Alamos National Laboratory; Huang, Lianjie [Los Alamos National Laboratory; Zhang, Zhigang [Los Alamos National Laboratory

    2011-01-01T23:59:59.000Z

    Double-difference waveform inversion is a promising tool for quantitative monitoring for enhanced geothermal systems (EGS). The method uses time-lapse seismic data to jointly inverts for reservoir changes. Due to the ill-posedness of waveform inversion, it is a great challenge to obtain reservoir changes accurately and efficiently, particularly when using timelapse seismic reflection data. To improve reconstruction, we develop a spatially-variant total-variation regularization scheme into double-difference waveform inversion to improve the inversion accuracy and robustness. The new regularization scheme employs different regularization parameters in different regions of the model to obtain an optimal regularization in each area. We compare the results obtained using a spatially-variant parameter with those obtained using a constant regularization parameter. Utilizing a spatially-variant regularization scheme, the target monitoring regions are well reconstructed and the image noise is significantly reduced outside the monitoring regions. Our numerical examples demonstrate that the spatially-variant total-variation regularization scheme provides the flexibility to regularize local regions based on the a priori spatial information without increasing computational costs and the computer memory requirement.

  18. Regular, Postdocs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently Approved JustificationBio-Inspired PowerRegionalRegistration

  19. Tensor-based formulation and nuclear norm regularization for multi-energy computed tomography

    E-Print Network [OSTI]

    Semerci, Oguz; Kilmer, Misha E; Miller, Eric L

    2013-01-01T23:59:59.000Z

    The development of energy selective, photon counting X-ray detectors allows for a wide range of new possibilities in the area of computed tomographic image formation. Under the assumption of perfect energy resolution, here we propose a tensor-based iterative algorithm that simultaneously reconstructs the X-ray attenuation distribution for each energy. We use a multi-linear image model rather than a more standard "stacked vector" representation in order to develop novel tensor-based regularizers. Specifically, we model the multi-spectral unknown as a 3-way tensor where the first two dimensions are space and the third dimension is energy. This approach allows for the design of tensor nuclear norm regularizers, which like its two dimensional counterpart, is a convex function of the multi-spectral unknown. The solution to the resulting convex optimization problem is obtained using an alternating direction method of multipliers (ADMM) approach. Simulation results shows that the generalized tensor nuclear norm can ...

  20. Decay of Correlations for the Hardcore Model on the $d$-regular Random Graph

    E-Print Network [OSTI]

    Nayantara Bhatnagar; Allan Sly; Prasad Tetali

    2014-05-23T23:59:59.000Z

    A key insight from statistical physics about spin systems on random graphs is the central role played by Gibbs measures on trees. We determine the local weak limit of the hardcore model on random regular graphs asymptotically until just below its condensation threshold, showing that it converges in probability locally in a strong sense to the free boundary condition Gibbs measure on the tree. As a consequence we show that the reconstruction threshold on the random graph, indicative of the onset of point to set spatial correlations, is equal to the reconstruction threshold on the $d$-regular tree for which we determine precise asymptotics. We expect that our methods will generalize to a wide range of spin systems for which the second moment method holds.

  1. 114 CHAPTER 2. REGULAR LANGUAGES 2.17 Right-Invariant Equivalence Relations on

    E-Print Network [OSTI]

    Gallier, Jean

    114 CHAPTER 2. REGULAR LANGUAGES 2.17 Right-Invariant Equivalence Relations on Let D = (Q, , , q0 an equivalent DFA Dr such that L(D) = L(Dr), where all the states of Dr are reachable. From now on, we assume-INVARIANT EQUIVALENCE RELATIONS ON 115 Recall that an equivalence relation on a set A is a relation which is reflexive

  2. Energy Distribution of a Regular Class of Exact Black Hole Solutions

    E-Print Network [OSTI]

    I-Ching Yang; Chi-Long Lin; I. Radinschi

    2009-11-10T23:59:59.000Z

    In this paper we present the expressions for the energy of a regular class of exact black hole solutions of Einstein's equations coupled with a nonlinear electrodynamics source. We calculate the energy distribution using the Einstein, Weinberg and M{\\o}ller prescriptions. We make a discussion of the results in function of two specific parameters, a sort of dipole and quadrupole moments of the nonlinear source $\\alpha$ and $\\beta$, and in addition a study of some particular cases is performed.

  3. Pumping Lemma for Regular Sets: Let D = (Q, , , q0, F) be a DFA.

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Pumping Lemma for Regular Sets: Let D = (Q, , , q0, F) be a DFA. Let n = |Q|. Let w L(D) s.t. |w| n. Then x, y, z s.t. the following all hold: xyz = w |xy| n |y| > 0, and k 0 (xykz L(D)) L30: Pumping Lemma CS250: Discrete Math for Computer Science #12;proof: Let w L(D), |w| n, w = w1, w2

  4. ISOPERIMETRIC CONSTANT OF A k-REGULAR GRAPH (A NOTE ON A THEOREM OF

    E-Print Network [OSTI]

    Smirnova-Nagnibeda, Tatiana

    ISOPERIMETRIC CONSTANT OF A k-REGULAR GRAPH (A NOTE ON A THEOREM OF BIGGS, MOHAR, AND SHAWE.2 in the paper [BMS] of Biggs, Mohar, and Shawe-Taylor we have instead of (1) and (2): i #21; 4(1 #26;) , #26 that #26; #20; q 1 i 2 k 2 . References BMS. N. Biggs, B. Mohar, J. Shawe-Taylor, The spectral radius of in

  5. Comment on ``A new efficient method for calculating perturbative energies using functions which are not square integrable'': regularization and justification

    E-Print Network [OSTI]

    C. K. Au; Chi-Keung Chow; Chong-Sun Chu

    1997-01-31T23:59:59.000Z

    The method recently proposed by Skala and Cizek for calculating perturbation energies in a strict sense is ambiguous because it is expressed as a ratio of two quantities which are separately divergent. Even though this ratio comes out finite and gives the correct perturbation energies, the calculational process must be regularized to be justified. We examine one possible method of regularization and show that the proposed method gives traditional quantum mechanics results.

  6. Extension of the Nambu-Jona-Lasinio model predictions at high densities and temperatures using an implicit regularization scheme

    SciTech Connect (OSTI)

    Farias, R. L. S. [Departamento de Fisica Teorica, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ 20559-900 (Brazil); Dallabona, G. [Departamento de Ciencias Exatas, Universidade Federal de Lavras, Cx. Postal 37, 37200-000, Lavras, MG (Brazil); Krein, G. [Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Pamplona 145, Sao Paulo, SP 01405-900 (Brazil); Battistel, O. A. [CBPF, Centro Brasileiro de Pesquisas Fisicas Rua Xavier Sigaud 150, 22290-180 Urca Rio de Janeiro, RJ (Brazil)

    2008-06-15T23:59:59.000Z

    Traditional cutoff regularization schemes of the Nambu-Jona-Lasinio model limit the applicability of the model to energy-momentum scales much below the value of the regularizing cutoff. In particular, the model cannot be used to study quark matter with Fermi momenta larger than the cutoff. In the present work, an extension of the model to high temperatures and densities recently proposed by Casalbuoni, Gatto, Nardulli, and Ruggieri is used in connection with an implicit regularization scheme. This is done by making use of scaling relations of the divergent one-loop integrals that relate these integrals at different energy-momentum scales. Fixing the pion decay constant at the chiral symmetry breaking scale in the vacuum, the scaling relations predict a running coupling constant that decreases as the regularization scale increases, implementing in a schematic way the property of asymptotic freedom of quantum chromodynamics. If the regularization scale is allowed to increase with density and temperature, the coupling will decrease with density and temperature, extending in this way the applicability of the model to high densities and temperatures. These results are obtained without specifying an explicit regularization. As an illustration of the formalism, numerical results are obtained for the finite density and finite temperature quark condensate and applied to the problem of color superconductivity at high quark densities and finite temperature.

  7. Regularization Method And Its Application In Problem Of Determination A Radial Distribution Of Spectral Lines

    SciTech Connect (OSTI)

    Vuceljic, M. J. [University of Montenegro, Faculty of Natural Science and Mathematic, Podgorica (Serbia)

    2007-04-23T23:59:59.000Z

    There are a lot of methods dealing with the problems how to get the local radial intensity from a measured lateral intensity of the spectral line. All of them need some a priori information and often a preliminary filtering of the signal. Thus, it is always a question about loosing the useful information of the signal. One of the methods for determination radial intensity is a Tikhonov regularization method. This method requires minimum a priori information such as: the intensity is a monotone positive function. To check applicability limitations of the method, some model functions have been introduced. Special attention was devoted to the model function with the fine structure.

  8. Distance-regular graphs of $q$-Racah type and the $q$-tetrahedron algebra

    E-Print Network [OSTI]

    Ito, Tatsuro

    2007-01-01T23:59:59.000Z

    In this paper we discuss a relationship between the following two algebras: (i) the subconstituent algebra $T$ of a distance-regular graph that has $q$-Racah type; (ii) the $q$-tetrahedron algebra $\\boxtimes_q$ which is a $q$-deformation of the three-point $sl_2$ loop algebra. Assuming that every irreducible $T$-module is thin, we display an algebra homomorphism from $\\boxtimes_q$ into $T$ and show that $T$ is generated by the image together with the center $Z(T)$.

  9. Random matrix theory for mixed regular-chaotic dynamics in the super-extensive regime

    SciTech Connect (OSTI)

    El-Hady, A. Abd [Department of Physics, King Khalid University, Abha (Saudi Arabia); Department of Physics, Zagazig University, Zagazig (Egypt); Abul-Magd, A. Y. [Department of Mathematics, Zagazig University, Zagazig (Egypt); Faculty of Engineering Sciences, Sinai University, El-Arish (Egypt)

    2011-10-27T23:59:59.000Z

    We apply Tsallis's q-indexed nonextensive entropy to formulate a random matrix theory (RMT), which may be suitable for systems with mixed regular-chaotic dynamics. We consider the super-extensive regime of q<1. We obtain analytical expressions for the level-spacing distributions, which are strictly valid for 2 X2 random-matrix ensembles, as usually done in the standard RMT. We compare the results with spacing distributions, numerically calculated for random matrix ensembles describing a harmonic oscillator perturbed by Gaussian orthogonal and unitary ensembles.

  10. Matter Conditions for Regular Black Holes in $\\mathbf{f(T)}$ Gravity

    E-Print Network [OSTI]

    Joshua Aftergood; Andrew DeBenedictis

    2014-11-04T23:59:59.000Z

    We study the conditions imposed on matter to produce a regular (non-singular) interior of a class of spherically symmetric black holes in the $f(T)$ extension of teleparallel gravity. The class of black holes studied is necessarily singular in general relativity. We derive a tetrad which is compatible with the black hole interior and utilize this tetrad in the gravitational equations of motion to study the black hole interior. It is shown that in the case where the gravitational Lagrangian is expandable in a power series $f(T)=T+\\underset{n\

  11. The Mimetic Finite Element Method and the Virtual Element Method for elliptic problems with arbitrary regularity.

    SciTech Connect (OSTI)

    Manzini, Gianmarco [Los Alamos National Laboratory

    2012-07-13T23:59:59.000Z

    We develop and analyze a new family of virtual element methods on unstructured polygonal meshes for the diffusion problem in primal form, that use arbitrarily regular discrete spaces V{sub h} {contained_in} C{sup {alpha}} {element_of} N. The degrees of freedom are (a) solution and derivative values of various degree at suitable nodes and (b) solution moments inside polygons. The convergence of the method is proven theoretically and an optimal error estimate is derived. The connection with the Mimetic Finite Difference method is also discussed. Numerical experiments confirm the convergence rate that is expected from the theory.

  12. Electrodeposition of nickel-iron alloys: Regular codeposition induced by the presence of ethylenediamine

    SciTech Connect (OSTI)

    St. Clair, J.; Harris, T. [Univ. of Tulsa, OK (United States)

    1996-10-01T23:59:59.000Z

    The nickel-iron alloy electrodeposition system typically exhibits a phenomenon known as {open_quotes}anomalous codeposition{close_quotes}, where the less noble metal (Fe) deposits preferentially to the more noble metal (Ni). The addition of ethylenediamine to the bath changes the electrodeposition toward {open_quotes}regular codeposition{close_quotes}, i.e. less Fe and more Ni am found in the deposit. The impact of various electrodeposition parameters, including the concentrations of ferrous ion and ethylenediamine and the pH of the bath, on this change in behavior will be presented.

  13. Interaction corrections to the minimal conductivity of graphene via dimensional regularization

    E-Print Network [OSTI]

    S. Teber; A. V. Kotikov

    2014-07-30T23:59:59.000Z

    We compute the two-loop interaction correction to the minimal conductivity of disorder-free intrinsic graphene with the help of dimensional regularization. The calculation is done in two different ways: via density-density and via current-current correlation functions. Upon properly renormalizing the perturbation theory, in both cases, we find that: $\\sigma = \\sigma_0\\,( 1 + \\al\\,(19-6\\pi)/12) \\approx \\sigma_0 \\,(1 + 0.01\\, \\al)$, where $\\al = e^2 / (4 \\pi \\hbar v)$ is the renormalized fine structure constant and $\\sigma_0 = e^2 / (4 \\hbar)$. Our results are consistent with experimental uncertainties and resolve a theoretical dispute.

  14. Regular polyhedra and bifurcations of symmetric equilibria of ordinary differential equations

    SciTech Connect (OSTI)

    Shnol', Emmanuil E [Institute of Mathematical Problems of Biology, Russian Academy of Sciences, Pushchino, Moscow region (Russian Federation)

    2000-08-31T23:59:59.000Z

    All local 1-parameter bifurcations of symmetric equilibrium states corresponding to triple eigenvalue 0 are considered. In each case the corresponding 'bifurcation group' the restriction of the full symmetry group of the differential equations to the centre manifold, is associated with symmetries of a regular (3-dimensional) polyhedron. It is shown that in all cases but one the bifurcation event is just a version of equilibrium branching. The proofs are based on the existence of functions (similar to Lyapunov functions) whose derivative by virtue of the equations has constant sign. These functions do not depend on the bifurcation parameter and are homogeneous of degree zero.

  15. Regular and chaotic dynamics of a chain of magnetic dipoles with moments of inertia

    SciTech Connect (OSTI)

    Shutyi, A. M. [Ulyanovsk State University (Russian Federation)], E-mail: shuty@mail.ru

    2009-05-15T23:59:59.000Z

    The nonlinear dynamic modes of a chain of coupled spherical bodies having dipole magnetic moments that are excited by a homogeneous ac magnetic field are studied using numerical analysis. Bifurcation diagrams are constructed and used to find conditions for the presence of several types of regular, chaotic, and quasi-periodic oscillations. The effect of the coupling of dipoles on the excited dynamics of the system is revealed. The specific features of the Poincare time sections are considered for the cases of synchronous chaos with antiphase synchronization and asynchronous chaos. The spectrum of Lyapunov exponents is calculated for the dynamic modes of an individual dipole.

  16. A hybrid inventory management system respondingto regular demand and surge demand

    SciTech Connect (OSTI)

    Mohammad S. Roni; Mingzhou Jin; Sandra D. Eksioglu

    2014-06-01T23:59:59.000Z

    This paper proposes a hybrid policy for a stochastic inventory system facing regular demand and surge demand. The combination of two different demand patterns can be observed in many areas, such as healthcare inventory and humanitarian supply chain management. The surge demand has a lower arrival rate but higher demand volume per arrival. The solution approach proposed in this paper incorporates the level crossing method and mixed integer programming technique to optimize the hybrid inventory policy with both regular orders and emergency orders. The level crossing method is applied to obtain the equilibrium distributions of inventory levels under a given policy. The model is further transformed into a mixed integer program to identify an optimal hybrid policy. A sensitivity analysis is conducted to investigate the impact of parameters on the optimal inventory policy and minimum cost. Numerical results clearly show the benefit of using the proposed hybrid inventory model. The model and solution approach could help healthcare providers or humanitarian logistics providers in managing their emergency supplies in responding to surge demands.

  17. On analytic solutions of wave equations in regular coordinate systems on Schwarzschild background

    E-Print Network [OSTI]

    Philipp, Dennis

    2015-01-01T23:59:59.000Z

    The propagation of (massless) scalar, electromagnetic and gravitational waves on fixed Schwarzschild background spacetime is described by the general time-dependent Regge-Wheeler equation. We transform this wave equation to usual Schwarzschild, Eddington-Finkelstein, Painleve-Gullstrand and Kruskal-Szekeres coordinates. In the first three cases, but not in the last one, it is possible to separate a harmonic time-dependence. Then the resulting radial equations belong to the class of confluent Heun equations, i.e., we can identify one irregular and two regular singularities. Using the generalized Riemann scheme we collect properties of all the singular points and construct analytic (local) solutions in terms of the standard confluent Heun function HeunC, Frobenius and asymptotic Thome series. We study the Eddington-Finkelstein case in detail and obtain a solution that is regular at the black hole horizon. This solution satisfies causal boundary conditions, i.e., it describes purely ingoing radiation at $r=2M$. ...

  18. Regularity and chaos in 0+ states of the interacting boson model using quantum measures

    E-Print Network [OSTI]

    S. Karampagia; Dennis Bonatsos; R. F. Casten

    2015-05-11T23:59:59.000Z

    Statistical measures of chaos have long been used in the study of chaotic dynamics in the framework of the interacting boson model. The use of large number of bosons renders additional studies of chaos possible, that can provide a direct comparison with similar classical studies of chaos. We intend to provide complete quantum chaotic dynamics at zero angular momentum in the vicinity of the arc of regularity and link the results of the study of chaos using statistical measures with those of the study of chaos using classical measures. Statistical measures of chaos are applied on the spectrum and the transition intensities of 0+ states in the framework of the interacting boson model. The energy dependence of chaos is provided for the first time using statistical measures of chaos. The position of the arc of regularity was also found to be stable in the limit of large boson numbers. The results of the study of chaos using statistical measures are consistent with previous studies using classical measures of chaos, as well as with studies using statistical measures of chaos, but for small number of bosons and states with angular momentum greater than 2.

  19. Regular and irregular patterns of self-localized excitation in arrays of coupled phase oscillators

    E-Print Network [OSTI]

    Matthias Wolfrum; Oleh Omel'chenko; Jan Sieber

    2015-01-30T23:59:59.000Z

    We study a system of phase oscillators with non-local coupling in a ring that supports self-organized patterns of coherence and incoherence, called chimera states. Introducing a global feedback loop, connecting the phase lag to the order parameter, we can observe chimera states also for systems with a small number of oscillators. Numerical simulations show a huge variety of regular and irregular patterns composed of localized phase slipping events of single oscillators. Using methods of classical finite dimensional chaos and bifurcation theory, we can identify the emergence of chaotic chimera states as a result of transitions to chaos via period doubling cascades, torus breakup, and intermittency. We can explain the observed phenomena by a mechanism of self-modulated excitability in a discrete excitable medium.

  20. Regular and irregular patterns of self-localized excitation in arrays of coupled phase oscillators

    E-Print Network [OSTI]

    Matthias Wolfrum; Oleh Omel'chenko; Jan Sieber

    2015-04-24T23:59:59.000Z

    We study a system of phase oscillators with nonlocal coupling in a ring that supports self-organized patterns of coherence and incoherence, called chimera states. Introducing a global feedback loop, connecting the phase lag to the order parameter, we can observe chimera states also for systems with a small number of oscillators. Numerical simulations show a huge variety of regular and irregular patterns composed of localized phase slipping events of single oscillators. Using methods of classical finite dimensional chaos and bifurcation theory, we can identify the emergence of chaotic chimera states as a result of transitions to chaos via period doubling cascades, torus breakup, and intermittency. We can explain the observed phenomena by a mechanism of self-modulated excitability in a discrete excitable medium.

  1. Bipartite Q-polynomial distance-regular graphs and uniform posets

    E-Print Network [OSTI]

    Miklavic, Stefko

    2011-01-01T23:59:59.000Z

    Let $\\G$ denote a bipartite distance-regular graph with vertex set $X$ and diameter $D \\ge 3$. Fix $x \\in X$ and let $L$ (resp. $R$) denote the corresponding lowering (resp. raising) matrix. We show that each $Q$-polynomial structure for $\\G$ yields a certain linear dependency among $RL^2$, $LRL$, $L^2R$, $L$. Define a partial order $\\le$ on $X$ as follows. For $y,z \\in X$ let $y \\le z$ whenever $\\partial(x,y)+\\partial(y,z)=\\partial(x,z)$, where $\\partial$ denotes path-length distance. We determine whether the above linear dependency gives this poset a uniform or strongly uniform structure. We show that except for one special case a uniform structure is attained, and except for three special cases a strongly uniform structure is attained.

  2. On the space and time evolution of regular or irregular human heart or brain signals

    E-Print Network [OSTI]

    Caglar Tuncay

    2011-06-05T23:59:59.000Z

    A coupled map is suggested to investigate various spatial or temporal designs in biology: Several cells (or tissues) in an organ are considered as connected to each other in terms of some molecular diffusions or electrical potential differences and so on. The biological systems (groups of cells) start from various initial conditions for spatial designs (or initial signals for temporal designs) and they evolve in time in terms of the mentioned interactions (connections) besides some individual feedings. The basic aim of the present contribution is to mimic various empirical data for the heart (in normal, quasi-stable, unstable and post operative physiological conditions) or brain (regular or irregular; for epilepsy) signals. The mentioned empirical data are borrowed from various literatures which are cited. The suggested model (to be used besides or instead of the artificial network models) involves simple mathematics and the related software is easy. The results may be considered as in good agreement with the mentioned real signals.

  3. Topological regularization and self-duality in four-dimensional anti-de Sitter gravity

    SciTech Connect (OSTI)

    Miskovic, Olivera; Olea, Rodrigo [Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Casilla 4059, Valparaiso (Chile); Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Casilla 4059, Valparaiso (Chile) and Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut Am Muehlenberg 1, 14476 Golm (Germany)

    2009-06-15T23:59:59.000Z

    It is shown that the addition of a topological invariant (Gauss-Bonnet term) to the anti-de Sitter gravity action in four dimensions recovers the standard regularization given by the holographic renormalization procedure. This crucial step makes possible the inclusion of an odd parity invariant (Pontryagin term) whose coupling is fixed by demanding an asymptotic (anti) self-dual condition on the Weyl tensor. This argument allows one to find the dual point of the theory where the holographic stress tensor is related to the boundary Cotton tensor as T{sub j}{sup i}={+-}(l{sup 2}/8{pi}G)C{sub j}{sup i}, which has been observed in recent literature in solitonic solutions and hydrodynamic models. A general procedure to generate the counterterm series for anti-de Sitter gravity in any even dimension from the corresponding Euler term is also briefly discussed.

  4. Stabilizing dual-energy X-ray computed tomography reconstructions using patch-based regularization

    E-Print Network [OSTI]

    Tracey, Brian H

    2014-01-01T23:59:59.000Z

    Recent years have seen growing interest in exploiting dual- and multi-energy measurements in computed tomography (CT) in order to characterize material properties as well as object shape. Material characterization is performed by decomposing the scene into constitutive basis functions, such as Compton scatter and photoelectric absorption functions. While well motivated physically, the joint recovery of the spatial distribution of photoelectric and Compton properties is severely complicated by the fact that the data are several orders of magnitude more sensitive to Compton scatter coefficients than to photoelectric absorption, so small errors in Compton estimates can create large artifacts in the photoelectric estimate. To address these issues, we propose a model-based iterative approach which uses patch-based regularization terms to stabilize inversion of photoelectric coefficients, and solve the resulting problem though use of computationally attractive Alternating Direction Method of Multipliers (ADMM) solu...

  5. Remarks on the regularity criteria of three-dimensional magnetohydrodynamics system in terms of two velocity field components

    SciTech Connect (OSTI)

    Yamazaki, Kazuo [Department of Mathematics, Oklahoma State University, 401 Mathematical Sciences, Stillwater, Oklahoma 74078 (United States)] [Department of Mathematics, Oklahoma State University, 401 Mathematical Sciences, Stillwater, Oklahoma 74078 (United States)

    2014-03-15T23:59:59.000Z

    We study the three-dimensional magnetohydrodynamics system and obtain its regularity criteria in terms of only two velocity vector field components eliminating the condition on the third component completely. The proof consists of a new decomposition of the four nonlinear terms of the system and estimating a component of the magnetic vector field in terms of the same component of the velocity vector field. This result may be seen as a component reduction result of many previous works [C. He and Z. Xin, “On the regularity of weak solutions to the magnetohydrodynamic equations,” J. Differ. Equ. 213(2), 234–254 (2005); Y. Zhou, “Remarks on regularities for the 3D MHD equations,” Discrete Contin. Dyn. Syst. 12(5), 881–886 (2005)].

  6. Contrary interfacial exciton dissociation at metal/organic interface in regular and reverse configuration organic solar cells

    SciTech Connect (OSTI)

    Wu, Bo; Wu, Zhenghui; Tam, Hoi Lam; Zhu, Furong, E-mail: frzhu@hkbu.edu.hk [Department of Physics, Institute of Advanced Materials, and Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, NT (Hong Kong)

    2014-09-08T23:59:59.000Z

    An opposite interfacial exciton dissociation behavior at the metal (Al)/organic cathode interface in regular and inverted organic solar cells (OSCs) was analyzed using transient photocurrent measurements. It is found that Al/organic contact in regular OSCs, made with the blend layer of poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b?]dithiophene-2,6-diyl] -[3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]-thiophenediyl

  7. Evaluation and approximate evaluation of the multivariate \\Lambda BernsteinB'ezier form on a regularly partitioned simplex

    E-Print Network [OSTI]

    Peters, Jörg

    on a regularly partitioned simplex by J¨org Peters Key words: Bernstein­B'ezier form, power form, evaluation repre­ sentation in the Bernstein­B'ezier form defined over an m­dimensional simplex. The two algorithms­dimensional simplex. This paper is concerned with the stable and efficient evaluation of total degree polynomials

  8. A Variational Approach to the Denoising of Images Based on Different Variants of the TV-Regularization

    SciTech Connect (OSTI)

    Bildhauer, Michael, E-mail: bibi@math.uni-sb.de; Fuchs, Martin, E-mail: fuchs@math.uni-sb.de [Saarland University, Department of Mathematics (Germany)

    2012-12-15T23:59:59.000Z

    We discuss several variants of the TV-regularization model used in image recovery. The proposed alternatives are either of nearly linear growth or even of linear growth, but with some weak ellipticity properties. The main feature of the paper is the investigation of the analytic properties of the corresponding solutions.

  9. Wavelet Applications in Signal and Image Processing IV, SPIE, Denver, 1996 1 Methods for Regular VLSI Implementations of Wavelet Filters

    E-Print Network [OSTI]

    Klappenecker, Andreas

    Wavelet Applications in Signal and Image Processing IV, SPIE, Denver, 1996 1 Methods for Regular VLSI Implementations of Wavelet Filters Andreas Klappenecker, Volker Baumgarte, Armin Nuckel implementation of wavelet lters. The direct form structure, the lattice form structure, and an algebraic

  10. Wavelet Applications in Signal and Image Processing IV, SPIE, Denver, 1996 1 Methods for Regular VLSI Implementations of Wavelet Filters

    E-Print Network [OSTI]

    Klappenecker, Andreas

    Wavelet Applications in Signal and Image Processing IV, SPIE, Denver, 1996 1 Methods for Regular VLSI Implementations of Wavelet Filters Andreas Klappenecker \\Lambda , Volker Baumgarte, Armin N implementation of wavelet filters. The direct form structure, the lattice form structure, and an algebraic

  11. ON THE REGULARIZATION OF SENSE AND SPACE-RIP IN PARALLEL MR IMAGING W. Scott Hoge1

    E-Print Network [OSTI]

    Banks, David

    ON THE REGULARIZATION OF SENSE AND SPACE-RIP IN PARALLEL MR IMAGING W. Scott Hoge1 , Dana H. Brooks in low coil sensitivity regions. 1. INTRODUCTION In pursuit of achieving reduced MR image acquisition2 , Bruno Madore1 , and Walid Kyriakos1 (1) Department of Radiology, Brigham and Women's Hospital

  12. Program 2015 Date Regular Fee Registration Dates EMC in Residence May 3-8 $780 Feb. 3 Apr. 10, 2015

    E-Print Network [OSTI]

    Ellis, Randy

    Program 2015 Date Regular Fee Registration Dates EMC in Residence May 3-8 $780 Feb. 3­ Apr. 10, 2015 2015 EMC Residence Program The Enrichment Mini-Course (EMC) Residential Program is an opportunity, and participate in extra- curricular activities. Why EMC at Queen's? Take top quality academic courses taught

  13. Program 2014 Date Regular Fee Registration Dates EMC in Residence May 4-9 $650 Feb 3-28, 2014

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    Program 2014 Date Regular Fee Registration Dates EMC in Residence May 4-9 $650 Feb 3-28, 2014 2014 EMC Residence Program The Enrichment Mini-Course (EMC) Residential Program is an opportunity and dinner each day in the cafeteria, and participate in extra-curricular activities. Why EMC at Queen

  14. Regularity criteria and uniform estimates for the Boussinesq system with the temperature-dependent viscosity and thermal diffusivity

    E-Print Network [OSTI]

    Jishan Fan; Fucai Li; Gen Nakamura

    2014-07-24T23:59:59.000Z

    In this paper we establish some regularity criteria for the 3D Boussinesq system with the temperature-dependent viscosity and thermal diffusivity. We also obtain some uniform estimates for the corresponding 2D case when the fluid viscosity coefficient is a positive constant.

  15. Clean Transportation Program | 919-515-3480 | www.cleantransportation.org I www.ncsc.ncsu.edu North Carolina State University, Campus Box 7401, Raleigh, NC 27695 | 919-515-3480 | www.ncsc.ncsu.edu | 3/16/12

    E-Print Network [OSTI]

    at different levels. E10 is a premium high- octane gasoline for cars and E85 (85% ethanol / 15% gasoline% ethanol and 90% gasoline, can be used in any gaso- line vehicle without modification. E85, however, offers, ethanol has a higher octane rating than regular unleaded gasoline, making E85 a premium fuel. Because

  16. Global regularity of wave maps III. Large energy from $\\R^{1+2}$ to hyperbolic spaces

    E-Print Network [OSTI]

    Tao, Terence

    2008-01-01T23:59:59.000Z

    We show that wave maps $\\phi$ from two-dimensional Minkowski space $\\R^{1+2}$ to hyperbolic spaces $\\H^m$ are globally smooth in time if the initial data is smooth, conditionally on some reasonable claims concerning the local theory of such wave maps, as well as the self-similar and travelling (or stationary solutions); we will address these claims in the sequels \\cite{tao:heatwave2}, \\cite{tao:heatwave3}, \\cite{tao:heatwave4} to this paper. Following recent work in critical dispersive equations, the strategy is to reduce matters to the study of an \\emph{almost periodic} maximal Cauchy development in the energy class. We then repeatedly analyse the stress-energy tensor of this development (as in \\cite{tao:forges}) to extract either a self-similar, travelling, or degenerate non-trivial energy class solution to the wave maps equation. We will then rule out such solutions in the sequels to this paper, establishing the desired global regularity result for wave maps.

  17. Energy distribution of a regular black hole solution in Einstein-nonlinear electrodynamics

    E-Print Network [OSTI]

    I. Radinschi; F. Rahaman; Th. Grammenos; A. Spanou; Sayeedul Islam

    2014-07-16T23:59:59.000Z

    In this work a study about the energy-momentum of a new four-dimensional spherically symmetric, static and charged, regular black hole solution developed in the context of general relativity coupled to nonlinear electrodynamics is presented. Asymptotically, this new black hole solution behaves as the Reissner-Nordstr\\"om solution only for the particular value {\\mu}=4, where {\\mu} is a positive integer parameter appearing in the mass function of the solution. The calculations are performed by use of the Einstein, Landau-Lifshitz, Weinberg and M{\\o}ller energy-momentum complexes. In all the aforesaid prescriptions, the expressions for the energy of the gravitating system considered depend on the mass M of the black hole, its charge q, a positive integer {\\alpha} and the radial coordinate r. In all these pseudotensorial prescriptions the momenta are found to vanish, while the Landau-Lifshitz and Weinberg prescriptions give the same result for the energy distribution. In addition, the limiting behavior of the energy for the cases r tends toward infinity, r=0 and q=0 is studied. The special case {\\mu}=4 and {\\alpha}=3 is also examined. We conclude that the Einstein and M{\\o}ller energy-momentum complexes can be considered as the most reliable tools for the study of the energy-momentum localization of a gravitating system.

  18. The Normalization of Perturbative String Amplitudes: Weyl Covariance and Zeta Function Regularization

    E-Print Network [OSTI]

    Shyamoli Chaudhuri

    2005-03-02T23:59:59.000Z

    This is a self-contained pedagogical review of Polchinski's 1986 analysis from first principles of the Polyakov path integral based on Hawking's zeta function regularization technique for scale-invariant computations in two-dimensional quantum gravity, an approach that can be adapted to any of the perturbative string theories. In particular, we point out the physical significance of preserving both Weyl and global diffeomorphism invariance while taking the low energy field theory limit of scattering amplitudes in an open and closed string theory, giving a brief discussion of some physics applications. We review the path integral computation of the pointlike off-shell closed bosonic string propagator due to Cohen, Moore, Nelson, and Polchinski. The extension of their methodology to the case of the macroscopic loop propagator in an embedding flat spacetime geometry has been given by Chaudhuri, Chen, and Novak. We examine the macroscopic loop amplitude from the perspective of both the target spacetime massive type II supergravity theory, and the boundary state formalism of the worldsheet conformal field theory, clarifying the precise evidence it provides for a Dirichlet (-2)brane, an identification made by Chaudhuri. The appendices contain extensive detail.

  19. Maximum approximate entropy and r threshold: A new approach for regularity changes detection

    E-Print Network [OSTI]

    Juan F. Restrepo; Gastón Schlotthauer; María E. Torres

    2014-05-29T23:59:59.000Z

    Approximate entropy (ApEn) has been widely used as an estimator of regularity in many scientific fields. It has proved to be a useful tool because of its ability to distinguish different system's dynamics when there is only available short-length noisy data. Incorrect parameter selection (embedding dimension $m$, threshold $r$ and data length $N$) and the presence of noise in the signal can undermine the ApEn discrimination capacity. In this work we show that $r_{max}$ ($ApEn(m,r_{max},N)=ApEn_{max}$) can also be used as a feature to discern between dynamics. Moreover, the combined use of $ApEn_{max}$ and $r_{max}$ allows a better discrimination capacity to be accomplished, even in the presence of noise. We conducted our studies using real physiological time series and simulated signals corresponding to both low- and high-dimensional systems. When $ApEn_{max}$ is incapable of discerning between different dynamics because of the noise presence, our results suggest that $r_{max}$ provides additional information that can be useful for classification purposes. Based on cross-validation tests, we conclude that, for short length noisy signals, the joint use of $ApEn_{max}$ and $r_{max}$ can significantly decrease the misclassification rate of a linear classifier in comparison with their isolated use.

  20. Use of Separator with Regular Granular Filling in Extraction Processes - 12209

    SciTech Connect (OSTI)

    Volk, Vladimir; Veselov, Sergey; Zherebtsov, Alexander [Joint Stock Company 'A.A. Bochvar High-Technology Scientific Research Institute of Inorganic Materials' (VNIINM), Rogova st., 5A (Russian Federation)

    2012-07-01T23:59:59.000Z

    The separator with a regular granular filling has been developed to be used for the operations of the removal of carbon-black impurities from the aqueous flow; the intra-cycle regeneration of back-extractants; and the concentrating back-extraction of plutonium in the extraction SNF reprocessing technology. The process conditions for those operations have been experimentally tested using this separator. Thus, the separator for operations of concentrating reextraction of plutonium and regeneration recycling extractant allows to: - derive plutonium from the organic stream into an extremely concentrated form, reducing the amount of liquid radioactive waste (raffinate, decantate) plutonium branches to a minimum; - controlling the processes of concentration of uranium and plutonium, get uranium-plutonium product with required concentration and the amount of metal with required ratio; - eliminate contamination of the emulsion flows; - simplify the purification of uranium from the extract plutonium; - test results showed that when working on a solution 'hydrazine-DTPA' in the separator it is achieved the extraction of plutonium re-extract - 82% TC - at 56-65%. With the transition to the reextraction by solution 'U (IV)-hydrazine', of plutonium into re-extract increases to 95%, technetium - up to 83%; - regenerate the extractant recycling minimizing the amount of liquid radioactive waste generated as a technology used as well as alternative 'salt-free' systems; - it is found that the regeneration of the extractant solution of soda and EDA in the separator at a load of 3.2 m{sup 3} / (m{sup 2}.h) it can be achieved almost complete phase separation. Residual carryover of 0,005-0,006% emulsion is on the verge of analytical detection. - It is shown that in the depth of separation phase a separation of the extractant regeneration of quality superior is more than 5-7 times to the extraction. (authors)

  1. Stability of the Minimizers of Least Squares with a Non-Convex Regularization. Part I: Local Behavior

    SciTech Connect (OSTI)

    Durand, S. [LAMFA UMR 6140, Universite de Picardie, 33 rue Saint-Leu, 90039 Amien Cedex (France)], E-mail: sdurand@cmla.ens-cachan.fr; Nikolova, M. [CMLA UMR 8536, ENS de Cachan, 61 av. du President Wilson, 94235 Cachan Cedex (France)], E-mail: nikolova@cmla.ens-cachan.fr

    2006-03-15T23:59:59.000Z

    Many estimation problems amount to minimizing a piecewise C{sup m} objective function, with m {>=} 2, composed of a quadratic data-fidelity term and a general regularization term. It is widely accepted that the minimizers obtained using non-convex and possibly non-smooth regularization terms are frequently good estimates. However, few facts are known on the ways to control properties of these minimizers. This work is dedicated to the stability of the minimizers of such objective functions with respect to variations of the data. It consists of two parts: first we consider all local minimizers, whereas in a second part we derive results on global minimizers. In this part we focus on data points such that every local minimizer is isolated and results from a C{sup m-1} local minimizer function, defined on some neighborhood. We demonstrate that all data points for which this fails form a set whose closure is negligible.

  2. Development of preference models for regular dissemination of informational and educational programming through cable television systems of Texas

    E-Print Network [OSTI]

    Quinn, Larry Arnold

    1973-01-01T23:59:59.000Z

    of formats on the market today. Different manufacturers' equipment is not compatible, and often even equipment manufactured by the same company is not always compatible (9: I). Results of this study will reveal to the Texas cable industry the kinds...DEVELOPMENT OF PREFERENCE MODELS FOR REGULAR DISSEMINATION OF INFORMATIONAL AND EDUCATIONAL PROGRAMMING THROUGH CABLE TELEVISION SYSTEMS OF TEXAS A Thesis by LARRY ARNOLD QUINN Submitted to the Graduate College of Texas A&M University...

  3. Separating the regular and irregular energy levels and their statistics in Hamiltonian system with mixed classical dynamics

    E-Print Network [OSTI]

    Baowen Li; Marko

    1995-02-01T23:59:59.000Z

    We look at the high-lying eigenstates (from the 10,001st to the 13,000th) in the Robnik billiard (defined as a quadratic conformal map of the unit disk) with the shape parameter $\\lambda=0.15$. All the 3,000 eigenstates have been numerically calculated and examined in the configuration space and in the phase space which - in comparison with the classical phase space - enabled a clear cut classification of energy levels into regular and irregular. This is the first successful separation of energy levels based on purely dynamical rather than special geometrical symmetry properties. We calculate the fractional measure of regular levels as $\\rho_1=0.365\\pm 0.01$ which is in remarkable agreement with the classical estimate $\\rho_1=0.360\\pm 0.001$. This finding confirms the Percival's (1973) classification scheme, the assumption in Berry-Robnik (1984) theory and the rigorous result by Lazutkin (1981,1991). The regular levels obey the Poissonian statistics quite well whereas the irregular sequence exhibits the fractional power law level repulsion and globally Brody-like statistics with $\\beta = 0.286\\pm0.001$. This is due to the strong localization of irregular eigenstates in the classically chaotic regions. Therefore in the entire spectrum we see that the Berry-Robnik regime is not yet fully established so that the level spacing distribution is correctly captured by the Berry-Robnik-Brody distribution (Prosen and Robnik 1994).

  4. Paskhevich A., Wenger P. et Chablat D., "Kinematic and stiffness analysis of the Orthoglide, a PKM with simple, regular workspace and homogeneous performances", IEEE International Conference On Robotics And Automation, Rome, Italie, Avril, 2007.

    E-Print Network [OSTI]

    Boyer, Edmond

    with simple, regular workspace and homogeneous performances", IEEE International Conference On Robotics, regular workspace and homogeneous performances Anatoly Pashkevich, Philippe WENGER, Damien CHABLAT Robotic of a prescribed cubic Cartesian workspace that is free of singularities and internal collision. The interesting

  5. The Pumping Lemma as a "game with the devil" Pumping Lemma: If L is a regular language then there is an integer m so that any string w in L of length

    E-Print Network [OSTI]

    Nielsen, Mark J.

    The Pumping Lemma as a "game with the devil" Pumping Lemma: If L is a regular language yeah? I say it is regular. Me: Let's settle this using the Pumping Lemma. If L was regular, the Pumping number to work, any string of length longer than 1000 has to behave as the Pumping Lemma says ­ so I get

  6. Cardiac C-arm computed tomography using a 3D + time ROI reconstruction method with spatial and temporal regularization

    SciTech Connect (OSTI)

    Mory, Cyril, E-mail: cyril.mory@philips.com [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, F-69621 Villeurbanne Cedex (France) [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, F-69621 Villeurbanne Cedex (France); Philips Research Medisys, 33 rue de Verdun, 92156 Suresnes (France); Auvray, Vincent; Zhang, Bo [Philips Research Medisys, 33 rue de Verdun, 92156 Suresnes (France)] [Philips Research Medisys, 33 rue de Verdun, 92156 Suresnes (France); Grass, Michael; Schäfer, Dirk [Philips Research, Röntgenstrasse 24–26, D-22335 Hamburg (Germany)] [Philips Research, Röntgenstrasse 24–26, D-22335 Hamburg (Germany); Chen, S. James; Carroll, John D. [Department of Medicine, Division of Cardiology, University of Colorado Denver, 12605 East 16th Avenue, Aurora, Colorado 80045 (United States)] [Department of Medicine, Division of Cardiology, University of Colorado Denver, 12605 East 16th Avenue, Aurora, Colorado 80045 (United States); Rit, Simon [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon (France) [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon (France); Université Lyon 1 (France); Centre Léon Bérard, 28 rue Laënnec, F-69373 Lyon (France); Peyrin, Françoise [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, F-69621 Villeurbanne Cedex (France) [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, F-69621 Villeurbanne Cedex (France); X-ray Imaging Group, European Synchrotron, Radiation Facility, BP 220, F-38043 Grenoble Cedex (France); Douek, Philippe; Boussel, Loïc [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon (France) [Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon (France); Université Lyon 1 (France); Hospices Civils de Lyon, 28 Avenue du Doyen Jean Lépine, 69500 Bron (France)

    2014-02-15T23:59:59.000Z

    Purpose: Reconstruction of the beating heart in 3D + time in the catheter laboratory using only the available C-arm system would improve diagnosis, guidance, device sizing, and outcome control for intracardiac interventions, e.g., electrophysiology, valvular disease treatment, structural or congenital heart disease. To obtain such a reconstruction, the patient's electrocardiogram (ECG) must be recorded during the acquisition and used in the reconstruction. In this paper, the authors present a 4D reconstruction method aiming to reconstruct the heart from a single sweep 10 s acquisition. Methods: The authors introduce the 4D RecOnstructiOn using Spatial and TEmporal Regularization (short 4D ROOSTER) method, which reconstructs all cardiac phases at once, as a 3D + time volume. The algorithm alternates between a reconstruction step based on conjugate gradient and four regularization steps: enforcing positivity, averaging along time outside a motion mask that contains the heart and vessels, 3D spatial total variation minimization, and 1D temporal total variation minimization. Results: 4D ROOSTER recovers the different temporal representations of a moving Shepp and Logan phantom, and outperforms both ECG-gated simultaneous algebraic reconstruction technique and prior image constrained compressed sensing on a clinical case. It generates 3D + time reconstructions with sharp edges which can be used, for example, to estimate the patient's left ventricular ejection fraction. Conclusions: 4D ROOSTER can be applied for human cardiac C-arm CT, and potentially in other dynamic tomography areas. It can easily be adapted to other problems as regularization is decoupled from projection and back projection.

  7. Combined iterative reconstruction and image-domain decomposition for dual energy CT using total-variation regularization

    SciTech Connect (OSTI)

    Dong, Xue; Niu, Tianye; Zhu, Lei, E-mail: leizhu@gatech.edu [Nuclear and Radiological Engineering and Medical Physics Programs, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)] [Nuclear and Radiological Engineering and Medical Physics Programs, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

    2014-05-15T23:59:59.000Z

    Purpose: Dual-energy CT (DECT) is being increasingly used for its capability of material decomposition and energy-selective imaging. A generic problem of DECT, however, is that the decomposition process is unstable in the sense that the relative magnitude of decomposed signals is reduced due to signal cancellation while the image noise is accumulating from the two CT images of independent scans. Direct image decomposition, therefore, leads to severe degradation of signal-to-noise ratio on the resultant images. Existing noise suppression techniques are typically implemented in DECT with the procedures of reconstruction and decomposition performed independently, which do not explore the statistical properties of decomposed images during the reconstruction for noise reduction. In this work, the authors propose an iterative approach that combines the reconstruction and the signal decomposition procedures to minimize the DECT image noise without noticeable loss of resolution. Methods: The proposed algorithm is formulated as an optimization problem, which balances the data fidelity and total variation of decomposed images in one framework, and the decomposition step is carried out iteratively together with reconstruction. The noise in the CT images from the proposed algorithm becomes well correlated even though the noise of the raw projections is independent on the two CT scans. Due to this feature, the proposed algorithm avoids noise accumulation during the decomposition process. The authors evaluate the method performance on noise suppression and spatial resolution using phantom studies and compare the algorithm with conventional denoising approaches as well as combined iterative reconstruction methods with different forms of regularization. Results: On the Catphan©600 phantom, the proposed method outperforms the existing denoising methods on preserving spatial resolution at the same level of noise suppression, i.e., a reduction of noise standard deviation by one order of magnitude. This improvement is mainly attributed to the high noise correlation in the CT images reconstructed by the proposed algorithm. Iterative reconstruction using different regularization, including quadratic orq-generalized Gaussian Markov random field regularization, achieves similar noise suppression from high noise correlation. However, the proposed TV regularization obtains a better edge preserving performance. Studies of electron density measurement also show that our method reduces the average estimation error from 9.5% to 7.1%. On the anthropomorphic head phantom, the proposed method suppresses the noise standard deviation of the decomposed images by a factor of ?14 without blurring the fine structures in the sinus area. Conclusions: The authors propose a practical method for DECT imaging reconstruction, which combines the image reconstruction and material decomposition into one optimization framework. Compared to the existing approaches, our method achieves a superior performance on DECT imaging with respect to decomposition accuracy, noise reduction, and spatial resolution.

  8. From statistics of regular tree-like graphs to distribution function and gyration radius of branched polymers

    E-Print Network [OSTI]

    Grosberg, Alexander Y

    2015-01-01T23:59:59.000Z

    We consider flexible branched polymer, with quenched branch structure, and show that its conformational entropy as a function of its gyration radius $R$, at large $R$, obeys, in the scaling sense, $\\Delta S \\sim R^2/(a^2L)$, with $a$ bond length (or Kuhn segment) and $L$ defined as an average spanning distance. We show that this estimate is valid up to at most the logarithmic correction for any tree. We do so by explicitly computing the largest eigenvalues of Kramers matrices for both regular and "sparse" 3-branched trees, uncovering on the way their peculiar mathematical properties.

  9. Interpolation of scattered temperature data measurements onto a worldwide regular grid using radial basis functions with applications to global warming

    SciTech Connect (OSTI)

    Kansa, E.J.; Axelrod, M.C.; Kercher, J.R.

    1994-05-01T23:59:59.000Z

    Our current research into the response of natural ecosystems to a hypothesized climatic change requires that we have estimates of various meteorological variables on a regularly spaced grid of points on the surface of the earth. Unfortunately, the bulk of the world`s meteorological measurement stations is located at airports that tend to be concentrated on the coastlines of the world or near populated areas. We can also see that the spatial density of the station locations is extremely non-uniform with the greatest density in the USA, followed by Western Europe. Furthermore, the density of airports is rather sparse in desert regions such as the Sahara, the Arabian, Gobi, and Australian deserts; likewise the density is quite sparse in cold regions such as Antarctica Northern Canada, and interior northern Russia. The Amazon Basin in Brazil has few airports. The frequency of airports is obviously related to the population centers and the degree of industrial development of the country. We address the following problem here. Given values of meteorological variables, such as maximum monthly temperature, measured at the more than 5,500 airport stations, interpolate these values onto a regular grid of terrestrial points spaced by one degree in both latitude and longitude. This is known as the scattered data problem.

  10. Stability of the Minimizers of Least Squares with a Non-Convex Regularization. Part II: Global Behavior

    SciTech Connect (OSTI)

    Durand, S. [LAMFA UMR 6140, Universite de Picardie, 33 rue Saint-Leu, 90039 Amien Cedex (France)], E-mail: sdurand@cmla.ens-cachan.fr; Nikolova, M. [CMLA UMR 8536, ENS de Cachan, 61 av. du President Wilson, 94235 Cachan Cedex (France)], E-mail: nikolova@cmla.ens-cachan.fr

    2006-05-15T23:59:59.000Z

    We address estimation problems where the sought-after solution is definedas the minimizer of an objective function composed of a quadratic data-fidelity term and a regularization term. We especially focus on non-convex and possibly non-smooth regularization terms because of their ability to yield good estimates.This work is dedicated to the stability of the minimizers of such piecewise C{sup m}, with m {>=} 2, non-convex objective functions. It is composed of two parts. In the previous part of this work we considered general local minimizers. In this part we derive results on global minimizers. We show that the data domain contains an open, dense subset such that for every data point therein, the objective function has a finite number of local minimizers, and a unique global minimizer. It gives rise to a global minimizer function which is C{sup m-1} everywhere on an open and dense subset of the data domain.

  11. Rising College Premiums in Mexico: How Important Is Trade?

    E-Print Network [OSTI]

    Mehta, Aashish; Acuna, Belinda

    2010-01-01T23:59:59.000Z

    Domestic reform, trade and investment liberalisation, …G.H. , Harrison, A. , 1999. Trade Liberalization and WageG. , 1999. Who gains from trade reform? Some remaining

  12. Assessment of Combined Heat and Power Premium Power Applications...

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

    interruption intolerant commercial facilities in California.Through a series of three case studies, key trade-offs are analyzed with regard to the provision of black-out ride...

  13. Energy Conservation Tax Credits- Small Premium Projects (Corporate)

    Broader source: Energy.gov [DOE]

    The Oregon Department of Energy periodically releases Opportunity Announcements for tax credits for energy conservation projects. Energy conservation projects include projects with investments for...

  14. How Did Health Care Reform in Massachusetts Impact Insurance Premiums?

    E-Print Network [OSTI]

    Graves, John A.

    It is widely recognized that the 2006 Massachusetts health reforms served as a blueprint for national reform under the 2010 Affordable Care Act (ACA). As such, there is interest in using the Massachusetts experience to ...

  15. Regulatory and Commercial Barriers to Introduction of Renewable Super Premium

    Broader source: Energy.gov [DOE]

    Breakout Session 2: Frontiers and Horizons Session 2–B: End Use and Fuel Certification Robert McCormick, Principal Engineer in Fuels Performance, National Renewable Energy Laboratory

  16. argonne premium coals: Topics by E-print Network

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

    composted manure LAPC, high ash raw manure HARM, and high ash partially composted manure HAPC) as well as blends of each biomass with Texas lignite coal (TXL). Activation...

  17. argonne premium coal: Topics by E-print Network

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

    composted manure LAPC, high ash raw manure HARM, and high ash partially composted manure HAPC) as well as blends of each biomass with Texas lignite coal (TXL). Activation...

  18. 1/10 Rev. 8/09 HMO PREMIUM

    E-Print Network [OSTI]

    Fraden, Seth

    (Services provided at a designated facility) Covered in full Substance Abuse Outpatient Care (Alcohol organization) plan, you enjoy quality coverage for your health care needs, while your out-of-pocket costs are kept to a minimum. In general, preventive and medically necessary health care services and supplies

  19. MA-1/11 Rev. 8/10 HMO PREMIUM

    E-Print Network [OSTI]

    Fraden, Seth

    Substance Abuse Outpatient Care (Alcohol and drug treatment, detoxification) $15 per visit Inpatient Care organization) plan, you enjoy quality coverage for your health care needs. In general, preventive and medically necessary health care services and supplies are covered when they are provided or authorized by your network

  20. 1/10 Rev. 8/09 PPO PREMIUM

    E-Print Network [OSTI]

    Fraden, Seth

    at a participating retail pharmacy For up to a 90-day supply through our mail order service Tier 1 $10 $20 Tier 2 $20 Scans, and Nuclear Cardiology) Covered in full Plan covers 80% Diagnostic Lab Tests Covered in full Plan

  1. Energy Conservation Tax Credits- Small Premium Projects (Personal)

    Broader source: Energy.gov [DOE]

    The Oregon Department of Energy periodically releases Opportunity Announcements for tax credits for energy conservation projects. Energy conservation projects include projects with investments for...

  2. Premium Analyse Company Product Overview | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR - T enAmountCammie CroftPRELIMINARY

  3. Premium Efficiency Motor Selection and Application Guide - A Handbook for

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015 < prev next > Sun Mon2015 | DepartmentNEA-2011-02Industry |

  4. Premium Power Corporation Smart Grid Demonstration Project | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska:Precourt Institute for Energy Efficiency Jump to:Open

  5. Premium Efficiency Motor Selection and Application Guide - A Handbook for

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in235-1DepartmentPreheatedDepartmentofEA-97-12 |—

  6. Assessment of Combined Heat and Power Premium Power Applications in

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISOSource Heat 1PowerofSystems |AsApril 1,

  7. When to Purchase Premium Efficiency Motors | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: SinceDevelopment | Department ofPartnerships ToolkitWaste Heatv3) |WelcomeIsWhatWhat'sShouldto

  8. Avoid Nuisance Tripping with Premium Efficiency Motors | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISOSource1-01 Audit LetterYearAvi Shultz Avi ShultzEnergy

  9. Spontaneous formation of highly regular superlattice structure in InGaN epilayers grown by molecular beam epitaxy

    SciTech Connect (OSTI)

    Wu, Z. H. [Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 (China); Graduate School of Engineering, Akasaki Research Center, Nagoya University, Chikusa-ku, Nagoya 464-8603 (Japan); Kawai, Y.; Honda, Y.; Yamaguchi, M.; Amano, H. [Graduate School of Engineering, Akasaki Research Center, Nagoya University, Chikusa-ku, Nagoya 464-8603 (Japan); Fang, Y.-Y.; Chen, C. Q. [Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 (China); Kondo, H.; Hori, M. [Graduate School of Engineering, Plasma Nanotechnology Research Center, Nagoya University, Chikusa-ku, Nagoya 464-8603 (Japan)

    2011-04-04T23:59:59.000Z

    In this letter, we have investigated the structural properties of thick InGaN layers grown on GaN by plasma-assisted molecular beam epitaxy, using two growth rates of 1.0 and 3.6 A/s. A highly regular superlattice (SL) structure is found to be spontaneously formed in the film grown at 3.6 A/s but not in the film grown at 1.0 A/s. The faster grown film also exhibits superior structural quality, which could be due to the surface roughness suppression caused by kinetic limitation, and the inhibition of the Frank-Read dislocation generation mechanism within the spontaneously formed SL structure.

  10. Zinc Oxide Modified with Benzylphosphonic Acids as Transparent Electrodes in Regular and Inverted Organic Solar Cell Structures

    E-Print Network [OSTI]

    Ilja Lange; Sina Reiter; Juliane Kniepert; Fortunato Piersimoni; Michael Paetzel; Jana Hildebrandt; Thomas Brenner; Stefan Hecht; Dieter Neher

    2015-02-05T23:59:59.000Z

    An approach is presented to modify the WF of solution-processed sol-gel derived ZnOover an exceptionally wide range of more than 2.3 eV. This approach relies on the formation of dense and homogeneous self-assembled monolayers based on phosphonic acids with different dipole moments. This allows us to apply ZnO as charge selective bottom electrodes in either regular or inverted solar cell structures, using P3HT:PCBM as the active layer. These devices compete with or even exceed the performance of the reference cell on ITO/PEDOT:PSS. Our finding challenges the current view that bottom electrodes in inverted solar cells need to be electron-blocking for good device performance.

  11. Regular and irregular dynamics of Dirac-Weyl wavepackets in a mesoscopic quantum dot at the edge of topological insulator

    E-Print Network [OSTI]

    D. V. Khomitsky; A. A. Chubanov; A. A. Konakov

    2015-01-06T23:59:59.000Z

    The dynamics of Dirac-Weyl spin-polarized wavepackets driven by periodic electric field is considered for the electrons in a mesoscopic quantum dot formed at the edge of two-dimensional HgTe/CdTe topological insulator with Dirac-Weyl massless energy spectra, where the motion of carriers is less sensitive to disorder and impurity potentials. It is found that the interplay of strongly coupled spin and charge degrees of freedom creates the regimes of both regular and irregular dynamics with certain universal properties manifested both in the clean limit and in the presence of the moderate disorder. The disorder influence is predicted to enhance the in-plane spin relaxation, leading to possibility of establishing novel types of driven evolution in nanostructures formed in the topological insulators.

  12. Long-term evolution of techno-social networks: Statistical regularities, predictability and stability of social behaviors

    E-Print Network [OSTI]

    Godoy-Lorite, Antonia; Sales-Pardo, Marta

    2015-01-01T23:59:59.000Z

    In social networks, individuals constantly drop ties and replace them by new ones in a highly unpredictable fashion. This highly dynamical nature of social ties has important implications for processes such as the spread of information or of epidemics. Several studies have demonstrated the influence of a number of factors on the intricate microscopic process of tie replacement, but the macroscopic long-term effects of such changes remain largely unexplored. Here we investigate whether, despite the inherent randomness at the microscopic level, there are macroscopic statistical regularities in the long-term evolution of social networks. In particular, we analyze the email network of a large organization with over 1,000 individuals throughout four consecutive years. We find that, although the evolution of individual ties is highly unpredictable, the macro-evolution of social communication networks follows well-defined statistical laws, characterized by exponentially decaying log-variations of the weight of socia...

  13. Statistical models and regularization strategies in statistical image reconstruction of low-dose X-ray computed tomography: a survey

    E-Print Network [OSTI]

    Zhang, Hao; Ma, Jianhua; Lu, Hongbing; Liang, Zhengrong

    2014-01-01T23:59:59.000Z

    Statistical image reconstruction (SIR) methods have shown potential to substantially improve the image quality of low-dose X-ray computed tomography (CT) as compared to the conventional filtered back-projection (FBP) method for various clinical tasks. According to the maximum a posterior (MAP) estimation, the SIR methods can be typically formulated by an objective function consisting of two terms: (1) data-fidelity (or equivalently, data-fitting or data-mismatch) term modeling the statistics of projection measurements, and (2) regularization (or equivalently, prior or penalty) term reflecting prior knowledge or expectation on the characteristics of the image to be reconstructed. Existing SIR methods for low-dose CT can be divided into two groups: (1) those that use calibrated transmitted photon counts (before log-transform) with penalized maximum likelihood (pML) criterion, and (2) those that use calibrated line-integrals (after log-transform) with penalized weighted least-squares (PWLS) criterion. Accurate s...

  14. Long time existence of regular solutions to 3d Navier-Stokes equations coupled with the heat convection

    E-Print Network [OSTI]

    Jolanta Socala; Wojciech M. Zajaczkowski

    2011-03-21T23:59:59.000Z

    We prove long time existence of regular solutions to the Navier-Stokes equations coupled with the heat equation. We consider the system in non-axially symmetric cylinder with the slip boundary conditions for the Navier-Stokes equations and the Neumann condition for the heat equation. The long time existence is possible because we assumed that derivatives with respect to the variable along the axis of the cylinder of the initial velocity, initial temperature and the external force in $L_2$ norms are sufficiently small. We proved the existence of such solutions that velocity and temperature belong to $W_\\sigma^{2,1}(\\Omega\\times(0,T))$, where $\\sigma>{5\\over3}$. The existence is proved by the Leray-Schauder fixed point theorem.

  15. Long time existence of regular solutions to 3d Navier-Stokes equations coupled with the heat convection

    E-Print Network [OSTI]

    Socala, Jolanta

    2011-01-01T23:59:59.000Z

    We prove long time existence of regular solutions to the Navier-Stokes equations coupled with the heat equation. We consider the system in non-axially symmetric cylinder with the slip boundary conditions for the Navier-Stokes equations and the Neumann condition for the heat equation. The long time existence is possible because we assumed that derivatives with respect to the variable along the axis of the cylinder of the initial velocity, initial temperature and the external force in $L_2$ norms are sufficiently small. We proved the existence of such solutions that velocity and temperature belong to $W_\\sigma^{2,1}(\\Omega\\times(0,T))$, where $\\sigma>{5\\over3}$. The existence is proved by the Leray-Schauder fixed point theorem.

  16. SUPPLEMENT TO THE PAPER: Separating the regular and irregular energy levels and their statistics in Hamiltonian system with mixed classical dynamics

    E-Print Network [OSTI]

    Baowen Li; Marko Robnik

    1995-02-01T23:59:59.000Z

    As a technical supplement to the above mentioned paper we present 192 consecutive eigenstates for the Robnik billiard with the shape parameter $\\lambda=0.15$ from 10,001st to 10,192nd, by showing the plots in the configuration space and in the phase space. The latter is smoothed projection of the Wigner function onto the surface of section. By comparison with the classical SOS plots we thus examine all eigenstates and classify them in regular and irregular: There are 70 regular states and 122 irregular states, thus giving the estimate of the relative measure of the regular component $\\rho_1=0.365$, which is in excellent agreement with the classical value $\\rho_1=0.360$ calculated and reported by Prosen and Robnik (1993).

  17. Combining farmers' decision rules and landscape stochastic regularities for landscape Nomie Schaller, El Ghali Lazrak, Philippe Martin, Jean-Franois Mari, Christine Aubry, Marc

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    7662307755/ hal-00656407,version1-4Jan2012 Author manuscript, published in "Landscape Ecology 27, 3 (2012 and the identification of landscape stochastic regularities through data- mining. We applied this approach to the Niort to the scale of ecological processes and therefore contributes to landscape ecology. Key words hal-00656407

  18. THE FOREST & RANGELAND STEWARDSHIP INDEPENDENT STUDY POLICY Independent study is a type of learning that supplements regular, supervised classroom instruction by

    E-Print Network [OSTI]

    EH 4/12 THE FOREST & RANGELAND STEWARDSHIP INDEPENDENT STUDY POLICY Independent study is a type of learning that supplements regular, supervised classroom instruction by permitting the student to carry such learning even further, working independently under necessary and sufficient guidance of a supervising

  19. Contribution of matter fields to the Gell-Mann-Low function for N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives

    E-Print Network [OSTI]

    K. V. Stepanyantz

    2006-08-06T23:59:59.000Z

    Contribution of matter fields to the Gell-Mann-Low function for N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives, is obtained using Schwinger-Dyson equations and Slavnov-Tailor identities. A possible deviation of the result from the corresponding contribution in the exact Novikov, Shifman, Vainshtein and Zakharov $\\beta$-function is discussed.

  20. Two-loop Gell-Mann-Low function of N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives

    E-Print Network [OSTI]

    A. B. Pimenov; K. V. Stepanyantz

    2007-07-26T23:59:59.000Z

    Two-loop Gell-Mann-Low function is calculated for N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives. The integrals, which define it, are shown to be reduced to total derivatives and can be easily calculated analytically.

  1. UCF-4.0294 Use of University Facilities; General Requirements. (1) University facilities are reserved and used primarily for the official and regular

    E-Print Network [OSTI]

    Wu, Shin-Tson

    and approved by a University building code official or safety officer. A sketch drawing of the display are reserved and used primarily for the official and regular conduct of the University's business interference and disruption, University officials will look to the standards of University Regulation UCF- 4

  2. J. Phys. B : Atom. Molec. Phys., Vol. 7 . No. 14, 1974. Printed in Great Britain. 0 1974 Numerical identification of regular and irregular spectra

    E-Print Network [OSTI]

    and irregular spectra. 1. Introduction The quantal energy spectrum of a nonintegrable Hamiltonian is expected to exhibit two types of behaviour. At low energies the energy levels belong to a regular spectrum, and have, where N is the number of degrees of freedom. At higher energies it is predicted that energy levels exist

  3. hal-00168179,version1-24Aug2007 W2001-255 REGULAR PAPER ACCEPTED TO IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION 1 Architecture Optimization of

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The design optimization is conducted on the basis of a prescribed Cartesian workspace with prescribedhal-00168179,version1-24Aug2007 W2001-255 REGULAR PAPER ACCEPTED TO IEEE TRANSACTIONS ON ROBOTICS the architecture optimization of a 3-DOF translational parallel mechanism designed for ma- chining applications

  4. 1100 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 51, NO. 6, JUNE 2004 SiGe HMODFET "KAIST" Micropower Model and

    E-Print Network [OSTI]

    Papavassiliou, Christos

    1100 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 51, NO. 6, JUNE 2004 SiGe of a novel SiGe n-HMODFET device operating at micropower levels and extracted small-signal model parameters in SiGe technology, and a comparison of modeled versus measured data is included. Index Terms

  5. SU-E-I-93: Improved Imaging Quality for Multislice Helical CT Via Sparsity Regularized Iterative Image Reconstruction Method Based On Tensor Framelet

    SciTech Connect (OSTI)

    Nam, H [Ewha Womans University, Seoul, Seoul (Korea, Republic of); Guo, M [Shanghai JiaoTong University, Shanghai, Shanghai (China); Lee, K [Stanford University, Stanford, CA (United States); Li, R [Stanford University, Palo Alto, CA (United States); Xing, L [Stanford UniversitySchool of Medicine, Stanford, CA (United States); Gao, H [Shanghai Jiao Tong University, Shanghai, Shanghai (China)

    2014-06-01T23:59:59.000Z

    Purpose: Inspired by compressive sensing, sparsity regularized iterative reconstruction method has been extensively studied. However, its utility pertinent to multislice helical 4D CT for radiotherapy with respect to imaging quality, dose, and time has not been thoroughly addressed. As the beginning of such an investigation, this work carries out the initial comparison of reconstructed imaging quality between sparsity regularized iterative method and analytic method through static phantom studies using a state-of-art 128-channel multi-slice Siemens helical CT scanner. Methods: In our iterative method, tensor framelet (TF) is chosen as the regularization method for its superior performance from total variation regularization in terms of reduced piecewise-constant artifacts and improved imaging quality that has been demonstrated in our prior work. On the other hand, X-ray transforms and its adjoints are computed on-the-fly through GPU implementation using our previous developed fast parallel algorithms with O(1) complexity per computing thread. For comparison, both FDK (approximate analytic method) and Katsevich algorithm (exact analytic method) are used for multislice helical CT image reconstruction. Results: The phantom experimental data with different imaging doses were acquired using a state-of-art 128-channel multi-slice Siemens helical CT scanner. The reconstructed image quality was compared between TF-based iterative method, FDK and Katsevich algorithm with the quantitative analysis for characterizing signal-to-noise ratio, image contrast, and spatial resolution of high-contrast and low-contrast objects. Conclusion: The experimental results suggest that our tensor framelet regularized iterative reconstruction algorithm improves the helical CT imaging quality from FDK and Katsevich algorithm for static experimental phantom studies that have been performed.

  6. Simple, explicitly time-dependent and regular solutions of the linearized vacuum Einstein equations on a null cone

    E-Print Network [OSTI]

    Thomas Mädler

    2013-03-27T23:59:59.000Z

    Perturbations of the linearized vacuum Einstein equations on a null cone in the Bondi-Sachs formulation of General Relativity can be derived from a single master function with spin weight two, which is related to the Weyl scalar \\Psi_0, and which is determined by a simple wave equation. Utilizing a standard spin representation of the tensors on a sphere and two different approaches to solve the master equation, we are able to determine two simple and explicitly time-dependent solutions. Both solutions, of which one is asymptotically flat, comply with the regularity conditions at the vertex of the null cone. For the asymptotically flat solution we calculate the corresponding linearized perturbations, describing all multipoles of spin-2 waves that propagate on a Minkowskian background spacetime. We also analyze the asymptotic behavior of this solution at null infinity using a Penrose compactification, and calculate the Weyl scalar, \\Psi_4. Because of its simplicity, the asymptotically flat solution presented here is ideally suited for testbed calculations in the Bondi-Sachs formulation of numerical relativity. It may be considered as a sibling of the well-known Teukolsky-Rinne solutions, on spacelike hypersurfaces, for a metric adapted to null hypersurfaces.

  7. Separable nonlinear programming

    E-Print Network [OSTI]

    Bunton, Wiley Ray

    1963-01-01T23:59:59.000Z

    . . . An Example . . Development of the Simplex Algorithm Definition of Nonlinear Programming . Survey of Nonlinear Methods. . . . . . II. MILLER'S METHOD 10 The Algorithm. An Example . . Termination and Optimality. . . . . . . . . . . Modeling Devices... oils. In order to maximize daily profits. how much of each motor fuel should be made and how should the raw stocks be blended? Let: motor fuel A = premium gasoline motor fuel 8 = regular gasoline and let subscripts p and r refer to premium...

  8. A regularized simplex method

    E-Print Network [OSTI]

    2013-02-25T23:59:59.000Z

    Abstract. In case of a special problem class, the simplex method can be implemented as a ... of the dual problem, in case a special simplex pricing rule is used.

  9. Exact regularized point particle method for multi-phase flows in the two-way coupling regime

    E-Print Network [OSTI]

    P. Gualtieri; F. Picano; G. Sardina; C. M. Casciola

    2014-05-27T23:59:59.000Z

    Particulate flows have been largely studied under the simplifying assumptions of one-way coupling regime where the disperse phase do not react-back on the carrier fluid. In the context of turbulent flows, many non trivial phenomena such as small scales particles clustering or preferential spatial accumulation have been explained and understood. A more complete view of multiphase flows can be gained calling into play two-way coupling effects, i.e. by accounting for the inter-phase momentum exchange between the carrier and the suspended phase, certainly relevant at increasing mass loading. In such regime, partially investigated in the past by the so-called Particle In Cell (PIC) method, much is still to be learned about the dynamics of the disperse phase and the ensuing alteration of the carrier flow. In this paper we present a new methodology rigorously designed to capture the inter-phase momentum exchange for particles smaller than the smallest hydrodynamical scale, e.g. the Kolmogorov scale in a turbulent flow. In fact, the momentum coupling mechanism exploits the unsteady Stokes flow around a small rigid sphere where the transient disturbance produced by each particle is evaluated in a closed form. The particles are described as lumped, point masses which would lead to the appearance of singularities. A rigorous regularization procedure is conceived to extract the physically relevant interactions between particles and fluid which avoids any "ah hoc" assumption. The approach is suited for high efficiency implementation on massively parallel machines since the transient disturbance produced by the particles is strongly localized in space around the actual particle position. As will be shown, hundred thousands particles can therefore be handled at an affordable computational cost as demonstrated by a preliminary application to a particle laden turbulent shear flow.

  10. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 57, NO. 1, JANUARY 2010 53 A SiGe BiCMOS Eight-Channel Multidithering

    E-Print Network [OSTI]

    Cauwenberghs, Gert

    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 57, NO. 1, JANUARY 2010 53 A SiGe--A SiGe BiCMOS mixed-signal adaptive con- troller-on-chip is presented that implements gradient descent in the 100­200-MHz frequency range. The chip measures 3 mm 3 mm in 0.5- m SiGe and consumes 110 mW at 3.3-V

  11. VOLUME 87, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 13 AUGUST 2001 Regular Wave Propagation Out of Noise in Chemical Active Media

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    , the intrinsic spatiotemporal regularities of any such wave propagation phenomena. Here, contrarily, we provideVOLUME 87, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 13 AUGUST 2001 Regular Wave Propagation Out of Noise in Chemical Active Media S. Alonso,1,2,* I. Sendiña-Nadal,3 V. Pérez-Muñuzuri,3 J. M

  12. The NSVZ beta-function and the Schwinger-Dyson equations for N=1 SQED with N_f flavors, regularized by higher derivatives

    E-Print Network [OSTI]

    K. V. Stepanyantz

    2014-06-08T23:59:59.000Z

    The effective diagram technique based on the Schwinger-Dyson equations is constructed for N=1 SQED with N_f flavors, regularized by higher derivatives. Using these effective diagrams, it is possible to derive the exact NSVZ relation between the beta-function and the anomalous dimension of the matter superfields exactly in all loops, if the renormalization group functions are defined in terms of the bare coupling constant. In particular, we verify that all integrals which give the beta-function defined in terms of the bare coupling constant are integrals of double total derivatives and prove some identities relating Green functions.

  13. Asymptotic expansions of the regular solutions to the 3D Navier-Stokes equations and applications to the analysis of the helicity 

    E-Print Network [OSTI]

    Hoang, Luan Thach

    2005-08-29T23:59:59.000Z

    dx ?t = ?2n0?1; where n0?1 is an eigenvalue of the above operator (??). This dissertation is organized as follows. In Chapter II we recall the functional setting of the Navier{Stokes equations and some known results about their regular solutions... = jkj2 for some k 2 Z3 n f0g: Note that ?1 = 1 = je1j2 and hence the additive semigroup generated by these eigenvalues coincides with the set N = f1;2;3;:::g of all natural numbers. For n 2 N we denote by Rn the orthogonal projection of H onto...

  14. Simulation of Canopy CO2/H2O Fluxes for a Rubber (Hevea Brasiliensis) Plantation in Central Cambodia: The Effect of the Regular Spacing of Planted Trees

    SciTech Connect (OSTI)

    Kumagai, Tomo'omi; Mudd, Ryan; Miyazawa, Yoshiyuki; Liu, Wen; Giambelluca, Thomas; Kobayashi, N.; Lim, Tiva Khan; Jomura, Mayuko; Matsumoto, Kazuho; Huang, Maoyi; Chen, Qi; Ziegler, Alan; Yin, Song

    2013-09-10T23:59:59.000Z

    We developed a soil-vegetation-atmosphere transfer (SVAT) model applicable to simulating CO2 and H2O fluxes from the canopies of rubber plantations, which are characterized by distinct canopy clumping produced by regular spacing of plantation trees. Rubber (Hevea brasiliensis Müll. Arg.) plantations, which are rapidly expanding into both climatically optimal and sub-optimal environments throughout mainland Southeast Asia, potentially change the partitioning of water, energy, and carbon at multiple scales, compared with traditional land covers it is replacing. Describing the biosphere-atmosphere exchange in rubber plantations via SVAT modeling is therefore essential to understanding the impacts on environmental processes. The regular spacing of plantation trees creates a peculiar canopy structure that is not well represented in most SVAT models, which generally assumes a non-uniform spacing of vegetation. Herein we develop a SVAT model applicable to rubber plantation and an evaluation method for its canopy structure, and examine how the peculiar canopy structure of rubber plantations affects canopy CO2 and H2O exchanges. Model results are compared with measurements collected at a field site in central Cambodia. Our findings suggest that it is crucial to account for intensive canopy clumping in order to reproduce observed rubber plantation fluxes. These results suggest a potentially optimal spacing of rubber trees to produce high productivity and water use efficiency.

  15. Relation between two-point Green functions of ${\\cal N}=1$ SQED with $N_f$ flavors, regularized by higher derivatives, in the three-loop approximation

    E-Print Network [OSTI]

    A. E. Kazantsev; K. V. Stepanyantz

    2014-10-05T23:59:59.000Z

    We verify the identity which relates the two-point Green functions of ${\\cal N}=1$ SQED with $N_f$ flavors, regularized by higher derivatives, by explicit calculations in the three-loop approximation. This identity explains why in the limit of the vanishing external momentum the two-point Green function of the gauge superfield is given by integrals of double total derivatives in the momentum space. It also allows to derive the NSVZ $\\beta$-function exactly in all loops if the renormalization group functions are defined in terms of the bare coupling constant. In order to verify the considered identity we use it for constructing integrals giving the three-loop $\\beta$-function starting from the two-point Green functions of the matter superfields in the two-loop approximation. Then we demonstrate that the results for these integrals coincide with the sums of the corresponding three-loop supergraphs.

  16. Air Quality and Outdoor Activity Guidance for Schools Regular physical activity --at least 60 minutes each day --promotes health and fitness. The table below shows when and how to

    E-Print Network [OSTI]

    Air Quality and Outdoor Activity Guidance for Schools Regular physical activity -- at least 60 physical activity based on the Air Quality Index. This guidance can help protect the health of all children, including teenagers, who are more sensitive than adults to air pollution. Check the air quality daily at www

  17. UKAEA Discounts is available on-line to all employees of UKAEA. UKAEA Discounts is a free to use benefit, paid for by UKAEA, and offers numerous opportunities to regularly save

    E-Print Network [OSTI]

    benefit, paid for by UKAEA, and offers numerous opportunities to regularly save money on normal everyday shopping. It has the potential to save you many £10s or even £100s per year. The 3 main ways of saving using UKAEA Discounts are: Re-loadable gift cards Re-loadable gift cards typically save you between 5

  18. SOMS HYBRID SPIN-ON FILTER Sponsor: SOMS Technologies

    E-Print Network [OSTI]

    Salama, Khaled

    the lubricating oil. Some premium filters state filtration efficiency down to 25 microns. However, it is particles engine oil filters effectively remove contaminant particles larger than 40 -50 microns from smaller than these, which accumulate in the oil, damage the filter, and force regular and frequent oil

  19. Scalar relativistic computations of nuclear magnetic shielding and g-shifts with the zeroth-order regular approximation and range-separated hybrid density functionals

    SciTech Connect (OSTI)

    Aquino, Fredy W.; Govind, Niranjan; Autschbach, Jochen

    2011-10-01T23:59:59.000Z

    Density functional theory (DFT) calculations of NMR chemical shifts and molecular g-tensors with Gaussian-type orbitals are implemented via second-order energy derivatives within the scalar relativistic zeroth order regular approximation (ZORA) framework. Nonhybrid functionals, standard (global) hybrids, and range-separated (Coulomb-attenuated, long-range corrected) hybrid functionals are tested. Origin invariance of the results is ensured by use of gauge-including atomic orbital (GIAO) basis functions. The new implementation in the NWChem quantum chemistry package is verified by calculations of nuclear shielding constants for the heavy atoms in HX (X=F, Cl, Br, I, At) and H2X (X = O, S, Se, Te, Po), and Te chemical shifts in a number of tellurium compounds. The basis set and functional dependence of g-shifts is investigated for 14 radicals with light and heavy atoms. The problem of accurately predicting F NMR shielding in UF6-nCln, n = 1 to 6, is revisited. The results are sensitive to approximations in the density functionals, indicating a delicate balance of DFT self-interaction vs. correlation. For the uranium halides, the results with the range-separated functionals are mixed.

  20. Covariance regularization in inverse space

    E-Print Network [OSTI]

    Administrator

    Apr 1, 2009 ... the data multiplied by a scale factor (Oke er of, 2002), .... covariances, where the vertical correlation scale depends .... Before examining local.

  1. MEMBER GUIDE REGULAR SEMESTER HOURS

    E-Print Network [OSTI]

    Karonis, Nicholas T.

    room - Weight lifting rooms - 3-Lane, 1/5 mile jogging and walking track - 8 Racquetball with saunas - Meeting room - Juice bar in lobby with televisions - Nutrition and personal training - Table bikes - Stair Masters climbers - Cybex 3 & 5 Station weight selector strength trainer - 6 Televisions

  2. Attachment G THIRD REGULAR SESSION

    E-Print Network [OSTI]

    , based on the advice and recommendations of SC3 and TCC3. 4. Guidelines for measures described in Column MEASURE TO MITIGATE THE IMPACT OF FISHING FOR HIGHLY MIGRATORY FISH STOCKS ON SEABIRDS Conservation and Management Measure 2006-02 The Commission For The Conservation And Management Of Highly Migratory Fish Stocks

  3. STRONGLY REGULAR NONSMOOTH GENERALIZED EQUATIONS ...

    E-Print Network [OSTI]

    2015-02-18T23:59:59.000Z

    Feb 18, 2015 ... This research is supported by the Russian Foundation for Basic Research Grant 10-01-00251. †. Moscow State University, MSU, Uchebniy ...

  4. Retail Prices for Regular Gasoline

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil pricepropanepropane780 2.835 2.812 2.801

  5. Improving robustness of exoplanetary orbital fits through a regularization of the white and red Doppler noise models. Hints of a 13-year star-spot activity cycle of 55 Cancri

    E-Print Network [OSTI]

    Baluev, Roman V

    2014-01-01T23:59:59.000Z

    We consider the impact of the Doppler noise model on the statistical robustness of the exoplanetary radial-velocity fits. We show that the traditional model of the Doppler noise with an additive jitter can generate large non-linearity effects, decreasing the reliability of the fit, especially in the cases when a correleated Doppler noise is involved. We introduce a regularization of the additive noise model that can gracefully eliminate its singularities together with the associated non-linearity effects. We apply this approach to Doppler time-series data of several exoplanetary systems. It demonstrates that our new regularized noise model yields orbital fits that have either increased or at least the same statistical robustness, in comparison with the simple additive jitter. Various statistical uncertainties in the parametric estimations are often reduced, while planet detection significance is often increased. Concerning the 55 Cnc five-planet system, we show that its Doppler data contain significant correl...

  6. What is the Chance that the Equity Premium Varies Evidence from Predictive Regressions

    E-Print Network [OSTI]

    Kahana, Michael J.

    Regressions Abstract We examine the evidence on excess stock return predictability in a Bayesian setting by the historical time series of returns and predictor variables. We find that taking into account the stochastic;1 Introduction This paper investigates the evidence in favor of stock return predictability from a model

  7. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    through capability of CHP equipment. Thomson Technology,Germany, 2008. Pacific Region CHP Application Center, EnergyMarnay ^ * Pacific Region CHP Application Center ^ Lawrence

  8. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    schedule. Of course, running CHP systems at the time ofride-through capability of CHP equipment, June 2007.Kammen* * Pacific Region CHP Application Center ^ Lawrence

  9. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    What is the appropriate level of installed capacity of thesecost? • How should the installed capacity be operated so asand how much of the installed capacity will be running • the

  10. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    What is the appropriate level of installed capacity of thesecost? ? How should the installed capacity be operated so asand how much of the installed capacity will be running ? the

  11. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    The actual cost of doing this for a fuel cell system couldaverage cost of adding this capability to a fuel cell systemcost would depend much more greatly on how steady the load was when the fuel cell

  12. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    range of a fuel cell is limited, this cost would depend muchThe actual cost of doing this for a fuel cell system couldaverage cost of adding this capability to a fuel cell system

  13. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    Cooling Heat and Power (CCHP) systems are being installed atand heating loads. These CCHP systems can also act as backupgenerators. In all cases the CCHP systems are rated at a

  14. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    heating, cooling, and power (CCHP) system in addition toIn all cases the CHP/CCHP system have a small fraction of1 Diesel generators and CHP/CCHP equipment as installed in

  15. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    Commission - FERC Definition) Fraction of Energy Demand MetCommission - FERC Definition) Fraction of Energy Demand MetCommission - FERC Definition) Fraction of Energy Demand Met

  16. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    pdf/E-20.pdf, May 2008. PG&E natural gas tariffs. http://pdf/G-NT.pdf, May 2008. PG&E natural gas tariffs. http://than less expensive natural gas fired reciprocating engine

  17. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    and forecast 2008 natural gas cost data. IKUN Energy, 2008.fueled by either natural gas or solar energy providingelectricity tariff, natural gas prices, and other relevant

  18. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    cooling and power system provides electricity and cooling to a data centercooling and power system provides electricity and cooling to a data centersystem with a high cooling load and no heating load (such as a data center)

  19. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    CCP system provides electricity and cooling to a data centersystem with a high cooling load and no heating load (such as a data center)

  20. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    SciTech Connect (OSTI)

    Norwood, Zack; Lipman, Tim; Marnay, Chris; Kammen, Dan

    2008-09-30T23:59:59.000Z

    This report analyzes the current economic and environmental performance of combined heat and power (CHP) systems in power interruption intolerant commercial facilities. Through a series of three case studies, key trade-offs are analyzed with regard to the provision of black-out ridethrough capability with the CHP systems and the resutling ability to avoid the need for at least some diesel backup generator capacity located at the case study sites. Each of the selected sites currently have a CHP or combined heating, cooling, and power (CCHP) system in addition to diesel backup generators. In all cases the CHP/CCHP system have a small fraction of the electrical capacity of the diesel generators. Although none of the selected sites currently have the ability to run the CHP systems as emergency backup power, all could be retrofitted to provide this blackout ride-through capability, and new CHP systems can be installed with this capability. The following three sites/systems were used for this analysis: (1) Sierra Nevada Brewery - Using 1MW of installed Molten Carbonate Fuel Cells operating on a combination of digestor gas (from the beer brewing process) and natural gas, this facility can produce electricty and heat for the brewery and attached bottling plant. The major thermal load on-site is to keep the brewing tanks at appropriate temperatures. (2) NetApp Data Center - Using 1.125 MW of Hess Microgen natural gas fired reciprocating engine-generators, with exhaust gas and jacket water heat recovery attached to over 300 tons of of adsorption chillers, this combined cooling and power system provides electricity and cooling to a data center with a 1,200 kW peak electrical load. (3) Kaiser Permanente Hayward Hospital - With 180kW of Tecogen natural gas fired reciprocating engine-generators this CHP system generates steam for space heating, and hot water for a city hospital. For all sites, similar assumptions are made about the economic and technological constraints of the power generation system. Using the Distributed Energy Resource Customer Adoption Model (DER-CAM) developed at the Lawrence Berkeley National Laboratory, we model three representative scenarios and find the optimal operation scheduling, yearly energy cost, and energy technology investments for each scenario below: Scenario 1 - Diesel generators and CHP/CCHP equipment as installed in the current facility. Scenario 1 represents a baseline forced investment in currently installed energy equipment. Scenario 2 - Existing CHP equipment installed with blackout ride-through capability to replace approximately the same capacity of diesel generators. In Scenario 2 the cost of the replaced diesel units is saved, however additional capital cost for the controls and switchgear for blackout ride-through capability is necessary. Scenario 3 - Fully optimized site analysis, allowing DER-CAM to specify the number of diesel and CHP/CCHP units (with blackout ride-through capability) that should be installed ignoring any constraints on backup generation. Scenario 3 allows DER-CAM to optimize scheduling and number of generation units from the currently available technologies at a particular site. The results of this analysis, using real data to model the optimal schedulding of hypothetical and actual CHP systems for a brewery, data center, and hospital, lead to some interesting conclusions. First, facilities with high heating loads will typically prove to be the most appropriate for CHP installation from a purely economic standpoint. Second, absorption/adsorption cooling systems may only be economically feasible if the technology for these chillers can increase above current best system efficiency. At a coefficient of performance (COP) of 0.8, for instance, an adsorption chiller paired with a natural gas generator with waste heat recovery at a facility with large cooling loads, like a data center, will cost no less on a yearly basis than purchasing electricity and natural gas directly from a utility. Third, at marginal additional cost, if the reliability of CHP systems proves to be at

  1. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    facility can produce electricty and heat for the brewery andfacility can produce electricty and heat for the brewery and

  2. Making Better Use of Ethanol as a Transportation Fuel With “Renewable Super Premium”

    Broader source: Energy.gov [DOE]

    Breakout Session 2: Frontiers and Horizons Session 2–B: End Use and Fuel Certification Brian West, Deputy Director for the Fuels, Engines, and Emissions Research Center, Oak Ridge National Laboratory

  3. Increasing Biofuel Deployment and Utilization through Development of Renewable Super Premium: Infrastructure Assessment

    SciTech Connect (OSTI)

    Moriarty, K.; Kass, M.; Theiss, T.

    2014-11-01T23:59:59.000Z

    A high octane fuel and specialized vehicle are under consideration as a market opportunity to meet federal requirements for renewable fuel use and fuel economy. Infrastructure is often cited as a barrier for the introduction of a new fuel. This report assesses infrastructure readiness for E25 (25% ethanol; 75% gasoline) and E25+ (more than 25% ethanol). Both above-ground and below-ground equipment are considered as are the current state of stations, codes and regulations, and materials compatibility.

  4. Ryan Naraine, InternetNews, 2004.09.10: "MS Premium customers get early security

    E-Print Network [OSTI]

    Bernstein, Daniel

    into msg. Smasher still has to be alphabetic. If the legitimate return address was 0x08056fbe then some

  5. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    investment in CHP could significantly benefit the facility in terms of both costcost, and energy technology investments for each scenario below: Scenario 1 Diesel generators and CHP/cost, and energy technology investments for each scenario below: Scenario 1 Diesel generators and CHP/

  6. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    standpoint. Secondly, waste heat driven thermal coolingin the summer, when waste heat could be used for cooling,

  7. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    natural gas generator with waste heat recovery at a facilityCCHP locations that are using waste heat for cooling alsouse some of the waste heat directly for water or space

  8. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    Load Profile for a Typical Day in Each Month Electricity-only (week) Electricity-only (weekend) Heating (week) Heating (weekend) Power (Load Profile for a Typical Day in Each Month Electricity-only (week) Electricity-only (weekend) Cooling (week) Cooling (weekend) Power (Load Profile for a Typical Day in Each Month Electricity-only (week) Electricity-only (weekend) Heating (week) Heating (weekend) Power (

  9. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    substituting for diesel generation with a nearly equivalentreplacing existing diesel generation with CCHP systems withdiesel and CHP/CCHP units (with blackout ride-through capability) that should be installed ignoring any constraints on backup generation.

  10. ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM "PREMIUM POWER" APPLICATIONS IN CALIFORNIA

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    substituting for diesel generation with a nearly equivalentreplacing existing diesel generation with CCHP systems withdiesel and CCHP units (with blackout ride-through capability) to minimize the total cost function ignoring any constraints on backup generation.

  11. Integrated production/use of ultra low-ash coal, premium liquids and clean char

    SciTech Connect (OSTI)

    Kruse, C.W.

    1991-01-01T23:59:59.000Z

    This integrated, multi-product approach for utilizing Illinois coal starts with the production of ultra low-ash coal and then converts it to high-vale, coal-derived, products. The ultra low-ash coal is produced by solubilizing coal in a phenolic solvent under ChemCoal{trademark} process conditions, separating the coal solution from insoluble ash, and then precipitating the clean coal by dilution of the solvent with methanol. Two major products, liquids and low-ash char, are then produced by mild gasification of the low-ash coal. The low ash-char is further upgraded to activated char, and/or an oxidized activated char which has catalytic properties. Characterization of products at each stage is part of this project.

  12. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01T23:59:59.000Z

    Laboratory Environmental Energy Technologies Division Juneenergy cost, and energy technology investments for eachenergy cost, and energy technology investments for each

  13. DOE Premium Class Travel Reports for FY 09 and FY 13

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613PortsmouthBartlesvilleAbout »Department of2 DOEDepartment ofPosting Practices #1 Travel

  14. DOE Premium Class Travel Report for FY 09 through FY 13 | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsNovember 13, 2014ContributingDOE Contract DOE Internationalwith 17O

  15. Guidance on Waivers of Premium Pay To Meet A Critical Need | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment ofof EnergyEnvironmental

  16. Increasing Biofuel Deployment and Utilization through Development of Renewable Super Premium: Infrastructure Assessment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other News Community Connections:HAZARD ANALYSES OFIncreasing

  17. EXC-12-0006 - In the Matter of Premium Quality Lighting, Inc. | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroup Report |of Energy Januaryof

  18. ITP Distributed Energy: Assessment of Combined Heat and Power Premium Power Applications in California

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGENDDepartmentSeptember 20092009 | UC Berkeley UC

  19. Creating and Implementing a Regularized Monitoring and EnforcementSystem for China's Mandatory Standards and Energy Information Label forAppliances

    SciTech Connect (OSTI)

    Lin, Jiang

    2007-03-01T23:59:59.000Z

    China has developed a comprehensive program of energy efficiency standards and labels for household appliances. In 1989, China first launched its minimum energy performance standards (MEPS), which are now applied to an extensive list of products. In 1998, China launched a voluntary energy endorsement label, which has grown to cover both energy-saving and water-saving products. And, in 2005, China launched a mandatory energy information label that initially covered two products. CLASP has assisted China in developing 11 minimum energy performance standards (MEPS) for 9 products and endorsement labels for 11 products including: refrigerators; air conditioners; televisions; printers; computers; monitors; fax machines; copiers; DVD/VCD players; external power supplies; and set-top boxes. CLASP has also assisted China in the development of the mandatory energy information label. Increasingly, attention is being placed on maximum energy savings from China's standards and labeling (S&L) efforts in order to meet the recently announced goal of reducing China's energy intensity by 20 percent by 2010 with an interim objective of 4 percent in 2006. China's mandatory standards system is heavily focused on the technical requirements for efficiency performance, but historically, it has lacked administrative and personnel capacity to undertake monitoring and enforcement of these legally binding standards. Similarly, resources for monitoring and enforcement have been quite limited. As a consequence, compliance to both the mandatory standards and the mandatory energy information label is uneven with the potential and likely result of lost energy savings. Thus, a major area for improvement, which could significantly increase overall energy savings, is the creation and implementation of a regularized monitoring system for tracking the compliance to, and enforcement of, mandatory standards and the energy information label in China. CLASP has been working with the China National Institute of Standardization (CNIS), the China Administration for Quality, Supervision, Inspection and Quarantine (AQSIQ) and relevant stakeholders in the industry to develop a stronger system of monitoring and enforcement. In November 2005, CNIS and LBNL (a CLASP implementing partner) with funding from the Energy Foundation jointly organized an international workshop to present the international best practices in S&L monitoring and enforcement. Currently, CNIS is developing a guideline for monitoring and enforcement for appliance standards. With support from METI, CLASP has been able to expand the on-going collaboration with CNIS to include enforcement needs for the mandatory energy information label and to accelerate the progress of the project to develop a more robust monitoring and enforcement for S&L programs in China. This expanded effort has included: (1) Holding an enforcement and monitoring roadmap planning workshop with key S&L stakeholders; (2) Interviews with S&L stakeholders on the need and scope of national compliance tests; (3) Research on past enforcement activities; (4) An analysis of compliance data from the mandatory energy information labeling program; (5) Interviews with stakeholders on the need and scope of testing infrastructure; and (6) Development of a roadmap for future activities. This report summarizes the findings of these activities and identifies the progress that China is making, and can make, toward developing a stronger system of monitoring and enforcement (M&E). In sum, it outlines a vision of moving forward with more vigorous M&E in China.

  20. An Integrated Experimental and Computational Investigation into the Dynamic Loads and Free-surface Wave-Field Perturbations Induced by Head-Sea Regular Waves on a 1/8.25 Scale-Model of the R/V ATHENA

    E-Print Network [OSTI]

    Ratcliffe, Toby; O'Shea, Thomas T; Fu, Thomas; Russell, Lauren; Dommermuth, Douglas G

    2014-01-01T23:59:59.000Z

    A 1/8.25 scale-model of the U.S. Navy Research Vessel ATHENA was tested in regular head-sea waves to obtain data for validation of computational fluid dynamics (CFD) predictive tools. The experiments were performed in the David Taylor Model Basin at the Naval Surface Warfare Center (NSWC). With the model towed fixed in head-seas, horizontal and vertical loads on the model were obtained at two Froude numbers, $F_r=0.25$ and $F_r=0.43$. The model was run at two conditions of head-sea wavelengths corresponding to $\\lambda=2L_o$ and $\\lambda=1/2L_o$ with $H/\\lambda=0.03$, where $L_o$ is the length of the model and $H=2 a$ is the wave height. The wave field perturbations induced by the head-sea waves were quantified from free-surface images generated by a laser light sheet. Predictions of the horizontal and vertical loads on the model in regular head sea waves were made with the Numerical Flow Analysis (NFA) code. Numerical predictions of the wave-field perturbations were compared with the experimental data and th...

  1. Deterministic Operations Research Updated: October 6, 2011

    E-Print Network [OSTI]

    Phillips, David

    of the page is incorrect. The correct solution is to purchase 10,000 barrels of crude oil 1, 15,000 barrels of crude oil 2, and 7,625 barrels of crude oil 3. These barrels are blended as Crude Oil 1 Crude Oil 2 Crude Oil 3 Total Regular 3750 6750 4500 15000 Premium 6250 8250 3125 17625 where the optimal profit

  2. Construction of a regular 17-gon

    E-Print Network [OSTI]

    Hence our construction is possible if we can reduce the solution of. (5.8.1) to that of such a series of equations. The problem was solved by Gauss, who proved ...

  3. EXACT REGULARIZATION OF CONVEX PROGRAMS November 18 ...

    E-Print Network [OSTI]

    2006-11-18T23:59:59.000Z

    Nov 18, 2006 ... lpi-reactor. 2.0e+00. 2.0e+00. 1.5e+06 ? 1.1e+06. 569 ?. 357 ..... intersection point of Hk, Hk+1 and the x1x3-plane. Direct calculation yields xk.

  4. Recursion relations, Helicity Amplitudes and Dimensional Regularization

    E-Print Network [OSTI]

    Quigley, C; Quigley, Callum; Rozali, Moshe

    2006-01-01T23:59:59.000Z

    Using the method of on-shell recursion relations we compute tree level amplitudes including D-dimensional scalars and fermions. These tree level amplitudes are needed for calculations of one-loop amplitudes in QCD involving external quarks and gluons.

  5. Regularization Using a Parameterized Trust Region Subproblem ...

    E-Print Network [OSTI]

    discretization of aba red h olm integral edc uation of t h e fi rst k indeB see2DUfFgP RhY Th ei687 T ¡97p@ qsrutuv command produces t h e matrixw G and t h e ...

  6. 2013 -2014STUDENT GUIDE REGULAR SEMESTER HOURS

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    - Weight lifting rooms - 3-Lane, 1/5 mile jogging and walking track - 8 Racquetball/wallyball courts - 2 - Meeting room - Juice bar in lobby with televisions - Nutrition and personal training - Table tennis area-weight free weights - Versa balls - Medicine balls - 4 Televisions - 4 Multipurpose courts for basketball

  7. ADAPTIVE REGULARIZED SELF-CONSISTENT FIELD ITERATION ...

    E-Print Network [OSTI]

    2012-10-08T23:59:59.000Z

    †Department of Mathematics, MOE-LSC and Institute of Natural Sciences, Shanghai Jiaotong University, China. (zw2109@sjtu.edu.cn). Research ...... [9] P. Hohenberg and W. Kohn, Inhomogeneous electron gas, Phys. Rev., 136 (1964), pp.

  8. Regular differentials and equidimensional scheme-maps.

    E-Print Network [OSTI]

    1910-30-30T23:59:59.000Z

    Now fix a base scheme S, and restrict attention to those S-schemes Z whose ... g is smooth at f(x); and since all the relevant data are compatible with flat base.

  9. Catalogs of Regular Graphs Robert A. Beezer

    E-Print Network [OSTI]

    Beezer, Robert A.

    Science University of Puget Sound Tacoma, Washington 98416 May 12, 1992 Abstract Exhaustive catalogs

  10. Enhancing Approximations for Regular Reachability Analysis

    E-Print Network [OSTI]

    Boyer, Edmond

    , and Olga Kouchnarenko FEMTO-ST CNRS 6174, University of Franche-Comté & Inria/CASSIS, France firstname analysis is a challenging issue in formal software verification. Since the reachability problem

  11. STRONG SOLUTIONS, GLOBAL REGULARITY AND STABILITY OF ...

    E-Print Network [OSTI]

    2012-10-28T23:59:59.000Z

    can be characterized by the Helfrich bending elasticity energy of the surface [4, 8, 23] such that they are minimizers of the bending energy under possible ...

  12. REGULAR ARTICLE Warming and increased precipitation frequency

    E-Print Network [OSTI]

    Neher, Deborah A.

    change on soil processes, including soil nutrient cycling and carbon sequestration, have been depletion of labile carbon pools (Allison et al. 2010; Knorr et al. 2005). However, long-term responses show

  13. ABOUT STATIONARITY AND REGULARITY IN VARIATIONAL ...

    E-Print Network [OSTI]

    2009-06-29T23:59:59.000Z

    Nauk BSSR 24, 8 (1980), 684–687. In Russian. 848. [35] Kruger, A. Y., and Mordukhovich, B. S. Generalized normals and derivatives and necessary conditions.

  14. Metric regularity and systems of generalized equations

    E-Print Network [OSTI]

    2008-02-07T23:59:59.000Z

    Moscow 117418, Russia. bSchool of Information Technology and Mathematical Sciences, University of. Ballarat, POB 663, Ballarat, Vic 3350, Australia. Abstract.

  15. on regularity conditions for complementarity problems

    E-Print Network [OSTI]

    2012-02-28T23:59:59.000Z

    AMS subject classifications. 90C33. ? This research is supported by the Russian Foundation for Basic Research Grant 10-01-00251. † Moscow State University ...

  16. Trace Norm Regularization: Reformulations, Algorithms, and Multi ...

    E-Print Network [OSTI]

    2010-03-21T23:59:59.000Z

    ?Department of Mathematics, University of Washington, Seattle, WA 98195, USA ... ‡Department of Computer Science and Engineering, Center for Evolutionary .... Recently, proximal gradient methods have been applied to solve (1). These.

  17. Regularized RBF Networks for Hyperspectral Data Classification

    E-Print Network [OSTI]

    Camps-Valls, Gustavo

    Departament de Termodin`amica, Universitat de Val`encia, Spain. Abstract. In this communication, we analyze

  18. Graph regularization methods for Web spam detection

    E-Print Network [OSTI]

    Abernethy, Jacob; Chapelle, Olivier; Castillo, Carlos

    2010-01-01T23:59:59.000Z

    An introduction to the conjugate gradient method without theonly implemented the conjugate gradient method. Note onemployed was the conjugate gradient method, de- scribed in

  19. REGULAR ENTRY IN ENCYCLOPEDIA OF DATABASE SYSTEMS

    E-Print Network [OSTI]

    Risch, Tore

    ://refworks.springer.com/database-systems/ DISTRIBUTED ARCHITECTURE Tore Risch, Uppsala University, Sweden, http://user.it.uu.se/~torer/ SYNONYMS Parallel database, federated database, multi-database, peer-to-peer database DEFINITION A distributed database is a database where data management is distributed over several nodes (computers) in a computer

  20. No 1 September 2012 Regular Features

    E-Print Network [OSTI]

    Joshi, Manoj

    in human geography) have received a grant from the EPSRC with ad- ditional funding supplied by the Energy consortium to improve the application of statistical techniques to a range of natural hazards in general

  1. REGULARIZATION AND PRECONDITIONING OF KKT SYSTEMS ...

    E-Print Network [OSTI]

    2007-08-30T23:59:59.000Z

    Aug 31, 2007 ... The reader interested in the convergence analysis of this method ...... A failure is declared when the above tests are not satisfied within 100.

  2. Basics of regularization theory Alessandra Celletti

    E-Print Network [OSTI]

    of Birkhoff's transformation. 1 Introduction The motion of the celestial bodies of the solar system is ruled between any two objects is marked by the fact that their distance becomes zero, which corresponds to a sin of energy (see also [1], [4], [5], [6], [7], [8]). Before entering into the intriguing world

  3. AN INDUCTION THEOREM AND NONLINEAR REGULARITY ...

    E-Print Network [OSTI]

    2014-10-11T23:59:59.000Z

    three articles [27, 28, 29], several basic statements were established which ...... Methods and Applications, Kluwer Academic Publishers, Dordrecht, 2002.

  4. EFFICIENT BASIS CHANGE AND REGULARIZATION FOR SPARSE ...

    E-Print Network [OSTI]

    2011-09-08T23:59:59.000Z

    measurement error and noise. Let x? denote the minimizer of (17). Theo- .... [4] S. Becker, J. Bobin, and E.J. Cand`es. Nesta: A fast and accurate first-order ...

  5. Regularity of mappings inverse to Sobolev mappings

    SciTech Connect (OSTI)

    Vodop'yanov, Sergei K [S.L. Sobolev Institute for Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk (Russian Federation)

    2012-10-31T23:59:59.000Z

    For homeomorphisms {phi}:{Omega}{yields}{Omega}' on Euclidean domains in R{sup n}, n{>=}2, necessary and sufficient conditions ensuring that the inverse mapping belongs to a Sobolev class are investigated. The result obtained is used to describe a new two-index scale of homeomorphisms in some Sobolev class such that their inverses also form a two-index scale of mappings, in another Sobolev class. This scale involves quasiconformal mappings and also homeomorphisms in the Sobolev class W{sup 1}{sub n-1} such that rankD{phi}(x){<=}n-2 almost everywhere on the zero set of the Jacobian det D{phi}(x). Bibliography: 65 titles.

  6. Regularization Methods for Radio Tomographic Imaging

    E-Print Network [OSTI]

    Guevara-Vasquez, Fernando

    is in automatic monitoring and control in "smart" homes and buildings. Some building control systems detect motion the ability to detect and track offenders through building walls [3]. By showing the locations of people within a building during hostage situations, building fires, or other emergencies, RTI can help law

  7. Regular Full-Time Staff and Management

    E-Print Network [OSTI]

    ; as well as life, disability and critical illness insurance for individuals and families. As a leading contains important information and should be kept in a safe place known to you and your family. The Plan is underwritten by 10-11 #12;Protecting Your Personal Information At Great-West Life, we recognize and respect

  8. Computational Commutative Algebra Castelnuovo-Mumford regularity

    E-Print Network [OSTI]

    Robbiano, Lorenzo

    with HPM (X) a polynomial of degree d - 1 where d = Krull dimension of M (> 0). HPM (j) is called Hilbert is the multiplicity of M and d = dim M. Define reg-index(M) := max{j : HFM (j) = HPM (j)} Maria Evelina Rossi

  9. 1. Control moisture. 2. Clean regularly.

    E-Print Network [OSTI]

    , water heaters, and fireplaces that burn fuel must vent to the outside. Stoves, ovens, and cook on the things we do to affect how healthy our home is. Step 1. Control Moisture Water and excessive humidity of pesticides. Food and water attract pests. Controlling food and water helps to minimize pests. Sealing

  10. Retail Prices for Regular Gasoline - Conventional Areas

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray Scattering of0October 17,Results842.668

  11. Retail Prices for Regular Gasoline - Reformulated Areas

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray Scattering of0October

  12. Measurement of vapor phase mercury emissions at coal-fired power plants using regular and speciating sorbent traps with in-stack and out-of-stack sampling methods

    SciTech Connect (OSTI)

    Chin-Min Cheng; Chien-Wei Chen; Jiashun Zhu; Chin-Wei Chen; Yao-Wen Kuo; Tung-Han Lin; Shu-Hsien Wen; Yong-Siang Zeng; Juei-Chun Liu; Wei-Ping Pan [Western Kentucky University, Bowling Green, KY (United States). Institute for Combustion Science and Environmental Technology

    2009-09-15T23:59:59.000Z

    A systematic investigation of sorbent-trap sampling, which is a method that uses paired sorbent traps to measure total vapor phase mercury (Hg), was carried out at two coal-fired power plants. The objective of the study was to evaluate the effects (if any) on data quality when the following aspects of the sorbent trap method are varied: (a) sorbent trap configuration; (b) sampling time; and (c) analytical technique. Also, the performance of a speciating sorbent trap (i.e., a trap capable of separating elemental Hg from oxidized Hg), was evaluated by direct comparison against the Ontario Hydro (OH) reference method. Flue gas samples were taken using both 'regular' and modified sorbent trap measurement systems. Both short-term (1.5 h) and long-term (18 h to 10 days) samples were collected. The in-stack and out-of-stack sampling methods produced satisfactory relative accuracy results for both the short-term and long-term testing. For the short-term tests, the in-stack sampling results compared more favorably to the OH method than did the out-of-stack results. The relative deviation between the paired traps was considerably higher for the short-term out-of-stack tests than for the long-term tests. A one-way analysis of variance (ANOVA), showed a statistically significant difference (p < 0.1) between the direct combustion and wet-chemistry analytical methods used in the study; the results from the direct combustion method were consistently higher than the wet-chemistry results. The evaluation of the speciating mercury sorbent trap demonstrated that the trap is capable of providing reasonably accurate total mercury concentrations and speciation data that are somewhat comparable to data obtained with the OH method. 5 refs., 4 figs., 8 tabs.

  13. Is There Really an Export Wage Premium? A Case Study of Los Angeles Using Matched Employer-Employee Data

    E-Print Network [OSTI]

    Breau, Sebastien; Rigby, David L.

    2006-01-01T23:59:59.000Z

    wage inequality: How much do exports matter? In Innovation,A.B. and J. Wagner 1997. Exports and success in GermanP. and N.N. Lundin 2003. Exports as an indicator on or

  14. Interest rate premiums and capital rationing in agriculture: a look at the effects of multi-regional banking in Texas

    E-Print Network [OSTI]

    Gray, Allan Wayne

    1993-01-01T23:59:59.000Z

    -efficient portfolio for a multi-regional bank in Northwest Texas. A whole farm simulation model was used for simulating the macro-credit situation and the distributions of prices and yields for three farms under three different debt levels. The whole farm simulation...

  15. Clean, premium-quality chars: Demineralized and carbon enriched. Quarterly report, December 1, 1991--February 29, 1992

    SciTech Connect (OSTI)

    Smith, G.V. [Southern Illinois Univ., Carbondale, IL (United States)

    1992-08-01T23:59:59.000Z

    The interaction of methane, methane/oxygen, helium, and hydrogen with IBC-102 coal samples ({le} 2mg) has been investigated in a thermogravimetric reactor at 20{degrees}C--650{degrees}C. The results show that the reactive gases are converting some of the mineral matter of the coal into catalysts through chemical reactions (reduction or oxidation). Also, these gases (except He) dissolve in the softened coal. Added clays (kaolinite and Ca-montmorillonite) increase the reactivity of the coal. This higher reactivity may be attributed to the fact that clays may serve as catalysts for methane activation, may prevent the coal agglomeration, and/or may increase the number of active sites for the reaction by modification of the geometric structure of the coal surface. Differential Scanning Calorimetry (DSC) experiments show that clean coal (no mineral matter) devolatilizes at a lower temperature than raw coal. Also, the preoxidation at 150{degrees}C for 50 minutes results in a 13{degrees} lowering of the devolatilization temperature. ISDR-FTIR experiments suggest that phenol groups of the coal play an important role in the cross-linkage of the coal structure when thermally treated.

  16. Essays in financial economics : terror, consumption, and investment, currency options and liquidity premium, and purchasing power parity

    E-Print Network [OSTI]

    HajYehia, Samer

    2004-01-01T23:59:59.000Z

    This thesis is composed of three chapters, each includes one paper. The first chapter includes a paper that analyses the impact of terror on consumption and investment. This paper provides evidence on how consumers and ...

  17. Mortgage default and student outcomes, the solar home price premium, and the magnitude of housing price declines

    E-Print Network [OSTI]

    Dastrup, Samuel R.

    2011-01-01T23:59:59.000Z

    consumer adoption of solar panels in San Diego,” Unpublishedlog sales price on solar panels 94 Table 2.5: Predictedestimates of log price on solar panels with neighborhood

  18. 10/1/09 3:54 PMhttp://evworld.com/newsletter/update_premium2008.cfm Page 1 of 6

    E-Print Network [OSTI]

    Firestone, Jeremy

    Sep 2009 Platinum Sponsors Corporate Sponsorship Info CURRENTS Canadian Healthcare and Electric Cars production as the auto industry moves to introduce electric cars requiring this lightest of all metals. 28 Sep 2009 Of Dysprosium, Neodymium and Other Wrinkles More than 40 electric cars debuted in Frankfurt

  19. Mortgage default and student outcomes, the solar home price premium, and the magnitude of housing price declines

    E-Print Network [OSTI]

    Dastrup, Samuel R.

    2011-01-01T23:59:59.000Z

    households face typically higher time of use prices for any electricityelectricity prices in San Diego County are tiered by monthly consumption, with each householdHouseholds may be uncertain about how much electricity the solar panels will generate, the future price of electricity

  20. FLEXIBLE BENEFIT PLAN These options provide you with the opportunity to pay some of your insurance premiums and other eligible

    E-Print Network [OSTI]

    - 40 - FLEXIBLE BENEFIT PLAN These options provide you with the opportunity to pay some of your in the Flexible Benefit Plan, your monthly taxable income is reduced. Dollars elected in the health care spending it may be eligible for pre-tax payments within your Flexible Benefit Plan. Health-related insurance

  1. Presentation Title, Arial Regular 29pt Sub title, Arial Regular 24pt

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARD ACCOUNTINGQuantitativeComputationalandonCentre for

  2. Making Better Use of Ethanol as a Transportation Fuel With "Renewable...

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

    Making Better Use of Ethanol as a Transportation Fuel With "Renewable Super Premium" Making Better Use of Ethanol as a Transportation Fuel With "Renewable Super Premium" Breakout...

  3. STAT 472 F14 Chapter 6 Homework.pdf

    E-Print Network [OSTI]

    Owner

    2014-11-04T23:59:59.000Z

    Nov 4, 2014 ... The gross premium using the Portfolio Percentile Premium Principle assuming the company issues 10,000 policies and wants the probability of ...

  4. ANTHEM BLUE CROSS AND BLUE SHIELD You may select from two separate dental care plans to meet your individual needs. Premium cost

    E-Print Network [OSTI]

    - 34 - ANTHEM BLUE CROSS AND BLUE SHIELD You may select from two separate dental care plans to meet two choices are: Anthem Blue Dental PPO Plus Anthem Blue Dental PPO NOTE: Children are eligible in retirement. PERA retirement benefits are based on your highest three years of earnings. Anthem Blue Dental

  5. st rait st imes.com http://www.straitstimes.com/premium/opinion/story/russia-building-its-eastern-regions-20140104 By Salim Osman Senior Writer

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    this approach. First, as the global economic and political gravity shif ts to the Asia-Pacif ic, Moscow Vladimir Putin and other leaders have realised the need to restructure Russia's solely energy-based economy stagnation there. The energy sector, however, is the low-hanging f ruit. The Russian Far East and the East

  6. Integrated production/use of ultra low-ash coal, premium liquids and clean char. Final technical report, September 1, 1991--August 31, 1992

    SciTech Connect (OSTI)

    Kruse, C.W.; Carlson, S.L. [Illinois State Geological Survey, Champaign, IL (United States); Snoeyink, V.L.; Feizoulof, C.; Assanis; Syrimis, M. [Illinois Univ., Urbana (United States); Fatemi, S.M. [Amoco, Naperville, IL (United States)

    1992-12-31T23:59:59.000Z

    The objective of this research is to invert the conventional scale of values for products of coal utilization processes by making coal chars (carbons) that, because of their unique properties, are the most valuable materials in the product slate. A unique type of coal-derived carbon studied in this project is oxidized activated coal char having both adsorptive and catalyst properties. Major program elements were (a) preparation and characterization of materials (b) characterization of carbons and catalyst testing (c) completion of diesel engine testing of low-ash coal and (d) initiation of a two-year adsorption study. Materials prepared were (a) two low-ash coal samples one via ChemCoal processing of IBC-109 and the other by acid dissolution of IBC-109`s mineral matter, (b) coal char (MG char), (c) activated low-ash carbon (AC), (d) oxidized activated carbon (OAC). Amoco continued its support with state-of-the art analytical capabilities and development of catalyst testing procedures. Diesel engine tests were made with low ash coal dispersed in diesel fuel at solid loadings of 20% and 35%. The slurry was successfully burned in cylinder 2 of a two-cylinder diesel engine, after modifications of the engine`s fuel injection system. The higher speed proved to be more favorable but the slurry burned with a slightly improved thermal and combustion efficiency at both speeds with respect to diesel fuel alone. Adsorption studies included preparation of seven base-line carbon samples and their characterization, including their N{sub 2} BET surface areas and apparent densities. Paranitrophenol (PNP) adsorption isotherms were determined for the six controls. Oxidation of carbon with nitric acid decreases activated carbon`s PNP adsorption capacity while air oxidation increases adsorption capacity.

  7. Integrated production/use of ultra low-ash coal, premium liquids and clean char. Interim final technical report, 1 September, 1992--31 August, 1993

    SciTech Connect (OSTI)

    Kruse, C.W.; Carlson, S.L. [Illinois State Geological Survey, Champaign, IL (United States); Fatemi, M. [Amoco Research Center, Naperville, IL (United States); Snoeyink, V.L.; Feizoulof, C.A. [Univ. of Illinois, Urbana, IL (United States); Klavetter, E. [Sandia National Labs., Albuquerque, NM (United States)

    1993-12-31T23:59:59.000Z

    The ultimate objective of this project is to attain high-value, coal-derived products, especially varieties of char, from Illinois coal. The chars (carbons) made in this study, because of their special properties, could become the marketable materials having the highest value in the product set. Tests this quarter followed up on an unexpected correlation of surface properties of a variety of oxidized carbons with adsorption phenomena. Additional oxidized carbons were made at the ISGS and tests to establish the reproducibility of results were begun. Work will be continued through December on a no-cost extension.

  8. Integrated production/use of ultra low-ash coal, premium liquids and clean char. [Quarterly] technical report, March 1, 1993--May 31, 1993

    SciTech Connect (OSTI)

    Kruse, C.W.; Carlson, S.L. [Illinois State Geological Survey, Champaign, IL (United States); Fatemi, M. [Amoco Research Center, Naperville, IL (United States); Snoeyink, V.L.; Feizoulof, C.A. [Illinois Univ., Urbana, IL (United States); Klavetter, E. [Sandia National Labs., Albuquerque, NM (United States)

    1993-09-01T23:59:59.000Z

    Tests this quarter showed the adsorption efficiency of an oxidized activated ChemCoal{trademark} (OACC) char for removing volatile organic compounds (VOCs) from spiked water is higher than for unoxidized activated char (ACC). OACC destroyed (or reacted with) a higher percentage of VOCs when loaded char was heated quickly to 850{degrees}C. This was expected based on the OACC`s superiority as an elimination catalyst. Aromatic VOCs appeared to be adsorbed on the chars more readily than the chlorinated ones but the multichlorinated VOCs appeared to be adsorbed more strongly. The performance of two oxidized carbons (OST3-9 and OACC chars) for the removal of the VOCs from two industrial waste waters spiked with VOCs appeared similar. The more active catalyst, OST3-9 appeared more effective than OACC in destroying the adsorbed materials. A series of carbons having differing levels of oxygen on the surface was prepared by desorbing oxygen from the surface placed there by nitric acid oxidation. Tests revealed that the capacity to adsorb 2-nitrophenol increased as the outgassing temperature was increased. This indicates that PNP adsorption is increased as surface oxygen is removed from the carbon.

  9. Integrated production/use of ultra low-ash coal, premium liquids and clean char. [Quarterly] report, December 1, 1991--February 29, 1992

    SciTech Connect (OSTI)

    Kruse, C.W. [Illinois State Geological Survey, Champaign, IL (United States)

    1992-08-01T23:59:59.000Z

    The first step in the integrated, mufti-product approach for utilizing Illinois coal is the production of ultra low-ash coal. Subsequent steps convert low-ash coal to high-value, coal-derived, products. The ultra low-ash coal is produced by solubilizing coal in a phenolic solvent under ChemCoal{trademark} process conditions, separating the coal solution from insoluble ash, and then precipitating the clean coal by dilution of the solvent with methanol. Two major products, liquids and low-ash char, are then produced by mild gasification of the low-ash coal. The low ash-char is further upgraded to activated char, and/or an oxidized activated char which has catalytic properties. Characterization of products at each stage is part of this project.

  10. Integrated production/use of ultra low-ash coal, premium liquids and clean char. Technical report, March 1, 1992--May 31, 1992

    SciTech Connect (OSTI)

    Kruse, C.W.; Carlson, S.L. [Illinois State Geological Survey, Champaign, IL (United States); Snoeyink, V.L.; Feizoulof, C.; Assanis, D.N.; Syrimis, M. [Illinois Univ., Urbana, IL (United States); Fatemi, S.M. [Amoco Research Center, Naperville, IL (United States)

    1992-10-01T23:59:59.000Z

    The first step in the envisioned integrated, multi-product approach for utilizing Illinois coal is the production of ultra low-ash coal. Subsequent steps would convert low-ash coal to high-value products through mild gasification, char activation, and oxidation reactions. Approximately eight pounds of low-ash coal has been obtained from the crude reactor slurry produced for us at the University of North Dakota Energy and Environmental Research Center (UNDEERC). After treatment to remove the remaining meta-cresol, this material will be subjected to mild gasification. Low-ash mild gasification char will be activated and a catalyst surface will be added by oxidation. A 20% coal: 80% diesel fuel slurry was tested in cylinder two of a two-cylinder, diesel engine after the necessary modifications in the engine`s fuel injection system were made. Four tests indicated that the coal successfully substitutes for diesel fuel in the slurry. The fuel burns in the cylinder, with slightly improved thermal and combustion efficiency. The tests were performed at 1800 rpm and 2200 rpm and 75% load. The change in the surface properties of Calgon F-400 commercial activated carbon caused by several treatments were examined by X-ray Photoelectron Spectroscopy (XPS).

  11. Integrated production/use of ultra low-ash coal, premium liquids and clean char. Technical report, September 1, 1991--November 30, 1991

    SciTech Connect (OSTI)

    Kruse, C.W.

    1991-12-31T23:59:59.000Z

    This integrated, multi-product approach for utilizing Illinois coal starts with the production of ultra low-ash coal and then converts it to high-vale, coal-derived, products. The ultra low-ash coal is produced by solubilizing coal in a phenolic solvent under ChemCoal{trademark} process conditions, separating the coal solution from insoluble ash, and then precipitating the clean coal by dilution of the solvent with methanol. Two major products, liquids and low-ash char, are then produced by mild gasification of the low-ash coal. The low ash-char is further upgraded to activated char, and/or an oxidized activated char which has catalytic properties. Characterization of products at each stage is part of this project.

  12. Regular Inspection and Maintenance Guidance for Porous Pavements

    E-Print Network [OSTI]

    non-design loads. Damaged areas may be repaired by use of infrared heating and rerolling of pavement

  13. BOUNDS ON THE CASTELNUOVO-MUMFORD REGULARITY OF ...

    E-Print Network [OSTI]

    2007-03-15T23:59:59.000Z

    Feb 16, 2007 ... R(M,N)) = 0 for jb i=a ciZi with cb = 0. We set the postulation number of M to be ?(M) = b ? d. ..... ble/Lyon, 2001), 193–205, Contemp. Math. 331, Amer.

  14. Efficient Model Selection for Regularized Linear Discriminant Analysis

    E-Print Network [OSTI]

    Ye, Jieping

    University Tempe, AZ 85287 jieping.ye@asu.edu Tao Xiong University of Minnesota Minneapolis, MN 55455 txiong of Minnesota Minneapolis, MN 55455 janardan@cs.umn.edu Jinbo Bi CAD group, Siemens Medical Solutions, Inc. Malvern, PA 19355 jinbo.bi@siemens.com Vladimir Cherkassky University of Minnesota Minneapolis, MN 55455

  15. Online Manifold Regularization: A New Learning Setting and Empirical Study

    E-Print Network [OSTI]

    Zhu, Xiaojin "Jerry"

    Consider a mobile robot continuously learning to recognize interesting objects (x) with limited feedback) i = t 4. Store xt, let t = t + 1 SPARSE APPROXIMATIONS The algorithm is impractical Space O(T): stores all previous examples Time O(T2 ): each new example compared to all previous ones In reality

  16. Regular and Chaotic Dynamics of Triaxial Stellar Systems

    E-Print Network [OSTI]

    Monica Valluri; David Merritt

    1998-06-01T23:59:59.000Z

    We use Laskar's frequency mapping technique to study the dynamics of triaxial galaxies with central density cusps and nuclear black holes. For ensembles of 10^4 orbits, we numerically compute the three fundamental frequencies of the motion, allowing us to map out the Arnold web. We also compute diffusion rates of stochastic orbits in frequency space. The objects of fundamental importance in structuring phase space are found to be the 3-dimensional resonant tori; even when stable, such tori are not necessarily associated with periodic orbits as in systems with only two degrees of freedom. Boxlike orbits are generically stochastic, but some tube orbits are stochastic as well. The spectrum of diffusion rates for box-like orbits at a given energy is well approximated as a power law over at least six decades. Models with high central concentrations -- steep central cusps or massive black holes -- exhibit the most stochasticity. A black hole with a mass of 0.3% the mass of the galaxy is as effective as the steepest central density cusp at inducing stochastic diffusion. There is a transition to global stochasticity in box-like phase space when the mass of a central black hole exceeds 2% the galaxy mass. We predict a greater average degree of dynamical evolution in faint ellipticals, due to their high central densities and short crossing times. The evolution time is estimated to be shorter than a galaxy lifetime for absolute magnitudes fainter than about -19 or -20, consistent with the observed change in many elliptical galaxy properties at this luminosity.

  17. REGULAR PATHS IN SPARQL: QUERYING THE NCI THESAURUS

    E-Print Network [OSTI]

    Washington at Seattle, University of

    SELECT ?r1 ?r4 FROM htp://example.com/ex> WHERE { ?r1 part ?r2 . ?r2 part ?r3 . ?r3 contains ?r4 - AMIA SELECT ?r1 ?r4 FROM htp://example.com/ex> WHERE { ?r1 part ?r2 . ?r2 part ?r3 . ?r3 contains ?r4 r1 r4 B E 11/11/2008Todd Detwiler - AMIA Er Dr Cr Br 4? 3? 2? 1? SELECT ?r1 ?r4 FROM htp

  18. REGULARITY RESULTS FOR STOKES TYPE SYSTEMS Mohammed Ziane

    E-Print Network [OSTI]

    Ziane, Mohammed

    results for strongly elliptic boundary value problems in cylinder­type domains with nonhomogeneous by the hydrodynamic and thermodynamic equations under Coriolis forces. Lions, Temam and Wang used the approximation component of the wind force (the drag force) exerted on the surface of the ocean. Horizontal wind force

  19. Sufficient Conditions for Uniform Stability of Regularization Algorithms

    E-Print Network [OSTI]

    Poggio, Tomaso

    2009-12-01T23:59:59.000Z

    In this paper, we study the stability and generalization properties of penalized empirical-risk minimization algorithms. We propose a set of properties of the penalty term that is sufficient to ensure uniform ?-stability: ...

  20. Regularized greedy importance sampling Finnegan Southey Dale Schuurmans Ali Ghodsi

    E-Print Network [OSTI]

    Schuurmans, Dale

    ) for a given assignment to evidence variables e in a given network B. It is usually not possible to sam­ ple inference are stochastic methods which are guaran­ teed to converge to a correct solution in the limit that overwhelm deterministic approaches. The family of stochastic inference methods can be grouped

  1. Regularized greedy importance sampling Finnegan Southey Dale Schuurmans Ali Ghodsi

    E-Print Network [OSTI]

    Zhu, Mu

    assignment to evidence variables 0 in a given network 2 . It is usually not possible to sam- ple from are stochastic methods which are guaran- teed to converge to a correct solution in the limit of large random deterministic approaches. The family of stochastic inference methods can be grouped into the indepen- dent Monte

  2. ahlfors regularity of the perimeter measure for ... - Purdue University

    E-Print Network [OSTI]

    in q uestion , giv ing us local uniform control on \\a1\\( from here on a1w ill be part of the constants that w e use in the estimates ) . The k e y ( elementar y) obser v ...

  3. TECHNISCHE UNIVERSITAT BERLIN Regularization of linear and nonlinear descriptor systems

    E-Print Network [OSTI]

    Nabben, Reinhard

    such as modelica (https://www.model- ica.org/) or Matlab/Simulink (http://www.mathworks.com) offer excellent tools

  4. Regularization vs. Relaxation: A conic optimization perspective of ...

    E-Print Network [OSTI]

    2015-06-02T23:59:59.000Z

    Jun 2, 2015 ... sion model, with balanced model complexity (number of non-zeros in ?) ... the intercept term in linear regression, as typically the intercept term ...

  5. Performance-based regularization in mean-CVaR portfolio ...

    E-Print Network [OSTI]

    2014-11-03T23:59:59.000Z

    fits the linear model y = X?. Ridge regression corresponds to using the .... The analysis requires a non-trivial extension of the theory of M-estimators as the ...

  6. REGULAR ARTICLE A Simple Dynamic Model of Respiratory Pump

    E-Print Network [OSTI]

    Fontecave-Jallon, Julie

    ). Mathematical models are used to understand these interactions and the mechanics of respiratory system better) and introduce some dynamic properties of the respiratory system. The passive elements (rib cage and abdomen not take into account the dynamic component of the system, it appears valid for different respiratory

  7. Global regularity for the minimal surface equation in Minkowskian geometry

    E-Print Network [OSTI]

    Stefanov, Atanas

    2011-05-05T23:59:59.000Z

    of (3.7) by 22ks@t#30;k and integrate in the spatial variable x. We get 22ks #18;Z Rn .#3;#30;k/.@t#30;k/ dx #0; Z Q.#30;

  8. Ahlfors regularity of the perimeter measure for minimally smooth ...

    E-Print Network [OSTI]

    1910-50-22T23:59:59.000Z

    in Carnot-Carath eodory (CC) spaces, especially in view of the key role ...... We consider the cycle group ..... Once again, we also have the reverse inequality ?(A.

  9. Regularization of IndexOne DifferentialAlgebraic Equations with

    E-Print Network [OSTI]

    Moore, Peter K.

    , New Orleans, LA 70118 y Department of Computer Science and Army High Performance Computing Research by the Army High Performance Computing Research Center under the auspices of the Department of the Army, Army supported by the Army High Performance Computing Research Center, and the Minnesota Supercomputer Institute

  10. Are Monkeys Sensitive to the Regularity of Pay-off?

    E-Print Network [OSTI]

    Steelandt, Sophie; Broihanne, Marie-Hélène; Thierry, Bernard

    2011-01-01T23:59:59.000Z

    Reinhold. McCoy, A. N. , & Platt, M. L. (2005). Risk-B, 267, Hayden, B. Y. , & Platt, M. L. (2007). TemporalKacelnik, 1997; Hayden & Platt, 2007). In a visual gambling

  11. Bayesian Regularization and Model Choice in Structured Additive Regression

    E-Print Network [OSTI]

    Gerkmann, Ralf

    on the regression coefficients with an inno- vative multiplicative parameter expansion that induces desirable shrinkage properties. This thesis points out a possible reason why previous attempts at extending SSVS with locally varying exponential-gamma distributed variances for the differences of the P-spline coefficients

  12. Comparison of regularizations of vortex sheet motion Monika Nitsche a,

    E-Print Network [OSTI]

    Krasny, Robert

    , Robert Krasny c a University of New Mexico, Department of Mathematics and Statistics, Albuquerque, NM

  13. [1987] On complete ideals in regular local rings.pdf

    E-Print Network [OSTI]

    Zariski's work was motivated by the birational theory of linear systems on ... the following counterexample, in a power series ring k[[a:,y, 2

  14. Hopf Bifurcation of the Unsteady Regularized Driven Cavity Flow

    E-Print Network [OSTI]

    2003-12-10T23:59:59.000Z

    With the rapid increase in computing power, we can now envisage solving dynamical systems for ranges of values of physical parameters leading to nontrivial.

  15. Regular 3D Polygonal Circuits of Constant Torsion Tom Verhoeff

    E-Print Network [OSTI]

    Verhoeff, Tom

    Eindhoven University of Technology Den Dolech 2 5612 AZ Eindhoven, Netherlands Email: T.Verhoeff@tue.nl Koos

  16. Regular Expressions for Data Words Leonid Libkin and Domagoj Vrgoc

    E-Print Network [OSTI]

    Libkin, Leonid

    a renewed interest in them due to applications in querying and reasoning about data models with complex structural properties, notably XML, and more recently, graph databases. Logical formalisms designed. As the automaton model, we take register automata, which are a natural analog of NFAs for data words. We first

  17. On Dissemination Thresholds in Regular and Irregular Graph Classes

    E-Print Network [OSTI]

    Rapaport, I.; Suchan, K.; Todinca, I.; Verstraete, J.

    2011-01-01T23:59:59.000Z

    2003) 13. Hayrapetyan, A. , Kempe, D. , Pál, M. , Svitkina,Wiley, New York (2000) 16. Kempe, D. , Kleinberg, J. ,

  18. Design for manufacturability with regular fabrics in digital integrated circuits

    E-Print Network [OSTI]

    Gazor, Mehdi (Seyed Mehdi)

    2005-01-01T23:59:59.000Z

    Integrated circuit design is limited by manufacturability. As devices scale down, sensitivity to process variation increases dramatically, making design for manufacturability a critical concern. Designers must identify the ...

  19. a block coordinate descent method for regularized multi-convex ...

    E-Print Network [OSTI]

    2012-09-07T23:59:59.000Z

    demonstrate superior performance in both speed and solution quality. .... the indicator function of convex set Di (equivalent to xi ? Di), (1.2c) reduces to xk.

  20. REGULAR PAPER Photosynthetic energy storage efficiency in Chlamydomonas

    E-Print Network [OSTI]

    - resolved photoacoustic (PA) instrument, we measured thermal dissipation and energy storage (ESREGULAR PAPER Photosynthetic energy storage efficiency in Chlamydomonas reinhardtii, based framework of two photosystems in all oxygenic photoautotrophs. Keywords Energy storage efficiency Á

  1. Wrinkling of Random and Regular Semiflexible Polymer Networks

    E-Print Network [OSTI]

    Pascal Müller; Jan Kierfeld

    2014-06-05T23:59:59.000Z

    We investigate wrinkling of two-dimensional random and triangular semiflexible polymer networks under shear. Both types of semiflexible networks exhibit wrinkling above a small critical shear angle, which scales with an exponent of the bending modulus between 1.9 and 2.0. Random networks exhibit hysteresis at the wrinkling threshold. Wrinkling lowers the total elastic energy by up to 20% and strongly affects the elastic properties of all semiflexible networks such as the crossover between bending and stretching dominated behavior. In random networks, we also find evidence for metastable wrinkled configurations. While the disordered microstructure of random networks affects the scaling behavior of wrinkle amplitudes, it has little effect on wrinkle wavelength. Therefore, wrinkles represent a robust, microstructure-independent assay of shear strain or elastic properties.

  2. Is the environmental Kuznets curve an empirical regularity?

    E-Print Network [OSTI]

    Deacon, Robert; Norman, Catherine S

    2004-01-01T23:59:59.000Z

    the Environmental Kuznets Curve: Turning a Black Box into aand Development: Is There a Kuznets Curve for Air Pollutionon the Environmental Kuznets Curve? ” Environment and

  3. Approximation-based Tree Regular Model-Checking

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    @lsv.ens-cachan.fr (c) LIFC, INRIA-CASSIS 16, route de Gray, 25030 Besançon, FRANCE olga of software systems is one of the most challenging research problems in computer aided verification

  4. Asymptotics and computations for approximation of method of regularization estimators

    E-Print Network [OSTI]

    Lee, Sang-Joon

    2005-08-29T23:59:59.000Z

    , 1973) and one-sided cross-validation (Hart and Yi, 1998) can be employed for the MOR estimator. Rice (1986) demonstrated that a reasonable choice of the smoothing parameter for making mean squared error small for estimating ? may not be reasonable... in terms of the estimation error incurred for f, and vice versa. O'Sullivan (1986) overviewed various issues in MOR estimation and the solution to ill-posed inverse problems with an extension of CV and related smoothing parameter selection criteria...

  5. iterative regularization in intensity-modulated radiation therapy ...

    E-Print Network [OSTI]

    2005-06-01T23:59:59.000Z

    †RaySearch Laboratories, Sveavägen 25, SE-111 34 Stockholm, Sweden; and Optimization and Systems. Theory .... effect the kernels have on x in the sense that high-frequency components in x are removed ..... [25] X. Sun and P. Xia. A new ...

  6. Daniela Tonon Some applications of the SBV Regularity Theorem

    E-Print Network [OSTI]

    Boyer, Edmond

    of entropy solutions of the scalar conservation law (1) tu + Dx(H(u)) = 0 in := (a, b), and proved () be an entropy solution of (??) with H C2 (R) locally uniformly convex. Then u belongs to SBVloc derivative of a viscosity solution of Hamilton-Jacobi equation (??) when H is C2 () and locally uniformly

  7. Stationarity and Regularity of Infinite Collections of Sets

    E-Print Network [OSTI]

    2012-02-20T23:59:59.000Z

    In Russian. 3. Kruger, A.Y., Mordukhovich, B.S.: Generalized normals and derivatives and necessary conditions for an extremum in problems of nondifferentiable ...

  8. REGULARITY OF MULTIFRACTAL SPECTRA OF CONFORMAL ITERATED FUNCTION SYSTEMS

    E-Print Network [OSTI]

    Kesseböhmer, Marc - Fachbereich 3

    to the following modified definition of the free energy function. Definition 1.1. Let CIFS(X) and : IN - R : P (t +) 0}. (1.3) Notice that our definition of the free energy function generalises the definition Section 2 for definitions). For IN we let |k := 1 ···k and |k := 1 ···k . Then for each

  9. Regularized Nonlinear Moving Horizon Observer for Detectable Systems

    E-Print Network [OSTI]

    Johansen, Tor Arne

    ], Alessandri et al. [2008] for different formulation relying on somewhat different assumptions. Such a moving

  10. Regularities in Learning Defect Predictors Burak Turhan, Ayse Bener

    E-Print Network [OSTI]

    Menzies, Tim

    estimation database [18]. There are many reasons for this, not the least being the business sensitivity

  11. Lecture 3: Languages and Regular Expres Basic concepts

    E-Print Network [OSTI]

    Golin, Mordecai J.

    closure). L \\Lambda = S 1 i=0 L i = fw 1 w 2 \\Delta \\Delta \\Deltaw n jn â?? 0; w 1 ; w 2 ; \\Delta \\Delta \\Delta ; w n 2 Lg. Note: ; \\Lambda = feg. ffl Plus (transitive closure). L + = S 1 i=1 L i : Question, is the number of symbols in w. ffl The empty word is the word of length 0 and is de­ noted by e. 1 #12

  12. Metastable Behavior for Bootstrap Percolation on Regular Trees

    E-Print Network [OSTI]

    Biskup, Marek; Schonmann, Roberto H.

    2009-01-01T23:59:59.000Z

    in three-dimensional bootstrap percolation. Ann. Probab. 6.regime of ?nite volume bootstrap percolation. Stoch.Leath, P.L. , Reich, G.R. : Bootstrap percolation on a Bethe

  13. REGULAR MODELS OF CERTAIN SHIMURA VARIETIES Michael Harris1

    E-Print Network [OSTI]

    Harris, Michael - Institut de Mathématiques de Jussieu, Université Paris 7

    we3+a*e1we2we3;p2:=1+e2+2*e1we2; :=p1 - +e1 2 e23 a e123 :=p2 + +1 e2 2 e12 > &t(p1,p2); Cliplus has

  14. Proximity inequalities for complete ideals in two-dimensional regular ...

    E-Print Network [OSTI]

    1910-30-30T23:59:59.000Z

    Partially supported by the National Security Agency. 1cf. ...... from Pv. Here Pv carries only a finite amount of information, because for large i, fi is of order one in

  15. REGULAR ARTICLE Hyperaccumulation of nickel by Alyssum corsicum

    E-Print Network [OSTI]

    Sparks, Donald L.

    mineral species Tiziana Centofanti & Matthew G. Siebecker & Rufus L. Chaney & Allen P. Davis & Donald L the Ni hyperaccumulator plant Alyssum cor- sicum possesses distinct extraction mechanisms for different concentration of Ni in solution and the plant transpiration rate. Keywords Ni minerals . Alyssum

  16. REGULAR ARTICLE Hyperaccumulation of nickel by Alyssum corsicum

    E-Print Network [OSTI]

    Sparks, Donald L.

    mineral species Tiziana Centofanti & Matthew G. Siebecker & Rufus L. Chaney & Allen P. Davis & Donald L- sicum possesses distinct extraction mechanisms for different Ni species present in soils. Different Ni and the plant transpiration rate. Keywords Ni minerals . Alyssum . Hyperaccumulators . Ni solubility

  17. An inexact interior point method for L1-regularized sparse ...

    E-Print Network [OSTI]

    2010-11-06T23:59:59.000Z

    There are many available statistical approaches, including the well .... away from interior-point methods to algorithms based on classical methods for convex ... of the proposed IIPM method for solving (6) rather than the theoretical efficiency.

  18. FONDECYT NATIONAL RESEARCH FUNDING COMPETITION 2009 REGULAR COMPETITION FFOONNDDEECCYYTT 22000099

    E-Print Network [OSTI]

    Vigny, Christophe

    Chilean $ (1000 CHP) Year 1 Year 2 Year 3 Year 4 Total Staff 10500 10500 10500 31500 Travel 2600 3850 3850/enterprises interested in the proposal results. Please attach certifying letters. INSTITUTION(S) CONTRIBUTION (1000 CHP

  19. REGULAR ARTICLE Proteomic analysis of hepatitis B virus-associated

    E-Print Network [OSTI]

    Tian, Weidong

    .proteomics-journal.de DOI 10.1002/pmic.200401141 #12;1126 C. Li et al. Proteomics 2005, 5, 1125­1139 and the United States of both underdeveloped and developing countries. The highest mor- tality rate is in China (34.7 cases per 105 people, the second leading cause of cancer deaths since 1990s) [1]. Its incidence in developed

  20. Energy of spherically symmetric spacetimes on regularizing teleparallelism

    E-Print Network [OSTI]

    G. G. L. Nashed

    2010-04-11T23:59:59.000Z

    We calculate the total energy of an exact spherically symmetric solutions, i.e., Schwarzschild and Reissner Nordstr$\\ddot{o}$m, using the gravitational energy-momentum 3-form within the tetrad formulation of general relativity. We explain how the effect of the inertial makes the total energy unphysical! Therefore, we use the covariant teleparallel approach which makes the energy always physical one. We also show that the inertial has no effect on the calculation of momentum.