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  1. Deputy Secretary Daniel Poneman USA Today Op-Ed September 13...

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

    Deputy Secretary Daniel Poneman USA Today Op-Ed September 13, 2011 Deputy Secretary Daniel Poneman USA Today Op-Ed September 13, 2011 PDF icon 091411Poneman USA Today op-ed.pdf...

  2. Secretary Chu's Op-Ed on Small Modular Reactors in the Wall Street Journal

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

    | Department of Energy Chu's Op-Ed on Small Modular Reactors in the Wall Street Journal Secretary Chu's Op-Ed on Small Modular Reactors in the Wall Street Journal March 23, 2010 - 12:24pm Addthis Washington, D.C. - Today, the Wall Street Journal published an op-ed by U.S. Secretary of Energy Steven Chu on small modular reactors. The op-ed can be found here. The text of the op-ed is below: Small modular reactors will expand the ways we use atomic power. By Steven Chu, Secretary of Energy Wall

  3. Secretary Chu's Weatherization Op-Ed in the Huffington Post | Department of

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

    Energy Weatherization Op-Ed in the Huffington Post Secretary Chu's Weatherization Op-Ed in the Huffington Post October 30, 2009 - 12:00am Addthis (Washington, DC) - Today, the Huffington Post Published an Op-Ed from U.S. Energy Secretary Chu in honor of National Weatherization Day. The text of the Op-ed is below: Weatherization: Saving Money by Saving Energy Published: October 30, 2009 in the Huffington Post I've always been a bit of an energy efficiency nut. I've made it my mission to cut

  4. Op-Ed by Secretary of Energy Steven Chu and Secretary of Labor Hilda Solis:

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

    Building the American Clean Energy Economy | Department of Energy Op-Ed by Secretary of Energy Steven Chu and Secretary of Labor Hilda Solis: Building the American Clean Energy Economy Op-Ed by Secretary of Energy Steven Chu and Secretary of Labor Hilda Solis: Building the American Clean Energy Economy April 22, 2009 - 12:00am Addthis To commemorate Earth Day, the op-ed below on green jobs and energy independence by Secretaries Steven Chu and Hilda Solis ran in the following papers yesterday

  5. Secretary Chu Op-Ed on Energy Efficiency from the World Economic...

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

    Washington, DC -- An op-ed by Secretary Steven Chu appears in a new report by the World Economic Forum and IHS Cambridge Energy Research Associates entitled "Energy Vision 2010: ...

  6. Op-Ed by Secretary of Energy Steven Chu and Secretary of Labor...

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

    April 22, 2009 - 12:00am Addthis To commemorate Earth Day, the op-ed below on green jobs and energy independence by Secretaries Steven Chu and Hilda Solis ran in the following ...

  7. Genome Data from DOOR: a Database for prOkaryotic OpeRons

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

    DOOR provides an Organism View for browsing, a gene search tool, an operon search tool, and the operon prediction interface.[Text taken and edited from http://csbl1.bmb.uga.edu/OperonDB/tutorial.php

  8. Secretary Chu Op-Ed on Small Modular Reactors in the Wall Street...

    Office of Environmental Management (EM)

    Countries such as China, South Korea and India have recognized this and are making investments in nuclear power that are driving demand for nuclear technologies. Our choice is ...

  9. Secretaries Chu and Clinton Praise Energy Cooperation Across the Americas

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

    in Joint Op-Ed | Department of Energy Clinton Praise Energy Cooperation Across the Americas in Joint Op-Ed Secretaries Chu and Clinton Praise Energy Cooperation Across the Americas in Joint Op-Ed April 16, 2010 - 12:00am Addthis Secretary of Energy Steven Chu and Secretary of State Hillary Rodham Clinton praised growing cooperation on energy and climate issues among the nations of the Western Hemisphere in an op-ed published today by the Miami Herald. Their piece also appeared in Spanish in

  10. ADVISORY: Blue Ribbon Commission on America's Nuclear Future to Hold 1st

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

    Meeting on Thursday and Friday Secretary Chu Op-Ed on Small Modular Reactors in the Wall Street Journal U.S. Secretary of Energy Steven Chu Washington, D.C. - Today, the Wall Street Journal published an op-ed by U.S. Secretary of Energy Steven Chu on small modular reactors. The op-ed can be found here. The text of the op-ed is below: America's New Nuclear Option Small modular reactors will expand the ways we use atomic power. By Steven Chu Wall Street Journal, March 23, 2010 America is on

  11. Preliminary Safety Design RM

    Office of Environmental Management (EM)

    Preliminary Safety Design Review Module March 2010 CD-0 O 0 OFFICE OF Pr C CD-1 F ENVIRO ... (CD) Ap CD March 2010 L MANAGE n (SRP) y Design e pplicability D-3 EMENT CD-4 Post Ope ...

  12. Seismic Design Expectations Report

    Office of Environmental Management (EM)

    March 2010 CD- This Rev of th Se -0 view Module w he overall Cons OFFICE O eismic De C ... CD-4 ldg. 3019 60% rned from this r ule. ) Post Ope design review review have be eration w ...

  13. Readiness Review RM

    Office of Environmental Management (EM)

    March 2010 CD-0 O 0 OFFICE OF C CD-1 F ENVIRO Standard R Readin Rev Critical Decis CD-2 M ... D-3 EMENT CD-4 Post Ope eration Standard Review Plan, 2 nd Edition, March 2010 i ...

  14. Category:OpenEI policies | Open Energy Information

    Open Energy Info (EERE)

    this category, out of 3 total. N OpenEI:Neutral point of view OpenEI:No original research V OpenEI:Verifiability Retrieved from "http:en.openei.orgwindex.php?titleCategory:Ope...

  15. A stereoscopic look into the bulk

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

    Czech, Bartlomiej; Lamprou, Lampros; McCandlish, Samuel; Mosk, Benjamin; Sully, James

    2016-07-26

    Here, we present the foundation for a holographic dictionary with depth perception. The dictionary consists of natural CFT operators whose duals are simple, diffeomorphisminvariant bulk operators. The CFT operators of interest are the “OPE blocks,” contributions to the OPE from a single conformal family. In holographic theories, we show that the OPE blocks are dual at leading order in 1/N to integrals of effective bulk fields along geodesics or homogeneous minimal surfaces in anti-de Sitter space. One widely studied example of an OPE block is the modular Hamiltonian, which is dual to the fluctuation in the area of a minimalmore » surface. Thus, our operators pave the way for generalizing the Ryu-Takayanagi relation to other bulk fields. Although the OPE blocks are non-local operators in the CFT, they admit a simple geometric description as fields in kinematic space — the space of pairs of CFT points. We develop the tools for constructing local bulk operators in terms of these non-local objects. The OPE blocks also allow for conceptually clean and technically simple derivations of many results known in the literature, including linearized Einstein’s equations and the relation between conformal blocks and geodesic Witten diagrams.« less

  16. Eikonalization of conformal blocks

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

    Fitzpatrick, A. Liam; Kaplan, Jared; Walters, Matthew T.; Wang, Junpu

    2015-09-03

    Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the 'eikonalization' of conformal blocks. We show that when an operator T appears in the OPE Ο(x)Ο(0), then the large spin Fock space states [TT···T]ℓ also appear in this OPE with a computable coefficient. The sum over the exchange of these Fock space states in an correlator build the classical 'T field' in the dual AdS description. In some limits the sum of all Fock spacemore » exchanges can be represented as the exponential of a single T exchange in the 4-pt correlator of O. Our results should be useful for systematizing 1/ℓ perturbation theory in general CFTs and simplifying the computation of large spin OPE coefficients. As examples we obtain the leading log ℓ dependence of Fock space conformal block coefficients, and we directly compute the OPE coefficients of the simplest ‘triple-trace’ operators.« less

  17. Eikonalization of conformal blocks

    SciTech Connect (OSTI)

    Fitzpatrick, A. Liam; Kaplan, Jared; Walters, Matthew T.; Wang, Junpu

    2015-09-03

    Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the 'eikonalization' of conformal blocks. We show that when an operator T appears in the OPE Ο(x)Ο(0), then the large spin Fock space states [TT···T] also appear in this OPE with a computable coefficient. The sum over the exchange of these Fock space states in an correlator build the classical 'T field' in the dual AdS description. In some limits the sum of all Fock space exchanges can be represented as the exponential of a single T exchange in the 4-pt correlator of O. Our results should be useful for systematizing 1/ℓ perturbation theory in general CFTs and simplifying the computation of large spin OPE coefficients. As examples we obtain the leading log ℓ dependence of Fock space conformal block coefficients, and we directly compute the OPE coefficients of the simplest ‘triple-trace’ operators.

  18. Locally-smeared operator product expansions

    SciTech Connect (OSTI)

    Monahan, Christopher; Orginos, Kostantinos

    2014-12-01

    We propose a "locally-smeared Operator Product Expansion" (sOPE) to decompose non-local operators in terms of a basis of locally-smeared operators. The sOPE formally connects nonperturbative matrix elements of smeared degrees of freedom, determined numerically using the gradient flow, to non-local operators in the continuum. The nonperturbative matrix elements do not suffer from power-divergent mixing on the lattice, provided the smearing scale is kept fixed in the continuum limit. The presence of this smearing scale prevents a simple connection to the standard operator product expansion and therefore requires the construction of a two-scale formalism. We demonstrate the feasibility of our approach using the example of real scalar field theory.

  19. News Item

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

    User Advocates for a New Era of Federal Funding for Nanoscience Ambika Bumb, CEO of Bikanta, published an Op-Ed in TechCrunch describing the benefits of federal investments in basic nanoscience research like those that support the Molecular Foundry. Dr. Bumb and her colleagues have used the Foundry to make and characterize her company's unique nanodiamonds for cancer detection and treatment. In her article, she takes a personal and national look at the technical and economic benefits tied to the

  20. Classification/Declassification of Government Documents | Department of

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

    Energy Services » Classification » Classification/Declassification of Government Documents Classification/Declassification of Government Documents BALANCING NATIONAL SECURITY WITH OPENESS DOE promotes the release of information assets to the maximum extent possible consistent at all times with our paramount concern for the security of our nation. Programs are established to review historical records scheduled for declassification, documents requested under statute or Executive Order,

  1. with multiple torsional modes and when there are

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

    multiple torsional modes and when there are hydrogen bonds formed for some of the geometries. The presence of hydrogen bonds particularly compli- cates things by coupling some of the other vibrational motions to the torsional motions. In particular, many of the bending frequencies become quite strongly de- pendent on the torsional geometry. Truhlar has devel- oped a method that treats this difficulty by explicitly considering the contributions from each of the differ- ent torsional minima. The

  2. 10 CFR Ch. III (1-1-11 Edition) Pt. 851, App. B

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

    2 10 CFR Ch. III (1-1-11 Edition) Pt. 851, App. B must meet the applicable electrical safety codes and standards referenced in § 851.23. 11. NANOTECHNOLOGY SAFETY-RESERVED The Department has chosen to reserve this section since policy and procedures for nano- technology safety are currently being devel- oped. Once these policies and procedures have been approved, the rule will be amended to include them through a rulemaking con- sistent with the Administrative Procedure Act. 12. WORKPLACE

  3. National Environmental Policy Act RM

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

    National Environmental Policy Act Review Module March 2010 CD- N -0 OFFICE O National E C CD-1 OF ENVIRO Standa Environm Rev Critical Deci CD-2 M ONMENTA ard Review mental P view Modul ision (CD) A C March 2010 AL MANAG Plan olicy Act le Applicability D-3 GEMENT t (NEPA) CD-4 ) Post Ope eration Standard Review Plan, 2 nd Edition, March 2010 i FOREWORD The Standard Review Plan (SRP) 1 provides a consistent, predictable corporate review framework to ensure that issues and risks that could

  4. ASC eNews Quarterly Newsletter September 2012 | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) September 2012 || Who's Who in ASC || ASC eNews POCs || Upcoming Events || ASC NA-ASC-500-12 Issue 21 September 2012 The Meisner Minute meisner Bob Meisner Guest editorial by Wendy Cieslak, ASC Program Director, Sandia National Laboratories Managing the Work-Work Balance In popular culture these days, you can't help but stumble across endless articles and op-ed pieces on work-life balance. Who has it, who doesn't, how to get it, and why it is important. But within ASC

  5. Summary - SRS Salt Waste Processing Facility

    Office of Environmental Management (EM)

    SRS Co DOE S Proces concen actinid in a se remov adjustm sorben sorben solutio passed separa stream extract sufficie separa (with S vitrifica (DWP Sr/acti federa assure and ha Critica The te (CTE) descrip Readin The Ele Site: S roject: S F Report Date: J ited States Why DOE omposite High Lev Savannah Rive ssing Facility (S ntrate targeted des) from High eries of unit ope ved by contactin ment) with a m nt in a batch m nt (containing S on by cross flow d to a solvent e ated to an aque m. The bulk

  6. Neutrino-pair bremsstrahlung from nucleon-nucleon scattering

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

    Li, Yi; Liou, M. K.; Schreiber, W. M.; Gibson, B. F.

    2015-07-22

    Background: Neutrino-pair bremsstrahlung processes from nucleon-nucleon scattering ???? (nnvv, ppvv, and npvv) have recently attracted attention in studies of neutrino emission in neutron stars, because of the implications for the neutron star cooling. The calculated ???? emissivities within the neutron star environment are relatively insensitive to the two-nucleon dynamical model used in the calculations, but differ significantly from those obtained using an OPE model. Purpose: To investigate the free ???? cross sections using a realistic nucleon-nucleon scattering amplitude, comparing the relative sizes of the cross sections for the three processes nnvv, ppvv, and npvv.

  7. http://doeintest/DOEXWEB/NEWS/PressReleases/PR080731-BodmanCong

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

    Congress Must Work Now (WT) By Samuel W. Bodman Washington Times, July 30, 2008 OP-ED The United States must come to terms with a new global energy reality that is not the result of any one event. It arises out of several decades of our inability to face the hard truths about how energy is produced and consumed and its impact on the environment. And it has an impact on the lives of every American, every day, the most obvious of which is the roughly $4 per gallon we are now paying for gasoline.

  8. Quality Assurance for Critical Decision Reviews RM

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

    Quality Assurance for Critical Decision Reviews Module March 2010 CD-0 O 0 OFFICE OF Q C CD-1 F ENVIRO Standard R Quality A Rev Critical Decis CD-2 M ONMENTAL Review Plan Assuranc view Module sion (CD) Ap CD March 2010 L MANAGE n (SRP) e (QA) e pplicability D-3 EMENT CD-4 Post Ope eration Standard Review Plan, 2 nd Edition, March 2010 i FOREWORD The Standard Review Plan (SRP) 1 provides a consistent, predictable corporate review framework to ensure that issues and risks that could challenge the

  9. "Ensuring Nuclear Power is Both Peaceful and Plentiful" | Department of

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

    Energy "Ensuring Nuclear Power is Both Peaceful and Plentiful" "Ensuring Nuclear Power is Both Peaceful and Plentiful" September 21, 2010 - 6:33pm Addthis Secretary Chu speaks at the International Atomic Energy Agency's 54th General Conference in Vienna. Secretary Chu speaks at the International Atomic Energy Agency's 54th General Conference in Vienna. John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Last week, Secretary Chu wrote an Op-Ed

  10. Technical Letter Report: Evaluation and Analysis of a Few International Periodic Safety Review Summary Reports

    SciTech Connect (OSTI)

    Chopra, Omesh K.; Diercks, Dwight R.; Ma, David Chia-Chiun; Garud, Yogendra S.

    2013-12-17

    At the request of the United States (U.S.) government, the International Atomic Energy Agency (IAEA) assembled a team of 20 senior safety experts to review the regulatory framework for the safety of operating nuclear power plants in the United States. This review focused on the effectiveness of the regulatory functions implemented by the NRC and on its commitment to nuclear safety and continuous improvement. One suggestion resulting from that review was that the U.S. Nuclear Regulatory Commission (NRC) incorporate lessons learned from periodic safety reviews (PSRs) performed in other countries as an input to the NRC’s assessment processes. In the U.S., commercial nuclear power plants (NPPs) are granted an initial 40-year operating license, which may be renewed for additional 20-year periods, subject to complying with regulatory requirements. The NRC has established a framework through its inspection, and operational experience processes to ensure the safe operation of licensed nuclear facilities on an ongoing basis. In contrast, most other countries do not impose a specific time limit on the operating licenses for NPPs, they instead require that the utility operating the plant perform PSRs, typically at approximately 10-year intervals, to assure continued safe operation until the next assessment. The staff contracted with Argonne National Laboratory (Argonne) to perform a pilot review of selected translated PSR assessment reports and related documentation from foreign nuclear regulatory authorities to identify any potential new regulatory insights regarding license renewal-related topics and NPP operating experience (OpE). A total of 14 PSR assessment documents from 9 countries were reviewed. For all of the countries except France, individual reports were provided for each of the plants reviewed. In the case of France, three reports were provided that reviewed the performance assessment of thirty-four 900-MWe reactors of similar design commissioned between 1978

  11. Measuring Human Performance within Computer Security Incident Response Teams

    SciTech Connect (OSTI)

    McClain, Jonathan T.; Silva, Austin Ray; Avina, Glory Emmanuel; Forsythe, James C.

    2015-09-01

    Human performance has become a pertinen t issue within cyber security. However, this research has been stymied by the limited availability of expert cyber security professionals. This is partly attributable to the ongoing workload faced by cyber security professionals, which is compound ed by the limited number of qualified personnel and turnover of p ersonnel across organizations. Additionally, it is difficult to conduct research, and particularly, openly published research, due to the sensitivity inherent to cyber ope rations at most orga nizations. As an alternative, the current research has focused on data collection during cyb er security training exercises. These events draw individuals with a range of knowledge and experience extending from seasoned professionals to recent college gradu ates to college students. The current paper describes research involving data collection at two separate cyber security exercises. This data collection involved multiple measures which included behavioral performance based on human - machine transactions and questionnaire - based assessments of cyber security experience.

  12. Neutrino-pair bremsstrahlung from nucleon-nucleon scattering

    SciTech Connect (OSTI)

    Li, Yi; Liou, M. K.; Schreiber, W. M.; Gibson, B. F.

    2015-07-22

    Background: Neutrino-pair bremsstrahlung processes from nucleon-nucleon scattering ΝΝνν¯ (nnvv¯, ppvv¯, and npvv¯) have recently attracted attention in studies of neutrino emission in neutron stars, because of the implications for the neutron star cooling. The calculated ΝΝνν¯ emissivities within the neutron star environment are relatively insensitive to the two-nucleon dynamical model used in the calculations, but differ significantly from those obtained using an OPE model. Purpose: To investigate the free ΝΝνν¯ cross sections using a realistic nucleon-nucleon scattering amplitude, comparing the relative sizes of the cross sections for the three processes nnvv¯, ppvv¯, and npvv¯.

  13. Development and application of microbial selective plugging processes

    SciTech Connect (OSTI)

    Jenneman, G.E.; Gevertz, D.; Davey, M.E.

    1995-12-31

    Phillips Petroleum Company recently completed a microbial selective plugging (MSP) pilot at the North Burbank Unit (NBU), Shidler, Oklahoma. Nutrients were selected for the pilot that could stimulate indigenous microflora in the reservoir brine to grow and produce exopolymer. It was found that soluble corn starch polymers (e.g., maltodextrins) stimulated the indigenous bacteria to produce exopolymer, whereas simple sugars (e.g., glucose and sucrose), as well as complex media (e.g., molasses and Nutrient Broth), did not. Injection of maltodextrin into rock cores in the presence of indigenous NBU bacteria resulted in stable permeability reductions (> 90%) across the entire length, while injection of glucose resulted only in face plugging. In addition, it was found that organic phosphate esters (OPE) served as a preferable source of phosphorus for the indigenous bacteria, since orthophosphates and condensed phosphates precipitated in NBU brine at reservoir temperature (45{degrees}C). Injection of maltodextrin and ethyl acid phosphate into a producing well stimulated an increase in maltodextrin utilizing bacteria (MUB) in the back-flowed, produced fluid. Additional screens of indigenous and nonindigenous bacteria yielded several nonindigenous isolates that could synthesize polymer when growing in brine containing 6% NaCl at 45{degrees}C.

  14. Using architecture information and real-time resource state to reduce power consumption and communication costs in parallel applications.

    SciTech Connect (OSTI)

    Brandt, James M.; Devine, Karen D.; Gentile, Ann C.; Leung, Vitus J.; Olivier, Stephen Lecler; Pedretti, Kevin; Rajamanickam, Sivasankaran; Bunde, David P.; Deveci, Mehmet; Catalyurek, Umit V.

    2014-09-01

    As computer systems grow in both size and complexity, the need for applications and run-time systems to adjust to their dynamic environment also grows. The goal of the RAAMP LDRD was to combine static architecture information and real-time system state with algorithms to conserve power, reduce communication costs, and avoid network contention. We devel- oped new data collection and aggregation tools to extract static hardware information (e.g., node/core hierarchy, network routing) as well as real-time performance data (e.g., CPU uti- lization, power consumption, memory bandwidth saturation, percentage of used bandwidth, number of network stalls). We created application interfaces that allowed this data to be used easily by algorithms. Finally, we demonstrated the benefit of integrating system and application information for two use cases. The first used real-time power consumption and memory bandwidth saturation data to throttle concurrency to save power without increasing application execution time. The second used static or real-time network traffic information to reduce or avoid network congestion by remapping MPI tasks to allocated processors. Results from our work are summarized in this report; more details are available in our publications [2, 6, 14, 16, 22, 29, 38, 44, 51, 54].

  15. High-energy amplitudes in N = 4 SYM in the next-to-leading order

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

    Chirilli, Giovanni; Balitsky, Ian

    2010-03-16

    In this study, the high-energy behavior of the N = 4 SYM amplitudes in the Regge limit can be calculated order by order in perturbation theory using the high-energy operator expansion in Wilson lines. At large $N_c$, a typical four-point amplitude is determined by a single BFKL pomeron. The conformal structure of the four-point amplitude is fixed in terms of two functions: pomeron intercept and the coefficient function in front of the pomeron (the product of two residues). The pomeron intercept is universal while the coefficient function depends on the correlator in question. The intercept is known in the firstmore » two orders in coupling constant: BFKL intercept and NLO BFKL intercept calculated in Ref. 1. As an example of using the Wilson-line OPE, we calculate the coefficient function in front of the pomeron for the correlator of four $Z^2$ currents in the first two orders in perturbation theory.« less

  16. A Natural Language for AdS/CFT Correlators

    SciTech Connect (OSTI)

    Fitzpatrick, A.Liam; Kaplan, Jared; Penedones, Joao; Raju, Suvrat; van Rees, Balt C.; /YITP, Stony Brook

    2012-02-14

    We provide dramatic evidence that 'Mellin space' is the natural home for correlation functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have poles corresponding to an OPE decomposition into 'left' and 'right' sub-correlators, in direct analogy with the factorization channels of scattering amplitudes. In the regime where these correlators can be computed by tree level Witten diagrams in AdS, we derive an explicit formula for the residues of Mellin amplitudes at the corresponding factorization poles, and we use the conformal Casimir to show that these amplitudes obey algebraic finite difference equations. By analyzing the recursive structure of our factorization formula we obtain simple diagrammatic rules for the construction of Mellin amplitudes corresponding to tree-level Witten diagrams in any bulk scalar theory. We prove the diagrammatic rules using our finite difference equations. Finally, we show that our factorization formula and our diagrammatic rules morph into the flat space S-Matrix of the bulk theory, reproducing the usual Feynman rules, when we take the flat space limit of AdS/CFT. Throughout we emphasize a deep analogy with the properties of flat space scattering amplitudes in momentum space, which suggests that the Mellin amplitude may provide a holographic definition of the flat space S-Matrix.

  17. Carbon-carbon bond cleavage of 1,2-hydroxy ethers b7 vanadium(V) dipicolinate complexes

    SciTech Connect (OSTI)

    Hanson, Susan K; Gordon, John C; Thorn, David L; Scott, Brian L; Baker, R Tom

    2009-01-01

    ), 2-phenoxyethanol (B), and 1,2-diphenyl-2-methoxyethanol (C) (Figure 1). Reaction of (dipic)V{sup V}(O)O{sup i}Pr (1a) or (dipic)V{sup v}(O)OEt (lb) with A, B, or C in acetonitrile yielded new vanadium(V) complexes where the alcohol-ether ligand was bound in a chelating fashion. From the reaction of 1b with pinacol monomethyl ether (A) in acetonitrile solution, (dipic)V{sup v}(O)(pinOMe) (2) (PinOMe = 2,3-dimethyl-3-methoxy-2-butanoxide) was isolated in 61 % yield. Reaction of 1b with 2-phenoxyethanol (B) in acetonitrile gave the new complex (dipic)V{sup v}(O)(OPE) (3) (OPE = 2-phenoxyethoxide), which was isolated in 76% yield. In a similar fashion, 1a reacted with 1,2-diphenyl-2-methoxyethanol (C) to give (dipic)V(O)(DPME) (4) (DPME = 1,2-diphenyl-2-methoxyethoxide), which was isolated in 39% yield. Complexes 2, 3, and 4 were characterized by {sup 1}H NMR and IR spectroscopy, elemental analysis, and X-ray crystallography. Compared to the previously reported vanadium(V) pinacolate complex (dipic)V(O)(pinOH) the X-ray structure of complex 2 reveals a slightly shorter V = O bond, 1.573(2) {angstrom} vs 1.588(2) {angstrom} for the pinOH structure. Complexes 3 and 4 display similar vanadium oxo bond distances of 1.568(2) {angstrom} and 1.576(2) {angstrom}, respectively. All three complexes show longer bonds to the ether-oxygen trans to the oxo (2.388(2) {angstrom} for 2, 2.547(2) {angstrom} for 3, and 2.438(2) {angstrom} for 4) than to the hydroxy-oxygen in the pinOH structure (2.252(2) {angstrom}).

  18. Earth System Grid Center for Enabling Technologies (ESG-CET): A Data Infrastructure for Data-Intensive Climate Research

    SciTech Connect (OSTI)

    Williams, Dean N.

    2011-06-03

    For the Earth System Grid Federation (ESGF), the ESG-CET team has led international development and delivered a production environment for managing and accessing ultrascale climate data. This production environment includes multiple national and international climate projects (e.g., Couple Model Intercomparison Project, Community Earth System Model), ocean model data (such as the Parallel Ocean Program), observation data (Carbon Dioxide Information and Analysis Center, Atmospheric Infrared Sounder, and so forth), and analysis and visualization tools, all of which serve a diverse community of users. These data holdings and services are distributed across multiple ESG-CET sites (such as LANL, LBNL, LLNL, NCAR, and ORNL) as well as at unfunded partners sites such as the Australian National University National Computational Infrastructure, the British Atmospheric Data Centre, the National Oceanic and Atmospheric Administration Geophysical Fluid Dynamics Laboratory, the Max Planck Institute for Meteorology, the German Climate Computing Centre, and the National Aeronautics and Space Administration Jet Propulsion Laboratory. More recently, ESG-CET has been extending services beyond data-file access and delivery to develop more detailed information products (scientific graphics, animations, etc.), secure binary data-access services (based upon the OPeNDAP protocol), and server-side analysis capabilities. These will allow users to request data subsets transformed through commonly used analysis and intercomparison procedures. As we transition from development activities to production and operations, the ESG-CET team is tasked with making data available to all users seeking to understand, process, extract value from, visualize, and/or communicate it to others. This ongoing effort, though daunting in scope and complexity, will greatly magnify the value of numerical climate model outputs and climate observations for future national and international climate-assessment reports

  19. Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

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

    Osipenko, M.

    2010-06-01

    We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W ≈ 2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5 GeV2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as wellmore » as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainites, to be smaller with respect to the deuteron case for n < 7, suggesting partial parton deconfinement in nuclear matter. Lastly, we speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.« less

  20. Real-Time Control of Diesel Combustion Quality

    SciTech Connect (OSTI)

    Wagner, R.M.; Sisken, K

    2010-06-30

    Detroit Diesel Corporation (DDC) and ORNL established this CRADA to improve heavy-duty engine efficiency with reduced emissions at relatively extreme operating regimes such has high EGR, low-load, and cold-start, with an emphasis on the application of advanced control strategies. The approach used in this collaborative effort was to include the application of novel analysis and modeling techniques devel-oped from the application of nonlinear dynamics and chaos theory. More specifically, analytical tech-niques derived from these theories were to used to detect, characterize, and control the combustion insta-bilities that are responsible for poor combustion performance and corresponding high emissions. The foundation of this CRADA was established based on ORNL expertise on the fundamentals of ad-vanced combustion operation and experience with nonlinear dynamics and controls in combustion sys-tems. The initial plan was all data generation would be performed at DDC with an agreed upon experi-mental plan formed by both organizations. While numerous experiments were performed at DDC and the data was exchanged with ORNL researchers, the team decided to transfer an engine to ORNL to allow more flexibility and data generation opportunities. A prototype DDC Series 60 with a common rail fuel system was selected and installed at ORNL. DDC and ORNL maintained a strong collaboration throughout much of this project. Direct funding from DOE ended in 2004 and DDC continued to fund at a reduced amount through 2007. This CRADA has not been funded in more recent years but has been maintained active in anticipation of restored funding. This CRADA has led to additional collaborations between DDC and ORNL.

  1. DOE SciDAC’s Earth System Grid Center for Enabling Technologies Final Report for University of Southern California Information Sciences Institute

    SciTech Connect (OSTI)

    Chervenak, Ann Louise

    2013-12-19

    Centre, the National Aeronautics and Space Administration Jet Propulsion Laboratory, and the National Oceanic and Atmospheric Administration. The ESGF software is distinguished from other collaborative knowledge systems in the climate community by its widespread adoption, federation capabilities, and broad developer base. It is the leading source for present climate data holdings, including the most important and largest data sets in the globalclimate community, and—assuming its development continues—we expect it to be the leading source for future climate data holdings as well. Recently, ESG-CET extended its services beyond data-file access and delivery to include more detailed information products (scientific graphics, animations, etc.), secure binary data-access services (based upon the OPeNDAP Data Access Protocol), and server-side analysis. The latter capabilities allow users to request data subsets transformed through commonly used analysis and intercomparison procedures. As we transition from development activities to production and operations, the ESG-CET team is tasked with making data available to all users seeking to understand, process, extract value from, visualize, and/or communicate it to others—this is of course if funding continues at some level. This ongoing effort, though daunting in scope and complexity, would greatly magnify the value of numerical climate model outputs and climate observations for future national and international climate-assessment reports. The ESG-CET team also faces substantial technical challenges due to the rapidly increasing scale of climate simulation and observational data, which will grow, for example, from less than 50 terabytes for the last Intergovernmental Panel on Climate Change (IPCC) assessment to multiple Petabytes for the next IPCC assessment. In a world of exponential technological change and rapidly growing sophistication in climate data analysis, an infrastructure such as ESGF must constantly evolve if it

  2. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2.

    SciTech Connect (OSTI)

    Thornton, Peter E; Thornton, Michele M; Mayer, Benjamin W; Wilhelmi, Nate; Wei, Yaxing; Devarakonda, Ranjeet; Cook, Robert B

    2014-01-01

    spreadsheet or other data analysis software. The Single Pixel Data Extraction Tool also provides the option to download multiple coordinates programmatically. A multiple extractor script is freely available to download at http://daymet.ornl.gov/files/daymet.zip. The ORNL DAAC s THREDDS data server (TDS) provides customized visualization and access to Daymet time series of North American mosaics. Users can subset and download Daymet data via a variety of community standards, including OPeNDAP, NetCDF Subset service, and Open Geospatial Consortium (OGC) Web Map/Coverage Service. The ORNL DAAC TDS also exposes Daymet metadata through its ncISO service to facilitate harvesting Daymet metadata records into 3rd party catalogs. References: [1] Thornton, P.E., M.M. Thornton, B.W. Mayer, N. Wilhelmi, Y. Wei, R. Devarakonda, and R.B. Cook. 2014. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA. [2] Devarakonda R., et al. 2012. Daymet: Single Pixel Data Extraction Tool. Available on-line [http://daymet.ornl.go/singlepixel.html]. [3] Wei Y., et al. 2014. Daymet: Thematic Real-time Environmental Data Services. Available on-line [http://daymet.ornl.gov/thredds_tiles.html].

  3. DOE SciDAC's Earth System Grid Center for Enabling Technologies Final Report

    SciTech Connect (OSTI)

    Williams, Dean N.

    2011-09-27

    Centre, the National Aeronautics and Space Administration Jet Propulsion Laboratory, and the National Oceanic and Atmospheric Administration. The ESGF software is distinguished from other collaborative knowledge systems in the climate community by its widespread adoption, federation capabilities, and broad developer base. It is the leading source for present climate data holdings, including the most important and largest data sets in the global-climate community, and - assuming its development continues - we expect it to be the leading source for future climate data holdings as well. Recently, ESG-CET extended its services beyond data-file access and delivery to include more detailed information products (scientific graphics, animations, etc.), secure binary data-access services (based upon the OPeNDAP protocol), and server-side analysis. The latter capabilities allow users to request data subsets transformed through commonly used analysis and intercomparison procedures. As we transition from development activities to production and operations, the ESG-CET team is tasked with making data available to all users seeking to understand, process, extract value from, visualize, and/or communicate it to others. This ongoing effort, though daunting in scope and complexity, will greatly magnify the value of numerical climate model outputs and climate observations for future national and international climate-assessment reports. The ESG-CET team also faces substantial technical challenges due to the rapidly increasing scale of climate simulation and observational data, which will grow, for example, from less than 50 terabytes for the last Intergovernmental Panel on Climate Change (IPCC) assessment to multiple Petabytes for the next IPCC assessment. In a world of exponential technological change and rapidly growing sophistication in climate data analysis, an infrastructure such as ESGF must constantly evolve if it is to remain relevant and useful. Regretfully, we submit our final