Cardoso-Neto, J.E.; Williams, D.W.
1995-01-01T23:59:59.000Z
A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.
Cardoso-Neto, Joao E. (North Augusta, SC); Williams, Daniel W. (Aiken, SC)
1996-01-01T23:59:59.000Z
A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.
Selective purge for hydrogenation reactor recycle loop
Baker, Richard W. (Palo Alto, CA); Lokhandwala, Kaaeid A. (Union City, CA)
2001-01-01T23:59:59.000Z
Processes and apparatus for providing improved contaminant removal and hydrogen recovery in hydrogenation reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in the hydrogenation reactor recycle loop or purge stream across membranes selective in favor of the contaminant over hydrogen.
Coal slurry fuel supply and purge system
McDowell, Robert E. (Fairview, PA); Basic, Steven L. (Hornell, NY); Smith, Russel M. (North East, PA)
1994-01-01T23:59:59.000Z
A coal slurry fuel supply and purge system for a locomotive engines is disclosed which includes a slurry recirculation path, a stand-by path for circulating slurry during idle or states of the engine when slurry fuel in not required by the engine, and an engine header fluid path connected to the stand-by path, for supplying and purging slurry fuel to and from fuel injectors. A controller controls the actuation of valves to facilitate supply and purge of slurry to and from the fuel injectors. A method for supplying and purging coal slurry in a compression ignition engine is disclosed which includes controlling fluid flow devices and valves in a plurality of fluid paths to facilitate continuous slurry recirculation and supply and purge of or slurry based on the operating state of the engine.
Well purge and sample apparatus and method
Schalla, R.; Smith, R.M.; Hall, S.H.; Smart, J.E.; Gustafson, G.S.
1995-10-24T23:59:59.000Z
The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion. 8 figs.
Well purge and sample apparatus and method
Schalla, Ronald (Kennewick, WA); Smith, Ronald M. (Richland, WA); Hall, Stephen H. (Kennewick, WA); Smart, John E. (Richland, WA); Gustafson, Gregg S. (Redmond, WA)
1995-01-01T23:59:59.000Z
The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion.
Oliver, Douglas L.
Purging the Task Pump on the 800 Cold Probe Occasionally the task pump in the 800 cryobay will not pull a sufficient vacuum to start the cold probe. When this happens the pump may need to have a N2 panels off the cryobay and place somewhere safe Â· Make sure the task pump is off. If it is still running
Sebastiano Carpi; Robin Hillier; Yasuyuki Kawahigashi; Roberto Longo; Feng Xu
2014-11-21T23:59:59.000Z
We provide an Operator Algebraic approach to N=2 chiral Conformal Field Theory and set up the Noncommutative Geometric framework. Compared to the N=1 case, the structure here is much richer. There are naturally associated nets of spectral triples and the JLO cocycles separate the Ramond sectors. We construct the N=2 superconformal nets of von Neumann algebras in general, classify them in the discrete series cnets with cnet representations.
Fusion rules for N=2 superconformal modules
Minoru Wakimoto
1998-07-22T23:59:59.000Z
In this note we calculate the fusion coefficients for minimal series representations of the N=2 superconformal algebra by using a modified Verlinde's formula, and obtain associative and commutative fusion algebras with non-negative integral fusion coefficients at each level. Some references are added.
ATR/OTR-SY Tank Camera Purge System and in Tank Color Video Imaging System
Werry, S.M.
1995-06-06T23:59:59.000Z
This procedure will document the satisfactory operation of the 101-SY tank Camera Purge System (CPS) and 101-SY in tank Color Camera Video Imaging System (CCVIS). Included in the CPRS is the nitrogen purging system safety interlock which shuts down all the color video imaging system electronics within the 101-SY tank vapor space during loss of nitrogen purge pressure.
New technology for purging the steam generators of nuclear power plants
Budko, I. O.; Kutdjusov, Yu. F.; Gorburov, V. I. [Scientific-Research Center for Energy Technology 'NICE Centrenergo' (Russian Federation); Rjasnyj, S. I. [JSC 'The All-Rissia Nuklear Power Engineering Research and Development Institute' (VNIIAM) (Russian Federation)
2011-07-15T23:59:59.000Z
A technology for removal of undissolved impurities from a horizontal steam generator using purge water is developed on the basis of a theoretical analysis. A purge with a maximal flow rate is drawn off from the zone with the highest accumulation of sludge in the lower part of the steam generator after the main circulation pump of the corresponding loop is shut off and the temperatures of the heat transfer medium at the inlet and outlet of the steam generator have equilibrated. An improved purge configuration is used for this technology; it employs shutoff and regulator valves, periodic purge lines separated by a cutoff fixture, and a D{sub y} 100 drain union as a connector for the periodic purge. Field tests show that the efficiency of this technology for sludge removal by purge water is several times that for the standard method.
Purged window apparatus. [On-line spectroscopic analysis of gas flow systems
Ballard, E.O.
1982-04-05T23:59:59.000Z
A purged window apparatus is described which utilizes tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube thereby preventing backstreaming of flowing gases under investigation in a chamber to which a plurality of similar purged apparatus is attached with the consequent result that spectroscopic analyses can be undertaken for lengthy periods without the necessity of interrupting the flow for cleaning or replacing the windows due to contamination.
Purge gas protected transportable pressurized fuel cell modules and their operation in a power plant
Zafred, P.R.; Dederer, J.T.; Gillett, J.E.; Basel, R.A.; Antenucci, A.B.
1996-11-12T23:59:59.000Z
A fuel cell generator apparatus and method of its operation involves: passing pressurized oxidant gas and pressurized fuel gas into modules containing fuel cells, where the modules are each enclosed by a module housing surrounded by an axially elongated pressure vessel, and where there is a purge gas volume between the module housing and pressure vessel; passing pressurized purge gas through the purge gas volume to dilute any unreacted fuel gas from the modules; and passing exhaust gas and circulated purge gas and any unreacted fuel gas out of the pressure vessel; where the fuel cell generator apparatus is transportable when the pressure vessel is horizontally disposed, providing a low center of gravity. 11 figs.
Purge gas protected transportable pressurized fuel cell modules and their operation in a power plant
Zafred, Paolo R. (Pittsburgh, PA); Dederer, Jeffrey T. (Valencia, PA); Gillett, James E. (Greensburg, PA); Basel, Richard A. (Plub Borough, PA); Antenucci, Annette B. (Pittsburgh, PA)
1996-01-01T23:59:59.000Z
A fuel cell generator apparatus and method of its operation involves: passing pressurized oxidant gas, (O) and pressurized fuel gas, (F), into fuel cell modules, (10 and 12), containing fuel cells, where the modules are each enclosed by a module housing (18), surrounded by an axially elongated pressure vessel (64), where there is a purge gas volume, (62), between the module housing and pressure vessel; passing pressurized purge gas, (P), through the purge gas volume, (62), to dilute any unreacted fuel gas from the modules; and passing exhaust gas, (82), and circulated purge gas and any unreacted fuel gas out of the pressure vessel; where the fuel cell generator apparatus is transpatable when the pressure vessel (64) is horizontally disposed, providing a low center of gravity.
Characterization of BCl3/N-2 plasmas
Sia, S. F.
2003-08-15T23:59:59.000Z
Optical emission spectroscopy, quadrupole mass spectrometry, and electron density measurements were used to study the effect of the percentage of N-2 on the characteristics of BCl3/N-2 plasmas and their resulting etch ...
deMenocal, Peter B.
purging signal Caroline ClÃ©roux a,*, Peter deMenocal a , Thomas Guilderson b,c a Lamont-Doherty Earth of the atmospheric CO2 increase during the Glacial to Holocene climate transition requires the outgassing of a deep production changes alone (Hughen et al., 2006). These two steps in atmospheric CO2 and radiocarbon anomalies
Larson, I. Lauren (Oak Ridge, TN); Chiles, Marion M. (Knoxville, TN); Miller, V. Clint (Concord, TN)
1993-01-01T23:59:59.000Z
Disclosed herein is a radiation detector providing for the in situ automatic sampling of fluids containing substances emitting radiation, especially Cerenkov radiation. The detector permits sampling within well casings and is self-purging such that no additional provisions must be established for the storage and disposal of contaminated fluids.
N=2 supersymmetric Pais-Uhlenbeck oscillator
Ivan Masterov
2015-03-12T23:59:59.000Z
We construct an N=2 supersymmetric extension of the Pais-Uhlenbeck oscillator for distinct frequencies of oscillation. A link to a set of decoupled N=2 supersymmetric harmonic oscillators with alternating sign in the Hamiltonian is introduced. Symmetries of the model are discussed in detail. The investigation of a quantum counterpart of the constructed model shows that the corresponding Fock space contains negative norm states and the energy spectrum of the system is unbounded from below.
Cryogenic system with GM cryocooler for krypton, xenon separation from hydrogen-helium purge gas
Chu, X. X.; Zhang, D. X.; Qian, Y.; Liu, W. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 (China); Zhang, M. M.; Xu, D. [Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 (China)
2014-01-29T23:59:59.000Z
In the thorium molten salt reactor (TMSR), fission products such as krypton, xenon and tritium will be produced continuously in the process of nuclear fission reaction. A cryogenic system with a two stage GM cryocooler was designed to separate Kr, Xe, and H{sub 2} from helium purge gas. The temperatures of two stage heat exchanger condensation tanks were maintained at about 38 K and 4.5 K, respectively. The main fluid parameters of heat transfer were confirmed, and the structural heat exchanger equipment and cold box were designed. Designed concentrations after cryogenic separation of Kr, Xe and H{sub 2} in helium recycle gas are less than 1 ppb.
The ${\\mathcal N}=2$ superconformal bootstrap
Christopher Beem; Madalena Lemos; Pedro Liendo; Leonardo Rastelli; Balt C. van Rees
2014-12-23T23:59:59.000Z
In this work we initiate the conformal bootstrap program for ${\\mathcal N}=2$ superconformal field theories in four dimensions. We promote an abstract operator-algebraic viewpoint in order to unify the description of Lagrangian and non-Lagrangian theories, and formulate various conjectures concerning the landscape of theories. We analyze in detail the four-point functions of flavor symmetry current multiplets and of ${\\mathcal N}=2$ chiral operators. For both correlation functions we review the solution of the superconformal Ward identities and describe their superconformal block decompositions. This provides the foundation for an extensive numerical analysis discussed in the second half of the paper. We find a large number of constraints for operator dimensions, OPE coefficients, and central charges that must hold for any ${\\mathcal N}=2$ superconformal field theory.
Critical phenomena in N=2* plasma
A. Buchel; C. Pagnutti
2010-10-16T23:59:59.000Z
We use gauge theory/string theory correspondence to study finite temperature critical behaviour of mass deformed N=4 SU(N) supersymmetric Yang-Mills theory at strong coupling, also known as N=2* gauge theory. For certain range of the mass parameters, N=2* plasma undergoes a second-order phase transition. We compute all the static critical exponents of the model and demonstrate that the transition is of the mean-field theory type. We show that the dynamical critical exponent of the model is z=0, with multiple hydrodynamic relaxation rates at criticality. We point out that the dynamical critical phenomena in N=2* plasma is outside the dynamical universality classes established by Hohenberg and Halperin.
TNKVNT: A model of the Tank 48 purge/ventilation exhaust system. Revision 1
Shadday, M.A. Jr.
1996-04-01T23:59:59.000Z
The waste tank purge ventilation system for Tank 48 is designed to prevent dangerous concentrations of hydrogen or benzene from accumulating in the gas space of the tank. Fans pull the gas/water vapor mixture from the tank gas space and pass it sequentially through a demister, a condenser, a reheater, and HEPA filters before discharging to the environment. Proper operation of the HEPA filters requires that the gas mixture passing through them has a low relative humidity. The ventilation system has been modified by increasing the capacity of the fans and changing the condenser from a two-pass heat exchanger to a single-pass heat exchanger. It is important to understand the impact of these modifications on the operation of the system. A hydraulic model of the ventilation exhaust system has been developed. This model predicts the properties of the air throughout the system and the flowrate through the system, as functions of the tank gas space and environmental conditions. This document serves as a Software Design Report, a Software Coding report, and a User`s Manual. All of the information required for understanding and using this code is herein contained: the governing equations are fully developed, the numerical algorithms are described in detail, and an extensively commented code listing is included. This updated version of the code models the entire purge ventilation system, and is therefore more general in its potential applications.
ARD, K.E.
2000-04-19T23:59:59.000Z
This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.
PLANE-LIKE MINIMAL SURFACES IN PERIODIC MEDIA WITH ...
SIAM (#1) 1035 2001 Apr 10 12:32:38
2004-07-28T23:59:59.000Z
Key words. minimal surfaces, sets of finite perimeter, homogenization, .... troduce a particular example, and we perform several explicit computations in search .... E minimizes area outside the exclusions, it follows from Lemma A.5 that if x ? K ...... It is an easy exercise to check that, for n = 2, minimizers must enter the ...
Spent nuclear fuel project cold vacuum drying facility vacuum and purge system design description
IRWIN, J.J.
1998-11-30T23:59:59.000Z
This document provides the System Design Description (SDD) for the Cold Vacuum Drying Facility (CVDF) Vacuum and Purge System (VPS) . The SDD was developed in conjunction with HNF-SD-SNF-SAR-O02, Safety Analysis Report for the Cold Vacuum Drying Facility, Phase 2, Supporting Installation of Processing Systems (Garvin 1998), The HNF-SD-SNF-DRD-002, 1998, Cold Vacuum Drying Facility Design Requirements, and the CVDF Design Summary Report. The SDD contains general descriptions of the VPS equipment, the system functions, requirements and interfaces. The SDD provides references for design and fabrication details, operation sequences and maintenance. This SDD has been developed for the SNFP Operations Organization and shall be updated, expanded, and revised in accordance with future design, construction and startup phases of the CVDF until the CVDF final ORR is approved.
Alex Buchel; Chris Pagnutti
2009-03-02T23:59:59.000Z
We use gauge theory/string theory correspondence to study the bulk viscosity of strongly coupled, mass deformed SU(N_c) N=4 supersymmetric Yang-Mills plasma, also known as N=2^* gauge theory. For a wide range of masses we confirm the bulk viscosity bound proposed in arXiv:0708.3459. For a certain choice of masses, the theory undergoes a phase transition with divergent specific heat c_V ~ |1-T_c/T|^(-1/2). We show that, although bulk viscosity rapidly grows as T -> T_c, it remains finite in the vicinity of the critical point.
Bud'ko, I. O. [JSC NIITsE 'Tsentrenergo' (Russian Federation)] [JSC NIITsE 'Tsentrenergo' (Russian Federation); Zhukov, A. G. [Rostov Nuclear Power Plant (Russian Federation)] [Rostov Nuclear Power Plant (Russian Federation)
2013-11-15T23:59:59.000Z
An experimental technology for the removal of insoluble impurities from a horizontal steam generator with purge water during planned shutdowns of the power generating unit is improved through a more representative determination of the concentration of impurities in the purge water ahead of the water cleanup facility and a more precise effective time for the duration of the purge process. Tests with the improved technique at power generating unit No. 1 of the Rostov Nuclear Power Plant show that the efficiency with which insoluble impurities are removed from the steam generator volume was more than two orders of magnitude greater than under the standard regulations.
2, 779827, 2005 Inventories of N2O
Paris-Sud XI, UniversitÃ© de
BGD 2, 779Â827, 2005 Inventories of N2O and NO emissions from European forest soils M. Kesik et al Biogeosciences Discussions is the access reviewed discussion forum of Biogeosciences Inventories of N2O Inventories of N2O and NO emissions from European forest soils M. Kesik et al. Title Page Abstract
Hartwell, J.K.; Mandler, J.W.; Duce, S.W.; Motes, B.G.
1981-05-01T23:59:59.000Z
The Three Mile Island Unit-2 reactor building atmosphere was sampled prior to the reactor building purge. Samples of the containment atmosphere were obtained using specialized sampling equipment installed through penetration R-626 at the 358-foot (109-meter) level of the TMI-2 reactor building. The samples were subsequently analyzed for radionuclide concentration and for gaseous molecular components (O/sub 2/, N/sub 2/, etc.) by two independent laboratories at the Idaho National Engineering Laboratory (INEL). The sampling procedures, analysis methods, and results are summarized.
Lean NOx Trap Regeneration Selectivity Towards N2O -- Similarities...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
exhaust temperatures, N2O is emitted in two peaks. This presentation uses a global model for the primary and secondary peaks to explain the chemical reactions....
Introduction Minimal Fusion Systems
ThÃ©venaz, Jacques
Introduction Minimal Fusion Systems Maximal Parabolics Results Minimal Fusion Systems Ellen Henke University of Birmingham Ellen Henke Minimal Fusion Systems #12;Introduction Minimal Fusion Systems Maximal Parabolics Results Contents 1 Introduction 2 Minimal Fusion Systems 3 Maximal Parabolics 4 Results Ellen
Physisorption of N2, O2, and CO on Fully Oxidized TiO2(110)
Dohnalek, Zdenek; Kim, Jooho; Bondarchuk, Oleksander A.; White, J. M.; Kay, Bruce D.
2006-03-30T23:59:59.000Z
Physisorption of N2, O2 and CO was studied on fully oxidized TiO2(110) using beam reflection and temperature programmed desorption (TPD) techniques. Sticking coefficients for all three molecules are nearly equal (0.75 ± 0.05) and approximately independent of coverage suggesting that adsorption occurs via a precursor mediated mechanism. Excluding multilayer coverages, the TPD spectra for all three adsorbates exhibit three distinct coverage regimes that can be interpreted in accord with previous theoretical studies of N2 adsorption. At low coverages (0 to 0.5 N2/Ti4+), N2 molecules bind head-on to five-coordinated Ti4+ ions. The adsorption occurs preferentially on the Ti4+ sites that do not have neighboring adsorbates. This arrangement minimizes the repulsive interactions between the adsorbed molecules along the Ti4+ rows resulting in a relatively small shift of the TPD peak (105 ? 90 K) with increasing coverage. At higher N2 coverages (0 to 1.0 N2/Ti4+) the nearest-neighbor Ti4+ sites become occupied. The close proximity of the adsorbates results in strong repulsion thus giving rise to a significant shift of the TPD leading edges (90 ? 45 K) with increasing coverage. For N2/Ti4+ > 1, an additional low temperature peak (~ 43 K) is present and is ascribed to N2 adsorption on bridge-bonded oxygen rows. The results for O2 and CO are qualitatively similar. The repulsive adsorbate-adsorbate interactions largest for CO, most likely due to aligned CO dipole moments. The coverage dependent binding energies of O2, N2, and CO are determined by inverting TPD profiles.
Unexpected Nondissociative Binding of N2O on Oxygen Vacancies...
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Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-1×1 . Unexpected Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-1×1 ....
N=2 superconformal symmetry in super coset models
Creutzig, Thomas; Roenne, Peter B.; Schomerus, Volker [DESY Theory Group, DESY Hamburg, Notkestrasse 85, D-22603 Hamburg (Germany)
2009-09-15T23:59:59.000Z
We extend the Kazama-Suzuki construction of models with N=(2,2) world-sheet supersymmetry to cosets S/K of supergroups. Among the admissible target spaces that allow for an extension to N=2 superconformal algebras are some simple Lie supergroups, including PSL(N|N). Our general analysis is illustrated at the example of the N=1 Wess-Zumino-Novikov-Witten model on GL(1|1). After constructing its N=2 superconformal algebra we determine the (anti-)chiral ring of the theory. It exhibits an interesting interplay between world-sheet and target space supersymmetry.
Blake, Sarah Anne
2009-05-15T23:59:59.000Z
. The coolant was injected through an advanced labyrinth seal to simulate purge flow through a stator-rotor seal. The width of the opening of this seal was varied to simulate the effect of misalignment. Stationary rods were placed upstream of the cascade in four...
Shoemaker J.E.
2009-05-13T23:59:59.000Z
K-311-1 was constructed along with the rest of the K-25 Building in the 1943-1945 timeframe. K-311-1 was equipped with Size 3 converters and Size 38 Allis Chalmers{trademark} single-stage centrifugal compressors driven by 3600 rpm electric motors, and the unit operated as the 'bottom' unit flow-wise in K-25. The depleted flow from the bottom stage in K-311-1 passed through booster compressors and flowed to the K-601 Building where the depleted or 'tails' material was removed. In 1948, after the K-27 Building was completed, the decision was made to operate K-27 and K-25 in series rather than operate the two buildings as separate entities. To facilitate this operation, concrete bases were poured and two sets of booster compressors were installed in the extreme West end of the K-311-1 cell floor. These compressors were enclosed in heated housings and consisted of Size 38 compressors. One pair was to boost the 'B' flow between K-25 and K-27, and one pair was to boost the 'A' flow between the buildings. Each station operated with one compressor on-stream and the other in standby. (Reference 9) Each station also was equipped with a Size 2 after-cooler located in the discharge stream downstream of the junction of the onstream and standby compressors. Additional gaseous diffusion capacity was added at Oak Ridge as K-29, K-31, and K-33 were constructed and placed in service in the early 1950s. As a result of the additional process equipment added by these buildings, in-leakage of light gases to the cascade including light gases introduced into the cascade as a result of purging operations threatened to exceed the capacity of the existing K-312 Purge Cascade facilities in the K-25 Building. As a result, in 1954 K-311-1 was converted to a side purge cascade to remove light gases from the process gas stream as the stream entered K-25 from K-27. Low molecular weight gas in-leakage in K-33, K-31, K-29, and K-27 was removed by the K-311-1 Side Purge Facility and a relatively pure stream of UF6 then passed from K-311-1 into the upstream cells in K-25. In-leakage of light gases in the K-25 Building continued to be removed by the K-312 Purge Facilities. K-311-1 operated as a Side Purge Cascade from 1954 until the K-25 Building was shut down in 1964; at that time K-311-1 became the Oak Ridge Gaseous Diffusion Plant (ORGDP) Top (and only) Purge Cascade. The adjacent K-310-3 Unit was operated along with K-311-1 as the top purge cascade and K-310-2 was also operated at times to supplement cells in the K311-1/K-310-3 Purge Cascade. K-311-1 was shut down on February 14, 1977, after the newer, larger capacity K-402-9 Purge Cascade was placed in operation. K-310-3 continued to operate until the K-402-8 Coolant Removal Unit was placed in service, and K-310-3 was shut down on March 14, 1978. Since the K-311-1 and K-310-3 units continued to operate after K-25 shutdown, removal of equipment such as valves and piping for other projects did not occur in this area. As a result, these two units have not been exposed to atmospheric wet air over the years as much of the remainder of K-25 has been exposed. Any deposits or residual gases contained in K-311-1 or K-310-3 are not likely to be fully hydrolyzed.
Introduction Minimal generation
St Andrews, University of
Introduction Minimal generation Random generation Minimal and probabilistic generation of finite generation of finite groups #12;Introduction Minimal generation Random generation Some motivation Let x1 random elements of G = x1, . . . , xk . (G is the group generated by x1, . . . , xk : all possible
Not Available
2006-01-01T23:59:59.000Z
This revised ITP tip sheet on minimizing boiler blowdown provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.
Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...
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Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing Cyanobacterium Revealedby Electron Tomography. Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...
Nonlocality from N>2 independent single-photon emitters
Thiel, C.; Wiegner, R.; Zanthier, J. von [Institut fuer Optik, Information und Photonik, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany); Agarwal, G. S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 (United States)
2010-09-15T23:59:59.000Z
We demonstrate that intensity correlations of second order in the fluorescence light of N>2 single-photon emitters may violate locality while the visibility of the signal remains below 1/{radical}(2){approx_equal}71%. For this, we derive a homogeneous Bell-Wigner-type inequality, which can be applied to a broad class of experimental setups. We trace the violation of this inequality back to path entanglement created by the process of detection.
Photodesorption of ices I: CO, N2 and CO2
Karin I. Oberg; Ewine F. van Dishoeck; Harold Linnartz
2009-01-23T23:59:59.000Z
A longstanding problem in astrochemistry is how molecules can be maintained in the gas phase in dense inter- and circumstellar regions. Photodesorption is a non-thermal desorption mechanism, which may explain the small amounts of observed cold gas in cloud cores and disk mid-planes. This paper aims to determine the UV photodesorption yields and to constrain the photodesorption mechanisms of three astrochemically relevant ices: CO, N2 and CO2. In addition, the possibility of co-desorption in mixed and layered CO:N2 ices is explored. The ice photodesorption is studied experimentally under ultra high vacuum conditions and at 15-60 K using a hydrogen discharge lamp (7-10.5 eV). The ice desorption during irradiation is monitored by reflection absorption infrared spectroscopy of the ice and simultaneous mass spectrometry of the desorbed molecules. Both the UV photodesorption yields per incident photon and the photodesorption mechanisms are molecule specific. CO photodesorbs without dissociation from the surface layer of the ice. N2, which lacks an electronic transition in this wavelength range, has a photodesorption yield that is more than an order of magnitude lower. This yield increases significantly due to co-desorption when N2 is mixed in with or layered on top of CO ice. CO2 photodesorbs through dissociation and subsequent recombination from the top 10 layers of the ice. At low temperatures (15-18 K) the derived photodesorption yields are 2.7x10^-3 and CO2 photodesorption yield is 1.2x10^-3x(1-e^(-X/2.9)) + 1.1x10^-3x(1-e^(-X/4.6)) molecules photon-1, where X is the ice thickness in monolayers and the two parts of the expression represent a CO2 and CO photodesorption pathway.
Transpiration purged optical probe
2004-01-06T23:59:59.000Z
An optical apparatus for clearly viewing the interior of a containment vessel by applying a transpiration fluid to a volume directly in front of the external surface of the optical element of the optical apparatus. The fluid is provided by an external source and transported by means of an annular tube to a capped end region where the inner tube is perforated. The perforation allows the fluid to stream axially towards the center of the inner tube and then axially away from an optical element which is positioned in the inner tube just prior to the porous sleeve. This arrangement draws any contaminants away from the optical element keeping it free of contaminants. In one of several embodiments, the optical element can be a lens, a viewing port or a laser, and the external source can provide a transpiration fluid having either steady properties or time varying properties.
Waste minimization assessment procedure
Kellythorne, L.L. (Centerior Energy, Cleveland, OH (United States))
1993-01-01T23:59:59.000Z
Perry Nuclear Power Plant began developing a waste minimization plan early in 1991. In March of 1991 the plan was documented following a similar format to that described in the EPA Waste Minimization Opportunity Assessment Manual. Initial implementation involved obtaining management's commitment to support a waste minimization effort. The primary assessment goal was to identify all hazardous waste streams and to evaluate those streams for minimization opportunities. As implementation of the plan proceeded, non-hazardous waste streams routinely generated in large volumes were also evaluated for minimization opportunities. The next step included collection of process and facility data which would be useful in helping the facility accomplish its assessment goals. This paper describes the resources that were used and which were most valuable in identifying both the hazardous and non-hazardous waste streams that existed on site. For each material identified as a waste stream, additional information regarding the materials use, manufacturer, EPA hazardous waste number and DOT hazard class was also gathered. Once waste streams were evaluated for potential source reduction, recycling, re-use, re-sale, or burning for heat recovery, with disposal as the last viable alternative.
Neutrino parameters and the $N_2$-dominated scenario of leptogenesis
Michele Re Fiorentin; Sophie E. King
2014-05-09T23:59:59.000Z
We briefly review the main aspects of leptogenesis, describing both the unflavoured and the flavoured versions of the $N_2$-dominated scenario. A study of the success rates of both classes of models has been carried out. We comment on these results and discuss corrective effects to this simplest scenario. Focusing on the flavoured case, we consider the conditions required by strong thermal leptogenesis, where the final asymmetry is fully independent of the initial conditions. Barring strong cancellations in the seesaw formula and in the flavoured decay parameters, we show that strong thermal leptogenesis favours a lightest neutrino mass $m_1\\gtrsim10\\,\\mbox{meV}$ for normal ordering (NO) and $m_1\\gtrsim 3\\,\\mbox{meV}$ for inverted ordering (IO). Finally, we briefly comment on the power of absolute neutrino mass scale experiments to either support or severely corner strong thermal leptogenesis.
A Hydrogen-Evolving Ni(P2N2)2 Electrocatalyst Covalently Attached...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
A Hydrogen-Evolving Ni(P2N2)2 Electrocatalyst Covalently Attached to a Glassy Carbon Electrode: Preparation, Characterization, A Hydrogen-Evolving Ni(P2N2)2 Electrocatalyst...
Offsetting the radiative benefit of ocean iron fertilization by enhancing N2O emissions
Gruber, Nicolas
from the atmospheric CO2 reduction significantly, because N2O is a much more powerful greenhouse gas
Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic eects
Seitzinger, Sybil
Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic, are increasing due to human activities. Our analysis suggests that a third of global anthropogenic N2O emission the remainder. Over 80% of aquatic anthropogenic N2O emissions are from the Northern Hemisphere mid
N=2 cascade revisited and the enhancon bearings
Benini, Francesco [Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States); SISSA and INFN-Sezione di Trieste Via Beirut 2, I 34014 Trieste (Italy); Bertolini, Matteo [SISSA and INFN-Sezione di Trieste Via Beirut 2, I 34014 Trieste (Italy); Closset, Cyril [Physique Theorique et Mathematique and International Solvay Institutes, Universite Libre de Bruxelles, C.P. 231, 1050 Bruxelles (Belgium); Cremonesi, Stefano [SISSA and INFN-Sezione di Trieste Via Beirut 2, I 34014 Trieste (Italy); Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel-Aviv University, Ramat-Aviv 69978 (Israel)
2009-03-15T23:59:59.000Z
Supergravity backgrounds with varying fluxes generated by fractional branes at nonisolated Calabi-Yau singularities had escaped a precise dual field theory interpretation so far. In the present work, considering the prototypical example of such models, the CxC{sup 2}/Z{sub 2} orbifold, we propose a solution for this problem, and show that the known cascading solution corresponds to a vacuum on the Coulomb branch of the corresponding quiver gauge theory involving a sequence of strong coupling transitions reminiscent of the baryonic root of N=2 supersymmetric quantum chromodynamics . We also find a slight modification of this cascading vacuum which upon mass deformation is expected to flow to the Klebanov-Strassler cascade. Finally, we discuss an infinite class of vacua on the Coulomb branch whose renormalization group flows include infinitely coupled conformal regimes, and explain their gravitational manifestation in terms of new geometric structures that we dub enhancon bearings. Repulson-free backgrounds dual to all the vacua we analyze are explicitly provided.
Sklenak, Stepan
Structure and critical function of Fe and acid sites in Fe-ZSM-5 in propane oxidative species Steamed Fe-zeolites MÃ¶ssbauer spectroscopy UVÂVis FTIR H2-TPR N2O decomposition Propane oxidative of propane to propene with N2O. The evacuated non-steamed FeH-ZSM-5 contained high concentration of BrÃ¸nsted
The development of N2S2 metal complexes as bidentate ligands for organometallic chemistry
Rampersad, Marilyn Vena
2007-04-25T23:59:59.000Z
from CO addition to (NiN2S2)W(CO)4, which is in equilibrium with the resulting (NiN2S2)W(CO)5 species (Keq = 2.8 M-1, G = -1.4 kJ/mole at 50C). Complete NiN2S2 ligand displacement by CO-cleavage of the remaining W-S bond to form W(CO)6 was not observed...
ENERGY-MINIMIZING INCOMPRESSIBLE NEMATIC ...
2014-04-25T23:59:59.000Z
We prove weak lower semi-continuity and existence of energy-minimizers for a free energy describing stable deformations and the corresponding director ...
ENERGY-MINIMIZING NEMATIC ELASTOMERS
ABSTRACT. We prove weak lower semi—continuity and existence of energy- minimizers for a free energy describing stable deformations and the correspond.
Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes
Nabben, Reinhard
Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes H. Telg , J. Maultzsch indices n1 and n2 in semiconducting and metallic nanotubes was performed comparing resonance Raman nanotube families. Ever since the discovery of how to keep isolated nanotubes from rebundeling in solu
Uncertainties Associated with Theoretically Calculated N2-Broadened Half-Widths of H2O Lines
Gamache, Robert R.
to be calculated theoretically. The accuracy of these calculated values depends on many factors such as the line-shape1 Uncertainties Associated with Theoretically Calculated N2- Broadened Half-Widths of H2O Lines Q-offs used in the theoretical calculations, we have carried out extensive numerical calculations of the N2
15N2 formation and fast oxygen isotope exchange during pulsed...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx...
Guidelines for mixed waste minimization
Owens, C.
1992-02-01T23:59:59.000Z
Currently, there is no commercial mixed waste disposal available in the United States. Storage and treatment for commercial mixed waste is limited. Host States and compacts region officials are encouraging their mixed waste generators to minimize their mixed wastes because of management limitations. This document provides a guide to mixed waste minimization.
Waste minimization handbook, Volume 1
Boing, L.E.; Coffey, M.J.
1995-12-01T23:59:59.000Z
This technical guide presents various methods used by industry to minimize low-level radioactive waste (LLW) generated during decommissioning and decontamination (D and D) activities. Such activities generate significant amounts of LLW during their operations. Waste minimization refers to any measure, procedure, or technique that reduces the amount of waste generated during a specific operation or project. Preventive waste minimization techniques implemented when a project is initiated can significantly reduce waste. Techniques implemented during decontamination activities reduce the cost of decommissioning. The application of waste minimization techniques is not limited to D and D activities; it is also useful during any phase of a facility`s life cycle. This compendium will be supplemented with a second volume of abstracts of hundreds of papers related to minimizing low-level nuclear waste. This second volume is expected to be released in late 1996.
Ellis-Monaghan, Joanna
David J. Hathaway, IBM EDAInverter Minimization 1 Inverter Minimization - OverviewInverter network a polarity graph 9 Initially consider only equal cost AND, NAND, OR, and NOR gates 9 Inverters for covering fundamental cycles 9 Considering electrically useful inverters #12;David J. Hathaway, IBM
Herwig, Falk; VandenBerg, Don A.; Navarro, Julio F. [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, BC V8W 3P6 (Canada); Ferguson, Jason [Department of Physics, Wichita State University Wichita, KS 67260 (United States); Paxton, Bill, E-mail: fherwig@uvic.ca, E-mail: vandenbe@uvic.ca, E-mail: jason.ferguson@wichita.edu, E-mail: paxton@kitp.ucsb.edu [KITP/UC Santa Barbara, Santa Barbara, CA 93106 (United States)
2012-10-01T23:59:59.000Z
We have investigated the color-magnitude diagram of {omega} Centauri and find that the blue main sequence (bMS) can be reproduced only by models that have a helium abundance in the range Y = 0.35-0.40. To explain the faint subgiant branch of the reddest stars ('MS-a/RG-a' sequence), isochrones for the observed metallicity ([Fe/H] Almost-Equal-To -0.7) appear to require both a high age ({approx}13 Gyr) and enhanced CNO abundances ([CNO/Fe] Almost-Equal-To 0.9). Y Almost-Equal-To 0.35 must also be assumed in order to counteract the effects of high CNO on turnoff colors and thereby to obtain a good fit to the relatively blue turnoff of this stellar population. This suggests a short chemical evolution period of time (<1 Gyr) for {omega} Cen. Our intermediate-mass (super-)asymptotic giant branch (AGB) models are able to reproduce the high helium abundances, along with [N/Fe] {approx}2 and substantial O depletions if uncertainties in the treatment of convection are fully taken into account. These abundance features distinguish the bMS stars from the dominant [Fe/H] Almost-Equal-To -1.7 population. The most massive super-AGB stellar models (M{sub ZAMS} {>=} 6.8 M{sub Sun }, M{sub He,core} {>=} 1.245 M{sub Sun }) predict too large N enhancements, which limit their role in contributing to the extreme populations. In order to address the observed central concentration of stars with He-rich abundance, we show here quantitatively that highly He- and N-enriched AGB ejecta have particularly efficient cooling properties. Based on these results and on the reconstruction of the orbit of {omega} Cen with respect to the Milky Way, we propose the Galactic plane passage gas purging scenario for the chemical evolution of this cluster. The bMS population formed shortly after the purging of most of the cluster gas as a result of the passage of {omega} Cen through the Galactic disk (which occurs today every {approx}40 Myr for {omega} Cen) when the initial mass function of the dominant population had 'burned' through most of the Type II supernova mass range. AGB stars would eject most of their masses into the gas-depleted cluster through low-velocity winds that sink to the cluster core due to their favorable cooling properties and form the bMS population. In our discussion we follow our model through four passage events, which could explain some key properties not only of the bMS but also of the MS-a/RGB-a and the s-enriched stars.
Ho, David
Atmospheric O2//N2 changes, 1993ÂÂ2002: Implications for the partitioning of fossil fuel CO2. Cassar (2005), Atmospheric O2/N2 changes, 1993Â2002: Implications for the partitioning of fossil fuel CO2. The O2/N2 ratio of air is falling because combustion of fossil fuel and biomass both con- sume O2
Riemer, Nicole
coatings, formed via gas-to- particle conversion on aqueous aerosols, to N2O5 hydrolysis on localRelative importance of organic coatings for the heterogeneous hydrolysis of N2O5 during summer suppress heterogeneous N2O5 hydrolysis. In this study we investigated the relative importance of organic
Which BPS baryons minimize volume?
Evslin, Jarah; Kuperstein, Stanislav [Scuola Internazionale Superiore di Studi Avanzati (SISSA), Strada Costiera, Via Beirut n.2-4, 34013 Trieste (Italy); Theoretische Natuurkunde, Vrije Universiteit Brussel and The International Solvay Institutes, Pleinlaan 2, B-1050 Brussels (Belgium)
2009-02-15T23:59:59.000Z
A Bogomol'nyi-Prasad-Sommerfield (BPS) 3-cycle in a Sasaki-Einstein 5-manifold in general does not minimize volume in its homology class, as we illustrate with several examples of nonminimal volume BPS cycles on the 5-manifolds Y{sup p,q}. Instead they minimize the energy of a wrapping D-brane, extremizing a generalized calibration. We present this generalized calibration and demonstrate that it reproduces both the Born-Infeld and the Wess-Zumino parts of the D3-brane energy.
Gauge/Gravity Duality, Green Functions of N=2 SYM and Radial/Energy-Scale Relation
Xiao-Jun Wang; Seng Hu
2002-07-19T23:59:59.000Z
We consider supergravity configuration of D5 branes wrapped on supersymmetric 2-cycles and use it to calculate one-point and two-point Green functions of some special operators in N=2 super Yang-Mills theory. We show that Green functions obtained from supergravity include two very different parts. One of them corresponds to perturbative results of quantum field theory, and another is a non-perturbative effect which corresponds to contribution from instantons with fractional charge. Comparing Green functions obtained from supergravity and gauge theory, we obtain radial/energy-scale relation for this gauge/gravity correspondence with N=2 supersymmetry. This relation leads right beta-function of N=2 SYM from supergravity configuration.
N2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR
Ulich, Thomas
) SodankylÃ¤ Geophysical Observatory, SodankylÃ¤, Finland. (pekka.verronen@fmi.fi/+358-9-19294603) Solar protonN2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR PROTON EVENT, Helsinki, Finland. (2) Institute of Astronomy of the Russian Academy of Sciences, Moscow, Russia. (3
Dipartimento di Fisica -Ufficio Assegni Edificio Marconi -Piazz.le Aldo Moro n. 2, 00185 Roma
Roma "La Sapienza", UniversitÃ di
Dipartimento di Fisica - Ufficio Assegni Edificio Marconi - Piazz.le Aldo Moro n. 2, 00185 Roma T (+39) 06 49914379 F (+39) 06 49914230 http://www.phys.uniroma1.it/fisica/ daria.varone@uniroma1.it RAPPORTO DI LAVORO A TEMPO DETERMINATO TIPOLOGIA A Il Direttore del Dipartimento di Fisica Visto il D
CAHIER DU CAMPUS LOGISTIQUE N2 Des carrefours intelligents pour une meilleure gestion du
Boyer, Edmond
CAHIER DU CAMPUS LOGISTIQUE N°2 Des carrefours « intelligents » pour une meilleure gestion du gestion du trafic en milieu urbain nécessite le déploiement de solutions techniques innovantes pour Journal Européen des Systèmes Automatisés. MOTS-CLÉS : gestion du trafic, réseau de Petri hybride, système
Exact beta-functions in softly-broken N=2 Chern-Simons matter theories
I. Jack; C. Luckhurst
2011-01-21T23:59:59.000Z
We present exact results for the beta-functions for the soft-breaking parameters in softly-broken N=2 Chern-Simons matter theories in terms of the anomalous dimension in the unbroken theory. We check our results explicitly up to the two loop level.
Shock-Tube Study of Methane Ignition with NO2 and N2O
Pemelton, John
2012-10-19T23:59:59.000Z
. The experimental pressure range was 1 - 44 atm and the temperature range tested was 1177 – 2095 K. The additives NO2 and N2O were added in concentrations from 831 ppm to 3539 ppm. The results of the mixtures with NO2 have a reduction in ignition delay time across...
Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular spectroscopy
Bayram, S. BurÃ§in
an advanced laboratory course focused on spectroscopy of atoms and molecules, for a diverse and solid#12;Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular to demonstrate molecular spectroscopy by measuring the vibrational energy spacing of nitrogen molecules
Sminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics
Ingrand, FranÃ§ois
SÃ©minaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics Le 06 Septembre TOULOUSE Cedex 4 RÃ©sumÃ© Droplet-based microfluidics has a tremendous potential for the miniaturization of chemicals in microfluidic systems is therefore a key to reliably downscale the assays from microtiter plates
MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives
Ghosh, Joydeep
, corporate strategy and IT, business value of IT, knowledge management and organizational learning1 MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives Spring creation, to new organizational, network, and community structures, to a new cadre of business models
What can topology changes in the oddball N2 reveal about underlying processes?
Nieuwenhuis, Sander
of Victoria, Victoria, British Columbia, Canada Correspondence to Christopher M. Warren, MSc, Department of Psychology, University of Victoria, Courier: Room A234, Cornett Building, PO BOX 3050, STN CSC, Victoria, BC 18 July 2011 accepted 7 August 2011 The N2 is a negative deflection in the human event- related brain
New estimates of global emissions of N2O from rivers and estuaries
Seitzinger, Sybil
from rivers and estuaries. We present total global emissions, as well as regional shares. 2New estimates of global emissions of N2O from rivers and estuaries CAROLIEN KROEZE1 , EGON DUMONT1 rivers and estuaries, using the NEWS-DIN model. NEWS-DIN is a model of the global transport of dissolved
CH4 and N2O emissions from Spartina alterniflora and Phragmites australis in experimental mesocosms
Chen, Jiquan
Author's personal copy CH4 and N2O emissions from Spartina alterniflora and Phragmites australis emissions from S. alterniflora with those from a native C3 plant, Phragmites australis, by establishing Elsevier Ltd. All rights reserved. Keywords: Common reed (Phragmites australis); Brackish marsh mesocosms
Minimal universal quantum heat machine
David Gelbwaser-Klimovsky; Robert Alicki; Gershon Kurizki
2012-09-06T23:59:59.000Z
In traditional thermodynamics the Carnot cycle yields the ideal performance bound of heat engines and refrigerators. We propose and analyze a minimal model of a heat machine that can play a similar role in quantum regimes. The minimal model consists of a single two-level system with periodically modulated energy splitting that is permanently, weakly, coupled to two spectrally-separated heat baths at different temperatures. The equation of motion allows to compute the stationary power and heat currents in the machine consistently with the second-law of thermodynamics. This dual-purpose machine can act as either an engine or a refrigerator (heat pump) depending on the modulation rate. In both modes of operation the maximal Carnot efficiency is reached at zero power. We study the conditions for finite-time optimal performance for several variants of the model. Possible realizations of the model are discussed.
A Minimally Symmetric Higgs Boson
Ian Low
2014-12-05T23:59:59.000Z
Models addressing the naturalness of a light Higgs boson typically employ symmetries, either bosonic or fermionic, to stabilize the Higgs mass. We consider a setup with the minimal amount of symmetries: four shift symmetries acting on the four components of the Higgs doublet, subject to the constraints of linearly realized SU(2)xU(1) electroweak symmetry. Up to terms that explicitly violate the shift symmetries, the effective lagrangian can be derived, irrespective of the spontaneously broken group G in the ultraviolet, and is universal in all models where the Higgs arises as a pseudo-Nambu-Goldstone boson (PNGB). Very high energy scatterings of vector bosons could provide smoking gun signals of a minimally symmetric Higgs boson.
A Minimally Symmetric Higgs Boson
Low, Ian
2014-01-01T23:59:59.000Z
Models addressing the naturalness of a light Higgs boson typically employ symmetries, either bosonic or fermionic, to stabilize the Higgs mass. We consider a setup with the minimal amount of symmetries: four shift symmetries acting on the four components of the Higgs doublet, subject to the constraints of linearly realized SU(2)xU(1) electroweak symmetry. Up to terms that explicitly violate the shift symmetries, the effective lagrangian can be derived, irrespective of the spontaneously broken group G in the ultraviolet, and is universal in all models where the Higgs arises as a pseudo-Nambu-Goldstone boson (PNGB). Very high energy scatterings of vector bosons could provide smoking gun signals of a minimally symmetric Higgs boson.
Dipartimento di Fisica -Edificio Marconi -Piazz.le Aldo Moro n. 2, 00185 Roma
Roma "La Sapienza", UniversitÃ di
Dipartimento di Fisica - Edificio Marconi - Piazz.le Aldo Moro n. 2, 00185 Roma T (+39) 06 49914379 Direttore del Dipartimento di Fisica Visto il D.L. luogotenenziale 31 agosto 1945, n. 660; Visti i DD.MM. 4 del Dipartimento di Fisica del 23/01/2013 D e c r e t a Art. 1 Â Oggetto del bando. E' indetta una
Integrable N = 2 Landau-Ginzburg Theories from Quotients of Fusion Rings
Eli J. Mlawer; Harold A. Riggs; Howard J. Schnitzer
1993-10-14T23:59:59.000Z
The discovery of integrable $N=2$ supersymmetric Landau-Ginzburg theories whose chiral rings are fusion rings suggests a close connection between fusion rings, the related Landau-Ginzburg superpotentials, and $N=2$ quantum integrability. We examine this connection by finding the natural $SO(N)_K$ analogue of the construction that produced the superpotentials with $Sp(N)_K$ and $SU(N)_K$ fusion rings as chiral rings. The chiral rings of the new superpotentials are not directly the fusion rings of any conformal field theory, although they are natural quotients of the tensor subring of the $SO(N)_K$ fusion ring. The new superpotentials yield solvable (twisted $N=2$) topological field theories. We obtain the integer-valued correlation functions as sums of $SO(N)_K$ Verlinde dimensions by expressing the correlators as fusion residues. The $SO(2n+1)_{2k+1}$ and $SO(2k+1)_{2n+1}$ related topological Landau-Ginzburg theories are isomorphic, despite being defined via quite different superpotentials.
Indirect ultraviolet photodesorption from CO:N2 binary ices - an efficient grain-gas process
Bertin, Mathieu; Romanzin, Claire; Poderoso, Hugo A M; Michaut, Xavier; Philippe, Laurent; Jeseck, Pascal; Öberg, Karin I; Linnartz, Harold; Fillion, Jean-Hugues
2013-01-01T23:59:59.000Z
UV ice photodesorption is an important non-thermal desorption pathway in many interstellar environments that has been invoked to explain observations of cold molecules in disks, clouds and cloud cores. Systematic laboratory studies of the photodesorption rates, between 7 and 14 eV, from CO:N2 binary ices, have been performed at the DESIRS vacuum UV beamline of the synchrotron facility SOLEIL. The photodesorption spectral analysis demonstrates that the photodesorption process is indirect, i.e. the desorption is induced by a photon absorption in sub-surface molecular layers, while only surface molecules are actually desorbing. The photodesorption spectra of CO and N2 in binary ices therefore depend on the absorption spectra of the dominant species in the subsurface ice layer, which implies that the photodesorption efficiency and energy dependence are dramatically different for mixed and layered ices compared to pure ices. In particular, a thin (1-2 ML) N2 ice layer on top of CO will effectively quench CO photod...
Nitrous Oxide Nitrous oxide (chemical formula N2O), is a trace gas in Earth's atmosphere, with a
fuel, biomass and biofuel, and industrial processes. Nitrous oxide emissions related to biofuel, the Global Warming Potential (GWP) is a more useful quantity. The GWP of N2O is the time- integrated radiative forcing following a 1 kg pulse emission of N2O, relative to the same quantity following a 1 kg
Single-QCL-based absorption sensor for simultaneous trace-gas detection of CH4 and N2O
compact multipass gas cell (MGC). This sensor uses a thermoelectrically cooled, continuous waveÂ8]. A compact mid-infrared absorption spectrometer for N2O and CH4 was developed using thermoelectrically cooled.04 cm-1 ) and N2O (1274.61 cm-1 ) lines at a 1 Hz repetition rate. Wavelength modulation spec- troscopy
ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions
Paris-Sud XI, UniversitÃ© de
ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions Pascal Boeckx negative to positive. We studied the short-term effect of tillage intensity on N2O and CO2 emissions. We site, an intermediately aerated Luvisol in Belgium, were similar. Nitrous oxide and CO2 emissions were
Waste minimization by process modification
Hopper, J.R.; Yaws, C.L.; Ho, T.C.; Vichailak, M. (Lamar Univ., Beaumont, TX (United States))
1993-01-01T23:59:59.000Z
A simulation of the Sohio process for the production of acrylonitrile from the catalytic ammoxidation of propylene has been performed, using published kinetic and thermodynamic data to illustrate the concepts of pollution prevention by process modification. The study has determined the reaction parameters which will minimize the production of by-products while maintaining the conversion of propylene above 80%. The reaction parameters studied were reactor type (plug flow reactor [PFR], continuous stirred tank reactor [CSTR], and fluidized bed reactor [FBC]), reaction temperature, residence time, and entering feed temperature. The minimum by-products were produced in an FBR operating at 450 C at a residence time of 7 seconds for a conversion of 81%.
Waste minimization in semiconductor processing
Hardwick, S.J.; Mailloux, J.C. [Novapure Corp., Danbury, CT (United States)
1994-12-31T23:59:59.000Z
The US semiconductor industry uses 5--7 thousand pounds of arsine annually. Fifty to eighty percent of the arsine used becomes a waste product, which requires abatement. Traditional methods of abatement are reviewed with an emphasis on dry chemical scrubbing. A variety of dry chemical scrubbing materials were evaluated for arsine capacity, using activated carbon as the baseline for comparison. Of the available technologies, dry chemical scrubbing is the most effective means of minimizing arsenic containing waste generated from semiconductor effluents. A copper oxide based media has been identified which has high capacity, high efficiency and treats the spectrum of gases used in MOCVD processes. Reclaim and recovery of spent scrubber media has the potential to drastically reduce arsenic waste from semiconductor manufacturing.
High resolution measurements of the {sup 241}Am(n,2n) reaction cross section
Sage, C. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Semkova, V. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia (Bulgaria); Bouland, O. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545 (United States); Dessagne, P.; Rudolf, G. [Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Fernandez, A.; Naestren, C.; Ottmar, H.; Somers, J.; Wastin, F. [European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, D-76125 Karlsruhe (Germany); Gunsing, F. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); Noguere, G. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Plompen, A. J. M. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Romain, P. [Commissariat a L'Energie Atomique, DAM, DIF, F-91297 Arpajon (France)
2010-06-15T23:59:59.000Z
Measurements of the {sup 241}Am(n,2n) reaction cross section have been performed at the Joint Research Centre (JRC) Geel in the frame of a collaboration between the European Commission (EC) JRC and French laboratories from CNRS and the Commissariat a L'Energie Atomique (CEA) Cadarache. Raw material coming from the Atalante facility of CEA Marcoule has been transformed by JRC Karlsruhe into suitable {sup 241}AmO{sub 2} samples embedded in Al{sub 2}O{sub 3} matrices specifically designed for these measurements. The irradiations were carried out at the 7-MV Van de Graaff accelerator. The {sup 241}Am(n,2n) reaction cross section was determined relative to the {sup 27}Al(n,alpha){sup 24}Na standard cross section. The measurements were performed in four sessions, using quasi-mono-energetic neutrons with energies ranging from 8 to 21 MeV produced via the {sup 2}H(d,n){sup 3}He and the {sup 3}H(d,n){sup 4}He reactions. The induced activity was measured by standard gamma-ray spectrometry using a high-purity germanium detector. Below 15 MeV, the present results are in agreement with data obtained earlier. Above 15 MeV, these measurements allowed the experimental investigation of the {sup 241}Am(n,2n) reaction cross section for the first time. The present data are in good agreement with predictions obtained with the talys code that uses an optical and fission model developed at CEA.
The free energy of N=2 supersymmetric AdS_4 solutions of M-theory
Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks
2011-07-29T23:59:59.000Z
We show that general N=2 supersymmetric AdS_4 solutions of M-theory with non-zero M2-brane charge admit a canonical contact structure. The free energy of the dual superconformal field theory on S^3 and the scaling dimensions of operators dual to supersymmetric wrapped M5-branes are expressed via AdS/CFT in terms of contact volumes. In particular, this leads to topological and localization formulae for the coefficient of N^{3/2} in the free energy of such solutions.
H-2(p,n)2p Spin Transfer from 305 to 788 Mev
McNaughton, M. W.; Koch, K.; Supek, I.; Tanaka, N.; Ambrose, DA; Coffey, P.; Johnston, K.; McNaughton, K. H.; Riley, P. J.; Glass, G.; Hiebert, John C.; Northcliffe, L. C.; Simon, A. J.; Mercer, D. J.; Adams, D. L.; Spinka, H.; Jeppersen, R. H.; Tripard, G. E.; Woolverton, H.
1992-01-01T23:59:59.000Z
PHYSICAL REVIEW C VOLUME 45, NUMBER 6 JUNE 1992 ARTICLES 2H(y, n)2p spin transfer from $05 to 7'88 Mev M. W. McNaughton, K. Koch, ' I. Supek, and N. Tanakat Los Alamos National Laboratory, Ios Alarnos, ?wMexico 876/6 D. A. Ambrose, P. Coff... the primary polarized-proton beam onto a liquid-deuterium (LD2) target and collimating the neutrons at a laboratory scat- tering angle of 0 (180' c.m. ). The neutron beam is po- larized via the L-to-L spin-transfer observable A'L, l. for the ~H(p, n...
Temperature Dependence of Scott Thermomagnetic Torque in N2, Ch4, and Hd
Adair, Thomas W.
1972-01-01T23:59:59.000Z
10 '&D&2x10 ', B. Gosse (private communica- tion). PHYSIC AL REVIEW A VO LUME 6, NUMBER 1 JULY 1972 Temperature Dependence of the Scott Thermomagnetic Torque in N, , CH4, and HD T. W. Adair, III Department of Physics, Texas A@M University..., College Station, Texas 77843 (Received 20 December 1971) The temperature dependence of the Scott thermomagnetic torque has been measured in N2, CH4, and HD. Measurements were made from a temperature of 75 up to 300'K, from a pres- sure of 0.003 up to 1...
The N2K Consortium. IV. New temperatures and metallicities for 100,000+ FGK dwarfs
S. Mark Ammons; Sarah E. Robinson; Jay Strader; Gregory Laughlin; Debra Fischer; Aaron Wolf
2005-10-07T23:59:59.000Z
We have created a framework to facilitate the construction of specialized target lists for radial velocity surveys that are biased toward stars that (1) possess planets and (2) are easiest to observe with current detection techniques. We use a procedure that uniformly estimates fundamental stellar properties of Tycho 2 stars, with errors, using spline functions of broadband photometry and proper motion found in Hipparcos/Tycho 2 and 2MASS. We provide estimates of temperature and distance for 2.4 million Tycho 2 stars that lack trigonometric distances. For stars that appear to be FGK dwarfs according to estimated temperature and absolute magnitude, we also derive [Fe/H] and identify unresolved binary systems with mass ratios between 1.25 and 3. Our spline function models are trained on the unique Valenti & Fischer (2005) set, composed of 1000 dwarfs with precise stellar parameters estimated from HIRES spectroscopy. For FGK dwarfs with V photometric error less than 0.05 magnitudes, or V 0.2). Our metallicity estimates have been used to identify targets for N2K (Fischer et al. 2005), a large-scale radial velocity search for Hot Jupiters, which has published the detection of 4 Hot Jupiters with one transit. The broadband filtering outlined here is the first screening tier for N2K; the second tier is a low-resolution spectroscopy program headed by S.E. Robinson (astro-ph/0510150).
Informational Webinar on Bat Impact Minimization Technologies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
in order to address and minimize the regulatory and financial risks associated with wind power development in locations with sensitive bat species. More information about this...
An Inexact Proximal Method for Quasiconvex Minimization
2015-01-10T23:59:59.000Z
Jan 10, 2015 ... Proof. From the cosines law and (4.11), we have: ..... rithmic framework for nuclear norm minimization, Mathematical Programming, Ser A, 133,.
A Unified Approach for Minimizing Composite Norms
Necdet Serhat Aybat
2010-05-25T23:59:59.000Z
May 25, 2010 ... Abstract: We propose a first-order augmented Lagrangian algorithm (FALC) to solve the composite norm minimization problem min ...
Optimization Online - Hankel Matrix Rank Minimization with ...
Maryam Fazel
2012-08-29T23:59:59.000Z
Aug 29, 2012 ... Abstract: We introduce a flexible optimization framework for nuclear norm minimization of matrices with linear structure, including Hankel, ...
Minimizing the sulphur content in Kraft lignin.
Svensson, Sara
2008-01-01T23:59:59.000Z
?? The aim of this project is to investigate the possibilities of minimizing the sulphur content in Kraft lignin. Kraft lignin contains about 1.5 to… (more)
A U T U M N 2 0 1 4www.ucd.ie/ucdtoday 5.Alooktothe
Pollastri, Gianluca
A U T U M N 2 0 1 4www.ucd.ie/ucdtoday 5.Alooktothe biggerpicture ofresearch 7.Thenatural worldin Quinn, Bernadette Rafter, Eugene Roche, Mark Simpson, Craig Slattery, Barry Smyth, Conor Sweeney, Cathy
Large rank Wilson loops in N=2 superconformal QCD at strong coupling
Benedict Fraser; S. Prem Kumar
2012-02-28T23:59:59.000Z
We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric representations with ranks of order N. We find that large rank antisymmetric loops are independent of the coupling at strong 't Hooft coupling while symmetric Wilson loops grow exponentially with it. Symmetric loops display a non-analyticity as a function of the rank, characterized by the splitting of a single matrix model eigenvalue from the continuum, bearing close resemblance to Bose-Einstein condensation in an ideal gas. We discuss implications of these for a putative large-N string dual. The method of calculation we adopt makes explicit the connection to Fermi and Bose gas descriptions and also suggests a tantalizing connection of the above system to a multichannel Kondo model.
Enhanced CO2/N2 Selectivity in Amidoxime-Modified Porous Carbon
Mahurin, Shannon Mark [ORNL] [ORNL; Gorka, Joanna [ORNL] [ORNL; Nelson, Kimberly M [ORNL] [ORNL; Mayes, Richard T [ORNL] [ORNL; Dai, Sheng [ORNL] [ORNL
2014-01-01T23:59:59.000Z
In this work, we examine the use of the amidoxime functional group grafted onto a hierarchical porous carbon framework for the selective capture and removal of carbon dioxide from combustion streams. Measured CO2/N2 ideal selectivity values for the amidoxime-grafted carbon were significantly higher than the pristine porous carbon with improvements of 65%. Though the overall CO2 capacity decreased slightly for the activated carbon from 4.97 mmol g-1 to 4.24 mmol g-1 after surface modification due to a reduction in the total surface area, the isosteric heats of adsorption increased after amidoxime incorporation indicating an increased interaction of CO2 with the sorbent. Total capacity was reproducible and stable after multiple adsorption/desorption cycles with no loss of capacity suggesting that modification with the amidoxime group is a potential method to enhance carbon capture.
Sustainability for the Global Biofuels Industry Minimizing Risks...
Broader source: Energy.gov (indexed) [DOE]
Industry Minimizing Risks and Maximizing Opportunities Sustainability for the Global Biofuels Industry Minimizing Risks and Maximizing Opportunities Conservation International...
Composite Self-concordant Minimization Volkan Cevher
Combettes, Patrick Louis
Composite Self-concordant Minimization Volkan Cevher Laboratory for Information and InferenceTran Dinh Anastasios Kyrillidis Yen-Huan Li Paris 6 Dec 11, 2013 #12;Composite minimization Motivation-the-grid array processing g convex and possibly nonsmooth (P) Â·a Â·a f convex and smooth #12;Composite
Aluminum: Principled Scenario Exploration through Minimality
Dougherty, Daniel J.
Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J. We present Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios
Aluminum: Principled Scenario Exploration through Minimality
Krishnamurthi, Shriram
Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios and backtracking. It also
Minimizing electrode contamination in an electrochemical cell
Kim, Yu Seung; Zelenay, Piotr; Johnston, Christina
2014-12-09T23:59:59.000Z
An electrochemical cell assembly that is expected to prevent or at least minimize electrode contamination includes one or more getters that trap a component or components leached from a first electrode and prevents or at least minimizes them from contaminating a second electrode.
pathways, N2O is a powerful greenhouse gas that affects the Earth's energy balance and climate. The ocean
Effect of Minimal lengths on Electron Magnetism
Khireddine Nouicer
2007-07-13T23:59:59.000Z
We study the magnetic properties of electron in a constant magnetic field and confined by a isotropic two dimensional harmonic oscillator on a space where the coordinates and momenta operators obey generalized commutation relations leading to the appearance of a minimal length. Using the momentum space representation we determine exactly the energy eigenvalues and eigenfunctions. We prove that the usual degeneracy of Landau levels is removed by the presence of the minimal length in the limits of weak and strong magnetic field.The thermodynamical properties of the system, at high temperature, are also investigated showing a new magnetic behavior in terms of the minimal length.
High resolution n = 3 to n = 2 spectra of neon-like silver
Beiersdorfer, P.; Bitter, M.; von Goeler, S.; Cohen, S.; Hill, K.W.; Timberlake, J.; Walling, R.S.; Chen, M.H.; Hagelstein, P.L.; Scofield, J.H.
1986-04-01T23:59:59.000Z
Spectra of the n = 3 to n = 2 transitions in neon-like silver emitted from the Princeton Large Torus have been recorded with a high-resolution Bragg-crystal spectrometer. The measurements cover the wavelength region 3.3 to 4.1 A and include the forbidden 3p ..-->.. 2p electric quadrupole lines. Transitions in the adjacent sodium-like, and aluminum-like charge states of silver have also been observed and identified. The Ly-..cap alpha.. spectra of hydrogen-like argon and iron, the K..cap alpha.. spectra of helium-like argon, potassium, manganese, and iron, and the K..beta.. spectrum of helium-like argon fall in the same wavelength region in first or second order and have been measured concurrently. These spectra provide a coherent set of wavelength reference data obtained with the same spectrometer and from the same tokamak. This set is used as a basis to compare wavelength predictions for one- and two-electron systems to each other and to determine the transition energies of the silver lines with great accuracy.
Waste minimization and pollution prevention awareness plan
Not Available
1991-05-31T23:59:59.000Z
The purpose of this plan is to document the Lawrence Livermore National Laboratory (LLNL) Waste Minimization and Pollution Prevention Awareness Program. The plan specifies those activities and methods that are or will be employed to reduce the quantity and toxicity of wastes generated at the site. The intent of this plan is to respond to and comply with (DOE's) policy and guidelines concerning the need for pollution prevention. The Plan is composed of a LLNL Waste Minimization and Pollution Prevention Awareness Program Plan and, as attachments, Program- and Department-specific waste minimization plans. This format reflects the fact that waste minimization is considered a line management responsibility and is to be addressed by each of the Programs and Departments. 14 refs.
Penalty Decomposition Methods for Rank Minimization ?
2010-11-22T23:59:59.000Z
Nov 22, 2010 ... In this paper we consider general rank minimization problems with rank appearing in either objective ...... a M. The similar phenomenon as above can be observed in Table 3 for FPCA. We also ..... tion to system identification.
The Parisi formula has a unique minimizer
Antonio Auffinger; Wei-Kuo Chen
2014-09-05T23:59:59.000Z
In 1979, G. Parisi predicted a variational formula for the thermodynamic limit of the free energy in the Sherrington-Kirkpatrick model and described the role played by its minimizer. This formula was verified in the seminal work of Talagrand and later generalized to the mixed p-spin models by Panchenko. In this paper, we prove that the minimizer in Parisi's formula is unique at any temperature and external field by establishing the strict convexity of the Parisi functional.
On Quantum Channel Estimation with Minimal Resources
M. Zorzi; F. Ticozzi; A. Ferrante
2011-06-10T23:59:59.000Z
We determine the minimal experimental resources that ensure a unique solution in the estimation of trace-preserving quantum channels with both direct and convex optimization methods. A convenient parametrization of the constrained set is used to develop a globally converging Newton-type algorithm that ensures a physically admissible solution to the problem. Numerical simulations are provided to support the results, and indicate that the minimal experimental setting is sufficient to guarantee good estimates.
Hemmingsen, T.; Aagotnes, N.O.; Kroeger-Silseth, T.; Kolak, N.; Kaik, M. [Stavanger Coll. (Norway)
1999-11-01T23:59:59.000Z
Three steels, 13% Cr-steel, SS 304 steel and duplex steel are examined for corrosion for 48-hours periods in N{sub 2} or CO{sub 2} purged 0.5 M sodium chloride electrolytes with different sulfite concentrations. The results show that 13%Cr-steel is most susceptible to pitting in the presence of sulfite both under N{sub 2} and CO{sub 2} atmospheres. SS 304 steel was more resistant to corrosion than 13%Cr-steel. Duplex steel showed rather good corrosion resistance under these conditions. The corrosion rate, inclusive pitting corrosion, after 24 hours in presence of 0--10 mM sulfite based on LPR-measurements is for duplex steel 0.5--0.9 mm/year under N{sub 2} and 0.1--1.8 mm/year under CO{sub 2}, for SS 304 steel 1.0--1.8 mm/year under N{sub 2} and 0.6--1.4 mm/year under CO{sub 2}, and for 13%Cr-steel 1.3--2.2 mm/year under N{sub 2} and 0.7--1.8 mm/year under CO{sub 2}. The use of AC-impedance measurements is discussed. The method should be used with care when other mechanisms than general corrosion are involved.
Multifunction minimization for programmable logic arrays
Campbell, J.A.
1984-01-01T23:59:59.000Z
The problem of minimizing two-level AND/OR Boolean algebraic functions of n inputs and m outputs for implementation on programmable logic arrays (PLA) is examined. The theory of multiple-output functions as well as the historically alternative approaches to reckoning the cost of an equation implementation are reviewed. The PLA is shown to be a realization of the least product gate equation cost criterion. The multi-function minimization is dealt with in the context of a directed tree search algorithm developed in previous research. The PLA oriented minimization is shown to alter the nature of each of the basic tenets of multiple-output minimization used in earlier work. The concept of a non-prime but selectable implicant is introduced. A new cost criterion, the quantum cost, is discussed, and an approximation algorithm utilizing this criterion is developed. A timing analysis of a cyclic resolution algorithm for PLA based functions is presented. Lastly, the question of efficiency in automated minimization algorithms is examined. The application of the PLA cost criterion is shown to exhibit intrinsic increases in computational efficiency. A minterm classification algorithm is suggested and a PLA minimization algorithm is implemented in the FORTRAN language.
Vibrational Spectroscopy of Mass Selected [UO2(ligand)n]2+ Complexes in the Gas Phase
Gary S. Groenewold; Anita Gianotto; Michael Vanstipdonk; Kevin C. Cossel; David T. Moore,; Nick Polfer; Jos Oomens
2006-03-01T23:59:59.000Z
The gas-phase infrared spectra of discrete uranyl ([UO2]2+) complexes ligated with acetone and/or acetonitrile were used to evaluate systematic trends of ligation on the position of the O=U=O stretch, and to enable rigorous comparison with the results of computational studies. Ionic uranyl complexes isolated in a Fourier transform ion cyclotron resonance mass spectrometer were fragmented via infrared multiphoton dissociation using a free electron laser scanned over the mid-IR wavelengths. The asymmetric O=U=O stretching frequency was measured at 1017 cm-1 for [UO2(CH3COCH3)2]2+, and was systematically red shifted to 1000 and 988 cm-1 by the addition of a third and fourth acetone ligands, respectively, which was consistent with more donation of electron density to the uranium center in complexes with higher coordination number. The experimental measurements were in good agreement with values generated computationally using LDA, B3LYP, and ZORA-PW91 approaches. In contrast to the uranyl frequency shifts, the carbonyl frequencies of the acetone ligands were progressively blue shifted as the number of ligands increased from 2 to 4, and approached that of free acetone. This observation was consistent with the formation of weaker noncovalent bonds between uranium and the carbonyl oxygen as the extent of ligation increases. Similar trends were observed for [UO2(CH3CN)n]2+ complexes although the magnitude of the red shift in the uranyl frequency upon addition more acetonitrile ligands was smaller than for acetone, consistent with the more modest nucleophilic nature of acetonitrile. This conclusion was amplified by the uranyl stretching frequencies measured for mixed acetone/acetonitrile complexes, which showed that substitution of one acetone for one acetonitrile produced a modest red shift of 3 to 6 cm-1.
Row, Jeffrey R.
, N2L 3G1 Website: http://jeffrow.ca Â· Email: jeff.row@me.com Â· Phone: 1-416-399-3066 1 Education 2006 and population structure of foxsnakes across spatial and temporal scales. 2003-2005 M.Sc. Biology, University (Lampropeltis triangulum). 1997-2001 B.Sc. Environmental Biology, Queen's University, Kingston, Ontario. 2
Vallino, Joseph J.
Impacts of Fertilization on Rates of Autotrophic N2 Fixation in Salt Marshes and Cranberry Bogs fixation in salt marshes and cranberry bogs of MA. I measured pools of NH4, NO3, and PO4, in addition to total C and N content of the soils of salt marshes and cranberry bogs, each under two different
Qualitative analysis of Zircaloy-4 cladding air degradation in O2-N2 mixtures at high temperature
Boyer, Edmond
. Thermogravimetry, optical microscopy, scanning electron microscopy and energy dispersive X-ray spectrometry1 Qualitative analysis of Zircaloy-4 cladding air degradation in O2-N2 mixtures at high temperature Email: M. Lasserre (marina.lasserre@irsn.fr) Keywords: Zircaloy-4; thermogravimetry; high temperature
Probing the Vibrational Relaxation of N2 and O2 by Use of CARS Spectroscopy to Model NTE-Turbulence
Dean, Jacob
2009-06-09T23:59:59.000Z
-thermochemical equilibrium (NTE) exists downstream of strong shock fronts and encountered in the shear layers from hypersonic flight, and coupled with turbulence, it has significant effects on flow dynamics. NTE, characterized by high vibrational temperatures of N2 and O2...
Permutation groups, minimal degrees and quantum computing
Julia Kempe; Laszlo Pyber; Aner Shalev
2006-07-28T23:59:59.000Z
We study permutation groups of given minimal degree without the classical primitivity assumption. We provide sharp upper bounds on the order of a permutation group of minimal degree m and on the number of its elements of any given support. These results contribute to the foundations of a non-commutative coding theory. A main application of our results concerns the Hidden Subgroup Problem for the symmetric group in Quantum Computing. We completely characterize the hidden subgroups of the symmetric group that can be distinguished from identity with weak Quantum Fourier Sampling, showing these are exactly the subgroups with bounded minimal degree. This implies that the weak standard method for the symmetric group has no advantage whatsoever over classical exhaustive search.
Approximate error conjugation gradient minimization methods
Kallman, Jeffrey S
2013-05-21T23:59:59.000Z
In one embodiment, a method includes selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, calculating an approximate error using the subset of rays, and calculating a minimum in a conjugate gradient direction based on the approximate error. In another embodiment, a system includes a processor for executing logic, logic for selecting a subset of rays from a set of all rays to use in an error calculation for a constrained conjugate gradient minimization problem, logic for calculating an approximate error using the subset of rays, and logic for calculating a minimum in a conjugate gradient direction based on the approximate error. In other embodiments, computer program products, methods, and systems are described capable of using approximate error in constrained conjugate gradient minimization problems.
Effective Fouling Minimization Increases the Efficiency and Productivi...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Effective Fouling Minimization Increases the Efficiency and Productivity of Refineries Effective Fouling Minimization Increases the Efficiency and Productivity of Refineries This...
New Report States That Hydrokinetic Turbines Have Minimal Environmenta...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Report States That Hydrokinetic Turbines Have Minimal Environmental Impacts on Fish New Report States That Hydrokinetic Turbines Have Minimal Environmental Impacts on Fish August...
Sustainability for the Global Biofuels Industry: Minimizing Risks...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Sustainability for the Global Biofuels Industry: Minimizing Risks and Maximizing Opportunities Sustainability for the Global Biofuels Industry: Minimizing Risks and Maximizing...
Minimizing radiation damage in nonlinear optical crystals
Cooke, D. Wayne (Santa Fe, NM); Bennett, Bryan L. (Los Alamos, NM); Cockroft, Nigel J. (Santa Fe, NM)
1998-01-01T23:59:59.000Z
Methods are disclosed for minimizing laser induced damage to nonlinear crystals, such as KTP crystals, involving various means for electrically grounding the crystals in order to diffuse electrical discharges within the crystals caused by the incident laser beam. In certain embodiments, electrically conductive material is deposited onto or into surfaces of the nonlinear crystals and the electrically conductive surfaces are connected to an electrical ground. To minimize electrical discharges on crystal surfaces that are not covered by the grounded electrically conductive material, a vacuum may be created around the nonlinear crystal.
Minimizing radiation damage in nonlinear optical crystals
Cooke, D.W.; Bennett, B.L.; Cockroft, N.J.
1998-09-08T23:59:59.000Z
Methods are disclosed for minimizing laser induced damage to nonlinear crystals, such as KTP crystals, involving various means for electrically grounding the crystals in order to diffuse electrical discharges within the crystals caused by the incident laser beam. In certain embodiments, electrically conductive material is deposited onto or into surfaces of the nonlinear crystals and the electrically conductive surfaces are connected to an electrical ground. To minimize electrical discharges on crystal surfaces that are not covered by the grounded electrically conductive material, a vacuum may be created around the nonlinear crystal. 5 figs.
Unlocking the Standard Model. IV. N=2 generations of quarks : spectrum and mixing
Machet, Bruno
2013-01-01T23:59:59.000Z
The Glashow-Salam-Weinberg model for 2 generations of quarks is extended to 8 composite Higgs multiplets, with no adjunction of extra fermions. It is the minimal number of Higgs doublets required to suitably account, simultaneously, for the spectrum of pseudoscalar mesons that can be built with 4 quarks and for the mass of the W gauge bosons. These masses being used as input, together with elementary low energy considerations for the pions, we calculate all other parameters, masses and couplings. We focus in this work on the spectrum of the 8 Higgs bosons (which all potentially contribute to the W and quark masses), and on the mixing (Cabibbo) angle, leaving the study of couplings to a subsequent work. The Higgs bosons fall into one triplet, two doublets and one singlet. In the triplet stand three states with masses \\sqrt{2} x that of heaviest pseudoscalar meson D_s, which, for 2 generations, pushes them up to 2.80 GeV. The 2 components of the first doublet have masses close to 1.25 GeV. The singlet has a mas...
Innovative Concepts Phase I: Inorganic Membranes for CO2/N2 Separation
William Desisto
2003-09-23T23:59:59.000Z
Silica membranes were prepared using a novel technique of catalyzed-atomic layer deposition of silica within a mesoporous matrix. Pyridine was used to catalyze the silicon chloride attachment to the hydroxylated silica surface at room temperature. This half-reaction was followed by the hydration of the surface with water regenerating surface hydroxyls and completing one reaction cycle. The technique resulted in the self-limited pore size reduction of the mesoporous matrix to pore sizes near 1 nm. The self-limited reaction was presumed to be the exclusion of the large catalyst molecule from the pore entrance. In addition to pore size reduction, viscous flow defects were repaired without significantly reducing overall porosity of the membrane. In addition, we investigated the ability of amine-functionalization to enhance the CO{sub 2} transport in silica membranes. Specifically, we examined three synthesis techniques for functionalizing silica membranes with amino groups that resulted in different surface chemistries of the silica membranes. These differences were correlated with changes in the CO{sub 2} facilitation characteristics. It was found that high loadings of amino groups where interaction with the silica surface was minimized promoted the highest CO{sub 2} transport.
Minimize environmental impacts when replacing underground pipe
Miller, L.R. [Ashland Petroleum Co., Catlettsburg, KY (United States); Kroll, T.R. [Insituform Technologies, Inc., Memphis, TN (United States)
1997-02-01T23:59:59.000Z
A US refiner urgently needed to repair a 40-year-old oily-water sewer system without disrupting processing operations. Equally important, the refiner wanted to minimize soil and groundwater contamination. In this case history, the refiner elected to use an alternative method--trenchless rehabilitation--to make required underground repairs.
Free Parameters and Frameworks in Minimal Supersymmetry
California at Berkeley, University of
405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coe#cients of the ``soft
Free Parameters and Frameworks in Minimal Supersymmetry
California at Berkeley, University of
405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coefficients of the "soft
Minimizing incomplete automata Marie-Pierre Beal
Paris-Sud XI, UniversitÃ© de
Minimizing incomplete automata Marie-Pierre BÂ´eal Maxime Crochemore March 17, 2008 Abstract We-Monge, 77454 Marne-la-VallÂ´ee Cedex 2, France. beal@univ-mlv.fr King's College London, Strand, London WC2R 2LS
Minimizing local automata Marie-Pierre Beal
Boyer, Edmond
Minimizing local automata Marie-Pierre BÂ´eal Institut Gaspard-Monge University of Marne-la-VallÂ´ee, CNRS 77454 Marne-la-VallÂ´ee Cedex 2, France beal@univ-mlv.fr Maxime Crochemore Institut Gaspard
S. V. Begun; O. G. Druzheruchenko; O. O. Pupirina; V. K. Tarakanov
2007-01-23T23:59:59.000Z
The cross sections of 70Ge(n,2n)69Ge, 72Ge(n,2n)71Ge, 76Ge(n,gamma)77(g+0.21m)Ge, 76Ge(n,2n)75Ge nuclear reactions were measured at the energy of neutrons 13.96(6) MeV by activation method with gamma-ray and X-ray spectra studies.
Shumack, A. E.; Schram, D. C.; Biesheuvel, J.; Goedheer, W. J.; Rooij, G. J. van [FOM-Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, Nieuwegein (Netherlands)
2011-03-15T23:59:59.000Z
Ion and neutral parameters are determined in the high electron density, magnetized, hydrogen plasma beam of an ITER divertor relevant plasma via measurements of the n=2 excited neutrals. Ion rotation velocity (up to 7 km/s) and temperature (2-3 eV{approx}T{sub e}) are obtained from analysis of H{alpha} spectra measured close to the plasma source. The methodology for neutral density determination is explained whereby measurements in the linear plasma beam of Pilot-PSI are compared to modeling. Ground-state atomic densities are obtained via the production rate of n=2 and the optical thickness of the Lyman-{alpha} transition (escape factor {approx}0.6) and yield an ionization degree >85% and dissociation degree in the residual gas of {approx}4%. A 30% proportion of molecules with a rovibrational excitation of more than 2 eV is deduced from the production rate of n=2 atoms. This proportion increases by more than a factor of 4 for a doubling of the electron density in the transition to ITER divertor relevant electron densities, probably because of a large increase in the production and confinement of ground-state neutrals. Measurements are made using laser-induced fluorescence (LIF) and absorption, the suitability of which are evaluated as diagnostics for this plasma regime. Absorption is found to have a much better sensitivity than LIF, mainly owing to competition with background emission.
The structure of tame minimal dynamical systems
Eli Glasner
2006-09-18T23:59:59.000Z
A dynamical version of the Bourgain-Fremlin-Talagrand dichotomy shows that the enveloping semigroup of a dynamical system is either very large and contains a topological copy of $\\beta \\N$, or it is a "tame" topological space whose topology is determined by the convergence of sequences. In the latter case the dynamical system is called tame. We use the structure theory of minimal dynamical systems to show that, when the acting group is Abelian, a tame metric minimal dynamical system (i) is almost automorphic (i.e. it is an almost 1-1 extension of an equicontinuous system), and (ii) admits a unique invariant probability measure such that the corresponding measure preserving system is measure theoretically isomorphic to the Haar measure system on the maximal equicontinuous factor.
An algorithm for minimization of quantum cost
Anindita Banerjee; Anirban Pathak
2010-04-09T23:59:59.000Z
A new algorithm for minimization of quantum cost of quantum circuits has been designed. The quantum cost of different quantum circuits of particular interest (eg. circuits for EPR, quantum teleportation, shor code and different quantum arithmetic operations) are computed by using the proposed algorithm. The quantum costs obtained using the proposed algorithm is compared with the existing results and it is found that the algorithm has produced minimum quantum cost in all cases.
Waste Minimization: A Hidden Energy Savings?
Good, R. L.; Hunt, K. E.
WASTE MINIMIZATION: A HIDDEN ENERGY SAVINGS? R. 1. GOOD Principal Engineer, Environmental Protection and Energy Union Carbide Chemicals & Plastics Company, Inc. Seadrift, Texas ABSTRACT Several changes in the last few years have forced a re...-examination of waste generation within the petro chemical industry. In today's political/regulatory arena, industrial waste, both hazardous and non hazardous, has become an extreme potential liability in handling, storing, and disposal. Traditional methods...
Apply process integration to waste minimization
Rossiter, A.P.; Spriggs, H.D. (Linnhoff March, Inc., Leesburg, VA (United States)); Klee, H. Jr. (Amoco Corp., Chicago, IL (United States))
1993-01-01T23:59:59.000Z
This article presents a systematic method for identifying process modifications to minimize waste generation. It is based on the hierarchical decision procedure, which provides a framework for identifying process improvement options and evaluating heat and mass integration opportunities. The article deals specifically with an adaptation of the hierarchical decision approach for use in pollution abatement applications. The article also illustrates the use of the technique by applying it to the fluid catalytic cracking unit at Amoco Oil Co.'s Yorktown, VA, refinery.
Chenna, Ahmed; Gupta, Ramesh C.; Bonala, Radha R.; Johnson, Francis; Huang, Bo
2008-06-09T23:59:59.000Z
N2-(4-Hydroxyphenyl)-2'-deoxyguanosine-5'-O-DMT-3'-phosphoramidite has been synthesized and used to incorporate the N2-(4-hydroxyphenyl)-2'-dG (N2-4-HOPh-dG) into DNA, using solid-state synthesis technology. The key step to obtaining the xenonucleoside is a palladium (Xantphos-chelated) catalyzed N2-arylation (Buchwald-Hartwig reaction) of a fully protected 2'-deoxyguanosine derivative by 4-isobutyryloxybromobenzene. The reaction proceeded in good yield and the adduct was converted to the required 5'-O-DMT-3'-O-phosphoramidite by standard methods. The latter was used to synthesize oligodeoxynucleotides in which the N2-4-HOPh-dG adduct was incorporated site-specifically. The oligomers were purified by reverse-phase HPLC. Enzymatic hydrolysis and HPLC analysis confirmed the presence of this adduct in the oligomers.
Singularities in Isotropic Non-Minimal Scalar Field Models
M. Bojowald; M. Kagan
2006-04-24T23:59:59.000Z
Non-minimally coupling a scalar field to gravity introduces an additional curvature term into the action which can change the general behavior in strong curvature regimes, in particular close to classical singularities. While one can conformally transform any non-minimal model to a minimally coupled one, that transformation can itself become singular. It is thus not guaranteed that all qualitative properties are shared by minimal and non-minimal models. This paper addresses the classical singularity issue in isotropic models and extends singularity removal in quantum gravity to non-minimal models.
Minimal model for spoof acoustoelastic surface states
Christensen, J., E-mail: jochri@fotonik.dtu.dk; Willatzen, M. [Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark); Liang, Z. [College of Electronic Science and Technology, Shenzhen University, Shenzhen (China)
2014-12-15T23:59:59.000Z
Similar to textured perfect electric conductors for electromagnetic waves sustaining artificial or spoof surface plasmons we present an equivalent phenomena for the case of sound. Aided by a minimal model that is able to capture the complex wave interaction of elastic cavity modes and airborne sound radiation in perfect rigid panels, we construct designer acoustoelastic surface waves that are entirely controlled by the geometrical environment. Comparisons to results obtained by full-wave simulations confirm the feasibility of the model and we demonstrate illustrative examples such as resonant transmissions and waveguiding to show a few examples of many where spoof elastic surface waves are useful.
Status of the minimal supersymmetric SO(10)
Dorsner, Ilja [Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia and Faculty of Natural Sciences, Zmaja od Bosne 33-35, 71000 Sarajevo (Bosnia and Herzegowina)
2010-02-10T23:59:59.000Z
We discuss status of the minimal supersymmetric SO(10) in both low and split supersymmetry regime. To demonstrate viability of the model we present a good fit of the fermion masses and their mixings. The solution needs a strongly split supersymmetry with gauginos and higgsinos around 10{sup 2} TeV, sfermions close to 10{sup 14} GeV and a GUT scale of around 6x10{sup 15} GeV. It predicts fast proton decay rates, hierarchical neutrino masses and large leptonic mixing angle sin{theta}{sub 13}{approx_equal}0.1.
Liu, Ting; Jia, Ting; Zhang, Xiaoli [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)] [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Wu, Hua, E-mail: wuh@fudan.edu.cn [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China)] [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China); Zeng, Zhi, E-mail: zzeng@theory.issp.ac.cn [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China) [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China); Lin, H. Q. [Beijing Computational Science Research Center, Beijing 100084 (China)] [Beijing Computational Science Research Center, Beijing 100084 (China); Li, X. G. [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)] [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)
2014-04-15T23:59:59.000Z
Low-valence layered nickelates are a structural analog to the superconducting cuprates and possess interesting properties. In this work, we have systematically studied the electronic structure of La{sub n+1}Ni{sub n}O{sub 2n+2} using first-principles calculations. Our results reveal that the Ni-3d 3z{sup 2} ? r{sup 2} orbital state is active and evolves from discrete molecular levels to a continuous solid band and its filling varies as the dimensionality (or n) increases. The two-dimensional (2D) La{sub 3}Ni{sub 2}O{sub 6} and La{sub 4}Ni{sub 3}O{sub 8} are thus found to have a molecular insulating state. In contrast, the 3D LaNiO{sub 2} is metallic and its 3z{sup 2} ? r{sup 2} band surprisingly becomes 3D due to the Ni-La hybridization, and the La-5d xy orbital also forms a 2D metallic band. Therefore, La{sub n+1}Ni{sub n}O{sub 2n+2} is a dimensionality-controlled insulator-metal crossover system.
On N = 2 compactifications of M-theory to AdS{sub 3} using geometric algebra techniques
Babalic, E. M.; Coman, I. A.; Condeescu, C.; Micu, A. [IFIN-HH, Department of Theoretical Physics, 077125 Magurele (Romania); Lazaroiu, C. I. [IFIN-HH, Department of Theoretical Physics, 077125 Magurele, Romania and IBS, Center for Geometry and Physics, and POSTECH, Department of Mathematics, Pohang, Gyeongbuk 790-784 (Korea, Republic of)
2013-11-13T23:59:59.000Z
We investigate the most general warped compactification of eleven-dimensional supergravity on eight-dimensional manifolds to AdS{sub 3} spaces (in the presence of non-vanishing four-form flux) which preserves N = 2 supersymmetry in three dimensions. Without imposing any restrictions on the chirality of the internal part of the supersymmetry generators, we use geometric algebra techniques to study some implications of the supersymmetry constraints. In particular, we discuss the Lie bracket of certain vector fields constructed as pinor bilinears on the compactification manifold.
Minimal Bell-Kochen-Specker proofs with POVMs on qubits
A. A. Methot
2005-09-28T23:59:59.000Z
There are many different definitions of what a Bell-Kochen-Specker proof with POVMs might be. Here we present and discuss the minimal proof on qubits for three of these definitions and show that they are indeed minimal.
Power Minimization techniques for Networked Data Centers.
Low, Steven; Tang, Kevin
2011-09-28T23:59:59.000Z
Our objective is to develop a mathematical model to optimize energy consumption at multiple levels in networked data centers, and develop abstract algorithms to optimize not only individual servers, but also coordinate the energy consumption of clusters of servers within a data center and across geographically distributed data centers to minimize the overall energy cost and consumption of brown energy of an enterprise. In this project, we have formulated a variety of optimization models, some stochastic others deterministic, and have obtained a variety of qualitative results on the structural properties, robustness, and scalability of the optimal policies. We have also systematically derived from these models decentralized algorithms to optimize energy efficiency, analyzed their optimality and stability properties. Finally, we have conducted preliminary numerical simulations to illustrate the behavior of these algorithms. We draw the following conclusion. First, there is a substantial opportunity to minimize both the amount and the cost of electricity consumption in a network of datacenters, by exploiting the fact that traffic load, electricity cost, and availability of renewable generation fluctuate over time and across geographical locations. Judiciously matching these stochastic processes can optimize the tradeoff between brown energy consumption, electricity cost, and response time. Second, given the stochastic nature of these three processes, real-time dynamic feedback should form the core of any optimization strategy. The key is to develop decentralized algorithms that can be implemented at different parts of the network as simple, local algorithms that coordinate through asynchronous message passing.
Sustainability for the Global Biofuels Industry: Minimizing Risks...
Opportunities Webinar Transcript Sustainability for the Global Biofuels Industry: Minimizing Risks and Maximizing Opportunities Webinar Transcript Webinar transcript....
Debnath, Ujjal
2015-01-01T23:59:59.000Z
We have studied accretion of the dark matter and dark energy onto of $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole. The mass and the rate of change of mass for $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole have been found. We have assumed some candidates of dark energy like holographic dark energy, new agegraphic dark energy, quintessence, tachyon, DBI-essence, etc. The black hole mass and the wormhole mass have been calculated in term of redshift when dark matter and above types of dark energies accrete onto them separately. We have shown that the black hole mass increases and wormhole mass decreases for holographic dark energy, new agegraphic dark energy, quintessence, tachyon accretion and the slope of increasing/decreasing of mass sensitively depends on the dimension. But for DBI-essence accretion, the black hole mass first increases and then decreases and the wormhole mass first decreases and then increases and the slope of increasing/decreasing of mass...
Ujjal Debnath
2015-02-08T23:59:59.000Z
We have studied accretion of the dark matter and dark energy onto of $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole. The mass and the rate of change of mass for $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole have been found. We have assumed some candidates of dark energy like holographic dark energy, new agegraphic dark energy, quintessence, tachyon, DBI-essence, etc. The black hole mass and the wormhole mass have been calculated in term of redshift when dark matter and above types of dark energies accrete onto them separately. We have shown that the black hole mass increases and wormhole mass decreases for holographic dark energy, new agegraphic dark energy, quintessence, tachyon accretion and the slope of increasing/decreasing of mass sensitively depends on the dimension. But for DBI-essence accretion, the black hole mass first increases and then decreases and the wormhole mass first decreases and then increases and the slope of increasing/decreasing of mass not sensitively depends on the dimension.
Ujjal Debnath
2015-03-06T23:59:59.000Z
We have studied accretion of the dark matter and dark energy onto of $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole. The mass and the rate of change of mass for $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole have been found. We have assumed some candidates of dark energy like holographic dark energy, new agegraphic dark energy, quintessence, tachyon, DBI-essence, etc. The black hole mass and the wormhole mass have been calculated in term of redshift when dark matter and above types of dark energies accrete onto them separately. We have shown that the black hole mass increases and wormhole mass decreases for holographic dark energy, new agegraphic dark energy, quintessence, tachyon accretion and the slope of increasing/decreasing of mass sensitively depends on the dimension. But for DBI-essence accretion, the black hole mass first increases and then decreases and the wormhole mass first decreases and then increases and the slope of increasing/decreasing of mass not sensitively depends on the dimension.
What Energy Functions Can Be Minimized via Graph Cuts?
Field, David
What Energy Functions Can Be Minimized via Graph Cuts? Vladimir Kolmogorov, Member, IEEE, and Ramin been developed to solve energy minimization problems in computer vision. Each of these techniques constructs a graph such that the minimum cut on the graph also minimizes the energy. Yet, because these graph
Subspace Segmentation with A Minimal Squared Frobenius Norm Representation
Yu, Yizhou
Minimal Squared Frobenius Norm Representa- tion (MSFNR). MSFNR performs data clustering by solving benchmark [9]. However, LRR in- volves nuclear norm1 minimization. Solving LRR re- quires computing multiple Representation (MSFNR). It employs convex optimization to perform subspace clustering. The method minimizes
Minimal Liouville Gravity on the Torus via Matrix Models
Lev Spodyneiko
2014-07-14T23:59:59.000Z
In this paper we use recent results on resonance relations between the matrix models and the minimal Liouville gravity to compute the torus correlation numbers in (3,p) minimal Liouville gravity. Namely, we calculate the torus generating partition function of the (3,p) matrix models and use it to obtain the one- and two-point correlation numbers in the minimal Liouville gravity.
The Tractability Frontier for NFA Minimization Henrik Bjorklund Wim Martens
Martens, Wim
The Tractability Frontier for NFA Minimization Henrik BjÂ¨orklund Wim Martens TU Dortmund Wim Martens (TU Dortmund) Tractability Frontier for NFA Minimization June 4, 2008 1 / 24 #12;Notation NFA) Tractability Frontier for NFA Minimization June 4, 2008 2 / 24 #12;Notation NFA: (Non-Deterministic) Finite
Minimally Informative Prior Distributions for PSA
Dana L. Kelly; Robert W. Youngblood; Kurt G. Vedros
2010-06-01T23:59:59.000Z
A salient feature of Bayesian inference is its ability to incorporate information from a variety of sources into the inference model, via the prior distribution (hereafter simply “the prior”). However, over-reliance on old information can lead to priors that dominate new data. Some analysts seek to avoid this by trying to work with a minimally informative prior distribution. Another reason for choosing a minimally informative prior is to avoid the often-voiced criticism of subjectivity in the choice of prior. Minimally informative priors fall into two broad classes: 1) so-called noninformative priors, which attempt to be completely objective, in that the posterior distribution is determined as completely as possible by the observed data, the most well known example in this class being the Jeffreys prior, and 2) priors that are diffuse over the region where the likelihood function is nonnegligible, but that incorporate some information about the parameters being estimated, such as a mean value. In this paper, we compare four approaches in the second class, with respect to their practical implications for Bayesian inference in Probabilistic Safety Assessment (PSA). The most commonly used such prior, the so-called constrained noninformative prior, is a special case of the maximum entropy prior. This is formulated as a conjugate distribution for the most commonly encountered aleatory models in PSA, and is correspondingly mathematically convenient; however, it has a relatively light tail and this can cause the posterior mean to be overly influenced by the prior in updates with sparse data. A more informative prior that is capable, in principle, of dealing more effectively with sparse data is a mixture of conjugate priors. A particular diffuse nonconjugate prior, the logistic-normal, is shown to behave similarly for some purposes. Finally, we review the so-called robust prior. Rather than relying on the mathematical abstraction of entropy, as does the constrained noninformative prior, the robust prior places a heavy-tailed Cauchy prior on the canonical parameter of the aleatory model.
On how nanomechanical systems can minimize dissipation
Paolo Muratore-Ginanneschi; Kay Schwieger
2014-11-26T23:59:59.000Z
Information processing machines at the nanoscales are unavoidably affected by thermal fluctuations. Efficient design requires understanding how nanomachines can operate at minimal energy dissipation. In this letter we focus on mechanical systems controlled by smoothly varying potential forces. We show that optimal control equations come about in a natural way if the energy cost to manipulate the potential is taken into account. When such cost becomes negligible, the optimal control strategy can be constructed by transparent geometrical methods and recovers the solution of optimal mass transport equations in the overdamped limit. Our equations are equivalent to hierarchies of kinetic equations of a form well-known in the theory of dilute gases. From our results, optimal strategies for energy efficient nanosystems may be devised
Maciejewski, Anthony A.
Analyzing the Trade-offs Between Minimizing Makespan and Minimizing Energy Consumption@engr.colostate.edu, wcoliver@rams.colostate.edu, HJ@colostate.edu, aam@colostate.edu Abstract--The energy consumption of data their energy consumption while maintaining a high level of performance. Minimizing energy consumption while
Minimizing or eliminating refueling of nuclear reactor
Doncals, Richard A. (Washington, PA); Paik, Nam-Chin (Pittsburgh, PA); Andre, Sandra V. (Hempfield Township, Westmoreland County, PA); Porter, Charles A. (Rostraver Township, Westmoreland County, PA); Rathbun, Roy W. (Greensburg, PA); Schwallie, Ambrose L. (Greensburg, PA); Petras, Diane S. (Penn Township, Westmoreland County, PA)
1989-01-01T23:59:59.000Z
Demand for refueling of a liquid metal fast nuclear reactor having a life of 30 years is eliminated or reduced to intervals of at least 10 years by operating the reactor at a low linear-power density, typically 2.5 kw/ft of fuel rod, rather than 7.5 or 15 kw/ft, which is the prior art practice. So that power of the same magnitude as for prior art reactors is produced, the volume of the core is increased. In addition, the height of the core and it diameter are dimensioned so that the ratio of the height to the diameter approximates 1 to the extent practicable considering the requirement of control and that the pressure drop in the coolant shall not be excessive. The surface area of a cylinder of given volume is a minimum if the ratio of the height to the diameter is 1. By minimizing the surface area, the leakage of neutrons is reduced. By reducing the linear-power density, increasing core volume, reducing fissile enrichment and optimizing core geometry, internal-core breeding of fissionable fuel is substantially enhanced. As a result, core operational life, limited by control worth requirements and fuel burnup capability, is extended up to 30 years of continuous power operation.
Seesaw Models with Minimal Flavor Violation
Xiao-Gang He; Chao-Jung Lee; Jusak Tandean; Ya-Juan Zheng
2015-01-27T23:59:59.000Z
We explore realizations of minimal flavor violation (MFV) for leptons in the simplest seesaw models where the neutrino mass generation mechanism is driven by new fermion singlets (type I) or triplets (type III) and by a scalar triplet (type II). We also discuss similarities and differences of the MFV implementation among the three scenarios. To study the phenomenological implications, we consider a number of effective dimension-six operators that are purely leptonic or couple leptons to the standard-model gauge and Higgs bosons and evaluate constraints on the scale of MFV associated with these operators from the latest experimental information. Specifically, we employ the most recent measurements of neutrino mixing parameters as well as the currently available data on flavor-violating radiative and three-body decays of charged leptons, mu -> e conversion in nuclei, the anomalous magnetic moments of charged leptons, and their electric dipole moments. The most stringent lower-limit on the MFV scale comes from the present experimental bound on mu -> e gamma and can reach 500 TeV or higher, depending on the details of the seesaw scheme. With our numerical results, we illustrate some important differences among the seesaw types. Particularly, we show that in types I and III there are features which can bring about potentially remarkable effects which do not occur in type II. In addition, we comment on how one of the new effective operators can induce flavor-changing dilepton decays of the Higgs boson.
Fermion EDMs with Minimal Flavor Violation
Xiao-Gang He; Chao-Jung Lee; Siao-Fong Li; Jusak Tandean
2014-06-27T23:59:59.000Z
We study the electric dipole moments (EDMs) of fermions in the standard model supplemented with right-handed neutrinos and its extension including neutrino seesaw mechanism under the framework of minimal flavor violation (MFV). In the quark sector, we find that the current experimental bound on the neutron EDM does not yield a significant restriction on the scale of MFV. In addition, we consider how MFV may affect the contribution of the strong theta-term to the neutron EDM. For the leptons, the existing EDM data also do not lead to strict limits if neutrinos are Dirac particles. On the other hand, if neutrinos are Majorana in nature, we find that the constraints become substantially stronger. Moreover, the results of the latest search for the electron EDM by the ACME Collaboration are sensitive to the MFV scale of order a few hundred GeV or higher. We also look at constraints from $CP$-violating electron-nucleon interactions that have been probed in atomic and molecular EDM searches.
Extended Barzilai-Borwein method for unconstrained minimization ...
2008-05-21T23:59:59.000Z
May 20, 2008 ... Many researchers study the gradient method for minimizing a strictly ...... gence of the nonmonotone conjugate gradient method, and Raydan ...
A quasisecant method for minimizing nonsmooth functions 1 ...
2009-03-10T23:59:59.000Z
A quasisecant method for minimizing nonsmooth functions. Adil M. Bagirov and Asef Nazari Ganjehlou. Centre for Informatics and Applied Optimization, School ...
Greening PCB Drilling Process: Burr Minimization and Other Strategies
Huang, Yu-Chu; Linke, Barbara; Bhandari, Binayak; Ahn, Sung-Hoon; Dornfeld, David
2011-01-01T23:59:59.000Z
of Analytical Model for Drilling Burr Formation in DuctileJ. and Chen, L. , “Drilling Burr Formation in Titaniumfor Burr Minimization in Drilling,” PhD dissertation, The
On the Global Optimality for Linear Constrained Rank Minimization ...
Xin Liu
2014-11-10T23:59:59.000Z
Nov 10, 2014 ... Abstract: The rank minimization with linear equality constraints has two closely related models, the low rank approximation model, that is to find ...
On Minimizing the Energy Consumption of an Electrical Vehicle
Abdelkader Merakeb
2011-04-20T23:59:59.000Z
Apr 20, 2011 ... The problem that we focus on, is the minimization of the energy consumption of an electrical vehicle achievable on a given driving cycle.
Optimization Online - Nuclear norm minimization for the planted ...
Brendan Ames
2009-01-21T23:59:59.000Z
Jan 21, 2009 ... Nuclear norm minimization for the planted clique and biclique problems. Brendan Ames(bpames ***at*** math.uwaterloo.ca) Stephen ...
Minimizing Lubricant-Ash Requirement and Impact on Emission Aftertreat...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Lubricant-Ash Requirement and Impact on Emission Aftertreatment Systems via an Oil Conditioning Filter Minimizing Lubricant-Ash Requirement and Impact on Emission...
Gradient methods for convex minimization: better rates under ...
Hui Zhang
2013-03-20T23:59:59.000Z
Mar 20, 2013 ... Gradient methods for convex minimization: better rates under weaker conditions. Hui Zhang(hhuuii.zhang ***at*** gmail.com)
Geothermal: Sponsored by OSTI -- Ways to Minimize Water Usage...
Office of Scientific and Technical Information (OSTI)
Ways to Minimize Water Usage in Engineered Geothermal Systems Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About...
Analysis of Minimizers of the Lawrence-Doniach Energy for ...
2014-04-07T23:59:59.000Z
an asymptotic formula for the minimum Lawrence-Doniach energy as e and the ... In this case, an analysis of the behavior of energy minimizers and their.
Minimizers of the magnetic Ginzburg-Landau functional in simply ...
2009-08-17T23:59:59.000Z
Aug 17, 2009 ... We study the minimizers of the Ginzburg-Landau free energy ...... [8] E. B. Bogomol'nyi, The stability of classical solutions, Soviet J. Nuclear ...
Optimization Online - Minimizing Risk Exposure when the Choice of ...
Erick Delage
2015-01-30T23:59:59.000Z
Jan 30, 2015 ... Minimizing Risk Exposure when the Choice of a Risk Measure is Ambiguous. Erick Delage(erick.delage ***at*** hec.ca) Jonathan Y.
The rate of carbonic acid decomposition in sea water and its oceanographic significance
Park, Kilho
1957-01-01T23:59:59.000Z
Compressed Air Purging . . . . . . . . , . . 58 15 L6 Carbon-14 Uptake by ~la ~nas sp. in a Closed System, under 4f Carbon Dioxide Gas Purging and under N Gas Purging using Low pH Sea Water . C b -V, Uptk by~Mt ~~lt ik Cl System and under N2 Gas... and under Nitrogen Gas Purging and 4$ Carbon Dioxide Purging, using low pH Sea Water . . . . . . . . . . . . . . . . . , 63 12 Carbon-14 Uptake by Nitzuhia closterium in a Closed System and under Nitrogen Gas Purging . 1v PREFATORY' NOTE The author...
van Kessel, Chris
Towards an agronomic assessment of N2O emissions: a case study for arable crops J . W . V a n G r o e n i. Commonly, N2O emissions are expressed as a function of N application rate. This suggests that smaller fertilizer applications always lead to smaller N2O emissions. Here we argue that, because of global demand
Rigid Holography and Six-Dimensional N=(2,0) Theories on AdS_5 times S^1
Aharony, Ofer; Rey, Soo-Jong
2015-01-01T23:59:59.000Z
Field theories on anti-de Sitter (AdS) space can be studied by realizing them as low-energy limits of AdS vacua of string/M theory. In an appropriate limit, the field theories decouple from the rest of string/M theory. Since these vacua are dual to conformal field theories (CFTs), this relates some of the observables of these field theories on AdS to a subsector of the dual CFTs. We exemplify this `rigid holography' by studying in detail the 6d N=(2,0) A_{K-1} superconformal field theory (SCFT) on AdS_5xS^1, with equal radii for AdS_5 and for S^1. We choose specific boundary conditions preserving sixteen supercharges that arise when this theory is embedded into Type IIB string theory on AdS_5xS^5/Z_K. On R^{4,1}xS^1, this 6d theory has a 5(K-1)-dimensional moduli space, with unbroken 5d SU(K) gauge symmetry at (and only at) the origin. On AdS_5xS^1, the theory has a 2(K-1)-dimensional `moduli space' of supersymmetric configurations. We argue that in this case the SU(K) gauge symmetry is unbroken everywhere in...
Waste Minimization Study on Pyrochemical Reprocessing Processes
Boussier, H.; Conocar, O.; Lacquement, J. [CEA/DEN Valrho Marcoule/DRCP/SCPS/Pyrochemical Processes Laboratory, BP 17171 30207 Bagnols-sur-Ceze (France)
2006-07-01T23:59:59.000Z
Ideally a new pyro-process should not generate more waste, and should be at least as safe and cost effective as the hydrometallurgical processes currently implemented at industrial scale. This paper describes the thought process, the methodology and some results obtained by process integration studies to devise potential pyro-processes and to assess their capability of achieving this challenging objective. As example the assessment of a process based on salt/metal reductive extraction, designed for the reprocessing of Generation IV carbide spent fuels, is developed. Salt/metal reductive extraction uses the capability of some metals, aluminum in this case, to selectively reduce actinide fluorides previously dissolved in a fluoride salt bath. The reduced actinides enter the metal phase from which they are subsequently recovered; the fission products remain in the salt phase. In fact, the process is not so simple, as it requires upstream and downstream subsidiary steps. All these process steps generate secondary waste flows representing sources of actinide leakage and/or FP discharge. In aqueous processes the main solvent (nitric acid solution) has a low boiling point and evaporate easily or can be removed by distillation, thereby leaving limited flow containing the dissolved substance behind to be incorporated in a confinement matrix. From the point of view of waste generation, one main handicap of molten salt processes, is that the saline phase (fluoride in our case) used as solvent is of same nature than the solutes (radionuclides fluorides) and has a quite high boiling point. So it is not so easy, than it is with aqueous solutions, to separate solvent and solutes in order to confine only radioactive material and limit the final waste flows. Starting from the initial block diagram devised two years ago, the paper shows how process integration studies were able to propose process fittings which lead to a reduction of the waste variety and flows leading at an 'ideal' new block diagram allowing internal solvent recycling, and self eliminating reactants. This new flowsheet minimizes the quantity of inactive inlet flows that would have inevitably to be incorporated in a final waste form. The study identifies all knowledge gaps to be filled and suggest some possible R and D issues to confirm or infirm the feasibility of the proposed process fittings. (authors)
What Energy Functions can be Minimized via Graph Cuts?
Field, David
What Energy Functions can be Minimized via Graph Cuts? Vladimir Kolmogorov and Ramin Zabih Computer. In the last few years, several new algorithms based on graph cuts have been developed to solve energy cut on the graph also minimizes the energy. Yet because these graph constructions are complex
CIRCLES MINIMIZE MOST KNOT ENERGIES AARON ABRAMS, JASON CANTARELLA1
Howard, Ralph
GHOMI, AND RALPH HOWARD3 ABSTRACT. We define a new class of knot energies (known as renormalizationCIRCLES MINIMIZE MOST KNOT ENERGIES AARON ABRAMS, JASON CANTARELLA1 , JOSEPH H. G. FU2 , MOHAMMAD energies) and prove that a broad class of these energies are uniquely minimized by the round circle. Most
PSYCHOACOUSTICALLY CONSTRAINED AND DISTORTION MINIMIZED SPEECH ENHANCEMENT ALGORITHM
Yoo, Chang D.
PSYCHOACOUSTICALLY CONSTRAINED AND DISTORTION MINIMIZED SPEECH ENHANCEMENT ALGORITHM Seokhwan Jo minimized speech enhancement algorithm is considered. In general, noise reduction leads to speech distortion, and thus, the goal of an enhancement al- gorithm should reduce noise and speech distortion so that both
Transmission Completion Time Minimization in an Energy Harvesting System
Ulukus, Sennur
Transmission Completion Time Minimization in an Energy Harvesting System Jing Yang Sennur Ulukus-user energy harvesting wireless communication system. In this system, both the data packets and the harvested time is minimized. Under a deterministic system setting, we assume that the energy harvesting times
LOCAL AND GLOBAL MINIMIZERS FOR A VARIATIONAL ENERGY
Savin, Ovidiu
LOCAL AND GLOBAL MINIMIZERS FOR A VARIATIONAL ENERGY INVOLVING A FRACTIONAL NORM GIAMPIERO of the minimizers of the energy functional u 2 Hs() + W(u) dx, where u Hs() denotes the total contribution from References 38 2010 Mathematics Subject Classification. Primary 82B26, 49J45; Secondary 49Q20. Key words
UMASS: DWT INSTITUTE Jim Malley UV DISINFECTION Minimizing DBPs With
DBPs formed in the distribution system · Switching to chloramines with a short chlorine C*T · Switching Minimization strategy develop an understanding of why your specific system is generating higher than allowed constraints and operational skill and reliability · Try to minimize Chlorine use as a pre
Resource Minimized Static Mapping and Dynamic Scheduling of SDF Graphs
Ha, Soonhoi
Resource Minimized Static Mapping and Dynamic Scheduling of SDF Graphs Jinwoo Kim, Tae-ho Shin than the previous approaches. Keywords-Mapping, buffer size minimization, SDF graph, dynamic scheduling a model-based approach based on SDF (synchronous data flow) model. Since the parallelism of an application
Monitoring Massive Appliances by a Minimal Number of Smart Meters
Wang, Yongcai
56 Monitoring Massive Appliances by a Minimal Number of Smart Meters YONGCAI WANG, XIAOHONG HAO. This article presents a framework for deploying a minimal number of smart meters to accurately track the ON of required smart meters is studied by an entropy-based approach, which qualifies the impact of meter
A MINIMAL MODEL OF ENERGY MANAGEMENT IN THE BRAIN
Paris-Sud XI, Université de
a minimal model of energy management inside a single cortical area, featuring local energy storage a simple model for energy man- agement within a single cortical area. By energy management, we mean a setA MINIMAL MODEL OF ENERGY MANAGEMENT IN THE BRAIN Florian A. Dehmelt, Christian K. Machens Group
Controllers with Minimal Observation Power (Application to Timed Systems)
David, Alexandre
Controllers with Minimal Observation Power (Application to Timed Systems) Peter Bulychev1 , Franck is the computation of a subset of predicates sufficient for control and whose cost is minimal. Our solution avoids, Danish-Chinese Center for Cyber Physical Systems (IDEA4CPS) and VKR Center of Excellence MT-LAB. #12;The
Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use
1 Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use in Delivering Thermal Comfort-AC02-05CH11231. #12;Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use in Delivering thermal comfort through a different low energy space conditioning mechanism than would otherwise
National Institutes of Health: Mixed waste minimization and treatment
NONE
1995-08-01T23:59:59.000Z
The Appalachian States Low-Level Radioactive Waste Commission requested the US Department of Energy`s National Low-Level Waste Management Program (NLLWMP) to assist the biomedical community in becoming more knowledgeable about its mixed waste streams, to help minimize the mixed waste stream generated by the biomedical community, and to identify applicable treatment technologies for these mixed waste streams. As the first step in the waste minimization process, liquid low-level radioactive mixed waste (LLMW) streams generated at the National Institutes of Health (NIH) were characterized and combined into similar process categories. This report identifies possible waste minimization and treatment approaches for the LLMW generated by the biomedical community identified in DOE/LLW-208. In development of the report, on site meetings were conducted with NIH personnel responsible for generating each category of waste identified as lacking disposal options. Based on the meetings and general waste minimization guidelines, potential waste minimization options were identified.
Gary S. Groenewold; Anita K. Gianotto
2006-03-01T23:59:59.000Z
The gas-phase infrared spectra of discrete uranyl ([UO2]2+) complexes ligated with acetone and/or acetonitrile were used to evaluate systematic trends of ligation on the position of the OdUdO stretch and to enable rigorous comparison with the results of computational studies. Ionic uranyl complexes isolated in a Fourier transform ion cyclotron resonance mass spectrometer were fragmented via infrared multiphoton dissociation using a free electron laser scanned over the mid-IR wavelengths. The asymmetric OdUdO stretching frequency was measured at 1017 cm-1 for [UO2(CH3COCH3)2]2+ and was systematically red shifted to 1000 and 988 cm-1 by the addition of a third and fourth acetone ligand, respectively, which was consistent with increased donation of electron density to the uranium center in complexes with higher coordination number. The values generated computationally using LDA, B3LYP, and ZORA-PW91 were in good agreement with experimental measurements. In contrast to the uranyl frequency shifts, the carbonyl frequencies of the acetone ligands were progressively blue shifted as the number of ligands increased from two to four and approached that of free acetone. This observation was consistent with the formation of weaker noncovalent bonds between uranium and the carbonyl oxygen as the extent of ligation increases. Similar trends were observed for [UO2(CH3CN)n]2+ complexes, although the uranyl asymmetric stretching frequencies were greater than those measured for acetone complexes having equivalent coordination, which is consistent with the fact that acetonitrile is a weaker nucleophile than is acetone. This conclusion was confirmed by the uranyl stretching frequencies measured for mixed acetone/acetonitrile complexes, which showed that substitution of one acetone for one acetonitrile produced a modest red shift of 3-6 cm-1.
Wu, Ying
SUMBMISSION TO TPAMI: OOI EXTRACTION BY LOCAL-GLOBAL ENERGY MINIMIZATION 1 Iterative local-global energy minimization for automatic extraction of object of interest Gang Hua, Member, IEEE, Zicheng Liu are with the Department of Electrical Engineering and Computer Science, Northwest- ern University, 2145 Sheridan Road
An AdS{sub 3} dual for minimal model CFTs
Gaberdiel, Matthias R. [School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States); Institut fuer Theoretische Physik, ETH Zurich, CH-8093 Zuerich (Switzerland); Gopakumar, Rajesh [Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad, 211019 (India)
2011-03-15T23:59:59.000Z
We propose a duality between the 2d W{sub N} minimal models in the large N't Hooft limit, and a family of higher spin theories on AdS{sub 3}. The 2d conformal field theories (CFTs) can be described as Wess-Zumino-Witten coset models, and include, for N=2, the usual Virasoro unitary series. The dual bulk theory contains, in addition to the massless higher spin fields, two complex scalars (of equal mass). The mass is directly related to the 't Hooft coupling constant of the dual CFT. We give convincing evidence that the spectra of the two theories match precisely for all values of the 't Hooft coupling. We also show that the renormalization group flows in the 2d CFT agree exactly with the usual AdS/CFT prediction of the gravity theory. Our proposal is in many ways analogous to the Klebanov-Polyakov conjecture for an AdS{sub 4} dual for the singlet sector of large N vector models.
Hydrogen atom in momentum space with a minimal length
Djamil Bouaziz; Nourredine Ferkous
2010-09-05T23:59:59.000Z
A momentum representation treatment of the hydrogen atom problem with a generalized uncertainty relation,which leads to a minimal length ({\\Delta}X_{i})_{min}= \\hbar \\sqrt(3{\\beta}+{\\beta}'), is presented. We show that the distance squared operator can be factorized in the case {\\beta}'=2{\\beta}. We analytically solve the s-wave bound-state equation. The leading correction to the energy spectrum caused by the minimal length depends on \\sqrt{\\beta}. An upper bound for the minimal length is found to be about 10^{-9} fm.
Quantum Process Tomography via L1-norm Minimization
Robert L. Kosut
2009-03-05T23:59:59.000Z
For an initially well designed but imperfect quantum information system, the process matrix is almost sparse in an appropriate basis. Existing theory and associated computational methods (L1-norm minimization) for reconstructing sparse signals establish conditions under which the sparse signal can be perfectly reconstructed from a very limited number of measurements (resources). Although a direct extension to quantum process tomography of the L1-norm minimization theory has not yet emerged, the numerical examples presented here, which apply L1-norm minimization to quantum process tomography, show a significant reduction in resources to achieve a desired estimation accuracy over existing methods.
Müller, Peter
A Tungsten(VI) Nitride Having a W2(µ-N)2 Core Zachary J. Tonzetich, Richard R. Schrock,* Keith M-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Received September 27, 2007 The tungsten that the tungsten alkylidyne species W(C-t-Bu)(CH2-t-Bu)(OAr)2 (Ar ) 2,6-diisopropylphenyl) can be prepared readily
---Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html
- - -Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html Thursday Reserved. - - -Privacy Policy Terms of Service Community Help 12/1/04 8:49 PMFrance confident of U.S., S
Rate constants for the reactions of O+ with N2 and O2 as a function of temperature (300–1800 K)
Hierl, Peter M.; Dotan, I.; Seeley, John V.; Doren, Jane M. Van; Morris, Robert A.; Viggiano, A. A.
1997-01-01T23:59:59.000Z
We have studied the rate constants for the reaction of O+ with N2 over the temperature range 300–1600 K and the reaction of O+ with O2 over the range 300 to 1800 K. The results are in good agreement with previous measurements ...
Priscu, John C.
Supersaturated N2O in a perennially ice-covered Antarctic lake: Molecular and stable isotopic Abstract The east lobe of Lake Bonney, a permanently ice-covered lake in the McMurdo Dry Valleys2O was produced via incomplete nitrification and has undergone virtually no subsequent consumption
Milchberg, Howard
Optical Nonlinearity in Ar and N2 near the Ionization Threshold J. K. Wahlstrand, Y.-H. Cheng, Y measure the nonlinear optical response in argon and nitrogen in a thin gas target to laser intensities.103901 PACS numbers: 42.65.An, 42.65.Jx, 42.65.Re The optical Kerr effect, the intensity-dependent refrac
King Air flight RICO 2004/12/13 page 1 King Air N2UW flight report for December 13, 2004
Vali, Gabor
repair of the air conditioner on the aircraft, a test flight was needed and was to be transformedKing Air flight RICO 2004/12/13 page 1 King Air N2UW flight report for December 13, 2004 Crew: Drew, Vali, Oolman, Glover After
Topologically Stratified Energy Minimizers in a Product Abelian Field Theory
Han, Xiaosen
2015-01-01T23:59:59.000Z
The recently developed product Abelian gauge field theory by Tong and Wong hosting magnetic impurities is reformulated into an extended model that allows the coexistence of vortices and anti-vortices. The two Abelian gauge fields in the model induce two species of magnetic vortex-lines resulting from $N_s$ vortices and $P_s$ anti-vortices ($s=1,2$) realized as the zeros and poles of two complex-valued Higgs fields, respectively. An existence theorem is established for the governing equations over a compact Riemann surface $S$ which states that a solution with prescribed $N_1, N_2$ vortices and $P_1,P_2$ anti-vortices of two designated species exists if and only if the inequalities \\[ \\left|N_1+N_2-(P_1+P_2)\\right|area of $S$. The minimum energy of these solutions is shown to assume the explicit value \\...
Minimizing electricity costs with an auxiliary generator using stochastic programming
Rafiuly, Paul, 1976-
2000-01-01T23:59:59.000Z
This thesis addresses the problem of minimizing a facility's electricity costs by generating optimal responses using an auxiliary generator as the parameter of the control systems. The-goal of the thesis is to find an ...
Structural Genomics of Minimal Organisms: Pipeline and Results
Kim, Sung-Hou
2008-01-01T23:59:59.000Z
of recombinant proteins. J. Struct. Funct. Genomics 5:69-74.proteins. J. Struct. Funct. Genomics 5:69-74. Oganesyan,Structural Genomics of Minimal Organisms: Pipeline and
Absolutely minimal Lipschitz extension of tree-valued mappings
Naor, Assaf
We prove that every Lipschitz function from a subset of a locally compact length space to a metric tree has a unique absolutely minimal Lipschitz extension (AMLE). We relate these extensions to a stochastic game called ...
Geothermal Power Plants — Minimizing Land Use and Impact
Broader source: Energy.gov [DOE]
For energy production and development, geothermal power plants don't use much land compared to coal and nuclear power plants. And the environmental impact upon the land they use is minimal.
Droplet minimizers for the Cahn Hilliard free energy functional
E. A. Carlen; M. C. Carvalho; R. Esposito; J. L. Lebowitz; R. Marra
2005-05-11T23:59:59.000Z
We prove theorem characterizing the minimizers in a model for condensation based on the Cahn Hilliard free energy functional. In particular, we exactly determine the critical density for droplet formation.
Annual Waste Minimization Summary Report, Calendar Year 2008
NSTec Environmental Management
2009-02-01T23:59:59.000Z
This report summarizes the waste minimization efforts undertaken by National Security Technologies, LLC (NSTec), for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), during calendar year 2008.
Trends and Opportunities in Industrial Hazardous Waste Minimization
Atlas, M.
This paper describes trends and opportunities in Resource Conservation and Recovery Act hazardous waste minimization. It uses U.S. Environmental Protection Agency data gathered since 1989 from over 20,000 facilities that account for almost all...
A UNIFIED APPROACH FOR MINIMIZING COMPOSITE NORMS 1 ...
2012-08-06T23:59:59.000Z
We propose a first-order augmented Lagrangian algorithm (FALC) to solve the composite norm minimization problem min. X?Rm×n. µ1 ?(F(X) ? G)? + µ2 C(X)
Minimally intrusive strategies for fault detection and energy monitoring
Cox, Robert Williams, 1979-
2006-01-01T23:59:59.000Z
This thesis addresses the need for automated monitoring systems that rely on minimally intrusive sensor arrays. The monitoring techniques employed in this thesis require fewer sensors because they take a different approach ...
Scheduling to minimize power consumption using submodular functions
Zadimoghaddam, Morteza
2010-01-01T23:59:59.000Z
We develop logarithmic approximation algorithms for extremely general formulations of multiprocessor multi-interval offline task scheduling to minimize power usage. Here each processor has an arbitrary specified power ...
Minimizing High Spatial Frequency Residual in Active Space Telescope Mirrors
. Miller June 2008 SSL # 4-08 #12;#12;Minimizing High Spatial Frequency Residual in Active Space Telescope Mirrors Thomas Gray, David W. Miller June 2008 SSL # 4-08 This work is based on the unaltered text
An alternative derivation of the Minimal massive 3D gravity
Ahmet Baykal
2014-08-22T23:59:59.000Z
By using the algebra of exterior forms and the first order formalism with constraints, an alternative derivation of the field equations for the Minimal massive 3D gravity model is presented.
Complete Embedded Minimal Surfaces of Finite Total David Hoffman
Complete Embedded Minimal Surfaces of Finite Total Curvature David Hoffman Department-5300 Bonn, Germany July 18, 1994 Contents 1 Introduction 2 2 Basic theory and the global Weierstrass representation 4 2.1 Finite total curvature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2
Minimal left ideals of centralizer near-rings
Gilliam, Debbie Irene
1981-01-01T23:59:59.000Z
MINIMAL LEFT IDEALS OF CENTRALIZER NEAR- RINGS A Thesis by DEBBIE IRENE GILLIAM Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1981 Major... Subject: Mathematics NINIMAL LEFT IDEALS OF CENTRALIZER NEAR-RINGS A Thesis by DEBBIE IRENE GILLIAN Approved as to style and content by: Chai n of Committee Co-Chairman Head of D rtment) ember Nembe August 1981 ABSTRACT Minimal Left Ideals...
Waste Minimization- The Challenge of the 90's
Durham, R.
W~STE MINIMIZATION - THE CHALLENGE OF THE 90'S RICHARD DURHAM Senior Environmental Specialist Dow Chemical U.S.A. Plaquemine, Louisiana ABSTRACT Waste minimization is an environmental good news story that Dow enjoys going out... informally for years. The chemical industry has been practicing waste reduction by increasing yields, improving their processes and reducing energy requirements. If Dow or any other chemical company does not practice waste reduction, competition...
Hydrogen-atom spectrum under a minimal-length hypothesis
Sandor Benczik; Lay Nam Chang; Djordje Minic; Tatsu Takeuchi
2005-07-08T23:59:59.000Z
The energy spectrum of the Coulomb potential with minimal length commutation relations $[X_i, P_j] = i\\hbar\\{\\delta_{ij}(1+\\beta P^2) + \\beta'P_iP_j\\}$ is determined both numerically and perturbatively for arbitrary values of $\\beta'/\\beta$ and angular momenta $\\ell$. The constraint on the minimal length scale from precision hydrogen spectroscopy data is of order of a few GeV$\
Minimal Liouville Gravity correlation numbers from Douglas string equation
Alexander Belavin; Boris Dubrovin; Baur Mukhametzhanov
2014-09-11T23:59:59.000Z
We continue the study of $(q,p)$ Minimal Liouville Gravity with the help of Douglas string equation. We generalize the results of \\cite{Moore:1991ir}, \\cite{Belavin:2008kv}, where Lee-Yang series $(2,2s+1)$ was studied, to $(3,3s+p_0)$ Minimal Liouville Gravity, where $p_0=1,2$. We demonstrate that there exist such coordinates $\\tau_{m,n}$ on the space of the perturbed Minimal Liouville Gravity theories, in which the partition function of the theory is determined by the Douglas string equation. The coordinates $\\tau_{m,n}$ are related in a non-linear fashion to the natural coupling constants $\\lambda_{m,n}$ of the perturbations of Minimal Lioville Gravity by the physical operators $O_{m,n}$. We find this relation from the requirement that the correlation numbers in Minimal Liouville Gravity must satisfy the conformal and fusion selection rules. After fixing this relation we compute three- and four-point correlation numbers when they are not zero. The results are in agreement with the direct calculations in Minimal Liouville Gravity available in the literature \\cite{Goulian:1990qr}, \\cite{Zamolodchikov:2005sj}, \\cite{Belavin:2006ex}.
207Pb(n,2n{gamma})206Pb Cross-Section Measurements by In-Beam Gamma-Ray Spectroscopy
Baumann, P.; Kerveno, M.; Rudolf, G. [IReS, IN2P3, Strasbourg (France); Borcea, C. [EC, JRC, IRMM, Geel (Belgium); NIPNE, Bucarest (Romania); Jericha, E. [Technische Universitaet Wien, Wien (Austria); Jokic, S. [INN Vinca, Belgrade (Serbia and Montenegro); Lukic, S. [IReS, IN2P3, Strasbourg (France); INN Vinca, Belgrade (Serbia and Montenegro); Mihailescu, L. C.; Plompen, A. J. M. [EC, JRC, IRMM, Geel (Belgium); Pavlik, A. [Universitaet Wien, Vienna (Austria)
2006-03-13T23:59:59.000Z
207Pb(n,2n{gamma})206Pb cross section were measured for incident neutron energies between 6 and 20 MeV with the white neutron beam produced at GELINA. The {gamma}-ray production cross section for the main transition (803 keV, 2+{yields} 0+) in 206Pb is compared to results obtained at Los Alamos and to the TALYS and EMPIRE-II code predictions.
Table 4-4 on page 147); to convert from a mass-analysis to moles-per-pound-of-fuel, we need to introduce.499N2 (a.) The total of 0.666 lbmole of gas produced by this combustion of one lbm of fuel, includes condensation if the temperature dropped to or below 135.6o F. (b.) The amount of sulfurous acid produced from
Accelerating Energy Minimization using Graphics Processors* Bharat Sukhwani Martin C. Herbordt
Herbordt, Martin
Accelerating Energy Minimization using Graphics Processors* Bharat Sukhwani Martin C. Herbordt article, we present the acceleration of the energy evaluation phase of minimization on a graphics Department of Electrical and Computer Engineering, Boston University Abstract: Energy minimization
Testing a non-minimal coupling between matter and curvature
J. Páramos
2011-11-14T23:59:59.000Z
One of the most interesting and current phenomenological extensions of General Relativity is the so-called $f (R)$ class of theories; a natural generalization of this includes an explicit non-minimal coupling between matter and curvature. The purpose of this work is to present a unified view of the applicability of the latter to various contexts, ranging from astrophysical matter distributions to a cosmological setting. Various results are discussed, including the impact of this non-minimal coupling in the choice of Lagrangian density, a mechanism to mimic galactic dark matter and a Cosmological Constant at a astrophysical scale, the possibility of accounting for the accelerated expansion of the Universe and modifications to post-inflationary reheating. The equivalence between a model exhibiting a non-minimal coupling and multi-scalar-theories is also discussed.
Dynamics of non-minimally coupled perfect fluids
Bettoni, Dario
2015-01-01T23:59:59.000Z
We present a general formulation of the theory for a non-minimally coupled perfect fluid in which both conformal and disformal couplings are present. We discuss how such non-minimal coupling is compatible with the assumptions of a perfect fluid and derive both the Einstein and the fluid equations for such model. We found that, while the Euler equation is significantly modified with the introduction of an extra force related to the local gradients of the curvature, the continuity equation is unaltered, thus allowing for the definition of conserved quantities along the fluid flow. As an application to cosmology and astrophysics we compute the effects of the non-minimal coupling on a Friedmann--Lema\\^itre--Robertson--Walker background metric and on the Newtonian limit of our theory.
Waste Minimization Policy at the Romanian Nuclear Power Plant
Andrei, V.; Daian, I.
2002-02-26T23:59:59.000Z
The radioactive waste management system at Cernavoda Nuclear Power Plant (NPP) in Romania was designed to maintain acceptable levels of safety for workers and to protect human health and the environment from exposure to unacceptable levels of radiation. In accordance with terminology of the International Atomic Energy Agency (IAEA), this system consists of the ''pretreatment'' of solid and organic liquid radioactive waste, which may include part or all of the following activities: collection, handling, volume reduction (by an in-drum compactor, if appropriate), and storage. Gaseous and aqueous liquid wastes are managed according to the ''dilute and discharge'' strategy. Taking into account the fact that treatment/conditioning and disposal technologies are still not established, waste minimization at the source is a priority environmental management objective, while waste minimization at the disposal stage is presently just a theoretical requirement for future adopted technologies . The necessary operational and maintenance procedures are in place at Cernavoda to minimize the production and contamination of waste. Administrative and technical measures are established to minimize waste volumes. Thus, an annual environmental target of a maximum 30 m3 of radioactive waste volume arising from operation and maintenance has been established. Within the first five years of operations at Cernavoda NPP, this target has been met. The successful implementation of the waste minimization policy has been accompanied by a cost reduction while the occupational doses for plant workers have been maintained at as low as reasonably practicable levels. This paper will describe key features of the waste management system along with the actual experience that has been realized with respect to minimizing the waste volumes at the Cernavoda NPP.
Waste minimization in the oil and gas industries
Smith, K.P.
1992-01-01T23:59:59.000Z
Recent legislative actions place an emphasis on waste minimization as opposed to traditional end-of-pipe waste management. This new philosophy, coupled with increasing waste disposal costs and associated liabilities, sets the stage for investigating waste minimization opportunities in all industries wastes generated by oil and gas exploration and production (E P) and refuting activities are regulated as non-hazardous under the Resource Conservation and Recovery Act (RCRA). Potential reclassification of these wastes as hazardous would make minimization of these waste streams even more desirable. Oil and gas E P activities generate a wide variety of wastes, although the bulk of the wastes (98%) consists of a single waste stream: produced water. Opportunities to minimize E P wastes through point source reduction activities are limited by the extractive nature of the industry. Significant waste minimization is possible, however, through recycling. Recycling activities include underground injection of produced water, use of closed-loop drilling systems, reuse of produced water and drilling fluids in other oilfield activities, use of solid debris as construction fill, use of oily wastes as substitutes for road mix and asphalt, landspreading of produced sand for soil enhancement, and roadspreading of suitable aqueous wastes for dust suppression or deicing. Like the E P wastes, wastes generated by oil and gas treatment and refining activities cannot be reduced substantially at the point source but can be reduced through recycling. For the most part, extensive recycling and reprocessing of many waste streams already occurs at most petroleum refineries. A variety of innovative waste treatment activities have been developed to minimize the toxicity or volume of oily wastes generated by both E P and refining activities. These treatments include bioremediation, oxidation, biooxidation, incineration, and separation. Application of these treatment processes is still limited.
Waste minimization in the oil and gas industries
Smith, K.P.
1992-09-01T23:59:59.000Z
Recent legislative actions place an emphasis on waste minimization as opposed to traditional end-of-pipe waste management. This new philosophy, coupled with increasing waste disposal costs and associated liabilities, sets the stage for investigating waste minimization opportunities in all industries wastes generated by oil and gas exploration and production (E&P) and refuting activities are regulated as non-hazardous under the Resource Conservation and Recovery Act (RCRA). Potential reclassification of these wastes as hazardous would make minimization of these waste streams even more desirable. Oil and gas E&P activities generate a wide variety of wastes, although the bulk of the wastes (98%) consists of a single waste stream: produced water. Opportunities to minimize E&P wastes through point source reduction activities are limited by the extractive nature of the industry. Significant waste minimization is possible, however, through recycling. Recycling activities include underground injection of produced water, use of closed-loop drilling systems, reuse of produced water and drilling fluids in other oilfield activities, use of solid debris as construction fill, use of oily wastes as substitutes for road mix and asphalt, landspreading of produced sand for soil enhancement, and roadspreading of suitable aqueous wastes for dust suppression or deicing. Like the E&P wastes, wastes generated by oil and gas treatment and refining activities cannot be reduced substantially at the point source but can be reduced through recycling. For the most part, extensive recycling and reprocessing of many waste streams already occurs at most petroleum refineries. A variety of innovative waste treatment activities have been developed to minimize the toxicity or volume of oily wastes generated by both E&P and refining activities. These treatments include bioremediation, oxidation, biooxidation, incineration, and separation. Application of these treatment processes is still limited.
Half-prophets and Robbins' Problem of Minimizing the Expected Rank
Thomas S. Ferguson; F. Thomas Bruss
2011-01-01T23:59:59.000Z
1993) Minimizing the expected rank with full information. J.Optimal selection based on relative ranks, Israel Journal ofMinimizing the Expected Rank F. THOMAS BRUSS ? , Universit´
Fusion Rules in N=1 Superconformal Minimal Models
Pablo Minces; Ali Namazie; Carmen Nunez
1998-01-08T23:59:59.000Z
The generalization to N=1 superconformal minimal models of the relation between the modular transformation matrix and the fusion rules in rational conformal field theories, the Verlinde theorem, is shown to provide complete information about the fusion rules, including their fermionic parity. The results for the superconformal Tricritical Ising and Ashkin-Teller models agree with the known rational conformal formulation. The Coulomb gas description of correlation functions in the Ramond sector of N=1 minimal models is also discussed and a previous formulation is completed.
Black hole temperature: Minimal coupling vs conformal coupling
Fazel, Mohamadreza, E-mail: m.fazel@ph.iut.ac.ir [Department of Physics, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of); Department of Physics, University of Tehran, North Kargar Avenue, Teharn 14395-547 (Iran, Islamic Republic of); Mirza, Behrouz, E-mail: b.mirza@cc.iut.ac.ir [Department of Physics, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of); Mansoori, Seyed Ali Hosseini, E-mail: sa.hosseinimansoori@ph.iut.ac.ir [Department of Physics, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of)
2014-05-15T23:59:59.000Z
In this article, we discuss the propagation of scalar fields in conformally transformed spacetimes with either minimal or conformal coupling. The conformally coupled equation of motion is transformed into a one-dimensional Schrödinger-like equation with an invariant potential under conformal transformation. In a second stage, we argue that calculations based on conformal coupling yield the same Hawking temperature as those based on minimal coupling. Finally, it is conjectured that the quasi normal modes of black holes are invariant under conformal transformation.
Aegerter, R.
be minimally the flare manufacturer's total recommended flow. For systems with a liquid seal, the purge gas should be added downstream of the seal or designed to continuously flow through the seal at a low pressure. Excessive purge gas should not be added... problems with incorrect purge gas rates include: o Not knowing the correct purge rate o Missing restriction orifices o Improperly sized restriction orifices o Improper flow meter settings o Improperly set pressure regulators o Improper valve...
AN ENERGY-MINIMIZING INTERPOLATION FOR ROBUST MULTIGRID METHODS
Wan, Justin Wing Lok
contract W07405-Eng-48, the Department of Energy under the Accelerated Strategic Computing Initiative (ASCIAN ENERGY-MINIMIZING INTERPOLATION FOR ROBUST MULTIGRID METHODS W. L. WAN, TONY F. CHAN, AND BARRY. 1632Â1649 Abstract. We propose a robust interpolation for multigrid based on the concepts of energy
Minimizing Private Data Disclosures in the Smart Grid Weining Yang
McDaniel, Patrick Drew
Minimizing Private Data Disclosures in the Smart Grid Weining Yang Purdue University yang469@cs@cse.psu.edu Patrick McDaniel Penn State University mcdaniel@cse.psu.edu ABSTRACT Smart electric meters pose monitors, smart meter data can reveal precise home appliance usage information. An emerging solution
Comments and Controversies Lost in localization: A minimal middle way
Hamilton, Antonia
Article history: Received 19 March 2009 Revised 5 May 2009 Accepted 7 May 2009 Available online xxxx for a universal coordinate database. Neuroimage.) and Nielsen (Nielsen, F.A., 2009-this issue. Lost database and some possible approaches to creating one. I highlight the issue of minimal or maximal database
OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION
Yin, Wotao
OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION Yingying Li , Wei Computational and Applied Mathematics, Rice University ABSTRACT Early detection of oil spill events is the key in detecting the early onset of a small-scale oil spill event. Based on an infrared oil-water contrast model
Waste Minimization Plans and activities in the MFD Plating Shop
Dini, J.W.; Steffani, C.P.
1991-02-01T23:59:59.000Z
The Plating Shop (Building 322), provides processes such as electroplating, electroless plating, anodizing, cleaning, etching, electroforming and chemical milling. We in MFD are committed to an active program on waste minimization, and the purpose of this document is to outline the plan of action. Our short range minimization goals are threefold: (1) Reduce our major waste stream by 90%, (2) Minimize discharge of rinse water to sewer system, and (3) Eliminate vapor degreasing in the shop. The intermediate goals consist of characterizing the waste streams and evaluating recovery processes. To do this, we first need to have the distillation unit operational and time to determine its effectiveness. If it proves to be as effective as we anticipate, we will perhaps purchase a second unit. Regardless, the streams that we can identify include: nickel, copper, rinses, acids, alkalies, electropolish and miscellaneous. Our goal is to utilize electrolytic processes to recover metals such as nickel and copper and processes such as ion exchange for some of the other streams. We intend to evaluate the full gamut of recycling processes available for these streams. We anticipate completing this phase of the minimization program by January 1993. The long range goal is zero discharge or since this could prove extremely difficult, development of processes that will allow us to produce a sludge cake that could be handled by our Hazardous Waste Management Group.
A minimal coupling method for dissipative quantum systems
F. Kheirandish; A. Amooshahi
2005-07-20T23:59:59.000Z
Quantum dynamics of a general dissipative system investigated by its coupling to a Klein-Gordon type field as the environment by introducing a minimal coupling method. As an example, the quantum dynamics of a damped three dimensional harmonic oscillator investigated and some transition probabilities indicating the way energy flows between the subsystems obtained. The quantum dynamics of a dissipative two level system considered.
Energy Minimization in Cooperative Relay Networks with Sleep Modes
Paris-Sud XI, UniversitÃ© de
. To minimize the total energy consumption, working modes of RNs and power allocation need to be optimized dominates the total energy consumption only when the transmission range is long. As wireless net- works consumption model, the total energy con- sumption consists of transmission energy and circuit energy
Safety Shower/Eye wash They minimize injuries by four
Cohen, Robert E.
1 Safety Â Shower/Eye wash They minimize injuries by four methods. Â· Dilution;2 Using a safety shower: Â· Know exactly where the shower's water shut-off valve is located. If the unit. Â· Continue under the shower for 15 minutes before seeking medical attention. Safety Â Shower #12;Safety Â Eye
Minimization of welding residual stress and distortion in large structures
Michaleris, Panagiotis
1 Minimization of welding residual stress and distortion in large structures P. Michaleris at Champaign Urbana, Urbana, IL Abstract Welding distortion in large structures is usually caused by buckling due to the residual stress. In cases where the design is fixed and minimum weld size requirements
Rank/sparsity minimization and latent variable graphical model selection
Parrilo, Pablo A.
Rank/sparsity minimization and latent variable graphical model selection Pablo A. Parrilo Â· Complication: latent variables Â· Rank/sparsity decomposition, and generalizations Â· Convex optimization cond. on other vars. 1 3 2 4 Sparse Low-rank Concentration matrix #12;Proposal for modeling Â· Decompose
Truffles --Secure File Sharing With Minimal System Administrator Intervention
California at Los Angeles, University of
Truffles -- Secure File Sharing With Minimal System Administrator Intervention Peter Reiher Thomas sharing between arbitrary users at arbitrary sites connected by a network. Truffles is an interesting the potential of greatly increasing the workload of system administrators, if the services are not designed
Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization
Poovendran, Radha
Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization Sidharth Nabar energy consumption while limiting the latency in data transfer. In this paper, we focus on polling energy consumption and latency. We show that this problem can be posed as a geometric program, which
Utilizing Mobility to Minimize the Total Communication and Motion Energy
Mostofi, Yasamin
Utilizing Mobility to Minimize the Total Communication and Motion Energy Consumption of a Robotic costs. However, simplified path loss models are utilized to model the communication channels. In Yan Operation Yuan Yan and Yasamin Mostofi Department of Electrical and Computer Engineering University
Structured Deformations as Energy Minimizers in Models of Fracture and
Structured Deformations as Energy Minimizers in Models of Fracture and Hysteresis R. Choksi and for a bar experiencing both smooth exten- sion and macroscopic fractures then are determined, and applications to the shearing of single crystals and to the cohesive fracture of solids are discussed. Yield
no switch: spontaneous actin polymerization (MINIMAL ACTIVTY) FractionActin
Lim, Wendell
polymerization (MINIMAL ACTIVTY) FractionActin Polymerization relative activity = t1/2 / t1/2 max actin polymerization in presence of constitutively active output domain (VCA) (MAXIMAL ACTIVITY) experimental point: actin polymerization of switch in presence/absence of inputs (EXPERIMENTAL ACTIVITY) t1/2 = time
Global minimization of rational functions using semidefinite programming
Neumaier, Arnold
) with p and q relatively prime. We will consider the optimization problem: p := inf xS p(x) q(x) where prime. We will consider the optimization problem: p := inf xS p(x) q(x) where S is the semi.); Â· stability analysis of certain dynamical systems, including biochemical reactor models. Global minimization
BRAIN AND SURFACE WARPING VIA MINIMIZING LIPSCHITZ EXTENSIONS
BRAIN AND SURFACE WARPING VIA MINIMIZING LIPSCHITZ EXTENSIONS By Facundo MÂ´emoli Guillermo SapiroÂ0436 Phone: 612/624-6066 Fax: 612/626-7370 URL: http://www.ima.umn.edu #12;Brain and Surface Warping via connection with the infinity Laplacian, a computational framework for surface warping and in particular brain
Steiner Minimal Trees, Twist Angles, and the Protein Folding Problem
Smith, J. MacGregor
Steiner Minimal Trees, Twist Angles, and the Protein Folding Problem J. MacGregor Smith, Yunho Jang. These properties should be ultimately useful in the ab ini- tio protein folding prediction. Proteins 2007;66:889Â 902. VVC 2006 Wiley-Liss, Inc. Key words: Steiner trees; twist angles; protein fold- ing; side chain
Computing hypersurfaces which minimize surface energy plus bulk energy
Sullivan, John M.
the energy of an interface surface, where the energy might be just area, or could have a density dependent curvature associated to the energy density ; if 1 so that the surface energy is just area[Page 17] Computing hypersurfaces which minimize surface energy plus bulk energy John M. Sullivan
Jetway: Minimizing Costs on Inter-Datacenter Video Traffic
Li, Baochun
Jetway: Minimizing Costs on Inter-Datacenter Video Traffic Yuan Feng, Baochun Li Department deploy a number of datacenters inter-connected by high-capacity links, spanning different geographical-to-customer video serving, constitutes a large portion of a cloud provider's inter- datacenter traffic. Charged
Minimal Schemes for Large Neutrino Mixings with Inverted Hierarchy
Duane A. Dicus; Hong-Jian He; John N. Ng
2002-05-17T23:59:59.000Z
Existing oscillation data point to nonzero neutrino masses with large mixings. We analyze the generic features of the neutrino Majorana mass matrix with inverted hierarchy and construct realistic {\\it minimal schemes} for the neutrino mass matrix that can explain the large (but not maximal) \
Buffer Minimization in Pass Transistor Logic Advanced Technology Group
Zhou, Hai
function cells and four inverters with various drive capabilities. The approach in [2] also utilizesBuffer Minimization in Pass Transistor Logic Hai Zhou Advanced Technology Group Synopsys, Inc are inverters, where phase assignment need to be done with buffer insertion. Exper iments are done on MCNC
Heat Source Identification Based on L1 Constrained Minimization
Soatto, Stefano
problem, which was shown to be very efficient for sparse recovery. For the heat source identificationHeat Source Identification Based on L1 Constrained Minimization Yingying Li Stanley Osher Richard to the heat equation is considered. The initial data is assumed to be a sum of an unknown but finite number
averaged energy minimization: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
averaged energy minimization First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Averaged Energy...
THE MINIMIZATION OF THE NUMBER OF STOPS S. Deleplanque13
Paris-Sud XI, UniversitÃ© de
and to optimize the consumption, predicting the vehicle`s return to the depot. With energy manage- ment. The objective is to minimize the number of times the vehicles stop. Since those are autonomous vehicles (they of the number of served clients. Keywords: Autonomous Vehicle, Vehicle Scheduling, ILP, Reliability Introduction
Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.; Penner, Larry R.; Gerdemann, Stephen J.
2005-01-01T23:59:59.000Z
Accurate prediction of the processes in Integrated Pollutant Removal (IPR) using compression and condensation of coal combustion products requires an understanding of the liquid/vapor ternary CO2/O2/N2 system. At conditions close to the critical point of CO2 the existing equations of state deviate from the sparse measured results available in the literature. Building on existing data and procedures, the USDOE/Albany Research Center has designed an apparatus for examining compositions in this region. The design of the apparatus and planned initial experiments are presented.
Strynadka, Natalie
UBC Centre for Blood Research: Fermentation Suite Brom A5 (F4) PDF.xls: FermentationProfile Air O2 rpm N2 Base Acid NH4OH Acetic Acid 8.6 16.0 Configuration 1 SP 4 - - - SP - 2 SP 3 0.000 Temp (oC) dO2 Fermentation (Hrs) pH rpm Temp Do OD CK (mg/50-L) MeOH (ml) dO2 (%)Temp (C) 40 20 60 80 0 100 6 8 4 2 0 10 28
The Minimal Seesaw Model at the TeV Scale
Zhang, He
2009-01-01T23:59:59.000Z
We point out that the minimal seesaw model can provide a natural framework to accommodate tiny neutrino masses, while its experimental testability and notable predictiveness are still maintained. This possibility is based on the observation that two heavy right-handed Majorana neutrinos in the minimal seesaw model may naturally emerge as a pseudo-Dirac fermion. In a specific scenario, we show that the tri-bimaximal neutrino mixing can be produced, and only the inverted neutrino mass hierarchy is allowed. The low-energy phenomena, including non-unitarity effects in neutrino oscillations, neutrinoless double-beta decays and rare lepton-flavor-violating decays of charged leptons l_alpha to l_beta + gamma, have been explored. The collider signatures of the heavy singlet neutrino are also briefly discussed.
Waste minimization and pollution prevention awareness plan. Revision 1
Not Available
1994-07-01T23:59:59.000Z
The purpose of this plan is to document Lawrence Livermore National Laboratory (LLNL) projections for present and future waste minimization and pollution prevention. The plan specifies those activities and methods that are or will be used to reduce the quantity and toxicity of wastes generated at the site. It is intended to satisfy Department of Energy (DOE) requirements. This Waste Minimization and Pollution Prevention Awareness Plan provides an overview of projected activities from FY 1994 through FY 1999. The plans are broken into site-wide and problem-specific activities. All directorates at LLNL have had an opportunity to contribute input, estimate budgets, and review the plan. In addition to the above, this plan records LLNL`s goals for pollution prevention, regulatory drivers for those activities, assumptions on which the cost estimates are based, analyses of the strengths of the projects, and the barriers to increasing pollution prevention activities.
Session: Avoiding, minimizing, and mitigating avian and bat impacts
Thelander, Carl; Kerlinger, Paul
2004-09-01T23:59:59.000Z
This session at the Wind Energy and Birds/Bats workshop consisted of two presentations followed by a discussion/question answer period. The session addressed a variety of questions related to avoiding, minimizing, and mitigating the avian and bat impacts of wind power development including: what has been learned from operating turbines and mitigating impacts where they are unavoidable, such as at Altamont Pass WRA, and should there be mitigation measures such as habitat creation or land conservation where impacts occur. Other impact minimization and mitigation approaches discussed included: location and siting evaluations; options for construction and operation of wind facilities; turbine lighting; and the physical alignment/orientation. Titles and authors of the presentations were: 'Bird Fatalities in the Altamont Pass Wind Resource Area: A Case Study, Part II' by Carl Thelander and 'Prevention and Mitigation of Avian Impacts at Wind Power Facilities' by Paul Kerlinger.
Pollution prevention and waste minimization tools workshops: Proceedings. Part 2
Not Available
1993-12-31T23:59:59.000Z
The purpose of the second workshop was to bring together representatives of DOE and DOE contractor organizations to discuss four topics: process waste assessments (PWAs), a continuation of one of the sessions held at the first workshop in Clearwater; waste minimization reporting requirements; procurement systems for waste minimization; and heating, ventilating, and air conditioning (HVAC) and replacements for chlorofluorocarbons (CFCs). The topics were discussed in four concurrent group sessions. Participants in each group were encouraged to work toward achieving two main objectives: establish a ``clear vision`` of the overall target for their session`s program, focusing not just on where the program is now but on where it should go in the long term; and determine steps to be followed to carry out the target program.
Braneworld Stars: Anisotropy Minimally Projected Onto the Brane
J Ovalle
2010-08-30T23:59:59.000Z
In the context of the Randall-Sundrum braneworld, an exhaustive and detailed description of the approach based in the minimal anisotropic consequence onto the brane, which has been successfully used to generate exact interior solutions to Einstein's field equations for static and non-uniform braneworld stars with local and non-local bulk terms, is carefully presented. It is shown that this approach allows the generation of a braneworld version for any known general relativistic solution.
Holographic dark energy with non-minimal coupling
L. N. Granda; L. D. Escobar
2009-10-03T23:59:59.000Z
We study a scalar field non-minimally coupled to the curvature, in the framework of holographic dark energy. We obtain a relation between the coupling of the scalar field and the holographic DE parameters. In the model without potential we found the EOS parameter in different regions of the parameters, giving rise to accelerated expansion. For some restrictions on the parameters, the model presents quintom behavior.
Hanford site waste minimization and pollution prevention awareness program
Kirkendall, J.R.
1996-09-23T23:59:59.000Z
This plan documents the requirements of the Hanford Site Waste Minimization/Pollution Prevention (WMin/P2) Program. The plan specifies requirements for Hanford contractors to prevent pollution from entering the environment, to conserve resources and energy, and to reduce the quantity and toxicity of hazardous, radioactive, mixed, and sanitary waste generated at Hanford. The Pollution Prevention Awareness Program required by DOE 5400.1 (DOE 1988A) is included in the Hanford WMin/P2 Program.
Minimal Stereoscopic Analysis for Imaging Atmospheric Cherenkov Telescope Arrays
S. LeBohec; C. Duke; P. Jordan
2006-08-15T23:59:59.000Z
The trajectory of a primary gamma-ray detected with an array of at least four atmospheric Cherenkov imaging telescopes can be reconstructed from the shower image centroid positions and geometrical considerations independent of the primary energy. Using only the image centroid positions some cosmic-ray discrimination is also possible. This minimal approach opens the possibility of pushing the analysis threshold to lower values, close to the hardware threshold.
Minimizing Energy Losses in Ducts | Department of Energy
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 RankCombustion |Energy UsageAUDITVehicles Â»Exchange Visitorsfor ShadeProject ManhattanMentorpMinimizing
Waste heat boiler optimization by entropy minimization principle
Reddy, B.V.; Murali, J.; Satheesh, V.S. [Vellore Engineering Coll. (India). Mechanical Engineering Dept.; Nag, P.K. [Indian Inst. of Tech., Kharagpur (India). Mechanical Engineering Dept.
1996-12-31T23:59:59.000Z
A second law analysis has been undertaken for a waste heat boiler having an economizer, evaporator and superheater. Following the principle of minimization of entropy generation, a general equation for entropy generation number is derived, which incorporates all the operating variables. By differentiating the entropy generation number equation with respect to the operating parameters, various optimization parameters can be obtained. Few illustrations have been made to see the effect of various parameters on entropy generation number.
Mixed low-level waste minimization at Los Alamos
Starke, T.P.
1998-12-01T23:59:59.000Z
During the first six months of University of California 98 Fiscal Year (July--December) Los Alamos National Laboratory has achieved a 57% reduction in mixed low-level waste generation. This has been accomplished through a systems approach that identified and minimized the largest MLLW streams. These included surface-contaminated lead, lead-lined gloveboxes, printed circuit boards, and activated fluorescent lamps. Specific waste minimization projects have been initiated to address these streams. In addition, several chemical processing equipment upgrades are being implemented. Use of contaminated lead is planned for several high energy proton beam stop applications and stainless steel encapsulated lead is being evaluated for other radiological control area applications. INEEL is assisting Los Alamos with a complete systems analysis of analytical chemistry derived mixed wastes at the CMR building and with a minimum life-cycle cost standard glovebox design. Funding for waste minimization upgrades has come from several sources: generator programs, waste management, the generator set-aside program, and Defense Programs funding to INEEL.
Alonso, J.; Trias, A.; Gaitan, V.; Alba, J.J.
1999-11-01T23:59:59.000Z
The Spanish wholesale electricity market has started on January 1, 1998. Though it is based on simple price/quantity bids, it incorporates some provisions to take thermal plant running requirements into account. This paper presents these rules and its mathematical treatment, focusing on a possible implementation of the minimum income condition, which allows thermal generators to declare minimum stable loads. It also shows another key point in the debate: whether the algorithm should minimize costs or consumer payments.
Jones, Thomas B.
. The energy audit shows thatthe change in trandiameter dropllo theleiee smpo ohat #12;#12;modes (i.e. n [ 2) at the University of Rochester also contributed financially. A. Tucker-Schwartz of UCLA suggested use of the HDFT
Kersting, Roland
structure in a gapless spin liquid system. Keywords: heat capacity; spin-ladder; Cu 2 (C5H12N2 ) 2 Cl4Heat capacity of Cu 2 (C 5 H 12 N 2 ) 2 Cl 4 in a magnetic #12;eld Masayuki Hagiwara a;1 , Hiroko, D- 30167 Hannover, Germany Abstract Heat capacity measurements down to 0.5 K in a magnetic #12;eld
Yong-Chang Huang; Qiu-Hong Huo
2009-01-13T23:59:59.000Z
Using Faddeev-Senjanovic path integral quantization for constrained Hamilton system, we quantize SU(n) N=2 supersymmetric gauge field system with non-abelian Chern-Simons topological term in 2+1 dimensions, and use consistency of a gauge condition naturally to deduce another gauge condition. Further, we get the generating functional of Green function in phase space, deduce the angular momentum based on the global canonical Noether theorem at quantum level, obtain the fractional spin of this supersymmetric system, and show that the total angular momentum has the orbital angular momentum and spin angular momentum of the non-abelian gauge field. Finally, we find out the anomalous fractional spin and discover that the fractional spin has the contributions of both the group superscript components and the A_0^s (x) charge.
Finding a Minimally Informative Dirichlet Prior Distribution Using Least Squares
Dana Kelly; Corwin Atwood
2011-03-01T23:59:59.000Z
In a Bayesian framework, the Dirichlet distribution is the conjugate distribution to the multinomial likelihood function, and so the analyst is required to develop a Dirichlet prior that incorporates available information. However, as it is a multiparameter distribution, choosing the Dirichlet parameters is less straight-forward than choosing a prior distribution for a single parameter, such as p in the binomial distribution. In particular, one may wish to incorporate limited information into the prior, resulting in a minimally informative prior distribution that is responsive to updates with sparse data. In the case of binomial p or Poisson, the principle of maximum entropy can be employed to obtain a so-called constrained noninformative prior. However, even in the case of p, such a distribution cannot be written down in closed form, and so an approximate beta distribution is used in the case of p. In the case of the multinomial model with parametric constraints, the approach of maximum entropy does not appear tractable. This paper presents an alternative approach, based on constrained minimization of a least-squares objective function, which leads to a minimally informative Dirichlet prior distribution. The alpha-factor model for common-cause failure, which is widely used in the United States, is the motivation for this approach, and is used to illustrate the method. In this approach to modeling common-cause failure, the alpha-factors, which are the parameters in the underlying multinomial aleatory model for common-cause failure, must be estimated from data that is often quite sparse, because common-cause failures tend to be rare, especially failures of more than two or three components, and so a prior distribution that is responsive to updates with sparse data is needed.
Finding A Minimally Informative Dirichlet Prior Using Least Squares
Dana Kelly
2011-03-01T23:59:59.000Z
In a Bayesian framework, the Dirichlet distribution is the conjugate distribution to the multinomial likelihood function, and so the analyst is required to develop a Dirichlet prior that incorporates available information. However, as it is a multiparameter distribution, choosing the Dirichlet parameters is less straightforward than choosing a prior distribution for a single parameter, such as p in the binomial distribution. In particular, one may wish to incorporate limited information into the prior, resulting in a minimally informative prior distribution that is responsive to updates with sparse data. In the case of binomial p or Poisson \\lambda, the principle of maximum entropy can be employed to obtain a so-called constrained noninformative prior. However, even in the case of p, such a distribution cannot be written down in the form of a standard distribution (e.g., beta, gamma), and so a beta distribution is used as an approximation in the case of p. In the case of the multinomial model with parametric constraints, the approach of maximum entropy does not appear tractable. This paper presents an alternative approach, based on constrained minimization of a least-squares objective function, which leads to a minimally informative Dirichlet prior distribution. The alpha-factor model for common-cause failure, which is widely used in the United States, is the motivation for this approach, and is used to illustrate the method. In this approach to modeling common-cause failure, the alpha-factors, which are the parameters in the underlying multinomial model for common-cause failure, must be estimated from data that are often quite sparse, because common-cause failures tend to be rare, especially failures of more than two or three components, and so a prior distribution that is responsive to updates with sparse data is needed.
Electroplating waste minimization at Lawrence Livermore National Laboratory
Dini, J.W.; Steffani, C.P.
1992-04-01T23:59:59.000Z
This paper describes efforts on waste minimization in the electroplating facility at Lawrence Livermore National Laboratory (LLNL). Issues that are covered include: elimination of cadmium plating, copper cyanide plating, hexavalent chromium plating and vapor degreasing, segregation of cyanide solutions, changing rinsing practices, recycling of rinse water, changing cleaning of aluminum parts and rejuvenation of gold plating solutions. Discussion is also presented on other issues currently being worked and these include: combining electroplating and physical vapor deposition, elimination of all cyanide plating processes, and recycling of electroless nickel and spent acid solutions.
Effective Fluid FLRW Cosmologies of Minimal Massive Gravity
Nejat Tevfik Yilmaz
2014-09-23T23:59:59.000Z
By using a solution ansatz we partially decouple the metric and the Stuckelberg sectors of the minimal massive gravity (MMGR). In this scheme for a diagonal physical metric we find the general solutions for the scalars of the theory and the particular fiducial (background) metric which leads to these solutions. Then we adopt this general formalism to construct the derivation of new FLRW cosmologies of the theory in the presence of a so-called effective ideal fluid which arises from our solution ansatz as a modifying, non-physical source for the Einstein and the corresponding Friedmann equations.
Passive magnetic bearing element with minimal power losses
Post, R.F.
1998-12-08T23:59:59.000Z
Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in US Patent No. 5,495,221 entitled ``Dynamically Stable Magnetic Suspension/Bearing System.`` The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity. 8 figs.
Passive magnetic bearing element with minimal power losses
Post, Richard F. (Walnut Creek, CA)
1998-01-01T23:59:59.000Z
Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in U.S. Patent No. 5,495,221 entitled "Dynamically Stable Magnetic Suspension/Bearing System." The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity.
Minimizing Variation in Outdoor CPV Power Ratings: Preprint
Muller, M.; Marion, B.; Rodriguez, J.; Kurtz, S.
2011-07-01T23:59:59.000Z
The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.
Noncommutative scalar field minimally coupled to nonsymmetric gravity
Kouadik, S.; Sefai, D. [Laboratory of Mechanic, Physics and Mathematical Modeling Medea University (Algeria)
2012-06-27T23:59:59.000Z
We construct a non-commutative non symmetric gravity minimally coupled model (the star product only couples matter). We introduce the action for the system considered namely a non-commutative scalar field propagating in a nontrivial gravitational background. We expand the action in powers of the anti-symmetric field and the graviton to second order adopting the assumption that the scalar is weekly coupled to the graviton. We compute the one loop radiative corrections to the self-energy of a scalar particle.
Process for minimizing solids contamination of liquids from coal pyrolysis
Wickstrom, Gary H. (Yorba Linda, CA); Knell, Everett W. (Los Alamitos, CA); Shaw, Benjamin W. (Costa Mesa, CA); Wang, Yue G. (West Covina, CA)
1981-04-21T23:59:59.000Z
In a continuous process for recovery of liquid hydrocarbons from a solid carbonaceous material by pyrolysis of the carbonaceous material in the presence of a particulate source of heat, particulate contamination of the liquid hydrocarbons is minimized. This is accomplished by removing fines from the solid carbonaceous material feed stream before pyrolysis, removing fines from the particulate source of heat before combining it with the carbonaceous material to effect pyrolysis of the carbonaceous material, and providing a coarse fraction of reduced fines content of the carbon containing solid residue resulting from the pyrolysis of the carbonaceous material before oxidizing carbon in the carbon containing solid residue to form the particulate source of heat.
On Solutions of Minimal Massive 3D Gravity
Arvanitakis, Alex S
2015-01-01T23:59:59.000Z
We look at solutions of Minimal Massive Gravity (MMG), a generalisation of Topologically Massive Gravity (TMG) that improves upon its holographic properties. It is shown that generically (in MMG parameter space) all conformally flat solutions of vacuum MMG are locally isometric to one of the two (A)dS vacua of the theory. We then couple a scalar field, and find that domain wall solutions can only interpolate between these two vacua precisely when the bulk graviton is tachyonic. Finally, we find a non-BTZ AdS black hole solution satisfying Brown-Henneaux boundary conditions, which lies within the "bulk/ boundary unitarity region".
Non minimally coupled condensate cosmologies: a phase space analysis
Sante Carloni; Stefano Vignolo; Roberto Cianci
2014-03-11T23:59:59.000Z
We present an analysis of the phase space of cosmological models based on a non minimal coupling between the geometry and a fermionic condensate. We obtain that the strong constraint coming from the Dirac equations allows a detailed design of the cosmology of these models and at the same time guarantees an evolution towards a state indistinguishable from General Relativistic cosmological models. In this light, we show how the use of some specific potentials is able to reproduce naturally two de Sitter phases separated by a power law expansion which could be an interesting model for the unification of an inflationary phase and a dark energy era.
GNEP Element:Minimize Nuclear Waste | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | Department of Energy FreeportEnergy Issues Related toDevelopMinimize
Pollution prevention and waste minimization in metal finishing
Stimetz, C.J.
1994-12-01T23:59:59.000Z
This study was done to identify pollution prevention and waste minimization opportunities in the general plating department and the printed circuit board processing department. Recommendations for certain recycle and recovery technologies were mad in order to reduce usage of acids and the volume of heavy metal sludge that is formed at the industrial Wastewater Pretreatment Facility (IWPF). Some of these technologies discussed were acid purification, electrowinning, and ion exchange. Specific technologies are prescribed for specific processes. Those plating processes where the metals can be recovered are copper, nickel, gold, cadmium, tin, lead, and rhodium.
Transpiring purging access probe for particulate laden or hazardous environments
VanOsdol, John G
2013-12-03T23:59:59.000Z
An access probe for remote-sensing access through a viewing port, viewing volume, and access port into a vessel. The physical boundary around the viewing volume is partially formed by a porous sleeve lying between the viewing volume and a fluid conduit. In a first mode of operation, a fluid supplied to the fluid conduit encounters the porous sleeve and flows through the porous material to maintain the viewing volume free of ash or other matter. When additional fluid force is needed to clear the viewing volume, the pressure of the fluid flow is increased sufficiently to slidably translate the porous sleeve, greatly increasing the flow into the viewing volume. The porous sleeve is returned to position by an actuating spring. The access probe thereby provides for alternate modes of operation based on the pressure of an actuating fluid.
JGI data loss in /projectb/sandbox area [purge]
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponsesIon/SurfacePump-TestingJEDI: Jobs andJGI data loss in
A software system for oilfield facility investment minimization
Ding, Z.X. [Coastal Corp., Houston, TX (United States); Startzman, R.A. [Texas A and M Univ., College Station, TX (United States)
1996-08-01T23:59:59.000Z
Minimizing investment in oilfield development is an important subject that has attracted a considerable amount of industry attention. One method to reduce investment involves the optimal placement and selection of production facilities. Because of the large amount of capital used in this process, saving a small percent of the total investment may represent a large monetary value. The literature reports algorithms using mathematical programming techniques that were designed to solve the proposed problem in a global optimal manner. Owing to the high-computational complexity and the lack of user-friendly interfaces for data entry and results display, mathematical programming techniques have not been given enough attention in practice. This paper describes an interactive, graphical software system that provides a global optimal solution to the problem of placement and selection of production facilities in oil-field development processes. This software system can be used as an investment minimization tool and a scenario-study simulator. The developed software system consists of five basic modules: (1) an interactive data-input unit, (2) a cost function generator, (3) an optimization unit, (4) a graphic-output display, and (5) a sensitivity-analysis unit.
The Phase-space analysis of scalar fields with non-minimally derivative coupling
Yumei Huang; Qing Gao; Yungui Gong
2014-12-28T23:59:59.000Z
We perform the dynamical analysis for the exponential scalar field with non-minimally derivative coupling. For the quintessence case, the stable fixed points are the same with and without the non-minimally derivative coupling. For the phantom case, the attractor with dark energy domination exists for the minimal coupling only. For the non-minimally derivative coupling without the standard canonical kinetic term, only the de-Sitter attractor exists, and the dark matter solution is unstable.
THE SIX GROTHENDIECK OPERATIONS ON O-MINIMAL MARIO J. EDMUNDO AND LUCA PRELLI
Edmundo, MÃ¡rio Jorge
Pillay's conjecture should be a kind of intrinsic "standard part map". O-minimality is the analytic part
A descending chain condition for groups de nable in o-minimal structures
Berarducci, Alessandro
" standard part map. In [14] the conjectures were proved in two extreme cases, when G has o-minimal dimension
Inverter Minimization in Multi-Level Logic Networks Department of ECE
Bryant, Randal E.
Inverter Minimization in Multi-Level Logic Networks Alok Jain Department of ECE Carnegie Mellon Pittsburgh, PA 15213 Abstract In this paper, we look at the problem of inverter minimization in multi approach takes a more global view and maps the problem of inverter minimization into a problem of removing
Energy 32 (2007) 335343 Minimizing the entropy production in a chemical process
Kjelstrup, Signe
Energy 32 (2007) 335Â343 Minimizing the entropy production in a chemical process Ranheim, Norway Received 2 November 2005 Abstract We minimize the total entropy production of a process of selected units, which minimized the total entropy production of the process, were found. The most important
Huang, Shao Hui; O'Sullivan, Brian [Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Xu, Wei; Zhao, Helen [Department of Biostatistics, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Chen, Duo-duo [Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario (Canada); Ringash, Jolie; Hope, Andrew [Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Razak, Albiruni [Division of Medical Oncology, Princess Margaret Cancer Centre, Toronto, Ontario (Canada); Gilbert, Ralph; Irish, Jonathan [Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Kim, John; Dawson, Laura A.; Bayley, Andrew; Cho, B.C. John [Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Goldstein, David; Gullane, Patrick [Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada); Yu, Eugene [Department of Radiology, Princess Margaret Cancer Centre, Toronto, Ontario (Canada); Perez-Ordonez, Bayardo; Weinreb, Ilan [Department of Pathology, Princess Margaret Cancer Centre, Toronto, Ontario (Canada); Waldron, John, E-mail: John.Waldron@rmp.uhn.on.ca [Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario (Canada)
2013-12-01T23:59:59.000Z
Purpose: To compare the temporal lymph node (LN) regression and regional control (RC) after primary chemoradiation therapy/radiation therapy in human papillomavirus-related [HPV(+)] versus human papillomavirus-unrelated [HPV(?)] head-and-neck cancer (HNC). Methods and Materials: All cases of N2-N3 HNC treated with radiation therapy/chemoradiation therapy between 2003 and 2009 were reviewed. Human papillomavirus status was ascertained by p16 staining on all available oropharyngeal cancers. Larynx/hypopharynx cancers were considered HPV(?). Initial radiologic complete nodal response (CR) (?1.0 cm 8-12 weeks after treatment), ultimate LN resolution, and RC were compared between HPV(+) and HPV(?) HNC. Multivariate analysis identified outcome predictors. Results: A total of 257 HPV(+) and 236 HPV(?) HNCs were identified. The initial LN size was larger (mean, 2.9 cm vs 2.5 cm; P<.01) with a higher proportion of cystic LNs (38% vs 6%, P<.01) in HPV(+) versus HPV(?) HNC. CR was achieved is 125 HPV(+) HNCs (49%) and 129 HPV(?) HNCs (55%) (P=.18). The mean post treatment largest LN was 36% of the original size in the HPV(+) group and 41% in the HPV(?) group (P<.01). The actuarial LN resolution was similar in the HPV(+) and HPV(?) groups at 12 weeks (42% and 43%, respectively), but it was higher in the HPV(+) group than in the HPV(?) group at 36 weeks (90% vs 77%, P<.01). The median follow-up period was 3.6 years. The 3-year RC rate was higher in the HPV(?) CR cases versus non-CR cases (92% vs 63%, P<.01) but was not different in the HPV(+) CR cases versus non-CR cases (98% vs 92%, P=.14). On multivariate analysis, HPV(+) status predicted ultimate LN resolution (odds ratio, 1.4 [95% confidence interval, 1.1-1.7]; P<.01) and RC (hazard ratio, 0.3 [95% confidence interval 0.2-0.6]; P<.01). Conclusions: HPV(+) LNs involute more quickly than HPV(?) LNs but undergo a more prolonged process to eventual CR beyond the time of initial assessment at 8 to 12 weeks after treatment. Post radiation neck dissection is advisable for all non-CR HPV(?)/non-CR N3 HPV(+) cases, but it may be avoided for selected non-CR N2 HPV(+) cases with a significant LN involution if they can undergo continued imaging surveillance. The role of positron emission tomography for response assessment should be investigated.
Photovoltaic array with minimally penetrating rooftop support system
Lenox, Carl J.S.
2012-10-23T23:59:59.000Z
A photovoltaic array including a plurality of photovoltaic assemblies and a plurality of mounting units. The mounting units each include an elongate rail and a plurality of leg assemblies. The rail is sized and configured to maintain a portion of at least two of the photovoltaic assemblies, with the leg assemblies extending from the rail in a spaced-apart fashion and terminating in a foot for placement against a rooftop structure for minimally penetration installation. Further, at least one of the leg assemblies can include a retractable leg. When the photovoltaic array is installed to a rooftop structure including a membrane intermittently secured to a rooftop deck, the retractable leg accommodates upward billowing of the membrane under windy conditions.
Matrix model approach to minimal Liouville gravity revisited
Belavin, V
2015-01-01T23:59:59.000Z
Using the connection with the Frobenius manifold structure, we study the matrix model description of minimal Liouville gravity (MLG) based on the Douglas string equation. Our goal is to find an exact discrete formulation of the (q,p) MLG model that intrinsically contains information about the conformal selection rules. We discuss how to modify the Frobenius manifold structure appropriately for this purposes. We propose a modification of the construction for Lee-Yang series involving the $A_{p-1}$ algebra instead of the previously used $A_1$ algebra. With the new prescription, we calculate correlators on the sphere up to four points and find full agreement with the continuous approach without using resonance transformations.
Minimizing Variation in Outdoor CPV Power Ratings (Presentation)
Muller, M.
2011-04-01T23:59:59.000Z
Presented at the 7th International Conference on Concentrating Photovoltaic Systems (CPV-7), 4-6 April 2011, Las Vegas, Nevada. The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.
Distributing many points on spheres: minimal energy and designs
Johann S. Brauchart; Peter J. Grabner
2014-11-07T23:59:59.000Z
This survey discusses recent developments in the context of spherical designs and minimal energy point configurations on spheres. The recent solution of the long standing problem of the existence of spherical $t$-designs on $\\mathbb{S}^d$ with $\\mathcal{O}(t^d)$ number of points by A. Bondarenko, D. Radchenko, and M. Viazovska attracted new interest to this subject. Secondly, D. P. Hardin and E. B. Saff proved that point sets minimising the discrete Riesz energy on $\\mathbb{S}^d$ in the hypersingular case are asymptotically uniformly distributed. Both results are of great relevance to the problem of describing the quality of point distributions on $\\mathbb{S}^d$, as well as finding point sets, which exhibit good distribution behaviour with respect to various quality measures.
A minimal and predictive $T_7$ lepton flavor 331 model
Hernández, A E Cárcamo
2015-01-01T23:59:59.000Z
We present a model based on the $SU(3)_{C}\\otimes SU(3)_{L}\\otimes U(1)_{X}$ gauge group having an extra $T_{7}\\otimes Z_{3}\\otimes Z_{14}$ flavor group, where the light active neutrino masses arise via double seesaw mechanism and the observed charged lepton mass hierarchy is a consequence of the $Z_{14}$ symmetry breaking at very high energy. In our minimal and predictive $T_7$ lepton flavor 331 model, the spectrum of neutrinos includes very light active neutrinos and heavy and very heavy sterile neutrinos. The obtained neutrino mixing parameters and neutrino mass squared splittings are compatible with the neutrino oscillation experimental data, for both normal and inverted hierarchies. The model predicts CP conservation in neutrino oscillations.
The Principle of Minimal Resistance in Non-Equilibrium Thermodynamics
Mauri, Roberto
2015-01-01T23:59:59.000Z
Analytical models describing the motion of colloidal particles in given velocity fields are presented. In addition to local approaches, leading to well known master equations such as the Langevin and the Fokker-Planck equations, a global description based on path integration is reviewed. This shows that under very broad conditions, during its evolution a dissipative system tends to minimize its energy dissipation in such a way to keep constant the Hamiltonian time rate, equal to the difference between the flux-based and the force-based Rayleigh dissipation functions. At steady state, the Hamiltonian time rate is maximized, leading to a minimum resistance principle. In the unsteady case, we consider the relaxation to equilibrium of harmonic oscillators and the motion of a Brownian particle in shear flow, obtaining results that coincide with the solution of the Fokker-Planck and the Langevin equations.
Fontes, Christopher J., E-mail: cjf@lanl.gov; Zhang, Hong Lin
2014-05-15T23:59:59.000Z
Relativistic distorted-wave collision strengths have been calculated for the 49 ?n=0 optically allowed transitions with n=2 in the 67 B-like ions with nuclear charge number Z in the range 26?Z?92. The calculations were made for the four final, or scattered, electron energies E{sup ?}=0.20, 0.42, 0.80, and 1.40, where E{sup ?} is in units of Z{sub eff}{sup 2} Ry with Z{sub eff}=Z?3.33. In the present calculations, an improved “top-up” method, which employs relativistic plane waves, was used to obtain the high partial-wave contribution for each transition, in contrast to the partial-relativistic Coulomb–Bethe approximation used in previous work by Zhang and Sampson [H.L. Zhang and D.H. Sampson, At. Data Nucl. Data Tables 56 (1994) 41]. In that earlier work, collision strengths were also provided for B-like ions, but for a more comprehensive data set consisting of all 105 ?n=0 transitions, six scattered energies and the 85 ions with Z in the range 8?Z?92. The collision strengths covered in the present work should be more accurate than the corresponding data given by Zhang and Sampson [H.L. Zhang and D.H. Sampson, At. Data Nucl. Data Tables 56 (1994) 41] and are presented here to replace those earlier results.
Kuechler, Erich R. [BioMaPS Institute and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854-8087 (United States) [BioMaPS Institute and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854-8087 (United States); Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431 (United States); York, Darrin M., E-mail: york@biomaps.rutgers.edu [BioMaPS Institute and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854-8087 (United States)
2014-02-07T23:59:59.000Z
The nucleophilic attack of a chloride ion on methyl chloride is an important prototype S{sub N}2 reaction in organic chemistry that is known to be sensitive to the effects of the surrounding solvent. Herein, we develop a highly accurate Specific Reaction Parameter (SRP) model based on the Austin Model 1 Hamiltonian for chlorine to study the effects of solvation into an aqueous environment on the reaction mechanism. To accomplish this task, we apply high-level quantum mechanical calculations to study the reaction in the gas phase and combined quantum mechanical/molecular mechanical simulations with TIP3P and TIP4P-ew water models and the resulting free energy profiles are compared with those determined from simulations using other fast semi-empirical quantum models. Both gas phase and solution results with the SRP model agree very well with experiment and provide insight into the specific role of solvent on the reaction coordinate. Overall, the newly parameterized SRP Hamiltonian is able to reproduce both the gas phase and solution phase barriers, suggesting it is an accurate and robust model for simulations in the aqueous phase at greatly reduced computational cost relative to comparably accurate ab initio and density functional models.
F O R E S T R E S E A R C H C O R P O R A T E P L A N 2 0 0 2 2 0 0 5
F O R E S T R E S E A R C H #12;C O R P O R A T E P L A N 2 0 0 2 2 0 0 5 F O R E S T R E S E A R C H Forest Research C O R P O R A T E P L A N 2 0 0 2 2 0 0 5 1 #12;C O R P O R A T E P L A N 2 0 0 2 2 0 0 5 F O R E S T R E S E A R C H Acting Chief Executive Peter Freer-Smith Forest Research
Finite element meshing approached as a global minimization process
WITKOWSKI,WALTER R.; JUNG,JOSEPH; DOHRMANN,CLARK R.; LEUNG,VITUS J.
2000-03-01T23:59:59.000Z
The ability to generate a suitable finite element mesh in an automatic fashion is becoming the key to being able to automate the entire engineering analysis process. However, placing an all-hexahedron mesh in a general three-dimensional body continues to be an elusive goal. The approach investigated in this research is fundamentally different from any other that is known of by the authors. A physical analogy viewpoint is used to formulate the actual meshing problem which constructs a global mathematical description of the problem. The analogy used was that of minimizing the electrical potential of a system charged particles within a charged domain. The particles in the presented analogy represent duals to mesh elements (i.e., quads or hexes). Particle movement is governed by a mathematical functional which accounts for inter-particles repulsive, attractive and alignment forces. This functional is minimized to find the optimal location and orientation of each particle. After the particles are connected a mesh can be easily resolved. The mathematical description for this problem is as easy to formulate in three-dimensions as it is in two- or one-dimensions. The meshing algorithm was developed within CoMeT. It can solve the two-dimensional meshing problem for convex and concave geometries in a purely automated fashion. Investigation of the robustness of the technique has shown a success rate of approximately 99% for the two-dimensional geometries tested. Run times to mesh a 100 element complex geometry were typically in the 10 minute range. Efficiency of the technique is still an issue that needs to be addressed. Performance is an issue that is critical for most engineers generating meshes. It was not for this project. The primary focus of this work was to investigate and evaluate a meshing algorithm/philosophy with efficiency issues being secondary. The algorithm was also extended to mesh three-dimensional geometries. Unfortunately, only simple geometries were tested before this project ended. The primary complexity in the extension was in the connectivity problem formulation. Defining all of the interparticle interactions that occur in three-dimensions and expressing them in mathematical relationships is very difficult.
Waste minimization in analytical chemistry through innovative sample preparation techniques.
Smith, L. L.
1998-05-28T23:59:59.000Z
Because toxic solvents and other hazardous materials are commonly used in analytical methods, characterization procedures result in significant and costly amount of waste. We are developing alternative analytical methods in the radiological and organic areas to reduce the volume or form of the hazardous waste produced during sample analysis. For the radiological area, we have examined high-pressure, closed-vessel microwave digestion as a way to minimize waste from sample preparation operations. Heated solutions of strong mineral acids can be avoided for sample digestion by using the microwave approach. Because reactivity increases with pressure, we examined the use of less hazardous solvents to leach selected contaminants from soil for subsequent analysis. We demonstrated the feasibility of this approach by extracting plutonium from a NET reference material using citric and tartaric acids with microwave digestion. Analytical results were comparable to traditional digestion methods, while hazardous waste was reduced by a factor often. We also evaluated the suitability of other natural acids, determined the extraction performance on a wider variety of soil types, and examined the extraction efficiency of other contaminants. For the organic area, we examined ways to minimize the wastes associated with the determination of polychlorinated biphenyls (PCBs) in environmental samples. Conventional methods for analyzing semivolatile organic compounds are labor intensive and require copious amounts of hazardous solvents. For soil and sediment samples, we have a method to analyze PCBs that is based on microscale extraction using benign solvents (e.g., water or hexane). The extraction is performed at elevated temperatures in stainless steel cells containing the sample and solvent. Gas chromatography-mass spectrometry (GC/MS) was used to quantitate the analytes in the isolated extract. More recently, we developed a method utilizing solid-phase microextraction (SPME) for natural water samples. In this SPME technique, a fused-silica fiber coated with a polymeric film is exposed to the sample, extraction is allowed to take place, and then the analytes are thermally desorbed for GC analysis. Unlike liquid-liquid extraction or solid-phase extraction, SPME consumes all of the extracted sample in the analysis, significantly reducing the required sample volume.
Yuan, H. K.; Kuang, A. L.; Tian, C. L.; Chen, H., E-mail: chenh@swu.edu.cn [School of Physical Science and Technology, Southwest University, Chongqing, 400715 (China)
2014-03-15T23:59:59.000Z
The structural evolutions and electronic properties of bimetallic Au{sub n–x}Pt{sub x} (n = 2–14; x ? n) clusters are investigated by using the density functional theory (DFT) with the generalized gradient approximation (GGA). The monatomic doping Au{sub n–1}Pt clusters are emphasized and compared with the corresponding pristine Au{sub n} clusters. The results reveal that the planar configurations are favored for both Au{sub n–1}Pt and Au{sub n} clusters with size up to n = 13, and the former often employ the substitution patterns based on the structures of the latter. The most stable clusters are Au{sub 6} and Au{sub 6}Pt, which adopt regular planar triangle (D{sub 3h}) and hexagon-ring (D{sub 6h}) structures and can be regarded as the preferential building units in designing large clusters. For Pt-rich bimetallic clusters, their structures can be obtained from the substitution of Pt atoms by Au atoms from the Pt{sub n} structures, where Pt atoms assemble together and occupy the center yet Au atoms prefer the apex positions showing a segregation effect. With respect to pristine Au clusters, Au{sub n}Pt clusters exhibit somewhat weaker and less pronounced odd-even oscillations in the highest occupied and lowest unoccupied molecular-orbital gaps (HOMO-LUMO gap), electron affinity (EA), and ionization potential (IP) due to the partially released electron pairing effect. The analyses of electronic structure indicate that Pt atoms in AuPt clusters would delocalize their one 6s and one 5d electrons to contribute the electronic shell closure. The sp-d hybridizations as well as the d-d interactions between the host Au and dopant Pt atoms result in the enhanced stabilities of AuPt clusters.
Photodiode arrays having minimized cross-talk between diodes
Guckel, Henry (Madison, WI); McNamara, Shamus P. (Madison, WI)
2000-10-17T23:59:59.000Z
Photodiode arrays are formed with close diode-to-diode spacing and minimized cross-talk between diodes in the array by isolating the diodes from one another with trenches that are formed between the photodiodes in the array. The photodiodes are formed of spaced regions in a base layer, each spaced region having an impurity type opposite to that of the base layer to define a p-n junction between the spaced regions and the base layer. The base layer meets a substrate at a boundary, with the substrate being much more heavily doped than the base layer with the same impurity type. The trenches extend through the base layer and preferably into the substrate. Minority carriers generated by absorption of light photons in the base layer can only migrate to an adjacent photodiode through the substrate. The lifetime and the corresponding diffusion length of the minority carriers in the substrate is very short so that all minority carriers recombine in the substrate before reaching an adjacent photodiode.
The contour method cutting assumption: error minimization and correction
Prime, Michael B [Los Alamos National Laboratory; Kastengren, Alan L [ANL
2010-01-01T23:59:59.000Z
The recently developed contour method can measure 2-D, cross-sectional residual-stress map. A part is cut in two using a precise and low-stress cutting technique such as electric discharge machining. The contours of the new surfaces created by the cut, which will not be flat if residual stresses are relaxed by the cutting, are then measured and used to calculate the original residual stresses. The precise nature of the assumption about the cut is presented theoretically and is evaluated experimentally. Simply assuming a flat cut is overly restrictive and misleading. The critical assumption is that the width of the cut, when measured in the original, undeformed configuration of the body is constant. Stresses at the cut tip during cutting cause the material to deform, which causes errors. The effect of such cutting errors on the measured stresses is presented. The important parameters are quantified. Experimental procedures for minimizing these errors are presented. An iterative finite element procedure to correct for the errors is also presented. The correction procedure is demonstrated on experimental data from a steel beam that was plastically bent to put in a known profile of residual stresses.
The Dynamically Extended Mind -- A Minimal Modeling Case Study
Tom Froese; Carlos Gershenson; David A. Rosenblueth
2013-05-08T23:59:59.000Z
The extended mind hypothesis has stimulated much interest in cognitive science. However, its core claim, i.e. that the process of cognition can extend beyond the brain via the body and into the environment, has been heavily criticized. A prominent critique of this claim holds that when some part of the world is coupled to a cognitive system this does not necessarily entail that the part is also constitutive of that cognitive system. This critique is known as the "coupling-constitution fallacy". In this paper we respond to this reductionist challenge by using an evolutionary robotics approach to create a minimal model of two acoustically coupled agents. We demonstrate how the interaction process as a whole has properties that cannot be reduced to the contributions of the isolated agents. We also show that the neural dynamics of the coupled agents has formal properties that are inherently impossible for those neural networks in isolation. By keeping the complexity of the model to an absolute minimum, we are able to illustrate how the coupling-constitution fallacy is in fact based on an inadequate understanding of the constitutive role of nonlinear interactions in dynamical systems theory.
Global Fits of the Minimal Universal Extra Dimensions Scenario
Bertone, Gianfranco; /Zurich U. /Paris, Inst. Astrophys.; Kong, Kyoungchul; /SLAC /Kansas U.; de Austri, Roberto Ruiz; /Valencia U., IFIC; Trotta, Roberto; /Imperial Coll., London
2012-06-22T23:59:59.000Z
In theories with Universal Extra-Dimensions (UED), the {gamma}{sub 1} particle, first excited state of the hypercharge gauge boson, provides an excellent Dark Matter (DM) candidate. Here we use a modified version of the SuperBayeS code to perform a Bayesian analysis of the minimal UED scenario, in order to assess its detectability at accelerators and with DM experiments. We derive in particular the most probable range of mass and scattering cross sections off nucleons, keeping into account cosmological and electroweak precision constraints. The consequences for the detectability of the {gamma}{sub 1} with direct and indirect experiments are dramatic. The spin-independent cross section probability distribution peaks at {approx} 10{sup -11} pb, i.e. below the sensitivity of ton-scale experiments. The spin-dependent cross-section drives the predicted neutrino flux from the center of the Sun below the reach of present and upcoming experiments. The only strategy that remains open appears to be direct detection with ton-scale experiments sensitive to spin-dependent cross-sections. On the other hand, the LHC with 1 fb{sup -1} of data should be able to probe the current best-fit UED parameters.
Perturbation hydrogen-atom spectrum in deformed space with minimal length
M. M. Stetsko; V. M. Tkachuk
2006-03-06T23:59:59.000Z
We study energy spectrum for hydrogen atom with deformed Heisenberg algebra leading to minimal length. We develop correct perturbation theory free of divergences. It gives a possibility to calculate analytically in the 3D case the corrections to $s$-levels of hydrogen atom caused by the minimal length. Comparing our result with experimental data from precision hydrogen spectroscopy an upper bound for the minimal length is obtained.
E-Print Network 3.0 - advanced minimally invasive Sample Search...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
and sustain human livelihoods by minimizing the spread and impact of invasive alien... 1 Invasion Biology 1958-2004: The Pursuit of Science and Conservation Mark A. Davis...
E-Print Network 3.0 - advancing minimally invasive Sample Search...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
and sustain human livelihoods by minimizing the spread and impact of invasive alien... 1 Invasion Biology 1958-2004: The Pursuit of Science and Conservation Mark A. Davis...
E-Print Network 3.0 - assisted minimally invasive Sample Search...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
and sustain human livelihoods by minimizing the spread and impact of invasive alien... 1 Invasion Biology 1958-2004: The Pursuit of Science and Conservation Mark A. Davis...
Solution of inverse dynamics problems for contour error minimization in CNC machines
Ernesto, Charlie A.; Farouki, Rida T.
2010-01-01T23:59:59.000Z
metal cut- ting mechanics, machine tool vibrations, and CNCerror minimization in CNC machines Charlie A. Ernesto · RidaAbstract For CNC machines governed by typical feed- back
Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto
2012-01-01T23:59:59.000Z
combination of the total energy consumption and the peakalso reduces the total energy consumption of the occupancyTotal and Peak Energy Consumption Minimization of Building
Necessary and Sufficient Conditions for Success of the Nuclear Norm Heuristic for Rank Minimization
Recht, Ben
Necessary and Sufficient Conditions for Success of the Nuclear Norm Heuristic for Rank Minimization this distribution satisfy our conditions for success with overwhelming probability provided the number
Exact Low-rank Matrix Recovery via Nonconvex Mp-Minimization 1 ...
2011-04-21T23:59:59.000Z
nuclear norm minimization. In this paper, we consider the nonconvex relaxations by introducing Mp-norm (0
An exact method for minimizing the total treatment time in intensity ...
2011-08-18T23:59:59.000Z
We now attempt to minimize the total treatment time by modifying our CPI .... variables, depending on the quality of the upper bound, as the obvious trivial upper ...
Guide to Setting Thermal Comfort Criteria and Minimizing Energy Use in Delivering Thermal Comfort
Regnier, Cindy
2014-01-01T23:59:59.000Z
including cost, energy and thermal comfort analysis, whichfor greatest energy benefits, prioritize thermal comfortSetting Thermal Comfort Criteria and Minimizing Energy Use
Yildiz, Bilge
% post-consumer recycled content, with the balance coming from responsibly managed sources. Energy. Economic pressures both in the United States and in other key economies around the world threaten T U M N 2 0 1 2 I N T H I S I S S U E Energy Futures Discovering solutions: Undergrads take the lead
Boris V. Tarasov
2008-04-24T23:59:59.000Z
New Mersenne conjectures. The problems of simplicity, common prime divisors and free from squares of numbers $L(n) = 2^{2n}\\pm2^n\\pm1$ are investigated. Wonderful formulas $gcd $ for numbers $L (n) $ and numbers repunit are proved.
Liu, Tianbiao L.; Rakowski DuBois, Mary; DuBois, Daniel L.; Bullock, R. Morris
2014-11-03T23:59:59.000Z
Two Ru hydride complexes (Cp*Ru(PPh2NBn2)H, 1-H and (Cp*Ru(PtBu2NBn2)H, 2-H) supported by cyclic PR2NR'2 ligands (Cp* = ?5-C5Me5; 1,5-diaza-3,7-diphosphacyclooctane, where R = Ph or tBu and R' = Bn) have been synthesized and fully characterized. Both complexes are demonstrated to be electrocatalysts for oxidation of H2 (1 atm, 22 °C) in the presence of external base, DBU (1,8-diazabicyclo[5.4.0]undec-7-ene). The turnover frequency of 2-H is 1.2 s-1, with an overpotential at Ecat/2 of 0.45 V, while catalysis by 1-H has a turnover frequency of 0.6 s-1 and an overpotential of 0.6 V at Ecat/2. Addition of H2O facilitates oxidation of H2 by 2-H and increases its turnover frequency to 1.9 s-1 while , H2O slows down the catalysis by 1-H. The different effects of H2O for 1-H and 2-H are ascribed to different binding affinities of H2O to the Ru center of the corresponding unsaturated species, [Cp*Ru(PPh2NBn2)]+ and [Cp*Ru(PPh2NBn2)]+. In addition, studies of Cp*Ru(dmpm)H (where dmpm = bis(dimethylphosphino)methane), a control complex lacking pendent amines in its diphosphine ligand, confirms the critical roles of the pendent amines of P2N2 ligands for oxidation of H2. We thank the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences, for supporting initial parts of the work. Current work is supported by the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy.
The Maximum Likelihood Ensemble Filter as a non-differentiable minimization Milija Zupanski1*
Aluffi, Paolo
as a generalization of the gradient-based unconstrained methods, such as the preconditioned conjugate-gradient a nonlinear conjugate-gradient method (e.g., Gill et al. 1981) was used for minimization of the cost function. As all other unconstrained gradient-based minimization algorithms, the nonlinear conjugate-gradient
Power Optimization Using Divide-and-Conquer Techniques for Minimization of
Potkonjak, Miodrag
Power Optimization Using Divide-and- Conquer Techniques for Minimization of the Number University of Massachusetts at Amherst We introduce an approach for power optimization using a set-and-conquer compilation technique to minimize the number of operations for general computations. Our technique optimizes
Non-chiral fusion rules, structure constants of D_m minimal models
A. Rida; T. Sami
1999-10-07T23:59:59.000Z
We present a technique to construct, for $D_{m}$ unitary minimal models, the non-chiral fusion rules which determines the operator content of the operator product algebra. Using these rules we solve the bootstrap equations and therefore determine the structure constants of these models. Through this approach we emphasize the role played by some discrete symmetries in the classification of minimal models.
Minimal Brownian Ratchet: An Exactly Solvable Model Youngki Lee,1,2
Stanley, H. Eugene
Minimal Brownian Ratchet: An Exactly Solvable Model Youngki Lee,1,2 Andrew Allison,3 Derek Abbott,3 2003) We develop an analytically solvable three-state discrete-time minimal Brownian ratchet (MBR.1103/PhysRevLett.91.220601 PACS numbers: 05.40.Ca The Brownian ratchet and pawl system was first cor- rectly
Optimal Bus Stop Spacing for Minimizing Transit Operation Cost and Robert L. Bertini2
Bertini, Robert L.
. Two cost functions are considered in the model including passenger access cost and in-vehicle1 Optimal Bus Stop Spacing for Minimizing Transit Operation Cost Huan Li1 and Robert L. Bertini2 model is generated with the aim at minimizing the operation cost without impact on transit accessibility
Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni`ere
Paris-Sud XI, UniversitÃ© de
Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni in finding the shape of the tree that minimizes the viscous energy dissipated by the fluid with a constrained of energy by viscous effects and the question of the optimization of the tree geometry arises. Important
Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni`ere
Privat, Yannick
Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni in finding the shape of the tree that minimizes the viscous energy dissipated by the fluid with a constrained on the optimal shape of a dyadic tree in which flows a Newtonian fluid. Our optimization problem consists
Distributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost
Pedram, Massoud
Distributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost Siyu Yue- ple users cooperate to perform load demand scheduling in order to minimize the electricity generation between electricity consumption and generation. On the consumption side, electric demand ramps up
A Rectilinear-Monotone Polygonal Fault Block Model for Fault-Tolerant Minimal Routing
Wang, Dajin
]. In rectangular model, all faulty nodes are grouped in dis- jointed, rectangular areas, called fault blocksA Rectilinear-Monotone Polygonal Fault Block Model for Fault-Tolerant Minimal Routing in Mesh Dajin Wang, Member, IEEE Abstract--We propose a new fault block model, Minimal-Connected-Component (MCC
Minimizing Electricity Cost: Optimization of Distributed Internet Data Centers in a
Liu, Xue
Minimizing Electricity Cost: Optimization of Distributed Internet Data Centers in a Multi-Electricity&M University, College Station, USA Email: lx@andrew.cmu.edu Abstract--The study of Cyber-Physical System (CPS, the power management problem for minimizing the total electricity cost has been overlooked
Optimization of inflow waveform phase-difference for minimized total cavopulmonary power loss
Pekkan, Kerem
Optimization of inflow waveform phase-difference for minimized total cavopulmonary power loss minimized power loss, inside the TCPC pathway is required for the best optimal surgical outcomes we focused on the characterization of power loss changes due to the temporal variations in between
A New Method for Minimizing Buffer Sizes for Cyclo-Static Dataflow Graphs
Paris-Sud XI, UniversitÃ© de
. This paper presents an original methodology to minimize the global surface of the buffers for a Cyclo for real life problems. The resolution of the optimization problem for a Reed- Solomon Decoder application that the methodology developed in [5] to minimize the surface of the buffers for a minimum fixed throughput for a SDF
Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways
Plotkin, Steven S.
Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways Ali induce dominant pathway mechanisms in protein folding. Citation: Mohazab AR, Plotkin SS (2013) Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways. PLoS ONE 8(1): e53642
Plenary title: Qualitaive features of the minimizers of energies and implications on
Nikolova, Mila
Plenary title: Qualitaive features of the minimizers of energies and implications on modelling applications that are solved by minimizing an energy function combining a data-fidelity and a regularization term. Energy functions are classically defined either from a PDE standpoint or in a Bayesian estimation
THE USE OF TRUST REGIONS IN KOHN-SHAM TOTAL ENERGY MINIMIZATION
Geddes, Cameron Guy Robinson
-consistent and the Kohn-Sham (KS) total energy function associated with the system reaches the global minimum. It has longTHE USE OF TRUST REGIONS IN KOHN-SHAM TOTAL ENERGY MINIMIZATION CHAO YANG , JUAN C. MEZA , AND LIN system, is viewed in this paper as an optimization procedure that minimizes the Kohn- Sham total energy
Schindler, Konrad
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, VOL. ?, NO. ?, MONTH 201? 1 Continuous Energy Minimization for Multi-Target Tracking Anton Milan, Student Member, IEEE, Stefan Roth-target tracking as minimization of a continuous energy. Contrary to recent approaches, we focus on designing
ON A CONJECTURE BY COFFMAN, FLATTO, AND WRIGHT ON STOCHASTIC MACHINE MINIMIZATION
Teneketzis, Demosthenis
ON A CONJECTURE BY COFFMAN, FLATTO, AND WRIGHT ON STOCHASTIC MACHINE MINIMIZATION NAH-OAK SONG, pp. 681Â687 Abstract. We investigate a conjecture stated by Coffman, Flatto, and Wright within. Coffman, Flatto, and Wright [1] considered a stochastic ma- chine minimization problem (described
Online Speed Scaling Based on Active Job Count to Minimize Flow plus Energy
Wong, Prudence W.H.
Online Speed Scaling Based on Active Job Count to Minimize Flow plus Energy Tak-Wah Lam Lap-Kei Lee research on online job scheduling has gradually taken speed scaling and energy usage into consideration algorithms that aim at minimizing the total flow time plus energy usage. The results are divided into two
System-Wide Energy Minimization for Real-Time Tasks: Lower Bound and
Xu, Cheng-Zhong
28 System-Wide Energy Minimization for Real-Time Tasks: Lower Bound and Approximation XILIANG ZHONG that minimizes system-wide energy consumption for both periodic and sporadic tasks. It is known that a system consists of processors and a number of other components. Energy-aware processors can be run in different
Zone Freezing Study for Pyrochemical Process Waste Minimization
Ammon Williams
2012-05-01T23:59:59.000Z
Pyroprocessing technology is a non-aqueous separation process for treatment of used nuclear fuel. At the heart of pyroprocessing lies the electrorefiner, which electrochemically dissolves uranium from the used fuel at the anode and deposits it onto a cathode. During this operation, sodium, transuranics, and fission product chlorides accumulate in the electrolyte salt (LiCl-KCl). These contaminates change the characteristics of the salt overtime and as a result, large volumes of contaminated salt are being removed, reprocessed and stored as radioactive waste. To reduce the storage volumes and improve recycling process for cost minimization, a salt purification method called zone freezing has been proposed at Korea Atomic Energy Research Institute (KAERI). Zone freezing is melt crystallization process similar to the vertical Bridgeman method. In this process, the eutectic salt is slowly cooled axially from top to bottom. As solidification occurs, the fission products are rejected from the solid interface and forced into the liquid phase. The resulting product is a grown crystal with the bulk of the fission products near the bottom of the salt ingot, where they can be easily be sectioned and removed. Despite successful feasibility report from KAERI on this process, there were many unexplored parameters to help understanding and improving its operational routines. Thus, this becomes the main motivation of this proposed study. The majority of this work has been focused on the CsCl-LiCl-KCl ternary salt. CeCl3-LiCl-KCl was also investigated to check whether or not this process is feasible for the trivalent species—surrogate for rare-earths and transuranics. For the main part of the work, several parameters were varied, they are: (1) the retort advancement rate—1.8, 3.2, and 5.0 mm/hr, (2) the crucible lid configurations—lid versus no-lid, (3) the amount or size of mixture—50 and 400 g, (4) the composition of CsCl in the salt—1, 3, and 5 wt%, and (5) the temperature differences between the high and low furnace zones—200 and 300 ?C. During each experiment, the temperatures at selected locations around the crucible were measured and recorded to provide temperature profiles. Following each experiment, samples were collected and elemental analysis was done to determine the composition of iii the salt. Several models—non-mixed, well-mixed, Favier, and hybrid—were explored to describe the zone freezing process. For CsCl-LiCl-KCl system, experimental results indicate that through this process up to 90% of the used salt can be recycled, effectively reducing waste volume by a factor of ten. The optimal configuration was found to be a 5.0 mm/hr rate with a lid configuration and a ?T of 200°C. The larger 400 g mixtures had recycle percentages similar to the 50 g mixtures; however, the throughput per time was greater for the 400 g case. As a result, the 400 g case is recommended. For the CeCl3-LiCl-KCl system, the result implies that it is possible to use this process to separate the rare-earth and transuranics chlorides. Different models were applied to only CsCl ternary system. The best fit model was the hybrid model as a result of a solute transport transition from non- mixed to well-mixed throughout the growing process.
Environmental Restoration Program waste minimization and pollution prevention self-assessment
Not Available
1994-10-01T23:59:59.000Z
The Environmental Restoration (ER) Program within Martin Marietta Energy Systems, Inc. is currently developing a more active waste minimization and pollution prevention program. To determine areas of programmatic improvements within the ER Waste Minimization and Pollution Prevention Awareness Program, the ER Program required an evaluation of the program across the Oak Ridge K-25 Site, the Oak Ridge National Laboratory, the Oak Ridge Y-12 Plant, the Paducah Environmental Restoration and Waste Minimization Site, and the Portsmouth Environmental Restoration and Waste Minimization Site. This document presents the status of the overall program as of fourth quarter FY 1994, presents pollution prevention cost avoidance data associated with FY 1994 activities, and identifies areas for improvement. Results of this assessment indicate that the ER Waste Minimization and Pollution Prevention Awareness Program is firmly established and is developing rapidly. Several procedural goals were met in FY 1994 and many of the sites implemented ER waste minimization options. Additional growth is needed, however, for the ER Waste Minimization and Pollution Prevention Awareness Program.
Minimal regularity conditions for the end-point estimate of bilinear Calderón-Zygmund operators
Perez, Carlos; Torres, Rodolfo H.
2014-01-09T23:59:59.000Z
(1.5) |??m(?)| #2; |?|?|?| for all |?| ? [n/2] + 1 and the weaker Ho¨rmander [14] condition (1.6) sup j?Z ?m(2j ·)??L2s(Rn) n/2, where ? is a smooth bump supported away from the origin and L2s is the usual Sobolev space, imply (1... be in the case of multipliers. If we again consider m as a Fourier multiplier in R2n, then (1.10) is just Ho¨r- mander’s condition, and we have for the kernel of the corresponding linear operator in R2n for any y, z ? Rn ? |y?y?|+|z?z?|?c|x1?y|+|x2?z| |K(x1 ? y...
Response-Time Minimization of Automotive-Inspired Dataflows on Multicore Platforms
Anderson, James
Response-Time Minimization of Automotive-Inspired Dataflows on Multicore Platforms Glenn A Abstract Dataflow software architectures are prevalent in prototypes of advanced automotive systems guarantees in these systems. Many existing automotive prototypes ensure such constraints through over
Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization
Recht, Benjamin
The affine rank minimization problem consists of finding a matrix of minimum rank that satisfies a given system of linear equality constraints. Such problems have appeared in the literature of a diverse set of fields ...
Minimizing Actuator-Induced Residual Error in Active Space Telescope Primary Mirrors
. Smith, David W. Miller September 2010 SSL #12-10 #12;#12;Minimizing Actuator-Induced Residual Error in Active Space Telescope Primary Mirrors Matthew W. Smith, David W. Miller September 2010 SSL #12
Paris-Sud XI, UniversitÃ© de
MINIMIZING THE BONDLINE THERMAL RESISTANCE IN THERMAL INTERFACE MATERIALS WITHOUT AFFECTING microstructure, and bondline thermal resistance with the tradeoffs between material systems, manufacturability of devices to heat sinks using existing commercial thermal interface materials (TIMs). The present study
A robust window-based multi-node minimization technique using Boolean relations
Cobb, Jeffrey Lee
2008-10-10T23:59:59.000Z
Multi-node optimization using Boolean relations is a powerful approach for network minimization. The approach has been studied in theory, and so far its superiority over single node optimization techniques has only been conjectured for practical...
A robust window-based multi-node minimization technique using Boolean relations
Cobb, Jeffrey Lee
2009-05-15T23:59:59.000Z
Multi-node optimization using Boolean relations is a powerful approach for network minimization. The approach has been studied in theory, and so far its superiority over single node optimization techniques has only been conjectured for practical...
Pairing of valence electrons as necessary condition for energy minimization in a crystal
Dolgopolov Stanislav Olegovich
2014-10-21T23:59:59.000Z
Pairing of valence electrons can lead to energy minimization of a crystal. It can be proved by use of representation of the valence electrons as plane waves in periodic potential of the crystal.
ENVELOPING SEMI-GROUP FOR MINIMAL ROTATIONS ON CUT UP TORI
Paris-Sud XI, UniversitÃ© de
are in general hard to identify, but the special class of topological eigen- values (the ones associatedENVELOPING SEMI-GROUP FOR MINIMAL ROTATIONS ON CUT UP TORI JEAN-BAPTISTE AUJOGUE Abstract
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.
Encoding serial data for energy-delay-product and energy minimization
Ekambavanan, Sasidharan
2009-05-15T23:59:59.000Z
: : : : : : : : : : : : : : : : : : : 38 IV.3 Results of 2-LIWT for Green Channel : : : : : : : : : : : : : : : : : : : 38 IV.4 Results of 2-LIWT for Red Channel : : : : : : : : : : : : : : : : : : : : 38 IV.5 Results of IVTM optimized for EDP minimization for Blue Channel with k = 3, n... = 5, p = 6 and R = 50 : : : : : : : : : : : : : : : : : : : : 39 IV.6 Results of IVTM optimized for EDP minimization for Green Channel with k = 3, n = 5, p = 6 and R = 50 : : : : : : : : : : : : : : : : : : : : 39 IV.7 Results of IVTM optimized for EDP...
Relativistic Approach to the Hydrogen Atom in a Minimal Length Scenario
R. O. Francisco; T. L. Antonacci Oakes; J. C. Fabris; J. A. Nogueira
2014-02-19T23:59:59.000Z
In this work we show that relativistic contributions to the ground state energy of the hydrogen atom arising from the presence of a minimal length introduced by a Lorentz-covariant algebra are more relevant than non-relativistic ones, and because of this the non-relativistic approach is not suitable. In addition, comparing our result with experimental data we can roughly estimate the upper bound for the minimal length value of the order $10^{-20}m$.
Robinson, Bradley Mason
1986-01-01T23:59:59.000Z
MINIMIZING DAMAGE TO A PROPPED FRACTURE BY CORRECT SELECTION OF PROPPANT AND CONTROLLED FLOWBACK PROCEDURES A Thesis by BRADLEY MASON ROBINSON Submitted to the Graduate College of Texas ASM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1986 Major Subject: Petroleum Engineering MINIMIZING DAMAGE TO A PROPPED FRACTURE BY CORRECT SELECTION OF PROPPANT AND CONTROLLED FLOWBACK PROCEDURES A Thesis by BRADLEY MASON ROBINSON Approved...
Chu, Xi; Chu, Shih-I
2001-11-14T23:59:59.000Z
in the exchange ~x!- only limit. In the latter approach @1#, theTime-dependent density-functional theor Study of multiphoton processes and dynam of N2 in inten Xi Chu and Department of Chemistry, University of Kansas, and Kansas Ce ~Received 30 July 2001; pu We...-I CHU PHYSICAL REVIEW A 64 0634041sg 21su 22sg 22su 21pu 43sg 2 . According to the valence bond theory, this molecule has a triple bond formed with 3sg and 1pu electrons. The 3sg orbital is parallel to the internuclear axis and the two degen- erate 1pu...
Non-minimally coupled scalar field cosmology on the phase plane
Hrycyna, Orest [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland)] [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland); Szydlowski, Marek, E-mail: hrycyna@kul.lublin.pl, E-mail: uoszydlo@cyf-kr.edu.pl [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)] [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)
2009-04-15T23:59:59.000Z
In this publication we investigate dynamics of a flat FRW cosmological model with a non-minimally coupled scalar field with the coupling term {xi}R{psi}{sup 2} in the scalar field action. The quadratic potential function V({psi}) {proportional_to} {psi}{sup 2} is assumed. All the evolutional paths are visualized and classified in the phase plane, at which the parameter of non-minimal coupling {xi} plays the role of a control parameter. The fragility of global dynamics with respect to changes of the coupling constant is studied in details. We find that the future big rip singularity appearing in the phantom scalar field cosmological models can be avoided due to non-minimal coupling constant effects. We have shown the existence of a finite scale factor singular point (future or past) where the Hubble function as well as its first cosmological time derivative diverge.
A Uniqueness Result for Minimizers of the 1D Log-gas Renormalized Energy
Thomas Leblé
2014-08-10T23:59:59.000Z
Sandier and Serfaty studied the one-dimensional Log-gas model, in particular they gave a crystallization result by showing that the one-dimensional lattice $\\mathbb{z}$ is a minimizer for the so-called renormalized energy which they obtained as a limit of the $N$-particle Log-gas Hamiltonian for $N \\to \\infty$. However, this minimizer is not unique among infinite point configurations (for example small perturbations of $\\mathbb{z}$ leave the renormalized energy unchanged). In this paper, we establish that uniqueness holds at the level of (stationary) point processes, the only minimizer being given by averaging $\\mathbb{z}$ over a choice of the origin in $[0,1]$. This is proved by showing a quantitative estimate on the two-point correlation function of a process in terms of its renormalized energy.
Mousseau, Jeffrey, D.; Jansen, John, R.; Janke, David, H.; Plowman, Catherine, M.
2003-02-26T23:59:59.000Z
Improved waste minimization practices at the Department of Energy's (DOE) Idaho National Engineering and Environmental Laboratory (INEEL) are leading to a 15% reduction in the generation of hazardous and radioactive waste. Bechtel, BWXT Idaho, LLC (BBWI), the prime management and operations contractor at the INEEL, applied the Six Sigma improvement process to the INEEL Waste Minimization Program to review existing processes and define opportunities for improvement. Our Six Sigma analysis team: composed of an executive champion, process owner, a black belt and yellow belt, and technical and business team members used this statistical based process approach to analyze work processes and produced ten recommendations for improvement. Recommendations ranged from waste generator financial accountability for newly generated waste to enhanced employee recognition programs for waste minimization efforts. These improvements have now been implemented to reduce waste generation rates and are producing positive results.
Branch, M.A.; Coleman, T.F.; Li, Y.
1999-09-01T23:59:59.000Z
A subspace adaptation of the Coleman-Li trust region and interior method is proposed for solving large-scale bound-constrained minimization problems. This method can be implemented with either sparse Cholesky factorization or conjugate gradient computation. Under reasonable conditions the convergence properties of this subspace trust region method are as strong as those of its full-space version. Computational performance on various large test problems is reported; advantages of the approach are demonstrated. The experience indicates that the proposed method represents an efficient way to solve large bound-constrained minimization problems.
Application of L1 Minimization Technique to Image Super-Resolution and Surface Reconstruction
Talavatifard, Habiballah
2013-05-06T23:59:59.000Z
the minimization on ?1 while the solution is kept fixed in ?2. Solid points represent fixed nodal values, while hollow points represent the nodal values to be determined by the minimization algorithm. Degrees of freedoms are indexed from 0 to 12.... On the other hand Augmented Lagrangian method reduces L1 norm at an initial relatively fast rate but they slow down at fine tuning. 21 4.5?103 5.0?103 5.5?103 6.0?103 0 50 100 150 200 SolidTriangleTriangle SolidTriangleTriangle Solid...
Minimizing System Noise Effects For Extreme-Scale Scientific Simulation Through Function Delegation
Dongarra, Jack J. [University of Tennessee, Knoxville; Bosilca, George [University of Tennessee, Knoxville
2013-06-11T23:59:59.000Z
The primary goal of the Minimizing System Noise Effects For Extreme-Scale Scientific Simulation through Function Delegation project is to eliminate or at best strongly minimize the impact of the noise introduced by the operating system, during large scale parallel applications runs. Collective communication operations are a basic building block for parallel programing models and scientific applications. These operations often dominate execution time of applications and tend to limit their scalability. In order to address this challenge, we evaluated different strategies to adapt the collective communications underlying topologies to the hardware architecture in order to provide increased levels of performance to the parallel applications.
Goldberg, Lisa R.; Hayes, Michael Y.; Mahmoud, Ola
2011-01-01T23:59:59.000Z
Barra Extreme Risk model. 2.1 Volatility and Shortfall as Risk Measures Volatility, or the square root of gains and losses. Volatility is the central concept
Clark, Andy
1993-01-01T23:59:59.000Z
Enquiries into the possible nature and scope of innate knowledge never proceed in an empirical vaccuum. Instead, such conjectures are informed by a theory (perhaps only tacitly endorsed) concerning probable representational ...
BY HOW MUCH CAN RESIDUAL MINIMIZATION ACCELERATE THE CONVERGENCE OF ORTHOGONAL RESIDUAL METHODS?
Gutknecht, Martin H.
. Examples of such pairs are the conjugate gradient (CG) and the conjugate residual (CR) methods, the full-minimal residual (QMR) methods. Also the pairs consisting of the (bi)conjugate gradient squared (CGS, iterative method, Krylov space method, conjugate gradient method, biconjugate gradient method, CG, CGNE
Split Bregman Method for Minimization of Region-Scalable Fitting Energy for Image
Soatto, Stefano
Split Bregman Method for Minimization of Region-Scalable Fitting Energy for Image Segmentation, The Ohio State University, OH 43202, U.S. b Department of Mathematics, Harbin Institute of Technology convex segmenta- tion method and the split Bregman technique into the region-scalable fitting energy
SURFACE COMPLETION OF SHAPE AND TEXTURE BASED ON ENERGY MINIMIZATION Norihiko Kawai
Zakhor, Avideh
SURFACE COMPLETION OF SHAPE AND TEXTURE BASED ON ENERGY MINIMIZATION Norihiko Kawai , Avideh Zakhor Yokoya Graduate School of Information Science Nara Institute of Science and Technology 8916-5 Takayama- ing two energy functions for shape and texture, which are both based on similarities between
SS 2006 Selected Topics CMR Minimal infinite cogeneration-closed subcategories.
Ringel, Claus Michael
SS 2006 Selected Topics CMR Minimal infinite cogeneration-closed subcategories. Claus Michael C is finite. Finally, C is cogeneration-closed, provided it is also closed under submodules. Given subcategory containing X . Theorem. Let C be an infinite cogeneration-closed subcategory of mod . Then C
Global Minimization for Continuous Multiphase Partitioning Problems Using a Dual Approach
Soatto, Stefano
Potts model. In contrast to previous efforts, which are trying to tackle the optimal labeling problem processing and computer vision. It is often formulated as the minimization of an energy function which estimation is regarded as better as the energy is lower. In this work we focus on the Potts model, which
Minimal energy for elastic inclusions By Hans Knupfer and Robert V. Kohn
Minimal energy for elastic inclusions By Hans KnÂ¨upfer and Robert V. Kohn Courant Institute, New York University Mercer Street 251, New York, NY 10012, USA We consider a variant of the isoperimetric the emergence of the new phase, the interfacial energy provides an energy barrier for the creation and growth
Michael Herrmann
2010-02-08T23:59:59.000Z
We study heteroclinic standing waves (dark solitons) in discrete nonlinear Schr\\"{o}dinger equations with defocussing nonlinearity. Our main result is a quite elementary existence proof for waves with monotone and odd profile, and relies on minimizing an appropriately defined energy functional. We also study the continuum limit and the numerical approximation of standing waves.
Paris-Sud XI, UniversitÃ© de
periods often appear in industry due to a machine breakdown (stochastic) or preventive maintenance of machine unavailability. However, in some cases (e.g. preventive maintenance), the maintenance of a machineSingle-machine scheduling with periodic and exible periodic maintenance to minimize maximum
Thermodynamics of a rotating black hole in minimal five-dimensional gauged supergravity
Saskia Grunau; Hendrik Neumann
2015-02-24T23:59:59.000Z
In this article we study the thermodynamics of a general non-extremal rotating black hole in minimal five-dimensional gauged supergravity. We analyse the entropy-temperature diagram and the free energy. Additionally we consider the thermodynamic stability by calculating the specific heat, the isothermal moment of inertia tensor and the adiabatic compressibility.
Level set methods to compute minimal surfaces in a medium with ...
2005-06-06T23:59:59.000Z
terms of area among all surfaces with periodic boundary conditions. ... Do the numerical results produce minimal surfaces that enter the exclusions orthogonally? ... We search for the surface with least area measured in this way. .... exclusions are also represented using a level set function ?(x), where ?(x) is the signed ...
Minimal supporting subtrees for the free energy of polymers on disordered trees
Minimal supporting subtrees for the free energy of polymers on disordered trees Peter M, the free energy is supported by a random tree of positive exponential growth rate, which is strictly Abstract: We consider a model of directed polymers on a regular tree with a disorder given by independent
Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers
Burton, Geoffrey R.
. We show that, for high temperatures, the free energy is supported by a random tree of positiveBICS Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers on disordered trees Peter MÂ¨orters and Marcel Ortgiese Bath Institute For Complex Systems Preprint 10/08 (2008
Minimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks
Liang, Weifa
trees with multiple optimization objectives. A. Related Work A number of energy-aware broadcast] that the problem of finding a minimum-energy broadcast tree is NP-hard. Particularly in [2], they have shownMinimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks Weifa
Ford, David N.
1 of 27 Project Controls to Minimize Cost and Schedule Overruns: A Model, Research Agenda been successfully applied to the study of projects for many years. While this modeling has clearly defined the structures which create project dynamics, it has been less helpful in providing explicit
in the development of a robotic arm with minimal impedance. The development of such an arm is use- ful for gentle exploration of unknown objects in un- structured environments. Similar to a human, the robotic arm should- velopment of a humanoid arm using the Whole Arm Manipulator (WAM) robot. Through careful model- ing
1 Copyright 2011 by ASME EXERGY ANALYSIS AND ENTROPY GENERATION MINIMIZATION OF
) are designed to become smaller and thinner at the same time, the thermoelectric material can be saved by nearly1 Copyright Â© 2011 by ASME EXERGY ANALYSIS AND ENTROPY GENERATION MINIMIZATION OF THERMOELECTRIC Stirling engines, etc., authors previously reported that thermoelectric (TE) can be a cost-effective device
Optimal Preemptive Semi-Online Scheduling to Minimize Makespan on Two Related Machines
Epstein, Leah
Optimal Preemptive Semi-Online Scheduling to Minimize Makespan on Two Related Machines Leah Epstein uni- formly related machines. We analyze the algorithms as a function of the speed ratio (q #21; 1) between the two machines. We design algorithms of optimal competitive ratio for all values of q, and show
On Approximate Non-submodular Minimization via Tree-Structured Supermodularity
Hochberg, Michael
the submodular energy alone. For example, a supermodular forest or tree could be used to add encouragementOn Approximate Non-submodular Minimization via Tree-Structured Supermodularity Yoshinobu Kawahara Jeffery A. Bilmes Dept. of Electrical Engineering, University of Washington, {rkiyer
Waste minimization for commercial radioactive materials users generating low-level radioactive waste
Fischer, D.K.; Gitt, M.; Williams, G.A.; Branch, S. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Otis, M.D.; McKenzie-Carter, M.A.; Schurman, D.L. (Science Applications International Corp., Idaho Falls, ID (United States))
1991-07-01T23:59:59.000Z
The objective of this document is to provide a resource for all states and compact regions interested in promoting the minimization of low-level radioactive waste (LLW). This project was initiated by the Commonwealth of Massachusetts, and Massachusetts waste streams have been used as examples; however, the methods of analysis presented here are applicable to similar waste streams generated elsewhere. This document is a guide for states/compact regions to use in developing a system to evaluate and prioritize various waste minimization techniques in order to encourage individual radioactive materials users (LLW generators) to consider these techniques in their own independent evaluations. This review discusses the application of specific waste minimization techniques to waste streams characteristic of three categories of radioactive materials users: (1) industrial operations using radioactive materials in the manufacture of commercial products, (2) health care institutions, including hospitals and clinics, and (3) educational and research institutions. Massachusetts waste stream characterization data from key radioactive materials users in each category are used to illustrate the applicability of various minimization techniques. The utility group is not included because extensive information specific to this category of LLW generators is available in the literature.
Fischer, D.K.; Gitt, M.; Williams, G.A.; Branch, S. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Otis, M.D.; McKenzie-Carter, M.A.; Schurman, D.L. [Science Applications International Corp., Idaho Falls, ID (United States)
1991-07-01T23:59:59.000Z
The objective of this document is to provide a resource for all states and compact regions interested in promoting the minimization of low-level radioactive waste (LLW). This project was initiated by the Commonwealth of Massachusetts, and Massachusetts waste streams have been used as examples; however, the methods of analysis presented here are applicable to similar waste streams generated elsewhere. This document is a guide for states/compact regions to use in developing a system to evaluate and prioritize various waste minimization techniques in order to encourage individual radioactive materials users (LLW generators) to consider these techniques in their own independent evaluations. This review discusses the application of specific waste minimization techniques to waste streams characteristic of three categories of radioactive materials users: (1) industrial operations using radioactive materials in the manufacture of commercial products, (2) health care institutions, including hospitals and clinics, and (3) educational and research institutions. Massachusetts waste stream characterization data from key radioactive materials users in each category are used to illustrate the applicability of various minimization techniques. The utility group is not included because extensive information specific to this category of LLW generators is available in the literature.
Circles Minimize most Knot Energies Aaron Abrams, Jason Cantarella, 1 and Joseph H. Fu, 2
Cantarella, Jason
Circles Minimize most Knot Energies Aaron Abrams, Jason Cantarella, 1 and Joseph H. Fu, 2 Department of Mathematics, University of South Carolina, Columbia, SC 29208 Abstract We define a new class of knot energies (known as renormalization energies) and prove that a broad class of these energies
Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved
Morrow, James A.
Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved Irrigation Systems February 6, 2006 1 #12;Page 2 of 12 Control #23 Contents 1 Field and pipe set layout 4 2 Pressure loss 4 2 uniformity requirement. We define `maintenance time' provisionally to be the number of 20-meter pipes
Electric Vehicle Induction Motor DSVM-DTC with Torque Ripple Minimization
Paris-Sud XI, Université de
Electric Vehicle Induction Motor DSVM-DTC with Torque Ripple Minimization Farid Khoucha1 a sensorless DSVM-DTC of an induction motor that propels an electrical vehicle or a hybrid one. The drive uses, as demonstrated in experimental results. Keywords: Electric vehicle (EV), induction motor, Discrete Space Vector
CAYLEY'S THEOREM FOR ORDERED GROUPS: O-MINIMALITY August 10, 2006
Baldwin, John T.
FOR INFORMATICS AND CONTROL PROBLEMS ALMATY, KAZAKHSTAN JOHN T. BALDWIN DEPARTMENT OF MATHEMATICS, STATISTICS PROBLEMS ALMATY, KAZAKHSTAN It has long been known [4] that any group could be represented in a strongly AND CONTROL PROBLEMS ALMATY, KAZAKHSTAN JOHN T. BALDWIN DEP models of an o-minimal theory satisfy
GLOBAL MINIMIZATION OF MARKOV RANDOM FIELDS WITH APPLICATIONS TO OPTICAL FLOW
Soatto, Stefano
to recast the problem in a convex form using a "functional lifting" technique. In this paper, we present a variational functional lifting technique that can be viewed as a generalization of previ- ous works by Pock et corre- sponds to a global minimizer. This generalization allows functional lifting to be applied
LETTER Communicated by Peter Rowat Minimal Model for Intracellular Calcium Oscillations and
Gielen, C.C.A.M.
voltage-gated Ca2C channels in the plasma membrane. The Ca2C oscillations in the Xenopus melanotrope showLETTER Communicated by Peter Rowat Minimal Model for Intracellular Calcium Oscillations in frequency, shape, and amplitude of Ca2C oscillations in the neuroendocrine melanotrope cell of Xenopus
An Approach to Minimal Power Routing and Scheduling in Wireless Ad Hoc Networks
Massachusetts at Amherst, University of
's fixed power level that is used, leading to data loss. The problem that we address is primarily a routingAn Approach to Minimal Power Routing and Scheduling in Wireless Ad Hoc Networks Sugata Hazarika # Jim Kurose # Dennis Goeckel + # Department of Computer Science + Department. of Electrical Engineering
An Approach to Minimal Power Routing and Scheduling in Wireless Ad Hoc Networks
Massachusetts at Amherst, University of
's fixed power level that is used, leading to data loss. The problem that we address is primarily a routingAn Approach to Minimal Power Routing and Scheduling in Wireless Ad Hoc Networks Sugata Hazarika Jim Kurose Dennis Goeckel Department of Computer Science Department. of Electrical Engineering University
A majorization-minimization approach to design of power distribution networks
Johnson, Jason K [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory
2010-01-01T23:59:59.000Z
We consider optimization approaches to design cost-effective electrical networks for power distribution. This involves a trade-off between minimizing the power loss due to resistive heating of the lines and minimizing the construction cost (modeled by a linear cost in the number of lines plus a linear cost on the conductance of each line). We begin with a convex optimization method based on the paper 'Minimizing Effective Resistance of a Graph' [Ghosh, Boyd & Saberi]. However, this does not address the Alternating Current (AC) realm and the combinatorial aspect of adding/removing lines of the network. Hence, we consider a non-convex continuation method that imposes a concave cost of the conductance of each line thereby favoring sparser solutions. By varying a parameter of this penalty we extrapolate from the convex problem (with non-sparse solutions) to the combinatorial problem (with sparse solutions). This is used as a heuristic to find good solutions (local minima) of the non-convex problem. To perform the necessary non-convex optimization steps, we use the majorization-minimization algorithm that performs a sequence of convex optimizations obtained by iteratively linearizing the concave part of the objective. A number of examples are presented which suggest that the overall method is a good heuristic for network design. We also consider how to obtain sparse networks that are still robust against failures of lines and/or generators.
Minimizing the Population Extinction Risk by Migration Michael Khasin,1,2
Meerson, Baruch
3]. Habitat fragmentation is implicated in the decline and extinction of many endangered species [4Minimizing the Population Extinction Risk by Migration Michael Khasin,1,2 Baruch Meerson,3 Evgeniy occupying separate patches. A local population is prone to extinction due to the shot noise of birth
Hiding Traffic with Camouflage: Minimizing Message Delay in the Smart Grid under Jamming
Wang, Wenye
been proposed for efficient communications. However, the jamming attack that broadcasts radio communication under jamming attacks. Nevertheless, an open question in the smart grid is how to minimize message] that the jamming attack, which uses radio interference to disrupt wireless communications [5], [6], can result
Compressing Rectilinear Pictures and Minimizing Access Control Lists David L. Applegate
Ligett, Katrina
Compressing Rectilinear Pictures and Minimizing Access Control Lists David L. Applegate Gruia model for the problem of minimiz- ing access control lists (ACLs) in network routers, a model that also has applications to rectilinear picture compression and figure drawing in common graphics software
MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS
Morrell, Darryl
MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS Thomas address the following scenario: a single target moves through a field of stationary sensors with known locations. At each time epoch, each sensor is either active or not; each active sensor outputs either target
Simultaneous Power Fluctuation and Average Power Minimization during Nano-CMOS Behavioral Synthesis
Mohanty, Saraju P.
Simultaneous Power Fluctuation and Average Power Minimization during Nano-CMOS Behavioral Synthesis for the reduction of total power and power fluctuation dur- ing behavioral synthesis. We consider resources of dual component library which is then used during behavioral synthesis. The formulated multi-objective cost
From Dark Energy to Dark Matter via Non-Minimal Coupling
A. Borowiec
2008-12-23T23:59:59.000Z
Toy cosmological models based on non-minimal coupling between gravity and scalar dilaton-like field are presented in the framework of Palatini formalism. They have the following property: preceding to a given cosmological epoch is a dark energy epoch with an accelerated expansion. The next (future) epoch becomes dominated by some kind of dark matter.
Formulating an Optimization Problem for Minimization of Losses due to Utilities
Como, Giacomo
Formulating an Optimization Problem for Minimization of Losses due to Utilities Anna Lindholm.lindholm@control.lth.se). Abstract: Utilities, such as steam and cooling water, are often shared between several production areas at industrial sites, and the effects of disturbances in utilities could thus be hard to predict. In addition
Suni, Ian Ivar
, such as optical and acoustic methods.3-6 In addition, electrochemical biosensors often have lower noise levels are often sensitive to environmental noise. Electrochemical glucose biosensors detect glucose by measuringMinimizing Nonspecific Adsorption in Protein Biosensors that Utilize Electrochemical Impedance
Wang, Dan
Minimizing Building Electricity Costs in a Dynamic Power Market: Algorithms and Impact on Energy of Computing, The Hong Kong Polytechnic University, Hong Kong, P. R. China 2 Department of Electrical and the electricity bills nowa- days are leading to unprecedented costs. Electricity price is market-based and dynamic
Minimizing the Operational Cost of Data Centers via Geographical Electricity Price Diversity
Liang, Weifa
Minimizing the Operational Cost of Data Centers via Geographical Electricity Price Diversity amounts of electric power, which lead to high operational costs of cloud service providers. Reducing cloud environment by incorporating the diversity of time-varying electricity prices in different regions
Plotkin, Joshua B.
orienting facets in polygon meshes by minimizing the Dirichlet energy of generalized winding numbers. While based on the Dirichlet energy of the generalized winding number. Our motivation came from the fact Dirichlet energy of the corresponding generalized winding number. 2 Method 2.1 Patch extraction
Mass/ Inertia and Joint Friction Minimization for a Lowforce Fivedof Haptic Device*
Papadopoulos, Evangelos
Mass/ Inertia and Joint Friction Minimization for a LowÂforce FiveÂdof Haptic Device* Kostas and joint friction for a low Â force five Â dof haptic device. The haptic device is optimized along a typical path with proper tolerances, rather than at some workspace operating point. The device, part
Economic Theory 19, 105144 (2002) Minimal belief change, Pareto-optimality
Schulte, Oliver
, B.C., V5A 1S6, CANADA (e-mail: oschulte@cs.sfu.ca) Received: August 20, 2000; revised version: March belief revision. I employ a decision- theoretic framework to compare various principles for minimal belief revision. The main topics covered include the AGM postulates for belief revision, belief
Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for
Swaminathan, Madhavan
Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for High] by replacing the power plane structure with a power transmission line (PTL). In this paper, a new power switching noise; power transmission line I. INTRODUCTION The rapid increase in data rates and transistor
Dynamic Voltage Scaling for Systemwide Energy Minimization in Real-Time Embedded Systems
Gupta, Rajesh
%. We show that our scheduling approach minimizes the total static and dynamic energy consumption increase the total energy consumption of the system. A minimum power consumption is associated with keeping the processorenergy consumption as opposed to the entire system energy consumption. The slowdown resulting from DVS
SMART METER PRIVACY USING A RECHARGEABLE BATTERY: MINIMIZING THE RATE OF INFORMATION LEAKAGE
Khisti, Ashish
SMART METER PRIVACY USING A RECHARGEABLE BATTERY: MINIMIZING THE RATE OF INFORMATION LEAKAGE David. INTRODUCTION Deployments of smart electricity meters to residential homes con- tinue unabated around the world resources. Smart meters are essential to coordinate the desired charging and discharg- ing of the batteries
TECHNIQUES FOR MINIMIZING AND MONITORING THE IMPACT OF PIPELINE CONSTRUCTION ON COASTAL STREAMS1
Standiford, Richard B.
TECHNIQUES FOR MINIMIZING AND MONITORING THE IMPACT OF PIPELINE CONSTRUCTION ON COASTAL STREAMS1 resources dur- ing construction of an oil and gas pipeline that crossed coastal reaches of 23 perennial, and representatives of Santa Barbara County. The Point Arguello pipeline was recently constructed by Chevron U
Minimizing the Energy Cost of Throughput in a Linear Pipeline by Opportunistic Time Borrowing
Pedram, Massoud
Minimizing the Energy Cost of Throughput in a Linear Pipeline by Opportunistic Time Borrowing a technique to optimize the energy-delay product of a synchronous linear pipeline circuit with dynamic error and clock frequency of the design by exploiting slacks that are present in various stages of the pipeline
Power Minimization Techniques at the RT-Level and Afshin Abdollahi and Massoud Pedram
Pedram, Massoud
1 Power Minimization Techniques at the RT-Level and Below Afshin Abdollahi and Massoud Pedram Dept. of Electrical Engineering University of Southern California Los Angeles, CA 90089 U.S.A. Abstract Â Power consumption and power-related issues have become a first-order concern for most designs and loom
Postcard: Minimizing Costs on Inter-Datacenter Traffic with Store-and-Forward
Li, Baochun
Postcard: Minimizing Costs on Inter-Datacenter Traffic with Store-and-Forward Yuan Feng, Baochun Li--It is typical for cloud providers to operate a number of geographically distributed datacenters, where inter-datacenter such inter-datacenter traffic incurs substantial operational costs that are charged by ISPs, it varies
DECENTRALIZED VOLTAGE CONTROL TO MINIMIZE DISTRIBUTION LOSSES IN AN ISLANDED MICROGRID
Peng, Huei
power sources and energy storage systems such as batteries requires new power and voltage control-time voltage control algorithm that minimizes power losses for a microgrid supported by inverter based Microgrids can bring electricity power to rural communities or isolated military forward operation bases
Sleep with Guilt and Work Faster to Minimize Flow plus Energy
Wong, Prudence W.H.
to reduce energy usage. Re- cently there is a lot of theory research on online job scheduling taking speedSleep with Guilt and Work Faster to Minimize Flow plus Energy Tak-Wah Lam1, , Lap-Kei Lee1 , Hing. {isaacto, pwong}@liverpool.ac.uk Abstract. In this paper we extend the study of flow-energy scheduling
Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops
Sha, Edwin
Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops Qingfeng Zhuge. However, little research has been done for the software pipelining problem on nested loops. The existing software pipelining techniques for single loops can only explore the innermost loop parallelism of a nested
Security Games and Risk Minimization for Automatic Generation Control in Smart Grid
Alpcan, Tansu
Security Games and Risk Minimization for Automatic Generation Control in Smart Grid Yee Wei Law be protected against potential threats. Advanced monitoring technologies at the center of smart grid evolution injection. This paper develops a game-theoretic approach to smart grid security by combining quantitative
Computer Graphics in Real-time Docking with Energy Calculation and Minimization
Levitt, Michael
Computer Graphics in Real-time Docking with Energy Calculation and Minimization N. Pattabiraman, M. Levitt*, T.E. Ferrin, R. Langridge Computer Graphics Laboratory, Department of Pharmaceutical Chemistry 1985 We describe a real-time docking method using molecular graphics and high-speed calculation
Muehlenbein, Michael
I SM T 229 EDITORIAL Minimizing Pathogen Transmission at Primate Ecotourism Destinations: The Need. Ecotourism is a sustainable version of nature tourism with the following components: Â· Contributes for rural people (p. 10).3 Ecotourism accounts for a significant proportion of all international tourism
Dexterity optimization by port placement in robot-assisted minimally invasive surgery
Dupont, Pierre
Dexterity optimization by port placement in robot-assisted minimally invasive surgery Shaun Selha1 port triplets ranked according to tool dexterity and endoscopic view quality at each surgical site involved in a procedure. A computer simulation allows the surgeon to select from among the proposed port
System-Wide Energy Minimization for Real-Time Tasks: Lower Bound and Approximation
Xu, Cheng-Zhong
- time solutions by exploiting its inherent properties. 1. INTRODUCTION Power management is importantSystem-Wide Energy Minimization for Real-Time Tasks: Lower Bound and Approximation Xiliang Zhong and Cheng-Zhong Xu Department of Electrical and Computer Engineering Wayne State University, Detroit
Minimizing Misclassification of Damage using Extreme Value Statistics , Hyun Woo Park2
Stanford University
Minimizing Misclassification of Damage using Extreme Value Statistics Hoon Sohn1 , Hyun Woo Park2 , Kincho H. Law3 , and Charles R. Farrar4 1 Department of Civil and Environmental Engineering Carnegie University, Seoul 151-742, Korea 3 Department of Civil and Environmental Engineering Stanford University, CA
A PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM
Noll, Dominikus
in the context of eigen- value optimization, and [8] gives an overview of the history. The bases for the presentA PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM EIGENVALUE function, semi-infinite problem, H-norm. 1. Introduction. Proximity control for bundle methods has been
A PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM
Noll, Dominikus
in the context of eigen- value optimization, and [9] gives an overview of the history. The bases for the presentA PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM EIGENVALUE function, semi-infinite problem, H-norm. 1. Introduction. Proximity control for bundle methods has been
Boucher, T.D.
1996-04-01T23:59:59.000Z
This report addresses the research and development of a waste minimization plan for the construction and operation of Project W-058, Replacement of the Cross-Site Transfer System, on the Hanford Site. The plan is based on Washington Administrative Code (WAC) 173-307, Plans. The waste minimization plan identifies areas where pollution prevention/waste minimization principles can be incorporated into the construction and operation of the cross-site transfer system.
Pruna, Giovanni Marco
2011-01-01T23:59:59.000Z
??This thesis is devoted to the study of the phenomenology of the Higgs sector of the minimal B ?L extension of the Standard Model at… (more)
RSE Table N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2
U.S. Energy Information Administration (EIA) 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 CenterFranconia,(Million Barrels) Crude Oil Reserves in NonproducingAdditions to Capacity on theThousand7.End1 Relative3E8.1 and
Sciences Po Grenoble working paper n.2
Boyer, Edmond
will first analyse the forms of resistance to hard law based on the widespread secondary literature available. This will then be compared to areas in which soft law reigns, with a view to demonstrate that soft law triggers as much resistance as hard law. Based on this empirical data and using a policy instruments approach, the paper
N2Solar | Open Energy Information
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 Office of InspectorConcentrating Solar Powerstories onFocus Area EnergyMohawkaccrediation ofInformationCoop,
Arabshahi, Payman
PER-NODE POWER MINIMAL MULTICAST TREES WHICH MAXIMIZE THE TIME-TO-FIRST-FAILURE IN ENERGY as the time till the first node in the network runs out of battery energy, and minimizing the total power in energy constrained static wireless networks. It is shown in [6] that simply optimizing the TTFF criterion
Krishnamachari, Bhaskar
objective is to minimize the overall energy cost of the sensor nodes in the data gathering tree subjectIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 5, NO. 11, NOVEMBER 2006 3087 Energy problem of energy minimization for data gathering over a multiple-sources single-sink communication
Jourdan, Guy-Vincent
1 Minimizing the Number of Inputs while Applying Adaptive Test Cases Guy-Vincent Jourdan, Hasan engineering, adaptive testing, adaptive test cases, minimization of test inputs 1. Introduction State is to construct a set of test cases to be employed during testing of potential implementations of the specified
978-1-4244-4439-7/09/$25.00 c 2009 IEEE Minimizing Energy Consumption by Power-Efficient Radio
Paris-Sud XI, UniversitÃ© de
978-1-4244-4439-7/09/$25.00 c 2009 IEEE Minimizing Energy Consumption by Power-Efficient Radio herve.rivano@sophia.inria.fr Abstract In this paper, we investigate on minimizing the energy consumption a piecewise linear convex function that pro- vides a good approximation of the energy consumption on the links
Sanders, Seth
transition among the modes. An on-line adaptive algorithm to optimize the SR timing, based on power loss reducing the switching losses. In modern portable applications, minimizing power loss at light load in the controller, or can be obtained on-line by dynamically minimizing the converter power loss via multi
Paris-Sud XI, UniversitÃ© de
show some characterization results for the global minimizer of this energy and finally we also prove is triangular. AMS Classification: Primary 82B20 ; Secondary 52C15, 35Q40. Keywords: Lattice's energy ; Theta close to one and long range interaction. He showed that the global minimizer of the total energy
Paris-Sud XI, UniversitÃ© de
show some characterization results for the global minimizer of this energy and finally we also prove is triangular. AMS Classification: Primary 82B20 ; Secondary 52C15, 35Q40. Keywords: Lattice energy ; Theta interaction. He showed that the global minimizer of the total energy is triangular. His method was adapted
Kusiak, Andrew
Minimization of energy consumption in HVAC systems with data-driven models and an interior online 13 June 2014 Keywords: HVAC Interior-point method Internal heat gain Multilayer perceptron-driven approach is applied to minimize energy consumption of a heating, ventilating, and air conditioning (HVAC
that the global min- imizer of the total energy is the triangular lattice of length one. His method was adapted. The problem is to find the configuration of the points which minimizes the total energy of interaction, calledMinimization of energy per particle among Bravais lattices in R2 : Lennard-Jones and Thomas
Line-Greedy (with p = 5). Minimizing the total energy consumed by the processors to execute the job has recentlyOn the performance of greedy algorithms for energy minimization Anne Benoit, Paul Renaud Report RR-2010-27 Abstract We revisit the well-known greedy algorithm for scheduling independent jobs
A weighted ?{sub 1}-minimization approach for sparse polynomial chaos expansions
Peng, Ji [Mechanical Engineering Department, University of Colorado, Boulder, CO 80309 (United States); Hampton, Jerrad [Aerospace Engineering Sciences Department, University of Colorado, Boulder, CO 80309 (United States); Doostan, Alireza, E-mail: alireza.doostan@colorado.edu [Aerospace Engineering Sciences Department, University of Colorado, Boulder, CO 80309 (United States)
2014-06-15T23:59:59.000Z
This work proposes a method for sparse polynomial chaos (PC) approximation of high-dimensional stochastic functions based on non-adapted random sampling. We modify the standard ?{sub 1}-minimization algorithm, originally proposed in the context of compressive sampling, using a priori information about the decay of the PC coefficients, when available, and refer to the resulting algorithm as weighted?{sub 1}-minimization. We provide conditions under which we may guarantee recovery using this weighted scheme. Numerical tests are used to compare the weighted and non-weighted methods for the recovery of solutions to two differential equations with high-dimensional random inputs: a boundary value problem with a random elliptic operator and a 2-D thermally driven cavity flow with random boundary condition.
Suri, P K
2010-01-01T23:59:59.000Z
This paper addresses the methodology for achieving the user interface design reusability of a qualitative software system and effort minimization by applying the inference on the stored design documents. The pictorial design documents are stored in a special format in the form of keyword text [DGML tag based design]. The design document storage mechanism will expose the keywords per design stored. This methodology is having an inference engine. Inference mechanism search for the requirements and find the match for them in the available design repository. A match found will success in reusing it after checking the quality parameters of the found design module in the result set. DGML notations produces qualitative designs which helps in minimizing the efforts of software development life cycle.
Evidence of BRST-Symmetry Breaking in Lattice Minimal Landau Gauge
Attilio Cucchieri; David Dudal; Tereza Mendes; Nele Vandersickel
2014-10-30T23:59:59.000Z
By evaluating the so-called Bose-ghost propagator, we present the first numerical evidence of BRST-symmetry breaking for Yang-Mills theory in minimal Landau gauge, i.e. due to the restriction of the functional integration to the first Gribov region in the Gribov-Zwanziger approach. Our data are well described by a simple fitting function, which can be related to a massive gluon propagator in combination with an infrared-free (Faddeev-Popov) ghost propagator. As a consequence, the Bose-ghost propagator, which has been proposed as a carrier of the confining force in minimal Landau gauge, displays a 1/p^4 singularity in the infrared limit.
Ion trajectory analysis for micromotion minimization and the measurement of small forces
Gloger, Timm F; Kaufmann, Delia; Baig, M Tanveer; Collath, Thomas; Johanning, Michael; Wunderlich, Christof
2015-01-01T23:59:59.000Z
For experiments with ions confined in a Paul trap, minimization of micromotion is often essential. This is the case, for example, for experiments in quantum information science using trapped ions, in combined traps for neutral atoms and ions, and for precision measurements using trapped ions. In order to diagnose and compensate micromotion we have implemented a method that allows for finding the position of the radio-frequency (RF) null reliably and efficiently, in principle, without any variation of direct current (DC) voltages. We apply a trap modulation technique and tomographic imaging to extract 3d ion positions for various RF drive powers and analyze the power dependence of the equilibrium position of the trapped ion. In contrast to commonly used methods, the search algorithm directly makes use of a physical effect as opposed to efficient numerical minimization in a high-dimensional parameter space. The precise position determination of an harmonically trapped ion employed here can also be utilized for ...
Residuals in steel products -- Impacts on properties and measures to minimize them
Emi, Toshihiko [Tohoku Univ., Sendai (Japan). Inst. for Advanced Materials Processing; Wijk, O. [Royal Inst. of Tech., Stockholm (Sweden). Dept. of Process Metallurgy
1996-12-31T23:59:59.000Z
The effect of major residual elements on the properties of steel products is summarized. Measures to minimize these elements are discussed including the pretreatment of raw materials, innovative refining processes and environmental issues. This paper addresses (1) scrap situation, (2) upper limit of residual concentrations acceptable for processing and product quality, (3) possible means to reduce the residuals, and (4) consideration on the practicable measures to solve the residuals problem in a systematic way. 52 refs.
Not Available
1994-07-01T23:59:59.000Z
The purpose of this plan is to establish a waste minimization and pollution prevention awareness (WM/PPA) program for the U.S. Department of Energy`s (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. The program satisfies DOE requirements mandated by DOE Order 5400.1. This plan establishes planning objectives and strategies for conserving resources and reducing the quantity and toxicity of wastes and other environmental releases.
Fitting Non-Minimally Coupled Scalar Models to Gold SnIa Dataset
Mingxing Luo; Qiping Su
2005-08-18T23:59:59.000Z
Non-minimally coupled theories of special potentials are analyzed numerically. Such theories yield equations of state $\\omegadataset, we obtain results comparable with other models. A potential of the form $V(\\phi)=V_0e^{a_1\\phi^2}$ yields $\\chi^2_{min}=170.127$. Similar results are obtained for potentials of the form $V(\\phi)=V_0+a_1\\phi^n$.
Thermodynamics of scalar-tensor theory with non-minimally derivative coupling
Huang, Yumei; Liang, Dicong; Yi, Zhu
2015-01-01T23:59:59.000Z
With the usual definitions for the entropy and the temperature associated with the apparent horizon, we show that the unified first law on the apparent horizon is equivalent to the Friedmann equation for the scalar-tensor theory with non-minimally derivative coupling. The second law of thermodynamics on the apparent horizon is also satisfied. The results support a deep and fundamental connection between gravitation, thermodynamics and quantum theory.
Shifted focus point of the Higgs mass parameter from the minimal mixed mediation of SUSY breaking
Kyae, Bumseok
2015-01-01T23:59:59.000Z
We employ both the minimal gravity- and the minimal gauge mediations of supersymmetry breaking at the grand unified theory scale (GUT) in a single supergravity framework. In such a "minimal mixed mediation model," a "focus point" of the Higgs mass parameter, m_{h_u}^2 emerges at 3-4 TeV energy scale, which is exactly the stop mass scale needed for explaining the 126 GeV Higgs boson mass without the "A-term" at the three loop level. As a result, m_{h_u}^2 can be quite insensitive to various trial stop masses at low energy, reducing the fine-tuning measures to be much smaller than 100 even for 3-4 TeV low energy stop mass and -0.5 < A_t / m_0 < 0 at the GUT scale. In this model the gluino mass is predicted to be about 2.3 TeV, which could readily be tested at LHC run 2.
Using benchmarking to minimize common DOE waste streams: Volume 5. Office paper waste
Levin, V.
1995-10-01T23:59:59.000Z
Finding innovative ways to reduce waste streams generated at US Department of Energy (DOE) sites by 50% by the year 2000 is a challenge for DOE`s waste minimization efforts. A team composed of members from several DOE facilities used the quality tool known as benchmarking to improve waste minimization efforts. First the team examined office waste generation and handling processes at their sites. Then team members developed telephone and written questionnaires to help identify potential ``best-in-class`` industry partners willing to share information about their best waste minimization techniques and technologies. The team identified two benchmarking partners, NIKE, Inc., in Beaverton, Oregon, and Microsoft, Inc., in Redmond, Washington. Both companies have proactive, employee-driven environmental issues programs. Both companies report strong employee involvement, management commitment, and readily available markets for recyclable materials such as white paper and nonwhite assorted paper. The availability of markets, the initiative and cooperation of employees, and management support are the main enablers for their programs. At both companies, recycling and waste reduction programs often cut across traditional corporate divisions such as procurement, janitorial services, environmental compliance, grounds maintenance, cafeteria operations, surplus sales, and shipping and receiving. These companies exhibited good cooperation between these functions to design and implement recycling and waste reduction programs.
Annual Report on Waste Generation and Waste Minimization Progress, 1991--1992
Not Available
1994-02-01T23:59:59.000Z
This report is DOE`s first annual report on waste generation and waste minimization progress. Data presented in this report were collected from all DOE sites which met minimum threshold criteria established for this report. The fifty-seven site submittals contained herein represent data from over 100 reporting sites within 25 states. Radioactive, hazardous and sanitary waste quantities and the efforts to minimize these wastes are highlighted within the fifty-seven site submittals. In general, sites have made progress in moving beyond the planning phase of their waste minimization programs. This is evident by the overall 28 percent increase in the total amount of materials recycled from 1991 to 1992, as well as individual site initiatives. During 1991 and 1992, DOE generated a total of 279,000 cubic meters of radioactive waste and 243,000 metric tons of non-radioactive waste. These waste amounts include significant portions of process wastewater required to be reported to regulatory agencies in the state of Texas and the state of Tennessee. Specifically, the Pantex Plant in Texas treats an industrial wastewater that is considered by the Texas Water Commission to be a hazardous waste. In 1992, State regulated wastewater from the Pantex Plant represented 3,620 metric tons, 10 percent of the total hazardous waste generated by DOE. Similarly, mixed low-level wastewater from the TSCA Incinerator Facility at the Oak Ridge K-25 Site in Tennessee represented 55 percent of the total radioactive waste generated by DOE in 1992.
Miliordos, Evangelos; Apra, Edoardo; Xantheas, Sotiris S.
2013-09-21T23:59:59.000Z
We report the first optimum geometries and harmonic vibrational frequencies for the ring pentamer and several water hexamer (prism, cage, cyclic and two book) at the CCSD(T)/aug-cc-pVDZ level of theory. All five hexamer isomer minima previously reported by MP2 are also minima on the CCSD(T) potential energy surface (PES). In addition, all CCSD(T) minimum energy structures for the n=2-6 cluster isomers are quite close to the ones previously obtained by MP2 on the respective PESs, as confirmed by a modified Procrustes analysis that quantifies the difference between any two cluster geometries. The CCSD(T) results confirm the cooperative effect of the homodromic ring networks (systematic contraction of the nearest-neighbor (nn) intermolecular separations with cluster size) previously reported by MP2, albeit with O-O distances shorter by ~0.02 Å, indicating that MP2 overcorrects this effect. The harmonic frequencies at the minimum geometries were obtained by the double differentiation of the CCSD(T) energy using an efficient scheme based on internal coordinates that reduces the number of required single point energy evaluations by ~15% when compared to the corresponding double differentiation using Cartesian coordinates. Negligible differences between MP2 and CCSD(T) are found for the librational modes, while uniform increases of ~15 and ~25 cm-1 are observed for the bending and “free” OH harmonic frequencies. The largest differences between MP2 and CCSD(T) are observed for the harmonic hydrogen bonded frequencies. The CCSD(T) red shifts from the monomer frequencies (??) are smaller than the MP2 ones, due to the fact that the former produces shorter elongations (?R) of the respective hydrogen bonded OH lengths from the monomer value with respect to the latter. Both the MP2 and CCSD(T) results for the hydrogen bonded frequencies were found to closely follow the relation - ?? = s ? ?R, with a rate of s = 20.3 cm-1 / 0.001 Å. The CCSD(T) harmonic frequencies, when corrected using the MP2 anharmonicities obtained from second order vibrational perturbation theory (VPT2), produce anharmonicCCSD(T) estimates that are within < 60 cm-1 from the measured infrared (IR) active bands of the n=2-6 clusters and furthermore trace the observed red shifts with respect to the monomer (??) quite accurately. The energetic order between the various hexamer isomers on the PES (prism has the lowest energy) previously reported at MP2 was found to be preserved at the CCSD(T) level, whereas the inclusion of anharmonic corrections further stabilizes the cage among the hexamer isomers.
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.
Han, Eun Young, E-mail: eyhan@uams.edu [Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR (United States); Zhang Xin; Yan Yulong; Sharma, Sunil; Penagaricano, Jose [Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR (United States); Moros, Eduardo [Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL (United States); Corry, Peter [Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR (United States)
2012-01-01T23:59:59.000Z
At University of Arkansas for Medical Sciences (UAMS) intracranial stereotactic radiosurgery (SRS) is performed by using a linear accelerator with an add-on micromultileaf collimator (mMLC). In our clinical setting, static jaws are automatically adapted to the furthest edge of the mMLC-defined segments with 2-mm (X jaw) and 5-mm (Y jaw) margin and the same jaw values are applied for all beam angles in the treatment planning system. This additional field gap between the static jaws and the mMLC allows additional radiation dose to normal brain tissue. Because a radiosurgery procedure consists of a single high dose to the planning target volume (PTV), reduction of unnecessary dose to normal brain tissue near the PTV is important, particularly for pediatric patients whose brains are still developing or when a critical organ, such as the optic chiasm, is near the PTV. The purpose of this study was to minimize dose to normal brain tissue by allowing minimal static jaw margin around the mMLC-defined fields and different static jaw values for each beam angle or arc. Dose output factors were measured with various static jaw margins and the results were compared with calculated doses in the treatment planning system. Ten patient plans were randomly selected and recalculated with zero static jaw margins without changing other parameters. Changes of PTV coverage, mean dose to predefined normal brain tissue volume adjacent to PTV, and monitor units were compared. It was found that the dose output percentage difference varied from 4.9-1.3% for the maximum static jaw opening vs. static jaw with zero margins. The mean dose to normal brain tissue at risk adjacent to the PTV was reduced by an average of 1.9%, with negligible PTV coverage loss. This dose reduction strategy may be meaningful in terms of late effects of radiation, particularly in pediatric patients. This study generated clinical knowledge and tools to consistently minimize dose to normal brain tissue.
A Minimal Two-band Model for the Superconducting Fe-pnictides
Raghu, S.
2010-03-25T23:59:59.000Z
Following the discovery of the Fe-pnictide superconductors, LDA band structure calculations showed that the dominant contributions to the spectral weight near the Fermi energy came from the Fe 3d orbitals. The Fermi surface is characterized by two hole surfaces around the {Lambda} point and two electron surfaces around the M point of the 2 Fe/cell Brillouin zone. Here, we describe a 2-band model that reproduces the topology of the LDA Fermi surface and exhibits both ferromagnetic and q = ({pi}, 0) spin density wave (SDW) fluctuations. We argue that this minimal model contains the essential low energy physics of these materials.
Hidden conformal symmetry of rotating black holes in minimal five-dimensional gauged supergravity
Setare, M. R.; Kamali, V. [Department of Science of Bijar, University of Kurdistan Bijar (Iran, Islamic Republic of)
2010-10-15T23:59:59.000Z
In the present paper we show that for a low frequency limit the wave equation of a massless scalar field in the background of nonextremal charged rotating black holes in five-dimensional minimal gauged and ungauged supergravity can be written as the Casimir of an SL(2,R) symmetry. Our result shows that the entropy of the black hole is reproduced by the Cardy formula. Also the absorption cross section is consistent with the finite temperature absorption cross section for a two-dimensional conformal field theory.
Minimal blow-up solutions of mass-critical inhomogeneous Hartree equation
Cao, Daomin, E-mail: dmcao@amt.ac.cn; Su, Yiming, E-mail: yimingsu@amss.ac.cn [Institute of Applied Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)] [Institute of Applied Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)
2013-12-15T23:59:59.000Z
In this paper, we are concerned with the Cauchy problem of the inhomogeneous Hartree equation: iu{sub t}=??u?k(x)(?{sub R{sup N}}(k(y))/(|x?y|{sup 2}) |u(t,y)|{sup 2}dy)u(t,x), x?R{sup N}, N ? 3. First, we establish the mass concentration property of the blow-up solutions. Second, we show that the blow-up solutions with minimal mass should concentrate at a critical point of k. Finally, under certain assumptions on global maximum points of k we establish nonexistence of such solutions.
Minimal circuit for a flux-controlled Majorana qubit in a quantum spin-Hall insulator
B. van Heck; T. Hyart; C. W. J. Beenakker
2014-07-10T23:59:59.000Z
We construct a minimal circuit, based on the top-transmon design, to rotate a qubit formed out of four Majorana zero-modes at the edge of a two-dimensional topological insulator. Unlike braiding operations, generic rotations have no topological protection, but they do allow for a full characterization of the coherence times of the Majorana qubit. The rotation is controlled by variation of the flux through a pair of split Josephson junctions in a Cooper pair box, without any need to adjust gate voltages. The Rabi oscillations of the Majorana qubit can be monitored via oscillations in the resonance frequency of the microwave cavity that encloses the Cooper pair box.
Non-geodesic motion in $f({\\mathcal G})$ gravity with non-minimal coupling
Morteza Mohseni
2009-11-14T23:59:59.000Z
The dynamics of test particles in $f(\\mathcal G)$ modified Gauss-Bonnet gravity is investigated. It is shown that in $f({\\mathcal G})$ gravity models with non-minimal coupling to matter, particles experience an extra force normal to their four-velocities and as a result move along non- geodesic world-lines. The explicit form of the extra force depends on the function of the Gauss-Bonnet term included in coupling term. The effects of this force on the relative accelerations of particles are studied.
Note: A method for minimizing oxide formation during elevated temperature nanoindentation
Cheng, I. C.; Hodge, A. M., E-mail: ahodge@usc.edu [Department of Aerospace and Mechanical Engineering, University of Southern California, 3650 McClintock Avenue OHE430, Los Angeles, California 90089 (United States); Garcia-Sanchez, E. [Department of Aerospace and Mechanical Engineering, University of Southern California, 3650 McClintock Avenue OHE430, Los Angeles, California 90089 (United States); Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, Av. Universidad S/N, San Nicolás de los Garza, NL 66450 (Mexico)
2014-09-15T23:59:59.000Z
A standardized method to protect metallic samples and minimize oxide formation during elevated-temperature nanoindentation was adapted to a commercial instrument. Nanoindentation was performed on Al (100), Cu (100), and W (100) single crystals submerged in vacuum oil at 200 °C, while the surface morphology and oxidation was carefully monitored using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The results were compared to room temperature and 200 °C nanoindentation tests performed without oil, in order to evaluate the feasibility of using the oil as a protective medium. Extensive surface characterization demonstrated that this methodology is effective for nanoscale testing.
Energy conditions in $f(T)$ gravity with non-minimal torsion-matter coupling
Zubair, M
2015-01-01T23:59:59.000Z
The present paper examines the validity of energy bounds in a modified theory of gravity involving non-minimal coupling of torsion scalar and perfect fluid matter. In this respect, we formulate the general inequalities of energy conditions by assuming the flat FRW universe. For the application of these bounds, we particularly focus on two specific models that are recently proposed in literature and also choose the power law cosmology. We find the feasible constraints on the involved free parameters and evaluate their possible ranges graphically for the consistency of these energy bounds.
Energy conditions in $f(T)$ gravity with non-minimal torsion-matter coupling
M. Zubair; Saira Waheed
2015-02-09T23:59:59.000Z
The present paper examines the validity of energy bounds in a modified theory of gravity involving non-minimal coupling of torsion scalar and perfect fluid matter. In this respect, we formulate the general inequalities of energy conditions by assuming the flat FRW universe. For the application of these bounds, we particularly focus on two specific models that are recently proposed in literature and also choose the power law cosmology. We find the feasible constraints on the involved free parameters and evaluate their possible ranges graphically for the consistency of these energy bounds.
Nikolic, Borivoje
922 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 42, NO. 4, APRIL 2007 Power and Area Minimization of California, Berkeley, CA 94704 USA. Digital Object Identifier 10.1109/JSSC.2007.892191 battery life
Babai, LÃ¡szlÃ³
Characterization of Trivalent Graphs with Minimal Eigenvalue Gap* Clemens Brand,a Barry Guiduli is the mirror image of one of these blocks. Each interior block is of the type: or (2) We will refer
Bertini, Robert L.
that minimizes vehicle emissions during design of routes in congested environments with time-dependent travel speeds, hard time windows, andcapacityconstraints.ThiscreatesanewtypeofVRP,theemissions vehicle routing problem (EVRP). BACKGROUND AND LITERATURE REVIEW There is extensive literature related to vehicle
Haworth, D.M.
2011-01-30T23:59:59.000Z
This report summarizes the waste minimization efforts undertaken by National Security TechnoIogies, LLC, for the U. S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), during calendar year 2010. The NNSA/NSO Pollution Prevention Program establishes a process to reduce the volume and toxicity of waste generated by NNSA/NSO activities and ensures that proposed methods of treatment, storage, and/or disposal of waste minimize potential threats to human health and the environment.
Droplet minimizers for the Gates-Lebowitz-Penrose free energy functional
E. A. Carlen; M. C. Carvalho; R. Esposito; J. L. Lebowitz; R. Marra
2009-05-21T23:59:59.000Z
We study the structure of the constrained minimizers of the Gates-Lebowitz-Penrose free-energy functional ${\\mathcal F}_{\\rm GLP}(m)$, non-local functional of a density field $m(x)$, $x\\in {\\mathcal T}_L$, a $d$-dimensional torus of side length $L$. At low temperatures, ${\\mathcal F}_{\\rm GLP}$ is not convex, and has two distinct global minimizers, corresponding to two equilibrium states. Here we constrain the average density $L^{-d}\\int_{{\\cal T}_L}m(x)\\dd x$ to be a fixed value $n$ between the densities in the two equilibrium states, but close to the low density equilibrium value. In this case, a "droplet" of the high density phase may or may not form in a background of the low density phase, depending on the values $n$ and $L$. We determine the critical density for droplet formation, and the nature of the droplet, as a function of $n$ and $L$. The relation between the free energy and the large deviations functional for a particle model with long-range Kac potentials, proven in some cases, and expected to be true in general, then provides information on the structure of typical microscopic configurations of the Gibbs measure when the range of the Kac potential is large enough.
Fields, D.E.; Emerson, C.J.
1984-08-01T23:59:59.000Z
The US Nuclear Regulatory Commission is currently considering revision of rule 10 CFR Part 20, which covers disposal of solid wastes containing minimal radioactivity. In support of these revised rules, we have evaluated the consequences of disposing of four waste streams at four types of disposal areas located in three different geographic regions. Consequences are expressed in terms of human exposures and associated health effects. Each geographic region has its own climate and geology. Example waste streams, waste disposal methods, and geographic regions chosen for this study are clearly specified. Monetary consequences of minimal activity waste disposal are briefly discussed. The PRESTO methodology was used to evaluate radionuclide transport and health effects. This methodology was developed to assess radiological impacts to a static local population for a 1000-year period following disposal. Pathways and processes of transit from the trench to exposed populations included the following considerations: groundwater transport, overland flow, erosion, surface water dilution, resuspension, atmospheric transport, deposition, inhalation, and ingestion of contaminated beef, milk, crops, and water. 12 references, 2 figures, 8 tables.
Minimally Invasive Radiologically Guided Intervention for the Treatment of Salivary Calculi
Brown, Jackie E.; Drage, Nicholas A. [Department of Dental Radiology, Guy's Dental Hospital, Guy's and St. Thomas' Dental Hospital Trust, London SE1 9RT (United Kingdom); Escudier, Michael P. [Department of Oral Medicine and Pathology, Guy's, King's and St. Thomas' Dental Institute, LondonSE1 9RT (United Kingdom); Wilson, Ron F. [Dental Clinical Research, Guy's, King's and St. Thomas' Dental Institute, London SE1 9RT (United Kingdom); McGurk, Mark [Department of Oral and Maxillofacial Surgery, Guy's, King's and St. Thomas' Dental Institute, LondonSE1 9RT (United Kingdom)
2002-10-15T23:59:59.000Z
Purpose: To describe the technique and examine the value of salivary stone extraction using a minimally invasive, radiologically guided approach as an alternative to salivary gland surgery for the treatment of benign salivary gland obstruction. Methods: Eighty-six cases of sialolithiasis (83 patients) were treated by stone removal using a Dormia basket under local anesthesia and fluoroscopic guidance. Postoperative assessment was made clinically at review, by sialogram and by questionnaire. Results: Of 86 cases of sialolithiasis treated, in 55 (64%)it was possible to remove all stones. In 12 cases (14%) part of a stone or some of a number of calculi were removed and in 19 cases (22%) the procedure failed. The commonest reason for failure was fixation of the stone within the duct. Symptoms at review (range 1-49 months, mean 17 months) were relieved in 55 of 67 (82%) of cases where a stone or portion of stone was removed. Conclusions:Stone removal from the salivary duct system by radiologically guided,minimally invasive approach is a simple procedure with low morbidity and high patient acceptance when appropriate selection criteria are applied. These criteria are considered and recommendations made.
Strong P invariance, neutron EDM and minimal Left-Right parity at LHC
Alessio Maiezza; Miha Nemevšek
2014-10-15T23:59:59.000Z
In the minimal Left-Right model the choice of left-right symmetry is twofold: either generalized parity $\\mathcal P$ or charge conjugation $\\mathcal C$. In the minimal model with spontaneously broken strict $\\mathcal P$, a large tree-level contribution to strong CP violation can be computed in terms of the spontaneous phase $\\alpha$. Searches for the neutron electric dipole moments then constrain the size of $\\alpha$. Following the latest update on indirect CP violation in the kaon sector, a bound on $W_R$ mass at $20 \\text{TeV}$ is set. Possible ways out of this bound, either by an additional relaxation mechanism or explicit breaking of $\\mathcal P$ are considered. To this end, the chiral loop of the neutron electric dipole moment at next-to-leading order is re-computed and provides an estimate of the weak contribution. Combining this constraint with other CP violating observables in the kaon sector allows for $M_{W_R} \\gtrsim 3 \\text{TeV}$. On the other hand, $\\mathcal C$-symmetry is free from such constraints, leaving the right-handed scale within the experimental reach.
Polymer uncrossing and knotting in protein folding, and their role in minimal folding pathways
Mohazab, Ali R
2012-01-01T23:59:59.000Z
We introduce a method for calculating the extent to which chain non-crossing is important in the most efficient, optimal trajectories or pathways for a protein to fold. This involves recording all unphysical crossing events of a ghost chain, and calculating the minimal uncrossing cost that would have been required to avoid such events. A depth-first tree search algorithm is applied to find minimal transformations to fold $\\alpha$, $\\beta$, $\\alpha/\\beta$, and knotted proteins. In all cases, the extra uncrossing/non-crossing distance is a small fraction of the total distance travelled by a ghost chain. Different structural classes may be distinguished by the amount of extra uncrossing distance, and the effectiveness of such discrimination is compared with other order parameters. It was seen that non-crossing distance over chain length provided the best discrimination between structural and kinetic classes. The scaling of non-crossing distance with chain length implies an inevitable crossover to entanglement-do...
Gogoladze, Ilia; Khalid, Rizwan; Shafi, Qaisar; Yueksel, Hasan [Bartol Research Institute, Department of Physics and Astronomy University of Delaware, Newark, Delaware 19716 (United States)
2009-03-01T23:59:59.000Z
Dark matter neutralinos in the constrained minimal supersymmetric model (CMSSM) may account for the recent cosmic ray electron and positron observations reported by the PAMELA and ATIC experiments either through self annihilation or via decay. However, to achieve this, both scenarios require new physics beyond the 'standard' CMSSM, and a unified explanation of the two experiments suggests a neutralino mass of order 700 GeV-2 TeV. A relatively light neutralino with mass around 100 GeV (300 GeV) can accommodate the PAMELA but not the ATIC observations based on a model of annihilating (decaying) neutralinos. We study the implications of these scenarios for Higgs and sparticle spectroscopy in the CMSSM and highlight some benchmark points. An estimate of neutrino flux expected from the annihilating and decaying neutralino scenarios is provided.
Classification of Kac representations in the logarithmic minimal models LM(1,p)
Jorgen Rasmussen
2010-12-23T23:59:59.000Z
For each pair of positive integers r,s, there is a so-called Kac representation (r,s) associated with a Yang-Baxter integrable boundary condition in the lattice approach to the logarithmic minimal model LM(1,p). We propose a classification of these representations as finitely-generated submodules of Feigin-Fuchs modules, and present a conjecture for their fusion algebra which we call the Kac fusion algebra. The proposals are tested using a combination of the lattice approach and applications of the Nahm-Gaberdiel-Kausch algorithm. We also discuss how the fusion algebra may be extended by inclusion of the modules contragredient to the Kac representations, and determine polynomial fusion rings isomorphic to the conjectured Kac fusion algebra and its contragredient extension.
Efimov states in Li-Cs mixtures within a minimal model
N. T. Zinner; N. G. Nygaard
2015-03-05T23:59:59.000Z
We use a minimal zero-range model for describing the bound state spectrum of three-body states consisting of two Cesium and one Lithium atom. Using a broad Feshbach resonance model for the two-body interactions, we show that recent experimental data can be described surprisingly well for particular values of the three-body parameter that governs the short-range behavior of the atomic potentials and is outside the scope of the zero-range model. Studying the spectrum as a function of the three-body parameter suggests that the lowest state seen in experiment could be influenced by finite range corrections. We also consider the question of Fermi degeneracy and corresponding Pauli blocking of the Lithium atoms on the Efimov states.
Elimination or Minimization of Oscillation Marks: A Path To Improved Cast Surface Quality
Dr. Alan W. Cramb
2007-12-17T23:59:59.000Z
Oscillation marks are the most recognizable feature of continuous casting and can be related to the subsurface defects that can be found on product rolled from continuous cast slabs. The purpose of this work was to develop strategies that can be used on industrial continuous casters to reduce oscillation mark depth and, in particular, to minimize the formation of hook type defects that are prevalent on ultra low carbon grades. The major focus of the work was on developing a technique to allow heat transfer in the meniscus region of the continuous caster to be measured and the effect of mold slag chemistry and chrystallization to be documented. A new experimental technique was developed that allowed the effect of mold flux chemistry and chrystallization on the radiation heat transfer rate to be measured dynamically.
Hamilton's principle: why is the integrated difference of kinetic and potential energy minimized?
Alberto G. Rojo
2005-04-02T23:59:59.000Z
I present an intuitive answer to an often asked question: why is the integrated difference K-U between the kinetic and potential energy the quantity to be minimized in Hamilton's principle? Using elementary arguments, I map the problem of finding the path of a moving particle connecting two points to that of finding the minimum potential energy of a static string. The mapping implies that the configuration of a non--stretchable string of variable tension corresponds to the spatial path dictated by the Principle of Least Action; that of a stretchable string in space-time is the one dictated by Hamilton's principle. This correspondence provides the answer to the question above: while a downward force curves the trajectory of a particle in the (x,t) plane downward, an upward force of the same magnitude stretches the string to the same configuration x(t).
Compact statis stars with polytropic equation of state in minimal dilatonic gravity
Plamen Fiziev; Kalin Marinov
2015-01-22T23:59:59.000Z
We present solution of the equations for relativistic static spherically symmetric stars (SSSS) in the model of minimal dilatonic gravity (MDG) using the polytropic equation of state. A polytropic equation of state, which has a good fitting with a more realistic one, is used. Results are obtained for all variables of a single neutron star in the model of MDG. The maximum mass about two solar masses is in accordance with the latest observations of pulsars. Several new effects are observed for the variables related with the dilaton $\\Phi$ and the cosmological constant $\\Lambda$. The mass-radius relation is also obtained. Special attention is paid to the behavior of the quantities which describe the effects analogous to those of dark energy and dark matter in MDG. The results of the present paper confirm the conclusion that the dilaton $\\Phi$ is able to play simultaneously the role of dark energy and dark matter.
Minimal Scalar Sector of 3-3-1 Models without Exotic Electric Charges
William A. Ponce; Yithsbey Giraldo; Luis A. Sanchez
2002-10-01T23:59:59.000Z
We study the minimal set of Higgs scalars, for models based on the local gauge group $SU(3)_c \\otimes SU(3)_L \\otimes U(1)_X$ which do not contain particles with exotic electric charges. We show that only two Higgs $SU(3)_L$ triplets are needed in order to properly break the symmetry. The exact tree-level scalar mass matrices resulting from symmetry breaking are calculated at the minimum of the most general scalar potential, and the gauge bosons are obtained, together with their couplings to the physical scalar fields. We show how the scalar sector introduced is enough to produce masses for fermions in a particular model which is an $E_6$ subgroup. By using experimental results we constrain the scale of new physics to be above 1.3 TeV.
Hepworth, H.K.; Davidson, J.S.; Hooyman, J.L.
1997-03-01T23:59:59.000Z
Commercially available admixtures have been developed for placing traditional concrete products under water. This paper evaluates adapting anti-washout admixture (AWA) and high range water reducing admixture (HRWRA) products to enhance controlled low-strength materials (CLSMs) for underwater placement. A simple experimental scale model (based on dynamic and geometric similitude) of typical grout pump emplacement equipment has been developed to determine the percentage of cementing material washed out. The objective of this study was to identify proportions of admixtures and underwater CLSM emplacement procedures which would minimize the cross-contamination of the displaced water while maintaining the advantages of CLSM. Since the displaced water from radioactively contaminated systems must be subsequently treated prior to release to the environment, the amount of cross-contamination is important for cases in which cementing material could form hard sludges in a water treatment facility and contaminate the in-place CLSM stabilization medium.
Summary of research on waste minimization studies by Japan Waste Research Foundation (JWRF)
Nabeshima, Yoshiro [Tamagawa Univ., Machida City, Tokyo (Japan)] [Tamagawa Univ., Machida City, Tokyo (Japan)
1996-12-31T23:59:59.000Z
Japan is trying to provide a qualitatively better environment and the treatment of incinerator gas emissions is an indispensable part of pollution prevention programs. Therefore, a large part of incinerator wastes will be disposed of in landfills for municipal solid waste, and volume reduction and stabilization are major items on the technology agenda. For these reasons, the purpose of this research is waste minimization, namely reducing the volume of wastes that must be disposed of in landfills. This is being done by studying ways to use heat treatment to reduce the volume of incinerator ash, to develop technology for the effective use of treated material and to render fly ash and fused salts harmless. In addition, the author seeks to establish more advanced municipal solid waste treatment systems that reduce (slim) waste by using space efficiently and recovering metals in incinerator residue and fly ash for recycling.
Scott Roger Shepard; Frederick Ira Moxley III; Jonathan P. Dowling
2014-09-08T23:59:59.000Z
Within the quantum phase representation we derive Heisenberg limits, in closed form, for N00N states and two other classes of states that can perform better in terms of local performance metrics relevant for multiply-peaked distributions. One of these can also enhance the super-resolution factor beyond that of a N00N state of the same power, at the expense of diminished fringe visibility. An accurate phase estimation algorithm, which can be applied to the minimally resourced apparatus of a standard interferometer, is shown to be resilient to the presence of additive white-Gaussian noise (AWGN). In the limit of no AWGN the algorithm achieves over nine digits of accuracy for the case of a four-photon N00N state - orders of magnitude below its Heisenberg limit.
Ellis, John [TH Division, Physics Department, CERN, 1211 Geneva 23 (Switzerland); Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Savage, Christopher [Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm (Sweden); Spanos, Vassilis C. [Department of Physics, University of Patras, GR-26500 Patras (Greece)
2010-04-15T23:59:59.000Z
We evaluate the neutrino fluxes to be expected from neutralino lightest supersymmetric particle (LSP) annihilations inside the Sun, within the minimal supersymmetric extension of the standard model with supersymmetry-breaking scalar and gaugino masses constrained to be universal at the grand unified theory scale [the constrained minimal supersymmetric standard model (CMSSM)]. We find that there are large regions of typical CMSSM (m{sub 1/2},m{sub 0}) planes where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate. We show that neutrino fluxes are dependent on the solar model at the 20% level, and adopt the AGSS09 model of Serenelli et al. for our detailed studies. We find that there are large regions of the CMSSM (m{sub 1/2},m{sub 0}) planes where the capture rate is not dominated by spin-dependent LSP-proton scattering, e.g., at large m{sub 1/2} along the CMSSM coannihilation strip. We calculate neutrino fluxes above various threshold energies for points along the coannihilation/rapid-annihilation and focus-point strips where the CMSSM yields the correct cosmological relic density for tan{beta}=10 and 55 for {mu}>0, exploring their sensitivities to uncertainties in the spin-dependent and -independent scattering matrix elements. We also present detailed neutrino spectra for four benchmark models that illustrate generic possibilities within the CMSSM. Scanning the cosmologically favored parts of the parameter space of the CMSSM, we find that the IceCube/DeepCore detector can probe at best only parts of this parameter space, notably the focus-point region and possibly also at the low-mass tip of the coannihilation strip.
Arnold, Patrick [NSTec] [NSTec
2014-02-14T23:59:59.000Z
This report summarizes the EPA identification number of each generator from which the Permittee received a waste stream, a description and quantity of each waste stream in tons and cubic feet received at the facility, the method of treatment, storage, and/or disposal for each waste stream, a description of the waste minimization efforts undertaken, a description of the changes in volume and toxicity of waste actually received, any unusual occurrences, and the results of tank integrity assessments. This Annual Summary/Waste Minimization Report is prepared in accordance with Section 2.13.3 of Permit Number NEV HW0101.
Giovanni Marco Pruna
2011-06-23T23:59:59.000Z
This Thesis is devoted to the study of the phenomenology of the Higgs sector of the minimal $B-L$ extension of the Standard Model at present and future colliders. Firstly, the motivations that call for the minimal $B-L$ extension are summarised. In addition, the model is analysed in its salient parts. Moreover, a detailed review of the phenomenological allowed Higgs sector parameter space is given. Finally, a complete survey of the distinctive Higgs boson signatures of the model at both the Large Hadron Collider and the future linear colliders is presented.
Modesto Montoya
2014-10-06T23:59:59.000Z
This work is focused on even-odd effects on the minimal total fragment excitation energy in thermal neutron induced fission of 233U and 235U as well as in spontaneous fission of 252Cf. In a scission model, taking into account the fragment deformation properties and Coulomb interaction between fragments, the expression of the difference between Q-values referred to even/even and odd/odd charge splits, respectively, on the corresponding difference between the minimal total fragment excitation energy is studied.
The Effect of Quark Sector Minimal Flavor Violation on Neutrinoless Double Beta Decay
Brian Dudley; Christopher Kolda
2008-10-16T23:59:59.000Z
The question of whether neutrino masses are Dirac or Majorana is one of the most important, and most difficult, questions remaining in the neutrino sector. Searches for neutrinoless double beta-decay may help to resolve this question, but are also sensitive to new, higher dimension Delta L=2 operators. In this paper we place two phenomenological constraints on these operators at dimension d<=11. First, we require that the operators obey the quark flavor symmetries of the Standard Model, with any violation of the symmetries being due to Yukawa interactions, a scheme known as Minimal Flavor Violation (MFV). Second, we require that the operators which generate neutrinoless double beta-decay, and any operators related by the flavor symmetries, do not induce neutrino masses above 0.05 eV, the limit implied by the atmospheric neutrino data. We find that these requirements severely constrain the operators which can violate lepton number, such that most can no longer contribute to neutrinoless double beta-decay at observable rates. It is noteworthy that quark flavor symmetries can play such a strong role in constraining new leptonic physics, even when that physics is not quark flavor changing. Those few operators that can mimic a Majorana neutrino mass then appear with cutoffs below a TeV, and represent new physics which could be directly probed at the LHC or a future linear collider.
Robert S. Whitney
2015-01-28T23:59:59.000Z
We investigate the nonlinear scattering theory for quantum systems with strong Seebeck and Peltier effects, and consider their use as heat-engines and refrigerators with finite power outputs. This article gives detailed derivations of the results summarized in Phys. Rev. Lett. 112, 130601 (2014). It shows how to use the scattering theory to find (i) the quantum thermoelectric with maximum possible power output, and (ii) the quantum thermoelectric with maximum efficiency at given power output. The latter corresponds to a minimal entropy production at that power output. These quantities are of quantum origin since they depend on system size over electronic wavelength, and so have no analogue in classical thermodynamics. The maximal efficiency coincides with Carnot efficiency at zero power output, but decreases with increasing power output. This gives a fundamental lower bound on entropy production, which means that reversibility (in the thermodynamic sense) is impossible for finite power output. The suppression of efficiency by (nonlinear) phonon and photon effects is addressed in detail; when these effects are strong, maximum efficiency coincides with maximum power. Finally, we show in particular limits (typically without magnetic fields) that relaxation within the quantum system does not allow the system to exceed the bounds derived for relaxation-free systems, however a general proof of this remains elusive.
Integrable Boundary Conditions and W-Extended Fusion in the Logarithmic Minimal Models LM(1,p)
Paul A. Pearce; Jorgen Rasmussen; Philippe Ruelle
2008-03-06T23:59:59.000Z
We consider the logarithmic minimal models LM(1,p) as `rational' logarithmic conformal field theories with extended W symmetry. To make contact with the extended picture starting from the lattice, we identify 4p-2 boundary conditions as specific limits of integrable boundary conditions of the underlying Yang-Baxter integrable lattice models. Specifically, we identify 2p integrable boundary conditions to match the 2p known irreducible W-representations. These 2p extended representations naturally decompose into infinite sums of the irreducible Virasoro representations (r,s). A further 2p-2 reducible yet indecomposable W-representations of rank 2 are generated by fusion and these decompose as infinite sums of indecomposable rank-2 Virasoro representations. The fusion rules in the extended picture are deduced from the known fusion rules for the Virasoro representations of LM(1,p) and are found to be in agreement with previous works. The closure of the fusion algebra on a finite number of representations in the extended picture is remarkable confirmation of the consistency of the lattice approach.
Gerardo Cristofano; Vincenzo Marotta; Adele Naddeo; Giuliano Niccoli
2008-10-16T23:59:59.000Z
Recently a one-dimensional closed ladder of Josephson junctions has been studied (G. Cristofano et al., Phys. Lett. A 372 (2008) 2464) within a twisted conformal field theory (CFT) approach (G. Cristofano et al., Mod. Phys. Lett. A 15 (2000) 1679; Nucl. Phys. B 641 (2002) 547) and shown to develop the phenomenon of flux fractionalization (G. Cristofano et al., Eur. Phys. J. B 49 (2006) 83). That led us to predict the emergence of a topological order in such a system (G. Cristofano et al., JSTAT (2005) P03006). In this letter we analyze the ground states and the topological properties of fully frustrated Josephson junction arrays (JJA) arranged in a Corbino disk geometry for a variety of boundary conditions. In particular minimal configurations of fully frustrated JJA are considered and shown to exhibit the properties needed in order to build up a solid state qubit, protected from decoherence. The stability and transformation properties of the ground states of the JJA under adiabatic magnetic flux changes are analyzed in detail in order to provide a tool for the manipulation of the proposed qubit.
Spatial light modulator array with heat minimization and image enhancement features
Jain, Kanti (Briarcliff Manor, NY); Sweatt, William C. (Albuquerque, NM); Zemel, Marc (New Rochelle, NY)
2007-01-30T23:59:59.000Z
An enhanced spatial light modulator (ESLM) array, a microelectronics patterning system and a projection display system using such an ESLM for heat-minimization and resolution enhancement during imaging, and the method for fabricating such an ESLM array. The ESLM array includes, in each individual pixel element, a small pixel mirror (reflective region) and a much larger pixel surround. Each pixel surround includes diffraction-grating regions and resolution-enhancement regions. During imaging, a selected pixel mirror reflects a selected-pixel beamlet into the capture angle of a projection lens, while the diffraction grating of the pixel surround redirects heat-producing unused radiation away from the projection lens. The resolution-enhancement regions of selected pixels provide phase shifts that increase effective modulation-transfer function in imaging. All of the non-selected pixel surrounds redirect all radiation energy away from the projection lens. All elements of the ESLM are fabricated by deposition, patterning, etching and other microelectronic process technologies.
Ten scenarios from early radiation to late time acceleration with a minimally coupled dark energy
Fay, Stephane
2015-01-01T23:59:59.000Z
We consider General Relativity with matter, radiation and a minimally coupled dark energy defined by an equation of state w. Using dynamical system method, we find the equilibrium points of such a theory assuming an expanding Universe and a positive dark energy density. Two of these points correspond to classical radiation and matter dominated epochs for the Universe. For the other points, dark energy mimics matter, radiation or accelerates Universe expansion. We then look for possible sequences of epochs describing a Universe starting with some radiation dominated epoch(s) (mimicked or not by dark energy), then matter dominated epoch(s) (mimicked or not by dark energy) and ending with an accelerated expansion. We find ten sequences able to follow this Universe history without singular behaviour of w at some saddle points. Most of them are new in dark energy literature. To get more than these ten sequences, w has to be singular at some specific saddle equilibrium points. This is an unusual mathematical proper...
Tocchini-Valentini, Domenico; Barnard, Michael; Bennett, Charles L.; Szalay, Alexander S., E-mail: dtv@pha.jhu.edu [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218-2686 (United States)
2012-10-01T23:59:59.000Z
We present a method to extract the redshift-space distortion {beta} parameter in configuration space with a minimal set of cosmological assumptions. We show that a novel combination of the observed monopole and quadrupole correlation functions can remove efficiently the impact of mild nonlinearities and redshift errors. The method offers a series of convenient properties: it does not depend on the theoretical linear correlation function, the mean galaxy density is irrelevant, only convolutions are used, and there is no explicit dependence on linear bias. Analyses based on dark matter N-body simulations and Fisher matrix demonstrate that errors of a few percent on {beta} are possible with a full-sky, 1 (h {sup -1} Gpc){sup 3} survey centered at a redshift of unity and with negligible shot noise. We also find a baryonic feature in the normalized quadrupole in configuration space that should complicate the extraction of the growth parameter from the linear theory asymptote, but that does not have a major impact on our method.
Pallan, Pradeep S.; Marshall, William S.; Harp, Joel; Jewett III, Frederic C.; Wawrzak, Zdzislaw; Brown II, Bernard A.; Rich, Alexander; Egli, Martin (MIT); (Wake Forest); (Dharmacon); (Vanderbilt)
2010-03-08T23:59:59.000Z
To understand the role of structural elements of RNA pseudoknots in controlling the extent of -1-type ribosomal frameshifting, we determined the crystal structure of a high-efficiency frameshifting mutant of the pseudoknot from potato leaf roll virus (PLRV). Correlations of the structure with available in vitro frameshifting data for PLRV pseudoknot mutants implicate sequence and length of a stem-loop linker as modulators of frameshifting efficiency. Although the sequences and overall structures of the RNA pseudoknots from PLRV and beet western yellow virus (BWYV) are similar, nucleotide deletions in the linker and adjacent minor groove loop abolish frameshifting only with the latter. Conversely, mutant PLRV pseudoknots with up to four nucleotides deleted in this region exhibit nearly wild-type frameshifting efficiencies. The crystal structure helps rationalize the different tolerances for deletions in the PLRV and BWYV RNAs, and we have used it to build a three-dimensional model of the PRLV pseudoknot with a four-nucleotide deletion. The resulting structure defines a minimal RNA pseudoknot motif composed of 22 nucleotides capable of stimulating -1-type ribosomal frameshifts.
On neutrinoless double beta decay in the minimal left-right symmetric model
Wei-Chih Huang; J. Lopez-Pavon
2014-04-14T23:59:59.000Z
We analyze the general phenomenology of neutrinoless double beta decay in the minimal left-right symmetric model. We study under which conditions a New Physics dominated neutrinoless double beta decay signal can be expected in the future experiments. We show that the correlation among the different contributions to the process, which arises from the neutrino mass generation mechanism, can play a crucial role. We have found that, if no fine tuned cancellation is involved in the light active neutrino contribution, a New Physics signal can be expected mainly from the $W_R-W_R$ channel. An interesting exception is the $W_L-W_R$ channel which can give a dominant contribution to the process if the right-handed neutrino spectrum is hierarchical with $M_1\\lesssim$ MeV and $M_2,M_3\\gtrsim$ GeV. We also discuss if a New Physics signal in neutrinoless double beta decay experiments is compatible with the existence of a successful Dark Matter candidate in the left-right symmetric models. It turns out that, although it is not a generic feature of the theory, it is still possible to accommodate such a signal with a KeV sterile neutrino as Dark matter.
Effect of quark sector minimal flavor violation on neutrinoless double beta decay
Dudley, Brian; Kolda, Christopher [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2009-01-01T23:59:59.000Z
The question of whether neutrino masses are Dirac or Majorana is one of the most important, and most difficult, questions remaining in the neutrino sector. Searches for neutrinoless double {beta} decay may help to resolve this question, but are also sensitive to new, higher-dimension {delta}L=2 operators. In this paper we place two phenomenological constraints on these operators at dimension d{<=}11. First, we require that the operators obey the quark flavor symmetries of the standard model, with any violation of the symmetries being due to Yukawa interactions, a scheme known as minimal flavor violation. Second, we require that the operators which generate neutrinoless double {beta} decay, and any operators related by the flavor symmetries, do not induce neutrino masses above the experimental and astrophysical limits. We find that these requirements severely constrain the operators which can violate lepton number, such that most can no longer contribute to neutrinoless double {beta} decay at observable rates. It is noteworthy that quark flavor symmetries can play such a strong role in constraining new leptonic physics, even when that physics is not quark flavor changing. Those few operators that can mimic a Majorana neutrino mass then appear with cutoffs below a TeV, and represent new physics which could be directly probed at the LHC or a future linear collider.
Minimally allowed neutrinoless double beta decay rates from approximate flavor symmetries
Jenkins, James [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States) and Northwestern University, Department of Physics and Astronomy, Evanston, Illinois 60208 (United States)
2009-06-01T23:59:59.000Z
Neutrinoless double beta decay ({beta}{beta}0{nu}) is among the only realistic probes of Majorana neutrinos. In the standard scenario, dominated by light neutrino exchange, the process amplitude is proportional to m{sub ee}, the e-e element of the Majorana mass matrix. Naively, current data allow for vanishing m{sub ee}, but this should be protected by an appropriate flavor symmetry. All such symmetries lead to mass matrices inconsistent with oscillation phenomenology. I perform a spurion analysis to break all possible Abelian symmetries that guarantee vanishing {beta}{beta}0{nu} rates and search for minimally allowed values. I survey 230 broken structures to yield m{sub ee} values and current phenomenological constraints under a variety of scenarios. This analysis also extracts predictions for both neutrino oscillation parameters and kinematic quantities. Assuming reasonable tuning levels, I find that m{sub ee}>4x10{sup -6} eV at 99% confidence. Bounds below this value might indicate the Dirac neutrino nature or the existence of new light (eV-MeV scale) degrees of freedom that can potentially be probed elsewhere.
Minimally allowed neutrinoless double beta decay rates within an anarchical framework
Jenkins, James [Northwestern University, Department of Physics and Astronomy, 2145 Sheridan Road, Evanston, Illinois 60208 (United States)
2009-06-01T23:59:59.000Z
Neutrinoless double beta decay ({beta}{beta}0{nu}) is the only realistic probe of the Majorana nature of the neutrino. In the standard picture, its rate is proportional to m{sub ee}, the e-e element of the Majorana neutrino mass matrix in the flavor basis. I explore minimally allowed m{sub ee} values within the framework of mass matrix anarchy where neutrino parameters are defined statistically at low energies. Distributions of mixing angles are well defined by the Haar integration measure, but masses are dependent on arbitrary weighting functions and boundary conditions. I survey the integration measure parameter space and find that for sufficiently convergent weightings, m{sub ee} is constrained between (0.01-0.4) eV at 90% confidence. Constraints from neutrino mixing data lower these bounds. Singular integration measures allow for arbitrarily small m{sub ee} values with the remaining elements ill-defined, but this condition constrains the flavor structure of the model's ultraviolet completion. {beta}{beta}0{nu} bounds below m{sub ee}{approx}5x10{sup -3} eV should indicate symmetry in the lepton sector, new light degrees of freedom, or the Dirac nature of the neutrino.
Robert S. Whitney
2015-03-16T23:59:59.000Z
We investigate the nonlinear scattering theory for quantum systems with strong Seebeck and Peltier effects, and consider their use as heat-engines and refrigerators with finite power outputs. This article gives detailed derivations of the results summarized in Phys. Rev. Lett. 112, 130601 (2014). It shows how to use the scattering theory to find (i) the quantum thermoelectric with maximum possible power output, and (ii) the quantum thermoelectric with maximum efficiency at given power output. The latter corresponds to a minimal entropy production at that power output. These quantities are of quantum origin since they depend on system size over electronic wavelength, and so have no analogue in classical thermodynamics. The maximal efficiency coincides with Carnot efficiency at zero power output, but decreases with increasing power output. This gives a fundamental lower bound on entropy production, which means that reversibility (in the thermodynamic sense) is impossible for finite power output. The suppression of efficiency by (nonlinear) phonon and photon effects is addressed in detail; when these effects are strong, maximum efficiency coincides with maximum power. Finally, we show in particular limits (typically without magnetic fields) that relaxation within the quantum system does not allow the system to exceed the bounds derived for relaxation-free systems, however, a general proof of this remains elusive.
Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model
Wan-lei Guo; Zhi-zhong Xing; Shun Zhou
2006-12-05T23:59:59.000Z
We present a review of neutrino phenomenology in the minimal seesaw model (MSM), an economical and intriguing extension of the Standard Model with only two heavy right-handed Majorana neutrinos. Given current neutrino oscillation data, the MSM can predict the neutrino mass spectrum and constrain the effective masses of the tritium beta decay and the neutrinoless double-beta decay. We outline five distinct schemes to parameterize the neutrino Yukawa-coupling matrix of the MSM. The lepton flavor mixing and baryogenesis via leptogenesis are investigated in some detail by taking account of possible texture zeros of the Dirac neutrino mass matrix. We derive an upper bound on the CP-violating asymmetry in the decay of the lighter right-handed Majorana neutrino. The effects of the renormalization-group evolution on the neutrino mixing parameters are analyzed, and the correlation between the CP-violating phenomena at low and high energies is highlighted. We show that the observed matter-antimatter asymmetry of the Universe can naturally be interpreted through the resonant leptogenesis mechanism at the TeV scale. The lepton-flavor-violating rare decays, such as $\\mu \\to e + \\gamma$, are also discussed in the supersymmetric extension of the MSM.
Lenling, William J. (Madison, WI); Henfling, Joseph A. (Bosque Farms, NM); Smith, Mark F. (Albuquerque, NM)
1993-06-08T23:59:59.000Z
A method is disclosed for spray coating material which employs a plasma gun that has a cathode, an anode, an arc gas inlet, a first powder injection port, and a second powder injection port. A suitable arc gas is introduced through the arc gas inlet, and ionization of the arc gas between the cathode and the anode forms a plasma. The plasma is directed to emenate from an open-ended chamber defined by the boundary of the anode. A coating is deposited upon a base metal part by suspending a binder powder within a carrier gas that is fed into the plasma through the first powder injection port; a material subject to degradation by high temperature oxygen reactions is suspended within a carrier gas that is fed into the plasma through the second injection port. The material fed through the second injection port experiences a cooler portion of the plasma and has a shorter dwell time within the plasma to minimize high temperature oxygen reactions. The material of the first port and the material of the second port intermingle within the plasma to form a uniform coating having constituent percentages related to the powder-feed rates of the materials through the respective ports.
Sandborn, Peter
process. 1 Validation cost usually includes engineering and capital expenses associated with full, where a validation engineer is expected to estimate validation cost based on the reliabilityMinimization of Life Cycle Costs Through Optimization of the Validation Program A Test Sample