The oil price and non-OPEC supplies
Seymour, A.
1991-01-01
The design of any effective oil pricing policy by producers depends on a knowledge of the nature and complexity of supply responses. This book examines the development of non-OPEX oil reserves on a field-by-filed basis to determine how much of the increase in non-OPEC production could be attributable to the price shocks and how much was unambiguously due to decisions and developments that preceded the price shocks. Results are presented in eighteen case-studies of non-OPEC producers. This study will be of interest to economists and planners specializing in the upstream and to policy makers both in oil producing and consuming countries.
Non-OPEC oil supply gains to outpace demand in 1997
Beck, R.J.
1997-01-27
Rising oil supplies in 1997 will relax some of the market tightness that drove up crude prices last year. Worldwide demand for petroleum products in 1996 rose faster than anticipated and faster than supply from outside the Organization of Petroleum Exporting Countries. This increased demand for OPEC oil and pushed up prices for crude. At year end, the world export price of crude was up more than 25% from the same period a year earlier. Market conditions will change in 1997. While worldwide economic growth will continue to boost demand for energy and petroleum, non-OPEC petroleum supply will grow even more. Increases in North Sea and Latin American production will help boost non-OPEC output by 1.9 million b/d. And revenues from 1996 production gains will make additional investment possible in exploration and production. The paper discusses world economic growth, world oil demand, worldwide supply, supply outlook, prices and international drilling.
Fact #836: September 1, Non-OPEC Countries Supply Nearly Two...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
of OPEC (Organization of the Petroleum Exporting Countries) are shown in shades of blue while non-OPEC countries are shown in shades of green. Petroleum imports rose sharply...
Non-OPEC oil supply continues to grow
Knapp, D.H. [International Energy Agency, Paris (France)
1995-12-25
Global reserves of crude oil remain at 1 trillion bbl, according to OGJ`s annual survey of producing countries. Significant gains are in Brazil, Colombia, Congo, Egypt, Libya, Nigeria, Oman, and Papua New Guinea. Decreases were reported by Indonesia, Norway, the U.K., Iran, Canada, Mexico, and the US. Natural gas reserves slipped to 4.9 quadrillion cu ft. The major production trend is a lasting surge from outside of OPEC. This year`s Worldwide Production report begins with a detailed analysis of this crucial development by an international authority. This article discusses the OECD outlook by region and the turnaround in production in the former Soviet Union.
Non-OPEC oil production set to decline for the first time since 2008
Gasoline and Diesel Fuel Update (EIA)
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Shifting production trends point to more oil from OPEC
Ismail, I.A.H. (Organization of Petroleum Exporting Countries, Vienna (Austria))
1994-12-26
Oil production from the Organization of Petroleum Exporting Countries and non-OPEC regions has undergone four major phases of change in relation to oil price since 1960. Patterns visible in those phases offer an indication of world-wide production trends in the future. These four phases are described. Overall, demand for oil during 1960--93 has increased from around 20 million b/d in 1960 to as high as 65 million b/d in 1993. The consensus among energy analysts and forecasters is that this demand growth will continue. This will encourage OPEC and non OPEC producers to invest in the oil industry to meet future demand growth. However, since the resource base is larger in OPEC than in non-OPEC areas, and since the cost of developing these resources is lower in OPEC than outside OPEC, the future call on OPEC oil to meet growth in demand will undoubtedly be substantiated as production from the non-OPEC region diminishes or at best stagnates. The paper discusses OPEC production trends, non-OPEC production, natural gas liquids, future production scenarios, and future constraints on production.
Commercial Light Water Production of Tritium Update and Path...
Office of Environmental Management (EM)
Light Water Production of Tritium: Update and Path Forward Dave Senor April 23, 2013 Tritium Focus Group 1 PNNL-SA-94431 Background United States defense maintains a stockpile of...
Spin Description in the Star Product and the Path Integral Formalism
S. Odendahl; P. Henselder
2007-05-24
The spin can be described in the star product formalism by extending the bosonic Moyal product in the fermionic sector. The fermionic star product is then the Clifford product of geometric algebra and it is possible to formulate the fermionic star product formalism in analogy to the bosonic star product formalism. For the fermionic star product description of spin, one can then establish the relation to other approaches that describe spin with fermionic variables, i.e. the operator formalism and the path integral formalism. It is shown that the fermionic star product formalism and the fermionic path integral formalism are related in analogy to their bosonic counterparts.
Tax policy can change the production path: A model of optimal oil extraction in Alaska
Lin, C.-Y. Cynthia
1 Tax policy can change the production path: A model of optimal oil extraction in Alaska Wayne@primal.ucdavis.edu * Corresponding author ABSTRACT We model the economically optimal dynamic oil production decisions for seven and an estimated inverse production function, which incorporates engineering aspects of oil production into our
Weak convergence of complex-valued measure for bi-product path space induced by quantum walk
Norio Konno; Etsuo Segawa
2012-08-30
In this paper, a complex-valued measure of bi-product path space induced by quantum walk is presented. In particular, we consider three types of conditional return paths in a power set of the bi-product path space (1) $\\Lambda \\times \\Lambda $, (2) $\\Lambda \\times \\Lambda'$ and (3) $\\Lambda'\\times \\Lambda'$, where $\\Lambda$ is the set of all $2n$-length ($n\\in \\mathbb{N}$) return paths and $\\Lambda'(\\subseteq \\Lambda)$ is the set of all $2n$-length return paths going through $nx$ ($x\\in [-1,1]$) at time $n$. We obtain asymptotic behaviors of the complex-valued measures for the situations (1)-(3) which imply two kinds of weak convergence theorems (Theorems 1 and 2). One of them suggests a weak limit of weak values.
Greybody factors for Schwarzschild black holes: Path-ordered exponentials and product integrals
Finnian Gray; Matt Visser
2015-12-16
In recent work concerning the sparsity of the Hawking flux [arXiv:1506.03975v2], we found it necessary to re-examine what is known regarding the greybody factors of black holes, with a view to extending and expanding on some old results from the 1970s. Focussing specifically on Schwarzschild black holes, we re-calculated and re-assessed the greybody factors using a path-ordered-exponential approach, a technique which has the virtue of providing a semi-explicit formula for the relevant Bogoliubov coefficients. These path-ordered-exponentials, (being based on a "transfer matrix" formalism), are closely related to so-called "product integrals", leading to quite straightforward and direct numerical evaluation, while avoiding any need for numerically solving differential equations. Furthermore, while considerable analytic information is already available regarding both the high-frequency and low-frequency asymptotics of these greybody factors, numerical approaches seem better adapted to finding suitable "global models" for these greybody factors in the intermediate frequency regime, where most of the Hawking flux is concentrated. Working in a more general context, these path-ordered-exponential techniques are also likely to be of interest for generic barrier-penetration problems.
Muxin Han
2009-11-17
This article serves as a continuation for the discussion in arXiv:0911.3433, we analyze the invariance properties of the gravity path-integral measure derived from canonical framework, and discuss which path-integral formula may be employed in the concrete computation e.g. constructing a spin-foam model, so that the final model can be interpreted as a physical inner product in the canonical theory.
Household energy use in non-OPEC developing countries
Fernandez, J.C.
1980-05-01
Energy use in the residential sector in India, Brazil, Mexico, the Republic of Korea, the Sudan, Pakistan, Malaysia, and Guatemala is presented. Whenever possible, information is included on the commercial fuels (oil, gas, coal, and electricity) and on what are termed noncommercial fuels (firewood, animal dung, and crop residues). Of special interest are the differences in the consumption patterns of urban and rural areas, and of households at different income levels. Where the data allow, the effect of household size on energy consumption is discussed. Section II is an overview of the data for all eight countries. Section III examines those areas (India, Brazil, Mexico City) for which data exist on the actual quantity of energy consumed by households. Korea, the Sudan, and Pakistan, which collect data on household expenditures on fuels, are discussed in Section IV. The patterns of ownership of energy-using durables in Malaysia and Guatemala are discussed in Section V. (MCW)
Global production through 2005
Foreman, N.E.
1996-12-01
Two companion studies released recently should provide great food for thought among geo-political strategists and various national governments. If predictions contained in these Petroconsultants studies of oil and gas production trends for the next 10 years are realized, there will be great repercussions for net exporters and importers, alike. After analyzing and predicting trends within each of the world`s significant producing nations for the 1996--2005 period, the crude oil and condensate report concludes tat global production will jump nearly 24%. By contrast, worldwide gas output will leap 40%. The cast of characters among producers and exporters that will benefit from these increases varies considerably for each fuel. On the oil side, Russia and the OPEC members, particularly the Persian Gulf nations, will be back in the driver`s seat in terms of affecting export and pricing patterns. On the gas side, the leading producers will be an interesting mix of mostly non-OPEC countries. The reemergence of Persian Gulf oil producers, coupled with an anticipated long-term decline among top non-OPEC producing nations should present a sobering picture to government planners within large net importers, such as the US. They are likely to find themselves in much the same supply trap as was experienced in the 1970s, only this time the dependence on foreign oil supplies will be much worse. Gas supplies will not be similarly constrained, and some substitution for oil is probable. Here, two articles, ``World oil industry is set for transition`` and ``Worldwide gas surges forward in next decade,`` present a summary of the findings detailed in Petroconsultants` recent studies.
Zare, Richard N.
Reaction Products with Internal Energy beyond the Kinematic Limit Result from Trajectories Far from the minimum energy path are, in general, responsible for production of highly internally excited products-7 For this collision energy and product vibrational level, rotational states j e 18 are energetically allowed, but only
World Oil Prices and Production Trends in AEO2008 (released in AEO2008)
Reports and Publications (EIA)
2008-01-01
Annual Energy Outlook 2008 (AEO) defines the world oil price as the price of light, low-sulfur crude oil delivered in Cushing, Oklahoma. Since 2003, both "above ground" and "below ground" factors have contributed to a sustained rise in nominal world oil prices, from $31 per barrel in 2003 to $69 per barrel in 2007. The AEO2008 reference case outlook for world oil prices is higher than in the AEO2007 reference case. The main reasons for the adoption of a higher reference case price outlook include continued significant expansion of world demand for liquids, particularly in non-OECD (Organization for Economic Cooperation and Development) countries, which include China and India; the rising costs of conventional non-OPEC (Organization of the Petroleum Exporting Countries) supply and unconventional liquids production; limited growth in non-OPEC supplies despite higher oil prices; and the inability or unwillingness of OPEC member countries to increase conventional crude oil production to levels that would be required for maintaining price stability. The Energy Information Administration will continue to monitor world oil price trends and may need to make further adjustments in future AEOs.
ARM - PI Product - Large Scale Ice Water Path and 3-D Ice Water Content
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Engelder, Terry
By Terry Engelder and Gary G. Lash UNIVERSITY PARK, PA.The shale gas rush is on. Excitement over natural gas production from a number of Devonian-Mississippian black shales such as the Barnett by the Eastern Gas Shales Project (EGSP), a U.S. Department of Energy-sponsored investigation of gas potential
Gómez de la Mora, Luz de Lourdes
2005-01-01
The fundamental goal of Robust Design is to improve the quality of a product by minimizing the effects of variation. A key contributor to robustness over the long term is R&D. Therefore, a framework is desired to help ...
Fact #836: September 1, 2014 Non-OPEC Countries Supply Nearly Two-thirds of
Broader source: Energy.gov (indexed) [DOE]
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Microsoft Word - STEO supplement non-OPEC supply Final-2.doc
Gasoline and Diesel Fuel Update (EIA)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See(STEO) Highlights11 1April0 15)5)09 108
Software-based tool path evaluation for environmental sustainability
KONG, DAEYOUNG; Seungchoun Choi; Yusuke Yasui; Sushrut Pavanaskar; Dornfeld, David; Wright, Paul
2011-01-01
productivity, while the sustainability and energy ef?ciencyof sustainability of a tool path (i.e. energy consumption
Path Coupling and Aggregate Path Coupling
Kovchegov, Yevgeniy
2015-01-01
In this survey paper, we describe and characterize an extension to the classical path coupling method applied statistical mechanical models, referred to as aggregate path coupling. In conjunction with large deviations estimates, we use this aggregate path coupling method to prove rapid mixing of Glauber dynamics for a large class of statistical mechanical models, including models that exhibit discontinuous phase transitions which have traditionally been more difficult to analyze rigorously. The parameter region for rapid mixing for the generalized Curie-Weiss-Potts model is derived as a new application of the aggregate path coupling method.
Path Coupling and Aggregate Path Coupling
Yevgeniy Kovchegov; Peter T. Otto
2015-01-13
In this survey paper, we describe and characterize an extension to the classical path coupling method applied statistical mechanical models, referred to as aggregate path coupling. In conjunction with large deviations estimates, we use this aggregate path coupling method to prove rapid mixing of Glauber dynamics for a large class of statistical mechanical models, including models that exhibit discontinuous phase transitions which have traditionally been more difficult to analyze rigorously. The parameter region for rapid mixing for the generalized Curie-Weiss-Potts model is derived as a new application of the aggregate path coupling method.
Nigeria`s oil production behavior: Tests of alternative hypotheses
Awokuse, T.O.; Jones, C.T.
1994-12-31
The sudden quadrupling of world oil prices in 1973-1974 marked the beginning of several formal inquiries by economists into the production behavior of members of the Organization of the Petroleum Exporting Countries (OPEC). Interest in the organization was further heightened in 1979 when nominal oil prices further doubled. However, oil market analysts have differed in their evaluation of OPEC`s role in the determination of world oil prices. Most energy economists have modeled OPEC as a cartel. Morris Adelman has suggested that OPEC`s true nature lies somewhere between two polar cases of a dominant-firm industry and an imperfect, market-sharing cartel. In the former case, one large, dominant firm (i.e., Saudi Arabia) serves as the {open_quotes}swing producer,{close_quotes} allowing other cartel members and non-OPEC oil producers to produce whatever they wished, controlling the market price by itself through its own output adjustments. The latter case of an imperfect market-sharing cartel is a loose collusive arrangement in which all members agree on an acceptable price level and individual output shares for each producer. Adelman believes that OPEC wobbles between these two cases, depending upon market conditions.
Seth Lloyd; Olaf Dreyer
2013-02-12
Path integrals represent a powerful route to quantization: they calculate probabilities by summing over classical configurations of variables such as fields, assigning each configuration a phase equal to the action of that configuration. This paper defines a universal path integral, which sums over all computable structures. This path integral contains as sub-integrals all possible computable path integrals, including those of field theory, the standard model of elementary particles, discrete models of quantum gravity, string theory, etc. The universal path integral possesses a well-defined measure that guarantees its finiteness, together with a method for extracting probabilities for observable quantities. The universal path integral supports a quantum theory of the universe in which the world that we see around us arises out of the interference between all computable structures.
Tortuous path chemical preconcentrator
Manginell, Ronald P. (Albuquerque, NM); Lewis, Patrick R. (Albuquerque, NM); Adkins, Douglas R. (Albuquerque, NM); Wheeler, David R. (Albuquerque, NM); Simonson, Robert J. (Cedar Crest, NM)
2010-09-21
A non-planar, tortuous path chemical preconcentrator has a high internal surface area having a heatable sorptive coating that can be used to selectively collect and concentrate one or more chemical species of interest from a fluid stream that can be rapidly released as a concentrated plug into an analytical or microanalytical chain for separation and detection. The non-planar chemical preconcentrator comprises a sorptive support structure having a tortuous flow path. The tortuosity provides repeated twists, turns, and bends to the flow, thereby increasing the interfacial contact between sample fluid stream and the sorptive material. The tortuous path also provides more opportunities for desorption and readsorption of volatile species. Further, the thermal efficiency of the tortuous path chemical preconcentrator is comparable or superior to the prior non-planar chemical preconcentrator. Finally, the tortuosity can be varied in different directions to optimize flow rates during the adsorption and desorption phases of operation of the preconcentrator.
Fact #836: September 1, Non-OPEC Countries Supply Nearly Two-thirds of U.S. Petroleum Imports
Broader source: Energy.gov [DOE]
The figure below shows the volume and source of imported petroleum to the United States from 1960 to 2013. The countries which are members of OPEC (Organization of the Petroleum Exporting Countries...
Lin, C.-Y. Cynthia
costs (Farzin, 1992; Hanson, 1980; Solow & Wan, 1976), exploration (Pesaran, 1990; Pindyck, 1978; Pindyck, 1980), and drilling activity (Anderson, Kel- logg & Salant, 2014). Cremer and Salehi
Sullivan, Blair D; Seymour, Dr. Paul Douglas
2010-01-01
Say a digraph is k-free if it has no directed cycles of length at most k, for k {element_of} Z{sup +}. Thomasse conjectured that the number of induced 3-vertex directed paths in a simple 2-free digraph on n vertices is at most (n-1)n(n+1)/15. We present an unpublished result of Bondy proving there are at most 2n{sup 3}/25 such paths, and prove that for the class of circular interval digraphs, an upper bound of n{sup 3}/16 holds. We also study the problem of bounding the number of (non-induced) 4-vertex paths in 3-free digraphs. We show an upper bound of 4n{sup 4}/75 using Bondy's result for Thomasse's conjecture.
Path Integral for Quantum Operations
Vasily E. Tarasov
2007-06-14
In this paper we consider a phase space path integral for general time-dependent quantum operations, not necessarily unitary. We obtain the path integral for a completely positive quantum operation satisfied Lindblad equation (quantum Markovian master equation). We consider the path integral for quantum operation with a simple infinitesimal generator.
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find whatGasEnergyfeature photoTheory05 Target 1 Flight Path 05
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The Social Complexity of Renewable Energy Production in the Countryside
Kunze, Conrad; Busch, Henner
2011-01-01
Renewable energy production is a possible development path for the countryside in the present and future.
Apr 29, 2004 ... Diabetes is a disease of glucose regulation that is associated with the production, secretion and sensitivity to pancreatic insulin. The article is a ...
221A Lecture Notes Path Integral
Murayama, Hitoshi
221A Lecture Notes Path Integral 1 Feynman's Path Integral Formulation Feynman's formulation to reach a position xf at time tf , you integrate over all possible paths connecting the points with a weight factor given by the classical action for each path. Hence the name path integral. This is it. Note
Hydrogen Education Curriculum Path at Michigan Technological...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Curriculum Path at Michigan Technological University Hydrogen Education Curriculum Path at Michigan Technological University 2009 DOE Hydrogen Program and Vehicle Technologies...
COMPUTER SCIENCE: MISCONCEPTIONS, CAREER PATHS
Hristidis, Vagelis
COMPUTER SCIENCE: MISCONCEPTIONS, CAREER PATHS AND RESEARCH CHALLENGES School of Computing Undergraduate Student) #12;Computer Science Misconceptions Intro to Computer Science - Florida International University 2 Some preconceived ideas & stereotypes about Computer Science (CS) are quite common
Collaborative Authoring of Walden's Paths
Li, Yuanling
2012-10-19
The World Wide Web contains rich collections of digital materials that can be used in education and learning settings. The collaborative authoring prototype of Walden's Paths targets two groups of users: educators and ...
Shortest Path Algorithm What is the Shortest Path Problem?
Razak, Saquib
.getNumberOfVertices(); Entry table[] = new Entry[n]; for(int v = 0; v new Entry(); table;What is the shortest path problem? Â· In an edge-weighted graph, the weight of an edge measures the cost represent: distance, cost or time. Â· Such a graph could be used to answer any of the following: Â What
Solar Thermochemical Hydrogen Production Research (STCH): Thermochemic...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
the production of hydrogen and identifies the critical path challenges to the commercial potential of each cycle. Solar Thermochemical Hydrogen Production Research (STCH):...
Ash, John Patrick
2015-01-01
to Computationally Efficient Method . . . . . Minimizing theTracks: Optimal vs an Efficient B´ ezier Curve Path MASTERproposes a computationally efficient path planning algorithm
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
1-800-66-NERSC, option 3 or 510-486-8611 Home For Users Software Compilers PathScale PathScale Compilers (Fortran, C, C++) Availability The Pathscale...
1 Executive Summary EXECUTIVE SUMMARY
than the expected growth in worldwide oil production, volatility in world oil prices could result to develop indigenous oil resources. Currently, total world oil production is 66 million barrels a day share of world production. NonOPEC oil production is currently increasing at a faster rate (70 percent
Neutrino Mean Free Path in Neutron Star
P. T. P. Hutauruk
2010-07-22
Have been calculated the differential cross section and mean free path of neutrino of neutrino interaction in dense matter.
Improved Geothermometry Through Multivariate Reaction Path Modeling...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Improved Geothermometry Through Multivariate Reaction Path Modeling and Evaluation of Geomicrobiological Influences on Geochemical Temperature Indicators Improved Geothermometry...
Path to High Efficiency Gasoline Engine | Department of Energy
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Path to High Efficiency Gasoline Engine Path to High Efficiency Gasoline Engine Path to High Efficiency Gasoline Engine deer10johansson.pdf More Documents & Publications Partially...
Broader source: Energy.gov [DOE]
Algae production R&D focuses on exploring resource use and availability, algal biomass development and improvements, characterizing algal biomass components, and the ecology and engineering of cultivation systems.
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find whatGasEnergyfeature photoTheory05 Target 1 Flight Path90L
Path Profile Guided Partial Dead Code Elimination Using Predication \\Lambda
Gupta, Rajiv
executed paths by reducÂ ing their critical path lengths. The paper presents a costÂbenefit data flow architectures since critical path lengths along frequently executed paths can be reduced through PDE [11, 6, 13 optimization moves inÂ structions that are dead along critical paths off the critical paths [19, 22]. Modern
Critical function and success path summary display
Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)
1995-01-01
The content of and hierarchical access to three levels of display pages containing information on critical function monitoring and success path monitoring.
Personalized PageRank Solution Paths
2015-04-13
gorithms to estimate the solution path as a function of the sparsity and propose .... see shortly, we actually are describing degree normalized. PageRank values.
Robust constrained shortest path problems under budgeted ...
2014-09-12
The shortest path problem with capacity constraint is denoted by CSP. Differently from the capacity constraint, time windows must be satisfied at each node ...
Methodology for Augmenting Existing Paths with Additional Parallel Transects
Wilson, John E.
2013-09-30
Visual Sample Plan (VSP) is sample planning software that is used, among other purposes, to plan transect sampling paths to detect areas that were potentially used for munition training. This module was developed for application on a large site where existing roads and trails were to be used as primary sampling paths. Gap areas between these primary paths needed to found and covered with parallel transect paths. These gap areas represent areas on the site that are more than a specified distance from a primary path. These added parallel paths needed to optionally be connected together into a single path—the shortest path possible. The paths also needed to optionally be attached to existing primary paths, again with the shortest possible path. Finally, the process must be repeatable and predictable so that the same inputs (primary paths, specified distance, and path options) will result in the same set of new paths every time. This methodology was developed to meet those specifications.
Notes on Feynman path integral-like methods of quantization on Riemannian manifolds
Yoshihisa Miyanishi
2015-12-20
We propose an alternative method for Feynman path integrals on compact Riemannian manifolds. Our method employs action integrals along the shortest paths. In the case of rank 1 locally symmetric Riemannian manifolds, we prove the strong convergence of time slicing products of oscillatory integrals for low energy functions. Moreover, the strong limit includes Dewitt curvature $R/6$, where $R$ denotes the scalar curvature of a Riemannian manifold.
Multi-objective stochastic path planning
Dasgupta, Sumantra
2009-05-15
. Provide an O (V.E+C2) heuristic for generating Pareto optimal shortest paths in presence of multiple objectives where C is the upper bound for path length. The complexity can be further reduced to O (V.E) by using graphical read-out of the Pareto frontier...
PARALLEL EVOLUTIONARY ALGORITHMS FOR UAV PATH PLANNING
PARALLEL EVOLUTIONARY ALGORITHMS FOR UAV PATH PLANNING Dong Jia Post-Doctoral Research Associate vehicles (UAVs). Premature convergence prevents evolutionary-based algorithms from reaching global optimal. To overcome this problem, this paper presents a framework of parallel evolutionary algorithms for UAV path
Chakraborty, Swati
2015-04-27
This research describes an approach to test metastability of flip-flops with help of multiple at-speed capture cycles during delay test. K longest paths per flip-flop test patterns are generated, such that a long path on one clock cycle feeds a long...
Visualization of Ant Pheromone Based Path Following
Sutherland, Benjamin T.
2010-07-14
This thesis develops a simulation and visualization of a path finding algorithm based on ant pheromone paths created in 3D space. The simulation is useful as a demonstration of a heuristic approach to NP-complete problems and as an educational tool...
CALIFORNIA PATH PROGRAM INSTITUTE OF TRANSPORTATION STUDIES
Agogino, Alice M.
CALIFORNIA PATH PROGRAM INSTITUTE OF TRANSPORTATION STUDIES UNIVERFITY OF CALIFORNIA, BERKELEY,in cooperation with the State of California Business, Transportation, and Housing Agency, Department Agogino, Kai Goebel SatnamAlag University of California,Berkeley CaliforniaPATH Research Report UCB
Critical Review of Path Integral Formulation
Takehisa Fujita
2008-01-13
The path integral formulation in quantum mechanics corresponds to the first quantization since it is just to rewrite the quantum mechanical amplitude into many dimensional integrations over discretized coordinates $x_n$. However, the path integral expression cannot be connected to the dynamics of classical mechanics, even though, superficially, there is some similarity between them. Further, the field theory path integral in terms of many dimensional integrations over fields does not correspond to the field quantization. We clarify the essential difference between Feynman's original formulation of path integral in QED and the modern version of the path integral method prevailing in lattice field theory calculations, and show that the former can make a correct second quantization while the latter cannot quantize fields at all and its physical meaning is unknown.
NGNP Program 2013 Status and Path Forward
Hans Gougar
2014-03-01
High temperature gas-cooled reactor (HTGR) technology can play an important role in the energy future of the United States by extending the use of nuclear energy for non-electricity energy production missions, as well as continuing to provide a considerable base load electric power generation capability. Extending nuclear energy into the industrial and transportation sectors through the coproduction of process heat and electricity provides safe, reliable energy for these sectors in an environmentally responsible manner. The modular HTGR provides a substantial improvement in nuclear plant safety for the protection of the public and the environment, and supports collocation of the HTGRhigh temperature gas-cooled reactor with major industrial facilities. Under U.S. Department of Energy direction since 2006, the Next Generation Nuclear Plant Project at Idaho National Laboratory has been working toward commercializing the HTGR technology. However, a recent decision by the Secretary of Energy to reduce the scope of the Next Generation Nuclear Plant Project to a research and development program, considerable realignment has taken place. This report: (1) summarizes the accomplishments of the Next Generation Nuclear Plant Program from FY2011 through FY2013; (2) lays out the path forward necessary to achieve the ultimate objective of commercializing HTGR technology; and (3) discusses ongoing technical, licensing, and evaluation activities under the realigned Next Generation Nuclear Plant program considered important to preserve the significant investment made by the government to-date and to maintain some progress in meeting the objectives of the Energy Policy Act of 2005 (EPAct2005).
Moses, E
2007-06-01
Fusion energy has long been considered a promising, clean, nearly inexhaustible source of energy. Power production by fusion micro-explosions of inertial confinement fusion (ICF) targets has been a long-term research goal since the invention of the first laser in 1960. The National Ignition Facility (NIF) is poised to take the next important step in the journey by beginning experiments researching ICF ignition. Ignition on NIF will be the culmination of over thirty years of ICF research on high-powered laser systems such as the Nova laser at Lawrence Livermore National Laboratory (LLNL) and the OMEGA laser at the University of Rochester, as well as smaller systems around the world. NIF is a 192-beam Nd-glass laser facility at LLNL that is more than 90% complete. The first cluster of 48 beams is operational in the laser bay, the second cluster is now being commissioned, and the beam path to the target chamber is being installed. The Project will be completed in 2009, and ignition experiments will start in 2010. When completed, NIF will produce up to 1.8 MJ of 0.35-{micro}m light in highly shaped pulses required for ignition. It will have beam stability and control to higher precision than any other laser fusion facility. Experiments using one of the beams of NIF have demonstrated that NIF can meet its beam performance goals. The National Ignition Campaign (NIC) has been established to manage the ignition effort on NIF. NIC has all of the research and development required to execute the ignition plan and to develop NIF into a fully operational facility. NIF will explore the ignition space, including direct drive, 2{omega} ignition, and fast ignition, to optimize target efficiency for developing fusion as an energy source. In addition to efficient target performance, fusion energy requires significant advances in high-repetition-rate lasers and fusion reactor technology. The Mercury laser at LLNL is a high-repetition-rate Nd-glass laser for fusion energy driver development. Mercury uses state-of-the-art technology such as ceramic laser slabs and light diode pumping for improved efficiency and thermal management. Progress in NIF, NIC, Mercury, and the path forward for fusion energy will be presented.
Path Integral Representations on the Complex Sphere
Christian Grosche
2007-10-23
In this paper we discuss the path integral representations for the coordinate systems on the complex sphere S3C. The Schroedinger equation, respectively the path integral, separates in exactly 21 orthogonal coordinate systems. We enumerate these coordinate systems and we are able to present the path integral representations explicitly in the majority of the cases. In each solution the expansion into the wave-functions is stated. Also, the kernel and the corresponding Green function can be stated in closed form in terms of the invariant distance on the sphere, respectively on the hyperboloid.
FACT SHEET: The Path Forward on Nuclear Waste Disposal | Department...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
FACT SHEET: The Path Forward on Nuclear Waste Disposal FACT SHEET: The Path Forward on Nuclear Waste Disposal FACT SHEET: The Path Forward on Nuclear Waste Disposal More Documents...
Automatic Beam Path Analysis of Laser Wakefield Particle Acceleration Data
Rubel, Oliver
2010-01-01
A. Hakim, R¨ bel et al. Automatic Beam Path Analysis of399, 1976. R¨ bel et al. Automatic Beam Path Analysis ofAutomatic Beam Path Analysis of Laser Wake?eld Particle
Graphene-based battery electrodes having continuous flow paths...
Office of Scientific and Technical Information (OSTI)
Graphene-based battery electrodes having continuous flow paths Citation Details In-Document Search Title: Graphene-based battery electrodes having continuous flow paths Some...
A CONSTRUCTION OF THE ROUGH PATH ABOVE FRACTIONAL ...
2013-03-05
Appl. 120 (2010) 1444–1472], where the construction of a rough path over B was first introduced. 1. Introduction. Rough paths analysis is a theory introduced by ...
The Path to Transforming Knowledge into Energy Projects: DOE...
Office of Environmental Management (EM)
The Path to Transforming Knowledge into Energy Projects: DOE Tribal Renewable Energy Webinar Series 2015 The Path to Transforming Knowledge into Energy Projects: DOE Tribal...
REGULAR PATHS IN SPARQL: QUERYING THE NCI THESAURUS
Washington at Seattle, University of
REGULAR PATHS IN SPARQL: QUERYING THE NCI THESAURUS University of Washington Structural Informatics path enhancements Examples NCI Thesaurus Widely used Exhibits common OWL representational patterns
Shortest Paths, Network Design and Associated Polyhedra
Magnanti, Thomas L.
We study a specialized version of network design problems that arise in telecommunication, transportation and other industries. The problem, a generalization of the shortest path problem, is defined on an undirected network ...
Steam Path Audits on Industrial Steam Turbines
Mitchell, D. R.
1992-01-01
on Industrial steam Turbines DOUGLAS R. MITCHELL. ENGINEER. ENCOTECH, INC., SCHENECTADY, NEW YORK ABSTRACT The electric utility industry has benefitted from steam path audits on steam turbines for several years. Benefits include the ability to identify... areas of performance degradation during a turbine outage. Repair priorities can then be set in accordance with quantitative results from the steam path audit. As a result of optimized repair decisions, turbine efficiency increases, emissions...
Graphene-based battery electrodes having continuous flow paths
Zhang, Jiguang; Xiao, Jie; Liu, Jun; Xu, Wu; Li, Xiaolin; Wang, Deyu
2014-05-24
Some batteries can exhibit greatly improved performance by utilizing electrodes having randomly arranged graphene nanosheets forming a network of channels defining continuous flow paths through the electrode. The network of channels can provide a diffusion pathway for the liquid electrolyte and/or for reactant gases. Metal-air batteries can benefit from such electrodes. In particular Li-air batteries show extremely high capacities, wherein the network of channels allow oxygen to diffuse through the electrode and mesopores in the electrode can store discharge products.
SIGNAL-PATH LEVEL ASSIGNMENT FOR DUAL-Vt TECHNIQUE
Wang, Yu
be assigned to some of the transistors in the non-critical paths and a lower Vt is assigned to other to get the critical paths and non-critical paths of the circuit much faster and with more accuracy. The gates in the critical paths will remain unchanged to maintain the performance; and the gates in the non-critical
An Efficient Computation of Statistically Critical Sequential Paths Under Retiming
Lim, Sung Kyu
An Efficient Computation of Statistically Critical Sequential Paths Under Retiming Mongkol the statistically critical paths under retiming, which are the paths with a high probability of becoming timing- critical after retiming. SRTA enables the designers to perform circuit optimization on these paths
Commercial Light Water Production of Tritium: Update and Path Forward
Broader source: Energy.gov [DOE]
Presentation from the 32nd Tritium Focus Group Meeting held in Germantown, Maryland on April 23-25, 2013.
ESnet, NERSC Blaze 400G Production Network Path
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find what you wereDisclaimersMail RequestsESnet's Science
The Path to Higher Source, Package, and Product Efficacy
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCEDInstallers/ContractorsPhotovoltaicsState of Pennsylvania U.S.The6, 2015NeedMorgan Pattison,
Metabolic paths in world economy and crude oil price
Picciolo, Francesco; Ruzzenenti, Franco
2015-01-01
In 1983 Hamilton demonstrated the correlation between the price of oil and gross national product for the U.S. economy. A prolific literature followed exploring the potential correlation of oil prices with other important indices like inflation, industrial production, and food prices, using increasingly refined tools. Our work sheds new light on the role of oil prices in shaping the world economy by investigating the metabolic paths of value across trade between 1960 and 2010, by means of Markov Chain analysis. We show that the interdependence of countries' economies are strictly (anti)correlated to the price of oil. We observed a remarkably high correlation of 0.85, unmatched by any former study addressing the correlation between oil price and major economic indicators.
Feynman's path integral and mutually unbiased bases
J Tolar; G Chadzitaskos
2009-08-05
Our previous work on quantum mechanics in Hilbert spaces of finite dimensions N is applied to elucidate the deep meaning of Feynman's path integral pointed out by G. Svetlichny. He speculated that the secret of the Feynman path integral may lie in the property of mutual unbiasedness of temporally proximal bases. We confirm the corresponding property of the short-time propagator by using a specially devised N x N -approximation of quantum mechanics in L^2(R) applied to our finite-dimensional analogue of a free quantum particle.
California at Davis, University of
-path, success if hits t, fail if backup to s last Advance(s); // move forward from s till get stuck at last in Gf . Advance(v) // moves towards t till gets stuck, or hits t cv v; // cv represents the current While (last = s, t) // stuck partway, so backup { v pred(last); relabel(last); // can't move forward
Non-relativistic Bremsstrahlung in QED: Hamiltonian vs. Path Integral Approach
A. Jahan
2013-05-20
An alternative derivation of the radiation intensity in non-relativistic bremsstrahlung is provided utilizing the path integral formalism. By integrating out the gauge field, one obtains the effective action which it's imaginary part is interpreted as the rate of photon production during the collision.
FORMAL LANGUAGE CONSTRAINED PATH PROBLEMS CHRIS BARRETT y , RIKO JACOB z , AND MADHAV MARATHE y
Riko Jacob
. The problem of #12;nding label constrained paths also arises in other application areas such as production by the Department of Energy under Contract W-7405-ENG-36. z Email: rjacob@brics.dk. BRICS, Basic Research of Aarhus, Ny Munkegade, bg 540, DK-8000 #23; Arhus C, Denmark. Work done while staying at Los Alamos
Laser-driven proton scaling laws and new paths towards energy increase
Loss, Daniel
-particle radiography8 , or for the production of high-energy-density matter of interest for astrophysics9 ; they couldARTICLES Laser-driven proton scaling laws and new paths towards energy increase J. FUCHS1,2 *, P, 85748 Garching, Germany 8 Laboratoire d'Optique Appliqu´ee ENSTA, UMR 7639, CNRS, Ecole Polytechnique
Access Paths Multi-dimensional Index Structures
Mannheim, Universität
for result TID-lists) · high cost for intersection if one of the indexes deliverse many results · But') · index.find_key(`ZH1984') · Discussion: · cost equivalent to the cost of a one-dimensional access! KeyAccess Paths Multi-dimensional Index Structures 1Freitag, 4. Juni 2010 #12;September 27, 2007
Clearance Based Path Optimization for Motion Planning
Utrecht, Universiteit
Abstract Many motion planning techniques, like the probabilistic roadmap method (PRM), gen erate low] and humanoid robot planning [13]. A commonly used technique for planning paths is the Probabilistic Roadmap.1 Probabilistic Roadmap Method The probabilistic roadmap method consists of two phases: a construction and a query
The Path to Disaster The Deepwater Horizon
Pym, David J.
was not disconnected · The escaping gas ignited · 11 dead · The drilling rig Deepwater Horizon sank after 2 days #1221/08/2013 1 The Path to Disaster The Deepwater Horizon BP's disaster in the Gulf of Mexico Industrial Psychology Research Centre 14th August, 2013 Transocean Deepwater Horizon #12;21/08/2013 2
Protecting BGP from Invalid Paths Josh Karlin
New Mexico, University of
Protecting BGP from Invalid Paths Josh Karlin University of New Mexico karlinjf@cs.unm.edu Stephanie Forrest University of New Mexico Santa Fe Institute forrest@cs.unm.edu Jennifer Rexford Princeton University jrex@cs.princeton.edu ABSTRACT The Internet's interdomain routing protocol, BGP, is vul- nerable
Clearance Based Path Optimization for Motion Planning
Utrecht, Universiteit
Abstract Many motion planning techniques, like the probabilistic roadmap method (PRM), gen- erate low] and humanoid robot planning [13]. A commonly used technique for planning paths is the Probabilistic Roadmap. 1.1 Probabilistic Roadmap Method The probabilistic roadmap method consists of two phases
Folded-path optical analysis gas cell
Carangelo, R.M.; Wright, D.D.
1995-08-08
A folded-path gas cell employs an elliptical concave mirror in confronting relationship to two substantially spherical concave mirrors. At least one of the spherical mirrors, and usually both, are formed with an added cylindrical component to increase orthogonal foci coincidence and thereby to increase the radiation energy throughput characteristic of the cell. 10 figs.
Folded-path optical analysis gas cell
Carangelo, Robert M. (Glastonbury, CT); Wright, David D. (Vershire, VT)
1995-01-01
A folded-path gas cell employs an elliptical concave mirror in confronting relationship to two substantially spherical concave mirrors. At least one of the spherical mirrors, and usually both, are formed with an added cylindrical component to increase orthogonal focii coincidence and thereby to increase the radiation energy throughput characteristic of the cell.
The Social Complexity of Renewable Energy Production in the Countryside
Kunze, Conrad; Busch, Henner
2011-01-01
Renewable energy production is a possible development path for the countryside in the present and future.of energy in the near future from local, renewable sources.
California at Davis, University of
-path, success if hits t, fail if backup to s last Advance(s); // move forward from s till get stuck at last of u in Gf . Advance(v) //moves towards t till gets stuck, or hits t cv v; // cv records the current While (last = s, t) // stuck partway, so backup { v pred(last); relabel(last); // can't move forward
Experimental and numerical investigation of phonon mean free path distribution
Zeng, Lingping
2013-01-01
Knowledge of phonon mean free path (MFP) distribution is critically important to engineering size effects. Phenomenological models of phonon relaxation times can give us some sense about the mean free path distribution, ...
Working with Utilities: Effective Paths for Tribal Governments...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Working with Utilities: Effective Paths for Tribal Governments Webinar Working with Utilities: Effective Paths for Tribal Governments Webinar September 30, 2015 11:00AM to 12:30PM...
A Surprising Path for Proton Transfer Without Hydrogen Bonds
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
A Surprising Path for Proton Transfer Without Hydrogen Bonds A Surprising Path for Proton Transfer Without Hydrogen Bonds Print Wednesday, 25 July 2012 00:00 Hydrogen bonds are...
A Potential Path to Emissions-Free Fossil Energy | Department...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
A Potential Path to Emissions-Free Fossil Energy A Potential Path to Emissions-Free Fossil Energy August 20, 2013 - 10:00am Addthis The National Energy Technology Laboratory's...
Surface-adaptive and Collision-avoiding Path Planning
Morik, Katharina
that a desired workpiece is generated by remov- ing material form the stock. The tool is moved by a milling machine which is computer-controlled. The task of automatic path planning is to find a suitable path
The Path a Proton Takes Through a Fuel Cell Membrane
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
The Path a Proton Takes Through a Fuel Cell Membrane The Path a Proton Takes Through a Fuel Cell Membrane October 11, 2012 Linda Vu, lvu@lbl.gov, +1 510 495 2402 Ram.jpg The cover...
MOF Coating a Promising Path to White LEDs
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
MOF Coating a Promising Path to White LEDs MOF Coating a Promising Path to White LEDs Print Friday, 27 February 2015 17:11 Hu et al. designed a new yellow phosphor with high...
FESAC Development Path Meeting Draft Agenda
Facility (ST, Tokamak, GDT) - M. Peng 10:50 - 11:10 Discussion 11:10 - 11:45 3) First dry wall for IFE for Demo? MFE timing issues (licensing of CTF) Interaction with IFE ETF to Demo transition? (licensing in the IFE path - Wayne Meier HIF liquid walls Z pinches Dry walls 2:30 - 2:50 Discussion 2:50 - 3:00 Break 3
Saving the Coherent State Path Integral
Yariv Yanay; Erich J. Mueller
2013-03-19
By returning to the underlying discrete time formalism, we relate spurious results in coherent state path integral calculations to the high frequency structure of their propagators. We show how to modify the standard expressions for thermodynamic quantities to yield correct results. These expressions are relevant to a broad range of physical problems, from the thermodynamics of Bose lattice gases to the dynamics of spin systems.
Free Energy Changes, Fluctuations, and Path Probabilities
William G. Hoover; Carol G. Hoover
2011-04-20
We illustrate some of the static and dynamic relations discovered by Cohen, Crooks, Evans, Jarzynski, Kirkwood, Morriss, Searles, and Zwanzig. These relations link nonequilibrium processes to equilibrium isothermal free energy changes and to dynamical path probabilities. We include ideas suggested by Dellago, Geissler, Oberhofer, and Schoell-Paschinger. Our treatment is intended to be pedagogical, for use in an updated version of our book: Time Reversibility, Computer Simulation, and Chaos. Comments are very welcome.
The lattice path operad Clemens Berger (Nice)
Berger, Clemens
-operads. Let (X, ) be a based topological space and (Sn, ) be the n-sphere. Then nX = Top(Sn, X) is an algebra operad O in E. Let EOu. Then HomOu(, X) is a CoendO()-algebra. 6 #12;E = Top or E = Ch(Z) contains SetsThe lattice path operad Clemens Berger (Nice) Third Arolla Conference on Algebraic Topology August
"Multi-machine" Strategy: The Other Path of the FESAC
"Multi-machine" Strategy: The Other Path of the FESAC Burning Plasma Strategy Gerald Navratil Difference ITER Development Path FIRE Development Path `Single Machine Strategy' `Multi-machine Strategy Machine Strategy' `Multi-machine Strategy' `One Step to DEMO' Modular Strategy `Penultimate Step to DEMO
United States Department of Critical Path Method AppliedAgriculture
Forest and Range Experiment Station PO. Box 245, Berkeley, California 94701 August 1986 #12;Critical Path interrelated activities. One approach that has been widely used is the critical path method, in which a network of thousands of activities, such as major construction and engineering projects. In the 1950's, a critical path
Modeling the Global Critical Path in Concurrent Systems
Modeling the Global Critical Path in Concurrent Systems Girish Venkataramani Tiberiu Chelcea Mihai Molecular Electronics, under contract number CCR0205523. #12;Keywords: Performance modeling, critical path analysis, high-level synthesis #12;Abstract We show how the global critical path can be used as a practical
Computing Along the Critical Path Dean M. Tullsen Brad Calder
Sair, Suleyman
Computing Along the Critical Path Dean M. Tullsen Brad Calder Department of Computer Science dependencies that constrain execution speed constitute the critical path of execution. To optimize the performance of the processor, we either have to reduce the critical path or execute it more efficiently
Capturing Post-Silicon Variations using a Representative Critical Path
Sapatnekar, Sachin
1 Capturing Post-Silicon Variations using a Representative Critical Path Qunzeng Liu and Sachin S on measurements on a replica of the nominal critical path, whose variations are intended to reflect those of the entire circuit after manufacturing. For realistic circuits, where the number of critical paths can
Multipath channels Path timing critical (versus amplitude information)
Southern California, University of
1 · Multipath channels · Path timing critical (versus amplitude information) Certain modulations: PPM Location/Ranging · Model Delay spread L paths (M choose L possible profiles) Independent path amplitudes Block constant channel AW GN 0 100 200 300 400 500 600 -0.02 0 0.02 The Channel
Reconstructing Critical Paths from Execution Traces Martijn Hendriks
Vaandrager, Frits
Reconstructing Critical Paths from Execution Traces Martijn Hendriks Embedded Systems Institute of constructing critical paths from incomplete information. In general, a directed acyclic graph of tasks with their execution times (i.e., a task graph) is necessary to extract critical paths. We assume, however, that only
Accurate Critical Path Analysis via Random Trace Construction
Zilles, Craig
Accurate Critical Path Analysis via Random Trace Construction Pierre Salverda Charles Tucker Craig to their profiled behavior. We demonstrate our technique in the context of critical path analysis, showing it can achieve the same accuracy as a hardware critical path predictor, but with lower hardware requirements. Key
Robot Path Planning in Uncertain Environments: A Language-Measure-
Ray, Asok
Robot Path Planning in Uncertain Environments: A Language-Measure- Theoretic Approach Devesh K. Jha the problem of goal-directed robot path planning in the presence of uncertainties that are induced by bounded, probabilistic finite state automata 1 Motivation and Introduction In general, path planning of robots (e
Automatic Construction of High Quality Roadmaps for Path Planning
Utrecht, Universiteit
Automatic Construction of High Quality Roadmaps for Path Planning D.Nieuwenhuisen A.Kamphuis M-CS-2004-068 www.cs.uu.nl #12;Automatic Construction of High Quality Roadmaps for Path Planning D on a technique from robotics, that computes a roadmap of smooth, collision-free, high-quality paths. This roadmap
UNIVERSITY OF CALIFORNIA, SAN DIEGO Critical-Path Aware Processor Architectures
Sair, Suleyman
UNIVERSITY OF CALIFORNIA, SAN DIEGO Critical-Path Aware Processor Architectures A dissertation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 C. Multithreading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 III Critical Path Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 A. General Critical-Path Analysis
Quantum Mechanical Single Molecule Partition Function from Path Integral Monte Carlo Simulations
Chempath, Shaji; Bell, Alexis T.; Predescu, Cristian
2008-01-01
calculated from path integral Monte Carlo(PIMC) and harmoniccalculated from path integral Monte Carlo (PIMC) andFunction from Path Integral Monte Carlo Simulations Shaji
A path integral approach to data assimilation in stochastic nonlinear systems
Quinn, John C.
2010-01-01
Values as Path Integrals . . . . . . . . . . .2.3Carlo Evaluation of Path Integrals . . . . . . . . . . . 3.1Sampling . . . . . . . . . . 3.2 Path Integral Monte Carlo
Chang, JC; Savage, VM; Chou, T
2014-01-01
CC, Buice MA (2010) Path integral methods for stochastic di?2012) Quantum mechanics and path integrals: Emended edition.15. Graham R (1977) Path integral formulation of general di?
China Energy and Emissions Paths to 2030
Fridley, David
2012-01-01
Final Energy Use (Mtce) Oil Products Solid Fuels 2010-30Electricity Heat Natural Gas Oil Products Solid Fuels UnlikeHeat Natural Gas Oil Products Coke Solid Fuels Efficiency
Improved initial guess for minimum energy path calculations
Smidstrup, Søren; Pedersen, Andreas; Stokbro, Kurt
2014-06-07
A method is presented for generating a good initial guess of a transition path between given initial and final states of a system without evaluation of the energy. An objective function surface is constructed using an interpolation of pairwise distances at each discretization point along the path and the nudged elastic band method then used to find an optimal path on this image dependent pair potential (IDPP) surface. This provides an initial path for the more computationally intensive calculations of a minimum energy path on an energy surface obtained, for example, by ab initio or density functional theory. The optimal path on the IDPP surface is significantly closer to a minimum energy path than a linear interpolation of the Cartesian coordinates and, therefore, reduces the number of iterations needed to reach convergence and averts divergence in the electronic structure calculations when atoms are brought too close to each other in the initial path. The method is illustrated with three examples: (1) rotation of a methyl group in an ethane molecule, (2) an exchange of atoms in an island on a crystal surface, and (3) an exchange of two Si-atoms in amorphous silicon. In all three cases, the computational effort in finding the minimum energy path with DFT was reduced by a factor ranging from 50% to an order of magnitude by using an IDPP path as the initial path. The time required for parallel computations was reduced even more because of load imbalance when linear interpolation of Cartesian coordinates was used.
Two formation paths for cluster dwarf galaxies?
Bianca M. Poggianti; Nobunari Kashikawa; Terry Bridges; Bahram Mobasher; Yutaka Komiyama; Dave Carter; Sadanori Okamura; Masafumi Yagi
2003-10-15
A surprising result of our recent spectroscopic survey of galaxies in the Coma cluster has been the discovery of a possible bimodal distribution in the metallicities of faint galaxies at $M_B>-17$. We identified a group of dwarfs with luminosity-weighted metallicities around solar and a group with [M/H] around -1.5. A metallicity bimodality among galaxies of similar luminosities is unexpected and suggests that faint cluster galaxies could be an heterogeneous population that formed through more than one evolutionary path, possibly as a consequence of the cluster environment.
Path integral quantization of generalized quantum electrodynamics
Bufalo, R.; Pimentel, B. M.; Zambrano, G. E. R.
2011-02-15
In this paper, a complete covariant quantization of generalized electrodynamics is shown through the path integral approach. To this goal, we first studied the Hamiltonian structure of the system following Dirac's methodology and, then, we followed the Faddeev-Senjanovic procedure to obtain the transition amplitude. The complete propagators (Schwinger-Dyson-Fradkin equations) of the correct gauge fixation and the generalized Ward-Fradkin-Takahashi identities are also obtained. Afterwards, an explicit calculation of one-loop approximations of all Green's functions and a discussion about the obtained results are presented.
ClearPath | 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 QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company) Jump to:New York:ClayBurnVitaCleanstarClearPath Jump to:
EnerPath | 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 QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto Electric Coop, Inc JumpElko, Nevada:Geothermal7)EnerPath Jump to:
The Flight Paths for Biojet Fuel
Gasoline and Diesel Fuel Update (EIA)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979 1.988Prices,Flight Paths for Biojet Fuel Tony Radich
Path Planning Algorithm for Extinguishing Forest Fires
Kumar, M P Sivaram
2012-01-01
One of the major impacts of climatic changes is due to destroying of forest. Destroying of forest takes place in many ways but the majority of the forest is destroyed due to wild forest fires. In this paper we have presented a path planning algorithm for extinguishing fires which uses Wireless Sensor and Actor Networks (WSANs) for detecting fires. Since most of the works on forest fires are based on Wireless Sensor Networks (WSNs) and a collection of work has been done on coverage, message transmission, deployment of nodes, battery power depletion of sensor nodes in WSNs we focused our work in path planning approach of the Actor to move to the target area where the fire has occurred and extinguish it. An incremental approach is presented in order to determine the successive moves of the Actor to extinguish fire in an environment with and without obstacles. This is done by comparing the moves determined with target location readings obtained using sensors until the Actor reaches the target area to extinguish f...
A global perspective on energy markets and economic integration.
Baker, Arnold Barry
2006-04-01
What will be the effect of Iraqi domestic instability on Iraqi oil production Negotiations for Iranian nuclear technology on Iranian oil supplies Saudi commitment to expanded oil production President Putin's policies on Russian oil and natural gas supplies President Chavez's policies on Venezuelan oil supplies Instability in Nigeria Higher oil prices on world economic growth Effect of economic growth on oil demand in China, India, U.S., etc. Higher oil prices on non-OPEC oil supplies
Businesses Mobilize Production through Markets: Parametric Modeling of
White, Douglas R.
Businesses Mobilize Production through Markets: Parametric Modeling of Path-dependent Outcomes; Revised September 3, 2002; Accepted September 3, 2002 Business is modeled as interlocking social constructions that emerge in mobilizing differentiated production flows amidst uncertainty. The model
Towards a realistic parsing of the Feynman path integral
K. B. Wharton
2015-11-29
The Feynman path integral does not allow a "one real path" interpretation, because amplitudes contribute to probabilities in a non-separable manner. The opposite extreme, "all paths happen", is not a useful or informative account. In this paper it is shown that an intermediate parsing of the path integral, into realistic non-interfering possibilities, is always available. Each realistic possibility formally corresponds to numerous particle paths, but is arguably best interpreted as a spacetime-valued field. Notably, one actual field history can always be said to occur, although it will generally not have an extremized action. The most obvious concerns with this approach are addressed, indicating necessary follow-up research. But without obvious showstoppers, it seems plausible that the path integral might be reinterpreted to explain quantum phenomena in terms of Lorentz covariant field histories.
Path Integral and Effective Hamiltonian in Loop Quantum Cosmology
Haiyun Huang; Yongge Ma; Li Qin
2011-06-27
We study the path integral formulation of Friedmann universe filled with a massless scalar field in loop quantum cosmology. All the isotropic models of $k=0,+1,-1$ are considered. To construct the path integrals in the timeless framework, a multiple group-averaging approach is proposed. Meanwhile, since the transition amplitude in the deparameterized framework can be expressed in terms of group-averaging, the path integrals can be formulated for both deparameterized and timeless frameworks. Their relation is clarified. It turns out that the effective Hamiltonian derived from the path integral in deparameterized framework is equivalent to the effective Hamiltonian constraint derived from the path integral in timeless framework, since they lead to same equations of motion. Moreover, the effective Hamiltonian constraints of above models derived in canonical theory are confirmed by the path integral formulation.
Navigating Roadblocks on the Path to Advanced Biofuels Deployment
Broader source: Energy.gov [DOE]
Breakout Session 2: Frontiers and Horizons Session 2–C: Navigating Roadblocks on the Path to Advanced Biofuels Deployment Andrew Held, Senior Director of Feedstock Development, Virent, Inc.
Reduction of Emission Variance by Intelligent Air Path Control
Broader source: Energy.gov [DOE]
This poster describes an air path control concept, which minimizes NOx and PM emission variance while having the ability to run reliably with many different sensor configurations.
ORNL thermomagnetic processing method provides path to new materials...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
thermomagnetic processing method provides path to new materials The high magnetic field environments are provided by fully recondensing commercial prototype superconducting magnet...
DOE EM Landfill Workshop and Path Forward - July 2009
Office of Environmental Management (EM)
Teleconference: 2. DOE EM Landfill Workshop & Path Forward Office of Groundwater and Soil Remediation US Department of Energy July 2009 Slides prepared by CRESP DOE EM Landfill...
Office of River Protection's (ORP) Path to Reinvigorating Technology...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Development Presentation from the 2015 DOE National Cleanup Workshop by Kevin Smith, Manager, Office of River Protection. ORP's Path to Reinvigorating Technology...
Community-Based Forest (Natural) Resource Management: A Path...
Community-Based Forest (Natural) Resource Management: A Path to Sustainable Environment and Development Jump to: navigation, search Name Community-Based Forest (Natural) Resource...
Minimal paths between communities induced by geographical networks
de Arruda, Henrique Ferraz; Costa, Luciano da Fontoura
2015-01-01
In this work we investigate the betweenness centrality in geographical networks and its relationship with network communities. We show that nodes with large betweenness define what we call characteristic betweenness paths in both modeled and real-world geographical networks. We define a geographical network model that possess a simple topology while still being able to present such betweenness paths. Using this model, we show that such paths represent pathways between entry and exit points of highly connected regions, or communities, of geographical networks. By defining a new network, containing information about community adjacencies in the original network, we describe a means to characterize the mesoscale connectivity provided by such characteristic betweenness paths.
Identification of MHF Fracture Planes and Flow Paths- a Correlation...
creation of flow paths through the rock between two wellbores. To date, circulation systems have only been created by drilling one wellbore, hydraulically fracturing the well...
A Development Path for the Stabilized Spheromak
Fowler, T K
2007-07-13
In Refs. [1] - [3], I suggest a concerted computational effort to study profile control of spheromaks, in anticipation that it is timely to incorporate the q < 1 regime of RFP's and spheromaks into an integrated advanced toroidal confinement program, together with improvements in tokamaks and stellarators now being pursued. For profile control of spheromaks by neutral beam injection, with care to avoid super-Alfvenic beam instability the main issue is excitation of tearing modes that can be studied using the NIMROD code already calibrated to MST and SSPX. In this note, I show that profile control on spheromaks could be demonstrated in a device the size of SSPX, leading ultimately to a very compact ignition facility, and possibly modular fusion reactors with a shorter development path.
Hot gas path component cooling system
Lacy, Benjamin Paul; Bunker, Ronald Scott; Itzel, Gary Michael
2014-02-18
A cooling system for a hot gas path component is disclosed. The cooling system may include a component layer and a cover layer. The component layer may include a first inner surface and a second outer surface. The second outer surface may define a plurality of channels. The component layer may further define a plurality of passages extending generally between the first inner surface and the second outer surface. Each of the plurality of channels may be fluidly connected to at least one of the plurality of passages. The cover layer may be situated adjacent the second outer surface of the component layer. The plurality of passages may be configured to flow a cooling medium to the plurality of channels and provide impingement cooling to the cover layer. The plurality of channels may be configured to flow cooling medium therethrough, cooling the cover layer.
Fulton, J.C.
1994-10-01
Volume I of the Hanford Spent Nuclear Fuel Project - Recommended Path Forward constitutes an aggressive series of projects to construct and operate systems and facilities to safely retrieve, package, transport, process, and store K Basins fuel and sludge. Volume II provided a comparative evaluation of four Alternatives for the Path Forward and an evaluation for the Recommended Path Forward. Although Volume II contained extensive appendices, six supporting documents have been compiled in Volume III to provide additional background for Volume II.
China Energy and Emissions Paths to 2030
Fridley, David
2012-01-01
production, thereby saving energy and reducing emissions andCement: Benchmarking and Energy Savings Tool for the Cementinto account the costs and energy savings of different
NC machine tool path generation from CSG part
Bobrow, James E.
NC machine tool path generation from CSG part representations James E Bobrow Recent improvements for machine tool path generation. Current machining algorithms require that any port geometric information modelling system is used. Thispaper presents o method for generating numerically-controlled milling machine
Disjoint BoundaryBoundary Paths in Critical Circular Planar Networks
Morrow, James A.
Disjoint BoundaryÂBoundary Paths in Critical Circular Planar Networks Ryan Sturgell December 8 that in a critical circular planar network every interior vertex has three disjoint paths to the boundary. 1, 1998 Abstract This paper explores some properties of critical circular planar netÂ works. The main
L1 Regularization Path Algorithm for Generalized Linear Models
Hastie, Trevor
of the paths; we suggest intuitive and flexible strategies for choosing appropriate values. We demonstrate: ^() = argmin {- log L(y; ) + 1}, (2) where > 0 is the regularization parameter. Logistic regression with L1 the most complex stage possible. By generating the regularization path rather than computing solutions
Path Planning for Permutation-Invariant Multi-Robot Formations
Hutchinson, Seth
Path Planning for Permutation-Invariant Multi-Robot Formations Stephen Kloder Seth Hutchinson, IL 61801 Email: {kloder, seth}@uiuc.edu Abstract-- In this paper we demonstrate path planning for our-assign roles for each individual robot, rely on local planning and behaviors to build emergent behaviors
Efficient Path Delay Test Generation with Boolean Satisfiability
Bian, Kun
2013-12-10
This dissertation focuses on improving the accuracy and efficiency of path delay test generation using a Boolean satisfiability (SAT) solver. As part of this research, one of the most commonly used SAT solvers, MiniSat, was integrated into the path...
Cost effective path to DEMO University of Washington
1 Cost effective path to DEMO By Tom Jarboe University of Washington To Fusion Power Associates December 14, 2011 #12;2 Outline · Maximizing the development-cost benefit from ITER knowledge · Getting on cost effective path · Requirements of smaller scale experiment · Cost problems are helped
Efficient Static Analysis with Path Pruning using Coverage Data
Jalote, Pankaj
Efficient Static Analysis with Path Pruning using Coverage Data Vipindeep V, Pankaj Jalote,jalote}@cse.iitk.ac.in ABSTRACT Soundness and completeness are two primary concerns of a static analysis tool for finding defects in software. Exhaus- tive static analysis of the program through all paths is not always possible, especially
Finding Chemical Reaction Paths with a Multilevel Preconditioning Seyit Kale,,
Dinner, Aaron
Finding Chemical Reaction Paths with a Multilevel Preconditioning Protocol Seyit Kale,, Olaseni for chemical reactions can be computationally costly owing to the level of quantum- chemical theory needed for the reaction path iteratively. These methods have yielded important insights in quantum chemical contexts9
Mechanism of Ligand Exchange Studied Using Transition Path Sampling
Harris, Charles B.
Mechanism of Ligand Exchange Studied Using Transition Path Sampling Preston T. Snee, Jennifer@socrates.berkeley.edu Abstract: The mechanism of intermolecular ligand exchange has been studied using transition path sampling that there are multiple steps in the reaction mechanism. The first involves partial dissociation of the coordinated
The Reaction Path in Chemistry: Current Approaches and Perspectives
Quapp, Wolfgang
, Germany UNDERSTANDING CHEMICAL REACTIVITY 16 August 1995 Hardbound 308 pp. ISBN 0-7923-3589-9 The reaction and usage of the reaction path concept; D. Heidrich. From reaction path to reaction mechanism: Fundamental. Second-order methods for the optimization of molecular potential energy surfaces; T. Helgaker et al
Minimizing communication in all-pairs shortest paths Edgar Solomonik
California at Berkeley, University of
Minimizing communication in all-pairs shortest paths Edgar Solomonik Aydin Buluc James Demmel;Copyright © 2013, by the author(s). All rights reserved. Permission to make digital or hard copies of all, requires prior specific permission. #12;Minimizing communication in all-pairs shortest paths Edgar
Pedestrian Path Prediction with Recursive Bayesian Filters: A Comparative Study
Gavrila, Dariu M.
Pedestrian Path Prediction with Recursive Bayesian Filters: A Comparative Study N. Schneider1 a com- parative study on recursive Bayesian filters for pedestrian path pre- diction at short time/acceleration/turn). These are applied to four typical pedestrian mo- tion types (crossing, stopping, bending in, starting). Position
Pierre.Francois@UCLouvain.be BGP Path visibility
Bonaventure, Olivier
BGP NHs · Hitless planned maintenance · "Optimal" hot-potato routing · (Churn reduction / convergence the IGP tie-break to clients · Depending on which paths it advertises #12;Churn reduction ??? · Churn reduction for primary paths... · ...with internal churn increase for non-primary ones #12;Churn Reduction
Path to Market for Compact Modular Fusion Power Cores
Precedents? Small number of private fusion companies starting up, filing patents and finding editions Lead author Grounded in DOE program #12;12/13/11 5 Path to market 'next step' Springer Energy Brief: 'Path to Market for Compact Modular Fusion Power' Soliciting wider input from energy, business
Dual Path Instruction Processing Juan L. Aragn1
Acacio, Manuel
,joseg}@ditec.um.es 2 Dept. d'Arquitectura de Comp. Universitat Politècnica de Catalunya 08034 Barcelona (Spain) antonio@ac, and renames, but does not execute, instructions from the alternative path for low confidence predicted branches at the same time as the predicted path is being executed. All the stages of the pipeline front
SPECIAL ISSUE PAPER Efficient camera path planning algorithm for human
Chen, Sheng-Wei
, and a near-optimal path can be obtained. In addition, some COMPUTER ANIMATION AND VIRTUAL WORLDS Comp. AnimSPECIAL ISSUE PAPER Efficient camera path planning algorithm for human motion overview I-Cheng Yeh1 research topic, benefiting many animation applications. Existing optimal-based approaches are generally
Improved Hardness of Approximation for Stackelberg Shortest-Path Pricing
Verbrugge, Clark
the Stackelberg shortest-path pricing problem, which is defined as follows. Given a graph G with fixed-cost on the predefined fixed costs and our prices, a customer purchases a cheapest s-t-path in G and we receive payment costs, we may assign prices to a subset of the items. Given both fixed costs and prices, a single
nuSTORM and A Path to a Muon Collider
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Adey, David; Bayes, Ryan; Bross, Alan; Snopok, Pavel
2015-05-20
Our article reviews the current status of the nuSTORM facility and shows how it can be utilized to perform the next step on the path toward the realization of a ?+?- collider. This review includes the physics motivation behind nuSTORM, a detailed description of the facility and the neutrino beams it can produce, and a summary of the short-baseline neutrino oscillation physics program that can be carried out at the facility. The idea for nuSTORM (the production of neutrino beams from the decay of muons in a racetrack-like decay ring) was discussed in the literature more than 30 years agomore »in the context of searching for noninteracting (sterile) neutrinos. However, only in the past 5 years has the concept been fully developed, motivated in large part by the facility's unmatched reach in addressing the evolving data on oscillations involving sterile neutrinos. Finally, this article reviews the basics of the ?+?-collider concept and describes how nuSTORM provides a platform to test advanced concepts for six-dimensional muon ionization cooling.« less
LaValle, Steven M.
Formation Path Planning and Control on Graphs Jingjin Yu Steven M. LaValle Abstract-- For the task of moving formation, it was shown that distance optimal paths can be computed to complete with a tight convergence formation. The ordering leads to a simple distributed scheduling algorithm that assures the same convergence
Water Evaporation: A Transition Path Sampling Study
Patrick Varilly; David Chandler
2012-12-12
We use transition path sampling to study evaporation in the SPC/E model of liquid water. Based on thousands of evaporation trajectories, we characterize the members of the transition state ensemble (TSE), which exhibit a liquid-vapor interface with predominantly negative mean curvature at the site of evaporation. We also find that after evaporation is complete, the distributions of translational and angular momenta of the evaporated water are Maxwellian with a temperature equal to that of the liquid. To characterize the evaporation trajectories in their entirety, we find that it suffices to project them onto just two coordinates: the distance of the evaporating molecule to the instantaneous liquid-vapor interface, and the velocity of the water along the average interface normal. In this projected space, we find that the TSE is well-captured by a simple model of ballistic escape from a deep potential well, with no additional barrier to evaporation beyond the cohesive strength of the liquid. Equivalently, they are consistent with a near-unity probability for a water molecule impinging upon a liquid droplet to condense. These results agree with previous simulations and with some, but not all, recent experiments.
An Electromechanical Which-Path Interferometer
A. D. Armour; M. P. Blencowe
2001-08-28
We investigate the possibility of an electromechanical which-path interferometer, in which electrons travelling through an Aharonov-Bohm ring incorporating a quantum dot in one of the arms are dephased by an interaction with the fundamental flexural mode of a radio frequency cantilever. The cantilever is positioned so that its tip lies just above the dot and a bias is applied so that an electric field exists between the dot and the tip. This electric field is modified when an additional electron hops onto the dot, coupling the flexural mode of the cantilever and the microscopic electronic degrees of freedom. We analyze the transmission properties of this system and the dependence of interference fringe visibility on the cantilever-dot coupling and on the mechanical properties of the cantilever. The fringes are progressively destroyed as the interaction with the cantilever is turned up, in part due to dephasing arising from the entanglement of the electron and cantilever states and also due to the thermal smearing that results from fluctuations in the state of the cantilever. When the dwell time of the electron on the dot is comparable to or longer than the cantilever period, we find coherent features in the transmission amplitude. These features are washed out when the cantilever is decohered by its coupling to the environment.
A New Weighted Shortest Path Tree for Convergecast Traffic Routing in WSN
Boyer, Edmond
, existing SPT approaches aim to construct a tree rooted at the sink such that the cost of the path from any to the basic one. Index Terms--Wireless Sensor Networks (WSN), Shortest Path Tree (SPT), weighted path cost such that the path cost from any node to the sink is minimal. In existing construction algorithms, the cost of a path
Routing Bandwidth Guaranteed Paths with Local Restoration in Label Switched Networks
Li, Li Erran
information. We first show that joint optimization of primary and backup paths is NP-hard in all cases. We along the primary path, the source node detects path failure and activates the backup path or nodes along primary path fail. In this paper, we address the problem of distributed routing
A method for finding the statically sensitized critical path in VLSI circuits
Sen, Anindita
1995-01-01
The longest sensitizable paths of a circuit are referred to as the critical paths of the circuit. Finding all the critical paths in a circuit is called the critical path problem. There are various methods at present to find the critical path of a...
Helicopter final assembly critical path analysis
Daigh, Sara L. (Sarah Louise), 1981-
2012-01-01
Helicopter final assembly involves the installation of hundreds of components into the aircraft and takes thousands of man-hours. Meeting production targets such as total build days and total aircraft man-hours can be ...
China Energy and Emissions Paths to 2030
Fridley, David
2012-01-01
Tiger: Subsidies to China’s Paper Industry from 2002-2009. ”Given the Chinese paper industry’s current production mix,Industry Ammonia Industry Paper Industry Industry Aluminum
The National Ignition Facility (NIF) A Path to Fusion Energy
Moses, E
2006-11-27
Fusion energy has long been considered a promising clean, nearly inexhaustible source of energy. Power production by fusion micro-explosions of inertial confinement fusion (ICF) targets has been a long term research goal since the invention of the first laser in 1960. The NIF is poised to take the next important step in the journey by beginning experiments researching ICF ignition. Ignition on NIF will be the culmination of over thirty years of ICF research on high-powered laser systems such as the Nova laser at LLNL and the OMEGA laser at the University of Rochester as well as smaller systems around the world. NIF is a 192 beam Nd-glass laser facility at LLNL that is more than 90% complete. The first cluster of 48 beams is operational in the laser bay, the second cluster is now being commissioned, and the beam path to the target chamber is being installed. The Project will be completed in 2009 and ignition experiments will start in 2010. When completed NIF will produce up to 1.8 MJ of 0.35 {micro}m light in highly shaped pulses required for ignition. It will have beam stability and control to higher precision than any other laser fusion facility. Experiments using one of the beams of NIF have demonstrated that NIF can meet its beam performance goals. The National Ignition Campaign (NIC) has been established to manage the ignition effort on NIF. NIC has all of the research and development required to execute the ignition plan and to develop NIF into a fully operational facility. NIF will explore the ignition space, including direct drive, 2{omega} ignition, and fast ignition, to optimize target efficiency for developing fusion as an energy source. In addition to efficient target performance, fusion energy requires significant advances in high repetition rate lasers and fusion reactor technology. The Mercury laser at LLNL is a high repetition rate Nd-glass laser for fusion energy driver development. Mercury uses state-o-the art technology such as ceramic laser slabs and light diode pumping for improved efficiency and thermal management. Progress in NIF, NIC, Mercury, and the path forward for fusion energy will be presented.
Fine, Dana S.; Sawin, Stephen
2014-06-15
Following Feynman's prescription for constructing a path integral representation of the propagator of a quantum theory, a short-time approximation to the propagator for imaginary-time, N = 1 supersymmetric quantum mechanics on a compact, even-dimensional Riemannian manifold is constructed. The path integral is interpreted as the limit of products, determined by a partition of a finite time interval, of this approximate propagator. The limit under refinements of the partition is shown to converge uniformly to the heat kernel for the Laplace-de Rham operator on forms. A version of the steepest descent approximation to the path integral is obtained, and shown to give the expected short-time behavior of the supertrace of the heat kernel.
Path integral derivations of novel complex trajectory methods
Jeremy Schiff; Yair Goldfarb; David J. Tannor
2008-07-30
Path integral derivations are presented for two recently developed complex trajectory techniques for the propagation of wave packets, Complex WKB and BOMCA. Complex WKB is derived using a standard saddle point approximation of the path integral, but taking into account the hbar dependence of both the amplitude and the phase of the intial wave function, thus giving rise to the need for complex classical trajectories. BOMCA is derived using a modification of the saddle point technique, in which the path integral is approximated by expanding around a near-classical path, chosen so that up to some predetermined order there is no need to add any correction terms to the leading order approximation. Both Complex WKB and BOMCA give the same leading order approximation; in Complex WKB higher accuracy is achieved by adding correction terms, while in BOMCA no additional terms are ever added -higher accuracy is achieved by changing the path along which the original approximation is computed. The path integral derivation of the methods explains the need to incorporate contributions from more than one trajectory, as observed in previous numerical work. On the other hand, it emerges that the methods provide efficient schemes for computing the higher order terms in the asymptotic evaluation of path integrals. The understanding we develop of BOMCA suggests that there should exist near-classical trajectories that give exact quantum dynamical results when used in the computation of the path integral keeping just the leading order term. We also apply our path integral techniques to give a compact derivation of the semiclassical approximation to the coherent state propagator.
Path forward for dosimetry cross sections
Griffin, P.J. [Sandia National Laboratories, Albuquerque, NM 87185-1146 (United States); Peters, C.D. [Sandia Staffing Alliance, Albuquerque, NM 87110 (United States)
2011-07-01
In the 1980's the dosimetry community embraced the need for a high fidelity quantification of uncertainty in nuclear data used for dosimetry applications. This led to the adoption of energy-dependent covariance matrices as the accepted manner of quantifying the uncertainty data. The trend for the dosimetry community to require high fidelity treatment of uncertainty estimates has continued to the current time where requirements on nuclear data are codified in standards such as ASTM E 1018. This paper surveys the current state of the dosimetry cross sections and investigates the quality of the current dosimetry cross section evaluations by examining calculated-to-experimental ratios in neutron benchmark fields. In recent years more nuclear-related technical areas are placing an emphasis on uncertainty quantification. With the availability of model-based cross sections and covariance matrices produced by nuclear data codes, some nuclear-related communities are considering the role these covariance matrices should play. While funding within the dosimetry community for cross section evaluations has been very meager, other areas, such as the solar-related astrophysics community and the US Nuclear Criticality Safety Program, have been supporting research in the area of neutron cross sections. The Cross Section Evaluation Working Group (CSEWG) is responsible for the creation and maintenance of the ENDF/B library which has been the mainstay for the reactor dosimetry community. Given the new trends in cross section evaluations, this paper explores the path forward for the US nuclear reactor dosimetry community and its use of the ENDF/B cross-sections. The major concern is maintenance of the sufficiency and accuracy of the uncertainty estimate when used for dosimetry applications. The two major areas of deficiency in the proposed ENDF/B approach are: 1) the use of unrelated covariance matrices in ENDF/B evaluations and 2) the lack of 'due consideration' of experimental data in the evaluation. (authors)
Path Integral of Bianchi I models in Loop Quantum Cosmology
Xiao Liu; Fei Huang; Jian-Yang Zhu
2013-02-01
A path integral formulation of the Bianchi I models containing a massless scalar field in loop quantum cosmology is constructed. Following the strategy used in the homogenous and isotropic case, the calculation is extended to the simplest non-isotropic models according to the $\\bar{\\mu}$ and $\\bar{\\mu}^{\\prime}$ scheme. It is proved from the path integral angle that the quantum dynamic lacks the full invariance with respect to fiducial cell scaling in the $\\bar{\\mu}$ scheme, but it does not in the $\\bar{\\mu}^{\\prime}$ scheme. The investigation affirms the equivalence of the canonical approach and the path integral approach in loop quantum cosmology.
Selecta from a Life-Long Obsession with Path Integrals
Klauder, John R.
2008-06-18
The definition and interpretation of canonical, phase space path integrals has evolved over many years to achieve a form that now admits a correct and rigorous formulation, which is also covariant under canonical coordinate transformations. Such formulations involve coherent state representations, which, in their modern version, were originally introduced as an alternative tool to construct phase space path integrals. Moreover, coherent state representations lead to physical interpretations that are more natural than those afforded by more traditional representations. Suitable continuous time regularization procedures lead to a covariant phase space path integral formulation that greatly clarifies the vague phrase that canonical quantization requires Cartesian coordinates.
AHSS Stamping Project ? A/SP 050; Nonlinear Strain Paths Project...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Paths Project ASP 061 AHSS Stamping Project ASP 050; Nonlinear Strain Paths Project ASP 061 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies...
Solution Path Clustering with Minimax Concave Penalty and Its Applications to Noisy Big Data
Marchetti, Yuliya
2014-01-01
Path Clustering of Noisy Big Data . . . . . . . . . . . .Y. Wah, and T. Herawan. “Big Data Clustering: A Review. ” InPath Clustering of Noisy Big Data Introduction In this
Energy Upgrade California in Los Angeles County-- The Flex Path Program
Broader source: Energy.gov [DOE]
Energy Upgrade California in Los Angeles County: The Flex Path Program. Provides an overview of the Flex Path Pilot Program, progress and next steps.
The paths and characteristics of real estate entrepreneurs
Kazmierski, Michael (Michael Anthony)
2008-01-01
What paths have real estate entrepreneurs taken to establish their own firm? Also, what characteristics did they develop and utilize in the process? This thesis gives the unique opportunity to better understand the life ...
Multiphase flow and control of fluid path in microsystems
Jhunjhunwala, Manish
2005-01-01
Miniaturized chemical-systems are expected to have advantages of handling, portability, cost, speed, reproducibility and safety. Control of fluid path in small channels between processes in a chemical/biological network ...
Optimizing Path Query Performance: Graph Clustering Strategies \\Lambda
information systems, fleet management, public transit, troop movement, urban planning, to name a few. Among energyefficient path from A to B that does not use toll roads.'' Q2: ``Display all the garages reachable
Navigating Roadblocks on the Path to Advanced Biofuels Deployment
Broader source: Energy.gov [DOE]
Breakout Session 2: Frontiers and Horizons Session 2–C: Navigating Roadblocks on the Path to Advanced Biofuels Deployment Arunas Chesonis, Chief Executive Officer and Chairman of the Board, Sweetwater Energy
Alarm guided critical function and success path monitoring
Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)
1994-01-01
The use of alarm indication on the overview (IPSO) display to initiate diagnosis of challenges to critical functions or unavailability of success paths, and further alarm-based guidance toward ultimate diagnosis.
Ab-initio path integral techniques for molecules
Daejin Shin; Ming-Chak Ho; J. Shumway
2006-11-09
Path integral Monte Carlo with Green's function analysis allows the sampling of quantum mechanical properties of molecules at finite temperature. While a high-precision computation of the energy of the Born-Oppenheimer surface from path integral Monte Carlo is quite costly, we can extract many properties without explicitly calculating the electronic energies. We demonstrate how physically relevant quantities, such as bond-length, vibrational spectra, and polarizabilities of molecules may be sampled directly from the path integral simulation using Matsubura (temperature) Green's functions (imaginary-time correlation functions). These calculations on the hydrogen molecule are a proof-of-concept, designed to motivate new work on fixed-node path-integral calculations for molecules.
Algorithms for an Unmanned Vehicle Path Planning Problem
Qin, Jianglei
2013-06-25
Unmanned Vehicles (UVs) have been significantly utilized in military and civil applications over the last decade. Path-planning of UVs plays an important role in effectively using the available resources such as the UVs and sensors as efficiently...
Directional pre-verbs and the registration of path
Rhodes, Richard Alan
2005-01-01
to paths: bi- ‘coming’, ani- ‘going’, bi'mi- ‘goingto this. The morpheme ani- away also appears in future= to-go- coming-mm (Zb) anI'- anim- ni-zlmad ‘go away‘
Glider Path-Planning for Optimal Sampling of Mesoscale Eddies
Smith, Ryan N.
Glider Path-Planning for Optimal Sampling of Mesoscale Eddies Daniel Hernandez1 , Ryan Smith2 these, mesoscale eddies are of particular interest due to the relevance they have in many oceano
Human-Automation Path Planning Optimization and Decision Support
Cummings, M.L.
2011-01-01
Path planning is a problem encountered in multiple domains, including unmanned vehicle control, air traffic control, and future exploration missions to the Moon and Mars. Due to the voluminous and complex nature of the ...
Optimally Controlling Hybrid Electric Vehicles using Path Forecasting
Kolmanovsky, Ilya V.
The paper examines path-dependent control of Hybrid Electric Vehicles (HEVs). In this approach we seek to improve HEV fuel economy by optimizing charging and discharging of the vehicle battery depending on the forecasted ...
Path dependent receding horizon control policies for hybrid electric vehicles
Kolmanovsky, Ilya V.
Future hybrid electric vehicles (HEVs) may use path-dependent operating policies to improve fuel economy. In our previous work, we developed a dynamic programming (DP) algorithm for prescribing the battery state of charge ...
Inquiry-based learning templates for creating online educational paths
Davis, Sarah Alice
2006-10-30
Walden's Paths, created by the Center for the Study of Digital Libraries, provides a mechanism for leveraging student learning with the incredible amount of educational material on the web by organizing selected web pages ...
A Surprising Path for Proton Transfer Without Hydrogen Bonds
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
A Surprising Path for Proton Transfer Without Hydrogen Bonds Print Hydrogen bonds are found everywhere in chemistry and biology and are critical in DNA and RNA. A hydrogen bond...
Optimally controlling hybrid electric vehicles using path forecasting
Katsargyri, Georgia-Evangelina
2008-01-01
Hybrid Electric Vehicles (HEVs) with path-forecasting belong to the class of fuel efficient vehicles, which use external sensory information and powertrains with multiple operating modes in order to increase fuel economy. ...
A "Sponge" Path to Better Catalysts and Energy Materials | Advanced...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
to APS Science Highlights rss feed A "Sponge" Path to Better Catalysts and Energy Materials September 6, 2013 Bookmark and Share This schematic depicts a new ORNL-developed...
Helium 'balloons' offer new path to control complex materials...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Morgan McCorkle Communications and Media Relations 865.574.7308 Helium 'balloons' offer new path to control complex materials Inserting helium atoms (visualized as a red balloon)...
Directed Polymers in Random Environment: Path Localization and Strong Disorder
Directed Polymers in Random Environment: Path Localization and Strong Disorder Francis COMETS, constrained to stretch in the (d + 1)Âth direction, and governed by the Hamiltonian - # j#1 (##(S j , j
Automatic beam path analysis of laser wakefield particle acceleration data
Geddes, Cameron Guy Robinson
Automatic beam path analysis of laser wakefield particle acceleration data Oliver RÃ¼bel1 in a pipeline fashion to automatically locate and analyze high-energy particle bunches undergoing acceleration
Software-based tool path evaluation for environmental sustainability
KONG, DAEYOUNG; Seungchoun Choi; Yusuke Yasui; Sushrut Pavanaskar; Dornfeld, David; Wright, Paul
2011-01-01
press as: Kong D, et al. Software-based tool path evaluationArchitecture of the simulation software. Besides the studiesanalysis of machining. Software-based simulation tools have
Silicon Ink Technology Offers Path to Higher Efficiency Solar...
Broader source: Energy.gov (indexed) [DOE]
Silicon Ink Technology Offers Path to Higher Efficiency Solar Cells at Lower Cost Partnering with Sunnyvale-based Innovalight, which was acquired by DuPont in July 2011, EERE...
Asymptotically optimal path planning and surface reconstruction for inspection
Papadopoulos, Georgios
2014-01-01
Motivated by inspection applications for marine structures, this thesis develops algorithms to enable their autonomous inspection. Two essential parts of the inspection problem are (1) path planning and (2) surface ...
An Approach towards Reduction of Routing Paths for Mobile Networks
Thakurta, P. K. Guha; Sinha, Prothoma; Mallick, Nilesh [Dept. of CSE, NIT, Durgapur, WB-713209 (India); Bandyopadhyay, Subhansu [Dept. of CSE, University of Calcutta, WB-700009 (India)
2010-10-26
The foundation of various routing paths for a specific call requesting cell has been proposed in this paper. To improve searching efficiency, the number of routing paths has been reduced to a large extent. Hence, this reduction is based on the computation of frequent item sets. The performance of this proposed model is evaluated with respect to a parameter known as 'Occurrence Index (O{sub i})'. With such reduction, a significant performance gain would be achieved.
Geometric Phase and Chiral Anomaly in Path Integral Formulation
Kazuo Fujikawa
2007-11-16
All the geometric phases, adiabatic and non-adiabatic, are formulated in a unified manner in the second quantized path integral formulation. The exact hidden local symmetry inherent in the Schr\\"{o}dinger equation defines the holonomy. All the geometric phases are shown to be topologically trivial. The geometric phases are briefly compared to the chiral anomaly which is naturally formulated in the path integral.
Vacuum Stress and Closed Paths in Rectangles, Pistons, and Pistols
S. A. Fulling; L. Kaplan; K. Kirsten; Z. H. Liu; K. A. Milton
2009-02-12
Rectangular cavities are solvable models that nevertheless touch on many of the controversial or mysterious aspects of the vacuum energy of quantum fields. This paper is a thorough study of the two-dimensional scalar field in a rectangle by the method of images, or closed classical (or optical) paths, which is exact in this case. For each point r and each specularly reflecting path beginning and ending at r, we provide formulas for all components of the stress tensor T_{\\mu\
Vacuum Stress and Closed Paths in Rectangles, Pistons, and Pistols
Fulling, S A; Kirsten, K; Liu, Z H; Milton, K A
2008-01-01
Rectangular cavities are solvable models that nevertheless touch on many of the controversial or mysterious aspects of the vacuum energy of quantum fields. This paper is a thorough study of the two-dimensional scalar field in a rectangle by the method of images, or closed classical (or optical) paths, which is exact in this case. For each point r and each specularly reflecting path beginning and ending at r, we provide formulas for all components of the stress tensor T_{\\mu\
Characterizing the speed and paths of shared bicycles in Lyon
Jensen, Pablo; Ovtracht, Nicolas; Robardet, Céline; 10.1016/j.trd.2010.07.002
2010-01-01
Thanks to numerical data gathered by Lyon's shared bicycling system V\\'elo'v, we are able to analyze 11.6 millions bicycle trips, leading to the first robust characterization of urban bikers' behaviors. We show that bicycles outstrip cars in downtown Lyon, by combining high speed and short paths.These data also allows us to calculate V\\'elo'v fluxes on all streets, pointing to interesting locations for bike paths.
Initial Studies Toward Real-Time Transmission Path Rating
Singh, Ruchi; Diao, Ruisheng; Cai, Niannian; Huang, Zhenyu; Tuck, Brian; Guo, Xinxin
2012-07-26
Demand continues to increase while transmission line construction is being constrained by multiple factors— economic, environmental, and political. Effective and efficient utilization of transmission lines is thus of great importance in an open access environment. Large blocks of power are transferred from areas with inexpensive generation to heavy load demand areas or areas with high generation costs. This results in some transmission paths being loaded closer to their path ratings, which limits further power transfer between areas. Traditionally, rating of important paths was determined off line by assuming the worst-case study scenario; once determined, it could be used for years. With increasing uncertainty arising from rapid growth of renewable energy and smart technologies, path rating studies are needed in near-real time to account for the latest system status and support a reliable and economic power grid. This paper adopts a simplified procedure based on standards of the North American Electric Reliability Corporation (NERC) to determine total transfer capability (TTC) or transfer limit for the purpose of demonstrating the benefits and necessity of real-time path rating. Initial studies are conducted to compute TTC of a two-area test system and a 39-bus test system. Results indicate that path rating can be significantly affected by loading conditions, generator schedules, system topology and other factors.
NGNP Project 2011 Status and Path Forward
L.E. Demick
2011-12-01
High Temperature Gas Reactor (HTGR) technology can play an important role in the United States’ energy future by extending the use of nuclear energy for non-electricity energy production missions as well as continuing to provide a considerable base load electric power generation capability. Extending nuclear energy into the industrial and transportation sectors through the co-production of process heat and electricity provides safe and reliable energy for these sectors in an environmentally responsible manner. The safety case for the modular HTGR provides a substantial improvement in nuclear plant safety for the protection of the public and the environment, and supports collocation of the HTGR with major industrial facilities. The NGNP Project at the Idaho National Laboratory has been working toward an objective of commercializing the HTGR technology under DOE direction since 2006. The Project is undergoing a quantum shift in direction and scope as a result of recent DOE decisions. This paper summarizes where the Project has been, where it is at the time of this writing and what is needed in future activities to commercialize HTGR technology.
Department of Energy's ESnet and NERSC Blaze 400G Production...
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(Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net ESnet and NERSC Blaze 400G Production Network Path 400G...
A Markov Chain Model for Local Path Protection in Mobile Optical Backbone Networks
Shayman, Mark A.
agents are deployed to provide protection of the paths in the critical points of the network. The second that is disjoint from the active path. Methods in [4], [5] suggest an end-to-end backup path reservation is used for restoring the connectivity when the active path fails. However, in mobile ad hoc networks most
Critical Path Analysis of TCP Transactions Paul Barford and Mark Crovella
Banerjee, Suman
Critical Path Analysis of TCP Transactions Paul Barford and Mark Crovella Abstract Improving critical path analysis. By constructing and pro#12;ling the critical path, it is possible to determine what implemented our technique in a tool called tcpeval that automates critical path analysis for Web transactions
Layout-Aware Pattern Generation for Maximizing Supply Noise Effects on Critical Paths
Tehranipoor, Mohammad
Layout-Aware Pattern Generation for Maximizing Supply Noise Effects on Critical Paths Junxia Ma guardbands to critical paths and (ii) during path delay test to ensure the performance and reliability noise effects on critical paths while considering local voltage drop impacts is proposed. The proposed
Lin, Zhangxi
1 A Cost-Effective Critical Path Approach for Service Priority Optimization in the Grid Computing as a prioritized PERT graph and prove that the localized conditional critical path, which is based on the cost on the non- critical paths with respect to a given critical path. Keywords: Grid computing, computing power
Global Critical Path: A Tool for System-Level Timing Girish Venkataramani
Goldstein, Seth Copen
Global Critical Path: A Tool for System-Level Timing Analysis Girish Venkataramani Mihai Budiu. Traditionally, the critical path is defined at the RTL level, as the longest path in the combinational logic to define the concept of a Global Critical Path (GCP), for pre- dicting system-level performance. We show
A Dynamic Critical Path Algorithm for Scheduling Scientific Workflow Applications on Global Grids
Melbourne, University of
A Dynamic Critical Path Algorithm for Scheduling Scientific Workflow Applications on Global Grids for the execution of performance driven Grid applications. In this paper, we propose a Dynamic Critical Path (DCP the critical path in the workflow task graph at every step. It assigns priority to a task in the critical path
National facility for advanced computational science: A sustainable path to scientific discovery
2004-01-01
sustainable path towards petaflops performance. In order to effect a fundamental change in computer architecture
Euclidean Path Modeling from Ground and Aerial Views* Irnran N. Junejo and Hassan Foroosh
Foroosh, Hassan
the trajecto- ries, we can efficientlyassign detectedtrajectoryits associ- ated path model, thereby only
The universe as an eigenstate: spacetime paths and decoherence
Ed Seidewitz
2007-03-18
This paper describes how the entire universe might be considered an eigenstate determined by classical limiting conditions within it. This description is in the context of an approach in which the path of each relativistic particle in spacetime represents a fine-grained history for that particle, and a path integral represents a coarse-grained history as a superposition of paths meeting some criteria. Since spacetime paths are parametrized by an invariant parameter, not time, histories based on such paths do not evolve in time but are rather histories of all spacetime. Measurements can then be represented by orthogonal states that correlate with specific points in such coarse-grained histories, causing them to decohere, allowing a consistent probability interpretation. This conception is applied here to the analysis of the two slit experiment, scattering and, ultimately, the universe as a whole. The decoherence of cosmological states of the universe then provides the eigenstates from which our "real" universe can be selected by the measurements carried out within it.
Faddeev-Jackiw quantization and the path integral
David J. Toms
2015-08-29
The method for quantization of constrained theories that was suggested originally by Faddeev and Jackiw along with later modifications is discussed. The particular emphasis of this paper is to show how it is simple to implement their method within the path integral framework using the natural geometric structure that their method utilizes. The procedure is exemplified with the analysis of two models: a quantum mechanical particle constrained to a surface (of which the hypersphere is a special case), and a quantized Schr\\"odinger field interacting with a quantized vector field for both the massive and the massless cases. The results are shown to agree with what is found using the Dirac method for constrained path integrals. We comment on a previous path integral analysis of the Faddeev-Jackiw method. We also discuss why a previous criticism of the Faddeev-Jackiw method is unfounded and why suggested modifications of their method are unnecessary.
Faddeev-Jackiw quantization and the path integral
Toms, David J
2015-01-01
The method for quantization of constrained theories that was suggested originally by Faddeev and Jackiw along with later modifications is discussed. The particular emphasis of this paper is to show how it is simple to implement their method within the path integral framework using the natural geometric structure that their method utilizes. The procedure is exemplified with the analysis of two models: a quantum mechanical particle constrained to a surface (of which the hypersphere is a special case), and a quantized Schr\\"odinger field interacting with a quantized vector field for both the massive and the massless cases. The results are shown to agree with what is found using the Dirac method for constrained path integrals. We comment on a previous path integral analysis of the Faddeev-Jackiw method. We also discuss why a previous criticism of the Faddeev-Jackiw method is unfounded and why suggested modifications of their method are unnecessary.
Networks in Buildings: Which Path Forward?
Nordman, Bruce
2008-08-17
To date, digital networks have principally been installed for connecting information technology devices, with more modest use in consumer electronics, security, and large building control systems. The next 20 years will see much greater deployment of networks in buildings of all types, and across all end uses. Most of these are likely to be introduced primarily for reasons other than energy efficiency, and add energy use for network interfaces and network products. Widespread networking could easily lead to increased energy use, and experience with IT and CE networks suggests this may be likely. Active engagement by energy efficiency professionals in the architecture and design of future networks could lead to their being a large and highly cost-effective tool for efficiency. However, network standards are complex and take many years to develop and negotiate so that lack of action on this in the near term may foreclose important opportunities for years or decades to come. Digital networks need to be common globally, providing another challenge to building systems and elements that are more commonly designed only for national or regional markets. Key future networks are lighting, climate control, and security/presence. This paper reviews some examples of past network designs and use and the lessons they hold for future building networks. It also highlights key needed areas for research, policy, and standards development.
Terasaki, Jun
2015-01-01
It is possible to employ virtual decay paths, including two-particle transfer, to calculate the nuclear matrix element of neutrinoless double-beta decay under the closure approximation, in addition to the true double-beta path. In the quasiparticle random-phase approximation (QRPA) approach, it is necessary to introduce the product wave functions of the like-particle and proton-neutron QRPA ground states, for achieving consistency between the calculations of the true and virtual paths. Using these different paths, the problem of whether or not these two methods give equivalent nuclear matrix elements (NME) is investigated. It is found that the two results are inequivalent, resulting from the different many-body correlations included in the two QRPA methods, i.e., the use of the product wave functions alone is not sufficient. The author proposes introduction of the proton-neutron pairing interaction with an adequate strength in the double-beta-path method, which carries less many-body correlations without this...
Loke, Seng W. - Loke, Seng W.
Page 1Where will Microsoft's green path lead? | InfoWorld | Weblog | March 13, 2008 | By Ted SamsonPrint.jsp?R=printThis&A=http://weblog.in... Back to article Print this Where will Microsoft's green path lead? For months now, many of the hardware lengths to highlight their green products, plans, and corporate visions. Now the software behemoth
Update on Genomic Studies of Algae Paths toward Algal Genomics
Update on Genomic Studies of Algae Paths toward Algal Genomics Arthur R. Grossman* The Carnegie the expression of genes. In this introductory manuscript, I discuss select algae and how genomics is impacting our understanding of these organisms. Four algae for which near-full genome information has become
Shortest Path Discovery Problems: A Framework, Algorithms and Experimental Results
Szepesvari, Csaba
Shortest Path Discovery Problems: A Framework, Algorithms and Experimental Results Csaba Szepesv characterize some common properties of sound SPD algorithms, propose a partic- ular algorithm that is shown of the approach whereas the pro- posed algorithm is shown to yield a substantial speed-up of the recognition
Update on Genomic Studies of Algae Paths toward Algal Genomics
Update on Genomic Studies of Algae Paths toward Algal Genomics Arthur R. Grossman* The Carnegie of genomic information that is being used to help researchers understand the gene content of organisms, how the expression of genes. In this introductory manuscript, I discuss select algae and how genomics is impacting
Path Planning on Manifolds using Randomized Higher-Dimensional Continuation
Porta, Josep M.
´eonard Jaillet Abstract Despite the significant advances in path planning methods, problems in- volving highly constrained systems. It builds on recently developed tools for Higher-dimensional Continuation, which provide enveloping the sphere, the exploration is relatively homogeneous. b When the box is elongated along
Planning Singularity-free Paths on Closed-Chain Manipulators
Ros, Lluís
. Henderson is with the Numerical Analysis Group in the Mathematical Sciences Department at IBM's Thomas J for computing singularity-free paths on closed-chain manipulators. Given two non-singular configurations configuration is found. If desired, the method can also be used to compute an exhaustive atlas of the whole
Paths of Trains with Two-Wheeled Cars Luis Montejano
Urrutia, Jorge
Paths of Trains with Two-Wheeled Cars Luis Montejano , and Jorge Urrutia June 17, 2004 Abstract In this paper we study the following simple and mind-puzzling prob- lem: Can a model train car, which runs along closed curve, and the cars of our model train by segments whose end-points lie on the curve. 1
UAV PATH FOLLOWING FOR TARGET OBSERVATION IN WIND
UAV PATH FOLLOWING FOR TARGET OBSERVATION IN WIND Rolf Rysdyk, University of Washington, Seattle guidance and syn- chronous camera angles to observe a target from an unmanned-aerial-vehicle (UAV).1 Semi- autonomous operation of UAVs for target sensing have shown that operator situational awareness can be easily
Energy-efficient Paths in Radio Networks Rene Beier1
Matijevic, Domagoj
Energy-efficient Paths in Radio Networks Rene Beier1 , Stefan Funke1 , Domagoj Matijevi´c1 has linear size and which can be build in O(n log n) time. The dependence on is polynomial in 1/. One
The Path Less Travelled: Overcoming Tor's Bottlenecks with Traffic Splitting
Goldberg, Ian
The Path Less Travelled: Overcoming Tor's Bottlenecks with Traffic Splitting Mashael AlSabah, Kevin of Computer Science University of Waterloo Abstract. Tor is the most popular low-latency anonymity network, Tor has a variety of performance problems that result in poor quality of service, a strong
Pseudo Functional Path Delay Test through Embedded Memories
Gao, Yukun
2015-04-29
On-chip memory arrays are widely used in systems-on-chip. Prior research has shown that timing critical paths often go through these memories. Embedded memories are typically tested using memory built-in self-test and macro test. However...
Path Integral Monte-Carlo Calculations for Relativistic Oscillator
Alexandr Ivanov; Oleg Pavlovsky
2014-11-11
The problem of Relativistic Oscillator has been studied in the framework of Path Integral Monte-Carlo(PIMC) approach. Ultra-relativistic and non-relativistic limits have been discussed. We show that PIMC method can be effectively used for investigation of relativistic systems.
Folded-Light-Path Colloidal Quantum Dot Solar Cells
Sargent, Edward H. "Ted"
Folded-Light-Path Colloidal Quantum Dot Solar Cells Ghada I. Koleilat*, Illan J. Kramer*, Chris T-processed solar cells offer the promise of low cost, large-area processing, and, prospectively, high solar power solar cell performance20,21 . Results In the present work, we sought to increase the interaction
Reports & Opinion A network of paths toward innovation
Plotkin, Joshua B.
Reports & Opinion A network of paths toward innovation The Origins of Evolutionary Innovations mutant phenotypes that may lead to an adaptive innovation. Wagner did not invent the idea of neutral the astounding abil- ity of life to produce true innovation in the face of environmental change and opportunity
Combinatorial Filters: Sensor Beams, Obstacles, and Possible Paths
LaValle, Steven M.
, New York, NY 10121-0701 USA, fax +1 (212) 869-0481, or permissions@acm.org. c 1885 ACM many possible alternative implementations. The task is to determine the possible body paths based only was implemented in simulation. An inexpensive, low-energy, easily deployable architecture was also created, which
Combinatorial Filters: Sensor Beams, Obstacles, and Possible Paths
LaValle, Steven M.
Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax +1 (212) 869 possible alternative implementations. The task is to determine the possible body paths based only on sensor in simulation. An inexpensive, low-energy, easily deployable architecture was also created, which implements
MANAGING HANFORD'S LEGACY NO-PATH-FORWARD WASTES TO DISPOSITION
WEST LD
2011-01-13
The U.S. Department of Energy (DOE) Richland Operations Office (RL) has adopted the 2015 Vision for Cleanup of the Hanford Site. This vision will protect the Columbia River, reduce the Site footprint, and reduce Site mortgage costs. The CH2M HILL Plateau Remediation Company's (CHPRC) Waste and Fuels Management Project (W&FMP) and their partners support this mission by providing centralized waste management services for the Hanford Site waste generating organizations. At the time of the CHPRC contract award (August 2008) slightly more than 9,000 m{sup 3} of waste was defined as 'no-path-forward waste.' The majority of these wastes are suspect transuranic mixed (TRUM) wastes which are currently stored in the low-level Burial Grounds (LLBG), or stored above ground in the Central Waste Complex (CWC). A portion of the waste will be generated during ongoing and future site cleanup activities. The DOE-RL and CHPRC have collaborated to identify and deliver safe, cost-effective disposition paths for 90% ({approx}8,000 m{sup 3}) of these problematic wastes. These paths include accelerated disposition through expanded use of offsite treatment capabilities. Disposal paths were selected that minimize the need to develop new technologies, minimize the need for new, on-site capabilities, and accelerate shipments of transuranic (TRU) waste to the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico.
PATH PLANNING & MEASUREMENT REGISTRATION FOR ROBOTIC STRUCTURAL ASSET MONITORING
Boyer, Edmond
European Workshop on Structural Health Monitoring July 8-11, 2014. La Cité, Nantes, France Copyright Workshop on Structural Health Monitoring (2014)" #12;INTRODUCTION When considering the applicationPATH PLANNING & MEASUREMENT REGISTRATION FOR ROBOTIC STRUCTURAL ASSET MONITORING S.G. Pierce, C
Knee's Motion Path Relative to the Passive Coupled Kinematic Envelope
Dodd, Kevin A.
2009-06-15
, and describe motion relative to them. The coupled envelopes of internal/external (IE), varus/ valgus (VV), and anterior/ posterior (AP) motion and a neutral path were used to describe loaded lunges and a simulated walk cycle. The envelopes were created...
Communication and Path Planning Strategies of a Robotic Coverage Operation
Mostofi, Yasamin
Communication and Path Planning Strategies of a Robotic Coverage Operation Yuan Yan and Yasamin, and finding a good spot for communication, in order to successfully transmit all the collected bits communication and motion energy costs, while operating in a realistic communication environment and under
A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning
Boyer, Edmond
A Miniature Biomimetic Robotic Fish and Its Realtime Path Planning Chao Zhou, Zhiqiang Cao, Shuo a novel miniature biomimetic robotic fish based on single link with compact structure, high maneuverability and multiple sensors. The robotic fish mimics the motion of Thunniform mode, and the methods
Path Length Correction for dE/dx Olushakin Olojo
Cinabro, David
Path Length Correction for dE/dx Olushakin Olojo Department of Mechanical Engineering Wayne State used in CLEO. Due to the recent use of Helium Propane gas in the drift chamber, it is now possible of 5050% ArgonEthane to 6040% HeliumPropane in the CLEO drift chamber has reduced e#ects caused
The Department of Psychology A Path into Clinical Psychology
Liu, Taosheng
The Department of Psychology Presents A Path into Clinical Psychology Date: Wednesday, March 25, PhD. Dr. Alytia Levendosky is a Professor of Clinical Psychology and the Director of Clinical Psychology program. Her research interests involve interpersonal processes, particularly within attachment
ASSESSING AUTOMATED AND HUMAN PATH PLANNING FOR THE SLOCUM GLIDER
Kremer, Ulrich
Autonomous Underwater Vehicles (AUVs) are a com- mon tool used by oceanographers to study oceans. Most AUVs be trusted. We have developed a testbed environment to assess the flight paths and energy consumptions by the commercially available glider. Using our simulation testbed, we were able to develop and test an alternative
Minimal Energy Path Planning for Wireless Robots Chia Ching Ooi
Schindelhauer, Christian
of challenges to judge the tradeoff of the energy usage between robot movement and communications. In additionMinimal Energy Path Planning for Wireless Robots Chia Ching Ooi Albert-Ludwigs-Universit¨at Freiburg Computer Networks and Telematics Georges-K¨ohler-Allee 51, 79110 Freiburg, Germany Email: ooi
Geodesics and Shortest Paths Approach in Pedestrian Motions
Rascle, Michel
Geodesics and Shortest Paths Approach in Pedestrian Motions B. Nkonga and M. Rascle1 and F.M. are from Geography. We present and revisit here in some details the modeling of pedestrian flows based]. In the context of pedestrian flows [1], and many subsequent papers, e.g. [2, 14]. Our approach here was motivated
Tribal Energy Summit: A Path to Economic Sovereignty
Broader source: Energy.gov [DOE]
The U.S. Department of Energy (DOE) is participating in a National Tribal Energy Summit: A Path to Economic Sovereignty September 23–25, 2015, in Washington, D.C. The National Summit supports the Obama Administration’s ongoing commitment to assist tribal efforts to enhance energy security, increase community resiliency, and cultivate a sustainable energy future.
Proc. FORTE 2015, (c) Springer Sliced Path Prefixes
Beyer, Dirk
. Proc. FORTE 2015, (c) Springer Sliced Path Prefixes: An Effective Method to Enable Refinement Selection Dirk Beyer, Stefan Löwe, and Philipp Wendler University of Passau, Germany Abstract. Automatic a significant impact on the verification effectiveness and efficiency. 1 Introduction In the field of automatic
Ship-based liquid water path estimates in marine stratocumulus
Zuidema, Paquita
October 2005. [1] We examine liquid water paths (LWPs) derived from ship-based microwave radiometer to microwave absorption model differences are 1025 g mÀ2 , increasing with LWP. The most recent models produce cycle, through the longwave cloud top radiative cooling and liquid water's ability to absorb solar
Improving WCET by Applying Worst-Case Path Optimizations
Mueller, Frank
Science Department, North Carolina State University mueller@cs.ncsu.edu Abstract It is advantageous at a higher clock rate, which consumes more energy. Many researchers use profiling to identify the frequently. Compiler writers in recent years have used profile information to detect the frequently executed paths
Bounded Uncertainty Roadmaps for Path Planning Leonidas J. Guibas1
Guibas, Leonidas J.
Bounded Uncertainty Roadmaps for Path Planning Leonidas J. Guibas1 , David Hsu2 , Hanna Kurniawati2 uncertainty during planning. We in- troduce the notion of a bounded uncertainty roadmap (BURM) and use, and it is not much slower than classic probabilistic roadmap planning algorithms, which ignore uncertainty
Path Deformation Roadmaps Leonard Jaillet and Thierry Simeon
Cortés, Juan
Path Deformation Roadmaps L´eonard Jaillet and Thierry Sim´eon LAAS-CNRS, Toulouse, France with PRM methods. Our aim is to compute good quality roadmaps that encode the multiple connectedness-PRM technique [12] to constructing compact roadmaps that encode a richer and more suitable information than
Decline design in underground mines using constrained path optimisation
Wormald, Nick
of optimising the design of an underground mine decline, so as to minimise the costs associated with infras and costs of a real mine, and is optimised using geo- metric techniques for constrained path optimisation (horizontal drives) that connects the access points (points which must be accessed for drilling and blasting
On the Path to Low Cost Renewable Fuels, an Important Breakthrough...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
On the Path to Low Cost Renewable Fuels, an Important Breakthrough On the Path to Low Cost Renewable Fuels, an Important Breakthrough April 18, 2013 - 4:10pm Addthis NREL Scientist...
Scientists at ALS Find New Path to More Efficient Organic Solar...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Scientists at ALS Find New Path to More Efficient Organic Solar Cells Scientists at ALS Find New Path to More Efficient Organic Solar Cells Print Monday, 07 January 2013 00:00...
Finding a Hamiltonian Path in a Cube with Specified Turns is Hard
Abel, Zachary Ryan
We prove the NP-completeness of finding a Hamiltonian path in an N × N × N cube graph with turns exactly at specified lengths along the path. This result establishes NP-completeness of Snake Cube puzzles: folding a chain ...
Automatic Search of Differential Path in MD4 Pierre-Alain Fouque, Gatan Leurent, Phong Nguyen
International Association for Cryptologic Research (IACR)
Automatic Search of Differential Path in MD4 Pierre-Alain Fouque, Gaëtan Leurent, Phong Nguyen paths were found "by hand". In this paper, we present an algorithm which automatically finds suitable
Moisture Risk in Unvented Attics Due to Air Leakage Paths
Prahl, D.; Shaffer, M.
2014-11-01
IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.
Moisture Risk in Unvented Attics Due to Air Leakage Paths
Prahl, D.; Shaffer, M.
2014-11-01
IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Wärme und Feuchte instationär Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.
Tackling Higher Derivative Ghosts with the Euclidean Path Integral
Michele Fontanini; Mark Trodden
2011-02-21
An alternative to the effective field theory approach to treat ghosts in higher derivative theories is to attempt to integrate them out via the Euclidean path integral formalism. It has been suggested that this method could provide a consistent framework within which we might tolerate the ghost degrees of freedom that plague, among other theories, the higher derivative gravity models that have been proposed to explain cosmic acceleration. We consider the extension of this idea to treating a class of terms with order six derivatives, and find that for a general term the Euclidean path integral approach works in the most trivial background, Minkowski. Moreover we see that even in de Sitter background, despite some difficulties, it is possible to define a probability distribution for tensorial perturbations of the metric.
Gas-path leakage seal for a turbine
Bagepalli, B.S.; Aksit, M.F.; Farrell, T.R.
1999-08-10
A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a turbine (such as combustor casing segments of a gas turbine). The seal includes a flexible and generally imperforate metal sheet assemblage having opposing first and second surfaces and two opposing raised edges extending a generally identical distance above and below the surfaces. A first cloth layer assemblage has a thickness generally equal to the previously-defined identical distance and is superimposed on the first surface between the raised edges. A second cloth layer assemblage is generally identical to the first cloth layer assemblage and is superimposed on the second surface between the raised edges. 5 figs.
A HYBRID GRASP WITH PERTURBATIONS AND ADAPTIVE PATH-RELINKING FOR THE STEINER PROBLEM IN GRAPHS
Makarychev, Konstantin
with weight perturbations and adaptive path-relinking heuristic (HGP-PR) for the Steiner problem in graphs
Path integral representation of the evolution operator for the Dirac equation
Alexander S. Lukyanenko; Inna A. Lukyanenko
2006-05-25
A path integral representation of the evolution operator for the four-dimensional Dirac equation is proposed. A quadratic form of the canonical momenta regularizes the original representation of the path integral in the electron phase space. This regularization allows to obtain a representation of the path integral over trajectories in the configuration space, i.e. in the Minkowsky space. This form of the path integral is useful for the formulation of perturbation theory in an external electromagnetic field.
Essential paths space on ADE SU(3) graphs: A geometric approach
Jesus A. Pineda; E. Isasi; M. I. Caicedo
2015-04-10
For simply laced $SU(3)$ graphs we offer a geometric understanding of the path creation and annihilation operators for $SU(3)$ in terms of creation and annihilation of sequences of three vertices forming triangular cells or collapsed triangular cells. We prove that the space of paths of a given length can be decomposed as a direct sum of orthogonal sub-spaces constructed by recurrent applications of the path creation operator on subspaces of essential paths of shorter length.
Gouy phase in non-classical paths in triple-slit interference experiment
Irismar da Paz; Carlos Vieira; Robert Ducharme; Luis Cabral; Helder Alexander; Marcos Sampaio
2015-10-14
We propose a simple model to study the Gouy phase effect in the triple-slit experiment in which we consider a non-classical path. The Gouy phase differs for classical or non-classical paths as it depends on the propagation time. In this case the Gouy phase difference changes the Sorkin parameter $\\kappa$ used to estimate non-classical path contribution in a nontrivial way shedding some light in the implementation of experiments to detect non-classical path contributions.
Evaluation of a total energy sensor for glide path control
Oseguera, Rosa Maria
1987-01-01
of optimization problems and boundary conditions. The performance index was defined in terms of altitude h (relative and absolute), or path inclination 7 (relative and absolute) to determine the optimal trajectory on take-off through a wind shear. Resulting... flow. The subsequent mass flow was measured by a constant-temperature hot film probe in the duct. Airspeed, altitude, and climb speed were recorded using an analog and a digital recording system. The wind field was modeled approximately...
Path Integral Quantization of Landau-Ginzburg Theory
Walaa. I. Eshraim
2013-01-11
Hamilton-Jacobi approach for a constrained system is discussed. The equation of motion for a singular systems are obtained as total differential equations in many variables. The integrability conditions are investigated without using any gauge fixing condition. The path integral quantization for systems with finite degrees of freedom is applied to the field theories with constraints. The Landau-Ginzburg theory is investigated in details.
Weak Interaction Rates of Nuclei Near the R-Process Paths
Borzov, I. N.; Cuenca-Garcia, J. J.; Langanke, K.; Martinez-Pinedo, G.; Kelic, A. [Gesellschaft fuer Schwerionenforschung, Darmstadt, D-64291 (Germany); Zinner, N. T. [Institute for Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
2007-05-22
Systematic calculations of the beta- and neutrino-induced rates are performed for the nuclei at Z=92-96 approaching the possible r-process paths in vicinity of the spherical neutron shell at N=184. The nuclear ground states are treated self-consistently in the framework of the local energy-density functional (DF) theory. The beta-strength-functions of the Gamow-Teller and first-forbidden decays are calculated within the continuum QRPA approach of the finite Fermi system theory. The beta-decay half-lives and beta-delayed neutron emission probabilities are analyzed simultaneously. Within the same approach the weak interaction rates are calculated for the fission products around Z{approx_equal}50, N=82 forming the A=130 peak in the r-process isotopic abundance. A shell-model study of selected Pd isotopes is performed. An analysis of available experimental data and theoretical predictions from the FRDM is also presented.
Path dependence, its critics and the quest for `historical economics' Paul A. David
Tesfatsion, Leigh
Path dependence, its critics and the quest for `historical economics' By Paul A. David All Souls@leland.stanford.edu> #12;2 2 Path dependence, its critics and the quest for `historical economics'1 1. Introduction for publication in Evolution and Path Dependence in Economic Ideas: Past and Present, edited by P. Garrouste and S
Efficient Block-Based Parameterized Timing Analysis Covering All Potentially Critical Paths
Najm, Farid N.
Efficient Block-Based Parameterized Timing Analysis Covering All Potentially Critical Paths Khaled in the parameter space, by reporting all paths that can become critical. Using an efficient pruning algorithm, only) but by knowledge of the paths that can become critical at nearby points in parameter space. We give a formal
Critical Path Analysis for the Execution of Parallel and Distributed Programs Cui-Qing Yang
Miller, Barton P.
Critical Path Analysis for the Execution of Parallel and Distributed Programs Cui-Qing Yang. One example of such techniques finds the critical path through a graph of a program's execution history. This paper presents the design, implementation and test- ing of the critical path analysis
Probabilistic Critical Path Identification for Cost-Effective Monitoring of Service-based Systems
Schneider, Jean-Guy
Probabilistic Critical Path Identification for Cost-Effective Monitoring of Service- based Systems. In volatile operating environments, the critical path of a SBS is probabilistic. As such, it is important to estimate the criticalities of the execution paths and the component services, i.e., the probabilities
Schneider, Jean-Guy
Probabilistic Critical Path Identification for Cost-Effective Monitoring of Service-based Web@hust.edu.cn Steve Versteeg CA Labs Melbourne, Australia 3122 steve.versteeg@ca.com ABSTRACT The critical path as it determines the response time of the Web application. In volatile operating environments, the critical path
Path Integral Monte Carlo Calculation of the Deuterium Hugoniot B. Militzer and D. M. Ceperley
Militzer, Burkhard
Path Integral Monte Carlo Calculation of the Deuterium Hugoniot B. Militzer and D. M. Ceperley-Champaign, Urbana, IL 61801 (January 21, 2000) Restricted path integral Monte Carlo simulations have been used#11;ects and the dependence on the time step of the path integral. Further, we compare the results
arXiv:physics/000104722Jan2000 Path Integral Monte Carlo Calculation of the Deuterium Hugoniot
Militzer, Burkhard
arXiv:physics/000104722Jan2000 Path Integral Monte Carlo Calculation of the Deuterium Hugoniot B University of Illinois at Urbana-Champaign, Urbana, IL 61801 (January 21, 2000) Restricted path integral of the path integral. Further, we compare the results obtained with a free particle nodal restriction
Calculation of heat capacities of light and heavy water by path-integral molecular dynamics
Nielsen, Steven O.
Calculation of heat capacities of light and heavy water by path-integral molecular dynamics 30 September 2005 As an application of atomistic simulation methods to heat capacities, path-integral has estimated the heat capacities too high, the quantum simulation based on path-integral molecular
Miller, William H.
Path integral evaluation of the quantum instanton rate constant for proton transfer in a polar developed by Azzouz and Borgis. Monte Carlo path integral methods are used to carry out the calculations evaluated for comparison using the present path integral approach. A technique is then introduced
Random Disambiguation Paths for Traversing a Mapped Hazard Field Carey E. Priebe,1
Priebe, Carey E.
disambiguation path (RDP), which is a curve-valued random variable parametrized by a binary tree with particular Logistics 52: 285292, 2005. Keywords: random path; path planning; marked point pattern; mine; minefield 1. INTRODUCTION Suppose that a spatial point process has generated true and false detections, and each detection
Huliq:Breaking News Submit News Login Linear Nanotubes Offer Path To High-Performance Electronics
Rogers, John A.
Huliq:Breaking News Submit News Login Linear Nanotubes Offer Path To High-Performance Electronics.MoSys.com Page 1 of 2Linear nanotubes offer path to high-performance electronics | Huliq: Breaking News 3/28/2007http://www.huliq.com/16423/linear-nanotubes-offer-path-to-high-performance-electronics #12;compared
Integrated Control-Path Design and Error Recovery in the Synthesis of Digital
Chakrabarty, Krishnendu
11 Integrated Control-Path Design and Error Recovery in the Synthesis of Digital Microfluidic Lab that incorporates control paths and an error- recovery mechanism in the design of a digital microfluidic lab, compared to a baseline chip design, the biochip with a control path can reduce the completion time by 30
Graph Based Representation of Walden’s Paths in Drupal 7
Singh, Swati
2015-04-30
The Walden’s Paths Project is used by different communities in order to create and use linear paths that link to documents available on the web. Walden’s Paths has been implemented as a web application using Drupal where ...
Sustainable Infrastructure Practices Bicycle Paths & Parking Areas, Page 1 UC SANTA BARBARA
Bigelow, Stephen
Sustainable Infrastructure Practices Bicycle Paths & Parking Areas, Page 1 UC SANTA BARBARA Sustainable Infrastructure Practices Bicycle Paths and Parking Areas Contact: Administrative Services BICYCLE PATHS AND PARKING AREAS OVERVIEW The bicycle system at UCSB is a primary element of the campus
Path Deformation Roadmaps: Compact Graphs with Useful Cycles for Motion Planning
Cortés, Juan
Path Deformation Roadmaps: Compact Graphs with Useful Cycles for Motion Planning L´eonard Jaillet quality roadmaps that encode the multiple connectedness of the configuration space inside small but yet Roadmaps (PDR) rely on a notion of path deformability indicating whether or not a given path can
World Oil Price Cases (released in AEO2005)
Reports and Publications (EIA)
2005-01-01
World oil prices in Annual Energy Outlook 2005 are set in an environment where the members of OPEC (Organization of the Petroleum Exporting Countries) are assumed to act as the dominant producers, with lower production costs than other supply regions or countries. Non-OPEC oil producers are assumed to behave competitively, producing as much oil as they can profitability extract at the market price for oil. As a result, the OPEC member countries will be able effectively to set the price of oil when they can act in concert by varying their aggregate production. Alternatively, OPEC members could target a fixed level of production and let the world market determine the price.
Modular Fusion Power Cores1 S. Woodruff, R. L. Miller To take any new energy technology to market, we have: Market, Path, and Compact Fusion Systems. US Electricity Market "Electricity demand (including retail. Mattor, D. L. Stoulil, R. Miller, T. Marston. Woodruff Path to market for compact modular fusion power
Path-sensitive analysis for reducing rollback overheads
O'Brien, John K.P.; Wang, Kai-Ting Amy; Yamashita, Mark; Zhuang, Xiaotong
2014-07-22
A mechanism is provided for path-sensitive analysis for reducing rollback overheads. The mechanism receives, in a compiler, program code to be compiled to form compiled code. The mechanism divides the code into basic blocks. The mechanism then determines a restore register set for each of the one or more basic blocks to form one or more restore register sets. The mechanism then stores the one or more register sets such that responsive to a rollback during execution of the compiled code. A rollback routine identifies a restore register set from the one or more restore register sets and restores registers identified in the identified restore register set.
An Open-path Laser Transmissometer for Atmospheric Extinction Measurements
Chandran, P. M. Satheesh; Krishnakumar, C. P.; Varma, Ravi [Department of Physics, National Institute of Technology Calicut, Calicut, Kerala 673 601 (India); Yuen, Wangki; Rood, Mark J. [Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, Urbana (United States)
2011-10-20
A transmissometer is an optical instrument which measures transmitted intensity of monochromatic light over a fixed pathlength. Prototype of a simple laser transmissometer has been developed for transmission (or extinction) measurements through suspended absorbers and scatterers in the atmosphere over tens of meters. Instrument consists of a continuous green diode pumped solid state laser, transmission optics, photodiode detectors and A/D data acquisition components. A modulated laser beam is transmitted and subsequently reflected and returned to the unit by a retroreflecting mirror assembly placed several tens of meters away. Results from an open-path field measurement of the instrument are described.
Multi-path transportation futures study: Results from Phase 1
Patterson, Phil; Singh, Margaret; Plotkin, Steve; Moore, Jim
2007-03-09
This PowerPoint briefing provides documentation and details for Phase 1 of the Multi-Path Transportation Futures Study, which compares alternative ways to make significant reductions in oil use and carbon emissions from U.S. light vehicles to 2050. Phase I, completed in 2006, was a scoping study, aimed at identifying key analytic issues and constructing a study design. The Phase 1 analysis included an evaluation of several pathways and scenarios; however, these analyses were limited in number and scope and were designed to be preliminary.
Amplification of maximally-path-entangled number states
Agarwal, G. S.; Rai, Amit [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States); Chaturvedi, S. [School of Physics, University of Hyderabad, Hyderabad 500046 (India)
2010-04-15
We examine the behavior of a non-Gaussian state like the maximally path-entangled number state commonly known as a N00N state under phase-insensitive amplification. We derive an analytical result for the density matrix of the N00N state for arbitrary gain of the amplifier. We consider cases of both symmetric and antisymmetric amplification of the two modes of the N00N state. We quantitatively evaluate the loss of entanglement by the amplifier in terms of the logarithmic negativity parameter. We find that N00N states are more robust than their Gaussian counterparts.
A Path to High-Concentration Luminescent Solar Concentrators
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 News BelowAsked toUSC-Aiken,A NewA NewPath to
TowPath Renewable Ventures | 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 QA:QA J-E-1 SECTION J APPENDIX ECoop Inc JumpHeterInformation PolicyTinna GroupToppan Printing CoTowPath Renewable
Following the Technical Career Path | GE Global Research
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) |FinalIndustrialFollowing the Technical Career Path Click
The Path to Savings: Understanding the Federal Purchase of Energy-Consuming Products
Taylor, Margaret
2014-01-01
eutrophication; and water and energy efficiency. With theproducts and services be energy and water efficient, as laidand services be energy and water efficient (Executive
Vento, Michael Thomas
2012-01-01
Spirit AeroSystems is engaged in an unprecedented collaboration to supply a composite fuselage section for a new aircraft program. In most cases, Spirit cannot effectively leverage its composite sourcing experience with ...
Department of Energy's ESnet and NERSC Blaze 400G Production Network Path
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find what you were lookingAbout this site Â» Department ofand
Gas-path leakage seal for a gas turbine
Wolfe, C.E.; Dinc, O.S.; Bagepalli, B.S.; Correia, V.H.; Aksit, M.F.
1996-04-23
A gas-path leakage seal is described for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as combustor casing segments). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas and is located in the leakage-gap. The seal also includes a cloth-layer assemblage generally enclosingly contacting the foil-layer assemblage. In one seal, the first edge of the foil-layer assemblage is left exposed, and the foil-layer assemblage resiliently contacts the first member near the first edge to reduce leakage in the ``plane`` of the cloth-layer assemblage under conditions which include differential thermal growth of the two members. In another seal, such leakage is reduced by having a first weld-bead which permeates the cloth-layer assemblage, is attached to the metal-foil-layer assemblage near the first edge, and unattachedly contacts the first member. 4 figs.
An optimal path to transition in a duct
Biau, Damien; 10.1098/rsta.2008.0191
2010-01-01
This paper is concerned with the transition of the laminar flow in a duct of square cross-section. Like in the similar case of the pipe flow, the motion is linearly stable for all Reynolds numbers, rendering this flow a suitable candidate for a study of the 'bypass' path to turbulence. It has already been shown \\citep{Biau_JFM_2008} that the classical linear optimal perturbation problem, yielding optimal disturbances in the form of longitudinal vortices, fails to provide an 'optimal' path to turbulence, i.e. optimal perturbations do not elicit a significant nonlinear response from the flow. Previous simulations have also indicated that a pair of travelling waves generates immediately, by nonlinear quadratic interactions, an unstable mean flow distortion, responsible for rapid breakdown. By the use of functions quantifying the sensitivity of the motion to deviations in the base flow, the 'optimal' travelling wave associated to its specific defect is found by a variational approach. This optimal solution is the...
N-slit interference: Path integrals, Bohmian trajectories
Valeriy I Sbitnev
2010-01-25
Path integrals give a possibility to compute in details routes of particles from particle sources through slit gratings and further to detectors. The path integral for a particle passing through the Gaussian slit results in the Gaussian wavepacket. The wavepackets prepared on N slits and superposed together give rise to interference pattern in the near-field zone. It transforms to diffraction in the far-field zone represented by divergent principal rays, at that all rays are partitioned from each other by (N-2) subsidiary rays. The Bohmian trajectories in the near-field zone of N-slit gratings show wavy behavior. And they become straight in the far-field zone. The trajectories show zigzag behavior on the interference Talbot carpet (ratio of particle wavelength to a distance between slits are much smaller than 1 and N>>1). Interference from the the N-slit gratings is simulated by scattering monochromatic neutrons (wavelength=0.5 nm). Also we have considered simulation of interference fringes arising at scattering on an N-slit grating of fullerene molecules (according to the real experiment stated in e-print 1001.0468).
Path integrals and symmetry breaking for optimal control theory
H. J. Kappen
2005-10-07
This paper considers linear-quadratic control of a non-linear dynamical system subject to arbitrary cost. I show that for this class of stochastic control problems the non-linear Hamilton-Jacobi-Bellman equation can be transformed into a linear equation. The transformation is similar to the transformation used to relate the classical Hamilton-Jacobi equation to the Schr\\"odinger equation. As a result of the linearity, the usual backward computation can be replaced by a forward diffusion process, that can be computed by stochastic integration or by the evaluation of a path integral. It is shown, how in the deterministic limit the PMP formalism is recovered. The significance of the path integral approach is that it forms the basis for a number of efficient computational methods, such as MC sampling, the Laplace approximation and the variational approximation. We show the effectiveness of the first two methods in number of examples. Examples are given that show the qualitative difference between stochastic and deterministic control and the occurrence of symmetry breaking as a function of the noise.
DISPOSITION PATHS FOR ROCKY FLATS GLOVEBOXES: EVALUATING OPTIONS
Lobdell, D.; Geimer, R.; Larsen, P.; Loveland, K.
2003-02-27
The Kaiser-Hill Company, LLC has the responsibility for closure activities at the Rocky Flats Environmental Technology Site (RFETS). One of the challenges faced for closure is the disposition of radiologically contaminated gloveboxes. Evaluation of the disposition options for gloveboxes included a detailed analysis of available treatment capabilities, disposal facilities, and lifecycle costs. The Kaiser-Hill Company, LLC followed several processes in determining how the gloveboxes would be managed for disposition. Currently, multiple disposition paths have been chosen to accommodate the needs of the varying styles and conditions of the gloveboxes, meet the needs of the decommissioning team, and to best manage lifecycle costs. Several challenges associated with developing a disposition path that addresses both the radiological and RCRA concerns as well as offering the most cost-effective solution were encountered. These challenges included meeting the radiological waste acceptance criteria of available disposal facilities, making a RCRA determination, evaluating treatment options and costs, addressing void requirements associated with disposal, and identifying packaging and transportation options. The varying disposal facility requirements affected disposition choices. Facility conditions that impacted decisions included radiological and chemical waste acceptance criteria, physical requirements, and measurement for payment options. The facility requirements also impacted onsite activities including management strategies, decontamination activities, and life-cycle cost.
Nicholson, Paul T.
2009-01-01
Paul T. Nicholson. ) Pottery Production, Nicholson, UEE 2009Short Citation: Nicholson 2009, Pottery Production. UEE.Paul T. , 2009, Pottery Production. In Willeke Wendrich (
Veldmeijer, André J.
2009-01-01
294: fig. 15-3). Cordage Production, Veldmeijer, UEE 2009Short Citation: Veldmeijer, 2009, Cordage Production. UEE.André J. , 2009, Cordage Production. In Willeke Wendrich (
Shortland, Andrew
2009-01-01
40, pp. 162 - 186. Glass Production, Shortland, UEE 2009AINES Short Citation: Shortland 2009, Glass Production. UEE.Andrew, 2009, Glass Production. In Willeke Wendrich (ed. ),
Yevgeniy Kovchegov; Peter T. Otto
2015-08-11
In this paper, we present a novel extension to the classical path coupling method to statistical mechanical models which we refer to as aggregate path coupling. In conjunction with large deviations estimates, we use this aggregate path coupling method to prove rapid mixing of Glauber dynamics for a large class of statistical mechanical models, including models that exhibit discontinuous phase transitions which have traditionally been more difficult to analyze rigorously. The parameter region for rapid mixing for the generalized Curie-Weiss-Potts model is derived as a new application of the aggregate path coupling method.
Path Integral Solution of PT-/non-PT-Symmetric and non-Hermitian Morse Potential
Nalan Kandirmaz; Ramazan Sever
2008-12-14
Path integral solutions are obtained for the the PT-/non-PT-Symmetric and non-Hermitian Morse Potential. Energy eigenvalues and the corresponding wave functions are obtained.
Xing M. Wang
2009-01-30
In this article, we continue to investigate the application of Probability Bracket Notation (PBN). We show that, under Special Wick Rotation (caused by imaginary-time rotation), the Schrodinger equation of a conservative system and its path integral in Dirac rotation are simultaneously shifted to the master equation and its Euclidean path integral of an induced micro diffusion in PBN. Moreover, by extending to General Wick Rotation and using the anti-Hermitian wave-number operator, we execute the path integral in Dirac notation side-by-side with the Euclidean path integral in PBN, and derive the Euclidean Lagrangian of induced diffusions and Smoluchowski equation.
Connection between GRW "spontaneous collapse" and Mensky's "restricted path integral" models
Roman Sverdlov
2015-02-09
In this paper we will show how Mensky's model of "restricted path integrals" can be derived from GRW "spontaneous collapse" model.
Peakons arising as particle paths beneath small-amplitude water waves
Delia Ionescu-Kruse
2011-06-20
We present a new kind of particle path in constant vorticity water of finite depth, within the framework of small-amplitude waves.
Light absorption cell combining variable path and length pump
Prather, W.S.
1993-12-07
A device is described for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid there between and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data. 2 figures.
Light absorption cell combining variable path and length pump
Prather, William S. (2419 Dickey Rd., Augusta, GA 30906)
1993-01-01
A device for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid therebetween and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data.
Multi-Path Transportation Futures Study: Results from Phase 1
Phil Patterson, P.; Singh, M.; Plotkin, S.; Moore, J.
2007-03-09
Presentation reporting Phase 1 results, 3/9/2007. Projecting the future role of advanced drivetrains and fuels in the light vehicle market is inherently difficult, given the uncertainty (and likely volatility) of future oil prices, inadequate understanding of likely consumer response to new technologies, the relative infancy of several important new technologies with inevitable future changes in their performance and costs, and the importance — and uncertainty — of future government marketplace interventions (e.g., new regulatory standards or vehicle purchase incentives). The Multi-Path Transportation Futures (MP) Study has attempted to improve our understanding of this future role by examining several scenarios of vehicle costs, fuel prices, government subsidies, and other key factors. These are projections, not forecasts, in that they try to answer a series of “what if” questions without assigning probabilities to most of the basic assumptions.
Path Integral Confined Dirac Fermions in a Constant Magnetic Field
Abdeldjalil Merdaci; Ahmed Jellal; Lyazid Chetouani
2014-04-17
We consider Dirac fermion confined in harmonic potential and submitted to a constant magnetic field. The corresponding solutions of the energy spectrum are obtained by using the path integral techniques. For this, we begin by establishing a symmetric global projection, which provides a symmetric form for the Green function. Based on this, we show that it is possible to end up with the propagator of the harmonic oscillator for one charged particle. After some transformations, we derive the normalized wave functions and the eigenvalues in terms of different physical parameters and quantum numbers. By interchanging quantum numbers, we show that our solutions possed interesting properties. The density of current and the non-relativistic limit are analyzed where different conclusions are obtained.
Dynamics of assembly production flow
Ezaki, Takahiro; Nishinari, Katsuhiro
2015-01-01
Despite recent developments in management theory, maintaining a manufacturing schedule remains difficult because of production delays and fluctuations in demand and supply of materials. The response of manufacturing systems to such disruptions to dynamic behavior has been rarely studied. To capture these responses, we investigate a process that models the assembly of parts into end products. The complete assembly process is represented by a directed tree, where the smallest parts are injected at leaves and the end products are removed at the root. A discrete assembly process, represented by a node on the network, integrates parts, which are then sent to the next downstream node as a single part. The model exhibits some intriguing phenomena, including overstock cascade, phase transition in terms of demand and supply fluctuations, nonmonotonic distribution of stockout in the network, and the formation of a stockout path and stockout chains. Surprisingly, these rich phenomena result from only the nature of distr...
Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration
Shaw, Steven W.
Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration Absorbers A. S. Alsuwaiyan and S. W. Shaw Department of Mechanical Engineering Michigan State University, East Lansing, MI 48824, USA RUNNING HEADLINE: GENERAL PATH CPVAS. #12;Abstract Centrifugal pendulum vibration absorbers
Choosing Internet Paths with High Bulk Transfer Capacity Jacob A. Strauss
precisely, they would like to know the bulk transfer capacity (BTC) of a given path. This thesis compares the ability of several BTC estimation methods to predict which of a pair of Internet paths will have the higher measured BTC. Methods tested include TCP loss rate models, an available bandwidth measuring tool
Remarks on low-energy approximations for Feynman path integration on the sphere
Yoshihisa Miyanishi
2015-01-15
We shall define the oscillatory integrals by action integrals, Van Vleck determinant and Dewitt curvature. Our method employs action integrals along the shortest paths. We have the strong but not uniform convergence of time slicing Feynman path integrals for low energy functions.
Switching-path distribution in multidimensional systems H. B. Chan,1,* M. I. Dykman,2,
Dykman, Mark
Switching-path distribution in multidimensional systems H. B. Chan,1,* M. I. Dykman,2, and C; published 13 November 2008 We explore the distribution of paths followed in fluctuation-induced switching demonstration of the lack of time-reversal symmetry in switching of systems far from thermal equilibrium
Transmission Design at the National Level: Benefits, Risks and Possible Paths Forward
Electric Energy System #12;Transmission Design at the National Level: Benefits, Risks and Possible Paths Electricity Coordinating Council (WECC) Dale Osborn, Consulting Advisor, Transmission Management, MidwestTransmission Design at the National Level: Benefits, Risks and Possible Paths Forward Future Grid
LETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration
Orchard, Jeffery J.
and long-range inhibition connectivity can spontaneously gen- erate grid-cell-like activity patterns of Technology doi:10.1162/NECO_a_00701 #12;Oscillator-Based Path Integration Without Theta 549 and long-rangeLETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration Do
A critical exponent for shortest-path scaling in continuum percolation
Kroese, Dirk P.
A critical exponent for shortest-path scaling in continuum percolation Tim Brereton1 , Christian to study the scaling behavior of shortest path lengths in continuum percolation. These studies suggest that the critical exponent governing this scaling is the same for both continuum and lattice percolation. We use
Spin Path Integral And Quantum Mechanics In Rotating Reference of Frame
Tong Chern; Wu Ning; Yu Yue
2011-04-13
We developed a path integral formalism for the quantum mechanics in a rotating reference of frame, and proposed a spin path integral description for the spin degrees of freedom in it. We have also give some examples for the applications of our foramlism.
Path Following Using Transverse Feedback Linearization: Application to a Maglev Positioning System
Maggiore, Manfredi
. This methodology is applied to a five degree-of-freedom (5-DOF) magnetically levitated positioning system positioning stage, magnetic levitation. 1 Introduction The path following control problem (PFP) is chiefly, for instance, the simple problem of making a planar kinematic point-mass vehicle follow a path on the plane
The Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy
-consistent power plant design for a multi- beam induction linac, final focus and chamber propagationThe Heavy Ion Fusion Virtual National Laboratory The Heavy Ion Path to Fusion Energy Grant Logan Director Heavy-Ion Fusion Virtual National Laboratory Presented to FESAC Workshop on Development Paths
A NOTE ON SMALL ON-LINE RAMSEY NUMBERS FOR PATHS AND THEIR GENERALIZATION
Pralat, Pawel
A NOTE ON SMALL ON-LINE RAMSEY NUMBERS FOR PATHS AND THEIR GENERALIZATION PAWEL PRALAT Abstract. In this note, we consider the on-line Ramsey numbers R(Pn) for paths and their generalization. The standard on-line Ramsey game is played on an un- bounded set of vertices, whereas the new variant of the game we consider
PATHS, TREES, AND THE COMPUTATIONAL STRENGTH OF SOME RAMSEY-TYPE THEOREMS
Cholak, Peter
PATHS, TREES, AND THE COMPUTATIONAL STRENGTH OF SOME RAMSEY-TYPE THEOREMS A Dissertation Submitted Rights Reserved #12;PATHS, TREES, AND THE COMPUTATIONAL STRENGTH OF SOME RAMSEY-TYPE THEOREMS Abstract principles and computational strength. In particular, much work has been done on theorems similar to Ramsey
Constant Time Queries for Energy Efficient Paths in Multi-Hop Wireless Networks
Matijevic, Domagoj
Constant Time Queries for Energy Efficient Paths in Multi-Hop Wireless Networks Stefan Funke stations in such a way that approximately energy optimal paths can be retrieved in constant time, i. Keywords: Ad-Hoc and Sensor Networks, Routing, Power Control, Wireless LANs I. INTRODUCTION Ad hoc radio
EIS-0516: Clean Path Energy Center Project; San Juan County, New Mexico
Broader source: Energy.gov [DOE]
DOE’s Western Area Power Administration is preparing an EIS for the proposed interconnection of the Clean Path Energy Center Project to Western’s transmission system at the Shiprock Substation. The planned Clean Path Energy Center will consist of a 680 MW natural gas combined cycle power plant co-located with a 70 MW solar photovoltaic project.
Improved algorithms for reaction path following: Higher-order implicit algorithms
Schlegel, H. Bernhard
Improved algorithms for reaction path following: Higher-order implicit algorithms Carlos Gonzaleza (Received 13May 1991;accepted17June 1991) Eight new algorithms for reaction path following are presented or if accurate propertiessuch ascurvature and frequenciesare needed.3*4 Numerous algorithms exist for following
Tool path generation and 3D tolerance analysis for free-form surfaces
Choi, Young Keun
2005-08-29
in the tool paths. Several parts, for which the CC points are generated using the proposed algorithm, are machined using a three axes milling machine. As part of the validation process, the tool paths generated during machining are analyzed to compare...
The cost of moving optimally: kinematic path selection Dinant A. Kistemaker,1,2
Gribble, Paul
The cost of moving optimally: kinematic path selection Dinant A. Kistemaker,1,2 Jeremy D. Wong,3 June 2014 Kistemaker DA, Wong JD, Gribble PL. The cost of moving optimally: kinematic path selection. J through opti- mization of a cost function that takes into account control and/or dynamic variables
M. E. Ortiz; F. Vendrell
1998-06-19
A quantum mechanical path integral derivation is given of a thermal propagator in non-static Gui spacetime. The thermal nature of the propagator is understood in terms of homotopically non-trivial paths in the configuration space appropriate to tortoise coordinates. The connection to thermal emission from collapsing black holes is discussed.
CS 5050 -Program #5 -30 points Edit Distance as Shortest Path Problem
Allan, Vicki H.
CS 5050 - Program #5 - 30 points Edit Distance as Shortest Path Problem Part 1 Edit Distance (15 be helpful: Write the edit distance program using a shortest path solution. To save you a little time points) Problems in molecular biology involve finding the minimum number of edit steps which are required
Context-Based Pedestrian Path Prediction Julian Francisco Pieter Kooij1,2
Gavrila, Dariu M.
Context-Based Pedestrian Path Prediction Julian Francisco Pieter Kooij1,2 , Nicolas Schneider1.F.P.Kooij,D.M.Gavrila}@uva.nl Abstract. We present a novel Dynamic Bayesian Network for pedestrian path prediction in the intelligent) to anticipate changes in the pedestrian dynamics. Using computer vision, situational awareness is assessed
TGF'11 Moscow, September 28 -October 1, 2011 Geodesics and Shortest Paths Approach in Pedestrian
Rascle, Michel
TGF'11 Moscow, September 28 - October 1, 2011 Geodesics and Shortest Paths Approach in Pedestrian 15, 2011 M. Rascle (Universit´e de Nice) Geodesics and Shortest Paths in Pedestrian Motions October or refinement An example from Geography 3 Pedestrian Flow: Principle of a fully Eulerian description Assumptions
Will the Pedestrian Cross? Probabilistic Path Prediction Based on Learned Motion Features
Gavrila, Dariu M.
Will the Pedestrian Cross? Probabilistic Path Prediction Based on Learned Motion Features Christoph, The Netherlands Abstract. Future vehicle systems for active pedestrian safety will not only re- quire a high, we present a system for pedestrian action classification (walking vs. stopping) and path prediction
Lazaridis, Themis
Reaction paths and free energy profiles for conformational transitions: An internal coordinate for the determination of transition states and reaction paths for conformational transitions. The method makes use of adiabatic energy surfaces in the space of "essential" degrees of freedom of the molecule. The reduced
USING JET ROUTES TO MODEL PATH RE-ROUTING IN THE NATIONAL AIRSPACE SYSTEM
Malloy, Brian
USING JET ROUTES TO MODEL PATH RE-ROUTING IN THE NATIONAL AIRSPACE SYSTEM Brian A. Malloy #3; Dean Class Diagram, Object-oriented, Floyd's algorithm, Jet routes, Fix, Airport Fix, National Airspace that the majority of air traÆc must negotiate. These paths, or jet routes, intersect at navigation points or #12;xes
Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths
Skeel, Robert
Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths corrected.S.A. Abstract The calculation of a minimum free energy path can be considered as a two-point boundary value box solvers. The second paragraph of Section 1 is corrected. Because free energy is defined in terms
Schofield, Jeremy
Quantum free-energy differences from nonequilibrium path integrals. II. Convergence properties July 2008; published 2 October 2008 Nonequilibrium path-integral methods for computing quantum free-energy with the purpose of establishing the convergence properties of the work distribution and free energy as the number
A Heuristic Approach to Finding Diverse Short Paths Caleb Voss, Mark Moll, and Lydia E. Kavraki
Kavraki, Lydia E.
Abstract-- We present an algorithm that seeks to find a set of diverse, short paths through a roadmap graph a precomputed roadmap of the environment is partially invalidated by some change, for example, relocation to checking or reconstructing the entire roadmap. We describe a formal definition of path set diversity
Daniel, Rosenfeld
Decomposing aerosol cloud radiative effects into cloud cover, liquid water path and Twomey December 2013 A method for separating the three components of the marine stratocumulus (MSC) aerosol cloud interactions radiative effects, i.e., the cloud cover, liquid water path (LWP) and cloud drop radius (Twomey
Theory of extreme correlations using canonical Fermions and path integrals
Shastry, B. Sriram, E-mail: sriram@physics.ucsc.edu
2014-04-15
The t–J model is studied using a novel and rigorous mapping of the Gutzwiller projected electrons, in terms of canonical electrons. The mapping has considerable similarity to the Dyson–Maleev transformation relating spin operators to canonical Bosons. This representation gives rise to a non Hermitian quantum theory, characterized by minimal redundancies. A path integral representation of the canonical theory is given. Using it, the salient results of the extremely correlated Fermi liquid (ECFL) theory, including the previously found Schwinger equations of motion, are easily rederived. Further, a transparent physical interpretation of the previously introduced auxiliary Greens function and the ‘caparison factor’, is obtained. The low energy electron spectral function in this theory, with a strong intrinsic asymmetry, is summarized in terms of a few expansion coefficients. These include an important emergent energy scale ?{sub 0} that shrinks to zero on approaching the insulating state, thereby making it difficult to access the underlying very low energy Fermi liquid behavior. The scaled low frequency ECFL spectral function, related simply to the Fano line shape, has a peculiar energy dependence unlike that of a Lorentzian. The resulting energy dispersion obtained by maximization is a hybrid of a massive and a massless Dirac spectrum E{sub Q}{sup ?}??Q??(?{sub 0}{sup 2}+Q{sup 2}), where the vanishing of Q, a momentum type variable, locates the kink minimum. Therefore the quasiparticle velocity interpolates between (??1) over a width ?{sub 0} on the two sides of Q=0, implying a kink there that strongly resembles a prominent low energy feature seen in angle resolved photoemission spectra (ARPES) of cuprate materials. We also propose novel ways of analyzing the ARPES data to isolate the predicted asymmetry between particle and hole excitations. -- Highlights: •Spectral function of the Extremely Correlated Fermi Liquid theory at low energy. •Electronic origin of low energy kinks in energy dispersion. •Non Hermitian representation of Gutzwiller projected electrons. •Analogy with Dyson–Maleev representation of spins. •Path integral formulation of extremely correlated electrons.
Towards More Transmission Asset Utilization through Real-time Path Rating
Diao, Ruisheng; Huang, Zhenyu; Jin, Chunlian; Vyakaranam, Bharat GNVSR; Jin, Shuangshuang; Makarov, Yuri V.
2013-10-21
Ratings of transmission paths, typically determined in an offline environment, are static and tend to be conservative, leading to underutilization of transmission assets, higher costs of system operation and renewable energy integration, and lower efficiency and savings. With the ever-increasing transmission congestion costs and new challenges from renewable integration, increasing transfer capacity of existing transmission lines is essential. Real-time path rating provides a promising approach to enabling additional power transfer capability and fully utilizing transfer capability. In this paper, the feasibility of real-time path rating is investigated. Several promising technologies to achieve real-time path rating are discussed. Various benefits that can be expected from real-time path rating, such as increased transfer capability and reduced total generation cost, are demonstrated through simulations conducted on the Western Electricity Coordinating Council system model.
About a possible path towards the reverse engineering of quantum mechanics
Alberto Ottolenghi
2011-11-17
An out of the box intellectual path exploring the foundations of quantum mechanics is discussed in some detail, in order to clarify why a possibly different way to look at the relevant fundamental questions can be identified and can support further research. Two key concepts arise. (1) Einstein critics to quantum mechanics could be taken seriously, but ironically, in order to really do so, one would have to take seriously also some of Lorentz critics to special relativity - both in a possibly more modern way; such interconnection possibly having been a blocking factor to openly discuss some of the cross implications of alternative views about quantum mechanics to date. (2) The probabilistic interpretation is a by-product of (a) quantum evolution equations, (b) conservation laws for the combination of measuring system and measured object and (c) persistency of calibration of the measuring system - as such there is no intellectual conflict whatsoever between hidden variables theories and probabilistic interpretation, provided we consider multicomponent hidden variable models and we allow for the existence of an underlying network. The implications of such concepts, in particular for the development of a microscopic quantisation program, are heuristically discussed or preliminarily explored.
Spin-neurons: A possible path to energy-efficient neuromorphic computers
Sharad, Mrigank; Fan, Deliang; Roy, Kaushik
2013-12-21
Recent years have witnessed growing interest in the field of brain-inspired computing based on neural-network architectures. In order to translate the related algorithmic models into powerful, yet energy-efficient cognitive-computing hardware, computing-devices beyond CMOS may need to be explored. The suitability of such devices to this field of computing would strongly depend upon how closely their physical characteristics match with the essential computing primitives employed in such models. In this work, we discuss the rationale of applying emerging spin-torque devices for bio-inspired computing. Recent spin-torque experiments have shown the path to low-current, low-voltage, and high-speed magnetization switching in nano-scale magnetic devices. Such magneto-metallic, current-mode spin-torque switches can mimic the analog summing and “thresholding” operation of an artificial neuron with high energy-efficiency. Comparison with CMOS-based analog circuit-model of a neuron shows that “spin-neurons” (spin based circuit model of neurons) can achieve more than two orders of magnitude lower energy and beyond three orders of magnitude reduction in energy-delay product. The application of spin-neurons can therefore be an attractive option for neuromorphic computers of future.
World oil flow slips in 1991 amid Mideast, U. S. S. R. woes
Beck, R.J.
1992-03-09
World crude oil production slipped 0.9% in 1991 to average 59,964 million b/d. This paper reports that production declines related to war damage in Kuwait, United Nations sanctions on exports from Iraq, and oil sector woes in the crumbling U.S.S.R. were almost offset by higher production from other members of the Organization of Petroleum Exporting Countries. OPEC crude production rose 0.6% in 1991 to average 23.425 million b/d, and non-OPEC output fell 1.9% to average 36.539 million b/d in 1991. Excluding the U.S.S.R., non-OPEC production moved up 1.5% to average 26.239 million b/d. World demand inched up about 200,000 b/d, estimates International Energy Agency, and IEA data show about 300,000 b/d was added to stocks in 1991. World crude prices started 1991 at their highest level, then fell off to average $17.82/bbl, down 16.5% from 1990 levels. Meantime, a slight increase in demand is predicted for 1992, and price stability again hinges on OPEC's ability to limit production.
A Pilot Plant: The Fastest Path to Commercial Fusion Energy
Robert J. Goldston
2010-03-03
Considerable effort has been dedicated to determining the possible properties of a magneticconfinement fusion power plant, particularly in the U.S.1, Europe2 and Japan3. There has also been some effort to detail the development path to fusion energy, particularly in the U.S.4 Only limited attention has been given, in Japan5 and in China6, to the options for a specific device to form the bridge from the International Thermonuclear Experimental Reactor, ITER, to commercial fusion energy. Nor has much attention been paid, since 2003, to the synergies between magnetic and inertial fusion energy development. Here we consider, at a very high level, the possibility of a Qeng ? 1 Pilot Plant, with linear dimensions ~ 2/3 the linear dimensions of a commercial fusion power plant, as the needed bridge. As we examine the R&D needs for such a system we find significant synergies between the needs for the development of magnetic and inertial fusion energy.
Methanol Along the Path from Envelope to Protoplanetary Disc
Drozdovskaya, Maria N; Visser, Ruud; Harsono, Daniel; van Dishoeck, Ewine F
2014-01-01
Interstellar methanol is considered to be a parent species of larger, more complex organic molecules. A physicochemical simulation of infalling parcels of matter is performed for a low-mass star-forming system to trace the chemical evolution from cloud to disc. An axisymmetric 2D semi-analytic model generates the time-dependent density and velocity distributions, and full continuum radiative transfer is performed to calculate the dust temperature and the UV radiation field at each position as a function of time. A comprehensive gas-grain chemical network is employed to compute the chemical abundances along infall trajectories. Two physical scenarios are studied, one in which the dominant disc growth mechanism is viscous spreading, and another in which continuous infall of matter prevails. The results show that the infall path influences the abundance of methanol entering each type of disc, ranging from complete loss of methanol to an enhancement by a factor of > 1 relative to the prestellar phase. Critical ch...
High order Chin actions in path integral Monte Carlo
Sakkos, K.; Casulleras, J.; Boronat, J.
2009-05-28
High order actions proposed by Chin have been used for the first time in path integral Monte Carlo simulations. Contrary to the Takahashi-Imada action, which is accurate to the fourth order only for the trace, the Chin action is fully fourth order, with the additional advantage that the leading fourth-order error coefficients are finely tunable. By optimizing two free parameters entering in the new action, we show that the time step error dependence achieved is best fitted with a sixth order law. The computational effort per bead is increased but the total number of beads is greatly reduced and the efficiency improvement with respect to the primitive approximation is approximately a factor of 10. The Chin action is tested in a one-dimensional harmonic oscillator, a H{sub 2} drop, and bulk liquid {sup 4}He. In all cases a sixth-order law is obtained with values of the number of beads that compare well with the pair action approximation in the stringent test of superfluid {sup 4}He.
Anomaly Mediated Gaugino Mass and Path-Integral Measure
Keisuke Harigaya; Masahiro Ibe
2014-09-16
In recent years, there have been controversy concerning the anomaly mediated gaugino mass in the superspace formalism of supergravity. In this paper, we reexamine the gaugino mass term in this formalism by paying particular attention to symmetry which controls gaugino masses in supergravity. We first discuss super-Diffeomorphism invariance of path-integral measures of charged superfields. As we will show, the super-Diffeomorphism invariant measure is not invariant under a super-Weyl transformation, which is the origin of the anomaly mediated gaugino mass. We show how the anomaly mediated gaugino mass is expressed as a local operator in a Wilsonian effective action in a super-Diffeomorphism covariant way. We also obtain a gaugino mass term independent of the gauge choice of the fictitious super-Weyl symmetry in the super-Weyl compensator formalism, which reproduces the widely accepted result. Besides, we discuss how to reconcile the gaugino mass term in the local Wilsonian effective action and the gaugino mass term appearing in a non-local 1PI quantum effective action.
GRASP WITH PATH-RELINKING FOR THE MULTI-PLANT ...
2008-01-21
Jan 21, 2008 ... dependent demand for its components, whose production or ... tion centers are independent, i.e., the plants individually supply the items demanded ... In computational tests, the authors observe that the mean gap of their.
Howieson, William B
2008-01-01
In 1996, Professor Robert J House published a reformulated Path-Goal Theory of Work Unit Leadership, based on his earlier 1971 and 1974 theories. Path-goal leadership attempts to explain the impact that leader behaviour ...
Optimal biodiesel production using bioethanol: Towards process integration.
Grossmann, Ignacio E.
Optimal biodiesel production using bioethanol: Towards process integration. Kristen Severson using bioethanol from algae following four different transesterification paths: alkali, enzymatic@cmu.edu (I.E. Grossmann) #12;1.-Introduction. Biodiesel and bioethanol are the most important liquid biofuels
Feed drive modelling for the simulation of tool path tracking in multi-axis High Speed Machining
Prévost, David; Lartigue, Claire; Dumur, Didier
2011-01-01
Within the context of High Speed Machining, it is essential to manage the trajectory generation to achieve both high surface quality and high productivity. As feed drives are one part of the set Machine tool - Numerical Controller, it is necessary to improve their performances to optimize feed drive dynamics during trajectory follow up. Hence, this paper deals with the modelling of the feed drive in the case of multi axis machining. This model can be used for the simulation of axis dynamics and tool-path tracking to tune parameters and optimize new frameworks of command strategies. A procedure of identification based on modern NC capabilities is presented and applied to industrial HSM centres. Efficiency of this modelling is assessed by experimental verifications on various representative trajectories. After implementing a Generalized Predictive Control, reliable simulations are performed thanks to the model. These simulations can then be used to tune parameters of this new framework according to the tool-pat...
Non-intersecting squared Bessel paths: critical time and double scaling limit
A. B. J. Kuijlaars; A. Martinez-Finkelshtein; F. Wielonsky
2010-11-04
We consider the double scaling limit for a model of $n$ non-intersecting squared Bessel processes in the confluent case: all paths start at time $t=0$ at the same positive value $x=a$, remain positive, and are conditioned to end at time $t=1$ at $x=0$. After appropriate rescaling, the paths fill a region in the $tx$--plane as $n\\to \\infty$ that intersects the hard edge at $x=0$ at a critical time $t=t^{*}$. In a previous paper (arXiv:0712.1333), the scaling limits for the positions of the paths at time $t\
Exact Path-Integral Representations for the $T$-Matrix in Nonrelativistic Potential Scattering
R. Rosenfelder
2011-03-24
Several path integral representations for the $T$-matrix in nonrelativistic potential scattering are given which produce the complete Born series when expanded to all orders and the eikonal approximation if the quantum fluctuations are suppressed. They are obtained with the help of "phantom" degrees of freedom which take away explicit phases that diverge for asymptotic times. Energy conservation is enforced by imposing a Faddeev-Popov-like constraint in the velocity path integral. An attempt is made to evaluate stochastically the real-time path integral for potential scattering and generalizations to relativistic scattering are discussed.
Balasubramonian, Rajeev
Power with Dynamic Critical Path Information John S. Seng Eric S. Tune Dean M. Tullsen Dept. of Computer to increase mi- croprocessor performance. Critical path information can also be used in processors to achieve a better balance of power and performance. This paper uses the output of a dynamic critical path predictor
The Problem With Critical Path Scheduling Algorithms C. L. McCreary, M. A. Cleveland, A. A. Khan
The Problem With Critical Path Scheduling Algorithms C. L. McCreary, M. A. Cleveland, A. A. Khan must be found. Several critical path heuristics have been proposed, but these must be empirically tested to see if their solutions are adequate. This paper examines the performance of four critical path
Hollingsworth, Jeffrey K.
the critical path profile of the execution of message passing and shared-memory parallel programs. Our algorithm permits starting or stopping the critical path computation during program execution and reporting intermediate values. We also present an online algorithm to compute a variant of critical path, called critical
Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2
Kais, Sabre
Quantum criticality for few-body systems: Path-integral approach Ricardo A. Sauerwein1,2 and Sabre 2001 We present the path-integral approach to treat quantum phase transitions and critical phenomena in space time must preserve the scaling invariance of Brownian paths, we show that the mapped classical
Mi, Chunting "Chris"
Investigation of path dependence in commercial lithium-ion cells for pure electric bus applications dependence of aging of lithium ion batteries. Considered the conditions of path dependence specific October 2014 Available online 13 October 2014 Keywords: Lithium-ion battery Path dependence Thermal aging
On selection of candidate paths for proportional routing q Srihari Nelakuditi a,*, Zhi-Li Zhang b
Minnesota, University of
On selection of candidate paths for proportional routing q Srihari Nelakuditi a,*, Zhi-Li Zhang b on the core routers. On the other hand, proportional routing schemes proportion incoming flows among a set of candidate paths. Two key questions that arise under proportional routing are how to select candidate paths
Van Den Eijnden, Eric
On-the-fly string method for minimum free energy paths calculation Luca Maragliano *, Eric Vanden and simplified version of the string method in collective variables for computing minimum free energy paths) the minimum free energy path (MFEP) plays an important role. Given a set of collective variables to describe
A*-Based Path Planning for an Unmanned Aerial and Ground Vehicle Team in a Radio Repeating Operation
Kochersberger, Kevin
A*-Based Path Planning for an Unmanned Aerial and Ground Vehicle Team in a Radio Repeating Krawiec #12;A*-Based Path Planning for an Unmanned Aerial and Ground Vehicle Team in a Radio Repeating. Therefore, this thesis incorporates an unmanned aerial vehicle as a radio repeating node and presents a path
Opportunities to Parallelize Path Planning Algorithms for Autonomous Underwater Vehicles
Kremer, Ulrich
, Germany Email: mike.eichhorn@tu-ilmenau.de Ulrich Kremer Dept. of Computer Science Rutgers University. energy tradeoffs that can be exploited in energy- constrained environments such as battery operated 2005, when the series production of multi core processors started. Before then, writing parallel
Development of a potential field estimator for a path-planning application using neural networks
Smith, Darin William
1997-01-01
This thesis presents the development of a potential field estimator for a locally constrained autonomous path-planning application. The potential field estimator was developed using back-propagation neural networks, which ...
Spatial association between the locations of roots and water flow paths in highly structured soil
Gardiner, Nathan Thomas
2005-02-17
relative to the location of water flow paths is important in understanding how plants obtain nutrients and water for growth, and it would also be of considerable importance in phytoremediation research and research into the prevention of groundwater...
UAV PATH FOLLOWING FOR CONSTANT LINE-OF-SIGHT Rolf Rysdyk,
UAV PATH FOLLOWING FOR CONSTANT LINE-OF-SIGHT Rolf Rysdyk, University of Washington, Seattle, WA to a method to model `helmsman behavior'. The UAV control problem typically involves: air- speed, aerodynamic
Mukamel, Shaul
Path integral formulation of retardation effects in nonlinear optics Vladimir Chernyaka) and Shaul;accepted4 October 1993) The signaturesof retardation in nonlinear optical susceptibilitiesare studiedby optical signalsare usually'calculatedby first calculating a nonlinear susceptibility definedby expanding
Reconstructing phonon mean-free-path contributions to thermal conductivity using nanoscale membranes
Cuffe, John
Knowledge of the mean-free-path distribution of heat-carrying phonons is key to understanding phonon-mediated thermal transport. We demonstrate that thermal conductivity measurements of thin membranes spanning a wide ...
Sampling-based coverage path planning for complex 3D structures
Englot, Brendan J
2012-01-01
Path planning is an essential capability for autonomous robots, and many applications impose challenging constraints alongside the standard requirement of obstacle avoidance. Coverage planning is one such task, in which a ...
Next Generation Nuclear Plant Project Technology Development Roadmaps: The Technical Path Forward
John Collins
2009-01-01
This document presents the Next Generation Nuclear Plant (NGNP) Systems, Subsystems, and Components, establishes a baseline for the current technology readiness status, and provides a path forward to achieve increasing levels of technical maturity.
Wright, Paul K; Dornfeld, David; Sundararajan, V.; Misra, Debananda
2007-01-01
IN THE CYBERCUT PROCESS PLANNING PIPELINE Paul K. Wright,stage of the process planning will reject any surfaces withfrom the database. Tool path planning has been done on the ‘
Broader source: Energy.gov [DOE]
Presentation given by Delphi Automotive at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about ePATHS - electrical PCM...
Minimum Cost Path Problem for Plug-in Hybrid Electric Vehicles
Feb 4, 2014 ... Minimum Cost Path Problem for Plug-in Hybrid Electric Vehicles. Okan Arslan ( okan.arslan ***at*** bilkent.edu.tr) Baris Yildiz (baris.yildiz ...
Conceptual Soundness, Metric Development, Benchmarking, and Targeting for PATH Subprogram Evaluation
Mosey. G.; Doris, E.; Coggeshall, C.; Antes, M.; Ruch, J.; Mortensen, J.
2009-01-01
The objective of this study is to evaluate the conceptual soundness of the U.S. Department of Housing and Urban Development (HUD) Partnership for Advancing Technology in Housing (PATH) program's revised goals and establish and apply a framework to identify and recommend metrics that are the most useful for measuring PATH's progress. This report provides an evaluative review of PATH's revised goals, outlines a structured method for identifying and selecting metrics, proposes metrics and benchmarks for a sampling of individual PATH programs, and discusses other metrics that potentially could be developed that may add value to the evaluation process. The framework and individual program metrics can be used for ongoing management improvement efforts and to inform broader program-level metrics for government reporting requirements.
Common-path interference and oscillatory Zener tunneling in bilayer graphene p-n junctions
Nandkishore, Rahul Mahajan
Interference and tunneling are two signature quantum effects that are often perceived as the yin and yang of quantum mechanics: a particle simultaneously propagating along several distinct classical paths versus a particle ...
Electron mean free path from angle-dependent photoelectron spectroscopy of aerosol particles
Goldmann, Maximilian; Miguel-Sánchez, Javier; West, Adam H. C.; Yoder, Bruce L.; Signorell, Ruth
2015-06-14
We propose angle-resolved photoelectron spectroscopy of aerosol particles as an alternative way to determine the electron mean free path of low energy electrons in solid and liquid materials. The mean free path is obtained from fits of simulated photoemission images to experimental ones over a broad range of different aerosol particle sizes. The principal advantage of the aerosol approach is twofold. First, aerosol photoemission studies can be performed for many different materials, including liquids. Second, the size-dependent anisotropy of the photoelectrons can be exploited in addition to size-dependent changes in their kinetic energy. These finite size effects depend in different ways on the mean free path and thus provide more information on the mean free path than corresponding liquid jet, thin film, or bulk data. The present contribution is a proof of principle employing a simple model for the photoemission of electrons and preliminary experimental data for potassium chloride aerosol particles.
Stay on marked paths to avoid poison ivy. Watch young children carefully around river and creeks.
Shyy, Wei
Caution · Stay on marked paths to avoid poison ivy. · Watch young children carefully around river or outdoor cooking are not permitted. Poison Ivy Hours · Trails and gardens open 8 am to dusk. · Conservatory
CFD based rotordynamic coefficients for labyrinth seals and impeller leakage paths
Bhattacharya, Avijit
1997-01-01
accurately using simple flow model like bulk flow. CFD approach is employed since it can accurately predict and capture recirculating zones using proper mesh distribution. The Impeller Leakage paths and Labyrinth Seals, typically, have a recirculation zone...
Hoskinson, Reed L. (Rigby, ID); Svoboda, John M. (Idaho Falls, ID); Bauer, William F. (Idaho Falls, ID); Elias, Gracy (Idaho Falls, ID)
2008-05-06
A method and apparatus is provided for monitoring a flow path having plurality of different solid components flowing therethrough. For example, in the harvesting of a plant material, many factors surrounding the threshing, separating or cleaning of the plant material and may lead to the inadvertent inclusion of the component being selectively harvested with residual plant materials being discharged or otherwise processed. In accordance with the present invention the detection of the selectively harvested component within residual materials may include the monitoring of a flow path of such residual materials by, for example, directing an excitation signal toward of flow path of material and then detecting a signal initiated by the presence of the selectively harvested component responsive to the excitation signal. The detected signal may be used to determine the presence or absence of a selected plant component within the flow path of residual materials.
Is a curved flight path in SAR better than a straight one?
Plamen Stefanov
2012-12-10
model of this is to project the curve on the plane, call it ?; then the data are integrals ..... projections to the base falls on ? (points right below the plane's path, i.e.,.
Programmed path : the conceptual re-enactment of a Charlestown warehouse and dock
Reeves, Sarah Rundquist
2009-01-01
Conceptually re-defining the role of a 100-year-old waterfront brick and timber warehouse structure, it is turned inside-out : interior becomes path. Programmatic functions imitate the physical characteristics of a conceptual ...
POSTER: Secure Path Verification using Mobility-Differentiated ToA
Lenders, Vincent
POSTER: Secure Path Verification using Mobility-Differentiated ToA Matthias Schäfer Vincent Lenders@cs.uni-kl.de vincent.lenders@armasuisse.ch jschmitt@cs.uni-kl.de ABSTRACT In this poster, we generalize the problem
Region-based Approach for Determining the Optimal Path Using PSO
Nair, Dr T R Gopalakrishnan; Shetty, Ms Deepthi D; Hegde, Ms Prapthi; Hegde, Ms Anusha
2011-01-01
Many research works have been carried out recently to find the optimal path in network routing. Among them the evolutionary algorithms is an area where work is carried out extensively. We in this paper, have used PSO for finding the optimal path and the concept of region based network is introduced along with the use of indirect encoding. A comparative study of genetic algorithm (GA) and particle swarm optimization (PSO) is carried out, and it was found that PSO performed better than GA.
Turchi, P E; Kaufman, L; Fluss, M J
2008-11-10
The current specifications of the LLNL fusion-fission hybrid proposal, namely LIFE, impose severe constraints on materials, and in particular on the nuclear fissile or fertile nuclear fuel and its immediate environment. This constitutes the focus of the present report with special emphasis on phase formation and phase transformations of the transmutation fuel and their consequences on particle and pebble thermal, chemical and mechanical integrities. We first review the work that has been done in recent years to improve materials properties under the Gen-IV project, and with in particular applications to HTGR and MSR, and also under GNEP and AFCI in the USA. Our goal is to assess the nuclear fuel options that currently exist together with their issues. Among the options, it is worth mentioning TRISO, IMF, and molten salts. The later option will not be discussed in details since an entire report is dedicated to it. Then, in a second part, with the specific LIFE specifications in mind, the various fuel options with their most critical issues are revisited with a path forward for each of them in terms of research, both experimental and theoretical. Since LIFE is applicable to very high burn-up of various fuels, distinctions will be made depending on the mission, i.e., energy production or incineration. Finally a few conclusions are drawn in terms of the specific needs for integrated materials modeling and the in depth knowledge on time-evolution thermochemistry that controls and drastically affects the performance of the nuclear materials and their immediate environment. Although LIFE demands materials that very likely have not yet been fully optimized, the challenge are not insurmountable and a well concerted experimental-modeling effort should lead to dramatic advances that should well serve other fission programs such as Gen-IV, GNEP, AFCI as well as the international fusion program, ITER.
Quantum correlation of path-entangled two-photon states in waveguide arrays with defects
Dou, Yiling; Xu, Lei; Han, Bin; Bo, Fang; Xu, Jingjun; Zhang, Guoquan, E-mail: zhanggq@nankai.edu.cn [The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457 (China)] [The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin 300457 (China)
2014-04-15
We study the quantum correlation of path-entangled states of two photons in coupled one-dimensional waveguide arrays with lattice defects. Both off-diagonal and diagonal defects are considered, which show different effects on the quantum correlation of path-entangled two-photon states. Two-photon bunching or anti-bunching effects can be observed and controlled. The two photons are found to have a tendency to bunch at the side lobes with a repulsive off-diagonal defect, and the path-entanglement of the input two-photon state can be preserved during the propagation. We also found that defect modes may play an important role on the two-photon correlation of path-entangled states in the waveguide arrays. Due to the quantum interference effect, intriguing evolution dynamics of the two-photon correlation matrix elements with oscillation frequencies being either twice of or the same as that of a classical light wave, depending on the position of the correlation matrix element, is observed. Our results show that it is possible to manipulate the two-photon correlation properties of path-entangled states in waveguide arrays with lattice defects.
Community of Practice: A Path to Strategic Learning
Nancy M. Carlson
2003-04-01
To explore the concept of community of practice, the research initially concentrates on a strategic business process in a research and applied engineering laboratory discovering essential communication tools and processes needed to cultivate a high functioning cross-disciplinary team engaged in proposal preparation. Qualitative research in the human ecology of the proposal process blends topic-oriented ethnography and grounded theory and includes an innovative addition to qualitative interviewing, called meta-inquiry. Meta-inquiry uses an initial interview protocol with a homogeneous pool of informants to enhance the researcher's sensitivity to the unique cultures involved in the proposal process before developing a formal interview protocol. In this study the preanalysis process uses data from editors, graphic artists, text processors, and production coordinators to assess, modify, enhance, and focus the formal interview protocol with scientists, engineers, and technical managers-the heterogeneous informants. Thus this human ecology-based interview protocol values homogeneous and heterogeneous informant data and acquires data from which concepts, categories, properties, and both substantive and formal theory emerges. The research discovers the five essential processes of owning, visioning, reviewing, producing, and contributing for strategic learning to occur in a proposal community of practice. The apprenticeship, developmental, and nurturing perspectives of adult learning provide the proposal community of practice with cohesion, interdependence, and caring, while core and boundary practices provide insight into the tacit and explicit dimensions of the proposal process. By making these dimensions explicit, the necessary competencies, absorptive capacity, and capabilities needed for strategic learning are discovered. Substantive theory emerges and provides insight into the ability of the proposal community of practice to evolve, flourish, and adapt to the strategic advantage of the laboratory. The substantive theory explores the dimensions of owning, visioning, reviewing, producing, and contributing and their interrelationship to community learning dynamics. Through dialogue, creative tension, and imagination, the proposal community of practice focuses on actionable goals linked by proactively participating in practice, creating possibilities, evaluating and enhancing potential, producing a valued product, and confirming strategic value. Lastly, a formal theory emerges linking competency-capacity-capability, cohesion, interdependence, and caring as essential attributes of strategic learning communities.
2014-09-01
This 2-page fact sheet provides a brief introduction to hydrogen production technologies. Intended for a non-technical audience, it explains how different resources and processes can be used to produce hydrogen. It includes an overview of research goals as well as “quick facts” about hydrogen energy resources and production technologies.
Baker, K L; Stappaerts, E A; Gavel, D; Tucker, J; Silva, D A; Wilks, S C; Olivier, S S; Olsen, J
2004-08-25
An adaptive optical system used to correct horizontal beam propagation paths has been demonstrated. This system utilizes an interferometric wave-front sensor and a large-actuator-number MEMS-based spatial light modulator to correct the aberrations incurred by the beam after propagation along the path. Horizontal path correction presents a severe challenge to adaptive optics systems due to the short atmospheric transverse coherence length and the high degree of scintillation incurred by laser propagation along these paths. Unlike wave-front sensors that detect phase gradients, however, the interferometric wave-front sensor measures the wrapped phase directly. Because the system operates with nearly monochromatic light and uses a segmented spatial light modulator, it does not require that the phase be unwrapped to provide a correction and it also does not require a global reconstruction of the wave-front to determine the phase as required by gradient detecting wave-front sensors. As a result, issues with branch points are eliminated. Because the atmospheric probe beam is mixed with a large amplitude reference beam, it can be made to operate in a photon noise limited regime making its performance relatively unaffected by scintillation. The MEMS-based spatial light modulator in the system contains 1024 pixels and is controlled to speeds in excess of 800 Hz, enabling its use for correction of horizontal path beam propagation. In this article results are shown of both atmospheric characterization with the system and open loop horizontal path correction of a 1.53 micron laser by the system. To date Strehl ratios of greater than 0.5 have been achieved.
Self-consistent Green's functions calculation of the nucleon mean-free path
A. Rios; V. Soma
2011-12-22
The extension of Green's functions techniques to the complex energy plane provides access to fully dressed quasi-particle properties from a microscopic perspective. Using self-consistent ladder self-energies, we find both spectra and lifetimes of such quasi-particles in nuclear matter. With a consistent choice of the group velocity, the nucleon mean-free path can be computed. Our results indicate that, for energies above 50 MeV at densities close to saturation, a nucleon has a mean-free path of 4 to 5 femtometers.
Path-Integral Derivation of the Non-relativistic Scale Anomaly
Chris L. Lin; Carlos. R. Ordonez
2015-04-21
In this paper we calculate the scale anomaly for a quantum field theoretic 2D-nonrelativistic Bose gas with contact interactions using Fujikawa's method, both in vacuum and in many-body systems. The use of path integrals for these problems is novel and motivated by a recently developed path-integral framework for addressing questions about scaling in these systems. A natural class of regulators is found that produces the correct value of the anomaly traditionally calculated via other methods, e.g., diagrammatically via the beta function.
Hot gas path analysis and data evaluation of the performance parameters of a gas turbine
Hanawa, David Allen
1974-01-01
SCIENCE December 1974 Major Subject: Mechanical Engineering HOT GAS PATH ANALYSIS AND DATA EVALUATION OF THE PERFORMANCE PARAMETERS OF A GAS TURBINE A Thesis by DAVID AI, LEN HANAWA Approved as to style and content by: PfnA J 7 EY3 .j (Chairman... of -Committee) zr (Head of Depai'tment) Member) /i ~E" Egg(JQJ a g i (Member) (Member) December l974 ABSTRACT Ho Gas Path Ana'ysis and Data Evaluation o. the Performance Parameters of a Gas Turbine (December 1974) David Allen Hanawa, B. S. , Texas A...
Characterizing scientific production and consumption in Physics
Zhang, Qian; Goncalves, Bruno; Ciulla, Fabio; Vespignani, Alessandro
2013-01-01
We analyze the entire publication database of the American Physical Society generating longitudinal (50 years) citation networks geolocalized at the level of single urban areas. We define the knowledge diffusion proxy, and scientific production ranking algorithms to capture the spatio-temporal dynamics of Physics knowledge worldwide. By using the knowledge diffusion proxy we identify the key cities in the production and consumption of knowledge in Physics as a function of time. The results from the scientific production ranking algorithm allow us to characterize the top cities for scholarly research in Physics. Although we focus on a single dataset concerning a specific field, the methodology presented here opens the path to comparative studies of the dynamics of knowledge across disciplines and research areas
Fuel Cell Technologies Publication and Product Library (EERE)
This 2-page fact sheet provides a brief introduction to hydrogen production technologies. Intended for a non-technical audience, it explains how different resources and processes can be used to produ
(Quickly) Testing the Tester via Path Coverage Laboratory for Reliable Software
Groce, Alex David
gener- ation are increasingly accepted in the software engineering community. Random testing [14, 10, 3(Quickly) Testing the Tester via Path Coverage Alex Groce Laboratory for Reliable Software Jet testing framework may grow to a point that the tester itself becomes a significant software artifact
Path Selection and Coordination for Multiple Robots via Nash Equilibria Steven M. LaValle
Hutchinson, Seth
Path Selection and Coordination for Multiple Robots via Nash Equilibria Steven M. LaValle lavalle robot, together in a game-theoretic contexi in which maximal Nash equilibria represent the favor- able of the mazimal Nash equilibria for a given problem is presented, along with several computed examples for two
Stochastic Shortest Path MDPs with Dead Ends Andrey Kolobov Mausam Daniel S. Weld
Mausam
Stochastic Shortest Path MDPs with Dead Ends Andrey Kolobov Mausam Daniel S. Weld {akolobov, mausam, weld}@cs.washington.edu Dept of Computer Science and Engineering University of Washington Seattle, USA algorithms that are aware of the possible presence of dead-end states (Kolobov, Mausam, and Weld 2010
Long Range Evolution-based Path Planning for UAVs through Realistic Weather Environments
Long Range Evolution-based Path Planning for UAVs through Realistic Weather Environments Juan Planning for UAVs through Realistic Weather Environments Juan Carlos Rubio Torroella Co range flights is pre- sented. The planner makes use of wind information from actual weather forecast
Randomized Path Planning on Manifolds based on Higher-Dimensional Continuation
Porta, Josep M.
Abstract Despite the significant advances in path planning methods, highly constrained problems are still constrained systems. The proposed planner builds on recently developed tools for higher is not cen- tered in, and tightly enveloped by the ambient space box, the sampling process is biased
Path Thresholding: Asymptotically Tuning-Free High-Dimensional Sparse Regression
Path Thresholding: Asymptotically Tuning-Free High-Dimensional Sparse Regression Divyanshu Vats of selecting tuning parame- ters for high-dimensional sparse regression. We propose a simple and computation-dependent sparse regression algorithm into an asymptotically tuning-free sparse regression algorithm. More specifi
An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks
Columbia University
1 An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks Abstract management architecture that provides the services and is instrumented for network management purposes service monitor- ing and control functions. The network management architecture proposes complete managed
AN EVOLUTION BASED PATH PLANNING ALGORITHM FOR AUTONOMOUS MOTION OF A UAV THROUGH UNCERTAIN
1 AN EVOLUTION BASED PATH PLANNING ALGORITHM FOR AUTONOMOUS MOTION OF A UAV THROUGH UNCERTAIN planning is a required part of a fully autonomous UAV. In controlled airspace, such a UAV would have of an unmanned air vehicle (UAV) through a field of obstacles at uncertain locations. We begin with the static
Multi-UAV Convoy Protection: An Optimal Approach to Path Planning and Coordination
Egerstedt, Magnus
1 Multi-UAV Convoy Protection: An Optimal Approach to Path Planning and Coordination X. C. Ding, A Aerial Vehicles (UAVs) to provide convoy protection to a group of ground vehicles. The UAVs are modeled to provide convoy protection to ground vehicles moving on straight lines. The minimum number of UAVs required
Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation
Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation Brian R by tracking a second UAV flying a predefined pattern. Finally, a method of commanding the observation vector ^s UAV sensor line of sight unit vector p Attraction point u UAV Control vector xt Target state
Sastry, S. Shankar
American Institute of Aeronautics and Astronautics 1 A Dynamic Path Generation Method for a UAV of unmanned aerial vehicles (UAVs) in the urban environment is presented. For the missions of a team of UAVs is applied to a deployment scenario of sixteen rotary-wing UAVs flying in a cluttered urban area and showed
MULTI-TARGET ASSIGNMENT AND PATH PLANNING FOR GROUPS OF UAVS
Minai, Ali A.
Chapter 1 MULTI-TARGET ASSIGNMENT AND PATH PLANNING FOR GROUPS OF UAVS Theju Maddula Ali A. Minai of Cincinnati Cincinnati, OH 45221 Abstract Uninhabited autonomous vehicles (UAVs) have many useful military in the possibility of using large teams (swarms) of UAVs functioning cooperatively to accomplish a large number
FRC on the Path to Fusion Energy (Moderate Density Steady-State Approach)
to start from already formed FRC) Plasma measurement in RMF frame of reference so s RMF r Br T *2 22 µ1 FRC on the Path to Fusion Energy (Moderate Density Steady-State Approach) Alan Hoffman Redmond Plasma Physics Laboratory University of Washington (FPA Meeting on Fusion Pathways to the Future
Biosensor diagnosis of urinary tract infections: a path to better treatment?
Wong, Pak Kin
Biosensor diagnosis of urinary tract infections: a path to better treatment? Kathleen E. Mach1 to the emer- gence of resistant pathogens. Biosensors are emerging as a powerful diagnostic platform pregnancy tests are now conducted in the home, biosensors are poised to improve UTI diagnosis significantly
Paths and KostkaMacdonald Polynomials Anatol N. KIRILLOV and Reiho SAKAMOTO
class of combinatorial statistics that naturally generalize the soÂcalled energy statistics. Mathematics, the statistics energy E is an example of a generalized machonian statistics [21], Section 2, whereas Subject Classification (2000) 05E10, 20C35. Key words and phrases: Crystals, Paths, Energy and Tau
Observations and design of public place and paths in a New England town
Compton, Ann, M. Arch. Massachusetts Institute of Technology
1984-01-01
This is a plan - a hypothesis in which some ideas are developed for the building of a path and parks. Through the use of imagery texture, and materials a sense of the possible is evoked. This is also an exploration of ...
Parallelization of Path Planning Algorithms for AUVs Concepts, Opportunities, and Program-Technical
Kremer, Ulrich
of an energy-aware, many-core computing architec- ture to perform on-board path planning within a battery core single-chip system developed by Intel. The performance, power, and energy consumption GB/s bisection bandwidth between tiles, and four integrated DDR3 memory controllers [2, 3]. Each core
(Nothing else) MATor(s): Monitoring the Anonymity of Tor's Path Selection
International Association for Cryptologic Research (IACR)
& Future Work 26 1 #12;1 Introduction The onion routing network Tor is a widely employed low(Nothing else) MATor(s): Monitoring the Anonymity of Tor's Path Selection Michael Backes1,2 Aniket we present MATOR: a framework for rigorously assessing the degree of anonymity in the Tor network
A new sparse representation of seismic data using adaptive easy-path wavelet transform
Plonka, Gerlind
,3, Gerlind Plonka 2, Herv´e Chauris 3 1 Institute of Seismic Exploration, School of Aerospace, Tsinghua exploration, see e.g., seismic denoising [11, 19], data recovery [12], multiple re- moval [13], migration [3A new sparse representation of seismic data using adaptive easy-path wavelet transform Jianwei Ma 1
Allen, Leslie H.
W deposition and titanium fluoride formation during WF6 reduction by Ti: Reaction path, Materials Research Laboratory, and Department of Materials Science, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801 V. C. Hornback and D. J. Allman Symbios Logic Incorporated, 1635 Aeroplaza
Circuit switches have simpler data paths and are potentially much faster than
McKeown, Nick
2 Circuit switches have simpler data paths and are potentially much faster than packet switches. Taking advantage of this dif- ference makes very high capacity all-optical circuit switches feasible, whereas all-optical packet switches are a long way from com- mercial practicality. Peak
Portal-Based True-Distance Heuristics for Path Finding Meir Goldenberg
Schaeffer, Jonathan
Portal-Based True-Distance Heuristics for Path Finding Meir Goldenberg Information Systems. In this paper, we introduce a new TDH, the portal-based heuristic. The domain is partitioned into regions and portals between regions are identified. True distances be- tween all pairs of portals are stored and used
A Competition-Ba sed Explanation of Syntactic Attachment Preferences and Garden Path Phenomena
A Competition-Ba sed Explanation of Syntactic Attachment Preferences and Garden Path Phenomena suzanne@cs.toronto.edu Abstract This paper presents a massively parallel parser that pre- dicts critical or revision strategies. The processing of a syntactic am- biguity is modeled as an active, distributed
Path Analysis Models of an Autonomous Agent in a Complex Environment
populated by autonomous agents. It is a simulation of forest fires in Yellowstone National Park will present descriptive, predictive and causal models of the behavior of agents that fight simulated forest fires. We will describe the shortcomings of descriptive and predictive models, and summarize path
The path integral of Feynman and "information modelling" of processes and systems
O. I. Shro
2009-03-29
The given article example of physical analogies to be entered information space-time. The opportunity of Poincare group use is shown for transition from one frame in another, for this purpose is entered invariant velocity of transition of the information. For calculation of information processes probability amplitudes is offered using path integral of Feynman.
String method in collective variables: Minimum free energy paths and isocommittor surfaces
Van Den Eijnden, Eric
York University, New York, New York 10012 Giovanni Ciccottid INFM and Dipartimento di Fisica in the free energy. Provided that the number of collective variables is large enough, the new techniqueString method in collective variables: Minimum free energy paths and isocommittor surfaces Luca
Demonstration of Time Reversal Methods in a Multi-path Environment
Sarabandi, Kamal
Demonstration of Time Reversal Methods in a Multi-path Environment K. Sarahandi* Fellow, ZEEE, I and focusing in a spatially varying (inhomogeneous) medium. While the concept of time reversal or applying time constructively, and focus the received energy at this point. In any b i t e size array that occupies B limited
IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997 861 Virtual Path Bandwidth
Columbia University
IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997 861 Virtual Path Bandwidth Allocation in Multiuser Networks Aurel A. Lazar, Fellow, IEEE, Ariel Orda, Senior Member, IEEE, and Dimitrios E. Pendarakis, Member, IEEE Abstract-- We consider a multiuser network that is shared
Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes
Smith, Ryan N.
Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes Wesam H. Al-Sabban, Luis F. Gonzalez and Ryan N. Smith Abstract-- Exploiting wind-energy is one possible way to extend the flight duration of an Unmanned Aerial Vehicle. Wind-energy can also be used
de Gispert, Adrià
transducer (WFST) opera- tions1. The LMBR decision rule in Tromble et al. (2008) has the form ^E = argmax EE(u|E) for all u N. Tromble et al. (2008) use Equation (1) as an approximation to the general form impossible for individual paths. Therefore, while the Tromble et al. (2008) linearisation of the gain
The TauPToo~kit:Flexib/e Seismic Travel-time and Ray-path Utilities
Cerveny, Vlastislav
The TauPToo~kit:Flexib/e Seismic Travel-time and Ray-path Utilities H. Philip Crotwell, Thomas studies. These factors highlight the need for versatile utilities that allow the calculation of travel to implement this approach. We used Maple (Heal etal., 1996), a symbolic mathematics utility, to help convert
Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path
Haller, Gary L.
Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path Gregg Lois the dynamics of protein folding. The key insight is that the search for the native protein conformation. In the ``new view'' of protein folding (3,7), statistical fluctuations on an energy landscape give rise
Assessing the Impact of Automated Path Planning Aids in the Maritime Community
Cummings, Mary "Missy"
and sometimes nuclear reactors onboard. There also appears to be a pervasive lack of trust in automation in military submarine and surface ship navigation, paths are planned and re-planned using paper charts more situational awareness to a submarine commander, this thesis develops and implements an automation
A Vervaat-like path transformation for the re ected Brownian bridge
Henri PoincarÃ© -Nancy-UniversitÃ©, UniversitÃ©
A Vervaat-like path transformation for the re ected Brownian bridge conditioned on its local time transformation for the re ected Brownian bridge conditioned on its local time at 0: up to random shifts, this process equals the two processes constructed from a Brownian bridge and a Brownian excursion by adding
Roadmaps using Gradient Extremal Paths Ioannis Filippidis and Kostas J. Kyriakopoulos
Low, Steven H.
Roadmaps using Gradient Extremal Paths Ioannis Filippidis and Kostas J. Kyriakopoulos Abstract-- This work proposes a motion planning method based on the construction of a roadmap connecting the critical methods due to local minima caused by concave obstacles. The roadmap is incre- mentally constructed
Stentz, Tony
Abstract Planning for multiple mobile robots in dynamic environ ments involves determining the optimal path each robot should follow to accomplish the goals of the mission, given the current knowledge reassign robots to goals in order to continually minimize the time to complete the mission. In this paper
BENCHMARKING ROBOT PATH PLANNING ANDREW N. HAND, JAGRUTHI GODUGU, KAVEH ASHENAYI,
Wainwright, Roger L.
1 BENCHMARKING ROBOT PATH PLANNING ANDREW N. HAND, JAGRUTHI GODUGU, KAVEH ASHENAYI, THEODORE W Algorithms (GA's) to develop an algorithm for autonomous robot navigation. We have achieved significant in different categories as Easy, Moderate, Difficult and Very Difficult. INTRODUCTION An autonomous robot
A Path Tracking Criterion for an LHD Articulated Claudio Alta ni
Altafini, Claudio
in this paper. It exploits the particular con guration of this vehicle, composed of two units connected of curvature is the only measure easily attainable to describe the path and it is naturally given with respect, changing the angle between the front and rear part by means of hydraulic actuators. Both the shape
Autonomous Local Path-Planning for a Mobile Robot Using a Genetic Algorithm
Wainwright, Roger L.
, Kaveh Ashenayi, Theodore W. Manikas, Roger L. Wainwright, Heng-Ming Tai Electrical Engineering of everyday life. Recently, robots have become a major part of this trend. Therefore, autonomously navigating of a genetic algorithm based path-planning software. The algorithm uses an improved, modified version
Flight Path and Wing Optimization of Lithium-Air Battery Powered Passenger Aircraft
Alonso, Juan J.
in the design of electrically-driven aircraft, particularly in the case of fuel cells and batteries.57 One to implement vis. a vis. fuel cells, in particular, liquid hydrogen fuel cells. However, present-day batteryFlight Path and Wing Optimization of Lithium-Air Battery Powered Passenger Aircraft J. Michael Vegh
Smooth Path Planning of a Mobile Robot Using Stochastic Particle Swarm Optimization
Li, Yangmin
.mo Abstract-- This paper proposes a new approach using im- proved particle swarm optimization (PSO optimization methods that produce nonsmooth paths, the PSO method developed in this paper can generate smooth using mobile robots. To reduce computational cost of optimization, the stochastic PSO (S-PSO) with high
Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path
Gelfond, Michael
Reliable Protein Folding on Complex Energy Landscapes: The Free Energy Reaction Path Gregg Lois be calculated from measurements of the free energy. We test these predictions against numerical simulations folding problem (24). Each protein conformation has a free energy that determines its probability
Equilibrium free energies from path sampling of nonequilibrium trajectories Sean X. Suna)
Sun, Sean
Equilibrium free energies from path sampling of nonequilibrium trajectories Sean X. Suna equilibrium free energy and nonequilibrium work is rewritten as an average of work with respect to a work nonequilibrium trajectories yields good estimates of the equilibrium free energy change. The procedure can
The Spurious Path Problem in Abstraction Gaojian Fan and Robert C. Holte
Holte, Robert
The Spurious Path Problem in Abstraction Gaojian Fan and Robert C. Holte University of Alberta, Edmonton, Alberta, Canada {gaojian, rholte}@ualberta.ca Abstract Abstraction is a powerful technique. We provide syntactical conditions under which our method can re- move state-independent spurious
Smith, Ryan N.
Wind-Energy based Path Planning For Electric Unmanned Aerial Vehicles Using Markov Decision wind-energy is one possible way to ex- tend flight duration for Unmanned Arial Vehicles. Wind-energy sources of wind energy available to exploit for this problem [5]: 1) Vertical air motion, such as thermal
Approximation Algorithms and Heuristics for a 2-depot, Heterogeneous Hamiltonian Path Problem
Doshi, Riddhi Rajeev
2011-10-21
Various civil and military applications of UAVs, or ground robots, require a set of vehicles to monitor a group of targets. Routing problems naturally arise in this setting where the operators of the vehicles have to plan the paths suitably in order...
Schlegel, H. Bernhard
-22 Numerical methods for integrating ordinary differential equations may be classified as either explicit methods required derivative information at the end point as well. For integrating eq 1, the differential of reaction path following calculation. The most common use of such a calculation is to ensure
H. Kleinert; V. Zatloukal
2015-03-05
The statistics of rare events, the so-called black-swan events, is governed by non-Gaussian distributions with heavy power-like tails. We calculate the Green functions of the associated Fokker-Planck equations and solve the related stochastic differential equations. We also discuss the subject in the framework of path integration.
Effect of Path Diversity on the loss performance of UDP Packets over the Internet
Neirotti, Juan Pablo
Effect of Path Diversity on the loss performance of UDP Packets over the Internet Richard Haywood network consists of a number of relay nodes that are positioned around the Internet. In each] the authors look at Sprint's (a large US Internet Service Provider (ISP)) internal network and find
Leading Up the Lexical Garden Path: Segmentation and Ambiguity in Spoken Word Recognition
Davis, Matt
Leading Up the Lexical Garden Path: Segmentation and Ambiguity in Spoken Word Recognition Matthew H-modal repetition priming experiments, traced the time course of recognition of words with onset embeddings (captain) and short words in contexts that match (cap tucked) or mismatch (cap looking) with longer words. Results
Community planning that preserves the natural environment, leading the path towards sustainability
, Emergency Management, and Sustainable Planning. In addition to economic benefits that community characterCommunity planning that preserves the natural environment, leading the path towards sustainability a community handbook Growing Texas: #12;2 · GrowinG Texas: a communiTy handbook As Texas continues
Statistical fracture modeling: crack path and fracture criteria with application to homogeneous and
Ritchie, Robert
Statistical fracture modeling: crack path and fracture criteria with application to homogeneous; accepted 23 January 2002 Abstract Analysis has been performed on fracture initiation near a crack in a brittle material with strength described by Weibull statistics. This nonlocal fracture model allows
SAMPLE-PATH ANALYSIS OF THE PROPORTIONAL RELATION AND ITS CONSTANT FOR DISCRETE-TIME
Ishizaki, Fumio
SAMPLE-PATH ANALYSIS OF THE PROPORTIONAL RELATION AND ITS CONSTANT FOR DISCRETE-TIME SINGLE and c is a constant which is called proportional constant. We call such a relation the proportional relation. It has been shown that similar proportional relations also hold for some other queueing systems
Dynamic response of adhesion complexes: Beyond the single-path picture Denis Bartolo,1,
Derényi, Imre
Dynamic response of adhesion complexes: Beyond the single-path picture Denis Bartolo,1, * Imre Dere, France Received 25 June 2001; published 10 May 2002 We analyze the response of molecular adhesion put forward to probe the unfolding of proteins and to quantify the strength of adhesion structures 1
Regular Paths in SparQL: Querying the NCI Thesaurus Landon T. Detwiler1
Washington at Seattle, University of
Regular Paths in SparQL: Querying the NCI Thesaurus Landon T. Detwiler1 , Dan Suciu, PhD3 , James F can create views of the OWL version of the NCI Thesaurus that match the views generated by the web the matched triples. Some examples of triples from the National Cancer Institute (NCI) Thesaurus that would
Bicolored Shortest Paths in Graphs with Applications to Network Overlay Design
Mao, Weizhen
and Hyeong-Ah Choi Department of Electrical Engineering and Computer Science George Washington University variation of the standard shortest path problem is thus of interest: what is the shortest (cheapest) route is the cheapest route between A and B that meets the delay constraint? In this paper, we formulate a graph
Path-dependent human identification using a pyroelectric infrared sensor and Fresnel lens
Pitsianis, Nikos P.
Path-dependent human identification using a pyroelectric infrared sensor and Fresnel lens arrays) sensor whose visibility is modulated by a Fresnel lens array. The optimal element number of the lens," Proc. of IEEE. Signals, Systems and Computers 1, 843-838 (2001). 11. Fresnel Technologies Inc., http
1182 J. GUIDANCE, VOL. 19, NO. 5: ENGINEERING NOTES Fig. 2 Fixed and optimized flight paths.
Singh, Tarunraj
and optimized flight paths. Conclusion A simple guidance law for operation of dual-fuel SSTO launch vehicles hasbeen developed andused to determine the optimal value of the transition Mach number from dual fuel higher dynamic pressure than the fixed, particularly in dual-fuel mode. In the future, the guidance
Reconstruction of the Free Energy in the Metastable Region using the Path Ensemble
Heermann, Dieter W.
Reconstruction of the Free Energy in the Metastable Region using the Path Ensemble Armando Ticona which we reconstruct the free energy as a function of the magnetic field, temperature and system size. From the reconstructed free energy, we obtain the free energy barrier that is associated
An Integrated Path Integral and Free-Energy Perturbation-Umbrella Sampling Method for Computing
Minnesota, University of
An Integrated Path Integral and Free-Energy Perturbation-Umbrella Sampling Method for Computing integral and free-energy perturbation-umbrella sampling (PI-FEP/UM) method for computing kinetic isotope effects is achieved by coupled free-energy perturbation and umbrella sampling for reactions involving
Studies on free energy calculations. I. Thermodynamic integration using a polynomial path
Mezei, Mihaly
Studies on free energy calculations. I. Thermodynamic integration using a polynomial path Haluk in the free energy of hydration between the C, and aR conformations of alanine dipeptide at infinite dilution equilibria is determined by free energy ditferences, the calculation of the free energies has long been
Schofield, Jeremy
Quantum free-energy differences from nonequilibrium path integrals. I. Methods and numerical are combined to yield methods for computing free-energy differences in quantum systems using nonequilibrium,8 provide a means to compute the free-energy difference between two classical systems by use of a control
Path Planning in Expansive Configuration Spaces David Hsu JeanClaude Latombe Rajeev Motwani
Latombe, Jean-Claude
whose connectivity can be effectively captured by a roadmap of randomlysampled milestones. The analysis, avoiding the cost of precomputing a roadmap for the entire configuration space. Thus, it is well a roadmap of the configuration space and tries to find a path between any two input configurations
Notes on Visibility Roadmaps and Path Planning J.P. Laumond, LAASCNRS, Toulouse, France
Cortés, Juan
Notes on Visibility Roadmaps and Path Planning J.P. Laumond, LAASCNRS, Toulouse, France T. Sim'eon, LAASCNRS, Toulouse, France Abstract This paper overviews the probabilistic roadmap ap proaches. Topology induces the combinatorial complexity of the roadmaps tending to capture both coverage and con
OLiMPS. OpenFlow Link-layer MultiPath Switching
Newman, Harvey B.; Barczyk, Artur; Bredel, Michael
2014-11-17
The OLiMPS project’s goal was the development of an OpenFlow controller application allowing load balancing over multiple switched paths across a complex network topology. The second goal was to integrate the controller with Dynamic Circuit Network systems such as ESnet’s OSCARS. Both goals were achieved successfully, as laid out in this report.
Analyzing California's GHG Reduction Paths using CA-TIMES Energy System Model
California at Davis, University of
Analyzing California's GHG Reduction Paths using CA-TIMES Energy System Model Christopher Yang@ucdavis.edu NextSTEPS (Sustainable Transportation Energy Pathways) #12;CA-TIMES Model Overview · CA-TIMES is a bottom-up, linear optimization model of California's energy sectors Technology and resources details
Transmission Design at the National Level: Benefits, Risks and Possible Paths Forward
Electric Energy System #12;Transmission Design at the National Level: Benefits, Risks and Possible Paths Planning, Western Electricity Coordinating Council (WECC) · Dale Osborn, Consulting Advisor, Transmission to move electric energy interregionally is limited to the capacity of the existing transmission system
Harmonic Path (HAPA) Algorithm for Noncontact Vital Signs Monitoring with IRUWB Radar
Ingram, Mary Ann
Harmonic Path (HAPA) Algorithm for Noncontact Vital Signs Monitoring with IRUWB Radar Van Nguyen. INTRODUCTION Vital sign monitoring is fundamental in health care as knowledge of the patient's heart rate (HR consistently and accurately [1]. Currently the most common form of vital sign monitoring in hospitals is pulse
Interactive Albedo Editing in Path-Traced Volumetric Materials MILO S HA SAN and RAVI RAMAMOORTHI
California at San Diego, University of
Interactive Albedo Editing in Path-Traced Volumetric Materials MILO S HA SAN and RAVI RAMAMOORTHI-reflection. This complexity can be handled by simulating the full volumetric light transport within these ma- terials by Monte by simulating the full volumetric light transport within these materials by Monte Carlo algorithms. E
A path integral formalism for the closure of autonomous statistical systems
Richard Kleeman
2015-03-25
Recently a path integral formalism has been proposed by the author which gives the time evolution of moments of slow variables in a Hamiltonian statistical system. That formalism is extended here to deal with a more general autonomous dynamical system. An immediate practical application to forced dissipative turbulent systems is thus now possible.
Douglas, David R.; Neil, George R.
2005-04-26
A particle beam recirculated chicane geometry that, through the inducement of a pair of 180 degree bends directed by the poles of a pair of controllable magnetic fields allows for variation of dipole position, return loop radii and steering/focussing, thereby allowing the implementation of independent variation of path length and momentum compaction.
Fuel-Optimal Centralized Coordination of Truck Platooning Based on Shortest Paths
Dimarogonas, Dimos
Fuel-Optimal Centralized Coordination of Truck Platooning Based on Shortest Paths Sebastian van de fuel consumption of trucks. Vehicles that drive at close inter- vehicle distance assisted by automatic the formation and the breakup of platoons in a fuel-optimal way. We formulate an optimization problem which
A common path forward for the immersive visualization community
Eric A. Wernert; William R. Sherman; Patrick O'Leary; Eric Whiting
2012-03-01
Immersive visualization makes use of the medium of virtual reality (VR) - it is a subset of virtual reality focused on the application of VR technologies to scientific and information visualization. As the name implies, there is a particular focus on the physically immersive aspect of VR that more fully engages the perceptual and kinesthetic capabilities of the scientist with the goal of producing greater insight. The immersive visualization community is uniquely positioned to address the analysis needs of the wide spectrum of domain scientists who are becoming increasingly overwhelmed by data. The outputs of computational science simulations and high-resolution sensors are creating a data deluge. Data is coming in faster than it can be analyzed, and there are countless opportunities for discovery that are missed as the data speeds by. By more fully utilizing the scientists visual and other sensory systems, and by offering a more natural user interface with which to interact with computer-generated representations, immersive visualization offers great promise in taming this data torrent. However, increasing the adoption of immersive visualization in scientific research communities can only happen by simultaneously lowering the engagement threshold while raising the measurable benefits of adoption. Scientists time spent immersed with their data will thus be rewarded with higher productivity, deeper insight, and improved creativity. Immersive visualization ties together technologies and methodologies from a variety of related but frequently disjoint areas, including hardware, software and human-computer interaction (HCI) disciplines. In many ways, hardware is a solved problem. There are well established technologies including large walk-in systems such as the CAVE{trademark} and head-based systems such as the Wide-5{trademark}. The advent of new consumer-level technologies now enable an entirely new generation of immersive displays, with smaller footprints and costs, widening the potential consumer base. While one would be hard-pressed to call software a solved problem, we now understand considerably more about best practices for designing and developing sustainable, scalable software systems, and we have useful software examples that illuminate the way to even better implementations. As with any research endeavour, HCI will always be exploring new topics in interface design, but we now have a sizable knowledge base of the strengths and weaknesses of the human perceptual systems and we know how to design effective interfaces for immersive systems. So, in a research landscape with a clear need for better visualization and analysis tools, a methodology in immersive visualization that has been shown to effectively address some of those needs, and vastly improved supporting technologies and knowledge of hardware, software, and HCI, why hasn't immersive visualization 'caught on' more with scientists? What can we do as a community of immersive visualization researchers and practitioners to facilitate greater adoption by scientific communities so as to make the transition from 'the promise of virtual reality' to 'the reality of virtual reality'.
International energy indicators
Bauer, E.K. (ed.)
1980-09-01
Data are compiled and graphs are presented for Iran: Crude Oil Capacity, Production and Shut-in, 1974-1980; Saudi Arabia: Crude Oil Capacity, Production and Shut-in, 1974-1980; OPEC (Ex-Iran and Saudi Arabia): Capacity, Production and Shut-in, 1974-1980; Non-OPEC Free World and US Production of Crude Oil, 1973-1980; Oil Stocks: Free World, US, Japan and Europe (landed), 1973-1980; Petroleum Consumption by Industrial Countries, 1973-1980; USSR Crude Oil Production, 1974-1980; Free World and US Nuclear Generation Capacity, 1973-1980; US Imports of Crude Oil and Products, 1973-1980; Landed Cost of Saudi Crude in Current and 1974 Dollars; US Trade in Bituminous Coal, 1973-1980; Summary of US Merchandise Trade, 1976-1980; and Energy/GNP Ratio.
Path Tracking Control for Dubin's Cars A.Balluchiy A.Bicchiy A.Balestrinoy G.Casalinoz
Baltes, Jacky
Path Tracking Control for Dubin's Cars A.Balluchiy A.Bicchiy A.Balestrinoy G.Casalinoz yDepartment of Electrical Systems and Automation, University of Pisa. Via Diotisalvi, 2, 56125 Pisa - Italy. z. Abstract The problem of driving a car along a given path is con- sidered. In order to model a realistic
Cao, Jianshu
. III. Exact stochastic path integral evaluation Jeremy M. Moix, Jian Ma, and Jianshu Cao Citation); 10.1063/1.4908599 The functional integral with unconditional Wiener measure for anharmonic oscillator. III. Exact stochastic path integral evaluation Jeremy M. Moix, Jian Ma, and Jianshu Caoa) Department
Shen, Xuemin "Sherman"
utilization and drivers' travel cost. Index Terms--Hybrid VANETs, path planning, spatial utiliza- tion, travel1664 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 64, NO. 5, MAY 2015 Real-Time Path Planning planning can efficiently relieve traffic congestion in urban scenarios. However, how to design an efficient
On the Selection of Optimal Diverse AS-Paths for Inter-Domain IP/(G)MPLS Tunnel Provisioning
Rougier, Jean-Louis
On the Selection of Optimal Diverse AS-Paths for Inter-Domain IP/(G)MPLS Tunnel Provisioning of diverse AS paths can be computed, in order to proactively increase the success rate of tunnel set these services beyond domain boundaries, particularly for critical inter-AS VPNs, TV transport or voice gateways
Cao, Jianshu
The formulation of quantum statistical mechanics based on the Feynman path centroid density. V regime using the Feynman path centroid perspective in quantum statistical mechanics. To accomplish of their lack of static and stable structures. The fluidity of liq- uids thereby makes it formally improper
Minimum-Risk Path Finding by an Adaptive Amoebal Network Toshiyuki Nakagaki,1,2,* Makoto Iima,1
Showalter, Kenneth
Minimum-Risk Path Finding by an Adaptive Amoebal Network Toshiyuki Nakagaki,1,2,* Makoto Iima,1 is formed that connects the food sources through the shortest route. When the light- avoiding organism risk as the experimentally measurable rate of light-avoiding movement, the minimum-risk path
Klippenstein, S. J.; Chemistry
1997-11-01
The energetics of the CX dissociations of C{sub 6}H{sub 6}{sup +}, C{sub 6}H{sub 5}F{sup +}, C{sub 6}H{sub 5}Cl{sup +}, C{sub 6}H{sub 5}Br{sup +}, and C{sub 10}H{sub 8}{sup +} are investigated with various ab initio quantum chemical simulators. The primary focus is the determination of the energetics as a function of the CX bond length at the MP2 level for the C{sub 6}H{sub 5}X{sup +}dissociation paths leading to the lowest energy products [C{sub 6}H{sub 5}({sup 1}A{sub 1}) + X]. The bending force constants along this path are determined at either the HF or MP2 level. The absolute energetics of the various reactants and products are also studied at the MP2 and B3LYP levels including the dissociation of C{sub 10}H{sub 8}{sup +}. A combination of CCSD(T)/6-31G* and MP2/6-311G(2df,2p) calculations are employed in the determination of higher level estimates for the key reactants and products in the dissociation of the benzene cation. The key dissociation paths for this dissociation are also studied at a higher level (CASPT2). For the halogen-producing dissociations the energetics are investigated for each of the three separate orientations of the radical p-orbital in the halogen atom. The various results obtained illustrate the increasing strength of the long-range interactions for the progression from H to F to Cl to Br. Correspondingly, one expects the transition state to be more and more phase space theory like for this same progression. For the C---Br dissociation it seems very unlikely that short-range interactions will play any role in determining the reactive flux. In contrast, short-range repulsions are again expected to play an important role for the C---H dissociations in both C{sub 6}H{sub 6}{sup +}and C{sub 10}H{sub 8}{sup +}. The present results also indicate the dominant importance of the singlet phenyl cation channel to the dissociation dynamics.
Economics, producer politics will shape oil markets through 1996
Not Available
1993-10-25
Two main forces will shape the oil market during the next 3 years. The pace of worldwide economic growth will determine demand growth. Although energy use efficiency has improved, especially in the industrialized world, demand for energy and oil products remains chiefly a function of economic activity. And producing nation politics will have much to say about supply. A crucial and unpredictable variable is when Iraq, now subject to a United Nations trade embargo, resumes exports at significant rates. Demand growth will exceed production increases outside the Organization of Petroleum Exporting Countries, which means an ever-increasing role for the exporters' group. The paper discusses the demand outlook, economic projections, energy intensity, regional energy mixes, world energy mix, petroleum demand, petroleum product demand, supply questions, non-OPEC production, reserves and output capacity, production gains, industry operations (drilling, stocks, refining), prices, price forecasts, and the role of taxes.
Azad, Abdul-Majeed
Performance of Sulfur Tolerant Reforming Catalysts for Production of Hydrogen from Jet Fuel is a critical path for the use of jet fuels in powering the commercial growth of fuel cell systems for air the fuel through adsorptive methods is not practical for long term operations. The current work describes
Miura, Shinichi [Institute for Molecular Science, 38 Myodaiji, Okazaki 444-8585 (Japan)
2007-03-21
In this paper, we present a path integral hybrid Monte Carlo (PIHMC) method for rotating molecules in quantum fluids. This is an extension of our PIHMC for correlated Bose fluids [S. Miura and J. Tanaka, J. Chem. Phys. 120, 2160 (2004)] to handle the molecular rotation quantum mechanically. A novel technique referred to be an effective potential of quantum rotation is introduced to incorporate the rotational degree of freedom in the path integral molecular dynamics or hybrid Monte Carlo algorithm. For a permutation move to satisfy Bose statistics, we devise a multilevel Metropolis method combined with a configurational-bias technique for efficiently sampling the permutation and the associated atomic coordinates. Then, we have applied the PIHMC to a helium-4 cluster doped with a carbonyl sulfide molecule. The effects of the quantum rotation on the solvation structure and energetics were examined. Translational and rotational fluctuations of the dopant in the superfluid cluster were also analyzed.
Efficient algorithms for semiclassical instanton calculations based on discretized path integrals
Kawatsu, Tsutomu, E-mail: kawatsu@fukui.kyoto-u.ac.jp, E-mail: smiura@mail.kanazawa-u.ac.jp [Institute for Molecular Science, National Institute of Natural Science, 38 Nishigonaka, Myodaiji, Okazaki 222-8585 (Japan); School of Mathematics and Physics, Kanazawa University, Kanazawa 920-1192 (Japan); Miura, Shinichi, E-mail: kawatsu@fukui.kyoto-u.ac.jp, E-mail: smiura@mail.kanazawa-u.ac.jp [School of Mathematics and Physics, Kanazawa University, Kanazawa 920-1192 (Japan)
2014-07-14
Path integral instanton method is a promising way to calculate the tunneling splitting of energies for degenerated two state systems. In order to calculate the tunneling splitting, we need to take the zero temperature limit, or the limit of infinite imaginary time duration. In the method developed by Richardson and Althorpe [J. Chem. Phys. 134, 054109 (2011)], the limit is simply replaced by the sufficiently long imaginary time. In the present study, we have developed a new formula of the tunneling splitting based on the discretized path integrals to take the limit analytically. We have applied our new formula to model systems, and found that this approach can significantly reduce the computational cost and gain the numerical accuracy. We then developed the method combined with the electronic structure calculations to obtain the accurate interatomic potential on the fly. We present an application of our ab initio instanton method to the ammonia umbrella flip motion.
BEopt: Software for Identifying Optimal Building Designs on the Path to Zero Net Energy; Preprint
Christensen, C.; Horowitz, S.; Givler, T.; Courtney, A.; Barker, G.
2005-04-01
A zero net energy (ZNE) building produces as much energy on-site as it uses on an annual basis--using a grid-tied, net-metered photovoltaic (PV) system and active solar. The optimal path to ZNE extends from a base case to the ZNE building through a series of energy-saving building designs with minimal energy-related owning and operating costs. BEopt is a computer program designed to find optimal building designs along the path to ZNE. A user selects from among predefined options in various categories to specify options to be considered in the optimization. Energy savings are calculated relative to a reference. The reference can be either a user-defined base-case building or a climate-specific Building America Benchmark building automatically generated by BEopt. The user can also review and modify detailed information on all available options and the Building America Benchmark in a linked options library spreadsheet.
Critical RSOS and Minimal Models I: Paths, Fermionic Algebras and Virasoro Modules
Giovanni Feverati; Paul A. Pearce
2002-11-20
We consider sl(2) minimal conformal field theories on a cylinder from a lattice perspective. To each allowed one-dimensional configuration path of the A_L Restricted Solid-on-Solid (RSOS) models we associate a physical state |h> and a monomial in a finite fermionic algebra. The orthonormal states produced by the action of these monomials on the primary states generate finite Virasoro modules with dimensions given by the finitized Virasoro characters $\\chi^{(N)}_h(q)$. These finitized characters are the generating functions for the double row transfer matrix spectra of the critical RSOS models. We argue that a general energy-preserving bijection exists between the one-dimensional configuration paths and the eigenstates of these transfer matrices and exhibit this bijection for the critical and tricritical Ising models in the vacuum sector. Our results extend to Z_{L-1} parafermion models by duality.
Nariya Uchida; Gary S. Grest; Ralf Everaers
2007-11-28
We combine computer simulations and scaling arguments to develop a unified view of polymer entanglement based on the primitive path analysis (PPA) of the microscopic topological state. Our results agree with experimentally measured plateau moduli for three different polymer classes over a wide rangeof reduced polymer densities: (i) semi-dilute theta solutions of synthetic polymers, (ii) the corresponding dense melts above the glass transition or crystallization temperature, and (iii) solutions of semi-flexible (bio)polymers such as f-actin or suspensions of rodlike viruses. Together these systems cover the entire range from loosely to tightly entangled polymers. In particular, we argue that the primitive path analysis renormalizes a loosely to a tightly entangled system and provide a new explanation of the successful Lin-Noolandi packing conjecture for polymer melts.
Commentary: The Hash House Harriers and the winding path to materials discovery
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Canfield, Paul C.
2015-04-07
Materials science research can be both very demanding and extremely rewarding. In this Commentary, in my own research of new electronic and magnetic materials, I give numerous exemplars of the path followed to materials discovery. I also highlight the parallels between my research experiences with the pastime of running. I hope that my thoughts will help guide junior researchers along the often tortuous and exciting path to new materials and that I can teach them to be open minded and persistent about following new lines of discovery. “No-pain, no-gain” applies to many things in life, running and scientific research beingmore »just two examples, but I hope in the case of scientific research that I can convince you the gain normally outweighs the pain.« less
Investigation of leakage current paths in n-GaN by conductive atomic force microscopy
Kim, Bumho; Park, Yongjo, E-mail: yp0520@snu.ac.kr, E-mail: eyoon@snu.ac.kr [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of)] [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Moon, Daeyoung; Nanishi, Yasushi [WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)] [WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Joo, Kisu [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of) [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Oh, Sewoung [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Lee, Young Kuk [Korea Research Institute of Chemical Technology, Daejon 305-600 (Korea, Republic of)] [Korea Research Institute of Chemical Technology, Daejon 305-600 (Korea, Republic of); Yoon, Euijoon, E-mail: yp0520@snu.ac.kr, E-mail: eyoon@snu.ac.kr [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of) [Energy Semiconductor Research Center, Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Suwon 443-270 (Korea, Republic of); Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)
2014-03-10
We have investigated electrical characteristics of leakage current paths in n-GaN layer grown by metal-organic chemical vapor deposition with conductive-atomic force microscopy (C-AFM). The C-AFM mapping shows two kinds of leakage current paths existing in the n-GaN layer: open-core dislocation and pure screw dislocation. From the localized I-V curves measured by C-AFM, we confirmed that the open-core screw dislocation shows more significant leakage current. We explained these results in terms of a modified Schottky band model based on donor states formed by oxygen segregation at the (10?10) sidewall of the open-core screw dislocation.
Paths of Consistent and Inconsistent Status Information and the Induction of Relevance
Berger, Joseph; Wagner, David G
2015-08-15
and Inconsistent Status Information and the Induction of Relevance.pdf.txt Content-Type text/plain; charset=UTF-8 Paths of Consistent and Inconsistent Status Information and the * Induction of Relevance Joseph Berger David G. Wagner Stanford..., James and Hawkins, 1958; Strodtbeck and Mann, 1956; Katz, Goldston and Benjamin, 1958; Katz and Benjamin, 1960.) Through a coordinated program of research and theory (Berger, Cohen and Zelditch, 1966; Berger, Conner and Fisek, 1974), a detailed...
Validity of Born Approximation for Nuclear Scattering in Path Integral Representation
M. R. Pahlavani; R. Morad
2009-07-01
The first and second Born approximation are studied with the path integral representation for $ {\\cal T} $ matrix. The $ {\\cal T}$ matrix is calculated for Woods-Saxon potential scattering. To make corresponding integrals solvable analytically, an approximate function for the Woods-Saxon potential is used. Finally it shown that the Born series is converge at high energies and orders higher than two in Born approximation series can be neglected.
Equation of state of strongly coupled quark--gluon plasma -- Path integral Monte Carlo results
V. S. Filinov; M. Bonitz; Y. B. Ivanov; V. V. Skokov; P. R. Levashov; V. E. Fortov
2009-05-04
A strongly coupled plasma of quark and gluon quasiparticles at temperatures from $ 1.1 T_c$ to $3 T_c$ is studied by path integral Monte Carlo simulations. This method extends previous classical nonrelativistic simulations based on a color Coulomb interaction to the quantum regime. We present the equation of state and find good agreement with lattice results. Further, pair distribution functions and color correlation functions are computed indicating strong correlations and liquid-like behavior.
A methodology for predicting minimum travel paths using real-time traffic network data
Liu, Chang
1991-01-01
A METHODOLOGY FOR PREDICTING MINIMUM TRAVEL PATHS USING REAL-TIME TRAFFIC NETWORK DATA A Thesis by Chang Liu Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillrnent of the requirements for the degree... operations. ACKNOWLEDGEMENTS I would like to express special thanks to Dr. Daniel B. Fambro for his guidance, assistance, and patience from the initial stage of my graduate career at Texas A&M University through the final stage of the research documented...
1999-10-01
Long-term stewardship is expected to be needed at more than 100 DOE sites after DOE's Environmental Management program completes disposal, stabilization, and restoration operations to address waste and contamination resulting from nuclear research and nuclear weapons production conducted over the past 50 years. From Cleanup to stewardship provides background information on the Department of Energy (DOE) long-term stewardship obligations and activities. This document begins to examine the transition from cleanup to long-term stewardship, and it fulfills the Secretary's commitment to the President in the 1999 Performance Agreement to provide a companion report to the Department's Accelerating Cleanup: Paths to Closure report. It also provides background information to support the scoping process required for a study on long-term stewardship required by a 1998 Settlement Agreement.
Abnormal Synchronizing Path of Delay-coupled Chaotic Oscillators on the Edge of Stability
Zhuo, Zhao; Fu, Zhong-Qian
2015-01-01
In this paper, the transition of synchronizing path of delay-coupled chaotic oscillators in a scale-free network is highlighted. Mainly, through the critical transmission delay makes chaotic oscillators be coupled on the edge of stability, we find that the transition of synchronizing path is \\emph{abnormal}, which is characterized by the following evidences: (a) synchronization process starts with low-degree rather than high-degree ones; (b) the high-degree nodes don't undertake the role of hub; (c) the synchronized subnetworks show a poor small-world property as a result of hubs absence; (d) the clustering synchronization behavior emerges even community structure is absent in the scale-free network. This abnormal synchronizing path suggests that the diverse synchronization behaviors occur in the same topology, which implies that the relationship between dynamics and structure of network is much more complicated than the common sense that the structure is the foundation of dynamics. Moreover, it also reveals ...
Dornheim, Tobias; Groth, Simon; Filinov, Alexey; Bonitz, Michael
2015-01-01
The uniform electron gas (UEG) at finite temperature is of high current interest due to its key relevance for many applications including dense plasmas and laser excited solids. In particular, density functional theory heavily relies on accurate thermodynamic data for the UEG. Until recently, the only existing first-principle results had been obtained for $N=33$ electrons with restricted path integral Monte Carlo (RPIMC), for low to moderate density, $r_s = \\overline{r}/a_B \\gtrsim 1$. This data has been complemented by Configuration path integral Monte Carlo (CPIMC) simulations for $r_s \\leq 1$ that substantially deviate from RPIMC towards smaller $r_s$ and low temperature. In this work, we present results from an independent third method---the recently developed permutation blocking path integral Monte Carlo (PB-PIMC) approach [T. Dornheim \\textit{et al.}, NJP \\textbf{17}, 073017 (2015)] which we extend to the UEG. Interestingly, PB-PIMC allows us to perform simulations over the entire density range down to...
Controlling Low-Rate Signal Path Microdischarge for an Ultra-Low-Background Proportional Counter
Mace, Emily K.; Aalseth, Craig E.; Bonicalzi, Ricco; Day, Anthony R.; Hoppe, Eric W.; Keillor, Martin E.; Myers, Allan W.; Overman, Cory T.; Seifert, Allen
2013-05-01
ABSTRACT Pacific Northwest National Laboratory (PNNL) has developed an ultra-low-background proportional counter (ULBPC) made of high purity copper. These detectors are part of an ultra-low-background counting system (ULBCS) in the newly constructed shallow underground laboratory at PNNL (at a depth of ~30 meters water-equivalent). To control backgrounds, the current preamplifier electronics are located outside the ULBCS shielding. Thus the signal from the detector travels through ~1 meter of cable and is potentially susceptible to high voltage microdischarge and other sources of electronic noise. Based on initial successful tests, commercial cables and connectors were used for this critical signal path. Subsequent testing across different batches of commercial cables and connectors, however, showed unwanted (but still low) rates of microdischarge noise. To control this noise source, two approaches were pursued: first, to carefully validate cables, connectors, and other commercial components in this critical signal path, making modifications where necessary; second, to develop a custom low-noise, low-background preamplifier that can be integrated with the ULBPC and thus remove most commercial components from the critical signal path. This integrated preamplifier approach is based on the Amptek A250 low-noise charge-integrating preamplifier module. The initial microdischarge signals observed are presented and characterized according to the suspected source. Each of the approaches for mitigation is described, and the results from both are compared with each other and with the original performance seen with commercial cables and connectors.
Tapered laser rods as a means of minimizing the path length of trapped barrel mode rays
Beach, Raymond J.; Honea, Eric C.; Payne, Stephen A.; Mercer, Ian; Perry, Michael D.
2005-08-30
By tapering the diameter of a flanged barrel laser rod over its length, the maximum trapped path length of a barrel mode can be dramatically reduced, thereby reducing the ability of the trapped spontaneous emission to negatively impact laser performance through amplified spontaneous emission (ASE). Laser rods with polished barrels and flanged end caps have found increasing application in diode array end-pumped laser systems. The polished barrel of the rod serves to confine diode array pump light within the rod. In systems utilizing an end-pumping geometry and such polished barrel laser rods, the pump light that is introduced into one or both ends of the laser rod, is ducted down the length of the rod via the total internal reflections (TIRs) that occur when the light strikes the rod's barrel. A disadvantage of using polished barrel laser rods is that such rods are very susceptible to barrel mode paths that can trap spontaneous emission over long path lengths. This trapped spontaneous emission can then be amplified through stimulated emission resulting in a situation where the stored energy available to the desired lasing mode is effectively depleted, which then negatively impacts the laser's performance, a result that is effectively reduced by introducing a taper onto the laser rod.
Vittitoe, C.N.
1993-08-01
A method is presented to unfold the two-dimensional vertical structure in electron density by using data on the total electron content for a series of paths through the ionosphere. The method uses a set of orthonormal basis functions to represent the vertical structure and takes advantage of curved paths and the eikonical equation to reduce the number of iterations required for a solution. Curved paths allow a more thorough probing of the ionosphere with a given set of transmitter and receiver positions. The approach can be directly extended to more complex geometries.
Baer, Roi
BornOppenheimer invariants along nuclear configuration paths Roi Baera) Department of Physical of the wave function. This is done for each calculated state at each nuclear position. Thus he defines a Born to an arbitrary path in nuclear configuration space. We identify invariant electronic states along these paths
Keckler, Stephen W.
(ISPASS 2006) Critical Path Analysis of the TRIPS Architecture Ramadass Nagarajan Xia Chen Robert G. Mc on the graph, designers can gain insights into the bottlenecks of a design. This paper extends critical path expansion of the design space. Prior research has shown the utility of critical path anal- ysis in solving