Sample records for gas distribution network

  1. Resilience-Based Design of Natural Gas Distribution Networks

    E-Print Network [OSTI]

    Bruneau, Michel

    Case Study Resilience-Based Design of Natural Gas Distribution Networks G. P. Cimellaro, Ph.D., A response to natural disasters. In this paper, a new performance index measuring the functionality of a gas; Disaster resilience; Vulnerability; Gas networks; Damage assessment; Lifelines; Serviceability; Natural gas

  2. Engine technology advances show potential in labs: Part 1. [Retrofitting engine systems on gas distribution networks

    SciTech Connect (OSTI)

    McCoy, J.J. (Tenneco Gas Co., Houston, TX (United States)); Willson, B. (Colorado State Univ., Fort Collins, CO (United States))

    1994-06-01T23:59:59.000Z

    Cutting fuel consumption and reducing emissions are dominant goals of stationary gas engine operators. Recent technology advances show promise and could result in money-saving retrofit options. Selected new technologies include sensors, actuators--defined as anything controlling the engine: fuel and ignition--and control techniques. An attractive feature of most of these technologies is that they can be retrofitted onto existing engines, allowing the potential for improved performance at a fraction of engine replacement cost. This paper reviews these new technologies and how they perform.

  3. Distributed control of coded networks

    E-Print Network [OSTI]

    Zhao, Fang, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    The introduction of network coding has the potential to revolutionize the way people operate networks. For the benefits of network coding to be realized, distributed solutions are needed for various network problems. In ...

  4. Agenda: Natural Gas: Transmission, Storage and Distribution ...

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

    Natural Gas: Transmission, Storage and Distribution Agenda: Natural Gas: Transmission, Storage and Distribution A Public Meeting on the Quadrennial Energy Review, Hosted by the...

  5. Distributed Hydrogen Production from Natural Gas: Independent...

    Energy Savers [EERE]

    Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Independent...

  6. DISTRIBUTED SHORTESTPATH PROTOCOLS TIMEDEPENDENT NETWORKS

    E-Print Network [OSTI]

    Orda, Ariel

    DISTRIBUTED SHORTEST­PATH PROTOCOLS for TIME­DEPENDENT NETWORKS Ariel Orda Raphael Rom+ Department and the dynamic behavior of networks, since a distributed solution enables constant tracking of changes 32000 October 1992 Revised May 1994, October 1995 ABSTRACT This paper addresses algorithms for networks

  7. Analysis of Voltage Rise Effect on Distribution Network with Distributed

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Analysis of Voltage Rise Effect on Distribution Network with Distributed Generation M. A. Mahmud.hossain@adfa.edu.au, and H.Pota@adfa.edu.au). Abstract: Connections of distributed generation (DG) in distribution networks are increasing. These connections of distributed generation cause voltage rise in the distribution network

  8. Gas Main Sensor and Communications Network System

    SciTech Connect (OSTI)

    Hagen Schempf

    2006-05-31T23:59:59.000Z

    Automatika, Inc. was contracted by the Department of Energy (DOE) and with co-funding from the Northeast Gas Association (NGA), to develop an in-pipe natural gas prototype measurement and wireless communications system for assessing and monitoring distribution networks. This projected was completed in April 2006, and culminated in the installation of more than 2 dozen GasNet nodes in both low- and high-pressure cast-iron and steel mains owned by multiple utilities in the northeastern US. Utilities are currently logging data (off-line) and monitoring data in real time from single and multiple networked sensors over cellular networks and collecting data using wireless bluetooth PDA systems. The system was designed to be modular, using in-pipe sensor-wands capable of measuring, flow, pressure, temperature, water-content and vibration. Internal antennae allowed for the use of the pipe-internals as a waveguide for setting up a sensor network to collect data from multiple nodes simultaneously. Sensor nodes were designed to be installed with low- and no-blow techniques and tools. Using a multi-drop bus technique with a custom protocol, all electronics were designed to be buriable and allow for on-board data-collection (SD-card), wireless relaying and cellular network forwarding. Installation options afforded by the design included direct-burial and external polemounted variants. Power was provided by one or more batteries, direct AC-power (Class I Div.2) and solar-array. The utilities are currently in a data-collection phase and intend to use the collected (and processed) data to make capital improvement decisions, compare it to Stoner model predictions and evaluate the use of such a system for future expansion, technology-improvement and commercialization starting later in 2006.

  9. Resilience of natural gas networks during conflicts, crises and disruptions

    E-Print Network [OSTI]

    Carvalho, Rui; Bono, Flavio; Masera, Marcelo; Arrowsmith, David K; Helbing, Dirk

    2013-01-01T23:59:59.000Z

    Human conflict, geopolitical crises, terrorist attacks, and natural disasters can turn large parts of energy distribution networks offline. Europe's current gas supply network is largely dependent on deliveries from Russia and North Africa, creating vulnerabililties to social and political instabilities. During crises, less delivery may mean greater congestion, as the pipeline network is used in ways it has not been designed for. Given the importance of the security of natural gas supply, we develop a model to handle network congestion on various geographical scales. We offer a resilient response strategy to energy shortages and quantify its effectiveness for a variety of relevant scenarios. In essence, Europe's gas supply can be made robust even to major supply disruptions, if a fair distribution strategy is applied.

  10. Worst Case Scenario for Large Distribution Networks with Distributed Generation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Worst Case Scenario for Large Distribution Networks with Distributed Generation M. A. Mahmud) in distri- bution network has significant effects on voltage profile for both customers and distribution on variation of the voltage and the amount of DG that can be connected to the distribution networks. This paper

  11. Network Coding for Large Scale Content Distribution

    E-Print Network [OSTI]

    Keinan, Alon

    Network Coding for Large Scale Content Distribution IEEE Infocom 2005 Christos Gkantsidis College propose a new scheme for content distribution of large files that is based on network coding. With network coding, each node of the distribution network is able to generate and transmit encoded blocks

  12. Distributed Compressed Sensing in Dynamic Networks

    E-Print Network [OSTI]

    Eldar, Yonina

    Distributed Compressed Sensing in Dynamic Networks Stacy Patterson Department of Computer Science theoretical results to develop a distributed version of IHT for dynamic networks. Evaluations show that our throughout the network, it is desirable to perform this recovery within the network in a distributed fashion

  13. Entanglement Distribution in Optical Networks

    E-Print Network [OSTI]

    Alex Ciurana; Vicente Martin; Jesus Martinez-Mateo; Bernhard Schrenk; Momtchil Peev; Andreas Poppe

    2014-09-21T23:59:59.000Z

    The ability to generate entangled photon-pairs over a broad wavelength range opens the door to the simultaneous distribution of entanglement to multiple users in a network by using centralized sources and flexible wavelength-division multiplexing schemes. Here we show the design of a metropolitan optical network consisting of tree-type access networks whereby entangled photon-pairs are distributed to any pair of users, independent of their location. The network is constructed employing commercial off-the-shelf components and uses the existing infrastructure, which allows for moderate deployment costs. We further develop a channel plan and a network-architecture design to provide a direct optical path between any pair of users, thus allowing classical and one-way quantum communication as well as entanglement distribution. This allows the simultaneous operation of multiple quantum information technologies. Finally, we present a more flexible backbone architecture that pushes away the load limitations of the original network design by extending its reach, number of users and capabilities.

  14. Distributed Broadcasting and Mapping Protocols in Directed Anonymous Networks

    E-Print Network [OSTI]

    Bruck, Jehoshua (Shuki)

    Distributed Broadcasting and Mapping Protocols in Directed Anonymous Networks Michael Langberg is to create distributed protocols that reduce the uncertainty by distributing the knowledge of the network anonymous networks. Keywords: Anonymous networks, directed networks, distributed protocols. 1 Introduction

  15. Distributed Network Monitoring with Bounded Link Utilization in IP Networks

    E-Print Network [OSTI]

    Li, Li Erran

    1 Distributed Network Monitoring with Bounded Link Utilization in IP Networks Li Li Center multiple pollers located at different points in the network. However, using distributed pollers could for Networking Research Lucent Bell Labs erranlli@dnrc.bell-labs.com Marina Thottan Center for Networking

  16. On parton distributions in a photon gas

    E-Print Network [OSTI]

    I. Alikhanov

    2009-06-19T23:59:59.000Z

    In some cases it may be useful to know parton distributions in a photon gas. This may be relevant, e.g., for the analysis of interactions of high energy cosmic ray particles with the cosmic microwave background radiation. The latter can be considered as a gas of photons with an almost perfect blackbody spectrum. An approach to finding such parton distributions is described. The survival probability of ultra-high energy neutrinos traveling through this radiation is calculated.

  17. Optimal Control of Transient Flow in Natural Gas Networks

    E-Print Network [OSTI]

    Zlotnik, Anatoly; Backhaus, Scott

    2015-01-01T23:59:59.000Z

    We outline a new control system model for the distributed dynamics of compressible gas flow through large-scale pipeline networks with time-varying injections, withdrawals, and control actions of compressors and regulators. The gas dynamics PDE equations over the pipelines, together with boundary conditions at junctions, are reduced using lumped elements to a sparse nonlinear ODE system expressed in vector-matrix form using graph theoretic notation. This system, which we call the reduced network flow (RNF) model, is a consistent discretization of the PDE equations for gas flow. The RNF forms the dynamic constraints for optimal control problems for pipeline systems with known time-varying withdrawals and injections and gas pressure limits throughout the network. The objectives include economic transient compression (ETC) and minimum load shedding (MLS), which involve minimizing compression costs or, if that is infeasible, minimizing the unfulfilled deliveries, respectively. These continuous functional optimiza...

  18. WHAT IS A NETWORK? (Gas and Electricity) A complex, interconnected group or

    E-Print Network [OSTI]

    Wright, Francis

    WHAT IS A NETWORK? (Gas and Electricity) A complex, interconnected group or system Electricity and Gas: A system used to distribute electricity and gas around the world/certain area, by compromising to minimise costs and generate the most electricity and gas as possible, which maximises profits

  19. Distributed downhole drilling network

    DOE Patents [OSTI]

    Hall, David R.; Hall, Jr., H. Tracy; Fox, Joe; Pixton, David S.

    2006-11-21T23:59:59.000Z

    A high-speed downhole network providing real-time data from downhole components of a drilling strings includes a bottom-hole node interfacing to a bottom-hole assembly located proximate the bottom end of a drill string. A top-hole node is connected proximate the top end of the drill string. One or several intermediate nodes are located along the drill string between the bottom-hole node and the top-hole node. The intermediate nodes are configured to receive and transmit data packets transmitted between the bottom-hole node and the top-hole node. A communications link, integrated into the drill string, is used to operably connect the bottom-hole node, the intermediate nodes, and the top-hole node. In selected embodiments, a personal or other computer may be connected to the top-hole node, to analyze data received from the intermediate and bottom-hole nodes.

  20. Gas Network Optimization: A comparison of Piecewise Linear Models

    E-Print Network [OSTI]

    2014-06-22T23:59:59.000Z

    Gas network optimization manages the gas transport by minimizing operating costs and .... This problem represents the transportation process of natural gas. 79.

  1. Environmental Cyberinfrastructure Needs For Distributed Sensor Networks

    E-Print Network [OSTI]

    Hamilton, Michael P.

    1 Environmental Cyberinfrastructure Needs For Distributed Sensor Networks 12-14 August 2003;2 Environmental Cyberinfrastructure Needs for Distributed Sensor Networks A Report from a National Science Cyberinfrastructure Needs for Distributed Sensor Networks: A Report from a National Science Foundation Sponsored

  2. Distributed Online Frequency Assignment in Cellular Networks ?

    E-Print Network [OSTI]

    Devoto, Stephen H.

    Distributed Online Frequency Assignment in Cellular Networks ? (Extended Abstract) Jeannette a general framework for studying distributed online frequency assignment in cellular networks. The problem at the corresponding network cell. In this setting, we present several distributed online algorithms for this problem

  3. Globally Integrated Power and Clock Distribution Network

    E-Print Network [OSTI]

    Friedman, Eby G.

    Globally Integrated Power and Clock Distribution Network Renatas Jakushokas and Eby G. Friedman and clock distribution networks are fundamentally different in terms of signal frequency and current flow signals may be integrated to eliminate the on-chip global clock distribution network. This combined

  4. Properties of real networks: degree distribution

    E-Print Network [OSTI]

    Albert, Réka

    Properties of real networks: degree distribution Nodes with small degrees are most frequent;Degree distributions in networks of science collaborations Coauthor, neurosci. 21. )( kkP Coauthor, HEP (2001) )(kP #12;Metabolic networks have a power-law degree distribution H. Jeong et al., Nature 407, 651

  5. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    utility electricity and natural gas purchases, amortized capital and maintenance costs for distributed generation (

  6. Nonlinear DSTATCOM controller design for distribution network with distributed generation to enhance voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Nonlinear DSTATCOM controller design for distribution network with distributed generation Accepted 19 June 2013 Keywords: Distributed generation Distribution network DSATACOM Partial feedback connected to a distribution network with distributed generation (DG) to regulate the line voltage

  7. On the Synchronization of Networks with Prescribed Degree Distributions

    E-Print Network [OSTI]

    Jost, Jürgen

    On the Synchronization of Networks with Prescribed Degree Distributions Fatihcan M. Atay T for building non-synchronizing networks having a prescribed degree distribution. Index Terms distribution, which converges to a Poisson distribution for large network sizes. The degree distribution

  8. DISTRIBUTED OPPORTUNISTIC TRANSMISSION FOR WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Islam, M. Saif

    DISTRIBUTED OPPORTUNISTIC TRANSMISSION FOR WIRELESS SENSOR NETWORKS Qing Zhao and Lang Tong School Strategy We consider the problem of information retrieval in sensor networks with mobile access points on Communica- tion and Networks under Grant DAAD19-01-2-0011. ¢ Fig. 1: Sensor networks with mobile access

  9. Fracture Modeling and Flow Behavior in Shale Gas Reservoirs Using Discrete Fracture Networks

    E-Print Network [OSTI]

    Ogbechie, Joachim Nwabunwanne

    2012-02-14T23:59:59.000Z

    Gen and NFflow) for fracture modeling of a shale gas reservoir and also studies the interaction of the different fracture properties on reservoir response. The most important results of the study are that a uniform fracture network distribution and fracture...

  10. Panel 2, Hydrogen Delivery in the Natural Gas Pipeline Network

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

    in the Natural Gas Pipeline Network DOE'S HYDROGEN ENERGY STORAGE FOR GRID AND TRANSPORTATION SERVICES WORKSHOP Sacramento, CA May 14, 2014 Brian Weeks Gas Technology Institute 2 2...

  11. Optimization Techniques for the Brazilian Natural Gas Network ...

    E-Print Network [OSTI]

    2013-06-04T23:59:59.000Z

    Jun 4, 2013 ... Brazilian natural gas network. A stochastic approach to address uncertainties related to the gas demand is considered. Representing.

  12. COST-CAUSALITY BASED TARIFFS FOR DISTRIBUTION NETWORKS WITH DISTRIBUTED

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    technologies . . . . . . . . . . . . . . . . . . . . . . 11 1.3.6 The role of natural gas and petroleum prices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.3.1 Reciprocating engines . . . . . . . . . . . . . . . . . . . . . . . 9 1.3.2 Simple cycle gas (security of supply) . . . . . . . . 14 1.4.3 Impact of DG on network losses and usage

  13. Blending Hydrogen into Natural Gas Pipeline Networks: A Review...

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

    Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues The United States has 11...

  14. DISTRIBUTED CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. 1 Distributed Connectivity Control

    E-Print Network [OSTI]

    Zavlanos, Michael

    DISTRIBUTED CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. 1 Distributed Connectivity Control of distributed motion algorithms that guarantee connectivity of the overall network. In this paper, we address CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. sufficient for global connectedness. Distributed

  15. Oil and Gas CDT Gas hydrate distribution on tectonically active continental

    E-Print Network [OSTI]

    Henderson, Gideon

    Oil and Gas CDT Gas hydrate distribution on tectonically active continental margins: Impact on gas. Gregory F. Moore, University of Hawaii (USA) http://www.soest.hawaii.edu/moore/ Key Words Gas Hydrates, Faults, Fluid Flow, gas prospectivity Overview Fig. 1. Research on gas hydrates is often undertaken

  16. Distributed Connectivity of Wireless Networks

    E-Print Network [OSTI]

    Halldorsson, Magnus M

    2012-01-01T23:59:59.000Z

    We consider the problem of constructing a communication infrastructure from scratch, for a collection of identical wireless nodes. Combinatorially, this means a) finding a set of links that form a strongly connected spanning graph on a set of $n$ points in the plane, and b) scheduling it efficiently in the SINR model of interference. The nodes must converge on a solution in a distributed manner, having no means of communication beyond the sole wireless channel. We give distributed connectivity algorithms that run in time $O(poly(\\log \\Delta, \\log n))$, where $\\Delta$ is the ratio between the longest and shortest distances among nodes. Given that algorithm without prior knowledge of the instance are essentially limited to using uniform power, this is close to best possible. Our primary aim, however, is to find efficient structures, measured in the number of slots used in the final schedule of the links. Our main result is algorithms that match the efficiency of centralized solutions. Specifically, the networks...

  17. Model documentation: Natural gas transmission and distribution model of the National Energy Modeling System. Volume 1

    SciTech Connect (OSTI)

    NONE

    1995-02-17T23:59:59.000Z

    The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. NEMS was developed in the Office of integrated Analysis and Forecasting of the Energy information Administration (EIA). NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the EIA and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. The NGTDM is the model within the NEMS that represents the transmission, distribution, and pricing of natural gas. The model also includes representations of the end-use demand for natural gas, the production of domestic natural gas, and the availability of natural gas traded on the international market based on information received from other NEMS models. The NGTDM determines the flow of natural gas in an aggregate, domestic pipeline network, connecting domestic and foreign supply regions with 12 demand regions. The methodology employed allows the analysis of impacts of regional capacity constraints in the interstate natural gas pipeline network and the identification of pipeline capacity expansion requirements. There is an explicit representation of core and noncore markets for natural gas transmission and distribution services, and the key components of pipeline tariffs are represented in a pricing algorithm. Natural gas pricing and flow patterns are derived by obtaining a market equilibrium across the three main elements of the natural gas market: the supply element, the demand element, and the transmission and distribution network that links them. The NGTDM consists of four modules: the Annual Flow Module, the Capacity F-expansion Module, the Pipeline Tariff Module, and the Distributor Tariff Module. A model abstract is provided in Appendix A.

  18. Gas Distribution Modeling using Sparse Gaussian Process Mixture Models

    E-Print Network [OSTI]

    Stachniss, Cyrill

    Gas Distribution Modeling using Sparse Gaussian Process Mixture Models Cyrill Stachniss1 Christian-- In this paper, we consider the problem of learning a two dimensional spatial model of a gas distribution with a mobile robot. Building maps that can be used to accurately predict the gas concentration at query

  19. Innovation flow through social networks: Productivity distribution

    E-Print Network [OSTI]

    T. Di Matteo; T. Aste; M. Gallegati

    2004-06-19T23:59:59.000Z

    A detailed empirical analysis of the productivity of non financial firms across several countries and years shows that productivity follows a non-Gaussian distribution with power law tails. We demonstrate that these empirical findings can be interpreted as consequence of a mechanism of exchanges in a social network where firms improve their productivity by direct innovation or/and by imitation of other firm's technological and organizational solutions. The type of network-connectivity determines how fast and how efficiently information can diffuse and how quickly innovation will permeate or behaviors will be imitated. From a model for innovation flow through a complex network we obtain that the expectation values of the productivity level are proportional to the connectivity of the network of links between firms. The comparison with the empirical distributions reveals that such a network must be of a scale-free type with a power-law degree distribution in the large connectivity range.

  20. Voltage Management of Networks with Distributed Generation. 

    E-Print Network [OSTI]

    O'Donnell, James

    2008-01-01T23:59:59.000Z

    At present there is much debate about the impacts and benefits of increasing the amount of generation connected to the low voltage areas of the electricity distribution network. The UK government is under political ...

  1. Distributed A Wireless Sensor Network for

    E-Print Network [OSTI]

    Distributed Computing A Wireless Sensor Network for Orienteering Competitions Master's Thesis-wave Monopole Antennas . . . . . . . . . . . . . 13 5 MAC and Routing in Wireless Sensor Networks 14 5.1 Medium and waterproof cases free of charge. i #12;Abstract This thesis deals with the development of a wireless sensor

  2. The neural network approach to parton distributions

    E-Print Network [OSTI]

    Andrea Piccione; Joan Rojo; for the NNPDF Collaboration

    2005-10-05T23:59:59.000Z

    We introduce the neural network approach to global fits of parton distrubution functions. First we review previous work on unbiased parametrizations of deep-inelastic structure functions with faithful estimation of their uncertainties, and then we summarize the current status of neural network parton distribution fits.

  3. Neural network approach to parton distributions fitting

    E-Print Network [OSTI]

    Andrea Piccione; Joan Rojo; for the NNPDF Collaboration

    2005-10-18T23:59:59.000Z

    We will show an application of neural networks to extract information on the structure of hadrons. A Monte Carlo over experimental data is performed to correctly reproduce data errors and correlations. A neural network is then trained on each Monte Carlo replica via a genetic algorithm. Results on the proton and deuteron structure functions, and on the nonsinglet parton distribution will be shown.

  4. ,"New York Natural Gas Pipeline and Distribution Use Price (Dollars...

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

    Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New York Natural Gas Pipeline and Distribution Use Price (Dollars per Thousand Cubic...

  5. Hierarchical Wireless Network Architecture for Distributed Applications Zeashan Hameed Khan

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hierarchical Wireless Network Architecture for Distributed Applications Zeashan Hameed Khan Control-- This paper describes a hierarchical wireless network architecture for real time remote coordination, Distributed monitoring, QoS adaptation, Realtime coordination I. INTRODUCTION Wireless communication networks

  6. Optimization for Design and Operation of Natural Gas Transmission Networks 

    E-Print Network [OSTI]

    Dilaveroglu, Sebnem 1986-

    2012-08-22T23:59:59.000Z

    designing and operating the network. A well-designed network helps natural gas companies minimize the costs while increasing the customer service level. The aim of the study is to determine the optimum installation scheduling and locations of new pipelines...

  7. Optimization for Design and Operation of Natural Gas Transmission Networks

    E-Print Network [OSTI]

    Dilaveroglu, Sebnem 1986-

    2012-08-22T23:59:59.000Z

    and compressor stations. On an existing network, the model also optimizes the total flow through pipelines that satisfy demand to determine the best purchase amount of gas. A mixed integer nonlinear programming model for steady-state natural gas transmission...

  8. High Detail Stationary Optimization Models for Gas Networks

    E-Print Network [OSTI]

    Martin Schmidt

    2014-10-15T23:59:59.000Z

    Oct 15, 2014 ... Abstract: Due to strict regulatory rules in combination with complex nonlinear physics, major gas network operators in Germany and Europe ...

  9. Document management guidelines for distributed project networks

    E-Print Network [OSTI]

    Hameri, A P; Høimyr, Nils-Joar

    1999-01-01T23:59:59.000Z

    This paper provides the project engineer with guidelines or a checklist on tasks that must be considered, defined and documented before the project can successfully implement a document management system in geographically distributed project environment. Topics ranging from configuration management, approval process, document types, user administration and document naming are covered. The underlying cases of the paper are that of CERN (European Laboratory for Particle Physics) and its latest accelerator project, together with the Nordisk Industrifond -funded Connecting Distributed Competencies (NI#: 98082) project, with a focus on distributed shipbuilding processes. Keywords: distributed project management, product data management, networking, document management, virtual workspaces

  10. Low Computation and Low Latency Algorithms for Distributed Sensor Network

    E-Print Network [OSTI]

    Cevher, Volkan

    Low Computation and Low Latency Algorithms for Distributed Sensor Network Initialization M. Borkar distribution can be determined in a distributed heterogeneous sensor network with reduced subspace distribution for networks with a variety of sensor types as long as the collective set of measurements from all

  11. Resilient Core Networks for Energy Distribution

    SciTech Connect (OSTI)

    Kuntze, Nicolai; Rudolph, Carsten; Leivesley, Sally; Manz, David O.; Endicott-Popovsky, Barbara E.

    2014-07-28T23:59:59.000Z

    Abstract—Substations and their control are crucial for the availability of electricity in today’s energy distribution. Ad- vanced energy grids with Distributed Energy Resources require higher complexity in substations, distributed functionality and communication between devices inside substations and between substations. Also, substations include more and more intelligent devices and ICT based systems. All these devices are connected to other systems by different types of communication links or are situated in uncontrolled environments. Therefore, the risk of ICT based attacks on energy grids is growing. Consequently, security measures to counter these risks need to be an intrinsic part of energy grids. This paper introduces the concept of a Resilient Core Network to interconnected substations. This core network provides essen- tial security features, enables fast detection of attacks and allows for a distributed and autonomous mitigation of ICT based risks.

  12. EIA - Natural Gas Pipeline Network - Natural Gas Supply Basins...

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

    Corridors About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates U.S. Natural Gas Supply Basins Relative to Major Natural...

  13. Backtracking in Distributed Constraint Networks Youssef Hamadi

    E-Print Network [OSTI]

    Hamadi, Yousseff

    ). The basic method to search for solu- tion in a constraint network is backtrack search, which performs a systematic exploration of the search tree until it finds an instantiation of values to variables search algorithms among several agents to speed up the running time of central algorithms. We distribute

  14. Distributed Power Control Algorithms for Wireless Networks

    E-Print Network [OSTI]

    Bertsekas, Dimitri

    Distributed Power Control Algorithms for Wireless Networks Cynara C. Wu Dimitri P. Bertsekas cynara Cambridge, MA 02139, USA Abstract Power control has been shown to be an e ective way to increase capacity in wireless systems. In previous work on power control, it has been assumed that power levels can be assigned

  15. Energy Balanced Chain in Distributed Sensor Networks

    E-Print Network [OSTI]

    Howitt, Ivan

    Energy Balanced Chain in Distributed Sensor Networks Ivan Howitt Electrical & Computer Engineering because of their higher traffic. This paper suggests an energy balanced chain (EBC) which can efficiently the energy balance optimization problem in terms of the segmentation space. By adjusting the transmission

  16. EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline...

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

    Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Thirty Largest U.S. Interstate Natural...

  17. Electricity Distribution Networks: Investment and Regulation, and Uncertain Demand

    E-Print Network [OSTI]

    Jamasb, Tooraj; Marantes, Cristiano

    2011-01-31T23:59:59.000Z

    " and describes a network investment assessment model developed as a tool to identify and assess the investment requirements of distribution networks. A broadening of the scope of network investments to include demand-related measures that can reduce the need...

  18. Distributed Estimation in Sensor Networks with Modeling Uncertainty

    E-Print Network [OSTI]

    Zhou, Qing

    2013-05-07T23:59:59.000Z

    A major issue in distributed wireless sensor networks (WSNs) is the design of efficient distributed algorithms for network-wide dissemination of information acquired by individual sensors, where each sensor, by itself, is unable to access enough...

  19. affects lysosomal distribution: Topics by E-print Network

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

    Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads Engineering Websites Summary: and induction motor loads...

  20. advanced distributed measurements: Topics by E-print Network

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

    the in situ water distribution within the gas 69 MEASUREMENT OF FLOW FIELD AND WALL TEMPERATURE DISTRIBUTION IN Physics Websites Summary: MEASUREMENT OF FLOW FIELD AND WALL...

  1. Distributed Computing for Plug-and-Play Network Service Configuration

    E-Print Network [OSTI]

    White, Tony

    Distributed Computing for Plug-and-Play Network Service Configuration Abstract Configuration, Distributed Computing, Plug-and-Play, PnP, Mobile Agents, Jini, CORBA 1. Introduction Network Management advertisement over the network. The process of service provisioning is completed with arranging, distributing

  2. Distributed Medium Access Control for Next Generation CDMA Wireless Networks

    E-Print Network [OSTI]

    Zhuang, Weihua

    Distributed Medium Access Control for Next Generation CDMA Wireless Networks Hai Jiang, Princeton wireless networks are expected to have a simple infrastructure with distributed control. In this article, we consider a generic distributed network model for future wireless multi- media communications

  3. Distributed Computation in Dynamic Networks : Technical Fabian Kuhn1

    E-Print Network [OSTI]

    Schindelhauer, Christian

    Distributed Computation in Dynamic Networks : Technical Report Fabian Kuhn1 Nancy Lynch2 Rotem 02139, USA Abstract In this paper we investigate distributed computation in dynamic networks in which in the theory of distributed computing in wireless, mobile and dy- namic networks. #12;1 Introduction The study

  4. Load Distribution in Large Scale Network Monitoring Infrastructures

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Load Distribution in Large Scale Network Monitoring Infrastructures Josep Sanju`as-Cuxart, Pere to build a scalable, distributed passive network mon- itoring system that can run several arbitrary the principal research challenges behind building a distributed network monitoring system to support

  5. Universal Routing and Performance Assurance for Distributed Networks

    E-Print Network [OSTI]

    Sha, Edwin

    Universal Routing and Performance Assurance for Distributed Networks Kevin F. Chen, Edwin H.-M. Sha a routing perspective the fat-stack is efficient and is suitable for use as a baseline distributed network and as a crucial benchmark architecture for evaluating the performance of specific distributed networks. We show

  6. Defense of Trust Management Vulnerabilities in Distributed Networks

    E-Print Network [OSTI]

    Sun, Yan Lindsay

    Defense of Trust Management Vulnerabilities in Distributed Networks Yan (Lindsay) Sun , Zhu Han into distributed networks, the vulnerabilities in trust establishment methods, and the defense mechanisms. Five networks inherently rely on cooper- ation among distributed entities. However, coopera- tion is fragile

  7. Distributed Average Consensus in Sensor Networks with Random Link Failures

    E-Print Network [OSTI]

    Moura, José

    Distributed Average Consensus in Sensor Networks with Random Link Failures Soummya Kar Department: soummyakgandrew.cmu.edu Abstract We study the impact of the topology of a sensor network on distributed average in terms of a moment of the distribution of the norm of a function of the network graph Laplacian matrix L

  8. System Designs for Adaptive, Distributed Network Monitoring and Control

    E-Print Network [OSTI]

    Baras, John S.

    1 System Designs for Adaptive, Distributed Network Monitoring and Control H. Li, S. Yang, H. Xi.umd.edu Abstract We present system designs for adaptive, distributed network monitoring and control. The ideas are to distribute some processing intelligence to network elements, and to design a dynamic interface

  9. Distributed Packet-Level Simulation for BGP Networks under Genesis

    E-Print Network [OSTI]

    Varela, Carlos

    Distributed Packet-Level Simulation for BGP Networks under Genesis Yu Liu and Boleslaw K- ulation. Parallel and distributed network simulation techniques make it possible to utilize the power the efficiency and scalability of these sim- ulations. We developed a novel distributed network simula- tion

  10. Distributed Wavelet De-Noising for Sensor Networks Raymond Wagner

    E-Print Network [OSTI]

    Distributed Wavelet De-Noising for Sensor Networks Raymond Wagner Dept. of Electrical and Computer-- Wireless sensor networks provide a natural appli- cation area for distributed data processing algorithms briefly review the details of a distributed wavelet processing protocol for sensor networks based

  11. Distributed Wavelet DeNoising for Sensor Networks Raymond Wagner

    E-Print Network [OSTI]

    Distributed Wavelet De­Noising for Sensor Networks Raymond Wagner Dept. of Electrical and Computer Abstract--- Wireless sensor networks provide a natural appli­ cation area for distributed data processing, we briefly review the details of a distributed wavelet processing protocol for sensor networks based

  12. Why Hierarchical Key Distribution is Appropriate for Multicast Networks

    E-Print Network [OSTI]

    Zheng, Yuliang

    Why Hierarchical Key Distribution is Appropriate for Multicast Networks Chandana Gamage, Jussipekka rationale for many key distribution schemes for multicast networks are based on heuristic arguments on e of multicast group formation and network growth to look at the selection of a key distribution scheme from

  13. Natural Gas Transmission and Distribution Module This

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

    They relate to (1) structural components of the model, (2) capacity expansion and pricing of transmission and distribution services, (3) Arctic pipelines, and (4) imports...

  14. Natural Gas Transmission and Distribution Module

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

    They relate to (1) structural components of the model, (2) capacity expansion and pricing of transmission and distribution services, (3) Arctic pipelines, and (4) imports...

  15. Natural Gas Transmission and Distribution Model of the National Energy Modeling System. Volume 1

    SciTech Connect (OSTI)

    NONE

    1998-01-01T23:59:59.000Z

    The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. The NGTDM is the model within the NEMS that represents the transmission, distribution, and pricing of natural gas. The model also includes representations of the end-use demand for natural gas, the production of domestic natural gas, and the availability of natural gas traded on the international market based on information received from other NEMS models. The NGTDM determines the flow of natural gas in an aggregate, domestic pipeline network, connecting domestic and foreign supply regions with 12 demand regions. The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic design, provides detail on the methodology employed, and describes the model inputs, outputs, and key assumptions. Subsequent chapters of this report provide: an overview of NGTDM; a description of the interface between the NEMS and NGTDM; an overview of the solution methodology of the NGTDM; the solution methodology for the Annual Flow Module; the solution methodology for the Distributor Tariff Module; the solution methodology for the Capacity Expansion Module; the solution methodology for the Pipeline Tariff Module; and a description of model assumptions, inputs, and outputs.

  16. advanced gas cooled: Topics by E-print Network

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

    distribution. The WR model provides other observable features: a correlation of the pressure ratio (WRs to thermal IC gas) with the inner cluster temperature Tinner, a...

  17. Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks

    E-Print Network [OSTI]

    Moura, José

    Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks Saeed A study distributed detection in a sensor network where the sensors cooperate by exchanging information distributed decision making algorithms in the network. This is a difficult problem since it corresponds

  18. Pipeline safety. Information on gas distribution system operators reporting unaccounted for gas

    SciTech Connect (OSTI)

    Not Available

    1986-02-01T23:59:59.000Z

    According to Department of Transportation records, 92 of the 1491 gas distribution system operators reported high levels of unaccounted for gas (unaccounted for gas is the difference between the amount of gas purchased and sold) for 1984, the latest year for which data were available. Of the 92 gas system operators, 64 were municipals (gas systems owned by a governmental entity, such as a city or county) and 28 were nonmunicipals. Based on the data we reviewed, these 92 gas systems did not report any accidents during calendar year 1984. Part I provides more details on the unaccounted for gas of municipal gas systems. Federal and industry officials consider that unaccounted for gas in excess of 15% of gas purchases high and worthy of investigation. High levels of unaccounted for gas can occur for a number of reasons, including errors in metering and billing, not accounting for gas used by city or company facilities, and leaking gas pipelines. While it may, a leak does not always indicate a safety problem. For example, a slow leak in an open area may not be a safety hazard. The Secretary has the authority to regulate any liquid deemed hazardous when transported by pipeline, and therefore could regulate hazardous liquids not currently regulated including methanol and carbon dioxide. However, the Department of Transportation has no plans to regulate any additional liquids. Part II provides more details. 4 figs., 2 tabs.

  19. Determination of leakage and unaccounted-for gas-distribution

    SciTech Connect (OSTI)

    Wallace, J.

    1984-04-01T23:59:59.000Z

    It was leakage from ill fitting pipes and the resultant danger of explosions, fires, and asphxiation that delayed for a long time the use of gas in private homes. The industry has solved the problem of ill fitting pipes but safety, profits, and the conservation of a natural resource still demands a keen concern over leakage and unaccounted-for gas. The generally accepted definition of unaccountedfor gas is simple. It is the difference between the amount of gas supplied to and taken out of a piping system. By this definition, leakage is only a part of unaccounted-for gas, although the terms are sometimes used synonymously. It is the need to determine the ''tightness'' or freedom from leaks of the distribution system that requires an operator to evaluate all other components of unaccounted-for gas.

  20. Smart Sensing Networks for Renewables, Oil & Gas | GE Global...

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

    Smart Sensing Networks for Renewables and Oil & Gas Fields Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in...

  1. Molecular Gas Distribution in Double-Nucleus Ultraluminous Infrared Galaxies

    E-Print Network [OSTI]

    A. S. Evans; J. A. Surace; J. M. Mazzarella; D. B Sanders

    1999-12-22T23:59:59.000Z

    Millimeter (CO) observations of 5 double-nucleus ultraluminous infrared galaxy (ULIG) mergers are presented. With nuclear separations of 3-5 kpc, these galaxies are in the ``intermediate'' stages of the merger process. A preliminary comparison of the distribution of molecular gas (the likely fuel source for both starbursts and active galactic nuclei: AGN) shows a tendency for molecular gas to be associated with the AGN nucleus of ULIGs with ``warm'', Seyfert-like infrared colors ($f_{25 microns}/f_{60 microns} >~ 0.20) and associated with both stellar nuclei of ULIGs with ``cool'' infrared colors (f_{25 microns} /f_{60 microns} < 0.2). Studies of ULIGs with a wide range of nuclear separations using the high resolution and increased sensitivity of ALMA will provide a larger statistical sample with which the gas distribution, molecular gas masses, and densities can be determined as a function of the evolutionary stage, starburst and AGN activity, and lookback time.

  2. On Distributed Fault-Tolerant Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Huang, Yinlun

    On Distributed Fault-Tolerant Detection in Wireless Sensor Networks Xuanwen Luo, Student Member problems for distributed fault-tolerant detection in wireless sensor networks: 1) how to address both it possible to perform energy- efficient fault-tolerant detection in a wireless sensor network. Index Terms

  3. Introduction to Network Analysis 15 Generating Functions and Degree Distributions

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    Introduction to Network Analysis 15 Generating Functions and Degree Distributions #12;Introduction to Network Analysis 16 Polylogarithm drawn values add to a specific sum #12;Introduction to Network Analysis-loops, multi-edges #12;Introduction to Network Analysis 18 Configuration Model Conclusion: expected number

  4. Distribution of entanglement in large-scale quantum networks

    E-Print Network [OSTI]

    S. Perseguers; G. J. Lapeyre Jr; D. Cavalcanti; M. Lewenstein; A. Acín

    2013-05-06T23:59:59.000Z

    The concentration and distribution of quantum entanglement is an essential ingredient in emerging quantum information technologies. Much theoretical and experimental effort has been expended in understanding how to distribute entanglement in one-dimensional networks. However, as experimental techniques in quantum communication develop, protocols for multi-dimensional systems become essential. Here, we focus on recent theoretical developments in protocols for distributing entanglement in regular and complex networks, with particular attention to percolation theory and network-based error correction.

  5. The neural network approach to parton distribution functions

    E-Print Network [OSTI]

    Joan Rojo

    2006-07-11T23:59:59.000Z

    We introduce the neural network approach to the parametrization of parton distributions. After a general introduction, we present in detail our approach to parametrize experimental data, based on a combination of Monte Carlo methods and neural networks. We apply this strategy first in three different cases: the proton structure function, hadronic tau decays and B meson decay spectra. Finally we describe the neural network approach applied to the parametrization of parton distribution functions, and present results on the nonsinglet parton distribution.

  6. aware distributed applications: Topics by E-print Network

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

    CiteSeer Summary: Abstract This paper describes three software applications for distribution network load forecasting in a Smart Grid environment: (i) short-term feeder load...

  7. Sensor Networks for Monitoring and Control of Water Distribution Systems

    E-Print Network [OSTI]

    Whittle, Andrew

    Water distribution systems present a significant challenge for structural monitoring. They comprise a complex network of pipelines buried underground that are relatively inaccessible. Maintaining the integrity of these ...

  8. assessing drug distribution: Topics by E-print Network

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

    Goldie Reported 106 The economics of US greenhouse gas emissions reduction policy : assessing distributional effects across households and the 50 United States using a recursive...

  9. Gas-Fired Distributed Energy Resource Technology Characterizations

    SciTech Connect (OSTI)

    Goldstein, L.; Hedman, B.; Knowles, D.; Freedman, S. I.; Woods, R.; Schweizer, T.

    2003-11-01T23:59:59.000Z

    The U. S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) is directing substantial programs in the development and encouragement of new energy technologies. Among them are renewable energy and distributed energy resource technologies. As part of its ongoing effort to document the status and potential of these technologies, DOE EERE directed the National Renewable Energy Laboratory to lead an effort to develop and publish Distributed Energy Technology Characterizations (TCs) that would provide both the department and energy community with a consistent and objective set of cost and performance data in prospective electric-power generation applications in the United States. Toward that goal, DOE/EERE - joined by the Electric Power Research Institute (EPRI) - published the Renewable Energy Technology Characterizations in December 1997.As a follow-up, DOE EERE - joined by the Gas Research Institute - is now publishing this document, Gas-Fired Distributed Energy Resource Technology Characterizations.

  10. Interconnecting PV on New York City's Secondary Network Distribution System

    SciTech Connect (OSTI)

    Anderson, K.; Coddington, M.; Burman, K.; Hayter, S.; Kroposki, B.; Watson, A.

    2009-12-01T23:59:59.000Z

    This study describes technical assistance provided by NREL to help New York City and Con Edison improve the interconnection of distributed PV systems on a secondary network distribution system.

  11. Voltage Control of Distribution Networks with Distributed Generation using Reactive Power

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Voltage Control of Distribution Networks with Distributed Generation using Reactive Power to control voltage of distribution networks with DG using reactive power compensation approach. In this paper profile within the specified limits, it is essential to regulate the reactive power of the compensators

  12. Fast Distributed Network Decompositions and Baruch Awerbuch y

    E-Print Network [OSTI]

    Cowen, Lenore

    in the distributed network model, particularly a strong form of network decomposition known as a sparse neighborhood to the modular design of e cient network algorithms Pel93, AP90b, AP90a, AR91, BFR92]. Using this method control problems (such as shortest paths AR91], job scheduling and load balancing AKP92], broadcast

  13. Localized Bridging Centrality for Distributed Network Analysis Soumendra Nanda

    E-Print Network [OSTI]

    of a network. We provide below a list of questions asked from a system administrator's point of view, that we to manage a mesh network in a more effective manner. While 2 #12;the system administrator is primarily askedLocalized Bridging Centrality for Distributed Network Analysis Soumendra Nanda and David Kotz

  14. Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks

    E-Print Network [OSTI]

    Bystroff, Chris

    Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks Seyit A. C¸amtepe1 of the most challenging security issues in wireless sensor networks where sensor nodes are randomly scattered-chain sizes. 1 Introduction and Problem Definition In this work, we consider a sensor network in which sensor

  15. Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks

    E-Print Network [OSTI]

    Bystroff, Chris

    Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks Seyit A. C� amtepe of the most challenging security issues in wireless sensor networks where sensor nodes are randomly scattered­chain sizes. 1 Introduction and Problem Definition In this work, we consider a sensor network in which sensor

  16. Effective Scheduling for Coded Distributed Storage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Boucherie, Richard J.

    Effective Scheduling for Coded Distributed Storage in Wireless Sensor Networks Jan-Willem van Bloem in a decentralized fashion for any rate below this maximum. 1 Introduction In wireless sensor networks, reliable data storage is essential for coping with fail- ures. Wireless sensor networks consist of cooperating devices

  17. Dynamic server selection using fuzzy inference in content distribution networks

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    Dynamic server selection using fuzzy inference in content distribution networks Lin Cai, Jun Ye been designed and deployed to distribute content to different cache servers, and to transparently and dynamically redirect user requests to the cache servers according to the latest network and server status

  18. Introduction to Network Analysis 21 Generating Functions and Degree Distributions

    E-Print Network [OSTI]

    Safro, Ilya

    Introduction to Network Analysis 21 Generating Functions and Degree Distributions we add zero term because of infinity #12;Introduction to Network Analysis 22 Number of second neighbors of a vertex Probability of having k second neighbors given m first neighbors degree distribution Prob excess degrees of m

  19. Localized Bridging Centrality for Distributed Network Analysis

    E-Print Network [OSTI]

    Kotz, David

    network administrators identify critical nodes that are important for the robustness of the network administrator (sysadmin) manage a wireless mesh network or would allow an automated management system understand a system administrator to manage a mesh network in a more effective manner. While the system administrator

  20. Synchronous Ultra-Wide Band Wireless Sensors Networks for oil and gas exploration

    E-Print Network [OSTI]

    Savazzi, Stefano

    Synchronous Ultra-Wide Band Wireless Sensors Networks for oil and gas exploration Stefano Savazzi1 of new oil and gas reservoir. Seismic exploration requires a large number (500 ÷ 2000 nodes, MAC and network layer to develop wireless sensors networks tailored for oil (and gas) exploration

  1. ISDN applications at Tenneco Gas. [Integrated Services Digital Network

    SciTech Connect (OSTI)

    Roy, R.

    1990-04-01T23:59:59.000Z

    Tenneco Gas and Tenneco Inc. have discrete Information Services departments with separate computer services organizations; however, Tenneco Gas supports all telecommunication functions. Tenneco Gas has standardized intelligent desk-top terminals for a major portion of its business information strategy. The data communication application requirements have spawned a variety of networks that range from departmental high-speed bus architecture networks to star networks providing Personal Computer (PC) connectivity for host processing systems and, finally, to switched networks interfacing external databases. The evolution from analog to Integrated Services Digital Network (ISDN) telecommunication services became a reality for Tenneco during the summer of 1988. Early in May 1988, the local exchange carrier, Southwestern Bell Telephone Company, migrated Tenneco, as well as other customers, from a No. 1AESS analog switching system to a No. 5ESS digital switching system. Through the course of the summer, Tenneco completed the conversion of approximately 2,200 multi-button analog telephone sets and associated lines to ISDN sets with full-featured basic rate interfaces.

  2. Distributed Fiber Optic Gas Sensing for Harsh Environment

    SciTech Connect (OSTI)

    Juntao Wu

    2008-03-14T23:59:59.000Z

    This report summarizes work to develop a novel distributed fiber-optic micro-sensor that is capable of detecting common fossil fuel gases in harsh environments. During the 32-month research and development (R&D) program, GE Global Research successfully synthesized sensing materials using two techniques: sol-gel based fiber surface coating and magnetron sputtering based fiber micro-sensor integration. Palladium nanocrystalline embedded silica matrix material (nc-Pd/Silica), nanocrystalline palladium oxides (nc-PdO{sub x}) and palladium alloy (nc-PdAuN{sub 1}), and nanocrystalline tungsten (nc-WO{sub x}) sensing materials were identified to have high sensitivity and selectivity to hydrogen; while the palladium doped and un-doped nanocrystalline tin oxide (nc-PdSnO{sub 2} and nc-SnO{sub 2}) materials were verified to have high sensitivity and selectivity to carbon monoxide. The fiber micro-sensor comprises an apodized long-period grating in a single-mode fiber, and the fiber grating cladding surface was functionalized by above sensing materials with a typical thickness ranging from a few tens of nanometers to a few hundred nanometers. GE found that the morphologies of such sensing nanomaterials are either nanoparticle film or nanoporous film with a typical size distribution from 5-10 nanometers. nc-PdO{sub x} and alloy sensing materials were found to be highly sensitive to hydrogen gas within the temperature range from ambient to 150 C, while nc-Pd/Silica and nc-WO{sub x} sensing materials were found to be suitable to be operated from 150 C to 500 C for hydrogen gas detection. The palladium doped and un-doped nc-SnO{sub 2} materials also demonstrated sensitivity to carbon monoxide gas at approximately 500 C. The prototyped fiber gas sensing system developed in this R&D program is based on wavelength-division-multiplexing technology in which each fiber sensor is identified according to its transmission spectra features within the guiding mode and cladding modes. The interaction between the sensing material and fossil fuel gas results in a refractive index change and optical absorption in the sensing layer. This induces mode coupling strength and boundary conditions changes and thereby shifts the central wavelengths of the guiding mode and cladding modes propagation. GE's experiments demonstrated that such an interaction between the fossil fuel gas and sensing material not only shifts the central wavelengths of the guide mode and cladding modes propagation, but also alters their power loss characteristics. The integrated fiber gas sensing system includes multiple fiber gas sensors, fiber Bragg grating-based temperature sensors, fiber optical interrogator, and signal processing software.

  3. Research Study on Convex Optimization of Power Distribution Networks

    E-Print Network [OSTI]

    Lavaei, Javad

    communication and control technology impels the transformation of power distribution system in both its. To solve the OPF problem for unbalanced three-phase power distribution systems, Newton-Raphson methods has-bus system in distribution network and structure the mathematical model and performs convex optimization

  4. Computing with Mobile Agents in Distributed Networks

    E-Print Network [OSTI]

    Kranakis, Evangelos

    .......................... 1-12 1.7 Network Decontamination and Black Holes ....... 1-15 Network decontamination · Black holes the decontamination problem and black hole search. 1.2 Modeling Mobile Agents in Distribu

  5. Integrity and access control in untrusted content distribution networks

    E-Print Network [OSTI]

    Fu, Kevin E. (Kevin Edward), 1976-

    2005-01-01T23:59:59.000Z

    A content distribution network (CDN) makes a publisher's content highly available to readers through replication on remote computers. Content stored on untrusted servers is susceptible to attack, but a reader should have ...

  6. Network Formation: Neighborhood Structures, Establishment Costs, and Distributed Learning

    E-Print Network [OSTI]

    Shamma, Jeff S.

    1 Network Formation: Neighborhood Structures, Establishment Costs, and Distributed Learning desirable properties such as connectivity, bounded-hop diameter and efficiency (i.e., minimum number several issues related to energy conservation, information and computational complexity. Thus, recent

  7. SMPL : a network architecture for collaborative distributed services

    E-Print Network [OSTI]

    Rocha, Carols A. (Carlos Andres Rocha Penagos)

    2005-01-01T23:59:59.000Z

    This thesis proposes a network architecture, called SMPL, for the design and development of collaboration-oriented, distributed applications over the Internet. The goal of SMPL is to enable the development of applications ...

  8. Distribution networks consolidation and optimization for a large industrial conglomerate

    E-Print Network [OSTI]

    Sridurongkatum, Phol

    2010-01-01T23:59:59.000Z

    Redesigning the distribution networks for the company's various supply chains to lower the cost of delivering products to customers is crucial to company's competitiveness. Redesign includes changing warehouse locations ...

  9. Adaptive Distributed Resource Allocation in Wireless Sensor Networks

    E-Print Network [OSTI]

    Lim, Hock Beng

    Wireless sensor networks have emerged as a promising technology for a wide range of important applications. A major research challenge in this field is the distributed resource allocation problem, which concerns how the ...

  10. air velocity distribution: Topics by E-print Network

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

    Page Topic Index 1 Carbon isotope evidence for the latitudinal distribution and wind speed dependence of the air-sea gas transfer velocity University of California eScholarship...

  11. Distributed Uplink Scheduling in EV-DO Rev. A Networks

    E-Print Network [OSTI]

    Guerin, Roch

    Distributed Uplink Scheduling in EV-DO Rev. A Networks Ashwin Sridharan (Sprint Nextel) Ramesh Subbaraman, Roch Guérin (ESE, University of Pennsylvania) #12;5/23/2007 Networking 2007 - Atlanta 2 Overview of Problem · Most modern wireless systems ­ Deliver high performance through tight control of transmissions

  12. Remote Stabilization via Communication Networks with a Distributed Control Law

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Remote Stabilization via Communication Networks with a Distributed Control Law Emmanuel Witrant the problem of remote stabilization via communication networks involving some time- varying delays of known average dynamics. This problem arises when the control law is remotely implemented and leads

  13. Lightweight Security Principles for Distributed Multimedia Based Sensor Networks

    E-Print Network [OSTI]

    Kundur, Deepa

    the application of multime- dia security principles for the protection of emerging distributed sensor networks and apply to DSN cybersecurity? To address this issue, we present the following contributions: 1 applications leading to a discussion of its potential role in emerging sensor network applications. 2

  14. Architecture of the Secoqc Quantum Key Distribution network

    E-Print Network [OSTI]

    Mehrdad Dianati; Romain Alleaume

    2006-10-25T23:59:59.000Z

    The European projet Secoqc (Secure Communication based on Quantum Cryptography) aims at developing a global network for unconditionally secure key distribution. This paper specifies the requirements and presents the principles guiding the design of this network, and relevant to its architecture and protocols.

  15. Evaluation and redesign of a company's distribution network

    E-Print Network [OSTI]

    Burgos Fuentes, Sergio Armando

    2004-11-15T23:59:59.000Z

    EVALUATION AND REDESIGN OF A COMPANY?S DISTRIBUTION NETWORK A Record of Study by SERGIO ARMANDO BURGOS FUENTES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of DOCTOR OF ENGINEERING August 2004 Major Subject: Engineering College of Engineering EVALUATION AND REDESIGN OF A COMPANY?S DISTRIBUTION NETWORK A Record of Study by SERGIO ARMANDO BURGOS FUENTES Approved...

  16. Degree-distribution stability of scale-free networks

    E-Print Network [OSTI]

    Zhenting Hou; Xiangxing Kong; Dinghua Shi; Guanrong Chen

    2008-05-09T23:59:59.000Z

    Based on the concept and techniques of first-passage probability in Markov chain theory, this letter provides a rigorous proof for the existence of the steady-state degree distribution of the scale-free network generated by the Barabasi-Albert (BA) model, and mathematically re-derives the exact analytic formulas of the distribution. The approach developed here is quite general, applicable to many other scale-free types of complex networks.

  17. Evaluation and redesign of a company's distribution network 

    E-Print Network [OSTI]

    Burgos Fuentes, Sergio Armando

    2004-11-15T23:59:59.000Z

    EVALUATION AND REDESIGN OF A COMPANY?S DISTRIBUTION NETWORK A Record of Study by SERGIO ARMANDO BURGOS FUENTES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of DOCTOR OF ENGINEERING August 2004 Major Subject: Engineering College of Engineering EVALUATION AND REDESIGN OF A COMPANY?S DISTRIBUTION NETWORK A Record of Study by SERGIO ARMANDO BURGOS FUENTES Approved...

  18. Networked Loads in the Distribution Grid

    E-Print Network [OSTI]

    Wang, Zhifang; Li, Xiao; Muthukumar, Vishak; Scaglione, Anna; Peisert, Sean; McParland, Chuck

    2012-01-01T23:59:59.000Z

    is structured according to the SCADA model. Although thea prototypical instance of SCADA network in the distributionservers that are part of a SCADA system, which has grown in

  19. Preliminary gas turbine combustor design using a network approach

    SciTech Connect (OSTI)

    Stuttaford, P.J.; Rubini, P.A. [Cranfield Univ. (United Kingdom). School of Mechanical Engineering

    1997-07-01T23:59:59.000Z

    The preliminary design process of a gas turbine combustor often involves the use of cumbersome, geometry restrictive semi-empirical models. The objective of this analysis is the development of a versatile design tool for gas turbine combustors, able to model all conceivable combustor types. A network approach is developed that divides the flow into a number of independent semi-empirical subflows. A pressure-correction methodology solves the continuity equation and a pressure-drop/flow rate relationship. The development of a full conjugate heat transfer model allows the calculation of flame tube heat loss in the presence of cooling films, annulus heat addition, and flame tube feature heat pick-up. A constrained equilibrium calculation, incorporating mixing and recirculation models, simulates combustion processes. Comparison of airflow results to a well-validated combustor design code showed close agreement. The versatility of the network solver is illustrated with comparisons to experimental data from a reverse flow combustor.

  20. Transformation of the Bennet distribution in a rarefied gas

    SciTech Connect (OSTI)

    Movsesyants, Yu.B.; Chikhachev, A.S.

    1986-09-01T23:59:59.000Z

    The usual Bennet distribution of particles in a beam is characterized by a density which decreases comparatively slowly with increasing radius. This is a negative factor in the solution of problems associated with the formation of a thin, powerful, quasistationary, relativistic electron beam. Under sufficiently high pressure of the residual gas the effect of the current of secondary electrons of the plasma, produced by the ionization of the gas by the beam, on the state of the main beam must be taken into account. As a result of this effect, an equilibrium state of the relativistic beam with a drop in the particle density deeper than in the case of the Bennet distribution toward the periphery of the beam can form. For sufficiently high currents in the beam, say in excess of 1 kilo amp, the average Larmor radius of the electrons of the secondary plasma is shorter than the mean-free-path length and the flow of secondary electrons acquires, owing to the magnetization, a longitudinal component which can change the parameters of the beam if the secondary-electron current is comparable to the beam current. This paper examines these phenomena in a kinetic description of the beam and a magnetohydrodynamic description of the plasma.

  1. Distributed services for mobile ad hoc networks

    E-Print Network [OSTI]

    Cao, Guangtong

    2005-11-01T23:59:59.000Z

    A mobile ad hoc network consists of certain nodes that communicate only through wireless medium and can move arbitrarily. The key feature of a mobile ad hoc network is the mobility of the nodes. Because of the mobility, communication links form...

  2. Lightweight Key Establishment for Distributed Networking Environments

    E-Print Network [OSTI]

    Martin, Keith

    / COSIC Seminar 2007 Keith Martin #12;Lightweight Key Establishment/Introduction The plan 1. Wireless sensor networks 2. A key establishment framework 3. Key establishment for grids COSIC Seminar 2007 Keith Establishment/Wireless sensor networks The "classical" scenario COSIC Seminar 2007 Keith Martin #12;Lightweight

  3. Smard Grid Software Applications for Distribution Network Load Forecasting Eugene A. Feinberg, Jun Fei

    E-Print Network [OSTI]

    Feinberg, Eugene A.

    of the distribution network. Keywords: load forecasting, feeder, transformer, load pocket, SmartGrid I. INTRODUCTION

  4. Network Control as a Distributed, Dynamic Game Sarosh Talukdar and Eduardo Camponogara

    E-Print Network [OSTI]

    Network Control as a Distributed, Dynamic Game Sarosh Talukdar and Eduardo Camponogara ECE The operation of large, widely distributed networks can be modeled as distributed dynamic games. This paper. Three Sub-Networks Large networks for the wide spread distribution of goods and services

  5. Gas Distribution in Unventilated Indoor Environments Inspected by a Mobile Robot

    E-Print Network [OSTI]

    Zell, Andreas

    Gas Distribution in Unventilated Indoor Environments Inspected by a Mobile Robot Michael Wandel1@tech.oru.se Abstract Gas source localisation with robots is usually per- formed in environments with a strong in different environments, and the similarities as well as differences in the analyte gas distributions

  6. EIA - Natural Gas Pipeline Network - Network Configuration & System Design

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at1,066,688 760,877 951,322Development &Region/StateNetwork

  7. Distributed Resolution of Network Congestion and Potential Deadlock Using Reservation-based Scheduling

    E-Print Network [OSTI]

    Pinkston, Timothy M.

    Distributed Resolution of Network Congestion and Potential Deadlock Using Reservation multiprocessor servers and loosely coupled (and, oftentimes, heterogeneous) distributed network Abstract Efficient and reliable communication is essential for achieving high performance in a networked

  8. Distributed Control of HVAC&R Networks

    E-Print Network [OSTI]

    Elliott, Matthew Stuart

    2013-07-05T23:59:59.000Z

    retains a degree of modularity—changing one component does not require changing all controllers. The final contribution is a new distributed optimization algorithm that is rooted in distributed MPC and is especially motivated by HVAC&R systems...

  9. Distributed Dynamic Clustering Algorithm in Uneven Distributed Wireless Sensor Network

    E-Print Network [OSTI]

    the sensor networks energy efficient [3][4][5]. This helps to increase the lifetime of the sensor nodes and energy efficient routing has been presented in recent research literature [1]-[16]. In [1] an intelligent energy efficient de- ployment algorithm for cluster based WSNs is described, in which the sensor node

  10. Multi-Level TESLA: Broadcast Authentication for Distributed Sensor Networks

    E-Print Network [OSTI]

    Ning, Peng

    Multi-Level µTESLA: Broadcast Authentication for Distributed Sensor Networks DONGGANG LIU and PENG named multi-level µTESLA based on µTESLA, a broadcast authentication protocol whose scalability is limited by its unicast-based initial parameter distribution. Multi-level µTESLA satisfies several nice

  11. Designing pricing strategies for coordination of networked distributed energy resources

    E-Print Network [OSTI]

    Liberzon, Daniel

    Designing pricing strategies for coordination of networked distributed energy resources Bahman, by a group of distributed energy resources (DERs). The aggregator interacts with the wholesale electricity. The objective is for the aggregator to design a pricing strategy for incentivizing DERs to modify their active

  12. GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK

    E-Print Network [OSTI]

    Osowski, Stanislaw

    1 GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK STRUCTURE of the solid state sensor array used for the gas analysis. The applied neural network is composed of two parts of the gas components. The obtained results have shown that the array of partially selective sensors

  13. Wireless sensor networks for off-shore oil and gas installations

    E-Print Network [OSTI]

    Gjessing, Stein

    1 Wireless sensor networks for off-shore oil and gas installations Martin Dalbro, Erik Eikeland ­ Underwater development and production of oil and gas needs networked sensors and actuators to monitor the production process, to either prevent or detect oil and gas leakage or to enhance the production flow

  14. Distributed MIMO for wireless sensor networks 

    E-Print Network [OSTI]

    Wen, Xiaojun

    2011-11-22T23:59:59.000Z

    Over the past decade, wireless sensor networks have gained more research attention for their potential applications in healthcare, defense, environmental monitoring, etc. Due to the strict energy limitation in the sensor ...

  15. Distributed algorithms for mobile ad hoc networks

    E-Print Network [OSTI]

    Malpani, Navneet

    2001-01-01T23:59:59.000Z

    We first present two new leader election algorithms for mobile ad hoc networks. The algorithms ensure that eventually each connected component of the topology graph has exactly one leader. The algorithms are based on a routing algorithm called TORA...

  16. Networked Loads in the Distribution Grid

    E-Print Network [OSTI]

    Wang, Zhifang; Li, Xiao; Muthukumar, Vishak; Scaglione, Anna; Peisert, Sean; McParland, Chuck

    2012-01-01T23:59:59.000Z

    Lu, and Deborah A. Frincke. Smart-Grid Security Issues. IEEELoads in the Distribution Grid Zhifang Wang ? , Xiao Li † ,Transformer   sensors   Grid   Cyber  system   Cooling    

  17. Model of the radial distribution of gas in the blast furnace

    SciTech Connect (OSTI)

    Nikus, M.; Saxen, H. [Aabo Akademi Univ. (Finland). Dept. of Chemical Engineering

    1996-12-31T23:59:59.000Z

    This paper describes an on-line model for estimating the radial gas distribution in blast furnaces. The model is based on molar and energy flow balances for the blast furnace throat region, and utilizes the top gas temperature and gas temperature measurements from a fixed above-burden probe. The distribution of the gas flux is estimated by a Kalman filter. The method is illustrated to capture short-term dynamics and to detect sudden major changes in the gas distribution in Finnish blast furnace.

  18. Growing Brazilian demand to spur gas network in South America

    SciTech Connect (OSTI)

    Deffarges, E.H. (Booz Allen and Hamilton, San Francisco, CA (United States)); Maurer, L.I.A. (Booz Allen and Hamilton, Sao Paulo (Brazil))

    1993-01-18T23:59:59.000Z

    A recent combination in South America of economic and geopolitical factors is prompting development of a new integrated gas-pipeline network in the continent's Southern Cone. The crucial factors include privatization, regional integration, economic growth, and environmental concerns. The area, Latin America's largest regional entity, includes Brazil (population 150 million and a 1990 GNP of about $375 billion, 9th largest in the world), Argentina (population 32 million and the third largest Latin American economy after Brazil and Mexico), Bolivia, Chile, Paraguay, and Uruguay. Argentina, Brazil, Paraguay, and Uruguay are members of the MercoSur economic bloc whose objective is to develop free trade in the region. There are very few integrated pipeline networks in the world. Besides the giant North American system, with hundreds of producers and pipelines, there is only one other large integrated network. It connects continental European countries to their outside suppliers such as Norway, the C.I.S., and Algeria. The emergence of a new pipeline system is therefore important for the natural-gas industry worldwide and even more so if it occurs in a region now growing rapidly after a decade of economic difficulties.

  19. Safety of Gas Transmission and Distribution Systems (Maine)

    Broader source: Energy.gov [DOE]

    These regulations describe requirements for the participation of natural gas utilities in the Underground Utility Damage Prevention Program, emergency procedures to be followed by natural gas...

  20. Neural network determination of parton distributions: the nonsinglet case

    E-Print Network [OSTI]

    The NNPDF Collaboration; Luigi Del Debbio; Stefano Forte; Jose I. Latorre; Andrea Piccione; Joan Rojo

    2007-01-16T23:59:59.000Z

    We provide a determination of the isotriplet quark distribution from available deep--inelastic data using neural networks. We give a general introduction to the neural network approach to parton distributions, which provides a solution to the problem of constructing a faithful and unbiased probability distribution of parton densities based on available experimental information. We discuss in detail the techniques which are necessary in order to construct a Monte Carlo representation of the data, to construct and evolve neural parton distributions, and to train them in such a way that the correct statistical features of the data are reproduced. We present the results of the application of this method to the determination of the nonsinglet quark distribution up to next--to--next--to--leading order, and compare them with those obtained using other approaches.

  1. Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues

    Fuel Cell Technologies Publication and Product Library (EERE)

    This study assesses the potential to deliver hydrogen through the existing natural gas pipeline network as a hydrogen and natural gas mixture to defray the cost of building dedicated hydrogen pipeline

  2. Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues

    SciTech Connect (OSTI)

    Melaina, M. W.; Antonia, O.; Penev, M.

    2013-03-01T23:59:59.000Z

    The United States has 11 distinct natural gas pipeline corridors: five originate in the Southwest, four deliver natural gas from Canada, and two extend from the Rocky Mountain region. This study assesses the potential to deliver hydrogen through the existing natural gas pipeline network as a hydrogen and natural gas mixture to defray the cost of building dedicated hydrogen pipelines.

  3. Design of a Norm-Bounded LQG Controller for Power Distribution Networks with Distributed Generation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    . Therefore, control of modern electric power systems becomes more and more challenging as the present trends control is essential. Moreover, induction motor loads account for a large portion of domestic loadsDesign of a Norm-Bounded LQG Controller for Power Distribution Networks with Distributed Generation

  4. Distributed Bayesian Hypothesis Testing in Sensor Networks M. Alanyali S. Venkatesh O. Savas S. Aeron

    E-Print Network [OSTI]

    Alanyali, Murat

    Distributed Bayesian Hypothesis Testing in Sensor Networks M. Alanyali S. Venkatesh O. Savas S. The sensors are distributed and can only exchange messages through a network. The sensor network is modelled as a message passing strategy to solve a distributed hypothesis testing problem for a pre-specified network

  5. DAMON: A Distributed Architecture for Monitoring Multi-hop Mobile Networks

    E-Print Network [OSTI]

    Belding-Royer, Elizabeth M.

    DAMON: A Distributed Architecture for Monitoring Multi-hop Mobile Networks Krishna N. Ramachandran. To this end, this paper presents DAMON, a distributed system for monitoring multi-hop mobile networks. DAMON networking, and distributed gaming. For the robust operation of mobile networks, it is crucial

  6. Distribution of Agents with Multiple Capabilities in Heterogeneous Multiagent Networks A Graph Theoretic View

    E-Print Network [OSTI]

    Egerstedt, Magnus

    Distribution of Agents with Multiple Capabilities in Heterogeneous Multiagent Networks ­ A Graph networks. I. INTRODUCTION One of the challenges in heterogeneous networks is to optimally distribute agents more fundamental concern is if such a distribution is possible at all for a given network topology. We

  7. On the Practical and Security Issues of Batch Content Distribution Via Network Coding

    E-Print Network [OSTI]

    Lui, John C.S.

    On the Practical and Security Issues of Batch Content Distribution Via Network Coding Qiming Li distribution via network coding has received a lot of attention lately. However, direct application of network distribution process to slow down the information dispersal or even deplete the network resource. Therefore

  8. Distributed Network Utility Maximization using Event-triggered augmented Lagrangian methods

    E-Print Network [OSTI]

    Lemmon, Michael

    Distributed Network Utility Maximization using Event-triggered augmented Lagrangian methods Pu Wan problems in networked systems, like distributed control of sensor-actuator networks [1], resource to collaboratively solve a network opti- mization problem. A variety of distributed algorithms have been proposed

  9. Distributed-in/ distributed-out sensor networks : a new framework to analyze distributed phenomena

    E-Print Network [OSTI]

    Christakos, Constantine Kleomenis, 1974-

    2006-01-01T23:59:59.000Z

    With a new way of thinking about organizing sensor networks, we demonstrate that we can more easily deploy and program these networks to solve a variety of different problems. We describe sensor networks that can analyze ...

  10. Distributed Control Approaches to Network Optimization

    E-Print Network [OSTI]

    Sah, Sankalp

    2010-07-14T23:59:59.000Z

    GUARANTEES IN NETWORKS : : : : : : : : : : : 30 A. Main Results . . . . . . . . . . . . . . . . . . . . . . . . . 30 B. Examples of Quality Degradation Functions . . . . . . . . 31 1. Average Delay in M/M/1 Queues . . . . . . . . . . . . 32 2. Decay-rate of a... (?low?) price ?xilj . We assume that these values are ?xed for some duration of time, and so can be learned. The number of coupons given to the user must be carefully regulated; if it is larger than ?xilj , the store loses pro?ts due to excessive...

  11. Fault Detection in Distributed Climate Sensor Networks using Dynamic Bayesian Networks

    SciTech Connect (OSTI)

    Chin, George; Choudhury, Sutanay; Kangas, Lars J.; McFarlane, Sally A.; Marquez, Andres

    2010-12-07T23:59:59.000Z

    The Atmospheric Radiation Measurement program operated by U.S. Department of Energy is one of the largest climate research programs dedicated to the collection of long-term continuous measurements of cloud properties and other key components of the earth’s climate system. Given the critical role that collected ARM data plays in the analysis of atmospheric processes and conditions and in the enhancement and evaluation of global climate models, the production and distribution of high-quality data is one of ARM’s primary mission objectives. Fault detection in ARM’s distributed sensor network is one critical ingredient towards maintaining high quality and useful data. We are modeling ARM’s distributed sensor network as a dynamic Bayesian network where key measurements are mapped to Bayesian network variables. We then define the conditional dependencies between variables by discovering highly correlated variable pairs from historical data. The resultant dynamic Bayesian network provides an automated approach to identifying whether certain sensors are malfunctioning or failing in the distributed sensor network. A potential fault or failure is detected when an observed measurement is not consistent with its expected measurement and the observed measurements of other related sensors in the Bayesian network. We present some of our experiences and promising results with the fault detection dynamic Bayesian network.

  12. Interconnecting PV on New York City's Secondary Network Distribution System

    SciTech Connect (OSTI)

    K. Anderson; M. Coddington; K. Burman; S. Hayter; B. Kroposki; and A. Watson

    2009-11-30T23:59:59.000Z

    The U.S. Department of Energy (DOE) has teamed with cities across the country through the Solar America Cities (SAC) partnership program to help reduce barriers and accelerate implementation of solar energy. The New York City SAC team is a partnership between the City University of New York (CUNY), the New York City Mayor s Office of Long-term Planning and Sustainability, and the New York City Economic Development Corporation (NYCEDC).The New York City SAC team is working with DOE s National Renewable Energy Laboratory (NREL) and Con Edison, the local utility, to develop a roadmap for photovoltaic (PV) installations in the five boroughs. The city set a goal to increase its installed PV capacity from1.1 MW in 2005 to 8.1 MW by 2015 (the maximum allowed in 2005). A key barrier to reaching this goal, however, is the complexity of the interconnection process with the local utility. Unique challenges are associated with connecting distributed PV systems to secondary network distribution systems (simplified to ���¢��������networks���¢������� in this report). Although most areas of the country use simpler radial distribution systems to distribute electricity, larger metropolitan areas like New York City typically use networks to increase reliability in large load centers. Unlike the radial distribution system, where each customer receives power through a single line, a network uses a grid of interconnected lines to deliver power to each customer through several parallel circuits and sources. This redundancy improves reliability, but it also requires more complicated coordination and protection schemes that can be disrupted by energy exported from distributed PV systems. Currently, Con Edison studies each potential PV system in New York City to evaluate the system s impact on the network, but this is time consuming for utility engineers and may delay the customer s project or add cost for larger installations. City leaders would like to streamline this process to facilitate faster, simpler, and less expensive distributed PV system interconnections. To assess ways to improve the interconnection process, NREL conducted a four-part study with support from DOE. The NREL team then compiled the final reports from each study into this report. In Section 1���¢��������PV Deployment Analysis for New York City���¢��������we analyze the technical potential for rooftop PV systems in the city. This analysis evaluates potential PV power production in ten Con Edison networks of various locations and building densities (ranging from high density apartments to lower density single family homes). Next, we compare the potential power production to network loads to determine where and when PV generation is most likely to exceed network load and disrupt network protection schemes. The results of this analysis may assist Con Edison in evaluating future PV interconnection applications and in planning future network protection system upgrades. This analysis may also assist other utilities interconnecting PV systems to networks by defining a method for assessing the technical potential of PV in the network and its impact on network loads. Section 2���¢��������A Briefing for Policy Makers on Connecting PV to a Network Grid���¢��������presents an overview intended for nontechnical stakeholders. This section describes the issues associated with interconnecting PV systems to networks, along with possible solutions. Section 3���¢��������Technical Review of Concerns and Solutions to PV Interconnection in New Y

  13. Determination of leakage and unaccounted-for gas distribution

    SciTech Connect (OSTI)

    Spriggs, C.M. [Oklahoma Natural Gas Co., Tulsa, OK (United States)

    1995-12-01T23:59:59.000Z

    All gas systems leak. Gas escapes every system in one way or another. This is true because gas is permeable to every system. For instance, with PE2306 pipe, the volume of methane lost through permeation in one mile of two-inch pipe operated at 60 psi is about 0.26 cubic feet per day. So, if every system leaks, then how much do we lose? Hence, we have unaccounted-for gas. Unaccounted-for gas is truly accounted-for gas--but it is missing! It is the difference between the amount of gas accounted into a system and the amount of gas accounted out. Many factors cause unaccounted-for gas. Each should be examined before the missing gas is all attributed to leakage--a single cause of unaccounted-for gas. Factors I would suggest evaluating are the following: (1) Measured conditions; (2) Accounting methods; (3) Meter errors; (4) Gas used for construction and operations; (5) Major damage and relief valve trips; (6) Meter reading errors, stolen gas, etc.; and (7) Leakage.

  14. Large Scale Distribution of Stochastic Control Algorithms for Gas Storage Constantinos Makassikis, Stephane Vialle

    E-Print Network [OSTI]

    Vialle, Stéphane

    Large Scale Distribution of Stochastic Control Algorithms for Gas Storage Valuation Constantinos algorithm which is applied to gas storage valuation, and presents its experimental performances on two PC achieved in the field of gas storage valuation (see [2, 3] for example). As a result, many different price

  15. Distribution of a Stochastic Control Algorithm Applied to Gas Storage Valuation

    E-Print Network [OSTI]

    Vialle, Stéphane

    Distribution of a Stochastic Control Algorithm Applied to Gas Storage Valuation Constantinos to speed-up and size-up some gas storage valuations, based on a Stochastic Dy- namic Programming algorithm. Such valuations are typically needed by investment projects and yield prices of gas storage spaces and facilities

  16. Measurements of Gas Bubble Size Distributions in Flowing Liquid Mercury

    SciTech Connect (OSTI)

    Wendel, Mark W [ORNL; Riemer, Bernie [ORNL; Abdou, Ashraf A [ORNL

    2012-01-01T23:59:59.000Z

    ABSTRACT Pressure waves created in liquid mercury pulsed spallation targets have been shown to induce cavitation damage on the target container. One way to mitigate such damage would be to absorb the pressure pulse energy into a dispersed population of small bubbles, however, measuring such a population in mercury is difficult since it is opaque and the mercury is involved in a turbulent flow. Ultrasonic measurements have been attempted on these types of flows, but the flow noise can interfere with the measurement, and the results are unverifiable and often unrealistic. Recently, a flow loop was built and operated at Oak Ridge National Labarotory to assess the capability of various bubbler designs to deliver an adequate population of bubbles to mitigate cavitation damage. The invented diagnostic technique involves flowing the mercury with entrained gas bubbles in a steady state through a horizontal piping section with a glass-window observation port located on the top. The mercury flow is then suddenly stopped and the bubbles are allowed to settle on the glass due to buoyancy. Using a bright-field illumination and a high-speed camera, the arriving bubbles are detected and counted, and then the images can be processed to determine the bubble populations. After using this technique to collect data on each bubbler, bubble size distributions were built for the purpose of quantifying bubbler performance, allowing the selection of the best bubbler options. This paper presents the novel procedure, photographic technique, sample visual results and some example bubble size distributions. The best bubbler options were subsequently used in proton beam irradiation tests performed at the Los Alamos National Laboratory. The cavitation damage results from the irradiated test plates in contact with the mercury are available for correlation with the bubble populations. The most effective mitigating population can now be designed into prototypical geometries for implementation into an actual SNS target.

  17. Pancakes: A Software Framework for Distributed Robot and Sensor Network

    E-Print Network [OSTI]

    Egerstedt, Magnus

    functionality in mil- itary, industrial, and consumer applications. In [13], the authors deployed a robotPancakes: A Software Framework for Distributed Robot and Sensor Network Applications Patrick Martin resources of the sensors as well as detected failures. To make multi-agent robotics applications

  18. Pancakes: A Software Framework for Distributed Robot and Sensor Network

    E-Print Network [OSTI]

    Egerstedt, Magnus

    , industrial, and consumer applications. In [14], the authors deployed a robot to maintain an office gardenPancakes: A Software Framework for Distributed Robot and Sensor Network Applications Patrick Martin environment. To make multi-agent robotics applications, such as the prior examples, work across different

  19. Interleaved Backtracking in Distributed Constraint Networks Youssef Hamadi

    E-Print Network [OSTI]

    Hamadi, Yousseff

    parallel and distributed search. By this way we add the potential speed-up of a parallel exploration show that 1) insoluble problems do not greatly degrade performance over DIBT and 2) super- linear speed to search for solution in a con- straint network is depth-first backtrack search (DFS) [3], which performs

  20. Distributed and Efficient Classifiers for Wireless Audio-Sensor Networks

    E-Print Network [OSTI]

    Nascimento, Mario A.

    efficient in terms of communication overhead. Index Terms--Sensors, Acoustic Classification, Features Selec evaluation results in terms of classification ac- curacy and energy expenditure trade-offs. Finally, SectionDistributed and Efficient Classifiers for Wireless Audio-Sensor Networks Baljeet Malhotra

  1. Distribution Network Design: Selection and Sizing of Congested Connections

    E-Print Network [OSTI]

    Nagi, Rakesh

    promotions (i.e., seasonal) and regular demand. In response to this, at the strategic or aggregate level demand. Several multinational companies use distribution center networks in this manner. For example. For most fast moving consumer goods, demand patterns are quite erratic, being a function of both sales

  2. Distributed estimation of diameter, radius and eccentricities in anonymous networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    properties of being fully distributed, parallel and scalable. We analytically characterize the statistics of the network by maintaining a certain efficiency in communicating using less energy (Chen et al., 2002 to these results has received funding from the European Union Seventh Framework Programme [FP7/2007-2013] under

  3. Restoration strategy for power distribution networks using optimal supervisory control

    E-Print Network [OSTI]

    Lim, Jong-Tae

    the supervisory control technique to a line-restoration problem aiming to increase the steady-state security level of lines and transformers and the bus voltage for the security assessment. 2 Preliminary The supervisoryRestoration strategy for power distribution networks using optimal supervisory control M.-S. Lee

  4. Joint physical and numerical modeling of water distribution networks.

    SciTech Connect (OSTI)

    Zimmerman, Adam; O'Hern, Timothy John; Orear, Leslie Jr.; Kajder, Karen C.; Webb, Stephen Walter; Cappelle, Malynda A.; Khalsa, Siri Sahib; Wright, Jerome L.; Sun, Amy Cha-Tien; Chwirka, J. Benjamin; Hartenberger, Joel David; McKenna, Sean Andrew; van Bloemen Waanders, Bart Gustaaf; McGrath, Lucas K.; Ho, Clifford Kuofei

    2009-01-01T23:59:59.000Z

    This report summarizes the experimental and modeling effort undertaken to understand solute mixing in a water distribution network conducted during the last year of a 3-year project. The experimental effort involves measurement of extent of mixing within different configurations of pipe networks, measurement of dynamic mixing in a single mixing tank, and measurement of dynamic solute mixing in a combined network-tank configuration. High resolution analysis of turbulence mixing is carried out via high speed photography as well as 3D finite-volume based Large Eddy Simulation turbulence models. Macroscopic mixing rules based on flow momentum balance are also explored, and in some cases, implemented in EPANET. A new version EPANET code was developed to yield better mixing predictions. The impact of a storage tank on pipe mixing in a combined pipe-tank network during diurnal fill-and-drain cycles is assessed. Preliminary comparison between dynamic pilot data and EPANET-BAM is also reported.

  5. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    SciTech Connect (OSTI)

    Stadler, Michael; Marnay, Chris; Cardoso, Goncalo; Megel, Olivier; Siddiqui, Afzal; Lai, Judy

    2009-08-15T23:59:59.000Z

    Lawrence Berkeley National Laboratory (LBL) is working with the California Energy Commission (CEC) to determine the role of distributed generation (DG) in greenhouse gas reductions. The impact of DG on large industrial sites is well known, and mostly, the potentials are already harvested. In contrast, little is known about the impact of DG on commercial buildings with peak electric loads ranging from 100 kW to 5 MW. We examine how DG with combined heat and power (CHP) may be implemented within the context of a cost minimizing microgrid that is able to adopt and operate various smart energy technologies, such as thermal and photovoltaic (PV) on-site generation, heat exchangers, solar thermal collectors, absorption chillers, and storage systems. We use a mixed-integer linear program (MILP) that has the minimization of a site's annual energy costs as objective. Using 138 representative commercial sites in California (CA) with existing tariff rates and technology data, we find the greenhouse gas reduction potential for California's commercial sector. This paper shows results from the ongoing research project and finished work from a two year U.S. Department of Energy research project. To show the impact of the different technologies on CO2 emissions, several sensitivity runs for different climate zones within CA with different technology performance expectations for 2020 were performed. The considered sites can contribute between 1 Mt/a and 1.8 Mt/a to the California Air Resources Board (CARB) goal of 6.7Mt/a CO2 abatement potential in 2020. Also, with lower PV and storage costs as well as consideration of a CO2 pricing scheme, our results indicate that PV and electric storage adoption can compete rather than supplement each other when the tariff structure and costs of electricity supply have been taken into consideration. To satisfy the site's objective of minimizing energy costs, the batteries will be charged also by CHP systems during off-peak and mid-peak hours and not only by PV during sunny on-peak hours.

  6. Gas Deliverability Using the Method of Distributed Volumetric Sources

    E-Print Network [OSTI]

    Jin, Xiaoze

    2010-01-15T23:59:59.000Z

    conductivity. Parametric study is performed by varying the proppant pack permeability with a linear distribution, varying fracture width with an elliptical distribution and varying fracture height with an elliptical distribution. The details of hydraulic...

  7. Methodology The electricity generation and distribution network in the Western United States is

    E-Print Network [OSTI]

    Hall, Sharon J.

    Methodology The electricity generation and distribution network in the Western United States is comprised of power plants, electric utilities, electrical transformers, transmission and distribution infrastructure, etc. We conceptualize the system as a transportation network with resources (electricity

  8. EIA - Natural Gas Pipeline Network - Aquifer Storage Reservoir...

    Gasoline and Diesel Fuel Update (EIA)

    Configuration About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Aquifer Underground Natural Gas Storage...

  9. acid gas emissions: Topics by E-print Network

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

    gas ((GHG) (CO2, NH4, HFCs 26 INTRODUCTION Greenhouse Gas Emissions in an Urban Environment Environmental Sciences and Ecology Websites Summary: INTRODUCTION Greenhouse Gas...

  10. Economic Nonlinear Model Predictive Control for the Optimization of Gas Pipeline Networks

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    / 24 #12;Natural Gas Industry Motivation Natural Gas Industry Globally increasing demand & production of natural gas. Demand distribution (as of 2008) 21 % residential, 13 % Commercial, 34 % Industrial, 29 - Regulated, Deregulated markets Applying Economic Model Predictive Control to gas transportation. 1Zheng et

  11. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    holidays ICE: Internal combustion engine, GT: Gas turbine,indicate that internal combustion engines (ICE) with heatdominance of internal combustion engines with heat exchanger

  12. Distributed Hydrogen Production from Natural Gas: Independent Review

    SciTech Connect (OSTI)

    Fletcher, J.; Callaghan, V.

    2006-10-01T23:59:59.000Z

    Independent review report on the available information concerning the technologies needed for forecourts producing 150 kg/day of hydrogen from natural gas.

  13. GLOBAL OPTIMIZATION OF MULTIPHASE FLOW NETWORKS IN OIL AND GAS PRODUCTION SYSTEMS

    E-Print Network [OSTI]

    Johansen, Tor Arne

    1 GLOBAL OPTIMIZATION OF MULTIPHASE FLOW NETWORKS IN OIL AND GAS PRODUCTION SYSTEMS MSc. Hans in an oil production system is developed. Each well may be manipulated by injecting lift gas and adjusting in the maximum oil flow rate, water flow rate, liquid flow rate, and gas flow rate. The wells may also

  14. Physical Modeling of Scaled Water Distribution System Networks.

    SciTech Connect (OSTI)

    O'Hern, Timothy J.; Hammond, Glenn Edward; Orear, Leslie ,; van Bloemen Waanders, Bart G.; Paul Molina; Ross Johnson

    2005-10-01T23:59:59.000Z

    Threats to water distribution systems include release of contaminants and Denial of Service (DoS) attacks. A better understanding, and validated computational models, of the flow in water distribution systems would enable determination of sensor placement in real water distribution networks, allow source identification, and guide mitigation/minimization efforts. Validation data are needed to evaluate numerical models of network operations. Some data can be acquired in real-world tests, but these are limited by 1) unknown demand, 2) lack of repeatability, 3) too many sources of uncertainty (demand, friction factors, etc.), and 4) expense. In addition, real-world tests have limited numbers of network access points. A scale-model water distribution system was fabricated, and validation data were acquired over a range of flow (demand) conditions. Standard operating variables included system layout, demand at various nodes in the system, and pressure drop across various pipe sections. In addition, the location of contaminant (salt or dye) introduction was varied. Measurements of pressure, flowrate, and concentration at a large number of points, and overall visualization of dye transport through the flow network were completed. Scale-up issues that that were incorporated in the experiment design include Reynolds number, pressure drop across nodes, and pipe friction and roughness. The scale was chosen to be 20:1, so the 10 inch main was modeled with a 0.5 inch pipe in the physical model. Controlled validation tracer tests were run to provide validation to flow and transport models, especially of the degree of mixing at pipe junctions. Results of the pipe mixing experiments showed large deviations from predicted behavior and these have a large impact on standard network operations models.3

  15. Price Discovery in Dynamic Power Markets with Low-Voltage Distribution-Network Participants

    E-Print Network [OSTI]

    Caramanis, Michael

    but not least distribution network rent. Keywords-distribution network locational marginal prices; power flow application to Electric Power [2, 3] dynamic Locational-Marginal-Price (LMP) based Wholesale Power Markets load-side market participation and the use of Distribution network Locational Marginal Prices (DLMP

  16. Onix: A Distributed Control Platform for Large-scale Production Networks Teemu Koponen

    E-Print Network [OSTI]

    Onix: A Distributed Control Platform for Large-scale Production Networks Teemu Koponen , Martin on top of which a network control plane can be implemented as a distributed system. Control planes written within Onix operate on a global view of the network, and use basic state distribution primitives

  17. Degree Distribution and Hopcount in Wireless Ad-hoc Networks R. Hekmat, P. Van Mieghem

    E-Print Network [OSTI]

    Van Mieghem, Piet

    Degree Distribution and Hopcount in Wireless Ad-hoc Networks R. Hekmat, P. Van Mieghem Delft focus in this article is on the degree distribution and hopcount in these networks. The results that the degree distribution in wireless ad-hoc networks is binomial for low values of the mean degree. Further

  18. ON-LINE DETECTION OF DISTRIBUTED ATTACKS FROM SPACE-TIME NETWORK FLOW PATTERNS

    E-Print Network [OSTI]

    Baras, John S.

    ON-LINE DETECTION OF DISTRIBUTED ATTACKS FROM SPACE-TIME NETWORK FLOW PATTERNS J.S. Baras* , A in the network. We are interested in the "quickest detection" problem when the attack is distributed is to detect when a distributed denial of service is taking place in one sub-network of a transit (core

  19. Degree distribution in plant/animal mutualistic networks: forbidden links or random interactions?

    E-Print Network [OSTI]

    Vazquez, Diego

    Degree distribution in plantÁ/animal mutualistic networks: forbidden links or random interactions al. 2000, Newman 2003). Such a distribution may result from a process of network growth through distribution to drop off more rapidly than under a power law. Although network growth through preferential

  20. Distributed Connectivity Control of Mobile Networks Michael M. Zavlanos and George J. Pappas

    E-Print Network [OSTI]

    Pappas, George J.

    Distributed Connectivity Control of Mobile Networks Michael M. Zavlanos and George J. Pappas potential fields are used to maintain existing links in the network. Second, distributed coordination and distributed eigenvector computation is considered in [5]. Network connectivity for double integrator agents

  1. Random Boolean networks with number of parents generated by certain probability distributions

    E-Print Network [OSTI]

    Matache, Dora

    Random Boolean networks with number of parents generated by certain probability distributions Ray A following a Power Law distribution. Others have examined how highly connected networks use a Popularity network where the number of parents are obtained using a Power Law distribution and are connected based

  2. PS'2006 -Photonics in Switching Conference An Intelligent Network Management System with Multi-Tier Distributed

    E-Print Network [OSTI]

    Kolner, Brian H.

    -Tier Distributed Intelligence for Optical Packet-Agile Transport Networks Jinqiang Yang and S.J. Ben Yoo Department introduces multi-tier distributed intelligence into the network management plane in order to address-line traffic engineering over optical packet-switching networks facilitated by the multi-tier distributed

  3. Uncovering a Hidden Distributed Architecture Behind Scale-free Transcriptional Regulatory Networks

    E-Print Network [OSTI]

    Babu, M. Madan

    Uncovering a Hidden Distributed Architecture Behind Scale-free Transcriptional Regulatory Networks: transcriptional network; co-regulation network; distributed robustness; scale-free structure; evolution. This mutational robustness could arise either due to redundancy, i.e. direct backup, or due to distributed

  4. Network Connectivity and Price Convergency: Gas Pipeline Deregulation

    E-Print Network [OSTI]

    De Vany, Arthur; Walls, W. David

    1993-01-01T23:59:59.000Z

    Convergence: Gas Pipeline Deregulation Arthur De Vany W.Price Convergence: Gas Pipeline Deregulation Arthur De Vany

  5. Ising Model on Networks with an Arbitrary Distribution of Connections

    E-Print Network [OSTI]

    S. N. Dorogovtsev; A. V. Goltsev; J. F. F. Mendes

    2002-04-11T23:59:59.000Z

    We find the exact critical temperature $T_c$ of the nearest-neighbor ferromagnetic Ising model on an `equilibrium' random graph with an arbitrary degree distribution $P(k)$. We observe an anomalous behavior of the magnetization, magnetic susceptibility and specific heat, when $P(k)$ is fat-tailed, or, loosely speaking, when the fourth moment of the distribution diverges in infinite networks. When the second moment becomes divergent, $T_c$ approaches infinity, the phase transition is of infinite order, and size effect is anomalously strong.

  6. Securing a Quantum Key Distribution Network Using Secret Sharing

    E-Print Network [OSTI]

    Barnett, Stephen M

    2012-01-01T23:59:59.000Z

    We present a simple new technique to secure quantum key distribution relay networks using secret sharing. Previous techniques have relied on creating distinct physical paths in order to create the shares. We show, however, how this can be achieved on a single physical path by creating distinct logical channels. The technique utilizes a random 'drop-out' scheme to ensure that an attacker must compromise all of the relays on the channel in order to access the key.

  7. HPSS Yearly Network Traffic

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

    growth in network traffic to storage over the years. Network Traffic Growth Network Distribution 2010 Network Distribution 2010 Network Distribution 2009 Network Distribution...

  8. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    fired natural gas chillers, waste heat or solar heat; • hot-with HX can utilize waste heat for heating or coolingto utilize all the waste heat just reduces overall energy

  9. Dynamic Networks: Recent Results and Applications

    E-Print Network [OSTI]

    Nagurney, Anna

    . #12;Duke Energy Gas Pipeline Network #12;Components of Common Physical Networks Network System Nodes, Railroad Track Automobiles, Trains, and Planes, Manufacturing and logistics Workstations, Distribution Exchanges Fiber Optic Cables Radio Links Voice, Data, Video Energy Pumping Stations, Plants Pipelines

  10. A Multi Agent-Based Framework for Simulating Household PHEV Distribution and Electric Distribution Network Impact

    SciTech Connect (OSTI)

    Cui, Xiaohui [ORNL] [ORNL; Liu, Cheng [ORNL] [ORNL; Kim, Hoe Kyoung [ORNL] [ORNL; Kao, Shih-Chieh [ORNL] [ORNL; Tuttle, Mark A [ORNL] [ORNL; Bhaduri, Budhendra L [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    The variation of household attributes such as income, travel distance, age, household member, and education for different residential areas may generate different market penetration rates for plug-in hybrid electric vehicle (PHEV). Residential areas with higher PHEV ownership could increase peak electric demand locally and require utilities to upgrade the electric distribution infrastructure even though the capacity of the regional power grid is under-utilized. Estimating the future PHEV ownership distribution at the residential household level can help us understand the impact of PHEV fleet on power line congestion, transformer overload and other unforeseen problems at the local residential distribution network level. It can also help utilities manage the timing of recharging demand to maximize load factors and utilization of existing distribution resources. This paper presents a multi agent-based simulation framework for 1) modeling spatial distribution of PHEV ownership at local residential household level, 2) discovering PHEV hot zones where PHEV ownership may quickly increase in the near future, and 3) estimating the impacts of the increasing PHEV ownership on the local electric distribution network with different charging strategies. In this paper, we use Knox County, TN as a case study to show the simulation results of the agent-based model (ABM) framework. However, the framework can be easily applied to other local areas in the US.

  11. affect gas exchange: Topics by E-print Network

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

    were Ho, David 15 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE COMBINED EFFECTS OF WIND AND RAIN ON THE GAS TRANSFER Geosciences Websites Summary: AIR-WATER GAS EXCHANGE:...

  12. activity gas exchange: Topics by E-print Network

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

    were Ho, David 13 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE COMBINED EFFECTS OF WIND AND RAIN ON THE GAS TRANSFER Geosciences Websites Summary: AIR-WATER GAS EXCHANGE:...

  13. affects gas exchange: Topics by E-print Network

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

    were Ho, David 15 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE COMBINED EFFECTS OF WIND AND RAIN ON THE GAS TRANSFER Geosciences Websites Summary: AIR-WATER GAS EXCHANGE:...

  14. accelerated thin gas: Topics by E-print Network

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

    gas HEP - Theory (arXiv) Summary: We extend the Chaplygin gas model for dark matter and dark energy unification by promoting the Chaplygin gas parameter A to the potential for an...

  15. Competition in a Network of Markets: The Natural Gas Industry

    E-Print Network [OSTI]

    Walls, W. David

    1992-01-01T23:59:59.000Z

    Growth in Unbundled Natural Gas Transportation Services:Purchasesby Interstate Natural Gas Pipelines Companies,1987.U.S. GPO, 1988. . Natural Gas Monthly. WashingtonD.C. : U.S.

  16. Natural gas network resiliency to a %22shakeout scenario%22 earthquake.

    SciTech Connect (OSTI)

    Ellison, James F.; Corbet, Thomas Frank,; Brooks, Robert E. [RBAC, Inc., Sherman Oaks, CA

    2013-06-01T23:59:59.000Z

    A natural gas network model was used to assess the likely impact of a scenario San Andreas Fault earthquake on the natural gas network. Two disruption scenarios were examined. The more extensive damage scenario assumes the disruption of all three major corridors bringing gas into southern California. If withdrawals from the Aliso Canyon storage facility are limited to keep the amount of stored gas within historical levels, the disruption reduces Los Angeles Basin gas supplies by 50%. If Aliso Canyon withdrawals are only constrained by the physical capacity of the storage system to withdraw gas, the shortfall is reduced to 25%. This result suggests that it is important for stakeholders to put agreements in place facilitating the withdrawal of Aliso Canyon gas in the event of an emergency.

  17. EIA - Natural Gas Pipeline Network - Salt Cavern Storage Reservoir...

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

    Salt Cavern Underground Natural Gas Storage Reservoir Configuration Salt Cavern Underground Natural Gas Storage Reservoir Configuration Source: PB Energy Storage Services Inc....

  18. analysis gas: Topics by E-print Network

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

    Gas Renewable Energy Websites Summary: Defect Analysis of Vehicle Compressed Natural Gas Composite Cylinder A China Paper on Type 4;Industrial Computed Tomography (CT)...

  19. alaska gas pipeline: Topics by E-print Network

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

    and ROW Lower South Carolina Electric and Gas University of South Carolina Praxair Hydrogen Pipeline Working Group 4 A moving horizon solution to the gas pipeline...

  20. arctic gas pipeline: Topics by E-print Network

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

    and ROW Lower South Carolina Electric and Gas University of South Carolina Praxair Hydrogen Pipeline Working Group 3 A moving horizon solution to the gas pipeline...

  1. arctic gas pipelines: Topics by E-print Network

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

    and ROW Lower South Carolina Electric and Gas University of South Carolina Praxair Hydrogen Pipeline Working Group 3 A moving horizon solution to the gas pipeline...

  2. EIA - Natural Gas Pipeline Network - Regional Overview and Links

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

    Overview and Links About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Regional Overviews and Links to Pipeline...

  3. EIA - Natural Gas Pipeline Network - Depleted Reservoir Storage...

    Gasoline and Diesel Fuel Update (EIA)

    Configuration About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Depleted Production Reservoir Underground...

  4. Complexity analysis of pipeline mapping problems in distributed heterogeneous networks

    SciTech Connect (OSTI)

    Lin, Ying [University of Tennessee, Knoxville (UTK); Wu, Qishi [ORNL; Zhu, Mengxia [ORNL; Rao, Nageswara S [ORNL

    2009-04-01T23:59:59.000Z

    Largescale scientific applications require using various system resources to execute complex computing pipelines in distributed networks to support collaborative research. System resources are typically shared in the Internet or over dedicated connections based on their location, availability, capability, and capacity. Optimizing the network performance of computing pipelines in such distributed environments is critical to the success of these applications. We consider two types of largescale distributed applications: (1) interactive applications where a single dataset is sequentially processed along a pipeline; and (2) streaming applications where a series of datasets continuously flow through a pipeline. The computing pipelines of these applications consist of a number of modules executed in a linear order in network environments with heterogeneous resources under different constraints. Our goal is to find an efficient mapping scheme that allocates the modules of a pipeline to network nodes for minimum endtoend delay or maximum frame rate. We formulate the pipeline mappings in distributed environments as optimization problems and categorize them into six classes with different optimization goals and mapping constraints: (1) Minimum Endtoend Delay with No Node Reuse (MEDNNR), (2) Minimum Endtoend Delay with Contiguous Node Reuse (MEDCNR), (3) Minimum Endtoend Delay with Arbitrary Node Reuse (MEDANR), (4) Maximum Frame Rate with No Node Reuse or Share (MFRNNRS), (5) Maximum Frame Rate with Contiguous Node Reuse and Share (MFRCNRS), and (6) Maximum Frame Rate with Arbitrary Node Reuse and Share (MFRANRS). Here, 'contiguous node reuse' means that multiple contiguous modules along the pipeline may run on the same node and 'arbitrary node reuse' imposes no restriction on node reuse. Note that in interactive applications, a node can be reused but its resource is not shared. We prove that MEDANR is polynomially solvable and the rest are NP-complete. MEDANR, where either contiguous or noncontiguous modules in the pipeline can be mapped onto the same node, is essentially the Maximum n-hop Shortest Path problem, and can be solved using a dynamic programming method. In MEDNNR and MFRNNRS, any network node can be used only once, which requires selecting the same number of nodes for onetoone onto mapping. We show its NP-completeness by reducing from the Hamiltonian Path problem. Node reuse is allowed in MEDCNR, MFRCNRS and MFRANRS, which are similar to the Maximum n-hop Shortest Path problem that considers resource sharing. We prove their NP-completeness by reducing from the Disjoint-Connecting-Path Problem and Widest path with the Linear Capacity Constraints problem, respectively.

  5. An Efficiency Measure for Dynamic Networks with

    E-Print Network [OSTI]

    Nagurney, Anna

    networks with time-varying traffics. "... traffic over the Internet doubling every 100 days..." (Frances of Other Dynamic Networks Oil & Natural gas network Electricity generation and distributionElectricity generation and distribution network Supply chain network #12;Varying Demand in Global OilVarying Demand

  6. Voltage and Frequency Stability of Weak Power Distribution Networks with Droop-Controlled

    E-Print Network [OSTI]

    Lemmon, Michael

    Voltage and Frequency Stability of Weak Power Distribution Networks with Droop analysis, because of coupled network dynamics. Additionally, droop controlled rotational and electronic DG distribution network coupled with droop-controlled DG's, which are based on both fast inverters and SG

  7. A Framework for Distributed Key Management Schemes in Heterogeneous Wireless Sensor Networks

    E-Print Network [OSTI]

    Hu, Jiankun

    A Framework for Distributed Key Management Schemes in Heterogeneous Wireless Sensor Networks Kejie propose a framework for key management schemes in distributed wireless sensor networks with heterogeneous, the wireless sensor network can achieve higher key connectivity and higher resilience. I. INTRODUCTION Wireless

  8. Social Butterfly: Social Caches for Distributed Social Networks Lu Han, Badri Nath, Liviu Iftode, S. Muthukrishnan

    E-Print Network [OSTI]

    Iftode, Liviu

    Social Butterfly: Social Caches for Distributed Social Networks Lu Han, Badri Nath, Liviu Iftode, S, muthu}@cs.rutgers.edu Abstract--A distributed architecture for implementing online social networks (OSNs) can overcome several disadvantages of the now popular centralized online social networks

  9. Simulating the Household Plug-in Hybrid Electric Vehicle Distribution and its Electric Distribution Network Impacts

    SciTech Connect (OSTI)

    Cui, Xiaohui [ORNL] [ORNL; Kim, Hoe Kyoung [ORNL] [ORNL; Liu, Cheng [ORNL] [ORNL; Kao, Shih-Chieh [ORNL] [ORNL; Bhaduri, Budhendra L [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    This paper presents a multi agent-based simulation framework for modeling spatial distribution of plug-in hybrid electric vehicle ownership at local residential level, discovering plug-in hybrid electric vehicle hot zones where ownership may quickly increase in the near future, and estimating the impacts of the increasing plug-in hybrid electric vehicle ownership on the local electric distribution network with different charging strategies. We use Knox County, Tennessee as a case study to highlight the simulation results of the agent-based simulation framework.

  10. Painting a Picture of Gas Hydrate Distribution with Thermal Images

    SciTech Connect (OSTI)

    Weinberger, Jill L.; Brown, Kevin M.; Long, Philip E.

    2005-02-25T23:59:59.000Z

    Large uncertainties about the energy resource potential and role in global climate change of gas hydrates result from uncertainty about how much hydrate is contained in marine sediments. During Leg 204 of the Ocean Drilling Program (ODP) to the accretionary complex of the Cascadia subduction zone, the entire gas hydrate stability zone was sampled in contrasting geological settings defined by a 3D seismic survey. By integrating results from different methods, including several new techniques developed for Leg 204, we overcome the problem of spatial under-sampling inherent in robust methods traditionally used for estimating the hydrate content of cores and obtain a high-resolution, quantitative estimate of the total amount and spatial variability of gas hydrate in this structural system. We conclude that high gas hydrate content (30-40% of pore space of 20-26% of total volume) is restricted to the upper tens of meters below the seafloor near the summit of the structure, where vigorous fluid venting occurs.

  11. REAL-TIME OPTIMIZATION OF A COMPLEX INDUSTRIAL GAS NETWORK

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    n MAC 1 GAN Network Cyclus Compressors BAC O2 Compressors N2 Compressors MAC n Cold box n BAC LAR Liquefaction Process Cold Box 1 MAC 1 GAN Network Liquefier Compressor BAC O2 Compressors N2 Compressors MAC n Cold Box n BAC GOX Network #12;NETWORK MODEL: NONCONVEX 8 · Model for a single column

  12. 384 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 2, APRIL 2010 Monolithically Integrated Gas Distribution

    E-Print Network [OSTI]

    Wilamowski, Bogdan Maciej

    and are particularly useful for vehicle power, distributed generation, and portable electronic devices [1]. Fuel cells]. In this context, polymer-electrolyte-membrane (PEM) fuel cells [7] and direct methanol fuel cells [8], [9] have Gas Distribution Chamber for Silicon MEMS Fuel Cells Antonio Luque, Senior Member, IEEE, José M

  13. Distributional properties of Euclidean distances in wireless networks involving road systems

    E-Print Network [OSTI]

    Schmidt, Volker

    1 Distributional properties of Euclidean distances in wireless networks involving road systems of large wireless networks. The network geometry is modelled by random geometric graphs, and the locations are closely related with the interference geometry and, consequently, the performance of wireless networks

  14. Survey and assessment of the effects of nonconventional gases on gas distribution equipment

    SciTech Connect (OSTI)

    Jasionowski, W.J.; Scott, M.I.; Gracey, W.C.

    1982-10-01T23:59:59.000Z

    A literature search and a survey of the gas industry were conducted to assess potential problems in the distribution of nonconventional gases. Available literature did not uncover data that would describe potential problems or substantiate the presence of harmful trace elements in final gas compositions produced from various SNG processes. Information from the survey indicates that some companies have encountered problems with nonconventional gases and extraneous additives such as landfill gas, refinery off-gases, oil gas, carbureted water gas, coke-oven gas, propane-air, and compressor lubricant oils. These nonconventional gases and compressor oils may 1) cause pipeline corrosion, 2) degrade some elastomeric materials and greases and affect the integrity of seals, gaskets, O-rings, and meter and regulator diaphragms, and 3) cause operational and safety problems. The survey indicated that 62% of the responding companies plan to use supplemental gas, with most planning on more than one type. Distribution companies intend to significantly increase their use of polyethylene piping from 11.6% in 1980 to 22.4% in 2000 for gas mains and from 33.4% to 50.3% in 2000 for gas service lines.

  15. An Efficiency Measure for Dynamic Networks with Application to the Internet and Vulnerability

    E-Print Network [OSTI]

    Nagurney, Anna

    Networks Oil and natural gas networks Electricity generation and distribution networks Supply chain). Evolutionary Variational Inequalities and Economic Models for Demand Supply Markets, Mathematical Models, Computational Management Science 4, 355-375. Nagurney, A. (2006). Supply Chain Network Economics: Dynamics

  16. Work distribution of an expanding gas and transverse energy production in relativistic heavy ion collisions

    E-Print Network [OSTI]

    Zhang, Bin

    2013-01-01T23:59:59.000Z

    The work distribution of an expanding extreme relativistic gas is shown to be a gamma distribution with a different shape parameter as compared with its non-relativistic counterpart. This implies that the shape of the transverse energy distribution in relativistic heavy ion collisions depends on the particle contents during the evolution of the hot and dense matter. Therefore, transverse energy fluctuations provide additional insights into the Quark-Gluon Plasma produced in these collisions.

  17. Work distribution of an expanding gas and transverse energy production in relativistic heavy ion collisions

    E-Print Network [OSTI]

    Bin Zhang; Jay P. Mayfield

    2014-01-19T23:59:59.000Z

    The work distribution of an expanding extreme relativistic gas is shown to be a gamma distribution with a different shape parameter as compared with its non-relativistic counterpart. This implies that the shape of the transverse energy distribution in relativistic heavy ion collisions depends on the particle contents during the evolution of the hot and dense matter. Therefore, transverse energy fluctuations provide additional insights into the Quark-Gluon Plasma produced in these collisions.

  18. The Impact of Stochastic Noisy Feedback on Distributed Network Utility Maximization

    E-Print Network [OSTI]

    Reisslein, Martin

    The Impact of Stochastic Noisy Feedback on Distributed Network Utility Maximization Junshan Zhang of distributed network utility maximization (NUM) algorithms hinges heavily on information feedback through, that the iterates generated by distributed P-D algorithms converge with probability one to the optimal point, under

  19. Trust-aware State Estimation Under False Data Injection in Distributed Sensor Networks

    E-Print Network [OSTI]

    Baras, John S.

    1 Trust-aware State Estimation Under False Data Injection in Distributed Sensor Networks Shanshan of nodes and the volatility of the network. In this paper, we focus on robust distributed state estimation Engineering University of Maryland, College Park, MD, 20742 Email: {sszheng,tjiang,baras}@umd.edu Abstract--Distributed

  20. Design of Robust Distribution Networks Run by fourth Party Logistics Service Providers

    E-Print Network [OSTI]

    Armbruster, Dieter

    Design of Robust Distribution Networks Run by fourth Party Logistics Service Providers M logistics service provider (LSP), who faces the problem of distributing different products from suppliers distributions. 1 Introduction The logistics networks considered in this paper consist of production facilities

  1. A Distributed Power Control and Routing Scheme for Rechargeable Sensor Networks

    E-Print Network [OSTI]

    Nasipuri, Asis

    A Distributed Power Control and Routing Scheme for Rechargeable Sensor Networks Amitangshu Pal power control and quality aware routing scheme for rechargeable wireless sensor networks (WSNs consumption based on estimated energy resources. Transmission power control has been widely researched

  2. Stix: a goal-oriented distributed management system for large-scale broadband wireless access networks 

    E-Print Network [OSTI]

    Bernardi, Giacomo; Calder, Matt; Fenacci, Damon; Macmillan, Alexander; Marina, Mahesh

    2010-10-25T23:59:59.000Z

    management infrastructure scalable and flexible. Stix is based on the notions of goal-oriented and in-network management. With Stix, administrators graphically specify network management activities as workflows, which are deployed at a distributed set...

  3. Energy Efficient Distributed Data Fusion In Multihop Wireless Sensor Networks

    E-Print Network [OSTI]

    Huang, Yi

    2010-01-01T23:59:59.000Z

    processing for a wireless sensor networks. Each circle ’S’techniques in wireless sensor networks: A survey,” IEEEestimation for wireless sensor networks, part i: Gaussian

  4. Improving the performance of distributed simulations of wireless sensor networks

    E-Print Network [OSTI]

    Jin, Zhong-Yi

    2010-01-01T23:59:59.000Z

    Overview of Wireless Sensor Networks . . 2.1.2 Difficultiesin parallel a wireless sensor network with two duty cycledin parallel a wireless sensor network with three nodes that

  5. Distributed Motion Constraints for Algebraic Connectivity of Robotic Networks

    E-Print Network [OSTI]

    Schuresko, Michael; Cortés, Jorge

    2009-01-01T23:59:59.000Z

    E. : On synchronous robotic networks - Part I: models,a simulation environment for robotic networks. http://function associated to the robotic network. 2.1 The Graph

  6. Robust Distributed Power Control in Cognitive Radio Networks

    E-Print Network [OSTI]

    fard, Saeideh Parsaei

    2011-01-01T23:59:59.000Z

    We propose a robust distributed uplink power allocation algorithm for underlay cognitive radio networks (CRNs) with a view to maximizing the total utility of secondary users (SUs) when channel gains from SUs to primary base stations, and interference caused by primary users (PUs) to the SUs' base station are uncertain. In doing so, we utilize the worst-case robust optimization to keep the interference caused by SUs to each primary base station below a given threshold, and satisfy the SUs' quality of service for all realizations of uncertainty. We model each uncertain parameter by a bounded distance between its estimated and exact values, and formulate the robust power allocation problem via protection values for constraints. We demonstrate that the convexity of our problem is preserved, and in some cases converts into a geometric programming problem, which we solve via a distributed algorithm by using Lagrange dual decomposition. To reduce the cost of robustness, defined as the reduction in the total utility ...

  7. FEL3330 Networked and Multi-Agent Control Lecture 11: Distributed Estimation

    E-Print Network [OSTI]

    Dimarogonas, Dimos

    FEL3330 Networked and Multi-Agent Control Systems Lecture 11: Distributed Estimation Distributed Estimation Distributed Localization FEL3330, Lecture 11 1 June 8, 2011 #12;Distributed Estimation is from the fact that P-1^x = HR-1 V y. FEL3330, Lecture 11 2 June 8, 2011 #12;Distributed Estimation Each

  8. Florida Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear Jan Feb Mar Apr May Jun JulIndustrial

  9. Florida Natural Gas Pipeline and Distribution Use Price (Dollars per

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear Jan Feb Mar Apr May Jun

  10. Georgia Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear JanPriceIndustrial Consumers (Number of

  11. Georgia Natural Gas Pipeline and Distribution Use Price (Dollars per

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear JanPriceIndustrial Consumers (Number

  12. Hawaii Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearperHOW TO OBTAINCommercialPipeline and

  13. Idaho Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearperHOWYear-MonthExportsLease (Million

  14. advanced underground gas: Topics by E-print Network

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

    a stream of gas from a CO2 well in southwestern Colorado with a Vacuum Pressure Swing Adsorption (VPSA) plant. The gas from the well contains argon at a concentration of...

  15. automobile gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 58 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  16. application systems gas: Topics by E-print Network

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

    Paul 2013-04-30 190 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  17. advanced gas turbines: Topics by E-print Network

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

    Alan) 2003-01-01 63 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  18. aviation gas turbines: Topics by E-print Network

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

    Alan) 2003-01-01 55 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  19. advanced gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 63 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  20. aircraft gas turbines: Topics by E-print Network

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

    Alan) 2003-01-01 62 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  1. aircraft gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 62 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  2. advanced gas reactor: Topics by E-print Network

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

    2012-12-07 165 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  3. aviation gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 55 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  4. automotive gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 56 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  5. aero gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 56 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  6. arterial gas embolism: Topics by E-print Network

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

    developmen energy conservation transportation carbon offs student facult;greenhouse gas inventory green development energy conservation transportation carbon offsets student...

  7. adsorption gas chromatography: Topics by E-print Network

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

    Mobility Spectrometry, Gas ChromatographyMass Spectrometry, and Ion Mobility Spectrometry with Chemometric Analysis. Open Access Theses and Dissertations Summary:...

  8. Flow distribution analysis on the cooling tube network of ITER thermal shield

    SciTech Connect (OSTI)

    Nam, Kwanwoo; Chung, Wooho; Noh, Chang Hyun; Kang, Dong Kwon; Kang, Kyoung-O; Ahn, Hee Jae; Lee, Hyeon Gon [ITER Korea, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)

    2014-01-29T23:59:59.000Z

    Thermal shield (TS) is to be installed between the vacuum vessel or the cryostat and the magnets in ITER tokamak to reduce the thermal radiation load to the magnets operating at 4.2K. The TS is cooled by pressurized helium gas at the inlet temperature of 80K. The cooling tube is welded on the TS panel surface and the composed flow network of the TS cooling tubes is complex. The flow rate in each panel should be matched to the thermal design value for effective radiation shielding. This paper presents one dimensional analysis on the flow distribution of cooling tube network for the ITER TS. The hydraulic cooling tube network is modeled by an electrical analogy. Only the cooling tube on the TS surface and its connecting pipe from the manifold are considered in the analysis model. Considering the frictional factor and the local loss in the cooling tube, the hydraulic resistance is expressed as a linear function with respect to mass flow rate. Sub-circuits in the TS are analyzed separately because each circuit is controlled by its own control valve independently. It is found that flow rates in some panels are insufficient compared with the design values. In order to improve the flow distribution, two kinds of design modifications are proposed. The first one is to connect the tubes of the adjacent panels. This will increase the resistance of the tube on the panel where the flow rate is excessive. The other design suggestion is that an orifice is installed at the exit of tube routing where the flow rate is to be reduced. The analysis for the design suggestions shows that the flow mal-distribution is improved significantly.

  9. Radiation detection and situation management by distributed sensor networks

    SciTech Connect (OSTI)

    Jan, Frigo [Los Alamos National Laboratory; Mielke, Angela [Los Alamos National Laboratory; Cai, D Michael [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Detection of radioactive materials in an urban environment usually requires large, portal-monitor-style radiation detectors. However, this may not be a practical solution in many transport scenarios. Alternatively, a distributed sensor network (DSN) could complement portal-style detection of radiological materials through the implementation of arrays of low cost, small heterogeneous sensors with the ability to detect the presence of radioactive materials in a moving vehicle over a specific region. In this paper, we report on the use of a heterogeneous, wireless, distributed sensor network for traffic monitoring in a field demonstration. Through wireless communications, the energy spectra from different radiation detectors are combined to improve the detection confidence. In addition, the DSN exploits other sensor technologies and algorithms to provide additional information about the vehicle, such as its speed, location, class (e.g. car, truck), and license plate number. The sensors are in-situ and data is processed in real-time at each node. Relevant information from each node is sent to a base station computer which is used to assess the movement of radioactive materials.

  10. Power Allocation and Admission Control in Multiuser Relay Networks via Convex Programming: Centralized and Distributed Schemes

    E-Print Network [OSTI]

    Phan, Khoa T.

    The power allocation problem for multiuser wireless networks is considered under the assumption of amplify-and-forward cooperative diversity. Specifically, optimal centralized and distributed power allocation strategies ...

  11. Minimization of Blast furnace Fuel Rate by Optimizing Burden and Gas Distribution

    SciTech Connect (OSTI)

    Dr. Chenn Zhou

    2012-08-15T23:59:59.000Z

    The goal of the research is to improve the competitive edge of steel mills by using the advanced CFD technology to optimize the gas and burden distributions inside a blast furnace for achieving the best gas utilization. A state-of-the-art 3-D CFD model has been developed for simulating the gas distribution inside a blast furnace at given burden conditions, burden distribution and blast parameters. The comprehensive 3-D CFD model has been validated by plant measurement data from an actual blast furnace. Validation of the sub-models is also achieved. The user friendly software package named Blast Furnace Shaft Simulator (BFSS) has been developed to simulate the blast furnace shaft process. The research has significant benefits to the steel industry with high productivity, low energy consumption, and improved environment.

  12. Models, Calculation and Optimization of Gas Networks, Equipment and Contracts for Design, Operation, Booking and Accounting

    E-Print Network [OSTI]

    Ostromuhov, Leonid A

    2011-01-01T23:59:59.000Z

    There are proposed models of contracts, technological equipment and gas networks and methods of their optimization. The flow in network undergoes restrictions of contracts and equipment to be operated. The values of sources and sinks are provided by contracts. The contract models represent (sub-) networks. The simplest contracts represent either nodes or edges. Equipment is modeled by edges. More sophisticated equipment is represented by sub-networks. Examples of such equipment are multi-poles and compressor stations with many entries and exits. The edges can be of different types corresponding to equipment and contracts. On such edges, there are given systems of equation and inequalities simulating the contracts and equipment. On this base, the methods proposed that allow: calculation and control of contract values for booking on future days and for accounting of sales and purchases; simulation and optimization of design and of operation of gas networks. These models and methods are realized in software syst...

  13. Information Infrastructures in Distributed Environments: Algorithms for Mobile Networks and Resource Allocation 

    E-Print Network [OSTI]

    Chung, Hyun-Chul

    2013-10-28T23:59:59.000Z

    A distributed system is a collection of computing entities that communicate with each other to solve some problem. Distributed systems impact almost every aspect of daily life (e.g., cellular networks and the Internet); ...

  14. Spatial distribution of interstellar gas in the innermost 3 kpc of our Galaxy

    E-Print Network [OSTI]

    Katia Ferriere; William Gillard; Pierre Jean

    2007-02-20T23:59:59.000Z

    We review the present observational knowledge on the spatial distribution and the physical state of the different (molecular, atomic and ionized) components of the interstellar gas in the innermost 3 kpc of our Galaxy -- a region which we refer to as the interstellar Galactic bulge, to distinguish it from its stellar counterpart. We try to interpret the observations in the framework of recent dynamical models of interstellar gas flows in the gravitational potential of a barred galaxy. Finally, relying on both the relevant observations and their theoretical interpretation, we propose a model for the space-averaged density of each component of the interstellar gas in the interstellar Galactic bulge.

  15. Non-extensive distributions for a relativistic Fermi Gas

    E-Print Network [OSTI]

    Ro?ynek, Jacek

    2015-01-01T23:59:59.000Z

    Recently the non-extensive approach has been used in a variety of ways to describe dense nuclear matter. They differ in the methods of introducing the appropriate non-extensive single particle distributions inside a relativistic many-body system, in particular when one has to deal both with particles and antiparticles, as in the case of quark matter exemplified in the NJL approach. I present and discuss in detail the physical consequences of the methods used so far, which should be recognized before any physical conclusions can be reached from the results presented.

  16. Alabama Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B u o fCommercial (Million Cubic

  17. Alabama Natural Gas Pipeline and Distribution Use Price (Dollars per

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B u o fCommercial (Million

  18. Alaska Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B uYear (Million Cubic Feet) Alaska

  19. Alaska Natural Gas Pipeline and Distribution Use Price (Dollars per

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B uYear (Million Cubic Feet)

  20. Multi-Agent Approach to Electrical Distribution Networks Control Sbastien Rumley*, Elvira Kgi*, Hugh Rudnick, Alain Germond*

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    Multi-Agent Approach to Electrical Distribution Networks Control Sébastien Rumley*, Elvira Kägi distribution networks is proposed. Traditionally, the medium-voltage part of the electrical grid is operated the insertion of distributed generation in the energy distribution network. This paper presents one of them

  1. artificial nobel gas: Topics by E-print Network

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

    Global Optimization (Stochastic Approaches ). Carlos Fernandes 2005-03-02 482 Dynamics of artificial spin ice: a continuous honeycomb network MIT - DSpace Summary: We model the...

  2. abiogenic gas: Topics by E-print Network

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

    representative example, and introduce a new parameter characterizing the level of small scale clustering in these scenarios. We show that viable Generalized Chaplygin Gas...

  3. advanced hot gas: Topics by E-print Network

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

    Recent ROSAT observations indicate gas temperatures in excess of the virial stellar temperature, totally unlike standard cooling flow models. However, these new results can be...

  4. advanced automotive gas: Topics by E-print Network

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

    the environment and legislation introduced to reduce greenhouse gas emissions and improve resource efficiency, eco product design and manufacturing strategies have to be developed...

  5. abscess gas formation: Topics by E-print Network

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

    of these two wells enables angular ... Miller, Douglas E. 69 Characterizing water-in-oil emulsions with application to gas hydrate formation. Open Access Theses and...

  6. abandons gas storage: Topics by E-print Network

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

    laboratory worker with identification, storage, maintenance, Chemistry Websites Summary: Compressed Gas Safety The purpose of this section is to assist the laboratory worker....

  7. associated gas: Topics by E-print Network

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

    Administration to become the nation's energy landscape. However, the environmental impacts associated with fracking'' for shale gas Angenent, Lars T. 120 The effects of...

  8. acid gas removal: Topics by E-print Network

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

    cost. In mixed matrix membrane (MMM) superior gas separation properties of inorganic membranes and economical processes ability of polymeric membranes are exploited by combining...

  9. annual greenhouse gas: Topics by E-print Network

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

    as a transportation mode. Federal government initiatives on the US 34 Nuclear Power PROS -No' greenhouse gas emissions Geosciences Websites Summary: Nuclear Power PROS -No'...

  10. agroecosystem greenhouse gas: Topics by E-print Network

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

    Sciences Websites Summary: Determining Air Quality and Greenhouse Gas Impacts of Hydrogen Infrastructure and Fuel Cell engine (ICE) vehicles has been proposed as a strategy to...

  11. Optimal reverse carpooling over wireless networks - a distributed optimization approach

    E-Print Network [OSTI]

    Parandehgheibi, Ali

    We focus on a particular form of network coding, reverse carpooling, in a wireless network where the potentially coded transmitted messages are to be decoded immediately upon reception. The network is fixed and known, and ...

  12. IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 1 An In-Network Querying Framework for Wireless

    E-Print Network [OSTI]

    Demirbas, Murat

    -network querying in a distributed, lightweight, resilient and energy-efficient manner. We address these challenges by exploiting location information and geometry of the network and propose an in-network querying framework our framework to achieve complex range-based querying. To this end, we use a multi

  13. IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 1 An In-Network Querying Framework for Wireless

    E-Print Network [OSTI]

    Demirbas, Murat

    -network querying in a distributed, lightweight, resilient and energy-efficient manner. We address these challenges by exploiting location information and geometry of the network and propose an in-network querying framework of inquiries, we further extend our framework to achieve complex range-based querying. To this end, we use

  14. Non-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Davis, University of

    -non-homogeneity in the network. Bottleneck nodes trade computation energy for transmission energy, which extends and normalizesNon-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks to increase the network's lifetime and to normalize the energy use per unit time, but they each have

  15. FaultTolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks

    E-Print Network [OSTI]

    Fault­Tolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks (SPAWN) BETTINA WEISS communication technologies, wireless ad hoc networks are increasingly commonplace nowadays. Spontaneous (``ad wireless sensor networks and disaster area communication systems. It is also a major enabling technology

  16. Connectivity-based Distributed Coverage Hole Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Connectivity-based Distributed Coverage Hole Detection in Wireless Sensor Networks Feng Yan as an important measure of quality of service provided by a wireless sensor network (WSN). Yet, coverage holes may. INTRODUCTION Wireless sensor networks (WSNs) have attracted significant research attention due to their wide

  17. An Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    . A microgrid is a small scale power network, which contains one or multiple types of renewable power generators complicated with the adoption of energy storage [5]. For a power network, the amount of energy generationAn Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems

  18. Fully Distributed Trust Model based on Trust Graph for Mobile Ad hoc Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    University of Technology, France. bouabdal@hds.utc.fr Abstract A mobile ad hoc network (MANET) is a wireless pre-existing in- frastructure; all networking operations (routing, mobility management, and so onFully Distributed Trust Model based on Trust Graph for Mobile Ad hoc Networks Mawloud Omar, Yacine

  19. australian natural gas: Topics by E-print Network

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

    natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Australian Shale Gas Assessment Project...

  20. american natural gas: Topics by E-print Network

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

    american natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 2007 FINAL NATURAL GAS MARKET...

  1. alaska natural gas: Topics by E-print Network

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

    alaska natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Alaska Natural Gas Development...

  2. affecting natural gas: Topics by E-print Network

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

    natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 NATURAL GAS MARKET ASSESSMENT Energy...

  3. advanced natural gas: Topics by E-print Network

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

    natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Natural Gas-optimized Advanced Heavy-duty...

  4. architecture natural gas: Topics by E-print Network

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

    architecture natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 NATURAL GAS MARKET ASSESSMENT...

  5. aerial natural gas: Topics by E-print Network

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

    aerial natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A Low-Cost Natural GasFreshwater...

  6. ao gas natural: Topics by E-print Network

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

    ao gas natural First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 NATURAL GAS MARKET ASSESSMENT Energy...

  7. Maximum Entropy Models of Shortest Path and Outbreak Distributions in Networks

    E-Print Network [OSTI]

    Bauckhage, Christian; Hadiji, Fabian

    2015-01-01T23:59:59.000Z

    Properties of networks are often characterized in terms of features such as node degree distributions, average path lengths, diameters, or clustering coefficients. Here, we study shortest path length distributions. On the one hand, average as well as maximum distances can be determined therefrom; on the other hand, they are closely related to the dynamics of network spreading processes. Because of the combinatorial nature of networks, we apply maximum entropy arguments to derive a general, physically plausible model. In particular, we establish the generalized Gamma distribution as a continuous characterization of shortest path length histograms of networks or arbitrary topology. Experimental evaluations corroborate our theoretical results.

  8. Distributed Optimization, Estimation, and Control of Networked Systems through Event-triggered Message Passing

    E-Print Network [OSTI]

    Lemmon, Michael

    -triggered Message Passing 1 Introduction This project will investigate distributed optimization, estimation, and control of networked systems through the use of event-triggered message passing. Networked systems consist of distributed decision systems. Indi- vidual agents coordinate their actions through message exchanges

  9. Probabilistic Modelling of Plug-in Hybrid Electric Vehicle Impacts on Distribution Networks in

    E-Print Network [OSTI]

    Victoria, University of

    Probabilistic Modelling of Plug-in Hybrid Electric Vehicle Impacts on Distribution Networks Committee Probabilistic Modelling of Plug-in Hybrid Electric Vehicle Impacts on Distribution Networks) Departmental Member Plug-in hybrid electric vehicles (PHEVs) represent a promising future direction

  10. Smart Messages: A Distributed Computing Platform for Networks of Embedded Systems

    E-Print Network [OSTI]

    Rutgers University

    Smart Messages: A Distributed Computing Platform for Networks of Embedded Systems Porlin Kang In this paper, we present the design and imple- mentation of Smart Messages, a distributed comput- ing platform Following the rapid development of sensor net- work technologies [12, 26­28, 32], networks of em- bedded

  11. Distributed Image-Based 3-D Localization of Camera Sensor Networks Roberto Tron and Rene Vidal

    E-Print Network [OSTI]

    Distributed Image-Based 3-D Localization of Camera Sensor Networks Roberto Tron and Ren´e Vidal Abstract-- We consider the problem of distributed estimation of the poses of N cameras in a camera sensor network using image measurements only. The relative rotation and translation (up to a scale factor

  12. Identifiability of Flow Distributions from Link Measurements with Applications to Computer Networks

    E-Print Network [OSTI]

    Michailidis, George

    Identifiability of Flow Distributions from Link Measurements with Applications to Computer Networks Abstract We study the problem of identifiability of distributions of flows on a graph from aggregate by recent developments in computer networks. In this paper (i) we introduce a number of models for multi

  13. affects vegf distribution: Topics by E-print Network

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

    Application: n Enderton, Herbert B. 87 Gas Phase Processes Affecting Galactic Evolution Astrophysics (arXiv) Summary: Gas processes affecting star formation are...

  14. Size distributions of ionic aerosols measured at Waliguan Observatory: Implication for nitrate gas-to-particle

    E-Print Network [OSTI]

    Jacobson, Mark

    Size distributions of ionic aerosols measured at Waliguan Observatory: Implication for nitrate gas Plateau. Size-resolved ionic aerosols (NH4 + , Na+ , K+ , Ca2+ , Mg2+ , SO4 2À , ClÀ , NO3 À CO3 2À , formate, acetate and oxalate), organic aerosols, black carbon and gaseous HNO3 and SO2 were measured

  15. Abstract--This paper presents the impact of different types of load models in distribution network with distributed wind

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    as a major enabler of the smart grid for the integration of small and medium sized renewable energy based that modeling of loads has a significant impact on the voltage dynamics of the distribution systemAbstract--This paper presents the impact of different types of load models in distribution network

  16. Network Coding in Distributed, Dynamic, and Wireless Environments: Algorithms and Applications

    E-Print Network [OSTI]

    Chaudhry, Mohammad

    2012-02-14T23:59:59.000Z

    NETWORK CODING IN DISTRIBUTED, DYNAMIC, AND WIRELESS ENVIRONMENTS: ALGORITHMS AND APPLICATIONS A Dissertation by MOHAMMAD ASAD REHMAN CHAUDHRY Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment... of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2011 Major Subject: Electrical Engineering Network Coding in Distributed, Dynamic, and Wireless Environments: Algorithms and Applications Copyright 2011 Mohammad Asad Rehman Chaudhry NETWORK...

  17. A New Linearization Method of Unbalanced Electrical Distribution Networks

    SciTech Connect (OSTI)

    Liu, Guodong [ORNL; Xu, Yan [ORNL; Ceylan, Oguzhan [ORNL; Tomsovic, Kevin [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    Abstract--- With increasing penetration of distributed generation in the distribution networks (DN), the secure and optimal operation of DN has become an important concern. As DN control and operation strategies are mostly based on the linearized sensitivity coefficients between controlled variables (e.g., node voltages, line currents, power loss) and control variables (e.g., power injections, transformer tap positions), efficient and precise calculation of these sensitivity coefficients, i.e. linearization of DN, is of fundamental importance. In this paper, the derivation of the node voltages and power loss as functions of the nodal power injections and transformers' tap-changers positions is presented, and then solved by a Gauss-Seidel method. Compared to other approaches presented in the literature, the proposed method takes into account different load characteristics (e.g., constant PQ, constant impedance, constant current and any combination of above) of a generic multi-phase unbalanced DN and improves the accuracy of linearization. Numerical simulations on both IEEE 13 and 34 nodes test feeders show the efficiency and accuracy of the proposed method.

  18. abundant molecular gas: Topics by E-print Network

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

    2000-11-08 51 Molecular gas heating in Arp 299 CERN Preprints Summary: Understanding the heating and cooling mechanisms in nearby (Ultra) luminous infrared galaxies can give us...

  19. automated gas chromatography: Topics by E-print Network

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

    Brown Boveri (ABB) robotic arm with a modified heated head capable of hot gas and focused infrared heating and a 7' x 17' gantry containing a feeder head, rotating platform,...

  20. aligned tight gas: Topics by E-print Network

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

    Reservoirs Using The Dynamic Conductivity Test Texas A&M University - TxSpace Summary: Hydraulic Fracturing stimulation technology is used to increase the amount of oil and gas...

  1. adsorbed natural gas: Topics by E-print Network

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

    SNG for Electricity below, show the life-cycle stages on natural gas used by electric power generators, including the stages from the LNG life-cycle. Notice that local...

  2. air gas turbine: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 A Silicon-Based Micro Gas Turbine Engine for Power Generation CERN Preprints Summary: This paper reports on our...

  3. acid gas generation: Topics by E-print Network

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

    the history of galaxy formation. Jason X. Prochaska 2002-08-06 48 A Silicon-Based Micro Gas Turbine Engine for Power Generation CERN Preprints Summary: This paper reports on our...

  4. addressing gas generation: Topics by E-print Network

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

    Srikanta Bedathur; Thomas Neumann; Gerhard Weikum 2007-01-01 40 A Silicon-Based Micro Gas Turbine Engine for Power Generation CERN Preprints Summary: This paper reports on our...

  5. alcohol gas additives: Topics by E-print Network

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

    Additives That Prevent Or Reverse Cathode Aging In Drift Chambers With Helium-Isobutane Gas HEP - Experiment (arXiv) Summary: Noise and Malter breakdown have been studied at high...

  6. anisotropic gas diffusion: Topics by E-print Network

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

    2014 Keywords: Low-temperature combustion syn- thesis Tungsten carbide Electrocatalyst Gas diffusion electrode a b s t r a c t Tungsten carbide powder, which is used as the...

  7. atomic hydrogen gas: Topics by E-print Network

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

    grapes into wine wasn material in the wastewater into hydrogen gas. There is a lot more energy locked in the wastewater than to experience wine making and wine, and now they can...

  8. atomic fermi gas: Topics by E-print Network

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

    atomic Fermi gases. G. M. Bruun 2002-10-29 4 Fermi excitations in a trapped atomic Fermi gas with a molecular Bose condensate Condensed Matter (arXiv) Summary: We discuss the...

  9. angstrom noble gas: Topics by E-print Network

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

    (AMS) and Atom Trap Trace Analysis (ATTA). Collon, P; Lu, Z T 2004-01-01 5 Tracing Noble Gas Radionuclides in the Environment Nuclear Experiment (arXiv) Summary: Trace analysis of...

  10. atomic gas viva: Topics by E-print Network

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

    Wei; Yue, Xuguang; Zhai, Yueyang; Chen, Xuzong 2013-01-01 5 A momentum filter for atomic gas Quantum Physics (arXiv) Summary: We propose and demonstrate a momentum filter for...

  11. atmospheric trace gas: Topics by E-print Network

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

    Websites Summary: enrichments of 22.8 f 2.2 in the concentrations of Ir, SC and the rare earths relative to Cl chondrites of refractory trace metals from a gas of solar...

  12. An Evaluation of the Network Simulators in Large-Scale Distributed Simulations

    SciTech Connect (OSTI)

    Ciraci, Selim; Akyol, Bora A.

    2011-11-13T23:59:59.000Z

    This is a survey paper about the state-of-the-art in large-scale network simulation. Networks for the smart grids are characterized by millions of sensor nodes exchanging information about the status of the grid. This information exchange must be realized reliably and efficiently due to the mission critical nature of the power grid. Hence, the applications and the network protocols developed for the smart grid need go through rigorous testing and analysis before deployment. Developers usually do not have access to such a large-scale network that can be used as a controlled test-bed; therefore, network simulation becomes an essential tool for testing. Network simulation is a well studied problem in the literature and there are various widely used network simulators. These simulators can be adopted for testing applications and protocols of the smart grid. Due to the scale of these networks, parallel/distributed simulations need to be conducted. Even though most network simulators support distributed simulations, generating a large-scale network model to simulate can still be a cumbersome task. In this survey, we describe a selection of commonly used network simulators and evaluate them with respect to the following features that can aid users in distributed simulations of large-scale networks: transparency of setting up distributed simulation, automated topology generation, information hiding, lightweight routing protocols, network error simulation, evaluation of the network model during simulation and trace analysis tools. As a complementary result, we identify two issues with network simulators that can be addressed with runtime steering methods.

  13. Consensus Filters for Sensor Networks and Distributed Sensor Fusion Reza Olfati-Saber and Jeff S. Shamma

    E-Print Network [OSTI]

    Shamma, Jeff S.

    Consensus Filters for Sensor Networks and Distributed Sensor Fusion Reza Olfati-Saber and Jeff S for sensor fusion in sensor networks. This paper introduces a distributed filter that allows the nodes of a sensor network to track the average of n sensor measurements using an average consensus based distributed

  14. Distributed Network Monitoring using Mobile Agents Paradigm Farhad Kamangar, David Levine, Gergely V. Zruba, and Navakiran Chitturi

    E-Print Network [OSTI]

    Záruba, Gergely

    Distributed Network Monitoring using Mobile Agents Paradigm Farhad Kamangar, David Levine, Gergely for distributed and dynamic network monitoring, using mobile agents. We use the IBM Aglets system and show how a Java-based distributed network monitoring application can use this paradigm for efficient data

  15. Abstract-The distribution network reconfiguration is a process that consists of changing the status of the

    E-Print Network [OSTI]

    Lai, Hong-jian

    Abstract-The distribution network reconfiguration is a process that consists of changing the status of the numerous combinations of candidate switches. A multi-agent based system for distribution network Edison (SCE). Index Terms- Smart Distribution Network, Fault Reconfiguration, Graph Theory, Multi

  16. arbitrarily distributed samples: Topics by E-print Network

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

    Distributed Transaction Management Parallel Database Systems Distributed Object DBMS Chen, Yangjun 405 Quantum Metropolis Sampling CERN Preprints Summary: Quantum...

  17. alters mitochondrial distribution: Topics by E-print Network

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

    Distributed Transaction Management Parallel Database Systems Distributed Object DBMS Chen, Yangjun 286 Phylogeny, Recombination, and Mechanisms of Stepwise Mitochondrial...

  18. Influence of Permian salt dissolution on distribution of shallow Niobrara gas fields, eastern Colorado

    SciTech Connect (OSTI)

    Oldham, D.W.; Smosna, R.A. [West Virginia Univ., Morgantown, WV (United States)

    1996-06-01T23:59:59.000Z

    Subsurface analysis of Permian salt and related strata in the shallow Niobrara gas area on the eastern flank of the Denver basin reveals that the location of faulted anticlines which produce gas from porous chalk is related to the occurrence of six Nippewalla Group (Leonardian) salt zones. Salt distribution is controlled by the configuration of evaporate basins during the Leonardian, truncation at a sub-Jurassic unconformity (which has completely removed Guadalupian salts), and post-Jurassic subsurface dissolution. Significant dissolution took place in response to Laramide orogeny and subsequent eastward regional groundwater flow within the Lyons (Cedar Hills) Sandstone aquifer. Initially, dissolution occurred along a regional facies change from sandstone to salt. Solution collapse allowed for cross-formational flow and removal of younger salts. Shallow Niobrara gas fields are situated above salt outliers or along regionally updip salt edges. No significant Niobrara production exists in areas where salt is absent. Structural relief across fields is related to Leonardian thickness variations, rather than subsalt offset. Seismic data reveal abrupt Leonardian thinning at the regionally updip limit of Eckley field, which has produced over 33 BCFG. Thickness of residual salt may be important in controlling the amount of gas trapped within the Niobrara. Where thick salts are preserved, structural relief is greater, the gas-water transition zone is thicker, and gas saturation is higher at the crests of faulted anticlines.

  19. Laser Spectroscopic Trace-Gas Sensor Networks for Atmospheric Monitoring Applications

    E-Print Network [OSTI]

    Zhong, Lin

    a laser based chemical sensing technology with wide-area autonomous wireless sensor networking@princeton.edu ABSTRACT Laser-based atmospheric trace-gas sensors have great potential for long-term, real such as CO2, NOx, and methane with exceptionally high specificity. Categories and Subject Descriptors C.3

  20. Robust Networked Control Scheme for Distributed Secondary Control of Islanded MicroGrids

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    1 Robust Networked Control Scheme for Distributed Secondary Control of Islanded MicroGrids Qobad scenarios that have an increased number of distributed generators (DGs) within the MG. Due (RES) and distributed generators (DGs), microgrids (MGs) have recently attracted a significant interest

  1. Automated di/dt Stressmark Generation for Microprocessor Power Distribution Networks

    E-Print Network [OSTI]

    John, Lizy Kurian

    Automated di/dt Stressmark Generation for Microprocessor Power Distribution Networks Youngtaek Kim for automated di/dt stressmark generation to test maximum voltage droop in a microprocessor power distribution and typical benchmarks in experiments covering three micro-processor architectures and five power distribution

  2. Tracking Cardinality Distributions in Network Aiyou Chen, Li Li and Jin Cao

    E-Print Network [OSTI]

    Li, Li Erran

    Tracking Cardinality Distributions in Network Traffic Aiyou Chen, Li Li and Jin Cao Bell Labs distributions of distinct communicating peers or flows. For example, during the worm outbreak, the port scanning in the host distributions of distinct communicating peers or flows. In this paper, we develop an efficient

  3. Web Based Distributed Network Analyzer Using SES Over Service Oriented Architecture

    E-Print Network [OSTI]

    Web Based Distributed Network Analyzer Using SES Over Service Oriented Architecture Taekyu Kim, a web- based distributed simulation approach over Service Oriented Architecture (SOA) is applied into multi-servers, increasing overall system performance. A web-based distributed simulation contains two

  4. Photovoltaic Systems Interconnected onto Secondary Network Distribution Systems – Success Stories

    Broader source: Energy.gov [DOE]

    This report examines six case studies of photovoltaic (PV) systems integrated into secondary network systems. The six PV systems were chosen for evaluation because they are interconnected to secondary network systems located in four major Solar America Cities.

  5. Robust distributed routing in dynamical networks with cascading failures

    E-Print Network [OSTI]

    Como, Giacomo

    We consider a dynamical formulation of network flows, whereby the network is modeled as a switched system of ordinary differential equations derived from mass conservation laws on directed graphs with a single origin-destination ...

  6. Trust and Independence Aware Decision Fusion in Distributed Networks

    E-Print Network [OSTI]

    California at Davis, University of

    -hop network scenario: a set of mobile or stationary nodes trying to monitor certain targets (objects, people

  7. Hybrid Neural Network for Gas Analysis Measuring System Kazimierz Brudzewski

    E-Print Network [OSTI]

    Osowski, Stanislaw

    mixtures of air with these four pollutants. The signals obtained from the sensors have been processed using with hybrid neural network, can be used to determine the individual analyte concentrations in the mixture as pollutants: carbon oxide, methane, propane/buthane and methanol vapour. A small array of five semiconductor

  8. Dynamic Optimization in Gas Pipeline Networks EWO MEETING, Spring 2012

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    (z,t) and q(z,t) Momentum Balance: Material Balance: Network Inventory: Node equations Flow balance-based ROMeo platform. ROMeo: Rigorous On-line Modeling and Equation-based Optimization Model will provide: no accumulation at nodes. Pressure balance: pressure at a node is equal to the pressure either into or out

  9. abiotic natural gas: Topics by E-print Network

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

    abiotic natural gas First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Enhanced Prognosis for Abiotic...

  10. assisting gas optimization: Topics by E-print Network

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

    assisting gas optimization First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Information for Graduate...

  11. absorption gas imaging: Topics by E-print Network

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

    9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Absorption imaging of a quasi 2D gas: a multiple scattering analysis Quantum Physics (arXiv)...

  12. Method and apparatus for reducing the harmonic currents in alternating-current distribution networks

    DOE Patents [OSTI]

    Beverly, L.H.; Hance, R.D.; Kristalinski, A.L.; Visser, A.T.

    1996-11-19T23:59:59.000Z

    An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer. 23 figs.

  13. Method and apparatus for reducing the harmonic currents in alternating-current distribution networks

    DOE Patents [OSTI]

    Beverly, Leon H. (Lockport, IL); Hance, Richard D. (Elburn, IL); Kristalinski, Alexandr L. (Naperville, IL); Visser, Age T. (Geneva, IL)

    1996-01-01T23:59:59.000Z

    An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer.

  14. Natural gas transmission and distribution model of the National Energy Modeling System

    SciTech Connect (OSTI)

    NONE

    1997-02-01T23:59:59.000Z

    The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. NEMS was developed in the Office of Integrated Analysis and Forecasting of the Energy Information Administration (EIA). NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the EIA and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. From 1982 through 1993, the Intermediate Future Forecasting System (IFFS) was used by the EIA for its analyses, and the Gas Analysis Modeling System (GAMS) was used within IFFS to represent natural gas markets. Prior to 1982, the Midterm Energy Forecasting System (MEFS), also referred to as the Project Independence Evaluation System (PIES), was employed. NEMS was developed to enhance and update EIA`s modeling capability by internally incorporating models of energy markets that had previously been analyzed off-line. In addition, greater structural detail in NEMS permits the analysis of a broader range of energy issues. The time horizon of NEMS is the midterm period (i.e., through 2015). In order to represent the regional differences in energy markets, the component models of NEMS function at regional levels appropriate for the markets represented, with subsequent aggregation/disaggregation to the Census Division level for reporting purposes.

  15. Mobile Codes Localization in Ad hoc Networks: a Comparative Study of Centralized and Distributed Approaches

    E-Print Network [OSTI]

    Zafoune, Youcef; kanawati, Rushed; 10.5121/ijcnc.2010.2213

    2010-01-01T23:59:59.000Z

    This paper presents a new approach in the management of mobile ad hoc networks. Our alternative, based on mobile agent technology, allows the design of mobile centralized server in ad hoc network, where it is not obvious to think about a centralized management, due to the absence of any administration or fixed infrastructure in these networks. The aim of this centralized approach is to provide permanent availability of services in ad hoc networks which are characterized by a distributed management. In order to evaluate the performance of the proposed approach, we apply it to solve the problem of mobile code localization in ad hoc networks. A comparative study, based upon a simulation, of centralized and distributed localization protocols in terms of messages number exchanged and response time shows that the centralized approach in a distributed form is more interesting than a totally centralized approach.

  16. Single-Commodity Robust Network Design with Finite and Hose ...

    E-Print Network [OSTI]

    2015-01-26T23:59:59.000Z

    Gas and energy distribution networks also ship a single commodity, but since we do not want to ... We show a natural adaption of the Hose model to single-.

  17. acid distribution pattern: Topics by E-print Network

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

    addressing these problems. It first monitors 3 Patterns of heterochromatin distribution in plant chromosomes CiteSeer Summary: The C-band distribution patterns of 105...

  18. asymmetric momentum distribution: Topics by E-print Network

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

    quark production. Daniel Boer 2012-09-01 5 Momentum distribution of confined bosons: temperature dependence Quantum Physics (arXiv) Summary: The momentum distribution function of a...

  19. axial power distribution: Topics by E-print Network

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

    ON POWER SYSTEMS, VOL. 29, NO. 1, JANUARY 2014 203 Distribution Locational Marginal Pricing for Optimal Power Transmission, Distribution and Plants Websites Summary:...

  20. ac power distribution: Topics by E-print Network

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

    ON POWER SYSTEMS, VOL. 29, NO. 1, JANUARY 2014 203 Distribution Locational Marginal Pricing for Optimal Power Transmission, Distribution and Plants Websites Summary:...

  1. A phased approach to distribution network optimization given incremental supply chain change

    E-Print Network [OSTI]

    Riechel, Patrick

    2012-01-01T23:59:59.000Z

    This thesis addresses the question of how to optimize a distribution network when the supply chain has undergone an incremental change. A case study is presented for Company A, a major global biotechnology company that ...

  2. Water Distribution System Monitoring and Decision Support Using a Wireless Sensor Network

    E-Print Network [OSTI]

    Allen, Michael

    Water distribution systems comprise labyrinthine networks of pipes, often in poor states of repair, that are buried beneath our city streets and relatively inaccessible. Engineers who manage these systems need reliable ...

  3. Robust Distributed Routing in Dynamical Networks - Part II: Strong Resilience, Equilibrium Selection and Cascaded Failures

    E-Print Network [OSTI]

    Como, Giacomo

    Strong resilience properties of dynamical networks are analyzed for distributed routing policies. The latter are characterized by the property that the way the outflow at a non-destination node gets split among its outgoing ...

  4. Optimal location of cross-docking centers for a distribution network in Argentina

    E-Print Network [OSTI]

    Dobrusky, Fernando G. (Fernando Gabriel), 1971-

    2003-01-01T23:59:59.000Z

    The objective of this thesis is to define an optimal distribution network for Argentina using Cross Docking Centers. The products to be delivered are in a Central Warehouse in Buenos Aires, the main city and port of ...

  5. A differentiable dynamic network loading model that yields queue length distributions and accounts for spillback

    E-Print Network [OSTI]

    Bierlaire, Michel

    A differentiable dynamic network loading model that yields queue length distributions and accounts, this is so because the kinematic wave model (KWM), the mainstay of traffic flow theory, only applies for spillback Carolina Osorio Gunnar Fl¨otter¨od Michel Bierlaire Abstract We derive a dynamic network

  6. PERFORMANCE OF DISTRIBUTED UTILITY-BASED POWER CONTROL FOR WIRELESS AD HOC NETWORKS

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    PERFORMANCE OF DISTRIBUTED UTILITY-BASED POWER CONTROL FOR WIRELESS AD HOC NETWORKS Jianwei Huang network. The users exchange prices that reflect their loss in utility due to interference. The prices are then used to determine optimal (utility maximizing) power levels for each user. We present simulation

  7. Local Decisions and Optimal Distributed Detection in Mobile Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Local Decisions and Optimal Distributed Detection in Mobile Wireless Sensor Networks Xusheng Sun that hybrids of them perform best. I. INTRODUCTION In an ad-hoc mobile wireless sensor network, mobile de, GA 30332­0250 Email: {xsun7, ejc}@gatech.edu Abstract--A set of mobile wireless sensors observe

  8. Distributed Mobile Disk Cover A Building Block for Mobile Backbone Networks

    E-Print Network [OSTI]

    Zussman, Gil

    1 Distributed Mobile Disk Cover ­ A Building Block for Mobile Backbone Networks Anand Srinivas, Gil of Technology Cambridge, MA 02139 {anand3, gilz, modiano}@mit.edu Abstract-- The novel hierarchical architecture of Mobile Backbone Networks has been recently studied by a few different approaches. An important subproblem

  9. Distributed connection management for real-time communication over wormhole-routed networks

    E-Print Network [OSTI]

    Sundaresan, Sharad

    1997-01-01T23:59:59.000Z

    DISTRIBUTED CONNECTION MANAGEMENT FOR REAL- TIME COMMUNICATION OVER WORMHOLE-ROUTED NETWORKS A Thesis by SHARAD SUNDARESAN Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1997 Major Subject: Computer Science DISTRIBUTED CONNECTION MANAGEMENT FOR REAL-TIME COMMUNICATION OVER WORMHOLE-ROUTED NETWORKS A Thesis by SHARAD SUNDARESAN Submitted to Texas AkM University in partial...

  10. Estimating sandstone permeability using network models with pore size distributions

    E-Print Network [OSTI]

    Mathews, Alan Ronald

    1991-01-01T23:59:59.000Z

    the effects of each parameter on the response of the network lattice. A FoR+RAv source code was written to generate and analyze the response of the network model (see Appendix G for source code description and flow chart). The controlling parameters used... in appearance to empirical data. A network model is developed to simulate the pore geometry of a clean, well-sorted sandstone. Pores were modeled as straight capillaries connected in various lattice configurations. Complex lattice configurations produce more...

  11. advanced distributed learning: Topics by E-print Network

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

    and experiences; for example, interpersonal interactions across network channels lead to the formation of virtual communities. The innovative kinds of pedagogy empowered by...

  12. Photovoltaic Systems Interconnected onto Network Distribution Systems--Success Stories

    SciTech Connect (OSTI)

    Coddington, M.; Kroposki, B.; Basso, T.; Lynn, K.; Sammon, D.; Vaziri, M.; Yohn, T.

    2009-04-01T23:59:59.000Z

    This report examines six case studies of photovoltaic systems integrated into secondary network systems in four major U.S. Solar America cities.

  13. DIFS: A Distributed Index for Features in Sensor Networks

    E-Print Network [OSTI]

    Govindan, Ramesh

    of nodes in such networks is energy. Nodes are expected to be long­lived (deployed not for hours minimize energy use. The primary energy consumer in such systems is radio transmission. For one scenario and amount of data produced increase. Consequently, in energy­constrained sensor networks it may be necessary

  14. Closed-loop real-time control on distributed networks

    E-Print Network [OSTI]

    Ambike, Ajit Dilip

    2004-11-15T23:59:59.000Z

    This thesis is an e?ort to develop closed-loop control strategies on computer networks and study their stability in the presence of network delays and packet losses. An algorithm using predictors was designed to ensure the system stability...

  15. Hindawi Publishing Corporation International Journal of Distributed Sensor Networks

    E-Print Network [OSTI]

    Lim, Sunho

    of dependability and security issues for Wireless Sensor Net- works (WSNs), Mobile Ad hoc Networks (MANETs "anonymous cluster-based MANETs with threshold signature" proposes a secure security system with anonymity robust secure localization algorithm for wireless sensor networks" proposes a localization algorithm

  16. Hindawi Publishing Corporation International Journal of Distributed Sensor Networks

    E-Print Network [OSTI]

    Savazzi, Stefano

    oil refinery sites using industry standard ISA SP100.11a compliant devices operating at 2.4 GHz. 1 is now becoming of strategic interest for several industrial applications ranging from oil and gas refining, smart factories, transport processes [1], and more recently oil and gas exploration [2

  17. GREENHOUSE GAS REDUCTION POTENTIAL WITH COMBINED HEAT AND POWER WITH DISTRIBUTED GENERATION PRIME MOVERS - ASME 2012

    SciTech Connect (OSTI)

    Curran, Scott [ORNL; Theiss, Timothy J [ORNL; Bunce, Michael [ORNL

    2012-01-01T23:59:59.000Z

    Pending or recently enacted greenhouse gas regulations and mandates are leading to the need for current and feasible GHG reduction solutions including combined heat and power (CHP). Distributed generation using advanced reciprocating engines, gas turbines, microturbines and fuel cells has been shown to reduce greenhouse gases (GHG) compared to the U.S. electrical generation mix due to the use of natural gas and high electrical generation efficiencies of these prime movers. Many of these prime movers are also well suited for use in CHP systems which recover heat generated during combustion or energy conversion. CHP increases the total efficiency of the prime mover by recovering waste heat for generating electricity, replacing process steam, hot water for buildings or even cooling via absorption chilling. The increased efficiency of CHP systems further reduces GHG emissions compared to systems which do not recover waste thermal energy. Current GHG mandates within the U.S Federal sector and looming GHG legislation for states puts an emphasis on understanding the GHG reduction potential of such systems. This study compares the GHG savings from various state-of-the- art prime movers. GHG reductions from commercially available prime movers in the 1-5 MW class including, various industrial fuel cells, large and small gas turbines, micro turbines and reciprocating gas engines with and without CHP are compared to centralized electricity generation including the U.S. mix and the best available technology with natural gas combined cycle power plants. The findings show significant GHG saving potential with the use of CHP. Also provided is an exploration of the accounting methodology for GHG reductions with CHP and the sensitivity of such analyses to electrical generation efficiency, emissions factors and most importantly recoverable heat and thermal recovery efficiency from the CHP system.

  18. Characterizing short-term stability for Boolean networks over any distribution of transfer functions

    E-Print Network [OSTI]

    C. Seshadhri; Andrew M. Smith; Yevgeniy Vorobeychik; Jackson Mayo; Robert C. Armstrong

    2014-09-15T23:59:59.000Z

    We present a characterization of short-term stability of random Boolean networks under \\emph{arbitrary} distributions of transfer functions. Given any distribution of transfer functions for a random Boolean network, we present a formula that decides whether short-term chaos (damage spreading) will happen. We provide a formal proof for this formula, and empirically show that its predictions are accurate. Previous work only works for special cases of balanced families. It has been observed that these characterizations fail for unbalanced families, yet such families are widespread in real biological networks.

  19. Accurate Estimation of the Degree Distribution of Private Networks Michael Hay, Chao Li, Gerome Miklau, and David Jensen

    E-Print Network [OSTI]

    Keinan, Alon

    Accurate Estimation of the Degree Distribution of Private Networks Michael Hay, Chao Li, Gerome private estimate of the degree distribution of a network. The algorithm satisfies a rigorous property of differential privacy, and is also extremely efficient, running on networks of 100 million nodes in a few

  20. Distributed connection acceptance control for a connectionless network \\Lambda R. J. Gibbens and F. P. Kelly a

    E-Print Network [OSTI]

    Kelly, Frank

    Distributed connection acceptance control for a connectionless network \\Lambda R. J. Gibbens and F be distributed to end­ systems, with the packet network unaware even that the packets it carries come from higher. We describe how a packet network with a simple pricing mechanism and no connection acceptance control

  1. Systematic Studies of the Gas Humidification Effects on Spatial PEMFC Performance Distributions

    SciTech Connect (OSTI)

    Reshetenko, T. V.; Bender, G.; Bethune, K.; Rocheleau, R.

    2012-05-01T23:59:59.000Z

    The overall current density that is measured in a proton exchange membrane fuel cell (PEMFC) represents the average of the local reaction rates. The overall and local PEMFC performances are determined by several primary loss mechanisms, namely activation, ohmic, and mass transfer. Spatial performance and loss variabilities are significant and depend on the cell design and operating conditions. A segmented cell system was used to quantify different loss distributions along the gas channel to understand the effects of gas humidification. A reduction in the reactant stream humidification decreased cell performance and resulted in non-uniform distributions of overpotentials and performance along the flow field. Activation and ohmic overpotentials increased with a relative humidity decrease due to insufficient membrane and catalyst layer hydration. The relative humidity of the cathode had a strong impact on the mass transfer overpotential due to a lower oxygen permeability through the dry Nafion film covering the catalyst surface. The mass transfer loss distribution was non-uniform, and the mass transfer overpotential increased for the outlet segments due to the oxygen consumption at the inlet segments, which reduced the oxygen concentration downstream, and a progressive water accumulation from upstream segments. Electrochemical impedance spectroscopy (EIS) and an equivalent electric circuit (EEC) facilitated the analysis and interpretation of the segmented cell data.

  2. Model documentation Natural Gas Transmission and Distribution Model of the National Energy Modeling System. Volume 1

    SciTech Connect (OSTI)

    NONE

    1996-02-26T23:59:59.000Z

    The Natural Gas Transmission and Distribution Model (NGTDM) of the National Energy Modeling System is developed and maintained by the Energy Information Administration (EIA), Office of Integrated Analysis and Forecasting. This report documents the archived version of the NGTDM that was used to produce the natural gas forecasts presented in the Annual Energy Outlook 1996, (DOE/EIA-0383(96)). The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic approach, and provides detail on the methodology employed. Previously this report represented Volume I of a two-volume set. Volume II reported on model performance, detailing convergence criteria and properties, results of sensitivity testing, comparison of model outputs with the literature and/or other model results, and major unresolved issues.

  3. abundance depth distribution: Topics by E-print Network

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

    12: 488-501 I N T R O DU C T I O N The species abundance distribution (SAD Enquist, Brian Joseph 4 Fauna, Distribution, Habitat Preference and Abundance CiteSeer Summary:...

  4. abundance distribution composition: Topics by E-print Network

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

    12: 488-501 I N T R O DU C T I O N The species abundance distribution (SAD Enquist, Brian Joseph 6 Fauna, Distribution, Habitat Preference and Abundance CiteSeer Summary:...

  5. abundance distribution results: Topics by E-print Network

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

    12: 488-501 I N T R O DU C T I O N The species abundance distribution (SAD Enquist, Brian Joseph 4 Fauna, Distribution, Habitat Preference and Abundance CiteSeer Summary:...

  6. Service quality planning for freight distribution with time windows in large networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    as a quality factor of the service, since its nature and configuration also affects the total transportation1 Service quality planning for freight distribution with time windows in large networks Francesco introduces a methodology whose aim is to evaluate how the quality of a freight distribution service with time

  7. Poster Abstract: Energy-Efficient Distributed Support Vector Machines for Wireless Sensor Networks

    E-Print Network [OSTI]

    Tsakalides, Panagiotis

    Poster Abstract: Energy-Efficient Distributed Support Vector Machines for Wireless Sensor Networks of interest. In this paper, we present two energy-efficient algorithms to perform distributed incremental centralized SVM training methods, while being much more efficient in terms of energy cost. 1. INTRODUCTION One

  8. Hybrid Control Network Intrusion Detection Systems for Automated Power Distribution Systems

    E-Print Network [OSTI]

    Peisert, Sean

    ) for protecting automated distribution systems (ADS) against certain types of cyber attacks in a new way, distribution au- tomation, network security, intrusion detection systems. I. INTRODUCTION A. Scope and Goals their development with that of an appropriate cyber security frame- work that would prevent attackers from gaining

  9. Voltage Oscillations in Power Distribution Networks in the Presence of DFIGs and Induction Motor Loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Voltage Oscillations in Power Distribution Networks in the Presence of DFIGs and Induction Motor of oscillation between the electromechanical and subsynchronous oscillations of power systems. Time for the types of oscillations that occur in distribution systems. Finally, significant parameters of the system

  10. CONSENSUS-BASED K-MEANS ALGORITHM FOR DISTRIBUTED LEARNING USING WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Pleite, Alfonso Cano

    CONSENSUS-BASED K-MEANS ALGORITHM FOR DISTRIBUTED LEARNING USING WIRELESS SENSOR NETWORKS Pedro A centralized clustering ap- proaches impractical. This paper develops two decentralized k-means algorithms that distributed k- means are less sensitive to initialization than their centralized counterparts resulting

  11. A Technology for Electronic Energy Meters Intelligent Accounting Using Distributed Database over TCP/IP Network

    E-Print Network [OSTI]

    Borissova, Daniela

    4 8 A Technology for Electronic Energy Meters Intelligent Accounting Using Distributed Database in their entirety. 2. Electronic energy metersaccountingtechnology developed inthe project The technology under Collection Electronic Energy Meters Distributed Database over TCP/IP Network Optical Head Optical Port RS-232

  12. Price Discovery in Dynamic Power Markets with Low-Voltage Distribution-Network Participants

    E-Print Network [OSTI]

    Caramanis, Michael

    -distribution network locational marginal prices; power flow; reactive power compensation; voltage control; distributed application to Electric Power [2, 3] dynamic Locational-Marginal-Price (LMP) based Wholesale Power Markets to clear markets and discover dynamic Locational Marginal Prices (LMPs) that promoted more efficient

  13. Reactive power management of distribution networks with wind generation for improving voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    -loadability Reactive power margin Wind turbine a b s t r a c t This paper proposes static and dynamic VAR planningReactive power management of distribution networks with wind generation for improving voltage February 2013 Available online Keywords: Composite load Distributed generation D-STATCOM Q

  14. Sun's Network File System (NFS) One of the first uses of distributed client/server computing was

    E-Print Network [OSTI]

    Sheridan, Jennifer

    34 Sun's Network File System (NFS) One of the first uses of distributed client/server computing of data across clients. Thus, if 1 #12;2 SUN'S NETWORK FILE SYSTEM (NFS) you access a file on one machine-DUSSEAU #12;SUN'S NETWORK FILE SYSTEM (NFS) 3 even; in the best such case, no network traffic need be gener

  15. Distributed Newton-type algorithms for network resource allocation

    E-Print Network [OSTI]

    Wei, Ermin

    2010-01-01T23:59:59.000Z

    Most of today's communication networks are large-scale and comprise of agents with local information and heterogeneous preferences, making centralized control and coordination impractical. This motivated much interest in ...

  16. Gas distribution, metal enrichment, and baryon fraction in Gaussian and non-Gaussian universes

    E-Print Network [OSTI]

    Umberto Maio

    2011-12-12T23:59:59.000Z

    We study the cosmological evolution of baryons in universes with and without primordial non-Gaussianities via (large scale) N-body/hydrodynamical simulations, including gas cooling, star formation, stellar evolution, chemical enrichment from both population III and population II regimes, and feedback effects. We find that large fnl values for non-Gaussianities can alter the gas probability distribution functions, the metal pollution history, the halo baryon, gas and stellar fractions, mostly at early times. More precisely: (i) non-Gaussianities lead to an earlier evolution of primordial gas, structures, and star formation; (ii) metal enrichment starts earlier (with respect to the Gaussian scenario) in non-Gaussian models with larger fnl; (iii) gas fractions within the haloes are not significantly affected by the different values of fnl, with deviations of ~1-10%; (iv) the stellar fraction is quite sensitive to non-Gaussianities at early times, with discrepancies reaching up to a factor of ~10 at very high z, and rapidly converging at low z; (v) the trends at low redshift are independent from fnl: they are mostly led by the ongoing baryonic evolution and by the feedback mechanisms, which determine a ~25%-30% discrepancy in the baryon fraction of galaxy groups/clusters with respect to the cosmic values; (vi) non-Gaussianity impacts on the cluster X-ray emission or on the SZ effect(s) are expected to be not very large and dominated by feedback mechanisms, whereas some effects on the 21-cm emission can be expected at early times; (vii) in order to address non-Gaussianities in the cosmological structure contest, high-redshift (z~10) investigations are required: first stars, galaxies, quasars, and GRBs may be potential cosmological probes of non-Gaussianities.

  17. Apparatus and method for data communication in an energy distribution network

    DOE Patents [OSTI]

    Hussain, Mohsin; LaPorte, Brock; Uebel, Udo; Zia, Aftab

    2014-07-08T23:59:59.000Z

    A system for communicating information on an energy distribution network is disclosed. In one embodiment, the system includes a local supervisor on a communication network, wherein the local supervisor can collect data from one or more energy generation/monitoring devices. The system also includes a command center on the communication network, wherein the command center can generate one or more commands for controlling the one or more energy generation devices. The local supervisor can periodically transmit a data signal indicative of the data to the command center via a first channel of the communication network at a first interval. The local supervisor can also periodically transmit a request for a command to the command center via a second channel of the communication network at a second interval shorter than the first interval. This channel configuration provides effective data communication without a significant increase in the use of network resources.

  18. Predicting Well Stimulation Results in a Gas Storage Field in the Absence of Reservoir Data, Using Neural Networks

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 31159 Predicting Well Stimulation Results in a Gas Storage Field in the Absence of Reservoir Data, Using Neural Networks Mohaghegh, S., West Virginia University, McVey, D., National Gas and Oil for presentation by an SPE Program Committee following review of date wells with the highest potential

  19. affects spatial distributions: Topics by E-print Network

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

    density of neighbors). The corresponding power-law fits allow us to determine the fractal dimensions of each association's spatial distribution, measure the stellar velocity...

  20. artery spatial distribution: Topics by E-print Network

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

    density of neighbors). The corresponding power-law fits allow us to determine the fractal dimensions of each association's spatial distribution, measure the stellar velocity...

  1. activity size distributions: Topics by E-print Network

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

    of nutrients increased Mazumder, Asit 33 A COMPOSITE SOURCE MODEL WITH FRACTAL SUBEVENT SIZE DISTRIBUTION Geosciences Websites Summary: A COMPOSITE SOURCE MODEL WITH FRACTAL...

  2. activity size distribution: Topics by E-print Network

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

    of nutrients increased Mazumder, Asit 33 A COMPOSITE SOURCE MODEL WITH FRACTAL SUBEVENT SIZE DISTRIBUTION Geosciences Websites Summary: A COMPOSITE SOURCE MODEL WITH FRACTAL...

  3. air distribution system: Topics by E-print Network

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

    by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

  4. air distribution effectiveness: Topics by E-print Network

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

    by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

  5. air distribution systems: Topics by E-print Network

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

    by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

  6. air distribution methods: Topics by E-print Network

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

    by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

  7. adaptive distributed control: Topics by E-print Network

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

    Smart Grid holds the promise of providing the autonomous intelligence of distributed generation and storage within the Smart Grid. KEYWORDS | Adaptive stochastic control (ASC...

  8. affect synaptic distribution: Topics by E-print Network

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

    pulse arrival at low rates have Richardson, Magnus 3 Factors affecting wild turkey distribution and numbers Texas A&M University - TxSpace Summary: FACTORS AFFECTING...

  9. approximate distributed dynamic: Topics by E-print Network

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

    2 The Relation between Approximation in Distribution and Shadowing in Molecular Dynamics Mathematics Websites Summary: analysis is to explain the apparent reliabil- ity of...

  10. anchovy larval distribution: Topics by E-print Network

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

    gradients K August 2009 Accepted 17 August 2009 Keywords: Gadus morhua Vertical distribution Temperature gradients Experimental columns Behavioural responses to gradients of...

  11. analysis distributed sources: Topics by E-print Network

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

    Xu; Hong Guo 2009-08-12 5 Depth discrimination of an acoustic source based on modal energy distribution - performance analysis MIT - DSpace Summary: A recently proposed method...

  12. auroral distribution implications: Topics by E-print Network

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

    These processes are important Adkins, Jess F. 23 UNIVERSITY OF CALIFORNIA, Surface Wind Speed Distributions: Implications for Climate and Wind Power Geosciences Websites Summary: ....

  13. adult altitudinal distribution: Topics by E-print Network

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

    V. Yanulevskaya; J. -m. Geusebroek; J. B. Marsman; F. Cornelissen 52 Distributed DBMS Introduction Computer Technologies and Information Sciences Websites Summary:...

  14. autoregressive distributed lag: Topics by E-print Network

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

    the Gunnison sage-grouse in southwestern Colorado, USA: species distribution models using maximum entropy modelling and autoregression Edinburgh, University of - Research Archive...

  15. Model documentation: Natural Gas Transmission and Distribution Model of the National Energy Modeling System; Volume 1

    SciTech Connect (OSTI)

    NONE

    1994-02-24T23:59:59.000Z

    The Natural Gas Transmission and Distribution Model (NGTDM) is a component of the National Energy Modeling System (NEMS) used to represent the domestic natural gas transmission and distribution system. NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the Energy Information Administration (EIA) and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. This report documents the archived version of NGTDM that was used to produce the natural gas forecasts used in support of the Annual Energy Outlook 1994, DOE/EIA-0383(94). The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic design, provides detail on the methodology employed, and describes the model inputs, outputs, and key assumptions. It is intended to fulfill the legal obligation of the EIA to provide adequate documentation in support of its models (Public Law 94-385, Section 57.b.2). This report represents Volume 1 of a two-volume set. (Volume 2 will report on model performance, detailing convergence criteria and properties, results of sensitivity testing, comparison of model outputs with the literature and/or other model results, and major unresolved issues.) Subsequent chapters of this report provide: (1) an overview of the NGTDM (Chapter 2); (2) a description of the interface between the National Energy Modeling System (NEMS) and the NGTDM (Chapter 3); (3) an overview of the solution methodology of the NGTDM (Chapter 4); (4) the solution methodology for the Annual Flow Module (Chapter 5); (5) the solution methodology for the Distributor Tariff Module (Chapter 6); (6) the solution methodology for the Capacity Expansion Module (Chapter 7); (7) the solution methodology for the Pipeline Tariff Module (Chapter 8); and (8) a description of model assumptions, inputs, and outputs (Chapter 9).

  16. atom energy distributions: Topics by E-print Network

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

    atom energy distributions First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Energy distribution and...

  17. DIFS: A Distributed Index for Features in Sensor Networks

    E-Print Network [OSTI]

    Gao, Jie

    . The primary energy consumer in such systems is radio transmission. For one scenario, Pottie and Kaiser explain for complete flexibility in processing the data, it incurs signifi- cant energy expenditure to send every, in energy-constrained sensor networks it may be necessary to store data locally at or near the location

  18. Distributed Mobility Transparent Broadcast in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Sikdar, Biplab

    and highly adaptive to node mobility. It does not demand any neighborhood information and incurs little£ciency and alleviated interference; on the other hand, the proposed protocol achieves network energy balance by randomly- mum Connected Dominating Set (MCDS) should be elected as relay nodes, and identifying the MCDS

  19. Distributed Interference Compensation for Multi-channel Wireless Networks

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    to maximize its net benefit (utility minus cost), subject to a total power constraint. We consider two to the unique globally optimal power allocation for a class of concave user utility functions. When the utility power across users and channels to maximize total network utility is This work was supported

  20. Resilience-Based design of Natural Gas Pipelines G. P. Cimellaro, O. Villa

    E-Print Network [OSTI]

    Bruneau, Michel

    Resilience-Based design of Natural Gas Pipelines G. P. Cimellaro, O. Villa Department of Structural systems. No models are available in literature to measure the performance of natural gas network of natural or manmade hazard which might lead to the disruption of the system. The gas distribution network

  1. Loss Reduction of Power Distribution Network Using Optimum Size and Location of Distributed

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Generation Adnan Anwar, Student Member, IEEE, and H. R. Pota, Member, IEEE Abstract--Distributed generation be reduced significantly. Index Terms--Distributed generation, Optimum size, Optimum location, Power loss directly to utility distribution system. The insulation level of the machines may not synchronize

  2. Distributed Scalable Network Association in Wireless Sensor Networks Hyung-Sin Kim, Jin-Seok Han, Jae-Seok Bang, and Yong-Hwan Lee

    E-Print Network [OSTI]

    Bahk, Saewoong

    @snu.ac.kr Abstract--Wireless sensor networks (WSNs) need to employ a network association mechanism that can securely centralized and broadcasting based network association mechanisms may consume large energy, and distributed of the proposed scheme is evaluated by computer simulation, showing remarkable performance improvement over

  3. angular distribution tables: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 2 Angular...

  4. avalanche distributions recorded: Topics by E-print Network

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

    is built as a C++ library on top of our previously Newton, Ryan R. 5 Avalanche-driven fractal flux distributions in NbN superconducting films I. A. Rudnev Materials Science...

  5. angular distribution optical: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 4 Angular...

  6. angular distributions comparisons: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 2 Angular...

  7. angular intensity distribution: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 5 Angular...

  8. angular distribution charged: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 4 Final...

  9. angular distributions produced: Topics by E-print Network

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

    other and the angular distribution of galaxies is quite naturally compatible with a fractal structure with D approx 2. M. Montuori; F. Sylos-Labini 1997-06-30 6 Angular...

  10. angular distribution measurements: Topics by E-print Network

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

    Compositeness HEP - Experiment (arXiv) Summary: We have measured the dijet angular distribution in sqrts1.8 TeV pbarp collisions using the D0 detector. Order ...

  11. asymmetric mass distribution: Topics by E-print Network

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

    secondary masses M2 for the 67 exoplanets and very low-mass brown dwarf companions of solar-type stars, known as of April 4, 2001. This distribution is related to the...

  12. Study of distributed Fair Scheduling in wireless local area networks 

    E-Print Network [OSTI]

    Gupta, Seema

    2000-01-01T23:59:59.000Z

    A Fair Scheduling policy is required to support differentiated QoS requirements of contending flows in a wireless channel. This thesis presents a study of the Distributed Fair Scheduling (DFS) algorithm proposed for wireless ...

  13. Distributed Problem Solving in Geometrically-Structured Constraint Networks

    E-Print Network [OSTI]

    Mailler, Roger

    ) Roger Mailler University of Tulsa 800 South Tucker Dr Tulsa, Oklahoma mailler@utulsa.edu Huimin Zheng University of Tulsa 800 South Tucker Dr Tulsa, Oklahoma huimin-zheng@utulsa.com ABSTRACT Distributed

  14. An investigation of rainfall distribution within a mesoscale network in the middle Brazos River area

    E-Print Network [OSTI]

    Bell, Carroll Wilson

    1966-01-01T23:59:59.000Z

    AN INVESTIGATION OF RAINFALL DISTRIBUTION WITHIN A MESOSCALE NETWORK IN THE MIDDLE BRAZOS RIVER AREA A Thesis By CARROLL W. BELL Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1966 Ma]or Subject: METEOROLOGY AN INVESTIGATION OF RAINFALL DISTRIBUTION WITHIN A MESOSCALE NETWORK IN THE MIDDLE BRAZOS RIVER AREA A Thesis By CARROLL W. BELL Approved as to style and content by: C airman o...

  15. Delay Distribution Analysis of Wireless Personal Area Networks Pangun Park1, Piergiuseppe Di Marco2, Carlo Fischione2 and Karl Henrik Johansson2

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Delay Distribution Analysis of Wireless Personal Area Networks Pangun Park1, Piergiuseppe Di Marco2, Carlo Fischione2 and Karl Henrik Johansson2 Abstract-- Characterizing the network delay distribution of the probability distribution of the network delay. The probability distribution of the delay is a function

  16. Progress in the Neural Network Determination of Polarized Parton Distributions

    E-Print Network [OSTI]

    J. Rojo; G. Ridolfi; R. D. Ball; V. Bertone; F. Cerutti; L. Del Debbio; S. Forte; A. Guffanti; J. I. Latorre; M. Ubiali

    2010-07-02T23:59:59.000Z

    We review recent progress towards a determination of a set of polarized parton distributions from a global set of deep-inelastic scattering data based on the NNPDF methodology, in analogy with the unpolarized case. This method is designed to provide a faithful and statistically sound representation of parton distributions and their uncertainties. We show how the FastKernel method provides a fast and accurate method for solving the polarized DGLAP equations. We discuss the polarized PDF parametrizations and the physical constraints which can be imposed. Preliminary results suggest that the uncertainty on polarized PDFs, most notably the gluon, has been underestimated in previous studies.

  17. Case Study of Optimal Byproduct Gas Distribution in Integrated Steel Mill Using Multi-Period Optimization

    E-Print Network [OSTI]

    Makinen, K.; Kymalainen, T.; Junttila, J.

    2012-01-01T23:59:59.000Z

    byproduct gases at varying rates. The differences between gas generation and consumption rates are compensated with gas holders. However, under certain circumstances the imbalances can lead to the flaring of excessive gas or require the purchase...

  18. Measurement of gas density and temperature distributions in strongly rotating UF/sub 6/ using laser-induced fluorescence

    SciTech Connect (OSTI)

    Gentry, R.A.; Caldwell, S.E.; White, R.W.

    1981-01-01T23:59:59.000Z

    A new technique for using Laser Induced Fluorescence (LIF) signals to measure the distribution of gas density and temperature in strongly rotating UF/sub 6/ gas is presented. An external pulsed laser is used to excite the rotating UF/sub 6/ gas, producing an exponentially decaying fluorescence signal. A multi-channel fiber optics system simultaneously collects the fluorescence signals emanating from a number of points in the gas. The signals from each optical channel are digitized and processed to determine the fluorescence signal intensity and decay lifetime at each of the points of observation by means of a least squares fitting process. Gas densities and temperatures are then determined from the intensity and lifetime data. A recently constructed LIF probe system is described and an analysis of the unfolding techniques necessary to process the signal data is presented. Preliminary data, obtained in tests of the probe system in a laboratory rotor, are presented.

  19. automated energy distribution: Topics by E-print Network

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

    automated energy distribution First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Automated Energy...

  20. activation energy distribution: Topics by E-print Network

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

    activation energy distribution First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Photoelectron energy...

  1. Exact Distributed Voronoi Cell Computation in Sensor Networks

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Structures]: Distributed data structures--Voro- noi diagrams; H.4.3 [Information Systems Applications- aries and Voronoi neighbors is also useful in load balanc- ing and energy conservation. The methods- search Centers Program of the National Science Foundation under NSF Cooperative Agreement No. EEC-0313747

  2. Update on Neural Network Parton Distributions: NNPDF1.1

    E-Print Network [OSTI]

    NNPDF Collaboration; Juan Rojo; Richard D. Ball; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Jose I. Latorre; Andrea Piccione; Maria Ubiali

    2008-11-14T23:59:59.000Z

    We present recent progress within the NNPDF parton analysis framework. After a brief review of the results from the DIS NNPDF analysis, NNPDF1.0, we discuss results from an updated analysis with independent parametrizations for the strange and anti-strange distributions, denoted by NNPDF1.1. We examine the phenomenological implications of this improved analysis for the strange PDFs.

  3. absorption tissue distribution: Topics by E-print Network

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

    absorption tissue distribution First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Absorption and...

  4. absorption distribution excretion: Topics by E-print Network

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

    absorption distribution excretion First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 SMOKELESS TOBACCO 251...

  5. DISTRIBUTED KALMAN FILTERS IN SENSOR NETWORKS: BIPARTITE FUSION GRAPHS Usman A. Khan and Jose M. F. Moura

    E-Print Network [OSTI]

    Moura, José

    DISTRIBUTED KALMAN FILTERS IN SENSOR NETWORKS: BIPARTITE FUSION GRAPHS Usman A. Khan and Jos´e M. F {ukhan, moura}@ece.cmu.edu ABSTRACT We study the distributed Kalman filter in sensor networks where into reduced coupled sensor-based models. We implement local Kalman filters on these reduced models

  6. Load forecasting for active distribution networks Simone Paoletti, Member, IEEE, Marco Casini, Member, IEEE, Antonio Giannitrapani, Member, IEEE,

    E-Print Network [OSTI]

    Giannitrapani, Antonello

    opportunity for solving network constraints and supporting the development of renewable energy sources through- creased accessibility of renewable energy resources to end users have triggered new concepts Distribution network with full integration of Demand and distributed energy RESourceS and its target

  7. The effect of initial gas content and distribution on the residual gas content of cores after waterflooding

    E-Print Network [OSTI]

    Elliott, James Kelly

    1953-01-01T23:59:59.000Z

    by the residual gas saturation. Two sandstone cores were used in this work, one with 195 md. and one with 750 md. permeability. Tests were conducted at 1, 000 psi and the well known conductivity method of determining saturation was used. A Penn State relative... be assumed from these tests that water flooding of gas sands also yields maximum recovery. I Wyckoff and Botset conducted the first intensive research on two- phase flow of gas-liquid mixtures. It was from these experiments that the generalized relative...

  8. Model for energy efficiency in radio over fiber distributed indoor antenna Wi-Fi network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Model for energy efficiency in radio over fiber distributed indoor antenna Wi-Fi network Yves Josse communications in indoor environments. In this paper, the power consumption and energy efficiency of a DAS using for different transmission configurations, yielding a distance- dependent energy efficiency model. In a second

  9. Distributed Power Network Co-Design with On-Chip Power Supplies and Decoupling Capacitors

    E-Print Network [OSTI]

    Friedman, Eby G.

    Distributed Power Network Co-Design with On-Chip Power Supplies and Decoupling Capacitors Selc¸uk K, New York 14627 {kose,friedman}@ece.rochester.edu Abstract-- With each technology generation, the power computationally complex. The rising number of on-chip power supplies and intentional decoupling capacitors

  10. Towards Building an Optimal Demand Response Framework for DC Distribution Networks

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    . There- fore, in this paper, the first steps are taken towards designing de- mand response programs, such as photovoltaic (PV) systems, batteries, and fuel cells, that are natively DC sources. H. MohsenianTowards Building an Optimal Demand Response Framework for DC Distribution Networks Hamed Mohsenian

  11. Weak Data Secrecy via Obfuscation in Network Coding Based Content Distribution

    E-Print Network [OSTI]

    Battiti, Roberto

    Weak Data Secrecy via Obfuscation in Network Coding Based Content Distribution Roberto G. Cascella of California Los Angeles, 3732F Boelter Hall, CA 90095 Los Angeles Email: {cascella, crispo, battiti in terms of error/loss protection and faster dissemination at the cost of exposing the data to intermediate

  12. Slow Admission and Power Control for Small Cell Networks via Distributed Optimization

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Slow Admission and Power Control for Small Cell Networks via Distributed Optimization Siew Eng Nai on a large-scale basis. In recent work, we developed the joint admission and power control algorithm for two of the joint admission and power control problem where the small cells can determine jointly

  13. Distributed Optimal Self-Organisation in a Class of Wireless Sensor Networks

    E-Print Network [OSTI]

    Kumar, Anurag

    attempt rate. We consider a simple random access model for sensor networks and formulate these problems as optimisation problems. We then present centralized as well as distributed algorithms for solving them. Results approach will also be energy efficient as compared to mere data dissemination since it will avoid energy

  14. Distributed Detection of Cyber-Physical Attacks in Power Networks: A Waveform Relaxation Approach

    E-Print Network [OSTI]

    Bullo, Francesco

    Distributed Detection of Cyber-Physical Attacks in Power Networks: A Waveform Relaxation Approach to operate safely and reliably against cyber-physical attacks. The large dimensionality and the difficulty system and cyber- physical attacks as unknown inputs. This modeling framework captures, for instance

  15. Symbiotic Intelligence: SelfOrganizing Knowledge on Distributed Networks Driven by Human Interaction

    E-Print Network [OSTI]

    Menczer, Filippo

    a , and Marianna Kantor a . a Los Alamos National Laboratory, Los Alamos, New Mexico, 87545 b Santa Fe InstituteSymbiotic Intelligence: Self­Organizing Knowledge on Distributed Networks Driven by Human, 1399 Hyde Park Road, Santa Fe, New Mexico, 87501 Abstract Through conceptual examples

  16. Damage detection on a full-scale highway sign structure with a distributed wireless sensor network

    E-Print Network [OSTI]

    Lu, Chenyang

    Damage detection on a full-scale highway sign structure with a distributed wireless sensor network highway sign support structure to investigate the ability to use vibration response data to detect damage induced in the structure. A multi-level damage detection strategy is employed for this structure

  17. Designing P2P Networks Tolerant to Attacks and Faults Based on Bimodal Degree Distribution

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    , which have a power-law degree distribution, are vulnerable to attacks such as DOS. To address Sciences, Tohoku University, Japan. 2 Department of Electrical and Computer Engineering, University are intolerant of (i.e., not resilient to) network-failures due to the lack of a centralized infrastructure

  18. Voltage Stability and Frequency Synchronization of Weak Power Distribution Networks with Inverter-Based

    E-Print Network [OSTI]

    Lemmon, Michael

    a part of microgrids, are incorporated to improve power quality and reliability when disruptions happen of microgrids [13], together with oth- er generation, storage and load units. These microgrid- s are installedVoltage Stability and Frequency Synchronization of Weak Power Distribution Networks with Inverter

  19. Outage Detection in Power Distribution Networks with Optimally-Deployed Power Flow Sensors

    E-Print Network [OSTI]

    Zhao, Yue

    Outage Detection in Power Distribution Networks with Optimally-Deployed Power Flow Sensors Yue Zhao deployed real-time power flow sensors and that of load estimates via Advanced Metering Infrastructure (AMI of Naval Research, under Grant N00014-12-1-0767. where supervisory control and data acquisition (SCADA

  20. Small-Signal Stability Assessment of Active Distribution Networks with Dynamic Loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    the flow of power and the voltage profiles of the system and these profiles are different for different types of loads [3]. In addition to the power flow at and around N. K. Roy, H. R. Pota, and T. F. OrchiSmall-Signal Stability Assessment of Active Distribution Networks with Dynamic Loads N. K. Roy

  1. Performance and Fiscal Analysis of Distributed Sensor Networks in a Power Plant

    E-Print Network [OSTI]

    Tumer, Kagan

    Performance and Fiscal Analysis of Distributed Sensor Networks in a Power Plant Mitchell Colby University 204 Rogers Hall Corvallis, OR 97331 kagan.tumer@oregonstate.edu ABSTRACT As power plants become power plant, showing that system parameters may be accurately measured and tracked more effectively than

  2. LandScape Command Set: Local Area Network Distributed Supervisory Control and Programming Environment

    SciTech Connect (OSTI)

    Burchard, R.L.; Small, D.E.

    1999-01-01T23:59:59.000Z

    This paper presents the Local Area Network Distributed Supervisory Control and Programming Environment (LandScape) commands set that provides a Generic Device Subsystem Application Programmers Interface (API). These commands are implemented using the Common Object Request Broker Architecture (CORBA) specification with Orbix from Iona Technologies.

  3. Lyapunov functions, stationary distributions, and non-equilibrium potential for chemical reaction networks

    E-Print Network [OSTI]

    Lyapunov functions, stationary distributions, and non-equilibrium potential for chemical reaction reac- tion systems and Lyapunov functions for their deterministic counterparts. Specifically, we derive the well known Lyapunov function of chemical reaction network theory as a scaling limit of the non

  4. OPF evaluation of distribution network capacity for the connection of distributed generation

    E-Print Network [OSTI]

    Harrison, Gareth

    threaten the achievement of renewable energy targets. One means of addressing this risk is to encourage the network. #12;3 1. Introduction The European Union Renewables Directive and national incentives such as the UK Renewables Obligations [1]-[2] are encouraging the development of renewable energy resources

  5. Sensor-network-based robust distributed control and estimation P. Milln a,n,1

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    control strategies typically rely on the assumption of centrality: the information collected about, such as traffic systems, water delivery channels, oil/gas pipelines, electrical power grids water, manufacturing these cases the centrality assumption no longer holds, and a decentralized or distributed strategy is often

  6. Distributed Power Control and Coding-Modulation Adaptation in Wireless Networks using Annealed Gibbs Sampling

    E-Print Network [OSTI]

    Zhou, Shan; Ying, Lei

    2011-01-01T23:59:59.000Z

    In wireless networks, the transmission rate of a link is determined by received signal strength, interference from simultaneous transmissions, and available coding-modulation schemes. Rate allocation is a key problem in wireless network design, but a very challenging problem because: (i) wireless interference is global, i.e., a transmission interferes all other simultaneous transmissions, and (ii) the rate-power relation is non-convex and non-continuous, where the discontinuity is due to limited number of coding-modulation choices in practical systems. In this paper, we propose a distributed power control and coding-modulation adaptation algorithm using annealed Gibbs sampling, which achieves throughput optimality in an arbitrary network topology. We consider a realistic Signal-to-Interference-and-Noise-Ratio (SINR) based interference model, and assume continuous power space and finite rate options (coding-modulation choices). Our algorithm first decomposes network-wide interference to local interference by p...

  7. DIAGNOSING VULNERABILITY, EMERGENT PHENOMENA, and VOLATILITY in MANMADE NETWORKS

    E-Print Network [OSTI]

    Arrowsmith, David

    : oil pipeline capacity ­ thickness of link #12;6 Local topology: GIS vs Map definition Swiss Laufenburg Tealing #12;8 Interconnected Networks - overlaying GIS gas and electricity networks #12;9 Network Cumulative frequency distribution The tail of the cumulative frequency distribution provides information

  8. Distributed delay model for density wave dynamics in gas lifted wells Laure Sin`egre, Nicolas Petit

    E-Print Network [OSTI]

    Distributed delay model for density wave dynamics in gas lifted wells Laure Sin`egre, Nicolas Petit in the tubing D. dynamical choking is used to stabilise the density wave instability. In this paper, we propose instabilities cause production losses. One of these instabilities, referred to as the "density-wave

  9. Distributed Control of the Laplacian Spectral Moments of a Network Victor M. Preciado, Michael M. Zavlanos, Ali Jadbabaie, and George J. Pappas

    E-Print Network [OSTI]

    Zavlanos, Michael

    Distributed Control of the Laplacian Spectral Moments of a Network Victor M. Preciado, Michael M algorithms to distributively compute the spectral moments of the Laplacian matrix, as well as ensure network distributed fash- ion while maintaining network connectivity in the presence of link deletions. Our work

  10. Proceedings of the 4th International Workshop on Policies for Distributed Systems and Networks (POLICY'03) 0-7695-1933-4/03 $17.00 2003 IEEE

    E-Print Network [OSTI]

    Perry, Mark

    Proceedings of the 4th International Workshop on Policies for Distributed Systems and Networks on Policies for Distributed Systems and Networks (POLICY'03) 0-7695-1933-4/03 $17.00 © 2003 IEEE #12;Proceedings of the 4th International Workshop on Policies for Distributed Systems and Networks (POLICY'03) 0

  11. Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    of distributed energy sources such as, combined heat and power (CHP), wind, solar, and fuel cells, are expected and IT, The University of New South Wales, Canberra, ACT 2600, Australia b Future Grid Research Centre, The University of Melbourne, Parkville, VIC 3010, Australia c Griffith School of Engineering, Griffith University

  12. Terr. Atmos. Ocean. Sci., Vol. 17, No. 4, 615-644, December 2006 Distribution and Characters of Gas Hydrate Offshore of

    E-Print Network [OSTI]

    Lin, Andrew Tien-Shun

    of Gas Hydrate Offshore of Southwestern Taiwan Char-Shine Liu 1, *, Philippe Schnürle 1 , Yunshuen Wang 2 reflector (BSR) is a key indicator for the presence of gas hydrate beneath the sea floor. Widely distributed% of the seismic profiles that we collected. A newly compiled BSR distri- bution map suggests that gas hydrates

  13. Abstract--The detection of single line-to-ground (SLG) fault in compensated distribution networks can be hampered by

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    on particular regime where data is acquired. In transient regime the relays diagnosis based on analysis, power distribution protection, compensated distribution system I. INTRODUCTION N case of low ohmic SLG faults in compensated distribution networks the directional function can be assured by transient relays

  14. Network Economics Anna Nagurney

    E-Print Network [OSTI]

    Nagurney, Anna

    Performance/Efficiency Measure with Applications to a Variety of Network Systems · Transportation Network with transportation as the unifying application. #12;Subway Network Railroad Network Iridium Satellite Constellation Network Satellite and Undersea Cable Networks Duke Energy Gas Pipeline Network Transportation

  15. Applications of radon distribution and radon flux for the determination of oceanic mixing and air-sea gas exchange

    E-Print Network [OSTI]

    Brewer, Robert Lewis

    1977-01-01T23:59:59.000Z

    APPLICATIONS OF RADON DISTRIBUTION AND RADON FLUX FOR THE DETERS 1INATION Ol OCEANIC IvfIXING AND AIR -SEA GAS EXCHA NGE A Thesis by ROBERT I. EWIS BREWER Submitted to the Graduate College oi T e xa s A '4 I'. 1 Univ c r s i ty in partial... luiiillment of the requirement for the degree of KIASTER OF SCIENCE May 1977 Major Subject: Oceanography APPLICATIONS OF RADON DIS TBIBUTION AND RADON FLUX FOR THE DETERMINATION OF OCEANIC MIXING A ND AIR ? SEA GAS EXCIdA NGE A Thesis by ROBERT LEWIS...

  16. An efficient algorithm for real-time network reconfiguration in large scale unbalanced distribution systems

    SciTech Connect (OSTI)

    Wang, J.C.; Chiang, H.D. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering; Darling, G.R. [NYSEG Corp., Binghamton, NY (United States). Distribution System Dept.

    1996-02-01T23:59:59.000Z

    Real-time applications demand fast computation, this paper proposes an efficient algorithm for real-time network reconfiguration on large unbalanced distribution networks. A novel formulation of the network reconfiguration to achieve loss minimization and load balancing is given. To reduce computational requirements for the solution algorithm, well justified power flow and loss reduction formulas in terms of the on/off status of network switches are proposed for efficient system updating. The algorithm relies only on a few full power flow studies based on system states attained by explicit expressions using backward-forward sweeps for efficient computation of system`s states at the critical system operating points. The solution algorithm runs in an amount of time linearly proportional to the number of tie switches and the number of sectionalizing switches in the system. The solution algorithm has been implemented into a software package and tested on unbalanced distribution systems including a system with 292-buses, 76-laterals, 7 transformers, 45 switches and 255 lines sections under diverse system conditions.

  17. An efficient algorithm for real-time network reconfiguration in large scale unbalanced distribution systems

    SciTech Connect (OSTI)

    Wang, J.C.; Chiang, H.D. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering; Darling, G.R. [NYSEG Corp., Binghamton, NY (United States). Distribution System Dept.

    1995-12-31T23:59:59.000Z

    Real-time applications demand fast computation, this paper proposes an efficient algorithm for real-time network reconfiguration on large unbalanced distribution networks. A novel formulation of the network reconfiguration to achieve loss minimization and load balancing is given. To reduce computational requirements for the solution algorithm, well justified power flow and loss reduction formulas in terms of the on/off status of network switches are proposed for efficient system updating. The algorithm relies only a few full power flow studies based on system states attained by explicit expressions using backward-forward sweeps for efficient computation of system`s states at the critical system operating points. The solution algorithm runs in an amount of time linearly proportional to the number of tie switches and the number of sectionalizing switches in the system. The solution algorithm has been implemented into a software package and tested on unbalanced distribution systems including a system with 292-buses, 76-laterals, 7 transformers, 45 switches and 255 lines sections under diverse system conditions.

  18. DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT

    E-Print Network [OSTI]

    Foss, Bjarne A.

    DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT PLATFORM Michael R to distributed optimization and control of offshore oil production systems. The model incorporates a complex pipeline network. Oil and gas production systems are represented as a network of connected hierarchical

  19. Wireless Self-powered Visual and NDE Robotic Inspection System for Live Gas Distribution Mains

    SciTech Connect (OSTI)

    Susan Burkett; Hagen Schempf

    2006-01-31T23:59:59.000Z

    Carnegie Mellon University (CMU) under contract from Department of Energy/National Energy Technology Laboratory (DoE/NETL) and co-funding from the Northeast Gas Association (NGA), has completed the overall system design of the next-generation Explorer-II (X-II) live gas main NDE and visual inspection robot platform. The design is based on the Explorer-I prototype which was built and field-tested under a prior (also DoE- and NGA co-funded) program, and served as the validation that self-powered robots under wireless control could access and navigate live natural gas distribution mains. The X-II system design ({approx}8 ft. and 66 lbs.) was heavily based on the X-I design, yet was substantially expanded to allow the addition of NDE sensor systems (while retaining its visual inspection capability), making it a modular system, and expanding its ability to operate at pressures up to 750 psig (high-pressure and unpiggable steel-pipe distribution mains). A new electronics architecture and on-board software kernel were added to again improve system performance. A locating sonde system was integrated to allow for absolute position-referencing during inspection (coupled with external differential GPS) and emergency-locating. The power system was upgraded to utilize lithium-based battery-cells for an increase in mission-time. The system architecture now relies on a dual set of end camera-modules to house the 32-bit processors (Single-Board Computer or SBC) as well as the imaging and wireless (off-board) and CAN-based (on-board) communication hardware and software systems (as well as the sonde-coil and -electronics). The drive-module (2 ea.) are still responsible for bracing (and centering) to drive in push/pull fashion the robot train into and through the pipes and obstacles. The steering modules and their arrangement, still allow the robot to configure itself to perform any-angle (up to 90 deg) turns in any orientation (incl. vertical), and enable the live launching and recovery of the system using custom fittings and a (to be developed) launch-chamber/-tube. The battery modules are used to power the system, by providing power to the robot's bus. The support modules perform the functions of centration for the rest of the train as well as odometry pickups using incremental encoding schemes. The electronics architecture is based on a distributed (8-bit) microprocessor architecture (at least 1 in ea. module) communicating to a (one of two) 32-bit SBC, which manages all video-processing, posture and motion control as well as CAN and wireless communications. The operator controls the entire system from an off-board (laptop) controller, which is in constant wireless communication with the robot train in the pipe. The sensor modules collect data and forward it to the robot operator computer (via the CAN-wireless communications chain), who then transfers it to a dedicated NDE data-storage and post-processing computer for further (real-time or off-line) analysis. CMU has fully designed every module in terms of the mechanical, electrical and software elements (architecture only). Substantial effort has gone into pre-prototyping to uncover mechanical, electrical and software issues for critical elements of the design. Design requirements for sensor-providers were also detailed and finalized and provided to them for inclusion in their designs. CMU is expecting to start 2006 with a detailed design effort for both mechanical and electrical components, followed by procurement and fabrication efforts in late winter/spring 2006. The assembly and integration efforts will occupy all of the spring and summer of 2006. Software development will also be a major effort in 2006, and will result in porting and debugging of code on the module- and train-levels in late summer and Fall of 2006. Final pipe mock-up testing is expected in late fall and early winter 2006 with an acceptance demonstration of the robot train (with a sensor-module mock-up) planned to DoE/NGA towards the end of 2006.

  20. Topic 3: Smart Grid Communications A.H. MohsenianRad (U of T) 1Networking and Distributed Systems

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    Aggregator PLC IP WMN ZigBee (Home Area Network) Substations Operation Sensors PLC IP/IEC #12;Smart GridTopic 3: Smart Grid Communications A.H. MohsenianRad (U of T) 1Networking and Distributed Systems Reference Model for Smart Grid Dr. Hamed Mohsenian-Rad Texas Tech UniversityCommunications and Control

  1. A Low-Cost, High-Efficiency Periodic Flow Gas Turbine for Distributed Energy Generation

    SciTech Connect (OSTI)

    Dr. Adam London

    2008-06-20T23:59:59.000Z

    The proposed effort served as a feasibility study for an innovative, low-cost periodic flow gas turbine capable of realizing efficiencies in the 39-48% range.

  2. Analyzing Natural Gas Based Hydrogen Infrastructure - Optimizing Transitions from Distributed to Centralized H2 Production

    E-Print Network [OSTI]

    Yang, Christopher; Ogden, Joan M

    2005-01-01T23:59:59.000Z

    for building up hydrogen infrastructure that are guided byModeling Regional Hydrogen Infrastructure Development . inNATURAL GAS BASED HYDROGEN INFRASTRUCTURE – OPTIMIZING

  3. Distributed Broadcast Scheduling in Mobile Ad Hoc Networks with Unknown Guang Tan, Stephen A. Jarvis, James W. J. Xue, and Simon D. Hammond

    E-Print Network [OSTI]

    Jarvis, Stephen

    Distributed Broadcast Scheduling in Mobile Ad Hoc Networks with Unknown Topologies Guang Tan. In this paper we study the distributed broadcast schedul- ing problem in ad hoc networks. In broadcasting is a fundamental communication task in mobile ad hoc networks, and minimizing broadcasting time (or latency

  4. Quantifying Fluid Distribution and Phase Connectivity with a Simple 3D Cubic Pore Network Model Constrained by NMR and MICP Data

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1 Quantifying Fluid Distribution and Phase Connectivity with a Simple 3D Cubic Pore Network Model; Nuclear Magnetic Resonance; Pore Network; Invasion Percolation; Fluid Distribution; Relative Permeability Constrained by NMR and MICP Data Chicheng Xu1 and Carlos Torres-Verdín2 Running Head: Pore Network Modeling

  5. air-sea gas exchange: Topics by E-print Network

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

    were Ho, David 49 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE COMBINED EFFECTS OF WIND AND RAIN ON THE GAS TRANSFER Geosciences Websites Summary: AIR-WATER GAS EXCHANGE:...

  6. A majorization-minimization approach to design of power distribution networks

    SciTech Connect (OSTI)

    Johnson, Jason K [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    We consider optimization approaches to design cost-effective electrical networks for power distribution. This involves a trade-off between minimizing the power loss due to resistive heating of the lines and minimizing the construction cost (modeled by a linear cost in the number of lines plus a linear cost on the conductance of each line). We begin with a convex optimization method based on the paper 'Minimizing Effective Resistance of a Graph' [Ghosh, Boyd & Saberi]. However, this does not address the Alternating Current (AC) realm and the combinatorial aspect of adding/removing lines of the network. Hence, we consider a non-convex continuation method that imposes a concave cost of the conductance of each line thereby favoring sparser solutions. By varying a parameter of this penalty we extrapolate from the convex problem (with non-sparse solutions) to the combinatorial problem (with sparse solutions). This is used as a heuristic to find good solutions (local minima) of the non-convex problem. To perform the necessary non-convex optimization steps, we use the majorization-minimization algorithm that performs a sequence of convex optimizations obtained by iteratively linearizing the concave part of the objective. A number of examples are presented which suggest that the overall method is a good heuristic for network design. We also consider how to obtain sparse networks that are still robust against failures of lines and/or generators.

  7. in Proceedings of the 1999 International Joint Conference on Neural Network (pp. 305i305vi) 305i When local isn't enough: Extracting distributed rules from networks

    E-Print Network [OSTI]

    Dawson, Michael

    When local isn't enough: Extracting distributed rules from networks David A. Medler Center nature of neural networks. In this paper we discuss a technique for ex- tracting distributed symbolicin Proceedings of the 1999 International Joint Conference on Neural Network (pp. 305i­305vi) 305i

  8. ar-rich source gas: Topics by E-print Network

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

    Websites Summary: > Natural Gas Utilities Options Analysis for the Hydrogen Economy Hydrogen Pipeline R&D Project and Collaborators > Team - Gas Technology Institute -...

  9. E-Print Network 3.0 - advanced flue gas Sample Search Results

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

    flue gas losses and minimized in... generated from flue gas condensation for district heating. Twence is another example, where a high degree... into a reusable ash and that...

  10. aggressive city greenhouse-gas: Topics by E-print Network

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

    (Natural Gas) (Scope 2) ... 17 2.9.5 Steam Consumption 28 Nuclear Power PROS -No' greenhouse gas emissions Geosciences Websites Summary: Nuclear Power PROS -No'...

  11. DECENTRALIZED CONTROL ARCHITECTURE FOR COUPLING MICROGRIDS INTO DISTRIBUTION NETWORKS 1 Task 1: Coupling Low-Voltage Microgrids into

    E-Print Network [OSTI]

    Lemmon, Michael

    DECENTRALIZED CONTROL ARCHITECTURE FOR COUPLING MICROGRIDS INTO DISTRIBUTION NETWORKS 1 Task 1: Coupling Low-Voltage Microgrids into Mid-Voltage Distribution Systems Zhao Wang, Student Member, IEEE-voltage (LV) microgrids. At the same time, reactive power is dispatched coordinatively so that voltage

  12. A Case Study of Organizational Effects in a Distributed Sensor Network Bryan Horling, Roger Mailler and Victor Lesser

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    A Case Study of Organizational Effects in a Distributed Sensor Network Bryan Horling, Roger the various effects that organizational characteristics have on the system's performance. We show how motivates the need for a better understanding of organizational effects. Introduction Distributed vehicle

  13. 1750 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 59, NO. 7, JULY 2014 Distributed Control of Networked Dynamical

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    to the inherent difficulties with distributed PI control, automatic fre- quency control of power systems1750 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 59, NO. 7, JULY 2014 Distributed Control-order networked dynamical systems. We propose a class of nonlinear consensus controllers where the input of each

  14. Using neural networks to estimate redshift distributions. An application to CFHTLenS

    E-Print Network [OSTI]

    Bonnett, Christopher

    2013-01-01T23:59:59.000Z

    We present a novel way of using neural networks (NN) to estimate the redshift distribution of a galaxy sample. We are able to obtain a probability density function (PDF) for each galaxy using a classification neural network. The method is applied to 58714 galaxies in CFHTLenS that have spectroscopic redshifts from DEEP2, VVDS and VIPERS. Using this data we show that the stacked PDF's give an excellent representation of the true $N(z)$ using information from 5, 4 or 3 photometric bands. We show that the fractional error due to using N(z_(phot)) instead of N(z_(truth)) is IPython notebook accompanying this paper is made available here: https://bitbucke...

  15. Case Study of Optimal Byproduct Gas Distribution in Integrated Steel Mill Using Multi-Period Optimization 

    E-Print Network [OSTI]

    Makinen, K.; Kymalainen, T.; Junttila, J.

    2012-01-01T23:59:59.000Z

    trade-off between gas holder level control, flare minimization, and optimization of electricity purchase versus internal power generation. The system reduces energy cost, improves energy efficiency, manages carbon footprint, and provides environmental...

  16. An evaluation of joint repair methods for cast iron natural gas distribution mains and the preliminary development of an alternative joint seal

    E-Print Network [OSTI]

    Rogers, Thomas Edward

    1984-01-01T23:59:59.000Z

    Approximately 10 percent of the natural gas pumped into distribution systems is unaccounted for. A significant portion of this amount is leakage from joints in 50 to 100 year old cast iron main. Because of the cumulative ...

  17. Privacy and Security Research Group workshop on network and distributed system security: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1993-05-01T23:59:59.000Z

    This report contains papers on the following topics: NREN Security Issues: Policies and Technologies; Layer Wars: Protect the Internet with Network Layer Security; Electronic Commission Management; Workflow 2000 - Electronic Document Authorization in Practice; Security Issues of a UNIX PEM Implementation; Implementing Privacy Enhanced Mail on VMS; Distributed Public Key Certificate Management; Protecting the Integrity of Privacy-enhanced Electronic Mail; Practical Authorization in Large Heterogeneous Distributed Systems; Security Issues in the Truffles File System; Issues surrounding the use of Cryptographic Algorithms and Smart Card Applications; Smart Card Augmentation of Kerberos; and An Overview of the Advanced Smart Card Access Control System. Selected papers were processed separately for inclusion in the Energy Science and Technology Database.

  18. Distributed Stochastic Power Control in Ad-hoc Networks: A Nonconvex Case

    E-Print Network [OSTI]

    Yang, Lei; Zhang, Junshan; Li, Jason H

    2011-01-01T23:59:59.000Z

    Utility-based power allocation in wireless ad-hoc networks is inherently nonconvex because of the global coupling induced by the co-channel interference. To tackle this challenge, we first show that the globally optimal point lies on the boundary of the feasible region, which is utilized as a basis to transform the utility maximization problem into an equivalent max-min problem with more structure. By using extended duality theory, penalty multipliers are introduced for penalizing the constraint violations, and the minimum weighted utility maximization problem is then decomposed into subproblems for individual users to devise a distributed stochastic power control algorithm, where each user stochastically adjusts its target utility to improve the total utility by simulated annealing. The proposed distributed power control algorithm can guarantee global optimality at the cost of slow convergence due to simulated annealing involved in the global optimization. The geometric cooling scheme and suitable penalty pa...

  19. Distributed embedded computing systems are special-purpose computer systems designed for particular applications and set up in a networked or distributed manner. A

    E-Print Network [OSTI]

    Bhattacharyya, Shuvra S.

    for such a distributed system setup is the domain of wireless sensor network (WSN) applications. In this thesis, studies-specific WSN system with compact size and low power features. This system design is the result of an integrated proposed design techniques. This thesis also presents a system-level synthesis methodology for finding

  20. Atlas of Northern Gulf of Mexico Gas and Oil Reservoirs: Procedures and examples of resource distribution

    SciTech Connect (OSTI)

    Seni, S.J.; Finley, R.J.

    1995-06-01T23:59:59.000Z

    The objective of the program is to produce a reservoir atlas series of the Gulf of Mexico that (1) classifies and groups offshore oil and gas reservoirs into a series of geologically defined reservoir plays, (2) compiles comprehensive reservoir play information that includes descriptive and quantitative summaries of play characteristics, cumulative production, reserves, original oil and gas in place, and various other engineering and geologic data, (3) provides detailed summaries of representative type reservoirs for each play, and (4) organizes computerized tables of reservoir engineering data into a geographic information system (GIS). The primary product of the program will be an oil and gas atlas series of the offshore Northern Gulf of Mexico and a computerized geographical information system of geologic and engineering data linked to reservoir location.

  1. Large Scale Distribution of Stochastic Control Algorithms for Gas Storage Constantinos Makassikis, Stephane Vialle

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by the gas market prices for a future delivery of energy: · the first one is a one-factor model based as people from the industry of energy and finance in order to provide concrete answers on the use power and memory space while achieving both speedup and size-up: it has been successfully implemented

  2. air-cooled gas turbine: Topics by E-print Network

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

    Alan) 2003-01-01 57 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  3. aero-derivative gas turbines: Topics by E-print Network

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

    Alan) 2003-01-01 54 Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine MIT - DSpace Summary: As part of the MIT micro-gas turbine engine...

  4. Strategic Planning, Design and Development of the Shale Gas Supply Chain Network

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    and fluids from the pure gas (methane) to produce what is known as "pipeline quality" dry natural gas.[2 in wells, providing raw materials for oil refineries or petrochemical plants, and as sources of energy.[3

  5. Distributional Implications of Alternative U.S. Greenhouse Gas Control Measures

    E-Print Network [OSTI]

    Rausch, Sebastian

    We analyze the distributional and efficiency impacts of different allowance allocation schemes for a national cap and trade system using the USREP model, a new recursive dynamic computable general equilibrium model of the ...

  6. Distributional Implications of Alternative U.S. Greenhouse Gas Control Measures

    E-Print Network [OSTI]

    Paltsev, Sergey

    We analyze the distributional and efficiency impacts of different allowance allocation schemes motivated by recently proposed U.S. climate legislation for a national cap and trade system using a new dynamic computable ...

  7. The temperature and distribution of gas in CL 0016+16 measured with XMM-Newton

    E-Print Network [OSTI]

    Birkinshaw, M

    2003-01-01T23:59:59.000Z

    We present results of a 37 ks observation of CL 0016+16 with the XMM-Newton EPIC instrument. Within 1.5 arcmin of the cluster centre we measure a gas temperature of kT = 9.13^{+0.24}_{-0.22} keV and an abundance of 0.22^{+0.04}_{-0.03} times the solar value (1 sigma uncertainties). This significant improvement over previous measurements has allowed us to revise the estimate of the Hubble constant based on CL 0016+16 to 68 +/- 8 km s^{-1} Mpc^{-1} (random error only), close to the value from the Hubble Space Telescope distance-scale project. The total gravitating mass within a radius of 248 kpc of the cluster centre is in good agreement with that found from gravitational lensing over the same region, supporting the assumption of isothermal gas in hydrostatic equilibrium. The gas mass fraction of 0.13 +/- 0.02 is in remarkable agreement with that given by cosmological parameters for the Universe as a whole, suggesting that CL 0016+16 is a fair sample of the matter content of the Universe. While there is no spec...

  8. Method and apparatus for distributed intrusion protection system for ultra high bandwidth networks

    DOE Patents [OSTI]

    Goranson, Craig A.; Burnette, John R.; Greitzer, Frank L.; McMillan, Bryan H.

    2013-10-15T23:59:59.000Z

    A method for providing security to a network having a data stream with a plurality of portions of data, each having differing levels of sensitivity. The data stream is interrogated to determine the presence of predetermined characteristics associated with at least one of the portions of data within the data stream. At least one of the portions of data is then characterized, based upon the portion of data exhibiting a predetermined combination of characteristics, wherein the predetermined combination of characteristics is related to the sensitivity of the portion of data. The portions of the data stream are then distributed into a plurality of different channels, each of the channels associated with different level of sensitivity.

  9. analysis-hydride generation-gas phase: Topics by E-print Network

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

    we derive the corresponding equilibrium distribution. This formulation leads us to the maximum entropy distribution that captures pair-wise phase relationships. To solve the...

  10. Idaho Natural Gas Pipeline and Distribution Use Price (Dollars per Thousand

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearperHOWYear-MonthExportsLease

  11. New Mexico Natural Gas Pipeline and Distribution Use (Million Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial Consumers (Number of Elements) New Mexico Natural Gas Number ofIndustrial

  12. New Mexico Natural Gas Pipeline and Distribution Use Price (Dollars per

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial Consumers (Number of Elements) New Mexico Natural Gas Number

  13. Consistent empirical physical formula construction for recoil energy distribution in HPGe detectors using artificial neural networks

    E-Print Network [OSTI]

    Serkan Akkoyun; Nihat Yildiz

    2012-07-23T23:59:59.000Z

    The gamma-ray tracking technique is one of the highly efficient detection method in experimental nuclear structure physics. On the basis of this method, two gamma-ray tracking arrays, AGATA in Europe and GRETA in the USA, are currently being developed. The interactions of neutrons in these detectors lead to an unwanted background in the gamma-ray spectra. Thus, the interaction points of neutrons in these detectors have to be determined in the gamma-ray tracking process in order to improve photo-peak efficiencies and peak-to-total ratios of the gamma-ray peaks. Therefore, the recoil energy distributions of germanium nuclei due to inelastic scatterings of 1-5 MeV neutrons were obtained both experimentally and using artificial neural networks. Also, for highly nonlinear detector response for recoiling germanium nuclei, we have constructed consistent empirical physical formulas (EPFs) by appropriate layered feed-forward neural networks (LFNNs). These LFNN-EPFs can be used to derive further physical functions which could be relevant to determination of neutron interactions in gamma-ray tracking process.

  14. Abnormal distribution of microhardness in tungsten inert gas arc butt-welded AZ61 magnesium alloy plates

    SciTech Connect (OSTI)

    Xu Nan [College of Material Science and Engineering, Chongqing University, Chongqing 400044 (China); Shen Jun, E-mail: shenjun2626@163.com [College of Material Science and Engineering, Chongqing University, Chongqing 400044 (China); Xie Weidong; Wang Linzhi; Wang Dan; Min Dong [College of Material Science and Engineering, Chongqing University, Chongqing 400044 (China)

    2010-07-15T23:59:59.000Z

    In this study, the effects of heat input on the distribution of microhardness of tungsten inert gas (TIG) arc welded hot-extruded AZ61 magnesium alloy joints were investigated. The results show that with an increase of heat input, the distributions of microhardness at the top and bottom of the welded joints are different because they are determined by both the effect of grain coarsening and the effect of dispersion strengthening. With an increase of the heat input, the microhardness of the heat-affected zone (HAZ) at the top and bottom of welded joints and the fusion zone (FZ) at the bottom of welded joints decreased gradually, while the microhardness of the FZ at the top of welded joints decreased initially and then increased sharply. The reason for the abnormal distribution of microhardness of the FZ at the top of the welded joints is that this area is close to the heat source during welding and then large numbers of hard {beta}-Mg{sub 17}(Al,Zn){sub 12} particles are precipitated. Hence, in this case, the effect of dispersion strengthening dominated the microhardness.

  15. a-150 plastic-equivalent gas: Topics by E-print Network

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

    representative example, and introduce a new parameter characterizing the level of small scale clustering in these scenarios. We show that viable Generalized Chaplygin Gas...

  16. air-sea gas transfer: Topics by E-print Network

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

    importance in engineering practice in the turbomachinery industry, namely, in the gas turbine Paris-Sud XI, Universit de 385 ECI International Conference on Boiling Heat...

  17. advanced natural gas-fired: Topics by E-print Network

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

    Drum Dryer for Food Processing Applications is the final report 8 A Case Study from Norway on Gas-Fired Power Plants, Carbon Sequestration, and Politics Environmental Sciences...

  18. advanced land-based gas: Topics by E-print Network

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

    Bose gas with attraction. This is a copy of the paper published in 1992 in Proceedings of NATO Advanced Research workshop on Singularities in Fluids, Plasmas and Optics...

  19. anthropogenic greenhouse-gas forcings: Topics by E-print Network

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

    Sciences Websites Summary: Determining Air Quality and Greenhouse Gas Impacts of Hydrogen Infrastructure and Fuel Cell engine (ICE) vehicles has been proposed as a strategy to...

  20. Special Issue on Sensor Networks, Revision, January 2003 1 of 8 Abstract--The highly distributed infrastructure provided by

    E-Print Network [OSTI]

    Sayeed, Akbar M.

    , such as energy and bandwidth. Existing centralized algorithms for classification/tracking could be adapted. In this paper, we discuss sensor networks for target classification and tracking. Our formulation is anchored on location-aware data routing to conserve system resources, such as energy and bandwidth. Distributed