National Library of Energy BETA

Sample records for boundaries network design

  1. Disjoint BoundaryBoundary Paths in Critical Circular Planar Networks

    E-Print Network [OSTI]

    Morrow, James A.

    Disjoint Boundary­Boundary Paths in Critical Circular Planar Networks Ryan Sturgell December 8 that in a critical circular planar network every interior vertex has three disjoint paths to the boundary. 1, 1998 Abstract This paper explores some properties of critical circular planar net­ works. The main

  2. Distributed Boundary Estimation using Sensor Networks

    E-Print Network [OSTI]

    Ramamritham, Krithi

    where such boundaries need to be detected include monitoring the spread of toxic gases [1], oil spills in oceans [2], or even tracking storm cloud front. Oil companies are interested in deploying off-shore sensor networks to monitor the area where oil spills normally happen. The focus in these cases

  3. Meta-Design: Expanding Boundaries and Redistributing Control in Design

    E-Print Network [OSTI]

    Fischer, Gerhard

    Meta-Design: Expanding Boundaries and Redistributing Control in Design Gerhard Fischer Center for Lifelong Learning and Design University of Colorado, Boulder http://l3d.cs.colorado.edu/~gerhard/ Abstract. Meta-design is an emerging conceptual framework aimed at defining and creating socio

  4. Water Network Design by MINLP

    E-Print Network [OSTI]

    2008-02-12

    We propose a solution method for a water-network optimization problem using a ... The optimal design of a WDN (Water Distribution Network) consists, in its ...

  5. PPRODO: Prediction of Protein Domain Boundaries Using Neural Networks

    E-Print Network [OSTI]

    Lee, Jooyoung

    PPRODO: Prediction of Protein Domain Boundaries Using Neural Networks Jaehyun Sim, Seung-Yeon Kim-BLAST. A 10-fold cross-validation technique is performed to obtain the parameters of neural networks using; neural network INTRODUCTION Domains are semi-independent 3-dimensional (3D) units in proteins, and often

  6. Connectivity of Confined Dense Networks: Boundary Effects and Scaling Laws

    E-Print Network [OSTI]

    Goussev, Arseni O.

    in statistical physics to analyze the effects that the boundaries of the geometry have on connectivity dense networks for each of these models. Finally, in order to demonstrate the versatility of our theory@toshiba-trel.com. #12;2 e.g., [1]­[3]). From a communications perspective, it is of paramount importance to understand

  7. Physical layer model design for wireless networks 

    E-Print Network [OSTI]

    Yu, Yi

    2009-06-02

    Wireless network analysis and simulations rely on accurate physical layer models. The increased interest in wireless network design and cross-layer design require an accurate and efficient physical layer model especially when a large number of nodes...

  8. Extending Boundaries with Meta-Design and Cultures of Participation

    E-Print Network [OSTI]

    Fischer, Gerhard

    urban planning problems, (3) modeling the buildings of the world in 3D, and (4) using Smart Grids to support energy sustainability. These examples show how meta- design and cultures of participation of participation, systemic problems, boundaries, distances, motivation, control, socio-technical environments ACM

  9. PERCOLATION ON GRAIN BOUNDARY NETWORKS: APPLICATION TO FISSION GAS RELEASE IN NUCLEAR FUELS

    SciTech Connect (OSTI)

    Paul C. Millett

    2012-02-01

    The percolation behavior of grain boundary networks is characterized in two- and three-dimensional lattices with circular macroscale cross-sections that correspond to nuclear fuel elements. The percolation of gas bubbles on grain boundaries, and the subsequent percolation of grain boundary networks is the primary mechanism of fission gas release from nuclear fuels. Both radial cracks and radial gradients in grain boundary property distributions are correlated with the fraction of grain boundaries vented to the free surfaces. Our results show that cracks surprisingly do not significantly increase the percolation of uniform grain boundary networks. However, for networks with radial gradients in boundary properties, the cracks can considerably raise the vented grain boundary content.

  10. integrated Wireless Information Network (iWIN) Lab A Robust Boundary Detection

    E-Print Network [OSTI]

    Wu, Hongyi

    · Related work · Motivation · Coconut algorithm · Simulation · Conclusion #12;integrated Wireless;integrated Wireless Information Network (iWIN) Lab OUTLINE · Introduction · Coconut algorithm · Coarse · Conclusion #12;integrated Wireless Information Network (iWIN) Lab COCONUT ALGORITHM · Coarse Boundary Surface

  11. Designing Neural Networks Using Gene Expression Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    1 Designing Neural Networks Using Gene Expression Programming CândidaFerreira Gepsoft, 73 Elmtree aspects of neural networks, such as the weights, the thresholds, and the network architec- ture. Indeed neural network, including the architecture, the weights and thresholds, could be totally encoded

  12. Shortest Paths, Network Design and Associated Polyhedra

    E-Print Network [OSTI]

    Magnanti, Thomas L.

    We study a specialized version of network design problems that arise in telecommunication, transportation and other industries. The problem, a generalization of the shortest path problem, is defined on an undirected network ...

  13. Augmented Network Model For Engineering System Design

    E-Print Network [OSTI]

    de Weck, Olivier L.

    can have different capacities and costs, maintenance routines, dynamics. Link existence can vary design". Various fields have applied network modeling to engineering applications, such as operations, with their network description and brief discussion of simple network statistics. Then, we describe in detail one

  14. Crystallographically consistent percolation theory for grain boundary networks

    E-Print Network [OSTI]

    Frary, Megan

    2005-01-01

    Grain boundaries are known to play a role in many important material properties including creep resistance, ductility and cracking resistance. Although the structure and properties of individual boundaries are important, ...

  15. Representativeness-based Sampling Network Design for the State...

    Office of Scientific and Technical Information (OSTI)

    Representativeness-based Sampling Network Design for the State of Alaska Citation Details In-Document Search Title: Representativeness-based Sampling Network Design for the State...

  16. Representativeness based Sampling Network Design for the State...

    Office of Scientific and Technical Information (OSTI)

    Representativeness based Sampling Network Design for the State of Alaska Title: Representativeness-based Sampling Network Design for the State of Alaska Authors: Forrest M. Hoffman...

  17. Designing asymmetric neural networks with associative memory

    SciTech Connect (OSTI)

    Zhao Hong [Department of Physics, Xiamen University, Xiamen 361005 (China)

    2004-12-01

    A strategy for designing asymmetric neural networks of associative memory with controllable degree of symmetry and controllable basins of attraction is presented. It is shown that the performance of the networks depends on the degree of the symmetry, and by adjusting the degree of the symmetry the spurious memories or unwanted attractors can be suppressed completely.

  18. A Survey of Network Design Problems

    E-Print Network [OSTI]

    Wong, Richard T.

    This report is a survey of the design of various types of networks that frequently occur in the study of transportation and communication problems. The report contains a general framework which facilitates comparisons ...

  19. A Survey of Network Design Problems

    E-Print Network [OSTI]

    Wong, Richard T.

    Network design problems arise in many different application areas such as air freight, highway traffic, and communication systems. The intention of this survey is to present a coherent unified view of a number of papers ...

  20. Designing a National Network for Manufacturing Innovation

    E-Print Network [OSTI]

    Designing a National Network for Manufacturing Innovation NNMI and The Additive Manufacturing Pilot Introduction · NNMI principles · Public NMMI Design · Pilot Institute on Additive Manufacturing #12;IMI Mission Process, such as Additive Manufacturing An Advanced Material ­ e.g. lightweight, low cost carbon fiber

  1. On cost-effective communication network designing

    E-Print Network [OSTI]

    Guoqiang Zhang

    2010-04-14

    How to efficiently design a communication network is a paramount task for network designing and engineering. It is, however, not a single objective optimization process as perceived by most previous researches, i.e., to maximize its transmission capacity, but a multi-objective optimization process, with lowering its cost to be another important objective. These two objectives are often contradictive in that optimizing one objective may deteriorate the other. After a deep investigation of the impact that network topology, node capability scheme and routing algorithm as well as their interplays have on the two objectives, this letter presents a systematic approach to achieve a cost-effective design by carefully choosing the three designing aspects. Only when routing algorithm and node capability scheme are elegantly chosen can BA-like scale-free networks have the potential of achieving good tradeoff between the two objectives. Random networks, on the other hand, have the built-in character for a cost-effective design, especially when other aspects cannot be determined beforehand.

  2. Proposal of CSP based Network Design and Construction

    E-Print Network [OSTI]

    Fukunaga, Chikara

    Proposal of CSP based Network Design and Construction Session:Network and Protocol Short PaperWire network. The design was based on a formal method using CSP ( Communicating Sequential Processes]. In this paper we discuss the reason why we use CSP as a formal design method for the router-network system

  3. Green Networks: Energy Efficient Design for Optical Networks Balagangadhar G. Bathula, Jaafar M. H. Elmirghani

    E-Print Network [OSTI]

    Bathula, Balagangadhar G

    Green Networks: Energy Efficient Design for Optical Networks Balagangadhar G. Bathula, Jaafar M. H in backbone networks such as optical networks increase. Energy consumption of optical networks is an important the energy consumption of optical networks. We propose sleep cycle protocols for use in the network nodes

  4. Representativeness-Based Sampling Network Design for the State...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Representativeness-Based Sampling Network Design for the State of Alaska Citation Details In-Document Search Title: Representativeness-Based Sampling Network...

  5. Design of a model propulsor for a boundary layer ingesting aircraft

    E-Print Network [OSTI]

    Grasch, Adam D. (Adam Davis)

    2013-01-01

    This thesis presents contributions to the analysis and design of propulsion simulators for 1:11 and 1:4 scale model wind tunnel investigations of an advanced civil transport aircraft with boundary layer ingestion (BLI). ...

  6. Network-Design Sensitivity Analysis Paul Tune and Matthew Roughan

    E-Print Network [OSTI]

    Roughan, Matthew

    Network-Design Sensitivity Analysis Paul Tune and Matthew Roughan matthew University of Adelaide [3mm] )Network-Design Sensitivity Analysis July 2, 2014 1 / 29 #12;The Problem Traffic of Mathematical Sciences University of Adelaide [3mm] )Network-Design Sensitivity Analysis July 2, 2014 3 / 29 #12

  7. Generalized Graph Products for Network Design and Analysis

    E-Print Network [OSTI]

    Roughan, Matthew

    Generalized Graph Products for Network Design and Analysis Eric Parsonage, Hung X. Nguyen, Rhys--Network design, as it is currently practiced, involves putting devices together to create a network. However as a whole object. In this paper we develop generalized graph products that allow the mathematical design

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

    E-Print Network [OSTI]

    Dilaveroglu, Sebnem 1986-

    2012-08-22

    This study addresses the problem of designing a new natural gas transmission network or expanding an existing network while minimizing the total investment and operating costs. A substantial reduction in costs can be ...

  9. Energy Mobility Network : system design, interfaces, and future interactions

    E-Print Network [OSTI]

    Cheung, Natalie Wen Yua

    2011-01-01

    The Energy Mobility Network is a mobile, networked energy production, consumption and sharing system that is designed to motivate users to be more aware of their energy consumption. In particular, the system provides a ...

  10. Routing for disruption tolerant networks: taxonomy and design

    E-Print Network [OSTI]

    Spyropoulos, Thrasyvoulos; Rais, Rao Naveed; Turletti, Thierry; Obraczka, Katia; Vasilakos, Athanasios

    2010-01-01

    tolerant networks: taxonomy and design Thrasyvoulosattempt to create a taxonomy for intermittently connectedbetween the proposed DTN taxonomy and the basic opportu-

  11. INTERACTIONS OF REALM BOUNDARIES AND END-TO-ENG NETWORK APPLICATIONS

    SciTech Connect (OSTI)

    M. FISK; W. FENG

    2000-08-01

    One of the design principles of the Internet is that the network is made more flexible, and therefore useful, by placing functionality in end applications rather than in network infrastructure. Network gateways that violate this principle are considered harmful. This paper demonstrates that such upper-level gateways exist because of realm-specific performance, security, and protocol needs of certain portions of the Internet. Placing this functionality in end hosts is, conversely, harmful to the flexibility of using the Internet to link disparate networks. Requirements are developed for a protocol to allow end-hosts and gateways to negotiate the functionality of these gateways in terms of the needs of both end applications and network realms.

  12. INTEGRATED DESIGN AND CONTROL OF HEAT EXCHANGER NETWORKS

    E-Print Network [OSTI]

    Skogestad, Sigurd

    INTEGRATED DESIGN AND CONTROL OF HEAT EXCHANGER NETWORKS #12; by Knut Wiig Mathisen A Thesis examples in their research attitudes. Truls also introduced me to heat exchanger networks, and has been have worked closely together with John Ulvøy on a paper on heat exchanger network synthesis

  13. Design and implementation of an integrated network management system for TCP/IP-based distributed networks 

    E-Print Network [OSTI]

    Patel, Samir K.

    1993-01-01

    in designing of tools for network management. Various workstation vendors have developed such tools for their window systems, but many of the tools are not compatible for other systems. The X Window System, however, provides hardware independent and network...

  14. Modern Wireless Network Design Based on Constrained Capacity

    E-Print Network [OSTI]

    Valenti, Matthew C.

    The capacity in this channel is: ­ where Eb is the energy per (information) bit. This capacity is achievedModern Wireless Network Design Based on Constrained Capacity April 20, 2005 Matthew Valenti Wireless Network Design Based on Constrained Capacity 2/37 Overview Key observations: ­ Capacity

  15. Optimal Groundwater Remediation Network Design using Selective Membranes

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Optimal Groundwater Remediation Network Design using Selective Membranes Eugenio Bringasa with the optimal synthesis of groundwater remediation networks for the valorization of anionic pollutants by means possible design alternatives are proposed. The aim of this work is to obtain a minimum cost groundwater

  16. Composite Variable Formulations for Express Shipment Service Network Design

    E-Print Network [OSTI]

    Gendron, Bernard

    · Cynthia Barnhart · Keith A. Ware Department of Management, United States Air Force Academy, Colorado, Kentucky 40223 In this paper we describe a new approach to solving the express shipment service net- work design problem. Conventional polyhedral methods for network design and network loading problems do

  17. Effect of the pre-existing carbides on the grain boundary network during grain boundary engineering in a nickel based alloy

    SciTech Connect (OSTI)

    Liu, Tingguang; Xia, Shuang; Li, Hui; Zhou, Bangxin; Bai, Qin

    2014-05-01

    Grain boundary engineering was carried out on an aging-treated nickel based Alloy 690, which has precipitated carbides at grain boundaries. Electron backscatter diffraction technique was used to investigate the grain boundary networks. Results show that, compared with the solution-annealed samples, the aging-treated samples with pre-existing carbides at grain boundaries need longer duration or higher temperature during annealing after low-strain tensile deformation for forming high proportion of low-? coincidence site lattice grain boundaries (more than 75%). The reason is that the primary recrystallization is inhibited or retarded owing to that the pre-existing carbides are barriers to grain boundaries migration. - Highlights: • Study of GBE as function of pre-existing GB carbides, tensile strain and annealing • Recrystallization of GBE is inhibited or retarded by the pre-existing carbides. • Retained carbides after annealing show the original GB positions. • More than 80% of special GBs were formed after the modification of GBE processing. • Multiple twinning during recrystallization is the key process of GBE.

  18. An effect of the networks of the subgrain boundaries on spectral responses of thick CdZnTe detectors

    SciTech Connect (OSTI)

    Bolotnikov, A.; Butcher, J.; Camarda, G.; Cui, Y.; Egarievwe, S.; Fochuk, P.; Gul,R.; Hamade, M.; Hossain, A.; Kim, K.; Kopach,O.; Petryk, M.; Raghothamachar, B.; Yang, G.; and James, R.B.

    2011-08-12

    CdZnTe (CZT) crystals used for nuclear-radiation detectors often contain high concentrations of subgrain boundaries and networks of poligonized dislocations that can significantly degrade the performance of semiconductor devices. These defects exist in all commercial CZT materials, regardless of their growth techniques and their vendor. We describe our new results from examining such detectors using IR transmission microscopy and white X-ray beam diffraction topography. We emphasize the roles on the devices performances of networks of subgrain boundaries with low dislocation densities, such as poligonized dislocations and mosaic structures. Specifically, we evaluated their effects on the gamma-ray responses of thick, >10 mm, CZT detectors. Our findings set the lower limit on the energy resolution of CZT detectors containing dense networks of subgrain boundaries, and walls of dislocations.

  19. Introduction Operations Management of Blood Banking Systems Blood Banking Systems Network Design Supply Chain Network

    E-Print Network [OSTI]

    Nagurney, Anna

    Introduction Operations Management of Blood Banking Systems Blood Banking Systems Network Design Supply Chain Network Operations Management and Design of A Sustainable Blood Banking System Amir Masoumi of Massachusetts Amherst #12;Introduction Operations Management of Blood Banking Systems Blood Banking Systems

  20. Designing Mobility Models based on Social Networks Theory

    E-Print Network [OSTI]

    Mascolo, Cecilia

    Designing Mobility Models based on Social Networks Theory Mirco Musolesi Cecilia Mascolo m in social sciences for years. In this paper we propose a new mobility model founded on social network theory of the validation is, therefore, highly dependent on how realistic the movement models used in the simulations are

  1. On the Design and Implementation of Secure Network Protocols

    E-Print Network [OSTI]

    Paterson, Kenny

    On the Design and Implementation of Secure Network Protocols Nadhem J. AlFardan Thesis submitted Hart, for providing all what I needed to carry out my laboratory work. Finally, thanks to everyone who kept asking me "are you done yet?". 4 #12;Abstract Network Protocols are critical to the operation

  2. Design of Sustainable Supply Chain Networks Sustainable Cities

    E-Print Network [OSTI]

    Nagurney, Anna

    Design of Sustainable Supply Chain Networks for Sustainable Cities Anna Nagurney Isenberg School Chains Methodology Applied Supply Chain Network Game Theory Models of Relevance to Sustainable Cities 1400 years, according to the IPCC. Anna Nagurney Sustainability #12;Pollution and Environmental Impacts

  3. Grain boundary networks in high-performance, heteroepitaxial, YBCO films on polycrystalline, cube-textured metals

    SciTech Connect (OSTI)

    Goyal, Amit [ORNL; Field, Dr. David [Washington State University; Held, R. [Institute of Physics, Augsburg University, Augsburg, Germany; Mannhart, J. [Institute of Physics, Augsburg University, Augsburg, Germany

    2011-01-01

    Grain boundaries (GBs) in high-temperature superconductors suppress the critical current density (Jc) dramatically [1-3]. The Jc drops exponentially when GB-misorientation exceeds 4 [3]. To reduce the number of high-angle GBs, fabrication of biaxially-textured, superconducting wires via epitaxial growth on cube-textured metals has been widely investigated [4-6]. Such wires have exhibited very high-Jc in applied magnetic fields despite having a majority of GBs with total misorientations greater than 4 . Here we show that GB networks in these wires have numerous GBs with out-of-plane misorientations > 4 and few boundaries having in-plane misorientations > 4 . The high performance can be explained if the Jc is determined primarily by in-plane misorientations. This supposition was confirmed by in-field transport measurements on artificially fabricated bicrystals of superconductors having only out-of-plane misorientations. Atomic resolution imaging of bicrystals with out-of-plane misorientations show that superconducting ab-planes are continuous across such GBs in contrast to GBs with in-plane misorientations.

  4. Optimal Design and Scheduling of Unsteady State Material Recovery Networks 

    E-Print Network [OSTI]

    Rabie, Arwa H.

    2010-01-14

    methodologies: the first is a hierarchical multi-step methodology developed for the design and scheduling of batch water (material of interest) recycle networks. A new source- double tank-sink arrangement is introduced to overcome the limitation of samecycle...

  5. Modelling and Design of Resilient Networks under Challenges

    E-Print Network [OSTI]

    Cetinkaya, Egemen Kemal

    2013-12-31

    that can help evaluate design choices for the current and Future Internet. Graph models to analyse critical infrastructures are examined and a multilevel graph model is developed to study interdependencies between different networks. Furthermore, graph...

  6. DESIGNING COMMUNICATION NETWORKS VIA HILBERT MODULAR FORMS

    E-Print Network [OSTI]

    Network Theory, the arithmetic examples are partic- ularly interesting: all Ramanujan graphs are super-expanders; but in addition the examples have many other useful properties, for example very good expansion constants

  7. Communication Reliability in Network on Chip Designs 

    E-Print Network [OSTI]

    Kumar, Reeshav

    2012-10-19

    The performance of low latency Network on Chip (NoC) architectures, which incorporate fast bypass paths to reduce communication latency, is limited by crosstalk induced skewing of signal transitions on link wires. As a ...

  8. GLOBAL OPTIMIZATION OF NONLINEAR NETWORK DESIGN 1 ...

    E-Print Network [OSTI]

    2012-04-30

    common fluid networks of water, crude oil, natural gas satisfy the above assump- ... Assumption (A3) states that cost per unit length and flow capacity Imax e,r.

  9. Imbibition well stimulation via neural network design

    DOE Patents [OSTI]

    Weiss, William (Socorro, NM)

    2007-08-14

    A method for stimulation of hydrocarbon production via imbibition by utilization of surfactants. The method includes use of fuzzy logic and neural network architecture constructs to determine surfactant use.

  10. Stability analysis and design of time-domain acoustic impedance boundary conditions for lined duct with mean flow

    E-Print Network [OSTI]

    Huang, Xun

    Stability analysis and design of time-domain acoustic impedance boundary conditions for lined duct in a lined duct with uniform mean flow, which has important practical interest for noise emission by aero boundary conditions act as closed-loop feedbacks to an overall duct acoustic system. It turns out

  11. Designing Self-Sustainable Photovoltaic Sensor Network

    E-Print Network [OSTI]

    California at Berkeley, University of

    , 2006 #12;2 Target Environment · Outdoor application ­ Wired power and battery has limitations. ­ Solar for power saving. ­ Power saving for single-hop is trivial. #12;3 Related Work on Solar Powered Sensor #12;4 Goals · Power saving for multi-hop networks under solar energy source. ­ Solar Energy: time

  12. 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

  13. NASA Launches ATREX Space Network to Begin New Design Phase

    E-Print Network [OSTI]

    Christian, Eric

    Design Phase - 8 Dual Frequency Radar Arrives at Goddard - 9 Goddard Community Visitor Center Hosts TitanNASA Launches ATREX Pg 3 Space Network to Begin New Design Phase Pg 8 Visitor Center Hosts Titan://www.nasa.gov/centers/goddard/news/goddard-view.html Managing Editor: Trusilla Steele Editor: John M. Putman News items for publication in Goddard View must

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

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal4Cubic43,728ConfigurationListNetwork

  15. Abstract --Most logistics network design models assume exogenous customer demand that is independent of the service

    E-Print Network [OSTI]

    Graves, Stephen C.

    Abstract -- Most logistics network design models assume exogenous customer demand for the network design decision making process. Index Terms -- Logistics Network Design, Demand Classes, Benefits. In most logistics network design models, the customer demand is exogenous and defined as a uniform

  16. Self-organized network design by link survivals and shortcuts

    E-Print Network [OSTI]

    Hayashi, Yukio

    2011-01-01

    One of the challenges for future infrastructures is how to design a network with high efficiency and strong connectivity at low cost. We propose self-organized geographical networks beyond the vulnerable scale-free structure found in many real systems. The networks with spatially concentrated nodes emerge through link survival and path reinforcement on routing flows in a wireless environment with a constant transmission range of a node. In particular, we show that adding some shortcuts induces both the small-world effect and a significant improvement of the robustness to the same level as in the optimal bimodal networks. Such a simple universal mechanism will open prospective ways for several applications in wide-area ad hoc networks, smart grids, and urban planning.

  17. Design and analysis of high performance multistage interconnection networks 

    E-Print Network [OSTI]

    Bhogavilli, Suresh K

    1993-01-01

    Major Subject: Electrical Engineering ABSTRACT Design and Analysis of High Performance Multistage Interconnection Networks. (December 1993) Suresh K. Bhogavilli, B. Tech. , J. N. T. University Chair of Advisory Committee: Dr. Hosame Abu-Amara Small... the next stage buffers are not full. Thus r, = A and this value doesn't change with network size. But this model results in cycle loss, When a packet from the full buffer moves forward, a cycle is lost since it will not allow the packets...

  18. Integrated network design and scheduling problems : optimization algorithms and applications.

    SciTech Connect (OSTI)

    Nurre, Sarah G.; Carlson, Jeffrey J.

    2014-01-01

    We consider the class of integrated network design and scheduling problems. These problems focus on selecting and scheduling operations that will change the characteristics of a network, while being speci cally concerned with the performance of the network over time. Motivating applications of INDS problems include infrastructure restoration after extreme events and building humanitarian distribution supply chains. While similar models have been proposed, no one has performed an extensive review of INDS problems from their complexity, network and scheduling characteristics, information, and solution methods. We examine INDS problems under a parallel identical machine scheduling environment where the performance of the network is evaluated by solving classic network optimization problems. We classify that all considered INDS problems as NP-Hard and propose a novel heuristic dispatching rule algorithm that selects and schedules sets of arcs based on their interactions in the network. We present computational analysis based on realistic data sets representing the infrastructures of coastal New Hanover County, North Carolina, lower Manhattan, New York, and a realistic arti cial community CLARC County. These tests demonstrate the importance of a dispatching rule to arrive at near-optimal solutions during real-time decision making activities. We extend INDS problems to incorporate release dates which represent the earliest an operation can be performed and exible release dates through the introduction of specialized machine(s) that can perform work to move the release date earlier in time. An online optimization setting is explored where the release date of a component is not known.

  19. Design Aspects of Open Municipal Broadband Networks "(Invited Paper)"

    E-Print Network [OSTI]

    developmental project. Furthermore, we present as a case study, all issues of the designing of the Metropolitan of the fiber and ducting infrastructure. Furthermore, we present as a case study, critical issues regarding Area Network of Patras, the third biggest city of Greece. The major target of the MAN of Patras

  20. Cost and Reliability Considerations in Designing the Next-Generation IP over WDM Backbone Networks

    E-Print Network [OSTI]

    Greenberg, Albert

    Cost and Reliability Considerations in Designing the Next-Generation IP over WDM Backbone Networks of the cost and reliability considerations involved in designing the next-generation backbone network. Our cost of the network. Hence, a fundamental redesign of the backbone network which avoids such redundant

  1. Design and Analysis of Communication Protocols for Quantum Repeater Networks

    E-Print Network [OSTI]

    Cody Jones; Danny Kim; Matthew T. Rakher; Paul G. Kwiat; Thaddeus D. Ladd

    2015-05-06

    We analyze how the performance of a quantum-repeater network depends on the protocol employed to distribute entanglement, and we find that the choice of repeater-to-repeater link protocol has a profound impact on communication rate as a function of hardware parameters. We develop numerical simulations of quantum networks using different protocols, where the repeater hardware is modeled in terms of key performance parameters, such as photon generation rate and collection efficiency. These parameters are motivated by recent experimental demonstrations in quantum dots, trapped ions, and nitrogen-vacancy centers in diamond. We find that a quantum-dot repeater with the newest protocol ("MidpointSource") delivers the highest communication rate when there is low probability of establishing entanglement per transmission, and in some cases the rate is orders of magnitude higher than other schemes. Our simulation tools can be used to evaluate communication protocols as part of designing a large-scale quantum network.

  2. PHYSICAL REVIEW E 85, 011138 (2012) Impact of boundaries on fully connected random geometric networks

    E-Print Network [OSTI]

    Dettmann, Carl

    2012-01-01

    including in nanoscience [3], epidemiology [4,5], forest fires [6], social networks [7,8], and wireless of reliable wireless mesh networks. These consist of communication devices (the nodes) that pass messages to each other via other nodes rather than a central router. This allows the network to operate seamlessly

  3. A BOUNDARY ELEMENT FORMULATION FOR THE COMPUTER DESIGN OF SUBSTATION I. Colominas, F. Navarrina, and M. Casteleiro

    E-Print Network [OSTI]

    Colominas, Ignasi

    A BOUNDARY ELEMENT FORMULATION FOR THE COMPUTER DESIGN OF SUBSTATION GROUNDING I. Colominas, F approach for the numerical com- putation of substation grounding systems is presented. In this general in the BEM formulation to reduce computational cost. While linear and parabolic leakage current elements

  4. Energy-Efficient Design of Wavelength-Routing Networks A. Bianco(1)

    E-Print Network [OSTI]

    design mainly focused on optimizing network resources mini- mizing capital expenditures (CAPEX initially lead to larger CAPEX

  5. Decentralized Utility-based Sensor Network Design Narayanan Sadagopan and Bhaskar Krishnamachari

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Decentralized Utility-based Sensor Network Design Narayanan Sadagopan and Bhaskar Krishnamachari to designing these networks based on utility functions. We investigate the design of appropriate local utility functions for each sensor such that while each sensor "selfishly" optimizes its own utility, the network

  6. Boundary-induced orientation of dynamic filament networks and vesicle agglomerations

    E-Print Network [OSTI]

    Philip Greulich; Ludger Santen

    2011-06-28

    We find a statistical mechanism that can adjust orientations of intracellular filaments to cell geometry in absence of organizing centers. The effect is based on random and isotropic filament (de-)polymerization dynamics and is independent of filament interactions and explicit regulation. It can be understood by an analogy to electrostatics and appears to be induced by the confining boundaries; for periodic boundary conditions no orientational bias emerges. Including active transport of particles, the model reproduces experimental observations of vesicle accumulations in transected axons.

  7. Knowledge Network: An Information Repository with Services for Managing Concurrent Engineering Design

    E-Print Network [OSTI]

    Fox, Mark S.

    Knowledge Network: An Information Repository with Services for Managing Concurrent Engineering design engineers. The KAD system centers on a knowledge network that stores design knowledge and provides are constructing a Knowledge Aided Design (KAD) system for supporting concurrent engineering design and enhancing

  8. Boundary Helps: Efficient Routing Protocol using Directional Antennas in Cognitive Radio Networks

    E-Print Network [OSTI]

    Wu, Jie

    directions at the boundary area of a primary user. For every optional route between a source node, and piggybacks that information to the source node for route selection. However, it will cause a lot Ying Dai and Jie Wu Department of Computer and Information Sciences Temple University, Philadelphia, PA

  9. Design and Implementation of a Network Interface for a Multi-Channel

    E-Print Network [OSTI]

    Jantsch, Axel

    developed for the Network Interface (NI) for handling multichannel circuit switched NoC. A flexible read. The flexible design in both NI and NoC (in terms of different dimensions of row and column of the network, throughputs of both the one network and two networks have been monitored, determining the area and power

  10. School of Architecture, Design and the Built Environment Delta T optimisation of district heating network

    E-Print Network [OSTI]

    Evans, Paul

    School of Architecture, Design and the Built Environment Delta T optimisation of district heating of any network. Most existing district heating systems work at small (10-15 C) delta T. Although for the conventional and optimised design of the district heating network. The network operation will be simulated

  11. Variation-aware Clock Network Design Methodology for Ultra-Low Voltage (ULV) Circuits

    E-Print Network [OSTI]

    Lim, Sung Kyu

    Variation-aware Clock Network Design Methodology for Ultra-Low Voltage (ULV) Circuits Xin Zhao networks for ultra-low voltage (ULV) circuits. We show that both clock slew and skew play important roles) at comparable or even higher Fmax compared with the existing methods. Keywords--clock network design, ultra-low

  12. Boundary Shape Control of Navier-Stokes Equations and Geometrical Design Method for Blade's Surface in the Impeller

    E-Print Network [OSTI]

    Kaitai Li; Jian Su; Liquan Mei

    2008-01-22

    In this paper A Geometrical Design Method for Blade's surface $\\Im$ in the impeller is provided here $\\Im$ is a solution to a coupling system consisting of the well-known Navier-Stokes equations and a four order elliptic boundary value problem . The coupling system is used to describe the relations between solutions of Navier-Stokes equations and the geometry of the domain occupied by fluids, and also provides new theory and methods for optimal geometric design of the boundary of domain mentioned above. This coupling system is the Eular-Lagrange equations of the optimal control problem which is describing a new principle of the geometric design for the blade's surface of an impeller. The control variable is the surface of the blade and the state equations are Navier-Stokes equations with mixed boundary conditions in the channel between two blades. The objective functional depending on the geometry shape of blade's surface describes the dissipation energy of the flow and the power of the impeller. First we prove the existence of a solution of the optimal control problem. Then we use a special coordinate system of the Navier-Stokes equations to derive the objective functional which depends on the surface $\\Theta$ explicitly. We also show the weakly continuity of the solution of the Navier-Stokes equations with respect to the geometry shape of the blade's surface.

  13. Boundary Shape Control of Navier-Stokes Equations and Geometrical Design Method for Blade's Surface in the Impeller

    E-Print Network [OSTI]

    Li, Kaitai; Mei, Liquan

    2008-01-01

    In this paper A Geometrical Design Method for Blade's surface $\\Im$ in the impeller is provided here $\\Im$ is a solution to a coupling system consisting of the well-known Navier-Stokes equations and a four order elliptic boundary value problem . The coupling system is used to describe the relations between solutions of Navier-Stokes equations and the geometry of the domain occupied by fluids, and also provides new theory and methods for optimal geometric design of the boundary of domain mentioned above. This coupling system is the Eular-Lagrange equations of the optimal control problem which is describing a new principle of the geometric design for the blade's surface of an impeller. The control variable is the surface of the blade and the state equations are Navier-Stokes equations with mixed boundary conditions in the channel between two blades. The objective functional depending on the geometry shape of blade's surface describes the dissipation energy of the flow and the power of the impeller. First we pro...

  14. Simulation and optimization tools to study design principles of biological networks

    E-Print Network [OSTI]

    Adiwijaya, Bambang Senoaji

    2006-01-01

    Recent studies have developed preliminary wiring diagrams for a number of important biological networks. However, the design principles governing the construction and operation of these networks remain mostly unknown. To ...

  15. Background and Motivation Literature The Model Examples Summary Sustainable Supply Chain Network Design

    E-Print Network [OSTI]

    Nagurney, Anna

    Background and Motivation Literature The Model Examples Summary Sustainable Supply Chain Network and Motivation Literature The Model Examples Summary Acknowledgments The first author's research was supported Sustainable Supply Chain Network Design #12;Background and Motivation Literature The Model Examples Summary

  16. Reducing total fulfillment at costs at Amazon EU through network design optimization

    E-Print Network [OSTI]

    Merriam, Ken (Ken A.)

    2007-01-01

    A key supply chain management issue encountered by any business requiring a distribution system is in designing its distribution network. A distribution network configuration has both direct and indirect ongoing effects ...

  17. Design of Recycle/Reuse Networks with Thermal Effects and Variable Sources 

    E-Print Network [OSTI]

    Zavala Oseguera, Jose Guadalupe

    2010-10-12

    Recycle/reuse networks are commonly used in industrial facilities to conserve natural resources, reduce environmental impact, and improve process economics. The design of these networks is a challenging task because of ...

  18. REWIRE: An Optimization-based Framework for Data Center Network Design

    E-Print Network [OSTI]

    Waterloo, University of

    REWIRE: An Optimization-based Framework for Data Center Network Design Andrew R. Curtis, Tommy for data center network (DCN) architectures, designing a DCN remains challenging. DCN design is especially on the topology (e.g., a fat-tree). Recent advances in routing protocols allow data center servers to fully

  19. Data Stream Query Optimization Across System Boundaries of Server and Sensor Network

    E-Print Network [OSTI]

    Lindner, Wolfgang

    (SNs). Such networks may consist of small battery-powered motes with possibly lossy wireless of the motes. This paper fo- cusses on such SNs of battery-powered motes. SNQPs act as a natural data source The Borealis system [11] uses the box-and-arrow paradigm to specify the data flow. A box represents a query

  20. Design and Analysis of Low Complexity Network Coding Schemes 

    E-Print Network [OSTI]

    Tabatabaei-Yazdi, Seyed

    2012-02-20

    In classical network information theory, information packets are treated as commodities, and the nodes of the network are only allowed to duplicate and forward the packets. The new paradigm of network coding, which was ...

  1. "Non-Reflective" Boundary Design via Remote Sensing and PID Control Valve

    SciTech Connect (OSTI)

    Zhang, Qin Fen; Karney, Professor Byran W.; Pejovic, Dr. Stanislav

    2011-01-01

    This paper develops the concept of a nonreflective (or semireflective) boundary condition using the combination of a remote sensor and a control system to modulate a relief valve. The essential idea is to sense the pressure change at a remote location and then to use the measured data to adjust the opening of an active control valve at the end of the line to eliminate or attenuate the wave reflections at the valve, thus controlling system transient pressures. This novel idea is shown here through numerical simulation to have considerable potential for transient protection. Using this model, wave reflections and resonance can be effectively eliminated for frictionless pipelines or initial no-flow conditions and can be better controlled in more realistic pipelines for a range of transient disturbances. In addition, the features of even-order harmonics and nonreflective boundary conditions during steady oscillation, obtained through time domain transient analysis, are verified by hydraulic impedance analysis in the frequency domain.

  2. Major Principles on the Design of an Educational Network CHRISTOS BOURAS

    E-Print Network [OSTI]

    an educational network, these facilities include collaboration, navigation into the information resources for an educational communications network is the remote access to resources of educational information, as wellMajor Principles on the Design of an Educational Network CHRISTOS BOURAS 1,2 DIMITRIS FOTAKIS 1

  3. Neural-Network-Based Fuzzy Identifier: Design and Evaluation Dr. Kasim M. Al-Aubidy

    E-Print Network [OSTI]

    Neural-Network-Based Fuzzy Identifier: Design and Evaluation Dr. Kasim M. Al-Aubidy Computer is represented as a feed forward neural network, is able to incorporate qualitative and quantitative information into adaptive fuzzy and neural networks[3]. The proposed approach handles an architecture which is somehow

  4. The Importance, Design and Implementation of a Middleware for Networked Control Systems

    E-Print Network [OSTI]

    The Importance, Design and Implementation of a Middleware for Networked Control Systems Kyoung, networked control systems may soon become prevalent in many control applica- tions. While the capability major challenge: a middleware framework that en- ables a networked control system to be implemented

  5. The Design and Evaluation of a Wireless Sensor Network for Mine Safety Monitoring

    E-Print Network [OSTI]

    Huang, Changcheng

    The Design and Evaluation of a Wireless Sensor Network for Mine Safety Monitoring Xiaoguang Niu12 sensor network for mine safety monitoring. Based on the characteristics of underground mine gallery overhead with a well-bounded offset error for large-scale sensor networks. This mechanism is easy

  6. Grand Challenges and Opportunities Supply Chain Networks: From Analysis to Design

    E-Print Network [OSTI]

    Nagurney, Anna

    Challenges in Supply Chain Networks #12;Energy Supply Chains Anna Nagurney Grand Challenges in Supply ChainGrand Challenges and Opportunities in Supply Chain Networks: From Analysis to Design Anna Nagurney of Technology Gothenburg, Sweden, March 4, 2013 Anna Nagurney Grand Challenges in Supply Chain Networks #12

  7. Capacity-constrained Design of Resilient Multi-tier Wireless Mesh Networks

    E-Print Network [OSTI]

    Iyer, Sridhar

    of the recursion, WIND successively generates a sub-graph (Composite Unit (CU)) of the topology by deriving it outCapacity-constrained Design of Resilient Multi-tier Wireless Mesh Networks Raghuraman R of automated design of Wireless Mesh Networks (WMN). The general scenario we envision is that of constructing

  8. Energy-Efficient Modulation Design for Reliable Communication in Wireless Networks

    E-Print Network [OSTI]

    Gursoy, Mustafa Cenk

    Energy-Efficient Modulation Design for Reliable Communication in Wireless Networks Qing Chen transmit power scenarios. We have noted that variable power schemes can attain higher energy-efficiencies. The analysis of energy-efficient modulation design is also conducted in multi- hop linear networks

  9. Network coding, multi-packet reception, and feedback : design tools for wireless broadcast networks

    E-Print Network [OSTI]

    Rezaee, Arman

    2011-01-01

    In this thesis, we address the combination of three technologies in wireless broadcast networks: network coding, multi-packet reception (MPR) and feedback. We will primarily discuss the performance of a single-hop network, ...

  10. COUPLING CONSTRAINT BOUNDARY MAPPING IN THE PROCESS DESIGN PARAMETER SPACE WITH COMMERCIAL PROCESS SIMULATOR TO ESTIMATE PROCESS DESIGN RELIABILITY

    E-Print Network [OSTI]

    Myers, Elim Rosalva

    2010-01-25

    design and an evaluation of the safety factor effectiveness in increasing reliability would identify which equipment is unnecessarily oversized, which is critically undersized and which uncertainties are the principal contributors to low reliability...

  11. An Implicit Optimization Approach for Survivable Network Design

    E-Print Network [OSTI]

    Pinar, Ali

    the security of these networks. The Northeast blackout in 2003 is frequently used as an example of the severe

  12. SNDlib 1.0–Survivable Network Design Library

    E-Print Network [OSTI]

    2007-08-03

    Aug 3, 2007 ... 1.0, the library contains data related to 22 networks which, .... integer multiple of a base routing unit of 2 Mbit/s or 155 Mbit/s. ...... The ATLANTA network represents an ATM network in Los Angeles, the NEWYORK net- work a ...

  13. Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Berkeley, University of

    Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong, Xiaofan and the power they obtain from their environment. Several micro-solar powered designs have been developed a taxonomy of the micro-solar design space identifying key components, design choices, interactions

  14. Energy-Efficient Design and Optimization of Wireline Access Networks

    E-Print Network [OSTI]

    Wilfong, Gordon

    to 50% of the energy consumed by DSLAM nodes [8]. Therefore, remote DSLAM units (placed closer the energy consumption as well as increase the reach of the access network. This paper attempts to formalize network and introducing remote DSLAM units. I. INTRODUCTION Energy-related expenses have become a major

  15. Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Berkeley, University of

    Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong Xiaofan or to redistribute to lists, requires prior specific permission. #12;Design and Analysis of Micro-Solar Power Systems. Several micro-solar powered designs have been developed to address this important problem but little

  16. BROADBAND ANTENNA MATCHING NETWORK DESIGN AND APPLICATION FOR RF PLASMA ION SOURCE

    SciTech Connect (OSTI)

    Shin, Ki [ORNL; Kang, Yoon W [ORNL; Piller, Chip [ORNL; Fathy, Aly [University of Tennessee, Knoxville (UTK)

    2011-01-01

    The RF ion source at Spallation Neutron Source has been upgraded to meet higher beam power requirement. One important subsystem for efficient operation of the ion source is the 2MHz RF impedance matching network. The real part of the antenna impedance is very small and is affected by plasma density for 2MHz operating frequency. Previous impedance matching network for the antenna has limited tuning capability to cover this potential variation of the antenna impedance since it employed a single tuning element and an impedance transformer. A new matching network with two tunable capacitors has been built and tested. This network can allow precision matching and increase the tunable range without using a transformer. A 5-element broadband matching network also has been designed, built and tested. The 5-element network allows wide band matching up to 50 kHz bandwidth from the resonance center of 2 MHz. The design procedure, simulation and test results are presented.

  17. Houston LDAR II network: design, operation, and performance analysis 

    E-Print Network [OSTI]

    Ely, Brandon Lee

    2008-10-10

    antenna’s minimum detectable signal in dBm. ……………….……... 46 5.9 Example showing the method of integration used to estimate network detection efficiency. ………………………...……………………….. 49 6.1 Histograms of c2 values for 6, 7 & 8 sensor solutions fitted...-to-ground and intracloud) structure of thunderstorms and evolution in time. In addition, the Houston LDAR network’s location opens researchers to the opportunity to study the lightning structure of a wide variety of storm types from mesoscale convective systems (MCSs...

  18. Physical Layer Driven Protocol and Algorithm Design for Energy-Efficient Wireless Sensor Networks

    E-Print Network [OSTI]

    Han, Richard Y.

    Physical Layer Driven Protocol and Algorithm Design for Energy-Efficient Wireless Sensor Networks applications in- volving wireless sensor networks require long system lifetimes and fault-tolerance, energy attention. For the most part, this is due to the compelling applications that will be enabled once wireless

  19. WSN-SA: Design Foundations for Situational Awareness Systems Based on Sensor Networks

    E-Print Network [OSTI]

    Liu, Mingyan

    WSN-SA: Design Foundations for Situational Awareness Systems Based on Sensor Networks Agnelo R EE - Electrophysics Univ. of Southern California Los Angeles, CA Email: mahta@usc.edu Abstract--WSN-SA is a Wireless Sensor Networks (WSN) framework that is been proposed to support rescue operations in collapsed

  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. Efficiency-Driven Design Time Optimization of a Hybrid Energy Storage System with Networked Charge Transfer

    E-Print Network [OSTI]

    Pedram, Massoud

    Efficiency-Driven Design Time Optimization of a Hybrid Energy Storage System with Networked Charge efficiency for various problem setups and scales. Keywords--hybrid energy storage system; networked charge transfer interconnect; placement I. INTRODUCTION Energy storage systems (ESSs) store the excess energy

  2. Failure recovery for structured p2p networks: Protocol design and performance under churn q

    E-Print Network [OSTI]

    Lam, Simon S.

    Failure recovery for structured p2p networks: Protocol design and performance under churn q Simon S,000 s of simulated time. In each such ``churn'' experiment, we took a ``snapshot'' of neighbor tables in the network of the churn rate, timeout value in failure recovery, and K. We found our protocols to be effective, efficient

  3. Heuristic Approaches to Energy-Efficient Network Design Problem Cigdem Sengul Robin Kravets

    E-Print Network [OSTI]

    Kravets, Robin

    Heuristic Approaches to Energy-Efficient Network Design Problem Cigdem Sengul Robin Kravets@cs.uiuc.edu Abstract Energy management remains a critical problem in wire- less networks since battery technology cannot keep up with rising communication expectations. Current approaches to energy conservation reduce

  4. Mobile Access of Wide-Spectrum Networks: Design, Deployment and Experimental Evaluation

    E-Print Network [OSTI]

    Knightly, Edward W.

    --Wireless networks increasingly utilize diverse spec- tral bands that exhibit vast differences in both transmissionMobile Access of Wide-Spectrum Networks: Design, Deployment and Experimental Evaluation Anastasios Giannoulis Paul Patras Edward W. Knightly Dept. of Electrical and Computer Engineering, Rice University

  5. Models and solution approaches for intermodal and less-than-truckload network design with load consolidations 

    E-Print Network [OSTI]

    Agrahari, Homarjun

    2009-05-15

    Logistics and supply chain problems arising in the context of intermodal transportation and less-than-truckload (LTL) network design typically require commodities to be consolidated and shipped via the most economical route ...

  6. Multi-server buffer allocation Smith, Cruz, & van Woensel Topological Network Design of General,

    E-Print Network [OSTI]

    Cruz, Frederico

    . §Department of Technology Management, Operations, Planning, Accounting & Control, Eindhoven University the series, merge, and splitting topologies. Keywords -- Manufacturing; multi-server systems; network design physical systems such as manufacturing facilities, telecommunications, and transportation. Traditionally

  7. Cross-Layer Design of Outage Optimum Routing Metric for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2011-01-01

    PAPER Cross-layer design of outage optimum routing metricof wireless ad hoc network outage probability in a fadingJ. J. Garcia-Luna-Aceves Outage optimum routing for wireless

  8. WIND: A Tool for Capacity-constrained Design of Resilient Multi-tier Wireless Mesh Networks

    E-Print Network [OSTI]

    Iyer, Sridhar

    Deployment tool (WIND), uses an MILP solver (CPLEX) to generate topologies with varying parameters (theWIND: A Tool for Capacity-constrained Design of Resilient Multi-tier Wireless Mesh Networks

  9. On the Effectiveness of Source Throttling for Networks-on-Chip in Chip Multiprocessor Designs 

    E-Print Network [OSTI]

    Ni, Ruixiao

    2014-01-09

    In modern chip-multiprocessor (CMP) designs, with the increasing number of cores, traffic between different cores keeps increasing. Consequently, on-chip interconnection networks experience increasingly large communication ...

  10. Logistics Network Design with Differentiated Delivery Lead-Time: Benefits and Insights

    E-Print Network [OSTI]

    Cheong, Michelle L.F.

    Most logistics network design models assume exogenous customer demand that is independent of the service time or level. This paper examines the benefits of segmenting demand according to lead-time sensitivity of customers. ...

  11. NGNP Nuclear-Industrial Facility and Design Certification Boundaries White Paper

    SciTech Connect (OSTI)

    Thomas E. Hicks

    2011-07-01

    The Next Generation Nuclear Plant (NGNP) Project was initiated at Idaho National Laboratory by the U.S. Department of Energy pursuant to the 2005 Energy Policy Act and based on research and development activities supported by the Generation IV Nuclear Energy Systems Initiative. The principal objective of the NGNP Project is to support commercialization of the high temperature gas-cooled reactor (HTGR) technology. The HTGR is helium cooled and graphite moderated and can operate at reactor outlet temperatures much higher than those of conventional light water reactor (LWR) technologies. Accordingly, it can be applied in many industrial applications as a substitute for burning fossil fuels, such as natural gas, in addition to producing electricity, which is the principal application of current LWRs. These varied industrial applications may involve a standard HTGR modular design using different Energy Conversion Systems. Additionally, some of these process heat applications will require process heat delivery systems to lie partially outside the HTGR operator’s facility.

  12. Efficient Design and Clocking for a Network-on-Chip 

    E-Print Network [OSTI]

    Mandal, Ayan

    2013-05-02

    As VLSI fabrication technology scales, an increasing number of processing elements (cores) on a chip makes on-chip communication a new performance bottleneck. The Network-on-Chip (NoC) paradigm has emerged as an efficient ...

  13. Design, Simulation, and Analysis of Substation Automation Networks 

    E-Print Network [OSTI]

    Kembanur Natarajan, Elangovan

    2012-07-16

    modern local and wide area communication networks for improving reliability and performance in critical infrastructures. Emerging critical infrastructure applications, such as smart grid, require a certain degree of reliability and Quality of Service (Qo...

  14. Design of Network Architectures: Role of Game Theory and Economics

    E-Print Network [OSTI]

    Shetty, Nikhil

    2010-01-01

    missing markets for cyber-security insurance. The studyS. Raghunathan, Cyber insurance and it security investment:on the eects of cyber-insurers on network security and user

  15. Worst-Case Analysis of Network Design Problem Heuristics

    E-Print Network [OSTI]

    Wong, Richard T.

    The Optimal Network problem (as defined by Scott [16]) consists of selecting a subset of arcs that minimizes the sum of the shortest paths between all nodes subject to a budget constraint. This paper considers the worst-case ...

  16. Design and analysis of optical flow switched networks

    E-Print Network [OSTI]

    Weichenberg, Guy E. (Guy Elli), 1978-

    2009-01-01

    In the four decades since optical fiber was introduced as a communications medium, optical networking has revolutionized the telecommunications landscape. It has enabled the Internet as we know it today, and is central to ...

  17. Designing optimal greenhouse gas observing networks that consider performance and cost

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

    Lucas, D. D.; Yver Kwok, C.; Cameron-Smith, P.; Graven, H.; Bergmann, D.; Guilderson, T. P.; Weiss, R.; Keeling, R.

    2014-12-23

    Emission rates of greenhouse gases (GHGs) entering into the atmosphere can be inferred using mathematical inverse approaches that combine observations from a network of stations with forward atmospheric transport models. Some locations for collecting observations are better than others for constraining GHG emissions through the inversion, but the best locations for the inversion may be inaccessible or limited by economic and other non-scientific factors. We present a method to design an optimal GHG observing network in the presence of multiple objectives that may be in conflict with each other. As a demonstration, we use our method to design a prototypemore »network of six stations to monitor summertime emissions in California of the potent GHG 1,1,1,2-tetrafluoroethane (CH2FCF3, HFC-134a). We use a multiobjective genetic algorithm to evolve network configurations that seek to jointly maximize the scientific accuracy of the inferred HFC-134a emissions and minimize the associated costs of making the measurements. The genetic algorithm effectively determines a set of "optimal" observing networks for HFC-134a that satisfy both objectives (i.e., the Pareto frontier). The Pareto frontier is convex, and clearly shows the tradeoffs between performance and cost, and the diminishing returns in trading one for the other. Without difficulty, our method can be extended to design optimal networks to monitor two or more GHGs with different emissions patterns, or to incorporate other objectives and constraints that are important in the practical design of atmospheric monitoring networks.« less

  18. Designing optimal greenhouse gas observing networks that consider performance and cost

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

    Lucas, D. D.; Yver Kwok, C.; Cameron-Smith, P.; Graven, H.; Bergmann, D.; Guilderson, T. P.; Weiss, R.; Keeling, R.

    2015-06-16

    Emission rates of greenhouse gases (GHGs) entering into the atmosphere can be inferred using mathematical inverse approaches that combine observations from a network of stations with forward atmospheric transport models. Some locations for collecting observations are better than others for constraining GHG emissions through the inversion, but the best locations for the inversion may be inaccessible or limited by economic and other non-scientific factors. We present a method to design an optimal GHG observing network in the presence of multiple objectives that may be in conflict with each other. As a demonstration, we use our method to design a prototypemore »network of six stations to monitor summertime emissions in California of the potent GHG 1,1,1,2-tetrafluoroethane (CH2FCF3, HFC-134a). We use a multiobjective genetic algorithm to evolve network configurations that seek to jointly maximize the scientific accuracy of the inferred HFC-134a emissions and minimize the associated costs of making the measurements. The genetic algorithm effectively determines a set of "optimal" observing networks for HFC-134a that satisfy both objectives (i.e., the Pareto frontier). The Pareto frontier is convex, and clearly shows the tradeoffs between performance and cost, and the diminishing returns in trading one for the other. Without difficulty, our method can be extended to design optimal networks to monitor two or more GHGs with different emissions patterns, or to incorporate other objectives and constraints that are important in the practical design of atmospheric monitoring networks.« less

  19. Optimal Topology Design in Wireless Personal Area Networks

    E-Print Network [OSTI]

    that are typically battery-powered, i.e., that have limited energy resources, and have a limited transmission range a crucial impact on the traffic load distribution within the WPAN, and on the nodes energy consumption. For instance, un- der the assumption that the offered traffic is uniformly distributed among the network nodes

  20. 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

  1. Combinatorial structures for Design of Wireless Sensor Networks

    E-Print Network [OSTI]

    Seberry, Jennifer

    of Radio Waves Affect Networking Capabilities An ideal radio wave for wireless technologies should have high speed, travel far distances and consume little energy. Had such radio waves existed, it would have power. Unfortunately, real radio waves do not behave like that. The high speed and long range of a radio

  2. The Design and Implementation of Declarative Networks Boon Thau Loo

    E-Print Network [OSTI]

    Ives, Zachary G.

    has been a role model and an incredible advisor throughout my years at Berkeley. I met Joe eight years-fledged declarative networking system that compiles NDlog and executes it via a dataflow engine inspired by the Click modular router. We experimentally evaluate the P2 system on hundreds of distributed machines. The P2

  3. Stochastic Network Design in Bidirected Trees Xiaojian Wu1

    E-Print Network [OSTI]

    Sheldon, Daniel R.

    , and primal-dual heuristics [6, 11­13], none of which provide both scalable running-time and optimality scheme (FPTAS), that is, an algorithm that can find (1- )-optimal solutions for any problem instance on a motivating problem from computational sustainability to remove barriers in river networks to restore

  4. GENERAL SUPERSTRUCTURE AND GLOBAL OPTIMIZATION FOR THE DESIGN OF INTEGRATED PROCESS WATER NETWORKS

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    ), and Foo (2009). Water pinch technology relies on graphic representations and it is based on an extension.E. Grossmann). #12;2 The two major approaches for the optimal design of water network systems are water pinch1 GENERAL SUPERSTRUCTURE AND GLOBAL OPTIMIZATION FOR THE DESIGN OF INTEGRATED PROCESS WATER

  5. Energy-efficient wireless communication net-work design is an important and challenging

    E-Print Network [OSTI]

    ABSTRACT Energy-efficient wireless communication net- work design is an important and challenging and perfor- mance. INTRODUCTION Energy-efficient wireless communication net- work design is an important, and optimization of wireless communication networks that achieves maximum performance under an energy constraint

  6. Design and Analysis of a Wireless Nanosensor Network for Monitoring Human Lung Cells

    E-Print Network [OSTI]

    New South Wales, University of

    Design and Analysis of a Wireless Nanosensor Network for Monitoring Human Lung Cells Eisa Zarepour one day. In this paper, we design and analyse a WNSN for monitoring human lung cells. We find that influences the terahertz channel inside lung cells. The channel is characterised as a two-state channel

  7. Neural network based design of cellular manufacturing systems 

    E-Print Network [OSTI]

    Ramachandran, Satheesh

    1990-01-01

    , India Chair of Advisory Committee: Dr. Cesar O. Malave A neural network based on a competitive learning rule when trained with the part machine incidence matrix of a large number of parts classifies the parts and machines into part families... and machine cells respectively. This classification compares well with the classical clustering techniques. The steady state values of the activations and interconnecting strengths enables easier identification of the part families, machine cells...

  8. Multiscale Modeling of Grain Boundary Segregation and Embrittlement in Tungsten for Mechanistic Design of Alloys for Coal Fired Plants

    SciTech Connect (OSTI)

    Luo, Jian; Tomar, Vikas; Zhou, Naixie; Lee, Hongsuk

    2013-06-30

    Based on a recent discovery of premelting-like grain boundary segregation in refractory metals occurring at high temperatures and/or high alloying levels, this project investigated grain boundary segregation and embrittlement in tungsten (W) based alloys. Specifically, new interfacial thermodynamic models have been developed and quantified to predict high-temperature grain boundary segregation in the W-Ni binary alloy and W-Ni-Fe, W-Ni-Ti, W-Ni-Co, W-Ni-Cr, W-Ni-Zr and W-Ni-Nb ternary alloys. The thermodynamic modeling results have been experimentally validated for selected systems. Furthermore, multiscale modeling has been conducted at continuum, atomistic and quantum-mechanical levels to link grain boundary segregation with embrittlement. In summary, this 3-year project has successfully developed a theoretical framework in combination with a multiscale modeling strategy for predicting grain boundary segregation and embrittlement in W based alloys.

  9. Green optical network design : power optimization of wide area and metropolitan area networks

    E-Print Network [OSTI]

    Lin, Katherine Xiaoyan

    2011-01-01

    Advancements in technology are fueling huge growth in network traffic capacity. Demand for low cost, reliable, and high bitrate transmissions grows 40-110% internationally every year. To date, most research has focused on ...

  10. Networking vendor strategy and competition and their impact on enterprise network design and implementation

    E-Print Network [OSTI]

    Fung, Ray

    2006-01-01

    While a significant amount of literature exists that discuss platform strategies used by general IT vendors, less of it has to do with corporate networking technology vendors specifically. However, many of the same strategic ...

  11. Design and development of a network architecture for a chemical sensor network

    E-Print Network [OSTI]

    Cheung, Jimmy

    2005-01-01

    A real-time continuous chemical sensor network can obtain detailed data to analyze the dynamic behavior of water systems such as a lake. The behaviors of interest to us in Upper Mystic Lake are the effects of stratification ...

  12. Decentralized Coherent Quantum Control Design for Translation Invariant Linear Quantum Stochastic Networks with Direct Coupling

    E-Print Network [OSTI]

    Arash Kh. Sichani; Igor G. Vladimirov; Ian R. Petersen

    2015-09-07

    This paper is concerned with coherent quantum control design for translation invariant networks of identical quantum stochastic systems subjected to external quantum noise. The network is modelled as an open quantum harmonic oscillator and is governed by a set of linear quantum stochastic differential equations. The dynamic variables of this quantum plant satisfy the canonical commutation relations. Similar large-scale systems can be found, for example, in quantum metamaterials and optical lattices. The problem under consideration is to design a stabilizing decentralized coherent quantum controller in the form of another translation invariant quantum system, directly coupled to the plant, so as to minimize a weighted mean square functional of the dynamic variables of the interconnected networks. We consider this problem in the thermodynamic limit of infinite network size and present first-order necessary conditions for optimality of the controller.

  13. Benefits of Considering Inventory in Service Parts Logistics Network Design Problems with Time-based Service Constraints

    E-Print Network [OSTI]

    Kutanoglu, Erhan

    Benefits of Considering Inventory in Service Parts Logistics Network Design Problems with Time, 2006 Abstract We study the integrated logistics network design and inventory stocking problem as char- acterized by the interdependency of the design and stocking decisions in service parts logistics. These two

  14. Benefits of Considering Inventory in Service Parts Logistics Network Design Problems with Time-based Service Constraints

    E-Print Network [OSTI]

    Kutanoglu, Erhan

    Benefits of Considering Inventory in Service Parts Logistics Network Design Problems with Time 18, 2005 Abstract We study the integrated logistics network design and inventory stocking problem as char- acterized by the interdependency of the design and stocking decisions in service parts logistics

  15. Design and initial deployment of the wireless local area networking infrastructure at Sandia National Laboratories.

    SciTech Connect (OSTI)

    Long, John P.; Hamill, Michael J.; Mitchell, M. G.; Miller, Marc M.; Witzke, Edward L.; Wiener, Dallas J

    2006-11-01

    A major portion of the Wireless Networking Project at Sandia National Laboratories over the last few years has been to examine IEEE 802.11 wireless networking for possible use at Sandia and if practical, introduce this technology. This project team deployed 802.11a, b, and g Wireless Local Area Networking at Sandia. This report examines the basics of wireless networking and captures key results from project tests and experiments. It also records project members thoughts and designs on wireless LAN architecture and security issues. It documents some of the actions and milestones of this project, including pilot and production deployment of wireless networking equipment, and captures the team's rationale behind some of the decisions made. Finally, the report examines lessons learned, future directions, and conclusions.

  16. The Science DMZ: A Network Design Pattern for Data-Intensive Science

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

    Dart, Eli; Rotman, Lauren; Tierney, Brian; Hester, Mary; Zurawski, Jason

    2014-01-01

    The ever-increasing scale of scientific data has become a significant challenge for researchers that rely on networks to interact with remote computing systems and transfer results to collaborators worldwide. Despite the availability of high-capacity connections, scientists struggle with inadequate cyberinfrastructure that cripples data transfer performance, and impedes scientific progress. The Science DMZ paradigm comprises a proven set of network design patterns that collectively address these problems for scientists. We explain the Science DMZ model, including network architecture, system configuration, cybersecurity, and performance tools, that creates an optimized network environment for science. We describe use cases from universities, supercomputing centersmore »and research laboratories, highlighting the effectiveness of the Science DMZ model in diverse operational settings. In all, the Science DMZ model is a solid platform that supports any science workflow, and flexibly accommodates emerging network technologies. As a result, the Science DMZ vastly improves collaboration, accelerating scientific discovery. « less

  17. The Science DMZ: A Network Design Pattern for Data-Intensive Science

    SciTech Connect (OSTI)

    Dart, Eli; Rotman, Lauren; Tierney, Brian; Hester, Mary; Zurawski, Jason

    2013-08-13

    The ever-increasing scale of scientific data has become a significant challenge for researchers that rely on networks to interact with remote computing systems and transfer results to collaborators worldwide. Despite the availability of high-capacity connections, scientists struggle with inadequate cyberinfrastructure that cripples data transfer performance, and impedes scientific progress. The Science DMZ paradigm comprises a proven set of network design patterns that collectively address these problems for scientists. We explain the Science DMZ model, including network architecture, system configuration, cybersecurity, and performance tools, that creates an optimized network environment for science. We describe use cases from universities, supercomputing centers and research laboratories, highlighting the effectiveness of the Science DMZ model in diverse operational settings. In all, the Science DMZ model is a solid platform that supports any science workflow, and flexibly accommodates emerging network technologies. As a result, the Science DMZ vastly improves collaboration, accelerating scientific discovery.

  18. A Comparison of Electricity Market Designs in Networks

    E-Print Network [OSTI]

    Ehrenmann, A; Neuhoff, Karsten

    2004-06-16

    . Harvey, Hogan and Pope (1996) suggested that the separated market design will exhibit inefficiencies when there is uncertainty, which can be empirically shown by the example of the German-Dutch interconnector (see Neuhoff 2003). These claims to efficiency...

  19. Design and analysis of an ATM network traffic security device 

    E-Print Network [OSTI]

    Teodor, Dan Cristian

    1997-01-01

    for that connection. This result will be used by the sequence / detect module to determine if the cell is valid or noh If the cell is valid, it will enable the output from the last set of latches in the 16-bit shiit register to be sent out to the transmitter... switch has a direct physical connection (by whatever physical medium chosen). Switch to switch routing in an ATM network is performed based on local information at every switch in which a given cell amves. This local information is stored in a look...

  20. Heat Exchanger Network Targeting, Design and Analysis: The MIDAS Package 

    E-Print Network [OSTI]

    Barton, I.; Jones, D. H.; Smith, G. J.

    1987-01-01

    stream_source_info ESL-IE-87-09-07.pdf.txt stream_content_type text/plain stream_size 30705 Content-Encoding ISO-8859-1 stream_name ESL-IE-87-09-07.pdf.txt Content-Type text/plain; charset=ISO-8859-1 HEAT EXCHANGER... of heat exchanger networks (HENs) has focused on the production of powerful, user-friendly software. Advanced optimization techniques, such as mixed integer non linear programming, have been added to established pinch procedures to increase...

  1. Seal inlet disturbance boundary conditions for rotordynamic models and influence of some off-design conditions on labyrinth rotordynamic instability 

    E-Print Network [OSTI]

    Xi, Jinxiang

    2007-04-25

    Systematic parametric studies were performed to better understand seal-inlet rotordynamics. A CFD-perturbation model was employed to compute the seal-inlet flow disturbance quantities. Seal inlet disturbance boundary ...

  2. Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational

    E-Print Network [OSTI]

    Nagurney, Anna

    importance of considering waste management. Anna Nagurney and Ladimer S. Nagurney Medical Nuclear SupplyMedical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna Nagurney1 and Ladimer S. Nagurney2 1John F. Smith Memorial Professor - Isenberg School of Management

  3. Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach

    E-Print Network [OSTI]

    Nagurney, Anna

    operational cost minimization, and the minimization of cost associated with nuclear waste discarding, coupled, the underlying physics of radioactive decay, and the inclusion of waste management. We focus on Molybdenum-99 dueMedical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna

  4. Limits and Opportunities for Designing Manycore Processor-to-Memory Networks using Monolithic Silicon Photonics

    E-Print Network [OSTI]

    Batten, Christopher

    can be much higher than the static energy cost of electrical links. Hence, networks designed using. Here, the data gets converted from elec- trical to optical medium. The modulated light waves travel and are absorbed using a photodetector that converts light into current, which is then fed to the electrical

  5. Designed for Work, but not from Here: Rural and Remote Perspectives on Networked Technology

    E-Print Network [OSTI]

    in rural and remote communities. Our findings indicate that work in these areas increasingly dependsDesigned for Work, but not from Here: Rural and Remote Perspectives on Networked Technology Roberta enjoy full speed, always available, broadband access, those in rural and remote environments do

  6. DESIGNING A REAL TIME SYSTEM FOR CAR NUMBER DETECTION USING DISCRETE HOPFIELD NETWORK

    E-Print Network [OSTI]

    Mishra, Prabhat

    DESIGNING A REAL TIME SYSTEM FOR CAR NUMBER DETECTION USING DISCRETE HOPFIELD NETWORK A.BANERJEE1@yahoo.co.in Abstract The paper addresses a novel scheme for detection of car numbers from its rear end number plates. The work has extensive applications in automatic identification of cars, responsible for Cox pollution

  7. Bio-energy Logistics Network Design Under Price-based Supply and Yield Uncertainty 

    E-Print Network [OSTI]

    Memisoglu, Gokhan

    2014-12-10

    In this dissertation, we study the design and planning of bio-energy supply chain networks. This dissertation consists of 3 studies that focus on different aspects of bio-energy supply chain systems. In the first study, we consider planning...

  8. Design Considerations for a Large-Scale Wireless Sensor Network for Substation Monitoring

    E-Print Network [OSTI]

    Nasipuri, Asis

    effective monitoring applications for the substation using low-cost wireless sensor nodes that can sustainDesign Considerations for a Large-Scale Wireless Sensor Network for Substation Monitoring Asis University City Blvd. Charlotte, NC 28223 Luke Van der Zel and Bienvenido Rodriguez Substations Group EPRI

  9. Demo Abstract: Wireless Sensor Network for Substation Monitoring: Design and Deployment

    E-Print Network [OSTI]

    Nasipuri, Asis

    -voltage substations, lower installation cost, and utilization of the distributed pro- cessing capabilities of wirelessDemo Abstract: Wireless Sensor Network for Substation Monitoring: Design and Deployment Asis-Transmissions & Substations 9625 Research Drive Charlotte, NC 28262 {lvanderz,birodriguez} @epri.com Ralph McKosky, Joseph

  10. The Syntax and Semantics of a DomainSpecific Language for FlowNetwork Design #

    E-Print Network [OSTI]

    encompasses streams of physical entities (e.g., vehicles on a road, fluid in a pipe), data objects (e.g., sensor network packets, video frames), or consumable resources (e.g., electric energy, compute cycles alternative can be viewed as a horizontal and incremental approach to system design and implementation, which

  11. Strategic Planning, Design and Development of the Shale Gas Supply Chain Network

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Strategic Planning, Design and Development of the Shale Gas Supply Chain Network Diego C. Cafaro1-term planning of the shale gas supply chain is a relevant problem that has not been addressed before Shale gas, supply chain, strategic planning, MINLP, solution algorithm * Corresponding author. Tel.: +1

  12. Design and analysis of distributed primitives for mobile ad hoc networks 

    E-Print Network [OSTI]

    Chen, Yu

    2006-10-30

    by the network, which poses a serious challenge for the design and analysis of reliable protocols. In this work, three different approaches are used to handle mobility. The first part of the dissertation employs the simple technique of ignoring the mobility...

  13. The Design and Performance of SpaceWire Router-network using CSP

    E-Print Network [OSTI]

    Fukunaga, Chikara

    The Design and Performance of SpaceWire Router-network using CSP Session:Components Short Paper the point of view of robustness and security using CSP (Communication Sequential Processes) method, one Correspondong author:fukunaga@tmu.ac.jp 1 Occam has been originally developed by Inmos Limited inspired by CSP[3

  14. On the Price of Stability for Designing Undirected Networks with Fair Cost Allocations

    E-Print Network [OSTI]

    Shamir, Ron

    On the Price of Stability for Designing Undirected Networks with Fair Cost Allocations Amos Fiat the cost of the least expensive Nash equilibria and the cost of the social optimum. The price of stability-Aviv University,Israel Abstract. In this paper we address the open problem of bounding the price of stability

  15. Design and Implementation of a Wireless Sensor Network for Smart Homes

    E-Print Network [OSTI]

    Xu, Ming; Xia, Feng; Yuan, Tengkai; Qian, Jixin; Shao, Meng

    2010-01-01

    Wireless sensor networks (WSNs) have become indispensable to the realization of smart homes. The objective of this paper is to develop such a WSN that can be used to construct smart home systems. The focus is on the design and implementation of the wireless sensor node and the coordinator based on ZigBee technology. A monitoring system is built by taking advantage of the GPRS network. To support multi-hop communications, an improved routing algorithm based on the Dijkstra algorithm is presented. Preliminary simulations have been conducted to evaluate the performance of the algorithm.

  16. Droplet traffic in microfluidic networks: A simple model for understanding and designing

    E-Print Network [OSTI]

    M. Schindler; A. Ajdari

    2007-12-20

    We propose a simple model to analyze the traffic of droplets in microfluidic ``dual networks''. Such functional networks which consist of two types of channels, namely those accessible or forbidden to droplets, often display a complex behavior characteristic of dynamical systems. By focusing on three recently proposed configurations, we offer an explanation for their remarkable behavior. Additionally, the model allows us to predict the behavior in different parameter regimes. A verification will clarify fundamental issues, such as the network symmetry, the role of the driving conditions, and of the occurrence of reversible behavior. The model lends itself to a fast numerical implementation, thus can help designing devices, identifying parameter windows where the behavior is sufficiently robust for a devices to be practically useful, and exploring new functionalities.

  17. Model Based Optimal Sensor Network Design for Condition Monitoring in an IGCC Plant

    SciTech Connect (OSTI)

    Kumar, Rajeeva; Kumar, Aditya; Dai, Dan; Seenumani, Gayathri; Down, John; Lopez, Rodrigo

    2012-12-31

    This report summarizes the achievements and final results of this program. The objective of this program is to develop a general model-based sensor network design methodology and tools to address key issues in the design of an optimal sensor network configuration: the type, location and number of sensors used in a network, for online condition monitoring. In particular, the focus in this work is to develop software tools for optimal sensor placement (OSP) and use these tools to design optimal sensor network configuration for online condition monitoring of gasifier refractory wear and radiant syngas cooler (RSC) fouling. The methodology developed will be applicable to sensing system design for online condition monitoring for broad range of applications. The overall approach consists of (i) defining condition monitoring requirement in terms of OSP and mapping these requirements in mathematical terms for OSP algorithm, (ii) analyzing trade-off of alternate OSP algorithms, down selecting the most relevant ones and developing them for IGCC applications (iii) enhancing the gasifier and RSC models as required by OSP algorithms, (iv) applying the developed OSP algorithm to design the optimal sensor network required for the condition monitoring of an IGCC gasifier refractory and RSC fouling. Two key requirements for OSP for condition monitoring are desired precision for the monitoring variables (e.g. refractory wear) and reliability of the proposed sensor network in the presence of expected sensor failures. The OSP problem is naturally posed within a Kalman filtering approach as an integer programming problem where the key requirements of precision and reliability are imposed as constraints. The optimization is performed over the overall network cost. Based on extensive literature survey two formulations were identified as being relevant to OSP for condition monitoring; one based on LMI formulation and the other being standard INLP formulation. Various algorithms to solve these two formulations were developed and validated. For a given OSP problem the computation efficiency largely depends on the “size” of the problem. Initially a simplified 1-D gasifier model assuming axial and azimuthal symmetry was used to test out various OSP algorithms. Finally these algorithms were used to design the optimal sensor network for condition monitoring of IGCC gasifier refractory wear and RSC fouling. The sensors type and locations obtained as solution to the OSP problem were validated using model based sensing approach. The OSP algorithm has been developed in a modular form and has been packaged as a software tool for OSP design where a designer can explore various OSP design algorithm is a user friendly way. The OSP software tool is implemented in Matlab/Simulink© in-house. The tool also uses few optimization routines that are freely available on World Wide Web. In addition a modular Extended Kalman Filter (EKF) block has also been developed in Matlab/Simulink© which can be utilized for model based sensing of important process variables that are not directly measured through combining the online sensors with model based estimation once the hardware sensor and their locations has been finalized. The OSP algorithm details and the results of applying these algorithms to obtain optimal sensor location for condition monitoring of gasifier refractory wear and RSC fouling profile are summarized in this final report.

  18. The Precision and Energetic Cost of Snapshot Estimates in Wireless Sensor Networks

    E-Print Network [OSTI]

    of the estimate and (2) in the reporting of the sample data via wireless networking. The energy requiredThe Precision and Energetic Cost of Snapshot Estimates in Wireless Sensor Networks Paul G. Flikkema, the design space of wireless sensor networks is enormous, and traditional disciplinary boundaries

  19. Energy-efficient adaptive wireless network design Paul J.M. Havinga, Gerard J.M. Smit, Martinus Bos

    E-Print Network [OSTI]

    Havinga, Paul J.M.

    Energy-efficient adaptive wireless network design Paul J.M. Havinga, Gerard J.M. Smit, Martinus Bos.bos}@cs.utwente.nl Abstract Energy efficiency is an important issue for mobile computers since they must rely on their batteries. We present an energy-efficient highly adaptive architecture of a network interface and novel data

  20. On optimizing wireless mesh networks : from theoretical capacity analysis to practical algorithm design

    E-Print Network [OSTI]

    Zhou, Ping

    2008-01-01

    and et al, "Low-energy wireless communication networkT.H. Meng, “Minimun energy mobile wireless networks,” IEEE46] Ephremides, "Energy concerns in wireless networks," IEEE

  1. Open Control Networking Systems for Smarter Building Operations-Fundamentals of System Architecture and Design 

    E-Print Network [OSTI]

    Gibson, M.

    2011-01-01

    Logo www.lonmark.org ICEBO Oct 18-20, 2011 LONMARK Purpose ? To?promote?interoperable?products?and?collaborative? marketing?programs ? To?provide?a?forum?to?define?application?specific?design? requirements ? To?create?market?demand?for?open,?interoperable?systems... stream_source_info ESL-IC-11-10-48.pdf.txt stream_content_type text/plain stream_size 18007 Content-Encoding ISO-8859-1 stream_name ESL-IC-11-10-48.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Open?Control?Networking?Systems...

  2. Abstract -This paper introduces techniques for power efficient design of power delivery network in multiple voltage-island

    E-Print Network [OSTI]

    Pedram, Massoud

    in multiple voltage-island System-on-Chip (SoC) designs. The first technique is targeted to SoC designs network, voltage regulator, DC-DC converter, energy efficiency, voltage island, system-on-chip I island approach [3]. In these systems, it is required that the PDN delivers power at appropriate voltage

  3. Securing against fraud in mobile communications : system design and development in 3G mobile networks

    E-Print Network [OSTI]

    Mochizuki, Yujiro, 1973-

    2006-01-01

    Network security ensures the consistency, integrity, and reliability of telecommunications systems. Authorized network access prevents fraudulent communications and maintains the availability of the systems. However, limited ...

  4. On optimizing wireless mesh networks : from theoretical capacity analysis to practical algorithm design

    E-Print Network [OSTI]

    Zhou, Ping

    2008-01-01

    Transmission Strategies for Wireless Devices,” in Proc. ofand Power Control for Wireless Ad-hoc Networks," in Proc. offor ad hoc mobile wireless networks," IEEE Personal

  5. Design and analysis of a mesh-based wireless network-on-chip

    E-Print Network [OSTI]

    Hu, WH; Wang, C; Bagherzadeh, N

    2015-01-01

    find optimal locations for wireless routers. Cycle-accuratearchitecture. Keywords Wireless network-on-chip · Network-find optimal locations for wireless routers so that inter-

  6. Network design optimization of fuel cell systems and distributed energy devices.

    SciTech Connect (OSTI)

    Colella, Whitney G.

    2010-07-01

    This research explores the thermodynamics, economics, and environmental impacts of innovative, stationary, polygenerative fuel cell systems (FCSs). Each main report section is split into four subsections. The first subsection, 'Potential Greenhouse Gas (GHG) Impact of Stationary FCSs,' quantifies the degree to which GHG emissions can be reduced at a U.S. regional level with the implementation of different FCS designs. The second subsection, 'Optimizing the Design of Combined Heat and Power (CHP) FCSs,' discusses energy network optimization models that evaluate novel strategies for operating CHP FCSs so as to minimize (1) electricity and heating costs for building owners and (2) emissions of the primary GHG - carbon dioxide (CO{sub 2}). The third subsection, 'Optimizing the Design of Combined Cooling, Heating, and Electric Power (CCHP) FCSs,' is similar to the second subsection but is expanded to include capturing FCS heat with absorptive cooling cycles to produce cooling energy. The fourth subsection, - Thermodynamic and Chemical Engineering Models of CCHP FCSs,' discusses the physics and thermodynamic limits of CCHP FCSs.

  7. PHY and MAC Layer Design of Hybrid Spread Spectrum Based Smart Meter Network

    SciTech Connect (OSTI)

    Kuruganti, Phani Teja

    2012-01-01

    The smart grid is a combined process of revitalizing the traditional power grid applications and introducing new applications to improve the efficiency of power generation, transmission and distribution. This can be achieved by leveraging advanced communication and networking technologies. Therefore the selection of the appropriate communication technology for different smart grid applications has been debated a lot in the recent past. After comparing different possible technologies, a recent research study has arrived at a conclusion that the 3G cellular technology is the right choice for distribution side smart grid applications like smart metering, advanced distribution automation and demand response management system. In this paper, we argue that the current 3G/4G cellular technologies are not an appropriate choice for smart grid distribution applications and propose a Hybrid Spread Spectrum (HSS) based Advanced Metering Infrastructure (AMI) as one of the alternatives to 3G/4G technologies. We present a preliminary PHY and MAC layer design of a HSS based AMI network and evaluate their performance using matlab and NS2 simulations. Also, we propose a time hierarchical scheme that can significantly reduce the volume of random access traffic generated during blackouts and the delay in power outage reporting.

  8. 173Bailey: Design ofEcologicalNetworksfor Monitoring Global Change Designof Ecological Networks for Monitoring Global Change

    E-Print Network [OSTI]

    Environment Monitoring System (GEMS) of the United Nations Environment Programme, and the US Global Change173Bailey: Design ofEcologicalNetworksfor Monitoring Global Change Designof Ecological Networks for Monitoring Global Change World-wide monitoring of agricultural and other natural-resource ecosystems

  9. MAC Design for Supporting Ultra Low Duty Cycle in Wireless Sensor Networks1 *Wooguil PakO

    E-Print Network [OSTI]

    Bahk, Saewoong

    MAC Design for Supporting Ultra Low Duty Cycle in Wireless Sensor Networks1 *Wooguil PakO , *Hyuk.1%). Our proposed U-MAC (Ultra low duty cycle MAC) protocol targets achieving low energy consumption under. In this paper, we propose a new MAC algorithm called U-MAC (Ultra low duty cycle MAC) that works effectively

  10. Communication and Sensing Trade-Offs in Decentralized Mobile Sensor Networks: A Cross-Layer Design Approach

    E-Print Network [OSTI]

    Mostofi, Yasamin

    Communication and Sensing Trade-Offs in Decentralized Mobile Sensor Networks: A Cross-Layer Design the trade-offs between communication and sensing objectives, by determining the optimal sensor configurations when introducing imperfect communication. We further illustrate the performance degradation caused

  11. A Robust and Flexible Design for GCEP Unattended Online Enrichment Monitoring: An OLEM Collection Node Network

    SciTech Connect (OSTI)

    Younkin, James R; March-Leuba, Jose A; Garner, James R

    2013-01-01

    Oak Ridge National Laoratory (ORNL) has engineered an on-line enrichment monitor (OLEM) to continuously measure U-235 emissions from the UF6 gas flowing through a unit header pipe of a gas centrifuge enrichment plant (GCEP) as a component of the International Atomic Energy Agency s (IAEA) new generation of technology to support enrichment plant safeguards1. In contrast to other enrichment monitoring approaches, OLEM calibrates and corrects for the pressure and temperature dependent UF6 gas-density without external radiation sources by using the inherent unit header pipe pressure dynamics and combining U-235 gamma-ray spectrometery using a shielded NaI detector with gas pressure and temperature data near the spectrum measurement point to obtain the enrichment of the gas as a function of time. From a safeguards perspective, OLEM can provide early detection of a GCEP being misused for production of highly enriched uranium, but would not detect directly the isolation and use of a cascade within the production unit to produce HEU. OLEM may also reduce the number of samples collected for destructive assay and, if coupled with load cell monitoring, could support isotope mass balance verification and unattended cylinder verification. The earlier paper presented OLEM as one component along with shared load cells and unattended cylinder verification, in the IAEA emering toolbox for unattended instruments at GCEPs1 and described the OLEM concept and how previous modeling studies and field measurements helped confirm the viability of a passive on-line enrichment monitor for meeting IAEA objectives and to support the development of performance targets. Phase I of the United States Support Program (USSP) OLEM project completed a preliminary hardware, software and communications design; phase II will build and test field prototypes in controlled laboratory settings and then at an operational facility. That paper also discussed many of the OLEM collection node commercial off the shelf (COTS) components and summarized the OLEM collection node data security provisions. This paper will discuss a secure and redundant network of OLEM collection nodes, auxiliary detection units and supporting junction boxes distributed throughout a facility for monitoring enrichment on product, feed and tails unit header pipes; the purpose and capability of the built-in Electronic Optical Sealing System (EOSS) network gateway; and a network approach for obtaining reliable and authenticated pressure measurements.

  12. Models and Solution Approaches for Efficient Design and Operation of Wireless Sensor Networks 

    E-Print Network [OSTI]

    Lin, Hui 1981-

    2010-11-11

    -renewable energy resources. Many research e orts aim at developing energy e cient network topology and routing schemes for prolonging the network lifetime. However, we notice that, in the majority of the literature, topology control and routing problems are handled...

  13. Bilateral exchanges in social networks and the design of public institutions

    E-Print Network [OSTI]

    Mani, Ankur

    2014-01-01

    In this thesis, I study bilateral exchanges in social networks. I integrate the market based approach in economics and network based approach in sociology. I also give a joint model of externalities and peer pressure in ...

  14. Subsampled DPCM system design for speech transmission over lossy packet networks 

    E-Print Network [OSTI]

    Siddiqui, Aqeel Ahmed

    1995-01-01

    various traffic distributions and patterns, can utilize the network efficiently. This is done through the use of statistical multiplexing. A common feature in packet-switched speech transmission networks is the need to discard packets occasionally...

  15. Principles and Design Considerations for Short-Range Energy Balanced Radar Networks

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    behind "Off- The-Grid" (OTG) weather radar networks. These are envisioned as self-contained networks. Donovan1 , David J. McLaughlin1 , Jim Kurose2 1 Electrical and Computer Engineering, 2 Computer Science of the troposphere that are unobserved by today's long-range weather radars. Future distributed radar networks

  16. Active Network Approach to the Design of Secure Online Auction Systems Basem Shihada and Sampalli Srinivas

    E-Print Network [OSTI]

    Shihada, Basem

    authentication and authorization, bid validation and bid data encryption. This paper presents a novel approach and authorization, bid validation and bid data encryption. 1.1 Active Networks Active networking is a new networking} @cs.dal.ca ABSTRACT Online auction systems require high-speed bid transmission, large bandwidth

  17. A distributed boundary detection algorithm for multi-robot systems

    E-Print Network [OSTI]

    McLurkin, James

    We describe a distributed boundary detection algorithm suitable for use on multi-robot systems with dynamic network topologies. We assume that each robot has access to its local network geometry, which is the combination ...

  18. A supply chain network design model for biomass co-firing in coal-fired power plants

    SciTech Connect (OSTI)

    Md. S. Roni; Sandra D. Eksioglu; Erin Searcy; Krishna Jha

    2014-01-01

    We propose a framework for designing the supply chain network for biomass co-firing in coal-fired power plants. This framework is inspired by existing practices with products with similar physical characteristics to biomass. We present a hub-and-spoke supply chain network design model for long-haul delivery of biomass. This model is a mixed integer linear program solved using benders decomposition algorithm. Numerical analysis indicates that 100 million tons of biomass are located within 75 miles from a coal plant and could be delivered at $8.53/dry-ton; 60 million tons of biomass are located beyond 75 miles and could be delivered at $36/dry-ton.

  19. Logical Topology Design and Interface Assignment for Multi-Channel Wireless Mesh Networks

    E-Print Network [OSTI]

    Wong, Vincent

    -channel wireless mesh network (MC- WMN) consists of a number of stationary wireless routers, where each router-channel wireless mesh network (MC-WMN) con- sists of a number of stationary wireless routers, forming a wireless operates on a distinct frequency channel in the IEEE 802.11a/b/g bands. The wireless routers serve

  20. Designing a collector overlay architecture for fault diagnosis in video networks Mukundan Venkataraman a

    E-Print Network [OSTI]

    Chatterjee, Mainak

    Keywords: IPTV VoD Access network Fault diagnosis a b s t r a c t To prevent subscriber churn, network cause analysis can now take the granularity of loss rates or delay rates in individual segments would then need a way to adapt their application parameters (like frame-rate, packet- injection rate

  1. Incentives, Computation, and Networks: Limitations and Possibilities of Algorithmic Mechanism Design

    E-Print Network [OSTI]

    Singer, Yaron

    2011-01-01

    Limitations of Algorithmic Mechanism Design 2 CombinatorialPeo- 5 Budget Feasible Mechanisms II: Adventures in 5.11.2 Algorithmic Mechanism Design . . . . . . . . . . . . .

  2. Design of a low-cost underwater acoustic modem for short- range sensor networks

    E-Print Network [OSTI]

    Benson, Bridget

    2010-01-01

    switching or PWM (Class-D) amplifier Block diagram of the power amplifier designSwitching Amplifier Figure 6.6: Block diagram of the power amplifier design

  3. Design of a Network-based Mobile Gait Rehabilitation System Wenlong Zhang, Student Member, IEEE, Xiuming Zhu, Song Han, Student Member, IEEE,

    E-Print Network [OSTI]

    Chandy, John A.

    Design of a Network-based Mobile Gait Rehabilitation System Wenlong Zhang, Student Member, IEEE for improved mobility and tele- rehabilitation. In this system, an Internet-based body sensor network control of the gait rehabilitation device. A compact rotary elastic actuator (cRSEA) is used for providing

  4. Decomposition Based Solution Approaches for Multi-product Closed-Loop Supply Chain Network Design Models 

    E-Print Network [OSTI]

    Easwaran, Gopalakrishnan

    2010-01-16

    on decomposition techniques, heuristics, and meta-heuristic approaches to seek a solution that characterizes the configuration of the CLSC network, along with the coordinated forward and reverse flows....

  5. Design and implementation of evolutionary computation algorithms for volunteer compute networks

    E-Print Network [OSTI]

    Mbagwu, Otitochi (Otitochi E.)

    2014-01-01

    We implemented a distributed evolutionary computation system titled EvoGPJ Star (EGS) and deployed the system onto Boinc, a volunteer computing network (VCN). Evolutionary computation is computationally expensive and VCN ...

  6. The Development of a Synthesis Approach for Optimal Design of Seawater Reverse Osmosis Desalination Networks 

    E-Print Network [OSTI]

    Alnouri, Sabla

    2012-10-19

    on the developed representation, by accounting for detailed water quality information, within the SWRO desalination network optimization problem. The superstructures were modified to incorporate models that capture the performance of common membrane elements...

  7. Multiterminal source coding: sum-rate loss, code designs, and applications to video sensor networks 

    E-Print Network [OSTI]

    Yang, Yang

    2009-05-15

    Driven by a host of emerging applications (e.g., sensor networks and wireless video), distributed source coding (i.e., Slepian-Wolf coding, Wyner-Ziv coding and various other forms of multiterminal source coding), has ...

  8. Passive damping of beam vibrations through distributed electric networks and piezoelectric transducers: prototype design and experimental validation

    E-Print Network [OSTI]

    F. dell'Isola; C. Maurini; M. Porfiri

    2010-07-12

    The aim of this work is two-fold: to design devices for passive electric damping of structural vibrations by distributed piezoelectric transducers and electric networks, and to experimentally validate the effectiveness of such a damping concept. Two different electric networks are employed, namely a purely resistive network and an inductive-resistive one. The presented devices can be considered as distributed versions of the well-known resistive and resonant shunt of a single piezoelectric transducer. The technicalfeasibility and damping effectiveness of the proposed novel devices are assessed through the construction of an experimental prototype. Experimental results are shown to be in very good agreement with theoretical predictions. It is proved that the presented technique allows for a substantial reduction in the inductances used when compared with those required by the single resonant shunted transducer. In particular, it is shown that the required inductance decreases when the number of piezoelectric elements is increased. The electric networks are optimized in order to reduce forced vibrations close to the first resonance frequency. Nevertheless, the damping effectiveness for higher modes is experimentally proved. As well as specific results, fundamental theoretical and experimental considerations for passive distributed vibration control are provided.

  9. DESIGN AND ANALYSIS OF THE SNS CCL HOT MODEL WATER COOLING SYSTEM USING THE SINDA/FLUINT NETWORK MODELING TOOL

    SciTech Connect (OSTI)

    C. AMMERMAN; J. BERNARDIN

    1999-11-01

    This report presents results for design and analysis of the hot model water cooling system for the Spallation Neutron Source (SNS) coupled-cavity linac (CCL). The hot model, when completed, will include segments for both the CCL and coupled-cavity drift-tube linac (CCDTL). The scope of this report encompasses the modeling effort for the CCL portion of the hot model. This modeling effort employed the SINDA/FLUINT network modeling tool. This report begins with an introduction of the SNS hot model and network modeling using SINDA/FLUINT. Next, the development and operation of the SINDA/FLUINT model are discussed. Finally, the results of the SINDA/FLUINT modeling effort are presented and discussed.

  10. Design and Optimization of Piped Water Network for Tanker Fed Villages in

    E-Print Network [OSTI]

    Damani, Om P.

    Elevated Storage Reservoir GIS Geographical Information System GP Gram Panchayat LPCD Litres Per Capita per:............................................................................... 4 2. Design Methodology and Design Parameters .......................5 2.1 The Cost Components and Cost Estimation:............................................. 6 2.3 Identification of Source

  11. Network

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxide capture CSNationalNational UserNaval TheNetwork

  12. Audience design in children’s referential descriptions of abstract and concrete stimuli as a function of addressee familiarity: The boundaries of success. 

    E-Print Network [OSTI]

    Peel, Anna

    Audience design facilitates understanding by ensuring utterances are tailored to addressee needs (Clark & Murphy, 1982). The present research studied audience design in the length, hedging and article use of children’s references to abstract...

  13. Cooperative Wireless Network Behnaam Aazhang

    E-Print Network [OSTI]

    Aazhang, Behnaam

    Cooperative Wireless Network Behnaam Aazhang #12;Cooperative Wireless Network Behnaam Aazhang Sabharwal #12;Wireless Network · Infrastructure · Ad hoc · Mesh network #12;Engineering Wireless Network · Wireless links ­ Per link design #12;Single Wireless Link · Additive Gaussian Channels ­ Achievable rate

  14. Modeling and Design of Multi-hop Energy Efficient Wireless Networks

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    for under floor air distribution system regulation. The communication performance of an IEEE 802 on the temperature regulation for synchronous and asynchronous networks. iii #12;#12;Acknowledgements First, I would and passion for my work. I can definitely confirm it now, writing this page under the sun of Miami Beach. My

  15. Wireless Cloud Networks for the Factory of Things: Connectivity Modeling and Layout Design

    E-Print Network [OSTI]

    Savazzi, Stefano

    wired network and thus augment monitoring without the costly (and often unfeasible for logistic reasons buidling blockage (LOS/NLOS type links). These benefits come without additional maintenance efforts as wireless devices have now battery lifetime comparable to the planned maintenance schedules of wired systems

  16. Optimal Contract Design for Ancillary Services in Vehicle-to-Grid Networks

    E-Print Network [OSTI]

    Liu, K. J. Ray

    in the US [3]. Alternatively, in V2G networks, these services can be done by charging (or discharging) EVs--With the foreseeable large scale deployment of elec- tric vehicles (EVs) and the development of vehicle-to-grid (V2G.e., through the bidirectional power flow of EVs. A key issue in such kind of schemes is how to stimulate

  17. Design of adaptive connection admission control in hard real-time ATM networks 

    E-Print Network [OSTI]

    Li, Cen

    1998-01-01

    and buffer requirements. Zhang and Ferrari [4] discussed how local deterministic delay bounds can be guaranteed over an ATM link for bursty traffic, even when the sum of peak rates of all the connections exceeds one. Deterministic delay bounds in networks...

  18. Grand Challenges and Opportunities Supply Chain Networks: From Analysis to Design

    E-Print Network [OSTI]

    Nagurney, Anna

    of manufacturers and suppliers, distributors, retailers, and consumers at the demand markets. Today, supply chains may span thousands of miles across the globe, involve numerous suppliers, retailers, and consumers to nonlinearities; alternative behavior of users of the networks, which may lead to paradoxical phenomena; possibly

  19. P2P Design of Internet Forum based P2P Network for Contents Sharing

    E-Print Network [OSTI]

    Bahk, Saewoong

    are very useful to create a P2P network when the forum is facing with churn problem. Therefore, we proposed. Existing P2P protocols all have a problem called churn (the dynamics of peer participation). Accurately characterizing churn requires precise and unbiased information about the arrival and departure of peers, which

  20. A component-based approach to the design of networked control systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    the rest of the systems, they can be developed and tested separately and integrated later-care, industrial automation, power distribution, rescue operations and smart buildings. Many of these applications Integrated Project Reconfigurable Ubiq- uitous Networked Embedded Systems (RUNES) [8] brings together 21

  1. On the Design of a 44 Nonblocking Nanophotonic Switch for Photonic Networks on Chip Howard Wang, Benjamin G. Lee, Assaf Shacham, and Keren Bergman

    E-Print Network [OSTI]

    Bergman, Keren

    On the Design of a 4×4 Nonblocking Nanophotonic Switch for Photonic Networks on Chip Howard Wang, as power dissipation continues to be the ultimate limiting factor in contemporary processor designs switching elements, power scaling can essentially be decoupled from link distance and interconnect bandwidth

  2. Design principles and improvement of cost function based energy aware routing algorithms for wireless sensor networks

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    Design principles and improvement of cost function based energy aware routing algorithms, design principles and evaluation methods for cost function based routing algorithms. Two energy aware small changes in nodal remaining energy to large changes in the function value. For DCFR, its cost

  3. Passivity-Based Design of Wireless Networked Control Systems for Robustness to Time-Varying Delays

    E-Print Network [OSTI]

    Antsaklis, Panos

    Antsaklis University of Notre Dame Abstract Real-life cyber-physical systems, such as automotive ve- hicles grand vision for real-world Cyber Physical Systems (CPSs). Real-world CPSs, such as automotive vehicles design flow. mizing performance. The selected design platform (abstrac- tions and tools used for control

  4. STOMP: A Software Architecture for the Design and Simulation UAV-Based Sensor Networks

    SciTech Connect (OSTI)

    Jones, E D; Roberts, R S; Hsia, T C S

    2002-10-28

    This paper presents the Simulation, Tactical Operations and Mission Planning (STOMP) software architecture and framework for simulating, controlling and communicating with unmanned air vehicles (UAVs) servicing large distributed sensor networks. STOMP provides hardware-in-the-loop capability enabling real UAVs and sensors to feedback state information, route data and receive command and control requests while interacting with other real or virtual objects thereby enhancing support for simulation of dynamic and complex events.

  5. Optimal design of systems that evolve over time using neural networks

    E-Print Network [OSTI]

    Nolan, Michael K. (Michael Kevin)

    2005-01-01

    Computational design optimization is challenging when the number of variables becomes large. One method of addressing this problem is to use pattern recognition to decrease the solution space in which the optimizer searches. ...

  6. Lower power RF transceiver modeling and design for wireless microsensor networks

    E-Print Network [OSTI]

    Wang, Andrew Yu, 1976-

    2005-01-01

    The design of wireless microsensor systems has gained increasing importance for a variety of civil and military applications. With the objective of providing short-range connectivity with significant fault tolerance, these ...

  7. Design of wide-area electric transmission networks under uncertainty : methods for dimensionality reduction

    E-Print Network [OSTI]

    Donohoo-Vallett, Pearl Elizabeth

    2014-01-01

    The growth of location-constrained renewable generators and the integration of electricity markets in the United States and Europe are forcing transmission planners to consider the design of interconnection-wide systems. ...

  8. An evaluation of grain boundary engineering technology and processing scale-up

    E-Print Network [OSTI]

    Zelinski, Jeffrey A

    2005-01-01

    Grain boundary engineering is the manipulation of low stacking-fault energy, face- centered cubic material microstructures to break the connectivity of the general grain boundary network through the addition of special ...

  9. Designing an Energy Efficient Framework for Data Gathering in Wireless Sensor Network

    E-Print Network [OSTI]

    Mukherjee, Subhabrata; Bhattacharyya, Abhishek; Naskar, Mrinal K; Mukherjee, Amitava

    2012-01-01

    Wireless sensor network (WSN) is a collection of nodes which can communicate with each other without any prior infrastructure along with the ability to collect data autonomously and effectively after being deployed in an ad-hoc fashion to monitor a given area. One major problem encountered in data gathering wireless systems is to obtain an optimal balance among the number of nodes deployed, energy efficiency and lifetime as energy of nodes cannot be replenished. In this paper we propose first a scheme to estimate the number of nodes to be deployed in a WSN for a predetermined lifetime so that total energy utilization and complete connectivity are ensured under all circumstances. This scheme also guarantees that during each data gathering cycle, every node dissipates the requisite amount of energy, which thus minimizes the number of nodes required to achieve the desired network lifetime. Second, this paper has proposed a framework to conduct data gathering in WSN. Extensive simulations have been carried out in...

  10. From Waste to Hydrogen: An Optimal Design of Energy Production and Distribution Network

    E-Print Network [OSTI]

    Fan, Yueyue

    , and oil dependence will largely depend on the success of producing clean energy from renewable resources of producing clean energy from renewable resources. This paper focuses on the optimal design of the production. In most cases, renewable resources are more dispersed than the fossil energy resources they replace

  11. Design of experiments on neural network's training for nonlinear time series forecasting

    E-Print Network [OSTI]

    Popova, Elmira

    University of Texas at Austin, USA a r t i c l e i n f o Article history: Received 10 August 2007 Received t In this study, the statistical methodology of Design of Experiments (DOE) was applied to better determine of the most common trial and error technique for the ANN's training, DOE was found to be a better methodology

  12. Power-Aware Logical Topology Design Heuristics in Wavelength-Routing Networks

    E-Print Network [OSTI]

    the ICT sector, are already responsible for consuming a significant part of the world energy budget to consume today 20% of the total energy of the Internet, and their power consumption is expected to become be exploited to mitigate their energy requirements. One of the main steps which has to be faced in designing WR

  13. PaNeCS: A Modeling Language for Passivity-based Design of Networked Control

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    to check for passivity and a code gener- ator for simulation in MATLAB/Simulink using the TrueTime platform modeling toolbox. The resulting designs are by construction more robust to platform effects). Real-world CPSs such as automotive vehicles, building automation systems, and groups of unmanned air

  14. Impact of On-chip Inductance on Power Distribution Network Design for Nanometer Scale Integrated Circuits

    E-Print Network [OSTI]

    - strate the importance of considering on-chip power grid induc- tance, and how its impact scales) are expected to adversely impact the chip's power supply grid design, this work demonstrates that a power grid. The parasitic elements in the wires from off-chip power supply sources to the terminals of each transistor cause

  15. 1760 IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 24, NO. 11, NOVEMBER 2005 Nonlinear Decision Boundaries for

    E-Print Network [OSTI]

    Makris, Yiorgos

    1760 IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 24, NO. 11. INTRODUCTION THE conventional approach to classification of analog cir- cuits as nominal or faulty employs, CT 06520-8285 USA (e-mail: yiorgos. makris@yale.edu). Digital Object Identifier 10.1109/TCAD.2005

  16. CONTAM 03 Embedded Networked Sensing in Soils: A Stochastic Data Assimilation Approach to Network Design and Real-time State and Parameter

    E-Print Network [OSTI]

    Soatto, Stefano

    CONTAM 03 Embedded Networked Sensing in Soils: A Stochastic Data Assimilation Approach to Network.g. sodium and/or nitrogen) and these excessive chemicals in soil could restrain crop growth and also pollute the groundwater beneath the irrigated lands. Thus, a monitoring and modeling system providing real-time soil state

  17. Energy aware network coding in wireless networks

    E-Print Network [OSTI]

    Shi, Xiaomeng, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    Energy is one of the most important considerations in designing reliable low-power wireless communication networks. We focus on the problem of energy aware network coding. In particular, we investigate practical energy ...

  18. JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. XX, NO. XX, XX XX 201X 1 Survivable topology design of submarine networks

    E-Print Network [OSTI]

    Zukerman, Moshe

    of submarine networks Cong Cao, Moshe Zukerman, Fellow, IEEE, Weiwei Wu, Jonathan H. Manton, Senior Member, and service interruptions are very costly. Unfortunately, submarine fibre-optic networks are vulnerable to unpredictable disasters, such as earthquakes or nuclear explosions, which pose significant large-scale threats

  19. Int. J. Mobile Network Design and Innovation, Vol. 1, Nos. 3/4, 2006 215 Multisensor collaboration in wireless

    E-Print Network [OSTI]

    Nasipuri, Asis

    in wireless sensor networks for detection of spatially correlated signals Asis Nasipuri* Electrical collaboration for the detection of weak and noisy signals using a network of wireless sensors. We propose of the proposed schemes, obtained using extensive computer simulations, are presented. Keywords: wireless sensor

  20. Networked embedded systems such as wireless sensor networks are usually designed to be event-driven so that they are reactive

    E-Print Network [OSTI]

    Zhao, Feng

    synchronous and locally asynchronous, code generation, sensor network 1. INTRODUCTION Emerging embedded and consistency of shared states. This paper describes a globally asynchronous and locally synchronous model (TinyGALS) for programming event-driven embedded systems. Software components are composed locally through synchronous method

  1. Boundaries and Topological Algorithms

    E-Print Network [OSTI]

    Fleck, Margaret Morrison

    1988-09-01

    This thesis develops a model for the topological structure of situations. In this model, the topological structure of space is altered by the presence or absence of boundaries, such as those at the edges of objects. ...

  2. Enhancing network robustness via shielding

    E-Print Network [OSTI]

    Zhang, Jianan, S.M. Massachusetts Institute of Technology

    2014-01-01

    Shielding critical links enhances network robustness and provides a new way of designing robust networks. We first consider shielding critical links to guarantee network connectivity after any failure under geographical ...

  3. Giving cycling the green light: An overview of transportation in Ireland and the design of the National Cycle Network

    E-Print Network [OSTI]

    Manton, Richard

    2013-01-01

    criteria analysis for the route selection of greenways Integration Connectivity Design SafetyCriteria: literature review, surveys ? Scores: this research ? Weights: this research Integratio n Connecti vity Design Safety

  4. High Performance Datacenter Networks

    E-Print Network [OSTI]

    Cortes, Corinna

    High Performance Datacenter Networks Architectures, Algorithms, and Opportunities #12;Synthesis architecture conferences, such as ISCA, HPCA, MICRO, and ASPLOS. High Performance Datacenter Networks Computer Architecture Daniel J. Sorin 2009 The Datacenter as a Computer: An Introduction to the Design

  5. In Proceedings of the 3rd Symposium on Networked Systems Design and Implementation (NSDI '06), San Jose, California, May 2006

    E-Print Network [OSTI]

    Andersen, Dave

    as a common interface between applications and the lower-level network layers, facilitating innovation both connection. Therefore, new innovations in bulk data transfer must be reimple- mented for each application. Not surprisingly, the rate of adoption of innovative transfer mechanisms, particularly in existing systems, is slow

  6. Analysis of civil aircraft propulsors with boundary layer ingestion

    E-Print Network [OSTI]

    Hall, David Kenneth

    2015-01-01

    This thesis describes (i) guidelines for propulsor sizing, and (ii) strategies for fan turbomachinery conceptual design, for a boundary layer ingesting (BLI) propulsion system for advanced civil transport aircraft. For the ...

  7. Distributed Roughness Receptivity in a Flat Plate Boundary Layer 

    E-Print Network [OSTI]

    Kuester, Matthew Scott

    2014-04-18

    the incoming boundary layer. This dissertation describes an experiment specifically designed to study the shielding effect. Three roughness configurations, a deterministic distributed roughness patch, a slanted rectangle, and the combination of the two, were...

  8. On synchronous robotic networks - Part I: Models, tasks, and complexity

    E-Print Network [OSTI]

    Frazzoli, Emilio; Bullo, Francesco; Cortes, Jorge; Martinez, Sonia

    2007-01-01

    E. Frazzoli, “On synchronous robotic networks Part II: Timeto control design for mobile robotic networks. Application2007 On Synchronous Robotic Networks—Part I: Models, Tasks,

  9. Network Management Network Management

    E-Print Network [OSTI]

    Giaccone, Paolo

    Network Management Pag. 1 Network Management Network management and QoS provisioning - 1Andrea of this license visit: http://creativecommons.org/licenses/by-nc- /3 0/ Network management and QoS provisioning ­ Chapter 9, Network Management, of the book Jim Kurose, Keith Ross, Computer Networking, A Top Down

  10. Controlling Electromagnetic Fields at Boundaries of Arbitrary Geometries

    E-Print Network [OSTI]

    Teo, Jonathon Yi Han; Molardi, Carlo; Genevet, Patrice

    2015-01-01

    Rapid developments in the emerging field of stretchable and conformable photonics necessitate analytical expressions for boundary conditions at metasurfaces of arbitrary geometries. Here, we introduce the concept of conformal boundary optics: a design theory that determines the optical response for designer input and output fields at such interfaces. Given any object, we can realise coatings to achieve exotic effects like optical illusions and anomalous diffraction behaviour. This approach is relevant to a broad range of applications from conventional refractive optics to the design of the next-generation of wearable optical components. This concept can be generalized to other fields of research where designer interfaces with nontrivial geometries are encountered.

  11. Design of Optical Interconnect Transceiver Circuits and Network-on-chip Architectures for Inter- and Intra-chip Communication 

    E-Print Network [OSTI]

    Li, Cheng

    2013-12-04

    the electrical 2D mesh NoCs on realistic workloads. Under the same ideal throughput, LumiNoC achieves laser power reduction of 78%, and overall power reduction of 44% versus competing designs....

  12. Matched interface and boundary (MIB) method for elliptic problems with sharp-edged interfaces

    E-Print Network [OSTI]

    Zhou, Yongcheng

    Matched interface and boundary (MIB) method for elliptic problems with sharp-edged interfaces with sharp-edged interfaces, thin-layered interfaces and interfaces that intersect with geometric boundary. This work generalizes the matched interface and boundary (MIB) method previously designed for solving

  13. Design of an Overmoded-Waveguide Directional Antenna for Use in In-Building Ventilation Duct Wireless Networks

    E-Print Network [OSTI]

    Stancil, Daniel D.

    Design of an Overmoded-Waveguide Directional Antenna for Use in In-Building Ventilation Duct ventilation ducts. We obtain experimentally the element size and spacing of a reflector and driven element that can be used for IEEE 802.11b/g/n signals in a cylindrical duct to provide 3.1 dB of gain and a front

  14. Design Considerations for an On-Demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network

    E-Print Network [OSTI]

    Brown, Timothy X.

    1 Design Considerations for an On-Demand Minimum Energy Routing Protocol for a Wireless Ad Hoc at Boulder Boulder, CO-80309 Abstract--A minimum energy routing protocol reduces the energy con- sumption of energy to get the packets to their destination. This paper identifies the necessary features of an on

  15. Analysis of IR-Drop Scaling with Implications for Deep Submicron P/G Network Designs Amir H. Ajami1*

    E-Print Network [OSTI]

    designs may not be sufficient to limit the voltage fluctuations over the power grid for future and their DC noise margins. An excessive voltage drop in the power grid may also result in a functional failure of the problem. Simulating all the nonlinear devices in the chip together with non-ideal power grid

  16. Brunnian Braids Boundary Brunnian Braids Main Results Boundary Brunnian braids, mirror reflection

    E-Print Network [OSTI]

    Wu, Jie

    Brunnian Braids Boundary Brunnian Braids Main Results Boundary Brunnian braids, mirror reflection December 17, 2007 #12;Brunnian Braids Boundary Brunnian Braids Main Results Boundary Brunnian braids, mirror reflection and the homotopy groups Brunnian Braids Boundary Brunnian Braids Main Results #12

  17. Network on a Chip: Modeling Wireless Networks with Asynchronous VLSI

    E-Print Network [OSTI]

    Manohar, Rajit

    for Internet-scale networks (for instance, see [2, 3, 5]), as well as the design of flexible and compositionalNetwork on a Chip: Modeling Wireless Networks with Asynchronous VLSI Rajit Manohar and Clinton, Ithaca NY 14853 Abstract We introduce the notion of a network-on-a-chip: a programmable, asynchronous

  18. Improving performance of TCP over wireless networks 

    E-Print Network [OSTI]

    Mehta, Miten N.

    1998-01-01

    TCP has been designed and tuned to perform well on a phics. wired network made up of links with low bit-error rates. Wireless networks and heterogeneous networks consisting of wired and wireless links have many different characteristics compared...

  19. Boundary Degeneracy of Topological Order

    E-Print Network [OSTI]

    Juven Wang; Xiao-Gang Wen

    2015-01-15

    We introduce the concept of boundary degeneracy of topologically ordered states on a compact orientable spatial manifold with boundaries, and emphasize that the boundary degeneracy provides richer information than the bulk degeneracy. Beyond the bulk-edge correspondence, we find the ground state degeneracy of the fully gapped edge modes depends on boundary gapping conditions. By associating different types of boundary gapping conditions as different ways of particle or quasiparticle condensations on the boundary, we develop an analytic theory of gapped boundaries. By Chern-Simons theory, this allows us to derive the ground state degeneracy formula in terms of boundary gapping conditions, which encodes more than the fusion algebra of fractionalized quasiparticles. We apply our theory to Kitaev's toric code and Levin-Wen string-net models. We predict that the $Z_2$ toric code and $Z_2$ double-semion model (more generally, the $Z_k$ gauge theory and the $U(1)_k \\times U(1)_{-k}$ non-chiral fractional quantum Hall state at even integer $k$) can be numerically and experimentally distinguished, by measuring their boundary degeneracy on an annulus or a cylinder.

  20. Boundary Plasma Turbulence Simulations for Tokamaks

    SciTech Connect (OSTI)

    Xu, X; Umansky, M; Dudson, B; Snyder, P

    2008-05-15

    The boundary plasma turbulence code BOUT models tokamak boundary-plasma turbulence in a realistic divertor geometry using modified Braginskii equations for plasma vorticity, density (ni), electron and ion temperature (T{sub e}; T{sub i}) and parallel momenta. The BOUT code solves for the plasma fluid equations in a three dimensional (3D) toroidal segment (or a toroidal wedge), including the region somewhat inside the separatrix and extending into the scrape-off layer; the private flux region is also included. In this paper, a description is given of the sophisticated physical models, innovative numerical algorithms, and modern software design used to simulate edge-plasmas in magnetic fusion energy devices. The BOUT code's unique capabilities and functionality are exemplified via simulations of the impact of plasma density on tokamak edge turbulence and blob dynamics.

  1. Analyzing the performance of an overlay network for P2P Social Networks.

    E-Print Network [OSTI]

    Gunes, Mehmet Hadi

    in a bounded number of steps. · Boundary conditions - The Churn rate at which the algorithm be- comes unstable routing | CS 765 - Complex Networks 9/29 #12;P2P Social Networks Peer Churn · Peer polulation has dynamic/29 #12;P2P Social Networks As churn rate increases, · Will maintanence rate increase to keep overlay

  2. Grain Boundary Percolation Modeling of Fission Gas Release in Oxide Fuels

    SciTech Connect (OSTI)

    Paul C. Millett; Michael R. Tonks; S. B. Biner

    2012-05-01

    We present a new approach to fission gas release modeling in oxide fuels based on grain boundary network percolation. The method accounts for variability in the bubble growth and coalescence rates on individual grain boundaries, and the resulting effect on macroscopic fission gas release. Two-dimensional representa- tions of fuel pellet microstructures are considered, and the resulting gas release rates are compared with traditional two-stage Booth models, which do not account for long-range percolation on grain boundary net- works. The results show that the requirement of percolation of saturated grain boundaries can considerably reduce the total gas release rates, particularly when gas resolution is considered.

  3. Network Management Network Management

    E-Print Network [OSTI]

    Giaccone, Paolo

    Network Management Pag. 1 Network Management Andrea Bianco Telecommunication Network Group Network management and QoS provisioning - 1Andrea Bianco ­ TNG group - Politecnico di Torino Telecommunication management and QoS provisioning - 2Andrea Bianco ­ TNG group - Politecnico di Torino Stanford, California

  4. Next Generation Mobile Networks and Ubiquitous

    E-Print Network [OSTI]

    networks (Computer networks) 2. Ubiquitous computing. I. Pierre, Samuel. TK5105.77.N49 2010 621.382--dc22 written permission of IGI Global is prohibited. Chapter 4 Cross Layer Design for Multimedia Transmission of cross layer design for multimedia transmission over wireless networks. In wireless networks multimedia

  5. Network Characterization Service (NCS)

    SciTech Connect (OSTI)

    Jin, Guojun; Yang, George; Crowley, Brian; Agarwal, Deborah

    2001-06-06

    Distributed applications require information to effectively utilize the network. Some of the information they require is the current and maximum bandwidth, current and minimum latency, bottlenecks, burst frequency, and congestion extent. This type of information allows applications to determine parameters like optimal TCP buffer size. In this paper, we present a cooperative information-gathering tool called the network characterization service (NCS). NCS runs in user space and is used to acquire network information. Its protocol is designed for scalable and distributed deployment, similar to DNS. Its algorithms provide efficient, speedy and accurate detection of bottlenecks, especially dynamic bottlenecks. On current and future networks, dynamic bottlenecks do and will affect network performance dramatically.

  6. Vacuum Structure and Boundary Renormalization Group

    E-Print Network [OSTI]

    M. Asorey; J. M. Munoz-Castaneda

    2007-12-28

    The vacuum structure is probed by boundary conditions. The behaviour of thermodynamical quantities like free energy, boundary entropy and entanglement entropy under the boundary renormalization group flow are analysed in 2D conformal field theories. The results show that whereas vacuum energy and boundary entropy turn out to be very sensitive to boundary conditions, the vacuum entanglement entropy is independent of boundary properties when the boundary of the entanglement domain does not overlap the boundary of the physical space. In all cases the second law of thermodynamics holds along the boundary renormalization group flow.

  7. Spatial design principles for sustainable hydropower development in river basins

    E-Print Network [OSTI]

    Jager, Henriette I.

    : Freshwater reserve design Hydroelectric power Network theory Optimization Regulated rivers River portfolio

  8. Geology. Most of the Guadalupe River flows through either Glen Rose Limestone, or Fluviatile Terrace Deposits. Combined geologic categories are designated where two geologic units exist in cross section and the channel flows along a boundary between the t

    E-Print Network [OSTI]

    Curran, Joanna C.

    Results Geology. Most of the Guadalupe River flows through either Glen Rose Limestone, or Fluviatile Terrace Deposits. Combined geologic categories are designated where two geologic units exist length. The highest percentage of bedrock coverage per geologic type appears in combined categories (Fig

  9. Geography 104 Boundary Layer Climates

    E-Print Network [OSTI]

    Geography 104 Boundary Layer Climates Assignment #5 Question 1: The Urban Heat Island The following briefly how the use of giant windmills or fans can be effective in preventing frost in an orchard. Refer

  10. MMS: An Autonomic Network-Layer Foundation for Network Management

    E-Print Network [OSTI]

    Ng, T. S. Eugene

    secured, and/or suboptimal in performance. This paper presents the design and implementation of the Meta-Management1 MMS: An Autonomic Network-Layer Foundation for Network Management Hemant Gogineni, Albert Research §Rice University Abstract-- Networks cannot be managed without management plane communications

  11. OPTICAL WDM NETWORK DYNAMICS: AN ANALYTICAL APPROACH WITH APPLICATIONS TO ROBUST NETWORK

    E-Print Network [OSTI]

    Pavel, Lacra

    OPTICAL WDM NETWORK DYNAMICS: AN ANALYTICAL APPROACH WITH APPLICATIONS TO ROBUST NETWORK DESIGN- proach for studying dynamics in optical networks. The approach is based on recasting the problem- resentation for an optical network are developed and particularized to different optical network configura

  12. LIANG, WEI. Design and Analysis of Authentication Mechanisms in Single-and Multi-Hop Wireless Networks. (Under the direction of Professor Wenye Wang).

    E-Print Network [OSTI]

    Wang, Wenye

    -Hop Wireless Networks. (Under the direction of Professor Wenye Wang). The increasing demand for ubiquitous Internet services imposes more security threats to communications due to open mediums in wireless networks on the transmission. As one of most widely used security mechanisms, authentication is used to identify mobile nodes

  13. Boundary geometric control of a counter-current heat exchanger

    E-Print Network [OSTI]

    Boyer, Edmond

    Boundary geometric control of a counter-current heat exchanger Ahmed MAIDIa , Moussa DIAFb , Jean control of a counter-current heat exchanger whose control is designed considering a model based on two. The objective consists in controlling the internal fluid temperature, at the heat exchanger outlet

  14. PINCO: a Pipelined In-Network COmpression Scheme for Data Collection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Ling

    networks, low-power cir- cuit design, and micro electro-mechanical systems (MEMS) has led to the production

  15. Designing Flexible Heat Exchanger Networks 

    E-Print Network [OSTI]

    Gautam, R.; Chen, H. S.; Wareck, J. S.

    1988-01-01

    optimization approach will work Quite well here. So it is tried first. 210 Table 1 Example" STREAK DATA Period 1 Cl/3 of the Time) STREAK TSC"C) TTC"C) KCP CkW/OC) 1 249 100 10.55 2 259 128 12.66 3 96 170 9.144 4 106 270 15.00 Period 2 STREAK TSC..."C) TTC"C) KCP CkW/"C) 1 229 120 7.032 2 239 148 8.44 3 96 170 9.144 4 106 270 15.00 Peri od 3 C1/3 of the Time) STREAK TSC "C) TTC "C) KCP CkW/"C) 1 249 100 10.55 2 259 128 12.66 3 116 150 6.096 4 126 250 10.00 "Floudas and Grossman, 1986...

  16. Optimal synchronization of complex networks

    E-Print Network [OSTI]

    Per Sebastian Skardal; Dane Taylor; Jie Sun

    2014-10-17

    We study optimal synchronization in networks of heterogeneous phase oscillators. Our main result is the derivation of a synchrony alignment function that encodes the interplay between network structure and oscillators' frequencies and can be readily optimized. We highlight its utility in two general problems: constrained frequency allocation and network design. In general, we find that synchronization is promoted by strong alignments between frequencies and the dominant Laplacian eigenvectors, as well as a matching between the heterogeneity of frequencies and network structure.

  17. Effective slip boundary conditions for arbitrary periodic surfaces: the surface mobility tensor

    E-Print Network [OSTI]

    Kamrin, Kenneth N.

    In a variety of applications, most notably microfluidics design, slip-based boundary conditions have been sought to characterize fluid flow over patterned surfaces. We focus on laminar shear flows over surfaces with periodic ...

  18. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S [Richland, WA; TeGrotenhuis, Ward E [Kennewick, WA; Whyatt, Greg A [West Richland, WA

    2010-01-26

    Various aspects and applications or microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  19. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

    2007-09-18

    Various aspects and applications of microsystem process networks are described. The design of many types of Microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  20. Microsystem process networks

    DOE Patents [OSTI]

    Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

    2006-10-24

    Various aspects and applications of microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having exergetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  1. Boundary-layer control by electric fields A feasibility study

    E-Print Network [OSTI]

    Mendes, R V

    1998-01-01

    A problem of great concern in aviation and submarine propulsion is the control of the boundary layer and, in particular, the methods to extend the laminar region as a means to decrease noise and fuel consumption. In this paper we study the flow of air along an airfoil when a layer of ionized gas and a longitudinal electric field are created in the boundary layer region. By deriving scaling solutions and more accurate numerical solutions we discuss the possibility of achieving significant boundary layer control for realistic physical parameters. Practical design formulas and criteria are obtained. We also discuss the perspectives for active control of the laminar-to-turbulent transition fluctuations by electromagnetic field modulation.

  2. Provisioning high-availability datacenter networks for full bandwidth communication

    E-Print Network [OSTI]

    Huang, Changcheng

    Provisioning high-availability datacenter networks for full bandwidth communication Wenda Ni a 4 December 2013 Available online 12 March 2014 Keywords: Datacenter networks Valiant load balancing critical challenge in datacenter network design is full bandwidth communication. Recent advances have

  3. Transmission Line Boundary Protection Using Wavelet Transform and Neural Network

    E-Print Network [OSTI]

    is verified using frequency-dependent transmission line model and the test results prove its enhanced use data from two ends. The non-unit protection such as distance relay, can not protect the entire end only. In this case, the relay at one end can protect the entire line length with no intentional

  4. Evolution of Grain Boundary Networks in Extreme Radiation Environments

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFES OctoberEvan Racah Evan Racah 1517546Has Evidence ofof the

  5. Evolution of Grain Boundary Networks in Extreme Radiation Environments

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunitiesof Energy8) Wigner Home ·theEvenEvidence forRecent

  6. Integrated transportation system design optimization

    E-Print Network [OSTI]

    Taylor, Christine P. (Christine Pia), 1979-

    2007-01-01

    Traditionally, the design of a transportation system has focused on either the vehicle design or the network flow, assuming the other as given. However, to define a system level architecture for a transportation system, ...

  7. Genomic Regulatory Networks, Reduction Mappings and Control 

    E-Print Network [OSTI]

    Ghaffari, Noushin

    2012-07-16

    . This dissertation uses BNps, to model gene regulatory networks with an intent of designing stationary control policies (CP) for the networks to shift their dynamics toward more desirable states. Markov Chains (MC) are used to represent the PBNs and stochastic...

  8. An analysis of international transportation network

    E-Print Network [OSTI]

    Chiu, Yu-Yen

    2005-01-01

    This thesis discusses a network design problem based on a case study with a footwear company, which intends to minimize total supply chain costs by establishing a distribution network which bypasses its primary distribution ...

  9. Building BoundariesTM Information for Parents

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Building BoundariesTM Information for Parents Even very young children can learn some skills of 2 #12;Building BoundariesTM: Information for Parents How to Recognize Warning Signs in Your Child

  10. Boundary learning by optimization with topological constraints

    E-Print Network [OSTI]

    Helmstaedter, Moritz N.

    Recent studies have shown that machine learning can improve the accuracy of detecting object boundaries in images. In the standard approach, a boundary detector is trained by minimizing its pixel-level disagreement with ...

  11. Networks Against Time: From Food to Pharma Anna Nagurney

    E-Print Network [OSTI]

    Nagurney, Anna

    as Networks Why User Behavior Must be Captured in Supply Chain Network Analysis and Design Time as a Challenge Models · · Blood and Medical Nuclear Supply Chains Supply Chain Networks - Game Theory Models Issues in Supply Chain Networks that We Have Explored from Mergers & Acquisitions to Design for Critical

  12. Proc. 3rd International Conference on Hydroinformatics, Copenhagen, August 1998. Balkema, Rotterdam 1 Application of global optimization to the design of pipe networks

    E-Print Network [OSTI]

    Neumaier, Arnold

    (sign included). The second hydraulic constraint is the energy con- straint according to which the total for Infrastructural, Hydraulic and Environmental Engineering (IHE), P.O. Box 3015, 2601 DA Delft, The Netherlands and neither makes any restriction on the type of hydraulic components in the network nor does it need

  13. How (Not) to Protect Genomic Data Privacy in a Distributed Network: Using Trail Re-identification to Evaluate and Design Privacy Protection Systems

    E-Print Network [OSTI]

    1 How (Not) to Protect Genomic Data Privacy in a Distributed Network: Using Trail Re-specific genomic data into clinical practice and research raises serious privacy concerns. Various systems have being disclosed, they lack formal proofs. In this paper, we study the erosion of privacy when genomic

  14. Cookies Along Trust-Boundaries (CAT): Accurate and Deployable Flood Protection

    E-Print Network [OSTI]

    Akella, Aditya

    Cookies Along Trust-Boundaries (CAT): Accurate and Deployable Flood Protection Martin Casado Aditya@google.com, shenker@icsi.berkeley.edu Abstract Packet floods targeting a victim's incoming bandwidth are no- toriously their applicability in practice. We propose CAT, a new network-based flood protection scheme. In CAT, all flows must

  15. ORIGINAL ARTICLE GPS snow sensing: results from the EarthScope Plate Boundary

    E-Print Network [OSTI]

    Larson, Kristine

    ORIGINAL ARTICLE GPS snow sensing: results from the EarthScope Plate Boundary Observatory Kristine and by water supply managers to predict/mitigate drought and flood conditions. Existing in situ snow sensors/networks lack the necessary spatial and temporal sensitivity. Satellite measurements currently assess snow cover

  16. Network lifetime maximization for time-sensitive data gathering in wireless sensor networks

    E-Print Network [OSTI]

    Liang, Weifa

    or human inaccessible environments such as battlefields or nuclear polluted re- gions. Therefore, energy Keywords: Wireless sensor networks Network lifetime prolongation Energy optimization Load-balanced spanning tree Network flow Algorithm design a b s t r a c t Energy-constrained sensor networks have been widely

  17. Validating computed grain boundary energies in fcc metals using the grain boundary character distribution

    E-Print Network [OSTI]

    Rohrer, Gregory S.

    Validating computed grain boundary energies in fcc metals using the grain boundary character. Since the GBCD is inversely related to the grain boundary energy distribution, it offers a useful metric for validating grain boundary energy calculations. Comparisons between the measured GBCD and calculated energies

  18. Efficient Radio Communication for Energy Constrained Sensor Networks

    E-Print Network [OSTI]

    Liu, Tao

    2013-01-01

    Petri M¨ah¨onen. “Designing a reliable and stable link quality metric for wireless sensor networks. ”

  19. Boundary layer ingesting inlet design for a silent aircraft

    E-Print Network [OSTI]

    Freuler, Patrick N., 1980-

    2005-01-01

    (cont.) common nacelle, L/D ratios between 2.5 and 3.0, fan face to throat area ratios above 1.06, and offsets lower than 11%. Curvature ahead of the inlet should be avoided as well as bifurcations inside the duct. Inlet ...

  20. Pushing Boundaries on Performance & Design: the ClimateMaster...

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

    Pump August 01, 2013 The ClimateMaster Trilogy 40 Q-Mode(tm) Geothermal Heat Pump, is the result of a 5 year collaboration between ClimateMaster, Inc. and Oak Ridge National...

  1. Pushing Boundaries on Performance & Design: the ClimateMaster...

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

    Pump - Part II September 01, 2013 The ORNL R&D 100 award winning team: Van Baxter, Ed Vineyard, Jeff Munk, Anthony Gehl, Moonis Ally, Keith Rice, and Bo Shen picture with the...

  2. Designing a more nonlinearly stable laminar flow via boundary manipulation

    E-Print Network [OSTI]

    Rabin, S. M. E.; Caulfield, C. P.; Kerswell, R. R.

    2013-12-04

    referees which have led to a substantially improved discussion. SMER is supported by a doctoral training award from EPSRC. This work was performed using the Darwin Supercomputer of the University of Cambridge High Performance Computing Service (http...

  3. Grain boundaries in coated conductors

    E-Print Network [OSTI]

    Weigand, Marcus

    2010-07-06

    ,757 • Bibliography: 5,087 ix Publications and Conference Presentations This thesis led to the following publications: • M. Weigand, S. C. Speller, G. M. Hughes, N. A. Rutter, S. Lozano-Perez, C. R. M. Grovenor and J. H. Durrell: “Individual grain boundary properties... and overall performance of metal-organic deposition coated conductors ”, Phys. Rev. B 81, 174537 (2010) • R. Hühne, J. Eickemeyer, V. S. Sarma, A. Güth, T. Thersleff, J. Freudenberger, O. de Haas, M. Weigand, J. H. Durrell, L. Schultz and B. Holzapfel: “Ap...

  4. Boundary Layer Cloud Turbulence Characteristics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura|BilayerBiomimeticBooks Are FunBorrowingBrungerBoundary

  5. Further development and testing of a second-order bulk boundary layer model. Master's thesis

    SciTech Connect (OSTI)

    Krasner, R.D.

    1993-05-03

    A one-layer bulk boundary layer model is developed. The model predicts the mixed layer values of the potential temperature, mixing ratio, and u- and v-momentum. The model also predicts the depth of the boundary layer and the vertically integrated turbulence kinetic energy (TKE). The TKE is determined using a second-order closure that relates the rate of dissipation to the TKE. The fractional area covered by rising motion sigma and the entrainment rate (E) are diagnostically determined. The model is used to study the clear convective boundary layer (CBL) using data from the Wangara, Australia boundary layer experiment. The Wangara data is also used as an observation base to validate model results. A further study is accomplished by simulating the planetary boundary layer (PBL) over an ocean surface. This study is designed to find the steady-state solutions of the prognostic variable.

  6. Controlling Across Complex Networks Emerging links between networks and control

    E-Print Network [OSTI]

    , and Electrical Engineering University of New Mexico, Albuquerque NM 87131. Sandia National Laboratories communication network infrastructure into our designs; for example, we now consider the impact of link capacity as biology, computer science, physics, and social science. In such a context, networks provide a principled

  7. Energy efficiency in wireless networks 

    E-Print Network [OSTI]

    Jung, Eun-Sun

    2005-11-01

    Energy is a critical resource in the design of wireless networks since wireless devices are usually powered by batteries. Battery capacity is finite and the progress of battery technology is very slow, with capacity expected to make little...

  8. Introduction to Mathematical Physics. Calculus of Variations and Boundary-value Problems

    E-Print Network [OSTI]

    V. M. Adamyan; M. Ya. Sushko

    2015-03-05

    This book considers posing and the methods of solving simple linear boundary-value problems in classical mathematical physics. The questions encompassed include: the fundamentals of calculus of variations; one-dimensional boundary-value problems in the oscillation and heat conduction theories, with a detailed analysis of the Sturm-Liouville boundary-value problem and substantiation of the Fourier method; sample solutions of the corresponding problems in two and three dimensions, with essential elements of the special function theory. The text is designed for Physics, Engineering, and Mathematics majors.

  9. Circular Planar Electrical Networks: Posets and Positivity Joshua Alman

    E-Print Network [OSTI]

    Ciocan-Fontanine, Ionut

    Circular Planar Electrical Networks: Posets and Positivity Joshua Alman , Carl Lian , and Brandon prove a host of new results on circular planar electrical networks. We first construct a poset EPn of electrical net- works with n boundary vertices, and prove that it is graded by number of edges of critical

  10. Network Economics Anna Nagurney

    E-Print Network [OSTI]

    Nagurney, Anna

    Performance/Efficiency Measure with Applications to a Variety of Network Systems · Transportation Network Network Satellite and Undersea Cable Networks Duke Energy Gas Pipeline Network Transportation with transportation as the unifying application. #12;Subway Network Railroad Network Iridium Satellite Constellation

  11. Design Editorial Design Innovation

    E-Print Network [OSTI]

    Papalambros, Panos

    juxtaposition of innovation versus invention: "Invention is the first occurrence of an idea for a new product such as innovation strategies, product design, service inno- vation, cutting-edge designers, design awards, and green design. Much of that perspective on innovation is then tied to industrial or product design, often

  12. Effective Loan Program Design and Integration with Contractors...

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

    Loan Program Design and Integration with Contractors Effective Loan Program Design and Integration with Contractors Better Buildings Residential Network Financing and Revenue Peer...

  13. 4.3 Boundary integral equations

    E-Print Network [OSTI]

    2010-10-18

    62. CHAPTER 4. OBSTACLE SCATTERING. 4.3 Boundary integral equations. We introduce the equivalent sources for the Helmholtz equation and establish ...

  14. Performance Boundaries in Nb3Sn Superconductors

    E-Print Network [OSTI]

    Godeke, Arno

    2006-01-01

    Boundaries in Nb 3 Sn Superconductors – Berkeley, CABoundaries in Nb 3 Sn Superconductors – Berkeley, CABoundaries in Nb 3 Sn Superconductors Arno Godeke Berkeley,

  15. 1 Toward an Improved Understanding of Network

    E-Print Network [OSTI]

    Riedi, Rudolf H.

    scaling phenomenon in aggregate network traffic at the packet level in terms of more elementary properties understanding of the effects of large-time scaling properties in measured network traffic on the design and end-to-end congestion control mechanisms that play a central role in modern-day data networks

  16. Supply Chain Networks: Challenges and Opportunities

    E-Print Network [OSTI]

    Nagurney, Anna

    Supply Chains Anna Nagurney Supply Chain Networks #12;Energy Supply Chains Anna Nagurney Supply ChainSupply Chain Networks: Challenges and Opportunities from Analysis to Design Anna Nagurney Isenberg on Computational Management Science Vienna, Austria July 28-30, 2010 Anna Nagurney Supply Chain Networks #12

  17. Supply Chain Networks: Challenges and Opportunities

    E-Print Network [OSTI]

    Nagurney, Anna

    Supply Chains Anna Nagurney Supply Chain Networks #12;Energy Supply Chains Anna Nagurney Supply ChainSupply Chain Networks: Challenges and Opportunities from Analysis to Design Anna Nagurney Isenberg November 23, 2010 Anna Nagurney Supply Chain Networks #12;Acknowledgments I would like to thank Dr. Les

  18. Virtual Scanning Algorithm for Road Network Surveillance

    E-Print Network [OSTI]

    Jeong, Jaehoon "Paul"

    Virtual Scanning Algorithm for Road Network Surveillance Jaehoon Jeong, Student Member, IEEE, Yu Gu a VIrtual Scanning Algorithm (VISA), tailored and optimized for road network surveillance. Our design roadways and 2) the road network maps are normally known. We guarantee the detection of moving targets

  19. A Petri Net Approach to Persistence Analysis in Chemical Reaction Networks

    E-Print Network [OSTI]

    De Leenheer, Patrick

    A Petri Net Approach to Persistence Analysis in Chemical Reaction Networks David Angeli, Patrick De not approach the boundary of this orthant. For chemical reaction networks and other models in biology as well as sufficient conditions for of chemical species in reaction networks, and the applicability

  20. A Petri Net Approach to Persistence Analysis in Chemical Reaction Networks

    E-Print Network [OSTI]

    Sontag, Eduardo

    A Petri Net Approach to Persistence Analysis in Chemical Reaction Networks David Angeli, Patrick De not approach the boundary of this orthant. For chemical reaction networks and other models in biology as well as sufficient conditions for persistence of chemical species in reaction networks

  1. A New Approach in Supply Chain Design: studies in reverse logistics and nonprofit settings

    E-Print Network [OSTI]

    Berenguer Falguera, Gemma

    2012-01-01

    integrated forward/reverse logistics network design.Design: studies in reverse logistics and nonprofit settingsDesign: studies in reverse logistics and nonprofit settings

  2. Metal precipitation at grain boundaries in silicon: Dependence on grain boundary character and dislocation decoration

    E-Print Network [OSTI]

    Metal precipitation at grain boundaries in silicon: Dependence on grain boundary character are combined to determine the dependence of metal silicide precipitate formation on grain boundary character and microstructure in multicrystalline silicon mc-Si . Metal silicide precipitate decoration is observed to increase

  3. Boundary conditions for the subdiffusion equation

    SciTech Connect (OSTI)

    Shkilev, V. P.

    2013-04-15

    The boundary conditions for the subdiffusion equations are formulated using the continuous-time random walk model, as well as several versions of the random walk model on an irregular lattice. It is shown that the boundary conditions for the same equation in different models have different forms, and this difference considerably affects the solutions of this equation.

  4. 2001 TRAFFIC ZONE BOUNDARIES Zone Numbers

    E-Print Network [OSTI]

    Toronto, University of

    2001 TRAFFIC ZONE BOUNDARIES Zone Numbers & Detailed Definitions #12;2001 TRAFFIC ZONE BOUNDARIES of Toronto Joint Program in Transportation January 2003 #12;PREFACE This report presents the 2001 traffic zone numbers by local municipalities in the 2001 TTS survey area. The second part presents detailed

  5. Design Editorial Design Intent

    E-Print Network [OSTI]

    Papalambros, Panos

    Journal of Mechanical Design Editorial Design Intent Is this paper suitable for JMD of criteria to answer the question. As editor of JMD, apart from the obvious criteria of quality and research assumed my editorial duties is the paper's design intent. It was in that spirit that I wrote the Design

  6. Environmental boundaries to energy development

    SciTech Connect (OSTI)

    Trivelpiece, A.W.

    1989-01-01

    Public concern about the environment, health and safety consequences of energy technology has been growing steadily for more than two decades in the United States. This concern forms an important boundary condition as the United States seeks to develop a new National Energy Strategy. Furthermore, the international aspects of the energy/environment interface such as acid rain global climate change and stratospheric ozone depletion are very prominent in US thinking. In fact, the energy systems of the world are becoming more closely coupled environmentally and otherwise. Now where is this coupling more important than that between the industrialized and developing world; the choices made by each will have profound effects on the other. The development of energy technologies compatible with both economic growth and improving and sustaining environmental quality represents a major R D challenge to the US and USSR. Decision about adoption of new technology and R D priorities can be improved by better measurements of how energy sources and uses are changing throughout the world and better methods to project the potential consequences of these decisions. Such projection require understanding relative risks of alternating existing and evolving technologies. All of these R D areas, technology improvement energy system monitoring and projection and comparative risk assessment are the topics of this seminar. Progress in each may be enhanced by collaboration and cooperation between our two countries. 7 refs., 27 figs., 5 tabs.

  7. Sensor networks for social networks

    E-Print Network [OSTI]

    Farry, Michael P. (Michael Patrick)

    2006-01-01

    This thesis outlines the development of software that makes use of Bayesian belief networks and signal processing techniques to make meaningful inferences about real-world phenomena using data obtained from sensor networks. ...

  8. Views of wireless network systems.

    SciTech Connect (OSTI)

    Young, William Frederick; Duggan, David Patrick

    2003-10-01

    Wireless networking is becoming a common element of industrial, corporate, and home networks. Commercial wireless network systems have become reliable, while the cost of these solutions has become more affordable than equivalent wired network solutions. The security risks of wireless systems are higher than wired and have not been studied in depth. This report starts to bring together information on wireless architectures and their connection to wired networks. We detail information contained on the many different views of a wireless network system. The method of using multiple views of a system to assist in the determination of vulnerabilities comes from the Information Design Assurance Red Team (IDART{trademark}) Methodology of system analysis developed at Sandia National Laboratories.

  9. Networks in Buildings: Which Path Forward?

    SciTech Connect (OSTI)

    Nordman, Bruce

    2008-08-17

    To date, digital networks have principally been installed for connecting information technology devices, with more modest use in consumer electronics, security, and large building control systems. The next 20 years will see much greater deployment of networks in buildings of all types, and across all end uses. Most of these are likely to be introduced primarily for reasons other than energy efficiency, and add energy use for network interfaces and network products. Widespread networking could easily lead to increased energy use, and experience with IT and CE networks suggests this may be likely. Active engagement by energy efficiency professionals in the architecture and design of future networks could lead to their being a large and highly cost-effective tool for efficiency. However, network standards are complex and take many years to develop and negotiate so that lack of action on this in the near term may foreclose important opportunities for years or decades to come. Digital networks need to be common globally, providing another challenge to building systems and elements that are more commonly designed only for national or regional markets. Key future networks are lighting, climate control, and security/presence. This paper reviews some examples of past network designs and use and the lessons they hold for future building networks. It also highlights key needed areas for research, policy, and standards development.

  10. Outline Overview Design Principles Key Points Design Principles

    E-Print Network [OSTI]

    Almulhem, Ahmad

    Engineering Department, KFUPM Spring 2008 Ahmad Almulhem - Network Security Engineering - 2008 1 / 12 #12-Safe Defaults Economy of Mechanism Complete Mediation Open Design Separation of Privilege Least Common Mechanism Psychological Acceptability 3 Key Points Ahmad Almulhem - Network Security Engineering - 2008 2 / 12 #12;Outline

  11. MOBILE FLEXIBLE NETWORKS: THE CHALLENGES AHEAD Merouane Debbah

    E-Print Network [OSTI]

    Boyer, Edmond

    MOBILE FLEXIBLE NETWORKS: THE CHALLENGES AHEAD M´erouane Debbah (Invited Paper) Supelec, 3 rue framework of Mobile Flexible Networks is to design self-organizing secure networks where terminals and base into a telecommunication network and the car users into terminals and you will get what is known as Mobile Flexible

  12. Network Vulnerability to Single, Multiple, and Probabilistic Physical Attacks

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    , such as an Electromagnetic Pulse (EMP) attack. Large- scale disasters are likely to destroy network equipment and to severely--Network survivability, geographic networks, network design, Electromagnetic Pulse (EMP), computational geometry. I, such as an Electromagnetic Pulse (EMP) attack, as well as natural disasters, such as earth- quakes, hurricanes or floods [1

  13. Information Systems Analysis and Design CSC340 2003 John Mylopoulos Database Design --1

    E-Print Network [OSTI]

    Mylopoulos, John

    . Database Design Databases and DBMSDatabases and DBMS Data Models, Hierarchical, Network, RelationalData Models, Hierarchical, Network, Relational Database DesignDatabase Design Restructuring an ER schema, for building and accessing a database e.g., the relational model offers relations (tables) as data structure

  14. ARM - Field Campaign - Boundary Layer CO2 Using CW Lidar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01) (See22, 2012IIIAtlanticMarine BoundarygovCampaignsBoundary

  15. ARM - Field Campaign - Lower Atmospheric Boundary Layer Experiment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01)govCampaignsFIRE-Arctic-govCampaignsLower Atmospheric Boundary

  16. Investigating the Energy Consumption of a Wireless Network Interface in an Ad Hoc Networking

    E-Print Network [OSTI]

    Sirer, Emin Gun

    Investigating the Energy Consumption of a Wireless Network Interface in an Ad Hoc Networking Environment Laura Marie Feeney, Martin Nilsson Abstract--Energy-aware design and evaluation of network protocols re- quires knowledge of the energy consumption behavior of actual wireless interfaces. But little

  17. Energy-Aware Weight Assignment Framework for Circuit Oriented GMPLS Networks

    E-Print Network [OSTI]

    Switching (GMPLS) backbone networks, where optical technologies allow to design "circuit switching" network. Overall, each element can operate at several "power-states", corresponding to different switching weight assignment policy favours a consistent reduction of the network power consumption, without

  18. Design Optimization of Structural Health Monitoring Systems

    SciTech Connect (OSTI)

    Flynn, Eric B.

    2014-03-06

    Sensor networks drive decisions. Approach: Design networks to minimize the expected total cost (in a statistical sense, i.e. Bayes Risk) associated with making wrong decisions and with installing maintaining and running the sensor network itself. Search for optimal solutions using Monte-Carlo-Sampling-Adapted Genetic Algorithm. Applications include structural health monitoring and surveillance.

  19. New Boundaries for the B-Model

    E-Print Network [OSTI]

    Bergman, Aaron

    2008-01-01

    Witten couples the open topological B-model to a holomorphic vector bundle by adding to the boundary of the worldsheet a Wilson loop for an integrable connection on the bundle. Using the descent procedure for boundary vertex operators in this context, I generalize this construction to write a worldsheet coupling for a graded vector bundle with an integrable superconnection. I then compute the open string vertex operators between two such boundaries. A theorem of J. Block gives that this is equivalent to coupling the B-model to an arbitrary object in the derived category.

  20. Design for manufacturability Design verification

    E-Print Network [OSTI]

    Patel, Chintan

    ITRS Design #12;Design · Design for manufacturability · Design verification #12;Design for Manufacturability · Architecture challenges · Logic and circuit challenges · Layout and physical design challenges · Expected to be the source of multiple DFM challenges · Invest in variability reduction or design

  1. A FREE BOUNDARY PROBLEM ARISING FROM SEGREGATION ...

    E-Print Network [OSTI]

    2013-06-18

    In this work, we show how to obtain a free boundary problem as the limit of a fully non linear elliptic .... b) to find the solution for a optimal partition problem.

  2. PRE-PRECIPITATION PHENOMENA AT GRAIN BOUNDARIES

    E-Print Network [OSTI]

    Briceno-Valero, J.

    2010-01-01

    13820 DE82 0 1 2 7 9 4 PRE-PRECIPITATION PHENOMENA AT GRAINof any evidence suggesting precipitation has occurred. Theand grain boundary precipitation have shown (1) that there

  3. Evaluating the SDN control traffic in large ISP networks

    E-Print Network [OSTI]

    the benign "ecosystem" of a large datacenter, where the network design is simplified by the adoption networks could lead to rethink the WAN as a kind of distributed datacenter. Many solutions have been

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

    E-Print Network [OSTI]

    Ambike, Ajit Dilip

    2004-11-15

    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 ...

  5. Applying the repeated game framework to multiparty networked applications

    E-Print Network [OSTI]

    Afergan, Michael Moïse

    2005-01-01

    This thesis presents repeated game analysis as an important and practical tool for networked application and protocol designers. Incentives are a potential concern for a large number of networked applications. Well-studied ...

  6. Cognitive Radio Networks as Sensor Networks

    E-Print Network [OSTI]

    Bandari, Dorna; Yang, Seung R.; Zhao, Yue; Pottie, Gregory

    2007-01-01

    assuming the cognitive radios know their own coordinates.Networked Sensing Cognitive Radio Networks As SensorIntroduction: Cognitive Radio (CR) Networks The Need For

  7. Suppression of Grain Boundaries in Graphene Growth on Superstructured...

    Office of Scientific and Technical Information (OSTI)

    Suppression of Grain Boundaries in Graphene Growth on Superstructured Mn-Cu(111) Surface Prev Next Title: Suppression of Grain Boundaries in Graphene Growth on...

  8. Heat content asymptotics with transmittal and transmission boundary conditions

    E-Print Network [OSTI]

    Peter Gilkey; Klaus Kirsten

    2002-06-14

    We study the heat content asymptotics on a Riemannian manifold with smoooth boundary defined by Dirichlet, Neumann, transmittal and transmission boundary conditions.

  9. Singular perturbation problem in boundary/fractional combustion

    E-Print Network [OSTI]

    2015-08-18

    reaction-diffusion equation, where the reaction term is of combustion type. ... Free boundary problem, combustion theory, boundary reaction- diffusion, fractional ...

  10. EA-1973: Kootenai River Restoration at Bonners Ferry, Boundary...

    Energy Savers [EERE]

    73: Kootenai River Restoration at Bonners Ferry, Boundary County, Idaho EA-1973: Kootenai River Restoration at Bonners Ferry, Boundary County, Idaho Summary Bonneville Power...

  11. Technoeconomic Boundary Analysis of Biological Pathways to Hydrogen...

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

    Boundary Analysis of Biological Pathways to Hydrogen Production Technoeconomic Boundary Analysis of Biological Pathways to Hydrogen Production Report documenting the biological and...

  12. Behaviour of boundary functions for quantum billiards

    E-Print Network [OSTI]

    A. Bäcker; S. Fürstberger; R. Schubert; F. Steiner

    2002-10-16

    We study the behaviour of the normal derivative of eigenfunctions of the Helmholtz equation inside billiards with Dirichlet boundary condition. These boundary functions are of particular importance because they uniquely determine the eigenfunctions inside the billiard and also other physical quantities of interest. Therefore they form a reduced representation of the quantum system, analogous to the Poincar\\'e section of the classical system. For the normal derivatives we introduce an equivalent to the standard Green function and derive an integral equation on the boundary. Based on this integral equation we compute the first two terms of the mean asymptotic behaviour of the boundary functions for large energies. The first term is universal and independent of the shape of the billiard. The second one is proportional to the curvature of the boundary. The asymptotic behaviour is compared with numerical results for the stadium billiard, different limacon billiards and the circle billiard, and good agreement is found. Furthermore we derive an asymptotic completeness relation for the boundary functions.

  13. Physics design of the NSTX UpgradePhysics design of the NSTX Upgrade Jon Menard, PPPL

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    engineering design of the upgrade, systematic free-boundary equilibrium calculations have been performedPhysics design of the NSTX UpgradePhysics design of the NSTX Upgrade Jon Menard, PPPL NSTX Program Dominion U ORNL PPPL PSI Princeton U Purdue U SNL Think Tank, Inc. UC Davis UC Irvine UCLA UCSD U Colorado

  14. Urban Wireless Community Networks: Challenges and Solutions for Smart City Communications

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Urban Wireless Community Networks: Challenges and Solutions for Smart City Communications Renato Lo science that can guide the design of the future communication space for smart cities and beyond; Wireless communication Keywords Wireless Community Networks; Smart Urban Environments; Crowd Design

  15. Control of collective network chaos

    SciTech Connect (OSTI)

    Wagemakers, Alexandre, E-mail: alexandre.wagemakers@urjc.es; Sanjuán, Miguel A. F., E-mail: miguel.sanjuan@urjc.es [Departamento de Física, Universidad Rey Juan Carlos, Tulipán s/n, 28933 Móstoles, Madrid (Spain); Barreto, Ernest, E-mail: ebarreto@gmu.edu; So, Paul, E-mail: paso@gmu.edu [School of Physics, Astronomy, and Computational Sciences and The Krasnow Institute for Advanced Study, George Mason University, Fairfax, Virginia 22030 (United States)

    2014-06-01

    Under certain conditions, the collective behavior of a large globally-coupled heterogeneous network of coupled oscillators, as quantified by the macroscopic mean field or order parameter, can exhibit low-dimensional chaotic behavior. Recent advances describe how a small set of “reduced” ordinary differential equations can be derived that captures this mean field behavior. Here, we show that chaos control algorithms designed using the reduced equations can be successfully applied to imperfect realizations of the full network. To systematically study the effectiveness of this technique, we measure the quality of control as we relax conditions that are required for the strict accuracy of the reduced equations, and hence, the controller. Although the effects are network-dependent, we show that the method is effective for surprisingly small networks, for modest departures from global coupling, and even with mild inaccuracy in the estimate of network heterogeneity.

  16. Transport Layer Approaches for Improving Idle Energy in Challenged Sensor Networks

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    Transport Layer Approaches for Improving Idle Energy in Challenged Sensor Networks Yong Wang, Chieh Terms Design, Performance Keywords DTN, challenged sensor networks, idle energy, transport protocol, the study of energy efficient networking solutions in sensor networks has been focusing on networks

  17. An XG-PON Module for the NS-3 Network Simulator Xiuchao Wu, Kenneth N. Brown,

    E-Print Network [OSTI]

    Sreenan, Cormac J.

    to end users. FTTx (Fiber To The Home/Building/Curb, etc.) networks based on Passive Optical Network (PON.b.payne@btinternet.com ABSTRACT 10-Gigabit-capable Passive Optical Network (XG-PON), one of the latest standards of optical access Algorithm, Design, Performance Keywords Passive Optical Network, XG-PON, Internet Access Net- work, Network

  18. Integrated Simulations for Multi-Component Analysis of Gas Turbines : RANS Boundary Conditions

    E-Print Network [OSTI]

    Kim, Sangho

    Integrated Simulations for Multi-Component Analysis of Gas Turbines : RANS Boundary Conditions 94305, U.S.A The aero-thermal computation of the flow path of an entire gas turbine engine can used in the analysis of single components of the gas turbine engines as an aid in the design process

  19. Preprint of the paper "A Boundary Element Numerical Approach for Earthing Grid Computation"

    E-Print Network [OSTI]

    Colominas, Ignasi

    ~na, SPAIN Abstract Analysis and design of substation earthing involves computing the equivalent re- sistance in the margin of error [4]. A Boundary Element approach for the numerical computation of substation grounding introduced in the BEM formulation to reduce computational cost for speci#12;c choices of the test and trial

  20. Little Science Confronts the Data Deluge: Habitat Ecology, Embedded Sensor Networks, and Digital Libraries

    E-Print Network [OSTI]

    Borgman, C L; Wallis, J C; Enyedy, N

    2006-01-01

    Principles of embedded networked systems design. Cambridge,2006). These are systems of sensors that are embedded in the

  1. High performance RF MEMS metal-contact switches and switching networks

    E-Print Network [OSTI]

    Patel, Chirag D.; Patel, Chirag D.

    2012-01-01

    3.2.1 Switch Overview . . . . . . . . . . . . . . . . . . .MEMS Switch and Networks . . . . . . . . . . . . . . . . . .4.1 Switch Design . . . . . . . . . . . . . . . . . . 4.2

  2. Biomass Rapid Analysis Network (BRAN)

    SciTech Connect (OSTI)

    Not Available

    2003-10-01

    Helping the emerging biotechnology industry develop new tools and methods for real-time analysis of biomass feedstocks, process intermediates and The Biomass Rapid Analysis Network is designed to fast track the development of modern tools and methods for biomass analysis to accelerate the development of the emerging industry. The network will be led by industry and organized and coordinated through the National Renewable Energy Lab. The network will provide training and other activities of interest to BRAN members. BRAN members will share the cost and work of rapid analysis method development, validate the new methods, and work together to develop the training for the future biomass conversion workforce.

  3. Entanglement Distribution in Optical Networks

    E-Print Network [OSTI]

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

    2014-09-21

    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.

  4. Policy Research Working Paper 5710 Crossing Boundaries

    E-Print Network [OSTI]

    Gertz, Michael

    Development Team & Poverty Reduction and Economic Management Network Poverty Reduction and Equity June 2011 and Rural Development Team, Development Research Group; and the Poverty Reduction and Equity, Poverty

  5. The Network Completion Problem: Inferring Missing Nodes and Edges in Networks

    SciTech Connect (OSTI)

    Kim, M; Leskovec, J

    2011-11-14

    Network structures, such as social networks, web graphs and networks from systems biology, play important roles in many areas of science and our everyday lives. In order to study the networks one needs to first collect reliable large scale network data. While the social and information networks have become ubiquitous, the challenge of collecting complete network data still persists. Many times the collected network data is incomplete with nodes and edges missing. Commonly, only a part of the network can be observed and we would like to infer the unobserved part of the network. We address this issue by studying the Network Completion Problem: Given a network with missing nodes and edges, can we complete the missing part? We cast the problem in the Expectation Maximization (EM) framework where we use the observed part of the network to fit a model of network structure, and then we estimate the missing part of the network using the model, re-estimate the parameters and so on. We combine the EM with the Kronecker graphs model and design a scalable Metropolized Gibbs sampling approach that allows for the estimation of the model parameters as well as the inference about missing nodes and edges of the network. Experiments on synthetic and several real-world networks show that our approach can effectively recover the network even when about half of the nodes in the network are missing. Our algorithm outperforms not only classical link-prediction approaches but also the state of the art Stochastic block modeling approach. Furthermore, our algorithm easily scales to networks with tens of thousands of nodes.

  6. E ective boundary conditions for laminar ows over periodic rough boundaries

    E-Print Network [OSTI]

    Achdou, Yves

    E#27;ective boundary conditions for laminar #29;ows over periodic rough boundaries Yves Achdou #3 are proposed for a laminar #29;ow over a rough wall with periodic roughness elements. These e#27;ective is such an approach ? In this paper, we wish to answer these questions for laminar #29;ows over periodic rough walls

  7. Surface and grain boundary scattering in nanometric Cu thin films: A quantitative analysis including twin boundaries

    SciTech Connect (OSTI)

    Barmak, Katayun [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 and Department of Materials Science and Engineering and Materials Research Science and Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Darbal, Amith [Department of Materials Science and Engineering and Materials Research Science and Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 (United States); Ganesh, Kameswaran J.; Ferreira, Paulo J. [Materials Science and Engineering, The University of Texas at Austin, 1 University Station, Austin, Texas 78712 (United States); Rickman, Jeffrey M. [Department of Materials Science and Engineering and Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015 (United States); Sun, Tik; Yao, Bo; Warren, Andrew P.; Coffey, Kevin R., E-mail: kb2612@columbia.edu [Department of Materials Science and Engineering, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816 (United States)

    2014-11-01

    The relative contributions of various defects to the measured resistivity in nanocrystalline Cu were investigated, including a quantitative account of twin-boundary scattering. It has been difficult to quantitatively assess the impact twin boundary scattering has on the classical size effect of electrical resistivity, due to limitations in characterizing twin boundaries in nanocrystalline Cu. In this study, crystal orientation maps of nanocrystalline Cu films were obtained via precession-assisted electron diffraction in the transmission electron microscope. These orientation images were used to characterize grain boundaries and to measure the average grain size of a microstructure, with and without considering twin boundaries. The results of these studies indicate that the contribution from grain-boundary scattering is the dominant factor (as compared to surface scattering) leading to enhanced resistivity. The resistivity data can be well-described by the combined Fuchs–Sondheimer surface scattering model and Mayadas–Shatzkes grain-boundary scattering model using Matthiessen's rule with a surface specularity coefficient of p?=?0.48 and a grain-boundary reflection coefficient of R?=?0.26.

  8. Wireless boundary monitor system and method

    DOE Patents [OSTI]

    Haynes, Howard D. (Knoxville, TN); Ayers, Curtis W. (Kingston, TN)

    1997-01-01

    A wireless boundary monitor system used to monitor the integrity of a boundary surrounding an area uses at least two housings having at least one transmitting means for emitting ultrasonic pressure waves to a medium. Each of the housings has a plurality of receiving means for sensing the pressure waves in the medium. The transmitting means and the receiving means of each housing are aimable and communicably linked. At least one of the housings is equipped with a local alarm means for emitting a first alarm indication whereby, when the pressure waves propagating from a transmitting means to a receiving means are sufficiently blocked by an object a local alarm means or a remote alarm means or a combination thereof emit respective alarm indications. The system may be reset either manually or automatically. This wireless boundary monitor system has useful applications in both indoor and outdoor environments.

  9. Wireless boundary monitor system and method

    DOE Patents [OSTI]

    Haynes, H.D.; Ayers, C.W.

    1997-12-09

    A wireless boundary monitor system used to monitor the integrity of a boundary surrounding an area uses at least two housings having at least one transmitting means for emitting ultrasonic pressure waves to a medium. Each of the housings has a plurality of receiving means for sensing the pressure waves in the medium. The transmitting means and the receiving means of each housing are aimable and communicably linked. At least one of the housings is equipped with a local alarm means for emitting a first alarm indication whereby, when the pressure waves propagating from a transmitting means to a receiving means are sufficiently blocked by an object a local alarm means or a remote alarm means or a combination thereof emit respective alarm indications. The system may be reset either manually or automatically. This wireless boundary monitor system has useful applications in both indoor and outdoor environments. 4 figs.

  10. Resonant transitions due to changing boundaries

    E-Print Network [OSTI]

    F. Anzà; A. Messina; B. Militello

    2015-01-10

    The problem of a particle confined in a box with moving walls is studied, focusing on the case of small perturbations which do not alter the shape of the boundary (\\lq pantography\\rq). The presence of resonant transitions involving the natural transition frequencies of the system and the Fourier transform of the velocity of the walls of the box is brought to the light. The special case of a pantographic change of a circular box is analyzed in dept, also bringing to light the fact that the movement of the boundary cannot affect the angular momentum of the particle.

  11. Master Thesis Combined Neural Networks and

    E-Print Network [OSTI]

    Cambridge, University of

    Master Thesis Combined Neural Networks and Genetic Algorithms as a method for reducing redundancyNetworksandGentworksandGentworksandGentworksandGeneticAlgorithmseticAlgorithmseticAlgorithmseticAlgorithms asaasaasaasamethodformethodformethodformethodforreducingredundancyinsteeldesignreducingredundancyinsteeldesignreducingredundancyinsteeldesignreducingredundancyinsteeldesign 2008MinSungJoo2008MinSungJoo2008MinSungJoo2008MinSungJoo #12; Combined Neural Networks and Genetic Algorithms as a method for reducing redundancy in steel design #12;Combined Neural Networks

  12. Sustainable Supply Chain Networks Sustainable Cities

    E-Print Network [OSTI]

    Nagurney, Anna

    SupplyChainNetworkDesign-nagurney-nagurney.pdf · "Environmental Impact Assessment of Transportation Networks with Degradable Links in an Era of Climate Change," A is Sustainability? The general definition of sustainability is development that meets the needs of the present Environment and Development (WCED) (1987)). Anna Nagurney Sustainability #12;The Debates Continue There are

  13. Real-time control over networks 

    E-Print Network [OSTI]

    Ji, Kun

    2007-09-17

    issues regarding control over networks and can be the guidelines of NCS design. A single actuator ball magnetic-levitation (maglev) system is implemented as a test bed for the real-time control over networks to illustrate and verify the theoretical...

  14. A flexible high-density sensor network

    E-Print Network [OSTI]

    Mistree, Behram Farrokh Thomas

    2008-01-01

    This thesis explores building and deploying a scalable electronic sensate skin that was designed as a dense sensor network. Our skin is built from small (1" x 1") rigid circuit boards attached to their neighbors with ...

  15. Fair Scheduling in Networks Through Packet Election

    E-Print Network [OSTI]

    Jagabathula, Srikanth

    We consider the problem of designing a fair scheduling algorithm for discrete-time constrained queuing networks. Each queue has dedicated exogenous packet arrivals. There are constraints on which queues can be served ...

  16. Application of network coding for VLSI routing 

    E-Print Network [OSTI]

    Nemade, Nikhil Pandit

    2009-05-15

    This thesis studies the applications of the network coding technique for intercon- nect optimization and improving the routability of Very-large-scale integration (VLSI) designs. The goal of the routing process is to connect ...

  17. Transactional Network Platform: Applications

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Lutes, Robert G.; Ngo, Hung; Underhill, Ronald M.

    2013-10-31

    In FY13, Pacific Northwest National Laboratory (PNNL) with funding from the Department of Energy’s (DOE’s) Building Technologies Office (BTO) designed, prototyped and tested a transactional network platform to support energy, operational and financial transactions between any networked entities (equipment, organizations, buildings, grid, etc.). Initially, in FY13, the concept demonstrated transactions between packaged rooftop air conditioners and heat pump units (RTUs) and the electric grid using applications or "agents" that reside on the platform, on the equipment, on a local building controller or in the Cloud. The transactional network project is a multi-lab effort with Oakridge National Laboratory (ORNL) and Lawrence Berkeley National Laboratory (LBNL) also contributing to the effort. PNNL coordinated the project and also was responsible for the development of the transactional network (TN) platform and three different applications associated with RTUs. This document describes two applications or "agents" in details, and also summarizes the platform. The TN platform details are described in another companion document.

  18. Planetary Boundary Layer from AERI and MPL

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

    Sawyer, Virginia

    The distribution and transport of aerosol emitted to the lower troposphere is governed by the height of the planetary boundary layer (PBL), which limits the dilution of pollutants and influences boundary-layer convection. Because radiative heating and cooling of the surface strongly affect the PBL top height, it follows diurnal and seasonal cycles and may vary by hundreds of meters over a 24-hour period. The cap the PBL imposes on low-level aerosol transport makes aerosol concentration an effective proxy for PBL height: the top of the PBL is marked by a rapid transition from polluted, well-mixed boundary-layer air to the cleaner, more stratified free troposphere. Micropulse lidar (MPL) can provide much higher temporal resolution than radiosonde and better vertical resolution than infrared spectrometer (AERI), but PBL heights from all three instruments at the ARM SGP site are compared to one another for validation. If there is agreement among them, the higher-resolution remote sensing-derived PBL heights can accurately fill in the gaps left by the low frequency of radiosonde launches, and thus improve model parameterizations and our understanding of boundary-layer processes.

  19. Planetary Boundary Layer from AERI and MPL

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

    Sawyer, Virginia

    2014-02-13

    The distribution and transport of aerosol emitted to the lower troposphere is governed by the height of the planetary boundary layer (PBL), which limits the dilution of pollutants and influences boundary-layer convection. Because radiative heating and cooling of the surface strongly affect the PBL top height, it follows diurnal and seasonal cycles and may vary by hundreds of meters over a 24-hour period. The cap the PBL imposes on low-level aerosol transport makes aerosol concentration an effective proxy for PBL height: the top of the PBL is marked by a rapid transition from polluted, well-mixed boundary-layer air to the cleaner, more stratified free troposphere. Micropulse lidar (MPL) can provide much higher temporal resolution than radiosonde and better vertical resolution than infrared spectrometer (AERI), but PBL heights from all three instruments at the ARM SGP site are compared to one another for validation. If there is agreement among them, the higher-resolution remote sensing-derived PBL heights can accurately fill in the gaps left by the low frequency of radiosonde launches, and thus improve model parameterizations and our understanding of boundary-layer processes.

  20. Determining environmental boundaries: asynchronous communication and physical

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    to cooperatively locate the boundary of a given environmental function in two space dimensions using a combi this substitution is successfully taking place are de-mining operations [7], military urban operations [20 [23], or energy-minimizing curve. This process simulates elastic material which can dynamically

  1. Origin of morphotropic phase boundaries in ferroelectrics

    E-Print Network [OSTI]

    Wu, Zhigang

    , Peter Liermann3 & Zhigang Wu4 A piezoelectric material is one that generates a voltage in response to a mechanical strain (and vice versa). The most useful piezo- electric materials display a transition region boundary under pressure. The results are consistent with first- principles theoretical predictions3

  2. Thick diffusion limit boundary layer test problems

    SciTech Connect (OSTI)

    Bailey, T. S.; Warsa, J. S.; Chang, J. H.; Adams, M. L.

    2013-07-01

    We develop two simple test problems that quantify the behavior of computational transport solutions in the presence of boundary layers that are not resolved by the spatial grid. In particular we study the quantitative effects of 'contamination' terms that, according to previous asymptotic analyses, may have a detrimental effect on the solutions obtained by both discontinuous finite element (DFEM) and characteristic-method (CM) spatial discretizations, at least for boundary layers caused by azimuthally asymmetric incident intensities. Few numerical results have illustrated the effects of this contamination, and none have quantified it to our knowledge. Our test problems use leading-order analytic solutions that should be equal to zero in the problem interior, which means the observed interior solution is the error introduced by the contamination terms. Results from DFEM solutions demonstrate that the contamination terms can cause error propagation into the problem interior for both orthogonal and non-orthogonal grids, and that this error is much worse for non-orthogonal grids. This behavior is consistent with the predictions of previous analyses. We conclude that these boundary layer test problems and their variants are useful tools for the study of errors that are introduced by unresolved boundary layers in diffusive transport problems. (authors)

  3. The Importance of Carbon Footprint Estimation Boundaries

    E-Print Network [OSTI]

    Kammen, Daniel M.

    The Importance of Carbon Footprint Estimation Boundaries H . S C O T T M A T T H E W S , C H R I and organizations are pursuing "carbon footprint" projects to estimate their own contributions to global climate change. Protocol definitions from carbon registries help organizations analyze their footprints

  4. Vortex rings impinging on permeable boundaries

    E-Print Network [OSTI]

    Mujal-Colilles, Anna; Dalziel, Stuart B.; Bateman, Allen

    2015-01-17

    of the boundary layer inside 548 the porous media or the flux exchange between the downstream and upstream sides of the 549 grid. 550 Recalling that one of the main differences between our experiments and the thin grid 551 research already published...

  5. Lateral boundary errors in regional numerical weather

    E-Print Network [OSTI]

    ?umer, Slobodan

    Lateral boundary errors in regional numerical weather prediction models Author: Ana Car Advisor, they describe evolution of atmospher - weather forecast. Every NWP model solves the same system of equations (1: assoc. prof. dr. Nedjeljka Zagar January 5, 2015 Abstract Regional models are used in many national

  6. Accuracy Requirements for Rural Land Parcel Boundaries

    E-Print Network [OSTI]

    Stock, Kristin

    Accuracy Requirements for Rural Land Parcel Boundaries Kristin M. Stock School of Planning accuracy of about +/-0.2m. Utilities companies and local authorities in rural areas have more relaxed of Planning, Landscape Architecture and Surveying at Queensland University of Technology, and the Geodetic

  7. 1. Integrated Database 2. Boundary Analysis

    E-Print Network [OSTI]

    of research? Data storage needs Meta data: legacy information Data processing diagrams Pastures Ecological that change in response to these processes Key processes that act as "drivers" of the system Key ecosystem of physical, ecological, social, and political boundaries using geographic information system Hypothesis 2

  8. Title: Ontario Greenbelt Boundary File Data Creator /

    E-Print Network [OSTI]

    Title: Ontario Greenbelt Boundary File Data Creator / Copyright Owner: Ontario Ministry of Municipal Affairs and Housing Publisher: Ontario Ministry of Municipal Affairs and Housing Edition: N/A Versions: N/A Publication Date: N/A Coverage Date(s): N/A Updates: N/A Abstract: The Ontario Greenbelt

  9. Differential-Equation Based Absorbing Boundary Conditions

    E-Print Network [OSTI]

    Schneider, John B.

    Chapter 6 Differential-Equation Based Absorbing Boundary Conditions 6.1 Introduction A simple in the analysis of a wide range of FDTD-related topics. 6.2 The Advection Equation The wave equation that governs.2) The second form represents the equation in terms of an operator operating on Ez where the operator

  10. TRACKING DYNAMIC BOUNDARIES BY EVOLVING Tingting Jiang

    E-Print Network [OSTI]

    Tingting Jiang

    TRACKING DYNAMIC BOUNDARIES BY EVOLVING CURVES by Tingting Jiang Department of Computer Science Duke University Date: Approved: Carlo Tomasi, Supervisor Ron Parr Scott C. Schmidler Xiaobai Sun in the Department of Computer Science in the Graduate School of Duke University 2007 #12;ABSTRACT TRACKING DYNAMIC

  11. Elementary Differential Equations with Boundary Value Problems

    E-Print Network [OSTI]

    William F. Trench

    2014-02-24

    Dec 1, 2013 ... For more information, please contact jcostanz@trinity.edu. ..... (Laplace's Equation), the functions defining the boundary conditions on a given side of the rectangular .... change in heat of the object as its temperature changes from T0 to T is a(T ...... Let y be the angle measured from the rest position (vertically ...

  12. Robust Network Design: Formulations, Valid Inequalities, and ...

    E-Print Network [OSTI]

    2011-08-31

    Aug 31, 2011 ... energy supply, and telecommunications. .... ination for pairs of demand matrices and static as well as dynamic routing. ...... A detailed view on the additional gap closed in the root node for strategies (ii) and (iii) is given in.

  13. DESIGNING COMMUNICATION NETWORKS VIA HILBERT MODULAR FORMS

    E-Print Network [OSTI]

    Theory, the arithmetic examples are partic- ularly interesting: all Ramanujan graphs are super-expanders; but in addition the examples have many other useful properties, for example very good expansion constants

  14. FUNCTIONAL DESIGN DATA-FLOW NETWORKS

    E-Print Network [OSTI]

    Kienhuis, Bart

    , visualization, virtual reality) and in control (system identification, plant control, robotica). In some to be carried out in real time. Still other constraints may restrict implementation volume, power dissipation- over, even if they would have such capacities, low-power constraints might rule them out. Indeed

  15. 1 INTRODUCTION 2 2 NETWORK DESIGNS 3

    E-Print Network [OSTI]

    Yang, Jian

    plans, aircraft routes, crew pairings, gate assignments, maintenance schedules, food service plans such as aircraft, crew, maintenance facilities, airports, etc.; · Active interactions and close dependencies among company policies, business rules, and tight control by the Federal Aviation Administration (FAA

  16. Designing Incentives Toolkit Better Buildings Residential Network

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

    enough and what to incentivize. When aligned with program goals, incentives can be a very useful tool in achieving home energy upgrades. Definition Incentives provide motivation to...

  17. Incremental Network Design with Shortest Paths

    E-Print Network [OSTI]

    2013-01-11

    future time periods and thus may improve the total cost or value over the .... is whether the company can plan its future expansion in such a way that when it has ...

  18. The Continuous Time Service Network Design Problem

    E-Print Network [OSTI]

    2015-01-02

    ... School of Industrial & Systems Engineering, Georgia Institute of Technology, Atlanta, GA ... Fast shipping times (and low cost) are critical to the success of.

  19. The Science DMZ: A Network Design Pattern

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel: Name:Department ofThe DOEThe31,124Science DMZ:

  20. Energy Efficient Digital Networks

    E-Print Network [OSTI]

    Lanzisera, Steven

    2014-01-01

    equipment, market transformation for digital networks iimarket transformation of energy efficient digital networks.transformation activities. Table 7: Transforming the Network for Digital

  1. Groundwater Monitoring Network

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

    Groundwater Monitoring Network Groundwater Monitoring Network The network includes 92 natural sources, 102 regional aquifer wells, 41 intermediate-depth wells and springs, and 67...

  2. Optimization Modelling Example Design Implementation Conclusions A Structure-Conveying Modelling Language for

    E-Print Network [OSTI]

    Grothey, Andreas

    Optimization Modelling Example Design Implementation Conclusions A Structure-Conveying Modelling Languages for Mathematical Programming 3 An example problem from network design 4 Design of Structured, K. Woodsend Structure-Conveying Modelling Language #12;Optimization Modelling Example Design

  3. Controlling Across Complex Networks Emerging links between networks and control

    E-Print Network [OSTI]

    , and Electrical Engineering University of New Mexico, Albuquerque NM 87131. Sandia National Laboratories science, physics, and social science. Networks thus provide means to understand the interaction between infrastructure into their designs, by considering the impact of link capacity, latency, and packet loss

  4. Joint Energy Management and Resource Allocation in Rechargeable Sensor Networks

    E-Print Network [OSTI]

    Koksal, Can Emre

    Joint Energy Management and Resource Allocation in Rechargeable Sensor Networks Ren-Shiou Liu CSE@ece.osu.edu Abstract--Energy harvesting sensor platforms have opened up a new dimension to the design of network protocols. In order to sustain the network operation, the energy consumption rate cannot be higher than

  5. The Lee Center for Advanced Networking CALIFORNIA INSTITUTE OF TECHNOLOGY

    E-Print Network [OSTI]

    The Lee Center for Advanced Networking CALIFORNIA INSTITUTE OF TECHNOLOGY #12;2 t h e l e e c e n v e r v i e w Natural Information Networks 6 Sense and Respond Systems 10 The Architecture Market Research in the Lee Center 38 Radio Transmitters 40 High-Q for Photons 42 Better Network Design

  6. On Transport Layer Support for Peer-to-Peer Networks

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    On Transport Layer Support for Peer-to-Peer Networks Hung-Yun Hsieh and Raghupathy Sivakumar GNAN, 2004 #12;2 Transport Layer Support Existing peer-to-peer systems use transport layer protocols designed for client-server networks TCP is the predominant transport protocol used in peer-to- peer networks

  7. May 27, 2002 An Introduction to Neural Networks

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    May 27, 2002 An Introduction to Neural Networks Vincent Cheung Kevin Cannons Signal & Data Advisor: Dr. W. Kinsner #12;Cheung/Cannons 1 Neural Networks Outline Fundamentals Classes Design and Verification Results and Discussion Conclusion #12;Cheung/Cannons 2 Neural Networks What Are Artificial

  8. Research and Implementation of Computer Simulation System for Neural Networks

    E-Print Network [OSTI]

    Byrne, John H.

    Research and Implementation of Computer Simulation System for Neural Networks Chen, Houjin Yuan: The ability of a neural network to process information and to generate a specific pattern of electrical computer simulation system for neural networks was designed and implemented including system architecture

  9. Neural Pascal A Language for Neural Network Programming

    E-Print Network [OSTI]

    Gumm, H. Peter

    Neural Pascal A Language for Neural Network Programming H.Peter Gumm Dept. of Computer Science SUNY is an extension of object-oriented Pascal, designed to allow easy specification and simulation of neural networks through all elements of a linear datatype. 1. Introduction Neural network models are frequently visualized

  10. Energy Optimization of Subthreshold-Voltage Sensor Network Processors

    E-Print Network [OSTI]

    Dutta, Prabal

    network processor results. This design, accompanied by bulk-silicon solar cells for energy scavenging, hasEnergy Optimization of Subthreshold-Voltage Sensor Network Processors Leyla Nazhandali, Bo ZhaiV and be- low) lends itself well to the performance and energy demands of sensor network processors

  11. EXPERT CONTROL BASED ON NEURAL NETWORKS FOR CONTROLLING

    E-Print Network [OSTI]

    neural units in artificial neural networks (ANN), artificial neural network was used to develop a model of temperature model. The design of the network structure and transfer function was also discussed. Because growth in greenhouse climate. Temperature exerted significant effects on photosynthesis. The net

  12. Call for Papers ACM/Springer Mobile Networks & Applications (MONET)

    E-Print Network [OSTI]

    Chen, Min

    . Therefore, the design of energy efficiency network architecture & protocols is the key problem for green it is important to further explore the energy efficiency multi-base-station management in green mobile networks in Green Mobile Networks http://www.springer.com/engineering/signals/journal/**** Overview Global warming

  13. Hybrid immersed interface-immersed boundary methods for AC dielectrophoresis

    SciTech Connect (OSTI)

    Hossan, Mohammad Robiul [School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920 (United States); Department of Engineering and Physics, University of Central Oklahoma, Edmond, OK 73034-5209 (United States); Dillon, Robert [Department of Mathematics, Washington State University, Pullman, WA 99164-3113 (United States); Dutta, Prashanta, E-mail: dutta@mail.wsu.edu [School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920 (United States)

    2014-08-01

    Dielectrophoresis, a nonlinear electrokinetic transport mechanism, has become popular in many engineering applications including manipulation, characterization and actuation of biomaterials, particles and biological cells. In this paper, we present a hybrid immersed interface–immersed boundary method to study AC dielectrophoresis where an algorithm is developed to solve the complex Poisson equation using a real variable formulation. An immersed interface method is employed to obtain the AC electric field in a fluid media with suspended particles and an immersed boundary method is used for the fluid equations and particle transport. The convergence of the proposed algorithm as well as validation of the hybrid scheme with experimental results is presented. In this paper, the Maxwell stress tensor is used to calculate the dielectrophoretic force acting on particles by considering the physical effect of particles in the computational domain. Thus, this study eliminates the approximations used in point dipole methods for calculating dielectrophoretic force. A comparative study between Maxwell stress tensor and point dipole methods for computing dielectrophoretic forces are presented. The hybrid method is used to investigate the physics of dielectrophoresis in microfluidic devices using an AC electric field. The numerical results show that with proper design and appropriate selection of applied potential and frequency, global electric field minima can be obtained to facilitate multiple particle trapping by exploiting the mechanism of negative dielectrophoresis. Our numerical results also show that electrically neutral particles form a chain parallel to the applied electric field irrespective of their initial orientation when an AC electric field is applied. This proposed hybrid numerical scheme will help to better understand dielectrophoresis and to design and optimize microfluidic devices.

  14. The relationship between grain boundary structure, defect mobility, and grain boundary sink efficiency

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

    Uberuaga, Blas Pedro; Vernon, Louis J.; Martinez, Enrique; Voter, Arthur F.

    2015-03-13

    Nanocrystalline materials have received great attention due to their potential for improved functionality and have been proposed for extreme environments where the interfaces are expected to promote radiation tolerance. However, the precise role of the interfaces in modifying defect behavior is unclear. Using long-time simulations methods, we determine the mobility of defects and defect clusters at grain boundaries in Cu. We find that mobilities vary significantly with boundary structure and cluster size, with larger clusters exhibiting reduced mobility, and that interface sink efficiency depends on the kinetics of defects within the interface via the in-boundary annihilation rate of defects. Thus,more »sink efficiency is a strong function of defect mobility, which depends on boundary structure, a property that evolves with time. Further, defect mobility at boundaries can be slower than in the bulk, which has general implications for the properties of polycrystalline materials. Finally, we correlate defect energetics with the volumes of atomic sites at the boundary.« less

  15. Epidemic Percolation Networks, Epidemic Outcomes, and Interventions

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

    Kenah, Eben; Miller, Joel C.

    2011-01-01

    Epidemic percolation networks (EPNs) are directed random networks that can be used to analyze stochastic “Susceptible-Infectious-Removed” (SIR) and “Susceptible-Exposed-Infectious-Removed” (SEIR) epidemic models, unifying and generalizing previous uses of networks and branching processes to analyze mass-action and network-based S(E)IR models. This paper explains the fundamental concepts underlying the definition and use of EPNs, using them to build intuition about the final outcomes of epidemics. We then show how EPNs provide a novel and useful perspective on the design of vaccination strategies.

  16. Open Boundary Conditions for Dissipative MHD

    SciTech Connect (OSTI)

    Meier, E T

    2011-11-10

    In modeling magnetic confinement, astrophysics, and plasma propulsion, representing the entire physical domain is often difficult or impossible, and artificial, or 'open' boundaries are appropriate. A novel open boundary condition (BC) for dissipative MHD, called Lacuna-based open BC (LOBC), is presented. LOBC, based on the idea of lacuna-based truncation originally presented by V.S. Ryaben'kii and S.V. Tsynkov, provide truncation with low numerical noise and minimal reflections. For hyperbolic systems, characteristic-based BC (CBC) exist for separating the solution into outgoing and incoming parts. In the hyperbolic-parabolic dissipative MHD system, such separation is not possible, and CBC are numerically unstable. LOBC are applied in dissipative MHD test problems including a translating FRC, and coaxial-electrode plasma acceleration. Solution quality is compared to solutions using CBC and zero-normal derivative BC. LOBC are a promising new open BC option for dissipative MHD.

  17. Adaptive RTT-driven Transport-layer Flow and Error Control Protocol for QoS Guaranteed Image Transmission over Multi-hop Underwater Wireless Networks: Design, Implementation, and Analysis 

    E-Print Network [OSTI]

    Li, Jiahao

    2013-12-09

    With the rapid advances in data transmission over various advanced underwater acoustic networks, it is important to develop the efficient protocol to obtain a high data-rate with Quality of Service (QoS) guarantee requirements for acoustic wireless...

  18. Proteoglycan 4 metabolism and boundary lubrication of articular cartilage

    E-Print Network [OSTI]

    Schmidt, Tannin A.

    2006-01-01

    ability to act as boundary lubricants. Ann Rheum Dis 43:641-load-bearing boundary lubricant in the joint. Br J Rheumatolof the cartilage and lubricant. Arthritis Rheum 11:674-82,

  19. Cylinder kernel expansion of Casimir energy with a Robin boundary 

    E-Print Network [OSTI]

    Liu, Zhonghai

    2006-10-30

    We compute the Casimir energy of a massless scalar field obeying the Robin boundary condition on one plate and the Dirichlet boundary condition on another plate for two parallel plates with a separation of alpha. The ...

  20. Thermodynamic stability and implications of anisotropic boundary particles

    E-Print Network [OSTI]

    Siem, Ellen J. (Ellen Jane), 1979-

    2005-01-01

    (cont.) Generally, a boundary is nonplanar in the neighborhood of an attached particle--even when anisotropic interfacial free energies do not produce faceting-and maintains a icKy = 0 while the boundary particles maintain ...

  1. Ising Interfaces and Free Boundary Conditions

    E-Print Network [OSTI]

    Clément Hongler; Kalle Kytölä

    2011-10-17

    We study the interfaces arising in the two-dimensional Ising model at critical temperature, without magnetic field. We show that in the presence of free boundary conditions between plus and minus spins, the scaling limit of these interfaces can be described by a variant of SLE, called dipolar SLE(3). This generalizes a celebrated result of Chelkak and Smirnov and proves a conjecture of Bauer, Bernard and Houdayer. We mention two possible applications of our result.

  2. Understanding Packet Delivery Performance In Dense Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Berkeley, University of

    : an indoor office building, a habitat with moderate foliage, and an open parking lot. Our findings have networks. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Wireless interesting implications for the design and evaluation of routing and medium-access protocols for sensor

  3. Energy Efficiency of Future Networks Energy Efficient Transmission in

    E-Print Network [OSTI]

    Ulukus, Sennur

    Energy Efficiency of Future Networks Part 1: Energy Efficient Transmission in Classical Wireless #12;Goals Energy Efficiency: What it meant last decade; what it means today From a communication network design perspective what should we care about for energy efficient design of cellular

  4. Laminar boundary layers in convective heat transport

    E-Print Network [OSTI]

    Christian Seis

    2012-12-12

    We study Rayleigh-Benard convection in the high-Rayleigh-number and high-Prandtl-number regime, i.e., we consider a fluid in a container that is exposed to strong heating of the bottom and cooling of the top plate in the absence of inertia effects. While the dynamics in the bulk are characterized by a chaotic convective heat flow, the boundary layers at the horizontal container plates are essentially conducting and thus the fluid is motionless. Consequently, the average temperature exhibits a linear profile in the boundary layers. In this article, we rigorously investigate the average temperature and oscillations in the boundary layer via local bounds on the temperature field. Moreover, we deduce that the temperature profile is indeed essentially linear close to the horizontal container plates. Our results are uniform in the system parameters (e.g. the Rayleigh number) up to logarithmic correction terms. An important tool in our analysis is a new Hardy-type estimate for the convecting velocity field, which can be used to control the fluid motion in the layer. The bounds on the temperature field are derived with the help of local maximal regularity estimates for convection-diffusion equations.

  5. Laminar boundary layers in convective heat transport

    E-Print Network [OSTI]

    Seis, Christian

    2012-01-01

    We study Rayleigh-Benard convection in the high-Rayleigh-number and high-Prandtl-number regime, i.e., we consider a fluid in a container that is exposed to strong heating of the bottom and cooling of the top plate in the absence of inertia effects. While the dynamics in the bulk are characterized by a chaotic convective heat flow, the boundary layers at the horizontal container plates are essentially conducting and thus the fluid is motionless. Consequently, the average temperature exhibits a linear profile in the boundary layers. In this article, we rigorously investigate the average temperature and oscillations in the boundary layer via local bounds on the temperature field. Moreover, we deduce that the temperature profile is indeed essentially linear close to the horizontal container plates. Our results are uniform in the system parameters (e.g. the Rayleigh number) up to logarithmic correction terms. An important tool in our analysis is a new Hardy-type estimate for the convecting velocity field, which ca...

  6. Covert Communication Networks 

    E-Print Network [OSTI]

    Nix, Timothy Glen

    2013-08-02

    using shared keys assigned by the blender when a new jondo joins the crowd. Tor is the most popular anonymous communications system in use and is known as the second-generation onion router due to the fact that it is based on, and makes several modi... cations to the original onion routing design in terms of security, e - ciency, and deployability [17]. Tor uses a small set of trusted directory servers in order to distribute information about known onion routers in the network. In order to create a...

  7. Mesoscale coupled ocean-atmosphere feedbacks in boundary current systems

    E-Print Network [OSTI]

    Putrasahan, Dian Ariyani

    2012-01-01

    productive oceanic eastern boundary current, providing anCurrent System and the Kuroshio Extension uses OFES products for their oceanic

  8. Defining window-boundaries for genomic analyses using smoothing...

    Office of Scientific and Technical Information (OSTI)

    undesirable window boundary specifications, or highly correlated test statistics. We introduce a method for defining windows based on statistically guided...

  9. Correct traction boundary conditions in the indeterminate couple stress model

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba; Angela Madeo; Ingo Münch

    2015-04-02

    In this paper we consider the Grioli-Koiter-Mindlin-Toupin indeterminatecouple stress model. The main aim is to show that the traction boundary conditions were not yet completely deduced. As it turns out, and to our own surprise, restricting the boundary condition framework from the strain gradient models to the couple stress model does not reduce to Mindlin's set of accepted boundary conditions. We present therefore, for the first time the complete, consistent set of traction boundary conditions.

  10. Effects of Boundary Conditions on Single-File Pedestrian Flow

    E-Print Network [OSTI]

    Zhang, Jun; Seyfried, Armin

    2015-01-01

    In this paper we investigate effects of boundary conditions on one dimensional pedestrian flow which involves purely longitudinal interactions. Qualitatively, stop-and-go waves are observed under closed boundary condition and dissolve when the boundary is open. To get more detailed information the fundamental diagrams of the open and closed systems are compared using Voronoi-based measurement method. Higher maximal specific flow is observed from the pedestrian movement at open boundary condition.

  11. Nonuniqeness in a free boundary problem from combustion

    E-Print Network [OSTI]

    2014-10-31

    Nonuniqeness in a free boundary problem from combustion. Arshak Petrosyan joint with Aaron Yip. Department of Mathematics. Purdue University.

  12. Fusion for AdS/CFT boundary S-matrices

    E-Print Network [OSTI]

    Rafael I. Nepomechie; Rodrigo A. Pimenta

    2015-09-14

    We propose a fusion formula for AdS/CFT worldsheet boundary S-matrices. We show that, starting from the fundamental Y=0 boundary S-matrix, this formula correctly reproduces the two-particle bound-state boundary S-matrices.

  13. Testing outer boundary treatments for the Einstein equations

    E-Print Network [OSTI]

    Oliver Rinne; Lee Lindblom; Mark A. Scheel

    2007-07-25

    Various methods of treating outer boundaries in numerical relativity are compared using a simple test problem: a Schwarzschild black hole with an outgoing gravitational wave perturbation. Numerical solutions computed using different boundary treatments are compared to a `reference' numerical solution obtained by placing the outer boundary at a very large radius. For each boundary treatment, the full solutions including constraint violations and extracted gravitational waves are compared to those of the reference solution, thereby assessing the reflections caused by the artificial boundary. These tests use a first-order generalized harmonic formulation of the Einstein equations. Constraint-preserving boundary conditions for this system are reviewed, and an improved boundary condition on the gauge degrees of freedom is presented. Alternate boundary conditions evaluated here include freezing the incoming characteristic fields, Sommerfeld boundary conditions, and the constraint-preserving boundary conditions of Kreiss and Winicour. Rather different approaches to boundary treatments, such as sponge layers and spatial compactification, are also tested. Overall the best treatment found here combines boundary conditions that preserve the constraints, freeze the Newman-Penrose scalar Psi_0, and control gauge reflections.

  14. Mitigation of Malicious Attacks on Networks

    E-Print Network [OSTI]

    Schneider, Christian M; Andrade, Jose S; Havlin, Shlomo; Herrmann, Hans J; 10.1073/pnas.1009440108

    2011-01-01

    Terrorist attacks on transportation networks have traumatized modern societies. With a single blast, it has become possible to paralyze airline traffic, electric power supply, ground transportation or Internet communication. How and at which cost can one restructure the network such that it will become more robust against a malicious attack? We introduce a unique measure for robustness and use it to devise a method to mitigate economically and efficiently this risk. We demonstrate its efficiency on the European electricity system and on the Internet as well as on complex networks models. We show that with small changes in the network structure (low cost) the robustness of diverse networks can be improved dramatically while their functionality remains unchanged. Our results are useful not only for improving significantly with low cost the robustness of existing infrastructures but also for designing economically robust network systems.

  15. Local community extraction in directed networks

    E-Print Network [OSTI]

    Ning, Xuemei; Zhang, Shihua

    2015-01-01

    Network is a simple but powerful representation of real-world complex systems. Network community analysis has become an invaluable tool to explore and reveal the internal organization of nodes. However, only a few methods were directly designed for community-detection in directed networks. In this article, we introduce the concept of local community structure in directed networks and provide a generic criterion to describe a local community with two properties. We further propose a stochastic optimization algorithm to rapidly detect a local community, which allows for uncovering the directional modular characteristics in directed networks. Numerical results show that the proposed method can resolve detailed local communities with directional information and provide more structural characteristics of directed networks than previous methods.

  16. Throughput-Lifetime Tradeoffs in Multihop Wireless Networks under an SINR-based

    E-Print Network [OSTI]

    Rosenberg, Catherine P.

    1 Throughput-Lifetime Tradeoffs in Multihop Wireless Networks under an SINR-based Interference crucial design objectives for a number of multihop wireless network applica- tions. As these two this tradeoff between the network throughput and lifetime, for the case of fixed wireless networks where link

  17. Lighting Fibers in a Dark Network F. B. Shepherd and A. Vetta

    E-Print Network [OSTI]

    Vetta, Adrian

    ­fiber network, transparent optical network, linear programming, randomised rounding. I. INTRODUCTION of network design in transparent, or clear channel, optical networks associated with wavelength division capacity; we call this the cost of transparency. Experimental research shows that this cost is small

  18. Performance of wireless sensor networks under random node failures

    SciTech Connect (OSTI)

    Bradonjic, Milan [Los Alamos National Laboratory; Hagberg, Aric [Los Alamos National Laboratory; Feng, Pan [Los Alamos National Laboratory

    2011-01-28

    Networks are essential to the function of a modern society and the consequence of damages to a network can be large. Assessing network performance of a damaged network is an important step in network recovery and network design. Connectivity, distance between nodes, and alternative routes are some of the key indicators to network performance. In this paper, random geometric graph (RGG) is used with two types of node failure, uniform failure and localized failure. Since the network performance are multi-facet and assessment can be time constrained, we introduce four measures, which can be computed in polynomial time, to estimate performance of damaged RGG. Simulation experiments are conducted to investigate the deterioration of networks through a period of time. With the empirical results, the performance measures are analyzed and compared to provide understanding of different failure scenarios in a RGG.

  19. Design space exploration of photonic interconnects

    E-Print Network [OSTI]

    Sun, Chen, S.M. Massachusetts Institute of Technology

    2011-01-01

    As processors scale deep into the multi-core and many-core regimes, bandwidth and energy-efficiency of the on-die interconnect network have become paramount design issues. Recognizing potential limits of electrical ...

  20. WDS-Based Layer 2 Routing for Wireless Mesh Networks [Extended Abstract

    E-Print Network [OSTI]

    Chuah, Chen-Nee

    - struct flow-based MAC tables at each wireless router. For an incoming packet, the router will matchWDS-Based Layer 2 Routing for Wireless Mesh Networks [Extended Abstract] Dhruv Gupta, Jason Le-communication Networks]: Network Architecture and Design--wireless communication General Terms design

  1. Neural Networks Early Neural Network Modeling

    E-Print Network [OSTI]

    Yuste, Rafael

    Appendix E Neural Networks Early Neural Network Modeling Neurons Are Computational Devices A Neuron? This is the central question moti- vating the study of neural networks. In this appendix we provide a brief historical review of the field, intro- duce some key concepts, and discuss two influential models of neural networks

  2. Integrated Design of Chemical Processes and Utility Systems 

    E-Print Network [OSTI]

    Linnhoff, B.

    1985-01-01

    The pinch concept for integrated heat recovery networks has recently become established in chemical process design. This paper presents an overview of the concept and shows how it has now been extended to total process design (reactors, separators...

  3. Electrical Engineering and Computer Cross-Layer Design

    E-Print Network [OSTI]

    Electrical Engineering and Computer Science Cross-Layer Design and Analysis of Wireless Networks Wayne Stark Achilleas Anastasopoulos, Shihyu Chang, Hua Wang University of Michigan #12;Electrical Layer Design #12;Electrical Engineering and Computer Science Layered Approach Presentation Layer Session

  4. Harmonic Initial-Boundary Evolution in General Relativity

    E-Print Network [OSTI]

    Maria C. Babiuc; Bela Szilagyi; Jeffrey Winicour

    2006-03-14

    Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional numerical code which we demonstrate to provide stable, convergent Cauchy evolution in gauge wave and shifted gauge wave testbeds. Code performance is compared for Dirichlet, Neumann and Sommerfeld boundary conditions and for boundary conditions which explicitly incorporate constraint preservation. The results are used to assess strategies for obtaining physically realistic boundary data by means of Cauchy-characteristic matching.

  5. Integrity of the reactor coolant boundary of the European pressurized water reactor (EPR)

    SciTech Connect (OSTI)

    Goetsch, D.; Bieniussa, K.; Schulz, H.; Jalouneix, J.

    1997-04-01

    This paper is an abstract of the work performed in the frame of the development of the IPSN/GRS approach in view of the EPR conceptual safety features. EPR is a pressurized water reactor which will be based on the experience gained by utilities and designers in France and in Germany. The reactor coolant boundary of a PWR includes the reactor pressure vessel (RPV), those parts of the steam generators (SGs) which contain primary coolant, the pressurizer (PSR), the reactor coolant pumps (RCPs), the main coolant lines (MCLs) with their branches as well as the other connecting pipes and all branching pipes including the second isolation valves. The present work covering the integrity of the reactor coolant boundary is mainly restricted to the integrity of the main coolant lines (MCLs) and reflects the design requirements for the main components of the reactor coolant boundary. In the following the conceptual aspects, i.e. design, manufacture, construction and operation, will be assessed. A main aspect is the definition of break postulates regarding overall safety implications.

  6. Grain boundary characterization in an X750 alloy

    SciTech Connect (OSTI)

    Kevin Fisher; Sebastien Teysseyre; Emmanuelle Marquis

    2012-11-01

    Grain boundary chemistry in an X750 Ni alloy was analyzed by atom probe tomography in an effort to clarify the possible roles of elemental segregation and carbide presence on the stress corrosion cracking behavior of Ni alloys. Two types of cracks are observed: straight cracks along twin boundaries and wavy cracks at general boundaries. It was found that carbides (M23C6 and TiC) are present at both twin and general boundaries, with comparable B and P segregation for all types of grain boundaries. Twin boundaries intercept ?’ precipitates while the general boundaries wave around the ?’ and carbide precipitates. Near a crack tip, oxidation takes place on the periphery of carbide precipitate.

  7. Mobile Zigbee Sensor Networks

    E-Print Network [OSTI]

    Anantdeep, Er; Kaur, Er Balpreet

    2010-01-01

    OPNET Modeler accelerates network R&D and improves product quality through high-fidelity modeling and scalable simulation. It provides a virtual environment for designing protocols and devices, and for testing and demonstrating designs in realistic scenarios prior to production. OPNET Modeler supports 802.15.4 standard and has been used to make a model of PAN. Iterations have been performed by changing the Power of the transmitter and the throughput will has been analyzed to arrive at optimal values.An energy-efficient wireless home network based on IEEE 802.15.4, a novel architecture has been proposed. In this architecture, all nodes are classified into stationary nodes and mobile nodes according to the functionality of each node. Mobile nodes are usually battery-powered, and therefore need low-power operation. In order to improve power consumption of mobile nodes, effective handover sequence based on MAC broadcast and transmission power control based on LQ (link quality) are employed. Experimental resul...

  8. Microfluidics: The no-slip boundary condition

    E-Print Network [OSTI]

    Eric Lauga; Michael P. Brenner; Howard A. Stone

    2005-09-28

    The no-slip boundary condition at a solid-liquid interface is at the center of our understanding of fluid mechanics. However, this condition is an assumption that cannot be derived from first principles and could, in theory, be violated. We present a review of recent experimental, numerical and theoretical investigations on the subject. The physical picture that emerges is that of a complex behavior at a liquid/solid interface, involving an interplay of many physico-chemical parameters, including wetting, shear rate, pressure, surface charge, surface roughness, impurities and dissolved gas.

  9. The Geospatial Characteristics of a Social Movement Communication Network

    E-Print Network [OSTI]

    Conover, Michael D; Ferrara, Emilio; McKelvey, Karissa; Menczer, Filippo; Flammini, Alessandro

    2013-01-01

    Social movements rely in large measure on networked communication technologies to organize and disseminate information relating to the movements' objectives. In this work we seek to understand how the goals and needs of a protest movement are reflected in the geographic patterns of its communication network, and how these patterns differ from those of stable political communication. To this end, we examine an online communication network reconstructed from over 600,000 tweets from a thirty-six week period covering the birth and maturation of the American anticapitalist movement, Occupy Wall Street. We find that, compared to a network of stable domestic political communication, the Occupy Wall Street network exhibits higher levels of locality and a hub and spoke structure, in which the majority of non-local attention is allocated to high-profile locations such as New York, California, and Washington D.C. Moreover, we observe that information flows across state boundaries are more likely to contain framing lang...

  10. Building and measuring a high performance network architecture

    SciTech Connect (OSTI)

    Kramer, William T.C.; Toole, Timothy; Fisher, Chuck; Dugan, Jon; Wheeler, David; Wing, William R; Nickless, William; Goddard, Gregory; Corbato, Steven; Love, E. Paul; Daspit, Paul; Edwards, Hal; Mercer, Linden; Koester, David; Decina, Basil; Dart, Eli; Paul Reisinger, Paul; Kurihara, Riki; Zekauskas, Matthew J; Plesset, Eric; Wulf, Julie; Luce, Douglas; Rogers, James; Duncan, Rex; Mauth, Jeffery

    2001-04-20

    Once a year, the SC conferences present a unique opportunity to create and build one of the most complex and highest performance networks in the world. At SC2000, large-scale and complex local and wide area networking connections were demonstrated, including large-scale distributed applications running on different architectures. This project was designed to use the unique opportunity presented at SC2000 to create a testbed network environment and then use that network to demonstrate and evaluate high performance computational and communication applications. This testbed was designed to incorporate many interoperable systems and services and was designed for measurement from the very beginning. The end results were key insights into how to use novel, high performance networking technologies and to accumulate measurements that will give insights into the networks of the future.

  11. Poster Abstract: Wireless Sensor Networks for Structural Health Sukun Kim, Shamim Pakzad, David Culler, James Demmel

    E-Print Network [OSTI]

    California at Berkeley, University of

    Poster Abstract: Wireless Sensor Networks for Structural Health Monitoring Sukun Kim, Shamim Pakzad Experimentation, Reliability, Design Keywords Wireless Sensor Networks, Structural Health Monitoring, Deployment, Large-Scale 1 Introduction Structural Health Monitoring (SHM) is estimating the state of structural

  12. Methods and Analysis for Recovery Logistics Networks with Uncertainty and Channel Selection Considerations 

    E-Print Network [OSTI]

    Hwang, Sung Ook

    2014-12-12

    In this dissertation, we develop models and methodologies for effective design and efficient operation of product recovery logistics networks. Recovery networks, employed for recycle-reuse-refurbish-remanufacture purposes, constitute an ever...

  13. Towards a deployable framework for delegation of authority in network applications

    E-Print Network [OSTI]

    Stockwell, Will (Will C.)

    2006-01-01

    The Delegation Framework is a collection of programs, network protocols and library interfaces that provide fine-grained delegation of authority to network systems. The design and implementation of the Delegation Framework ...

  14. An Expressive Auction Design for Online Display Advertising Sebastien Lahaie

    E-Print Network [OSTI]

    Chen, Yiling

    An Expressive Auction Design for Online Display Advertising S´ebastien Lahaie Yahoo! Research New to target within an advertising network. The design al- lows the network to differentiate impressions according to relevant attributes (e.g., geographic location of the user, topic of the webpage). Advertisers

  15. DELTAE. Design Environment for Low-Amplitude Thermoacoustic Engines

    SciTech Connect (OSTI)

    Ward, W.C.

    1993-10-10

    In thermoacoustic engines and refrigerators, and in many simple acoustic systems, a one dimensional wave equation determines the spatial dependence of the acoustic pressure and velocity. DELTAE numerically integrates such wave equations in the acoustic approximation, in gases or liquids, in user-defined geometries. Boundary conditions can include conventional acoustic boundary conditions of geometry and impedance, as well as temperature and thermal power in thermoacoustic systems. DELTAE can be used easily for apparatus ranging from simple duct networks and resonators to thermoacoustic engines refrigerators and combinations thereof. It can predict how a given apparatus will perform, or can allow the user to design an apparatus to achieve desired performance. DELTAE views systems as a series of segments; twenty segment types are supported. The purely acoustic segments include ducts and cones, and lumped impedances including compliances, series impedances, and endcaps. Electroacoustics tranducer segments can be defined using either frequency-independent coefficients or the conventional parameters of loudspeaker-style drivers: mass, spring constant, magnetic field strength, etc. Tranducers can be current driven, voltage driven, or connected to an electrical load impedance. Thermoacoustic segment geometries include parallel plates, circular and rectangular pores, and pin arrays. Side branches can be defined with fixed impedances, frequency-dependent radiation impedances, or as an auxiliary series of segments of any types. The user can select working fluids from among air, helium, neon, argon, hydrogen, deuterium, carbon dioxide, nitrogen, helium-argon mixtures, helium-xenon mixtures, liquid sodium, and eutectic sodium-potassium. Additional fluids and solids can be defined by the user.

  16. DELTAE. Design Environment for Low-Amplitude Thermoacoustic Engines

    SciTech Connect (OSTI)

    Ward, W.C.; Swift, G.W.

    1993-10-01

    In thermoacoustic engines and refrigerators, and in many simple acoustic systems, a one dimensional wave equation determines the spatial dependence of the acoustic pressure and velocity. DELTAE numerically integrates such wave equations in the acoustic approximation, in gases or liquids, in user-defined geometries. Boundary conditions can include conventional acoustic boundary conditions of geometry and impedance, as well as temperature and thermal power in thermoacoustic systems. DELTAE can be used easily for apparatus ranging from simple duct networks and resonators to thermoacoustic engines refrigerators and combinations thereof. It can predict how a given apparatus will perform, or can allow the user to design an apparatus to achieve desired performance. DELTAE views systems as a series of segments; twenty segment types are supported. The purely acoustic segments include ducts and cones, and lumped impedances including compliances, series impedances, and endcaps. Electroacoustics tranducer segments can be defined using either frequency-independent coefficients or the conventional parameters of loudspeaker-style drivers: mass, spring constant, magnetic field strength, etc. Tranducers can be current driven, voltage driven, or connected to an electrical load impedance. Thermoacoustic segment geometries include parallel plates, circular and rectangular pores, and pin arrays. Side branches can be defined with fixed impedances, frequency-dependent radiation impedances, or as an auxiliary series of segments of any types. The user can select working fluids from among air, helium, neon, argon, hydrogen, deuterium, carbon dioxide, nitrogen, helium-argon mixtures, helium-xenon mixtures, liquid sodium, and eutectic sodium-potassium. Additional fluids and solids can be defined by the user.

  17. DELTAE+. Design Environment for Low-Amplitude Thermoacoustic Engines

    SciTech Connect (OSTI)

    Ward, W.C; Swift, G.W.

    1993-10-01

    In thermoacoustic engines and refrigerators, and in many simple acoustic systems, a one dimensional wave equation determines the spatial dependence of the acoustic pressure and velocity. DELTAE numerically integrates such wave equations in the acoustic approximation, in gases or liquids, in user-defined geometries. Boundary conditions can include conventional acoustic boundary conditions of geometry and impedance, as well as temperature and thermal power in thermoacoustic systems. DELTAE can be used easily for apparatus ranging from simple duct networks and resonators to thermoacoustic engines refrigerators and combinations thereof. It can predict how a given apparatus will perform, or can allow the user to design an apparatus to achieve desired performance. DELTAE views systems as a series of segments; twenty segment types are supported. The purely acoustic segments include ducts and cones, and lumped impedances including compliances, series impedances, and endcaps. Electroacoustics tranducer segments can be defined using either frequency-independent coefficients or the conventional parameters of loudspeaker-style drivers: mass, spring constant, magnetic field strength, etc. Tranducers can be current driven, voltage driven, or connected to an electrical load impedance. Thermoacoustic segment geometries include parallel plates, circular and rectangular pores, and pin arrays. Side branches can be defined with fixed impedances, frequency-dependent radiation impedances, or as an auxiliary series of segments of any types. The user can select working fluids from among air, helium, neon, argon, hydrogen, deuterium, carbon dioxide, nitrogen, helium-argon mixtures, helium-xenon mixtures, liquid sodium, and eutectic sodium-potassium. Additional fluids and solids can be defined by the user.

  18. Network Monitoring in Multicast Networks Using Network Coding

    E-Print Network [OSTI]

    Ho, Tracey

    , and give some experimental results for one and two link failures in randomly generated networks. We also inference of possible locations of link failures or losses in a network. For distributed randomized network coding, we bound the probability of being able to distinguish among a given set of failure events

  19. Energy Efficient Design in MIMO Multicell Systems with Time Average QoS Constraints

    E-Print Network [OSTI]

    Boyer, Edmond

    Abstract--In this work, we address the issue of energy efficient design in a MIMO multi-cell network. Energy efficient design in cellular networks addresses the concerns of ICT related carbon emissions [1], [2] and leads to a reduction in the costs of running the network due to the reduction in the energy

  20. The Network

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopment TopMetathesisSediments and RelatedProject HomeNetwork

  1. Introduction to Network Analysis 1 Introduction to Network Analysis

    E-Print Network [OSTI]

    Safro, Ilya

    Networks from networksandservers.blogspot.com #12;Introduction to Network Analysis 7 Natural gas major

  2. A study on boundary separation in an idealized ocean model

    E-Print Network [OSTI]

    Düben, Peter D

    2015-01-01

    In numerical ocean models coast lines change the direction from one grid cell to its neighbor and the value for viscosity is set to be as small as possible. Therefore, model simulations are not converged with resolution and boundary separation points differ in essential properties from flow separation in continuous flow fields. In this paper, we investigate the quality of the representation of boundary separation points in global ocean models. To this end, we apply well established criteria for boundary separation within an idealized ocean model setup. We investigate an eddy-resolving as well as a steady test case with idealized and unstructured coast lines in a shallow water model that is based on a finite element discretization method. The results show that well established criteria for separation fail to detect boundary separation points due to an insufficient representation of ocean flows along free-slip boundaries. Along no-slip boundaries, most separation criteria provide adequate results. However, a ve...

  3. First order gravity: Actions, topological terms and boundaries

    E-Print Network [OSTI]

    Corichi, Alejandro; Vukasinac, Tatjana

    2013-01-01

    We consider first order gravity in four dimensions. This means that the fundamental variables are a tetrad $e$ and a SO(3,1) connection $\\omega$. We study the most general action principle compatible with diffeomorphism invariance. This implies, in particular, considering besides the standard Einstein-Hilbert term, other terms that either do not change the equations of motion, or are topological in nature. Having a well defined action principle also implies adding additional boundary terms, whose detailed form may depend on the particular boundary conditions at hand. We consider spacetimes that include a boundary at infinity, satisfying asymptotically flat boundary conditions and/or an internal boundary satisfying isolated horizons boundary conditions. For our analysis we employ the covariant Hamiltonian formalism where the phase space $\\Gamma$ is given by solutions to the equation of motion. For each of the possible terms contributing to the action we study the well posedness of the action, its finiteness, t...

  4. Hybrid function projective synchronization in complex dynamical networks

    SciTech Connect (OSTI)

    Wei, Qiang; Wang, Xing-yuan, E-mail: wangxy@dlut.edu.cn; Hu, Xiao-peng [Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024 (China)] [Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024 (China)

    2014-02-15

    This paper investigates hybrid function projective synchronization in complex dynamical networks. When the complex dynamical networks could be synchronized up to an equilibrium or periodic orbit, a hybrid feedback controller is designed to realize the different component of vector of node could be synchronized up to different desired scaling function in complex dynamical networks with time delay. Hybrid function projective synchronization (HFPS) in complex dynamical networks with constant delay and HFPS in complex dynamical networks with time-varying coupling delay are researched, respectively. Finally, the numerical simulations show the effectiveness of theoretical analysis.

  5. NO. RIY. NO. TRANSMITTER DESIGN ANALYSIS ATM 897

    E-Print Network [OSTI]

    Rathbun, Julie A.

    NO. RIY. NO. TRANSMITTER DESIGN ANALYSIS ATM 897 PAGI 1 84 ( .e-,~·p·oe atam8 Dlvl8lon DATl! 7 - 6 TRANSMITTER DESIGN ANALYSIS PAGI 2 DATE 7-6-70 TABLE OF CONTENTS TRANSMITTER DESIGN ANALYSIS 1. INTRODUCTION AMPLIFIER 7. 4 Q4 OUTPUT NETWORK RE-CALCULATION 011 #12;TRANSMITTER DESIGN ANALYSIS ··-~·pace ltam8 Dlvlelon

  6. Effective Hydrodynamic Boundary Conditions for Corrugated Surfaces

    E-Print Network [OSTI]

    Mongruel, Anne; Asmolov, Evgeny S; Vinogradova, Olga I

    2012-01-01

    We report measurements of the hydrodynamic drag force acting on a smooth sphere falling down under gravity to a plane decorated with microscopic periodic grooves. Both surfaces are lyophilic, so that a liquid (silicone oil) invades the surface texture being in the Wenzel state. A significant decrease in the hydrodynamic resistance force as compared with that predicted for two smooth surfaces is observed. To quantify the effect of roughness we use the effective no-slip boundary condition, which is applied at the imaginary smooth homogeneous isotropic surface located at an intermediate position between top and bottom of grooves. Such an effective condition fully characterizes the force reduction measured with the real surface, and the location of this effective plane is related to geometric parameters of the texture by a simple analytical formula.

  7. Network coding for robust wireless networks

    E-Print Network [OSTI]

    Kim, MinJi, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    Wireless networks and communications promise to allow improved access to services and information, ubiquitous connectivity, and mobility. However, current wireless networks are not well-equipped to meet the high bandwidth ...

  8. Efficient network camouflaging in wireless networks 

    E-Print Network [OSTI]

    Jiang, Shu

    2006-04-12

    (e.g. broadcast, node mobility) that traditional wired networks do not possess. This necessitates developing new techniques that take account of properties of wireless networks and are able to achieve a good balance between performance and security...

  9. Evaluation of wall boundary condition parameters for gas-solids...

    Office of Scientific and Technical Information (OSTI)

    predictions of various gas-solids fluidized beds. Several models for the granular flow wall boundary condition are available in the open literature for numerical modeling of...

  10. A major lithospheric boundary in eastern California defined by...

    Open Energy Info (EERE)

    ratios of Miocene-Recent basalts in eastern California, when screened for crustal contamination, vary dramatically and indicate the presence of a major lithospheric boundary that...

  11. [Perovskite and Fluorite Grain Boundary Properties]. Final Project Report

    SciTech Connect (OSTI)

    Browning, N. D.

    2004-02-24

    One of the main areas of research in the last two years in this program has been the properties of grain boundaries in perovskite and fluorite structure materials.

  12. Short wavelength topography on the inner-core boundary

    E-Print Network [OSTI]

    Cao, A.; Masson, Y.; Romanowicz, B.

    2006-01-01

    Short wavelength topography on the inner-core boundary Aimin94720 Constraining the topography of the inner-core boundaryindicates the presence of topography at the inner- core

  13. OPTIMAL REGULARITY AND THE FREE BOUNDARY IN THE ...

    E-Print Network [OSTI]

    2013-06-25

    nomenon of osmosis and osmotic pressure in biochemistry), and the problems on the temperature control on the boundary in thermics. We refer to the book of.

  14. An outflow boundary condition and algorithm for incompressible two ...

    E-Print Network [OSTI]

    S. Dong

    2014-03-05

    Feb 22, 2014 ... conditions for the phase field function on each boundary, which ...... These velocity histories indicate that the oil–water two-phase flow has ...

  15. Mineral Deformation at Earth's Core-Mantle Boundary

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

    At the core-mantle boundary (CMB), 2900 km deep, seismologists have discovered that seismic waves travel faster in certain directions. This seismic anisotropy appears to be...

  16. Friction of Steel Sliding Under Boundary Lubrication Regime in...

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

    how to increase engine efficiency by reducing parasitic boundary regime friction losses and enable operation with lower viscosity oils while maintaining engine durability....

  17. Sandia Energy - Elucidating the Role of Twin Boundaries in Deformation...

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

    Impact Coupled experiment and modeling reveal the dramatic and complex impact of high-density twin boundaries on microstructure evolution and deformation mechanisms Research...

  18. Characterization of the Weatherization Assistance Program network

    SciTech Connect (OSTI)

    Mihlmester, P.E.; Koehler, W.C. Jr.; Beyer, M.A. . Applied Management Sciences Div.); Brown, M.A. ); Beschen, D.A. Jr. . Office of Weatherization Assistance Programs)

    1992-02-01

    The Characterization of the Weatherization Assistance Program (WAP) Network was designed to describe the national network of State and local agencies that provide WAP services to qualifying low-income households. The objective of this study was to profile the current WAP network. To achieve the objective, two national surveys were conducted: one survey collected data from 49 State WAP agencies (including the coterminous 48 States and the District of Columbia), and the second survey collected data from 920 (or 81 percent) of the local WAP agencies.

  19. Preliminary PBFA II design

    SciTech Connect (OSTI)

    Johnson, D. L.; VanDevender, J. P.; Martin, T. H.

    1980-01-01

    The upgrade of Sandia National Laboratories particle beam fusion accelerator, PBFA I, to PBFA II presents several interesting and challenging pulsed power design problems. PBFA II requires increasing the PBFA I output parameters from 2 MV, 30 TW, 1 MJ to 4 MV, 100 TW, 3.5 MJ with the constraint of using much of the same PBFA I hardware. The increased PBFA II output will be obtained by doubling the number of modules (from 36 to 72), increasing the primary energy storage (from 4 MJ to 15 MJ), lowering the pulse forming line (PFL) output impedance, and adding a voltage doubling network.

  20. Engitectural Design 

    E-Print Network [OSTI]

    Gagliardi, D. R.

    1996-01-01

    to the mechanical systems of building, and in a hot and humid climate the issues are magnified. Therefore, this paper will discuss the concepts and merits of a new design process called: Engitectural Design. Engitectural Design is the concept of blending the many...

  1. Grain boundary depletion and migration during selective oxidation of Cr in a Ni-5Cr binary alloy exposed to high-temperature hydrogenated water

    SciTech Connect (OSTI)

    Schreiber, Daniel K.; Olszta, Matthew J.; Bruemmer, Stephen M.

    2014-10-01

    High-resolution microscopy of a high-purity Ni-5Cr alloy exposed to 360°C hydrogenated water reveals intergranular selective oxidation of Cr accompanied by local Cr depletion and diffusion-induced grain boundary migration (DIGM). The corrosion-product oxide consists of a porous, interconnected network of Cr2O3 platelets with no further O ingress into the metal ahead. Extensive grain boundary depletion of Cr (to <0.05at.%) is observed typically 20–100 nm wide as a result of DIGM and reaching depths of many micrometers beyond the oxidation front.

  2. Interconnection networks

    DOE Patents [OSTI]

    Faber, V.; Moore, J.W.

    1988-06-20

    A network of interconnected processors is formed from a vertex symmetric graph selected from graphs GAMMA/sub d/(k) with degree d, diameter k, and (d + 1)exclamation/ (d /minus/ k + 1)exclamation processors for each d greater than or equal to k and GAMMA/sub d/(k, /minus/1) with degree d /minus/ 1, diameter k + 1, and (d + 1)exclamation/(d /minus/ k + 1)exclamation processors for each d greater than or equal to k greater than or equal to 4. Each processor has an address formed by one of the permutations from a predetermined sequence of letters chosen a selected number of letters at a time, and an extended address formed by appending to the address the remaining ones of the predetermined sequence of letters. A plurality of transmission channels is provided from each of the processors, where each processor has one less channel than the selected number of letters forming the sequence. Where a network GAMMA/sub d/(k, /minus/1) is provided, no processor has a channel connected to form an edge in a direction delta/sub 1/. Each of the channels has an identification number selected from the sequence of letters and connected from a first processor having a first extended address to a second processor having a second address formed from a second extended address defined by moving to the front of the first extended address the letter found in the position within the first extended address defined by the channel identification number. The second address is then formed by selecting the first elements of the second extended address corresponding to the selected number used to form the address permutations. 9 figs.

  3. Design and optimization of global distribution supply chain at McCain Foods

    E-Print Network [OSTI]

    Gentiletti, Andrea

    2012-01-01

    Network design has been successfully used by numerous organizations to achieve supply chain excellence through cost effectiveness and superior utilization of resources. This thesis addresses how network optimization methods ...

  4. Stellarator Coil Design and Plasma Sensitivity

    SciTech Connect (OSTI)

    Long-Poe Ku and Allen H. Boozer

    2010-11-03

    The rich information contained in the plasma response to external magnetic perturbations can be used to help design stellarator coils more effectively. We demonstrate the feasibility by first devel- oping a simple, direct method to study perturbations in stellarators that do not break stellarator symmetry and periodicity. The method applies a small perturbation to the plasma boundary and evaluates the resulting perturbed free-boundary equilibrium to build up a sensitivity matrix for the important physics attributes of the underlying configuration. Using this sensitivity information, design methods for better stellarator coils are then developed. The procedure and a proof-of-principle application are given that (1) determine the spatial distributions of external normal magnetic field at the location of the unperturbed plasma boundary to which the plasma properties are most sen- sitive, (2) determine the distributions of external normal magnetic field that can be produced most efficiently by distant coils, (3) choose the ratios of the magnitudes of the the efficiently produced magnetic distributions so the sensitive plasma properties can be controlled. Using these methods, sets of modular coils are found for the National Compact Stellarator Experiment (NCSX) that are either smoother or can be located much farther from the plasma boundary than those of the present design.

  5. Models of Computation for Networks on Chip Axel Jantsch

    E-Print Network [OSTI]

    Jantsch, Axel

    that defines a set of plat- form services with performance and power characteristics. By making the implementation of these services entirely ir- relevant for system design, an effective separation of system design from component design can be achieved. We discuss the principles to formulate network

  6. Abstract--In this paper, we develop a joint Network Coding (NC)-channel coding error-resilient sensor-network approach

    E-Print Network [OSTI]

    Radha, Hayder

    D represents a major development of an underlying framework for designing Code-on-Network-Graph (CNG). CNG (and, and consequently translates check equations (used in linear algebraic LDPC codes) into in-network processing. INPoD/CNG of INPoD, basic CNG employs standard LDPC codes while assuming the underlying sensor network is capable

  7. Advanced mobile networking, sensing, and controls.

    SciTech Connect (OSTI)

    Feddema, John Todd; Kilman, Dominique Marie; Byrne, Raymond Harry; Young, Joseph G.; Lewis, Christopher L.; Van Leeuwen, Brian P.; Robinett, Rush D. III; Harrington, John J.

    2005-03-01

    This report describes an integrated approach for designing communication, sensing, and control systems for mobile distributed systems. Graph theoretic methods are used to analyze the input/output reachability and structural controllability and observability of a decentralized system. Embedded in each network node, this analysis will automatically reconfigure an ad hoc communication network for the sensing and control task at hand. The graph analysis can also be used to create the optimal communication flow control based upon the spatial distribution of the network nodes. Edge coloring algorithms tell us that the minimum number of time slots in a planar network is equal to either the maximum number of adjacent nodes (or degree) of the undirected graph plus some small number. Therefore, the more spread out that the nodes are, the fewer number of time slots are needed for communication, and the smaller the latency between nodes. In a coupled system, this results in a more responsive sensor network and control system. Network protocols are developed to propagate this information, and distributed algorithms are developed to automatically adjust the number of time slots available for communication. These protocols and algorithms must be extremely efficient and only updated as network nodes move. In addition, queuing theory is used to analyze the delay characteristics of Carrier Sense Multiple Access (CSMA) networks. This report documents the analysis, simulation, and implementation of these algorithms performed under this Laboratory Directed Research and Development (LDRD) effort.

  8. Detecting and Tracking Level Sets of Scalar Fields Using a Robotic Sensor Network

    E-Print Network [OSTI]

    Dantu, Karthik; Sukhatme, Gaurav

    2007-01-01

    are with the Robotic Embedded Systems Laboratory, Computerconference on Embedded networked sensor systems, pages 214–systems: Design and experimental evaluation. Trans. on Embedded

  9. Abstract--In this paper two approaches for reducing communication traffic in a control network, namely, Model-

    E-Print Network [OSTI]

    Antsaklis, Panos

    considered in this paper. I. INTRODUCTION N Networked Control Systems (NCS) a digital communication network in control design in order to account for limited feedback information in the analysis and design of NCS, namely, Model- Based Networked Control Systems (MB-NCS) and event- triggered control, are unified under

  10. Financial Networks Anna Nagurney

    E-Print Network [OSTI]

    Nagurney, Anna

    Freight Network World Oil Routes Natural Gas Flows Network Systems Internet Traffic Anna Nagurney in decision-making; constraints on resources: human, financial, natural, time, etc.; global reach of many of Networks Today large-scale nature and complexity of network topology; congestion, which leads

  11. T-duality trivializes bulk-boundary correspondence

    E-Print Network [OSTI]

    Varghese Mathai; Guo Chuan Thiang

    2015-07-26

    Recently we introduced T-duality in the study of topological insulators. In this paper, we study the bulk-boundary correspondence for three phenomena in condensed matter physics, namely, the quantum Hall effect, the Chern insulator, and time reversal invariant topological insulators. In all of these cases, we show that T-duality trivializes the bulk-boundary correspondence.

  12. Boundary lubrication under water Wuge H. Briscoe1

    E-Print Network [OSTI]

    Klein, Jacob

    LETTERS Boundary lubrication under water Wuge H. Briscoe1 , Simon Titmuss1 , Fredrik Tiberg1 {, Robert K. Thomas1 , Duncan J. McGillivray1 { & Jacob Klein1,2 Boundary lubrication, in which the rubbing. This process, wide- spread in engineering applications, is also predicted to occur in biological lubrication

  13. Modal Analysis of Homogeneous Optical Waveguides by Boundary Integral Method

    E-Print Network [OSTI]

    Modal Analysis of Homogeneous Optical Waveguides by Boundary Integral Method Lei Wang J. Allen Cox of the waveguide. Two dierent systems of boundary integral equations are derived for the numerical solutions of the discrete propagation constants; one of them is in the form of Fredholm integral equations of the second

  14. ANNIVERSARY REVIEW Grain boundary energy anisotropy: a review

    E-Print Network [OSTI]

    Rohrer, Gregory S.

    energy (B) gained when the two surfaces are brought together and new bonds are formed. The grain boundary with the stiffness of the material. The excess energy of the grANNIVERSARY REVIEW Grain boundary energy anisotropy: a review Gregory S. Rohrer Received: 29 April

  15. Stability of High-Speed, Three-Dimensional Boundary Layers 

    E-Print Network [OSTI]

    Craig, Stuart A

    2015-04-02

    Boundary-layer experiments are performed in the low-disturbance, Mach 6 Quiet Tunnel (M6QT) at Texas A&M University. The experiments are focused specifically on investigating the physics of two three-dimensional phenomena in hypersonic boundary...

  16. LARGE EDDY SIMULATION OF TURBULENT BOUNDARY LAYERS OVER ROUGH BEDS

    E-Print Network [OSTI]

    Pawlak, Geno

    that determines the response of the boundary layer is not clear. One method to characterize the irregular nature with different spectral slopes using 2D 10 % loading square waves as basis functions. These square waves can) is then used to simulate the turbulent boundary layer over the rough beds. The LES solver is first validated

  17. Aero-Optical Effects of Supersonic Boundary Layers Stanislav Gordeyev

    E-Print Network [OSTI]

    Gordeyev, Stanislav

    Aero-Optical Effects of Supersonic Boundary Layers Stanislav Gordeyev and Eric Jumper University, Colorado 80840 DOI: 10.2514/1.J051266 Aero-optical measurements of a zero-pressure-gradient, supersonic to describe aero-optical effects of both the subsonic and the supersonic boundary layers. Finally, this new

  18. Detecting Subject Boundaries Within Text: A Language Independent Statistical Approach

    E-Print Network [OSTI]

    Edinburgh, University of

    Detecting Subject Boundaries Within Text: A Language Independent Statistical Approach Korin describe here an algorithm for detect­ ing subject boundaries within text based on a statistical lexical assumptions is that a change in subject is accompanied by a change in vo­ cabulary. Using this assumption

  19. SUPERSONIC SHEAR INSTABILITIES IN ASTROPHYSICAL BOUNDARY LAYERS

    SciTech Connect (OSTI)

    Belyaev, Mikhail A.; Rafikov, Roman R., E-mail: rrr@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Ivy Lane, Princeton, NJ 08540 (United States)

    2012-06-20

    Disk accretion onto weakly magnetized astrophysical objects often proceeds via a boundary layer (BL) that forms near the object's surface, in which the rotation speed of the accreted gas changes rapidly. Here, we study the initial stages of formation for such a BL around a white dwarf or a young star by examining the hydrodynamical shear instabilities that may initiate mixing and momentum transport between the two fluids of different densities moving supersonically with respect to each other. We find that an initially laminar BL is unstable to two different kinds of instabilities. One is an instability of a supersonic vortex sheet (implying a discontinuous initial profile of the angular speed of the gas) in the presence of gravity, which we find to have a growth rate of order (but less than) the orbital frequency. The other is a sonic instability of a finite width, supersonic shear layer, which is similar to the Papaloizou-Pringle instability. It has a growth rate proportional to the shear inside the transition layer, which is of order the orbital frequency times the ratio of stellar radius to the BL thickness. For a BL that is thin compared to the radius of the star, the shear rate is much larger than the orbital frequency. Thus, we conclude that sonic instabilities play a dominant role in the initial stages of nonmagnetic BL formation and give rise to very fast mixing between disk gas and stellar fluid in the supersonic regime.

  20. Irradiation Assisted Grain Boundary Segregation in Steels

    SciTech Connect (OSTI)

    Lu, Zheng; Faulkner, Roy G.

    2008-07-01

    The understanding of radiation-induced grain boundary segregation (RIS) has considerably improved over the past decade. New models have been introduced and much effort has been devoted to obtaining comprehensive information on segregation from the literature. Analytical techniques have also improved so that chemical analysis of layers 1 nm thick is almost routine. This invited paper will review the major methods used currently for RIS prediction: namely, Rate Theory, Inverse Kirkendall, and Solute Drag approaches. A summary is made of the available data on phosphorus RIS in reactor pressure vessel (RPV) steels. This will be discussed in the light of the predictions of the various models in an effort to show which models are the most reliable and easy to use for forecasting P segregation behaviour in steels. A consequence of RIS in RPV steels is a radiation induced shift in the ductile to brittle transition temperature (DBTT). It will be shown how it is possible to relate radiation-induced P segregation levels to DBTT shift. Examples of this exercise will be given for RPV steels and for ferritic steels being considered for first wall fusion applications. Cr RIS in high alloy stainless steels and associated irradiation-assisted stress corrosion cracking (IASCC) will be briefly discussed. (authors)

  1. IEEE Communications Magazine December 2005120 0163-6804/05/$20.00 2005 IEEE CROSS-LAYER DESIGN

    E-Print Network [OSTI]

    Jiang, Hai

    and profitable commercial market for 3G and beyond, network service designers and providers need to pay muchIEEE Communications Magazine · December 2005120 0163-6804/05/$20.00 © 2005 IEEE CROSS-LAYER DESIGN and transparent protocol design in different layers, a traditional network design approach that defines a stack

  2. A boundary-value problem in weighted Hölder spaces for elliptic equations which degenerate at the boundary of the domain

    SciTech Connect (OSTI)

    Bazalii, B V; Degtyarev, S P

    2013-07-31

    An elliptic boundary-value problem for second-order equations with nonnegative characteristic form is investigated in the situation when there is a weak degeneracy on the boundary of the domain. A priori estimates are obtained for solutions and the problem is proved to be solvable in some weighted Hölder spaces. Bibliography: 18 titles.

  3. The Relationship Between Grain Boundary Energy, Grain Boundary Complexion Transitions, and Grain Size in Ca-doped Yttria

    E-Print Network [OSTI]

    Rohrer, Gregory S.

    The Relationship Between Grain Boundary Energy, Grain Boundary Complexion Transitions, and Grain complexions. One idea is that complexion transitions occur to lower the average energy of the interface energy. Experiments on doped aluminas have shown that a complexion transition can change the relative

  4. Criteria for stochastic pinning control of networks of chaotic maps

    SciTech Connect (OSTI)

    Mwaffo, Violet; Porfiri, Maurizio; DeLellis, Pietro

    2014-03-15

    This paper investigates the controllability of discrete-time networks of coupled chaotic maps through stochastic pinning. In this control scheme, the network dynamics are steered towards a desired trajectory through a feedback control input that is applied stochastically to the network nodes. The network controllability is studied by analyzing the local mean square stability of the error dynamics with respect to the desired trajectory. Through the analysis of the spectral properties of salient matrices, a toolbox of conditions for controllability are obtained, in terms of the dynamics of the individual maps, algebraic properties of the network, and the probability distribution of the pinning control. We demonstrate the use of these conditions in the design of a stochastic pinning control strategy for networks of Chirikov standard maps. To elucidate the applicability of the approach, we consider different network topologies and compare five different stochastic pinning strategies through extensive numerical simulations.

  5. Southwestern Ontario Medical Education Network Southwestern Ontario Medical Education Network

    E-Print Network [OSTI]

    Lennard, William N.

    Southwestern Ontario Medical Education Network SWOMEN Southwestern Ontario Medical Education Network SWOMEN Contact: Charlotte Sikatori, Southwestern Ontario Medical Education Network (SWOMEN

  6. Energy-Efficient Surveillance System Using Wireless Sensor Networks

    E-Print Network [OSTI]

    Stankovic, John A.

    Energy-Efficient Surveillance System Using Wireless Sensor Networks Tian He, Sudha Krishnamurthy networks, is of great prac- tical importance for the military. Because of the energy constraints of sensor devices, such systems necessitate an energy-aware design to ensure the longevity of surveillance missions

  7. Architecture of the Secoqc Quantum Key Distribution network

    E-Print Network [OSTI]

    Mehrdad Dianati; Romain Alleaume

    2006-10-25

    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.

  8. Optimal Seismic Network Density for Earthquake Early Warning: A Case

    E-Print Network [OSTI]

    Allen, Richard M.

    Optimal Seismic Network Density for Earthquake Early Warning: A Case Study from California by H and the public actively use early warning information is a crucial factor in early warning system design (Aktas detection and alert-filtering algorithms; and (d) well-developed seismic networks with improved station

  9. THEORETICAL FOUNDATIONS OF MOBILE FLEXIBLE NETWORKS Merouane Debbah

    E-Print Network [OSTI]

    Boyer, Edmond

    THEORETICAL FOUNDATIONS OF MOBILE FLEXIBLE NETWORKS M´erouane Debbah Alcatel-Lucent Chair.debbah@supelec.fr ABSTRACT The general framework of Mobile Flexible Networks (MFN) is to design dense self-organizing, self on Flexible Radio Supelec, 3 rue Joliot-Curie 91192 GIF SUR YVETTE CEDEX, France Email: merouane

  10. Analytical Analysis of Data and Decision Fusion in Sensor Networks

    E-Print Network [OSTI]

    Gupta, Ajay

    accuracy and reliability of sensed readings of a network of wireless devices, while increasing the lifetime the significance of CSP might prompt hardware and software designers to optimize wireless sensor networks operations by simple averaging techniques. In practice, d is much larger than f. Therefore, total

  11. Catnap: Energy Proportional Multiple Network-on-Chip Reetuparna Das

    E-Print Network [OSTI]

    Cafarella, Michael J.

    Catnap: Energy Proportional Multiple Network-on-Chip Reetuparna Das University of Michigan reetudas a power perspective and can be leveraged to achieve energy proportionality by effective power gating-network design for an average per- formance cost of about 5%. 1. Introduction Energy proportional computing [1, 3

  12. On Transport Layer Adaptation in Heterogeneous Wireless Data Networks

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    . While defacto assumptions have been made in related work on the ideal characteris- tics- tics change within the same wireless network. We then present the design and implementation networks [1]. WTCP [2] uses techniques specifically targeted to address the challenging characteris- tics

  13. Layered Switching for Networks on Chip Zhonghai Lu

    E-Print Network [OSTI]

    Jantsch, Axel

    ; General Terms: Design, Theory, Performance Keywords: Network-on-Chip, System-on-Chip, Switching Technique a large portion of area and consume significant power. In the Æthereal WH switch [4], the flit buffersLayered Switching for Networks on Chip Zhonghai Lu zhonghai@kth.se Ming Liu mingliu@kth.se Axel

  14. Graph spectra and modal dynamics of oscillatory networks

    E-Print Network [OSTI]

    Ayazifar, Babak, 1967-

    2003-01-01

    Our research focuses on developing design-oriented analytical tools that enable us to better understand how a network comprising dynamic and static elements behaves when it is set in oscillatory motion, and how the ...

  15. Evaluation of explicit congestion control for high-speed networks 

    E-Print Network [OSTI]

    Jain, Saurabh

    2009-05-15

    Recently, there has been a significant surge of interest towards the design and development of a new global-scale communication network that can overcome the limitations of the current Internet. Among the numerous directions ...

  16. Generalized Domination in Graphs with Applications in Wireless Networks 

    E-Print Network [OSTI]

    Sung, Je Sang

    2013-12-10

    The objective of this research is to study practical generalization of domination in graphs and explore the theoretical and computational aspects of models arising in the design of wireless networks. For the construction of a virtual backbone of a...

  17. SMPL : a network architecture for collaborative distributed services

    E-Print Network [OSTI]

    Rocha, Carols A. (Carlos Andres Rocha Penagos)

    2005-01-01

    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 ...

  18. Microsoft Word - The_Advanced_Networks_and_Services_Underpinning...

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

    to, and designed to be compatible with, other research and education networks such as Internet2 in the United States and DANTEGANT in Europe. ESnet's mission is to provide an...

  19. Interference management techniques in large-scale wireless networks 

    E-Print Network [OSTI]

    Luo, Yi

    2015-06-29

    In this thesis, advanced interference management techniques are designed and evaluated for large-scale wireless networks with realistic assumptions, such as signal propagation loss, random node distribution and ...

  20. New Frontiers in Internet Network Management Ehab Al-Shaer+

    E-Print Network [OSTI]

    Ng, T. S. Eugene

    into clean-slate designs that intrinsically support man- agement rather than treating management as a bolted, such as faults, misconfiguration, performance degra- dation, etc., are due to insufficient support for network