National Library of Energy BETA

Sample records for workforce ad hoc

  1. Ad Hoc Curriculum Implementation Working Group Ad Hoc Working Group

    E-Print Network [OSTI]

    Brown, Sally

    Ad Hoc Curriculum Implementation Working Group MINUTES Ad Hoc Working Group 4 December 2002 Friedman on her visit next week. ONE CURRICULUM OR TWO? Information presented by Trudeau shows that PSE and other programs cannot be merged into a single curriculum. The Faculty Senate website states

  2. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01

    multicasting in energy-constrained wireless networks,” IEEEminimum-energy multicasting in wireless ad hoc networks,”minimum-energy multicasting in wireless ad hoc networks,” in

  3. Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks Weifa Liang, Senior Member, IEEE Abstract--A wireless ad hoc network consists of mobile nodes that are equipped with energy on energy conservation in wireless ad hoc networks have been conducted. For example, energy efficient

  4. Low-Interference Topology Control for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    wireless ad hoc networks. Many aspects of the networking will affect the energy consumption of the wireless may cause larger energy consumption. In wireless ad hoc networks, each wireless device can selectively1 Low-Interference Topology Control for Wireless Ad Hoc Networks Kousha Moaveni-Nejad, Xiang

  5. LEARNING-BASED ROUTE MANAGEMENT IN WIRELESS AD HOC NETWORKS

    E-Print Network [OSTI]

    Littman, Michael L.

    and Wade Trappe The nodes in a wireless ad hoc network must act as routers in a self-configuring network to shortest-path routing protocols for managing router congestion and noise in wireless ad hoc networks. iiLEARNING-BASED ROUTE MANAGEMENT IN WIRELESS AD HOC NETWORKS BY BRIAN RUSSELL A dissertation

  6. Enhancing Cellular Multicast Performance Using Ad Hoc Networks

    E-Print Network [OSTI]

    Kasera, Sneha Kumar

    Enhancing Cellular Multicast Performance Using Ad Hoc Networks Jun Cheol Park and Sneha Kumar heterogeneity problem in cellular multicast with the help of an additional IEEE 802.11 ad hoc network. The basic idea is to allow the cellular receivers experiencing poor channel conditions to use the ad hoc network

  7. Maximizing Battery Life Routing in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Maximizing Battery Life Routing in Wireless Ad Hoc Networks Weifa Liang Department of Computer Abstract--Most wireless ad hoc networks consist of mobile devices which operate on batteries. Power con, for an ad hoc network consisting of the same type of battery mobile nodes, two approximation algorithms

  8. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01

    organization wireless networks and wireless mobile ad-hocfor heterogeneous wireless network”, in Proc. of IEEER. Khalaf, “Ad hoc wireless networks with mobile backbones,”

  9. Distributed services for mobile ad hoc networks 

    E-Print Network [OSTI]

    Cao, Guangtong

    2005-11-01

    by equipping each node with a device like a GPS receiver, a GPS receiver?s functionality is limited due to its geographical constraints, high energy consumption and cost. Therefore, studying clock synchronization algorithms for mobile ad hoc networks has 7... Network Lifetime vs. Number of Nodes : : : : : : : : : : : : : : : : : 61 24 Standard Deviation of Remaining Energy vs. Number of Nodes : : : 63 25 The k-Mutual Exclusion System Architecture : : : : : : : : : : : : : 71 26 Operation of KRL Algorithm on a...

  10. Maximizing the throughput of large ad hoc wireless networks

    E-Print Network [OSTI]

    Hua, Yingbo; Huang, Yi; J, Garcia-Luna-Aceves J

    2006-01-01

    The transport capacity of wireless networks over fadingimprovement of ad hoc wireless networks using directionalThe capacity of wireless networks,” IEEE Trans. Inform.

  11. Master Thesis Group Key Agreement for Ad Hoc Networks

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Master Thesis Group Key Agreement for Ad Hoc Networks Lijun Liao Date: 06 July 2005 Supervisor: M their financial support. #12;Abstract Over the last 30 years the study of group key agreement has stimulated much present a Tree-based group key agreement Framework for Ad-hoc Networks (TFAN). TFAN is especially suitable

  12. Curriculum Revision REPORT OF AD HOC WORKING GROUP ON

    E-Print Network [OSTI]

    Brown, Sally

    Curriculum Revision REPORT OF AD HOC WORKING GROUP ON CURRICULUM REVISION (November 2002- March (2) Charge to Ad Hoc Working Group on Curriculum.............................. 12 (3) Materials;Curriculum Revision SUMMARY Curriculum transformation at the College of Forest Resources (CFR) is a response

  13. Transmission capacity of CDMA ad hoc networks Steven Weber

    E-Print Network [OSTI]

    de Veciana, Gustavo

    Transmission capacity of CDMA ad hoc networks Steven Weber Dept. of ECE Drexel University and tolerate co-located simultaneous transmissions. We develop analytic results on the transmission capacity of a CDMA ad hoc network. Transmission capacity is defined as the maximum permissible density

  14. Optimum Transmission Range for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Deng, Jing

    Optimum Transmission Range for Wireless Ad Hoc Networks Jing Deng Dept. of EECS Syracuse Univ-- The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied under homogeneous node distribution. By as- suming the knowledge of node location, we first proposed a transmission

  15. Brief Contributions________________________________________________________________________________ Topology Control of Ad Hoc Wireless

    E-Print Network [OSTI]

    Poon, Chung Keung

    ________________________________________________________________________________ Topology Control of Ad Hoc Wireless Networks for Energy Efficiency Maggie X. Cheng, Member, IEEE, Mihaela of each wireless node such that the resulting network is connected and the total energy consumption the theoretical analysis. Index Terms--Multihop, ad hoc, wireless networks, energy efficiency, transmission power

  16. Improving the Battery Performance of Ad-Hoc Routing Protocols

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    Improving the Battery Performance of Ad-Hoc Routing Protocols Q. Qi and C. Chakrabarti Department-- In ad-hoc networks formed by battery powered nodes, the network lifetime can be significantly enhanced by incorporateing the battery properties in the routing protocol. In this paper, we propose such a routing mechanism

  17. Topology Control Protocols to Conserve Energy in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Xu, Ya; Bien, Solomon; Mori, Yutaka; Heidemann, John; Estrin, D

    2003-01-01

    Protocols to Conserve Energy in Wireless Ad Hoc Networks YaL. Tassiulas. Energy conserving routing in wireless ad-hocAdaptive Energy Conservation Protocols for Wireless Ad Hoc

  18. The Capacityand Energy Efficiency of Wireless Ad Hoc Networks with MultipacketReception

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

    per-joule capacity of energy-limited wireless networks. IEEECapacity and Energy Efficiency of Wireless Ad Hoc Networksplexity, and energy efficiency in random wireless ad hoc

  19. Context-Aware Protocol Engines for  Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2009-01-01

    Context-Aware Protocol Engines for Ad Hoc Networks J. J.we call a context-aware protocol engine. With a CAPE, nodesthe context-aware protocol engine (CAPE) as an instantiation

  20. Truthful resource management in wireless ad hoc networks 

    E-Print Network [OSTI]

    Cai, Jianfeng

    2005-11-01

    In wireless mobile ad hoc networks (MANETs), cooperation cannot be an im- plicit assumption anymore. Each profit-oriented network node has the intention to be selfish due to limited resource possession. In this dissertation, we investigate...

  1. Mobilized ad-hoc networks: A reinforcement learning approach

    E-Print Network [OSTI]

    Chang, Yu-Han

    2003-12-04

    Research in mobile ad-hoc networks has focused on situations in which nodes have no control over their movements. We investigate an important but overlooked domain in which nodes do have control over their movements. ...

  2. DISS. ETH NO. 16800 Understanding Ad hoc Networks

    E-Print Network [OSTI]

    of this dissertation investigates the newly-found freedom enabled by battery-powered devices: mobility. OneDISS. ETH NO. 16800 Understanding Ad hoc Networks From Geometry to Mobility A dissertation submitted to the SWISS FEDERAL INSTITUTE OF TECHNOLOGY ZURICH for the degree of Doctor of Sciences presented

  3. Limited Flooding Protocol for Mobile Ad hoc Networks Mieso Denko

    E-Print Network [OSTI]

    Goddard, Wayne

    Limited Flooding Protocol for Mobile Ad hoc Networks Mieso Denko Department of Computing propose a multipath routing protocol called Limited Flooding. The protocol is fully reactive and does not entail the compu- tation of routing tables. It uses the basic features of flooding but restricts packet

  4. Energy-Efficient Topology Control in Cooperative Ad Hoc Networks

    E-Print Network [OSTI]

    Wang, Yu

    Energy-Efficient Topology Control in Cooperative Ad Hoc Networks Ying Zhu, Minsu Huang, Siyuan Chen cooperative energy spanners in which the energy efficiency of individual paths are guaranteed. Both proposed of cooperative communication in various wireless network applications: energy efficient routing [23], [24], [25

  5. Smart Services for Ad Hoc Databases University of Washington

    E-Print Network [OSTI]

    Matrajt, Graciela

    data-base from lists of addresses of nearby schools, locations of resources (e.g., ambulances), and contact information for emergency workers. · A consulting business analyst assembles an ad hoc data- base of commercial database management systems are prohibitive, especially without access to dedicated IT staff

  6. Elective Participation in Ad Hoc Networks Based on Energy Consumption

    E-Print Network [OSTI]

    Deng, Jing

    Elective Participation in Ad Hoc Networks Based on Energy Consumption Marc R. Pearlman , Jing Deng of determining the op- timal transmission radius for minimal interference and energy consumption is considered be significant. There- fore, in order to more aggressively conserve energy, one must Currently with the GE Global

  7. An Energy Efficient Location Service for Mobile Ad Hoc etworks

    E-Print Network [OSTI]

    Varela, Carlos

    the distance traveled by the location update and query packets and, thus, at reducing the overall energy cost by the location update and query packets and, thus, to reduce the overall energy cost. 2 Energy Efficient LocationAn Energy Efficient Location Service for Mobile Ad Hoc etworks Zijian Wang1 , Eyuphan Bulut1

  8. Cooperative Cache-Based Data Access in Ad Hoc Networks

    E-Print Network [OSTI]

    Yener, Aylin

    1 Cooperative Cache-Based Data Access in Ad Hoc Networks Guohong Cao, Liangzhong Yin and Chita R: Cooperative cache-based data access framework #12;6 Data Access Framework The cooperative cache-based data data authentication based on sensitivity. #12;16 Conclusion A cooperative cache-based data access

  9. Reducing the Energy Drain in Multihop Ad Hoc Geraud Allard

    E-Print Network [OSTI]

    Mans, Bernard

    that save energy of nodes with low battery but also allow the network to handle more flows. I. INTRODUCTION-efficient routing for Multihop Ad Hoc Networks (MANET) look at extend- ing battery life by minimizing the cost's shortest path algorithm in which we integrate the notion of remaining energy in order to satisfy flow

  10. Service Discovery in Mobile Ad Hoc Networks: A Field Theoretic Approach Vincent Lenders

    E-Print Network [OSTI]

    Lenders, Vincent

    Service Discovery in Mobile Ad Hoc Networks: A Field Theoretic Approach Vincent Lenders , Martin: {lenders, may, plattner}@tik.ee.ethz.ch Abstract Service discovery in mobile ad hoc networks is challeng

  11. TDROP: A routing protocol for physically hierarchical ad hoc mobile networks 

    E-Print Network [OSTI]

    Ahmed, Zaheer

    2000-01-01

    Many protocols for routing in mobile ad hoc networks have been proposed. None of these protocols differentiates mobile nodes based on their physical characteristics and also there is only one proposal for connecting ad hoc ...

  12. Ad hoc networks beyond unit disk graphs Fabian Kuhn Roger Wattenhofer Aaron Zollinger

    E-Print Network [OSTI]

    miniaturization of electronics in general and wireless communication technology in particular is mobile ad hoc networks. Ad hoc networks are formed by mobile devices consisting of, among other components, a processor a weak battery or a small solar cell. Typically, wireless ad hoc networks are intended to be employed

  13. A Mean Field Based Methodology for Modeling Mobility in Ad Hoc Networks

    E-Print Network [OSTI]

    Horváth, András

    the behavior of the system. Index Terms--ad hoc networks, mean field analysis, Petri nets; I. INTRODUCTIONA Mean Field Based Methodology for Modeling Mobility in Ad Hoc Networks Marco Beccuti1--In this paper we propose a methodology for the modeling and analysis of ad hoc networks composed by a large

  14. Wireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale

    E-Print Network [OSTI]

    Gao, Jie

    are not flexible. ­ Vulnerable to attacks. · Ad hoc networks· Ad hoc networks ­ Flexible, easy to deploy, cheaper · Optimal power assignment /transmission range · Optimal scheduling & multi-hop routing · Node are staticWireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale #12

  15. Capacity Region, Minimum Energy and Delay for a Mobile Ad-Hoc Network

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    Capacity Region, Minimum Energy and Delay for a Mobile Ad-Hoc Network Rahul Urgaonkar, Michael J in a mobile ad-hoc network: the capacity region and the minimum energy function of the network. The capacity limits of a mobile ad-hoc network are the capacity region and the minimum energy function of the network

  16. Low-complexity energy-efficient broadcasting in wireless ad-hoc networks using network coding

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    Low-complexity energy-efficient broadcasting in wireless ad-hoc networks using network coding J energy broadcasting in ad-hoc wireless networks is NP-complete [3] and a large number of approximation of minimizing the energy per bit when multicasting in an ad-hoc wireless network. An alternative formulation

  17. Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links

    E-Print Network [OSTI]

    Wang, Yu

    Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links. In this paper, we address the problem of energy efficient reliable routing for wireless ad hoc networks communication, energy efficiency. Ç 1 INTRODUCTION WIRELESS ad hoc networks draw lots of attentions in recent

  18. Asplund et al. Wireless Ad Hoc Dissemination for Search and Rescue Proceedings of the 7th

    E-Print Network [OSTI]

    Asplund et al. Wireless Ad Hoc Dissemination for Search and Rescue Proceedings of the 7th International ISCRAM Conference ­ Seattle, USA, May 2010 1 Wireless Ad Hoc Dissemination for Search and Rescue communication and Internet connectivity. Even if we consider wireless ad hoc communication as a means

  19. A Platform for Implementing Secure Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Farkas, Gyula; Haller, Piroska

    2010-01-01

    We propose a new platform for implementing secure wireless ad hoc networks. Our proposal is based on a modular architecture, with the software stack constructed directly on the Ethernet layer. Within our platform we use a new security protocol that we designed to ensure mutual authentication between nodes and a secure key exchange. The correctness of the proposed security protocol is ensured by Guttman's authentication tests.

  20. Name Service in IPv6 Mobile Ad-hoc Network connected to the Internet

    E-Print Network [OSTI]

    Jeong, Jaehoon "Paul"

    Name Service in IPv6 Mobile Ad-hoc Network connected to the Internet Jaehoon Jeong, Jungsoo Park-hoc network connected to the Internet. The DNS resolution of DNS names of mobile nodes within mobile ad-hoc network is performed by multicast DNS and that of DNS names of nodes in the Internet is performed through

  1. Bluetooth Scatternet Formation for Single-hop Ad Hoc Networks Based on Virtual Positions 43 Bluetooth Scatternet Formation for Single-hop Ad Hoc

    E-Print Network [OSTI]

    Wang, Yu

    Bluetooth Scatternet Formation for Single-hop Ad Hoc Networks Based on Virtual Positions 43 Bluetooth Scatternet Formation for Single-hop Ad Hoc Networks Based on Virtual Positions Yu Wang , Ivan, Ontario, Canada Department of Computer Science Illinois Institute of Technology Chicago, Illinois, USA

  2. FaultTolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks

    E-Print Network [OSTI]

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

  3. A Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc

    E-Print Network [OSTI]

    Jaffrès-Runser, Katia

    network when delay, robustness and energy are considered. I. INTRODUCTION Wireless ad hoc and sensor to transmission delay [8], energy consumption [9] or fairness [10] are added on top of its main design goalA Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc Networks Katia

  4. Rethinking Information Theory for Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Andrews, Jeff; Haenggi, Martin; Berry, Randy; Jafar, Syed; Guo, Dongning; Shakkottai, Sanjay; Heath, Robert; Neely, Michael; Weber, Steven; Yener, Aylin

    2007-01-01

    The subject of this paper is the long-standing open problem of developing a general capacity theory for wireless networks, particularly a theory capable of describing the fundamental performance limits of mobile ad hoc networks (MANETs). A MANET is a peer-to-peer network with no pre-existing infrastructure. MANETs are the most general wireless networks, with single-hop, relay, interference, mesh, and star networks comprising special cases. The lack of a MANET capacity theory has stunted the development and commercialization of many types of wireless networks, including emergency, military, sensor, and community mesh networks. Information theory, which has been vital for links and centralized networks, has not been successfully applied to decentralized wireless networks. Even if this was accomplished, for such a theory to truly characterize the limits of deployed MANETs it must overcome three key roadblocks. First, most current capacity results rely on the allowance of unbounded delay and reliability. Second, ...

  5. On the Connectivity in One-Dimensional Ad Hoc Wireless Networks with a Forbidden Zone

    E-Print Network [OSTI]

    On the Connectivity in One-Dimensional Ad Hoc Wireless Networks with a Forbidden Zone Xiaodong Hu1 This paper investigates the connectivity in one-dimensional ad hoc wireless networks with a forbidden zone. We derive the probability of the wireless networks which are composed of exactly m clusters by means

  6. SANS: A Simple Ad Hoc Network Simulator Nicolas Burri, Roger Wattenhofer, Yves Weber, Aaron Zollinger

    E-Print Network [OSTI]

    SANS: A Simple Ad Hoc Network Simulator Nicolas Burri, Roger Wattenhofer, Yves Weber, Aaron present a Simple Ad Hoc Network Simulator SANS particularly intended for the simulation of distributed the concepts and correct usage of SANS as a development, debugging, testing and presentation tool. Together

  7. American Institute of Aeronautics and Astronautics Ad Hoc UAV Ground Network (AUGNet)

    E-Print Network [OSTI]

    Brown, Timothy X.

    American Institute of Aeronautics and Astronautics 1 Ad Hoc UAV Ground Network (AUGNet) Timothy X network with radio nodes mounted at fixed sites, on ground vehicles, and in small (10kg) UAVs. The ad hoc which act as relays. We envision two scenarios for this type of network. In the first, the UAV acts

  8. A SERVICE DISCOVERY THREAT MODEL FOR AD HOC Adrian Leung and Chris Mitchell

    E-Print Network [OSTI]

    Mitchell, Chris

    A SERVICE DISCOVERY THREAT MODEL FOR AD HOC NETWORKS Adrian Leung and Chris Mitchell Information.Leung,C.Mitchell}@rhul.ac.uk Keywords: Security, Secure Service Discovery, Threat Model, Mobile Ad Hoc Networks, MANETs. Abstract. Securing the process of service discovery is one of them. Novel solutions are therefore required. However

  9. DELAR: Device/Energy/Load Aware Relaying in Heterogenous Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Zhang, Yanchao

    - newable energy sources. In DELAR the heterogeneity of nodal energy capabilities or device types, nodalDELAR: Device/Energy/Load Aware Relaying in Heterogenous Wireless Ad Hoc Networks Wei Liu Energy conservation is of great importance for mobile ad hoc networks in which most nodes are equipped

  10. ADHOC MAC: a new, flexible and reliable MAC architecture for ad-hoc networks

    E-Print Network [OSTI]

    Borgonovo, Flaminio

    ADHOC MAC: a new, flexible and reliable MAC architecture for ad-hoc networks F. Borgonovo, A, make the design of a prompt, efficient, flexible, and reliable MAC very difficult. An ad hoc network.e., transmissions that reach all terminals within the range allowed by the transmitting power. Due to radio range

  11. Energy-Efficiency of Cooperative Sensing Schemes in Ad hoc WLAN Cognitive Radios

    E-Print Network [OSTI]

    Namboodiri, Vinod

    Energy-Efficiency of Cooperative Sensing Schemes in Ad hoc WLAN Cognitive Radios Reshma Syeda, we study and analyse the energy efficiency of two generic cooperative sensing schemes in an ad hoc a comparative numerical analysis to demonstrate the amount of energy savings of the proposed cooperative schemes

  12. Minimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Minimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks Weifa Abstract-- Most mobile nodes in a wireless ad hoc network are powered by energy limited batteries, the limited battery lifetime imposes a constraint on the network performance. Therefore, energy efficiency

  13. EAGR: Energy Aware Greedy Routing Scheme for Wireless Ad hoc Networks Sachin Sharma

    E-Print Network [OSTI]

    Dharmaraja, S.

    EAGR: Energy Aware Greedy Routing Scheme for Wireless Ad hoc Networks Sachin Sharma Tejas Networks, throughput and energy consumption. Keywords: Rate of Energy Consumption, Greedy Routing, Wireless Ad hoc distributed nodes that communicate over a wireless link. In this paper we present a scalable, Energy Aware

  14. On the Energy Efficiency of Cognitive Radios -A Study of the Ad Hoc Wireless LAN Scenario

    E-Print Network [OSTI]

    Namboodiri, Vinod

    On the Energy Efficiency of Cognitive Radios - A Study of the Ad Hoc Wireless LAN Scenario Anm can save energy over a conventional radio in the Ad Hoc Wireless LAN scenario. The interplay between wireless spectrum, has however, resulted in researchers overlooking the importance of energy consumption

  15. Energy Conserving Routing in Wireless Ad-hoc Networks Jae-Hwan Chang and Leandros Tassiulas

    E-Print Network [OSTI]

    Wang, Bing

    Energy Conserving Routing in Wireless Ad-hoc Networks Jae-Hwan Chang and Leandros Tassiulas-- energy-sensitive routing, wireless ad-hoc networks, sensor networks I. INTRODUCTION CONSIDER a group of wireless static nodes is considered as it arises in a rapidly deployed, sensor based, monitoring system

  16. Does Cognition Come at a Net Energy Cost in Ad Hoc Wireless LANs?

    E-Print Network [OSTI]

    Namboodiri, Vinod

    1 Does Cognition Come at a Net Energy Cost in Ad Hoc Wireless LANs? Anm Badruddoza, Vinod that are energy constrained. This work takes a first step in this direction for the ad hoc Wireless LAN scenario the importance of energy consumption in the devices that employ such techniques. Scanning for wireless spectrum

  17. SQL is Dead; Long Live SQL: Lightweight Query Services for Ad Hoc Research Data

    E-Print Network [OSTI]

    Matrajt, Graciela

    SQL is Dead; Long Live SQL: Lightweight Query Services for Ad Hoc Research Data Bill Howe billhowe with ad hoc scientific Q&A. Further: · We reject the conventional wisdom that "scientists won't write SQL a production-quality database server. · We observe that simply sharing examples of SQL queries allows

  18. Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks Paul G. Flikkema and Brent West Department of Electrical Engineering Northern Arizona University Flagstaff, AZ protocol design for wireless ad hoc networks is between proactive and reactive coor- dination, where

  19. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    of a wireless network that is operating on battery power is limited by the capacity of its energy sourceDistributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks of wireless multihop ad hoc net- works can be controlled by varying the transmission power of each node. We

  20. Low-Cost Truthful Multicast in Selfish and Rational Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    en- joy a more flexible composition. A wireless ad hoc network is a collection of radio devices limited transmission power. One of the dis- tinctive features of wireless networks is that the signal sent1 Low-Cost Truthful Multicast in Selfish and Rational Wireless Ad Hoc Networks Weizhao Wang Xiang

  1. Comparative Study of Price-based Resource Allocation Algorithms for Ad Hoc Networks

    E-Print Network [OSTI]

    be an ample alterna- tive. 1. Introduction Mobile ad hoc networks are formed by wireless nodes that move freely and have no fixed infrastructure. Each node in the network may act as a router for other nodes a serious threat to critical infrastructures of the future. Due to the nature of ad hoc wireless networks

  2. A bidding algorithm for optimized utility-based resource allocation in ad hoc networks

    E-Print Network [OSTI]

    for bandwidth allo- cation in wireless ad hoc networks. The quality of service (QoS) levels for each end ad hoc networks are formed by wireless nodes that move freely and have no fixed infrastructure. Each node in the network may act as a router for other nodes, and flows follow a multi-hop path from source

  3. Comparison of two wireless ad hoc routing protocols on a hardware test-bed

    E-Print Network [OSTI]

    Brown, Timothy X.

    Comparison of two wireless ad hoc routing protocols on a hardware test-bed Shweta Bhandare of the rout- ing protocols is carried out using the Click modular router infrastructure on laptops with wireless ethernet cards running Linux. We demonstrate the working of both ad hoc routing protocols through

  4. Coverage Problems in Wireless Ad-hoc Sensor Networks Seapahn Meguerdichian1

    E-Print Network [OSTI]

    technology interfacing with emerging micro-sensor based on MEMs technology [2], is allowing sophisticatedCoverage Problems in Wireless Ad-hoc Sensor Networks Seapahn Meguerdichian1 , Farinaz Koushanfar2}@cs.ucla.edu {farinaz, mbs}@ee.ucla.edu Abstract - Wireless ad-hoc sensor networks have recently emerged as a premier

  5. Interes'ng-Phrase Mining for Ad-Hoc Text Analy'cs

    E-Print Network [OSTI]

    Interes'ng-Phrase Mining for Ad-Hoc Text Analy'cs Klaus Berberich (kberberi Weikum (originally presented at VLDB 2010) #12;Interes'ng-Phrase Mining for Ad-Hoc Text.g., iden'fy characteris'c quota'ons by barack obama) 2 / 27 #12;Interes'ng-Phrase Mining

  6. Report of the Ad Hoc Committee on Washington Natural Resource Agency Reform

    E-Print Network [OSTI]

    Brown, Sally

    Report of the Ad Hoc Committee on Washington Natural Resource Agency Reform February 16, 2010 of the Environment (CoEnv) to make useful contributions to the Governor's natural resource agency reform initiative. As a result, the Washington Natural Resource Agency Reform ad hoc Committee was established and given

  7. Simulation and Evaluation of Unsynchronized Power Saving Mechanisms in Wireless Ad hoc

    E-Print Network [OSTI]

    Braun, Torsten

    Simulation and Evaluation of Unsynchronized Power Saving Mechanisms in Wireless Ad hoc Networks@sics.se Abstract. Power saving mechanisms in wireless ad hoc network nodes mainly switch off the transmission proposed power saving approach based on asynchronous wake-up patterns and wake-up announcements integrated

  8. Using Traffic Flow for Cluster Formation in Vehicular Ad-hoc Networks

    E-Print Network [OSTI]

    Weigle, Michele

    Using Traffic Flow for Cluster Formation in Vehicular Ad-hoc Networks Mohammad S. Almalag of the traffic will flow. I. INTRODUCTION Vehicular Ad Hoc Networks (VANETs) are considered to be a class MANETs. Nodes in VANETs have more processing power and storage space and typically have no battery

  9. Cognitive radio ad hoc networks (CRAHNs): Cognitive radio ad hoc networks (CRAHNs): Resource allocation techniques based on Bio-inspired computing

    E-Print Network [OSTI]

    Singh, Santosh Kumar

    2010-01-01

    Spectrum is a scarce commodity, and considering the spectrum scarcity faced by the wireless-based service providers led to high congestion levels. Technical inefficiencies from pooled spectrum (this is nothing but the "common carrier principle" adopted in oil/gas/electricity pipelines/networks.), since all ad hoc networks share a common pool of channels, exhausting the available channels will force ad hoc networks to block the services. Researchers found that cognitive radio (CR) technology may resolve the spectrum scarcity. CR network proved to next generation wireless communication system that proposed as a way to reuse under-utilised spectrum of licensee user (primary network) in an opportunistic and non-interfering basis. A CR is a self-configuring entity in a wireless networking that senses its environment, tracks changes, and frequently exchanges information with their networks. Adding this layer of such intelligence to the ad hoc network by looking at the overall geography of the network known as cogni...

  10. Quantitative Analysis of Transmission Power Control in Wireless Ad-hoc Networks

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    -hoc network is determined by the transmission power of the stations. Be- cause different topologies have transmis- sion power is determined by the network load, the number of stations, and the network size1 Quantitative Analysis of Transmission Power Control in Wireless Ad-hoc Networks Seung-Jong Park

  11. XTC: A Practical Topology Control Algorithm for Ad-Hoc Networks Roger Wattenhofer and Aaron Zollinger

    E-Print Network [OSTI]

    over several small (energy-efficient) hops. For this purpose each node in the ad-hoc network chooses buildings. In this paper we present the XTC1 topology control algorithm that works i) without GPS and ii

  12. 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

  13. Quality of Service (QoS) security in mobile ad hoc networks 

    E-Print Network [OSTI]

    Lu, Bin

    2006-10-30

    With the rapid proliferation of wireless networks and mobile computing applications, Quality of Service (QoS) for mobile ad hoc networks (MANETs) has received increased attention. Security is a critical aspect of QoS ...

  14. Hierarchical Skeletons and ad hoc Parallelism Marcus I. Marr and Murray Cole

    E-Print Network [OSTI]

    Cole, Murray

    Hierarchical Skeletons and ad hoc Parallelism Marcus I. Marr and Murray Cole Department of Computer Science, University of Edinburgh, email: marr@dcs.ed.ac.uk We investigate the controlled introduction

  15. Reliability and energy-efficiency in wireless ad-hoc networks

    E-Print Network [OSTI]

    Srinivas, Anand, 1979-

    2004-01-01

    In this thesis, we address issues related to reliability and energy-efficiency in wireless ad hoc networks. In the first part of the work, we deal with the problem of simultaneously routing data along multiple disjoint ...

  16. Autonomous Undersea Systems Network (AUSNet) Protocols To Support Ad-Hoc AUV Communications

    E-Print Network [OSTI]

    semi-autonomous networked robots. Emerging flexible low bandwidth, energy efficient architectures opposed to network support) data transmissions. Current efforts are focused on transitionAutonomous Undersea Systems Network (AUSNet) ­ Protocols To Support Ad-Hoc AUV Communications

  17. Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer Valoria Laboratory, University of South Brittany Nicolas.Le-Sommer@univ-ubs.fr Abstract With the proliferation of mobiles devices

  18. The design and implementation of a distributed photo sharing Android application over ad-hoc wireless

    E-Print Network [OSTI]

    Li, HaoQi, M. Eng. Massachusetts Institute of Technology

    2012-01-01

    We present a distributed photo-sharing Android application, CameraDP, that primarily relies on ad-hoc Wifi. The app runs on top of the novel DIstributed Programming Layer Over Mobile Agents (DIPLOMA) programming abstraction. ...

  19. Distributed Call Admission Control for Ad Hoc Shahrokh Valaee and Baochun Li

    E-Print Network [OSTI]

    Li, Baochun

    structure of management schemes in an ad hoc network may allow destructive operation of mali- cious sources -- such as the The authors are with the Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University

  20. Energy Efficient Broadcast in Wireless Ad hoc Networks with Hitch-hiking

    E-Print Network [OSTI]

    Wu, Jie

    , weather forecasting, home appliance control, and protec- tion against bioterrorism. Ad hoc networks can of applications that can improve quality of life, and even save lives. Sensor networks find their appli- cation

  1. Tree Based Broadcast in Ad Hoc Networks Alpar Juttner1,2

    E-Print Network [OSTI]

    Jüttner, Alpár

    , Broadcast, Multicast, Routing algorithms, Wireless LANs. 1 #12;1 Introduction Mobile ad hoc networks (MANETs infrastructure in such a way, that each communi- cating device (hereafter node) can serve as a router

  2. Reverse Nearest Neighbors Search in Ad-hoc Subspaces Man Lung Yiu

    E-Print Network [OSTI]

    Mamoulis, Nikos

    Reverse Nearest Neighbors Search in Ad-hoc Subspaces Man Lung Yiu Department of Computer Science, H.2.4.h Query processing, H.2.4.k Spatial databases Contact Author: Man Lung Yiu Department

  3. Secure Neighborhood Discovery: A Fundamental Element for Mobile Ad Hoc Networking

    E-Print Network [OSTI]

    Capkun, Srdjan

    devices. Static ad hoc or mesh networks are being formed by home computers with roof-top antennas. Low, topology control, transmission scheduling, energy-efficient communication, as well as physical access

  4. Analyzing the Impact of Mobility in Ad Hoc Networks Vincent Lenders, Jorg Wagner, and Martin May

    E-Print Network [OSTI]

    Lenders, Vincent

    Analyzing the Impact of Mobility in Ad Hoc Networks Vincent Lenders, J¨org Wagner, and Martin May Computer Engineering and Networks Laboratory ETH Zurich 8092 Zurich, Switzerland lenders

  5. An Adaptive Routing Mechanism For Ad Hoc Wireless Sensor Jane E Tateson and Ian W Marshall, BTexact

    E-Print Network [OSTI]

    Haddadi, Hamed

    An Adaptive Routing Mechanism For Ad Hoc Wireless Sensor Networks Jane E Tateson and Ian W Marshall for a network of ad hoc wireless sensor nodes. The mechanism enables sensor nodes to minimize route cost by varying their transmission range, and by experimenting with the neighbours from which they forward data

  6. Power Control MAC Protocol Analysis and Improvement for Ad Hoc Networks Ping Ding, JoAnne Holliday, Aslihan Celik

    E-Print Network [OSTI]

    Holliday, JoAnne

    Power Control MAC Protocol Analysis and Improvement for Ad Hoc Networks Ping Ding, JoAnne Holliday power control protocols have been proposed to address the limited power supplies in ad hoc networks. Recent protocols suggest varying the transmission power such that the RTS/CTS handshake is done

  7. Ad-hoc Limited Scale-Free Models for Unstructured Peer-to-Peer Networks Hasan Guclu

    E-Print Network [OSTI]

    Yuksel, Murat

    , search success rate, routing reachability and stability) de- pend on the capability of preserving structure even over the churn caused by the ad-hoc nodes joining or leaving the network. Preserving mainly depends on the capability of preserving structure even over the churn caused by the ad-hoc nodes

  8. Int. J. Ad Hoc and Ubiquitous Computing, Vol. 1, No. 4, 2006 239 Copyright 2006 Inderscience Enterprises Ltd.

    E-Print Network [OSTI]

    Maróti, Miklós

    Int. J. Ad Hoc and Ubiquitous Computing, Vol. 1, No. 4, 2006 239 Copyright © 2006 Inderscience: sensor networks; ad hoc networks; ubiquitous computing; time synchronisation; clock synchronisation and Ubiquitous Computing, Vol. 1, No. 4, pp.239­251. Biographical notes: Branislav Kusý is a Research Assistant

  9. Energy-Aware Secure Multicast Communication In Wireless Ad-Hoc Networks Loukas Lazos, and Radha Poovendran

    E-Print Network [OSTI]

    Lazos, Loukas

    Energy-Aware Secure Multicast Communication In Wireless Ad-Hoc Networks Loukas Lazos, and Radha Poovendran Abstract-- In this paper we address the problem of efficiently securing multicast communication in energy constrained wireless ad hoc networks. We show that existing scalable key distribution techniques

  10. A Lightweight Encryption Scheme for Network-Coded Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    schemes. Index Terms--Mobile ad hoc networks, energy saving, network coding, lightweight encryption. ! 1 a lower energy consumption in MANETs [6]­[8]. The energy saving comes from fact that less transmissions operations, this means 1/4 energy can be saved. Besides basic transmissions, energy consumption can also come

  11. JTP: An Energy-conscious Transport Protocol for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    JTP: An Energy-conscious Transport Protocol for Wireless Ad Hoc Networks (Technical Report BUCS the energy gains of JTP over one-size-fits-all transport protocols. I. INTRODUCTION Motivation and Scope physical to transport [8], [9]. JAVeLEN's design ensures that energy gains obtained in one layer would

  12. Exploiting Trust Relations for Nash Equilibrium Efficiency in Ad Hoc Networks

    E-Print Network [OSTI]

    Baras, John S.

    Exploiting Trust Relations for Nash Equilibrium Efficiency in Ad Hoc Networks Shanshan Zheng, Tao where the nodes' payoffs are affected by their trust relations. We characterize the Nash equilibrium the interactions among nodes as a game, the Nash equilibria are used to study the operating points of the network

  13. On Data-Centric Trust Establishment in Ephemeral Ad Hoc Networks

    E-Print Network [OSTI]

    Chen, Ing-Ray

    On Data-Centric Trust Establishment in Ephemeral Ad Hoc Networks Maxim Raya, Panagiotis that the traditional notion of trust as a relation among entities, while useful, becomes insufficient for emerging data-centric the traditional notion of trust to data-centric trust: trustworthiness attributed to node- reported data per se

  14. Resilient Data-Centric Storage in Wireless Ad-Hoc Sensor Networks

    E-Print Network [OSTI]

    Chuang, John C.-I.

    Resilient Data-Centric Storage in Wireless Ad-Hoc Sensor Networks Abhishek Ghose, Jens Grossklags to the limited battery life of sensor devices. It has been shown that data-centric methodologies can be used to solve this problem efficiently. In data-centric storage, a recently proposed data dissemina- tion

  15. Non-Blocking, Localized Routing Algorithm for Balanced Energy Consumption in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Yu, Chansu

    relevant nodes but also to balance individual battery levels. Unbalanced energy usage will result1 Non-Blocking, Localized Routing Algorithm for Balanced Energy Consumption in Mobile Ad Hoc Networks Kyungtae Woo, Chansu Yu, and Dongman Lee Hee Yong Youn Ben Lee School of Engineering Information

  16. Mobility Models for Ad hoc Network Simulation Guolong Lin, Guevara Noubir, and Rajmohan Rajaraman

    E-Print Network [OSTI]

    Chan, Agnes Hui

    present the random waypoint model as a renewal process and derive an accurate characterizationMobility Models for Ad hoc Network Simulation Guolong Lin, Guevara Noubir, and Rajmohan Rajaraman.neu.edu Abstract-- In this paper, we propose a novel general technique, based on renewal theory, for analyzing

  17. Mobility Models for Ad hoc Network Simulation Guolong Lin, Guevara Noubir, and Rajmohan Rajaraman

    E-Print Network [OSTI]

    Rajaraman, Rajmohan

    are twofold: #15; Analytical: We present the random waypoint model as a renewal process and derive an accurateMobility Models for Ad hoc Network Simulation Guolong Lin, Guevara Noubir, and Rajmohan Rajaraman@ccs.neu.edu Abstract--- In this paper, we propose a novel general technique, based on renewal theory, for analyzing

  18. Energy consumption models for ad-hoc mobile Emmanuel Lochin1

    E-Print Network [OSTI]

    Lochin, Emmanuel

    1 Energy consumption models for ad-hoc mobile terminals Emmanuel Lochin1 Anne Fladenmuller1 Jean describes a set of experiments based on ACPI BIOS measurements which evaluate the energy consumption of an IEEE802.11 wireless net- work interface. Based on our ACPI measurements, two models of energy

  19. Delay and Capacity Trade-offs in Mobile Ad Hoc Networks: A Global Perspective

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    Mazumdar, Ness Shroff School of Electrical and Computer Engineering Purdue University West Lafayette, IN 47907, USA Email: {gsharma,shroff}@ecn.purdue.edu Department of Electrical and Computer Engineering the delay and capacity trade-offs in mobile ad hoc networks. This line of investigation started

  20. Outage in a Cellular Network Overlaid with an Ad hoc Network: The Uplink Case

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    Outage in a Cellular Network Overlaid with an Ad hoc Network: The Uplink Case Arshdeep S. Kahlon}@sce.carleton.ca Abstract--We analyze the uplink outage probability at the randomly, but not necessarily independently nor, large-scale power control, and the knowledge of the initial outages in the absence of the secondary

  1. Asymptotic Outage Analysis of General Motion-Invariant Ad Hoc Networks

    E-Print Network [OSTI]

    Haenggi, Martin

    Asymptotic Outage Analysis of General Motion-Invariant Ad Hoc Networks Riccardo Giacomelli Dept Dame, IN, USA E-mail: mhaenggi@nd.edu Abstract--The outage analysis of networks with randomly a homogeneous Poisson point process. In this paper, we show that in great generality, the outage probability

  2. A Power Efficient Scheduling Mechanism for an IEEE 802.11 Multiple Rate Ad Hoc Network

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    that of 802.11 PSM. Keywords: Ad Hoc Network, DCF, 802.11 PSM, Beacon Interval, and ATIM Window 1 Introduction Mechanism (802.11 PSM) that allows a wireless STA to go from the active state to doze or power-saving state

  3. Progressive Network Coding for Message-Forwarding in Ad-Hoc Wireless Networks

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    repetition-forward and progressive network coding are analyzed with respect to different transmit power. This paper considers the multi-hop transmission prob- lem in wireless ad-hoc networks. In a three-node sce of multi- hop transmission. The new framework, exploiting the technology of progressive network coding

  4. Scalable, Ad Hoc Deployable RF-based Localization Nirupama Bulusu, Vladimir Bychkovskiy, Deborah Estrin John Heidemann

    E-Print Network [OSTI]

    Heidemann, John

    monitoring in the water and soil, tagging small animals unobtrusively, or tagging small and light objects hardware and energy constrained de- vices, for noisy, unpredictable environments and for very large ad hoc, despite be- ing largely unattended, overcoming energy limitations and a lack of pre

  5. Performance Comparison of Neighbor Discovery Protocols in Wireless Ad-Hoc Network 

    E-Print Network [OSTI]

    Pandey, Sanat Kumar

    2015-08-05

    In this thesis we consider the problem of neighbor discovery in synchronous single hop wireless ad-hoc networks. The central problem is to establish a broadcasting sequence such that only one transmitter broadcasts at a time while all others listen...

  6. Capacity Bounds for Energy Efficient Data Streaming in Homogeneous Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Li, Zongpeng

    Capacity Bounds for Energy Efficient Data Streaming in Homogeneous Wireless Ad Hoc Networks Hanan activation schemes with provable asymptotic bounds on the capacity and energy efficiency of the induced add to the noise levels of each other and cause the overall network capacity to decrease

  7. Cooperative Energy Spanners: Energy-Efficient Topology Control in Cooperative Ad Hoc Networks

    E-Print Network [OSTI]

    Wang, Yu

    Cooperative Energy Spanners: Energy-Efficient Topology Control in Cooperative Ad Hoc Networks Ying introduce a new topology control problem: energy-efficient topology control problem with cooperative communication, and propose two topology control algorithms to build cooperative energy spanners in which

  8. Energy-Efficient Distributed Constructions of Minimum Spanning Tree for Wireless Ad-hoc

    E-Print Network [OSTI]

    Khan, Maleq

    1 Energy-Efficient Distributed Constructions of Minimum Spanning Tree for Wireless Ad-hoc Networks and energy efficient for being practical. Motivated by these considerations, we study the performance of a class of simple and local algorithms called Nearest Neighbor Tree (NNT) algorithms for energy

  9. Price/Utility-based Optimized Resource Allocation in Wireless Ad hoc Networks

    E-Print Network [OSTI]

    Price/Utility-based Optimized Resource Allocation in Wireless Ad hoc Networks Calin Curescu of Service (QoS) levels for each end-to-end flow are expressed using resource-utility functions, and our algorithms aim to maximise the aggregated utility of the flows. The scheme differentiates between applica

  10. An Energy Efficient MAC Protocol for Fully Connected Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Zhuang, Weihua

    1 An Energy Efficient MAC Protocol for Fully Connected Wireless Ad Hoc Networks Kamal Rahimi Abstract--Energy efficiency is an important performance mea- sure of wireless network protocols, especially for battery-powered mobile devices such as smartphones. This paper presents a new energy-efficient medium

  11. DataCentric Routing for Mobile Ad Hoc Networks Edward Woodrow

    E-Print Network [OSTI]

    Heinzelman, Wendi

    networks that support efficient data and route discovery based on metadata queries. Most ad hoc routing SPIN­IT (Sensor Protocols for Information via Negotiation ­ Information Transfer) and SPIN­DL (­ Directory Listing) use descriptive metadata to search the network for data of interest, and to establish

  12. Improved Power-Delay Trade-off in Wireless Ad Hoc Networks Using Opportunistic Routing

    E-Print Network [OSTI]

    Lee, Yong Hoon

    Improved Power-Delay Trade-off in Wireless Ad Hoc Networks Using Opportunistic Routing Won power- delay trade-off than the conventional routing while providing up to a logarithmic boost that the power can be reduced at the expense of increased delay for both scenarios, but better trade-off can

  13. 14. A TAXONOMY OF DATA COMMUNICATION PROTOCOLS FOR VEHICULAR AD HOC NETWORKS

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    1 14. A TAXONOMY OF DATA COMMUNICATION PROTOCOLS FOR VEHICULAR AD HOC NETWORKS Yousef efficiency. In this paper, we provide the first known taxonomy of VANET data communication protocols, based, vehicle connectivity, urgency, and message contents. The taxonomy provides fundamental blocks in VANET

  14. Impact of Social Relation and Group Size in Multicast Ad Hoc Networks

    E-Print Network [OSTI]

    Wang, Xinbing

    1 Impact of Social Relation and Group Size in Multicast Ad Hoc Networks Yi Qin, Riheng Jia, Jinbei wireless social networks. We adopt the two-layer network model, which includes the social layer and the networking layer. In the social layer, the social group size of each source node is modeled as power

  15. Supporting Secure Ad-hoc User Collaboration in Grid Environments Markus Lorch, Dennis Kafura

    E-Print Network [OSTI]

    Cao, Yong

    Supporting Secure Ad-hoc User Collaboration in Grid Environments Markus Lorch, Dennis Kafura is a key requirement. Current grid security mechanisms support individual users who are members of well-defined virtual organizations. Recent research seeks to provide manageable grid security services for self

  16. Route Throughput Analysis with Spectral Reuse for Multi-Rate Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    networks (MANETs) have received a lot of attention for its flexible network architecture. While many network (MANET) is a flexible and dynamic architecture that is attractive due to its ease in network1 Route Throughput Analysis with Spectral Reuse for Multi-Rate Mobile Ad Hoc Networks Lien-Wu Chen

  17. Energy-Balanced Cooperative Routing in Multihop Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Wang, Yu

    Energy-Balanced Cooperative Routing in Multihop Wireless Ad Hoc Networks Siyuan Chen Minsu Huang. In this paper, we aim to study the impact of cooperative routing on balancing the energy distribution among their transmission power, our cooperative routing method can balance the energy among neighboring nodes and maximize

  18. 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

  19. LHAP: A Lightweight Network Access Control Protocol for Ad-Hoc Networks

    E-Print Network [OSTI]

    Xu, Shouhuai

    , One-way Key Chain, TESLA I. INTRODUCTION In ad hoc wireless networks, no base stations exist and every of the nodes relaying the packets. For example, since mobile hosts are usually battery powered, they are susceptible to battery exhaustion attacks [36]. Clearly, a network access control capability is essential

  20. Energy-based adaptation in simulations of survivability of ad hoc communication

    E-Print Network [OSTI]

    Energy-based adaptation in simulations of survivability of ad hoc communication Massimiliano Raciti by the IDS. The approach is based on a model for accounting CPU energy consumption in network simulation are overloaded or not available. Unfortunately, the constrained capacity of their batteries and the energy

  1. UAV surveillance using multihop ad-hoc wireless networks: a demonstrator

    E-Print Network [OSTI]

    Boucherie, Richard J.

    de Graaf and Gerard Hoekstra shelf quadrotor drones and wireless routers to create an ad-hoc network based on optimized link state routing, extending the operational range of the drones. 1 Introduction, flying robots equipped with cameras, often referred to as drones, have been used to overcome

  2. TCP Performance over Mobile Ad-hoc Networks -A Quantitative Study

    E-Print Network [OSTI]

    Park, Seung-Jong "Jay"

    gaining maturity, some researchers have lately shifted focus to the transport layer performance in ad-hoc networks [8], [9], [10]. Since TCP (Transmission Control Protocol) is by far the most used transport pro notification (ELFN) to the source from the link failure point. The source, upon receiving the ELFN freezes TCP

  3. Modular Topology Control and Energy Model for Wireless Ad Hoc Sensor Networks

    E-Print Network [OSTI]

    Jay Yang, Shanchieh

    Modular Topology Control and Energy Model for Wireless Ad Hoc Sensor Networks Niranjan in a harsh terrain typically are battery operated and, therefore, require energy efficient network protocols. In order to ease the analysis of the energy usage of proposed network protocols, this paper proposes

  4. Energy savings in wireless ad hoc sensor networks as a result of network synchronisation

    E-Print Network [OSTI]

    Haddadi, Hamed

    Energy savings in wireless ad hoc sensor networks as a result of network synchronisation Antonio of oceanographic monitoring using a collegiate-managed autonomous network of energy-conscious wireless sensors. We-to-node synchronised transmissions in order to reduce overhearing and therefore reduce energy expenses. SSSNP (Self

  5. ENERGY-AWARE SECURE MULTICAST COMMUNICATION IN AD-HOC NETWORKS USING GEOGRAPHIC LOCATION INFORMATION

    E-Print Network [OSTI]

    Lazos, Loukas

    ENERGY-AWARE SECURE MULTICAST COMMUNICATION IN AD-HOC NETWORKS USING GEOGRAPHIC LOCATION INFORMATION Loukas Lazos, Radha Poovendran Network Security and Cryptography Laboratory University by NSF grant ANI-0093187 and ARO grant DAAD-190210242 ABSTRACT The problem of securing multicast

  6. Exploiting Overhearing: Flow-Aware Routing for Improved Lifetime in Ad Hoc Networks

    E-Print Network [OSTI]

    Mans, Bernard

    neighboring flows and adapt their local routing dynamically. By combining this awareness with battery- aware flow and neighborhood is then presented in Section II-D. By combining the flow awareness with batteryExploiting Overhearing: Flow-Aware Routing for Improved Lifetime in Ad Hoc Networks Nirisha

  7. By-Law on ad hoc Consultation with MAUT [Approved April 16, 2015 Council Meeting] MAUT supports collegial governance and open communication and welcomes invitation from

    E-Print Network [OSTI]

    Shoubridge, Eric

    1 By-Law on ad hoc Consultation with MAUT [Approved April 16, 2015 Council Meeting] Preamble MAUT-Law concerns ad hoc requests for consultation with MAUT. It does not concern participation of MAUT governed by the MAUT Constitution and/or University Regulations. Principles and process An ad hoc

  8. IEEE ICC 2014 -Ad-hoc and Sensor Networking Symposium 978-1-4799-2003-7/14/$31.00 2014 IEEE 305

    E-Print Network [OSTI]

    Bahk, Saewoong

    IEEE ICC 2014 - Ad-hoc and Sensor Networking Symposium 978-1-4799-2003-7/14/$31.00 ©2014 IEEE 305 Ds Data packet of sequence number s A L Acknowledgement Channel sensing Forwarding data packet IEEE ICC 2014 - Ad-hoc and Sensor Networking Symposium 306 #12;IEEE ICC 2014 - Ad-hoc and Sensor Networking

  9. PNNI routing support for ad hoc mobile networking: A flat architecture

    SciTech Connect (OSTI)

    Martinez, L.; Sholander, P.; Tolendino, L.

    1997-12-01

    This contribution extends the Outside Nodal Hierarchy List (ONHL) procedures described in ATM Form Contribution 97-0766. These extensions allow multiple mobile networks to form either an ad hoc network or an extension of a fixed PNNI infrastructure. This contribution covers the simplest case where the top-most Logical Group Nodes (LGNs), in those mobile networks, all reside at the same level in a PNNI hierarchy. Future contributions will cover the general case where those top-most LGNs reside at different hierarchy levels. This contribution considers a flat ad hoc network architecture--in the sense that each mobile network always participates in the PNNI hierarchy at the preconfigured level of its top-most LGN.

  10. PNNI routing support for ad hoc mobile networking: The multilevel case

    SciTech Connect (OSTI)

    Martinez, L.; Sholander, P.; Tolendino, L.

    1998-01-01

    This contribution extends the Outside Nodal Hierarchy List (ONHL) procedures described in ATM Forum Contributions 97-0766 and 97-0933. These extensions allow multiple mobile networks to form either an ad hoc network or an extension of a fixed PNNI infrastructure. A previous contribution (97-1073) covered the simplest case where the top-most Logical Group Nodes (LGNs), in those mobile networks, all resided at the same level in a PNNI hierarchy. This contribution covers the more general case wherein those top-most LGNs may reside at different PNNI hierarchy levels. Both of the SNL contributions consider flat ad hoc network architectures in the sense that each mobile network always participates in the PNNI hierarchy at the pre-configured level of its top-most LGN.

  11. A Dirichlet reputation system in reliable routing of wireless ad hoc network

    SciTech Connect (OSTI)

    Yang, Dr. Li [University of Tennessee, Knoxville (UTK); Cui, Xiaohui [ORNL; Cemerlic, Alma [University of Tennessee, Knoxville (UTK)

    2010-01-01

    Ad hoc networks are very helpful in situations when no fixed network infrastructure is available, such as natural disasters and military conflicts. In such a network, all wireless nodes are equal peers simultaneously serving as both senders and routers for other nodes. Therefore, how to route packets through reliable paths becomes a fundamental problems when behaviors of certain nodes deviate from wireless ad hoc routing protocols. We proposed a novel Dirichlet reputation model based on Bayesian inference theory which evaluates reliability of each node in terms of packet delivery. Our system offers a way to predict and select a reliable path through combination of first-hand observation and second-hand reputation reports. We also proposed moving window mechanism which helps to adjust ours responsiveness of our system to changes of node behaviors. We integrated the Dirichlet reputation into routing protocol of wireless ad hoc networks. Our extensive simulation indicates that our proposed reputation system can improve good throughput of the network and reduce negative impacts caused by misbehaving nodes.

  12. Channel Sharing of Competing Flows in Ad Hoc Networks Yu Wang J. J. Garcia-Luna-Aceves

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    again. Due to its stability and long-term fairness, the binary exponential backoff (BEB) is favored proposed for ad hoc networks. The BEB scheme is very effective in col- lision resolution when nodes face

  13. Channel Sharing of Competing Flows in Ad Hoc Networks Yu Wang J. J. GarciaLunaAceves

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    again. Due to its stability and long­term fairness, the binary exponential backoff (BEB) is favored proposed for ad hoc networks. The BEB scheme is very effective in col­ lision resolution when nodes face

  14. Measurements from an 802.11b Mobile Ad Hoc Network Vincent Lenders, Jorg Wagner and Martin May

    E-Print Network [OSTI]

    Lenders, Vincent

    Measurements from an 802.11b Mobile Ad Hoc Network Vincent Lenders, J¨org Wagner and Martin May Computer Engineering and Networks Laboratory ETH Zurich 8092 Zurich, Switzerland {lenders, may

  15. Ad-hoc Limited Scale-Free Models for Unstructured Peer-to-Peer Networks

    E-Print Network [OSTI]

    Guclu, Hasan; Yuksel, Murat

    2008-01-01

    Several protocol efficiency metrics (e.g., scalability, search success rate, routing reachability and stability) depend on the capability of preserving structure even over the churn caused by the ad-hoc nodes joining or leaving the network. Preserving the structure becomes more prohibitive due to the distributed and potentially uncooperative nature of such networks, as in the peer-to-peer (P2P) networks. Thus, most practical solutions involve unstructured approaches while attempting to maintain the structure at various levels of protocol stack. The primary focus of this paper is to investigate construction and maintenance of scale-free topologies in a distributed manner without requiring global topology information at the time when nodes join or leave. We consider the uncooperative behavior of peers by limiting the number of neighbors to a pre-defined hard cutoff value (i.e., no peer is a major hub), and the ad-hoc behavior of peers by rewiring the neighbors of nodes leaving the network. We also investigate t...

  16. Inspiration from genetics to promote recognition and protection within ad hoc sensor networks

    E-Print Network [OSTI]

    Korsnes, Reinert

    2009-01-01

    This work illustrates potentials for recognition within {\\em ad hoc} sensor networks if their nodes possess individual inter-related biologically inspired genetic codes. The work takes ideas from natural immune systems protecting organisms from infection. Nodes in the present proposal have individual gene sets fitting into a self organised phylogenetic tree. Members of this population are genetically ''relatives''. Outsiders cannot easily copy or introduce a new node in the network without going through a process of conception between two nodes in the population. Related nodes can locally decide to check each other for their genetic relation without directly revealing their gene sets. A copy/clone of a gene sequence or a random gene set will appear as alien. Nodes go through a cycle of introduction (conception or ''birth'') with parents in the network and later exit from it (''death''). Hence the phylogenetic tree is dynamic or possesses a genetic drift. Typical lifetimes of gene sets and number of offspring ...

  17. Transmission Capacity of Wireless Ad Hoc Networks with Energy Harvesting Nodes

    E-Print Network [OSTI]

    Vaze, Rahul

    2012-01-01

    Transmission capacity of an ad hoc wireless network is analyzed when each node of the network harvests energy from nature, e.g. solar, wind, vibration etc. Transmission capacity is the maximum allowable density of nodes, satisfying a per transmitter-receiver rate, and an outage probability constraint. Energy arrivals at each node are assumed to follow a Bernoulli distribution, and each node stores energy using an energy buffer/battery. For ALOHA medium access protocol (MAP), optimal transmission probability that maximizes the transmission capacity is derived as a function of the energy arrival distribution. Game theoretic analysis is also presented for ALOHA MAP, where each transmitter tries to maximize its own throughput, and symmetric Nash equilibrium is derived. For CSMA MAP, back-off probability and outage probability are derived in terms of input energy distribution, thereby characterizing the transmission capacity.

  18. 2014 IEEE 28-th Convention of Electrical and Electronics Engineers in Israel The Ergodic Rate Density of MIMO Ad-hoc

    E-Print Network [OSTI]

    Bergel, Itsik

    2014 IEEE 28-th Convention of Electrical and Electronics Engineers in Israel The Ergodic Rate the scaling laws of the Ergodic Rate Density (ERD) in ALOHA Wireless Ad-hoc Networks (WANETs) that utilize bound and the accuracy of the estimated parameters. I. INTRODUCTION Wireless Ad-hoc Networks (WANETs

  19. Abstract--Wireless Sensor Network (WSN) is an emerging special type of ad-hoc wireless networks technology. It is

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract-- Wireless Sensor Network (WSN) is an emerging special type of ad-hoc wireless networks that differentiate it from other types of wireless networks. These differences raise new challenges to be overcome are wireless networks where nodes can communicate wirelessly with each other without the need for a fixed

  20. 228 IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 7, NO. 2, APRIL 1999 Ad Hoc Mobility Management with

    E-Print Network [OSTI]

    Haas, Zygmunt J.

    the construction of UQS through the balanced incomplete block designs. The average cost, due to call loss is sometimes necessary to reduce the cost of mobility management. Index Terms--Ad hoc network, balanced on the average cost, we investigate the tradeoff between the system reliability and the cost of location updates

  1. Int. J. Ad Hoc and Ubiquitous Computing, Vol. 4, No. 5, 2009 251 Multi-hop scatternet formation and routing

    E-Print Network [OSTI]

    Wang, Yu

    Int. J. Ad Hoc and Ubiquitous Computing, Vol. 4, No. 5, 2009 251 Multi-hop scatternet formation of Computer Science, Illinois Institute of Technology, Chicago, IL 60616, USA E-mail: xli@cs.iit.edu Abstract: This paper addresses the scatternet formation for large scale multi-hop Bluetooth networks. We first describe

  2. Abstract-Mobile Ad Hoc NETworks (MANETs) are an emerging class of network architectures that are characterized

    E-Print Network [OSTI]

    Perkins, Dmitri

    of fixed infrastructure. The primary motivation for such networks is increased flexibility and mobilityAbstract- Mobile Ad Hoc NETworks (MANETs) are an emerging class of network architectures that are characterized by their highly dynamic topology, limited resources (i. e., bandwidth and power), and lack

  3. Ad-hoc Authorship Attribution Competition, part of ALLC/ACH 2004 CNG Method with Weighted Voting

    E-Print Network [OSTI]

    Keselj, Vlado

    Ad-hoc Authorship Attribution Competition, part of ALLC/ACH 2004 CNG Method with Weighted Voting Vlado Keselj and Nick Cercone ({vlado,nick}cs.dal.ca) CNG Method for Authorship Attribution. The Common N-Grams (CNG) classification method for authorship attribution (AATT) was described in [2

  4. Ad-hoc Authorship Attribution Competition, part of ALLC/ACH 2004 CNG Method with Weighted Voting

    E-Print Network [OSTI]

    Keselj, Vlado

    Ad-hoc Authorship Attribution Competition, part of ALLC/ACH 2004 CNG Method with Weighted Voting Vlado Ke#20;selj and Nick Cercone (fvlado,nickg@cs.dal.ca) CNG Method for Authorship Attribution. The Common N-Grams (CNG) classi#12;cation method for authorship attribution (AATT) was described in [2

  5. Load-Sensitive Transmission Power Control in Wireless Ad-hoc Networks Seung-Jong Park Raghupathy Sivakumar

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    transmis- sion power depends on several network characteristics such as the number of stations, the network problem in ad-hoc wireless networks. The transmission power of the stations in a network determines the network topol- ogy, The transmission power of the stations in a network deter- mines the network topology

  6. Energy and Bandwidth-Efficient Key Distribution in Wireless Ad-Hoc Networks: A Cross-Layer

    E-Print Network [OSTI]

    Lazos, Loukas

    messages, and (d) average update energy. For each metric, we formulate an optimization problem and show1 Energy and Bandwidth-Efficient Key Distribution in Wireless Ad-Hoc Networks: A Cross metrics: (a) member key storage, (b) group controller (GC) transmissions, (c) multicast group (MG) update

  7. Energy and Bandwidth-Efficient Key Distribution in Wireless Ad-Hoc Networks: A Cross-Layer

    E-Print Network [OSTI]

    Poovendran, Radha

    ) multicast group (MG) update messages, and (d) average update energy. For each metric, we formulate1 Energy and Bandwidth-Efficient Key Distribution in Wireless Ad-Hoc Networks: A Cross, and GC transmissions, while significantly reducing the energy and bandwidth consumption of the network

  8. Energy-Efficient Location Service Protocols for Mobile Ad Hoc Networks Zijian Wang, Eyuphan Bulut, and Boleslaw K. Szymanski

    E-Print Network [OSTI]

    Bystroff, Chris

    Energy-Efficient Location Service Protocols for Mobile Ad Hoc Networks Zijian Wang, Eyuphan Bulut the location of the destination node. Seldom they consider energy efficiency in their designs energy efficiency and improve the query success rate in comparison to the previously proposed algorithms

  9. 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

  10. AN ECONOMICS-BASED POWER-AWARE PROTOCOL FOR COMPUTATION DISTRIBUTION IN MOBILE AD-HOC NETWORKS

    E-Print Network [OSTI]

    Shang, Li

    AN ECONOMICS-BASED POWER-AWARE PROTOCOL FOR COMPUTATION DISTRIBUTION IN MOBILE AD-HOC NETWORKS Li, Princeton, NJ 08544, USA ABSTRACT In this paper, we present a new economics-based power- aware protocol, called the distributed economic subcontracting protocol (DESP), that dynamically distributes task

  11. Int. J. Ad Hoc and Ubiquitous Computing, Vol. , No. , 2012 1 Worst-case Latency of Broadcast in Intermittently

    E-Print Network [OSTI]

    Int. J. Ad Hoc and Ubiquitous Computing, Vol. , No. , 2012 1 Worst-case Latency of Broadcast one year as a Research Fellow at Trinity College Dubin. He received his MSc degree in computer science and engi- neering in 2005 and his PhD in computer science in 2011 both from Link¨oping University. His Ph

  12. Int. J. Ad Hoc and Ubiquitous Computing, Vol. 1, No. 4, 2006 203 Copyright 2006 Inderscience Enterprises Ltd.

    E-Print Network [OSTI]

    Huang, Xinming

    Int. J. Ad Hoc and Ubiquitous Computing, Vol. 1, No. 4, 2006 203 Copyright © 2006 Inderscience and Ubiquitous Computing, Vol. 1, No. 4, pp.203­209. Biographical notes: Xin-Ming Huang is an Assistant Professor, embedded systems and reconfigurable computing. Jing Ma received BE and ME Degrees from North

  13. How gas-dynamic flare models powered by Petschek reconnection differ from those with ad hoc energy sources

    E-Print Network [OSTI]

    Longcope, Dana

    2015-01-01

    Aspects of solar flare dynamics, such as chromospheric evaporation and flare light-curves, have long been studied using one-dimensional models of plasma dynamics inside a static flare loop, subjected to some energy input. While extremely successful at explaining the observed characteristics of flares, all such models so far have specified energy input ad hoc, rather than deriving it self-consistently. There is broad consensus that flares are powered by magnetic energy released through reconnection. Recent work has generalized Petschek's basic reconnection scenario, topological change followed by field line retraction and shock heating, to permit its inclusion into a one-dimensional flare loop model. Here we compare the gas dynamics driven by retraction and shocking to those from more conventional static loop models energized by ad hoc source terms. We find significant differences during the first minute, when retraction leads to larger kinetic energies and produces higher densities at the loop top, while ad h...

  14. Characterizing the Interaction Between Routing and MAC Protocols in Ad-Hoc Networks

    SciTech Connect (OSTI)

    Barrett, C. L. (Christopher L.); Drozda, M. (Martin); Marathe, A. (Achla); Marathe, M. V. (Madhav V.)

    2002-01-01

    We empirically study the effect of mobility on the performance of protocols designed for wireless ad-hoc networks. An important objective is to study the interaction of the Routing and MAC layer protocols under different mobility parameters. We use three basic mobility models: grid mobility model, random waypoint model, and exponential correlated random model. The performance of protocols is measured in terms of (i) latency, (ii) throughput, (iii) number of packets received, (iv) long term fairness and (v) number of control packets at the MAC and routing layer level. Three different commonly studied routing protocols are used: AODV, DSR and LAR1. Similarly three well known MAC protocols are used: MACA, 802.1 1 and CSMA. Our main contribution is simulation based experiments coupled with rigorous statistical analysis to characterize the interaction of MAC layer protocols with routing layer protocols in ad-hoc networks. From the results, we can conclude the following: e No single MAC or Routing protocol dominated the other protocols in their class. Probably more interestingly, no MAURouting protocol combination was better than other combinations over all scenarios and response variables. 0 In general, it is not meaningful to speak about a MAC or a routing protocol in isolation. Presence of interaction leads to trade-offs between the amount of control packets generated by each layer. The results raise the possibility of improving the performance of a particular MAC layer protocol by using a cleverly designed routing protocol or vice-versa. Thus in order to improve the performanceof a communication network, it is important to study the entire protocol stack as a single algorithmic construct; optimizing individual layers in the seven layer OS1 stack will not yield performance improvements beyond a point. A methodological contribution of this paper is the use of statistical methods such as analysis of variance (ANOVA), to characterize the interaction between the protocols, mobility patterns and speed. Such methods allow us to analyze complicated experiments with large input space in a systematic manner.

  15. Spectrum Sharing between Cooperative Relay and Ad-hoc Networks: Dynamic Transmissions under Computation and Signaling Limitations

    E-Print Network [OSTI]

    Sun, Yin; Li, Yunzhou; Zhou, Shidong; Xu, Xibin

    2010-01-01

    This paper studies a spectrum sharing scenario between an uplink cognitive relay network (CRN) and some nearby low power ad-hoc networks. In particular, the dynamic resource allocation of the CRN is analyzed, which aims to minimize the average interfering time with the ad-hoc networks subject to a minimal average uplink throughput constraint. A long term average rate formula is considered, which is achieved by a half-duplex decode-and-forward (DF) relay strategy with multi-channel transmissions. Both the source and relay are allowed to queue their data, by which they can adjust the transmission rates flexibly based on sensing and predicting the channel state and ad-hoc traffic. The dynamic resource allocation of the CRN is formulated as a non-convex stochastic optimization problem. By carefully analyzing the optimal transmission time scheduling, it is reduced to a stochastic convex optimization problem and solved by the dual optimization method. The signaling and computation processes are designed carefully t...

  16. The Capacityand Energy Efficiency of Wireless Ad Hoc Networks with MultipacketReception

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

    Meng, T. Bits-per-joule capacity of energy-limited wirelessThe Capacity and Energy Efficiency of Wireless Ad Hocl ( n ) Figure 5: Capacity and energy efficiency tradeoff

  17. Canonical and kinetic forms of the electromagnetic momentum in an ad hoc quantization scheme for a dispersive dielectric

    SciTech Connect (OSTI)

    Garrison, J.C.; Chiao, R.Y.

    2004-11-01

    An ad hoc quantization scheme for the electromagnetic field in a weakly dispersive, transparent dielectric leads to the definition of canonical and kinetic forms for the momentum of the electromagnetic field in a dispersive medium. The canonical momentum is uniquely defined as the operator that generates spatial translations in a uniform medium, but the quantization scheme suggests two possible choices for the kinetic momentum operator, corresponding to the Abraham or the Minkowski momentum in classical electrodynamics. Another implication of this procedure is that a wave packet containing a single dressed photon travels at the group velocity through the medium. The physical significance of the canonical momentum has already been established by considerations of energy and momentum conservation in the atomic recoil due to spontaneous emission, the Cerenkov effect, the Doppler effect, and phase matching in nonlinear optical processes. In addition, the data of the Jones and Leslie radiation pressure experiment is consistent with the assignment of one ({Dirac_h}/2{pi})k unit of canonical momentum to each dressed photon. By contrast, experiments in which the dielectric is rigidly accelerated by unbalanced electromagnetic forces require the use of the Abraham momentum.

  18. A Time-Slotted On-Demand Routing Protocol for Mobile Ad Hoc Unmanned Vehicle Systems

    SciTech Connect (OSTI)

    Hope Forsmann; Robert Hiromoto; John Svoboda

    2007-04-01

    The popularity of UAVs has increased dramatically because of their successful deployment in military operations, their ability to preserve human life, and the continual improvements in wireless communication that serves to increase their capabilities. We believe the usefulness of UAVs would be dramatically increased if formation flight were added to the list of capabilities. Currently, sustained formation flight with a cluster of UAVs has only been achieved with two nodes by the Multi-UAV Testbed at the Massachusetts Institute of Technology. (Park, 2004) Formation flight is a complex operation requiring the ability to adjust the flight patterns on the fly and correct for wind gusts, terrain, and differences in node equipment. All of which increases the amount of inner node communication. Since one of the problems with MANET communication is network congestion, we believe a first step towards formation flight can be made through improved inner node communication. We have investigated current communication routing protocols and developed an altered hybrid routing protocol in order to provide communication with less network congestion.

  19. Ad hoc cloud computing 

    E-Print Network [OSTI]

    McGilvary, Gary Andrew

    2014-11-27

    Commercial and private cloud providers offer virtualized resources via a set of co-located and dedicated hosts that are exclusively reserved for the purpose of offering a cloud service. While both cloud models appeal to ...

  20. With respect to energy balance in mobile ad hoc networks, there have been active researches proposing energy-aware

    E-Print Network [OSTI]

    Yu, Chansu

    hoc communication, because nodes work both as host and as router, nodes can easily consume much energy consume more energy than others and deplete its energy early [5]. This can cause an unbalanced nodes easily consume more energy than others. Even if the route path is too stable to be changed

  1. Workforce Management Office WORKFORCE AND SUCCESSION PLANNING

    E-Print Network [OSTI]

    2012 Workforce Management Office NOAA 1/1/2012 WORKFORCE AND SUCCESSION PLANNING Toolkit to Identify and Address Strategic Talent Gaps #12;Workforce & Succession Planning Toolkit NOAA Workforce .......................................................................................................3 Workforce Planning

  2. 2013 Nuclear Workforce Development ...

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

    Nuclear Workforce Development Day Tuesday, October 22, 2013 Nuclear Medicine Topics: Pathways of Practice in Nuclear Medicine Radiopharmacy Patient Care ...

  3. Administering Workforce Discipline

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-10-27

    To provide requirements and responsibilities for administering workforce discipline that includes disciplinary, adverse, and alternative corrective actions in the Department of Energy (DOE).

  4. Capacity consideration of wireless ad hoc networks

    E-Print Network [OSTI]

    Tan, Yusong

    2008-01-01

    in Electrical Engineering (Communication Theory and Systems)of Science Electrical Engineering (Communication Theory andPhilosophy Electrical Engineering (Communication Theory and

  5. Communication Paradigms for Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Collins, Justin Scott

    2014-01-01

    Mur06] Amy L. Murphy et al. “Lime: A Coordination Middlewareof mobile devices using the LIME II tuple-space framework. ”Bogdan Carbunar and et al. “Lime revisited. ” In Mobile

  6. Adaptive protocols for mobile ad hoc networks 

    E-Print Network [OSTI]

    Holland, Gavin Douglas

    2005-02-17

    to take advantage of the presence of multirate links. We then investigate the performance of iv TCP, showing how communication outages caused by link failures and routing delays can be very detrimental to its performance. In response, we present a solution.... : : : : : : : : : : : : : : : : : : : : : : : : 62 15 Performance of RBAR when a simple heuristic is used by the sender to try and predict the best data rate for the conditions, in an e?ort to reduce the frequency of the necessity for reservation subheaders...

  7. Clock synchronization for mobile ad hoc networks 

    E-Print Network [OSTI]

    Chandra, Rajan

    2013-02-22

    synchronization uses MANet specific communication primitives with Minimum Connected Dominating Set (MCDS) approximation algorithms. This involves using a subset of nodes in the network to broadcast clock information to neighboring nodes. Several MCDS approximation...

  8. Multicast Routing in Ad-Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2007-01-01

    or IRs, which are wireless routers. However, it will beIR 100a-1001‘ is a wireless router with an IP address and anot be based on wireless links for router interconnection.

  9. DOE Advanced Scientific Advisory Committee (ASCAC): Workforce...

    Office of Scientific and Technical Information (OSTI)

    (ASCAC): Workforce Subcommittee Letter Citation Details In-Document Search Title: DOE Advanced Scientific Advisory Committee (ASCAC): Workforce Subcommittee Letter...

  10. Better Buildings Neighborhood Program Workforce Peer Exchange...

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

    Neighborhood Program Workforce Peer Exchange Call: Contractor Pricing Better Buildings Neighborhood Program Workforce Peer Exchange Call: Contractor Pricing Better Buildings...

  11. Workforce Management Office (WFMO) Functional Statements WORKFORCE MANAGEMENT OFFICE

    E-Print Network [OSTI]

    May 2014 Workforce Management Office (WFMO) ­ Functional Statements WORKFORCE MANAGEMENT OFFICE The Workforce Management Office (WFMO) is the servicing Human Resource Organization for NOAA and is the principal contact point with the Department of Commerce (DOC) Office of Human Resources Management. WFMO

  12. Workforce Diversity Action Plans

    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 AdministrationRobust,Field-effectWorking WithTelecentricNCubictheThepresented in the7WorkerWorkforce Diversity

  13. Addressing the workforce pipeline challenge

    SciTech Connect (OSTI)

    Leonard Bond; Kevin Kostelnik; Richard Holman

    2006-11-01

    A secure and affordable energy supply is essential for achieving U.S. national security, in continuing U.S. prosperity and in laying the foundations to enable future economic growth. To meet this goal the next generation energy workforce in the U.S., in particular those needed to support instrumentation, controls and advanced operations and maintenance, is a critical element. The workforce is aging and a new workforce pipeline, to support both current generation and new build has yet to be established. The paper reviews the challenges and some actions being taken to address this need.

  14. Better Buildings: Workforce: Spotlight on Fayette County, Pennsylvania...

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

    Workforce: Spotlight on Fayette County, Pennsylvania: Developing the Skills and Tools for Workforce Success Better Buildings: Workforce: Spotlight on Fayette County, Pennsylvania:...

  15. Workforce Statistics - NA SH | National Nuclear Security Administratio...

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Workforce Statistics - NA SH Workforce Statistics - NA SH NA SH FY14 Year End...

  16. Workforce Statistics - NA 00 | National Nuclear Security Administratio...

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Workforce Statistics - NA 00 Workforce Statistics - NA 00 NA 00 FY14 Semi Annual...

  17. Workforce Training for the Electric Power Sector: Awards | Department...

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

    Workforce Training for the Electric Power Sector: Awards Workforce Training for the Electric Power Sector: Awards List of Workforce Training Awards for the Electric Power Sector...

  18. Quality Control, Standardization of Upgrades, and Workforce Expectatio...

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

    Quality Control, Standardization of Upgrades, and Workforce Expectations Quality Control, Standardization of Upgrades, and Workforce Expectations Better Buildings Residential...

  19. Better Buildings Workforce Peer Exchange Quality Assurance Strategies...

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

    Quality Assurance Strategies Better Buildings Workforce Peer Exchange Quality Assurance Strategies Better Buildings Workforce Peer Exchange Quality Assurance Strategies, call...

  20. A picture of the UK scientific workforce

    E-Print Network [OSTI]

    A picture of the UK scientific workforce Diversity data analysis for the Royal Society Summary report #12;2 A picture of the UK scientific workforce Cover image: one of the first examples of genetic fingerprinting developed by Alec Jeffreys FRS, 1984. A picture of the UK scientific workforce Diversity data

  1. Departmental Workforce | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center HomeVehicleDepartment ofGraphics » DOE Logo,Departmental Workforce

  2. SECTION 3161 ANNOUNCEMENT: New Draft Workforce Restructuring...

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

    policies of" Section 3161 of the National Defense Authorization Act for Fiscal Year 1993 to mitigate the impact of any potential workforce reductions on contractor employees at...

  3. Recovery Act Workforce Development | Department of Energy

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

    Announces Nearly 100 Million for Smart Grid Workforce Training and Development. Congressional Testimony Recovery Act Recovery Act Interoperability Recovery Act SGIG...

  4. Strengthening the Workforce in Better Buildings Neighborhoods...

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

    Program "Strengthening the Workforce in Better Buildings Neighborhoods" video. MUSIC GRAPHIC: Saving energy, creating jobs, improving neighborhoods Gil Sperling, U.S....

  5. Better Buildings Neighborhood Program Workforce Peer Exchange...

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

    Workforce Training BPI, HERS, etc. Community Colleges, Apprenticeships Pathways Out of Poverty, Green Jobs Innovation Fund Community Based Training Programs www.greenforall.org...

  6. Developing the New Bio-economy Workforce

    Broader source: Energy.gov [DOE]

    Daniel Cassidy, National Institute of Food and Agriculture, presents on developing the new bioeconomy workforce for the Biomass/Clean Cities States Webinar.

  7. Acquisition Workforce Information | Department of Energy

    Office of Environmental Management (EM)

    information has been moved to Powerpedia - Acquisition Workforce. Aviation Management Green Leases Executive Secretariat Energy Reduction at HQ Real Estate Approvals Documents...

  8. Better Buildings Neighborhood Program Workforce Peer Exchange...

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

    Better Buildings Neighborhood Program Workforce Peer Exchange Call: Working with the Real Estate Sector Call Slides and Discussion Summary Agenda * Call Logistics and Attendance...

  9. Recovery Act Workforce Development | Department of Energy

    Energy Savers [EERE]

    in communities across the country. WHAT'S NEW IN WORKFORCE DEVELOPMENT April 2012: Building the Next Generation of Smart Grid Workers Students in Connecticut participated in...

  10. Status and EAC Recommendations for Electricity Delivery Workforce...

    Energy Savers [EERE]

    Status and EAC Recommendations for Electricity Delivery Workforce (September 2014) Status and EAC Recommendations for Electricity Delivery Workforce (September 2014) This memo,...

  11. Better Buildings: Workforce, Spotlight on Maine: Contractor Sales...

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

    Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions Better Buildings: Workforce, Spotlight on Maine: Contractor Sales Training Boosts Energy...

  12. Workforce Training for the Electric Power Sector: Map of Projects...

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

    Workforce Training for the Electric Power Sector: Map of Projects Workforce Training for the Electric Power Sector: Map of Projects Map showing the number of projects awarded in...

  13. Quality Control, Standardization of Upgrades, and Workforce Expectatio...

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

    Expectations Better Buildings Residential Network Workforce Peer Exchange Call Series: Quality Control, Standardization of Upgrades, and Workforce Expectations, March 27, 2014....

  14. 2013 Annual Workforce Analysis and Staffing Plan Report - NNSA...

    Office of Environmental Management (EM)

    NNSA Production Office 2013 Annual Workforce Analysis and Staffing Plan Report - NNSA Production Office Managers perform an annual workforce analysis of their organization and...

  15. 2012 Annual Workforce Analysis and Staffing Plan Report - Nevada...

    Energy Savers [EERE]

    Plan Report - Nevada Site Office 2012 Annual Workforce Analysis and Staffing Plan Report - Nevada Site Office Managers perform an annual workforce analysis of their...

  16. 2012 Workforce Analysis and Staffing Plan Report Memo, Guidance...

    Office of Environmental Management (EM)

    Workforce Analysis and Staffing Plan Report Memo, Guidance and Template 2012 Workforce Analysis and Staffing Plan Report Memo, Guidance and Template The Department of Energy...

  17. 2011 Workforce Analysis and Staffing Plan Report Memo, Guidance...

    Office of Environmental Management (EM)

    Workforce Analysis and Staffing Plan Report Memo, Guidance and Template 2011 Workforce Analysis and Staffing Plan Report Memo, Guidance and Template The Department of Energy...

  18. 2014 Annual Workforce Analysis and Staffing Plan Report - Carlsbad...

    Energy Savers [EERE]

    Plan Report - Carlsbad Field Office 2014 Annual Workforce Analysis and Staffing Plan Report - Carlsbad Field Office Managers perform an annual workforce analysis of their...

  19. 2013 Workforce Analysis and Staffing Plan Report Memo, Guidance...

    Office of Environmental Management (EM)

    3 Workforce Analysis and Staffing Plan Report Memo, Guidance and Template 2013 Workforce Analysis and Staffing Plan Report Memo, Guidance and Template The Department of Energy...

  20. 2010 Annual Workforce Analysis and Staffing Plan Report - Los...

    Energy Savers [EERE]

    Plan Report - Los Alamos Site Office 2010 Annual Workforce Analysis and Staffing Plan Report - Los Alamos Site Office Managers perform an annual workforce analysis of their...

  1. 2011 Annual Workforce Analysis and Staffing Plan Report - Carlsbad...

    Energy Savers [EERE]

    Plan Report - Carlsbad Field Office 2011 Annual Workforce Analysis and Staffing Plan Report - Carlsbad Field Office Managers perform an annual workforce analysis of their...

  2. 2012 Annual Workforce Analysis and Staffing Plan Report - Carlsbad...

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    Plan Report - Carlsbad Field Office 2012 Annual Workforce Analysis and Staffing Plan Report - Carlsbad Field Office Managers perform an annual workforce analysis of their...

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  4. 2014 Annual Workforce Analysis and Staffing Plan Report - Nevada...

    Energy Savers [EERE]

    Plan Report - Nevada Field Office 2014 Annual Workforce Analysis and Staffing Plan Report - Nevada Field Office Managers perform an annual workforce analysis of their...

  5. INDOOR POSITIONING AN AD-HOC POSITIONING SYSTEM Rainer Mautz

    E-Print Network [OSTI]

    to enable continuous tracking of the location of devices in all environments. Highly accurate, reliable 3D computers, printers, or simple tags with wireless radio connections that are `intelligent' enough to be able

  6. Throughput optimal routing in wireless Ad-hoc networks

    E-Print Network [OSTI]

    Zhuang, Hairuo

    2010-01-01

    in Electrical Engineering (Communication Theory and Systems)Ph. D. in Electrical Engineering (Communication Theory andin Electrical Engineering (Communication Theory and Systems)

  7. Power and spectrum efficient communications in wireless ad hoc networks

    E-Print Network [OSTI]

    Qu, Qi

    2008-01-01

    in Electrical and Computer Engineering (Communication Theoryin Electrical Engineering (Communication Theory and Systems)in Electrical Engineering (Communication Theory and Systems)

  8. Information Dissemination in Mobile Ad-Hoc Geosensor Networks

    E-Print Network [OSTI]

    Duckham, Matt

    , and Lars Kulik3 1 National Center for Geographic Information and Analysis University of Maine, Orono, ME-aware systems are founded on a centralized model of information systems, typified by the client-server model- dancy. 1 Introduction Increasing decentralization is a widespread feature of information system archi

  9. Power Optimization in Fault-Tolerant Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Grosu, Radu

    devices that communicate over wireless links. Mobile devices are typically powered by batteries applications [3] [4] [5] [6] need sensor nodes to be mobile making such networks similar to MANETS. However, embedded devices and impracticality of recharging batteries. Thus, mobile sensor networks make

  10. Energy Aware Implementation of an Ad Hoc Routing Protocol

    E-Print Network [OSTI]

    Brown, Timothy X.

    to the world of research. This thesis is a product of his never-ending knowledge, ingenious ideas, constant, and encouragement. I would like to thank my parents for inspiring me to pursue higher education. I would lik

  11. Delay Optimal Event Detection on Ad Hoc Wireless Sensor Networks

    E-Print Network [OSTI]

    Kumar, Anurag

    , Bangalore, INDIA email: kprem@ece.iisc.ernet.in, prasanthi.m@gmail.com, anurag@ece.iisc.ernet.in We consider causal order. In this case, the decision statistic depends on the network delays as well, whereas in the network­oblivious case, the decision statistic does not depend on the network delays. This yields

  12. Towards the Efficient Design of Vehicular Ad-Hoc Networks

    E-Print Network [OSTI]

    Dulmage, Jared

    2012-01-01

    OFDM Outage . . . . . . . . . . .Outage probability vs.vs. SNR . . . . . . . . . . . . . . . . . . . . . . Outage

  13. Wireless Networks wireless ad-hoc and mesh networks

    E-Print Network [OSTI]

    Biagioni, Edoardo S.

    instead of radio waves Wireless Sensor Networks the Internet of Things, IoT #12;wireless mesh networks radio on and receiving a packet requires the most but even leaving on the radio still uses energy keep the radio off as much as possible, limit the number of packets sent hard to know when to turn on the radio

  14. Lifeline: Emergency Ad hoc Network Se-Hang Cheong1

    E-Print Network [OSTI]

    Si, Yain Whar "Lawrence"

    propagation techniques. Lifeline also has the ability to recover from partial crash of network and nodes lost be disrupted during natural disasters, such as earthquakes, hurricane, tsunami, etc. In such situations, mobile from partial crash of network and nodes lost. In this paper, we show how commonly available mobile

  15. Stable Energy-Aware Topology Management in Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2010-01-01

    Different types of nodes consume energy at different rates.less interference and consume less energy. Significant worksnodes can consume large amounts of energy by main- taining

  16. Power and spectrum efficient communications in wireless ad hoc networks

    E-Print Network [OSTI]

    Qu, Qi

    2008-01-01

    A. Bahai, “Energy-efficiency of MIMO and cooperative MIMOMIMO-based cooperative communication for energy-constrainedcooperation, cooperative MIMO can achieve better energy and

  17. Multiple-antenna systems in ad-hoc wireless networks

    E-Print Network [OSTI]

    Govindasamy, Siddhartan, 1975-

    2008-01-01

    The increasing demand for wireless communication services has resulted in crowding of the electromagnetic spectrum. The "spectral-commons" model, where a portion of the electromagnetic spectrum is public and used on an ...

  18. Topic Based Language Models for ad hoc Information Retrieval

    E-Print Network [OSTI]

    Azzopardi, Leif

    University of Paisley Paisley UK E-mail: leif.azzopardi@paisley.ac.uk Mark Girolami Computing Science

  19. Throughput Analysis of Wireless Ad-Hoc Cognitive Radio Networks 

    E-Print Network [OSTI]

    Banaei, Armin

    2014-04-25

    In this dissertation we consider the throughput performance of cognitive radio networks and derive the optimal sensing and access schemes for secondary users that maximizes their sum-throughput while guaranteeing certain ...

  20. SBA: A Simple Backoff Algorithm for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Guérin-Lassous, Isabelle

    approaches modify the BEB (Binary Exponential Backoff) al- gorithm of IEEE 802.11 to provide better. Contrary to the BEB algorithm, SBA has only two distinct contention window sizes. SBA also uses the same

  1. A Benchmarking System for Mobile Ad Hoc Network Routing Protocols

    E-Print Network [OSTI]

    Hiranandani, Daniel

    2012-01-01

    Smart EnergyMap . . . . . . . . . . . . . . . . . . Smart Energy GridSelected for Smart Energy Grid Scenario . . . . . . . . .

  2. A Secure Routing Protocol for Ad Hoc Wireless Networks

    E-Print Network [OSTI]

    Klappenecker, Andreas

    't need to pass through firewalls or gateways Routing protocol controls the network but is based DSR uses source routes in data packets Can lead to DoS #12;Attacks using modification ­ Tunneling Two

  3. 1 Antenna Beamforming and Power Control for Ad Hoc Networks

    E-Print Network [OSTI]

    Ramanathan, Ram

    parameters ­ transmit power, and antenna beam direction ­ and present state-of-the-art methods control includes reduced interference and lower energy consumption. Beamforming and lower powers are also and power control appears to have potential, a number of questions need to be answered: What techniques

  4. A Power Control MAC Protocol for Ad Hoc Networks

    E-Print Network [OSTI]

    Han, Richard Y.

    . Copyright 2002 ACM 1-58113-486-X/02/0009 ...¯ 5.00. D¥BUiFhVGB@BGIBxD¥|§twVGS§I8Hh£vw9£P¥7SXIwAsD¥BSe27I

  5. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01

    classes: regular nodes (RNs) and backbone capable nodes (that consists solely of RNs. We note that for the specialits associated BCNs and RNs will form an access network (

  6. Poster: -Graphs: Flexible Topology Control in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Williamson, Carey

    (m) 0 100 200 300 400 500 600 700 0 100 200 300 400 500 600 700 YCoordinate(m) X Coordinate (m) (c) G consumption. 0 100 200 300 400 500 600 700 0 100 200 300 400 500 600 700 YCoordinate(m) X Coordinate (m) 0 100 200 300 400 500 600 700 0 100 200 300 400 500 600 700 YCoordinate(m) X Coordinate (m) (a) Gm (Initial

  7. Scalable Phrase Mining for Ad-hoc Text Analytics

    E-Print Network [OSTI]

    Waldmann, Uwe

    , customer mail and reports, or Web 2.0 con- tributions offer a great potential for enhancing business, and Web 2.0 community data. This enables advanced Business-Intelligence (BI) ap- plications, or by focusing on a particular time period. We investigate alterna- tive definitions of phrase interestingness

  8. Unified Routing Scheme for Ad-Hoc Internetworking

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2007-01-01

    life of tetherless wireless routers. By contrast, an on-IR is essentially a wireless IP router; with the exceptionswireless environment. In contrast to the IP Internet, mobility of hosts and routers,

  9. Maximizing the throughput of large ad hoc wireless networks

    E-Print Network [OSTI]

    Hua, Y; Huang, Y; Garcia-Luna-Aceves, J J

    2006-01-01

    network consists of wireless routers that are highly coop-point for every m wireless routers in a 2-D This capacitylinks are used for wireless routers). tion rates of a small

  10. Topology management protocols in ad hoc wireless sensor networks 

    E-Print Network [OSTI]

    Kim, Hogil

    2009-05-15

    and destination. The multiple paths discovered are maintained in a memory, i.e., route cache, and can be used either as a backup route for a broken path or to balance network tra c. However, the decision procedure to nd an optimal path to balance network tra c... in this work. From the set S of all sensor nodes, All sensor nodes 1st-layer 2nd-layer Kth -layer Fig. 1. K-Layer Coverage we select only a small number of nodes to form 1-coverage and repeat this process K times to form K-coverage. A set Si, which is ith...

  11. Asymptotically Optimal Geometric Mobile Ad-Hoc Routing Fabian Kuhn

    E-Print Network [OSTI]

    -geometric algorithm that also matches the lower bound, but needs some mem- ory at each node. This establishes

  12. Bid Activation Multiple Access in Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2006-01-01

    12]. Each node bids on a varying number of data slots in acorrect schedule bid for slots. A Data B Fig. 2. E C Data Ddata, A and C will request activation. Hence, B will bid and

  13. Resource Management in Multi-hop Ad Hoc Networks

    E-Print Network [OSTI]

    , they do not provide a way to control the consumption of resources in the network, such as the battery power or the carrying capacity of the nodes. This proposal describes a scheme of path-state and flow : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 5 5.2 Balancing Battery Life

  14. North Dakota Energy Workforce Development

    SciTech Connect (OSTI)

    Carter, Drake

    2014-12-29

    Bismarck State College, along with its partners (Williston State College, Minot State University and Dickinson State University), received funding to help address the labor and social impacts of rapid oilfield development in the Williston Basin of western North Dakota. Funding was used to develop and support both credit and non-credit workforce training as well as four major symposia designed to inform and educate the public; enhance communication and sense of partnership among citizens, local community leaders and industry; and identify and plan to ameliorate negative impacts of oil field development.

  15. Workforce development | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand Dalton Jump to: navigation,Wood County ElectricWorkforce development

  16. Workforce Plans | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    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 GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities.EnergyKirstinMetals Plant isWorkforce AnalysisPlanning

  17. Workforce Development | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'S FUTURE.Energy Wind PowerRegina RameikaWork2Development Workforce

  18. Challenges in implementing green workforce development training

    E-Print Network [OSTI]

    Yeung, Louise H. (Louise Ho-Yee)

    2013-01-01

    To meet the labor demands of green economic development, workforce development programs are increasingly training low-income workers for living wage jobs that contribute to environmental services or benefits. Yet, effectively ...

  19. Strengthening the Workforce in Better Buildings Neighborhoods (Text Version)

    Broader source: Energy.gov [DOE]

    Below is a text version of the Better Buildings Neighborhood Program "Strengthening the Workforce in Better Buildings Neighborhoods" video.

  20. Office of Learning and Workforce Development (HC-20) | Department...

    Energy Savers [EERE]

    compliance reporting, individualgroup training request processing, procurement, and logistics support. The Workforce Development Division will provide corporate assessment,...

  1. Technical Note Post hoc Bayesian model selection

    E-Print Network [OSTI]

    Penny, Will

    Technical Note Post hoc Bayesian model selection Karl Friston , Will Penny The Wellcome Trust and Raftery, 1995; Penny et al., 2004). We will try to illustrate this perspective with a few toy examples

  2. MATERIALS EDUCATION FOR THE CENTURY WORKFORCE

    E-Print Network [OSTI]

    Rubloff, Gary W.

    MATERIALS EDUCATION FOR THE 21ST CENTURY WORKFORCE The 18th Biennial Conference on National Materials Policy May 24-25, 2004 National Academies' Keck Center Washington, DC MONDAY, MAY 24 7:00AM of Maryland Vice President, Federation of Materials Societies 8:30AM Introduction to Materials Mini

  3. Strengthening the Workforce in Better Buildings Neighborhoods

    ScienceCinema (OSTI)

    Sperling, Gil; Adams, Cynthia; Fiori, Laura; Penzkover, Dave; Wood, Danny; Farris, Joshua

    2013-05-29

    The Better Buildings Neighborhood Program is supporting an expanding energy efficiency workforce upgrading buildings in communities around the country. Contractors are being trained and have access to additional job opportunities, spurring local economic growth while helping Americans use less energy, save money, and be more comfortable in their homes and other buildings.

  4. Workforce Development and Wind for Schools (Poster)

    SciTech Connect (OSTI)

    Newcomb, C.; Baring-Gould, I.

    2012-06-01

    As the United States dramatically expands wind energy deployment, the industry is faced with the need to quickly develop a skilled workforce and to address public acceptance. Wind Powering America's Wind for Schools project addresses these challenges. This poster, produced for the American Wind Energy Association's annual WINDPOWER conference, provides an overview of the project, including objectives, methods, and results.

  5. Power and Energy Engineering Workforce Collaborative

    E-Print Network [OSTI]

    needs and global concerns * Source: US Department of Energy, Annual Energy Outlook 2007 Early Release challenges 3.Make the world a better place to live · Energy and Power Engineering is... ­ Exciting ­ Critical1 Power and Energy Engineering Workforce Collaborative NERC Webinar July 8, 2008 #12;22 Overview

  6. Workforce planning for DOE/EM: Assessing workforce demand and supply

    SciTech Connect (OSTI)

    Lewis, R.E.; Ulibarri, C.A.

    1993-10-01

    The US Department of Energy (DOE) has committed to bringing its facilities into regulatory compliance and restoring the environment of sites under its control by the year 2019. Responsibility for accomplishing this goal is vested with the Office of Environmental Restoration and Waste Management (EM). Concerns regarding the availability of workers with the necessary technical skills and the prospect of retraining workers from other programs within DOE or other industries are addressed in this report in several ways. First, various workforce projections relevant to EM occupations are compared to determine common findings and resolve inconsistencies. Second, case studies, interviews, and published data are used to examine the potential availability of workers for these occupations via occupational mobility, training/retraining options, and salary adjustments. Third, demand and supply factors are integrated in a framework useful for structuring workforce analyses. The analyses demonstrate that workforce skills are not anticipated to change due to the change in mission; science, engineering, and technician occupations tend to be mobile within and across occupational categories; experience and on-the-job training are more crucial to issues of worker supply than education; and, the clarity of an organization`s mission, budget allocation process, work implementation and task assignment systems are critical determinants of both workforce need and supply. DOE is encouraged to create a more stable platform for workforce planning by resolving organizational and institutional hindrances to accomplishing work and capitalizing on workforce characteristics besides labor {open_quotes}supply{close_quotes} and demographics.

  7. Identification of Key Barriers in Workforce Development

    SciTech Connect (OSTI)

    2008-03-31

    This report documents the identification of key barriers in the development of an adequate national security workforce as part of the National Security Preparedness Project, being performed under a Department of Energy/National Nuclear Security Administration grant. Many barriers exist that prevent the development of an adequate number of propertly trained national security personnel. Some barriers can be eliminated in a short-term manner, whereas others will involve a long-term strategy that takes into account public policy.

  8. Education and Workforce Development | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatementofApril 25,EVthe next generation workforce is

  9. Workforce Development and Sales Training for Energy Efficiency Contractors

    Broader source: Energy.gov [DOE]

    This webinar covered expectations for growth and training needs, home performance workforce development, weatherization sales training, and enabling contractors to succeed.

  10. Expanding Educational Opportunities for the Wind Energy Workforce...

    Office of Environmental Management (EM)

    is supporting wind energy workforce development and training for the civil design and construction sector. Funding from EERE has enabled curriculum development for the...

  11. 2014 Annual Workforce Analysis and Staffing Plan Report - Portsmouth...

    Office of Environmental Management (EM)

    Office Annual Workforce Analysis and Staffing Plan Report for SUBJECT: Calendar Year 2014 TO: Ms. Karen Boardman, Chair Federal Technical Capability Panel, EA-50383 Reference:...

  12. Energy Efficiency Services Sector: Workforce Size and Expectations for Growth

    E-Print Network [OSTI]

    Goldman, Charles

    2010-01-01

    for nuclear energy (Prelaw 2008). Energy Efficiency ServicesEnergy Efficiency Services Sector: Workforce Size Two implementation contractor respondents mentioned defense, semiconductor, nuclear, and

  13. Better Buildings Neighborhood Program Workforce/Business Partners...

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

    Neighborhood Program WorkforceBusiness Partners Peer Exchange Call: Working with Real Estate Home Inspectors, Exterminators, and other "Non-traditional" Partners Call Slides...

  14. Energy Efficiency Services Sector: Workforce Size and Expectations for Growth

    E-Print Network [OSTI]

    Goldman, Charles

    2010-01-01

    Statistics. Energy Efficiency Services Sector: WorkforceRenewable Energy and Energy Efficiency: Economic Drivers forStatewide Long Term Energy Efficiency Strategic Plan. ” San

  15. Investing in America's Solar Workforce | Department of Energy

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

    expand -- maintaining a skilled workforce remains tremendously important. This is why the Energy Department recently announced its support for the Photovoltaic Online Training...

  16. Better Buildings Workforce Peer Exchange Call: Kick-off Call...

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

    for building successful relationships with contractors * Insights from the contractor's point of view (e.g., on workforce recruitment and retention) * Experiences with contractor...

  17. 2010 Workforce Analysis and Staffing Plan Report Memo, Guidance...

    Broader source: Energy.gov (indexed) [DOE]

    The Department of Energy Federal Technical Capability Order, DOE 0 426.1, requires that managers perform an annual workforce analysis of their organization and develop staffing...

  18. 2014 Workforce Analysis and Staffing Plan Report Memo, Guidance...

    Broader source: Energy.gov (indexed) [DOE]

    The Department of Energy Federal Technical Capability Order, DOE O 426.1, requires that managers perform an annual workforce analysis of their organization and develop staffing...

  19. EAC Recommendations for DOE Action on the Electricity Workforce...

    Energy Savers [EERE]

    investments in training technology. There are two aspects to consider regarding the integration of workforce and technology development needs. One is the impact that new...

  20. Better Buildings Workforce Guidelines for Facility Energy Manager...

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

    Guidelines for Facility Energy Manager - 2014 BTO Peer Review Better Buildings Workforce Guidelines for Facility Energy Manager - 2014 BTO Peer Review Presenter: Phil Coleman,...

  1. Black holes, AdS, and CFTs

    E-Print Network [OSTI]

    Marolf, Donald

    2009-01-01

    Boundary observables and AdS/CFT . . . . .Unitiarity and AdS/CFT . . . . . . . . . . . . Thecharges in asymptotically AdS-spacetimes. Class. Quant.

  2. Clean Technology Evaluation & Workforce Development Program

    SciTech Connect (OSTI)

    Patricia Glaza

    2012-12-01

    The overall objective of the Clean Technology Evaluation portion of the award was to design a process to speed up the identification of new clean energy technologies and match organizations to testing and early adoption partners. The project was successful in identifying new technologies targeted to utilities and utility technology integrators, in developing a process to review and rank the new technologies, and in facilitating new partnerships for technology testing and adoption. The purpose of the Workforce Development portion of the award was to create an education outreach program for middle & high-school students focused on clean technology science and engineering. While originally targeting San Diego, California and Cambridge, Massachusetts, the scope of the program was expanded to include a major clean technology speaking series and expo as part of the USA Science & Engineering Festival on the National Mall in Washington, D.C.

  3. 2012 Annual Workforce Analysis and Staffing Plan Report - Carlsbad

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

    , NA-SH-40 * ED J. Yarrington, HS-10 ED G. Basabilvazo, CBFO ED A. Cooper, CBFO ED J. Waters, CBFO ED DOE M&RC *ED denotes electronic distribution Annual Workforce Analysis and...

  4. 2010 Annual Workforce Analysis and Staffing Plan Report- NNSA HQ

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  5. 2014 Annual Workforce Analysis and Staffing Plan Report- NNSA HQ

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  6. Regional Nuclear Workforce Development in the Central Savannah...

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

    Nuclear Workforce Development in the Central Savannah River Area Dr. Susan A. Winsor Aiken Technical College President: P.O. Box 696, Aiken, SC 29802, winsors@atc.edu Mindy Mets...

  7. 2011 Annual Workforce Analysis and Staffing Plan Report- NNSA HQ

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  8. 2013 Annual Workforce Analysis and Staffing Plan Report- NNSA HQ

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  9. Workforce Overview - 2015 BTO Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReport FY2014 -Energy Costs byofMichelle BuchananatWorkforceWorkforce

  10. Stability of AdS black strings

    E-Print Network [OSTI]

    T. Delsate

    2008-08-14

    We review the recent developements in the stability problem and phase diagram for asymptotically locally $AdS$ black strings. First, we quickly review the case of locally flat black string before turning to the case of locally $AdS$ spacetimes.

  11. AdS$_3$ and AdS$_2$ Magnetic Brane Solutions

    E-Print Network [OSTI]

    Ahmed Almuhairi

    2010-11-04

    We investigate AdS$_3$ and AdS$_2$ magnetic brane solutions within the consistent truncation of AdS$_5 \\times S^5$ supergravity. The AdS$_3$ solution extends earlier work by allowing a general embedding of the magnetic $U(1)$ in $SO(6)$. We determine the ratio of strong- and weak-coupling entropies as a function of this embedding. Further, by considering crossed magnetic fields in different $U(1)$'s we are able to construct a solution that runs from AdS$_5$ in the UV to AdS$_2 \\times R^3$ in the IR. We find the notable result that there is a zero temperature entropy at strong coupling but not at weak coupling. We also show that the AdS$_2$ solution and at least some of the AdS$_3$ solutions are stable within the truncation.

  12. Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs—Summary Report

    SciTech Connect (OSTI)

    O'Neil, Lori Ross; Assante, Michael; Tobey, D. H.; Conway, T. J.; Vanderhorst, Jr, T. J.; Januszewski, III, J.; Leo, R.; Perman, K.

    2013-07-01

    This document is a summarization of the report, Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs, the final report for phase 2 of the SPSP (DOE workforce study) project.

  13. Comment on the new AdS universe

    E-Print Network [OSTI]

    Ozgur Sarioglu; Bayram Tekin

    2008-11-25

    We show that Bonnor's new Anti-de Sitter (AdS) universe and its D-dimensional generalization is the previously studied AdS soliton.

  14. "Materials Education for the 21st Century Workforce"

    E-Print Network [OSTI]

    Rubloff, Gary W.

    roles of materials in information technology, health and biotechnology, national security, energy the professional societes. Other related conferences have included the 2000 NMAB Forum on "Materials in the New"Materials Education for the 21st Century Workforce" Opening Remarks By Aris Christou

  15. Analytical Study of Backoff Algorithms for MAC Protocol in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Manaseer, S.

    Manaseer,S. Ould-Khaoua,M. Mackenzie,L. 22nd Uk Performance Engineering Workshop, Bournemouth University pp 89-94

  16. Improvement of Robustness for Ad Hoc Networks Through Energy-Aware Routing

    E-Print Network [OSTI]

    Engineering 2 InterOperability Laboratory 3 Department of Computer Science University of New Hampshire, Durham,2 , Radim Bartos3 , Michael J. Carter1 , and Sai S. Mupparapu1,2 1 Department of Computer and Electrical

  17. Cross-layer Networking for Peer Databases over Wireless Ad-Hoc Communities

    E-Print Network [OSTI]

    Papapetrou, Evaggelos

    Over the last years, the scientific community has wit- nessed a significant rise of data-centric of the communicating nodes. Since data-centric communication depends on the application layer, the key for providing mostly in wired [1] but also in wireless networks [3]. According to this approach, data-centric

  18. Cross-layer Routing for Peer Database Querying over Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Papapetrou, Evaggelos

    community has witnessed a significant rise of data-centric net- working applications over the last years. Furthermore, the advent of mobile devices has created an increased interest for data-centric applications. On the other hand, although significant work has been performed on data-centric applications over MANETs

  19. On physical carrier sensing for random wireless ad-hoc networks

    E-Print Network [OSTI]

    Wong, Chiu Ngok Eric

    2008-01-01

    in Electrical Engineering (Communication Theory and Systems)Field: Electrical Engineering (Communication Theory andin Electrical Engineering (Communication Theory and Systems)

  20. Cross-layer design of wideband CDMA systems and cooperative diversity for wireless ad hoc networks :

    E-Print Network [OSTI]

    Annavajjala, Ramesh

    2006-01-01

    in Electrical Engineering (Communication Theory and Systems)Ph. D. , Electrical Engineering (Communication Theory andin Electrical Engineering (Communication Theory and Systems)

  1. RaWMS -Random Walk based Lightweight Membership Service for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Cortes, Corinna

    consumption associated with sending and receiving many messages could quickly drain the batteries of mobile-YOSSEF Department of Electrical Engineering, Technion - Israel Institute of Technology and Google Haifa Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel {roy,gabik}@cs.technion.ac.il This paper

  2. Energy-Efficient Transaction Management for Mobile Ad-hoc Network Databases

    E-Print Network [OSTI]

    Gruenwald, Le

    mobile node to support services and applications [6]. Also the battery technology is not developed as rapidly as the mobile devices and wireless technologies, so that the limited battery lifetime is always system. In this system, both clients and servers are mobile, wireless and battery

  3. An Energy-efficient Concurrency Control Algorithm for Mobile Ad-hoc Network Databases

    E-Print Network [OSTI]

    Gruenwald, Le

    and applications [5]. Also battery technology is not developed as rapidly as mobile devices and wireless and battery- powered nodes, and every node can roam freely. A mobile database system built on a MANET is called a MANET database system. In this system, both clients and servers are mobile, wireless and battery

  4. PowerSaving Protocols for IEEE 802.11Based MultiHop Ad Hoc Networks

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    devices supported by battery powers is power saving. Without power, any mobile device will become useless. Battery power is a limited resource, and it is expected that battery technology is not likely to progress as fast as computing and com­ munication technologies do. Hence, how to lengthen the lifetime of batteries

  5. Cross-Layer Design for Energy-Efficient Secure Multicast Communications in Ad Hoc Networks

    E-Print Network [OSTI]

    Poovendran, Radha

    number of mobile personal devices. Most of the sensors are battery- operated and hence, constrained and is the most dominant factor in battery depletion [1]. Many group applications already implemented in wired net significantly reducing due to advances in silicon technologies[1]. However, the power consumption due

  6. Distributed Detection and Localization of Events in Large Ad Hoc Wireless Sensor Networks

    E-Print Network [OSTI]

    Kumar, Anurag

    are application­specific networks that com- prise a large number of tiny, energy­limited, smart sensor devices by . This formulation is motivated by the change detection/isolation framework introduced by Nikiforov [6]. We extend decisions of ALL toggle rapidly. Motivated by this fact, we propose a distributed change detection

  7. Spectrum Leasing via Cooperative Opportunistic Routing in Distributed Ad Hoc Networks: Optimal and Heuristic Policies

    E-Print Network [OSTI]

    Rossi, Michele

    and a set of unlicensed nodes. The primary network consists of a source, a destination and a set Department of Information Engineering, University of Padova, Italy CWCSPR, New Jersey Institute of Technology of additional primary nodes that can act as relays. In addition, the secondary nodes can be used as extra relays

  8. Performance Improvements in Ad Hoc Networks Through Mobility Groups and Channel Diversity

    E-Print Network [OSTI]

    Rossi, Michele

    by using short-range, low-power, low- bandwidth devices (e.g., IEEE 802.15.4 (Zigbee) [5]) to create a city, each with a comput- ing device with both Zigbee and IEEE 802.11 interfaces. All of the people

  9. Poster: Adaptive Topology Control for Wireless Ad-hoc Seung-Jong Park Raghupathy Sivakumar

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    that maximizes network performance. Recently, using effective topology control to optimize energy usage Sivakumar School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, GA 30332 linearly (given that the path loss ex- ponent typically ranges from 2 to 4). Hence, the overall energy con

  10. PERFORMANCE ANALYSIS OF POWER-AWARE ROUTE SELECTION PROTOCOLS IN MOBILE AD HOC NETWORKS

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    , a hybrid protocol like the CMMBCR (Conditional Max-Min Battery Capacity Routing) mechanism has been devised-Max Battery Cost Routing) scheme tries to consider the remaining battery power of nodes to prolong- gardless of the remaining battery power of nodes. Since the transmission network2002: submitted to World

  11. Ad-Hoc Real-time Agent Networks Summer Research Institute

    E-Print Network [OSTI]

    with voracious energy appetites Energy supplies often limited Enablers: Microelectronics Comm/Info Theory/tracking Distributed control of built environments and processes Structural health monitoring Public safety Disaster response Space Biomedical Environmental monitoring we have not yet been able to do #12;Wireless Sensor

  12. On the Modeling of Entities for Ad-Hoc Entity Search in the Web of Data

    E-Print Network [OSTI]

    -Verlag Berlin Heidelberg 2012 #12;134 R. Neumayer, K. Balog, and K. Nørvåg dbpedia:Audi_A4 dbpedia:Volkswagen

  13. Comparison of Two Intrusion Detection Schemes for Sparsely Connected Ad Hoc Networks M. Chuah, P. Yang

    E-Print Network [OSTI]

    Chuah, Mooi-Choo "Mooi"

    ] uses a variant of Telsa [8] to provide source authentication for DSR. All the above approaches suggest

  14. Impact of Asymmetric Traffic Densities on Delay Tolerant Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    is considered as an enabler for driverless cars of the future [1]. Presently, there is a strong need to enable-neighbor communication, for safety appli- cations, and multihop communications for message propagation. Due to frequent vehicular communication for applications such as safety messaging, traffic and congestion monitoring

  15. An Analytical Framework for Neighbor Discovery Strategies in Ad hoc Networks with Sectorized

    E-Print Network [OSTI]

    Park, Joon-Sang

    /reception directions. Neighbor discovery is a process of finding one-hop neighbors and is the first step towards. An analytical model for randomized neighbor discovery algorithms is presented in [9]; however, due to its inherent limitation the model can only be used to analyze randomized neighbor discovery algorithms and thus

  16. High-Precision Ad-Hoc Indoor Positioning in Challenging Industrial Environments

    E-Print Network [OSTI]

    Sreenan, Cormac J.

    infrastructure. Several technologies are assessed with regard to these challenges and their shortcomings relatively quickly and easily. Sample environments include chemical plants and oil or gas rigs. These surveys will cause problems for positioning technologies that use radio propagation methods, line-of-sight methods

  17. ACRR: Ad-hoc On-Demand Distance Vector Routing with Controlled Route Requests Jayesh Kataria*

    E-Print Network [OSTI]

    Sanyal, Sugata

    * Mumbai University, India, jayeshkataria@gmail.com P.S. Dhekne BARC, Mumbai, India, dhekne@barc.gov.in Sugata Sanyal TIFR, Mumbai, India, sanyal@tifr.res.in *Corresponding Author Abstract Reactive routing

  18. Cross-layer design of wideband CDMA systems and cooperative diversity for wireless ad hoc networks :

    E-Print Network [OSTI]

    Annavajjala, Ramesh

    2006-01-01

    High SNR Outage Analysis . . . . . . . . . . .Accuracy of High SNR Outage Probability Approximations . . .of High SNR Outage Probability Expressions . . . . .

  19. A Study of Connectivity in MIMO Fading Ad-Hoc Networks

    E-Print Network [OSTI]

    Yousefi'zadeh, Homayoun; Jafarkhani, Hamid; Kazemitabar, Javad

    2009-01-01

    Approximations to the Outage Capacity of MIMO channels? ,”of connectivity relying on the outage capacity of MIMOis de?ned based on an outage capacity analysis for such

  20. Packet Leashes: A Defense against Wormhole Attacks in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Xu, Wenyuan

    operations, military or police networks, and safety-critical business operations such as oil drilling channel. The main advantage of such networks is low cost of deployment and maintenance, since the nodes

  1. Routing Mechanisms for Mobile Ad Hoc Networks based on the Energy Drain Rate

    E-Print Network [OSTI]

    Obraczka, Katia

    -points are not directly within their radio range. A critical issue for MANETs is that the activity of #12;nodes is power which nodes can be part of an active route. We describe new route selection mechanisms for MANET routing extends nodal battery life and the duration of paths, while CMDR also minimizes the total transmission

  2. Routing Mechanisms for Mobile Ad Hoc Networks based on the Energy Drain Rate

    E-Print Network [OSTI]

    Obraczka, Katia

    ­points are not directly within their radio range. A critical issue for MANETs is that the activity of #12; nodes is power which nodes can be part of an active route. We describe new route selection mechanisms for MANET routing extends nodal battery life and the duration of paths, while CMDR also minimizes the total transmission

  3. Stochastic Traffic and Connectivity Dynamics for Vehicular Ad-Hoc Networks in Signalized Road Systems

    E-Print Network [OSTI]

    Leung, Kin K.

    Engineering, Imperial College London Centre for Transport Studies, Imperial College London {wh.ho, kin

  4. RTRD: Real-Time and Reliable Data Delivery in Ad Hoc Networks

    E-Print Network [OSTI]

    Ravindran, Binoy

    -time task. A real-time task executes on an individual node, with a given termination time tT erm. As shown and has some data which requires to be delivered to another node before tT erm. The time for real-time data delivery is the task's slack time ST, ST = tT erm - tF inish. Before task execution starts, ET

  5. A Self-Organizing Heuristic for Building Optimal Heterogeneous Ad-Hoc Sensor Networks

    E-Print Network [OSTI]

    Minai, Ali A.

    with equal power, which means that they all have the same transmission radius. Such homoge- neous networks-making about transmission power. However, in sufficiently dense networks (or in networks with significant amount of work on heterogeneous networks, mainly due to their flexibility and better fit into potential

  6. Phase Transition Behavior of Message Propagation in Delay Tolerant Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Little, Thomas

    that is used to avoid contention in the system for shared resources and avoid accidents. By interconnecting part of networked information and control systems [1, 2]. Vehicle manufacturers seek to enhance connectivity. Creating safer transportation system is an important goal. One way of achieving safety

  7. MULTIPATH HYBRID AD HOC NETWORKS FOR AVIONICS APPLICATIONS IN DISASTER AREA

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    helicopters up in the sky and first responders on the ground. However, transmitting video and running high for rapidly establishing communication among the helicopters and first responders in a disaster area, among helicopters and ground responders to carry out necessary relief efforts. Our proposed network

  8. A resilient synchronization algorithm for wireless ad hoc and sensor networks based on distributed

    E-Print Network [OSTI]

    Spagnolini, Umberto

    ) to the establishment of period oscillations with the same frequency and, possibly, phase (e.g., for medium access with: (i) construction of a packet, (ii) queuing at the MAC layer, (iii) propagation and (iv a benign environment and cannot survive the presence of malfunctioning nodes in an emergency situation

  9. A New Task-Based Approach for Supporting Distributed Applications on Mobile Ad Hoc Networks1

    E-Print Network [OSTI]

    Little, Thomas

    resources were found near the devices that needed those resources. Embedding of general TGs onto general case of TGs, namely trees. However, this optimal algorithm for tree TGs has a high time complexity

  10. Simultaneous localization and tracking in wireless ad-hoc sensor networks

    E-Print Network [OSTI]

    Taylor, Christopher J. (Christopher Jorgen)

    2005-01-01

    In this thesis we present LaSLAT, a sensor network algorithm that uses range measurements between sensors and a moving target to simultaneously localize the sensors, calibrate sensing hardware, and recover the target's ...

  11. Automatic Hypermedia Generation for Ad-hoc Queries on Semi-structured Data

    E-Print Network [OSTI]

    Houben, Geert-Jan

    attributes or to show extra ones. The user also enters object selection criteria. We could use a language process. We address important aspects of the software that facilitates the genera- tion process. KEYWORDS for the desired information. Our target applications are collections or libraries of digital (semi

  12. Maximizing the Number of Broadcast Operations in Random Geometric Ad-Hoc Wireless Networks

    E-Print Network [OSTI]

    Calamoneri, Tiziana

    of a node depends, in turn, on the energy power supplied to the node. In particular, the power Pv required by a node v to correctly transmit data to another station w must satisfy the inequality (see [24]): Pv dist, in some network models (like sensor networks), the adopted technology allows to have only few possible

  13. Maximizing the Number of Broadcast Operations in Static Random Geometric Ad-Hoc Networks

    E-Print Network [OSTI]

    Calamoneri, Tiziana

    -Verlag Berlin Heidelberg 2007 #12;248 T. Calamoneri et al. supplied to the node. In particular, the power Pv]) Pv dist(v, w)2 (1) where dist(v, w) is the Euclidean distance between v and w while is a constant, in some network models (like sensor networks), the adopted technology allows to have only few possible

  14. Minimum-energy broadcast in random-grid ad-hoc networks: approximation and distributed algorithms

    E-Print Network [OSTI]

    Calamoneri, Tiziana

    of a node de- pends, in turn, on the energy power supplied to the node. In particular, the power Pv required by a node v to cor- rectly transmit data to another station w must satisfy the inequality Pv dist(v, w)2: the adopted tech- nology allows nodes to have only few possible transmission range values. For this reason, we

  15. A Failure Self-recovery Strategy with Balanced Energy Consumption for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Qiu, Tie; Xia, Feng; Wu, Guowei; Zhou, Yu

    2012-01-01

    In energy constrained wireless sensor networks, it is significant to make full use of the limited energy and maximize the network lifetime even when facing some unexpected situation. In this paper, all sensor nodes are grouped into clusters, and for each cluster, it has a mobile cluster head to manage the whole cluster. We consider an emergent situation that one of the mobile cluster heads is broken down, and hence the whole cluster is consequently out of work. An efficient approach is proposed for recovering the failure cluster by selecting multiple static sensor nodes as the cluster heads to collect packets and transmit them to the sink node. Improved simulated annealing algorithm is utilized to achieve the uniform deployment of the cluster heads. The new cluster heads are dynamically changed in order to keep balanced energy consumption. Among the new cluster heads, packets are transmitted through multi-hop forwarding path which is cost-lowest path found by Dijkstra's algorithm. A balanced energy consumptio...

  16. Neighbour -Aware, Collision Avoidance MAC Protocol (NCMac) for Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    . The IEEE 802.11 specifies the Binary Exponential Backoff (BEB) algorithm, where the duration of a backoff

  17. Security of Future eEnabled Aircraft Ad hoc Networks Krishna Sampigethaya

    E-Print Network [OSTI]

    Poovendran, Radha

    with some open problems. I. Introduction Aviation is today faced with major challenges due effort called NextGen between the Federal Aviation Administration (FAA) and other federal agencies operation, maintenance and control. For example, the Global Positioning System (GPS) and Automated Dependent

  18. Cross-layer design of wideband CDMA systems and cooperative diversity for wireless ad hoc networks :

    E-Print Network [OSTI]

    Annavajjala, Ramesh

    2006-01-01

    protocol: Power allocation as a function of rate Rate=1/4optimal power allocation is plotted as a function of ? inour objective functions. Optimum Bandwidth Allocation If we

  19. A MULTIMEDIA CONFERENCING ON A MOBILE AD-HOC NETWORK OVER VEHICLES

    E-Print Network [OSTI]

    Jang, Ju-Wook

    -dong, Hwaseong-si, Gyeonggi-do, Korea 445-706° Next Generation Vehicle Technology(NGV), Shinlim-dong, Kwanak

  20. On Physical Carrier Sensing in Wireless Ad Hoc Xue Yang and Njtin Vaidya

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    attenuation and shadowing by obstacles. Second, wireless stations communicate over the air and there is significant interference among stations that are spatially close to each other. Whether two wireless stations power used by the transmitter, etc. Additionally, the quality of the communication link depends

  1. RealTime SpatioTemporal Query Processing in Mobile AdHoc Sensor Networks

    E-Print Network [OSTI]

    that has multiple sensors (e.g., mo­ tion sensors, acoustic sensors, infrared light emitting diodes,

  2. Real-Time Spatio-Temporal Query Processing in Mobile Ad-Hoc Sensor Networks

    E-Print Network [OSTI]

    that has multiple sensors (e.g., mo- tion sensors, acoustic sensors, infrared light emitting diodes, and pa

  3. Analyzing Connectivity-Based Multi-Hop Ad-hoc Positioning Regina Bischoff Roger Wattenhofer

    E-Print Network [OSTI]

    scenarios where the nodes do not receive anchors directly (multi-hop) and where no phys- ical distance positioning system (GPS) has spawned a multi-billion dollar market for positioning with an enormous variety questions of cost and even accessi- bility dominate the design. To our knowledge, all previous positioning

  4. Community-based Bus System as Routing Backbone for Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Chu, Xiaowen

    information [2] and tourist points of interest [3]. The work in the second category is to deliver messages collection and information sharing [4]. The work in the third category is to disseminate messages, e, Yiu-Wing Leung, Xiaowen Chu and Beihong Jin State Key Laboratory of Computer Science, Institute

  5. A General Design towards Secure Ad-hoc Collaboration Masayuki Nakae

    E-Print Network [OSTI]

    Sandhu, Ravi

    assgned to a collaboratve team (.e., a vrtual organzaton), our TUCON- based polcy scheme allows fne-graned

  6. DYNAMMA: A DYNAmic Multi-channel Medium Access Framework for Wireless Ad HocNetworks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2007-01-01

    Estrin. An energy-efficient MAC protocol for wireless sensoradaptive energy- efficient MAC protocol for wireless sensorEnergy-efficient collision-free medium access control for wireless

  7. Efficient Broadcast in Wireless Ad Hoc and Sensor Networks with a Realistic Physical Layer

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

    T. H. Meng. Minimum energy mobile wireless networks. IEEE J.minimum-energy multicast tree construction in wireless adenergy-efficient broadcast and multicast trees in wireless

  8. Applying Light Natural Language Processing to Ad-Hoc Cross Language Information Retrieval

    E-Print Network [OSTI]

    Lioma, C.

    Lioma,C. Macdonald,C. Plachouras,V. He,B. Ounis,I. In Accessing Multilingual Information Repositories: 6th Cross-Language Evaluation Forum, CLEF 2005, Vienna, Austria, Revised Selected Papers. Lecture Notes in Computer Science, Vol. 4022 LNCS, Springer

  9. Proceedings of the AD HOC Workshop on Ceramics for Li/FeS{sub 2} batteries

    SciTech Connect (OSTI)

    Not Available

    1993-12-31

    Representatives from industry, the U.S. Advanced Battery Consortium (USABC), DOE, national laboratories, and other govt agencies met to develop recommendations and actions for accelerating the development of ceramic components critical to the successful introduction of the Li/FeS{sub 2} bipolar battery for electric vehicles. Most of the workshop is devoted to electrode materials, bipolar designs, separators, and bipolar plates. The bulk of this document is viewographs and is divided into: ceramics, USABC overview, SAFT`s Li/FeS{sub 2} USABC program, bipolar Li/FeS{sub 2} component development, design requirements for bipolar plates, separator design requirements, compatibility of ceramic insulators with lithium, characterization of MgO for use in separators, resistivity measurements of separators, sintered AlN separators for LiMS batteries, etc.

  10. AUTONOMOUS UNDERSEA SYSTEMS NETWORK (AUSNET) PROTOCOLS TO SUPPORT AD-HOC AUV COMMUNICATIONS

    E-Print Network [OSTI]

    (as opposed to network support) data transmissions. Next steps in this effort will focus on store to support a dynamically evolving topology of truly semi-autonomous networked robots. Emerging flexible low bandwidth, energy efficient architectures and protocols will enable more effective networked subsurface

  11. Geodesic packet routing over self-organizing mobile ad-hoc

    E-Print Network [OSTI]

    Julien, Christine

    -011 Thayne R. Coffman Christine Julien © Copyright 2006 The University of Texas at Austin #12;IEEE SECON `07 Thayne R. Coffman and Christine Julien, Member, IEEE Abstract--The development of routing protocols of some basic simulations that measure its ability to perform efficient geodesic packet forwarding over

  12. Ad Hoc & Sensor Wireless Networks, Vol. 3, pp. 5575 Reprints available directly from the publisher

    E-Print Network [OSTI]

    Liang, Weifa

    Photocopying permitted by license only c 2007 Old City Publishing, Inc. Published by license under the OCP Science imprint, a member of the Old City Publishing Group Energy-Efficient Aggregate Query Evaluation. In Final Form: February 28, 2006. Wireless sensor networks, consisting of sensors equipped with energy

  13. Cluster-Based Failure Detection Service for Large-Scale Ad Hoc Wireless Network Applications

    E-Print Network [OSTI]

    Sanders, William H.

    Introduction Recent advances in MEMS (micro-electro-mechanical systems) and wireless networking technologies

  14. Securing Network Services for Wireless Ad Hoc and Sensor Networks Loukas Lazos

    E-Print Network [OSTI]

    Lazos, Loukas

    RLoc that is well suited in resource-constrained environments such as Wireless Sensor Networks (WSN). Furthermore we on the quantification of the performance of WSN. We address the problem of coverage in stochastically deployed WSN and Geometric Probability we provide analytical formulas for heterogeneous WSN, where sensors do not have

  15. REAct: Resource-Efficient Accountability for Node Misbehavior in Ad Hoc Networks based on Random Audits

    E-Print Network [OSTI]

    Lazos, Loukas

    Audits William Kozma Jr. University of Arizona Electrical and Computer Engineering Dept. Tucson, Arizona 85721 wkozma@ece.arizona.edu Loukas Lazos University of Arizona Electrical and Computer Engineering Dept performance (mali- ciousness). In this paper, we investigate the problem of uniquely iden- tifying the set

  16. Ad-hoc wireless network coverage with networked robots that cannot localize

    E-Print Network [OSTI]

    Correll, Nikolaus

    We study a fully distributed, reactive algorithm for deployment and maintenance of a mobile communication backbone that provides an area around a network gateway with wireless network access for higher-level agents. Possible ...

  17. Ad hoc wireless networks with femto-cell deployment: a study 

    E-Print Network [OSTI]

    Bharucha, Zubin Rustam

    2010-01-01

    Nowadays, with a worldwide market penetration of over 50% in the mobile telecommunications sector, there is also an unrelenting demand from the subscribers for ever increasing transmission rates and availability of ...

  18. Master thesis Implementation of an ad-hoc routing module for

    E-Print Network [OSTI]

    Router framework and the design of a wireless test bed based upon this implementation. The code. The router can be executed in user level or kernel level as well as in the network simulator ns. Performance analysis of the OLSR implementation in Click showed that the single threaded router environment of Click

  19. EFFECT OF MOBILITY ON PERFORMANCE OF WIRELESS AD-HOC NETWORK PROTOCOLS.

    SciTech Connect (OSTI)

    Barrett, C. L. (Christopher L.); Drozda, M. (Martin); Marathe, M. V. (Madhav V.); Marathe, A. (Achla)

    2001-01-01

    We empirically study the effect of mobility on the performance of protocols designed for wireless adhoc networks. An important ohjective is to study the interaction of the Routing and MAC layer protocols under different mobility parameters. We use three basic mobility models: grid mobility model, random waypoint model, and exponential correlated random model. The performance of protocols was measured in terms of (i) latency, (ii) throughput, (iii) number of packels received, (iv) long term fairness and (v) number of control packets at the MAC layer level. Three different commonly studied routing protocols were used: AODV, DSR and LAR1. Similarly three well known MAC protocols were used: MACA, 802.1 1 and CSMA. The inair1 conclusion of our study include the following: 1. 'I'he performance of the: network varies widely with varying mobility models, packet injection rates and speeds; and can ba in fact characterized as fair to poor depending on the specific situation. Nevertheless, in general, it appears that the combination of AODV and 802.1 I is far better than other combination of routing and MAC protocols. 2. MAC layer protocols interact with routing layer protocols. This concept which is formalized using statistics implies that in general it is not meaningful to speak about a MAC or a routing protocol in isolation. Such an interaction leads to trade-offs between the amount of control packets generated by each layer. More interestingly, the results wise the possibility of improving the performance of a particular MAC layer protocol by using a cleverly designed routing protocol or vice-versa. 3. Routing prolocols with distributed knowledge about routes are more suitable for networks with mobility. This is seen by comparing the performance of AODV with DSR or LAR scheme 1. In DSli and IAR scheme 1, information about a computed path is being stored in the route query control packct. 4. MAC layer protocols have varying performance with varying mobility models. It is not only speed that influences the performance but also node degree and connectivity of the dynamic network that affects the protocol performance. 'The main implication of OUI' work is that performance analysis of protocols at a given level in the protocol stack need to be studied not locally in isolation but as a part of the complete protocol stack. The results suggest that in order to improve the pcrlormance of a communication network, it will be important to study the entire protocol stack as a single algorithmic construct; optimizing individual layers in the 7 layer OS1 stilck will not yield performance improvements beyond a point. A methodological contribution of this paper is the use of statistical methods such as design of experinierits arzd aiialysis qf variance methods to characterize the interaction between the protocols, mobility patterns and speed. This allows us to mako much more informed conclusions about the performance of thc protocols than would have been possible by merely running these experiments and observing the data. These ideas are of independtmt interest and are applicable in other contexts wherein one experimentally analyzes algorithms.

  20. Minimum-Energy Topology Control Algorithms in Ad Hoc Joseph Y. Halpern Li (Erran) Li

    E-Print Network [OSTI]

    Halpern, Joseph Y.

    for an extended period of time. In order to accomplish this without a renewable energy source, energy conservation, network lifetime can be increased by energy reduction in the hardware, the software (operating systems consumption. For example, CPU energy consumption can be reduced through dy- namic voltage scaling

  1. Investigation of Media Access Control Protocols for Mobile Ad-hoc Networks

    E-Print Network [OSTI]

    , the protocol guarantees bounded delay for emergency tra c. #12;4 1 EXECUTIVE SUMMARY This report contains.D. Final Report Submitted to: National Institute of Standards and Technology Gaithersburg, MD 20899-0001 Request no. Q-912364 Purchase request no. 892-9326 #12;2 Contents 1 EXECUTIVE SUMMARY 4 2 Introduction 6 3

  2. A Unifying Perspective on The Capacity of Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

    We introduce (n, m, k)-casting as a generalization of allWe define (n, m, k)-casting as a generalization of all formsIn the context of (n, m, k)-casting, n, m, and k denote the

  3. Report of the Provost's Ad Hoc Committee on Faculty in Interdisciplinary Programs

    E-Print Network [OSTI]

    Emshwiller, Eve

    development (e.g., administrative staff, course buyouts for lead faculty). 2. Allocation of Credit to Academic

  4. Best effort QoS support routing in mobile ad hoc networks 

    E-Print Network [OSTI]

    Luo, Heng

    2012-06-25

    In the past decades, mobile traffic generated by devices such as smartphones, iphones, laptops and mobile gateways has been growing rapidly. While traditional direct connection techniques evolve to provide better access ...

  5. Mobility changes anonymity: new passive threats in mobile ad hoc networks

    E-Print Network [OSTI]

    Hong, Xiaoyan; Kong, Jiejun; Gerla, Mario

    2006-01-01

    delay on most portable mobile devices. D. Anonymity study inmobile nodes and prepare the counterattacks. The needed eavesdropping devices,

  6. Robust Position-Based Routing in Wireless Ad Hoc Networks with Unstable Transmission Ranges

    E-Print Network [OSTI]

    Chaudhuri, Soma

    Barri~re Departament de Matem&tica Aplicada i Telem&tica Univ. Polit~.cnicade Catalunya Barcelona, Spain

  7. 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...

  8. Abstract --Developing software for mobile or ad hoc scenarios is very cost intensive. Different software and

    E-Print Network [OSTI]

    Steimann, Friedrich

    communication infrastructure is modified or exchanged, applications should not be developed 'from scratch.g., is not compatible with Standard Java, thus we cannot use programs across platforms without re-implementing major manufacturers: even if devices in principle are able to accommodate high-level com- munication platforms

  9. MODULO AND GRID BASED CHANNEL SELECTION IN AD HOC Gareth Owen Mo Adda

    E-Print Network [OSTI]

    Kent, University of

    based. Antenna techniques attempt to reduce the interference or mitigate it by for example, directional, University of Portsmouth Buckingham Building, Lion Terrace, Portsmouth England, PO1 3HE {gareth.owen, mo.adda}@port.ac channels. We analyse many techniques requiring only information available locally and those that do

  10. Social Welfare Based Routing in Ad hoc Networks Mingming Lu and Jie Wu

    E-Print Network [OSTI]

    Wu, Jie

    is to save energy. Existing energy-efficient routing protocols save energy by selecting the lowest energy cost route. However, energy saving is not equal to energy efficiency. Consider a large number, and hence most packets transmitted through this path are lost, it is energy waste rather than energy saving

  11. The Limits of Theory: Pragmatic Challenges in Mobile Ad Hoc Systems

    E-Print Network [OSTI]

    Lenders, Vincent

    , Martin May ETH Zurich 8092 Zurich, Switzerland legendre,maym@tik.ee.ethz.ch Vincent Lenders Armasuisse 3000 Berne, Switzerland lenders@tik.ee.ethz.ch Gunnar Karlsson KTH, Royal Inst. of Technology 10044

  12. Multi-path Routing Protocols in Wireless Mobile Ad Hoc Networks: A Quantitative

    E-Print Network [OSTI]

    Lenders, Vincent

    Parissidis, Vincent Lenders, Martin May, and Bernhard Plattner Swiss Federal Institute of Technology Communications Systems Group Gloriastrasse 35, 8092 Zurich, Switzerland {parissid, lenders, may, plattner

  13. Beyond Human Capital Development: Balanced Safeguards Workforce Metrics and the Next Generation Safeguards Workforce

    SciTech Connect (OSTI)

    Burbank, Roberta L.; Frazar, Sarah L.; Gitau, Ernest TN; Shergur, Jason M.; Scholz, Melissa A.; Undem, Halvor A.

    2014-03-28

    Since its establishment in 2008, the Next Generation Safeguards Initiative (NGSI) has achieved a number of objectives under its five pillars: concepts and approaches, policy development and outreach, international nuclear safeguards engagement, technology development, and human capital development (HCD). As a result of these efforts, safeguards has become much more visible as a critical U.S. national security interest across the U.S. Department of Energy (DOE) complex. However, limited budgets have since created challenges in a number of areas. Arguably, one of the more serious challenges involves NGSI’s ability to integrate entry-level staff into safeguards projects. Laissez fair management of this issue across the complex can lead to wasteful project implementation and endanger NGSI’s long-term sustainability. The authors provide a quantitative analysis of this problem, focusing on the demographics of the current safeguards workforce and compounding pressures to operate cost-effectively, transfer knowledge to the next generation of safeguards professionals, and sustain NGSI safeguards investments.

  14. AdS spacetimes and isometric embeddings

    E-Print Network [OSTI]

    Steven Willison

    2013-02-07

    An algebraic global isometric embedding of the nonrotating BTZ black hole is presented. The ambient spacetime is $\\mathbb{M}^{2,3}$, the 3+2 dimensional flat spacetime. We also present the analogous embedding for the Euclidean BTZ spacetime and by performing a kind of double analytic continuation construct a 1-parameter family of embeddings of cosmological AdS spacetime into $\\mathbb{M}^{2,3}$ which coincide asymptotically with the embedded BTZ manifold of the appropriate mass. Finally we note that the family of embeddings of cosmological AdS$_{n}$ into $\\mathbb{M}^{2,n}$ generalises to higher dimensions.

  15. Systematics of Coupling Flows in AdS Backgrounds

    E-Print Network [OSTI]

    Goldberger, Walter D.

    2009-01-01

    can be calculated using the AdS/CFT correspondence bySystematics of Coupling Flows in AdS Backgrounds Walter D.Systematics of Coupling Flows in AdS Backgrounds Walter D.

  16. Instability corners in AdS space

    E-Print Network [OSTI]

    Fotios V. Dimitrakopoulos; Ben Freivogel; Matthew Lippert; I-Sheng Yang

    2014-10-07

    We investigate whether arbitrarily small perturbations in global AdS space are generically unstable and collapse into black holes on the time scale set by gravitational interactions. We argue that current evidence, combined with our analysis, strongly suggests that a set of nonzero measure in the space of initial conditions does not collapse on this time scale. On the other hand, existing results do not provide an equally strong indication whether the unstable solutions also form a set of nonzero measure. We perform an analysis in position space to address this puzzle, and our formalism allows us to directly address the vanishing-amplitude limit. We show that gravitational self-interaction leads to tidal deformations which are equally likely to focus or defocus energy, and we sketch the phase diagram accordingly. We also clarify the connection between gravitational evolution in global AdS and holographic thermalization.

  17. Refined Holographic Entanglement Entropy for the AdS Solitons and AdS black Holes

    E-Print Network [OSTI]

    Masafumi Ishihara; Feng-Li Lin; Bo Ning

    2013-04-04

    We consider the refinement of the holographic entanglement entropy for the holographic dual theories to the AdS solitons and AdS black holes, including the corrected ones by the Gauss-Bonnet term. The refinement is obtained by extracting the UV-independent piece of the holographic entanglement entropy, the so-called renormalized entanglement entropy which is independent of the choices of UV cutoff. Our main results are (i) the renormalized entanglement entropies of the AdS$_{d+1}$ soliton for $d=4,5$ are neither monotonically decreasing along the RG flow nor positive definite, especially around the deconfinement/confinement phase transition; (ii) there is no topological entanglement entropy for AdS$_5$ soliton even with Gauss-Bonnet correction; (iii) for the AdS black holes, the renormalized entanglement entropy obeys an expected volume law at IR regime, and the transition between UV and IR regimes is a smooth crossover even with Gauss-Bonnet correction; (iv) based on AdS/MERA conjecture, we postulate that the IR fixed-point state for the non-extremal AdS soliton is a trivial product state.

  18. Workforce Development: A Survey of Industry Needs and Training Approaches

    SciTech Connect (OSTI)

    Ventre, Jerry; Weissman, Jane

    2009-04-01

    This paper presents information and data collected during 2008 on PV workforce needs by the Interstate Renewable Energy Council for the U.S. Department of Energy. The data was collected from licensed contractors, PV practitioners, educators and expert instructors at training sessions, and at focus group and advisory committee meetings. Respondents were primarily from three states: Florida, New York and California. Other states were represented, but to a lesser extent. For data collection, a 12-item questionnaire was developed that addressed key workforce development issues from the perspectives of both the PV industry and training institutions. A total of 63 responses were collected, although not every respondent answered every question. Industry representatives slightly outnumbered the educators, although the difference in responses was not significant.

  19. The radiation oncology workforce: A focus on medical dosimetry

    SciTech Connect (OSTI)

    Robinson, Gregg F.; Mobile, Katherine; Yu, Yan

    2014-07-01

    The 2012 Radiation Oncology Workforce survey was conducted to assess the current state of the entire workforce, predict its future needs and concerns, and evaluate quality improvement and safety within the field. This article describes the dosimetrist segment results. The American Society for Radiation Oncology (ASTRO) Workforce Subcommittee, in conjunction with other specialty societies, conducted an online survey targeting all segments of the radiation oncology treatment team. The data from the dosimetrist respondents are presented in this article. Of the 2573 dosimetrists who were surveyed, 890 responded, which resulted in a 35% segment response rate. Most respondents were women (67%), whereas only a third were men (33%). More than half of the medical dosimetrists were older than 45 years (69.2%), whereas the 45 to 54 years age group represented the highest percentage of respondents (37%). Most medical dosimetrists stated that their workload was appropriate (52%), with respondents working a reported average of 41.7 ± 4 hours per week. Overall, 86% of medical dosimetrists indicated that they were satisfied with their career, and 69% were satisfied in their current position. Overall, 61% of respondents felt that there was an oversupply of medical dosimetrists in the field, 14% reported that supply and demand was balanced, and the remaining 25% felt that there was an undersupply. The medical dosimetrists' greatest concerns included documentation/paperwork (78%), uninsured patients (80%), and insufficient reimbursement rates (87%). This survey provided an insight into the dosimetrist perspective of the radiation oncology workforce. Though an overwhelming majority has conveyed satisfaction concerning their career, the study allowed a spotlight to be placed on the profession's current concerns, such as insufficient reimbursement rates and possible oversupply of dosimetrists within the field.

  20. EuroSPI 2009 -1 Software provides an increasing part of the added value of modern automation systems and

    E-Print Network [OSTI]

    SPI 2009 1 Introduction Software-intensive automation systems, like industrial manufacturing plants, need automation systems and thus becomes more complex. System requirements may change even late in the development process, lead to ad-hoc modifications of the product and require systematic (and automated) testing

  1. Energy Efficiency Services Sector: Workforce Education and Training Needs

    SciTech Connect (OSTI)

    Goldman, Charles A.; Peters, Jane S.; Albers, Nathaniel; Stuart, Elizabeth; Fuller, Merrian C.

    2010-03-19

    This report provides a baseline assessment of the current state of energy efficiency-related education and training programs and analyzes training and education needs to support expected growth in the energy efficiency services workforce. In the last year, there has been a significant increase in funding for 'green job' training and workforce development (including energy efficiency), through the American Recovery and Reinvestment Act (ARRA). Key segments of the energy efficiency services sector (EESS) have experienced significant growth during the past several years, and this growth is projected to continue and accelerate over the next decade. In a companion study (Goldman et al. 2009), our research team estimated that the EESS will increase two- to four-fold by 2020, to 220,000 person-years of employment (PYE) (low-growth scenario) or up to 380,000 PYE (high-growth scenario), which may represent as many as 1.3 million individuals. In assessing energy efficiency workforce education and training needs, we focus on energy-efficiency services-related jobs that are required to improve the efficiency of residential and nonresidential buildings. Figure ES-1 shows the market value chain for the EESS, sub-sectors included in this study, as well as the types of market players and specific occupations. Our assessment does not include the manufacturing, wholesale, and retail distribution subsectors, or energy efficiency-focused operations and maintenance performed by facility managers.

  2. Growing a Wind Workforce: The National Wind Energy Skills Assessment Report (Poster)

    SciTech Connect (OSTI)

    Tegen, S.

    2014-05-01

    This poster summarizes results from the first published investigation into the detailed makeup of the wind energy workforce as well as a glance at the educational infrastructure and training needs of the wind industry. Insights from this research into the domestic wind workforce allow the private sector, educational institutions, and federal and state governments to make better informed workforce-related decisions based on the current data and future projections.

  3. Black hole microstates in AdS

    E-Print Network [OSTI]

    Shaghoulian, Edgar

    2015-01-01

    We extend a recently derived higher-dimensional Cardy formula to include angular momenta, which we use to obtain the Bekensten-Hawking entropy of AdS black branes, compactified rotating branes, and large Schwarzschild/Kerr black holes. This is the natural generalization of Strominger's microscopic derivation of the BTZ black hole entropy to higher dimensions. We propose an extension to include $U(1)$ charge, which agrees with the Bekenstein-Hawking entropy of large Reissner-Nordstrom/Kerr-Newman black holes at high temperature. We extend the results to arbitrary hyperscaling violation exponent (this captures the case of black D$p$-branes as a subclass) and reproduce logarithmic corrections.

  4. The indirect architect : linking design services and mass-production to improve workforce housing

    E-Print Network [OSTI]

    Clouse, Carey Rose

    2007-01-01

    Architects have grappled with their role in the development of prefabricated building technologies and workforce housing for the last century. Historically, the architectural profession has witnessed limited participation ...

  5. Semiclassical strings in AdS(3) X S^2

    E-Print Network [OSTI]

    Bogeun Gwak; Bum-Hoon Lee; Kamal L. Panigrahi; Chanyong Park

    2009-01-30

    In this paper, we investigate the semiclassical strings in AdS(3)XS^2, in which the string configuration of AdS(3) is classified to three cases depending on the parameters. Each of these has a different anomalous dimension proportional to logS, S^(1/3) and S, where S is a angular momentum on AdS(3). Further we generalize the dispersion relations for various string configuration on AdS(3)XS^2.

  6. Energy Efficiency Services Sector: Workforce Size and Expectations for Growth

    SciTech Connect (OSTI)

    Goldman, Charles; Fuller, Merrian C.; Stuart, Elizabeth; Peters, Jane S.; McRae, Marjorie; Albers, Nathaniel; Lutzenhiser, Susan; Spahic, Mersiha

    2010-03-22

    The energy efficiency services sector (EESS) is poised to become an increasingly important part of the U.S. economy. Climate change and energy supply concerns, volatile and increasing energy prices, and a desire for greater energy independence have led many state and national leaders to support an increasingly prominent role for energy efficiency in U.S. energy policy. The national economic recession has also helped to boost the visibility of energy efficiency, as part of a strategy to support economic recovery. We expect investment in energy efficiency to increase dramatically both in the near-term and through 2020 and beyond. This increase will come both from public support, such as the American Recovery and Reinvestment Act (ARRA) and significant increases in utility ratepayer funds directed toward efficiency, and also from increased private spending due to codes and standards, increasing energy prices, and voluntary standards for industry. Given the growing attention on energy efficiency, there is a concern among policy makers, program administrators, and others that there is an insufficiently trained workforce in place to meet the energy efficiency goals being put in place by local, state, and federal policy. To understand the likelihood of a potential workforce gap and appropriate response strategies, one needs to understand the size, composition, and potential for growth of the EESS. We use a bottom-up approach based upon almost 300 interviews with program administrators, education and training providers, and a variety of EESS employers and trade associations; communications with over 50 sector experts; as well as an extensive literature review. We attempt to provide insight into key aspects of the EESS by describing the current job composition, the current workforce size, our projections for sector growth through 2020, and key issues that may limit this growth.

  7. Opening Doors of Opportunity to Develop the Future Nuclear Workforce - 13325

    SciTech Connect (OSTI)

    Mets, Mindy

    2013-07-01

    The United States' long-term demand for highly skilled nuclear industry workers is well-documented by the Nuclear Energy Institute. In addition, a study commissioned by the SRS Community Reuse Organization concludes that 10,000 new nuclear workers are needed in the two-state region of Georgia and South Carolina alone. Young adults interested in preparing for these nuclear careers must develop specialized skills and knowledge, including a clear understanding of the nuclear workforce culture. Successful students are able to enter well-paying career fields. However, the national focus on nuclear career opportunities and associated training and education programs has been minimal in recent decades. Developing the future nuclear workforce is a challenge, particularly in the midst of competition for similar workers from various industries. In response to regional nuclear workforce development needs, the SRS Community Reuse Organization established the Nuclear Workforce Initiative (NWI{sup R}) to promote and expand nuclear workforce development capabilities by facilitating integrated partnerships. NWI{sup R} achievements include a unique program concept called NWI{sup R} Academies developed to link students with nuclear career options through firsthand experiences. The academies are developed and conducted at Aiken Technical College and Augusta Technical College with support from workforce development organizations and nuclear employers. Programs successfully engage citizens in nuclear workforce development and can be adapted to other communities focused on building the future nuclear workforce. (authors)

  8. A Workforce "Crisis" in Environmental Health Public health professionals know that improvements in environmental

    E-Print Network [OSTI]

    A Workforce "Crisis" in Environmental Health 7/19/2007 Public health professionals know that improvements in environmental health have been even more important in increasing Americans' lifespan over strive to keep our air, food and water clean. Today's environmental health workforce crisis has

  9. Workforce Training for the Electric Power Sector: Awards | Department of

    Broader source: Energy.gov (indexed) [DOE]

    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 GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities.EnergyKirstinMetals PlantEnergy List of Workforce

  10. Workforce Training for the Electric Power Sector: Map of Projects |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'S FUTURE.Energy Wind PowerReginaDepartment of Energy Workforce

  11. Fermilab Today - Classified Ad Policy

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

    Fermilab Classified Ad Policy Fermilab Today now requires that people placing classified ads must belong to one of these categories: a. active and retired employees of Fermi...

  12. 2014 Annual Workforce Analysis and Staffing Plan Report- Office of Environmental Management

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  13. 2013 Annual Workforce Analysis and Staffing Plan Report- Idaho Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  14. 2014 Annual Workforce Analysis and Staffing Plan Report- Savannah River Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  15. 2014 Annual Workforce Analysis and Staffing Plan Report- Office of River Protection

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  16. 2013 Annual Workforce Analysis and Staffing Plan Report- Chief of Nuclear Safety

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  17. 2014 Annual Workforce Analysis and Staffing Plan Report- Chief of Nuclear Safety

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  18. 2014 Annual Workforce Analysis and Staffing Plan Report- Office of Science

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  19. 2013 Annual Workforce Analysis and Staffing Plan Report- Office of Science

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  20. 2012 Annual Workforce Analysis and Staffing Plan Report- Office of Science

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  1. 2011 Annual Workforce Analysis and Staffing Plan Report- Office of Science

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  2. 2013 Annual Workforce Analysis and Staffing Plan Report- Office of Science Chicago Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  3. 2010 Annual Workforce Analysis and Staffing Plan Report- Office of Science

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  4. 2013 Annual Workforce Analysis and Staffing Plan Report- Nuclear Energy Oak Ridge Site Office

    Broader source: Energy.gov [DOE]

    anagers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  5. 2013 Annual Workforce Analysis and Staffing Plan Report- Oak Ridge Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  6. 2012 Annual Workforce Analysis and Staffing Plan Report- Oak Ridge Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  7. 2010 Annual Workforce Analysis and Staffing Plan Report- Y-12 Site Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  8. 2014 Annual Workforce Analysis and Staffing Plan Report- Office of Environment, Health, Safety and Security

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  9. Identification of Strategies to Leverage Public and Private Resources for National Security Workforce Development

    SciTech Connect (OSTI)

    2009-02-01

    This report documents the identification of strategies to leverage public and private resources for the development of an adequate national security workforce as part of the National Security Preparedness Project (NSPP).There are numerous efforts across the United States to develop a properly skilled and trained national security workforce. Some of these efforts are the result of the leveraging of public and private dollars. As budget dollars decrease and the demand for a properly skilled and trained national security workforce increases, it will become even more important to leverage every education and training dollar. The leveraging of dollars serves many purposes. These include increasing the amount of training that can be delivered and therefore increasing the number of people reached, increasing the number and quality of public/private partnerships, and increasing the number of businesses that are involved in the training of their future workforce.

  10. 2011 Annual Workforce Analysis and Staffing Plan Report- Chief of Nuclear Safety

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  11. 2014 Annual Workforce Analysis and Staffing Plan Report- Idaho Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  12. 2012 Annual Workforce Analysis and Staffing Plan Report- Los Alamos Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  13. 2014 Annual Workforce Analysis and Staffing Plan Report- Los Alamos Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  14. 2011 Annual Workforce Analysis and Staffing Plan Report- Los Alamos Site Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  15. 2013 Annual Workforce Analysis and Staffing Plan Report- Los Alamos Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  16. 2014 Annual Workforce Analysis and Staffing Plan Report- Savannah River Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  17. 2013 Annual Workforce Analysis and Staffing Plan Report- Pacific Northwest Site Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  18. 2011 Annual Workforce Analysis and Staffing Plan Report- Savannah River Site Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  19. 2011 Annual Workforce Analysis and Staffing Plan Report- Idaho Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  20. 2012 Annual Workforce Analysis and Staffing Plan Report- Idaho Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  1. 2012 Annual Workforce Analysis and Staffing Plan Report- West Valley Demonstration Project

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  2. 2012 Annual Workforce Analysis and Staffing Plan Report- NNSA Production Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  3. 2014 Annual Workforce Analysis and Staffing Plan Report- NNSA Production Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  4. 2012 Annual Workforce Analysis and Staffing Plan Report- Savannah River Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  5. 2014 Annual Workforce Analysis and Staffing Plan Report- Pacific Northwest Site Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  6. Webcast of the Renewable Energy Competency Model: An Aid to Build a Renewable Energy Skilled Workforce

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Department of Energy held a webcast titled "Renewable Energy Competency Model: An Aid to Build a Renewable Energy Skilled Workforce" on Monday, October 22, 2012. The Renewable Energy Competency...

  7. 2010 Annual Workforce Analysis and Staffing Plan Report- Office of River Protection

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  8. 2013 Annual Workforce Analysis and Staffing Plan Report- Office of Health, Safety and Security

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  9. 2012 Annual Workforce Analysis and Staffing Plan Report- Nuclear Energy Oak Ridge Site Office

    Office of Energy Efficiency and Renewable Energy (EERE)

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  10. 2013 Annual Workforce Analysis and Staffing Plan Report- Savannah River Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  11. 2013 Annual Workforce Analysis and Staffing Plan Report- Sandia Field Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  12. 2013 Annual Workforce Analysis and Staffing Plan Report- Savannah River Operations Office

    Broader source: Energy.gov [DOE]

    Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities.

  13. Expanding the Industrial Assessment Center Program: Building an Industrial Efficiency Workforce 

    E-Print Network [OSTI]

    Trombley, D.; Elliott, R. N.; Chittum, A.

    2009-01-01

    the Industrial Assessment Center Program: Building an Industrial Efficiency Workforce Daniel Trombley Engineering Associate R. Neal Elliott, Ph.D., P.E. Associate Director of Research American Council for an Energy-Efficient Economy Washington... to technical information and trained workforce. One of the most successful programs for achieving energy efficiency savings in the manufacturing sector is the US Department of Energy (DOE)'s Industrial Assessment Center (IAC) program. In addition...

  14. Logarithmic Operators in AdS_3/CFT_2

    E-Print Network [OSTI]

    Alex Lewis

    1999-11-30

    We discuss the relation between singletons in AdS_3 and logarithmic operators in the CFT on the boundary. In 2 dimensions there can be more logarithmic operators apart from those which correspond to singletons in AdS, because logarithmic operators can occur when the dimensions of primary fields differ by an integer instead of being equal. These operators may be needed to account for the greybody factor for gauge bosons in the bulk.

  15. Central Charge for 2D Gravity on AdS(2) and AdS(2)/CFT(1) Correspondence

    E-Print Network [OSTI]

    Mohsen Alishahiha; Farhad Ardalan

    2008-08-19

    We study 2D Maxwell-dilaton gravity on AdS(2). We distinguish two distinctive cases depending on whether the AdS(2) solution can be lifted to an AdS(3) geometry. In both cases, in order to get a consistent boundary condition we need to work with a twisted energy momentum tensor which has non-zero central charge. With this central charge and the explicit form of the twisted Virasoro generators we compute the entropy of the system using the Cardy formula. The entropy is found to be the same as that obtained from gravity calculations for a specific value of the level of the U(1) current. The agreement is an indication of $AdS(2)/CFT(1) correspondence.

  16. Adding Value to Agricultural Products 

    E-Print Network [OSTI]

    Anderson, David P.; Hanselka, Daniel

    2009-06-01

    You can significantly increase farm income by adding value to agricultural products and marketing those products effectively. This publication explains how to design a value-added product based on consumer preferences and how to build a business...

  17. AdS Field Theory from Conformal Field Theory

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan

    2012-08-01

    We provide necessary and sufficient conditions for a Conformal Field Theory to have a description in terms of a perturbative Effective Field Theory in AdS. The first two conditions are well-known: the existence of a perturbative `1/N' expansion and an approximate Fock space of states generated by a finite number of low-dimension operators. We add a third condition, that the Mellin amplitudes of the CFT correlators must be well-approximated by functions that are bounded by a polynomial at infinity in Mellin space, or in other words, that the Mellin amplitudes have an effective theory-type expansion. We explain the relationship between our conditions and unitarity, and provide an analogy with scattering amplitudes that becomes exact in the flat space limit of AdS. The analysis also yields a simple connection between conformal blocks and AdS diagrams, providing a new calculational tool very much in the spirit of the S-Matrix program. We also begin to explore the potential pathologies associated with higher spin fields in AdS by generalizing Weinberg's soft theorems to AdS/CFT. The AdS analog of Weinberg's argument constrains the interactions of conserved currents in CFTs, but there are potential loopholes that are unavailable to theories of massless higher spin particles in flat spacetime.

  18. Fully Power-Aware and Location-Aware Protocols for Wireless Multi-hop Ad Hoc Networks

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    issue for MANET since most mobile hosts will be oper- ated by battery powers. In this paper, we address for almost all kinds of portable devices supported battery energy is power saving. Without power, any mobile to extend the lifetime of batteries is an important issue, especially for MANET, which consists of mobile

  19. Distributed Multicast Grouping for Publish/Subscribe over Mobile Ad Hoc Networks Eiko Yoneki and Jean Bacon

    E-Print Network [OSTI]

    Cambridge, University of

    and Jean Bacon University of Cambridge Computer Laboratory J J Thomson Avenue, Cambridge CB3 0FD, UK Email: {eiko.yoneki, jean.bacon}@cl.cam.ac.uk Abstract-- Event broker grids that deploy the pub- lish

  20. Spectral-efficiency of multi-antenna links in ad-hoc wireless networks with limited Tx CSI

    E-Print Network [OSTI]

    Govindasamy, Siddhartan

    An asymptotic expression is derived for the mean spectral efficiency of multi-antenna links randomly distributed on a plane in a uniform manner where transmitters (Tx) have Channel-State-Information (CSI) of the channels ...

  1. 60 Int. J. Ad Hoc and Ubiquitous Computing, Vol. 7, No. 1, 2011 A mobility framework to improve heterogeneous

    E-Print Network [OSTI]

    Atkinson, Robert C

    @hainu.edu.cn *Corresponding author Robert Atkinson and James Irvine Department of Electronic and Electrical Engineering, University of Strathclyde, Scotland, G1 1XW, UK E-mail: r.atkinson@eee.strath.ac.uk E-mail: j technologies. Wencai Du is a Professor and the Dean of College of Information Science & Technology, Hainan

  2. A Mobile Ad Hoc Bio-Sensor Network Yihan Li, Shivendra S. Panwar, Shiwen Mao, Srinivas Burugupalli, Jong ha Lee

    E-Print Network [OSTI]

    Panwar, Shivendra S.

    @photon.poly.edu, jlee25@utopia.poly.edu. Abstract-- Recent research shows that animals can be guided remotely, The system architecture and operation is introduced, and major challenges and issues are discussed. Because to sensor networks using robots. In this paper, we will first introduce the system architecture and major

  3. Fundamental Limits of Information Dissemination in Wireless Ad Hoc Networks---Part I: Single-Packet Reception

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2009-01-01

    ==D=P BHAA FG KDBT BTA BFB? C @D=D@A? = >DEB? =QJ? EB T? XA BTA @D=D@BFB? C "A? = >DEB? =JA0QJ? EB BHAA BT? B T? E @D=D@BFB? C ? HA? 0 #TA ? HA?

  4. Quorum-Based Asynchronous Power-Saving Protocols for IEEE 802.11 Ad Hoc Jehn-Ruey Jiang1

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    rescue operations, and outdoor activities. This work is co-sponsored by the MOE Program for Promoting Aca is a critical issue for portable devices supported by batteries. Battery power is a limited re- source prediction: Since a host entering the PS mode will reduce its radio activity, other hosts who intend to send

  5. Broadcasting Based on Dominated Connecting Sets with MPR in a Realistic Environment for WSNs & AD-HOC

    E-Print Network [OSTI]

    Boyer, Edmond

    the redundancy, such as MPR (MultiPoint Relay) or DS-MPR (Connected Dominating Sets with MPR). These methods and existence of obstacles. This paper focuses on DS-MPR. Firstly, we test it in a realistic environment to show Sensor Networks; Broadcasting; Connected Dominating Sets; MultiPoint Relay; Lognormal model. 1

  6. Abstract--This article overviews the information-driven approach to sensor collaboration in ad hoc sensor networks. The

    E-Print Network [OSTI]

    Zhao, Feng

    into energy savings) and mitigate the risk of network node/link failures. The longevity of a network depends on the rate the power is consumed performing computation and communication tasks at these un- tethered, battery powered sensors. Therefore, one of the central issues for Collaborative Signal and Information

  7. A survey on securing user authentication in vehicular ad hoc networks Mrs. Arzoo Dahiya Mr. Vaibhav Sharma

    E-Print Network [OSTI]

    Jagannatham, Aditya K.

    Department Institute of Technology and Management Institute of Technology and Management Sector-23 A, Gurgaon(MANET). On demand set up, fault tolerance and unconstrained connectivity are a couple of advantages that why mobile vehicle to vehicle (V2V) communication and vehicle to road side communication. This paper describes

  8. Impact of Transport Models on Connectivity of Vehicular Ad-hoc Networks HO, Ivan; NORTH, Robin; POLAK, John; LEUNG, Kin

    E-Print Network [OSTI]

    Leung, Kin K.

    . For instance, Festag et al. (Festag et al., 2004) describe the real-world field trials of a car-to-car communication platform with an IEEE 802.11 air interface, while Bucciol et al. (Bucciol et al., 2005) conducted

  9. An Energy-Aware Simulation Model and Transaction Protocol for Dynamic Workload Distribution in Mobile Ad Hoc Networks1

    E-Print Network [OSTI]

    Pedram, Massoud

    An Energy-Aware Simulation Model and Transaction Protocol for Dynamic Workload Distribution an undesirable occurrence. Uneven distribution of energy resources and computational workloads is especially for detailed evaluation of the performance of different energy management policies in a MANET. Next it presents

  10. LA-DCF: A New Multiple Access Protocol for Ad-Hoc Wireless Richard Akester & Stephen Hailes

    E-Print Network [OSTI]

    Haddadi, Hamed

    during backoff, the host "freezes" the backoff timer. Once the carrier is sensed idle again, the backoff-to-end transport protocol, but this can take too long to detect the loss and take action, causing channel variations in delay affects the calculation of round trip times in transport protocols. Also, they are only

  11. Attacking the Asokan-Ginzboorg Protocol for Key Distribution in an Ad-Hoc Bluetooth Network Using CORAL 

    E-Print Network [OSTI]

    Steel, G.; Maidl, M.; Bundy, Alan

    We describe Coral, a counterexample finder for incorrect inductive conjectures. By devising a first-order version of Paulson's formalism for cryptographic protocol analysis, we are able to use Coral to attack protocols ...

  12. Large rotating AdS black holes from fluid mechanics

    E-Print Network [OSTI]

    Sayantani Bhattacharyya; Subhaneil Lahiri; R. Loganayagam; Shiraz Minwalla

    2008-07-25

    We use the AdS/CFT correspondence to argue that large rotating black holes in global AdS(D) spaces are dual to stationary solutions of the relativistic Navier-Stokes equations on S**(D-2). Reading off the equation of state of this fluid from the thermodynamics of non-rotating black holes, we proceed to construct the nonlinear spinning solutions of fluid mechanics that are dual to rotating black holes. In all known examples, the thermodynamics and the local stress tensor of our solutions are in precise agreement with the thermodynamics and boundary stress tensor of the spinning black holes. Our fluid dynamical description applies to large non-extremal black holes as well as a class of large non-supersymmetric extremal black holes, but is never valid for supersymmetric black holes. Our results yield predictions for the thermodynamics of all large black holes in all theories of gravity on AdS spaces, for example, string theory on AdS(5) x S**5 and M theory on AdS(4) x S**7 and AdS(7) x S**4.

  13. This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Secure and Robust Localization In A Wireless Ad

    E-Print Network [OSTI]

    Misra, Satyajayant

    This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. 1 Secure and Robust Localization the problem of accurate localization of static or mobile nodes in a wireless ad hoc network, using

  14. Implementation of Strategies to Leverage Public and Private Resources for National Security Workforce Development

    SciTech Connect (OSTI)

    2009-04-01

    This report documents implementation strategies to leverage public and private resources for the development of an adequate national security workforce as part of the National Security Preparedness Project (NSPP), being performed under a U.S. Department of Energy (DOE)/National Nuclear Security Administration (NNSA) grant. There are numerous efforts across the United States to develop a properly skilled and trained national security workforce. Some of these efforts are the result of the leveraging of public and private dollars. As budget dollars decrease and the demand for a properly skilled and trained national security workforce increases, it will become even more important to leverage every education and training dollar. This report details some of the efforts that have been implemented to leverage public and private resources, as well as implementation strategies to further leverage public and private resources.

  15. Strategies for Overcoming Key Barriers to Development of a National Security Workforce

    SciTech Connect (OSTI)

    2008-06-30

    This report documents the strategies for overcoming identified key barriers to development of an adequate national security workforce as part of the National Security Preparedness Project (NSPP) being performed under a Department of Energy (DOE) National Nuclear Security Administration (NNSA) grant. Many barriers currently exist that prevent the development of an adequate number of properly trained national security personnel. The identified strategies to address the barriers will focus on both short-term and long-term efforts, as well as strategies to capture legacy knowledge of retiring national security workforce personnel.

  16. 3-D Electrical Resistivity Tomography for Cliff Stability Assessment at Pointe du Hoc in Normandy, France 

    E-Print Network [OSTI]

    Udphuay, Suwimon

    2010-01-14

    Pointe du Hoc overlooking the English Channel in Normandy, France was host to one of the most important military engagements of World War II. While the site is a valuable historic cultural resource, it is vulnerable to ...

  17. NOAA Workforce Management Office, Strategic Human Capital Division June 17, 2015 Division Director

    E-Print Network [OSTI]

    NOAA Workforce Management Office, Strategic Human Capital Division ­ June 17, 2015 Division Theresa.Berry@noaa.gov Silver Spring, MD (301) 713-6365 Program Manager for Distance Learning) 713-6379 Program Manager (Leadership Competency Development Program, Presidential Management Fellows

  18. The College of Engineering's Impact on Prosperity Translational Research High Performance Workforce

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    through funded research. In 2007, Comverge, an energy management company, made its Nasdaq trading debut Renewable Energy Laboratory in an effort to make Colorado a renewable energy leader. Research fellowships workforce, and (3) creating new ventures. While this issue focuses on energy, the economic impact

  19. Wind Energy Workforce Development: A Roadmap to a Wind Energy Educational Infrastructure (Presentation)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2011-05-01

    Wind Powering America national technical director Ian Baring-Gould made this presentation about workforce development in the wind energy industry to an audience at the American Wind Energy Association's annual WINDPOWER conference in Anaheim. The presentation outlines job projections from the 20% Wind Energy by 2030 report and steps to take at all levels of educational institutions to meet those projections.

  20. THE CHALLENGES AND OPPORTUNITIES TO MEET THE WORKFORCE DEMAND IN THE ELECTRIC POWER AND ENERGY PROFESSION

    E-Print Network [OSTI]

    1 THE CHALLENGES AND OPPORTUNITIES TO MEET THE WORKFORCE DEMAND IN THE ELECTRIC POWER AND ENERGY to be about 25%. The demand for U.S. electrical engineers in construction will be up from 150,000 today to 175 PROFESSION Wanda Reder, S & C Electric Company, 6601 North Ridge Blvd., Chicago, IL 60626- 3997, USA Vahid

  1. Linear Programming Approach to Optimize Strategic Investment in the Construction Workforce

    E-Print Network [OSTI]

    Morton, David

    , or industry levels. This paper addresses the issues of workforce training and allocation on construction. Srour1 ; Carl T. Haas2 ; and David P. Morton3 Abstract: The construction industry in the United States-9364 2006 132:11 1158 CE Database subject headings: Construction industry; Optimization; Training; Employees

  2. Stress and Productivity Performance in the Workforce Modelled with Binary Decision Automata

    E-Print Network [OSTI]

    Ashlock, Dan

    Stress and Productivity Performance in the Workforce Modelled with Binary Decision Automata Matthew of stress in the workplace. Stress and stress-related health problems are a serious matter but, prior to this series of studies, quantitative modeling of stress has been substantially neglected. This model builds

  3. Texas A&M University--Central Texas Workforce Planning & Employment

    E-Print Network [OSTI]

    Diestel, Geoff

    Texas A&M University--Central Texas Workforce Planning & Employment HRM 514.321 - Spring 2013 Dr-making skills will be emphasized. Prerequisite: HRM 501. Mode of instruction and course access: This course, scorecard metrics, global HRM, etc.) related to designing and implementing effective and efficient human

  4. Texas A&M University--Central Texas Workforce Planning & Employment

    E-Print Network [OSTI]

    Diestel, Geoff

    Texas A&M University--Central Texas Workforce Planning & Employment HRM 514.110 - Spring 2014 Dr decision-making skills will be emphasized. Prerequisite: HRM 501. Mode of instruction and course access completion of the Personnel & Human Resource Management (P/HRM) course, each student will be able

  5. TITLE: HIPAA PRIVACY AND INFORMATION SECURITY TRAINING FOR COLUMBIA UNIVERSITY MEDICAL CENTER WORKFORCE

    E-Print Network [OSTI]

    Columbia University

    . The online training includes two modules. o HIPAA Privacy o Security Essentials Workforce members shall "Compliance") and select training module TC0019 (HIPAA: Health Insurance Portability and Accountability Act) is provided through the online training modules. It is the responsibility of each school to assure that all

  6. Geography in the Workforce: Good News to Share If ever there was any question that

    E-Print Network [OSTI]

    Li, X. Rong

    Geography in the Workforce: Good News to Share If ever there was any question that geography. They also examine political and cultural structures as they relate to geography. This is a good occupation that geography graduates had the very lowest unemployment rate of all disciplines in the United Kingdom (http

  7. Ultraviolet asymptotics for quasiperiodic AdS_4 perturbations

    E-Print Network [OSTI]

    Ben Craps; Oleg Evnin; Puttarak Jai-akson; Joris Vanhoof

    2015-10-29

    Spherically symmetric perturbations in AdS-scalar field systems of small amplitude epsilon approximately periodic on time scales of order 1/epsilon^2 (in the sense that no significant transfer of energy between the AdS normal modes occurs) have played an important role in considerations of AdS stability. They are seen as anchors of stability islands where collapse of small perturbations to black holes does not occur. (This collapse, if it happens, typically develops on time scales of the order 1/epsilon^2.) We construct an analytic treatment of the frequency spectra of such quasiperiodic perturbations, paying special attention to the large frequency asymptotics. For the case of a self-interacting phi^4 scalar field in a non-dynamical AdS background, we arrive at a fairly complete analytic picture involving quasiperiodic spectra with an exponential suppression modulated by a power law at large mode numbers. For the case of dynamical gravity, the structure of the large frequency asymptotics is more complicated. We give analytic explanations for the general qualitative features of quasiperiodic solutions localized around a single mode, in close parallel to our discussion of the probe scalar field, and find numerical evidence for logarithmic modulations in the gravitational quasiperiodic spectra existing on top of the formulas previously reported in the literature.

  8. Ultraviolet asymptotics for quasiperiodic AdS_4 perturbations

    E-Print Network [OSTI]

    Ben Craps; Oleg Evnin; Puttarak Jai-akson; Joris Vanhoof

    2015-09-04

    Spherically symmetric perturbations in AdS-scalar field systems of small amplitude epsilon approximately periodic on time scales of order 1/epsilon^2 (in the sense that no significant transfer of energy between the AdS normal modes occurs) have played an important role in considerations of AdS stability. They are seen as anchors of stability islands where collapse of small perturbations to black holes does not occur. (This collapse, if it happens, typically develops on time scales of the order 1/epsilon^2.) We construct an analytic treatment of the frequency spectra of such quasiperiodic perturbations, paying special attention to the large frequency asymptotics. For the case of a self-interacting phi^4 scalar field in a non-dynamical AdS background, we arrive at a fairly complete analytic picture involving quasiperiodic spectra with an exponential suppression modulated by a power law at large mode numbers. For the case of dynamical gravity, the structure of the large frequency asymptotics is more complicated. We give analytic explanations for the general qualitative features of quasiperiodic solutions localized around a single mode, in close parallel to our discussion of the probe scalar field, and find numerical evidence for logarithmic modulations in the gravitational quasiperiodic spectra existing on top of the formulas previously reported in the literature.

  9. Ultraviolet asymptotics for quasiperiodic AdS_4 perturbations

    E-Print Network [OSTI]

    Craps, Ben; Jai-akson, Puttarak; Vanhoof, Joris

    2015-01-01

    Spherically symmetric perturbations in AdS-scalar field systems of small amplitude epsilon approximately periodic on time scales of order 1/epsilon^2 (in the sense that no significant transfer of energy between the AdS normal modes occurs) have played an important role in considerations of AdS stability. They are seen as anchors of stability islands where collapse of small perturbations to black holes does not occur. (This collapse, if it happens, typically develops on time scales of the order 1/epsilon^2.) We construct an analytic treatment of the frequency spectra of such quasiperiodic perturbations, paying special attention to the large frequency asymptotics. For the case of a self-interacting phi^4 scalar field in a non-dynamical AdS background, we arrive at a fairly complete analytic picture involving quasiperiodic spectra with an exponential suppression modulated by a power law at large mode numbers. For the case of dynamical gravity, the structure of the large frequency asymptotics is more complicated....

  10. A paucity of bulk entangling surfaces: AdS wormholes with de Sitter interiors

    E-Print Network [OSTI]

    Fischetti, S; Marolf, D; Wall, AC

    2015-01-01

    Inside the horizon with AdS / CFT, Phys.Rev. D67 (2003)entanglement entropy from AdS/CFT, Phys.Rev.Lett. 96 (2006)dual to Reissner-Nordstrm AdS 5 , JHEP 1404 (2014) 023, [

  11. Perturbative entanglement thermodynamics for AdS spacetime: Renormalization

    E-Print Network [OSTI]

    Mishra, Rohit

    2015-01-01

    We study the effect of charged excitations in the AdS spacetime on the first law of entanglement thermodynamics. It is found that `boosted' AdS black holes give rise to a more general form of first law which includes chemical potential and charge density. To obtain this result we have to resort to a second order perturbative calculation of entanglement entropy for small size subsystems. At first order the form of entanglement law remains unchanged even in the presence of charged excitations. But the thermodynamic quantities have to be appropriately `renormalized' at the second order due to the corrections. We work in the perturbative regime where $T_{thermal}\\ll T_E$.

  12. Perturbative entanglement thermodynamics for AdS spacetime: Renormalization

    E-Print Network [OSTI]

    Rohit Mishra; Harvendra Singh

    2015-07-14

    We study the effect of charged excitations in the AdS spacetime on the first law of entanglement thermodynamics. It is found that `boosted' AdS black holes give rise to a more general form of first law which includes chemical potential and charge density. To obtain this result we have to resort to a second order perturbative calculation of entanglement entropy for small size subsystems. At first order the form of entanglement law remains unchanged even in the presence of charged excitations. But the thermodynamic quantities have to be appropriately `renormalized' at the second order due to the corrections. We work in the perturbative regime where $T_{thermal}\\ll T_E$.

  13. Emergent quantum criticality, Fermi surfaces, and AdS2

    E-Print Network [OSTI]

    Thomas Faulkner; Hong Liu; John McGreevy; David Vegh

    2011-10-30

    Gravity solutions dual to d-dimensional field theories at finite charge density have a near-horizon region which is AdS_2 x R^{d-1}. The scale invariance of the AdS_2 region implies that at low energies the dual field theory exhibits emergent quantum critical behavior controlled by a (0+1)-dimensional CFT. This interpretation sheds light on recently-discovered holographic descriptions of Fermi surfaces, allowing an analytic understanding of their low-energy excitations. For example, the scaling behavior near the Fermi surfaces is determined by conformal dimensions in the emergent IR CFT. In particular, when the operator is marginal in the IR CFT, the corresponding spectral function is precisely of the "Marginal Fermi Liquid" form, postulated to describe the optimally doped cuprates.

  14. Spiky Strings on AdS(4) X CP**3

    E-Print Network [OSTI]

    Bum-Hoon Lee; Kamal L. Panigrahi; Chanyong Park

    2008-11-07

    We study a giant magnon and a spike solution for the string rotating on AdS(4) X CP**3 geometry. We consider rigid rotating fundamental string in the SU(2) X SU(2) sector inside the CP**3 and find out the general form of all the conserved charges. We find out the dispersion relation corresponding to both the known giant magnon and the new spike solutions. We further study the finite size correction in both cases.

  15. Fermilab Today | Classifieds Ad Form

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

    will be posted on the Internet and can lead to responses from outside the lab. Some ads posted in Fermilab Today in the past have received responses from scammers who, for...

  16. A crossfield literature review of the HIV and AIDS impacts on the Ugandan workforce through the HRD lens 

    E-Print Network [OSTI]

    Howard, Debra Mayes

    2005-02-17

    Museveni, editorials, foundation 9 and corporate reports and multi-NPS entities (INGO, NGO, CBO, and FBO) as ?the method of discovery to gain insight and understanding? (Merriam, 1998) into the impacts of HIV and AIDS on the Ugandan workforce and how... HRD impacts can help improve workforce and decrease HIV and AIDS incidence and prevalence. Collection of Data Procedures for synthesizing data are through the analysis of volumes of text data (Bogdan and Biklen, 2003), focusing upon the impacts...

  17. Strategies to Address Identified Education Gaps in the Preparation of a National Security Workforce

    SciTech Connect (OSTI)

    None

    2008-06-30

    This report will discuss strategies available to address identified gaps and weaknesses in education efforts aimed at the preparation of a skilled and properly trained national security workforce.The need to adequately train and educate a national security workforce is at a critical juncture. Even though there are an increasing number of college graduates in the appropriate fields, many of these graduates choose to work in the private sector because of more desirable salary and benefit packages. This is contributing to an inability to fill vacant positions at NNSA resulting from high personnel turnover from the large number of retirements. Further, many of the retirees are practically irreplaceable because they are Cold War scientists that have experience and expertise with nuclear weapons.

  18. Thermal Fluctuations in a Charged AdS Black Hole

    E-Print Network [OSTI]

    Pourhassan, B

    2015-01-01

    In this paper, we will analyze the effects of thermal fluctuations on a charged AdS black hole. This will be done by analyzing the corrections to black hole thermodynamics due to these thermal fluctuations. We will demonstrate that the entropy of this black hole get corrected by logarithmic term. We will also calculate other corrections to other important thermodynamic quantities for this black hole. Finally, we will use the corrected value of the specific heat to analyze the phase transition in this system.

  19. Thermal Fluctuations in a Charged AdS Black Hole

    E-Print Network [OSTI]

    B. Pourhassan; Mir Faizal

    2015-08-12

    In this paper, we will analyze the effects of thermal fluctuations on a charged AdS black hole. This will be done by analyzing the corrections to black hole thermodynamics due to these thermal fluctuations. We will demonstrate that the entropy of this black hole get corrected by logarithmic term. We will also calculate other corrections to other important thermodynamic quantities for this black hole. Finally, we will use the corrected value of the specific heat to analyze the phase transition in this system.

  20. Tunneling during Quantum Collapse in AdS Spacetime

    E-Print Network [OSTI]

    Cenalo Vaz; Kinjalk Lochan

    2013-01-30

    We extend previous results on the reflection and transmission of self-gravitating dust shells across the apparent horizon during quantum dust collapse to non-marginally-bound dust collapse in arbitrary dimensions with a negative cosmological constant. We show that the Hawking temperature is independent of the energy function and that the wave functional describing the collapse is well behaved at the Hawking-Page transition point. Thermal radiation from the apparent horizon appears as a generic result of non-marginal collapse in AdS space-time owing to the singular structure of the Hamiltonian constraint at the apparent horizon.

  1. Entanglement Entropy and Duality in AdS(4)

    E-Print Network [OSTI]

    Ioannis Bakas; Georgios Pastras

    2015-04-30

    Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.

  2. Topics in 3D N=2 AdS supergravity in superspace

    E-Print Network [OSTI]

    Gabriele Tartaglino-Mazzucchelli

    2012-02-01

    We review some recent results on the construction in superspace of 3D N=2 AdS supergravities and on the formulation of rigid supersymmetric theories in (1,1) and (2,0) AdS superspaces.

  3. Scattering States in AdS/CFT

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan

    2011-04-13

    We show that suitably regulated multi-trace primary states in large N CFTs behave like `in' and `out' scattering states in the flat-space limit of AdS. Their transition matrix elements approach the exact scattering amplitudes for the bulk theory, providing a natural CFT definition of the flat space S-Matrix. We study corrections resulting from the AdS curvature and particle propagation far from the center of AdS, and show that AdS simply provides an IR regulator that disappears in the flat space limit.

  4. Strings on AdS Wormholes and Nonsingular Black Holes

    E-Print Network [OSTI]

    H. Lu; Justin F. Vazquez-Poritz; Zhibai Zhang

    2014-10-22

    Certain AdS black holes in the STU model can be conformally scaled to wormhole and black hole solutions of an f(R) type theory which have two asymptotically AdS regions and are completely free of curvature singularities. While there is a delta-function source for the dilaton, classical string probes are not sensitive to this singularity. If the AdS/CFT correspondence can be applied in this context, then the wormhole background describes a phase in which two copies of a conformal field theory interact with each other, whereas the nonsingular black hole describes entangled states. By studying the behavior of open strings on these backgrounds, we extract a number of features of the quarks and anti-quarks that live in the field theories. In the interacting phase, we find that there is a maximum speed with which the quarks can move without losing energy, beyond which energy is transferred from a quark in one field theory to a quark in the other. We also compute the rate at which moving quarks within entangled states lose energy to the two surrounding plasmas. While a quark-antiquark pair within a single field theory exhibits Coulomb interaction for small separation, a quark in one field theory exhibits spring-like confinement with an anti-quark in the other field theory. For the entangled states, we study how the quark-antiquark screening length depends on temperature and chemical potential. In the interacting phase of the two field theories, a quadruplet made up of one quark-antiquark pair in each field theory can undergo transitions involving how the quarks and antiquarks are paired in terms of the screening.

  5. Before the Senate Homeland Security and Governmental Affairs Subcommittee on Oversight of Government Management, the Workforce, and the District of Columbia

    Broader source: Energy.gov [DOE]

    Subject: Strengthening the Federal Acquisition Workforce: Government-wide Leadership and Initiatives By: John Bashista, Deputy Director, Office of Procurement and Assistance Management, Office of Management

  6. AdHeat: An Influence-based Diffusion Model for Propagating Hints to Match Ads

    E-Print Network [OSTI]

    Cortes, Corinna

    AdHeat: An Influence-based Diffusion Model for Propagating Hints to Match Ads Hongji Bao Google edchang@google.com ABSTRACT In this paper, we present AdHeat, a social ad model con- sidering user influence in addition to relevance for match- ing ads. Traditionally, ad placement employs the relevance

  7. Thermodynamics of Charged Lovelock - AdS Black Holes

    E-Print Network [OSTI]

    Prasobh C. B.; Jishnu Suresh; V. C. Kuriakose

    2015-10-16

    We investigate the thermodynamic behavior of maximally symmetric charged, asymptotically AdS black hole solutions of Lovelock gravity. We explore the thermodynamic stability of such solutions by the ordinary method of calculating the specific heat of the black holes and investigating its divergences which signal second order phase transitions between black hole states. We then utilize the methods of thermodynamic geometry of black hole spacetimes in order to explain the origin of these points of divergence. We calculate the curvature scalar corresponding to a Legendre-invariant thermodynamic metric of these spacetimes and find that the divergences in the black hole specific heat correspond to singularities in the thermodynamic phase space. We also calculate the area spectrum for large black holes in the model by applying the Bohr-Sommerfeld quantization to the adiabatic invariant calculated for the spacetime.

  8. AdS Bubbles, E$p$-branes and Entanglement

    E-Print Network [OSTI]

    Harvendra Singh

    2014-10-15

    The AdS-bubble solutions interestingly mimic Schr\\"odinger-like geometries when expressed in light-cone coordinates. These D$p$ bubble vacuas exhibit asymmetric scaling property with a negative dynamical exponent of time $a0$ in type II* super-strings. We obtain an expression for the entanglement entropy for `bubble E3-branes'. It is argued that the entropy from E3-bubbles has to be the lowest.

  9. Islands of stability and recurrence times in AdS

    E-Print Network [OSTI]

    Stephen R. Green; Antoine Maillard; Luis Lehner; Steven L. Liebling

    2015-07-29

    We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs for initial data far from a QP solution, the TTF description breaks down as an approximation to the full system. Depending on the higher order dynamics of the full system, this often signals an imminent collapse to a black hole.

  10. Islands of stability and recurrence times in AdS

    E-Print Network [OSTI]

    Stephen R. Green; Antoine Maillard; Luis Lehner; Steven L. Liebling

    2015-08-27

    We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs for initial data far from a QP solution, the TTF description breaks down as an approximation to the full system. Depending on the higher order dynamics of the full system, this often signals an imminent collapse to a black hole.

  11. Islands of stability and recurrence times in AdS

    E-Print Network [OSTI]

    Green, Stephen R; Lehner, Luis; Liebling, Steven L

    2015-01-01

    We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs ...

  12. The AdS Graviton/Pomeron Description of Deep Inelastic Scattering at Small x

    E-Print Network [OSTI]

    Richard C. Brower; Marko Djuric; Ina Sarcevic; Chung-I Tan

    2011-06-28

    In the holographic or AdS/CFT dual to QCD, the Pomeron is identified with a Reggeized Graviton in $AdS_5$. We emphasize the importance of confinement, which in this context corresponds to a deformation of $AdS_5$ geometry in the IR. The holographic Pomeron provides a very good fit to the combined data from HERA for Deep Inelastic Scattering at small $x$, lending new confidence to this AdS dual approach to high energy diffractive scattering.

  13. Introduction A quality health care workforce is vital to the well being of New Hampshire's economy and the state's aging population.

    E-Print Network [OSTI]

    Snider, Barry B.

    Introduction A quality health care workforce is vital to the well being of New Hampshire's economy contributed to some of this job growth.1 This impacts New Hampshire, where 85,891 people currently work strategies that New Hampshire employers, educational institutions, workforce development agencies

  14. This workforce solution was funded by a grant awarded by the U.S. Department of Labor's Employment and Training Administration. The solution was created

    E-Print Network [OSTI]

    Department of Labor and Workforce Development Prepared by the John J. Heldrich Center for Workforce Development Green Talent Research Initiative October 2011 #12;2 Introduction Discussion is ongoing at the national and state levels about the potential for growth in green jobs and the need to expand the skills

  15. Job/Task Analysis: Enhancing the Commercial Building Workforce Through the Development of Foundational Materials; Preprint

    SciTech Connect (OSTI)

    Studer, D.; Kemkar, S.

    2012-09-01

    For many commercial building operation job categories, industry consensus has not been reached on the knowledge, skills, and abilities that practitioners should possess. The goal of this guidance is to help streamline the minimum competencies taught or tested by organizations catering to building operations and maintenance personnel while providing a basis for developing and comparing new and existing training programs in the commercial building sector. The developed JTAs will help individuals identify opportunities to enhance their professional skills, enable industry to identify an appropriately skilled workforce, and allow training providers to ensure that they are providing the highest quality product possible.

  16. Entropy of near-extremal black holes in AdS5

    E-Print Network [OSTI]

    Balasubramanian, Vijay

    2008-01-01

    is a family of asymptotically AdS 5 ×S 5 black holes chargedCvetic et al. , “Embedding AdS black holes in ten and elevenA toy model for the AdS/CFT correspondence,” JHEP 0407,

  17. Determining an asymptotically AdS Einstein spacetime from data on its conformal boundary

    E-Print Network [OSTI]

    Enciso, Alberto

    Determining an asymptotically AdS Einstein spacetime from data on its conformal boundary Alberto of the AdS/CFT correspondence in string theory is the holographic prescription problem for Einstein metrics and to discuss its physical implications. PACS numbers: 04.20.Ex, 04.20.Ha, 11.25.Tq Keywords: AdS metrics

  18. Spectral Flow in AdS(3)/CFT(2)

    E-Print Network [OSTI]

    Gaston Giribet; Ari Pakman; Leonardo Rastelli

    2007-12-19

    We study the spectral flowed sectors of the H3 WZW model in the context of the holographic duality between type IIB string theory in AdS(3)x S^3 x T^4 with NSNS flux and the symmetric product orbifold of T^4. We construct explicitly the physical vertex operators in the flowed sectors that belong to short representations of the superalgebra, thus completing the bulk-to-boundary dictionary for 1/2 BPS states. We perform a partial calculation of the string three-point functions of these operators. A complete calculation would require the three-point couplings of non-extremal flowed operators in the H3 WZW model, which are at present unavailable. In the unflowed sector, perfect agreement has recently been found between the bulk and boundary three-point functions of 1/2 BPS operators. Assuming that this agreement persists in the flowed sectors, we determine certain unknown three-point couplings in the H3 WZW model in terms of three-point couplings of affine descendants in the SU(2) WZW model.

  19. Ad Building demolition, recycling completed

    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 News Publications Traditional Knowledge KiosksAbout AwardedAcronyms This is aHomeAd Building

  20. Light-cone AdS/CFT-adapted approach to AdS fields/currents, shadows, and conformal fields

    E-Print Network [OSTI]

    R. R. Metsaev

    2015-07-23

    Light-cone gauge formulation of fields in AdS space and conformal field theory in flat space adapted for the study of AdS/CFT correspondence is developed. Arbitrary spin mixed-symmetry fields in AdS space and arbitrary spin mixed-symmetry currents, shadows, and conformal fields in flat space are considered on an equal footing. For the massless and massive fields in AdS and the conformal fields in flat space, simple light-cone gauge actions leading to decoupled equations of motion are found. For the currents and shadows, simple expressions for all 2-point functions are also found. We demonstrate that representation of conformal algebra generators on space of currents, shadows, and conformal fields can be built in terms of spin operators entering the light-cone gauge formulation of AdS fields. This considerably simplifies the study of AdS/CFT correspondence. Light-cone gauge actions for totally symmetric arbitrary spin long conformal fields in flat space are presented. We apply our approach to the study of totally antisymmetric (one-column) and mixed-symmetry (two-column) fields in AdS space and currents, shadows, and conformal fields in flat space.

  1. Microsystems technologist workforce development capacity and challenges in Central New Mexico.

    SciTech Connect (OSTI)

    Osborn, Thor D.

    2008-04-01

    Sandia National Laboratories has made major investments in microsystems-related infrastructure and research staff development over the past two decades, culminating most recently in the MESA project. These investment decisions have been made based in part upon the necessity for highly reliable, secure, and for some purposes, radiation-hardened devices and subsystems for safety and sustainability of the United States nuclear arsenal and other national security applications. SNL's microsystems development and fabrication capabilities are located almost entirely within its New Mexico site, rendering their effectiveness somewhat dependent on the depth and breadth of the local microsystems workforce. Consequently, the status and development capacity of this workforce has been seen as a key personnel readiness issue in relation to the maintenance of SNL's microsystems capabilities. For this reason SNL has supported the instantiation and development of the Southwest Center for Microsystems Education, an Advanced Technology Education center funded primarily by the National Science Foundation, in order to foster the development of local training capacity for microsystems technologists. Although the SCME and the associated Manufacturing Technology program at Central New Mexico Community College have developed an effective curriculum and graduated several highly capable microsystems technologists, the future of both the center and the degree program remain uncertain due to insufficient student enrollment. The central region of New Mexico has become home to many microsystems-oriented commercial firms. As the demands of those firms for technologists evolve, SNL may face staffing problems in the future, especially if local training capacity is lost.

  2. U(1) Instantons on AdS_4 and the Uplift to Exact Supergravity Solutions

    E-Print Network [OSTI]

    Ali Imaanpur

    2011-11-23

    We consider self-duality equation of U(1) gauge fields on Euclidean AdS_4 space, and find a simple finite action solution. With a suitable ansatz, we are able to embed this solution into the 10d supergravity background of AdS_4\\times CP^3. Further, we show that the solution can be uplifted to an exact solution in 11d supergravity background of AdS_4\\times SE_7.

  3. Dynamical sectors for a spinning particle in AdS3 Carles Batlle1

    E-Print Network [OSTI]

    Batlle, Carles

    Dynamical sectors for a spinning particle in AdS3 Carles Batlle1 , Joaquim Gomis2 , Kiyoshi the dynamics of a particle of mass M and spin J in AdS3. The study reveals the presence of different dynamical sectors depending on the relative values of M, J and the AdS3 radius R. For the subcritical M2 R2 -J2 > 0

  4. AdS solutions to the 2D type 0A effective action David Mattoon Thompson*

    E-Print Network [OSTI]

    Romps, David M.

    AdS solutions to the 2D type 0A effective action David Mattoon Thompson* Jefferson Physical November 2004) We present a two-parameter family of AdS solutions to the two-dimensional type 0A effective action. DOI: 10.1103/PhysRevD.70.106001 PACS numbers: 11.25.Mj I. INTRODUCTION AdS backgrounds of string

  5. Production Requirements Full-Page Ads

    E-Print Network [OSTI]

    Buehrer, R. Michael

    Production Requirements Full-Page Ads · The final trim size for a full-page ad is 8.75" x 10.875". · Full-page ads should also include .125-inch bleed on all four sides, making the total image area 9" x if over-trimming occurs in the printing process. 1/2-Page and 1/3-Page Ads · The final trim size for a 1

  6. Ads-Portal Domains: Identification and Measurements

    E-Print Network [OSTI]

    Yang, Xiaowei

    4 Ads-Portal Domains: Identification and Measurements MISHARI ALMISHARI University of California, Irvine and XIAOWEI YANG Duke University An ads-portal domain refers to a Web domain that shows only develop a machine-learning- based classifier to identify ads-portal domains, which has 96% accuracy. We

  7. Online Effects of Offline Ads Diane Lambert

    E-Print Network [OSTI]

    Cortes, Corinna

    Online Effects of Offline Ads Diane Lambert Google, Inc. 76 Ninth Ave New York, NY 10011 dlambert a methodology for assessing how ad campaigns in offline media such as print, audio and TV affect online in ad appeared suggests heightened interest in the advertised product, as long as there would have been

  8. Longitudinal Analysis of Android Ad Library Permissions

    E-Print Network [OSTI]

    Wallach, Dan

    Longitudinal Analysis of Android Ad Library Permissions Theodore Book, Adam Pridgen, Dan S. Wallach in the behavior of Android ad libraries. Taking a sample of 114,000 apps, we extract and classify their ad particular risks to user privacy and security. I. INTRODUCTION The Android operating system is one

  9. The different phases of hairy black holes in AdS5 space

    E-Print Network [OSTI]

    Gaston Giribet; Andres Goya; Julio Oliva

    2014-12-31

    We investigate the thermodynamics of hairy black holes in asymptotically Anti-de Sitter (AdS) space, including backreaction. Resorting to the Euclidean path integral approach, we show that matter conformally coupled to Einstein gravity in five dimensions may exhibit a phase transition whose endpoint turns out to be a hairy black hole in AdS5 space. The scalar field configuration happens to be regular everywhere outside and on the horizon, and behaves asymptotically in such a way that respects the AdS boundary conditions that are relevant for AdS/CFT. The theory presents other peculiar features in the ultraviolet, like the existence of black holes with arbitrarily low temperature in AdS5. This provides a simple setup in which the fully backreacting problem of a hair forming in AdS at certain critical temperature can be solved analytically.

  10. The different phases of hairy black holes in AdS5 space

    E-Print Network [OSTI]

    Giribet, Gaston; Oliva, Julio

    2015-01-01

    We investigate the thermodynamics of hairy black holes in asymptotically Anti-de Sitter (AdS) space, including backreaction. Resorting to the Euclidean path integral approach, we show that matter conformally coupled to Einstein gravity in five dimensions may exhibit a phase transition whose endpoint turns out to be a hairy black hole in AdS5 space. The scalar field configuration happens to be regular everywhere outside and on the horizon, and behaves asymptotically in such a way that respects the AdS boundary conditions that are relevant for AdS/CFT. The theory presents other peculiar features in the ultraviolet, like the existence of black holes with arbitrarily low temperature in AdS5. This provides a simple setup in which the fully backreacting problem of a hair forming in AdS at certain critical temperature can be solved analytically.

  11. NON-DISCRIMINATION POLICY AUB encourages a diverse student body and workforce, and is committed to the principle of

    E-Print Network [OSTI]

    NON-DISCRIMINATION POLICY AUB encourages a diverse student body and workforce, and is committed, admissions, and employment policies, and other university programs and activities, AUB does not discriminate, in compliance with Title IX of the US Education Amendments of 1972, which prohibits sex discrimination

  12. Wind for Schools: Developing Educational Programs to Train a New Workforce and the Next Generation of Wind Energy Experts (Poster)

    SciTech Connect (OSTI)

    Flowers, L.; Baring-Gould, I.

    2010-04-01

    As the United States dramatically expands wind energy deployment, the industry is challenged with developing a skilled workforce and addressing public resistance. Wind Powering America's Wind for Schools project addresses these issues by: Developing Wind Application Centers (WACs) at universities; installing small wind turbines at community "host" schools; and implementing teacher training with interactive curricula at each host school.

  13. Strings on AdS2 and the high-energy limit of noncritical M-theory

    E-Print Network [OSTI]

    Horava, Petr

    2008-01-01

    B. Clark, and A. Karch, The CFT/AdS correspondence, massiveCoordinate-free action for AdS(3) higher-spin-matterKlebanov and A. M. Polyakov, AdS dual of the critical O(N)

  14. The Incremental Reach and Cost Efficiency of Online Video Ads over TV Ads

    E-Print Network [OSTI]

    Cortes, Corinna

    The Incremental Reach and Cost Efficiency of Online Video Ads over TV Ads Yuxue Jin, Sheethal number of brand marketers are including video ads in their advertising campaigns. These advertisers would like to know the incremental reach and cost efficiency of their video and display ads compared

  15. Boundary conditions for conformally coupled scalar in AdS$_4$

    E-Print Network [OSTI]

    Jae-Hyuk Oh

    2015-02-05

    We consider conformally coupled scalar with $\\phi^4$ coupling in AdS$_4$ and study its various boundary conditions on AdS boundary. We have obtained perturbative solutions of equation of motion of the conformally coupled scalar with power expansion order by order in $\\phi^4$ coupling $\\lambda$ up to $\\lambda^2$ order. In its dual CFT, we get 2,4 and 6 point functions by using this solution with Dirichlet and Neumann boundary conditions via AdS/CFT dictionary. We also consider marginal deformation on AdS boundary and get its on-shell and boundary effective actions.

  16. LWR (Light Water Reactor) power plant simulations using the AD10 and AD100 systems

    SciTech Connect (OSTI)

    Wulff, W.; Cheng, H.S.; Chien, C.J.; Jang, J.Y.; Lin, H.C.; Mallen, A.N.; Wang, S.J. (Brookhaven National Lab., Upton, NY (USA); Institute of Nuclear Energy Research, Lung-Tan (Taiwan); Tawian Power Co., Taipei (Taiwan); Brookhaven National Lab., Upton, NY (USA); Institute of Nuclear Energy Research, Lung-Tan (Taiwan))

    1989-01-01

    Boiling (BWR) and Pressurized (PWR) Water Reactor Power Plants are being simulated at BNL with the AD10 and AD100 Peripheral Processor Systems. The AD10 system has been used for BWR simulations since 1984 for safety analyses, emergency training and optimization studies. BWR simulation capabilities have been implemented recently on the AD100 system and PWR simulation capabilities are currently being developed under the auspices of international cooperation. Modeling and simulation methods are presented with emphasis on the simulation of the Nuclear Steam Supply System. Results are presented for BWR simulation and performance characteristics are compared of the AD10 and AD100 systems. It will be shown that the AD100 simulates two times faster than two AD10 processors operating in parallel and that the computing capacity of one AD100 (with FMU processor) is twice as large as that of two AD10 processors. 9 refs., 5 figs., 1 tab.

  17. Non-Relativistic AdS Branes and Newton-Hooke Superalgebra

    E-Print Network [OSTI]

    Makoto Sakaguchi; Kentaroh Yoshida

    2006-05-12

    We examine a non-relativistic limit of D-branes in AdS_5xS^5 and M-branes in AdS_{4/7}xS^{7/4}. First, Newton-Hooke superalgebras for the AdS branes are derived from AdSxS superalgebras as Inonu-Wigner contractions. It is shown that the directions along which the AdS-brane worldvolume extends are restricted by requiring that the isometry on the AdS-brane worldvolume and the Lorentz symmetry in the transverse space naturally extend to the super-isometry. We also derive Newton-Hooke superalgebras for pp-wave branes and show that the directions along which a brane worldvolume extends are restricted. Then the Wess-Zumino terms of the AdS branes are derived by using the Chevalley-Eilenberg cohomology on the super-AdSxS algebra, and the non-relativistic limit of the AdS-brane actions is considered. We show that the consistent limit is possible for the following branes: Dp (even,even) for p=1 mod 4 and Dp (odd,odd) for p=3 mod 4 in AdS_5xS^5, and M2 (0,3), M2 (2,1), M5 (1,5) and M5 (3,3) in AdS_{4}xS^{7} and S^{4}xAdS_{7}. We furthermore present non-relativistic actions for the AdS branes.

  18. Topics in network communications

    E-Print Network [OSTI]

    Cannons, Jillian Leigh

    2008-01-01

    Int. Workshop on Evaluation of Wireless Ad Hoc, Sensor andon Performance Evaluation of Wireless Ad Hoc, Sensor and

  19. Three-dimensional N=2 (AdS) supergravity and associated supercurrents

    E-Print Network [OSTI]

    Sergei M. Kuzenko; Gabriele Tartaglino-Mazzucchelli

    2012-09-28

    Long ago, Achucarro and Townsend discovered that in three dimensions (3D) N-extended anti-de Sitter (AdS) supergravity exists in several incarnations, which were called the (p,q) AdS supergravity theories with non-negative integers p>=q such that N=p+q. Using the superspace approach to 3D N-extended supergravity developed in arXiv:1101.4013, we present three superfield formulations for N=2 supergravity that allow for well defined cosmological terms and supersymmetric AdS solutions. The conformal compensators corresponding to these theories are respectively: (i) a chiral scalar multiplet: (ii) a vector multiplet; and (iii) an improved complex linear multiplet. The theories corresponding to (i) and (iii) are shown to provide two dually equivalent realizations of the (1,1) AdS supergravity, while (ii) describes the (2,0) AdS supergravity. We associate with each supergravity formulation, with and without a cosmological term, a consistent supercurrent multiplet. The supercurrents in the (1,1) and (2,0) AdS backgrounds are derived for the first time. We elaborate on rigid supersymmetric theories in (1,1) and (2,0) AdS superspaces.

  20. Supersymmetric Asymptotic AdS and Lifshitz Solutions in Einstein-Weyl and Conformal Supergravities

    E-Print Network [OSTI]

    H. Lu; Zhao-Long Wang

    2012-05-22

    We show that there exist supersymmetric Lifshitz vacua in off-shell Einstein-Weyl supergravity, in addition to the BPS AdS_4 vacuum. The Lifshitz exponents are determined by the product of the cosmological constant and the coupling of the Weyl-squared term. We then obtain the equations of the supersymmetric solutions that are asymptotic to the AdS or Lifshitz vacua. We obtain many examples of exact solutions as well as numerical ones. We find examples of extremal AdS black branes whose near-horizon geometry is AdS_2\\times T^2. We also find an extremal Lifshitz black hole with z=-2, whose horizon coincides with the curvature singularity. However the asymptotic Lifshitz solutions are in general smooth wormholes. In conformal supergravity, we find intriguing examples of non-extremal "BPS" AdS and Lifshitz black holes whose local Killing spinor is divergent on the horizon. We show that all the supersymmetric asymptotic AdS and Lifshitz solutions have the vanishing Noether charge associated with some scaling symmetry. We also study the integrability condition of the Killing spinor equation and the supersymmetric invariance of the action. Finally we show that the only spherically-symmetric BPS solution is the AdS vacuum.