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1

Definition: Backhaul Communications | Open Energy Information  

Open Energy Info (EERE)

Backhaul Communications Backhaul Communications Jump to: navigation, search Dictionary.png Backhaul Communications The infrastructure used to connect the AMI head-end system to the AMI data collectors or access points. Backhaul communications typically utilize fiber-optic cables, high speed wireless connections, or other networks that can handle large amounts of data. Backhaul communications can utilize utility-owned infrastructure or third party communications providers.[1] Related Terms advanced metering infrastructure References ↑ https://www.smartgrid.gov/category/technology/backhaul_communications [[C LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitionssmart grid,smart grid, |Template:BASEPAGENAME]]smart grid,smart grid, Retrieved from

2

Topology forming and optimization framework for heterogeneous wireless back-haul networks supporting unidirectional technologies  

Science Conference Proceedings (OSTI)

Wireless operators, in developed or emerging regions, must support triple-play service offerings as demanded by the market or mandated by regulatory bodies through so-called Universal Service Obligations (USOs). Since individual operators might face ... Keywords: All-IP network, IEEE 802.21, MPLS, Multi-radio WNM, QoS, Traffic engineering, Unidirectional links

M. Kretschmer; P. Batroff; G. Ghinea

2013-03-01T23:59:59.000Z

3

Smart Grid Communication Networks  

Science Conference Proceedings (OSTI)

... ITL staff led the evaluation of networking technologies for Smart Grid communication applications. ITL's staff lead the SGIP Priority Action Plans ...

2013-04-29T23:59:59.000Z

4

Supporting Advanced Communications Networks  

Science Conference Proceedings (OSTI)

... it will rely on revolutionary advances in network architecture. ... telemedicine), sensor and control networks (eg, Smart Grid, environmental monitoring ...

2012-02-13T23:59:59.000Z

5

Technology Diffusion in Communication Networks  

E-Print Network (OSTI)

In the rich and growing literature on diffusion and cascade effects in social networks, it is assumed that a node's actions are influenced only by its immediate neighbors in the social network. However, there are other contexts in which this highly-local view of influence is not applicable. The diffusion of technologies in communication networks is one important example; here, a node's actions should also be influenced by remote nodes that it can communicate with using the new technology. We propose a new model of technology diffusion inspired by the networking literature on this topic. Given the communication network $G(V,E)$, we assume that node $u$ activates (i.e. deploys the new technology) when it is adjacent to a connected component of active nodes in $G$ of size exceeding node $u$'s threshold $\\theta(u)$. We focus on an algorithmic problem that is well understood in the context of social networks, but thus far has only heuristic solutions in the context of communication networks: determining the smalle...

Goldberg, Sharon

2012-01-01T23:59:59.000Z

6

A Hybrid Network Emergency Communication Model  

Science Conference Proceedings (OSTI)

To communicate within disaster scenarios, different devices/systems need to cooperate with specific protocols. The key communication protocol needs to provide interoperability among these systems and provide the solution for emergency services. The paper ... Keywords: Ad Hoc Network, Hybrid Network Emergency Communication Protocol HNEC, Inter-Domain Messaging IDM, Network Disaster Recovery, Routing Protocols, Sensor Network

Abdussalam Nuri Baryun, Khalid Al Begain, David Villa

2013-04-01T23:59:59.000Z

7

Social Network and Communications Institutional Change Principle |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Network and Communications Institutional Change Principle Network and Communications Institutional Change Principle Social Network and Communications Institutional Change Principle October 8, 2013 - 10:59am Addthis Federal agencies can use social networks and communications to spark and reinforce behavior change for meeting sustainability goals. This principle is based on research findings showing that people and institutions often are strongly influenced by the behaviors and expectations of others. Methods The social network and communications behavior change principle involves informing staff about others' sustainability efforts, especially those that are successful. Methods for social networking and communicating include many internal or external media channels, such as websites, blogs, newsletters, and emails.

8

Covert computer and network communications  

Science Conference Proceedings (OSTI)

The ex-filtration of confidential information across communication networks is a challenging problem. It is possible for transmissions to be hidden or masked in such a way to circumvent the security policies of an organization. An objective might be ... Keywords: covert channels, covert storage channels, security, steganography

Robert C. Newman

2007-09-01T23:59:59.000Z

9

Quantum network communication: the butterfly and beyond  

Science Conference Proceedings (OSTI)

We study the problem of k-pair communication (or multiple unicast problem) of quantum information in networks of quantum channels. We consider the asymptotic rates of high fidelity quantum communication between specific sender-receiver pairs. ... Keywords: k-pair communication problem, multiple unicast, network coding, quantum communication, routing

Debbie Leung; Jonathan Oppenheim; Andreas Winter

2010-07-01T23:59:59.000Z

10

Definition: Customer System Communications Network | Open Energy  

Open Energy Info (EERE)

System Communications Network System Communications Network Jump to: navigation, search Dictionary.png Customer System Communications Network The communications network or networks between the customers' premise and the utility, designed to provide two-way communications between customer systems and utility information systems. These networks can utilize wired or wireless connections, and can be utility-owned or provided as services by a third party.[1] Related Terms system References ↑ https://www.smartgrid.gov/category/technology/customer_system_communications_network [[C LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitions|Template:BASEPAGENAME]] Retrieved from "http://en.openei.org/w/index.php?title=Definition:Customer_System_Communications_Network&oldid=480382"

11

PIPELINES AS COMMUNICATION NETWORK LINKS  

SciTech Connect

This report presents the results of an investigation into two methods of using the natural gas pipeline as a communication medium. The work addressed the need to develop secure system monitoring and control techniques between the field and control centers and to robotic devices in the pipeline. In the first method, the pipeline was treated as a microwave waveguide. In the second method, the pipe was treated as a leaky feeder or a multi-ground neutral and the signal was directly injected onto the metal pipe. These methods were tested on existing pipeline loops at UMR and Batelle. The results reported in this report indicate the feasibility of both methods. In addition, a few suitable communication link protocols for this network were analyzed.

Kelvin T. Erickson; Ann Miller; E. Keith Stanek; C.H. Wu; Shari Dunn-Norman

2005-03-14T23:59:59.000Z

12

Definition: Distribution Automation Communications Network | Open Energy  

Open Energy Info (EERE)

Automation Communications Network Automation Communications Network Jump to: navigation, search Dictionary.png Distribution Automation Communications Network A communications network or networks designed to deliver control signals and information between distribution automation devices, and between these devices and utility grid control systems. These networks can utilize wired or wireless connections, and can be utility-owned or provided as services by a third party.[1] Related Terms distribution automation References ↑ https://www.smartgrid.gov/category/technology/distribution_automation_communications_network [[C LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitionssmart grid,smart grid, |Template:BASEPAGENAME]]smart grid,smart grid, Retrieved from

13

Definition: Synchrophasor Communications Network | Open Energy Information  

Open Energy Info (EERE)

Synchrophasor Communications Network Synchrophasor Communications Network Jump to: navigation, search Dictionary.png Synchrophasor Communications Network A communications network to transport the digital information from phasor measurement units (PMUs) to where the data will be used. Typically implemented using a private wide-area network (WAN), this network can be any digital transport system that offers acceptable security and availability. Functional requirements have been developed as part of the North American SynchroPhasor Initiative (NASPI) to provide for flexible, fast, vendor-agnostic, and secure communication of phasor measurements from data collection points to various levels of phasor data concentrators (PDCs) and phasor application use points.[1] Related Terms sustainability, fuel cell, smart grid

14

Definition: Meter Communications Network | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Meter Communications Network Jump to: navigation, search Dictionary.png Meter Communications Network The communications infrastructure that supports two-way delivery of information between smart meters and data collectors or access points. This infrastructure can be wired or wireless, and can be owned by the utility or a third party service provider. This network is sometimes referred to as a "field area network".[1] Related Terms smart grid References ↑ https://www.smartgrid.gov/category/technology/meter_communications_network [[C Like Like You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitions|Template:BASEPAGENAME]] Retrieved from "http://en.openei.org/w/index.php?title=Definition:Meter_Communications_Network&oldid=493063"

15

Effective Protocols for Mobile Communications and Networking  

SciTech Connect

This report examines methods of mobile communications with an emphasis on mobile computing and wireless communications. Many of the advances in communications involve the use of Internet Protocol (IP), Asynchronous Transfer Mode (ATM), and ad hoc network protocols. However, many of the advances in these protocols have been focused on wired communications. Recently much focus has been directed at advancing communication technology in the area of mobile wireless networks. This report discusses various protocols used in mobile communications and proposes a number of extensions to existing protocols. A detailed discussion is also included on desirable protocol characteristics and evaluation criteria. In addition, the report includes a discussion on several network simulation tools that maybe used to evaluate network protocols.

Espinoza, J.; Sholander, P.; Van Leeuwen, B,

1998-12-01T23:59:59.000Z

16

Trends in the development of communication networks: Cognitive networks  

Science Conference Proceedings (OSTI)

One of the main challenges already faced by communication networks is the efficient management of increasing complexity. The recently proposed concept of cognitive network appears as a candidate that can address this issue. In this paper, we survey the ... Keywords: Autonomic networks, Cognition loop, Cognitive networks, Cross-layer, Knowledge representation, Learning, OSI, Protocol stack, Reasoning, Self-aware

Carolina Fortuna; Mihael Mohorcic

2009-06-01T23:59:59.000Z

17

Multiaccess and fading in communication networks  

E-Print Network (OSTI)

Two fundamental issues in the design of wireless communication networks are the interference among multiple users and the time-varying nature of the fading wireless channel. We apply fundamental techniques in information ...

Yeh, Edmund Meng, 1971-

2001-01-01T23:59:59.000Z

18

Switch for serial or parallel communication networks  

DOE Patents (OSTI)

A communication switch apparatus and a method for use in a geographically extensive serial, parallel or hybrid communication network linking a multi-processor or parallel processing system has a very low software processing overhead in order to accommodate random burst of high density data. Associated with each processor is a communication switch. A data source and a data destination, a sensor suite or robot for example, may also be associated with a switch. The configuration of the switches in the network are coordinated through a master processor node and depends on the operational phase of the multi-processor network: data acquisition, data processing, and data exchange. The master processor node passes information on the state to be assumed by each switch to the processor node associated with the switch. The processor node then operates a series of multi-state switches internal to each communication switch. The communication switch does not parse and interpret communication protocol and message routing information. During a data acquisition phase, the communication switch couples sensors producing data to the processor node associated with the switch, to a downlink destination on the communications network, or to both. It also may couple an uplink data source to its processor node. During the data exchange phase, the switch couples its processor node or an uplink data source to a downlink destination (which may include a processor node or a robot), or couples an uplink source to its processor node and its processor node to a downlink destination.

Crosette, Dario B. (DeSoto, TX)

1994-01-01T23:59:59.000Z

19

Energy Harvesting Communication Networks: Optimization and Demonstration  

E-Print Network (OSTI)

of energy. E-CROPS will combine theoret- ical modelling and performance analysis with experimen- tal1 Energy Harvesting Communication Networks: Optimization and Demonstration (The E-CROPS Project of Electrical Engineering, Imperial College London, London, UK 2 Mobile Communications Department, Institut

Uysal-Biyikoglu, Elif

20

Switch for serial or parallel communication networks  

DOE Patents (OSTI)

A communication switch apparatus and a method for use in a geographically extensive serial, parallel or hybrid communication network linking a multi-processor or parallel processing system has a very low software processing overhead in order to accommodate random burst of high density data. Associated with each processor is a communication switch. A data source and a data destination, a sensor suite or robot for example, may also be associated with a switch. The configuration of the switches in the network are coordinated through a master processor node and depends on the operational phase of the multi-processor network: data acquisition, data processing, and data exchange. The master processor node passes information on the state to be assumed by each switch to the processor node associated with the switch. The processor node then operates a series of multi-state switches internal to each communication switch. The communication switch does not parse and interpret communication protocol and message routing information. During a data acquisition phase, the communication switch couples sensors producing data to the processor node associated with the switch, to a downlink destination on the communications network, or to both. It also may couple an uplink data source to its processor node. During the data exchange phase, the switch couples its processor node or an uplink data source to a downlink destination (which may include a processor node or a robot), or couples an uplink source to its processor node and its processor node to a downlink destination. 9 figs.

Crosette, D.B.

1994-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Embodied communication in the distributed network  

Science Conference Proceedings (OSTI)

Through the adaptation of new technologies, the creative industries are proposing new forms of interaction for the distributed network. This paper considers the new media artwork Intimate Transactions as an example of a creative, experimental approach ... Keywords: co-presence, embodied interaction, flow, interaction design, network communication, new media art, telepresence

Jillian Hamilton

2007-09-01T23:59:59.000Z

22

Communication switch for serial and parallel network  

DOE Patents (OSTI)

This is a communication switch apparatus and a method for use in a geographically extensive serial, parallel or hybrid communication network, linking a multiprocessor or parallel processing system. It has a very low software processing overhead and accommodates random burst of high density data. Each processor has a communication switch which may have a data source, data destination, sensor or a robot associated with it. The configuration of the switches are coordinated through a master processor node and depends on the operational phase of the multiprocessor network:data acquisition, data processing and data exchange. The communication system design maximizes data routing while maintaining data integrity which is achieved through the reduction of communication protocol overhead and amplification of signals.

Crosetto, D.B.

1992-01-01T23:59:59.000Z

23

JAMMING COMMUNICATION NETWORKS UNDER COMPLETE ...  

E-Print Network (OSTI)

Most papers on network interdiction are about preventing jam- ... cumulative energy received from all jamming devices exceeds some threshold value E: ?i.

24

Optimization and Control of Communication Networks  

Science Conference Proceedings (OSTI)

Recently, there has been a surge in research activities that utilize the power of recent developments in nonlinear optimization to tackle a wide scope of work in the analysis and design of communication systems, touching every layer of the layered network ...

Mung Chiang; Steven Low

2005-06-01T23:59:59.000Z

25

Communication services for advanced network applications.  

SciTech Connect

Advanced network applications such as remote instrument control, collaborative environments, and remote I/O are distinguished by traditional applications such as videoconferencing by their need to create multiple, heterogeneous flows with different characteristics. For example, a single application may require remote I/O for raw datasets, shared controls for a collaborative analysis system, streaming video for image rendering data, and audio for collaboration. Furthermore, each flow can have different requirements in terms of reliability, network quality of service, security, etc. They argue that new approaches to communication services, protocols, and network architecture are required both to provide high-level abstractions for common flow types and to support user-level management of flow creation and quality. They describe experiences with the development of such applications and communication services.

Bresnahan, J.; Foster, I.; Insley, J.; Toonen, B.; Tuecke, S.

1999-06-10T23:59:59.000Z

26

Incentive Pricing in Multi-Class Communication Networks  

Science Conference Proceedings (OSTI)

We consider a communication network that offers multi-class services to multiple types of traffic. Users choose service classes so as to optimize their own performance. The network associates with each traffic type a nominal service class. Optimal prices ... Keywords: Network pricing, multi-class networks, network control, network design and management, game theory, broadband networking

Ariel Orda; Nahum Shimkin

1997-04-01T23:59:59.000Z

27

Position estimation of transceivers in communication networks  

DOE Patents (OSTI)

This invention provides a system and method using wireless communication interfaces coupled with statistical processing of time-of-flight data to locate by position estimation unknown wireless receivers. Such an invention can be applied in sensor network applications, such as environmental monitoring of water in the soil or chemicals in the air where the position of the network nodes is deemed critical. Moreover, the present invention can be arranged to operate in areas where a Global Positioning System (GPS) is not available, such as inside buildings, caves, and tunnels.

Kent, Claudia A. (Pleasanton, CA); Dowla, Farid (Castro Valley, CA)

2008-06-03T23:59:59.000Z

28

GAS MAIN SENSOR AND COMMUNICATIONS NETWORK SYSTEM  

SciTech Connect

Automatika, Inc. was contracted by the Department of Energy (DOE) and with co-funding from the New York Gas Group (NYGAS), to develop an in-pipe natural gas prototype measurement and wireless communications system for assessing and monitoring distribution networks. A prototype system was built for low-pressure cast-iron mains and tested in a spider- and serial-network configuration in a live network in Long Island with the support of Keyspan Energy, Inc. The prototype unit combined sensors capable of monitoring pressure, flow, humidity, temperature and vibration, which were sampled and combined in data-packages in an in-pipe master-slave architecture to collect data from a distributed spider-arrangement, and in a master-repeater-slave configuration in serial or ladder-network arrangements. It was found that the system was capable of performing all data-sampling and collection as expected, yielding interesting results as to flow-dynamics and vibration-detection. Wireless in-pipe communications were shown to be feasible and valuable data was collected in order to determine how to improve on range and data-quality in the future.

Hagen Schempf, Ph.D.

2003-02-27T23:59:59.000Z

29

Toward in vivo nanoscale communication networks: utilizing an active network architecture  

Science Conference Proceedings (OSTI)

A safe and reliable in vivo nanoscale communication network will be of great benefit for medical diagnosis and monitoring as well as medical implant communication. This review article provides a brief introduction to nanoscale and molecular ... Keywords: active network, in vivo network, molecular communication, molecular motor, nanoscale network, neural coding

Stephen F. Bush

2011-09-01T23:59:59.000Z

30

First-use analysis of communication in a social network  

Science Conference Proceedings (OSTI)

The study of communication activity in social networks is aimed at understanding and promoting communications in groups, organizations and communities. In this paper, we propose a method for the analysis of communication records to extract content-based ... Keywords: e-mail analysis, information propagation, social network

Satoko Itaya; Naoki Yoshinaga; Peter Davis; Rie Tanaka; Taku Konishi; Shinich Doi; Keiji Yamada

2010-10-01T23:59:59.000Z

31

An Underwater Sensor Network with Dual Communications, Sensing, and  

E-Print Network (OSTI)

An Underwater Sensor Network with Dual Communications, Sensing, and Mobility Carrick Detweiller an underwater sensor network with dual communication and sup- port for sensing and mobility. The nodes developed. We describe the hardware details of the underwater sensor node and the communication

Farritor, Shane

32

On cost-effective communication network designing  

E-Print Network (OSTI)

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

Guoqiang Zhang

2009-10-12T23:59:59.000Z

33

A survey on communication networks for electric system automation  

Science Conference Proceedings (OSTI)

In today's competitive electric utility marketplace, reliable and real-time information become the key factor for reliable delivery of power to the end-users, profitability of the electric utility and customer satisfaction. The operational and commercial ... Keywords: Electric system automation, Internet based Virtual Private Network, Power line communication, Satellite communication, WiMAX, Wireless mesh networks, Wireless sensor networks

V. C. Gungor; F. C. Lambert

2006-05-01T23:59:59.000Z

34

GAS MAIN SENSOR AND COMMUNICATIONS NETWORK SYSTEM  

Science Conference Proceedings (OSTI)

Automatika, Inc. was contracted by the Department of Energy (DOE) and with co-funding from the New York Gas Group (NYGAS), to develop an in-pipe natural gas prototype measurement and wireless communications system for assessing and monitoring distribution networks. In Phase II of this three-phase program, an improved prototype system was built for low-pressure cast-iron and high-pressure steel (including a no-blow installation system) mains and tested in a serial-network configuration in a live network in Long Island with the support of Keyspan Energy, Inc. The experiment was carried out in several open-hole excavations over a multi-day period. The prototype units (3 total) combined sensors capable of monitoring pressure, flow, humidity, temperature and vibration, which were sampled and combined in data-packages in an in-pipe master-repeater-slave configuration in serial or ladder-network arrangements. It was verified that the system was capable of performing all data-sampling, data-storage and collection as expected, yielding interesting results as to flow-dynamics and vibration-detection. Wireless in-pipe communications were shown to be feasible and the system was demonstrated to run off in-ground battery- and above-ground solar power. The remote datalogger access and storage-card features were demonstrated and used to log and post-process system data. Real-time data-display on an updated Phase-I GUI was used for in-field demonstration and troubleshooting.

Hagen Schempf

2004-09-30T23:59:59.000Z

35

Communications Security Analysis for Control System Networks: Preliminary Report  

Science Conference Proceedings (OSTI)

Communications capabilities in the control system network are expanding and security issues are becoming more important as the electric power industry migrates from relatively slow, serial communications to high-speed, asynchronous communications. This report surveys current and evolving wired and wireless high-speed communication technologies to create a roadmap for planning control system network upgrades before regulation or equipment obsolescence and reliability concerns become issues. Technologies s...

2007-02-15T23:59:59.000Z

36

Reliable Data Communication and Storage in Underwater Acoustic Networks.  

E-Print Network (OSTI)

??Underwater acoustic communications (UAC) and networking (UAN) are promising paradigms for various oceanic applications. However, acoustic signal transmissions are characterized by long propagation delay, frequency-dependent (more)

Cao, Rui

2011-01-01T23:59:59.000Z

37

Green networking for major components of information communication technology systems  

Science Conference Proceedings (OSTI)

Green Networking can be the way to help reduce carbon emissions by the Information and Communications Technology (ICT) Industry. This paper presents some of the major components of Green Networking and discusses how the carbon footprint of these components ...

Naveen Chilamkurti; Sherali Zeadally; Frank Mentiplay

2009-01-01T23:59:59.000Z

38

The Communication Networks Guidebook for Intelligent Distribution Systems  

Science Conference Proceedings (OSTI)

This report describes communication networks relevant to electric utility applications for utility members. Details to further an understanding of functional and technical capabilities and comparisons of such networks are included. The report also provides a detailed, systematic analysis of issues directly related to the integration, interoperability, and performance of the communication networks for distribution applications. The focus is to better understand the behavior of individual networks, especia...

2010-03-31T23:59:59.000Z

39

A Protocol for Multimedia CDMA Personal Communication Networks  

Science Conference Proceedings (OSTI)

In this paper, a joint CDMA/TDMA protocol has been proposed for integrated video-phone/voice/data traffic in personal communication networks (PCN). The videophone service is implemented according to H.261 standard. The concept of dynamic boundary ... Keywords: CDMA, MAC, multimedia, personal communication networks, protocol

P. Xie; E. Gunawan; B. H. Soong; C. B. Soh

2000-09-01T23:59:59.000Z

40

A survey of communication/networking in Smart Grids  

Science Conference Proceedings (OSTI)

Smart Grid is designed to integrate advanced communication/networking technologies into electrical power grids to make them ''smarter''. Current situation is that most of the blackouts and voltage sags could be prevented if we have better and faster ... Keywords: Communication, Control and management, Networking, Optimization, QoS, Smart Grid

Jingcheng Gao; Yang Xiao; Jing Liu; Wei Liang; C.L. Philip Chen

2012-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

On Nonblocking Folded-Clos Networks in Computer Communication Environments  

E-Print Network (OSTI)

--Folded-Clos networks, also referred to as fat-trees, have been widely used as interconnects in large scale high, and establishes nonblocking conditions. Keywords-Clos Networks; fat-tree; nonblocking; computer communications; I. INTRODUCTION Clos networks and their variations such as folded-Clos (also referred to as fat-trees) have been

Yuan, Xin

42

Collaborative Gain in Resource Sharing Communication Networks  

E-Print Network (OSTI)

We consider a Multi-Hopping communication network of users transmitting information on a shared medium with limited resources, e.g., limited time and limited bandwidth. Users are able to transmit, receive, retrieve and reply information in a collaborative way. We assume that two users collaborate (one acts as a relay for another) only if, as a result of the collaboration, they gain more capacity, save on resources or save power. We perform optimal resource allocation for three problems: 1) maximizing the capacity given limited resource and energy, 2) minimizing the resource usage given capacity and energy and 3) minimizing energy usage given capacity and resources. By comparing the collaboration gain as a function of the channels and available energies, one may decide either to collaborate or not and select a collaborator among candidates. We find the conditions in which acting as relay results in capacity gain, resource or power saving. We show that a significant gain is attained only if the channel energy g...

Akhavan-Astaneh, Saeed

2007-01-01T23:59:59.000Z

43

Communication Reliability in Network on Chip Designs  

E-Print Network (OSTI)

The performance of low latency Network on Chip (NoC) architectures, which incorporate fast bypass paths to reduce communication latency, is limited by crosstalk induced skewing of signal transitions on link wires. As a result of crosstalk interactions between wires, signal transitions belonging to the same flit or bit vector arrive at the destination at different times and are likely to violate setup and hold time constraints for the design. This thesis proposes a two-step technique: TransSync- RecSync, to dynamically eliminate packet errors resulting from inter-bit-line transition skew. The proposed approach adds minimally to router complexity and involves no wire overhead. The actual throughput of NoC designs with asynchronous bypass designs is evaluated and the benefits of augmenting such schemes with the proposed design are studied. The TransSync, TransSync-2-lines and RecSync schemes described here are found to improve the average communication latency by 26%, 20% and 38% respectively in a 7X7 mesh NoC with asynchronous bypass channel. This work also evaluates the bit-error ratio (BER) performance of several existing crosstalk avoidance and error correcting schemes and compares them to that of the proposed schemes. Both TransSync and RecSync scheme are dynamic in nature and can be switched on and off on-the-fly. The proposed schemes can therefore be employed to impart unequal error protection (UEP) against intra-flit skewing on NoC links. In the UEP, a larger fraction of the energy budget is spent in providing protection to those parts of the data being transmitted on the link which have a higher priority, while expending smaller effort in protecting relatively less important parts of the data. This allows us to achieve the prescribed level of performance with lower levels of power. The benefits of the presented technique are illustrated using an H.264 video decoder system-on-chip (SoC) employing NoC architecture. We show that for Akyio test streams transmitted over 3mm long link wires, the power consumption can be reduced by as much as 20% at the cost of an acceptable degradation in average peak signal to noise ratio (PSNR) with UEP.

Kumar, Reeshav

2011-08-01T23:59:59.000Z

44

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING  

E-Print Network (OSTI)

Development and validation of time-series synthesizers of rain attenuation for Ka-band and Q=V-band satellite communication systems

Laurent Castanet; Carlo Riva; Uwe-carsten Fiebig; Max Van De Kamp; Antonio Martellucci

2007-01-01T23:59:59.000Z

45

Capacity Analysis of a Wireless Backhaul for Metering in the Smart Grid  

E-Print Network (OSTI)

the changes for modernizing the electricity grid, reduce peak loads, and meet energy-efficiency targets to smart meters, and load profiles and logs from smart meters to the control center. There are manyCapacity Analysis of a Wireless Backhaul for Metering in the Smart Grid Babak Karimi and Vinod

Namboodiri, Vinod

46

On optical communications networks and wideband network architecture  

Science Conference Proceedings (OSTI)

The optical networks of today are just beginning to realize their abilities to carry a tremendous amount of information in the forms of voice, data and video signals on a single optical fiber. However, many challenges lay ahead as designers and system ... Keywords: Optical networks, Wave division multiplexing and optical switching, Wideband network architecture

K Makki; J Broussard; N Pissinou

2000-05-01T23:59:59.000Z

47

The Communication Networks Guidebook for Intelligent Transmission Systems  

Science Conference Proceedings (OSTI)

A Smart Grid will provide a wide-area view of system performance and health and anticipate events and take action to avoid disruptions or minimize their impact. With these capabilities, utilities can improve reliability and optimize utilization of assets. Robust and highly integrated communications and distributed computing infrastructures will be needed to create a Smart Grid. However, there are numerous communication technologies; and identifying, analyzing, and selecting the right networks to support ...

2009-12-21T23:59:59.000Z

48

Network Communication as a Service-Oriented Capability  

Science Conference Proceedings (OSTI)

In widely distributed systems generally, and in science-oriented Grids in particular, software, CPU time, storage, etc., are treated as"services" -- they can be allocated and used with service guarantees that allows them to be integrated into systems that perform complex tasks. Network communication is currently not a service -- it is provided, in general, as a"best effort" capability with no guarantees and only statistical predictability. In order for Grids (and most types of systems with widely distributed components) to be successful in performing the sustained, complex tasks of large-scale science -- e.g., the multi-disciplinary simulation of next generation climate modeling and management and analysis of the petabytes of data that will come from the next generation of scientific instrument (which is very soon for the LHC at CERN) -- networks must provide communication capability that is service-oriented: That is it must be configurable, schedulable, predictable, and reliable. In order to accomplish this, the research and education network community is undertaking a strategy that involves changes in network architecture to support multiple classes of service; development and deployment of service-oriented communication services, and; monitoring and reporting in a form that is directly useful to the application-oriented system so that it may adapt to communications failures. In this paper we describe ESnet's approach to each of these -- an approach that is part of an international community effort to have intra-distributed system communication be based on a service-oriented capability.

Johnston, William; Johnston, William; Metzger, Joe; Collins, Michael; Burrescia, Joseph; Dart, Eli; Gagliardi, Jim; Guok, Chin; Oberman, Kevin; O'Conner, Mike

2008-01-08T23:59:59.000Z

49

Link power coordination for energy conservation in complex communication networks  

E-Print Network (OSTI)

Communication networks consume huge, and rapidly growing, amount of energy. However, a lot of the energy consumption is wasted due to the lack of global link power coordination in these complex systems. This paper proposes several link power coordination schemes to achieve energy-efficient routing by progressively putting some links into energy saving mode and hence aggregating traffic during periods of low traffic load. We show that the achievable energy savings not only depend on the link power coordination schemes, but also on the network topologies. In the random network, there is no scheme that can significantly outperform others. In the scale-free network, when the largest betweenness first (LBF) scheme is used, phase transition of the networks' transmission capacities during the traffic cooling down phase is observed. Motivated by this, a hybrid link power coordination scheme is proposed to significantly reduce the energy consumption in the scale-free network. In a real Internet Service Provider (ISP)'...

Zhang, Guo-Qiang

2010-01-01T23:59:59.000Z

50

Roadmap for Testing and Validation of Electric Vehicle Communication Standards  

SciTech Connect

Vehicle to grid communication standards are critical to the charge management and interoperability among plug-in electric vehicles (PEVs), charging stations and utility providers. The Society of Automobile Engineers (SAE), International Organization for Standardization (ISO), International Electrotechnical Commission (IEC) and the ZigBee Alliance are developing requirements for communication messages and protocols. While interoperability standards development has been in progress for more than two years, no definitive guidelines are available for the automobile manufacturers, charging station manufacturers or utility backhaul network systems. At present, there is a wide range of proprietary communication options developed and supported in the industry. Recent work by the Electric Power Research Institute (EPRI), in collaboration with SAE and automobile manufacturers, has identified performance requirements and developed a test plan based on possible communication pathways using power line communication (PLC). Though the communication pathways and power line communication technology options are identified, much work needs to be done in developing application software and testing of communication modules before these can be deployed in production vehicles. This paper presents a roadmap and results from testing power line communication modules developed to meet the requirements of SAE J2847/1 standard.

Pratt, Richard M.; Tuffner, Francis K.; Gowri, Krishnan

2012-07-12T23:59:59.000Z

51

E-print Network: Research Communications for Scientists and Engineers  

Office of Scientific and Technical Information (OSTI)

E-print Web Log E-print Web Log E-print Network E-print Network About Search Browse by Discipline Find Scientific Societies Receive E-print Alerts Contact Us Help Home Site Map OSTI DOE For Immediate Release January 10, 2005 For more information, contact: Alison Buckholtz, SPARC, alison@arl.org Susan Tackett, OSTI, tacketts@osti.gov DOE/OSTI's E-PRINT NETWORK SELECTED AS SPARC PARTNER Provides Research Communications and Full-Text Searching of Science Websites and Databases Washington, DC -SPARC (the Scholarly Publishing and Academic Resources Coalition) today announced that the E-print Network, a free service of the U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), has been chosen as a SPARC Scientific Communities partner. The selection recognizes the contribution of the E-print Network to expanded availability and use of open-access scientific and technical research on the Internet.

52

A new communication paradigm for mobile TV over cellular network Dr. Hongxiang Li  

E-Print Network (OSTI)

A new communication paradigm for mobile TV over cellular network Dr. Hongxiang Li Electrical terrestrial TV network and propose a new mobile TV communication paradigm that is radically different from and communication theory (i.e., Network Coding and Dirty Paper Coding) in the new mobile TV system design. Despite

53

On the use of ultrasonic waves as a communications medium in biosensor networks  

Science Conference Proceedings (OSTI)

In this paper, the problem ofwireless communications in human tissue is addressed for biosensor network applications. Today's offered solutions involve the usage of RF communication systems, which have shown to provide adequate performance to ensure ... Keywords: biosensor networks, body area networks, channel model, implanted sensors, ultrasonic communications

Yiannis Davilis; Antonis Kalis; Antonis Ifantis

2010-05-01T23:59:59.000Z

54

Defenses against Covert-Communications in Multimedia and Sensor Networks  

E-Print Network (OSTI)

Steganography and covert-communications represent a great and real threat today more than ever due to the evolution of modern communications. This doctoral work proposes defenses against such covert-communication techniques in two threatening but underdeveloped domains. Indeed, this work focuses on the novel problem of visual sensor network steganalysis but also proposes one of the first solutions against video steganography. The first part of the dissertation looks at covert-communications in videos. The contribution of this study resides in the combination of image processing using motion vector interpolation and non-traditional detection theory to obtain better results in identifying the presence of embedded messages in videos compared to what existing still-image steganalytic solutions would offer. The proposed algorithm called MoViSteg utilizes the specifics of video, as a whole and not as a series of images, to decide on the occurrence of steganography. Contrary to other solutions, MoViSteg is a video-specific algorithm, and not a repetitive still-image steganalysis, and allows for detection of embedding in partially corrupted sequences. This dissertation also lays the foundation for the novel study of visual sensor network steganalysis. We develop three different steganalytic solutions to the problem of covert-communications in visual sensor networks. Because of the inadequacy of the existing steganalytic solutions present in the current research literature, we introduce the novel concept of preventative steganalysis, which aims at discouraging potential steganographic attacks. We propose a set of solutions with active and passive warden scenarii using the material made available by the network. To quantify the efficiency of the preventative steganalysis, a new measure for evaluating the risk of steganography is proposed: the embedding potential which relies on the uncertainty of the images pixel values prone to corruption.

Jainsky, Julien Sebastien 1981-

2012-12-01T23:59:59.000Z

55

SECURITY AND COMMUNICATION NETWORKS Security Comm. Networks. (2009)  

E-Print Network (OSTI)

in fiber-optics continuous- variable quantum key distribution. Physical Review 2005; 72: 050303(R). 37 and quantum cryptography services in optical burst switching networks Yuhua Chen1, , Pramode K. Verma2 University, Stillwater, OK 74078, U.S.A. Summary Optical burst switching (OBS) is the most promising optical

Kak, Subhash

56

Challenges for Efficient Communication in Underwater Acoustic Sensor Networks  

E-Print Network (OSTI)

Abstract Ocean bottom sensor nodes can be used for oceanographic data collection, pollution monitoring, offshore exploration and tactical surveillance applications. Moreover, Unmanned or Autonomous Underwater Vehicles (UUVs, AUVs), equipped with sensors, will find application in exploration of natural undersea resources and gathering of scientific data in collaborative monitoring missions. Underwater acoustic networking is the enabling technology for these applications. Underwater Networks consist of a variable number of sensors and vehicles that are deployed to perform collaborative monitoring tasks over a given area. In this paper, several fundamental key aspects of underwater acoustic communications are investigated. Different architectures for two-dimensional and three-dimensional underwater sensor networks are discussed, and the underwater channel is characterized. The main challenges for the development of efficient networking solutions posed by the underwater environment are detailed at all layers of the protocol stack. Furthermore, open research issues are discussed and possible solution approaches are outlined. I.

Ian F. Akyildiz; Dario Pompili; Tommaso Melodia

2004-01-01T23:59:59.000Z

57

Communication synthesis of networks-on-chip (NoC)  

E-Print Network (OSTI)

The emergence of networks-on-chip (NoC) as the communication infrastructure solution for complex multi-core SoCs presents communication synthesis challenges. This dissertation addresses the design and run-time management aspects of communication synthesis. Design reuse and the infeasibility of Intellectual Property (IP) core interface redesign, requires the development of a Core-Network Interface (CNI) which allows them to communicate over the on-chip network. The absence of intelligence amongst the NoC components, entails the introduction of a CNI capable of not only providing basic packetization and depacketization, but also other essential services such as reliability, power management, reconguration and test support. A generic CNI architecture providing these services for NoCs is proposed and evaluated in this dissertation. Rising on-chip communication power costs and reliability concerns due to these, motivate the development of a peak power management technique that is both scalable to dierent NoCs and adaptable to varying trac congurations. A scalable and adaptable peak power management technique - SAPP - is proposed and demonstrated. Latency and throughput improvements observed with SAPP demonstrate its superiority over existing techniques. Increasing design complexity make prediction of design lifetimes dicult. Post SoC deployment, an on-line health monitoring scheme, is essential to maintain con- dence in the correct operation of on-chip cores. The rising design complexity and IP core test costs makes non-concurrent testing of the IP cores infeasible. An on-line scheme capable of managing IP core test in the presence of executing applications is essential. Such a scheme ensures application performance and system power budgets are eciently managed. This dissertation proposes Concurrent On-Line Test (COLT) for NoC-based systems and demonstrates how a robust implementation of COLT using a Test Infrastructure-IP (TI-IP) can be used to maintain condence in the correct operation of the SoC.

Bhojwani, Praveen Sunder

2007-12-01T23:59:59.000Z

58

Communication synthesis of networks-on-chip (noc)  

E-Print Network (OSTI)

The emergence of networks-on-chip (NoC) as the communication infrastructure solution for complex multi-core SoCs presents communication synthesis challenges. This dissertation addresses the design and run-time management aspects of communication synthesis. Design reuse and the infeasibility of Intellectual Property (IP) core interface redesign, requires the development of a Core-Network Interface (CNI) which allows them to communicate over the on-chip network. The absence of intelligence amongst the NoC components, entails the introduction of a CNI capable of not only providing basic packetization and depacketization, but also other essential services such as reliability, power management, reconguration and test support. A generic CNI architecture providing these services for NoCs is proposed and evaluated in this dissertation. Rising on-chip communication power costs and reliability concerns due to these, motivate the development of a peak power management technique that is both scalable to dierent NoCs and adaptable to varying trac congurations. A scalable and adaptable peak power management technique - SAPP - is proposed and demonstrated. Latency and throughput improvements observed with SAPP demonstrate its superiority over existing techniques. Increasing design complexity make prediction of design lifetimes dicult. Post SoC deployment, an on-line health monitoring scheme, is essential to maintain con- dence in the correct operation of on-chip cores. The rising design complexity and IP core test costs makes non-concurrent testing of the IP cores infeasible. An on-line scheme capable of managing IP core test in the presence of executing applications is essential. Such a scheme ensures application performance and system power budgets are eciently managed. This dissertation proposes Concurrent On-Line Test (COLT) for NoC-based systems and demonstrates how a robust implementation of COLT using a Test Infrastructure-IP (TI-IP) can be used to maintain condence in the correct operation of the SoC.

Bhojwani, Praveen Sunder

2007-12-01T23:59:59.000Z

59

Wireless Communications and Networking Technologies for Smart Grid: Paradigms and Challenges  

E-Print Network (OSTI)

Smart grid, regarded as the next generation power grid, uses two-way flows of electricity and information to create a widely distributed automated energy delivery network. In this work we present our vision on smart grid from the perspective of wireless communications and networking technologies. We present wireless communication and networking paradigms for four typical scenarios in the future smart grid and also point out the research challenges of the wireless communication and networking technologies used in smart grid

Fang, Xi; Xue, Guoliang

2011-01-01T23:59:59.000Z

60

The Role of Communication and Trust in Global Virtual Teams: A Social Network Perspective  

Science Conference Proceedings (OSTI)

The importance of communication and trust in the context of global virtual teams has been noted and reiterated in the information systems (IS) literature. Yet precisely how communication and trust influence certain outcomes within virtual teams remains ... Keywords: Communication, Distributed Teams, Global Virtual Teams, Hybrid Teams, Individual Performance, Mediation, Networked Individualism, Social Network Analysis, Trust

Saonee Sarker; Manju Ahuja; Suprateek Sarker; Sarah Kirkeby

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Design of QoS in Intelligent Communication Environments Based on Neural Network  

Science Conference Proceedings (OSTI)

Due to the latest developments in communication and computing, smart services and applications are being deployed for various applications such as entertainment, health care, smart homes, security and surveillance. In intelligent communication environments, ... Keywords: Congestion control, High-speed computer network, Intelligent communication environments, Neural network

N. Xiong; L. T. Yang; Y. Yang; J. H. Park; G. Wei

2011-01-01T23:59:59.000Z

62

An approach for location area planning in a personal communication services network (PCSN)  

Science Conference Proceedings (OSTI)

This paper deals with an approach for planning location areas (LAs) in a personal communication services network (PCSN) to be overlaid on an existing wired network. Given the average speed of mobile terminals, the number of mobile switching centers (MSCs), ... Keywords: CMRs, Call-to-mobility ratios, LA, LU, PCSN, cost optimization, heuristic, location area, location update, paging, personal communication services network

P. S. Bhattacharjee; D. Saha; A. Mukherjee

2004-07-01T23:59:59.000Z

63

A peer-to-peer overlay approach for emergency mobile ad hoc network based multimedia communications  

Science Conference Proceedings (OSTI)

Overlay networks are located on top of the physical network and are generally favored for the implementation of peer-to-peer (P2P) networks providing services such as voice over IP (VoIP) communications. The operation of the overlay network results in ... Keywords: ad hoc networking, emergency, overlays, peer-to-peer

Grant P. Millar; Tipu A. Ramrekha; Christos Politis

2009-09-01T23:59:59.000Z

64

Why Mobile Wireless Carriers Share Networks and Services Provisioning  

Science Conference Proceedings (OSTI)

This paper provides a theory that empirically examines why mobile wireless carriers share the costs of building networks and provisioning wireless services. Of the cost drivers of network operators, the most influential on the industry's dynamics are ... Keywords: Active and Passive Infrastructure, Backhaul, Coverage, Network Sharing, Next-Generation Networks, Spectrum, Wireless Services Provisioning

Hemant K. Sabat

2010-07-01T23:59:59.000Z

65

MAC protocols over wireless mesh networks: problems and perspective  

Science Conference Proceedings (OSTI)

The wireless mesh network (WMN) has been an emerging technology in recent years. Because the transmission medium used in networking backhaul access points (APs) is radio, the wireless mesh network is not only easy and cost effective in deployment, but ... Keywords: Coordinated distributed scheduling, IEEE 802.11, IEEE 802.16, MAC, TDMA, Wireless mesh networks (WMNs)

V. Loscr?

2008-03-01T23:59:59.000Z

66

Communication network modeling for simulation of wide area monitoring and control applications in power systems.  

E-Print Network (OSTI)

??This thesis has mainly focused on investigating the effect of communication network on the power system operation. The main objective of this research has been (more)

MUDIYANSELAGE, SARANGA D. EDIRISINGHE DISSANAYAKE TENNAKOON

2013-01-01T23:59:59.000Z

67

Impact of communication infrastructure on forwarding in pocket switched networks  

E-Print Network (OSTI)

Recently, it has been established on multiple experimental data sets that human contact processes exhibit heavy-tailed inter-event distributions. This characteristic makes it difficult to transport data with a finite transfer time in a network of mobile devices, relying on opportunistic contacts only. Using various experimental data sets, we analyze how different types of communication infrastructure impact the feasibility of data transfers among mobile devices. The first striking result is that the heavy tailed nature of the contact processes persists after infrastructure is introduced. We establish experimentally that infrastructure improves significantly multiple opportunistic contact properties, relevant to opportunistic forwarding algorithms. We discuss how infrastructure can be used to design simpler and more efficient (in terms of delay and number of hops) opportunistic forwarding algorithms. In addition to this, for the first time in a study like this, the communication pattern of nodes is taken into account in the analysis. We also show that node pairs that have a real-life history of communication have contact properties that are better for opportunistic message forwarding to each other than what other node pairs have.

Anders Lindgren; Christophe Diot; James Scott

2006-01-01T23:59:59.000Z

68

Exponential random graph modeling of communication networks to understand organizational crisis  

Science Conference Proceedings (OSTI)

In recent social network studies, exponential random graph models have been used comprehensively to model global social network structure as a function of their local features. In this study, we describe the exponential random graph models and demonstrate ... Keywords: email communications, exponential random graph models, organizational disintegration, p* models, social networks, statistical models for social networks

Jafar Hamra; Shahadat Uddin; Liaquat Hossain

2011-05-01T23:59:59.000Z

69

The DRL Underwater Sensor Network: Supporting Dual Communications, Sensing, and Mobility  

E-Print Network (OSTI)

The DRL Underwater Sensor Network: Supporting Dual Communications, Sensing, and Mobility Iuliu Vasilescu, Carrick Detweiler and Daniela Rus We propose to demonstrate the underwater sensor network are anchored with weights and form a static underwater network. This network self-localizes a range based 3D

Farritor, Shane

70

Increasing capacity of baseband digital data communication networks  

DOE Patents (OSTI)

This invention provides broadband network capabilities for baseband digital collision detection transceiver equipment for communication between a plurality of data stations by affording simultaneous transmission of multiple channels over a broadband pass transmission link such as a coaxial cable. Thus, a fundamental carrier wave is transmitted on said link, received at local data stations and used to detect signals on different baseband channels for reception. For transmission the carrier wave typically is used for segregating a plurality of at least two transmission channels into typically single sideband upper and lower pass bands of baseband bandwidth capability adequately separated with guard bands to permit simple separation for receiving by means of pass band filters, etc.

Frankel, Robert S. (Centereach, NY); Herman, Alexander (Hertzelia, IL)

1985-01-01T23:59:59.000Z

71

Cellular Controlled Short-Range Communication for Cooperative P2P Networking  

Science Conference Proceedings (OSTI)

This article advocates a novel communication architecture and associated collaborative framework for future wireless communication systems. In contrast to the dominating cellular architecture and the upcoming peer-to-peer architecture, the new approach ... Keywords: Energy efficiency, Medium access control, Peer-to-peer networking, Wireless cooperative networking

Frank H. Fitzek; Marcos Katz; Qi Zhang

2009-01-01T23:59:59.000Z

72

Simulator for PROSIMOS (priority communications for critical situations on mobile networks) service  

Science Conference Proceedings (OSTI)

Public Mobile Networks (PMN) are at the very heart of nowadays communications. They are not only used by individuals, but also by a large number of Agencies committed to Security and Safety. This will be even more common in near future, when cities become ... Keywords: EMSOA enabler technology, business models, priority communications, wireless emergency communications

Roberto Gimenez; Inmaculada Luengo; Anna Mereu; Diego Gimenez; Rosa Ana Casar; Judith Pertejo; Salvador Daz; Jose F. Monserrat; Vicente Osa; Javier Herrera; Maria Amor Ortega; Iigo Arizaga

2010-12-01T23:59:59.000Z

73

Energy-aware real-time communication in wireless ad-hoc micro sensors network  

Science Conference Proceedings (OSTI)

Perfect functioning not only at hardware level but also at software level design is indispensable to quench the thirst of an ideal real time communication. From software perspective, in the timeless sensitive communication context, Real-Time Operating ... Keywords: energy awareness, real-time communication, real-time operating system, sensor network

Sohail Jabbar; Abid Ali Minhas

2009-12-01T23:59:59.000Z

74

Early History of Networks Basis for Modern Communication  

E-Print Network (OSTI)

HA.1 Internet history and architecture HA.2 PSTN history and architecture HA.3 SCADA networks overview HA.4 Other networks

James P. G. Sterbenz; James P. G. Sterbenz; James P. G. Sterbenz; James P. G. Sterbenz; James P. G. Sterbenz

2010-01-01T23:59:59.000Z

75

Network Communication as a Service-Oriented Capability  

E-Print Network (OSTI)

21] Measuring Circuit Based Networks, Joe Metzger, ESnet.http://www.es.net/pub/esnet- doc/index.html#JM021307 [22] ESnet Network Measurements, Joe Metzger,

Johnston, William

2008-01-01T23:59:59.000Z

76

Microsoft Word - Johnston.IOS.Network Communication as a Service...  

NLE Websites -- All DOE Office Websites (Extended Search)

diagnostic transparency, etc. * Robustness and stability (network reliability) are essential. Large-scale investment in science facilities and experiments makes network...

77

Architecture of Wireless Multimedia Mesh Network Nodes for Longwall Coal Mine Automation  

Science Conference Proceedings (OSTI)

Wireless multimedia mesh network is used for longwall coal mine face to transmit signal of data, voice and video in real time with the development of modern coal mine. The performance of the backhaul network especially its throughput is the essential ... Keywords: architecturet, mesh network nodes, longwall coal mine, 3-radio

Xiaolong Feng; Jiansheng Qian

2010-06-01T23:59:59.000Z

78

The design of a transceiver for packet video communication on an integrated services network  

Science Conference Proceedings (OSTI)

This article describes the architecture of a special Packet Video Transceiver, which is appropriate for the communication of broadcast television signals between two stations of an Integrated Services Network. The system performs line processing and ...

A. S. Andreatos; E. N. Protonotarios; G. De Grandi

1993-10-01T23:59:59.000Z

79

The use of MIMO technologies in wireless communication networks  

Science Conference Proceedings (OSTI)

This paper provides a detailed picture on computer networks and especially on wireless networks, focusing on specific characteristics of wireless systems. By using MIMO technology (Multiple Input Multiple Output), network logon ca be realized at distances ... Keywords: IEEE standards, MIMO technology, routers, wireless networks

Marius-Constantin O. S. Popescu; Nikos E. Mastorakis

2009-12-01T23:59:59.000Z

80

Sparse Multichannel Estimation Algorithm for Cooperative Underwater Acoustic Communication Networks  

E-Print Network (OSTI)

Introduction: Cooperative Underwater Acoustic Communicationsgain for wireless and underwater network in interference-

Richard, Nick; Mitra, Urbasi

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Resilience and survivability in communication networks: Strategies, principles, and survey of disciplines  

Science Conference Proceedings (OSTI)

The Internet has become essential to all aspects of modern life, and thus the consequences of network disruption have become increasingly severe. It is widely recognised that the Internet is not sufficiently resilient, survivable, and dependable, and ... Keywords: Availability, Communication network, Critical infrastructure, Defence, Defense, Dependability, Detection, Diagnosis, Disruption tolerance, Fault tolerance, Future Internet resilience, Metrics, Performability, Recovery, Refinement, Reliability, Remediation, Restoration, Security, Survivability

James P. G. Sterbenz; David Hutchison; Egemen K. etinkaya; Abdul Jabbar; Justin P. Rohrer; Marcus Schller; Paul Smith

2010-06-01T23:59:59.000Z

82

Analysis and evaluation of Secos, a protocol for energy efficient and secure communication in sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are increasingly being used in applications where the communication between nodes needs to be protected from eavesdropping and tampering. Such protection is typically provided using techniques from symmetric key cryptography. ... Keywords: Energy efficient key distribution, Key management, Key refreshment, Sensor network security, Symmetric cryptography

Issa Khalil; Saurabh Bagchi; Ness Shroff

2007-04-01T23:59:59.000Z

83

Communication Delay in Wormhole-Switched Tori Networks under Bursty Workloads  

Science Conference Proceedings (OSTI)

Workloads generated by the real-world parallel applications that are executed on a multicomputer have a strong effect on the performance of its interconnection networkthe hardware fabric supporting communication among individual processors. Existing ... Keywords: interconnection networks, message latency, multicomputers, multimedia applications, performance modeling/analysis

G. Min; M. Ould-khaoua

2003-08-01T23:59:59.000Z

84

Line-plane broadcasting in a data communications network of a parallel computer  

DOE Patents (OSTI)

Methods, apparatus, and products are disclosed for line-plane broadcasting in a data communications network of a parallel computer, the parallel computer comprising a plurality of compute nodes connected together through the network, the network optimized for point to point data communications and characterized by at least a first dimension, a second dimension, and a third dimension, that include: initiating, by a broadcasting compute node, a broadcast operation, including sending a message to all of the compute nodes along an axis of the first dimension for the network; sending, by each compute node along the axis of the first dimension, the message to all of the compute nodes along an axis of the second dimension for the network; and sending, by each compute node along the axis of the second dimension, the message to all of the compute nodes along an axis of the third dimension for the network.

Archer, Charles J. (Rochester, MN); Berg, Jeremy E. (Rochester, MN); Blocksome, Michael A. (Rochester, MN); Smith, Brian E. (Rochester, MN)

2010-11-23T23:59:59.000Z

85

Towards a Metric for Communication Network Vulnerability to ...  

Science Conference Proceedings (OSTI)

... power law model where the value of a network is ... between the value function and the critical subset of ... a backup one), and the attacker has a budget ...

2012-06-07T23:59:59.000Z

86

Wireless communication network architecture for the smart grid applications.  

E-Print Network (OSTI)

??Masters Research - Master of Philosophy (MPhil) Smart grid is a novel initiative in the power electric distribution network that aims to provide an intelligent, (more)

Castellanos, German

2012-01-01T23:59:59.000Z

87

About efficiency in wireless communication frameworks on vehicular networks  

Science Conference Proceedings (OSTI)

Nowadays, the Intelligent Transport Systems (ITS) attract many attentions. ITS applications would indeed increase the road safety and the transport efficiency, limit the impact of the vehicles on the environment, improve the overall productivity... However, ... Keywords: ITS, VANET, distributed framework, dynamic ad hoc networks, embedded architecture, road experiments, vehicular networks

Bertrand Ducourthial

2007-08-01T23:59:59.000Z

88

Network-Centric Quantum Communications with Application to Critical Infrastructure Protection  

E-Print Network (OSTI)

Network-centric quantum communications (NQC) - a new, scalable instantiation of quantum cryptography providing key management with forward security for lightweight encryption, authentication and digital signatures in optical networks - is briefly described. Results from a multi-node experimental test-bed utilizing integrated photonics quantum communications components, known as QKarDs, include: quantum identification; verifiable quantum secret sharing; multi-party authenticated key establishment, including group keying; and single-fiber quantum-secured communications that can be applied as a security retrofit/upgrade to existing optical fiber installations. A demonstration that NQC meets the challenging simultaneous latency and security requirements of electric grid control communications, which cannot be met without compromises using conventional cryptography, is described.

Richard J. Hughes; Jane E. Nordholt; Kevin P. McCabe; Raymond T. Newell; Charles G. Peterson; Rolando D. Somma

2013-05-01T23:59:59.000Z

89

Temporal motifs reveal homophily, gender-specific patterns and group talk in mobile communication networks  

E-Print Network (OSTI)

Electronic communication records provide detailed information about temporal aspects of human interaction. Previous studies have shown that individuals' communication patterns have complex temporal structure, and that this structure has system-wide effects. In this paper we use mobile phone records to show that interaction patterns involving multiple individuals have non-trivial temporal structure that cannot be deduced from a network presentation where only interaction frequencies are taken into account. We apply a recently introduced method, temporal motifs, to identify interaction patterns in a temporal network where nodes have additional attributes such as gender and age. We then develop a null model that allows identifying differences between various types of nodes so that these differences are independent of the network based on interaction frequencies. We find gender-related differences in communication patters, and show the existence of temporal homophily, the tendency of similar individuals to partic...

Kovanen, Lauri; Kertsz, Jnos; Saramki, Jari

2013-01-01T23:59:59.000Z

90

Frontal Rainfall Observation by a Commercial Microwave Communication Network  

Science Conference Proceedings (OSTI)

A novel approach for reconstruction of rainfall spatialtemporal dynamics from a wireless microwave network is presented. It employs a stochastic spacetime model based on a rainfall advection model, assimilated using a Kalman filter. The ...

Artem Zinevich; Hagit Messer; Pinhas Alpert

2009-07-01T23:59:59.000Z

91

Design considerations for a fiber optic communications network for power systems  

Science Conference Proceedings (OSTI)

The design of a fiber optic communication network for monitoring and control in power systems is discussed. It is shown that by appropriate choice of protocols, a fault-tolerant system can be built that operates in any arbitrary configuration. Since the network is based on fiber optics, it can be made fast enough for substation monitoring and control. In this application, a relatively small number of cables is required to implement a high reliability system. The network can also be used for distribution automation. In this application the network is required to reach all parts of the power system, and the fiber cable itself becomes a significant fraction of the cost of communications. However, since many applications can be supported at once, the cost per function can be reasonable.

Kirkham, H.; Johnston, A.R. [Jet Propulsion Lab., Pasadena, CA (United States); Allen, G.D. [American Electric Power Service Corp., Columbus, OH (United States)

1993-08-01T23:59:59.000Z

92

Deployable aerial communication networks: challenges for futuristic applications  

Science Conference Proceedings (OSTI)

Aerial (or airborne) telecommunications have been investigated for three decades through the design and the evaluation of stratospheric platforms able to offer multiple types of wireless services. More recently though, a wide range of lower altitude ... Keywords: aerial networks, high altitude platforms, low altitude platforms, unmanned aerial vehicles

Laurent Reynaud; Tinku Rasheed

2012-10-01T23:59:59.000Z

93

Study of location management for next generation personal communication networks  

Science Conference Proceedings (OSTI)

The main target of location management is to maintain location of users while minimizing the system operation. The process consists of location update, paging, and database consideration. The location update and paging manages the user-network interaction ... Keywords: centralized database (CDB), distributed database (DDB), location area scheme, location update, timer-based update strategy, velocity paging (VP)

Teerapat Sanguankotchakorn; Panuvit Wibullanon

2005-03-01T23:59:59.000Z

94

Bounding Communication Energy Overhead in Parallel Networks with Power-Delay Scalability  

Science Conference Proceedings (OSTI)

We propose the energy scalability and power-delay product scalability as new metrics for calculating and estimating boundaries on the energy overhead of parallel processing systems. Because both properties consider network topology and the algorithm ... Keywords: energy overhead, communication overhead, energy scalability, power-delay scalability

James S. Tandon; Steven E. Butner

2008-12-01T23:59:59.000Z

95

Locating hardware faults in a data communications network of a parallel computer  

DOE Patents (OSTI)

Hardware faults location in a data communications network of a parallel computer. Such a parallel computer includes a plurality of compute nodes and a data communications network that couples the compute nodes for data communications and organizes the compute node as a tree. Locating hardware faults includes identifying a next compute node as a parent node and a root of a parent test tree, identifying for each child compute node of the parent node a child test tree having the child compute node as root, running a same test suite on the parent test tree and each child test tree, and identifying the parent compute node as having a defective link connected from the parent compute node to a child compute node if the test suite fails on the parent test tree and succeeds on all the child test trees.

Archer, Charles J. (Rochester, MN); Megerian, Mark G. (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian E. (Rochester, MN)

2010-01-12T23:59:59.000Z

96

Follow-up Review of Control and Accountability of Emergency Communication Network Equipment, INS-L-12-01  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Control and Control and Accountability of Emergency Communication Network Equipment INS-L-12-01 December 2011 Department of Energy Washington, DC 20585 December 21, 2011 MEMORANDUM FOR THE ASSOCIATE ADMINISTRATOR FOR EMERGENCY OPERATIONS FROM: Sandra D. Bruce Assistant Inspector General for Inspections Office of Inspector General SUBJECT: INFORMATION: Inspection Report on "Follow-up Review of Control and Accountability of Emergency Communication Network Equipment" BACKGROUND The Department of Energy's (Department) Emergency Communications Network (ECN) mission is to enable the exchange of classified and unclassified voice, data and video capabilities during national or Department emergencies. ECN connects approximately 80 remote Department sites

97

Design and fabrication of ring networks for high-speed communications between computers (multiprocessing systems)  

SciTech Connect

The results are presented of a design study of several possible implementations of a multinode pierce-type ring communications network. Using commercially available components, one ECL and two different TTL implementations were compared on the basis of performance (maximum system clock rate) and fabrication cost per node for a large ring. The ECL implementation was demonstrated to have a factor of nine better performance than the LS-TTL implementation, for a cost increase of only a few percent. A demonstration five-node ring network was then fabricated and tested; the performance results confirm the performance estimates. 16 references.

Gilbert, B.K.; Schwab, D.J.; Kinter, T.M.

1983-01-01T23:59:59.000Z

98

Microsoft Word - Johnston.IOS.Network Communication as a Service-Oriented Capability.5.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Communication as a Service-Oriented Communication as a Service-Oriented Capability William JOHNSTON, Joe METZGER, Mike O'CONNOR, Michael COLLINS, Joseph BURRESCIA, Eli DART, Jim GAGLIARDI, Chin GUOK, and Kevin OBERMAN ESnet, Lawrence Berkeley National Laboratory Abstract. In widely distributed systems generally, and in science-oriented Grids in particular, software, CPU time, storage, etc., are treated as "services" - they can be allocated and used with service guarantees that allows them to be integrated into systems that perform complex tasks. Network communication is currently not a service - it is provided, in general, as a "best effort" capability with no guarantees and only statistical predictability. In order for Grids (and most types of systems with widely

99

JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 9, NO. 4, DECEMBER 2007 1 Energy-Efficiency and Transmission Strategy Selection in  

E-Print Network (OSTI)

for the same throughput and bit error rate (BER) target. However, concerning the analysis of energy efficiency information. Energy analysis on cooperative MIMO in sensJOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 9, NO. 4, DECEMBER 2007 1 Energy

Dai, Huaiyu

100

Biometric methods for secure communications in body sensor networks: resource-efficient key management and signal-level data scrambling  

Science Conference Proceedings (OSTI)

As electronic communications become more prevalent, mobile and universal, the threats of data compromises also accordingly loom larger. In the context of a body sensor network (BSN), which permits pervasive monitoring of potentially sensitive medical ...

Francis Minhthang Bui; Dimitrios Hatzinakos

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

On improving communication in emergency response at network and organizational levels  

E-Print Network (OSTI)

A variety of communication technologies have been deployedto a good choice of communication technology. This effortincorporates communication technology and organizational

Dilmaghani, Raheleh B.

2010-01-01T23:59:59.000Z

102

Field Area Network Demo - October 2013 Vendor Forum Presentations (Palo Alto)  

Science Conference Proceedings (OSTI)

The field area network (FAN) concept is emerging as a ubiquitous, high-performance, secure, reliable network providing "last mile" backhaul service for distribution supervisory control and data acquisition (SCADA) and advanced metering infrastructure (AMI) systems, as well as network access services for advanced distribution management and automation, distributed energy resources, and any future smart grid applications requiring connectivity from within and beyond the distribution ...

2013-11-13T23:59:59.000Z

103

SECURITY AND COMMUNICATION NETWORKS Security Comm. Networks. 2009; 2:546554  

E-Print Network (OSTI)

in fiber-optics continuous- variable quantum key distribution. Physical Review 2005; 72: 050303(R). 37 framework for integrated classical and quantum cryptography services in optical burst switching networks of Computer Science, Oklahoma State University, Stillwater, OK 74078, U.S.A. Summary Optical burst switching

Kak, Subhash

104

Effects of Spatial and Temporal Heterogeneity of Channel Bandwidth on Performance of Individual Messages in Heterogeneous Communication Networks  

Science Conference Proceedings (OSTI)

Channel bandwidth available for a message on a communication network varies with time and link. This variation (heterogeneity) can have a significant effect on performance of an individual message and also that of the network as a whole. Therefore, it ... Keywords: Channel bandwidth, End-to-end delay, Multipath data transfer, Path selection, Spatial heterogeneity, Temporal heterogeneity, Throughput

Soo-Young Lee; Jun Huang

2004-08-01T23:59:59.000Z

105

WILEY WCMC SPECIAL ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 1 Prospects and Problems of Wireless Communication for Underwater  

E-Print Network (OSTI)

WILEY WCMC SPECIAL ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 1 Prospects and Problems of Wireless Communication for Underwater Sensor Networkss Lanbo Liu, Shengli Zhou, and Jun-Hong Cui The work ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 2 Abstract This paper reviews the physical fundamentals

Cui, Jun-Hong

106

Communication and Energy Efficiency in Visual Sensor Networks for People Localization  

Science Conference Proceedings (OSTI)

This paper addresses the communication and energy efficiency in collaborative visual sensor networks (VSNs) for people localization, a challenging computer vision problem of its own. We focus on the design of a light-weight and energy efficient solution where people are localized based on distributed camera nodes integrating the so-called certainty map generated at each node, that records the target non-existence information within the camera s field of view. We first present a dynamic itinerary for certainty map integration where not only each sensor node transmits a very limited amount of data but that a limited number of camera nodes is involved. Then, we perform a comprehensive analytical study to evaluate communication and energy efficiency between different integration schemes, i.e., centralized and distributed integration. Based on results obtained from analytical study and real experiments, the distributed method shows effectiveness in detection accuracy as well as energy and bandwidth efficiency.

Karakaya, Mahmut [ORNL; Qi, Hairong [ORNL

2012-01-01T23:59:59.000Z

107

Design of an Enhanced Handover Algorithm Based on a New Adaptive SR-ARQ for Next-Generation Mobile Communication Networks  

Science Conference Proceedings (OSTI)

Next-generation mobile communication networks are supposed to provide various high capacity multimedia services to mobile users using various kinds of access networks. Among them, the WiNGS system developed by ETRI as one of 4G mobile system provides ... Keywords: Mobile communication networks, handover performance, SR-ARQ, reordering, WiNGS system

Man Kyu Park; Yun Chul Choi; Jae Yone Lee; Byung Chul Kim; Dae Young Kim; Jae Ho Kim

2008-12-01T23:59:59.000Z

108

Communication Systems Chair of Communication Systems  

E-Print Network (OSTI)

, porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

Schindelhauer, Christian

109

Review Article: A comprehensive review of the application characteristics and traffic requirements of a smart grid communications network  

Science Conference Proceedings (OSTI)

A robust communication infrastructure is the touchstone of a smart grid that differentiates it from the conventional electrical grid by transforming it into an intelligent and adaptive energy delivery network. To cope with the rising penetration of renewable ... Keywords: AMI, AMR, ANSI, Applications, Communication architecture, Communication technologies, DAP, DER, DR, ESI, EV, FAN, GOOSE, HAN, HV, IEC, IED, IEEE, IP, M2M, MDMS, MU, NAN, P&C, PMU, QoS, SMV, SOC, Smart grid, Traffic requirements, WAMS, WLAN, WMN, WiMAX

Reduan H. Khan; Jamil Y. Khan

2013-02-01T23:59:59.000Z

110

QoS-driven adaptive resource allocation for mobile wireless communications and networks  

E-Print Network (OSTI)

Quality-of-service (QoS) guarantees will play a critically important role in future mobile wireless networks. In this dissertation, we study a set of QoS-driven resource allocation problems for mobile wireless communications and networks. In the first part of this dissertation, we investigate resource allocation schemes for statistical QoS provisioning. The schemes aim at maximizing the system/network throughput subject to a given queuing delay constraint. To achieve this goal, we integrate the information theory with the concept of effective capacity and develop a unified framework for resource allocation. Applying the above framework, we con-sider a number of system infrastructures, including single channel, parallel channel, cellular, and cooperative relay systems and networks, respectively. In addition, we also investigate the impact of imperfect channel-state information (CSI) on QoS pro-visioning. The resource allocation problems can be solved eciently by the convex optimization approach, where closed-form allocation policies are obtained for different application scenarios. Our analyses reveal an important fact that there exists a fundamental tradeoff between throughput and QoS provisioning. In particular, when the delay constraint becomes loose, the optimal resource allocation policy converges to the water-filling scheme, where ergodic capacity can be achieved. On the other hand, when the QoS constraint gets stringent, the optimal policy converges to the channel inversion scheme under which the system operates at a constant rate and the zero-outage capacity can be achieved. In the second part of this dissertation, we study adaptive antenna selection for multiple-input-multiple-output (MIMO) communication systems. System resources such as subcarriers, antennas and power are allocated dynamically to minimize the symbol-error rate (SER), which is the key QoS metric at the physical layer. We propose a selection diversity scheme for MIMO multicarrier direct-sequence code- division-multiple-access (MC DS-CDMA) systems and analyze the error performance of the system when considering CSI feedback delay and feedback errors. Moreover, we propose a joint antenna selection and power allocation scheme for space-time block code (STBC) systems. The error performance is derived when taking the CSI feedback delay into account. Our numerical results show that when feedback delay comes into play, a tradeoff between performance and robustness can be achieved by dynamically allocating power across transmit antennas.

Tang, Jia

2006-12-01T23:59:59.000Z

111

Investigation of broadband over power line channel capacity of shipboard power system cables for ship communications networks  

E-Print Network (OSTI)

Broadband over Power Line (BPL) technology has garnered significant attention lately due to recent advancements in solid state technologies and channel coding schemes. The successful application of BPL technology for in-home automation and networking has led to suggestions of applying BPL in other systems including ships. The application of BPL technology using the Shipboard Power System (SPS) as a potential communications network for ship automation systems has been proposed, to achieve recent U.S. Navy ship management concepts geared toward reducing ship manning while improving operational efficiency. This thesis presents an analytical model developed to examine the channel response characteristics and estimated throughput capacity of SPS cables. The work used a multiconductor transmission line theory based approach to model the channel response of SPS distribution lines and estimated the channel throughput capacity using a water-filling communication technique. This work found that BPL using the SPS holds a strong potential for use as a communications network for ship communication systems.

Akinnikawe, Ayorinde

2008-12-01T23:59:59.000Z

112

Bayesian networks  

E-Print Network (OSTI)

g causal independence in Bayesian network inference. Journalworld ap- plications of Bayesian networks. Communications ofJensen. An Introduction to Bayesian Networks. Springer, New

Judea Pearl

2011-01-01T23:59:59.000Z

113

Communication protocols for underwater data collection using a robotic sensor network  

E-Print Network (OSTI)

We examine the problem of collecting data from an underwater sensor network using an autonomous underwater vehicle (AUV). The sensors in the network are equipped with acoustic modems that provide noisy, range-limited ...

Singh, Hanumant

2013-05-01T23:59:59.000Z

114

Design and implementation of a framework for persistent identification and communication in emerging networks  

Science Conference Proceedings (OSTI)

The Internet Protocol (IP) is currently used to provide inter-networking among heterogeneous access networks. However, the evolution of and the innovation within these networks is greatly hindered by the geographical and topological rigidness of the ... Keywords: mobility, persistent identification, testbed

Joud S. Khoury; Henry Jerez; Luca De Cicco

2008-03-01T23:59:59.000Z

115

Discovery of email communication networks from the Enron corpus with a genetic algorithm using social network analysis  

Science Conference Proceedings (OSTI)

During the legal investigation of Enron Corporation, the U.S. Federal Regulatory Commission (FERC) made public a substantial data set of the company's internal corporate emails. This work presents a genetic algorithm (GA) approach to social network analysis ...

Garnett Wilson; Wolfgang Banzhaf

2009-05-01T23:59:59.000Z

116

Advances in integrating autonomy with acoustic communications for intelligent networks of marine robots  

E-Print Network (OSTI)

Autonomous marine vehicles are increasingly used in clusters for an array of oceanographic tasks. The effectiveness of this collaboration is often limited by communications: throughput, latency, and ease of reconfiguration. ...

Schneider, Toby Edwin

2013-01-01T23:59:59.000Z

117

A framework for longitudinal influence measurement between communication content and social networks  

Science Conference Proceedings (OSTI)

Artificial intelligence has a long history of learning from domain problems ranging from chess to jeopardy. In this work, we look at a problem stemming from social science, namely, how do social relationships influence communication content and vice ...

Shenghui Wang; Paul Groth

2011-07-01T23:59:59.000Z

118

Discrete-Time Queueing Systems and Their Application to Analysis of Optical-Fiber Communication Networks  

Science Conference Proceedings (OSTI)

A double-bus optical-fiber communication system is studied. The request and transmission buses are modeled by a priority and cyclic queueing system, respectively. Their probabilistic-time characteristics are determined. Theoretical results are compared ...

A. A. Nazarov; S. U. Urazbaeva

2002-12-01T23:59:59.000Z

119

A bit more to it: scholarly communication forums as socio-technical interaction networks  

Science Conference Proceedings (OSTI)

In this article, we examine the conceptual models that help us understand the development and sustainability of scholarly and professional communication forums on the Internet, such as conferences, pre-print servers, field-wide data sets, and collaboratories. ...

Rob Kling; Geoffrey McKim; Adam King

2003-01-01T23:59:59.000Z

120

E-print Network Web Log News: Research Communications for Scientists...  

Office of Scientific and Technical Information (OSTI)

Description This Web Log provides the latest information about changes to E-print Network - its content, features, and functionality - as well as news or information of interest...

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Error-resilient video communications over CDMA networks with a bandwidth constraint  

E-Print Network (OSTI)

allocation for wire- less video over CDMA networks, IEEERegunathan, and K. Rose, Video coding with op- timal inter/channel coding for scalable video over DS-CDMA multipath

Shen, Yushi Dr.; Cosman, P C Prof.; Milstein, L B Prof.

2006-01-01T23:59:59.000Z

122

An energy-efficient communication system for ad hoc wireless and sensor networks  

E-Print Network (OSTI)

Existing ad hoc wireless and sensor network systems often trade off energy against performance. As such, it is hard to find a single deployable system that supports high data rates while maintaining energy-efficient ...

Tetteh, William Nii Adjetey

2007-01-01T23:59:59.000Z

123

Moving HomePlug to Industrial Applications with Power-Line Communication Network  

E-Print Network (OSTI)

Home networking is becoming an attractive application not only for the Internet access but also for home automation. Being a high-speed and dominant standard presently, HomePlug has an important role in home LAN connecting ...

Zhao, Z.W.

124

Wireless Networking to Support Data and Voice Communication Using Spread Spectrum Technology in The Physical Layer  

E-Print Network (OSTI)

Wireless networking is rapidly growing and becomes an inexpensive technology which allows multiple users to simultaneously access the network and the internet while roaming about the campus. In the present work, the software development of a wireless LAN(WLAN) is highlighted. This WLAN utilizes direct sequence spread spectrum (DSSS) technology at 902MHz RF carrier frequency in its physical layer. Cost effective installation and antijaming property of spread spectrum technology are the major advantages of this work.

Dhar, Sourav

2007-01-01T23:59:59.000Z

125

Leveraging coherent distributed space-time codes for noncoherent communication in relay networks via training  

Science Conference Proceedings (OSTI)

For point to point multiple input multiple output systems, Dayal-Brehler-Varanasi have proved that training codes achieve the same diversity order as that of the underlying coherent space time block code (STBC) if a simple minimum mean squared error ... Keywords: cooperative diversity, distributed space time block code, noncoherent communication, training

G. Susinder Rajan; B. Sundar Rajan

2009-02-01T23:59:59.000Z

126

Protocols for purpose-restricted anonymous communications in IP-based wireless networks  

Science Conference Proceedings (OSTI)

Anonymity and specifically sender anonymity have become essential requirements for many privacy-related applications (e.g. net counselling and whistle blowing). On the other hand, anonymity may be abused for various malicious activities (e.g. redistribution ... Keywords: Anonymous authentication, Anonymous communication, IP address assignment, Password-based authenticated key exchange, Sender anonymity

Hanane Fathi; SeongHan Shin; Kazukuni Kobara; Hideki Imai

2008-09-01T23:59:59.000Z

127

Wireless networks: from the physical layer to communication, computing, sensing and control [Book Review  

Science Conference Proceedings (OSTI)

This book is a mixture of lectures held on the island on Capri in Italy in 2004 in which not only the currently important but also possible future characteristics of wireless communications are presented. This book should be treated as a helpful reference ...

K. Kosek

2007-11-01T23:59:59.000Z

128

NIST Posts Comments on Public Safety Communications ...  

Science Conference Proceedings (OSTI)

NIST Posts Comments on Public Safety Communications Network. From NIST Tech Beat: November 22, 2011. ...

2011-11-22T23:59:59.000Z

129

Network  

NLE Websites -- All DOE Office Websites (Extended Search)

network - launched in November 2012. The network was built in collaboration with Internet2, an advanced network, which connects the nation's research universities. Leveraging...

130

Airborne wireless communication systems, airborne communication methods, and communication methods  

SciTech Connect

An airborne wireless communication system includes circuitry configured to access information describing a configuration of a terrestrial wireless communication base station that has become disabled. The terrestrial base station is configured to implement wireless communication between wireless devices located within a geographical area and a network when the terrestrial base station is not disabled. The circuitry is further configured, based on the information, to configure the airborne station to have the configuration of the terrestrial base station. An airborne communication method includes answering a 911 call from a terrestrial cellular wireless phone using an airborne wireless communication system.

Deaton, Juan D. (Menan, ID); Schmitt, Michael J. (Idaho Falls, ID); Jones, Warren F. (Idaho Falls, ID)

2011-12-13T23:59:59.000Z

131

RECA: a ring-structured energy-efficient clustering architecture for robust communication in wireless sensor networks  

Science Conference Proceedings (OSTI)

Clustering methods have shown their promising effects in the conservation of energy in Wireless Sensor Networks (WSNs). In this paper, we present a Ring-structured Energy-efficient Clustering Architecture (RECA) for WSNs to prolong ... Keywords: WSNs, cluster head management, energy efficiency, load balancing algorithms, network lifetime, ring-structured clustering, simulation, wireless networks, wireless sensor networks

Guanfeng Li; Taieb Znati

2007-04-01T23:59:59.000Z

132

Video communications system  

DOE Patents (OSTI)

A video communications system having at least one command network formed by a combination of subsystems to include a video subsystem, an audio subsystem, a communications subsystem, and a control subsystem. The video communications system to be window driven and mouse operated, and having the ability to allow for point-to-point real-time teleconferencing. 4 figs.

Smith, R.L.

1990-03-09T23:59:59.000Z

133

Secure video communications system  

DOE Patents (OSTI)

A secure video communications system having at least one command network formed by a combination of subsystems. The combination of subsystems to include a video subsystem, an audio subsystem, a communications subsystem, and a control subsystem. The video communications system to be window driven and mouse operated, and having the ability to allow for secure point-to-point real-time teleconferencing.

Smith, Robert L. (Idaho Falls, ID)

1991-01-01T23:59:59.000Z

134

Quantum Enabled Security (QES) for Optical Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Quantum Enabled Security (QES) for Optical Communications Quantum Enabled Security (QES) for Optical Communications Quantum Enabled Security (QES) for Optical Communications Los Alamos National Laboratory has developed Quantum Enabled Security (QES), a revolutionary new cybersecurity capability using quantum (single-photon) communications integrated with optical communications to provide a strong, innate, security foundation at the photonic layer for optical fiber networks. July 10, 2013 Quantum Enabled Security (QES) for Optical Communications Available for thumbnail of Feynman Center (505) 665-9090 Email Quantum Enabled Security (QES) for Optical Communications Applications: Secure communication over optical or free space networks Financial networks Transparent access networks: fiber to the home (FTTH); fiber to the

135

Cooperative Communication over Underwater Acoustic Channels.  

E-Print Network (OSTI)

??As diverse and data-heavy underwater applications emerge, demanding requirements are further imposed on underwater wireless communication systems. Future underwater wireless communication networks might consist of (more)

Aldharrab, Suhail Ibrahim

2013-01-01T23:59:59.000Z

136

Topics in network communications  

E-Print Network (OSTI)

capacities by introducing parallel edges. For a given ?nite alphabet, an edge function is a mapping,

Cannons, Jillian Leigh

2008-01-01T23:59:59.000Z

137

A communication-optimizing middleware for efficient wireless communication in rural environments  

Science Conference Proceedings (OSTI)

The realization of wireless communication in rural environments suffers from long distances, unknown node mobility and discontinuous communication paths. Combination of delay-tolerant mobile ad-hoc networks and infrastructure-based mobile communications ... Keywords: DTNs, MANETs, cellular networks, communication predictions, communication-optimizing middleware, machine learning, rural environments

Frank Nordemann

2012-12-01T23:59:59.000Z

138

Public Safety Broadband Network  

Science Conference Proceedings (OSTI)

... EMNTG) performs RF network analysis and optimization of ... Network analyses can be used to predict ... of an incident area communication scenario. ...

2012-02-22T23:59:59.000Z

139

Securing group communication in dynamic, disadvantaged networks : implementation of an elliptic-curve pairing-based cryptography library  

E-Print Network (OSTI)

This thesis considers the problem of securing communication among dynamic groups of participants without relying on an online group keying service. As a solution, we offer the design and implementation of the Public Key ...

Figueiredo, Rob

2006-01-01T23:59:59.000Z

140

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 10, NO. 10, OCTOBER 2011 3343 Cognitive Multiple Access Network with  

E-Print Network (OSTI)

Access Network with Outage Margin in the Primary System Behrouz Maham, Member, IEEE, Petar Popovski 197565/V30 entitled "Theoretical Foundations of Mobile Flexible Networks ­ THEFONE." B. Maham is currently with the School of Electrical and Computer Engineering, University of Tehran (e-mail: b.maham

Zhou, Xiangyun "Sean"

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Atacama: An Open FPGA-Based Platform for Mixed-Criticality Communication in Multi-segmented Ethernet Networks  

Science Conference Proceedings (OSTI)

Ethernet is widely recognized as an attractive networking technology for modern distributed real-time systems. However, standard Ethernet components require specific modifications and hardware support to provide strict latency guarantees necessary for ... Keywords: Real-Time Ethernet, safety-critical systems, open-source hardware design, multi-segmented networks

Gonzalo Carvajal, Miguel Figueroa, Robert Trausmuth, Sebastian Fischmeister

2013-04-01T23:59:59.000Z

142

Demo: Achieving robust sensor networks through close coordination between narrow-band power line and low-power wireless communications  

Science Conference Proceedings (OSTI)

Sensor networks are increasingly available in home and industry automation applications. The use of battery-powered wireless sensor nodes eases network deployment, but the dynamic wireless medium, along with energy and bandwidth constraints, poses a ... Keywords: PLC, coordination, hybrid, robustness, wireless

Yanjun Sun; Sandeep Bhadra; Soon-Hyeok Choi; Minghua Fu; Xiaolin Lu

2011-11-01T23:59:59.000Z

143

Predictive analysis of concealed social network activities based on communication technology choices: early-warning detection of attack signals from terrorist organizations  

E-Print Network (OSTI)

activities based on communication technology choices: early-of what their communications technology choices may revealall avail- able communications technology use records over

Drozdova, Katya; Samoilov, Michael

2010-01-01T23:59:59.000Z

144

Lighting Group: Controls and Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Communications Communications Controls and Communications The Controls and Communications research activity investigates how digital technologies, such as Bluetooth, can be applied to building lighting control systems to increase building efficiency and improve occupant comfort and productivity. Projects range from embedded device networks applied to building lighting systems, to WiFi and environmental sensing and monitoring. light switch Current Projects IBECS (Integrated Building Environmental Communications System) Wireless Lighting Controls (with DUST Networks) HPCBS Advanced Digital Controls Building Control Systems Integration Completed Projects CEC Public Interest Energy Research (PIER) Projects 450 Golden Gate Project New Publications Standardizing Communication Between Lighting Devices: A Role for

145

Molecular Communication for Nanomachines Using Intercellular Calcium Signaling  

E-Print Network (OSTI)

Molecular Communication for Nanomachines Using Intercellular Calcium Signaling Tadashi Nakano, Irvine, Irvine, CA 92697, USA Abstract -- Molecular communication is engineered biological communication the design of a molecular communication system based on intercellular calcium signaling networks. This paper

Baykal, Buyurman

146

Smart Grid Communications System Blueprint  

Science Conference Proceedings (OSTI)

Telecommunications operators are well versed in deploying 2G and 3G wireless networks. These networks presently support the mobile business user and/or retail consumer wishing to place conventional voice calls and data connections. The electrical power industry has recently commenced transformation of its distribution networks by deploying smart monitoring and control devices throughout their networks. This evolution of the network into a smart grid has also motivated the need to deploy wireless technologies that bridge the communication gap between the smart devices and information technology systems. The requirements of these networks differ from traditional wireless networks that communications operators have deployed

Adrian Clark; Chris Pavlovski

2010-01-01T23:59:59.000Z

147

Static and dynamic virtual channel allocation for high performance, in-order communication in on-chip networks  

E-Print Network (OSTI)

Most routers in on-chip interconnection networks (OCINs) have multiple virtual channels (VCs) to mitigate the effects of head-of-line blocking. Multiple VCs necessitate VC allocation schemes since packets or flows must ...

Shim, Keun Sup

2010-01-01T23:59:59.000Z

148

Network-Adaptive Video Communication Using Packet Path Diversity and Rate-Distortion Optimized Reference Picture Selection  

Science Conference Proceedings (OSTI)

In this paper, we present error-resilient Internet video transmission using path diversity and rate-distortion optimized reference picture selection. Under this scheme, the optimal packet dependency is determined adapting to network characteristics and ... Keywords: Path diversity, error-resilient video coding, low-latency, network-adaptive video coding, rate-distortion optimization, reference picture selection, source-channel coding, video streaming

Yi J. Liang; Eric Setton; Bernd Girod

2005-11-01T23:59:59.000Z

149

The Development of Social E-Enterprises, Mobile Communication and Social Networks: A Social Cognitive Perspective of Technological Innovation  

Science Conference Proceedings (OSTI)

As technological innovations have progressed, the ability of social enterprises to find creative solutions to social problems in the global economy has increased. Social electronic enterprises e-enterprises contribute to the well-being of society by ... Keywords: E-Enterprise, Mobile Communication, Online Communities, Social Entrepreneurs, Social Entrepreneurship, Social Software, Social Value, Technological Innovation

Vanessa Ratten

2013-07-01T23:59:59.000Z

150

On the Impacts and Benefits of Implementing Full-Duplex Communications Links in an Underwater Acoustic Network  

E-Print Network (OSTI)

-duplex links requires the total system data capacity be divided between the generated channels, which can lead of sensor grids, ad hoc communications links to covert forces, or positive control of unmanned, forward-deployed weapons systems. However, the capacity limitations and extreme propagation delays of acoustic

Xie, Geoffrey

151

IEEE Network May/June 20126 0890-8044/12/$25.00 2012 IEEE he dramatic penetration of wireless communications,  

E-Print Network (OSTI)

A unique characteristic of the smart grid is the integration of distributed renewable energy sources (e- cations, and study its potentials in the smart grid. We first identi- fy the motivations in exploiting is identified and discussed. After that, a CM2M communications architecture for the smart grid is presented

Zhang, Yan

152

Wireless Underwater Communications  

Science Conference Proceedings (OSTI)

The depths of the oceans have a high potential for future industrial development and applications. Robotic autonomous systems will greatly depend on a reliable communications channel with operators and equipment either performing joint operations or ... Keywords: Acoustic communications, Channel modelling, Networking mechanisms, Underwater

J. Poncela; M. C. Aguayo; P. Otero

2012-06-01T23:59:59.000Z

153

552 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 2, FEBRUARY 2011 On the Capacity of WDM Passive Optical Networks  

E-Print Network (OSTI)

--To lower costs, WDM PONs may share the usage of wavelengths, transmitters, and receivers among ONUs are with the Advanced Networking Laboratory, Department of Electrical and Computer Engineering, New Jersey Institute in the number of ONUs. Many architectures have been proposed to lower the cost of WDM PONs since the first WDM

Ansari, Nirwan

154

Hawaii International Conference on Systems Sciences, January 2002, Hawaii. IEEE Growth and Propagation of Disturbances in a Communication Network Model  

E-Print Network (OSTI)

, distribution systems, and electrical power transmission grids which run near their operational limits, can of the probability distribution function of this data is suggestive of SOC type dynamics. Although sophisticated distribution network models with different levels of complexity are examined and compared to each other

Newman, David

155

Cross-domain (RF-analog-digital) techniques to enable power-friendly wireless transceivers  

E-Print Network (OSTI)

in Multi-Hop Point-To-Point FDD Wireless Backhaul Networks,"the frequency division duplexing (FDD) scheme. Unfortunately

Gharavi, Sam

2013-01-01T23:59:59.000Z

156

Graceful network state migrations  

Science Conference Proceedings (OSTI)

A significant fraction of network events (such as topology or route changes) and the resulting performance degradation stem from premeditated network management and operational tasks. This paper introduces a general class of Graceful Network State Migration ... Keywords: communication system operations and management, computer network management, network maintenance, network upgrade

Saqib Raza; Yuanbo Zhu; Chen-Nee Chuah

2011-08-01T23:59:59.000Z

157

Network protection with service guarantees  

E-Print Network (OSTI)

With the increasing importance of communication networks comes an increasing need to protect against network failures. Traditional network protection has been an "all-or-nothing" approach: after any failure, all network ...

Kuperman, Gregory

2013-01-01T23:59:59.000Z

158

Robust Offshore Networks for Oil and Gas Facilities.  

E-Print Network (OSTI)

??Offshore Communication Networks utilize multiple of communication technologies to eradicate any possibilities of failures, when the network is operational. Offshore Oil and Gas platforms and (more)

Maheshwari, D.

2010-01-01T23:59:59.000Z

159

Network scheduling for data archiving applications in sensor networks  

Science Conference Proceedings (OSTI)

Since data archiving in sensor networks is a communication intensive application, a careful power management of communication is of critical importance for such networks. An example is FPS, an adaptive power scheduling algorithm that combines slotted ...

Yong Yao; S. M. Nazrul Alam; Johannes Gehrke; Sergio D. Servetto

2006-09-01T23:59:59.000Z

160

Predicting faculty job centrality in communication  

Science Conference Proceedings (OSTI)

Data from 1,581 faculty members affiliated with 98 doctoral-granting Communication programs in the United States were analyzed to determine normative publication rates and predictors of position centrality in the faculty hiring network. The Communication ... Keywords: Advisor, Centrality, Communication, Hiring, Network, Publications

Thomas Hugh Feeley; Katherine Hart Lavail; George A. Barnett

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Optimization Online - Energy Savings in Wireless Mesh Networks in ...  

E-Print Network (OSTI)

Jan 24, 2011 ... Abstract: Energy consumption of communication systems is ... Keywords: Energy savings, wireless Mesh Networks, Green networking.

162

Large wireless networks : fundamental limits and design issues  

E-Print Network (OSTI)

design and operation of wireless networks? Unfortunately notWireless Communications: Scaling Laws and Optimal Operation,

Minero, Paolo

2010-01-01T23:59:59.000Z

163

Report: Communications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

COMMUNICATIONS COMMUNICATIONS Background In September 2006, the Environmental Management Advisory Board (EMAB) issued a report to the Assistant Secretary that contained recommendations pertaining to communications. These recommendations were approved and implemented to varying degrees. Recommendation 2006-06: Establish a permanent position to provide the needed communications role in the Office of the Assistant Secretary. Recommendation 2006-07: Incorporate communications into all aspects of decision-making. Recommendation 2006-08: Incorporate a communications element or standard to performance appraisal plans for key managers, especially field managers. Recommendation 2006-09: Measure the effectiveness of current communications tools.

164

Re: NBP RFI: Communications Requirements | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NBP RFI: Communications Requirements NBP RFI: Communications Requirements Re: NBP RFI: Communications Requirements CTIA - The Wireless Association® ("CTIA")1 submits this response to the Department of Energy's ("DOE") Request for Information ("RFI") regarding the communications requirements of utilities pursuant to the National Broadband Plan.2 Wireless communications are a critical component of "Smart Grids" and commercial wireless networks can readily satisfy the communications requirements of Smart Grid applications. As CTIA explains below, (1) commercial wireless solutions are already meeting communications needs to implement the Smart Grid with both utility network and consumer applications; (2) commercial wireless networks" ubiquity, security and reliability support the operational requirements of Smart Grid

165

Communication in Home Area Networks  

E-Print Network (OSTI)

277 VAC transformer EV EV EV EV EV Adapter Power Line Cabledistribution power line). A typical transformer equivalentpower line in commercial buildings in America/Japan needs additional transformer.

Wang, Yubo

2012-01-01T23:59:59.000Z

166

Communication in Home Area Networks  

E-Print Network (OSTI)

Vehicle Supply Equipment Green PHY PEV Plug-in Electricaldata rate. HomePlug Green PHY (GP), AV and AV2 are developedstandards Netricity Green PHY AV AV2 Bandwidth(Hz) 10490 k

Wang, Yubo

2012-01-01T23:59:59.000Z

167

Communication in Home Area Networks  

E-Print Network (OSTI)

Linking and Embedding EVSE OSI Open Systems InterconnectionVehicle Supply Equipment (EVSE), by using PLC no additionalcost of deploying a 6-node EVSE HAN as shown in Fig. 5.5.

Wang, Yubo

2012-01-01T23:59:59.000Z

168

Energy-efficient communication protocols  

Science Conference Proceedings (OSTI)

Wireless networking has experienced a great deal of popularity, and significant advances have been made in wireless technology. However, energy efficiency of radio communication systems is still a critical issue due to the limited battery capacity of ... Keywords: battery charge recovery, energy efficiency, wireless networks

Carla F. Chiasserini; Pavan Nuggehalli; Vikram Srinivasan

2002-06-01T23:59:59.000Z

169

Efficient Communication Interfaces for Distributed Energy Resources  

Science Conference Proceedings (OSTI)

The IEC 61850 standard originally was developed for the substation automation. During the past years it was adapted for the integration of distributed energy resources into communication networks, however, with specific requirements. Many small and midsize ... Keywords: Client-Server, Data Modeling, Distributed Systems, Information and Communication Technologies, Networks

Heinz Frank; Sidonia Mesentean

2010-04-01T23:59:59.000Z

170

Data communications  

SciTech Connect

The purpose of this paper is to recommend regulatory guidance for reviewers examining computer communication systems used in nuclear power plants. The recommendations cover three areas important to these communications systems: system design, communication protocols, and communication media. The first area, system design, considers three aspects of system design--questions about architecture, specific risky design elements or omissions to look for in designs being reviewed, and recommendations for multiplexed data communication systems used in safety systems. The second area reviews pertinent aspects of communication protocol design and makes recommendations for newly designed protocols or the selection of existing protocols for safety system, information display, and non-safety control system use. The third area covers communication media selection, which differs significantly from traditional wire and cable. The recommendations for communication media extend or enhance the concerns of published IEEE standards about three subjects: data rate, imported hazards and maintainability.

Preckshot, G.G. [Lawrence Livermore National Lab., CA (United States)

1993-08-01T23:59:59.000Z

171

Quantum Communication Technology  

E-Print Network (OSTI)

Quantum communication is built on a set of disruptive concepts and technologies. It is driven by fascinating physics and by promising applications. It requires a new mix of competencies, from telecom engineering to theoretical physics, from theoretical computer science to mechanical and electronic engineering. First applications have already found their way to niche markets and university labs are working on futuristic quantum networks, but most of the surprises are still ahead of us. Quantum communication, and more generally quantum information science and technologies, are here to stay and will have a profound impact on the XXI century.

Gisin, Nicolas

2010-01-01T23:59:59.000Z

172

Network Coding based Information Security in Multi-hop Wireless Networks.  

E-Print Network (OSTI)

??Multi-hop Wireless Networks (MWNs) represent a class of networks where messages are forwarded through multiple hops of wireless transmission. Applications of this newly emerging communication (more)

Fan, Yanfei

2010-01-01T23:59:59.000Z

173

MFC Communications Infrastructure Study  

SciTech Connect

Unprecedented growth of required telecommunications services and telecommunications applications change the way the INL does business today. High speed connectivity compiled with a high demand for telephony and network services requires a robust communications infrastructure. The current state of the MFC communication infrastructure limits growth opportunities of current and future communication infrastructure services. This limitation is largely due to equipment capacity issues, aging cabling infrastructure (external/internal fiber and copper cable) and inadequate space for telecommunication equipment. While some communication infrastructure improvements have been implemented over time projects, it has been completed without a clear overall plan and technology standard. This document identifies critical deficiencies with the current state of the communication infrastructure in operation at the MFC facilities and provides an analysis to identify needs and deficiencies to be addressed in order to achieve target architectural standards as defined in STD-170. The intent of STD-170 is to provide a robust, flexible, long-term solution to make communications capabilities align with the INL mission and fit the various programmatic growth and expansion needs.

Michael Cannon; Terry Barney; Gary Cook; George Danklefsen, Jr.; Paul Fairbourn; Susan Gihring; Lisa Stearns

2012-01-01T23:59:59.000Z

174

Synchrophasor Communication Infrastructure  

Science Conference Proceedings (OSTI)

This project evaluated the benefits of various approaches to wide-area communications used for the transport of synchrophasor measurements both within the utility and to external entities such as regional transmission organizations (RTOs) and independent system operators (ISOs). The project also assessed the North American SynchroPhasor Initiative net (NASPInet) concept developed by the North American Synchrophasors Initiative's Data and Network Management Task Team. The NASPInet is a major effort by the...

2011-11-08T23:59:59.000Z

175

Synchrophasor Communication Infrastructure  

Science Conference Proceedings (OSTI)

This report details ongoing work begun in 2011 evaluating benefits of various wide-area communications approaches for transport of synchrophasor measurements, with a focus on latency. Recent discussions on synchrophasor use in the North American SynchroPhasor Initiative (NASPI) community have included consideration of automated closed-loop control over an Internet protocol (IP) network infrastructure.The projects focus in 2012 has been twofold: NASPInet architecture design and ...

2012-11-26T23:59:59.000Z

176

Quantum Communications  

Science Conference Proceedings (OSTI)

... In summary, we perform research and development (R&D) in quantum communication and related measurement areas with an emphasis on ...

2013-07-24T23:59:59.000Z

177

Communication constraints multi-agent territory exploration task  

Science Conference Proceedings (OSTI)

A common assumption made in multi-robot research is the connectedness of the underlying network. Although this seems a valid assumption for static networks, it is not realistic for mobile robotic networks, where communication between robots usually is ... Keywords: Communication, Environment exploration, Leader-follower, Multi-agent robotics systems

Anshika Pal; Ritu Tiwari; Anupam Shukla

2013-04-01T23:59:59.000Z

178

Towards Autonomic Communication Mechanisms for Service Composability Management  

Science Conference Proceedings (OSTI)

The Autonomic Communication Forum dedicates itself to leverage innovative mechanisms in order to provide new levels of integrated autonomicity to a future self-managed networks and network elements. Current trends in networking technologies are applying ... Keywords: Autonomic Communication, Service Composability Management

Thomas Magedanz; Jos A. Lozano; Florian Schreiner; Fabricio Gouveia; Juan M. Gonzlez

2008-03-01T23:59:59.000Z

179

Overcoming Communication Latency Barriers in Massively Parallel Scientific Computation  

Science Conference Proceedings (OSTI)

Anton, a massively parallel special-purpose machine that accelerates molecular dynamics simulations by orders of magnitude, uses a combination of specialized hardware mechanisms and restructured software algorithms to reduce and hide communication latency. ... Keywords: Data communications, interprocessor communications, multiprocessor systems, network communication, parallel systems, special-purpose hardware, Anton

Ron Dror; J. P. Grossman; Kenneth Mackenzie; Brian Towles; Edmond Chow; John Salmon; Cliff Young; Joseph Bank; Brannon Batson; David Shaw; Jeffrey S. Kuskin; Richard H. Larson; Mark A. Moraes; David E. Shaw

2011-05-01T23:59:59.000Z

180

Internal Communication  

NLE Websites -- All DOE Office Websites (Extended Search)

9 Internal Communication Process 11_0303 Page 1 of 6 9 Internal Communication Process 11_0303 Page 1 of 6 EOTA - Business Process Document Title: Internal Communication Process Document Number: P-009 Rev 11_0303 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: Q-001 Quality Manual Notify of Changes: EOTA Employees Referenced Document(s): N/A P-009 Internal Communication Process 11_0303 Page 2 of 6 Revision History: Rev. Description of Change A Initial Release 09_0902 Modified process to better fit current practice. 10_0831 Added verbiage to clarify process. Added initiation phrase to process steps. 11_0303 Added QAM to the last step and made minor editorial updates. P-009 Internal Communication Process 11_0303 Page 3 of 6 I. Purpose

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Scheduling in switched queueing networks with heavy-tailed trac  

E-Print Network (OSTI)

We study scheduling problems arising in switched queueing networks, a class of stochastic systems that are often used to model data communication networks, such as uplinks and downlinks of cellular networks, networks of ...

Markakis, Mihalis G

2013-01-01T23:59:59.000Z

182

Survey Paper: A survey on the communication architectures in smart grid  

Science Conference Proceedings (OSTI)

The next-generation electric power systems (smart grid) are studied intensively as a promising solution for energy crisis. One important feature of the smart grid is the integration of high-speed, reliable and secure data communication networks to manage ... Keywords: Communication networks, Communication protocols, Grid standards, Power communications, Smart grid

Wenye Wang; Yi Xu; Mohit Khanna

2011-10-01T23:59:59.000Z

183

RE: NBP RFI Reply Comments: Communications Requirements | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

RE: NBP RFI Reply Comments: Communications Requirements RE: NBP RFI Reply Comments: Communications Requirements RE: NBP RFI Reply Comments: Communications Requirements The National Rural Electric Cooperative Association and American Public Power Association file these brief reply comments in support of the comments and reply comments filed by the Utilities Telecom Council ("UTC"). Both organizations strongly believe that the Administration should ensure that adequate spectrum is available for internal, utility networks. Integrating Smart Grid technologies into Cooperative and Public Power Systems will necessitate enhanced communications networks. In some instances, Cooperatives and Public Power Systems may choose a commercial provider for at least some portion of their communication network service

184

DOE Encourages Utility Sector Nominations to the Federal Communications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the Federal the Federal Communications Commission's Communications, Security, Reliability, and Interoperability Council DOE Encourages Utility Sector Nominations to the Federal Communications Commission's Communications, Security, Reliability, and Interoperability Council March 29, 2011 - 5:22pm Addthis Because of the role communications technologies will play in the evolution toward a smarter national grid, DOE recommended in its October 2010 report, The Communications Requirements of Smart Grid Technologies, that members of the utility sector become more engaged in the federal advisory committees that consider key policy issues related to the Smart Grid, including the reliability of communications networks. Last week, the Federal Communications Commission announced that it is seeking nominations

185

Adoption of Vehicular Ad Hoc Networking Protocols by Networked Robots  

Science Conference Proceedings (OSTI)

This paper focuses on the utilization of wireless networking in the robotics domain. Many researchers have already equipped their robots with wireless communication capabilities, stimulated by the observation that multi-robot systems tend to have several ... Keywords: Networked robot, Robotic ad hoc network, V2I, V2V, Vehicular ad hoc network, Wireless robot

Wim Vandenberghe; Ingrid Moerman; Piet Demeester

2012-06-01T23:59:59.000Z

186

Communicating Logistics  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Logistics Logistics * Delayed or nonexistent communication * Lack of consistency-follow protocols * No overarching coordination * DUF6 communication is poor * Lesson learned: need enhanced, on-going, open communication prior to planning Routing * Re-examine avoiding population centers * Analyze delta between mixed vs. dedicated trains * Flexibility is key component of planning * Selection needs to include state infrastructure Inspections * Cooperate with federal, state, local parties for an integrated role * Schedule during planning process * Coordination to improve use of limited resources * Integrate new technologies TRANSCOM * Needs full funding * Continuous improvement of technology * Great when working * Protocols for assuring data accuracy * Back-up procedure when system is down Incidents & Accidents

187

16.36 Communication Systems Engineering, Spring 2003  

E-Print Network (OSTI)

Introduces the fundamentals of digital communications and networking. Topics covered include elements of information theory, sampling and quantization, coding, modulation, signal detection and system performance in the ...

Modiano, Eytan H.

188

Recommended Practices Guide For Securing ZigBee Wireless Networks...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

networks. ZigBee is a protocol specification and industry standard for a type of wireless communications technology generically known as Low-Rate Wireless Personal Area Networks...

189

Delay-tolerant networking: an approach to interplanetary Internet  

Science Conference Proceedings (OSTI)

Increasingly, network applications must communicate with counterparts across disparate networking environments characterized by significantly different sets of physical and operational constraints; wide variations in transmission latency are particularly ...

S. Burleigh; A. Hooke; L. Torgerson; K. Fall; V. Cerf; B. Durst; K. Scott; H. Weiss

2003-06-01T23:59:59.000Z

190

Use of an acoustic network as an underwater positioning system .  

E-Print Network (OSTI)

??Underwater acoustic networks provide an interface between UUVs and surface or land-based control systems. By exploiting range data measured incidental to communications on these networks (more)

Reed, Michael S.

2006-01-01T23:59:59.000Z

191

Practical comprehensive bounds on surreptitious communication over DNS  

Science Conference Proceedings (OSTI)

DNS queries represent one of the most common forms of network traffic, and likely the least blocked by sites. As such, DNS provides a highly attractive channel for attackers who wish to communicate surreptitiously across a network perimeter, and indeed ...

Vern Paxson, Mihai Christodorescu, Mobin Javed, Josyula Rao, Reiner Sailer, Douglas Schales, Marc Ph. Stoecklin, Kurt Thomas, Wietse Venema, Nicholas Weaver

2013-08-01T23:59:59.000Z

192

Design of a mobile coastal communications buoy  

E-Print Network (OSTI)

In response to a growing interest in networked communications at sea as well as the needs of our vital commercial fishing industry, the Northeast Consortium funded a novel research initiative to establish wireless acoustic ...

Hendry-Brogan, Meghan

2004-01-01T23:59:59.000Z

193

Energy and quality scalable wireless communication  

E-Print Network (OSTI)

Nodes for emerging, high-density wireless networks will face the dual challenges of continuous, multi-year operation under diverse and challenging operating conditions. The wireless communication subsystem, a substantial ...

Min, Rex K. (Rex Kee), 1976-

2003-01-01T23:59:59.000Z

194

Public Safety Communications  

Science Conference Proceedings (OSTI)

Public Safety Communication. Summary: ... the development of quantitative requirements for public safety communications. ...

2011-12-12T23:59:59.000Z

195

Application Opportunities in Wireless Communications  

Science Conference Proceedings (OSTI)

This report presents results of examining applications of wireless technologies that may present business potential for energy companies. Five different wireless technology areas are reviewed. Three areas -- Communication Networks, Monitored Security Services, and Home Automation -- potentially represent new business ventures for utilities. Two areas -- Automatic Vehicle Location and Automated Field-Force Management -- represent wireless applications with potential for reduced operating costs and improve...

1998-08-20T23:59:59.000Z

196

Visual analysis of implicit social networks for suspicious behavior detection  

Science Conference Proceedings (OSTI)

In this paper we show how social networks, implicitly built from communication data, can serve as a basis for suspicious behavior detection from large communications data (landlines and mobile phone calls) provided by communication services providers ...

Amyn Bennamane; Hakim Hacid; Arnaud Ansiaux; Alain Cagnati

2011-04-01T23:59:59.000Z

197

TESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS  

E-Print Network (OSTI)

TESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS Ljiljana Trajkovi Communication Networks;March 12, 2004 Kwantlen College Ljiljana Trajkovic, Simon Fraser University 2 Road map Tesla in 1890's Alternate currents Tesla left Edison in 1885. He formed his own laboratory "Tesla Electric Company" in 1887

Trajkovic, Ljiljana

198

TESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS  

E-Print Network (OSTI)

TESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS Ljiljana Trajkovi Communication Networks;January 17, 2005 UBC Ljiljana Trajkovic, Simon Fraser University 2 Road map Tesla in 1890's First wireless;January 17, 2005 UBC Ljiljana Trajkovic, Simon Fraser University 4 Alternate currents Tesla left Edison

Trajkovic, Ljiljana

199

Data and Computer Communications, 6th edition  

Science Conference Proceedings (OSTI)

From the Publisher:Data and Computer Communications provides a clear and comprehensive survey of the whole field of data communications and provides an up-to-date tutorial on leading-edge network technologies. This is the only book that covers the full ...

William Stallings

1999-11-01T23:59:59.000Z

200

Robust video communication over an urban VANET  

Science Conference Proceedings (OSTI)

Video communication within a Vehicular Ad Hoc Network (VANET) has the potential to be of considerable benefit in an urban emergency, as it allows emergency vehicles approaching the scene to better understand the nature of the emergency. However, the ... Keywords: Error resilience, IEEE 802.11p, VANET, multiple path delivery, redundant frames, video communication

N. Qadri; M. Altaf; M. Fleury; M. Ghanbari

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Internet and political communication - Macedonian case  

E-Print Network (OSTI)

Analysis how to use Internet influence to the process of political communication, marketing and the management of public relations, what kind of online communication methods are used by political parties, and to assess satisfaction, means of communication and the services they provide to their partys voters (people) and other interest groups and whether social networks can affect the political and economic changes in the state, and the political power of one party.

Emruli, Sali

2011-01-01T23:59:59.000Z

202

Final Project Report: DOE Award FG02?04ER25606 Overlay Transit Networking for Scalable, High Performance Data Communication across Heterogeneous Infrastructure  

SciTech Connect

As the flood of data associated with leading edge computational science continues to escalate, the challenge of supporting the distributed collaborations that are now characteristic of it becomes increasingly daunting. The chief obstacles to progress on this front lie less in the synchronous elements of collaboration, which have been reasonably well addressed by new global high performance networks, than in the asynchronous elements, where appropriate shared storage infrastructure seems to be lacking. The recent report from the Department of Energy on the emerging 'data management challenge' captures the multidimensional nature of this problem succinctly: Data inevitably needs to be buffered, for periods ranging from seconds to weeks, in order to be controlled as it moves through the distributed and collaborative research process. To meet the diverse and changing set of application needs that different research communities have, large amounts of non-archival storage are required for transitory buffering, and it needs to be widely dispersed, easily available, and configured to maximize flexibility of use. In today's grid fabric, however, massive storage is mostly concentrated in data centers, available only to those with user accounts and membership in the appropriate virtual organizations, allocated as if its usage were non-transitory, and encapsulated behind legacy interfaces that inhibit the flexibility of use and scheduling. This situation severely restricts the ability of application communities to access and schedule usable storage where and when they need to in order to make their workflow more productive. (p.69f) One possible strategy to deal with this problem lies in creating a storage infrastructure that can be universally shared because it provides only the most generic of asynchronous services. Different user communities then define higher level services as necessary to meet their needs. One model of such a service is a Storage Network, analogous to those used within computation centers, but designed to operate on a global scale. Building on a basic storage service that is as primitive as possible, such a Global Storage Network would define a framework within which higher level services can be created. If this framework enabled a variety of more specialized middleware and supported a wide array of applications, then interoperability and collaboration could occur based on that common framework. The research in Logistical Networking (LN) carried out under the DOE's SciDAC program tested the value of this approach within the context of several SciDAC application communities. Below we briefly describe the basic design of the LN storage network and some of the results that the Logistical Networking community has achieved.

Micah Beck; Terry Moore

2007-08-31T23:59:59.000Z

203

Safety Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Communications Communications New Staff & Guests Safety Topics ISM Plan Safety Communications Questions about safety and environmental compliance should first be directed to your supervisor or work lead. The Life Sciences Division Safety Coordinator Scott Taylor at setaylor@lbl.gov , 486-6133 (office), or (925) 899-4355 (cell); and Facilities Manager Peter Marietta at PMarietta@lbl.gov, 486-6031 (office), or 967-6596 (cell), are also sources of information. Your work group has a representative to the Division Environment, Health, & Safety Committee. This representative can provide safety guidance and offer a conduit for you to pass on your concerns or ideas. A list of current representatives is provided below. Additional safety information can be obtained on-line from the Berkeley Lab

204

Connectivity, throughput, and end-to-end latency in infrastructureless wireless Networks with beamforming-enabled devices  

E-Print Network (OSTI)

Infrastructureless wireless networks are an important class of wireless networks best fitted to operational situations with temporary, localized demand for communication ability. These networks are composed of wireless ...

Carey, Matthew F. (Matthew Francis)

2011-01-01T23:59:59.000Z

205

The Common Communication Interface (CCI)  

SciTech Connect

There are many APIs for connecting and exchanging data between network peers. Each interface varies wildly based on metrics including performance, portability, and complexity. Specifically, many interfaces make design or implementation choices emphasizing some of the more desirable metrics (e.g., performance) while sacrificing others (e.g., portability). As a direct result, software developers building large, network-based applications are forced to choose a specific network API based on a complex, multi-dimensional set of criteria. Such trade-offs inevitably result in an interface that fails to deliver some desirable features. In this paper, we introduce a novel interface that both supports many features that have become standard (or otherwise generally expected) in other communication interfaces, and strives to export a small, yet powerful, interface. This new interface draws upon years of experience from network-oriented software development best practices to systems-level implementations. The goal is to create a relatively simple, high-level communication interface with low barriers to adoption while still providing important features such as scalability, resiliency, and performance. The result is the Common Communications Interface (CCI): an intuitive API that is portable, efficient, scalable, and robust to meet the needs of network-intensive applications common in HPC and cloud computing.

Shipman, Galen M [ORNL; Atchley, Scott [ORNL; Dillow, David A [ORNL; Geoffray, Patrick [ORNL; Bosilca, George [University of Tennessee, Knoxville (UTK); Squyres, Jeffrey M [ORNL; Minnich, Ronald [Sandia National Laboratories (SNL)

2011-01-01T23:59:59.000Z

206

DTN Communication in a Mine Philip Ginzboorg  

E-Print Network (OSTI)

coal mine monitoring with wireless sensor networks. volume 5, pages 1­29, New York, NY, USA, 2009. ACM. [11] W. Yang and Y. Huang. Wireless sensor network based coal mine wireless and integrated securityDTN Communication in a Mine Philip Ginzboorg Nokia Research Center Teemu Kärkkäinen Aalto

Ott, Jörg

207

Impact of Information and Communications Technologies on  

E-Print Network (OSTI)

Systems LAN Local-area network LEOS Low-Earth Orbiting Satellites KCP&L Kansas City Power & Light NII communications systems. Several utilities (Kansas City Power & Light, Public Service of Colorado, Baltimore Gas that are delivered via modern telecommunications systems (e.g., fiber-optic and coaxial cable networks, fixed

208

A lightweight, high performance communication protocol for grid computing  

Science Conference Proceedings (OSTI)

This paper describes a lightweight, high-performance communication protocol for the high-bandwidth, high-delay networks typical of computational Grids. One unique feature of this protocol is that it incorporates an extremely accurate classification mechanism ... Keywords: Bayesian analysis, Classification mechanisms, Grid computing, High-performance communication protocols, High-performance networking

Phillip M. Dickens

2010-03-01T23:59:59.000Z

209

Definition: Supervisory Control and Data Acquisition (SCADA) Communications  

Open Energy Info (EERE)

and Data Acquisition (SCADA) Communications and Data Acquisition (SCADA) Communications Network Jump to: navigation, search Dictionary.png Supervisory Control and Data Acquisition (SCADA) Communications Network SCADA communication networks are used to control geographically dispersed devices. The electricity grid has employed them for 15 years; smart grid implements SCADA more extensively both in geographic density and automated control of distribution system functionality. "SCADA systems are highly distributed systems used to control geographically dispersed assets, often scattered over thousands of square kilometers, where centralized data acquisition and control are critical to system operation." NIST Guide to Supervisory and Data Acquisition - SCADA and Industrial Control Systems Security (2007).[1]

210

Netgauge: a network performance measurement framework  

Science Conference Proceedings (OSTI)

This paper introduces Netgauge, an extensible open-source framework for implementing network benchmarks. The structure of Netgauge abstracts and explicitly separates communication patterns from communication modules. As a result of this separation of ...

Torsten Hoefler; Torsten Mehlan; Andrew Lumsdaine; Wolfgang Rehm

2007-09-01T23:59:59.000Z

211

Resilience and security of opportunistic communications for emergency evacuation  

Science Conference Proceedings (OSTI)

We describe an autonomous emergency support system (ESS) based on opportunistic communications (oppcomms) to support navigation and evacuation of civilians in built environments. In our proposed system, civilians are equipped with low-cost human wearable ... Keywords: building evacuation, communications security, delay tolerant network, disaster management, emergency support, identity-based cryptography, opportunistic communication

Gokce Gorbil; Erol Gelenbe

2012-10-01T23:59:59.000Z

212

A Uniform Balancing Energy Routing Protocol for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In wireless sensor network, the power supply is, generally, a non-renewable battery. Consequently, energy effectiveness is a crucial factor. To maximize the battery life and therefore, the duration of network service, a robust wireless communication ... Keywords: Ad-hoc networks, Energy balancing, Energy efficiency, Sensor networks, Wireless communications

Ouadoudi Zytoune; Mohamed El Aroussi; Driss Aboutajdine

2010-10-01T23:59:59.000Z

213

Automotive ethernet: in-vehicle networking and smart mobility  

Science Conference Proceedings (OSTI)

This paper discusses novel communication network topologies and components and describes an evolutionary path of bringing Ethernet into automotive applications with focus on electric mobility. For next generation in-vehicle networking, the automotive ... Keywords: EV communication architecture, automotive, domain based commuication, electric vehicle, ethernet, in-vehicle networking, smart grid, vehicle network topology

Peter Hank, Steffen Mller, Ovidiu Vermesan, Jeroen Van Den Keybus

2013-03-01T23:59:59.000Z

214

Cognitive maritime wireless mesh/ad hoc networks  

Science Conference Proceedings (OSTI)

Cognitive maritime wireless mesh/ad hoc networks are proposed in this paper, for the purpose to provide high-speed and low-cost communications for the current maritime users by incorporating the licensed but unused frequency bands opportunistically. ... Keywords: Cognitive radio networks, IEEE 802.16, Maritime communications, Maritime mesh networks, Mesh/ad hc networks, White Space

Ming-Tuo Zhou; Hiroshi Harada

2012-03-01T23:59:59.000Z

215

System and Network Management  

Science Conference Proceedings (OSTI)

This document covers Systems and Network Management Requirements and is the first deliverable in a joint EPRI and Utility User Project to develop Network Management capability for Electric Utility Automation Systems (UAS) using international communication standards such as IEC 61850. The management of substation automation systems is critical since tools are now based, for the most part, on proprietary hardware and software. In modern state-of-the art substations, traditional network management has ...

2012-12-20T23:59:59.000Z

216

Body Area Networks: A Survey  

Science Conference Proceedings (OSTI)

Advances in wireless communication technologies, such as wearable and implantable biosensors, along with recent developments in the embedded computing area are enabling the design, development, and implementation of body area networks. This class of ... Keywords: body area networks, survey, wireless sensor networks

Min Chen; Sergio Gonzalez; Athanasios Vasilakos; Huasong Cao; Victor C. Leung

2011-04-01T23:59:59.000Z

217

PKM: a pairwise key management scheme for wireless sensor networks  

Science Conference Proceedings (OSTI)

Sensor networks are characterized by strict resource limitations and large scalability. Many sensor network applications require secure communication, a crucial component, especially in harsh environments. Symmetric key cryptography is very attractive ... Keywords: key distribution, key management, security, sensor networks

F. An; X. Cheng; J. M. Rivera; J. Li; Z. Cheng

2005-08-01T23:59:59.000Z

218

Energy-aware network coding circuit and system design  

E-Print Network (OSTI)

Network Coding (NC) has been shown to provide several advantages in communication networks in terms of throughput, data robustness and security. However, its applicability to networks with resource constrained nodes, like ...

Angelopoulos, Georgios, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

219

ASAP: automatic semantics-aware analysis of network payloads  

Science Conference Proceedings (OSTI)

Automatic inspection of network payloads is a prerequisite for effective analysis of network communication. Security research has largely focused on network analysis using protocol specifications, for example for intrusion detection, fuzz testing and ...

Tammo Krueger; Nicole Krmer; Konrad Rieck

2010-09-01T23:59:59.000Z

220

Meteorological Network Expansion Using Information Decay Concept  

Science Conference Proceedings (OSTI)

A generalized network design methodology was developed by using the basic entropy concept introduced by Shannon in communication engineering. In order to select potential sites for meteorological network expansion purposes, the meteorological ...

Tahir Husain; Mustafa A. Ukayli; Hasin U. Khan

1986-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Virtual infrastructure for wireless ad hoc networks  

E-Print Network (OSTI)

One of the most significant challenges introduced by ad hoc networks is coping with the unpredictable deployment, uncertain reliability, and erratic communication exhibited by emerging wireless networks and devices. The ...

Gilbert, Seth, 1976-

2007-01-01T23:59:59.000Z

222

Design of reliable SONET feeder networks  

Science Conference Proceedings (OSTI)

We address the physical SONET network design problem of selecting stackable, unidirectional rings connecting central office nodes (COs) and remote nodes (RNs). This problem frequently arises in designing feeder transport networks to support centralized ... Keywords: Communications, Heuristic, Integer Programming

June S. Park; Byung Ha Lim; Larry J. Leblanc

2007-03-01T23:59:59.000Z

223

Network Security for Substation Automation Systems  

Science Conference Proceedings (OSTI)

The protection of critical infrastructure against electronic and communication network based attacks becomes more and more important. This work investigates the threat of network-based attacks on substations, the nodes of the electric power grid. Three ...

Martin Naedele; Dacfey Dzung; Michael Stanimirov

2001-09-01T23:59:59.000Z

224

Mutual Exclusion on Multihop, Mobile Wireless Networks  

Science Conference Proceedings (OSTI)

The system considered in this paper is a mobile wireless network, commonly known as an ad hoc network. Mobile nodes in this dynamic topology function both as processors and routers to provide communication between nodes which are not within wireless ...

Jennifer Walter; Savita Kini

1997-12-01T23:59:59.000Z

225

Opportunistic packet scheduling in body area networks  

Science Conference Proceedings (OSTI)

Significant research efforts are being devoted to Body Area Networks (BAN) due to their potential for revolutionizing healthcare practices. Energy-efficiency and communication reliability are critically important for these networks. In an experimental ...

K. Shashi Prabh; Jan-Hinrich Hauer

2011-02-01T23:59:59.000Z

226

A survey on wireless sensor network infrastructure for agriculture  

Science Conference Proceedings (OSTI)

The hybrid wireless sensor network is a promising application of wireless sensor networking techniques. The main difference between a hybrid WSN and a terrestrial wireless sensor network is the wireless underground sensor network, which communicates ... Keywords: Agriculture, Hybrid wireless sensor network, Information collection, Monitoring, Wireless underground sensor network

Xiaoqing Yu; Pute Wu; Wenting Han; Zenglin Zhang

2013-01-01T23:59:59.000Z

227

Berkeley Lab Public Affairs Department: Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Communications and Media Relations Communications and Media Relations Communications and Media Relations Government and Community Relations Workforce Development & Education Creative Services Office (CSO) Image of Communications Dept. staff Berkeley Lab's Communications and Media Relations Group is responsible for gathering, reporting, and disseminating news about the Lab to both internal and external audiences, including employees, the media, and the community. The latest news can be found at the News Center, which includes press releases, feature stories, announcements, multimedia features, and employee news. The site is searchable and offers web feeds and social networking tools. In addition to the News Center, the Communications and Media Relations Group, together with the Creatives Services Office, also maintains the

228

Implementing the National Broadband Plan by Studying the Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Studying the Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Department of Energy (DOE) is seeking comments and information from interested parties to assist DOE in understanding the communications requirements of utilities, including, but not limited to, the requirements of the Smart Grid. This RFI also seeks to collect information about electricity infrastructure's current and projected communications requirements, as well as the types of networks and communications services that may be used for grid modernization. Specifically, DOE seeks information on what types of communications capabilities that the utilities

229

Contextual and Applications-Aware Communications Protocol Design for Vehicle-to-Vehicle Communications  

Science Conference Proceedings (OSTI)

Cooperative vehicular ad-hoc networks are currently under development for improving traffic safety and efficiency. The strict requirements of traffic safety applications demand robust communication protocols that are able to efficiently operate under ... Keywords: Context-awareness, Cooperative protocols, Intelligent transportation systems, Vehicular ad-hoc networks

Miguel Sepulcre; Javier Gozalvez

2013-06-01T23:59:59.000Z

230

Communications Technology and Urban Governance Reform: Project Highlights  

E-Print Network (OSTI)

In this paper, we describe highlights of a research project funded by the NSF Digital Government program. The study has examined the impacts of advanced communication technologies in the implementation of a system of neighborhood councils in Los Angeles. It employs social network analysis to chart the development of political networks engendered by the reform and the role of email in shaping these networks.

Christopher Weare

2005-01-01T23:59:59.000Z

231

Regulation, public policy, and investment in communications infrastructure  

Science Conference Proceedings (OSTI)

A growing number of countries are reexamining telecommunications policies in search of approaches that better support investment and innovation in advanced communication networks and services. In addition to regulatory instruments, a broad range of fiscal ... Keywords: Broadband, Innovation, Network investment, Next-generation networks, Public policy, Regulation, Ultrabroadband

Johannes M. Bauer

2010-02-01T23:59:59.000Z

232

Overall Requirements for Global Information Multimedia Communication Village 10th Strategic Workshop  

Science Conference Proceedings (OSTI)

The foundations for the definition of the network of the future should be based on a correct user and community characterizations to minimize the fragmentation of the experiences during the global interactions with information communication infrastructures. ... Keywords: Access networks, Network evolution, Smart environments domotics, User identity, WiMax, Wireless communications

Antonio Cimmino; Pasquale Donadio

2009-05-01T23:59:59.000Z

233

Review: Unicast routing protocols for vehicular ad hoc networks: A critical comparison and classification  

Science Conference Proceedings (OSTI)

Vehicular Ad hoc NETworks (VANETs) allow vehicles to form a self-organized network without the need for a permanent infrastructure. As a prerequisite to communication, an efficient route between network nodes must be established, and it must adapt to ... Keywords: Inter-vehicle communication, Mobile ad hoc network, Routing, VANET, Vehicular ad hoc networks

James Bernsen; D. Manivannan

2009-02-01T23:59:59.000Z

234

Acoustic system for communication in pipelines  

DOE Patents (OSTI)

A system for communication in a pipe, or pipeline, or network of pipes containing a fluid. The system includes an encoding and transmitting sub-system connected to the pipe, or pipeline, or network of pipes that transmits a signal in the frequency range of 3-100 kHz into the pipe, or pipeline, or network of pipes containing a fluid, and a receiver and processor sub-system connected to the pipe, or pipeline, or network of pipes containing a fluid that receives said signal and uses said signal for a desired application.

Martin, II, Louis Peter (San Ramon, CA); Cooper, John F. (Oakland, CA)

2008-09-09T23:59:59.000Z

235

Power-Aware Communication for Mobile Computers  

E-Print Network (OSTI)

Recently, the mobile community has focused on techniques for reducing energy consumption for mobile hosts. These power management techniques typically target communication devices such as wireless network interfaces, aiming to reduce usage, and thus energy consumption, of the particular device itself. We observe that optimization of a single device's energy consumption, without considering the effect of the strategy on the rest of the machine, can have negative consequences. We propose power management techniques addressing mobile host communications that encompass all components of a mobile host in an effort to optimize total energy consumption. Specifically, we propose runtime adaptation of communication parameters in order to minimize the energy consumed during active data transfer. Information about the network environment is used to drive such adaptations in an effort to compensate for the effect of dynamic service from wireless communication device on the energy consume...

Robin Kravets; Karsten Schwan; Ken Calvert

1999-01-01T23:59:59.000Z

236

PROCEEDINGS OF FOURTH BERKELEY CONFERENCE ON DISTRIBUTED DATA MANAGEMENT AND COMPUTER NETWORKS.  

E-Print Network (OSTI)

packet switching for local computer networks. Comm. of theaddressing capabilities for computer networks. Proe. IEEE,InternatIonal Conference on,Computer CommunIcatIon, August

Hall, Dennis

2011-01-01T23:59:59.000Z

237

Flexible network wireless transceiver and flexible network telemetry transceiver  

DOE Patents (OSTI)

A transceiver for facilitating two-way wireless communication between a baseband application and other nodes in a wireless network, wherein the transceiver provides baseband communication networking and necessary configuration and control functions along with transmitter, receiver, and antenna functions to enable the wireless communication. More specifically, the transceiver provides a long-range wireless duplex communication node or channel between the baseband application, which is associated with a mobile or fixed space, air, water, or ground vehicle or other platform, and other nodes in the wireless network or grid. The transceiver broadly comprises a communication processor; a flexible telemetry transceiver including a receiver and a transmitter; a power conversion and regulation mechanism; a diplexer; and a phased array antenna system, wherein these various components and certain subcomponents thereof may be separately enclosed and distributable relative to the other components and subcomponents.

Brown, Kenneth D. (Grain Valley, MO)

2008-08-05T23:59:59.000Z

238

Smart Grid Communications:  

E-Print Network (OSTI)

Interoperability is a key requirement for data communications in the smart grid. It has been articulated at great length by the GridWise Architecture Council (GWAC). However, the interoperability issues identified here to date include only interoperability of the data exchange. In this paper, we first argue that middleware is a key enabling technology for helping meet interoperability requirements and avoid stovepipe systems in the smart grid. We then argue that the smart grids data communications must support interoperability of Quality of Service (QoS) and security mechanisms across an entire power grid; this will necessarily involve traversing multiple organizations IT infrastructures that may have different network-level mechanisms for providing QoS and security. We introduce the concept of QoS stovepipes to illustrate how such QoS and security interoperability may occur. We then argue that the application programmer interface for such QoS and security requirements must be kept as high-level as possible to avoid QoS stovepipes. Finally, we argue that middleware-level mechanisms are a much better way to provide this end-to-end QoS and security, compared to the usual technique in the power grid of using (and getting locked into) network-level mechanisms (which the middleware is built on top of). 1 This paper is a reformatted version of one from the Grid-Interop 2009 meeting in Denver, Colorado, USA on November 18, 2009, and appearing there in its online proceedings (it won the Best Paper award for the Connectivity Track). URL for this document:

Qos Stovepipes; Qos Interoperability; David E. Bakken; Richard E. Schantz

2009-01-01T23:59:59.000Z

239

Handheld portable real-time tracking and communications device  

DOE Patents (OSTI)

Portable handheld real-time tracking and communications devices include; a controller module, communications module including global positioning and mesh network radio module, data transfer and storage module, and a user interface module enclosed in a water-resistant enclosure. Real-time tracking and communications devices can be used by protective force, security and first responder personnel to provide situational awareness allowing for enhance coordination and effectiveness in rapid response situations. Such devices communicate to other authorized devices via mobile ad-hoc wireless networks, and do not require fixed infrastructure for their operation.

Wiseman, James M. (Albuquerque, NM); Riblett, Jr., Loren E. (Edgewood, NM); Green, Karl L. (Albuquerque, NM); Hunter, John A. (Albuquerque, NM); Cook, III, Robert N. (Rio Rancho, NM); Stevens, James R. (Arlington, VA)

2012-05-22T23:59:59.000Z

240

Networked control of distributed energy resources: application to solid oxide fuel cells  

Science Conference Proceedings (OSTI)

This paper presents a model-based networked control approach for managing Distributed Energy Resources (DERs) over communication networks. As a model system, we consider a solid oxide fuel cell (SOFC) plant that communicates with the central controller ...

Yulei Sun; Sathyendra Ghantasala; Nael H. El-Farra

2009-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Transmission Power Allocation for Cooperative Relay-BasedNeighborhood Area Networks for Smart Grid  

E-Print Network (OSTI)

Architecture for the Smart Grid, IEEE Network, vol. 25, no.to-Machine Communications in Smart Grid. IEEE CommunicationInfrastructure for Smart Grid. IEEE Network, vol. 25, no.5,

Kai, Ma; Guoqiang, Hu; Spanos, Costas

2013-01-01T23:59:59.000Z

242

Connectivity problem in wireless networks  

Science Conference Proceedings (OSTI)

We study the complexity of the following connectivity problem in wireless networks: for a given placement of n nodes in the plane, the goal is to compute a channel and power assignment that forms strongly connected communication structure spanning ...

Dariusz R. Kowalski; Mariusz A. Rokicki

2010-09-01T23:59:59.000Z

243

Design of a backup network for catastrophe scenarios  

Science Conference Proceedings (OSTI)

Communication networks play a fundamental role in the response to a massive catastrophe, like an earthquake or a large-scale terrorist attack to a major urban area. In such situations, command centres must be able to rely on a fully operational communication ... Keywords: backup networks, emergency communications, resilience

S. Alves; B. Koldehofe; H. Miranda; F. Taiani

2009-06-01T23:59:59.000Z

244

Location privacy and resilience in wireless sensor networks querying  

Science Conference Proceedings (OSTI)

Due to the wireless nature of communication in sensor networks, the communication patterns between sensors could be leaked regardless of the adoption of encryption mechanisms-those would just protect the message content. However, communication patterns ... Keywords: Location privacy, Probabilistic algorithm, Resiliency, Security, Wireless sensor networks

Roberto Di Pietro; Alexandre Viejo

2011-03-01T23:59:59.000Z

245

DAVIC - Distributed Energy Automation via Implicit Communication  

NLE Websites -- All DOE Office Websites (Extended Search)

DAVIC - Distributed Energy Automation via Implicit Communication DAVIC - Distributed Energy Automation via Implicit Communication Speaker(s): Peter Palensky Date: January 22, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Peng Xu The electricity grid is seen as a wide-area distributed process, determined by its sub-processes - in our case the loads and distributed generation. Network-based coordination needs to be done very carefully and properly timed to avoid instabilities. Luckily, every point of the grid has the same grid frequency and the same time. Integrating these two trivial things (implicit communication) into one consistent communication model might complement a low-quality (explicit) best-effort communication channel (e.g. Internet, GPRS) for real time applications. A simulation shall clarify how

246

Information Technology & Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Communications Information Technology & Communications Express Licensing 3-dimensional imaging at nanometer resolutions Call for Commercialization andor CRADA Partners PathScan...

247

PROTOCOLS FOR SECURE COMMUNICATION AND TRAITOR TRACING IN ADVANCED METERING INFRASTRUCTURE.  

E-Print Network (OSTI)

??Electrical smart grid is rapidly growing worldwide. Advances in smart metering infrastructure have led to the creation of networks for bidirectional communication between neighborhood electric (more)

Miadzvezhanka, Siarhei

2011-01-01T23:59:59.000Z

248

Map: medial axis based geometric routing in sensor networks  

Science Conference Proceedings (OSTI)

One of the challenging tasks in the deployment of dense wireless networks (like sensor networks) is in devising a routing scheme for node to node communication. Important consideration includes scalability, routing complexity, quality of communication ... Keywords: medial axis, routing, sensor networks, system design

Jehoshua Bruck; Jie Gao; Anxiao Jiang

2007-12-01T23:59:59.000Z

249

Dynamic frequency allocation in fractional frequency reused OFDMA networks  

Science Conference Proceedings (OSTI)

This paper proposes a dynamic fractional frequency reused cell architecture that simplifies the problem of subcarrier allocation with frequency reuse in multicell OFDMA networks. The architecture divides the cell surface into two overlapping geographical ... Keywords: 3G, cellular networks, cross-layer adaptation, data networks, mobile communication systems, opportunistic scheduling, wireless communication

Syed Hussain Ali; Victor C. M. Leung

2009-08-01T23:59:59.000Z

250

Secure Personal Networks for IMT-Advanced Connectivity  

Science Conference Proceedings (OSTI)

The challenge to deliver the next generation of ubiquitous and converged network and service infrastructures for communication, computing and media, has forced research into innovative new directions. New infrastructures must overcome the scalability, ... Keywords: Cognitive radio, Connectivity, Cooperation of heterogeneous networks, IMT-Advanced, Personal networks, Ubiquitous communications

Albena Mihovska; Ramjee Prasad

2008-06-01T23:59:59.000Z

251

A compressive sensing-based reconstruction approach to network traffic  

Science Conference Proceedings (OSTI)

Traffic matrix in a network describes the end-to-end network traffic which embodies the network-level status of communication networks from origin to destination nodes. It is an important input parameter of network traffic engineering and is very crucial ...

Laisen Nie, Dingde Jiang, Zhengzheng Xu

2013-07-01T23:59:59.000Z

252

Communication protocols, queuing and scheduling delay analysis in CANDU SCWR hydrogen co-generation model.  

E-Print Network (OSTI)

??Industrial dynamical, Networked Control Systems (NCSs) are controlled over a communication network. We study a continuous-time CANada Deuterium Uranium-Super Critical Water Reactor (CANDU-SCWR) hydrogen plant (more)

Ahmed, Fayyaz

2011-01-01T23:59:59.000Z

253

Securing Cell Relay Networks  

Science Conference Proceedings (OSTI)

A cellular relay or cell relay (CR) is a device used to relay information from one point in a network to another through a wireless medium using spectrum from the cellular band. One common use of CRs in the United States is to provide wireless devices with access to higher bandwidth or broadband access points. Examples include advanced metering infrastructure (AMI) mesh networks that use meter-based transmitters and receivers to provide communications between meters and from ...

2013-12-20T23:59:59.000Z

254

A framework for Unified Communication and Collaboration strategy for telcos  

E-Print Network (OSTI)

Unified Communication and Collaboration (UCC) is a product offer that is the result of fixed and mobile networks convergence and the possibility of development of applications which are interoperable. Currently there are ...

Wahid, Bilal

2008-01-01T23:59:59.000Z

255

Cheiro : creating expressive textual communication and anthropomorphic typography  

E-Print Network (OSTI)

Despite rapid technological advancement and improvement in network bandwidth, people still like to use text for remote communication. Simplicity, directness and anonymity make textual chat the most popular method of ...

Lam, Francis, S.M. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

256

Continuous-Time Distributed Observers with Discrete Communication  

E-Print Network (OSTI)

computation. Distributed estimation problems arise, for instance, in sensor networks, electric power grids data, and rely upon distributed mechanisms to merge local computations, such as intermediate dataContinuous-Time Distributed Observers with Discrete Communication Florian D¨orfler, Fabio

Bullo, Francesco

257

The Economics of Communications/Networking  

E-Print Network (OSTI)

"PRIVACY" COLD "COLD FUSION" MXWEBDV "WEB SITE DEVELOPMENT" or "WEB DEVELOPMENT" FIREWAL "FIREWALL" NETWRK

Gruner, Daniel S.

258

Communicating oscillatory networks: Frequency Domain Analysis  

E-Print Network (OSTI)

-deterministic models and used the presented techni- que of frequency domain analysis to investigate the differ- ences. The quasi-deterministic models are constructed from exactly the same reaction scheme and kinetic para- meters, however the kinetic functions... significant role in our findings. Note in particular from Additional file 1 Table S4 that the two species that directly perturb the cell cycle (namely p53a and NF-#1;Bn) have low stochasticity, so any noise inherent in their respective net- works does...

Ihekwaba, Adaoha E C; Sedwards, Sean

2011-12-22T23:59:59.000Z

259

Exploring Collective Dynamics in Communication Networks  

Science Conference Proceedings (OSTI)

... Figure 2 provides a schematic diagram of the node ... Using the 2-D grid, we can determine the ... size, and congestion, we plot several power spectra in ...

2012-04-17T23:59:59.000Z

260

Report: EM Communications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

COMMUNICATIONS COMMUNICATIONS September 25, 2008 Submitted by the EMAB Communications Subcommittee Background: In response to the Environmental Management Advisory Board's (EMAB) expressed concern that a communications function was not part of the Office of Environmental Management's (EM) 2006 proposed reorganization, the Assistant Secretary requested that the Board make a recommendation as to whether EM should create a communications position with direct report to his office. In support of this request, EMAB established a subcommittee to review how communications within the Department and with stakeholders were being handled in EM, and report back to the full Board on its findings. The Communications Subcommittee's original report included five recommendations and

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Communications device identification methods, communications methods, wireless communications readers, wireless communications systems, and articles of manufacture  

DOE Patents (OSTI)

Communications device identification methods, communications methods, wireless communications readers, wireless communications systems, and articles of manufacture are described. In one aspect, a communications device identification method includes providing identification information regarding a group of wireless identification devices within a wireless communications range of a reader, using the provided identification information, selecting one of a plurality of different search procedures for identifying unidentified ones of the wireless identification devices within the wireless communications range, and identifying at least some of the unidentified ones of the wireless identification devices using the selected one of the search procedures.

Steele, Kerry D [Kennewick, WA; Anderson, Gordon A [Benton City, WA; Gilbert, Ronald W [Morgan Hill, CA

2011-02-01T23:59:59.000Z

262

Packet-Switched Optical Networks  

Science Conference Proceedings (OSTI)

In this article, we present a platform design for packet-switched OTDM networks operating at ultrafast bit-rates for modern multiprocessor interconnects. The design is implemented in a prototype 8-node transparent shuffle network. The flow control in ... Keywords: Communication system interfaces, signalling, synchronization, clock and data recovery, PLLs

Ben Y. Yu; Paul Toliver; Robert J. Runser; Kung-Li Deng; Deyu Zhou; Ivan Glesk; Paul R. Prucnal

1998-01-01T23:59:59.000Z

263

Communication and Computation in Distributed CSP Algorithms  

E-Print Network (OSTI)

Communication and Computation in Distributed CSP Algorithms C`esar Fern`andez1 , Ram´on B´ejar1 in the context of networked distributed systems. In order to study the performance of Distributed CSP (DisCSP consider two complete DisCSP algorithms: asynchronous backtracking (ABT) and asynchronous weak commitment

Krishnamachari, Bhaskar

264

Tightly Coupled Accelerators Architecture for Minimizing Communication Latency among Accelerators  

Science Conference Proceedings (OSTI)

In recent years, heterogeneous clusters using accelerators have been widely used in high performance computing systems. In such clusters, inter-node communication among accelerators requires several memory copies via CPU memory, and the communication ... Keywords: GPGPU, Accelerator Computing, Interconnection Network, PCI Express, Remote DMA, CUDA, GPU Direct

Toshihiro Hanawa, Yuetsu Kodama, Taisuke Boku, Mitsuhisa Sato

2013-05-01T23:59:59.000Z

265

Interacting with audio streams for entertainment and communication  

Science Conference Proceedings (OSTI)

We present a new model of interactive audio for entertainment and communication. A new device called the DJammer and its associated technologies are described. The DJammer introduces the idea of provisioning mobile users to interact cooperatively with ... Keywords: connectivity, context awareness, digital content, distributed multimedia communication, distributed systems, mobility, network aggregation, peer-to-peer, rich media

Mat C. Hans; Mark T. Smith

2003-11-01T23:59:59.000Z

266

Activity detection for information access to oral communication  

Science Conference Proceedings (OSTI)

Oral communication is ubiquitous and carries important information yet it is also time consuming to document. Given the development of storage media and networks one could just record and store a conversation for documentation. The question is, however, ... Keywords: activity, dialogue processing, information access, oral communication, speech

Klaus Ries; Alex Waibel

2001-03-01T23:59:59.000Z

267

Survey A survey of routing protocols for smart grid communications  

Science Conference Proceedings (OSTI)

With the recent initiatives to upgrade the existing power grid to the Smart Grid (SG), there has been a significant interest in the design and development of an efficient communications infrastructure for connecting different components of the SG. In ... Keywords: HANs, NANs, Routing, Smart grid, Smart grid communications network, WANs

Nico Saputro; Kemal Akkaya; Suleyman Uludag

2012-07-01T23:59:59.000Z

268

Smart grid communications architecture: a survey and challenges  

Science Conference Proceedings (OSTI)

With an increasing interest from both the academic and industrial communities, this article systematically investigates developments in communication technology for the smart grid. Smart grid can be defined as an electric system that uses information, ... Keywords: cognitive communications, demand response, heterogeneous wireless networks, smart grid

Zoran Bojkovic; Bojan Bakmaz

2012-04-01T23:59:59.000Z

269

Graph anomalies in cyber communications  

Science Conference Proceedings (OSTI)

Enterprises monitor cyber traffic for viruses, intruders and stolen information. Detection methods look for known signatures of malicious traffic or search for anomalies with respect to a nominal reference model. Traditional anomaly detection focuses on aggregate traffic at central nodes or on user-level monitoring. More recently, however, traffic is being viewed more holistically as a dynamic communication graph. Attention to the graph nature of the traffic has expanded the types of anomalies that are being sought. We give an overview of several cyber data streams collected at Los Alamos National Laboratory and discuss current work in modeling the graph dynamics of traffic over the network. We consider global properties and local properties within the communication graph. A method for monitoring relative entropy on multiple correlated properties is discussed in detail.

Vander Wiel, Scott A [Los Alamos National Laboratory; Storlie, Curtis B [Los Alamos National Laboratory; Sandine, Gary [Los Alamos National Laboratory; Hagberg, Aric A [Los Alamos National Laboratory; Fisk, Michael [Los Alamos National Laboratory

2011-01-11T23:59:59.000Z

270

Consumer Device Communications Stability Assessment: Communications Reliability Evaluation for End Devices  

Science Conference Proceedings (OSTI)

This project examined issues related to establishing and maintaining reliable long-term communication with end-use devices for load management purposes. The impetus for this project was a broad set of challenges encountered by utilities conducting pilots and projects based on potential new communication technologies and architectures. The challenges were not limited to a specific protocol or media but appeared in a variety of scenarios, particularly those involving home area networks or LANs that ...

2013-12-19T23:59:59.000Z

271

The Maximum Flow Network Interdiction Problem: Valid Inequalities ...  

E-Print Network (OSTI)

applications in identifying critical infrastructure in supply (e.g., food, energy, medicine), domestic service (e.g., police, fire, EMS) and communication networks [6].

272

SURVIVABLE GREEN OPTICAL BACKBONE NETWORKS WITHSHARED BACKUP PROTECTION.  

E-Print Network (OSTI)

?? With the rapidly growing power consumption in Information and Communication Technology (ICT), energy-efficient solutions in telecom networks have become increasingly important. As a part (more)

Sadat Jalalinia, Shabnam

2012-01-01T23:59:59.000Z

273

Building and measuring a high performance network architecture  

E-Print Network (OSTI)

Tim Toole, Deputy Chair, Sandia National Laboratories EliNetwork Security Chair, Sandia National Laboratories JonQwest Communications, Sandia National Laboratory (DOE),

2001-01-01T23:59:59.000Z

274

Power-Rate-Distortion Analysis Of Wireless Visual Sensor Network.  

E-Print Network (OSTI)

??The emergence of low-cost and mature technologies in wireless communication, visual sensor devices, and digtial signal processing, facilitates the potential of wirelss sensor networks (WSN). (more)

Shaw, William

2008-01-01T23:59:59.000Z

275

Eventdriven, Rolebased Mobility in Disaster Recovery Networks  

E-Print Network (OSTI)

-1-59593-737-7/07/0009 ...$5.00. disaster response scenarios, understanding communication patterns in such networks is criticalEvent­driven, Role­based Mobility in Disaster Recovery Networks Samuel C. Nelson, Albert F. Harris important tools in understanding the com- plex characteristics of disaster recovery networks is simula- tion

Kravets, Robin

276

LUSTER: wireless sensor network for environmental research  

Science Conference Proceedings (OSTI)

Environmental wireless sensor network (EWSN) systems are deployed in potentially harsh and remote environments where inevitable node and communication failures must be tolerated. LUSTER---Light Under Shrub Thicket for Environmental Research---is a system ... Keywords: LiteTDMA, architecture, environmental science, implementation, mote, network protocol, storage, validation, wireless sensor network

L. Selavo; A. Wood; Q. Cao; T. Sookoor; H. Liu; A. Srinivasan; Y. Wu; W. Kang; J. Stankovic; D. Young; J. Porter

2007-11-01T23:59:59.000Z

277

Design and experimental evaluation of a vehicular network based on NEMO and MANET  

Science Conference Proceedings (OSTI)

Mobile Ad hoc Network (MANET) routing protocols and Network Mobility (NEMO) Basic Support are considered key technologies for vehicular networks. MANEMO, that is, the combination of MANET (for infrastructureless communications) and NEMO (for infrastructure-based ...

Manabu Tsukada; Jos Santa; Olivier Mehani; Yacine Khaled; Thierry Ernst

2010-03-01T23:59:59.000Z

278

ORISE: Public Health Communication  

NLE Websites -- All DOE Office Websites (Extended Search)

Communication Communication Public Health Communication The Oak Ridge Institute for Science and Education (ORISE) assists government agencies and organizations in addressing public health challenges by developing evidence-based communication programs and social marketing initiatives that resonate with target populations. Because approximately half of American adults do not understand basic health information, ORISE develops the types of messages that will attract attention and motivate people to address their personal and family health. ORISE also develops and executes evidence-based and culturally-competent public health communication programs that help change behaviors and result in healthier lifestyles. Communication Planning and Products Public health organizations are faced with increasing demands for

279

Media & Communications Office  

NLE Websites -- All DOE Office Websites (Extended Search)

Media & Communications Office Media & Communications Office Newsroom Photos Image Library Historic Images Photo Permissions Videos Fact Sheets Lab History News Categories Contacts Media & Communications Office news Part of the Community, Education, Government & Public Affairs Directorate, the Media & Communications Office provides information about Brookhaven National Laboratory to internal and external audiences through numerous communications vehicles. Our staff promotes Brookhaven's international reputation as a center for scientific excellence and innovation. We also publicize information about Laboratory events, policies and procedures. News Releases Media and Communications prepares all of the news releases on the Laboratory's science discoveries, announcements, events, and awards.

280

Future Communications Needs | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Future Communications Needs Future Communications Needs Chart of Oncor Electric Delivery's Future Communications Needs Future Communications Needs More Documents & Publications...

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

On the role of feedback in network coding  

E-Print Network (OSTI)

Network coding has emerged as a new approach to operating communication networks, with a promise of improved efficiency in the form of higher throughput, especially in lossy conditions. In order to realize this promise in ...

Sundararajan, Jay Kumar, 1982-

2009-01-01T23:59:59.000Z

282

Service and Network Management Interworking in Future Wireless Systems  

Science Conference Proceedings (OSTI)

The need for seamless communications in future wireless networks imposes the development of distributed management systems, in which we can distinguish between different business entities, the Service and Network Providers. Such a highly dynamic environment ...

V. Tountopoulos; Vera Stavroulaki; Panagiotis Demestichas; Nikolas Mitrou; Michael E. Theologou

2002-05-01T23:59:59.000Z

283

Event-triggered distributed algorithms for network optimization  

Science Conference Proceedings (OSTI)

Many existing distributed algorithms for network optimization problems often rely on the fact that, if the communications between subsystems are frequent enough, then the state of the network will converge to its optimum asymptotically. This ...

Pu Wan / Michael D. Lemmon

2010-01-01T23:59:59.000Z

284

Broadcasting and transmission coordination for ad hoc and sensor networks  

Science Conference Proceedings (OSTI)

This thesis studies the performance benefit of coordination in wireless sensor networks (WSNs) and ad hoc networks (AHNs). WSNs are often comprised of a large number of inexpensive nodes with short battery life and limited communication and processing ...

Ananth V. Kini / Steven P. Weber

2008-01-01T23:59:59.000Z

285

Handoff In Mobile ATM Networks: A Framework for Performance Optimization  

Science Conference Proceedings (OSTI)

Current handoff rerouting techniques in Mobile ATM networks fail to optimize some or all of the following parameters: handoff latency, route length, computational complexity, communication disruption period, network buffer requirements,a nd bandwidth ...

Sirisha R. Medidi; Forouzan Golshani

2002-06-01T23:59:59.000Z

286

Energy scalability of on-chip interconnection networks  

E-Print Network (OSTI)

On-chip interconnection networks (OCN) such as point-to-point networks and buses form the communication backbone in multiprocessor systems-on-a-chip, multicore processors, and tiled processors. OCNs consume significant ...

Konstantakopoulos, Theodoros K., 1977-

2007-01-01T23:59:59.000Z

287

Energy-efficient connected-coverage in wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper addresses the target coverage problem inWireless Sensor Networks (WSNs). Communication and sensing consume energy, therefore, efficient power management can extend network lifetime. In this paper, we consider a large number of sensors ...

Ionut Cardei; Mihaela Cardei

2008-05-01T23:59:59.000Z

288

Modular Anomaly Detection for Smartphone Ad hoc Communication  

E-Print Network (OSTI)

a mobile ad hoc network (MANET). While intrusion detection in MANETs is typically evaluated with network. The study shows the feasibility of the statistics-based anomaly detection regime, having low CPU usage, among others, has been focused on studies of energy and bandwidth constrained communication using

289

Development of the communication/information infrastructure at the academic institution  

Science Conference Proceedings (OSTI)

The quality and functionality of the communication/information infrastructure is essential for the development of the academic institution. The status of the academic institution and its relationship with other subjects such as government institutions ... Keywords: Academic institution, Academic networking, Communication/information infrastructure, Wireless local area network

Dinko Begusic; Nikola Rozic; Hrvoje Dujmic

2003-03-01T23:59:59.000Z

290

Smart Grid Communications: Overview of Research Challenges, Solutions, and Standardization Activities  

E-Print Network (OSTI)

Optimization of energy consumption in future intelligent energy networks (or Smart Grids) will be based on grid-integrated near-real-time communications between various grid elements in generation, transmission, distribution and loads. This paper discusses some of the challenges and opportunities of communications research in the areas of smart grid and smart metering. In particular, we focus on some of the key communications challenges for realizing interoperable and future-proof smart grid/metering networks, smart grid security and privacy, and how some of the existing networking technologies can be applied to energy management. Finally, we also discuss the coordinated standardization efforts in Europe to harmonize communications standards and protocols.

Fan, Zhong; Gormus, Sedat; Efthymiou, Costas; Kalogridis, Georgios; Sooriyabandara, Mahesh; Zhu, Ziming; Lambotharan, Sangarapillai; Chin, Woon Hau

2011-01-01T23:59:59.000Z

291

Atmospheric Laser Communication  

Science Conference Proceedings (OSTI)

Atmospheric laser communication, often referred to as free-space optics (FSO) or free-space laser (FSL) communication, is similar to fiber optic cable in terms of carrier wavelength and bandwidth capability, but data are transmitted directly ...

Kenneth W. Fischer*Michael R. Witiw; Jeffrey A. Baars+; T. R. Oke

2004-05-01T23:59:59.000Z

292

Building a wireless network infrastructure under budget constraints  

Science Conference Proceedings (OSTI)

This paper examines wireless networking and provides a case study of a wireless network infrastructure's development at an urban university of 11,000 students. The University of Houston Downtown (UHD) incorporated wireless technology to help ... Keywords: budget constraints, case study, curricula-related products, e-learning, higher education, m-learning, mobile communications, mobile learning, mobile technology, urban university, wireless communications, wireless network infrastructure, wireless networks

Richard A. McMahon; Peter D. DeVries; P. Pete Chong

2005-12-01T23:59:59.000Z

293

Public Safety Communication Systems  

Science Conference Proceedings (OSTI)

... integrate legacy communication and information systems and ... will support system analysis and troubleshooting ... create a global market for equipment ...

2012-12-13T23:59:59.000Z

294

Powerline Communications Assessment  

Science Conference Proceedings (OSTI)

This report provides background on the technology and development of power line communications for utility automation and customer communications. The report presents technical information on power line technology development that can be used in utility decision making with respect to research, development, standards, and use of power lines as communications media for advanced applications.

2009-12-23T23:59:59.000Z

295

Scientometrics and Communication Theory: Towards Theoretically Informed Indicators  

E-Print Network (OSTI)

A theory of citations should not consider cited and/or citing agents as its sole subject of study. One is able to study also the dynamics in the networks of communications. While communicating agents (e.g., authors, laboratories, journals) can be made comparable in terms of their publication and citation counts, one would expect the communication networks not to be homogeneous. The latent structures of the network indicate different codifications that span a space of possible 'translations'. The various subdynamics can be hypothesized from an evolutionary perspective. Using the network of aggregated journal-journal citations in Science & Technology Studies as an empirical case, the operation of such subdynamics can be demonstrated. Policy implications and the consequences for a theory-driven type of scientometrics will be elaborated.

Leydesdorff, Loet

2010-01-01T23:59:59.000Z

296

Proposal of CSP based Network Design and Construction  

E-Print Network (OSTI)

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

Fukunaga, Chikara

297

Vampire Attacks: Draining Life from Wireless Ad Hoc Sensor Networks  

Science Conference Proceedings (OSTI)

Ad hoc low-power wireless networks are an exciting research direction in sensing and pervasive computing. Prior security work in this area has focused primarily on denial of communication at the routing or medium access control levels. This paper explores ... Keywords: Denial of service, security, routing, ad hoc networks, sensor networks, wireless networks

Eugene Y. Vasserman; Nicholas Hopper

2013-02-01T23:59:59.000Z

298

A middleware-based approach for heterogeneous wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) are networked embedded systems that use small size devices with some processing and short-range radio communication capabilities for monitoring and controlling systems and environments. However, languages and IDE (Integrated ... Keywords: heterogeneous networks, middleware, wireless sensor networks

F. Graziosi; L. Pomante; D. Pacifico

2008-07-01T23:59:59.000Z

299

Overlapping communities in dynamic networks: their detection and mobile applications  

Science Conference Proceedings (OSTI)

Many practical problems on Mobile networking, such as routing strategies in MANETs, sensor reprogramming in WSNs and worm containment in online social networks (OSNs) share an ubiquitous, yet interesting feature in their organizations: community structure. ... Keywords: communication network, community detection, forwarding routing strategies, mobile network, worm containment

Nam P. Nguyen; Thang N. Dinh; Sindhura Tokala; My T. Thai

2011-09-01T23:59:59.000Z

300

Mitigating multi-path fading in a mobile mesh network  

Science Conference Proceedings (OSTI)

By using robots as routers, a team of networked robots can provide a communication substrate to establish a wireless mesh network. The mobile mesh network can autonomously optimize its configuration, increasing performance. One of the main sources of ... Keywords: Complex environments, Distributed optimization, Experimental and prototype results, Mobile and wireless ad-hoc networks, Multi-path fading

Marcos A. M. Vieira, Matthew E. Taylor, Prateek Tandon, Manish Jain, Ramesh Govindan, Gaurav S. Sukhatme, Milind Tambe

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Agent-based social networking for mobile user  

Science Conference Proceedings (OSTI)

Nowadays, social network services play an important role in users' everyday lives. This is especially emphasised in lives of users that belong to Generation Y. Young people often communicate and share various personal information with their family, ... Keywords: MAS, agent-based systems, agents, m-users, mobile networks, mobile users, multi-agent systems, social networking, social networks, software agents

Rebeka Belavic; Marko Basuga; Vedran Podobnik; Ana Petric; Ignac Lovrek

2010-11-01T23:59:59.000Z

302

Communication: the neglected technical skill?  

Science Conference Proceedings (OSTI)

In this paper we discuss the importance of communication in software development. Communication has long been recognized as an important element of a successful software project. The quality of communication within the development team and between the ... Keywords: CMM, communication

Tracy Hall; David Wilson; Austen Rainer; Dorota Jagielska

2007-04-01T23:59:59.000Z

303

How Evolving Network Access and Network Management Technologies are Redefining the Competitive Wireless Markets  

Science Conference Proceedings (OSTI)

This paper examines some of the key problems users encounter when accessing current generation wireless networks. Using a case study of a hypothetical user, the authors explore the emerging services and the new broadband wireless network technologies ... Keywords: Autonomic Communications, Broadband Wireless Access Technologies, Cognitive Wireless Networks, Short and Long-Term Service Contracts, Two-Sided Markets, User-Centric Services

Fernando Beltrn; Jairo A. Gutirrez; Jos Luis Mels

2011-07-01T23:59:59.000Z

304

An Integrated Modeling Framework for Exploring Network Reconfiguration of Distributed Controlled Homogenous Power Inverter Network using Composite Lyapunov Function Based Reachability Bound  

Science Conference Proceedings (OSTI)

We describe an integrated modeling framework for an interactive power network (IPN) consisting of a power network (PN) and a wireless communication network (WCN). The PN is modeled using a set of piecewise linear (PWL) equations. The WCN is modeled using ... Keywords: Lyapunov stability, Markov-chain model, communication network, distributed control systems, electric power network, joint optimization, linear matrix inequality, optimization, piecewise linear systems, reaching conditions, stability, switching power converters, wireless

Sudip K. Mazumder; Muhammad Tahir; Kaustuva Acharya

2010-02-01T23:59:59.000Z

305

On Building Inexpensive Network Capabilities  

Science Conference Proceedings (OSTI)

There are many deployed approaches for blocking unwanted traffic, either once it reaches the recipient's network, or closer to its point of origin. One of these schemes is based on the notion of traffic carrying capabilities that grant access to a network and/or end host. However, leveraging capabilities results in added complexity and additional steps in the communication process: Before communication starts a remote host must be vetted and given a capability to use in the subsequent communication. In this paper, we propose a lightweight mechanism that turns the answers provided by DNS name resolution---which Internet communication broadly depends on anyway---into capabilities. While not achieving an ideal capability system, we show the mechanism can be built from commodity technology and is therefore a pragmatic way to gain some of the key benefits of capabilities without requiring new infrastructure.

Shue, Craig A [ORNL; Kalafut, Prof. Andrew [Grand Valley State University (GVSU), Michigan; Allman, Mark [International Computer Science Institute (ICSI); Taylor, Curtis R [ORNL

2011-01-01T23:59:59.000Z

306

CS 535- Wireless Network Security  

E-Print Network (OSTI)

This is a 3-credit course that focuses on security and privacy issues in wireless networks and systems. Generally the security of MAC and especially upper layers are considered in this class. This course is not intended to cover cryptography in detail, but an overview of cryptography will be given at the beginning of the course so that the students who do not know cryptography would have sufficient information to understand the rest of the course. Although the catalogue information for this course (see below) several sub areas of wireless network security, in this course we will focus on ad hoc and sensor network security. Catalogue Data: This course covers security and privacy issues in wireless networks and systems, such as cellular networks, wireless LANs, wireless PANs, mobile ad hoc networks, vehicular networks, satellite networks, wireless mesh networks, sensor networks and RFID systems. Security problems of MAC and especially upper layers will be emphasized. Attacks and proposed solutions at several layers, authentication, key distribution and key management, secure routing, selfish and malicious behaviors, and secure group communication are analyzed for applicable wireless network types. A short overview of cryptography and wireless networking principles will be given at the beginning of the course. Prerequisite: Formally there is no prerequisite for this course, but students are expected to come with undergrad level computer networks background. Moreover, computer-programming expertise is necessary. Instructor: Schedule:

Albert Levi

2008-01-01T23:59:59.000Z

307

Advanced mobile networking, sensing, and controls.  

SciTech Connect

This report describes an integrated approach for designing communication, sensing, and control systems for mobile distributed systems. Graph theoretic methods are used to analyze the input/output reachability and structural controllability and observability of a decentralized system. Embedded in each network node, this analysis will automatically reconfigure an ad hoc communication network for the sensing and control task at hand. The graph analysis can also be used to create the optimal communication flow control based upon the spatial distribution of the network nodes. Edge coloring algorithms tell us that the minimum number of time slots in a planar network is equal to either the maximum number of adjacent nodes (or degree) of the undirected graph plus some small number. Therefore, the more spread out that the nodes are, the fewer number of time slots are needed for communication, and the smaller the latency between nodes. In a coupled system, this results in a more responsive sensor network and control system. Network protocols are developed to propagate this information, and distributed algorithms are developed to automatically adjust the number of time slots available for communication. These protocols and algorithms must be extremely efficient and only updated as network nodes move. In addition, queuing theory is used to analyze the delay characteristics of Carrier Sense Multiple Access (CSMA) networks. This report documents the analysis, simulation, and implementation of these algorithms performed under this Laboratory Directed Research and Development (LDRD) effort.

Feddema, John Todd; Kilman, Dominique Marie; Byrne, Raymond Harry; Young, Joseph G.; Lewis, Christopher L.; Van Leeuwen, Brian P.; Robinett, Rush D. III; Harrington, John J.

2005-03-01T23:59:59.000Z

308

Definition: Two-Way Communications (High Bandwidth) | Open Energy  

Open Energy Info (EERE)

Two-Way Communications (High Bandwidth) Two-Way Communications (High Bandwidth) Jump to: navigation, search Dictionary.png Two-Way Communications (High Bandwidth) A two-way communications infrastructure that can network one or more parts of the smart grid via secure, high speed, high bandwidth connections. This infrastructure system serves as the backbone of the customer systems, AMI, distribution, and transmission smart grid systems.[1] View on Wikipedia Wikipedia Definition A smart meter is usually an electrical meter that records consumption of electric energy in intervals of an hour or less and communicates that information at least daily back to the utility for monitoring and billing purposes. Smart meters enable two-way communication between the meter and the central system. Unlike home energy monitors,

309

System architecture directions for networked sensors  

Science Conference Proceedings (OSTI)

Technological progress in integrated, low-power, CMOS communication devices and sensors makes a rich design space of networked sensors viable. They can be deeply embedded in the physical world and spread throughout our environment like smart dust. The ...

Jason Hill; Robert Szewczyk; Alec Woo; Seth Hollar; David Culler; Kristofer Pister

2000-12-01T23:59:59.000Z

310

Designing manycore processor networks using silicon photonics  

E-Print Network (OSTI)

We present a vertical integration approach for designing silicon photonic networks for communication in manycore systems. Using a top-down approach we project the photonic device requirements for a 64-tile system designed ...

Stojanovic, Vladimir Marko

311

Maximizing degrees of freedom in wireless networks  

E-Print Network (OSTI)

We consider communication from a single source to a single destination in a wireless network with fading. Both source and destination have multiple antennas. The information reaches the destination through a sequence of ...

Borade, Shashibhushan Prataprao, 1981-

2004-01-01T23:59:59.000Z

312

Krill: An exploration in underwater sensor networks  

E-Print Network (OSTI)

While sensor networks have now become very popular on land, the underwater environment still poses some difficult problems. Communication is one of the difficult challenges under water. There are two options:

I Vasilescu; K Kotay; D Rus; L Overs; P Sikka; M Dunbabin; P Chen; P Corke

2005-01-01T23:59:59.000Z

313

Electronic shepherd - a low-cost, low-bandwidth, wireless network system  

Science Conference Proceedings (OSTI)

This paper reports a new novel low-cost, wireless communication network system, called the "Electronic Shepherd" (ES). The system is innovative in the way that it supports flock behavior, meaning that a flock leader monitors the state of the other elements ... Keywords: GPRS, GPS, animal tracking, cost-effective communication, low-power equipment, rural computing, short-range communication, wireless network

Bjrn Thorstensen; Tore Syversen; Trond-Are Bjrnvold; Tron Walseth

2004-06-01T23:59:59.000Z

314

Security in Wireless Data Networks: A Survey Paper  

E-Print Network (OSTI)

Security in Wireless Data Networks: A Survey Paper Abdel-Karim R. Al Tamimi abdelkarim.tamimi@gmail.com Abstract Both security and wireless communication will remain an interesting subject for years to come jeopardizing the communicated content. This paper illustrates the key concepts of security, wireless networks

Jain, Raj

315

Computer Networking Group | Stanford Synchrotron Radiation Lightsource  

NLE Websites -- All DOE Office Websites (Extended Search)

Networking Group Networking Group Do you need help? For assistance please submit a CNG Help Request ticket. CNG Logo Chris Ramirez SSRL Computer and Networking Group Manager (650) 926-2901 | email Jerry Camuso SSRL Computer and Networking (650) 926-2994 | email Networking Support The Networking group provides connectivity and communications services for SSRL. The services provided by the Networking Support Group include: Local Area Network support for cable and wireless connectivity. Installation and maintenance of network printers and queues. Telephony installations and support. Printing Support The Networking group provides printer maintenance and support for SSRL Beamline Printers and plotters. The following models are supported: HP - Designjet large format plotters HP - Color and B/W Laserjet, Inkjet, Deskjet, Officejet

316

FUTURE POWER GRID INITIATIVE Next Generation Network  

E-Print Network (OSTI)

designed by PNNL and currently being deployed in the AEP gridSMART Demonstration Project, and » developed that will position PNNL as the leader in modeling and planning power grid data communication networks. External users scenarios and testing of communication requirements with smart grid investments. November 2012 PNNL-SA-90012

317

Local, sustainable, small-scale cellular networks  

Science Conference Proceedings (OSTI)

Over five billion people are active cellular subscribers, spending over a trillion dollars a year on communications. Despite this, hundreds of millions of people are still not connected. Implicit in these networks is a top-down design, with large nation-scale ... Keywords: information and communications technology for development, legal factors

Kurtis Heimerl, Shaddi Hasan, Kashif Ali, Eric Brewer, Tapan Parikh

2013-12-01T23:59:59.000Z

318

Fusion Communication Summit cover  

NLE Websites -- All DOE Office Websites (Extended Search)

COMMUNICATIONS SUMMIT for U.S. Magnetic Fusion September 12-13, 2012 Princeton University - Frist Campus Center Princeton, New Jersey, USA Mission Statement Announcements...

319

Report: EM Communications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EM Communications EM Communications August 24, 2006 Submitted by: The EMAB Communications Team Background: At the March 2006 Environmental Management Advisory Board (EMAB) meeting, the Assistant Secretary for Environmental Management (EM) and his staff unveiled the proposed organization for EM. The purpose of the reorganization is to structure the workforce across the EM complex in a way that could ensure maximum and sustained focus on EM's mission -"to complete the cleanup of the contaminated nuclear weapons manufacturing and testing sites across the United States". After the presentation, EMAB members noted that a separate communications function was not included in the proposed organization, which EM staff acknowledged was a possible, unmet need.

320

Communications Scorecard for EPA's  

NLE Websites -- All DOE Office Websites (Extended Search)

and final weigh-ins. Competitors can get points by communicating the importance of saving energy to their stakeholders, whether they're employees, tenants, students,...

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Business Data Communications  

Science Conference Proceedings (OSTI)

From the Book:PREFACE: Preface Background Four trends have made a solid understanding of the fundamentals of data communications essential to business and information management students: The ...

William Stallings

1990-11-01T23:59:59.000Z

322

Multimodal analysis of body sensor network data streams for real-time healthcare  

Science Conference Proceedings (OSTI)

Fundamental advances in low power circuits, wireless communication, physiological sensor design, and multimedia stream processing, have led to the deployment of body sensor networks for the real-time monitoring of individual health in diverse settings. ... Keywords: body sensor networks, multi-modal analysis, sensor networks, systems and communications

Manoj K. Garg; Duk-Jin Kim; Deepak S. Turaga; Balakrishnan Prabhakaran

2010-03-01T23:59:59.000Z

323

Applications of WiMAX-based wireless mesh network in monitoring wind farms  

Science Conference Proceedings (OSTI)

This paper has studied the feasibility of applying World Interoperability for Microwave Access (WiMAX) based Wireless Mesh Networks (WMNs) in monitoring wind farms. WMNs provide a dynamic topology which meets the requirements of communications ... Keywords: WMNs, WiMAX, World Interoperability for Microwave Access, communications, renewable energy, simulation, wind energy, wind farm monitoring, wind farms, wind power, wireless mesh networks, wireless networks

Gang Zheng; Hongbing Xu; Xinheng Wang; Jianxiao Zou

2010-09-01T23:59:59.000Z

324

An efficient reliable broadcasting protocol for wireless mobile ad hoc networks  

Science Conference Proceedings (OSTI)

The mobile ad hoc network (MANET) has recently been recognized as an attractive network architecture for wireless communication. Reliable broadcast is an important operation in MANET (e.g., giving orders, searching routes, and notifying important signals). ... Keywords: Broadcast storm, Mobile ad hoc network (MANET), Mobile computing, Reliable broadcast, Wireless communication

Chih-Shun Hsu; Yu-Chee Tseng; Jang-Ping Sheu

2007-04-01T23:59:59.000Z

325

Asynchronous group key distribution on top of the cc2420 security mechanisms for sensor networks  

Science Conference Proceedings (OSTI)

A sensor network is a network consisting of small, inexpensive, low-powered sensor nodes that communicate to complete a common task. Sensor nodes are characterized by having limited communication and computation capabilities, energy, and storage. They ... Keywords: cc2420 security, group key distribution, sensor network security

Morten Tranberg Hansen

2009-03-01T23:59:59.000Z

326

Processus communicants Communication synchrone CSP/CCS/-calcul  

E-Print Network (OSTI)

Processus communicants Communication synchrone CSP/CCS/-calcul Rendez-vous étendu Ada Huitième partie Processus communicants CSP/Ada Systèmes concurrents 2 / 44 #12;Processus communicants Communication synchrone CSP/CCS/-calcul Rendez-vous étendu Ada Principes Synchronisation Désignation

Grigoras, .Romulus

327

An energy efficient clustering protocol for routing in Wireless Sensor Network  

Science Conference Proceedings (OSTI)

In Wireless Sensor Network (WSN), the power supply is generally a non-renewable battery, consequently, energy effectiveness is a crucial factor. To maximise the battery life and therefore the duration of network service, a robust wireless ... Keywords: WSNs, battery life, dynamic clustering, energy efficiency, energy efficient clustering, network lifetime, simulation, wireless communications, wireless networks, wireless sensor networks

Ouadoudi Zytoune; Mohamed El Aroussi; Driss Aboutajdine

2011-12-01T23:59:59.000Z

328

Bounding errors introduced by clustering of customers in closed product-form queuing networks  

Science Conference Proceedings (OSTI)

Product-form queuing network models have been widely used to model systems with shared resources such as computer systems (both centralized and distributed), communication networks, and flexible manufacturing systems. Closed multichain product-form networks ... Keywords: balance equation, closed network, clustering, error bound, product-form, quasi-reversibility, queuing network

William C. Cheng; Richard R. Muntz

1996-07-01T23:59:59.000Z

329

A unified architectural model for on-demand user-centric communications  

E-Print Network (OSTI)

The rapid growth of networking technologies has drastically changed the way we communicate and enabled a wide range of communication applications. However, these applications have been conceived, designed, and developed separately with little or no connection to each other, resulting in a fragmented and incompatible set of technologies and products. Building new communication applications requires a lengthy and costly development cycle, which severely limits the pace of innovation. Current applications are also typically incapable of responding to changes in user communication needs as well as changing network infrastructure and device technology. In this article, we address these issues and present the Unified Communication Model (UCM), a new and user-centric approach for conceiving, generating, and delivering communication applications on-demand. We also introduce a prototype design and implementation of UCM and discuss future research directions toward realizing next generation communication applications. 1.

Yi Deng; S. Masoud Sadjadi; Peter Clarke; Chi Zhang; Vagelis Hristidis; Raju Rangaswami; Nagarajan Prabakar

2005-01-01T23:59:59.000Z

330

Mobile communications in China  

Science Conference Proceedings (OSTI)

China now has the world's largest mobile communications market. In the past several years, a series of major reforms have been carried out in China's telecom industry, aiming at separating administrative and enterprise functions, breaking monopoly ... Keywords: 3G mobile services, China, TD-SCDMA, WTO, World Trade Organization, mobile communications

Ying Dong; Mingshu Li

2004-12-01T23:59:59.000Z

331

The influence of organizational hierarchy and departmental structure on communication : the case of Kaplan and Norton's Balanced scorecard in a matrix organization  

E-Print Network (OSTI)

A large business requires efficient and effective internal communication among employees to achieve its goals. Dodds, Watts, and Sable (DWS) introduced a communication network model assessing information flow within a ...

Kopp, James Clayton

2010-01-01T23:59:59.000Z

332

Satellite-Based Quantum Communications  

SciTech Connect

Single-photon quantum communications (QC) offers the attractive feature of 'future proof', forward security rooted in the laws of quantum physics. Ground based quantum key distribution (QKD) experiments in optical fiber have attained transmission ranges in excess of 200km, but for larger distances we proposed a methodology for satellite-based QC. Over the past decade we have devised solutions to the technical challenges to satellite-to-ground QC, and we now have a clear concept for how space-based QC could be performed and potentially utilized within a trusted QKD network architecture. Functioning as a trusted QKD node, a QC satellite ('QC-sat') could deliver secret keys to the key stores of ground-based trusted QKD network nodes, to each of which multiple users are connected by optical fiber or free-space QC. A QC-sat could thereby extend quantum-secured connectivity to geographically disjoint domains, separated by continental or inter-continental distances. In this paper we describe our system concept that makes QC feasible with low-earth orbit (LEO) QC-sats (200-km-2,000-km altitude orbits), and the results of link modeling of expected performance. Using the architecture that we have developed, LEO satellite-to-ground QKD will be feasible with secret bit yields of several hundred 256-bit AES keys per contact. With multiple ground sites separated by {approx} 100km, mitigation of cloudiness over any single ground site would be possible, potentially allowing multiple contact opportunities each day. The essential next step is an experimental QC-sat. A number of LEO-platforms would be suitable, ranging from a dedicated, three-axis stabilized small satellite, to a secondary experiment on an imaging satellite. to the ISS. With one or more QC-sats, low-latency quantum-secured communications could then be provided to ground-based users on a global scale. Air-to-ground QC would also be possible.

Hughes, Richard J [Los Alamos National Laboratory; Nordholt, Jane E [Los Alamos National Laboratory; Mc Cabe, Kevin P [Los Alamos National Laboratory; Newell, Raymond T [Los Alamos National Laboratory; Pterson, Charles G [Los Alamos National Laboratory

2010-09-20T23:59:59.000Z

333

RPM §9.02. Operational Procedures for Computing and Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 Operational Procedures for Computing and Communications Revised 09/08 Communications and Networking Systems Communications and Networking Management ICS Voice Telephone System ICS Data-Switching System LBLnet ICS-Dedicated Wiring and Optical-Fiber Systems Public Address System Public Address System Announcements Radio Communications Systems Radio Paging Systems Radio Emissions Standards and Spectrum Management Card Access, Security, Alarms, and Surveillance Systems Video, Fiber-Optic, and Other Signal Systems Video Teleconferencing Remote Access Services Electronic Access Background Fundamental Principles and Characteristics Kinds of Access Forms of Electronic Publishing Use of Information Systems and Services Background Definitions Scope Fundamental Principles General Page and File Policy

334

Formalizing and Analyzing the Train-to-Wayside Network System for CBTC  

Science Conference Proceedings (OSTI)

In the development of communication based train control (CBTC) system, while communicating with the control center, the train must be assigned accurately to the wayside network. In order to verify the rigor of this process, the specification is analyzed ...

Guo Xie; Xinhong Hei; Hiroshi Mochizuki; Sei Takahashi; Hideo Nakamura

2012-11-01T23:59:59.000Z

335

Research Challenges and Applications for Underwater Sensor Networking  

E-Print Network (OSTI)

This paper explores applications and challenges for underwater sensor networks. We highlight potential applications to off-shore oilfields for seismic monitoring, equipment monitoring, and underwater robotics. We identify research directions in shortrange acoustic communications, MAC, time synchronization, and localization protocols for high-latency acoustic networks, longduration network sleeping, and application-level data scheduling. We describe our preliminary design on short-range acoustic communication hardware, and summarize results of high-latency time synchronization.

John Heidemann; Wei Ye; Jack Wills; Affan Syed; Yuan Li

2006-01-01T23:59:59.000Z

336

Topology management in ad hoc networks  

Science Conference Proceedings (OSTI)

The efficiency of a communication network depends not only on its control protocols, but also on its topology. We propose a distributed topology management algorithm that constructs and maintains a backbone topology based on a minimal dominating set ... Keywords: ad hoc networks, connected dominating set, minimum dominating set

Lichun Bao; J. J. Garcia-Luna-Aceves

2003-06-01T23:59:59.000Z

337

Parallel data transfer network controlled by a dynamically reconfigurable serial network  

DOE Patents (OSTI)

This patent is a real time high density data communication system designed to operate efficiently in a dynamically configurable, multiprocessor parallel processing environment. In this design a serial communication network is utilized to disseminate commands from a master processor to the slave processors, to control transmission of high density data, to effect communication protocol, and to monitor the status of each slave processor. A parallel channel communication network is utilized in conjunction with two triple port memories at each processor node in the system to efficiently transmit high density data for sustained or burst intervals without having to interleave communication control messages. Each processor node includes a transputer, a digital signal processor, a parallel transfer controller. A very low software overhead time for starting and ending the transfer of data is incurred using this design in contrast with a scalable coherent interface system in which 25% of transmission time is devoted to the communication protocol.

Crosetto, D.B.

1992-01-01T23:59:59.000Z

338

Ex parte Communication | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Communication Ex parte Communication Ex parte communication on AHAM's development of an ice maker energy test procedure Ex parte Communication More Documents & Publications...

339

A Game Theoretical Approach to Communication Security  

E-Print Network (OSTI)

Security solutions . . . . . . . . . . . . . . . .Practical security solutions . . . . . . . . . . . . .Communication security

Gueye, Assane

2011-01-01T23:59:59.000Z

340

Self-* in Multimedia Communication Overlays  

Science Conference Proceedings (OSTI)

Multimedia Communication Systems (MCSs) usually deploy complex data distribution overlays, making the efficient interchange of multimedia content possible. The time constraints imposed by interactive communications further complicate the management of ... Keywords: Autonomic computing, Multimedia Communication Systems, Overlays, Self-*, Taxonomy

Pelayo NuO; Juan C. Granda; Francisco J. SuRez; Daniel F. GarcA

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Noncollective communicator creation in MPI  

Science Conference Proceedings (OSTI)

MPI communicators abstract communication operations across application modules, facilitating seamless composition of different libraries. In addition, communicators provide the ability to form groups of processes and establish multiple levels of parallelism. ...

James Dinan; Sriram Krishnamoorthy; Pavan Balaji; Jeff R. Hammond; Manojkumar Krishnan; Vinod Tipparaju; Abhinav Vishnu

2011-09-01T23:59:59.000Z

342

Re: Implementing the National Broadband Plan by Studying the Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Studying the Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Alcatel-Lucent ("ALU") appreciates the opportunity to contribute to the Department of Energy's ("Department") Request for Information ("RFI")1 to better understand the communications requirements of utilities, including the requirements of Smart Grid Technology. ALU sees smart grid as one of several solutions offered by the technological advances and widespread deployment of broadband networks. While in its comments ALU addresses the narrow issues raised specifically in the Department's RFI, these comments also convey broader policy

343

CAT Communicator | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Division XSD Groups Industry Argonne Home Advanced Photon Source News Archives CAT Communicator CAT Communicator was a newsletter intended to provide APS information to...

344

ORISE: Crisis and Risk Communication  

NLE Websites -- All DOE Office Websites (Extended Search)

and Risk Communication Because a natural disaster, act of terrorism or other public emergency can happen without notice, having a planned, coordinated communication effort is...

345

Organizations and Networks | Open Energy Information  

Open Energy Info (EERE)

Organizations and Networks Organizations and Networks (Redirected from Gateway:International/Networks) Jump to: navigation, search Registered Technical and Research Organizations Networks Climate Eval "The website promotes active debate on areas relevant to evaluation of climate change and development evaluation by bringing relevant topics to a peer to peer discussion forum." Coordinated Low Emissions Assistance Network (CLEAN) CLEAN aims to improve communication and coordination by bringing together national and international organizations that are assisting developing countries with preparation and implementation of low greenhouse gas emission plans and strategies. This includes support for technology needs assessments, for low carbon and clean energy development plans, and

346

200 ORGANIZATIONAL CULTURE AND NETWORK EMBEDDEDNESS  

E-Print Network (OSTI)

A question that has been neglected in network research is where differences in network embeddedness come from. The network literature reveals that there are three key characteristics of embedded relationships: trust, open communication, and joint problem solving. On the basis of the sparse empirical studies of factors leading to network embeddedness, we identify organizational culture as a potentially important organizational-level factor. Building on empirical organizational culture studies we select ten dimensions of organizational culture that for theoretical and/or empirical reasons can be linked to network embeddedness, and formulate propositions concerning their effects.

G. Noorderhaven; Carla I. Koen; Sjoerd Beugelsdijk; Niels G. Noorderhaven; Carla I. Koen; Sjoerd Beugelsdijk

2002-01-01T23:59:59.000Z

347

An Intelligent Network Selection Strategy Based on MADM Methods in Heterogeneous Networks  

E-Print Network (OSTI)

Providing service continuity to the end users with best quality is a very important issue in the next generation wireless communications. With the evolution of the mobile devices towards a multimode architecture and the coexistence of multitude of radio access technologies (RAT's), the users are able to benefit simultaneously from these RAT's. However, the major issue in heterogeneous wireless communications is how to choose the most suitable access network for mobile's user which can be used as long as possible for communication. To achieve this issue, this paper proposes an intelligent network selection strategy which combines two multi attribute decision making (MADM) methods such as analytic network process (ANP) and the technique for order preference by similarity to an ideal solution (TOPSIS) method. The ANP method is used to find the differentiate weights of available networks by considering each criterion and the TOPSIS method is applied to rank the alternatives. Our new strategy for network selection...

Lahby, Mohamed; Adib, Abdellah; 10.5121/ijwmn.2012.4106

2012-01-01T23:59:59.000Z

348

Radio frequency fingerprinting commercial communication devices to enhance electronic security  

Science Conference Proceedings (OSTI)

There is a current shift toward protecting against unauthorised network access at the open systems interconnection physical layer by exploiting radio frequency characteristics that are difficult to mimic. This work addresses the use of RF 'fingerprints' ... Keywords: Fisher linear discriminant, OSI, PHY layer authentication, RF fingerprinting, RF forensics, SEI, access authorisation, anti-spoofing, burst detection, commercial communication devices, electronic security, feature generation, multiple discriminant analysis, network access, physical layer authentication, radio frequency fingerprinting, signal features, specific emitter identification, transient detection

William C. Suski II; Michael A. Temple; Michael J. Mendenhall; Robert F. Mills

2008-10-01T23:59:59.000Z

349

The Use of Demand-wise Shared Protection in Creating Topology Optimized High Availability Networks.  

E-Print Network (OSTI)

??In order to meet the availability requirements of modern communication networks, a number of survivability techniques were developed that adapt the demand-wise shared protection design (more)

Todd, Brody

2009-01-01T23:59:59.000Z

350

Technology Challenges in the Development of Wireless Personal Area Networks  

Science Conference Proceedings (OSTI)

Wireless personal area networks (WPANs) will be major components of the heterogeneous communication environment of the future. The devices in a WPAN must be low cost and operate for a long time from a battery. As a consequence, they pose demanding ... Keywords: 4G networks, packaging technology, processing technology, wireless personal area networks

Marc Engels

2002-08-01T23:59:59.000Z

351

Data sampling control, compression and query in sensor networks  

Science Conference Proceedings (OSTI)

Nodes in wireless sensor networks have very limited storage capacity, computing ability and battery power. Node failure and communication link disconnection occur frequently, which means weak services of the network layer. Sensed data is inaccurate which ... Keywords: data accuracy, data compression, data sampling, energy efficiency, power limitation, query, sampling frequency control, sensor networks

Jinbao Li; Jianzhong Li

2007-04-01T23:59:59.000Z

352

Hybrid trust and reputation management for sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are characterised by the distributed nature of their operation and the resource constraints on the nodes. Trust management schemes that are targeted at sensor networks need to be lightweight in terms of computational and communication ... Keywords: Reputation management, Sensor networks, Trust establishment

Efthimia Aivaloglou; Stefanos Gritzalis

2010-07-01T23:59:59.000Z

353

Cluster based dynamic routing on powerline carrier network  

Science Conference Proceedings (OSTI)

Topology of power line carrier network (PLCN) is complex, fast changeable and its channel is time-variant. To enhance the availability and effectiveness of network communication, a cluster based dynamic routing algorithm (CBDR) is proposed in the paper. ... Keywords: cluster algorithm, dynamic route, powerline carrier network, tree-topology

Hong Li; Wang Kensheng; Li Shurong; Zou Weixia; Zhou Zheng

2009-09-01T23:59:59.000Z

354

Minimum cost multiple multicast network coding with quantized rates  

Science Conference Proceedings (OSTI)

In this paper, we consider multiple multicast sessions with intra-session network coding where rates over all links are integer multiples of a basic rate. Although having quantized rates over communication links is quite common, conventional minimum ... Keywords: Decomposition algorithm, Multicast networks, Network coding

M. A. Raayatpanah; H. Salehi Fathabadi; B. H. Khalaj; S. Khodayifar

2013-04-01T23:59:59.000Z

355

Clustering social networks using interaction semantics and sentics  

Science Conference Proceedings (OSTI)

The passage from a static read-only Web to a dynamic read-write Web gave birth to a huge amount of online social networks with the ultimate goal of making communication easier between people with common interests. Unlike real world social networks, however, ... Keywords: NLP, sentic computing, social network analysis

Praphul Chandra; Erik Cambria; Amir Hussain

2012-07-01T23:59:59.000Z

356

Forward correction and fountain codes in delay-tolerant networks  

Science Conference Proceedings (OSTI)

Delay-tolerant ad hoc networks leverage the mobility of relay nodes to compensate for lack of permanent connectivity and thus enable communication between nodes that are out of range of each other. To decrease delivery delay, the information to be delivered ... Keywords: delay-tolerant networks (DTNs), forward correction, fountain codes, mobile ad hoc networks

Eitan Altman; Francesco De Pellegrini

2011-02-01T23:59:59.000Z

357

Adaptive design optimization of wireless sensor networks using genetic algorithms  

Science Conference Proceedings (OSTI)

We present a multi-objective optimization methodology for self-organizing, adaptive wireless sensor network design and energy management, taking into consideration application-specific requirements, communication constraints and energy-conservation characteristics. ... Keywords: Adaptive network design, Energy conservation, Genetic algorithms, Optimal design, Wireless sensor networks

Konstantinos P. Ferentinos; Theodore A. Tsiligiridis

2007-03-01T23:59:59.000Z

358

Underwater sensor networking: Research challenges and potential applications  

E-Print Network (OSTI)

This report summarizes our research directions in underwater sensor networks. We highlight potential applications to off-shore oilfields for seismic monitoring, equipment monitoring, and underwater robotics. We identify research directions in short-range acoustic communications, MAC, time synchronization, and localization protocols for highlatency acoustic networks, long-duration network sleeping, and application-level data scheduling. 1

John Heidemann; Yuan Li; Affan Syed; Jack Wills; Wei Ye

2006-01-01T23:59:59.000Z

359

Towards a routing framework in ad hoc space networks  

Science Conference Proceedings (OSTI)

A routing framework called Space Gateway Routing (SGR) is proposed for routing through Autonomous Regions (ARs) in ad hoc space networks. SGR has two integral parts: External SGR (ESGR) and Interior SGR (ISGR). ESGR ... Keywords: ad hoc networks, autonomous regions, contact allocation, data delivery, inter-region message scheduling, remote control messages, space communications, space gateway routing, space missions, space networks

Chao Chen; Zesheng Chen

2010-12-01T23:59:59.000Z

360

Distributed scheduling schemes for wireless mesh networks: A survey  

Science Conference Proceedings (OSTI)

An efficient scheduling scheme is a crucial part of Wireless Mesh Networks (WMNs)an emerging communication infrastructure solution for autonomy, scalability, higher throughput, lower delay metrics, energy efficiency, and other service-level guarantees. ... Keywords: Wireless mesh networks, ad hoc networks, cyclic access, distributed scheduling schemes, pseudo-random access, random access

Kanthaiah Sivapragasam Vijayalayan, Aaron Harwood, Shanika Karunasekera

2013-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

On Communication and Computation  

Science Conference Proceedings (OSTI)

Comparing technical notions of communication and computation leads to a surprising result, these notions are often not conceptually distinguishable. This paper will show how the two notions may fail to be clearly distinguished from each other. The most ...

Paul Bohan Broderick

2004-02-01T23:59:59.000Z

362

Communicating with dolphins  

NLE Websites -- All DOE Office Websites (Extended Search)

they are, we can't as yet understand their language any better than we do the bark of a dog. For a little more information on how we communicate with both dolphins and dogs,...

363

Programmable synchronous communications module  

SciTech Connect

The functional characteristics of a programmable, synchronous serial communications CAMAC module with buffering in block format are described. Both bit and byte oriented protocols can be handled in full duplex depending on the program implemented. The main elements of the module are a Signetics 2652 Multi-Protocol Communications Controller, a Zilog Z-808 8 bit microprocessor with PROM and RAM, and FIFOs for buffering. (FS)

Horelick, D.

1979-10-01T23:59:59.000Z

364

LANL application communication patterns  

SciTech Connect

This brief presentation describes the communication patterns used by a set of unclassified applications developed at Los Alamos National Laboratory: XNobel/XRAGE/RAGE/SAGE, Krak, Sweep3D, and Partisn. It mentions which processes communicate with which other processes, whether the application is typically run in a strong-scaling mode or a weak-scaling mode, what message sizes are commonly used, and how the application's performance changes at scale.

Pakiin, Scott [Los Alamos National Laboratory

2011-01-10T23:59:59.000Z

365

Network Upgrade for the SLC: PEP II Network  

SciTech Connect

The PEP-II control system required a new network to support the system functions. This network, called CTLnet, is an FDDI/Ethernet based network using only TCP/IP protocols. An upgrade of the SLC Control System micro communications to use TCP/IP and SLCNET would allow all PEP-II control system nodes to use TCP/IP. CTLnet is private and separate from the SLAC public network. Access to nodes and control system functions is provided by multi-homed application servers with connections to both the private CTLnet and the SLAC public network. Monitoring and diagnostics are provided using a dedicated system. Future plans and current status information is included.

Crane, M.; Call, M.; Clark, S.; Coffman, F.; Himel, T.; Lahey, T.; Miller, E.; Sass, R.; /SLAC

2011-09-09T23:59:59.000Z

366

Performance of variable bit rate wireless communication systems over Nakagami fading channels  

Science Conference Proceedings (OSTI)

Currently, several wireless standards, both for voice and data communications as well as wireless local area networks, achieve a variable bit rate by different combinations of either binary or non-binary modulation and convolutional codes having different ...

Patrick Count; Clark Robertson

2003-10-01T23:59:59.000Z

367

Energy-optimized image communication on resource-constrained sensor platforms  

Science Conference Proceedings (OSTI)

Energy-efficient image communication is one of the most important goals for a large class of current and future sensor network applications. This paper presents a quantitative comparison between the energy costs associated with 1) direct transmission ...

Dong-U Lee; Hyungjin Kim; Steven Tu; Mohammad Rahimi; Deborah Estrin; John D. Villasenor

2007-04-01T23:59:59.000Z

368

A survey of UNI signaling systems and protocols for ATM networks  

Science Conference Proceedings (OSTI)

The main aspect covered by signaling systems and protocols for ATM networks concerns the possibility to manage, maintain, and control a user-driven communication between arbitrary ATM end-systems connected to an ATM network. The tasks and procedures ...

Burkhard Stiller

1995-04-01T23:59:59.000Z

369

Apples-to-apples: a framework analysis for energy-efficiency in networks  

Science Conference Proceedings (OSTI)

Research on energy-efficiency of communication networks has already gained the attention of a broad research community. Specifically, we consider efforts towards improving environmental sustainability by making networks energyaware. An important step ...

Aruna Prem Bianzino; Anand Kishore Raju; Dario Rossi

2011-01-01T23:59:59.000Z

370

Energy Scalability of On-Chip Interconnection Networks in Multicore Architectures  

E-Print Network (OSTI)

On-chip interconnection networks (OCNs) such as point-to-point networks and buses form the communication backbone in systems-on-a-chip, multicore processors, and tiled processors. OCNs can consume significant portions of ...

Agarwal, Anant

2008-11-11T23:59:59.000Z

371

Relativistic Quantum Communication  

E-Print Network (OSTI)

In this Ph.D. thesis, I investigate the communication abilities of non-inertial observers and the precision to which they can measure parametrized states. I introduce relativistic quantum field theory with field quantisation, and the definition and transformations of mode functions in Minkowski, Schwarzschild and Rindler spaces. I introduce information theory by discussing the nature of information, defining the entropic information measures, and highlighting the differences between classical and quantum information. I review the field of relativistic quantum information. We investigate the communication abilities of an inertial observer to a relativistic observer hovering above a Schwarzschild black hole, using the Rindler approximation. We compare both classical communication and quantum entanglement generation of the state merging protocol, for both the single and dual rail encodings. We find that while classical communication remains finite right up to the horizon, the quantum entanglement generation tends to zero. We investigate the observers' abilities to precisely measure the parameter of a state that is communicated between Alice and Rob. This parameter was encoded to either the amplitudes of a single excitation state or the phase of a NOON state. With NOON states the dual rail encoding provided greater precision, which is different to the results for the other situations. The precision was maximum for a particular number of excitations in the NOON state. We calculated the bipartite communication for Alice-Rob and Alice-AntiRob beyond the single mode approximation. Rob and AntiRob are causally disconnected counter-accelerating observers. We found that Alice must choose in advance with whom, Rob or AntiRob she wants to create entanglement using a particular setup. She could communicate classically to both.

Dominic Hosler

2013-06-20T23:59:59.000Z

372

Cognitive Aeronautical Communication System  

Science Conference Proceedings (OSTI)

The paper explores the system and architecture requirements for cognitive driven reconfigurable hardware for an aeronautical platform, such as commercial aircraft or high altitude platforms. With advances in components and processing hardware, mobile ... Keywords: Aeronautical Data Networks, Aeronautical Systems, Cognitive Data Networks, OFDM, Software Defined Radio

M. Erturk; Huseyin Arslan; Jamal Haque; Wilfrido Moreno

2011-01-01T23:59:59.000Z

373

SocialMapExplorer: visualizing social networks of massively multiplayer online games in temporal-geographic space  

Science Conference Proceedings (OSTI)

Massively Multiplayer Online Games (MMOGs) provide unique opportunities to investigate large social networks, such as player (working-group), trading, and communication (chat) networks. This paper presents a visualization tool -- SocialMapExplorer ... Keywords: MMOGs, network dynamics, social networks, temporal-geographic space, virtual networks, visualization

Y. Dora Cai; Channing Brown; Iftekhar Ahmed; Yannick Atouba; Andrew Pilny; Marshall Scott Poole

2013-07-01T23:59:59.000Z

374

Maximizing network lifetime based on transmission range adjustment in wireless sensor networks  

Science Conference Proceedings (OSTI)

In a wireless sensor network (WSN), the unbalanced distribution of communication loads often causes the problem of energy hole, which means the energy of the nodes in the hole region will be exhausted sooner than the nodes in other regions. This is a ... Keywords: Energy hole problem, Multi-objective optimization problem, NP hard, Wireless sensor networks

Chao Song; Ming Liu; Jiannong Cao; Yuan Zheng; Haigang Gong; Guihai Chen

2009-07-01T23:59:59.000Z

375

Magneto-inductive networked rescue system (MINERS): taking sensor networks underground  

Science Conference Proceedings (OSTI)

Wireless underground networks are an emerging technology which have application in a number of scenarios. For example, in a mining disaster, flooding or a collapse can isolate portions of underground tunnels, severing wired communication links and preventing ... Keywords: magnetic, magneto-inductive, mining, network, search and rescue, triaxial, underground

Andrew Markham; Niki Trigoni

2012-04-01T23:59:59.000Z

376

Extending ACNET communication types to include multicast semantics  

SciTech Connect

In Fermilab's accelerator control system, multicast communication wasn't properly incorporated into ACNET's transport layer, nor in its programming API. We present some recent work that makes multicasts naturally fit in the ACNET network environment. We also show how these additions provide high-availability for ACNET services.

Neswold, R.; King, C.; /Fermilab

2009-10-01T23:59:59.000Z

377

Reputation in self-organized communication systems and beyond  

Science Conference Proceedings (OSTI)

Efficiently handling reputation is important in dealing with free-riding, malicious attacks and random failures in self-organized communication systems. At the same time, work in this context is often found to be relevant in many other disciplines, in ... Keywords: Bayesian belief propagation, discrete event dynamic system, interacting particle system, liars, performance optimization, phase transition, reputation, social networks, statistical physics model, trust

Jochen Mundinger; Jean-Yves Le Boudec

2006-10-01T23:59:59.000Z

378

Identity based architecture for secure communication in future internet  

Science Conference Proceedings (OSTI)

We propose to enhance the Next Generation Internet by creating a secure and scalable communication infrastructure that mirrors the structure of the real world: people talk to people, objects, objects between themselves and, in general, entities denoted ... Keywords: digital identity, identity-to-identity, next generation internet, overlay network

Antonio F. Gomez-Skarmeta; Pedro Martinez-Julia; Joao Girao; Amardeo Sarma

2010-10-01T23:59:59.000Z

379

Spread spectrum based cooperative communication transceiver on FPGA platform  

Science Conference Proceedings (OSTI)

In this paper we describe the implementation of a spread spectrum based cooperative relaying on an FPGA platform. We focus on a network comprising one source, one or more relays, and one destination. Once the source's message is received by the relays, ... Keywords: FPGA, cognitive radio, cooperative communication, rake receiver, spread spectrum

Babak AzimiSadjadi, Satya Prakash Ponnaluri, Ali Namazi, Siddharth Gaddam, Daniel McCarthy, Paul J. Oleski

380

Efficient Communication Strategies For Distributed Signal Field Estimation  

E-Print Network (OSTI)

consists of a certain number of low cost sensor nodes equipped with small batteries that are deployed networking applications is the estimation of spatially varying processes or fields. This could correspondEfficient Communication Strategies For Distributed Signal Field Estimation Waheed Bajwa Department

Bajwa, Waheed U.

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Resource allocation in OFDMA wireless communications systems supporting multimedia services  

Science Conference Proceedings (OSTI)

We design a resource allocation algorithm for down-link of orthogonal frequency division multiple access (OFDMA) systems supporting real-time (RT) and best-effort (BE) services simultaneously over a time-varying wireless channel. The proposed algorithm ... Keywords: multimedia communications, orthogonal frequency division multiple access (OFDMA), quality of service (QoS), radio resource allocation, wireless network

Kae Won Choi; Wha Sook Jeon; Dong Geun Jeong

2009-06-01T23:59:59.000Z

382

Review: The role of communication systems in smart grids: Architectures, technical solutions and research challenges  

Science Conference Proceedings (OSTI)

The purpose of this survey is to present a critical overview of smart grid concepts, with a special focus on the role that communication, networking and middleware technologies will have in the transformation of existing electric power systems into smart ... Keywords: Communication architecture and protocols, Control and management, Middleware, Security, Smart grid

Emilio Ancillotti, Raffaele Bruno, Marco Conti

2013-11-01T23:59:59.000Z

383

Computer mediated communication for social and academic purposes: Profiles of use and University students' gratifications  

Science Conference Proceedings (OSTI)

The present study approaches the Internet as a social space, where university students make use of computer mediated communication (CMC) applications, i.e. e-mail, instant messaging and social network sites, in order to satisfy social and academic needs. ... Keywords: Computer mediated communication, Profiles of use, Social and academic purposes, University students, Uses and gratifications

Anatoli Vrocharidou; Ilias Efthymiou

2012-01-01T23:59:59.000Z

384

Engaging With the Public? Assessing the Online Presence and Communication Practices of the Nanotechnology Industry  

Science Conference Proceedings (OSTI)

This article examines whether the nanotechnology industry is engaging in the wider social debate surrounding it, through an analysis of its online communication practices. This is an important topic to study, given the nascent nature of the technology ... Keywords: cybermapping, hyperlink analysis, nanotechnology, online networks, science communication, social risk

Robert Ackland; Rachel Gibson; Wainer Lusoli; Stephen Ward

2010-11-01T23:59:59.000Z

385

Optimisation and performance evaluation of mechanisms for latency tolerance in remote memory access communication on clusters  

Science Conference Proceedings (OSTI)

This paper describes the design and performance evaluation of the mechanisms for latency tolerance in the remote memory access communication on clusters equipped with high-performance networks such as Myrinet. It discusses strategies that bridge ... Keywords: aggregation, cluster computing, communication overlap, latency tolerance, non-blocking, remote memory access

J. Nieplocha; V. Tipparaju; M. Krishnan; G. Santhanaraman; D. K. Panda

2004-03-01T23:59:59.000Z

386

Improving communication performance in dense linear algebra via topology aware collectives  

Science Conference Proceedings (OSTI)

Recent results have shown that topology aware mapping reduces network contention in communication-intensive kernels on massively parallel machines. We demonstrate that on mesh interconnects, topology aware mapping also allows for the utilization of highly-efficient ... Keywords: communication, exascale, interconnect topology, mapping, performance

Edgar Solomonik; Abhinav Bhatele; James Demmel

2011-11-01T23:59:59.000Z

387

The communication protocol design of electro-hydraulic control system for hydraulic supports at coal mine  

Science Conference Proceedings (OSTI)

The electro-hydraulic control system for hydraulic supports is a multi embedded systems constitute a computer network system working in the coal mine harsh environment. Excellent hardware connection and fine communication protocol are the fundamental ... Keywords: AVR microcontroller, communication protocols, electro-hydraulic control, hydraulic support

Jingguo Wen; Zisheng Lian

2011-09-01T23:59:59.000Z

388

Key distribution and update for secure inter-group multicast communication  

Science Conference Proceedings (OSTI)

Group communication has become an important component in wireless networks. In this paper, we focus on the environments in which multiple groups coexist in the system, and both intra and inter group multicast traffic must be protected by secret keys. ... Keywords: inter-group communication, key distribution and update, security

Weichao Wang; Bharat Bhargava

2005-11-01T23:59:59.000Z

389

Sizing up information and communication technologies as agents of political development in sub-Saharan Africa  

Science Conference Proceedings (OSTI)

It is widely speculated that the emergence of modern information and communication technologies (ICTs) will boost political development in the developing world. This expectation anchors on solid foundation since, presumably, the ICT revolution would ... Keywords: African development, Communication technologies, Developing countries, ICTs, Political development, Social networks, Sub-Saharan Africa

Nicholas O. Alozie; Patience Akpan-Obong; William A. Foster

2011-09-01T23:59:59.000Z

390

Spatial Networks  

E-Print Network (OSTI)

Complex systems are very often organized under the form of networks where nodes and edges are embedded in space. Transportation and mobility networks, Internet, mobile phone networks, power grids, social and contact networks, neural networks, are all examples where space is relevant and where topology alone does not contain all the information. Characterizing and understanding the structure and the evolution of spatial networks is thus crucial for many different fields ranging from urbanism to epidemiology. An important consequence of space on networks is that there is a cost associated to the length of edges which in turn has dramatic effects on the topological structure of these networks. We will expose thoroughly the current state of our understanding of how the spatial constraints affect the structure and properties of these networks. We will review the most recent empirical observations and the most important models of spatial networks. We will also discuss various processes which take place on these spa...

Barthelemy, Marc

2010-01-01T23:59:59.000Z

391

Two-hop Communication with Energy Harvesting  

E-Print Network (OSTI)

Communication nodes with the ability to harvest energy from the environment have the potential to operate beyond the timeframe limited by the finite capacity of their batteries; and accordingly, to extend the overall network lifetime. However, the optimization of the communication system in the presence of energy harvesting devices requires a new paradigm in terms of power allocation since the energy becomes available over time. In this paper, we consider the problem of two-hop relaying in the presence of energy harvesting nodes. We identify the optimal offline transmission scheme for energy harvesting source and relay when the relay operates in the full-duplex mode. In the case of a half-duplex relay, we provide the optimal transmission scheme when the source has a single energy packet.

Gunduz, Deniz

2011-01-01T23:59:59.000Z

392

Underwater Sensor Network (UWSN) LabUnderwater Sensor Network (UWSN) Lab Demonstration of PCDemonstration of PC--based and DSPbased and DSP--basedbased  

E-Print Network (OSTI)

Underwater Sensor Network (UWSN) LabUnderwater Sensor Network (UWSN) Lab Demonstration--OFDM is one ultimate solution for highOFDM is one ultimate solution for high--datadata--raterate underwater acoustic communications!underwater acoustic communications! PC based implementationPC based implementation

Zhou, Shengli

393

Communicating Building Energy Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Communicating Building Energy Performance Communicating Building Energy Performance Speaker(s): William Bordass Date: August 26, 2008 - 12:00pm Location: 90-3075 Seminar Host/Point of Contact: Paul Mathew The heightened interest in building energy performance has exposed problems with reporting and benchmarking. Established conventions may no longer suit current needs, and new complications are emerging as national and corporate reporting (e.g. for carbon accounting and trading) begin to impact on the certification and labelling of building energy performance. If we are to achieve genuinely low-energy and carbon buildings, we need to get much better at reporting and benchmarking our intentions and outcomes, and particularly making performance visible and communicating it to all the people concerned. In design, this could help us to reduce the persistent

394

On the interdependence of routing and data compression in multi-hop sensor networks  

Science Conference Proceedings (OSTI)

We consider a problem of broadcast communication in a multi-hop sensor network, in which samples of a random field are collected at each node of the network, and the goal is for all nodes to obtain an estimate of the entire field within a prescribed ... Keywords: cross-layer interactions, multi-hop networks, routing, sensor networks, source coding

Anna Scaglione; Sergio D. Servetto

2002-09-01T23:59:59.000Z

395

Mutual anonymity protocol with integrity protection for mobile peer-to-peer networks  

Science Conference Proceedings (OSTI)

A mobile peer-to-peer network (MOPNET) has drawn increasing attentions for its communication convenience and ease of resource sharing in an unfixed infrastructure. The essential requirements for applications in a MOPNET are to enforce ... Keywords: MOPNET, integrity protection, mobile P2P networks, mobile networks, mutual anonymity, peer networks, peer-to-, security

Kuo-Yu Tsai; Chien-Lung Hsu; Tzong-Chen Wu

2010-12-01T23:59:59.000Z

396

Vehicular Ad Hoc Networks: A New Challenge for Localization-Based Systems  

Science Conference Proceedings (OSTI)

A new kind of ad hoc network is hitting the streets: Vehicular Ad Hoc Networks (VANets). In these networks, vehicles communicate with each other and possibly with a roadside infrastructure to provide a long list of applications varying from transit safety ... Keywords: Data Fusion, Localization, Vehicular Networks

Azzedine Boukerche; Horacio A. B. F. Oliveira; Eduardo F. Nakamura; Antonio A. F. Loureiro

2008-07-01T23:59:59.000Z

397

GPSDTN: Predictive Velocity-Enabled Delay-Tolerant Networks for Arctic Research and Sustainability  

Science Conference Proceedings (OSTI)

A Delay-Tolerant Network (DTN) is a necessity for communication nodes that may need to wait for long periods to form networks. The IETF Delay Tolerant Network Research Group is developing protocols to enable such networks for a broad variety of Earth ...

R. Beck; K. Hinkel; W. Eisner; L. Liu; Jacob Norda; Ngoc Hoang; Kevin Fall; Jiang Li; Moses Garuba; Richard Machida; Steve Smith; S. Burleigh; L. Torgerson; A. Hooke; Robert Bulger; Glenn Sheehan; Ben Ellis; Robert Durst; Avri Doria; Maria Uden; James Ferl; D. Pleva; W. Ivancic; P. Paulsen; Ward Bathrick; G. Parr; C. Peoples; B. Scotney; A. Moore; Charles Lambert; Steven Groves; Christopher Small; Lawrence Freudinger; Jason LeBrun; Marc Seibert; Andrew Maffei

2007-07-01T23:59:59.000Z

398

Asymptotically optimal trade-off between local and global connectivity in wireless networks  

Science Conference Proceedings (OSTI)

We analyze large, random network topologies that arise in ad hoc or sensor networks. A fundamental requirement of communication in these systems is reachability, that is, to have a connected network topology. It is known, however, that the price for ... Keywords: Connectivity, Random wireless network topology, Scalability

Andrs Farag

2011-02-01T23:59:59.000Z

399

for distributed wireless sensor networks  

E-Print Network (OSTI)

MEMS technology is enabling the development of inexpensive, autonomous wireless sensor nodes with volumes ranging from cubic mm to several cubic cm. These tiny sensor nodes can form rapidly deployed, massive distributed networks to allow unobtrusive, spatially dense, sensing and communication. MEMS enable these devices by reducing both the volume and energy consumption of various components. This paper will review some of the wireless sensor nodes under development and applicable MEMS devices for small and efficient optical communication, micropower generation, and sensing. In addition, CMOS post-process micromachining will be discussed as a method of achieving low cost and high integration. 1.

Brett A. Warneke; Kristofer S. J. Pister

2002-01-01T23:59:59.000Z

400

Assessing and communicating animal  

E-Print Network (OSTI)

framework of risk communication. The initial focus will be on Lyme disease (also known as Lyme borreliosis), an infectious disease caused by the bacterium Borrelia burgdorferi s.l. Lyme disease is found in a number Protection Agency (Lyme Borreliosis Unit) and a number of other RELU projects. Further information

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Designing complementary communication systems  

E-Print Network (OSTI)

We have long assumed that being face to face is the best environment for social interaction. But is "being there" the best we can aspire to? One common approach to improving face-to-face contexts is to add new communication ...

Harry, Drew

2012-01-01T23:59:59.000Z

402

Whale and dolphin communication  

NLE Websites -- All DOE Office Websites (Extended Search)

Whale and dolphin communication Whale and dolphin communication Name: Harriet Rykse Location: N/A Country: N/A Date: N/A Question: I am a Biology student in Grade 13 (OAC). I live in London Ontario, Canada. I have chosen my research topic on cetaceans (dolphins and whales). I am interested in finding more research on their form of communication, orientation, and their intelligence. Is there a person I can contact that is doing research in this area? I am interested in mainly primary literature. Replies: I don't know the people, but there may be better ways to start your literature search. If there is a university nearby, find its science library and a good research librarian to help. Try to find a recent book on the subject, one which has lists of the primary literature that you can use. Otherwise, look in the library's list of journals for things like "Cetacean Biology" or some such titles. Then look for what's called a review article on communication. Review articles are very direct and up-to-date guides to the recent literature. Good luck

403

Heuristic-Based Techniques for Mapping Irregular Communication Graphs to Mesh Topologies  

Science Conference Proceedings (OSTI)

Mapping of parallel applications on the network topology is becoming increasingly important on large supercomputers. Topology aware mapping can reduce the hops traveled by messages on the network and hence reduce contention, which can lead to improved ... Keywords: mapping, interconnect topology, communication optimization, performance, irregular patterns

Abhinav Bhatele; Laxmikant V. Kale

2011-09-01T23:59:59.000Z

404

Smart Grid Communication and Co-Simulation Vincenzo Liberatore, Member, IEEE Computer, Ahmad Al-Hammouri  

E-Print Network (OSTI)

1 Smart Grid Communication and Co-Simulation Vincenzo Liberatore, Member, IEEE Computer, Ahmad Al-Hammouri Abstract--The smart power grid will extensively rely on networked control to increase efficiency in smart grid com- munication, and proposes PowerNet, a system of heterogeneous yet interoperable networks

Liberatore, Vincenzo

405

Design and analysis of optical flow switched networks  

E-Print Network (OSTI)

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

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

2009-01-01T23:59:59.000Z

406

A Dynamic Probabilistic Route Discovery for Mobile Ad Hoc Networks  

E-Print Network (OSTI)

Abdulai,J. Ould-Khaoua,M. Mackenzie,L.M. Mohammed,A. International Journal of Communication Networks and Distributed Systems, Volume 4(1) pp 108 - 130

Abdulai, J.

407

A Survey of Green Mobile Networks: Opportunities and Challenges  

Science Conference Proceedings (OSTI)

The explosive development of Information and Communication Technology (ICT) has significantly enlarged both the energy demands and the CO 2 emissions, and consequently contributes to make the energy crisis and global warming problems ... Keywords: energy efficiency, green technique, mobile networks

Xiaofei Wang; Athanasios V. Vasilakos; Min Chen; Yunhao Liu; Ted Taekyoung Kwon

2012-02-01T23:59:59.000Z

408

TwinsNet: a cooperative MIMO mobile sensor network  

Science Conference Proceedings (OSTI)

A distributed sensor network with mobility provides an ideal system platform for surveillance and for search and rescue applications. We consider a system design consisting of a set of autonomous robots communicating with each other and with a base station ...

Qingquan Zhang; Woong Cho; Gerald E. Sobelman; Liuqing Yang; Richard Voyles

2006-09-01T23:59:59.000Z

409

Distributed Newton-type algorithms for network resource allocation  

E-Print Network (OSTI)

Most of today's communication networks are large-scale and comprise of agents with local information and heterogeneous preferences, making centralized control and coordination impractical. This motivated much interest in ...

Wei, Ermin

2010-01-01T23:59:59.000Z

410

Programming storage-centric sensor networks with Squirrel  

Science Conference Proceedings (OSTI)

We present Squirrel, a stream-oriented programming framework for storage-centric sensor networks. The storage-centric paradigm---where storage operations prevail over communication activity---applies to scenarios such as batch data collection, delay-tolerant ...

Luca Mottola

2010-04-01T23:59:59.000Z

411

Next Century Challenges: Mobile Networking for "Smart Dust"  

E-Print Network (OSTI)

Next Century Challenges: Mobile Networking for "Smart Dust" J. M. Kahn, R. H. Katz (ACM Fellow), K be small enough to remain suspended in air, buoyed by air currents, sensing and communicating for hours

Kahn, Joseph M.

412

Sound Multi-party Business Protocols for Service Networks  

Science Conference Proceedings (OSTI)

Service networks comprise large numbers of long-running, highly dynamic complex end-to-end service interactions reflecting asynchronous message flows that typically transcend several organizations and span several geographical locations. At the communication ...

Michele Mancioppi; Manuel Carro; Willem-Jan Heuvel; Mike P. Papazoglou

2008-12-01T23:59:59.000Z

413

Autonomous Depth Adjustment for Underwater Sensor Networks: Design and Applications  

E-Print Network (OSTI)

To fully understand the ocean environment requires sensing the full water column. Utilizing a depth adjustment system on an underwater sensor network provides this while also improving global sensing and communications. ...

Detweiler, Carrick

414

Bayesian Networks  

E-Print Network (OSTI)

season. do X X X X Thus, Bayesian networks are particularly1990 G.F. Cooper and E. Herskovits. A Bayesian method forcon- structing Bayesian belief networks from databases.

Judea Pearl

2011-01-01T23:59:59.000Z

415

Trilliant Networks | Open Energy Information  

Open Energy Info (EERE)

Networks Networks Jump to: navigation, search Logo: Trilliant Networks Name Trilliant Networks Address 1100 Island Drive Place Redwood City, California Zip 94065 Sector Efficiency Product Provides utilities with metering communication platform Website http://www.trilliantinc.com/ Coordinates 37.536317°, -122.256385° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.536317,"lon":-122.256385,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

416

Home Area Network Performance and Reliability  

Science Conference Proceedings (OSTI)

In current deployments, the in-meter communications interface between a utilitys advanced metering infrastructure (AMI) system and a consumers home area network (HAN) could be a critical link for the implementation of retail energy services. The reliability of communications across this interface will affect the overall customer experience and may impact the value of these services. This report examines technologies currently being used in North America and elsewhere to implement that link narrowband and...

2010-12-31T23:59:59.000Z

417

Overflow and losses in a network queue with a self-similar input  

Science Conference Proceedings (OSTI)

This paper considers a discrete time queuing system that models a communication network multiplexer which is fed by a self-similar packet traffic. The model has a finite buffer of size h, a number of servers with unit service ... Keywords: buffer overflow, communications networks, long-range dependence, self-similarity

Boris Tsybakov; Nicolas D. Georganas

2000-01-01T23:59:59.000Z

418

Research directions in agent communication  

Science Conference Proceedings (OSTI)

Increasingly, software engineering involves open systems consisting of autonomous and heterogeneous participants or agents who carry out loosely coupled interactions. Accordingly, understanding and specifying communications among agents ... Keywords: Communication

Amit K. Chopra, Alexander Artikis, Jamal Bentahar, Marco Colombetti, Frank Dignum, Nicoletta Fornara, Andrew J. I. Jones, Munindar P. Singh, Pinar Yolum

2013-03-01T23:59:59.000Z

419

TCP extensions for space communications  

Science Conference Proceedings (OSTI)

The space communication environment and mobile and wireless communication environments show many similarities when observed from the perspective of a transport protocol. Both types of environments exhibit loss caused by data corruption and link outage, ...

Robert C. Durst; Gregory J. Miller; Eric J. Travis

1997-10-01T23:59:59.000Z

420

Hallmark Cryptographic Serial Communication | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Serial Communication A cryptographic card and link module integrating the Secure SCADA Communications Protocol to provide secure serial communications for existing and new...

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

QTR Ex Parte Communications | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ex Parte Communications QTR Ex Parte Communications Ex parte communications received during the Department of Energy Quadrennial Technology Review. qtrexpartecommunications0.pd...

422

Wireless Networking  

Science Conference Proceedings (OSTI)

Over the past decade, the world has witnessed an explosion in the development and deployment of new wireless network technologies. From cellular mobile telephony to the ubiquitous "WiFi" networks in coffee-shops and airports, to the emerging WiMAX wireless ... Keywords: Networking

Anurag Kumar; D. Manjunath; Joy Kuri

2008-03-01T23:59:59.000Z

423

Strategies for communication skills development  

Science Conference Proceedings (OSTI)

As the scope of computer science continues to expand and move further into inter-disciplinary research, we see communication skills development (CSD) gain prominence in tertiary courses. Employer groups, professional bodies and universities increasingly ... Keywords: communication across the curriculum, communication skills development, curriculum change

Paul Gruba; Reem Al-Mahmood

2004-01-01T23:59:59.000Z

424

Designing Scalable PGAS Communication Subsystems on Cray Gemini Interconnect  

Science Conference Proceedings (OSTI)

The Cray Gemini Interconnect has been recently introduced as a next generation network architecture for building multi-petaflop supercomputers. Cray XE6 systems including LANL Cielo, NERSC Hopper, ORNL Titan and proposed NCSA BlueWaters leverage the Gemini Interconnect as their primary Interconnection network. At the same time, programming models such as the Message Passing Interface (MPI) and Partitioned Global Address Space (PGAS) models such as Unified Parallel C (UPC) and Co-Array Fortran (CAF) have become available on these systems. Global Arrays is a popular PGAS model used in a variety of application domains including hydrodynamics, chemistry and visualization. Global Arrays uses Aggregate Re- mote Memory Copy Interface (ARMCI) as the communication runtime system for Remote Memory Access communication. This paper presents a design, implementation and performance evaluation of scalable and high performance communication subsystems on Cray Gemini Interconnect using ARMCI. The design space is explored and time-space complexities of commu- nication protocols for one-sided communication primitives such as contiguous and uniformly non-contiguous datatypes, atomic memory operations (AMOs) and memory synchronization is presented. An implementation of the proposed design (referred as ARMCI-Gemini) demonstrates the efficacy on communication primitives, application kernels such as LU decomposition and full applications such as Smooth Particle Hydrodynamics (SPH) application.

Vishnu, Abhinav; Daily, Jeffrey A.; Palmer, Bruce J.

2012-12-26T23:59:59.000Z

425

A High-Speed, Wireless Network for Ship-to-Ship and Ship-to-Shore Data Exchange  

Science Conference Proceedings (OSTI)

Wireless networking equipment was installed on three research vessels and at three shore stations during the 1998 Thin Layers Experiment in East Sound, Washington. This wireless network provided high-speed data communication between scientists on ...

Nathan D. Potter; Timothy J. Cowles

2000-07-01T23:59:59.000Z

426

A robust on-demand path-key establishment framework via random key predistribution for wireless sensor networks  

Science Conference Proceedings (OSTI)

Secure communication is a necessity for some wireless sensor network (WSN) applications. However, the resource constraints of a sensor render existing cryptographic systems for traditional network systems impractical for a WSN. Random key predistribution ...

Guanfeng Li; Hui Ling; Taieb Znati; Weili Wu

2006-04-01T23:59:59.000Z

427

Residential Programmable Communicating Thermostats  

Science Conference Proceedings (OSTI)

Residential programmable communicating thermostats (PCTs) enable demand response and offer a convenient energy management option for the consumer. PCTs allow customers to program and control temperature set-points remotely, primarily through the Internet. Additionally, some of these thermostats can be remotely controlled by utilities or third parties to curtail heating and cooling loads during periods of peak electricity demand. This Technology Brief, prepared for the Energy Efficiency Initiative, presen...

2007-12-05T23:59:59.000Z

428

Commercial Buildings Communications protocols  

Science Conference Proceedings (OSTI)

There are many automation and control protocols in use in commercial building and residential sectors today. For both commercial building and residential sectors there are several thousand manufacturers throughout the world that supply end-use electrical appliances and other building fixtures that communicate using these automation and control protocols. Some of these protocols are based on open standards (for example, BACnet, DALI) while others are semi-proprietary (for example, Zigbee, LonWorks, Modbus...

2008-05-15T23:59:59.000Z

429

Sciences et Communication  

E-Print Network (OSTI)

) -Génie des procédés (R) -Chimie théorique et applications (R) -Energie (R) UFR des sciences de laSciences et Communication L1 L2 Physique Chimie Electronique Informatique Mathématiques MIEF Génie des procédés Sciences de la Matière Traitement de l'Information Ingénierie électrique Informatique

Powell, Geoffrey

430

Biomonitoring with Wireless Communications  

SciTech Connect

This review is divided into three sections: technologies for monitoring physiological parameters; biosensors for chemical assays and wireless communications technologies including image transmissions. Applications range from monitoring high risk patients for heart, respiratory activity and falls to sensing levels of physical activity in military, rescue, and sports personnel. The range of measurements include, heart rate, pulse wave form, respiratory rate, blood oxygen, tissue pCO2, exhaled carbon dioxide and physical activity. Other feasible measurements will employ miniature chemical laboratories on silicon or plastic chips. The measurements can be extended to clinical chemical assays ranging from common blood assays to protein or specialized protein measurements (e.g., troponin, creatine, and cytokines such as TNF and IL6). Though the feasibility of using wireless technology to communicate vital signs has been demonstrated 32 years ago (1) it has been only recently that practical and portable devices and communications net works have become generally available for inexpensive deployment of comfortable and affordable devices and systems.

Budinger, Thomas F.

2003-03-01T23:59:59.000Z

431

Communication in hazardous environments  

SciTech Connect

Radios were investigated for use in hazardous environments where protective breathing equipment such as plastic suits and respirators interfere with communication. A radio system, manufactured by Communications-Applied technology (C-AT), was identified that was designed specifically for hazardous environment communications. This equipment had been used successfully by the US Army and NASA for several years. C-AT equipment was evaluated in plantwide applications at the Savannah River Plant (SRP) using temporary frequencies obtained by the Department of Energy-Savannah River (DOE-SR). Radios performed well in all applications, which included a tritium facility, high-level caves, a nuclear reactor building, tank farm, and a canyon building interior. Permanent frequencies were obtained by DOE-SR for two complete six-man C-AT systems at SRP. Because of the relatively short range of these systems, replicates will cover all applications of this type of equipment plantwide. Twelve radio systems are currently being used successfully in plantwide applications.

Rankin, W N; Herold, T R

1986-01-01T23:59:59.000Z

432

Network Aware Image Shaping for Low-Latency and Energy-Efficient Data Services over the Palm Wireless Network  

E-Print Network (OSTI)

With the introduction of next-generation wireless data services and increasing user demands for ubiquitous Internet access, there will be a growing demand for wireless handheld devices with multimedia communication capability. However, wireless multimedia communication has several bottlenecks, including limited bandwidth of cellular networks, dynamically varying wireless channel conditions, and processor/battery constrained handheld device.

Dong-Gi Lee; Debashis Panigrahi; Sujit Dey

2003-01-01T23:59:59.000Z

433

Multi-channel transmission with efficient delivery of routing information in maritime WiMAX mesh networks  

Science Conference Proceedings (OSTI)

There is a lack of broadband wireless network in sea to meet the increasing needs of modern maritime users and we have envisaged WiMAX mesh networks for high-speed and low-cost ship-to-ship/shore communications. In such a maritime WiMAX mesh network, ... Keywords: IEEE Std 802.16-2004, broadband wireless access, maritime communications, mesh network, multi-channel transmission

Ming-Tuo Zhou; Hiroshi Harada; Peng-Yong Kong; Chee-Wei Ang; Yu Ge; J. S. Pathmasuntharam

2009-06-01T23:59:59.000Z

434

Broadband accelerator control network  

SciTech Connect

A broadband data communications network has been implemented at BNL for control of the Alternating Gradient Synchrotron (AG) proton accelerator, using commercial CATV hardware, dual coaxial cables as the communications medium, and spanning 2.0 km. A 4 MHz bandwidth Digital Control channel using CSMA-CA protocol is provided for digital data transmission, with 8 access nodes available over the length of the RELWAY. Each node consists of an rf modem and a microprocessor-based store-and-forward message handler which interfaces the RELWAY to a branch line implemented in GPIB. A gateway to the RELWAY control channel for the (preexisting) AGS Computerized Accelerator Operating system has been constructed using an LSI-11/23 microprocessor as a device in a GPIB branch line. A multilayer communications protocol has been defined for the Digital Control Channel, based on the ISO Open Systems Interconnect layered model, and a RELWAY Device Language defined as the required universal language for device control on this channel.

Skelly, J.; Clifford, T.; Frankel, R.

1983-01-01T23:59:59.000Z

435

Underwater wireless communications have witnessed major developments in recent years, especially in the last decade. While the first generation of applications involved just a single transmitter and receiver communicating at low bit-rates, nowadays un-  

E-Print Network (OSTI)

Underwater wireless communications have witnessed major developments in recent years, especially applications range from autonomous observation systems to cooperative missions between autonomous underwater layer for underwater networks. The underwater acoustic channel shows some unique characteristics

Stojanovic, Milica

436

The APS control system network  

SciTech Connect

The APS accelerator control system is a distributed system consisting of operator interfaces, a network, and computer-controlled interfaces to hardware. This implementation of a control system has come to be called the {open_quotes}Standard Model.{close_quotes} The operator interface is a UNDC-based workstation with an X-windows graphical user interface. The workstation may be located at any point on the facility network and maintain full functionality. The function of the network is to provide a generalized communication path between the host computers, operator workstations, input/output crates, and other hardware that comprise the control system. The crate or input/output controller (IOC) provides direct control and input/output interfaces for each accelerator subsystem. The network is an integral part of all modem control systems and network performance will determine many characteristics of a control system. This paper will describe the overall APS network and examine the APS control system network in detail. Metrics are provided on the performance of the system under various conditions.

Sidorowicz, K.V.; McDowell, W.P.

1995-12-31T23:59:59.000Z

437

Downhole drilling network using burst modulation techniques  

DOE Patents (OSTI)

A downhole drilling system is disclosed in one aspect of the present invention as including a drill string and a transmission line integrated into the drill string. Multiple network nodes are installed at selected intervals along the drill string and are adapted to communicate with one another through the transmission line. In order to efficiently allocate the available bandwidth, the network nodes are configured to use any of numerous burst modulation techniques to transmit data.

Hall; David R. (Provo, UT), Fox; Joe (Spanish Fork, UT)

2007-04-03T23:59:59.000Z

438

Prior NIST Work in Public Safety Communications  

Science Conference Proceedings (OSTI)

... Prior NIST Work in Public Safety Communications. ... Distributed Testbed for First Responders; Guide to Public Safety Communication Technologies.

2013-05-26T23:59:59.000Z

439

Longmont Power & Communications - Commercial and Industrial Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

are here Home Savings Longmont Power & Communications - Commercial and Industrial Energy Efficiency Rebate Program Longmont Power & Communications - Commercial and...

440

Thermal noise informatics: Totally secure communication via a wire; Zero-power communication; and Thermal noise driven computing  

E-Print Network (OSTI)

Very recently, it has been shown that thermal noise and its artificial versions (Johnson-like noises) can be utilized as an information carrier with peculiar properties therefore it may be proper to call this topic Thermal Noise Informatics. Zero Power (Stealth) Communication, Thermal Noise Driven Computing, and Totally Secure Classical Communication are relevant examples. In this paper, while we will briefly describe the first and the second subjects, we shall focus on the third subject, the secure classical communication via wire. This way of secure telecommunication utilizes the properties of Johnson(-like) noise and those of a simple Kirchhoff's loop. The communicator is unconditionally secure at the conceptual (circuit theoretical) level and this property is (so far) unique in communication systems based on classical physics. The communicator is superior to quantum alternatives in all known aspects, except the need of using a wire. In the idealized system, the eavesdropper can extract zero bit of information without getting uncovered. The scheme is naturally protected against the man-in-the-middle attack. The communication can take place also via currently used power lines or phone (wire) lines and it is not only a point-to-point communication like quantum channels but network-ready. Tests have been carried out on a model-line with ranges beyond the ranges of any known direct quantum communication channel and they indicate unrivalled signal fidelity and security performance. This simple device has single-wire secure key generation/sharing rates of 0.1, 1, 10, and 100 bit/second for copper wires with diameters/ranges of 21 mm / 2000 km, 7 mm / 200 km, 2.3 mm / 20 km, and 0.7 mm / 2 km, respectively and it performs with 0.02% raw-bit error rate (99.98 % fidelity).

Laszlo B. Kish; Robert Mingesz; Zoltan gingl

2007-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Definition: Home Area Network | Open Energy Information  

Open Energy Info (EERE)

Area Network Area Network Jump to: navigation, search Dictionary.png Home Area Network A communication network within the home of a residential electricity customer that allows transfer of information between electronic devices, including, but not limited to, in-home displays, computers, energy management devices, direct load control devices, distributed energy resources, and smart meters. Home area networks can be wired or wireless.[1] Related Terms electricity generation, distributed energy resource References ↑ https://www.smartgrid.gov/category/technology/home_area_network [[Ca LikeLike UnlikeLike You like this.Sign Up to see what your friends like. tegory: Smart Grid Definitionssustainability,smart grid,sustainability,smart grid, |Template:BASEPAGENAME]]sustainability,smart grid,sustainability,smart

442

Distributed services for mobile ad hoc networks  

E-Print Network (OSTI)

A mobile ad hoc network consists of certain nodes that communicate only through wireless medium and can move arbitrarily. The key feature of a mobile ad hoc network is the mobility of the nodes. Because of the mobility, communication links form and disappear as nodes come into and go out of each other's communica- tion range. Mobile ad hoc networks are particularly useful in situations like disaster recovery and search, military operations, etc. Research on mobile ad hoc networks has drawn a huge amount of attention recently. The main challenges for mobile ad hoc networks are the sparse resources and frequent mobility. Most of the research work has been focused on the MAC and routing layer. In this work, we focus on distributed services for mobile ad hoc networks. These services will provide some fundamental functions in developing various applications for mobile ad hoc networks. In particular, we focus on the clock synchronization, connected dominating set, and k-mutual exclusion problems in mobile ad hoc networks.

Cao, Guangtong

2005-08-01T23:59:59.000Z

443

WiMsh: a simple and efficient tool for simulating IEEE 802.16 wireless mesh networks in ns-2  

Science Conference Proceedings (OSTI)

Wireless mesh networks (WMNs) are two-tier wireless multihop networks. The top tier is made of wireless routers, which provide access to the wireless clients in the bottom tier. One technology for enabling multi-hop communication in the top tier is IEEE ... Keywords: IEEE 802.16, network simulator 2, simulation, wireless mesh networks

Claudio Cicconetti; Ian F. Akyildiz; Luciano Lenzini

2009-03-01T23:59:59.000Z

444

Energy optimization in IP-over-WDM networks  

Science Conference Proceedings (OSTI)

The energy crisis and environmental protection are gaining increasing concern in recent years. ICT (Information and Communication Technology) has a significant impact on the total electricity consumption all over the world. Telecom networks, being an ... Keywords: Energy, IP-over-WDM, Networks, Optimization, Traffic grooming

Yi Zhang; Massimo Tornatore; Pulak Chowdhury; Biswanath Mukherjee

2011-07-01T23:59:59.000Z

445

Opportunistic Relaying for MIMO Amplify-and-Forward Cooperative Networks  

Science Conference Proceedings (OSTI)

We consider a wireless relay network with multiple antenna terminals over Rayleigh fading channels, and apply distributed space-time coding (DSTC) in amplify-and-forward (A&F) mode. The A&F scheme is used in a way that each relay transmits ... Keywords: Coopeative communications, Performance analysis, Relay networks

Behrouz Maham; Are Hjrungnes

2013-02-01T23:59:59.000Z

446

Fair Coalitions for Power-Aware Routing in Wireless Networks  

Science Conference Proceedings (OSTI)

Several power-aware routing schemes have been developed for wireless networks under the assumption that nodes are willing to sacrifice their power reserves in the interest of the network as a whole. But, in several applications of practical utility, ... Keywords: Wireless communication, algorithm design and analysis, energy-aware systems and routing.

Ratul K. Guha; Carl A. Gunter; Saswati Sarkar

2007-02-01T23:59:59.000Z

447

A neural network-based multi-agent classifier system  

Science Conference Proceedings (OSTI)

In this paper, we propose a neural network (NN)-based multi-agent classifier system (MACS) using the trust, negotiation, and communication (TNC) reasoning model. The main contribution of this work is that a novel trust measurement method, based on the ... Keywords: Multi-agent systems, Neural networks, Pattern classification

Anas Quteishat; Chee Peng Lim; Jeffrey Tweedale; Lakhmi C. Jain

2009-03-01T23:59:59.000Z

448

Wireless sensor networks based on publish/subscribe messaging paradigms  

Science Conference Proceedings (OSTI)

Rapidly increasing development and application areas of wireless sensor networks requires the deployment of highly scalable and dynamic communications paradigms for coping with the complex data management tasks encountered in distributed environments. ... Keywords: publish/subscribe messaging systems, wireless sensor networks

Hakan Cam; Ozgur Koray Sahingoz; Ahmet Coskun Sonmez

2011-05-01T23:59:59.000Z

449

Network-theoretic classification of parallel computation patterns  

Science Conference Proceedings (OSTI)

Parallel computation in a high-performance computing environment can be characterized by the distributed memory access patterns of the underlying algorithm. During execution, networks of compute nodes exchange messages that indirectly exhibit these access ... Keywords: communication patterns, computational dwarves, graph theory, network theory, pattern recognition

Sean Whalen; Sophie Engle; Sean Peisert; Matt Bishop

2012-05-01T23:59:59.000Z

450

Self-organizing relay stations in relay based cellular networks  

Science Conference Proceedings (OSTI)

The increasing popularity of wireless communications and the higher data requirements of new types of service lead to higher demands on wireless networks. Relay based cellular networks have been seen as an effective way to meet users' increased bit rate ... Keywords: Cooperative control, Mobile WiMAX, Passive DoA, Phased array antenna, Self-organization

Peng Jiang; John Bigham; Jiayi Wu

2008-08-01T23:59:59.000Z

451

Underwater wireless sensor networks: routing issues and future challenges  

Science Conference Proceedings (OSTI)

With the advancements of acoustic modem technology that supports better data rates with reliable communications, current research focuses on algorithms those can support such technology in a better way. During the last two decades, many protocols suggested ... Keywords: acoustic communicaitons, intermettent networks, routing protocols, underwater sensor networks

Muhammad Ayaz; Azween Abdullah

2009-12-01T23:59:59.000Z

452

ELECTRICAL SUBSTATION RELIABILITY EVALUATION WITH EMPHASIS ON EVOLVING INTERDEPENDENCE ON COMMUNICATION INFRASTRUCTURE.  

Science Conference Proceedings (OSTI)

This study developed a probabilistic methodology for assessment of the reliability and security of electrical energy distribution networks. This included consideration of the future grid system, which will rely heavily on the existing digitally based communication infrastructure for monitoring and protection. Event tree and fault tree methods were utilized. The approach extensively modeled the types of faults that a grid could potentially experience, the response of the grid, and the specific design of the protection schemes. We demonstrated the methods by applying it to a small sub-section of a hypothetical grid based on an existing electrical grid system of a metropolitan area. The results showed that for a typical design that relies on communication network for protection, the communication network reliability could contribute significantly to the frequency of loss of electrical power. The reliability of the communication network could become a more important contributor to the electrical grid reliability as the utilization of the communication network significantly increases in the near future to support ''smart'' transmission and/or distributed generation.

AZARM,M.A.; BARI,R.; YUE,M.; MUSICKI,Z.

2004-09-12T23:59:59.000Z

453

1692 IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 24, NO. 9, SEPTEMBER 2006 Performance Enhancement of On-Board  

E-Print Network (OSTI)

Enhancement of On-Board Communication Networks Using Outage Prediction Adeel Baig, Student Member, IEEE, Lavy increasingly impor- tant in recent years is that of on-board mobile communication, where users on a vehicle. INTRODUCTION RECENT YEARS have evidenced a growing interest in the paradigm of pervasive connectivity, which

Libman, Lavy

454

66 IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 1, MARCH 2013 Decentralized Controls and Communications for  

E-Print Network (OSTI)

66 IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 1, MARCH 2013 Decentralized Controls and Communications for Autonomous Distribution Networks in Smart Grid Chun-Hao Lo, Student Member, IEEE, and Nirwan and communications technologies to actualize smart grid modernization. In this paper, we design au- tonomous

Ansari, Nirwan

455

The problem of conflicting social spheres: effects of network structure on experienced tension in social network sites  

Science Conference Proceedings (OSTI)

We propose that a fundamental property of human psychology, the need to maintain independent social spheres, imposes constraints on the use of social network sites (SNS). We particularly focus on the consequences of visibility of communications across ... Keywords: SNS, network diversity, online tension, social spheres

Jens Binder; Andrew Howes; Alistair Sutcliffe

2009-04-01T23:59:59.000Z

456

Communications Team | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Communications Team Communications Team Communications Team The Communications Team leads strategic communications and outreach activities for the Office of Energy Efficiency and Renewable Energy (EERE) by ensuring that key information about the nature and impact of EERE activities is accessible, reliable, and delivered through multiple communications channels to stakeholders and the public. Why it Matters We manage and continually update the EERE Web enterprise and its digital tools, including EERE's corporate website, the EnergySaver.gov content on Energy.gov, and several other EERE sites. We ensure compliance with federal requirements and enable the broad distribution and management of content. We lead the planning and execution of EERE's press and public announcements, media outreach, social media, multimedia activities, and

457

SSN comments to DOE NBP RFI communications requirements  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Comms Requirements Comms Requirements 12 July 2010 1/6 Michael Jung // Policy Director // Silver Spring Networks 888.406.1882 // mjung@silverspringnet.com (1) What are the current and future communications needs of utilities, including for the deployment of new Smart Grid applications, and how are these needs being met? Utilitiesʼ current communications needs are diverse, with considerable variation from utility to utility. Current communications needs that are related to, but generally pre-date, smart grid include: * System control and data acquisition (SCADA) * Drive-by meter reading * One-way direct load control * Mobile workforce management * Demand response, dynamic pricing for commercial/industrial customers In the smart grid-enabled future, utility smart grid applications will require

458

Functional Requirements for Customer Communications  

Science Conference Proceedings (OSTI)

Customer communications infrastructures could support a wide variety of useful utility operations and industry-wide applications. However, these systems will require a substantial investment, which necessitates viewing customer communications with multiple stakeholders and applications in mind. This report describes the development of requirements for customer interface applications such as revenue metering, communications gateways, and remote equipment operations that can provide the basis for powerful ...

2002-12-18T23:59:59.000Z

459

Networks in Buildings: Which Path Forward?  

NLE Websites -- All DOE Office Websites (Extended Search)

Networks in Buildings: Which Path Forward? Networks in Buildings: Which Path Forward? Title Networks in Buildings: Which Path Forward? Publication Type Conference Paper LBNL Report Number LBNL-2511E Year of Publication 2008 Authors Nordman, Bruce Conference Name 2008 ACEEE Summer Study on Energy Efficiency in Buildings Conference Location Pacific Grove, CA Keywords communication and standards, technologies Abstract To date, digital networks have principally been installed for connecting information technology devices, with more modest use in consumer electronics, security, and large building control systems. The next 20 years will see much greater deployment of networks in buildings of all types, and across all end uses. Most of these are likely to be introduced primarily for reasons other than energy efficiency, and add energy use for network interfaces and network products. Widespread networking could easily lead to increased energy use, and experience with IT and CE networks suggests this may be likely. Active engagement by energy efficiency professionals in the architecture and design of future networks could lead to their being a large and highly cost-effective tool for efficiency. However, network standards are complex and take many years to develop and negotiate so that lack of action on this in the near term may foreclose important opportunities for years or decades to come. Digital networks need to be common globally, providing another challenge to building systems and elements that are more commonly designed only for national or regional markets. Key future networks are lighting, climate control, and security/presence. This paper reviews some examples of past network designs and use and the lessons they hold for future building networks. It also highlights key needed areas for research, policy, and standards development.

460

Ultra-wideband radar sensors and networks  

DOE Patents (OSTI)

Ultra wideband radar motion sensors strategically placed in an area of interest communicate with a wireless ad hoc network to provide remote area surveillance. Swept range impulse radar and a heart and respiration monitor combined with the motion sensor further improves discrimination.

Leach, Jr., Richard R; Nekoogar, Faranak; Haugen, Peter C

2013-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

The new amateur radio university network: AMUNET  

Science Conference Proceedings (OSTI)

The intention of this paper is to give the readers an opportunity to become familiar with nonofficial and often ad-hoc constructed, computerized amateur radio networks, that might be easily used as AMUNETs - the digital links between university centers, ... Keywords: ADL, AMUNET, amateur radio, communication, computer, education, rural area, university

Miroslav Skoric

2005-07-01T23:59:59.000Z

462

Road traffic model using distributed camera network  

Science Conference Proceedings (OSTI)

Traffic monitoring/prediction using a distributed camera network is presented in this paper. The activities on each road link are monitored and features are derived to identify the pattern. Then it is learnt, classified, predicted and communicated to ... Keywords: hidden Markov model, spatial interest points, spatial-temporal interest points, traffic classification, traffic prediction, traffic surveillance

S. Indu; Sankalp Arora; Santanu Chaudhury; Asok Bhattacharyya

2010-12-01T23:59:59.000Z

463

Portable control device for networked mobile robots  

DOE Patents (OSTI)

A handheld control device provides a way for controlling one or multiple mobile robotic vehicles by incorporating a handheld computer with a radio board. The device and software use a personal data organizer as the handheld computer with an additional microprocessor and communication device on a radio board for use in controlling one robot or multiple networked robots.

Feddema, John T. (Albuquerque, NM); Byrne, Raymond H. (Albuquerque, NM); Bryan, Jon R. (Edgewood, NM); Harrington, John J. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM)

2002-01-01T23:59:59.000Z

464

Efficient autonomous signature exchange on ubiquitous networks  

Science Conference Proceedings (OSTI)

Fair signature exchange in emerging ubiquitous commerce (u-commerce) poses new security challenges. In particular, its operations are highly distributed and autonomous, and typically run on much open, dynamic and resource-diversified ubiquitous networks. ... Keywords: Communication protocol, Fair exchange, Signature, Ubiquitous computing, Verifiable encryption

Q. Shi; N. Zhang; D. Llewellyn-Jones

2012-11-01T23:59:59.000Z

465

Communicate energy efficiency | ENERGY STAR  

NLE Websites -- All DOE Office Websites (Extended Search)

Communicate energy efficiency Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction...

466

Network Hopes  

Science Conference Proceedings (OSTI)

In this work, the authors examine four cases of municipalities that have attempted to create municipal-sponsored wireless broadband networks. In each of these cases, one of the reasons given for establishing the network was to engage the citizens in ... Keywords: civic engagement, municipalities, social capital, wireless broadband Internet

Andrea H. Tapia; Julio Angel Ortiz

2010-02-01T23:59:59.000Z

467

Organizations and Networks | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search Registered Technical and Research Organizations Networks Climate Eval "The website promotes active debate on areas relevant to evaluation of climate change and development evaluation by bringing relevant topics to a peer to peer discussion forum." Coordinated Low Emissions Assistance Network (CLEAN) CLEAN aims to improve communication and coordination by bringing together national and international organizations that are assisting developing countries with preparation and implementation of low greenhouse gas emission plans and strategies. This includes support for technology needs assessments, for low carbon and clean energy development plans, and for technology roadmaps and deployment programs. Renewable Energy Policy Network for the 21st Century (REN21)

468

Network aspects of the Fermilab control system  

SciTech Connect

The control system of the Fermi National Accelerator is a heavily computerized network of distributed processors. One part of the control system includes a multidrop network of eleven Lockheed MAC-16 processors, a Digital Equipment Corporation PDP-11 computer, a Xerox 530, and a Control Data 6600 system. These computers exchange information using serial hardware and dedicated cable buses. The individual functions of the central processing units in this network, the message protocols for computer communications, and design guidelines for future distributed processing control systems are discussed.

Barton, H.R. Jr.

1977-01-01T23:59:59.000Z

469

Quantum key distribution network with wavelength addressing  

E-Print Network (OSTI)

Most traditional applications of quantum cryptography are point-to-point communications, in which only two users can exchange keys. In this letter, we present a network scheme that enable quantum key distribution between multi-user with wavelength addressing. Considering the current state of wavelength division multiplexing technique, dozens or hundreds of users can be connected to such a network and directly exchange keys with each other. With the scheme, a 4-user demonstration network was built up and key exchanges were performed.

Mo, X F; Han, Z F; Xu, F X; Zhang, T; Guo, Guang-Can; Han, Zheng-Fu; Mo, Xiao-Fan; Xu, Fang-Xing; Zhang, Tao

2006-01-01T23:59:59.000Z

470

Ultra Wideband (UWB) communication vulnerability for security applications.  

Science Conference Proceedings (OSTI)

RF toxicity and Information Warfare (IW) are becoming omnipresent posing threats to the protection of nuclear assets, and within theatres of hostility or combat where tactical operation of wireless communication without detection and interception is important and sometimes critical for survival. As a result, a requirement for deployment of many security systems is a highly secure wireless technology manifesting stealth or covert operation suitable for either permanent or tactical deployment where operation without detection or interruption is important The possible use of ultra wideband (UWB) spectrum technology as an alternative physical medium for wireless network communication offers many advantages over conventional narrowband and spread spectrum wireless communication. UWB also known as fast-frequency chirp is nonsinusoidal and sends information directly by transmitting sub-nanosecond pulses without the use of mixing baseband information upon a sinusoidal carrier. Thus UWB sends information using radar-like impulses by spreading its energy thinly over a vast spectrum and can operate at extremely low-power transmission within the noise floor where other forms of RF find it difficult or impossible to operate. As a result UWB offers low probability of detection (LPD), low probability of interception (LPI) as well as anti-jamming (AJ) properties in signal space. This paper analyzes and compares the vulnerability of UWB to narrowband and spread spectrum wireless network communication.

Cooley, H. Timothy

2010-07-01T23:59:59.000Z

471

Network Simulation  

SciTech Connect

A detailed introduction to the design, implementation and use of network simulation tools is presented. The requirements and issues faced in the design of simulators for wired and wireless networks are discussed. Abstractions such as packet- and fluid-level network models are covered. Several existing simulations are given as examples, with details and rationales regarding design decisions presented. Issues regarding performance and scalability are discussed in detail, describing how one can utilize distributed simulation methods to increase the scale and performance of a simulation environment. Finally, a case study of two simulation tools is presented that have been developed using distributed simulation techniques. This text is essential to any student, researcher or network architect desiring a detailed understanding of how network simulation tools are designed, implemented, and used.

Fujimoto, Richard [ORNL; Perumalla, Kalyan S [ORNL; Riley, George F. [Georgia Institute of Technology

2006-01-01T23:59:59.000Z

472

Communication Chains: A Methodology for Assessing the Effects of the Internet on Communication and Travel  

E-Print Network (OSTI)

Information and Communications Technology in the Puget Soundemergence of new communications technologies over the lastof less novel communications technologies. One such study,

Brown, Colby; Balepur, Prashant; Mokhtarian, Patricia L.

2005-01-01T23:59:59.000Z

473

DogoIDS: a mobile and active intrusion detection system for IEEE 802.11s wireless mesh networks  

Science Conference Proceedings (OSTI)

Wireless Mesh Networks (WMN) are particularly vulnerable to attacks, since they feature constraint nodes, multi-hop communication, and an open wireless communication channel. These features limit the feasibility of the deployment of contemporary Intrusion ... Keywords: intrusion detection, security, wireless mesh networks

Rodrigo do Carmo; Matthias Hollick

2013-04-01T23:59:59.000Z

474

Computer Networks and ISDN Systems, February, 1999. Architectural Considerations in the design of WDM-based Optical Access  

E-Print Network (OSTI)

and coax infrastructure already exists, hybrid architectures that utilize the existing copper or coax have of communication networks has transformed the way we live and work. As we progress further into the information age. The access network refers #12;to the portion of the communication infrastructure responsible for reaching

Modiano, Eytan

475

An integrated mobility and traffic model for resource allocation in wireless networks  

Science Conference Proceedings (OSTI)

In a wireless communications network, the movement of mobile users presents significant technical challenges to providing efficient access to the wired broadband network. In this paper, we construct a new analytical/numerical model that characterizes ... Keywords: admission control, mobility, resource allocation, traffic modeling, wireless networks

Hisashi Kobayashi; Shun-Zheng Yu; Brian L. Mark

2000-08-01T23:59:59.000Z

476

A wireless sensor network design tool to support building energy management  

Science Conference Proceedings (OSTI)

The physical location of sensor nodes strongly influences the performance of the network from the perspective of accurate data sensing and reliable communication. Therefore deployment planning can be regarded as an essential stepping stone to producing ... Keywords: building management system, heterogeneous wireless network infrastructure, industry foundation classes, wireless sensor network design

Antony Guinard; Alan McGibney; Dirk Pesch

2009-11-01T23:59:59.000Z

477

Understanding motivations for facebook use: usage metrics, network structure, and privacy  

Science Conference Proceedings (OSTI)

This study explores the links between motives for using a social network service and numerical measures of that activity. Specifically, it identified motives for Facebook use by employing a Uses and Gratifications (U&G) approach and then investigated ... Keywords: computer-mediated communication, facebook, privacy, social network sites, social networks, uses and gratifications

Tasos Spiliotopoulos; Ian Oakley

2013-04-01T23:59:59.000Z

478

Energy-efficient forwarding mechanism for wireless opportunistic networks in emergency scenarios  

Science Conference Proceedings (OSTI)

During emergency situations, the use of mobile devices and wireless opportunistic networks as a solution of destroyed or overused communication networks are vital. In these cases, the fast and reliable delivery of emergency information, together with ... Keywords: Emergency scenarios, Energy-efficiency, Opportunistic forwarding, Opportunistic networks, Performance evaluation

Abraham MartN-Campillo; Ramon Mart

2012-08-01T23:59:59.000Z

479

Knowledge-based duty cycle estimation in wireless sensor networks: Application for sound pressure monitoring  

Science Conference Proceedings (OSTI)

Wireless sensor networks comprise an important research area and a near future for industry and communications. Wireless sensor networks contain resource-constrained sensor nodes that are powered by small batteries, limited process and memory and wireless ... Keywords: Constrained device, Fuzzy rule based system, Multi-agent system, Sound pressure, Wireless sensor network

J. C. Cuevas-Martinez; J. Canada-Bago; J. A. Fernandez-Prieto; M. A. Gadeo-Martos

2013-02-01T23:59:59.000Z

480

An overview of body sensor networks in enabling pervasive healthcare and assistive environments  

Science Conference Proceedings (OSTI)

The use of sensor networks for healthcare, well-being, and working in extreme environments has long roots in the engineering sector in medicine and biology community. With the growing needs in ubiquitous communications and recent advances in very-low-power ... Keywords: body sensor networks, healthcare applications, ubiquitous computing, wireless body area networks

Charalampos Liolios; Charalampos Doukas; George Fourlas; Ilias Maglogiannis

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "network backhaul communications" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Quantifying the channel quality for interference-aware wireless sensor networks  

Science Conference Proceedings (OSTI)

Reliability of communications is key to expand application domains for sensor networks. Since Wireless Sensor Networks (WSN) operate in the license-free Industrial Scientific and Medical (ISM) bands and hence share the spectrum with other wireless technologies, ... Keywords: ISM bands, channel quality, dynamic resource adaptation, interference, wireless sensor networks

Claro Noda; Shashi Prabh; Mrio Alves; Carlo Alberto Boano; Thiemo Voigt

2011-12-01T23:59:59.000Z

482

The two-equal-disjoint path cover problem of Matching Composition Network  

Science Conference Proceedings (OSTI)

Embedding of paths have attracted much attention in the parallel processing. Many-to-many communication is one of the most central issues in various interconnection networks. A graph G is globally two-equal-disjoint path coverable if for any two distinct ... Keywords: Hamiltonian-connectivity, Interconnection networks, Matching Composition Networks, Two-equal-disjoint path cover, k disjoint path cover

Pao-Lien Lai; Hong-Chun Hsu

2008-06-01T23:59:59.000Z

483

Modeling and evaluation of ring-based interconnects for Network-on-Chip  

Science Conference Proceedings (OSTI)

A popular network topology for Network-on-Chip (NoC) implementations is the two-dimensional mesh, which has its drawbacks in the communication latency scalability, and the concentration of the traffic in the center of the mesh. In this paper, we consider ... Keywords: Hierarchical ring, Interconnect topologies, Mesh, Modeling, Network-on-Chip, SystemC

Stephan Bourduas; Zeljko Zilic

2011-01-01T23:59:59.000Z

484

Achieving dependability in sensor networks through automated requirements-based programming  

Science Conference Proceedings (OSTI)

A sensor network can be viewed as a distributed system consisting of many nodes (processes) that communicate and exchange data. Such a system, including an application running on top of the sensor network, is inherently difficult to model and validate. ... Keywords: Automatic code generation, Formal methods, Sensor networks

Michael G. Hinchey; James L. Rash; Christopher A. Rouff; Denis Gra?anin

2006-01-01T23:59:59.000Z

485

A robust fault-tolerant control strategy for networked control systems  

Science Conference Proceedings (OSTI)

Networked control systems (NCS) are one type of distributed control systems where serial communication networks is used to exchange system information and control signals between various physical components of the systems that may be physically distributed. ... Keywords: Deadbands, Networked control systems (NCS), Random time delays, Robust fault-tolerant control, T-S fuzzy modeling

Huo Zhihong; Zheng Yuan; Xu Chang

2011-03-01T23:59:59.000Z

486

QoS and energy aware routing for real-time traffic in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are being built to facilitate automated information gathering in military, industrial, environmental and surveillance applications. Many such applications of Sensor Networks require improved QoS (packet delivery within a defined ... Keywords: QoS routing, Real-Time communication, Sensor networks

Abinash Mahapatra; Kumar Anand; Dharma P. Agrawal

2006-02-01T23:59:59.000Z

487

A memetic algorithm for optimal dynamic design of wireless sensor networks  

Science Conference Proceedings (OSTI)

We present a memetic algorithm that dynamically optimizes the design of a wireless sensor network towards energy conservation and extension of the life span of the network, taking into consideration application-specific requirements, communication constraints ... Keywords: Design optimization, Energy conservation, Memetic algorithms, Wireless sensor networks

Konstantinos P. Ferentinos; Theodore A. Tsiligiridis

2010-02-01T23:59:59.000Z

488

Measuring air quality in city areas by vehicular wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper considers a micro-climate monitoring scenario, which usually requires deploying a large number of sensor nodes to capture environmental information. By exploiting vehicular sensor networks (VSNs), it is possible to equip fewer nodes on cars ... Keywords: Micro-climate monitoring, Opportunistic communication, Pervasive computing, Vehicular sensor network, Wireless sensor network

Shu-Chiung Hu; You-Chiun Wang; Chiuan-Yu Huang; Yu-Chee Tseng

2011-11-01T23:59:59.000Z

489

Models, Entropy and Information of Temporal Social Networks  

E-Print Network (OSTI)

Temporal social networks are characterized by {heterogeneous} duration of contacts, which can either follow a power-law distribution, such as in face-to-face interactions, or a Weibull distribution, such as in mobile-phone communication. Here we model the dynamics of face-to-face interaction and mobile phone communication by a reinforcement dynamics, which explains the data observed in these different types of social interactions. We quantify the information encoded in the dynamics of these networks by the entropy of temporal networks. Finally, we show evidence that human dynamics is able to modulate the information present in social network dynamics when it follows circadian rhythms and when it is interfacing with a new technology such as the mobile-phone communication technology.

Zhao, Kun; Bianconi, Ginestra

2013-01-01T23:59:59.000Z

490

Reference Models and Incentive Regulation of Electricity Distribution Networks: An Evaluation of Swedens Network Performance Assessment Model (NPAM)  

E-Print Network (OSTI)

? Network administration costs ? Cost of network losses ? Financial costs ? Return on capital vii. Deductions from revenues are made for quality of service using supply interruptions data of actual companies and customer willingness-to-pay (WTP) values... for the active networks of future characterised by: responsive industrial and household demand, micro- generation technologies, industrial CHP, decentralised renewable sources, smart meters, and advanced information and communications technologies...

Jamasb, Tooraj; Pollitt, Michael G.

491

NBP RFI: Communications Requirements- Reply Comments of AT&T Inc. |  

NLE Websites -- All DOE Office Websites (Extended Search)

Requirements- Reply Comments of AT&T Inc. Requirements- Reply Comments of AT&T Inc. NBP RFI: Communications Requirements- Reply Comments of AT&T Inc. AT&T Inc., on behalf of itself and its affiliates ("AT&T"), respectfully submits these reply comments in response to the Department Of Energy"s Request for Information ("RFI") on the communications requirements of electric utilities in Smart Grid deployments.1 In its initial comments, AT&T highlighted the expanding demand for network connectivity and how utilities can benefit from leveraging new network technologies deployed by commercial communications operators to optimize the performance, scalability, security, reliability and cost effectiveness of their Smart Grid applications deployments. Commercial communications

492

1) What are the current and future communications needs of utilities, including  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(1) What are the current and future communications needs of utilities, including for the (1) What are the current and future communications needs of utilities, including for the deployment of new Smart Grid applications, and how are these needs being met? The current communication needs of SCE include: telephony, data, video, voice dispatch, mobile data, grid monitoring, grid control, tele-protection, customer communication, load management, automated meter reading, and collaboration capabilities ranging from virtual meetings to e-learning. SCE is using a combination of private, leased, and shared telecommunication networks to support these requirements. Those applications that require high availability, low latency, and stringent security rely on a private telecommunications network (SCEnet). A combination of transport media are

493

Using statistical information to improve communication in MIMO networks  

E-Print Network (OSTI)

channel reciprocity. In FDD systems, this technique stillare close [7]. However, in FDD systems where the uplink andSuch feedback can be used in FDD systems where the transmit

Ghosh, Sagnik

2012-01-01T23:59:59.000Z

494

VERY HIGH-SPEED DRILL STRING COMMUNICATIONS NETWORK  

Science Conference Proceedings (OSTI)

Testing of recent upgrades to the drill pipe telemetry system in a 1000-ft vertical well has shown that the new system can achieve at least 1,000 ft passive transmission distance with sufficient bandwidth to accommodate a digital transmission rate of 2 Mbit/sec. Digitized data from a module at the bottom of the well has been successfully transmitted through the transmission line to the top of the well for a period of approximately one month. Manufacture of 30 prototype range 2 drill pipes has demonstrated greater simplicity of manufacturing and greater consistency of electrical characteristics from part to part, as compared to the first production run previously reported. Further work is needed to improve the high pressure capability of the system and to improve the robustness of the system in a high-vibration environment.

David S. Pixton

2002-08-01T23:59:59.000Z

495

Network Communication as a Service-Oriented Capability  

E-Print Network (OSTI)

of Science: Advanced Scientific Computing Research, Basicof Science, Advanced Scientific Computing Research (ASCR)

Johnston, William

2008-01-01T23:59:59.000Z

496

11th FloorView ............................ 2 Network & Communications  

E-Print Network (OSTI)

electrical engineering. Later he joined the Metropolitan Vick- ers ("Metrovick") Electrical Company as an apprentice for two years, but subsequently went to St John's College, Cambridge, and took the Mathematical with a local electrical company, primed Cockcroft for his future success. He joined Ernest Rutherford, who had

Gent, Universiteit

497

Lucal Management of a Global Resource in a Communication Network  

E-Print Network (OSTI)

. In Proceedings of the 6th Annual ACM Symposium on Principles of Distributed Computing (Vancouver, B.C., Canada, Aug. 10- 12). ACM, New York, pp. 109- 124; and AWER- BUCH,B., AND PLOTKIN,S. 1987. Approximating, NJ 07974. The research of B. Awerbuch was supported by Air Force contract TNDGAFOSR-86-O078, ARO

Garg, Vijay

498

Network Communication as a Service-Oriented Capability  

E-Print Network (OSTI)

the ITER experimental fusion reactor being built in France)with experiments in Tokamak fusion reactors. The experiments

Johnston, William

2008-01-01T23:59:59.000Z

499

LOCOMOTION (TERRESTRIAL AND AERIAL) AND COMMUNICATION OF AUTONOMOUS ROBOT NETWORKS  

E-Print Network (OSTI)

for a layup on Saturday at EnergySolutions Arena in Salt Lake City. "Our coaches had a great gameplan for us or not the microbes might be harmful to humans. The purpose of the assign- ment, according to plant and wildlife hiding be- hind a brand and start reping a brand that reflects you. The time has come to plant your print

Peterson, Blake R.

500

Network Communication as a Service-Oriented Capability  

E-Print Network (OSTI)

10] Planning Workshops-Office of Science Data-Managementmission of DOEs Office of Science (SC). ESnet must provideESnet reflect the scope of Office of Science collaborations.

Johnston, William

2008-01-01T23:59:59.000Z