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1

Comments of Hughes Network Systems, LLC and Inmarsat Inc. | Department of  

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

Hughes Network Systems, LLC and Inmarsat Inc. Hughes Network Systems, LLC and Inmarsat Inc. Comments of Hughes Network Systems, LLC and Inmarsat Inc. Hughes Network Systems, LLC ("Hughes") and Inmarsat Inc. ("Inmarsat") hereby submit these comments in response to the Department of Energy's Request for Information ("RFI") in the above-referenced proceeding. Hughes and Inmarsat are global leaders in providing satellite networks and services and satellite services, respectively. Hughes and Inmarsat, both global satellite communications leaders, have a long-standing commercial relationship and have worked together in various roles on a variety of satellite communications projects over many years, including in the area of Smart Grid projects. The companies submit these joint comments to explain

2

The Challenge of Greening Energy Systems1 Alain Joseph and Larry Hughes  

E-Print Network (OSTI)

ERG2006/11 The Challenge of Greening Energy Systems1 Alain Joseph and Larry Hughes Energy Research at the second International Green Energy Conference (IGEC) held at the University of Ontario Institute of Technology in June 2006 #12;Joseph and Hughes: The Challenge of Greening Energy Systems 1 Abstract Human

Hughes, Larry

3

Hugh Outhred  

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

Hugh Outhred Assoc. Prof. of Electrical Engineering Centre for Photovoltaic Engineering University of New South Wales, Sydney, Australia Hugh Outhred is in the School of Electrical...

4

Hugh Chen | Department of Energy  

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

Hugh Chen Hugh Chen About Us Hugh Chen - Deputy Director for Finance, Incentives, and Program Analysis Hugh Chen Hugh Chen is the Deputy Director for Finance, Incentives, and Program Analysis within the Office of Energy Policy and Systems Analysis (EPSA) at the U.S. Department of Energy. Within EPSA, Hugh leads an office that provides independent analysis on energy-related markets, policies, and investments that support the nation's energy goals. Prior to joining EPSA, Hugh was the Director of Program Analysis and Evaluation (PA&E) within the Office of the Chief Financial Officer (CFO). At PA&E, Hugh was responsible for goals, performance, and investment decision analysis across DOE's efforts in clean energy, national security, and basic research. Prior to DOE, Hugh spent five years in the Pentagon as a Senior Analyst

5

Microsoft Word - Hughes + ISAT DOE NBP Smart Grid RFI comments 7-12-10 _clean_.docx  

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

D.C. 20585 D.C. 20585 ____________________________________ In the Matter of ) ) Implementing the National Broadband ) Plan by Studying the Communications ) Docket ID: DOE-HQ-2009-0003-0819 Requirements of Electric Utilities to ) Inform Federal Smart Grid Policy ) ) Request for Information ) ____________________________________) COMMENTS OF HUGHES NETWORK SYSTEMS, LLC AND INMARSAT INC. Hughes Network Systems, LLC ("Hughes") and Inmarsat Inc. ("Inmarsat") hereby submit these comments in response to the Department of Energy's Request for Information ("RFI") in the above-referenced proceeding. 1 Hughes and Inmarsat are global leaders in providing satellite networks and services and satellite services, respectively. Hughes and Inmarsat, both global

6

Hugh Chen  

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

Yu-Han (Hugh) Chen is the Director of Program Analysis and Evaluation (PA&E) within the Office of the Chief Financial Officer (CFO) at the Department of Energy (DOE). Prior to his...

7

Hugh Outhred  

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

Hugh Outhred Hugh Outhred Assoc. Prof. of Electrical Engineering Centre for Photovoltaic Engineering University of New South Wales, Sydney, Australia This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is not otherwise associated with Lawrence Berkeley National Laboratory, unless specifically identified as a Berkeley Lab staff member. Hugh Outhred is in the School of Electrical Engineering & Telecommunications at the University of New South Wales, Sydney, Australia. He is also a member of the National Electricity Tribunal (a quasi-judicial appeal body associated with Australia's National Electricity Market). His research interests are in electricity industry restructuring and sustainability.Expertise: electricity industry restructuring and

8

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

E-Print Network (OSTI)

distribution networks is proposed. Traditionally, the medium-voltage part of the electrical grid is operatedMulti-Agent Approach to Electrical Distribution Networks Control Sébastien Rumley*, Elvira Kägi (i.e. bulk distribution) is too complex. Furthermore, the great amount of data to be handled on- line

Catholic University of Chile (Universidad Católica de Chile)

9

STATEMENT OF CONSIDERATIONS REQUES'f BY BAKER HUGHES OILFIELD OPERATIONS, INC. ('"BAKER HUGHES")  

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

REQUES'f BY BAKER HUGHES OILFIELD OPERATIONS, INC. ('"BAKER HUGHES") REQUES'f BY BAKER HUGHES OILFIELD OPERATIONS, INC. ('"BAKER HUGHES") FOR AN ADVANCE WAIVER OF PATENT RfGHTS UNDER DOE AWARD NO. DE- EE0005505 ; W(A) 2012-013 Baker Hughes has requested a waiver of patent ri ghts of the United States of Americ a for all s ul~ject inventions arising from its participation tmder the above referenced award entitled ·'D irectional Measurement- Wh ile-Drilling System for Geothermal Applications." The purpose of the av,rard is to develop a reliable Directional Measurement-While·· Drill ing (MWD) System for the creation of Enhanced Geothermal Systems (EGS). The sys tem to be developed under this award is a probe-based MWD tool for directional drilling that is alternator or battery povvcred, contains a navigation package capable of measuring inclinati

10

Networked Control Systems Group  

Science Conference Proceedings (OSTI)

... and deploys measurement science for sensor networks and control systems used in manufacturing, construction, and other cyber-physical systems ...

2012-08-30T23:59:59.000Z

11

Solar for Mining Hugh Rudnick  

E-Print Network (OSTI)

Solar for Mining Hugh Rudnick Professor Pontificia Universidad Católica de Chile #12;Solar Energy in Mining · Solar energy is becoming affordable · Attractive potential use for mining purposes · Must solve the storage requirement to increase its participation worldwide #12;Solar Energy in Mining · Electrical Energy

Catholic University of Chile (Universidad Católica de Chile)

12

Vehicle Location and Navigation Systems based on LEDs Grantham Pang, Hugh Liu, Chi-Ho Chan, Thomas Kwan  

E-Print Network (OSTI)

Traffic lights, traffic signal devices, message display boards are being replaced by Light Emitting Diodes for their discussions in meetings. REFERENCES 1. "Audio information system using light-emitting diodes", E. Yang, D. 2. "Light emitting diode dot matrix display system with audio output", G. Pang, S.W. Cheung, T. Kwan

Pang, Grantham

13

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

14

Networked Aquatic Sampling System  

E-Print Network (OSTI)

system for field operation Wireless 802.11b based networkOperation Continuous real time data acquisition and logging of pertinent environmental parameters WirelessOperation Network of 10 static nodes and 1 robotic boat AODV based ad-hoc 802.11b wireless

2005-01-01T23:59:59.000Z

15

FIA-12-0010 - In the Matter of Hughes Socol Piers Resnick DYM...  

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

10 - In the Matter of Hughes Socol Piers Resnick DYM, Ltd. FIA-12-0010 - In the Matter of Hughes Socol Piers Resnick DYM, Ltd. Hughes Socol Piers Resnick DYM, Ltd. (Hughes Socol)...

16

SG Network System Requirements Specification  

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

SG Network System Requirements Specification SG Network System Requirements Specification Interim Release 3 5/17/2010 - 2 - Table of Contents Document History ....................................................................................................................................... - 3 - Revision History .......................................................................................................................................... - 3 - Preface........................................................................................................................................................ - 4 - Authors........................................................................................................................................................ - 6 -

17

Urban Network System Practices  

Science Conference Proceedings (OSTI)

This report describes the results of Phase I of a multi-year effort to identify noteworthy practices in managing urban network systems. The report profiles the practices (people, processes, and technology) in place at two host utilities: Seattle City Light (SCL), a small (375,000 customers) municipal utility, and Consolidated Edison (Con Edison), a large (3.2 million customers) investor-owned utility. The results illustrate the similarities and differences between the two utilities, describe the challeng...

2008-07-23T23:59:59.000Z

18

Urban Network Systems Practices  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with CenterPoint Energy (CenterPoint). This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. The report profiles the practices (that is, people, processes, and technology) in place at CenterPoint, a company serving the Houston, Texas, metropolitan area. This report is one of a serie...

2010-12-02T23:59:59.000Z

19

STATEMENT OF CONSIDERATIONS REQUEST BY BAKER HUGHES INTEQ FOR AN ADVANCE WAIVER OF  

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

BAKER HUGHES INTEQ FOR AN ADVANCE WAIVER OF BAKER HUGHES INTEQ FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC26-04NT15473: W(A)-04-068, CH-1246 The Petitioner, Baker Hughes INTEQ (BHI) was awarded this cooperative agreement for the performance of work entitled, "Microhole Smart Steering and Logging While Drilling." The purpose of the cooperative agreement is to develop a modular and effective Coiled Tubing Drilling (CTD) system that allows operators to produce existing oil reservoirs, mainly on the North American continent, in a much more effective way than is possible today. The scope of work will include a project that will develop a rib steering device in conjunction with an integral high-performance downhole motor, and a resistivity sensor for formation evaluation.

20

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

Note: This page contains sample records for the topic "hughes network systems" 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

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

on control systems . . . . . . . . . . . . . . . . 7.2control system. . . . . . . . . . . . . . . . . . . . . . . . . .8 Stabilization of Networked Control Systems using 8.1

Amin, Saurabh

2011-01-01T23:59:59.000Z

22

744 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning--Part I  

E-Print Network (OSTI)

744 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning--Part I: Simultaneous Network and Transformer Optimization Alejandro Navarro, Member, IEEE, and Hugh-voltage distribution networks. Combined optimization of transformers and associated networks is per- formed

Rudnick, Hugh

23

The four `R's of energy security1 Larry Hughes  

E-Print Network (OSTI)

ERG/200902 The four `R's of energy security1 Larry Hughes Energy Research Group Department A slightly modified version of this paper was printed in Energy Policy, for copies, please visit http://dx.doi.org/10.1016/j.enpol.2009.02.038 #12;The four `R's of energy security Larry Hughes Energy Research Group

Hughes, Larry

24

Wireless sensor network operating systems: a survey  

Science Conference Proceedings (OSTI)

The design of operating system for Wireless Sensor Network (WSN) deviates from the traditional operating system design due to their specific characteristics like constrained resources, high dynamics and inaccessible deployment environments. We ... Keywords: TinyOS, WSN operating systems, WSNs, ad-hoc networks, applications, characteristics, classification framework, design, embedded systems, reprogramming, survey, virtual machines, wireless networks, wireless sensor networks

Adi Mallikarjuna V. Reddy; A.V.U. Phani Kumar; D. Janakiram; G. Ashok Kumar

2009-08-01T23:59:59.000Z

25

Hughes Power & Light Co | Open Energy Information  

Open Energy Info (EERE)

Hughes Power & Light Co Hughes Power & Light Co Jump to: navigation, search Name Hughes Power & Light Co Place Alaska Utility Id 9000 Utility Location Yes Ownership I NERC Location AK Operates Generating Plant Yes Activity Generation Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates Residential: $0.7200/kWh Commercial: $0.7550/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Hughes_Power_%26_Light_Co&oldid=41084

26

STATEMENT OF CONSIDERATIONS REQUEST BY BAKER HUGHES INTEQ FOR AN ADVANCE WAIVER OF DOMESTIC  

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

t t 0 STATEMENT OF CONSIDERATIONS REQUEST BY BAKER HUGHES INTEQ FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC26-05NT15488; W(A)-05-016, CH-1279 The Petitioner, Baker Hughes INTEQ (BHI) was awarded this cooperative agreement for the performance of work entitled, "Microhole Wireless Steering and Logging While Drilling System." The purpose of the cooperative agreement is to develop a modular and effective Coiled Tubing Drilling (CTD) system that allows operators to produce existing oil reservoirs, mainly on the North American continent, in a much more effective way than is possible today. This will be accomplished by providing accurate and precise real-time geosteering even under conditions where the rig surface gear and equipment need to be minimized for cost

27

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"

28

Controller synthesis for networked control systems  

Science Conference Proceedings (OSTI)

This paper presents a discrete-time model for networked control systems (NCSs) that incorporates all network phenomena: time-varying sampling intervals, packet dropouts and time-varying delays that may be both smaller and larger than the sampling interval. ... Keywords: Linear matrix inequalities, Networked control systems, Sampled-data control, Stability analysis, Time-varying delay

M. B. G. Cloosterman; L. Hetel; N. van de Wouw; W. P. M. H. Heemels; J. Daafouz; H. Nijmeijer

2010-10-01T23:59:59.000Z

29

Workload and network-optimized computing systems  

Science Conference Proceedings (OSTI)

This paper describes a recent system-level trend toward the use of massive on-chip parallelism combined with efficient hardware accelerators and integrated networking to enable new classes of applications and computing-systems functionality. This system ...

D. P. LaPotin; S. Daijavad; C. L. Johnson; S. W. Hunter; K. Ishizaki; H. Franke; H. D. Achilles; D. P. Dumarot; N. A. Greco; B. Davari

2010-01-01T23:59:59.000Z

30

Photovoltaic Systems Interconnected onto Network Distribution Systems--Success Stories  

DOE Green Energy (OSTI)

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

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

2009-04-01T23:59:59.000Z

31

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

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

Network Configuration & System Design Network Configuration & System Design About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Network Configuration and System Design Overview | Transmission/Storage | Design Criteria | Importance of Storage| Overall Pipeline System Configuration Overview A principal requirement of the natural gas transmission system is that it be capable of meeting the peak demand of its shippers who have contracts for firm service. To meet this requirement, the facilities developed by the natural gas transmission industry are a combination of transmission pipelines to bring the gas to the market areas and of underground natural gas storage sites and liquefied natural gas (LNG) peaking facilities located in the market areas.

32

Forensic analysis of SCADA systems and networks  

Science Conference Proceedings (OSTI)

Supervisory Control and Data Acquisition (SCADA) systems are commonly used to automate and control industrial processes. Modern SCADA protocols leverage TCP/IP to transport sensor data and control signals. Also, corporate IT infrastructures ... Keywords: DCSs, Modbus, SCADA, data acquisition, distributed control systems, industrial environments, inforensics, network forensics, network monitoring, process monitoring, security, supervisory control

T. Kilpatrick; J. Gonzalez; R. Chandia; M. Papa; S. Shenoi

2008-02-01T23:59:59.000Z

33

Neural network based system for equipment surveillance  

DOE Patents (OSTI)

A method and system are disclosed for performing surveillance of transient signals of an industrial device to ascertain the operating state. The method and system involves the steps of reading into a memory training data, determining neural network weighting values until achieving target outputs close to the neural network output. If the target outputs are inadequate, wavelet parameters are determined to yield neural network outputs close to the desired set of target outputs and then providing signals characteristic of an industrial process and comparing the neural network output to the industrial process signals to evaluate the operating state of the industrial process. 33 figs.

Vilim, R.B.; Gross, K.C.; Wegerich, S.W.

1998-04-28T23:59:59.000Z

34

Neural network based system for equipment surveillance  

DOE Patents (OSTI)

A method and system for performing surveillance of transient signals of an industrial device to ascertain the operating state. The method and system involves the steps of reading into a memory training data, determining neural network weighting values until achieving target outputs close to the neural network output. If the target outputs are inadequate, wavelet parameters are determined to yield neural network outputs close to the desired set of target outputs and then providing signals characteristic of an industrial process and comparing the neural network output to the industrial process signals to evaluate the operating state of the industrial process.

Vilim, Richard B. (Aurora, IL); Gross, Kenneth C. (Bolingbrook, IL); Wegerich, Stephan W. (Glendale Hts., IL)

1998-01-01T23:59:59.000Z

35

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

36

A Practical System for Centralized Network Control  

E-Print Network (OSTI)

Views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of Microsoft, NSF, or the U.S. government. Keywords: Centralized Network Control, Clean-slate Network Design, Network Dissemination Plane, IP networking is a spectacular success, catalyzing the diffusion of data networking across academic institutions, governments, businesses, and homes worldwide. Yet, despite the fundamental importance of this infrastructure, todays networks are surprisingly fragile and increasingly difficult to configure, control, and maintain. As our dependence on data networking grows, so do the risks of security breaches, large-scale outages, and service disruptions. We believe that the root of these problems lies in the complexity of the control and management planes the software and protocols coordinating network elementsand particularly the way the decision logic and the distributed-systems issues are inexorably intertwined. The research community advocates a complete refactoring of the functionality and proposes a new architecture which they call 4D, after the architectures four planes: decision, dissemination, discovery, and data. The 4D architecture pulls decision-making logic out of the network elements to create a logically centralized decision plane, where network-level objectives and policies are specified and enforced by direct configuration of state on individual network elements.

Hong Yan; David Andersen; Srinivasan Seshan; David A. Maltz

2010-01-01T23:59:59.000Z

37

ACT4: Networked Aquatic Sampling System  

E-Print Network (OSTI)

system for field operation Wireless 802.11b based networkOperation Continuous real time data acquisition and logging of pertinent environmental parameters WirelessOperation Network of 10 static nodes and 1 robotic boat AODV based ad-hoc 802.11b wireless

2005-01-01T23:59:59.000Z

38

Hughes_DPP2007_slide01-09.pdf  

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

H-mode performance and pedestal H-mode performance and pedestal studies with enhanced particle control on Alcator C-Mod J.W. Hughes, B. LaBombard, M. Greenwald, A. Hubbard, B. Lipschultz, K. Marr, R. McDermott, M. Reinke, J.L. Terry MIT Plasma Science and Fusion Center American Physical Society 49th Annual Meeting of the Division of Plasma Physics Orlando, FL 14 November 2007 J.W. Hughes et al. "H-mode performance and pedestal studies with enhanced particle control on Alcator C-Mod" 49th APS-DPP, Orlando FL, 14 November 2007 Slide x of 9 Goal: Understand influences of particle control on H-mode behavior 2 Density control desirable in H-mode - Mitigate unwanted density rises that deteriorate confinement - Extend operation to lower collisionality for studies of ELMs and core density peaking

39

Langston Hughes Elementary School Renewable Energy  

E-Print Network (OSTI)

_______________________________________ 24 3.1.2 Daylight _____________________________________________ 26 3.1.3 HVAC Systems-Test logistics. Gary Schmidt provided invaluable contributions in programming the survey and Mini-Test systems Support: The authors wish to thank Chris Hunt of City Visual Systems Ltd, at City College, London, for his

40

Computer System, Cluster, and Networking Summer Institute Program...  

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

System, Cluster, and Networking Summer Institute Program Description The Computer System, Cluster, and Networking Summer Institute (CSCNSI) is a focused technical enrichment...

Note: This page contains sample records for the topic "hughes network systems" 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

Intelligent Lighting System Using Wireless Sensor Networks  

E-Print Network (OSTI)

This paper examines the use of Wireless Sensor Networks interfaced with light fittings to allow for daylight substitution techniques to reduce energy usage in existing buildings. This creates a wire free system for existing buildings with minimal disruption and cost.

Kumaar, A A Nippun; TSB, Sudarshan; 10.5121/ijasuc.2010.1402

2011-01-01T23:59:59.000Z

42

Increasing the robustness of networked systems  

E-Print Network (OSTI)

What popular news do you recall about networked systems? You've probably heard about the several hour failure at Amazon's computing utility that knocked down many startups for several hours, or the attacks that forced the ...

Kandula, Srikanth

2009-01-01T23:59:59.000Z

43

Network File System (NFS) version 4 Protocol  

Science Conference Proceedings (OSTI)

The Network File System (NFS) version 4 is a distributed filesystem protocol which owes heritage to NFS protocol version 2, RFC 1094, and version 3, RFC 1813. Unlike earlier versions, the NFS version 4 protocol supports traditional file access while ...

S. Shepler; B. Callaghan; D. Robinson; R. Thurlow; C. Beame; M. Eisler; D. Noveck

2003-04-01T23:59:59.000Z

44

Network assisted file system consistency checking  

E-Print Network (OSTI)

This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary ...

Zehender, Nicholas (Nicholas G.)

2011-01-01T23:59:59.000Z

45

Network support for system initiated checkpoints  

SciTech Connect

A system, method and computer program product for supporting system initiated checkpoints in parallel computing systems. The system and method generates selective control signals to perform checkpointing of system related data in presence of messaging activity associated with a user application running at the node. The checkpointing is initiated by the system such that checkpoint data of a plurality of network nodes may be obtained even in the presence of user applications running on highly parallel computers that include ongoing user messaging activity.

Chen, Dong; Heidelberger, Philip

2013-01-29T23:59:59.000Z

46

Key issues of RFID reader network system  

Science Conference Proceedings (OSTI)

RFID system is used widely in different applications and comes in a myriad of forms today. It is doomed to be concerned by people and still be the hot spot of research in the next few years. In this paper, Key issues of RFID reader network system are ... Keywords: RFID, WSN, anti-collision algorithm, taxonomy

Leian Liu; Dashun yan; Jiapei Wu; Hongjiang Wang

2009-09-01T23:59:59.000Z

47

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

48

Statistically validated networks in bipartite complex systems  

E-Print Network (OSTI)

Many complex systems present an intrinsic bipartite nature and are often described and modeled in terms of networks [1-5]. Examples include movies and actors [1, 2, 4], authors and scientific papers [6-9], email accounts and emails [10], plants and animals that pollinate them [11, 12]. Bipartite networks are often very heterogeneous in the number of relationships that the elements of one set establish with the elements of the other set. When one constructs a projected network with nodes from only one set, the system heterogeneity makes it very difficult to identify preferential links between the elements. Here we introduce an unsupervised method to statistically validate each link of the projected network against a null hypothesis taking into account the heterogeneity of the system. We apply our method to three different systems, namely the set of clusters of orthologous genes (COG) in completely sequenced genomes [13, 14], a set of daily returns of 500 US financial stocks, and the set of world movies of the ...

Tumminello, Michele; Lillo, Fabrizio; Piilo, Jyrki; Mantegna, Rosario N

2010-01-01T23:59:59.000Z

49

Review: From wireless sensor networks towards cyber physical systems  

Science Conference Proceedings (OSTI)

In the past two decades, a lot of research activities have been dedicated to the fields of mobile ad hoc network (MANET) and wireless sensor networks (WSN). More recently, the cyber physical system (CPS) has emerged as a promising direction to enrich ... Keywords: Cyber physical system, Internet technology, Mobile ad hoc network, Pervasive computing, Sensing and actuation, Wireless sensor network

Fang-Jing Wu; Yu-Fen Kao; Yu-Chee Tseng

2011-08-01T23:59:59.000Z

50

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

51

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

52

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

E-Print Network (OSTI)

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

Cheung, Natalie Wen Yua

2011-01-01T23:59:59.000Z

53

Multisensor Module for Networked Infomechanical Systems  

E-Print Network (OSTI)

Wireless networks links also include interfaces to distributed mote networks. Energy for MultiSensor node operation

Jason Gordon; Kris Porter; Lisa Shirachi; Rachel Scollans; Victor Chen; William Kaiser

2005-01-01T23:59:59.000Z

54

Baldrige Award Recipients--AT&T Network Systems Group ...  

Science Conference Proceedings (OSTI)

... TSBU is the world's second largest maker of transmission systems ... companies, private networks, interexchange carriers, cable television companies ...

2013-09-11T23:59:59.000Z

55

System and method for networking electrochemical devices  

DOE Patents (OSTI)

An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. The improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

Williams, Mark C. (Morgantown, WV); Wimer, John G. (Morgantown, WV); Archer, David H. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

56

Urban Network Systems - Technologies and Best Practices  

Science Conference Proceedings (OSTI)

This report describes the results of Phase II of a multiyear effort to identify noteworthy practices in managing urban network systems. The report profiles the practices (people, processes, and technology) in place at one host utility, The Illuminating Company (CEI), a FirstEnergy company serving the greater Cleveland area. In addition, this report highlights the similarities and differences in practices in place at The Illuminating Company and at two other utilities, Seattle City Light (SCL) and Con Edi...

2009-06-30T23:59:59.000Z

57

Pathways, Networks and Systems Medicine Conferences  

Science Conference Proceedings (OSTI)

The 6th Pathways, Networks and Systems Medicine Conference was held at the Minoa Palace Conference Center, Chania, Crete, Greece (16-21 June 2008). The Organizing Committee was composed of Joe Nadeau (CWRU, Cleveland), Rudi Balling (German Research Centre, Brauschweig), David Galas (Institute for Systems Biology, Seattle), Lee Hood (Institute for Systems Biology, Seattle), Diane Isonaka (Seattle), Fotis Kafatos (Imperial College, London), John Lambris (Univ. Pennsylvania, Philadelphia),Harris Lewin (Univ. of Indiana, Urbana-Champaign), Edison Liu (Genome Institute of Singapore, Singapore), and Shankar Subramaniam (Univ. California, San Diego). A total of 101 individuals from 21 countries participated in the conference: USA (48), Canada (5), France (5), Austria (4), Germany (3), Italy (3), UK (3), Greece (2), New Zealand (2), Singapore (2), Argentina (1), Australia (1), Cuba (1), Denmark (1), Japan (1), Mexico (1), Netherlands (1), Spain (1), Sweden (1), Switzerland (1). With respect to speakers, 29 were established faculty members and 13 were graduate students or postdoctoral fellows. With respect to gender representation, among speakers, 13 were female and 28 were male, and among all participants 43 were female and 58 were male. Program these included the following topics: Cancer Pathways and Networks (Day 1), Metabolic Disease Networks (Day 2), Day 3 ? Organs, Pathways and Stem Cells (Day 3), and Day 4 ? Inflammation, Immunity, Microbes and the Environment (Day 4). Proceedings of the Conference were not published.

Nadeau, Joseph H. [Pacific Northwest Research Institute] [Pacific Northwest Research Institute

2013-11-25T23:59:59.000Z

58

CSP 543: Multimedia Networking Atel Puri, Tsuhan Chen, Multimedia Systems, Standards, and Networks, ISBN 082479303X  

E-Print Network (OSTI)

CSP 543: Multimedia Networking Texts Atel Puri, Tsuhan Chen, Multimedia Systems, Standards Wireless 6 hours Total 45 hours Edited March 2006 (html, css checks) CSP 543: Multimedia Networking - CS

Heller, Barbara

59

FIA-13-0057 - In the Matter of Shawn R. Hughes | Department of Energy  

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

FIA-13-0057 - In the Matter of Shawn R. Hughes FIA-13-0057 - In the Matter of Shawn R. Hughes FIA-13-0057 - In the Matter of Shawn R. Hughes On September 10, 2013, the Office of Hearings and Appeals (OHA) issued a decision denying an appeal (Appeal) from a Freedom of Information Act (FOIA) determination issued by the Department of Energy's Office of Scientific and Technical Information (OSTI). The Appellant, Shawn R. Hughes, contested the adequacy of OSTI's search of records, and also argued that the Office of Information Resources (OIR) should have transferred his FOIA Request to the Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratory (SNL) to conduct a search for records. After the Appeal was filed, OIR informed OHA that it transferred the Appellant's FOIA Request to the National Nuclear Security

60

FIA-13-0057 - In the Matter of Shawn R. Hughes | Department of Energy  

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

7 - In the Matter of Shawn R. Hughes 7 - In the Matter of Shawn R. Hughes FIA-13-0057 - In the Matter of Shawn R. Hughes On September 10, 2013, the Office of Hearings and Appeals (OHA) issued a decision denying an appeal (Appeal) from a Freedom of Information Act (FOIA) determination issued by the Department of Energy's Office of Scientific and Technical Information (OSTI). The Appellant, Shawn R. Hughes, contested the adequacy of OSTI's search of records, and also argued that the Office of Information Resources (OIR) should have transferred his FOIA Request to the Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratory (SNL) to conduct a search for records. After the Appeal was filed, OIR informed OHA that it transferred the Appellant's FOIA Request to the National Nuclear Security

Note: This page contains sample records for the topic "hughes network systems" 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

Resilient synchronization in robust networked multi-agent systems  

Science Conference Proceedings (OSTI)

In this paper, we study local interaction rules that enable a network of dynamic agents to synchronize to a common zero-input state trajectory despite the malicious influence of a subset of adversary agents. The agents in the networked system influence ... Keywords: adversary, networked multi-agent system, resilience, synchronization

Heath J. LeBlanc; Xenofon D. Koutsoukos

2013-04-01T23:59:59.000Z

62

Proceedings of the 3rd Workshop on Social Network Systems  

Science Conference Proceedings (OSTI)

The Third Workshop on Social Network Systems (SNS'10) will gather researchers to discuss novel ideas about computer systems and social networks. Online social networks are among the most popular sites on the Web and continue to grow rapidly. They provide ...

Eiko Yoneki; Elie Bursztein; Tao Stein

2010-04-01T23:59:59.000Z

63

Guideline for Securing Control Systems and Corporate Network Interfaces  

Science Conference Proceedings (OSTI)

Until recent years, many electric utilities have dealt with the cyber security issues of protecting control system networks by keeping the control system and corporate system networks physically separate. Others have prohibited remote access to control system networks, requiring all connections be made onsite. While these techniques effectively protect the system from external cyber-security-based threats, they are restricting a growing requirement for access, particularly among corporate users who need ...

2005-12-05T23:59:59.000Z

64

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

9.2.2 Security Interdependence . . . . . . Bounded Control7 Security Constrained Networked Control 7.1Inputs 9 Security Interdependencies for Networked 9.1

Amin, Saurabh

2011-01-01T23:59:59.000Z

65

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

66

Energy Consumption Issues on Mobile Network Systems  

Science Conference Proceedings (OSTI)

This paper describes energy consumption demographic data in operating real mobile networks. We examine published data from NTT DoCoMo, which is the largest mobile telecommunication operator in Japan and operating nation-wide 3G networks, and identify ... Keywords: Moble Network, Power Consumption, Battery, CO2, Green Network

Minoru Etoh; Tomoyuki Ohya; Yuji Nakayama

2008-07-01T23:59:59.000Z

67

V-125: Cisco Connected Grid Network Management System Multiple  

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

5: Cisco Connected Grid Network Management System Multiple 5: Cisco Connected Grid Network Management System Multiple Vulnerabilities V-125: Cisco Connected Grid Network Management System Multiple Vulnerabilities April 3, 2013 - 1:44am Addthis PROBLEM: Cisco Connected Grid Network Management System Multiple Vulnerabilities PLATFORM: Cisco Connected Grid Network Management System 2.x ABSTRACT: Some vulnerabilities have been reported in Cisco Connected Grid Network Management System. REFERENCE LINKS: Cisco Security Notice CVE-2013-1163 Cisco Security Notice CVE-2013-1171 Secunia Advisory SA52834 SecurityTracker Alert ID: 1028374 SecurityTracker Alert ID: 1028373 CVE-2013-1163 CVE-2013-1171 IMPACT ASSESSMENT: Medium DISCUSSION: 1) Certain input related to the element list component is not properly sanitised before being returned to the user. This can be exploited to

68

V-125: Cisco Connected Grid Network Management System Multiple  

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

5: Cisco Connected Grid Network Management System Multiple 5: Cisco Connected Grid Network Management System Multiple Vulnerabilities V-125: Cisco Connected Grid Network Management System Multiple Vulnerabilities April 3, 2013 - 1:44am Addthis PROBLEM: Cisco Connected Grid Network Management System Multiple Vulnerabilities PLATFORM: Cisco Connected Grid Network Management System 2.x ABSTRACT: Some vulnerabilities have been reported in Cisco Connected Grid Network Management System. REFERENCE LINKS: Cisco Security Notice CVE-2013-1163 Cisco Security Notice CVE-2013-1171 Secunia Advisory SA52834 SecurityTracker Alert ID: 1028374 SecurityTracker Alert ID: 1028373 CVE-2013-1163 CVE-2013-1171 IMPACT ASSESSMENT: Medium DISCUSSION: 1) Certain input related to the element list component is not properly sanitised before being returned to the user. This can be exploited to

69

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

70

Network-wide deployment of intrusion detection and prevention systems  

Science Conference Proceedings (OSTI)

Traditional efforts for scaling network intrusion detection (NIDS) and intrusion prevention systems (NIPS) have largely focused on a single-vantage-point view. In this paper, we explore an alternative design that exploits spatial, network-wide opportunities ... Keywords: intrusion detection, network management

Vyas Sekar; Ravishankar Krishnaswamy; Anupam Gupta; Michael K. Reiter

2010-11-01T23:59:59.000Z

71

System and method for generating a relationship network  

DOE Patents (OSTI)

A computer-implemented system and process for generating a relationship network is disclosed. The system provides a set of data items to be related and generates variable length data vectors to represent the relationships between the terms within each data item. The system can be used to generate a relationship network for documents, images, or any other type of file. This relationship network can then be queried to discover the relationships between terms within the set of data items.

Franks, Kasian (Kensington, CA); Myers, Cornelia A. (St. Louis, MO); Podowski, Raf M. (Pleasant Hill, CA)

2011-07-26T23:59:59.000Z

72

Securing a Wireless Networked Control System Using Information Fusion  

Science Conference Proceedings (OSTI)

Security of a wireless sensor network practically governs its usability in several applications. Especially, in applications like Industrial control systems which use NCS and SCADA systems, the security affects the stability of the system. We propose ...

Brijesh Kashyap Chejerla, Sanjay Madria

2012-10-01T23:59:59.000Z

73

Debugging complex software systems by means of pathfinder networks  

Science Conference Proceedings (OSTI)

This paper introduces a new methodology based on the use of Pathfinder networks (PFNETs) for the debugging of multi-agent systems (MASs). This methodology is specifically designed to develop a forensic analysis (i.e. a debugging process performed on ... Keywords: Complex systems, Debugging, Forensic analysis, Multi-agent systems, Pathfinder networks

Emilio Serrano; Arnaud Quirin; Juan Botia; Oscar Cordn

2010-03-01T23:59:59.000Z

74

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

75

A performance data network for solar process heat systems  

DOE Green Energy (OSTI)

A solar process heat (SPH) data network has been developed to access remote-site performance data from operational solar heat systems. Each SPH system in the data network is outfitted with monitoring equipment and a datalogger. The datalogger is accessed via modem from the data network computer at the National Renewable Energy Laboratory (NREL). The dataloggers collect both ten-minute and hourly data and download it to the data network every 24-hours for archiving, processing, and plotting. The system data collected includes energy delivered (fluid temperatures and flow rates) and site meteorological conditions, such as solar insolation and ambient temperature. The SPH performance data network was created for collecting performance data from SPH systems that are serving in industrial applications or from systems using technologies that show promise for industrial applications. The network will be used to identify areas of SPH technology needing further development, to correlate computer models with actual performance, and to improve the credibility of SPH technology. The SPH data network also provides a centralized bank of user-friendly performance data that will give prospective SPH users an indication of how actual systems perform. There are currently three systems being monitored and archived under the SPH data network: two are parabolic trough systems and the third is a flat-plate system. The two trough systems both heat water for prisons; the hot water is used for personal hygiene, kitchen operations, and laundry. The flat plate system heats water for meat processing at a slaughter house. We plan to connect another parabolic trough system to the network during the first months of 1996. We continue to look for good examples of systems using other types of collector technologies and systems serving new applications (such as absorption chilling) to include in the SPH performance data network.

Barker, G.; Hale, M.J.

1996-03-01T23:59:59.000Z

76

Neural Network Based Intelligent Sootblowing System  

SciTech Connect

Cost effective generation of electricity is vital to the economic growth and stability of this nation. To accomplish this goal a balanced portfolio of fuel sources must be maintained and established which not only addresses the cost of conversion of these energy sources to electricity, but also does so in an efficient and environmentally sound manner. Conversion of coal as an energy source to produce steam for a variety of systems has been a cornerstone of modern industry. However, the use of coal in combustion systems has traditionally produced unacceptable levels of gaseous and particulate emissions, albeit that recent combustion, removal and mitigation techniques have drastically reduced these levels. With the combustion of coal there is always the formation and deposition of ash and slag within the boilers. This adversely affects the rate at which heat is transferred to the working fluid, which in the case of electric generators is water/steam. The fouling of the boiler leads to poor efficiencies due to the fact that heat which could normally be transferred to the working fluid remains in the flue gas stream and exits to the environment without beneficial use. This loss in efficiency translates to higher consumption of fuel for equivalent levels of electric generation; hence more gaseous emissions are also produced. Another less obvious problem exists with fouling of various sections of the boiler creating intense peak temperatures within and around the combustion zone. Total nitrogen oxides (NOx) generation is primarily a function of both ''fuel'' and ''thermal'' NOx production. Fuel NOx which generally comprises 20%-40% of the total NOx generated is predominantly influenced by the levels of oxygen present, while thermal NOx which comprises the balance is a function of temperature. As the fouling of the boiler increases and the rate of heat transfer decreases, peak temperatures increase as does the thermal NOx production. Due to the composition of coal, particulate matter is also a by-product of coal combustion. Modern day utility boilers are usually fitted with electrostatic precipitators to aid in the collection of particulate matter. Although extremely efficient, these devices are sensitive to rapid changes in inlet mass concentration as well as total mass loading. Traditionally, utility boilers are equipped with devices known as sootblowers, which use, steam, water or air to dislodge and clean the surfaces within the boiler and are operated based upon established rule or operator's judgment. Poor sootblowing regimes can influence particulate mass loading to the electrostatic precipitators. The project applied a neural network intelligent sootblowing system in conjunction with state-of-the-art controls and instruments to optimize the operation of a utility boiler and systematically control boiler slagging/fouling. This optimization process targeted reduction of NOx of 30%, improved efficiency of 2% and a reduction in opacity of 5%. The neural network system proved to be a non-invasive system which can readily be adapted to virtually any utility boiler. Specific conclusions from this neural network application are listed below. These conclusions should be used in conjunction with the specific details provided in the technical discussions of this report to develop a thorough understanding of the process.

Mark Rhode

2005-04-01T23:59:59.000Z

77

Neural Network Based Intelligent Sootblowing System  

SciTech Connect

Cost effective generation of electricity is vital to the economic growth and stability of this nation. To accomplish this goal a balanced portfolio of fuel sources must be maintained and established which not only addresses the cost of conversion of these energy sources to electricity, but also does so in an efficient and environmentally sound manner. Conversion of coal as an energy source to produce steam for a variety of systems has been a cornerstone of modern industry. However, the use of coal in combustion systems has traditionally produced unacceptable levels of gaseous and particulate emissions, albeit that recent combustion, removal and mitigation techniques have drastically reduced these levels. With the combustion of coal there is always the formation and deposition of ash and slag within the boilers. This adversely affects the rate at which heat is transferred to the working fluid, which in the case of electric generators is water/steam. The fouling of the boiler leads to poor efficiencies due to the fact that heat which could normally be transferred to the working fluid remains in the flue gas stream and exits to the environment without beneficial use. This loss in efficiency translates to higher consumption of fuel for equivalent levels of electric generation; hence more gaseous emissions are also produced. Another less obvious problem exists with fouling of various sections of the boiler creating intense peak temperatures within and around the combustion zone. Total nitrogen oxides (NOx) generation is primarily a function of both ''fuel'' and ''thermal'' NOx production. Fuel NOx which generally comprises 20%-40% of the total NOx generated is predominantly influenced by the levels of oxygen present, while thermal NOx which comprises the balance is a function of temperature. As the fouling of the boiler increases and the rate of heat transfer decreases, peak temperatures increase as does the thermal NOx production. Due to the composition of coal, particulate matter is also a by-product of coal combustion. Modern day utility boilers are usually fitted with electrostatic precipitators to aid in the collection of particulate matter. Although extremely efficient, these devices are sensitive to rapid changes in inlet mass concentration as well as total mass loading. Traditionally, utility boilers are equipped with devices known as sootblowers, which use, steam, water or air to dislodge and clean the surfaces within the boiler and are operated based upon established rule or operator's judgment. Poor sootblowing regimes can influence particulate mass loading to the electrostatic precipitators. The project applied a neural network intelligent sootblowing system in conjunction with state-of-the-art controls and instruments to optimize the operation of a utility boiler and systematically control boiler slagging/fouling. This optimization process targeted reduction of NOx of 30%, improved efficiency of 2% and a reduction in opacity of 5%. The neural network system proved to be a non-invasive system which can readily be adapted to virtually any utility boiler. Specific conclusions from this neural network application are listed below. These conclusions should be used in conjunction with the specific details provided in the technical discussions of this report to develop a thorough understanding of the process.

Mark Rhode

2005-04-01T23:59:59.000Z

78

A privilege management system for a secure network  

Science Conference Proceedings (OSTI)

Modern research projects may involve dozens of geographically distributed collaborators who access distributed information, applications workstations and devices. We are developing an architecture and methods for distributed, decentralized privilege ... Keywords: CEBAF, Chinese Institute of High Energy Physics, Continuous Electron Beam Accelerator Facility, DICCE project, Distributed Informatics Computing and Collaborative Environments project, ESnet, Internet, Old Dominion University, US Department of Energy's Energy Science Network, World Wide Web based interfaces, X-windows, authentication, authorisation, authorization, computer network management, design, distributed computing environment networks, distributed information, implementation, network interfaces, privilege management system, secure network

K. J. Maly; A. Gupta; B. Kvande; I. B. Levinstein; R. Mukkamala; M. Olson; R. Whitney; R. Chambers

1996-06-01T23:59:59.000Z

79

Energy supply network design optimization for distributed energy systems  

Science Conference Proceedings (OSTI)

Based on the fluctuations in power and heat demand of the consumers in a region, this paper presents a bi-level programming model for the regional DES (distributed energy system) network planning. The model aims to minimize the total cost of the regional ... Keywords: Bi-level programming, Distributed energy system, Energy supply network, Hybrid algorithm

Ming Dong; Fenglan He; Hairui Wei

2012-11-01T23:59:59.000Z

80

Intrusion detection in sensor networks using clustering and immune systems  

Science Conference Proceedings (OSTI)

Security of sensor networks is a complicated task, mostly due to the limited resources of sensor units. Encryption and authentication are useless if an attacker has entered the system. Thus, a second line of defense known as Intrusion Detection must ... Keywords: genetic algorithms, immune systems, intrusion detection, self-organizing maps, wireless sensor networks

Zorana Bankovi?; Jos M. Moya; lvaro Araujo; Juan-Mariano De Goyeneche

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

A secure monitoring and control system for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

The maintenance of Wireless Sensor Networks (WSNs) can carry high or prohibitive costs, particularly, if the WSN is deployed in unattended areas. Secure monitoring and control of the WSN is vital, however, practical systems are rare and limited with ... Keywords: Monitoring,Wireless sensor networks,Control systems,Intrusion detection,Elliptic curve cryptography

Michael Riecker, Rainer Thome, Dingwen Yuan, Matthias Hollick

2012-10-01T23:59:59.000Z

82

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

83

Wide area network monitoring system for HEP experiments at Fermilab  

SciTech Connect

Large, distributed High Energy Physics (HEP) collaborations, such as D0, CDF and US-CMS, depend on stable and robust network paths between major world research centers. The evolving emphasis on data and compute Grids increases the reliance on network performance. Fermilab's experimental groups and network support personnel identified a critical need for WAN monitoring to ensure the quality and efficient utilization of such network paths. This has led to the development of the Network Monitoring system we will present in this paper. The system evolved from the IEPM-BW project, started at SLAC three years ago. At Fermilab this system has developed into a fully functional infrastructure with bi-directional active network probes and path characterizations. It is based on the Iperf achievable throughput tool, Ping and Synack to test ICMP/TCP connectivity. It uses Pipechar and Traceroute to test, compare and report hop-by-hop network path characterization. It also measures real file transfer performance by BBFTP and GridFTP. The Monitoring system has an extensive web-interface and all the data is available through standalone SOAP web services or by a MonaLISA client. Also in this paper we will present a case study of network path asymmetry and abnormal performance between FNAL and SDSC, which was discovered and resolved by utilizing the Network Monitoring system.

Grigoriev, Maxim; /Fermilab; Cottrell, Les; Logg, Connie; /SLAC

2004-12-01T23:59:59.000Z

84

Wireless sensor network system for supporting nursing context-awareness  

Science Conference Proceedings (OSTI)

We developed a wireless sensor network system for supporting context-awareness of nursing activities in hospitals. Our system is aimed at automated recording of nursing work, providing context-aware services to nurses and visualising analytical results ...

Futoshi Naya; Ren Ohmura; Masakazu Miyamae; Haruo Noma; Kiyoshi Kogure; Michita Imai

2011-11-01T23:59:59.000Z

85

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

DOE Green Energy (OSTI)

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

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

2009-12-01T23:59:59.000Z

86

Towards network containment in malware analysis systems  

Science Conference Proceedings (OSTI)

This paper focuses on the containment and control of the network interaction generated by malware samples in dynamic analysis environments. A currently unsolved problem consists in the existing dependency between the execution of a malware sample and ... Keywords: malware containment, network traffic replay, protocol learning

Mariano Graziano; Corrado Leita; Davide Balzarotti

2012-12-01T23:59:59.000Z

87

Feedforward neural network and adaptive network-based fuzzy inference system in study of power lines  

Science Conference Proceedings (OSTI)

Over the past several decades, concerns have been raised over the possibility that the exposure to extremely low frequency electromagnetic fields from power lines may have harmful effects on human and living organisms. This paper presents novel approach ... Keywords: Adaptive network-based fuzzy inference systems, Electromagnetic fields, Feedforward neural network, Power lines

Jasna Radulovi?; Vesna Rankovi?

2010-01-01T23:59:59.000Z

88

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

89

Market Power in Ethanol Transport Jonathan E. Hughes  

E-Print Network (OSTI)

. (2008) · Low sulfur coal, Busse and Keohane (forthcoming) GIS MAP OF U.S. RAILROAD NETWORK MOTIVATION, ethanol is used voluntarily in "economic blending" when the (subsidized) price of ethanol is lower than

California at Davis, University of

90

Towards Modeling Interconnection Networks of Exascale Systems with OMNet++  

Science Conference Proceedings (OSTI)

One of the objectives of the decade for High-Performance Computing systems is to reach the exascale level of computing power before 2018, hence this will require strong efforts in their design. In that sense, High-speed low-latency interconnection networks ... Keywords: HPC interconnection networks, Performance evaluation, Simulation tools, OMNeT++

Pedro Yebenes, Jesus Escudero-Sahuquillo, Pedro J. Garcia, Francisco J. Quiles

2013-02-01T23:59:59.000Z

91

Simulation of mobile networks using discrete event system specification theory  

Science Conference Proceedings (OSTI)

The fourth generation (4G) of mobile telecommunication technology provides ultra-band internet access for mobile devices such as smartphones, tablets, and laptops. One of the challenges in the Long Term Evolution (LTE) 4G networks is the low data rate ... Keywords: DEVS, discrete event system specification, mobile networks

Mohammad Moallemi, Gabriel Wainer, Shafagh Jafer, Gary Boudreau, Ronald Casselman

2013-04-01T23:59:59.000Z

92

Safety System Oversight Workshop (May 12-13, 2010) - Agenda  

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

Opening Remarks James Heffner, Facility Representative Program Manager Earl Hughes, Safety System Oversight Program Manager Office of Nuclear Safety Policy and Assistance Office...

93

A File Location, Replication, and Distribution System for Network Information to Aid Network Management  

E-Print Network (OSTI)

This thesis demonstrates and evaluates the design, architecture, and implementation of a file location, replication, and distribution system built with the objective of managing information in an Internet network. The ...

Cheng, Tiffany

2010-09-22T23:59:59.000Z

94

A file location, replication, and distribution system for network information to aid network management  

E-Print Network (OSTI)

This thesis demonstrates and evaluates the design, architecture, and implementation of a file location, replication, and distribution system built with the objective of managing information in an Internet network. The ...

Cheng, Tiffany (Tiffany R.)

2010-01-01T23:59:59.000Z

95

Modelling the convective flow in solar thermal receivers K.C. Yeh; G. Hughes & K. Lovegrove  

E-Print Network (OSTI)

Modelling the convective flow in solar thermal receivers K.C. Yeh; G. Hughes & K. Lovegrove density differences produced using the varying salt concentrations in a water tank. The flow to visualise #12;Modelling the Convective Flow in Solar Thermal Receivers Yeh the flow outside the cavity mouth

96

Social Recommender Systems Based on Coupling Network Structure Analysis  

E-Print Network (OSTI)

The past few years has witnessed the great success of recommender systems, which can significantly help users find relevant and interesting items for them in the information era. However, a vast class of researches in this area mainly focus on predicting missing links in bipartite user-item networks (represented as behavioral networks). Comparatively, the social impact, especially the network structure based properties, is relatively lack of study. In this paper, we firstly obtain five corresponding network-based features, including user activity, average neighbors' degree, clustering coefficient, assortative coefficient and discrimination, from social and behavioral networks, respectively. A hybrid algorithm is proposed to integrate those features from two respective networks. Subsequently, we employ a machine learning process to use those features to provide recommendation results in a binary classifier method. Experimental results on a real dataset, Flixster, suggest that the proposed method can significan...

Hu, Xiao; Chen, Xiaolong; Zhang, Zi-Ke

2012-01-01T23:59:59.000Z

97

Decision support systems and methods for complex networks  

DOE Patents (OSTI)

Methods and systems for automated decision support in analyzing operation data from a complex network. Embodiments of the present invention utilize these algorithms and techniques not only to characterize the past and present condition of a complex network, but also to predict future conditions to help operators anticipate deteriorating and/or problem situations. In particular, embodiments of the present invention characterize network conditions from operation data using a state estimator. Contingency scenarios can then be generated based on those network conditions. For at least a portion of all of the contingency scenarios, risk indices are determined that describe the potential impact of each of those scenarios. Contingency scenarios with risk indices are presented visually as graphical representations in the context of a visual representation of the complex network. Analysis of the historical risk indices based on the graphical representations can then provide trends that allow for prediction of future network conditions.

Huang, Zhenyu (Richland, WA); Wong, Pak Chung (Richland, WA); Ma, Jian (Richland, WA); Mackey, Patrick S (Richland, WA); Chen, Yousu (Richland, WA); Schneider, Kevin P (Seattle, WA)

2012-02-28T23:59:59.000Z

98

Projects To Develop Novel Monitoring Networks for Advanced Power Systems  

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

To Develop Novel Monitoring Networks for Advanced Power To Develop Novel Monitoring Networks for Advanced Power Systems Selected Projects To Develop Novel Monitoring Networks for Advanced Power Systems Selected September 1, 2010 - 1:00pm Addthis Washington, DC - Five projects that will develop technologically sophisticated monitoring networks for advanced fossil energy power systems have been selected for continued research by the U.S. Department of Energy (DOE). The projects will support efforts by the Office of Fossil Energy's (FE) Advanced Research--Coal Utilization Science (CUS) Program to study novel approaches in model development and validation; monitoring refractory health; and wireless, self-powered sensors for advanced, next-generation power systems. They will monitor the status of equipment, materials

99

Neural Network Control of Robot Manipulators and Nonlinear Systems  

Science Conference Proceedings (OSTI)

From the Publisher:This graduate text provides an authoritative account of neural network (NN) controllers for robotics and nonlinear systems and gives the first textbook treatment of a general and streamlined design procedure for NN controllers. Stability ...

F. L. Lewis; A. Yesildirak; Suresh Jagannathan

1998-09-01T23:59:59.000Z

100

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

Note: This page contains sample records for the topic "hughes network systems" 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

Networking through the new phone system: The future of telecommunications  

Science Conference Proceedings (OSTI)

The history of the telephone system is traced from 1850 to present, and the ''new'' telephone companies are described. The immediate problems of 56 KB data and 64 KB voice channels are discussed together with their proposed solution. The Integrated Digital System Network concept (IDSN) is described, and the proposals to build a true end-to-end digital telephone network are described. The Stanford University-Northern Telecom information test facility is described. The current and planned networks in the US and around the world have also been included.

Struven, W.

1986-12-01T23:59:59.000Z

102

Fuzzy neural network pattern recognition algorithm for classification of the events in power system networks  

E-Print Network (OSTI)

This dissertation introduces advanced artificial intelligence based algorithm for detecting and classifying faults on the power system transmission line. The proposed algorithm is aimed at substituting classical relays susceptible to possible performance deterioration during variable power system operating and fault conditions. The new concept relies on a principle of pattern recognition and detects the existence of the fault, identifies fault type, and estimates the transmission line faulted section. The approach utilizes self-organized, Adaptive Resonance Theory (ART) neural network, combined with fuzzy decision rule for interpretation of neural network outputs. Neural network learns the mapping between inputs and desired outputs through processing a set of example cases. Training of the neural network is based on the combined use of unsupervised and supervised learning methods. During training, a set of input events is transformed into a set of prototypes of typical input events. During application, real events are classified based on the interpretation of their matching to the prototypes through fuzzy decision rule. This study introduces several enhancements to the original version of the ART algorithm: suitable preprocessing of neural network inputs, improvement in the concept of supervised learning, fuzzyfication of neural network outputs, and utilization of on-line learning. A selected model of an actual power network is used to simulate extensive sets of scenarios covering a variety of power system operating conditions as well as fault and disturbance events. Simulation results show improved recognition capabilities compared to a previous version of ART neural network algorithm, Multilayer Perceptron (MLP) neural network algorithm, and impedance based distance relay. Simulation results also show exceptional robustness of the novel ART algorithm for all operating conditions and events studied, as well as superior classification capabilities compared to the other solutions. Consequently, it is demonstrated that the proposed ART solution may be used for accurate, high-speed distinction among faulted and unfaulted events, and estimation of fault type and fault section.

Vasilic, Slavko

2006-05-01T23:59:59.000Z

103

Thesis Title- Wireless Sensor Networking for Intelligent Transportation Systems  

E-Print Network (OSTI)

o My research area is Cyber-Physical Systems (CPS) that are computing systems interacting with physical, real environments. My research includes (i) CPS supporting the safe and efficient driving in transportation systems (e.g., road networks) in real life and (ii) CPS protecting and monitoring efficiently transportation systems (e.g., road networks and subways) and people (e.g., drivers, passengers, and pedestrians) in emergency situations (e.g., wars, accidents, and disasters). o I am leading CPS Laboratory at Sungkyunkwan University:

Advisor Prof; David H. C. Du; Prof Tian He; Advisor Prof; Yanghee Choi; Advisor Prof; Youngik Eom

2001-01-01T23:59:59.000Z

104

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

Science Conference Proceedings (OSTI)

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

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

2009-11-30T23:59:59.000Z

105

Context-Dependent Network Agents: EPRI/DoD Complex Interactive Networks/Systems Initiative: Second Annual Report  

Science Conference Proceedings (OSTI)

This report details the second-year research accomplishments for one of six research consortia established under the Complex Interactive Networks/Systems Initiative. This particular report presents progress on developing and demonstrating "context-dependent network agent" (CDNA) technology.

2001-06-21T23:59:59.000Z

106

A Learning System for Discriminating Variants of Malicious Network Traffic  

Science Conference Proceedings (OSTI)

Modern computer network defense systems rely primarily on signature-based intrusion detection tools, which generate alerts when patterns that are pre-determined to be malicious are encountered in network data streams. Signatures are created reactively, and only after in-depth manual analysis of a network intrusion. There is little ability for signature-based detectors to identify intrusions that are new or even variants of an existing attack, and little ability to adapt the detectors to the patterns unique to a network environment. Due to these limitations, the need exists for network intrusion detection techniques that can more comprehensively address both known unknown networkbased attacks and can be optimized for the target environment. This work describes a system that leverages machine learning to provide a network intrusion detection capability that analyzes behaviors in channels of communication between individual computers. Using examples of malicious and non-malicious traffic in the target environment, the system can be trained to discriminate between traffic types. The machine learning provides insight that would be difficult for a human to explicitly code as a signature because it evaluates many interdependent metrics simultaneously. With this approach, zero day detection is possible by focusing on similarity to known traffic types rather than mining for specific bit patterns or conditions. This also reduces the burden on organizations to account for all possible attack variant combinations through signatures. The approach is presented along with results from a third-party evaluation of its performance.

Beaver, Justin M [ORNL; Symons, Christopher T [ORNL; Gillen, Rob [ORNL

2013-01-01T23:59:59.000Z

107

Research on a Heat-supply Network Dispatching System Based on Geographical Information System (GIS)  

E-Print Network (OSTI)

In order to reduce heating systematic operation and maintenance expenses, aimed at the current standards of a heat-supply network based on GIS, combine with a national program of 'tenth-five-year-plan', the authors have developed a Heat-supply Network Dispatching System (HNDS). The system, based on Oracle database and Mapgis 6.5, compiles with Visual C++ software. With computer and communication techniques, the system dynamic inspects parameters and information of a heat-supply network, achieves real-time dispatching and automatic information management. Based on a relief map, the system combines data on inspection equipment with those of the heat-supply network, intuitively displays the state of inspected equipment and the heat-supply network. Using the models of forecast and analysis, the system is reasonably configured for each heat supply dispatch system. Results applied to demonstration projects prove that the system possesses characteristics of stability and security.

Zhou, Z.; Zou, P.; Tang, H.; Fang, X.; Wang, W.

2006-01-01T23:59:59.000Z

108

Minimizing Failures While Maintaining Efficiency of Complex Interactive Networks and Systems: EPRI/DoD Complex Interactive Networks/ Systems Initiative; First Annual Report  

Science Conference Proceedings (OSTI)

This is the first annual report from the EPRI/DOD Complex Interactive Networks/Systems Initiative. The report describes research progress in minimizing failures while maintaining efficiency of complex interactive networks and systems.

2000-05-26T23:59:59.000Z

109

A Survey of Recent Results in Networked Control Systems  

E-Print Network (OSTI)

INVITED P A P E R A Survey of Recent Results in Networked Control Systems When sensors recent results on estimation, analysis, and controller synthesis for NCSs. The results surveyed address over the Internet [17], [19], [59], and automated highway systems and unmanned aerial vehicles [57

Schenato, Luca

110

Data System Sciences & Engineering Group - Sensor Networks  

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

asset visibility and tracking for an intelligence agency sponsor. Projects Atmospheric Radiation Measurement Program Knowledge Management & Analysis System RFID Accountability...

111

Design and implementation of P2P multimedia system on Taiwan Advance Research and Education Network  

Science Conference Proceedings (OSTI)

This study designs and implements a cross-platform, cross-domain P2P multimedia sharing system in the Taiwan Advance Research and Education Network. The system allows users to easily access the multimedia resources of the entire network from any network ... Keywords: OSGi, P2P network, multimedia system

Sung-Yen Chang; Chin-Feng Lai; Yueh-Min Huang; Te-Lung Liu; Jen-Wei Hu; Chia-Cheng Hu

2010-06-01T23:59:59.000Z

112

Optimal Network Reconfiguration for Electric Distribution Systems  

Science Conference Proceedings (OSTI)

Utility distribution systems are at the center of the smart grid revolution and, at the same time, are challenged by an aging infrastructure, legacy systems that must be integrated with new technologies, changing load characteristics (such as electric vehicles), and the requirement for integration of widespread distributed resources. Given these challenges, electricity distribution companies are under pressure to improve reliability and system performance, build the necessary infrastructure for integrati...

2012-01-31T23:59:59.000Z

113

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

security efforts by establishing the national SCADA test bed program INL [INL/EXT- 05-00671, Idaho National Laboratory. US-CERT [2008], Control Systems Security

Amin, Saurabh

2011-01-01T23:59:59.000Z

114

Mitigations for Security Vulnerabilities Found in Control System Networks |  

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

Mitigations for Security Vulnerabilities Found in Control System Mitigations for Security Vulnerabilities Found in Control System Networks Mitigations for Security Vulnerabilities Found in Control System Networks Industry is aware of the need for Control System (CS) security, but in on-site assessments, Idaho National Laboratory (INL) has observed that security procedures and devices are not consistently and effectively implemented. The Department of Homeland Security (DHS), National Cyber Security Division (NCSD), established the Control Systems Security Center (CSSC) at INL to help industry and government improve the security of the CSs used in the nation's critical infrastructures. One of the main CSSC objectives is to identify control system vulnerabilities and develop effective mitigations for them. This paper discusses common problems and vulnerabilities seen in

115

STATEMENT OF CONSIDERATIONS REQUEST BY BAKER HUGHES INTEQ FOR...  

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

effective Coiled Tubing Drilling (CTD) system that allows operators to produce existing oil reservoirs, mainly on the North American continent, in a much more effective way than...

116

CCHP System with Interconnecting Cooling and Heating Network  

E-Print Network (OSTI)

The consistency between building heating load, cooling load and power load are analyzed in this paper. The problem of energy waste and low equipment usage in a traditional CCHP (combined cooling, heating and power) system with generated electricity not supplied to the grid is analyzed in detail. Further, the new concept of CCHP system with cooling and heating network interconnecting is developed. Then, the Olympic Park energy system is presented to illustrate the advantage and improvement both in economy performance and energy efficiency.

Fu, L.; Geng, K.; Zheng, Z.; Jiang, Y.

2006-01-01T23:59:59.000Z

117

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...

118

Console Networks for Major Computer Systems  

SciTech Connect

A concept for interactive time-sharing of a major computer system is developed in which satellite computers mediate between the central computing complex and the various individual user terminals. These techniques allow the development of a satellite system substantially independent of the details of the central computer and its operating system. Although the user terminals' roles may be rich and varied, the demands on the central facility are merely those of a tape drive or similar batched information transfer device. The particular system under development provides service for eleven visual display and communication consoles, sixteen general purpose, low rate data sources, and up to thirty-one typewriters. Each visual display provides a flicker-free image of up to 4000 alphanumeric characters or tens of thousands of points by employing a swept raster picture generating technique directly compatible with that of commercial television. Users communicate either by typewriter or a manually positioned light pointer.

Ophir, D; Shepherd, B; Spinrad, R J; Stonehill, D

1966-07-22T23:59:59.000Z

119

Sensor network based vehicle classification and license plate identification system  

Science Conference Proceedings (OSTI)

Typically, for energy efficiency and scalability purposes, sensor networks have been used in the context of environmental and traffic monitoring applications in which operations at the sensor level are not computationally intensive. But increasingly, sensor network applications require data and compute intensive sensors such video cameras and microphones. In this paper, we describe the design and implementation of two such systems: a vehicle classifier based on acoustic signals and a license plate identification system using a camera. The systems are implemented in an energy-efficient manner to the extent possible using commercially available hardware, the Mica motes and the Stargate platform. Our experience in designing these systems leads us to consider an alternate more flexible, modular, low-power mote architecture that uses a combination of FPGAs, specialized embedded processing units and sensor data acquisition systems.

Frigo, Janette Rose [Los Alamos National Laboratory; Brennan, Sean M [Los Alamos National Laboratory; Rosten, Edward J [Los Alamos National Laboratory; Raby, Eric Y [Los Alamos National Laboratory; Kulathumani, Vinod K [WEST VIRGINIA UNIV.

2009-01-01T23:59:59.000Z

120

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

Note: This page contains sample records for the topic "hughes network systems" 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

Rational Positive Systems for Reaction Networks Jan H. van Schuppen  

E-Print Network (OSTI)

of certain chemical networks and applications to the kinetic proofreading model of T-cell receptor signal can be as high as 15.000 (about half the number of estimated genomes) and the number of chemical. These systems are called positive because the state vector represents masses or concentrations of chemical

van Schuppen, Jan H.

122

Towards a secure Frequency Monitoring NETwork (FNET) system  

Science Conference Proceedings (OSTI)

Reactive and real-time wide area monitoring systems (WAMS), such as the Frequency Monitoring NETwork (FNET) developed at Virginia Tech, allow for the gathering of frequency data throughout the entire power grid. FNET uses the Internet as a communication ... Keywords: FNET, Smart Grid, cyber security

Joseph L. McDaniel; Ambareen Siraj

2010-04-01T23:59:59.000Z

123

Discovery of extreme events-related communities in contrasting groups of physical system networks  

Science Conference Proceedings (OSTI)

The latent behavior of a physical system that can exhibit extreme events such as hurricanes or rainfalls, is complex. Recently, a very promising means for studying complex systems has emerged through the concept of complex networks. Networks representing ... Keywords: Community detection, Comparative analysis, Complex network analysis, Extreme event prediction, Network motif detection, Spatio-temporal data mining

Zhengzhang Chen; William Hendrix; Hang Guan; Isaac K. Tetteh; Alok Choudhary; Fredrick Semazzi; Nagiza F. Samatova

2013-09-01T23:59:59.000Z

124

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

125

Implementing Multi-Vendor Home Network System with Vendor-Neutral Services and Dynamic Service Binding  

Science Conference Proceedings (OSTI)

The home network system (HNS) consists of networked household appliances, intended to provide value-added services. The conventional HNS has been built on the single-vendor system, which severely limits potential of the HNS. To overcome the problem, ...

Masahide Nakamura; Yusuke Fukuoka; Hiroshi Igaki; Ken-ichi Matsumoto

2008-07-01T23:59:59.000Z

126

Quasi-parallel network applications in real-time distribution management system  

Science Conference Proceedings (OSTI)

In modern distribution management systems (DMSs), the real-time calculation of the network's state plays an important role for the operation of the network. High sophisticated algorithms for the estimation and calculation of the system's ...

Izudin Dzafic; Hans-Theo Neisius

2012-03-01T23:59:59.000Z

127

New No-Cost ANTFARM Tool Maps Control System Networks to Help...  

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

No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security Standards New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security...

128

Bayesian Network Inference with Qualitative Expert Knowledge for Decision Support Systems  

Science Conference Proceedings (OSTI)

In this paper, we consider a methodology that utilizes qualitative expert knowledge for inference in a Bayesian network. The decision-making assumptions and the mathematical equation for Bayesian inference are derived based on data and knowledge obtained ... Keywords: Bayesian network, Bayesian network inference, decision-support systems, qualitative expert knowledge, probability inequality constraints Bayesian network, Bayesian network inference, decision-support systems, qualitative expert knowledge, probability inequ

Nipat Jongsawat; Wichian Premchaiswadi

2010-06-01T23:59:59.000Z

129

An improved system and method for networking electrochemical devices  

DOE Patents (OSTI)

An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices are disclosed, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. Improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

Williams, M.C.; Wimer, J.G.; Archer, D.H.

1993-12-31T23:59:59.000Z

130

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

131

Neural network predictive control of UPFC for improving transient stability performance of power system  

Science Conference Proceedings (OSTI)

This paper presents a neural network predictive controller for the UPFC to improve the transient stability performance of the power system. A neural network model for the power system is trained using the backpropagation learning method employing the ... Keywords: Identification, Neural networks, Power system transient stability, Predictive control, Unified power flow controller (UPFC)

Sheela Tiwari; Ram Naresh; R. Jha

2011-12-01T23:59:59.000Z

132

The geological disasters defense expert system of the massive pipeline network SCADA system based on FNN  

Science Conference Proceedings (OSTI)

The SCADA system plays an important role in monitoring the long distance operation of mass pipeline network, which may experience huge damage due to landslides geological hazards. It is critical to detect the deformation and displacement of rock to forecast ... Keywords: FNN, SCADA system, TDR, expert system, geologic hazard

Xiedong Cao; Cundang Wei; Jie Li; Li Yang; Dan Zhang; Gang Tang

2012-04-01T23:59:59.000Z

133

Evolutionary programming versus artificial immune system in evolving neural network for grid-connected photovoltaic system output prediction  

Science Conference Proceedings (OSTI)

This paper presents the evolutionary neural networks for the prediction of energy output from a grid-connected photovoltaic (GCPV) system. Two evolutionary neural network (ENN) models have been proposed using evolutionary programming and artificial immune ... Keywords: artificial immune system (AIS) and prediction, artificial neural network (ANN), correlation coefficient (R), evolutionary programming (EP), grid-connected photovoltaic system (GCPV), multi-layer feedforward neural network (MLFNN), photovoltaic (PV)

Shahril Irwan Sulaiman; Titik Khawa Abdul Rahman; Ismail Musirin; Sulaiman Shaari

2011-06-01T23:59:59.000Z

134

Localized Pipeline Encroachment Detector System Using Sensor Network  

E-Print Network (OSTI)

Detection of encroachment on pipeline right-of-way is important for pipeline safety. An effective system can provide on-time warning while reducing the probability of false alarms. There are a number of industry and academic developments to tackle this problem. This thesis is the first to study the use of a wireless sensor network for pipeline right-of-way encroachment detection. In the proposed method, each sensor node in the network is responsible for detecting and transmitting vibration signals caused by encroachment activities to a base station (computer center). The base station monitors and analyzes the signals. If an encroachment activity is detected, the base station will send a warning signal. We describe such a platform with hardware configuration and software controls, and the results demonstrate that the platform is able to report our preliminary experiments in detecting digging activities by a tiller in the natural and automotive noise.

Ou, Xiaoxi 1986-

2011-08-01T23:59:59.000Z

135

High-speed and high-fidelity system and method for collecting network traffic  

DOE Patents (OSTI)

A system is provided for the high-speed and high-fidelity collection of network traffic. The system can collect traffic at gigabit-per-second (Gbps) speeds, scale to terabit-per-second (Tbps) speeds, and support additional functions such as real-time network intrusion detection. The present system uses a dedicated operating system for traffic collection to maximize efficiency, scalability, and performance. A scalable infrastructure and apparatus for the present system is provided by splitting the work performed on one host onto multiple hosts. The present system simultaneously addresses the issues of scalability, performance, cost, and adaptability with respect to network monitoring, collection, and other network tasks. In addition to high-speed and high-fidelity network collection, the present system provides a flexible infrastructure to perform virtually any function at high speeds such as real-time network intrusion detection and wide-area network emulation for research purposes.

Weigle, Eric H. (Los Alamos, NM)

2010-08-24T23:59:59.000Z

136

Data collection system design in SSM networks with unicast feedback: server message definition  

Science Conference Proceedings (OSTI)

The system for mass data collection with cumulative acknowledge is described in this paper. A server message for cumulative acknowledgement is specified. The system is development for single source multicast networks. These networks are characterized ... Keywords: RTCP, RTP, SSM and ASM networks, data collection, unicast feedback

Martin Koutny; Pavel Silhavy; Jiri Hosek

2009-02-01T23:59:59.000Z

137

An application of formal argumentation: Fusing Bayesian networks in multi-agent systems  

Science Conference Proceedings (OSTI)

We consider a multi-agent system where each agent is equipped with a Bayesian network, and present an open framework for the agents to agree on a possible consensus network. The framework builds on formal argumentation, and unlike previous solutions ... Keywords: Application, Argument in agent systems, Argumentation frameworks, Bayesian networks

Sren Holbech Nielsen; Simon Parsons

2007-07-01T23:59:59.000Z

138

A model of a trust-based recommendation system on a social network  

Science Conference Proceedings (OSTI)

In this paper, we present a model of a trust-based recommendation system on a social network. The idea of the model is that agents use their social network to reach information and their trust relationships to filter it. We investigate how the dynamics ... Keywords: Recommender system, Social network, Trust

Frank Edward Walter; Stefano Battiston; Frank Schweitzer

2008-02-01T23:59:59.000Z

139

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

140

Improved Network Consistency and Connectivity in Mobile and Sensor Systems.  

E-Print Network (OSTI)

??Edge networks such as sensor, mobile, and disruption tolerant networks suffer from topological uncertainty and disconnections due to myriad of factors including limited battery capacity (more)

Banerjee, Nilanjan

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Exploiting heterogeneous multicore-processor systems for high-performance network processing  

Science Conference Proceedings (OSTI)

In this paper, we examine two network-processing appliances, i.e., the IBM Proventia Network Intrusion Prevention System and the IBM WebSphere DataPower service-oriented architecture appliance, and the ...

H. Franke; T. Nelms; H. Yu; H. D. Achilles; R. Salz

2010-01-01T23:59:59.000Z

142

Decision support system for water distribution systems based on neural networks and graphs theory for leakage detection  

Science Conference Proceedings (OSTI)

This paper presents an efficient and effective decision support system (DSS) for operational monitoring and control of water distribution systems based on a three layer General Fuzzy Min-Max Neural Network (GFMMNN) and graph theory. The operational monitoring ... Keywords: Decision support system, Graph theory, Loop corrective flows equations, Modeling and simulation, Neural network, Operational control of water distribution systems

Corneliu T. C. Arsene; Bogdan Gabrys; David Al-Dabass

2012-12-01T23:59:59.000Z

143

Network flow model for multi-energy systems  

Science Conference Proceedings (OSTI)

This paper describes a novel approach to model networks with multiple energy carrier. The proposed nodal matrix establishes a link between an optimization of enclosed areas and their interconnections via networks. In the envisioned network flow model ... Keywords: energy conversion, energy hubs, grids, line losses, network flow, optimal power flow

Matthias Schulze; Goran Gaparovi?

2010-02-01T23:59:59.000Z

144

Proposal of service management system for multimedia network environment  

Science Conference Proceedings (OSTI)

In a multimedia network environment, the network connection is required to support real-time data transmission and flexible architecture. IEEE 1394, a high performance serial bus that guarantees real-time streaming and supports Plug & Play, would be ... Keywords: IEEE 1394, multimedia network, network configuration, plug & play, service discovery

Atsunobu Takagi; Takahiro Koita; Kenya Sato

2007-03-01T23:59:59.000Z

145

Design and Implementation of a Multi-purpose Cluster System Network Interface Unit  

E-Print Network (OSTI)

Design and Implementation of a Multi-purpose Cluster System Network Interface Unit by Boon Seong of a Multi-purpose Cluster System Network Interface Unit by Boon Seong Ang Submitted to the Department. These shortcomings unnecessarily constrain the performance of cluster systems. Our thesis is that a cluster system

146

A Stochastic Calculus for Network Systems with Renewable Energy Sources  

E-Print Network (OSTI)

We consider the performance modeling and evaluation of network systems powered with renewable energy sources such as solar and wind energy. Such energy sources largely depend on environmental conditions, which are hard to predict accurately. As such, it may only make sense to require the network systems to support a soft quality of service (QoS) guarantee, i.e., to guarantee a service requirement with a certain high probability. In this paper, we intend to build a solid mathematical foundation to help better understand the stochastic energy constraint and the inherent correlation between QoS and the uncertain energy supply. We utilize a calculus approach to model the cumulative amount of charged energy and the cumulative amount of consumed energy. We derive upper and lower bounds on the remaining energy level based on a stochastic energy charging rate and a stochastic energy discharging rate. By building the bridge between energy consumption and task execution (i.e., service), we study the QoS guarantee under...

Wu, Kui; Marinakis, Dimitri

2011-01-01T23:59:59.000Z

147

Preliminary systems engineering evaluations for the National Ecological Observatory Network.  

Science Conference Proceedings (OSTI)

The National Ecological Observatory Network (NEON) is an ambitious National Science Foundation sponsored project intended to accumulate and disseminate ecologically informative sensor data from sites among 20 distinct biomes found within the United States and Puerto Rico over a period of at least 30 years. These data are expected to provide valuable insights into the ecological impacts of climate change, land-use change, and invasive species in these various biomes, and thereby provide a scientific foundation for the decisions of future national, regional, and local policy makers. NEON's objectives are of substantial national and international importance, yet they must be achieved with limited resources. Sandia National Laboratories was therefore contracted to examine four areas of significant systems engineering concern; specifically, alternatives to commercial electrical utility power for remote operations, approaches to data acquisition and local data handling, protocols for secure long-distance data transmission, and processes and procedures for the introduction of new instruments and continuous improvement of the sensor network. The results of these preliminary systems engineering evaluations are presented, with a series of recommendations intended to optimize the efficiency and probability of long-term success for the NEON enterprise.

Robertson, Perry J.; Kottenstette, Richard Joseph; Crouch, Shannon M.; Brocato, Robert Wesley; Zak, Bernard Daniel; Osborn, Thor D.; Ivey, Mark D.; Gass, Karl Leslie; Heller, Edwin J.; Dishman, James Larry; Schubert, William Kent; Zirzow, Jeffrey A.

2008-11-01T23:59:59.000Z

148

The 4x6 network; Distribution system applications  

Science Conference Proceedings (OSTI)

An earlier paper described the 4x6 network switching scheme for power delivery systems with emphasis on substations. It was shown that the 4x6 scheme requires up to 40% fewer breakers than traditional switching schemes, and is inherently more reliable. The emphasis here is on distribution system applications. It is shown that transformer nameplate capacity can be reduced up to 33% using the 4x6 switching scheme, with equal or greater reliability. Through judicious use of open circuit breakers or other methods inherent to the 4x6 concept, short-circuit levels and ampacity requirements are reduced for further economy. Also 4x6 facilitates modular construction for distribution substations, permitting use of standardized factory assembled packages of transformers and switchgear for maximum economy.

Page, R.; Nishikawara, K.; Stromotich, F. (Substation Planning Associates, West Vancouver, BC (GB))

1990-01-01T23:59:59.000Z

149

Investigation of network-based information system model  

SciTech Connect

The objective of the DOE-LBNL summer student research program in computer and information sciences focused on investigating database- based http-based information architectures, and implementation of a prototype using DOE`s Comprehensive Epidemiologic Data Resource (CEDR) metadata or Epidemiology Guide content. We were successful in identifying the components of such an information system, and appropriate configuration given the requirements, and in implementing a prototype. This work comprised investigation of various information systems architectures or variants, evaluation and selection of various tools, products, and packages, preparation of databases, database content, output formats, and graphical (World Wide Web- compatible) interfaces. We successfully prepared and demonstrated network access to content from both the CEDR structured documentation and from the DOD Epidemiology Guides (site archive records).

Konrad, A.M.; Perez, M.; Rivera, J.; Rodriguez, Y.; Durst, M.J.; Merrill, D.W.; Holmes, H.H.

1996-09-01T23:59:59.000Z

150

Application of Neural Network approach for Proton Exchange Membrane fuel cell systems  

Science Conference Proceedings (OSTI)

Artificial Intelligence (AI) techniques, particularly the Neural Networks (NNs), are recently having significant impact on power electronics. In a Proton Exchange Membrane (PEM) fuel cell system, there is a strong relationship between the available ... Keywords: NNC, PEM fuel cells, dynamic modelling, neural network controllers, neural networks, output variables, performance modelling, power electronics, proton exchange membrane

Mustapha Hatti; Mustapha Tioursi

2009-01-01T23:59:59.000Z

151

An Interested-based Architecture for Peer-to-Peer Network Systems  

Science Conference Proceedings (OSTI)

Improving search performance is an important issue in peer-to-peer (P2P) network systems. Although Distributed Hash Tables (DHTs) route queries more efficiently than flooding does, it's complicated for DHTs to support keyword-based searches. Emerging ... Keywords: overlay networks, peer-to-peer networks,Interest groups

Wen-Tsuen Chen; Chi-Hong Chao; Jeng-Long Chiang

2006-04-01T23:59:59.000Z

152

Development of trail network model and web-based bikeway routing service system  

Science Conference Proceedings (OSTI)

A trail network data model provides an infrastructure that can be used for non-motorized transportation analysis and decision making. In this paper, a trail network model, TNM, is discussed, and a web-based bikeway routing service system, BikerRouting, ... Keywords: bikeway routing, trail network model

Qifeng Lu; Stephen Sedlock

2008-11-01T23:59:59.000Z

153

Analysis of a variable speed vapor compression system using artificial neural networks  

Science Conference Proceedings (OSTI)

An artificial neural network (ANN) is a mathematical model that is inspired by the operation of biological neural networks. However, this is typically considered a computational model. An ANN can easily adapt to multiple situations and extract information ... Keywords: Artificial neural network, Energetic performance, Hidden neurons, Mapping configuration, Simulated annealing, Vapor compression system

J. M. Belman-Flores; S. E. Ledesma; M. G. Garcia; J. Ruiz; J. L. RodrGuez-MuOz

2013-09-01T23:59:59.000Z

154

Creating permeable fracture networks for EGS: Engineered systems versus nature  

DOE Green Energy (OSTI)

The United States Department of Energy has set long-term national goals for the development of geothermal energy that are significantly accelerated compared to historical development of the resource. To achieve these goals, it is crucial to evaluate the performance of previous and existing efforts to create enhanced geothermal systems (EGS). Two recently developed EGS sites are evaluated from the standpoint of geomechanics. These sites have been established in significantly different tectonic regimes: 1. compressional Cooper Basin (Australia), and 2. extensional Soultz-sous-Frets (France). Mohr-Coulomb analyses of the stimulation procedures employed at these sites, coupled with borehole observations, indicate that pre-existing fractures play a significant role in the generation of permeability networks. While pre-existing fabric can be exploited to produce successful results for geothermal energy development, such fracture networks may not be omnipresent. For mostly undeformed reservoirs, it may be necessary to create new fractures using processes that merge existing technologies or use concepts borrowed from natural hydrofracture examples (e.g. dyke swarms).

Stephen L Karner

2005-10-01T23:59:59.000Z

155

Impact of Network Wind Profiler Data on a 3-h Data Assimilation System  

Science Conference Proceedings (OSTI)

This paper examines the influence of data from the NOAA Wind Profiler Demonstration Network on a mesoscale data assimilation system. The Mesoscale Analysis and Prediction System is a 3-h intermittent data assimilation system configured in an ...

Tracy Lorraine Smith; Stanley G. Benjamin

1993-05-01T23:59:59.000Z

156

Research on Monitoring System of Circuit Breakers Based on Neural Networks  

Science Conference Proceedings (OSTI)

The paper proposed a monitoring system for the circuit breakers in the substation based on the Back Propagation Neural Networks(BPNN). The novel temperature and humidity sensor was used in the system to get temperature and humidity value in the breakers. ... Keywords: Circuit Breakers, Monitoring System, Neural Networks, Malfunction Diagnosis

Yimin Hou; Tao Liu; Xiangmin Lun; Jianjun Lan; Yang Cui

2010-04-01T23:59:59.000Z

157

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS  

E-Print Network (OSTI)

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS Eric FOCK Ile de La Réunion - FRANCE ABSTRACT This paper deals with neural networks modelling of HVAC systems of HVAC system can be modelled using manufacturer design data presented as derived performance maps

Paris-Sud XI, Université de

158

Development of a predictive system for car fuel consumption using an artificial neural network  

Science Conference Proceedings (OSTI)

A predictive system for car fuel consumption using a back-propagation neural network is proposed in this paper. The proposed system is constituted of three parts: information acquisition system, fuel consumption forecasting algorithm and performance ... Keywords: Artificial neural network, Back-propagation algorithm, Fuel consumption

Jian-Da Wu; Jun-Ching Liu

2011-05-01T23:59:59.000Z

159

Oblivious routing for fat-tree based system area networks with uncertain traffic demands  

Science Conference Proceedings (OSTI)

Fat-tree based system area networks have been widely adopted in high performance computing clusters. In such systems, the routing is often deterministic and the traffic demand is usually uncertain and changing. In this paper, we study routing performance ... Keywords: fat-tree, oblivious routing, system area networks

Xin Yuan; Wickus Nienaber; Zhenhai Duan; Rami Melhem

2007-06-01T23:59:59.000Z

160

Combining artificial neural networks and heuristic rules in a hybrid intelligent load forecast system  

Science Conference Proceedings (OSTI)

In this work, an Artificial Neural Network (ANN) is combined to Heuristic Rules producing a powerful hybrid intelligent system for short and mid-term electric load forecasting. The Heuristic Rules are used to adjust the ANN output to improve the system ... Keywords: artificial neural networks, electric load forecast, heuristic rules, hybrid system

Ronaldo R. B. de Aquino; Aida A. Ferreira; Manoel A. Carvalho, Jr.; Milde M. S. Lira; Geane B. Silva; Otoni Nbrega Neto

2006-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

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

162

Information Assurance: Dependability and Security in Networked Systems  

Science Conference Proceedings (OSTI)

In today's fast paced, infocentric environment, professionals increasingly rely on networked information technology to do business. Unfortunately, with the advent of such technology came new and complex problems that continue to threaten the availability, ... Keywords: Networking

Yi Qian; David Tipper; Prashant Krishnamurthy; James Joshi

2007-11-01T23:59:59.000Z

163

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

164

Mobile identity management system in heterogeneous wireless networks  

Science Conference Proceedings (OSTI)

Heterogeneous wireless networks increasingly encroach on our lives. Various technologies and mobile applications more often than usual are now used by mobile users. Intensive development of mobile networks not only sets new standards for radio, but increasingly ...

?Ukasz Kucharzewski; Zbigniew Kotulski

2011-01-01T23:59:59.000Z

165

Using Bayesian Network to Develop Drilling Expert Systems  

E-Print Network (OSTI)

Long years of experience in the field and sometimes in the lab are required to develop consultants. Texas A&M University recently has established a new method to develop a drilling expert system that can be used as a training tool for young engineers or as a consultation system in various drilling engineering concepts such as drilling fluids, cementing, completion, well control, and underbalanced drilling practices. This method is done by proposing a set of guidelines for the optimal drilling operations in different focus areas, by integrating current best practices through a decision-making system based on Artificial Bayesian Intelligence. Optimum practices collected from literature review and experts' opinions, are integrated into a Bayesian Network BN to simulate likely scenarios of its use that will honor efficient practices when dictated by varying certain parameters. The advantage of the Artificial Bayesian Intelligence method is that it can be updated easily when dealing with different opinions. To the best of our knowledge, this study is the first to show a flexible systematic method to design drilling expert systems. We used these best practices to build decision trees that allow the user to take an elementary data set and end up with a decision that honors the best practices.

Alyami, Abdullah

2012-08-01T23:59:59.000Z

166

New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement  

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

New No-Cost ANTFARM Tool Maps Control System Networks to Help New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security Standards New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security Standards Funded under the Department of Energy's National SCADA Test Bed Program, Sandia National Laboratories recently released a new software tool that will aid energy utility owners in mapping and visualizing their control system networks-a critical first step in meeting the North American Electric Reliability Corporation's Critical Infrastructure Protection (NERC CIP) standards. New No-Cost ANTFARM Tool Maps Control System Networks to Help Implement Cyber Security Standards More Documents & Publications Advanced Network Toolkit for Assessments and Remote Mapping (ANTFARM)

167

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

168

G-NetMon: a GPU-accelerated network performance monitoring system  

SciTech Connect

At Fermilab, we have prototyped a GPU-accelerated network performance monitoring system, called G-NetMon, to support large-scale scientific collaborations. In this work, we explore new opportunities in network traffic monitoring and analysis with GPUs. Our system exploits the data parallelism that exists within network flow data to provide fast analysis of bulk data movement between Fermilab and collaboration sites. Experiments demonstrate that our G-NetMon can rapidly detect sub-optimal bulk data movements.

Wu, Wenji; DeMar, Phil; Holmgren, Don; Singh, Amitoj; /Fermilab

2011-06-01T23:59:59.000Z

169

An Industrial Control System for the Supervision of the CERN Electrical Distribution Network  

E-Print Network (OSTI)

CERN operates a large distribution network for the supply of electricity to the particle accelerators, experiments and the associated infrastructure. The distribution network operates on voltage levels from 400 V to 400 kV with a total yearly consumption of near to 1000 GWh. In the past, the laboratory has developed an in-house control system for this network, using the technologies applied to the accelerator control system. However, CERN is now working on a project to purchase, configure and install an industrial Electrical Network Supervisor (ENS). This is a state-of-the-art industrial control system completely developed and supported by an external contractor. The system - based on a scalable and distributed architecture - will allow the installation to be performed gradually, and will be tested while the existing system is fully operational. Ultimately, the complete electrical distribution network will be supervised with this new system, the maintenance and further development of which will be the complet...

Poulsen, S

1999-01-01T23:59:59.000Z

170

Pathways, Networks and Therapy: A Boolean Approach to Systems Biology  

E-Print Network (OSTI)

The area of systems biology evolved in an attempt to introduce mathematical systems theory principles in biology. Although we believe that all biological processes are essentially chemical reactions, describing those using precise mathematical rules is not easy, primarily due to the complexity and enormity of biological systems. Here we introduce a formal approach for modeling biological dynamical relationships and diseases such as cancer. The immediate motivation behind this research is the urgency to find a practicable cure of cancer, the emperor of all maladies. Unlike other deadly endemic diseases such as plague, dengue and AIDS, cancer is characteristically heterogenic and hence requires a closer look into the genesis of the disease. The actual cause of cancer lies within our physiology. The process of cell division holds the clue to unravel the mysteries surrounding this disease. In normal scenario, all control mechanisms work in tandem and cell divides only when the division is required, for instance, to heal a wound platelet derived growth factor triggers cell division. The control mechanism is tightly regulated by several biochemical interactions commonly known as signal transduction pathways. However, from mathematical point of view, these pathways are marginal in nature and unable to cope with the multi-variability of a heterogenic disease like cancer. The present research is possibly one first attempt towards unraveling the mysteries surrounding the dynamics of a proliferating cell. A novel yet simple methodology is developed to bring all the marginal knowledge of the signaling pathways together to form the simplest mathematical abstract known as the Boolean Network. The malfunctioning in the cell by genetic mutations is formally modeled as stuck-at faults in the underlying Network. Finally a mathematical methodology is discovered to optimally find out the possible best combination drug therapy which can drive the cell from an undesirable condition of proliferation to a desirable condition of quiescence or apoptosis. Although, the complete biological validation was beyond the scope of the current research, the process of in-vitro validation has been already initiated by our collaborators. Once validated, this research will lead to a bright future in the field on personalized cancer therapy.

Layek, Ritwik

2012-05-01T23:59:59.000Z

171

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

172

Implementing Network File System Protocol for Highly Available Clustered Applications on Network Attached Storage  

Science Conference Proceedings (OSTI)

This paper introduces method for implementing NFS protocol for larger block/network packets transfer over to NAS [Network Attached Storage] from Highly Available clients. NAS storage scalability is habitually inadequate to the volume of the appliance. ... Keywords: NAS, NFS, RPC, RAID

K. J. Latesh Kumar

2013-09-01T23:59:59.000Z

173

APS: Distributed air pollution sensing system on Wireless Sensor and Robot Networks  

Science Conference Proceedings (OSTI)

Rapid emergence of Wireless Sensor and Robot Networks (WSRNs) contributes to the deployment of an environmental monitoring system. Three challenging issues are critical to design of an environmental monitoring system, including energy efficiency of sensors, ... Keywords: Energy efficiency, Environmental monitoring, Sensing region partition, Wireless Sensor and Robot Networks

Huai-Lei Fu; Hou-Chun Chen; Phone Lin

2012-05-01T23:59:59.000Z

174

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

175

Modeling Effects of Physical Factors on Controller Area Network in Cyber-physical Systems  

Science Conference Proceedings (OSTI)

Cyber-physical systems (CPS) are becoming a promising research field to integrate the computing components, the physical processes, and the communication networks. A primary challenge in designing CPS is to understand the effect of physical factors on ... Keywords: Cyber-physical systems (CPS), Controller Area Network (CAN), performance analysis, temperature, electromagnetic interference

Bo Shen, Xingshe Zhou, Ru Wang

2013-08-01T23:59:59.000Z

176

Security data extraction from IEC 61850 ACSI models for network and system management  

Science Conference Proceedings (OSTI)

The international standard IEC 62351 proposed the format of abstract data object for secure smart grid controls which is named as Network and System Management (NSM). It is devised to respond not only deliberate attacks such as cyber hacking and sabotage, ... Keywords: IEC 61850, IEC 62351, network and system management, power grid security, smart grid security

Chung-Hyo Kim; Moon-Seok Choi; Seong-Ho Ju; Yong-Hun Lim; Jong-Mock Baek

2011-08-01T23:59:59.000Z

177

An OVAL-based active vulnerability assessment system for enterprise computer networks  

Science Conference Proceedings (OSTI)

Many security problems are caused by vulnerabilities hidden in enterprise computer networks. It is very important for system administrators to have knowledge about the security vulnerabilities. However, current vulnerability assessment methods may encounter ... Keywords: Attack path, Network security, Open vulnerability assessment language, Predicate logic, Relational database management system, Security vulnerability

Xiuzhen Chen; Qinghua Zheng; Xiaohong Guan

2008-11-01T23:59:59.000Z

178

Analysis of a reputation system for Mobile Ad-Hoc Networks with liars  

Science Conference Proceedings (OSTI)

The application of decentralized reputation systems is a promising approach to ensure cooperation and fairness, as well as to address random failures and malicious attacks in Mobile Ad-Hoc Networks. However, they are potentially vulnerable to liars. ... Keywords: Mean-field approach, Mobile Ad-Hoc Network, Performance optimization, Reputation system, Robustness against liars

Jochen Mundinger; Jean-Yves Le Boudec

2008-03-01T23:59:59.000Z

179

Modelling of a vertical ground coupled heat pump system by using artificial neural networks  

Science Conference Proceedings (OSTI)

This paper describes the applicability of artificial neural networks (ANNs) to estimate of performance of a vertical ground coupled heat pump (VGCHP) system used for cooling and heating purposes experimentally. The system involved three heat exchangers ... Keywords: Cooling, Ground, Heat exchanger, Heat pump, Heating, Neural network

Hikmet Esen; Mustafa Inalli

2009-09-01T23:59:59.000Z

180

A hybrid simulation-adaptive network based fuzzy inference system for improvement of electricity consumption estimation  

Science Conference Proceedings (OSTI)

This paper presents a hybrid adaptive network based fuzzy inference system (ANFIS), computer simulation and time series algorithm to estimate and predict electricity consumption estimation. The difficulty with electricity consumption estimation modeling ... Keywords: Adaptive network based fuzzy inference system, Computer simulation, Electricity consumption, Hybrid, Improvement, Time series

A. Azadeh; M. Saberi; A. Gitiforouz; Z. Saberi

2009-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Energy Management System for an Hybrid Electric Vehicle, Using Ultracapacitors and Neural Networks  

E-Print Network (OSTI)

Energy Management System for an Hybrid Electric Vehicle, Using Ultracapacitors and Neural Networks management system for hybrid electric vehicles (HEV), using neural networks (NN), was developed and tested, similar in shape and size to a Chevrolet S-10, which was converted to an electric vehicle

Rudnick, Hugh

182

Distributed model-invariant detection of unknown inputs in networked systems  

Science Conference Proceedings (OSTI)

This work considers hypothesis testing in networked systems under severe lack of prior knowledge. In previous work we derived a centralized Uniformly Most Powerful Invariant (UMPI) approach to testing unknown inputs in unknown Linear Time Invariant (LTI) ... Keywords: invariant testing, networked systems

James Weimer; Damiano Varagnolo; Karl Henrik Johansson

2013-04-01T23:59:59.000Z

183

Solar Energy Collection and Management for Networked Infomechanical Systems (NIMS)  

E-Print Network (OSTI)

Networked Sensing Solar Energy Collection and Management forProposed Solution: Solar Energy Harvesting Why is Solarbeing recharged Solar energy harvesting and storage allow

2003-01-01T23:59:59.000Z

184

NISTIR 7581, System and Network Security Acronyms and ...  

Science Conference Proceedings (OSTI)

... LAN local area network LCD liquid crystal display LDA local delivery agent LDAP Lightweight Directory Access Protocol LED light emitting diode ...

2012-03-01T23:59:59.000Z

185

Sherlocka system for diagnosing power distribution ring network faults  

Science Conference Proceedings (OSTI)

This paper reports the development of a software system, SHERLOCK, for fault diagnosis in power distribution ring networks. The system consists of a fault diagnosis subsystem implemented using Prolog and a user interface subsystem developed in the SmallTalk ...

Kit Po Wong; Chi Ping Tsang; Wan Yee Chan

1988-06-01T23:59:59.000Z

186

Tank Waste Information Network System (TWINS) FY 2001 Data Management Plan  

SciTech Connect

The mission of Tank Waste Information Network System (TWINS) is to provide system users with quality tank data and information when needed, in the form needed and at a reasonable cost.

ADAMS, M.R.

2000-06-12T23:59:59.000Z

187

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

188

The design and implementation of real-time environment monitoring systems based on wireless sensor networks  

Science Conference Proceedings (OSTI)

This research focuses on the implementation of a real-time environment monitoring system for environment detection using wireless sensor networks. The purpose of our research is to construct the system on the real-time environment with the technology ...

Kyung-Hoon Jung; Seok-Cheol Lee; Hyun-Suk Hwang; Chang-Soo Kim

2006-05-01T23:59:59.000Z

189

Neural Network Mapping of Magnet Based Position Sensing System for Autonomous Robotic Vehicle  

Science Conference Proceedings (OSTI)

In this paper a neural network mapping of magnet based position sensing system for an autonomous robotic vehicle. The position sensing system using magnetic markers embedded under the surface of roadway pavement. An important role of magnetic position ...

Dae---Yeong Im; Young-Jae Ryoo; Jang-Hyun Park; Hyong-Yeol Yang; Ju-Sang Lee

2007-04-01T23:59:59.000Z

190

Sensor network based vehicle classification and license plate identification system  

Science Conference Proceedings (OSTI)

Typically, for energy efficiency and scalability purposes, sensor networks have been used in the context of environmental and traffic monitoring applications in which operations at the sensor level are not computationally intensive. But increasingly, ... Keywords: acoustic vehicle classification, license plate detection, seismic, wireless sensor networks

Jan Frigo; Vinod Kulathumani; Sean Brennan; Ed Rosten; Eric Raby

2009-06-01T23:59:59.000Z

191

An artificial neural network system for diagnosing gas turbine engine fuel faults  

DOE Green Energy (OSTI)

The US Army Ordnance Center & School and Pacific Northwest Laboratories are developing a turbine engine diagnostic system for the M1A1 Abrams tank. This system employs Artificial Neural Network (AN) technology to perform diagnosis and prognosis of the tank`s AGT-1500 gas turbine engine. This paper describes the design and prototype development of the ANN component of the diagnostic system, which we refer to as ``TEDANN`` for Turbine Engine Diagnostic Artificial Neural Networks.

Illi, O.J. Jr. [Army Ordnance Center and School, Aberdeen Proving Ground, MD (United States). Knowledge Engineering Group (KEG); Greitzer, F.L.; Kangas, L.J. [Pacific Northwest Lab., Richland, WA (United States); Reeve, T. [Expert Solutions, Stratford, CT (United States)

1994-04-01T23:59:59.000Z

192

The CASA Integrated Project 1 Networked Radar System  

Science Conference Proceedings (OSTI)

This paper describes the Collaborative Adaptive Sensing of the Atmosphere (CASA) Integrated Project 1 (IP1) weather radar network, the first distributed collaborative adaptive sensing test bed of the Engineering Research Center for Collaborative ...

Francesc Junyent; V. Chandrasekar; D. McLaughlin; E. Insanic; N. Bharadwaj

2010-01-01T23:59:59.000Z

193

A collaborative botnets suppression system based on overlay network  

Science Conference Proceedings (OSTI)

Botnets are extremely versatile programs used in many network attacks, such as sending large volumes of spam or launching Distributed Denial-of-Service DDoS attacks. Botnets can switch command-and-control servers automatically, which makes completely ...

Fuye Han; Zhen Chen; HongFeng Xu; Haopei Wang; Yong Liang

2012-04-01T23:59:59.000Z

194

Fuzzy diagnosis in AHU system using dynamic fuzzy neural network  

Science Conference Proceedings (OSTI)

In this paper, an efficient fault diagnosis method for air-handling unit using dynamic fuzzy neural networks (DFNNs) is presented. The proposed fault diagnosis method has the following salient features: (1) structure identification and parameters estimation ...

Du Juan; Er Meng Joo

2003-12-01T23:59:59.000Z

195

Developing monthly operating rules for a cascade system of reservoirs: Application of Bayesian Networks  

Science Conference Proceedings (OSTI)

In this paper, a Bayesian Network (BN) is utilized for developing monthly operating rules for a cascade system of reservoirs which is mainly aimed to control floods and supply irrigation needs. BN is trained and verified using the results of a reservoir ... Keywords: Bayesian Networks (BNs), Long-term and short-term operation optimization, Reservoir operating rules, Varying chromosome Length Genetic Algorithm (VLGA)

Bahram Malekmohammadi; Reza Kerachian; Banafsheh Zahraie

2009-12-01T23:59:59.000Z

196

A forecasting system for car fuel consumption using a radial basis function neural network  

Science Conference Proceedings (OSTI)

A predictive system for car fuel consumption using a radial basis function (RBF) neural network is proposed in this paper. The proposed work consists of three parts: information acquisition, fuel consumption forecasting algorithm and performance evaluation. ... Keywords: Artificial neural network, Car fuel consumption, Radial basis function algorithm

Jian-Da Wu; Jun-Ching Liu

2012-02-01T23:59:59.000Z

197

Optimal Resource Allocation for Pervasive Health Monitoring Systems with Body Sensor Networks  

Science Conference Proceedings (OSTI)

Pervasive health monitoring is an eHealth service, which plays an important role in prevention and early detection of diseases. There are two major challenges in pervasive health monitoring systems with Body Sensor Networks (BSNs). The first challenge ... Keywords: Body sensor networks, pervasive health monitoring, optimal resource allocation, quality of service (QoS), sustainable power supply, energy harvesting, convex optimization.

Yifeng He; Wenwu Zhu; Ling Guan

2011-11-01T23:59:59.000Z

198

Radio access network power management considering radio over fiber technique for 4G mobile system  

Science Conference Proceedings (OSTI)

Radio over fiber technique was suggested as excelent candidates for 4G radio access network considering large number mobile users. With higher number of base stations, a microwave link presents more disadvantages across base stations in relation to power ... Keywords: 4G mobile system, fiber dispersion, power manaegment, radio access network, radio over fiber

Jalal J. Hamad Ameen; Widad Ismail; Sevia M. Idrus

2011-03-01T23:59:59.000Z

199

Performance prediction of a ground-coupled heat pump system using artificial neural networks  

Science Conference Proceedings (OSTI)

This paper describes the applicability of artificial neural networks (ANNs) to predict performance of a horizontal ground-coupled heat pump (GCHP) system. Performance forecasting is the precondition for the optimal control and energy saving operation ... Keywords: Artificial neural network, Coefficient of performance, Ground-coupled heat pump, Horizontal heat exchanger, Learning algorithm

Hikmet Esen; Mustafa Inalli; Abdulkadir Sengur; Mehmet Esen

2008-11-01T23:59:59.000Z

200

A Touch-Dim Network for the Dimming Control of Lighting System  

Science Conference Proceedings (OSTI)

DALI is a popular interface of lighting network system with an excellent dimming facility, but it is too complicated when it is applied in family house. Touch-Dim installation of DALI ballast is then developed. The installation and operation are much ... Keywords: DALI, lighting, network, Touch-Dim

Jyh-Ching Juang; Hung-Chi Wang; Chun-Lin Lu; Wen-Ming Chen; Ching-Wen Hsu

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Results from a discrete fracture network model of a Hot Dry Rock system  

Science Conference Proceedings (OSTI)

The work described represents a move towards better representations of the natural fracture system. The discrete fracture network model used during the study was the NAPSAC code (Grindrod et al, 1992). The goals of the work were to investigate the application of discrete fracture network models to Hot Dry Rock systems, increase the understanding of the basic thermal extraction process and more specifically the understanding of the Rosemanowes Phase 2B system. The aim in applying the work to the Rosemanowes site was to use the discrete fracture network approach to integrate a diverse set of field measurements into as simple a model as possible.

Lanyon, G.W.; Batchelor, A.S.; Ledingham, P.

1993-01-28T23:59:59.000Z

202

Application of Functional Link Neural Network to HVAC Thermal Dynamic System Identification  

E-Print Network (OSTI)

Abstract Recent efforts to incorporate aspects of artificial intelligence into the design and operation of automatic control systems have focused attention on techniques such as fuzzy logic, artificial neural networks, and expert systems. The use of computers for direct digital control highlights the recent trend toward more effective and efficient heating, ventilating, and airconditioning (HVAC) control methodologies. Researchers in the HVAC field have stressed the importance of self learning in building control systems and have encouraged further studies in the integration of optimal control and other advanced techniques into the formulation of such systems. Artificial neural networks can also be used to emulate the plant dynamics, in order to estimate future plant outputs and obtain plant input/output sensitivity information for on-line neural control adaptation. This paper describes a functional link neural network approach to performing the HVAC thermal dynamic system identification. Methodologies to reduce inputs of the functional link network to reduce the complexity and speed up the training speed will be presented. Analysis and comparison between the functional link network approach and the conventional network approach for the HVAC thermal modeling will also be presented. Index TermsFunctional link, HVAC, intelligent control, neural network, system identification.

Jason Teeter; Mo-yuen Chow; Senior Member

1998-01-01T23:59:59.000Z

203

Identification and modeling for non-linear dynamic system using neural networks type MLP  

Science Conference Proceedings (OSTI)

In control systems, the model dynamics of linear systems is the principal and most important phase of a project, but when working with dynamic of non-linear systems obtain the model becomes a very complex task can be used techniques of system identification. ... Keywords: LP, algorithms, dynamic backprogation, modeling, multilayer perceptrons, neural networks dynamics, non-linear dynamics, training

Hernn Gonzlez Acua; Max Suell Dutra; Omar Lengerke

2009-06-01T23:59:59.000Z

204

A cyber-physical experimentation environment for the security analysis of networked industrial control systems  

Science Conference Proceedings (OSTI)

Although many studies address the security of Networked Industrial Control Systems (NICSs), today we still lack an efficient way to conduct scientific experiments that measure the impact of attacks against both the physical and the cyber parts of these ...

BLa Genge; Christos Siaterlis; Igor Nai Fovino; Marcelo Masera

2012-09-01T23:59:59.000Z

205

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

206

Appreciating Wind Energy's Probabilistic Nature within the Uncertainty Context of Electric Power System Network Planning  

Science Conference Proceedings (OSTI)

Electric power system network planning is influenced by the uncertainty in many parameters, such as future customer-demand/fossil-fuel-price parameter projections and new generation plant locations, which can generally be modeled in an approximate or ...

Daniel J. Burke, M. J. O'Malley

2013-01-01T23:59:59.000Z

207

Neural networks based multiplex forecasting system of the end-point of copper blow period  

Science Conference Proceedings (OSTI)

The neural network and the experiential evaluation method are introduced into the industrial converting process forecast, and a multiplex forecast system is proposed at the end-point of copper blow period in a matte converting process. The fuzzy clustering ...

Lihua Xue; Hongzhong Huang; Yaohua Hu; Zhangming Shi

2005-05-01T23:59:59.000Z

208

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

209

A Parallel Architecture for Network Control and Mobility Tracking in Wireless Systems  

Science Conference Proceedings (OSTI)

In a wireless system the network logically rearranges itself rapidly whenever terminals move from cell to cell. This ability to adapt itself to changing locations of its terminals adds a new layer of complexity to wireless control software. With ...

Abhaya Asthana; Paul Krzyzanowski

1997-03-01T23:59:59.000Z

210

Intercell radio resource management through network coordination for IMT-advanced systems  

Science Conference Proceedings (OSTI)

In IMT-Advanced systems, a cross-layer approach coupling network coordination and radio resource managements enables mitigation of intercell interference and throughput improvement of cell-edge users. To facilitate coordination among base stations, we ...

Young-June Choi; Narayan Prasad; Sampath Rangarajan

2010-02-01T23:59:59.000Z

211

Basin and Petroleum System Modeling and Bayesian Networks  

E-Print Network (OSTI)

: Bayesian Networks (BN) for oil and gas explorations Interested both in the statistical aspects (dynamic) for oil and gas explorations Interested both in the statistical aspects (dynamic programming, best The principle geologic risk factors in oil and gas exploration are commonly defined as the trap (consisting

Eidsvik, Jo

212

Energy Balancing Intrusion Detection System in Wireless Sensor Network  

Science Conference Proceedings (OSTI)

wireless sensor network (WSN) is vulnerable to a wide range of attacks due to deployment in the hostile ervironment and having limited resources. The security of WSN becomes a very important issue with the rapid development of WSN. Instrusion detection ... Keywords: WSN, Energy-effiency, Clustering, IDS

Chunyan Peng; Bing Liu

2012-10-01T23:59:59.000Z

213

The SysMES Framework: System Management for Networked Embedded Systems and Clusters  

E-Print Network (OSTI)

Automated system management for large distributed and heterogeneous environments is a common challenge in modern computer sciences. Desired properties of such a management system are, among others, a minimal dependency on human operators for problem recognition and solution, adaptability to increasing loads, fault tolerance and the flexibility to integrate new management resources at runtime. Existing tools address parts of these requirements however there is no single integrated framework which possesses all mentioned characteristics. SysMES was developed as an integrated framework for automated monitoring and management of networked devices. In order to achieve the requirements of scalability and fault tolerance, a fully distributed and decentralized architecture has been chosen. The framework comprises a monitoring module, a rule engine and an executive module for the execution of actions. A formal language has been defined which allows administrators to define complex spatial and temporal rule conditions ...

Lara Martinez, Camilo Ernesto

214

PeerMon: a peer-to-peer network monitoring system  

Science Conference Proceedings (OSTI)

We present PeerMon, a peer-to-peer resource monitoring system for general purpose Unix local area network (LAN) systems. PeerMon is designed to monitor system resources on a single LAN, but it also could be deployed on several LANs where some inter-LAN ...

Tia Newhall; Janis Libeks; Ross Greenwood; Jeff Knerr

2010-11-01T23:59:59.000Z

215

A novel fault diagnosis method based-on modified neural networks for photovoltaic systems  

Science Conference Proceedings (OSTI)

The main purpose of this paper is to propose an intelligent fault diagnostic method for photovoltaic (PV) systems. First, Solar Pro software package was used to simulate a photovoltaic system for gathering power generation data of photovoltaic modules ... Keywords: extension theory, fault diagnosis, matter-element model, neural networks, photovoltaic (PV) system

Kuei-Hsiang Chao; Chao-Ting Chen; Meng-Hui Wang; Chun-Fu Wu

2010-06-01T23:59:59.000Z

216

LHCNet: Wide Area Networking and Collaborative Systems for HEP  

SciTech Connect

This proposal presents the status and progress in 2006-7, and the technical and financial plans for 2008-2010 for the US LHCNet transatlantic network supporting U.S. participation in the LHC physics program. US LHCNet provides transatlantic connections of the Tier1 computing facilities at Fermilab and Brookhaven with the Tier0 and Tier1 facilities at CERN as well as Tier1s elsewhere in Europe and Asia. Together with ESnet, Internet2, the GEANT pan-European network, and NSFs UltraLight project, US LHCNet also supports connections between the Tier2 centers (where most of the analysis of the data will take place, starting this year) and the Tier1s as needed.See report

Newman, H.B,

2007-08-20T23:59:59.000Z

217

Network and System Management for Reliability and Cyber Security  

Science Conference Proceedings (OSTI)

The evolving control of the electric power grid is increasingly dependent on information technology and telecommunication infrastructures, which, like the grid itself, must be managed in a holistic way to ensure reliability and security. The management of this information infrastructure requires connectivity and analytics to support both information technology (IT) and operational technology (OT) assets in a unified manner.This project utilized a telecommunications modeled network ...

2012-11-28T23:59:59.000Z

218

NETL: Gasification Systems - Model Based Optimal Sensor Network Design for  

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

Model Based Optimal Sensor Network Design for Condition Monitoring Model Based Optimal Sensor Network Design for Condition Monitoring Project Number: FE0005712 General Electric (GE) Global Research is developing an advanced model-based optimal sensor network to monitor the condition of the gasification section in an integrated gasification combined cycle (IGCC) plant. The work builds on model-based controls aimed at enhancing efficiency and operational flexibility through increased automation. Within an overall strategy of employing model-based online monitoring and predictive controls, GE Global Research is extending existing models for the gasifier and radiant syngas cooler to include the effects of degradation and fouling on the sensed variables like temperature etc., and will implement an estimation algorithm to assess the extent of gasifier refractory degradation and radiant syngas cooler fouling. An optimization-based solution will be employed to optimally place the hardware sensors utilized in the estimation algorithm in order to achieve the monitoring requirements at the lowest cost. The performance of the sensor placement algorithm and resulting monitoring solution will be demonstrated through simulations using representative test cases. The overall approach is one of the first to be applicable to condition monitoring of critical components in IGCC plants.

219

Optimal Nodal Control of Networked Hyperbolic Systems: Evaluation ...  

E-Print Network (OSTI)

Nov 4, 2004 ... At the nodes, the system is governed by algebraic node conditions. The system is controlled at the nodes of the graph. Optimal control...

220

Modeling, Simulation and Analysis of Complex Networked Systems: A Program Plan for DOE Office of Advanced Scientific Computing Research  

Science Conference Proceedings (OSTI)

Many complex systems of importance to the U.S. Department of Energy consist of networks of discrete components. Examples are cyber networks, such as the internet and local area networks over which nearly all DOE scientific, technical and administrative data must travel, the electric power grid, social networks whose behavior can drive energy demand, and biological networks such as genetic regulatory networks and metabolic networks. In spite of the importance of these complex networked systems to all aspects of DOE's operations, the scientific basis for understanding these systems lags seriously behind the strong foundations that exist for the 'physically-based' systems usually associated with DOE research programs that focus on such areas as climate modeling, fusion energy, high-energy and nuclear physics, nano-science, combustion, and astrophysics. DOE has a clear opportunity to develop a similarly strong scientific basis for understanding the structure and dynamics of networked systems by supporting a strong basic research program in this area. Such knowledge will provide a broad basis for, e.g., understanding and quantifying the efficacy of new security approaches for computer networks, improving the design of computer or communication networks to be more robust against failures or attacks, detecting potential catastrophic failure on the power grid and preventing or mitigating its effects, understanding how populations will respond to the availability of new energy sources or changes in energy policy, and detecting subtle vulnerabilities in large software systems to intentional attack. This white paper outlines plans for an aggressive new research program designed to accelerate the advancement of the scientific basis for complex networked systems of importance to the DOE. It will focus principally on four research areas: (1) understanding network structure, (2) understanding network dynamics, (3) predictive modeling and simulation for complex networked systems, and (4) design, situational awareness and control of complex networks. The program elements consist of a group of Complex Networked Systems Research Institutes (CNSRI), tightly coupled to an associated individual-investigator-based Complex Networked Systems Basic Research (CNSBR) program. The CNSRI's will be principally located at the DOE National Laboratories and are responsible for identifying research priorities, developing and maintaining a networked systems modeling and simulation software infrastructure, operating summer schools, workshops and conferences and coordinating with the CNSBR individual investigators. The CNSBR individual investigator projects will focus on specific challenges for networked systems. Relevancy of CNSBR research to DOE needs will be assured through the strong coupling provided between the CNSBR grants and the CNSRI's.

Brown, D L

2009-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

The influence of utility - interactive PV system characteristics to AC power network  

SciTech Connect

Two experimental PV systems are constructed and operated. One is a system with a line-commutated inverter and another uses a self-commutated inverter and is operated alone as an independent power source when the power network is in trouble. Operating and generating characteristics have been measured for the line-commutated inverter system and for the self-commutated inverter system connected to the Ac simulated network which simulates the actual power distribution system. For the system voltage fluctuation, amplitude of variation in AC voltage was measured at the joining point of the simulated distribution network connected to the PV system by changing the system short circuit current ration. For the harmonics characteristics, the line-commutated inverter system is a harmonic current power source and the self-commutated inverter system is a harmonic voltage power source. The protective sequence for failures in the power system or PV system is also studied. An optimum protection control method with an emphasis on safety is proposed for the self-commutated inverter system. This paper also describes examples of failures in solar cell arrays during the operation of these PV systems and proposes data for improving the reliability of solar cell arrays.

Takeda, Y.; Kaminosono, H.; Takigawa, K.

1982-09-01T23:59:59.000Z

222

Building a Flexible Energy Management System with LonWorks Control Network  

Science Conference Proceedings (OSTI)

To effectively improve the efficiency of energy supply, quantification is required to determine its significance in our daily lives. Building an energy management system to monitor and acquire information such as energy supply and environmental factors ... Keywords: LonWorks, Control network, Energy management system, Database

Ching-Biau Tzeng; Tzuu-Shaang Wey; Sheng-Hsiung Ma

2008-11-01T23:59:59.000Z

223

TESLA-Based Defense Against Pollution Attacks in P2P Systems with Network Coding  

E-Print Network (OSTI)

TESLA-Based Defense Against Pollution Attacks in P2P Systems with Network Coding Anh Le, Athina and time asymmetry (as in TESLA [1]) to provide source authentication for the detection scheme and non; pollution; detection; identification; TESLA; homomorphic MAC. I. INTRODUCTION Peer-to-peer (P2P) systems

Markopoulou, Athina

224

Sound-Based ranging system in greenhouse environment with multipath effect compensation using artificial neural network  

Science Conference Proceedings (OSTI)

In this study, sound-based ranging system in greenhouse environment with compensation of measurement error caused by multipath effect using Artificial Neural Network (ANN) was proposed. Greenhouse environment has special characteristic which is different ... Keywords: ANN, greenhouse, multipath effect, sound-based ranging system

Slamet Widodo; Tomoo Shiigi; Naing Min Than; Yuichi Ogawa; Naoshi Kondo

2012-11-01T23:59:59.000Z

225

Damping of low frequency oscillations in power system network using swarm intelligence tuned fuzzy controller  

Science Conference Proceedings (OSTI)

In this paper, a particle swarm intelligent optimisation based optimal fuzzy scheme has been developed to design intelligent adaptive controllers for improving the dynamic and transient stability performance of multimachine power system. This concept ... Keywords: PSO, PSS, adaptive control, dynamic stability, fuzzy control, intelligent control, low frequency oscillations, neural networks, neuro-fuzzy logic, particle swarm optimisation, power system stabiliser

N. Albert Singh; K. A. Muraleedharan; K. Gomathy

2010-12-01T23:59:59.000Z

226

TACO-DTN: a time-aware content-based dissemination system for delay tolerant networks  

Science Conference Proceedings (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate ... Keywords: buffer management, content-based routing, delay tolerant networking, event dissemination, infostations, publish/subscribe systems

Giuseppe Sollazzo; Mirco Musolesi; Cecilia Mascolo

2007-06-01T23:59:59.000Z

227

Evaluation of energy-efficiency in lighting systems using sensor networks  

Science Conference Proceedings (OSTI)

In modern energy aware buildings, lighting control systems are put in place so to maximise the energy-efficiency of the lighting system without effecting the comfort of the occupant. In many cases this involves utilising a set of presence sensors, with ... Keywords: building, decision, efficiency, energy, lighting, network, sensor, support

Declan T. Delaney; Gregory M. P. O'Hare; Antonio G. Ruzzelli

2009-11-01T23:59:59.000Z

228

Poster: INPRESS: indoor climate prediction and evaluation system for energy efficiency using sensor networks  

Science Conference Proceedings (OSTI)

Modern buildings include an indoor climate control system, installed and operated to maintain a comfortable environment for the building occupants. However, these climate control systems consume a significant amount of energy due to an inefficient control ... Keywords: energy efficiency, indoor climate, sensor network

Jae Yoon Chong; Jinwook Baek; Sukun Kim

2011-11-01T23:59:59.000Z

229

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

E-Print Network (OSTI)

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong, Xiaofan and the power they obtain from their environment. Several micro-solar powered designs have been developed prominent designs of micro-solar power systems (Heliomote and Trio), and interpret the results to propose

Culler, David E.

230

Decision system based on neural networks to optimize the energy efficiency of a petrochemical plant  

Science Conference Proceedings (OSTI)

The energy efficiency of industrial plants is an important issue in any type of business but particularly in the chemical industry. Not only is it important in order to reduce costs, but also it is necessary even more as a means of reducing the amount ... Keywords: Cost optimization, Crude oil distillation, Data mining, Decision system, Expert system, Neural network, Petrochemical plant

Iigo Monedero; Flix Biscarri; Carlos Len; Juan I. Guerrero; Rocio Gonzlez; Luis Prez-Lombard

2012-08-01T23:59:59.000Z

231

Energy saving system for office lighting by using PSO and ZigBee network  

Science Conference Proceedings (OSTI)

In order to reduce the amount of wasted energy in office lighting and provide a major contribution to lowering overall energy consumption, we are developing a new energy saving system for office lighting by using adjustable lamp, ZigBee Wireless Sensor ... Keywords: PSO, energy saving system, office lighting, wireless sensor network, zigbee

Wa Si; Harutoshi Ogai; Tansheng Li; Masatoshi Ogawa; Katsumi Hirai; Hidehiro Takahashi

2010-12-01T23:59:59.000Z

232

A tele-immersion environment for traditional Japanese crafting system over the Japan Gigabit Network  

Science Conference Proceedings (OSTI)

In this paper, we propose a tele-immersion environment for the traditional Japanese crafting system, which uses a highly immersive system based on a Virtual Reality (VR) environment, such as multiple Cave Automatic Virtual Environment (CAVE) ... Keywords: Japan, Japanese crafts, VR presentation, human sensibility, kansei, multimodal communication, sensitivity information processing, tele-immersion, traditional crafts, ultra high speed networks, virtual reality

Tomoyuki Ishida; Akihiro Miyakawa; Yoshitaka Shibata

2008-05-01T23:59:59.000Z

233

Performance of a Dynamically Controlled Inverter in a Photovoltaic System Interconnected with a Secondary Network Distribution System  

DOE Green Energy (OSTI)

In 2008, a 300 kW{sub peak} photovoltaic (PV) system was installed on the rooftop of the Colorado Convention Center (CCC). The installation was unique for the electric utility, Xcel Energy, as it had not previously permitted a PV system to be interconnected on a building served by the local secondary network distribution system (network). The PV system was installed with several provisions; one to prevent reverse power flow, another called a dynamically controlled inverter (DCI), that curtails the output of the PV inverters to maintain an amount of load supplied by Xcel Energy at the CCC. The DCI system utilizes current transformers (CTs) to sense power flow to insure that a minimum threshold is maintained from Xcel Energy through the network transformers. The inverters are set to track the load on each of the three phases and curtail power from the PV system when the generated PV system current reaches 95% of the current on any phase. This is achieved by the DCI, which gathers inputs from current transformers measuring the current from the PV array, Xcel, and the spot network load. Preventing reverse power flow is a critical technical requirement for the spot network which serve this part of the CCC. The PV system was designed with the expectation that the DCI system would not curtail the PV system, as the expected minimum load consumption was historically higher than the designed PV system size. However, the DCI system has operated many days during the course of a year, and the performance has been excellent. The DCI system at the CCC was installed as a secondary measure to insure that a minimum level of power flows to the CCC from the Xcel Energy network. While this DCI system was intended for localized control, the system could also reduce output percent if an external smart grid control signal was employed. This paper specifically focuses on the performance of the innovative design at this installation; however, the DCI system could also be used for new s- art grid-enabled distribution systems where renewables power contributions at certain conditions or times may need to be curtailed.

Coddington, M. H.; Kroposki, B. D.; Basso, T.; Berger, D.; Crowell, K.; Hayes, J.

2011-01-01T23:59:59.000Z

234

Green Power Network: On-site Renewable Energy Systems  

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

On-site Renewable Energy Systems On-site Renewable Energy Systems For consumers or organizations wishing to install on-site renewable energy systems, there are a variety of options available, including electricity generating systems and thermal systems that can displace electricity or fossil fuel use. Solar photovoltaics convert sunlight directly into electricity. Solar hot water systems use the sun's energy to heat water. Wind turbines convert the kinetic energy in wind into mechanical power that runs a generator to produce electricity. Geothermal heat pumps use the constant temperature of the upper 10 feet of the Earth to heat and cool buildings. Fuel cells produce electricity from hydrogen and oxygen and can be powered by a number of sources, including renewables. Biomass power systems use biomass feedstocks such as wood waste or methane from animal waste or other sources to generate electricity. Biomass resources can also be used in direct heat and combined heat and power applications.

235

Tropical cyclone identification and tracking system using integrated neural oscillatory elastic graph matching and hybrid RBF network track mining techniques  

Science Conference Proceedings (OSTI)

We present an automatic and integrated neural network-based tropical cyclone (TC) identification and track mining system. The proposed system consists of two main modules: 1) TC pattern identification system using neural oscillatory elastic graph matching ...

R. S.T. Lee; J. N.K. Liu

2000-05-01T23:59:59.000Z

236

The Application of Visualization and Neural Network Techniques in A Power Transformer Condition Monitoring System  

E-Print Network (OSTI)

In this paper, visualization and neural network techniques are applied together to a power transformer condition monitoring system. Through visualizing the data from the chromatogram of oil-dissolved gases by 2-D and/or 3-D graphs, the potential failures of the power transformers become easy to be identified. Through employing some specific neural network techniques, the data from the chromatogram of oil-dissolved gases as well as those from the electrical inspections can be effectively analyzed. Experiments show that the described system works quite well in condition monitoring of power transformers.

Z.-H. Zhou; Y. Jiang; X.-R. Yin; S.-F. Chen; Zhi-hua Zhou; Yuan Jiang; Xu-ri Yin; Shi-fu Chen

2002-01-01T23:59:59.000Z

237

Geometric detection of coupling directions by means of inter-system recurrence networks  

E-Print Network (OSTI)

We introduce a geometric method for identifying the coupling direction between two dynamical systems based on a bivariate extension of recurrence network analysis. Global characteristics of the resulting inter-system recurrence networks provide a correct discrimination for weakly coupled R\\"ossler oscillators not yet displaying generalised synchronisation. Investigating two real-world palaeoclimate time series representing the variability of the Asian monsoon over the last 10,000 years, we observe indications for a considerable influence of the Indian summer monsoon on climate in Eastern China rather than vice versa. The proposed approach can be directly extended to studying $K>2$ coupled subsystems.

Jan H. Feldhoff; Reik V. Donner; Jonathan F. Donges; N. Marwan; J. Kurths

2013-01-05T23:59:59.000Z

238

Brimon: a sensor network system for railway bridge monitoring  

Science Conference Proceedings (OSTI)

Railway systems are critical in many regions, and can consist of several tens of thousands of bridges, being used over several decades. It is critical to have a system to monitor the health of these bridges and report when and where maintenance operations ... Keywords: bottom-up design, event detection, mobile data transfer, power-efficient operation, wireless sensor applications

Kameswari Chebrolu; Bhaskaran Raman; Nilesh Mishra; Phani Kumar Valiveti; Raj Kumar

2008-06-01T23:59:59.000Z

239

A Privacy Preservation Model for Facebook-Like Social Network Systems  

E-Print Network (OSTI)

Recent years have seen unprecedented growth in the popularity of social network systems, with Facebook being an archetypical example. Due to the distributed nature of access control in Facebook-style social network systems, it is difficult for a user to anticipate the privacy consequence of such actions as modifying a privacy setting or befriending another user. This work takes a first step in addressing this challenge, by proposing an access control model that formalizes and generalizes the privacy preservation mechanism of Facebook. The model can be instantiated into a family of Facebook-style social network systems, each with a recognizably different access control mechanism, so that Facebook is but one instantiation of the model. We also demonstrate that the model can be instantiated to express policies that, on the one hand, are not currently supported by Facebook, but on the other hand possess rich and natural social significance. This work thus deepens our understanding of the design space of privacy preservation mechanisms for social network systems, and lays out a formal framework for policy analysis in these systems.

Philip W. L. Fong; Mohd Anwar; Zhen Zhao

2009-01-01T23:59:59.000Z

240

A systems analysis of scheduled air transportation networks  

E-Print Network (OSTI)

This work establishes the conditions for airline system design building from submodels of smaller aspects of air transportation. The first three sections develop submodels which then are combined in extensive numerical ...

Swan, William M.

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Operational Support Systems for Carrier-Scale IP Networks  

Science Conference Proceedings (OSTI)

The operational support systems (OSS) of any major telecommunications operator are the underlying resource for the management and delivery of all its communications services. It is used for handling direct customer interactions (helpdesk, orders, fault ...

C. B. Hatch; P. C. Utton; R. E. A. Leaton

2000-07-01T23:59:59.000Z

242

Performance in Planning Smart Systems for the Access Network  

Science Conference Proceedings (OSTI)

Improvements in system technologies continue apace with new developments in software methods arguably outstripping even the breakneck progress in hardware power described by Moores Law. The software developments are timely, ...

D. E. Asumu; J. Mellis

1998-10-01T23:59:59.000Z

243

Neural network based optimal control of HVAC&R systems.  

E-Print Network (OSTI)

??Heating, Ventilation, Air-Conditioning and Refrigeration (HVAC&R) systems have wide applications in providing a desired indoor environment for different types of buildings. It is well acknowledged (more)

Ning, Min

2008-01-01T23:59:59.000Z

244

EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline Systems  

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

Interstate Pipelines Table Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Thirty Largest U.S. Interstate Natural Gas Pipeline Systems, 2008 (Ranked by system capacity) Pipeline Name Market Regions Served Primary Supply Regions States in Which Pipeline Operates Transported in 2007 (million dekatherm)1 System Capacity (MMcf/d) 2 System Mileage Columbia Gas Transmission Co. Northeast Southwest, Appalachia DE, PA, MD, KY, NC, NJ, NY, OH, VA, WV 1,849 9,350 10,365 Transcontinental Gas Pipeline Co. Northeast, Southeast Southwest AL, GA, LA, MD, MS, NC, NY, SC, TX, VA, GM 2,670 8,466 10,450 Northern Natural Gas Co. Central, Midwest Southwest IA, IL, KS, NE, NM, OK, SD, TX, WI, GM 1,055 7,442 15,874 Texas Eastern Transmission Corp.

245

Barriers to a Wide-Area Trusted Network Early Warning System For Electric  

E-Print Network (OSTI)

It is apparent that perturbations of the North American electric power grid follow the patterns and characteristics of Self Organized Critical (SOC) systems. Published studies show SOC systems exhibit statistical properties that may result in early warning systems predicting electric power instability and loss of reliability. However, in order for such an early warning system to exist, a trusted wide-area data network must collate information from disparate subsystems and compile that information into homogenous data records for input to a modeling system. This paper explores similarities between widearea trusted computer networks and the needs of a widearea trusted network early warning system for electric power instability. An analysis of commercial equipment used in power stations uncovers disparate access methods and protocols that inhibit interoperability, and yet that problem has been mitigated in computer networking. Recent advances lend hope that wide-area data collection and modeling of electric power system perturbations will be commonplace in the not to distant future. I. Modeling Disturbance Data The electric power grid can be modeled as a complex system of dynamic load and generation balances characterized by two types of stability. Steady-state stability describes the nominal balancing of relatively minor disturbances in load/generation fluctuations caused by normal start-up and shut-down events associated with the millions of appliances and equipment attached to the grid. Constraints on operating parameters nominally voltage levels, current magnitudes and power flows are used to achieve steady-state equilibrium where the generation input is matched to system losses and electrical outputs. Whereas, transient stability describes the power systems ability (or lack thereof) to absorb major disturbances and return to a relatively balanced steadystate. Load shedding, generation shedding, and regional

Paul W. Oman; Jeff Roberts

2002-01-01T23:59:59.000Z

246

Network Upgrade for the SLC: Control System Modifications  

SciTech Connect

Current communications between the SLAC Linear Collider control system central host and the SLCmicros is built upon the SLAC developed SLCNET communication hardware and protocols. We will describe how the Internet Suite of protocols (TCP/IP) are used to replace the SLCNET protocol interface. The major communication pathways and their individual requirements are described. A proxy server is used to reduce the number of total system TCP/IP connections. The SLCmicros were upgraded to use Ethernet and TCP/IP as well as SLCNET. Design choices and implementation experiences are addressed.

Crane, M.; Mackenzie, R.; Sass, R.; Himel, T.; /SLAC

2011-09-09T23:59:59.000Z

247

Network of Excellence in Distributed and Dependable Computing Systems  

E-Print Network (OSTI)

This document presents a CaberNet vision of Research and Technology Development (RTD) in Distributed and Dependable systems. It takes as a basis the state-of-the-art (SOTA) Report prepared by John Bates in 1998: this document was commissioned by CaberNet as a first step towards the definition of a roadmap for European research in distributed and dependable systems. This report overviewed the developments in the main areas to which the CaberNet members made outstanding contributions, which were the most important at the time of its preparation, and analysed the most important trends in R&D in those areas

Alexander Romanovsky (ed); Edited Alexander Romanovsky

2004-01-01T23:59:59.000Z

248

A Benchmarking Platform For Network-On-Chip (NOC) Multiprocessor System-On- Chips  

E-Print Network (OSTI)

Network-on-Chip (NOC) based designs have garnered significant attention from both researchers and industry over the past several years. The analysis of these designs has focused on broad topics such as NOC component micro-architecture, fault-tolerant communication, and system memory architecture. Nonetheless, the design of lowlatency, high-bandwidth, low-power and area-efficient NOC is extremely complex due to the conflicting nature of these design objectives. Benchmarks are an indispensable tool in the design process; providing thorough measurement and fair comparison between designs in order to achieve optimal results (i.e performance, cost, quality of service). This research proposes a benchmarking platform called NoCBench for evaluating the performance of Network-on-chip. Although previous research has proposed standard guidelines to develop benchmarks for Network-on-Chip, this work moves forward and proposes a System-C based simulation platform for system-level design exploration. It will provide an initial set of synthetic benchmarks for on-chip network interconnection validation along with an initial set of standardized processing cores, NOC components, and system-wide services. The benchmarks were constructed using synthetic applications described by Task Graphs For Free (TGFF) task graphs extracted from the E3S benchmark suite. Two benchmarks were used for characterization: Consumer and Networking. They are characterized based on throughput and latency. Case studies show how they can be used to evaluate metrics beyond throughput and latency (i.e. traffic distribution). The contribution of this work is two-fold: 1) This study provides a methodology for benchmark creation and characterization using NoCBench that evaluates important metrics in NOC design (i.e. end-to-end packet delay, throughput). 2) The developed full-system simulation platform provides a complete environment for further benchmark characterization on NOC based MpSoC as well as system-level design space exploration.

Malave-Bonet, Javier

2010-12-01T23:59:59.000Z

249

An approach to increase the scalability of location systems in WLAN networks  

Science Conference Proceedings (OSTI)

This paper presents a software layer designed to reduce the consumption of network resources and, at the same time, the amount of location traffic being carried by indoor location systems that are able to use a variety of location techniques. This new ... Keywords: A-GPS, WiFi fingerprinting, indoor location, location middleware

Israel Martin-Escalona; Francisco Barcelo-Arroyo

2008-02-01T23:59:59.000Z

250

System architecture modeling of an UWB receiver for wireless sensor network  

Science Conference Proceedings (OSTI)

This paper presents a method for system architecture modeling of an IR-UWB (Impulse Radio Ultra WideBand) receiver for sensors networks applications. We expose the way for designing an FPGA (Field Programmable Gate Array) receiver starting from a previous ...

Aubin Lecointre; Daniela Dragomirescu; Robert Plana

2007-07-01T23:59:59.000Z

251

Design and analysis of an adaptive object replication algorithm in distributed network systems  

Science Conference Proceedings (OSTI)

In this paper, we propose an adaptive object replication algorithm for distributed network systems, analyze its performance from both theoretical and experimental standpoints. We first present a mathematical cost model that considers all the costs associated ... Keywords: Allocation scheme, Communication cost, Competitive analysis, I/O cost, Object replication

Lin Wujuan; Bharadwaj Veeravalli

2008-06-01T23:59:59.000Z

252

Joint optimization algorithm for network reconfiguration and reactive power control of wind farm in distribution system  

Science Conference Proceedings (OSTI)

In recent years, the number of small size wind farms used as DG sources located within the distribution system are rapidly increasing. Wind farm made up with doubly fed induction generators (DFIG) is proposed in this paper as the continuous reactive ... Keywords: DFIG wind turbine, network reconfiguration, particle swarm optimization, reactive power control, wind farm

Jingjing Zhao; Xin Li; Jiping Lu; Congli Zhang

2009-02-01T23:59:59.000Z

253

Prediction analysis of a wastewater treatment system using a Bayesian network  

Science Conference Proceedings (OSTI)

Wastewater treatment is a complicated dynamic process, the effectiveness of which is affected by microbial, chemical, and physical factors. At present, predicting the effluent quality of wastewater treatment systems is difficult because of complex biological ... Keywords: Bayesian network, Inference, Modified sequencing batch reactor, Prediction analysis

Dan Li; Hai Zhen Yang; Xiao Feng Liang

2013-02-01T23:59:59.000Z

254

Improving security applications using indoor location systems on wireless sensor networks  

Science Conference Proceedings (OSTI)

One of the fields in which companies are investing more money is security, either personal security to avoid industrial accidents or security against intrusions. There is also the huge effort that the scientific community is doing developing all required ... Keywords: IEEE 802.15.4, ILS, indoor location systems, security applications, wireless sensor networks

Josep Paradells; Jordi Vilaseca; Jordi Casademont

2009-01-01T23:59:59.000Z

255

LARS: a locally aware reputation system for mobile ad hoc networks  

Science Conference Proceedings (OSTI)

Mobile ad hoc networks (MANETs) have nodes that are dynamically and arbitrarily located. The nodes are often battery powered and may behave selfishly to preserve power. A promising mechanism to deal with node selfishness is to use reputation methods. ... Keywords: MANET, reputation systems, selfishness, trust, virtual currency schemes

Jiangyi Hu; Mike Burmester

2006-03-01T23:59:59.000Z

256

A High Performance Computing Network and System Simulator for the Power Grid: NGNS^2  

SciTech Connect

Designing and planing next generation power grid sys- tems composed of large power distribution networks, monitoring and control networks, autonomous generators and consumers of power requires advanced simulation infrastructures. The objective is to predict and analyze in time the behavior of networks of systems for unexpected events such as loss of connectivity, malicious attacks and power loss scenarios. This ultimately allows one to answer questions such as: What could happen to the power grid if .... We want to be able to answer as many questions as possible in the shortest possible time for the largest possible systems. In this paper we present a new High Performance Computing (HPC) oriented simulation infrastructure named Next Generation Network and System Simulator (NGNS2 ). NGNS2 allows for the distribution of a single simulation among multiple computing elements by using MPI and OpenMP threads. NGNS2 provides extensive configuration, fault tolerant and load balancing capabilities needed to simulate large and dynamic systems for long periods of time. We show the preliminary results of the simulator running approximately two million simulated entities both on a 64-node commodity Infiniband cluster and a 48-core SMP workstation.

Villa, Oreste; Tumeo, Antonino; Ciraci, Selim; Daily, Jeffrey A.; Fuller, Jason C.

2012-11-11T23:59:59.000Z

257

Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems  

Science Conference Proceedings (OSTI)

It is my great pleasure to welcome you to the 10th ACM Conference on Embedded Networked Sensor Systems (SenSys 2012). This year, we are celebrating the 10th year of this very successful conference, and it is a privilege to host you in Toronto, first ...

Rasit Eskicioglu; Andrew Campbell; Koen Langendoen

2012-11-01T23:59:59.000Z

258

Designing cost-efficient wireless sensor/actuator networks for building control systems  

Science Conference Proceedings (OSTI)

A modern Building Automation System (BAS) aims to enhance the functionality of interactive control strategies leading towards energy efficiency and enhanced user comfort. Typically, it is cheaper to embed the BAS within a Wireless Sensor/Actuator Network ... Keywords: MPC, building energy, co-design, sensor

Alie El-Din Mady; Gregory Provan; Ning Wei

2012-11-01T23:59:59.000Z

259

A novel recurrent neural network-based prediction system for option trading and hedging  

Science Conference Proceedings (OSTI)

In order to reduce their exposure to the erratic fluctuations of the financial markets, traders are nowadays increasingly dealing with options and other derivative securities instead of directly trading in the underlying assets. This paradigm shift ... Keywords: Computational finance, Hedging system, Option trading, Recurrent neural network

C. Quek; M. Pasquier; N. Kumar

2008-10-01T23:59:59.000Z

260

Novel optical-fiber network management system in central office using RFID and LED navigation technologies  

Science Conference Proceedings (OSTI)

Optical IP services such as FTTH have been growing rapidly, leading to an urgent need to manage the optical fiber network from the central office. We have developed an optical-fiber distribution facility called an IDM. However, the changing FTTH environment ... Keywords: FTTH, RFID, automatic navigation system, human error

Masaki Waki; Shigenori Uruno; Yoshitaka Enomoto; Yuji Azuma

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Design and implementation of an intelligent end-to-end network QoS system  

Science Conference Proceedings (OSTI)

End-to-End guaranteed network QoS is a requirement for predictable data transfers between geographically distant end-hosts. Existing QoS systems, however, do not have the capability/intelligence to decide what resources to reserve and which paths to ...

Sushant Sharma; Dimitrios Katramatos; Dantong Yu; Li Shi

2012-11-01T23:59:59.000Z

262

Context-aware remote healthcare support system based on overlay network  

Science Conference Proceedings (OSTI)

Many countries are facing an ever-growing need to supply constant care and support for their disabled and elderly populations. So the importance to remote monitoring is becoming essential for looking after them. With an environment full of smart and ... Keywords: adaptive context aware, multi-agent system, overlay networks, security, ubiquitous healthcare

Debasish Chakraborty; Hideyuki Takahashi; Takuo Suganuma; Atsushi Takeda; Gen Kitagata; Kazuo Hashimoto; Norio Shiratori

2008-09-01T23:59:59.000Z

263

Research and design of meter reading system based on ZigBee wireless sensor network  

Science Conference Proceedings (OSTI)

With the rapid development of wireless technologies, it is possible for Chinese automatic meter reading system (AMRS) to be equipped with wireless sensor networks due to their low-cost, simplicity and mobility. In the current study, we compared the advantages ... Keywords: IEEE802.15.4, JN5121, ZigBee, profile, wireless meter reading

Dechao Sun; Shaohua Zheng

2009-01-01T23:59:59.000Z

264

Sliding mode control of a hydrocarbon degradation in biopile system using recurrent neural network model  

Science Conference Proceedings (OSTI)

This paper proposes the use of a Recurrent Neural Network (RNN) for modeling a hydrocarbon degradation process carried out in a biopile system. The proposed RNN model represents a Kalman-like filter and it has seven inputs, five outputs and twelve neurons ...

Ieroham Baruch; Carlos-Roman Mariaca-Gaspar; Israel Cruz-Vega; Josefina Barrera-Cortes

2007-11-01T23:59:59.000Z

265

A Passive Measurement System for Network Charles Thomas, Joel Sommers, Paul Barford, Dongchan Kim, Ananya Das,  

E-Print Network (OSTI)

called GIMS. The system enables users to specify and centrally man- age packet capture on a set of different testbed types have been well documented, the utility of each depends directly on the ability to gather measurements from the infrastructure. Measurements in network testbeds can be broken into two

Crovella, Mark

266

Simulation of an electrical network and control system in SysML  

Science Conference Proceedings (OSTI)

Modeling of the electrical grid is normally done using bespoke or custom tools and programs rather than generic modeling languages. This requires the engineer to develop the complete simulation system from scratch. In addition, it is difficult to model ... Keywords: MBSE, SysML, electrical network, executable models, interfaces, simulation

Matthew Hause; James Hummell

2012-03-01T23:59:59.000Z

267

Ubiquitous systems and the family: thoughts about the networked home  

Science Conference Proceedings (OSTI)

Developments in ubiquitous and pervasive computing herald a future in which computation is embedded into our daily lives. Such a vision raises important questions about how people, especially families, will be able to engage with and trust such systems ... Keywords: privacy, social interaction, the family, trust, ubiquitous computing

Linda Little; Elizabeth Sillence; Pam Briggs

2009-07-01T23:59:59.000Z

268

Systems chemistry: using thermodynamically controlled networks to assess molecular similarity  

E-Print Network (OSTI)

the structure of the molecule. While binding by a single receptor will provide only very limited informa- tion, a more comprehensive description of the molecular structure may be obtainable by using a systems chemis- try [19-24] approach, utilising the binding...

Saggiomo, Vittorio; Hristova, Yana R; Ludlow, R Frederick; Otto, Sijbren

2013-02-12T23:59:59.000Z

269

Fault-tolerant battery system employing intra-battery network architecture  

DOE Patents (OSTI)

A distributed energy storing system employing a communications network is disclosed. A distributed battery system includes a number of energy storing modules, each of which includes a processor and communications interface. In a network mode of operation, a battery computer communicates with each of the module processors over an intra-battery network and cooperates with individual module processors to coordinate module monitoring and control operations. The battery computer monitors a number of battery and module conditions, including the potential and current state of the battery and individual modules, and the conditions of the battery's thermal management system. An over-discharge protection system, equalization adjustment system, and communications system are also controlled by the battery computer. The battery computer logs and reports various status data on battery level conditions which may be reported to a separate system platform computer. A module transitions to a stand-alone mode of operation if the module detects an absence of communication connectivity with the battery computer. A module which operates in a stand-alone mode performs various monitoring and control functions locally within the module to ensure safe and continued operation.

Hagen, Ronald A. (Stillwater, MN); Chen, Kenneth W. (Fair Oaks, CA); Comte, Christophe (Montreal, CA); Knudson, Orlin B. (Vadnais Heights, MN); Rouillard, Jean (Saint-Luc, CA)

2000-01-01T23:59:59.000Z

270

Prediction of the index fund by Takagi-Sugeno fuzzy inference systems and feed-forward neural network  

Science Conference Proceedings (OSTI)

The paper presents (on the basis of passive investment strategies analysis) the design of the Takagi-Sugeno fuzzy inference system and the feed-forward neural network (with pre-processing of inputs time series) for prediction of the index fund. By means ... Keywords: Takagi-Sugeno fuzzy inference systems, feed-forward neural network, index fund, indicators of technical analysis, prediction

Vladr Olej

2006-02-01T23:59:59.000Z

271

Control of synchronization in coupled neural systems by time-delayed feedback  

E-Print Network (OSTI)

We discuss the synchronization of coupled neurons which are modelled as FitzHugh-Nagumo systems. As smallest entity in a larger network, we focus on two diffusively coupled subsystems, which can be interpreted as two mutually interacting neural populations. Each system is prepared in the excitable regime and subject to independent random fluctuations. In order to modify their cooperative dynamics, we apply a local external stimulus in form of an extended time-delayed feedback loop that involves multiple delays weighted by a memory parameter and investigate if local control applied to a subsystem can allow one to steer the global cooperative dynamics. Depending on the choice of this new control parameter, we investigate different measures to quantify the influence on synchronization: ratio of interspike intervals, power spectrum, interspike interval distribution, and phase synchronization intervals. We show that the control method is more robust for increasing memory parameter.

Philipp Hoevel; Markus A. Dahlem; Eckehard Schoell

2008-09-04T23:59:59.000Z

272

Intelligent Control via Wireless Sensor Networks for Advanced Coal Combustion Systems  

SciTech Connect

Numerical Modeling of Solid Gas Flow, System Identification for purposes of modeling and control, and Wireless Sensor and Actor Network design were pursued as part of this project. Time series input-output data was obtained from NETL's Morgantown CFB facility courtesy of Dr. Lawrence Shadle. It was run through a nonlinear kernel estimator and nonparametric models were obtained for the system. Linear and first-order nonlinear kernels were then utilized to obtain a state-space description of the system. Neural networks were trained that performed better at capturing the plant dynamics. It is possible to use these networks to find a plant model and the inversion of this model can be used to control the system. These models allow one to compare with physics based models whose parameters can then be determined by comparing them against the available data based model. On a parallel track, Dr. Kumar designed an energy-efficient and reliable transport protocol for wireless sensor and actor networks, where the sensors could be different types of wireless sensors used in CFB based coal combustion systems and actors are more powerful wireless nodes to set up a communication network while avoiding the data congestion. Dr. Ahmadi's group studied gas solid flow in a duct. It was seen that particle concentration clearly shows a preferential distribution. The particles strongly interact with the turbulence eddies and are concentrated in narrow bands that are evolving with time. It is believed that observed preferential concentration is due to the fact that these particles are flung out of eddies by centrifugal force.

Aman Behal; Sunil Kumar; Goodarz Ahmadi

2007-08-05T23:59:59.000Z

273

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

274

Metering, Network, in the Field Operations, and Information System (MENOFIS) Platform  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) IntelliGrid Project Set 161D (Infrastructure for Smart Customer Interface) includes an element of tracking and reporting regarding work that is happening in utility laboratories. The MENOFIS (Metering, Network, in the Field Operations, and Information System) platform is an example of such work at Elctricite de France (EdF) RD aimed at testing technological aspects of three research and demonstration (RD) projects of the Measurement and Information System for ...

2011-09-29T23:59:59.000Z

275

Using VMware VCenter lab manager in undergraduate education for system administration and network security  

Science Conference Proceedings (OSTI)

We have developed and managed a virtual laboratory environment by deploying the VMware vCenter Lab Manager and the VMware vSphere vCenter on a load-balanced cluster of eight ESX 3.5 servers and a storage area network of 10.8 Tera bytes. This system has ... Keywords: education, hands-on, lab manager, laboratory experiments, system administration, virtualization

Xinli Wang; Guy C. Hembroff; Rick Yedica

2010-10-01T23:59:59.000Z

276

A privacy preservation model for Facebook-style social network systems  

E-Print Network (OSTI)

Recent years have seen unprecedented growth in the popularity of social network systems, with Facebook being an archetypical example. The access control paradigm behind the privacy preservation mechanism of Facebook is distinctly different from such existing access control paradigms as Discretionary Access Control, Role-Based Access Control, Capability Systems, and Trust Management Systems. This work takes a first step in deepening the understanding of this access control paradigm, by proposing an access control model that formalizes and generalizes the privacy preservation mechanism of Facebook. The model can be instantiated into a family of Facebook-style social network systems, each with a recognizably different access control mechanism, so that Facebook is but one instantiation of the model. We also demonstrate that the model can be instantiated to express policies that are not currently supported by Facebook but possess rich and natural social significance. This work thus delineates the design space of privacy preservation mechanisms for Facebook-style social network systems, and lays out a formal framework for policy analysis in these systems.

Philip W. L. Fong; Mohd Anwar; Zhen Zhao

2009-01-01T23:59:59.000Z

277

Networked alpha and gamma spectral acquisition and analysis system  

SciTech Connect

This manual assumes a knowledge of (terminology used and a working familiarity with) the windowing system and mouse of the Sun computer workstation. See the appropriate Sun manuals for additional information. ALDO, the alpha detector control program, is used to control, monitor, and edit log information associated with the collection of alpha spectra. Actual data collection and control functions are performed by Mizar Real-Time computers for which ALDO acts as a friendly user command interface and status display. It is normally started as part of your login procedure, but may also be started from the ``NETSPEC Utilities`` submenu of the root menu. The root menu is obtained by pushing the right mouse button when the cursor is over the root window (background picture). To become a user of ALDO and the other programs in the NETSPEC system, contact the person who performs systems administration tasks for the Sun computers. Most user interaction with ALDO is by means of mouse manipulation of screen items such as buttons, checkboxes, and sliders. The action of pushing the left mouse button when the cursor is over an item is called selecting that item. The left mouse button is therefore called the select button. The right mouse button is the menu button because a limited number of options may be displayed when that button is pressed when the cursor is over an item with a triangle (inverted delta). In this document, names of selectable items are printed in bold when they are first mentioned or when emphasis is helpful. In general, items which do not apply to the current context are either disabled or made invisible in order to prevent selection.

Wilcox, C.M.; Gross, J.M.

1993-10-01T23:59:59.000Z

278

The electric delivery system-a complex network of transmission and distribu  

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

electric delivery system-a complex network of transmission and distribu- electric delivery system-a complex network of transmission and distribu- tion lines, substations, and electrical components-is aging. To deliver more electricity and ensure reliability, the grid needs to be modernized. As the grid is being upgraded, it is also being challenged by increased needs to integrate variable renewable energy resources such as solar and wind, the potential growth of electric vehicles and related charging infrastructure, and the potential development of new electricity market designs and operating practices. To help decision makers better understand how these changes and challenges are shaping electricity delivery systems, as well as provide the industry with the tools necessary to cope with the new designs, the Reliability and Markets activ-

279

Study of a Fault Analysis System for a Heat Supply Network Based on GIS  

E-Print Network (OSTI)

Conventional methods cannot satisfy the request of the layout and operation management in a heating system. The geographical information system (GIS) in a heat supply network can realize information conformity and information share roundly, which makes management of information improve to a new level in district heating. When fault of the heat supply network occurs, the traditional methods make fault reaction time long and the efficiency low, and enlarge the fault harm. The system of fault analysis in a heat supply network based on GIS mainly simulates and calculates according to various fault conditions. By selection of valve shut-off schemes in fault conditions and simulation of various fault conditions, the fault treatment scheme can be optimized. The results of simulation can be shown in the GIS graphics with the aid of advanced image display function of GIS. The application of this system brings great significance to heating system on the management enhancing, fault number-reducing, quick decision-making and influence area diminishing in case of fault.

Zou, P.; Liu, M.; Tang, H.; Wang, X.; Li, N.; Wang, W.

2006-01-01T23:59:59.000Z

280

Examining Food Risk in the Large using a Complex, Networked System-of-sytems Approach  

SciTech Connect

The food production infrastructure is a highly complex system of systems. Characterizing the risks of intentional contamination in multi-ingredient manufactured foods is extremely challenging because the risks depend on the vulnerabilities of food processing facilities and on the intricacies of the supply-distribution networks that link them. A pure engineering approach to modeling the system is impractical because of the overall system complexity and paucity of data. A methodology is needed to assess food contamination risk 'in the large', based on current, high-level information about manufacturing facilities, corrunodities and markets, that will indicate which food categories are most at risk of intentional contamination and warrant deeper analysis. The approach begins by decomposing the system for producing a multi-ingredient food into instances of two subsystem archetypes: (1) the relevant manufacturing and processing facilities, and (2) the networked corrunodity flows that link them to each other and consumers. Ingredient manufacturing subsystems are modeled as generic systems dynamics models with distributions of key parameters that span the configurations of real facilities. Networks representing the distribution systems are synthesized from general information about food corrunodities. This is done in a series of steps. First, probability networks representing the aggregated flows of food from manufacturers to wholesalers, retailers, other manufacturers, and direct consumers are inferred from high-level approximate information. This is followed by disaggregation of the general flows into flows connecting 'large' and 'small' categories of manufacturers, wholesalers, retailers, and consumers. Optimization methods are then used to determine the most likely network flows consistent with given data. Vulnerability can be assessed for a potential contamination point using a modified CARVER + Shock model. Once the facility and corrunodity flow models are instantiated, a risk consequence analysis can be performed by injecting contaminant at chosen points in the system and propagating the event through the overarching system to arrive at morbidity and mortality figures. A generic chocolate snack cake model, consisting of fluid milk, liquid eggs, and cocoa, is described as an intended proof of concept for multi-ingredient food systems. We aim for an eventual tool that can be used directly by policy makers and planners.

Ambrosiano, John [Los Alamos National Laboratory; Newkirk, Ryan [U OF MINNESOTA; Mc Donald, Mark P [VANDERBILT U

2010-12-03T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Development of Analytical and Computational Methods for the Strategic Power Infrastructure Defense (SPID) System: EPRI/DoD Complex I nteractive Networks/Systems Initiative: Second Annual Report  

Science Conference Proceedings (OSTI)

This report details the second-year research accomplishments for one of six research consortia established under the Complex Interactive Networks/Systems Initiative. This particular document discusses analytical and computational methods for the Strategic Power Infrastructure Defense (SPID) System.

2001-06-21T23:59:59.000Z

282

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

283

Cognitive Multiple Access Network with Outage Margin in the Primary System  

E-Print Network (OSTI)

This paper investigates the problem of spectrally efficient operation of a multiuser uplink cognitive radio system in the presence of a single primary link. The secondary system applies opportunistic interference cancelation (OIC) and decode the primary signal when such an opportunity is created. We derive the achievable rate in the secondary system when OIC is used. This scheme has a practical significance, since it enables rate adaptation without requiring any action from the primary system. The \\emph{exact} expressions for outage probability of the primary user are derived, when the primary system is exposed to interference from secondary users. Moreover, approximated formulas and tight lower and upper bounds for the ergodic sum-rate capacity of the secondary network are found. Next, the power allocation is investigated in the secondary system for maximizing the sum-rate under an outage constraint at the primary system. We formulate the power optimization problem in various scenarios depending on the avail...

Maham, Behrouz; Zhou, Xiangyun; Hjrungnes, Are

2011-01-01T23:59:59.000Z

284

Service Oriented Architecture in Network Security - a novel Organisation in Security Systems  

E-Print Network (OSTI)

Current network security systems are a collection of various security components, which are directly installed in the operating system. These check the whole node for suspicious behaviour. Armouring intrusions e.g. have the ability to hide themselves from being checked. We present in this paper an alternative organisation of security systems. The node is completely virtualized with current virtualization systems so that the operating system with applications and the security system is distinguished. The security system then checks the node from outside and the right security components are provided through a service oriented architecture. Due to the running in a virtual machine, the infected nodes can be halted, duplicated, and moved to other nodes for further analysis and legal aspects. This organisation is in this article analysed and a preliminary implementation showing promising results are discussed.

Hilker, Michael

2008-01-01T23:59:59.000Z

285

System and method for knowledge based matching of users in a network  

DOE Patents (OSTI)

A knowledge-based system and methods to matchmaking and social network extension are disclosed. The system is configured to allow users to specify knowledge profiles, which are collections of concepts that indicate a certain topic or area of interest selected from an. The system utilizes the knowledge model as the semantic space within which to compare similarities in user interests. The knowledge model is hierarchical so that indications of interest in specific concepts automatically imply interest in more general concept. Similarity measures between profiles may then be calculated based on suitable distance formulas within this space.

Verspoor, Cornelia Maria (Santa Fe, NM); Sims, Benjamin Hayden (Los Alamos, NM); Ambrosiano, John Joseph (Los Alamos, NM); Cleland, Timothy James (Los Alamos, NM)

2011-04-26T23:59:59.000Z

286

Global generalized synchronization in networks of different time-delay systems  

E-Print Network (OSTI)

We show that global generalized synchronization (GS) exists in structurally different time-delay systems, even with different orders, with quite different fractal (Kaplan-Yorke) dimensions, which emerges via partial GS in symmetrically coupled regular networks. We find that there exists a smooth transformation in such systems, which maps them to a common GS manifold as corroborated by their maximal transverse Lyapunov exponent. In addition, an analytical stability condition using the Krasvoskii-Lyapunov theory is deduced. This phenomenon of GS in strongly distinct systems opens a new way for an effective control of pathological synchronous activity by means of extremely small perturbations to appropriate variables in the synchronization manifold.

D. V. Senthilkumar; R. Suresh; M. Lakshmanan; J. Kurths

2013-01-31T23:59:59.000Z

287

Thermal performance of space-cooling solar-energy systems in the National Solar Data Network  

DOE Green Energy (OSTI)

Results derived from analysis of data obtained from monitoring the operation of four solar energy cooling installations in the National Solar Data Network are presented. It is shown that chiller coefficients of performance (COP) on the order of 0.65 can be easily obtained with existing technology, provided the designer adequately matches the solar energy system to the absorption chiller. It is also shown that flat-plate, concentrating, and evacuated tube collectors may each be used successfully to operate absorption chillers in space cooling systems. The results show that appreciation for the systems engineering aspects of solar energy is extremely important to the development of a viable industry.

Bartlett, J.C.

1979-07-01T23:59:59.000Z

288

Optimal Sizing of Energy Storage System in Solar Energy Electric Vehicle Using Genetic Algorithm and Neural Network  

Science Conference Proceedings (OSTI)

Owing to sun's rays distributing randomly and discontinuously and load fluctuation, energy storage system is very important in Solar Energy Electric Vehicle (SEEV). The combinatorial optimization by genetic algorithm and neural network was used to optimize ... Keywords: battery flywheel, genetic algorithm, neural network

Shiqiong Zhou; Longyun Kang; Miaomiao Cheng; Binggang Cao

2009-11-01T23:59:59.000Z

289

A network hierarchical feedback system for Taiwanese universities based on the integration of total quality management and innovation  

Science Conference Proceedings (OSTI)

An increasing number of Taiwanese universities are improving operational performance through innovation and total quality management (TQM). In addition, the National Quality Award (NQA), which is based on TQM, is now used to evaluate quality performance ... Keywords: Decision-making trial and evaluation laboratory (DEMATEL), Fuzzy analytical hierarchical process (FAHP), Fuzzy analytical network process (FANP), Gray relational analysis (GRA), Network hierarchical feedback system (NHFS)

Jui-Kuei Chen; I-Shuo Chen

2012-08-01T23:59:59.000Z

290

Balanced Decomposition for Power System Simulation on Parallel Computers  

E-Print Network (OSTI)

Balanced Decomposition for Power System Simulation on Parallel Computers Felipe Morales, Hugh parallelization strategy is tested in a Parsytec computer incorpo- rating two PowerXplorer systems, each one System. 1 Introduction Power system analysis is intensive in computational terms 1 . In fact, the power

Rudnick, Hugh

291

Resource management algorithms for real-time wireless sensor networks with applications in cyber-physical systems  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSN) are playing a key role in the efficient operation of Cyber Physical Systems (CPS). They provide cost efficient solutions to current and future CPS requirements such as real-time structural awareness, faster event localization, ...

Benazir Fateh / Manimaran Govindarasu

2013-01-01T23:59:59.000Z

292

Comparative performance of solar heating systems in the national solar data network  

Science Conference Proceedings (OSTI)

This paper presents an overview of the National Solar Data Network (NSDN). The NSDN consists of instrumented solar energy systems in buildings selected as part of the National Solar Heating and Demonstration Program. For the past five years data has been obtained on a 24-hour basis. The purpose of the NSDN is to assist in the development of solar technologies for buildings by providing data and information on the effectiveness of particular solar technologies and the areas of improvement. This paper presents the most recent composite results of analysis performed by Vitro Laboratories of solar space heating data for active sites in the National Solar Data Network (NSDN). The results presented have been developed on the basis of analysis of instrumented sites maintained through the 1981-1982 heating season.

Rossi, S.M.

1983-06-01T23:59:59.000Z

293

WebTrafMon: Web-based Internet/Intranet network traffic monitoring and analysis system  

Science Conference Proceedings (OSTI)

As enterprise computing environments become more network-oriented, the importance of network traffic monitoring and analysis intensifies. Most existing traffic monitoring and analysis tools focus on measuring the traffic loads of individual network segments. ... Keywords: Enterprise network management, Network traffic monitoring and analysis, Traffic management, Traffic type and source analysis, Web-based management

J. W. -K Hong; S.-S Kwon; J.-Y Kim

1999-09-01T23:59:59.000Z

294

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

295

Prediction of solubility of gases in polystyrene by Adaptive Neuro-Fuzzy Inference System and Radial Basis Function Neural Network  

Science Conference Proceedings (OSTI)

Adaptive Neuro-Fuzzy Inference System (ANFIS) and Radial Basis Function Neural Network (RBF NN) have been developed for prediction of solubility of various gases in polystyrene. Solubility of butane, isobutene, carbon dioxide, 1,1,1,2-tetrafluoroethane ... Keywords: ANFIS, ANN, ARD, Adaptive Neuro-Fuzzy Inference System (ANFIS), BP, HCFC-142b, HFC-134a, HFC-l52a, MLP, PS, Polystyrene, RBF NN, Radial Basis Function Neural Network (RBF NN), S-L EOS, Solubility

Aboozar Khajeh; Hamid Modarress

2010-04-01T23:59:59.000Z

296

A Torus-Based Hierarchical Optical-Electronic Network-on-Chip for Multiprocessor System-on-Chip  

Science Conference Proceedings (OSTI)

Networks-on-chip (NoCs) are emerging as a key on-chip communication architecture for multiprocessor systems-on-chip (MPSoCs). Optical communication technologies are introduced to NoCs in order to empower ultra-high bandwidth with low power consumption. ... Keywords: Hierarchical architecture, multiprocessor system-on-chip, optical network-on-chip, optical-electronic router, power consumption

Yaoyao Ye; Jiang Xu; Xiaowen Wu; Wei Zhang; Weichen Liu; Mahdi Nikdast

2012-02-01T23:59:59.000Z

297

Green Power Network: Events Archive  

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

Events Events Search Search Help More Search Options Search Site Map RFP Archive Events Archive We post these past events regarding renewable energy generation, renewable energy certificates, and green power as a courtesy to our web site visitors. Unless otherwise noted, the following events and accompanying presentations are neither supported nor endorsed by the U.S. Department of Energy, Green Power Network. Date and Location Event August 20, 2013 Webinar - Including Solar Resources in Green Pricing Programs: Lessons from Leading Programs This webinar explored green pricing programs. Utility product managers Wade Hughes from Sacramento Municipal Utility District and Jennifer Lynn Wright from Tennessee Valley Authority spoke about the rational for modifying the product mix, the process for including more solar, and challenges they faced. SMUD and TVA were recently recognized as the top two programs incorporating solar into their green power supply, using 14.5% and 5.9% solar in 2012, respectively.

298

Short-Term PV Generation System Direct Power Prediction Model on Wavelet Neural Network and Weather Type Clustering  

Science Conference Proceedings (OSTI)

With the increase of the capacity of PV generated systems, how to eliminate the problem caused by the randomness of power output for photovoltaic system becomes more significant. Most of the existing photovoltaic prediction is Based on the solar radiation. ... Keywords: PV generation system, Wavelet neural network, Weather type clustering, Direct prediction

Ying Yang, Lei Dong

2013-08-01T23:59:59.000Z

299

Optimization of an Oil Production System using Neural Networks and Genetic Algorithms Guillermo Jimenez de la C 1,2  

E-Print Network (OSTI)

Abstract This paper proposes an optimization strategy which is based on neural networks and genetic algorithms to calculate the optimal values of gas injection rate and oil rate for oil production system. Two cases are analyzed: a) A single well production system and b) A production system composed by two gaslifted wells. For both cases an objective function is maximized to reduce production cost. The proposed strategy shows the ability of the neural networks to approximate the behavior of an oil production system and the genetic algorithms to solve optimization problems when a mathematical model is not available.

Jose A. Ruz-hernandez; Ruben Salazar M; Evgen Shelomov

2009-01-01T23:59:59.000Z

300

Privacy and Security Research Group workshop on network and distributed system security: Proceedings  

Science Conference Proceedings (OSTI)

This report contains papers on the following topics: NREN Security Issues: Policies and Technologies; Layer Wars: Protect the Internet with Network Layer Security; Electronic Commission Management; Workflow 2000 - Electronic Document Authorization in Practice; Security Issues of a UNIX PEM Implementation; Implementing Privacy Enhanced Mail on VMS; Distributed Public Key Certificate Management; Protecting the Integrity of Privacy-enhanced Electronic Mail; Practical Authorization in Large Heterogeneous Distributed Systems; Security Issues in the Truffles File System; Issues surrounding the use of Cryptographic Algorithms and Smart Card Applications; Smart Card Augmentation of Kerberos; and An Overview of the Advanced Smart Card Access Control System. Selected papers were processed separately for inclusion in the Energy Science and Technology Database.

Not Available

1993-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Analysis methodology for passive heating systems in the NSDN. [National Solar Data Network  

Science Conference Proceedings (OSTI)

The National Solar Data Network (NSDN) has been continuously monitoring the performance of solar energy systems in buildings throughout the country on a 24-hour basis for the past three years. The data collected from this program is analyzed and performance evaluation reports are published monthly and seasonally for each site. The passive systems in the NSDN are instrumented with an average of 90 sensors to measure weather; heat loss and gain, auxiliary energy and electrical energy consumption; operation of windows, doors, vents, and movable insulation, temperatures and relative humidity of the rooms; and surface and gradient temperatures of all thermal storage masses. The sensors are scanned at 30 second or 5 minute intervals continuously. Performance factors are calculated on the scan, hourly, daily, monthly and annual level. The approach to the performance analysis of passive solar heating systems is presented.

Spears, J.W.

1981-01-01T23:59:59.000Z

302

Conceptual Design of a Strategic Power Infrastructure Defense (SPID) System: EPRI/DoD Complex Interactive Networks/Systems Initiativ e; First Annual Report  

Science Conference Proceedings (OSTI)

This report describes research sponsored by EPRI and the Department of Defense for the Initiative on Complex Interactive Networks / Systems. Through this initiative, the Advanced Power Technologies (APT) Consortium has developed a conceptual design of the Strategic Power Infrastructure Defense (SPID) system. This first annual report from the APT Consortium describes hidden failures and how they contribute to catastrophic failures of bulk power systems.

2000-05-24T23:59:59.000Z

303

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

304

System level energy management in networked real-time embedded systems.  

E-Print Network (OSTI)

??Real-time embedded systems play a prominent role in a variety of applications ranging from medical sensors in human body to signaling sensors in war fields. (more)

Gathala, Sudha Anil Kumar

2009-01-01T23:59:59.000Z

305

A comparison of eight solar-driven absorption cooling systems in the National Solar Data Network  

Science Conference Proceedings (OSTI)

Large solar driven cooling systems of the absorption chiller type offer opportunities to apply solar energy to the air conditioning of buildings with the attendant savings in conventional energy resources. Many complex design problems are encountered in the attempt to implement this technology. For instance, the range of readily available solar installation operating temperatures is at the low end of the required range for effective operation of the chillers. A study has been made of eight such systems which were operated in a variety of climates during the 1980 cooling season and instrumented within the National Solar Data Network (NSDN). Presented here are summary results of this study. Considerably more detail on the performance of these systems is contained in the reference along with a brief discussion of absorption chillers and their application in solar designs. The performance of the monitored installations was not very good. Only two systems showed energy savings and they were insignificant considering the size of the buildings. Nevertheless valuable lessons were learned from the study. Each system had some desirable design features. Taking these features together, a projected composite system was posited which would have performed fairly well. Suggestions are presented which should lead to more effective designs for this type of renewable energy application.

Kelly, C.J.; Logee, T.L.

1982-01-01T23:59:59.000Z

306

A heterogeneous parallel system running open mpi on a broadband network of embedded set-top devices  

Science Conference Proceedings (OSTI)

We present a heterogeneous parallel computing system that combines a traditional computer cluster with a broadband network of embedded set-top box (STB) devices. As multiple service operators (MSO) manage millions of these devices across wide geographic ... Keywords: distributed embedded systems, mpi, multiple sequence alignment, multiple service operators, set-top box

Richard Neill; Alexander Shabarshin; Luca P. Carloni

2010-05-01T23:59:59.000Z

307

Integrated use of artificial neural networks and genetic algorithms for problems of alarm processing and fault diagnosis in power systems  

Science Conference Proceedings (OSTI)

This work approaches relative aspects to the alarm processing problem and fault diagnosis in system level, having as purpose filter the alarms generated during a outage and identify the equipment under fault. A methodology was developed using Artificial ... Keywords: alarm processing, fault diagnosis, genetic algorithms, neural network, supervision and control of electrical systems

Paulo Ccero Fritzen; Ghendy Cardoso, Jr.; Joo Montagner Zauk; Adriano Peres De Morais; Ubiratan H. Bezerra; Joaquim A. P. M. Beck

2010-03-01T23:59:59.000Z

308

An integrated safety prognosis model for complex system based on dynamic Bayesian network and ant colony algorithm  

Science Conference Proceedings (OSTI)

In complex industrial system, most of single faults have multiple propagation paths, so any local slight deviation is able to propagate, spread, accumulate and increase through system fault causal chains. It will finally result in unplanned outages and ... Keywords: Ant colony algorithm, Dynamic Bayesian networks, Fault propagation path, Proactive maintenance, Risk evaluation, Safety prognosis

Jinqiu Hu; Laibin Zhang; Lin Ma; Wei Liang

2011-03-01T23:59:59.000Z

309

Hugh Hardy Achievements  

E-Print Network (OSTI)

Jones, project manager; Maya Schali, project architect; JohnMueller, construction architect; Kristina Walker, interiors;Lowenberg, construction architect; Douglas Stebbins, project

2001-01-01T23:59:59.000Z

310

ENGINEERING HOWARD R. HUGHES  

E-Print Network (OSTI)

a solar-powered house that is energy-efficient, affordable, and attractive. ·Every graduating major of Energy Solar Decathlon 2013. Engineering and architecture students will design then build and operate to the future of Las Vegas. Their work is funded by agencies including the National Science Foundation

Hemmers, Oliver

311

Actual versus design performance of solar systems in the National Solar Data Network  

Science Conference Proceedings (OSTI)

This report relates field measured performance to the designer predicted performance. The field measured data was collected by the National Solar Data Network (NSDN) over a period of six years. Data from 25 solar systems was selected from a data pool of some 170 solar systems. The scope of the project extends beyond merely presenting comparisons of data. There is an attempt to provide answers which will move the solar industry forward. As a result of some industry and research workshops, several concerns arose which can be partially allayed by careful study of the NSDN data. These are: What types of failures occurred and why. How good was the design versus actual performance. Why was predicted performance not achieved in the field. Which components should be integrated with a system type for good performance. Since the designs span several years and since design philosophies are quite variable, the measured results were also compared to f-Chart 5.1 results. This comparison is a type of normalization in that all systems are modeled with the same process. An added benefit of this normalization is a further validation of the f-Chart model on a fairly large scale. The systems were modeled using equipment design parameters, measured loads, and f-Chart weather data from nearby cities.

Logee, T.L.; Kendall, P.W.

1984-09-01T23:59:59.000Z

312

Neural Network Modeling of the Lithium/Thionyl Chloride Battery System  

DOE Green Energy (OSTI)

Battery systems have traditionally relied on extensive build and test procedures for product realization. Analytical models have been developed to diminish this reliance, but have only been partially successful in consistently predicting the performance of battery systems. The complex set of interacting physical and chemical processes within battery systems has made the development of analytical models a significant challenge. Advanced simulation tools are needed to more accurately model battery systems which will reduce the time and cost required for product realization. Sandia has initiated an advanced model-based design strategy to battery systems, beginning with the performance of lithiumhhionyl chloride cells. As an alternative approach, we have begun development of cell performance modeling using non-phenomenological models for battery systems based on artificial neural networks (ANNs). ANNs are inductive models for simulating input/output mappings with certain advantages over phenomenological models, particularly for complex systems. Among these advantages is the ability to avoid making measurements of hard to determine physical parameters or having to understand cell processes sufficiently to write mathematical functions describing their behavior. For example, ANN models are also being studied for simulating complex physical processes within the Li/SOC12 cell, such as the time and temperature dependence of the anode interracial resistance. ANNs have been shown to provide a very robust and computationally efficient simulation tool for predicting voltage and capacity output for Li/SOC12 cells under a variety of operating conditions. The ANN modeling approach should be applicable to a wide variety of battery chemistries, including rechargeable systems.

Ingersoll, D.; Jungst, R.G.; O'Gorman, C.C.; Paez, T.L.

1998-10-29T23:59:59.000Z

313

Port-Hamiltonian systems: network modeling and control of nonlinear physical systems  

E-Print Network (OSTI)

T , (6) expressing that the increase in energy of the system is equal to the supplied work (conservation) the total energy. Clearly the matrix J is skew- symmetric, and since J is constant it trivially satisfies center of mass in the absence of gravity. The energy variables are the three components of the body

Schaft, Arjan van der

314

Bayesian Networks and Geographical Information Systems for Environmental Risk Assessment for Oil and Gas Site Development  

E-Print Network (OSTI)

The objective of this work is to develop a Bayesian Network (BN) model to produce environmental risk maps for oil and gas site developments and to demonstrate the models scalability from a point to a collection of points. To reach this objective, a benchmark BN model was formulated as a proof of concept using Aquifers, Ecoregions and Land Use / Land Cover maps as local and independent input variables. This model was then used to evaluate the probabilistic geographical distribution of the Environmental Sensibility of Oil and Gas (O&G) developments for a given study area. A Risk index associated with the development of O&G operation activities based on the spatial environmental sensibility was also mapped. To facilitate the Risk assessment, these input variables (maps) were discretized into three hazard levels: high, moderate and low. A Geographical Information System (GIS) platform was used (ESRI ArcMap 10), to gather, modify and display the data for the analysis. Once the variables were defined and the hazard data was included on feature classes (layer shapefile format), Python 2.6 software was used as the computational platform to calculate the probabilistic state of all the Bayesian Networks variables. This allowed to define Risk scenarios both on prognostic and diagnostic analysis and to measure the impact of changes or interventions in terms of uncertainty. The resulting Python ESRI ArcMap computational script was called BN+GIS, which populated maps describing the spatial variability of the states of the Environmental Sensibility and of the corresponding Risk index. The latter in particular, represents a tool for decision makers to choose the most suitable location for placing a drilling rig, since it integrates three fundamental environmental variables. Also, results show that is possible to back propagate the information from the Environmental Sensibility to define the inherent triggering scenarios (hazard variables). A case of study is presented to illustrate the applicability of the proposed methodology on a specific geographical setting. The Barnett Shale was chosen as a benchmark study area because sufficient information on this region was available, and the importance that it holds on the latest developments of unconventional plays in the country. The main contribution of this work relies in combining Bayesian Networks and GIS to define environmental Risk scenarios that can facilitate decision-making for O&G stakeholders such as land owners, industry operators, regulators and Non-Governmental Organizations (NGOs), before and during the development of a given site.

Varela Gonzalez, Patricia Ysolda

2013-05-01T23:59:59.000Z

315

Vacuum-Pump Control System Using Programmable Logic Controllers on the TCP/IP Network for the 2.5-GeV Storage Ring  

E-Print Network (OSTI)

Vacuum-Pump Control System Using Programmable Logic Controllers on the TCP/IP Network for the 2.5-GeV Storage Ring

Kanaya, N; Maezawa, H; Factory, P

1999-01-01T23:59:59.000Z

316

Position paper: the role of platforms and operating systems in supporting home networks  

Science Conference Proceedings (OSTI)

As researchers look beyond the PC there is increasing interest in developing and deploying sophisticated home networks. Such networks might allow the seamless integration of information and services produced both within the home and externally, enabling ...

Nigel Davies; Pierre-Guillaume Raverdy

2000-09-01T23:59:59.000Z

317

Network coding: an instant primer  

Science Conference Proceedings (OSTI)

Network coding is a new research area that may have interesting applications in practical networking systems. With network coding, intermediate nodes may send out packets that are linear combinations of previously received information. There are two ... Keywords: network coding

Christina Fragouli; Jean-Yves Le Boudec; Jrg Widmer

2006-01-01T23:59:59.000Z

318

Nonlinear system control using self-evolving neural fuzzy inference networks with reinforcement evolutionary learning  

Science Conference Proceedings (OSTI)

This study presents a reinforcement evolutionary learning algorithm (REL) for the self-evolving neural fuzzy inference networks (SENFIN). By applying functional link neural networks (FLNN) as the consequent part of the fuzzy rules, the proposed SENFIN ... Keywords: Cultural algorithm, Neural fuzzy inference network, Particle swarm optimization, Reinforcement learning

Cheng-Jian Lin; Cheng-Hung Chen

2011-12-01T23:59:59.000Z

319

Creativity of student information system projects: From the perspective of network embeddedness  

Science Conference Proceedings (OSTI)

Many companies have pursued innovation to obtain a competitive edge. Thus, educational reform focuses mainly on training creative students. This study adopted the concept of an affiliated network of projects to investigate how project embeddedness influences ... Keywords: Affiliation network, Centrality, Innovation climate, Network embeddedness, Project team creativity

Heng-Li Yang; Hsiu-Hua Cheng

2010-01-01T23:59:59.000Z

320

Mobile network adaptation in the UbiData mobile file system  

Science Conference Proceedings (OSTI)

An important characteristic of mobile networks is the large variations of available bandwidth. Network conditions can vary from strong to weak to total disconnection. These variations may be masked from the users by a common technique called "data hoarding". ... Keywords: data hoarding, mobile computing, mobile data management, mobile network

J. A. Zhang; S. F. Jones; A. S. Helal

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Adapting Legacy Home Appliances to Home Network Systems Using Web Services  

E-Print Network (OSTI)

This paper presents a framework that adapts the conventional home electric appliances with the infrared remote controls (legacy appliances) to the emerging home network system (HNS). The proposed method extensively uses the concept of service-oriented architecture to improve programmable interoperability among multi-vendor appliances. We first prepare APIs that assist a PC to send infrared signals to the appliances. We then aggregate the APIs within self-contained service components, so that each of the component achieves a logical feature independent of device(or vendor)-specific operations. The service components are finally exported to the HNS as Web services. Thus, the legacy appliances can be used as distributed components with open interfaces. To demonstrate the effectiveness, we also implement an actual HNS and integrated services with multi-vendor legacy appliances.

Masahide Nakamura; Akihiro Tanaka; Hiroshi Igaki; Haruaki Tamada; Ken-ichi Matsumoto

2006-01-01T23:59:59.000Z

322

Classification of parameter changes in a dynamic system with the use of wavelet analysis and neural networks  

Science Conference Proceedings (OSTI)

In this paper a neural detector of internal parameter changes in a stationary, non-linear SISO dynamic system is considered. A dynamic system is usually described by an input-output relation or by a set of state equations. Each change of parameter values ... Keywords: Detection of current states of a dynamic system, Discrete wavelet decomposition, Kohonen network, LVQ neural classifier, Time-frequency transforms, Vector quantisation

Ewa Swiercz

2012-03-01T23:59:59.000Z

323

TACO-DTN: A Time-Aware COntent-based dissemination system for Delay Tolerant Networks  

E-Print Network (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate for delay tolerant networks, where a number of nodes act as infostations, enjoying some form of connectivity to the backbone, and other nodes are mobile devices, reachable sometimes only through intermittent connectivity of carriers. Examples of applications benefiting from such a system could be travel information dissemination systems in large cities (exploiting infostations at bus stops) or on highways, advertisements dissemination at specific times, and information dissemination to remote villages. The approach is based on a novel concept of temporal utility of subscriptions and events. The temporal utility is used to govern the routing of the events to the right infostation (i.e., the one reached by the interested subscribers at the right time), avoiding unnecessary information transfer on slow links and the buffer management, in case buffer limitations are an issue. We give a description of our protocol and discuss its validation through simulation.

Mirco Musolesi

2007-01-01T23:59:59.000Z

324

Combined expert system/neural networks method for process fault diagnosis  

DOE Patents (OSTI)

A two-level hierarchical approach for process fault diagnosis of an operating system employs a function-oriented approach at a first level and a component characteristic-oriented approach at a second level, where the decision-making procedure is structured in order of decreasing intelligence with increasing precision. At the first level, the diagnostic method is general and has knowledge of the overall process including a wide variety of plant transients and the functional behavior of the process components. An expert system classifies malfunctions by function to narrow the diagnostic focus to a particular set of possible faulty components that could be responsible for the detected functional misbehavior of the operating system. At the second level, the diagnostic method limits its scope to component malfunctions, using more detailed knowledge of component characteristics. Trained artificial neural networks are used to further narrow the diagnosis and to uniquely identify the faulty component by classifying the abnormal condition data as a failure of one of the hypothesized components through component characteristics. Once an anomaly is detected, the hierarchical structure is used to successively narrow the diagnostic focus from a function misbehavior, i.e., a function oriented approach, until the fault can be determined, i.e., a component characteristic-oriented approach. 9 figs.

Reifman, J.; Wei, T.Y.C.

1995-08-15T23:59:59.000Z

325

Combined expert system/neural networks method for process fault diagnosis  

DOE Patents (OSTI)

A two-level hierarchical approach for process fault diagnosis is an operating system employs a function-oriented approach at a first level and a component characteristic-oriented approach at a second level, where the decision-making procedure is structured in order of decreasing intelligence with increasing precision. At the first level, the diagnostic method is general and has knowledge of the overall process including a wide variety of plant transients and the functional behavior of the process components. An expert system classifies malfunctions by function to narrow the diagnostic focus to a particular set of possible faulty components that could be responsible for the detected functional misbehavior of the operating system. At the second level, the diagnostic method limits its scope to component malfunctions, using more detailed knowledge of component characteristics. Trained artificial neural networks are used to further narrow the diagnosis and to uniquely identify the faulty component by classifying the abnormal condition data as a failure of one of the hypothesized components through component characteristics. Once an anomaly is detected, the hierarchical structure is used to successively narrow the diagnostic focus from a function misbehavior, i.e., a function oriented approach, until the fault can be determined, i.e., a component characteristic-oriented approach.

Reifman, Jaques (Westchester, IL); Wei, Thomas Y. C. (Downers Grove, IL)

1995-01-01T23:59:59.000Z

326

From Power Laws to Power Grids: A Mathematical and Computational Foundation for Complex Interactive Networks: EPRI/DoD Complex Inter active Networks/Systems Initiative: Second Annual Report  

Science Conference Proceedings (OSTI)

This report details the second-year research accomplishments for one of six research consortia established under the Complex Interactive Networks/Systems Initiative. This particular report focuses on understanding the behavior of large-scale complex interactive networks and investigating their mathematical underpinnings.

2001-06-21T23:59:59.000Z

327

Application of the Analytic Hierarchy Process and the Analytic Network Process for the assessment of different wastewater treatment systems  

Science Conference Proceedings (OSTI)

Multicriteria analyses (MCAs) are used to make comparative assessments of alternative projects or heterogeneous measures and allow several criteria to be taken into account simultaneously in a complex situation. The paper shows the application of different ... Keywords: Analytic Hierarchy Process (AHP), Analytic Network Process (ANP), Sustainability assessment, decision support systems (DSS), wastewater treatment (WWT) technologies

Marta Bottero; Elena Comino; Vincenzo Riggio

2011-10-01T23:59:59.000Z

328

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

329

Building a Knowledge Brokering System using social network analysis: A case study of the Korean financial industry  

Science Conference Proceedings (OSTI)

The importance of knowledge is increasing in our global and knowledge-based society. As a part of knowledge management, successful knowledge transfer can improve an organization's competitive advantages and increase an organization's valuable knowledge ... Keywords: Knowledge Brokering System, Knowledge management, Knowledge transfer, Social network analysis

Sungjin Kim; Euiho Suh; Youngjoon Jun

2011-11-01T23:59:59.000Z

330

Abstract--Improvements in transmission and distribution networks can be noticed in most countries that had their system  

E-Print Network (OSTI)

, the National Electricity Regulatory Agency has established that the monthly amount of transmission system usage1 Abstract--Improvements in transmission and distribution networks can be noticed in most one of the biggest challenges is the transmission and distribution open access. In Brazil

Morton, David

331

Temperature decoupling control of double-level air flow field dynamic vacuum system based on neural network and prediction principle  

Science Conference Proceedings (OSTI)

Double-level air flow field dynamic vacuum (DAFDV) system is a strong coupling, large time-delay, and nonlinear multi-input-multi-output system. Decoupling and overcoming the impact of time-delay are two keys to obtain rapid, accurate and independent ... Keywords: ASSAVP, BP, DAFDV, Decoupling control, Double-level air flow field, EBTC, HX, IPSO, MIMO, Neural networks, OIF, PID, Particle swarm optimization, Prediction, RBF, SISO, TITO, WBTC

Li Jinyang; Meng Xiaofeng

2013-04-01T23:59:59.000Z

332

(An Evolution Scheme of the Military Surveillance System Using Wireless Sensor Network)  

E-Print Network (OSTI)

)' , . . , , 24 . , , , UAV(Unmanned Air Vehicle), CCTV Energy-Efficient MAC Protocol for Wireless Sensor Networks," In Proc. ACM Sensys 2003, Nov. 2003. [11] W

333

Formal validation of automated policy refinement in the management of network security systems  

Science Conference Proceedings (OSTI)

Policy hierarchies and automated policy refinement are powerful approaches to simplify administration of security services in complex network environments. A crucial issue for the practical use of these approaches is to ensure the validity of the policy ... Keywords: Formal validation, Model-based management, Network security, Policy based management, Security policies

Joo Porto de Albuquerque; Heiko Krumm; Paulo Lcio de Geus

2010-04-01T23:59:59.000Z

334

MPPT of Solar Energy Generating System with Fuzzy Control and Artificial Neural Network  

Science Conference Proceedings (OSTI)

In order to achieve maximum power of solar cell, we focus on the maximum power point tracking (MPPT) algorithm forming based on fuzzy control. The fuzzy control rules are adopted using artificial neural network with measured data. Compared the fuzzy ... Keywords: Maximum power point tracking, Fuzzy control, artificial neural network, simulation

Keya Huang; Wenshi Li; Xiaoyang Huang

2011-09-01T23:59:59.000Z

335

Short-Wavelength Technology and the Potential For Distributed Networks of Small Radar Systems  

Science Conference Proceedings (OSTI)

Dense networks of short-range radars capable of mapping storms and detecting atmospheric hazards are described. Composed of small X-band (9.4 GHz) radars spaced tens of kilometers apart, these networks defeat the Earth curvature blockage that ...

David McLaughlin; David Pepyne; Brenda Philips; James Kurose; Michael Zink; David Westbrook; Eric Lyons; Eric Knapp; Anthony Hopf; Alfred Defonzo; Robert Contreras; Theodore Djaferis; Edin Insanic; Stephen Frasier; V. Chandrasekar; Francesc Junyent; Nitin Bharadwaj; Yanting Wang; Yuxiang Liu; Brenda Dolan; Kelvin Droegemeier; Jerald Brotzge; Ming Xue; Kevin Kloesel; Keith Brewster; Frederick Carr; Sandra Cruz-Pol; Kurt Hondl; Pavlos Kollias

2009-12-01T23:59:59.000Z

336

Wild-Inspired Intrusion Detection System Framework for High Speed Networks f|p IDS Framework  

Science Conference Proceedings (OSTI)

While the rise of the Internet and the high speed networks made information easier to acquire, faster to exchange and more flexible to share, it also made the cybernetic attacks and crimes easier to perform, more accurate to hit the target victim and ... Keywords: Cybernetic Attacks, Framework, High Speed Network, Intrusion Detection, Monitoring

Hassen Sallay; Mohsen Rouached; Adel Ammar; Ouissem Ben Fredj; Khalid Al-Shalfan; Majdi Ben Saad

2011-10-01T23:59:59.000Z

337

IDRA: A flexible system architecture for next generation wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks consist of embedded devices (sensor nodes), equipped with a low-power radio. They are used for many applications: from wireless building automation to e-health applications. However, due to the limited capabilities of sensor ... Keywords: Architecture, Energy efficiency, Experimental evaluation, Heterogeneity, Mobility, Protocol selection, QoS, Wireless sensor networks

Eli De Poorter; Evy Troubleyn; Ingrid Moerman; Piet Demeester

2011-08-01T23:59:59.000Z

338

Assessment of a New Anemometry System for the Met Offices Moored Buoy Network  

Science Conference Proceedings (OSTI)

Since the late 1980s the Met Office has operated a network of Marine Automatic Weather Stations (MAWS) around the United Kingdom. The network includes a number of instrumented moored buoys, which are mainly in exposed open-ocean locations. The ...

Jon Turton; Charlie Pethica

2010-12-01T23:59:59.000Z

339

nicter: a large-scale network incident analysis system: case studies for understanding threat landscape  

Science Conference Proceedings (OSTI)

We have been developing the Network Incident analysis Center for Tactical Emergency Response (nicter), whose objective is to detect and identify propagating malwares. The nicter mainly monitors darknet, a set of unused IP addresses, to observe global ... Keywords: correlation analysis, malware analysis, network monitoring

Masashi Eto; Daisuke Inoue; Jungsuk Song; Junji Nakazato; Kazuhiro Ohtaka; Koji Nakao

2011-04-01T23:59:59.000Z

340

MultiNoC: A Multiprocessing System Enabled by a Network on Chip  

E-Print Network (OSTI)

The MultiNoC system implements a programmable on-chip multiprocessing platform built on top of an efficient, low area overhead intra-chip interconnection scheme. The employed interconnection structure is a Network on Chip, or NoC. NoCs are emerging as a viable alternative to increasing demands on interconnection architectures, due to the following characteristics: (i) energy efficiency and reliability; (ii) scalability of bandwidth, when compared to traditional bus architectures; (iii) reusability; (iv) distributed routing decisions. An external host computer feeds MultiNoC with application instructions and data. After this initialization procedure, MultiNoC executes some algorithm. After finishing execution of the algorithm, output data can be read back by the host. Sequential or parallel algorithms conveniently adapted to the MultiNoC structure can be executed. The main motivation to propose this design is to enable the investigation of current trends to increase the number of embedded processors in SoCs, l...

Mello, Aline; Calazans, Ney; Moraes, Fernando

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Investigating the effectiveness of many-core network processors for high performance cyber protection systems. Part I, FY2011.  

SciTech Connect

This report documents our first year efforts to address the use of many-core processors for high performance cyber protection. As the demands grow for higher bandwidth (beyond 1 Gbits/sec) on network connections, the need to provide faster and more efficient solution to cyber security grows. Fortunately, in recent years, the development of many-core network processors have seen increased interest. Prior working experiences with many-core processors have led us to investigate its effectiveness for cyber protection tools, with particular emphasis on high performance firewalls. Although advanced algorithms for smarter cyber protection of high-speed network traffic are being developed, these advanced analysis techniques require significantly more computational capabilities than static techniques. Moreover, many locations where cyber protections are deployed have limited power, space and cooling resources. This makes the use of traditionally large computing systems impractical for the front-end systems that process large network streams; hence, the drive for this study which could potentially yield a highly reconfigurable and rapidly scalable solution.

Wheeler, Kyle Bruce; Naegle, John Hunt; Wright, Brian J.; Benner, Robert E., Jr.; Shelburg, Jeffrey Scott; Pearson, David Benjamin; Johnson, Joshua Alan; Onunkwo, Uzoma A.; Zage, David John; Patel, Jay S.

2011-09-01T23:59:59.000Z

342

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

343

The Fennec Automatic Weather Station (AWS) Network: Monitoring the Saharan Climate System  

Science Conference Proceedings (OSTI)

The Fennec automatic weather station (AWS) network consists of eight stations installed across the Sahara, with four in remote locations in the central desert, where no previous meteorological observations have existed. The AWS measures ...

Matthew Hobby; Matthew Gascoyne; John H. Marsham; Mark Bart; Christopher Allen; Sebastian Engelstaedter; Dieh Mohamed Fadel; Abdoulaye Gandega; Richard Lane; James B. McQuaid; Bouziane Ouchene; Abdelkader Ouladichir; Douglas J. Parker; Phil Rosenberg; Mohammed Salah Ferroudj; Azzedine Saci; Fouad Seddik; Martin Todd; Dan Walker; Richard Washington

2013-04-01T23:59:59.000Z

344

Adaptive Inter-System Handover for Heterogeneous RF and IR Networks  

Science Conference Proceedings (OSTI)

Due to the complementary nature of radio and optical wireless (infrared) both in capacity and coverage, the combined use of both for data transmission could have advantages over a single technique. Varying network and traffic conditions put a big challenge ...

Jindong Hou; D. C. O'Brien

2005-04-01T23:59:59.000Z

345

Enabling System-Level Modeling of Variation-Induced Faults in Networks-on-Chip  

E-Print Network (OSTI)

Process Variation (PV) is increasingly threatening the reliability of Networks-on-Chips. Thus, various resilient router designs have been recently proposed and evaluated. However, these evaluations assume random fault ...

Aisopos, Konstantinos

346

Area temperature system monitoring and computing based on adaptive fuzzy logic in wireless sensor networks  

Science Conference Proceedings (OSTI)

The many subfields in the wireless sensor networking literature include data fusion, data aggregation, remote environmental monitoring, sensing (temperature, pressure speed) and various military applications. The distance between sensor nodes can be ... Keywords: Fuzzy logic, Monitoring, RSSI, Temperature, WSN

Ing-Jiunn Su; Chia-Chih Tsai; Wen-Tsai Sung

2012-05-01T23:59:59.000Z

347

Method and system for conserving power in a telecommunications network during emergency situations  

Science Conference Proceedings (OSTI)

Disclosed is a method and apparatus for conserving power in a telecommunications network during emergency situations. A permissible number list of emergency and/or priority numbers is stored in the telecommunications network. In the event of an emergency or power failure, input digits of a call to the telecommunications network are compared to the permissible number list. The call is processed in the telecommunications network and routed to its destination if the input digits match an entry in the permissible number list. The call is dropped without any further processing if the input digits do not match an entry in the permissible number list. Thus, power can be conserved in emergency situations by only allowing emergency and/or priority calls.

Conrad, Stephen H. (Algodones, NM); O'Reilly, Gerard P. (Manalapan, NJ)

2011-10-11T23:59:59.000Z

348

Systems and methods for creation of conducting networks of magnetic particles through dynamic self-assembly process  

DOE Patents (OSTI)

Self-assembly of magnetic microparticles in AC magnetic fields. Excitation of the system by an AC magnetic field provides a variety of patterns that can be controlled by adjusting the frequency and the amplitude of the field. At low particle densities the low-frequency magnetic excitation favors cluster phase formation, while high frequency excitation favors chains and netlike structures. For denser configurations, an abrupt transition to the network phase was obtained.

Snezhko, Oleksiy (Woodridge, IL); Aronson, Igor (Darien, IL); Kwok, Wai-Kwong (Downers Grove, IL)

2011-01-25T23:59:59.000Z

349

Enhancing the Authentication of Bank Cheque Signatures by Implementing Automated System Using Recurrent Neural Network  

E-Print Network (OSTI)

The associatie memory feature of the Hopfield type recurrent neural network is used for the pattern storage and pattern authentication.This paper outlines an optimization relaxation approach for signature verification based on the Hopfield neural network (HNN)which is a recurrent network.The standard sample signature of the customer is cross matched with the one supplied on the Cheque.The difference percentage is obtained by calculating the different pixels in both the images.The network topology is built so that each pixel in the difference image is a neuron in the network.Each neuron is categorized by its states,which in turn signifies that if the particular pixel is changed.The network converges to unwavering condition based on the energy function which is derived in experiments.The Hopfield's model allows each node to take on two binary state values (changed/unchanged)for each pixel.The performance of the proposed technique is evaluated by applying it in various binary and gray scale images.This paper con...

Rao, Mukta; Dhaka, Vijaypal Singh

2010-01-01T23:59:59.000Z

350

Fault diagnosis for the feedwater heater system of a 300MW coal-fired power generating unit based on RBF neural network  

Science Conference Proceedings (OSTI)

In this paper, a new style radial basis function (RBF) neural network is used for fault diagnosis of the high-pressure feed-water heater system of a coal-fired power generating unit. The structure of the RBF network and its training algorithm are given. ...

Liangyu Ma; Yongguang Ma; Jin Ma

2005-08-01T23:59:59.000Z

351

Robustness of Ethernet-Based Real-Time Networked Control System with Multi-Level Client/Server Architecture  

E-Print Network (OSTI)

The importance of real-time communication at the device level in a factory automation setup is a widely researched area. This research is an effort to experimentally verify if Ethernet can be used as a real-time communication standard in a factory automation setup, by observing the effects of packet delays, packet loss, and network congestion on the performance of a networked control system (NCS). The NCS experimental setup used in this research involves real-time feedback control of multiple plants like DC motors and a magnetic-levitation system connected to one or more controllers. A multi-client-multi-server architecture on a local area network (LAN) was developed using user datagram protocol (UDP) as the communication protocol. Key observations are as follows. (1) The multi-client-single-server system showed the highest packet delays compared to single-client-single-server architecture. (2) In the singleclient- single-server system, as the Ethernet link utilization increased beyond 82 percent, the average packet delays and steady-state error of the DC motor speed-control system increased by 2231 percent and 304 percent, respectively. (3) Even under high link utilization, adding an additional server to the NCS reduced average packet delays considerably. (4) With large packet sizes, higher packet rates were automatically throttled by Ethernets flow control mechanism affecting the real-time communication negatively. (5) In the multiclient- multi-server architecture, average packet delays at higher packet rates, and at higher packet lengths were found to be 40 percent lesser than the those of the single-clientsingle- server system and 87.5 percent lesser than those of the multi-client-single-server system.

Bibinagar, Naveen Kumar

2010-08-01T23:59:59.000Z

352

Reliability and maintainability study of select solar-energy-system components in the National Solar Data Network. Final subcontract report  

Science Conference Proceedings (OSTI)

This study reports on the reliability and maintainability of select solar energy system components evaluated in 16 solar heating and cooling systems over a one-year period. The systems evaluated were instrumented sites from the National Solar Data Network (NSDN). A complete description and system schematic for each site is provided. The study period was generally between October 1981 to October 1982. The report provides quantitative R and M data (e.g., Failure Rate and Mean Time Between Failures) on pumps, motors and fans from the selected NSDN sites, along with conclusions and recommendations based on comparative data for other components. In summary, pumps, valves, and heat exchangers in solar heating and cooling (SHAC) systems appear to be very reliable and show failure rates comparable to other mechanical system applications. Control systems typically used in SHAC systems appear to be the least reliable but still fall within the range of failures exhibited by other mechanical systems. Evidence suggests that piping leaks in SHAC systems occur at three times the rate of other mechanical systems. Recommendations are provided on other areas of research necessary to determine the useful life of SHAC system components. Finally, an appendix to this report describes actual failures encountered in the 16 systems evaluated.

Kendall, P.W.; Logee, T.L.; Raymond, M.G.

1983-06-01T23:59:59.000Z

353

Sustainable Energy Solutions Task 1.0: Networked Monitoring and Control of Small Interconnected Wind Energy Systems  

SciTech Connect

EXECUTIVE SUMARRY This report presents accomplishments, results, and future work for one task of five in the Wichita State University Sustainable Energy Solutions Project: To develop a scale model laboratory distribution system for research into questions that arise from networked control and monitoring of low-wind energy systems connected to the AC distribution system. The lab models developed under this task are located in the Electric Power Quality Lab in the Engineering Research Building on the Wichita State University campus. The lab system consists of four parts: 1. A doubly-fed induction generator 2. A wind turbine emulator 3. A solar photovoltaic emulator, with battery energy storage 4. Distribution transformers, lines, and other components, and wireless and wired communications and control These lab elements will be interconnected and will function together to form a complete testbed for distributed resource monitoring and control strategies and smart grid applications testing. Development of the lab system will continue beyond this project.

Janet.twomey@wichita.edu

2010-04-30T23:59:59.000Z

354

Technological impact of Non-Conventional Renewable Energy in the Chilean Electricity System  

E-Print Network (OSTI)

Technological impact of Non-Conventional Renewable Energy in the Chilean Electricity System Juan D of methodology and analysis of the energy sector, considering whether they are simulation models. Molina C. GSM Victor J. Martinez A. GSM Hugh Rudnick, Fellow Department of Electrical Engineering

Rudnick, Hugh

355

Natural networks  

E-Print Network (OSTI)

Scale-free and non-computable characteristics of natural networks are found to result from the least-time dispersal of energy. To consider a network as a thermodynamic system is motivated since ultimately everything that exists can be expressed in terms of energy. According to the variational principle, the network will grow and restructure when flows of energy diminish energy differences between nodes as well as relative to nodes in surrounding systems. The natural process will yield scale-free characteristics because the nodes that contribute to the least-time consumption of free energy preferably attach to each other. Network evolution is a path-dependent and non-deterministic process when there are two or more paths to consume a common source of energy. Although evolutionary courses of these non-Hamiltonian systems cannot be predicted, many mathematical functions, models and measures that characterize networks can be recognized as appropriate approximations of the thermodynamic equation of motion that has been derived from statistical physics of open systems.

Tuomo Hartonen; Arto Annila

2011-06-21T23:59:59.000Z

356

Demonstration Assessment of Light Emitting Diode (LED) Walkway Lighting at the Federal Aviation Administration William J. Hughes Technical Center, in Atlantic City, New Jersey  

SciTech Connect

This report documents the results of a collaborative project to demonstrate a solid state lighting (SSL) general illumination product in an outdoor area walkway application. In the project, six light-emitting diode (LED) luminaires were installed to replace six existing high pressure sodium (HPS) luminaires mounted on 14-foot poles on a set of exterior walkways and stairs at the Federal Aviation Administration (FAA) William J. Hughes Technical Center in Atlantic City, New Jersey, during December, 2007. The effort was a U.S. Department of Energy (DOE) SSL Technology Gateway Demonstration that involved a collaborative teaming agreement between DOE, FAA and Ruud Lighting (and their wholly owned division, Beta LED). Pre- and post-installation power and illumination measurements were taken and used in calculations of energy savings and related economic payback, while personnel impacted by the new lights were provided questionnaires to gauge their perceptions and feedback. The SSL product demonstrated energy savings of over 25% while maintaining illuminance levels and improving illuminance uniformity. PNNL's economic analysis yielded a variety of potential payback results depending on the assumptions used. In the best case, replacing HPS with the LED luminaire can yield a payback as low as 3 years. The new lamps were quite popular with the affected personnel, who gave the lighting an average score of 4.46 out of 5 for improvement.

Kinzey, Bruce R.; Myer, Michael

2008-03-18T23:59:59.000Z

357

Safety System Oversight: 2010 Safety System Oversight Workshop  

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

Safety System Oversight Workshop Safety System Oversight Workshop May 12 - 13, 2010 Las Vegas, NV 2010 Facility Representative and Safety System Oversight Workshops Summary: PDF SSO Steering Committee Meeting Minutes: PDF 2009 Safety System Oversight Annual Award Workshop Agenda: PDF Workshop Presentations: Panel Discussion on the Integration of Facility Representatives and Safety System Oversight Personnel at Site Programs Presentation Panel Highlights Introduction, Goals, and Objectives for SSO Workshop Community Update Demographic Survey Results Introduction of the Safety System Oversight Steering Committee Earl Hughes Presentation Oak Ridge Fire Protection SSO Program Pat Smith, Oak Ridge Office Presentation Commercial Grade Dedication Fran Lemieux, NSTec, Nevada Test Site Presentation

358

A New Mobile Network Simulation And Analysis System And The Use Of Network Visualizations Through An End-User Graphics Package.  

E-Print Network (OSTI)

??Network simulations often output a log file, which must be parsed to understand the details of the simulation. Visualizations of these simulations are used to (more)

Anantachai, Arnond

2010-01-01T23:59:59.000Z

359

SELF-ORGANISING QUORUM SYSTEMS FOR AD HOC NETWORKS Gareth Owen and Mo Adda  

E-Print Network (OSTI)

-hop ad-hoc networks allow nodes to communicate with each other without being in transmission range for the destination. Many routing protocols propose a function that maps a node's ID to its location, but whilst this information. Li [2] divides the area into grid- squares of different orders. Starting with the grid

Augusto, Juan Carlos

360

Simulation of quorum systems in ad-hoc networks Gareth Huw Owen Mo Adda  

E-Print Network (OSTI)

to communicate with each other without being within the transmission range by relaying their messages through a function that maps a node's ID to its location. While this is ideal for networks that are static server have been proposed to provide this information. Li et al [1] divided the area into grid

Kent, University of

Note: This page contains sample records for the topic "hughes network systems" 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

A Predictive Sensor Network Using Ant System Rajani Muraleedharan and Lisa Ann Osadciw  

E-Print Network (OSTI)

and distributing dynamic information within the network. Energy usage is a key issue as the sensors are typically). The current information on energy usage, prediction and decisions concerning environmental situation functional even if some individual sensors fail. The tabu list supports energy usage pre- diction

Osadciw, Lisa

362

Diagnosis of hypoglycemic episodes using a neural network based rule discovery system  

Science Conference Proceedings (OSTI)

Hypoglycemia or low blood glucose is dangerous and can result in unconsciousness, seizures and even death for Type 1 diabetes mellitus (T1DM) patients. Based on the T1DM patients' physiological parameters, corrected QT interval of the electrocardiogram ... Keywords: Genetic algorithm, Hypoglycemic episodes, Medical diagnosis, Neural networks, Type 1 diabetes mellitus

K. Y. Chan; S. H. Ling; T. S. Dillon; H. T. Nguyen

2011-08-01T23:59:59.000Z

363

Loadability margin calculation of power system with SVC using artificial neural network  

Science Conference Proceedings (OSTI)

Voltage stability has become a major concern among the utilities over the past decade. With the development of FACTS devices, there is a growing interest in using these devices to improve the stability. In this paper a method using parallel self-organizing ... Keywords: Neural networks, Static var compensator, Voltage stability

P. K. Modi; S. P. Singh; J. D. Sharma

2005-09-01T23:59:59.000Z

364

Venetian Blind Control System Based on Fuzzy Neural Network for Indoor Daylighting  

Science Conference Proceedings (OSTI)

For the indoor daylighting need, venetian blinds are a key element in the passive control of buildings vision environment. They help to control glare, daylighting, and overheating, all of which affect both the comfort of occupants and a buildings ... Keywords: fuzzy neural network, visual comfort, position of venetian blind, double control loops

Yifei Chen; Huai Li; Xueliang Chen

2009-12-01T23:59:59.000Z

365

A Multicore Operating System with QoS Guarantees for Network Audio Applications  

E-Print Network (OSTI)

of such applications. For instance, device interrupt handling, network protocol pro- cessing, scheduling decisionsS domains called cells, and Tessellation distributes re- sources to cells. Further, each cell offers of a cell makes it possible to experimentally observe application perfor- mance metrics (e.g., completion

Kubiatowicz, John D.

366

M.: On the impact of network infrastructure parameters to the effectiveness of cyber attacks against industrial control systems  

E-Print Network (OSTI)

The fact that modern Networked Industrial Control Systems (NICS) depend on Information and Communication Technologies (ICT), is well known. Although many studies have focused on the security of SCADA systems, today we still lack the proper understanding of the effects that cyber attacks have on NICS. In this paper we identify the communication and control logic implementation parameters that influence the outcome of attacks against NICS and that could be used as effective measures for increasing the resilience of industrial installations. The implemented scenario involves a powerful attacker that is able to send legitimate Modbus packets/commands to control hardware in order to bring the physical process into a critical state, i.e. dangerous, or more generally unwanted state of the system. The analysis uses a Boiling Water Power Plant to show that the outcome of cyber attacks is influenced by network delays, packet losses, background traffic and control logic scheduling time. The main goal of this paper is to start an exploration of cyber-physical effects in particular scenarios. This study is the first of its kind to analyze cyber-physical systems and provides insight to the way that the cyber realm affects the physical realm.

B. Genge; C. Siaterlis; M. Hohenadel; Bla Genge; Christos Siaterlis; Marc Hohenadel

2012-01-01T23:59:59.000Z

367

An expert system design for a crude oil distillation column with the neural networks model and the process optimization using genetic algorithm framework  

Science Conference Proceedings (OSTI)

In this study an expert system of a crude oil distillation column is designed to predict the unknown values of required product flow and temperature in required input feed characteristics. The system is also capable to optimize the distillation process ... Keywords: Distillation column, Expert system, Genetic algorithms, Neural networks model

S. Motlaghi; F. Jalali; M. Nili Ahmadabadi

2008-11-01T23:59:59.000Z

368

Urban Networks Simulation Tools  

Science Conference Proceedings (OSTI)

Utilities that serve customers using networked secondary, or low-voltage, systems require that technologies be able to model the system and perform load flow and other circuit analyses on both the primary and the networked secondary. Utilities can use commercially available load flow products to model their radial systems, but many older products are unable to accurately model and perform analyses on meshed secondary network systems sourced from multiple primary feeders. Consequently, many utilities are ...

2010-03-31T23:59:59.000Z

369

Towards A Novel Unified Framework for Developing Formal, Network and Validated Agent-Based Simulation Models of Complex Adaptive Systems  

E-Print Network (OSTI)

Literature on the modeling and simulation of complex adaptive systems (cas) has primarily advanced vertically in different scientific domains with scientists developing a variety of domain-specific approaches and applications. However, while cas researchers are inherently interested in an interdisciplinary comparison of models, to the best of our knowledge, there is currently no single unified framework for facilitating the development, comparison, communication and validation of models across different scientific domains. In this thesis, we propose first steps towards such a unified framework using a combination of agent-based and complex network-based modeling approaches and guidelines formulated in the form of a set of four levels of usage, which allow multidisciplinary researchers to adopt a suitable framework level on the basis of available data types, their research study objectives and expected outcomes, thus allowing them to better plan and conduct their respective research case studies. Firstly, the complex network modeling level of the proposed framework entails the development of appropriate complex network models for the case where interaction data of cas components is available, with the aim of detecting emergent patterns in the cas under

Muaz Ahmed; Khan Niazi

2011-01-01T23:59:59.000Z

370

Neural network system and methods for analysis of organic materials and structures using spectral data  

DOE Patents (OSTI)

Apparatus and processes are described for recognizing and identifying materials. Characteristic spectra are obtained for the materials via spectroscopy techniques including nuclear magnetic resonance spectroscopy, infrared absorption analysis, x-ray analysis, mass spectroscopy and gas chromatography. Desired portions of the spectra may be selected and then placed in proper form and format for presentation to a number of input layer neurons in an offline neural network. The network is first trained according to a predetermined training process; it may then be employed to identify particular materials. Such apparatus and processes are particularly useful for recognizing and identifying organic compounds such as complex carbohydrates, whose spectra conventionally require a high level of training and many hours of hard work to identify, and are frequently indistinguishable from one another by human interpretation.

Meyer, B.J.; Sellers, J.P.; Thomsen, J.U.

1993-06-08T23:59:59.000Z

371

Neural network system and methods for analysis of organic materials and structures using spectral data  

DOE Patents (OSTI)

Apparatus and processes for recognizing and identifying materials. Characteristic spectra are obtained for the materials via spectroscopy techniques including nuclear magnetic resonance spectroscopy, infrared absorption analysis, x-ray analysis, mass spectroscopy and gas chromatography. Desired portions of the spectra may be selected and then placed in proper form and format for presentation to a number of input layer neurons in an offline neural network. The network is first trained according to a predetermined training process; it may then be employed to identify particular materials. Such apparatus and processes are particularly useful for recognizing and identifying organic compounds such as complex carbohydrates, whose spectra conventionally require a high level of training and many hours of hard work to identify, and are frequently indistinguishable from one another by human interpretation.

Meyer, Bernd J. (Athens, GA); Sellers, Jeffrey P. (Suwanee, GA); Thomsen, Jan U. (Fredricksberg, DK)

1993-01-01T23:59:59.000Z

372

DUAL USE OF LEDS: SIGNALING AND COMMUNICATIONS IN ITS Grantham Pang, Chi-ho Chan, Hugh Liu, Thomas Kwan  

E-Print Network (OSTI)

of light-emitting diodes (LEDs) over incandescent lights is well-supported. This is due to their high construction of LEDs panel and the illuminance of LEDs. CONCLUSIONS In the near future, light-emitting diodes, U.S. Patent Office. 2. "Light emitting diode dot matrix display system with audio output", G. Pang

Pang, Grantham

373

LED Traffic Light as a Communications Device Grantham Pang, Thomas Kwan, Chi-Ho Chan, Hugh Liu.  

E-Print Network (OSTI)

:http://www.eee.hku.hk/~gpang Abstract The visible light from an LED (light emitting diode) traffic light can be modulated and encoded on the description of an audio information system made up of high brightness, visible light emitting diodes (LEDs messages 1. Introduction Recently, high intensity light emitting diodes for traffic signals are available

Pang, Grantham

374

Network Observability Transitions  

E-Print Network (OSTI)

In the modeling, monitoring, and control of complex networks, a fundamental problem concerns the comprehensive determination of the state of the system from limited measurements. Using power grids as example networks, we show that this problem leads to a new type of percolation transition, here termed a {\\it network observability transition}, which we solve analytically for the configuration model. We also demonstrate a dual role of the network's community structure, which both facilitates optimal measurement placement and renders the networks substantially more sensitive to `observability attacks'. Aside from their immediate implications for the development of smart grids, these results provide insights into decentralized biological, social, and technological networks.

Yang, Yang; Motter, Adilson E; 10.1103/PhysRevLett.109.258701

2013-01-01T23:59:59.000Z

375

Neural network control for an intelligent air handler in an air-conditioning system.  

E-Print Network (OSTI)

??Many commercial air-conditioning systems in hot and humid areas like Singapore are operated throughout the year. There are two main classifications for these systems: the (more)

Zhang, Qi.

2008-01-01T23:59:59.000Z

376

Feasibility of integrating other federal information systems into the Global Network of Environment and Technology, GNET{reg_sign}  

SciTech Connect

The Global Environment and Technology Enterprise (GETE) of the Global Environment and Technology Foundation (GETF) has been tasked by the US Department of Energy`s (DOE), Federal Energy Technology Center (FETC) to assist in reducing DOE`s cost for the Global Network of Environment and Technology (GNET{reg_sign}). As part of this task, GETE is seeking federal partners to invest in GNET{reg_sign}. The authors are also seeking FETC`s commitment to serve as GNET`s federal agency champion promoting the system to potential agency partners. This report assesses the benefits of partnering with GNET{reg_sign} and provides recommendations for identifying and integrating other federally funded (non-DOE) environmental information management systems into GNET{reg_sign}.

NONE

1998-05-01T23:59:59.000Z

377

Networks in Cognitive Science  

E-Print Network (OSTI)

Networks of interconnected nodes have long played a key role in cognitive science, from artificial neural networks to spreading activation models of semantic memory. Recently, however, a new Network Science has been developed, providing insights into the emergence of global, system-scale properties in contexts as diverse as the Internet, metabolic reactions or collaborations among scientists. Today, the inclusion of network theory into cognitive sciences, and the expansion of complex systems science, promises to significantly change the way in which the organization and dynamics of cognitive and behavioral processes are understood. In this paper, we review recent contributions of network theory at different levels and domains within the cognitive sciences.

Baronchelli, Andrea; Pastor-Satorras, Romualdo; Chater, Nick; Christiansen, Morten H

2013-01-01T23:59:59.000Z

378

Methodology for Estimating ton-Miles of Goods Movements for U.S. Freight Mulitimodal Network System  

SciTech Connect

Ton-miles is a commonly used measure of freight transportation output. Estimation of ton-miles in the U.S. transportation system requires freight flow data at disaggregated level (either by link flow, path flows or origin-destination flows between small geographic areas). However, the sheer magnitude of the freight data system as well as industrial confidentiality concerns in Census survey, limit the freight data which is made available to the public. Through the years, the Center for Transportation Analysis (CTA) of the Oak Ridge National Laboratory (ORNL) has been working in the development of comprehensive national and regional freight databases and network flow models. One of the main products of this effort is the Freight Analysis Framework (FAF), a public database released by the ORNL. FAF provides to the general public a multidimensional matrix of freight flows (weight and dollar value) on the U.S. transportation system between states, major metropolitan areas, and remainder of states. Recently, the CTA research team has developed a methodology to estimate ton-miles by mode of transportation between the 2007 FAF regions. This paper describes the data disaggregation methodology. The method relies on the estimation of disaggregation factors that are related to measures of production, attractiveness and average shipments distances by mode service. Production and attractiveness of counties are captured by the total employment payroll. Likely mileages for shipments between counties are calculated by using a geographic database, i.e. the CTA multimodal network system. Results of validation experiments demonstrate the validity of the method. Moreover, 2007 FAF ton-miles estimates are consistent with the major freight data programs for rail and water movements.

Oliveira Neto, Francisco Moraes [ORNL; Chin, Shih-Miao [ORNL; Hwang, Ho-Ling [ORNL

2013-01-01T23:59:59.000Z

379

Predicting of fan speed for energy saving in HVAC system based on adaptive network based fuzzy inference system  

Science Conference Proceedings (OSTI)

In this paper, a HVAC (heating, ventilating and air-conditioning) system has two different zones was designed and fan motor speed to minimize energy consumption of the HVAC system was controlled by a conventional (proportional-integral-derivative) PID ... Keywords: ANFIS, Air flow control, Energy saving, Fan motor speed predicting, HVAC system, PID control, Temperature control

Servet Soyguder; Hasan Alli

2009-05-01T23:59:59.000Z

380

An adaptive network based fuzzy inference system-genetic algorithm clustering ensemble algorithm for performance assessment and improvement of conventional power plants  

Science Conference Proceedings (OSTI)

Performance measurement and assessment are fundamental to management planning and control activities of complex systems such as conventional power plants. They have received considerable attention by both management practitioners and theorists. There ... Keywords: Adaptive network based fuzzy inference system (ANFIS), Conventional power plants, Genetic algorithm clustering ensemble (GACE), Improvement, Performance assessment

A. Azadeh; M. Saberi; M. Anvari; A. Azaron; M. Mohammadi

2011-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

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

382

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

383

Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings  

Science Conference Proceedings (OSTI)

Energy efficient office lighting systems can save 40% in electricity consumption in areas that receive significant amounts of daylight. In spite of the savings they can generate, daylighting systems are not widely used in the commercial office building. ...

Yao-Jung Wen; Jessica Granderson; Alice M. Agogino

2006-06-01T23:59:59.000Z

384

State-based network intrusion detection systems for SCADA protocols: a proof of concept  

Science Conference Proceedings (OSTI)

We present a novel Intrusion Detection System able to detect complex attacks to SCADA systems. By complex attack, we mean a set of commands (carried in Modbus packets) that, while licit when considered in isolation on a single-packet basis, interfere ... Keywords: IDS, SCADA systems, critical infrastructures, security

Andrea Carcano; Igor Nai Fovino; Marcelo Masera; Alberto Trombetta

2009-09-01T23:59:59.000Z

385

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

386

Stochastic hub and spoke networks  

E-Print Network (OSTI)

life to the early Roman water management and road network systems to modern day transportation systems and social networks such as Facebook and Twitter. The topic of this PhD thesis is an in-depth research study on a specific type of network system...

Hult, Edward Eric

2011-10-11T23:59:59.000Z

387

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.

388

Feeder and Network Evolution for the Distribution System of the Future  

Science Conference Proceedings (OSTI)

Historically, electrical distribution systems have been designed to deliver power from the distribution substations to the end users. The future evolution of the distribution system, as envisioned in EPRI's Advanced Distribution Automation (ADA) initiative, will merge power delivery with distributed intelligent control and communications systems. This report covers the results of a survey of electric utilities and a follow-up seminar with survey participants. Survey responses were obtained from eleven US...

2004-12-16T23:59:59.000Z

389

Distributed Intrusion Detection System in A Multi-Layer Network Architecture of Smart Grids.  

E-Print Network (OSTI)

??This thesis proposes a Distributed Intrusion Detection System for Smart Grids by developing and deploying intelligent modules in multiple layers of the smart grid in (more)

Zhang, Yichi

2011-01-01T23:59:59.000Z

390

Advanced Network Toolkit for Assessments  

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

Network Toolkit for Assessments Network Toolkit for Assessments and Remote Mapping (ANTFARM) Uses existing information to passively map control systems networks and identify cyber security perimeters Control systems operators require a map of their energy control system network in order to identify its electronic security perimeter, critical to meeting the North American Electric Reliability Corporation's (NERC) Critical Infrastructure Protection (CIP) standards. However, purchasing active, online scanning tools specifically for network mapping can be costly, and these tools can disrupt control system function, causing system latency and possibly affecting power supply. The ANTFARM software tool enables system operators to remotely and

391

A Dynamic Information Manager for Networked Monitoring of Large Power Systems  

Science Conference Proceedings (OSTI)

The Wide Area Measurement Systems (WAMS) project, a broad-based, multi-phase effort, has been focused on enhancing the reliability of interconnected power systems. This report documents the third phase of that effort, which addresses the management of the data and information that WAMS-related technologies provide.

1999-05-18T23:59:59.000Z

392

Decision support system for estimating the technically and economically exploitable renewable energy sources potential in wide areas for connection to high voltage networks  

Science Conference Proceedings (OSTI)

A decision support information system for estimating the technically and economically exploitable renewable energy sources (RES) potential in wide areas is presented in this paper. The system estimates the RES potential in specific areas, examines ... Keywords: DSS, GIS, biomass, decision support systeoms, distributed generation, geographical information systems, high voltage network, renewable energy estimation, renewable energy forecasting, renewable energy potential, renewable energy sources, small hydro, wind energy, wind power

Michael Psalidas; Demosthenes Agoris; Vassilis Kilias; Kostas Tigas; Panagiotis Stratis; Giannis Vlachos

2005-04-01T23:59:59.000Z

393

Energy Saving Measures of Heating Network - Computerized Real-time Control System  

E-Print Network (OSTI)

The cost of energy consuming of heating system takes a great proportion in the total cost of realty management. This article,focuses or the drawbacks of conventional heating system, analyzes the data collected from actual practices and proposes a new system control theory, that is computerize the real-time frequency conversion control or area,time, mode of heat transformation and temperature grads. The aim of the new theory is promoting the efficiency of energy conversion and minimizing the cost of energy consuming.

Zhang, J.

2006-01-01T23:59:59.000Z

394

System level design of power distribution network for mobile computing platforms  

E-Print Network (OSTI)

to meet the system voltage noise requirements. Introductiondifferent voltage level specs due to V cc min requirement ofvoltage and frequency scaling (DVFS), Dynamic Power Gat- ing (DPM), and area/performance requirements

Shayan Arani, Amirali

2011-01-01T23:59:59.000Z

395

Networking technology adoption : system dynamics modeling of fiber-to-the-home  

E-Print Network (OSTI)

A system dynamics model is developed and run to study the adoption of fiber-to-the-home as a residential broadband technology. Communities that currently do not have broadband in the United States are modeled. This case ...

Kelic, Andjelka, 1972-

2005-01-01T23:59:59.000Z

396

A system architecture evaluation of MOBI.E : the Portuguese Electric Vehicle network  

E-Print Network (OSTI)

Architecting consumes a relatively small portion of the design process, yet the decisions made at this critical stage will direct the overall course of the implementation and operational process. Well architected systems ...

Ratnam, Aravind

2012-01-01T23:59:59.000Z

397

The strategic evolution of systems : principles and framework with applications to space communication networks  

E-Print Network (OSTI)

Complex systems in operation are constrained by legacy; in other words, the existing properties, structure, components, protocols, software, people and etc. that are inherited over time. This inheritance heavily influences ...

Manuse, Jennifer E

2009-01-01T23:59:59.000Z

398

Bayesian Belief Network (BBN)-based advisory system development for steam generator replacement project management  

E-Print Network (OSTI)

The growing need for improved project management technique points to the usefulness of a knowledge-base advisory system to help project managers understand current and future project status and optimize decisions based ...

Kim, Dohyoung, 1970-

2002-01-01T23:59:59.000Z

399

Building a wireless mesh networked real-time electricity metering system in an MIT dormitory  

E-Print Network (OSTI)

A competitive, closed-loop information feedback system of wireless electricity meters was designed, tested, and implemented in seven MIT dormitory rooms. The meters utilized Allegro Hall Effect current sensors as well as ...

Oehlerking, Austin L

2009-01-01T23:59:59.000Z

400

Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems  

Science Conference Proceedings (OSTI)

The conference, the eleventh of a series of successful meetings of researchers and practitioners from both academia and industry, has been established to serve as the premier forum within ACM to discuss systems issues raised by emerging trends and paradigms ...

Chiara Petrioli, Landon Cox, Kamin Whitehouse

2013-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

A comparison of transportation network resilience under simulated system optimum and user equilibrium conditions  

Science Conference Proceedings (OSTI)

Resilience is a characteristic that indicates system performance under unusual conditions, recovery speed, and the amount of outside assistance required for restoration to its original functional state. Resilience is important for daily events, such ...

Pamela M. Murray-Tuite

2006-12-01T23:59:59.000Z

402

XCast : a personal and groupwise broadcasting system for social event networking  

E-Print Network (OSTI)

This thesis describes the design and development of a system that is aimed for personalized and group-wise broadcasts to collaboratively distribute information and to coordinate locally created events in infrastructure-free ...

Lee, Sung-Hyuck

2008-01-01T23:59:59.000Z

403

ETRANS: an energy transport system optimization code for distributed networks of solar collectors  

DOE Green Energy (OSTI)

The optimization code ETRANS was developed at the Pacific Northwest Laboratory to design and estimate the costs associated with energy transport systems for distributed fields of solar collectors. The code uses frequently cited layouts for dish and trough collectors and optimizes them on a section-by-section basis. The optimal section design is that combination of pipe diameter and insulation thickness that yields the minimum annualized system-resultant cost. Among the quantities included in the costing algorithm are (1) labor and materials costs associated with initial plant construction, (2) operating expenses due to daytime and nighttime heat losses, and (3) operating expenses due to pumping power requirements. Two preliminary series of simulations were conducted to exercise the code. The results indicate that transport system costs for both dish and trough collector fields increase with field size and receiver exit temperature. Furthermore, dish collector transport systems were found to be much more expensive to build and operate than trough transport systems. ETRANS itself is stable and fast-running and shows promise of being a highly effective tool for the analysis of distributed solar thermal systems.

Barnhart, J.S.

1980-09-01T23:59:59.000Z

404

Data and Networking | Argonne Leadership Computing Facility  

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

Networking Data and Networking Data Storage The ALCF's data storage system is used to retain the data generated by simulations and visualizations. Disk storage provides...

405

Modeling Satellite District Heating and Cooling Networks.  

E-Print Network (OSTI)

??Satellite District Heating and Cooling (DHC) systems offer an alternative structure to conventional, centralized DHC networks. Both use a piping network carrying steam or water (more)

Rulff, David

2011-01-01T23:59:59.000Z

406

Network Invariants in Action  

Science Conference Proceedings (OSTI)

The paper presents the method of network invariants for verifying a wide spectrum of LTL properties, including liveness, of parameterized systems. This method can be applied to establish the validity of the property over a system S(n) for ...

Yonit Kesten; Amir Pnueli; Elad Shahar; Lenore D. Zuck

2002-08-01T23:59:59.000Z

407

Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings  

E-Print Network (OSTI)

Energy efficient office lighting systems can save 40% in electricity consumption in areas that receive significant amounts of daylight. In spite of the savings they can generate, daylighting systems are not widely used in the commercial office building. Barriers prohibiting adoption include high retrofitting costs, and difficulty estimating and maintaining worksurface illuminances. In this paper, an intelligent control framework that utilizes MEMS-based (micro-electro-mechanical systems) Smart Dust motes wireless platforms is explored. Due to their small size, they can be placed directly on the worksurface. As a result, illuminance estimation and maintenance is significantly improved. Furthermore, motes functioning as actuators can be interfaced with dimming ballasts without the need to rewire the building, enabling less expensive, less disruptive retrofitting of commercial buildings.

Yao-Jung Wen; et al.

2006-01-01T23:59:59.000Z

408

The modeling of mode choices of intercity freight transportation with the artificial neural networks and adaptive neuro-fuzzy inference system  

Science Conference Proceedings (OSTI)

Mode choice modeling is probably the most important element of transportation planning. It affects the general efficiency of travel and the allocation of resources. The development of mode choice models has recently witnessed significant advances in ... Keywords: Freight transportation, Fuzzy logic, Hybrid algorithm, Inference system, Mode choices, Neural networks, Neuro-fuzzy

Ahmet Tortum; Nadir Yayla; Mahir Gkda?

2009-04-01T23:59:59.000Z

409

Impact of wind generators on the stability of power system network  

Science Conference Proceedings (OSTI)

This paper investigates the impacts of wind generators on the transient stability of a small power system. Two types of wind generators are considered, a fixed speed and variable speed induction generators. The behavior of synchronous generator's rotor ... Keywords: distributed generators, fixed and variable speed wind generators, transient stability

K. A. Folly; K. Tjiuma

2007-05-01T23:59:59.000Z

410

Wireless transmission network application system design in mine pressure monitoring of coal face  

Science Conference Proceedings (OSTI)

In order to meet the intensive and efficient mine construction, unit yield of the fully mechanized coal face should be improved constantly and reliability of production system in mechanized face must be further strengthened. Pressure monitoring technology ... Keywords: lab VIEW, mining pressure monitoring, wireless communication

Qingdong Wang; Changjun Zhu

2009-11-01T23:59:59.000Z

411

Discrete Dynamical System Modeling for Gene Regulatory Networks of HMF Tolerance for  

E-Print Network (OSTI)

Saccharomyces cerevisiae in response to 5-hydroxymethylfurfural, a bioethanol conversion inhibitor. The modeling) In the bioethanol conversion process, this system equation describes the ideal behavior of yeast gene expression in yeast during biomass conversion to ethanol. The Verhulst equation, a single- variable DDS model

Song, Joe

412

A Visual Network Analysis Method for Large Scale Parallel I/O Systems  

E-Print Network (OSTI)

VAMPIRE ENERGY GAME SYSTEM: ON FOR 2 HOURS A DAY #12;4 How to get rid of your vampire plug loads You to eliminate all plug loads and the spooky vampire plug loads. Or, the simplest solution of course than was used by the machine in the factory that created it in the first place. Vampire energy Some

413

Using network interface support to avoid asynchronous protocol processing in shared virtual memory systems  

Science Conference Proceedings (OSTI)

The performance of page-based software shared virtual memory (SVM) is still far from that achieved on hardware-coherent distributed shared memory (DSM) systems. The interrupt cost for asynchronous protocol processing has been found to be a key source ...

Angelos Bilas; Cheng Liao; Jaswinder Pal Singh

1999-05-01T23:59:59.000Z

414

An Intercommunication Home Energy Management System with Appliance Recognition in Home Network  

Science Conference Proceedings (OSTI)

In present days there are wide varieties of household electric appliances along with different power consumption habits of consumers, making identifying electric appliances without presetting difficulty. This paper introduces smart appliance management ... Keywords: appliance recognition, home energy management, smart appliance management system

Ying-Xun Lai; Joel Jos Rodrigues; Yueh-Min Huang; Hong-Gang Wang; Chin-Feng Lai

2012-02-01T23:59:59.000Z

415

Network topology analysis.  

SciTech Connect

Emerging high-bandwidth, low-latency network technology has made network-based architectures both feasible and potentially desirable for use in satellite payload architectures. The selection of network topology is a critical component when developing these multi-node or multi-point architectures. This study examines network topologies and their effect on overall network performance. Numerous topologies were reviewed against a number of performance, reliability, and cost metrics. This document identifies a handful of good network topologies for satellite applications and the metrics used to justify them as such. Since often multiple topologies will meet the requirements of the satellite payload architecture under development, the choice of network topology is not easy, and in the end the choice of topology is influenced by both the design characteristics and requirements of the overall system and the experience of the developer.

Kalb, Jeffrey L.; Lee, David S.

2008-01-01T23:59:59.000Z

416

Flexible application driven network striping over Wireless Wide Area Networks  

E-Print Network (OSTI)

Inverse multiplexing, or network striping, allows the construction of a high-bandwidth virtual channel from a collection of multiple low-bandwidth network channels. Striping systems usually employ a packet scheduling policy ...

Qureshi, Asfandyar

2005-01-01T23:59:59.000Z

417

Next Generation Waste Tracking: Linking Legacy Systems with Modern Networking Technologies  

SciTech Connect

This report describes results from a preliminary analysis to satisfy the Department of Energy (DOE) objective to ensure the safe, secure, efficient packaging and transportation of materials both hazardous and non hazardous [1, 2]. The DOE Office of Environmental Management (OEM) through Oak Ridge National Laboratory (ORNL) has embarked on a project to further this objective. OEM and ORNL have agreed to develop, demonstrate and make available modern day cost effective technologies for characterization, identification, tracking, monitoring and disposal of radioactive waste when transported by, or between, motor, air, rail, and water modes. During the past 8 years ORNL has investigated and deployed Web 2.0 compliant sensors into the transportation segment of the supply chain. ORNL has recently demonstrated operational experience with DOE Oak Ridge Operations Office (ORO) and others in national test beds and applications within this domain of the supply chain. Furthermore, in addition to DOE, these hazardous materials supply chain partners included Federal and State enforcement agencies, international ports, and commercial sector shipping operations in a hazardous/radioactive materials tracking and monitoring program called IntelligentFreight. IntelligentFreight is an ORNL initiative encompassing 5 years of research effort associated with the supply chain. The ongoing ORNL SmartFreight programs include RadSTraM [3], GRadSTraM , Trusted Corridors, SensorPedia [4], SensorNet, Southeastern Transportation Corridor Pilot (SETCP) and Trade Data Exchange [5]. The integration of multiple technologies aimed at safer more secure conveyance has been investigated with the core research question being focused on testing distinctly different distributed supply chain information sharing systems. ORNL with support from ORO have demonstrated capabilities when transporting Environmental Management (EM) waste materials for disposal over an onsite haul road. ORNL has unified the operations of existing legacy hazardous, radioactive and related informational databases and systems using emerging Web 2.0 technologies. These capabilities were used to interoperate ORNL s waste generating, packaging, transportation and disposal with other DOE ORO waste management contractors. Importantly, the DOE EM objectives were accomplished in a cost effective manner without altering existing information systems. A path forward is to demonstrate and share these technologies with DOE EM, contractors and stakeholders. This approach will not alter existing DOE assets, i.e. Automated Traffic Management Systems (ATMS), Transportation Tracking and Communications System (TRANSCOM), the Argonne National Laboratory (ANL) demonstrated package tracking system, etc

Walker, Randy M [ORNL; Resseguie, David R [ORNL; Shankar, Mallikarjun [ORNL; Gorman, Bryan L [ORNL; Smith, Cyrus M [ORNL; Hill, David E [ORNL

2010-01-01T23:59:59.000Z

418

From systems biology to photosynthesis and whole-plant modeling: a conceptual model for integrating multi-scale networks  

SciTech Connect

Network analysis is now a common statistical tool for molecular biologists. Network algorithms are readily used to model gene, protein and metabolic correlations providing insight into pathways driving biological phenomenon. One output from such an analysis is a candidate gene list that can be responsible, in part, for the biological process of interest. The question remains, however, as to whether molecular network analysis can be used to inform process models at higher levels of biological organization. In our previous work, transcriptional networks derived from three plant species were constructed, interrogated for orthology and then correlated to photosynthetic inhibition at elevated temperature. One unique aspect of that study was the link from co-expression networks to net photosynthesis. In this addendum, we propose a conceptual model where traditional network analysis can be linked to whole-plant models thereby informing predictions on key processes such as photosynthesis, nutrient uptake and assimilation, and C partitioning.

Weston, David [ORNL; Hanson, Paul J [ORNL; Norby, Richard J [ORNL; Tuskan, Gerald A [ORNL; Wullschleger, Stan D [ORNL

2012-01-01T23:59:59.000Z

419

Routing Statistics for Unqueued Banyan Networks  

E-Print Network (OSTI)

Banyan networks comprise a large class of networks that have been used for interconnection in large-scale multiprocessors and telephone switching systems. Regular variants of Banyan networks, such as delta and butterfly ...

Knight, Thomas F., Jr.

1990-09-01T23:59:59.000Z

420

Neural Networks for Postprocessing Model Output: ARPS  

Science Conference Proceedings (OSTI)

The temperature forecasts of the Advanced Regional Prediction System are postprocessed by a neural network. Specifically, 31 stations are considered, and for each a neural network is developed. The nine input variables to the neural network are ...

Caren Marzban

2003-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Network Access to Multimedia Information  

Science Conference Proceedings (OSTI)

This report summarises the requirements of research and academic network users for network access to multimedia information. It does this by investigating some of the projects planned or currently underway in the community. Existing information systems ...

C. Adie

1994-05-01T23:59:59.000Z

422

Critical Infrastructure Modeling: An Approach to Characterizing Interdependencies of Complex Networks & Control Systems  

SciTech Connect

Critical infrastructure control systems face many challenges entering the 21st century, including natural disasters, cyber attacks, and terrorist attacks. Revolutionary change is required to solve many existing issues, including gaining greater situational awareness and resiliency through embedding modeling and advanced control algorithms in smart sensors and control devices instead of in a central controller. To support design, testing, and component analysis, a flexible simulation and modeling capability is needed. Researchers at Idaho National Laboratory are developing and evaluating such a capability through their CIPRsim modeling and simulation framework.

Stuart Walsh; Shane Cherry; Lyle Roybal

2009-05-01T23:59:59.000Z

423

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

424

An autonomous wireless sensor network deployment system using mobile robots for human existence detection in case of disasters  

Science Conference Proceedings (OSTI)

This paper presents a novel approach of using autonomous mobile robots to deploy a Wireless Sensor Network (WSN) for human existence detection in case of disasters. During WSN deployment, mobile robots perform cooperative Simultaneous Localization and ... Keywords: Cooperative Simultaneous Localization and Mapping (SLAM), Human existence detection, Map merging, Sensor node deployment strategies, Wireless sensor networks

Gurkan Tuna, V. Cagri Gungor, Kayhan Gulez

2014-02-01T23:59:59.000Z

425

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

426

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

427

Neuro-fuzzy controller of low head hydropower plants using adaptive-network based fuzzy inference system  

Science Conference Proceedings (OSTI)

This paper presents an attempt of nonlinear, multivariable control of low-head hydropower plants, by using adaptive-network based fuzzy inference system (ANFIS). The new design technique enhances fuzzy controllers with self-learning capability for achieving prescribed control objectives in a near optimal manner. The controller has flexibility for accepting more sensory information, with the main goal to improve the generator unit transients, by adjusting the exciter input, the wicket gate and runner blade positions. The developed ANFIS controller whose control signals are adjusted by using incomplete on-line measurements, can offer better damping effects to generator oscillations over a wide range of operating conditions, than conventional controllers. Digital simulations of hydropower plant equipped with low-head Kaplan turbine are performed and the comparisons of conventional excitation-governor control, state-feedback optimal control and ANFIS based output feedback control are presented. To demonstrate the effectiveness of the proposed control scheme and the robustness of the acquired neuro-fuzzy controller, the controller has been implemented on a complex high-order non-linear hydrogenerator model.

Djukanovic, M.B. [Inst. Nikola Tesla, Belgrade (Yugoslavia). Dept. of Power Systems; Calovic, M.S. [Univ. of Belgrade (Yugoslavia). Dept. of Electrical Engineering; Vesovic, B.V. [Inst. Mihajlo Pupin, Belgrade (Yugoslavia). Dept. of Automatic Control; Sobajic, D.J. [Electric Power Research Inst., Palo Alto, CA (United States)

1997-12-01T23:59:59.000Z

428

Using reference frames and the Global Positioning System (GPS) to produce control networks for spatial data  

E-Print Network (OSTI)

The Global Positioning System has enabled researchers to gather spatial data on a scale that was, until recently, cost prohibitive. Projects that cover an area of a few hectares can be included in data sets that cover entire countries. The ease at which point locations can be measured over large distances has highlighted an existing problem with data capture. Data collected using one set of control points may or may not overlay data collected using another. This thesis details a procedure for setting base control points that cover very large areas. Data obtained from the International GPS Service for Geodynamics (IGS) is used in conjunction with the International Terrestrial Reference Frame (ITRF) to establish control points anywhere in the world. Researchers utilizing these control points for base station locations or as registration points, are able to produce data with an absolute accuracy of 0.3 meter between projects, countries and continents. The problem of overlaying data has been reduced to the point that it is insignificant. Issues of datum and projections, and the use of existing data sets are addressed. Of special interest are the short project times and resulting cost savings over conventional methods. Specific projects in Texas, Azerbaijan, and Mali are presented. The project in Texas is the same size as the project in Azerbaijan, but on different continents. The project in Mali is much larger and has been the most comprehensive, from setting initial control points to training local researchers in data collection.

Naismith, James Mozeney

1998-01-01T23:59:59.000Z

429

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

430

Wireless sensor networks for habitat monitoring  

Science Conference Proceedings (OSTI)

We provide an in-depth study of applying wireless sensor networks to real-world habitat monitoring. A set of system design requirements are developed that cover the hardware design of the nodes, the design of the sensor network, and the capabilities ... Keywords: environmental monitoring, habitat monitoring, low power systems, sensor network architecture, wireless sensor networks

Alan Mainwaring; David Culler; Joseph Polastre; Robert Szewczyk; John Anderson

2002-09-01T23:59:59.000Z

431

Seven Deadliest Network Attacks  

Science Conference Proceedings (OSTI)

Do you need to keep up with the latest hacks, attacks, and exploits effecting networks? Then you need "Seven Deadliest Network Attacks". This book pinpoints the most dangerous hacks and exploits specific to networks, laying out the anatomy of these attacks including how to make your system more secure. You will discover the best ways to defend against these vicious hacks with step-by-step instruction and learn techniques to make your computer and network impenetrable. Attacks detailed in this book include: Denial of Service; War Dialing; Penetration 'Testing'; Protocol Tunneling; Spanning Tree Attacks; Man-in-the-Middle; and, Password Replay. Knowledge is power, find out about the most dominant attacks currently waging war on computers and networks globally. Discover the best ways to defend against these vicious attacks; step-by-step instruction shows you how. Institute countermeasures, don't be caught defenseless again, learn techniques to make your computer and network impenetrable.

Prowell, Stacy J [ORNL; Borkin, Michael [None; Kraus, Robert [Solutionary, Inc.

2010-05-01T23:59:59.000Z

432

Systems Infrastructure (SYS 18)  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure John Hicks, Karencomponents The Systems Infrastructure team assembles, tests,

Richard Guy; John Hicks; Karen Weeks

2006-01-01T23:59:59.000Z

433

SYS 5: Systems Infrastructure  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure Kevin Chang, Johnnents The Systems Infrastructure team assembles, tests, and

2006-01-01T23:59:59.000Z

434

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

435

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

436

Attacking Automatic Wireless Network Selection  

E-Print Network (OSTI)

Wireless 802.11 networking is becoming so prevalent that many users have become accustomed to having available wireless networks in their workplace, home, and many public places such as airports and coffee shops. Modern client operating systems implement automatic wireless network discovery and known network identification to facilitate wireless networking for the end-user. In order to implement known network discovery, client operating systems remember past wireless networks that have been joined and automatically look for these networks (referred to as Preferred or Trusted Networks) whenever the wireless network adapter is enabled. By examining these implementations in detail, we have discovered previously undisclosed vulnerabilities in the implementation of these algorithms under the two most prevalent client operating systems, Windows XP and MacOS X. With custom base station software, an attacker may cause clients within wireless radio range to associate to the attackers wireless network without user interaction or notification. This will occur even if the user has never connected to a wireless network before or they have an empty Preferred/Trusted Networks List. We describe these vulnerabilities as well as their implementation and impact. 1

Dino A. Dai Zovi; Shane A. Macaulay

2005-01-01T23:59:59.000Z

437

Generation of optimal artificial neural networks using a pattern search algorithm: Application to approximation of chemical systems  

Science Conference Proceedings (OSTI)

A pattern search optimization method is applied to the generation of optimal artificial neural networks (ANNs). Optimization is performed using a mixed variable extension to the generalized pattern search method. This method offers the advantage that ...

Matthias Ihme; Alison L. Marsden; Heinz Pitsch

2008-02-01T23:59:59.000Z

438

A Draughts Learning System Based on Neural Networks and Temporal Differences: The Impact of an Efficient Tree-Search Algorithm  

Science Conference Proceedings (OSTI)

The NeuroDraughts is a good automatic draughts player which uses temporal difference learning to adjust the weights of an artificial neural network whose role is to estimate how much the board state represented in its input layer by NET-FEATUREMAP is ... Keywords: Alpha-Beta Pruning, Automatic Learning, Checkers, Draughts, Iterative Deepening, Neural Network, Table Hashing, Temporal Difference Learning, Transposition Table, Zobrist Key

Gutierrez Soares Caixeta; Rita Maria Silva Julia

2008-10-01T23:59:59.000Z

439

Customization of the EPRI Artificial Neural Network Short-Term Load Forecaster (ANNSTLF) and User Support for the California Independent System Operator (CA-ISO)  

Science Conference Proceedings (OSTI)

Load forecasting is an important part of power system planning and operation. In the past, forecasting was achieved by extrapolating existing load data combined with other influencing factors. This method is no longer accurate enough. The Artificial Neural Network Short-Term Load Forecaster (ANNSTLF) is a tool for the quick and accurate prediction of hourly loads that provides the level of accuracy required by today's complex and competitive power markets. This report describes all the deliverables for t...

2002-11-19T23:59:59.000Z

440

This document is a preprint of the final paper: Shafiee, Qobad; Vasquez, Juan C.; Guerrero, Josep M.; , "Distributed secondary control for islanded MicroGrids -A networked control systems approach," IECON 2012 -38th Annual Conference on IEEE Industrial El  

E-Print Network (OSTI)

.; , "Distributed secondary control for islanded MicroGrids - A networked control systems approach," IECON 2012 - 38://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6389034&isnumber=6388505 1 Distributed Secondary Control for Islanded MicroGrids ­ A Networked Control presents a novel approach to conceive the secondary control in droop-controlled MicroGrids

Vasquez, Juan Carlos

Note: This page contains sample records for the topic "hughes network systems" 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

Other Innovative Storage Systems  

Science Conference Proceedings (OSTI)

High Efficiency Electrical Energy Storage Using Reversible Solid Oxide Cells: Scott Barnett1; Gareth Hughes1; Kyle Yakal-Kremski1; Zhan Gao1; 1 Northwestern...

442

Measuring network security using dynamic bayesian network  

Science Conference Proceedings (OSTI)

Given the increasing dependence of our societies on networked information systems, the overall security of these systems should be measured and improved. Existing security metrics have generally focused on measuring individual vulnerabilities without ... Keywords: attack graph, intrusion detection, security, security metric

Marcel Frigault; Lingyu Wang; Anoop Singhal; Sushil Jajodia

2008-10-01T23:59:59.000Z

443

Composition Dependent Analysis of Raman Spectra in the Modified Boroaluminosilicate System: Implications for Coupling Between Structural Resonance and Relaxation in the Glass Network  

Science Conference Proceedings (OSTI)

The boroaluminosilicate system was systematically modified by addition of magnesium, sodium and zirconium oxides. Strong bridging silicate bands and narrow and intense nonbridging silicate bands compose the Raman spectra of glasses. The fundamental nonbridging molecular species bands are related to the bridged network bands by the first overtone and signify anharmonic oscillation. At a constant degree of depolymerisation, the nonbridging band intensity depends on the silica content. With decrease in silica content, the bridged network band frequency shifts to a higher value and simultaneously the nonbridging bands intensify. The sharp rise in intensity for the nonbridging bands is attributed to resonant oscillations between the bridged lattice network and nonbridging molecular species. The resonance between the two structural entities possibly occurs in response to relaxation of the bridged network with decrease in silica content. Contributions to enhancement of intensity also presumably arise from resonance in valency bonds and oscillations in the oxygen edge shared polyhedral (ESP) structure for the nonbridging molecular species. The force constant of the ESP species varies as a function of zirconium, sodium and magnesium coordination to apex nonbridging oxygens. The single ESP band transforms to Fermi doublet upon crystallisation to orthosilicate structures of zircon and forsterite. 32 refs.

S. V. Raman; R. S. Czernuszewicz; A. A. Zareba

2004-04-01T23:59:59.000Z

444

Urban Network Practices  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with National Grid. This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. National Grid's U.S. operations, headquartered in Waltham, Massachusetts, serves customers through secondary network systems in multiple cities in New York and New England. This report profiles the practices (p...

2012-02-16T23:59:59.000Z

445

Information Model for Policy-Based Network Security Management  

Science Conference Proceedings (OSTI)

Policy Based Network Management (PBNM) for network security has been paid much attention as a solution to consistent and unified management of security systems including IDS (Intrusion Detection System) and Firewall. In this paper, we define NSPIM (Network ...

Sook-Yeon Kim; Myung-Eun Kim; Kiyoung Kim; Jongsoo Jang

2002-01-01T23:59:59.000Z

446

Supporting QoS in Integrated Ad-Hoc Networks  

Science Conference Proceedings (OSTI)

Ad-hoc networking is becoming a promising solution to increase the radio coverage of wireless systems. Integrated mobile ad-hoc networks (MANETs), considered as multi-hop networks connected to fixed networks through one or more gateways, seem to be very ... Keywords: Ad-hoc networks, EDCA, IEEE 802.11, Infrastructure networks, QoS

Marek Natkaniec; Katarzyna Kosek-Szott; Szymon Szott; Janusz Gozdecki; Andrzej G?owacz; Susana Sargento

2011-01-01T23:59:59.000Z

447

Clustering incorporating shortest paths identifies relevant modules in functional interaction networks  

Science Conference Proceedings (OSTI)

Many biological systems can be modeled as networks. Hence, network analysis is of increasing importance to systems biology. We describe an evolutionary algorithm for selecting clusters of nodes within a large network based upon network topology together ...

Jennifer Hallinan; Matthew Pocock; Stephen Addinall; David A. Lydall; Anil Wipat

2009-03-01T23:59:59.000Z

448

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

449

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

450

Energy-efficient multi-hop medical sensor networking  

Science Conference Proceedings (OSTI)

Wireless sensor networks represent a key technology enabler for enhanced health care and assisted living systems. Recent standardization eorts to ensure compatibility among sensor network systems sold by dierent vendors have produced the IEEE 802.15.4 ... Keywords: 802.15.4, MAC, ZigBee, efficiency, efficient, energy, experiment, medical, networking, networks, routing, scheduling, sensor, system, systems, wireless

A. G. Ruzzelli; R. Jurdak; G. M.P O'Hare; P. Van Der Stok

2007-06-01T23:59:59.000Z

451

QOMB: A wireless network emulation testbed  

Science Conference Proceedings (OSTI)

In this paper we present QOMB, a testbed we designed and implemented for the evaluation of wireless network systems, protocols and applications. The testbed uses the wireless network emulation set of tools QOMET so as to reproduce in a wired network, ... Keywords: emulation, real-time, testbed, wireless networks

Razvan Beuran; Lan Tien Nguyen; Toshiyuki Miyachi; Junya Nakata; Ken-ichi Chinen; Yasuo Tan; Yoichi Shinoda

2009-11-01T23:59:59.000Z

452

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

453

A system for ubiquitous fall monitoring at home via a wireless sensor network and a wearable mote  

Science Conference Proceedings (OSTI)

Accidental falls of our elderly, and physical injuries resulting, represent a major health and economic problem. Falls are the most common cause of serious injuries and are a major health threat in the stratum of older population. Early detection of ... Keywords: Accelerometer, Activities of daily living, Fall detection, Falls in the elderly, Wireless sensor network

Roberto Paoli; Francisco J. Fernndez-Luque; Gins Domnech; Flix Martnez; Juan Zapata; Ramn Ruiz

2012-04-01T23:59:59.000Z

454

A novel defect classification system of cast-resin transformers by neural network under acoustic emission signal  

Science Conference Proceedings (OSTI)

Degraded insulating property of electric equipments will lead to serious accident and great loss for the utilities and customers. Partial discharge detection is an efficient diagnosis method to prevent the failure of electric equipments arising from ... Keywords: acoustic emission, neural network, partial discharge, transformer

Cheng-Chien Kuo; Teng-Fa Tsao

2007-04-01T23:59:59.000Z

455

MP-Draughts: a multiagent reinforcement learning system based on MLP and Kohonen-SOM neural networks  

Science Conference Proceedings (OSTI)

This paper presents MP-Draughts (MultiPhase-Draughts): a multiagent environment for Draughts, where one agent - named IIGA- is built and trained such as to be specialized for the initial and the intermediate phases of the games and the remaining ones ... Keywords: Kohonen self-organizing maps, clustering, draughts, games, machine learning, neural networks, reinforcement learning, temporal difference

Valquiria Aparecida Rosa Duarte; Rita Maria Silva Julia; Ayres Roberto Araujo Barcelos; Alana Bueno Otsuka

2009-10-01T23:59:59.000Z

456

Wireless Sensor Network Fundamentals  

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

Wireless Sensor Network Fundamentals Wireless Sensor Network Fundamentals Speaker(s): Steven Lanzisera Date: February 8, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Kevin Kircher Wireless sensor networks have been promising to provide easy data collection and control capability to applications ranging from scientific data collection, disaster recover, national security, and more. The user experience, however, has been filled with confusing terminology, complicated systems, and a lack of interoperability between vendors. Users with a background in the technology and fundamentals are better able to understand system capabilities, make decisions, and end up with a network that meets their needs. Although a sufficient coverage of this topic is at least a semester course, the goal of this talk is to give a brief

457

Context-Dependent Network Agents  

Science Conference Proceedings (OSTI)

The design of dynamic networks and their embedded agents is one of the most challenging tasks in modern technology. This is particularly true of the U.S. power grid, the target application for the technology being developed by the Context-Dependent Network Agents (CDNA) Consortium in the EPRI/DOD Initiative on Complex Interactive Networks/Systems. This report develops the thesis that the agility and robustness of networks can be improved significantly by making some of the agents in the network more cont...

2000-05-23T23:59:59.000Z

458

Efficient Energy Transfer in Light-Harvesting Systems, II: Quantum-Classical Comparison, Flux Network, and Robustness Analysis  

E-Print Network (OSTI)

Following the calculation of optimal energy transfer in thermal environment in our first paper (Wu et al., New J. Phys., 2010, 12, 105012), full quantum dynamics and leading-order `classical' hopping kinetics are compared in the seven-site Fenna-Matthews-Olson (FMO) protein complex. The difference between these two dynamic descriptions is due to higher-order quantum corrections. Two thermal bath models, classical white noise (the Haken-Strobl-Reineker model) and quantum Debye model, are considered. In the seven-site FMO model, we observe that higher-order corrections lead to negligible changes in the trapping time or in energy transfer efficiency around the optimal and physiological conditions (2% in the HSR model and 0.1% in the quantum Debye model for the initial site at BChl 1). However, using the concept of integrated flux, we can identify significant differences in branching probabilities of the energy transfer network between hopping kinetics and quantum dynamics (26% in the HSR model and 32% in the quantum Debye model for the initial site at BChl 1). This observation indicates that the quantum coherence can significantly change the distribution of energy transfer pathways in the flux network with the efficiency nearly the same. The quantum-classical comparison of the average trapping time with the removal of the bottleneck site, BChl 4, demonstrates the robustness of the efficient energy transfer by the mechanism of multi-site quantum coherence. To reconcile with the latest eight-site FMO model, the quantum-classical comparison with the flux network analysis is summarized in the appendix. The eight-site FMO model yields similar trapping time and network structure as the seven-site FMO model but leads to a more disperse distribution of energy transfer pathways.

Jianlan Wu; Fan Liu; Jian Ma; Robert J. Silbey; Jianshu Cao

2011-09-27T23:59:59.000Z

459

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

460

Assessing Network Infrastructure Vulnerabilities to Physical ...  

Science Conference Proceedings (OSTI)

... networks, air traffic control systems, and water distribution systems ... is that we consider the vulnerability to this ... States is buried in the ground within a ...

1999-11-05T23:59:59.000Z

Note: This page contains sample records for the topic "hughes network systems" 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

Toward network data independence  

Science Conference Proceedings (OSTI)

A number of researchers have become interested in the design of global-scale networked systems and applications. Our thesis here is that the database community's principles and technologies have an important role to play in the design of these systems. ...

Joseph M. Hellerstein

2003-09-01T23:59:59.000Z

462

Evidential structures and metrics for network forensics  

Science Conference Proceedings (OSTI)

Evaluation of forensics evidence is an essential step in proving the malicious intents of an attacker or adversary and the severity of the damages caused to any network. This paper takes a step forward showing how security metrics can be used to sustain ... Keywords: CVSS, NFR, common vulnerability scoring system, evidential database, evidential structure, network attacks, network evidence, network forensic readiness, network forensics, security metrics

Ahmad R. Amran; Raphael C-W. Phan; David J. Parish; John N. Whitley

2010-12-01T23:59:59.000Z

463

On scalable attack detection in the network  

Science Conference Proceedings (OSTI)

Current intrusion detection and prevention systems seek to detect a wide class of network intrusions (e.g., DoS attacks, worms, port scans) at network vantage points. Unfortunately, even today, many IDS systems we know of keep per-connection or per-flow ... Keywords: data structures, denial of service, network attacks, routers, scanning, streaming algorithms, syn flooding

Ramana Rao Kompella; Sumeet Singh; George Varghese

2007-02-01T23:59:59.000Z

464

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

465

A MATLAB function for Network Environ Analysis  

Science Conference Proceedings (OSTI)

Network Environ Analysis is a formal, quantitative methodology to describe an object's within system ''environ''ment [Patten, B.C., 1978a. Systems approach to the concept of environment. Ohio Journal of Science 78, 206-222]. It provides a perspective ... Keywords: Ecological Modelling, Ecological Network Analysis, Network Environ Analysis

Brian D. Fath; Stuart R. Borrett

2006-03-01T23:59:59.000Z

466

Efficient energy transfer in light-harvesting systems: Quantum-classical comparison, flux network, and robustness analysis  

SciTech Connect

Following the calculation of optimal energy transfer in thermal environment in our first paper [J. L. Wu, F. Liu, Y. Shen, J. S. Cao, and R. J. Silbey, New J. Phys. 12, 105012 (2010)], full quantum dynamics and leading-order 'classical' hopping kinetics are compared in the seven-site Fenna-Matthews-Olson (FMO) protein complex. The difference between these two dynamic descriptions is due to higher-order quantum corrections. Two thermal bath models, classical white noise (the Haken-Strobl-Reineker (HSR) model) and quantum Debye model, are considered. In the seven-site FMO model, we observe that higher-order corrections lead to negligible changes in the trapping time or in energy transfer efficiency around the optimal and physiological conditions (2% in the HSR model and 0.1% in the quantum Debye model for the initial site at BChl 1). However, using the concept of integrated flux, we can identify significant differences in branching probabilities of the energy transfer network between hopping kinetics and quantum dynamics (26% in the HSR model and 32% in the quantum Debye model for the initial site at BChl 1). This observation indicates that the quantum coherence can significantly change the distribution of energy transfer pathways in the flux network with the efficiency nearly the same. The quantum-classical comparison of the average trapping time with the removal of the bottleneck site, BChl 4, demonstrates the robustness of the efficient energy transfer by the mechanism of multi-site quantum coherence. To reconcile with the latest eight-site FMO model which is also investigated in the third paper [J. Moix, J. L. Wu, P. F. Huo, D. F. Coker, and J. S. Cao, J. Phys. Chem. Lett. 2, 3045 (2011)], the quantum-classical comparison with the flux network analysis is summarized in Appendix C. The eight-site FMO model yields similar trapping time and network structure as the seven-site FMO model but leads to a more disperse distribution of energy transfer pathways.

Wu Jianlan [Physics Department, Zhejiang University, 38 ZheDa Road, Hangzhou, Zhejiang 310027 (China); Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139 (United States); Liu Fan; Silbey, Robert J.; Cao Jianshu [Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139 (United States); Ma Jian [Physics Department, Zhejiang University, 38 ZheDa Road, Hangzhou, Zhejiang 310027 (China)

2012-11-07T23:59:59.000Z

467

Modeling net ecosystem metabolism with an artificial neural network and Bayesian belief network  

Science Conference Proceedings (OSTI)

Artificial neural networks (ANNs) and Bayesian belief networks (BBNs) utilizing select environmental variables were developed and evaluated, with the intent to model net ecosystem metabolism (a proxy for system trophic state) within a freshwater wetland. ... Keywords: Artificial neural networks, Bayesian belief networks, Knowledge extraction, Net ecosystem metabolism

William A. Young, II; David F. Millie; Gary R. Weckman; Jerone S. Anderson; David M. Klarer; Gary L. Fahnenstiel

2011-10-01T23:59:59.000Z

468

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

469

Dynamical regimes and learning properties of evolved Boolean networks  

Science Conference Proceedings (OSTI)

Boolean networks (BNs) have been mainly considered as genetic regulatory network models and are the subject of notable works in complex systems biology literature. Nevertheless, in spite of their similarities with neural networks, their potential as ... Keywords: Boolean networks, Density classification problem, Machine learning, Metaheuristics, State-controlled Boolean network

Stefano Benedettini; Marco Villani; Andrea Roli; Roberto Serra; Mattia Manfroni; Antonio Gagliardi; Carlo Pinciroli; Mauro Birattari

2013-01-01T23:59:59.000Z

470

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

471

A New Approach in Advance Network Reservation and Provisioning for High-Performance Scientific Data Transfers  

E-Print Network (OSTI)

high speed networks such as ESnet (Energy Sciences Network).reservation systems, i.e. ESnets OSCARS (On- demand SecureEnergy Sciences Network (ESnet). Delivering network-as- a-

Balman, Mehmet

2011-01-01T23:59:59.000Z

472

Ad Hoc mobility management with uniform quorum systems  

Science Conference Proceedings (OSTI)

Keywords: Ad hoc network, balanced incomplete block design, data distribution, mobility management, quorum system, reconfigurable wireless network, uniform quorum system

Zygmunt J. Haas; Ben Liang

1999-04-01T23:59:59.000Z

473

Developing an Operational, Surface-Based, GPS, Water Vapor Observing System for NOAA: Network Design and Results  

Science Conference Proceedings (OSTI)

The need for a reliable, low-cost observing system to measure water vapor in the atmosphere is incontrovertible. Experiments have shown the potential for using Global Positioning System (GPS) receivers to measure total precipitable water vapor ...

Daniel E. Wolfe; Seth I. Gutman

2000-04-01T23:59:59.000Z

474

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

475

Superionic to superionic phase change in water: consequences for the interiors of Uranus and Hugh F. Wilson, Michael L. Wong1  

E-Print Network (OSTI)

for the hydro- gen atoms. The difference in Helmholtz free energy between systems 1 and 2 governed by potential of Astronomy, University of California, Berkeley Using density functional molecular dynamics free energy (DFT) free energy cal- culations, that the bcc phase is thermodynamically unstable relative to a denser

Militzer, Burkhard

476

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

477

ESnet Network Measurement Current Status &  

E-Print Network (OSTI)

1 ESnet Network Measurement Current Status & Future Plans Joe Metzger - with slides copied from Networking for the Future of Science #12;2 Overview · ESnet Services ­ New content · LHC Requirements problems and get more systems deployed ­ Regular scheduled bandwidth testing · Internal to ESnet IP & SDN

478

Networked Acoustic Modems for Real-Time Data Delivery from Distributed Subsurface Instruments in the Coastal Ocean: Initial System Development and Performance  

Science Conference Proceedings (OSTI)

Results are reported from field tests of networked acoustic modems used for wireless real-time delivery of oceanographic measurements from a distributed array of subsurface instruments in coastal waters. The network demonstrated consists of ...

Daniel L. Codiga; Joseph A. Rice; Paul A. Baxley

2004-02-01T23:59:59.000Z

479

Novel Technique of Sizing the Stand-Alone Photovoltaic Systems Using the Radial Basis Function Neural Networks: Application in Isolated Sites  

E-Print Network (OSTI)

The objective of this work is to investigate the Radial Basis Function Neural Networks (RBFN) to identifying and modeling the optimal sizing couples of stand-alone photovoltaic (PV) system using a minimum of input data, These optimal couples allow to the users of stand-alone PV systems to determine the number of solar panel modules and storage batteries necessary to satisfy a given consumption. The advantage of this model is to estimate of the sizing PV system in any site in Algeria particularly in isolated sites, where the global solar radiation data is not always available. A RBFN has been trained by using 200 known sizing couples data corresponding to 200 locations. In this way, it was trained to accept and even handle a number of unusual case, known sizing couples were subsequently used to investigate the accuracy of prediction the training of the RBFN model was performed with adequate accuracy. Subsequently, the unknown validation sizing couples set produced very set accurate predictions with the correlation coefficient between the actual and the RBFN model identified data of 98% was obtained. This result indicates that the proposed method can be successfully used for estimating of optimal sizing couples of PV systems for any locations in Algeria, but the methodology can be generalized using different locations in the world.

Mellit, A.; Benghanme, M.; Arab, A. H.; Guessoum, A.

2004-01-01T23:59:59.000Z

480

State Partners  

Science Conference Proceedings (OSTI)

... Lockheed Martin (formerly Martin Marietta Corporation) . Raytheon Company (formerly Hughes Aircraft Company) . ... Liberty Health Systems . ...

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481

State Partners  

Science Conference Proceedings (OSTI)

... Kaiser Foundation Health Plan of Colorado . Liberty Health Systems . ... Raytheon Company (formerly Hughes Aircraft Company) . ...

482

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

483

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

484

Social Networks Applied  

Science Conference Proceedings (OSTI)

Social networks have interesting properties. Building computational models of these networks can help us understand and exploit them. This issue's essays examine applications of these networks' properties. Keywords: social networks, ontology, Semantic Web, network topology, friend of a friend

Steffen Staab; Pedro Domingos; Peter Mika; Jennifer Golbeck; Li Ding; Tim Finin; Anupam Joshi; Andrzej Nowak; Robin R. Vallacher

2005-01-01T23:59:59.000Z

485

Optimal mobile actuator/sensor network motion strategy for parameter estimation in a class of cyber physical systems  

Science Conference Proceedings (OSTI)

This paper introduces a framework to solve the problem of determining optimal sensors and actuators trajectories so as to estimate a set of unknown parameters in what constitutes a cyber-physical system (CPS). Given a distributed system's set of partial ...

Christophe Tricaud; YangQuan Chen

2009-06-01T23:59:59.000Z

486

Technical Trading Rules as a Prior Knowledge to a Neural Networks Prediction System for the S&P 500 Index  

E-Print Network (OSTI)

Index Tim C h e n o ~ e t h l - ~ t ~ Zoran ObradoviC' Steven Lee4 School of Electrical Engineering historical information a chal- lenging problem. Our experience indicates that in markets modeling through-component system. The system performance is measured by computing the annual rate of return and the return per

Obradovic, Zoran

487

Prediction and Optimization of a Ceramic Casting Process Using A Hierarchical Hybrid System of Neural Networks and Fuzzy Logic  

E-Print Network (OSTI)

optimization for use in the ceramics industry. A prediction module estimates two quality metrics of slipPrediction and Optimization of a Ceramic Casting Process Using A Hierarchical Hybrid System)1 Department of Industrial and Systems Engineering Dunstan Hall Auburn University Auburn University

Smith, Alice E.

488

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

489

Tutorial on biological networks  

Science Conference Proceedings (OSTI)

Understanding how the functioning of a biological system emerges from the interactions among its components is a long-standing goal of network science. Fomented by developments in high-throughput technologies to characterize biomolecules and their interactions, ... Keywords: Biological Data Mining, Data Mining Software Tools, Science and Technology

Francisco G. Vital-Lopez; Vesna Memievi?; Bhaskar Dutta

2012-07-01T23:59:59.000Z

490

Microsystem process networks  

DOE Patents (OSTI)

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

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

2007-09-18T23:59:59.000Z

491

Microsystem process networks  

DOE Patents (OSTI)

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

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

2010-01-26T23:59:59.000Z

492

Microsystem process networks  

DOE Patents (OSTI)

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

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

2006-10-24T23:59:59.000Z

493

Edison Systems Technology Documentation  

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

Technology Documentation Systems Technology Documentation Downloads CrayXC30Networking.pdf | Adobe Acrobat PDF file Cray XC30 Networking SonexionBrochure.pdf | Adobe Acrobat PDF...

494

Towards A Network-of-Networks Framework for Cyber Security  

Science Conference Proceedings (OSTI)

Networks-of-networks (NoN) is a graph-theoretic model of interdependent networks that have distinct dynamics at each network (layer). By adding special edges to represent relationships between nodes in different layers, NoN provides a unified mechanism to study interdependent systems intertwined in a complex relationship. While NoN based models have been proposed for cyber-physical systems, in this paper we build towards a three-layer NoN model for an enterprise cyber system. Each layer captures a different facet of a cyber system. We then discuss the potential benefits of graph-theoretic analysis enabled from such a model. Our goal is to provide a novel and powerful tool for modeling and analyzing problems in cyber security.

Halappanavar, Mahantesh; Choudhury, Sutanay; Hogan, Emilie A.; Hui, Peter SY; Johnson, John R.; Ray, Indrajit; Holder, Lawrence B.

2013-06-07T23:59:59.000Z

495

Network Mobility Home Network Models  

E-Print Network (OSTI)

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The IETF Trust (2007). This paper documents some of the usage patterns and the associated issues when deploying a Home Network for Network Mobility (NEMO)enabled Mobile Routers, conforming to the NEMO Basic Support. The aim here is specifically to provide some examples of organization of the Home Network, as they were discussed in NEMO-related mailing

P. Thubert; Cisco Systems; R. Wakikawa; V. Devarapalli

2007-01-01T23:59:59.000Z

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