National Library of Energy BETA

Sample records for unlicensed wireless fiber

  1. JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 4, FEBRUARY 15, 2010 1 Fiber-Wireless Networks and

    E-Print Network [OSTI]

    Bakaul, Masuduzzaman

    IEEE Proof W eb Version JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 4, FEBRUARY 15, 2010 1 Fiber-Wireless Novak, Fellow, IEEE, and Rod Waterhouse, Senior Member, IEEE Abstract--Hybrid fiber-wireless networks incorporating WDM technology for fixed wireless access operating in the sub-mil- limeter-wave and millimeter

  2. Automation of a Wireless Cotton Module Tracking System for Cotton Fiber Quality Mapping 

    E-Print Network [OSTI]

    Sjolander, Andrew J.

    2010-10-12

    developed a wireless-GPS system that tracks where a module of cotton comes from within a field. This system is a necessary component in mapping fiber quality, which is a major determiner of price and thus profit. Three drawbacks to the previous wireless...

  3. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 59, NO. 3, MARCH 2010 1487 Fair Bandwidth Allocation in Wireless Mesh

    E-Print Network [OSTI]

    Tang, Jian "Neil"

    Identifier 10.1109/TVT.2009.2038478 emerging cognitive radios, unlicensed wireless users (a.k.a. secondary, as long as the licensed wireless users (a.k.a. primary users) in these spectrum bands are not disrupted [2

  4. Intrusion detection and monitoring for wireless networks.

    SciTech Connect (OSTI)

    Thomas, Eric D.; Van Randwyk, Jamie A.; Lee, Erik J.; Stephano, Amanda; Tabriz, Parisa; Pelon, Kristen; McCoy, Damon (University of Colorado, Boulder); Lodato, Mark; Hemingway, Franklin; Custer, Ryan P.; Averin, Dimitry; Franklin, Jason; Kilman, Dominique Marie

    2005-11-01

    Wireless computer networks are increasing exponentially around the world. They are being implemented in both the unlicensed radio frequency (RF) spectrum (IEEE 802.11a/b/g) and the licensed spectrum (e.g., Firetide [1] and Motorola Canopy [2]). Wireless networks operating in the unlicensed spectrum are by far the most popular wireless computer networks in existence. The open (i.e., proprietary) nature of the IEEE 802.11 protocols and the availability of ''free'' RF spectrum have encouraged many producers of enterprise and common off-the-shelf (COTS) computer networking equipment to jump into the wireless arena. Competition between these companies has driven down the price of 802.11 wireless networking equipment and has improved user experiences with such equipment. The end result has been an increased adoption of the equipment by businesses and consumers, the establishment of the Wi-Fi Alliance [3], and widespread use of the Alliance's ''Wi-Fi'' moniker to describe these networks. Consumers use 802.11 equipment at home to reduce the burden of running wires in existing construction, facilitate the sharing of broadband Internet services with roommates or neighbors, and increase their range of ''connectedness''. Private businesses and government entities (at all levels) are deploying wireless networks to reduce wiring costs, increase employee mobility, enable non-employees to access the Internet, and create an added revenue stream to their existing business models (coffee houses, airports, hotels, etc.). Municipalities (Philadelphia; San Francisco; Grand Haven, MI) are deploying wireless networks so they can bring broadband Internet access to places lacking such access; offer limited-speed broadband access to impoverished communities; offer broadband in places, such as marinas and state parks, that are passed over by traditional broadband providers; and provide themselves with higher quality, more complete network coverage for use by emergency responders and other municipal agencies. In short, these Wi-Fi networks are being deployed everywhere. Much thought has been and is being put into evaluating cost-benefit analyses of wired vs. wireless networks and issues such as how to effectively cover an office building or municipality, how to efficiently manage a large network of wireless access points (APs), and how to save money by replacing an Internet service provider (ISP) with 802.11 technology. In comparison, very little thought and money are being focused on wireless security and monitoring for security purposes.

  5. Radio-over-Fiber based architecture for seamless wireless indoor communication in the 60 GHz band q,qq

    E-Print Network [OSTI]

    Langendoen, Koen

    internet access in business and household environments. Fiber-to- the-home (FTTH) deployments are nowadays support, comprising both switched Ethernet-based and passive optical network (PON)-based architectures [2, with the proliferation of cheap and easy-to-deploy Access Points (AP) in households, build- ings, airports, shopping

  6. Two-Hop Relaying in CDMA Networks Using the Unlicensed Bands

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    CDMA networks. In this envisioned network, the WTs (Wireless Terminals ­ portable devices used link with the BS (at the required rates) seek the assistance of those WTs which can; in other words, whenever needed, some WTs are used as relayers for some other WTs (relayees) if this is possible. In a two

  7. Measurement and Analysis of the Error Characteristics of an In-Building Wireless Network

    E-Print Network [OSTI]

    Steenkiste, Peter

    on fiber or electrical connections have excellent error characteris- tics but that wireless networksMeasurement and Analysis of the Error Characteristics of an In-Building Wireless Network David fdavide,prsg@cs.cmu.edu Abstract There is general belief that networks based on wireless technolo- gies

  8. Wireless Urban Sensing Systems

    E-Print Network [OSTI]

    2006-01-01

    Secure positioning of wireless devices with application toSecure positioning in wireless networks,’’ IEEE Journal onIssue on Security in Wireless Ad Hoc Networks, February

  9. Digital Wireless Communication

    E-Print Network [OSTI]

    Heath Jr., - Robert W.

    Digital Wireless Communication: Physical Layer Exploitation Wireless Networking and Communications 30, 12 #12;Wireless is Everywhere cellular networks local area networks personal area networks emerging applications Thursday, August 30, 12 #12;Where is Wireless Taught? 3 Undergraduate Graduate

  10. Cooperative Wireless Network Behnaam Aazhang

    E-Print Network [OSTI]

    Aazhang, Behnaam

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

  11. Applying an intelligent and automated emissions measurement system to characterize the RF environment for supporting wireless technologies

    SciTech Connect (OSTI)

    Keebler, P. F.; Phipps, K. O. [EPRI Solutions, 942 Corridor Park Blvd, Knoxville, TN 37932 (United States)

    2006-07-01

    The use of wireless technologies in commercial and industrial facilities has grown significantly in the past several years. New applications of wireless technologies with increasing frequency and varying radiated power are being developed everyday. Wireless application specialists and end users have already identified several sources of electromagnetic interference (EMI) in these facilities. Interference has been reported between wireless devices and between these devices and other types of electronic equipment either using frequencies in the unlicensed wireless spectrum or equipment that may generate undesired man-made noise in this spectrum. Facilities that are not using the wireless band should verify the spectral quality of that band and the electromagnetic compatibility (EMC) integrity of safety-related power and signal cables before installing wireless technologies. With the introduction of new wireless devices in the same electromagnetic space where analog and digital I and C systems and cables must co-exist, the ability of facility managers to manage their spectra will dictate the degree of interference between wireless devices and other electronic equipment. Because of the unknowns associated with interference with analog and digital I and C systems in the wireless band, nuclear power plants have been slow to introduce wireless technologies in plant areas. With the application of newly developed advanced radiated emissions measurement systems that can record, process, and analyze radiated and conducted emissions in a cost-effective manner, facility managers can more reliably characterize potential locations for wireless technologies, including potential coupling effects with safety-related power and signal cables, with increased confidence that the risks associated with creating an interference can be significantly reduced. This paper will present an effective philosophy already being used in other mission-critical applications for managing EMC, an overview of wireless emissions sources, the need for EMC characterization of power and signal cables with exposure to wireless devices, and an intelligent and automated emissions measurement system. Such a system can be used in nuclear power plants to determine the spectral quality of the wireless band, the EMC characterization of power and signal cables, and if wireless technologies can be collocated in plants while reducing the risk of interference with I and C systems. (authors)

  12. PHENOMENOLOGY Wireless Channel Modeling

    E-Print Network [OSTI]

    Giridhar, K.

    PHENOMENOLOGY Wireless Channel Modeling Clarke's, Jakes' and modified Jakes' models Koyalkar Raman? What is channel modeling? Wireless channel modeling Modeling Fading ­ Rayleigh Clarke's, Jakes, they are short ranged, motion restricted. Channel Wired - Single Path - Motion Restricted Wireless - Multipath

  13. Wireless Network Esercitazioni

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Wireless Network Esercitazioni Alessandro Villani avillani@science.unitn.it #12;Wireless Router WRT54G LINKSYS #12;WRT54G È un router Wireless: 1 porta Ethernet verso la LAN esterna 4 porte Ethernet

  14. Wireless Network Esercitazioni

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Wireless Network Esercitazioni Alessandro Villani avillani@science.unitn.it #12;Ethereal #12 wireless LAN (WLAN) Non è ancora realmente utilizzato Scaricabile all'indirizzo: http

  15. Wireless networks for the developing world

    E-Print Network [OSTI]

    Neto, Maria Isabel A. S., 1974-

    2004-01-01

    As radio technologies and public policies evolve, an increasing amount of spectrum is being set aside for transmission use without a license. These license-exempt, or "unlicensed" bands, include 2.4 GHz and 5 GHz in the ...

  16. Mobility in Wireless Sensor Networks

    E-Print Network [OSTI]

    Mehta, Ankur Mukesh

    2012-01-01

    4 Wireless Protocol Modifications 4.1contains a distributed wireless network with per- vasiveprocessing, control, and wireless communication on a board

  17. Wireless System Tracks Esophageal

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Wireless System Tracks Esophageal Reflux WEDNESDAY, June 20 (HealthDay News) -- A wireless and transmits that information to a wireless sensor worn around the patient's neck. Details about this system HealthDay · Wireless System Tracks Esophageal Reflux · Experts Debate Limits on Implanted Defibrillator

  18. WIRELESS DATA COMMUNICATIONS

    E-Print Network [OSTI]

    Kranakis, Evangelos

    1 WIRELESS DATA COMMUNICATIONS Ce n'est pas possible!. . .This thing speaks! Dom Pedro II, 1876 topic of signaling that makes communication possible in all wireless systems. Nowadays, wireless Michel Barbeau and Evangelos Kranakis 2007 John Wiley & Sons, Ltd COPYRIGHTED MATERIAL #12;2 WIRELESS

  19. Wireless Network Esercitazioni

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Wireless Network Esercitazioni Alessandro Villani avillani@science.unitn.it #12;Configurazione AP sito CISCO: http://www.cisco.com/public/sw-center/sw- wireless.shtml La versione attuale è: c1200-k9w7;AP 1200: Configurazione Wireless Ruolo in una rete Wireless: Root o repeater Speed: Basic: traffico

  20. Mapping in-field cotton fiber quality and relating it to soil moisture 

    E-Print Network [OSTI]

    Ge, Yufeng

    2009-05-15

    - and GPS-based system was fabricated and developed for automated module-level fiber quality mapping. The system is composed of several subsystems distributed among harvest vehicles, and the main components of the system include a GPS receiver, wireless...

  1. Wireless Network Economics and Games

    E-Print Network [OSTI]

    Huang, Jianwei

    Wireless Network Economics and Games Jianwei Huang Network Communications & Economics Lab-play-games/id642100914! ! · J. Huang and L. Gao, "Wireless Network Pricing," Synthesis Lectures on Communication Networks://jianwei.ie.cuhk.edu.hk/publication/Book/ WirelessNetworkPricing.pdf! ! #12;Why Wireless Economics and Games? #12;Wireless Utopia · Wireless spectrum

  2. Wireless Scheduling Mung Chiang

    E-Print Network [OSTI]

    Chiang, Mung

    Wireless Scheduling Mung Chiang Electrical Engineering, Princeton University WiOpt Seoul, Korea June 23, 2009 #12;Outline · Structured teaser on wireless scheduling · Focus on key ideas and 10 open

  3. Wireless Network Esercitazioni

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Wireless Network Esercitazioni Alessandro Villani avillani@science.unitn.it #12;WEP Cracking #12 (Nomina sunt consequentia rerum) quello di fornire sul canale wireless un livello di sicurezza equivalente

  4. uncorrectedproof Wireless Pers Commun

    E-Print Network [OSTI]

    Liu, K. J. Ray

    uncorrectedproof Wireless Pers Commun DOI 10.1007/s11277-007-9359-z Cooperative Communication Protocols in Wireless Networks: Performance Analysis and Optimum Power Allocation Weifeng Su · Ahmed K communications in wireless networks with2 either decode-and-forward (DF) or amplify-and-forward (AF) cooperation

  5. Wireless Network Esercitazioni

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Wireless Network Esercitazioni Alessandro Villani avillani@science.unitn.it #12;Reti Ad Hoc #12;Reti Ad Hoc (IBSS) Tipicamente le wireless LANs che conosciamo utilizzano la modalità "infrastrutturata Hoc (IBSS) La modalità Ad Hoc permette agli utenti di costituire una wireless LAN autonomamente

  6. THE PLATFORMS ENABLING WIRELESS

    E-Print Network [OSTI]

    Scheuermann, Peter

    THE PLATFORMS ENABLING WIRELESS SENSOR NETWORKS By Jason Hill, Mike Horton, Ralph Kling always-on power requirements. Unlike cell phones and wireless laptops, periodic recharging is not possible for most wireless sensor net- works. In many cases, devices are placed in the field for years

  7. Wireless World Research Forum

    E-Print Network [OSTI]

    Sasse, Angela

    Wireless World Research Forum Working Group 1 IEEE Communications Magazine Article Draft Considering the User in the Wireless World Authors: Ken Crisler (Motorola, US) Andrew Aftelak (Motorola, UK Dainesi (University of Pavia, Italy) Thea Turner (Motorola, US) #12;Abstract The Wireless World Research

  8. Carbon Fiber

    SciTech Connect (OSTI)

    McGetrick, Lee

    2014-04-17

    Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

  9. Carbon Fiber

    ScienceCinema (OSTI)

    McGetrick, Lee

    2014-07-23

    Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

  10. Fiber Optics

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

    said Todd Eckman, vice president of Information Management for MSA. "This new fiber optics will benefit DOE, Benton PUD and NoaNet (Northwest Open Access Network) users. This,...

  11. Wireless Antennas -Making Wireless Communications Perform Like Wireline Communications

    E-Print Network [OSTI]

    Hua, Yingbo

    1 Wireless Antennas - Making Wireless Communications Perform Like Wireline Communications Yingbo first provide an overview of some of the latest developments in wireless communications using multiple of wireless antennas or wireless relays that are distributed between a source and a destination. We propose

  12. Wireless Networks III, Fall 05 Lecture 2. Wireless TCP

    E-Print Network [OSTI]

    Schwefel, Hans-Peter

    Wireless Networks III, Fall 05 Lecture 2. Wireless TCP Exercises 1. TCP Performance: GPRS Scenario or re-orderings occur.] c) Now consider cases of exactly one segment loss on the wireless link. Consider:] The network is now wireless and the wireless link causes an additional packet loss of p'=2%. Furthermore

  13. Wireless adiabatic power transfer

    SciTech Connect (OSTI)

    Rangelov, A.A., E-mail: rangelov@phys.uni-sofia.bg [Department of Physics, Sofia University, James Bourchier 5 blvd., 1164 Sofia (Bulgaria); Suchowski, H.; Silberberg, Y. [Department of Physics of Complex System, Weizmann Institute of Science, Rehovot 76100 (Israel); Vitanov, N.V. [Department of Physics, Sofia University, James Bourchier 5 blvd., 1164 Sofia (Bulgaria)

    2011-03-15

    Research Highlights: > Efficient and robust mid-range wireless energy transfer between two coils. > The adiabatic energy transfer is analogous to adiabatic passage in quantum optics. > Wireless energy transfer is insensitive to any resonant constraints. > Wireless energy transfer is insensitive to noise in the neighborhood of the coils. - Abstract: We propose a technique for efficient mid-range wireless power transfer between two coils, by adapting the process of adiabatic passage for a coherently driven two-state quantum system to the realm of wireless energy transfer. The proposed technique is shown to be robust to noise, resonant constraints, and other interferences that exist in the neighborhood of the coils.

  14. Context-aware computing for wireless networks

    E-Print Network [OSTI]

    Ergüt, Salih

    2010-01-01

    a fourty dollar wireless router offers similar services tomechanism for wireless mesh networks where routers benefit

  15. Chapters 6 & 8 Wireless Networks

    E-Print Network [OSTI]

    Lu, Enyue "Annie"

    Chapters 6 & 8 Wireless Networks and Security Computer Networking:ATop Down Approach 6th edition.W. Ross, All Rights Reserved Wireless, Mobile Networks 6-1 #12;Wireless, Mobile Networks 6-2 Ch. 6: Wireless and Mobile Networks Background: # wireless (mobile) phone subscribers now exceeds # wired phone

  16. Survivability Considerations in Wireless Networks

    E-Print Network [OSTI]

    Ning, Jianxia

    2012-01-01

    Forensics Analysis of Packet Losses in Wireless Networks 2.1Neighbor Discovery in 60 GHz Indoor Wireless Networks 4.1in Wireless Networks . . . . . . . . . . . . . 4.2.4

  17. Cooperation Incentives for Wireless Networks

    E-Print Network [OSTI]

    Wu, Chuchu

    2015-01-01

    incentives in multi-hop wireless networks. ” In INFOCOM,for offloading traffic from LTE network to wireless peer-to-reputation sys- tem for wireless mesh networks using network

  18. Wireless Networking | ornl.gov

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

    Wireless Networking A PDF version of these instructions is also available. As a visitor to Oak Ridge National Laboratory (ORNL), access to the ORNL wireless network is available...

  19. Wireless Network Intrinsic Secrecy

    E-Print Network [OSTI]

    Rabbachin, Alberto

    Wireless secrecy is essential for communication confidentiality, health privacy, public safety, information superiority, and economic advantage in the modern information society. Contemporary security systems are based on ...

  20. Secure and Wireless Improving TCP performance over wireless links

    E-Print Network [OSTI]

    Kurose, Jim

    Secure and Wireless Networks Improving TCP performance over wireless links Secure leader election in wireless networks Additional Projects In ter-Ara Rekey ing Al gorithms for mobile networks http analysisofhierarchical, s ubset differencerekeying (joint with Nortel) - hidden Markov model characterization of wireless

  1. Wireless Insufflation for Wireless Capsule Endoscopy Byron Smith

    E-Print Network [OSTI]

    Wireless Insufflation for Wireless Capsule Endoscopy By Byron Smith Thesis Submitted to the Faculty to distend tissue. In an effort to bring this functionality to wireless capsule endoscopy, the present, fabricated and tested to demonstrate the feasibility of wireless capsule insufflation. iv #12;Contents

  2. Wireless Data Communication, Fall 03 Lecture 4. Wireless TCP

    E-Print Network [OSTI]

    Schwefel, Hans-Peter

    Wireless Data Communication, Fall 03 Lecture 4. Wireless TCP Exercises 1. TCP Performance: GPRS cases of exactly one segment loss on the wireless link. Consider therefore the following two cases i] implementation of an appropriate algorithm, e.g. bi-section). c) [Optional, if time:] The network is now wireless

  3. Outage Optimum Routing for Wireless Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2011-01-01

    Outage Optimum Routing for Wireless Networks B. Amiri, H. R.of wireless network outage probability in a fadinguse analytical calculation of outage probability in wireless

  4. Transmission Power Management for Wireless Health Applications

    E-Print Network [OSTI]

    Amini, Navid

    2012-01-01

    J. Kaiser, “Microleap: Energy-aware wireless sensor platformError through Energy-Efficient Wireless Sensor Networks,”metrics in energy constrained wireless sensor networks,

  5. Wireless Demand Response Controls for HVAC Systems

    E-Print Network [OSTI]

    Federspiel, Clifford

    2010-01-01

    conditioning. Figure 2: Wireless discharge air temperatureWireless Demand Response Controls for HVAC Systems Cliffordcontrol software and wireless hardware that could enable

  6. Wireless Magnetic Sensor Applications in Transportation Infrastructure

    E-Print Network [OSTI]

    Sanchez, Rene Omar

    2012-01-01

    2.2 Wireless Magnetic Sensors Vehicle Detection2.3 Vehicle Re-Identification Using Wireless MagneticPerformance iv 6 Wireless Magnetic Sensor Applications for

  7. Carbon Fiber Consortium | Partnerships | ORNL

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

    Carbon Fiber Consortium SHARE Carbon Fiber Consortium Oak Ridge Carbon Fiber Composites Consortium The Oak Ridge Carbon Fiber Composites Consortium was established in 2011 to...

  8. Wireless Communications Device Policy & Procedures

    E-Print Network [OSTI]

    Wireless Communications Device Policy & Procedures Effective Date: October 1, 2012 Page 1 Revised staff eligibility for a wireless communication device b. Define the process for obtaining a wireless Wireless devices and plans will be provided by StFX for the following employees: 1. President, Vice

  9. eduroam Wireless Guide Windows Vista

    E-Print Network [OSTI]

    Balasuriya, Sanjeeva

    eduroam Wireless Guide Windows Vista Updated: 18 February 2011 1. Click the wireless icon in the taskbar 2. Select "connect to a network" 3. Select the "eduroam" wireless network from the list and press connecting: To view common issues visit http://www.adelaide.edu.au/its/wireless/help/ or use the below

  10. Wireless adiabatic power transfer

    E-Print Network [OSTI]

    A. A. Rangelov; H. Suchowski; Y. Silberberg; N. V. Vitanov

    2010-10-30

    We propose a technique for efficient mid-range wireless power transfer between two coils, by adapting the process of adiabatic passage for a coherently driven two-state quantum system to the realm of wireless energy transfer. The proposed technique is shown to be robust to noise, resonant constraints, and other interferences that exist in the neighborhood of the coils.

  11. WizSync: Exploiting Wi-Fi Infrastructure for Clock Synchronization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Xing, Guoliang

    synchronization approach by exploiting the existing Wi-Fi infrastructure. Our approach leverages the fact that ZigBee unlicensed spectrum. As a result, a ZigBee node can detect and synchronize to the periodic beacons standards such as Bluetooth and 802.15.4/ZigBee, which also adopt the 2.4 GHz unlicensed spectrum

  12. Wireless sensor networks for measuring traffic

    E-Print Network [OSTI]

    Varaiya, Pravin

    Wireless sensor networks for measuring traffic University of California, Berkeley Sing Yiu Cheung, Sinem Coleri, and Pravin Varaiya 2 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle wireless sensor networks compete? 7 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle

  13. Tripling the capacity of wireless communications using

    E-Print Network [OSTI]

    channels of electric-®eld polarization for wireless communication. In order to make our statements more................................................................. Tripling the capacity of wireless .............................................................................................................................................. Wireless communications are a fundamental part of modern information infrastructure. But wireless bandwidth

  14. Wireless Sensor Networks: Monitoring and Control

    SciTech Connect (OSTI)

    Hastbacka, Mildred; Ponoum, Ratcharit; Bouza, Antonio

    2013-05-31

    The article discusses wireless sensor technologies for building energy monitoring and control. This article, also, addresses wireless sensor networks as well as benefits and challenges of using wireless sensors. The energy savings and market potential of wireless sensors are reviewed.

  15. Polyethylene fiber drawing optimization

    E-Print Network [OSTI]

    Chiloyan, Vazrik

    2011-01-01

    Polymer fiber drawing creates fibers with enhanced thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve ...

  16. Fiber Lasers

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find whatGasEnergyfeature photoTheory ChalkboardFiber Lasers NIF

  17. Wireless Magnetic Sensor Applications in Transportation Infrastructure

    E-Print Network [OSTI]

    Sanchez, Rene Omar

    2012-01-01

    of wireless magnetic sensors in Intelligent Trans- portationof wireless magnetic sensors in Intelligent Transportationmagnetic sensors for different Intelligent Transportation

  18. Solar-Powered Smart Wireless Camera Network for Outdoor Monitoring

    E-Print Network [OSTI]

    Abas, Kevin Mathys

    2015-01-01

    2 Related Work Wireless Smart Cameras . . . . . .Solar-Powered Wireless Visual SensorOther Embedded Wireless Protocols . . . . . . . . . . . . .

  19. Hans Peter Schwefel Wireless Networks III, Fall 2005: MM2, Wireless TCP

    E-Print Network [OSTI]

    Schwefel, Hans-Peter

    Page 1 Hans Peter Schwefel Wireless Networks III, Fall 2005: MM2, Wireless TCP Wireless Networks Wireless TCP (HPS) · Mm3 Wireless applications, SIP & IMS (HPS) · Mm4 Ad-hoc Networks I (TKM) · Mm5 Ad Schwefel Wireless Networks III, Fall 2005: MM2, Wireless TCP Background: IP Protocol Stack Network Layer

  20. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01

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

  1. Network coded wireless architecture

    E-Print Network [OSTI]

    Katti, Sachin Rajsekhar

    2008-01-01

    Wireless mesh networks promise cheap Internet access, easy deployment, and extended range. In their current form, however, these networks suffer from both limited throughput and low reliability; hence they cannot meet the ...

  2. wireless.ps

    E-Print Network [OSTI]

    D-LINK DWL-1000AP 802.11B Wireless LAN Access Point 11Mbps Best Deal On Earth! Regular price: $399.00. Sale price: $234.00. DWL-120> D-LINK ...

  3. Wireless NetworksWireless Networks Wenyuan XuWenyuan Xu

    E-Print Network [OSTI]

    Xu, Wenyuan

    18731873 ­­ ""A Dynamical Theory of the Electromagnetic FieldA Dynamical Theory of the Electromagnetic and Privacy for Emerging Ubiquitous Communication systemion system #12;OutlineOutline Wireless FundamentalsWireless Fundamentals Physical layerPhysical layer Various standards and the corresponding wirelessVarious standards

  4. Wireless Device Request Form Department

    E-Print Network [OSTI]

    Wireless Device Request Form Department: Employee ID #: St. Francis Xavier University TSG Contact Date: Part II - Employee Agreement I agree and acknowledge that I have read the Wireless Communications

  5. Energy efficiency in wireless networks 

    E-Print Network [OSTI]

    Jung, Eun-Sun

    2005-11-01

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

  6. Center of Excellence WIRELESS AND

    E-Print Network [OSTI]

    California at Davis, University of

    Center of Excellence WIRELESS AND INFORMATION TECHNOLOGY CALL FOR PAPERS INTERNATIONAL CONFERENCE ON CUTTING EDGE WIRELESS AND IT TECHNOLOGIES CREST HOLLOW COUNTRY CLUB, Woodbury, New York November 9, 2004 This conference, organized by the Center of Excellence in Wireless and Information Technology (CEWIT), at Stony

  7. Deflating Wireless Link Basem Shihada

    E-Print Network [OSTI]

    Shihada, Basem

    Deflating Wireless Link Buffers Basem Shihada CEMSE, KAUST #12;Computing and Networking Trends to as computer classes) form, evolve and may eventually die out. Ubiquitous high-speed wireless connectivity is a must. Dense, small-range wireless access points (AP) will become more important than today. Spectrum

  8. Wearable Wireless Electrocardiogram (Quick Doc)

    E-Print Network [OSTI]

    Haykin, Simon

    Wearable Wireless Electrocardiogram (Quick Doc) by Ashwin Ayyaswamy 0542716 Electrical sooner thereby reducing patient wait times. My part of this system is the wearable wireless wirelessly to a computer which exploits Matlab to perform digital operations on the signal and display it

  9. Broadband Wireless Communication in an

    E-Print Network [OSTI]

    Kansas, University of

    Broadband Wireless Communication in an Occupied Frequency Band Dragan Trajkov Joseph Evans James. Project Sponsor: Sprint Corporation Technical Report The University of Kansas #12;1 ABSTRACT The wireless for wireless communications may be insufficient. This report shows a study of how two different systems can use

  10. Wireless Sensor Networks for Healthcare

    E-Print Network [OSTI]

    Lu, Chenyang

    INVITED P A P E R Wireless Sensor Networks for Healthcare In healthcare, there is a strong need, wireless sensor networks for healthcare have emerged in the recent years. In this review, we present some representative applications in the healthcare domain and describe the challenges they introduce to wireless

  11. WILEY WIRELESS COMMUNICATIONS AND MOBILE COMPUTING 1 Cognitive Engine Implementation for Wireless

    E-Print Network [OSTI]

    Kansas, University of

    WILEY WIRELESS COMMUNICATIONS AND MOBILE COMPUTING 1 Cognitive Engine Implementation for Wireless and multicarrier systems. Determining the appropriate radio parameters given a dynamic wireless channel environment is the primary feature of cognitive radios for wireless communication systems. Genetic algorithms (GA

  12. Traffic Management and Net Neutrality in Wireless Networks

    E-Print Network [OSTI]

    Jordan, Scott

    2011-01-01

    loops or wireless spectrum and switches or routers. Thesedevices such as routers. Wireless networks incur similar

  13. UofT Wireless Network Windows Vista

    E-Print Network [OSTI]

    UofT Wireless Network Windows Vista 1. Before you can use the UofT wireless network, you must logging in to the UofT wireless network. There will be a short delay between verifying and being able to access the UofT wireless network. 3. Left-click the wireless icon in the tray area, and click Con- nect

  14. Wireless Control: Opportunities and Challengespp g

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Wireless Control: Opportunities and Challengespp g Karl Henrik Johansson ACCESS Linnaeus Centre Wireless feedback control systemWireless feedback control system · A wireless network of computer devices ablep to monitor and control a physical plant Wireless communication links Sensors Computers Actuators

  15. Ceramic fiber reinforced filter

    DOE Patents [OSTI]

    Stinton, David P. (Knoxville, TN); McLaughlin, Jerry C. (Oak Ridge, TN); Lowden, Richard A. (Powell, TN)

    1991-01-01

    A filter for removing particulate matter from high temperature flowing fluids, and in particular gases, that is reinforced with ceramic fibers. The filter has a ceramic base fiber material in the form of a fabric, felt, paper of the like, with the refractory fibers thereof coated with a thin layer of a protective and bonding refractory applied by chemical vapor deposition techniques. This coating causes each fiber to be physically joined to adjoining fibers so as to prevent movement of the fibers during use and to increase the strength and toughness of the composite filter. Further, the coating can be selected to minimize any reactions between the constituents of the fluids and the fibers. A description is given of the formation of a composite filter using a felt preform of commercial silicon carbide fibers together with the coating of these fibers with pure silicon carbide. Filter efficiency approaching 100% has been demonstrated with these filters. The fiber base material is alternately made from aluminosilicate fibers, zirconia fibers and alumina fibers. Coating with Al.sub.2 O.sub.3 is also described. Advanced configurations for the composite filter are suggested.

  16. Multi-Channel and Multi-Rate Adaptation for High-Throughput Wireless Networks

    E-Print Network [OSTI]

    Nguyen, Duy Duc

    2012-01-01

    layer. Unlike wired networks, wireless networks have to deal2 Background Wireless Networks Wireless technology is allWLAN), wireless mesh networks, wireless metropolitan area

  17. Multimaterial fiber electronics

    E-Print Network [OSTI]

    Lestoquoy, Guillaume

    2014-01-01

    As the number of materials that are thermally-drawable into fibers is rapidly expending, numerous new multimaterial fiber architectures can be envisioned and fabricated. High-melting temperature metals, compound materials, ...

  18. Omnidirectional fiber optic tiltmeter

    DOE Patents [OSTI]

    Benjamin, B.C.; Miller, H.M.

    1983-06-30

    A tiltmeter is provided which is useful in detecting very small movements such as earth tides. The device comprises a single optical fiber, and an associated weight affixed thereto, suspended from a support to form a pendulum. A light source, e.g., a light emitting diode, mounted on the support transmits light through the optical fiber to a group of further optical fibers located adjacent to but spaced from the free end of the single optical fiber so that displacement of the single optical fiber with respect to the group will result in a change in the amount of light received by the individual optical fibers of the group. Photodetectors individually connectd to the fibers produce corresponding electrical outputs which are differentially compared and processed to produce a resultant continuous analog output representative of the amount and direction of displacement of the single optical fiber.

  19. Fiber draw synthesis

    E-Print Network [OSTI]

    Orf, Nicholas D.

    The synthesis of a high-melting temperature semiconductor in a low-temperature fiber drawing process is demonstrated, substantially expanding the set of materials that can be incorporated into fibers. Reagents in the solid ...

  20. Carbon Fiber Technology Facility

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

    precursors Textile polyacrylonitrile (PAN) aka acrylic fiber. Polyolefin Lignin Develop processing methodologies to convert low-cost precursors to usable...

  1. Helical Fiber Amplifier

    DOE Patents [OSTI]

    Koplow, Jeffrey P. (Washington, DC); Kliner, Dahy (San Ramon, CA); Goldberg, Lew (Fairfax, VA)

    2002-12-17

    A multi-mode gain fiber is provided which affords substantial improvements in the maximum pulse energy, peak power handling capabilities, average output power, and/or pumping efficiency of fiber amplifier and laser sources while maintaining good beam quality (comparable to that of a conventional single-mode fiber source). These benefits are realized by coiling the multimode gain fiber to induce significant bend loss for all but the lowest-order mode(s).

  2. Context-aware computing for wireless networks

    E-Print Network [OSTI]

    Ergüt, Salih

    2010-01-01

    Packet Delay in Wireless Networks 2 Client Side Active QueueCellular and Sensor Networks Wireless Positioning Overviewin Mobile, Ad Hoc and Wireless Networks, pages 1–10, 2006. [

  3. Software Defined Wireless Networks: Unbridling SDNs

    E-Print Network [OSTI]

    Perkins, Dmitri

    Software Defined Wireless Networks: Unbridling SDNs Salvatore Costanzo, Laura Galluccio, Giacomo at analyzing how SDN can be beneficial in wireless infrastructureless networking environments with special emphasis on wireless personal area networks (WPAN). Furthermore, a possible approach (called SDWN

  4. Cooperative Diversity Routing in Wireless Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Cooperative Diversity Routing in Wireless Networks Mostafa Dehghan and Majid Ghaderi Department routing, cooperative commu- nication, cooperative diversity, wireless networks. I. INTRODUCTION Energy efficiency is a challenging problem in wireless networks, especially in ad hoc and sensor networks, where

  5. Characterizing User Mobility in Wireless Networks

    E-Print Network [OSTI]

    Nunes, Bruno Astuto Arouche

    2012-01-01

    Symmetry of User Mobility in Wireless Networks 3.1 MobilityAnalysis of a local-area wireless network. In ACM MOBI- COMand evaluation of wireless networks and their protocols.

  6. Collaborative Firewalling in Wireless Networks Mahmoud Taghizadeh

    E-Print Network [OSTI]

    Liu, Alex X.

    Collaborative Firewalling in Wireless Networks Mahmoud Taghizadeh Department of ECE Michigan State elements to enforce access policies in computer networks. Open network architecture, shared wireless medium for wireless networks in which nodes collaboratively perform packet filtering to address resource squandering

  7. FUNDAMENTAL PERFORMANCE LIMITS OF WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Li, Baochun

    FUNDAMENTAL PERFORMANCE LIMITS OF WIRELESS SENSOR NETWORKS ZHIHUA HU, BAOCHUN LI Abstract. Understanding the fundamental performance limits of wireless sensor networks is critical towards. In addition to presenting the general results with respect to the maximum sustainable throughput of wireless

  8. High-Density Wireless Neural Recording System

    E-Print Network [OSTI]

    Chae, Moo Sung

    2013-01-01

    A 4-channel Wearable Wireless Neural Recording System,” inand J.C. Principe, “Wireless, In Vivo Neural Recording usingPower Integrated Circuit for a Wireless 100-Electrode Neural

  9. Wireless Gateway Programming Model Qadri Hamarsheh

    E-Print Network [OSTI]

    1 Wireless Gateway Programming Model Qadri Hamarsheh Department of Computer Engineering, Faculty suggests architecture for Wireless Gateway Programming Model that consists of building blocks to solve the technical and business problems of wireless environment. The paper describes various fundamental aspects

  10. Wireless Demand Response Controls for HVAC Systems

    E-Print Network [OSTI]

    Federspiel, Clifford

    2010-01-01

    Linksys WRT54G3G-ST Wireless G router for mobile broadband.This router includes a 4-port switch, a wireless G accessrouters for connecting to the DRAS, and tested the wireless

  11. Caching in wireless networks

    E-Print Network [OSTI]

    Niesen, Urs

    We consider the problem of delivering content cached in a wireless network of n nodes randomly located on a square of area n. In the most general form, this can be analyzed by considering the 2[superscript n] timesn-dimensional ...

  12. Miniaturized wireless sensor network

    E-Print Network [OSTI]

    Lecointre, Aubin; Dubuc, David; Katia, Grenier; Patrick, Pons; Aubert, Hervé; Muller, A; Berthou, Pascal; Gayraud, Thierry; Plana, Robert

    2010-01-01

    This paper addresses an overview of the wireless sensor networks. It is shown that MEMS/NEMS technologies and SIP concept are well suited for advanced architectures. It is also shown analog architectures have to be compatible with digital signal techniques to develop smart network of microsystem.

  13. Insecurity of Wireless Networks

    SciTech Connect (OSTI)

    Sheldon, Frederick T; Weber, John Mark; Yoo, Seong-Moo; Pan, W. David

    2012-01-01

    Wireless is a powerful core technology enabling our global digital infrastructure. Wi-Fi networks are susceptible to attacks on Wired Equivalency Privacy, Wi-Fi Protected Access (WPA), and WPA2. These attack signatures can be profiled into a system that defends against such attacks on the basis of their inherent characteristics. Wi-Fi is the standard protocol for wireless networks used extensively in US critical infrastructures. Since the Wired Equivalency Privacy (WEP) security protocol was broken, the Wi-Fi Protected Access (WPA) protocol has been considered the secure alternative compatible with hardware developed for WEP. However, in November 2008, researchers developed an attack on WPA, allowing forgery of Address Resolution Protocol (ARP) packets. Subsequent enhancements have enabled ARP poisoning, cryptosystem denial of service, and man-in-the-middle attacks. Open source systems and methods (OSSM) have long been used to secure networks against such attacks. This article reviews OSSMs and the results of experimental attacks on WPA. These experiments re-created current attacks in a laboratory setting, recording both wired and wireless traffic. The article discusses methods of intrusion detection and prevention in the context of cyber physical protection of critical Internet infrastructure. The basis for this research is a specialized (and undoubtedly incomplete) taxonomy of Wi-Fi attacks and their adaptations to existing countermeasures and protocol revisions. Ultimately, this article aims to provide a clearer picture of how and why wireless protection protocols and encryption must achieve a more scientific basis for detecting and preventing such attacks.

  14. Secure Wireless Tritium Air Monitoring Cart Development

    Office of Environmental Management (EM)

    Mesh Point ES520 Wireless Link to Backhaul Network (Isolated & Dedicated PC) (Wireless IEEE 802.11) (Ethernet) Fortress ES520s (Serial) Worker Protection System (WPS) PLC...

  15. Hybrid matrix fiber composites

    DOE Patents [OSTI]

    Deteresa, Steven J.; Lyon, Richard E.; Groves, Scott E.

    2003-07-15

    Hybrid matrix fiber composites having enhanced compressive performance as well as enhanced stiffness, toughness and durability suitable for compression-critical applications. The methods for producing the fiber composites using matrix hybridization. The hybrid matrix fiber composites include two chemically or physically bonded matrix materials, whereas the first matrix materials are used to impregnate multi-filament fibers formed into ribbons and the second matrix material is placed around and between the fiber ribbons that are impregnated with the first matrix material and both matrix materials are cured and solidified.

  16. Fiber optic laser rod

    DOE Patents [OSTI]

    Erickson, G.F.

    1988-04-13

    A laser rod is formed from a plurality of optical fibers, each forming an individual laser. Synchronization of the individual fiber lasers is obtained by evanescent wave coupling between adjacent optical fiber cores. The fiber cores are dye-doped and spaced at a distance appropriate for evanescent wave coupling at the wavelength of the selected dye. An interstitial material having an index of refraction lower than that of the fiber core provides the optical isolation for effective lasing action while maintaining the cores at the appropriate coupling distance. 2 figs.

  17. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, Joseph B. (Harriman, TN); Muhs, Jeffrey D. (Lenoir City, TN); Tobin, Kenneth W. (Harriman, TN)

    1995-01-01

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity.

  18. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, J.B.; Muhs, J.D.; Tobin, K.W.

    1995-01-10

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity. 2 figures.

  19. Fiber optic moisture sensor

    DOE Patents [OSTI]

    Kirkham, R.R.

    1984-08-03

    A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

  20. WiMed: An Infrastructure-less Approach to Wireless Diagnosis

    E-Print Network [OSTI]

    with other 802.11 devices (hidden terminals) as well as with technologies like Bluetooth and ZigBee transmitters using a wide range of link technologies such as 802.11, Bluetooth and ZigBee, share the unlicensed

  1. Map of wireless networks For more information on University wireless services visit

    E-Print Network [OSTI]

    Martin, Stephen John

    Map of wireless networks For more information on University wireless services visit: http://www.shef.ac.uk/cics/wireless. Corporate Information and Computing Services. Connecting To the Wireless Network. Mac OS X, Apple iPhone and iPod Touch #12;Connecting to the eduroam wireless network Mac OS X Prerequisites Mac OS X 10

  2. Wireless Communication Device Allowance -1 -Approved: 12/11/2014 Wireless Communication Device Allowance

    E-Print Network [OSTI]

    Hammack, Richard

    Wireless Communication Device Allowance - 1 - Approved: 12/11/2014 Wireless Communication Device of wireless communication devices. "Wireless communication devices" may be, but are not limited to, cell, deployment, and use of wireless communication devices for which authorized employees receive a monetary

  3. Wireless Networks wireless ad-hoc and mesh networks

    E-Print Network [OSTI]

    Biagioni, Edoardo S.

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

  4. Multi-hop routing for wireless mesh networks

    E-Print Network [OSTI]

    Bhorkar, Abhijeet

    2012-01-01

    in Wireless Mesh Networks . . . . . . . . . . . . . 1.2in Mobile, Ad Hoc, and Wireless Networks (WiOpt), [45] Amanin ICDCS Workshop on Wireless Networks and Mobile Computing,

  5. Maximizing the throughput of large ad hoc wireless networks

    E-Print Network [OSTI]

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

    2006-01-01

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

  6. Traffic Management and Net Neutrality in Wireless Networks

    E-Print Network [OSTI]

    Jordan, Scott

    2011-01-01

    and resource allocation in wireless multimedia networks.between wired and wireless networks, and hence on potentialManagement for Wireless Networks. Artech House Publishers,

  7. Power Scheduling for Multi-Hop Wireless Networks

    E-Print Network [OSTI]

    Yu, Yuan

    2009-01-01

    The capacity of wireless networks,” IEEE Trans. Inform.capacity of hybrid wireless networks,” in Infocom, 2003, pp.larization for MIMO wireless networks,” IEEE Transactions on

  8. Energy Efficiency Maximization of Practical Wireless Communication Systems

    E-Print Network [OSTI]

    ERASLAN, EREN

    2013-01-01

    of Energy Efficiency in Modern Wireless CommunicationLi, “A survey of energy-efficient wireless communications,”optimization for energy- efficient wireless communications:

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

    E-Print Network [OSTI]

    Huang, Yi

    2010-01-01

    estimation in energy-constrained wireless sensor networks,”J. Wu, “Energy-e?cient coverage problems in wireless ad hoca transmission energy problem for wireless sensor networks.

  10. Energy management in wireless healthcare systems using dynamic task assignment

    E-Print Network [OSTI]

    Aghera, Priti

    2010-01-01

    in wireless channel conditions: System energy consumption2007: Microleap: Energy-aware wireless sensor platform forresults in a more energy efficient wireless transmission for

  11. Energy-Efficient Task Assignment Framework for Wireless Sensor Networks

    E-Print Network [OSTI]

    Heemin Park; Mani B. Srivastava

    2003-01-01

    and M.B. Srivastava, Energy- Aware Wireless Microsensorin wireless communications and spending more energy. EnergyAn Energy Ef?cient Fair Scheduling Policy for Wireless

  12. Towards Gigabit and Green 802.11 Wireless Networks

    E-Print Network [OSTI]

    Pefkianakis, Ioannis

    2012-01-01

    Balakrishnan. Minimizing Energy for Wireless Web Access withContext-Sensitive Energy- Efficient Wireless Data Transfer.that control speed and energy over MIMO wireless, named Rate

  13. Smart Object Architecture for Energy-Efficient Wireless Sensors

    E-Print Network [OSTI]

    Ashutosh Verma; Winston Wu; Sridhar Vemuri; Gregory Pottie; William Kaiser

    2003-01-01

    Object Architecture for Energy - Efficient Wireless Sensorsfor multitasking energy-aware wireless sensor systems thatsupport for energy efficient wide-bandwidth wireless Past

  14. Solar-Powered Smart Wireless Camera Network for Outdoor Monitoring

    E-Print Network [OSTI]

    Abas, Kevin Mathys

    2015-01-01

    Sensorcam: An energy-efficient smart wireless camera forthe accuracy-latency-energy tradeoff for wireless embeddedand energy harvesting techniques for wireless sensor nodes.

  15. Data Analysis and Query Processing in Wireless Sensor Networks

    E-Print Network [OSTI]

    Chatzimilioudis, Georgios

    2010-01-01

    multicasting in energy-constrained wireless networks. IEEEdesign for energy-e?cient wireless sensor networks. Inenergy and maximizing network lifetime multicasting in wireless

  16. Design Considerations for Solar Energy Harvesting Wireless Embedded Systems

    E-Print Network [OSTI]

    Raghunathan, Vijay; Kansal, Aman; Hsu, Jason; Friedman, Jonathan K; Srivastava, Mani B

    2005-01-01

    M. Srivastava, “Energy aware wireless microsensor networks”,for Solar Energy Harvesting Wireless Embedded Systems Vijaydesign of solar energy harvesting, wireless embedded systems

  17. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01

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

  18. Joint Adaptive Rate and Scheduling in Cellular Wireless Networks

    E-Print Network [OSTI]

    Chang, Hung-Bin

    2015-01-01

    Aided Failover for Multicast Scheduling in Wireless CellularVideo Multicast for Multi-cell Cellular Wireless Net-and Uplink Fractional Frequency Reuse in Cellular Wireless

  19. Optical Fibers Optics and Photonics

    E-Print Network [OSTI]

    Palffy-Muhoray, Peter

    Optical Fibers Optics and Photonics Dr. Palffy-Muhoray Ines Busuladzic Department of Theoretical and Applied Mathematics The University of Akron April 21, 2008 #12;Outline · History of optical fibers · What are optical fibers? · How are optical fibers made? · Light propagation through optical fibers · Application

  20. Power Management in Wireless Networks Kevin Klues

    E-Print Network [OSTI]

    Jain, Raj

    Power Management in Wireless Networks Kevin Klues Abstract This paper presents a survey on the various power saving techniques used in wireless networking today. The work presented covers topics at each layer of a wireless networking protocol stack. The types of wireless networks considered include

  1. High-Density Wireless Neural Recording System

    E-Print Network [OSTI]

    Chae, Moo Sung

    2013-01-01

    wireless FM IC for biopotential recording applications,” inInterference in Biopotential Measurements,” Instrumentation

  2. Efficient Strategyproof Multicast in Selfish Wireless Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    since wireless nodes are energy-constraint and it is often not in the interest of a node to always relayChapter 1 Efficient Strategyproof Multicast in Selfish Wireless Networks In this chapter, we study how to perform routing when each wireless node is selfish, i.e., a wireless node will always maximize

  3. Ontological Configuration Management for Wireless Mesh Routers

    E-Print Network [OSTI]

    Touriño, Juan

    Ontological Configuration Management for Wireless Mesh Routers Iv´an D´iaz , Cristian Popi then be managed homogeneously. We chose the configuration of a modular wireless router developed by the Image botanique 54602 Villers-les-Nancy, France Abstract. Wireless mesh networks (WMNs) are a category of wireless

  4. WIRELESS Eduroam Wireless Network for College Eduroam is a global wireless roaming consortium which gives members of education and research

    E-Print Network [OSTI]

    Capdeboscq, Yves

    WIRELESS Eduroam Wireless Network for College Eduroam is a global wireless roaming consortium://cat.eduroam.org (You can visit https://cat.eduroam.org whilst connected to the OWL wireless network without a password://register.it.ox.ac.uk/self/remote_access If you are already in Oxford you can get to this URL via the OWL wireless network 2. Once you have

  5. Fiber composite flywheel rim

    DOE Patents [OSTI]

    Davis, D.E.; Ingham, K.T.

    1987-04-28

    A flywheel comprising a hub having at least one radially projecting disc, an annular rim secured to said disc and providing a surface circumferential to said hub, a first plurality of resin-impregnated fibers wound about said rim congruent to said surface, and a shell enclosing said first plurality of fibers and formed by a second plurality of resin-impregnated fibers wound about said rim tangentially to said surface. 2 figs.

  6. Views of wireless network systems.

    SciTech Connect (OSTI)

    Young, William Frederick; Duggan, David Patrick

    2003-10-01

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

  7. Wireless Control Systems:Wireless Control Systems: Scientific Challenges andScientific Challenges and

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Wireless Control Systems:Wireless Control Systems: Scientific Challenges andScientific Challenges and Emerging ApplicationsEmerging Applications Karl Henrik Johansson School of Electrical Engineering Royal, Greece 27-29 Jun, 2007 © Karl H. Johansson, Wireless control Acknowledgements

  8. Proactive mobile wireless networks : an infrastructureless wireless network architecture for delay-sensitive applications

    E-Print Network [OSTI]

    Dai, Lillian Lei, 1978-

    2008-01-01

    Infrastructureless wireless networks are an important class of wireless networks that is best suited for scenarios where there is temporary and localized telecommunication demand. Such networks consist of wireless devices ...

  9. Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture

    DOE Patents [OSTI]

    McCown, Steven H. (Rigby, ID); Derr, Kurt W. (Idaho Falls, ID); Rohde, Kenneth W. (Idaho Falls, ID)

    2012-05-08

    Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture are described. According to one embodiment, a wireless device monitoring method includes accessing device configuration information of a wireless device present at a secure area, wherein the device configuration information comprises information regarding a configuration of the wireless device, accessing stored information corresponding to the wireless device, wherein the stored information comprises information regarding the configuration of the wireless device, comparing the device configuration information with the stored information, and indicating the wireless device as one of authorized and unauthorized for presence at the secure area using the comparing.

  10. Fiber optic compass development 

    E-Print Network [OSTI]

    Park, Kyongtae

    2005-11-01

    magnetometer based on this principle, a single mode optical fiber coated with nickel [6] 3 or wrapped around a Metglas cylinder [7] experiences a strain which is dependent on the external magnetic field [8-10]. The fiber is deployed in one arm of a Michelson...

  11. Super capacitor with fibers

    DOE Patents [OSTI]

    Farmer, Joseph Collin; Kaschmitter, James

    2015-02-17

    An electrical cell apparatus includes a first current collector made of a multiplicity of fibers, a second current collector spaced from the first current collector; and a separator disposed between the first current collector and the second current collector. The fibers are contained in a foam.

  12. Wireless passive radiation sensor

    DOE Patents [OSTI]

    Pfeifer, Kent B; Rumpf, Arthur N; Yelton, William G; Limmer, Steven J

    2013-12-03

    A novel measurement technique is employed using surface acoustic wave (SAW) devices, passive RF, and radiation-sensitive films to provide a wireless passive radiation sensor that requires no batteries, outside wiring, or regular maintenance. The sensor is small (<1 cm.sup.2), physically robust, and will operate unattended for decades. In addition, the sensor can be insensitive to measurement position and read distance due to a novel self-referencing technique eliminating the need to measure absolute responses that are dependent on RF transmitter location and power.

  13. Wireless Power Transmission

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnicalInformation4563 LLNL Small-scale Friction Sensitivityv b W r88 Lunar Wireless

  14. Fiber optic hydrophone

    DOE Patents [OSTI]

    Kuzmenko, Paul J. (Livermore, CA); Davis, Donald T. (Livermore, CA)

    1994-01-01

    A miniature fiber optic hydrophone based on the principles of a Fabry-Perot interferometer. The hydrophone, in one embodiment, includes a body having a shaped flexible bladder at one end which defines a volume containing air or suitable gas, and including a membrane disposed adjacent a vent. An optic fiber extends into the body with one end terminating in spaced relation to the membrane. Acoustic waves in the water that impinge on the bladder cause the pressure of the volume therein to vary causing the membrane to deflect and modulate the reflectivity of the Fabry-Perot cavity formed by the membrane surface and the cleaved end of the optical fiber disposed adjacent to the membrane. When the light is transmitted down the optical fiber, the reflected signal is amplitude modulated by the incident acoustic wave. Another embodiment utilizes a fluid filled volume within which the fiber optic extends.

  15. Fiber optic hydrophone

    DOE Patents [OSTI]

    Kuzmenko, P.J.; Davis, D.T.

    1994-05-10

    A miniature fiber optic hydrophone based on the principles of a Fabry-Perot interferometer is disclosed. The hydrophone, in one embodiment, includes a body having a shaped flexible bladder at one end which defines a volume containing air or suitable gas, and including a membrane disposed adjacent a vent. An optical fiber extends into the body with one end terminating in spaced relation to the membrane. Acoustic waves in the water that impinge on the bladder cause the pressure of the volume therein to vary causing the membrane to deflect and modulate the reflectivity of the Fabry-Perot cavity formed by the membrane surface and the cleaved end of the optical fiber disposed adjacent to the membrane. When the light is transmitted down the optical fiber, the reflected signal is amplitude modulated by the incident acoustic wave. Another embodiment utilizes a fluid filled volume within which the fiber optic extends. 2 figures.

  16. Recommended Practices Guide For Securing ZigBee Wireless Networks...

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

    Wireless Networks in Process Control System Environments More Documents & Publications Wireless System Considerations When Implementing NERC Critical Infrastructure Protection...

  17. ISA Approves Standard for Wireless Automation in Process Control...

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

    for Wireless Automation in Process Control Applications More Documents & Publications Wireless System Considerations When Implementing NERC Critical Infrastructure Protection...

  18. Power Scheduling for Multi-Hop Wireless Networks

    E-Print Network [OSTI]

    Yu, Yuan

    2009-01-01

    a large network of wireless routers,” IEEE Transactions onas a router to relay messages for its neighbors. A wireless

  19. Wireless Advances in the Monitoring of the Human Gastrointestinal Tract

    E-Print Network [OSTI]

    Wasko, Michael Hong Lee

    2015-01-01

    BQ51050B Wireless Recharge Receiver and Battery Charger. Thethe Wireless Recharge Receiver and Battery Charger. While

  20. Final Report: Mobile Surveillance and Wireless Communication Systems Field Operational Test; Volume 1: Executive Summary

    E-Print Network [OSTI]

    Klein, Lawrence

    1999-01-01

    and Wireless Communication Systems Field Operational Testand Wireless Communication Systems Field Operational Testand Wireless Communication Systems Field Operational Test;

  1. Biomonitoring with Wireless Communications

    SciTech Connect (OSTI)

    Budinger, Thomas F.

    2003-03-01

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

  2. Wireless Power Transfer

    ScienceCinema (OSTI)

    None

    2013-11-19

    Wireless Power Transfer is an innovative approach using magnetic resonance coupling of air core transformers designed for today's growing plug-in electric vehicle market. This technology can provide a convenient, safe and flexible means to charge electric vehicles under stationary and dynamic conditions. Plug-in Electric Vehicles (PEV) are burdened by the need for cable and plug charger, galvanic isolation of the on-board electronics, bulk and cost of this charger and the large energy storage system (ESS) packs needed. With a system where you have to physically plug in there are a number of occasions where the owner could very well forget to charge the vehicle. For stationary applications (like charging of a PHEV at home), ORNL's innovative wireless power transfer technology adds a convenience factor compared to actually plugging in which will mean that the vehicle will have a full charge every morning. Electric vehicle charging must be safe, compact and efficient in order to be convenient for customers. By reconfiguring the transformer and altering the resonance frequency, energy is transferred to the battery with lower energy losses and with fewer demands on the primary circuit by the rest of the transformer system. The ORNL discovery shows that sufficient power for the battery can be transferred from the primary to secondary circuits without significant energy losses if the operating frequency is set at 50% to 95% of the resonance frequency of the circuit. The electrical power is then transmitted to the chargeable battery, which is electrically coupled to the secondary circuit through the air core transformer. Some advantages include: Reduced energy losses during transfer of energy to the battery; A charge potential that is relatively unaffected by up to 25% misalignment of vehicle; and Other receiving components draw less power from the primary circuit. These advantages allow wireless power technology applications to expand at the workplace and beyond as the demand for EV rises. For vehicles that operate over a fixed route such as busses and shuttle vehicles, Wireless Power Transfer (WPT) means that a smaller battery pack can be used. In the traditional system, the battery pack is designed to accommodate the needs of the entire route or shift. With WPT the battery can be downsized because it can be charged when the vehicle stops on its route (a rental car shuttle bus, for example, can charge when it waits in the terminal and again when it waits at the rental car place. Thus the battery only needs enough charge to get to the next stop. This decrease in battery size means significant cost savings to electrify the vehicle. This technology enables efficient "opportunity charging stations" for predefined routes and planned stops reducing down time. Charging can occur in minutes. This improvement also eliminates the harmful emissions that occur in garages while buses are at idle during charging. In larger cities, dynamic charging offers an even greater impact utilizing existing infrastructure. As vehicles travel along busy freeways and interstate systems, wireless charging can occur while the vehicle is in motion. With this technology a vehicle essentially has unlimited electric range while using a relatively small battery pack. In-motion charging stations use vehicle sensors to alert the driver. Traveling at normal speeds, sensors establish in-motion charging. WPT transmit pads sequentially energize to the negotiated power level based on vehicle speed and its requested charging energy. Lower power when vehicle speed is slow and much higher power for faster moving vehicles. Vehicle to Infrastructure communications (V2I) coordinates WPT charging level according to on-board battery pack state-of-charge. V2I activates the roadway transmit pads placing them in standby mode and negotiates charging fee based on prevailing grid rate and vehicle energy demand. Dynamic charging would allow electricity to supply a very large fraction of the energy for the transportation sector and reduce greatly petroleum consump

  3. Wireless Power Transfer

    SciTech Connect (OSTI)

    2013-07-22

    Wireless Power Transfer is an innovative approach using magnetic resonance coupling of air core transformers designed for today's growing plug-in electric vehicle market. This technology can provide a convenient, safe and flexible means to charge electric vehicles under stationary and dynamic conditions. Plug-in Electric Vehicles (PEV) are burdened by the need for cable and plug charger, galvanic isolation of the on-board electronics, bulk and cost of this charger and the large energy storage system (ESS) packs needed. With a system where you have to physically plug in there are a number of occasions where the owner could very well forget to charge the vehicle. For stationary applications (like charging of a PHEV at home), ORNL's innovative wireless power transfer technology adds a convenience factor compared to actually plugging in which will mean that the vehicle will have a full charge every morning. Electric vehicle charging must be safe, compact and efficient in order to be convenient for customers. By reconfiguring the transformer and altering the resonance frequency, energy is transferred to the battery with lower energy losses and with fewer demands on the primary circuit by the rest of the transformer system. The ORNL discovery shows that sufficient power for the battery can be transferred from the primary to secondary circuits without significant energy losses if the operating frequency is set at 50% to 95% of the resonance frequency of the circuit. The electrical power is then transmitted to the chargeable battery, which is electrically coupled to the secondary circuit through the air core transformer. Some advantages include: Reduced energy losses during transfer of energy to the battery; A charge potential that is relatively unaffected by up to 25% misalignment of vehicle; and Other receiving components draw less power from the primary circuit. These advantages allow wireless power technology applications to expand at the workplace and beyond as the demand for EV rises. For vehicles that operate over a fixed route such as busses and shuttle vehicles, Wireless Power Transfer (WPT) means that a smaller battery pack can be used. In the traditional system, the battery pack is designed to accommodate the needs of the entire route or shift. With WPT the battery can be downsized because it can be charged when the vehicle stops on its route (a rental car shuttle bus, for example, can charge when it waits in the terminal and again when it waits at the rental car place. Thus the battery only needs enough charge to get to the next stop. This decrease in battery size means significant cost savings to electrify the vehicle. This technology enables efficient "opportunity charging stations" for predefined routes and planned stops reducing down time. Charging can occur in minutes. This improvement also eliminates the harmful emissions that occur in garages while buses are at idle during charging. In larger cities, dynamic charging offers an even greater impact utilizing existing infrastructure. As vehicles travel along busy freeways and interstate systems, wireless charging can occur while the vehicle is in motion. With this technology a vehicle essentially has unlimited electric range while using a relatively small battery pack. In-motion charging stations use vehicle sensors to alert the driver. Traveling at normal speeds, sensors establish in-motion charging. WPT transmit pads sequentially energize to the negotiated power level based on vehicle speed and its requested charging energy. Lower power when vehicle speed is slow and much higher power for faster moving vehicles. Vehicle to Infrastructure communications (V2I) coordinates WPT charging level according to on-board battery pack state-of-charge. V2I activates the roadway transmit pads placing them in standby mode and negotiates charging fee based on prevailing grid rate and vehicle energy demand. Dynamic charging would allow electricity to supply a very large fraction of the energy for the transportation sector and reduce greatly petroleum consump

  4. Fiber optic hydrogen sensor

    DOE Patents [OSTI]

    Buchanan, B.R.; Prather, W.S.

    1991-01-01

    Apparatus and method for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading, by a single spectrophotometer.

  5. Wireless Monitoring of Railway Embankments 

    E-Print Network [OSTI]

    Dantal, Vishal S.

    2010-07-14

    catastrophic damages. Soil moisture and movement of the soil mass are prime indicators of potential shallow slide movements. This assessment of wireless instruments considers a variety of devices ranging from devices for monitoring tilt and moisture at specific...

  6. Cooperative multicast in wireless networks

    E-Print Network [OSTI]

    Li, Fulu, 1970-

    2005-01-01

    Wireless communication has fundamental impairments due to multi-path fading, attenuation, reflections, obstructions, and noise. More importantly, it has historically been designed to mimic a physical wire; in concept other ...

  7. Wireless transfer of electric power

    E-Print Network [OSTI]

    Moffatt, Robert Alexander

    2009-01-01

    In this dissertation, I describe the design and construction of a system which can transfer electric power wirelessly. This is accomplished using inductive, near-field, non-radiative coupling between self-resonant copper ...

  8. Wireless Magnetothermal Deep Brain Stimulation

    E-Print Network [OSTI]

    Chen, Ritchie

    Wireless deep brain stimulation of well-defined neuronal populations could facilitate the study of intact brain circuits and the treatment of neurological disorders. Here we demonstrate minimally-invasive and remote neural ...

  9. Universal Wireless Event Monitoring System 

    E-Print Network [OSTI]

    Yambem, Lamyanba

    2012-10-19

    stream_source_info YAMBEM-THESIS.pdf.txt stream_content_type text/plain stream_size 46015 Content-Encoding UTF-8 stream_name YAMBEM-THESIS.pdf.txt Content-Type text/plain; charset=UTF-8 UNIVERSAL WIRELESS EVENT... Engineering UNIVERSAL WIRELESS EVENT MONITORING SYSTEM A Thesis by LAMYANBA YAMBEM Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

  10. Fiber bundle phase conjugate mirror

    DOE Patents [OSTI]

    Ward, Benjamin G.

    2012-05-01

    An improved method and apparatus for passively conjugating the phases of a distorted wavefronts resulting from optical phase mismatch between elements of a fiber laser array are disclosed. A method for passively conjugating a distorted wavefront comprises the steps of: multiplexing a plurality of probe fibers and a bundle pump fiber in a fiber bundle array; passing the multiplexed output from the fiber bundle array through a collimating lens and into one portion of a non-linear medium; passing the output from a pump collection fiber through a focusing lens and into another portion of the non-linear medium so that the output from the pump collection fiber mixes with the multiplexed output from the fiber bundle; adjusting one or more degrees of freedom of one or more of the fiber bundle array, the collimating lens, the focusing lens, the non-linear medium, or the pump collection fiber to produce a standing wave in the non-linear medium.

  11. EVERYONE, IT SEEMS, IS GOING WIRELESS. Wireless communications technology even shares

    E-Print Network [OSTI]

    Haimovich, Alexander

    data sent over wireless net- works with minimal signal degradation. Professor of electrical engineeringEVERYONE, IT SEEMS, IS GOING WIRELESS. Wireless communications technology even shares the spotlight with celebrities and political leaders in major news media. In fact, Newsweek recently took a look at the wireless

  12. IEEE COMMUNICATIONS MAGAZINE, SPECIAL ISSUE MULTIACCESS FOR BROADBAND WIRELESS 100 Wireless Bandwidth in the Making

    E-Print Network [OSTI]

    Verdú, Sergio

    IEEE COMMUNICATIONS MAGAZINE, SPECIAL ISSUE MULTIACCESS FOR BROADBAND WIRELESS 100 Wireless to approaching the information theoretic limits of wireless multiple­access channels. This article offers a brief review of those technologies and their promise to meet future demand for wireless data rate. Keywords

  13. The next step in the wireless revolution is the connection of everyday devices through wireless

    E-Print Network [OSTI]

    California at San Diego, University of

    - Electrical and Computer Engineering Wireless Embedded Systems Graduate Education for EngineeringThe next step in the wireless revolution is the connection of everyday devices through wireless technology (so-called embedded wireless). This technology is expected to explode in the next decade

  14. Control over Wireless NetworksControl over Wireless Networks Karl Henrik Johansson

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Control over Wireless NetworksControl over Wireless Networks Karl Henrik Johansson School of Electrical Engineering Royal Institute of Technology Stockholm, Sweden 25th Benelux Meeting on Systems, 2006 Wireless control systemWireless control system Sensors Controllers Actuators A collection

  15. WirelessHART: Applying Wireless Technology in Real-Time Industrial Process Control

    E-Print Network [OSTI]

    Chandy, John A.

    a WirelessHART protocol stack. 1 Introduction Wireless process control has been a popular topic re- centlyWirelessHART: Applying Wireless Technology in Real-Time Industrial Process Control Jianping Song.nixon}@emerson.com Wally Pratt HART Communication Foundation 9390 Research Blvd., Suite I-350 Austin, TX 78759, USA wallyp

  16. Hans Peter Schwefel Wireless Networks III, Fall 2005: MM3, Wireless Services

    E-Print Network [OSTI]

    Schwefel, Hans-Peter

    in wireless settings 3. Video Streaming · Encoding and tranmission principles, buffering issues · Enhancements

  17. Wireless LANs: outline wireless 802.11 and WiFi.

    E-Print Network [OSTI]

    Biagioni, Edoardo S.

    Wireless LANs: outline wireless 802.11 and WiFi. 802.11 security: WEP, 802.11i, WPA, WPA2. networking security wireless ad-hoc and mesh networks #12;ISM bands to operate most radios, a license availability of the 2.4GHz ISM band, many applications have been developed for it #12;Wireless 802.11/Wi

  18. Fiber alignment apparatus and method

    DOE Patents [OSTI]

    Kravitz, Stanley H. (Placitas, NM); Warren, Mial Evans (Albuquerque, NM); Snipes, Jr., Morris Burton (Albuquerque, NM); Armendariz, Marcelino Guadalupe (Albuquerque, NM); Word, V., James Cole (Albuqueruqe, NM)

    1997-01-01

    A fiber alignment apparatus includes a micro-machined nickel spring that captures and locks arrays of single mode fibers into position. The design consists of a movable nickel leaf shaped spring and a fixed pocket where fibers are held. The fiber is slid between the spring and a fixed block, which tensions the spring. When the fiber reaches the pocket, it automatically falls into the pocket and is held by the pressure of the leaf spring.

  19. Fiber alignment apparatus and method

    DOE Patents [OSTI]

    Kravitz, S.H.; Warren, M.E.; Snipes, M.B. Jr.; Armendariz, M.G.; Word, J.C. V

    1997-08-19

    A fiber alignment apparatus includes a micro-machined nickel spring that captures and locks arrays of single mode fibers into position. The design consists of a movable nickel leaf shaped spring and a fixed pocket where fibers are held. The fiber is slid between the spring and a fixed block, which tensions the spring. When the fiber reaches the pocket, it automatically falls into the pocket and is held by the pressure of the leaf spring. 8 figs.

  20. Introgression & mapping Fiber cell

    E-Print Network [OSTI]

    Germplasm Introgression Genomics & mapping Fiber cell initiation Radiation hybrid (RH) mapping and breeding. Research activities commonly include plant breeding, genetics, genomics, cytogenetics, molecular methods. (C, S) · Contribute uniquely to genomics and its relevance to genetic improvement (C,S) · Harness

  1. Optoelectronic fiber interface design

    E-Print Network [OSTI]

    Spencer, Matthew Edmund

    2008-01-01

    Recent developments in materials science have led to the development of an exciting, new class of fibers which integrate metals, semiconductors and insulators in the same codrawing process. Various electrical devices have ...

  2. Multimaterial rectifying device fibers

    E-Print Network [OSTI]

    Orf, Nicholas D

    2009-01-01

    Electronic and optoelectronic device processing is commonly thought to be incompatible with much simpler thermal drawing techniques used in optical fiber production. The incorporation of metals, polymer insulators, and ...

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

    SciTech Connect (OSTI)

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

    2011-02-01

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

  4. Dark Soliton Fiber Laser

    E-Print Network [OSTI]

    H. Zhang; D. Y. Tang; L. M. Zhao; X. Wu; Q. L. Bao; K. P. Loh

    2009-05-08

    We report on the experimental observation of stable dark solitons in an all normal dispersion fiber laser. We found experimentally that dark soliton formation is a generic feature of the fiber laser under strong continuous wave (CW) emission. However, only under appropriate pump strength and negative cavity feedback, stable single or multiple dark soliton could be achieved. Furthermore, we show that the features of the observed dark solitons could be well understood based on the nonlinear Schrodinger equation (NLSE).

  5. Wireless Josephson amplifier

    SciTech Connect (OSTI)

    Narla, A.; Sliwa, K. M.; Hatridge, M.; Shankar, S.; Frunzio, L.; Schoelkopf, R. J.; Devoret, M. H.

    2014-06-09

    Josephson junction parametric amplifiers are playing a crucial role in the readout chain in superconducting quantum information experiments. However, their integration with current 3D cavity implementations poses the problem of transitioning between waveguide, coax cables, and planar circuits. Moreover, Josephson amplifiers require auxiliary microwave components, like directional couplers and/or hybrids, that are sources of spurious losses and impedance mismatches that limit measurement efficiency and amplifier tunability. We have developed a wireless architecture for these parametric amplifiers that eliminates superfluous microwave components and interconnects. This greatly simplifies their assembly and integration into experiments. We present an experimental realization of such a device operating in the 9–11?GHz band with about 100?MHz of amplitude gain-bandwidth product, on par with devices mounted in conventional sample holders. The simpler impedance environment presented to the amplifier also results in increased amplifier tunability.

  6. Network coding for robust wireless networks

    E-Print Network [OSTI]

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

    2012-01-01

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

  7. Efficient flooding for wireless mesh networks

    E-Print Network [OSTI]

    Subramanian, Jayashree, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    Flooding in wireless mesh networks involves distributing some data from one node to rest of the nodes in the network. This dissertation proposes UFlood, a flooding protocol for wireless mesh networks that targets large ...

  8. CS647: Advanced Topics in Wireless Networks

    E-Print Network [OSTI]

    Amir, Yair

    such as hills, buildings, or vehicles. When MS far from BS, the envelope distribution of received signalCS 647 2.1 CS647: Advanced Topics in Wireless Networks Basics of Wireless Transmission Part II Drs

  9. Wilis: Architectural Modeling of Wireless Systems

    E-Print Network [OSTI]

    Fleming, Kermin Elliott

    The performance of a wireless system depends on the wireless channel as well as the algorithms used in the transceiver pipelines. Because physical phenomena affect transceiver pipelines in difficult to predict ways, detailed ...

  10. Energy and quality scalable wireless communication

    E-Print Network [OSTI]

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

    2003-01-01

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

  11. Physical layer model design for wireless networks 

    E-Print Network [OSTI]

    Yu, Yi

    2009-06-02

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

  12. Improving performance of TCP over wireless networks 

    E-Print Network [OSTI]

    Mehta, Miten N.

    1998-01-01

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

  13. Power Allocation and Spectrum Sharing in Wireless

    E-Print Network [OSTI]

    Teneketzis, Demosthenis

    Power Allocation and Spectrum Sharing in Wireless Networks: An Implementation Theory Approach Ali problems that arise in wireless communication networks. 1.1 Chapter Organization The chapter is organized

  14. Wireless device monitoring systems and monitoring devices, and associated methods

    DOE Patents [OSTI]

    McCown, Steven H; Derr, Kurt W; Rohde, Kenneth W

    2014-05-27

    Wireless device monitoring systems and monitoring devices include a communications module for receiving wireless communications of a wireless device. Processing circuitry is coupled with the communications module and configured to process the wireless communications to determine whether the wireless device is authorized or unauthorized to be present at the monitored area based on identification information of the wireless device. Methods of monitoring for the presence and identity of wireless devices are also provided.

  15. SECURITY FOR WIRELESS NETWORKS AND DEVICES

    E-Print Network [OSTI]

    March 2003 SECURITY FOR WIRELESS NETWORKS AND DEVICES Shirley Radack, Editor, Computer Security to use. Users of wireless local area network (WLAN) devices have flexibility to move their laptop com costs. While wireless networks are exposed to many of the same risks as wired net works

  16. EEL 6591: Wireless Networks Spring 2014

    E-Print Network [OSTI]

    Latchman, Haniph A.

    EEL 6591: Wireless Networks Spring 2014 Instructor: Professor Yuguang "Michael" Fang Contact: 435-Hall, 2002. References: 1. Broadband Wireless Multimedia Networks by Benny Bing, John Wiley, 2013. 2. Wireless and Mobile Network Architecture by Yi-Bing Lin and Imrich Chlamtac, John Wiley & Sons, 2000. 3

  17. Monitoring Energy Consumption In Wireless Sensor Networks

    E-Print Network [OSTI]

    Turau, Volker

    Monitoring Energy Consumption In Wireless Sensor Networks Matthias Witt, Christoph Weyer to monitor the consump- tion of energy in wireless sensor networks based on video streams com- posed from energy consumption in both standby and active modes is the basis of wireless networks. Energy preserving

  18. Energy Cooperation in Energy Harvesting Wireless Communications

    E-Print Network [OSTI]

    Ulukus, Sennur

    Energy Cooperation in Energy Harvesting Wireless Communications Berk Gurakan1 , Omur Ozel1 , Jing the broadcast nature of the wireless network. In this work, we anticipate an energy harvesting network where transfer a portion of its energy to the relay node as in Fig. 1 through a separate wireless energy transfer

  19. TESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS

    E-Print Network [OSTI]

    Trajkovic, Ljiljana

    of Nikola Tesla #12;January 17, 2005 UBC Ljiljana Trajkovic, Simon Fraser University 9 Wireless patentsTESLA'S VISION OF THE WIRELESS GLOBAL COMMUNICATIONS Ljiljana Trajkovi Communication Networks;January 17, 2005 UBC Ljiljana Trajkovic, Simon Fraser University 2 Road map Tesla in 1890's First wireless

  20. Wireless Physical-Layer Security: Lessons Learned

    E-Print Network [OSTI]

    Yener, Aylin

    INVITED P A P E R Wireless Physical-Layer Security: Lessons Learned From Information Theory Secrecy in multiterminal wireless settings may be enhanced by judiciously introducing interference and structured signaling of these advances has been in wireless communications security, well-motivated by the fact that most data at large

  1. Wireless Roadside Inspection Proof of Concept Test

    E-Print Network [OSTI]

    Pennycook, Steve

    Wireless Roadside Inspection Proof of Concept Test Final Report Rev 1.5 May 2007 #12;FOREWORD This study focuses on the ability of a Universal Wireless Inspection System to collect driver, vehicle, and carrier information; format a Safety Data Message Set from this information; and wirelessly transmit

  2. Scheduling Wireless Links with Successive Interference Cancellation

    E-Print Network [OSTI]

    Scheduling Wireless Links with Successive Interference Cancellation Olga Goussevskaia Department@tik.ee.ethz.ch Abstract--In this paper we study the problem of scheduling wireless links in a model where successive in strength significantly. It has been shown that the problem of scheduling wireless links with successive

  3. Green Wireless Cognition: Future Efficient Spectrum Sharing

    E-Print Network [OSTI]

    Shihada, Basem

    Green Wireless Cognition: Future Efficient Spectrum Sharing Prof. Basem Shihada MCSE 1 2nd Annual and applications will live in the cloud. Users can access them anytime, anywhere. Ubiquitous highspeed wireless connectivity is a must. Dense, smallrange wireless access points (AP) will become more important than today

  4. Modeling Wireless Shadow Networks Filip De Turck

    E-Print Network [OSTI]

    Columbia University

    Modeling Wireless Shadow Networks Filip De Turck Department of Information Technology (INTEC) Ghent fail- ures. We consider wireless recovery networks as a strong candidate to provide emergency of wireless shadow networks and study their throughput as a function of the system parameters. We address

  5. Wireless Sensing and Control , Kenneth J. Lohb

    E-Print Network [OSTI]

    Lynch, Jerome P.

    Wireless Sensing and Control Yang Wanga , Kenneth J. Lohb , Jerome P. Lynchb and Kincho H. Law and Env. Engineering., University of Michigan, Ann Arbor, MI USA 48109-2125 ABSTRACT Wireless technologies and control technologies can benefit in terms of installation cost and time from wireless communication

  6. Computing Wireless Capacity Magnus M. Halldorsson

    E-Print Network [OSTI]

    Halldórsson, Magnús M.

    Computing Wireless Capacity Magn´us M. Halld´orsson Roger Wattenhofer September 27, 2010 Abstract In this paper we address two common questions in wireless communication from an algorithmic perspective, assuming a geometric path loss model: First, how long does it take to satisfy an arbitrary set of wireless

  7. A wireless LAN-based indoor

    E-Print Network [OSTI]

    Gao, Grace Xingxin

    A wireless LAN- based indoor positioning technology Z. Xiang S. Song J. Chen H. Wang J. Huang X services by exploiting user context information. In this paper, we present a wireless-local- area-network-based (WLAN-based) indoor positioning technology. The wireless device deploys a position- determination model

  8. Wireless Personal Communications An International Journal

    E-Print Network [OSTI]

    1 23 Wireless Personal Communications An International Journal ISSN 0929-6212 Volume 71 Number 4 Wireless Pers Commun (2013) 71:2693-2712 DOI 10.1007/s11277-012-0965-z Selecting the Optimal Fractional: "The final publication is available at link.springer.com". #12;Wireless Pers Commun (2013) 71

  9. Doctors and engineers develop new wireless

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Doctors and engineers develop new wireless system to detect esophageal reflux Dallas 29 May 2007) engineers have developed a wireless monitoring system that uses electrical impulses to track esophageal reflux. The wireless technology, called radio frequency identification (RFID), has been used in thousands

  10. WIRELESS BROADCAST SERVICES BY NANYAN JIANG

    E-Print Network [OSTI]

    Yates, Roy

    WIRELESS BROADCAST SERVICES BY NANYAN JIANG A thesis submitted to the Graduate School OF THE THESIS Wireless Broadcast Services by Nanyan Jiang Thesis Director: Professor Roy D. Yates In a mobile wireless communication network, broadcast signaling can be transmitted to multiple (two or more) receivers

  11. The Wireless IP Project Mikael Sternad

    E-Print Network [OSTI]

    The Wireless IP Project Mikael Sternad ¡ Signals and Systems, Uppsala University, PO Box 528,SE-751 20 Uppsala, Sweden. Abstract The optimization of resources in wireless packet data sys- tems year 2000 formed the Wireless IP project, which studies such issues. We perform research towards

  12. Wireless Sensor Networks: Scheduling for Measurement

    E-Print Network [OSTI]

    Robertazzi, Thomas G.

    Wireless Sensor Networks: Scheduling for Measurement and Data Reporting MEQUANINT MOGES, Member allocation approach is presented for measurement and data reporting in wireless sensor networks with a single involve each antenna scanning a different frequency and directional range. We emphasize here wireless

  13. The Wireless Networking and Communications Group

    E-Print Network [OSTI]

    Heath Jr., - Robert W.

    The Wireless Networking and Communications Group Impact of Spatial Correlation and Distributed Antennas for Massive MIMO Systems Kien T.Truong* and Robert W. Heath Jr. Wireless Networking://www.profheath.org ! * MIMO Wireless Inc. This work was supported by Huawei Technologies #12;2 What is Massive MIMO? A very

  14. The Wireless Networking and Communications Group

    E-Print Network [OSTI]

    Heath Jr., - Robert W.

    The Wireless Networking and Communications Group New Frontiers in Feedback for Interference://www.profheath.org November 2011 Also associated with Kuma Signals LLC and MIMO Wireless Inc. Performed by ONR grant N major best paper awards in last four years WNCG Impacts Industry Four definitive textbooks on wireless

  15. The Wireless Synchronization Problem Shlomi Dolev

    E-Print Network [OSTI]

    Lynch, Nancy

    The Wireless Synchronization Problem Shlomi Dolev Ben-Gurion University Beer-Sheva, Israel dolev Newport MIT CSAIL Cambridge, MA, USA cnewport@csail.mit.edu ABSTRACT In this paper, we study the wireless-1-60558-396-9/09/08 ...$10.00. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Wireless Net

  16. Security and Privacy Protection in Wireless

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    31 Security and Privacy Protection in Wireless Sensor Networks 31.1 Introduction 31.2 Unique applications of wireless sensor networks (WSNs). The list of potential applications that require protection Mechanisms WSNs share several important properties with traditional wireless networks, most notably

  17. Wireless Technologies Implications for Power Systems

    SciTech Connect (OSTI)

    Fuhr, Peter L; Manges, Wayne W; Schweitzer, Patrick; Kagan, Hesh

    2010-01-01

    Wireless technologies have advanced well beyond simple SCADA radio systems and point-to-point links. The current applications supported by industrial-grade wireless sensors and systems range from field measurements (classic I/O) to voice, video, asset tracking, mobile operators, etc. Which such a wide array of supported applications, the belief that wireless technology will only impact power systems in terms of wireless sensors is shortsighted. This paper, coauthored by a group of individuals intimately involved in the general realm of industrial wireless , presents a simple snapshot of current radio technologies that are used (or seriously contemplated for use) in power systems.

  18. A TinyOS-enabled MICA2-based wireless neural interface

    E-Print Network [OSTI]

    Farshchi, Shahin; Nuyujukian, Paul H; Pesterev, Aleksey; Mody, Istvan; Judy, Jack W

    2006-01-01

    wireless FM IC for biopotential recording applications,” inWireless multichannel biopotential recording using an in-

  19. Optical fiber switch

    DOE Patents [OSTI]

    Early, James W. (Los Alamos, NM); Lester, Charles S. (San Juan Pueblo, NM)

    2002-01-01

    Optical fiber switches operated by electrical activation of at least one laser light modulator through which laser light is directed into at least one polarizer are used for the sequential transport of laser light from a single laser into a plurality of optical fibers. In one embodiment of the invention, laser light from a single excitation laser is sequentially transported to a plurality of optical fibers which in turn transport the laser light to separate individual remotely located laser fuel ignitors. The invention can be operated electro-optically with no need for any mechanical or moving parts, or, alternatively, can be operated electro-mechanically. The invention can be used to switch either pulsed or continuous wave laser light.

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

    E-Print Network [OSTI]

    Li, Xiang-Yang

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

  1. WIRELESS LANS AT-A-GLANCE MOBILITY SOLUTIONS

    E-Print Network [OSTI]

    Westall, James M.

    , management servers and switches and routers with integrated wireless services can be added to the networkWIRELESS LANS AT-A-GLANCE MOBILITY SOLUTIONS WHY SHOULD I CARE ABOUT WIRELESS LANS? Wireless LANs to wireless-enabled devices such as laptops, personal digital assistants (PDAs), and IP phones, a WLAN

  2. Development and Commercialization of Alternative Carbon Fiber...

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

    Alternative Carbon Fiber Precursors and Conversion Technologies - Advanced Conversion Development and Commercialization of Alternative Carbon Fiber Precursors and Conversion...

  3. Distributed optical fiber vibration sensing 

    E-Print Network [OSTI]

    Yu, Hui

    2001-01-01

    This thesis presents a distributed optical fiber vibration sensor. The purpose of this sensing system is to monitor, in real time, the status of railcars by burying an optical fiber underground beside the rails. Using a coherent homodyne technique...

  4. Genetics of Cotton Fiber Elongation 

    E-Print Network [OSTI]

    Ng, Eng Hwa

    2013-05-29

    for growers to produce high elongation cotton; lack of research interests among breeders; and absence of a reliable fiber testing system for elongation. This study was conducted to determine the genetics of cotton fiber elongation via a diallel and generation...

  5. Automated fiber pigtailing machine

    DOE Patents [OSTI]

    Strand, O.T.; Lowry, M.E.

    1999-01-05

    The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectronic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems. 26 figs.

  6. Automated fiber pigtailing machine

    DOE Patents [OSTI]

    Strand, Oliver T. (Castro Valley, CA); Lowry, Mark E. (Castro Valley, CA)

    1999-01-01

    The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectonic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems.

  7. Silicon fiber optic sensors

    DOE Patents [OSTI]

    Pocha, Michael D. (Livermore, CA); Swierkowski, Steve P. (Livermore, CA); Wood, Billy E. (Livermore, CA)

    2007-10-02

    A Fabry-Perot cavity is formed by a partially or wholly reflective surface on the free end of an integrated elongate channel or an integrated bounding wall of a chip of a wafer and a partially reflective surface on the end of the optical fiber. Such a constructed device can be utilized to detect one or more physical parameters, such as, for example, strain, through the optical fiber using an optical detection system to provide measuring accuracies of less than aboutb0.1%.

  8. WIRELESS FOR A NUCLEAR FACILITY

    SciTech Connect (OSTI)

    Shull, D; Joe Cordaro, J

    2007-03-28

    The introduction of wireless technology into a government site where nuclear material is processed and stored brings new meaning to the term ''harsh environment''. At SRNL, we are attempting to address not only the harsh RF and harsh physical environment common to industrial facilities, but also the ''harsh'' regulatory environment necessitated by the nature of the business at our site. We will discuss our concepts, processes, and expected outcomes in our attempts to surmount the roadblocks and reap the benefits of wireless in our ''factory''.

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  10. Large core fiber optic cleaver

    DOE Patents [OSTI]

    Halpin, J.M.

    1996-03-26

    The present invention relates to a device and method for cleaving optical fibers which yields cleaved optical fiber ends possessing high damage threshold surfaces. The device can be used to cleave optical fibers with core diameters greater than 400 {micro}m. 30 figs.

  11. OF CARBON FIBERS TURBINE BLADE

    E-Print Network [OSTI]

    THE USE IN WIND DESIGN: OF CARBON FIBERS TURBINE BLADE A SERI-8BLADE EXAMPLE Cheng Printed March 2000 The Use of Carbon Fibers in Wind Turbine Blade Design: a SERI-8 Blade Example Cheng represent different volumes of carbon fibers in the blade, were also studied for two design options

  12. Large core fiber optic cleaver

    DOE Patents [OSTI]

    Halpin, John M. (Livermore, CA)

    1996-01-01

    The present invention relates to a device and method for cleaving optical fibers which yields cleaved optical fiber ends possessing high damage threshold surfaces. The device can be used to cleave optical fibers with core diameters greater than 400 .mu.m.

  13. Aerogel-clad optical fiber

    SciTech Connect (OSTI)

    Sprehn, G.A.; Hrubesh, L.W.; Poco, J.F.; Sandler, P.H.

    1997-11-04

    An optical fiber is surrounded by an aerogel cladding. For a low density aerogel, the index of refraction of the aerogel is close to that of air, which provides a high numerical aperture to the optical fiber. Due to the high numerical aperture, the aerogel clad optical fiber has improved light collection efficiency. 4 figs.

  14. Drying of fiber webs

    DOE Patents [OSTI]

    Warren, D.W.

    1997-04-15

    A process and an apparatus are disclosed for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquefied eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciatively stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers. 6 figs.

  15. Drying of fiber webs

    DOE Patents [OSTI]

    Warren, David W. (9253 Glenoaks Blvd., Sun Valley, CA 91352)

    1997-01-01

    A process and an apparatus for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquified eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciately stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers.

  16. WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST

    E-Print Network [OSTI]

    WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST Yutaka Iino* Takeshi for wireless sensor network based control system, minimizing communication energy consumption. Some control, wireless sensor network technology has been developed rapidly, and various applications to control system

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  18. When Network Coding improves the Performances of Clustered Wireless Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    When Network Coding improves the Performances of Clustered Wireless Networks that significantly increases the performances of clustering algorithms in wireless multi-hop networks-XOR coding; wireless multi-hop networks; clustering I. INTRODUCTION Partitioning nodes

  19. Estimating Wireless Network Properties with Spatial Statistics and Models

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Estimating Wireless Network Properties with Spatial Statistics and Models Janne Riihij statistics and models for different estimation problems related to wireless networks. We focus specifically wireless networks. We provide a concise survey of existing techniques from the spatial statistics

  20. ADVANCED WIRELESS CHARGING SYSTEM FOR PORTABLE ELECTRIC DEVICES 

    E-Print Network [OSTI]

    Liu, Jianyang

    2012-04-19

    This paper presents a wireless charging system for portable electric devices. The important impacts of wireless charging systems on the global environment are first examined, and the two basic methods for wireless charging are then explained...

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

    E-Print Network [OSTI]

    Huang, Yi

    2010-01-01

    estimation in energy-constrained wireless sensor networks,”a transmission energy problem for wireless sensor networks.J. Wu, “Energy-e?cient coverage problems in wireless ad hoc

  2. Wireless Advances in the Monitoring of the Human Gastrointestinal Tract

    E-Print Network [OSTI]

    Wasko, Michael Hong Lee

    2015-01-01

    that the form factor of Wireless AbStats may facilitate thepaper, the main take- away is that the wireless architectureof Wireless AbStats presented in this paper can make

  3. On the Use of Wireless Network Technologies in Healthcare Environments

    E-Print Network [OSTI]

    On the Use of Wireless Network Technologies in Healthcare Environments Nicolas Chevrollier Nada focus on Wireless Personal Area Network technologies, namely, Bluetooth and the low-rate specifications applications and examine related scalability issues. Moreover, we consider heterogeneous wireless technology

  4. Maximizing the throughput of large ad hoc wireless networks

    E-Print Network [OSTI]

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

    2006-01-01

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

  5. Bandwidth Efficient Source Tracing (BEST) Routing Protocol for Wireless Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2006-01-01

    to a real embedded wireless router. The stack uses IP as theinven- tion can be used as the basis for wireless routers.Wireless routers employing BEST will eliminate the need for

  6. Physical layer-aware wireless link layer protocols

    E-Print Network [OSTI]

    Vutukuru, Mythili

    2010-01-01

    With wireless devices becoming ubiquitous, the problem of designing high performance and reliable wireless networks is of great importance today. Wireless links are characterized by a rapidly varying channel, requiring ...

  7. Wireless Technologies for Structural Wireless Technologies for Structural Health MonitoringHealth Monitoring

    E-Print Network [OSTI]

    Wireless Technologies for Structural Wireless Technologies for Structural Health MonitoringHealth responses · Structural monitoring structural health monitoring: ­ Very few structural "health" monitoring and buildings · Future directions and technology trends Structural Monitoring SystemsStructural Monitoring

  8. Wesleyan Guest Wireless connection procedure. Please follow the procedure below for connecting to the Wesleyan Guest Wireless network.

    E-Print Network [OSTI]

    Royer, Dana

    Wesleyan Guest Wireless connection procedure. Windows #12;Please follow the procedure below for connecting to the Wesleyan Guest Wireless network. Begin by selecting the Wireless icon in the lower right

  9. Hazmat Cam Wireless Video System

    SciTech Connect (OSTI)

    Kevin L. Young

    2006-02-01

    This paper describes the Hazmat Cam Wireless Video System and its application to emergency response involving chemical, biological or radiological contamination. The Idaho National Laboratory designed the Hazmat Cam Wireless Video System to assist the National Guard Weapons of Mass Destruction - Civil Support Teams during their mission of emergency response to incidents involving weapons of mass destruction. The lightweight, handheld camera transmits encrypted, real-time video from inside a contaminated area, or hot-zone, to a command post located a safe distance away. The system includes a small wireless video camera, a true-diversity receiver, viewing console, and an optional extension link that allows the command post to be placed up to five miles from danger. It can be fully deployed by one person in a standalone configuration in less than 10 minutes. The complete system is battery powered. Each rechargeable camera battery powers the camera for 3 hours with the receiver and video monitor battery lasting 22 hours on a single charge. The camera transmits encrypted, low frequency analog video signals to a true-diversity receiver with three antennas. This unique combination of encryption and transmission technologies delivers encrypted, interference-free images to the command post under conditions where other wireless systems fail. The lightweight camera is completely waterproof for quick and easy decontamination after use. The Hazmat Cam Wireless Video System is currently being used by several National Guard Teams, the US Army, and by fire fighters. The system has been proven to greatly enhance situational awareness during the crucial, initial phase of a hazardous response allowing commanders to make better, faster, safer decisions.

  10. Joint Spectrum Allocation and Scheduling for Fair Spectrum Sharing in Cognitive Radio

    E-Print Network [OSTI]

    Misra, Satyajayant

    unlicensed wireless users (a.k.a secondary users) to sense and access the under-utilized spectrum opportunistically even if it is licensed, as long as the licensed wireless users (a.k.a primary users

  11. Recommended Practices Guide For Securing ZigBee Wireless Networks...

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

    Recommended Practices Guide For Securing ZigBee Wireless Networks in Process Control System Environments Recommended Practices Guide For Securing ZigBee Wireless Networks in...

  12. Solar-Powered Smart Wireless Camera Network for Outdoor Monitoring

    E-Print Network [OSTI]

    Abas, Kevin Mathys

    2015-01-01

    ZigbeeAlliance. The wireless zigbee standard specifications,2014. http:// zigbee.org/zigbee-for-developers/network-Sima Noghanian. Solar-powered zigbee-based wireless mo- tion

  13. ISA Approves Standard for Wireless Automation in Process Control...

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

    for Automation (ISA) approved the ISA-100.11a wireless standard, "Wireless Systems for Industrial Automation: Process Control and Related Applications," making it an official...

  14. Solar-Powered Smart Wireless Camera Network for Outdoor Monitoring

    E-Print Network [OSTI]

    Abas, Kevin Mathys

    2015-01-01

    2 Related Work Wireless Smart Cameras . . . . . .Solar-Harvesting Wireless Smart Camera Research System Forof the 1st Workshop on Distributed Smart Cameras, 2006. [51

  15. Wireless Relay Communication System for Multiple Small Robots

    E-Print Network [OSTI]

    Baumgartner, Jeremy Gordon

    2015-01-01

    Wireless Relay Communication System for Multiple SmallCRUZ WIRELESS RELAY COMMUNICATION SYSTEM FOR MULTIPLE SMALLa wire- less relay communication system is developed to test

  16. Wireless technology collects real-time information from oil and...

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

    Wireless technology collects real-time information from oil and gas wells Wireless technology collects real-time information from oil and gas wells The patented system delivers...

  17. EM's Laboratory Supports Testing Wireless Technology in Secure...

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

    Laboratory Supports Testing Wireless Technology in Secure Environment EM's Laboratory Supports Testing Wireless Technology in Secure Environment January 29, 2014 - 12:00pm Addthis...

  18. Energy-Efficient Task Assignment Framework for Wireless Sensor Networks

    E-Print Network [OSTI]

    Heemin Park; Mani B. Srivastava

    2003-01-01

    and M.B. Srivastava, Energy- Aware Wireless MicrosensorAn Energy Ef?cient Fair Scheduling Policy for Wirelessin wireless communications and spending more energy. Energy

  19. Wireless Battery Management System for Safe High-Capacity Energy...

    Office of Scientific and Technical Information (OSTI)

    Wireless Battery Management System for Safe High-Capacity Energy Storage Citation Details In-Document Search Title: Wireless Battery Management System for Safe High-Capacity Energy...

  20. Power Sources for Wireless Sensor Abstract. Wireless sensor networks are poised to become a very significant

    E-Print Network [OSTI]

    Frechette, Luc G.

    Power Sources for Wireless Sensor Networks Abstract. Wireless sensor networks are poised to become a very significant enabling technology in many sectors. Already a few very low power wireless sensor environment, alternative power sources must be employed. This paper reviews many potential power sources

  1. Magnetic Resonant Wireless Power Delivery for Distributed Sensor and Wireless Systems

    E-Print Network [OSTI]

    Cervesato, Iliano

    Magnetic Resonant Wireless Power Delivery for Distributed Sensor and Wireless Systems Brian J. Lee, Andrew Hillenius and David S. Ricketts Electrical & Computer Engineering, Carnegie Mellon University, Pittsburgh, PA 15213 Abstract-- In this paper we report on a resonant wireless power delivery system using

  2. Context-for-Wireless: Context-Sensitive Energy-Efficient Wireless Data Transfer

    E-Print Network [OSTI]

    Zhong, Lin

    Context-for-Wireless: Context-Sensitive Energy-Efficient Wireless Data Transfer Ahmad Rahmati and Lin Zhong Department of Electrical & Computer Engineering Rice University, Houston, TX 77005 {rahmati by choosing wireless interfaces for data transfers based on network condition estimation. We show

  3. Implementation of Campus-wide Wireless Network Services using ATM, Virtual LANs, and Wireless Basestations

    E-Print Network [OSTI]

    Lockwood, John W.

    Implementation of Campus-wide Wireless Network Services using ATM, Virtual LANs, and Wireless of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign 405 North Mathews Ave Urbana, IL 61801 Abstract-A campus-wide wireless LAN has been imple- mented that combines the scalability

  4. Closing the Loop over Wireless Networks:Closing the Loop over Wireless Networks: Fundamentals and Applications

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Wireless Networks: Fundamentals and Applications Karl H. Johansson Electrical Engineering, Royal Institute4/9/2008 1 Closing the Loop over Wireless Networks:Closing the Loop over Wireless Networks: Fundamentals and Applications Karl H. Johansson Electrical Engineering, Royal Institute of Technology Stockholm

  5. Fiber optic fluid detector

    DOE Patents [OSTI]

    Angel, S. Michael (Livermore, CA)

    1989-01-01

    Particular gases or liquids are detected with a fiber optic element (11, 11a to 11j) having a cladding or coating of a material (23, 23a to 23j) which absorbs the fluid or fluids and which exhibits a change of an optical property, such as index of refraction, light transmissiveness or fluoresence emission, for example, in response to absorption of the fluid. The fluid is sensed by directing light into the fiber optic element and detecting changes in the light, such as exit angle changes for example, that result from the changed optical property of the coating material. The fluid detector (24, 24a to 24j) may be used for such purposes as sensing toxic or explosive gases in the atmosphere, measuring ground water contamination or monitoring fluid flows in industrial processes, among other uses.

  6. Fiber optic fluid detector

    DOE Patents [OSTI]

    Angel, S.M.

    1987-02-27

    Particular gases or liquids are detected with a fiber optic element having a cladding or coating of a material which absorbs the fluid or fluids and which exhibits a change of an optical property, such as index of refraction, light transmissiveness or fluoresence emission, for example, in response to absorption of the fluid. The fluid is sensed by directing light into the fiber optic element and detecting changes in the light, such as exit angle changes for example, that result from the changed optical property of the coating material. The fluid detector may be used for such purposes as sensing toxic or explosive gases in the atmosphere, measuring ground water contamination or monitoring fluid flows in industrial processes, among other uses. 10 figs.

  7. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, Emil F. (Los Alamos, NM)

    1991-01-01

    A fiber optic geophysical sensor in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects.

  8. Carbon Fiber Technology Facility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels| Departmentof Energy CaliforniaContentsForumCarbon Fiber

  9. Controlled Mobility for Sustainable Wireless Networks

    E-Print Network [OSTI]

    Kansal, Aman; Rahimi, Mohammed; Kaiser, W J; Srivastava, Mani B; Pottie, Gregory; Estrin, D

    2004-01-01

    fashion. Fourth, mobility must be sustainable and constantlyControlled Mobility for Sustainable Wireless Networks Amanthe controlled mobility methods required for sustainable

  10. Wireless System Considerations When Implementing NERC Critical...

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

    Standards More Documents & Publications Recommended Practices Guide For Securing ZigBee Wireless Networks in Process Control System Environments Securing WLANs using 802.11i DOE...

  11. Wireless communication devices and movement monitoring methods

    DOE Patents [OSTI]

    Skorpik, James R.

    2006-10-31

    Wireless communication devices and movement monitoring methods are described. In one aspect, a wireless communication device includes a housing, wireless communication circuitry coupled with the housing and configured to communicate wireless signals, movement circuitry coupled with the housing and configured to provide movement data regarding movement sensed by the movement circuitry, and event processing circuitry coupled with the housing and the movement circuitry, wherein the event processing circuitry is configured to process the movement data, and wherein at least a portion of the event processing circuitry is configured to operate in a first operational state having a different power consumption rate compared with a second operational state.

  12. A Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks

    E-Print Network [OSTI]

    . Typically, a WMN is a collection of wireless mesh routers and wireless mobile mesh clients. Wireless mesh to wireless mesh routers via either wired or wireless connections. In addition, a small number of wirelessA Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks Yunxia

  13. Fiber optic sensor and method for making

    DOE Patents [OSTI]

    Vartuli, James Scott; Bousman, Kenneth Sherwood; Deng, Kung-Li; McEvoy, Kevin Paul; Xia, Hua

    2010-05-18

    A fiber optic sensor including a fiber having a modified surface integral with the fiber wherein the modified surface includes an open pore network with optical agents dispersed within the open pores of the open pore network. Methods for preparing the fiber optic sensor are also provided. The fiber optic sensors can withstand high temperatures and harsh environments.

  14. Wireless networks in non-ergodic multipath fading : capacity and relaying performance analysis

    E-Print Network [OSTI]

    Nebat, Yoav

    2007-01-01

    3 The Capacity of Wireless Networks in Non-Ergodic Multipathdiversity in wireless networks: Ef?cient protocols anddiversity in wireless networks,” IEEE Trans. Inf. Theory,

  15. Automating cross-layer diagnosis of enterprise 802.11 wireless networks

    E-Print Network [OSTI]

    Cheng, Yu-Chung

    2007-01-01

    2.1. The 802.11 wireless network protocols . . . . . . . .2.2. Wireless network measurements and characterizationsproblems . . . . . 2.4. Wireless network diagnosis

  16. Enabling rich applications and reliable data collection in embedded wireless networks with low-footprint devices

    E-Print Network [OSTI]

    Mukhopadhyay, Shoubhik

    2009-01-01

    Data Reliability in Wireless Sensor Networks . . . . . . .in Wireless Sensor Networks . . . . . . . . . . . . 3.2.1Network of enhanced wireless LAN with additional processing

  17. V-048: Cisco Wireless Lan Controller Cross-Site Request Forgery...

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

    Cisco Wireless Lan Controller Cross-Site Request Forgery Vulnerability PLATFORM: Cisco Wireless LAN Controller (WLC) ABSTRACT: A vulnerability was reported in Cisco Wireless LAN...

  18. Using Wireless Power Meters to Measure Energy Use of Miscellaneous and Electronic Devices in Buildings

    E-Print Network [OSTI]

    Brown, Richard

    2012-01-01

    a High-Fidelity Wireless Building Energy Auditing Network.Using Wireless Power Meters to Measure Energy Use ofUsing Wireless Power Meters to Measure Energy Miscellaneous

  19. MAC layer power management schemes for efficient energy- delay tradeoffs in wireless local area networks

    E-Print Network [OSTI]

    Sarkar, Mahasweta

    2006-01-01

    layer strategies for energy efficient wireless networking,”Investigating the energy consumption of a wireless networkR. R. Rao, “An Energy Aware Protocol for Wireless Networks”,

  20. Energy and task management in energy harvesting wireless sensor networks for structural health monitoring

    E-Print Network [OSTI]

    Steck, Jamie Bradley

    2009-01-01

    applied to SHiMmer, a wireless, energy-harvesting structuralthesis dis- cusses a wireless, energy-harvesting sensingManagement in Energy Harvesting Wireless Sensor Networks for

  1. Wireless Sensor Network for Improving the Energy Efficiency of Data Centers

    E-Print Network [OSTI]

    Mahdavi, Rod

    2014-01-01

    Data  Center  Energy  Use  Breakdown   Wireless  Sensor  Wireless  Sensor  Network  for  Improving  the  Energy  Wireless  Sensor  Network  for  Improving  the  Energy  

  2. Energy efficient strategies for wireless sensor networks with varying connectivity properties

    E-Print Network [OSTI]

    Kam, Clement

    2010-01-01

    B. Sri- vastava. Energy-aware wireless microsensor networks.cases, these wireless systems are energy-constrained, and itin traditional wireless sensor networks, energy conservation

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

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

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

  4. The Energy Endoscope: Real-time Detailed Energy Accounting for Wireless Sensor Nodes

    E-Print Network [OSTI]

    Stathopoulos, Thanos; McIntire, Dustin; Kaiser, W J

    2007-01-01

    meter for energy monitoring of wireless sensor networks attime Detailed Energy Accounting for Wireless Sensor Nodessuch Subsystem Energy (%) Ethernet CF Wireless PXA SDRAM

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

    E-Print Network [OSTI]

    Zhou, Ping

    2008-01-01

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

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

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2007-01-01

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

  7. Energy and task management in energy harvesting wireless sensor networks for structural health monitoring

    E-Print Network [OSTI]

    Steck, Jamie Bradley

    2009-01-01

    work in energy harvesting and wireless sensor networks.Management in Energy Harvesting Wireless Sensor Networks forapplied to SHiMmer, a wireless, energy-harvesting structural

  8. Energy efficient strategies for wireless sensor networks with varying connectivity properties

    E-Print Network [OSTI]

    Kam, Clement

    2010-01-01

    B. Sri- vastava. Energy-aware wireless microsensor networks.Passarella. Energy conservation in wireless sensor networks:SAN DIEGO Energy Efficient Strategies for Wireless Sensor

  9. Data-Semantics Driven Power Optimization of Wireless Medical Monitoring Devices

    E-Print Network [OSTI]

    Goudar, Vishwatma Arun

    2013-01-01

    Kaiser. “MicroLEAP: Energy-aware Wireless Sensor PlatformAdaptive Strategy for Energy- Efficiency in Wireless Medicaljid Sarrafzadeh. “Energy optimization in wireless medical

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

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2008-01-01

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

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

    E-Print Network [OSTI]

    Zhou, Ping

    2008-01-01

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

  12. A Wireless Sensor for Tool Temperature Measurement and its Integration within a Manufacturing System

    E-Print Network [OSTI]

    Wright, Paul K; Dornfeld, David; Hillaire, R. G; Ota, Nathan K

    2006-01-01

    G. , and Ota, N. , K. , “A Wireless Sensor for Tool pp.125-regenerative transceiver for wireless sensor networks", IEEEJ. , Culler, D. , 2002. Mica: A Wireless Platform for Deeply

  13. Personalized, Quantifiable, Multi-Layered Daily Life Profiling for Wireless Health: Methodologies and Systems

    E-Print Network [OSTI]

    Xu, James Yan

    2015-01-01

    In Proc. of World of Wireless Mobile and MultimediaClassification in Wireless Health,” IEEE Transactions onand System Evaluation in Wireless Health,” IEEE Transactions

  14. Multi-sensor Wireless System for Fault Detection in Induction Motors

    E-Print Network [OSTI]

    Tarkesh Esfahani, Ehsan

    2012-01-01

    Fault Diagnostics Using Wireless Sensor Networks,” IEEEOpportunities and Challenges of Wireless Sensor Networks inBrithinee, “The application of wireless sensor networks for

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

    E-Print Network [OSTI]

    Hu, WH; Wang, C; Bagherzadeh, N

    2015-01-01

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

  16. Wireless channel characterization at 2.4 GHz for multiple antenna systems

    E-Print Network [OSTI]

    Wood, Leslie Caroline

    2008-01-01

    Smart antennas for wireless systems," IEEE Personal Commun.and Radio Propagation Models for Wireless MIMO Systems,”EURASIP Journal on Wireless Communications and Networking,

  17. Using Wireless Power Meters to Measure Energy Use of Miscellaneous and Electronic Devices in Buildings

    E-Print Network [OSTI]

    Brown, Richard

    2012-01-01

    with a High-Fidelity Wireless Building Energy AuditingN ATIONAL L ABORATORY Using Wireless Power Meters to Measureopportunity employer. Using Wireless Power Meters to Measure

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

    E-Print Network [OSTI]

    Hu, WH; Wang, C; Bagherzadeh, N

    2015-01-01

    find optimal locations for wireless routers. Cycle-accurateoptimal locations for wireless routers so that inter-nodeoptimal locations for wireless routers (WRs) so that average

  19. Multi-Channel and Multi-Rate Adaptation for High-Throughput Wireless Networks

    E-Print Network [OSTI]

    Nguyen, Duy Duc

    2012-01-01

    experiments include wireless cards and router with Atherosexperiments include wireless cards and router with Atherosvia wired or wireless connection to AP router. In both

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

    E-Print Network [OSTI]

    Zhou, Ping

    2008-01-01

    one of the k 1 2 wireless mesh routers can transmit packetssome access points with wireless mesh routers with gatewayindicates that all wireless mesh routers contend for the

  1. Automating cross-layer diagnosis of enterprise 802.11 wireless networks

    E-Print Network [OSTI]

    Cheng, Yu-Chung

    2007-01-01

    DHCP or DNS servers, routers, wireless management gateways,DHCP or DNS servers, routers, wireless management gateways,has failed, the router between the wireless distribution

  2. Preparation of silicon carbide fibers

    DOE Patents [OSTI]

    Wei, G.C.

    1983-10-12

    Silicon carbide fibers suitable for use in the fabrication of dense, high-strength, high-toughness SiC composites or as thermal insulating materials in oxidizing environments are fabricated by a new, simplified method wherein a mixture of short-length rayon fibers and colloidal silica is homogenized in a water slurry. Water is removed from the mixture by drying in air at 120/sup 0/C and the fibers are carbonized by (pyrolysis) heating the mixture to 800 to 1000/sup 0/C in argon. The mixture is subsequently reacted at 1550 to 1900/sup 0/C in argon to yield pure ..beta..-SiC fibers.

  3. QoS Routing in Wireless Mesh Networks with Cognitive Radios

    E-Print Network [OSTI]

    Tang, Jian "Neil"

    . The emerging cognitive radio technology enables unlicensed users (a.k.a secondary users) to sense and access the under- utilized spectrum bands dynamically as long as the commu- nications among licensed users (a.k.a spread a wide range of frequencies. Different spectrum bands (a.k.a channels) can support quite different

  4. Wireless Network architecture for Diagnosis and Monitoring Applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wireless Network architecture for Diagnosis and Monitoring Applications Zeashan Hameed Khan, Jean.Genon-Catalot@iut-valence.fr Abstract-- This paper describes a distributed wireless network architecture for remote diagnosis a wireless network architecture for tele-operation of large industrial applications. Keywords- Wireless

  5. The Effect of Caching in Sustainability of Large Wireless Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Effect of Caching in Sustainability of Large Wireless Networks Georgios S. Paschos Informatics the scalability and the efficiency for the future networks. In this landscape, wireless networks are considered]. Despite their worldwide deployment, wireless networks are mostly confined tof wireless networks is limited

  6. Disaster Recovery in Wireless Networks: A Homology-Based Algorithm

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Disaster Recovery in Wireless Networks: A Homology-Based Algorithm A. Vergne, I. Flint, L of wireless networks after a disaster. Considering a damaged wireless network, presenting coverage holes or cover problem. I. INTRODUCTION Wireless networks are present everywhere, must it be sensor networks

  7. Homology based algorithm for disaster recovery in wireless networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Homology based algorithm for disaster recovery in wireless networks A. Vergne, I. Flint, L for disaster recovery of wireless networks. We consider a damaged wireless network presenting coverage holes the performances between each other and with known methods. I. INTRODUCTION Wireless networks are present

  8. UCIT Data Network Standards Campus Wireless Network Standard

    E-Print Network [OSTI]

    Habib, Ayman

    UCIT Data Network Standards Campus Wireless Network Standard Classification IT Infrastructure Table.1. Standardization of the U of C's 802.11 wireless networks and frequency bands is required to insure availability of the wireless network to the campus community. Standards of use will improve the wireless service and help

  9. Energy-efficient wireless networking for multimedia applications

    E-Print Network [OSTI]

    Havinga, Paul J.M.

    Energy-efficient wireless networking for multimedia applications (Wireless Communications state-of-the-art solutions with a focus on energy efficiency. Three key problems in networked wireless in achieving this. Keywords ­ energy efficiency, wireless networking, mobile computing, quality of service. 1

  10. Efficient wireless non-radiative mid-range energy transfer

    E-Print Network [OSTI]

    Efficient wireless non-radiative mid-range energy transfer Aristeidis Karalis a,*, J.D. Joannopoulos b , Marin Soljacic´ b a Department of Electrical Engineering and Computer Science, Massachusetts-range wireless energy transfer. Ó 2007 Elsevier Inc. All rights reserved. Keywords: Wireless energy; Wireless

  11. Load Balancing in Wireless Sensor Networks using Kirchhoff's Voltage Law

    E-Print Network [OSTI]

    Toumpis, Stavros

    Load Balancing in Wireless Sensor Networks using Kirchhoff's Voltage Law Stavros Toumpis Electrical balancing in wireless networks with a single class of traffic, focusing our attention on an important example, i.e., Wireless Sensor Networks. The analysis is based on the Wireless Minimum Cost Problem

  12. Special Section on: Dynamic Charging of Electric Vehicles by Wireless

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    Special Section on: Dynamic Charging of Electric Vehicles by Wireless Power Transfer I N RECENT TIMES, wireless power charging of electric vehicles (EV) has gained huge attentions. Static wireless charging systems Mass transit electrification (electric trains, trams, and buses) us- ing dynamic wireless

  13. Video Pricing for Wireless Networks Patrick Seeling and Martin Reisslein

    E-Print Network [OSTI]

    Reisslein, Martin

    Video Pricing for Wireless Networks Patrick Seeling and Martin Reisslein Dept. of Electrical to wireless clients is one of the key requirements for making wireless video services economically viable. In this paper we develop a conceptual framework for the pricing of wireless video streaming. Our framework

  14. Wireless Sensing for Structural Health Monitoring of Civil Infrastructures

    E-Print Network [OSTI]

    Stanford University

    in southern New Mexico. With wireless radios consuming large amounts of power, energy preservation can1 Wireless Sensing for Structural Health Monitoring of Civil Infrastructures J.P. Lynch1 , Y. Wang2-cost wireless sensing unit for installation in structural monitoring systems. The prototype wireless sensing

  15. Impact of Lossy Links on Performance of Multihop Wireless Networks

    E-Print Network [OSTI]

    Holte, Robert

    wireless networks have energy constraints. Lossy links also affect energy efficiency due to retransmissions of overhearing on energy efficiency. I. INTRODUCTION Research in multihop wireless networks, such as wireless ad simulation. The problem of maxi- mizing the lifetime of a wireless ad hoc network with energy constraints

  16. UNM Wireless Network Standard Revision August 5, 2014

    E-Print Network [OSTI]

    New Mexico, University of

    1 UNM Wireless Network Standard Revision August 5, 2014 Date Issued: June 5, 2007 Responsible/b/g/n/ac) and related access points connect to the UNM IT Wireless Network (WN). No other departments shall deploy IEEE, robust, and integrated wireless network, and to increase security of the campus wireless network

  17. Wireless Social Community Networks: A Game-Theoretic Analysis

    E-Print Network [OSTI]

    Marbach, Peter

    Wireless Social Community Networks: A Game-Theoretic Analysis Mohammad Hossein Manshaei, Julien: marbach@cs.toronto.edu Abstract--Wireless social community networks have been cre- ated as an alternative to cellular wireless networks to provide wireless data access in urban areas. By relying on access points

  18. Wireless Network Security Partha Dasgupta and Tom Boyd

    E-Print Network [OSTI]

    Dasgupta, Partha

    Wireless Network Security Partha Dasgupta and Tom Boyd Dept. of Computer Science and Engineering Fulton School of Engineering Arizona State University partha@asu.edu, tboyd@asu.edu Abstract Wireless, there are a variety of attack methods that can be used against the users of wireless networks. Modern wireless data

  19. Modeling and Analysis of WAP Performance over Wireless Links

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    Modeling and Analysis of WAP Performance over Wireless Links Humphrey Rutagemwa, Student Member the performance behaviors of wireless application protocol (WAP) over wireless links is proposed. A Rayleigh fading channel model is used to characterize the behaviors of wireless channel. Mathematical expressions

  20. Wireless Communication Is in APX Magnus M. Halldorsson1,

    E-Print Network [OSTI]

    Wireless Communication Is in APX Magn´us M. Halld´orsson1, and Roger Wattenhofer2 1 School a common question in wireless com- munication: How long does it take to satisfy an arbitrary set of wireless communication requests? This problem is known as the wireless schedul- ing problem. Our main

  1. TITLE: Wireless Multimedia Architectures and Applications DURATION: Half day

    E-Print Network [OSTI]

    Furht, Borko

    SEMINAR TITLE: Wireless Multimedia Architectures and Applications DURATION: Half day INSTRUCTOR: Dr efforts to establish a wireless infrastructure, including declaring a new wireless spectrum, building new is to link present "wireless realities" to the future of technology. It should bring to participants 21st

  2. Wireless Tomography, Part II: A System Engineering Approach

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Wireless Tomography, Part II: A System Engineering Approach R. C. Qiu, Z. Hu, M. C. Wicks, S. J.Wicks@rl.af.mil Abstract--This is the second paper in a series on a new initiative of wireless tomography. The goal is to combine two areas: wireless communication and radio tomography. This paper studies wireless tomography

  3. Wired Wireless Broadcast Emulation Daniel Havey, Roman Chertov, Kevin Almeroth

    E-Print Network [OSTI]

    Almeroth, Kevin C.

    Wired Wireless Broadcast Emulation Daniel Havey, Roman Chertov, Kevin Almeroth Department, rchertov, almeroth} @cs.ucsb.edu Abstract-A wired testbed's usefulness for wireless re search hinges on its ability to faithfully reproduce the wireless medium. One of the key properties of a wireless medium is its

  4. Intentional Mobility in Wireless Sensor Networks 1 INTENTIONAL MOBILITY IN

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    applications, wireless sensor networks. 1. Introduction The rapid growth of micro-sensing MEMS and wirelessIntentional Mobility in Wireless Sensor Networks 1 Chapter 1 INTENTIONAL MOBILITY IN WIRELESS SENSOR NETWORKS You-Chiun Wang and Yu-Chee Tseng Department of Computer Science National Chiao

  5. WIRELESS SENSING AND DECENTRALIZED CONTROL FOR CIVIL STRUCTURES: THEORY AND

    E-Print Network [OSTI]

    Lynch, Jerome P.

    WIRELESS SENSING AND DECENTRALIZED CONTROL FOR CIVIL STRUCTURES: THEORY AND IMPLEMENTATION the last few decades. With recent advances in wireless communication technology, wireless networks can advantage of a wireless system is the ease of relocating sensors and controllers, thus providing a flexible

  6. Wireless Network Optimization by Perron-Frobenius Theory

    E-Print Network [OSTI]

    Tan, Chee Wei

    Wireless Network Optimization by Perron-Frobenius Theory Chee Wei Tan City University of Hong Kong Abstract--A basic question in wireless networking is how to optimize the wireless network resource of a Perron-Frobenius theoretic framework to overcome the notorious non-convexity barriers in wireless util

  7. Carbon Fiber Cluster Strategy | ornl.gov

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

    Carbon Fiber Cluster Strategy SHARE Carbon Fiber Cluster Strategy ORNL has a 40-year history in R&D on fiber-reinforced composite materials, and has been leading DOE's low-cost...

  8. Energy Harvesting Wireless Communications-Part I

    E-Print Network [OSTI]

    Ulukus, Sennur

    #12;Motivation Energy efficient communication means something different than it did a decade ago-medical-devices-controlled-wireless-technology-nanotechnology/ (bottom) http://scitechdaily.com/smart-pills-will-track-patients-from-the-inside-out/ Energy Harvesting;Motivation New Wireless Network Design Challenge: A set of energy feasibility constraints based on harvests

  9. Applications of Industrial Wireless Sensor Milan Erdelj

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    applications is vital for the production in all the branches of industry. 3. Process automation. The last group1 Applications of Industrial Wireless Sensor Networks Milan Erdelj FUN Research Group, INRIA Lille manuscript, published in "Industrial Wireless Sensor Networks: Applications, Protocols, and Standards CRC

  10. Predictable and Controllable Wireless Sensor Networks

    E-Print Network [OSTI]

    Sreenan, Cormac J.

    .roedig|c.sreenan}@cs.ucc.ie Abstract: Research activity in the area of wireless sensor networks has grown dramatically in the past few and reliability, raising concerns over their use in scenarios like mission critical production environments on Wireless Sensor Networks [1]. The volume of activity is further illustrated by recent IEEE magazines

  11. Wireless Sensor Networks Lecture 1: Introduction

    E-Print Network [OSTI]

    Maróti, Miklós

    Harvard University 4 Wireless Technologies Comparison Data rate Complexity/power/cost CC1000 Bluetooth 802 University 5 Wireless Technologies Comparison Type Data rate Transmit pwr Range (approx) Cost 802.11b 11Ptr, Vanderbilt #12;2009 ­© Matt Welsh Harvard University 10 Solar panels for charging car battery (used by Free

  12. Monitoring Churn in Wireless g Stephan Holzer

    E-Print Network [OSTI]

    Monitoring Churn in Wireless g Networks Stephan Holzer Yvonne Anne Pignolet ETH Zurich Roger Wattenhofer #12;Motivation / Intro Network of sensor nodes: · wireless, communicating on several · battery powered All nodes should be aware of all present nodes · with small delay · with little energy

  13. Solar/Electromagnetic Energy Harvesting and Wireless

    E-Print Network [OSTI]

    Tentzeris, Manos

    INVITED P A P E R Solar/Electromagnetic Energy Harvesting and Wireless Power Transmission This paper reviews numerous existing efforts and solutions in the field of solar and electromagnetic energy of solar/electromagnetic energy harvest- ing and wireless power transmission. More specifically, the paper

  14. A Retasking Framework For Wireless Sensor Networks

    E-Print Network [OSTI]

    Weigle, Michele

    used in scientific research, industrial manufacturing, and environmental monitoring over the past-effective. In this paper, we present Alert, a software framework for retasking wireless sensor networks, enabling, built upon Deluge [1], is a wireless network code distribution protocol enabling node group management

  15. Optimizing Router Placement for Wireless Mesh Deployment

    E-Print Network [OSTI]

    Chan, Shueng-Han Gary

    Optimizing Router Placement for Wireless Mesh Deployment Wangkit Wong Simbarashe Dzinamarira S-channel (MRMC) wireless mesh networks (WMNs) is largely affected by interference, which depends on router router placement changes network topology which in turns impacts routing and channel decisions, while

  16. Ferry-Based Linear Wireless Sensor Networks

    E-Print Network [OSTI]

    Wu, Jie

    Networks Existing wireless sensor network research Assumption that the network used for sensors does of oil, gas, and water pipeline infrastructure using wireless sensor networks. #12;IEEE Globecom 2013 UAE (2006): 2,580 Km of gas pipelines 2,950 Km of oil pipelines 156 Km of refined products

  17. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, E.F.

    1991-03-19

    A fiber optic geophysical sensor is described in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects. 2 figures.

  18. Dark Fiber Testbed

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HAB Packet HanfordDOEDaniel Shechtman andDark Fiber Testbed Network

  19. CSP 545: Wireless Networking Technologies and Applications Yi-Bing Lin, Imrich Chlamtac, Wireless and Mobile Network Architectures.

    E-Print Network [OSTI]

    Heller, Barbara

    CSP 545: Wireless Networking Technologies and Applications Texts Yi-Bing Lin, Imrich Chlamtac, Wireless and Mobile Network Architectures. Reference: Theodore S. Rappaport, Theodore Rappaport, Wireless local area network technologies including 802.11b (wireless Ethernet) and Bluetooth, and third

  20. 2294 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 6, NO. 6, JUNE 2007 Wireless Profiled TCP Performance over

    E-Print Network [OSTI]

    Shen, Xuemin "Sherman"

    2294 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 6, NO. 6, JUNE 2007 Wireless Profiled TCP Performance over Integrated Wireless LANs and Cellular Networks Humphrey Rutagemwa, Student Member, IEEE-- An analytical framework for studying the per- formance of Wireless Profiled TCP (WP-TCP) flows over

  1. Wirelessly-Powered Wireless Sensor Platform T. Paing, J. Morroni, A. Dolgov, J. Shin, J. Brannan, R. Zane, Z. Popovic

    E-Print Network [OSTI]

    Wirelessly-Powered Wireless Sensor Platform T. Paing, J. Morroni, A. Dolgov, J. Shin, J. Brannan, R-power (~10W) 2.45-GHz wireless sensor platform consisting of a three-axis accelerometer, thermometer and skin conductivity sensor. The sensor is powered wirelessly from a distance of around 3-4m with narrowband 2.45-GHz

  2. Carbon Fiber Technology Facility | Department of Energy

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

    Carbon Fiber Technology Facility Carbon Fiber Technology Facility 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

  3. Natural Fiber Composites: Retting, Preform Manufacture & Molding...

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

    Natural Fiber Composites: Retting, Preform Manufacture & Molding Natural Fiber Composites: Retting, Preform Manufacture & Molding 2009 DOE Hydrogen Program and Vehicle Technologies...

  4. CFTF | Carbon Fiber Technology Facility | ORNL

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

    BTRIC CNMS CSMB CFTF Working with CFTF HFIR MDF NTRC OLCF SNS Carbon Fiber Technology Facility Home | User Facilities | CFTF CFTF | Carbon Fiber Technology Facility SHARE Oak...

  5. Pleated Ceramic Fiber Diesel Particulate Filter | Department...

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

    Pleated Ceramic Fiber Diesel Particulate Filter Pleated Ceramic Fiber Diesel Particulate Filter 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  6. Fiber Grating Environmental Sensing System

    DOE Patents [OSTI]

    Schulz, Whitten L. (Fairview, OR); Udd, Eric (Fairview, OR)

    2003-07-29

    Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.

  7. Wireless Charging | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About1996HowFOAShowingFuelWeatherize » AirareAbout KeyofWireless Charging

  8. Opportunities to save energy and improve comfort by using wireless sensor networks in buildings

    E-Print Network [OSTI]

    Wang, Danni; Arens, Edward; Federspiel, Cliff

    2003-01-01

    realization of ultra-low energy wireless sensor networks.TO SAVE ENERGY AND IMPROVE COMFORT BY USING WIRELESS SENSOR

  9. Final Report: Mobile Surveillance and Wireless Communication Systems Field Operational Test Volume 2: FOT Objectives, Organization, System Design, Results, Conclusions and Recommendations

    E-Print Network [OSTI]

    Klein, Lawrence

    1999-01-01

    and Wireless Communication Systems Field Operational Testand Wireless Communication Systems Field Operational Testand Wireless Communication Systems Field Operational Test

  10. EM threat analysis for wireless systems.

    SciTech Connect (OSTI)

    Burkholder, R. J. (Ohio State University Electroscience Laboratory); Mariano, Robert J.; Schniter, P. (Ohio State University Electroscience Laboratory); Gupta, I. J. (Ohio State University Electroscience Laboratory)

    2006-06-01

    Modern digital radio systems are complex and must be carefully designed, especially when expected to operate in harsh propagation environments. The ability to accurately predict the effects of propagation on wireless radio performance could lead to more efficient radio designs as well as the ability to perform vulnerability analyses before and after system deployment. In this report, the authors--experts in electromagnetic (EM) modeling and wireless communication theory--describe the construction of a simulation environment that is capable of quantifying the effects of wireless propagation on the performance of digital communication.

  11. System and method for time synchronization in a wireless network

    DOE Patents [OSTI]

    Gonia, Patrick S. (Maplewood, MN); Kolavennu, Soumitri N. (Blaine, MN); Mahasenan, Arun V. (Kerala, IN); Budampati, Ramakrishna S. (Maple Grove, MN)

    2010-03-30

    A system includes multiple wireless nodes forming a cluster in a wireless network, where each wireless node is configured to communicate and exchange data wirelessly based on a clock. One of the wireless nodes is configured to operate as a cluster master. Each of the other wireless nodes is configured to (i) receive time synchronization information from a parent node, (ii) adjust its clock based on the received time synchronization information, and (iii) broadcast time synchronization information based on the time synchronization information received by that wireless node. The time synchronization information received by each of the other wireless nodes is based on time synchronization information provided by the cluster master so that the other wireless nodes substantially synchronize their clocks with the clock of the cluster master.

  12. Provisioning of Parameterized Quality of Service in 802.11e Based Wireless Mesh Networks

    E-Print Network [OSTI]

    Chu, Xiaowen

    is shown in Fig. 1, whose backbone consists of a set of wireless mesh routers. Wireless stations (i.e., end users) can access the Internet by associating with a nearby wireless mesh router. Given that IEEE 802 Gateway Wireless Mesh Router Wireless Stations Fig. 1: An example of infrastructure wireless mesh network

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

    E-Print Network [OSTI]

    Wong, Vincent

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

  14. WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2009; 9:773784

    E-Print Network [OSTI]

    . Typically, a WMN is a collection of wireless mesh routers and wireless mobile mesh clients. Wireless mesh connect to wireless mesh routers via either wired or wireless connections. In addition, a small number of wireless mesh routers, called gateways, can directly connect to wired net- works via wired links. Therefore

  15. Methods of producing continuous boron carbide fibers

    DOE Patents [OSTI]

    Garnier, John E.; Griffith, George W.

    2015-12-01

    Methods of producing continuous boron carbide fibers. The method comprises reacting a continuous carbon fiber material and a boron oxide gas within a temperature range of from approximately 1400.degree. C. to approximately 2200.degree. C. Continuous boron carbide fibers, continuous fibers comprising boron carbide, and articles including at least a boron carbide coating are also disclosed.

  16. Distributed Connectivity of Wireless Networks

    E-Print Network [OSTI]

    Halldorsson, Magnus M

    2012-01-01

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

  17. Ethanol extraction of phytosterols from corn fiber

    DOE Patents [OSTI]

    Abbas, Charles (Champaign, IL); Beery, Kyle E. (Decatur, IL); Binder, Thomas P. (Decatur, IL); Rammelsberg, Anne M. (Decatur, IL)

    2010-11-16

    The present invention provides a process for extracting sterols from a high solids, thermochemically hydrolyzed corn fiber using ethanol as the extractant. The process includes obtaining a corn fiber slurry having a moisture content from about 20 weight percent to about 50 weight percent solids (high solids content), thermochemically processing the corn fiber slurry having high solids content of 20 to 50% to produce a hydrolyzed corn fiber slurry, dewatering the hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, washing the residual corn fiber, dewatering the washed, hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, and extracting the residual corn fiber with ethanol and separating at least one sterol.

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

    DOE Patents [OSTI]

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

    2011-12-13

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

  19. Fiber Laser Based Nonlinear Spectroscopy

    E-Print Network [OSTI]

    Adany, Peter

    2012-08-31

    To date, nonlinear spectroscopy has been considered an expensive technique and confined mostly to experimental laboratory settings. Over recent years, optical-fiber lasers that are highly reliable, simple to operate and relatively inexpensive have...

  20. Scintillator fiber optic long counter

    DOE Patents [OSTI]

    McCollum, Tom (Sterling, VA); Spector, Garry B. (Fairfax, VA)

    1994-01-01

    A flat response position sensitive neutron detector capable of providing neutron spectroscopic data utilizing scintillator fiber optic filaments embedded in a neutron moderating housing having an open end through which neutrons enter to be detected.

  1. High repetition rate fiber lasers

    E-Print Network [OSTI]

    Chen, Jian, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    This thesis reports work in high repetition rate femtosecond fiber lasers. Driven by the applications including optical arbitrary waveform generation, high speed optical sampling, frequency metrology, and timing and frequency ...

  2. Scintillator fiber optic long counter

    DOE Patents [OSTI]

    McCollum, T.; Spector, G.B.

    1994-03-29

    A flat response position sensitive neutron detector capable of providing neutron spectroscopic data utilizing scintillator fiber optic filaments embedded in a neutron moderating housing having an open end through which neutrons enter to be detected is described. 11 figures.

  3. Buried fiber optic intrusion sensor 

    E-Print Network [OSTI]

    Maier, Eric William

    2004-09-30

    piezoelectric transducer to produce a controllable optical phase shift at the 2 km point of a 12 km path length. Interrogation of the distributed sensor was accomplished by repetitively gating light pulses from the stable laser into the sensing fiber...

  4. Random access wireless networks with controlled mobility

    E-Print Network [OSTI]

    Modiano, Eytan H.

    This paper considers wireless networks where messages arriving randomly (in time and space) are collected by a mobile receiver. The messages are transmitted to the mobile receiver according to a random access scheme and ...

  5. Intelligent Lighting System Using Wireless Sensor Networks

    E-Print Network [OSTI]

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

    2011-01-01

    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.

  6. Maximizing degrees of freedom in wireless networks

    E-Print Network [OSTI]

    Borade, Shashibhushan Prataprao, 1981-

    2004-01-01

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

  7. Designing a wireless underwater optical communication system

    E-Print Network [OSTI]

    Brundage, Heather

    2010-01-01

    Though acoustic modems have long been the default wireless communication method for underwater applications due to their long range, the need for high speed communication has prompted the exploration of non-acoustic methods ...

  8. Iterative Collision Resolution in Wireless Networks 

    E-Print Network [OSTI]

    Stuckman, Katherine Christine

    2013-03-29

    With the growing popularity of smart phones and tablets, development of multimedia applications is on the rise. Speedy transmission of this massive amount information is already pushing the limits of the capacity of wireless networks...

  9. Efficient wireless charging with gallium nitride FETs

    E-Print Network [OSTI]

    Yeh, Theresa (Theresa I.)

    2014-01-01

    Though wireless charging is more convenient than traditional wired charging methods, it is currently less efficient. This not only wastes power but can also result in a longer charging time. Improving the efficiency of ...

  10. Wireless power transmission for medical applications

    E-Print Network [OSTI]

    Payne, Joshua E.

    We studied the wireless power transmission capabilities of microwave through human skin-tissue. Microwave transmission through simulated human skins was tested with rectenna array as a power receiver located under the ...

  11. 3D face recognition with wireless transportation 

    E-Print Network [OSTI]

    Zou, Le

    2009-05-15

    , we consider the wireless transportation problem of range images, which are captured by scattered sensor nodes from target objects and are forwarded to the core components (i.e., feature extraction and classi?cation components) of the face recognition...

  12. Integrating spinal codes into wireless systems

    E-Print Network [OSTI]

    Iannucci, Peter Anthony

    2013-01-01

    Rateless spinal codes [47] promise performance gains for future wireless systems. These gains can be realized in the form of higher data rates, longer operational ranges, reduced power consumption, and greater reliability. ...

  13. Energy aware network coding in wireless networks

    E-Print Network [OSTI]

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

    2012-01-01

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

  14. Efficient network camouflaging in wireless networks 

    E-Print Network [OSTI]

    Jiang, Shu

    2006-04-12

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

  15. Energy Management in Wireless Sensor Network Operations 

    E-Print Network [OSTI]

    Mohapatra, Arupa Kumar

    2013-07-26

    In this dissertation, we develop and analyze effective energy management policies for wireless sensor networks in emerging applications. Existing methods in this area have primarily focused on energy conservation through the use of various...

  16. Interference management in wireless cellular networks 

    E-Print Network [OSTI]

    Burchardt, Harald Peter

    2013-07-01

    In wireless networks, there is an ever-increasing demand for higher system throughputs, along with growing expectation for all users to be available to multimedia and Internet services. This is especially difficult to ...

  17. Improving wireless network performance using sensor hints

    E-Print Network [OSTI]

    Sivalingam, Lenin Ravindranath

    2010-01-01

    Users of wireless devices often switch between being stationary and in motion while transferring data. Protocols that perform well in the static setting (where the channel conditions are relatively stable), however, tend ...

  18. MIXIT: The Network Meets the Wireless Channel

    E-Print Network [OSTI]

    Katti, Sachin

    2007-09-04

    The traditional contract between the network and the lower layers states that the network does routing and the lower layers deliver correct packets. In a wireless network, however, different nodes may hear most bits in a ...

  19. Flexible Hardware Abstraction for Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Berkeley, University of

    Flexible Hardware Abstraction for Wireless Sensor Networks Vlado Handziski, Joseph Polastre, Jan; Computer Science Department Berkeley, CA 94720 US Abstract-- We present a flexible Hardware Abstraction gradually adapts the capabilities of the underlying hardware plat- forms to the selected platform

  20. Acoustical Communications for Wireless Downhole Telemetry Systems 

    E-Print Network [OSTI]

    Farraj, Abdallah

    2012-08-22

    This dissertation investigates the use of advanced acoustical communication techniques for wireless downhole telemetry systems. Using acoustic waves for downhole telemetry systems is investigated in order to replace the wired communication systems...

  1. Robust Clock Synchronization in Wireless Sensor Networks 

    E-Print Network [OSTI]

    Saibua, Sawin

    2010-10-12

    Clock synchronization between any two nodes in a Wireless Sensor Network (WSNs) is generally accomplished through exchanging messages and adjusting clock offset and skew parameters of each node’s clock. To cope with unknown network message delays...

  2. Epidemic Propagation In Overlaid Wireless Networks

    SciTech Connect (OSTI)

    Yanmaz, Evsen [Los Alamos National Laboratory

    2008-01-01

    Witb tbe emergence of computer worms tbat can spread over air interfaces, wireless ad boc and sensor networks can be vulnerable to node compromises even if the deployed network is not connected to the backbone. Depending on the physical topology of the wireless network, even a single infected node can compromise the whole network. In this work, epidemic (e.g., worm) propagation in a static wireless network is studied, where a number of inCected mobile nodes are injected over the existing network. It is shown that the epidemic spread threshold and size depend on the physical topology of the underlying static wireless network as well as the mobility model employed by the infected mobile nodes. More specifically, results show that in a Cully-connected static wirelessnctwork targeted attacks are more effective, wbereas Cor a random topology random attacks can be sufficient to compromise the whole network.

  3. On computer vision in wireless sensor networks.

    SciTech Connect (OSTI)

    Berry, Nina M.; Ko, Teresa H.

    2004-09-01

    Wireless sensor networks allow detailed sensing of otherwise unknown and inaccessible environments. While it would be beneficial to include cameras in a wireless sensor network because images are so rich in information, the power cost of transmitting an image across the wireless network can dramatically shorten the lifespan of the sensor nodes. This paper describe a new paradigm for the incorporation of imaging into wireless networks. Rather than focusing on transmitting images across the network, we show how an image can be processed locally for key features using simple detectors. Contrasted with traditional event detection systems that trigger an image capture, this enables a new class of sensors which uses a low power imaging sensor to detect a variety of visual cues. Sharing these features among relevant nodes cues specific actions to better provide information about the environment. We report on various existing techniques developed for traditional computer vision research which can aid in this work.

  4. Optical fiber sensor having a sol-gel fiber core and a method of making

    DOE Patents [OSTI]

    Tao, Shiquan; Jindal, Rajeev; Winstead, Christopher; Singh, Jagdish P.

    2006-06-06

    A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cladding. Alternatively, air can be used as a low refractive index medium. The sol-gel fibers have a micro pore structure which allows molecules to diffuse into the fiber core from the surrounding environment. Chemical and biochemical reagents can be doped into the fiber core. The sol-gel fiber can be used as a transducer for constructing an optical fiber sensor. The optical fiber sensor having an active sol-gel fiber core is more sensitive than conventional evanescent wave absorption based optical fiber sensors.

  5. AeroLab Wireless Network Code of Conduct The AeroLab wireless network is intended for academic use only. Any use of the

    E-Print Network [OSTI]

    Sislian, J. P.

    AeroLab Wireless Network Code of Conduct The AeroLab wireless network is intended for academic use only. Any use of the wireless network for BitTorrent or other Peer-to-Peer file sharing is strictly will have their wireless access privileges revoked. Connecting to the AeroLab Wireless Network This document

  6. Invited Paper Optical Wireless Applications -A Solution to Ease the Wireless

    E-Print Network [OSTI]

    Kavehrad, Mohsen

    themselves of these aforementioned services. Advances in displays, battery technology and processing power to explode in the next 5 years, largely due to the proliferation of mobile video and mobile web applicationsInvited Paper Optical Wireless Applications - A Solution to Ease the Wireless Airwaves Spectrum

  7. GNU Radio & USRPGNU Radio & USRP File transfer through WirelessFile transfer through Wireless

    E-Print Network [OSTI]

    Yu, Chansu

    1 GNU Radio & USRPGNU Radio & USRP File transfer through WirelessFile transfer through WirelessSachin Hirve April 30, 2008April 30, 2008 Contents:Contents: What is Software Radio?What is Software Radio? USRPUSRP ­­ MultiMulti--functional hardwarefunctional hardware GNU RadioGNU Radio Previous Work

  8. New and Emerging Energy Efficient Wireless Protocols New and Emerging Energy Efficient Wireless

    E-Print Network [OSTI]

    Jain, Raj

    New and Emerging Energy Efficient Wireless Protocols 1 of 12 New and Emerging Energy Efficient energy efficient wireless protocols. The benefits of each protocol are given, and then the different ways of conserving energy are compared. Key Words- Energy efficient protocols, energy efficiency, energy aware, low

  9. Optical fiber inspection system

    DOE Patents [OSTI]

    Moore, F.W.

    1985-04-05

    A remote optical inspection system including an inspection head. The inspection head has a passageway through which pellets or other objects are passed. A window is provided along the passageway through which light is beamed against the objects being inspected. A plurality of lens assemblies are arranged about the window so that reflected light can be gathered and transferred to a plurality of coherent optical fiber light guides. The light guides transfer the light images to a television or other image transducer which converts the optical images into a representative electronic signal. The electronic signal can then be displayed on a signal viewer such as a television monitor for inspection by a person. A staging means can be used to support the objects for viewing through the window. Routing means can be used to direct inspected objects into appropriate exit passages for accepted or rejected objects. The inspected objects are advantageously fed in a singular manner to the staging means and routing means. The inspection system is advantageously used in an enclosure when toxic or hazardous materials are being inspected. 10 figs.

  10. Fiber optic temperature sensor

    SciTech Connect (OSTI)

    Rabold, D.

    1995-12-01

    Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

  11. A LASER-BASED MONODISPERSE CARBON FIBER GENERATOR

    E-Print Network [OSTI]

    Loo, Billy W.

    2013-01-01

    BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,

  12. Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber...

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

    Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber Production, Reduces Carbon Fiber Costs by 30% Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber...

  13. Low Frequency Wireless Communications Technology

    SciTech Connect (OSTI)

    Bartone, Erik J; Carbone, John F

    2004-01-27

    The purpose of this project was to demonstrate Nxegen's real-time wireless electricity monitoring and load management technologies in selected commercial, industrial, and municipal end user facilities. The purpose of which is to demonstrate the ability for Nxegen's technology to collect real-time electricity data to a central location (Nxegen's Network Operation Center "NOC"), aggregate customer load profiles into portfolios of profiles, and be able to dispatch load curtailment commands from the NOC to individual customer loads to demonstrate the ability to integrate demand resources into the overall electric utility system for the purpose of; (1) improving overall system reliability, (2) reducing wholesale electric generation prices (locational marginal prices "LMP"), and (3) reducing congestion costs in energy constrained areas (southwest Connecticut).

  14. Computing the Capacity Region of a Wireless Network

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    We consider a wireless network of n nodes that communicate over a common wireless medium under some interference constraints. Our work is motivated by the need for an efficient and distributed algorithm to determine the ...

  15. Wireless realtime motion tracking system using localised orientation estimation 

    E-Print Network [OSTI]

    Young, Alexander D.

    2010-01-01

    A realtime wireless motion tracking system is developed. The system is capable of tracking the orientations of multiple wireless sensors, using a semi-distributed implementation to reduce network bandwidth and latency, ...

  16. Dynamic channel allocation in satellite and wireless networks

    E-Print Network [OSTI]

    Sun, Jun, 1975-

    2007-01-01

    The objective of this thesis is to understand how to utilize wireless channels in a fair and efficient manner within a multi-users communication environment. We start by exploring the allocation of a single wireless downlink ...

  17. On-Demand Based Wireless Resources Trading for Green Communications

    E-Print Network [OSTI]

    Cheng, Wenchi; Zhang, Hailin; Wang, Qiang

    2011-01-01

    The purpose of Green Communications is to reduce the energy consumption of the communication system as much as possible without compromising the quality of service (QoS) for users. An effective approach for Green Wireless Communications is On-Demand strategy, which scales power consumption with the volume and location of user demand. Applying the On-Demand Communications model, we propose a novel scheme -- Wireless Resource Trading, which characterizes the trading relationship among different wireless resources for a given number of performance metrics. According to wireless resource trading relationship, different wireless resources can be consumed for the same set of performance metrics. Therefore, to minimize the energy consumption for given performance metrics, we can trade the other type of wireless resources for the energy resource under the demanded performance metrics. Based on the wireless resource trading relationship, we derive the optimal energy-bandwidth and energy-time wireless resource trading ...

  18. Airblue: A System for Cross-Layer Wireless Protocol Development

    E-Print Network [OSTI]

    Ng, Man Cheuk

    Over the past few years, researchers have developed many crosslayer wireless protocols to improve the performance of wireless networks. Experimental evaluations of these protocols have been carried out mostly using ...

  19. Study of distributed Fair Scheduling in wireless local area networks 

    E-Print Network [OSTI]

    Gupta, Seema

    2000-01-01

    A Fair Scheduling policy is required to support differentiated QoS requirements of contending flows in a wireless channel. This thesis presents a study of the Distributed Fair Scheduling (DFS) algorithm proposed for wireless Local Area Networks...

  20. Improved Long-Distance Wireless Charging Technology September 26, 2013

    E-Print Network [OSTI]

    Langendoen, Koen

    Improved Long-Distance Wireless Charging Technology September 26, 2013 Project Overview Wireless charging of consumer devices at a long distance with RF technology, would eliminate wires and give freedom

  1. Delayed response protocols for high-delay wireless networks 

    E-Print Network [OSTI]

    Sadry, Nauzad Erach

    2002-01-01

    Wireless networks have become more prevalent over the last few years. These networks introduce different types of errors, which are due to the unpredictable nature of the wireless channel. The congestion control algorithms of existing TCP protocols...

  2. Mobileflow: Applying SDN to Mobility in Wireless Networks 

    E-Print Network [OSTI]

    Al-Shaikhli, Raghdah

    2014-08-10

    Wireless technology has become an increasingly popular way for network access. Wireless networks provide efficient, reliable service; supporting a broad range of emerging applications including multimedia streaming and video conferencing. Currently...

  3. Power Management Mechanism Exploiting Network and Video Information over Wireless

    E-Print Network [OSTI]

    Bouras, Christos

    Power Management Mechanism Exploiting Network and Video Information over Wireless Links Christos information from higher network layers may be utilized for more efficient power management in wireless- tune transmission power according to information received from the transport (feedback reports from

  4. Multidisciplinary adaptive wireless communication systems: Reconfigurable MEMS integrated antennas &

    E-Print Network [OSTI]

    De Flaviis, Franco

    Multidisciplinary adaptive wireless communication systems: Reconfigurable MEMS integrated antennas of California, Irvine, USA Wireless communication systems with reconfigurability capabilities that can for the next generation communication scenarios. A communication system capable of changing its output

  5. Implementing a wireless base station for a sensor network

    E-Print Network [OSTI]

    Song, Heewon, 1977-

    2004-01-01

    Using wireless sensor networks for monitoring infrastructure is a new trend in civil engineering. Compared with traditional ways to monitor infrastructure, wireless sensor networks are cheap, safe, and compact. However, ...

  6. Energy Efficiency of Cooperative Jamming Strategies in Secure Wireless Networks

    E-Print Network [OSTI]

    Ghaderi, Majid

    Energy Efficiency of Cooperative Jamming Strategies in Secure Wireless Networks Mostafa Dehghan networks. Index Terms Wireless security, cooperative diversity, cooperative beamforming, energy efficiency Department of Electrical, Electronic, and Computer Engineering, Newcastle University, UK Abstract Energy

  7. X-by-wireless: a novel approach to vehicle control 

    E-Print Network [OSTI]

    Hoelscher, David Louis

    2009-05-15

    As the cost of wireless devices approaches zero, it becomes more feasible to replace wires with wireless communication. Vehicle wiring harnesses are traditionally wired to communicate both power and information simultaneously, resulting in separate...

  8. ENERGY EFFICIENCY AND SECURITY FOR MULTIHOP WIRELESS NETWORKS

    E-Print Network [OSTI]

    Vaidya, Nitin

    ENERGY EFFICIENCY AND SECURITY FOR MULTIHOP WIRELESS NETWORKS BY MATTHEW JEFFERSON MILLER B over wireless channels demands confidentiality and integrity. In the energy efficiency domain that marginal gains in battery energy density necessitate energy efficient protocols. In the security realm

  9. An energy efficient RF transceiver for wireless microsensor networks

    E-Print Network [OSTI]

    Daly, Denis Clarke

    2005-01-01

    A wireless microsensor network consists of a group of sensor nodes that are deployed remotely and used to relay sensing data to the end-user. Due to their remote deployment, large scale wireless sensor networks require a ...

  10. A Greedy Distributed Time Synchronization Algorithm for Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    synchronizations performed. I. INTRODUCTION With the advance in various enabling technologies like Micro-Electro-Mechanical System (MEMS), signal process- ing and wireless communication, wireless sensor networks (WSNs) have drawn

  11. Multi-hop routing for wireless mesh networks

    E-Print Network [OSTI]

    Bhorkar, Abhijeet

    2012-01-01

    of mesh routers to transport the traffic of wireless clientchosen among mesh routers. Wireless mesh backbone can bewireless interface (AR 5213). The nodes are connected to the internet through a Power Over Ethernet router:

  12. Enhancing spectrum utilization through cooperation and cognition in wireless systems

    E-Print Network [OSTI]

    Rahul, Hariharan Shankar, 1975-

    2013-01-01

    We have seen a proliferation of wireless technologies and devices in recent years. The resulting explosion of wireless demand has put immense pressure on available spectrum. Improving spectrum utilization is therefore ...

  13. Microsoft Word - Wireless Automation World for OE FINAL.doc

    Energy Savers [EERE]

    When Implementing NERC Critical Infrastructure Protection Standards. The paper addresses wireless protection issues arising from requirements of the Critical Infrastructure...

  14. 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.

  15. OIT Wireless Telemetry for Industrial Applications

    SciTech Connect (OSTI)

    Manges, WW

    2002-09-03

    The need for advanced wireless technology has been identified in the National Research Council publication (1) ''Manufacturing Process Controls for the Industries of the Future as a Critical Technology for the Future''. The deployment challenges to be overcome in order for wireless to be a viable option include: (1) eliminating interference (assuring reliable communications); (2) easing the deployment of intelligent, wireless sensors; (3) developing reliable networks (robust architectures); (4) developing remote power (long-lasting and reliable); and (5) developing standardized communication protocols. This project demonstrated the feasibility of robust wireless sensor networks that could meet these requirements for the harsh environments common to the DOE/OIT Industries of the Future. It resulted in a wireless test bed that was demonstrated in a paper mill and a steel plant. The test bed illustrated key protocols and components that would be required in a real-life, wireless network. The technologies for low power connectivity developed and demonstrated at the plant eased fears that the radios would interfere with existing control equipment. The same direct sequence, spread spectrum (DSSS) technology that helped assure the reliability of the connection also demonstrated that wireless communication was feasible in these plants without boosting the transmitted power to dangerous levels. Our experience and research have indicated that two key parameters are of ultimate importance: (1) reliability and (2) inter-system compatibility. Reliability is the key to immediate acceptance among industrial users. The importance cannot be overstated, because users will not tolerate an unreliable information network. A longer term issue that is at least as important as the reliability of a single system is the inter-system compatibility between these wireless sensor networks and other wireless systems that are part of our industries. In the long run, the ability of wireless sensor networks to operate cooperatively in an environment that includes wireless LANs, wireless headsets, RF heating, wireless crane controls and many other users of the electromagnetic spectrum will probably be the most important issue we can address. A network of units (Figure 1) has been developed that demonstrates the feasibility of direct-sequence spread spectrum wireless sensor networking for industrial environments. The hardware consists of a group of reprogrammable transceivers that can act as sensor nodes or network nodes or both. These units and the team that built them are the heart of a test bed development system that has been used successfully in demonstrations at various industrial sites. As previously reported, these units have been successfully tested at a paper mill. More recently, these units were utilized in a permanent installation at a steel mill. Both of these applications demonstrated the ease with which a new network could be installed, and the reality that DSSS units can operate successfully in plants where narrow band transmitters had previously caused interference with plant operations.

  16. Carbon nanotube fiber spun from wetted ribbon

    DOE Patents [OSTI]

    Zhu, Yuntian T; Arendt, Paul; Zhang, Xiefei; Li, Qingwen; Fu, Lei; Zheng, Lianxi

    2014-04-29

    A fiber of carbon nanotubes was prepared by a wet-spinning method involving drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, wetting the ribbon with a liquid, and spinning a fiber from the wetted ribbon. The liquid can be a polymer solution and after forming the fiber, the polymer can be cured. The resulting fiber has a higher tensile strength and higher conductivity compared to dry-spun fibers and to wet-spun fibers prepared by other methods.

  17. Proc. of IEEE Wireless Communications and Networking Conference (WCNC), March 2003 Mobility Patterns in Microcellular Wireless Networks

    E-Print Network [OSTI]

    Peha, Jon M.

    Proc. of IEEE Wireless Communications and Networking Conference (WCNC), March 2003 Mobility Patterns in Microcellular Wireless Networks Suttipong Thajchayapong and Jon M. Peha Department of Electrical and Computer Engineering Carnegie Mellon University 5000 Forbes Ave, Pittsburgh, PA 15213 Emails

  18. Blacklist-Aided Forwarding in Static Multihop Wireless Networks

    E-Print Network [OSTI]

    Minnesota, University of

    Blacklist-Aided Forwarding in Static Multihop Wireless Networks Srihari Nelakuditi, Sanghwan Lee,yyu,ghlu,zhzhang}@cs.umn.edu Abstract-- Static broadband wireless networks, due to their ease of deployment, are likely to proliferate link quality fluctuations is needed for accelerating the growth of these networks. Most of the wireless

  19. Traffic-Aware Video Streaming in Broadband Wireless Networks

    E-Print Network [OSTI]

    Ansari, Nirwan

    Traffic-Aware Video Streaming in Broadband Wireless Networks Ehsan Haghani and Nirwan Ansari Shyam in the Internet. Streaming real-time video in wireless networks is a challenging problem due to the stringent video quality at the end user in wireless networks. Our solution incorporates the characteristics

  20. Robust Planning of Green Wireless Networks Grit Claen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Robust Planning of Green Wireless Networks Grit Claßen RWTH Aachen University Lehrstuhl II f@umic.rwth-aachen.de Abstract--Current methods dealing with the energy efficient wireless network planning problem require a robust optimization model for the energy-efficient planning of wireless networks and apply cutting planes

  1. Policy 130 ver 1 Title: Management of the Wireless Network

    E-Print Network [OSTI]

    Karczmarek, Joanna

    Policy 130 ver 1 Title: Management of the Wireless Network Cover - Heading Information Table Page-President, Academic and Provost Title: Management of the Wireless Network Preamble - Background & Purposes The Problem functions and duties. The UBC wireless network, provided by UBC IT, is part of UBC's telecommunications

  2. On the Capacity of Hybrid Wireless Networks Benyuan Liu

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    On the Capacity of Hybrid Wireless Networks Benyuan Liu , Zhen Liu + , Don Towsley Department 704 Yorktown Heights, NY 10598 Abstract-- We study the throughput capacity of hybrid wireless networks stations are assumed to be connected by a high-bandwidth wired network and act as relays for wireless nodes

  3. On the Throughput Capacity of Heterogeneous Wireless Networks

    E-Print Network [OSTI]

    Latchman, Haniph A.

    On the Throughput Capacity of Heterogeneous Wireless Networks Pan Li, Member, IEEE, and Yuguang of wireless networks. However, it is commonly assumed that all nodes in the network are identical. The issue of heterogeneous wireless networks with general network settings. Specifically, we consider an extended network

  4. Percolation in multi-hop wireless networks Massimo Franceschetti1

    E-Print Network [OSTI]

    Meester, Ronald

    Percolation in multi-hop wireless networks Massimo Franceschetti1 , Lorna Booth, Matthew Cook2 of Technology, 3 Vrije Universiteit Amsterdam Abstract Models of wireless ad-hoc and sensor networks are often in practice. Keywords: wireless ad-hoc networks, continuum percolation, Boolean model, ran- dom connection

  5. Announced Dynamic Access Probability protocol for next generation wireless networks

    E-Print Network [OSTI]

    Levy, Hanoch

    Announced Dynamic Access Probability protocol for next generation wireless networks Z. NAOR #3; H probability. Keywords: wireless networks, multiple access, MAC #3; naorz@post.tau.ac.il y hanoch@cs.tau.ac.il 1 #12; 1 Introduction Wireless networks are rapidly expanding. Future satellite-based networks

  6. SINR Diagrams: Convexity and its Applications in Wireless Networks

    E-Print Network [OSTI]

    SINR Diagrams: Convexity and its Applications in Wireless Networks Chen Avin Yuval Emek Erez Kantor and quality of connections in a wireless network are described by physical models such as the signal the behavior of wireless networks, and may play a key role in the development of suitable algorithms

  7. On Adjusting Power to Defend Wireless Networks from Jamming

    E-Print Network [OSTI]

    Xu, Wenyuan

    1 On Adjusting Power to Defend Wireless Networks from Jamming Wenyuan Xu Department of Computer}@engr.sc.edu Abstract-- Wireless networks are susceptible to accidental or intentional radio interference. One way, we turn to examining the more complicated scenario consisting of a multi- hop wireless network. We

  8. Flow-based XOR Network Coding for Lossy Wireless Networks

    E-Print Network [OSTI]

    Wu, Jie

    1 Flow-based XOR Network Coding for Lossy Wireless Networks Abdallah Khreishah, Issa M. Khalil, Pouya Ostovari, and Jie Wu Abstract--A practical way for maximizing the throughput of a wireless network. We also extend our 2-hop relay networks results to multihop wireless networks by providing a linear

  9. Wireless Networks in Rural Areas: Challenges and Solutions

    E-Print Network [OSTI]

    Dyer, Bill

    Wireless Networks in Rural Areas: Challenges and Solutions Shen Wan April 25, 2009 Abstract In this thesis proposal, we discuss the current limitations and chal- lenges in wireless networks, especially in rural, remote or areas with rough terrains. Although traditional wireless networking technologies have

  10. Assessment and Event Based Analysis of Dynamic Wireless Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Assessment and Event Based Analysis of Dynamic Wireless Networks Denis Carvin1,2, Guillaume Kremer1 of mobile nodes in networks is significantly changing the way they are managed. Indeed, these wireless-estimation algorithm for wireless mobile networks. We then provide events' collection and distributed mining methods

  11. Towards All-IP Wireless Networks: Architectures and Resource Management

    E-Print Network [OSTI]

    Boutaba, Raouf

    Towards All-IP Wireless Networks: Architectures and Resource Management Mechanism Majid Ghaderi-IP network integrating different wireless technologies using IP and its associated service models. The first to facilitate the integration of wireless LAN and 3G cellular networks towards a uniform architecture for all

  12. Blacklist-Aided Forwarding in Static Multihop Wireless Networks

    E-Print Network [OSTI]

    Nelakuditi, Srihari

    Blacklist-Aided Forwarding in Static Multihop Wireless Networks Srihari Nelakuditi , Sanghwan Lee,yyu,glu,zhzhang£ @cs.umn.edu Abstract-- Static broadband wireless networks, due to their ease of deployment, are likely of the wireless routing schemes proposed in the literature are less suitable for these networks

  13. Non-Cryptographic Authentication and Identification in Wireless Networks

    E-Print Network [OSTI]

    California at Davis, University of

    1 Non-Cryptographic Authentication and Identification in Wireless Networks Kai Zeng, Kannan considered as potential alternatives/complements to provide security services in wireless networks identi- fication in wireless networks using lower/physical layer properties or information. We discuss

  14. ECN Marking for Congestion Control in Multihop Wireless Networks

    E-Print Network [OSTI]

    Siris, Vasilios A.

    ECN Marking for Congestion Control in Multihop Wireless Networks Vasilios A. Siris and Despina an approach to increase TCP's fair- ness in multihop wireless networks, using ECN as a congestion signalling demonstrate that our approach can improve TCP's fairness in a multihop wireless network compared to drop tail

  15. Maximizing Throughput in Wireless Networks with Finite Internal Buffers

    E-Print Network [OSTI]

    Chang, Cheng-Shang

    Maximizing Throughput in Wireless Networks with Finite Internal Buffers Ching-Min Lien, Cheng of a discrete-time wireless network, where only certain sets of links can transmit simultaneously. It is well of the configuration vectors determines the capacity region of the wireless network. In the literature, packet

  16. What Is the Use of Collision Detection (in Wireless Networks)?

    E-Print Network [OSTI]

    What Is the Use of Collision Detection (in Wireless Networks)? Johannes Schneider1 , Roger on the task by investigating three prominent problems for wireless networks, i.e. the maximal independent set constant c. 1 Introduction When studying distributed algorithms for wireless networks, the algorithm de

  17. A Framework for the Capacity Evaluation of Multihop Wireless Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Framework for the Capacity Evaluation of Multihop Wireless Networks Herv´e Rivano CNRS - INRIA and localized CDS. Index Terms--network capacity, multihop wireless networks, upper and lower bounds, linear programing I. INTRODUCTION Ad hoc networks are spontaneous multihop topologies of wireless nodes

  18. Securing Wireless Networks from ARP Cache Presented to

    E-Print Network [OSTI]

    Stamp, Mark

    Securing Wireless Networks from ARP Cache Poisoning A Project Presented to The Faculty _____________________________________________________________ APPROVED FOR THE UNIVERSITY #12;Roney Philip CS298 Report SJSUi ABSTRACT Securing Wireless Networks from ARP Cache Poisoning by Roney Philip Wireless networks have become an integral part of today's networks

  19. Maximizing Static Network Lifetime of Wireless Broadcast Adhoc Networks

    E-Print Network [OSTI]

    Poovendran, Radha

    of the important applications of wireless static adhoc net- works includes wireless sensor networks. The technology- cast routing over wireless static adhoc network where host mobility is not involved. We define the lifetime of a network as the dura- tion of time until the first node failure due to battery depletion. We

  20. TOPICS IN PROBABILISTIC LOCATION ESTIMATION IN WIRELESS NETWORKS

    E-Print Network [OSTI]

    Myllymäki, Petri

    TOPICS IN PROBABILISTIC LOCATION ESTIMATION IN WIRELESS NETWORKS Petri Kontkanen, Petri Myllym;TOPICS IN PROBABILISTIC LOCATION ESTIMATION IN WIRELESS NETWORKS Petri Kontkanen, Petri Myllym¨aki, Teemu, Spain, IEEE Press, 2004. TOPICS IN PROBABILISTIC LOCATION ESTIMATION IN WIRELESS NETWORKS Petri

  1. An overview of wireless structural health monitoring for civil structures

    E-Print Network [OSTI]

    Lynch, Jerome P.

    An overview of wireless structural health monitoring for civil structures BY JEROME PETER LYNCH that could greatly impact the field of structural monitoring and infrastructure asset management. This paper explicitly intended for implementation in civil structures. Wireless sensing units integrate wireless

  2. TCP ACK Control for Wireless Networks Wan Gang Zeng

    E-Print Network [OSTI]

    Trajkovic, Ljiljana

    Road map Motivation TCP and wireless networks Wireless TCP performance Proposed algorithm: ACK Control 7 TCP: RTT, RTO and Karn's algorithm RTO is calculated based on RTT and RTT deviation Karn, h g = 1/8 = 0.125, h = ¼ = 0.25 RTO = srtt + 4 rttvar #12;June 8, 2004 Wireless TCP ACK Control 8

  3. Power-Efficient Adaptable Wireless Sensor Networks , David Evans2

    E-Print Network [OSTI]

    Evans, David

    Power-Efficient Adaptable Wireless Sensor Networks John Lach1 , David Evans2 , Jon McCune3 , Jason the flexibility necessary for the adaptations required of wireless sensor networks without the penalties Engineering3 , Pittsburgh, PA 15213 Abstract Wireless sensor networks represent a new data collection paradigm

  4. Power and Delay Optimization in Multi-Hop Wireless Networks

    E-Print Network [OSTI]

    Shihada, Basem

    In this paper, we study the optimization problem of transmission power and delay in a multi-hop wireless network of transmission power and queueing delay in wireless networks has1 Power and Delay Optimization in Multi-Hop Wireless Networks Li Xia, Basem Shihada Abstract

  5. Modelling and Analysis of Wireless Sensor Networks with Energy

    E-Print Network [OSTI]

    Modelling and Analysis of Wireless Sensor Networks with Energy Harvesting Capabilities Nan Wu and energy harvesting may exceed the gain by using them. So, it can be seen as a trade-off in Wireless Sensor a generic modelling framework which can be used to model and analyze energy harvesting aware Wireless Sensor

  6. Resource Management for Fading Wireless Channels with Energy Harvesting Nodes

    E-Print Network [OSTI]

    Ulukus, Sennur

    Resource Management for Fading Wireless Channels with Energy Harvesting Nodes Omur Ozel1 , Kaya This paper considers wireless communication using energy harvesting transmitters. In such a scenario, Pennsylvania State University, University Park, PA 16802 Abstract--Wireless systems comprised of rechargeable

  7. Energy Ef cient Routing With Unreliable Links in Wireless Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    Energy Ef cient Routing With Unreliable Links in Wireless Networks Xiang-Yang Li Dept. of Compt24@iit.edu Abstract Energy ef cient routings and power control tech- niques in wireless networks have wireless link layers by integrating the power control techniques into the energy ef cient routing. We study

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

    E-Print Network [OSTI]

    Liang, Weifa

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

  9. Energy Attacks and Defense Techniques for Wireless Systems

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    Energy Attacks and Defense Techniques for Wireless Systems Sheng Wei Jong Hoon Ahnn Miodrag {shengwei, jhahnn, miodrag}@cs.ucla.edu ABSTRACT This paper addresses the energy attacks towards wireless in the wireless systems and trigger ultra-high energy increases at runtime. Then, we develop a non-destructive HT

  10. Energy Consumption in Coded Queues for Wireless Information Exchange

    E-Print Network [OSTI]

    Boucherie, Richard J.

    Energy Consumption in Coded Queues for Wireless Information Exchange Jasper Goseling, Richard J customers. We use this relation to ob- tain bounds on the energy consumption in a wireless information. In this work we will analyze the energy consumption of coded wireless networks under the scenario that the ar

  11. Information Delivery in Large Wireless Networks with Minimum Energy Expense

    E-Print Network [OSTI]

    Wang, Wenye

    Information Delivery in Large Wireless Networks with Minimum Energy Expense Yi Xu and Wenye Wang in large-scale multihop wireless networks because of the limited energy supplies from batteries. We and strategies that reduce energy consumption in wireless net- works to extend network lifetimes. Examples

  12. Wireless Sensor Networks for Structural Health Monitoring by Sukun Kim

    E-Print Network [OSTI]

    California at Berkeley, University of

    Wireless Sensor Networks for Structural Health Monitoring by Sukun Kim Research Project Submitted James W. Demmel Second Reader (Date) #12;Wireless Sensor Networks for Structural Health Monitoring Copyright Spring 2005 by Sukun Kim #12;i Abstract Wireless Sensor Networks for Structural Health Monitoring

  13. Minimum Energy Broadcast and Disk Cover in Grid Wireless Networks

    E-Print Network [OSTI]

    Calamoneri, Tiziana

    on the energy power supplied to the station. In particular, the power Ps required by a station s to Research assignment for a given set S of n stations of an ad hoc wireless network that allows a source station-hoc wireless network consists of a set S of radio stations connected by wireless links. We assume that stations

  14. Virtualizing Power Cords by Wireless Power Transmission and Energy Harvesting

    E-Print Network [OSTI]

    Tentzeris, Manos

    existing wireless power transfer scheme, this method can deliver electric power over a wide range, there is a general need to remove the electrical cords from rooms at low cost. If the wireless communication different methods. The first approach routes electric power by wireless transfer on two-dimensional surfaces

  15. Towards Integrated PSEs for Wireless Communications: Experiences with the S

    E-Print Network [OSTI]

    Ramakrishnan, Naren

    ¥ Wireless Networking and Communications Group (WNCG) Department of Electrical and Computer EngineeringTowards Integrated PSEs for Wireless Communications: Experiences with the S W and SitePlanner R¦ , Jing Jiang¦ , and William H. Tranter¦ ¢ Wireless Valley Communications, Inc. Austin, TX 78758 £ Google

  16. STOCHASTIC CONTROL FOR DISTRIBUTED SYSTEMS WITH APPLICATIONS TO WIRELESS

    E-Print Network [OSTI]

    Huang, Minyi

    STOCHASTIC CONTROL FOR DISTRIBUTED SYSTEMS WITH APPLICATIONS TO WIRELESS COMMUNICATIONS Minyi Huang Departement of Electrical and Computer Engineering McGill University, Montr´eal June 2003 A Thesis submitted and optimization of distributed stochastic systems motivated by current wireless applications. In wireless

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

    E-Print Network [OSTI]

    Zhuang, Weihua

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

  18. EE 815.3 (3L) Fundamentals of Wireless Communications

    E-Print Network [OSTI]

    Saskatchewan, University of

    EE 815.3 (3L) Fundamentals of Wireless Communications Department of Electrical and Computer Engineering Fall 2014 Description: The goal of this course is to study the fundamentals of wireless background in probability and random processes. Examples from existing wireless communications standards

  19. Cooperative Decentralized Resource Allocation in Heterogeneous Wireless Access Medium

    E-Print Network [OSTI]

    Zhuang, Weihua

    1 Cooperative Decentralized Resource Allocation in Heterogeneous Wireless Access Medium Muhammad--In this paper, radio resource allocation in a hetero- geneous wireless access medium is investigated. Mobile the performance tradeoffs of the proposed algorithm. Index Terms--Heterogeneous wireless networks, resource allo

  20. Illinois Wireless Wind Tunnel: A Testbed for Experimental Evaluation of

    E-Print Network [OSTI]

    Vaidya, Nitin

    Illinois Wireless Wind Tunnel: A Testbed for Experimental Evaluation of Wireless Networks Nitin H. Vaidya Jennifer Bernhard V. V. Veeravalli P. R. Kumar R. K. Iyer Department of Electrical and Computer of the testbed is to imple- ment "scaled" versions of wireless networks for the purpose of accurate repeatable

  1. Admission Control Framework to Provide Guaranteed Delay in Errorprone Wireless

    E-Print Network [OSTI]

    Sarkar, Saswati

    1 Admission Control Framework to Provide Guaranteed Delay in Error­prone Wireless Channel Prasanna Chaporkar and Saswati Sarkar Abstract We consider a wireless system in which sessions traverse different­prone wireless system. By ``general'' we mean that the scheduling policies from a large class can be plugged

  2. Wireless Multicasting via Iterative Optimization Lihua Wan and Jie Luo

    E-Print Network [OSTI]

    Luo, J. Rockey

    Wireless Multicasting via Iterative Optimization Lihua Wan and Jie Luo Electrical & Computer}@engr.colostate.edu Abstract-- A class of wireless multicast utility optimization problems are considered. Assume network in a wireless network can be characterized using a configuration graph. Network layer utility optimization can

  3. What Is the Use of Collision Detection (in Wireless Networks)?

    E-Print Network [OSTI]

    .g. there is energy on the channel in a wireless network. This model is called the collision detection modelWhat Is the Use of Collision Detection (in Wireless Networks)? Johannes Schneider1 , Roger collision detection depends heavily on the task by investigating three prominent problems for wireless

  4. Brief Contributions________________________________________________________________________________ Topology Control of Ad Hoc Wireless

    E-Print Network [OSTI]

    Poon, Chung Keung

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

  5. DISS. ETH NO. 18300 Algorithmic Challenges in Wireless Networks

    E-Print Network [OSTI]

    DISS. ETH NO. 18300 Algorithmic Challenges in Wireless Networks Interference, Energy and Incentives impossible. In order to prolong the lifetime of a network, energy-efficient algorithms for wireless networks of minimizing delay and energy consumption simultaneously. Usually, wireless devices of a network are assumed

  6. SDJS: The Duck Hunter Problem in Wireless Sensor Networks

    E-Print Network [OSTI]

    Beigl, Michael

    SDJS: The Duck Hunter Problem in Wireless Sensor Networks Albert Krohn, Tobias Zimmer, Michael) is a new transmission scheme targeted to highly mobile and ad hoc wireless sys- tems. It is based of devices in a mobile wireless ad hoc network. This new approach can increase the speed of the estimation

  7. Robust Target Localization from Binary Decisions in Wireless Sensor Networks

    E-Print Network [OSTI]

    Levina, Liza

    Wireless sensor networks (WSN) are becoming an important tool in a variety of tasks, including mon- itoring on Wireless Sensor Networks (WSN) Detection, identification and tracking of spatial phenomena are important, computing and storage capabilities. In a WSN, the nodes are linked by a wireless medium ­ radio, infrared

  8. Local Monitoring and Maintenance for Operational Wireless Sensor

    E-Print Network [OSTI]

    Wu, Jie

    Local Monitoring and Maintenance for Operational Wireless Sensor Networks Md Zakirul Alam Bhuiyan@gmail.com; csgjwang@gmail.com #12;Local Monitoring and Maintenance for Operational Wireless Sensor Networks 16 Monitoring and Maintenance for Operational Wireless Sensor Networks 16/7/2013 IEEE ISPA-13, Melbourne

  9. WIRELESS SENSING FOR STRUCTURAL HEALTH MONITORING OF CIVIL STRUCTURES

    E-Print Network [OSTI]

    Lynch, Jerome P.

    1 WIRELESS SENSING FOR STRUCTURAL HEALTH MONITORING OF CIVIL STRUCTURES J.P. Lynch1 , Y. Wang2 , A possible damage. This paper describes the design of a low-cost wireless sensing unit for installation in structural monitoring systems. The prototype wireless sensing unit is intended to 1) collect measurement data

  10. Diagnosing Wireless TCP Performance Problems: A Case Study

    E-Print Network [OSTI]

    Williamson, Carey

    Diagnosing Wireless TCP Performance Problems: A Case Study Tianbo Kuang Fang Xiao Carey Williamson}@cpsc.ucalgary.ca January 30, 2003 Abstract Researchers have long realized that TCP performance degrades over wireless links. This paper studies how these solutions perform in a wireless LAN network environment. The experiments

  11. Wireless Roadside Inspec on (WRI) Field Opera onal Test (FOT)

    E-Print Network [OSTI]

    Wireless Roadside Inspec on (WRI) Field Opera onal Test (FOT) The U.S. Department of Transportation (DOT) Federal Motor Carrier Safety Administration (FMCSA) has commissioned the Wireless Roadside inspections using wireless technologies that convey real-time identification of commercial vehicles, drivers

  12. Access Point Selection for Improving Throughput Fairness in Wireless LANs

    E-Print Network [OSTI]

    Siris, Vasilios A.

    Access Point Selection for Improving Throughput Fairness in Wireless LANs Vasilios A. Siris investigate the problem of access point selection in wireless LANs based on the IEEE 802.11 standard, when solely at the wireless stations, which passively monitor the activity of each access point's channel

  13. Wireless sensor networks under the random pairwise key predistribution scheme

    E-Print Network [OSTI]

    Yagan, Osman

    Wireless sensor networks under the random pairwise key predistribution scheme: Can resiliency, College Park, MD 20742. Email: armand@isr.umd.edu Abstract--We investigate the resiliency of wireless the classical key predistribution scheme of Eschenauer and Gligor. Keywords: Wireless sensor networks, Security

  14. TCP over Wireless Multi-hop Protocols: Simulation and Experiments

    E-Print Network [OSTI]

    Wang, Lan

    TCP over Wireless Multi-hop Protocols: Simulation and Experiments Mario Gerla, Rajive Bagrodia, Lixia Zhang, Ken Tang, Lan Wang {gerla, rajive, lixia, ktang, lanw}@cs.ucla.edu Wireless Adaptive http://www.cs.ucla.edu/NRL/wireless Abstract In this study we investigate the interaction between TCP

  15. Wireless Security: Secure and Public Networks Villanova University

    E-Print Network [OSTI]

    36 Wireless Security: Secure and Public Networks Kory Kirk Villanova University Computer Science kory.kirk@villanova.edu www.korykirk.com/ Abstract Due to the increasing amount of wireless, train stations and cafes, there is a need for a wireless protocol that allows public access to secure

  16. Asymptotics for Provisioning Problems of Peering Wireless LANs

    E-Print Network [OSTI]

    Weber, Richard

    Asymptotics for Provisioning Problems of Peering Wireless LANs with a Large Number of Participants. We consider a model in which wireless LANs are to be provided in a number of locations. The owners and contribution requirements can be easily communicated to the participants. 1 Peer to peer networks of wireless

  17. Secure Wireless Payment Protocol School of Computer Science

    E-Print Network [OSTI]

    Kranakis, Evangelos

    Secure Wireless Payment Protocol Hong Wang School of Computer Science Carleton University 1125 Colonel By Drive, Ottawa, Canada Abstract With the convergence of wireless data communication and the Internet, more and more Internet services are now being used in the wireless area. Mobile payment protocols

  18. Wireless Sensing and Structural Control Strategies Kincho H. Law1

    E-Print Network [OSTI]

    Stanford University

    Wireless Sensing and Structural Control Strategies Kincho H. Law1 , Andrew Swartz2 , Jerome P from wireless communication and embedded computing technologies in terms of installation cost and time. Our prior research has developed low-cost wireless sensing systems for structural monitoring

  19. Wireless Security in the Home and Office Environment

    E-Print Network [OSTI]

    Kranakis, Evangelos

    Wireless Security in the Home and Office Environment Michel Barbeau School of Computer Science, 2010 Abstract The ubiquity of wireless communications, in the home and office environment, introduces, to the security of wireless communications, that are real and the ones that are inoffensive. Examples related

  20. Performance Analysis of Multi-Channel Wireless Infrastructure Networks

    E-Print Network [OSTI]

    Ramasubramanian, Srinivasan

    between channels with some tuning delay. A node is a stationary wireless router which is mounted usuallyPerformance Analysis of Multi-Channel Wireless Infrastructure Networks Sangman Cho, Srinivasan, Washington, DC 20052 Abstract--Wireless infrastructure networks that provide ubiq- uitous connectivity

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

    E-Print Network [OSTI]

    Littman, Michael L.

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

  2. Router Placement in Wireless Sensor Networks Michael Ahlberg

    E-Print Network [OSTI]

    Vlassov, Vladimir

    Router Placement in Wireless Sensor Networks Michael Ahlberg School of Information be met by placing as few routers as possible. I. INTRODUCTION Wireless sensor networks are a relatively Electric Corporation Amagasaki, Japan Email: Yasui.Terumasa@db.mitsubishielectric.co.jp Abstract-- Wireless

  3. TCP Westwood: Bandwidth Estimation for Enhanced Transport over Wireless Links

    E-Print Network [OSTI]

    a congested router is indeed the likely reason of packet loss; on a wireless link, on the other hand, a noisyTCP Westwood: Bandwidth Estimation for Enhanced Transport over Wireless Links Saverio Mascolo congestion window algorithm that improves upon the performance of TCP Reno in wired as well as wireless

  4. Treatment-Based Traffic Classification for Residential Wireless Networks

    E-Print Network [OSTI]

    Kinicki, Robert E.

    provide no QoS support (e.g., the 5th generation Apple Airport Extreme IEEE 802.11n wireless router [101 Treatment-Based Traffic Classification for Residential Wireless Networks Feng Li, Mark Claypool concurrently over bottlenecked wireless access points (APs). This paper presents Classification and Treatment

  5. Enhancing Fairness in Wireless Multi-Hop Networks (Invited Paper)

    E-Print Network [OSTI]

    Vouyioukas, Demosthenes

    as a router and forwards packets for other nodes. Wireless multi-hop networks have many applicationsEnhancing Fairness in Wireless Multi-Hop Networks (Invited Paper) Dimitrios D. Vergados University, Greece +302273082237 janag@aegean.gr ABSTRACT Wireless multi-hop networks have recently been conceived

  6. Performance evaluation of wireless networks speed depending on the

    E-Print Network [OSTI]

    Sztrik, János

    . At first, a wireless router was connected directly (USB 2.0) to hard disk and the file transfer speeds tested using a modern wireless router for home use. The number of clients was increased for further to the router with USB port. We set up the router smb share. The wireless settings 2.4 GHz band and b / g / n

  7. Sensor Grid: Integration of Wireless Sensor Networks and the Grid

    E-Print Network [OSTI]

    Teo, Yong-Meng

    With the convergence of technologies such as MEMS sensor devices, wireless networking, and low-power em- beddedSensor Grid: Integration of Wireless Sensor Networks and the Grid Hock Beng Lim1 , Yong Meng Teo1 Microsystems, Inc. E-mail: [limhb, teoym]@comp.nus.edu.sg Abstract Wireless sensor networks have emerged

  8. Predictable Messaging in Wireless Automotive CPS Hongwei Zhang

    E-Print Network [OSTI]

    Zhang, Hongwei

    Predictable Messaging in Wireless Automotive CPS Hongwei Zhang Department of Computer Science to predictable, dependable messaging in mission-critical wireless automotive cyber-physical systems (CPS), then we explore research directions for addressing these challenges. 1 Wireless automotive CPS: vision

  9. Wireless mesh networks: a survey Ian F. Akyildiz a

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    and Wireless Networking (BWN) Lab, School of Electrical and Computer Engineering, Georgia InstituteWireless mesh networks: a survey Ian F. Akyildiz a , Xudong Wang b,*, Weilin Wang b a Broadband 1 January 2005 Abstract Wireless mesh networks (WMNs) consist of mesh routers and mesh clients

  10. Continuous Fiber Ceramic Composites (CFCC)

    SciTech Connect (OSTI)

    R. A. Wagner

    2002-12-18

    This report summarizes work to develop CFCC's for various applications in the Industries of the Future (IOF) and power generation areas. Performance requirements range from relatively modest for hot gas filters to severe for turbine combustor liners and infrared burners. The McDermott Technology Inc. (MTI) CFCC program focused on oxide/oxide composite systems because they are known to be stable in the application environments of interest. The work is broadly focused on dense and porous composite systems depending on the specific application. Dense composites were targeted at corrosion resistant components, molten aluminum handling components and gas turbine combustor liners. The development work on dense composites led to significant advances in fiber coatings for oxide fibers and matrix densification. Additionally, a one-step fabrication process was developed to produce low cost composite components. The program also supported key developments in advanced oxide fibers that resulted in an improved version of Nextel 610 fiber (commercially available as Nextel 650) and significant progress in the development of a YAG/alumina fiber. Porous composite development focused on the vacuum winding process used to produce hot gas filters and infrared burner components.

  11. Modeling Time-dependent Responses of Piezoelectric Fiber Composite 

    E-Print Network [OSTI]

    Li, Kuo-An

    2011-02-22

    overall performance of PFCs having unidirectional piezoceramic fibers, such as PZT fibers, dispersed in viscoelastic polymer matrix. Two types of PFCs are studied, which are active fiber composites (AFCs) and macro fiber composites (MFCs). AFCs and MFCs...

  12. IEEE 802.11ah: Advantages in Standards and Further Challenges for Sub 1 GHz Wi-Fi

    E-Print Network [OSTI]

    Langendoen, Koen

    -Fi, smart grid, IoT, M2M. I. INTRODUCTION It is widely accepted that the dominant indoor (wireless) network phones, thus increasing the competition for unlicensed wireless access in the ISM band. Smart grid to highly congested wireless access systems. In addition, the deployment of wireless smart meter devices

  13. Proc. of IEEE Wireless Communications and Networking Conference (WCNC), March 2003 Mobility Patterns in Microcellular Wireless Networks

    E-Print Network [OSTI]

    Peha, Jon M.

    Proc. of IEEE Wireless Communications and Networking Conference (WCNC), March 2003 Mobility Patterns in Microcellular Wireless Networks Suttipong Thajchayapong and Jon M. Peha Department- cellular wireless networks, based on measurements from the 802.11-based system that blankets the Carnegie

  14. 1872 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 11, NO. 5, MAY 2012 Power-Trading in Wireless Communications

    E-Print Network [OSTI]

    Jayaweera, Sudharman K.

    1872 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 11, NO. 5, MAY 2012 Power-Trading the concept of power trading in wireless communications. We present a business model using sealed bid procurement auction based game theory for power-trading in cooperative wireless communication with quality

  15. A Battery-less, Wireless Mote for Scavenging Wireless Power at UHF (470-570 MHz) Frequencies

    E-Print Network [OSTI]

    Tentzeris, Manos

    A Battery-less, Wireless Mote for Scavenging Wireless Power at UHF (470-570 MHz) Frequencies Rushi Vyas*, Vasileios Lakafosis, Dr. Manos Tentzeris School of Electrical and Computer Engineering, Georgia@akg.t.u-tokyo.ac.jp Abstract--In this paper, a novel power scavenging mote to harness wireless power in the UHF frequencies

  16. Commercial Mobile Alerting System (CMAS) CMAS is the system interface to the Wireless Emergency Alerts (WEA) service that wireless carriers

    E-Print Network [OSTI]

    Meyers, Steven D.

    Commercial Mobile Alerting System (CMAS) CMAS is the system interface to the Wireless Emergency Alerts (WEA) service that wireless carriers rolled out across the nation in June 2012. CMAS is a partnership between FEMA, the Federal Communications Commission (FCC), and wireless carriers, to enhance

  17. Fiber networks amplify active stress

    E-Print Network [OSTI]

    Pierre Ronceray; Chase Broedersz; Martin Lenz

    2015-07-22

    Large-scale force generation is essential for biological functions such as cell motility, embryonic development, and muscle contraction. In these processes, forces generated at the molecular level by motor proteins are transmitted by disordered fiber networks, resulting in large-scale active stresses. While these fiber networks are well characterized macroscopically, this stress generation by microscopic active units is not well understood. Here we theoretically study force transmission in these networks, and find that local active forces are rectified towards isotropic contraction and strongly amplified as fibers collectively buckle in the vicinity of the active units. This stress amplification is reinforced by the networks' disordered nature, but saturates for high densities of active units. Our predictions are quantitatively consistent with experiments on reconstituted tissues and actomyosin networks, and shed light on the role of the network microstructure in shaping active stresses in cells and tissue.

  18. Breakthrough: Better Fiber for Better Products

    ScienceCinema (OSTI)

    Griffith, George; Garnier, John;

    2013-05-28

    Researchers at Idaho National Laboratory have developed a cost-effective method for the continuous production of alpha silicon carbide fiber. The exceptionally strong, lightweight fiber could enable significant performance improvements in many everyday products.

  19. Breakthrough: Better Fiber for Better Products

    SciTech Connect (OSTI)

    Griffith, George; Garnier, John;

    2012-01-01

    Researchers at Idaho National Laboratory have developed a cost-effective method for the continuous production of alpha silicon carbide fiber. The exceptionally strong, lightweight fiber could enable significant performance improvements in many everyday products.

  20. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

    1991-01-01

    A compact and portable diffraction grating maker comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate.

  1. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-05-21

    A compact and portable diffraction grating maker is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate. 4 figures.

  2. Development of a FiberDevelopment of a Fiber Continuity and LightContinuity and Light

    E-Print Network [OSTI]

    Minnesota, University of

    Development of a FiberDevelopment of a Fiber Continuity and LightContinuity and Light Calibration of light is collected by a WLS fiber;The flash of light is collected by a WLS fiber; the core contains a dye that shifts the bluethe core contains a dye that shifts the blue light wavelength to green.light

  3. Potential uses of a wireless network in physical security systems.

    SciTech Connect (OSTI)

    Witzke, Edward L.

    2010-07-01

    Many possible applications requiring or benefiting from a wireless network are available for bolstering physical security and awareness at high security installations or facilities. These enhancements are not always straightforward and may require careful analysis, selection, tuning, and implementation of wireless technologies. In this paper, an introduction to wireless networks and the task of enhancing physical security is first given. Next, numerous applications of a wireless network are brought forth. The technical issues that arise when using a wireless network to support these applications are then discussed. Finally, a summary is presented.

  4. Opportunities of Wireless Sensors and Controls for Building Operation

    SciTech Connect (OSTI)

    Kintner-Meyer, Michael CW

    2004-09-30

    This paper characterizes commercially available wireless technologies that are suitable for use in commercial buildings. It describes two demonstration projects of wireless sensors and their integration into existing control networks, and discusses their cost per sensor, their ease of installation, and their reliability. The author will discuss the operational and energy benefits of the wireless sensors and report on the energy and cost savings estimates. The paper will conclude with some practical considerations for the installation of wireless sensors and provide a future outlook for wireless technologies in buildings applications.

  5. Methanosaeta fibers in anaerobic migrating blanket reactors

    E-Print Network [OSTI]

    Angenent, Lars T.

    An anaerobic migrating blanket reactor (AMBR) was seeded with flocculent biomass from a digester and fedMethanosaeta fibers in anaerobic migrating blanket reactors L.T. Angenent,* D. Zheng,* S. Sung in these fibers. Keywords Anaerobic migrating blanket reactor; AMBR; fibers; oligonucleotide hybridization probes

  6. Moisture Penetration Through Optical Fiber Coatings

    E-Print Network [OSTI]

    Matthewson, M. John

    Moisture Penetration Through Optical Fiber Coatings J. L. Armstrong, M. J. Matthewson and C. R Fiber Coatings Janet L. Armstrong, 1 M. John Matthewson, 1 Charles R. Kurkjian 2 1 Rutgers University for measuring the diffusion coefficients of water vapor through optical fiber polymer coatings has been

  7. Assessing Deterioration of ADSS Fiber Optic Cables

    E-Print Network [OSTI]

    Assessing Deterioration of ADSS Fiber Optic Cables Due to Corona Discharge Final Project Report of ADSS Fiber Optic Cables Due to Corona Discharge Final Project Report George G. Karady, Project Leader-Supporting) fiber optic cables installed on high voltage lines. The high electric field on those lines generates

  8. Officials launch Carbon Fiber Technology Facility, announce

    E-Print Network [OSTI]

    Pennycook, Steve

    to reduce carbon fiber's high cost, Danielson noted: "Many of these new clean energy technologies are withinSCIENCE Officials launch Carbon Fiber Technology Facility, announce new manufacturing initiative and a large crowd of local business and civic leaders came to the Carbon Fiber Technology Facility (CFTF

  9. Wireless Demand Response Controls for HVAC Systems

    SciTech Connect (OSTI)

    Federspiel, Clifford

    2009-06-30

    The objectives of this scoping study were to develop and test control software and wireless hardware that could enable closed-loop, zone-temperature-based demand response in buildings that have either pneumatic controls or legacy digital controls that cannot be used as part of a demand response automation system. We designed a SOAP client that is compatible with the Demand Response Automation Server (DRAS) being used by the IOUs in California for their CPP program, design the DR control software, investigated the use of cellular routers for connecting to the DRAS, and tested the wireless DR system with an emulator running a calibrated model of a working building. The results show that the wireless DR system can shed approximately 1.5 Watts per design CFM on the design day in a hot, inland climate in California while keeping temperatures within the limits of ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy.

  10. Industrial Wireless Sensor Standards; A User Perspective

    SciTech Connect (OSTI)

    Sorge, John N [Southern Company Services, Inc.; Taft, Cyrus W. [Taft Engineering, Inc.; Manges, Wayne W [ORNL

    2011-01-01

    Future industrial use of wireless instrumentation will undoubtedly increase dramatically in the coming years. Deployment of such instrumentation in an industrial setting with its security and robustness criteria that are much more stringent than residential performance criteria hinges on user acceptance of verified performance as well as meeting cost requirements. Today, circa 2011, these industrial users are faced with many choices when specifying a wireless sensor network, including radio performance, battery life, interoperability concerns, and standards compliance. With industrial users standing on the precipice to order and deploy (literally) millions of wireless instruments, it is imperative that accurate information for applying the technology to real-world applications be available to the end-user.

  11. Joint Optimal Channel Assignment and Congestion Control for Multi-channel Wireless Mesh Networks

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    wireless routers are equipped with multiple network interface cards (NICs). Each NIC is assigned routers interconnected by wireless links. These wireless routers serve as access points (APs) for wire. Wireless mobile devices first transfer data to the associated wireless router, and these data

  12. Partially Overlapped Channel Assignment for Multi-Channel Wireless Mesh Networks

    E-Print Network [OSTI]

    Wong, Vincent

    -WMN) consists of a number of stationary wireless routers, forming a multi-hop wireless backbone. Each router channel in the IEEE 802.11a/b/g bands. The wireless mesh routers serve as access points for wirelessPartially Overlapped Channel Assignment for Multi-Channel Wireless Mesh Networks A. Hamed Mohsenian

  13. A Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks

    E-Print Network [OSTI]

    . A WMN is a collection of stationary wireless mesh routers and mobile mesh clients. Wireless mesh routers mesh routers via traditional Ethernet or wireless connections. Through multi-hop wireless relay, mobileA Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks Yunxia

  14. A Novel Cross-Layer QoS Routing Algorithm for Wireless Mesh Networks

    E-Print Network [OSTI]

    Leung, Kin K.

    is comprised of wireless mesh routers (WMRs) and wireless access points (APs) (Fig. 1). WMRs form a mesh. The challenge is twofold. First, QoS routing with Wireless Backhaul Mesh Network Wireless Mesh Router CellularA Novel Cross-Layer QoS Routing Algorithm for Wireless Mesh Networks Chi Harold Liu, Kin K. Leung

  15. An Approach to Wireless Communications at Sandia National Laboratories

    SciTech Connect (OSTI)

    WITZKE, EDWARD L.

    2002-10-01

    Wireless communication plays an increasing role in military, industrial, public safety, and academic computer networks. Although in general, radio transmitters are not currently permitted in secured areas at Sandia, wireless communications would open new opportunities, allowing mobile and pervasive user access. Without wireless communications, we must live in a ''non-mainstream'' world of fixed, wired networks, where it becomes ever more difficult to attract and retain the best professionals. This report provides a review of the current state of wireless communications, which direction wireless technology is heading, and where wireless technology could be employed at Sandia. A list of recommendations on harnessing the power of wireless communications is provided to aid in building a state-of-the-art communication environment for the 21st century at Sandia.

  16. ULTRA SECURE HIGH RELIABILITY WIRELESS RADIATION MONITOR

    SciTech Connect (OSTI)

    Cordaro, J.; Shull, D.; Farrar, M.; Reeves, G.

    2011-08-03

    Radiation monitoring in nuclear facilities is essential to safe operation of the equipment as well as protecting personnel. In specific, typical air monitoring of radioactive gases or particulate involves complex systems of valves, pumps, piping and electronics. The challenge is to measure a representative sample in areas that are radioactively contaminated. Running cables and piping to these locations is very expensive due to the containment requirements. Penetration into and out of an airborne or containment area is complex and costly. The process rooms are built with thick rebar-enforced concrete walls with glove box containment chambers inside. Figure 1 shows high temperature radiation resistance cabling entering the top of a typical glove box. In some case, the entire processing area must be contained in a 'hot cell' where the only access into the chamber is via manipulators. An example is shown in Figure 2. A short range wireless network provides an ideal communication link for transmitting the data from the radiation sensor to a 'clean area', or area absent of any radiation fields or radioactive contamination. Radiation monitoring systems that protect personnel and equipment must meet stringent codes and standards due to the consequences of failure. At first glance a wired system would seem more desirable. Concerns with wireless communication include latency, jamming, spoofing, man in the middle attacks, and hacking. The Department of Energy's Savannah River National Laboratory (SRNL) has developed a prototype wireless radiation air monitoring system that address many of the concerns with wireless and allows quick deployment in radiation and contamination areas. It is stand alone and only requires a standard 120 VAC, 60 Hz power source. It is designed to be mounted or portable. The wireless link uses a National Security Agency (NSA) Suite B compliant wireless network from Fortress Technologies that is considered robust enough to be used for classified data transmission in place of NSA Type 1 devices.

  17. Monolithic fiber optic sensor assembly

    DOE Patents [OSTI]

    Sanders, Scott

    2015-02-10

    A remote sensor element for spectrographic measurements employs a monolithic assembly of one or two fiber optics to two optical elements separated by a supporting structure to allow the flow of gases or particulates therebetween. In a preferred embodiment, the sensor element components are fused ceramic to resist high temperatures and failure from large temperature changes.

  18. Scintillating fiber ribbon --- tungsten calorimeter

    SciTech Connect (OSTI)

    Bross, A.; Crisler, M.; Kross, B.; Wrbanek, J.

    1989-07-14

    We describe an ultra-high density scintillating fiber and tungsten calorimeter used as an active beam-dump for electrons. Data showing the calorimeter response to electrons with momenta between 50 and 350 GeV/c are presented. 9 figs.

  19. IEEE Wireless Communications December 200462 1536-1284/04/$20.00 2004 IEEE A wireless network

    E-Print Network [OSTI]

    Guibas, Leonidas J.

    parts of the processor, sensors, and wireless communication circuits are shut down to preserve power-wide emergency: A large-scale hazardous chemical gas leak occurred ten minutes ago near the town of XYZ

  20. A Study of Wireless Computing and a Design for a Wireless System in Bars and Restaurants

    E-Print Network [OSTI]

    Place, Rhett

    2011-05-20

    This paper provides an insight into the use of wireless computing and how it can be used in one specific service industry, restaurants and bars. It answers some of the questions as to how these computer networks are already ...