National Library of Energy BETA

Sample records for bandwidth switch code

  1. Bandwidth Guaranteed Multicast Scheduling for Virtual Output Queued Packet Switches

    E-Print Network [OSTI]

    Pan, Deng

    Bandwidth Guaranteed Multicast Scheduling for Virtual Output Queued Packet Switches Deng Pan Dept in Internet multimedia applications. Although several multicast scheduling schemes for packet switches have output queued (VOQ) switches. We propose the Credit based Multicast Fair scheduling (CMF) algorithm

  2. Ultra-narrow bandwidth voice coding

    DOE Patents [OSTI]

    Holzrichter, John F. (Berkeley, CA); Ng, Lawrence C. (Danville, CA)

    2007-01-09

    A system of removing excess information from a human speech signal and coding the remaining signal information, transmitting the coded signal, and reconstructing the coded signal. The system uses one or more EM wave sensors and one or more acoustic microphones to determine at least one characteristic of the human speech signal.

  3. Network coding for speedup in switches

    E-Print Network [OSTI]

    Kim, MinJi, M. Eng. Massachusetts Institute of Technology

    2007-01-01

    Network coding, which allows mixing of data at intermediate network nodes, is known to increase the throughput of networks. In particular, it is known that linear network coding in a crossbar switch can sustain traffic ...

  4. A High Bandwidth, Bypass, Transient-Mode SigmaDelta DCDC Switching Boost Regulator with Wide LC Compliance

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    compensation circuit. However, sliding-mode boost DC-DC converters designed to tolerate wide LC variations proposes a switching boost converter with a high bandwidth, bypass, path that yields fast transient of boost converters [2] and the resulting instability, the above requirement is more pronounced

  5. Hindi-english, Code Switching and Language Choice in Urban, Uppermiddle-class Indian Families

    E-Print Network [OSTI]

    Malhotra, Sunita

    1980-01-01

    Most bilingual speakers tend to 'code switch' between the languages they speak. The present study deals with code-switching and language choice and the speech of Hindi-English bilinguals residing in North India and the ...

  6. An investigation on English/Chinese Code-switching in BBS in Chinese Alumni's Community 

    E-Print Network [OSTI]

    Ge, Luqun

    The study, based on Myers-Scotton’s revised Markedness Model, investigates English/Chinese code-switching in BBS in Chinese alumni’s community, aiming to prove people are rational calculator when they switch codes. 82 ...

  7. LDPC code-based bandwidth efficient coding schemes for wireless communications 

    E-Print Network [OSTI]

    Sankar, Hari

    2009-06-02

    -diversity tradeoff of MIMO-OFDM and SISO-OFDM systems. We design optimal coding schemes which achieve this tradeoff when transmission is from a constrained constellation. Through simulations, we show that with a sub-optimal iterative decoder, the performance...

  8. Effects of finite gain-bandwidth products on switched capacitor filters 

    E-Print Network [OSTI]

    Marciano, Frederic D.

    1985-01-01

    . Present Status of Research on the Effects of Finite "GB" in Switched Capacitor Filters C. Objectives D. Procedure E. Outline of the Thesis Chapter II Chapter III Chapter IV Chapter V 4 4 6 6 8 8 II GENERAL ANALYSIS 10 A. Terminology... the necessary algorithms. 11 3/We assume a, two phase clock with: 4il high for: (n ? 1)T & t & (n ? 1/2)T, 4i2 high for: (n ? 1/2)T & t & nT. 4/V, ?(t) is constant during clock phases and defined by: V, ?(t) ? V, ?(nT ? T) for: (nT ? T) & t & (nT). 5/In...

  9. Code-switching as a conversational strategy: evidence from Greek students in Edinburgh 

    E-Print Network [OSTI]

    Balamoti, Alexandra

    2010-11-24

    Fundamental questions like ‘why do people code-switch’ and ‘what are the functions of this linguistic phenomenon’ have always preoccupied researchers in the field. The present study aims to give an account for these questions ...

  10. Russian-Estonian Code-Switching Among Young Estonian Russians: Developing a Mixed Linguistic Identity

    E-Print Network [OSTI]

    Zabrodskaja, Anastassia

    2006-01-01

    RUSSIAN-ESTONIAN CODE-SWITCHING AMONG YOUNG ESTONIAN RUSSIANS: DEVELOPING A MIXED LINGUISTIC IDENTITY? Anastassia Zabrodskaja Tallinn University Introduction The study is concerned with conversational functions of Russian-Estonian code...- switching in Kohtla-J?rve, which is a specific region in terms of population structure: Estonians from 20.9 % and Russians 79.1 %. The demographic situation is not homogenous throughout the whole Estonian territory. There are predominantly Russian...

  11. Combined source-channel coding for a power and bandwidth constrained noisy channel 

    E-Print Network [OSTI]

    Raja, Nouman Saeed

    2005-02-17

    that coded MPSK signaling performs 3.1 to 5.2 dB better than uncoded MPSK signaling depending on the constellation size. Finally, an adaptive TCM system is presented for practical implementation of the proposed scheme, which outperforms uncoded MPSK system...

  12. Chinese-English Code-switching in Blogs by Macao Young People 

    E-Print Network [OSTI]

    San, Hong Ka

    2009-11-26

    This paper attempts to investigate Chinese-English code-switching behaviour present in blogs (a kind of computer-mediated communication) belonging to young people in Macao. The first goal of this study is to describe the patterns of Chinese...

  13. In utramque partem tum Graece tum Latine: Code-Switching and Cultured Identity in Cicero's Letters to Atticus

    E-Print Network [OSTI]

    Jackson, Jamie

    2014-05-31

    In this thesis I investigate the linguistic phenomenon of code-switching between Latin and Greek in the letters of Cicero to his friend Atticus. I do this by surveying the individual instances of Greek in the letters to Atticus. I then record...

  14. Is That What I Sound Like When I Speak?: Attitudes Towards Spanish, English, and Code-Switching in Two Texas Border Towns 

    E-Print Network [OSTI]

    Rangel, Natalie

    2013-08-28

    The present study observes and compares the language attitudes towards standard English, standard Spanish, and code-switching in two U.S. and Mexico border cities (Laredo and Edinburg) by employing the matched-guise technique ...

  15. Switch Switch

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With LivermoreSustainable Land Lab TourSwitch Switch Run end at 6pm at

  16. High-index-contrast electromechanical optical switches

    E-Print Network [OSTI]

    Bryant, Reginald (Reginald Eugene), 1978-

    2011-01-01

    System developers are looking to replace protocol-dependent, bandwidth-limited optical networks with intelligent optically-transparent integrated photonic networks. Several electromechanical optical switches are explored ...

  17. Optimal Allocation of Bandwidth for Minimum Battery Consumption

    E-Print Network [OSTI]

    Cosman, Pamela C.

    Optimal Allocation of Bandwidth for Minimum Battery Consumption Qinghua Zhao, Pamela C. Cosman, a power amplifier utilizes battery energy more efficiently with a higher transmission power. For a given of the bandwidth among source coding, channel coding and mod- ulation result in different amounts of battery usage

  18. Chemical Industry Bandwidth Study

    SciTech Connect (OSTI)

    none,

    2006-12-01

    The Chemical Bandwidth Study provides a snapshot of potentially recoverable energy losses during chemical manufacturing. The advantage of this study is the use of "exergy" analysis as a tool for pinpointing inefficiencies.

  19. FIFO Based Multicast Scheduling Algorithm for VOQ Packet Switches

    E-Print Network [OSTI]

    Pan, Deng

    FIFO Based Multicast Scheduling Algorithm for VOQ Packet Switches Deng Pan and Yuanyuan Yang Abstract--Many networking/computing applications require high speed switching for multicast traffic at the switch/router level to save network bandwidth. However, existing queueing based packet switches

  20. Optically Interconnected Data Center Architecture for Bandwidth Intensive Energy Efficient Networking

    E-Print Network [OSTI]

    Bergman, Keren

    Optically Interconnected Data Center Architecture for Bandwidth Intensive Energy Efficient will either be prohibitively costly, overly complex, or result in unsustainable energy requirements. Network of communication-intensive applications. Recent network architectures based on optical circuit switching leverage

  1. Using ultra narrow bandwidth to overcome traditional problems with distribution line carrier

    SciTech Connect (OSTI)

    Hunt, P.C.; Hunt, L.R.

    1995-12-31

    It has long been common knowledge among communication engineers that wide bandwidth signals require more energy to overcome noise than do narrow band signals. This is why, during adverse conditions Morse code radio communications can get through when voice can`t. To achieve similar range: A television transmitter (6000 kHz bandwidth) requires 200,000 watts; A music broadcast transmitter (60 kHz bandwidth) requires 2000 watts; A voice only transmitter (3 kHz bandwidth) requires 100 watts. Carry this principle to extremes: An Ultra Narrow Bandwidth (UNB) transmitter (.00001 kHz bandwidth) requires .003 watts. This paper explores the advantages of using Ultra Narrow Bandwidth (UNB) in power line carrier systems. Using an Automatic Meter Reading System as an example, the authors explore how UNB allows (or sometimes requires) a change in system architecture, which creates further advantages.

  2. FIFO-Based Multicast Scheduling Algorithm for Virtual Output Queued Packet Switches

    E-Print Network [OSTI]

    Pan, Deng

    FIFO-Based Multicast Scheduling Algorithm for Virtual Output Queued Packet Switches Deng Pan/computing applications require high speed switching for multicast traffic at the switch/router level to save network bandwidth. However, existing queuing-based packet switches and scheduling algorithms cannot perform well

  3. On-Chip Josephson Junction Microwave Switch

    E-Print Network [OSTI]

    O. Naaman; M. O. Abutaleb; C. Kirby; M. Rennie

    2015-12-04

    The authors report on the design and measurement of a reflective single-pole single-throw microwave switch with no internal power dissipation, based on a superconducting circuit containing a single Josephson junction. The data demonstrate the switch operation with 2 GHz instantaneous bandwidth centered at 10 GHz, low insertion loss, and better than 20 dB on/off ratio. The switch's measured performance agrees well with simulations for input powers up to -100 dBm. An extension of the demonstrated circuit to implement a single-pole double-throw switch is shown in simulation.

  4. Network Bandwidth Utilization Forecast Model on High Bandwidth Network

    SciTech Connect (OSTI)

    Yoo, Wucherl; Sim, Alex

    2014-07-07

    With the increasing number of geographically distributed scientific collaborations and the scale of the data size growth, it has become more challenging for users to achieve the best possible network performance on a shared network. We have developed a forecast model to predict expected bandwidth utilization for high-bandwidth wide area network. The forecast model can improve the efficiency of resource utilization and scheduling data movements on high-bandwidth network to accommodate ever increasing data volume for large-scale scientific data applications. Univariate model is developed with STL and ARIMA on SNMP path utilization data. Compared with traditional approach such as Box-Jenkins methodology, our forecast model reduces computation time by 83.2percent. It also shows resilience against abrupt network usage change. The accuracy of the forecast model is within the standard deviation of the monitored measurements.

  5. Energy and Bandwidth Efficiency in Wireless

    E-Print Network [OSTI]

    Energy and Bandwidth Efficiency in Wireless Networks Changhun Bae Wayne Stark University, Bandwidth W Data Rate R Source Sink #12;Energy-Bandwidth Efficiency · Shannon showed there is a fundamental tradeoff between energy efficiency and bandwidth efficiency for reliable communications · R: Data rate

  6. Long-pulse-width narrow-bandwidth solid state laser

    DOE Patents [OSTI]

    Dane, C.B.; Hackel, L.A.

    1997-11-18

    A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low threshold stimulated-Brillouin-scattering (SBS) phase conjugator system, and a free-running single frequency Nd:YLF master oscillator. Completely passive polarization switching provides eight amplifier gain passes. Multiple frequency output can be generated by using SBS cells having different pressures of a gaseous SBS medium or different SBS materials. This long pulse, low divergence, narrow-bandwidth, multi-frequency output laser system is ideally suited for use as an illuminator for long range speckle imaging applications. Because of its high average power and high beam quality, this system has application in any process which would benefit from a long pulse format, including material processing and medical applications. 5 figs.

  7. Long-pulse-width narrow-bandwidth solid state laser

    DOE Patents [OSTI]

    Dane, C. Brent (Livermore, CA); Hackel, Lloyd A. (Livermore, CA)

    1997-01-01

    A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low threshold stimulated-Brillouin-scattering (SBS) phase conjugator system, and a free-running single frequency Nd:YLF master oscillator. Completely passive polarization switching provides eight amplifier gain passes. Multiple frequency output can be generated by using SBS cells having different pressures of a gaseous SBS medium or different SBS materials. This long pulse, low divergence, narrow-bandwidth, multi-frequency output laser system is ideally suited for use as an illuminator for long range speckle imaging applications. Because of its high average power and high beam quality, this system has application in any process which would benefit from a long pulse format, including material processing and medical applications.

  8. Traveling-wave photodetectors with high power-bandwidth and gain-bandwidth product performance

    E-Print Network [OSTI]

    2004-01-01

    TRAVELING-WAVE PHOTODETECTORS WITH HIGH POWER–BANDWIDTH ANDTraveling-wave photodetectors for high-power, largeTRAVELING-WAVE PHOTODETECTORS WITH HIGH POWER–BANDWIDTH AND

  9. IP SwitchingIP Switching and Label Switchingand Label Switching

    E-Print Network [OSTI]

    Jain, Raj

    Raj Jain 1 IP SwitchingIP Switching and Label Switchingand Label Switching Raj Jain Professor Switching vs routing q IP Switching (Ipsilon) q Tag Switching (CISCO) q Multi-protocol label switching a tag. Exit router strips it off. H R R R H H HUntagged Packet Tagged packet #12;Raj Jain 9 Tag

  10. Design of switches with reconfiguration latency Valentina Alaria, Andrea Bianco, Paolo Giaccone, Emilio Leonardi, Fabio Neri

    E-Print Network [OSTI]

    Design of switches with reconfiguration latency Valentina Alaria, Andrea Bianco, Paolo Giaccone switching fabrics (OSF) are considered to be appealing solutions for the design of high speed packet switches, due to their excellent scalability in terms of bandwidth and power consumption. Candidate

  11. NERSC HPSS Bandwidth and Transfer Activity

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

    Aggregate Transfer Bandwidth This graph shows the aggregate transfer rate to the storage systems as a function of time of day. The red line is the peak bandwidth observed within...

  12. Cicada: Predictive Guarantees for Cloud Network Bandwidth

    E-Print Network [OSTI]

    LaCurts, Katrina

    2014-03-24

    In cloud-computing systems, network-bandwidth guarantees have been shown to improve predictability of application performance and cost. Most previous work on cloud-bandwidth guarantees has assumed that cloud tenants know ...

  13. Bandwidth Study U.S. Pulp and Paper Manufacturing

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities. This bandwidth study...

  14. ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining...

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

    Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes bandwidth.pdf More Documents & Publications ITP Petroleum...

  15. A New Optical Switching Fabric Architecture Incorporating Rapidly Switching All-Optical Variable Delay Buffers

    E-Print Network [OSTI]

    Kolner, Brian H.

    1 A New Optical Switching Fabric Architecture Incorporating Rapidly Switching All-Optical Variable@ece.ucdavis.edu Abstract: This paper discusses new optical packet switch architectures utilizing all-optical variable delay the simulation performance of the proposed architectures. ? 2004 Optical Society of America OCIS codes: (060

  16. Optical switches and switching methods

    DOE Patents [OSTI]

    Doty, Michael

    2008-03-04

    A device and method for collecting subject responses, particularly during magnetic imaging experiments and testing using a method such as functional MRI. The device comprises a non-metallic input device which is coupled via fiber optic cables to a computer or other data collection device. One or more optical switches transmit the subject's responses. The input device keeps the subject's fingers comfortably aligned with the switches by partially immobilizing the forearm, wrist, and/or hand of the subject. Also a robust nonmetallic switch, particularly for use with the input device and methods for optical switching.

  17. Momentum switches

    E-Print Network [OSTI]

    Andrew M. Childs; David Gosset; Daniel Nagaj; Mouktik Raha; Zak Webb

    2014-06-17

    Certain continuous-time quantum walks can be viewed as scattering processes. These processes can perform quantum computations, but it is challenging to design graphs with desired scattering behavior. In this paper, we study and construct momentum switches, graphs that route particles depending on their momenta. We also give an example where there is no exact momentum switch, although we construct an arbitrarily good approximation.

  18. K.K. Gan Transmission Bandwidth 1 Results on Bandwidth Measurement

    E-Print Network [OSTI]

    Gan, K. K.

    K.K. Gan Transmission Bandwidth 1 Results on Bandwidth Measurement April 16, 2008 K.K, Gan The Ohio State University #12;K.K. Gan Transmission Bandwidth 2 Outline Transmission on micro-cables Transmission on TRT micro-cables Transmission on TRT HV micro-coaxs Summary #12;K.K. Gan Transmission

  19. Energy Bandwidth for Petroleum Refining Processes

    SciTech Connect (OSTI)

    none,

    2006-10-01

    The petroleum refining energy bandwidth report analyzes the most energy-intensive unit operations used in U.S. refineries: crude oil distillation, fluid catalytic cracking, catalytic hydrotreating, catalytic reforming, and alkylation. The "bandwidth" provides a snapshot of the energy losses that can potentially be recovered through best practices and technology R&D.

  20. Pricing Cloud Bandwidth Reservations under Demand Uncertainty

    E-Print Network [OSTI]

    Li, Baochun

    Pricing Cloud Bandwidth Reservations under Demand Uncertainty Di Niu, Chen Feng, Baochun Li's utility depends not only on its bandwidth usage, but more importantly on the portion of its demand that can be made by all tenants and the cloud provider, even with the presence of demand uncertainty

  1. The quantum cryptographic switch

    E-Print Network [OSTI]

    Srinatha Narayanaswamy; Omkar Srikrishna; R. Srikanth; Subhashish Banerjee; Anirban Pathak

    2011-11-21

    We illustrate using a quantum system the principle of a cryptographic switch, in which a third party (Charlie) can control to a continuously varying degree the amount of information the receiver (Bob) receives, after the sender (Alice) has sent her information. Suppose Charlie transmits a Bell state to Alice and Bob. Alice uses dense coding to transmit two bits to Bob. Only if the 2-bit information corresponding to choice of Bell state is made available by Charlie to Bob can the latter recover Alice's information. By varying the information he gives, Charlie can continuously vary the information recovered by Bob. The performance of the protocol subjected to the squeezed generalized amplitude damping channel is considered. We also present a number of practical situations where a cryptographic switch would be of use.

  2. Serially Concatenated Coded Continuous Phase Modulation for Aeronautical Telemetry

    E-Print Network [OSTI]

    Porur Damodaran, Kanagaraj

    2008-08-26

    This thesis treats the development of bandwidth-efficient serially concatenated coded (SCC) continuous phase modulation (CPM) techniques for aeronautical telemetry. The concatenated code consists of an inner and an outer ...

  3. ITP Glass: Industrial Glass Bandwidth Analysis Final Report,...

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

    Industrial Glass Bandwidth Analysis Final Report, August 2007 ITP Glass: Industrial Glass Bandwidth Analysis Final Report, August 2007 industrialbandwidth.pdf More Documents &...

  4. Bandwidth Study U.S. Petroleum Refining | Department of Energy

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

    (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. petroleum refining....

  5. Bandwidth Study U.S. Iron and Steel Manufacturing | Department...

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

    (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. iron and steel...

  6. Bandwidth Study on Energy Use and Potential Energy Saving Opportunitie...

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

    Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Chemical Manufacturing i , ii Bandwidth Study on Energy Use and Potential Energy Saving...

  7. Ultra-wide bandwidth piezoelectric energy harvesting

    E-Print Network [OSTI]

    Hajati, Arman

    Here, we present an ultra wide-bandwidth energy harvester by exploiting the nonlinear stiffness of a doubly clamped microelectromechanical systems (MEMSs) resonator. The stretching strain in a doubly clamped beam shows a ...

  8. Ultra wide-bandwidth micro energy harvester

    E-Print Network [OSTI]

    Hajati, Arman

    2011-01-01

    An ultra wide-bandwidth resonating thin film PZT MEMS energy harvester has been designed, modeled, fabricated and tested. It harvests energy from parasitic ambient vibration at a wide range of amplitude and frequency via ...

  9. Consuming Network Bandwidth with Visapult Wes Bethel and John Shalf, Lawrence Berkeley National Laboratory

    E-Print Network [OSTI]

    bandwidth during the SC02 Bandwidth Challenge over transcontinental network links. Visapult's performance

  10. Speech coding

    SciTech Connect (OSTI)

    Ravishankar, C., Hughes Network Systems, Germantown, MD

    1998-05-08

    Speech is the predominant means of communication between human beings and since the invention of the telephone by Alexander Graham Bell in 1876, speech services have remained to be the core service in almost all telecommunication systems. Original analog methods of telephony had the disadvantage of speech signal getting corrupted by noise, cross-talk and distortion Long haul transmissions which use repeaters to compensate for the loss in signal strength on transmission links also increase the associated noise and distortion. On the other hand digital transmission is relatively immune to noise, cross-talk and distortion primarily because of the capability to faithfully regenerate digital signal at each repeater purely based on a binary decision. Hence end-to-end performance of the digital link essentially becomes independent of the length and operating frequency bands of the link Hence from a transmission point of view digital transmission has been the preferred approach due to its higher immunity to noise. The need to carry digital speech became extremely important from a service provision point of view as well. Modem requirements have introduced the need for robust, flexible and secure services that can carry a multitude of signal types (such as voice, data and video) without a fundamental change in infrastructure. Such a requirement could not have been easily met without the advent of digital transmission systems, thereby requiring speech to be coded digitally. The term Speech Coding is often referred to techniques that represent or code speech signals either directly as a waveform or as a set of parameters by analyzing the speech signal. In either case, the codes are transmitted to the distant end where speech is reconstructed or synthesized using the received set of codes. A more generic term that is applicable to these techniques that is often interchangeably used with speech coding is the term voice coding. This term is more generic in the sense that the coding techniques are equally applicable to any voice signal whether or not it carries any intelligible information, as the term speech implies. Other terms that are commonly used are speech compression and voice compression since the fundamental idea behind speech coding is to reduce (compress) the transmission rate (or equivalently the bandwidth) And/or reduce storage requirements In this document the terms speech and voice shall be used interchangeably.

  11. Cancer: A suppression switch

    E-Print Network [OSTI]

    Starobinets, H; Debnath, J

    2013-01-01

    Cancer A suppression switch The status of the protein p53it seems that p53 acts as a switch in pancreatic cancer thatthe ability of p53 to switch the clinical outcome of

  12. Confocal coded aperture imaging

    DOE Patents [OSTI]

    Tobin, Jr., Kenneth William (Harriman, TN); Thomas, Jr., Clarence E. (Knoxville, TN)

    2001-01-01

    A method for imaging a target volume comprises the steps of: radiating a small bandwidth of energy toward the target volume; focusing the small bandwidth of energy into a beam; moving the target volume through a plurality of positions within the focused beam; collecting a beam of energy scattered from the target volume with a non-diffractive confocal coded aperture; generating a shadow image of said aperture from every point source of radiation in the target volume; and, reconstructing the shadow image into a 3-dimensional image of the every point source by mathematically correlating the shadow image with a digital or analog version of the coded aperture. The method can comprise the step of collecting the beam of energy scattered from the target volume with a Fresnel zone plate.

  13. Latching relay switch assembly

    DOE Patents [OSTI]

    Duimstra, Frederick A. (Anaheim Hills, CA)

    1991-01-01

    A latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes at least one permanent magnet and at least one electromagnet. The respective sections are, generally, arranged in separate locations or cavities in the assembly. The switch is latched by a permanent magnet assembly and selectively switched by an overriding electromagnetic assembly.

  14. Radiation hard vacuum switch

    DOE Patents [OSTI]

    Boettcher, Gordon E. (Albuquerque, NM)

    1990-01-01

    A vacuum switch with an isolated trigger probe which is not directly connected to the switching electrodes. The vacuum switch within the plasmatron is triggered by plasma expansion initiated by the trigger probe which travels through an opening to reach the vacuum switch elements. The plasma arc created is directed by the opening to the space between the anode and cathode of the vacuum switch to cause conduction.

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

    E-Print Network [OSTI]

    Huang, Changcheng

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

  16. Bandwidth Study U.S. Pulp and Paper Manufacturing | Department...

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

    Pulp and Paper Manufacturing Bandwidth Study U.S. Pulp and Paper Manufacturing Pulp-Paper.jpg Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational...

  17. Diameter-bandwidth product limitation of isolated-object cloaking

    E-Print Network [OSTI]

    Joannopoulos, John D.

    We show that cloaking of isolated objects using transformation-based cloaks is subject to a diameter-bandwidth product limitation: as the size of the object increases, the bandwidth of good (small-cross-section) cloaking ...

  18. High Bandwidth Differential Amplifier for Shock Experiments

    SciTech Connect (OSTI)

    Ross, P. W., Tran, V., Chau, R.

    2012-04-30

    We developed a high bandwidth differential amplifier for gas gun shock experiments/applications. The circuit has a bandwidth > 1 GHz, and is capable of measuring signals of ?1.5 V with a common mode rejection of 250 V. Conductivity measurements of gas gun targets are measured by flowing high currents through the targets. The voltage is measured across the target using a technique similar to a four-point probe. Because of the design of the current source and load, the target voltage is approximately 250 V relative to ground. Since the expected voltage change in the target is < 1 V, the differential amplifier must have a large common mode rejection. High pass filters suppress internal ringing of operational amplifiers. Results of bench tests are shown.

  19. Optimal Resource Allocation in a Bandwidth Exchange Enabled Relay Network

    E-Print Network [OSTI]

    Mandayam, Narayan

    where trans- mission bandwidth is used as a flexible resource. We focus on a network where two nodes on direct path transmission and then use their individual bandwidths as flexible incentives for two hop of the proposed mechanism with optimal bandwidth and power allocation based direct transmission. We use sum rate

  20. Stateless Proportional Bandwidth Allocation Prasanna K. Jagannathan*a

    E-Print Network [OSTI]

    Jain, Raj

    Stateless Proportional Bandwidth Allocation Prasanna K. Jagannathan*a , Arjan Durresi*a , Raj Jain This paper proposes a new method of bandwidth allocation during congestion, called the proportional information rates, based on their origin. In proportional allocation of bandwidth, during congestion all flows

  1. Latching micro optical switch

    DOE Patents [OSTI]

    Garcia, Ernest J; Polosky, Marc A

    2013-05-21

    An optical switch reliably maintains its on or off state even when subjected to environments where the switch is bumped or otherwise moved. In addition, the optical switch maintains its on or off state indefinitely without requiring external power. External power is used only to transition the switch from one state to the other. The optical switch is configured with a fixed optical fiber and a movable optical fiber. The movable optical fiber is guided by various actuators in conjunction with a latching mechanism that configure the switch in one position that corresponds to the on state and in another position that corresponds to the off state.

  2. Optically Controlled 22 Switching Cell for Packet-Switched Networks

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Optically Controlled 2×2 Switching Cell for Packet-Switched Networks C. C. Lee1 , L. F. K. Lui1 a 10 Gb/s optically controlled 2×2 switching cell which can be used to construct N×N all-optical switches for all-optical packet-switched networks. All-optical packet-switching is performed based

  3. Remote switch actuator

    DOE Patents [OSTI]

    Haas, Edwin Gerard; Beauman, Ronald; Palo, Jr., Stefan

    2013-01-29

    The invention provides a device and method for actuating electrical switches remotely. The device is removably attached to the switch and is actuated through the transfer of a user's force. The user is able to remain physically removed from the switch site obviating need for protective equipment. The device and method allow rapid, safe actuation of high-voltage or high-current carrying electrical switches or circuit breakers.

  4. Triggered plasma opening switch

    DOE Patents [OSTI]

    Mendel, Clifford W. (Albuquerque, NM)

    1988-01-01

    A triggerable opening switch for a very high voltage and current pulse includes a transmission line extending from a source to a load and having an intermediate switch section including a plasma for conducting electrons between transmission line conductors and a magnetic field for breaking the plasma conduction path and magnetically insulating the electrons when it is desired to open the switch.

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

    E-Print Network [OSTI]

    Bergman, Keren

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

  6. Tunable pulsed narrow bandwidth light source

    DOE Patents [OSTI]

    Powers, Peter E. (Dayton, OH); Kulp, Thomas J. (Livermore, CA)

    2002-01-01

    A tunable pulsed narrow bandwidth light source and a method of operating a light source are provided. The light source includes a pump laser, first and second non-linear optical crystals, a tunable filter, and light pulse directing optics. The method includes the steps of operating the pump laser to generate a pulsed pump beam characterized by a nanosecond pulse duration and arranging the light pulse directing optics so as to (i) split the pulsed pump beam into primary and secondary pump beams; (ii) direct the primary pump beam through an input face of the first non-linear optical crystal such that a primary output beam exits from an output face of the first non-linear optical crystal; (iii) direct the primary output beam through the tunable filter to generate a sculpted seed beam; and direct the sculpted seed beam and the secondary pump beam through an input face of the second non-linear optical crystal such that a secondary output beam characterized by at least one spectral bandwidth on the order of about 0.1 cm.sup.-1 and below exits from an output face of the second non-linear optical crystal.

  7. Optical flow switching

    E-Print Network [OSTI]

    Chan, Vincent W. S.

    Present-day networks are being challenged by dramatic increases in bandwidth demand of emerging applications. We will explore a new transport, ldquooptical flow switchingrdquo, that will enable significant growth and ...

  8. Compact antenna arrays with wide bandwidth and low sidelobe levels

    DOE Patents [OSTI]

    Strassner, II, Bernd H.

    2014-09-09

    Highly efficient, low cost, easily manufactured SAR antenna arrays with lightweight low profiles, large instantaneous bandwidths and low SLL are disclosed. The array topology provides all necessary circuitry within the available antenna aperture space and between the layers of material that comprise the aperture. Bandwidths of 15.2 GHz to 18.2 GHz, with 30 dB SLLs azimuthally and elevationally, and radiation efficiencies above 40% may be achieved. Operation over much larger bandwidths is possible as well.

  9. Costs and Benefits of Flexibility in Spatial Division Circuit Switched Networks-on-Chip

    E-Print Network [OSTI]

    Jantsch, Axel

    Costs and Benefits of Flexibility in Spatial Division Circuit Switched Networks-on-Chip Ahsen Ejaz of flexibility based on SDM, on the performance of a CS networks. A network evaluation platform has been random bandwidth (BW) requirement, a less flexible network outperforms a network with higher flexibility

  10. Increase of the grating coupler bandwidth with a graphene overlay

    SciTech Connect (OSTI)

    Cheng, Zhenzhou; Li, Zhen; Xu, Ke; Tsang, Hon Ki, E-mail: hktsang@ee.cuhk.edu.hk [Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin (Hong Kong)

    2014-03-17

    We present theoretical and experimental results that demonstrate an increase in the grating bandwidth by placing a graphene on the chip. A focusing subwavelength grating with coupling efficiency of ?4.3?dB and 1?dB bandwidth of ?60?nm was demonstrated. After a graphene sheet was transferred onto the chip, the maximum 1?dB bandwidth was increased to ?72?nm. Experimental results are consistent with the calculated graphene induced waveguide refractive index and dispersion changes, and the bandwidth improvement may be attributed to the reduction of grating dispersion. This study may be of interest for graphene-on-silicon photonic integrated circuit applications.

  11. ITP Chemicals: Chemical Bandwidth Study - Energy Analysis: A...

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

    Chemical Bandwidth Study - Energy Analysis: A Powerful Tool for Identifying Process Inefficiencies in the U.S. Chemical Industry, Industrial Technologies Program, DRAFT Summary...

  12. Effective switching frequency multiplier inverter

    DOE Patents [OSTI]

    Su, Gui-Jia (Oak Ridge, TN); Peng, Fang Z. (Okemos, MI)

    2007-08-07

    A switching frequency multiplier inverter for low inductance machines that uses parallel connection of switches and each switch is independently controlled according to a pulse width modulation scheme. The effective switching frequency is multiplied by the number of switches connected in parallel while each individual switch operates within its limit of switching frequency. This technique can also be used for other power converters such as DC/DC, AC/DC converters.

  13. Tactile Switch (SMD) B3FS1138 Tactile Switch (SMD)

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    Tactile Switch (SMD) B3FS1138 Tactile Switch (SMD) B3FS Surface-mounting Switches Ideal for High mechanism that ensures sharp switching operations D 3 actuator heights for design flexibility D Ro,000 pieces. For the packing style, refer to Key Switch Packing under Precautions section. Important Note

  14. Coding theory basics Toric codes

    E-Print Network [OSTI]

    Little, John B.

    Coding theory basics Toric codes Tools from the toric world Higher-dimensional polytopes. Little Toric Varieties in Coding Theory #12;Coding theory basics Toric codes Tools from the toric world(!) John B. Little Toric Varieties in Coding Theory #12;Coding theory basics Toric codes Tools from

  15. Thermally actuated thermionic switch

    DOE Patents [OSTI]

    Barrus, D.M.; Shires, C.D.

    1982-09-30

    A thermally actuated thermionic switch which responds to an increase of temperature by changing from a high impedance to a low impedance at a predictable temperature set point. The switch has a bistable operation mode switching only on temperature increases. The thermionic material may be a metal which is liquid at the desired operation temperature and held in matrix in a graphite block reservoir, and which changes state (ionizes, for example) so as to be electrically conductive at a desired temperature.

  16. Routing Bandwidth Guaranteed Paths with Local Restoration in Label Switched Networks

    E-Print Network [OSTI]

    Li, Li Erran

    information. We first show that joint optimization of primary and backup paths is NP-hard in all cases. We along the primary path, the source node detects path failure and activates the backup path or nodes along primary path fail. In this paper, we address the problem of distributed routing

  17. Reusable fast opening switch

    DOE Patents [OSTI]

    Van Devender, John P. (Albuquerque, NM); Emin, David (Albuquerque, NM)

    1986-01-01

    A reusable fast opening switch for transferring energy, in the form of a high power pulse, from an electromagnetic storage device such as an inductor into a load. The switch is efficient, compact, fast and reusable. The switch comprises a ferromagnetic semiconductor which undergoes a fast transition between conductive and insulating states at a critical temperature and which undergoes the transition without a phase change in its crystal structure. A semiconductor such as europium rich europhous oxide, which undergoes a conductor to insulator transition when it is joule heated from its conductor state, can be used to form the switch.

  18. Reusable fast opening switch

    DOE Patents [OSTI]

    Van Devender, J.P.; Emin, D.

    1983-12-21

    A reusable fast opening switch for transferring energy, in the form of a high power pulse, from an electromagnetic storage device such as an inductor into a load. The switch is efficient, compact, fast and reusable. The switch comprises a ferromagnetic semiconductor which undergoes a fast transition between conductive and metallic states at a critical temperature and which undergoes the transition without a phase change in its crystal structure. A semiconductor such as europium rich europhous oxide, which undergoes a conductor to insulator transition when it is joule heated from its conductor state, can be used to form the switch.

  19. Bandwidth on Demand for Inter-Data Center Communication

    E-Print Network [OSTI]

    Greenberg, Albert

    Bandwidth on Demand for Inter-Data Center Communication Ajay Mahimkar, Angela Chiu, Robert replication often involves the transfer of huge data sets over the wide area network and demands high backbone. The proposed GRIPhoN architec- ture is an extension of earlier work [34] and can provide a bandwidth-on-demand

  20. Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks

    E-Print Network [OSTI]

    Fisher, Kathleen

    Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks Zhe Wang, Vaneet@research.att.com Abstract--We develop optimal energy-bandwidth allocation algorithm for the energy harvesting transmitters in interference networks. We assume that both the channel gain and the harvested energy are known for K slots

  1. Switching Graphs Jan Friso Groote

    E-Print Network [OSTI]

    Groote, Jan Friso

    Switching Graphs Jan Friso Groote J.F.Groote@tue.nl Bas Ploeger S.C.W.Ploeger@tue.nl Department The Netherlands Abstract Switching graphs are graphs containing switches. By using boolean functions called switch settings, these switches can be put in a fixed direction to obtain an ordinary graph. For many problems

  2. Organometallic Spintronics: Dicobaltocene Switch

    E-Print Network [OSTI]

    Baranger, Harold U.

    Organometallic Spintronics: Dicobaltocene Switch Rui Liu, San-Huang Ke,, Harold U. Baranger Received August 16, 2005 ABSTRACT A single-molecule spintronic switch and spin valve using two cobaltocene phenomena that have come to light in the two fields of spintronics and single-molecule transport suggest

  3. Reflective HTS switch

    DOE Patents [OSTI]

    Martens, J.S.; Hietala, V.M.; Hohenwarter, G.K.G.

    1994-09-27

    A HTS (High Temperature Superconductor) switch includes a HTS conductor for providing a superconducting path for an electrical signal and an serpentine wire actuator for controllably heating a portion of the conductor sufficiently to cause that portion to have normal, and not superconducting, resistivity. Mass of the portion is reduced to decrease switching time. 6 figs.

  4. Single Atom Plasmonic Switch

    E-Print Network [OSTI]

    Emboras, Alexandros; Ma, Ping; Haffner, Christian; Luisier, Mathieu; Hafner, Christian; Schimmel, Thomas; Leuthold, Juerg

    2015-01-01

    The atom sets an ultimate scaling limit to Moores law in the electronics industry. And while electronics research already explores atomic scales devices, photonics research still deals with devices at the micrometer scale. Here we demonstrate that photonic scaling-similar to electronics-is only limited by the atom. More precisely, we introduce an electrically controlled single atom plasmonic switch. The switch allows for fast and reproducible switching by means of the relocation of an individual or at most - a few atoms in a plasmonic cavity. Depending on the location of the atom either of two distinct plasmonic cavity resonance states are supported. Experimental results show reversible digital optical switching with an extinction ration of 10 dB and operation at room temperature with femtojoule (fJ) power consumption for a single switch operation. This demonstration of a CMOS compatible, integrated quantum device allowing to control photons at the single-atom level opens intriguing perspectives for a fully i...

  5. Erected mirror optical switch

    DOE Patents [OSTI]

    Allen, James J.

    2005-06-07

    A microelectromechanical (MEM) optical switching apparatus is disclosed that is based on an erectable mirror which is formed on a rotatable stage using surface micromachining. An electrostatic actuator is also formed on the substrate to rotate the stage and mirror with a high angular precision. The mirror can be erected manually after fabrication of the device and used to redirect an incident light beam at an arbitrary angel and to maintain this state in the absence of any applied electrical power. A 1.times.N optical switch can be formed using a single rotatable mirror. In some embodiments of the present invention, a plurality of rotatable mirrors can be configured so that the stages and mirrors rotate in unison when driven by a single micromotor thereby forming a 2.times.2 optical switch which can be used to switch a pair of incident light beams, or as a building block to form a higher-order optical switch.

  6. Resistive switching Resistive Switching in Nanogap Systems on

    E-Print Network [OSTI]

    Zhong, Lin

    Resistive switching Resistive Switching in Nanogap Systems on SiO2 Substrates Jun Yao, Lin Zhong-controlled resistive switching in various gap systems on SiO2 substrates is reported. The nanoscale-sized gaps are made. The switching site is further reduced in size by using multiwalled carbon nanotubes and single-walled carbon

  7. Design of Wavelength Converting Switches for Optical Burst Switching

    E-Print Network [OSTI]

    Design of Wavelength Converting Switches for Optical Burst Switching Jeyashankher Ramamirtham, Jonathan Turner Abstract-- Optical Burst Switching (OBS) is an experi- mental network technology. In this paper, we study two designs for wavelength converting switches that are suitable for use in optical

  8. Integrated photonic switches for nanosecond packet-switched

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Integrated photonic switches for nanosecond packet-switched optical wavelength conversion Onur ofidaner@stanford.edu Abstract: We present a multifunctional photonic switch that monolithically integrates-chip, InP optoelectronic circuit. The optical multifunctionality of the switch offers many configurations

  9. Solid state switch

    DOE Patents [OSTI]

    Merritt, B.T.; Dreifuerst, G.R.

    1994-07-19

    A solid state switch, with reverse conducting thyristors, is designed to operate at 20 kV hold-off voltage, 1,500 A peak, 1.0 [mu]s pulsewidth, and 4,500 pps, to replace thyratrons. The solid state switch is more reliable, more economical, and more easily repaired. The switch includes a stack of circuit card assemblies, a magnetic assist and a trigger chassis. Each circuit card assembly contains a reverse conducting thyristor, a resistor capacitor network, and triggering circuitry. 6 figs.

  10. Energy Secretary Moniz Honors ESnet's OSCARS Bandwidth Reservation...

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

    (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Energy Secretary Moniz Honors ESnet's OSCARS Bandwidth...

  11. Bandwidth Study on Energy Use and Potential Energy Saving Opportunitie...

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

    Pulp and Paper Manufacturing i , ii Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Pulp and Paper Manufacturing THE U.S. DEPARTMENT OF ENERGY...

  12. Ranging with ultrawide bandwidth signals in multipath environments

    E-Print Network [OSTI]

    Dardari, Davide

    Over the coming decades, high-definition situationally-aware networks have the potential to create revolutionary applications in the social, scientific, commercial, and military sectors. Ultrawide bandwidth (UWB) technology ...

  13. An Improved Evaluation Function for the Bandwidth Minimization Problem?

    E-Print Network [OSTI]

    Hao, Jin-Kao

    within a Simulated Annealing algorithm. Experiments show that thanks to the use of the function, we Evaluation Function, Bandwidth Minimization Problem, Heuristics, Simulated Annealing. 1 Introduction engineers first analyzed steel frameworks by com- puter manipulation of their structural matrices [1

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

    E-Print Network [OSTI]

    Patel, Chirag D.; Patel, Chirag D.

    2012-01-01

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

  15. BATMAN: Maximizing Bandwidth Utilization of Hybrid Memory Systems

    E-Print Network [OSTI]

    Qureshi, Moinuddin K.

    ) compared to commodity DRAM (i.e. DDR3, and DDR4 [4, 5]). Therefore, they are un- able to completely replace-Memory System or a Tiered-Memory System. 0 20 40 60 80 25 50 75 100 125 150 175 Latency(ns) Bandwidth (GB/s) DDR4(2014) HBM(2014) HMC(2014) HBM HMC DDR3 DDR4 DDR3(2013) Fig. 1. Latency and bandwidth

  16. An optical switch

    DOE Patents [OSTI]

    Christophorou, L.G.; Hunter, S.R.

    1987-04-30

    The invention is a gas mixture for a diffuse discharge switch having an electron attaching gas wherein electron attachment is brought about by indirect excitation of molecules to long live states by exposure to laser light. 3 figs.

  17. SWITCH Model AND Data Description: 2050 Timeframe................................................ 2 SWITCH Model Description ........................................................................................................2

    E-Print Network [OSTI]

    Kammen, Daniel M.

    1 SWITCH Model AND Data Description: 2050 Timeframe................................................ 2 SWITCH Model Description.................................................................................................................................41 #12;2 SWITCH MODEL AND DATA DESCRIPTION: 2050 TIMEFRAME December 2011 SWITCH was created

  18. A radiation hard vacuum switch

    DOE Patents [OSTI]

    Boettcher, G.E.

    1988-07-19

    A vacuum switch with an isolated trigger probe which is not directly connected to the switching electrodes. The vacuum switch within the plasmatron is triggered by plasma expansion initiated by the trigger probe which travels through an opening to reach the vacuum switch elements. The plasma arc created is directed by the opening to the space between the anode and cathode of the vacuum switch to cause conduction. 3 figs.

  19. Thermionic gas switch

    DOE Patents [OSTI]

    Hatch, G.L.; Brummond, W.A.; Barrus, D.M.

    1984-04-05

    The present invention is directed to an improved temperature responsive thermionic gas switch utilizing a hollow cathode and a folded emitter surface area. The folded emitter surface area of the thermionic switch substantially increases the on/off ratio by changing the conduction surface area involved in the two modes thereof. The improved switch of this invention provides an on/off ratio of 450:1 compared to the 10:1 ratio of the prior known thermionic switch, while providing for adjusting the on current. In the improved switch of this invention the conduction area is made small in the off mode, while in the on mode the conduction area is made large. This is achieved by utilizing a folded hollow cathode configuration and utilizing a folded emitter surface area, and by making the dimensions of the folds small enough so that a space charge will develop in the convolutions of the folds and suppress unignited current, thus limiting the current carrying surface in the off mode.

  20. Switching power pulse system

    DOE Patents [OSTI]

    Aaland, K.

    1983-08-09

    A switching system for delivering pulses of power from a source to a load using a storage capacitor charged through a rectifier, and maintained charged to a reference voltage level by a transistor switch and voltage comparator. A thyristor is triggered to discharge the storage capacitor through a saturable reactor and fractional turn saturable transformer having a secondary to primary turn ratio N of n:l/n = n[sup 2]. The saturable reactor functions as a soaker'' while the thyristor reaches saturation, and then switches to a low impedance state. The saturable transformer functions as a switching transformer with high impedance while a load coupling capacitor charges, and then switches to a low impedance state to dump the charge of the storage capacitor into the load through the coupling capacitor. The transformer is comprised of a multilayer core having two secondary windings tightly wound and connected in parallel to add their output voltage and reduce output inductance, and a number of single turn windings connected in parallel at nodes for the primary winding, each single turn winding linking a different one of the layers of the multilayer core. The load may be comprised of a resistive beampipe for a linear particle accelerator and capacitance of a pulse forming network. To hold off discharge of the capacitance until it is fully charged, a saturable core is provided around the resistive beampipe to isolate the beampipe from the capacitance until it is fully charged. 5 figs.

  1. No-Switching Quantum Key Distribution using Broadband Modulated Coherent Light

    E-Print Network [OSTI]

    Andrew M. Lance; Thomas Symul; Vikram Sharma; Christian Weedbrook; Timothy C. Ralph; Ping Koy Lam

    2005-10-28

    We realize an end-to-end no-switching quantum key distribution protocol using continuous-wave coherent light. We encode weak broadband Gaussian modulations onto the amplitude and phase quadratures of light beams at the Shannon's information limit. Our no-switching protocol achieves high secret key rate via a post-selection protocol that utilizes both quadrature information simultaneously. We establish a secret key rate of 25 Mbits/s for a lossless channel and 1 kbit/s, per 17 MHz of detected bandwidth, for 90% channel loss. Since our scheme is truly broadband, it can potentially deliver orders of magnitude higher key rates by extending the encoding bandwidth with higher-end telecommunication technology.

  2. Microfabricated triggered vacuum switch

    DOE Patents [OSTI]

    Roesler, Alexander W. (Tijeras, NM); Schare, Joshua M. (Albuquerque, NM); Bunch, Kyle (Albuquerque, NM)

    2010-05-11

    A microfabricated vacuum switch is disclosed which includes a substrate upon which an anode, cathode and trigger electrode are located. A cover is sealed over the substrate under vacuum to complete the vacuum switch. In some embodiments of the present invention, a metal cover can be used in place of the trigger electrode on the substrate. Materials used for the vacuum switch are compatible with high vacuum, relatively high temperature processing. These materials include molybdenum, niobium, copper, tungsten, aluminum and alloys thereof for the anode and cathode. Carbon in the form of graphitic carbon, a diamond-like material, or carbon nanotubes can be used in the trigger electrode. Channels can be optionally formed in the substrate to mitigate against surface breakdown.

  3. Switching power supply

    DOE Patents [OSTI]

    Mihalka, A.M.

    1984-06-05

    The invention is a repratable capacitor charging, switching power supply. A ferrite transformer steps up a dc input. The transformer primary is in a full bridge configuration utilizing power MOSFETs as the bridge switches. The transformer secondary is fed into a high voltage, full wave rectifier whose output is connected directly to the energy storage capacitor. The transformer is designed to provide adequate leakage inductance to limit capacitor current. The MOSFETs are switched to the variable frequency from 20 to 50 kHz to charge a capacitor from 0.6 kV. The peak current in a transformer primary and secondary is controlled by increasing the pulse width as the capacitor charges. A digital ripple counter counts pulses and after a preselected desired number is reached an up-counter is clocked.

  4. Correlation and image compression for limited-bandwidth CCD.

    SciTech Connect (OSTI)

    Thompson, Douglas G.

    2005-07-01

    As radars move to Unmanned Aerial Vehicles with limited-bandwidth data downlinks, the amount of data stored and transmitted with each image becomes more significant. This document gives the results of a study to determine the effect of lossy compression in the image magnitude and phase on Coherent Change Detection (CCD). We examine 44 lossy compression types, plus lossless zlib compression, and test each compression method with over 600 CCD image pairs. We also derive theoretical predictions for the correlation for most of these compression schemes, which compare favorably with the experimental results. We recommend image transmission formats for limited-bandwidth programs having various requirements for CCD, including programs which cannot allow performance degradation and those which have stricter bandwidth requirements at the expense of CCD performance.

  5. Transparent electrode for optical switch

    DOE Patents [OSTI]

    Goldhar, J.; Henesian, M.A.

    1984-10-19

    The invention relates generally to optical switches and techniques for applying a voltage to an electro-optical crystal, and more particularly, to transparent electodes for an optical switch. System architectures for very large inertial confinement fusion (ICF) lasers require active optical elements with apertures on the order of one meter. Large aperture optical switches are needed for isolation of stages, switch-out from regenerative amplifier cavities and protection from target retroreflections.

  6. Audio Switch SpeakersAvotec

    E-Print Network [OSTI]

    Walker, Matthew P.

    Control Monitor Keyboard & Mouse Audio Switch Control SpeakersAvotec USB HUB USB HUB USB CAT5FORP Avotec Projector Video Switch VGA RCA RCA 3T Audio and Visual Stimulus Setup DVD Drive K&MSiemens RCA.via CAT5 split at operator room Video Switch Projector Monitor VGA DVD Drive E-Prime Dongle Control

  7. Switching power pulse system

    DOE Patents [OSTI]

    Aaland, Kristian (Livermore, CA)

    1983-01-01

    A switching system for delivering pulses of power from a source (10) to a load (20) using a storage capacitor (C3) charged through a rectifier (D1, D2), and maintained charged to a reference voltage level by a transistor switch (Q1) and voltage comparator (12). A thyristor (22) is triggered to discharge the storage capacitor through a saturable reactor (18) and fractional turn saturable transformer (16) having a secondary to primary turn ratio N of n:l/n=n.sup.2. The saturable reactor (18) functions as a "soaker" while the thyristor reaches saturation, and then switches to a low impedance state. The saturable transformer functions as a switching transformer with high impedance while a load coupling capacitor (C4) charges, and then switches to a low impedance state to dump the charge of the storage capacitor (C3) into the load through the coupling capacitor (C4). The transformer is comprised of a multilayer core (26) having two secondary windings (28, 30) tightly wound and connected in parallel to add their output voltage and reduce output inductance, and a number of single turn windings connected in parallel at nodes (32, 34) for the primary winding, each single turn winding linking a different one of the layers of the multilayer core. The load may be comprised of a resistive beampipe (40) for a linear particle accelerator and capacitance of a pulse forming network (42). To hold off discharge of the capacitance until it is fully charged, a saturable core (44) is provided around the resistive beampipe (40) to isolate the beampipe from the capacitance (42) until it is fully charged.

  8. The Usefulness of Bi-Level Switching; Original Technical Note: November 1998. Revised August, 1999

    SciTech Connect (OSTI)

    Building Technologies Department

    1998-11-01

    California's Title 24 Energy Efficiency Building Standard requires multiple lighting level control in all individual offices. Usually, this requirement is fulfilled using bi-level switching. With bi-level switching, each office occupant is provided with two wall switches near the doorway to control their lights. In a typical installation, one switch would control 1/3 of the fluorescent lamps in the ceiling lighting system, while the other switch would control the remaining 2/3 of the lamps. This allows four possible light levels: OFF, 1/3, 2/3 and FULL lighting. Because it has been required by building code since 1983, bi-level switching is common in California office buildings. However, there is no published evidence showing that occupants sometimes use just one switch rather than just switching on both switches when entering the room. Consequently, some have questioned whether bi-level switching is a necessary or desirable requirement for typical office buildings. In fact, the draft national standard, ASHRAE Standard 90.1-1989K apparently does not require bi-level switching at all.

  9. Harmonic Broadcasting Is Bandwidth-Optimal Assuming Constant Bit Rate

    E-Print Network [OSTI]

    Sudan, Madhu

    Harmonic Broadcasting Is Bandwidth-Optimal Assuming Constant Bit Rate Lars Engebretsen1, and Madhu Street Cambridge, Massachusetts 02139 USA E-mail: madhu@mit.edu November 2005 Abstract. Harmonic for video-on-demand broadcasting. In this paper, we note that harmonic broadcasting is actually a spe- cial

  10. On Efficient Bandwidth Allocation for Traffic Variability in Datacenters

    E-Print Network [OSTI]

    Lui, John C.S.

    On Efficient Bandwidth Allocation for Traffic Variability in Datacenters Jian Guo1 Fangming Liu1 of Hong Kong. Abstract--Datacenter networks suffer unpredictable perfor- mance due to a lack dynamic traffic in datacenter networks. In this paper, we consider the effects of large numbers of short

  11. Optimal Allocation of Bandwidth for Minimum Battery Consumption

    E-Print Network [OSTI]

    Cosman, Pamela C.

    properties of the battery under bursty discharge conditions are exploited. In this paper, we exploitOptimal Allocation of Bandwidth for Minimum Battery Consumption Qinghua Zhao, Pamela C. Cosman, a power amplifier utilizes battery energy more efficiently with a higher transmission power. For a given

  12. Throttling Tor Bandwidth Parasites Rob Jansen Paul Syverson

    E-Print Network [OSTI]

    Throttling Tor Bandwidth Parasites Rob Jansen Paul Syverson U.S. Naval Research Laboratory {rob.g.jansen, paul.syverson}@nrl.navy.mil Nicholas Hopper University of Minnesota hopper@cs.umn.edu Abstract Tor of the available network capacity is consumed by a small percentage of Tor users, resulting in severe service degra

  13. Efficiently Monitoring Bandwidth and Latency in IP Networks

    E-Print Network [OSTI]

    Chan, Chee Yong

    of the up-to-date band- width utilizations and path latencies is critical for numerous im- portant network the challenging problem of efficiently monitoring bandwidth utilization and path latencies in an IP data network of links or packet flows, and (b) path latencies for a given set of paths, while minimizing the overhead

  14. Efficiently Monitoring Bandwidth and Latency in IP Networks

    E-Print Network [OSTI]

    Garofalakis, Minos

    of the up­to­date band­ width utilizations and path latencies is critical for numerous im­ portant network the challenging problem of efficiently monitoring bandwidth utilization and path latencies in an IP data network of links or packet flows, and (b) path latencies for a given set of paths, while minimizing the overhead

  15. Minimal Backlogging Method for Estimation of Available Bandwidth

    E-Print Network [OSTI]

    Nam, Seung Yeob

    is usually defined as Ca = min 1iH Ci(1 - ui), where Ci and ui be the link rate and the utilization of the i1 Minimal Backlogging Method for Estimation of Available Bandwidth Seung Yeob Nam, Sunggon Kim, and Dan Keun Sung Department of Electrical Engineering and Computer Science, KAIST, Daejeon, 305

  16. The Information Mural: Increasing Information Bandwidth in Visualizations

    E-Print Network [OSTI]

    Stasko, John T.

    The Information Mural: Increasing Information Bandwidth in Visualizations Dean F. Jerding and John Abstract Information visualizations must allow users to browse information spaces and focus quickly on items of interest. Being able to see some representation of the entire information space provides

  17. 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

  18. Wide bandwidth dual acoustic gravitational wave detectors M. Bonaldia

    E-Print Network [OSTI]

    instruments and methods to search for gravitational waves from the universe. Resonant mass "bar" detectors [1 of quanta of vibration at about 1 kHz. However it is commonly accepted in the community that, to enter be achieved. Traditional acoustic detectors are seriously lim- ited in terms of bandwidth (typically to about

  19. Scheduling Switching Element (SE) Disjoint Connections in StageControlled Photonic Banyans 1

    E-Print Network [OSTI]

    Qiao, Chunming

    . For a given set of connections (or packets), it is desirable to establish them in as few rounds as possible where the number of rounds (i.e. schedule length) corresponds to the degree at which a cross­connect may­rate and a high degree of transparency (e.g. coding format) as well as virtually unlimited bandwidth [5, 6

  20. ClientClient--Side Web Acceleration forSide Web Acceleration for LowLow--Bandwidth HostsBandwidth Hosts

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    of objects in HTML. ­ Objects requests for a single Web page are delivered to multiple servers. 2) MultipleClientClient--Side Web Acceleration forSide Web Acceleration for LowLow--Bandwidth Hosts, GA, USA #12;2 of 23 IntroductionIntroduction · Current Web optimization techniques ­ Web cache

  1. Abacus switch: a new scalable multicast ATM switch H. Jonathan Chao and Jin-Soo Park

    E-Print Network [OSTI]

    Chao, Jonathan

    Abacus switch: a new scalable multicast ATM switch H. Jonathan Chao and Jin-Soo Park Polytechnic describes a new architecture for a scalable multicast ATM switch from a few tens to thousands of input ports. The switch, called Abacus switch, has a nonblocking memoryless switch fabric followed by small switch modules

  2. Plasma opening switch

    DOE Patents [OSTI]

    Savage, Mark E. (Albuquerque, NM); Mendel, Jr., Clifford W. (Albuquerque, NM)

    2001-01-01

    A command triggered plasma opening switch assembly using an amplification stage. The assembly surrounds a coaxial transmission line and has a main plasma opening switch (POS) close to the load and a trigger POS upstream from the main POS. The trigger POS establishes two different current pathways through the assembly depended on whether it has received a trigger current pulse. The initial pathway has both POS's with plasma between their anodes and cathodes to form a short across the transmission line and isolating the load. The final current pathway is formed when the trigger POS receives a trigger current pulse which energizes its fast coil to push the conductive plasma out from between its anode and cathode, allowing the main transmission line current to pass to the fast coil of the main POS, thus pushing its plasma out the way so as to establish a direct current pathway to the load.

  3. 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.

  4. CREE: Making the Switch

    ScienceCinema (OSTI)

    Grider, David; Palmer, John

    2014-04-09

    CREE, with the help of ARPA-E funding, has developed a Silicon Carbide (SIC) transistor which can be used to create solid state transformers capable of meeting the unique needs of the emerging smart grid. SIC transistors are different from common silicon computer chips in that they handle grid scale voltages with ease and their high frequency switching is well suited to the intermittent nature of renewable energy generation.

  5. CREE: Making the Switch

    SciTech Connect (OSTI)

    Grider, David; Palmer, John

    2014-03-06

    CREE, with the help of ARPA-E funding, has developed a Silicon Carbide (SIC) transistor which can be used to create solid state transformers capable of meeting the unique needs of the emerging smart grid. SIC transistors are different from common silicon computer chips in that they handle grid scale voltages with ease and their high frequency switching is well suited to the intermittent nature of renewable energy generation.

  6. Automatic switching matrix

    DOE Patents [OSTI]

    Schlecht, Martin F. (Cambridge, MA); Kassakian, John G. (Newton, MA); Caloggero, Anthony J. (Lynn, MA); Rhodes, Bruce (Dorchester, MA); Otten, David (Newton, MA); Rasmussen, Neil (Sudbury, MA)

    1982-01-01

    An automatic switching matrix that includes an apertured matrix board containing a matrix of wires that can be interconnected at each aperture. Each aperture has associated therewith a conductive pin which, when fully inserted into the associated aperture, effects electrical connection between the wires within that particular aperture. Means is provided for automatically inserting the pins in a determined pattern and for removing all the pins to permit other interconnecting patterns.

  7. Software-Hardware Co-Defined Network Switch (SHADES) for a Label Switching Protocol

    E-Print Network [OSTI]

    Karadeniz, Turhan

    2015-01-01

    4.2.1 The Switch Fabric . . . . . . . . . . .of a Network-on-Chip Based Load Balancing Switch Fabric 4.15.3 MRG Based Switch Fabric Architecture . . . . . . . .

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

    E-Print Network [OSTI]

    Patel, Chirag D.; Patel, Chirag D.

    2012-01-01

    MEMS switches for RF applications,” MicroelectromechanicalMEMS switch with a corrugated diaphragm,” MicroelectromechanicalMEMS switch technology for high frequency applications,” in Microelectromechanical

  9. Designing and Testing a New Shack-Hartmann High Bandwidth Two-Dimensional Wave front Sensor

    E-Print Network [OSTI]

    Gordeyev, Stanislav

    Designing and Testing a New Shack-Hartmann High Bandwidth Two-Dimensional Wave front Sensor Shaddy Dame, Notre Dame, IN 46656 A novel Shack-Hartmann high bandwidth two-dimensional wave front sensor

  10. Network Stability under Alpha Fair Bandwidth Allocation with General File Size Distribution

    E-Print Network [OSTI]

    fair bandwidth allocation, with any positive alpha parameter, a Lyapunov function is constructed1 Network Stability under Alpha Fair Bandwidth Allocation with General File Size Distribution. Cornell University, Ithaca, NY. Swinburne University of Technology, Australia. Abstract--Rate allocation

  11. Code constructions and code families for nonbinary quantum stabilizer code 

    E-Print Network [OSTI]

    Ketkar, Avanti Ulhas

    2005-11-01

    Stabilizer codes form a special class of quantum error correcting codes. Nonbinary quantum stabilizer codes are studied in this thesis. A lot of work on binary quantum stabilizer codes has been done. Nonbinary stabilizer codes have received much...

  12. Compound semiconductor optical waveguide switch

    DOE Patents [OSTI]

    Spahn, Olga B.; Sullivan, Charles T.; Garcia, Ernest J.

    2003-06-10

    An optical waveguide switch is disclosed which is formed from III-V compound semiconductors and which has a moveable optical waveguide with a cantilevered portion that can be bent laterally by an integral electrostatic actuator to route an optical signal (i.e. light) between the moveable optical waveguide and one of a plurality of fixed optical waveguides. A plurality of optical waveguide switches can be formed on a common substrate and interconnected to form an optical switching network.

  13. Sensor Switch's Bright Manufacturing Future

    Broader source: Energy.gov [DOE]

    The switch helps with cost effective energy savings by turning off the lights when an occupancy sensor says the room is empty.

  14. Switched differential algebraic equations Stephan Trenn

    E-Print Network [OSTI]

    Trenn, Stephan

    Switched differential algebraic equations Stephan Trenn Abstract In this chapter an electrical circuit with switches is modeled as a switched differential algebraic equation (switched DAE), i.e. each is the input. The resulting time-variance follows from the action of the switches present in the circuit

  15. Hybrid switch for resonant power converters

    DOE Patents [OSTI]

    Lai, Jih-Sheng; Yu, Wensong

    2014-09-09

    A hybrid switch comprising two semiconductor switches connected in parallel but having different voltage drop characteristics as a function of current facilitates attainment of zero voltage switching and reduces conduction losses to complement reduction of switching losses achieved through zero voltage switching in power converters such as high-current inverters.

  16. Data center coolant switch

    DOE Patents [OSTI]

    Iyengar, Madhusudan K.; Parida, Pritish R.; Schultz, Mark D.

    2015-10-06

    A data center cooling system is operated in a first mode; it has an indoor portion wherein heat is absorbed from components in the data center, and an outdoor heat exchanger portion wherein outside air is used to cool a first heat transfer fluid (e.g., water) present in at least the outdoor heat exchanger portion of the cooling system during the first mode. The first heat transfer fluid is a relatively high performance heat transfer fluid (as compared to the second fluid), and has a first heat transfer fluid freezing point. A determination is made that an appropriate time has been reached to switch from the first mode to a second mode. Based on this determination, the outdoor heat exchanger portion of the data cooling system is switched to a second heat transfer fluid, which is a relatively low performance heat transfer fluid, as compared to the first heat transfer fluid. It has a second heat transfer fluid freezing point lower than the first heat transfer fluid freezing point, and the second heat transfer fluid freezing point is sufficiently low to operate without freezing when the outdoor air temperature drops below a first predetermined relationship with the first heat transfer fluid freezing point.

  17. mm-Wave Phase Shifters and Switches

    E-Print Network [OSTI]

    Adabi Firouzjaei, Ehsan

    2010-01-01

    a transformer-based shunt switch and its equivalent circuitTraditional shunt switches occupy a large footprint as a2.4 Transformer based switch design example in 90nm CMOS

  18. Did a Switch in Time Save Nine?

    E-Print Network [OSTI]

    Quinn, Kevin M.; Ho, Daniel E.

    2009-01-01

    Benjamin A. Kleinerman. 2002. “A Switch in Time Saves Nine:John W. 1969. “The Big Switch: Justice Roberts and theG. 2005. “When Did the ”Switch in Time” Actually Occur? :

  19. Robust adaptive control of switched systems

    E-Print Network [OSTI]

    El-Rifai, Khalid, 1979-

    2007-01-01

    In this thesis, robust adaptive controllers are developed for classes of switched nonlinear systems. Switched systems are those governed by differential equations, which undergo vector field switching due to sudden changes ...

  20. Switched-Mode Power Converter Programmable

    E-Print Network [OSTI]

    Switched-Mode Power Converter Programmable compensator Identification & design Vref DPWM vout digital controller design for switching power converters. Starting from an experimentally identified Digital Controller Design for Switching Converters Abstract--This paper presents an approach to automated

  1. Battery switch for downhole tools

    DOE Patents [OSTI]

    Boling, Brian E. (Sugar Land, TX)

    2010-02-23

    An electrical circuit for a downhole tool may include a battery, a load electrically connected to the battery, and at least one switch electrically connected in series with the battery and to the load. The at least one switch may be configured to close when a tool temperature exceeds a selected temperature.

  2. "Smart" watchdog safety switch

    DOE Patents [OSTI]

    Kronberg, James W. (353 Church Rd., Beech Island, SC 29842)

    1991-01-01

    A method and apparatus for monitoring a process having a periodic output so that the process equipment is not damaged in the event of a controller failure, comprising a low-pass and peak clipping filter, an event detector that generates an event pulse for each valid change in magnitude of the filtered periodic output, a timing pulse generator, a counter that increments upon receipt of any timing pulse and resets to zero on receipt of any event pulse, an alarm that alerts when the count reaches some preselected total count, and a set of relays that opens to stop power to process equipment. An interface module can be added to allow the switch to accept a variety of periodic output signals.

  3. ''Smart'' watchdog safety switch

    DOE Patents [OSTI]

    Kronberg, J.W.

    1991-10-01

    A method and apparatus for monitoring a process having a periodic output so that the process equipment is not damaged in the event of a controller failure, comprising a low-pass and peak clipping filter, an event detector that generates an event pulse for each valid change in magnitude of the filtered periodic output, a timing pulse generator, a counter that increments upon receipt of any timing pulse and resets to zero on receipt of any event pulse, an alarm that alerts when the count reaches some preselected total count, and a set of relays that opens to stop power to process equipment. An interface module can be added to allow the switch to accept a variety of periodic output signals. 21 figures.

  4. High voltage coaxial switch

    DOE Patents [OSTI]

    Rink, John P. (Los Alamos, NM)

    1983-07-19

    A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be merely air) between the inner and outer electrodes. The discharge provides a low impedance path between a high voltage charge placed on the outer electrode and a load (which may be a high power laser) coupled to the inner electrode. For high repetition rate the gas between the inner and outer electrodes may be continuously exchanged or refreshed under pressure.

  5. High voltage coaxial switch

    DOE Patents [OSTI]

    Rink, J.P.

    1983-07-19

    A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be merely air) between the inner and outer electrodes. The discharge provides a low impedance path between a high voltage charge placed on the outer electrode and a load (which may be a high power laser) coupled to the inner electrode. For high repetition rate the gas between the inner and outer electrodes may be continuously exchanged or refreshed under pressure. 3 figs.

  6. Optimized scalable network switch

    DOE Patents [OSTI]

    Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton on Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY)

    2010-02-23

    In a massively parallel computing system having a plurality of nodes configured in m multi-dimensions, each node including a computing device, a method for routing packets towards their destination nodes is provided which includes generating at least one of a 2m plurality of compact bit vectors containing information derived from downstream nodes. A multilevel arbitration process in which downstream information stored in the compact vectors, such as link status information and fullness of downstream buffers, is used to determine a preferred direction and virtual channel for packet transmission. Preferred direction ranges are encoded and virtual channels are selected by examining the plurality of compact bit vectors. This dynamic routing method eliminates the necessity of routing tables, thus enhancing scalability of the switch.

  7. Dielectric liquid pulsed-power switch

    DOE Patents [OSTI]

    Christophorou, Loucas G. (Oak Ridge, TN); Faidas, Homer (Knoxville, TN)

    1990-01-01

    This disclosure identifies dielectric liquids for use as opening and closing switching media in pulsed power technology, and describes a dielectric-liquid-pulsed-power switch empolying flashlamps.

  8. Alarm toe switch. [Patent application

    DOE Patents [OSTI]

    Ganyard, F.P.

    1980-11-18

    An alarm toe switch inserted within a shoe for energizing an alarm circuit in a covert manner includes an insole mounting pad into which a miniature reed switch is fixedly molded. An elongated slot perpendicular to the reed switch is formed in the bottom surface of the mounting pad. A permanent cylindrical magnet positioned in the forward portion of the slot with a diameter greater than the pad thickness causes a bump above the pad. A foam rubber block is also positioned in the slot rearwardly of the magnet and holds the magnet in normal inoperative relation. A non-magnetic support plate covers the slot and holds the magnet and foam rubber in the slot. The plate minimizes bending and frictional forces to improve movement of the magnet for reliable switch activation. The bump occupies the knuckle space beneath the big toe. When the big toe is scrunched rearwardly the magnet is moved within the slot relative to the reed switch, thus magnetically activating the switch. When toe pressure is released the foam rubber block forces the magnet back into normal inoperative position to deactivate the reed switch.

  9. CURRICULUM CODE: 611 & 613 MINOR CODE 061 DEGREE CODE: 31

    E-Print Network [OSTI]

    Qiu, Weigang

    CURRICULUM CODE: 611 & 613 MINOR CODE 061 DEGREE CODE: 31 DAAF 12/09 Hunter College of the City Stamp THIS AUDIT IS NOT OFFICIAL UNTIL APPROVED BY THE OFFICE OF THE REGISTRAR DEGREE AUDIT UNIT Student Specialization Section #12;CURRICULUM CODE: 611 & 613 MINOR CODE 061 DEGREE CODE: 31 DAAF 12/09 *****A SEPARATE

  10. CURRICULUM CODE_611 & 613 MINOR CODE 062 DEGREE CODE _31_

    E-Print Network [OSTI]

    Qiu, Weigang

    CURRICULUM CODE_611 & 613 MINOR CODE 062 DEGREE CODE _31_ 1/24/2006 Hunter College of the City-mail address Department Stamp THIS AUDIT IS NOT OFFICIAL UNTIL APPROVED BY THE OFFICE OF THE REGISTRAR, DEGREE Section Only For January 2010 Graduate #12;CURRICULUM CODE_611 & 613 MINOR CODE 062 DEGREE CODE _31_ 1

  11. Task Switching Versus Cue Switching: Using Transition Cuing to Disentangle Sequential Effects in Task-Switching Performance

    E-Print Network [OSTI]

    Logan, Gordon D.

    Task Switching Versus Cue Switching: Using Transition Cuing to Disentangle Sequential Effects in Task-Switching Performance Darryl W. Schneider and Gordon D. Logan Vanderbilt University Recent methodological advances have allowed researchers to address confounds in the measurement of task-switch costs

  12. Identifying Lights with their Switches Jayadev Misra

    E-Print Network [OSTI]

    Misra, Jayadev

    Identifying Lights with their Switches Jayadev Misra 09/07/2012 Problem Description Given are N switches and N lights where each switch controls exactly one light and each light is controlled by exactly one switch. The wiring diagram is unavailable and the wiring itself is hidden. A step consists

  13. Optical Packet Switching -1 Optical Networks

    E-Print Network [OSTI]

    Mellia, Marco

    Optical Packet Switching - 1 Optical Networks: from fiber transmission to photonic switching Optical Packet Switching Fabio Neri and Marco Mellia TLC Networks Group ­ Electronics Department e.mellia@polito.it ­ tel. 011 564 4173 #12;Optical Packet Switching - 2 · This work is licensed under the Creative Commons

  14. Dynamically reconfigurable optical packet switch (DROPS)

    E-Print Network [OSTI]

    Huang, C H; Chou, H F; Bowers, J E; Toudeh-Fallah, F; Gyurek, R

    2006-01-01

    provided by the microelectromechanical systems (MEMS)switches based on the microelectromechanical systems (MEMS)

  15. Wide Bandgap Extrinsic Photoconductive Switches

    SciTech Connect (OSTI)

    Sullivan, J S

    2012-01-17

    Photoconductive semiconductor switches (PCSS) have been investigated since the late 1970s. Some devices have been developed that withstand tens of kilovolts and others that switch hundreds of amperes. However, no single device has been developed that can reliably withstand both high voltage and switch high current. Yet, photoconductive switches still hold the promise of reliable high voltage and high current operation with subnanosecond risetimes. Particularly since good quality, bulk, single crystal, wide bandgap semiconductor materials have recently become available. In this chapter we will review the basic operation of PCSS devices, status of PCSS devices and properties of the wide bandgap semiconductors 4H-SiC, 6H-SiC and 2H-GaN.

  16. Regenerative switching CMOS system

    DOE Patents [OSTI]

    Welch, J.D.

    1998-06-02

    Complementary Metal Oxide Semiconductor (CMOS) Schottky barrier Field Effect Transistor systems, which are a series combination of N and P-Channel MOSFETS, in which Source Schottky barrier junctions of the N and P-Channel Schottky barrier MOSFETS are electrically interconnected, (rather than the Drains as in conventional diffused junction CMOS), which Schottky barrier MOSFET system demonstrates Regenerative Inverting Switching Characteristics in use are disclosed. Both the N and P-Channel Schottky barrier MOSFET devices are unique in that they provide operational Drain Current vs. Drain to Source voltage as a function of Gate voltage only where the polarities of the Drain voltage and Gate voltage are opposite, referenced to the Source as a common terminal, and where the polarity of the voltage applied to the Gate is appropriate to cause Channel inversion. Experimentally derived results which demonstrate and verify the operation of N and P-Channel Schottky barrier MOSFETS actually fabricated on P and N-type Silicon respectively, by a common procedure using vacuum deposited Chromium as a Schottky barrier forming metal, are also provided. 14 figs.

  17. Regenerative switching CMOS system

    DOE Patents [OSTI]

    Welch, James D. (10328 Pinehurst Ave., Omaha, NE 68124)

    1998-01-01

    Complementary Metal Oxide Semiconductor (CMOS) Schottky barrier Field Effect Transistor systems, which are a seriesed combination of N and P-Channel MOSFETS, in which Source Schottky barrier junctions of the N and P-Channel Schottky barrier MOSFETS are electically interconnected, (rather than the Drains as in conventional diffused junction CMOS), which Schottky barrier MOSFET system demonstrates Regenerative Inverting Switching Characteristics in use are disclosed. Both the N and P-Channel Schottky barrier MOSFET devices are unique in that they provide operational Drain Current vs. Drain to Source voltage as a function of Gate voltage only where the polarities of the Drain voltage and Gate voltage are opposite, referenced to the Source as a common terminal, and where the polarity of the voltage applied to the Gate is appropriate to cause Channel inversion. Experimentally derived results which demonstrate and verify the operation of N and P-Channel Schottky barrier MOSFETS actually fabricated on P and N-type Silicon respectively, by a common procedure using vacuum deposited Chromium as a Schottky barrier forming metal, are also provided.

  18. High PRF high current switch

    DOE Patents [OSTI]

    Moran, Stuart L. (Fredericksburg, VA); Hutcherson, R. Kenneth (College Park, MD)

    1990-03-27

    A triggerable, high voltage, high current, spark gap switch for use in pu power systems. The device comprises a pair of electrodes in a high pressure hydrogen environment that is triggered by introducing an arc between one electrode and a trigger pin. Unusually high repetition rates may be obtained by undervolting the switch, i.e., operating the trigger at voltages much below the self-breakdown voltage of the device.

  19. Entanglement Switch for Dipole Arrays

    E-Print Network [OSTI]

    Qi Wei; Sabre Kais; Yong P. Chen

    2010-02-25

    We propose a new entanglement switch of qubits consisting of electric dipoles, oriented along or against an external electric field and coupled by the electric dipole-dipole interaction. The pairwise entanglement can be tuned and controlled by the ratio of the Rabi frequency and the dipole-dipole coupling strength. Tuning the entanglement can be achieved for one, two and three-dimensional arrangements of the qubits. The feasibility of building such an entanglement switch is also discussed.

  20. Optimal Switching with Quasi-Left-Continuous Switching Costs that Can Change Sign

    E-Print Network [OSTI]

    Sidorov, Nikita

    Optimal Switching with Quasi-Left-Continuous Switching Costs that Can Change Sign Randall Martyr of Mathematics, The University of Manchester #12;Optimal switching with quasi-left-continuous switching costs switching over multiple modes on a finite-horizon in contin- uous time. The performance index includes

  1. Electronic logic for enhanced switch reliability

    DOE Patents [OSTI]

    Cooper, J.A.

    1984-01-20

    A logic circuit is used to enhance redundant switch reliability. Two or more switches are monitored for logical high or low output. The output for the logic circuit produces a redundant and fail-safe representation of the switch outputs. When both switch outputs are high, the output is high. Similarly, when both switch outputs are low, the logic circuit's output is low. When the output states of the two switches do not agree, the circuit resolves the conflict by memorizing the last output state which both switches were simultaneously in and produces the logical complement of this output state. Thus, the logic circuit of the present invention allows the redundant switches to be treated as if they were in parallel when the switches are open and as if they were in series when the switches are closed. A failsafe system having maximum reliability is thereby produced.

  2. ESnet's On-Demand Bandwidth Reservation Service Wins R&D 100...

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

    On-Demand Bandwidth Reservation Service Wins R&D 100 Award News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us...

  3. High Power Metal-Contact and Capacitive Switches with Stress Resilient Designs /

    E-Print Network [OSTI]

    Zareie, Hosein

    2013-01-01

    2.2 Switch Design . . . . . . . . . . . . . . . . . . . .5.2 Switch Design . . . . . . . . . . . .SPST Switch . . . . . . . . . . . . . . . . . . . . . . .

  4. High-bandwidth continuous-flow arc furnace

    DOE Patents [OSTI]

    Hardt, D.E.; Lee, S.G.

    1996-08-06

    A high-bandwidth continuous-flow arc furnace for stream welding applications includes a metal mass contained in a crucible having an orifice. A power source charges an electrode for generating an arc between the electrode and the mass. The arc heats the metal mass to a molten state. A pressurized gas source propels the molten metal mass through the crucible orifice in a continuous stream. As the metal is ejected, a metal feeder replenishes the molten metal bath. A control system regulates the electrode current, shielding gas pressure, and metal source to provide a continuous flow of molten metal at the crucible orifice. Independent control over the electrode current and shield gas pressure decouples the metal flow temperature and the molten metal flow rate, improving control over resultant weld characteristics. 4 figs.

  5. High-bandwidth continuous-flow arc furnace

    DOE Patents [OSTI]

    Hardt, David E. (Concord, MA); Lee, Steven G. (Ann Arbor, MI)

    1996-01-01

    A high-bandwidth continuous-flow arc furnace for stream welding applications includes a metal mass contained in a crucible having an orifice. A power source charges an electrode for generating an arc between the electrode and the mass. The arc heats the metal mass to a molten state. A pressurized gas source propels the molten metal mass through the crucible orifice in a continuous stream. As the metal is ejected, a metal feeder replenishes the molten metal bath. A control system regulates the electrode current, shielding gas pressure, and metal source to provide a continuous flow of molten metal at the crucible orifice. Independent control over the electrode current and shield gas pressure decouples the metal flow temperature and the molten metal flow rate, improving control over resultant weld characteristics.

  6. Non-latching relay switch assembly

    DOE Patents [OSTI]

    Duimstra, Frederick A. (Anaheim Hills, CA)

    1991-01-01

    A non-latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes a permanent magnet and an electromagnet. The respective sections are arranged in separate locations or cavities in the assembly. The switch has a "normal" position and is selectively switched by an overriding electromagnetic assembly. The switch returns to the "normal" position when the overriding electromagnetic assembly is inactive.

  7. Computing Augmented Finite Transition Systems to Synthesize Switching Protocols for Polynomial Switched Systems

    E-Print Network [OSTI]

    Ozay, Necmiye

    Computing Augmented Finite Transition Systems to Synthesize Switching Protocols for Polynomial algorithms to compute abstractions for polynomial switched systems. Moreover, we define a refinement relation Switched Systems Necmiye Ozay, Jun Liu, Pavithra Prabhakar, and Richard M. Murray Abstract-- This work

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

    E-Print Network [OSTI]

    Patel, Chirag D.; Patel, Chirag D.

    2012-01-01

    A Compact Cantilever-Based RF MEMS Switch andA High-Performance RF MEMS Metal-Contact Switch and Switch-B High-Q 3-/4-Bit RF MEMS Digitally Tunable Capacitors for

  9. All-optical packet switching of 160 Gb/s packets with all-optical processing of 10 Gb/s headers

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    1 All-optical packet switching of 160 Gb/s packets with all-optical processing of 10 Gb/s headers the first demonstration of all-optical packet switching of 160 Gb/s packets with all-optical header. 2006 Optical Society of America OCIS codes: (230.1150) All-optical devices; (190.1450) Bistability

  10. WBest: a Bandwidth Estimation Tool for IEEE 802.11 Wireless Networks

    E-Print Network [OSTI]

    Claypool, Mark

    WBest: a Bandwidth Estimation Tool for IEEE 802.11 Wireless Networks Mingzhe Li, Mark Claypool results and long convergence times on wireless networks where capacity can vary dramatically. This paper of applications that need bandwidth estimation, such as multimedia streaming, on wireless networks. I

  11. EFFECTIVENESS OF LEAD-LAG PHASING ON PROGRESSION BANDWIDTH Zong Tian (Corresponding Author)

    E-Print Network [OSTI]

    Tian, Zong Z.

    EFFECTIVENESS OF LEAD-LAG PHASING ON PROGRESSION BANDWIDTH Zong Tian (Corresponding Author) Varun of using lead-lag phasing, and 2) the effect of number of signals on progression bandwidth. A computer that lead-lag phasing had a significant advantage over the leading left-turn and lagging left-turn phasing

  12. Falloc: Fair Network Bandwidth Allocation in IaaS Datacenters via a Bargaining Game Approach

    E-Print Network [OSTI]

    Lui, John C.S.

    Falloc: Fair Network Bandwidth Allocation in IaaS Datacenters via a Bargaining Game Approach Jian by renting the shared resources in datacenters. Unlike resources such as CPU and memory, datacenter network-based fairness across the datacenter with two main objectives: (i) guarantee bandwidth for VMs based

  13. Energy and Bandwidth-Efficient Wireless Sensor Networks for Monitoring High-Frequency Events

    E-Print Network [OSTI]

    Wu, Jie

    to re- duced resource usage (e.g., energy, radio bandwidth) in WSNs. First, e-Sampling providesEnergy and Bandwidth-Efficient Wireless Sensor Networks for Monitoring High-Frequency Events Md Zakirul Alam Bhuiyan, Guojun Wang, Jiannong Cao, and Jie Wu§ School of Information Science and Engineering

  14. Heterogeneous Modulation for Trading-off Energy Balancing with Bandwidth Efficiency in Hierarchical Sensor Networks

    E-Print Network [OSTI]

    Pedram, Massoud

    Heterogeneous Modulation for Trading-off Energy Balancing with Bandwidth Efficiency in Hierarchical modulation scheme and report its impact on the spatial distribution of energy dissipation and the resulting due to inherent trade-offs in power efficiency and bandwidth efficiency of the different modulation

  15. Two-dimensional high-bandwidth Shack-Hartmann wavefront sensor

    E-Print Network [OSTI]

    Gordeyev, Stanislav

    Two-dimensional high-bandwidth Shack-Hartmann wavefront sensor: design guidelines and evaluation-dimensional high-bandwidth Shack-Hartmann wavefront sensor was designed and tested, addressing the high tempo- ral Engineers. DOI: 10.1117/1.3454383 Subject terms: aero-optics; Shack-Hartmann; wavefront sensor; adaptive

  16. Simple piezoelectric-actuated mirror with 180 kHz servo bandwidth

    E-Print Network [OSTI]

    for a piezoelectric transducer (PZT). The actuator should be very useful in a wide variety of applications requiringSimple piezoelectric-actuated mirror with 180 kHz servo bandwidth Travis C. Briles1,, Dylan C. Yost.briles@colorado.edu Abstract: We present a high bandwidth piezoelectric-actuated mirror for length stabilization of an optical

  17. Surface Studies of Aqueous Methanol Solutions by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy

    E-Print Network [OSTI]

    Surface Studies of Aqueous Methanol Solutions by Vibrational Broad Bandwidth Sum Frequency methanol (CH3OH) and aqueous methanol solutions were investigated using broad bandwidth sum frequency of methanol molecules at the air-liquid interfaces of neat methanol and aqueous methanol solutions. However

  18. The Minimum Bandwidth of Narrowband Spikes in Solar Flare Decimetric Radio Waves

    E-Print Network [OSTI]

    Peter Messmer; Arnold O. Benz

    1999-12-23

    The minimum and the mean bandwidth of individual narrowband spikes in two events in decimetric radio waves is determined by means of multi-resolution analysis. Spikes of a few tens of millisecond duration occur at decimetric/microwave wavelength in the particle acceleration phase of solar flares. A first method determines the dominant spike bandwidth scale based on their scalegram, the mean squared wavelet coefficient at each frequency scale. This allows to measure the scale bandwidth independently of heuristic spike selection criteria, e.g. manual selection. The major drawback is a low resolution in the bandwidth. To overcome this uncertainty, a feature detection algorithm and a criterion for spike shape in the time-frequency plane is applied to locate the spikes. In that case, the bandwidth is measured by fitting an assumed spike profile into the denoised data. The smallest FWHM bandwidth of spikes was found at 0.17 % and 0.41 % of the center frequency in the two events. Knowing the shortest relevant bandwidth of spikes, the slope of the Fourier power spectrum of this two events was determined and no resemblance to a Kolmogorov spectrum detected. Additionally the correlation between spike peak flux and bandwidth was examined.

  19. Robust metal contact and capacitive mini-MEMS switches

    E-Print Network [OSTI]

    Sedaghat Pisheh, Hojr

    2013-01-01

    on Stress-Gradient Robust SPST Switch Design . . . . . . .2.2.1 Switch Design . . . . . . . . . . . . . .of SPST Circular Metal-Contact Switch . . . . . . . . . .

  20. Reinventing the PN Junction: Dimensionality Effects on Tunneling Switches

    E-Print Network [OSTI]

    Agarwal, Sapan

    2012-01-01

    Effects on Tunneling Switches By Sapan Agarwal AEffects on Tunneling Switches Copyright © 2012 by SapanEffects on Tunneling Switches by Sapan Agarwal Doctor of

  1. Optical Switch Using Risley Prisms

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM); Christenson, Todd R. (Albuquerque, NM)

    2005-02-22

    An optical switch using Risley prisms and rotary microactuators to independently rotate the wedge prisms of each Risley prism pair is disclosed. The optical switch comprises an array of input Risley prism pairs that selectively redirect light beams from a plurality of input ports to an array of output Risley prism pairs that similarly direct the light beams to a plurality of output ports. Each wedge prism of each Risley prism pair can be independently rotated by a variable-reluctance stepping rotary microactuator that is fabricated by a multi-layer LIGA process. Each wedge prism can be formed integral to the annular rotor of the rotary microactuator by a DXRL process.

  2. Optical switch using Risley prisms

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM); Christenson, Todd R. (Albuquerque, NM)

    2003-04-15

    An optical switch using Risley prisms and rotary microactuators to independently rotate the wedge prisms of each Risley prism pair is disclosed. The optical switch comprises an array of input Risley prism pairs that selectively redirect light beams from a plurality of input ports to an array of output Risley prism pairs that similarly direct the light beams to a plurality of output ports. Each wedge prism of each Risley prism pair can be independently rotated by a variable-reluctance stepping rotary microactuator that is fabricated by a multi-layer LIGA process. Each wedge prism can be formed integral to the annular rotor of the rotary microactuator by a DXRL process.

  3. Anonymous broadcasting with a continuous-variable topological quantum code

    E-Print Network [OSTI]

    Nicolas C. Menicucci; Tommaso F. Demarie; Gavin K. Brennen

    2015-03-02

    Broadcasting information anonymously becomes more difficult as surveillance technology improves, but remarkably, quantum protocols exist that enable provably traceless broadcasting. The difficulty is making scalable entangled resource states that are robust to errors. We propose an anonymous broadcasting protocol that uses a continuous-variable toric-code state, which can be produced using current technology. High squeezing enables large transmission bandwidth and strong anonymity, and the topological nature of the state enables local error correction.

  4. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Bureau of Construction Codes is responsible for the administration of the State Construction Code Act (1972 PA 230), also known as the Uniform Construction Code.

  5. Building Energy Code

    Broader source: Energy.gov [DOE]

    Georgia's Department of Community Affairs periodically reviews, amends and/or updates the state minimum standard codes. Georgia has "mandatory" and "permissive" codes. Georgia State Energy Code...

  6. IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 25, NO. 10, MAY 15, 2013 899 Photonic Generation of a Phase-Coded Microwave

    E-Print Network [OSTI]

    Yao, Jianping

    -Coded Microwave Waveform With Ultrawide Frequency Tunable Range Liang Gao, Student Member, IEEE, Xiangfei Chen-coded microwave waveform with ultrawide frequency tunable range using two polarization modulators (Pol signal with a switching voltage of V to PolM1, a phase-coded microwave waveform is generated. The key

  7. Laser bandwidth interlock capable of single pulse detection and rejection

    DOE Patents [OSTI]

    Armstrong, James P; Telford, Steven James; Lanning, Rodney Kay; Bayramian, Andrew James

    2012-10-09

    A pulse of laser light is switched out of a pulse train and spatially dispersed into its constituent wavelengths. The pulse is collimated to a suitable size and then diffracted by high groove density multilayer dielectric gratings. This imparts a different angle to each individual wavelength so that, when brought to the far field with a lens, the colors have spread out in a linear arrangement. The distance between wavelengths (resolution) can be tailored for the specific laser and application by altering the number of times the beam strikes the diffraction gratings, the groove density of the gratings and the focal length of the lens. End portions of the linear arrangement are each directed to a respective detector, which converts the signal to a 1 if the level meets a set-point, and a 0 if the level does not. If both detectors produces a 1, then the pulse train is allowed to propagate into an optical system.

  8. High voltage MOSFET switching circuit

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1994-01-01

    The problem of source lead inductance in a MOSFET switching circuit is compensated for by adding an inductor to the gate circuit. The gate circuit inductor produces an inductive spike which counters the source lead inductive drop to produce a rectangular drive voltage waveform at the internal gate-source terminals of the MOSFET.

  9. Anode initiated surface flashover switch

    DOE Patents [OSTI]

    Brainard, John P. (Albuquerque, NM); Koss, Robert J. (Albuquerque, NM)

    2003-04-29

    A high voltage surface flashover switch has a pair of electrodes spaced by an insulator. A high voltage is applied to an anode, which is smaller than the opposing, grounded, cathode. When a controllable source of electrons near the cathode is energized, the electrons are attracted to the anode where they reflect to the insulator and initiate anode to cathode breakdown.

  10. High voltage MOSFET switching circuit

    DOE Patents [OSTI]

    McEwan, T.E.

    1994-07-26

    The problem of source lead inductance in a MOSFET switching circuit is compensated for by adding an inductor to the gate circuit. The gate circuit inductor produces an inductive spike which counters the source lead inductive drop to produce a rectangular drive voltage waveform at the internal gate-source terminals of the MOSFET. 2 figs.

  11. Switching Stabilization and l2 Gain Performance Controller Synthesis for Discrete-Time Switched Linear Systems

    E-Print Network [OSTI]

    Antsaklis, Panos

    Switching Stabilization and l2 Gain Performance Controller Synthesis for Discrete-Time Switched Linear Systems Hai Lin and Panos J. Antsaklis Abstract-- In this paper, the switching controller synthesis problem for a class of discrete-time switched linear systems is considered. In particular, a state

  12. Generalized switching signals for input-to-state stability of switched systems

    E-Print Network [OSTI]

    Liberzon, Daniel

    Generalized switching signals for input-to-state stability of switched systems Atreyee Kundu-time switched nonlinear systems. Given a family of systems with exogenous inputs such that not all systems in the family are ISS, we characterize a new and general class of switching signals under which the resulting

  13. Switch for serial or parallel communication networks

    DOE Patents [OSTI]

    Crosette, D.B.

    1994-07-19

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

  14. DNA Nanomechanical Switches under Folding Kinetics Control

    E-Print Network [OSTI]

    Meller, Amit

    DNA Nanomechanical Switches under Folding Kinetics Control Virgile Viasnoff,, Amit Meller operate at equilibrium under changes in solution composition. We propose an alternative DNA switch design after heat denaturation drives the switch to its lowest energy conformation, while rapid cooling (>100

  15. Technical Report On Buffered Clos Switches

    E-Print Network [OSTI]

    Technical Report On Buffered Clos Switches Santosh Krishnan Henning G. Schulzrinne Department There is a widespread interest in switching architectures that can scale in capacity with increasing interface transmission rates and higher port counts. Furthermore, packet switches that provide Quality of Service (Qo

  16. Asynchronous vs Synchronous Input-Queued Switches

    E-Print Network [OSTI]

    1 Asynchronous vs Synchronous Input-Queued Switches Andrea Bianco, Davide Cuda, Paolo Giaccone Dipartimento di Elettronica, Politecnico di Torino (Italy) 3 Abstract--Input-queued (IQ) switches are one of the reference archi- tectures for the design of high-speed packet switches. Classical results in this field

  17. Asynchronous vs Synchronous Input-Queued Switches

    E-Print Network [OSTI]

    Asynchronous vs Synchronous Input-Queued Switches Andrea Bianco, Davide Cuda, Paolo Giaccone, Fabio Neri Dipartimento di Elettronica, Politecnico di Torino (Italy) Abstract--Input-queued (IQ) switches are one of the reference architectures for the design of high-speed packet switches. Clas- sical results

  18. Switch for serial or parallel communication networks

    DOE Patents [OSTI]

    Crosette, Dario B. (DeSoto, TX)

    1994-01-01

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

  19. BROADBAND LOW ACTUATIONVOLTAGE RF'MEM SWITCHES

    E-Print Network [OSTI]

    Shen, Shyh-Chiang

    (RF) Microelectromechanical (MEM) switches have been thought of as one of the most attractive devicesBROADBAND LOW ACTUATIONVOLTAGE RF'MEM SWITCHES Shyh-ChiangShen,David Caruth, and Milton Feng of Illinois at Urbana-Champaign,IL61801-2355 ABSTRACT- We demonstrate a sub-lovolts RF MEM switch built

  20. Electronic logic to enhance switch reliability in detecting openings and closures of redundant switches

    DOE Patents [OSTI]

    Cooper, James A. (Albuquerque, NM)

    1986-01-01

    A logic circuit is used to enhance redundant switch reliability. Two or more switches are monitored for logical high or low output. The output for the logic circuit produces a redundant and failsafe representation of the switch outputs. When both switch outputs are high, the output is high. Similarly, when both switch outputs are low, the logic circuit's output is low. When the output states of the two switches do not agree, the circuit resolves the conflict by memorizing the last output state which both switches were simultaneously in and produces the logical complement of this output state. Thus, the logic circuit of the present invention allows the redundant switches to be treated as if they were in parallel when the switches are open and as if they were in series when the switches are closed. A failsafe system having maximum reliability is thereby produced.

  1. Deep-space and near-Earth optical communications by coded orbital angular

    E-Print Network [OSTI]

    Djordjevic, Ivan B.

    Deep-space and near-Earth optical communications by coded orbital angular momentum (OAM) modulation in pulse-position modulation (PPM), typically used in deep-space applications, is needed, which imposes-bandwidth requirements of future deep-space and near-Earth optical communications. The main challenge for OAM deep- space

  2. Compiling Codes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibilitydefault SignEnvironmentAprilCompilerCompiling Codes

  3. Advanced Soft Switching Inverter for Reducing Switching and Power Losses

    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 Research at NREL Advanced Petroleum BasedAdvanced Soft Switching

  4. Secure videoconferencing equipment switching system and method

    DOE Patents [OSTI]

    Hansen, Michael E. (Livermore, CA)

    2009-01-13

    A switching system and method are provided to facilitate use of videoconference facilities over a plurality of security levels. The system includes a switch coupled to a plurality of codecs and communication networks. Audio/Visual peripheral components are connected to the switch. The switch couples control and data signals between the Audio/Visual peripheral components and one but nor both of the plurality of codecs. The switch additionally couples communication networks of the appropriate security level to each of the codecs. In this manner, a videoconferencing facility is provided for use on both secure and non-secure networks.

  5. CURRICULUM CODE 308 DEGREE CODE _40

    E-Print Network [OSTI]

    Qiu, Weigang

    CURRICULUM CODE 308 DEGREE CODE _40 Hunter College of the City University of New York - Office Print) E-mail address OES Stamp THIS AUDIT IS NOT OFFICIAL UNTIL APPROVED BY THE OFFICE OF THE REGISTRAR Specialization Section #12;CURRICULUM CODE_308_ DEGREE CODE _40__ Course Prefix & Number Course Title Credits

  6. Shape and Material Optimization for Bandwidth Improvement of Printed Antennas on High Contrast Substrates

    E-Print Network [OSTI]

    Sendur, Gullu Kiziltas

    Shape and Material Optimization for Bandwidth Improvement of Printed Antennas on High Contrast shape and material optimization technique is proposed to develop a miniature patch antenna having a dielectric constant of r =100. Keywords : Topology Optimization, Material Design, Patch Antenna

  7. Analyzing Data Movements and Identifying Techniques for Next-generation High-bandwidth Networks

    E-Print Network [OSTI]

    Balman, Mehmet

    2014-01-01

    compared it with GridFTP in the ANI 100Gbps demo at SC11. Innetwork-bandwidth. In the ANI (Advanced Network Initiative)83Gbps total throughput in the ANI 100Gbps connection from

  8. Output Feedback Control and Optimal Bandwidth Allocation of Networked Control Systems 

    E-Print Network [OSTI]

    Dong, Jiawei

    2013-04-12

    A networked control system (NCS) is a control system where sensors, actuators, and controllers are interconnected over a communication network. This dissertation presents a framework for modeling, stability analysis, optimal control, and bandwidth...

  9. Design of low-voltage, high-bandwidth radio frequency power converters

    E-Print Network [OSTI]

    Hu, Jingying, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    The mass and volume required for power electronics circuitry is a dominant obstacle to the miniaturization and integration of many systems. Likewise, power electronics with greater bandwidth and efficiency are becoming ...

  10. EigenSpeed: Secure Peer-to-peer Bandwidth Evaluation Robin Snader

    E-Print Network [OSTI]

    Borisov, Nikita

    . of Electrical & Computer Engineering University of Illinois at Urbana­Champaign Abstract Many peer to mali- cious nodes, and introduce modifications that exploit the specifics of the bandwidth estimation

  11. High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator

    E-Print Network [OSTI]

    Montesanti, Richard Clement

    2005-01-01

    This thesis describes the development of two high bandwidth short-stroke rotary fast tool servos and the hybrid rotary/linear electromagnetic actuator developed for one of them. Design insights, trade-off methodologies, ...

  12. Congestion control schemes for single and parallel TCP flows in high bandwidth-delay product networks 

    E-Print Network [OSTI]

    Cho, Soohyun

    2006-08-16

    In this work, we focus on congestion control mechanisms in Transmission Control Protocol (TCP) for emerging very-high bandwidth-delay product networks and suggest several congestion control schemes for parallel and single-flow ...

  13. Large aperture optical switching devices

    SciTech Connect (OSTI)

    Goldhar, J.; Henesian, M.A.

    1983-12-12

    We have developed a new approach to constructing large aperture optical switches for next generation inertial confinement fusion lasers. A transparent plasma electrode formed in low pressure ionized gas acts as a conductive coating to allow the uniform charging of the optical faces of an electro-optic material. In this manner large electric fields can be applied longitudinally to large aperture, high aspect ratio Pockels cells. We propose a four-electrode geometry to create the necessary high conductivity plasma sheets, and have demonstrated fast (less than 10 nsec) switching in a 5x5 cm aperture KD*P Pockels cell with such a design. Detaid modelling of Pockels cell performance with plasma electrodes has been carried out for 15 and 30 cm aperture designs.

  14. Tuning gain and bandwidth of traveling wave tubes using metamaterial beam-wave interaction structures

    SciTech Connect (OSTI)

    Lipton, Robert Polizzi, Anthony

    2014-10-14

    We employ metamaterial beam-wave interaction structures for tuning the gain and bandwidth of short traveling wave tubes. The interaction structures are made from metal rings of uniform cross section, which are periodically deployed along the length of the traveling wave tube. The aspect ratio of the ring cross sections is adjusted to control both gain and bandwidth. The frequency of operation is controlled by the filling fraction of the ring cross section with respect to the size of the period cell.

  15. Switch for Good Community Program

    SciTech Connect (OSTI)

    Crawford, Tabitha; Amran, Martha

    2013-11-19

    Switch4Good is an energy-savings program that helps residents reduce consumption from behavior changes; it was co-developed by Balfour Beatty Military Housing Management (BB) and WattzOn in Phase I of this grant. The program was offered at 11 Navy bases. Three customer engagement strategies were evaluated, and it was found that Digital Nudges (a combination of monthly consumption statements with frequent messaging via text or email) was most cost-effective.

  16. Fast superconducting magnetic field switch

    DOE Patents [OSTI]

    Goren, Y.; Mahale, N.K.

    1996-08-06

    The superconducting magnetic switch or fast kicker magnet is employed with electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater that the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles. 6 figs.

  17. Fast superconducting magnetic field switch

    DOE Patents [OSTI]

    Goren, Yehuda (Mountain View, CA); Mahale, Narayan K. (The Woodlands, TX)

    1996-01-01

    The superconducting magnetic switch or fast kicker magnet is employed with electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater that the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles.

  18. Stable nonlinear Mach-Zehnder fiber switch

    DOE Patents [OSTI]

    Digonnet, Michel J. F. (Palo Alto, CA); Shaw, H. John (Palo Alto, CA); Pantell, Richard H. (Menlo Park, CA); Sadowski, Robert W. (Camp Doha, KW)

    1999-01-01

    An all-optical fiber switch is implemented within a short Mach-Zehnder interferometer configuration. The Mach-Zehnder switch is constructed to have a high temperature stability so as to minimize temperature gradients and other thermal effects which result in undesirable instability at the output of the switch. The Mach-Zehnder switch of the preferred embodiment is advantageously less than 2 cm in length between couplers to be sufficiently short to be thermally stable, and full switching is accomplished by heavily doping one or both of the arms between the couplers so as to provide a highly nonlinear region within one or both of the arms. A pump input source is used to affect the propagation characteristics of one of the arms to control the output coupling ratio of the switch. Because of the high nonlinearity of the pump input arm, low pump powers can be used, thereby alleviating difficulties and high cost associated with high pump input powers.

  19. Verification of the gain switching threshold

    E-Print Network [OSTI]

    Sopková, Filoména

    2015-01-01

    Using the fit of the ramps from special calibration runs preliminary values of switching thresholds have been computed and compared with those in the data base.

  20. Magnetic switch coupling to synchronize magnetic modulators

    DOE Patents [OSTI]

    Reed, Kim W. (Albuquerque, NM); Kiekel, Paul (Albuquerque, NM)

    1999-01-01

    Apparatus for synchronizing the output pulses from a pair of magnetic switches. An electrically conductive loop is provided between the pair of switches with the loop having windlings about the core of each of the magnetic switches. The magnetic coupling created by the loop removes voltage and timing variations between the outputs of the two magnetic switches caused by any of a variety of factors. The only remaining variation is a very small fixed timing offset caused by the geometry and length of the loop itself.

  1. Magnetic switch coupling to synchronize magnetic modulators

    DOE Patents [OSTI]

    Reed, K.W.; Kiekel, P.

    1999-04-27

    Apparatus for synchronizing the output pulses from a pair of magnetic switches is disclosed. An electrically conductive loop is provided between the pair of switches with the loop having windings about the core of each of the magnetic switches. The magnetic coupling created by the loop removes voltage and timing variations between the outputs of the two magnetic switches caused by any of a variety of factors. The only remaining variation is a very small fixed timing offset caused by the geometry and length of the loop itself. 13 figs.

  2. Multi-megavolt low jitter multistage switch

    DOE Patents [OSTI]

    Humphreys, D.R.; Penn, K.J. Jr.

    1985-06-19

    It is one object of the present invention to provide a multistage switch capable of holding off numerous megavolts, until triggered, from a particle beam accelerator of the type used for inertial confinement fusion. The invention provides a multistage switch having low timing jitter and capable of producing multiple spark channels for spreading current over a wider area to reduce electrode damage and increase switch lifetime. The switch has fairly uniform electric fields and a short spark gap for laser triggering and is engineered to prevent insulator breakdowns.

  3. Laser-triggered vacuum switch

    DOE Patents [OSTI]

    Brannon, P.J.; Cowgill, D.F.

    1990-12-18

    A laser-triggered vacuum switch has a material such as a alkali metal halide on the cathode electrode for thermally activated field emission of electrons and ions upon interaction with a laser beam, the material being in contact with the cathode with a surface facing the discharge gap. The material is preferably a mixture of KCl and Ti powders. The laser may either shine directly on the material, preferably through a hole in the anode, or be directed to the material over a fiber optic cable. 10 figs.

  4. Multiprocessor switch with selective pairing

    DOE Patents [OSTI]

    Gara, Alan; Gschwind, Michael K; Salapura, Valentina

    2014-03-11

    System, method and computer program product for a multiprocessing system to offer selective pairing of processor cores for increased processing reliability. A selective pairing facility is provided that selectively connects, i.e., pairs, multiple microprocessor or processor cores to provide one highly reliable thread (or thread group). Each paired microprocessor or processor cores that provide one highly reliable thread for high-reliability connect with a system components such as a memory "nest" (or memory hierarchy), an optional system controller, and optional interrupt controller, optional I/O or peripheral devices, etc. The memory nest is attached to a selective pairing facility via a switch or a bus

  5. Building Energy Code

    Broader source: Energy.gov [DOE]

    Tennessee is a "home rule" state which leaves adoption of codes up to the local codes jurisdictions. State energy codes are passed through the legislature, apply to all construction and must be...

  6. Quantum convolutional stabilizer codes 

    E-Print Network [OSTI]

    Chinthamani, Neelima

    2004-09-30

    Quantum error correction codes were introduced as a means to protect quantum information from decoherance and operational errors. Based on their approach to error control, error correcting codes can be divided into two different classes: block codes...

  7. Building Energy Code

    Broader source: Energy.gov [DOE]

    In 2009 S.B. 1182 created the Oklahoma Uniform Building Code Commission. The 11-member Commission was given the power to conduct rulemaking processes to adopt new building codes. The codes adopted...

  8. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Kentucky Building Code (KBC) is updated every three years on a cycle one year behind the publication year for the International Building Code. Any changes to the code by the state of Kentucky...

  9. Building Energy Code

    Broader source: Energy.gov [DOE]

    The State Building Code Council revised the Washington State Energy Code (WESC) in February 2013, effective July 1, 2013. The WESC is a state-developed code based upon ASHRAE 90.1-2010 and the...

  10. Building Energy Code

    Broader source: Energy.gov [DOE]

    Mississippi's existing state code is based on the 1977 Model Code for Energy Conservation (MCEC). The existing law does not mandate enforcement by localities, and any revised code will probably...

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

    E-Print Network [OSTI]

    Patel, Chirag D.; Patel, Chirag D.

    2012-01-01

    design, devel- oped for medium- power applications (5-10 W), was also used to implement compact switching

  12. Software-Hardware Co-Defined Network Switch (SHADES) for a Label Switching Protocol

    E-Print Network [OSTI]

    Karadeniz, Turhan

    2015-01-01

    Kazemian, Mart Haitjema, Neda Beheshti, Stephen Stuart, andQueued Switch. 2000. [70] Neda Beheshti, Yashar Ganjali,

  13. Low-voltage, low-power, low switching error, class-AB switched current

    E-Print Network [OSTI]

    Serdijn, Wouter A.

    Low-voltage, low-power, low switching error, class-AB switched current memory cell C. Sawigun and W into two components by a low-voltage class-AB current splitter and subsequently processes the individual signals by two low switching error class-A memory cells. As a conse- quence, the output current obtained

  14. New Optical Switching Fabric Architecture Incorporating Load Balanced Parallel Rapidly Switching All-Optical

    E-Print Network [OSTI]

    Kolner, Brian H.

    New Optical Switching Fabric Architecture Incorporating Load Balanced Parallel Rapidly Switching All-Optical Variable Delay Buffer Arrays Haijun Yang and S. J. Ben Yoo Department of Electrical-8428 Email: yoo@ece.ucdavis.edu Abstract: We propose a novel optical switching fabric architecture employing

  15. BER Performance in Wavelength Packet Switched WDM systems during Nano-second Wavelength Switching Events

    E-Print Network [OSTI]

    Murphy, John

    . This effect may ultimately influence the design of WDM wavelength packet- switched networks employing transmitter, as the overall design of the wavelength packet-switched WDM networks will be heavily dependent-mode suppression ratio (SMSR), the output power, and the speed at which the device can switch from one wavelength

  16. it is seen that there is an enhancement in the bandwidths of f1 over f2 and RA. The bandwidth of f1 is found to be increased by 4.2

    E-Print Network [OSTI]

    Masoudi, Husain M.

    it is seen that there is an enhancement in the bandwidths of f1 over f2 and RA. The bandwidth of f1 of the bandwidth is due to stacking configuration. A measured VSWR for f1 is 1.602 and f2 is 1.585 is obtained. The input impedance measured for f1 is 45.65 j22.68 and for f2 it is 33.45 j9.239. Typical coplanar patterns

  17. Building Energy Code

    Broader source: Energy.gov [DOE]

    The West Virginia State Fire Commission is responsible for adopting and promulgating statewide construction codes. These codes may be voluntarily adopted at the local level. Local jurisdictions...

  18. Building Energy Code

    Broader source: Energy.gov [DOE]

    The North Carolina State Building Code Council is responsible for developing all state codes. By statute, the Commissioner of Insurance has general supervision over the administration and...

  19. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Rhode Island Building Code Standards Committee adopts, promulgates and administers the state building code. Compliance is determined through the building permit and inspection process by local...

  20. Bandwidth and rate allocation tradeoffs of source : channel coding, packetization and modulation in unequally protected multimedia communication systems

    E-Print Network [OSTI]

    Arslan, Suayb S.

    2012-01-01

    in Electrical Engineering (Communication Theory and Systems)B. S. in Electrical Engineering (Communication Theory andM. S. in in Electrical Engineering (Communication Theory and

  1. ISS of Switched Systems and Applications to Switching Adaptive Control L. Vu and D. Chatterjee and D. Liberzon

    E-Print Network [OSTI]

    Liberzon, Daniel

    ISS of Switched Systems and Applications to Switching Adaptive Control L. Vu and D. Chatterjee that a switched nonlinear system has several useful ISS-type properties under average dwell-time switching signals if each constituent dynamical system is ISS. This extends available results for switched linear systems

  2. Federal Register / Vol. 52, No. 90 / Monday, May 11. 1987 / Rules and Regulations switches, electronic switches, remote

    E-Print Network [OSTI]

    Federal Register / Vol. 52, No. 90 / Monday, May 11. 1987 / Rules and Regulations switches, electronic switches, remote control switches, and receivers with built-in switches; (6) Identify); (7) Indicate that questions related to input selector switches should be directed to a specified

  3. Chair for Computer Networks and Internet -Universitt Tbingen 1 ffor an open source, ultra low delay audio coding

    E-Print Network [OSTI]

    Carle, Georg

    an open source, ultra low delay audio coding Extending the packet loss concealment algorithm ITU G 711 A di 1 t f ll b d idthITU G.711 Appendix 1 to full bandwidth Comparing ultra low delay audio codecs SSummary Chair for Computer Networks and Internet - Universität Tübingen 2 #12;From speech to ultra-low

  4. Local intelligent electronic device (IED) rendering templates over limited bandwidth communication link to manage remote IED

    DOE Patents [OSTI]

    Bradetich, Ryan; Dearien, Jason A; Grussling, Barry Jakob; Remaley, Gavin

    2013-11-05

    The present disclosure provides systems and methods for remote device management. According to various embodiments, a local intelligent electronic device (IED) may be in communication with a remote IED via a limited bandwidth communication link, such as a serial link. The limited bandwidth communication link may not support traditional remote management interfaces. According to one embodiment, a local IED may present an operator with a management interface for a remote IED by rendering locally stored templates. The local IED may render the locally stored templates using sparse data obtained from the remote IED. According to various embodiments, the management interface may be a web client interface and/or an HTML interface. The bandwidth required to present a remote management interface may be significantly reduced by rendering locally stored templates rather than requesting an entire management interface from the remote IED. According to various embodiments, an IED may comprise an encryption transceiver.

  5. Experimental and Simulation Study of Resistive Switches for Memory Applications

    E-Print Network [OSTI]

    Pan, Feng

    2012-01-01

    2 O 5 solid-electrolyte switch with improved reliability,”Quantized conductance atomic switch,” Nature, vol.433, 2005,A Ta2O5 solidelectrolyte switch with improved reliability,”

  6. Asynchronous SAN Switching under Multicast Traffic

    E-Print Network [OSTI]

    Asynchronous SAN Switching under Multicast Traffic Andrea Bianco *, Luca Giraudo *, Alessandra-Multicast traffic in Storage Area Networks (SANs) enables applications such as disaster recovery, remote data-less switching architecture devised for SANs is described, and its performance under multicast traffic is studied

  7. Ames Lab 101: Ultrafast Magnetic Switching

    ScienceCinema (OSTI)

    Jigang Wang

    2013-06-05

    Ames Laboratory physicists have found a new way to switch magnetism that is at least 1000 times faster than currently used in magnetic memory technologies. Magnetic switching is used to encode information in hard drives, magnetic random access memory and other computing devices. The discovery potentially opens the door to terahertz and faster memory speeds.

  8. Gas mixtures for spark gap closing switches

    DOE Patents [OSTI]

    Christophorou, Loucas G. (Oak Ridge, TN); McCorkle, Dennis L. (Knoxville, TN); Hunter, Scott R. (Oak Ridge, TN)

    1988-01-01

    Gas mixtures for use in spark gap closing switches comprised of fluorocarbons and low molecular weight, inert buffer gases. To this can be added a third gas having a low ionization potential relative to the buffer gas. The gas mixtures presented possess properties that optimized the efficiency spark gap closing switches.

  9. Gas mixtures for spark gap closing switches

    DOE Patents [OSTI]

    Christophorou, L.G.; McCorkle, D.L.; Hunter, S.R.

    1987-02-20

    Gas mixtures for use in spark gap closing switches comprised of fluorocarbons and low molecular weight, inert buffer gases. To this can be added a third gas having a low ionization potential relative to the buffer gas. The gas mixtures presented possess properties that optimized the efficiency spark gap closing switches. 6 figs.

  10. General Impedance Synthesis Using Simple Switching Converters

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    -frequency storage element and a pair of switches, such as the buck, buck-boost and boost converters, as shown in FigGeneral Impedance Synthesis Using Simple Switching Converters Joe C. P. Liu, Chi K. Tse, Franki N converters is studied in this paper. We begin with showing that any impedance can be synthesized by a circuit

  11. Complex Behavior in Switching Power Converters

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    Complex Behavior in Switching Power Converters CHI K. TSE, SENIOR MEMBER, IEEE, AND MARIO DI--Bifurcation, chaos, dc­dc converters, nonlinear dy- namics, power electronics, switching power converters. I power devices, control methods, circuit design, computer-aided analysis, passive components, packaging

  12. 3D Recursive Gaussian IIR on GPUs and FPGAs A Case Study for Accelerating Bandwidth-Bounded Applications

    E-Print Network [OSTI]

    Cong, Jason "Jingsheng"

    a very high off-chip memory bandwidth. For example, the Nvidia Telsa compute cards C1060 has 102GB/s peak

  13. Tri-material multilayer coatings with high reflectivity and wide bandwidth for 25 to 50 nm extreme ultraviolet light

    E-Print Network [OSTI]

    Aquila, Andrew

    2010-01-01

    and testing ofEUV multilayer coatings for the AtmosphericTri-material multilayer coatings with high reflectivity andthe bandwidth of multilayer coatings. The simplest method to

  14. Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides

    E-Print Network [OSTI]

    K. Thyagarajan; R. Das; O. Alibart; M. de Micheli; D. B. Ostrowsky; S. Tanzilli

    2009-04-11

    In this paper we show that by suitably tailoring the dispersion characteristics of a Bragg reflection waveguide (BRW) mode, it is possible to achieve efficient photon pair generation over a large pump bandwidth while maintaining narrow signal bandwidth. The structure proposed consists of a high index core BRW with a periodically poled GaN core and periodically stratified cladding made up of alternate layers of $Al_{0.02}Ga_{0.98}N$ and $Al_{0.45}Ga_{0.55}N$. Such photon-pair generators should find applications in realizing compact and stable sources for quantum information processing.

  15. Seismic switch for strong motion measurement

    DOE Patents [OSTI]

    Harben, Philip E. (Oakley, CA); Rodgers, Peter W. (Santa Barbara, CA); Ewert, Daniel W. (Patterson, CA)

    1995-01-01

    A seismic switching device that has an input signal from an existing microseismic station seismometer and a signal from a strong motion measuring instrument. The seismic switch monitors the signal level of the strong motion instrument and passes the seismometer signal to the station data telemetry and recording systems. When the strong motion instrument signal level exceeds a user set threshold level, the seismometer signal is switched out and the strong motion signal is passed to the telemetry system. The amount of time the strong motion signal is passed before switching back to the seismometer signal is user controlled between 1 and 15 seconds. If the threshold level is exceeded during a switch time period, the length of time is extended from that instant by one user set time period.

  16. Seismic switch for strong motion measurement

    DOE Patents [OSTI]

    Harben, P.E.; Rodgers, P.W.; Ewert, D.W.

    1995-05-30

    A seismic switching device is described that has an input signal from an existing microseismic station seismometer and a signal from a strong motion measuring instrument. The seismic switch monitors the signal level of the strong motion instrument and passes the seismometer signal to the station data telemetry and recording systems. When the strong motion instrument signal level exceeds a user set threshold level, the seismometer signal is switched out and the strong motion signal is passed to the telemetry system. The amount of time the strong motion signal is passed before switching back to the seismometer signal is user controlled between 1 and 15 seconds. If the threshold level is exceeded during a switch time period, the length of time is extended from that instant by one user set time period. 11 figs.

  17. Length Scale of Leidenfrost Ratchet Switches Droplet Directionality...

    Office of Scientific and Technical Information (OSTI)

    Length Scale of Leidenfrost Ratchet Switches Droplet Directionality Citation Details In-Document Search Title: Length Scale of Leidenfrost Ratchet Switches Droplet Directionality...

  18. Guest Molecule Induced Switching of Electrical Conduction in...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Guest Molecule Induced Switching of Electrical Conduction in a Metal-Organic Framework. Citation Details In-Document Search Title: Guest Molecule Induced Switching...

  19. Robust metal contact and capacitive mini-MEMS switches

    E-Print Network [OSTI]

    Sedaghat Pisheh, Hojr

    2013-01-01

    Mini-MEMS MechanicalSpring Constant, High Contact Force RF MEMS Switch 3.1First Generation of Miniature MEMS Capacitive Switch . . 4.3

  20. SEP Success Story: Louisiana Company Makes Switch to CNG, Helps...

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

    SEP Success Story: Louisiana Company Makes Switch to CNG, Helps Transform Local Fuel Supplies SEP Success Story: Louisiana Company Makes Switch to CNG, Helps Transform Local Fuel...

  1. Modeling Combustion Control for High Power Diesel Mode Switching...

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

    Combustion Control for High Power Diesel Mode Switching Modeling Combustion Control for High Power Diesel Mode Switching Poster presentation given at the 16th Directions in...

  2. Performing aggressive code optimization with an ability to rollback changes made by the aggressive optimizations

    DOE Patents [OSTI]

    Gschwind, Michael K

    2013-07-23

    Mechanisms for aggressively optimizing computer code are provided. With these mechanisms, a compiler determines an optimization to apply to a portion of source code and determines if the optimization as applied to the portion of source code will result in unsafe optimized code that introduces a new source of exceptions being generated by the optimized code. In response to a determination that the optimization is an unsafe optimization, the compiler generates an aggressively compiled code version, in which the unsafe optimization is applied, and a conservatively compiled code version in which the unsafe optimization is not applied. The compiler stores both versions and provides them for execution. Mechanisms are provided for switching between these versions during execution in the event of a failure of the aggressively compiled code version. Moreover, predictive mechanisms are provided for predicting whether such a failure is likely.

  3. Identification of Hybrid Dynamical Models of Human Movement via Switched System Optimal Control

    E-Print Network [OSTI]

    Vasudevan, Ramanarayan

    2012-01-01

    of constrained nonlinear switched dynamical systems. Inconstrained nonlinear switched dynamical systems is devised.

  4. Flexible-Bandwidth Power-Aware Optical Interconnects with Source Synchronous Technique

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    @ucdavis.edu, sbyoo@ucdavis.edu Abstract: This paper investigates energy savings in data centers with flexible-bandwidth power- aware source-synchronous optical interconnects. Network simulations show 5× energy savings. Link-PA source synchronous link and investigate the energy saving for a fat-tree network. Finally we report

  5. LIMITING THE CLIENT BANDWIDTH OF BROADCASTING PROTOCOLS FOR VIDEOS ON DEMAND

    E-Print Network [OSTI]

    Pâris, Jehan-François

    LIMITING THE CLIENT BANDWIDTH OF BROADCASTING PROTOCOLS FOR VIDEOS ON DEMAND Jehan­François Pâris 1 was supported by the National Science Foundation under grant PO­10152754. KEYWORDS video­on­demand, broadcasting of video­on­ demand services by more efficiently distributing all videos that are simultaneously watched

  6. Higher-order effects in bandwidth-limited soliton propagation in optical fibers

    SciTech Connect (OSTI)

    Aceves, A.B.; De Angelis, C. ); Nalesso, G.; Santagiustina, M. )

    1994-12-15

    By means of numerical studies and soliton perturbation theory we examine the effects of higher-order linear and nonlinear terms in bandwidth-limited amplified soliton propagation. We show that these effects are responsible for strong reductions of soliton--soliton interaction in such systems.

  7. Wide-Bandwidth, Tunable, Multiple-Pulse-Width Optical Delays Using Slow Light in Cesium Vapor

    E-Print Network [OSTI]

    Boyd, Robert W.

    Wide-Bandwidth, Tunable, Multiple-Pulse-Width Optical Delays Using Slow Light in Cesium Vapor Ryan) We demonstrate an all-optical delay line in hot cesium vapor that tunably delays 275 ps input pulses to 80 pulse widths by making use of a double absorption reso- nance in cesium. Furthermore, we show

  8. JOURNAL ARTICLES Solomon, J., Kumar, R. and Alvi, F. S. "High Bandwidth Pulsed Microactuators for

    E-Print Network [OSTI]

    JOURNAL ARTICLES Solomon, J., Kumar, R. and Alvi, F. S. "High Bandwidth Pulsed Microactuators for High Speed Flow Control," AIAA Journal , Vol. 48, No. 10, pp. 2386-2396, October 2010. Venkatkrishnan with Microjet Control," to appear in the AIAA Journal, accepted, anticipated publication, early Spring 2011

  9. IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997 861 Virtual Path Bandwidth

    E-Print Network [OSTI]

    Columbia University

    IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997 861 Virtual Path Bandwidth Allocation in Multiuser Networks Aurel A. Lazar, Fellow, IEEE, Ariel Orda, Senior Member, IEEE, and Dimitrios E. Pendarakis, Member, IEEE Abstract-- We consider a multiuser network that is shared

  10. BreezChirp: Energy Efficient Wi-Fi Bandwidth Estimator for Smartphones

    E-Print Network [OSTI]

    Boutaba, Raouf

    Center) support program supervised by the NIPA(National IT Industry Promotion Agency) (NIPA-2013-H0301BreezChirp: Energy Efficient Wi-Fi Bandwidth Estimator for Smartphones Jian Li, Jin Xiao, Huu Nhat Science, University of Waterloo, Canada email: rboutaba@cs.uwaterloo.ca Faculty of Computer Science

  11. Design of a Wide Bandwidth Continuous-time Low-pass Sigma-delta Modulator 

    E-Print Network [OSTI]

    Chien, Cheng-Ming

    2012-02-14

    The emergence of bandwidth-intensive services has created a need for high speed and high resolution data converters. Towards this end, system level design of a continuous-time sigma-delta modulator achieving 11 bits resolution over 100 MHz signal...

  12. Time-Based Storage Bandwidth Allocation in Hybrid Storage Systems Rice University

    E-Print Network [OSTI]

    Time-Based Storage Bandwidth Allocation in Hybrid Storage Systems Hui Wang Rice University Peter for a hybrid storage system made up of both HDs and SSDs. To continue the example, suppose the HD has slicing treats the storage system as a black box and dedicates the system to a client for its time slice

  13. Kernel Completion for Learning Consensus Support Vector Machines in Bandwidth-Limited Sensor Networks

    E-Print Network [OSTI]

    Morik, Katharina

    developments in sensor technology allows for capturing dynamic patterns in vehicle movements, tem- perature- lection becomes challenging when communication bandwidth is limited, due to communication distance or low-energy. In this paper, we propose an alternative strategy for such scenarios, aiming to build a consensus support vector

  14. A Bandwidth Friendly Search Engine Clare Bradford and Ian.W.Marshall

    E-Print Network [OSTI]

    Marshall, Ian W.

    the simple search terms preferred by users. Should search engine developers create bigger indexes to giveA Bandwidth Friendly Search Engine Clare Bradford and Ian.W.Marshall BT Labs, Martlesham Heath locating web content is becoming increasingly difficult for users, and search traffic from users

  15. Performance of a High-Concentration Erbium-Doped Fiber Amplifier with 100 nm Amplification Bandwidth

    SciTech Connect (OSTI)

    Hajireza, P.; Shahabuddin, N. S.; Abbasi-Zargaleh, S.; Emami, S. D.; Abdul-Rashid, H. A.; Yusoff, Z. [Center for Advanced Devices and Systems, Faculty of Engineering, Multimedia University, 63100 Cyberjaya (Malaysia)

    2010-07-07

    Increasing demand for higher bandwidth has driven the need for higher Wavelength Division Multiplexing (WDM) channels. One of the requirements to achieve this is a broadband amplifier. This paper reports the performance of a broadband, compact, high-concentration and silica-based erbium-doped fiber amplifier. The amplifier optimized to a 2.15 m long erbium-doped fiber with erbium ion concentration of 2000 ppm. The gain spectrum of the amplifier has a measured amplification bandwidth of 100 nm using a 980 nm laser diode with power of 150 mW. This silica-based EDFA shows lower noise figure, higher gain and wider bandwidth in shorter wavelengths compared to Bismuth-based EDFA with higher erbium ion concentration of 3250 ppm at equivalent EDF length. The silica-based EDF shows peak gain at 22 dB and amplification bandwidth between 1520 nm and 1620 nm. The lowest noise figure is 5 dB. The gain is further improved with the implementation of enhanced EDFA configurations.

  16. Picosecond flat-top pulse generation by low-bandwidth electro-optic sinusoidal

    E-Print Network [OSTI]

    Fischer, Baruch

    Picosecond flat-top pulse generation by low-bandwidth electro-optic sinusoidal phase modulation Naum K. Berger,1,3 Boris Levit,1 Baruch Fischer,1 and José Azańa2,4 1 Department of Electrical at a repetition rate of 18.22 GHz, each with a FWHM time width of 25 ps, is generated from a sinusoidal RF tone

  17. Adhesion of membranes via actively switched receptors

    E-Print Network [OSTI]

    Bartosz Rozycki; Reinhard Lipowsky; Thomas R. Weikl

    2005-12-20

    We consider a theoretical model for membranes with adhesive receptors, or stickers, that are actively switched between two conformational states. In their 'on'-state, the stickers bind to ligands in an apposing membrane, whereas they do not interact with the ligands in their 'off'-state. We show that the adhesiveness of the membranes depends sensitively on the rates of the conformational switching process. This dependence is reflected in a resonance at intermediate switching rates, which can lead to large membrane separations and unbinding. Our results may provide insights into novel mechanisms for the controlled adhesion of biological or biomimetic membranes.

  18. 1652 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 11, JUNE 1, 2010 Large Time-Bandwidth Product Microwave Arbitrary

    E-Print Network [OSTI]

    Yao, Jianping

    Microwave Arbitrary Waveform Generation Using a Spatially Discrete Chirped Fiber Bragg Grating Chao Wang and experimentally demonstrate an approach to generating large time-bandwidth product (TBWP) microwave arbitrary of a bandwidth-limited photodetector (PD), a smooth microwave waveform is obtained. The SD-CFBG is fabricated

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

    E-Print Network [OSTI]

    Poovendran, Radha

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

  20. Design of Wavelength Converting Switches for Optical Burst Jeyashankher Ramamirtham and Jonathan Turner

    E-Print Network [OSTI]

    Design of Wavelength Converting Switches for Optical Burst Switching Jeyashankher Ramamirtham Switches for Optical Burst SwitchingŁ Jeyashankher Ramamirtham, Jonathan TurnerÝ Abstract Optical Burst Switching (OBS) is an experimental network technology that enables the construction of very high capacity

  1. Code division multiple access signaling for modulated reflector technology

    DOE Patents [OSTI]

    Briles, Scott D. (Los Alamos, NM)

    2012-05-01

    A method and apparatus for utilizing code division multiple access in modulated reflectance transmissions comprises the steps of generating a phase-modulated reflectance data bit stream; modifying the modulated reflectance data bit stream; providing the modified modulated reflectance data bit stream to a switch that connects an antenna to an infinite impedance in the event a "+1" is to be sent, or connects the antenna to ground in the event a "0" or a "-1" is to be sent.

  2. Unfolding the color code

    E-Print Network [OSTI]

    Aleksander Kubica; Beni Yoshida; Fernando Pastawski

    2015-03-06

    The topological color code and the toric code are two leading candidates for realizing fault-tolerant quantum computation. Here we show that the color code on a $d$-dimensional closed manifold is equivalent to multiple decoupled copies of the $d$-dimensional toric code up to local unitary transformations and adding or removing ancilla qubits. Our result not only generalizes the proven equivalence for $d=2$, but also provides an explicit recipe of how to decouple independent components of the color code, highlighting the importance of colorability in the construction of the code. Moreover, for the $d$-dimensional color code with $d+1$ boundaries of $d+1$ distinct colors, we find that the code is equivalent to multiple copies of the $d$-dimensional toric code which are attached along a $(d-1)$-dimensional boundary. In particular, for $d=2$, we show that the (triangular) color code with boundaries is equivalent to the (folded) toric code with boundaries. We also find that the $d$-dimensional toric code admits logical non-Pauli gates from the $d$-th level of the Clifford hierarchy, and thus saturates the bound by Bravyi and K\\"{o}nig. In particular, we show that the $d$-qubit control-$Z$ logical gate can be fault-tolerantly implemented on the stack of $d$ copies of the toric code by a local unitary transformation.

  3. IEEE INFOCOM 2002 1 Design of Wavelength Converting Switches for

    E-Print Network [OSTI]

    Turner, Jonathan S.

    IEEE INFOCOM 2002 1 Design of Wavelength Converting Switches for Optical Burst Switching Jeyashankher Ramamirtham, Jonathan Turner Abstract-- Optical Burst Switching (OBS) is an experi- mental network- tronic control. In this paper, we study two designs for wave- length converting switches

  4. Reachability and Controllability of Switched Linear Discrete-Time Systems

    E-Print Network [OSTI]

    Duffy, Ken

    the switching laws are design parameters to be chosen online by a supervisor [6, 14, 17]. Switched systems systems and power electronics [15, 10]. Control techniques based on switching between different are the states and inputs, : {0, 1, · · ·} M = {1, 2, · · · , m} is the switching path to be designed, matrix

  5. Coordination and Lock-In: Competition with Switching Costs

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Coordination and Lock-In: Competition with Switching Costs and Network E ects Part II of IV Switching Costs Section December 2004 the latest version of this paper, and related material, will be at www Switching Costs and Competition 2.1 Introduction A consumer faces a switching cost between sellers when

  6. Delayed switching applied to memristor neural networks

    SciTech Connect (OSTI)

    Wang, Frank Z.; Yang Xiao; Lim Guan [Future Computing Group, School of Computing, University of Kent, Canterbury (United Kingdom); Helian Na [School of Computer Science, University of Hertfordshire, Hatfield (United Kingdom); Wu Sining [Xyratex, Havant (United Kingdom); Guo Yike [Department of Computing, Imperial College, London (United Kingdom); Rashid, Md Mamunur [CERN, Geneva (Switzerland)

    2012-04-01

    Magnetic flux and electric charge are linked in a memristor. We reported recently that a memristor has a peculiar effect in which the switching takes place with a time delay because a memristor possesses a certain inertia. This effect was named the ''delayed switching effect.'' In this work, we elaborate on the importance of delayed switching in a brain-like computer using memristor neural networks. The effect is used to control the switching of a memristor synapse between two neurons that fire together (the Hebbian rule). A theoretical formula is found, and the design is verified by a simulation. We have also built an experimental setup consisting of electronic memristive synapses and electronic neurons.

  7. Mercury switch with non-wettable electrodes

    DOE Patents [OSTI]

    Karnowsky, Maurice M. (Albulquerque, NM); Yost, Frederick G. (Carlsbad, NM)

    1987-01-01

    A mercury switch device comprising a pool of mercury and a plurality of electrical contacts made of or coated with a non-wettable material such as titanium diboride.

  8. Switching Quantum Dynamics for Fast Stabilization

    E-Print Network [OSTI]

    Pierre Scaramuzza; Francesco Ticozzi

    2015-04-16

    Control strategies for dissipative preparation of target quantum states, both pure and mixed, and subspaces are obtained by switching between a set of available semigroup generators. We show that the class of problems of interest can be recast, from a control--theoretic perspective, into a switched-stabilization problem for linear dynamics. This is attained by a suitable affine transformation of the coherence-vector representation. In particular, we propose and compare stabilizing time-based and state-based switching rules for entangled state preparation, showing that the latter not only ensure faster convergence with respect to non-switching methods, but can designed so that they retain robustness with respect to initialization, as long as the target is a pure state or a subspace.

  9. The dynamics of enzymatic switch cascades

    E-Print Network [OSTI]

    Mukherji, Shankar, 1982-

    2004-01-01

    We examine the dynamics of the mitogen-activated protein kinase (MAPK) multi-step enzymatic switching cascade, a highly conserved architecture utilised in cellular signal transduction. In treating the equations of motion, ...

  10. Clause chaining, switch reference and coordination

    E-Print Network [OSTI]

    Nonato, Rafael

    2014-01-01

    In this thesis I ponder over a constellation of phenomena that revolve around switch reference and coordination, drawing mainly on their instantiation in Kisedje (Je, Brazil). I start by investigating Klsedje's case system. ...

  11. Electrically Switched Cesium Ion Exchange

    SciTech Connect (OSTI)

    JPH Sukamto; ML Lilga; RK Orth

    1998-10-23

    This report discusses the results of work to develop Electrically Switched Ion Exchange (ESIX) for separations of ions from waste streams relevant to DOE site clean-up. ESIX combines ion exchange and electrochemistry to provide a selective, reversible method for radionuclide separation that lowers costs and minimizes secondary waste generation typically associated with conventional ion exchange. In the ESIX process, an electroactive ion exchange film is deposited onto. a high surface area electrode, and ion uptake and elution are controlled directly by modulating the potential of the film. As a result, the production of secondary waste is minimized, since the large volumes of solution associated with elution, wash, and regeneration cycles typical of standard ion exchange are not needed for the ESIX process. The document is presented in two parts: Part I, the Summary Report, discusses the objectives of the project, describes the ESIX concept and the approach taken, and summarizes the major results; Part II, the Technology Description, provides a technical description of the experimental procedures and in-depth discussions on modeling, case studies, and cost comparisons between ESIX and currently used technologies.

  12. Coding AuthentiCity

    E-Print Network [OSTI]

    Mercier, Rachel Havens

    2008-01-01

    This thesis analyzes the impact of form-based codes, focusing on two research questions: (1) What is the underlying motivation for adopting a form-based code? (2) What motivations have the most significant impact on ...

  13. Building Energy Code

    Broader source: Energy.gov [DOE]

    New Hampshire adopted a mandatory statewide building code in 2002 based on the 2000 IECC. SB 81 was enacted in July 2007, and it upgraded the New Hampshire Energy Code to the 2006 IECC. In...

  14. Building Energy Code

    Broader source: Energy.gov [DOE]

    Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more deta...

  15. Building Energy Code

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Indiana Residential Building Code is based on the 2003 IRC with state amendments (eff. 9/11/05). This code applies to 1 and 2 family dwellings and townhouses. During the adoption process,...

  16. Building Energy Code

    Broader source: Energy.gov [DOE]

    Changes to the energy code are submitted to the Uniform Building Code Commission. The proposed change is reviewed by the Commission at a monthly meeting to decide if it warrants further...

  17. Guam- Building Energy Code

    Broader source: Energy.gov [DOE]

    Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more...

  18. Building Energy Code

    Broader source: Energy.gov [DOE]

    In 2006 Iowa enacted H.F. 2361, requiring the State Building Commissioner to adopt energy conservation requirements based on a nationally recognized building energy code. The State Building Code...

  19. Building Energy Code

    Broader source: Energy.gov [DOE]

    Note: Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more...

  20. Building Energy Code

    Broader source: Energy.gov [DOE]

    Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more...

  1. Building Energy Code

    Broader source: Energy.gov [DOE]

    Prior to 1997, South Carolina's local governments adopted and enforced the building codes. In 1997, the law required statewide use of the most up-to-date building codes, which then required the...

  2. Building Energy Code

    Broader source: Energy.gov [DOE]

    The New Jersey Uniform Construction Code Act provides that model codes and standards publications shall not be adopted more frequently than once every three years. However, a revision or amendment...

  3. Building Energy Code

    Broader source: Energy.gov [DOE]

    The 2012 IECC is in effect for all residential and commercial buildings, Idaho schools, and Idaho jurisdictions that adopt and enforce building codes, unless a local code exists that is more...

  4. Building Energy Code

    Broader source: Energy.gov [DOE]

    Delaware Energy Code is reviewed by Delaware Energy Office every three years for potential updates to the most recent version of International Energy Conservation Code (IECC) and ASHRAE Standard ...

  5. Building Energy Code

    Broader source: Energy.gov [DOE]

    Legislation passed in March 2010 authorized the Alabama Energy and Residential Code (AERC) Board to adopt mandatory residential and commercial energy codes for all jurisdictions. This is the firs...

  6. Building Energy Code

    Broader source: Energy.gov [DOE]

    All residential and commercial structures are required to comply with the state’s energy code. The 2009 New Mexico Energy Conservation Code (NMECC), effective June 2013, is based on 2009...

  7. Building Energy Code

    Broader source: Energy.gov [DOE]

    In September 2011 the Nebraska Building Energy Code was updated to the 2009 International Energy Conservation Code (IECC) standards.  As with the previous 2003 IECC standards, which had been in...

  8. Green Construction Codes 

    E-Print Network [OSTI]

    Blake, S.

    2011-01-01

    The network coding is a new paradigm that has been shown to improve throughput, fault tolerance, and other quality of service parameters in communication networks. The basic idea of the network coding techniques is to ...

  9. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Florida Building Commission (FBC) is directed to adopt, revise, update, and maintain the Florida Building Code in accordance with Chapter 120 of the state statutes. The code is mandatory...

  10. Building Energy Code

    Broader source: Energy.gov [DOE]

    A mandatory energy code is not enforced at the state level. If a local energy code is adopted, it is enforced at the local level. Builders or sellers of new residential buildings (single-family or...

  11. Building Energy Code

    Broader source: Energy.gov [DOE]

    The 1993 State Legislature updated the state energy code to the 1989 Model Energy Code (MEC) and established a procedure to update the standard. Then in 1995, following consultation with an...

  12. Building Energy Code

    Broader source: Energy.gov [DOE]

    Public Act 093-0936 (Illinois Energy Conservation Code for Commercial Buildings) was signed into law in August, 2004. The Illinois Energy Conservation Code for Commercial Buildings became effective...

  13. Coding with side information 

    E-Print Network [OSTI]

    Cheng, Szeming

    2005-11-01

    Source coding and channel coding are two important problems in communications. Although side information exists in everyday scenario, the e?ect of side information is not taken into account in the conventional setups. ...

  14. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Virginia Uniform Statewide Building Code (USBC) is a statewide minimum requirement that local jurisdictions cannot amend. The code is applicable to all new buildings in the commonwealth. The...

  15. Building Energy Code

    Broader source: Energy.gov [DOE]

    In March 2006, SB 459 was enacted to promote renewable energy and update the state's building energy codes.

  16. Design of optimal switching surfaces for switched autonomous systems Axel Schild, Xu Ding, Magnus Egerstedt and Jan Lunze

    E-Print Network [OSTI]

    Egerstedt, Magnus

    -line phase makes this design approach perfectly suited for the control of fast switching systems, like powerDesign of optimal switching surfaces for switched autonomous systems Axel Schild, Xu Ding, Magnus such as robotics, power electronics, process engineering and manufacturing systems [13], [19], [21]. Switched

  17. Steady-state entanglement of cavity arrays in finite-bandwidth squeezed reservoirs

    E-Print Network [OSTI]

    Zippilli, Stefano

    2014-01-01

    When two chains of quantum systems are driven at their ends by a two-mode squeezed reservoir, they approach a steady state characterized by the formation of many entangled pairs. Each pair is made of one element of the first and one of the second chain. This effect has been already predicted under the assumption of broadband squeezing. Here we investigate the situation of finite-bandwidth reservoirs. This is done by modeling the driving bath as the output field of a non-degenerate parametric oscillator. The resulting non-Markovian dynamics is studied within the theoretical framework of cascade open quantum systems. It is shown that the formation of pair-entangled structures occurs as long as the normal-mode splitting of the arrays does not overcome the squeezing bandwidth of the reservoir.

  18. Enhancing the bandwidth of gravitational-wave detectors with unstable optomechanical filters

    E-Print Network [OSTI]

    Haixing Miao; Yiqiu Ma; Chunnong Zhao; Yanbei Chen

    2015-05-30

    For gravitational-wave interferometric detectors, there is a tradeoff between the detector bandwidth and peak sensitivity when focusing on the shot noise level. This has to do with the frequency-dependent propagation phase lag (positive dispersion) of the signal. We consider embedding an active unstable filter---a cavity-assisted optomechanical device operating in the instability regime---inside the interferometer to compensate the phase, and using feedback control to stabilize the entire system. We show that this scheme in principle can enhance the bandwidth without sacrificing the peak sensitivity. However, there is one practical difficulty for implementing it due to the thermal fluctuation of the mechanical oscillator in the optomechanical filter, which puts a very stringent requirement on the environmental temperature and the mechanical quality factor.

  19. Atomic Faraday filter with equivalent noise bandwidth less than 1 GHz

    E-Print Network [OSTI]

    Zentile, Mark A; Keaveney, James; Adams, Charles S; Hughes, Ifan G

    2015-01-01

    We demonstrate an atomic bandpass optical filter with an equivalent noise bandwidth less than 1 GHz using the D$_1$ line in a cesium vapor. We use the ElecSus computer program to find optimal experimental parameters, and find that for important quantities the cesium D$_1$ line clearly outperforms other alkali metals on either D-lines. The filter simultaneously achieves a peak transmission of 77%, a passband of 310 MHz and an equivalent noise bandwidth of 0.96 GHz, for a magnetic field of 45.3 gauss and a temperature of 68.0$\\,^\\circ$C. Experimentally, the prediction from the model is verified. The experiment and theoretical predictions show excellent agreement.

  20. Decoupled DIMM: Building High-Bandwidth Memory System Using Low-Speed DRAM Devices

    E-Print Network [OSTI]

    Zhang, Zhao

    the demands on high bandwidth and large capac- ity from memory systems. In a conventional DDR2/DDR3 DRAM 1600MT/s in standard DDR3 (Double Data Rate) memory systems with 1.5V power supply. The proposed DDR4/s data rate are not only expensive but also of low density. Some DDR3 devices have been pushed to run

  1. Role of the Salt-bridge between Switch-1 and Switch-2 of Dictyostelium Myosin

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    Role of the Salt-bridge between Switch-1 and Switch-2 of Dictyostelium Myosin Marcus Furch1-phosphate. The closed form seems to be necessary for hydrolysis and is stabilised by the formation of a salt-bridge between an arginine residue in N2 and a glutamate residue in N3. We examined the role of this salt-bridge

  2. Coding theory basics Evaluation codes from algebraic varieties

    E-Print Network [OSTI]

    Little, John B.

    Coding theory basics Evaluation codes from algebraic varieties Interlude ­ counting rational points theory basics Evaluation codes from algebraic varieties Interlude ­ counting rational points on varieties Cubic surfaces and codes Outline 1 Coding theory basics 2 Evaluation codes from algebraic varieties 3

  3. Speech Coding for Mobile Ad Hoc Networks H. Dong, I. D. Chakares, C.-H. Lin, A. Gersho, E. Belding-Royer

    E-Print Network [OSTI]

    Belding-Royer, Elizabeth M.

    techniques and modified network protocols aimed at providing adequate quality of service in this difficult quality voice communication in MANETs. In this paper, we focus on speech coding techniques and some wireless bandwidth, low-power mobile terminals, high error rates, and the broad- cast nature of wireless

  4. Bandwidth provisioning in infrastructure-based wireless networks employing directional antennas

    SciTech Connect (OSTI)

    Hasiviswanthan, Shiva; Zhao, Bo; Vasudevan, Sudarshan; Yrgaonkar, Bhuvan

    2009-01-01

    Motivated by the widespread proliferation of wireless networks employing directional antennas, we study the problem of provisioning bandwidth in such networks. Given a set of subscribers and one or more access points possessing directional antennas, we formalize the problem of orienting these antennas in two fundamental settings: (1) subscriber-centric, where the objective is to fairly allocate bandwidth among the subscribers and (2) provider-centric, where the objective is to maximize the revenue generated by satisfying the bandwidth requirements of subscribers. For both the problems, we first design algorithms for a network with only one access point working under the assumption that the number of antennas does not exceed the number of noninterfering channels. Using the well-regarded lexicographic max-min fair allocation as the objective for a subscriber-centric network, we present an optimum dynamic programming algorithm. For a provider-centric network, the allocation problem turns out to be NP-hard. We present a greedy heuristic based algorithm that guarantees almost half of the optimum revenue. We later enhance both these algorithms to operate in more general networks with multiple access points and no restrictions on the relative numbers of antennas and channels. A simulation-based evaluation using OPNET demonstrates the efficacy of our approaches and provides us further in insights into these problems.

  5. 1178 Biometrics, September 2011 A brief examination of the files provided shows that the code

    E-Print Network [OSTI]

    Carlin, Bradley P.

    this package" or "use this data." It would have been much better, for teaching pur- poses, if the author provided an R package tied to the book. Michael Friendly Chair, Quantitative Methods, Psychology Department analysis, somewhat hampered by the issue of label switching or nonuniqueness of the coding of the states

  6. Stress-tolerant and temperature-stable RF MEMS capacitive switches and tunable filters

    E-Print Network [OSTI]

    Reines, Isak C.

    2010-01-01

    4.2 UCSD Switch Design . . . . . . . . . . . . . . .5.2 Switch Design . . . . . . . . . . . . . . .2.2 Switch Design in the Raytheon RF MEMS Process . . . . .

  7. Electromechanical modulation of electrical conduction through organic thin films for switching applications

    E-Print Network [OSTI]

    Niroui, Farnaz

    2013-01-01

    Nanoelectromechanical (NEM) switches exhibit abrupt switching behavior and near-zero leakage current making them promising alternatives to conventional semiconductor switches. However, they require high actuation voltages ...

  8. Coordination and Lock-In: Competition with Switching Costs and Network Effects

    E-Print Network [OSTI]

    Farrell, Joseph; Klemperer, Paul

    2006-01-01

    M.G. (1994), \\Switching costs in the bank deposit market",1998), \\Switching costs in the wholesale distribution ofT.M. (2000), \\Switching costs in vertically related

  9. Design Considerations for Wide Bandwidth Continuous-Time Low-Pass Delta-Sigma Analog-to-Digital Converters 

    E-Print Network [OSTI]

    Padyana, Aravind 1983-

    2010-11-11

    Continuous-time (CT) delta-sigma (??) analog-to-digital converters (ADC) have emerged as the popular choice to achieve high resolution and large bandwidth due to their low cost, power efficiency, inherent anti-alias filtering ...

  10. A preference-based extension for the scalable consensus-based bandwidth allocation protocol in a multicast video conference environment 

    E-Print Network [OSTI]

    Christensen, Eric Joseph

    2000-01-01

    This thesis develops a protocol extension, the Preference-based Allocation eXtension for Layered Sources (PAXLS), to complement the existing Scalable ConsensUs based Bandwidth Allocation (SCUBA) protocol used in allocation ...

  11. Micro electro mechanical system optical switching

    DOE Patents [OSTI]

    Thorson, Kevin J; Stevens, Rick C; Kryzak, Charles J; Leininger, Brian S; Kornrumpf, William P; Forman, Glenn A; Iannotti, Joseph A; Spahn, Olga B; Cowan, William D; Dagel, Daryl J

    2013-12-17

    The present disclosure includes apparatus, system, and method embodiments that provide micro electo mechanical system optical switching and methods of manufacturing switches. For example, one optical switch embodiment includes at least one micro electro mechanical system type pivot mirror structure disposed along a path of an optical signal, the structure having a mirror and an actuator, and the mirror having a pivot axis along a first edge and having a second edge rotatable with respect to the pivot axis, the mirror being capable of and arranged to be actuated to pivot betweeen a position parallel to a plane of an optical signal and a position substantially normal to the plane of the optical signal.

  12. Magnetic switch for reactor control rod. [LMFBR

    DOE Patents [OSTI]

    Germer, J.H.

    1982-09-30

    A magnetic reed switch assembly is described for activating an electromagnetic grapple utilized to hold a control rod in position above a reactor core. In normal operation the magnetic field of a permanent magnet is short-circuited by a magnetic shunt, diverting the magnetic field away from the reed switch. The magnetic shunt is made of a material having a Curie-point at the desired release temperature. Above that temperature the material loses its ferromagnetic properties, and the magnetic path is diverted to the reed switch which closes and short-circuits the control circuit for the control rod electro-magnetic grapple which allows the control rod to drop into the reactor core for controlling the reactivity of the core.

  13. Mechanical code comparator

    DOE Patents [OSTI]

    Peter, Frank J. (Albuquerque, NM); Dalton, Larry J. (Bernalillo, NM); Plummer, David W. (Albuquerque, NM)

    2002-01-01

    A new class of mechanical code comparators is described which have broad potential for application in safety, surety, and security applications. These devices can be implemented as micro-scale electromechanical systems that isolate a secure or otherwise controlled device until an access code is entered. This access code is converted into a series of mechanical inputs to the mechanical code comparator, which compares the access code to a pre-input combination, entered previously into the mechanical code comparator by an operator at the system security control point. These devices provide extremely high levels of robust security. Being totally mechanical in operation, an access control system properly based on such devices cannot be circumvented by software attack alone.

  14. Manufacturing fuel-switching capability, 1988

    SciTech Connect (OSTI)

    Not Available

    1991-09-01

    Historically, about one-third of all energy consumed in the United States has been used by manufacturers. About one-quarter of manufacturing energy is used as feedstocks and raw material inputs that are converted into nonenergy products; the remainder is used for its energy content. During 1988, the most recent year for which data are available, manufacturers consumed 15.5 quadrillion British thermal units (Btu) of energy to produce heat and power and to generate electricity. The manufacturing sector also has widespread capabilities to switch from one fuel to another for either economic or emergency reasons. There are numerous ways to define fuel switching. For the purposes of the Manufacturing Energy Consumption Survey (MECS), fuel switching is defined as the capability to substitute one energy source for another within 30 days with no significant modifications to the fuel-consuming equipment, while keeping production constant. Fuel-switching capability allows manufacturers substantial flexibility in choosing their mix of energy sources. The consumption of a given energy source can be maximized if all possible switching into that energy source takes place. The estimates in this report are based on data collected on the 1988 Manufacturing Energy Consumption Survey (MECS), Forms 846 (A through C). The EIA conducts this national sample survey of manufacturing energy consumption on a triennial basis. The MECS is the only comprehensive source of national-level data on energy-related information for the manufacturing industries. The MECS was first conducted in 1986 to collect data for 1985. This report presents information on the fuel-switching capabilities of manufacturers in 1988. This report is the second of a series based on the 1988 MECS. 8 figs., 31 tabs.

  15. Optically triggered high voltage switch network and method for switching a high voltage

    DOE Patents [OSTI]

    El-Sharkawi, Mohamed A. (Renton, WA); Andexler, George (Everett, WA); Silberkleit, Lee I. (Mountlake Terrace, WA)

    1993-01-19

    An optically triggered solid state switch and method for switching a high voltage electrical current. A plurality of solid state switches (350) are connected in series for controlling electrical current flow between a compensation capacitor (112) and ground in a reactive power compensator (50, 50') that monitors the voltage and current flowing through each of three distribution lines (52a, 52b and 52c), which are supplying three-phase power to one or more inductive loads. An optical transmitter (100) controlled by the reactive power compensation system produces light pulses that are conveyed over optical fibers (102) to a switch driver (110') that includes a plurality of series connected optical triger circuits (288). Each of the optical trigger circuits controls a pair of the solid state switches and includes a plurality of series connected resistors (294, 326, 330, and 334) that equalize or balance the potential across the plurality of trigger circuits. The trigger circuits are connected to one of the distribution lines through a trigger capacitor (340). In each switch driver, the light signals activate a phototransistor (300) so that an electrical current flows from one of the energy reservoir capacitors through a pulse transformer (306) in the trigger circuit, producing gate signals that turn on the pair of serially connected solid state switches (350).

  16. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Office of the State Fire Marshal is granted the authority to promulgate amendments, revisions, and alternative compliance methods for the code.

  17. Tokamak Systems Code

    SciTech Connect (OSTI)

    Reid, R.L.; Barrett, R.J.; Brown, T.G.; Gorker, G.E.; Hooper, R.J.; Kalsi, S.S.; Metzler, D.H.; Peng, Y.K.M.; Roth, K.E.; Spampinato, P.T.

    1985-03-01

    The FEDC Tokamak Systems Code calculates tokamak performance, cost, and configuration as a function of plasma engineering parameters. This version of the code models experimental tokamaks. It does not currently consider tokamak configurations that generate electrical power or incorporate breeding blankets. The code has a modular (or subroutine) structure to allow independent modeling for each major tokamak component or system. A primary benefit of modularization is that a component module may be updated without disturbing the remainder of the systems code as long as the imput to or output from the module remains unchanged.

  18. Building Energy Code

    Broader source: Energy.gov [DOE]

    Kansas adopted the 2006 International Energy Conservation Code (IECC) as "the applicable state standard" for commercial and industrial buildings. Enforcement is provided by local jurisdictions; t...

  19. Building Energy Code

    Broader source: Energy.gov [DOE]

    Pennsylvania Department of Labor and Industry (DLI) has the authority to upgrade commercial and residential energy standards through the regulatory process. The current code, the 2009 UCC, became...

  20. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Energy Conservation Construction Code of New York State (ECCCNYS) requires that all government, commercial and residential buildings, including renovations involving building system replaceme...

  1. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Maryland Building Performance Standards (MBPS) are adopted by the Maryland Department of Housing and Community Development (DHCD) Codes Administration. As required by legislation passed in...

  2. Low voltage amplifier architecture for high speed switched capacitor circuits 

    E-Print Network [OSTI]

    Shankar, Asit

    2001-01-01

    This work concentrates on circuit realization of high speed and low voltage switched capacitor circuits, with emphasis on the operational transconductance amplifier (OTA). An overview of switched capacitor circuits is given. Speed and voltage...

  3. Stability analysis for class of switched nonlinear systems

    E-Print Network [OSTI]

    Shaker, Hamid Reza

    Stability analysis for a class of switched nonlinear systems is addressed in this paper. Two linear matrix inequality (LMI) based sufficient conditions for asymptotic stability are proposed for switched nonlinear systems. ...

  4. Dynamics in hybrid complex systems of switches and oscillators

    E-Print Network [OSTI]

    Dane Taylor; Elana J. Fertig; Juan G. Restrepo

    2013-08-09

    While considerable progress has been made in the analysis of large systems containing a single type of coupled dynamical component (e.g., coupled oscillators or coupled switches), systems containing diverse components (e.g., both oscillators and switches) have received much less attention. We analyze large, hybrid systems of interconnected Kuramoto oscillators and Hopfield switches with positive feedback. In this system, oscillator synchronization promotes switches to turn on. In turn, when switches turn on they enhance the synchrony of the oscillators to which they are coupled. Depending on the choice of parameters, we find theoretically coexisting stable solutions with either (i) incoherent oscillators and all switches permanently off, (ii) synchronized oscillators and all switches permanently on, or (iii) synchronized oscillators and switches that periodically alternate between the on and off states. Numerical experiments confirm these predictions. We discuss how transitions between these steady state solutions can be onset deterministically through dynamic bifurcations or spontaneously due to finite-size fluctuations.

  5. Carbon nano-relays for low power switching

    E-Print Network [OSTI]

    Milaninia, Kaveh Mehdi

    2009-01-01

    In this thesis two unique carbon based nanoelectromechanical switches or carbon nano-relays are demonstrated as a toolkit for investigating NEMs based low power switching. The first is a vertical carbon nano-relay, consisting ...

  6. Phase modulated rotor angle encoder for switched reluctance motor drive 

    E-Print Network [OSTI]

    Mahajan, Shailendra

    1993-01-01

    Advantages of the switched reluctance motor (SRM) drive makes it an attractive candidate for replacing many adjustable speed ac and dc drives, in both industrial and consumer applications. The switched reluctance drives ...

  7. A Taxonomy of Rerouting in Circuit-Switched Networks

    E-Print Network [OSTI]

    Wong, Eric Wing-Ming

    A Taxonomy of Rerouting in Circuit-Switched Networks Eric W. M. Wong and Andy K. M. Chan, City presents a taxonomy of rerouting in circuit- switched networks showing the various ways rerouting can

  8. Bayesian Nonparametric Inference of Switching Dynamic Linear Models

    E-Print Network [OSTI]

    Fox, Emily Beth

    Many complex dynamical phenomena can be effectively modeled by a system that switches among a set of conditionally linear dynamical modes. We consider two such models: the switching linear dynamical system (SLDS) and the ...

  9. Speed limitations of optical switching using a piezoelectric transducer 

    E-Print Network [OSTI]

    Wang, Chuan-Sheng

    1994-01-01

    Optical switching in interferometers using piezoelectric elements is investigated. Complete switching requires that the piezoelectric element induce enough mechanical motion to produce a 7r-radian phase shift in one arm of the interferometer...

  10. Language switching in bilinguals: Understanding of Bilinguals’ Language Production 

    E-Print Network [OSTI]

    Purmohammad, Mehdi

    2012-09-12

    bilingual language production. The effect of the grammar of the other language increased in the switch conditions. More inappropriate responses observed when switching from bilinguals’ L2 to L1. I interpret the results in terms of Hartsuiker and Pickering...

  11. Switched nonlinear differential algebraic equations: Solution theory, Lyapunov functions, and stability$

    E-Print Network [OSTI]

    Trenn, Stephan

    Switched nonlinear differential algebraic equations: Solution theory, Lyapunov functions¨urzburg, Germany Abstract We study switched nonlinear differential algebraic equations (DAEs) with respect in earlier work for linear switched DAEs to establish a solution framework for switched nonlinear DAEs

  12. Switched systems and the logical foundation of circuit theory

    E-Print Network [OSTI]

    Emanuel Gluskin

    2008-12-15

    Switched (singular) systems become very common, which requires some revision of the conceptual basis of system theory.

  13. Switching dynamics in cholesteric blue phases

    E-Print Network [OSTI]

    A. Tiribocchi; G. Gonnella; D. Marenduzzo; E. Orlandini

    2011-03-30

    Blue phases are networks of disclination lines, which occur in cholesteric liquid crystals near the transition to the isotropic phase. They have recently been used for the new generation of fast switching liquid crystal displays. Here we study numerically the steady states and switching hydrodynamics of blue phase I (BPI) and blue phase II (BPII) cells subjected to an electric field. When the field is on, there are three regimes: for very weak fields (and strong anchoring at the boundaries) the blue phases are almost unaffected, for intermediate fields the disclinations twist (for BPI) and unzip (for BPII), whereas for very large voltages the network dissolves in the bulk of the cell. Interestingly, we find that a BPII cell can recover its original structure when the field is switched off, whereas a BPI cell is found to be trapped more easily into metastable configurations. The kinetic pathways followed during switching on and off entails dramatic reorganisation of the disclination networks. We also discuss the effect of changing the director field anchoring at the boundary planes and of varying the direction of the applied field.

  14. July 2, 2007 1 Optimal Transmission Switching

    E-Print Network [OSTI]

    Mangasarian, Olvi L.

    . INTRODUCTION n large electric networks, transmission is traditionally characterized as a static systemJuly 2, 2007 1 Optimal Transmission Switching Emily Bartholomew Fisher, Student Member, IEEE an optimal generation dispatch and transmission topology to meet a specific inflexible load as a mixed

  15. Smart Grid Application of Optimal Transmission Switching

    E-Print Network [OSTI]

    Ferris, Michael C.

    ;6 Introduction continued Electric Transmission Network Flow Problem Optimal Power Flow (OPF) AlternatingSmart Grid Application of Optimal Transmission Switching By, Kory W. Hedman, et al.* University (Professor, UC Berkeley) #12;2 Motivation Co-optimize transmission topology and generation dispatch

  16. Isolated and soft-switched power converter

    DOE Patents [OSTI]

    Peng, Fang Zheng (Knoxville, TN); Adams, Donald Joe (Knoxville, TN)

    2002-01-01

    An isolated and soft-switched power converter is used for DC/DC and DC/DC/AC power conversion. The power converter includes two resonant tank circuits coupled back-to-back through an isolation transformer. Each resonant tank circuit includes a pair of resonant capacitors connected in series as a resonant leg, a pair of tank capacitors connected in series as a tank leg, and a pair of switching devices with anti-parallel clamping diodes coupled in series as resonant switches and clamping devices for the resonant leg. The power converter is well suited for DC/DC and DC/DC/AC power conversion applications in which high-voltage isolation, DC to DC voltage boost, bidirectional power flow, and a minimal number of conventional switching components are important design objectives. For example, the power converter is especially well suited to electric vehicle applications and load-side electric generation and storage systems, and other applications in which these objectives are important. The power converter may be used for many different applications, including electric vehicles, hybrid combustion/electric vehicles, fuel-cell powered vehicles with low-voltage starting, remote power sources utilizing low-voltage DC power sources, such as photovoltaics and others, electric power backup systems, and load-side electric storage and generation systems.

  17. A thermodynamic switch for chromosome colocalization

    E-Print Network [OSTI]

    M. Nicodemi; B. Panning; A. Prisco

    2008-09-27

    A general model for the early recognition and colocalization of homologous DNA sequences is proposed. We show, on a thermodynamic ground, how the distance between two homologous DNA sequences is spontaneously regulated by the concentration and affinity of diffusible mediators binding them, which act as a switch between two phases corresponding to independence or colocalization of pairing regions.

  18. Domain switching in polycrystalline ferroelectric ceramics

    E-Print Network [OSTI]

    Li, Jiangyu

    ARTICLES Domain switching in polycrystalline ferroelectric ceramics J. Y. LI1, R. C. ROGAN2,3, E:10.1038/nmat1485 Ferroelectric ceramics are widely used as sensors and actuators for their electro collective process in commercially used polycrystalline ceramics that are agglomerations of a very large

  19. Efficient broad- and tunable-bandwidth optical extinction via aspect-ratio-tailored silver nanodisks

    E-Print Network [OSTI]

    Anquillare, Emma L; Hsu, Chia Wei; DeLacy, Brendan G; Joannopoulos, John D; Soljacic, Marin

    2015-01-01

    Sub-wavelength resonators typically exhibit a narrow-bandwidth response to optical excitations. We computationally design and experimentally synthesize tailored distributions of silver nanodisks to extinguish light over broad, tunable frequency windows. We show that metallic nanodisks are two- to twenty-times more efficient in absorbing and scattering light than common structures. Per-volume efficiency increases away from the plasma frequency of the underlying metal. We measure broadband extinction per volume that closely approaches theoretical predictions over three representative visible-range wavelength windows, confirming the high efficiency of nanodisks and demonstrating the collective power of computational design and experimental precision for developing new photonics technologies.

  20. A wide bandwidth free-electron laser with mode locking using current modulation.

    SciTech Connect (OSTI)

    Kur, E.; Dunning, D. J.; McNeil, B. W. J.; Wurtele, J.; Zholents, A. A. )

    2011-01-20

    A new scheme for mode locking a free-electron laser amplifier is proposed based on electron beam current modulation. It is found that certain properties of the original concept, based on the energy modulation of electrons, are improved including the spectral brightness of the source and the purity of the series of short pulses. Numerical comparisons are made between the new and old schemes and between a mode-locked free-electron laser and self-amplified spontaneous emission free-electron laser. Illustrative examples using a hypothetical mode-locked free-electron laser amplifier are provided. The ability to generate intense coherent radiation with a large bandwidth is demonstrated.

  1. Shape Similarity Measures for the Design of Small RNA Switches

    E-Print Network [OSTI]

    Barash, Danny

    Shape Similarity Measures for the Design of Small RNA Switches http://www.jbsdonline.com Abstract Conformational switching in the secondary structure of RNAs has recently attracted consid- erable attention that were found in bacteria and offer a unique regulation mechanism based on switching between two highly

  2. Toehold Switches: De-Novo-Designed Regulators of Gene Expression

    E-Print Network [OSTI]

    Polz, Martin

    Resource Toehold Switches: De-Novo-Designed Regulators of Gene Expression Alexander A. Green,1. Here, we report a class of de-novo-designed prokaryotic riboregulators called toehold switches that activate gene expression in response to cognate RNAs with arbitrary sequences. Toehold switches provide

  3. SBR switching by fuzzy pattern recognition S. Marsili-Libelli

    E-Print Network [OSTI]

    SBR switching by fuzzy pattern recognition S. Marsili-Libelli Department of Systems and Computers is normally operated on a fixed switching schedule with ample margin for possible inaccuracies, with the result that the process operation is highly inefficient. This paper proposes a switching strategy based

  4. Switching and Growth for Microbial Populations in Catastrophic Responsive Environments

    E-Print Network [OSTI]

    Visco, Paolo - Laboratoire Matičre et Systčmes Complexes, Université Paris 7

    Switching and Growth for Microbial Populations in Catastrophic Responsive Environments Paolo Visco), Universite´ Paris-Sud, Orsay, France ABSTRACT Phase variation, or stochastic switching between alternative environments. We use a theoretical model to assess whether such switching is a good strategy for growth

  5. The switch Markov chain for sampling irregular graphs

    E-Print Network [OSTI]

    Greenhill, Catherine

    The switch Markov chain for sampling irregular graphs Catherine Greenhill School of Mathematics approach to this problem uses a simple Markov chain, which we call the switch chain, to perform the sampling. The switch chain is known to be rapidly mixing for regular degree sequences. We prove

  6. Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira and Fatih Hakan Koklu the process of diffusive conduction that we use in our optoelectronic switches to achieve rapid optical switching on a picosecond time scale . We present the characteristic Green's function of the diffusive

  7. DESIGN OF MULTICAST SWITCHES FOR SANS APPROVED BY SUPERVISING COMMITTEE

    E-Print Network [OSTI]

    Boppana, Rajendra V.

    DESIGN OF MULTICAST SWITCHES FOR SANS APPROVED BY SUPERVISING COMMITTEE: Dr. Rajendra V. Boppana OF MULTICAST SWITCHES FOR SANS by RAJESH BOPPANA, B.Tech THESIS Presented to the Graduate Faculty at all the times. May 2003 iii #12;DESIGN OF MULTICAST SWITCHES FOR SANS Rajesh Boppana, M

  8. Diagnosing CrosstalkFaulty Switches in Photonic Networks Chunming Qiao

    E-Print Network [OSTI]

    Qiao, Chunming

    Diagnosing Crosstalk­Faulty Switches in Photonic Networks Chunming Qiao Department of Electrical@eng.buffalo.edu Abstract A procedure for diagnosing crosstalk and crosstalk­ faulty switches in photonic Dilated Benes Networks (DBNs) is presented. It obtains the crosstalk ratios of each and every switch in an N \\Theta N DBN

  9. THE INHERENT QUEUING DELAY OF PARALLEL PACKET SWITCHES

    E-Print Network [OSTI]

    Attiya, Hagit

    THE INHERENT QUEUING DELAY OF PARALLEL PACKET SWITCHES (Extended Abstract) Hagit Attiya and David {hagit,hdavid}@cs.technion.ac.il Abstract The parallel packet switch (PPS) is extensively used as the core of con- temporary commercial switches. This paper investigates the inherent queuing delay

  10. Where Are the Switches on This Thing? L. F. Abbott

    E-Print Network [OSTI]

    Abbott, Laurence

    21 Where Are the Switches on This Thing? L. F. Abbott Introduction Controlled responses differ from and turn them off and on? Self-regulated switching is vital to the operation of complex machines such as computers. The essential building block of a computer is a voltage-gated switch, the transistor

  11. INP-BASED INTEGRATED MZI SWITCHES FOR OPTICAL

    E-Print Network [OSTI]

    INP-BASED INTEGRATED MZI SWITCHES FOR OPTICAL COMMUNICATION Peter Maat #12;#12;InP-based Integrated MZI Switches for Optical Communication Proefschrift ter verkrijging van de graad van doctor aan de InP-based Integrated MZI Switches for Optical Communication This thesis addresses research concerning

  12. DEVELOPMENT OF BROADBAND LOW-VOLTAGE RF MEM SWITCHES

    E-Print Network [OSTI]

    Shen, Shyh-Chiang

    DEVELOPMENT OF BROADBAND LOW-VOLTAGE RF MEM SWITCHES S.C. Shen, D. T. Becher, D. C. Caruth, and M)333-4054 Fax: (217) 244-6375 Abstract We present novel RF switches using micro-electro- mechanical (MEM) technology. These MEM switches are built on GaAs substrates using GaAs MESFET MMIC- compatible processes

  13. The Inherent Queuing Delay of Parallel Packet Switches

    E-Print Network [OSTI]

    Hay, David

    The Inherent Queuing Delay of Parallel Packet Switches Hagit Attiya and David Hay Abstract--The parallel packet switch (PPS) extends the inverse multiplexing architecture and is widely used as the core of contemporary commercial switches. This paper investigates the inherent queuing delay introduced by the PPS

  14. Fast Context Switches: Compiler and Architectural Support for

    E-Print Network [OSTI]

    Whalley, David

    Fast Context Switches: Compiler and Architectural Support for Preemptive Scheduling Jeffrey S to preemptive context switching in real­time systems that use preemptive scheduling. The method introduced in this paper attempts to avoid saving and restoring registers by performing context switches at points

  15. Delay Analysis of Combined Input-Crosspoint Queueing Switches

    E-Print Network [OSTI]

    Hamdi, Mounir

    Delay Analysis of Combined Input-Crosspoint Queueing Switches Ge Nong, Ning Situ and Mounir Hamdi Abstract-- The switch architecture with the combined input- crosspoint queueing (CICQ) scheme has been recognized as a practical promising solution for building cost-effective high- performance switches. In an N

  16. Load-Balancing Multipath Switching System with Flow Slice

    E-Print Network [OSTI]

    Chao, Jonathan

    multistage switches in Cisco CRS-1 [1]. Other examples include the Vitesse switch chip family [3 to distribute incoming traffic A(t) across its k internal switching paths fŔlgđl 2 ˝1; kŢ to meet at least three, minimize average packet delay, and maximize throughput. This requirement is formalized as Equalize Č Al jđt

  17. General Impedance Synthesizer Using Minimal Configuration of Switching Converters

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    converter may contain a storage element and a pair of switches, such as the buck, buck-boost and boostGeneral Impedance Synthesizer Using Minimal Configuration of Switching Converters Joe C.P. Liu Chi a minimum number of switching converters is stud- ied in this paper. We begin with showing that any

  18. Fast Switching Phase Calibration: Effectiveness at Mauna Kea and Chajnantor

    E-Print Network [OSTI]

    Groppi, Christopher

    Fast Switching Phase Calibration: Effectiveness at Mauna Kea and Chajnantor M.A. Holdaway, Simon J We present estimates of how well fast switching phase calibration would perform at the Chajnantor, Chile, and Mauna Kea VLBA sites. Fast switching at Chajnantor would achieve better than 30 ffi r. m. s

  19. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group;1 Optimal Control of Switched Hybrid Systems: A Brief Survey Feng Zhu and Panos J. Antsaklis Department a few. The problem of determining optimal control laws for hybrid systems and in particular for switched

  20. RF-MEMS capacitive switches with high reliability

    DOE Patents [OSTI]

    Goldsmith, Charles L.; Auciello, Orlando H.; Carlisle, John A.; Sampath, Suresh; Sumant, Anirudha V.; Carpick, Robert W.; Hwang, James; Mancini, Derrick C.; Gudeman, Chris

    2013-09-03

    A reliable long life RF-MEMS capacitive switch is provided with a dielectric layer comprising a "fast discharge diamond dielectric layer" and enabling rapid switch recovery, dielectric layer charging and discharging that is efficient and effective to enable RF-MEMS switch operation to greater than or equal to 100 billion cycles.

  1. Layered Switching for Networks on Chip Zhonghai Lu

    E-Print Network [OSTI]

    Jantsch, Axel

    ; General Terms: Design, Theory, Performance Keywords: Network-on-Chip, System-on-Chip, Switching Technique a large portion of area and consume significant power. In the Ćthereal WH switch [4], the flit buffersLayered Switching for Networks on Chip Zhonghai Lu zhonghai@kth.se Ming Liu mingliu@kth.se Axel

  2. On Reachability and Stabilization of Switched Linear Systems Zhendong Sun

    E-Print Network [OSTI]

    Duffy, Ken

    interest in modelling, analysis and design of switched and hybrid systems (see [1, 4, 5, 9, 12 applications such as power systems and power electronics [10, 8]. Control techniques based on switching between, we are to design not only the appropriate control inputs but also the switching strategy in order

  3. Aalborg Universitet Switching speed limitations of high power IGBT modules

    E-Print Network [OSTI]

    Munk-Nielsen, Stig

    of the total power loss. Therefore, by design, it is critical that switching losses are reduced to a minimumAalborg Universitet Switching speed limitations of high power IGBT modules Incau, Bogdan Ioan.aau.dk on: november 29, 2015 #12;Switching speed limitations of high power IGBT modules Bogdan Ioan Incau

  4. Alternative structures for two-dimensional MEMS optical switches [Invited

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Two-dimensional (2-D) microelectromechanical system (MEMS) optical switches have the merits of easy technologies have been proposed for building OXCs. Microelectromechanical system (MEMS) optical switches haveAlternative structures for two-dimensional MEMS optical switches [Invited] Victor O. K. Li

  5. Heritable Stochastic Switching Revealed by Single-Cell Genealogy

    E-Print Network [OSTI]

    van Oudenaarden, Alexander

    Heritable Stochastic Switching Revealed by Single-Cell Genealogy Benjamin B. Kaufmann1,2[ , Qiong switching revealed by single-cell genealogy. PLoS Biol 5(9): e239. doi:10.1371/ journal.pbio.0050239 measurements of phenotype stability, switching, and herit- ability are rare, both because detailed genealogical

  6. Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications /

    E-Print Network [OSTI]

    Nakatani, Toshifumi

    2013-01-01

    Switching Power Amplifier . 103 Introduction .. 103 Theoretical DesignSwitching Power Amplifier . 162 Introduction .. 162 Theoretical and Circuit Design

  7. Low noise Millimeter-wave and THz Receivers, Imaging Arrays, Switches in Advanced CMOS and SiGe Processes /

    E-Print Network [OSTI]

    Uzunkol, Mehmet

    2013-01-01

    SPDT Switchand Double-Shunt Switches . . . . . . . . . . . . . . . . .Phase Shifters and Switches . . . . . . . . . 4.1

  8. Quasi-Output-Buffered Switches Cheng-Shang Chang, Fellow, IEEE, Jay Cheng, Senior Member, IEEE,

    E-Print Network [OSTI]

    Chang, Cheng-Shang

    1 Quasi-Output-Buffered Switches Cheng-Shang Chang, Fellow, IEEE, Jay Cheng, Senior Member, IEEE-buffered switches have better performance than other switch architectures. However, output-buffered switches also-buffered switches are difficult. In this paper, we study the problem of constructing scalable switches that have

  9. On Virtualizing Ethernet Switches Mark McGinley, Tao Li, and Malathi Veeraraghavan

    E-Print Network [OSTI]

    Huang, Wei

    On Virtualizing Ethernet Switches Mark McGinley, Tao Li, and Malathi Veeraraghavan 151 Engineer network switches in order to create multiple logical switches from one physical switch. The motivation of them a logical switch that could coexist with other R&E projects' logical switches, so that each would

  10. Report number codes

    SciTech Connect (OSTI)

    Nelson, R.N.

    1985-05-01

    This publication lists all report number codes processed by the Office of Scientific and Technical Information. The report codes are substantially based on the American National Standards Institute, Standard Technical Report Number (STRN)-Format and Creation Z39.23-1983. The Standard Technical Report Number (STRN) provides one of the primary methods of identifying a specific technical report. The STRN consists of two parts: The report code and the sequential number. The report code identifies the issuing organization, a specific program, or a type of document. The sequential number, which is assigned in sequence by each report issuing entity, is not included in this publication. Part I of this compilation is alphabetized by report codes followed by issuing installations. Part II lists the issuing organization followed by the assigned report code(s). In both Parts I and II, the names of issuing organizations appear for the most part in the form used at the time the reports were issued. However, for some of the more prolific installations which have had name changes, all entries have been merged under the current name.

  11. Determining a bisection bandwidth for a multi-node data communications network

    DOE Patents [OSTI]

    Faraj, Ahmad A. (Rochester, MN)

    2010-01-26

    Methods, systems, and products are disclosed for determining a bisection bandwidth for a multi-node data communications network that include: partitioning nodes in the network into a first sub-network and a second sub-network in dependence upon a topology of the network; sending, by each node in the first sub-network to a destination node in the second sub-network, a first message having a predetermined message size; receiving, by each node in the first sub-network from a source node in the second sub-network, a second message; measuring, by each node in the first sub-network, the elapsed communications time between the sending of the first message and the receiving of the second message; selecting the longest elapsed communications time; and calculating the bisection bandwidth for the network in dependence upon the number of the nodes in the first sub-network, the predetermined message size of the first test message, and the longest elapsed communications time.

  12. Enhancement of Sensitivity-Bandwidth Product of Interferometric GW Detectors using White Light Cavities

    E-Print Network [OSTI]

    M. Salit; M. S. Shahriar

    2009-06-11

    The effect of gravitational waves (GWs) has been observed indirectly, by monitoring the change in the orbital frequency of neutron stars in a binary system as they lose energy via gravitational radiation. However, GWs have not yet been observed directly. The initial LIGO apparatus has not yet observed GWs. The Advanced LIGO (AdLIGO) will use a combination of improved techniques in order to increase the sensitivity. Along with power recycling and a higher power laser source, the AdLIGO will employ signal recycling (SR). While SR would increase sensitivity, it would also reduce the bandwidth significantly. Previously, we and others have investigated, theoretically and experimentally, the feasibility of using a White Light Cavity (WLC) to circumvent this constraint. However, in the previous work, it was not clear how one would incorporate the white light cavity effect. Here, we first develop a general model for Michelson-Interferometer based GW detectors that can be easily adapted to include the effects of incorporating a WLC into the design. We then describe a concrete design of a WLC constructed as a compound mirror, to replace the signal recycling mirror. This design is simple, robust, completely non-invasive, and can be added to the AdLIGO system without changing any other optical elements. We show a choice of parameters for which the signal sensitivity as well as the bandwidth are enhanced significantly over what is planned for the AdLIGO, covering the entire spectrum of interest for gravitational waves.

  13. TRANSF code user manual

    SciTech Connect (OSTI)

    Weaver, H.J.

    1981-11-01

    The TRANSF code is a semi-interactive FORTRAN IV program which is designed to calculate the model parameters of a (structural) system by performing a least square parameter fit to measured transfer function data. The code is available at LLNL on both the 7600 and the Cray machines. The transfer function data to be fit is read into the code via a disk file. The primary mode of output is FR80 graphics, although, it is also possible to have results written to either the TTY or to a disk file.

  14. Float level switch for a nuclear power plant containment vessel

    DOE Patents [OSTI]

    Powell, J.G.

    1993-11-16

    This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel. 1 figures.

  15. Float level switch for a nuclear power plant containment vessel

    DOE Patents [OSTI]

    Powell, James G. (Clifton Park, NY)

    1993-01-01

    This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel.

  16. Nevada Energy Code for Buildings

    Broader source: Energy.gov [DOE]

    Legislation signed in 2009 changed the process of adopting building codes in the state. Previously, the statewide code would only apply to local governments that had not already adopted a code,...

  17. Windows Server 2012 Hyper-V Extensible Switch and Cisco Nexus 1000V Series Switches 1 Windows Server 2012 Hyper-V

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Windows Server 2012 Hyper-V Extensible Switch and Cisco Nexus 1000V Series Switches 1 Windows Server 2012 Hyper-V Extensible Switch and Cisco Nexus 1000V Series Switches StreamliningVirtualNetworksintheDataCenter A Microsoft/Cisco White Paper May 2012 #12;Windows Server 2012 Hyper-V Extensible Switch and Cisco Nexus 1000V

  18. Compiling Codes on Euclid

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

    example.x example.c For C++ source code use mpiCC: % mpiCC -o example.x example.C PGI Compilers (CC++Fortran) See PGI compiler for information about this compiler. GNU Compilers...

  19. Compiling Codes on Hopper

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

    example.x example.c For C++ source code use CC % CC -fast -o example.x example.C All compilers on Hopper, PGI, Pathscale, Cray, GNU, and Intel, are provided via five programming...

  20. Climate Code Foundation

    E-Print Network [OSTI]

    Barnes, Nick; Jones, David

    2011-07-05

    Climate Code Foundation - who are we? A non-profit organisation founded in August 2010; our goal is to promote the public understanding of climate science, by increasing the visibility and clarity of the software used in climate science...

  1. Building Energy Code

    Broader source: Energy.gov [DOE]

    Missouri does not have a statewide building or energy code for private residential and commercial buildings, and there currently is no state regulatory agency authorized to promulgate, adopt, or...

  2. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Oregon Energy Code amendments were most recently updated for both residential and non-residential construction in 2014. In October 2010 Oregon also adopted the Oregon Solar Installation...

  3. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Texas State Energy Conservation Office (SECO) by rule may choose to adopt the latest published editions of the energy efficiency provisions of the International Residential Code (IRC) or the...

  4. Building Energy Code

    Broader source: Energy.gov [DOE]

    Authority for adopting the state energy codes was previously vested in the Energy Security Office of the Department of Commerce (originally the Department of Public Services). In 1999-2000, the...

  5. Building Energy Code

    Broader source: Energy.gov [DOE]

    The Massachusetts Board of Building Regulations and Standards has authority to promulgate the Massachusetts State Building Code (MSBC). The energy provisions in the MSBC were developed by the Boa...

  6. Systematic wireless network coding

    E-Print Network [OSTI]

    Shrader, Brooke E.

    We present a systematic network coding strategy for cooperative communication, in which some nodes may replicate-and-forward packets in addition to sending random linear combinations of the packets. We argue that if this ...

  7. Piezoelectric buckling actuators : form reduction, bidirectional control, and optimal switching

    E-Print Network [OSTI]

    Peńalver-Ŕguila, Lluís Enric

    2014-01-01

    Piezoelectric stack actuators are generally described as having large force density, high bandwidth response, and limited yet precise displacement properties. As a result, these actuators have been widely applied to precision ...

  8. Flexoelectric switching in cholesteric blue phases

    E-Print Network [OSTI]

    A. Tiribocchi; M. E. Cates; G. Gonnella; D. Marenduzzo; E. Orlandini

    2013-03-25

    We present computer simulations of the response of a flexoelectric blue phase network, either in bulk or under confinement, to an applied field. We find a transition in the bulk between the blue phase I disclination network and a parallel array of disclinations along the direction of the applied field. Upon switching off the field, the system is unable to reconstruct the original blue phase but gets stuck in a metastable phase. Blue phase II is comparatively much less affected by the field. In confined samples, the anchoring at the walls and the geometry of the device lead to the stabilisation of further structures, including field-aligned disclination loops, splayed nematic patterns, and yet more metastable states. Our results are relevant to the understanding of the switching dynamics for a class of new, "superstable", blue phases which are composed of bimesogenic liquid crystals, as these materials combine anomalously large flexoelectric coefficients, and low or near-zero dielectric anisotropy.

  9. Integrating S6 Code Search and Code Bubbles

    E-Print Network [OSTI]

    Reiss, Steven P.

    the results of the search. Index Terms--Code search, integrated development envi- ronments, test-based searchIntegrating S6 Code Search and Code Bubbles Steven P. Reiss Department of Computer Science Brown search over open source repositories as part of the Code Bub- bles integrated development environment

  10. Superconducting quantum interference device microsusceptometer balanced over a wide bandwidth for nuclear magnetic resonance applications

    SciTech Connect (OSTI)

    Vinante, A. Falferi, P.; Mezzena, R.

    2014-10-15

    Superconducting Quantum Interference Device (SQUID) microsusceptometers have been widely used to study magnetic properties of materials at microscale. As intrinsically balanced devices, they could also be exploited for direct SQUID-detection of nuclear magnetic resonance (NMR) from micron sized samples, or for SQUID readout of mechanically detected NMR from submicron sized samples. Here, we demonstrate a double balancing technique that enables achievement of very low residual imbalance of a SQUID microsusceptometer over a wide bandwidth. In particular, we can generate ac magnetic fields within the SQUID loop as large as 1 mT, for frequencies ranging from dc up to a few MHz. As an application, we demonstrate direct detection of NMR from {sup 1}H spins in a glycerol droplet placed directly on top of the 20 ?m SQUID loops.

  11. An analysis on the mid-latitude scintillation and coherence frequency bandwidth using transionospheric VHF signals

    SciTech Connect (OSTI)

    Juang, Zhen [Los Alamos National Laboratory; Roussel-dupre, Robert [Los Alamos National Laboratory

    2008-01-01

    An analysis was perfonned on the mid-latitude scintillation and coherence frequency bandwidth (Fcoh) using transionospheric VHF signal data. The data include 1062 events spanning from November 1997 to June 2002. Each event records FORTE satellite received VHF signals from LAPP located at Los Alamos, New Mexico. Fcohs were derived to study scintillation characteristics on diurnal and seasonal variations, as well as changes due to solar and geomagnetic activities. Comparisons to the VHFIUHF coherence frequency bandwidth studies previously reported at equatorial and mid-latitude regions are made using a 4th power frequency dependence relationship. Furthennore, a wideband ionospheric scintillation model, WBMOD, was used to estimate Fcohs and compared with our VHF Fcoh values. Our analysis indicates mid-latitude scintillation characteristics that are not previously revealed. At the VHF bottom frequency range (3035 MHz), distinguished smaller Fcohs are found in time period from sunset to midnight, in wann season from May to August, and in low solar activity years. The effects of geomagnetic storm activity on Fcoh are characterized by a sudden transition at a Kp index of 50-60. Comparisons with median Fcohs estimated from other studies validated our VHF Fcohs for daytime while an order of magnitude larger Fcohs are found for nighttime, implying a time-dependent issue in applying the 4th order power relationship. Furthermore, comparisons with WBMOD-estimated Fcohs indicated generally matched median scintillation level estimates while differences do exist for those events undergoing high geomagnetic stonn activity which may imply underestimates of scintillation level by the WBMOD in the mid-latitude regions.

  12. Switch Switch

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

    5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon...

  13. Unknown Word Extraction from Multilingual Code-Switching Department of Information Management

    E-Print Network [OSTI]

    , ( ) ( ) ( ) ( ) i j i j i j i j i j P w w C w w N PMI w w P w P w C w C w = = i (1) ( , )i jC w w iw jw N Google ( , )i jC w w ( )iC w ( )jC w N 1012 (N PMI ) PMI PMI () Entropy (Entropy " "" Google 999 " " 212 58 " 336 "" entropy 1( ) { ,..., }t nRC w = w w wt (right context) wt wt

  14. Scaling of Superconducting Switches for Extraction of Magnetic Energy

    E-Print Network [OSTI]

    Ballarino, A

    2010-01-01

    In certain cases it is necessary to extract the energy from a superconducting magnet when it quenches, in order to limit the heat generated by the event and thus prevent irreversible damage. This is usually achieved by opening a contact breaker across a resistor in the circuit feeding the magnet. For the heavy currents used to excite large magnets such switches incorporate sophisticated devices to limit arcing during the operation; besides being quite large and expensive, such switches have a limited lifetime. It is therefore interesting to consider the use of superconducting switches to perform this function, the advantage being that such switches would (i) not require maintenance and (ii) would be housed within the cryogenic environment of the magnet, and thus avoid permanent diversion of the current in and out of that environment to the mechanical switch (which operates at room temperature). However, practical switches for such an application are made up of superconductor in a metal matrix, and it is conve...

  15. Quantum error control codes 

    E-Print Network [OSTI]

    Abdelhamid Awad Aly Ahmed, Sala

    2008-10-10

    by SALAH ABDELHAMID AWAD ALY AHMED Submitted to the O–ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2008 Major Subject: Computer Science QUANTUM ERROR CONTROL CODES A... Members, Mahmoud M. El-Halwagi Anxiao (Andrew) Jiang Rabi N. Mahapatra Head of Department, Valerie Taylor May 2008 Major Subject: Computer Science iii ABSTRACT Quantum Error Control Codes. (May 2008) Salah Abdelhamid Awad Aly Ahmed, B.Sc., Mansoura...

  16. Bandwidth Allocation for Iterative Data-dependent e-Science Applications Eun-Sung Jung, Sanjay Ranka and Sartaj Sahni

    E-Print Network [OSTI]

    Sahni, Sartaj K.

    resources. For instance, the high-energy physics (HEP) data are expected to grow from the current petabytes distributed applications, and can be used to formulate the bandwidth allocation problem with through- put emerged to describe the "large-scale science carried out through distributed global collaborations enabled

  17. 1998 SPIE Smart Structures and Materials Conf. Paper #332919/332742 High bandwidth tunability in a smart vibration absorber

    E-Print Network [OSTI]

    Flatau, Alison B.

    in a smart vibration absorber Alison B. Flatau, + Marcelo J. Dapino ++ and Frederick T. Calkins Terfenol­D vibration absorber is developed in this paper. An overview of magnetostriction including to achieve high bandwidth tunability in the performance of a Terfenol­D vibration absorber. Keywords

  18. 12 IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 13, NO. 1, JANUARY 1995 Predictive Dynamic Bandwidth

    E-Print Network [OSTI]

    Ghosh, Joydeep

    transmission of real-time video traffic. I. INTRODUCTION TM technology offers a great flexibility of transmis, Member, IEEE, and Joydeep Ghosh Abstract- This paper presents a novel approach to dynamic transmission bandwidth allocation for transport of real-time variable-bit-rate video in ATM networks. Video traffic

  19. Abstract--Ever-increasing bandwidth demands and higher flexibility are the main challenges for the next generation optical

    E-Print Network [OSTI]

    Varvarigo, Emmanouel "Manos"

    to network cost, size, and power requirements. In opaque networks the signal is regenerated at every) and network related OpEx (power consumption, floor space, repair costs) considerations. To make it more1 Abstract--Ever-increasing bandwidth demands and higher flexibility are the main challenges

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

    E-Print Network [OSTI]

    Lazos, Loukas

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

  1. Approximate fair bandwidth allocation: A method for simple and flexible traffic Rong Pan, Balaji Prabhakar, Flavio Bonomi and Bob Olsen

    E-Print Network [OSTI]

    Prabhakar, Balaji

    by the industry. This paper describes the evolution of AFD from a research project into an industry setting from the academic world into the industry. I. INTRODUCTION Note: This paper describes the backgroundApproximate fair bandwidth allocation: A method for simple and flexible traffic management Rong Pan

  2. Hard-molded 51 cm long waveguide array with a 150 GHz bandwidth for board-level optical

    E-Print Network [OSTI]

    Jiang, Wei

    Hard-molded 51 cm long waveguide array with a 150 GHz bandwidth for board-level optical fabricated by silicon hard-molding technology. To reduce the silicon sidewall roughness, a wet-producible, and high-quality optical layers. We previously demonstrated a soft-molded waveguide layer with 45° coupling

  3. Quasi-Newton inversion of seismic first arrivals using source finite1 bandwidth assumption: application to landslides characterization2

    E-Print Network [OSTI]

    Boyer, Edmond

    , Samyn et al. (2011) used a 3D seismic refraction traveltime52 tomography to provide a valuable-00749309,version1-7Nov2012 #12;recommended for all case studies. Seismic refraction can be basicallyQuasi-Newton inversion of seismic first arrivals using source finite1 bandwidth assumption

  4. High bandwidth-efficiency solar-blind AlGaN Schottky photodiodes with low dark current

    E-Print Network [OSTI]

    High bandwidth-efficiency solar-blind AlGaN Schottky photodiodes with low dark current T. Tut a , N.38Ga0.62N/GaN heterojunction solar-blind Schottky photodetectors with low dark current, high responsivity, and fast pulse response were demonstrated. A five-step microwave compatible fabrication process

  5. A Pure STT-MRAM Design for High-bandwidth Low-power On-chip Interconnects 

    E-Print Network [OSTI]

    Kansal, Rohan

    2013-08-09

    Network-on-Chip (NoC) is a de facto inter-core communication infrastructure for future Chip Multiprocessors (CMPs). NoC should be designed to provide both low latency and high bandwidth considering limited on-chip power and area budgets. The use...

  6. Multi-gap high impedance plasma opening switch

    DOE Patents [OSTI]

    Mason, R.J.

    1996-10-22

    A high impedance plasma opening switch having an anode and a cathode and at least one additional electrode placed between the anode and cathode is disclosed. The presence of the additional electrodes leads to the creation of additional plasma gaps which are in series, increasing the net impedance of the switch. An equivalent effect can be obtained by using two or more conventional plasma switches with their plasma gaps wired in series. Higher impedance switches can provide high current and voltage to higher impedance loads such as plasma radiation sources. 12 figs.

  7. Multi-gap high impedance plasma opening switch

    DOE Patents [OSTI]

    Mason, Rodney J. (Los Alamos, NM)

    1996-01-01

    A high impedance plasma opening switch having an anode and a cathode and at least one additional electrode placed between the anode and cathode. The presence of the additional electrodes leads to the creation of additional plasma gaps which are in series, increasing the net impedance of the switch. An equivalent effect can be obtained by using two or more conventional plasma switches with their plasma gaps wired in series. Higher impedance switches can provide high current and voltage to higher impedance loads such as plasma radiation sources.

  8. The switching dynamics of the bacterial flagellar motor

    E-Print Network [OSTI]

    Siebe B. van Albada; Sorin Tanase-Nicola; Pieter Rein ten Wolde

    2008-11-14

    Many swimming bacteria are propelled by flagellar motors that stochastically switch between the clockwise and counterclockwise rotation direction. While the switching dynamics are one of the most important characteristics of flagellar motors, the mechanisms that control switching are poorly understood. We present a statistical-mechanical model of the flagellar rotary motor, which consists of a number of stator proteins that drive the rotation of a ring of rotor proteins, which in turn drives the rotation of a flagellar filament. At the heart of our model is the assumption that the rotor protein complex can exist in two conformational states corresponding to the two respective rotation directions, and that switching between these states depends on interactions with the stator proteins. This naturally couples the switching dynamics to the rotation dynamics, making the switch sensitive to torque and speed. Another key element of our model is that after a switching event, it takes time for the load to build up, due to polymorphic transitions of the filament. Our model predicts that this slow relaxation dynamics of the filament, in combination with the load dependence of the switching frequency, leads to a characteristic switching time, in agreement with recent observations.

  9. Robust Diamond-Based RF Switch Yields Enhanced Communication...

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

    diamond (UNCD) as a dielectric. A specialized radio frequency (RF) micro-electromechanical system (MEMS) switch that promises enhanced capabilities for next-generation...

  10. Modeling and simulation of switchings in ferroelectric liquid crystals.

    E-Print Network [OSTI]

    2009-12-09

    ical and numerical investigations are conducted to study effects of the energy associated with the polarization, switching patterns between two uniform states.

  11. Elastomeric organic material for switching application

    SciTech Connect (OSTI)

    Shiju, K., E-mail: shijuvenus@gmail.com, E-mail: pravymon@gmail.com, E-mail: ppredeep@gmail.com; Praveen, T., E-mail: shijuvenus@gmail.com, E-mail: pravymon@gmail.com, E-mail: ppredeep@gmail.com; Preedep, P., E-mail: shijuvenus@gmail.com, E-mail: pravymon@gmail.com, E-mail: ppredeep@gmail.com [Laboratory for Molecular Photonics and Electronics (LAMP), Department of Physics, National Institute of Technology, Calicut, Kerala, 673601 (India)

    2014-10-15

    Organic Electronic devices like OLED, Organic Solar Cells etc are promising as, cost effective alternatives to their inorganic counterparts due to various reasons. However the organic semiconductors currently available are not attractive with respect to their high cost and intricate synthesis protocols. Here we demonstrate that Natural Rubber has the potential to become a cost effective solution to this. Here an attempt has been made to fabricate iodine doped poly isoprene based switching device. In this work Poly methyl methacrylate is used as dielectric layer and Aluminium are employed as electrodes.

  12. Soft Switching Technologies | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc JumpHeter Battery TechnologySocovoltaic Systems Jump to:Soft Switching

  13. Organic solid state switches incorporating porphyrin compounds and method for producing organic solid state optical switches

    DOE Patents [OSTI]

    Wasielewski, M.R.; Gaines, G.L.; Niemczyk, M.P.; Johnson, D.G.; Gosztola, D.J.; O`Neil, M.P.

    1996-07-23

    A light-intensity dependent molecular switch comprised of a compound which shuttles an electron or a plurality of electrons from a plurality of electron donors to an electron acceptor upon being stimulated with light of predetermined wavelengths, said donors selected from porphyrins and other compounds, and a method for making said compound are disclosed. 4 figs.

  14. Organic solid state switches incorporating porphyrin compounds and method for producing organic solid state optical switches

    DOE Patents [OSTI]

    Wasielewski, Michael R. (Naperville, IL); Gaines, George L. (River Forest, IL); Niemczyk, Mark P. (Wheaton, IL); Johnson, Douglas G. (Grayslake, IL); Gosztola, David J. (Bolingbrook, IL); O'Neil, Michael P. (San Leandro, CA)

    1996-01-01

    A light-intensity dependent molecular switch comprised of a compound which shuttles an electron or a plurality of electrons from a plurality of electron donors to an electron acceptor upon being stimulated with light of predetermined wavelengths, said donors selected from porphyrins and other compounds, and a method for making said compound.

  15. Organic solid state optical switches and method for producing organic solid state optical switches

    DOE Patents [OSTI]

    Wasielewski, M.R.; Gaines, G.L.; Niemczyk, M.P.; Johnson, D.G.; Gosztola, D.J.; O`Neil, M.P.

    1993-01-01

    This invention consists of a light-intensity dependent molecular switch comprised of a compound which shuttles an electron or a plurality of electrons from a plurality of electron donors to an electron acceptor upon being stimulated with light of predetermined wavelengths, and a method for making said compound.

  16. Lethbridge Collegiate Programming Contest 2014 (Division I) October 18, A: A-Switches

    E-Print Network [OSTI]

    Cheng, Howard

    Lethbridge Collegiate Programming Contest 2014 (Division I) October 18, 2014 A: A-Switches s t 1 2 3 4 5 6 7 8 A-switch B-switch Figure 1: The case in the Sample Input. The colour of each switches is irrelevant; they are coloured so you can easily differentiate between each of the switches in the picture. I

  17. Asymptotic Performance Limits of Switches with Buffered Crossbars supporting Multicast Traffic

    E-Print Network [OSTI]

    Asymptotic Performance Limits of Switches with Buffered Crossbars supporting Multicast Traffic.leonardi@polito.it Abstract-- Input queued switches exploiting buffered crossbars (CICQ switches) are widely considered very promising architec- tures that outperform input queued (IQ) switches with bufferless switching fabrics both

  18. ATM Input-Buffered Switches with the Guaranteed-Rate Property

    E-Print Network [OSTI]

    McKeown, Nick

    ATM Input-Buffered Switches with the Guaranteed-Rate Property A. Hung G. Kesidis N. Mc the problem of how to support guaranteed-rate services in a single-stage, input-bu ered switch suitable for a LAN switch, an ATM switch or an IP router. Such a switch must be feasible at hightransmissionspeeds, o

  19. Student Code Number: Thermodynamics

    E-Print Network [OSTI]

    Feeny, Brian

    Student Code Number: Thermodynamics Ph.D. Qualifying Exam Department of Mechanical Engineering;Thermodynamics Qualifier January 2013 Problem 1 Air is compressed in an axial-flow compressor operating at steady of exergy destruction within the compressor, in kJ per kg of air flowing. #12;Thermodynamics Qualifier

  20. Introduction to Algebraic Codes

    E-Print Network [OSTI]

    Purdue University. W.Lafayette, Indiana ..... information. It motivated many scientists to study the codes transmitted by living beings, ...... We have the following diagram, where lines indicate inclusion relation,. ?. Fp4 Fp6 Fp10 ...... K over. the field K. There is a serious problem of being incomplete for the affine spaces: 69 ...

  1. Switching power converter Figure 1(a): Switching DC-DC converter with analog voltage-mode control

    E-Print Network [OSTI]

    + ­ RC L Vg 1 2 i + v _ Vref + _ Gc(s) VM = 1 PWM u c Switching power converter H v dTs H = 1 design of digital compensators. I. INTRODUCTION Discrete-time modeling of dc-dc switching converters has IEEE. #12;+ ­ R C L Vg 1 2 i + v _ Vref + _ Gc(z) VM = 1 DPWM u c Switching power converter H v dTs H

  2. Abstract--In optical packet switching, the reconfiguration time of optical switches should only be a small fraction of the packet

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Abstract--In optical packet switching, the reconfiguration time of optical switches should only. This constraint puts a very stringent demand on the switch reconfigu- ration time as the transmission rate of optical fiber increases. By using batch transfer of packets, we propose an optical switch ar- chitecture

  3. What's the Code? Automatic Classification of Source Code Archives

    E-Print Network [OSTI]

    Giles, C. Lee

    show that source code can be accurately and automatically classified into topical categories and canWhat's the Code? Automatic Classification of Source Code Archives Secil Ugurel1, Robert Krovetz2, C.psu.edu 2NECResearchInstitute 4 IndependenceWay, Princeton,NJ 08540 {krovetz, dpennock, compuman} @research

  4. Space time coded code division multiplexing on SC140 DSP 

    E-Print Network [OSTI]

    Menon, Murali P

    2001-01-01

    is implemented on StarCore's SC140 fixed-point DSP core. The very large instruction word architecture of the SC140 is utilized to efficiently implement space-time coded code-division multiplexing system. The goal is to evaluate the suitability of space-time coded...

  5. Generating Code for High-Level Operations through Code Composition

    E-Print Network [OSTI]

    Generating Code for High-Level Operations through Code Composition James M. Stichnoth August 1997 of the authors and should not be interpreted as necessarily representing the official policies or endorsements: Compilers, code generation, parallelism, communication generation #12;Abstract A traditional compiler

  6. Adaptive code generators for tree coding of speech 

    E-Print Network [OSTI]

    Dong, Hui

    1998-01-01

    Tree coding is a promising way of obtaining good performance for medium-to-low rate speech coding. The key part of a tree coder is the code generator which consists of a short-term predictor and a long-term predictor. The ...

  7. Optimal FEC Strategies in Connections with Large Delay-Bandwidth Products

    E-Print Network [OSTI]

    Libman, Lavy

    achieves a higher average throughput, but also incurs higher transmission costs (e.g. in terms of energy Orda Department of Electrical Engineering Technion ­ Israel Institute of Technology Haifa 32000, Israel of a wireless device) and creates a higher load on the network. We define an optimal coding strategy as one

  8. Design, fabrication and testing of a lateral self-cleaning MEMS switch

    E-Print Network [OSTI]

    Shi, Yong, 1965-

    2004-01-01

    A lateral contact MEMS switch has been developed to address the need for a long life cycle, low contact resistance RF switch. At the present time, there is no commercial MEMS switch that meets all the requirements. The ...

  9. Alternative pre-mRNA splicing switches modulate gene expression in late erythropoiesis

    E-Print Network [OSTI]

    Yamamoto, Miki L.

    2009-01-01

    Pre-mRNA Splicing Switches Modulate Gene Expression in Lateto discovery of many additional switches in promoter use andJ, et al. Differentiation-associated switches in protein 4.1

  10. Switch Hitting: How C.B.C. v. MLB Advanced Media Redefined the Right of Publicity

    E-Print Network [OSTI]

    Grossman, Gabriel

    2007-01-01

    Switch Hitting: How C.B. C. v. MLB Advanced Media RedefinedF. Supp. 2d at 1088 n.12. SWITCH HITTING ered to be good law2006). 4 Id. ' Id. at 1080. SWITCH HITTING ticipants may add

  11. A New Approach to Switch Fabrics based on Mini-Router Grids and Output Queueing

    E-Print Network [OSTI]

    Karadeniz, T.; Dabirmoghaddam, A.; Goren, Y.; Garcia-Luna-Aceves, J.J.

    2015-01-01

    The Tiny Tera: A Packet Switch Core. 1996. T. E. Anderson,C. P. Thacker, “High- speed switch scheduling for local-areaalgorithms for input-queued switches,” COMPUTER NETWORKS AND

  12. Method and apparatus for providing high bandwidth, low noise mechanical I/O for computer systems

    DOE Patents [OSTI]

    Rosenberg, Louis B. (Pleasanton, CA)

    1998-01-01

    A method and apparatus for providing high bandwidth and low noise mechanical input and output for computer systems. A gimbal mechanism provides two revolute degrees of freedom to an object about two axes of rotation. A linear axis member is coupled to the gimbal mechanism at the intersection of the two axes of rotation. The linear axis member is capable of being translated along a third axis to provide a third degree of freedom. The user object is coupled to the linear axis member and is thus translatable along the third axis so that the object can be moved along all three degrees of freedom. Transducers associated with the provided degrees of freedom include sensors and actuators and provide an electromechanical interface between the object and a digital processing system. Capstan drive mechanisms transmit forces between the transducers and the object. The linear axis member can also be rotated about its lengthwise axis to provide a fourth degree of freedom, and, optionally, a floating gimbal mechanism is coupled to the linear axis member to provide fifth and sixth degrees of freedom to an object. Transducer sensors are associated with the fourth, fifth, and sixth degrees of freedom. The interface is well suited for simulations of medical procedures and simulations in which an object such as a stylus or a joystick is moved and manipulated by the user.

  13. Low latency, high bandwidth data communications between compute nodes in a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J. (Rochester, MN); Blocksome, Michael A. (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian E. (Rochester, MN)

    2010-11-02

    Methods, parallel computers, and computer program products are disclosed for low latency, high bandwidth data communications between compute nodes in a parallel computer. Embodiments include receiving, by an origin direct memory access (`DMA`) engine of an origin compute node, data for transfer to a target compute node; sending, by the origin DMA engine of the origin compute node to a target DMA engine on the target compute node, a request to send (`RTS`) message; transferring, by the origin DMA engine, a predetermined portion of the data to the target compute node using memory FIFO operation; determining, by the origin DMA engine whether an acknowledgement of the RTS message has been received from the target DMA engine; if the an acknowledgement of the RTS message has not been received, transferring, by the origin DMA engine, another predetermined portion of the data to the target compute node using a memory FIFO operation; and if the acknowledgement of the RTS message has been received by the origin DMA engine, transferring, by the origin DMA engine, any remaining portion of the data to the target compute node using a direct put operation.

  14. Code Completion From Abbreviated Input

    E-Print Network [OSTI]

    Miller, Robert C.

    Abbreviation Completion is a novel technique to improve the efficiency of code-writing by supporting code completion of multiple keywords based on non-predefined abbreviated input - a different approach from conventional ...

  15. Network coding for anonymous broadcast

    E-Print Network [OSTI]

    Sergeev, Ivan A

    2013-01-01

    This thesis explores the use of network coding for anonymous broadcast. Network coding, the technique of transmitting or storing mixtures of messages rather than individual messages, can provide anonymity with its mixing ...

  16. Rotationally invariant multilevel block codes 

    E-Print Network [OSTI]

    Kulandaivelu, Anita

    1993-01-01

    The objective of this thesis is to evaluate the performance of block codes that are designed to be rotationally invariant, in a multilevel coding scheme, over a channel modelled to be white gaussian noise. Also, the use ...

  17. BERKELEY REVIEW OF LATIN AMERICAN STUDIES 6 Switching to Sustainability

    E-Print Network [OSTI]

    Kammen, Daniel M.

    as projectionsforfuturetechnologicaldevelopments,renewable energy potential, fuel costs, and public policy. Switch is designed to allowBERKELEY REVIEW OF LATIN AMERICAN STUDIES 6 Switching to Sustainability The Sustainable Energy Imperative Emerging economies will account for more than 90 percent of new energy-generation capacity by 2035

  18. Switching and defect dynamics in multistable liquid crystal devices

    E-Print Network [OSTI]

    A. Tiribocchi; G. Gonnella; D. Marenduzzo; E. Orlandini

    2011-02-07

    We investigate the switching dynamics of multistable nematic liquid crystal devices. In particular we identify a remarkably simple 2-dimensional (2D) device which exploits hybrid alignment at the surfaces to yield a bistable response. We also consider a 3-dimensional (3D) tristable nematic device with patterned anchoring, recently implemented in practice, and discuss how the director and disclination patterns change during switching.

  19. Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience

    E-Print Network [OSTI]

    Branicky, Michael S.

    Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience Michael S. Branicky Laboratory concentrated on formalizing the notion of a hybrid system as switching among an indexed collection of dynamical give a quick overview of the area of hybrid systems. I also briefly review the formal definition

  20. Predictive Control for Time-Delayed Switching Control Systems

    E-Print Network [OSTI]

    Barth, Eric J.

    Predictive Control for Time-Delayed Switching Control Systems Bobby L. Shields Eric J. Barth A methodology is proposed for the control of switching systems characterized by linear system dynamics period determines the effect that the next control input will have on the future output of the system

  1. Valuation of Energy Storage: An Optimal Switching Mike Ludkovski

    E-Print Network [OSTI]

    Ludkovski, Mike

    and hydroelectric pumped storage. Focusing on the timing flexibility aspect of the problem we construct an optimalValuation of Energy Storage: An Optimal Switching Approach Mike Ludkovski Department of Mathematics. Key words : gas storage; optimal switching; least squares Monte Carlo; hydro pumped storage; impulse

  2. Valuation of Energy Storage: An Optimal Switching Rene Carmona

    E-Print Network [OSTI]

    Carmona, Rene

    Valuation of Energy Storage: An Optimal Switching Approach Ren´e Carmona Department of Operations. Our two main examples are natural gas dome storage and hydroelectric pumped storage. Focusing on the timing flexibility aspect of the problem we construct an optimal switching model with inventory. Thus

  3. Optical Packet Switching Routers and Networks: Technologies, Architectures, and Applications

    E-Print Network [OSTI]

    Kolner, Brian H.

    Optical Packet Switching Routers and Networks: Technologies, Architectures, and Applications S. J 95616, U. S. A. yoo@ece.ucdavis.edu, Abstract: This paper covers new optical packet switching router technologies, system architectures, and the future photonic Internet. In particular, we will discuss all-optical

  4. Switching Cells and Their Implications for Power Electronic Circuits

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Switching Cells and Their Implications for Power Electronic Circuits Leon M. Tolbert1 , Fang Zheng with their implications and applications in power electronic circuits. The concept of switching cells in power electronic cells function as the fundamental elements in power electronic circuits, which cannot be further broken

  5. An Optical Interconnection Architecture for Large Packet Switches

    E-Print Network [OSTI]

    , Italy ABSTRACT The design of switching architectures for today's telecommunication networks needsICTON 2007 An Optical Interconnection Architecture for Large Packet Switches A. Bianco, E. Carta, D to consider the limits imposed by electronic technology; in particular, it must take into account power

  6. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, George R. (Norris, TN)

    1986-01-01

    A power supply for driving an inductive load current from a dc power supply hrough a regulator circuit including a bridge arrangement of diodes and switching transistors controlled by a servo controller which regulates switching in response to the load current to maintain a selected load current. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. The regulator may be operated in three "stages" or modes: (1) For current runup in the load, both first and second transistor switch arrays are turned "on" and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned "off", and load current "flywheels" through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays "off", allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load. The three operating states are controlled automatically by the controller.

  7. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, G.R.

    1983-11-29

    A dc switching regulated power supply for driving an inductive load is provided. The regulator basic circuit is a bridge arrangement of diodes and transistors. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. A dc power supply is connected to the input of the bridge and the output is connected to the load. A servo controller is provided to control the switching rate of the transistors to maintain a desired current to the load. The regulator may be operated in three stages or modes: (1) for current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned off, and load current flywheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays off, allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load.

  8. Tunnel MOS Heterostructure Field Effect Transistor for RF Switching Applications 

    E-Print Network [OSTI]

    Rezanezhad Gatabi, Iman

    2013-06-06

    GaN RF switches are widely used in today’s communication systems. With digital communications getting more and more popular nowadays, the need for improving the performance of involved RF switches is inevitable. Designing low ON-state resistance Ga...

  9. Improving Code Compliance

    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:FinancingPetroleum12,ExecutiveFinancingREnergy ToolsCoordinationDepartmentImproving Code

  10. Synchronization of two Rossler systems with switching coupling

    E-Print Network [OSTI]

    Mattia Frasca; Arturo Buscarino; Marco Branciforte; Luigi Fortuna; Julien Clinton Sprott

    2015-07-07

    In this paper, we study a system of two Rossler oscillators coupled through a time-varying link, periodically switching between two values. We analyze the system behavior with respect to the frequency of the switching. By applying an averaging technique under the hypothesis of a high switching frequency, we find that although each value of the coupling does not produce synchronization, switching between the two at a high frequency stabilizes the synchronization manifold. However, we also find windows of synchronization below the value predicted by this technique, and we develop a master stability function to explain the appearance of these windows. Spectral properties of the system are a useful tool for understanding the dynamical properties and the synchronization failure in some intervals of the switching frequency. Numerical and experimental results in agreement with the analysis are presented.

  11. MELCOR computer code manuals

    SciTech Connect (OSTI)

    Summers, R.M.; Cole, R.K. Jr.; Smith, R.C.; Stuart, D.S.; Thompson, S.L. [Sandia National Labs., Albuquerque, NM (United States); Hodge, S.A.; Hyman, C.R.; Sanders, R.L. [Oak Ridge National Lab., TN (United States)

    1995-03-01

    MELCOR is a fully integrated, engineering-level computer code that models the progression of severe accidents in light water reactor nuclear power plants. MELCOR is being developed at Sandia National Laboratories for the U.S. Nuclear Regulatory Commission as a second-generation plant risk assessment tool and the successor to the Source Term Code Package. A broad spectrum of severe accident phenomena in both boiling and pressurized water reactors is treated in MELCOR in a unified framework. These include: thermal-hydraulic response in the reactor coolant system, reactor cavity, containment, and confinement buildings; core heatup, degradation, and relocation; core-concrete attack; hydrogen production, transport, and combustion; fission product release and transport; and the impact of engineered safety features on thermal-hydraulic and radionuclide behavior. Current uses of MELCOR include estimation of severe accident source terms and their sensitivities and uncertainties in a variety of applications. This publication of the MELCOR computer code manuals corresponds to MELCOR 1.8.3, released to users in August, 1994. Volume 1 contains a primer that describes MELCOR`s phenomenological scope, organization (by package), and documentation. The remainder of Volume 1 contains the MELCOR Users Guides, which provide the input instructions and guidelines for each package. Volume 2 contains the MELCOR Reference Manuals, which describe the phenomenological models that have been implemented in each package.

  12. Design of proximity detecting codes 

    E-Print Network [OSTI]

    Perisetty, Srinivas

    1997-01-01

    class of codes called Proximity Detecting Codes can be used to overcome this problem associated with asynchronous channels. A t-proximity detecting (t-PD) code can detect when a received word is within distance t from the transmitted codeword, when using...

  13. A Mechanically Verified Code Generator

    E-Print Network [OSTI]

    Boyer, Robert Stephen

    A Mechanically Verified Code Generator William D. Young Technical Report 37 January, 1989, one which generates semantically equivalent target language code for any given source language program we describe the implementation and proof of a code generator, a major component of a compiler

  14. DOE Coordination Meeting CODES & STANDARDS

    E-Print Network [OSTI]

    industry and code officials, develop templates of commercially viable footprints for fueling stations-order continuing education for code officials. 3 Date (FY)DescriptionMilestone #12;Hydrogen Safety Neil RossmeisslDOE Coordination Meeting DELIVERY FUEL CELLS STORAGE PRODUCTION TECHNOLOGY VALIDATION CODES

  15. Southeast Energy Efficiency Alliance's Building Energy Codes...

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

    Southeast Energy Efficiency Alliance's Building Energy Codes Project Southeast Energy Efficiency Alliance's Building Energy Codes Project Building Codes Project for the 2013...

  16. A single-inductor switching DC-DC converter with five outputs and ordered power-distributive control

    E-Print Network [OSTI]

    Le, Hanh-Phuc; Chae, Chang-Seok; Lee, Kwang-Chan; Wang, Se-Won; Cho, Gyu-Ha; Cho, Gyu-Hyeong

    2007-01-01

    A. I. Pressman, Switching Power Supply Design. New York: Mc-switching tran- sients. In this design, since each powerdesigns for power electronics and telecommunications applications, with current emphasis on switch-mode power converters, hybrid switching

  17. Filamentary Switching: Synaptic Plasticity through Device Volatility

    E-Print Network [OSTI]

    La Barbera, Selina; Alibart, Fabien

    2015-01-01

    Replicating the computational functionalities and performances of the brain remains one of the biggest challenges for the future of information and communication technologies. Such an ambitious goal requires research efforts from the architecture level to the basic device level (i.e., investigating the opportunities offered by emerging nanotechnologies to build such systems). Nanodevices, or, more precisely, memory or memristive devices, have been proposed for the implementation of synaptic functions, offering the required features and integration in a single component. In this paper, we demonstrate that the basic physics involved in the filamentary switching of electrochemical metallization cells can reproduce important biological synaptic functions that are key mechanisms for information processing and storage. The transition from short- to long-term plasticity has been reported as a direct consequence of filament growth (i.e., increased conductance) in filamentary memory devices. In this paper, we show tha...

  18. Switched Control of Electron Nuclear Spin Systems

    E-Print Network [OSTI]

    Navin Khaneja

    2007-07-11

    In this article, we study control of electron-nuclear spin dynamics at magnetic field strengths where the Larmor frequency of the nucleus is comparable to the hyperfine coupling strength. The quantization axis for the nuclear spin differs from the static B_0 field direction and depends on the state of the electron spin. The quantization axis can be switched by flipping the state of electron spin, allowing for universal control on nuclear spin states. We show that by performing a sequence of flips (each followed by a suitable delay), we can perform any desired rotation on the nuclear spins, which can also be conditioned on the state of the electron spin. These operations, combined with electron spin rotations can be used to synthesize any unitary transformation on the coupled electron-nuclear spin system. We discuss how these methods can be used for design of experiments for transfer of polarization from the electron to the nuclear spins.

  19. Swing switching of spin-torque valves

    E-Print Network [OSTI]

    Tom Dunn; Alex Kamenev

    2012-10-10

    We propose a method for inducing magnetization reversal using an AC spin current polarized perpendicular to the equilibrium magnetization of the free magnetic layer. We show that the critical AC spin current is significantly smaller than the corresponding DC one. The effect is understood as a consequence of the underdamped nature of the spin-torque oscillators. It allows to use the kinetic inertia to overcome the residual energy barrier, rather than suppressing the latter by a large spin current. The effect is similar to a swing which may be set into high amplitude motion by a weak near-resonant push. The optimal AC frequency is identified as the upper bifurcation frequency of the corresponding driven nonlinear oscillator. Together with fast switching times it makes the perpendicular AC method to be the most efficient way to realize spin-torque memory valve.

  20. High voltage photo switch package module

    SciTech Connect (OSTI)

    Sullivan, James S; Sanders, David M; Hawkins, Steven A; Sampayan, Stephen E

    2014-02-18

    A photo-conductive switch package module having a photo-conductive substrate or wafer with opposing electrode-interface surfaces, and at least one light-input surface. First metallic layers are formed on the electrode-interface surfaces, and one or more optical waveguides having input and output ends are bonded to the substrate so that the output end of each waveguide is bonded to a corresponding one of the light-input surfaces of the photo-conductive substrate. This forms a waveguide-substrate interface for coupling light into the photo-conductive wafer. A dielectric material such as epoxy is then used to encapsulate the photo-conductive substrate and optical waveguide so that only the metallic layers and the input end of the optical waveguide are exposed. Second metallic layers are then formed on the first metallic layers so that the waveguide-substrate interface is positioned under the second metallic layers.

  1. Semiconductor switch geometry with electric field shaping

    DOE Patents [OSTI]

    Booth, R.; Pocha, M.D.

    1994-08-23

    An optoelectric switch is disclosed that utilizes a cylindrically shaped and contoured GaAs medium or other optically active semiconductor medium to couple two cylindrically shaped metal conductors with flat and flared termination points each having an ovoid prominence centrally extending there from. Coupling the truncated ovoid prominence of each conductor with the cylindrically shaped optically active semiconductor causes the semiconductor to cylindrically taper to a triple junction circular line at the base of each prominence where the metal conductor conjoins with the semiconductor and a third medium such as epoxy or air. Tapering the semiconductor at the triple junction inhibits carrier formation and injection at the triple junction and thereby enables greater current carrying capacity through and greater sensitivity of the bulk area of the optically active medium. 10 figs.

  2. Path planning during combustion mode switch

    DOE Patents [OSTI]

    Jiang, Li; Ravi, Nikhil

    2015-12-29

    Systems and methods are provided for transitioning between a first combustion mode and a second combustion mode in an internal combustion engine. A current operating point of the engine is identified and a target operating point for the internal combustion engine in the second combustion mode is also determined. A predefined optimized transition operating point is selected from memory. While operating in the first combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion engine to approach the selected optimized transition operating point. When the engine is operating at the selected optimized transition operating point, the combustion mode is switched from the first combustion mode to the second combustion mode. While operating in the second combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion to approach the target operating point.

  3. Semiconductor switch geometry with electric field shaping

    DOE Patents [OSTI]

    Booth, Rex (Livermore, CA); Pocha, Michael D. (Livermore, CA)

    1994-01-01

    An optoelectric switch is disclosed that utilizes a cylindrically shaped and contoured GaAs medium or other optically active semiconductor medium to couple two cylindrically shaped metal conductors with flat and flared termination points each having an ovoid prominence centrally extending there from. Coupling the truncated ovoid prominence of each conductor with the cylindrically shaped optically active semiconductor causes the semiconductor to cylindrically taper to a triple junction circular line at the base of each prominence where the metal conductor conjoins with the semiconductor and a third medium such as epoxy or air. Tapering the semiconductor at the triple junction inhibits carrier formation and injection at the triple junction and thereby enables greater current carrying capacity through and greater sensitivity of the bulk area of the optically active medium.

  4. Switched Mode Four-Quadrant Converters

    E-Print Network [OSTI]

    Thurel, Y

    2015-01-01

    This paper was originally presented at CAS-2004, and was slightly modified for CAS-2014. It presents a review of the key parameters that impact the design choices for a true four-quadrant power converter, in the range 1-10 kW, mainly based on switching mode converter topology. This paper will first describe the state-of-the-art for this power converter family, giving the drawbacks and advantages of different possible solutions. It will also present practical results obtained from the CERN-designed converter. It will finally give some important tips regarding critical phases like test one, when conducting a project dealing with this type of power converter.

  5. Eddy-current-damped microelectromechanical switch

    DOE Patents [OSTI]

    Christenson, Todd R. (Albuquerque, NM); Polosky, Marc A. (Tijeras, NM)

    2009-12-15

    A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to provide an eddy-current damping of the shuttle, thereby making the shuttle responsive to changes in acceleration or velocity of the MEM device. Alternately, the permanent magnets can be located in the substrate, and the metal portion can form the shuttle. An electrical switch closure in the MEM device can occur in response to a predetermined acceleration-time event. The MEM device, which can be fabricated either by micromachining or LIGA, can be used for sensing an acceleration or deceleration event (e.g. in automotive applications such as airbag deployment or seat belt retraction).

  6. Eddy-current-damped microelectromechanical switch

    DOE Patents [OSTI]

    Christenson, Todd R. (Albuquerque, NM); Polosky, Marc A. (Tijeras, NM)

    2007-10-30

    A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to provide an eddy-current damping of the shuttle, thereby making the shuttle responsive to changes in acceleration or velocity of the MEM device. Alternately, the permanent magnets can be located in the substrate, and the metal portion can form the shuttle. An electrical switch closure in the MEM device can occur in response to a predetermined acceleration-time event. The MEM device, which can be fabricated either by micromachining or LIGA, can be used for sensing an acceleration or deceleration event (e.g. in automotive applications such as airbag deployment or seat belt retraction).

  7. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2012-02-21

    A permanent-magnet switched-flux (PMSF) device has an outer rotor mounted to a shaft about a central axis extending axially through the PMSF device. First and second pluralities of permanent-magnets (PMs) are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the outer rotor. An inner stator is coupled to the shaft and has i) a stator core having a core axis co-axial with the central axis; and ii) first and second pluralities of stator poles mounted in first and second circles, radially outwardly from the stator core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  8. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2011-06-14

    A permanent-magnet switched-flux (PMSF) device has an outer rotor mounted to a shaft about a central axis extending axially through the PMSF device. First and second pluralities of permanent-magnets (PMs) are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the outer rotor. An inner stator is coupled to the shaft and has i) a stator core having a core axis co-axial with the central axis; and ii) first and second pluralities of stator poles mounted in first and second circles, radially outwardly from the stator core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  9. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2010-01-12

    A permanent-magnet switched-flux (PMSF) device has a ferromagnetic outer stator mounted to a shaft about a central axis extending axially through the PMSF device. Pluralities of top and bottom stator poles are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the ferromagnetic outer stator. A ferromagnetic inner rotor is coupled to the shaft and has i) a rotor core having a core axis co-axial with the central axis; and ii) first and second discs having respective outer edges with first and second pluralities of permanent magnets (PMs) mounted in first and second circles, radially outwardly from the rotor core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  10. Stress-tolerant and temperature-stable RF MEMS capacitive switches and tunable filters

    E-Print Network [OSTI]

    Reines, Isak C.

    2010-01-01

    Millimeter-wave microelectromechanical MEMS switches forMEMS switched capac- itors with stress-tolerance and temperature-stability ,” accepted for publication in IEEE Journal Microelectromechanical

  11. Switching of light with light using cold atoms inside a hollow optical fiber

    E-Print Network [OSTI]

    Bajcsy, Michal

    We demonstrate a fiber-optical switch that operates with a few hundred photons per switching pulse. The light-light interaction is mediated by laser-cooled

  12. Non-Markovian dynamics and steady-state entanglement of cavity arrays in finite-bandwidth squeezed reservoirs

    E-Print Network [OSTI]

    Stefano Zippilli; Fabrizio Illuminati

    2014-02-16

    When two chains of quantum systems are driven at their ends by a two-mode squeezed reservoir, they approach a steady state characterized by the formation of many entangled pairs. Each pair is made of one element of the first and one of the second chain. This effect has been already predicted under the assumption of broadband squeezing. Here we investigate the situation of finite-bandwidth reservoirs. This is done by modeling the driving bath as the output field of a non-degenerate parametric oscillator. The resulting non-Markovian dynamics is studied within the theoretical framework of cascade open quantum systems. It is shown that the formation of pair-entangled structures occurs as long as the normal-mode splitting of the arrays does not overcome the squeezing bandwidth of the reservoir.

  13. Final Report on DOE Project entitled Dynamic Optimized Advanced Scheduling of Bandwidth Demands for Large-Scale Science Applications

    SciTech Connect (OSTI)

    Ramamurthy, Byravamurthy

    2014-05-05

    In this project, developed scheduling frameworks for dynamic bandwidth demands for large-scale science applications. In particular, we developed scheduling algorithms for dynamic bandwidth demands in this project. Apart from theoretical approaches such as Integer Linear Programming, Tabu Search and Genetic Algorithm heuristics, we have utilized practical data from ESnet OSCARS project (from our DOE lab partners) to conduct realistic simulations of our approaches. We have disseminated our work through conference paper presentations and journal papers and a book chapter. In this project we addressed the problem of scheduling of lightpaths over optical wavelength division multiplexed (WDM) networks. We published several conference papers and journal papers on this topic. We also addressed the problems of joint allocation of computing, storage and networking resources in Grid/Cloud networks and proposed energy-efficient mechanisms for operatin optical WDM networks.

  14. Packaged X-band Phased-Arrays and High Data-Rate Switching Matrices in Advanced CMOS Processes

    E-Print Network [OSTI]

    Shin, Donghyup

    multiplexer-based switching matrices for low power design.based switching matrices for low power designs. Appendix A 2

  15. Wyner-Ziv coding based on TCQ and LDPC codes and extensions to multiterminal source coding 

    E-Print Network [OSTI]

    Yang, Yang

    2005-11-01

    performs only 0.2 dB away from the Wyner-Ziv limit D??W Z(R) at high rate, which mirrors the performance of entropy-coded TCQ in classic source coding. Practical designs perform 0.83 dB away from D??W Z(R) at medium rates. With 2-D trellis-coded vector...

  16. Coding Archives - Nercenergy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsCluster Compatibility Mode Cluster CompatibilityCoalCode of

  17. 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 ...

  18. Spintronic switches for ultra low energy global interconnects

    SciTech Connect (OSTI)

    Sharad, Mrigank Roy, Kaushik

    2014-05-07

    We present ultra-low energy interconnect design using nano-scale spin-torque (ST) switches for global data-links. Emerging spin-torque phenomena can lead to ultra-low-voltage, high-speed current-mode magnetic-switches. ST-switches can simultaneously provide large trans-impedance gain by employing magnetic tunnel junctions, to convert current-mode signals into large-swing voltage levels. Such device-characteristics can be used in the design of energy-efficient current-mode global interconnects.

  19. Photo-induced micro-mechanical optical switch

    DOE Patents [OSTI]

    Rajic, Slobodan (Knoxville, TN); Datskos, Panagiotis George (Knoxville, TN); Egert, Charles M. (late of Oak Ridge, TN)

    2002-01-01

    An optical switch is formed by introducing light lengthwise to a microcantilever waveguide directed toward a second waveguide. The microcantilever is caused to bend by light emitted from a laser diode orthogonal to the microcantilever and at an energy above the band gap, which induces stress as a result of the generation of free carriers. The bending of the waveguide directs the carrier frequency light to a second receptor waveguide or to a non-responsive surface. The switch may be combined in an array to perform multiple switching functions rapidly and at low energy losses.

  20. Blueswitch: Enabling Provably Consistent Configuration of Network Switches

    E-Print Network [OSTI]

    Han, Jong Hun; Mundkur, Prashanth; Rotsos, Charalampos; Antichi, Gianni; Dave, Nirav; Moore, Andrew W.; Neumann, Peter G.

    2015-05-28

    ordering in a command sequence. However, a barrier transaction per individual command is still insufficient in the case of modern switches. The design of modern commercial OpenFlow switches (e.g., Broadcom OFDPA [7]) in- 17978-1-4673-6633-5/15/$31.00 © 2015... -insertion flow-modification Figure 2: Number of packets misrouted during policy updates for Arista 7050S and Pica8 P3922. Both switches exhibit a significant number of packets misrouted (y-axis) during small policy reconfig- urations; the number...